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linuxdebug/drivers/input/keyboard/adp5589-keys.c

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null pointer error
2024-07-16 15:50:57 +02:00
// SPDX-License-Identifier: GPL-2.0-only
/*
* Description: keypad driver for ADP5589, ADP5585
* I2C QWERTY Keypad and IO Expander
* Bugs: Enter bugs at http://blackfin.uclinux.org/
*
* Copyright (C) 2010-2011 Analog Devices Inc.
*/
#include <linux/bitops.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/workqueue.h>
#include <linux/errno.h>
#include <linux/pm.h>
#include <linux/pm_wakeirq.h>
#include <linux/platform_device.h>
#include <linux/input.h>
#include <linux/i2c.h>
#include <linux/gpio/driver.h>
#include <linux/slab.h>
#include <linux/input/adp5589.h>
/* ADP5589/ADP5585 Common Registers */
#define ADP5589_5_ID 0x00
#define ADP5589_5_INT_STATUS 0x01
#define ADP5589_5_STATUS 0x02
#define ADP5589_5_FIFO_1 0x03
#define ADP5589_5_FIFO_2 0x04
#define ADP5589_5_FIFO_3 0x05
#define ADP5589_5_FIFO_4 0x06
#define ADP5589_5_FIFO_5 0x07
#define ADP5589_5_FIFO_6 0x08
#define ADP5589_5_FIFO_7 0x09
#define ADP5589_5_FIFO_8 0x0A
#define ADP5589_5_FIFO_9 0x0B
#define ADP5589_5_FIFO_10 0x0C
#define ADP5589_5_FIFO_11 0x0D
#define ADP5589_5_FIFO_12 0x0E
#define ADP5589_5_FIFO_13 0x0F
#define ADP5589_5_FIFO_14 0x10
#define ADP5589_5_FIFO_15 0x11
#define ADP5589_5_FIFO_16 0x12
#define ADP5589_5_GPI_INT_STAT_A 0x13
#define ADP5589_5_GPI_INT_STAT_B 0x14
/* ADP5589 Registers */
#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
/* ADP5585 Registers */
#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 ADP5589_5_DEVICE_ID_MASK 0xF
#define ADP5589_5_MAN_ID_MASK 0xF
#define ADP5589_5_MAN_ID_SHIFT 4
#define ADP5589_5_MAN_ID 0x02
/* GENERAL_CFG Register */
#define OSC_EN BIT(7)
#define CORE_CLK(x) (((x) & 0x3) << 5)
#define LCK_TRK_LOGIC BIT(4) /* ADP5589 only */
#define LCK_TRK_GPI BIT(3) /* ADP5589 only */
#define INT_CFG BIT(1)
#define RST_CFG BIT(0)
/* INT_EN Register */
#define LOGIC2_IEN BIT(5) /* ADP5589 only */
#define LOGIC1_IEN BIT(4)
#define LOCK_IEN BIT(3) /* ADP5589 only */
#define OVRFLOW_IEN BIT(2)
#define GPI_IEN BIT(1)
#define EVENT_IEN BIT(0)
/* Interrupt Status Register */
#define LOGIC2_INT BIT(5) /* ADP5589 only */
#define LOGIC1_INT BIT(4)
#define LOCK_INT BIT(3) /* ADP5589 only */
#define OVRFLOW_INT BIT(2)
#define GPI_INT BIT(1)
#define EVENT_INT BIT(0)
/* STATUS Register */
#define LOGIC2_STAT BIT(7) /* ADP5589 only */
