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Message-ID: <CAK5ve-JR+1fyOOmkruuyZMB-+JZMc=RPNEdyCGe8deNsVQVR3A@mail.gmail.com>
Date: Tue, 4 Sep 2012 16:39:54 +0800
From: Bryan Wu <bryan.wu@...onical.com>
To: "G.Shark Jeong" <gshark.jeong@...il.com>
Cc: Richard Purdie <rpurdie@...ys.net>,
Daniel Jeong <daniel.jeong@...com>,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1 v2] leds: Add new LED driver for lm355x chips
On Mon, Sep 3, 2012 at 3:29 PM, G.Shark Jeong <gshark.jeong@...il.com> wrote:
> From: "G.Shark Jeong" <gshark.jeong@...il.com>
>
> LM3554 and LM3556 have similar functions but very different register map.
> This driver is a general version for lm3554 and lm3556 both,led chips of TI.
> lm3556 driver can be replaced by this driver.
>
> LM3554 :
> The LM3554 is a 2 MHz fixed-frequency synchronous boost
> converter with 1.2A dual high side led drivers.
> Datasheet: www.ti.com/lit/ds/symlink/lm3554.pdf
>
> LM3556 :
> The LM3556 is a 4 MHz fixed-frequency synchronous boost
> converter plus 1.5A constant current driver for a high-current white LED.
> Datasheet: www.national.com/ds/LM/LM3556.pdf
>
> Signed-off-by: G.Shark Jeong <gshark.jeong@...il.com>
Thanks for adding work_queue stuff and please find my comments below.
> ---
> drivers/leds/Kconfig | 8 +-
> drivers/leds/Makefile | 2 +-
> drivers/leds/leds-lm3556.c | 512 -------------------------
> drivers/leds/leds-lm355x.c | 574 +++++++++++++++++++++++++++++
> include/linux/platform_data/leds-lm3556.h | 50 ---
> include/linux/platform_data/leds-lm355x.h | 66 ++++
> 6 files changed, 645 insertions(+), 567 deletions(-)
> delete mode 100644 drivers/leds/leds-lm3556.c
> create mode 100644 drivers/leds/leds-lm355x.c
> delete mode 100644 include/linux/platform_data/leds-lm3556.h
> create mode 100644 include/linux/platform_data/leds-lm355x.h
>
> diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
> index c96bbaa..4f6ced2 100644
> --- a/drivers/leds/Kconfig
> +++ b/drivers/leds/Kconfig
> @@ -422,13 +422,13 @@ config LEDS_MAX8997
> This option enables support for on-chip LED drivers on
> MAXIM MAX8997 PMIC.
>
> -config LEDS_LM3556
> - tristate "LED support for LM3556 Chip"
> +config LEDS_LM355x
> + tristate "LED support for LM355x Chips, LM3554 and LM3556"
> depends on LEDS_CLASS && I2C
> select REGMAP_I2C
> help
> - This option enables support for LEDs connected to LM3556.
> - LM3556 includes Torch, Flash and Indicator functions.
> + This option enables support for LEDs connected to LM355x.
> + LM355x includes Torch, Flash and Indicator functions.
>
> config LEDS_OT200
> tristate "LED support for the Bachmann OT200"
> diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
> index a4429a9..b57a021 100644
> --- a/drivers/leds/Makefile
> +++ b/drivers/leds/Makefile
> @@ -48,7 +48,7 @@ obj-$(CONFIG_LEDS_NETXBIG) += leds-netxbig.o
> obj-$(CONFIG_LEDS_ASIC3) += leds-asic3.o
> obj-$(CONFIG_LEDS_RENESAS_TPU) += leds-renesas-tpu.o
> obj-$(CONFIG_LEDS_MAX8997) += leds-max8997.o
> -obj-$(CONFIG_LEDS_LM3556) += leds-lm3556.o
> +obj-$(CONFIG_LEDS_LM355x) += leds-lm355x.o
> obj-$(CONFIG_LEDS_BLINKM) += leds-blinkm.o
>
> # LED SPI Drivers
> diff --git a/drivers/leds/leds-lm3556.c b/drivers/leds/leds-lm3556.c
> deleted file mode 100644
> index 3062abd..0000000
> --- a/drivers/leds/leds-lm3556.c
> +++ /dev/null
> @@ -1,512 +0,0 @@
> -/*
> - * Simple driver for Texas Instruments LM3556 LED Flash driver chip (Rev0x03)
> - * Copyright (C) 2012 Texas Instruments
> - *
> - * This program is free software; you can redistribute it and/or modify
> - * it under the terms of the GNU General Public License version 2 as
> - * published by the Free Software Foundation.
