Added: trunk/drivers/input/keyboard/adp5585-keys.c (0 => 9174)
--- trunk/drivers/input/keyboard/adp5585-keys.c (rev 0)
+++ trunk/drivers/input/keyboard/adp5585-keys.c 2010-09-28 11:57:07 UTC (rev 9174)
@@ -0,0 +1,842 @@
+/*
+ * File: drivers/input/keyboard/adp5585_keys.c
+ * Description: keypad driver for ADP5585
+ * I2C QWERTY Keypad and IO Expander
+ * Bugs: Enter bugs at http://blackfin.uclinux.org/
+ *
+ * Copyright (C) 2010 Analog Devices Inc.
+ * Licensed under the GPL-2 or later.
+ */
+
+#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/adp5585.h>
+
+#define ADP5585_ID 0x00
+#define ADP5585_INT_STATUS 0x01
+#define ADP5585_STATUS 0x02
+#define ADP5585_FIFO_1 0x03
+#define ADP5585_FIFO_2 0x04
+#define ADP5585_FIFO_3 0x05
+#define ADP5585_FIFO_4 0x06
+#define ADP5585_FIFO_5 0x07
+#define ADP5585_FIFO_6 0x08
+#define ADP5585_FIFO_7 0x09
+#define ADP5585_FIFO_8 0x0A
+#define ADP5585_FIFO_9 0x0B
+#define ADP5585_FIFO_10 0x0C
+#define ADP5585_FIFO_11 0x0D
+#define ADP5585_FIFO_12 0x0E
+#define ADP5585_FIFO_13 0x0F
+#define ADP5585_FIFO_14 0x10
+#define ADP5585_FIFO_15 0x11
+#define ADP5585_FIFO_16 0x12
+#define ADP5585_GPI_INT_STAT_A 0x13
+#define ADP5585_GPI_INT_STAT_B 0x14
+#define ADP5585_GPI_STATUS_A 0x15
+#define ADP5585_GPI_STATUS_B 0x16
+#define ADP5585_RPULL_CONFIG_A 0x17
+#define ADP5585_RPULL_CONFIG_B 0x18
+#define ADP5585_RPULL_CONFIG_C 0x19
+#define ADP5585_RPULL_CONFIG_D 0x1A
+#define ADP5585_GPI_INT_LEVEL_A 0x1B
+#define ADP5585_GPI_INT_LEVEL_B 0x1C
+#define ADP5585_GPI_EVENT_EN_A 0x1D
+#define ADP5585_GPI_EVENT_EN_B 0x1E
+#define ADP5585_GPI_INTERRUPT_EN_A 0x1F
+#define ADP5585_GPI_INTERRUPT_EN_B 0x20
+#define ADP5585_DEBOUNCE_DIS_A 0x21
+#define ADP5585_DEBOUNCE_DIS_B 0x22
+#define ADP5585_GPO_DATA_OUT_A 0x23
+#define ADP5585_GPO_DATA_OUT_B 0x24
+#define ADP5585_GPO_OUT_MODE_A 0x25
+#define ADP5585_GPO_OUT_MODE_B 0x26
+#define ADP5585_GPIO_DIRECTION_A 0x27
+#define ADP5585_GPIO_DIRECTION_B 0x28
+#define ADP5585_RESET1_EVENT_A 0x29
+#define ADP5585_RESET1_EVENT_B 0x2A
+#define ADP5585_RESET1_EVENT_C 0x2B
+#define ADP5585_RESET2_EVENT_A 0x2C
+#define ADP5585_RESET2_EVENT_B 0x2D
+#define ADP5585_RESET_CFG 0x2E
+#define ADP5585_PWM_OFFT_LOW 0x2F
+#define ADP5585_PWM_OFFT_HIGH 0x30
+#define ADP5585_PWM_ONT_LOW 0x31
+#define ADP5585_PWM_ONT_HIGH 0x32
+#define ADP5585_PWM_CFG 0x33
+#define ADP5585_LOGIC_CFG 0x34
+#define ADP5585_LOGIC_FF_CFG 0x35
+#define ADP5585_LOGIC_INT_EVENT_EN 0x36
+#define ADP5585_POLL_PTIME_CFG 0x37
+#define ADP5585_PIN_CONFIG_A 0x38
+#define ADP5585_PIN_CONFIG_B 0x39
+#define ADP5585_PIN_CONFIG_D 0x3A
+#define ADP5585_GENERAL_CFG 0x3B
+#define ADP5585_INT_EN 0x3C
+
+/* ID Register */
+#define ADP5585_DEVICE_ID_MASK 0xF
+#define ADP5585_MAN_ID_MASK 0xF
+#define ADP5585_MAN_ID_SHIFT 4
+#define ADP5585_MAN_ID 0x02
+
+/* GENERAL_CFG Register */
+#define OSC_EN (1 << 7)
+#define CORE_CLK(x) (((x) & 0x3) << 5)
+#define INT_CFG (1 << 1)
+#define RST_CFG (1 << 0)
+
+/* INT_EN Register */
+#define LOGIC_IEN (1 << 4)
+#define OVRFLOW_IEN (1 << 2)
+#define GPI_IEN (1 << 1)
+#define EVENT_IEN (1 << 0)
+
+/* Interrupt Status Register */
