From 80b4895aa4578e9372d76cd4063f82d0c3994d77 Mon Sep 17 00:00:00 2001 From: Jeff Brown Date: Mon, 18 Apr 2011 10:08:02 -0700 Subject: Input: estimate number of events per packet Calculate a default based on the number of ABS axes, REL axes, and MT slots for the device during input device registration. Signed-off-by: Jeff Brown Reviewed-by: Henrik Rydberg Signed-off-by: Dmitry Torokhov --- include/linux/input/mt.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux/input') diff --git a/include/linux/input/mt.h b/include/linux/input/mt.h index b3ac06a4435d..318bb82325a6 100644 --- a/include/linux/input/mt.h +++ b/include/linux/input/mt.h @@ -48,6 +48,12 @@ static inline void input_mt_slot(struct input_dev *dev, int slot) input_event(dev, EV_ABS, ABS_MT_SLOT, slot); } +static inline bool input_is_mt_axis(int axis) +{ + return axis == ABS_MT_SLOT || + (axis >= ABS_MT_FIRST && axis <= ABS_MT_LAST); +} + void input_mt_report_slot_state(struct input_dev *dev, unsigned int tool_type, bool active); -- cgit v1.2.3-71-gd317 From 3532cb0ca2774b05e3c660f536ba3d1b38061fc9 Mon Sep 17 00:00:00 2001 From: Michael Hennerich Date: Mon, 16 May 2011 23:17:34 -0700 Subject: Input: ad714x - allow platform code to specify irqflags Add option to specify irqflags in platfrom data. Also update copyright notice. Signed-off-by: Michael Hennerich Tested-by: Jean-Francois Dagenais Signed-off-by: Dmitry Torokhov --- drivers/input/misc/ad714x.c | 4 +++- include/linux/input/ad714x.h | 3 ++- 2 files changed, 5 insertions(+), 2 deletions(-) (limited to 'include/linux/input') diff --git a/drivers/input/misc/ad714x.c b/drivers/input/misc/ad714x.c index 0f2db45f730c..5f683ec2999e 100644 --- a/drivers/input/misc/ad714x.c +++ b/drivers/input/misc/ad714x.c @@ -1257,7 +1257,9 @@ struct ad714x_chip *ad714x_probe(struct device *dev, u16 bus_type, int irq, } error = request_threaded_irq(ad714x->irq, NULL, ad714x_interrupt_thread, - IRQF_TRIGGER_FALLING, "ad714x_captouch", ad714x); + plat_data->irqflags ? + plat_data->irqflags : IRQF_TRIGGER_FALLING, + "ad714x_captouch", ad714x); if (error) { dev_err(dev, "can't allocate irq %d\n", ad714x->irq); goto err_unreg_dev; diff --git a/include/linux/input/ad714x.h b/include/linux/input/ad714x.h index 0cbe5e81482e..d388d857bf14 100644 --- a/include/linux/input/ad714x.h +++ b/include/linux/input/ad714x.h @@ -6,7 +6,7 @@ * The platform_data for the device's "struct device" holds this * information. * - * Copyright 2009 Analog Devices Inc. + * Copyright 2009-2011 Analog Devices Inc. * * Licensed under the GPL-2 or later. */ @@ -58,6 +58,7 @@ struct ad714x_platform_data { struct ad714x_button_plat *button; unsigned short stage_cfg_reg[STAGE_NUM][STAGE_CFGREG_NUM]; unsigned short sys_cfg_reg[SYS_CFGREG_NUM]; + unsigned long irqflags; }; #endif -- cgit v1.2.3-71-gd317 From 9d2e173644bb5c42ff1b280fbdda3f195a7cf1f7 Mon Sep 17 00:00:00 2001 From: Michael Hennerich Date: Thu, 19 May 2011 00:59:32 -0700 Subject: Input: ADP5589 - new driver for I2C Keypad Decoder and I/O Expander From http://www.analog.com/ADP5589: The ADP5589 is an I/O port expander and keypad matrix decoder designed for QWERTY type phones that require a large keypad matrix and expanded I/O lines. Signed-off-by: Michael Hennerich Signed-off-by: Mike Frysinger Signed-off-by: Dmitry Torokhov --- drivers/input/keyboard/Kconfig | 10 + drivers/input/keyboard/Makefile | 1 + drivers/input/keyboard/adp5589-keys.c | 771 ++++++++++++++++++++++++++++++++++ include/linux/input/adp5589.h | 213 ++++++++++ 4 files changed, 995 insertions(+) create mode 100644 drivers/input/keyboard/adp5589-keys.c create mode 100644 include/linux/input/adp5589.h (limited to 'include/linux/input') diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig index dec090ac7d31..69badb4e06aa 100644 --- a/drivers/input/keyboard/Kconfig +++ b/drivers/input/keyboard/Kconfig @@ -32,6 +32,16 @@ config KEYBOARD_ADP5588 To compile this driver as a module, choose M here: the module will be called adp5588-keys. +config KEYBOARD_ADP5589 + tristate "ADP5589 I2C QWERTY Keypad and IO Expander" + depends on I2C + help + Say Y here if you want to use a ADP5589 attached to your + system I2C bus. + + To compile this driver as a module, choose M here: the + module will be called adp5589-keys. + config KEYBOARD_AMIGA tristate "Amiga keyboard" depends on AMIGA diff --git a/drivers/input/keyboard/Makefile b/drivers/input/keyboard/Makefile index b45361009f2e..c49cf8e04cd7 100644 --- a/drivers/input/keyboard/Makefile +++ b/drivers/input/keyboard/Makefile @@ -6,6 +6,7 @@ obj-$(CONFIG_KEYBOARD_ADP5520) += adp5520-keys.o obj-$(CONFIG_KEYBOARD_ADP5588) += adp5588-keys.o +obj-$(CONFIG_KEYBOARD_ADP5589) += adp5589-keys.o obj-$(CONFIG_KEYBOARD_AMIGA) += amikbd.o obj-$(CONFIG_KEYBOARD_ATARI) += atakbd.o obj-$(CONFIG_KEYBOARD_ATKBD) += atkbd.o diff --git a/drivers/input/keyboard/adp5589-keys.c b/drivers/input/keyboard/adp5589-keys.c new file mode 100644 index 000000000000..631598663aab --- /dev/null +++ b/drivers/input/keyboard/adp5589-keys.c @@ -0,0 +1,771 @@ +/* + * Description: keypad driver for ADP5589 + * I2C QWERTY Keypad and IO Expander + * Bugs: Enter bugs at http://blackfin.uclinux.org/ + * + * Copyright (C) 2010-2011 Analog Devices Inc. + * Licensed under the GPL-2. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +/* GENERAL_CFG Register */ +#define OSC_EN (1 << 7) +#define CORE_CLK(x) (((x) & 0x3) << 5) +#define LCK_TRK_LOGIC (1 << 4) +#define LCK_TRK_GPI (1 << 3) +#define INT_CFG (1 << 1) +#define RST_CFG (1 << 0) + +/* INT_EN Register */ +#define LOGIC2_IEN (1 << 5) +#define LOGIC1_IEN (1 << 4) +#define LOCK_IEN (1 << 3) +#define OVRFLOW_IEN (1 << 2) +#define GPI_IEN (1 << 1) +#define EVENT_IEN (1 << 0) + +/* Interrupt Status Register */ +#define LOGIC2_INT (1 << 5) +#define LOGIC1_INT (1 << 4) +#define LOCK_INT (1 << 3) +#define OVRFLOW_INT (1 << 2) +#define GPI_INT (1 << 1) +#define EVENT_INT (1 << 0) + +/* STATUS Register */ + +#define LOGIC2_STAT (1 << 7) +#define LOGIC1_STAT (1 << 6) +#define LOCK_STAT (1 << 5) +#define KEC 0xF + +/* PIN_CONFIG_D Register */ +#define C4_EXTEND_CFG (1 << 6) /* RESET2 */ +#define R4_EXTEND_CFG (1 << 5) /* RESET1 */ + +/* LOCK_CFG */ +#define LOCK_EN (1 << 0) + +#define PTIME_MASK 0x3 +#define LTIME_MASK 0x3 + +/* Key Event Register xy */ +#define KEY_EV_PRESSED (1 << 7) +#define KEY_EV_MASK (0x7F) + +#define KEYP_MAX_EVENT 16 + +#define MAXGPIO 19 +#define ADP_BANK(offs) ((offs) >> 3) +#define ADP_BIT(offs) (1u << ((offs) & 0x7)) + +struct adp5589_kpad { + struct i2c_client *client; + struct input_dev *input; + unsigned short keycode[ADP5589_KEYMAPSIZE]; + const struct adp5589_gpi_map *gpimap; + unsigned short gpimapsize; + unsigned extend_cfg; +#ifdef CONFIG_GPIOLIB + unsigned char gpiomap[MAXGPIO]; + bool export_gpio; + struct gpio_chip gc; + struct mutex gpio_lock; /* Protect cached dir, dat_out */ + u8 dat_out[3]; + u8 dir[3]; +#endif +}; + +static int adp5589_read(struct i2c_client *client, u8 reg) +{ + int ret = i2c_smbus_read_byte_data(client, reg); + + if (ret < 0) + dev_err(&client->dev, "Read Error\n"); + + return ret; +} + +static int adp5589_write(struct i2c_client *client, u8 reg, u8 val) +{ + return i2c_smbus_write_byte_data(client, reg, val); +} + +#ifdef CONFIG_GPIOLIB +static int adp5589_gpio_get_value(struct gpio_chip *chip, unsigned off) +{ + struct adp5589_kpad *kpad = container_of(chip, struct adp5589_kpad, gc); + unsigned int bank = ADP_BANK(kpad->gpiomap[off]); + unsigned int bit = ADP_BIT(kpad->gpiomap[off]); + + return !!