diff options
Diffstat (limited to 'drivers/input')
56 files changed, 8101 insertions, 1509 deletions
diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c index 8afa28e4570e..a18f41b89b6a 100644 --- a/drivers/input/evdev.c +++ b/drivers/input/evdev.c @@ -28,6 +28,13 @@ #include <linux/cdev.h> #include "input-compat.h" +enum evdev_clock_type { + EV_CLK_REAL = 0, + EV_CLK_MONO, + EV_CLK_BOOT, + EV_CLK_MAX +}; + struct evdev { int open; struct input_handle handle; @@ -49,7 +56,7 @@ struct evdev_client { struct fasync_struct *fasync; struct evdev *evdev; struct list_head node; - int clkid; + int clk_type; bool revoked; unsigned int bufsize; struct input_event buffer[]; @@ -101,23 +108,22 @@ static void __evdev_flush_queue(struct evdev_client *client, unsigned int type) client->head = head; } -/* queue SYN_DROPPED event */ -static void evdev_queue_syn_dropped(struct evdev_client *client) +static void __evdev_queue_syn_dropped(struct evdev_client *client) { - unsigned long flags; struct input_event ev; ktime_t time; - time = (client->clkid == CLOCK_MONOTONIC) ? - ktime_get() : ktime_get_real(); + time = client->clk_type == EV_CLK_REAL ? + ktime_get_real() : + client->clk_type == EV_CLK_MONO ? + ktime_get() : + ktime_get_boottime(); ev.time = ktime_to_timeval(time); ev.type = EV_SYN; ev.code = SYN_DROPPED; ev.value = 0; - spin_lock_irqsave(&client->buffer_lock, flags); - client->buffer[client->head++] = ev; client->head &= client->bufsize - 1; @@ -126,8 +132,53 @@ static void evdev_queue_syn_dropped(struct evdev_client *client) client->tail = (client->head - 1) & (client->bufsize - 1); client->packet_head = client->tail; } +} + +static void evdev_queue_syn_dropped(struct evdev_client *client) +{ + unsigned long flags; + + spin_lock_irqsave(&client->buffer_lock, flags); + __evdev_queue_syn_dropped(client); + spin_unlock_irqrestore(&client->buffer_lock, flags); +} + +static int evdev_set_clk_type(struct evdev_client *client, unsigned int clkid) +{ + unsigned long flags; + + if (client->clk_type == clkid) + return 0; + + switch (clkid) { + + case CLOCK_REALTIME: + client->clk_type = EV_CLK_REAL; + break; + case CLOCK_MONOTONIC: + client->clk_type = EV_CLK_MONO; + break; + case CLOCK_BOOTTIME: + client->clk_type = EV_CLK_BOOT; + break; + default: + return -EINVAL; + } + + /* + * Flush pending events and queue SYN_DROPPED event, + * but only if the queue is not empty. + */ + spin_lock_irqsave(&client->buffer_lock, flags); + + if (client->head != client->tail) { + client->packet_head = client->head = client->tail; + __evdev_queue_syn_dropped(client); + } spin_unlock_irqrestore(&client->buffer_lock, flags); + + return 0; } static void __pass_event(struct evdev_client *client, @@ -159,7 +210,7 @@ static void __pass_event(struct evdev_client *client, static void evdev_pass_values(struct evdev_client *client, const struct input_value *vals, unsigned int count, - ktime_t mono, ktime_t real) + ktime_t *ev_time) { struct evdev *evdev = client->evdev; const struct input_value *v; @@ -169,8 +220,7 @@ static void evdev_pass_values(struct evdev_client *client, if (client->revoked) return; - event.time = ktime_to_timeval(client->clkid == CLOCK_MONOTONIC ? - mono : real); + event.time = ktime_to_timeval(ev_time[client->clk_type]); /* Interrupts are disabled, just acquire the lock. */ spin_lock(&client->buffer_lock); @@ -198,21 +248,22 @@ static void evdev_events(struct input_handle *handle, { struct evdev *evdev = handle->private; struct evdev_client *client; - ktime_t time_mono, time_real; + ktime_t ev_time[EV_CLK_MAX]; - time_mono = ktime_get(); - time_real = ktime_mono_to_real(time_mono); + ev_time[EV_CLK_MONO] = ktime_get(); + ev_time[EV_CLK_REAL] = ktime_mono_to_real(ev_time[EV_CLK_MONO]); + ev_time[EV_CLK_BOOT] = ktime_mono_to_any(ev_time[EV_CLK_MONO], + TK_OFFS_BOOT); rcu_read_lock(); client = rcu_dereference(evdev->grab); if (client) - evdev_pass_values(client, vals, count, time_mono, time_real); + evdev_pass_values(client, vals, count, ev_time); else list_for_each_entry_rcu(client, &evdev->client_list, node) - evdev_pass_values(client, vals, count, - time_mono, time_real); + evdev_pass_values(client, vals, count, ev_time); rcu_read_unlock(); } @@ -877,10 +928,8 @@ static long evdev_do_ioctl(struct file *file, unsigned int cmd, case EVIOCSCLOCKID: if (copy_from_user(&i, p, sizeof(unsigned int))) return -EFAULT; - if (i != CLOCK_MONOTONIC && i != CLOCK_REALTIME) - return -EINVAL; - client->clkid = i; - return 0; + + return evdev_set_clk_type(client, i); case EVIOCGKEYCODE: return evdev_handle_get_keycode(dev, p); diff --git a/drivers/input/input-mt.c b/drivers/input/input-mt.c index fbe29fcb15c5..cb150a1dbaff 100644 --- a/drivers/input/input-mt.c +++ b/drivers/input/input-mt.c @@ -293,7 +293,7 @@ void input_mt_sync_frame(struct input_dev *dev) } EXPORT_SYMBOL(input_mt_sync_frame); -static int adjust_dual(int *begin, int step, int *end, int eq) +static int adjust_dual(int *begin, int step, int *end, int eq, int mu) { int f, *p, s, c; @@ -311,9 +311,10 @@ static int adjust_dual(int *begin, int step, int *end, int eq) s = *p; c = (f + s + 1) / 2; - if (c == 0 || (c > 0 && !eq)) + if (c == 0 || (c > mu && (!eq || mu > 0))) return 0; - if (s < 0) + /* Improve convergence for positive matrices by penalizing overcovers */ + if (s < 0 && mu <= 0) c *= 2; for (p = begin; p != end; p += step) @@ -322,23 +323,24 @@ static int adjust_dual(int *begin, int step, int *end, int eq) return (c < s && s <= 0) || (f >= 0 && f < c); } -static void find_reduced_matrix(int *w, int nr, int nc, int nrc) +static void find_reduced_matrix(int *w, int nr, int nc, int nrc, int mu) { int i, k, sum; for (k = 0; k < nrc; k++) { for (i = 0; i < nr; i++) - adjust_dual(w + i, nr, w + i + nrc, nr <= nc); + adjust_dual(w + i, nr, w + i + nrc, nr <= nc, mu); sum = 0; for (i = 0; i < nrc; i += nr) - sum += adjust_dual(w + i, 1, w + i + nr, nc <= nr); + sum += adjust_dual(w + i, 1, w + i + nr, nc <= nr, mu); if (!sum) break; } } static int input_mt_set_matrix(struct input_mt *mt, - const struct input_mt_pos *pos, int num_pos) + const struct input_mt_pos *pos, int num_pos, + int mu) { const struct input_mt_pos *p; struct input_mt_slot *s; @@ -352,7 +354,7 @@ static int input_mt_set_matrix(struct input_mt *mt, y = input_mt_get_value(s, ABS_MT_POSITION_Y); for (p = pos; p != pos + num_pos; p++) { int dx = x - p->x, dy = y - p->y; - *w++ = dx * dx + dy * dy; + *w++ = dx * dx + dy * dy - mu; } } @@ -393,17 +395,24 @@ static void input_mt_set_slots(struct input_mt *mt, * @slots: the slot assignment to be filled * @pos: the position array to match * @num_pos: number of positions + * @dmax: maximum ABS_MT_POSITION displacement (zero for infinite) * * Performs a best match against the current contacts and returns * the slot assignment list. New contacts are assigned to unused * slots. * + * The assignments are balanced so that all coordinate displacements are + * below the euclidian distance dmax. If no such assignment can be found, + * some contacts are assigned to unused slots. + * * Returns zero on success, or negative error in case of failure. */ int input_mt_assign_slots(struct input_dev *dev, int *slots, - const struct input_mt_pos *pos, int num_pos) + const struct input_mt_pos *pos, int num_pos, + int dmax) { struct input_mt *mt = dev->mt; + int mu = 2 * dmax * dmax; int nrc; if (!mt || !mt->red) @@ -413,8 +422,8 @@ int input_mt_assign_slots(struct input_dev *dev, int *slots, if (num_pos < 1) return 0; - nrc = input_mt_set_matrix(mt, pos, num_pos); - find_reduced_matrix(mt->red, num_pos, nrc / num_pos, nrc); + nrc = input_mt_set_matrix(mt, pos, num_pos, mu); + find_reduced_matrix(mt->red, num_pos, nrc / num_pos, nrc, mu); input_mt_set_slots(mt, slots, num_pos); return 0; diff --git a/drivers/input/input.c b/drivers/input/input.c index 04217c2e345c..cc357f1516a7 100644 --- a/drivers/input/input.c +++ b/drivers/input/input.c @@ -100,23 +100,24 @@ static unsigned int input_to_handler(struct input_handle *handle, struct input_value *end = vals; struct input_value *v; - for (v = vals; v != vals + count; v++) { - if (handler->filter && - handler->filter(handle, v->type, v->code, v->value)) - continue; - if (end != v) - *end = *v; - end++; + if (handler->filter) { + for (v = vals; v != vals + count; v++) { + if (handler->filter(handle, v->type, v->code, v->value)) + continue; + if (end != v) + *end = *v; + end++; + } + count = end - vals; } - count = end - vals; if (!count) return 0; if (handler->events) handler->events(handle, vals, count); else if (handler->event) - for (v = vals; v != end; v++) + for (v = vals; v != vals + count; v++) handler->event(handle, v->type, v->code, v->value); return count; @@ -143,8 +144,11 @@ static void input_pass_values(struct input_dev *dev, count = input_to_handler(handle, vals, count); } else { list_for_each_entry_rcu(handle, &dev->h_list, d_node) - if (handle->open) + if (handle->open) { count = input_to_handler(handle, vals, count); + if (!count) + break; + } } rcu_read_unlock(); @@ -152,12 +156,14 @@ static void input_pass_values(struct input_dev *dev, add_input_randomness(vals->type, vals->code, vals->value); /* trigger auto repeat for key events */ - for (v = vals; v != vals + count; v++) { - if (v->type == EV_KEY && v->value != 2) { - if (v->value) - input_start_autorepeat(dev, v->code); - else - input_stop_autorepeat(dev); + if (test_bit(EV_REP, dev->evbit) && test_bit(EV_KEY, dev->evbit)) { + for (v = vals; v != vals + count; v++) { + if (v->type == EV_KEY && v->value != 2) { + if (v->value) + input_start_autorepeat(dev, v->code); + else + input_stop_autorepeat(dev); + } } } } @@ -1974,18 +1980,22 @@ static unsigned int input_estimate_events_per_packet(struct input_dev *dev) events = mt_slots + 1; /* count SYN_MT_REPORT and SYN_REPORT */ - for (i = 0; i < ABS_CNT; i++) { - if (test_bit(i, dev->absbit)) { - if (input_is_mt_axis(i)) - events += mt_slots; - else - events++; + if (test_bit(EV_ABS, dev->evbit)) { + for (i = 0; i < ABS_CNT; i++) { + if (test_bit(i, dev->absbit)) { + if (input_is_mt_axis(i)) + events += mt_slots; + else + events++; + } } } - for (i = 0; i < REL_CNT; i++) - if (test_bit(i, dev->relbit)) - events++; + if (test_bit(EV_REL, dev->evbit)) { + for (i = 0; i < REL_CNT; i++) + if (test_bit(i, dev->relbit)) + events++; + } /* Make room for KEY and MSC events */ events += 7; diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig index 96ee26c555e0..a89ba7cb96f1 100644 --- a/drivers/input/keyboard/Kconfig +++ b/drivers/input/keyboard/Kconfig @@ -559,6 +559,7 @@ config KEYBOARD_SH_KEYSC config KEYBOARD_STMPE tristate "STMPE keypad support" depends on MFD_STMPE + depends on OF select INPUT_MATRIXKMAP help Say Y here if you want to use the keypad controller on STMPE I/O @@ -567,6 +568,16 @@ config KEYBOARD_STMPE To compile this driver as a module, choose M here: the module will be called stmpe-keypad. +config KEYBOARD_SUN4I_LRADC + tristate "Allwinner sun4i low res adc attached tablet keys support" + depends on ARCH_SUNXI + help + This selects support for the Allwinner low res adc attached tablet + keys found on Allwinner sunxi SoCs. + + To compile this driver as a module, choose M here: the + module will be called sun4i-lradc-keys. + config KEYBOARD_DAVINCI tristate "TI DaVinci Key Scan" depends on ARCH_DAVINCI_DM365 diff --git a/drivers/input/keyboard/Makefile b/drivers/input/keyboard/Makefile index febafa527eb6..470767884bd8 100644 --- a/drivers/input/keyboard/Makefile +++ b/drivers/input/keyboard/Makefile @@ -53,6 +53,7 @@ obj-$(CONFIG_KEYBOARD_SPEAR) += spear-keyboard.o obj-$(CONFIG_KEYBOARD_STMPE) += stmpe-keypad.o obj-$(CONFIG_KEYBOARD_STOWAWAY) += stowaway.o obj-$(CONFIG_KEYBOARD_ST_KEYSCAN) += st-keyscan.o +obj-$(CONFIG_KEYBOARD_SUN4I_LRADC) += sun4i-lradc-keys.o obj-$(CONFIG_KEYBOARD_SUNKBD) += sunkbd.o obj-$(CONFIG_KEYBOARD_TC3589X) += tc3589x-keypad.o obj-$(CONFIG_KEYBOARD_TEGRA) += tegra-kbc.o diff --git a/drivers/input/keyboard/atakbd.c b/drivers/input/keyboard/atakbd.c index 10bcd4ae5402..f1235831283d 100644 --- a/drivers/input/keyboard/atakbd.c +++ b/drivers/input/keyboard/atakbd.c @@ -170,7 +170,7 @@ static unsigned char atakbd_keycode[0x72] = { /* American layout */ [93] = KEY_KPASTERISK, [94] = KEY_KPPLUS, [95] = KEY_HELP, - [96] = KEY_BACKSLASH, /* FIXME: '<' */ + [96] = KEY_102ND, [97] = KEY_KPASTERISK, /* FIXME */ [98] = KEY_KPSLASH, [99] = KEY_KPLEFTPAREN, diff --git a/drivers/input/keyboard/cap11xx.c b/drivers/input/keyboard/cap11xx.c index 4f59f0bab28f..f07461a64d85 100644 --- a/drivers/input/keyboard/cap11xx.c +++ b/drivers/input/keyboard/cap11xx.c @@ -370,7 +370,6 @@ static struct i2c_driver cap11xx_i2c_driver = { module_i2c_driver(cap11xx_i2c_driver); -MODULE_ALIAS("platform:cap11xx"); MODULE_DESCRIPTION("Microchip CAP11XX driver"); MODULE_AUTHOR("Daniel Mack <linux@zonque.org>"); MODULE_LICENSE("GPL v2"); diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c index d4dd78a7d56b..883d6aed5b9a 100644 --- a/drivers/input/keyboard/gpio_keys.c +++ b/drivers/input/keyboard/gpio_keys.c @@ -35,9 +35,13 @@ struct gpio_button_data { const struct gpio_keys_button *button; struct input_dev *input; - struct timer_list timer; - struct work_struct work; - unsigned int timer_debounce; /* in msecs */ + + struct timer_list release_timer; + unsigned int release_delay; /* in msecs, for IRQ-only buttons */ + + struct delayed_work work; + unsigned int software_debounce; /* in msecs, for GPIO-driven buttons */ + unsigned int irq; spinlock_t lock; bool disabled; @@ -116,11 +120,14 @@ static void gpio_keys_disable_button(struct gpio_button_data *bdata) { if (!bdata->disabled) { /* - * Disable IRQ and possible debouncing timer. + * Disable IRQ and associated timer/work structure. */ disable_irq(bdata->irq); - if (bdata->timer_debounce) - del_timer_sync(&bdata->timer); + + if (gpio_is_valid(bdata->button->gpio)) + cancel_delayed_work_sync(&bdata->work); + else + del_timer_sync(&bdata->release_timer); bdata->disabled = true; } @@ -343,7 +350,7 @@ static void gpio_keys_gpio_report_event(struct gpio_button_data *bdata) static void gpio_keys_gpio_work_func(struct work_struct *work) { struct gpio_button_data *bdata = - container_of(work, struct gpio_button_data, work); + container_of(work, struct gpio_button_data, work.work); gpio_keys_gpio_report_event(bdata); @@ -351,13 +358,6 @@ static void gpio_keys_gpio_work_func(struct work_struct *work) pm_relax(bdata->input->dev.parent); } -static void gpio_keys_gpio_timer(unsigned long _data) -{ - struct gpio_button_data *bdata = (struct gpio_button_data *)_data; - - schedule_work(&bdata->work); -} - static irqreturn_t gpio_keys_gpio_isr(int irq, void *dev_id) { struct gpio_button_data *bdata = dev_id; @@ -366,11 +366,10 @@ static irqreturn_t gpio_keys_gpio_isr(int irq, void *dev_id) if (bdata->button->wakeup) pm_stay_awake(bdata->input->dev.parent); - if (bdata->timer_debounce) - mod_timer(&bdata->timer, - jiffies + msecs_to_jiffies(bdata->timer_debounce)); - else - schedule_work(&bdata->work); + + mod_delayed_work(system_wq, + &bdata->work, + msecs_to_jiffies(bdata->software_debounce)); return IRQ_HANDLED; } @@ -408,7 +407,7 @@ static irqreturn_t gpio_keys_irq_isr(int irq, void *dev_id) input_event(input, EV_KEY, button->code, 1); input_sync(input); - if (!bdata->timer_debounce) { + if (!bdata->release_delay) { input_event(input, EV_KEY, button->code, 0); input_sync(input); goto out; @@ -417,9 +416,9 @@ static irqreturn_t gpio_keys_irq_isr(int irq, void *dev_id) bdata->key_pressed = true; } - if (bdata->timer_debounce) - mod_timer(&bdata->timer, - jiffies + msecs_to_jiffies(bdata->timer_debounce)); + if (bdata->release_delay) + mod_timer(&bdata->release_timer, + jiffies + msecs_to_jiffies(bdata->release_delay)); out: spin_unlock_irqrestore(&bdata->lock, flags); return IRQ_HANDLED; @@ -429,10 +428,10 @@ static void gpio_keys_quiesce_key(void *data) { struct gpio_button_data *bdata = data; - if (bdata->timer_debounce) - del_timer_sync(&bdata->timer); - - cancel_work_sync(&bdata->work); + if (gpio_is_valid(bdata->button->gpio)) + cancel_delayed_work_sync(&bdata->work); + else + del_timer_sync(&bdata->release_timer); } static int gpio_keys_setup_key(struct platform_device *pdev, @@ -466,23 +465,25 @@ static int gpio_keys_setup_key(struct platform_device *pdev, button->debounce_interval * 1000); /* use timer if gpiolib doesn't provide debounce */ if (error < 0) - bdata->timer_debounce = + bdata->software_debounce = button->debounce_interval; } - irq = gpio_to_irq(button->gpio); - if (irq < 0) { - error = irq; - dev_err(dev, - "Unable to get irq number for GPIO %d, error %d\n", - button->gpio, error); - return error; + if (button->irq) { + bdata->irq = button->irq; + } else { + irq = gpio_to_irq(button->gpio); + if (irq < 0) { + error = irq; + dev_err(dev, + "Unable to get irq number for GPIO %d, error %d\n", + button->gpio, error); + return error; + } + bdata->irq = irq; } - bdata->irq = irq; - INIT_WORK(&bdata->work, gpio_keys_gpio_work_func); - setup_timer(&bdata->timer, - gpio_keys_gpio_timer, (unsigned long)bdata); + INIT_DELAYED_WORK(&bdata->work, gpio_keys_gpio_work_func); isr = gpio_keys_gpio_isr; irqflags = IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING; @@ -499,8 +500,8 @@ static int gpio_keys_setup_key(struct platform_device *pdev, return -EINVAL; } - bdata->timer_debounce = button->debounce_interval; - setup_timer(&bdata->timer, + bdata->release_delay = button->debounce_interval; + setup_timer(&bdata->release_timer, gpio_keys_irq_timer, (unsigned long)bdata); isr = gpio_keys_irq_isr; @@ -510,7 +511,7 @@ static int gpio_keys_setup_key(struct platform_device *pdev, input_set_capability(input, button->type ?: EV_KEY, button->code); /* - * Install custom action to cancel debounce timer and + * Install custom action to cancel release timer and * workqueue item. */ error = devm_add_action(&pdev->dev, gpio_keys_quiesce_key, bdata); @@ -618,33 +619,30 @@ gpio_keys_get_devtree_pdata(struct device *dev) i = 0; for_each_child_of_node(node, pp) { - int gpio = -1; enum of_gpio_flags flags; button = &pdata->buttons[i++]; - if (!of_find_property(pp, "gpios", NULL)) { - button->irq = irq_of_parse_and_map(pp, 0); - if (button->irq == 0) { - i--; - pdata->nbuttons--; - dev_warn(dev, "Found button without gpios or irqs\n"); - continue; - } - } else { - gpio = of_get_gpio_flags(pp, 0, &flags); - if (gpio < 0) { - error = gpio; + button->gpio = of_get_gpio_flags(pp, 0, &flags); + if (button->gpio < 0) { + error = button->gpio; + if (error != -ENOENT) { if (error != -EPROBE_DEFER) dev_err(dev, "Failed to get gpio flags, error: %d\n", error); return ERR_PTR(error); } + } else { + button->active_low = flags & OF_GPIO_ACTIVE_LOW; } - button->gpio = gpio; - button->active_low = flags & OF_GPIO_ACTIVE_LOW; + button->irq = irq_of_parse_and_map(pp, 0); + + if (!gpio_is_valid(button->gpio) && !button->irq) { + dev_err(dev, "Found button without gpios or irqs\n"); + return ERR_PTR(-EINVAL); + } if (of_property_read_u32(pp, "linux,code", &button->code)) { dev_err(dev, "Button without keycode: 0x%x\n", @@ -659,6 +657,8 @@ gpio_keys_get_devtree_pdata(struct device *dev) button->wakeup = !!of_get_property(pp, "gpio-key,wakeup", NULL); + button->can_disable = !!of_get_property(pp, "linux,can-disable", NULL); + if (of_property_read_u32(pp, "debounce-interval", &button->debounce_interval)) button->debounce_interval = 5; diff --git a/drivers/input/keyboard/hil_kbd.c b/drivers/input/keyboard/hil_kbd.c index 610a8af795a1..5b152f25a8e1 100644 --- a/drivers/input/keyboard/hil_kbd.c +++ b/drivers/input/keyboard/hil_kbd.c @@ -473,7 +473,7 @@ static int hil_dev_connect(struct serio *serio, struct serio_driver *drv) if (error) goto bail1; - init_completion(&dev->cmd_done); + reinit_completion(&dev->cmd_done); serio_write(serio, 0); serio_write(serio, 0); serio_write(serio, HIL_PKT_CMD >> 8); @@ -482,7 +482,7 @@ static int hil_dev_connect(struct serio *serio, struct serio_driver *drv) if (error) goto bail1; - init_completion(&dev->cmd_done); + reinit_completion(&dev->cmd_done); serio_write(serio, 0); serio_write(serio, 0); serio_write(serio, HIL_PKT_CMD >> 8); @@ -491,7 +491,7 @@ static int hil_dev_connect(struct serio *serio, struct serio_driver *drv) if (error) goto bail1; - init_completion(&dev->cmd_done); + reinit_completion(&dev->cmd_done); serio_write(serio, 0); serio_write(serio, 0); serio_write(serio, HIL_PKT_CMD >> 8); diff --git a/drivers/input/keyboard/imx_keypad.c b/drivers/input/keyboard/imx_keypad.c index e53f232eda0e..2e855e6f3565 100644 --- a/drivers/input/keyboard/imx_keypad.c +++ b/drivers/input/keyboard/imx_keypad.c @@ -448,8 +448,7 @@ static int imx_keypad_probe(struct platform_device *pdev) return -ENOMEM; } - keypad = devm_kzalloc(&pdev->dev, sizeof(struct imx_keypad), - GFP_KERNEL); + keypad = devm_kzalloc(&pdev->dev, sizeof(*keypad), GFP_KERNEL); if (!keypad) { dev_err(&pdev->dev, "not enough memory for driver data\n"); return -ENOMEM; diff --git a/drivers/input/keyboard/pxa27x_keypad.c b/drivers/input/keyboard/pxa27x_keypad.c index a90d6bdc499e..a89488aa1aa4 100644 --- a/drivers/input/keyboard/pxa27x_keypad.c +++ b/drivers/input/keyboard/pxa27x_keypad.c @@ -20,6 +20,7 @@ #include <linux/module.h> #include <linux/interrupt.h> #include <linux/input.h> +#include <linux/io.h> #include <linux/device.h> #include <linux/platform_device.h> #include <linux/clk.h> @@ -28,10 +29,6 @@ #include <linux/slab.h> #include <linux/of.h> -#include <asm/mach/arch.h> -#include <asm/mach/map.h> - -#include <mach/hardware.h> #include <linux/platform_data/keypad-pxa27x.h> /* * Keypad Controller registers diff --git a/drivers/input/keyboard/stmpe-keypad.c b/drivers/input/keyboard/stmpe-keypad.c index ef5e67fb567e..fe6e3f22eed7 100644 --- a/drivers/input/keyboard/stmpe-keypad.c +++ b/drivers/input/keyboard/stmpe-keypad.c @@ -45,13 +45,14 @@ #define STMPE_KEYPAD_MAX_ROWS 8 #define STMPE_KEYPAD_MAX_COLS 8 #define STMPE_KEYPAD_ROW_SHIFT 3 -#define STMPE_KEYPAD_KEYMAP_SIZE \ +#define STMPE_KEYPAD_KEYMAP_MAX_SIZE \ (STMPE_KEYPAD_MAX_ROWS * STMPE_KEYPAD_MAX_COLS) /** * struct stmpe_keypad_variant - model-specific attributes * @auto_increment: whether the KPC_DATA_BYTE register address * auto-increments on multiple read + * @set_pullup: whether the pins need to have their pull-ups set * @num_data: number of data bytes * @num_normal_data: number of normal keys' data bytes * @max_cols: maximum number of columns supported @@ -61,6 +62,7 @@ */ struct stmpe_keypad_variant { bool auto_increment; + bool set_pullup; int num_data; int num_normal_data; int max_cols; @@ -81,6 +83,7 @@ static const struct stmpe_keypad_variant stmpe_keypad_variants[] = { }, [STMPE2401] = { .auto_increment = false, + .set_pullup = true, .num_data = 3, .num_normal_data = 2, .max_cols = 8, @@ -90,6 +93,7 @@ static const struct stmpe_keypad_variant stmpe_keypad_variants[] = { }, [STMPE2403] = { .auto_increment = true, + .set_pullup = true, .num_data = 5, .num_normal_data = 3, .max_cols = 8, @@ -99,16 +103,30 @@ static const struct stmpe_keypad_variant stmpe_keypad_variants[] = { }, }; +/** + * struct stmpe_keypad - STMPE keypad state container + * @stmpe: pointer to parent STMPE device + * @input: spawned input device + * @variant: STMPE variant + * @debounce_ms: debounce interval, in ms. Maximum is + * %STMPE_KEYPAD_MAX_DEBOUNCE. + * @scan_count: number of key scanning cycles to confirm key data. + * Maximum is %STMPE_KEYPAD_MAX_SCAN_COUNT. + * @no_autorepeat: disable key autorepeat + * @rows: bitmask for the rows + * @cols: bitmask for the columns + * @keymap: the keymap + */ struct stmpe_keypad { struct stmpe *stmpe; struct input_dev *input; const struct stmpe_keypad_variant *variant; - const struct stmpe_keypad_platform_data *plat; - + unsigned int debounce_ms; + unsigned int scan_count; + bool no_autorepeat; unsigned int rows; unsigned int cols; - - unsigned short keymap[STMPE_KEYPAD_KEYMAP_SIZE]; + unsigned short keymap[STMPE_KEYPAD_KEYMAP_MAX_SIZE]; }; static int stmpe_keypad_read_data(struct stmpe_keypad *keypad, u8 *data) @@ -171,7 +189,10 @@ static int stmpe_keypad_altfunc_init(struct stmpe_keypad *keypad) unsigned int col_gpios = variant->col_gpios; unsigned int row_gpios = variant->row_gpios; struct stmpe *stmpe = keypad->stmpe; + u8 pureg = stmpe->regs[STMPE_IDX_GPPUR_LSB]; unsigned int pins = 0; + unsigned int pu_pins = 0; + int ret; int i; /* @@ -188,8 +209,10 @@ static int stmpe_keypad_altfunc_init(struct stmpe_keypad *keypad) for (i = 0; i < variant->max_cols; i++) { int num = __ffs(col_gpios); - if (keypad->cols & (1 << i)) + if (keypad->cols & (1 << i)) { pins |= 1 << num; + pu_pins |= 1 << num; + } col_gpios &= ~(1 << num); } @@ -203,20 +226,43 @@ static int stmpe_keypad_altfunc_init(struct stmpe_keypad *keypad) row_gpios &= ~(1 << num); } - return stmpe_set_altfunc(stmpe, pins, STMPE_BLOCK_KEYPAD); + ret = stmpe_set_altfunc(stmpe, pins, STMPE_BLOCK_KEYPAD); + if (ret) + return ret; + + /* + * On STMPE24xx, set pin bias to pull-up on all keypad input + * pins (columns), this incidentally happen to be maximum 8 pins + * and placed at GPIO0-7 so only the LSB of the pull up register + * ever needs to be written. + */ + if (variant->set_pullup) { + u8 val; + + ret = stmpe_reg_read(stmpe, pureg); + if (ret) + return ret; + + /* Do not touch unused pins, may be used for GPIO */ + val = ret & ~pu_pins; + val |= pu_pins; + + ret = stmpe_reg_write(stmpe, pureg, val); + } + + return 0; } static int stmpe_keypad_chip_init(struct stmpe_keypad *keypad) { - const struct stmpe_keypad_platform_data *plat = keypad->plat; const struct stmpe_keypad_variant *variant = keypad->variant; struct stmpe *stmpe = keypad->stmpe; int ret; - if (plat->debounce_ms > STMPE_KEYPAD_MAX_DEBOUNCE) + if (keypad->debounce_ms > STMPE_KEYPAD_MAX_DEBOUNCE) return -EINVAL; - if (plat->scan_count > STMPE_KEYPAD_MAX_SCAN_COUNT) + if (keypad->scan_count > STMPE_KEYPAD_MAX_SCAN_COUNT) return -EINVAL; ret = stmpe_enable(stmpe, STMPE_BLOCK_KEYPAD); @@ -245,7 +291,7 @@ static int stmpe_keypad_chip_init(struct stmpe_keypad *keypad) ret = stmpe_set_bits(stmpe, STMPE_KPC_CTRL_MSB, STMPE_KPC_CTRL_MSB_SCAN_COUNT, - plat->scan_count << 4); + keypad->scan_count << 4); if (ret < 0) return ret; @@ -253,17 +299,18 @@ static int stmpe_keypad_chip_init(struct stmpe_keypad *keypad) STMPE_KPC_CTRL_LSB_SCAN | STMPE_KPC_CTRL_LSB_DEBOUNCE, STMPE_KPC_CTRL_LSB_SCAN | - (plat->debounce_ms << 1)); + (keypad->debounce_ms << 1)); } -static void stmpe_keypad_fill_used_pins(struct stmpe_keypad *keypad) +static void stmpe_keypad_fill_used_pins(struct stmpe_keypad *keypad, + u32 used_rows, u32 used_cols) { int row, col; - for (row = 0; row < STMPE_KEYPAD_MAX_ROWS; row++) { - for (col = 0; col < STMPE_KEYPAD_MAX_COLS; col++) { + for (row = 0; row < used_rows; row++) { + for (col = 0; col < used_cols; col++) { int code = MATRIX_SCAN_CODE(row, col, - STMPE_KEYPAD_ROW_SHIFT); + STMPE_KEYPAD_ROW_SHIFT); if (keypad->keymap[code] != KEY_RESERVED) { keypad->rows |= 1 << row; keypad->cols |= 1 << col; @@ -272,51 +319,17 @@ static void stmpe_keypad_fill_used_pins(struct stmpe_keypad *keypad) } } -#ifdef CONFIG_OF -static const struct stmpe_keypad_platform_data * -stmpe_keypad_of_probe(struct device *dev) -{ - struct device_node *np = dev->of_node; - struct stmpe_keypad_platform_data *plat; - - if (!np) - return ERR_PTR(-ENODEV); - - plat = devm_kzalloc(dev, sizeof(*plat), GFP_KERNEL); - if (!plat) - return ERR_PTR(-ENOMEM); - - of_property_read_u32(np, "debounce-interval", &plat->debounce_ms); - of_property_read_u32(np, "st,scan-count", &plat->scan_count); - - plat->no_autorepeat = of_property_read_bool(np, "st,no-autorepeat"); - - return plat; -} -#else -static inline const struct stmpe_keypad_platform_data * -stmpe_keypad_of_probe(struct device *dev) -{ - return ERR_PTR(-EINVAL); -} -#endif - static int stmpe_keypad_probe(struct platform_device *pdev) { struct stmpe *stmpe = dev_get_drvdata(pdev->dev.parent); - const struct stmpe_keypad_platform_data *plat; + struct device_node *np = pdev->dev.of_node; struct stmpe_keypad *keypad; struct input_dev *input; + u32 rows; + u32 cols; int error; int irq; - plat = stmpe->pdata->keypad; - if (!plat) { - plat = stmpe_keypad_of_probe(&pdev->dev); - if (IS_ERR(plat)) - return PTR_ERR(plat); - } - irq = platform_get_irq(pdev, 0); if (irq < 0) return irq; @@ -326,6 +339,13 @@ static int stmpe_keypad_probe(struct platform_device *pdev) if (!keypad) return -ENOMEM; + keypad->stmpe = stmpe; + keypad->variant = &stmpe_keypad_variants[stmpe->partnum]; + + of_property_read_u32(np, "debounce-interval", &keypad->debounce_ms); + of_property_read_u32(np, "st,scan-count", &keypad->scan_count); + keypad->no_autorepeat = of_property_read_bool(np, "st,no-autorepeat"); + input = devm_input_allocate_device(&pdev->dev); if (!input) return -ENOMEM; @@ -334,23 +354,22 @@ static int stmpe_keypad_probe(struct platform_device *pdev) input->id.bustype = BUS_I2C; input->dev.parent = &pdev->dev; - error = matrix_keypad_build_keymap(plat->keymap_data, NULL, - STMPE_KEYPAD_MAX_ROWS, - STMPE_KEYPAD_MAX_COLS, + error = matrix_keypad_parse_of_params(&pdev->dev, &rows, &cols); + if (error) + return error; + + error = matrix_keypad_build_keymap(NULL, NULL, rows, cols, keypad->keymap, input); if (error) return error; input_set_capability(input, EV_MSC, MSC_SCAN); - if (!plat->no_autorepeat) + if (!keypad->no_autorepeat) __set_bit(EV_REP, input->evbit); - stmpe_keypad_fill_used_pins(keypad); + stmpe_keypad_fill_used_pins(keypad, rows, cols); - keypad->stmpe = stmpe; - keypad->plat = plat; keypad->input = input; - keypad->variant = &stmpe_keypad_variants[stmpe->partnum]; error = stmpe_keypad_chip_init(keypad); if (error < 0) diff --git a/drivers/input/keyboard/sun4i-lradc-keys.c b/drivers/input/keyboard/sun4i-lradc-keys.c new file mode 100644 index 000000000000..cc8f7ddcee53 --- /dev/null +++ b/drivers/input/keyboard/sun4i-lradc-keys.c @@ -0,0 +1,286 @@ +/* + * Allwinner sun4i low res adc attached tablet keys driver + * + * Copyright (C) 2014 Hans de Goede <hdegoede@redhat.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +/* + * Allwinnner sunxi SoCs have a lradc which is specifically designed to have + * various (tablet) keys (ie home, back, search, etc). attached to it using + * a resistor network. This driver is for the keys on such boards. + * + * There are 2 channels, currently this driver only supports channel 0 since + * there are no boards known to use channel 1. + */ + +#include <linux/err.h> +#include <linux/init.h> +#include <linux/input.h> +#include <linux/interrupt.h> +#include <linux/io.h> +#include <linux/module.h> +#include <linux/of_platform.h> +#include <linux/platform_device.h> +#include <linux/regulator/consumer.h> +#include <linux/slab.h> + +#define LRADC_CTRL 0x00 +#define LRADC_INTC 0x04 +#define LRADC_INTS 0x08 +#define LRADC_DATA0 0x0c +#define LRADC_DATA1 0x10 + +/* LRADC_CTRL bits */ +#define FIRST_CONVERT_DLY(x) ((x) << 24) /* 8 bits */ +#define CHAN_SELECT(x) ((x) << 22) /* 2 bits */ +#define CONTINUE_TIME_SEL(x) ((x) << 16) /* 4 bits */ +#define KEY_MODE_SEL(x) ((x) << 12) /* 2 bits */ +#define LEVELA_B_CNT(x) ((x) << 8) /* 4 bits */ +#define HOLD_EN(x) ((x) << 6) +#define LEVELB_VOL(x) ((x) << 4) /* 2 bits */ +#define SAMPLE_RATE(x) ((x) << 2) /* 2 bits */ +#define ENABLE(x) ((x) << 0) + +/* LRADC_INTC and LRADC_INTS bits */ +#define CHAN1_KEYUP_IRQ BIT(12) +#define CHAN1_ALRDY_HOLD_IRQ BIT(11) +#define CHAN1_HOLD_IRQ BIT(10) +#define CHAN1_KEYDOWN_IRQ BIT(9) +#define CHAN1_DATA_IRQ BIT(8) +#define CHAN0_KEYUP_IRQ BIT(4) +#define CHAN0_ALRDY_HOLD_IRQ BIT(3) +#define CHAN0_HOLD_IRQ BIT(2) +#define CHAN0_KEYDOWN_IRQ BIT(1) +#define CHAN0_DATA_IRQ BIT(0) + +struct sun4i_lradc_keymap { + u32 voltage; + u32 keycode; +}; + +struct sun4i_lradc_data { + struct device *dev; + struct input_dev *input; + void __iomem *base; + struct regulator *vref_supply; + struct sun4i_lradc_keymap *chan0_map; + u32 chan0_map_count; + u32 chan0_keycode; + u32 vref; +}; + +static irqreturn_t sun4i_lradc_irq(int irq, void *dev_id) +{ + struct sun4i_lradc_data *lradc = dev_id; + u32 i, ints, val, voltage, diff, keycode = 0, closest = 0xffffffff; + + ints = readl(lradc->base + LRADC_INTS); + + /* + * lradc supports only one keypress at a time, release does not give + * any info as to which key was released, so we cache the keycode. + */ + + if (ints & CHAN0_KEYUP_IRQ) { + input_report_key(lradc->input, lradc->chan0_keycode, 0); + lradc->chan0_keycode = 0; + } + + if ((ints & CHAN0_KEYDOWN_IRQ) && lradc->chan0_keycode == 0) { + val = readl(lradc->base + LRADC_DATA0) & 0x3f; + voltage = val * lradc->vref / 63; + + for (i = 0; i < lradc->chan0_map_count; i++) { + diff = abs(lradc->chan0_map[i].voltage - voltage); + if (diff < closest) { + closest = diff; + keycode = lradc->chan0_map[i].keycode; + } + } + + lradc->chan0_keycode = keycode; + input_report_key(lradc->input, lradc->chan0_keycode, 1); + } + + input_sync(lradc->input); + + writel(ints, lradc->base + LRADC_INTS); + + return IRQ_HANDLED; +} + +static int sun4i_lradc_open(struct input_dev *dev) +{ + struct sun4i_lradc_data *lradc = input_get_drvdata(dev); + int error; + + error = regulator_enable(lradc->vref_supply); + if (error) + return error; + + /* lradc Vref internally is divided by 2/3 */ + lradc->vref = regulator_get_voltage(lradc->vref_supply) * 2 / 3; + + /* + * Set sample time to 4 ms / 250 Hz. Wait 2 * 4 ms for key to + * stabilize on press, wait (1 + 1) * 4 ms for key release + */ + writel(FIRST_CONVERT_DLY(2) | LEVELA_B_CNT(1) | HOLD_EN(1) | + SAMPLE_RATE(0) | ENABLE(1), lradc->base + LRADC_CTRL); + + writel(CHAN0_KEYUP_IRQ | CHAN0_KEYDOWN_IRQ, lradc->base + LRADC_INTC); + + return 0; +} + +static void sun4i_lradc_close(struct input_dev *dev) +{ + struct sun4i_lradc_data *lradc = input_get_drvdata(dev); + + /* Disable lradc, leave other settings unchanged */ + writel(FIRST_CONVERT_DLY(2) | LEVELA_B_CNT(1) | HOLD_EN(1) | + SAMPLE_RATE(2), lradc->base + LRADC_CTRL); + writel(0, lradc->base + LRADC_INTC); + + regulator_disable(lradc->vref_supply); +} + +static int sun4i_lradc_load_dt_keymap(struct device *dev, + struct sun4i_lradc_data *lradc) +{ + struct device_node *np, *pp; + int i; + int error; + + np = dev->of_node; + if (!np) + return -EINVAL; + + lradc->chan0_map_count = of_get_child_count(np); + if (lradc->chan0_map_count == 0) { + dev_err(dev, "keymap is missing in device tree\n"); + return -EINVAL; + } + + lradc->chan0_map = devm_kmalloc_array(dev, lradc->chan0_map_count, + sizeof(struct sun4i_lradc_keymap), + GFP_KERNEL); + if (!lradc->chan0_map) + return -ENOMEM; + + i = 0; + for_each_child_of_node(np, pp) { + struct sun4i_lradc_keymap *map = &lradc->chan0_map[i]; + u32 channel; + + error = of_property_read_u32(pp, "channel", &channel); + if (error || channel != 0) { + dev_err(dev, "%s: Inval channel prop\n", pp->name); + return -EINVAL; + } + + error = of_property_read_u32(pp, "voltage", &map->voltage); + if (error) { + dev_err(dev, "%s: Inval voltage prop\n", pp->name); + return -EINVAL; + } + + error = of_property_read_u32(pp, "linux,code", &map->keycode); + if (error) { + dev_err(dev, "%s: Inval linux,code prop\n", pp->name); + return -EINVAL; + } + + i++; + } + + return 0; +} + +static int sun4i_lradc_probe(struct platform_device *pdev) +{ + struct sun4i_lradc_data *lradc; + struct device *dev = &pdev->dev; + int i; + int error; + + lradc = devm_kzalloc(dev, sizeof(struct sun4i_lradc_data), GFP_KERNEL); + if (!lradc) + return -ENOMEM; + + error = sun4i_lradc_load_dt_keymap(dev, lradc); + if (error) + return error; + + lradc->vref_supply = devm_regulator_get(dev, "vref"); + if (IS_ERR(lradc->vref_supply)) + return PTR_ERR(lradc->vref_supply); + + lradc->dev = dev; + lradc->input = devm_input_allocate_device(dev); + if (!lradc->input) + return -ENOMEM; + + lradc->input->name = pdev->name; + lradc->input->phys = "sun4i_lradc/input0"; + lradc->input->open = sun4i_lradc_open; + lradc->input->close = sun4i_lradc_close; + lradc->input->id.bustype = BUS_HOST; + lradc->input->id.vendor = 0x0001; + lradc->input->id.product = 0x0001; + lradc->input->id.version = 0x0100; + + __set_bit(EV_KEY, lradc->input->evbit); + for (i = 0; i < lradc->chan0_map_count; i++) + __set_bit(lradc->chan0_map[i].keycode, lradc->input->keybit); + + input_set_drvdata(lradc->input, lradc); + + lradc->base = devm_ioremap_resource(dev, + platform_get_resource(pdev, IORESOURCE_MEM, 0)); + if (IS_ERR(lradc->base)) + return PTR_ERR(lradc->base); + + error = devm_request_irq(dev, platform_get_irq(pdev, 0), + sun4i_lradc_irq, 0, + "sun4i-a10-lradc-keys", lradc); + if (error) + return error; + + error = input_register_device(lradc->input); + if (error) + return error; + + platform_set_drvdata(pdev, lradc); + return 0; +} + +static const struct of_device_id sun4i_lradc_of_match[] = { + { .compatible = "allwinner,sun4i-a10-lradc-keys", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, sun4i_lradc_of_match); + +static struct platform_driver sun4i_lradc_driver = { + .driver = { + .name = "sun4i-a10-lradc-keys", + .of_match_table = of_match_ptr(sun4i_lradc_of_match), + }, + .probe = sun4i_lradc_probe, +}; + +module_platform_driver(sun4i_lradc_driver); + +MODULE_DESCRIPTION("Allwinner sun4i low res adc attached tablet keys driver"); +MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>"); +MODULE_LICENSE("GPL"); diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig index 23297ab6163f..6deb8dae3205 100644 --- a/drivers/input/misc/Kconfig +++ b/drivers/input/misc/Kconfig @@ -93,6 +93,16 @@ config INPUT_BMA150 To compile this driver as a module, choose M here: the module will be called bma150. +config INPUT_E3X0_BUTTON + tristate "NI Ettus Research USRP E3x0 Button support." + default n + help + Say Y here to enable support for the NI Ettus Research + USRP E3x0 Button. + + To compile this driver as a module, choose M here: the + module will be called e3x0_button. + config INPUT_PCSPKR tristate "PC Speaker support" depends on PCSPKR_PLATFORM @@ -394,6 +404,18 @@ config INPUT_CM109 To compile this driver as a module, choose M here: the module will be called cm109. +config INPUT_REGULATOR_HAPTIC + tristate "Regulator haptics support" + depends on REGULATOR + select INPUT_FF_MEMLESS + help + This option enables device driver support for the haptic controlled + by a regulator. This driver supports ff-memless interface + from input framework. + + To compile this driver as a module, choose M here: the + module will be called regulator-haptic. + config INPUT_RETU_PWRBUTTON tristate "Retu Power button Driver" depends on MFD_RETU @@ -404,6 +426,27 @@ config INPUT_RETU_PWRBUTTON To compile this driver as a module, choose M here. The module will be called retu-pwrbutton. +config INPUT_TPS65218_PWRBUTTON + tristate "TPS65218 Power button driver" + depends on MFD_TPS65218 + help + Say Y here if you want to enable power buttong reporting for + the TPS65218 Power Management IC device. + + To compile this driver as a module, choose M here. The module will + be called tps65218-pwrbutton. + +config INPUT_AXP20X_PEK + tristate "X-Powers AXP20X power button driver" + depends on MFD_AXP20X + help + Say Y here if you want to enable power key reporting via the + AXP20X PMIC. + + To compile this driver as a module, choose M here. The module will + be called axp20x-pek. + + config INPUT_TWL4030_PWRBUTTON tristate "TWL4030 Power button Driver" depends on TWL4030_CORE diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile index 19c760361f80..403a1a54a76c 100644 --- a/drivers/input/misc/Makefile +++ b/drivers/input/misc/Makefile @@ -26,6 +26,7 @@ obj-$(CONFIG_INPUT_COBALT_BTNS) += cobalt_btns.o obj-$(CONFIG_INPUT_DA9052_ONKEY) += da9052_onkey.o obj-$(CONFIG_INPUT_DA9055_ONKEY) += da9055_onkey.o obj-$(CONFIG_INPUT_DM355EVM) += dm355evm_keys.o +obj-$(CONFIG_INPUT_E3X0_BUTTON) += e3x0-button.o obj-$(CONFIG_INPUT_DRV260X_HAPTICS) += drv260x.o obj-$(CONFIG_INPUT_DRV2667_HAPTICS) += drv2667.o obj-$(CONFIG_INPUT_GP2A) += gp2ap002a00f.o @@ -53,12 +54,15 @@ obj-$(CONFIG_INPUT_PMIC8XXX_PWRKEY) += pmic8xxx-pwrkey.o obj-$(CONFIG_INPUT_POWERMATE) += powermate.o obj-$(CONFIG_INPUT_PWM_BEEPER) += pwm-beeper.o obj-$(CONFIG_INPUT_RB532_BUTTON) += rb532_button.o +obj-$(CONFIG_INPUT_REGULATOR_HAPTIC) += regulator-haptic.o obj-$(CONFIG_INPUT_RETU_PWRBUTTON) += retu-pwrbutton.o +obj-$(CONFIG_INPUT_AXP20X_PEK) += axp20x-pek.o obj-$(CONFIG_INPUT_GPIO_ROTARY_ENCODER) += rotary_encoder.o obj-$(CONFIG_INPUT_SGI_BTNS) += sgi_btns.o obj-$(CONFIG_INPUT_SIRFSOC_ONKEY) += sirfsoc-onkey.o obj-$(CONFIG_INPUT_SOC_BUTTON_ARRAY) += soc_button_array.o obj-$(CONFIG_INPUT_SPARCSPKR) += sparcspkr.o +obj-$(CONFIG_INPUT_TPS65218_PWRBUTTON) += tps65218-pwrbutton.o obj-$(CONFIG_INPUT_TWL4030_PWRBUTTON) += twl4030-pwrbutton.o obj-$(CONFIG_INPUT_TWL4030_VIBRA) += twl4030-vibra.o obj-$(CONFIG_INPUT_TWL6040_VIBRA) += twl6040-vibra.o diff --git a/drivers/input/misc/axp20x-pek.c b/drivers/input/misc/axp20x-pek.c new file mode 100644 index 000000000000..f1c844739cd7 --- /dev/null +++ b/drivers/input/misc/axp20x-pek.c @@ -0,0 +1,290 @@ +/* + * axp20x power button driver. + * + * Copyright (C) 2013 Carlo Caione <carlo@caione.org> + * + * This file is subject to the terms and conditions of the GNU General + * Public License. See the file "COPYING" in the main directory of this + * archive for more details. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/errno.h> +#include <linux/irq.h> +#include <linux/init.h> +#include <linux/input.h> +#include <linux/interrupt.h> +#include <linux/kernel.h> +#include <linux/mfd/axp20x.