#define LOGIC1_STAT BIT(6)
#define LOCK_STAT BIT(5) /* ADP5589 only */
#define KEC 0x1F
/* PIN_CONFIG_D Register */
#define C4_EXTEND_CFG BIT(6) /* RESET2 */
#define R4_EXTEND_CFG BIT(5) /* RESET1 */
/* LOCK_CFG */
#define LOCK_EN BIT(0)
#define PTIME_MASK 0x3
#define LTIME_MASK 0x3 /* ADP5589 only */
/* Key Event Register xy */
#define KEY_EV_PRESSED BIT(7)
#define KEY_EV_MASK 0x7F
#define KEYP_MAX_EVENT 16
#define ADP5589_MAXGPIO 19
#define ADP5585_MAXGPIO 11 /* 10 on the ADP5585-01, 11 on ADP5585-02 */
enum {
ADP5589,
ADP5585_01,
ADP5585_02
};
struct adp_constants {
u8 maxgpio;
u8 keymapsize;
u8 gpi_pin_row_base;
u8 gpi_pin_row_end;
u8 gpi_pin_col_base;
u8 gpi_pin_base;
u8 gpi_pin_end;
u8 gpimapsize_max;
u8 max_row_num;
u8 max_col_num;
u8 row_mask;
u8 col_mask;
u8 col_shift;
u8 c4_extend_cfg;
u8 (*bank) (u8 offset);
u8 (*bit) (u8 offset);
u8 (*reg) (u8 reg);
};
struct adp5589_kpad {
struct i2c_client *client;
struct input_dev *input;
const struct adp_constants *var;
unsigned short keycode[ADP5589_KEYMAPSIZE];
const struct adp5589_gpi_map *gpimap;
unsigned short gpimapsize;
unsigned extend_cfg;
bool is_adp5585;
bool support_row5;
#ifdef CONFIG_GPIOLIB
unsigned char gpiomap[ADP5589_MAXGPIO];
struct gpio_chip gc;
struct mutex gpio_lock; /* Protect cached dir, dat_out */
u8 dat_out[3];
u8 dir[3];
#endif
};
/*
* ADP5589 / ADP5585 derivative / variant handling
*/
/* ADP5589 */
static unsigned char adp5589_bank(unsigned char offset)
{
return offset >> 3;
}
static unsigned char adp5589_bit(unsigned char offset)
{
return 1u << (offset & 0x7);
}
static unsigned char adp5589_reg(unsigned char reg)
{
return reg;
}
static const struct adp_constants const_adp5589 = {
.maxgpio = ADP5589_MAXGPIO,
.keymapsize = ADP5589_KEYMAPSIZE,
.gpi_pin_row_base = ADP5589_GPI_PIN_ROW_BASE,
.gpi_pin_row_end = ADP5589_GPI_PIN_ROW_END,
.gpi_pin_col_base = ADP5589_GPI_PIN_COL_BASE,
.gpi_pin_base = ADP5589_GPI_PIN_BASE,
.gpi_pin_end = ADP5589_GPI_PIN_END,
.gpimapsize_max = ADP5589_GPIMAPSIZE_MAX,
.c4_extend_cfg = 12,
.max_row_num = ADP5589_MAX_ROW_NUM,
.max_col_num = ADP5589_MAX_COL_NUM,
.row_mask = ADP5589_ROW_MASK,
.col_mask = ADP5589_COL_MASK,
.col_shift = ADP5589_COL_SHIFT,
.bank = adp5589_bank,
.bit = adp5589_bit,
.reg = adp5589_reg,
};
/* ADP5585 */
static unsigned char adp5585_bank(unsigned char offset)
{
return offset > ADP5585_MAX_ROW_NUM;
}
static unsigned char adp5585_bit(unsigned char offset)
{
return (offset > ADP5585_MAX_ROW_NUM) ?
