diff options
Diffstat (limited to 'drivers/input/misc')
29 files changed, 3080 insertions, 136 deletions
diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig index dd5227cf8696..9f088900f863 100644 --- a/drivers/input/misc/Kconfig +++ b/drivers/input/misc/Kconfig @@ -730,6 +730,24 @@ config INPUT_ADXL34X_SPI To compile this driver as a module, choose M here: the module will be called adxl34x-spi. +config INPUT_IBM_PANEL + tristate "IBM Operation Panel driver" + depends on I2C && I2C_SLAVE + help + Say Y here if you have an IBM Operation Panel connected to your system + over I2C. The panel is typically connected only to a system's service + processor (BMC). + + If unsure, say N. + + The Operation Panel is a controller with some buttons and an LCD + display that allows someone with physical access to the system to + perform various administrative tasks. This driver only supports the part + of the controller that sends commands to the system. + + To compile this driver as a module, choose M here: the module will be + called ibm-panel. + config INPUT_IMS_PCU tristate "IMS Passenger Control Unit driver" depends on USB @@ -762,6 +780,16 @@ config INPUT_IQS626A To compile this driver as a module, choose M here: the module will be called iqs626a. +config INPUT_IQS7222 + tristate "Azoteq IQS7222A/B/C capacitive touch controller" + depends on I2C + help + Say Y to enable support for the Azoteq IQS7222A/B/C family + of capacitive touch controllers. + + To compile this driver as a module, choose M here: the + module will be called iqs7222. + config INPUT_CMA3000 tristate "VTI CMA3000 Tri-axis accelerometer" help @@ -881,6 +909,15 @@ config INPUT_SC27XX_VIBRA To compile this driver as a module, choose M here. The module will be called sc27xx_vibra. +config INPUT_RT5120_PWRKEY + tristate "RT5120 PMIC power key support" + depends on MFD_RT5120 || COMPILE_TEST + help + This enables support for RT5120 PMIC power key driver. + + To compile this driver as a module, choose M here. the module will + be called rt5120-pwrkey. + config INPUT_STPMIC1_ONKEY tristate "STPMIC1 PMIC Onkey support" depends on MFD_STPMIC1 diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile index b92c53a6b5ae..6abefc41037b 100644 --- a/drivers/input/misc/Makefile +++ b/drivers/input/misc/Makefile @@ -41,9 +41,11 @@ obj-$(CONFIG_INPUT_GPIO_DECODER) += gpio_decoder.o obj-$(CONFIG_INPUT_GPIO_VIBRA) += gpio-vibra.o obj-$(CONFIG_INPUT_HISI_POWERKEY) += hisi_powerkey.o obj-$(CONFIG_HP_SDC_RTC) += hp_sdc_rtc.o +obj-$(CONFIG_INPUT_IBM_PANEL) += ibm-panel.o obj-$(CONFIG_INPUT_IMS_PCU) += ims-pcu.o obj-$(CONFIG_INPUT_IQS269A) += iqs269a.o obj-$(CONFIG_INPUT_IQS626A) += iqs626a.o +obj-$(CONFIG_INPUT_IQS7222) += iqs7222.o obj-$(CONFIG_INPUT_KEYSPAN_REMOTE) += keyspan_remote.o obj-$(CONFIG_INPUT_KXTJ9) += kxtj9.o obj-$(CONFIG_INPUT_M68K_BEEP) += m68kspkr.o @@ -68,6 +70,7 @@ obj-$(CONFIG_INPUT_RAVE_SP_PWRBUTTON) += rave-sp-pwrbutton.o obj-$(CONFIG_INPUT_RB532_BUTTON) += rb532_button.o obj-$(CONFIG_INPUT_REGULATOR_HAPTIC) += regulator-haptic.o obj-$(CONFIG_INPUT_RETU_PWRBUTTON) += retu-pwrbutton.o +obj-$(CONFIG_INPUT_RT5120_PWRKEY) += rt5120-pwrkey.o obj-$(CONFIG_INPUT_AXP20X_PEK) += axp20x-pek.o obj-$(CONFIG_INPUT_GPIO_ROTARY_ENCODER) += rotary_encoder.o obj-$(CONFIG_INPUT_RK805_PWRKEY) += rk805-pwrkey.o diff --git a/drivers/input/misc/adxl34x-i2c.c b/drivers/input/misc/adxl34x-i2c.c index a3b5f88d2bd1..5be636aaa94f 100644 --- a/drivers/input/misc/adxl34x-i2c.c +++ b/drivers/input/misc/adxl34x-i2c.c @@ -99,13 +99,11 @@ static int adxl34x_i2c_probe(struct i2c_client *client, return 0; } -static int adxl34x_i2c_remove(struct i2c_client *client) +static void adxl34x_i2c_remove(struct i2c_client *client) { struct adxl34x *ac = i2c_get_clientdata(client); adxl34x_remove(ac); - - return 0; } static int __maybe_unused adxl34x_i2c_suspend(struct device *dev) diff --git a/drivers/input/misc/adxl34x-spi.c b/drivers/input/misc/adxl34x-spi.c index 6e51c9bc619f..91e44d4c66f7 100644 --- a/drivers/input/misc/adxl34x-spi.c +++ b/drivers/input/misc/adxl34x-spi.c @@ -87,13 +87,11 @@ static int adxl34x_spi_probe(struct spi_device *spi) return 0; } -static int adxl34x_spi_remove(struct spi_device *spi) +static void adxl34x_spi_remove(struct spi_device *spi) { struct adxl34x *ac = spi_get_drvdata(spi); adxl34x_remove(ac); - - return 0; } static int __maybe_unused adxl34x_spi_suspend(struct device *dev) diff --git a/drivers/input/misc/ati_remote2.c b/drivers/input/misc/ati_remote2.c index 8a36d78fed63..946bf75aa106 100644 --- a/drivers/input/misc/ati_remote2.c +++ b/drivers/input/misc/ati_remote2.c @@ -639,7 +639,7 @@ static int ati_remote2_urb_init(struct ati_remote2 *ar2) return -ENOMEM; pipe = usb_rcvintpipe(udev, ar2->ep[i]->bEndpointAddress); - maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe)); + maxp = usb_maxpacket(udev, pipe); maxp = maxp > 4 ? 4 : maxp; usb_fill_int_urb(ar2->urb[i], udev, pipe, ar2->buf[i], maxp, diff --git a/drivers/input/misc/axp20x-pek.c b/drivers/input/misc/axp20x-pek.c index e09b1fae42e1..04da7916eb70 100644 --- a/drivers/input/misc/axp20x-pek.c +++ b/drivers/input/misc/axp20x-pek.c @@ -206,11 +206,8 @@ ATTRIBUTE_GROUPS(axp20x); static irqreturn_t axp20x_pek_irq(int irq, void *pwr) { - struct axp20x_pek *axp20x_pek = pwr; - struct input_dev *idev = axp20x_pek->input; - - if (!idev) - return IRQ_HANDLED; + struct input_dev *idev = pwr; + struct axp20x_pek *axp20x_pek = input_get_drvdata(idev); /* * The power-button is connected to ground so a falling edge (dbf) @@ -229,9 +226,22 @@ static irqreturn_t axp20x_pek_irq(int irq, void *pwr) static int axp20x_pek_probe_input_device(struct axp20x_pek *axp20x_pek, struct platform_device *pdev) { + struct axp20x_dev *axp20x = axp20x_pek->axp20x; struct input_dev *idev; int error; + axp20x_pek->irq_dbr = platform_get_irq_byname(pdev, "PEK_DBR"); + if (axp20x_pek->irq_dbr < 0) + 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) + 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; @@ -246,6 +256,24 @@ static int axp20x_pek_probe_input_device(struct axp20x_pek *axp20x_pek, 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(&pdev->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(&pdev->dev, "Failed to request dbf IRQ#%d: %d\n", + axp20x_pek->irq_dbf, error); + return error; + } + error = input_register_device(idev); if (error) { dev_err(&pdev->dev, "Can't register input device: %d\n", @@ -253,6 +281,8 @@ static int axp20x_pek_probe_input_device(struct axp20x_pek *axp20x_pek, return error; } + device_init_wakeup(&pdev->dev, true); + return 0; } @@ -293,18 +323,6 @@ static int axp20x_pek_probe(struct platform_device *pdev) axp20x_pek->axp20x = dev_get_drvdata(pdev->dev.parent); - axp20x_pek->irq_dbr = platform_get_irq_byname(pdev, "PEK_DBR"); - if (axp20x_pek->irq_dbr < 0) - return axp20x_pek->irq_dbr; - axp20x_pek->irq_dbr = regmap_irq_get_virq( - axp20x_pek->axp20x->regmap_irqc, axp20x_pek->irq_dbr); - - axp20x_pek->irq_dbf = platform_get_irq_byname(pdev, "PEK_DBF"); - if (axp20x_pek->irq_dbf < 0) - return axp20x_pek->irq_dbf; - axp20x_pek->irq_dbf = regmap_irq_get_virq( - axp20x_pek->axp20x->regmap_irqc, axp20x_pek->irq_dbf); - if (axp20x_pek_should_register_input(axp20x_pek)) { error = axp20x_pek_probe_input_device(axp20x_pek, pdev); if (error) @@ -313,26 +331,6 @@ static int axp20x_pek_probe(struct platform_device *pdev) axp20x_pek->info = (struct axp20x_info *)match->driver_data; - error = devm_request_any_context_irq(&pdev->dev, axp20x_pek->irq_dbr, - axp20x_pek_irq, 0, - "axp20x-pek-dbr", axp20x_pek); - if (error < 0) { - dev_err(&pdev->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", axp20x_pek); - if (error < 0) { - dev_err(&pdev->dev, "Failed to request dbf IRQ#%d: %d\n", - axp20x_pek->irq_dbf, error); - return error; - } - - device_init_wakeup(&pdev->dev, true); - platform_set_drvdata(pdev, axp20x_pek); return 0; diff --git a/drivers/input/misc/bma150.c b/drivers/input/misc/bma150.c index a9d984da95f3..84fe394da7a6 100644 --- a/drivers/input/misc/bma150.c +++ b/drivers/input/misc/bma150.c @@ -513,11 +513,9 @@ static int bma150_probe(struct i2c_client *client, return 0; } -static int bma150_remove(struct i2c_client *client) +static void bma150_remove(struct i2c_client *client) { pm_runtime_disable(&client->dev); - - return 0; } static int __maybe_unused bma150_suspend(struct device *dev) diff --git a/drivers/input/misc/cm109.c b/drivers/input/misc/cm109.c index f515fae465c3..728325a2d574 100644 --- a/drivers/input/misc/cm109.c +++ b/drivers/input/misc/cm109.c @@ -745,7 +745,7 @@ static int cm109_usb_probe(struct usb_interface *intf, /* get a handle to the interrupt data pipe */ pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress); - ret = usb_maxpacket(udev, pipe, usb_pipeout(pipe)); + ret = usb_maxpacket(udev, pipe); if (ret != USB_PKT_LEN) dev_err(&intf->dev, "invalid payload size %d, expected %d\n", ret, USB_PKT_LEN); diff --git a/drivers/input/misc/cma3000_d0x_i2c.c b/drivers/input/misc/cma3000_d0x_i2c.c index 03fb49127c3a..3b23210c46b7 100644 --- a/drivers/input/misc/cma3000_d0x_i2c.c +++ b/drivers/input/misc/cma3000_d0x_i2c.c @@ -58,13 +58,11 @@ static int cma3000_i2c_probe(struct i2c_client *client, return 0; } -static int cma3000_i2c_remove(struct i2c_client *client) +static void cma3000_i2c_remove(struct i2c_client *client) { struct cma3000_accl_data *data = i2c_get_clientdata(client); cma3000_exit(data); - - return 0; } #ifdef CONFIG_PM diff --git a/drivers/input/misc/da9063_onkey.c b/drivers/input/misc/da9063_onkey.c index 79851923ee57..b14a389600c9 100644 --- a/drivers/input/misc/da9063_onkey.c +++ b/drivers/input/misc/da9063_onkey.c @@ -4,6 +4,7 @@ * Copyright (C) 2015 Dialog Semiconductor Ltd. */ +#include <linux/devm-helpers.h> #include <linux/module.h> #include <linux/errno.h> #include <linux/input.h> @@ -182,13 +183,6 @@ static irqreturn_t da9063_onkey_irq_handler(int irq, void *data) return IRQ_HANDLED; } -static void da9063_cancel_poll(void *data) -{ - struct da9063_onkey *onkey = data; - - cancel_delayed_work_sync(&onkey->work); -} - static int da9063_onkey_probe(struct platform_device *pdev) { struct da9063_onkey *onkey; @@ -234,9 +228,8 @@ static int da9063_onkey_probe(struct platform_device *pdev) input_set_capability(onkey->input, EV_KEY, KEY_POWER); - INIT_DELAYED_WORK(&onkey->work, da9063_poll_on); - - error = devm_add_action(&pdev->dev, da9063_cancel_poll, onkey); + error = devm_delayed_work_autocancel(&pdev->dev, &onkey->work, + da9063_poll_on); if (error) { dev_err(&pdev->dev, "Failed to add cancel poll action: %d\n", diff --git a/drivers/input/misc/gpio_decoder.c b/drivers/input/misc/gpio_decoder.c index 145826a1a9a1..ee668eba302f 100644 --- a/drivers/input/misc/gpio_decoder.c +++ b/drivers/input/misc/gpio_decoder.c @@ -1,15 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2016 Texas Instruments Incorporated - http://www.ti.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 version 2. - * - * 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. - * * A generic driver to read multiple gpio lines and translate the * encoded numeric value into an input event. */ diff --git a/drivers/input/misc/ibm-panel.c b/drivers/input/misc/ibm-panel.c new file mode 100644 index 000000000000..a8fba0054719 --- /dev/null +++ b/drivers/input/misc/ibm-panel.c @@ -0,0 +1,200 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) IBM Corporation 2020 + */ + +#include <linux/i2c.h> +#include <linux/init.h> +#include <linux/input.h> +#include <linux/kernel.h> +#include <linux/limits.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/spinlock.h> + +#define DEVICE_NAME "ibm-panel" +#define PANEL_KEYCODES_COUNT 3 + +struct ibm_panel { + u8 idx; + u8 command[11]; + u32 keycodes[PANEL_KEYCODES_COUNT]; + spinlock_t lock; /* protects writes to idx and command */ + struct input_dev *input; +}; + +static u8 ibm_panel_calculate_checksum(struct ibm_panel *panel) +{ + u8 chksum; + u16 sum = 0; + unsigned int i; + + for (i = 0; i < sizeof(panel->command) - 1; ++i) { + sum += panel->command[i]; + if (sum & 0xff00) { + sum &= 0xff; + sum++; + } + } + + chksum = sum & 0xff; + chksum = ~chksum; + chksum++; + + return chksum; +} + +static void ibm_panel_process_command(struct ibm_panel *panel) +{ + u8 button; + u8 chksum; + + if (panel->command[0] != 0xff && panel->command[1] != 0xf0) { + dev_dbg(&panel->input->dev, "command invalid: %02x %02x\n", + panel->command[0], panel->command[1]); + return; + } + + chksum = ibm_panel_calculate_checksum(panel); + if (chksum != panel->command[sizeof(panel->command) - 1]) { + dev_dbg(&panel->input->dev, + "command failed checksum: %u != %u\n", chksum, + panel->command[sizeof(panel->command) - 1]); + return; + } + + button = panel->command[2] & 0xf; + if (button < PANEL_KEYCODES_COUNT) { + input_report_key(panel->input, panel->keycodes[button], + !