532 lines
12 KiB
C
532 lines
12 KiB
C
|
// SPDX-License-Identifier: GPL-2.0-only
|
||
|
|
/*
|
||
|
|
* Simple driver for Texas Instruments LM355x LED Flash driver chip
|
||
|
|
* Copyright (C) 2012 Texas Instruments
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/module.h>
|
||
|
|
#include <linux/delay.h>
|
||
|
|
#include <linux/i2c.h>
|
||
|
|
#include <linux/leds.h>
|
||
|
|
#include <linux/slab.h>
|
||
|
|
#include <linux/platform_device.h>
|
||
|
|
#include <linux/fs.h>
|
||
|
|
#include <linux/regmap.h>
|
||
|
|
#include <linux/platform_data/leds-lm355x.h>
|
||
|
|
|
||
|
|
enum lm355x_type {
|
||
|
|
CHIP_LM3554 = 0,
|
||
|
|
CHIP_LM3556,
|
||
|
|
};
|
||
|
|
|
||
|
|
enum lm355x_regs {
|
||
|
|
REG_FLAG = 0,
|
||
|
|
REG_TORCH_CFG,
|
||
|
|
REG_TORCH_CTRL,
|
||
|
|
REG_STROBE_CFG,
|
||
|
|
REG_FLASH_CTRL,
|
||
|
|
REG_INDI_CFG,
|
||
|
|
REG_INDI_CTRL,
|
||
|
|
REG_OPMODE,
|
||
|
|
REG_MAX,
|
||
|
|
};
|
||
|
|
|
||
|
|
/* operation mode */
|
||
|
|
enum lm355x_mode {
|
||
|
|
MODE_SHDN = 0,
|
||
|
|
MODE_INDIC,
|
||
|
|
MODE_TORCH,
|
||
|
|
MODE_FLASH
|
||
|
|
};
|
||
|
|
|
||
|
|
/* register map info. */
|
||
|
|
struct lm355x_reg_data {
|
||
|
|
u8 regno;
|
||
|
|
u8 mask;
|
||
|
|
u8 shift;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct lm355x_chip_data {
|
||
|
|
struct device *dev;
|
||
|
|
enum lm355x_type type;
|
||
|
|
|
||
|
|
struct led_classdev cdev_flash;
|
||
|
|
struct led_classdev cdev_torch;
|
||
|
|
struct led_classdev cdev_indicator;
|
||
|
|
|
||
|
|
struct lm355x_platform_data *pdata;
|
||
|
|
struct regmap *regmap;
|
||
|
|
struct mutex lock;
|
||
|
|
|
||
|
|
unsigned int last_flag;
|
||
|
|
struct lm355x_reg_data *regs;
|
||
|
|
};
|
||
|
|
|
||
|
|
/* specific indicator function for lm3556 */
|
||
|
|
enum lm3556_indic_pulse_time {
|
||
|
|
PULSE_TIME_0_MS = 0,
|
||
|
|
PULSE_TIME_32_MS,
|
||
|
|
PULSE_TIME_64_MS,
|
||
|
|
PULSE_TIME_92_MS,
|
||
|
|
PULSE_TIME_128_MS,
|
||
|
|
PULSE_TIME_160_MS,
|
||
|
|
PULSE_TIME_196_MS,
|
||
|
|
PULSE_TIME_224_MS,
|
||
|
|
PULSE_TIME_256_MS,
|
||
|
|
PULSE_TIME_288_MS,
|
||
|
|
PULSE_TIME_320_MS,
|
||
|
|
PULSE_TIME_352_MS,
|
||
|
|
PULSE_TIME_384_MS,
|
||
|
|
PULSE_TIME_416_MS,
|
||
|
|
PULSE_TIME_448_MS,
|
||
|
|
PULSE_TIME_480_MS,
|
||
|
|
};
|
||
|
|
|
||
|
|
enum lm3556_indic_n_blank {
|
||
|
|
INDIC_N_BLANK_0 = 0,
|
||
|
|
INDIC_N_BLANK_1,
|
||
|
|
INDIC_N_BLANK_2,
|
||
|
|
INDIC_N_BLANK_3,
|
||
|
|
INDIC_N_BLANK_4,
|
||
|
|
INDIC_N_BLANK_5,
|
||
|
|
INDIC_N_BLANK_6,
|
||
|
|
INDIC_N_BLANK_7,
|
||
|
|
INDIC_N_BLANK_8,
|
||
|
|
INDIC_N_BLANK_9,
|
||
|
|
INDIC_N_BLANK_10,
|
||
|
|
INDIC_N_BLANK_11,
|
||
|
|
INDIC_N_BLANK_12,
|
||
|
|
INDIC_N_BLANK_13,
|
||
|
|
INDIC_N_BLANK_14,
|
||
|
|
INDIC_N_BLANK_15,
|
||
|
|
};
|
||
|
|
|
||
|
|
enum lm3556_indic_period {