+#define LOGIC_INT (1 << 4)
+#define OVRFLOW_INT (1 << 2)
+#define GPI_INT (1 << 1)
+#define EVENT_INT (1 << 0)
+
+/* STATUS Register */
+#define LOGIC_STAT (1 << 6)
+#define KEC 0xF
+
+/* PIN_CONFIG_D Register */
+#define C4_EXTEND_CFG (1 << 6) /* RESET2 */
+#define R4_EXTEND_CFG (1 << 5) /* RESET1 */
+
+#define PTIME_MASK 0x3
+
+/* Key Event Register xy */
+#define KEY_EV_PRESSED (1 << 7)
+#define KEY_EV_MASK 0x7F
+
+#define KEYP_MAX_EVENT 16
+
+#define MAXGPIO 11 /* 10 on the ADP5585-01, 11 on ADP5585-02 */
+#define ADP_BANK(offs) ((offs) > ADP_MAX_ROW_NUM)
+#define ADP_BIT(offs) (offs > ADP_MAX_ROW_NUM ? \
+ 1u << (offs - ADP_COL_SHIFT) : 1u << (offs))
+enum {
+ ADP5585_01,
+ ADP5585_02
+};
+
+struct adp5585_kpad {
+ struct i2c_client *client;
+ struct input_dev *input;
+ unsigned short keycode[ADP5585_KEYMAPSIZE];
+ const struct adp5585_gpi_map *gpimap;
+ unsigned short gpimapsize;
+ unsigned extend_cfg;
+ bool support_row5;
+#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[2];
+ u8 dir[2];
+#endif
+};
+
+static int adp5585_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 adp5585_write(struct i2c_client *client, u8 reg, u8 val)
+{
+ return i2c_smbus_write_byte_data(client, reg, val);
+}
+
+#ifdef CONFIG_GPIOLIB
+static int adp5585_gpio_get_value(struct gpio_chip *chip, unsigned off)
+{
+ struct adp5585_kpad *kpad = container_of(chip, struct adp5585_kpad, gc);
+ unsigned int bank = ADP_BANK(kpad->gpiomap[off]);
+ unsigned int bit = ADP_BIT(kpad->gpiomap[off]);
+
+ return !!(adp5585_read(kpad->client, ADP5585_GPI_STATUS_A + bank) &
+ bit);
+}
+
+static void adp5585_gpio_set_value(struct gpio_chip *chip,
+ unsigned off, int val)
+{
+ struct adp5585_kpad *kpad = container_of(chip, struct adp5585_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;
+
+ adp5585_write(kpad->client, ADP5585_GPO_DATA_OUT_A + bank,
+ kpad->dat_out[bank]);
+
+ mutex_unlock(&kpad->gpio_lock);
+}
+
+static int adp5585_gpio_direction_input(struct gpio_chip *chip, unsigned off)
+{
+ struct adp5585_kpad *kpad = container_of(chip, struct adp5585_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 =
+ adp5585_write(kpad->client, ADP5585_GPIO_DIRECTION_A + bank,
+ kpad->dir[bank]);
+
+ mutex_unlock(&kpad->gpio_lock);
+
+ return ret;
+}
+
+static int adp5585_gpio_direction_output(struct gpio_chip *chip,
+ unsigned off, int val)
+{
+ struct adp5585_kpad *kpad = container_of(chip, struct adp5585_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 = adp5585_write(kpad->client, ADP5585_GPO_DATA_OUT_A + bank,
+ kpad->dat_out[bank]);
+ ret |= adp5585_write(kpad->client, ADP5585_GPIO_DIRECTION_A + bank,
+ kpad->dir[bank]);
+
+ mutex_unlock(&kpad->gpio_lock);
+
+ return ret;
+}
+
+static int __devinit adp5585_build_gpiomap(struct adp5585_kpad *kpad,
+ const struct adp5585_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 - ADP5585_GPI_PIN_BASE] = true;
+
+ if (kpad->extend_cfg & R4_EXTEND_CFG)
+ pin_used[4] = true;
+
+ if (kpad->extend_cfg & C4_EXTEND_CFG)
+ pin_used[10] = true;
+
+ if (!kpad->support_row5)
+ pin_used[5] = true;
+
+ for (i = 0; i < MAXGPIO; i++)
+ if (!pin_used[i])