(panel->command[2] & 0x80)); + input_sync(panel->input); + } else { + dev_dbg(&panel->input->dev, "unknown button %u\n", + button); + } +} + +static int ibm_panel_i2c_slave_cb(struct i2c_client *client, + enum i2c_slave_event event, u8 *val) +{ + unsigned long flags; + struct ibm_panel *panel = i2c_get_clientdata(client); + + dev_dbg(&panel->input->dev, "event: %u data: %02x\n", event, *val); + + spin_lock_irqsave(&panel->lock, flags); + + switch (event) { + case I2C_SLAVE_STOP: + if (panel->idx == sizeof(panel->command)) + ibm_panel_process_command(panel); + else + dev_dbg(&panel->input->dev, + "command incorrect size %u\n", panel->idx); + fallthrough; + case I2C_SLAVE_WRITE_REQUESTED: + panel->idx = 0; + break; + case I2C_SLAVE_WRITE_RECEIVED: + if (panel->idx < sizeof(panel->command)) + panel->command[panel->idx++] = *val; + else + /* + * The command is too long and therefore invalid, so set the index + * to it's largest possible value. When a STOP is finally received, + * the command will be rejected upon processing. + */ + panel->idx = U8_MAX; + break; + case I2C_SLAVE_READ_REQUESTED: + case I2C_SLAVE_READ_PROCESSED: + *val = 0xff; + break; + default: + break; + } + + spin_unlock_irqrestore(&panel->lock, flags); + + return 0; +} + +static int ibm_panel_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct ibm_panel *panel; + int i; + int error; + + panel = devm_kzalloc(&client->dev, sizeof(*panel), GFP_KERNEL); + if (!panel) + return -ENOMEM; + + spin_lock_init(&panel->lock); + + panel->input = devm_input_allocate_device(&client->dev); + if (!panel->input) + return -ENOMEM; + + panel->input->name = client->name; + panel->input->id.bustype = BUS_I2C; + + error = device_property_read_u32_array(&client->dev, + "linux,keycodes", + panel->keycodes, + PANEL_KEYCODES_COUNT); + if (error) { + /* + * Use gamepad buttons as defaults for compatibility with + * existing applications. + */ + panel->keycodes[0] = BTN_NORTH; + panel->keycodes[1] = BTN_SOUTH; + panel->keycodes[2] = BTN_SELECT; + } + + for (i = 0; i < PANEL_KEYCODES_COUNT; ++i) + input_set_capability(panel->input, EV_KEY, panel->keycodes[i]); + + error = input_register_device(panel->input); + if (error) { + dev_err(&client->dev, + "Failed to register input device: %d\n", error); + return error; + } + + i2c_set_clientdata(client, panel); + error = i2c_slave_register(client, ibm_panel_i2c_slave_cb); + if (error) { + dev_err(&client->dev, + "Failed to register as i2c slave: %d\n", error); + return error; + } + + return 0; +} + +static void ibm_panel_remove(struct i2c_client *client) +{ + i2c_slave_unregister(client); +} + +static const struct of_device_id ibm_panel_match[] = { + { .compatible = "ibm,op-panel" }, + { } +}; +MODULE_DEVICE_TABLE(of, ibm_panel_match); + +static struct i2c_driver ibm_panel_driver = { + .driver = { + .name = DEVICE_NAME, + .of_match_table = ibm_panel_match, + }, + .probe = ibm_panel_probe, + .remove = ibm_panel_remove, +}; +module_i2c_driver(ibm_panel_driver); + +MODULE_AUTHOR("Eddie James <eajames@linux.ibm.com>"); +MODULE_DESCRIPTION("IBM Operation Panel Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/input/misc/ims-pcu.c b/drivers/input/misc/ims-pcu.c index 6f38aa23a1ff..b2f1292e27ef 100644 --- a/drivers/input/misc/ims-pcu.c +++ b/drivers/input/misc/ims-pcu.c @@ -744,7 +744,7 @@ static int ims_pcu_switch_to_bootloader(struct ims_pcu *pcu) error = ims_pcu_execute_command(pcu, JUMP_TO_BTLDR, NULL, 0); if (error) { dev_err(pcu->dev, - "Failure when sending JUMP TO BOOLTLOADER command, error: %d\n", + "Failure when sending JUMP TO BOOTLOADER command, error: %d\n", error); return error; } diff --git a/drivers/input/misc/iqs626a.c b/drivers/input/misc/iqs626a.c index d57e996732cf..23b5dd9552dc 100644 --- a/drivers/input/misc/iqs626a.c +++ b/drivers/input/misc/iqs626a.c @@ -456,9 +456,10 @@ struct iqs626_private { unsigned int suspend_mode; }; -static int iqs626_parse_events(struct iqs626_private *iqs626, - const struct fwnode_handle *ch_node, - enum iqs626_ch_id ch_id) +static noinline_for_stack int +iqs626_parse_events(struct iqs626_private *iqs626, + const struct fwnode_handle *ch_node, + enum iqs626_ch_id ch_id) { struct iqs626_sys_reg *sys_reg = &iqs626->sys_reg; struct i2c_client *client = iqs626->client; @@ -604,9 +605,10 @@ static int iqs626_parse_events(struct iqs626_private *iqs626, return 0; } -static int iqs626_parse_ati_target(struct iqs626_private *iqs626, - const struct fwnode_handle *ch_node, - enum iqs626_ch_id ch_id) +static noinline_for_stack int +iqs626_parse_ati_target(struct iqs626_private *iqs626, + const struct fwnode_handle *ch_node, + enum iqs626_ch_id ch_id) { struct iqs626_sys_reg *sys_reg = &iqs626->sys_reg; struct i2c_client *client = iqs626->client; @@ -885,9 +887,10 @@ static int iqs626_parse_trackpad(struct iqs626_private *iqs626, return 0; } -static int iqs626_parse_channel(struct iqs626_private *iqs626, - const struct fwnode_handle *ch_node, - enum iqs626_ch_id ch_id) +static noinline_for_stack int +iqs626_parse_channel(struct iqs626_private *iqs626, + const struct fwnode_handle *ch_node, + enum iqs626_ch_id ch_id) { struct iqs626_sys_reg *sys_reg = &iqs626->sys_reg; struct i2c_client *client = iqs626->client; diff --git a/drivers/input/misc/iqs7222.c b/drivers/input/misc/iqs7222.c new file mode 100644 index 000000000000..ddb863bf63ee --- /dev/null +++ b/drivers/input/misc/iqs7222.c @@ -0,0 +1,2504 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Azoteq IQS7222A/B/C Capacitive Touch Controller + * + * Copyright (C) 2022 Jeff LaBundy <jeff@labundy.com> + */ + +#include <linux/bits.h> +#include <linux/delay.h> +#include <linux/device.h> +#include <linux/err.h> +#include <linux/gpio/consumer.h> +#include <linux/i2c.h> +#include <linux/input.h> +#include <linux/interrupt.h> +#include <linux/kernel.h> +#include <linux/ktime.h> +#include <linux/module.h> +#include <linux/of_device.h> +#include <linux/property.h> +#include <linux/slab.h> +#include <asm/unaligned.h> + +#define IQS7222_PROD_NUM 0x00 +#define IQS7222_PROD_NUM_A 840 +#define IQS7222_PROD_NUM_B 698 +#define IQS7222_PROD_NUM_C 863 + +#define IQS7222_SYS_STATUS 0x10 +#define IQS7222_SYS_STATUS_RESET BIT(3) +#define IQS7222_SYS_STATUS_ATI_ERROR BIT(1) +#define IQS7222_SYS_STATUS_ATI_ACTIVE BIT(0) + +#define IQS7222_CHAN_SETUP_0_REF_MODE_MASK GENMASK(15, 14) +#define IQS7222_CHAN_SETUP_0_REF_MODE_FOLLOW BIT(15) +#define IQS7222_CHAN_SETUP_0_REF_MODE_REF BIT(14) +#define IQS7222_CHAN_SETUP_0_CHAN_EN BIT(8) + +#define IQS7222_SLDR_SETUP_0_CHAN_CNT_MASK GENMASK(2, 0) +#define IQS7222_SLDR_SETUP_2_RES_MASK GENMASK(15, 8) +#define IQS7222_SLDR_SETUP_2_RES_SHIFT 8 +#define IQS7222_SLDR_SETUP_2_TOP_SPEED_MASK GENMASK(7, 0) + +#define IQS7222_GPIO_SETUP_0_GPIO_EN BIT(0) + +#define IQS7222_SYS_SETUP 0xD0 +#define IQS7222_SYS_SETUP_INTF_MODE_MASK GENMASK(7, 6) +#define IQS7222_SYS_SETUP_INTF_MODE_TOUCH BIT(7) +#define IQS7222_SYS_SETUP_INTF_MODE_EVENT BIT(6) +#define IQS7222_SYS_SETUP_PWR_MODE_MASK GENMASK(5, 4) +#define IQS7222_SYS_SETUP_PWR_MODE_AUTO IQS7222_SYS_SETUP_PWR_MODE_MASK +#define IQS7222_SYS_SETUP_REDO_ATI BIT(2) +#define IQS7222_SYS_SETUP_ACK_RESET BIT(0) + +#define IQS7222_EVENT_MASK_ATI BIT(12) +#define IQS7222_EVENT_MASK_SLDR BIT(10) +#define IQS7222_EVENT_MASK_TOUCH BIT(1) +#define IQS7222_EVENT_MASK_PROX BIT(0) + +#define IQS7222_COMMS_HOLD BIT(0) +#define IQS7222_COMMS_ERROR 0xEEEE +#define IQS7222_COMMS_RETRY_MS 50 +#define IQS7222_COMMS_TIMEOUT_MS 100 +#define IQS7222_RESET_TIMEOUT_MS 250 +#define IQS7222_ATI_TIMEOUT_MS 2000 + +#define IQS7222_MAX_COLS_STAT 8 +#define IQS7222_MAX_COLS_CYCLE 3 +#define IQS7222_MAX_COLS_GLBL 3 +#define IQS7222_MAX_COLS_BTN 3 +#define IQS7222_MAX_COLS_CHAN 6 +#define IQS7222_MAX_COLS_FILT 2 +#define IQS7222_MAX_COLS_SLDR 11 +#define IQS7222_MAX_COLS_GPIO 3 +#define IQS7222_MAX_COLS_SYS 13 + +#define IQS7222_MAX_CHAN 20 +#define IQS7222_MAX_SLDR 2 + +#define IQS7222_NUM_RETRIES 5 +#define IQS7222_REG_OFFSET 0x100 + +enum iqs7222_reg_key_id { + IQS7222_REG_KEY_NONE, + IQS7222_REG_KEY_PROX, + IQS7222_REG_KEY_TOUCH, + IQS7222_REG_KEY_DEBOUNCE, + IQS7222_REG_KEY_TAP, + IQS7222_REG_KEY_AXIAL, + IQS7222_REG_KEY_WHEEL, + IQS7222_REG_KEY_NO_WHEEL, + IQS7222_REG_KEY_RESERVED +}; + +enum iqs7222_reg_grp_id { + IQS7222_REG_GRP_STAT, + IQS7222_REG_GRP_FILT, + IQS7222_REG_GRP_CYCLE, + IQS7222_REG_GRP_GLBL, + IQS7222_REG_GRP_BTN, + IQS7222_REG_GRP_CHAN, + IQS7222_REG_GRP_SLDR, + IQS7222_REG_GRP_GPIO, + IQS7222_REG_GRP_SYS, + IQS7222_NUM_REG_GRPS +}; + +static const char * const iqs7222_reg_grp_names[] = { + [IQS7222_REG_GRP_CYCLE] = "cycle", + [IQS7222_REG_GRP_CHAN] = "channel", + [IQS7222_REG_GRP_SLDR] = "slider", + [IQS7222_REG_GRP_GPIO] = "gpio", +}; + +static const unsigned int iqs7222_max_cols[] = { + [IQS7222_REG_GRP_STAT] = IQS7222_MAX_COLS_STAT, + [IQS7222_REG_GRP_CYCLE] = IQS7222_MAX_COLS_CYCLE, + [IQS7222_REG_GRP_GLBL] = IQS7222_MAX_COLS_GLBL, + [IQS7222_REG_GRP_BTN] = IQS7222_MAX_COLS_BTN, + [IQS7222_REG_GRP_CHAN] = IQS7222_MAX_COLS_CHAN, + [IQS7222_REG_GRP_FILT] = IQS7222_MAX_COLS_FILT, + [IQS7222_REG_GRP_SLDR] = IQS7222_MAX_COLS_SLDR, + [IQS7222_REG_GRP_GPIO] = IQS7222_MAX_COLS_GPIO, + [IQS7222_REG_GRP_SYS] = IQS7222_MAX_COLS_SYS, +}; + +static const unsigned int iqs7222_gpio_links[] = { 2, 5, 6, }; + +struct iqs7222_event_desc { + const char *name; + u16 mask; + u16 val; + u16 enable; + enum iqs7222_reg_key_id reg_key; +}; + +static const struct iqs7222_event_desc iqs7222_kp_events[] = { + { + .name = "event-prox", + .enable = IQS7222_EVENT_MASK_PROX, + .reg_key = IQS7222_REG_KEY_PROX, + }, + { + .name = "event-touch", + .enable = IQS7222_EVENT_MASK_TOUCH, + .reg_key = IQS7222_REG_KEY_TOUCH, + }, +}; + +static const struct iqs7222_event_desc iqs7222_sl_events[] = { + { .name = "event-press", }, + { + .name = "event-tap", + .mask = BIT(0), + .val = BIT(0), + .enable = BIT(0), + .reg_key = IQS7222_REG_KEY_TAP, + }, + { + .name = "event-swipe-pos", + .mask = BIT(5) | BIT(1), + .val = BIT(1), + .enable = BIT(1), + .reg_key = IQS7222_REG_KEY_AXIAL, + }, + { + .name = "event-swipe-neg", + .mask = BIT(5) | BIT(1), + .val = BIT(5) | BIT(1), + .enable = BIT(1), + .reg_key = IQS7222_REG_KEY_AXIAL, + }, + { + .name = "event-flick-pos", + .mask = BIT(5) | BIT(2), + .val = BIT(2), + .enable = BIT(2), + .reg_key = IQS7222_REG_KEY_AXIAL, + }, + { + .name = "event-flick-neg", + .mask = BIT(5) | BIT(2), + .val = BIT(5) | BIT(2), + .enable = BIT(2), + .reg_key = IQS7222_REG_KEY_AXIAL, + }, +}; + +struct iqs7222_reg_grp_desc { + u16 base; + int num_row; + int num_col; +}; + +struct iqs7222_dev_desc { + u16 prod_num; + u16 fw_major; + u16 fw_minor; + u16 sldr_res; + u16 touch_link; + u16 wheel_enable; + int allow_offset; + int event_offset; + int comms_offset; + struct iqs7222_reg_grp_desc reg_grps[IQS7222_NUM_REG_GRPS]; +}; + +static const struct iqs7222_dev_desc iqs7222_devs[] = { + { + .prod_num = IQS7222_PROD_NUM_A, + .fw_major = 1, + .fw_minor = 12, + .sldr_res = U8_MAX * 16, + .touch_link = 1768, + .allow_offset = 9, + .event_offset = 10, + .comms_offset = 12, + .reg_grps = { + [IQS7222_REG_GRP_STAT] = { + .base = IQS7222_SYS_STATUS, + .num_row = 1, + .num_col = 8, + }, + [IQS7222_REG_GRP_CYCLE] = { + .base = 0x8000, + .num_row = 7, + .num_col = 3, + }, + [IQS7222_REG_GRP_GLBL] = { + .base = 0x8700, + .num_row = 1, + .num_col = 3, + }, + [IQS7222_REG_GRP_BTN] = { + .base = 0x9000, + .num_row = 12, + .num_col = 3, + }, + [IQS7222_REG_GRP_CHAN] = { + .base = 0xA000, + .num_row = 12, + .num_col = 6, + }, + [IQS7222_REG_GRP_FILT] = { + .base = 0xAC00, + .num_row = 1, + .num_col = 2, + }, + [IQS7222_REG_GRP_SLDR] = { + .base = 0xB000, + .num_row = 2, + .num_col = 11, + }, + [IQS7222_REG_GRP_GPIO] = { + .base = 0xC000, + .num_row = 1, + .num_col = 3, + }, + [IQS7222_REG_GRP_SYS] = { + .base = IQS7222_SYS_SETUP, + .num_row = 1, + .num_col = 13, + }, + }, + }, + { + .prod_num = IQS7222_PROD_NUM_B, + .fw_major = 