From 2d53809594afaf2ae66a90a3142c1b702fd3bcea Mon Sep 17 00:00:00 2001 From: Dirk Behme Date: Mon, 6 Jul 2015 15:57:44 -0700 Subject: Input: zforce_ts - convert to use the gpiod interface Use the new GPIO descriptor interface to handle the zForce GPIOs. This simplifies the code and allows transparently handle GPIO polarity, as specified in device tree data. Also switch to using gpio_{set|get}_value_cansleep() since none of the callers is in atomic context and cansleep variant allows more GPIO controllers to be used with the touchscreen. Signed-off-by: Dirk Behme Signed-off-by: Dmitry Torokhov --- include/linux/platform_data/zforce_ts.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/platform_data/zforce_ts.h b/include/linux/platform_data/zforce_ts.h index 0472ab2f6ede..7bdece8ef33e 100644 --- a/include/linux/platform_data/zforce_ts.h +++ b/include/linux/platform_data/zforce_ts.h @@ -16,9 +16,6 @@ #define _LINUX_INPUT_ZFORCE_TS_H struct zforce_ts_platdata { - int gpio_int; - int gpio_rst; - unsigned int x_max; unsigned int y_max; }; -- cgit v1.3-14-g43fede From 4200e831e4a8fd09fa4e78de2e571ab270c12d06 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Mon, 6 Jul 2015 15:18:24 -0700 Subject: Input: of_touchscreen - switch to using device properties Let's switch form OF to device properties so that common parsing code could work not only on device tree but also on ACPI-based platforms. Reviewed-by: Roger Quadros Signed-off-by: Dmitry Torokhov --- drivers/input/touchscreen/Kconfig | 4 +-- drivers/input/touchscreen/Makefile | 2 +- drivers/input/touchscreen/edt-ft5x06.c | 2 +- drivers/input/touchscreen/of_touchscreen.c | 56 ++++++++++++++++-------------- drivers/input/touchscreen/tsc2005.c | 2 +- include/linux/input/touchscreen.h | 11 ++---- 6 files changed, 37 insertions(+), 40 deletions(-) (limited to 'include/linux') diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index aa2b5f21b89b..27035ecbd4f5 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig @@ -11,9 +11,9 @@ menuconfig INPUT_TOUCHSCREEN if INPUT_TOUCHSCREEN -config OF_TOUCHSCREEN +config TOUCHSCREEN_PROPERTIES def_tristate INPUT - depends on INPUT && OF + depends on INPUT config TOUCHSCREEN_88PM860X tristate "Marvell 88PM860x touchscreen" diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile index fa3d33bac7fc..c85aae23e7f8 100644 --- a/drivers/input/touchscreen/Makefile +++ b/drivers/input/touchscreen/Makefile @@ -6,7 +6,7 @@ wm97xx-ts-y := wm97xx-core.o -obj-$(CONFIG_OF_TOUCHSCREEN) += of_touchscreen.o +obj-$(CONFIG_TOUCHSCREEN_PROPERTIES) += of_touchscreen.o obj-$(CONFIG_TOUCHSCREEN_88PM860X) += 88pm860x-ts.o obj-$(CONFIG_TOUCHSCREEN_AD7877) += ad7877.o obj-$(CONFIG_TOUCHSCREEN_AD7879) += ad7879.o diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c index 394b1de9a2a3..8f8f3199be39 100644 --- a/drivers/input/touchscreen/edt-ft5x06.c +++ b/drivers/input/touchscreen/edt-ft5x06.c @@ -1041,7 +1041,7 @@ static int edt_ft5x06_ts_probe(struct i2c_client *client, 0, tsdata->num_y * 64 - 1, 0, 0); if (!pdata) - touchscreen_parse_of_params(input, true); + touchscreen_parse_properties(input, true); error = input_mt_init_slots(input, MAX_SUPPORT_POINTS, INPUT_MT_DIRECT); if (error) { diff --git a/drivers/input/touchscreen/of_touchscreen.c b/drivers/input/touchscreen/of_touchscreen.c index 50bc0f219547..bb6f2fe14667 100644 --- a/drivers/input/touchscreen/of_touchscreen.c +++ b/drivers/input/touchscreen/of_touchscreen.c @@ -9,12 +9,12 @@ * */ -#include +#include #include #include #include -static bool touchscreen_get_prop_u32(struct device_node *np, +static bool touchscreen_get_prop_u32(struct device *dev, const char *property, unsigned int default_value, unsigned int *value) @@ -22,7 +22,7 @@ static bool touchscreen_get_prop_u32(struct device_node *np, u32 