1u << (offset - ADP5585_COL_SHIFT) : 1u << offset;
}
static const unsigned char adp5585_reg_lut[] = {
[ADP5589_GPI_STATUS_A] = ADP5585_GPI_STATUS_A,
[ADP5589_GPI_STATUS_B] = ADP5585_GPI_STATUS_B,
[ADP5589_RPULL_CONFIG_A] = ADP5585_RPULL_CONFIG_A,
[ADP5589_RPULL_CONFIG_B] = ADP5585_RPULL_CONFIG_B,
[ADP5589_RPULL_CONFIG_C] = ADP5585_RPULL_CONFIG_C,
[ADP5589_RPULL_CONFIG_D] = ADP5585_RPULL_CONFIG_D,
[ADP5589_GPI_INT_LEVEL_A] = ADP5585_GPI_INT_LEVEL_A,
[ADP5589_GPI_INT_LEVEL_B] = ADP5585_GPI_INT_LEVEL_B,
[ADP5589_GPI_EVENT_EN_A] = ADP5585_GPI_EVENT_EN_A,
[ADP5589_GPI_EVENT_EN_B] = ADP5585_GPI_EVENT_EN_B,
[ADP5589_GPI_INTERRUPT_EN_A] = ADP5585_GPI_INTERRUPT_EN_A,
[ADP5589_GPI_INTERRUPT_EN_B] = ADP5585_GPI_INTERRUPT_EN_B,
[ADP5589_DEBOUNCE_DIS_A] = ADP5585_DEBOUNCE_DIS_A,
[ADP5589_DEBOUNCE_DIS_B] = ADP5585_DEBOUNCE_DIS_B,
[ADP5589_GPO_DATA_OUT_A] = ADP5585_GPO_DATA_OUT_A,
[ADP5589_GPO_DATA_OUT_B] = ADP5585_GPO_DATA_OUT_B,
[ADP5589_GPO_OUT_MODE_A] = ADP5585_GPO_OUT_MODE_A,
[ADP5589_GPO_OUT_MODE_B] = ADP5585_GPO_OUT_MODE_B,
[ADP5589_GPIO_DIRECTION_A] = ADP5585_GPIO_DIRECTION_A,
[ADP5589_GPIO_DIRECTION_B] = ADP5585_GPIO_DIRECTION_B,
[ADP5589_RESET1_EVENT_A] = ADP5585_RESET1_EVENT_A,
[ADP5589_RESET1_EVENT_B] = ADP5585_RESET1_EVENT_B,
[ADP5589_RESET1_EVENT_C] = ADP5585_RESET1_EVENT_C,
[ADP5589_RESET2_EVENT_A] = ADP5585_RESET2_EVENT_A,
[ADP5589_RESET2_EVENT_B] = ADP5585_RESET2_EVENT_B,
[ADP5589_RESET_CFG] = ADP5585_RESET_CFG,
[ADP5589_PWM_OFFT_LOW] = ADP5585_PWM_OFFT_LOW,
[ADP5589_PWM_OFFT_HIGH] = ADP5585_PWM_OFFT_HIGH,
[ADP5589_PWM_ONT_LOW] = ADP5585_PWM_ONT_LOW,
[ADP5589_PWM_ONT_HIGH] = ADP5585_PWM_ONT_HIGH,
[ADP5589_PWM_CFG] = ADP5585_PWM_CFG,
[ADP5589_LOGIC_1_CFG] = ADP5585_LOGIC_CFG,
[ADP5589_LOGIC_FF_CFG] = ADP5585_LOGIC_FF_CFG,
[ADP5589_LOGIC_INT_EVENT_EN] = ADP5585_LOGIC_INT_EVENT_EN,
[ADP5589_POLL_PTIME_CFG] = ADP5585_POLL_PTIME_CFG,
[ADP5589_PIN_CONFIG_A] = ADP5585_PIN_CONFIG_A,
[ADP5589_PIN_CONFIG_B] = ADP5585_PIN_CONFIG_B,
[ADP5589_PIN_CONFIG_D] = ADP5585_PIN_CONFIG_D,
[ADP5589_GENERAL_CFG] = ADP5585_GENERAL_CFG,
[ADP5589_INT_EN] = ADP5585_INT_EN,
};
static unsigned char adp5585_reg(unsigned char reg)
{
return adp5585_reg_lut[reg];
}
static const struct adp_constants const_adp5585 = {
.maxgpio = ADP5585_MAXGPIO,
.keymapsize = ADP5585_KEYMAPSIZE,
.gpi_pin_row_base = ADP5585_GPI_PIN_ROW_BASE,
.gpi_pin_row_end = ADP5585_GPI_PIN_ROW_END,
.gpi_pin_col_base = ADP5585_GPI_PIN_COL_BASE,
.gpi_pin_base = ADP5585_GPI_PIN_BASE,
.gpi_pin_end = ADP5585_GPI_PIN_END,
.gpimapsize_max = ADP5585_GPIMAPSIZE_MAX,
.c4_extend_cfg = 10,