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> +#include <linux/slab.h> + +#define AXP20X_PEK_STARTUP_MASK (0xc0) +#define AXP20X_PEK_SHUTDOWN_MASK (0x03) + +struct axp20x_pek { + struct axp20x_dev *axp20x; + struct input_dev *input; + int irq_dbr; + int irq_dbf; +}; + +struct axp20x_time { + unsigned int time; + unsigned int idx; +}; + +static const struct axp20x_time startup_time[] = { + { .time = 128, .idx = 0 }, + { .time = 1000, .idx = 2 }, + { .time = 3000, .idx = 1 }, + { .time = 2000, .idx = 3 }, +}; + +static const struct axp20x_time shutdown_time[] = { + { .time = 4000, .idx = 0 }, + { .time = 6000, .idx = 1 }, + { .time = 8000, .idx = 2 }, + { .time = 10000, .idx = 3 }, +}; + +struct axp20x_pek_ext_attr { + const struct axp20x_time *p_time; + unsigned int mask; +}; + +static struct axp20x_pek_ext_attr axp20x_pek_startup_ext_attr = { + .p_time = startup_time, + .mask = AXP20X_PEK_STARTUP_MASK, +}; + +static struct axp20x_pek_ext_attr axp20x_pek_shutdown_ext_attr = { + .p_time = shutdown_time, + .mask = AXP20X_PEK_SHUTDOWN_MASK, +}; + +static struct axp20x_pek_ext_attr *get_axp_ext_attr(struct device_attribute *attr) +{ + return container_of(attr, struct dev_ext_attribute, attr)->var; +} + +static ssize_t axp20x_show_ext_attr(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct axp20x_pek *axp20x_pek = dev_get_drvdata(dev); + struct axp20x_pek_ext_attr *axp20x_ea = get_axp_ext_attr(attr); + unsigned int val; + int ret, i; + + ret = regmap_read(axp20x_pek->axp20x->regmap, AXP20X_PEK_KEY, &val); + if (ret != 0) + return ret; + + val &= axp20x_ea->mask; + val >>= ffs(axp20x_ea->mask) - 1; + + for (i = 0; i < 4; i++) + if (val == axp20x_ea->p_time[i].idx) + val = axp20x_ea->p_time[i].time; + + return sprintf(buf, "%u\n", val); +} + +static ssize_t axp20x_store_ext_attr(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct axp20x_pek *axp20x_pek = dev_get_drvdata(dev); + struct axp20x_pek_ext_attr *axp20x_ea = get_axp_ext_attr(attr); + char val_str[20]; + size_t len; + int ret, i; + unsigned int val, idx = 0; + unsigned int best_err = UINT_MAX; + + val_str[sizeof(val_str) - 1] = '\0'; + strncpy(val_str, buf, sizeof(val_str) - 1); + len = strlen(val_str); + + if (len && val_str[len - 1] == '\n') + val_str[len - 1] = '\0'; + + ret = kstrtouint(val_str, 10, &val); + if (ret) + return ret; + + for (i = 3; i >= 0; i--) { + unsigned int err; + + err = abs(axp20x_ea->p_time[i].time - val); + if (err < best_err) { + best_err = err; + idx = axp20x_ea->p_time[i].idx; + } + + if (!err) + break; + } + + idx <<= ffs(axp20x_ea->mask) - 1; + ret = regmap_update_bits(axp20x_pek->axp20x->regmap, + AXP20X_PEK_KEY, + axp20x_ea->mask, idx); + if (ret != 0) + return -EINVAL; + + return count; +} + +static struct dev_ext_attribute axp20x_dev_attr_startup = { + .attr = __ATTR(startup, 0644, axp20x_show_ext_attr, axp20x_store_ext_attr), + .var = &axp20x_pek_startup_ext_attr, +}; + +static struct dev_ext_attribute axp20x_dev_attr_shutdown = { + .attr = __ATTR(shutdown, 0644, axp20x_show_ext_attr, axp20x_store_ext_attr), + .var = &axp20x_pek_shutdown_ext_attr, +}; + +static struct attribute *axp20x_attributes[] = { + &axp20x_dev_attr_startup.attr.attr, + &axp20x_dev_attr_shutdown.attr.attr, + NULL, +}; + +static const struct attribute_group axp20x_attribute_group = { + .attrs = axp20x_attributes, +}; + +static irqreturn_t axp20x_pek_irq(int irq, void *pwr) +{ + struct input_dev *idev = pwr; + struct axp20x_pek *axp20x_pek = input_get_drvdata(idev); + + if (irq == axp20x_pek->irq_dbr) + input_report_key(idev, KEY_POWER, true); + else if (irq == axp20x_pek->irq_dbf) + input_report_key(idev, KEY_POWER, false); + + input_sync(idev); + + return IRQ_HANDLED; +} + +static void axp20x_remove_sysfs_group(void *_data) +{ + struct device *dev = _data; + + sysfs_remove_group(&dev->kobj, &axp20x_attribute_group); +} + +static int axp20x_pek_probe(struct platform_device *pdev) +{ + struct axp20x_pek *axp20x_pek; + struct axp20x_dev *axp20x; + struct input_dev *idev; + int error; + + axp20x_pek = devm_kzalloc(&pdev->dev, sizeof(struct axp20x_pek), + GFP_KERNEL); + if (!axp20x_pek) + return -ENOMEM; + + axp20x_pek->axp20x = dev_get_drvdata(pdev->dev.parent); + axp20x = axp20x_pek->axp20x; + + axp20x_pek->irq_dbr = platform_get_irq_byname(pdev, "PEK_DBR"); + if (axp20x_pek->irq_dbr < 0) { + dev_err(&pdev->dev, "No IRQ for PEK_DBR, error=%d\n", + axp20x_pek->irq_dbr); + return axp20x_pek->irq_dbr; + } + axp20x_pek->irq_dbr = regmap_irq_get_virq(axp20x->regmap_irqc, + axp20x_pek->irq_dbr); + + axp20x_pek->irq_dbf = platform_get_irq_byname(pdev, "PEK_DBF"); + if (axp20x_pek->irq_dbf < 0) { + dev_err(&pdev->dev, "No IRQ for PEK_DBF, error=%d\n", + axp20x_pek->irq_dbf); + return axp20x_pek->irq_dbf; + } + axp20x_pek->irq_dbf = regmap_irq_get_virq(axp20x->regmap_irqc, + axp20x_pek->irq_dbf); + + axp20x_pek->input = devm_input_allocate_device(&pdev->dev); + if (!axp20x_pek->input) + return -ENOMEM; + + idev = axp20x_pek->input; + + idev->name = "axp20x-pek"; + idev->phys = "m1kbd/input2"; + idev->dev.parent = &pdev->dev; + + input_set_capability(idev, EV_KEY, KEY_POWER); + + input_set_drvdata(idev, axp20x_pek); + + error = devm_request_any_context_irq(&pdev->dev, axp20x_pek->irq_dbr, + axp20x_pek_irq, 0, + "axp20x-pek-dbr", idev); + if (error < 0) { + dev_err(axp20x->dev, "Failed to request dbr IRQ#%d: %d\n", + axp20x_pek->irq_dbr, error); + return error; + } + + error = devm_request_any_context_irq(&pdev->dev, axp20x_pek->irq_dbf, + axp20x_pek_irq, 0, + "axp20x-pek-dbf", idev); + if (error < 0) { + dev_err(axp20x->dev, "Failed to request dbf IRQ#%d: %d\n", + axp20x_pek->irq_dbf, error); + return error; + } + + error = sysfs_create_group(&pdev->dev.kobj, &axp20x_attribute_group); + if (error) { + dev_err(axp20x->dev, "Failed to create sysfs attributes: %d\n", + error); + return error; + } + + error = devm_add_action(&pdev->dev, + axp20x_remove_sysfs_group, &pdev->dev); + if (error) { + axp20x_remove_sysfs_group(&pdev->dev); + dev_err(&pdev->dev, "Failed to add sysfs cleanup action: %d\n", + error); + return error; + } + + error = input_register_device(idev); + if (error) { + dev_err(axp20x->dev, "Can't register input device: %d\n", + error); + return error; + } + + platform_set_drvdata(pdev, axp20x_pek); + + return 0; +} + +static struct platform_driver axp20x_pek_driver = { + .probe = axp20x_pek_probe, + .driver = { + .name = "axp20x-pek", + }, +}; +module_platform_driver(axp20x_pek_driver); + +MODULE_DESCRIPTION("axp20x Power Button"); +MODULE_AUTHOR("Carlo Caione <carlo@caione.org>"); +MODULE_LICENSE("GPL"); diff --git a/drivers/input/misc/drv260x.c b/drivers/input/misc/drv260x.c index a364e109ca7c..599578042ea0 100644 --- a/drivers/input/misc/drv260x.c +++ b/drivers/input/misc/drv260x.c @@ -733,7 +733,6 @@ static struct i2c_driver drv260x_driver = { }; module_i2c_driver(drv260x_driver); -MODULE_ALIAS("platform:drv260x-haptics"); MODULE_DESCRIPTION("TI DRV260x haptics driver"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Dan Murphy <dmurphy@ti.com>"); diff --git a/drivers/input/misc/drv2667.c b/drivers/input/misc/drv2667.c index a021744e608c..fc0fddf0896a 100644 --- a/drivers/input/misc/drv2667.c +++ b/drivers/input/misc/drv2667.c @@ -492,7 +492,6 @@ static struct i2c_driver drv2667_driver = { }; module_i2c_driver(drv2667_driver); -MODULE_ALIAS("platform:drv2667-haptics"); MODULE_DESCRIPTION("TI DRV2667 haptics driver"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Dan Murphy <dmurphy@ti.com>"); diff --git a/drivers/input/misc/e3x0-button.c b/drivers/input/misc/e3x0-button.c new file mode 100644 index 000000000000..13bfca8a7b16 --- /dev/null +++ b/drivers/input/misc/e3x0-button.c @@ -0,0 +1,157 @@ +/* + * Copyright (c) 2014, National Instruments Corp. All rights reserved. + * + * Driver for NI Ettus Research USRP E3x0 Button Driver + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/device.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/input.h> +#include <linux/interrupt.h> +#include <linux/of.h> +#include <linux/slab.h> + +static irqreturn_t e3x0_button_release_handler(int irq, void *data) +{ + struct input_dev *idev = data; + + input_report_key(idev, KEY_POWER, 0); + input_sync(idev); + + return IRQ_HANDLED; +} + +static irqreturn_t e3x0_button_press_handler(int irq, void *data) +{ + struct input_dev *idev = data; + + input_report_key(idev, KEY_POWER, 1); + pm_wakeup_event(idev->dev.parent, 0); + input_sync(idev); + + return IRQ_HANDLED; +} + +static int __maybe_unused e3x0_button_suspend(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + + if (device_may_wakeup(dev)) + enable_irq_wake(platform_get_irq_byname(pdev, "press")); + + return 0; +} + +static int __maybe_unused e3x0_button_resume(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + + if (device_may_wakeup(dev)) + disable_irq_wake(platform_get_irq_byname(pdev, "press")); + + return 0; +} + +static SIMPLE_DEV_PM_OPS(e3x0_button_pm_ops, + e3x0_button_suspend, e3x0_button_resume); + +static int e3x0_button_probe(struct platform_device *pdev) +{ + struct input_dev *input; + int irq_press, irq_release; + int error; + + irq_press = platform_get_irq_byname(pdev, "press"); + if (irq_press < 0) { + dev_err(&pdev->dev, "No IRQ for 'press', error=%d\n", + irq_press); + return irq_press; + } + + irq_release = platform_get_irq_byname(pdev, "release"); + if (irq_release < 0) { + dev_err(&pdev->dev, "No IRQ for 'release', error=%d\n", + irq_release); + return irq_release; + } + + input = devm_input_allocate_device(&pdev->dev); + if (!input) + return -ENOMEM; + + input->name = "NI Ettus Research USRP E3x0 Button Driver"; + input->phys = "e3x0_button/input0"; + input->dev.parent = &pdev->dev; + + input_set_capability(input, EV_KEY, KEY_POWER); + + error = devm_request_irq(&pdev->dev, irq_press, + e3x0_button_press_handler, 0, + "e3x0-button", input); + if (error) { + dev_err(&pdev->dev, "Failed to request 'press' IRQ#%d: %d\n", + irq_press, error); + return error; + } + + error = devm_request_irq(&pdev->dev, irq_release, + e3x0_button_release_handler, 0, + "e3x0-button", input); + if (error) { + dev_err(&pdev->dev, "Failed to request 'release' IRQ#%d: %d\n", + irq_release, error); + return error; + } + + error = input_register_device(input); + if (error) { + dev_err(&pdev->dev, "Can't register input device: %d\n", error); + return error; + } + + platform_set_drvdata(pdev, input); + device_init_wakeup(&pdev->dev, 1); + return 0; +} + +static int e3x0_button_remove(struct platform_device *pdev) +{ + device_init_wakeup(&pdev->dev, 0); + return 0; +} + +#ifdef CONFIG_OF +static const struct of_device_id e3x0_button_match[] = { + { .compatible = "ettus,e3x0-button", }, + { } +}; +MODULE_DEVICE_TABLE(of, e3x0_button_match); +#endif + +static struct platform_driver e3x0_button_driver = { + .driver = { + .name = "e3x0-button", + .of_match_table = of_match_ptr(e3x0_button_match), + .pm = &e3x0_button_pm_ops, + }, + .probe = e3x0_button_probe, + .remove = e3x0_button_remove, +}; + +module_platform_driver(e3x0_button_driver); + +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Moritz Fischer <moritz.fischer@ettus.com>"); +MODULE_DESCRIPTION("NI Ettus Research USRP E3x0 Button driver"); +MODULE_ALIAS("platform:e3x0-button"); diff --git a/drivers/input/misc/regulator-haptic.c b/drivers/input/misc/regulator-haptic.c new file mode 100644 index 000000000000..132eb914ea3e --- /dev/null +++ b/drivers/input/misc/regulator-haptic.c @@ -0,0 +1,266 @@ +/* + * Regulator haptic driver + * + * Copyright (c) 2014 Samsung Electronics Co., Ltd. + * Author: Jaewon Kim <jaewon02.kim@samsung.com> + * Author: Hyunhee Kim <hyunhee.kim@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/input.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/platform_data/regulator-haptic.h> +#include <linux/platform_device.h> +#include <linux/regulator/consumer.h> +#include <linux/slab.h> + +#define MAX_MAGNITUDE_SHIFT 16 + +struct regulator_haptic { + struct device *dev; + struct input_dev *input_dev; + struct regulator *regulator; + + struct work_struct work; + struct mutex mutex; + + bool active; + bool suspended; + + unsigned int max_volt; + unsigned int min_volt; + unsigned int magnitude; +}; + +static int regulator_haptic_toggle(struct regulator_haptic *haptic, bool on) +{ + int error; + + if (haptic->active != on) { + + error = on ? regulator_enable(haptic->regulator) : + regulator_disable(haptic->regulator); + if (error) { + dev_err(haptic->dev, + "failed to switch regulator %s: %d\n", + on ? "on" : "off", error); + return error; + } + + haptic->active = on; + } + + return 0; +} + +static int regulator_haptic_set_voltage(struct regulator_haptic *haptic, + unsigned int magnitude) +{ + u64 volt_mag_multi; + unsigned int intensity; + int error; + + volt_mag_multi = (u64)(haptic->max_volt - haptic->min_volt) * magnitude; + intensity = (unsigned int)(volt_mag_multi >> MAX_MAGNITUDE_SHIFT); + + error = regulator_set_voltage(haptic->regulator, + intensity + haptic->min_volt, + haptic->max_volt); + if (error) { + dev_err(haptic->dev, "cannot set regulator voltage to %d: %d\n", + intensity + haptic->min_volt, error); + return error; + } + + regulator_haptic_toggle(haptic, !!magnitude); + + return 0; +} + +static void regulator_haptic_work(struct work_struct *work) +{ + struct regulator_haptic *haptic = container_of(work, + struct regulator_haptic, work); + + mutex_lock(&haptic->mutex); + + if (!haptic->suspended) + regulator_haptic_set_voltage(haptic, haptic->magnitude); + + mutex_unlock(&haptic->mutex); +} + +static int regulator_haptic_play_effect(struct input_dev *input, void *data, + struct ff_effect *effect) +{ + struct regulator_haptic *haptic = input_get_drvdata(input); + + haptic->magnitude = effect->u.rumble.strong_magnitude; + if (!haptic->magnitude) + haptic->magnitude = effect->u.rumble.weak_magnitude; + + schedule_work(&haptic->work); + + return 0; +} + +static void regulator_haptic_close(struct input_dev *input) +{ + struct regulator_haptic *haptic = input_get_drvdata(input); + + cancel_work_sync(&haptic->work); + regulator_haptic_set_voltage(haptic, 0); +} + +static int __maybe_unused +regulator_haptic_parse_dt(struct device *dev, struct regulator_haptic *haptic) +{ + struct device_node *node; + int error; + + node = dev->of_node; + if(!node) { + dev_err(dev, "Missing dveice tree data\n"); + return -EINVAL; + } + + error = of_property_read_u32(node, "max-microvolt", &haptic->max_volt); + if (error) { + dev_err(dev, "cannot parse max-microvolt\n"); + return error; + } + + error = of_property_read_u32(node, "min-microvolt", &haptic->min_volt); + if (error) { + dev_err(dev, "cannot parse min-microvolt\n"); + return error; + } + + return 0; +} + +static int regulator_haptic_probe(struct platform_device *pdev) +{ + const struct regulator_haptic_data *pdata = dev_get_platdata(&pdev->dev); + struct regulator_haptic *haptic; + struct input_dev *input_dev; + int error; + + haptic = devm_kzalloc(&pdev->dev, sizeof(*haptic), GFP_KERNEL); + if (!haptic) + return -ENOMEM; + + platform_set_drvdata(pdev, haptic); + haptic->dev = &pdev->dev; + mutex_init(&haptic->mutex); + INIT_WORK(&haptic->work, regulator_haptic_work); + + if (pdata) { + haptic->max_volt = pdata->max_volt; + haptic->min_volt = pdata->min_volt; + } else if (IS_ENABLED(CONFIG_OF)) { + error = regulator_haptic_parse_dt(&pdev->dev, haptic); + if (error) + return error; + } else { + dev_err(&pdev->dev, "Missing platform data\n"); + return -EINVAL; + } + + haptic->regulator = devm_regulator_get_exclusive(&pdev->dev, "haptic"); + if (IS_ERR(haptic->regulator)) { + dev_err(&pdev->dev, "failed to get regulator\n"); + return PTR_ERR(haptic->regulator); + } + + input_dev = devm_input_allocate_device(&pdev->dev); + if (!input_dev) + return -ENOMEM; + + haptic->input_dev = input_dev; + haptic->input_dev->name = "regulator-haptic"; + haptic->input_dev->dev.parent = &pdev->dev; + haptic->input_dev->close = regulator_haptic_close; + input_set_drvdata(haptic->input_dev, haptic); + input_set_capability(haptic->input_dev, EV_FF, FF_RUMBLE); + + error = input_ff_create_memless(input_dev, NULL, + regulator_haptic_play_effect); + if (error) { + dev_err(&pdev->dev, "failed to create force-feedback\n"); + return error; + } + + error = input_register_device(haptic->input_dev); + if (error) { + dev_err(&pdev->dev, "failed to register input device\n"); + return error; + } + + return 0; +} + +static int __maybe_unused regulator_haptic_suspend(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct regulator_haptic *haptic = platform_get_drvdata(pdev); + int error; + + error = mutex_lock_interruptible(&haptic->mutex); + if (error) + return error; + + regulator_haptic_set_voltage(haptic, 0); + + haptic->suspended = true; + + mutex_unlock(&haptic->mutex); + + return 0; +} + +static int __maybe_unused regulator_haptic_resume(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct regulator_haptic *haptic = platform_get_drvdata(pdev); + unsigned int magnitude; + + mutex_lock(&haptic->mutex); + + haptic->suspended = false; + + magnitude = ACCESS_ONCE(haptic->magnitude); + if (magnitude) + regulator_haptic_set_voltage(haptic, magnitude); + + mutex_unlock(&haptic->mutex); + + return 0; +} + +static SIMPLE_DEV_PM_OPS(regulator_haptic_pm_ops, + regulator_haptic_suspend, regulator_haptic_resume); + +static struct of_device_id regulator_haptic_dt_match[] = { + { .compatible = "regulator-haptic" }, + { /* sentinel */ }, +}; + +static struct platform_driver regulator_haptic_driver = { + .probe = regulator_haptic_probe, + .driver = { + .name = "regulator-haptic", + .of_match_table = regulator_haptic_dt_match, + .pm = ®ulator_haptic_pm_ops, + }, +}; +module_platform_driver(regulator_haptic_driver); + +MODULE_AUTHOR("Jaewon Kim <jaewon02.kim@samsung.com>"); +MODULE_AUTHOR("Hyunhee Kim <hyunhee.kim@samsung.com>"); +MODULE_DESCRIPTION("Regulator haptic driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/input/misc/tps65218-pwrbutton.c b/drivers/input/misc/tps65218-pwrbutton.c new file mode 100644 index 000000000000..54508dec4eb3 --- /dev/null +++ b/drivers/input/misc/tps65218-pwrbutton.c @@ -0,0 +1,126 @@ +/* + * Texas Instruments' TPS65218 Power Button Input Driver + * + * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/ + * Author: Felipe Balbi <balbi@ti.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/init.h> +#include <linux/input.h> +#include <linux/interrupt.h> +#include <linux/kernel.h> +#include <linux/mfd/tps65218.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/platform_device.h> +#include <linux/slab.h> + +struct tps65218_pwrbutton { + struct device *dev; + struct tps65218 *tps; + struct input_dev *idev; +}; + +static irqreturn_t tps65218_pwr_irq(int irq, void *_pwr) +{ + struct tps65218_pwrbutton *pwr = _pwr; + unsigned int reg; + int error; + + error = tps65218_reg_read(pwr->tps, TPS65218_REG_STATUS, ®); + if (error) { + dev_err(pwr->dev, "can't read register: %d\n", error); + goto out; + } + + if (reg & TPS65218_STATUS_PB_STATE) { + input_report_key(pwr->idev, KEY_POWER, 1); + pm_wakeup_event(pwr->dev, 0); + } else { + input_report_key(pwr->idev, KEY_POWER, 0); + } + + input_sync(pwr->idev); + +out: + return IRQ_HANDLED; +} + +static int tps65218_pwron_probe(struct platform_device *pdev) +{ + struct tps65218 *tps = dev_get_drvdata(pdev->dev.parent); + struct device *dev = &pdev->dev; + struct tps65218_pwrbutton *pwr; + struct input_dev *idev; + int error; + int irq; + + pwr = devm_kzalloc(dev, sizeof(*pwr), GFP_KERNEL); + if (!pwr) + return -ENOMEM; + + idev = devm_input_allocate_device(dev); + if (!idev) + return -ENOMEM; + + idev->name = "tps65218_pwrbutton"; + idev->phys = "tps65218_pwrbutton/input0"; + idev->dev.parent = dev; + idev->id.bustype = BUS_I2C; + + input_set_capability(idev, EV_KEY, KEY_POWER); + + pwr->tps = tps; + pwr->dev = dev; + pwr->idev = idev; + platform_set_drvdata(pdev, pwr); + device_init_wakeup(dev, true); + + irq = platform_get_irq(pdev, 0); + error = devm_request_threaded_irq(dev, irq, NULL, tps65218_pwr_irq, + IRQF_TRIGGER_RISING | + IRQF_TRIGGER_FALLING | + IRQF_ONESHOT, + "tps65218-pwrbutton", pwr); + if (error) { + dev_err(dev, "failed to request IRQ #%d: %d\n", + irq, error); + return error; + } + + error= input_register_device(idev); + if (error) { + dev_err(dev, "Can't register power button: %d\n", error); + return error; + } + + return 0; +} + +static struct of_device_id of_tps65218_pwr_match[] = { + { .compatible = "ti,tps65218-pwrbutton" }, + { }, +}; +MODULE_DEVICE_TABLE(of, of_tps65218_pwr_match); + +static struct platform_driver tps65218_pwron_driver = { + .probe = tps65218_pwron_probe, + .driver = { + .name = "tps65218_pwrbutton", + .of_match_table = of_tps65218_pwr_match, + }, +}; +module_platform_driver(tps65218_pwron_driver); + +MODULE_DESCRIPTION("TPS65218 Power Button"); +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); diff --git a/drivers/input/mouse/Kconfig b/drivers/input/mouse/Kconfig index d8b46b0f2dbe..4658b5d41dd7 100644 --- a/drivers/input/mouse/Kconfig +++ b/drivers/input/mouse/Kconfig @@ -105,19 +105,12 @@ config MOUSE_PS2_ELANTECH Say Y here if you have an Elantech PS/2 touchpad connected to your system. - Note that if you enable this driver you will need an updated - X.org Synaptics driver that does not require ABS_PRESSURE - reports from the touchpad (i.e. post 1.5.0 version). You can - grab a patch for the driver here: - - http://userweb.kernel.org/~dtor/synaptics-no-abspressure.patch - - If unsure, say N. - This driver exposes some configuration registers via sysfs entries. For further information, see <file:Documentation/input/elantech.txt>. + If unsure, say N. + config MOUSE_PS2_SENTELIC bool "Sentelic Finger Sensing Pad PS/2 protocol extension" depends on MOUSE_PS2 @@ -146,6 +139,16 @@ config MOUSE_PS2_OLPC If unsure, say N. +config MOUSE_PS2_FOCALTECH + bool "FocalTech PS/2 mouse protocol extension" if EXPERT + default y + depends on MOUSE_PS2 + help + Say Y here if you have a FocalTech PS/2 TouchPad connected to + your system. + + If unsure, say Y. + config MOUSE_SERIAL tristate "Serial mouse" select SERIO @@ -206,6 +209,7 @@ config MOUSE_BCM5974 config MOUSE_CYAPA tristate "Cypress APA I2C Trackpad support" depends on I2C + select CRC_ITU_T help This driver adds support for Cypress All Points Addressable (APA) I2C Trackpads, including the ones used in 2012 Samsung Chromebooks. diff --git a/drivers/input/mouse/Makefile b/drivers/input/mouse/Makefile index 560003dcac37..8a9c98e76d9c 100644 --- a/drivers/input/mouse/Makefile +++ b/drivers/input/mouse/Makefile @@ -8,7 +8,7 @@ obj-$(CONFIG_MOUSE_AMIGA) += amimouse.o obj-$(CONFIG_MOUSE_APPLETOUCH) += appletouch.o obj-$(CONFIG_MOUSE_ATARI) += atarimouse.o obj-$(CONFIG_MOUSE_BCM5974) += bcm5974.o -obj-$(CONFIG_MOUSE_CYAPA) += cyapa.o +obj-$(CONFIG_MOUSE_CYAPA) += cyapatp.o obj-$(CONFIG_MOUSE_ELAN_I2C) += elan_i2c.o obj-$(CONFIG_MOUSE_GPIO) += gpio_mouse.o obj-$(CONFIG_MOUSE_INPORT) += inport.o @@ -24,6 +24,7 @@ obj-$(CONFIG_MOUSE_SYNAPTICS_I2C) += synaptics_i2c.o obj-$(CONFIG_MOUSE_SYNAPTICS_USB) += synaptics_usb.o obj-$(CONFIG_MOUSE_VSXXXAA) += vsxxxaa.o +cyapatp-objs := cyapa.o cyapa_gen3.o cyapa_gen5.o psmouse-objs := psmouse-base.o synaptics.o focaltech.o psmouse-$(CONFIG_MOUSE_PS2_ALPS) += alps.o diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c index d125a019383f..f205b8be2ce4 100644 --- a/drivers/input/mouse/alps.c +++ b/drivers/input/mouse/alps.c @@ -435,7 +435,7 @@ static void alps_report_mt_data(struct psmouse *psmouse, int n) struct alps_fields *f = &priv->f; int i, slot[MAX_TOUCHES]; - input_mt_assign_slots(dev, slot, f->mt, n); + input_mt_assign_slots(dev, slot, f->mt, n, 0); for (i = 0; i < n; i++) alps_set_slot(dev, slot[i], f->mt[i].x, f->mt[i].y); @@ -475,6 +475,13 @@ static void alps_process_trackstick_packet_v3(struct psmouse *psmouse) struct input_dev *dev = priv->dev2; int x, y, z, left, right, middle; + /* It should be a DualPoint when received trackstick packet */ + if (!(priv->flags & ALPS_DUALPOINT)) { + psmouse_warn(psmouse, + "Rejected trackstick packet from non DualPoint device"); + return; + } + /* Sanity check packet */ if (!(packet[0] & 0x40)) { psmouse_dbg(psmouse, "Bad trackstick packet, discarding\n"); @@ -699,7 +706,8 @@ static void alps_process_touchpad_packet_v3_v5(struct psmouse *psmouse) alps_report_semi_mt_data(psmouse, fingers); - if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) { + if ((priv->flags & ALPS_DUALPOINT) && + !(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) { input_report_key(dev2, BTN_LEFT, f->ts_left); input_report_key(dev2, BTN_RIGHT, f->ts_right); input_report_key(dev2, BTN_MIDDLE, f->ts_middle); @@ -743,8 +751,11 @@ static void alps_process_packet_v6(struct psmouse *psmouse) */ if (packet[5] == 0x7F) { /* It should be a DualPoint when received Trackpoint packet */ - if (!(priv->flags & ALPS_DUALPOINT)) + if (!(priv->flags & ALPS_DUALPOINT)) { + psmouse_warn(psmouse, + "Rejected trackstick packet from non DualPoint device"); return; + } /* Trackpoint packet */ x = packet[1] | ((packet[3] & 0x20) << 2); @@ -881,6 +892,34 @@ static void alps_get_finger_coordinate_v7(struct input_mt_pos *mt, unsigned char *pkt, unsigned char pkt_id) { + /* + * packet-fmt b7 b6 b5 b4 b3 b2 b1 b0 + * Byte0 TWO & MULTI L 1 R M 1 Y0-2 Y0-1 Y0-0 + * Byte0 NEW L 1 X1-5 1 1 Y0-2 Y0-1 Y0-0 + * Byte1 Y0-10 Y0-9 Y0-8 Y0-7 Y0-6 Y0-5 Y0-4 Y0-3 + * Byte2 X0-11 1 X0-10 X0-9 X0-8 X0-7 X0-6 X0-5 + * Byte3 X1-11 1 X0-4 X0-3 1 X0-2 X0-1 X0-0 + * Byte4 TWO X1-10 TWO X1-9 X1-8 X1-7 X1-6 X1-5 X1-4 + * Byte4 MULTI X1-10 TWO X1-9 X1-8 X1-7 X1-6 Y1-5 1 + * Byte4 NEW X1-10 TWO X1-9 X1-8 X1-7 X1-6 0 0 + * Byte5 TWO & NEW Y1-10 0 Y1-9 Y1-8 Y1-7 Y1-6 Y1-5 Y1-4 + * Byte5 MULTI Y1-10 0 Y1-9 Y1-8 Y1-7 Y1-6 F-1 F-0 + * L: Left button + * R / M: Non-clickpads: Right / Middle button + * Clickpads: When > 2 fingers are down, and some fingers + * are in the button area, then the 2 coordinates reported + * are for fingers outside the button area and these report + * extra fingers being present in the right / left button + * area. Note these fingers are not added to the F field! + * so if a TWO packet is received and R = 1 then there are + * 3 fingers down, etc. + * TWO: 1: Two touches present, byte 0/4/5 are in TWO fmt + * 0: If byte 4 bit 0 is 1, then byte 0/4/5 are in MULTI fmt + * otherwise byte 0 bit 4 must be set and byte 0/4/5 are + * in NEW fmt + * F: Number of fingers - 3, 0 means 3 fingers, 1 means 4 ... + */ + mt[0].x = ((pkt[2] & 0x80) << 4); mt[0].x |= ((pkt[2] & 0x3F) << 5); mt[0].x |= ((pkt[3] & 0x30) >> 1); @@ -919,18 +958,21 @@ static void alps_get_finger_coordinate_v7(struct input_mt_pos *mt, static int alps_get_mt_count(struct input_mt_pos *mt) { - int i; + int i, fingers = 0; - for (i = 0; i < MAX_TOUCHES && mt[i].x != 0 && mt[i].y != 0; i++) - /* empty */; + for (i = 0; i < MAX_TOUCHES; i++) { + if (mt[i].x != 0 || mt[i].y != 0) + fingers++; + } - return i; + return fingers; } static int alps_decode_packet_v7(struct alps_fields *f, unsigned char *p, struct psmouse *psmouse) { + struct alps_data *priv = psmouse->private; unsigned char pkt_id; pkt_id = alps_get_packet_id_v7(p); @@ -938,19 +980,52 @@ static int alps_decode_packet_v7(struct alps_fields *f, return 0; if (pkt_id == V7_PACKET_ID_UNKNOWN) return -1; + /* + * NEW packets are send to indicate a discontinuity in the finger + * coordinate reporting. Specifically a finger may have moved from + * slot 0 to 1 or vice versa. INPUT_MT_TRACK takes care of this for + * us. + * + * NEW packets have 3 problems: + * 1) They do not contain middle / right button info (on non clickpads) + * this can be worked around by preserving the old button state + * 2) They do not contain an accurate fingercount, and they are + * typically send when the number of fingers changes. We cannot use + * the old finger count as that may mismatch with the amount of + * touch coordinates we've available in the NEW packet + * 3) Their x data for the second touch is inaccurate leading to + * a possible jump of the x coordinate by 16 units when the first + * non NEW packet comes in + * Since problems 2 & 3 cannot be worked around, just ignore them. + */ + if (pkt_id == V7_PACKET_ID_NEW) + return 1; alps_get_finger_coordinate_v7(f->mt, p, pkt_id); - if (pkt_id == V7_PACKET_ID_TWO || pkt_id == V7_PACKET_ID_MULTI) { - f->left = (p[0] & 0x80) >> 7; + if (pkt_id == V7_PACKET_ID_TWO) + f->fingers = alps_get_mt_count(f->mt); + else /* pkt_id == V7_PACKET_ID_MULTI */ + f->fingers = 3 + (p[5] & 0x03); + + f->left = (p[0] & 0x80) >> 7; + if (priv->flags & ALPS_BUTTONPAD) { + if (p[0] & 0x20) + f->fingers++; + if (p[0] & 0x10) + f->fingers++; + } else { f->right = (p[0] & 0x20) >> 5; f->middle = (p[0] & 0x10) >> 4; } - if (pkt_id == V7_PACKET_ID_TWO) - f->fingers = alps_get_mt_count(f->mt); - else if (pkt_id == V7_PACKET_ID_MULTI) - f->fingers = 3 + (p[5] & 0x03); + /* Sometimes a single touch is reported in mt[1] rather then mt[0] */ + if (f->fingers == 1 && f->mt[0].x == 0 && f->mt[0].y == 0) { + f->mt[0].x = f->mt[1].x; + f->mt[0].y = f->mt[1].y; + f->mt[1].x = 0; + f->mt[1].y = 0; + } return 0; } @@ -962,6 +1037,13 @@ static void alps_process_trackstick_packet_v7(struct psmouse *psmouse) struct input_dev *dev2 = priv->dev2; int x, y, z, left, right, middle; + /* It should be a DualPoint when received trackstick packet */ + if (!(priv->flags & ALPS_DUALPOINT)) { + psmouse_warn(psmouse, + "Rejected trackstick packet from non DualPoint device"); + return; + } + /* * b7 b6 b5 b4 b3 b2 b1 b0 * Byte0 0 1 0 0 1 0 0 0 @@ -2379,14 +2461,24 @@ int alps_init(struct psmouse *psmouse) dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE); } + if (priv->flags & ALPS_DUALPOINT) { + /* + * format of input device name is: "protocol vendor name" + * see function psmouse_switch_protocol() in psmouse-base.c + */ + dev2->name = "AlpsPS/2 ALPS DualPoint Stick"; + dev2->id.product = PSMOUSE_ALPS; + dev2->id.version = priv->proto_version; + } else { + dev2->name = "PS/2 ALPS Mouse"; + dev2->id.product = PSMOUSE_PS2; + dev2->id.version = 0x0000; + } + snprintf(priv->phys, sizeof(priv->phys), "%s/input1", psmouse->ps2dev.serio->phys); dev2->phys = priv->phys; - dev2->name = (priv->flags & ALPS_DUALPOINT) ? - "DualPoint Stick" : "ALPS PS/2 Device"; dev2->id.bustype = BUS_I8042; dev2->id.vendor = 0x0002; - dev2->id.product = PSMOUSE_ALPS; - dev2->id.version = 0x0000; dev2->dev.parent = &psmouse->ps2dev.serio->dev; dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); diff --git a/drivers/input/mouse/bcm5974.c b/drivers/input/mouse/bcm5974.c index c329cdb0b91a..b10709f04615 100644 --- a/drivers/input/mouse/bcm5974.c +++ b/drivers/input/mouse/bcm5974.c @@ -564,7 +564,7 @@ static int report_tp_state(struct bcm5974 *dev, int size) dev->index[n++] = &f[i]; } - input_mt_assign_slots(input, dev->slots, dev->pos, n); + input_mt_assign_slots(input, dev->slots, dev->pos, n, 0); for (i = 0; i < n; i++) report_finger_data(input, dev->slots[i], diff --git a/drivers/input/mouse/cyapa.c b/drivers/input/mouse/cyapa.c index 1bece8cad46f..58f4f6fa4857 100644 --- a/drivers/input/mouse/cyapa.c +++ b/drivers/input/mouse/cyapa.c @@ -20,408 +20,131 @@ #include <linux/input/mt.h> #include <linux/interrupt.h> #include <linux/module.h> +#include <linux/mutex.h> #include <linux/slab.h> +#include <linux/uaccess.h> +#include <linux/pm_runtime.h> +#include <linux/acpi.h> +#include "cyapa.h" -/* APA trackpad firmware generation */ -#define CYAPA_GEN3 0x03 /* support MT-protocol B with tracking ID. */ - -#define CYAPA_NAME "Cypress APA Trackpad (cyapa)" - -/* commands for read/write registers of Cypress trackpad */ -#define CYAPA_CMD_SOFT_RESET 0x00 -#define CYAPA_CMD_POWER_MODE 0x01 -#define CYAPA_CMD_DEV_STATUS 0x02 -#define CYAPA_CMD_GROUP_DATA 0x03 -#define CYAPA_CMD_GROUP_CMD 0x04 -#define CYAPA_CMD_GROUP_QUERY 0x05 -#define CYAPA_CMD_BL_STATUS 0x06 -#define CYAPA_CMD_BL_HEAD 0x07 -#define CYAPA_CMD_BL_CMD 0x08 -#define CYAPA_CMD_BL_DATA 0x09 -#define CYAPA_CMD_BL_ALL 0x0a -#define CYAPA_CMD_BLK_PRODUCT_ID 0x0b -#define CYAPA_CMD_BLK_HEAD 0x0c - -/* report data start reg offset address. */ -#define DATA_REG_START_OFFSET 0x0000 - -#define BL_HEAD_OFFSET 0x00 -#define BL_DATA_OFFSET 0x10 - -/* - * Operational Device Status Register - * - * bit 7: Valid interrupt source - * bit 6 - 4: Reserved - * bit 3 - 2: Power status - * bit 1 - 0: Device status - */ -#define REG_OP_STATUS 0x00 -#define OP_STATUS_SRC 0x80 -#define OP_STATUS_POWER 0x0c -#define OP_STATUS_DEV 0x03 -#define OP_STATUS_MASK (OP_STATUS_SRC | OP_STATUS_POWER | OP_STATUS_DEV) - -/* - * Operational Finger Count/Button Flags Register - * - * bit 7 - 4: Number of touched finger - * bit 3: Valid data - * bit 2: Middle Physical Button - * bit 1: Right Physical Button - * bit 0: Left physical Button - */ -#define REG_OP_DATA1 0x01 -#define OP_DATA_VALID 0x08 -#define OP_DATA_MIDDLE_BTN 0x04 -#define OP_DATA_RIGHT_BTN 0x02 -#define OP_DATA_LEFT_BTN 0x01 -#define OP_DATA_BTN_MASK (OP_DATA_MIDDLE_BTN | OP_DATA_RIGHT_BTN | \ - OP_DATA_LEFT_BTN) - -/* - * Bootloader Status Register - * - * bit 7: Busy - * bit 6 - 5: Reserved - * bit 4: Bootloader running - * bit 3 - 1: Reserved - * bit 0: Checksum valid - */ -#define REG_BL_STATUS 0x01 -#define BL_STATUS_BUSY 0x80 -#define BL_STATUS_RUNNING 0x10 -#define BL_STATUS_DATA_VALID 0x08 -#define BL_STATUS_CSUM_VALID 0x01 - -/* - * Bootloader Error Register - * - * bit 7: Invalid - * bit 6: Invalid security key - * bit 5: Bootloading - * bit 4: Command checksum - * bit 3: Flash protection error - * bit 2: Flash checksum error - * bit 1 - 0: Reserved - */ -#define REG_BL_ERROR 0x02 -#define BL_ERROR_INVALID 0x80 -#define BL_ERROR_INVALID_KEY 0x40 -#define BL_ERROR_BOOTLOADING 0x20 -#define BL_ERROR_CMD_CSUM 0x10 -#define BL_ERROR_FLASH_PROT 0x08 -#define BL_ERROR_FLASH_CSUM 0x04 - -#define BL_STATUS_SIZE 3 /* length of bootloader status registers */ -#define BLK_HEAD_BYTES 32 - -#define PRODUCT_ID_SIZE 16 -#define QUERY_DATA_SIZE 27 -#define REG_PROTOCOL_GEN_QUERY_OFFSET 20 - -#define REG_OFFSET_DATA_BASE 0x0000 -#define REG_OFFSET_COMMAND_BASE 0x0028 -#define REG_OFFSET_QUERY_BASE 0x002a - -#define CAPABILITY_LEFT_BTN_MASK (0x01 << 3) -#define CAPABILITY_RIGHT_BTN_MASK (0x01 << 4) -#define CAPABILITY_MIDDLE_BTN_MASK (0x01 << 5) -#define CAPABILITY_BTN_MASK (CAPABILITY_LEFT_BTN_MASK | \ - CAPABILITY_RIGHT_BTN_MASK | \ - CAPABILITY_MIDDLE_BTN_MASK) - -#define CYAPA_OFFSET_SOFT_RESET REG_OFFSET_COMMAND_BASE - -#define REG_OFFSET_POWER_MODE (REG_OFFSET_COMMAND_BASE + 1) - -#define PWR_MODE_MASK 0xfc -#define PWR_MODE_FULL_ACTIVE (0x3f << 2) -#define PWR_MODE_IDLE (0x05 << 2) /* default sleep time is 50 ms. */ -#define PWR_MODE_OFF (0x00 << 2) - -#define PWR_STATUS_MASK 0x0c -#define PWR_STATUS_ACTIVE (0x03 << 2) -#define PWR_STATUS_IDLE (0x02 << 2) -#define PWR_STATUS_OFF (0x00 << 2) - -/* - * CYAPA trackpad device states. - * Used in register 0x00, bit1-0, DeviceStatus field. - * Other values indicate device is in an abnormal state and must be reset. - */ -#define CYAPA_DEV_NORMAL 0x03 -#define CYAPA_DEV_BUSY 0x01 - -enum cyapa_state { - CYAPA_STATE_OP, - CYAPA_STATE_BL_IDLE, - CYAPA_STATE_BL_ACTIVE, - CYAPA_STATE_BL_BUSY, - CYAPA_STATE_NO_DEVICE, -}; - - -struct cyapa_touch { - /* - * high bits or x/y position value - * bit 7 - 4: high 4 bits of x position value - * bit 3 - 0: high 4 bits of y position value - */ - u8 xy_hi; - u8 x_lo; /* low 8 bits of x position value. */ - u8 y_lo; /* low 8 bits of y position value. */ - u8 pressure; - /* id range is 1 - 15. It is incremented with every new touch. */ - u8 id; -} __packed; - -/* The touch.id is used as the MT slot id, thus max MT slot is 15 */ -#define CYAPA_MAX_MT_SLOTS 15 - -struct cyapa_reg_data { - /* - * bit 0 - 1: device status - * bit 3 - 2: power mode - * bit 6 - 4: reserved - * bit 7: interrupt valid bit - */ - u8 device_status; - /* - * bit 7 - 4: number of fingers currently touching pad - * bit 3: valid data check bit - * bit 2: middle mechanism button state if exists - * bit 1: right mechanism button state if exists - * bit 0: left mechanism button state if exists - */ - u8 finger_btn; - /* CYAPA reports up to 5 touches per packet. */ - struct cyapa_touch touches[5]; -} __packed; - -/* The main device structure */ -struct cyapa { - enum cyapa_state state; - - struct i2c_client *client; - struct input_dev *input; - char phys[32]; /* device physical location */ - bool irq_wake; /* irq wake is enabled */ - bool smbus; - - /* read from query data region. */ - char product_id[16]; - u8 btn_capability; - u8 gen; - int max_abs_x; - int max_abs_y; - int physical_size_x; - int physical_size_y; -}; - -static const u8 bl_deactivate[] = { 0x00, 0xff, 0x3b, 0x00, 0x01, 0x02, 0x03, - 0x04, 0x05, 0x06, 0x07 }; -static const u8 bl_exit[] = { 0x00, 0xff, 0xa5, 0x00, 0x01, 0x02, 0x03, 0x04, - 0x05, 0x06, 0x07 }; - -struct cyapa_cmd_len { - u8 cmd; - u8 len; -}; #define CYAPA_ADAPTER_FUNC_NONE 0 #define CYAPA_ADAPTER_FUNC_I2C 1 #define CYAPA_ADAPTER_FUNC_SMBUS 2 #define CYAPA_ADAPTER_FUNC_BOTH 3 -/* - * macros for SMBus communication - */ -#define SMBUS_READ 0x01 -#define SMBUS_WRITE 0x00 -#define SMBUS_ENCODE_IDX(cmd, idx) ((cmd) | (((idx) & 0x03) << 1)) -#define SMBUS_ENCODE_RW(cmd, rw) ((cmd) | ((rw) & 0x01)) -#define SMBUS_BYTE_BLOCK_CMD_MASK 0x80 -#define SMBUS_GROUP_BLOCK_CMD_MASK 0x40 - - /* for byte read/write command */ -#define CMD_RESET 0 -#define CMD_POWER_MODE 1 -#define CMD_DEV_STATUS 2 -#define SMBUS_BYTE_CMD(cmd) (((cmd) & 0x3f) << 1) -#define CYAPA_SMBUS_RESET SMBUS_BYTE_CMD(CMD_RESET) -#define CYAPA_SMBUS_POWER_MODE SMBUS_BYTE_CMD(CMD_POWER_MODE) -#define CYAPA_SMBUS_DEV_STATUS SMBUS_BYTE_CMD(CMD_DEV_STATUS) - - /* for group registers read/write command */ -#define REG_GROUP_DATA 0 -#define REG_GROUP_CMD 2 -#define REG_GROUP_QUERY 3 -#define SMBUS_GROUP_CMD(grp) (0x80 | (((grp) & 0x07) << 3)) -#define CYAPA_SMBUS_GROUP_DATA SMBUS_GROUP_CMD(REG_GROUP_DATA) -#define CYAPA_SMBUS_GROUP_CMD SMBUS_GROUP_CMD(REG_GROUP_CMD) -#define CYAPA_SMBUS_GROUP_QUERY SMBUS_GROUP_CMD(REG_GROUP_QUERY) - - /* for register block read/write command */ -#define CMD_BL_STATUS 0 -#define CMD_BL_HEAD 1 -#define CMD_BL_CMD 2 -#define CMD_BL_DATA 3 -#define CMD_BL_ALL 4 -#define CMD_BLK_PRODUCT_ID 5 -#define CMD_BLK_HEAD 6 -#define SMBUS_BLOCK_CMD(cmd) (0xc0 | (((cmd) & 0x1f) << 1)) - -/* register block read/write command in bootloader mode */ -#define CYAPA_SMBUS_BL_STATUS SMBUS_BLOCK_CMD(CMD_BL_STATUS) -#define CYAPA_SMBUS_BL_HEAD SMBUS_BLOCK_CMD(CMD_BL_HEAD) -#define CYAPA_SMBUS_BL_CMD SMBUS_BLOCK_CMD(CMD_BL_CMD) -#define CYAPA_SMBUS_BL_DATA SMBUS_BLOCK_CMD(CMD_BL_DATA) -#define CYAPA_SMBUS_BL_ALL SMBUS_BLOCK_CMD(CMD_BL_ALL) - -/* register block read/write command in operational mode */ -#define CYAPA_SMBUS_BLK_PRODUCT_ID SMBUS_BLOCK_CMD(CMD_BLK_PRODUCT_ID) -#define CYAPA_SMBUS_BLK_HEAD SMBUS_BLOCK_CMD(CMD_BLK_HEAD) - -static const struct cyapa_cmd_len cyapa_i2c_cmds[] = { - { CYAPA_OFFSET_SOFT_RESET, 1 }, - { REG_OFFSET_COMMAND_BASE + 1, 1 }, - { REG_OFFSET_DATA_BASE, 1 }, - { REG_OFFSET_DATA_BASE, sizeof(struct cyapa_reg_data) }, - { REG_OFFSET_COMMAND_BASE, 0 }, - { REG_OFFSET_QUERY_BASE, QUERY_DATA_SIZE }, - { BL_HEAD_OFFSET, 3 }, - { BL_HEAD_OFFSET, 16 }, - { BL_HEAD_OFFSET, 16 }, - { BL_DATA_OFFSET, 16 }, - { BL_HEAD_OFFSET, 32 }, - { REG_OFFSET_QUERY_BASE, PRODUCT_ID_SIZE }, - { REG_OFFSET_DATA_BASE, 32 } -}; +#define CYAPA_FW_NAME "cyapa.bin" -static const struct cyapa_cmd_len cyapa_smbus_cmds[] = { - { CYAPA_SMBUS_RESET, 1 }, - { CYAPA_SMBUS_POWER_MODE, 1 }, - { CYAPA_SMBUS_DEV_STATUS, 1 }, - { CYAPA_SMBUS_GROUP_DATA, sizeof(struct cyapa_reg_data) }, - { CYAPA_SMBUS_GROUP_CMD, 2 }, - { CYAPA_SMBUS_GROUP_QUERY, QUERY_DATA_SIZE }, - { CYAPA_SMBUS_BL_STATUS, 3 }, - { CYAPA_SMBUS_BL_HEAD, 16 }, - { CYAPA_SMBUS_BL_CMD, 16 }, - { CYAPA_SMBUS_BL_DATA, 16 }, - { CYAPA_SMBUS_BL_ALL, 32 }, - { CYAPA_SMBUS_BLK_PRODUCT_ID, PRODUCT_ID_SIZE }, - { CYAPA_SMBUS_BLK_HEAD, 16 }, -}; +const char product_id[] = "CYTRA"; -static ssize_t cyapa_i2c_reg_read_block(struct cyapa *cyapa, u8 reg, size_t len, - u8 *values) +static int cyapa_reinitialize(struct cyapa *cyapa); + +static inline bool cyapa_is_bootloader_mode(struct cyapa *cyapa) { - return i2c_smbus_read_i2c_block_data(cyapa->client, reg, len, values); + if (cyapa->gen == CYAPA_GEN5 && cyapa->state == CYAPA_STATE_GEN5_BL) + return true; + + if (cyapa->gen == CYAPA_GEN3 && + cyapa->state >= CYAPA_STATE_BL_BUSY && + cyapa->state <= CYAPA_STATE_BL_ACTIVE) + return true; + + return false; } -static ssize_t cyapa_i2c_reg_write_block(struct cyapa *cyapa, u8 reg, - size_t len, const u8 *values) +static inline bool cyapa_is_operational_mode(struct cyapa *cyapa) { - return i2c_smbus_write_i2c_block_data(cyapa->client, reg, len, values); + if (cyapa->gen == CYAPA_GEN5 && cyapa->state == CYAPA_STATE_GEN5_APP) + return true; + + if (cyapa->gen == CYAPA_GEN3 && cyapa->state == CYAPA_STATE_OP) + return true; + + return false; } -/* - * cyapa_smbus_read_block - perform smbus block read command - * @cyapa - private data structure of the driver - * @cmd - the properly encoded smbus command - * @len - expected length of smbus command result - * @values - buffer to store smbus command result - * - * Returns negative errno, else the number of bytes written. - * - * Note: - * In trackpad device, the memory block allocated for I2C register map - * is 256 bytes, so the max read block for I2C bus is 256 bytes. - */ -static ssize_t cyapa_smbus_read_block(struct cyapa *cyapa, u8 cmd, size_t len, - u8 *values) +/* Returns 0 on success, else negative errno on failure. */ +static ssize_t cyapa_i2c_read(struct cyapa *cyapa, u8 reg, size_t len, + u8 *values) { - ssize_t ret; - u8 index; - u8 smbus_cmd; - u8 *buf; struct i2c_client *client = cyapa->client; + struct i2c_msg msgs[] = { + { + .addr = client->addr, + .flags = 0, + .len = 1, + .buf = ®, + }, + { + .addr = client->addr, + .flags = I2C_M_RD, + .len = len, + .buf = values, + }, + }; + int ret; - if (!