+ kpad->gpiomap[n_unused++] = i;
+
+ return n_unused;
+}
+
+static int __devinit adp5585_gpio_add(struct adp5585_kpad *kpad)
+{
+ struct device *dev = &kpad->client->dev;
+ const struct adp5585_kpad_platform_data *pdata = dev->platform_data;
+ const struct adp5585_gpio_platform_data *gpio_data = pdata->gpio_data;
+ int i, error;
+
+ if (!gpio_data)
+ return 0;
+
+ kpad->gc.ngpio = adp5585_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 = adp5585_gpio_direction_input;
+ kpad->gc.direction_output = adp5585_gpio_direction_output;
+ kpad->gc.get = adp5585_gpio_get_value;
+ kpad->gc.set = adp5585_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] = adp5585_read(kpad->client,
+ ADP5585_GPO_DATA_OUT_A + i);
+ kpad->dir[i] =
+ adp5585_read(kpad->client, ADP5585_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 adp5585_gpio_remove(struct adp5585_kpad *kpad)
+{
+ struct device *dev = &kpad->client->dev;
+ const struct adp5585_kpad_platform_data *pdata = dev->platform_data;
+ const struct adp5585_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 adp5585_gpio_add(struct adp5585_kpad *kpad)
+{
+ return 0;
+}
+
+static inline void adp5585_gpio_remove(struct adp5585_kpad *kpad)
+{
+}
+#endif
+
+static void adp5585_report_events(struct adp5585_kpad *kpad, int ev_cnt)
+{
+ int i, j;
+
+ for (i = 0; i < ev_cnt; i++) {
+ int key = adp5585_read(kpad->client, ADP5585_FIFO_1 + i);
+ int key_val = key & KEY_EV_MASK;
+
+ if (key_val >= ADP5585_GPI_PIN_BASE
+ && key_val <= ADP5585_GPI_PIN_END) {
+ for (j = 0; j < kpad->gpimapsize; j++) {
+ if (key_val == kpad->gpimap[j].pin) {
+ input_report_switch(kpad->input,
+ kpad->gpimap[j].
+ sw_evt,
+ key &
+ KEY_EV_PRESSED);
+ break;
+ }
+ }
+ } else {
+ input_report_key(kpad->input,
+ kpad->keycode[key_val - 1],
+ key & KEY_EV_PRESSED);
+ }
+ }
+}
+
+static irqreturn_t adp5585_irq(int irq, void *handle)
+{
+ struct adp5585_kpad *kpad = handle;
+ struct i2c_client *client = kpad->client;
+ int status, ev_cnt;
+
+ status = adp5585_read(client, ADP5585_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 = adp5585_read(client, ADP5585_STATUS) & KEC;
+ if (ev_cnt) {
+ adp5585_report_events(kpad, ev_cnt);
+ input_sync(kpad->input);
+ }
+ }
+ adp5585_write(client, ADP5585_INT_STATUS, status); /* Status is W1C */
+
+ return IRQ_HANDLED;
+}
+
+static int __devinit adp5585_get_evcode(struct adp5585_kpad *kpad,
+ unsigned short key)
+{
+ int i;
+ for (i = 0; i < ADP5585_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 adp5585_setup(struct adp5585_kpad *kpad)
+{
+ struct i2c_client *client = kpad->client;
+ const struct adp5585_kpad_platform_data *pdata =
+ client->dev.platform_data;
+ int i, ret;
+ unsigned char evt_mode1 = 0, evt_mode2 = 0;
+ unsigned char pull_mask = 0;
+
+ ret = adp5585_write(client, ADP5585_PIN_CONFIG_A,
+ pdata->keypad_en_mask & ADP_ROW_MASK);
+ ret |= adp5585_write(client, ADP5585_PIN_CONFIG_B,
+ (pdata->keypad_en_mask >> ADP_COL_SHIFT) &
+ ADP_COL_MASK);
+
+ for (i = 0; i < KEYP_MAX_EVENT; i++)
+ ret |= adp5585_read(client, ADP5585_FIFO_1 + i);
+
+ for (i = 0; i < pdata->gpimapsize; i++) {
+ unsigned short pin = pdata->gpimap[i].pin;