(adp5589_read(kpad->client, ADP5589_GPI_STATUS_A + bank) & + bit); +} + +static void adp5589_gpio_set_value(struct gpio_chip *chip, + unsigned off, int val) +{ + struct adp5589_kpad *kpad = container_of(chip, struct adp5589_kpad, gc); + unsigned int bank = ADP_BANK(kpad->gpiomap[off]); + unsigned int bit = ADP_BIT(kpad->gpiomap[off]); + + mutex_lock(&kpad->gpio_lock); + + if (val) + kpad->dat_out[bank] |= bit; + else + kpad->dat_out[bank] &= ~bit; + + adp5589_write(kpad->client, ADP5589_GPO_DATA_OUT_A + bank, + kpad->dat_out[bank]); + + mutex_unlock(&kpad->gpio_lock); +} + +static int adp5589_gpio_direction_input(struct gpio_chip *chip, unsigned off) +{ + struct adp5589_kpad *kpad = container_of(chip, struct adp5589_kpad, gc); + unsigned int bank = ADP_BANK(kpad->gpiomap[off]); + unsigned int bit = ADP_BIT(kpad->gpiomap[off]); + int ret; + + mutex_lock(&kpad->gpio_lock); + + kpad->dir[bank] &= ~bit; + ret = adp5589_write(kpad->client, ADP5589_GPIO_DIRECTION_A + bank, + kpad->dir[bank]); + + mutex_unlock(&kpad->gpio_lock); + + return ret; +} + +static int adp5589_gpio_direction_output(struct gpio_chip *chip, + unsigned off, int val) +{ + struct adp5589_kpad *kpad = container_of(chip, struct adp5589_kpad, gc); + unsigned int bank = ADP_BANK(kpad->gpiomap[off]); + unsigned int bit = ADP_BIT(kpad->gpiomap[off]); + int ret; + + mutex_lock(&kpad->gpio_lock); + + kpad->dir[bank] |= bit; + + if (val) + kpad->dat_out[bank] |= bit; + else + kpad->dat_out[bank] &= ~bit; + + ret = adp5589_write(kpad->client, ADP5589_GPO_DATA_OUT_A + bank, + kpad->dat_out[bank]); + ret |= adp5589_write(kpad->client, ADP5589_GPIO_DIRECTION_A + bank, + kpad->dir[bank]); + + mutex_unlock(&kpad->gpio_lock); + + return ret; +} + +static int __devinit adp5589_build_gpiomap(struct adp5589_kpad *kpad, + const struct adp5589_kpad_platform_data *pdata) +{ + bool pin_used[MAXGPIO]; + int n_unused = 0; + int i; + + memset(pin_used, false, sizeof(pin_used)); + + for (i = 0; i < MAXGPIO; i++) + if (pdata->keypad_en_mask & (1 << i)) + pin_used[i] = true; + + for (i = 0; i < kpad->gpimapsize; i++) + pin_used[kpad->gpimap[i].pin - ADP5589_GPI_PIN_BASE] = true; + + if (kpad->extend_cfg & R4_EXTEND_CFG) + pin_used[4] = true; + + if (kpad->extend_cfg & C4_EXTEND_CFG) + pin_used[12] = true; + + for (i = 0; i < MAXGPIO; i++) + if (!pin_used[i]) + kpad->gpiomap[n_unused++] = i; + + return n_unused; +} + +static int __devinit adp5589_gpio_add(struct adp5589_kpad *kpad) +{ + struct device *dev = &kpad->client->dev; + const struct adp5589_kpad_platform_data *pdata = dev->platform_data; + const struct adp5589_gpio_platform_data *gpio_data = pdata->gpio_data; + int i, error; + + if (!gpio_data) + return 0; + + kpad->gc.ngpio = adp5589_build_gpiomap(kpad, pdata); + if (kpad->gc.ngpio == 0) { + dev_info(dev, "No unused gpios left to export\n"); + return 0; + } + + kpad->export_gpio = true; + + kpad->gc.direction_input = adp5589_gpio_direction_input; + kpad->gc.direction_output = adp5589_gpio_direction_output; + kpad->gc.get = adp5589_gpio_get_value; + kpad->gc.set = adp5589_gpio_set_value; + kpad->gc.can_sleep = 1; + + kpad->gc.base = gpio_data->gpio_start; + kpad->gc.label = kpad->client->name; + kpad->gc.owner = THIS_MODULE; + + mutex_init(&kpad->gpio_lock); + + error = gpiochip_add(&kpad->gc); + if (error) { + dev_err(dev, "gpiochip_add failed, err: %d\n", error); + return error; + } + + for (i = 0; i <= ADP_BANK(MAXGPIO); i++) { + kpad->dat_out[i] = adp5589_read(kpad->client, + ADP5589_GPO_DATA_OUT_A + i); + kpad->dir[i] = adp5589_read(kpad->client, + ADP5589_GPIO_DIRECTION_A + i); + } + + if (gpio_data->setup) { + error = gpio_data->setup(kpad->client, + kpad->gc.base, kpad->gc.ngpio, + gpio_data->context); + if (error) + dev_warn(dev, "setup failed, %d\n", error); + } + + return 0; +} + +static void __devexit adp5589_gpio_remove(struct adp5589_kpad *kpad) +{ + struct device *dev = &kpad->client->dev; + const struct adp5589_kpad_platform_data *pdata = dev->platform_data; + const struct adp5589_gpio_platform_data *gpio_data = pdata->gpio_data; + int error; + + if (!kpad->export_gpio) + return; + + if (gpio_data->teardown) { + error = gpio_data->teardown(kpad->client, + kpad->gc.base, kpad->gc.ngpio, + gpio_data->context); + if (error) + dev_warn(dev, "teardown failed %d\n", error); + } + + error = gpiochip_remove(&kpad->gc); + if (error) + dev_warn(dev, "gpiochip_remove failed %d\n", error); +} +#else +static inline int adp5589_gpio_add(struct adp5589_kpad *kpad) +{ + return 0; +} + +static inline void adp5589_gpio_remove(struct adp5589_kpad *kpad) +{ +} +#endif + +static void adp5589_report_switches(struct adp5589_kpad *kpad, + int key, int key_val) +{ + int i; + + for (i = 0; i < kpad->gpimapsize; i++) { + if (key_val == kpad->gpimap[i].pin) { + input_report_switch(kpad->input, + kpad->gpimap[i].sw_evt, + key & KEY_EV_PRESSED); + break; + } + } +} + +static void adp5589_report_events(struct adp5589_kpad *kpad, int ev_cnt) +{ + int i; + + for (i = 0; i < ev_cnt; i++) { + int key = adp5589_read(kpad->client, ADP5589_FIFO_1 + i); + int key_val = key & KEY_EV_MASK; + + if (key_val >= ADP5589_GPI_PIN_BASE && + key_val <= ADP5589_GPI_PIN_END) { + adp5589_report_switches(kpad, key, key_val); + } else { + input_report_key(kpad->input, + kpad->keycode[key_val - 1], + key & KEY_EV_PRESSED); + } + } +} + +static irqreturn_t adp5589_irq(int irq, void *handle) +{ + struct adp5589_kpad *kpad = handle; + struct i2c_client *client = kpad->client; + int status, ev_cnt; + + status = adp5589_read(client, ADP5589_INT_STATUS); + + if (status & OVRFLOW_INT) /* Unlikely and should never happen */ + dev_err(&client->dev, "Event Overflow Error\n"); + + if (status & EVENT_INT) { + ev_cnt = adp5589_read(client, ADP5589_STATUS) & KEC; + if (ev_cnt) { + adp5589_report_events(kpad, ev_cnt); + input_sync(kpad->input); + } + } + + adp5589_write(client, ADP5589_INT_STATUS, status); /* Status is W1C */ + + return IRQ_HANDLED; +} + +static int __devinit adp5589_get_evcode(struct adp5589_kpad *kpad, unsigned short key) +{ + int i; + + for (i = 0; i < ADP5589_KEYMAPSIZE; i++) + if (key == kpad->keycode[i]) + return (i + 1) | KEY_EV_PRESSED; + + dev_err(&kpad->client->dev, "RESET/UNLOCK key not in keycode map\n"); + + return -EINVAL; +} + +static int __devinit adp5589_setup(struct adp5589_kpad *kpad) +{ + struct i2c_client *client = kpad->client; + const struct adp5589_kpad_platform_data *pdata = + client->dev.platform_data; + int i, ret; + unsigned char evt_mode1 = 0, evt_mode2 = 0, evt_mode3 = 0; + unsigned char pull_mask = 0; + + ret = adp5589_write(client, ADP5589_PIN_CONFIG_A, + pdata->keypad_en_mask & 0xFF); + ret |= adp5589_write(client, ADP5589_PIN_CONFIG_B, + (pdata->keypad_en_mask >> 8) & 0xFF); + ret |= adp5589_write(client, ADP5589_PIN_CONFIG_C, + (pdata->keypad_en_mask >> 16) & 0xFF); + + if (pdata->en_keylock) { + ret |= adp5589_write(client, ADP5589_UNLOCK1, + pdata->unlock_key1); + ret |= adp5589_write(client, ADP5589_UNLOCK2, + pdata->unlock_key2); + ret |= adp5589_write(client, ADP5589_UNLOCK_TIMERS, + pdata->unlock_timer & LTIME_MASK); + ret |= adp5589_write(client, ADP5589_LOCK_CFG, LOCK_EN); + } + + for (i = 0; i < KEYP_MAX_EVENT; i++) + ret |= adp5589_read(client, ADP5589_FIFO_1 + i); + + for (i = 0; i < pdata->gpimapsize; i++) { + unsigned short pin = pdata->gpimap[i].pin; + + if (pin <= ADP5589_GPI_PIN_ROW_END) { + evt_mode1 |= (1 << (pin - ADP5589_GPI_PIN_ROW_BASE)); + } else { + evt_mode2 |= + ((1 << (pin - ADP5589_GPI_PIN_COL_BASE)) & 0xFF); + evt_mode3 |= + ((1 << (pin - ADP5589_GPI_PIN_COL_BASE)) >> 8); + } + } + + if (pdata->gpimapsize) { + ret |= adp5589_write(client, ADP5589_GPI_EVENT_EN_A, evt_mode1); + ret |= adp5589_write(client, ADP5589_GPI_EVENT_EN_B, evt_mode2); + ret |= adp5589_write(client, ADP5589_GPI_EVENT_EN_C, evt_mode3); + } + + if (pdata->pull_dis_mask & pdata->pullup_en_100k & + pdata->pullup_en_300k & pdata->pulldown_en_300k) + dev_warn(&client->dev, "Conflicting pull resistor config\n"); + + for (i = 0; i < MAXGPIO; i++) { + unsigned val = 0; + + if (pdata->pullup_en_300k & (1 << i)) + val = 0; + else if (pdata->pulldown_en_300k & (1 << i)) + val = 1; + else