(SMBUS_BYTE_BLOCK_CMD_MASK & cmd)) - return -EINVAL; - - if (SMBUS_GROUP_BLOCK_CMD_MASK & cmd) { - /* read specific block registers command. */ - smbus_cmd = SMBUS_ENCODE_RW(cmd, SMBUS_READ); - ret = i2c_smbus_read_block_data(client, smbus_cmd, values); - goto out; - } + ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); - ret = 0; - for (index = 0; index * I2C_SMBUS_BLOCK_MAX < len; index++) { - smbus_cmd = SMBUS_ENCODE_IDX(cmd, index); - smbus_cmd = SMBUS_ENCODE_RW(smbus_cmd, SMBUS_READ); - buf = values + I2C_SMBUS_BLOCK_MAX * index; - ret = i2c_smbus_read_block_data(client, smbus_cmd, buf); - if (ret < 0) - goto out; - } + if (ret != ARRAY_SIZE(msgs)) + return ret < 0 ? ret : -EIO; -out: - return ret > 0 ? len : ret; + return 0; } -static s32 cyapa_read_byte(struct cyapa *cyapa, u8 cmd_idx) +/** + * cyapa_i2c_write - Execute i2c block data write operation + * @cyapa: Handle to this driver + * @ret: Offset of the data to written in the register map + * @len: number of bytes to write + * @values: Data to be written + * + * Return negative errno code on error; return zero when success. + */ +static int cyapa_i2c_write(struct cyapa *cyapa, u8 reg, + size_t len, const void *values) { - u8 cmd; + struct i2c_client *client = cyapa->client; + char buf[32]; + int ret; - if (cyapa->smbus) { - cmd = cyapa_smbus_cmds[cmd_idx].cmd; - cmd = SMBUS_ENCODE_RW(cmd, SMBUS_READ); - } else { - cmd = cyapa_i2c_cmds[cmd_idx].cmd; - } - return i2c_smbus_read_byte_data(cyapa->client, cmd); -} + if (len > sizeof(buf) - 1) + return -ENOMEM; -static s32 cyapa_write_byte(struct cyapa *cyapa, u8 cmd_idx, u8 value) -{ - u8 cmd; + buf[0] = reg; + memcpy(&buf[1], values, len); - if (cyapa->smbus) { - cmd = cyapa_smbus_cmds[cmd_idx].cmd; - cmd = SMBUS_ENCODE_RW(cmd, SMBUS_WRITE); - } else { - cmd = cyapa_i2c_cmds[cmd_idx].cmd; - } - return i2c_smbus_write_byte_data(cyapa->client, cmd, value); + ret = i2c_master_send(client, buf, len + 1); + if (ret != len + 1) + return ret < 0 ? ret : -EIO; + + return 0; } -static ssize_t cyapa_read_block(struct cyapa *cyapa, u8 cmd_idx, u8 *values) +static u8 cyapa_check_adapter_functionality(struct i2c_client *client) { - u8 cmd; - size_t len; + u8 ret = CYAPA_ADAPTER_FUNC_NONE; - if (cyapa->smbus) { - cmd = cyapa_smbus_cmds[cmd_idx].cmd; - len = cyapa_smbus_cmds[cmd_idx].len; - return cyapa_smbus_read_block(cyapa, cmd, len, values); - } else { - cmd = cyapa_i2c_cmds[cmd_idx].cmd; - len = cyapa_i2c_cmds[cmd_idx].len; - return cyapa_i2c_reg_read_block(cyapa, cmd, len, values); - } + if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) + ret |= CYAPA_ADAPTER_FUNC_I2C; + if (i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA | + I2C_FUNC_SMBUS_BLOCK_DATA | + I2C_FUNC_SMBUS_I2C_BLOCK)) + ret |= CYAPA_ADAPTER_FUNC_SMBUS; + return ret; } /* * Query device for its current operating state. - * */ static int cyapa_get_state(struct cyapa *cyapa) { u8 status[BL_STATUS_SIZE]; + u8 cmd[32]; + /* The i2c address of gen4 and gen5 trackpad device must be even. */ + bool even_addr = ((cyapa->client->addr & 0x0001) == 0); + bool smbus = false; + int retries = 2; int error; cyapa->state = CYAPA_STATE_NO_DEVICE; @@ -433,39 +156,74 @@ static int cyapa_get_state(struct cyapa *cyapa) * */ error = cyapa_i2c_reg_read_block(cyapa, BL_HEAD_OFFSET, BL_STATUS_SIZE, - status); + status); /* * On smbus systems in OP mode, the i2c_reg_read will fail with * -ETIMEDOUT. In this case, try again using the smbus equivalent * command. This should return a BL_HEAD indicating CYAPA_STATE_OP. */ - if (cyapa->smbus && (error == -ETIMEDOUT || error == -ENXIO)) - error = cyapa_read_block(cyapa, CYAPA_CMD_BL_STATUS, status); + if (cyapa->smbus && (error == -ETIMEDOUT || error == -ENXIO)) { + if (!even_addr) + error = cyapa_read_block(cyapa, + CYAPA_CMD_BL_STATUS, status); + smbus = true; + } if (error != BL_STATUS_SIZE) goto error; - if ((status[REG_OP_STATUS] & OP_STATUS_SRC) == OP_STATUS_SRC) { - switch (status[REG_OP_STATUS] & OP_STATUS_DEV) { - case CYAPA_DEV_NORMAL: - case CYAPA_DEV_BUSY: - cyapa->state = CYAPA_STATE_OP; - break; - default: - error = -EAGAIN; - goto error; + /* + * Detect trackpad protocol based on characteristic registers and bits. + */ + do { + cyapa->status[REG_OP_STATUS] = status[REG_OP_STATUS]; + cyapa->status[REG_BL_STATUS] = status[REG_BL_STATUS]; + cyapa->status[REG_BL_ERROR] = status[REG_BL_ERROR]; + + if (cyapa->gen == CYAPA_GEN_UNKNOWN || + cyapa->gen == CYAPA_GEN3) { + error = cyapa_gen3_ops.state_parse(cyapa, + status, BL_STATUS_SIZE); + if (!error) + goto out_detected; } - } else { - if (status[REG_BL_STATUS] & BL_STATUS_BUSY) - cyapa->state = CYAPA_STATE_BL_BUSY; - else if (status[REG_BL_ERROR] & BL_ERROR_BOOTLOADING) - cyapa->state = CYAPA_STATE_BL_ACTIVE; - else - cyapa->state = CYAPA_STATE_BL_IDLE; - } + if ((cyapa->gen == CYAPA_GEN_UNKNOWN || + cyapa->gen == CYAPA_GEN5) && + !smbus && even_addr) { + error = cyapa_gen5_ops.state_parse(cyapa, + status, BL_STATUS_SIZE); + if (!error) + goto out_detected; + } + + /* + * Write 0x00 0x00 to trackpad device to force update its + * status, then redo the detection again. + */ + if (!smbus) { + cmd[0] = 0x00; + cmd[1] = 0x00; + error = cyapa_i2c_write(cyapa, 0, 2, cmd); + if (error) + goto error; + + msleep(50); + + error = cyapa_i2c_read(cyapa, BL_HEAD_OFFSET, + BL_STATUS_SIZE, status); + if (error) + goto error; + } + } while (--retries > 0 && !smbus); + + goto error; +out_detected: + if (cyapa->state <= CYAPA_STATE_BL_BUSY) + return -EAGAIN; return 0; + error: return (error < 0) ? error : -EAGAIN; } @@ -482,364 +240,939 @@ error: * Returns: * 0 when the device eventually responds with a valid non-busy state. * -ETIMEDOUT if device never responds (too many -EAGAIN) - * < 0 other errors + * -EAGAIN if bootload is busy, or unknown state. + * < 0 other errors */ -static int cyapa_poll_state(struct cyapa *cyapa, unsigned int timeout) +int cyapa_poll_state(struct cyapa *cyapa, unsigned int timeout) { int error; int tries = timeout / 100; - error = cyapa_get_state(cyapa); - while ((error || cyapa->state >= CYAPA_STATE_BL_BUSY) && tries--) { - msleep(100); + do { error = cyapa_get_state(cyapa); - } - return (error == -EAGAIN || error == -ETIMEDOUT) ? -ETIMEDOUT : error; -} + if (!error && cyapa->state > CYAPA_STATE_BL_BUSY) + return 0; -static int cyapa_bl_deactivate(struct cyapa *cyapa) -{ - int error; - - error = cyapa_i2c_reg_write_block(cyapa, 0, sizeof(bl_deactivate), - bl_deactivate); - if (error) - return error; + msleep(100); + } while (tries--); - /* wait for bootloader to switch to idle state; should take < 100ms */ - msleep(100); - error = cyapa_poll_state(cyapa, 500); - if (error) - return error; - if (cyapa->state != CYAPA_STATE_BL_IDLE) - return -EAGAIN; - return 0; + return (error == -EAGAIN || error == -ETIMEDOUT) ? -ETIMEDOUT : error; } /* - * Exit bootloader + * Check if device is operational. * - * Send bl_exit command, then wait 50 - 100 ms to let device transition to - * operational mode. If this is the first time the device's firmware is - * running, it can take up to 2 seconds to calibrate its sensors. So, poll - * the device's new state for up to 2 seconds. + * An operational device is responding, has exited bootloader, and has + * firmware supported by this driver. * * Returns: + * -ENODEV no device + * -EBUSY no device or in bootloader * -EIO failure while reading from device - * -EAGAIN device is stuck in bootloader, b/c it has invalid firmware - * 0 device is supported and in operational mode + * -ETIMEDOUT timeout failure for bus idle or bus no response + * -EAGAIN device is still in bootloader + * if ->state = CYAPA_STATE_BL_IDLE, device has invalid firmware + * -EINVAL device is in operational mode, but not supported by this driver + * 0 device is supported */ -static int cyapa_bl_exit(struct cyapa *cyapa) +static int cyapa_check_is_operational(struct cyapa *cyapa) { int error; - error = cyapa_i2c_reg_write_block(cyapa, 0, sizeof(bl_exit), bl_exit); + error = cyapa_poll_state(cyapa, 4000); if (error) return error; - /* - * Wait for bootloader to exit, and operation mode to start. - * Normally, this takes at least 50 ms. - */ - usleep_range(50000, 100000); - /* - * In addition, when a device boots for the first time after being - * updated to new firmware, it must first calibrate its sensors, which - * can take up to an additional 2 seconds. - */ - error = cyapa_poll_state(cyapa, 2000); - if (error < 0) - return error; - if (cyapa->state != CYAPA_STATE_OP) - return -EAGAIN; + switch (cyapa->gen) { + case CYAPA_GEN5: + cyapa->ops = &cyapa_gen5_ops; + break; + case CYAPA_GEN3: + cyapa->ops = &cyapa_gen3_ops; + break; + default: + return -ENODEV; + } - return 0; + error = cyapa->ops->operational_check(cyapa); + if (!error && cyapa_is_operational_mode(cyapa)) + cyapa->operational = true; + else + cyapa->operational = false; + + return error; } + /* - * Set device power mode - * + * Returns 0 on device detected, negative errno on no device detected. + * And when the device is detected and opertaional, it will be reset to + * full power active mode automatically. */ -static int cyapa_set_power_mode(struct cyapa *cyapa, u8 power_mode) +static int cyapa_detect(struct cyapa *cyapa) { struct device *dev = &cyapa->client->dev; - int ret; - u8 power; - - if (cyapa->state != CYAPA_STATE_OP) - return 0; + int error; - ret = cyapa_read_byte(cyapa, CYAPA_CMD_POWER_MODE); - if (ret < 0) - return ret; + error = cyapa_check_is_operational(cyapa); + if (error) { + if (error != -ETIMEDOUT && error != -ENODEV && + cyapa_is_bootloader_mode(cyapa)) { + dev_warn(dev, "device detected but not operational\n"); + return 0; + } - power = ret & ~PWR_MODE_MASK; - power |= power_mode & PWR_MODE_MASK; - ret = cyapa_write_byte(cyapa, CYAPA_CMD_POWER_MODE, power); - if (ret < 0) { - dev_err(dev, "failed to set power_mode 0x%02x err = %d\n", - power_mode, ret); - return ret; + dev_err(dev, "no device detected: %d\n", error); + return error; } return 0; } -static int cyapa_get_query_data(struct cyapa *cyapa) +static int cyapa_open(struct input_dev *input) { - u8 query_data[QUERY_DATA_SIZE]; - int ret; + struct cyapa *cyapa = input_get_drvdata(input); + struct i2c_client *client = cyapa->client; + int error; - if (cyapa->state != CYAPA_STATE_OP) - return -EBUSY; + error = mutex_lock_interruptible(&cyapa->state_sync_lock); + if (error) + return error; - ret = cyapa_read_block(cyapa, CYAPA_CMD_GROUP_QUERY, query_data); - if (ret < 0) - return ret; - if (ret != QUERY_DATA_SIZE) - return -EIO; + if (cyapa->operational) { + /* + * though failed to set active power mode, + * but still may be able to work in lower scan rate + * when in operational mode. + */ + error = cyapa->ops->set_power_mode(cyapa, + PWR_MODE_FULL_ACTIVE, 0); + if (error) { + dev_warn(&client->dev, + "set active power failed: %d\n", error); + goto out; + } + } else { + error = cyapa_reinitialize(cyapa); + if (error || !cyapa->operational) { + error = error ? error : -EAGAIN; + goto out; + } + } + + enable_irq(client->irq); + if (!pm_runtime_enabled(&client->dev)) { + pm_runtime_set_active(&client->dev); + pm_runtime_enable(&client->dev); + } +out: + mutex_unlock(&cyapa->state_sync_lock); + return error; +} + +static void cyapa_close(struct input_dev *input) +{ + struct cyapa *cyapa = input_get_drvdata(input); + struct i2c_client *client = cyapa->client; + + mutex_lock(&cyapa->state_sync_lock); + + disable_irq(client->irq); + if (pm_runtime_enabled(&client->dev)) + pm_runtime_disable(&client->dev); + pm_runtime_set_suspended(&client->dev); + + if (cyapa->operational) + cyapa->ops->set_power_mode(cyapa, PWR_MODE_OFF, 0); - memcpy(&cyapa->product_id[0], &query_data[0], 5); - cyapa->product_id[5] = '-'; - memcpy(&cyapa->product_id[6], &query_data[5], 6); - cyapa->product_id[12] = '-'; - memcpy(&cyapa->product_id[13], &query_data[11], 2); - cyapa->product_id[15] = '\0'; + mutex_unlock(&cyapa->state_sync_lock); +} - cyapa->btn_capability = query_data[19] & CAPABILITY_BTN_MASK; +static int cyapa_create_input_dev(struct cyapa *cyapa) +{ + struct device *dev = &cyapa->client->dev; + struct input_dev *input; + int error; - cyapa->gen = query_data[20] & 0x0f; + if (!cyapa->physical_size_x || !cyapa->physical_size_y) + return -EINVAL; - cyapa->max_abs_x = ((query_data[21] & 0xf0) << 4) | query_data[22]; - cyapa->max_abs_y = ((query_data[21] & 0x0f) << 8) | query_data[23]; + input = devm_input_allocate_device(dev); + if (!input) { + dev_err(dev, "failed to allocate memory for input device.\n"); + return -ENOMEM; + } + + input->name = CYAPA_NAME; + input->phys = cyapa->phys; + input->id.bustype = BUS_I2C; + input->id.version = 1; + input->id.product = 0; /* Means any product in eventcomm. */ + input->dev.parent = &cyapa->client->dev; + + input->open = cyapa_open; + input->close = cyapa_close; + + input_set_drvdata(input, cyapa); + + __set_bit(EV_ABS, input->evbit); + + /* Finger position */ + input_set_abs_params(input, ABS_MT_POSITION_X, 0, cyapa->max_abs_x, 0, + 0); + input_set_abs_params(input, ABS_MT_POSITION_Y, 0, cyapa->max_abs_y, 0, + 0); + input_set_abs_params(input, ABS_MT_PRESSURE, 0, cyapa->max_z, 0, 0); + if (cyapa->gen > CYAPA_GEN3) { + input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0); + input_set_abs_params(input, ABS_MT_TOUCH_MINOR, 0, 255, 0, 0); + /* + * Orientation is the angle between the vertical axis and + * the major axis of the contact ellipse. + * The range is -127 to 127. + * the positive direction is clockwise form the vertical axis. + * If the ellipse of contact degenerates into a circle, + * orientation is reported as 0. + * + * Also, for Gen5 trackpad the accurate of this orientation + * value is value + (-30 ~ 30). + */ + input_set_abs_params(input, ABS_MT_ORIENTATION, + -127, 127, 0, 0); + } + if (cyapa->gen >= CYAPA_GEN5) { + input_set_abs_params(input, ABS_MT_WIDTH_MAJOR, 0, 255, 0, 0); + input_set_abs_params(input, ABS_MT_WIDTH_MINOR, 0, 255, 0, 0); + } + + input_abs_set_res(input, ABS_MT_POSITION_X, + cyapa->max_abs_x / cyapa->physical_size_x); + input_abs_set_res(input, ABS_MT_POSITION_Y, + cyapa->max_abs_y / cyapa->physical_size_y); + + if (cyapa->btn_capability & CAPABILITY_LEFT_BTN_MASK) + __set_bit(BTN_LEFT, input->keybit); + if (cyapa->btn_capability & CAPABILITY_MIDDLE_BTN_MASK) + __set_bit(BTN_MIDDLE, input->keybit); + if (cyapa->btn_capability & CAPABILITY_RIGHT_BTN_MASK) + __set_bit(BTN_RIGHT, input->keybit); + + if (cyapa->btn_capability == CAPABILITY_LEFT_BTN_MASK) + __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); + + /* Handle pointer emulation and unused slots in core */ + error = input_mt_init_slots(input, CYAPA_MAX_MT_SLOTS, + INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED); + if (error) { + dev_err(dev, "failed to initialize MT slots: %d\n", error); + return error; + } - cyapa->physical_size_x = - ((query_data[24] & 0xf0) << 4) | query_data[25]; - cyapa->physical_size_y = - ((query_data[24] & 0x0f) << 8) | query_data[26]; + /* Register the device in input subsystem */ + error = input_register_device(input); + if (error) { + dev_err(dev, "failed to register input device: %d\n", error); + return error; + } + cyapa->input = input; return 0; } +static void cyapa_enable_irq_for_cmd(struct cyapa *cyapa) +{ + struct input_dev *input = cyapa->input; + + if (!input || !input->users) { + /* + * When input is NULL, TP must be in deep sleep mode. + * In this mode, later non-power I2C command will always failed + * if not bring it out of deep sleep mode firstly, + * so must command TP to active mode here. + */ + if (!input || cyapa->operational) + cyapa->ops->set_power_mode(cyapa, + PWR_MODE_FULL_ACTIVE, 0); + /* Gen3 always using polling mode for command. */ + if (cyapa->gen >= CYAPA_GEN5) + enable_irq(cyapa->client->irq); + } +} + +static void cyapa_disable_irq_for_cmd(struct cyapa *cyapa) +{ + struct input_dev *input = cyapa->input; + + if (!input || !input->users) { + if (cyapa->gen >= CYAPA_GEN5) + disable_irq(cyapa->client->irq); + if (!input || cyapa->operational) + cyapa->ops->set_power_mode(cyapa, PWR_MODE_OFF, 0); + } +} + /* - * Check if device is operational. + * cyapa_sleep_time_to_pwr_cmd and cyapa_pwr_cmd_to_sleep_time * - * An operational device is responding, has exited bootloader, and has - * firmware supported by this driver. + * These are helper functions that convert to and from integer idle + * times and register settings to write to the PowerMode register. + * The trackpad supports between 20ms to 1000ms scan intervals. + * The time will be increased in increments of 10ms from 20ms to 100ms. + * From 100ms to 1000ms, time will be increased in increments of 20ms. * - * Returns: - * -EBUSY no device or in bootloader - * -EIO failure while reading from device - * -EAGAIN device is still in bootloader - * if ->state = CYAPA_STATE_BL_IDLE, device has invalid firmware - * -EINVAL device is in operational mode, but not supported by this driver - * 0 device is supported + * When Idle_Time < 100, the format to convert Idle_Time to Idle_Command is: + * Idle_Command = Idle Time / 10; + * When Idle_Time >= 100, the format to convert Idle_Time to Idle_Command is: + * Idle_Command = Idle Time / 20 + 5; */ -static int cyapa_check_is_operational(struct cyapa *cyapa) +u8 cyapa_sleep_time_to_pwr_cmd(u16 sleep_time) { - struct device *dev = &cyapa->client->dev; - static const char unique_str[] = "CYTRA"; - int error; + u16 encoded_time; - error = cyapa_poll_state(cyapa, 2000); + sleep_time = clamp_val(sleep_time, 20, 1000); + encoded_time = sleep_time < 100 ? sleep_time / 10 : sleep_time / 20 + 5; + return (encoded_time << 2) & PWR_MODE_MASK; +} + +u16 cyapa_pwr_cmd_to_sleep_time(u8 pwr_mode) +{ + u8 encoded_time = pwr_mode >> 2; + + return (encoded_time < 10) ? encoded_time * 10 + : (encoded_time - 5) * 20; +} + +/* 0 on driver initialize and detected successfully, negative on failure. */ +static int cyapa_initialize(struct cyapa *cyapa) +{ + int error = 0; + + cyapa->state = CYAPA_STATE_NO_DEVICE; + cyapa->gen = CYAPA_GEN_UNKNOWN; + mutex_init(&cyapa->state_sync_lock); + + /* + * Set to hard code default, they will be updated with trackpad set + * default values after probe and initialized. + */ + cyapa->suspend_power_mode = PWR_MODE_SLEEP; + cyapa->suspend_sleep_time = + cyapa_pwr_cmd_to_sleep_time(cyapa->suspend_power_mode); + + /* ops.initialize() is aimed to prepare for module communications. */ + error = cyapa_gen3_ops.initialize(cyapa); + if (!error) + error = cyapa_gen5_ops.initialize(cyapa); if (error) return error; - switch (cyapa->state) { - case CYAPA_STATE_BL_ACTIVE: - error = cyapa_bl_deactivate(cyapa); - if (error) - return error; - /* Fallthrough state */ - case CYAPA_STATE_BL_IDLE: - error = cyapa_bl_exit(cyapa); - if (error) - return error; + error = cyapa_detect(cyapa); + if (error) + return error; - /* Fallthrough state */ - case CYAPA_STATE_OP: - error = cyapa_get_query_data(cyapa); - if (error) - return error; + /* Power down the device until we need it. */ + if (cyapa->operational) + cyapa->ops->set_power_mode(cyapa, PWR_MODE_OFF, 0); - /* only support firmware protocol gen3 */ - if (cyapa->gen != CYAPA_GEN3) { - dev_err(dev, "unsupported protocol version (%d)", - cyapa->gen); - return -EINVAL; - } + return 0; +} + +static int cyapa_reinitialize(struct cyapa *cyapa) +{ + struct device *dev = &cyapa->client->dev; + struct input_dev *input = cyapa->input; + int error; + + if (pm_runtime_enabled(dev)) + pm_runtime_disable(dev); - /* only support product ID starting with CYTRA */ - if (memcmp(cyapa->product_id, unique_str, - sizeof(unique_str) - 1) != 0) { - dev_err(dev, "unsupported product ID (%s)\n", - cyapa->product_id); - return -EINVAL; + /* Avoid command failures when TP was in OFF state. */ + if (cyapa->operational) + cyapa->ops->set_power_mode(cyapa, PWR_MODE_FULL_ACTIVE, 0); + + error = cyapa_detect(cyapa); + if (error) + goto out; + + if (!input && cyapa->operational) { + error = cyapa_create_input_dev(cyapa); + if (error) { + dev_err(dev, "create input_dev instance failed: %d\n", + error); + goto out; } - return 0; + } - default: - return -EIO; +out: + if (!input || !input->users) { + /* Reset to power OFF state to save power when no user open. */ + if (cyapa->operational) + cyapa->ops->set_power_mode(cyapa, PWR_MODE_OFF, 0); + } else if (!error && cyapa->operational) { + /* + * Make sure only enable runtime PM when device is + * in operational mode and input->users > 0. + */ + pm_runtime_set_active(dev); + pm_runtime_enable(dev); } - return 0; + + return error; } static irqreturn_t cyapa_irq(int irq, void *dev_id) { struct cyapa *cyapa = dev_id; struct device *dev = &cyapa->client->dev; - struct input_dev *input = cyapa->input; - struct cyapa_reg_data data; - int i; - int ret; - int num_fingers; + pm_runtime_get_sync(dev); if (device_may_wakeup(dev)) pm_wakeup_event(dev, 0); - ret = cyapa_read_block(cyapa, CYAPA_CMD_GROUP_DATA, (u8 *)&data); - if (ret != sizeof(data)) - goto out; + /* Interrupt event maybe cuased by host command to trackpad device. */ + if (cyapa->ops->irq_cmd_handler(cyapa)) { + /* + * Interrupt event maybe from trackpad device input reporting. + */ + if (!cyapa->input) { + /* + * Still in probling or in firware image + * udpating or reading. + */ + cyapa->ops->sort_empty_output_data(cyapa, + NULL, NULL, NULL); + goto out; + } - if ((data.device_status & OP_STATUS_SRC) != OP_STATUS_SRC || - (data.device_status & OP_STATUS_DEV) != CYAPA_DEV_NORMAL || - (data.finger_btn & OP_DATA_VALID) != OP_DATA_VALID) { - goto out; + if (!cyapa->operational || cyapa->ops->irq_handler(cyapa)) { + if (!mutex_trylock(&cyapa->state_sync_lock)) { + cyapa->ops->sort_empty_output_data(cyapa, + NULL, NULL, NULL); + goto out; + } + cyapa_reinitialize(cyapa); + mutex_unlock(&cyapa->state_sync_lock); + } } - num_fingers = (data.finger_btn >> 4) & 0x0f; - for (i = 0; i < num_fingers; i++) { - const struct cyapa_touch *touch = &data.touches[i]; - /* Note: touch->id range is 1 to 15; slots are 0 to 14. */ - int slot = touch->id - 1; +out: + pm_runtime_mark_last_busy(dev); + pm_runtime_put_sync_autosuspend(dev); + return IRQ_HANDLED; +} + +/* + ************************************************************** + * sysfs interface + ************************************************************** +*/ +#ifdef CONFIG_PM_SLEEP +static ssize_t cyapa_show_suspend_scanrate(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct cyapa *cyapa = dev_get_drvdata(dev); + u8 pwr_cmd = cyapa->suspend_power_mode; + u16 sleep_time; + int len; + int error; + + error = mutex_lock_interruptible(&cyapa->state_sync_lock); + if (error) + return error; + + pwr_cmd = cyapa->suspend_power_mode; + sleep_time = cyapa->suspend_sleep_time; + + mutex_unlock(&cyapa->state_sync_lock); + + switch (pwr_cmd) { + case PWR_MODE_BTN_ONLY: + len = scnprintf(buf, PAGE_SIZE, "%s\n", BTN_ONLY_MODE_NAME); + break; - input_mt_slot(input, slot); - input_mt_report_slot_state(input, MT_TOOL_FINGER, true); - input_report_abs(input, ABS_MT_POSITION_X, - ((touch->xy_hi & 0xf0) << 4) | touch->x_lo); - input_report_abs(input, ABS_MT_POSITION_Y, - ((touch->xy_hi & 0x0f) << 8) | touch->y_lo); - input_report_abs(input, ABS_MT_PRESSURE, touch->pressure); + case PWR_MODE_OFF: + len = scnprintf(buf, PAGE_SIZE, "%s\n", OFF_MODE_NAME); + break; + + default: + len = scnprintf(buf, PAGE_SIZE, "%u\n", + cyapa->gen == CYAPA_GEN3 ? + cyapa_pwr_cmd_to_sleep_time(pwr_cmd) : + sleep_time); + break; } - input_mt_sync_frame(input); + return len; +} - if (cyapa->btn_capability & CAPABILITY_LEFT_BTN_MASK) - input_report_key(input, BTN_LEFT, - data.finger_btn & OP_DATA_LEFT_BTN); +static ssize_t cyapa_update_suspend_scanrate(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct cyapa *cyapa = dev_get_drvdata(dev); + u16 sleep_time; + int error; - if (cyapa->btn_capability & CAPABILITY_MIDDLE_BTN_MASK) - input_report_key(input, BTN_MIDDLE, - data.finger_btn & OP_DATA_MIDDLE_BTN); + error = mutex_lock_interruptible(&cyapa->state_sync_lock); + if (error) + return error; - if (cyapa->btn_capability & CAPABILITY_RIGHT_BTN_MASK) - input_report_key(input, BTN_RIGHT, - data.finger_btn & OP_DATA_RIGHT_BTN); + if (sysfs_streq(buf, BTN_ONLY_MODE_NAME)) { + cyapa->suspend_power_mode = PWR_MODE_BTN_ONLY; + } else if (sysfs_streq(buf, OFF_MODE_NAME)) { + cyapa->suspend_power_mode = PWR_MODE_OFF; + } else if (!kstrtou16(buf, 10, &sleep_time)) { + cyapa->suspend_sleep_time = max_t(u16, sleep_time, 1000); + cyapa->suspend_power_mode = + cyapa_sleep_time_to_pwr_cmd(cyapa->suspend_sleep_time); + } else { + count = -EINVAL; + } - input_sync(input); + mutex_unlock(&cyapa->state_sync_lock); -out: - return IRQ_HANDLED; + return count; } -static u8 cyapa_check_adapter_functionality(struct i2c_client *client) +static DEVICE_ATTR(suspend_scanrate_ms, S_IRUGO|S_IWUSR, + cyapa_show_suspend_scanrate, + cyapa_update_suspend_scanrate); + +static struct attribute *cyapa_power_wakeup_entries[] = { + &dev_attr_suspend_scanrate_ms.attr, + NULL, +}; + +static const struct attribute_group cyapa_power_wakeup_group = { + .name = power_group_name, + .attrs = cyapa_power_wakeup_entries, +}; + +static void cyapa_remove_power_wakeup_group(void *data) { - u8 ret = CYAPA_ADAPTER_FUNC_NONE; + struct cyapa *cyapa = data; - if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) - ret |= CYAPA_ADAPTER_FUNC_I2C; - if (i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA | - I2C_FUNC_SMBUS_BLOCK_DATA | - I2C_FUNC_SMBUS_I2C_BLOCK)) - ret |= CYAPA_ADAPTER_FUNC_SMBUS; - return ret; + sysfs_unmerge_group(&cyapa->client->dev.kobj, + &cyapa_power_wakeup_group); } -static int cyapa_open(struct input_dev *input) +static int cyapa_prepare_wakeup_controls(struct cyapa *cyapa) { - struct cyapa *cyapa = input_get_drvdata(input); struct i2c_client *client = cyapa->client; + struct device *dev = &client->dev; + int error; + + if (device_can_wakeup(dev)) { + error = sysfs_merge_group(&client->dev.kobj, + &cyapa_power_wakeup_group); + if (error) { + dev_err(dev, "failed to add power wakeup group: %d\n", + error); + return error; + } + + error = devm_add_action(dev, + cyapa_remove_power_wakeup_group, cyapa); + if (error) { + cyapa_remove_power_wakeup_group(cyapa); + dev_err(dev, "failed to add power cleanup action: %d\n", + error); + return error; + } + } + + return 0; +} +#else +static inline int cyapa_prepare_wakeup_controls(struct cyapa *cyapa) +{ + return 0; +} +#endif /* CONFIG_PM_SLEEP */ + +#ifdef CONFIG_PM +static ssize_t cyapa_show_rt_suspend_scanrate(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct cyapa *cyapa = dev_get_drvdata(dev); + u8 pwr_cmd; + u16 sleep_time; + int error; + + error = mutex_lock_interruptible(&cyapa->state_sync_lock); + if (error) + return error; + + pwr_cmd = cyapa->runtime_suspend_power_mode; + sleep_time = cyapa->runtime_suspend_sleep_time; + + mutex_unlock(&cyapa->state_sync_lock); + + return scnprintf(buf, PAGE_SIZE, "%u\n", + cyapa->gen == CYAPA_GEN3 ? + cyapa_pwr_cmd_to_sleep_time(pwr_cmd) : + sleep_time); +} + +static ssize_t cyapa_update_rt_suspend_scanrate(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct cyapa *cyapa = dev_get_drvdata(dev); + u16 time; + int error; + + if (buf == NULL || count == 0 || kstrtou16(buf, 10, &time)) { + dev_err(dev, "invalid runtime suspend scanrate ms parameter\n"); + return -EINVAL; + } + + /* + * When the suspend scanrate is changed, pm_runtime_get to resume + * a potentially suspended device, update to the new pwr_cmd + * and then pm_runtime_put to suspend into the new power mode. + */ + pm_runtime_get_sync(dev); + + error = mutex_lock_interruptible(&cyapa->state_sync_lock); + if (error) + return error; + + cyapa->runtime_suspend_sleep_time = max_t(u16, time, 1000); + cyapa->runtime_suspend_power_mode = + cyapa_sleep_time_to_pwr_cmd(cyapa->runtime_suspend_sleep_time); + + mutex_unlock(&cyapa->state_sync_lock); + + pm_runtime_put_sync_autosuspend(dev); + + return count; +} + +static DEVICE_ATTR(runtime_suspend_scanrate_ms, S_IRUGO|S_IWUSR, + cyapa_show_rt_suspend_scanrate, + cyapa_update_rt_suspend_scanrate); + +static struct attribute *cyapa_power_runtime_entries[] = { + &dev_attr_runtime_suspend_scanrate_ms.attr, + NULL, +}; + +static const struct attribute_group cyapa_power_runtime_group = { + .name = power_group_name, + .attrs = cyapa_power_runtime_entries, +}; + +static void cyapa_remove_power_runtime_group(void *data) +{ + struct cyapa *cyapa = data; + + sysfs_unmerge_group(&cyapa->client->dev.kobj, + &cyapa_power_runtime_group); +} + +static int cyapa_start_runtime(struct cyapa *cyapa) +{ + struct device *dev = &cyapa->client->dev; int error; - error = cyapa_set_power_mode(cyapa, PWR_MODE_FULL_ACTIVE); + cyapa->runtime_suspend_power_mode = PWR_MODE_IDLE; + cyapa->runtime_suspend_sleep_time = + cyapa_pwr_cmd_to_sleep_time(cyapa->runtime_suspend_power_mode); + + error = sysfs_merge_group(&dev->kobj, &cyapa_power_runtime_group); if (error) { - dev_err(&client->dev, "set active power failed: %d\n", error); + dev_err(dev, + "failed to create power runtime group: %d\n", error); return error; } - enable_irq(client->irq); + error = devm_add_action(dev, cyapa_remove_power_runtime_group, cyapa); + if (error) { + cyapa_remove_power_runtime_group(cyapa); + dev_err(dev, + "failed to add power runtime cleanup action: %d\n", + error); + return error; + } + + /* runtime is enabled until device is operational and opened. */ + pm_runtime_set_suspended(dev); + pm_runtime_use_autosuspend(dev); + pm_runtime_set_autosuspend_delay(dev, AUTOSUSPEND_DELAY); + return 0; } +#else +static inline int cyapa_start_runtime(struct cyapa *cyapa) +{ + return 0; +} +#endif /* CONFIG_PM */ -static void cyapa_close(struct input_dev *input) +static ssize_t cyapa_show_fm_ver(struct device *dev, + struct device_attribute *attr, char *buf) { - struct cyapa *cyapa = input_get_drvdata(input); + int error; + struct cyapa *cyapa = dev_get_drvdata(dev); - disable_irq(cyapa->client->irq); - cyapa_set_power_mode(cyapa, PWR_MODE_OFF); + error = mutex_lock_interruptible(&cyapa->state_sync_lock); + if (error) + return error; + error = scnprintf(buf, PAGE_SIZE, "%d.%d\n", cyapa->fw_maj_ver, + cyapa->fw_min_ver); + mutex_unlock(&cyapa->state_sync_lock); + return error; } -static int cyapa_create_input_dev(struct cyapa *cyapa) +static ssize_t cyapa_show_product_id(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct cyapa *cyapa = dev_get_drvdata(dev); + int size; + int error; + + error = mutex_lock_interruptible(&cyapa->state_sync_lock); + if (error) + return error; + size = scnprintf(buf, PAGE_SIZE, "%s\n", cyapa->product_id); + mutex_unlock(&cyapa->state_sync_lock); + return size; +} + +static int cyapa_firmware(struct cyapa *cyapa, const char *fw_name) { struct device *dev = &cyapa->client->dev; - struct input_dev *input; + const struct firmware *fw; int error; - if (!cyapa->physical_size_x || !cyapa->physical_size_y) - return -EINVAL; + error = request_firmware(&fw, fw_name, dev); + if (error) { + dev_err(dev, "Could not load firmware from %s: %d\n", + fw_name, error); + return error; + } - input = devm_input_allocate_device(dev); - if (!input) { - dev_err(dev, "failed to allocate memory for input device.\n"); - return -ENOMEM; + error = cyapa->ops->check_fw(cyapa, fw); + if (error) { + dev_err(dev, "Invalid CYAPA firmware image: %s\n", + fw_name); + goto done; } - input->name = CYAPA_NAME; - input->phys = cyapa->phys; - input->id.bustype = BUS_I2C; - input->id.version = 1; - input->id.product = 0; /* Means any product in eventcomm. */ - input->dev.parent = &cyapa->client->dev; + /* + * Resume the potentially suspended device because doing FW + * update on a device not in the FULL mode has a chance to + * fail. + */ + pm_runtime_get_sync(dev); - input->open = cyapa_open; - input->close = cyapa_close; + /* Require IRQ support for firmware update commands. */ + cyapa_enable_irq_for_cmd(cyapa); - input_set_drvdata(input, cyapa); + error = cyapa->ops->bl_enter(cyapa); + if (error) { + dev_err(dev, "bl_enter failed, %d\n", error); + goto err_detect; + } - __set_bit(EV_ABS, input->evbit); + error = cyapa->ops->bl_activate(cyapa); + if (error) { + dev_err(dev, "bl_activate failed, %d\n", error); + goto err_detect; + } - /* Finger position */ - input_set_abs_params(input, ABS_MT_POSITION_X, 0, cyapa->max_abs_x, 0, - 0); - input_set_abs_params(input, ABS_MT_POSITION_Y, 0, cyapa->max_abs_y, 0, - 0); - input_set_abs_params(input, ABS_MT_PRESSURE, 0, 255, 0, 0); + error = cyapa->ops->bl_initiate(cyapa, fw); + if (error) { + dev_err(dev, "bl_initiate failed, %d\n", error); + goto err_detect; + } - input_abs_set_res(input, ABS_MT_POSITION_X, - cyapa->max_abs_x / cyapa->physical_size_x); - input_abs_set_res(input, ABS_MT_POSITION_Y, - cyapa->max_abs_y / cyapa->physical_size_y); + error = cyapa->ops->update_fw(cyapa, fw); + if (error) { + dev_err(dev, "update_fw failed, %d\n", error); + goto err_detect; + } - if (cyapa->btn_capability & CAPABILITY_LEFT_BTN_MASK) - __set_bit(BTN_LEFT, input->keybit); - if (cyapa->btn_capability & CAPABILITY_MIDDLE_BTN_MASK) - __set_bit(BTN_MIDDLE, input->keybit); - if (cyapa->btn_capability & CAPABILITY_RIGHT_BTN_MASK) - __set_bit(BTN_RIGHT, input->keybit); +err_detect: + cyapa_disable_irq_for_cmd(cyapa); + pm_runtime_put_noidle(dev); - if (cyapa->btn_capability == CAPABILITY_LEFT_BTN_MASK) - __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); +done: + release_firmware(fw); + return error; +} - /* Handle pointer emulation and unused slots in core */ - error = input_mt_init_slots(input, CYAPA_MAX_MT_SLOTS, - INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED); +static ssize_t cyapa_update_fw_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct cyapa *cyapa = dev_get_drvdata(dev); + char fw_name[NAME_MAX]; + int ret, error; + + if (count >= NAME_MAX) { + dev_err(dev, "File name too long\n"); + return -EINVAL; + } + + memcpy(fw_name, buf, count); + if (fw_name[count - 1] == '\n') + fw_name[count - 1] = '\0'; + else + fw_name[count] = '\0'; + + if (cyapa->input) { + /* + * Force the input device to be registered after the firmware + * image is updated, so if the corresponding parameters updated + * in the new firmware image can taken effect immediately. + */ + input_unregister_device(cyapa->input); + cyapa->input = NULL; + } + + error = mutex_lock_interruptible(&cyapa->state_sync_lock); if (error) { - dev_err(dev, "failed to initialize MT slots: %d\n", error); + /* + * Whatever, do reinitialize to try to recover TP state to + * previous state just as it entered fw update entrance. + */ + cyapa_reinitialize(cyapa); return error; } - cyapa->input = input; - return 0; + error = cyapa_firmware(cyapa, fw_name); + if (error) + dev_err(dev, "firmware update failed: %d\n", error); + else + dev_dbg(dev, "firmware update successfully done.\n"); + + /* + * Redetect trackpad device states because firmware update process + * will reset trackpad device into bootloader mode. + */ + ret = cyapa_reinitialize(cyapa); + if (ret) { + dev_err(dev, "failed to redetect after updated: %d\n", ret); + error = error ? error : ret; + } + + mutex_unlock(&cyapa->state_sync_lock); + + return error ? error : count; +} + +static ssize_t cyapa_calibrate_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct cyapa *cyapa = dev_get_drvdata(dev); + int error; + + error = mutex_lock_interruptible(&cyapa->state_sync_lock); + if (error) + return error; + + if (cyapa->operational) { + cyapa_enable_irq_for_cmd(cyapa); + error = cyapa->ops->calibrate_store(dev, attr, buf, count); + cyapa_disable_irq_for_cmd(cyapa); + } else { + error = -EBUSY; /* Still running in bootloader mode. */ + } + + mutex_unlock(&cyapa->state_sync_lock); + return error < 0 ? error : count; +} + +static ssize_t cyapa_show_baseline(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct cyapa *cyapa = dev_get_drvdata(dev); + ssize_t error; + + error = mutex_lock_interruptible(&cyapa->state_sync_lock); + if (error) + return error; + + if (cyapa->operational) { + cyapa_enable_irq_for_cmd(cyapa); + error = cyapa->ops->show_baseline(dev, attr, buf); + cyapa_disable_irq_for_cmd(cyapa); + } else { + error = -EBUSY; /* Still running in bootloader mode. */ + } + + mutex_unlock(&cyapa->state_sync_lock); + return error; +} + +static char *cyapa_state_to_string(struct cyapa *cyapa) +{ + switch (cyapa->state) { + case CYAPA_STATE_BL_BUSY: + return "bootloader busy"; + case CYAPA_STATE_BL_IDLE: + return "bootloader idle"; + case CYAPA_STATE_BL_ACTIVE: + return "bootloader active"; + case CYAPA_STATE_GEN5_BL: + return "bootloader"; + case CYAPA_STATE_OP: + case CYAPA_STATE_GEN5_APP: + return "operational"; /* Normal valid state. */ + default: + return "invalid mode"; + } +} + +static ssize_t cyapa_show_mode(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct cyapa *cyapa = dev_get_drvdata(dev); + int size; + int error; + + error = mutex_lock_interruptible(&cyapa->state_sync_lock); + if (error) + return error; + + size = scnprintf(buf, PAGE_SIZE, "gen%d %s\n", + cyapa->gen, cyapa_state_to_string(cyapa)); + + mutex_unlock(&cyapa->state_sync_lock); + return size; +} + +static DEVICE_ATTR(firmware_version, S_IRUGO, cyapa_show_fm_ver, NULL); +static DEVICE_ATTR(product_id, S_IRUGO, cyapa_show_product_id, NULL); +static DEVICE_ATTR(update_fw, S_IWUSR, NULL, cyapa_update_fw_store); +static DEVICE_ATTR(baseline, S_IRUGO, cyapa_show_baseline, NULL); +static DEVICE_ATTR(calibrate, S_IWUSR, NULL, cyapa_calibrate_store); +static DEVICE_ATTR(mode, S_IRUGO, cyapa_show_mode, NULL); + +static struct attribute *cyapa_sysfs_entries[] = { + &dev_attr_firmware_version.attr, + &dev_attr_product_id.attr, + &dev_attr_update_fw.attr, + &dev_attr_baseline.attr, + &dev_attr_calibrate.attr, + &dev_attr_mode.attr, + NULL, +}; + +static const struct attribute_group cyapa_sysfs_group = { + .attrs = cyapa_sysfs_entries, +}; + +static void cyapa_remove_sysfs_group(void *data) +{ + struct cyapa *cyapa = data; + + sysfs_remove_group(&cyapa->client->dev.kobj, &cyapa_sysfs_group); } static int cyapa_probe(struct i2c_client *client, @@ -848,6 +1181,7 @@ static int cyapa_probe(struct i2c_client *client, struct device *dev = &client->dev; struct cyapa *cyapa; u8 adapter_func; + union i2c_smbus_data dummy; int error; adapter_func = cyapa_check_adapter_functionality(client); @@ -856,38 +1190,54 @@ static int cyapa_probe(struct i2c_client *client, return -EIO; } + /* Make sure there is something at this address */ + if (i2c_smbus_xfer(client->adapter, client->addr, 0, + I2C_SMBUS_READ, 0, I2C_SMBUS_BYTE, &dummy) < 0) + return -ENODEV; + cyapa = devm_kzalloc(dev, sizeof(struct cyapa), GFP_KERNEL); if (!cyapa) return -ENOMEM; - cyapa->gen = CYAPA_GEN3; + /* i2c isn't supported, use smbus */ + if (adapter_func == CYAPA_ADAPTER_FUNC_SMBUS) + cyapa->smbus = true; + cyapa->client = client; i2c_set_clientdata(client, cyapa); sprintf(cyapa->phys, "i2c-%d-%04x/input0", client->adapter->nr, client->addr); - /* i2c isn't supported, use smbus */ - if (adapter_func == CYAPA_ADAPTER_FUNC_SMBUS) - cyapa->smbus = true; + error = cyapa_initialize(cyapa); + if (error) { + dev_err(dev, "failed to detect and initialize tp device.