1, + .fw_minor = 43, + .event_offset = 10, + .comms_offset = 11, + .reg_grps = { + [IQS7222_REG_GRP_STAT] = { + .base = IQS7222_SYS_STATUS, + .num_row = 1, + .num_col = 6, + }, + [IQS7222_REG_GRP_CYCLE] = { + .base = 0x8000, + .num_row = 10, + .num_col = 2, + }, + [IQS7222_REG_GRP_GLBL] = { + .base = 0x8A00, + .num_row = 1, + .num_col = 3, + }, + [IQS7222_REG_GRP_BTN] = { + .base = 0x9000, + .num_row = 20, + .num_col = 2, + }, + [IQS7222_REG_GRP_CHAN] = { + .base = 0xB000, + .num_row = 20, + .num_col = 4, + }, + [IQS7222_REG_GRP_FILT] = { + .base = 0xC400, + .num_row = 1, + .num_col = 2, + }, + [IQS7222_REG_GRP_SYS] = { + .base = IQS7222_SYS_SETUP, + .num_row = 1, + .num_col = 13, + }, + }, + }, + { + .prod_num = IQS7222_PROD_NUM_B, + .fw_major = 1, + .fw_minor = 27, + .reg_grps = { + [IQS7222_REG_GRP_STAT] = { + .base = IQS7222_SYS_STATUS, + .num_row = 1, + .num_col = 6, + }, + [IQS7222_REG_GRP_CYCLE] = { + .base = 0x8000, + .num_row = 10, + .num_col = 2, + }, + [IQS7222_REG_GRP_GLBL] = { + .base = 0x8A00, + .num_row = 1, + .num_col = 3, + }, + [IQS7222_REG_GRP_BTN] = { + .base = 0x9000, + .num_row = 20, + .num_col = 2, + }, + [IQS7222_REG_GRP_CHAN] = { + .base = 0xB000, + .num_row = 20, + .num_col = 4, + }, + [IQS7222_REG_GRP_FILT] = { + .base = 0xC400, + .num_row = 1, + .num_col = 2, + }, + [IQS7222_REG_GRP_SYS] = { + .base = IQS7222_SYS_SETUP, + .num_row = 1, + .num_col = 10, + }, + }, + }, + { + .prod_num = IQS7222_PROD_NUM_C, + .fw_major = 2, + .fw_minor = 6, + .sldr_res = U16_MAX, + .touch_link = 1686, + .wheel_enable = BIT(3), + .event_offset = 9, + .comms_offset = 10, + .reg_grps = { + [IQS7222_REG_GRP_STAT] = { + .base = IQS7222_SYS_STATUS, + .num_row = 1, + .num_col = 6, + }, + [IQS7222_REG_GRP_CYCLE] = { + .base = 0x8000, + .num_row = 5, + .num_col = 3, + }, + [IQS7222_REG_GRP_GLBL] = { + .base = 0x8500, + .num_row = 1, + .num_col = 3, + }, + [IQS7222_REG_GRP_BTN] = { + .base = 0x9000, + .num_row = 10, + .num_col = 3, + }, + [IQS7222_REG_GRP_CHAN] = { + .base = 0xA000, + .num_row = 10, + .num_col = 6, + }, + [IQS7222_REG_GRP_FILT] = { + .base = 0xAA00, + .num_row = 1, + .num_col = 2, + }, + [IQS7222_REG_GRP_SLDR] = { + .base = 0xB000, + .num_row = 2, + .num_col = 10, + }, + [IQS7222_REG_GRP_GPIO] = { + .base = 0xC000, + .num_row = 3, + .num_col = 3, + }, + [IQS7222_REG_GRP_SYS] = { + .base = IQS7222_SYS_SETUP, + .num_row = 1, + .num_col = 12, + }, + }, + }, + { + .prod_num = IQS7222_PROD_NUM_C, + .fw_major = 1, + .fw_minor = 13, + .sldr_res = U16_MAX, + .touch_link = 1674, + .wheel_enable = BIT(3), + .event_offset = 9, + .comms_offset = 10, + .reg_grps = { + [IQS7222_REG_GRP_STAT] = { + .base = IQS7222_SYS_STATUS, + .num_row = 1, + .num_col = 6, + }, + [IQS7222_REG_GRP_CYCLE] = { + .base = 0x8000, + .num_row = 5, + .num_col = 3, + }, + [IQS7222_REG_GRP_GLBL] = { + .base = 0x8500, + .num_row = 1, + .num_col = 3, + }, + [IQS7222_REG_GRP_BTN] = { + .base = 0x9000, + .num_row = 10, + .num_col = 3, + }, + [IQS7222_REG_GRP_CHAN] = { + .base = 0xA000, + .num_row = 10, + .num_col = 6, + }, + [IQS7222_REG_GRP_FILT] = { + .base = 0xAA00, + .num_row = 1, + .num_col = 2, + }, + [IQS7222_REG_GRP_SLDR] = { + .base = 0xB000, + .num_row = 2, + .num_col = 10, + }, + [IQS7222_REG_GRP_GPIO] = { + .base = 0xC000, + .num_row = 1, + .num_col = 3, + }, + [IQS7222_REG_GRP_SYS] = { + .base = IQS7222_SYS_SETUP, + .num_row = 1, + .num_col = 11, + }, + }, + }, +}; + +struct iqs7222_prop_desc { + const char *name; + enum iqs7222_reg_grp_id reg_grp; + enum iqs7222_reg_key_id reg_key; + int reg_offset; + int reg_shift; + int reg_width; + int val_pitch; + int val_min; + int val_max; + bool invert; + const char *label; +}; + +static const struct iqs7222_prop_desc iqs7222_props[] = { + { + .name = "azoteq,conv-period", + .reg_grp = IQS7222_REG_GRP_CYCLE, + .reg_offset = 0, + .reg_shift = 8, + .reg_width = 8, + .label = "conversion period", + }, + { + .name = "azoteq,conv-frac", + .reg_grp = IQS7222_REG_GRP_CYCLE, + .reg_offset = 0, + .reg_shift = 0, + .reg_width = 8, + .label = "conversion frequency fractional divider", + }, + { + .name = "azoteq,rx-float-inactive", + .reg_grp = IQS7222_REG_GRP_CYCLE, + .reg_offset = 1, + .reg_shift = 6, + .reg_width = 1, + .invert = true, + }, + { + .name = "azoteq,dead-time-enable", + .reg_grp = IQS7222_REG_GRP_CYCLE, + .reg_offset = 1, + .reg_shift = 5, + .reg_width = 1, + }, + { + .name = "azoteq,tx-freq-fosc", + .reg_grp = IQS7222_REG_GRP_CYCLE, + .reg_offset = 1, + .reg_shift = 4, + .reg_width = 1, + }, + { + .name = "azoteq,vbias-enable", + .reg_grp = IQS7222_REG_GRP_CYCLE, + .reg_offset = 1, + .reg_shift = 3, + .reg_width = 1, + }, + { + .name = "azoteq,sense-mode", + .reg_grp = IQS7222_REG_GRP_CYCLE, + .reg_offset = 1, + .reg_shift = 0, + .reg_width = 3, + .val_max = 3, + .label = "sensing mode", + }, + { + .name = "azoteq,iref-enable", + .reg_grp = IQS7222_REG_GRP_CYCLE, + .reg_offset = 2, + .reg_shift = 10, + .reg_width = 1, + }, + { + .name = "azoteq,iref-level", + .reg_grp = IQS7222_REG_GRP_CYCLE, + .reg_offset = 2, + .reg_shift = 4, + .reg_width = 4, + .label = "current reference level", + }, + { + .name = "azoteq,iref-trim", + .reg_grp = IQS7222_REG_GRP_CYCLE, + .reg_offset = 2, + .reg_shift = 0, + .reg_width = 4, + .label = "current reference trim", + }, + { + .name = "azoteq,max-counts", + .reg_grp = IQS7222_REG_GRP_GLBL, + .reg_offset = 0, + .reg_shift = 13, + .reg_width = 2, + .label = "maximum counts", + }, + { + .name = "azoteq,auto-mode", + .reg_grp = IQS7222_REG_GRP_GLBL, + .reg_offset = 0, + .reg_shift = 2, + .reg_width = 2, + .label = "number of conversions", + }, + { + .name = "azoteq,ati-frac-div-fine", + .reg_grp = IQS7222_REG_GRP_GLBL, + .reg_offset = 1, + .reg_shift = 9, + .reg_width = 5, + .label = "ATI fine fractional divider", + }, + { + .name = "azoteq,ati-frac-div-coarse", + .reg_grp = IQS7222_REG_GRP_GLBL, + .reg_offset = 1, + .reg_shift = 0, + .reg_width = 5, + .label = "ATI coarse fractional divider", + }, + { + .name = "azoteq,ati-comp-select", + .reg_grp = IQS7222_REG_GRP_GLBL, + .reg_offset = 2, + .reg_shift = 0, + .reg_width = 10, + .label = "ATI compensation selection", + }, + { + .name = "azoteq,ati-band", + .reg_grp = IQS7222_REG_GRP_CHAN, + .reg_offset = 0, + .reg_shift = 12, + .reg_width = 2, + .label = "ATI band", + }, + { + .name = "azoteq,global-halt", + .reg_grp = IQS7222_REG_GRP_CHAN, + .reg_offset = 0, + .reg_shift = 11, + .reg_width = 1, + }, + { + .name = "azoteq,invert-enable", + .reg_grp = IQS7222_REG_GRP_CHAN, + .reg_offset = 0, + .reg_shift = 10, + .reg_width = 1, + }, + { + .name = "azoteq,dual-direction", + .reg_grp = IQS7222_REG_GRP_CHAN, + .reg_offset = 0, + .reg_shift = 9, + .reg_width = 1, + }, + { + .name = "azoteq,samp-cap-double", + .reg_grp = IQS7222_REG_GRP_CHAN, + .reg_offset = 0, + .reg_shift = 3, + .reg_width = 1, + }, + { + .name = "azoteq,vref-half", + .reg_grp = IQS7222_REG_GRP_CHAN, + .reg_offset = 0, + .reg_shift = 2, + .reg_width = 1, + }, + { + .name = "azoteq,proj-bias", + .reg_grp = IQS7222_REG_GRP_CHAN, + .reg_offset = 0, + .reg_shift = 0, + .reg_width = 2, + .label = "projected bias current", + }, + { + .name = "azoteq,ati-target", + .reg_grp = IQS7222_REG_GRP_CHAN, + .reg_offset = 1, + .reg_shift = 8, + .reg_width = 8, + .val_pitch = 8, + .label = "ATI target", + }, + { + .name = "azoteq,ati-base", + .reg_grp = IQS7222_REG_GRP_CHAN, + .reg_offset = 1, + .reg_shift = 3, + .reg_width = 5, + .val_pitch = 16, + .label = "ATI base", + }, + { + .name = "azoteq,ati-mode", + .reg_grp = IQS7222_REG_GRP_CHAN, + .reg_offset = 1, + .reg_shift = 0, + .reg_width = 3, + .val_max = 5, + .label = "ATI mode", + }, + { + .name = "azoteq,ati-frac-div-fine", + .reg_grp = IQS7222_REG_GRP_CHAN, + .reg_offset = 2, + .reg_shift = 9, + .reg_width = 5, + .label = "ATI fine fractional divider", + }, + { + .name = "azoteq,ati-frac-mult-coarse", + .reg_grp = IQS7222_REG_GRP_CHAN, + .reg_offset = 2, + .reg_shift = 5, + .reg_width = 4, + .label = "ATI coarse fractional multiplier", + }, + { + .name = "azoteq,ati-frac-div-coarse", + .reg_grp = IQS7222_REG_GRP_CHAN, + .reg_offset = 2, + .reg_shift = 0, + .reg_width = 5, + .label = "ATI coarse fractional divider", + }, + { + .name = "azoteq,ati-comp-div", + .reg_grp = IQS7222_REG_GRP_CHAN, + .reg_offset = 3, + .reg_shift = 11, + .reg_width = 5, + .label = "ATI compensation divider", + }, + { + .name = "azoteq,ati-comp-select", + .reg_grp = IQS7222_REG_GRP_CHAN, + .reg_offset = 3, + .reg_shift = 0, + .reg_width = 10, + .label = "ATI compensation selection", + }, + { + .name = "azoteq,debounce-exit", + .reg_grp = IQS7222_REG_GRP_BTN, + .reg_key = IQS7222_REG_KEY_DEBOUNCE, + .reg_offset = 0, + .reg_shift = 12, + .reg_width = 4, + .label = "debounce exit factor", + }, + { + .name = "azoteq,debounce-enter", + .reg_grp = IQS7222_REG_GRP_BTN, + .reg_key = IQS7222_REG_KEY_DEBOUNCE, + .reg_offset = 0, + .reg_shift = 8, + .reg_width = 4, + .label = "debounce entrance factor", + }, + { + .name = "azoteq,thresh", + .reg_grp = IQS7222_REG_GRP_BTN, + .reg_key = IQS7222_REG_KEY_PROX, + .reg_offset = 0, + .reg_shift = 0, + .reg_width = 8, + .val_max = 127, + .label = "threshold", + }, + { + .name = "azoteq,thresh", + .reg_grp = IQS7222_REG_GRP_BTN, + .reg_key = IQS7222_REG_KEY_TOUCH, + .reg_offset = 1, + .reg_shift = 0, + .reg_width = 8, + .label = "threshold", + }, + { + .name = "azoteq,hyst", + .reg_grp = IQS7222_REG_GRP_BTN, + .reg_key = IQS7222_REG_KEY_TOUCH, + .reg_offset = 1, + .reg_shift = 8, + .reg_width = 8, + .label = "hysteresis", + }, + { + .name = "azoteq,lta-beta-lp", + .reg_grp = IQS7222_REG_GRP_FILT, + .reg_offset = 0, + .reg_shift = 12, + .reg_width = 4, + .label = "low-power mode long-term average beta", + }, + { + .name = "azoteq,lta-beta-np", + .reg_grp = IQS7222_REG_GRP_FILT, + .reg_offset = 0, + .reg_shift = 8, + .reg_width = 4, + .label = "normal-power mode long-term average beta", + }, + { + .name = "azoteq,counts-beta-lp", + .reg_grp = IQS7222_REG_GRP_FILT, + .reg_offset = 0, + .reg_shift = 4, + .reg_width = 4, + .label = "low-power mode counts beta", + }, + { + .name = "azoteq,counts-beta-np", + .reg_grp = IQS7222_REG_GRP_FILT, + .reg_offset = 0, + .reg_shift = 0, + .reg_width = 4, + .label = "normal-power mode counts beta", + }, + { + .name = "azoteq,lta-fast-beta-lp", + .reg_grp = IQS7222_REG_GRP_FILT, + .reg_offset = 1, + .reg_shift = 4, + .reg_width = 4, + .label = "low-power mode long-term average fast beta", + }, + { + .name = "azoteq,lta-fast-beta-np", + .reg_grp = IQS7222_REG_GRP_FILT, + .reg_offset = 1, + .reg_shift = 0, + .reg_width = 4, + .label = "normal-power mode long-term average fast beta", + }, + { + .name = "azoteq,lower-cal", + .reg_grp = IQS7222_REG_GRP_SLDR, + .reg_offset = 0, + .reg_shift = 8, + .reg_width = 8, + .label = "lower calibration", + }, + { + .name = "azoteq,static-beta", + .reg_grp = IQS7222_REG_GRP_SLDR, + .reg_key = IQS7222_REG_KEY_NO_WHEEL, + .reg_offset = 0, + .reg_shift = 6, + .reg_width = 1, + }, + { + .name = "azoteq,bottom-beta", + .reg_grp = IQS7222_REG_GRP_SLDR, + .reg_key = IQS7222_REG_KEY_NO_WHEEL, + .reg_offset = 0, + .reg_shift = 3, + .reg_width = 3, + .label = "bottom beta", + }, + { + .name = "azoteq,static-beta", + .reg_grp = IQS7222_REG_GRP_SLDR, + .reg_key = IQS7222_REG_KEY_WHEEL, + .reg_offset = 0, + .reg_shift = 7, + .reg_width = 1, + }, + { + .name = "azoteq,bottom-beta", + .reg_grp = IQS7222_REG_GRP_SLDR, + .reg_key = IQS7222_REG_KEY_WHEEL, + .reg_offset = 0, + .reg_shift = 4, + .reg_width = 3, + .label = "bottom beta", + }, + { + .name = "azoteq,bottom-speed", + .reg_grp = IQS7222_REG_GRP_SLDR, + .reg_offset = 1, + .reg_shift = 8, + .reg_width = 8, + .label = "bottom speed", + }, + { + .name = "azoteq,upper-cal", + .reg_grp = IQS7222_REG_GRP_SLDR, + .reg_offset = 1, + .reg_shift = 0, + .reg_width = 8, + .label = "upper calibration", + }, + { + .name = "azoteq,gesture-max-ms", + .reg_grp = IQS7222_REG_GRP_SLDR, + .reg_key = IQS7222_REG_KEY_TAP, + .reg_offset = 9, + .reg_shift = 8, + .reg_width = 8, + .val_pitch = 4, + .label = "maximum gesture time", + }, + { + .name = "azoteq,gesture-min-ms", + .reg_grp = IQS7222_REG_GRP_SLDR, + .reg_key = IQS7222_REG_KEY_TAP, + .reg_offset = 9, + .reg_shift = 3, + .reg_width = 5, + .val_pitch = 4, + .label = "minimum gesture time", + }, + { + .name = "azoteq,gesture-dist", + .reg_grp = IQS7222_REG_GRP_SLDR, + .reg_key = IQS7222_REG_KEY_AXIAL, + .reg_offset = 