.max_row_num = ADP5585_MAX_ROW_NUM,
.max_col_num = ADP5585_MAX_COL_NUM,
.row_mask = ADP5585_ROW_MASK,
.col_mask = ADP5585_COL_MASK,
.col_shift = ADP5585_COL_SHIFT,
.bank = adp5585_bank,
.bit = adp5585_bit,
.reg = adp5585_reg,
};
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 = gpiochip_get_data(chip);
unsigned int bank = kpad->var->bank(kpad->gpiomap[off]);
unsigned int bit = kpad->var->bit(kpad->gpiomap[off]);
return !!(adp5589_read(kpad->client,
kpad->var->reg(ADP5589_GPI_STATUS_A) + bank) &
bit);
}
static void adp5589_gpio_set_value(struct gpio_chip *chip,
unsigned off, int val)
{
struct adp5589_kpad *kpad = gpiochip_get_data(chip);
unsigned int bank = kpad->var->bank(kpad->gpiomap[off]);
unsigned int bit = kpad->var->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, kpad->var->reg(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 = gpiochip_get_data(chip);
unsigned int bank = kpad->var->bank(kpad->gpiomap[off]);
unsigned int bit = kpad->var->bit(kpad->gpiomap[off]);
int ret;
mutex_lock(&kpad->gpio_lock);
kpad->dir[bank] &= ~bit;
ret = adp5589_write(kpad->client,
kpad->var->reg(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 = gpiochip_get_data(chip);
unsigned int bank = kpad->var->bank(kpad->gpiomap[off]);
unsigned int bit = kpad->var->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, kpad->var->reg(ADP5589_GPO_DATA_OUT_A)
+ bank, kpad->dat_out[bank]);
ret |= adp5589_write(kpad->client,
kpad->var->reg(ADP5589_GPIO_DIRECTION_A) + bank,
kpad->dir[bank]);
mutex_unlock(&kpad->gpio_lock);
return ret;
}
static int adp5589_build_gpiomap(struct adp5589_kpad *kpad,
const struct adp5589_kpad_platform_data *pdata)
{
bool pin_used[ADP5589_MAXGPIO];
int n_unused = 0;
int i;
memset(pin_used, false, sizeof(pin_used));
for (i = 0; i < kpad->var->maxgpio; i++)
if (pdata->keypad_en_mask & BIT(i))
pin_used[i] = true;
for (i = 0; i < kpad->gpimapsize; i++)
pin_used[kpad->gpimap[i].pin - kpad->var->gpi_pin_base] = true;
if (kpad->extend_cfg & R4_EXTEND_CFG)
pin_used[4] = true;
if (kpad->extend_cfg & C4_EXTEND_CFG)
pin_used[kpad->var->c4_extend_cfg] = true;
if (!kpad->support_row5)
pin_used[5] = true;
for (i = 0; i < kpad->var->maxgpio; i++)
if (!pin_used[i])
kpad->gpiomap[n_unused++] = i;
return n_unused;
}
static int adp5589_gpio_add(struct adp5589_kpad *kpad)
{
struct device *dev = &kpad->client->dev;
const struct adp5589_kpad_platform_data *pdata = dev_get_platdata(dev);
const struct adp5589_gpio_platform_data *gpio_data = pdata->gpio_data;
int i, error;
if (!gpio_data)
return 0;
kpad->gc.parent = dev;