\n"); + return error; + } - cyapa->state = CYAPA_STATE_NO_DEVICE; + error = sysfs_create_group(&client->dev.kobj, &cyapa_sysfs_group); + if (error) { + dev_err(dev, "failed to create sysfs entries: %d\n", error); + return error; + } - error = cyapa_check_is_operational(cyapa); + error = devm_add_action(dev, cyapa_remove_sysfs_group, cyapa); if (error) { - dev_err(dev, "device not operational, %d\n", error); + cyapa_remove_sysfs_group(cyapa); + dev_err(dev, "failed to add sysfs cleanup action: %d\n", error); return error; } - /* Power down the device until we need it */ - error = cyapa_set_power_mode(cyapa, PWR_MODE_OFF); + error = cyapa_prepare_wakeup_controls(cyapa); if (error) { - dev_err(dev, "failed to quiesce the device: %d\n", error); + dev_err(dev, "failed to prepare wakeup controls: %d\n", error); return error; } - error = cyapa_create_input_dev(cyapa); - if (error) + error = cyapa_start_runtime(cyapa); + if (error) { + dev_err(dev, "failed to start pm_runtime: %d\n", error); return error; + } error = devm_request_threaded_irq(dev, client->irq, NULL, cyapa_irq, @@ -901,11 +1251,18 @@ static int cyapa_probe(struct i2c_client *client, /* Disable IRQ until the device is opened */ disable_irq(client->irq); - /* Register the device in input subsystem */ - error = input_register_device(cyapa->input); - if (error) { - dev_err(dev, "failed to register input device: %d\n", error); - return error; + /* + * Register the device in the input subsystem when it's operational. + * Otherwise, keep in this driver, so it can be be recovered or updated + * through the sysfs mode and update_fw interfaces by user or apps. + */ + if (cyapa->operational) { + error = cyapa_create_input_dev(cyapa); + if (error) { + dev_err(dev, "create input_dev instance failed: %d\n", + error); + return error; + } } return 0; @@ -915,32 +1272,40 @@ static int __maybe_unused cyapa_suspend(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct cyapa *cyapa = i2c_get_clientdata(client); - struct input_dev *input = cyapa->input; u8 power_mode; int error; - error = mutex_lock_interruptible(&input->mutex); + error = mutex_lock_interruptible(&cyapa->state_sync_lock); if (error) return error; + /* + * Runtime PM is enable only when device is in operational mode and + * users in use, so need check it before disable it to + * avoid unbalance warning. + */ + if (pm_runtime_enabled(dev)) + pm_runtime_disable(dev); disable_irq(client->irq); /* * Set trackpad device to idle mode if wakeup is allowed, * otherwise turn off. */ - power_mode = device_may_wakeup(dev) ? PWR_MODE_IDLE - : PWR_MODE_OFF; - error = cyapa_set_power_mode(cyapa, power_mode); - if (error) - dev_err(dev, "resume: set power mode to %d failed: %d\n", - power_mode, error); + if (cyapa->operational) { + power_mode = device_may_wakeup(dev) ? cyapa->suspend_power_mode + : PWR_MODE_OFF; + error = cyapa->ops->set_power_mode(cyapa, power_mode, + cyapa->suspend_sleep_time); + if (error) + dev_err(dev, "suspend set power mode failed: %d\n", + error); + } if (device_may_wakeup(dev)) cyapa->irq_wake = (enable_irq_wake(client->irq) == 0); - mutex_unlock(&input->mutex); - + mutex_unlock(&cyapa->state_sync_lock); return 0; } @@ -948,29 +1313,56 @@ static int __maybe_unused cyapa_resume(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct cyapa *cyapa = i2c_get_clientdata(client); - struct input_dev *input = cyapa->input; - u8 power_mode; int error; - mutex_lock(&input->mutex); + mutex_lock(&cyapa->state_sync_lock); - if (device_may_wakeup(dev) && cyapa->irq_wake) + if (device_may_wakeup(dev) && cyapa->irq_wake) { disable_irq_wake(client->irq); + cyapa->irq_wake = false; + } - power_mode = input->users ? PWR_MODE_FULL_ACTIVE : PWR_MODE_OFF; - error = cyapa_set_power_mode(cyapa, PWR_MODE_FULL_ACTIVE); + /* Update device states and runtime PM states. */ + error = cyapa_reinitialize(cyapa); if (error) - dev_warn(dev, "resume: set power mode to %d failed: %d\n", - power_mode, error); + dev_warn(dev, "failed to reinitialize TP device: %d\n", error); enable_irq(client->irq); - mutex_unlock(&input->mutex); + mutex_unlock(&cyapa->state_sync_lock); + return 0; +} + +static int __maybe_unused cyapa_runtime_suspend(struct device *dev) +{ + struct cyapa *cyapa = dev_get_drvdata(dev); + int error; + + error = cyapa->ops->set_power_mode(cyapa, + cyapa->runtime_suspend_power_mode, + cyapa->runtime_suspend_sleep_time); + if (error) + dev_warn(dev, "runtime suspend failed: %d\n", error); + + return 0; +} + +static int __maybe_unused cyapa_runtime_resume(struct device *dev) +{ + struct cyapa *cyapa = dev_get_drvdata(dev); + int error; + + error = cyapa->ops->set_power_mode(cyapa, PWR_MODE_FULL_ACTIVE, 0); + if (error) + dev_warn(dev, "runtime resume failed: %d\n", error); return 0; } -static SIMPLE_DEV_PM_OPS(cyapa_pm_ops, cyapa_suspend, cyapa_resume); +static const struct dev_pm_ops cyapa_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(cyapa_suspend, cyapa_resume) + SET_RUNTIME_PM_OPS(cyapa_runtime_suspend, cyapa_runtime_resume, NULL) +}; static const struct i2c_device_id cyapa_id_table[] = { { "cyapa", 0 }, @@ -978,11 +1370,21 @@ static const struct i2c_device_id cyapa_id_table[] = { }; MODULE_DEVICE_TABLE(i2c, cyapa_id_table); +#ifdef CONFIG_ACPI +static const struct acpi_device_id cyapa_acpi_id[] = { + { "CYAP0000", 0 }, /* Gen3 trackpad with 0x67 I2C address. */ + { "CYAP0001", 0 }, /* Gen5 trackpad with 0x24 I2C address. */ + { } +}; +MODULE_DEVICE_TABLE(acpi, cyapa_acpi_id); +#endif + static struct i2c_driver cyapa_driver = { .driver = { .name = "cyapa", .owner = THIS_MODULE, .pm = &cyapa_pm_ops, + .acpi_match_table = ACPI_PTR(cyapa_acpi_id), }, .probe = cyapa_probe, diff --git a/drivers/input/mouse/cyapa.h b/drivers/input/mouse/cyapa.h new file mode 100644 index 000000000000..adc9ed5dcb0e --- /dev/null +++ b/drivers/input/mouse/cyapa.h @@ -0,0 +1,301 @@ +/* + * Cypress APA trackpad with I2C interface + * + * Author: Dudley Du <dudl@cypress.com> + * + * Copyright (C) 2014 Cypress Semiconductor, Inc. + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive for + * more details. + */ + +#ifndef _CYAPA_H +#define _CYAPA_H + +#include <linux/firmware.h> + +/* APA trackpad firmware generation number. */ +#define CYAPA_GEN_UNKNOWN 0x00 /* unknown protocol. */ +#define CYAPA_GEN3 0x03 /* support MT-protocol B with tracking ID. */ +#define CYAPA_GEN5 0x05 /* support TrueTouch GEN5 trackpad device. */ + +#define CYAPA_NAME "Cypress APA Trackpad (cyapa)" + +/* + * Macros for SMBus communication + */ +#define SMBUS_READ 0x01 +#define SMBUS_WRITE 0x00 +#define SMBUS_ENCODE_IDX(cmd, idx) ((cmd) | (((idx) & 0x03) << 1)) +#define SMBUS_ENCODE_RW(cmd, rw) ((cmd) | ((rw) & 0x01)) +#define SMBUS_BYTE_BLOCK_CMD_MASK 0x80 +#define SMBUS_GROUP_BLOCK_CMD_MASK 0x40 + +/* Commands for read/write registers of Cypress trackpad */ +#define CYAPA_CMD_SOFT_RESET 0x00 +#define CYAPA_CMD_POWER_MODE 0x01 +#define CYAPA_CMD_DEV_STATUS 0x02 +#define CYAPA_CMD_GROUP_DATA 0x03 +#define CYAPA_CMD_GROUP_CMD 0x04 +#define CYAPA_CMD_GROUP_QUERY 0x05 +#define CYAPA_CMD_BL_STATUS 0x06 +#define CYAPA_CMD_BL_HEAD 0x07 +#define CYAPA_CMD_BL_CMD 0x08 +#define CYAPA_CMD_BL_DATA 0x09 +#define CYAPA_CMD_BL_ALL 0x0a +#define CYAPA_CMD_BLK_PRODUCT_ID 0x0b +#define CYAPA_CMD_BLK_HEAD 0x0c +#define CYAPA_CMD_MAX_BASELINE 0x0d +#define CYAPA_CMD_MIN_BASELINE 0x0e + +#define BL_HEAD_OFFSET 0x00 +#define BL_DATA_OFFSET 0x10 + +#define BL_STATUS_SIZE 3 /* Length of gen3 bootloader status registers */ +#define CYAPA_REG_MAP_SIZE 256 + +/* + * Gen3 Operational Device Status Register + * + * bit 7: Valid interrupt source + * bit 6 - 4: Reserved + * bit 3 - 2: Power status + * bit 1 - 0: Device status + */ +#define REG_OP_STATUS 0x00 +#define OP_STATUS_SRC 0x80 +#define OP_STATUS_POWER 0x0c +#define OP_STATUS_DEV 0x03 +#define OP_STATUS_MASK (OP_STATUS_SRC | OP_STATUS_POWER | OP_STATUS_DEV) + +/* + * Operational Finger Count/Button Flags Register + * + * bit 7 - 4: Number of touched finger + * bit 3: Valid data + * bit 2: Middle Physical Button + * bit 1: Right Physical Button + * bit 0: Left physical Button + */ +#define REG_OP_DATA1 0x01 +#define OP_DATA_VALID 0x08 +#define OP_DATA_MIDDLE_BTN 0x04 +#define OP_DATA_RIGHT_BTN 0x02 +#define OP_DATA_LEFT_BTN 0x01 +#define OP_DATA_BTN_MASK (OP_DATA_MIDDLE_BTN | OP_DATA_RIGHT_BTN | \ + OP_DATA_LEFT_BTN) + +/* + * Write-only command file register used to issue commands and + * parameters to the bootloader. + * The default value read from it is always 0x00. + */ +#define REG_BL_FILE 0x00 +#define BL_FILE 0x00 + +/* + * Bootloader Status Register + * + * bit 7: Busy + * bit 6 - 5: Reserved + * bit 4: Bootloader running + * bit 3 - 2: Reserved + * bit 1: Watchdog Reset + * bit 0: Checksum valid + */ +#define REG_BL_STATUS 0x01 +#define BL_STATUS_REV_6_5 0x60 +#define BL_STATUS_BUSY 0x80 +#define BL_STATUS_RUNNING 0x10 +#define BL_STATUS_REV_3_2 0x0c +#define BL_STATUS_WATCHDOG 0x02 +#define BL_STATUS_CSUM_VALID 0x01 +#define BL_STATUS_REV_MASK (BL_STATUS_WATCHDOG | BL_STATUS_REV_3_2 | \ + BL_STATUS_REV_6_5) + +/* + * Bootloader Error Register + * + * bit 7: Invalid + * bit 6: Invalid security key + * bit 5: Bootloading + * bit 4: Command checksum + * bit 3: Flash protection error + * bit 2: Flash checksum error + * bit 1 - 0: Reserved + */ +#define REG_BL_ERROR 0x02 +#define BL_ERROR_INVALID 0x80 +#define BL_ERROR_INVALID_KEY 0x40 +#define BL_ERROR_BOOTLOADING 0x20 +#define BL_ERROR_CMD_CSUM 0x10 +#define BL_ERROR_FLASH_PROT 0x08 +#define BL_ERROR_FLASH_CSUM 0x04 +#define BL_ERROR_RESERVED 0x03 +#define BL_ERROR_NO_ERR_IDLE 0x00 +#define BL_ERROR_NO_ERR_ACTIVE (BL_ERROR_BOOTLOADING) + +#define CAPABILITY_BTN_SHIFT 3 +#define CAPABILITY_LEFT_BTN_MASK (0x01 << 3) +#define CAPABILITY_RIGHT_BTN_MASK (0x01 << 4) +#define CAPABILITY_MIDDLE_BTN_MASK (0x01 << 5) +#define CAPABILITY_BTN_MASK (CAPABILITY_LEFT_BTN_MASK | \ + CAPABILITY_RIGHT_BTN_MASK | \ + CAPABILITY_MIDDLE_BTN_MASK) + +#define PWR_MODE_MASK 0xfc +#define PWR_MODE_FULL_ACTIVE (0x3f << 2) +#define PWR_MODE_IDLE (0x03 << 2) /* Default rt suspend scanrate: 30ms */ +#define PWR_MODE_SLEEP (0x05 << 2) /* Default suspend scanrate: 50ms */ +#define PWR_MODE_BTN_ONLY (0x01 << 2) +#define PWR_MODE_OFF (0x00 << 2) + +#define PWR_STATUS_MASK 0x0c +#define PWR_STATUS_ACTIVE (0x03 << 2) +#define PWR_STATUS_IDLE (0x02 << 2) +#define PWR_STATUS_BTN_ONLY (0x01 << 2) +#define PWR_STATUS_OFF (0x00 << 2) + +#define AUTOSUSPEND_DELAY 2000 /* unit : ms */ + +#define UNINIT_SLEEP_TIME 0xFFFF +#define UNINIT_PWR_MODE 0xFF + +#define BTN_ONLY_MODE_NAME "buttononly" +#define OFF_MODE_NAME "off" + +/* The touch.id is used as the MT slot id, thus max MT slot is 15 */ +#define CYAPA_MAX_MT_SLOTS 15 + +struct cyapa; + +typedef bool (*cb_sort)(struct cyapa *, u8 *, int); + +struct cyapa_dev_ops { + int (*check_fw)(struct cyapa *, const struct firmware *); + int (*bl_enter)(struct cyapa *); + int (*bl_activate)(struct cyapa *); + int (*bl_initiate)(struct cyapa *, const struct firmware *); + int (*update_fw)(struct cyapa *, const struct firmware *); + int (*bl_deactivate)(struct cyapa *); + + ssize_t (*show_baseline)(struct device *, + struct device_attribute *, char *); + ssize_t (*calibrate_store)(struct device *, + struct device_attribute *, const char *, size_t); + + int (*initialize)(struct cyapa *cyapa); + + int (*state_parse)(struct cyapa *cyapa, u8 *reg_status, int len); + int (*operational_check)(struct cyapa *cyapa); + + int (*irq_handler)(struct cyapa *); + bool (*irq_cmd_handler)(struct cyapa *); + int (*sort_empty_output_data)(struct cyapa *, + u8 *, int *, cb_sort); + + int (*set_power_mode)(struct cyapa *, u8, u16); +}; + +struct cyapa_gen5_cmd_states { + struct mutex cmd_lock; + struct completion cmd_ready; + atomic_t cmd_issued; + u8 in_progress_cmd; + bool is_irq_mode; + + cb_sort resp_sort_func; + u8 *resp_data; + int *resp_len; + + u8 irq_cmd_buf[CYAPA_REG_MAP_SIZE]; + u8 empty_buf[CYAPA_REG_MAP_SIZE]; +}; + +union cyapa_cmd_states { + struct cyapa_gen5_cmd_states gen5; +}; + +enum cyapa_state { + CYAPA_STATE_NO_DEVICE, + CYAPA_STATE_BL_BUSY, + CYAPA_STATE_BL_IDLE, + CYAPA_STATE_BL_ACTIVE, + CYAPA_STATE_OP, + CYAPA_STATE_GEN5_BL, + CYAPA_STATE_GEN5_APP, +}; + +/* The main device structure */ +struct cyapa { + enum cyapa_state state; + u8 status[BL_STATUS_SIZE]; + bool operational; /* true: ready for data reporting; false: not. */ + + struct i2c_client *client; + struct input_dev *input; + char phys[32]; /* Device physical location */ + bool irq_wake; /* Irq wake is enabled */ + bool smbus; + + /* power mode settings */ + u8 suspend_power_mode; + u16 suspend_sleep_time; + u8 runtime_suspend_power_mode; + u16 runtime_suspend_sleep_time; + u8 dev_pwr_mode; + u16 dev_sleep_time; + + /* Read from query data region. */ + char product_id[16]; + u8 fw_maj_ver; /* Firmware major version. */ + u8 fw_min_ver; /* Firmware minor version. */ + u8 btn_capability; + u8 gen; + int max_abs_x; + int max_abs_y; + int physical_size_x; + int physical_size_y; + + /* Used in ttsp and truetouch based trackpad devices. */ + u8 x_origin; /* X Axis Origin: 0 = left side; 1 = rigth side. */ + u8 y_origin; /* Y Axis Origin: 0 = top; 1 = bottom. */ + int electrodes_x; /* Number of electrodes on the X Axis*/ + int electrodes_y; /* Number of electrodes on the Y Axis*/ + int electrodes_rx; /* Number of Rx electrodes */ + int aligned_electrodes_rx; /* 4 aligned */ + int max_z; + + /* + * Used to synchronize the access or update the device state. + * And since update firmware and read firmware image process will take + * quite long time, maybe more than 10 seconds, so use mutex_lock + * to sync and wait other interface and detecting are done or ready. + */ + struct mutex state_sync_lock; + + const struct cyapa_dev_ops *ops; + + union cyapa_cmd_states cmd_states; +}; + + +ssize_t cyapa_i2c_reg_read_block(struct cyapa *cyapa, u8 reg, size_t len, + u8 *values); +ssize_t cyapa_smbus_read_block(struct cyapa *cyapa, u8 cmd, size_t len, + u8 *values); + +ssize_t cyapa_read_block(struct cyapa *cyapa, u8 cmd_idx, u8 *values); + +int cyapa_poll_state(struct cyapa *cyapa, unsigned int timeout); + +u8 cyapa_sleep_time_to_pwr_cmd(u16 sleep_time); +u16 cyapa_pwr_cmd_to_sleep_time(u8 pwr_mode); + + +extern const char product_id[]; +extern const struct cyapa_dev_ops cyapa_gen3_ops; +extern const struct cyapa_dev_ops cyapa_gen5_ops; + +#endif diff --git a/drivers/input/mouse/cyapa_gen3.c b/drivers/input/mouse/cyapa_gen3.c new file mode 100644 index 000000000000..77e9d70a986b --- /dev/null +++ b/drivers/input/mouse/cyapa_gen3.c @@ -0,0 +1,1247 @@ +/* + * Cypress APA trackpad with I2C interface + * + * Author: Dudley Du <dudl@cypress.com> + * Further cleanup and restructuring by: + * Daniel Kurtz <djkurtz@chromium.org> + * Benson Leung <bleung@chromium.org> + * + * Copyright (C) 2011-2014 Cypress Semiconductor, Inc. + * Copyright (C) 2011-2012 Google, Inc. + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive for + * more details. + */ + +#include <linux/delay.h> +#include <linux/i2c.h> +#include <linux/input.h> +#include <linux/input/mt.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/unaligned/access_ok.h> +#include "cyapa.h" + + +#define GEN3_MAX_FINGERS 5 +#define GEN3_FINGER_NUM(x) (((x) >> 4) & 0x07) + +#define BLK_HEAD_BYTES 32 + +/* Macro for register map group offset. */ +#define PRODUCT_ID_SIZE 16 +#define QUERY_DATA_SIZE 27 +#define REG_PROTOCOL_GEN_QUERY_OFFSET 20 + +#define REG_OFFSET_DATA_BASE 0x0000 +#define REG_OFFSET_COMMAND_BASE 0x0028 +#define REG_OFFSET_QUERY_BASE 0x002a + +#define CYAPA_OFFSET_SOFT_RESET REG_OFFSET_COMMAND_BASE +#define OP_RECALIBRATION_MASK 0x80 +#define OP_REPORT_BASELINE_MASK 0x40 +#define REG_OFFSET_MAX_BASELINE 0x0026 +#define REG_OFFSET_MIN_BASELINE 0x0027 + +#define REG_OFFSET_POWER_MODE (REG_OFFSET_COMMAND_BASE + 1) +#define SET_POWER_MODE_DELAY 10000 /* Unit: us */ +#define SET_POWER_MODE_TRIES 5 + +#define GEN3_BL_CMD_CHECKSUM_SEED 0xff +#define GEN3_BL_CMD_INITIATE_BL 0x38 +#define GEN3_BL_CMD_WRITE_BLOCK 0x39 +#define GEN3_BL_CMD_VERIFY_BLOCK 0x3a +#define GEN3_BL_CMD_TERMINATE_BL 0x3b +#define GEN3_BL_CMD_LAUNCH_APP 0xa5 + +/* + * CYAPA trackpad device states. + * Used in register 0x00, bit1-0, DeviceStatus field. + * Other values indicate device is in an abnormal state and must be reset. + */ +#define CYAPA_DEV_NORMAL 0x03 +#define CYAPA_DEV_BUSY 0x01 + +#define CYAPA_FW_BLOCK_SIZE 64 +#define CYAPA_FW_READ_SIZE 16 +#define CYAPA_FW_HDR_START 0x0780 +#define CYAPA_FW_HDR_BLOCK_COUNT 2 +#define CYAPA_FW_HDR_BLOCK_START (CYAPA_FW_HDR_START / CYAPA_FW_BLOCK_SIZE) +#define CYAPA_FW_HDR_SIZE (CYAPA_FW_HDR_BLOCK_COUNT * \ + CYAPA_FW_BLOCK_SIZE) +#define CYAPA_FW_DATA_START 0x0800 +#define CYAPA_FW_DATA_BLOCK_COUNT 480 +#define CYAPA_FW_DATA_BLOCK_START (CYAPA_FW_DATA_START / CYAPA_FW_BLOCK_SIZE) +#define CYAPA_FW_DATA_SIZE (CYAPA_FW_DATA_BLOCK_COUNT * \ + CYAPA_FW_BLOCK_SIZE) +#define CYAPA_FW_SIZE (CYAPA_FW_HDR_SIZE + CYAPA_FW_DATA_SIZE) +#define CYAPA_CMD_LEN 16 + +#define GEN3_BL_IDLE_FW_MAJ_VER_OFFSET 0x0b +#define GEN3_BL_IDLE_FW_MIN_VER_OFFSET (GEN3_BL_IDLE_FW_MAJ_VER_OFFSET + 1) + + +struct cyapa_touch { + /* + * high bits or x/y position value + * bit 7 - 4: high 4 bits of x position value + * bit 3 - 0: high 4 bits of y position value + */ + u8 xy_hi; + u8 x_lo; /* low 8 bits of x position value. */ + u8 y_lo; /* low 8 bits of y position value. */ + u8 pressure; + /* id range is 1 - 15. It is incremented with every new touch. */ + u8 id; +} __packed; + +struct cyapa_reg_data { + /* + * bit 0 - 1: device status + * bit 3 - 2: power mode + * bit 6 - 4: reserved + * bit 7: interrupt valid bit + */ + u8 device_status; + /* + * bit 7 - 4: number of fingers currently touching pad + * bit 3: valid data check bit + * bit 2: middle mechanism button state if exists + * bit 1: right mechanism button state if exists + * bit 0: left mechanism button state if exists + */ + u8 finger_btn; + /* CYAPA reports up to 5 touches per packet. */ + struct cyapa_touch touches[5]; +} __packed; + +struct gen3_write_block_cmd { + u8 checksum_seed; /* Always be 0xff */ + u8 cmd_code; /* command code: 0x39 */ + u8 key[8]; /* 8-byte security key */ + __be16 block_num; + u8 block_data[CYAPA_FW_BLOCK_SIZE]; + u8 block_checksum; /* Calculated using bytes 12 - 75 */ + u8 cmd_checksum; /* Calculated using bytes 0-76 */ +} __packed; + +static const u8 security_key[] = { + 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 }; +static const u8 bl_activate[] = { 0x00, 0xff, 0x38, 0x00, 0x01, 0x02, 0x03, + 0x04, 0x05, 0x06, 0x07 }; +static const u8 bl_deactivate[] = { 0x00, 0xff, 0x3b, 0x00, 0x01, 0x02, 0x03, + 0x04, 0x05, 0x06, 0x07 }; +static const u8 bl_exit[] = { 0x00, 0xff, 0xa5, 0x00, 0x01, 0x02, 0x03, 0x04, + 0x05, 0x06, 0x07 }; + + + /* for byte read/write command */ +#define CMD_RESET 0 +#define CMD_POWER_MODE 1 +#define CMD_DEV_STATUS 2 +#define CMD_REPORT_MAX_BASELINE 3 +#define CMD_REPORT_MIN_BASELINE 4 +#define SMBUS_BYTE_CMD(cmd) (((cmd) & 0x3f) << 1) +#define CYAPA_SMBUS_RESET SMBUS_BYTE_CMD(CMD_RESET) +#define CYAPA_SMBUS_POWER_MODE SMBUS_BYTE_CMD(CMD_POWER_MODE) +#define CYAPA_SMBUS_DEV_STATUS SMBUS_BYTE_CMD(CMD_DEV_STATUS) +#define CYAPA_SMBUS_MAX_BASELINE SMBUS_BYTE_CMD(CMD_REPORT_MAX_BASELINE) +#define CYAPA_SMBUS_MIN_BASELINE SMBUS_BYTE_CMD(CMD_REPORT_MIN_BASELINE) + + /* for group registers read/write command */ +#define REG_GROUP_DATA 0 +#define REG_GROUP_CMD 2 +#define REG_GROUP_QUERY 3 +#define SMBUS_GROUP_CMD(grp) (0x80 | (((grp) & 0x07) << 3)) +#define CYAPA_SMBUS_GROUP_DATA SMBUS_GROUP_CMD(REG_GROUP_DATA) +#define CYAPA_SMBUS_GROUP_CMD SMBUS_GROUP_CMD(REG_GROUP_CMD) +#define CYAPA_SMBUS_GROUP_QUERY SMBUS_GROUP_CMD(REG_GROUP_QUERY) + + /* for register block read/write command */ +#define CMD_BL_STATUS 0 +#define CMD_BL_HEAD 1 +#define CMD_BL_CMD 2 +#define CMD_BL_DATA 3 +#define CMD_BL_ALL 4 +#define CMD_BLK_PRODUCT_ID 5 +#define CMD_BLK_HEAD 6 +#define SMBUS_BLOCK_CMD(cmd) (0xc0 | (((cmd) & 0x1f) << 1)) + +/* register block read/write command in bootloader mode */ +#define CYAPA_SMBUS_BL_STATUS SMBUS_BLOCK_CMD(CMD_BL_STATUS) +#define CYAPA_SMBUS_BL_HEAD SMBUS_BLOCK_CMD(CMD_BL_HEAD) +#define CYAPA_SMBUS_BL_CMD SMBUS_BLOCK_CMD(CMD_BL_CMD) +#define CYAPA_SMBUS_BL_DATA SMBUS_BLOCK_CMD(CMD_BL_DATA) +#define CYAPA_SMBUS_BL_ALL SMBUS_BLOCK_CMD(CMD_BL_ALL) + +/* register block read/write command in operational mode */ +#define CYAPA_SMBUS_BLK_PRODUCT_ID SMBUS_BLOCK_CMD(CMD_BLK_PRODUCT_ID) +#define CYAPA_SMBUS_BLK_HEAD SMBUS_BLOCK_CMD(CMD_BLK_HEAD) + + /* for byte read/write command */ +#define CMD_RESET 0 +#define CMD_POWER_MODE 1 +#define CMD_DEV_STATUS 2 +#define CMD_REPORT_MAX_BASELINE 3 +#define CMD_REPORT_MIN_BASELINE 4 +#define SMBUS_BYTE_CMD(cmd) (((cmd) & 0x3f) << 1) +#define CYAPA_SMBUS_RESET SMBUS_BYTE_CMD(CMD_RESET) +#define CYAPA_SMBUS_POWER_MODE SMBUS_BYTE_CMD(CMD_POWER_MODE) +#define CYAPA_SMBUS_DEV_STATUS SMBUS_BYTE_CMD(CMD_DEV_STATUS) +#define CYAPA_SMBUS_MAX_BASELINE SMBUS_BYTE_CMD(CMD_REPORT_MAX_BASELINE) +#define CYAPA_SMBUS_MIN_BASELINE SMBUS_BYTE_CMD(CMD_REPORT_MIN_BASELINE) + + /* for group registers read/write command */ +#define REG_GROUP_DATA 0 +#define REG_GROUP_CMD 2 +#define REG_GROUP_QUERY 3 +#define SMBUS_GROUP_CMD(grp) (0x80 | (((grp) & 0x07) << 3)) +#define CYAPA_SMBUS_GROUP_DATA SMBUS_GROUP_CMD(REG_GROUP_DATA) +#define CYAPA_SMBUS_GROUP_CMD SMBUS_GROUP_CMD(REG_GROUP_CMD) +#define CYAPA_SMBUS_GROUP_QUERY SMBUS_GROUP_CMD(REG_GROUP_QUERY) + + /* for register block read/write command */ +#define CMD_BL_STATUS 0 +#define CMD_BL_HEAD 1 +#define CMD_BL_CMD 2 +#define CMD_BL_DATA 3 +#define CMD_BL_ALL 4 +#define CMD_BLK_PRODUCT_ID 5 +#define CMD_BLK_HEAD 6 +#define SMBUS_BLOCK_CMD(cmd) (0xc0 | (((cmd) & 0x1f) << 1)) + +/* register block read/write command in bootloader mode */ +#define CYAPA_SMBUS_BL_STATUS SMBUS_BLOCK_CMD(CMD_BL_STATUS) +#define CYAPA_SMBUS_BL_HEAD SMBUS_BLOCK_CMD(CMD_BL_HEAD) +#define CYAPA_SMBUS_BL_CMD SMBUS_BLOCK_CMD(CMD_BL_CMD) +#define CYAPA_SMBUS_BL_DATA SMBUS_BLOCK_CMD(CMD_BL_DATA) +#define CYAPA_SMBUS_BL_ALL SMBUS_BLOCK_CMD(CMD_BL_ALL) + +/* register block read/write command in operational mode */ +#define CYAPA_SMBUS_BLK_PRODUCT_ID SMBUS_BLOCK_CMD(CMD_BLK_PRODUCT_ID) +#define CYAPA_SMBUS_BLK_HEAD SMBUS_BLOCK_CMD(CMD_BLK_HEAD) + +struct cyapa_cmd_len { + u8 cmd; + u8 len; +}; + +/* maps generic CYAPA_CMD_* code to the I2C equivalent */ +static const struct cyapa_cmd_len cyapa_i2c_cmds[] = { + { CYAPA_OFFSET_SOFT_RESET, 1 }, /* CYAPA_CMD_SOFT_RESET */ + { REG_OFFSET_COMMAND_BASE + 1, 1 }, /* CYAPA_CMD_POWER_MODE */ + { REG_OFFSET_DATA_BASE, 1 }, /* CYAPA_CMD_DEV_STATUS */ + { REG_OFFSET_DATA_BASE, sizeof(struct cyapa_reg_data) }, + /* CYAPA_CMD_GROUP_DATA */ + { REG_OFFSET_COMMAND_BASE, 0 }, /* CYAPA_CMD_GROUP_CMD */ + { REG_OFFSET_QUERY_BASE, QUERY_DATA_SIZE }, /* CYAPA_CMD_GROUP_QUERY */ + { BL_HEAD_OFFSET, 3 }, /* CYAPA_CMD_BL_STATUS */ + { BL_HEAD_OFFSET, 16 }, /* CYAPA_CMD_BL_HEAD */ + { BL_HEAD_OFFSET, 16 }, /* CYAPA_CMD_BL_CMD */ + { BL_DATA_OFFSET, 16 }, /* CYAPA_CMD_BL_DATA */ + { BL_HEAD_OFFSET, 32 }, /* CYAPA_CMD_BL_ALL */ + { REG_OFFSET_QUERY_BASE, PRODUCT_ID_SIZE }, + /* CYAPA_CMD_BLK_PRODUCT_ID */ + { REG_OFFSET_DATA_BASE, 32 }, /* CYAPA_CMD_BLK_HEAD */ + { REG_OFFSET_MAX_BASELINE, 1 }, /* CYAPA_CMD_MAX_BASELINE */ + { REG_OFFSET_MIN_BASELINE, 1 }, /* CYAPA_CMD_MIN_BASELINE */ +}; + +static const struct cyapa_cmd_len cyapa_smbus_cmds[] = { + { CYAPA_SMBUS_RESET, 1 }, /* CYAPA_CMD_SOFT_RESET */ + { CYAPA_SMBUS_POWER_MODE, 1 }, /* CYAPA_CMD_POWER_MODE */ + { CYAPA_SMBUS_DEV_STATUS, 1 }, /* CYAPA_CMD_DEV_STATUS */ + { CYAPA_SMBUS_GROUP_DATA, sizeof(struct cyapa_reg_data) }, + /* CYAPA_CMD_GROUP_DATA */ + { CYAPA_SMBUS_GROUP_CMD, 2 }, /* CYAPA_CMD_GROUP_CMD */ + { CYAPA_SMBUS_GROUP_QUERY, QUERY_DATA_SIZE }, + /* CYAPA_CMD_GROUP_QUERY */ + { CYAPA_SMBUS_BL_STATUS, 3 }, /* CYAPA_CMD_BL_STATUS */ + { CYAPA_SMBUS_BL_HEAD, 16 }, /* CYAPA_CMD_BL_HEAD */ + { CYAPA_SMBUS_BL_CMD, 16 }, /* CYAPA_CMD_BL_CMD */ + { CYAPA_SMBUS_BL_DATA, 16 }, /* CYAPA_CMD_BL_DATA */ + { CYAPA_SMBUS_BL_ALL, 32 }, /* CYAPA_CMD_BL_ALL */ + { CYAPA_SMBUS_BLK_PRODUCT_ID, PRODUCT_ID_SIZE }, + /* CYAPA_CMD_BLK_PRODUCT_ID */ + { CYAPA_SMBUS_BLK_HEAD, 16 }, /* CYAPA_CMD_BLK_HEAD */ + { CYAPA_SMBUS_MAX_BASELINE, 1 }, /* CYAPA_CMD_MAX_BASELINE */ + { CYAPA_SMBUS_MIN_BASELINE, 1 }, /* CYAPA_CMD_MIN_BASELINE */ +}; + + +/* + * cyapa_smbus_read_block - perform smbus block read command + * @cyapa - private data structure of the driver + * @cmd - the properly encoded smbus command + * @len - expected length of smbus command result + * @values - buffer to store smbus command result + * + * Returns negative errno, else the number of bytes written. + * + * Note: + * In trackpad device, the memory block allocated for I2C register map + * is 256 bytes, so the max read block for I2C bus is 256 bytes. + */ +ssize_t cyapa_smbus_read_block(struct cyapa *cyapa, u8 cmd, size_t len, + u8 *values) +{ + ssize_t ret; + u8 index; + u8 smbus_cmd; + u8 *buf; + struct i2c_client *client = cyapa->client; + + if (!(SMBUS_BYTE_BLOCK_CMD_MASK & cmd)) + return -EINVAL; + + if (SMBUS_GROUP_BLOCK_CMD_MASK & cmd) { + /* read specific block registers command. */ + smbus_cmd = SMBUS_ENCODE_RW(cmd, SMBUS_READ); + ret = i2c_smbus_read_block_data(client, smbus_cmd, values); + goto out; + } + + ret = 0; + for (index = 0; index * I2C_SMBUS_BLOCK_MAX < len; index++) { + smbus_cmd = SMBUS_ENCODE_IDX(cmd, index); + smbus_cmd = SMBUS_ENCODE_RW(smbus_cmd, SMBUS_READ); + buf = values + I2C_SMBUS_BLOCK_MAX * index; + ret = i2c_smbus_read_block_data(client, smbus_cmd, buf); + if (ret < 0) + goto out; + } + +out: + return ret > 0 ? len : ret; +} + +static s32 cyapa_read_byte(struct cyapa *cyapa, u8 cmd_idx) +{ + u8 cmd; + + if (cyapa->smbus) { + cmd = cyapa_smbus_cmds[cmd_idx].cmd; + cmd = SMBUS_ENCODE_RW(cmd, SMBUS_READ); + } else { + cmd = cyapa_i2c_cmds[cmd_idx].cmd; + } + return i2c_smbus_read_byte_data(cyapa->client, cmd); +} + +static s32 cyapa_write_byte(struct cyapa *cyapa, u8 cmd_idx, u8 value) +{ + u8 cmd; + + if (cyapa->smbus) { + cmd = cyapa_smbus_cmds[cmd_idx].cmd; + cmd = SMBUS_ENCODE_RW(cmd, SMBUS_WRITE); + } else { + cmd = cyapa_i2c_cmds[cmd_idx].cmd; + } + return i2c_smbus_write_byte_data(cyapa->client, cmd, value); +} + +ssize_t cyapa_i2c_reg_read_block(struct cyapa *cyapa, u8 reg, size_t len, + u8 *values) +{ + return i2c_smbus_read_i2c_block_data(cyapa->client, reg, len, values); +} + +static ssize_t cyapa_i2c_reg_write_block(struct cyapa *cyapa, u8 reg, + size_t len, const u8 *values) +{ + return i2c_smbus_write_i2c_block_data(cyapa->client, reg, len, values); +} + +ssize_t cyapa_read_block(struct cyapa *cyapa, u8 cmd_idx, u8 *values) +{ + u8 cmd; + size_t len; + + if (cyapa->smbus) { + cmd = cyapa_smbus_cmds[cmd_idx].cmd; + len = cyapa_smbus_cmds[cmd_idx].len; + return cyapa_smbus_read_block(cyapa, cmd, len, values); + } + cmd = cyapa_i2c_cmds[cmd_idx].cmd; + len = cyapa_i2c_cmds[cmd_idx].len; + return cyapa_i2c_reg_read_block(cyapa, cmd, len, values); +} + +/* + * Determine the Gen3 trackpad device's current operating state. + * + */ +static int cyapa_gen3_state_parse(struct cyapa *cyapa, u8 *reg_data, int len) +{ + cyapa->state = CYAPA_STATE_NO_DEVICE; + + /* Parse based on Gen3 characteristic registers and bits */ + if (reg_data[REG_BL_FILE] == BL_FILE && + reg_data[REG_BL_ERROR] == BL_ERROR_NO_ERR_IDLE && + (reg_data[REG_BL_STATUS] == + (BL_STATUS_RUNNING | BL_STATUS_CSUM_VALID) || + reg_data[REG_BL_STATUS] == BL_STATUS_RUNNING)) { + /* + * Normal state after power on or reset, + * REG_BL_STATUS == 0x11, firmware image checksum is valid. + * REG_BL_STATUS == 0x10, firmware image checksum is invalid. + */ + cyapa->gen = CYAPA_GEN3; + cyapa->state = CYAPA_STATE_BL_IDLE; + } else if (reg_data[REG_BL_FILE] == BL_FILE && + (reg_data[REG_BL_STATUS] & BL_STATUS_RUNNING) == + BL_STATUS_RUNNING) { + cyapa->gen = CYAPA_GEN3; + if (reg_data[REG_BL_STATUS] & BL_STATUS_BUSY) { + cyapa->state = CYAPA_STATE_BL_BUSY; + } else { + if ((reg_data[REG_BL_ERROR] & BL_ERROR_BOOTLOADING) == + BL_ERROR_BOOTLOADING) + cyapa->state = CYAPA_STATE_BL_ACTIVE; + else + cyapa->state = CYAPA_STATE_BL_IDLE; + } + } else if ((reg_data[REG_OP_STATUS] & OP_STATUS_SRC) && + (reg_data[REG_OP_DATA1] & OP_DATA_VALID)) { + /* + * Normal state when running in operational mode, + * may also not in full power state or + * busying in command process. + */ + if (GEN3_FINGER_NUM(reg_data[REG_OP_DATA1]) <= + GEN3_MAX_FINGERS) { + /* Finger number data is valid. */ + cyapa->gen = CYAPA_GEN3; + cyapa->state = CYAPA_STATE_OP; + } + } else if (reg_data[REG_OP_STATUS] == 0x0C && + reg_data[REG_OP_DATA1] == 0x08) { + /* Op state when first two registers overwritten with 0x00 */ + cyapa->gen = CYAPA_GEN3; + cyapa->state = CYAPA_STATE_OP; + } else if (reg_data[REG_BL_STATUS] & + (BL_STATUS_RUNNING | BL_STATUS_BUSY)) { + cyapa->gen = CYAPA_GEN3; + cyapa->state = CYAPA_STATE_BL_BUSY; + } + + if (cyapa->gen == CYAPA_GEN3 && (cyapa->state == CYAPA_STATE_OP || + cyapa->state == CYAPA_STATE_BL_IDLE || + cyapa->state == CYAPA_STATE_BL_ACTIVE || + cyapa->state == CYAPA_STATE_BL_BUSY)) + return 0; + + return -EAGAIN; +} + +/* + * Enter bootloader by soft resetting the device. + * + * If device is already in the bootloader, the function just returns. + * Otherwise, reset the device; after reset, device enters bootloader idle + * state immediately. + * + * Returns: + * 0 on success + * -EAGAIN device was reset, but is not now in bootloader idle state + * < 0 if the device never responds within the timeout + */ +static int cyapa_gen3_bl_enter(struct cyapa *cyapa) +{ + int error; + int waiting_time; + + error = cyapa_poll_state(cyapa, 500); + if (error) + return error; + if (cyapa->state == CYAPA_STATE_BL_IDLE) { + /* Already in BL_IDLE. Skipping reset. */ + return 0; + } + + if (cyapa->state != CYAPA_STATE_OP) + return -EAGAIN; + + cyapa->operational = false; + cyapa->state = CYAPA_STATE_NO_DEVICE; + error = cyapa_write_byte(cyapa, CYAPA_CMD_SOFT_RESET, 0x01); + if (error) + return -EIO; + + usleep_range(25000, 50000); + waiting_time = 2000; /* For some shipset, max waiting time is 1~2s. */ + do { + error = cyapa_poll_state(cyapa, 500); + if (error) { + if (error == -ETIMEDOUT) { + waiting_time -= 500; + continue; + } + return error; + } + + if ((cyapa->state == CYAPA_STATE_BL_IDLE) && + !(cyapa->status[REG_BL_STATUS] & BL_STATUS_WATCHDOG)) + break; + + msleep(100); + waiting_time -= 100; + } while (waiting_time > 0); + + if ((cyapa->state != CYAPA_STATE_BL_IDLE) || + (cyapa->status[REG_BL_STATUS] & BL_STATUS_WATCHDOG)) + return -EAGAIN; + + return 0; +} + +static int cyapa_gen3_bl_activate(struct cyapa *cyapa) +{ + int error; + + error = cyapa_i2c_reg_write_block(cyapa, 0, sizeof(bl_activate), + bl_activate); + if (error) + return error; + + /* Wait for bootloader to activate; takes between 2 and 12 seconds */ + msleep(2000); + error = cyapa_poll_state(cyapa, 11000); + if (error) + return error; + if (cyapa->state != CYAPA_STATE_BL_ACTIVE) + return -EAGAIN; + + return 0; +} + +static int cyapa_gen3_bl_deactivate(struct cyapa *cyapa) +{ + int error; + + error = cyapa_i2c_reg_write_block(cyapa, 0, sizeof(bl_deactivate), + bl_deactivate); + if (error) + return error; + + /* Wait for bootloader to switch to idle state; should take < 100ms */ + msleep(100); + error = cyapa_poll_state(cyapa, 500); + if (error) + return error; + if (cyapa->state != CYAPA_STATE_BL_IDLE) + return -EAGAIN; + return 0; +} + +/* + * Exit bootloader + * + * Send bl_exit command, then wait 50 - 100 ms to let device transition to + * operational mode. If this is the first time the device's firmware is + * running, it can take up to 2 seconds to calibrate its sensors. So, poll + * the device's new state for up to 2 seconds. + * + * Returns: + * -EIO failure while reading from device + * -EAGAIN device is stuck in bootloader, b/c it has invalid firmware + * 0 device is supported and in operational mode + */ +static int cyapa_gen3_bl_exit(struct cyapa *cyapa) +{ + int error; + + error = cyapa_i2c_reg_write_block(cyapa, 0, sizeof(bl_exit), bl_exit); + if (error) + return error; + + /* + * Wait for bootloader to exit, and operation mode to start. + * Normally, this takes at least 50 ms. + */ + usleep_range(50000, 100000); + /* + * In addition, when a device boots for the first time after being + * updated to new firmware, it must first calibrate its sensors, which + * can take up to an additional 2 seconds. If the device power is + * running low, this may take even longer. + */ + error = cyapa_poll_state(cyapa, 4000); + if (error < 0) + return error; + if (cyapa->state != CYAPA_STATE_OP) + return -EAGAIN; + + return 0; +} + +static u16 cyapa_gen3_csum(const u8 *buf, size_t count) +{ + int i; + u16 csum = 0; + + for (i = 0; i < count; i++) + csum += buf[i]; + + return csum; +} + +/* + * Verify the integrity of a CYAPA firmware image file. + * + * The firmware image file is 30848 bytes, composed of 482 64-byte blocks. + * + * The first 2 blocks are the firmware header. + * The next 480 blocks are the firmware image. + * + * The first two bytes of the header hold the header checksum, computed by + * summing the other 126 bytes of the header. + * The last two bytes of the header hold the firmware image checksum, computed + * by summing the 30720 bytes of the image modulo 0xffff. + * + * Both checksums are stored little-endian. + */ +static int cyapa_gen3_check_fw(struct cyapa *cyapa, const struct firmware *fw) +{ + struct device *dev = &cyapa->client->dev; + u16 csum; + u16 csum_expected; + + /* Firmware must match exact 30848 bytes = 482 64-byte blocks. */ + if (fw->size != CYAPA_FW_SIZE) { + dev_err(dev, "invalid firmware size = %zu, expected %u.\n", + fw->size, CYAPA_FW_SIZE); + return -EINVAL; + } + + /* Verify header block */ + csum_expected = (fw->data[0] << 8) | fw->data[1]; + csum = cyapa_gen3_csum(&fw->data[2], CYAPA_FW_HDR_SIZE - 2); + if (csum != csum_expected) { + dev_err(dev, "%s %04x, expected: %04x\n", + "invalid firmware header checksum = ", + csum, csum_expected); + return -EINVAL; + } + + /* Verify firmware image */ + csum_expected = (fw->data[CYAPA_FW_HDR_SIZE - 2] << 8) | + fw->data[CYAPA_FW_HDR_SIZE - 1]; + csum = cyapa_gen3_csum(&fw->data[CYAPA_FW_HDR_SIZE], + CYAPA_FW_DATA_SIZE); + if (csum != csum_expected) { + dev_err(dev, "%s %04x, expected: %04x\n", + "invalid firmware header checksum = ", + csum, csum_expected); + return -EINVAL; + } + return 0; +} + +/* + * Write a |len| byte long buffer |buf| to the device, by chopping it up into a + * sequence of smaller |CYAPA_CMD_LEN|-length write commands. + * + * The data bytes for a write command are prepended with the 1-byte offset + * of the data relative to the start of |buf|. + */ +static int cyapa_gen3_write_buffer(struct cyapa *cyapa, + const u8 *buf, size_t len) +{ + int error; + size_t i; + unsigned char cmd[CYAPA_CMD_LEN + 1]; + size_t cmd_len; + + for (i = 0; i < len; i += CYAPA_CMD_LEN) { + const u8 *payload = &buf[i]; + + cmd_len = (len - i >= CYAPA_CMD_LEN) ? CYAPA_CMD_LEN : len - i; + cmd[0] = i; + memcpy(&cmd[1], payload, cmd_len); + + error = cyapa_i2c_reg_write_block(cyapa, 0, cmd_len + 1, cmd); + if (error) + return error; + } + return 0; +} + +/* + * A firmware block write command writes 64 bytes of data to a single flash + * page in the device. The 78-byte block write command has the format: + * <0xff> <CMD> <Key> <Start> <Data> <Data-Checksum> <CMD Checksum> + * + * <0xff> - every command starts with 0xff + * <CMD> - the write command value is 0x39 + * <Key> - write commands include an 8-byte key: { 00 01 02 03 04 05 06 07 } + * <Block> - Memory Block number (address / 64) (16-bit, big-endian) + * <Data> - 64 bytes of firmware image data + * <Data Checksum> - sum of 64 <Data> bytes, modulo 0xff + * <CMD Checksum> - sum of 77 bytes, from 0xff to <Data Checksum> + * + * Each write command is split into 5 i2c write transactions of up to 16 bytes. + * Each transaction starts with an i2c register offset: (00, 10, 20, 30, 40). + */ +static int cyapa_gen3_write_fw_block(struct cyapa *cyapa, + u16 block, const u8 *data) +{ + int ret; + struct gen3_write_block_cmd write_block_cmd; + u8 status[BL_STATUS_SIZE]; + int tries; + u8 bl_status, bl_error; + + /* Set write command and security key bytes. */ + write_block_cmd.checksum_seed = GEN3_BL_CMD_CHECKSUM_SEED; + write_block_cmd.cmd_code = GEN3_BL_CMD_WRITE_BLOCK; + memcpy(write_block_cmd.key, security_key, sizeof(security_key)); + put_unaligned_be16(block, &write_block_cmd.block_num); + memcpy(write_block_cmd.block_data, data, CYAPA_FW_BLOCK_SIZE); + write_block_cmd.block_checksum = cyapa_gen3_csum( + write_block_cmd.block_data, CYAPA_FW_BLOCK_SIZE); + write_block_cmd.cmd_checksum = cyapa_gen3_csum((u8 *)&write_block_cmd, + sizeof(write_block_cmd) - 1); + + ret = cyapa_gen3_write_buffer(cyapa, (u8 *)&write_block_cmd, + sizeof(write_block_cmd)); + if (ret) + return ret; + + /* Wait for write to finish */ + tries = 11; /* Programming for one block can take about 100ms. */ + do { + usleep_range(10000, 20000); + + /* Check block write command result status. */ + ret = cyapa_i2c_reg_read_block(cyapa, BL_HEAD_OFFSET, + BL_STATUS_SIZE, status); + if (ret != BL_STATUS_SIZE) + return (ret < 0) ? ret : -EIO; + } while ((status[REG_BL_STATUS] & BL_STATUS_BUSY) && --tries); + + /* Ignore WATCHDOG bit and reserved bits. */ + bl_status = status[REG_BL_STATUS] & ~BL_STATUS_REV_MASK; + bl_error = status[REG_BL_ERROR] & ~BL_ERROR_RESERVED; + + if (bl_status & BL_STATUS_BUSY) + ret = -ETIMEDOUT; + else if (bl_status != BL_STATUS_RUNNING || + bl_error != BL_ERROR_BOOTLOADING) + ret = -EIO; + else + ret = 0; + + return ret; +} + +static int cyapa_gen3_write_blocks(struct cyapa *cyapa, + size_t start_block, size_t block_count, + const u8 *image_data) +{ + int error; + int i; + + for (i = 0; i < block_count; i++) { + size_t block = start_block + i; + size_t addr = i * CYAPA_FW_BLOCK_SIZE; + const u8 *data = &image_data[addr]; + + error = cyapa_gen3_write_fw_block(cyapa, block, data); + if (error) + return error; + } + return 0; +} + +static int cyapa_gen3_do_fw_update(struct cyapa *cyapa, + const struct firmware *fw) +{ + struct device *dev = &cyapa->client->dev; + int error; + + /* First write data, starting at byte 128 of fw->data */ + error = cyapa_gen3_write_blocks(cyapa, + CYAPA_FW_DATA_BLOCK_START, CYAPA_FW_DATA_BLOCK_COUNT, + &fw->data[CYAPA_FW_HDR_BLOCK_COUNT * CYAPA_FW_BLOCK_SIZE]); + if (error) { + dev_err(dev, "FW update aborted, write image: %d\n", error); + return error; + } + + /* Then write checksum */ + error = cyapa_gen3_write_blocks(cyapa, + CYAPA_FW_HDR_BLOCK_START, CYAPA_FW_HDR_BLOCK_COUNT, + &fw->data[0]); + if (error) { + dev_err(dev, "FW update aborted, write checksum: %d\n", error); + return error; + } + + return 0; +} + +static ssize_t cyapa_gen3_do_calibrate(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct cyapa *cyapa = dev_get_drvdata(dev); + int tries; + int ret; + + ret = cyapa_read_byte(cyapa, CYAPA_CMD_DEV_STATUS); + if (ret < 0) { + dev_err(dev, "Error reading dev status: %d\n", ret); + goto out; + } + if ((ret & CYAPA_DEV_NORMAL) != CYAPA_DEV_NORMAL) { + dev_warn(dev, "Trackpad device is busy, device state: 0x%02x\n", + ret); + ret = -EAGAIN; + goto out; + } + + ret = cyapa_write_byte(cyapa, CYAPA_CMD_SOFT_RESET, + OP_RECALIBRATION_MASK); + if (ret < 0) { + dev_err(dev, "Failed to send calibrate command: %d\n", + ret); + goto out; + } + + tries = 20; /* max recalibration timeout 2s. */ + do { + /* + * For this recalibration, the max time will not exceed 2s. + * The average time is approximately 500 - 700 ms, and we + * will check the status every 100 - 200ms. + */ + usleep_range(100000, 200000); + + ret = cyapa_read_byte(cyapa, CYAPA_CMD_DEV_STATUS); + if (ret < 0) { + dev_err(dev, "Error reading dev status: %d\n", + ret); + goto out; + } + if ((ret & CYAPA_DEV_NORMAL) == CYAPA_DEV_NORMAL) + break; + } while (--tries); + + if (tries == 0) { + dev_err(dev, "Failed to calibrate. Timeout.\n"); + ret = -ETIMEDOUT; + goto out; + } + dev_dbg(dev, "Calibration successful.\n"); + +out: + return ret < 0 ? ret : count; +} + +static ssize_t cyapa_gen3_show_baseline(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct cyapa *cyapa = dev_get_drvdata(dev); + int max_baseline, min_baseline; + int tries; + int ret; + + ret = cyapa_read_byte(cyapa, CYAPA_CMD_DEV_STATUS); + if (ret < 0) { + dev_err(dev, "Error reading dev status. err = %d\n", ret); + goto out; + } + if ((ret & CYAPA_DEV_NORMAL) != CYAPA_DEV_NORMAL) { + dev_warn(dev, "Trackpad device is busy. device state = 0x%x\n", + ret); + ret = -EAGAIN; + goto out; + } + + ret = cyapa_write_byte(cyapa, CYAPA_CMD_SOFT_RESET, + OP_REPORT_BASELINE_MASK); + if (ret < 0) { + dev_err(dev, "Failed to send report baseline command. %d\n", + ret); + goto out; + } + + tries = 3; /* Try for 30 to 60 ms */ + do { + usleep_range(10000, 20000); + + ret = cyapa_read_byte(cyapa, CYAPA_CMD_DEV_STATUS); + if (ret < 0) { + dev_err(dev, "Error reading dev status. err = %d\n", + ret); + goto out; + } + if ((ret & CYAPA_DEV_NORMAL) == CYAPA_DEV_NORMAL) + break; + } while (--tries); + + if (tries == 0) { + dev_err(dev, "Device timed out going to Normal state.