10, + .reg_shift = 8, + .reg_width = 8, + .val_pitch = 16, + .label = "gesture distance", + }, + { + .name = "azoteq,gesture-max-ms", + .reg_grp = IQS7222_REG_GRP_SLDR, + .reg_key = IQS7222_REG_KEY_AXIAL, + .reg_offset = 10, + .reg_shift = 0, + .reg_width = 8, + .val_pitch = 4, + .label = "maximum gesture time", + }, + { + .name = "drive-open-drain", + .reg_grp = IQS7222_REG_GRP_GPIO, + .reg_offset = 0, + .reg_shift = 1, + .reg_width = 1, + }, + { + .name = "azoteq,timeout-ati-ms", + .reg_grp = IQS7222_REG_GRP_SYS, + .reg_offset = 1, + .reg_shift = 0, + .reg_width = 16, + .val_pitch = 500, + .label = "ATI error timeout", + }, + { + .name = "azoteq,rate-ati-ms", + .reg_grp = IQS7222_REG_GRP_SYS, + .reg_offset = 2, + .reg_shift = 0, + .reg_width = 16, + .label = "ATI report rate", + }, + { + .name = "azoteq,timeout-np-ms", + .reg_grp = IQS7222_REG_GRP_SYS, + .reg_offset = 3, + .reg_shift = 0, + .reg_width = 16, + .label = "normal-power mode timeout", + }, + { + .name = "azoteq,rate-np-ms", + .reg_grp = IQS7222_REG_GRP_SYS, + .reg_offset = 4, + .reg_shift = 0, + .reg_width = 16, + .val_max = 3000, + .label = "normal-power mode report rate", + }, + { + .name = "azoteq,timeout-lp-ms", + .reg_grp = IQS7222_REG_GRP_SYS, + .reg_offset = 5, + .reg_shift = 0, + .reg_width = 16, + .label = "low-power mode timeout", + }, + { + .name = "azoteq,rate-lp-ms", + .reg_grp = IQS7222_REG_GRP_SYS, + .reg_offset = 6, + .reg_shift = 0, + .reg_width = 16, + .val_max = 3000, + .label = "low-power mode report rate", + }, + { + .name = "azoteq,timeout-ulp-ms", + .reg_grp = IQS7222_REG_GRP_SYS, + .reg_offset = 7, + .reg_shift = 0, + .reg_width = 16, + .label = "ultra-low-power mode timeout", + }, + { + .name = "azoteq,rate-ulp-ms", + .reg_grp = IQS7222_REG_GRP_SYS, + .reg_offset = 8, + .reg_shift = 0, + .reg_width = 16, + .val_max = 3000, + .label = "ultra-low-power mode report rate", + }, +}; + +struct iqs7222_private { + const struct iqs7222_dev_desc *dev_desc; + struct gpio_desc *reset_gpio; + struct gpio_desc *irq_gpio; + struct i2c_client *client; + struct input_dev *keypad; + unsigned int kp_type[IQS7222_MAX_CHAN][ARRAY_SIZE(iqs7222_kp_events)]; + unsigned int kp_code[IQS7222_MAX_CHAN][ARRAY_SIZE(iqs7222_kp_events)]; + unsigned int sl_code[IQS7222_MAX_SLDR][ARRAY_SIZE(iqs7222_sl_events)]; + unsigned int sl_axis[IQS7222_MAX_SLDR]; + u16 cycle_setup[IQS7222_MAX_CHAN / 2][IQS7222_MAX_COLS_CYCLE]; + u16 glbl_setup[IQS7222_MAX_COLS_GLBL]; + u16 btn_setup[IQS7222_MAX_CHAN][IQS7222_MAX_COLS_BTN]; + u16 chan_setup[IQS7222_MAX_CHAN][IQS7222_MAX_COLS_CHAN]; + u16 filt_setup[IQS7222_MAX_COLS_FILT]; + u16 sldr_setup[IQS7222_MAX_SLDR][IQS7222_MAX_COLS_SLDR]; + u16 gpio_setup[ARRAY_SIZE(iqs7222_gpio_links)][IQS7222_MAX_COLS_GPIO]; + u16 sys_setup[IQS7222_MAX_COLS_SYS]; +}; + +static u16 *iqs7222_setup(struct iqs7222_private *iqs7222, + enum iqs7222_reg_grp_id reg_grp, int row) +{ + switch (reg_grp) { + case IQS7222_REG_GRP_CYCLE: + return iqs7222->cycle_setup[row]; + + case IQS7222_REG_GRP_GLBL: + return iqs7222->glbl_setup; + + case IQS7222_REG_GRP_BTN: + return iqs7222->btn_setup[row]; + + case IQS7222_REG_GRP_CHAN: + return iqs7222->chan_setup[row]; + + case IQS7222_REG_GRP_FILT: + return iqs7222->filt_setup; + + case IQS7222_REG_GRP_SLDR: + return iqs7222->sldr_setup[row]; + + case IQS7222_REG_GRP_GPIO: + return iqs7222->gpio_setup[row]; + + case IQS7222_REG_GRP_SYS: + return iqs7222->sys_setup; + + default: + return NULL; + } +} + +static int iqs7222_irq_poll(struct iqs7222_private *iqs7222, u16 timeout_ms) +{ + ktime_t irq_timeout = ktime_add_ms(ktime_get(), timeout_ms); + int ret; + + do { + usleep_range(1000, 1100); + + ret = gpiod_get_value_cansleep(iqs7222->irq_gpio); + if (ret < 0) + return ret; + else if (ret > 0) + return 0; + } while (ktime_compare(ktime_get(), irq_timeout) < 0); + + return -EBUSY; +} + +static int iqs7222_hard_reset(struct iqs7222_private *iqs7222) +{ + struct i2c_client *client = iqs7222->client; + int error; + + if (!iqs7222->reset_gpio) + return 0; + + gpiod_set_value_cansleep(iqs7222->reset_gpio, 1); + usleep_range(1000, 1100); + + gpiod_set_value_cansleep(iqs7222->reset_gpio, 0); + + error = iqs7222_irq_poll(iqs7222, IQS7222_RESET_TIMEOUT_MS); + if (error) + dev_err(&client->dev, "Failed to reset device: %d\n", error); + + return error; +} + +static int iqs7222_force_comms(struct iqs7222_private *iqs7222) +{ + u8 msg_buf[] = { 0xFF, }; + int ret; + + /* + * The device cannot communicate until it asserts its interrupt (RDY) + * pin. Attempts to do so while RDY is deasserted return an ACK; how- + * ever all write data is ignored, and all read data returns 0xEE. + * + * Unsolicited communication must be preceded by a special force com- + * munication command, after which the device eventually asserts its + * RDY pin and agrees to communicate. + * + * Regardless of whether communication is forced or the result of an + * interrupt, the device automatically deasserts its RDY pin once it + * detects an I2C stop condition, or a timeout expires. + */ + ret = gpiod_get_value_cansleep(iqs7222->irq_gpio); + if (ret < 0) + return ret; + else if (ret > 0) + return 0; + + ret = i2c_master_send(iqs7222->client, msg_buf, sizeof(msg_buf)); + if (ret < (int)sizeof(msg_buf)) { + if (ret >= 0) + ret = -EIO; + + /* + * The datasheet states that the host must wait to retry any + * failed attempt to communicate over I2C. + */ + msleep(IQS7222_COMMS_RETRY_MS); + return ret; + } + + return iqs7222_irq_poll(iqs7222, IQS7222_COMMS_TIMEOUT_MS); +} + +static int iqs7222_read_burst(struct iqs7222_private *iqs7222, + u16 reg, void *val, u16 num_val) +{ + u8 reg_buf[sizeof(__be16)]; + int ret, i; + struct i2c_client *client = iqs7222->client; + struct i2c_msg msg[] = { + { + .addr = client->addr, + .flags = 0, + .len = reg > U8_MAX ? sizeof(reg) : sizeof(u8), + .buf = reg_buf, + }, + { + .addr = client->addr, + .flags = I2C_M_RD, + .len = num_val * sizeof(__le16), + .buf = (u8 *)val, + }, + }; + + if (reg > U8_MAX) + put_unaligned_be16(reg, reg_buf); + else + *reg_buf = (u8)reg; + + /* + * The following loop protects against an edge case in which the RDY + * pin is automatically deasserted just as the read is initiated. In + * that case, the read must be retried using forced communication. + */ + for (i = 0; i < IQS7222_NUM_RETRIES; i++) { + ret = iqs7222_force_comms(iqs7222); + if (ret < 0) + continue; + + ret = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg)); + if (ret < (int)ARRAY_SIZE(msg)) { + if (ret >= 0) + ret = -EIO; + + msleep(IQS7222_COMMS_RETRY_MS); + continue; + } + + if (get_unaligned_le16(msg[1].buf) == IQS7222_COMMS_ERROR) { + ret = -ENODATA; + continue; + } + + ret = 0; + break; + } + + /* + * The following delay ensures the device has deasserted the RDY pin + * following the I2C stop condition. + */ + usleep_range(50, 100); + + if (ret < 0) + dev_err(&client->dev, + "Failed to read from address 0x%04X: %d\n", reg, ret); + + return ret; +} + +static int iqs7222_read_word(struct iqs7222_private *iqs7222, u16 reg, u16 *val) +{ + __le16 val_buf; + int error; + + error = iqs7222_read_burst(iqs7222, reg, &val_buf, 1); + if (error) + return error; + + *val = le16_to_cpu(val_buf); + + return 0; +} + +static int iqs7222_write_burst(struct iqs7222_private *iqs7222, + u16 reg, const void *val, u16 num_val) +{ + int reg_len = reg > U8_MAX ? sizeof(reg) : sizeof(u8); + int val_len = num_val * sizeof(__le16); + int msg_len = reg_len + val_len; + int ret, i; + struct i2c_client *client = iqs7222->client; + u8 *msg_buf; + + msg_buf = kzalloc(msg_len, GFP_KERNEL); + if (!msg_buf) + return -ENOMEM; + + if (reg > U8_MAX) + put_unaligned_be16(reg, msg_buf); + else + *msg_buf = (u8)reg; + + memcpy(msg_buf + reg_len, val, val_len); + + /* + * The following loop protects against an edge case in which the RDY + * pin is automatically asserted just before the force communication + * command is sent. + * + * In that case, the subsequent I2C stop condition tricks the device + * into preemptively deasserting the RDY pin and the command must be + * sent again. + */ + for (i = 0; i < IQS7222_NUM_RETRIES; i++) { + ret = iqs7222_force_comms(iqs7222); + if (ret < 0) + continue; + + ret = i2c_master_send(client, msg_buf, msg_len); + if (ret < msg_len) { + if (ret >= 0) + ret = -EIO; + + msleep(IQS7222_COMMS_RETRY_MS); + continue; + } + + ret = 0; + break; + } + + kfree(msg_buf); + + usleep_range(50, 100); + + if (ret < 0) + dev_err(&client->dev, + "Failed to write to address 0x%04X: %d\n", reg, ret); + + return ret; +} + +static int iqs7222_write_word(struct iqs7222_private *iqs7222, u16 reg, u16 val) +{ + __le16 val_buf = cpu_to_le16(val); + + return iqs7222_write_burst(iqs7222, reg, &val_buf, 1); +} + +static int iqs7222_ati_trigger(struct iqs7222_private *iqs7222) +{ + struct i2c_client *client = iqs7222->client; + ktime_t ati_timeout; + u16 sys_status = 0; + u16 sys_setup; + int error, i; + + /* + * The reserved fields of the system setup register may have changed + * as a result of other registers having been written. As such, read + * the register's latest value to avoid unexpected behavior when the + * register is written in the loop that follows. + */ + error = iqs7222_read_word(iqs7222, IQS7222_SYS_SETUP, &sys_setup); + if (error) + return error; + + sys_setup &= ~IQS7222_SYS_SETUP_INTF_MODE_MASK; + sys_setup &= ~IQS7222_SYS_SETUP_PWR_MODE_MASK; + + for (i = 0; i < IQS7222_NUM_RETRIES; i++) { + /* + * Trigger ATI from streaming and normal-power modes so that + * the RDY pin continues to be asserted during ATI. + */ + error = iqs7222_write_word(iqs7222, IQS7222_SYS_SETUP, + sys_setup | + IQS7222_SYS_SETUP_REDO_ATI); + if (error) + return error; + + ati_timeout = ktime_add_ms(ktime_get(), IQS7222_ATI_TIMEOUT_MS); + + do { + error = iqs7222_irq_poll(iqs7222, + IQS7222_COMMS_TIMEOUT_MS); + if (error) + continue; + + error = iqs7222_read_word(iqs7222, IQS7222_SYS_STATUS, + &sys_status); + if (error) + return error; + + if (sys_status & IQS7222_SYS_STATUS_RESET) + return 0; + + if (sys_status & IQS7222_SYS_STATUS_ATI_ERROR) + break; + + if (sys_status & IQS7222_SYS_STATUS_ATI_ACTIVE) + continue; + + /* + * Use stream-in-touch mode if either slider reports + * absolute position. + */ + sys_setup |= test_bit(EV_ABS, iqs7222->keypad->evbit) + ? IQS7222_SYS_SETUP_INTF_MODE_TOUCH + : IQS7222_SYS_SETUP_INTF_MODE_EVENT; + sys_setup |= IQS7222_SYS_SETUP_PWR_MODE_AUTO; + + return iqs7222_write_word(iqs7222, IQS7222_SYS_SETUP, + sys_setup); + } while (ktime_compare(ktime_get(), ati_timeout) < 0); + + dev_err(&client->dev, + "ATI attempt %d of %d failed with status 0x%02X, %s\n", + i + 1, IQS7222_NUM_RETRIES, (u8)sys_status, + i + 1 < IQS7222_NUM_RETRIES ? "retrying" : "stopping"); + } + + return -ETIMEDOUT; +} + +static int iqs7222_dev_init(struct iqs7222_private *iqs7222, int dir) +{ + const struct iqs7222_dev_desc *dev_desc = iqs7222->dev_desc; + int comms_offset = dev_desc->comms_offset; + int error, i, j, k; + + /* + * Acknowledge reset before writing any registers in case the device + * suffers a spurious reset during initialization. Because this step + * may change the reserved fields of the second filter beta register, + * its cache must be updated. + * + * Writing the second filter beta register, in turn, may clobber the + * system status register. As such, the filter beta register pair is + * written first to protect against this hazard. + */ + if (dir == WRITE) { + u16 reg = dev_desc->reg_grps[IQS7222_REG_GRP_FILT].base + 1; + u16 filt_setup; + + error = iqs7222_write_word(iqs7222, IQS7222_SYS_SETUP, + iqs7222->sys_setup[0] | + IQS7222_SYS_SETUP_ACK_RESET); + if (error) + return error; + + error = iqs7222_read_word(iqs7222, reg, &filt_setup); + if (error) + return error; + + iqs7222->filt_setup[1] &= GENMASK(7, 0); + iqs7222->filt_setup[1] |= (filt_setup & ~GENMASK(7, 0)); + } + + /* + * Take advantage of the stop-bit disable function, if available, to + * save the trouble of having to reopen a communication window after + * each burst read or write. + */ + if (comms_offset) { + u16 comms_setup; + + error = iqs7222_read_word(iqs7222, + IQS7222_SYS_SETUP + comms_offset, + &comms_setup); + if (error) + return error; + + error = iqs7222_write_word(iqs7222, + IQS7222_SYS_SETUP + comms_offset, + comms_setup | IQS7222_COMMS_HOLD); + if (error) + return error; + } + + for (i = 0; i < IQS7222_NUM_REG_GRPS; i++) { + int