> - *
> - * Please refer Documentation/leds/leds-lm3556.txt file.
> - */
> -#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-lm3556.h>
> -
> -#define REG_FILT_TIME (0x0)
> -#define REG_IVFM_MODE (0x1)
> -#define REG_NTC (0x2)
> -#define REG_INDIC_TIME (0x3)
> -#define REG_INDIC_BLINK (0x4)
> -#define REG_INDIC_PERIOD (0x5)
> -#define REG_TORCH_TIME (0x6)
> -#define REG_CONF (0x7)
> -#define REG_FLASH (0x8)
> -#define REG_I_CTRL (0x9)
> -#define REG_ENABLE (0xA)
> -#define REG_FLAG (0xB)
> -#define REG_MAX (0xB)
> -
> -#define IVFM_FILTER_TIME_SHIFT (3)
> -#define UVLO_EN_SHIFT (7)
> -#define HYSTERSIS_SHIFT (5)
> -#define IVM_D_TH_SHIFT (2)
> -#define IVFM_ADJ_MODE_SHIFT (0)
> -#define NTC_EVENT_LVL_SHIFT (5)
> -#define NTC_TRIP_TH_SHIFT (2)
> -#define NTC_BIAS_I_LVL_SHIFT (0)
> -#define INDIC_RAMP_UP_TIME_SHIFT (3)
> -#define INDIC_RAMP_DN_TIME_SHIFT (0)
> -#define INDIC_N_BLANK_SHIFT (4)
> -#define INDIC_PULSE_TIME_SHIFT (0)
> -#define INDIC_N_PERIOD_SHIFT (0)
> -#define TORCH_RAMP_UP_TIME_SHIFT (3)
> -#define TORCH_RAMP_DN_TIME_SHIFT (0)
> -#define STROBE_USUAGE_SHIFT (7)
> -#define STROBE_PIN_POLARITY_SHIFT (6)
> -#define TORCH_PIN_POLARITY_SHIFT (5)
> -#define TX_PIN_POLARITY_SHIFT (4)
> -#define TX_EVENT_LVL_SHIFT (3)
> -#define IVFM_EN_SHIFT (2)
> -#define NTC_MODE_SHIFT (1)
> -#define INDIC_MODE_SHIFT (0)
> -#define INDUCTOR_I_LIMIT_SHIFT (6)
> -#define FLASH_RAMP_TIME_SHIFT (3)
> -#define FLASH_TOUT_TIME_SHIFT (0)
> -#define TORCH_I_SHIFT (4)
> -#define FLASH_I_SHIFT (0)
> -#define NTC_EN_SHIFT (7)
> -#define TX_PIN_EN_SHIFT (6)
> -#define STROBE_PIN_EN_SHIFT (5)
> -#define TORCH_PIN_EN_SHIFT (4)
> -#define PRECHG_MODE_EN_SHIFT (3)
> -#define PASS_MODE_ONLY_EN_SHIFT (2)
> -#define MODE_BITS_SHIFT (0)
> -
> -#define IVFM_FILTER_TIME_MASK (0x3)
> -#define UVLO_EN_MASK (0x1)
> -#define HYSTERSIS_MASK (0x3)
> -#define IVM_D_TH_MASK (0x7)
> -#define IVFM_ADJ_MODE_MASK (0x3)
> -#define NTC_EVENT_LVL_MASK (0x1)
> -#define NTC_TRIP_TH_MASK (0x7)
> -#define NTC_BIAS_I_LVL_MASK (0x3)
> -#define INDIC_RAMP_UP_TIME_MASK (0x7)
> -#define INDIC_RAMP_DN_TIME_MASK (0x7)
> -#define INDIC_N_BLANK_MASK (0x7)
> -#define INDIC_PULSE_TIME_MASK (0x7)
> -#define INDIC_N_PERIOD_MASK (0x7)
> -#define TORCH_RAMP_UP_TIME_MASK (0x7)
> -#define TORCH_RAMP_DN_TIME_MASK (0x7)
> -#define STROBE_USUAGE_MASK (0x1)
> -#define STROBE_PIN_POLARITY_MASK (0x1)
> -#define TORCH_PIN_POLARITY_MASK (0x1)
> -#define TX_PIN_POLARITY_MASK (0x1)
> -#define TX_EVENT_LVL_MASK (0x1)
> -#define IVFM_EN_MASK (0x1)
> -#define NTC_MODE_MASK (0x1)
> -#define INDIC_MODE_MASK (0x1)