if (pdata->pullup_en_100k & (1 << i)) + val = 2; + else if (pdata->pull_dis_mask & (1 << i)) + val = 3; + + pull_mask |= val << (2 * (i & 0x3)); + + if ((i & 0x3) == 0x3 || i == MAXGPIO - 1) { + ret |= adp5589_write(client, + ADP5589_RPULL_CONFIG_A + (i >> 2), + pull_mask); + pull_mask = 0; + } + } + + if (pdata->reset1_key_1 && pdata->reset1_key_2 && pdata->reset1_key_3) { + ret |= adp5589_write(client, ADP5589_RESET1_EVENT_A, + adp5589_get_evcode(kpad, + pdata->reset1_key_1)); + ret |= adp5589_write(client, ADP5589_RESET1_EVENT_B, + adp5589_get_evcode(kpad, + pdata->reset1_key_2)); + ret |= adp5589_write(client, ADP5589_RESET1_EVENT_C, + adp5589_get_evcode(kpad, + pdata->reset1_key_3)); + kpad->extend_cfg |= R4_EXTEND_CFG; + } + + if (pdata->reset2_key_1 && pdata->reset2_key_2) { + ret |= adp5589_write(client, ADP5589_RESET2_EVENT_A, + adp5589_get_evcode(kpad, + pdata->reset2_key_1)); + ret |= adp5589_write(client, ADP5589_RESET2_EVENT_B, + adp5589_get_evcode(kpad, + pdata->reset2_key_2)); + kpad->extend_cfg |= C4_EXTEND_CFG; + } + + if (kpad->extend_cfg) { + ret |= adp5589_write(client, ADP5589_RESET_CFG, + pdata->reset_cfg); + ret |= adp5589_write(client, ADP5589_PIN_CONFIG_D, + kpad->extend_cfg); + } + + for (i = 0; i <= ADP_BANK(MAXGPIO); i++) + ret |= adp5589_write(client, ADP5589_DEBOUNCE_DIS_A + i, + pdata->debounce_dis_mask >> (i * 8)); + + ret |= adp5589_write(client, ADP5589_POLL_PTIME_CFG, + pdata->scan_cycle_time & PTIME_MASK); + ret |= adp5589_write(client, ADP5589_INT_STATUS, LOGIC2_INT | + LOGIC1_INT | OVRFLOW_INT | LOCK_INT | + GPI_INT | EVENT_INT); /* Status is W1C */ + + ret |= adp5589_write(client, ADP5589_GENERAL_CFG, + INT_CFG | OSC_EN | CORE_CLK(3)); + ret |= adp5589_write(client, ADP5589_INT_EN, + OVRFLOW_IEN | GPI_IEN | EVENT_IEN); + + if (ret < 0) { + dev_err(&client->dev, "Write Error\n"); + return ret; + } + + return 0; +} + +static void __devinit adp5589_report_switch_state(struct adp5589_kpad *kpad) +{ + int gpi_stat1 = adp5589_read(kpad->client, ADP5589_GPI_STATUS_A); + int gpi_stat2 = adp5589_read(kpad->client, ADP5589_GPI_STATUS_B); + int gpi_stat3 = adp5589_read(kpad->client, ADP5589_GPI_STATUS_C); + int gpi_stat_tmp, pin_loc; + int i; + + for (i = 0; i < kpad->gpimapsize; i++) { + unsigned short pin = kpad->gpimap[i].pin; + + if (pin <= ADP5589_GPI_PIN_ROW_END) { + gpi_stat_tmp = gpi_stat1; + pin_loc = pin - ADP5589_GPI_PIN_ROW_BASE; + } else if ((pin - ADP5589_GPI_PIN_COL_BASE) < 8) { + gpi_stat_tmp = gpi_stat2; + pin_loc = pin - ADP5589_GPI_PIN_COL_BASE; + } else { + gpi_stat_tmp = gpi_stat3; + pin_loc = pin - ADP5589_GPI_PIN_COL_BASE - 8; + } + + if (gpi_stat_tmp < 0) { + dev_err(&kpad->client->dev, + "Can't read GPIO_DAT_STAT switch" + " %d default to OFF\n", pin); + gpi_stat_tmp = 0; + } + + input_report_switch(kpad->input, + kpad->gpimap[i].sw_evt, + !(gpi_stat_tmp & (1 << pin_loc))); + } + + input_sync(kpad->input); +} + +static int __devinit adp5589_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct adp5589_kpad *kpad; + const struct adp5589_kpad_platform_data *pdata; + struct input_dev *input; + unsigned int revid; + int ret, i; + int error; + + if (!i2c_check_functionality(client->adapter, + I2C_FUNC_SMBUS_BYTE_DATA)) { + dev_err(&client->dev, "SMBUS Byte Data not Supported\n"); + return -EIO; + } + + pdata = client->dev.platform_data; + if (!pdata) { + dev_err(&client->dev, "no platform data?\n"); + return -EINVAL; + } + + if (!((pdata->keypad_en_mask & 0xFF) && + (pdata->keypad_en_mask >> 8)) || !pdata->keymap) { + dev_err(&client->dev, "no rows, cols or keymap from pdata\n"); + return -EINVAL; + } + + if (pdata->keymapsize != ADP5589_KEYMAPSIZE) { + dev_err(&client->dev, "invalid keymapsize\n"); + return -EINVAL; + } + + if (!pdata->gpimap && pdata->gpimapsize) { + dev_err(&client->dev, "invalid gpimap from pdata\n"); + return -EINVAL; + } + + if (pdata->gpimapsize > ADP5589_GPIMAPSIZE_MAX) { + dev_err(&client->dev, "invalid gpimapsize\n"); + return -EINVAL; + } + + for (i = 0; i < pdata->gpimapsize; i++) { + unsigned short pin = pdata->gpimap[i].pin; + + if (pin < ADP5589_GPI_PIN_BASE || pin > ADP5589_GPI_PIN_END) { + dev_err(&client->dev, "invalid gpi pin data\n"); + return -EINVAL; + } + + if ((1 << (pin - ADP5589_GPI_PIN_ROW_BASE)) & + pdata->keypad_en_mask) { + dev_err(&client->dev, "invalid gpi row/col data\n"); + return -EINVAL; + } + } + + if (!client->irq) { + dev_err(&client->dev, "no IRQ?\n"); + return -EINVAL; + } + + kpad = kzalloc(sizeof(*kpad), GFP_KERNEL); + input = input_allocate_device(); + if (!kpad || !input) { + error = -ENOMEM; + goto err_free_mem; + } + + kpad->client = client; + kpad->input = input; + + ret = adp5589_read(client, ADP5589_ID); + if (ret < 0) { + error = ret; + goto err_free_mem; + } + + revid = (u8) ret & ADP5589_DEVICE_ID_MASK; + + input->name = client->name; + input->phys = "adp5589-keys/input0"; + input->dev.parent = &client->dev; + + input_set_drvdata(input, kpad); + + input->id.bustype = BUS_I2C; + input->id.vendor = 0x0001; + input->id.product = 0x0001; + input->id.version = revid; + + input->keycodesize = sizeof(kpad->keycode[0]); + input->keycodemax = pdata->keymapsize; + input->keycode = kpad->keycode; + + memcpy(kpad->keycode, pdata->keymap, + pdata->keymapsize * input->keycodesize); + + kpad->gpimap = pdata->gpimap; + kpad->gpimapsize = pdata->gpimapsize; + + /* setup input device */ + __set_bit(EV_KEY, input->evbit); + + if (pdata->repeat) + __set_bit(EV_REP, input->evbit); + + for (i = 0; i < input->keycodemax; i++) + __set_bit(kpad->keycode[i] & KEY_MAX, input->keybit); + __clear_bit(KEY_RESERVED, input->keybit); + + if (kpad->gpimapsize) + __set_bit(EV_SW, input->evbit); + for (i = 0; i < kpad->gpimapsize; i++) + __set_bit(kpad->gpimap[i].sw_evt, input->swbit); + + error = input_register_device(input); + if (error) { + dev_err(&client->dev, "unable to register input device\n"); + goto err_free_mem; + } + + error = request_threaded_irq(client->irq, NULL, adp5589_irq, + IRQF_TRIGGER_FALLING | IRQF_ONESHOT, + client->dev.driver->name, kpad); + if (error) { + dev_err(&client->dev, "irq %d busy?\n", client->irq); + goto err_unreg_dev; + } + + error = adp5589_setup(kpad); + if (error) + goto err_free_irq; + + if (kpad->gpimapsize) + adp5589_report_switch_state(kpad); + + error = adp5589_gpio_add(kpad); + if (error) + goto err_free_irq; + + device_init_wakeup(&client->dev, 1); + i2c_set_clientdata(client, kpad); + + dev_info(&client->dev, "Rev.%d keypad, irq %d\n", revid, client->irq); + return 0; + +err_free_irq: + free_irq(client->irq, kpad); +err_unreg_dev: + input_unregister_device(input); + input = NULL; +err_free_mem: + input_free_device(input); + kfree(kpad); + + return error; +} + +static int __devexit adp5589_remove(struct i2c_client *client) +{ + struct adp5589_kpad *kpad = i2c_get_clientdata(client); + + adp5589_write(client, ADP5589_GENERAL_CFG, 0); + free_irq(client->irq, kpad); + input_unregister_device(kpad->input); + adp5589_gpio_remove(kpad); + kfree(kpad); + + return 0; +} + +#ifdef CONFIG_PM_SLEEP +static int adp5589_suspend(struct device *dev) +{ + struct adp5589_kpad *kpad = dev_get_drvdata(dev); + struct i2c_client *client = kpad->client; + + disable_irq(client->irq); + + if (device_may_wakeup(&client->dev)) + enable_irq_wake(client->irq); + + return 0; +} + +static int adp5589_resume(struct device *dev) +{ + struct adp5589_kpad *kpad = dev_get_drvdata(dev); + struct i2c_client *client = kpad->client; + + if (device_may_wakeup(&client->dev)) + disable_irq_wake(client->irq); + + enable_irq(client->irq); + + return 0; +} +#endif + +static SIMPLE_DEV_PM_OPS(adp5589_dev_pm_ops, adp5589_suspend, adp5589_resume); + +static const struct i2c_device_id adp5589_id[] = { + {"adp5589-keys", 0}, + {} +}; + +MODULE_DEVICE_TABLE(i2c, adp5589_id); + +static struct i2c_driver adp5589_driver = { + .driver = { + .name = KBUILD_MODNAME, + .owner = THIS_MODULE, + .pm = &adp5589_dev_pm_ops, + }, + .probe = adp5589_probe, + .remove = __devexit_p(adp5589_remove), + .id_table = adp5589_id, +}; + +static int __init adp5589_init(void) +{ + return i2c_add_driver(&adp5589_driver); +} +module_init(adp5589_init); + +static void __exit adp5589_exit(void) +{ + i2c_del_driver(&adp5589_driver); +} +module_exit(adp5589_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Michael Hennerich "); +MODULE_DESCRIPTION("ADP5589 Keypad driver"); diff --git a/include/linux/input/adp5589.h b/include/linux/input/adp5589.h new file mode 100644 index 000000000000..ef792ecfaabf --- /dev/null +++ b/include/linux/input/adp5589.h @@ -0,0 +1,213 @@ +/* + * Analog Devices ADP5589 I/O Expander and QWERTY Keypad Controller + * + * Copyright 2010-2011 Analog Devices Inc. + * + * Licensed under the GPL-2. + */ + +#ifndef _ADP5589_H +#define _ADP5589_H + +#define ADP5589_ID 0x00 +#define ADP5589_INT_STATUS 0x01 +#define ADP5589_STATUS 0x02 +#define ADP5589_FIFO_1 0x03 +#define ADP5589_FIFO_2 0x04 +#define ADP5589_FIFO_3 0x05 +#define ADP5589_FIFO_4 0x06 +#define ADP5589_FIFO_5 0x07 +#define ADP5589_FIFO_6 0x08 +#define ADP5589_FIFO_7 0x09 +#define ADP5589_FIFO_8 0x0A +#define ADP5589_FIFO_9 0x0B +#define ADP5589_FIFO_10 0x0C +#define ADP5589_FIFO_11 0x0D +#define ADP5589_FIFO_12 0x0E +#define ADP5589_FIFO_13 0x0F +#define ADP5589_FIFO_14 0x10 +#define ADP5589_FIFO_15 0x11 +#define ADP5589_FIFO_16 0x12 +#define ADP5589_GPI_INT_STAT_A 0x13 +#define ADP5589_GPI_INT_STAT_B 0x14 +#define ADP5589_GPI_INT_STAT_C 0x15 +#define ADP5589_GPI_STATUS_A 0x16 +#define ADP5589_GPI_STATUS_B 0x17 +#define ADP5589_GPI_STATUS_C 0x18 +#define ADP5589_RPULL_CONFIG_A 0x19 +#define ADP5589_RPULL_CONFIG_B 0x1A +#define ADP5589_RPULL_CONFIG_C 0x1B +#define ADP5589_RPULL_CONFIG_D 0x1C +#define ADP5589_RPULL_CONFIG_E 0x1D +#define ADP5589_GPI_INT_LEVEL_A 0x1E +#define ADP5589_GPI_INT_LEVEL_B 0x1F +#define ADP5589_GPI_INT_LEVEL_C 0x20 +#define ADP5589_GPI_EVENT_EN_A 0x21 +#define ADP5589_GPI_EVENT_EN_B 0x22 +#define ADP5589_GPI_EVENT_EN_C 0x23 +#define ADP5589_GPI_INTERRUPT_EN_A 0x24 +#define ADP5589_GPI_INTERRUPT_EN_B 0x25 +#define ADP5589_GPI_INTERRUPT_EN_C 0x26 +#define ADP5589_DEBOUNCE_DIS_A 0x27 +#define ADP5589_DEBOUNCE_DIS_B 0x28 +#define ADP5589_DEBOUNCE_DIS_C 0x29 +#define ADP5589_GPO_DATA_OUT_A 0x2A +#define ADP5589_GPO_DATA_OUT_B 0x2B +#define ADP5589_GPO_DATA_OUT_C 0x2C +#define ADP5589_GPO_OUT_MODE_A 0x2D +#define ADP5589_GPO_OUT_MODE_B 0x2E +#define ADP5589_GPO_OUT_MODE_C 0x2F +#define ADP5589_GPIO_DIRECTION_A 0x30 +#define ADP5589_GPIO_DIRECTION_B 0x31 +#define ADP5589_GPIO_DIRECTION_C 0x32 +#define ADP5589_UNLOCK1 0x33 +#define ADP5589_UNLOCK2 0x34 +#define ADP5589_EXT_LOCK_EVENT 0x35 +#define ADP5589_UNLOCK_TIMERS 0x36 +#define ADP5589_LOCK_CFG 0x37 +#define ADP5589_RESET1_EVENT_A 0x38 +#define ADP5589_RESET1_EVENT_B 0x39 +#define ADP5589_RESET1_EVENT_C 0x3A +#define ADP5589_RESET2_EVENT_A 0x3B +#define ADP5589_RESET2_EVENT_B 0x3C +#define ADP5589_RESET_CFG 0x3D +#define ADP5589_PWM_OFFT_LOW 0x3E +#define ADP5589_PWM_OFFT_HIGH 0x3F +#define ADP5589_PWM_ONT_LOW 0x40 +#define ADP5589_PWM_ONT_HIGH 0x41 +#define ADP5589_PWM_CFG 0x42 +#define ADP5589_CLOCK_DIV_CFG 0x43 +#define ADP5589_LOGIC_1_CFG 0x44 +#define ADP5589_LOGIC_2_CFG 0x45 +#define ADP5589_LOGIC_FF_CFG 0x46 +#define ADP5589_LOGIC_INT_EVENT_EN 0x47 +#define ADP5589_POLL_PTIME_CFG 0x48 +#define ADP5589_PIN_CONFIG_A 0x49 +#define ADP5589_PIN_CONFIG_B 0x4A +#define ADP5589_PIN_CONFIG_C 0x4B +#define ADP5589_PIN_CONFIG_D 0x4C +#define ADP5589_GENERAL_CFG 0x4D +#define ADP5589_INT_EN 0x4E + +#define ADP5589_DEVICE_ID_MASK 0xF + +/* Put one of these structures in i2c_board_info platform_data */ + +#define ADP5589_KEYMAPSIZE 88 + +#define ADP5589_GPI_PIN_ROW0 97 +#define ADP5589_GPI_PIN_ROW1 98 +#define ADP5589_GPI_PIN_ROW2 99 +#define ADP5589_GPI_PIN_ROW3 100 +#define ADP5589_GPI_PIN_ROW4 101 +#define ADP5589_GPI_PIN_ROW5 102 +#define ADP5589_GPI_PIN_ROW6 103 +#define ADP5589_GPI_PIN_ROW7 104 +#define ADP5589_GPI_PIN_COL0 105 +#define ADP5589_GPI_PIN_COL1 106 +#define ADP5589_GPI_PIN_COL2 107 +#define ADP5589_GPI_PIN_COL3 108 +#define ADP5589_GPI_PIN_COL4 109 +#define ADP5589_GPI_PIN_COL5 110 +#define ADP5589_GPI_PIN_COL6 111 +#define ADP5589_GPI_PIN_COL7 112 +#define ADP5589_GPI_PIN_COL8 113 +#define ADP5589_GPI_PIN_COL9 114 +#define ADP5589_GPI_PIN_COL10 115 +#define GPI_LOGIC1 116 +#define GPI_LOGIC2 117 + +#define ADP5589_GPI_PIN_ROW_BASE ADP5589_GPI_PIN_ROW0 +#define ADP5589_GPI_PIN_ROW_END ADP5589_GPI_PIN_ROW7 +#define ADP5589_GPI_PIN_COL_BASE ADP5589_GPI_PIN_COL0 +#define ADP5589_GPI_PIN_COL_END ADP5589_GPI_PIN_COL10 + +#define ADP5589_GPI_PIN_BASE ADP5589_GPI_PIN_ROW_BASE +#define ADP5589_GPI_PIN_END ADP5589_GPI_PIN_COL_END + +#define ADP5589_GPIMAPSIZE_MAX (ADP5589_GPI_PIN_END - ADP5589_GPI_PIN_BASE + 1) + +struct adp5589_gpi_map { + unsigned short pin; + unsigned short sw_evt; +}; + +/* scan_cycle_time */ +#define ADP5589_SCAN_CYCLE_10ms 0 +#define ADP5589_SCAN_CYCLE_20ms 1 +#define ADP5589_SCAN_CYCLE_30ms 2 +#define ADP5589_SCAN_CYCLE_40ms 3 + +/* RESET_CFG */ +#define RESET_PULSE_WIDTH_500us 0 +#define RESET_PULSE_WIDTH_1ms 1 +#define RESET_PULSE_WIDTH_2ms 2 +#define RESET_PULSE_WIDTH_10ms 3 + +#define RESET_TRIG_TIME_0ms (0 << 2) +#define RESET_TRIG_TIME_1000ms (1 << 2) +#define RESET_TRIG_TIME_1500ms (2 << 2) +#define RESET_TRIG_TIME_2000ms (3 << 2) +#define RESET_TRIG_TIME_2500ms (4 << 2) +#define RESET_TRIG_TIME_3000ms (5 << 2) +#define RESET_TRIG_TIME_3500ms (6 << 2) +#define RESET_TRIG_TIME_4000ms (7 << 2) + +#define RESET_PASSTHRU_EN (1 << 5) +#define RESET1_POL_HIGH (1 << 6) +#define RESET1_POL_LOW (0 << 6) +#define RESET2_POL_HIGH (1 << 7) +#define RESET2_POL_LOW (0 << 7) + +/* Mask Bits: + * C C C C C C C C C C C | R R R R R R R R + * 1 9 8 7 6 5 4 3 2 1 0 | 7 6 5 4 3 2 1 0 + * 0 + * ---------------- BIT ------------------ + * 1 1 1 1 1 1 1 1 1 0 0 | 0 0 0 0 0 0 0 0 + * 8 7 6 5 4 3 2 1 0 9 8 | 7 6 5 4 3 2 1 0 + */ + +#define ADP_ROW(x) (1 << (x)) +#define ADP_COL(x) (1 << (x + 8)) + +struct adp5589_kpad_platform_data { + unsigned keypad_en_mask; /* Keypad (Rows/Columns) enable mask */ + const unsigned short *keymap; /* Pointer to keymap */ + unsigned short keymapsize; /* Keymap size */ + bool repeat; /* Enable key repeat */ + bool en_keylock; /* Enable key lock feature */ + unsigned char unlock_key1; /* Unlock Key 1 */ + unsigned char unlock_key2; /* Unlock Key 2 */ + unsigned char unlock_timer; /* Time in seconds [0..7] between the two unlock keys 0=disable */ + unsigned char scan_cycle_time; /* Time between consecutive scan cycles */ + unsigned char reset_cfg; /* Reset config */ + unsigned short reset1_key_1; /* Reset Key 1 */ + unsigned short reset1_key_2; /* Reset Key 2 */ + unsigned short reset1_key_3; /* Reset Key 3 */ + unsigned short reset2_key_1; /* Reset Key 1 */ + unsigned short reset2_key_2; /* Reset Key 2 */ + unsigned debounce_dis_mask; /* Disable debounce mask */ + unsigned pull_dis_mask; /* Disable all pull resistors mask */ + unsigned pullup_en_100k; /* Pull-Up 100k Enable Mask */ + unsigned pullup_en_300k; /* Pull-Up 300k Enable Mask */ + unsigned pulldown_en_300k; /* Pull-Down 300k Enable Mask */ + const struct adp5589_gpi_map *gpimap; + unsigned short gpimapsize; + const struct adp5589_gpio_platform_data *gpio_data; +}; + +struct i2c_client; /* forward declaration */ + +struct adp5589_gpio_platform_data { + int gpio_start; /* GPIO Chip base # */ + int (*setup)(struct i2c_client *client, + int gpio, unsigned ngpio, + void *context); + int (*teardown)(struct i2c_client *client, + int gpio, unsigned ngpio, + void *context); + void *context; +}; + +#endif -- cgit v1.2.3-71-gd317 From 39325b59d88b42ba2ccf2e62c234059e9941a47c Mon Sep 17 00:00:00 2001 