num_row = dev_desc->reg_grps[i].num_row; + int num_col = dev_desc->reg_grps[i].num_col; + u16 reg = dev_desc->reg_grps[i].base; + __le16 *val_buf; + u16 *val; + + if (!num_col) + continue; + + val = iqs7222_setup(iqs7222, i, 0); + if (!val) + continue; + + val_buf = kcalloc(num_col, sizeof(__le16), GFP_KERNEL); + if (!val_buf) + return -ENOMEM; + + for (j = 0; j < num_row; j++) { + switch (dir) { + case READ: + error = iqs7222_read_burst(iqs7222, reg, + val_buf, num_col); + for (k = 0; k < num_col; k++) + val[k] = le16_to_cpu(val_buf[k]); + break; + + case WRITE: + for (k = 0; k < num_col; k++) + val_buf[k] = cpu_to_le16(val[k]); + error = iqs7222_write_burst(iqs7222, reg, + val_buf, num_col); + break; + + default: + error = -EINVAL; + } + + if (error) + break; + + reg += IQS7222_REG_OFFSET; + val += iqs7222_max_cols[i]; + } + + kfree(val_buf); + + if (error) + return error; + } + + if (comms_offset) { + u16 comms_setup; + + error = iqs7222_read_word(iqs7222, + IQS7222_SYS_SETUP + comms_offset, + &comms_setup); + if (error) + return error; + + error = iqs7222_write_word(iqs7222, + IQS7222_SYS_SETUP + comms_offset, + comms_setup & ~IQS7222_COMMS_HOLD); + if (error) + return error; + } + + if (dir == READ) + return 0; + + return iqs7222_ati_trigger(iqs7222); +} + +static int iqs7222_dev_info(struct iqs7222_private *iqs7222) +{ + struct i2c_client *client = iqs7222->client; + bool prod_num_valid = false; + __le16 dev_id[3]; + int error, i; + + error = iqs7222_read_burst(iqs7222, IQS7222_PROD_NUM, dev_id, + ARRAY_SIZE(dev_id)); + if (error) + return error; + + for (i = 0; i < ARRAY_SIZE(iqs7222_devs); i++) { + if (le16_to_cpu(dev_id[0]) != iqs7222_devs[i].prod_num) + continue; + + prod_num_valid = true; + + if (le16_to_cpu(dev_id[1]) < iqs7222_devs[i].fw_major) + continue; + + if (le16_to_cpu(dev_id[2]) < iqs7222_devs[i].fw_minor) + continue; + + iqs7222->dev_desc = &iqs7222_devs[i]; + return 0; + } + + if (prod_num_valid) + dev_err(&client->dev, "Unsupported firmware revision: %u.%u\n", + le16_to_cpu(dev_id[1]), le16_to_cpu(dev_id[2])); + else + dev_err(&client->dev, "Unrecognized product number: %u\n", + le16_to_cpu(dev_id[0])); + + return -EINVAL; +} + +static int iqs7222_gpio_select(struct iqs7222_private *iqs7222, + struct fwnode_handle *child_node, + int child_enable, u16 child_link) +{ + const struct iqs7222_dev_desc *dev_desc = iqs7222->dev_desc; + struct i2c_client *client = iqs7222->client; + int num_gpio = dev_desc->reg_grps[IQS7222_REG_GRP_GPIO].num_row; + int error, count, i; + unsigned int gpio_sel[ARRAY_SIZE(iqs7222_gpio_links)]; + + if (!num_gpio) + return 0; + + if (!fwnode_property_present(child_node, "azoteq,gpio-select")) + return 0; + + count = fwnode_property_count_u32(child_node, "azoteq,gpio-select"); + if (count > num_gpio) { + dev_err(&client->dev, "Invalid number of %s GPIOs\n", + fwnode_get_name(child_node)); + return -EINVAL; + } else if (count < 0) { + dev_err(&client->dev, "Failed to count %s GPIOs: %d\n", + fwnode_get_name(child_node), count); + return count; + } + + error = fwnode_property_read_u32_array(child_node, + "azoteq,gpio-select", + gpio_sel, count); + if (error) { + dev_err(&client->dev, "Failed to read %s GPIOs: %d\n", + fwnode_get_name(child_node), error); + return error; + } + + for (i = 0; i < count; i++) { + u16 *gpio_setup; + + if (gpio_sel[i] >= num_gpio) { + dev_err(&client->dev, "Invalid %s GPIO: %u\n", + fwnode_get_name(child_node), gpio_sel[i]); + return -EINVAL; + } + + gpio_setup = iqs7222->gpio_setup[gpio_sel[i]]; + + if (gpio_setup[2] && child_link != gpio_setup[2]) { + dev_err(&client->dev, + "Conflicting GPIO %u event types\n", + gpio_sel[i]); + return -EINVAL; + } + + gpio_setup[0] |= IQS7222_GPIO_SETUP_0_GPIO_EN; + gpio_setup[1] |= child_enable; + gpio_setup[2] = child_link; + } + + return 0; +} + +static int iqs7222_parse_props(struct iqs7222_private *iqs7222, + struct fwnode_handle **child_node, + int child_index, + enum iqs7222_reg_grp_id reg_grp, + enum iqs7222_reg_key_id reg_key) +{ + u16 *setup = iqs7222_setup(iqs7222, reg_grp, child_index); + struct i2c_client *client = iqs7222->client; + struct fwnode_handle *reg_grp_node; + char reg_grp_name[16]; + int i; + + switch (reg_grp) { + case IQS7222_REG_GRP_CYCLE: + case IQS7222_REG_GRP_CHAN: + case IQS7222_REG_GRP_SLDR: + case IQS7222_REG_GRP_GPIO: + case IQS7222_REG_GRP_BTN: + /* + * These groups derive a child node and return it to the caller + * for additional group-specific processing. In some cases, the + * child node may have already been derived. + */ + reg_grp_node = *child_node; + if (reg_grp_node) + break; + + snprintf(reg_grp_name, sizeof(reg_grp_name), "%s-%d", + iqs7222_reg_grp_names[reg_grp], child_index); + + reg_grp_node = device_get_named_child_node(&client->dev, + reg_grp_name); + if (!reg_grp_node) + return 0; + + *child_node = reg_grp_node; + break; + + case IQS7222_REG_GRP_GLBL: + case IQS7222_REG_GRP_FILT: + case IQS7222_REG_GRP_SYS: + /* + * These groups are not organized beneath a child node, nor are + * they subject to any additional processing by the caller. + */ + reg_grp_node = dev_fwnode(&client->dev); + break; + + default: + return -EINVAL; + } + + for (i = 0; i < ARRAY_SIZE(iqs7222_props); i++) { + const char *name = iqs7222_props[i].name; + int reg_offset = iqs7222_props[i].reg_offset; + int reg_shift = iqs7222_props[i].reg_shift; + int reg_width = iqs7222_props[i].reg_width; + int val_pitch = iqs7222_props[i].val_pitch ? : 1; + int val_min = iqs7222_props[i].val_min; + int val_max = iqs7222_props[i].val_max; + bool invert = iqs7222_props[i].invert; + const char *label = iqs7222_props[i].label ? : name; + unsigned int val; + int error; + + if (iqs7222_props[i].reg_grp != reg_grp || + iqs7222_props[i].reg_key != reg_key) + continue; + + /* + * Boolean register fields are one bit wide; they are forcibly + * reset to provide a means to undo changes by a bootloader if + * necessary. + * + * Scalar fields, on the other hand, are left untouched unless + * their corresponding properties are present. + */ + if (reg_width == 1) { + if (invert) + setup[reg_offset] |= BIT(reg_shift); + else + setup[reg_offset] &= ~BIT(reg_shift); + } + + if (!fwnode_property_present(reg_grp_node, name)) + continue; + + if (reg_width == 1) { + if (invert) + setup[reg_offset] &= ~BIT(reg_shift); + else + setup[reg_offset] |= BIT(reg_shift); + + continue; + } + + error = fwnode_property_read_u32(reg_grp_node, name, &val); + if (error) { + dev_err(&client->dev, "Failed to read %s %s: %d\n", + fwnode_get_name(reg_grp_node), label, error); + return error; + } + + if (!val_max) + val_max = GENMASK(reg_width - 1, 0) * val_pitch; + + if (val < val_min || val > val_max) { + dev_err(&client->dev, "Invalid %s %s: %u\n", + fwnode_get_name(reg_grp_node), label, val); + return -EINVAL; + } + + setup[reg_offset] &= ~GENMASK(reg_shift + reg_width - 1, + reg_shift); + setup[reg_offset] |= (val / val_pitch << reg_shift); + } + + return 0; +} + +static int iqs7222_parse_cycle(struct iqs7222_private *iqs7222, int cycle_index) +{ + u16 *cycle_setup = iqs7222->cycle_setup[cycle_index]; + struct i2c_client *client = iqs7222->client; + struct fwnode_handle *cycle_node = NULL; + unsigned int pins[9]; + int error, count, i; + + /* + * Each channel shares a cycle with one other channel; the mapping of + * channels to cycles is fixed. Properties defined for a cycle impact + * both channels tied to the cycle. + */ + error = iqs7222_parse_props(iqs7222, &cycle_node, cycle_index, + IQS7222_REG_GRP_CYCLE, + IQS7222_REG_KEY_NONE); + if (error) + return error; + + if (!cycle_node) + return 0; + + /* + * Unlike channels which are restricted to a select range of CRx pins + * based on channel number, any cycle can claim any of the device's 9 + * CTx pins (CTx0-8). + */ + if (!fwnode_property_present(cycle_node, "azoteq,tx-enable")) + return 0; + + count = fwnode_property_count_u32(cycle_node, "azoteq,tx-enable"); + if (count < 0) { + dev_err(&client->dev, "Failed to count %s CTx pins: %d\n", + fwnode_get_name(cycle_node), count); + return count; + } else if (count > ARRAY_SIZE(pins)) { + dev_err(&client->dev, "Invalid number of %s CTx pins\n", + fwnode_get_name(cycle_node)); + return -EINVAL; + } + + error = fwnode_property_read_u32_array(cycle_node, "azoteq,tx-enable", + pins, count); + if (error) { + dev_err(&client->dev, "Failed to read %s CTx pins: %d\n", + fwnode_get_name(cycle_node), error); + return error; + } + + cycle_setup[1] &= ~GENMASK(7 + ARRAY_SIZE(pins) - 1, 7); + + for (i = 0; i < count; i++) { + if (pins[i] > 8) { + dev_err(&client->dev, "Invalid %s CTx pin: %u\n", + fwnode_get_name(cycle_node), pins[i]); + return -EINVAL; + } + + cycle_setup[1] |= BIT(pins[i] + 7); + } + + return 0; +} + +static int iqs7222_parse_chan(struct iqs7222_private *iqs7222, int chan_index) +{ + const struct iqs7222_dev_desc *dev_desc = iqs7222->dev_desc; + struct i2c_client *client = iqs7222->client; + struct fwnode_handle *chan_node = NULL; + int num_chan = dev_desc->reg_grps[IQS7222_REG_GRP_CHAN].num_row; + int ext_chan = rounddown(num_chan, 10); + int error, i; + u16 *chan_setup = iqs7222->chan_setup[chan_index]; + u16 *sys_setup = iqs7222->sys_setup; + unsigned int val; + + error = iqs7222_parse_props(iqs7222, &chan_node, chan_index, + IQS7222_REG_GRP_CHAN, + IQS7222_REG_KEY_NONE); + if (error) + return error; + + if (!chan_node) + return 0; + + if (dev_desc->allow_offset && + fwnode_property_present(chan_node, "azoteq,ulp-allow")) + sys_setup[dev_desc->allow_offset] &= ~BIT(chan_index); + + chan_setup[0] |= IQS7222_CHAN_SETUP_0_CHAN_EN; + + /* + * The reference channel function allows for differential measurements + * and is only available in the case of IQS7222A or IQS7222C. + */ + if (dev_desc->reg_grps[IQS7222_REG_GRP_CHAN].num_col > 4 && + fwnode_property_present(chan_node, "azoteq,ref-select")) { + u16 *ref_setup; + + error = fwnode_property_read_u32(chan_node, "azoteq,ref-select", + &val); + if (error) { + dev_err(&client->dev, + "Failed to read %s reference channel: %d\n", + fwnode_get_name(chan_node), error); + return error; + } + + if (val >= ext_chan) { + dev_err(&client->dev, + "Invalid %s reference channel: %u\n", + fwnode_get_name(chan_node), val); + return -EINVAL; + } + + ref_setup = iqs7222->chan_setup[val]; + + /* + * Configure the current channel as a follower of the selected + * reference channel. + */ + chan_setup[0] |= IQS7222_CHAN_SETUP_0_REF_MODE_FOLLOW; + chan_setup[4] = val * 42 + 1048; + + if (!fwnode_property_read_u32(chan_node, "azoteq,ref-weight", + &val)) { + if (val > U16_MAX) { + dev_err(&client->dev, + "Invalid %s reference weight: %u\n", + fwnode_get_name(chan_node), val); + return -EINVAL; + } + + chan_setup[5] = val; + } + + /* + * Configure the selected channel as a reference channel which + * serves the current channel. + */ + ref_setup[0] |= IQS7222_CHAN_SETUP_0_REF_MODE_REF; + ref_setup[5] |= BIT(chan_index); + + ref_setup[4] = dev_desc->touch_link; + if (fwnode_property_present(chan_node, "azoteq,use-prox")) + ref_setup[4] -= 2; + } + + if (fwnode_property_present(chan_node, "azoteq,rx-enable")) { + /* + * Each channel can claim up to 4 CRx pins. The first half of + * the channels can use CRx0-3, while the second half can use + * CRx4-7. + */ + unsigned int pins[4]; + int count; + + count = fwnode_property_count_u32(chan_node, + "azoteq,rx-enable"); + if (count < 0) { + dev_err(&client->dev, + "Failed to count %s CRx pins: %d\n", + fwnode_get_name(chan_node), count); + return count; + } else if (count > ARRAY_SIZE(pins)) { + dev_err(&client->dev, + "Invalid number of %s CRx pins\n", + fwnode_get_name(chan_node)); + return -EINVAL; + } + + error = fwnode_property_read_u32_array(chan_node, + "azoteq,rx-enable", + pins, count); + if (error) { + dev_err(&client->dev, + "Failed to read %s CRx pins: %d\n", + fwnode_get_name(chan_node), error); + return error; + } + + chan_setup[0] &= ~GENMASK(4 + ARRAY_SIZE(pins) - 1, 4); + + for (i = 0; i < count; i++) { + int min_crx = chan_index < ext_chan / 2 ? 