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 <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Michael Hennerich 2011-05-19 00:59:32 -07:00 committed by Dmitry Torokhov
parent 891e376b1e
commit 9d2e173644
4 changed files with 995 additions and 0 deletions

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@ -32,6 +32,16 @@ config KEYBOARD_ADP5588
To compile this driver as a module, choose M here: the To compile this driver as a module, choose M here: the
module will be called adp5588-keys. 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 config KEYBOARD_AMIGA
tristate "Amiga keyboard" tristate "Amiga keyboard"
depends on AMIGA depends on AMIGA

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@ -6,6 +6,7 @@
obj-$(CONFIG_KEYBOARD_ADP5520) += adp5520-keys.o obj-$(CONFIG_KEYBOARD_ADP5520) += adp5520-keys.o
obj-$(CONFIG_KEYBOARD_ADP5588) += adp5588-keys.o obj-$(CONFIG_KEYBOARD_ADP5588) += adp5588-keys.o
obj-$(CONFIG_KEYBOARD_ADP5589) += adp5589-keys.o
obj-$(CONFIG_KEYBOARD_AMIGA) += amikbd.o obj-$(CONFIG_KEYBOARD_AMIGA) += amikbd.o
obj-$(CONFIG_KEYBOARD_ATARI) += atakbd.o obj-$(CONFIG_KEYBOARD_ATARI) += atakbd.o
obj-$(CONFIG_KEYBOARD_ATKBD) += atkbd.o obj-$(CONFIG_KEYBOARD_ATKBD) += atkbd.o

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@ -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 <linux/module.h>
#include <linux/version.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/workqueue.h>
#include <linux/errno.h>
#include <linux/pm.h>
#include <linux/platform_device.h>
#include <linux/input.h>
#include <linux/i2c.h>
#include <linux/gpio.h>
#include <linux/slab.h>
#include <linux/input/adp5589.h>
/* 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 <hennerich@blackfin.uclinux.org>");
MODULE_DESCRIPTION("ADP5589 Keypad driver");

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@ -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