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->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 = devm_gpiochip_add_data(dev, &kpad->gc, kpad);
if (error)
return error;
for (i = 0; i <= kpad->var->bank(kpad->var->maxgpio); i++) {
kpad->dat_out[i] = adp5589_read(kpad->client, kpad->var->reg(
ADP5589_GPO_DATA_OUT_A) + i);
kpad->dir[i] = adp5589_read(kpad->client, kpad->var->reg(
ADP5589_GPIO_DIRECTION_A) + i);
}
return 0;
}
#else
static inline int adp5589_gpio_add(struct adp5589_kpad *kpad)
{
return 0;
}
#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_5_FIFO_1 + i);
int key_val = key & KEY_EV_MASK;
if (key_val >= kpad->var->gpi_pin_base &&
key_val <= kpad->var->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_5_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_5_STATUS) & KEC;
if (ev_cnt) {
adp5589_report_events(kpad, ev_cnt);
input_sync(kpad->input);
}
}
adp5589_write(client, ADP5589_5_INT_STATUS, status); /* Status is W1C */
return IRQ_HANDLED;
}
static int adp5589_get_evcode(struct adp5589_kpad *kpad, unsigned short key)
{
int i;
for (i = 0; i < kpad->var->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 adp5589_setup(struct adp5589_kpad *kpad)
{
struct i2c_client *client = kpad->client;
const struct adp5589_kpad_platform_data *pdata =
dev_get_platdata(&client->dev);
u8 (*reg) (u8) = kpad->var->reg;
unsigned char evt_mode1 = 0, evt_mode2 = 0, evt_mode3 = 0;
unsigned char pull_mask = 0;
int i, ret;
ret = adp5589_write(client, reg(ADP5589_PIN_CONFIG_A),
pdata->keypad_en_mask & kpad->var->row_mask);
ret |= adp5589_write(client, reg(ADP5589_PIN_CONFIG_B),
(pdata->keypad_en_mask >> kpad->var->col_shift) &
kpad->var->col_mask);
if (!kpad->is_adp5585)
ret |= adp5589_write(client, ADP5589_PIN_CONFIG_C,
(pdata->keypad_en_mask >> 16) & 0xFF);
if (!kpad->is_adp5585 && 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_5_FIFO_1 + i);
for (i = 0; i < pdata->gpimapsize; i++) {
unsigned short pin = pdata->gpimap[i].pin;
if (pin <= kpad->var->gpi_pin_row_end) {
evt_mode1 |= BIT(pin - kpad->var->gpi_pin_row_base);
} else {
evt_mode2 |=
BIT(pin - kpad->var->gpi_pin_col_base) & 0xFF;
if (!kpad->is_adp5585)
evt_mode3 |=
BIT(pin - kpad->var->gpi_pin_col_base) >> 8;
}
}
if (pdata->gpimapsize) {
ret |= adp5589_write(client, reg(ADP5589_GPI_EVENT_EN_A),
evt_mode1);
ret |= adp5589_write(client, reg(ADP5589_GPI_EVENT_EN_B),
evt_mode2);
if (!kpad->is_adp5585)
ret |= adp5589_write(client,
reg(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 <= kpad->var->max_row_num; i++) {