0 : 4; + + if (pins[i] < min_crx || pins[i] > min_crx + 3) { + dev_err(&client->dev, + "Invalid %s CRx pin: %u\n", + fwnode_get_name(chan_node), pins[i]); + return -EINVAL; + } + + chan_setup[0] |= BIT(pins[i] + 4 - min_crx); + } + } + + for (i = 0; i < ARRAY_SIZE(iqs7222_kp_events); i++) { + const char *event_name = iqs7222_kp_events[i].name; + u16 event_enable = iqs7222_kp_events[i].enable; + struct fwnode_handle *event_node; + + event_node = fwnode_get_named_child_node(chan_node, event_name); + if (!event_node) + continue; + + error = iqs7222_parse_props(iqs7222, &event_node, chan_index, + IQS7222_REG_GRP_BTN, + iqs7222_kp_events[i].reg_key); + if (error) + return error; + + error = iqs7222_gpio_select(iqs7222, event_node, + BIT(chan_index), + dev_desc->touch_link - (i ? 0 : 2)); + if (error) + return error; + + if (!fwnode_property_read_u32(event_node, + "azoteq,timeout-press-ms", + &val)) { + /* + * The IQS7222B employs a global pair of press timeout + * registers as opposed to channel-specific registers. + */ + u16 *setup = dev_desc->reg_grps + [IQS7222_REG_GRP_BTN].num_col > 2 ? + &iqs7222->btn_setup[chan_index][2] : + &sys_setup[9]; + + if (val > U8_MAX * 500) { + dev_err(&client->dev, + "Invalid %s press timeout: %u\n", + fwnode_get_name(chan_node), val); + return -EINVAL; + } + + *setup &= ~(U8_MAX << i * 8); + *setup |= (val / 500 << i * 8); + } + + error = fwnode_property_read_u32(event_node, "linux,code", + &val); + if (error) { + dev_err(&client->dev, "Failed to read %s code: %d\n", + fwnode_get_name(chan_node), error); + return error; + } + + iqs7222->kp_code[chan_index][i] = val; + iqs7222->kp_type[chan_index][i] = EV_KEY; + + if (fwnode_property_present(event_node, "linux,input-type")) { + error = fwnode_property_read_u32(event_node, + "linux,input-type", + &val); + if (error) { + dev_err(&client->dev, + "Failed to read %s input type: %d\n", + fwnode_get_name(chan_node), error); + return error; + } + + if (val != EV_KEY && val != EV_SW) { + dev_err(&client->dev, + "Invalid %s input type: %u\n", + fwnode_get_name(chan_node), val); + return -EINVAL; + } + + iqs7222->kp_type[chan_index][i] = val; + } + + /* + * Reference channels can opt out of event reporting by using + * KEY_RESERVED in place of a true key or switch code. + */ + if (iqs7222->kp_type[chan_index][i] == EV_KEY && + iqs7222->kp_code[chan_index][i] == KEY_RESERVED) + continue; + + input_set_capability(iqs7222->keypad, + iqs7222->kp_type[chan_index][i], + iqs7222->kp_code[chan_index][i]); + + if (!dev_desc->event_offset) + continue; + + sys_setup[dev_desc->event_offset] |= event_enable; + } + + /* + * The following call handles a special pair of properties that apply + * to a channel node, but reside within the button (event) group. + */ + return iqs7222_parse_props(iqs7222, &chan_node, chan_index, + IQS7222_REG_GRP_BTN, + IQS7222_REG_KEY_DEBOUNCE); +} + +static int iqs7222_parse_sldr(struct iqs7222_private *iqs7222, int sldr_index) +{ + const struct iqs7222_dev_desc *dev_desc = iqs7222->dev_desc; + struct i2c_client *client = iqs7222->client; + struct fwnode_handle *sldr_node = NULL; + int num_chan = dev_desc->reg_grps[IQS7222_REG_GRP_CHAN].num_row; + int ext_chan = rounddown(num_chan, 10); + int count, error, reg_offset, i; + u16 *event_mask = &iqs7222->sys_setup[dev_desc->event_offset]; + u16 *sldr_setup = iqs7222->sldr_setup[sldr_index]; + unsigned int chan_sel[4], val; + + error = iqs7222_parse_props(iqs7222, &sldr_node, sldr_index, + IQS7222_REG_GRP_SLDR, + IQS7222_REG_KEY_NONE); + if (error) + return error; + + if (!sldr_node) + return 0; + + /* + * Each slider can be spread across 3 to 4 channels. It is possible to + * select only 2 channels, but doing so prevents the slider from using + * the specified resolution. + */ + count = fwnode_property_count_u32(sldr_node, "azoteq,channel-select"); + if (count < 0) { + dev_err(&client->dev, "Failed to count %s channels: %d\n", + fwnode_get_name(sldr_node), count); + return count; + } else if (count < 3 || count > ARRAY_SIZE(chan_sel)) { + dev_err(&client->dev, "Invalid number of %s channels\n", + fwnode_get_name(sldr_node)); + return -EINVAL; + } + + error = fwnode_property_read_u32_array(sldr_node, + "azoteq,channel-select", + chan_sel, count); + if (error) { + dev_err(&client->dev, "Failed to read %s channels: %d\n", + fwnode_get_name(sldr_node), error); + return error; + } + + /* + * Resolution and top speed, if small enough, are packed into a single + * register. Otherwise, each occupies its own register and the rest of + * the slider-related register addresses are offset by one. + */ + reg_offset = dev_desc->sldr_res < U16_MAX ? 0 : 1; + + sldr_setup[0] |= count; + sldr_setup[3 + reg_offset] &= ~GENMASK(ext_chan - 1, 0); + + for (i = 0; i < ARRAY_SIZE(chan_sel); i++) { + sldr_setup[5 + reg_offset + i] = 0; + if (i >= count) + continue; + + if (chan_sel[i] >= ext_chan) { + dev_err(&client->dev, "Invalid %s channel: %u\n", + fwnode_get_name(sldr_node), chan_sel[i]); + return -EINVAL; + } + + /* + * The following fields indicate which channels participate in + * the slider, as well as each channel's relative placement. + */ + sldr_setup[3 + reg_offset] |= BIT(chan_sel[i]); + sldr_setup[5 + reg_offset + i] = chan_sel[i] * 42 + 1080; + } + + sldr_setup[4 + reg_offset] = dev_desc->touch_link; + if (fwnode_property_present(sldr_node, "azoteq,use-prox")) + sldr_setup[4 + reg_offset] -= 2; + + if (!fwnode_property_read_u32(sldr_node, "azoteq,slider-size", &val)) { + if (!val || val > dev_desc->sldr_res) { + dev_err(&client->dev, "Invalid %s size: %u\n", + fwnode_get_name(sldr_node), val); + return -EINVAL; + } + + if (reg_offset) { + sldr_setup[3] = val; + } else { + sldr_setup[2] &= ~IQS7222_SLDR_SETUP_2_RES_MASK; + sldr_setup[2] |= (val / 16 << + IQS7222_SLDR_SETUP_2_RES_SHIFT); + } + } + + if (!fwnode_property_read_u32(sldr_node, "azoteq,top-speed", &val)) { + if (val > (reg_offset ? U16_MAX : U8_MAX * 4)) { + dev_err(&client->dev, "Invalid %s top speed: %u\n", + fwnode_get_name(sldr_node), val); + return -EINVAL; + } + + if (reg_offset) { + sldr_setup[2] = val; + } else { + sldr_setup[2] &= ~IQS7222_SLDR_SETUP_2_TOP_SPEED_MASK; + sldr_setup[2] |= (val / 4); + } + } + + if (!fwnode_property_read_u32(sldr_node, "linux,axis", &val)) { + u16 sldr_max = sldr_setup[3] - 1; + + if (!reg_offset) { + sldr_max = sldr_setup[2]; + + sldr_max &= IQS7222_SLDR_SETUP_2_RES_MASK; + sldr_max >>= IQS7222_SLDR_SETUP_2_RES_SHIFT; + + sldr_max = sldr_max * 16 - 1; + } + + input_set_abs_params(iqs7222->keypad, val, 0, sldr_max, 0, 0); + iqs7222->sl_axis[sldr_index] = val; + } + + if (dev_desc->wheel_enable) { + sldr_setup[0] &= ~dev_desc->wheel_enable; + if (iqs7222->sl_axis[sldr_index] == ABS_WHEEL) + sldr_setup[0] |= dev_desc->wheel_enable; + } + + /* + * The absence of a register offset makes it safe to assume the device + * supports gestures, each of which is first disabled until explicitly + * enabled. + */ + if (!reg_offset) + for (i = 0; i < ARRAY_SIZE(iqs7222_sl_events); i++) + sldr_setup[9] &= ~iqs7222_sl_events[i].enable; + + for (i = 0; i < ARRAY_SIZE(iqs7222_sl_events); i++) { + const char *event_name = iqs7222_sl_events[i].name; + struct fwnode_handle *event_node; + + event_node = fwnode_get_named_child_node(sldr_node, event_name); + if (!event_node) + continue; + + error = iqs7222_parse_props(iqs7222, &event_node, sldr_index, + IQS7222_REG_GRP_SLDR, + reg_offset ? + IQS7222_REG_KEY_RESERVED : + iqs7222_sl_events[i].reg_key); + if (error) + return error; + + /* + * The press/release event does not expose a direct GPIO link, + * but one can be emulated by tying each of the participating + * channels to the same GPIO. + */ + error = iqs7222_gpio_select(iqs7222, event_node, + i ? iqs7222_sl_events[i].enable + : sldr_setup[3 + reg_offset], + i ? 1568 + sldr_index * 30 + : sldr_setup[4 + reg_offset]); + if (error) + return error; + + if (!reg_offset) + sldr_setup[9] |= iqs7222_sl_events[i].enable; + + error = fwnode_property_read_u32(event_node, "linux,code", + &val); + if (error) { + dev_err(&client->dev, "Failed to read %s code: %d\n", + fwnode_get_name(sldr_node), error); + return error; + } + + iqs7222->sl_code[sldr_index][i] = val; + input_set_capability(iqs7222->keypad, EV_KEY, val); + + if (!dev_desc->event_offset) + continue; + + /* + * The press/release event is determined based on whether the + * coordinate field reports 0xFFFF and solely relies on touch + * or proximity interrupts to be unmasked. + */ + if (i && !reg_offset) + *event_mask |= (IQS7222_EVENT_MASK_SLDR << sldr_index); + else if (sldr_setup[4 + reg_offset] == dev_desc->touch_link) + *event_mask |= IQS7222_EVENT_MASK_TOUCH; + else + *event_mask |= IQS7222_EVENT_MASK_PROX; + } + + /* + * The following call handles a special pair of properties that shift + * to make room for a wheel enable control in the case of IQS7222C. + */ + return iqs7222_parse_props(iqs7222, &sldr_node, sldr_index, + IQS7222_REG_GRP_SLDR, + dev_desc->wheel_enable ? + IQS7222_REG_KEY_WHEEL : + IQS7222_REG_KEY_NO_WHEEL); +} + +static int iqs7222_parse_all(struct iqs7222_private *iqs7222) +{ + const struct iqs7222_dev_desc *dev_desc = iqs7222->dev_desc; + const struct iqs7222_reg_grp_desc *reg_grps = dev_desc->reg_grps; + u16 *sys_setup = iqs7222->sys_setup; + int error, i; + + if (dev_desc->allow_offset) + sys_setup[dev_desc->allow_offset] = U16_MAX; + + if (dev_desc->event_offset) + sys_setup[dev_desc->event_offset] = IQS7222_EVENT_MASK_ATI; + + for (i = 0; i < reg_grps[IQS7222_REG_GRP_CYCLE].num_row; i++) { + error = iqs7222_parse_cycle(iqs7222, i); + if (error) + return error; + } + + error = iqs7222_parse_props(iqs7222, NULL, 0, IQS7222_REG_GRP_GLBL, + IQS7222_REG_KEY_NONE); + if (error) + return error; + + for (i = 0; i < reg_grps[IQS7222_REG_GRP_GPIO].num_row; i++) { + struct fwnode_handle *gpio_node = NULL; + u16 *gpio_setup = iqs7222->gpio_setup[i]; + int j; + + gpio_setup[0] &= ~IQS7222_GPIO_SETUP_0_GPIO_EN; + gpio_setup[1] = 0; + gpio_setup[2] = 0; + + error = iqs7222_parse_props(iqs7222, &gpio_node, i, + IQS7222_REG_GRP_GPIO, + IQS7222_REG_KEY_NONE); + if (error) + return error; + + if (reg_grps[IQS7222_REG_GRP_GPIO].num_row == 1) + continue; + + /* + * The IQS7222C exposes multiple GPIO and must be informed + * as to which GPIO this group represents. + */ + for (j = 0; j < ARRAY_SIZE(iqs7222_gpio_links); j++) + gpio_setup[0] &= ~BIT(iqs7222_gpio_links[j]); + + gpio_setup[0] |= BIT(iqs7222_gpio_links[i]); + } + + for (i = 0; i < reg_grps[IQS7222_REG_GRP_CHAN].num_row; i++) { + u16 *chan_setup = iqs7222->chan_setup[i]; + + chan_setup[0] &= ~IQS7222_CHAN_SETUP_0_REF_MODE_MASK; + chan_setup[0] &= ~IQS7222_CHAN_SETUP_0_CHAN_EN; + + chan_setup[5] = 0; + } + + for (i = 0; i < reg_grps[IQS7222_REG_GRP_CHAN].num_row; i++) { + error = iqs7222_parse_chan(iqs7222, i); + if (error) + return error; + } + + error = iqs7222_parse_props(iqs7222, NULL, 0, IQS7222_REG_GRP_FILT, + IQS7222_REG_KEY_NONE); + if (error) + return error; + + for (i = 0; i < reg_grps[IQS7222_REG_GRP_SLDR].num_row; i++) { + u16 *sldr_setup = iqs7222->sldr_setup[i]; + + sldr_setup[0] &= ~IQS7222_SLDR_SETUP_0_CHAN_CNT_MASK; + + error = iqs7222_parse_sldr(iqs7222, i); + if (error) + return error; + } + + return iqs7222_parse_props(iqs7222, NULL, 0, IQS7222_REG_GRP_SYS, + IQS7222_REG_KEY_NONE); +} + +static int iqs7222_report(struct iqs7222_private *iqs7222) +{ + const struct iqs7222_dev_desc *dev_desc = iqs7222->dev_desc; + struct i2c_client *client = iqs7222->client; + int num_chan = dev_desc->reg_grps[IQS7222_REG_GRP_CHAN].num_row; + int num_stat = dev_desc->reg_grps[IQS7222_REG_GRP_STAT].num_col; + int error, i, j; + __le16 status[IQS7222_MAX_COLS_STAT]; + + error = iqs7222_read_burst(iqs7222, IQS7222_SYS_STATUS, status, + num_stat); + if (error) + return error; + + if (le16_to_cpu(status[0]) & IQS7222_SYS_STATUS_RESET) { + dev_err(&client->dev, "Unexpected device reset\n"); + return iqs7222_dev_init(iqs7222, WRITE); + } + + if (le16_to_cpu(status[0]) & IQS7222_SYS_STATUS_ATI_ERROR) { + dev_err(&client->dev, "Unexpected ATI error\n"); + return iqs7222_ati_trigger(iqs7222); + } + + if (le16_to_cpu(status[0]) & IQS7222_SYS_STATUS_ATI_ACTIVE) + return 0; + + for (i = 0; i < num_chan; i++) { + u16 *chan_setup = iqs7222->chan_setup[i]; + + if (!(chan_setup[0] & IQS7222_CHAN_SETUP_0_CHAN_EN)) + continue; + + for (j = 0; j < ARRAY_SIZE(iqs7222_kp_events); j++) { + /* + * Proximity state begins at offset 2 and spills into + * offset 3 for devices with more than 16 channels. + * + * Touch state begins at the first offset immediately + * following proximity state. + */ + int k = 2 + j * (num_chan > 16 ? 2 : 1); + u16 state = le16_to_cpu(status[k + i / 16]); + + if (!iqs7222->kp_type[i][j]) + continue; + + input_event(iqs7222->keypad, + iqs7222->kp_type[i][j], + iqs7222->kp_code[i][j], + !!