|
||
|
|
INDIC_PERIOD_0 = 0,
|
||
|
|
INDIC_PERIOD_1,
|
||
|
|
INDIC_PERIOD_2,
|
||
|
|
INDIC_PERIOD_3,
|
||
|
|
INDIC_PERIOD_4,
|
||
|
|
INDIC_PERIOD_5,
|
||
|
|
INDIC_PERIOD_6,
|
||
|
|
INDIC_PERIOD_7,
|
||
|
|
};
|
||
|
|
|
||
|
|
#define INDIC_PATTERN_SIZE 4
|
||
|
|
|
||
|
|
struct indicator {
|
||
|
|
u8 blinking;
|
||
|
|
u8 period_cnt;
|
||
|
|
};
|
||
|
|
|
||
|
|
/* indicator pattern data only for lm3556 */
|
||
|
|
static struct indicator indicator_pattern[INDIC_PATTERN_SIZE] = {
|
||
|
|
[0] = {(INDIC_N_BLANK_1 << 4) | PULSE_TIME_32_MS, INDIC_PERIOD_1},
|
||
|
|
[1] = {(INDIC_N_BLANK_15 << 4) | PULSE_TIME_32_MS, INDIC_PERIOD_2},
|
||
|
|
[2] = {(INDIC_N_BLANK_10 << 4) | PULSE_TIME_32_MS, INDIC_PERIOD_4},
|
||
|
|
[3] = {(INDIC_N_BLANK_5 << 4) | PULSE_TIME_32_MS, INDIC_PERIOD_7},
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct lm355x_reg_data lm3554_regs[REG_MAX] = {
|
||
|
|
[REG_FLAG] = {0xD0, 0xBF, 0},
|
||
|
|
[REG_TORCH_CFG] = {0xE0, 0x80, 7},
|
||
|
|
[REG_TORCH_CTRL] = {0xA0, 0x38, 3},
|
||
|
|
[REG_STROBE_CFG] = {0xE0, 0x04, 2},
|
||
|
|
[REG_FLASH_CTRL] = {0xB0, 0x78, 3},
|
||
|
|
[REG_INDI_CFG] = {0xE0, 0x08, 3},
|
||
|
|
[REG_INDI_CTRL] = {0xA0, 0xC0, 6},
|
||
|
|
[REG_OPMODE] = {0xA0, 0x03, 0},
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct lm355x_reg_data lm3556_regs[REG_MAX] = {
|
||
|
|
[REG_FLAG] = {0x0B, 0xFF, 0},
|
||
|
|
[REG_TORCH_CFG] = {0x0A, 0x10, 4},
|
||
|
|
[REG_TORCH_CTRL] = {0x09, 0x70, 4},
|
||
|
|
[REG_STROBE_CFG] = {0x0A, 0x20, 5},
|
||
|
|
[REG_FLASH_CTRL] = {0x09, 0x0F, 0},
|
||
|
|
[REG_INDI_CFG] = {0xFF, 0xFF, 0},
|
||
|
|
[REG_INDI_CTRL] = {0x09, 0x70, 4},
|
||
|
|
[REG_OPMODE] = {0x0A, 0x03, 0},
|
||
|
|
};
|
||
|
|
|
||
|
|
static char lm355x_name[][I2C_NAME_SIZE] = {
|
||
|
|
[CHIP_LM3554] = LM3554_NAME,
|
||
|
|
[CHIP_LM3556] = LM3556_NAME,
|
||
|
|
};
|
||
|
|
|
||
|
|
/* chip initialize */
|
||
|
|
static int lm355x_chip_init(struct lm355x_chip_data *chip)
|
||
|
|
{
|
||
|
|
int ret;
|
||
|
|
unsigned int reg_val;
|
||
|
|
struct lm355x_platform_data *pdata = chip->pdata;
|
||
|
|
|
||
|
|
/* input and output pins configuration */
|
||
|
|
switch (chip->type) {
|
||
|
|
case CHIP_LM3554:
|
||
|
|
reg_val = (u32)pdata->pin_tx2 | (u32)pdata->ntc_pin;
|
||
|
|
ret = regmap_update_bits(chip->regmap, 0xE0, 0x28, reg_val);
|
||
|
|
if (ret < 0)
|
||
|
|
goto out;
|
||
|
|
reg_val = (u32)pdata->pass_mode;
|
||
|
|
ret = regmap_update_bits(chip->regmap, 0xA0, 0x04, reg_val);
|
||
|
|
if (ret < 0)
|
||
|
|
goto out;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case CHIP_LM3556:
|
||
|
|
reg_val = (u32)pdata->pin_tx2 | (u32)pdata->ntc_pin |
|
||
|
|
(u32)pdata->pass_mode;
|
||
|
|
ret = regmap_update_bits(chip->regmap, 0x0A, 0xC4, reg_val);
|
||
|
|
if (ret < 0)
|
||
|
|