unsigned int val = 0, bit = BIT(i);
if (pdata->pullup_en_300k & bit)
val = 0;
else if (pdata->pulldown_en_300k & bit)
val = 1;
else if (pdata->pullup_en_100k & bit)
val = 2;
else if (pdata->pull_dis_mask & bit)
val = 3;
pull_mask |= val << (2 * (i & 0x3));
if (i % 4 == 3 || i == kpad->var->max_row_num) {
ret |= adp5589_write(client, reg(ADP5585_RPULL_CONFIG_A)
+ (i >> 2), pull_mask);
pull_mask = 0;
}
}
for (i = 0; i <= kpad->var->max_col_num; i++) {
unsigned int val = 0, bit = BIT(i + kpad->var->col_shift);
if (pdata->pullup_en_300k & bit)
val = 0;
else if (pdata->pulldown_en_300k & bit)
val = 1;
else if (pdata->pullup_en_100k & bit)
val = 2;
else if (pdata->pull_dis_mask & bit)
val = 3;
pull_mask |= val << (2 * (i & 0x3));
if (i % 4 == 3 || i == kpad->var->max_col_num) {
ret |= adp5589_write(client,
reg(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 |= adp5589_write(client, reg(ADP5589_RESET1_EVENT_A),
adp5589_get_evcode(kpad,
pdata->reset1_key_1));
ret |= adp5589_write(client, reg(ADP5589_RESET1_EVENT_B),
adp5589_get_evcode(kpad,
pdata->reset1_key_2));
ret |= adp5589_write(client, reg(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, reg(ADP5589_RESET2_EVENT_A),
adp5589_get_evcode(kpad,
pdata->reset2_key_1));
ret |= adp5589_write(client, reg(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, reg(ADP5589_RESET_CFG),
pdata->reset_cfg);
ret |= adp5589_write(client, reg(ADP5589_PIN_CONFIG_D),
kpad->extend_cfg);
}
ret |= adp5589_write(client, reg(ADP5589_DEBOUNCE_DIS_A),
pdata->debounce_dis_mask & kpad->var->row_mask);
ret |= adp5589_write(client, reg(ADP5589_DEBOUNCE_DIS_B),
(pdata->debounce_dis_mask >> kpad->var->col_shift)
& kpad->var->col_mask);
if (!kpad->is_adp5585)
ret |= adp5589_write(client, reg(ADP5589_DEBOUNCE_DIS_C),
(pdata->debounce_dis_mask >> 16) & 0xFF);
ret |= adp5589_write(client, reg(ADP5589_POLL_PTIME_CFG),
pdata->scan_cycle_time & PTIME_MASK);
ret |= adp5589_write(client, ADP5589_5_INT_STATUS,
(kpad->is_adp5585 ? 0 : LOGIC2_INT) |
LOGIC1_INT | OVRFLOW_INT |
(kpad->is_adp5585 ? 0 : LOCK_INT) |
GPI_INT | EVENT_INT); /* Status is W1C */
ret |= adp5589_write(client, reg(ADP5589_GENERAL_CFG),
INT_CFG | OSC_EN | CORE_CLK(3));
ret |= adp5589_write(client, reg(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 adp5589_report_switch_state(struct adp5589_kpad *kpad)
{
int gpi_stat_tmp, pin_loc;
int i;
int gpi_stat1 = adp5589_read(kpad->client,
kpad->var->reg(ADP5589_GPI_STATUS_A));
int gpi_stat2 = adp5589_read(kpad->client,
kpad->var->reg(ADP5589_GPI_STATUS_B));
int gpi_stat3 = !kpad->is_adp5585 ?