\n"); + ret = -ETIMEDOUT; + goto out; + } + + ret = cyapa_read_byte(cyapa, CYAPA_CMD_MAX_BASELINE); + if (ret < 0) { + dev_err(dev, "Failed to read max baseline. err = %d\n", ret); + goto out; + } + max_baseline = ret; + + ret = cyapa_read_byte(cyapa, CYAPA_CMD_MIN_BASELINE); + if (ret < 0) { + dev_err(dev, "Failed to read min baseline. err = %d\n", ret); + goto out; + } + min_baseline = ret; + + dev_dbg(dev, "Baseline report successful. Max: %d Min: %d\n", + max_baseline, min_baseline); + ret = scnprintf(buf, PAGE_SIZE, "%d %d\n", max_baseline, min_baseline); + +out: + return ret; +} + +/* + * cyapa_get_wait_time_for_pwr_cmd + * + * Compute the amount of time we need to wait after updating the touchpad + * power mode. The touchpad needs to consume the incoming power mode set + * command at the current clock rate. + */ + +static u16 cyapa_get_wait_time_for_pwr_cmd(u8 pwr_mode) +{ + switch (pwr_mode) { + case PWR_MODE_FULL_ACTIVE: return 20; + case PWR_MODE_BTN_ONLY: return 20; + case PWR_MODE_OFF: return 20; + default: return cyapa_pwr_cmd_to_sleep_time(pwr_mode) + 50; + } +} + +/* + * Set device power mode + * + * Write to the field to configure power state. Power states include : + * Full : Max scans and report rate. + * Idle : Report rate set by user specified time. + * ButtonOnly : No scans for fingers. When the button is triggered, + * a slave interrupt is asserted to notify host to wake up. + * Off : Only awake for i2c commands from host. No function for button + * or touch sensors. + * + * The power_mode command should conform to the following : + * Full : 0x3f + * Idle : Configurable from 20 to 1000ms. See note below for + * cyapa_sleep_time_to_pwr_cmd and cyapa_pwr_cmd_to_sleep_time + * ButtonOnly : 0x01 + * Off : 0x00 + * + * Device power mode can only be set when device is in operational mode. + */ +static int cyapa_gen3_set_power_mode(struct cyapa *cyapa, u8 power_mode, + u16 always_unused) +{ + int ret; + u8 power; + int tries; + u16 sleep_time; + + always_unused = 0; + if (cyapa->state != CYAPA_STATE_OP) + return 0; + + tries = SET_POWER_MODE_TRIES; + while (tries--) { + ret = cyapa_read_byte(cyapa, CYAPA_CMD_POWER_MODE); + if (ret >= 0) + break; + usleep_range(SET_POWER_MODE_DELAY, 2 * SET_POWER_MODE_DELAY); + } + if (ret < 0) + return ret; + + /* + * Return early if the power mode to set is the same as the current + * one. + */ + if ((ret & PWR_MODE_MASK) == power_mode) + return 0; + + sleep_time = cyapa_get_wait_time_for_pwr_cmd(ret & PWR_MODE_MASK); + power = ret; + power &= ~PWR_MODE_MASK; + power |= power_mode & PWR_MODE_MASK; + tries = SET_POWER_MODE_TRIES; + while (tries--) { + ret = cyapa_write_byte(cyapa, CYAPA_CMD_POWER_MODE, power); + if (!ret) + break; + usleep_range(SET_POWER_MODE_DELAY, 2 * SET_POWER_MODE_DELAY); + } + + /* + * Wait for the newly set power command to go in at the previous + * clock speed (scanrate) used by the touchpad firmware. Not + * doing so before issuing the next command may result in errors + * depending on the command's content. + */ + msleep(sleep_time); + return ret; +} + +static int cyapa_gen3_get_query_data(struct cyapa *cyapa) +{ + u8 query_data[QUERY_DATA_SIZE]; + int ret; + + if (cyapa->state != CYAPA_STATE_OP) + return -EBUSY; + + ret = cyapa_read_block(cyapa, CYAPA_CMD_GROUP_QUERY, query_data); + if (ret != QUERY_DATA_SIZE) + return (ret < 0) ? ret : -EIO; + + memcpy(&cyapa->product_id[0], &query_data[0], 5); + cyapa->product_id[5] = '-'; + memcpy(&cyapa->product_id[6], &query_data[5], 6); + cyapa->product_id[12] = '-'; + memcpy(&cyapa->product_id[13], &query_data[11], 2); + cyapa->product_id[15] = '\0'; + + cyapa->fw_maj_ver = query_data[15]; + cyapa->fw_min_ver = query_data[16]; + + cyapa->btn_capability = query_data[19] & CAPABILITY_BTN_MASK; + + cyapa->gen = query_data[20] & 0x0f; + + cyapa->max_abs_x = ((query_data[21] & 0xf0) << 4) | query_data[22]; + cyapa->max_abs_y = ((query_data[21] & 0x0f) << 8) | query_data[23]; + + cyapa->physical_size_x = + ((query_data[24] & 0xf0) << 4) | query_data[25]; + cyapa->physical_size_y = + ((query_data[24] & 0x0f) << 8) | query_data[26]; + + cyapa->max_z = 255; + + return 0; +} + +static int cyapa_gen3_bl_query_data(struct cyapa *cyapa) +{ + u8 bl_data[CYAPA_CMD_LEN]; + int ret; + + ret = cyapa_i2c_reg_read_block(cyapa, 0, CYAPA_CMD_LEN, bl_data); + if (ret != CYAPA_CMD_LEN) + return (ret < 0) ? ret : -EIO; + + /* + * This value will be updated again when entered application mode. + * If TP failed to enter application mode, this fw version values + * can be used as a reference. + * This firmware version valid when fw image checksum is valid. + */ + if (bl_data[REG_BL_STATUS] == + (BL_STATUS_RUNNING | BL_STATUS_CSUM_VALID)) { + cyapa->fw_maj_ver = bl_data[GEN3_BL_IDLE_FW_MAJ_VER_OFFSET]; + cyapa->fw_min_ver = bl_data[GEN3_BL_IDLE_FW_MIN_VER_OFFSET]; + } + + return 0; +} + +/* + * Check if device is operational. + * + * An operational device is responding, has exited bootloader, and has + * firmware supported by this driver. + * + * Returns: + * -EBUSY no device or in bootloader + * -EIO failure while reading from device + * -EAGAIN device is still in bootloader + * if ->state = CYAPA_STATE_BL_IDLE, device has invalid firmware + * -EINVAL device is in operational mode, but not supported by this driver + * 0 device is supported + */ +static int cyapa_gen3_do_operational_check(struct cyapa *cyapa) +{ + struct device *dev = &cyapa->client->dev; + int error; + + switch (cyapa->state) { + case CYAPA_STATE_BL_ACTIVE: + error = cyapa_gen3_bl_deactivate(cyapa); + if (error) { + dev_err(dev, "failed to bl_deactivate: %d\n", error); + return error; + } + + /* Fallthrough state */ + case CYAPA_STATE_BL_IDLE: + /* Try to get firmware version in bootloader mode. */ + cyapa_gen3_bl_query_data(cyapa); + + error = cyapa_gen3_bl_exit(cyapa); + if (error) { + dev_err(dev, "failed to bl_exit: %d\n", error); + return error; + } + + /* Fallthrough state */ + case CYAPA_STATE_OP: + /* + * Reading query data before going back to the full mode + * may cause problems, so we set the power mode first here. + */ + error = cyapa_gen3_set_power_mode(cyapa, + PWR_MODE_FULL_ACTIVE, 0); + if (error) + dev_err(dev, "%s: set full power mode failed: %d\n", + __func__, error); + error = cyapa_gen3_get_query_data(cyapa); + if (error < 0) + return error; + + /* Only support firmware protocol gen3 */ + if (cyapa->gen != CYAPA_GEN3) { + dev_err(dev, "unsupported protocol version (%d)", + cyapa->gen); + return -EINVAL; + } + + /* Only support product ID starting with CYTRA */ + if (memcmp(cyapa->product_id, product_id, + strlen(product_id)) != 0) { + dev_err(dev, "unsupported product ID (%s)\n", + cyapa->product_id); + return -EINVAL; + } + + return 0; + + default: + return -EIO; + } + return 0; +} + +/* + * Return false, do not continue process + * Return true, continue process. + */ +static bool cyapa_gen3_irq_cmd_handler(struct cyapa *cyapa) +{ + /* Not gen3 irq command response, skip for continue. */ + if (cyapa->gen != CYAPA_GEN3) + return true; + + if (cyapa->operational) + return true; + + /* + * Driver in detecting or other interface function processing, + * so, stop cyapa_gen3_irq_handler to continue process to + * avoid unwanted to error detecting and processing. + * + * And also, avoid the periodicly accerted interrupts to be processed + * as touch inputs when gen3 failed to launch into application mode, + * which will cause gen3 stays in bootloader mode. + */ + return false; +} + +static int cyapa_gen3_irq_handler(struct cyapa *cyapa) +{ + struct input_dev *input = cyapa->input; + struct device *dev = &cyapa->client->dev; + struct cyapa_reg_data data; + int num_fingers; + int ret; + int i; + + ret = cyapa_read_block(cyapa, CYAPA_CMD_GROUP_DATA, (u8 *)&data); + if (ret != sizeof(data)) { + dev_err(dev, "failed to read report data, (%d)\n", ret); + return -EINVAL; + } + + if ((data.device_status & OP_STATUS_SRC) != OP_STATUS_SRC || + (data.device_status & OP_STATUS_DEV) != CYAPA_DEV_NORMAL || + (data.finger_btn & OP_DATA_VALID) != OP_DATA_VALID) { + dev_err(dev, "invalid device state bytes, %02x %02x\n", + data.device_status, data.finger_btn); + return -EINVAL; + } + + num_fingers = (data.finger_btn >> 4) & 0x0f; + for (i = 0; i < num_fingers; i++) { + const struct cyapa_touch *touch = &data.touches[i]; + /* Note: touch->id range is 1 to 15; slots are 0 to 14. */ + int slot = touch->id - 1; + + input_mt_slot(input, slot); + input_mt_report_slot_state(input, MT_TOOL_FINGER, true); + input_report_abs(input, ABS_MT_POSITION_X, + ((touch->xy_hi & 0xf0) << 4) | touch->x_lo); + input_report_abs(input, ABS_MT_POSITION_Y, + ((touch->xy_hi & 0x0f) << 8) | touch->y_lo); + input_report_abs(input, ABS_MT_PRESSURE, touch->pressure); + } + + input_mt_sync_frame(input); + + if (cyapa->btn_capability & CAPABILITY_LEFT_BTN_MASK) + input_report_key(input, BTN_LEFT, + !!(data.finger_btn & OP_DATA_LEFT_BTN)); + if (cyapa->btn_capability & CAPABILITY_MIDDLE_BTN_MASK) + input_report_key(input, BTN_MIDDLE, + !!(data.finger_btn & OP_DATA_MIDDLE_BTN)); + if (cyapa->btn_capability & CAPABILITY_RIGHT_BTN_MASK) + input_report_key(input, BTN_RIGHT, + !!(data.finger_btn & OP_DATA_RIGHT_BTN)); + input_sync(input); + + return 0; +} + +static int cyapa_gen3_initialize(struct cyapa *cyapa) { return 0; } +static int cyapa_gen3_bl_initiate(struct cyapa *cyapa, + const struct firmware *fw) { return 0; } +static int cyapa_gen3_empty_output_data(struct cyapa *cyapa, + u8 *buf, int *len, cb_sort func) { return 0; } + +const struct cyapa_dev_ops cyapa_gen3_ops = { + .check_fw = cyapa_gen3_check_fw, + .bl_enter = cyapa_gen3_bl_enter, + .bl_activate = cyapa_gen3_bl_activate, + .update_fw = cyapa_gen3_do_fw_update, + .bl_deactivate = cyapa_gen3_bl_deactivate, + .bl_initiate = cyapa_gen3_bl_initiate, + + .show_baseline = cyapa_gen3_show_baseline, + .calibrate_store = cyapa_gen3_do_calibrate, + + .initialize = cyapa_gen3_initialize, + + .state_parse = cyapa_gen3_state_parse, + .operational_check = cyapa_gen3_do_operational_check, + + .irq_handler = cyapa_gen3_irq_handler, + .irq_cmd_handler = cyapa_gen3_irq_cmd_handler, + .sort_empty_output_data = cyapa_gen3_empty_output_data, + .set_power_mode = cyapa_gen3_set_power_mode, +}; diff --git a/drivers/input/mouse/cyapa_gen5.c b/drivers/input/mouse/cyapa_gen5.c new file mode 100644 index 000000000000..ddf5393a1180 --- /dev/null +++ b/drivers/input/mouse/cyapa_gen5.c @@ -0,0 +1,2777 @@ +/* + * Cypress APA trackpad with I2C interface + * + * Author: Dudley Du <dudl@cypress.com> + * + * Copyright (C) 2014 Cypress Semiconductor, Inc. + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive for + * more details. + */ + +#include <linux/delay.h> +#include <linux/i2c.h> +#include <linux/input.h> +#include <linux/input/mt.h> +#include <linux/mutex.h> +#include <linux/completion.h> +#include <linux/slab.h> +#include <linux/unaligned/access_ok.h> +#include <linux/crc-itu-t.h> +#include "cyapa.h" + + +/* Macro of Gen5 */ +#define RECORD_EVENT_NONE 0 +#define RECORD_EVENT_TOUCHDOWN 1 +#define RECORD_EVENT_DISPLACE 2 +#define RECORD_EVENT_LIFTOFF 3 + +#define CYAPA_TSG_FLASH_MAP_BLOCK_SIZE 0x80 +#define CYAPA_TSG_IMG_FW_HDR_SIZE 13 +#define CYAPA_TSG_FW_ROW_SIZE (CYAPA_TSG_FLASH_MAP_BLOCK_SIZE) +#define CYAPA_TSG_IMG_START_ROW_NUM 0x002e +#define CYAPA_TSG_IMG_END_ROW_NUM 0x01fe +#define CYAPA_TSG_IMG_APP_INTEGRITY_ROW_NUM 0x01ff +#define CYAPA_TSG_IMG_MAX_RECORDS (CYAPA_TSG_IMG_END_ROW_NUM - \ + CYAPA_TSG_IMG_START_ROW_NUM + 1 + 1) +#define CYAPA_TSG_IMG_READ_SIZE (CYAPA_TSG_FLASH_MAP_BLOCK_SIZE / 2) +#define CYAPA_TSG_START_OF_APPLICATION 0x1700 +#define CYAPA_TSG_APP_INTEGRITY_SIZE 60 +#define CYAPA_TSG_FLASH_MAP_METADATA_SIZE 60 +#define CYAPA_TSG_BL_KEY_SIZE 8 + +#define CYAPA_TSG_MAX_CMD_SIZE 256 + +#define GEN5_BL_CMD_VERIFY_APP_INTEGRITY 0x31 +#define GEN5_BL_CMD_GET_BL_INFO 0x38 +#define GEN5_BL_CMD_PROGRAM_VERIFY_ROW 0x39 +#define GEN5_BL_CMD_LAUNCH_APP 0x3b +#define GEN5_BL_CMD_INITIATE_BL 0x48 + +#define GEN5_HID_DESCRIPTOR_ADDR 0x0001 +#define GEN5_REPORT_DESCRIPTOR_ADDR 0x0002 +#define GEN5_INPUT_REPORT_ADDR 0x0003 +#define GEN5_OUTPUT_REPORT_ADDR 0x0004 +#define GEN5_CMD_DATA_ADDR 0x0006 + +#define GEN5_TOUCH_REPORT_HEAD_SIZE 7 +#define GEN5_TOUCH_REPORT_MAX_SIZE 127 +#define GEN5_BTN_REPORT_HEAD_SIZE 6 +#define GEN5_BTN_REPORT_MAX_SIZE 14 +#define GEN5_WAKEUP_EVENT_SIZE 4 +#define GEN5_RAW_DATA_HEAD_SIZE 24 + +#define GEN5_BL_CMD_REPORT_ID 0x40 +#define GEN5_BL_RESP_REPORT_ID 0x30 +#define GEN5_APP_CMD_REPORT_ID 0x2f +#define GEN5_APP_RESP_REPORT_ID 0x1f + +#define GEN5_APP_DEEP_SLEEP_REPORT_ID 0xf0 +#define GEN5_DEEP_SLEEP_RESP_LENGTH 5 + +#define GEN5_CMD_GET_PARAMETER 0x05 +#define GEN5_CMD_SET_PARAMETER 0x06 +#define GEN5_PARAMETER_ACT_INTERVL_ID 0x4d +#define GEN5_PARAMETER_ACT_INTERVL_SIZE 1 +#define GEN5_PARAMETER_ACT_LFT_INTERVL_ID 0x4f +#define GEN5_PARAMETER_ACT_LFT_INTERVL_SIZE 2 +#define GEN5_PARAMETER_LP_INTRVL_ID 0x4c +#define GEN5_PARAMETER_LP_INTRVL_SIZE 2 + +#define GEN5_PARAMETER_DISABLE_PIP_REPORT 0x08 + +#define GEN5_POWER_STATE_ACTIVE 0x01 +#define GEN5_POWER_STATE_LOOK_FOR_TOUCH 0x02 +#define GEN5_POWER_STATE_READY 0x03 +#define GEN5_POWER_STATE_IDLE 0x04 +#define GEN5_POWER_STATE_BTN_ONLY 0x05 +#define GEN5_POWER_STATE_OFF 0x06 + +#define GEN5_DEEP_SLEEP_STATE_MASK 0x03 +#define GEN5_DEEP_SLEEP_STATE_ON 0x00 +#define GEN5_DEEP_SLEEP_STATE_OFF 0x01 + +#define GEN5_DEEP_SLEEP_OPCODE 0x08 +#define GEN5_DEEP_SLEEP_OPCODE_MASK 0x0f + +#define GEN5_POWER_READY_MAX_INTRVL_TIME 50 /* Unit: ms */ +#define GEN5_POWER_IDLE_MAX_INTRVL_TIME 250 /* Unit: ms */ + +#define GEN5_CMD_REPORT_ID_OFFSET 4 + +#define GEN5_RESP_REPORT_ID_OFFSET 2 +#define GEN5_RESP_RSVD_OFFSET 3 +#define GEN5_RESP_RSVD_KEY 0x00 +#define GEN5_RESP_BL_SOP_OFFSET 4 +#define GEN5_SOP_KEY 0x01 /* Start of Packet */ +#define GEN5_EOP_KEY 0x17 /* End of Packet */ +#define GEN5_RESP_APP_CMD_OFFSET 4 +#define GET_GEN5_CMD_CODE(reg) ((reg) & 0x7f) + +#define VALID_CMD_RESP_HEADER(resp, cmd) \ + (((resp)[GEN5_RESP_REPORT_ID_OFFSET] == GEN5_APP_RESP_REPORT_ID) && \ + ((resp)[GEN5_RESP_RSVD_OFFSET] == GEN5_RESP_RSVD_KEY) && \ + (GET_GEN5_CMD_CODE((resp)[GEN5_RESP_APP_CMD_OFFSET]) == (cmd))) + +#define GEN5_MIN_BL_CMD_LENGTH 13 +#define GEN5_MIN_BL_RESP_LENGTH 11 +#define GEN5_MIN_APP_CMD_LENGTH 7 +#define GEN5_MIN_APP_RESP_LENGTH 5 +#define GEN5_UNSUPPORTED_CMD_RESP_LENGTH 6 + +#define GEN5_RESP_LENGTH_OFFSET 0x00 +#define GEN5_RESP_LENGTH_SIZE 2 + +#define GEN5_HID_DESCRIPTOR_SIZE 32 +#define GEN5_BL_HID_REPORT_ID 0xff +#define GEN5_APP_HID_REPORT_ID 0xf7 +#define GEN5_BL_MAX_OUTPUT_LENGTH 0x0100 +#define GEN5_APP_MAX_OUTPUT_LENGTH 0x00fe + +#define GEN5_BL_REPORT_DESCRIPTOR_SIZE 0x1d +#define GEN5_BL_REPORT_DESCRIPTOR_ID 0xfe +#define GEN5_APP_REPORT_DESCRIPTOR_SIZE 0xee +#define GEN5_APP_CONTRACT_REPORT_DESCRIPTOR_SIZE 0xfa +#define GEN5_APP_REPORT_DESCRIPTOR_ID 0xf6 + +#define GEN5_TOUCH_REPORT_ID 0x01 +#define GEN5_BTN_REPORT_ID 0x03 +#define GEN5_WAKEUP_EVENT_REPORT_ID 0x04 +#define GEN5_OLD_PUSH_BTN_REPORT_ID 0x05 +#define GEN5_PUSH_BTN_REPORT_ID 0x06 + +#define GEN5_CMD_COMPLETE_SUCCESS(status) ((status) == 0x00) + +#define GEN5_BL_INITIATE_RESP_LEN 11 +#define GEN5_BL_FAIL_EXIT_RESP_LEN 11 +#define GEN5_BL_FAIL_EXIT_STATUS_CODE 0x0c +#define GEN5_BL_VERIFY_INTEGRITY_RESP_LEN 12 +#define GEN5_BL_INTEGRITY_CHEKC_PASS 0x00 +#define GEN5_BL_BLOCK_WRITE_RESP_LEN 11 +#define GEN5_BL_READ_APP_INFO_RESP_LEN 31 +#define GEN5_CMD_CALIBRATE 0x28 +#define CYAPA_SENSING_MODE_MUTUAL_CAP_FINE 0x00 +#define CYAPA_SENSING_MODE_SELF_CAP 0x02 + +#define GEN5_CMD_RETRIEVE_DATA_STRUCTURE 0x24 +#define GEN5_RETRIEVE_MUTUAL_PWC_DATA 0x00 +#define GEN5_RETRIEVE_SELF_CAP_PWC_DATA 0x01 + +#define GEN5_RETRIEVE_DATA_ELEMENT_SIZE_MASK 0x07 + +#define GEN5_CMD_EXECUTE_PANEL_SCAN 0x2a +#define GEN5_CMD_RETRIEVE_PANEL_SCAN 0x2b +#define GEN5_PANEL_SCAN_MUTUAL_RAW_DATA 0x00 +#define GEN5_PANEL_SCAN_MUTUAL_BASELINE 0x01 +#define GEN5_PANEL_SCAN_MUTUAL_DIFFCOUNT 0x02 +#define GEN5_PANEL_SCAN_SELF_RAW_DATA 0x03 +#define GEN5_PANEL_SCAN_SELF_BASELINE 0x04 +#define GEN5_PANEL_SCAN_SELF_DIFFCOUNT 0x05 + +/* The offset only valid for reterive PWC and panel scan commands */ +#define GEN5_RESP_DATA_STRUCTURE_OFFSET 10 +#define GEN5_PWC_DATA_ELEMENT_SIZE_MASK 0x07 + +#define GEN5_NUMBER_OF_TOUCH_OFFSET 5 +#define GEN5_NUMBER_OF_TOUCH_MASK 0x1f +#define GEN5_BUTTONS_OFFSET 5 +#define GEN5_BUTTONS_MASK 0x0f +#define GEN5_GET_EVENT_ID(reg) (((reg) >> 5) & 0x03) +#define GEN5_GET_TOUCH_ID(reg) ((reg) & 0x1f) + +#define GEN5_PRODUCT_FAMILY_MASK 0xf000 +#define GEN5_PRODUCT_FAMILY_TRACKPAD 0x1000 + +#define TSG_INVALID_CMD 0xff + +struct cyapa_gen5_touch_record { + /* + * Bit 7 - 3: reserved + * Bit 2 - 0: touch type; + * 0 : standard finger; + * 1 - 15 : reserved. + */ + u8 touch_type; + + /* + * Bit 7: indicates touch liftoff status. + * 0 : touch is currently on the panel. + * 1 : touch record indicates a liftoff. + * Bit 6 - 5: indicates an event associated with this touch instance + * 0 : no event + * 1 : touchdown + * 2 : significant displacement (> active distance) + * 3 : liftoff (record reports last known coordinates) + * Bit 4 - 0: An arbitrary ID tag associated with a finger + * to allow tracking a touch as it moves around the panel. + */ + u8 touch_tip_event_id; + + /* Bit 7 - 0 of X-axis coordinate of the touch in pixel. */ + u8 x_lo; + + /* Bit 15 - 8 of X-axis coordinate of the touch in pixel. */ + u8 x_hi; + + /* Bit 7 - 0 of Y-axis coordinate of the touch in pixel. */ + u8 y_lo; + + /* Bit 15 - 8 of Y-axis coordinate of the touch in pixel. */ + u8 y_hi; + + /* Touch intensity in counts, pressure value. */ + u8 z; + + /* + * The length of the major axis of the ellipse of contact between + * the finger and the panel (ABS_MT_TOUCH_MAJOR). + */ + u8 major_axis_len; + + /* + * The length of the minor axis of the ellipse of contact between + * the finger and the panel (ABS_MT_TOUCH_MINOR). + */ + u8 minor_axis_len; + + /* + * The length of the major axis of the approaching tool. + * (ABS_MT_WIDTH_MAJOR) + */ + u8 major_tool_len; + + /* + * The length of the minor axis of the approaching tool. + * (ABS_MT_WIDTH_MINOR) + */ + u8 minor_tool_len; + + /* + * The angle between the panel vertical axis and + * the major axis of the contact ellipse. This value is an 8-bit + * signed integer. The range is -127 to +127 (corresponding to + * -90 degree and +90 degree respectively). + * The positive direction is clockwise from the vertical axis. + * If the ellipse of contact degenerates into a circle, + * orientation is reported as 0. + */ + u8 orientation; +} __packed; + +struct cyapa_gen5_report_data { + u8 report_head[GEN5_TOUCH_REPORT_HEAD_SIZE]; + struct cyapa_gen5_touch_record touch_records[10]; +} __packed; + +struct cyapa_tsg_bin_image_head { + u8 head_size; /* Unit: bytes, including itself. */ + u8 ttda_driver_major_version; /* Reserved as 0. */ + u8 ttda_driver_minor_version; /* Reserved as 0. */ + u8 fw_major_version; + u8 fw_minor_version; + u8 fw_revision_control_number[8]; +} __packed; + +struct cyapa_tsg_bin_image_data_record { + u8 flash_array_id; + __be16 row_number; + /* The number of bytes of flash data contained in this record. */ + __be16 record_len; + /* The flash program data. */ + u8 record_data[CYAPA_TSG_FW_ROW_SIZE]; +} __packed; + +struct cyapa_tsg_bin_image { + struct cyapa_tsg_bin_image_head image_head; + struct cyapa_tsg_bin_image_data_record records[0]; +} __packed; + +struct gen5_bl_packet_start { + u8 sop; /* Start of packet, must be 01h */ + u8 cmd_code; + __le16 data_length; /* Size of data parameter start from data[0] */ +} __packed; + +struct gen5_bl_packet_end { + __le16 crc; + u8 eop; /* End of packet, must be 17h */ +} __packed; + +struct gen5_bl_cmd_head { + __le16 addr; /* Output report register address, must be 0004h */ + /* Size of packet not including output report register address */ + __le16 length; + u8 report_id; /* Bootloader output report id, must be 40h */ + u8 rsvd; /* Reserved, must be 0 */ + struct gen5_bl_packet_start packet_start; + u8 data[0]; /* Command data variable based on commands */ +} __packed; + +/* Initiate bootload command data structure. */ +struct gen5_bl_initiate_cmd_data { + /* Key must be "A5h 01h 02h 03h FFh FEh FDh 5Ah" */ + u8 key[CYAPA_TSG_BL_KEY_SIZE]; + u8 metadata_raw_parameter[CYAPA_TSG_FLASH_MAP_METADATA_SIZE]; + __le16 metadata_crc; +} __packed; + +struct gen5_bl_metadata_row_params { + __le16 size; + __le16 maximum_size; + __le32 app_start; + __le16 app_len; + __le16 app_crc; + __le32 app_entry; + __le32 upgrade_start; + __le16 upgrade_len; + __le16 entry_row_crc; + u8 padding[36]; /* Padding data must be 0 */ + __le16 metadata_crc; /* CRC starts at offset of 60 */ +} __packed; + +/* Bootload program and verify row command data structure */ +struct gen5_bl_flash_row_head { + u8 flash_array_id; + __le16 flash_row_id; + u8 flash_data[0]; +} __packed; + +struct gen5_app_cmd_head { + __le16 addr; /* Output report register address, must be 0004h */ + /* Size of packet not including output report register address */ + __le16 length; + u8 report_id; /* Application output report id, must be 2Fh */ + u8 rsvd; /* Reserved, must be 0 */ + /* + * Bit 7: reserved, must be 0. + * Bit 6-0: command code. + */ + u8 cmd_code; + u8 parameter_data[0]; /* Parameter data variable based on cmd_code */ +} __packed; + +/* Applicaton get/set parameter command data structure */ +struct gen5_app_set_parameter_data { + u8 parameter_id; + u8 parameter_size; + __le32 value; +} __packed; + +struct gen5_app_get_parameter_data { + u8 parameter_id; +} __packed; + +struct gen5_retrieve_panel_scan_data { + __le16 read_offset; + __le16 read_elements; + u8 data_id; +} __packed; + +/* Variables to record latest gen5 trackpad power states. */ +#define GEN5_DEV_SET_PWR_STATE(cyapa, s) ((cyapa)->dev_pwr_mode = (s)) +#define GEN5_DEV_GET_PWR_STATE(cyapa) ((cyapa)->dev_pwr_mode) +#define GEN5_DEV_SET_SLEEP_TIME(cyapa, t) ((cyapa)->dev_sleep_time = (t)) +#define GEN5_DEV_GET_SLEEP_TIME(cyapa) ((cyapa)->dev_sleep_time) +#define GEN5_DEV_UNINIT_SLEEP_TIME(cyapa) \ + (((cyapa)->dev_sleep_time) == UNINIT_SLEEP_TIME) + + +static u8 cyapa_gen5_bl_cmd_key[] = { 0xa5, 0x01, 0x02, 0x03, + 0xff, 0xfe, 0xfd, 0x5a }; + +static int cyapa_gen5_initialize(struct cyapa *cyapa) +{ + struct cyapa_gen5_cmd_states *gen5_pip = &cyapa->cmd_states.gen5; + + init_completion(&gen5_pip->cmd_ready); + atomic_set(&gen5_pip->cmd_issued, 0); + mutex_init(&gen5_pip->cmd_lock); + + gen5_pip->resp_sort_func = NULL; + gen5_pip->in_progress_cmd = TSG_INVALID_CMD; + gen5_pip->resp_data = NULL; + gen5_pip->resp_len = NULL; + + cyapa->dev_pwr_mode = UNINIT_PWR_MODE; + cyapa->dev_sleep_time = UNINIT_SLEEP_TIME; + + return 0; +} + +/* Return negative errno, or else the number of bytes read. */ +static ssize_t cyapa_i2c_pip_read(struct cyapa *cyapa, u8 *buf, size_t size) +{ + int ret; + + if (size == 0) + return 0; + + if (!buf || size > CYAPA_REG_MAP_SIZE) + return -EINVAL; + + ret = i2c_master_recv(cyapa->client, buf, size); + + if (ret != size) + return (ret < 0) ? ret : -EIO; + + return size; +} + +/** + * Return a negative errno code else zero on success. + */ +static ssize_t cyapa_i2c_pip_write(struct cyapa *cyapa, u8 *buf, size_t size) +{ + int ret; + + if (!buf || !size) + return -EINVAL; + + ret = i2c_master_send(cyapa->client, buf, size); + + if (ret != size) + return (ret < 0) ? ret : -EIO; + + return 0; +} + +/** + * This function is aimed to dump all not read data in Gen5 trackpad + * before send any command, otherwise, the interrupt line will be blocked. + */ +static int cyapa_empty_pip_output_data(struct cyapa *cyapa, + u8 *buf, int *len, cb_sort func) +{ + struct cyapa_gen5_cmd_states *gen5_pip = &cyapa->cmd_states.gen5; + int length; + int report_count; + int empty_count; + int buf_len; + int error; + + buf_len = 0; + if (len) { + buf_len = (*len < CYAPA_REG_MAP_SIZE) ? + *len : CYAPA_REG_MAP_SIZE; + *len = 0; + } + + report_count = 8; /* max 7 pending data before command response data */ + empty_count = 0; + do { + /* + * Depending on testing in cyapa driver, there are max 5 "02 00" + * packets between two valid buffered data report in firmware. + * So in order to dump all buffered data out and + * make interrupt line release for reassert again, + * we must set the empty_count check value bigger than 5 to + * make it work. Otherwise, in some situation, + * the interrupt line may unable to reactive again, + * which will cause trackpad device unable to + * report data any more. + * for example, it may happen in EFT and ESD testing. + */ + if (empty_count > 5) + return 0; + + error = cyapa_i2c_pip_read(cyapa, gen5_pip->empty_buf, + GEN5_RESP_LENGTH_SIZE); + if (error < 0) + return error; + + length = get_unaligned_le16(gen5_pip->empty_buf); + if (length == GEN5_RESP_LENGTH_SIZE) { + empty_count++; + continue; + } else if (length > CYAPA_REG_MAP_SIZE) { + /* Should not happen */ + return -EINVAL; + } else if (length == 0) { + /* Application or bootloader launch data polled out. */ + length = GEN5_RESP_LENGTH_SIZE; + if (buf && buf_len && func && + func(cyapa, gen5_pip->empty_buf, length)) { + length = min(buf_len, length); + memcpy(buf, gen5_pip->empty_buf, length); + *len = length; + /* Response found, success. */ + return 0; + } + continue; + } + + error = cyapa_i2c_pip_read(cyapa, gen5_pip->empty_buf, length); + if (error < 0) + return error; + + report_count--; + empty_count = 0; + length = get_unaligned_le16(gen5_pip->empty_buf); + if (length <= GEN5_RESP_LENGTH_SIZE) { + empty_count++; + } else if (buf && buf_len && func && + func(cyapa, gen5_pip->empty_buf, length)) { + length = min(buf_len, length); + memcpy(buf, gen5_pip->empty_buf, length); + *len = length; + /* Response found, success. */ + return 0; + } + + error = -EINVAL; + } while (report_count); + + return error; +} + +static int cyapa_do_i2c_pip_cmd_irq_sync( + struct cyapa *cyapa, + u8 *cmd, size_t cmd_len, + unsigned long timeout) +{ + struct cyapa_gen5_cmd_states *gen5_pip = &cyapa->cmd_states.gen5; + int error; + + /* Wait for interrupt to set ready completion */ + init_completion(&gen5_pip->cmd_ready); + + atomic_inc(&gen5_pip->cmd_issued); + error = cyapa_i2c_pip_write(cyapa, cmd, cmd_len); + if (error) { + atomic_dec(&gen5_pip->cmd_issued); + return (error < 0) ? error : -EIO; + } + + /* Wait for interrupt to indicate command is completed. */ + timeout = wait_for_completion_timeout(&gen5_pip->cmd_ready, + msecs_to_jiffies(timeout)); + if (timeout == 0) { + atomic_dec(&gen5_pip->cmd_issued); + return -ETIMEDOUT; + } + + return 0; +} + +static int cyapa_do_i2c_pip_cmd_polling( + struct cyapa *cyapa, + u8 *cmd, size_t cmd_len, + u8 *resp_data, int *resp_len, + unsigned long timeout, + cb_sort func) +{ + struct cyapa_gen5_cmd_states *gen5_pip = &cyapa->cmd_states.gen5; + int tries; + int length; + int error; + + atomic_inc(&gen5_pip->cmd_issued); + error = cyapa_i2c_pip_write(cyapa, cmd, cmd_len); + if (error) { + atomic_dec(&gen5_pip->cmd_issued); + return error < 0 ? error : -EIO; + } + + length = resp_len ? *resp_len : 0; + if (resp_data && resp_len && length != 0 && func) { + tries = timeout / 5; + do { + usleep_range(3000, 5000); + *resp_len = length; + error = cyapa_empty_pip_output_data(cyapa, + resp_data, resp_len, func); + if (error || *resp_len == 0) + continue; + else + break; + } while (--tries > 0); + if ((error || *resp_len == 0) || tries <= 0) + error = error ? error : -ETIMEDOUT; + } + + atomic_dec(&gen5_pip->cmd_issued); + return error; +} + +static int cyapa_i2c_pip_cmd_irq_sync( + struct cyapa *cyapa, + u8 *cmd, int cmd_len, + u8 *resp_data, int *resp_len, + unsigned long timeout, + cb_sort func, + bool irq_mode) +{ + struct cyapa_gen5_cmd_states *gen5_pip = &cyapa->cmd_states.gen5; + int error; + + if (!cmd || !cmd_len) + return -EINVAL; + + /* Commands must be serialized. */ + error = mutex_lock_interruptible(&gen5_pip->cmd_lock); + if (error) + return error; + + gen5_pip->resp_sort_func = func; + gen5_pip->resp_data = resp_data; + gen5_pip->resp_len = resp_len; + + if (cmd_len >= GEN5_MIN_APP_CMD_LENGTH && + cmd[4] == GEN5_APP_CMD_REPORT_ID) { + /* Application command */ + gen5_pip->in_progress_cmd = cmd[6] & 0x7f; + } else if (cmd_len >= GEN5_MIN_BL_CMD_LENGTH && + cmd[4] == GEN5_BL_CMD_REPORT_ID) { + /* Bootloader command */ + gen5_pip->in_progress_cmd = cmd[7]; + } + + /* Send command data, wait and read output response data's length. */ + if (irq_mode) { + gen5_pip->is_irq_mode = true; + error = cyapa_do_i2c_pip_cmd_irq_sync(cyapa, cmd, cmd_len, + timeout); + if (error == -ETIMEDOUT && resp_data && + resp_len && *resp_len != 0 && func) { + /* + * For some old version, there was no interrupt for + * the command response data, so need to poll here + * to try to get the response data. + */ + error = cyapa_empty_pip_output_data(cyapa, + resp_data, resp_len, func); + if (error || *resp_len == 0) + error = error ? error : -ETIMEDOUT; + } + } else { + gen5_pip->is_irq_mode = false; + error = cyapa_do_i2c_pip_cmd_polling(cyapa, cmd, cmd_len, + resp_data, resp_len, timeout, func); + } + + gen5_pip->resp_sort_func = NULL; + gen5_pip->resp_data = NULL; + gen5_pip->resp_len = NULL; + gen5_pip->in_progress_cmd = TSG_INVALID_CMD; + + mutex_unlock(&gen5_pip->cmd_lock); + return error; +} + +static bool cyapa_gen5_sort_tsg_pip_bl_resp_data(struct cyapa *cyapa, + u8 *data, int len) +{ + if (!data || len < GEN5_MIN_BL_RESP_LENGTH) + return false; + + /* Bootloader input report id 30h */ + if (data[GEN5_RESP_REPORT_ID_OFFSET] == GEN5_BL_RESP_REPORT_ID && + data[GEN5_RESP_RSVD_OFFSET] == GEN5_RESP_RSVD_KEY && + data[GEN5_RESP_BL_SOP_OFFSET] == GEN5_SOP_KEY) + return true; + + return false; +} + +static bool cyapa_gen5_sort_tsg_pip_app_resp_data(struct cyapa *cyapa, + u8 *data, int len) +{ + struct cyapa_gen5_cmd_states *gen5_pip = &cyapa->cmd_states.gen5; + int resp_len; + + if (!data || len < GEN5_MIN_APP_RESP_LENGTH) + return false; + + if (data[GEN5_RESP_REPORT_ID_OFFSET] == GEN5_APP_RESP_REPORT_ID && + data[GEN5_RESP_RSVD_OFFSET] == GEN5_RESP_RSVD_KEY) { + resp_len = get_unaligned_le16(&data[GEN5_RESP_LENGTH_OFFSET]); + if (GET_GEN5_CMD_CODE(data[GEN5_RESP_APP_CMD_OFFSET]) == 0x00 && + resp_len == GEN5_UNSUPPORTED_CMD_RESP_LENGTH && + data[5] == gen5_pip->in_progress_cmd) { + /* Unsupported command code */ + return false; + } else if (GET_GEN5_CMD_CODE(data[GEN5_RESP_APP_CMD_OFFSET]) == + gen5_pip->in_progress_cmd) { + /* Correct command response received */ + return true; + } + } + + return false; +} + +static bool cyapa_gen5_sort_application_launch_data(struct cyapa *cyapa, + u8 *buf, int len) +{ + if (buf == NULL || len < GEN5_RESP_LENGTH_SIZE) + return false; + + /* + * After reset or power on, trackpad device always sets to 0x00 0x00 + * to indicate a reset or power on event. + */ + if (buf[0] == 0 && buf[1] == 0) + return true; + + return false; +} + +static bool cyapa_gen5_sort_hid_descriptor_data(struct cyapa *cyapa, + u8 *buf, int len) +{ + int resp_len; + int max_output_len; + + /* Check hid descriptor. */ + if (len != GEN5_HID_DESCRIPTOR_SIZE) + return false; + + resp_len = get_unaligned_le16(&buf[GEN5_RESP_LENGTH_OFFSET]); + max_output_len = get_unaligned_le16(&buf[16]); + if (resp_len == GEN5_HID_DESCRIPTOR_SIZE) { + if (buf[GEN5_RESP_REPORT_ID_OFFSET] == GEN5_BL_HID_REPORT_ID && + max_output_len == GEN5_BL_MAX_OUTPUT_LENGTH) { + /* BL mode HID Descriptor */ + return true; + } else if ((buf[GEN5_RESP_REPORT_ID_OFFSET] == + GEN5_APP_HID_REPORT_ID) && + max_output_len == GEN5_APP_MAX_OUTPUT_LENGTH) { + /* APP mode HID Descriptor */ + return true; + } + } + + return false; +} + +static bool cyapa_gen5_sort_deep_sleep_data(struct cyapa *cyapa, + u8 *buf, int len) +{ + if (len == GEN5_DEEP_SLEEP_RESP_LENGTH && + buf[GEN5_RESP_REPORT_ID_OFFSET] == + GEN5_APP_DEEP_SLEEP_REPORT_ID && + (buf[4] & GEN5_DEEP_SLEEP_OPCODE_MASK) == + GEN5_DEEP_SLEEP_OPCODE) + return true; + return false; +} + +static int gen5_idle_state_parse(struct cyapa *cyapa) +{ + u8 resp_data[GEN5_HID_DESCRIPTOR_SIZE]; + int max_output_len; + int length; + u8 cmd[2]; + int ret; + int error; + + /* + * Dump all buffered data firstly for the situation + * when the trackpad is just power on the cyapa go here. + */ + cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL); + + memset(resp_data, 0, sizeof(resp_data)); + ret = cyapa_i2c_pip_read(cyapa, resp_data, 3); + if (ret != 3) + return ret < 0 ? ret : -EIO; + + length = get_unaligned_le16(&resp_data[GEN5_RESP_LENGTH_OFFSET]); + if (length == GEN5_RESP_LENGTH_SIZE) { + /* Normal state of Gen5 with no data to respose */ + cyapa->gen = CYAPA_GEN5; + + cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL); + + /* Read description from trackpad device */ + cmd[0] = 0x01; + cmd[1] = 0x00; + length = GEN5_HID_DESCRIPTOR_SIZE; + error = cyapa_i2c_pip_cmd_irq_sync(cyapa, + cmd, GEN5_RESP_LENGTH_SIZE, + resp_data, &length, + 300, + cyapa_gen5_sort_hid_descriptor_data, + false); + if (error) + return error; + + length = get_unaligned_le16( + &resp_data[GEN5_RESP_LENGTH_OFFSET]); + max_output_len = get_unaligned_le16(&resp_data[16]); + if ((length == GEN5_HID_DESCRIPTOR_SIZE || + length == GEN5_RESP_LENGTH_SIZE) && + (resp_data[GEN5_RESP_REPORT_ID_OFFSET] == + GEN5_BL_HID_REPORT_ID) && + max_output_len == GEN5_BL_MAX_OUTPUT_LENGTH) { + /* BL mode HID Description read */ + cyapa->state = CYAPA_STATE_GEN5_BL; + } else if ((length == GEN5_HID_DESCRIPTOR_SIZE || + length == GEN5_RESP_LENGTH_SIZE) && + (resp_data[GEN5_RESP_REPORT_ID_OFFSET] == + GEN5_APP_HID_REPORT_ID) && + max_output_len == GEN5_APP_MAX_OUTPUT_LENGTH) { + /* APP mode HID Description read */ + cyapa->state = CYAPA_STATE_GEN5_APP; + } else { + /* Should not happen!!! */ + cyapa->state = CYAPA_STATE_NO_DEVICE; + } + } + + return 0; +} + +static int gen5_hid_description_header_parse(struct cyapa *cyapa, u8 *reg_data) +{ + int length; + u8 resp_data[32]; + int max_output_len; + int ret; + + /* 0x20 0x00 0xF7 is Gen5 Application HID Description Header; + * 0x20 0x00 0xFF is Gen5 Booloader HID Description Header. + * + * Must read HID Description content through out, + * otherwise Gen5 trackpad cannot response next command + * or report any touch or button data. + */ + ret = cyapa_i2c_pip_read(cyapa, resp_data, + GEN5_HID_DESCRIPTOR_SIZE); + if (ret != GEN5_HID_DESCRIPTOR_SIZE) + return ret < 0 ? ret : -EIO; + length = get_unaligned_le16(&resp_data[GEN5_RESP_LENGTH_OFFSET]); + max_output_len = get_unaligned_le16(&resp_data[16]); + if (length == GEN5_RESP_LENGTH_SIZE) { + if (reg_data[GEN5_RESP_REPORT_ID_OFFSET] == + GEN5_BL_HID_REPORT_ID) { + /* + * BL mode HID Description has been previously + * read out. + */ + cyapa->gen = CYAPA_GEN5; + cyapa->state = CYAPA_STATE_GEN5_BL; + } else { + /* + * APP mode HID Description has been previously + * read out. + */ + cyapa->gen = CYAPA_GEN5; + cyapa->state = CYAPA_STATE_GEN5_APP; + } + } else if (length == GEN5_HID_DESCRIPTOR_SIZE && + resp_data[2] == GEN5_BL_HID_REPORT_ID && + max_output_len == GEN5_BL_MAX_OUTPUT_LENGTH) { + /* BL mode HID Description read. */ + cyapa->gen = CYAPA_GEN5; + cyapa->state = CYAPA_STATE_GEN5_BL; + } else if (length == GEN5_HID_DESCRIPTOR_SIZE && + (resp_data[GEN5_RESP_REPORT_ID_OFFSET] == + GEN5_APP_HID_REPORT_ID) && + max_output_len == GEN5_APP_MAX_OUTPUT_LENGTH) { + /* APP mode HID Description read. */ + cyapa->gen = CYAPA_GEN5; + cyapa->state = CYAPA_STATE_GEN5_APP; + } else { + /* Should not happen!!! */ + cyapa->state = CYAPA_STATE_NO_DEVICE; + } + + return 0; +} + +static int gen5_report_data_header_parse(struct cyapa *cyapa, u8 *reg_data) +{ + int length; + + length = get_unaligned_le16(®_data[GEN5_RESP_LENGTH_OFFSET]); + switch (reg_data[GEN5_RESP_REPORT_ID_OFFSET]) { + case GEN5_TOUCH_REPORT_ID: + if (length < GEN5_TOUCH_REPORT_HEAD_SIZE || + length > GEN5_TOUCH_REPORT_MAX_SIZE) + return -EINVAL; + break; + case GEN5_BTN_REPORT_ID: + case GEN5_OLD_PUSH_BTN_REPORT_ID: + case GEN5_PUSH_BTN_REPORT_ID: + if (length < GEN5_BTN_REPORT_HEAD_SIZE || + length > GEN5_BTN_REPORT_MAX_SIZE) + return -EINVAL; + break; + case GEN5_WAKEUP_EVENT_REPORT_ID: + if (length != GEN5_WAKEUP_EVENT_SIZE) + return -EINVAL; + break; + default: + return -EINVAL; + } + + cyapa->gen = CYAPA_GEN5; + cyapa->state = CYAPA_STATE_GEN5_APP; + return 0; +} + +static int gen5_cmd_resp_header_parse(struct cyapa *cyapa, u8 *reg_data) +{ + struct cyapa_gen5_cmd_states *gen5_pip = &cyapa->cmd_states.gen5; + int length; + int ret; + + /* + * Must read report data through out, + * otherwise Gen5 trackpad cannot response next command + * or report any touch or button data. + */ + length = get_unaligned_le16(®_data[GEN5_RESP_LENGTH_OFFSET]); + ret = cyapa_i2c_pip_read(cyapa, gen5_pip->empty_buf, length); + if (ret != length) + return ret < 0 ? ret : -EIO; + + if (length == GEN5_RESP_LENGTH_SIZE) { + /* Previous command has read the data through out. */ + if (reg_data[GEN5_RESP_REPORT_ID_OFFSET] == + GEN5_BL_RESP_REPORT_ID) { + /* Gen5 BL command response data detected */ + cyapa->gen = CYAPA_GEN5; + cyapa->state = CYAPA_STATE_GEN5_BL; + } else { + /* Gen5 APP command response data detected */ + cyapa->gen = CYAPA_GEN5; + cyapa->state = CYAPA_STATE_GEN5_APP; + } + } else if ((gen5_pip->empty_buf[GEN5_RESP_REPORT_ID_OFFSET] == + GEN5_BL_RESP_REPORT_ID) && + (gen5_pip->empty_buf[GEN5_RESP_RSVD_OFFSET] == + GEN5_RESP_RSVD_KEY) && + (gen5_pip->empty_buf[GEN5_RESP_BL_SOP_OFFSET] == + GEN5_SOP_KEY) && + (gen5_pip->empty_buf[length - 1] == + GEN5_EOP_KEY)) { + /* Gen5 BL command response data detected */ + cyapa->gen = CYAPA_GEN5; + cyapa->state = CYAPA_STATE_GEN5_BL; + } else if (gen5_pip->empty_buf[GEN5_RESP_REPORT_ID_OFFSET] == + GEN5_APP_RESP_REPORT_ID && + gen5_pip->empty_buf[GEN5_RESP_RSVD_OFFSET] == + GEN5_RESP_RSVD_KEY) { + /* Gen5 APP command response data detected */ + cyapa->gen = CYAPA_GEN5; + cyapa->state = CYAPA_STATE_GEN5_APP; + } else { + /* Should not happen!!! */ + cyapa->state = CYAPA_STATE_NO_DEVICE; + } + + return 0; +} + +static int cyapa_gen5_state_parse(struct cyapa *cyapa, u8 *reg_data, int len) +{ + int length; + + if (!reg_data || len < 3) + return -EINVAL; + + cyapa->state = CYAPA_STATE_NO_DEVICE; + + /* Parse based on Gen5 characteristic registers and bits */ + length = get_unaligned_le16(®_data[GEN5_RESP_LENGTH_OFFSET]); + if (length == 0 || length == GEN5_RESP_LENGTH_SIZE) { + gen5_idle_state_parse(cyapa); + } else if (length == GEN5_HID_DESCRIPTOR_SIZE && + (reg_data[2] == GEN5_BL_HID_REPORT_ID || + reg_data[2] == GEN5_APP_HID_REPORT_ID)) { + gen5_hid_description_header_parse(cyapa, reg_data); + } else if ((length == GEN5_APP_REPORT_DESCRIPTOR_SIZE || + length == GEN5_APP_CONTRACT_REPORT_DESCRIPTOR_SIZE) && + reg_data[2] == GEN5_APP_REPORT_DESCRIPTOR_ID) { + /* 0xEE 0x00 0xF6 is Gen5 APP report description header. */ + cyapa->gen = CYAPA_GEN5; + cyapa->state = CYAPA_STATE_GEN5_APP; + } else if (length == GEN5_BL_REPORT_DESCRIPTOR_SIZE && + reg_data[2] == GEN5_BL_REPORT_DESCRIPTOR_ID) { + /* 0x1D 0x00 0xFE is Gen5 BL report descriptior header. */ + cyapa->gen = CYAPA_GEN5; + cyapa->state = CYAPA_STATE_GEN5_BL; + } else if (reg_data[2] == GEN5_TOUCH_REPORT_ID || + reg_data[2] == GEN5_BTN_REPORT_ID || + reg_data[2] == GEN5_OLD_PUSH_BTN_REPORT_ID || + reg_data[2] == GEN5_PUSH_BTN_REPORT_ID || + reg_data[2] == GEN5_WAKEUP_EVENT_REPORT_ID) { + gen5_report_data_header_parse(cyapa, reg_data); + } else if (reg_data[2] == GEN5_BL_RESP_REPORT_ID || + reg_data[2] == GEN5_APP_RESP_REPORT_ID) { + gen5_cmd_resp_header_parse(cyapa, reg_data); + } + + if (cyapa->gen == CYAPA_GEN5) { + /* + * Must read the content (e.g.: report description and so on) + * from trackpad device throughout. Otherwise, + * Gen5 trackpad cannot response to next command or + * report any touch or button data later. + */ + cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL); + + if (cyapa->state == CYAPA_STATE_GEN5_APP || + cyapa->state == CYAPA_STATE_GEN5_BL) + return 0; + } + + return -EAGAIN; +} + +static int cyapa_gen5_bl_initiate(struct cyapa *cyapa, + const struct firmware *fw) +{ + struct cyapa_tsg_bin_image *image; + struct gen5_bl_cmd_head *bl_cmd_head; + struct gen5_bl_packet_start *bl_packet_start; + struct gen5_bl_initiate_cmd_data *cmd_data; + struct gen5_bl_packet_end *bl_packet_end; + u8 cmd[CYAPA_TSG_MAX_CMD_SIZE]; + int cmd_len; + u16 cmd_data_len; + u16 cmd_crc = 0; + u16 meta_data_crc = 0; + u8 resp_data[11]; + int resp_len; + int records_num; + u8 *data; + int error; + + /* Try to dump all buffered report data before any send command. */ + cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL); + + memset(cmd, 0, CYAPA_TSG_MAX_CMD_SIZE); + bl_cmd_head = (struct gen5_bl_cmd_head *)cmd; + cmd_data_len = CYAPA_TSG_BL_KEY_SIZE + CYAPA_TSG_FLASH_MAP_BLOCK_SIZE; + cmd_len = sizeof(struct gen5_bl_cmd_head) + cmd_data_len + + sizeof(struct gen5_bl_packet_end); + + put_unaligned_le16(GEN5_OUTPUT_REPORT_ADDR, &bl_cmd_head->addr); + put_unaligned_le16(cmd_len - 2, &bl_cmd_head->length); + bl_cmd_head->report_id = GEN5_BL_CMD_REPORT_ID; + + bl_packet_start = &bl_cmd_head->packet_start; + bl_packet_start->sop = GEN5_SOP_KEY; + bl_packet_start->cmd_code = GEN5_BL_CMD_INITIATE_BL; + /* 8 key bytes and 128 bytes block size */ + put_unaligned_le16(cmd_data_len, &bl_packet_start->data_length); + + cmd_data = (struct gen5_bl_initiate_cmd_data *)bl_cmd_head->data; + memcpy(cmd_data->key, cyapa_gen5_bl_cmd_key, CYAPA_TSG_BL_KEY_SIZE); + + /* Copy 60 bytes Meta Data Row Parameters */ + image = (struct cyapa_tsg_bin_image *)fw->data; + records_num = (fw->size - sizeof(struct cyapa_tsg_bin_image_head)) / + sizeof(struct cyapa_tsg_bin_image_data_record); + /* APP_INTEGRITY row is always the last row block */ + data = image->records[records_num - 1].record_data; + memcpy(cmd_data->metadata_raw_parameter, data, + CYAPA_TSG_FLASH_MAP_METADATA_SIZE); + + meta_data_crc = crc_itu_t(0xffff, cmd_data->metadata_raw_parameter, + CYAPA_TSG_FLASH_MAP_METADATA_SIZE); + put_unaligned_le16(meta_data_crc, &cmd_data->metadata_crc); + + bl_packet_end = (struct gen5_bl_packet_end *)(bl_cmd_head->data + + cmd_data_len); + cmd_crc = crc_itu_t(0xffff, (u8 *)bl_packet_start, + sizeof(struct gen5_bl_packet_start) + cmd_data_len); + put_unaligned_le16(cmd_crc, &bl_packet_end->crc); + bl_packet_end->eop = GEN5_EOP_KEY; + + resp_len = sizeof(resp_data); + error = cyapa_i2c_pip_cmd_irq_sync(cyapa, + cmd, cmd_len, + resp_data, &resp_len, 12000, + cyapa_gen5_sort_tsg_pip_bl_resp_data, true); + if (error || resp_len != GEN5_BL_INITIATE_RESP_LEN || + resp_data[2] != GEN5_BL_RESP_REPORT_ID || + !GEN5_CMD_COMPLETE_SUCCESS(resp_data[5])) + return error ? error : -EAGAIN; + + return 0; +} + +static bool cyapa_gen5_sort_bl_exit_data(struct cyapa *cyapa, u8 *buf, int len) +{ + if (buf == NULL || len < GEN5_RESP_LENGTH_SIZE) + return false; + + if (buf[0] == 0 && buf[1] == 0) + return true; + + /* Exit bootloader failed for some reason. */ + if (len == GEN5_BL_FAIL_EXIT_RESP_LEN && + buf[GEN5_RESP_REPORT_ID_OFFSET] == + GEN5_BL_RESP_REPORT_ID && + buf[GEN5_RESP_RSVD_OFFSET] == GEN5_RESP_RSVD_KEY && + buf[GEN5_RESP_BL_SOP_OFFSET] == GEN5_SOP_KEY && + buf[10] == GEN5_EOP_KEY) + return true; + + return false; +} + +static int cyapa_gen5_bl_exit(struct cyapa *cyapa) +{ + + u8 bl_gen5_bl_exit[] = { 0x04, 0x00, + 0x0B, 0x00, 0x40, 0x00, 0x01, 0x3b, 0x00, 0x00, + 0x20, 0xc7, 0x17 + }; + u8 resp_data[11]; + int resp_len; + int error; + + resp_len = sizeof(resp_data); + error = cyapa_i2c_pip_cmd_irq_sync(cyapa, + bl_gen5_bl_exit, sizeof(bl_gen5_bl_exit), + resp_data, &resp_len, + 5000, cyapa_gen5_sort_bl_exit_data, false); + if (error) + return error; + + if (resp_len == GEN5_BL_FAIL_EXIT_RESP_LEN || + resp_data[GEN5_RESP_REPORT_ID_OFFSET] == + GEN5_BL_RESP_REPORT_ID) + return -EAGAIN; + + if (resp_data[0] == 0x00 && resp_data[1] == 0x00) + return 0; + + return -ENODEV; +} + +static int cyapa_gen5_bl_enter(struct cyapa *cyapa) +{ + u8 cmd[] = { 0x04, 0x00, 0x05, 0x00, 0x2F, 0x00, 0x01 }; + u8 resp_data[2]; + int resp_len; + int error; + + error = cyapa_poll_state(cyapa, 500); + if (error < 0) + return error; + if (cyapa->gen != CYAPA_GEN5) + return -EINVAL; + + /* Already in Gen5 BL. Skipping exit. */ + if (cyapa->state == CYAPA_STATE_GEN5_BL) + return 0; + + if (cyapa->state != CYAPA_STATE_GEN5_APP) + return -EAGAIN; + + /* Try to dump all buffered report data before any send command. */ + cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL); + + /* + * Send bootloader enter command to trackpad device, + * after enter bootloader, the response data is two bytes of 0x00 0x00. + */ + resp_len = sizeof(resp_data); + memset(resp_data, 0, resp_len); + error = cyapa_i2c_pip_cmd_irq_sync(cyapa, + cmd, sizeof(cmd), + resp_data, &resp_len, + 5000, cyapa_gen5_sort_application_launch_data, + true); + if (error || resp_data[0] != 0x00 || resp_data[1] != 0x00) + return error < 0 ? error : -EAGAIN; + + cyapa->operational = false; + cyapa->state = CYAPA_STATE_GEN5_BL; + return 0; +} + +static int cyapa_gen5_check_fw(struct cyapa *cyapa, const struct firmware *fw) +{ + struct device *dev = &cyapa->client->dev; + const struct cyapa_tsg_bin_image *image = (const void *)fw->data; + const struct cyapa_tsg_bin_image_data_record *app_integrity; + const struct gen5_bl_metadata_row_params *metadata; + size_t flash_records_count; + u32 fw_app_start, fw_upgrade_start; + u16 fw_app_len, fw_upgrade_len; + u16 app_crc; + u16 app_integrity_crc; + int record_index; + int i; + + flash_records_count = (fw->size - + sizeof(struct cyapa_tsg_bin_image_head)) / + sizeof(struct cyapa_tsg_bin_image_data_record); + + /* + * APP_INTEGRITY row is always the last row block, + * and the row id must be 0x01ff. + */ + app_integrity = &image->records[flash_records_count - 1]; + + if (app_integrity->flash_array_id != 0x00 || + get_unaligned_be16(&app_integrity->row_number) != 0x01ff) { + dev_err(dev, "%s: invalid app_integrity data.