> -#define INDUCTOR_I_LIMIT_MASK (0x3)
> -#define FLASH_RAMP_TIME_MASK (0x7)
> -#define FLASH_TOUT_TIME_MASK (0x7)
> -#define TORCH_I_MASK (0x7)
> -#define FLASH_I_MASK (0xF)
> -#define NTC_EN_MASK (0x1)
> -#define TX_PIN_EN_MASK (0x1)
> -#define STROBE_PIN_EN_MASK (0x1)
> -#define TORCH_PIN_EN_MASK (0x1)
> -#define PRECHG_MODE_EN_MASK (0x1)
> -#define PASS_MODE_ONLY_EN_MASK (0x1)
> -#define MODE_BITS_MASK (0x13)
> -#define EX_PIN_CONTROL_MASK (0xF1)
> -#define EX_PIN_ENABLE_MASK (0x70)
> -
> -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,
> -};
> -
> -enum lm3556_mode {
> - MODES_STASNDBY = 0,
> - MODES_INDIC,
> - MODES_TORCH,
> - MODES_FLASH
> -};
> -
> -#define INDIC_PATTERN_SIZE 4
> -
> -struct indicator {
> - u8 blinking;
> - u8 period_cnt;
> -};
> -
> -struct lm3556_chip_data {
> - struct device *dev;
> -
> - struct led_classdev cdev_flash;
> - struct led_classdev cdev_torch;
> - struct led_classdev cdev_indicator;
> -
> - struct lm3556_platform_data *pdata;
> - struct regmap *regmap;
> - struct mutex lock;
> -
> - unsigned int last_flag;
> -};
> -
> -/* indicator pattern */
> -static struct indicator indicator_pattern[INDIC_PATTERN_SIZE] = {
> - [0] = {(INDIC_N_BLANK_1 << INDIC_N_BLANK_SHIFT)
> - | PULSE_TIME_32_MS, INDIC_PERIOD_1},
> - [1] = {(INDIC_N_BLANK_15 << INDIC_N_BLANK_SHIFT)
> - | PULSE_TIME_32_MS, INDIC_PERIOD_2},
> - [2] = {(INDIC_N_BLANK_10 << INDIC_N_BLANK_SHIFT)
> - | PULSE_TIME_32_MS, INDIC_PERIOD_4},
> - [3] = {(INDIC_N_BLANK_5 << INDIC_N_BLANK_SHIFT)
> - | PULSE_TIME_32_MS, INDIC_PERIOD_7},
> -};
> -
> -/* chip initialize */
> -static int __devinit lm3556_chip_init(struct lm3556_chip_data *chip)
> -{
> - unsigned int reg_val;
> - int ret;
> - struct lm3556_platform_data *pdata = chip->pdata;
> -
> - /* set config register */
> - ret = regmap_read(chip->regmap, REG_CONF, ®_val);
> - if (ret < 0) {
> - dev_err(chip->dev, "Failed to read REG_CONF Register\n");
> - goto out;
> - }
> -
> - reg_val &= (~EX_PIN_CONTROL_MASK);
> - reg_val |= ((pdata->torch_pin_polarity & 0x01)
> - << TORCH_PIN_POLARITY_SHIFT);
> - reg_val |= ((pdata->strobe_usuage & 0x01) << STROBE_USUAGE_SHIFT);
> - reg_val |= ((pdata->strobe_pin_polarity & 0x01)
> - << STROBE_PIN_POLARITY_SHIFT);
> - reg_val |= ((pdata->tx_pin_polarity & 0x01) << TX_PIN_POLARITY_SHIFT);
> - reg_val |= ((pdata->indicator_mode & 0x01) << INDIC_MODE_SHIFT);
> -
> - ret = regmap_write(chip->regmap, REG_CONF, reg_val);
> - if (ret < 0) {
> - dev_err(chip->dev, "Failed to write REG_CONF Regisgter\n");
> - goto out;
> - }
> -
> - /* set enable register */
> - ret = regmap_read(chip->regmap, REG_ENABLE, ®_val);