goto out;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
return -ENODATA;
|
||
|
|
}
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
out:
|
||
|
|
dev_err(chip->dev, "%s:i2c access fail to register\n", __func__);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* chip control */
|
||
|
|
static int lm355x_control(struct lm355x_chip_data *chip,
|
||
|
|
u8 brightness, enum lm355x_mode opmode)
|
||
|
|
{
|
||
|
|
int ret;
|
||
|
|
unsigned int reg_val;
|
||
|
|
struct lm355x_platform_data *pdata = chip->pdata;
|
||
|
|
struct lm355x_reg_data *preg = chip->regs;
|
||
|
|
|
||
|
|
ret = regmap_read(chip->regmap, preg[REG_FLAG].regno, &chip->last_flag);
|
||
|
|
if (ret < 0)
|
||
|
|
goto out;
|
||
|
|
if (chip->last_flag & preg[REG_FLAG].mask)
|
||
|
|
dev_info(chip->dev, "%s Last FLAG is 0x%x\n",
|
||
|
|
lm355x_name[chip->type],
|
||
|
|
chip->last_flag & preg[REG_FLAG].mask);
|
||
|
|
/* brightness 0 means shutdown */
|
||
|
|
if (!brightness)
|
||
|
|
opmode = MODE_SHDN;
|
||
|
|
|
||
|
|
switch (opmode) {
|
||
|
|
case MODE_TORCH:
|
||
|
|
ret =
|
||
|
|
regmap_update_bits(chip->regmap, preg[REG_TORCH_CTRL].regno,
|
||
|
|
preg[REG_TORCH_CTRL].mask,
|
||
|
|
(brightness - 1)
|
||
|
|
<< preg[REG_TORCH_CTRL].shift);
|
||
|
|
if (ret < 0)
|
||
|
|
goto out;
|
||
|
|
|
||
|
|
if (pdata->pin_tx1 != LM355x_PIN_TORCH_DISABLE) {
|
||
|
|
ret =
|
||
|
|
regmap_update_bits(chip->regmap,
|
||
|
|
preg[REG_TORCH_CFG].regno,
|
||
|
|
preg[REG_TORCH_CFG].mask,
|
||
|
|
0x01 <<
|
||
|
|
preg[REG_TORCH_CFG].shift);
|
||
|
|
if (ret < 0)
|
||
|
|
goto out;
|
||
|
|
opmode = MODE_SHDN;
|
||
|
|
dev_info(chip->dev,
|
||
|
|
"torch brt is set - ext. torch pin mode\n");
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MODE_FLASH:
|
||
|
|
|
||
|
|
ret =
|
||
|
|
regmap_update_bits(chip->regmap, preg[REG_FLASH_CTRL].regno,
|
||
|
|
preg[REG_FLASH_CTRL].mask,
|
||
|
|
(brightness - 1)
|
||
|
|
<< preg[REG_FLASH_CTRL].shift);
|
||
|
|
if (ret < 0)
|
||
|
|
goto out;
|
||
|
|
|
||
|
|
if (pdata->pin_strobe != LM355x_PIN_STROBE_DISABLE) {
|
||
|
|
if (chip->type == CHIP_LM3554)
|
||
|
|
reg_val = 0x00;
|
||
|
|
else
|
||
|
|
reg_val = 0x01;
|
||
|
|
ret =
|
||
|
|
regmap_update_bits(chip->regmap,
|
||
|
|
preg[REG_STROBE_CFG].regno,
|
||
|
|
preg[REG_STROBE_CFG].mask,
|
||
|
|
reg_val <<
|
||
|
|
preg[REG_STROBE_CFG].shift);
|
||
|
|
if (ret < 0)
|
||
|
|
goto out;
|
||
|
|
opmode = MODE_SHDN;
|
||
|
|
dev_info(chip->dev,
|
||
|
|
"flash brt is set - ext. strobe pin mode\n");
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MODE_INDIC:
|
||
|
|
ret =
|
||
|
|
regmap_update_bits(chip->regmap, preg[REG_INDI_CTRL].regno,
|
||
|
|
preg[REG_INDI_CTRL].mask,
|
||
|
|
(brightness - 1)
|
||
|
|
<< preg[REG_INDI_CTRL].shift);
|
||
|
|
if (ret < 0)
|
||
|
|
goto out;