\n", __func__); + return -EINVAL; + } + + metadata = (const void *)app_integrity->record_data; + + /* Verify app_integrity crc */ + app_integrity_crc = crc_itu_t(0xffff, app_integrity->record_data, + CYAPA_TSG_APP_INTEGRITY_SIZE); + if (app_integrity_crc != get_unaligned_le16(&metadata->metadata_crc)) { + dev_err(dev, "%s: invalid app_integrity crc.\n", __func__); + return -EINVAL; + } + + fw_app_start = get_unaligned_le32(&metadata->app_start); + fw_app_len = get_unaligned_le16(&metadata->app_len); + fw_upgrade_start = get_unaligned_le32(&metadata->upgrade_start); + fw_upgrade_len = get_unaligned_le16(&metadata->upgrade_len); + + if (fw_app_start % CYAPA_TSG_FW_ROW_SIZE || + fw_app_len % CYAPA_TSG_FW_ROW_SIZE || + fw_upgrade_start % CYAPA_TSG_FW_ROW_SIZE || + fw_upgrade_len % CYAPA_TSG_FW_ROW_SIZE) { + dev_err(dev, "%s: invalid image alignment.\n", __func__); + return -EINVAL; + } + + /* + * Verify application image CRC + */ + record_index = fw_app_start / CYAPA_TSG_FW_ROW_SIZE - + CYAPA_TSG_IMG_START_ROW_NUM; + app_crc = 0xffffU; + for (i = 0; i < fw_app_len / CYAPA_TSG_FW_ROW_SIZE; i++) { + const u8 *data = image->records[record_index + i].record_data; + app_crc = crc_itu_t(app_crc, data, CYAPA_TSG_FW_ROW_SIZE); + } + + if (app_crc != get_unaligned_le16(&metadata->app_crc)) { + dev_err(dev, "%s: invalid firmware app crc check.\n", __func__); + return -EINVAL; + } + + return 0; +} + +static int cyapa_gen5_write_fw_block(struct cyapa *cyapa, + struct cyapa_tsg_bin_image_data_record *flash_record) +{ + struct gen5_bl_cmd_head *bl_cmd_head; + struct gen5_bl_packet_start *bl_packet_start; + struct gen5_bl_flash_row_head *flash_row_head; + struct gen5_bl_packet_end *bl_packet_end; + u8 cmd[CYAPA_TSG_MAX_CMD_SIZE]; + u16 cmd_len; + u8 flash_array_id; + u16 flash_row_id; + u16 record_len; + u8 *record_data; + u16 data_len; + u16 crc; + u8 resp_data[11]; + int resp_len; + int error; + + flash_array_id = flash_record->flash_array_id; + flash_row_id = get_unaligned_be16(&flash_record->row_number); + record_len = get_unaligned_be16(&flash_record->record_len); + record_data = flash_record->record_data; + + memset(cmd, 0, CYAPA_TSG_MAX_CMD_SIZE); + bl_cmd_head = (struct gen5_bl_cmd_head *)cmd; + bl_packet_start = &bl_cmd_head->packet_start; + cmd_len = sizeof(struct gen5_bl_cmd_head) + + sizeof(struct gen5_bl_flash_row_head) + + CYAPA_TSG_FLASH_MAP_BLOCK_SIZE + + sizeof(struct gen5_bl_packet_end); + + put_unaligned_le16(GEN5_OUTPUT_REPORT_ADDR, &bl_cmd_head->addr); + /* Don't include 2 bytes register address */ + put_unaligned_le16(cmd_len - 2, &bl_cmd_head->length); + bl_cmd_head->report_id = GEN5_BL_CMD_REPORT_ID; + bl_packet_start->sop = GEN5_SOP_KEY; + bl_packet_start->cmd_code = GEN5_BL_CMD_PROGRAM_VERIFY_ROW; + + /* 1 (Flash Array ID) + 2 (Flash Row ID) + 128 (flash data) */ + data_len = sizeof(struct gen5_bl_flash_row_head) + record_len; + put_unaligned_le16(data_len, &bl_packet_start->data_length); + + flash_row_head = (struct gen5_bl_flash_row_head *)bl_cmd_head->data; + flash_row_head->flash_array_id = flash_array_id; + put_unaligned_le16(flash_row_id, &flash_row_head->flash_row_id); + memcpy(flash_row_head->flash_data, record_data, record_len); + + bl_packet_end = (struct gen5_bl_packet_end *)(bl_cmd_head->data + + data_len); + crc = crc_itu_t(0xffff, (u8 *)bl_packet_start, + sizeof(struct gen5_bl_packet_start) + data_len); + put_unaligned_le16(crc, &bl_packet_end->crc); + bl_packet_end->eop = GEN5_EOP_KEY; + + resp_len = sizeof(resp_data); + error = cyapa_i2c_pip_cmd_irq_sync(cyapa, cmd, cmd_len, + resp_data, &resp_len, + 500, cyapa_gen5_sort_tsg_pip_bl_resp_data, true); + if (error || resp_len != GEN5_BL_BLOCK_WRITE_RESP_LEN || + resp_data[2] != GEN5_BL_RESP_REPORT_ID || + !GEN5_CMD_COMPLETE_SUCCESS(resp_data[5])) + return error < 0 ? error : -EAGAIN; + + return 0; +} + +static int cyapa_gen5_do_fw_update(struct cyapa *cyapa, + const struct firmware *fw) +{ + struct device *dev = &cyapa->client->dev; + struct cyapa_tsg_bin_image_data_record *flash_record; + struct cyapa_tsg_bin_image *image = + (struct cyapa_tsg_bin_image *)fw->data; + int flash_records_count; + int i; + int error; + + cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL); + + flash_records_count = + (fw->size - sizeof(struct cyapa_tsg_bin_image_head)) / + sizeof(struct cyapa_tsg_bin_image_data_record); + /* + * The last flash row 0x01ff has been written through bl_initiate + * command, so DO NOT write flash 0x01ff to trackpad device. + */ + for (i = 0; i < (flash_records_count - 1); i++) { + flash_record = &image->records[i]; + error = cyapa_gen5_write_fw_block(cyapa, flash_record); + if (error) { + dev_err(dev, "%s: Gen5 FW update aborted: %d\n", + __func__, error); + return error; + } + } + + return 0; +} + +static int cyapa_gen5_change_power_state(struct cyapa *cyapa, u8 power_state) +{ + u8 cmd[8] = { 0x04, 0x00, 0x06, 0x00, 0x2f, 0x00, 0x08, 0x01 }; + u8 resp_data[6]; + int resp_len; + int error; + + cmd[7] = power_state; + resp_len = sizeof(resp_data); + error = cyapa_i2c_pip_cmd_irq_sync(cyapa, cmd, sizeof(cmd), + resp_data, &resp_len, + 500, cyapa_gen5_sort_tsg_pip_app_resp_data, false); + if (error || !VALID_CMD_RESP_HEADER(resp_data, 0x08) || + !GEN5_CMD_COMPLETE_SUCCESS(resp_data[5])) + return error < 0 ? error : -EINVAL; + + return 0; +} + +static int cyapa_gen5_set_interval_time(struct cyapa *cyapa, + u8 parameter_id, u16 interval_time) +{ + struct gen5_app_cmd_head *app_cmd_head; + struct gen5_app_set_parameter_data *parameter_data; + u8 cmd[CYAPA_TSG_MAX_CMD_SIZE]; + int cmd_len; + u8 resp_data[7]; + int resp_len; + u8 parameter_size; + int error; + + memset(cmd, 0, CYAPA_TSG_MAX_CMD_SIZE); + app_cmd_head = (struct gen5_app_cmd_head *)cmd; + parameter_data = (struct gen5_app_set_parameter_data *) + app_cmd_head->parameter_data; + cmd_len = sizeof(struct gen5_app_cmd_head) + + sizeof(struct gen5_app_set_parameter_data); + + switch (parameter_id) { + case GEN5_PARAMETER_ACT_INTERVL_ID: + parameter_size = GEN5_PARAMETER_ACT_INTERVL_SIZE; + break; + case GEN5_PARAMETER_ACT_LFT_INTERVL_ID: + parameter_size = GEN5_PARAMETER_ACT_LFT_INTERVL_SIZE; + break; + case GEN5_PARAMETER_LP_INTRVL_ID: + parameter_size = GEN5_PARAMETER_LP_INTRVL_SIZE; + break; + default: + return -EINVAL; + } + + put_unaligned_le16(GEN5_OUTPUT_REPORT_ADDR, &app_cmd_head->addr); + /* + * Don't include unused parameter value bytes and + * 2 bytes register address. + */ + put_unaligned_le16(cmd_len - (4 - parameter_size) - 2, + &app_cmd_head->length); + app_cmd_head->report_id = GEN5_APP_CMD_REPORT_ID; + app_cmd_head->cmd_code = GEN5_CMD_SET_PARAMETER; + parameter_data->parameter_id = parameter_id; + parameter_data->parameter_size = parameter_size; + put_unaligned_le32((u32)interval_time, ¶meter_data->value); + resp_len = sizeof(resp_data); + error = cyapa_i2c_pip_cmd_irq_sync(cyapa, cmd, cmd_len, + resp_data, &resp_len, + 500, cyapa_gen5_sort_tsg_pip_app_resp_data, false); + if (error || resp_data[5] != parameter_id || + resp_data[6] != parameter_size || + !VALID_CMD_RESP_HEADER(resp_data, GEN5_CMD_SET_PARAMETER)) + return error < 0 ? error : -EINVAL; + + return 0; +} + +static int cyapa_gen5_get_interval_time(struct cyapa *cyapa, + u8 parameter_id, u16 *interval_time) +{ + struct gen5_app_cmd_head *app_cmd_head; + struct gen5_app_get_parameter_data *parameter_data; + u8 cmd[CYAPA_TSG_MAX_CMD_SIZE]; + int cmd_len; + u8 resp_data[11]; + int resp_len; + u8 parameter_size; + u16 mask, i; + int error; + + memset(cmd, 0, CYAPA_TSG_MAX_CMD_SIZE); + app_cmd_head = (struct gen5_app_cmd_head *)cmd; + parameter_data = (struct gen5_app_get_parameter_data *) + app_cmd_head->parameter_data; + cmd_len = sizeof(struct gen5_app_cmd_head) + + sizeof(struct gen5_app_get_parameter_data); + + *interval_time = 0; + switch (parameter_id) { + case GEN5_PARAMETER_ACT_INTERVL_ID: + parameter_size = GEN5_PARAMETER_ACT_INTERVL_SIZE; + break; + case GEN5_PARAMETER_ACT_LFT_INTERVL_ID: + parameter_size = GEN5_PARAMETER_ACT_LFT_INTERVL_SIZE; + break; + case GEN5_PARAMETER_LP_INTRVL_ID: + parameter_size = GEN5_PARAMETER_LP_INTRVL_SIZE; + break; + default: + return -EINVAL; + } + + put_unaligned_le16(GEN5_HID_DESCRIPTOR_ADDR, &app_cmd_head->addr); + /* Don't include 2 bytes register address */ + put_unaligned_le16(cmd_len - 2, &app_cmd_head->length); + app_cmd_head->report_id = GEN5_APP_CMD_REPORT_ID; + app_cmd_head->cmd_code = GEN5_CMD_GET_PARAMETER; + parameter_data->parameter_id = parameter_id; + + resp_len = sizeof(resp_data); + error = cyapa_i2c_pip_cmd_irq_sync(cyapa, cmd, cmd_len, + resp_data, &resp_len, + 500, cyapa_gen5_sort_tsg_pip_app_resp_data, false); + if (error || resp_data[5] != parameter_id || resp_data[6] == 0 || + !VALID_CMD_RESP_HEADER(resp_data, GEN5_CMD_GET_PARAMETER)) + return error < 0 ? error : -EINVAL; + + mask = 0; + for (i = 0; i < parameter_size; i++) + mask |= (0xff << (i * 8)); + *interval_time = get_unaligned_le16(&resp_data[7]) & mask; + + return 0; +} + +static int cyapa_gen5_disable_pip_report(struct cyapa *cyapa) +{ + struct gen5_app_cmd_head *app_cmd_head; + u8 cmd[10]; + u8 resp_data[7]; + int resp_len; + int error; + + memset(cmd, 0, sizeof(cmd)); + app_cmd_head = (struct gen5_app_cmd_head *)cmd; + + put_unaligned_le16(GEN5_HID_DESCRIPTOR_ADDR, &app_cmd_head->addr); + put_unaligned_le16(sizeof(cmd) - 2, &app_cmd_head->length); + app_cmd_head->report_id = GEN5_APP_CMD_REPORT_ID; + app_cmd_head->cmd_code = GEN5_CMD_SET_PARAMETER; + app_cmd_head->parameter_data[0] = GEN5_PARAMETER_DISABLE_PIP_REPORT; + app_cmd_head->parameter_data[1] = 0x01; + app_cmd_head->parameter_data[2] = 0x01; + resp_len = sizeof(resp_data); + error = cyapa_i2c_pip_cmd_irq_sync(cyapa, cmd, sizeof(cmd), + resp_data, &resp_len, + 500, cyapa_gen5_sort_tsg_pip_app_resp_data, false); + if (error || resp_data[5] != GEN5_PARAMETER_DISABLE_PIP_REPORT || + !VALID_CMD_RESP_HEADER(resp_data, GEN5_CMD_SET_PARAMETER) || + resp_data[6] != 0x01) + return error < 0 ? error : -EINVAL; + + return 0; +} + +static int cyapa_gen5_deep_sleep(struct cyapa *cyapa, u8 state) +{ + u8 cmd[] = { 0x05, 0x00, 0x00, 0x08}; + u8 resp_data[5]; + int resp_len; + int error; + + cmd[2] = state & GEN5_DEEP_SLEEP_STATE_MASK; + resp_len = sizeof(resp_data); + error = cyapa_i2c_pip_cmd_irq_sync(cyapa, cmd, sizeof(cmd), + resp_data, &resp_len, + 500, cyapa_gen5_sort_deep_sleep_data, false); + if (error || ((resp_data[3] & GEN5_DEEP_SLEEP_STATE_MASK) != state)) + return -EINVAL; + + return 0; +} + +static int cyapa_gen5_set_power_mode(struct cyapa *cyapa, + u8 power_mode, u16 sleep_time) +{ + struct device *dev = &cyapa->client->dev; + u8 power_state; + int error; + + if (cyapa->state != CYAPA_STATE_GEN5_APP) + return 0; + + /* Dump all the report data before do power mode commmands. */ + cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL); + + if (GEN5_DEV_GET_PWR_STATE(cyapa) == UNINIT_PWR_MODE) { + /* + * Assume TP in deep sleep mode when driver is loaded, + * avoid driver unload and reload command IO issue caused by TP + * has been set into deep sleep mode when unloading. + */ + GEN5_DEV_SET_PWR_STATE(cyapa, PWR_MODE_OFF); + } + + if (GEN5_DEV_UNINIT_SLEEP_TIME(cyapa) && + GEN5_DEV_GET_PWR_STATE(cyapa) != PWR_MODE_OFF) + if (cyapa_gen5_get_interval_time(cyapa, + GEN5_PARAMETER_LP_INTRVL_ID, + &cyapa->dev_sleep_time) != 0) + GEN5_DEV_SET_SLEEP_TIME(cyapa, UNINIT_SLEEP_TIME); + + if (GEN5_DEV_GET_PWR_STATE(cyapa) == power_mode) { + if (power_mode == PWR_MODE_OFF || + power_mode == PWR_MODE_FULL_ACTIVE || + power_mode == PWR_MODE_BTN_ONLY || + GEN5_DEV_GET_SLEEP_TIME(cyapa) == sleep_time) { + /* Has in correct power mode state, early return. */ + return 0; + } + } + + if (power_mode == PWR_MODE_OFF) { + error = cyapa_gen5_deep_sleep(cyapa, GEN5_DEEP_SLEEP_STATE_OFF); + if (error) { + dev_err(dev, "enter deep sleep fail: %d\n", error); + return error; + } + + GEN5_DEV_SET_PWR_STATE(cyapa, PWR_MODE_OFF); + return 0; + } + + /* + * When trackpad in power off mode, it cannot change to other power + * state directly, must be wake up from sleep firstly, then + * continue to do next power sate change. + */ + if (GEN5_DEV_GET_PWR_STATE(cyapa) == PWR_MODE_OFF) { + error = cyapa_gen5_deep_sleep(cyapa, GEN5_DEEP_SLEEP_STATE_ON); + if (error) { + dev_err(dev, "deep sleep wake fail: %d\n", error); + return error; + } + } + + if (power_mode == PWR_MODE_FULL_ACTIVE) { + error = cyapa_gen5_change_power_state(cyapa, + GEN5_POWER_STATE_ACTIVE); + if (error) { + dev_err(dev, "change to active fail: %d\n", error); + return error; + } + + GEN5_DEV_SET_PWR_STATE(cyapa, PWR_MODE_FULL_ACTIVE); + } else if (power_mode == PWR_MODE_BTN_ONLY) { + error = cyapa_gen5_change_power_state(cyapa, + GEN5_POWER_STATE_BTN_ONLY); + if (error) { + dev_err(dev, "fail to button only mode: %d\n", error); + return error; + } + + GEN5_DEV_SET_PWR_STATE(cyapa, PWR_MODE_BTN_ONLY); + } else { + /* + * Continue to change power mode even failed to set + * interval time, it won't affect the power mode change. + * except the sleep interval time is not correct. + */ + if (GEN5_DEV_UNINIT_SLEEP_TIME(cyapa) || + sleep_time != GEN5_DEV_GET_SLEEP_TIME(cyapa)) + if (cyapa_gen5_set_interval_time(cyapa, + GEN5_PARAMETER_LP_INTRVL_ID, + sleep_time) == 0) + GEN5_DEV_SET_SLEEP_TIME(cyapa, sleep_time); + + if (sleep_time <= GEN5_POWER_READY_MAX_INTRVL_TIME) + power_state = GEN5_POWER_STATE_READY; + else + power_state = GEN5_POWER_STATE_IDLE; + error = cyapa_gen5_change_power_state(cyapa, power_state); + if (error) { + dev_err(dev, "set power state to 0x%02x failed: %d\n", + power_state, error); + return error; + } + + /* + * Disable pip report for a little time, firmware will + * re-enable it automatically. It's used to fix the issue + * that trackpad unable to report signal to wake system up + * in the special situation that system is in suspending, and + * at the same time, user touch trackpad to wake system up. + * This function can avoid the data to be buffured when system + * is suspending which may cause interrput line unable to be + * asserted again. + */ + cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL); + cyapa_gen5_disable_pip_report(cyapa); + + GEN5_DEV_SET_PWR_STATE(cyapa, + cyapa_sleep_time_to_pwr_cmd(sleep_time)); + } + + return 0; +} + +static int cyapa_gen5_resume_scanning(struct cyapa *cyapa) +{ + u8 cmd[] = { 0x04, 0x00, 0x05, 0x00, 0x2f, 0x00, 0x04 }; + u8 resp_data[6]; + int resp_len; + int error; + + /* Try to dump all buffered data before doing command. */ + cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL); + + resp_len = sizeof(resp_data); + error = cyapa_i2c_pip_cmd_irq_sync(cyapa, + cmd, sizeof(cmd), + resp_data, &resp_len, + 500, cyapa_gen5_sort_tsg_pip_app_resp_data, true); + if (error || !VALID_CMD_RESP_HEADER(resp_data, 0x04)) + return -EINVAL; + + /* Try to dump all buffered data when resuming scanning. */ + cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL); + + return 0; +} + +static int cyapa_gen5_suspend_scanning(struct cyapa *cyapa) +{ + u8 cmd[] = { 0x04, 0x00, 0x05, 0x00, 0x2f, 0x00, 0x03 }; + u8 resp_data[6]; + int resp_len; + int error; + + /* Try to dump all buffered data before doing command. */ + cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL); + + resp_len = sizeof(resp_data); + error = cyapa_i2c_pip_cmd_irq_sync(cyapa, + cmd, sizeof(cmd), + resp_data, &resp_len, + 500, cyapa_gen5_sort_tsg_pip_app_resp_data, true); + if (error || !VALID_CMD_RESP_HEADER(resp_data, 0x03)) + return -EINVAL; + + /* Try to dump all buffered data when suspending scanning. */ + cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL); + + return 0; +} + +static int cyapa_gen5_calibrate_pwcs(struct cyapa *cyapa, + u8 calibrate_sensing_mode_type) +{ + struct gen5_app_cmd_head *app_cmd_head; + u8 cmd[8]; + u8 resp_data[6]; + int resp_len; + int error; + + /* Try to dump all buffered data before doing command. */ + cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL); + + memset(cmd, 0, sizeof(cmd)); + app_cmd_head = (struct gen5_app_cmd_head *)cmd; + put_unaligned_le16(GEN5_OUTPUT_REPORT_ADDR, &app_cmd_head->addr); + put_unaligned_le16(sizeof(cmd) - 2, &app_cmd_head->length); + app_cmd_head->report_id = GEN5_APP_CMD_REPORT_ID; + app_cmd_head->cmd_code = GEN5_CMD_CALIBRATE; + app_cmd_head->parameter_data[0] = calibrate_sensing_mode_type; + resp_len = sizeof(resp_data); + error = cyapa_i2c_pip_cmd_irq_sync(cyapa, + cmd, sizeof(cmd), + resp_data, &resp_len, + 5000, cyapa_gen5_sort_tsg_pip_app_resp_data, true); + if (error || !VALID_CMD_RESP_HEADER(resp_data, GEN5_CMD_CALIBRATE) || + !GEN5_CMD_COMPLETE_SUCCESS(resp_data[5])) + return error < 0 ? error : -EAGAIN; + + return 0; +} + +static ssize_t cyapa_gen5_do_calibrate(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct cyapa *cyapa = dev_get_drvdata(dev); + int error, calibrate_error; + + /* 1. Suspend Scanning*/ + error = cyapa_gen5_suspend_scanning(cyapa); + if (error) + return error; + + /* 2. Do mutual capacitance fine calibrate. */ + calibrate_error = cyapa_gen5_calibrate_pwcs(cyapa, + CYAPA_SENSING_MODE_MUTUAL_CAP_FINE); + if (calibrate_error) + goto resume_scanning; + + /* 3. Do self capacitance calibrate. */ + calibrate_error = cyapa_gen5_calibrate_pwcs(cyapa, + CYAPA_SENSING_MODE_SELF_CAP); + if (calibrate_error) + goto resume_scanning; + +resume_scanning: + /* 4. Resume Scanning*/ + error = cyapa_gen5_resume_scanning(cyapa); + if (error || calibrate_error) + return error ? error : calibrate_error; + + return count; +} + +static s32 twos_complement_to_s32(s32 value, int num_bits) +{ + if (value >> (num_bits - 1)) + value |= -1 << num_bits; + return value; +} + +static s32 cyapa_parse_structure_data(u8 data_format, u8 *buf, int buf_len) +{ + int data_size; + bool big_endian; + bool unsigned_type; + s32 value; + + data_size = (data_format & 0x07); + big_endian = ((data_format & 0x10) == 0x00); + unsigned_type = ((data_format & 0x20) == 0x00); + + if (buf_len < data_size) + return 0; + + switch (data_size) { + case 1: + value = buf[0]; + break; + case 2: + if (big_endian) + value = get_unaligned_be16(buf); + else + value = get_unaligned_le16(buf); + break; + case 4: + if (big_endian) + value = get_unaligned_be32(buf); + else + value = get_unaligned_le32(buf); + break; + default: + /* Should not happen, just as default case here. */ + value = 0; + break; + } + + if (!unsigned_type) + value = twos_complement_to_s32(value, data_size * 8); + + return value; +} + +static void cyapa_gen5_guess_electrodes(struct cyapa *cyapa, + int *electrodes_rx, int *electrodes_tx) +{ + if (cyapa->electrodes_rx != 0) { + *electrodes_rx = cyapa->electrodes_rx; + *electrodes_tx = (cyapa->electrodes_x == *electrodes_rx) ? + cyapa->electrodes_y : cyapa->electrodes_x; + } else { + *electrodes_tx = min(cyapa->electrodes_x, cyapa->electrodes_y); + *electrodes_rx = max(cyapa->electrodes_x, cyapa->electrodes_y); + } +} + +/* + * Read all the global mutual or self idac data or mutual or self local PWC + * data based on the @idac_data_type. + * If the input value of @data_size is 0, then means read global mutual or + * self idac data. For read global mutual idac data, @idac_max, @idac_min and + * @idac_ave are in order used to return the max value of global mutual idac + * data, the min value of global mutual idac and the average value of the + * global mutual idac data. For read global self idac data, @idac_max is used + * to return the global self cap idac data in Rx direction, @idac_min is used + * to return the global self cap idac data in Tx direction. @idac_ave is not + * used. + * If the input value of @data_size is not 0, than means read the mutual or + * self local PWC data. The @idac_max, @idac_min and @idac_ave are used to + * return the max, min and average value of the mutual or self local PWC data. + * Note, in order to raed mutual local PWC data, must read invoke this function + * to read the mutual global idac data firstly to set the correct Rx number + * value, otherwise, the read mutual idac and PWC data may not correct. + */ +static int cyapa_gen5_read_idac_data(struct cyapa *cyapa, + u8 cmd_code, u8 idac_data_type, int *data_size, + int *idac_max, int *idac_min, int *idac_ave) +{ + struct gen5_app_cmd_head *cmd_head; + u8 cmd[12]; + u8 resp_data[256]; + int resp_len; + int read_len; + int value; + u16 offset; + int read_elements; + bool read_global_idac; + int sum, count, max_element_cnt; + int tmp_max, tmp_min, tmp_ave, tmp_sum, tmp_count; + int electrodes_rx, electrodes_tx; + int i; + int error; + + if (cmd_code != GEN5_CMD_RETRIEVE_DATA_STRUCTURE || + (idac_data_type != GEN5_RETRIEVE_MUTUAL_PWC_DATA && + idac_data_type != GEN5_RETRIEVE_SELF_CAP_PWC_DATA) || + !data_size || !idac_max || !idac_min || !idac_ave) + return -EINVAL; + + *idac_max = INT_MIN; + *idac_min = INT_MAX; + sum = count = tmp_count = 0; + electrodes_rx = electrodes_tx = 0; + if (*data_size == 0) { + /* + * Read global idac values firstly. + * Currently, no idac data exceed 4 bytes. + */ + read_global_idac = true; + offset = 0; + *data_size = 4; + tmp_max = INT_MIN; + tmp_min = INT_MAX; + tmp_ave = tmp_sum = tmp_count = 0; + + if (idac_data_type == GEN5_RETRIEVE_MUTUAL_PWC_DATA) { + if (cyapa->aligned_electrodes_rx == 0) { + cyapa_gen5_guess_electrodes(cyapa, + &electrodes_rx, &electrodes_tx); + cyapa->aligned_electrodes_rx = + (electrodes_rx + 3) & ~3u; + } + max_element_cnt = + (cyapa->aligned_electrodes_rx + 7) & ~7u; + } else { + max_element_cnt = 2; + } + } else { + read_global_idac = false; + if (*data_size > 4) + *data_size = 4; + /* Calculate the start offset in bytes of local PWC data. */ + if (idac_data_type == GEN5_RETRIEVE_MUTUAL_PWC_DATA) { + offset = cyapa->aligned_electrodes_rx * (*data_size); + if (cyapa->electrodes_rx == cyapa->electrodes_x) + electrodes_tx = cyapa->electrodes_y; + else + electrodes_tx = cyapa->electrodes_x; + max_element_cnt = ((cyapa->aligned_electrodes_rx + 7) & + ~7u) * electrodes_tx; + } else if (idac_data_type == GEN5_RETRIEVE_SELF_CAP_PWC_DATA) { + offset = 2; + max_element_cnt = cyapa->electrodes_x + + cyapa->electrodes_y; + max_element_cnt = (max_element_cnt + 3) & ~3u; + } + } + + memset(cmd, 0, sizeof(cmd)); + cmd_head = (struct gen5_app_cmd_head *)cmd; + put_unaligned_le16(GEN5_OUTPUT_REPORT_ADDR, &cmd_head->addr); + put_unaligned_le16(sizeof(cmd) - 2, &cmd_head->length); + cmd_head->report_id = GEN5_APP_CMD_REPORT_ID; + cmd_head->cmd_code = cmd_code; + do { + read_elements = (256 - GEN5_RESP_DATA_STRUCTURE_OFFSET) / + (*data_size); + read_elements = min(read_elements, max_element_cnt - count); + read_len = read_elements * (*data_size); + + put_unaligned_le16(offset, &cmd_head->parameter_data[0]); + put_unaligned_le16(read_len, &cmd_head->parameter_data[2]); + cmd_head->parameter_data[4] = idac_data_type; + resp_len = GEN5_RESP_DATA_STRUCTURE_OFFSET + read_len; + error = cyapa_i2c_pip_cmd_irq_sync(cyapa, + cmd, sizeof(cmd), + resp_data, &resp_len, + 500, cyapa_gen5_sort_tsg_pip_app_resp_data, + true); + if (error || resp_len < GEN5_RESP_DATA_STRUCTURE_OFFSET || + !VALID_CMD_RESP_HEADER(resp_data, cmd_code) || + !GEN5_CMD_COMPLETE_SUCCESS(resp_data[5]) || + resp_data[6] != idac_data_type) + return (error < 0) ? error : -EAGAIN; + read_len = get_unaligned_le16(&resp_data[7]); + if (read_len == 0) + break; + + *data_size = (resp_data[9] & GEN5_PWC_DATA_ELEMENT_SIZE_MASK); + if (read_len < *data_size) + return -EINVAL; + + if (read_global_idac && + idac_data_type == GEN5_RETRIEVE_SELF_CAP_PWC_DATA) { + /* Rx's self global idac data. */ + *idac_max = cyapa_parse_structure_data( + resp_data[9], + &resp_data[GEN5_RESP_DATA_STRUCTURE_OFFSET], + *data_size); + /* Tx's self global idac data. */ + *idac_min = cyapa_parse_structure_data( + resp_data[9], + &resp_data[GEN5_RESP_DATA_STRUCTURE_OFFSET + + *data_size], + *data_size); + break; + } + + /* Read mutual global idac or local mutual/self PWC data. */ + offset += read_len; + for (i = 10; i < (read_len + GEN5_RESP_DATA_STRUCTURE_OFFSET); + i += *data_size) { + value = cyapa_parse_structure_data(resp_data[9], + &resp_data[i], *data_size); + *idac_min = min(value, *idac_min); + *idac_max = max(value, *idac_max); + + if (idac_data_type == GEN5_RETRIEVE_MUTUAL_PWC_DATA && + tmp_count < cyapa->aligned_electrodes_rx && + read_global_idac) { + /* + * The value gap betwen global and local mutual + * idac data must bigger than 50%. + * Normally, global value bigger than 50, + * local values less than 10. + */ + if (!tmp_ave || value > tmp_ave / 2) { + tmp_min = min(value, tmp_min); + tmp_max = max(value, tmp_max); + tmp_sum += value; + tmp_count++; + + tmp_ave = tmp_sum / tmp_count; + } + } + + sum += value; + count++; + + if (count >= max_element_cnt) + goto out; + } + } while (true); + +out: + *idac_ave = count ? (sum / count) : 0; + + if (read_global_idac && + idac_data_type == GEN5_RETRIEVE_MUTUAL_PWC_DATA) { + if (tmp_count == 0) + return 0; + + if (tmp_count == cyapa->aligned_electrodes_rx) { + cyapa->electrodes_rx = cyapa->electrodes_rx ? + cyapa->electrodes_rx : electrodes_rx; + } else if (tmp_count == electrodes_rx) { + cyapa->electrodes_rx = cyapa->electrodes_rx ? + cyapa->electrodes_rx : electrodes_rx; + cyapa->aligned_electrodes_rx = electrodes_rx; + } else { + cyapa->electrodes_rx = cyapa->electrodes_rx ? + cyapa->electrodes_rx : electrodes_tx; + cyapa->aligned_electrodes_rx = tmp_count; + } + + *idac_min = tmp_min; + *idac_max = tmp_max; + *idac_ave = tmp_ave; + } + + return 0; +} + +static int cyapa_gen5_read_mutual_idac_data(struct cyapa *cyapa, + int *gidac_mutual_max, int *gidac_mutual_min, int *gidac_mutual_ave, + int *lidac_mutual_max, int *lidac_mutual_min, int *lidac_mutual_ave) +{ + int data_size; + int error; + + *gidac_mutual_max = *gidac_mutual_min = *gidac_mutual_ave = 0; + *lidac_mutual_max = *lidac_mutual_min = *lidac_mutual_ave = 0; + + data_size = 0; + error = cyapa_gen5_read_idac_data(cyapa, + GEN5_CMD_RETRIEVE_DATA_STRUCTURE, + GEN5_RETRIEVE_MUTUAL_PWC_DATA, + &data_size, + gidac_mutual_max, gidac_mutual_min, gidac_mutual_ave); + if (error) + return error; + + error = cyapa_gen5_read_idac_data(cyapa, + GEN5_CMD_RETRIEVE_DATA_STRUCTURE, + GEN5_RETRIEVE_MUTUAL_PWC_DATA, + &data_size, + lidac_mutual_max, lidac_mutual_min, lidac_mutual_ave); + return error; +} + +static int cyapa_gen5_read_self_idac_data(struct cyapa *cyapa, + int *gidac_self_rx, int *gidac_self_tx, + int *lidac_self_max, int *lidac_self_min, int *lidac_self_ave) +{ + int data_size; + int error; + + *gidac_self_rx = *gidac_self_tx = 0; + *lidac_self_max = *lidac_self_min = *lidac_self_ave = 0; + + data_size = 0; + error = cyapa_gen5_read_idac_data(cyapa, + GEN5_CMD_RETRIEVE_DATA_STRUCTURE, + GEN5_RETRIEVE_SELF_CAP_PWC_DATA, + &data_size, + lidac_self_max, lidac_self_min, lidac_self_ave); + if (error) + return error; + *gidac_self_rx = *lidac_self_max; + *gidac_self_tx = *lidac_self_min; + + error = cyapa_gen5_read_idac_data(cyapa, + GEN5_CMD_RETRIEVE_DATA_STRUCTURE, + GEN5_RETRIEVE_SELF_CAP_PWC_DATA, + &data_size, + lidac_self_max, lidac_self_min, lidac_self_ave); + return error; +} + +static ssize_t cyapa_gen5_execute_panel_scan(struct cyapa *cyapa) +{ + struct gen5_app_cmd_head *app_cmd_head; + u8 cmd[7]; + u8 resp_data[6]; + int resp_len; + int error; + + memset(cmd, 0, sizeof(cmd)); + app_cmd_head = (struct gen5_app_cmd_head *)cmd; + put_unaligned_le16(GEN5_OUTPUT_REPORT_ADDR, &app_cmd_head->addr); + put_unaligned_le16(sizeof(cmd) - 2, &app_cmd_head->length); + app_cmd_head->report_id = GEN5_APP_CMD_REPORT_ID; + app_cmd_head->cmd_code = GEN5_CMD_EXECUTE_PANEL_SCAN; + resp_len = sizeof(resp_data); + error = cyapa_i2c_pip_cmd_irq_sync(cyapa, + cmd, sizeof(cmd), + resp_data, &resp_len, + 500, cyapa_gen5_sort_tsg_pip_app_resp_data, true); + if (error || resp_len != sizeof(resp_data) || + !VALID_CMD_RESP_HEADER(resp_data, + GEN5_CMD_EXECUTE_PANEL_SCAN) || + !GEN5_CMD_COMPLETE_SUCCESS(resp_data[5])) + return error ? error : -EAGAIN; + + return 0; +} + +static int cyapa_gen5_read_panel_scan_raw_data(struct cyapa *cyapa, + u8 cmd_code, u8 raw_data_type, int raw_data_max_num, + int *raw_data_max, int *raw_data_min, int *raw_data_ave, + u8 *buffer) +{ + struct gen5_app_cmd_head *app_cmd_head; + struct gen5_retrieve_panel_scan_data *panel_sacn_data; + u8 cmd[12]; + u8 resp_data[256]; /* Max bytes can transfer one time. */ + int resp_len; + int read_elements; + int read_len; + u16 offset; + s32 value; + int sum, count; + int data_size; + s32 *intp; + int i; + int error; + + if (cmd_code != GEN5_CMD_RETRIEVE_PANEL_SCAN || + (raw_data_type > GEN5_PANEL_SCAN_SELF_DIFFCOUNT) || + !raw_data_max || !raw_data_min || !raw_data_ave) + return -EINVAL; + + intp = (s32 *)buffer; + *raw_data_max = INT_MIN; + *raw_data_min = INT_MAX; + sum = count = 0; + offset = 0; + /* Assume max element size is 4 currently. */ + read_elements = (256 - GEN5_RESP_DATA_STRUCTURE_OFFSET) / 4; + read_len = read_elements * 4; + app_cmd_head = (struct gen5_app_cmd_head *)cmd; + put_unaligned_le16(GEN5_OUTPUT_REPORT_ADDR, &app_cmd_head->addr); + put_unaligned_le16(sizeof(cmd) - 2, &app_cmd_head->length); + app_cmd_head->report_id = GEN5_APP_CMD_REPORT_ID; + app_cmd_head->cmd_code = cmd_code; + panel_sacn_data = (struct gen5_retrieve_panel_scan_data *) + app_cmd_head->parameter_data; + do { + put_unaligned_le16(offset, &panel_sacn_data->read_offset); + put_unaligned_le16(read_elements, + &panel_sacn_data->read_elements); + panel_sacn_data->data_id = raw_data_type; + + resp_len = GEN5_RESP_DATA_STRUCTURE_OFFSET + read_len; + error = cyapa_i2c_pip_cmd_irq_sync(cyapa, + cmd, sizeof(cmd), + resp_data, &resp_len, + 500, cyapa_gen5_sort_tsg_pip_app_resp_data, true); + if (error || resp_len < GEN5_RESP_DATA_STRUCTURE_OFFSET || + !VALID_CMD_RESP_HEADER(resp_data, cmd_code) || + !GEN5_CMD_COMPLETE_SUCCESS(resp_data[5]) || + resp_data[6] != raw_data_type) + return error ? error : -EAGAIN; + + read_elements = get_unaligned_le16(&resp_data[7]); + if (read_elements == 0) + break; + + data_size = (resp_data[9] & GEN5_PWC_DATA_ELEMENT_SIZE_MASK); + offset += read_elements; + if (read_elements) { + for (i = GEN5_RESP_DATA_STRUCTURE_OFFSET; + i < (read_elements * data_size + + GEN5_RESP_DATA_STRUCTURE_OFFSET); + i += data_size) { + value = cyapa_parse_structure_data(resp_data[9], + &resp_data[i], data_size); + *raw_data_min = min(value, *raw_data_min); + *raw_data_max = max(value, *raw_data_max); + + if (intp) + put_unaligned_le32(value, &intp[count]); + + sum += value; + count++; + + } + } + + if (count >= raw_data_max_num) + break; + + read_elements = (sizeof(resp_data) - + GEN5_RESP_DATA_STRUCTURE_OFFSET) / data_size; + read_len = read_elements * data_size; + } while (true); + + *raw_data_ave = count ? (sum / count) : 0; + + return 0; +} + +static ssize_t cyapa_gen5_show_baseline(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct cyapa *cyapa = dev_get_drvdata(dev); + int gidac_mutual_max, gidac_mutual_min, gidac_mutual_ave; + int lidac_mutual_max, lidac_mutual_min, lidac_mutual_ave; + int gidac_self_rx, gidac_self_tx; + int lidac_self_max, lidac_self_min, lidac_self_ave; + int raw_cap_mutual_max, raw_cap_mutual_min, raw_cap_mutual_ave; + int raw_cap_self_max, raw_cap_self_min, raw_cap_self_ave; + int mutual_diffdata_max, mutual_diffdata_min, mutual_diffdata_ave; + int self_diffdata_max, self_diffdata_min, self_diffdata_ave; + int mutual_baseline_max, mutual_baseline_min, mutual_baseline_ave; + int self_baseline_max, self_baseline_min, self_baseline_ave; + int error, resume_error; + int size; + + if (cyapa->state != CYAPA_STATE_GEN5_APP) + return -EBUSY; + + /* 1. Suspend Scanning*/ + error = cyapa_gen5_suspend_scanning(cyapa); + if (error) + return error; + + /* 2. Read global and local mutual IDAC data. */ + gidac_self_rx = gidac_self_tx = 0; + error = cyapa_gen5_read_mutual_idac_data(cyapa, + &gidac_mutual_max, &gidac_mutual_min, + &gidac_mutual_ave, &lidac_mutual_max, + &lidac_mutual_min, &lidac_mutual_ave); + if (error) + goto resume_scanning; + + /* 3. Read global and local self IDAC data. */ + error = cyapa_gen5_read_self_idac_data(cyapa, + &gidac_self_rx, &gidac_self_tx, + &lidac_self_max, &lidac_self_min, + &lidac_self_ave); + if (error) + goto resume_scanning; + + /* 4. Execuate panel scan. It must be executed before read data. */ + error = cyapa_gen5_execute_panel_scan(cyapa); + if (error) + goto resume_scanning; + + /* 5. Retrieve panel scan, mutual cap raw data. */ + error = cyapa_gen5_read_panel_scan_raw_data(cyapa, + GEN5_CMD_RETRIEVE_PANEL_SCAN, + GEN5_PANEL_SCAN_MUTUAL_RAW_DATA, + cyapa->electrodes_x * cyapa->electrodes_y, + &raw_cap_mutual_max, &raw_cap_mutual_min, + &raw_cap_mutual_ave, + NULL); + if (error) + goto resume_scanning; + + /* 6. Retrieve panel scan, self cap raw data. */ + error = cyapa_gen5_read_panel_scan_raw_data(cyapa, + GEN5_CMD_RETRIEVE_PANEL_SCAN, + GEN5_PANEL_SCAN_SELF_RAW_DATA, + cyapa->electrodes_x + cyapa->electrodes_y, + &raw_cap_self_max, &raw_cap_self_min, + &raw_cap_self_ave, + NULL); + if (error) + goto resume_scanning; + + /* 7. Retrieve panel scan, mutual cap diffcount raw data. */ + error = cyapa_gen5_read_panel_scan_raw_data(cyapa, + GEN5_CMD_RETRIEVE_PANEL_SCAN, + GEN5_PANEL_SCAN_MUTUAL_DIFFCOUNT, + cyapa->electrodes_x * cyapa->electrodes_y, + &mutual_diffdata_max, &mutual_diffdata_min, + &mutual_diffdata_ave, + NULL); + if (error) + goto resume_scanning; + + /* 8. Retrieve panel scan, self cap diffcount raw data. */ + error = cyapa_gen5_read_panel_scan_raw_data(cyapa, + GEN5_CMD_RETRIEVE_PANEL_SCAN, + GEN5_PANEL_SCAN_SELF_DIFFCOUNT, + cyapa->electrodes_x + cyapa->electrodes_y, + &self_diffdata_max, &self_diffdata_min, + &self_diffdata_ave, + NULL); + if (error) + goto resume_scanning; + + /* 9. Retrieve panel scan, mutual cap baseline raw data. */ + error = cyapa_gen5_read_panel_scan_raw_data(cyapa, + GEN5_CMD_RETRIEVE_PANEL_SCAN, + GEN5_PANEL_SCAN_MUTUAL_BASELINE, + cyapa->electrodes_x * cyapa->electrodes_y, + &mutual_baseline_max, &mutual_baseline_min, + &mutual_baseline_ave, + NULL); + if (error) + goto resume_scanning; + + /* 10. Retrieve panel scan, self cap baseline raw data. */ + error = cyapa_gen5_read_panel_scan_raw_data(cyapa, + GEN5_CMD_RETRIEVE_PANEL_SCAN, + GEN5_PANEL_SCAN_SELF_BASELINE, + cyapa->electrodes_x + cyapa->electrodes_y, + &self_baseline_max, &self_baseline_min, + &self_baseline_ave, + NULL); + if (error) + goto resume_scanning; + +resume_scanning: + /* 11. Resume Scanning*/ + resume_error = cyapa_gen5_resume_scanning(cyapa); + if (resume_error || error) + return resume_error ? resume_error : error; + + /* 12. Output data strings */ + size = scnprintf(buf, PAGE_SIZE, "%d %d %d %d %d %d %d %d %d %d %d ", + gidac_mutual_min, gidac_mutual_max, gidac_mutual_ave, + lidac_mutual_min, lidac_mutual_max, lidac_mutual_ave, + gidac_self_rx, gidac_self_tx, + lidac_self_min, lidac_self_max, lidac_self_ave); + size += scnprintf(buf + size, PAGE_SIZE - size, + "%d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d\n", + raw_cap_mutual_min, raw_cap_mutual_max, raw_cap_mutual_ave, + raw_cap_self_min, raw_cap_self_max, raw_cap_self_ave, + mutual_diffdata_min, mutual_diffdata_max, mutual_diffdata_ave, + self_diffdata_min, self_diffdata_max, self_diffdata_ave, + mutual_baseline_min, mutual_baseline_max, mutual_baseline_ave, + self_baseline_min, self_baseline_max, self_baseline_ave); + return size; +} + +static bool cyapa_gen5_sort_system_info_data(struct cyapa *cyapa, + u8 *buf, int len) +{ + /* Check the report id and command code */ + if (VALID_CMD_RESP_HEADER(buf, 0x02)) + return true; + + return false; +} + +static int cyapa_gen5_bl_query_data(struct cyapa *cyapa) +{ + u8 bl_query_data_cmd[] = { 0x04, 0x00, 0x0b, 0x00, 0x40, 0x00, + 0x01, 0x3c, 0x00, 0x00, 0xb0, 0x42, 0x17 + }; + u8 resp_data[GEN5_BL_READ_APP_INFO_RESP_LEN]; + int resp_len; + int error; + + resp_len = GEN5_BL_READ_APP_INFO_RESP_LEN; + error = cyapa_i2c_pip_cmd_irq_sync(cyapa, + bl_query_data_cmd, sizeof(bl_query_data_cmd), + resp_data, &resp_len, + 500, cyapa_gen5_sort_tsg_pip_bl_resp_data, false); + if (error || resp_len != GEN5_BL_READ_APP_INFO_RESP_LEN || + !GEN5_CMD_COMPLETE_SUCCESS(resp_data[5])) + return error ? error : -EIO; + + memcpy(&cyapa->product_id[0], &resp_data[8], 5); + cyapa->product_id[5] = '-'; + memcpy(&cyapa->product_id[6], &resp_data[13], 6); + cyapa->product_id[12] = '-'; + memcpy(&cyapa->product_id[13], &resp_data[19], 2); + cyapa->product_id[15] = '\0'; + + cyapa->fw_maj_ver = resp_data[22]; + cyapa->fw_min_ver = resp_data[23]; + + return 0; +} + +static int cyapa_gen5_get_query_data(struct cyapa *cyapa) +{ + u8 get_system_information[] = { + 0x04, 0x00, 0x05, 0x00, 0x2f, 0x00, 0x02 + }; + u8 resp_data[71]; + int resp_len; + u16 product_family; + int error; + + resp_len = sizeof(resp_data); + error = cyapa_i2c_pip_cmd_irq_sync(cyapa, + get_system_information, sizeof(get_system_information), + resp_data, &resp_len, + 2000, cyapa_gen5_sort_system_info_data, false); + if (error || resp_len < sizeof(resp_data)) + return error ? error : -EIO; + + product_family = get_unaligned_le16(&resp_data[7]); + if ((product_family & GEN5_PRODUCT_FAMILY_MASK) != + GEN5_PRODUCT_FAMILY_TRACKPAD) + return -EINVAL; + + cyapa->fw_maj_ver = resp_data[15]; + cyapa->fw_min_ver = resp_data[16]; + + cyapa->electrodes_x = resp_data[52]; + cyapa->electrodes_y = resp_data[53]; + + cyapa->physical_size_x = get_unaligned_le16(&resp_data[54]) / 100; + cyapa->physical_size_y = get_unaligned_le16(&resp_data[56]) / 100; + + cyapa->max_abs_x = get_unaligned_le16(&resp_data[58]); + cyapa->max_abs_y = get_unaligned_le16(&resp_data[60]); + + cyapa->max_z = get_unaligned_le16(&resp_data[62]); + + cyapa->x_origin = resp_data[64] & 0x01; + cyapa->y_origin = resp_data[65] & 0x01; + + cyapa->btn_capability = (resp_data[70] << 3) & CAPABILITY_BTN_MASK; + + memcpy(&cyapa->product_id[0], &resp_data[33], 5); + cyapa->product_id[5] = '-'; + memcpy(&cyapa->product_id[6], &resp_data[38], 6); + cyapa->product_id[12] = '-'; + memcpy(&cyapa->product_id[13], &resp_data[44], 2); + cyapa->product_id[15] = '\0'; + + if (!cyapa->electrodes_x || !cyapa->electrodes_y || + !cyapa->physical_size_x || !cyapa->physical_size_y || + !cyapa->max_abs_x || !cyapa->max_abs_y || !cyapa->max_z) + return -EINVAL; + + return 0; +} + +static int cyapa_gen5_do_operational_check(struct cyapa *cyapa) +{ + struct device *dev = &cyapa->client->dev; + int error; + + if (cyapa->gen != CYAPA_GEN5) + return -ENODEV; + + switch (cyapa->state) { + case CYAPA_STATE_GEN5_BL: + error = cyapa_gen5_bl_exit(cyapa); + if (error) { + /* Rry to update trackpad product information. */ + cyapa_gen5_bl_query_data(cyapa); + goto out; + } + + cyapa->state = CYAPA_STATE_GEN5_APP; + + case CYAPA_STATE_GEN5_APP: + /* + * If trackpad device in deep sleep mode, + * the app command will fail. + * So always try to reset trackpad device to full active when + * the device state is requeried. + */ + error = cyapa_gen5_set_power_mode(cyapa, + PWR_MODE_FULL_ACTIVE, 0); + if (error) + dev_warn(dev, "%s: failed to set power active mode.