(state & BIT(i % 16))); + } + } + + for (i = 0; i < dev_desc->reg_grps[IQS7222_REG_GRP_SLDR].num_row; i++) { + u16 *sldr_setup = iqs7222->sldr_setup[i]; + u16 sldr_pos = le16_to_cpu(status[4 + i]); + u16 state = le16_to_cpu(status[6 + i]); + + if (!(sldr_setup[0] & IQS7222_SLDR_SETUP_0_CHAN_CNT_MASK)) + continue; + + if (sldr_pos < dev_desc->sldr_res) + input_report_abs(iqs7222->keypad, iqs7222->sl_axis[i], + sldr_pos); + + input_report_key(iqs7222->keypad, iqs7222->sl_code[i][0], + sldr_pos < dev_desc->sldr_res); + + /* + * A maximum resolution indicates the device does not support + * gestures, in which case the remaining fields are ignored. + */ + if (dev_desc->sldr_res == U16_MAX) + continue; + + if (!(le16_to_cpu(status[1]) & IQS7222_EVENT_MASK_SLDR << i)) + continue; + + /* + * Skip the press/release event, as it does not have separate + * status fields and is handled separately. + */ + for (j = 1; j < ARRAY_SIZE(iqs7222_sl_events); j++) { + u16 mask = iqs7222_sl_events[j].mask; + u16 val = iqs7222_sl_events[j].val; + + input_report_key(iqs7222->keypad, + iqs7222->sl_code[i][j], + (state & mask) == val); + } + + input_sync(iqs7222->keypad); + + for (j = 1; j < ARRAY_SIZE(iqs7222_sl_events); j++) + input_report_key(iqs7222->keypad, + iqs7222->sl_code[i][j], 0); + } + + input_sync(iqs7222->keypad); + + return 0; +} + +static irqreturn_t iqs7222_irq(int irq, void *context) +{ + struct iqs7222_private *iqs7222 = context; + + return iqs7222_report(iqs7222) ? IRQ_NONE : IRQ_HANDLED; +} + +static int iqs7222_probe(struct i2c_client *client) +{ + struct iqs7222_private *iqs7222; + unsigned long irq_flags; + int error, irq; + + iqs7222 = devm_kzalloc(&client->dev, sizeof(*iqs7222), GFP_KERNEL); + if (!iqs7222) + return -ENOMEM; + + i2c_set_clientdata(client, iqs7222); + iqs7222->client = client; + + iqs7222->keypad = devm_input_allocate_device(&client->dev); + if (!iqs7222->keypad) + return -ENOMEM; + + iqs7222->keypad->name = client->name; + iqs7222->keypad->id.bustype = BUS_I2C; + + /* + * The RDY pin behaves as an interrupt, but must also be polled ahead + * of unsolicited I2C communication. As such, it is first opened as a + * GPIO and then passed to gpiod_to_irq() to register the interrupt. + */ + iqs7222->irq_gpio = devm_gpiod_get(&client->dev, "irq", GPIOD_IN); + if (IS_ERR(iqs7222->irq_gpio)) { + error = PTR_ERR(iqs7222->irq_gpio); + dev_err(&client->dev, "Failed to request IRQ GPIO: %d\n", + error); + return error; + } + + iqs7222->reset_gpio = devm_gpiod_get_optional(&client->dev, "reset", + GPIOD_OUT_HIGH); + if (IS_ERR(iqs7222->reset_gpio)) { + error = PTR_ERR(iqs7222->reset_gpio); + dev_err(&client->dev, "Failed to request reset GPIO: %d\n", + error); + return error; + } + + error = iqs7222_hard_reset(iqs7222); + if (error) + return error; + + error = iqs7222_dev_info(iqs7222); + if (error) + return error; + + error = iqs7222_dev_init(iqs7222, READ); + if (error) + return error; + + error = iqs7222_parse_all(iqs7222); + if (error) + return error; + + error = iqs7222_dev_init(iqs7222, WRITE); + if (error) + return error; + + error = iqs7222_report(iqs7222); + if (error) + return error; + + error = input_register_device(iqs7222->keypad); + if (error) { + dev_err(&client->dev, "Failed to register device: %d\n", error); + return error; + } + + irq = gpiod_to_irq(iqs7222->irq_gpio); + if (irq < 0) + return irq; + + irq_flags = gpiod_is_active_low(iqs7222->irq_gpio) ? IRQF_TRIGGER_LOW + : IRQF_TRIGGER_HIGH; + irq_flags |= IRQF_ONESHOT; + + error = devm_request_threaded_irq(&client->dev, irq, NULL, iqs7222_irq, + irq_flags, client->name, iqs7222); + if (error) + dev_err(&client->dev, "Failed to request IRQ: %d\n", error); + + return error; +} + +static const struct of_device_id iqs7222_of_match[] = { + { .compatible = "azoteq,iqs7222a" }, + { .compatible = "azoteq,iqs7222b" }, + { .compatible = "azoteq,iqs7222c" }, + { } +}; +MODULE_DEVICE_TABLE(of, iqs7222_of_match); + +static struct i2c_driver iqs7222_i2c_driver = { + .driver = { + .name = "iqs7222", + .of_match_table = iqs7222_of_match, + }, + .probe_new = iqs7222_probe, +}; +module_i2c_driver(iqs7222_i2c_driver); + +MODULE_AUTHOR("Jeff LaBundy <jeff@labundy.com>"); +MODULE_DESCRIPTION("Azoteq IQS7222A/B/C Capacitive Touch Controller"); +MODULE_LICENSE("GPL"); diff --git a/drivers/input/misc/keyspan_remote.c b/drivers/input/misc/keyspan_remote.c index 4650f4a94989..bee4b1376491 100644 --- a/drivers/input/misc/keyspan_remote.c +++ b/drivers/input/misc/keyspan_remote.c @@ -485,7 +485,7 @@ static int keyspan_probe(struct usb_interface *interface, const struct usb_devic } if (udev->manufacturer) - strlcpy(remote->name, udev->manufacturer, sizeof(remote->name)); + strscpy(remote->name, udev->manufacturer, sizeof(remote->name)); if (udev->product) { if (udev->manufacturer) diff --git a/drivers/input/misc/palmas-pwrbutton.c b/drivers/input/misc/palmas-pwrbutton.c index f9b05cf09ff5..465e6693077a 100644 --- a/drivers/input/misc/palmas-pwrbutton.c +++ b/drivers/input/misc/palmas-pwrbutton.c @@ -1,20 +1,13 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Texas Instruments' Palmas Power Button Input Driver * * Copyright (C) 2012-2014 Texas Instruments Incorporated - http://www.ti.com/ * Girish S Ghongdemath * Nishanth Menon - * - * 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/bitfield.h> #include <linux/init.h> #include <linux/input.h> #include <linux/interrupt.h> @@ -115,8 +108,8 @@ static void palmas_pwron_params_ofinit(struct device *dev, struct device_node *np; u32 val; int i, error; - u8 lpk_times[] = { 6, 8, 10, 12 }; - int pwr_on_deb_ms[] = { 15, 100, 500, 1000 }; + static const u8 lpk_times[] = { 6, 8, 10, 12 }; + static const int pwr_on_deb_ms[] = { 15, 100, 500, 1000 }; memset(config, 0, sizeof(*config)); @@ -192,8 +185,8 @@ static int palmas_pwron_probe(struct platform_device *pdev) * Setup default hardware shutdown option (long key press) * and debounce. */ - val = config.long_press_time_val << __ffs(PALMAS_LPK_TIME_MASK); - val |= config.pwron_debounce_val << __ffs(PALMAS_PWRON_DEBOUNCE_MASK); + val = FIELD_PREP(PALMAS_LPK_TIME_MASK, config.long_press_time_val) | + FIELD_PREP(PALMAS_PWRON_DEBOUNCE_MASK, config.pwron_debounce_val); error = palmas_update_bits(palmas, PALMAS_PMU_CONTROL_BASE, PALMAS_LONG_PRESS_KEY, PALMAS_LPK_TIME_MASK | diff --git a/drivers/input/misc/pcf8574_keypad.c b/drivers/input/misc/pcf8574_keypad.c index abc423165522..cfd6640e4f82 100644 --- a/drivers/input/misc/pcf8574_keypad.c +++ b/drivers/input/misc/pcf8574_keypad.c @@ -157,7 +157,7 @@ static int pcf8574_kp_probe(struct i2c_client *client, const struct i2c_device_i return ret; } -static int pcf8574_kp_remove(struct i2c_client *client) +static void pcf8574_kp_remove(struct i2c_client *client) { struct kp_data *lp = i2c_get_clientdata(client); @@ -165,8 +165,6 @@ static int pcf8574_kp_remove(struct i2c_client *client) input_unregister_device(lp->idev); kfree(lp); - - return 0; } #ifdef CONFIG_PM diff --git a/drivers/input/misc/pm8941-pwrkey.c b/drivers/input/misc/pm8941-pwrkey.c index 89af52498c96..549df01b6ee3 100644 --- a/drivers/input/misc/pm8941-pwrkey.c +++ b/drivers/input/misc/pm8941-pwrkey.c @@ -9,9 +9,11 @@ #include <linux/input.h> #include <linux/interrupt.h> #include <linux/kernel.h> +#include <linux/ktime.h> #include <linux/log2.h> #include <linux/module.h> #include <linux/of.h> +#include <linux/of_address.h> #include <linux/of_device.h> #include <linux/platform_device.h> #include <linux/reboot.h> @@ -19,6 +21,16 @@ #define PON_REV2 0x01 +#define PON_SUBTYPE 0x05 + +#define PON_SUBTYPE_PRIMARY 0x01 +#define PON_SUBTYPE_SECONDARY 0x02 +#define PON_SUBTYPE_1REG 0x03 +#define PON_SUBTYPE_GEN2_PRIMARY 0x04 +#define PON_SUBTYPE_GEN2_SECONDARY 0x05 +#define PON_SUBTYPE_GEN3_PBS 0x08 +#define PON_SUBTYPE_GEN3_HLOS 0x09 + #define PON_RT_STS 0x10 #define PON_KPDPWR_N_SET BIT(0) #define PON_RESIN_N_SET BIT(1) @@ -45,6 +57,7 @@ struct pm8941_data { unsigned int status_bit; bool supports_ps_hold_poff_config; bool supports_debounce_config; + bool has_pon_pbs; const char *name; const char *phys; }; @@ -53,13 +66,18 @@ struct pm8941_pwrkey { struct device *dev; int irq; u32 baseaddr; + u32 pon_pbs_baseaddr; struct regmap *regmap; struct input_dev *input; unsigned int revision; + unsigned int subtype; struct notifier_block reboot_notifier; u32 code; + u32 sw_debounce_time_us; + ktime_t sw_debounce_end_time; + bool last_status; const struct pm8941_data *data; }; @@ -129,20 +147,76 @@ static irqreturn_t pm8941_pwrkey_irq(int irq, void *_data) { struct pm8941_pwrkey *pwrkey = _data; unsigned int sts; - int error; + int err; + + if (pwrkey->sw_debounce_time_us) { + if (ktime_before(ktime_get(), pwrkey->sw_debounce_end_time)) { + dev_dbg(pwrkey->dev, + "ignoring key event received before debounce end %llu us\n", + pwrkey->sw_debounce_end_time); + return IRQ_HANDLED; + } + } - error = regmap_read(pwrkey->regmap, - pwrkey->baseaddr + PON_RT_STS, &sts); - if (error) + err = regmap_read(pwrkey->regmap, pwrkey->baseaddr + PON_RT_STS, &sts); + if (err) return IRQ_HANDLED; - input_report_key(pwrkey->input, pwrkey->code, - sts & pwrkey->data->status_bit); + sts &= pwrkey->data->status_bit; + + if (pwrkey->sw_debounce_time_us && !sts) + pwrkey->sw_debounce_end_time = ktime_add_us(ktime_get(), + pwrkey->sw_debounce_time_us); + + /* + * Simulate a press event in case a release event occurred without a + * corresponding press event. + */ + if (!pwrkey->last_status && !sts) { + input_report_key(pwrkey->input, pwrkey->code, 1); + input_sync(pwrkey->input); + } + pwrkey->last_status = sts; + + input_report_key(pwrkey->input, pwrkey->code, sts); input_sync(pwrkey->input); return IRQ_HANDLED; } +static int pm8941_pwrkey_sw_debounce_init(struct pm8941_pwrkey *pwrkey) +{ + unsigned int val, addr, mask; + int error; + + if (pwrkey->data->has_pon_pbs && !pwrkey->pon_pbs_baseaddr) { + dev_err(pwrkey->dev, + "PON_PBS address missing, can't read HW debounce time\n"); + return 0; + } + + if (pwrkey->pon_pbs_baseaddr) + addr = pwrkey->pon_pbs_baseaddr + PON_DBC_CTL; + else + addr = pwrkey->baseaddr + PON_DBC_CTL; + error = regmap_read(pwrkey->regmap, addr, &val); + if (error) + return error; + + if (pwrkey->subtype >= PON_SUBTYPE_GEN2_PRIMARY) + mask = 0xf; + else + mask = 0x7; + + pwrkey->sw_debounce_time_us = + 2 * USEC_PER_SEC / (1 << (mask - (val & mask))); + + dev_dbg(pwrkey->dev, "SW debounce time = %u us\n", + pwrkey->sw_debounce_time_us); + + return 0; +} + static int __maybe_unused pm8941_pwrkey_suspend(struct device *dev) { struct pm8941_pwrkey *pwrkey = dev_get_drvdata(dev); @@ -171,6 +245,8 @@ static int pm8941_pwrkey_probe(struct platform_device *pdev) struct pm8941_pwrkey *pwrkey; bool pull_up; struct device *parent; + struct device_node *regmap_node; + const __be32 *addr; u32 req_delay; int error; @@ -192,8 +268,10 @@ static int pm8941_pwrkey_probe(struct platform_device *pdev) pwrkey->data = of_device_get_match_data(&pdev->dev); parent = pdev->dev.parent; + regmap_node = pdev->dev.of_node; pwrkey->regmap = dev_get_regmap(parent, NULL); if (!pwrkey->regmap) { + regmap_node = parent->of_node; /* * We failed to get regmap for parent. Let's see if we are * a child of pon node and read regmap and reg from its @@ -204,15 +282,21 @@ static int pm8941_pwrkey_probe(struct platform_device *pdev) dev_err(&pdev->dev, "failed to locate regmap\n"); return -ENODEV; } + } - error = of_property_read_u32(parent->of_node, - "reg", &pwrkey->baseaddr); - } else { - error = of_property_read_u32(pdev->dev.of_node, "reg", - &pwrkey->baseaddr); + addr = of_get_address(regmap_node, 0, NULL, NULL); + if (!addr) { + dev_err(&pdev->dev, "reg property missing\n"); + return -EINVAL; + } + pwrkey->baseaddr = be32_to_cpup(addr); + + if (pwrkey->data->has_pon_pbs) { + /* PON_PBS base address is optional */ + addr = of_get_address(regmap_node, 1, NULL, NULL); + if (addr) + pwrkey->pon_pbs_baseaddr = be32_to_cpup(addr); } - if (error) - return error; pwrkey->irq = platform_get_irq(pdev, 0); if (pwrkey->irq < 0) @@ -221,7 +305,14 @@ static int pm8941_pwrkey_probe(struct platform_device *pdev) error = regmap_read(pwrkey->regmap, pwrkey->baseaddr + PON_REV2, &pwrkey->revision); if (error) { - dev_err(&pdev->dev, "failed to set debounce: %d\n", error); + dev_err(&pdev->dev, "failed to read