|
||
|
|
|
||
|
|
if (pdata->pin_tx2 != LM355x_PIN_TX_DISABLE) {
|
||
|
|
ret =
|
||
|
|
regmap_update_bits(chip->regmap,
|
||
|
|
preg[REG_INDI_CFG].regno,
|
||
|
|
preg[REG_INDI_CFG].mask,
|
||
|
|
0x01 <<
|
||
|
|
preg[REG_INDI_CFG].shift);
|
||
|
|
if (ret < 0)
|
||
|
|
goto out;
|
||
|
|
opmode = MODE_SHDN;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case MODE_SHDN:
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
/* operation mode control */
|
||
|
|
ret = regmap_update_bits(chip->regmap, preg[REG_OPMODE].regno,
|
||
|
|
preg[REG_OPMODE].mask,
|
||
|
|
opmode << preg[REG_OPMODE].shift);
|
||
|
|
if (ret < 0)
|
||
|
|
goto out;
|
||
|
|
return ret;
|
||
|
|
out:
|
||
|
|
dev_err(chip->dev, "%s:i2c access fail to register\n", __func__);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* torch */
|
||
|
|
|
||
|
|
static int lm355x_torch_brightness_set(struct led_classdev *cdev,
|
||
|
|
enum led_brightness brightness)
|
||
|
|
{
|
||
|
|
struct lm355x_chip_data *chip =
|
||
|
|
container_of(cdev, struct lm355x_chip_data, cdev_torch);
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
mutex_lock(&chip->lock);
|
||
|
|
ret = lm355x_control(chip, brightness, MODE_TORCH);
|
||
|
|
mutex_unlock(&chip->lock);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* flash */
|
||
|
|
|
||
|
|
static int lm355x_strobe_brightness_set(struct led_classdev *cdev,
|
||
|
|
enum led_brightness brightness)
|
||
|
|
{
|
||
|
|
struct lm355x_chip_data *chip =
|
||
|
|
container_of(cdev, struct lm355x_chip_data, cdev_flash);
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
mutex_lock(&chip->lock);
|
||
|
|
ret = lm355x_control(chip, brightness, MODE_FLASH);
|
||
|
|
mutex_unlock(&chip->lock);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* indicator */
|
||
|
|
|
||
|
|
static int lm355x_indicator_brightness_set(struct led_classdev *cdev,
|
||
|
|
enum led_brightness brightness)
|
||
|
|
{
|
||
|
|
struct lm355x_chip_data *chip =
|
||
|
|
container_of(cdev, struct lm355x_chip_data, cdev_indicator);
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
mutex_lock(&chip->lock);
|
||
|
|
ret = lm355x_control(chip, brightness, MODE_INDIC);
|
||
|
|
mutex_unlock(&chip->lock);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* indicator pattern only for lm3556*/
|
||
|
|
static ssize_t pattern_store(struct device *dev,
|
||
|
|
struct device_attribute *attr,
|
||
|
|
const char *buf, size_t size)
|
||
|
|
{
|
||
|
|
ssize_t ret;
|
||
|
|
struct led_classdev *led_cdev = dev_get_drvdata(dev);
|
||
|
|
struct lm355x_chip_data *chip =
|
||
|
|
container_of(led_cdev, struct lm355x_chip_data, cdev_indicator);
|
||
|
|
unsigned int state;
|
||
|
|
|
||
|
|
ret = kstrtouint(buf, 10, &state);
|
||
|
|
if (ret)
|
||
|
|
goto out;
|
||
|
|