+
+ if (pin <= ADP5585_GPI_PIN_ROW_END)
+ evt_mode1 |= (1 << (pin - ADP5585_GPI_PIN_ROW_BASE));
+ else
+ evt_mode2 |= (1 << (pin - ADP5585_GPI_PIN_COL_BASE));
+ }
+
+ if (pdata->gpimapsize) {
+ ret |= adp5585_write(client, ADP5585_GPI_EVENT_EN_A, evt_mode1);
+ ret |= adp5585_write(client, ADP5585_GPI_EVENT_EN_B, evt_mode2);
+ }
+
+ 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 <= ADP_MAX_ROW_NUM; 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 == 3 || i == ADP_MAX_ROW_NUM) {
+ ret |= adp5585_write(client,
+ ADP5585_RPULL_CONFIG_A + (i >> 2),
+ pull_mask);
+ pull_mask = 0;
+ }
+ }
+
+ for (i = 0; i <= ADP_MAX_COL_NUM; i++) {
+ unsigned val = 0;
+ if (pdata->pullup_en_300k & (1 << (i + ADP_COL_SHIFT)))
+ val = 0;
+ else if (pdata->pulldown_en_300k & (1 << (i + ADP_COL_SHIFT)))
+ val = 1;
+ else if (pdata->pullup_en_100k & (1 << (i + ADP_COL_SHIFT)))
+ val = 2;
+ else if (pdata->pull_dis_mask & (1 << (i + ADP_COL_SHIFT)))
+ val = 3;
+
+ pull_mask |= val << (2 * (i & 0x3));
+
+ if (i == 3 || i == ADP_MAX_COL_NUM) {
+ ret |= adp5585_write(client,
+ ADP5585_RPULL_CONFIG_C + (i >> 2),
+ pull_mask);
+ pull_mask = 0;
+ }
+ }
+
+ if (pdata->reset1_key_1 && pdata->reset1_key_2 &&
+ pdata->reset1_key_3) {
+ ret |= adp5585_write(client, ADP5585_RESET1_EVENT_A,
+ adp5585_get_evcode(kpad,
+ pdata->reset1_key_1));
+ ret |= adp5585_write(client, ADP5585_RESET1_EVENT_B,
+ adp5585_get_evcode(kpad,
+ pdata->reset1_key_2));
+ ret |= adp5585_write(client, ADP5585_RESET1_EVENT_C,
+ adp5585_get_evcode(kpad,
+ pdata->reset1_key_3));
+ kpad->extend_cfg |= R4_EXTEND_CFG;
+ }
+
+ if (pdata->reset2_key_1 && pdata->reset2_key_2) {
+ ret |= adp5585_write(client, ADP5585_RESET2_EVENT_A,
+ adp5585_get_evcode(kpad,
+ pdata->reset2_key_1));
+ ret |= adp5585_write(client, ADP5585_RESET2_EVENT_B,
+ adp5585_get_evcode(kpad,
+ pdata->reset2_key_2));
+ kpad->extend_cfg |= C4_EXTEND_CFG;
+ }
+
+ if (kpad->extend_cfg) {
+ ret |= adp5585_write(client, ADP5585_RESET_CFG,
+ pdata->reset_cfg);
+ ret |= adp5585_write(client, ADP5585_PIN_CONFIG_D,
+ kpad->extend_cfg);
+ }
+
+ ret |= adp5585_write(client, ADP5585_DEBOUNCE_DIS_A,
+ pdata->debounce_dis_mask & ADP_ROW_MASK);
+ ret |= adp5585_write(client, ADP5585_DEBOUNCE_DIS_B,
+ (pdata->debounce_dis_mask >> ADP_COL_SHIFT) &
+ ADP_COL_MASK);
+
+
+ ret |= adp5585_write(client, ADP5585_POLL_PTIME_CFG,
+ pdata->scan_cycle_time & PTIME_MASK);
+ ret |= adp5585_write(client, ADP5585_INT_STATUS, LOGIC_INT |
+ OVRFLOW_INT | GPI_INT | EVENT_INT); /* Status is W1C */
+
+ ret |= adp5585_write(client, ADP5585_GENERAL_CFG,
+ INT_CFG | OSC_EN | CORE_CLK(3));
+ ret |= adp5585_write(client, ADP5585_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 adp5585_report_switch_state(struct adp5585_kpad *kpad)
+{
+ int gpi_stat1 = adp5585_read(kpad->client, ADP5585_GPI_STATUS_A);
+ int gpi_stat2 = adp5585_read(kpad->client, ADP5585_GPI_STATUS_B);
+ int gpi_stat_tmp, pin_loc;
+ int i;
+
+ for (i = 0; i < kpad->gpimapsize; i++) {
+ unsigned short pin = kpad->gpimap[i].pin;
+
+ if (pin <= ADP5585_GPI_PIN_ROW_END) {
+ gpi_stat_tmp = gpi_stat1;
+ pin_loc = pin - ADP5585_GPI_PIN_ROW_BASE;