> - if (ret < 0) {
> - dev_err(chip->dev, "Failed to read REG_ENABLE Register\n");
> - goto out;
> - }
> -
> - reg_val &= (~EX_PIN_ENABLE_MASK);
> - reg_val |= ((pdata->torch_pin_en & 0x01) << TORCH_PIN_EN_SHIFT);
> - reg_val |= ((pdata->strobe_pin_en & 0x01) << STROBE_PIN_EN_SHIFT);
> - reg_val |= ((pdata->tx_pin_en & 0x01) << TX_PIN_EN_SHIFT);
> -
> - ret = regmap_write(chip->regmap, REG_ENABLE, reg_val);
> - if (ret < 0) {
> - dev_err(chip->dev, "Failed to write REG_ENABLE Regisgter\n");
> - goto out;
> - }
> -
> -out:
> - return ret;
> -}
> -
> -/* chip control */
> -static int lm3556_control(struct lm3556_chip_data *chip,
> - u8 brightness, enum lm3556_mode opmode)
> -{
> - int ret;
> - struct lm3556_platform_data *pdata = chip->pdata;
> -
> - ret = regmap_read(chip->regmap, REG_FLAG, &chip->last_flag);
> - if (ret < 0) {
> - dev_err(chip->dev, "Failed to read REG_FLAG Register\n");
> - goto out;
> - }
> -
> - if (chip->last_flag)
> - dev_info(chip->dev, "Last FLAG is 0x%x\n", chip->last_flag);
> -
> - /* brightness 0 means off-state */
> - if (!brightness)
> - opmode = MODES_STASNDBY;
> -
> - switch (opmode) {
> - case MODES_TORCH:
> - ret = regmap_update_bits(chip->regmap, REG_I_CTRL,
> - TORCH_I_MASK << TORCH_I_SHIFT,
> - (brightness - 1) << TORCH_I_SHIFT);
> -
> - if (pdata->torch_pin_en)
> - opmode |= (TORCH_PIN_EN_MASK << TORCH_PIN_EN_SHIFT);
> - break;
> -
> - case MODES_FLASH:
> - ret = regmap_update_bits(chip->regmap, REG_I_CTRL,
> - FLASH_I_MASK << FLASH_I_SHIFT,
> - (brightness - 1) << FLASH_I_SHIFT);
> - break;
> -
> - case MODES_INDIC:
> - ret = regmap_update_bits(chip->regmap, REG_I_CTRL,
> - TORCH_I_MASK << TORCH_I_SHIFT,
> - (brightness - 1) << TORCH_I_SHIFT);
> - break;
> -
> - case MODES_STASNDBY:
> - if (pdata->torch_pin_en)
> - opmode |= (TORCH_PIN_EN_MASK << TORCH_PIN_EN_SHIFT);
> - break;
> -
> - default:
> - return ret;
> - }
> - if (ret < 0) {
> - dev_err(chip->dev, "Failed to write REG_I_CTRL Register\n");
> - goto out;
> - }
> - ret = regmap_update_bits(chip->regmap, REG_ENABLE,
> - MODE_BITS_MASK << MODE_BITS_SHIFT,
> - opmode << MODE_BITS_SHIFT);
> -
> -out:
> - return ret;
> -}
> -
> -/* torch */
> -static void lm3556_torch_brightness_set(struct led_classdev *cdev,
> - enum led_brightness brightness)
> -{
> - struct lm3556_chip_data *chip =
> - container_of(cdev, struct lm3556_chip_data, cdev_torch);
> -
> - mutex_lock(&chip->lock);
> - lm3556_control(chip, brightness, MODES_TORCH);
> - mutex_unlock(&chip->lock);
> -}
> -
> -/* flash */
> -static void lm3556_strobe_brightness_set(struct led_classdev *cdev,