From: Trilok Soni Date: Thu, 19 May 2011 10:54:04 +0530 Subject: input: Add Qualcomm pm8xxx keypad controller driver Add Qualcomm PMIC8XXX based keypad controller driver supporting upto 18x8 matrix configuration. Acked-by: Dmitry Torokhov Signed-off-by: Trilok Soni Signed-off-by: Anirudh Ghayal Signed-off-by: Samuel Ortiz --- drivers/input/keyboard/Kconfig | 11 + drivers/input/keyboard/Makefile | 1 + drivers/input/keyboard/pmic8xxx-keypad.c | 799 +++++++++++++++++++++++++++++++ include/linux/input/pmic8xxx-keypad.h | 52 ++ 4 files changed, 863 insertions(+) create mode 100644 drivers/input/keyboard/pmic8xxx-keypad.c create mode 100644 include/linux/input/pmic8xxx-keypad.h (limited to 'include/linux/input') diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig index 69badb4e06aa..b4dee9d5a055 100644 --- a/drivers/input/keyboard/Kconfig +++ b/drivers/input/keyboard/Kconfig @@ -412,6 +412,17 @@ config KEYBOARD_PXA930_ROTARY To compile this driver as a module, choose M here: the module will be called pxa930_rotary. +config KEYBOARD_PMIC8XXX + tristate "Qualcomm PMIC8XXX keypad support" + depends on MFD_PM8XXX + help + Say Y here if you want to enable the driver for the PMIC8XXX + keypad provided as a reference design from Qualcomm. This is intended + to support upto 18x8 matrix based keypad design. + + To compile this driver as a module, choose M here: the module will + be called pmic8xxx-keypad. + config KEYBOARD_SAMSUNG tristate "Samsung keypad support" depends on SAMSUNG_DEV_KEYPAD diff --git a/drivers/input/keyboard/Makefile b/drivers/input/keyboard/Makefile index c49cf8e04cd7..ddde0fd476f7 100644 --- a/drivers/input/keyboard/Makefile +++ b/drivers/input/keyboard/Makefile @@ -34,6 +34,7 @@ obj-$(CONFIG_KEYBOARD_NOMADIK) += nomadik-ske-keypad.o obj-$(CONFIG_KEYBOARD_OMAP) += omap-keypad.o obj-$(CONFIG_KEYBOARD_OMAP4) += omap4-keypad.o obj-$(CONFIG_KEYBOARD_OPENCORES) += opencores-kbd.o +obj-$(CONFIG_KEYBOARD_PMIC8XXX) += pmic8xxx-keypad.o obj-$(CONFIG_KEYBOARD_PXA27x) += pxa27x_keypad.o obj-$(CONFIG_KEYBOARD_PXA930_ROTARY) += pxa930_rotary.o obj-$(CONFIG_KEYBOARD_QT1070) += qt1070.o diff --git a/drivers/input/keyboard/pmic8xxx-keypad.c b/drivers/input/keyboard/pmic8xxx-keypad.c new file mode 100644 index 000000000000..40b02ae96f86 --- /dev/null +++ b/drivers/input/keyboard/pmic8xxx-keypad.c @@ -0,0 +1,799 @@ +/* Copyright (c) 2009-2011, Code Aurora Forum. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#define PM8XXX_MAX_ROWS 18 +#define PM8XXX_MAX_COLS 8 +#define PM8XXX_ROW_SHIFT 3 +#define PM8XXX_MATRIX_MAX_SIZE (PM8XXX_MAX_ROWS * PM8XXX_MAX_COLS) + +#define PM8XXX_MIN_ROWS 5 +#define PM8XXX_MIN_COLS 5 + +#define MAX_SCAN_DELAY 128 +#define MIN_SCAN_DELAY 1 + +/* in nanoseconds */ +#define MAX_ROW_HOLD_DELAY 122000 +#define MIN_ROW_HOLD_DELAY 30500 + +#define MAX_DEBOUNCE_TIME 20 +#define MIN_DEBOUNCE_TIME 5 + +#define KEYP_CTRL 0x148 + +#define KEYP_CTRL_EVNTS BIT(0) +#define KEYP_CTRL_EVNTS_MASK 0x3 + +#define KEYP_CTRL_SCAN_COLS_SHIFT 5 +#define KEYP_CTRL_SCAN_COLS_MIN 5 +#define KEYP_CTRL_SCAN_COLS_BITS 0x3 + +#define KEYP_CTRL_SCAN_ROWS_SHIFT 2 +#define KEYP_CTRL_SCAN_ROWS_MIN 5 +#define KEYP_CTRL_SCAN_ROWS_BITS 0x7 + +#define KEYP_CTRL_KEYP_EN BIT(7) + +#define KEYP_SCAN 0x149 + +#define KEYP_SCAN_READ_STATE BIT(0) +#define KEYP_SCAN_DBOUNCE_SHIFT 1 +#define KEYP_SCAN_PAUSE_SHIFT 3 +#define KEYP_SCAN_ROW_HOLD_SHIFT 6 + +#define KEYP_TEST 0x14A + +#define KEYP_TEST_CLEAR_RECENT_SCAN BIT(6) +#define KEYP_TEST_CLEAR_OLD_SCAN BIT(5) +#define KEYP_TEST_READ_RESET BIT(4) +#define KEYP_TEST_DTEST_EN BIT(3) +#define KEYP_TEST_ABORT_READ BIT(0) + +#define KEYP_TEST_DBG_SELECT_SHIFT 1 + +/* bits of these registers represent + * '0' for key press + * '1' for key release + */ +#define KEYP_RECENT_DATA 0x14B +#define KEYP_OLD_DATA 0x14C + +#define KEYP_CLOCK_FREQ 32768 + +/** + * struct pmic8xxx_kp - internal keypad data structure + * @pdata - keypad platform data pointer + * @input - input device pointer for keypad + * @key_sense_irq - key press/release irq number + * @key_stuck_irq - key stuck notification irq number + * @keycodes - array to hold the key codes + * @dev - parent device pointer + * @keystate - present key press/release state + * @stuckstate - present state when key stuck irq + * @ctrl_reg - control register value + */ +struct pmic8xxx_kp { + const struct pm8xxx_keypad_platform_data *pdata; + struct input_dev *input; + int key_sense_irq; + int key_stuck_irq; + + unsigned short keycodes[PM8XXX_MATRIX_MAX_SIZE]; + + struct device *dev; + u16 keystate[PM8XXX_MAX_ROWS]; + u16 stuckstate[PM8XXX_MAX_ROWS]; + + u8 ctrl_reg; +}; + +static int pmic8xxx_kp_write_u8(struct pmic8xxx_kp *kp, + u8 data, u16 reg) +{ + int rc; + + rc = pm8xxx_writeb(kp->dev->parent, reg, data); + return rc; +} + +static int pmic8xxx_kp_read(struct pmic8xxx_kp *kp, + u8 *data, u16 reg, unsigned num_bytes) +{ + int rc; + + rc = pm8xxx_read_buf(kp->dev->parent, reg, data, num_bytes); + return rc; +} + +static int pmic8xxx_kp_read_u8(struct pmic8xxx_kp *kp, + u8 *data, u16 reg) +{ + int rc; + + rc = pmic8xxx_kp_read(kp, data, reg, 1); + return rc; +} + +static u8 pmic8xxx_col_state(struct pmic8xxx_kp *kp, u8 col) +{ + /* all keys pressed on that particular row? */ + if (col == 0x00) + return 1 << kp->pdata->num_cols; + else + return col & ((1 << kp->pdata->num_cols) - 1); +} + +/* + * Synchronous read protocol for RevB0 onwards: + * + * 1. Write '1' to ReadState bit in KEYP_SCAN register + * 2. Wait 2*32KHz clocks, so that HW can successfully enter read mode + * synchronously + * 3. Read rows in old array first if events are more than one + * 4. Read rows in recent array + * 5. Wait 4*32KHz clocks + * 6. Write '0' to ReadState bit of KEYP_SCAN register so that hw can + * synchronously exit read mode. + */ +static int pmic8xxx_chk_sync_read(struct pmic8xxx_kp *kp) +{ + int rc; + u8 scan_val; + + rc = pmic8xxx_kp_read_u8(kp, &scan_val, KEYP_SCAN); + if (rc < 0) { + dev_err(kp->dev, "Error reading KEYP_SCAN reg, rc=%d\n", rc); + return rc; + } + + scan_val |= 0x1; + + rc = pmic8xxx_kp_write_u8(kp, scan_val, KEYP_SCAN); + if (rc < 0) { + dev_err(kp->dev, "Error writing KEYP_SCAN reg, rc=%d\n", rc); + return rc; + } + + /* 2 * 32KHz clocks */ + udelay((2 * DIV_ROUND_UP(USEC_PER_SEC, KEYP_CLOCK_FREQ)) + 1); + + return rc; +} + +static int pmic8xxx_kp_read_data(struct pmic8xxx_kp *kp, u16 *state, + u16 data_reg, int read_rows) +{ + int rc, row; + u8 new_data[PM8XXX_MAX_ROWS]; + + rc = pmic8xxx_kp_read(kp, new_data, data_reg, read_rows); + if (rc) + return rc; + + for (row = 0; row < kp->pdata->num_rows; row++) { + dev_dbg(kp->dev, "new_data[%d] = %d\n", row, + new_data[row]); + state[row] = pmic8xxx_col_state(kp, new_data[row]); + } + + return rc; +} + +static int pmic8xxx_kp_read_matrix(struct pmic8xxx_kp *kp, u16 *new_state, + u16 *old_state) +{ + int rc, read_rows; + u8 scan_val; + + if (kp->pdata->num_rows < PM8XXX_MIN_ROWS) + read_rows = PM8XXX_MIN_ROWS; + else + read_rows = kp->pdata->num_rows; + + pmic8xxx_chk_sync_read(kp); + + if (old_state) { + rc = pmic8xxx_kp_read_data(kp, old_state, KEYP_OLD_DATA, + read_rows); + if (rc < 0) { + dev_err(kp->dev, + "Error reading KEYP_OLD_DATA, rc=%d\n", rc); + return rc; + } + } + + rc = pmic8xxx_kp_read_data(kp, new_state, KEYP_RECENT_DATA, + read_rows); + if (rc < 0) { + dev_err(kp->dev, + "Error reading KEYP_RECENT_DATA, rc=%d\n", rc); + return rc; + } + + /* 4 * 32KHz clocks */ + udelay((4 * DIV_ROUND_UP(USEC_PER_SEC, KEYP_CLOCK_FREQ)) + 1); + + rc = pmic8xxx_kp_read_u8(kp, &scan_val, KEYP_SCAN); + if (rc < 0) { + dev_err(kp->dev, "Error reading KEYP_SCAN reg, rc=%d\n", rc); + return rc; + } + + scan_val &= 0xFE; + rc = pmic8xxx_kp_write_u8(kp, scan_val, KEYP_SCAN); + if (rc < 0) + dev_err(kp->dev, "Error writing KEYP_SCAN reg, rc=%d\n", rc); + + return rc; +} + +static void __pmic8xxx_kp_scan_matrix(struct pmic8xxx_kp *kp, u16 *new_state, + u16 *old_state) +{ + int row, col, code; + + for (row = 0; row < kp->pdata->num_rows; row++) { + int bits_changed = new_state[row] ^ old_state[row]; + + if (!bits_changed) + continue; + + for (col = 0; col < kp->pdata->num_cols; col++) { + if (!