+ } else {
+ gpi_stat_tmp = gpi_stat2;
+ pin_loc = pin - ADP5585_GPI_PIN_COL_BASE;
+ }
+
+ 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 adp5585_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct adp5585_kpad *kpad;
+ const struct adp5585_kpad_platform_data *pdata =
+ client->dev.platform_data;
+ 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;
+ }
+
+ if (!pdata) {
+ dev_err(&client->dev, "no platform data?\n");
+ return -EINVAL;
+ }
+
+ if (!((pdata->keypad_en_mask & ADP_ROW_MASK) &&
+ (pdata->keypad_en_mask >> ADP_COL_SHIFT)) || !pdata->keymap) {
+ dev_err(&client->dev, "no rows, cols or keymap from pdata\n");
+ return -EINVAL;
+ }
+
+ if (pdata->keymapsize != ADP5585_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 > ADP5585_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 < ADP5585_GPI_PIN_BASE || pin > ADP5585_GPI_PIN_END) {
+ dev_err(&client->dev, "invalid gpi pin data\n");
+ return -EINVAL;
+ }
+
+ if ((1 << (pin - ADP5585_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 = adp5585_read(client, ADP5585_ID);
+ if (ret < 0) {
+ error = ret;
+ goto err_free_mem;
+ }
+
+ revid = (u8) ret & ADP5585_DEVICE_ID_MASK;
+
+ if (id->driver_data == ADP5585_02)
+ kpad->support_row5 = true;
+
+ input->name = client->name;
+ input->phys = "adp5585-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, adp5585_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 = adp5585_setup(kpad);
+ if (error)
+ goto err_free_irq;
+
+ if (kpad->gpimapsize)
+ adp5585_report_switch_state(kpad);
+
+ error = adp5585_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 adp5585_remove(struct i2c_client *client)
+{
+ struct adp5585_kpad *kpad = i2c_get_clientdata(client);
+
+ adp5585_write(client, ADP5585_GENERAL_CFG, 0);
+ free_irq(client->irq, kpad);
+ input_unregister_device(kpad->input);
+ adp5585_gpio_remove(kpad);
+ kfree(kpad);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int adp5585_suspend(struct device *dev)
+{
+ struct adp5585_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 adp5585_resume(struct device *dev)
+{
+ struct adp5585_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;
+}
+
+static const struct dev_pm_ops adp5585_dev_pm_ops = {
+ .suspend = adp5585_suspend,
+ .resume = adp5585_resume,
+};
+#endif
+
+static const struct i2c_device_id adp5585_id[] = {
+ {"adp5585-keys", ADP5585_01},
+ {"adp5585-02-keys", ADP5585_02}, /* Adds ROW5 to ADP5585 */
+ {}
+};
+
+MODULE_DEVICE_TABLE(i2c, adp5585_id);
+
+static struct i2c_driver adp5585_driver = {
+ .driver = {
+ .name = KBUILD_MODNAME,
+#ifdef CONFIG_PM
+ .pm = &adp5585_dev_pm_ops,
+#endif
+ },
+ .probe = adp5585_probe,
+ .remove = __devexit_p(adp5585_remove),
+ .id_table = adp5585_id,
+};
+
+static int __init adp5585_init(void)
+{
+ return i2c_add_driver(&adp5585_driver);
+}
+
+module_init(adp5585_init);
+
+static void __exit adp5585_exit(void)
+{
+ i2c_del_driver(&adp5585_driver);
+}
+
+module_exit(adp5585_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Michael Hennerich <[email protected]>");
+MODULE_DESCRIPTION("ADP5585 Keypad driver");
+MODULE_ALIAS("i2c:adp5585-keys");