val; int error; - error = of_property_read_u32(np, property, &val); + error = device_property_read_u32(dev, property, &val); if (error) { *value = default_value; return false; @@ -51,54 +51,58 @@ static void touchscreen_set_params(struct input_dev *dev, } /** - * touchscreen_parse_of_params - parse common touchscreen DT properties - * @dev: device that should be parsed + * touchscreen_parse_properties - parse common touchscreen DT properties + * @input: input device that should be parsed + * @multitouch: specifies whether parsed properties should be applied to + * single-touch or multi-touch axes * * This function parses common DT properties for touchscreens and setups the - * input device accordingly. The function keeps previously setuped default + * input device accordingly. The function keeps previously set up default * values if no value is specified via DT. */ -void touchscreen_parse_of_params(struct input_dev *dev, bool multitouch) +void touchscreen_parse_properties(struct input_dev *input, bool multitouch) { - struct device_node *np = dev->dev.parent->of_node; + struct device *dev = input->dev.parent; unsigned int axis; unsigned int maximum, fuzz; bool data_present; - input_alloc_absinfo(dev); - if (!dev->absinfo) + input_alloc_absinfo(input); + if (!input->absinfo) return; axis = multitouch ? ABS_MT_POSITION_X : ABS_X; - data_present = touchscreen_get_prop_u32(np, "touchscreen-size-x", - input_abs_get_max(dev, + data_present = touchscreen_get_prop_u32(dev, "touchscreen-size-x", + input_abs_get_max(input, axis) + 1, &maximum) | - touchscreen_get_prop_u32(np, "touchscreen-fuzz-x", - input_abs_get_fuzz(dev, axis), + touchscreen_get_prop_u32(dev, "touchscreen-fuzz-x", + input_abs_get_fuzz(input, axis), &fuzz); if (data_present) - touchscreen_set_params(dev, axis, maximum - 1, fuzz); + touchscreen_set_params(input, axis, maximum - 1, fuzz); axis = multitouch ? ABS_MT_POSITION_Y : ABS_Y; - data_present = touchscreen_get_prop_u32(np, "touchscreen-size-y", - input_abs_get_max(dev, + data_present = touchscreen_get_prop_u32(dev, "touchscreen-size-y", + input_abs_get_max(input, axis) + 1, &maximum) | - touchscreen_get_prop_u32(np, "touchscreen-fuzz-y", - input_abs_get_fuzz(dev, axis), + touchscreen_get_prop_u32(dev, "touchscreen-fuzz-y", + input_abs_get_fuzz(input, axis), &fuzz); if (data_present) - touchscreen_set_params(dev, axis, maximum - 1, fuzz); + touchscreen_set_params(input, axis, maximum - 1, fuzz); axis = multitouch ? ABS_MT_PRESSURE : ABS_PRESSURE; - data_present = touchscreen_get_prop_u32(np, "touchscreen-max-pressure", - input_abs_get_max(dev, axis), + data_present = touchscreen_get_prop_u32(dev, + "touchscreen-max-pressure", + input_abs_get_max(input, axis), &maximum) | - touchscreen_get_prop_u32(np, "touchscreen-fuzz-pressure", - input_abs_get_fuzz(dev, axis), + touchscreen_get_prop_u32(dev, + "touchscreen-fuzz-pressure", + input_abs_get_fuzz(input, axis), &fuzz); if (data_present) - touchscreen_set_params(dev, axis, maximum, fuzz); + touchscreen_set_params(input, axis, maximum, fuzz); } -EXPORT_SYMBOL(touchscreen_parse_of_params); +EXPORT_SYMBOL(touchscreen_parse_properties); diff --git a/drivers/input/touchscreen/tsc2005.c b/drivers/input/touchscreen/tsc2005.c index d8c025b0f88c..aaf947525cd9 100644 --- a/drivers/input/touchscreen/tsc2005.c +++ b/drivers/input/touchscreen/tsc2005.c @@ -709,7 +709,7 @@ static int tsc2005_probe(struct spi_device *spi) input_set_abs_params(input_dev, ABS_PRESSURE, 0, max_p, fudge_p, 0); if (np) - touchscreen_parse_of_params(input_dev, false); + touchscreen_parse_properties(input_dev, false); input_dev->open = tsc2005_open; input_dev->close = tsc2005_close; diff --git a/include/linux/input/touchscreen.h b/include/linux/input/touchscreen.h index eecc9ea6cd58..c91e1376132b 100644 --- a/include/linux/input/touchscreen.h +++ b/include/linux/input/touchscreen.h @@ -9,15 +9,8 @@ #ifndef _TOUCHSCREEN_H #define _TOUCHSCREEN_H -#include +struct input_dev; -#ifdef CONFIG_OF -void touchscreen_parse_of_params(struct input_dev *dev, bool multitouch); -#else -static inline void touchscreen_parse_of_params(struct input_dev *dev, - bool multitouch) -{ -} -#endif +void touchscreen_parse_properties(struct input_dev *dev, bool multitouch); #endif -- cgit v1.3-14-g43fede From 28a74c050060c17b1edaee2d60470a33be476941 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Mon, 6 Jul 2015 11:48:47 -0700 Subject: Input: pixcir_i2c_ts - move platform data Let's move driver's platform data definitions from include/linux/input/ into include/linux/platform_data/ so that it stays with the rest of platform data definitions. Acked-by: Roger Quadros Signed-off-by: Dmitry Torokhov --- drivers/input/touchscreen/pixcir_i2c_ts.c | 2 +- include/linux/input/pixcir_ts.h | 64 ----------------------------- include/linux/platform_data/pixcir_i2c_ts.h | 64 +++++++++++++++++++++++++++++ 3 files changed, 65 insertions(+), 65 deletions(-) delete mode 100644 include/linux/input/pixcir_ts.h create mode 100644 include/linux/platform_data/pixcir_i2c_ts.h (limited to 'include/linux') diff --git a/drivers/input/touchscreen/pixcir_i2c_ts.c b/drivers/input/touchscreen/pixcir_i2c_ts.c index 2c2107147319..f7d90997a786 100644 --- a/drivers/input/touchscreen/pixcir_i2c_ts.c +++ b/drivers/input/touchscreen/pixcir_i2c_ts.c @@ -24,11 +24,11 @@ #include #include #include -#include #include #include #include #include +#include #define PIXCIR_MAX_SLOTS 5 /* Max fingers supported by driver */ diff --git a/include/linux/input/pixcir_ts.h b/include/linux/input/pixcir_ts.h deleted file mode 100644 index 7bae83b7c396..000000000000 --- a/include/linux/input/pixcir_ts.h +++ /dev/null @@ -1,64 +0,0 @@ -#ifndef _PIXCIR_I2C_TS_H -#define _PIXCIR_I2C_TS_H - -/* - * Register map - */ -#define PIXCIR_REG_POWER_MODE 51 -#define PIXCIR_REG_INT_MODE 52 - -/* - * Power modes: - * active: max scan speed - * idle: lower scan speed with automatic transition to active on touch - * halt: datasheet says sleep but this is more like halt as the chip - * clocks are cut and it can only be brought out of this mode - * using the RESET pin. - */ -enum pixcir_power_mode { - PIXCIR_POWER_ACTIVE, - PIXCIR_POWER_IDLE, - PIXCIR_POWER_HALT, -}; - -#define PIXCIR_POWER_MODE_MASK 0x03 -#define PIXCIR_POWER_ALLOW_IDLE (1UL << 2) - -/* - * Interrupt modes: - * periodical: interrupt is asserted periodicaly - * diff coordinates: interrupt is asserted when coordinates change - * level on touch: interrupt level asserted during touch - * pulse on touch: interrupt pulse asserted druing touch - * - */ -enum pixcir_int_mode { - PIXCIR_INT_PERIODICAL, - PIXCIR_INT_DIFF_COORD, - PIXCIR_INT_LEVEL_TOUCH, - PIXCIR_INT_PULSE_TOUCH, -}; - -#define PIXCIR_INT_MODE_MASK 0x03 -#define PIXCIR_INT_ENABLE (1UL << 3) -#define PIXCIR_INT_POL_HIGH (1UL << 2) - -/** - * struct pixcir_irc_chip_data - chip related data - * @max_fingers: Max number of fingers reported simultaneously by h/w - * @has_hw_ids: Hardware supports finger tracking IDs - * - */ -struct pixcir_i2c_chip_data { - u8 max_fingers; - bool has_hw_ids; -}; - -struct pixcir_ts_platform_data { - int x_max; - int y_max; - int gpio_attb; /* GPIO connected to ATTB line */ - struct pixcir_i2c_chip_data chip; -}; - -#endif diff --git a/include/linux/platform_data/pixcir_i2c_ts.h b/include/linux/platform_data/pixcir_i2c_ts.h new file mode 100644 index 000000000000..7bae83b7c396 --- /dev/null +++ b/include/linux/platform_data/pixcir_i2c_ts.h @@ -0,0 +1,64 @@ +#ifndef _PIXCIR_I2C_TS_H +#define _PIXCIR_I2C_TS_H + +/* + * Register map + */ +#define PIXCIR_REG_POWER_MODE 51 +#define