if (state > INDIC_PATTERN_SIZE - 1)
|
||
|
|
state = INDIC_PATTERN_SIZE - 1;
|
||
|
|
|
||
|
|
ret = regmap_write(chip->regmap, 0x04,
|
||
|
|
indicator_pattern[state].blinking);
|
||
|
|
if (ret < 0)
|
||
|
|
goto out;
|
||
|
|
|
||
|
|
ret = regmap_write(chip->regmap, 0x05,
|
||
|
|
indicator_pattern[state].period_cnt);
|
||
|
|
if (ret < 0)
|
||
|
|
goto out;
|
||
|
|
|
||
|
|
return size;
|
||
|
|
out:
|
||
|
|
dev_err(chip->dev, "%s:i2c access fail to register\n", __func__);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static DEVICE_ATTR_WO(pattern);
|
||
|
|
|
||
|
|
static struct attribute *lm355x_indicator_attrs[] = {
|
||
|
|
&dev_attr_pattern.attr,
|
||
|
|
NULL
|
||
|
|
};
|
||
|
|
ATTRIBUTE_GROUPS(lm355x_indicator);
|
||
|
|
|
||
|
|
static const struct regmap_config lm355x_regmap = {
|
||
|
|
.reg_bits = 8,
|
||
|
|
.val_bits = 8,
|
||
|
|
.max_register = 0xFF,
|
||
|
|
};
|
||
|
|
|
||
|
|
/* module initialize */
|
||
|
|
static int lm355x_probe(struct i2c_client *client,
|
||
|
|
const struct i2c_device_id *id)
|
||
|
|
{
|
||
|
|
struct lm355x_platform_data *pdata = dev_get_platdata(&client->dev);
|
||
|
|
struct lm355x_chip_data *chip;
|
||
|
|
|
||
|
|
int err;
|
||
|
|
|
||
|
|
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
|
||
|
|
dev_err(&client->dev, "i2c functionality check fail.\n");
|
||
|
|
return -EOPNOTSUPP;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (pdata == NULL) {
|
||
|
|
dev_err(&client->dev, "needs Platform Data.\n");
|
||
|
|
return -ENODATA;
|
||
|
|
}
|
||
|
|
|
||
|
|
chip = devm_kzalloc(&client->dev,
|
||
|
|
sizeof(struct lm355x_chip_data), GFP_KERNEL);
|
||
|
|
if (!chip)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
chip->dev = &client->dev;
|
||
|
|
chip->type = id->driver_data;
|
||
|
|
switch (id->driver_data) {
|
||
|
|
case CHIP_LM3554:
|
||
|
|
chip->regs = lm3554_regs;
|
||
|
|
break;
|
||
|
|
case CHIP_LM3556:
|
||
|
|
chip->regs = lm3556_regs;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
return -ENOSYS;
|
||
|
|
}
|
||
|
|
chip->pdata = pdata;
|
||
|
|
|
||
|
|
chip->regmap = devm_regmap_init_i2c(client, &lm355x_regmap);
|
||
|
|
if (IS_ERR(chip->regmap)) {
|
||
|
|
err = PTR_ERR(chip->regmap);
|
||
|
|
dev_err(&client->dev,
|
||
|
|
"Failed to allocate register map: %d\n", err);
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
mutex_init(&chip->lock);
|
||
|
|
i2c_set_clientdata(client, chip);
|
||
|
|
|
||
|
|
err = lm355x_chip_init(chip);
|
||
|
|
if (err < 0)
|
||
|
|
goto err_out;
|
||
|
|
|
||
|
|
/* flash */
|
||
|
|
chip->cdev_flash.name = "flash";
|
||
|
|
chip->cdev_flash.max_brightness = 16;
|
||
|
|
chip->cdev_flash.brightness_set_blocking = lm355x_strobe_brightness_set;
|
||
|
|
chip->cdev_flash.default_trigger = "flash";
|
||
|
|