\n", + __func__); + + /* Get trackpad product information. */ + error = cyapa_gen5_get_query_data(cyapa); + if (error) + goto out; + /* Only support product ID starting with CYTRA */ + if (memcmp(cyapa->product_id, product_id, + strlen(product_id)) != 0) { + dev_err(dev, "%s: unknown product ID (%s)\n", + __func__, cyapa->product_id); + error = -EINVAL; + } + break; + default: + error = -EINVAL; + } + +out: + return error; +} + +/* + * Return false, do not continue process + * Return true, continue process. + */ +static bool cyapa_gen5_irq_cmd_handler(struct cyapa *cyapa) +{ + struct cyapa_gen5_cmd_states *gen5_pip = &cyapa->cmd_states.gen5; + int length; + + if (atomic_read(&gen5_pip->cmd_issued)) { + /* Polling command response data. */ + if (gen5_pip->is_irq_mode == false) + return false; + + /* + * Read out all none command response data. + * these output data may caused by user put finger on + * trackpad when host waiting the command response. + */ + cyapa_i2c_pip_read(cyapa, gen5_pip->irq_cmd_buf, + GEN5_RESP_LENGTH_SIZE); + length = get_unaligned_le16(gen5_pip->irq_cmd_buf); + length = (length <= GEN5_RESP_LENGTH_SIZE) ? + GEN5_RESP_LENGTH_SIZE : length; + if (length > GEN5_RESP_LENGTH_SIZE) + cyapa_i2c_pip_read(cyapa, + gen5_pip->irq_cmd_buf, length); + + if (!(gen5_pip->resp_sort_func && + gen5_pip->resp_sort_func(cyapa, + gen5_pip->irq_cmd_buf, length))) { + /* + * Cover the Gen5 V1 firmware issue. + * The issue is there is no interrut will be + * asserted to notityf host to read a command + * data out when always has finger touch on + * trackpad during the command is issued to + * trackad device. + * This issue has the scenario is that, + * user always has his fingers touched on + * trackpad device when booting/rebooting + * their chrome book. + */ + length = 0; + if (gen5_pip->resp_len) + length = *gen5_pip->resp_len; + cyapa_empty_pip_output_data(cyapa, + gen5_pip->resp_data, + &length, + gen5_pip->resp_sort_func); + if (gen5_pip->resp_len && length != 0) { + *gen5_pip->resp_len = length; + atomic_dec(&gen5_pip->cmd_issued); + complete(&gen5_pip->cmd_ready); + } + return false; + } + + if (gen5_pip->resp_data && gen5_pip->resp_len) { + *gen5_pip->resp_len = (*gen5_pip->resp_len < length) ? + *gen5_pip->resp_len : length; + memcpy(gen5_pip->resp_data, gen5_pip->irq_cmd_buf, + *gen5_pip->resp_len); + } + atomic_dec(&gen5_pip->cmd_issued); + complete(&gen5_pip->cmd_ready); + return false; + } + + return true; +} + +static void cyapa_gen5_report_buttons(struct cyapa *cyapa, + const struct cyapa_gen5_report_data *report_data) +{ + struct input_dev *input = cyapa->input; + u8 buttons = report_data->report_head[GEN5_BUTTONS_OFFSET]; + + buttons = (buttons << CAPABILITY_BTN_SHIFT) & CAPABILITY_BTN_MASK; + + if (cyapa->btn_capability & CAPABILITY_LEFT_BTN_MASK) { + input_report_key(input, BTN_LEFT, + !!(buttons & CAPABILITY_LEFT_BTN_MASK)); + } + if (cyapa->btn_capability & CAPABILITY_MIDDLE_BTN_MASK) { + input_report_key(input, BTN_MIDDLE, + !!(buttons & CAPABILITY_MIDDLE_BTN_MASK)); + } + if (cyapa->btn_capability & CAPABILITY_RIGHT_BTN_MASK) { + input_report_key(input, BTN_RIGHT, + !!(buttons & CAPABILITY_RIGHT_BTN_MASK)); + } + + input_sync(input); +} + +static void cyapa_gen5_report_slot_data(struct cyapa *cyapa, + const struct cyapa_gen5_touch_record *touch) +{ + struct input_dev *input = cyapa->input; + u8 event_id = GEN5_GET_EVENT_ID(touch->touch_tip_event_id); + int slot = GEN5_GET_TOUCH_ID(touch->touch_tip_event_id); + int x, y; + + if (event_id == RECORD_EVENT_LIFTOFF) + return; + + input_mt_slot(input, slot); + input_mt_report_slot_state(input, MT_TOOL_FINGER, true); + x = (touch->x_hi << 8) | touch->x_lo; + if (cyapa->x_origin) + x = cyapa->max_abs_x - x; + input_report_abs(input, ABS_MT_POSITION_X, x); + y = (touch->y_hi << 8) | touch->y_lo; + if (cyapa->y_origin) + y = cyapa->max_abs_y - y; + input_report_abs(input, ABS_MT_POSITION_Y, y); + input_report_abs(input, ABS_MT_PRESSURE, + touch->z); + input_report_abs(input, ABS_MT_TOUCH_MAJOR, + touch->major_axis_len); + input_report_abs(input, ABS_MT_TOUCH_MINOR, + touch->minor_axis_len); + + input_report_abs(input, ABS_MT_WIDTH_MAJOR, + touch->major_tool_len); + input_report_abs(input, ABS_MT_WIDTH_MINOR, + touch->minor_tool_len); + + input_report_abs(input, ABS_MT_ORIENTATION, + touch->orientation); +} + +static void cyapa_gen5_report_touches(struct cyapa *cyapa, + const struct cyapa_gen5_report_data *report_data) +{ + struct input_dev *input = cyapa->input; + unsigned int touch_num; + int i; + + touch_num = report_data->report_head[GEN5_NUMBER_OF_TOUCH_OFFSET] & + GEN5_NUMBER_OF_TOUCH_MASK; + + for (i = 0; i < touch_num; i++) + cyapa_gen5_report_slot_data(cyapa, + &report_data->touch_records[i]); + + input_mt_sync_frame(input); + input_sync(input); +} + +static int cyapa_gen5_irq_handler(struct cyapa *cyapa) +{ + struct device *dev = &cyapa->client->dev; + struct cyapa_gen5_report_data report_data; + int ret; + u8 report_id; + unsigned int report_len; + + if (cyapa->gen != CYAPA_GEN5 || + cyapa->state != CYAPA_STATE_GEN5_APP) { + dev_err(dev, "invalid device state, gen=%d, state=0x%02x\n", + cyapa->gen, cyapa->state); + return -EINVAL; + } + + ret = cyapa_i2c_pip_read(cyapa, (u8 *)&report_data, + GEN5_RESP_LENGTH_SIZE); + if (ret != GEN5_RESP_LENGTH_SIZE) { + dev_err(dev, "failed to read length bytes, (%d)\n", ret); + return -EINVAL; + } + + report_len = get_unaligned_le16( + &report_data.report_head[GEN5_RESP_LENGTH_OFFSET]); + if (report_len < GEN5_RESP_LENGTH_SIZE) { + /* Invliad length or internal reset happened. */ + dev_err(dev, "invalid report_len=%d. bytes: %02x %02x\n", + report_len, report_data.report_head[0], + report_data.report_head[1]); + return -EINVAL; + } + + /* Idle, no data for report. */ + if (report_len == GEN5_RESP_LENGTH_SIZE) + return 0; + + ret = cyapa_i2c_pip_read(cyapa, (u8 *)&report_data, report_len); + if (ret != report_len) { + dev_err(dev, "failed to read %d bytes report data, (%d)\n", + report_len, ret); + return -EINVAL; + } + + report_id = report_data.report_head[GEN5_RESP_REPORT_ID_OFFSET]; + if (report_id == GEN5_WAKEUP_EVENT_REPORT_ID && + report_len == GEN5_WAKEUP_EVENT_SIZE) { + /* + * Device wake event from deep sleep mode for touch. + * This interrupt event is used to wake system up. + */ + return 0; + } else if (report_id != GEN5_TOUCH_REPORT_ID && + report_id != GEN5_BTN_REPORT_ID && + report_id != GEN5_OLD_PUSH_BTN_REPORT_ID && + report_id != GEN5_PUSH_BTN_REPORT_ID) { + /* Running in BL mode or unknown response data read. */ + dev_err(dev, "invalid report_id=0x%02x\n", report_id); + return -EINVAL; + } + + if (report_id == GEN5_TOUCH_REPORT_ID && + (report_len < GEN5_TOUCH_REPORT_HEAD_SIZE || + report_len > GEN5_TOUCH_REPORT_MAX_SIZE)) { + /* Invalid report data length for finger packet. */ + dev_err(dev, "invalid touch packet length=%d\n", report_len); + return 0; + } + + if ((report_id == GEN5_BTN_REPORT_ID || + report_id == GEN5_OLD_PUSH_BTN_REPORT_ID || + report_id == GEN5_PUSH_BTN_REPORT_ID) && + (report_len < GEN5_BTN_REPORT_HEAD_SIZE || + report_len > GEN5_BTN_REPORT_MAX_SIZE)) { + /* Invalid report data length of button packet. */ + dev_err(dev, "invalid button packet length=%d\n", report_len); + return 0; + } + + if (report_id == GEN5_TOUCH_REPORT_ID) + cyapa_gen5_report_touches(cyapa, &report_data); + else + cyapa_gen5_report_buttons(cyapa, &report_data); + + return 0; +} + +static int cyapa_gen5_bl_activate(struct cyapa *cyapa) { return 0; } +static int cyapa_gen5_bl_deactivate(struct cyapa *cyapa) { return 0; } + +const struct cyapa_dev_ops cyapa_gen5_ops = { + .check_fw = cyapa_gen5_check_fw, + .bl_enter = cyapa_gen5_bl_enter, + .bl_initiate = cyapa_gen5_bl_initiate, + .update_fw = cyapa_gen5_do_fw_update, + .bl_activate = cyapa_gen5_bl_activate, + .bl_deactivate = cyapa_gen5_bl_deactivate, + + .show_baseline = cyapa_gen5_show_baseline, + .calibrate_store = cyapa_gen5_do_calibrate, + + .initialize = cyapa_gen5_initialize, + + .state_parse = cyapa_gen5_state_parse, + .operational_check = cyapa_gen5_do_operational_check, + + .irq_handler = cyapa_gen5_irq_handler, + .irq_cmd_handler = cyapa_gen5_irq_cmd_handler, + .sort_empty_output_data = cyapa_empty_pip_output_data, + .set_power_mode = cyapa_gen5_set_power_mode, +}; diff --git a/drivers/input/mouse/cypress_ps2.c b/drivers/input/mouse/cypress_ps2.c index 8af34ffe208b..9118a1861a45 100644 --- a/drivers/input/mouse/cypress_ps2.c +++ b/drivers/input/mouse/cypress_ps2.c @@ -538,7 +538,7 @@ static void cypress_process_packet(struct psmouse *psmouse, bool zero_pkt) pos[i].y = contact->y; } - input_mt_assign_slots(input, slots, pos, n); + input_mt_assign_slots(input, slots, pos, n, 0); for (i = 0; i < n; i++) { contact = &report_data.contacts[i]; diff --git a/drivers/input/mouse/elan_i2c.h b/drivers/input/mouse/elan_i2c.h index 2e838626205f..e100c1b31597 100644 --- a/drivers/input/mouse/elan_i2c.h +++ b/drivers/input/mouse/elan_i2c.h @@ -4,7 +4,6 @@ * Copyright (c) 2013 ELAN Microelectronics Corp. * * Author: 林政維 (Duson Lin) <dusonlin@emc.com.tw> - * Version: 1.5.5 * * Based on cyapa driver: * copyright (c) 2011-2012 Cypress Semiconductor, Inc. @@ -33,8 +32,9 @@ #define ETP_FW_IAP_PAGE_ERR (1 << 5) #define ETP_FW_IAP_INTF_ERR (1 << 4) #define ETP_FW_PAGE_SIZE 64 -#define ETP_FW_PAGE_COUNT 768 -#define ETP_FW_SIZE (ETP_FW_PAGE_SIZE * ETP_FW_PAGE_COUNT) +#define ETP_FW_VAILDPAGE_COUNT 768 +#define ETP_FW_SIGNATURE_SIZE 6 +#define ETP_FW_SIGNATURE_ADDRESS 0xBFFA struct i2c_client; struct completion; diff --git a/drivers/input/mouse/elan_i2c_core.c b/drivers/input/mouse/elan_i2c_core.c index 0cb2be48d537..7ce8bfe22d7e 100644 --- a/drivers/input/mouse/elan_i2c_core.c +++ b/drivers/input/mouse/elan_i2c_core.c @@ -4,7 +4,7 @@ * Copyright (c) 2013 ELAN Microelectronics Corp. * * Author: 林政維 (Duson Lin) <dusonlin@emc.com.tw> - * Version: 1.5.5 + * Version: 1.5.6 * * Based on cyapa driver: * copyright (c) 2011-2012 Cypress Semiconductor, Inc. @@ -40,7 +40,7 @@ #include "elan_i2c.h" #define DRIVER_NAME "elan_i2c" -#define ELAN_DRIVER_VERSION "1.5.5" +#define ELAN_DRIVER_VERSION "1.5.6" #define ETP_PRESSURE_OFFSET 25 #define ETP_MAX_PRESSURE 255 #define ETP_FWIDTH_REDUCE 90 @@ -312,7 +312,7 @@ static int __elan_update_firmware(struct elan_tp_data *data, iap_start_addr = get_unaligned_le16(&fw->data[ETP_IAP_START_ADDR * 2]); boot_page_count = (iap_start_addr * 2) / ETP_FW_PAGE_SIZE; - for (i = boot_page_count; i < ETP_FW_PAGE_COUNT; i++) { + for (i = boot_page_count; i < ETP_FW_VAILDPAGE_COUNT; i++) { u16 checksum = 0; const u8 *page = &fw->data[i * ETP_FW_PAGE_SIZE]; @@ -434,10 +434,11 @@ static ssize_t elan_sysfs_update_fw(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - struct i2c_client *client = to_i2c_client(dev); - struct elan_tp_data *data = i2c_get_clientdata(client); + struct elan_tp_data *data = dev_get_drvdata(dev); const struct firmware *fw; int error; + const u8 *fw_signature; + static const u8 signature[] = {0xAA, 0x55, 0xCC, 0x33, 0xFF, 0xFF}; error = request_firmware(&fw, ETP_FW_NAME, dev); if (error) { @@ -446,10 +447,12 @@ static ssize_t elan_sysfs_update_fw(struct device *dev, return error; } - /* Firmware must be exactly PAGE_NUM * PAGE_SIZE bytes */ - if (fw->size != ETP_FW_SIZE) { - dev_err(dev, "invalid firmware size = %zu, expected %d.\n", - fw->size, ETP_FW_SIZE); + /* Firmware file must match signature data */ + fw_signature = &fw->data[ETP_FW_SIGNATURE_ADDRESS]; + if (memcmp(fw_signature, signature, sizeof(signature)) != 0) { + dev_err(dev, "signature mismatch (expected %*ph, got %*ph)\n", + (int)sizeof(signature), signature, + (int)sizeof(signature), fw_signature); error = -EBADF; goto out_release_fw; } diff --git a/drivers/input/mouse/elan_i2c_i2c.c b/drivers/input/mouse/elan_i2c_i2c.c index 97d4937fc244..029941f861af 100644 --- a/drivers/input/mouse/elan_i2c_i2c.c +++ b/drivers/input/mouse/elan_i2c_i2c.c @@ -4,7 +4,6 @@ * Copyright (c) 2013 ELAN Microelectronics Corp. * * Author: 林政維 (Duson Lin) <dusonlin@emc.com.tw> - * Version: 1.5.5 * * Based on cyapa driver: * copyright (c) 2011-2012 Cypress Semiconductor, Inc. diff --git a/drivers/input/mouse/elan_i2c_smbus.c b/drivers/input/mouse/elan_i2c_smbus.c index 359bf8583d54..06a2bcd1cda2 100644 --- a/drivers/input/mouse/elan_i2c_smbus.c +++ b/drivers/input/mouse/elan_i2c_smbus.c @@ -4,7 +4,6 @@ * Copyright (c) 2013 ELAN Microelectronics Corp. * * Author: 林政維 (Duson Lin) <dusonlin@emc.com.tw> - * Version: 1.5.5 * * Based on cyapa driver: * copyright (c) 2011-2012 Cypress Semiconductor, Inc. @@ -71,7 +70,7 @@ static int elan_smbus_initialize(struct i2c_client *client) /* compare hello packet */ if (memcmp(values, check, ETP_SMBUS_HELLOPACKET_LEN)) { - dev_err(&client->dev, "hello packet fail [%*px]\n", + dev_err(&client->dev, "hello packet fail [%*ph]\n", ETP_SMBUS_HELLOPACKET_LEN, values); return -ENXIO; } diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c index f2b978026407..6e22682c8255 100644 --- a/drivers/input/mouse/elantech.c +++ b/drivers/input/mouse/elantech.c @@ -1097,6 +1097,8 @@ static int elantech_get_resolution_v4(struct psmouse *psmouse, * Asus UX31 0x361f00 20, 15, 0e clickpad * Asus UX32VD 0x361f02 00, 15, 0e clickpad * Avatar AVIU-145A2 0x361f00 ? clickpad + * Fujitsu LIFEBOOK E544 0x470f00 d0, 12, 09 2 hw buttons + * Fujitsu LIFEBOOK E554 0x570f01 40, 14, 0c 2 hw buttons * Fujitsu H730 0x570f00 c0, 14, 0c 3 hw buttons (**) * Gigabyte U2442 0x450f01 58, 17, 0c 2 hw buttons * Lenovo L430 0x350f02 b9, 15, 0c 2 hw buttons (*) @@ -1475,6 +1477,20 @@ static const struct dmi_system_id elantech_dmi_force_crc_enabled[] = { DMI_MATCH(DMI_PRODUCT_NAME, "CELSIUS H730"), }, }, + { + /* Fujitsu LIFEBOOK E554 does not work with crc_enabled == 0 */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), + DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK E554"), + }, + }, + { + /* Fujitsu LIFEBOOK E544 does not work with crc_enabled == 0 */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), + DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK E544"), + }, + }, #endif { } }; @@ -1520,6 +1536,8 @@ static int elantech_set_properties(struct elantech_data *etd) case 7: case 8: case 9: + case 10: + case 13: etd->hw_version = 4; break; default: diff --git a/drivers/input/mouse/focaltech.c b/drivers/input/mouse/focaltech.c index f4d657ee1cc0..fca38ba63bbe 100644 --- a/drivers/input/mouse/focaltech.c +++ b/drivers/input/mouse/focaltech.c @@ -2,6 +2,7 @@ * Focaltech TouchPad PS/2 mouse driver * * Copyright (c) 2014 Red Hat Inc. + * Copyright (c) 2014 Mathias Gottschlag <mgottschlag@gmail.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -13,15 +14,14 @@ * Hans de Goede <hdegoede@redhat.com> */ -/* - * The Focaltech PS/2 touchpad protocol is unknown. This drivers deals with - * detection only, to avoid further detection attempts confusing the touchpad - * this way it at least works in PS/2 mouse compatibility mode. - */ #include <linux/device.h> #include <linux/libps2.h> +#include <linux/input/mt.h> +#include <linux/serio.h> +#include <linux/slab.h> #include "psmouse.h" +#include "focaltech.h" static const char * const focaltech_pnp_ids[] = { "FLT0101", @@ -30,6 +30,12 @@ static const char * const focaltech_pnp_ids[] = { NULL }; +/* + * Even if the kernel is built without support for Focaltech PS/2 touchpads (or + * when the real driver fails to recognize the device), we still have to detect + * them in order to avoid further detection attempts confusing the touchpad. + * This way it at least works in PS/2 mouse compatibility mode. + */ int focaltech_detect(struct psmouse *psmouse, bool set_properties) { if (!psmouse_matches_pnp_id(psmouse, focaltech_pnp_ids)) @@ -37,16 +43,404 @@ int focaltech_detect(struct psmouse *psmouse, bool set_properties) if (set_properties) { psmouse->vendor = "FocalTech"; - psmouse->name = "FocalTech Touchpad in mouse emulation mode"; + psmouse->name = "FocalTech Touchpad"; } return 0; } -int focaltech_init(struct psmouse *psmouse) +static void focaltech_reset(struct psmouse *psmouse) { ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS); psmouse_reset(psmouse); +} + +#ifdef CONFIG_MOUSE_PS2_FOCALTECH + +/* + * Packet types - the numbers are not consecutive, so we might be missing + * something here. + */ +#define FOC_TOUCH 0x3 /* bitmap of active fingers */ +#define FOC_ABS 0x6 /* absolute position of one finger */ +#define FOC_REL 0x9 /* relative position of 1-2 fingers */ + +#define FOC_MAX_FINGERS 5 + +#define FOC_MAX_X 2431 +#define FOC_MAX_Y 1663 + +/* + * Current state of a single finger on the touchpad. + */ +struct focaltech_finger_state { + /* The touchpad has generated a touch event for the finger */ + bool active; + + /* + * The touchpad has sent position data for the finger. The + * flag is 0 when the finger is not active, and there is a + * time between the first touch event for the finger and the + * following absolute position packet for the finger where the + * touchpad has declared the finger to be valid, but we do not + * have any valid position yet. + */ + bool valid; + + /* + * Absolute position (from the bottom left corner) of the + * finger. + */ + unsigned int x; + unsigned int y; +}; + +/* + * Description of the current state of the touchpad hardware. + */ +struct focaltech_hw_state { + /* + * The touchpad tracks the positions of the fingers for us, + * the array indices correspond to the finger indices returned + * in the report packages. + */ + struct focaltech_finger_state fingers[FOC_MAX_FINGERS]; + + /* True if the clickpad has been pressed. */ + bool pressed; +}; + +struct focaltech_data { + unsigned int x_max, y_max; + struct focaltech_hw_state state; +}; + +static void focaltech_report_state(struct psmouse *psmouse) +{ + struct focaltech_data *priv = psmouse->private; + struct focaltech_hw_state *state = &priv->state; + struct input_dev *dev = psmouse->dev; + int i; + + for (i = 0; i < FOC_MAX_FINGERS; i++) { + struct focaltech_finger_state *finger = &state->fingers[i]; + bool active = finger->active && finger->valid; + + input_mt_slot(dev, i); + input_mt_report_slot_state(dev, MT_TOOL_FINGER, active); + if (active) { + input_report_abs(dev, ABS_MT_POSITION_X, finger->x); + input_report_abs(dev, ABS_MT_POSITION_Y, + FOC_MAX_Y - finger->y); + } + } + input_mt_report_pointer_emulation(dev, true); + + input_report_key(psmouse->dev, BTN_LEFT, state->pressed); + input_sync(psmouse->dev); +} + +static void focaltech_process_touch_packet(struct psmouse *psmouse, + unsigned char *packet) +{ + struct focaltech_data *priv = psmouse->private; + struct focaltech_hw_state *state = &priv->state; + unsigned char fingers = packet[1]; + int i; + + state->pressed = (packet[0] >> 4) & 1; + + /* the second byte contains a bitmap of all fingers touching the pad */ + for (i = 0; i < FOC_MAX_FINGERS; i++) { + state->fingers[i].active = fingers & 0x1; + if (!state->fingers[i].active) { + /* + * Even when the finger becomes active again, we still + * will have to wait for the first valid position. + */ + state->fingers[i].valid = false; + } + fingers >>= 1; + } +} + +static void focaltech_process_abs_packet(struct psmouse *psmouse, + unsigned char *packet) +{ + struct focaltech_data *priv = psmouse->private; + struct focaltech_hw_state *state = &priv->state; + unsigned int finger; + + finger = (packet[1] >> 4) - 1; + if (finger >= FOC_MAX_FINGERS) { + psmouse_err(psmouse, "Invalid finger in abs packet: %d\n", + finger); + return; + } + + state->pressed = (packet[0] >> 4) & 1; + + /* + * packet[5] contains some kind of tool size in the most + * significant nibble. 0xff is a special value (latching) that + * signals a large contact area. + */ + if (packet[5] == 0xff) { + state->fingers[finger].valid = false; + return; + } + + state->fingers[finger].x = ((packet[1] & 0xf) << 8) | packet[2]; + state->fingers[finger].y = (packet[3] << 8) | packet[4]; + state->fingers[finger].valid = true; +} + +static void focaltech_process_rel_packet(struct psmouse *psmouse, + unsigned char *packet) +{ + struct focaltech_data *priv = psmouse->private; + struct focaltech_hw_state *state = &priv->state; + int finger1, finger2; + + state->pressed = packet[0] >> 7; + finger1 = ((packet[0] >> 4) & 0x7) - 1; + if (finger1 < FOC_MAX_FINGERS) { + state->fingers[finger1].x += (char)packet[1]; + state->fingers[finger1].y += (char)packet[2]; + } else { + psmouse_err(psmouse, "First finger in rel packet invalid: %d\n", + finger1); + } + + /* + * If there is an odd number of fingers, the last relative + * packet only contains one finger. In this case, the second + * finger index in the packet is 0 (we subtract 1 in the lines + * above to create array indices, so the finger will overflow + * and be above FOC_MAX_FINGERS). + */ + finger2 = ((packet[3] >> 4) & 0x7) - 1; + if (finger2 < FOC_MAX_FINGERS) { + state->fingers[finger2].x += (char)packet[4]; + state->fingers[finger2].y += (char)packet[5]; + } +} + +static void focaltech_process_packet(struct psmouse *psmouse) +{ + unsigned char *packet = psmouse->packet; + + switch (packet[0] & 0xf) { + case FOC_TOUCH: + focaltech_process_touch_packet(psmouse, packet); + break; + + case FOC_ABS: + focaltech_process_abs_packet(psmouse, packet); + break; + + case FOC_REL: + focaltech_process_rel_packet(psmouse, packet); + break; + + default: + psmouse_err(psmouse, "Unknown packet type: %02x\n", packet[0]); + break; + } + + focaltech_report_state(psmouse); +} + +static psmouse_ret_t focaltech_process_byte(struct psmouse *psmouse) +{ + if (psmouse->pktcnt >= 6) { /* Full packet received */ + focaltech_process_packet(psmouse); + return PSMOUSE_FULL_PACKET; + } + + /* + * We might want to do some validation of the data here, but + * we do not know the protocol well enough + */ + return PSMOUSE_GOOD_DATA; +} + +static int focaltech_switch_protocol(struct psmouse *psmouse) +{ + struct ps2dev *ps2dev = &psmouse->ps2dev; + unsigned char param[3]; + + param[0] = 0; + if (ps2_command(ps2dev, param, 0x10f8)) + return -EIO; + + if (ps2_command(ps2dev, param, 0x10f8)) + return -EIO; + + if (ps2_command(ps2dev, param, 0x10f8)) + return -EIO; + + param[0] = 1; + if (ps2_command(ps2dev, param, 0x10f8)) + return -EIO; + + if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETSCALE11)) + return -EIO; + + if (ps2_command(ps2dev, param, PSMOUSE_CMD_ENABLE)) + return -EIO; + + return 0; +} + +static void focaltech_disconnect(struct psmouse *psmouse) +{ + focaltech_reset(psmouse); + kfree(psmouse->private); + psmouse->private = NULL; +} + +static int focaltech_reconnect(struct psmouse *psmouse) +{ + int error; + + focaltech_reset(psmouse); + + error = focaltech_switch_protocol(psmouse); + if (error) { + psmouse_err(psmouse, "Unable to initialize the device\n"); + return error; + } + + return 0; +} + +static void focaltech_set_input_params(struct psmouse *psmouse) +{ + struct input_dev *dev = psmouse->dev; + struct focaltech_data *priv = psmouse->private; + + /* + * Undo part of setup done for us by psmouse core since touchpad + * is not a relative device. + */ + __clear_bit(EV_REL, dev->evbit); + __clear_bit(REL_X, dev->relbit); + __clear_bit(REL_Y, dev->relbit); + __clear_bit(BTN_RIGHT, dev->keybit); + __clear_bit(BTN_MIDDLE, dev->keybit); + + /* + * Now set up our capabilities. + */ + __set_bit(EV_ABS, dev->evbit); + input_set_abs_params(dev, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0); + input_set_abs_params(dev, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0); + input_mt_init_slots(dev, 5, INPUT_MT_POINTER); + __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit); +} + +static int focaltech_read_register(struct ps2dev *ps2dev, int reg, + unsigned char *param) +{ + if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETSCALE11)) + return -EIO; + + param[0] = 0; + if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES)) + return -EIO; + + if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES)) + return -EIO; + + if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES)) + return -EIO; + + param[0] = reg; + if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES)) + return -EIO; + + if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) + return -EIO; + + return 0; +} + +static int focaltech_read_size(struct psmouse *psmouse) +{ + struct ps2dev *ps2dev = &psmouse->ps2dev; + struct focaltech_data *priv = psmouse->private; + char param[3]; + + if (focaltech_read_register(ps2dev, 2, param)) + return -EIO; + + /* not sure whether this is 100% correct */ + priv->x_max = (unsigned char)param[1] * 128; + priv->y_max = (unsigned char)param[2] * 128; + + return 0; +} +int focaltech_init(struct psmouse *psmouse) +{ + struct focaltech_data *priv; + int error; + + psmouse->private = priv = kzalloc(sizeof(struct focaltech_data), + GFP_KERNEL); + if (!priv) + return -ENOMEM; + + focaltech_reset(psmouse); + + error = focaltech_read_size(psmouse); + if (error) { + psmouse_err(psmouse, + "Unable to read the size of the touchpad\n"); + goto fail; + } + + error = focaltech_switch_protocol(psmouse); + if (error) { + psmouse_err(psmouse, "Unable to initialize the device\n"); + goto fail; + } + + focaltech_set_input_params(psmouse); + + psmouse->protocol_handler = focaltech_process_byte; + psmouse->pktsize = 6; + psmouse->disconnect = focaltech_disconnect; + psmouse->reconnect = focaltech_reconnect; + psmouse->cleanup = focaltech_reset; + /* resync is not supported yet */ + psmouse->resync_time = 0; return 0; + +fail: + focaltech_reset(psmouse); + kfree(priv); + return error; } + +bool focaltech_supported(void) +{ + return true; +} + +#else /* CONFIG_MOUSE_PS2_FOCALTECH */ + +int focaltech_init(struct psmouse *psmouse) +{ + focaltech_reset(psmouse); + + return 0; +} + +bool focaltech_supported(void) +{ + return false; +} + +#endif /* CONFIG_MOUSE_PS2_FOCALTECH */ diff --git a/drivers/input/mouse/focaltech.h b/drivers/input/mouse/focaltech.h index 498650c61e28..71870a9b548a 100644 --- a/drivers/input/mouse/focaltech.h +++ b/drivers/input/mouse/focaltech.h @@ -2,6 +2,7 @@ * Focaltech TouchPad PS/2 mouse driver * * Copyright (c) 2014 Red Hat Inc. + * Copyright (c) 2014 Mathias Gottschlag <mgottschlag@gmail.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -18,5 +19,6 @@ int focaltech_detect(struct psmouse *psmouse, bool set_properties); int focaltech_init(struct psmouse *psmouse); +bool focaltech_supported(void); #endif diff --git a/drivers/input/mouse/psmouse-base.c b/drivers/input/mouse/psmouse-base.c index 95a3a6e2faf6..68469feda470 100644 --- a/drivers/input/mouse/psmouse-base.c +++ b/drivers/input/mouse/psmouse-base.c @@ -725,16 +725,19 @@ static int psmouse_extensions(struct psmouse *psmouse, /* Always check for focaltech, this is safe as it uses pnp-id matching */ if (psmouse_do_detect(focaltech_detect, psmouse, set_properties) == 0) { - if (!set_properties || focaltech_init(psmouse) == 0) { - /* - * Not supported yet, use bare protocol. - * Note that we need to also restrict - * psmouse_max_proto so that psmouse_initialize() - * does not try to reset rate and resolution, - * because even that upsets the device. - */ - psmouse_max_proto = PSMOUSE_PS2; - return PSMOUSE_PS2; + if (max_proto > PSMOUSE_IMEX) { + if (!set_properties || focaltech_init(psmouse) == 0) { + if (focaltech_supported()) + return PSMOUSE_FOCALTECH; + /* + * Note that we need to also restrict + * psmouse_max_proto so that psmouse_initialize() + * does not try to reset rate and resolution, + * because even that upsets the device. + */ + psmouse_max_proto = PSMOUSE_PS2; + return PSMOUSE_PS2; + } } } @@ -1063,6 +1066,15 @@ static const struct psmouse_protocol psmouse_protocols[] = { .alias = "cortps", .detect = cortron_detect, }, +#ifdef CONFIG_MOUSE_PS2_FOCALTECH + { + .type = PSMOUSE_FOCALTECH, + .name = "FocalTechPS/2", + .alias = "focaltech", + .detect = focaltech_detect, + .init = focaltech_init, + }, +#endif { .type = PSMOUSE_AUTO, .name = "auto", diff --git a/drivers/input/mouse/psmouse.h b/drivers/input/mouse/psmouse.h index f4cf664c7db3..c2ff137ecbdb 100644 --- a/drivers/input/mouse/psmouse.h +++ b/drivers/input/mouse/psmouse.h @@ -96,6 +96,7 @@ enum psmouse_type { PSMOUSE_FSP, PSMOUSE_SYNAPTICS_RELATIVE, PSMOUSE_CYPRESS, + PSMOUSE_FOCALTECH, PSMOUSE_AUTO /* This one should always be last */ }; diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c index f9472920d986..7e705ee90b86 100644 --- a/drivers/input/mouse/synaptics.c +++ b/drivers/input/mouse/synaptics.c @@ -67,6 +67,9 @@ #define X_MAX_POSITIVE 8176 #define Y_MAX_POSITIVE 8176 +/* maximum ABS_MT_POSITION displacement (in mm) */ +#define DMAX 10 + /***************************************************************************** * Stuff we need even when we do not want native Synaptics support ****************************************************************************/ @@ -135,8 +138,9 @@ static const struct min_max_quirk min_max_pnpid_table[] = { 1232, 5710, 1156, 4696 }, { - (const char * const []){"LEN0034", "LEN0036", "LEN0039", - "LEN2002", "LEN2004", NULL}, + (const char * const []){"LEN0034", "LEN0036", "LEN0037", + "LEN0039", "LEN2002", "LEN2004", + NULL}, 1024, 5112, 2024, 4832 }, { @@ -165,7 +169,7 @@ static const char * const topbuttonpad_pnp_ids[] = { "LEN0034", /* T431s, L440, L540, T540, W540, X1 Carbon 2nd */ "LEN0035", /* X240 */ "LEN0036", /* T440 */ - "LEN0037", + "LEN0037", /* X1 Carbon 2nd */ "LEN0038", "LEN0039", /* T440s */ "LEN0041", @@ -574,14 +578,6 @@ static void synaptics_pt_create(struct psmouse *psmouse) * Functions to interpret the absolute mode packets ****************************************************************************/ -static void synaptics_mt_state_set(struct synaptics_mt_state *state, int count, - int sgm, int agm) -{ - state->count = count; - state->sgm = sgm; - state->agm = agm; -} - static void synaptics_parse_agm(const unsigned char buf[], struct synaptics_data *priv, struct synaptics_hw_state *hw) @@ -600,16 +596,13 @@ static void synaptics_parse_agm(const unsigned char buf[], break; case 2: - /* AGM-CONTACT packet: (count, sgm, agm) */ - synaptics_mt_state_set(&agm->mt_state, buf[1], buf[2], buf[4]); + /* AGM-CONTACT packet: we are only interested in the count */ + priv->agm_count = buf[1]; break; default: break; } - - /* Record that at least one AGM has been received since last SGM */ - priv->agm_pending = true; } static bool is_forcepad; @@ -803,424 +796,68 @@ static void synaptics_report_buttons(struct psmouse *psmouse, input_report_key(dev, BTN_0 + i, hw->ext_buttons & (1 << i)); } -static void synaptics_report_slot(struct input_dev *dev, int slot, - const struct synaptics_hw_state *hw) -{ - input_mt_slot(dev, slot); - input_mt_report_slot_state(dev, MT_TOOL_FINGER, (hw != NULL)); - if (!hw) - return; - - input_report_abs(dev, ABS_MT_POSITION_X, hw->x); - input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(hw->y)); - input_report_abs(dev, ABS_MT_PRESSURE, hw->z); -} - static void synaptics_report_mt_data(struct psmouse *psmouse, - struct synaptics_mt_state *mt_state, - const struct synaptics_hw_state *sgm) + const struct synaptics_hw_state *sgm, + int num_fingers) { struct input_dev *dev = psmouse->dev; struct synaptics_data *priv = psmouse->private; - struct synaptics_hw_state *agm = &priv->agm; - struct synaptics_mt_state *old = &priv->mt_state; + const struct synaptics_hw_state *hw[2] = { sgm, &priv->agm }; + struct input_mt_pos pos[2]; + int slot[2], nsemi, i; - switch (mt_state->count) { - case 0: - synaptics_report_slot(dev, 0, NULL); - synaptics_report_slot(dev, 1, NULL); - break; - case 1: - if (mt_state->sgm == -1) { - synaptics_report_slot(dev, 0, NULL); - synaptics_report_slot(dev, 1, NULL); - } else if (mt_state->sgm == 0) { - synaptics_report_slot(dev, 0, sgm); - synaptics_report_slot(dev, 1, NULL); - } else { - synaptics_report_slot(dev, 0, NULL); - synaptics_report_slot(dev, 1, sgm); - } - break; - default: - /* - * If the finger slot contained in SGM is valid, and either - * hasn't changed, or is new, or the old SGM has now moved to - * AGM, then report SGM in MTB slot 0. - * Otherwise, empty MTB slot 0. - */ - if (mt_state->sgm != -1 && - (mt_state->sgm == old->sgm || - old->sgm == -1 || mt_state->agm == old->sgm)) - synaptics_report_slot(dev, 0, sgm); - else - synaptics_report_slot(dev, 0, NULL); + nsemi = clamp_val(num_fingers, 0, 2); - /* - * If the finger slot contained in AGM is valid, and either - * hasn't changed, or is new, then report AGM in MTB slot 1. - * Otherwise, empty MTB slot 1. - * - * However, in the case where the AGM is new, make sure that - * that it is either the same as the old SGM, or there was no - * SGM. - * - * Otherwise, if the SGM was just 1, and the new AGM is 2, then - * the new AGM will keep the old SGM's tracking ID, which can - * cause apparent drumroll. This happens if in the following - * valid finger sequence: - * - * Action SGM AGM (MTB slot:Contact) - * 1. Touch contact 0 (0:0) - * 2. Touch contact 1 (0:0, 1:1) - * 3. Lift contact 0 (1:1) - * 4. Touch contacts 2,3 (0:2, 1:3) - * - * In step 4, contact 3, in AGM must not be given the same - * tracking ID as contact 1 had in step 3. To avoid this, - * the first agm with contact 3 is dropped and slot 1 is - * invalidated (tracking ID = -1). - */ - if (mt_state->agm != -1 && - (mt_state->agm == old->agm || - (old->agm == -1 && - (old->sgm == -1 || mt_state->agm == old->sgm)))) - synaptics_report_slot(dev, 1, agm); - else - synaptics_report_slot(dev, 1, NULL); - break; + for (i = 0; i < nsemi; i++) { + pos[i].x = hw[i]->x; + pos[i].y = synaptics_invert_y(hw[i]->y); } + input_mt_assign_slots(dev, slot, pos, nsemi, DMAX * priv->x_res); + + for (i = 0; i < nsemi; i++) { + input_mt_slot(dev, slot[i]); + input_mt_report_slot_state(dev, MT_TOOL_FINGER, true); + input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x); + input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y); + input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z); + } + + input_mt_drop_unused(dev); + /* Don't use active slot count to generate BTN_TOOL events. */ input_mt_report_pointer_emulation(dev, false); /* Send the number of fingers reported by touchpad itself. */ - input_mt_report_finger_count(dev, mt_state->count); + input_mt_report_finger_count(dev, num_fingers); synaptics_report_buttons(psmouse, sgm); input_sync(dev); } -/* Handle case where mt_state->count = 0 */ -static void synaptics_image_sensor_0f(struct synaptics_data *priv, - struct synaptics_mt_state *mt_state) -{ - synaptics_mt_state_set(mt_state, 0, -1, -1); - priv->mt_state_lost = false; -} - -/* Handle case where mt_state->count = 1 */ -static void synaptics_image_sensor_1f(struct synaptics_data *priv, - struct synaptics_mt_state *mt_state) -{ - struct synaptics_hw_state *agm = &priv->agm; - struct synaptics_mt_state *old = &priv->mt_state; - - /* - * If the last AGM was (0,0,0), and there is only one finger left, - * then we absolutely know that SGM contains slot 0, and all other - * fingers have been removed. - */ - if (priv->agm_pending && agm->z == 0) { - synaptics_mt_state_set(mt_state, 1, 0, -1); - priv->mt_state_lost = false; - return; - } - - switch (old->count) { - case 0: - synaptics_mt_state_set(mt_state, 1, 0, -1); - break; - case 1: - /* - * If mt_state_lost, then the previous transition was 3->1, - * and SGM now contains either slot 0 or 1, but we don't know - * which. So, we just assume that the SGM now contains slot 1. - * - * If pending AGM and either: - * (a) the previous SGM slot contains slot 0, or - * (b) there was no SGM slot - * then, the SGM now contains slot 1 - * - * Case (a) happens with very rapid "drum roll" gestures, where - * slot 0 finger is lifted and a new slot 1 finger touches - * within one reporting interval. - * - * Case (b) happens if initially two or more fingers tap - * briefly, and all but one lift before the end of the first - * reporting interval. - * - * (In both these cases, slot 0 will becomes empty, so SGM - * contains slot 1 with the new finger) - * - * Else, if there was no previous SGM, it now contains slot 0. - * - * Otherwise, SGM still contains the same slot. - */ - if (priv->mt_state_lost || - (priv->agm_pending && old->sgm <= 0)) - synaptics_mt_state_set(mt_state, 1, 1, -1); - else if (old->sgm == -1) - synaptics_mt_state_set(mt_state, 1, 0, -1); - break; - case 2: - /* - * If mt_state_lost, we don't know which finger SGM contains. - * - * So, report 1 finger, but with both slots empty. - * We will use slot 1 on subsequent 1->1 - */ - if (priv->mt_state_lost) { - synaptics_mt_state_set(mt_state, 1, -1, -1); - break; - } - /* - * Since the last AGM was NOT (0,0,0), it was the finger in - * slot 0 that has been removed. - * So, SGM now contains previous AGM's slot, and AGM is now - * empty. - */ - synaptics_mt_state_set(mt_state, 1, old->agm, -1); - break; - case 3: - /* - * Since last AGM was not (0,0,0), we don't know which finger - * is left. - * - * So, report 1 finger, but with both slots empty. - * We will use slot 1 on subsequent 1->1 - */ - synaptics_mt_state_set(mt_state, 1, -1, -1); - priv->mt_state_lost = true; - break; - case 4: - case 5: - /* mt_state was updated by AGM-CONTACT packet */ - break; - } -} - -/* Handle case where mt_state->count = 2 */ -static void synaptics_image_sensor_2f(struct synaptics_data *priv, - struct synaptics_mt_state *mt_state) -{ - struct synaptics_mt_state *old = &priv->mt_state; - - switch (old->count) { - case 0: - synaptics_mt_state_set(mt_state, 2, 0, 1); - break; - case 1: - /* - * If previous SGM contained slot 1 or higher, SGM now contains - * slot 0 (the newly touching finger) and AGM contains SGM's - * previous slot. - * - * Otherwise, SGM still contains slot 0 and AGM now contains - * slot 1. - */ - if (old->sgm >= 1) - synaptics_mt_state_set(mt_state, 2, 0, old->sgm); - else - synaptics_mt_state_set(mt_state, 2, 0, 1); - break; - case 2: - /* - * If mt_state_lost, SGM now contains either finger 1 or 2, but - * we don't know which. - * So, we just assume that the SGM contains slot 0 and AGM 1. - */ - if (priv->mt_state_lost) - synaptics_mt_state_set(mt_state, 2, 0, 1); - /* - * Otherwise, use the same mt_state, since it either hasn't - * changed, or was updated by a recently received AGM-CONTACT - * packet. - */ - break; - case 3: - /* - * 3->2 transitions have two unsolvable problems: - * 1) no indication is given which finger was removed - * 2) no way to tell if agm packet was for finger 3 - * before 3->2, or finger 2 after 3->2. - * - * So, report 2 fingers, but empty all slots. - * We will guess slots [0,1] on subsequent 2->2. - */ - synaptics_mt_state_set(mt_state, 2, -1, -1); - priv->mt_state_lost = true; - break; - case 4: - case 5: - /* mt_state was updated by AGM-CONTACT packet */ - break; - } -} - -/* Handle case where mt_state->count = 3 */ -static void synaptics_image_sensor_3f(struct synaptics_data *priv, - struct synaptics_mt_state *mt_state) -{ - struct synaptics_mt_state *old = &priv->mt_state; - - switch (old->count) { - case 0: - synaptics_mt_state_set(mt_state, 3, 0, 2); - break; - case 1: - /* - * If previous SGM contained slot 2 or higher, SGM now contains - * slot 0 (one of the newly touching fingers) and AGM contains - * SGM's previous slot. - * - * Otherwise, SGM now contains slot 0 and AGM contains slot 2. - */ - if (old->sgm >= 2) - synaptics_mt_state_set(mt_state, 3, 0, old->sgm); - else - synaptics_mt_state_set(mt_state, 3, 0, 2); - break; - case 2: - /* - * If the AGM previously contained slot 3 or higher, then the - * newly touching finger is in the lowest available slot. - * - * If SGM was previously 1 or higher, then the new SGM is - * now slot 0 (with a new finger), otherwise, the new finger - * is now in a hidden slot between 0 and AGM's slot. - * - * In all such cases, the SGM now contains slot 0, and the AGM - * continues to contain the same slot as before. - */ - if (old->agm >= 3) { - synaptics_mt_state_set(mt_state, 3, 0, old->agm); - break; - } - - /* - * After some 3->1 and all 3->2 transitions, we lose track - * of which slot is reported by SGM and AGM. - * - * For 2->3 in this state, report 3 fingers, but empty all - * slots, and we will guess (0,2) on a subsequent 0->3. - * - * To userspace, the resulting transition will look like: - * 2:[0,1] -> 3:[-1,-1] -> 3:[0,2] - */ - if (priv->mt_state_lost) { - synaptics_mt_state_set(mt_state, 3, -1, -1); - break; - } - - /* - * If the (SGM,AGM) really previously contained slots (0, 1), - * then we cannot know what slot was just reported by the AGM, - * because the 2->3 transition can occur either before or after - * the AGM packet. Thus, this most recent AGM could contain - * either the same old slot 1 or the new slot 2. - * Subsequent AGMs will be reporting slot 2. - * - * To userspace, the resulting transition will look like: - * 2:[0,1] -> 3:[0,-1] -> 3:[0,2] - */ - synaptics_mt_state_set(mt_state, 3, 0, -1); - break; - case 3: - /* - * If, for whatever reason, the previous agm was invalid, - * Assume SGM now contains slot 0, AGM now contains slot 2. - */ - if (old->agm <= 2) - synaptics_mt_state_set(mt_state, 3, 0, 2); - /* - * mt_state either hasn't changed, or was updated by a recently - * received AGM-CONTACT packet. - */ - break; - - case 4: - case 5: - /* mt_state was updated by AGM-CONTACT packet */ - break; - } -} - -/* Handle case where mt_state->count = 4, or = 5 */ -static void synaptics_image_sensor_45f(struct synaptics_data *priv, - struct synaptics_mt_state *mt_state) -{ - /* mt_state was updated correctly by AGM-CONTACT packet */ - priv->mt_state_lost = false; -} - static void synaptics_image_sensor_process(struct psmouse *psmouse, struct synaptics_hw_state *sgm) { struct synaptics_data *priv = psmouse->private; - struct synaptics_hw_state *agm = &priv->agm; - struct synaptics_mt_state mt_state; - - /* Initialize using current mt_state (as updated by last agm) */ - mt_state = agm->mt_state; + int num_fingers; /* * Update mt_state using the new finger count and current mt_state. */ if (sgm->z == 0) - synaptics_image_sensor_0f(priv, &mt_state); + num_fingers = 0; else if (sgm->w >= 4) - synaptics_image_sensor_1f(priv, &mt_state); + num_fingers = 1; else if (sgm->w == 0) - synaptics_image_sensor_2f(priv, &mt_state); - else if (sgm->w == 1 && mt_state.count <= 3) - synaptics_image_sensor_3f(priv, &mt_state); + num_fingers = 2; + else if (sgm->w == 1) + num_fingers = priv->agm_count ? priv->agm_count : 3; else - synaptics_image_sensor_45f(priv, &mt_state); + num_fingers = 4; /* Send resulting input events to user space */ - synaptics_report_mt_data(psmouse, &mt_state, sgm); - - /* Store updated mt_state */ - priv->mt_state = agm->mt_state = mt_state; - priv->agm_pending = false; -} - -static void synaptics_profile_sensor_process(struct psmouse *psmouse, - struct synaptics_hw_state *sgm, - int num_fingers) -{ - struct input_dev *dev = psmouse->dev; - struct synaptics_data *priv = psmouse->private; - struct synaptics_hw_state *hw[2] = { sgm, &priv->agm }; - struct input_mt_pos pos[2]; - int slot[2], nsemi, i; - - nsemi = clamp_val(num_fingers, 0, 2); - - for (i = 0; i < nsemi; i++) { - pos[i].x = hw[i]->x; - pos[i].y = synaptics_invert_y(hw[i]->y); - } - - input_mt_assign_slots(dev, slot, pos, nsemi); - - for (i = 0; i < nsemi; i++) { - input_mt_slot(dev, slot[i]); - input_mt_report_slot_state(dev, MT_TOOL_FINGER, true); - input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x); - input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y); - input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z); - } - - input_mt_drop_unused(dev); - input_mt_report_pointer_emulation(dev, false); - input_mt_report_finger_count(dev, num_fingers); - - synaptics_report_buttons(psmouse, sgm); - - input_sync(dev); + synaptics_report_mt_data(psmouse, sgm, num_fingers); } /* @@ -1287,7 +924,7 @@ static void synaptics_process_packet(struct psmouse *psmouse) } if (cr48_profile_sensor) { - synaptics_profile_sensor_process(psmouse, &hw, num_fingers); + synaptics_report_mt_data(psmouse, &hw, num_fingers); return; } @@ -1444,7 +1081,7 @@ static void set_input_params(struct psmouse *psmouse, ABS_MT_POSITION_Y); /* Image sensors can report per-contact pressure */ input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0); - input_mt_init_slots(dev, 2, INPUT_MT_POINTER); + input_mt_init_slots(dev, 2, INPUT_MT_POINTER | INPUT_MT_TRACK); /* Image sensors can signal 4 and 5 finger clicks */ __set_bit(BTN_TOOL_QUADTAP, dev->keybit); diff --git a/drivers/input/mouse/synaptics.h b/drivers/input/mouse/synaptics.h index 1bd01f21783b..6faf9bb7c117 100644 --- a/drivers/input/mouse/synaptics.h +++ b/drivers/input/mouse/synaptics.h @@ -119,16 +119,6 @@ #define SYN_REDUCED_FILTER_FUZZ 8 /* - * A structure to describe which internal touchpad finger slots are being - * reported in raw packets. - */ -struct synaptics_mt_state { - int count; /* num fingers being tracked */ - int sgm; /* which slot is reported by sgm pkt */ - int agm; /* which slot is reported by agm pkt*/ -}; - -/* * A structure to describe the state of the touchpad hardware (buttons and pad) */ struct synaptics_hw_state { @@ -143,9 +133,6 @@ struct synaptics_hw_state { unsigned int down:1; unsigned char ext_buttons; signed char scroll; - - /* As reported in last AGM-CONTACT packets */ - struct synaptics_mt_state mt_state; }; struct synaptics_data { @@ -170,15 +157,12 @@ struct synaptics_data { struct serio *pt_port; /* Pass-through serio port */ - struct synaptics_mt_state mt_state; /* Current mt finger state */ - bool mt_state_lost; /* mt_state may be incorrect */ - /* * Last received Advanced Gesture Mode (AGM) packet. An AGM packet * contains position data for a second contact, at half resolution. */ struct synaptics_hw_state agm; - bool agm_pending; /* new AGM packet received */ + unsigned int agm_count; /* finger count reported by agm */ /* ForcePad handling */ unsigned long press_start; diff --git a/drivers/input/mouse/trackpoint.c b/drivers/input/mouse/trackpoint.c index 30c8b6998808..354d47ecd66a 100644 --- a/drivers/input/mouse/trackpoint.c +++ b/drivers/input/mouse/trackpoint.c @@ -227,6 +227,7 @@ TRACKPOINT_INT_ATTR(thresh, TP_THRESH, TP_DEF_THRESH); TRACKPOINT_INT_ATTR(upthresh, TP_UP_THRESH, TP_DEF_UP_THRESH); TRACKPOINT_INT_ATTR(ztime, TP_Z_TIME, TP_DEF_Z_TIME); TRACKPOINT_INT_ATTR(jenks, TP_JENKS_CURV, TP_DEF_JENKS_CURV); +TRACKPOINT_INT_ATTR(drift_time, TP_DRIFT_TIME, TP_DEF_DRIFT_TIME); TRACKPOINT_BIT_ATTR(press_to_select, TP_TOGGLE_PTSON, TP_MASK_PTSON, 0, TP_DEF_PTSON); @@ -246,6 +247,7 @@ static struct attribute *trackpoint_attrs[] = { &psmouse_attr_upthresh.dattr.attr, &psmouse_attr_ztime.dattr.attr, &psmouse_attr_jenks.dattr.attr, + &psmouse_attr_drift_time.dattr.attr, &psmouse_attr_press_to_select.dattr.attr, &psmouse_attr_skipback.dattr.attr, &psmouse_attr_ext_dev.dattr.attr, @@ -312,6 +314,7 @@ static int trackpoint_sync(struct psmouse *psmouse, bool in_power_on_state) TRACKPOINT_UPDATE(in_power_on_state, psmouse, tp, upthresh); TRACKPOINT_UPDATE(in_power_on_state, psmouse, tp, ztime); TRACKPOINT_UPDATE(in_power_on_state, psmouse, tp, jenks); + TRACKPOINT_UPDATE(in_power_on_state, psmouse, tp, drift_time); /* toggles */ TRACKPOINT_UPDATE(in_power_on_state, psmouse, tp, press_to_select); @@ -332,6 +335,7 @@ static void trackpoint_defaults(struct trackpoint_data *tp) TRACKPOINT_SET_POWER_ON_DEFAULT(tp, upthresh); TRACKPOINT_SET_POWER_ON_DEFAULT(tp, ztime); TRACKPOINT_SET_POWER_ON_DEFAULT(tp, jenks); + TRACKPOINT_SET_POWER_ON_DEFAULT(tp, drift_time); TRACKPOINT_SET_POWER_ON_DEFAULT(tp, inertia); /* toggles */ diff --git a/drivers/input/mouse/trackpoint.h b/drivers/input/mouse/trackpoint.h index ecd0547964a5..5617ed3a7d7a 100644 --- a/drivers/input/mouse/trackpoint.h +++ b/drivers/input/mouse/trackpoint.h @@ -70,6 +70,9 @@ #define TP_UP_THRESH 0x5A /* Used to generate a 'click' on Z-axis */ #define TP_Z_TIME 0x5E /* How sharp of a press */ #define TP_JENKS_CURV 0x5D /* Minimum curvature for double click */ +#define TP_DRIFT_TIME 0x5F /* How long a 'hands off' condition */ + /* must last (x*107ms) for drift */ + /* correction to occur */ /* * Toggling Flag bits @@ -120,6 +123,7 @@ #define TP_DEF_UP_THRESH 0xFF #define TP_DEF_Z_TIME 0x26 #define TP_DEF_JENKS_CURV 0x87 +#define TP_DEF_DRIFT_TIME 0x05 /* Toggles */ #define TP_DEF_MB 0x00 @@ -137,6 +141,7 @@ struct trackpoint_data unsigned char draghys, mindrag; unsigned char thresh, upthresh; unsigned char ztime, jenks; + unsigned char drift_time; /* toggles */ unsigned char press_to_select; diff --git a/drivers/input/serio/Kconfig b/drivers/input/serio/Kconfig index bc2d47431bdc..77833d7a004b 100644 --- a/drivers/input/serio/Kconfig +++ b/drivers/input/serio/Kconfig @@ -281,4 +281,14 @@ config HYPERV_KEYBOARD To compile this driver as a module, choose M here: the module will be called hyperv_keyboard. +config SERIO_SUN4I_PS2 + tristate "Allwinner A10 PS/2 controller support" + depends on ARCH_SUNXI || COMPILE_TEST + help + This selects support for the PS/2 Host Controller on + Allwinner A10. + + To compile this driver as a module, choose M here: the + module will be called sun4i-ps2. + endif diff --git a/drivers/input/serio/Makefile b/drivers/input/serio/Makefile index 815d874fe724..c600089b7a34 100644 --- a/drivers/input/serio/Makefile +++ b/drivers/input/serio/Makefile @@ -29,3 +29,4 @@ obj-$(CONFIG_SERIO_ARC_PS2) += arc_ps2.o obj-$(CONFIG_SERIO_APBPS2) += apbps2.o obj-$(CONFIG_SERIO_OLPC_APSP) += olpc_apsp.o obj-$(CONFIG_HYPERV_KEYBOARD) += hyperv-keyboard.o +obj-$(CONFIG_SERIO_SUN4I_PS2) += sun4i-ps2.o diff --git a/drivers/input/serio/gscps2.c b/drivers/input/serio/gscps2.c index 8d9ba0c3827c..94ab494a6ade 100644 --- a/drivers/input/serio/gscps2.c +++ b/drivers/input/serio/gscps2.c @@ -40,7 +40,6 @@ MODULE_AUTHOR("Laurent Canet <canetl@esiee.fr>, Thibaut Varene <varenet@parisc-linux.org>, Helge Deller <deller@gmx.de>"); MODULE_DESCRIPTION("HP GSC PS2 port driver"); MODULE_LICENSE("GPL"); -MODULE_DEVICE_TABLE(parisc, gscps2_device_tbl); #define PFX "gscps2.c: " @@ -439,6 +438,7 @@ static struct parisc_device_id gscps2_device_tbl[] = { #endif { 0, } /* 0 terminated list */ }; +MODULE_DEVICE_TABLE(parisc, gscps2_device_tbl); static struct parisc_driver parisc_ps2_driver = { .name = "gsc_ps2", diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h index c66d1b53843e..c11556563ef0 100644 --- a/drivers/input/serio/i8042-x86ia64io.h +++ b/drivers/input/serio/i8042-x86ia64io.h @@ -152,6 +152,14 @@ static const struct dmi_system_id __initconst i8042_dmi_noloop_table[] = { }, }, { + /* Medion Akoya E7225 */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Medion"), + DMI_MATCH(DMI_PRODUCT_NAME, "Akoya E7225"), + DMI_MATCH(DMI_PRODUCT_VERSION, "1.0"), + }, + }, + { /* Blue FB5601 */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "blue"), @@ -415,6 +423,13 @@ static const struct dmi_system_id __initconst i8042_dmi_nomux_table[] = { }, }, { + /* Acer Aspire 7738 */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Acer"), + DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 7738"), + }, + }, + { /* Gericom Bellagio */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Gericom"), @@ -745,6 +760,35 @@ static const struct dmi_system_id __initconst i8042_dmi_dritek_table[] = { { } }; +/* + * Some laptops need keyboard reset before probing for the trackpad to get + * it detected, initialised & finally work. + */ +static const struct dmi_system_id __initconst i8042_dmi_kbdreset_table[] = { + { + /* Gigabyte P35 v2 - Elantech touchpad */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"), + DMI_MATCH(DMI_PRODUCT_NAME, "P35V2"), + }, + }, + { + /* Aorus branded Gigabyte X3 Plus - Elantech touchpad */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"), + DMI_MATCH(DMI_PRODUCT_NAME, "X3"), + }, + }, + { + /* Gigabyte P34 - Elantech touchpad */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"), + DMI_MATCH(DMI_PRODUCT_NAME, "P34"), + }, + }, + { } +}; + #endif /* CONFIG_X86 */ #ifdef CONFIG_PNP @@ -1040,6 +1084,9 @@ static int __init i8042_platform_init(void) if (dmi_check_system(i8042_dmi_dritek_table)) i8042_dritek = true; + if (dmi_check_system(i8042_dmi_kbdreset_table)) + i8042_kbdreset = true; + /* * A20 was already enabled during early kernel init. But some buggy * BIOSes (in MSI Laptops) require A20 to be enabled using 8042 to diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c index 924e4bf357fb..986a71c614b0 100644 --- a/drivers/input/serio/i8042.c +++ b/drivers/input/serio/i8042.c @@ -67,6 +67,10 @@ static bool i8042_notimeout; module_param_named(notimeout, i8042_notimeout, bool, 0); MODULE_PARM_DESC(notimeout, "Ignore timeouts signalled by i8042"); +static bool i8042_kbdreset; +module_param_named(kbdreset, i8042_kbdreset, bool, 0); +MODULE_PARM_DESC(kbdreset, "Reset device connected to KBD port"); + #ifdef CONFIG_X86 static bool i8042_dritek; module_param_named(dritek, i8042_dritek, bool, 0); @@ -790,6 +794,16 @@ static int __init i8042_check_aux(void) return -1; /* + * Reset keyboard (needed on some laptops to successfully detect + * touchpad, e.g., some Gigabyte laptop models with Elantech + * touchpads). + */ + if (i8042_kbdreset) { + pr_warn("Attempting to reset device connected to KBD port\n"); + i8042_kbd_write(NULL, (unsigned char) 0xff); + } + +/* * Test AUX IRQ delivery to make sure BIOS did not grab the IRQ and * used it for a PCI card or somethig else. */ diff --git a/drivers/input/serio/sun4i-ps2.c b/drivers/input/serio/sun4i-ps2.c new file mode 100644 index 000000000000..04b96fe39339 --- /dev/null +++ b/drivers/input/serio/sun4i-ps2.c @@ -0,0 +1,340 @@ +/* + * Driver for Allwinner A10 PS2 host controller + * + * Author: Vishnu Patekar <vishnupatekar0510@gmail.com> + * Aaron.maoye <leafy.myeh@newbietech.com> + */ + +#include <linux/module.h> +#include <linux/serio.h> +#include <linux/interrupt.h> +#include <linux/errno.h> +#include <linux/slab.h> +#include <linux/io.h> +#include <linux/clk.h> +#include <linux/mod_devicetable.h> +#include <linux/platform_device.h> + +#define DRIVER_NAME "sun4i-ps2" + +/* register offset definitions */ +#define PS2_REG_GCTL 0x00 /* PS2 Module Global Control Reg */ +#define PS2_REG_DATA 0x04 /* PS2 Module Data Reg */ +#define PS2_REG_LCTL 0x08 /* PS2 Module Line Control Reg */ +#define PS2_REG_LSTS 0x0C /* PS2 Module Line Status Reg */ +#define PS2_REG_FCTL 0x10 /* PS2 Module FIFO Control Reg */ +#define PS2_REG_FSTS 0x14 /* PS2 Module FIFO Status Reg */ +#define PS2_REG_CLKDR 0x18 /* PS2 Module Clock Divider Reg*/ + +/* PS2 GLOBAL CONTROL REGISTER PS2_GCTL */ +#define PS2_GCTL_INTFLAG BIT(4) +#define PS2_GCTL_INTEN BIT(3) +#define PS2_GCTL_RESET BIT(2) +#define PS2_GCTL_MASTER BIT(1) +#define PS2_GCTL_BUSEN BIT(0) + +/* PS2 LINE CONTROL REGISTER */ +#define PS2_LCTL_NOACK BIT(18) +#define PS2_LCTL_TXDTOEN BIT(8) +#define PS2_LCTL_STOPERREN BIT(3) +#define PS2_LCTL_ACKERREN BIT(2) +#define PS2_LCTL_PARERREN BIT(1) +#define PS2_LCTL_RXDTOEN BIT(0) + +/* PS2 LINE STATUS REGISTER */ +#define PS2_LSTS_TXTDO BIT(8) +#define PS2_LSTS_STOPERR BIT(3) +#define PS2_LSTS_ACKERR BIT(2) +#define PS2_LSTS_PARERR BIT(1) +#define PS2_LSTS_RXTDO BIT(0) + +#define PS2_LINE_ERROR_BIT \ + (PS2_LSTS_TXTDO | PS2_LSTS_STOPERR | PS2_LSTS_ACKERR | \ + PS2_LSTS_PARERR | PS2_LSTS_RXTDO) + +/* PS2 FIFO CONTROL REGISTER */ +#define PS2_FCTL_TXRST BIT(17) +#define PS2_FCTL_RXRST BIT(16) +#define PS2_FCTL_TXUFIEN BIT(10) +#define PS2_FCTL_TXOFIEN BIT(9) +#define PS2_FCTL_TXRDYIEN BIT(8) +#define PS2_FCTL_RXUFIEN BIT(2) +#define PS2_FCTL_RXOFIEN BIT(1) +#define PS2_FCTL_RXRDYIEN BIT(0) + +/* PS2 FIFO STATUS REGISTER */ +#define PS2_FSTS_TXUF BIT(10) +#define PS2_FSTS_TXOF BIT(9) +#define PS2_FSTS_TXRDY BIT(8) +#define PS2_FSTS_RXUF BIT(2) +#define PS2_FSTS_RXOF BIT(1) +#define PS2_FSTS_RXRDY BIT(0) + +#define PS2_FIFO_ERROR_BIT \ + (PS2_FSTS_TXUF | PS2_FSTS_TXOF | PS2_FSTS_RXUF | PS2_FSTS_RXOF) + +#define PS2_SAMPLE_CLK 1000000 +#define PS2_SCLK 125000 + +struct sun4i_ps2data { + struct serio *serio; + struct device *dev; + + /* IO mapping base */ + void __iomem *reg_base; + + /* clock management */ + struct clk *clk; + + /* irq */ + spinlock_t lock; + int irq; +}; + +static irqreturn_t sun4i_ps2_interrupt(int irq, void *dev_id) +{ + struct sun4i_ps2data *drvdata = dev_id; + u32 intr_status; + u32 fifo_status; + unsigned char byte; + unsigned int rxflags = 0; + u32 rval; + + spin_lock(&drvdata->lock); + + /* Get the PS/2 interrupts and clear them */ + intr_status = readl(drvdata->reg_base + PS2_REG_LSTS); + fifo_status = readl(drvdata->reg_base + PS2_REG_FSTS); + + /* Check line status register */ + if (intr_status & PS2_LINE_ERROR_BIT) { + rxflags = (intr_status & PS2_LINE_ERROR_BIT) ? SERIO_FRAME : 0; + rxflags |= (intr_status & PS2_LSTS_PARERR) ? SERIO_PARITY : 0; + rxflags |= (intr_status & PS2_LSTS_PARERR) ? SERIO_TIMEOUT : 0; + + rval = PS2_LSTS_TXTDO | PS2_LSTS_STOPERR | PS2_LSTS_ACKERR | + PS2_LSTS_PARERR | PS2_LSTS_RXTDO; + writel(rval, drvdata->reg_base + PS2_REG_LSTS); + } + + /* Check FIFO status register */ + if (fifo_status & PS2_FIFO_ERROR_BIT) { + rval = PS2_FSTS_TXUF | PS2_FSTS_TXOF | PS2_FSTS_TXRDY | + PS2_FSTS_RXUF | PS2_FSTS_RXOF | PS2_FSTS_RXRDY; + writel(rval, drvdata->reg_base + PS2_REG_FSTS); + } + + rval = (fifo_status >> 16) & 0x3; + while (rval--) { + byte = readl(drvdata->reg_base + PS2_REG_DATA) & 0xff; + serio_interrupt(drvdata->serio, byte, rxflags); + } + + writel(intr_status, drvdata->reg_base + PS2_REG_LSTS); + writel(fifo_status, drvdata->reg_base + PS2_REG_FSTS); + + spin_unlock(&drvdata->lock); + + return IRQ_HANDLED; +} + +static int sun4i_ps2_open(struct serio *serio) +{ + struct sun4i_ps2data *drvdata = serio->port_data; + u32 src_clk = 0; + u32 clk_scdf; + u32 clk_pcdf; + u32 rval; + unsigned long flags; + + /* Set line control and enable interrupt */ + rval = PS2_LCTL_STOPERREN | PS2_LCTL_ACKERREN + | PS2_LCTL_PARERREN | PS2_LCTL_RXDTOEN; + writel(rval, drvdata->reg_base + PS2_REG_LCTL); + + /* Reset FIFO */ + rval = PS2_FCTL_TXRST | PS2_FCTL_RXRST | PS2_FCTL_TXUFIEN + | PS2_FCTL_TXOFIEN | PS2_FCTL_RXUFIEN + | PS2_FCTL_RXOFIEN | PS2_FCTL_RXRDYIEN; + + writel(rval, drvdata->reg_base + PS2_REG_FCTL); + + src_clk = clk_get_rate(drvdata->clk); + /* Set clock divider register */ + clk_scdf = src_clk / PS2_SAMPLE_CLK - 1; + clk_pcdf = PS2_SAMPLE_CLK / PS2_SCLK - 1; + rval = (clk_scdf << 8) | clk_pcdf; + writel(rval, drvdata->reg_base + PS2_REG_CLKDR); + + /* Set global control register */ + rval = PS2_GCTL_RESET | PS2_GCTL_INTEN | PS2_GCTL_MASTER + | PS2_GCTL_BUSEN; + + spin_lock_irqsave(&drvdata->lock, flags); + writel(rval, drvdata->reg_base + PS2_REG_GCTL); + spin_unlock_irqrestore(&drvdata->lock, flags); + + return 0; +} + +static void sun4i_ps2_close(struct serio *serio) +{ + struct sun4i_ps2data *drvdata = serio->port_data; + u32 rval; + + /* Shut off the interrupt */ + rval = readl(drvdata->reg_base + PS2_REG_GCTL); + writel(rval & ~(PS2_GCTL_INTEN), drvdata->reg_base + PS2_REG_GCTL); + + synchronize_irq(drvdata->irq); +} + +static int sun4i_ps2_write(struct serio *serio, unsigned char val) +{ + unsigned long expire = jiffies + msecs_to_jiffies(10000); + struct sun4i_ps2data *drvdata = serio->port_data; + + do { + if (readl(drvdata->reg_base + PS2_REG_FSTS) & PS2_FSTS_TXRDY) { + writel(val, drvdata->reg_base + PS2_REG_DATA); + return 0; + } + } while (time_before(jiffies, expire)); + + return SERIO_TIMEOUT; +} + +static int sun4i_ps2_probe(struct platform_device *pdev) +{ + struct resource *res; /* IO mem resources */ + struct sun4i_ps2data *drvdata; + struct serio *serio; + struct device *dev = &pdev->dev; + unsigned int irq; + int error; + + drvdata = kzalloc(sizeof(struct sun4i_ps2data), GFP_KERNEL); + serio = kzalloc(sizeof(struct serio), GFP_KERNEL); + if (!drvdata || !serio) { + error = -ENOMEM; + goto err_free_mem; + } + + spin_lock_init(&drvdata->lock); + + /* IO */ + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(dev, "failed to locate registers\n"); + error = -ENXIO; + goto err_free_mem; + } + + drvdata->reg_base = ioremap(res->start, resource_size(res)); + if (!drvdata->reg_base) { + dev_err(dev, "failed to map registers\n"); + error = -ENOMEM; + goto err_free_mem; + } + + drvdata->clk = clk_get(dev, NULL); + if (IS_ERR(drvdata->clk)) { + error = PTR_ERR(drvdata->clk); + dev_err(dev, "couldn't get clock %d\n", error); + goto err_ioremap; + } + + error = clk_prepare_enable(drvdata->clk); + if (error) { + dev_err(dev, "failed to enable clock %d\n", error); + goto err_clk; + } + + serio->id.type = SERIO_8042; + serio->write = sun4i_ps2_write; + serio->open = sun4i_ps2_open; + serio->close = sun4i_ps2_close; + serio->port_data = drvdata; + serio->dev.parent = dev; + strlcpy(serio->name, dev_name(dev), sizeof(serio->name)); + strlcpy(serio->phys, dev_name(dev), sizeof(serio->phys)); + + /* shutoff interrupt */ + writel(0, drvdata->reg_base + PS2_REG_GCTL); + + /* Get IRQ for the device */ + irq = platform_get_irq(pdev, 0); + if (!irq) { + dev_err(dev, "no IRQ found\n"); + error = -ENXIO; + goto err_disable_clk; + } + + drvdata->irq = irq; + drvdata->serio = serio; + drvdata->dev = dev; + + error = request_irq(drvdata->irq, sun4i_ps2_interrupt, 0, + DRIVER_NAME, drvdata); + if (error) { + dev_err(drvdata->dev, "failed to allocate interrupt %d: %d\n", + drvdata->irq, error); + goto err_disable_clk; + } + + serio_register_port(serio); + platform_set_drvdata(pdev, drvdata); + + return 0; /* success */ + +err_disable_clk: + clk_disable_unprepare(drvdata->clk); +err_clk: + clk_put(drvdata->clk); +err_ioremap: + iounmap(drvdata->reg_base); +err_free_mem: + kfree(serio); + kfree(drvdata); + return error; +} + +static int sun4i_ps2_remove(struct platform_device *pdev) +{ + struct sun4i_ps2data *drvdata = platform_get_drvdata(pdev); + + serio_unregister_port(drvdata->serio); + + free_irq(drvdata->irq, drvdata); + + clk_disable_unprepare(drvdata->clk); + clk_put(drvdata->clk); + + iounmap(drvdata->reg_base); + + kfree(drvdata); + + return 0; +} + +static const struct of_device_id sun4i_ps2_match[] = { + { .compatible = "allwinner,sun4i-a10-ps2", }, + { }, +}; + +MODULE_DEVICE_TABLE(of, sun4i_ps2_match); + +static struct platform_driver sun4i_ps2_driver = { + .probe = sun4i_ps2_probe, + .remove = sun4i_ps2_remove, + .driver = { + .name = DRIVER_NAME, + .of_match_table = sun4i_ps2_match, + }, +}; +module_platform_driver(sun4i_ps2_driver); + +MODULE_AUTHOR("Vishnu Patekar <vishnupatekar0510@gmail.com>"); +MODULE_AUTHOR("Aaron.maoye <leafy.myeh@newbietech.com>"); +MODULE_DESCRIPTION("Allwinner A10/Sun4i PS/2 driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/input/tablet/gtco.c b/drivers/input/tablet/gtco.c index 858045694e9d..3a7f3a4a4396 100644 --- a/drivers/input/tablet/gtco.c +++ b/drivers/input/tablet/gtco.c @@ -59,7 +59,7 @@ Scott Hill shill@gtcocalcomp.com #include <asm/uaccess.h> #include <asm/unaligned.h> #include <asm/byteorder.h> - +#include <linux/bitops.h> #include <linux/usb/input.h> @@ -614,7 +614,6 @@ static void gtco_urb_callback(struct urb *urbinfo) struct input_dev *inputdev; int rc; u32 val = 0; - s8 valsigned = 0; char le_buffer[2]; inputdev = device->inputdevice; @@ -665,20 +664,11 @@ static void gtco_urb_callback(struct urb *urbinfo) /* Fall thru */ case 4: /* Tilt */ + input_report_abs(inputdev, ABS_TILT_X, + sign_extend32(device->buffer[6], 6)); - /* Sign extend these 7 bit numbers. */ - if (device->buffer[6] & 0x40) - device->buffer[6] |= 0x80; - - if (device->buffer[7] & 0x40) - device->buffer[7] |= 0x80; - - - valsigned = (device->buffer[6]); - input_report_abs(inputdev, ABS_TILT_X, (s32)valsigned); - - valsigned = (device->buffer[7]); - input_report_abs(inputdev, ABS_TILT_Y, (s32)valsigned); + input_report_abs(inputdev, ABS_TILT_Y, + sign_extend32(device->buffer[7], 6)); /* Fall thru */ case 2: diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c index bb070206223c..95ee92a91bd2 100644 --- a/drivers/input/touchscreen/atmel_mxt_ts.c +++ b/drivers/input/touchscreen/atmel_mxt_ts.c @@ -99,13 +99,9 @@ #define MXT_T6_STATUS_COMSERR (1 << 2) /* MXT_GEN_POWER_T7 field */ -struct t7_config { - u8 idle; - u8 active; -} __packed; - -#define MXT_POWER_CFG_RUN 0 -#define MXT_POWER_CFG_DEEPSLEEP 1 +#define MXT_POWER_IDLEACQINT 0 +#define MXT_POWER_ACTVACQINT 1 +#define MXT_POWER_ACTV2IDLETO 2 /* MXT_GEN_ACQUIRE_T8 field */ #define MXT_ACQUIRE_CHRGTIME 0 @@ -117,6 +113,7 @@ struct t7_config { #define MXT_ACQUIRE_ATCHCALSTHR 7 /* MXT_TOUCH_MULTI_T9 field */ +#define MXT_TOUCH_CTRL 0 #define MXT_T9_ORIENT 9 #define MXT_T9_RANGE 18 @@ -256,7 +253,6 @@ struct mxt_data { bool update_input; u8 last_message_count; u8 num_touchids; - struct t7_config t7_cfg; /* Cached parameters from object table */ u16 T5_address; @@ -672,6 +668,20 @@ static void mxt_proc_t6_messages(struct mxt_data *data, u8 *msg) data->t6_status = status; } +static int mxt_write_object(struct mxt_data *data, + u8 type, u8 offset, u8 val) +{ + struct mxt_object *object; + u16 reg; + + object = mxt_get_object(data, type); + if (!object || offset >= mxt_obj_size(object)) + return -EINVAL; + + reg = object->start_address; + return mxt_write_reg(data->client, reg + offset, val); +} + static void mxt_input_button(struct mxt_data *data, u8 *message) { struct input_dev *input = data->input_dev; @@ -1742,60 +1752,6 @@ err_free_object_table: return error; } -static int mxt_set_t7_power_cfg(struct mxt_data *data, u8 sleep) -{ - struct device *dev = &data->client->dev; - int error; - struct t7_config *new_config; - struct t7_config deepsleep = { .active = 0, .idle = 0 }; - - if (sleep == MXT_POWER_CFG_DEEPSLEEP) - new_config = &deepsleep; - else - new_config = &data->t7_cfg; - - error = __mxt_write_reg(data->client, data->T7_address, - sizeof(data->t7_cfg), new_config); - if (error) - return error; - - dev_dbg(dev, "Set T7 ACTV:%d IDLE:%d\n", - new_config->active, new_config->idle); - - return 0; -} - -static int mxt_init_t7_power_cfg(struct mxt_data *data) -{ - struct device *dev = &data->client->dev; - int error; - bool retry = false; - -recheck: - error = __mxt_read_reg(data->client, data->T7_address, - sizeof(data->t7_cfg), &data->t7_cfg); - if (error) - return error; - - if (data->t7_cfg.active == 0 || data->t7_cfg.idle == 0) { - if (!retry) { - dev_dbg(dev, "T7 cfg zero, resetting\n"); - mxt_soft_reset(data); - retry = true; - goto recheck; - } else { - dev_dbg(dev, "T7 cfg zero after reset, overriding\n"); - data->t7_cfg.active = 20; - data->t7_cfg.idle = 100; - return mxt_set_t7_power_cfg(data, MXT_POWER_CFG_RUN); - } - } - - dev_dbg(dev, "Initialized power cfg: ACTV %d, IDLE %d\n", - data->t7_cfg.active, data->t7_cfg.idle); - return 0; -} - static int mxt_configure_objects(struct mxt_data *data, const struct firmware *cfg) { @@ -1809,12 +1765,6 @@ static int mxt_configure_objects(struct mxt_data *data, dev_warn(dev, "Error %d updating config\n", error); } - error = mxt_init_t7_power_cfg(data); - if (error) { - dev_err(dev, "Failed to initialize power cfg\n"); - return error; - } - error = mxt_initialize_t9_input_device(data); if (error) return error; @@ -2093,15 +2043,16 @@ static const struct attribute_group mxt_attr_group = { static void mxt_start(struct mxt_data *data) { - mxt_set_t7_power_cfg(data, MXT_POWER_CFG_RUN); - - /* Recalibrate since chip has been in deep sleep */ - mxt_t6_command(data, MXT_COMMAND_CALIBRATE, 1, false); + /* Touch enable */ + mxt_write_object(data, + MXT_TOUCH_MULTI_T9, MXT_TOUCH_CTRL, 0x83); } static void mxt_stop(struct mxt_data *data) { - mxt_set_t7_power_cfg(data, MXT_POWER_CFG_DEEPSLEEP); + /* Touch disable */ + mxt_write_object(data, + MXT_TOUCH_MULTI_T9, MXT_TOUCH_CTRL, 0); } static int mxt_input_open(struct input_dev *dev) @@ -2266,6 +2217,8 @@ static int __maybe_unused mxt_resume(struct device *dev) struct mxt_data *data = i2c_get_clientdata(client); struct input_dev *input_dev = data->input_dev; + mxt_soft_reset(data); + mutex_lock(&input_dev->mutex); if (input_dev->users) diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c index 3793fcc7e5db..d4c24fb7704f 100644 --- a/drivers/input/touchscreen/edt-ft5x06.c +++ b/drivers/input/touchscreen/edt-ft5x06.c @@ -850,9 +850,11 @@ static int edt_ft5x06_ts_identify(struct i2c_client *client, } #define EDT_ATTR_CHECKSET(name, reg) \ +do { \ if (pdata->name >= edt_ft5x06_attr_##name.limit_low && \ pdata->name <= edt_ft5x06_attr_##name.limit_high) \ - edt_ft5x06_register_write(tsdata, reg, pdata->name) + edt_ft5x06_register_write(tsdata, reg, pdata->name); \ +} while (0) #define EDT_GET_PROP(name, reg) { \ u32 val; \ diff --git a/drivers/input/touchscreen/elants_i2c.c b/drivers/input/touchscreen/elants_i2c.c index a510f7ef9b66..926c58e540c0 100644 --- a/drivers/input/touchscreen/elants_i2c.c +++ b/drivers/input/touchscreen/elants_i2c.c @@ -33,10 +33,8 @@ #include <linux/delay.h> #include <linux/uaccess.h> #include <linux/buffer_head.h> -#include <linux/version.h> #include <linux/slab.h> #include <linux/firmware.h> -#include <linux/version.h> #include <linux/input/mt.h> #include <linux/acpi.h> #include <linux/of.h> diff --git a/drivers/input/touchscreen/pixcir_i2c_ts.c b/drivers/input/touchscreen/pixcir_i2c_ts.c index 4fb5537fdd42..2c2107147319 100644 --- a/drivers/input/touchscreen/pixcir_i2c_ts.c +++ b/drivers/input/touchscreen/pixcir_i2c_ts.c @@ -126,7 +126,7 @@ static void pixcir_ts_report(struct pixcir_i2c_ts_data *ts, pos[i].y = touch->y; } - input_mt_assign_slots(ts->input, slots, pos, n); + input_mt_assign_slots(ts->input, slots, pos, n, 0); } for (i = 0; i < n; i++) { diff --git a/drivers/input/touchscreen/sun4i-ts.c b/drivers/input/touchscreen/sun4i-ts.c index 28a06749ae42..b93a28b955fd 100644 --- a/drivers/input/touchscreen/sun4i-ts.c +++ b/drivers/input/touchscreen/sun4i-ts.c @@ -34,6 +34,7 @@ #include <linux/err.h> #include <linux/hwmon.h> +#include <linux/thermal.h> #include <linux/init.h> #include <linux/input.h> #include <linux/interrupt.h> @@ -71,6 +72,9 @@ #define TP_ADC_SELECT(x) ((x) << 3) #define ADC_CHAN_SELECT(x) ((x) << 0) /* 3 bits */ +/* on sun6i, bits 3~6 are left shifted by 1 to 4~7 */ +#define SUN6I_TP_MODE_EN(x) ((x) << 5) + /* TP_CTRL2 bits */ #define TP_SENSITIVE_ADJUST(x) ((x) << 28) /* 4 bits */ #define TP_MODE_SELECT(x) ((x) << 26) /* 2 bits */ @@ -107,10 +111,13 @@ struct sun4i_ts_data { struct device *dev; struct input_dev *input; + struct thermal_zone_device *tz; void __iomem *base; unsigned int irq; bool ignore_fifo_data; int temp_data; + int temp_offset; + int temp_step; }; static void sun4i_ts_irq_handle_input(struct sun4i_ts_data *ts, u32 reg_val) @@ -180,16 +187,38 @@ static void sun4i_ts_close(struct input_dev *dev) writel(TEMP_IRQ_EN(1), ts->base + TP_INT_FIFOC); } +static int sun4i_get_temp(const struct sun4i_ts_data *ts, long *temp) +{ + /* No temp_data until the first irq */ + if (ts->temp_data == -1) + return -EAGAIN; + + *temp = (ts->temp_data - ts->temp_offset) * ts->temp_step; + + return 0; +} + +static int sun4i_get_tz_temp(void *data, long *temp) +{ + return sun4i_get_temp(data, temp); +} + +static struct thermal_zone_of_device_ops sun4i_ts_tz_ops = { + .get_temp = sun4i_get_tz_temp, +}; + static ssize_t show_temp(struct device *dev, struct device_attribute *devattr, char *buf) { struct sun4i_ts_data *ts = dev_get_drvdata(dev); + long temp; + int error; - /* No temp_data until the first irq */ - if (ts->temp_data == -1) - return -EAGAIN; + error = sun4i_get_temp(ts, &temp); + if (error) + return error; - return sprintf(buf, "%d\n", (ts->temp_data - 1447) * 100); + return sprintf(buf, "%ld\n", temp); } static ssize_t show_temp_label(struct device *dev, @@ -215,6 +244,7 @@ static int sun4i_ts_probe(struct platform_device *pdev) struct device_node *np = dev->of_node; struct device *hwmon; int error; + u32 reg; bool ts_attached; ts = devm_kzalloc(dev, sizeof(struct sun4i_ts_data), GFP_KERNEL); @@ -224,6 +254,25 @@ static int sun4i_ts_probe(struct platform_device *pdev) ts->dev = dev; ts->ignore_fifo_data = true; ts->temp_data = -1; + if (of_device_is_compatible(np, "allwinner,sun6i-a31-ts")) { + /* Allwinner SDK has temperature = -271 + (value / 6) (C) */ + ts->temp_offset = 1626; + ts->temp_step = 167; + } else { + /* + * The user manuals do not contain the formula for calculating + * the temperature. The formula used here is from the AXP209, + * which is designed by X-Powers, an affiliate of Allwinner: + * + * temperature = -144.7 + (value * 0.1) + * + * Allwinner does not have any documentation whatsoever for + * this hardware. Moreover, it is claimed that the sensor + * is inaccurate and cannot work properly. + */ + ts->temp_offset = 1447; + ts->temp_step = 100; + } ts_attached = of_property_read_bool(np, "allwinner,ts-attached"); if (ts_attached) { @@ -280,20 +329,34 @@ static int sun4i_ts_probe(struct platform_device *pdev) * Set stylus up debounce to aprox 10 ms, enable debounce, and * finally enable tp mode. */ - writel(STYLUS_UP_DEBOUN(5) | STYLUS_UP_DEBOUN_EN(1) | TP_MODE_EN(1), - ts->base + TP_CTRL1); + reg = STYLUS_UP_DEBOUN(5) | STYLUS_UP_DEBOUN_EN(1); + if (of_device_is_compatible(np, "allwinner,sun4i-a10-ts")) + reg |= TP_MODE_EN(1); + else + reg |= SUN6I_TP_MODE_EN(1); + writel(reg, ts->base + TP_CTRL1); + /* + * The thermal core does not register hwmon devices for DT-based + * thermal zone sensors, such as this one. + */ hwmon = devm_hwmon_device_register_with_groups(ts->dev, "sun4i_ts", ts, sun4i_ts_groups); if (IS_ERR(hwmon)) return PTR_ERR(hwmon); + ts->tz = thermal_zone_of_sensor_register(ts->dev, 0, ts, + &sun4i_ts_tz_ops); + if (IS_ERR(ts->tz)) + ts->tz = NULL; + writel(TEMP_IRQ_EN(1), ts->base + TP_INT_FIFOC); if (ts_attached) { error = input_register_device(ts->input); if (error) { writel(0, ts->base + TP_INT_FIFOC); + thermal_zone_of_sensor_unregister(ts->dev, ts->tz); return error; } } @@ -310,6 +373,8 @@ static int sun4i_ts_remove(struct platform_device *pdev) if (ts->input) input_unregister_device(ts->input); + thermal_zone_of_sensor_unregister(ts->dev, ts->tz); + /* Deactivate all IRQs */ writel(0, ts->base + TP_INT_FIFOC); @@ -318,6 +383,7 @@ static int sun4i_ts_remove(struct platform_device *pdev) static const struct of_device_id sun4i_ts_of_match[] = { { .compatible = "allwinner,sun4i-a10-ts", }, + { .compatible = "allwinner,sun6i-a31-ts", }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, sun4i_ts_of_match); diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c index 004f1346a957..191a1b87895f 100644 --- a/drivers/input/touchscreen/ti_am335x_tsc.c +++ b/drivers/input/touchscreen/ti_am335x_tsc.c @@ -26,6 +26,7 @@ #include <linux/delay.h> #include <linux/of.h> #include <linux/of_device.h> +#include <linux/sort.h> #include <linux/mfd/ti_am335x_tscadc.h> @@ -52,6 +53,7 @@ struct titsc { u32 bit_xp, bit_xn, bit_yp, bit_yn; u32 inp_xp, inp_xn, inp_yp, inp_yn; u32 step_mask; + u32 charge_delay; }; static unsigned int titsc_readl(struct titsc *ts, unsigned int reg) @@ -121,7 +123,7 @@ static void titsc_step_config(struct titsc *ts_dev) { unsigned int config; int i; - int end_step; + int end_step, first_step, tsc_steps; u32 stepenable; config = STEPCONFIG_MODE_HWSYNC | @@ -140,9 +142,11 @@ static void titsc_step_config(struct titsc *ts_dev) break; } - /* 1 … coordinate_readouts is for X */ - end_step = ts_dev->coordinate_readouts; - for (i = 0; i < end_step; i++) { + tsc_steps = ts_dev->coordinate_readouts * 2 + 2; + first_step = TOTAL_STEPS - tsc_steps; + /* Steps 16 to 16-coordinate_readouts is for X */ + end_step = first_step + tsc_steps; + for (i = end_step - ts_dev->coordinate_readouts; i < end_step; i++) { titsc_writel(ts_dev, REG_STEPCONFIG(i), config); titsc_writel(ts_dev, REG_STEPDELAY(i), STEPCONFIG_OPENDLY); } @@ -164,22 +168,20 @@ static void titsc_step_config(struct titsc *ts_dev) break; } - /* coordinate_readouts … coordinate_readouts * 2 is for Y */ - end_step = ts_dev->coordinate_readouts * 2; - for (i = ts_dev->coordinate_readouts; i < end_step; i++) { + /* 1 ... coordinate_readouts is for Y */ + end_step = first_step + ts_dev->coordinate_readouts; + for (i = first_step; i < end_step; i++) { titsc_writel(ts_dev, REG_STEPCONFIG(i), config); titsc_writel(ts_dev, REG_STEPDELAY(i), STEPCONFIG_OPENDLY); } - /* Charge step configuration */ - config = ts_dev->bit_xp | ts_dev->bit_yn | - STEPCHARGE_RFP_XPUL | STEPCHARGE_RFM_XNUR | - STEPCHARGE_INM_AN1 | STEPCHARGE_INP(ts_dev->inp_yp); + /* Make CHARGECONFIG same as IDLECONFIG */ + config = titsc_readl(ts_dev, REG_IDLECONFIG); titsc_writel(ts_dev, REG_CHARGECONFIG, config); - titsc_writel(ts_dev, REG_CHARGEDELAY, CHARGEDLY_OPENDLY); + titsc_writel(ts_dev, REG_CHARGEDELAY, ts_dev->charge_delay); - /* coordinate_readouts * 2 … coordinate_readouts * 2 + 2 is for Z */ + /* coordinate_readouts + 1 ... coordinate_readouts + 2 is for Z */ config = STEPCONFIG_MODE_HWSYNC | STEPCONFIG_AVG_16 | ts_dev->bit_yp | ts_dev->bit_xn | STEPCONFIG_INM_ADCREFM | @@ -194,73 +196,104 @@ static void titsc_step_config(struct titsc *ts_dev) titsc_writel(ts_dev, REG_STEPDELAY(end_step), STEPCONFIG_OPENDLY); - /* The steps1 … end and bit 0 for TS_Charge */ - stepenable = (1 << (end_step + 2)) - 1; + /* The steps end ... end - readouts * 2 + 2 and bit 0 for TS_Charge */ + stepenable = 1; + for (i = 0; i < tsc_steps; i++) + stepenable |= 1 << (first_step + i + 1); + ts_dev->step_mask = stepenable; am335x_tsc_se_set_cache(ts_dev->mfd_tscadc, ts_dev->step_mask); } +static int titsc_cmp_coord(const void *a, const void *b) +{ + return *(int *)a - *(int *)b; +} + static void titsc_read_coordinates(struct titsc *ts_dev, u32 *x, u32 *y, u32 *z1, u32 *z2) { - unsigned int fifocount = titsc_readl(ts_dev, REG_FIFO0CNT); - unsigned int prev_val_x = ~0, prev_val_y = ~0; - unsigned int prev_diff_x = ~0, prev_diff_y = ~0; - unsigned int read, diff; - unsigned int i, channel; + unsigned int yvals[7], xvals[7]; + unsigned int i, xsum = 0, ysum = 0; unsigned int creads = ts_dev->coordinate_readouts; - *z1 = *z2 = 0; - if (fifocount % (creads * 2 + 2)) - fifocount -= fifocount % (creads * 2 + 2); - /* - * Delta filter is used to remove large variations in sampled - * values from ADC. The filter tries to predict where the next - * coordinate could be. This is done by taking a previous - * coordinate and subtracting it form current one. Further the - * algorithm compares the difference with that of a present value, - * if true the value is reported to the sub system. - */ - for (i = 0; i < fifocount; i++) { - read = titsc_readl(ts_dev, REG_FIFO0); - - channel = (read & 0xf0000) >> 16; - read &= 0xfff; - if (channel < creads) { - diff = abs(read - prev_val_x); - if (diff < prev_diff_x) { - prev_diff_x = diff; - *x = read; - } - prev_val_x = read; + for (i = 0; i < creads; i++) { + yvals[i] = titsc_readl(ts_dev, REG_FIFO0); + yvals[i] &= 0xfff; + } - } else if (channel < creads * 2) { - diff = abs(read - prev_val_y); - if (diff < prev_diff_y) { - prev_diff_y = diff; - *y = read; - } - prev_val_y = read; + *z1 = titsc_readl(ts_dev, REG_FIFO0); + *z1 &= 0xfff; + *z2 = titsc_readl(ts_dev, REG_FIFO0); + *z2 &= 0xfff; - } else if (channel < creads * 2 + 1) { - *z1 = read; + for (i = 0; i < creads; i++) { + xvals[i] = titsc_readl(ts_dev, REG_FIFO0); + xvals[i] &= 0xfff; + } - } else if (channel < creads * 2 + 2) { - *z2 = read; + /* + * If co-ordinates readouts is less than 4 then + * report the average. In case of 4 or more + * readouts, sort the co-ordinate samples, drop + * min and max values and report the average of + * remaining values. + */ + if (creads <= 3) { + for (i = 0; i < creads; i++) { + ysum += yvals[i]; + xsum += xvals[i]; } + ysum /= creads; + xsum /= creads; + } else { + sort(yvals, creads, sizeof(unsigned int), + titsc_cmp_coord, NULL); + sort(xvals, creads, sizeof(unsigned int), + titsc_cmp_coord, NULL); + for (i = 1; i < creads - 1; i++) { + ysum += yvals[i]; + xsum += xvals[i]; + } + ysum /= creads - 2; + xsum /= creads - 2; } + *y = ysum; + *x = xsum; } static irqreturn_t titsc_irq(int irq, void *dev) { struct titsc *ts_dev = dev; struct input_dev *input_dev = ts_dev->input; - unsigned int status, irqclr = 0; + unsigned int fsm, status, irqclr = 0; unsigned int x = 0, y = 0; unsigned int z1, z2, z; - unsigned int fsm; - status = titsc_readl(ts_dev, REG_IRQSTATUS); + status = titsc_readl(ts_dev, REG_RAWIRQSTATUS); + if (status & IRQENB_HW_PEN) { + ts_dev->pen_down = true; + titsc_writel(ts_dev, REG_IRQWAKEUP, 0x00); + titsc_writel(ts_dev, REG_IRQCLR, IRQENB_HW_PEN); + irqclr |= IRQENB_HW_PEN; + } + + if (status & IRQENB_PENUP) { + fsm = titsc_readl(ts_dev, REG_ADCFSM); + if (fsm == ADCFSM_STEPID) { + ts_dev->pen_down = false; + input_report_key(input_dev, BTN_TOUCH, 0); + input_report_abs(input_dev, ABS_PRESSURE, 0); + input_sync(input_dev); + } else { + ts_dev->pen_down = true; + } + irqclr |= IRQENB_PENUP; + } + + if (status & IRQENB_EOS) + irqclr |= IRQENB_EOS; + /* * ADC and touchscreen share the IRQ line. * FIFO1 interrupts are used by ADC. Handle FIFO0 IRQs here only @@ -291,37 +324,11 @@ static irqreturn_t titsc_irq(int irq, void *dev) } irqclr |= IRQENB_FIFO0THRES; } - - /* - * Time for sequencer to settle, to read - * correct state of the sequencer. - */ - udelay(SEQ_SETTLE); - - status = titsc_readl(ts_dev, REG_RAWIRQSTATUS); - if (status & IRQENB_PENUP) { - /* Pen up event */ - fsm = titsc_readl(ts_dev, REG_ADCFSM); - if (fsm == ADCFSM_STEPID) { - ts_dev->pen_down = false; - input_report_key(input_dev, BTN_TOUCH, 0); - input_report_abs(input_dev, ABS_PRESSURE, 0); - input_sync(input_dev); - } else { - ts_dev->pen_down = true; - } - irqclr |= IRQENB_PENUP; - } - - if (status & IRQENB_HW_PEN) { - - titsc_writel(ts_dev, REG_IRQWAKEUP, 0x00); - titsc_writel(ts_dev, REG_IRQCLR, IRQENB_HW_PEN); - } - if (irqclr) { titsc_writel(ts_dev, REG_IRQSTATUS, irqclr); - am335x_tsc_se_set_cache(ts_dev->mfd_tscadc, ts_dev->step_mask); + if (status & IRQENB_EOS) + am335x_tsc_se_set_cache(ts_dev->mfd_tscadc, + ts_dev->step_mask); return IRQ_HANDLED; } return IRQ_NONE; @@ -368,6 +375,23 @@ static int titsc_parse_dt(struct platform_device *pdev, if (err < 0) return err; + if (ts_dev->coordinate_readouts <= 0) { + dev_warn(&pdev->dev, + "invalid co-ordinate readouts, resetting it to 5\n"); + ts_dev->coordinate_readouts = 5; + } + + err = of_property_read_u32(node, "ti,charge-delay", + &ts_dev->charge_delay); + /* + * If ti,charge-delay value is not specified, then use + * CHARGEDLY_OPENDLY as the default value. + */ + if (err < 0) { + ts_dev->charge_delay = CHARGEDLY_OPENDLY; + dev_warn(&pdev->dev, "ti,charge-delay not specified\n"); + } + return of_property_read_u32_array(node, "ti,wire-config", ts_dev->config_inp, ARRAY_SIZE(ts_dev->config_inp)); } @@ -411,6 +435,7 @@ static int titsc_probe(struct platform_device *pdev) } titsc_writel(ts_dev, REG_IRQENABLE, IRQENB_FIFO0THRES); + titsc_writel(ts_dev, REG_IRQENABLE, IRQENB_EOS); err = titsc_config_wires(ts_dev); if (err) { dev_err(&pdev->dev, "wrong i/p wire configuration\n"); |