(bits_changed & (1 << col))) + continue; + + dev_dbg(kp->dev, "key [%d:%d] %s\n", row, col, + !(new_state[row] & (1 << col)) ? + "pressed" : "released"); + + code = MATRIX_SCAN_CODE(row, col, PM8XXX_ROW_SHIFT); + + input_event(kp->input, EV_MSC, MSC_SCAN, code); + input_report_key(kp->input, + kp->keycodes[code], + !(new_state[row] & (1 << col))); + + input_sync(kp->input); + } + } +} + +static bool pmic8xxx_detect_ghost_keys(struct pmic8xxx_kp *kp, u16 *new_state) +{ + int row, found_first = -1; + u16 check, row_state; + + check = 0; + for (row = 0; row < kp->pdata->num_rows; row++) { + row_state = (~new_state[row]) & + ((1 << kp->pdata->num_cols) - 1); + + if (hweight16(row_state) > 1) { + if (found_first == -1) + found_first = row; + if (check & row_state) { + dev_dbg(kp->dev, "detected ghost key on row[%d]" + " and row[%d]\n", found_first, row); + return true; + } + } + check |= row_state; + } + return false; +} + +static int pmic8xxx_kp_scan_matrix(struct pmic8xxx_kp *kp, unsigned int events) +{ + u16 new_state[PM8XXX_MAX_ROWS]; + u16 old_state[PM8XXX_MAX_ROWS]; + int rc; + + switch (events) { + case 0x1: + rc = pmic8xxx_kp_read_matrix(kp, new_state, NULL); + if (rc < 0) + return rc; + + /* detecting ghost key is not an error */ + if (pmic8xxx_detect_ghost_keys(kp, new_state)) + return 0; + __pmic8xxx_kp_scan_matrix(kp, new_state, kp->keystate); + memcpy(kp->keystate, new_state, sizeof(new_state)); + break; + case 0x3: /* two events - eventcounter is gray-coded */ + rc = pmic8xxx_kp_read_matrix(kp, new_state, old_state); + if (rc < 0) + return rc; + + __pmic8xxx_kp_scan_matrix(kp, old_state, kp->keystate); + __pmic8xxx_kp_scan_matrix(kp, new_state, old_state); + memcpy(kp->keystate, new_state, sizeof(new_state)); + break; + case 0x2: + dev_dbg(kp->dev, "Some key events were lost\n"); + rc = pmic8xxx_kp_read_matrix(kp, new_state, old_state); + if (rc < 0) + return rc; + __pmic8xxx_kp_scan_matrix(kp, old_state, kp->keystate); + __pmic8xxx_kp_scan_matrix(kp, new_state, old_state); + memcpy(kp->keystate, new_state, sizeof(new_state)); + break; + default: + rc = -EINVAL; + } + return rc; +} + +/* + * NOTE: We are reading recent and old data registers blindly + * whenever key-stuck interrupt happens, because events counter doesn't + * get updated when this interrupt happens due to key stuck doesn't get + * considered as key state change. + * + * We are not using old data register contents after they are being read + * because it might report the key which was pressed before the key being stuck + * as stuck key because it's pressed status is stored in the old data + * register. + */ +static irqreturn_t pmic8xxx_kp_stuck_irq(int irq, void *data) +{ + u16 new_state[PM8XXX_MAX_ROWS]; + u16 old_state[PM8XXX_MAX_ROWS]; + int rc; + struct pmic8xxx_kp *kp = data; + + rc = pmic8xxx_kp_read_matrix(kp, new_state, old_state); + if (rc < 0) { + dev_err(kp->dev, "failed to read keypad matrix\n"); + return IRQ_HANDLED; + } + + __pmic8xxx_kp_scan_matrix(kp, new_state, kp->stuckstate); + + return IRQ_HANDLED; +} + +static irqreturn_t pmic8xxx_kp_irq(int irq, void *data) +{ + struct pmic8xxx_kp *kp = data; + u8 ctrl_val, events; + int rc; + + rc = pmic8xxx_kp_read(kp, &ctrl_val, KEYP_CTRL, 1); + if (rc < 0) { + dev_err(kp->dev, "failed to read keyp_ctrl register\n"); + return IRQ_HANDLED; + } + + events = ctrl_val & KEYP_CTRL_EVNTS_MASK; + + rc = pmic8xxx_kp_scan_matrix(kp, events); + if (rc < 0) + dev_err(kp->dev, "failed to scan matrix\n"); + + return IRQ_HANDLED; +} + +static int __devinit pmic8xxx_kpd_init(struct pmic8xxx_kp *kp) +{ + int bits, rc, cycles; + u8 scan_val = 0, ctrl_val = 0; + static const u8 row_bits[] = { + 0, 1, 2, 3, 4, 4, 5, 5, 6, 6, 6, 7, 7, 7, + }; + + /* Find column bits */ + if (kp->pdata->num_cols < KEYP_CTRL_SCAN_COLS_MIN) + bits = 0; + else + bits = kp->pdata->num_cols - KEYP_CTRL_SCAN_COLS_MIN; + ctrl_val = (bits & KEYP_CTRL_SCAN_COLS_BITS) << + KEYP_CTRL_SCAN_COLS_SHIFT; + + /* Find row bits */ + if (kp->pdata->num_rows < KEYP_CTRL_SCAN_ROWS_MIN) + bits = 0; + else + bits = row_bits[kp->pdata->num_rows - KEYP_CTRL_SCAN_ROWS_MIN]; + + ctrl_val |= (bits << KEYP_CTRL_SCAN_ROWS_SHIFT); + + rc = pmic8xxx_kp_write_u8(kp, ctrl_val, KEYP_CTRL); + if (rc < 0) { + dev_err(kp->dev, "Error writing KEYP_CTRL reg, rc=%d\n", rc); + return rc; + } + + bits = (kp->pdata->debounce_ms / 5) - 1; + + scan_val |= (bits << KEYP_SCAN_DBOUNCE_SHIFT); + + bits = fls(kp->pdata->scan_delay_ms) - 1; + scan_val |= (bits << KEYP_SCAN_PAUSE_SHIFT); + + /* Row hold time is a multiple of 32KHz cycles. */ + cycles = (kp->pdata->row_hold_ns * KEYP_CLOCK_FREQ) / NSEC_PER_SEC; + + scan_val |= (cycles << KEYP_SCAN_ROW_HOLD_SHIFT); + + rc = pmic8xxx_kp_write_u8(kp, scan_val, KEYP_SCAN); + if (rc) + dev_err(kp->dev, "Error writing KEYP_SCAN reg, rc=%d\n", rc); + + return rc; + +} + +static int __devinit pmic8xxx_kp_config_gpio(int gpio_start, int num_gpios, + struct pmic8xxx_kp *kp, struct pm_gpio *gpio_config) +{ + int rc, i; + + if (gpio_start < 0 || num_gpios < 0) + return -EINVAL; + + for (i = 0; i < num_gpios; i++) { + rc = pm8xxx_gpio_config(gpio_start + i, gpio_config); + if (rc) { + dev_err(kp->dev, "%s: FAIL pm8xxx_gpio_config():" + "for PM GPIO [%d] rc=%d.\n", + __func__, gpio_start + i, rc); + return rc; + } + } + + return 0; +} + +static int pmic8xxx_kp_enable(struct pmic8xxx_kp *kp) +{ + int rc; + + kp->ctrl_reg |= KEYP_CTRL_KEYP_EN; + + rc = pmic8xxx_kp_write_u8(kp, kp->ctrl_reg, KEYP_CTRL); + if (rc < 0) + dev_err(kp->dev, "Error writing KEYP_CTRL reg, rc=%d\n", rc); + + return rc; +} + +static int pmic8xxx_kp_disable(struct pmic8xxx_kp *kp) +{ + int rc; + + kp->ctrl_reg &= ~KEYP_CTRL_KEYP_EN; + + rc = pmic8xxx_kp_write_u8(kp, kp->ctrl_reg, KEYP_CTRL); + if (rc < 0) + return rc; + + return rc; +} + +static int pmic8xxx_kp_open(struct input_dev *dev) +{ + struct pmic8xxx_kp *kp = input_get_drvdata(dev); + + return pmic8xxx_kp_enable(kp); +} + +static void pmic8xxx_kp_close(struct input_dev *dev) +{ + struct pmic8xxx_kp *kp = input_get_drvdata(dev); + + pmic8xxx_kp_disable(kp); +} + +/* + * keypad controller should be initialized in the following sequence + * only, otherwise it might get into FSM stuck state. + * + * - Initialize keypad control parameters, like no. of rows, columns, + * timing values etc., + * - configure rows and column gpios pull up/down. + * - set irq edge type. + * - enable the keypad controller. + */ +static int __devinit pmic8xxx_kp_probe(struct platform_device *pdev) +{ + const struct pm8xxx_keypad_platform_data *pdata = mfd_get_data(pdev); + const struct matrix_keymap_data *keymap_data; + struct pmic8xxx_kp *kp; + int rc; + u8 ctrl_val; + + struct pm_gpio kypd_drv = { + .direction = PM_GPIO_DIR_OUT, + .output_buffer = PM_GPIO_OUT_BUF_OPEN_DRAIN, + .output_value = 0, + .pull = PM_GPIO_PULL_NO, + .vin_sel = PM_GPIO_VIN_S3, + .out_strength = PM_GPIO_STRENGTH_LOW, + .function = PM_GPIO_FUNC_1, + .inv_int_pol = 1, + }; + + struct pm_gpio kypd_sns = { + .direction = PM_GPIO_DIR_IN, + .pull = PM_GPIO_PULL_UP_31P5, + .vin_sel = PM_GPIO_VIN_S3, + .out_strength = PM_GPIO_STRENGTH_NO, + .function = PM_GPIO_FUNC_NORMAL, + .inv_int_pol = 1, + }; + + + if (!pdata || !pdata->num_cols || !pdata->num_rows || + pdata->num_cols > PM8XXX_MAX_COLS || + pdata->num_rows > PM8XXX_MAX_ROWS || + pdata->num_cols < PM8XXX_MIN_COLS) { + dev_err(&pdev->dev, "invalid platform data\n"); + return -EINVAL; + } + + if (!pdata->scan_delay_ms || + pdata->scan_delay_ms > MAX_SCAN_DELAY || + pdata->scan_delay_ms < MIN_SCAN_DELAY || + !is_power_of_2(pdata->scan_delay_ms)) { + dev_err(&pdev->dev, "invalid keypad scan time supplied\n"); + return -EINVAL; + } + + if (!pdata->row_hold_ns || + pdata->row_hold_ns > MAX_ROW_HOLD_DELAY || + pdata->row_hold_ns < MIN_ROW_HOLD_DELAY || + ((pdata->row_hold_ns % MIN_ROW_HOLD_DELAY) != 0)) { + dev_err(&pdev->dev, "invalid keypad row hold time supplied\n"); + return -EINVAL; + } + + if (!pdata->debounce_ms || + ((pdata->debounce_ms % 5) != 0) || + pdata->debounce_ms > MAX_DEBOUNCE_TIME || + pdata->debounce_ms < MIN_DEBOUNCE_TIME) { + dev_err(&pdev->dev, "invalid debounce time supplied\n"); + return -EINVAL; + } + + keymap_data = pdata->keymap_data; + if (!keymap_data) { + dev_err(&pdev->dev, "no keymap data supplied\n"); + return -EINVAL; + } + + kp = kzalloc(sizeof(*kp), GFP_KERNEL); + if (!kp) + return -ENOMEM; + + platform_set_drvdata(pdev, kp); + + kp->pdata = pdata; + kp->dev = &pdev->dev; + + kp->input = input_allocate_device(); + if (!kp->input) { + dev_err(&pdev->dev, "unable to allocate input device\n"); + rc = -ENOMEM; + goto err_alloc_device; + } + + kp->key_sense_irq = platform_get_irq(pdev, 0); + if (kp->key_sense_irq < 0) { + dev_err(&pdev->dev, "unable to get keypad sense irq\n"); + rc = -ENXIO; + goto err_get_irq; + } + + kp->key_stuck_irq = platform_get_irq(pdev, 1); + if (kp->key_stuck_irq < 0) { + dev_err(&pdev->dev, "unable to get keypad stuck irq\n"); + rc = -ENXIO; + goto err_get_irq; + } + + kp->input->name = pdata->input_name ? : "PMIC8XXX keypad"; + kp->input->phys = pdata->input_phys_device ? : "pmic8xxx_keypad/input0"; + + kp->input->dev.parent = &pdev->dev; + + kp->input->id.bustype = BUS_I2C; + kp->input->id.version = 0x0001; + kp->input->id.product = 0x0001; + kp->input->id.vendor = 0x0001; + + kp->input->evbit[0] = BIT_MASK(EV_KEY); + + if (pdata->rep) + __set_bit(EV_REP, kp->input->evbit); + + kp->input->keycode = kp->keycodes; + kp->input->keycodemax = PM8XXX_MATRIX_MAX_SIZE; + kp->input->keycodesize = sizeof(kp->keycodes); + kp->input->open = pmic8xxx_kp_open; + kp->input->close = pmic8xxx_kp_close; + + matrix_keypad_build_keymap(keymap_data, PM8XXX_ROW_SHIFT, + kp->input->keycode, kp->input->keybit); + + input_set_capability(kp->input, EV_MSC, MSC_SCAN); + input_set_drvdata(kp->input, kp); + + /* initialize keypad state */ + memset(kp->keystate, 0xff, sizeof(kp->keystate)); + memset(kp->stuckstate, 0xff, sizeof(kp->stuckstate)); + + rc = pmic8xxx_kpd_init(kp); + if (rc < 0) { + dev_err(&pdev->dev, "unable to initialize keypad controller\n"); + goto err_get_irq; + } + + rc = pmic8xxx_kp_config_gpio(pdata->cols_gpio_start, + pdata->num_cols, kp, &kypd_sns); + if (rc < 0) { + dev_err(&pdev->dev, "unable to configure keypad sense lines\n"); + goto err_gpio_config; + } + + rc = pmic8xxx_kp_config_gpio(pdata->rows_gpio_start, + pdata->num_rows, kp, &kypd_drv); + if (rc < 0) { + dev_err(&pdev->dev, "unable to configure keypad drive lines\n"); + goto err_gpio_config; + } + + rc = request_any_context_irq(kp->key_sense_irq, pmic8xxx_kp_irq, + IRQF_TRIGGER_RISING, "pmic-keypad", kp); + if (rc < 0) { + dev_err(&pdev->dev, "failed to request keypad sense irq\n"); + goto err_get_irq; + } + + rc = request_any_context_irq(kp->key_stuck_irq, pmic8xxx_kp_stuck_irq, + IRQF_TRIGGER_RISING, "pmic-keypad-stuck", kp); + if (rc < 0) { + dev_err(&pdev->dev, "failed to request keypad stuck irq\n"); + goto err_req_stuck_irq; + } + + rc = pmic8xxx_kp_read_u8(kp, &ctrl_val, KEYP_CTRL); + if (rc < 0) { + dev_err(&pdev->dev, "failed to read KEYP_CTRL register\n"); + goto err_pmic_reg_read; + } + + kp->ctrl_reg = ctrl_val; + + rc = input_register_device(kp->input); + if (rc < 0) { + dev_err(&pdev->dev, "unable to register keypad input device\n"); + goto err_pmic_reg_read; + } + + device_init_wakeup(&pdev->dev, pdata->wakeup); + + return 0; + +err_pmic_reg_read: + free_irq(kp->key_stuck_irq, NULL); +err_req_stuck_irq: + free_irq(kp->key_sense_irq, NULL); +err_gpio_config: +err_get_irq: + input_free_device(kp->input); +err_alloc_device: + platform_set_drvdata(pdev, NULL); + kfree(kp); + return rc; +} + +static int __devexit pmic8xxx_kp_remove(struct platform_device *pdev) +{ + struct pmic8xxx_kp *kp = platform_get_drvdata(pdev); + + device_init_wakeup(&pdev->dev, 0); + free_irq(kp->key_stuck_irq, NULL); + free_irq(kp->key_sense_irq, NULL); + input_unregister_device(kp->input); + kfree(kp); + + platform_set_drvdata(pdev, NULL); + return 0; +} + +#ifdef CONFIG_PM_SLEEP +static int pmic8xxx_kp_suspend(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct pmic8xxx_kp *kp = platform_get_drvdata(pdev); + struct input_dev *input_dev = kp->input; + + if (device_may_wakeup(dev)) { + enable_irq_wake(kp->key_sense_irq); + } else { + mutex_lock(&input_dev->mutex); + + if (input_dev->users) + pmic8xxx_kp_disable(kp); + + mutex_unlock(&input_dev->mutex); + } + + return 0; +} + +static int pmic8xxx_kp_resume(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct pmic8xxx_kp *kp = platform_get_drvdata(pdev); + struct input_dev *input_dev = kp->input; + + if (device_may_wakeup(dev)) { + disable_irq_wake(kp->key_sense_irq); + } else { + mutex_lock(&input_dev->mutex); + + if (input_dev->users) + pmic8xxx_kp_enable(kp); + + mutex_unlock(&input_dev->mutex); + } + + return 0; +} +#endif + +static SIMPLE_DEV_PM_OPS(pm8xxx_kp_pm_ops, + pmic8xxx_kp_suspend, pmic8xxx_kp_resume); + +static struct platform_driver pmic8xxx_kp_driver = { + .probe = pmic8xxx_kp_probe, + .remove = __devexit_p(pmic8xxx_kp_remove), + .driver = { + .name = PM8XXX_KEYPAD_DEV_NAME, + .owner = THIS_MODULE, + .pm = &pm8xxx_kp_pm_ops, + }, +}; + +static int __init pmic8xxx_kp_init(void) +{ + return platform_driver_register(&pmic8xxx_kp_driver); +} +module_init(pmic8xxx_kp_init); + +static void __exit pmic8xxx_kp_exit(void) +{ + platform_driver_unregister(&pmic8xxx_kp_driver); +} +module_exit(pmic8xxx_kp_exit); + +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("PMIC8XXX keypad driver"); +MODULE_VERSION("1.0"); +MODULE_ALIAS("platform:pmic8xxx_keypad"); +MODULE_AUTHOR("Trilok Soni "); diff --git a/include/linux/input/pmic8xxx-keypad.h b/include/linux/input/pmic8xxx-keypad.h new file mode 100644 index 000000000000..5f1e2f9ad959 --- /dev/null +++ b/include/linux/input/pmic8xxx-keypad.h @@ -0,0 +1,52 @@ +/* Copyright (c) 2011, Code Aurora Forum. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __PMIC8XXX_KEYPAD_H__ +#define __PMIC8XXX_KEYPAD_H__ + +#include + +#define PM8XXX_KEYPAD_DEV_NAME "pm8xxx-keypad" + +/** + * struct pm8xxx_keypad_platform_data - platform data for keypad + * @keymap_data - matrix keymap data + * @input_name - input device name + * @input_phys_device - input device name + * @num_cols - number of columns of keypad + * @num_rows - number of row of keypad + * @debounce_ms - debounce period in milliseconds + * @scan_delay_ms - scan delay in milliseconds + * @row_hold_ns - row hold period in nanoseconds + * @wakeup - configure keypad as wakeup + * @rep - enable or disable key repeat bit + */ +struct pm8xxx_keypad_platform_data { + const struct matrix_keymap_data *keymap_data; + + const char *input_name; + const char *input_phys_device; + + unsigned int num_cols; + unsigned int num_rows; + unsigned int rows_gpio_start; + unsigned int cols_gpio_start; + + unsigned int debounce_ms; + unsigned int scan_delay_ms; + unsigned int row_hold_ns; + + bool wakeup; + bool rep; +}; + +#endif /*__PMIC8XXX_KEYPAD_H__ */ -- cgit v1.2.3-71-gd317 From 92d57a73e41047bff7d0812e06f893567876d455 Mon Sep 17 00:00:00 2001 From: Trilok Soni Date: Fri, 13 May 2011 15:17:51 +0530 Subject: input: Add support for Qualcomm PMIC8XXX power key Add support for PMIC8XXX power key driven over dedicated KYPD_PWR_N pin. Acked-by: Dmitry Torokhov Signed-off-by: Trilok Soni Signed-off-by: Anirudh Ghayal Signed-off-by: Samuel Ortiz --- drivers/input/misc/Kconfig | 11 ++ drivers/input/misc/Makefile | 1 + drivers/input/misc/pmic8xxx-pwrkey.c | 231 ++++++++++++++++++++++++++++++++++ include/linux/input/pmic8xxx-pwrkey.h | 31 +++++ 4 files changed, 274 insertions(+) create mode 100644 drivers/input/misc/pmic8xxx-pwrkey.c create mode 100644 include/linux/input/pmic8xxx-pwrkey.h (limited to 'include/linux/input') diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig index f9cf0881b0e3..45dc6aa62ba4 100644 --- a/drivers/input/misc/Kconfig +++ b/drivers/input/misc/Kconfig @@ -330,6 +330,17 @@ config INPUT_PWM_BEEPER To compile this driver as a module, choose M here: the module will be called pwm-beeper. +config INPUT_PMIC8XXX_PWRKEY + tristate "PMIC8XXX power key support" + depends on MFD_PM8XXX + help + Say Y here if you want support for the PMIC8XXX power key. + + If unsure, say N. + + To compile this driver as a module, choose M here: the + module will be called pmic8xxx-pwrkey. + config INPUT_GPIO_ROTARY_ENCODER tristate "Rotary encoders connected to GPIO pins" depends on GPIOLIB && GENERIC_GPIO diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile index e3f7984e6274..38efb2cb182b 100644 --- a/drivers/input/misc/Makefile +++ b/drivers/input/misc/Makefile @@ -33,6 +33,7 @@ obj-$(CONFIG_INPUT_PCF8574) += pcf8574_keypad.o obj-$(CONFIG_INPUT_PCSPKR) += pcspkr.o obj-$(CONFIG_INPUT_POWERMATE) += powermate.o obj-$(CONFIG_INPUT_PWM_BEEPER) += pwm-beeper.o +obj-$(CONFIG_INPUT_PMIC8XXX_PWRKEY) += pmic8xxx-pwrkey.o obj-$(CONFIG_INPUT_RB532_BUTTON) += rb532_button.o obj-$(CONFIG_INPUT_GPIO_ROTARY_ENCODER) += rotary_encoder.o obj-$(CONFIG_INPUT_SGI_BTNS) += sgi_btns.o diff --git a/drivers/input/misc/pmic8xxx-pwrkey.c b/drivers/input/misc/pmic8xxx-pwrkey.c new file mode 100644 index 000000000000..97e07e786e41 --- /dev/null +++ b/drivers/input/misc/pmic8xxx-pwrkey.c @@ -0,0 +1,231 @@ +/* Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#define PON_CNTL_1 0x1C +#define PON_CNTL_PULL_UP BIT(7) +#define PON_CNTL_TRIG_DELAY_MASK (0x7) + +/** + * struct pmic8xxx_pwrkey - pmic8xxx pwrkey information + * @key_press_irq: key press irq number + */ +struct pmic8xxx_pwrkey { + struct input_dev *pwr; + int key_press_irq; +}; + +static irqreturn_t pwrkey_press_irq(int irq, void *_pwrkey) +{ + struct pmic8xxx_pwrkey *pwrkey = _pwrkey; + + input_report_key(pwrkey->pwr, KEY_POWER, 1); + input_sync(pwrkey->pwr); + + return IRQ_HANDLED; +} + +static irqreturn_t pwrkey_release_irq(int irq, void *_pwrkey) +{ + struct pmic8xxx_pwrkey *pwrkey = _pwrkey; + + input_report_key(pwrkey->pwr, KEY_POWER, 0); + input_sync(pwrkey->pwr); + + return IRQ_HANDLED; +} + +#ifdef CONFIG_PM_SLEEP +static int pmic8xxx_pwrkey_suspend(struct device *dev) +{ + struct pmic8xxx_pwrkey *pwrkey = dev_get_drvdata(dev); + + if (device_may_wakeup(dev)) + enable_irq_wake(pwrkey->key_press_irq); + + return 0; +} + +static int pmic8xxx_pwrkey_resume(struct device *dev) +{ + struct pmic8xxx_pwrkey *pwrkey = dev_get_drvdata(dev); + + if (device_may_wakeup(dev)) + disable_irq_wake(pwrkey->key_press_irq); + + return 0; +} +#endif + +static SIMPLE_DEV_PM_OPS(pm8xxx_pwr_key_pm_ops, + pmic8xxx_pwrkey_suspend, pmic8xxx_pwrkey_resume); + +static int __devinit pmic8xxx_pwrkey_probe(struct platform_device *pdev) +{ + struct input_dev *pwr; + int key_release_irq = platform_get_irq(pdev, 0); + int key_press_irq = platform_get_irq(pdev, 1); + int err; + unsigned int delay; + u8 pon_cntl; + struct pmic8xxx_pwrkey *pwrkey; + const struct pm8xxx_pwrkey_platform_data *pdata = mfd_get_data(pdev); + + if (!pdata) { + dev_err(&pdev->dev, "power key platform data not supplied\n"); + return -EINVAL; + } + + if (pdata->kpd_trigger_delay_us > 62500) { + dev_err(&pdev->dev, "invalid power key trigger delay\n"); + return -EINVAL; + } + + pwrkey = kzalloc(sizeof(*pwrkey), GFP_KERNEL); + if (!pwrkey) + return -ENOMEM; + + pwr = input_allocate_device(); + if (!pwr) { + dev_dbg(&pdev->dev, "Can't allocate power button\n"); + err = -ENOMEM; + goto free_pwrkey; + } + + input_set_capability(pwr, EV_KEY, KEY_POWER); + + pwr->name = "pmic8xxx_pwrkey"; + pwr->phys = "pmic8xxx_pwrkey/input0"; + pwr->dev.parent = &pdev->dev; + + delay = (pdata->kpd_trigger_delay_us << 10) / USEC_PER_SEC; + delay = 1 + ilog2(delay); + + err = pm8xxx_readb(pdev->dev.parent, PON_CNTL_1, &pon_cntl); + if (err < 0) { + dev_err(&pdev->dev, "failed reading PON_CNTL_1 err=%d\n", err); + goto free_input_dev; + } + + pon_cntl &= ~PON_CNTL_TRIG_DELAY_MASK; + pon_cntl |= (delay & PON_CNTL_TRIG_DELAY_MASK); + if (pdata->pull_up) + pon_cntl |= PON_CNTL_PULL_UP; + else + pon_cntl &= ~PON_CNTL_PULL_UP; + + err = pm8xxx_writeb(pdev->dev.parent, PON_CNTL_1, pon_cntl); + if (err < 0) { + dev_err(&pdev->dev, "failed writing PON_CNTL_1 err=%d\n", err); + goto free_input_dev; + } + + err = input_register_device(pwr); + if (err) { + dev_dbg(&pdev->dev, "Can't register power key: %d\n", err); + goto free_input_dev; + } + + pwrkey->key_press_irq = key_press_irq; + pwrkey->pwr = pwr; + + platform_set_drvdata(pdev, pwrkey); + + err = request_irq(key_press_irq, pwrkey_press_irq, + IRQF_TRIGGER_RISING, "pmic8xxx_pwrkey_press", pwrkey); + if (err < 0) { + dev_dbg(&pdev->dev, "Can't get %d IRQ for pwrkey: %d\n", + key_press_irq, err); + goto unreg_input_dev; + } + + err = request_irq(key_release_irq, pwrkey_release_irq, + IRQF_TRIGGER_RISING, "pmic8xxx_pwrkey_release", pwrkey); + if (err < 0) { + dev_dbg(&pdev->dev, "Can't get %d IRQ for pwrkey: %d\n", + key_release_irq, err); + + goto free_press_irq; + } + + device_init_wakeup(&pdev->dev, pdata->wakeup); + + return 0; + +free_press_irq: + free_irq(key_press_irq, NULL); +unreg_input_dev: + platform_set_drvdata(pdev, NULL); + input_unregister_device(pwr); + pwr = NULL; +free_input_dev: + input_free_device(pwr); +free_pwrkey: + kfree(pwrkey); + return err; +} + +static int __devexit pmic8xxx_pwrkey_remove(struct platform_device *pdev) +{ + struct pmic8xxx_pwrkey *pwrkey = platform_get_drvdata(pdev); + int key_release_irq = platform_get_irq(pdev, 0); + int key_press_irq = platform_get_irq(pdev, 1); + + device_init_wakeup(&pdev->dev, 0); + + free_irq(key_press_irq, pwrkey); + free_irq(key_release_irq, pwrkey); + input_unregister_device(pwrkey->pwr); + platform_set_drvdata(pdev, NULL); + kfree(pwrkey); + + return 0; +} + +static struct platform_driver pmic8xxx_pwrkey_driver = { + .probe = pmic8xxx_pwrkey_probe, + .remove = __devexit_p(pmic8xxx_pwrkey_remove), + .driver = { + .name = PM8XXX_PWRKEY_DEV_NAME, + .owner = THIS_MODULE, + .pm = &pm8xxx_pwr_key_pm_ops, + }, +}; + +static int __init pmic8xxx_pwrkey_init(void) +{ + return platform_driver_register(&pmic8xxx_pwrkey_driver); +} +module_init(pmic8xxx_pwrkey_init); + +static void __exit pmic8xxx_pwrkey_exit(void) +{ + platform_driver_unregister(&pmic8xxx_pwrkey_driver); +} +module_exit(pmic8xxx_pwrkey_exit); + +MODULE_ALIAS("platform:pmic8xxx_pwrkey"); +MODULE_DESCRIPTION("PMIC8XXX Power Key driver"); +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Trilok Soni "); diff --git a/include/linux/input/pmic8xxx-pwrkey.h b/include/linux/input/pmic8xxx-pwrkey.h new file mode 100644 index 000000000000..6d2974e57109 --- /dev/null +++ b/include/linux/input/pmic8xxx-pwrkey.h @@ -0,0 +1,31 @@ +/* Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __PMIC8XXX_PWRKEY_H__ +#define __PMIC8XXX_PWRKEY_H__ + +#define PM8XXX_PWRKEY_DEV_NAME "pm8xxx-pwrkey" + +/** + * struct pm8xxx_pwrkey_platform_data - platform data for pwrkey driver + * @pull up: power on register control for pull up/down configuration + * @kpd_trigger_delay_us: time delay for power key state change interrupt + * trigger. + * @wakeup: configure power key as wakeup source + */ +struct pm8xxx_pwrkey_platform_data { + bool pull_up; + u32 kpd_trigger_delay_us; + u32 wakeup; +}; + +#endif /* __PMIC8XXX_PWRKEY_H__ */ -- cgit v1.2.3-71-gd317