err = led_classdev_register(&client->dev, &chip->cdev_flash);
|
||
|
|
if (err < 0)
|
||
|
|
goto err_out;
|
||
|
|
/* torch */
|
||
|
|
chip->cdev_torch.name = "torch";
|
||
|
|
chip->cdev_torch.max_brightness = 8;
|
||
|
|
chip->cdev_torch.brightness_set_blocking = lm355x_torch_brightness_set;
|
||
|
|
chip->cdev_torch.default_trigger = "torch";
|
||
|
|
err = led_classdev_register(&client->dev, &chip->cdev_torch);
|
||
|
|
if (err < 0)
|
||
|
|
goto err_create_torch_file;
|
||
|
|
/* indicator */
|
||
|
|
chip->cdev_indicator.name = "indicator";
|
||
|
|
if (id->driver_data == CHIP_LM3554)
|
||
|
|
chip->cdev_indicator.max_brightness = 4;
|
||
|
|
else
|
||
|
|
chip->cdev_indicator.max_brightness = 8;
|
||
|
|
chip->cdev_indicator.brightness_set_blocking =
|
||
|
|
lm355x_indicator_brightness_set;
|
||
|
|
/* indicator pattern control only for LM3556 */
|
||
|
|
if (id->driver_data == CHIP_LM3556)
|
||
|
|
chip->cdev_indicator.groups = lm355x_indicator_groups;
|
||
|
|
err = led_classdev_register(&client->dev, &chip->cdev_indicator);
|
||
|
|
if (err < 0)
|
||
|
|
goto err_create_indicator_file;
|
||
|
|
|
||
|
|
dev_info(&client->dev, "%s is initialized\n",
|
||
|
|
lm355x_name[id->driver_data]);
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
err_create_indicator_file:
|
||
|
|
led_classdev_unregister(&chip->cdev_torch);
|
||
|
|
err_create_torch_file:
|
||
|
|
led_classdev_unregister(&chip->cdev_flash);
|
||
|
|
err_out:
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int lm355x_remove(struct i2c_client *client)
|
||
|
|
{
|
||
|
|
struct lm355x_chip_data *chip = i2c_get_clientdata(client);
|
||
|
|
struct lm355x_reg_data *preg = chip->regs;
|
||
|
|
|
||
|
|
regmap_write(chip->regmap, preg[REG_OPMODE].regno, 0);
|
||
|
|
led_classdev_unregister(&chip->cdev_indicator);
|
||
|
|
led_classdev_unregister(&chip->cdev_torch);
|
||
|
|
led_classdev_unregister(&chip->cdev_flash);
|
||
|
|
dev_info(&client->dev, "%s is removed\n", lm355x_name[chip->type]);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct i2c_device_id lm355x_id[] = {
|
||
|
|
{LM3554_NAME, CHIP_LM3554},
|
||
|
|
{LM3556_NAME, CHIP_LM3556},
|
||
|
|
{}
|
||
|
|
};
|
||
|
|
|
||
|
|
MODULE_DEVICE_TABLE(i2c, lm355x_id);
|
||
|
|
|
||
|
|
static struct i2c_driver lm355x_i2c_driver = {
|
||
|
|
.driver = {
|
||
|
|
.name = LM355x_NAME,
|
||
|
|
.pm = NULL,
|
||
|
|
},
|
||
|
|
.probe = lm355x_probe,
|
||
|
|
.remove = lm355x_remove,
|
||
|
|
.id_table = lm355x_id,
|
||
|
|
};
|
||
|
|
|
||
|
|
module_i2c_driver(lm355x_i2c_driver);
|
||
|
|
|
||
|
|
MODULE_DESCRIPTION("Texas Instruments Flash Lighting driver for LM355x");
|
||
|
|
MODULE_AUTHOR("Daniel Jeong <daniel.jeong@ti.com>");
|
||
|
|
MODULE_AUTHOR("G.Shark Jeong <gshark.jeong@gmail.com>");
|
||
|
|
MODULE_LICENSE("GPL v2");
|