revision: %d\n", error); + return error; + } + + error = regmap_read(pwrkey->regmap, pwrkey->baseaddr + PON_SUBTYPE, + &pwrkey->subtype); + if (error) { + dev_err(&pdev->dev, "failed to read subtype: %d\n", error); return error; } @@ -259,6 +350,10 @@ static int pm8941_pwrkey_probe(struct platform_device *pdev) } } + error = pm8941_pwrkey_sw_debounce_init(pwrkey); + if (error) + return error; + if (pwrkey->data->pull_up_bit) { error = regmap_update_bits(pwrkey->regmap, pwrkey->baseaddr + PON_PULL_CTL, @@ -320,6 +415,7 @@ static const struct pm8941_data pwrkey_data = { .phys = "pm8941_pwrkey/input0", .supports_ps_hold_poff_config = true, .supports_debounce_config = true, + .has_pon_pbs = false, }; static const struct pm8941_data resin_data = { @@ -329,6 +425,7 @@ static const struct pm8941_data resin_data = { .phys = "pm8941_resin/input0", .supports_ps_hold_poff_config = true, .supports_debounce_config = true, + .has_pon_pbs = false, }; static const struct pm8941_data pon_gen3_pwrkey_data = { @@ -337,6 +434,7 @@ static const struct pm8941_data pon_gen3_pwrkey_data = { .phys = "pmic_pwrkey/input0", .supports_ps_hold_poff_config = false, .supports_debounce_config = false, + .has_pon_pbs = true, }; static const struct pm8941_data pon_gen3_resin_data = { @@ -345,6 +443,7 @@ static const struct pm8941_data pon_gen3_resin_data = { .phys = "pmic_resin/input0", .supports_ps_hold_poff_config = false, .supports_debounce_config = false, + .has_pon_pbs = true, }; static const struct of_device_id pm8941_pwr_key_id_table[] = { diff --git a/drivers/input/misc/powermate.c b/drivers/input/misc/powermate.c index c4e0e1886061..c1c733a9cb89 100644 --- a/drivers/input/misc/powermate.c +++ b/drivers/input/misc/powermate.c @@ -374,7 +374,7 @@ static int powermate_probe(struct usb_interface *intf, const struct usb_device_i /* get a handle to the interrupt data pipe */ pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress); - maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe)); + maxp = usb_maxpacket(udev, pipe); if (maxp < POWERMATE_PAYLOAD_SIZE_MIN || maxp > POWERMATE_PAYLOAD_SIZE_MAX) { printk(KERN_WARNING "powermate: Expected payload of %d--%d bytes, found %d bytes!\n", diff --git a/drivers/input/misc/rk805-pwrkey.c b/drivers/input/misc/rk805-pwrkey.c index 3fb64dbda1a2..76873aa005b4 100644 --- a/drivers/input/misc/rk805-pwrkey.c +++ b/drivers/input/misc/rk805-pwrkey.c @@ -98,6 +98,7 @@ static struct platform_driver rk805_pwrkey_driver = { }; module_platform_driver(rk805_pwrkey_driver); +MODULE_ALIAS("platform:rk805-pwrkey"); MODULE_AUTHOR("Joseph Chen <chenjh@rock-chips.com>"); MODULE_DESCRIPTION("RK805 PMIC Power Key driver"); MODULE_LICENSE("GPL"); diff --git a/drivers/input/misc/rt5120-pwrkey.c b/drivers/input/misc/rt5120-pwrkey.c new file mode 100644 index 000000000000..8a8c1aeeed05 --- /dev/null +++ b/drivers/input/misc/rt5120-pwrkey.c @@ -0,0 +1,120 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2022 Richtek Technology Corp. + * Author: ChiYuan Huang <cy_huang@richtek.com> + */ + +#include <linux/bits.h> +#include <linux/input.h> +#include <linux/interrupt.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/mod_devicetable.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> + +#define RT5120_REG_INTSTAT 0x1E +#define RT5120_PWRKEYSTAT_MASK BIT(7) + +struct rt5120_priv { + struct regmap *regmap; + struct input_dev *input; +}; + +static irqreturn_t rt5120_pwrkey_handler(int irq, void *devid) +{ + struct rt5120_priv *priv = devid; + unsigned int stat; + int error; + + error = regmap_read(priv->regmap, RT5120_REG_INTSTAT, &stat); + if (error) + return IRQ_NONE; + + input_report_key(priv->input, KEY_POWER, + !(stat & RT5120_PWRKEYSTAT_MASK)); + input_sync(priv->input); + + return IRQ_HANDLED; +} + +static int rt5120_pwrkey_probe(struct platform_device *pdev) +{ + struct rt5120_priv *priv; + struct device *dev = &pdev->dev; + int press_irq, release_irq; + int error; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->regmap = dev_get_regmap(dev->parent, NULL); + if (!priv->regmap) { + dev_err(dev, "Failed to init regmap\n"); + return -ENODEV; + } + + press_irq = platform_get_irq_byname(pdev, "pwrkey-press"); + if (press_irq < 0) + return press_irq; + + release_irq = platform_get_irq_byname(pdev, "pwrkey-release"); + if (release_irq < 0) + return release_irq; + + /* Make input device be device resource managed */ + priv->input = devm_input_allocate_device(dev); + if (!priv->input) + return -ENOMEM; + + priv->input->name = "rt5120_pwrkey"; + priv->input->phys = "rt5120_pwrkey/input0"; + priv->input->id.bustype = BUS_I2C; + input_set_capability(priv->input, EV_KEY, KEY_POWER); + + error = input_register_device(priv->input); + if (error) { + dev_err(dev, "Failed to register input device: %d\n", error); + return error; + } + + error = devm_request_threaded_irq(dev, press_irq, + NULL, rt5120_pwrkey_handler, + 0, "pwrkey-press", priv); + if (error) { + dev_err(dev, + "Failed to register pwrkey press irq: %d\n", error); + return error; + } + + error = devm_request_threaded_irq(dev, release_irq, + NULL, rt5120_pwrkey_handler, + 0, "pwrkey-release", priv); + if (error) { + dev_err(dev, + "Failed to register pwrkey release irq: %d\n", error); + return error; + } + + return 0; +} + +static const struct of_device_id r5120_pwrkey_match_table[] = { + { .compatible = "richtek,rt5120-pwrkey" }, + {} +}; +MODULE_DEVICE_TABLE(of, r5120_pwrkey_match_table); + +static struct platform_driver rt5120_pwrkey_driver = { + .driver = { + .name = "rt5120-pwrkey", + .of_match_table = r5120_pwrkey_match_table, + }, + .probe = rt5120_pwrkey_probe, +}; +module_platform_driver(rt5120_pwrkey_driver); + +MODULE_AUTHOR("ChiYuan Huang <cy_huang@richtek.com>"); +MODULE_DESCRIPTION("Richtek RT5120 power key driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/input/misc/soc_button_array.c b/drivers/input/misc/soc_button_array.c index cb6ec59a045d..480476121c01 100644 --- a/drivers/input/misc/soc_button_array.c +++ b/drivers/input/misc/soc_button_array.c @@ -85,13 +85,13 @@ static const struct dmi_system_id dmi_use_low_level_irq[] = { }, { /* - * Lenovo Yoga Tab2 1051L, something messes with the home-button + * Lenovo Yoga Tab2 1051F/1051L, something messes with the home-button * IRQ settings, leading to a non working home-button. */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), DMI_MATCH(DMI_PRODUCT_NAME, "60073"), - DMI_MATCH(DMI_PRODUCT_VERSION, "1051L"), + DMI_MATCH(DMI_PRODUCT_VERSION, "1051"), }, }, {} /* Terminating entry */ @@ -470,6 +470,27 @@ static const struct soc_device_data soc_device_INT33D3 = { }; /* + * Button info for Microsoft Surface 3 (non pro), this is indentical to + * the PNP0C40 info except that the home button is active-high. + * + * The Surface 3 Pro also has a MSHW0028 ACPI device, but that uses a custom + * version of the drivers/platform/x86/intel/hid.c 5 button array ACPI API + * instead. A check() callback is not necessary though as the Surface 3 Pro + * MSHW0028 ACPI device's resource table does not contain any GPIOs. + */ +static const struct soc_button_info soc_button_MSHW0028[] = { + { "power", 0, EV_KEY, KEY_POWER, false, true, true }, + { "home", 1, EV_KEY, KEY_LEFTMETA, false, true, false }, + { "volume_up", 2, EV_KEY, KEY_VOLUMEUP, true, false, true }, + { "volume_down", 3, EV_KEY, KEY_VOLUMEDOWN, true, false, true }, + { } +}; + +static const struct soc_device_data soc_device_MSHW0028 = { + .button_info = soc_button_MSHW0028, +}; + +/* * Special device check for Surface Book 2 and Surface Pro (2017). * Both, the Surface Pro 4 (surfacepro3_button.c) and the above mentioned * devices use MSHW0040 for power and volume buttons, however the way they @@ -535,7 +556,8 @@ static const struct acpi_device_id soc_button_acpi_match[] = { { "ID9001", (unsigned long)&soc_device_INT33D3 }, { "ACPI0011", 0 }, - /* Microsoft Surface Devices (5th and 6th generation) */ + /* Microsoft Surface Devices (3th, 5th and 6th generation) */ + { "MSHW0028", (unsigned long)&soc_device_MSHW0028 }, { "MSHW0040", (unsigned long)&soc_device_MSHW0040 }, { } diff --git a/drivers/input/misc/sparcspkr.c b/drivers/input/misc/sparcspkr.c index fe43e5557ed7..cdcb7737c46a 100644 --- a/drivers/input/misc/sparcspkr.c +++ b/drivers/input/misc/sparcspkr.c @@ -205,6 +205,7 @@ static int bbc_beep_probe(struct platform_device *op) info = &state->u.bbc; info->clock_freq = of_getintprop_default(dp, "clock-frequency", 0); + of_node_put(dp); if (!info->clock_freq) goto out_free; diff --git a/drivers/input/misc/tps65218-pwrbutton.c b/drivers/input/misc/tps65218-pwrbutton.c index f011447c44fb..fc450fce0932 100644 --- a/drivers/input/misc/tps65218-pwrbutton.c +++ b/drivers/input/misc/tps65218-pwrbutton.c @@ -1,18 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Texas Instruments' TPS65217 and TPS65218 Power Button Input Driver * * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/ * Author: Felipe Balbi <balbi@ti.com> * Author: Marcin Niestroj <m.niestroj@grinn-global.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> diff --git a/drivers/input/misc/twl4030-pwrbutton.c b/drivers/input/misc/twl4030-pwrbutton.c index b307cca17022..e3ee0638ffba 100644 --- a/drivers/input/misc/twl4030-pwrbutton.c +++ b/drivers/input/misc/twl4030-pwrbutton.c @@ -26,6 +26,7 @@ #include <linux/errno.h> #include <linux/input.h> #include <linux/interrupt.h> +#include <linux/of.h> #include <linux/platform_device.h> #include <linux/mfd/twl.h> diff --git a/drivers/input/misc/twl4030-vibra.c b/drivers/input/misc/twl4030-vibra.c index e0ff616fb857..5619996da86f 100644 --- a/drivers/input/misc/twl4030-vibra.c +++ b/drivers/input/misc/twl4030-vibra.c @@ -163,14 +163,10 @@ static int __maybe_unused twl4030_vibra_resume(struct device *dev) static SIMPLE_DEV_PM_OPS(twl4030_vibra_pm_ops, twl4030_vibra_suspend, twl4030_vibra_resume); -static bool twl4030_vibra_check_coexist(struct twl4030_vibra_data *pdata, - struct device_node *parent) +static bool twl4030_vibra_check_coexist(struct device_node *parent) { struct device_node *node; - if (pdata && pdata->coexist) - return true; - node = of_get_child_by_name(parent, "codec"); if (node) { of_node_put(node); @@ -182,13 +178,12 @@ static bool twl4030_vibra_check_coexist(struct twl4030_vibra_data *pdata, static int twl4030_vibra_probe(struct platform_device *pdev) { - struct twl4030_vibra_data *pdata = dev_get_platdata(&pdev->dev); struct device_node *twl4030_core_node = pdev->dev.parent->of_node; struct vibra_info *info; int ret; - if (!pdata && !twl4030_core_node) { - dev_dbg(&pdev->dev, "platform_data not available\n"); + if (!twl4030_core_node) { + dev_dbg(&pdev->dev, "twl4030 OF node is missing\n"); return -EINVAL; } @@ -197,7 +192,7 @@ static int twl4030_vibra_probe(struct platform_device *pdev) return -ENOMEM; info->dev = &pdev->dev; - info->coexist = twl4030_vibra_check_coexist(pdata, twl4030_core_node); + info->coexist = twl4030_vibra_check_coexist(twl4030_core_node); INIT_WORK(&info->play_work, vibra_play_work); info->input_dev = devm_input_allocate_device(&pdev->dev); diff --git a/drivers/input/misc/xen-kbdfront.c b/drivers/input/misc/xen-kbdfront.c index 3d17a0b3fe51..8d8ebdc2039b 100644 --- a/drivers/input/misc/xen-kbdfront.c +++ b/drivers/input/misc/xen-kbdfront.c @@ -481,7 +481,7 @@ static int xenkbd_connect_backend(struct xenbus_device *dev, error_evtchan: xenbus_free_evtchn(dev, evtchn); error_grant: - gnttab_end_foreign_access(info->gref, 0, 0UL); + gnttab_end_foreign_access(info->gref, NULL); info->gref = -1; return ret; } @@ -492,7 +492,7 @@ static void xenkbd_disconnect_backend(struct xenkbd_info *info) unbind_from_irqhandler(info->irq, info); info->irq = -1; if (info->gref >= 0) - gnttab_end_foreign_access(info->gref, 0, 0UL); + gnttab_end_foreign_access(info->gref, NULL); info->gref = -1; } diff --git a/drivers/input/misc/yealink.c b/drivers/input/misc/yealink.c index 8ab01c7601b1..69420781db30 100644 --- a/drivers/input/misc/yealink.c +++ b/drivers/input/misc/yealink.c @@ -905,7 +905,7 @@ static int usb_probe(struct usb_interface *intf, const struct usb_device_id *id) /* get a handle to the interrupt data pipe */ pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress); - ret = usb_maxpacket(udev, pipe, usb_pipeout(pipe)); + ret = usb_maxpacket(udev, pipe); if (ret != USB_PKT_LEN) dev_err(&intf->dev, "invalid payload size %d, expected %zd\n", ret, USB_PKT_LEN); |