adp5589_read(kpad->client, ADP5589_GPI_STATUS_C) : 0;
for (i = 0; i < kpad->gpimapsize; i++) {
unsigned short pin = kpad->gpimap[i].pin;
if (pin <= kpad->var->gpi_pin_row_end) {
gpi_stat_tmp = gpi_stat1;
pin_loc = pin - kpad->var->gpi_pin_row_base;
} else if ((pin - kpad->var->gpi_pin_col_base) < 8) {
gpi_stat_tmp = gpi_stat2;
pin_loc = pin - kpad->var->gpi_pin_col_base;
} else {
gpi_stat_tmp = gpi_stat3;
pin_loc = pin - kpad->var->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 & BIT(pin_loc)));
}
input_sync(kpad->input);
}
static int adp5589_keypad_add(struct adp5589_kpad *kpad, unsigned int revid)
{
struct i2c_client *client = kpad->client;
const struct adp5589_kpad_platform_data *pdata =
dev_get_platdata(&client->dev);
struct input_dev *input;
unsigned int i;
int error;
if (!((pdata->keypad_en_mask & kpad->var->row_mask) &&
(pdata->keypad_en_mask >> kpad->var->col_shift)) ||
!pdata->keymap) {
dev_err(&client->dev, "no rows, cols or keymap from pdata\n");
return -EINVAL;
}
if (pdata->keymapsize != kpad->var->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 > kpad->var->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 < kpad->var->gpi_pin_base ||
pin > kpad->var->gpi_pin_end) {
dev_err(&client->dev, "invalid gpi pin data\n");
return -EINVAL;
}
if (BIT(pin - kpad->var->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;
}
input = devm_input_allocate_device(&client->dev);
if (!input)
return -ENOMEM;
kpad->input = input;
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++)
if (kpad->keycode[i] <= KEY_MAX)
__set_bit(kpad->keycode[i], 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");
return error;
}
error = devm_request_threaded_irq(&client->dev, client->irq,
NULL, adp5589_irq,
IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
client->dev.driver->name, kpad);
if (error) {
dev_err(&client->dev, "unable to request irq %d\n", client->irq);
return error;
}
return 0;
}
static void adp5589_clear_config(void *data)
{
struct i2c_client *client = data;
struct adp5589_kpad *kpad = i2c_get_clientdata(client);
adp5589_write(client, kpad->var->reg(ADP5589_GENERAL_CFG), 0);
}
static int adp5589_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct adp5589_kpad *kpad;
const struct adp5589_kpad_platform_data *pdata =
dev_get_platdata(&client->dev);
unsigned int revid;
int error, ret;
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;
}
kpad = devm_kzalloc(&client->dev, sizeof(*kpad), GFP_KERNEL);
if (!kpad)
return -ENOMEM;
kpad->client = client;
switch (id->driver_data) {
case ADP5585_02:
kpad->support_row5 = true;
fallthrough;
case ADP5585_01:
kpad->is_adp5585 = true;
kpad->var = &const_adp5585;
break;
case ADP5589:
kpad->support_row5 = true;
kpad->var = &const_adp5589;
break;
}
error = devm_add_action_or_reset(&client->dev, adp5589_clear_config,
client);
if (error)
return error;
ret = adp5589_read(client, ADP5589_5_ID);
if (ret < 0)
return ret;
revid = (u8) ret & ADP5589_5_DEVICE_ID_MASK;
if (pdata->keymapsize) {
error = adp5589_keypad_add(kpad, revid);
if (error)
return error;
}
error = adp5589_setup(kpad);
if (error)
return error;
if (kpad->gpimapsize)
adp5589_report_switch_state(kpad);
error = adp5589_gpio_add(kpad);
if (error)
return error;
i2c_set_clientdata(client, kpad);
dev_info(&client->dev, "Rev.%d keypad, irq %d\n", revid, client->irq);
return 0;
}
static int __maybe_unused adp5589_suspend(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct adp5589_kpad *kpad = i2c_get_clientdata(client);
if (kpad->input)
disable_irq(client->irq);
return 0;
}
static int __maybe_unused adp5589_resume(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct adp5589_kpad *kpad = i2c_get_clientdata(client);
if (kpad->input)
enable_irq(client->irq);
return 0;
}
static SIMPLE_DEV_PM_OPS(adp5589_dev_pm_ops, adp5589_suspend, adp5589_resume);
static const struct i2c_device_id adp5589_id[] = {
{"adp5589-keys", ADP5589},
{"adp5585-keys", ADP5585_01},
{"adp5585-02-keys", ADP5585_02}, /* Adds ROW5 to ADP5585 */
{}
};
MODULE_DEVICE_TABLE(i2c, adp5589_id);
static struct i2c_driver adp5589_driver = {
.driver = {
.name = KBUILD_MODNAME,
.pm = &adp5589_dev_pm_ops,
},
.probe = adp5589_probe,
.id_table = adp5589_id,
};
module_i2c_driver(adp5589_driver);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
MODULE_DESCRIPTION("ADP5589/ADP5585 Keypad driver");