PIXCIR_REG_INT_MODE 52 + +/* + * Power modes: + * active: max scan speed + * idle: lower scan speed with automatic transition to active on touch + * halt: datasheet says sleep but this is more like halt as the chip + * clocks are cut and it can only be brought out of this mode + * using the RESET pin. + */ +enum pixcir_power_mode { + PIXCIR_POWER_ACTIVE, + PIXCIR_POWER_IDLE, + PIXCIR_POWER_HALT, +}; + +#define PIXCIR_POWER_MODE_MASK 0x03 +#define PIXCIR_POWER_ALLOW_IDLE (1UL << 2) + +/* + * Interrupt modes: + * periodical: interrupt is asserted periodicaly + * diff coordinates: interrupt is asserted when coordinates change + * level on touch: interrupt level asserted during touch + * pulse on touch: interrupt pulse asserted druing touch + * + */ +enum pixcir_int_mode { + PIXCIR_INT_PERIODICAL, + PIXCIR_INT_DIFF_COORD, + PIXCIR_INT_LEVEL_TOUCH, + PIXCIR_INT_PULSE_TOUCH, +}; + +#define PIXCIR_INT_MODE_MASK 0x03 +#define PIXCIR_INT_ENABLE (1UL << 3) +#define PIXCIR_INT_POL_HIGH (1UL << 2) + +/** + * struct pixcir_irc_chip_data - chip related data + * @max_fingers: Max number of fingers reported simultaneously by h/w + * @has_hw_ids: Hardware supports finger tracking IDs + * + */ +struct pixcir_i2c_chip_data { + u8 max_fingers; + bool has_hw_ids; +}; + +struct pixcir_ts_platform_data { + int x_max; + int y_max; + int gpio_attb; /* GPIO connected to ATTB line */ + struct pixcir_i2c_chip_data chip; +}; + +#endif -- cgit v1.3-14-g43fede From cb4a5f068096c0cea954f363e70020aabb3555f4 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Mon, 6 Jul 2015 11:56:21 -0700 Subject: Input: pixcir_i2c_ts - switch the device over to gpiod This allows uniform parsing on legacy, DT and ACPI systems. Acked-by: Roger Quadros Signed-off-by: Dmitry Torokhov --- drivers/input/touchscreen/pixcir_i2c_ts.c | 26 +++++++++----------------- include/linux/platform_data/pixcir_i2c_ts.h | 1 - 2 files changed, 9 insertions(+), 18 deletions(-) (limited to 'include/linux') diff --git a/drivers/input/touchscreen/pixcir_i2c_ts.c b/drivers/input/touchscreen/pixcir_i2c_ts.c index f7d90997a786..19732b573227 100644 --- a/drivers/input/touchscreen/pixcir_i2c_ts.c +++ b/drivers/input/touchscreen/pixcir_i2c_ts.c @@ -25,8 +25,8 @@ #include #include #include +#include #include -#include #include #include @@ -35,6 +35,7 @@ struct pixcir_i2c_ts_data { struct i2c_client *client; struct input_dev *input; + struct gpio_desc *gpio_attb; const struct pixcir_ts_platform_data *pdata; bool running; int max_fingers; /* Max fingers supported in this instance */ @@ -161,7 +162,6 @@ static void pixcir_ts_report(struct pixcir_i2c_ts_data *ts, static irqreturn_t pixcir_ts_isr(int irq, void *dev_id) { struct pixcir_i2c_ts_data *tsdata = dev_id; - const struct pixcir_ts_platform_data *pdata = tsdata->pdata; struct pixcir_report_data report; while (tsdata->running) { @@ -171,7 +171,7 @@ static irqreturn_t pixcir_ts_isr(int irq, void *dev_id) /* report it */ pixcir_ts_report(tsdata, &report); - if (gpio_get_value(pdata->gpio_attb)) { + if (gpiod_get_value(tsdata->gpio_attb)) { if (report.num_touches) { /* * Last report with no finger up? @@ -427,9 +427,6 @@ static struct pixcir_ts_platform_data *pixcir_parse_dt(struct device *dev) pdata->chip = *(const struct pixcir_i2c_chip_data *)match->data; - pdata->gpio_attb = of_get_named_gpio(np, "attb-gpio", 0); - /* gpio_attb validity is checked in probe */ - if (of_property_read_u32(np, "touchscreen-size-x", &pdata->x_max)) { dev_err(dev, "Failed to get touchscreen-size-x property\n"); return ERR_PTR(-EINVAL); @@ -442,8 +439,8 @@ static struct pixcir_ts_platform_data *pixcir_parse_dt(struct device *dev) } pdata->y_max -= 1; - dev_dbg(dev, "%s: x %d, y %d, gpio %d\n", __func__, - pdata->x_max + 1, pdata->y_max + 1, pdata->gpio_attb); + dev_dbg(dev, "%s: x %d, y %d\n", __func__, + pdata->x_max + 1, pdata->y_max + 1); return pdata; } @@ -476,11 +473,6 @@ static int pixcir_i2c_ts_probe(struct i2c_client *client, return -EINVAL; } - if (!gpio_is_valid(pdata->gpio_attb)) { - dev_err(dev, "Invalid gpio_attb in pdata\n"); - return -EINVAL; - } - if (!pdata->chip.max_fingers) { dev_err(dev, "Invalid max_fingers in pdata\n"); return -EINVAL; @@ -530,10 +522,10 @@ static int pixcir_i2c_ts_probe(struct i2c_client *client, input_set_drvdata(input, tsdata); - error = devm_gpio_request_one(dev, pdata->gpio_attb, - GPIOF_DIR_IN, "pixcir_i2c_attb"); - if (error) { - dev_err(dev, "Failed to request ATTB gpio\n"); + tsdata->gpio_attb = devm_gpiod_get(dev, "attb", GPIOD_IN); + if (IS_ERR(tsdata->gpio_attb)) { + error = PTR_ERR(tsdata->gpio_attb); + dev_err(dev, "Failed to request ATTB gpio: %d\n", error); return error; } diff --git a/include/linux/platform_data/pixcir_i2c_ts.h b/include/linux/platform_data/pixcir_i2c_ts.h index 7bae83b7c396..646af6f8b838 100644 --- a/include/linux/platform_data/pixcir_i2c_ts.h +++ b/include/linux/platform_data/pixcir_i2c_ts.h @@ -57,7 +57,6 @@ struct pixcir_i2c_chip_data { struct pixcir_ts_platform_data { int x_max; int y_max; - int gpio_attb; /* GPIO connected to ATTB line */ struct pixcir_i2c_chip_data chip; }; -- cgit v1.3-14-g43fede From e1443d2849b146be4ed8d4ef89ae7e215aafaa5b Mon Sep 17 00:00:00 2001 From: Stephen Chandler Paul Date: Wed, 15 Jul 2015 10:20:17 -0700 Subject: Input: i8042 - add unmask_kbd_data option A big problem with the current i8042 debugging option is that it outputs data going to and from the keyboard by default. As a result, many dmesg logs uploaded by users will unintentionally contain sensitive information such as their password, as such it's probably a good idea not to output data coming from the keyboard unless specifically enabled by the user. Signed-off-by: Stephen Chandler Paul Reviewed-by: Andreas Mohr Reviewed-by: Benjamin Tissoires Signed-off-by: Dmitry Torokhov --- Documentation/kernel-parameters.txt | 4 ++++ drivers/input/serio/i8042.c | 43 +++++++++++++++++++++++++++++++++---- drivers/input/serio/i8042.h | 13 +++++++++++ drivers/input/serio/serio.c | 5 ++--- include/linux/serio.h | 2 ++ 5 files changed, 60 insertions(+), 7 deletions(-) (limited to 'include/linux') diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index bfcb1a62a7b4..fd0f7cd8e496 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -1274,6 +1274,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted. , i8042.debug [HW] Toggle i8042 debug mode + i8042.unmask_kbd_data + [HW] Enable printing of interrupt data from the KBD port + (disabled by default, and as a pre-condition + requires that i8042.debug=1 be enabled) i8042.direct [HW] Put keyboard port into non-translated mode i8042.dumbkbd [HW] Pretend that controller can only read data from keyboard and cannot control its state diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c index cb5ece77fd7d..c9c98f0ab284 100644 --- a/drivers/input/serio/i8042.c +++ b/drivers/input/serio/i8042.c @@ -88,6 +88,10 @@ MODULE_PARM_DESC(nopnp, "Do not use PNP to detect controller settings"); static bool i8042_debug; module_param_named(debug, i8042_debug, bool, 0600); MODULE_PARM_DESC(debug, "Turn i8042 debugging mode on and off"); + +static bool i8042_unmask_kbd_data; +module_param_named(unmask_kbd_data, i8042_unmask_kbd_data, bool, 0600); +MODULE_PARM_DESC(unmask_kbd_data, "Unconditional enable (may reveal sensitive data) of normally sanitize-filtered kbd data traffic debug log [pre-condition: i8042.debug=1 enabled]"); #endif static bool i8042_bypass_aux_irq_test; @@ -116,6 +120,7 @@ struct i8042_port { struct serio *serio; int irq; bool exists; + bool driver_bound; signed char mux; }; @@ -133,6 +138,7 @@ static bool i8042_kbd_irq_registered; static bool i8042_aux_irq_registered; static unsigned char i8042_suppress_kbd_ack; static struct platform_device *i8042_platform_device; +static struct notifier_block i8042_kbd_bind_notifier_block; static irqreturn_t i8042_interrupt(int irq, void *dev_id); static bool (*i8042_platform_filter)(unsigned char data, unsigned char str, @@ -528,10 +534,10 @@ static irqreturn_t i8042_interrupt(int irq, void *dev_id) port = &i8042_ports[port_no]; serio = port->exists ? port->serio : NULL; - dbg("%02x <- i8042 (interrupt, %d, %d%s%s)\n", - data, port_no, irq, - dfl & SERIO_PARITY ? ", bad parity" : "", - dfl & SERIO_TIMEOUT ? ", timeout" : ""); + filter_dbg(port->driver_bound, data, "<- i8042 (interrupt, %d, %d%s%s)\n", + port_no, irq, + dfl & SERIO_PARITY ? ", bad parity" : "", + dfl & SERIO_TIMEOUT ? ", timeout" : ""); filtered = i8042_filter(data, str, serio); @@ -1438,6 +1444,29 @@ static int __init i8042_setup_kbd(void) return error; } +static int i8042_kbd_bind_notifier(struct notifier_block *nb, + unsigned long action, void *data) +{ + struct device *dev = data; + struct serio *serio = to_serio_port(dev); + struct i8042_port *port = serio->port_data; + + if (serio != i8042_ports[I8042_KBD_PORT_NO].serio) + return 0; + + switch (action) { + case BUS_NOTIFY_BOUND_DRIVER: + port->driver_bound = true; + break; + + case BUS_NOTIFY_UNBIND_DRIVER: + port->driver_bound = false; + break; + } + + return 0; +} + static int __init i8042_probe(struct platform_device *dev) { int error; @@ -1507,6 +1536,10 @@ static struct platform_driver i8042_driver = { .shutdown = i8042_shutdown, }; +static struct notifier_block i8042_kbd_bind_notifier_block = { + .notifier_call = i8042_kbd_bind_notifier, +}; + static int __init i8042_init(void) { struct platform_device *pdev; @@ -1528,6 +1561,7 @@ static int __init i8042_init(void) goto err_platform_exit; } + bus_register_notifier(&serio_bus, &i8042_kbd_bind_notifier_block); panic_blink = i8042_panic_blink; return 0; @@ -1543,6 +1577,7 @@ static void __exit i8042_exit(void) platform_driver_unregister(&i8042_driver); i8042_platform_exit(); + bus_unregister_notifier(&serio_bus, &i8042_kbd_bind_notifier_block); panic_blink = NULL; } diff --git a/drivers/input/serio/i8042.h b/drivers/input/serio/i8042.h index fc080beffedc..1db0a40c9bab 100644 --- a/drivers/input/serio/i8042.h +++ b/drivers/input/serio/i8042.h @@ -73,6 +73,17 @@ static unsigned long i8042_start_time; printk(KERN_DEBUG KBUILD_MODNAME ": [%d] " format, \ (int) (jiffies - i8042_start_time), ##arg); \ } while (0) + +#define filter_dbg(filter, data, format, args...) \ + do { \ + if (!i8042_debug) \ + break; \ + \ + if (!filter || i8042_unmask_kbd_data) \ + dbg("%02x " format, data, ##args); \ + else \ + dbg("** " format, ##args); \ + } while (0) #else #define dbg_init() do { } while (0) #define dbg(format, arg...) \ @@ -80,6 +91,8 @@ static unsigned long i8042_start_time; if (0) \ printk(KERN_DEBUG pr_fmt(format), ##arg); \ } while (0) + +#define filter_dbg(filter, data, format, args...) do { } while (0) #endif #endif /* _I8042_H */ diff --git a/drivers/input/serio/serio.c b/drivers/input/serio/serio.c index a05a5179da32..8f828975ab10 100644 --- a/drivers/input/serio/serio.c +++ b/drivers/input/serio/serio.c @@ -49,8 +49,6 @@ static DEFINE_MUTEX(serio_mutex); static LIST_HEAD(serio_list); -static struct bus_type serio_bus; - static void serio_add_port(struct serio *serio); static int serio_reconnect_port(struct serio *serio); static void serio_disconnect_port(struct serio *serio); @@ -1017,7 +1015,7 @@ irqreturn_t serio_interrupt(struct serio *serio, } EXPORT_SYMBOL(serio_interrupt); -static struct bus_type serio_bus = { +struct bus_type serio_bus = { .name = "serio", .drv_groups = serio_driver_groups, .match = serio_bus_match, @@ -1029,6 +1027,7 @@ static struct bus_type serio_bus = { .pm = &serio_pm_ops, #endif }; +EXPORT_SYMBOL(serio_bus); static int __init serio_init(void) { diff --git a/include/linux/serio.h b/include/linux/serio.h index 9f779c7a2da4..df4ab5de1586 100644 --- a/include/linux/serio.h +++ b/include/linux/serio.h @@ -18,6 +18,8 @@ #include #include +extern struct bus_type serio_bus; + struct serio { void *port_data; -- cgit v1.3-14-g43fede From 7f3884f7de89c49439fdaa115f6d1caec3256cc3 Mon Sep 17 00:00:00 2001 From: Nick Dyer Date: Tue, 4 Aug 2015 16:36:29 -0700 Subject: Input: atmel_mxt_ts - use deep sleep mode when stopped The hardcoded 0x83 CTRL setting overrides other settings in that byte, enabling extra reporting that may not be useful on a particular platform. Implement improved suspend mechanism via deep sleep. By writing zero to both the active and idle cycle times the maXTouch device can be put into a deep sleep mode, using minimal power. It is necessary to issue a calibrate command after the chip has spent any time in deep sleep, however a soft reset is unnecessary. Use the old method on Chromebook Pixel via platform data option. This patch also deals with the situation where the power configuration is zero on probe, which would mean that the device never wakes up to execute commands. After a config download, the T7 power configuration may have changed so it is necessary to re-read it. Signed-off-by: Nick Dyer Acked-by: Benson Leung Acked-by: Yufeng Shen Signed-off-by: Dmitry Torokhov --- drivers/input/touchscreen/atmel_mxt_ts.c | 119 ++++++++++++++++++++++++++--- drivers/platform/chrome/chromeos_laptop.c | 4 +- include/linux/i2c/atmel_mxt_ts.h | 25 ------ include/linux/platform_data/atmel_mxt_ts.h | 31 ++++++++ 4 files changed, 142 insertions(+), 37 deletions(-) delete mode 100644 include/linux/i2c/atmel_mxt_ts.h create mode 100644 include/linux/platform_data/atmel_mxt_ts.h (limited to 'include/linux') diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c index 8efe7a002f1e..0e743b3a691b 100644 --- a/drivers/input/touchscreen/atmel_mxt_ts.c +++ b/drivers/input/touchscreen/atmel_mxt_ts.c @@ -22,7 +22,7 @@ #include #include #include -#include +#include #include #include #include @@ -103,9 +103,13 @@ #define MXT_T6_STATUS_COMSERR (1 << 2) /* MXT_GEN_POWER_T7 field */ -#define MXT_POWER_IDLEACQINT 0 -#define MXT_POWER_ACTVACQINT 1 -#define MXT_POWER_ACTV2IDLETO 2 +struct t7_config { + u8 idle; + u8 active; +} __packed; + +#define MXT_POWER_CFG_RUN 0 +#define MXT_POWER_CFG_DEEPSLEEP 1 /* MXT_GEN_ACQUIRE_T8 field */ #define MXT_ACQUIRE_CHRGTIME 0 @@ -117,7 +121,7 @@ #define MXT_ACQUIRE_ATCHCALSTHR 7 /* MXT_TOUCH_MULTI_T9 field */ -#define MXT_TOUCH_CTRL 0 +#define MXT_T9_CTRL 0 #define MXT_T9_ORIENT 9 #define MXT_T9_RANGE 18 @@ -291,6 +295,7 @@ struct mxt_data { u8 last_message_count; u8 num_touchids; u8 multitouch; + struct t7_config t7_cfg; /* Cached parameters from object table */ u16 T5_address; @@ -1361,6 +1366,8 @@ static int mxt_upload_cfg_mem(struct mxt_data *data, unsigned int cfg_start, return 0; } +static int mxt_init_t7_power_cfg(struct mxt_data *data); + /* * mxt_update_cfg - download configuration to chip * @@ -1508,6 +1515,9 @@ static int mxt_update_cfg(struct mxt_data *data, const struct firmware *cfg) dev_info(dev, "Config successfully updated\n"); + /* T7 config may have changed */ + mxt_init_t7_power_cfg(data); + release_mem: kfree(config_mem); return ret; @@ -2051,6 +2061,60 @@ 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) { @@ -2058,6 +2122,12 @@ static int mxt_configure_objects(struct mxt_data *data, struct mxt_info *info = &data->info; int error; + error = mxt_init_t7_power_cfg(data); + if (error) { + dev_err(dev, "Failed to initialize power cfg\n"); + return error; + } + if (cfg) { error = mxt_update_cfg(data, cfg); if (error) @@ -2346,14 +2416,41 @@ static const struct attribute_group mxt_attr_group = { static void mxt_start(struct mxt_data *data) { - /* Touch enable */ - mxt_write_object(data, data->multitouch, MXT_TOUCH_CTRL, 0x83); + switch (data->pdata->suspend_mode) { + case MXT_SUSPEND_T9_CTRL: + mxt_soft_reset(data); + + /* Touch enable */ + /* 0x83 = SCANEN | RPTEN | ENABLE */ + mxt_write_object(data, + MXT_TOUCH_MULTI_T9, MXT_T9_CTRL, 0x83); + break; + + case MXT_SUSPEND_DEEP_SLEEP: + default: + 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); + break; + } + } static void mxt_stop(struct mxt_data *data) { - /* Touch disable */ - mxt_write_object(data, data->multitouch, MXT_TOUCH_CTRL, 0); + switch (data->pdata->suspend_mode) { + case MXT_SUSPEND_T9_CTRL: + /* Touch disable */ + mxt_write_object(data, + MXT_TOUCH_MULTI_T9, MXT_T9_CTRL, 0); + break; + + case MXT_SUSPEND_DEEP_SLEEP: + default: + mxt_set_t7_power_cfg(data, MXT_POWER_CFG_DEEPSLEEP); + break; + } } static int mxt_input_open(struct input_dev *dev) @@ -2409,6 +2506,8 @@ static const struct mxt_platform_data *mxt_parse_dt(struct i2c_client *client) pdata->t19_keymap = keymap; } + pdata->suspend_mode = MXT_SUSPEND_DEEP_SLEEP; + return pdata; } #else @@ -2625,8 +2724,6 @@ 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/platform/chrome/chromeos_laptop.c b/drivers/platform/chrome/chromeos_laptop.c index a04019ab9feb..02072749fff3 100644 --- a/drivers/platform/chrome/chromeos_laptop.c +++ b/drivers/platform/chrome/chromeos_laptop.c @@ -23,7 +23,7 @@ #include #include -#include +#include #include #include #include @@ -111,6 +111,7 @@ static struct mxt_platform_data atmel_224s_tp_platform_data = { .irqflags = IRQF_TRIGGER_FALLING, .t19_num_keys = ARRAY_SIZE(mxt_t19_keys), .t19_keymap = mxt_t19_keys, + .suspend_mode = MXT_SUSPEND_T9_CTRL, }; static struct i2c_board_info atmel_224s_tp_device = { @@ -121,6 +122,7 @@ static struct i2c_board_info atmel_224s_tp_device = { static struct mxt_platform_data atmel_1664s_platform_data = { .irqflags = IRQF_TRIGGER_FALLING, + .suspend_mode = MXT_SUSPEND_T9_CTRL, }; static struct i2c_board_info atmel_1664s_device = { diff --git a/include/linux/i2c/atmel_mxt_ts.h b/include/linux/i2c/atmel_mxt_ts.h deleted file mode 100644 index 02bf6ea31701..000000000000 --- a/include/linux/i2c/atmel_mxt_ts.h +++ /dev/null @@ -1,25 +0,0 @@ -/* - * Atmel maXTouch Touchscreen driver - * - * Copyright (C) 2010 Samsung Electronics Co.Ltd - * Author: Joonyoung Shim - * - * 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. - */ - -#ifndef __LINUX_ATMEL_MXT_TS_H -#define __LINUX_ATMEL_MXT_TS_H - -#include - -/* The platform data for the Atmel maXTouch touchscreen driver */ -struct mxt_platform_data { - unsigned long irqflags; - u8 t19_num_keys; - const unsigned int *t19_keymap; -}; - -#endif /* __LINUX_ATMEL_MXT_TS_H */ diff --git a/include/linux/platform_data/atmel_mxt_ts.h b/include/linux/platform_data/atmel_mxt_ts.h new file mode 100644 index 000000000000..695035a8d7fb --- /dev/null +++ b/include/linux/platform_data/atmel_mxt_ts.h @@ -0,0 +1,31 @@ +/* + * Atmel maXTouch Touchscreen driver + * + * Copyright (C) 2010 Samsung Electronics Co.Ltd + * Author: Joonyoung Shim + * + * 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. + */ + +#ifndef __LINUX_PLATFORM_DATA_ATMEL_MXT_TS_H +#define __LINUX_PLATFORM_DATA_ATMEL_MXT_TS_H + +#include + +enum mxt_suspend_mode { + MXT_SUSPEND_DEEP_SLEEP = 0, + MXT_SUSPEND_T9_CTRL = 1, +}; + +/* The platform data for the Atmel maXTouch touchscreen driver */ +struct mxt_platform_data { + unsigned long irqflags; + u8 t19_num_keys; + const unsigned int *t19_keymap; + enum mxt_suspend_mode suspend_mode; +}; + +#endif /* __LINUX_PLATFORM_DATA_ATMEL_MXT_TS_H */ -- cgit v1.3-14-g43fede