> - enum led_brightness brightness)
> -{
> - struct lm3556_chip_data *chip =
> - container_of(cdev, struct lm3556_chip_data, cdev_flash);
> -
> - mutex_lock(&chip->lock);
> - lm3556_control(chip, brightness, MODES_FLASH);
> - mutex_unlock(&chip->lock);
> -}
> -
> -/* indicator */
> -static void lm3556_indicator_brightness_set(struct led_classdev *cdev,
> - enum led_brightness brightness)
> -{
> - struct lm3556_chip_data *chip =
> - container_of(cdev, struct lm3556_chip_data, cdev_indicator);
> -
> - mutex_lock(&chip->lock);
> - lm3556_control(chip, brightness, MODES_INDIC);
> - mutex_unlock(&chip->lock);
> -}
> -
> -/* indicator pattern */
> -static ssize_t lm3556_indicator_pattern_store(struct device *dev,
> - struct device_attribute *devAttr,
> - const char *buf, size_t size)
> -{
> - ssize_t ret;
> - struct led_classdev *led_cdev = dev_get_drvdata(dev);
> - struct lm3556_chip_data *chip =
> - container_of(led_cdev, struct lm3556_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, REG_INDIC_BLINK,
> - indicator_pattern[state].blinking);
> - if (ret < 0) {
> - dev_err(chip->dev, "Failed to write REG_ENABLE Regisgter\n");
> - goto out;
> - }
> -
> - ret = regmap_write(chip->regmap, REG_INDIC_PERIOD,
> - indicator_pattern[state].period_cnt);
> - if (ret < 0) {
> - dev_err(chip->dev, "Failed to write REG_ENABLE Regisgter\n");
> - goto out;
> - }
> -
> - return size;
> -out:
> - dev_err(chip->dev, "Indicator pattern doesn't saved\n");
> - return size;
> -}
> -
> -static DEVICE_ATTR(pattern, 0666, NULL, lm3556_indicator_pattern_store);
> -
> -static const struct regmap_config lm3556_regmap = {
> - .reg_bits = 8,
> - .val_bits = 8,
> - .max_register = REG_MAX,
> -};
> -
> -/* module initialize */
> -static int __devinit lm3556_probe(struct i2c_client *client,
> - const struct i2c_device_id *id)
> -{
> - struct lm3556_platform_data *pdata = client->dev.platform_data;
> - struct lm3556_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 lm3556_chip_data),
> - GFP_KERNEL);
> - if (!chip)
> - return -ENOMEM;
> -
> - chip->dev = &client->dev;
> - chip->pdata = pdata;
> -
> - chip->regmap = devm_regmap_init_i2c(client, &lm3556_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 = lm3556_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 = lm3556_strobe_brightness_set;
> - err = led_classdev_register((struct device *)
> - &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 = lm3556_torch_brightness_set;
> - err = led_classdev_register((struct device *)
> - &client->dev, &chip->cdev_torch);
> - if (err < 0)
> - goto err_create_torch_file;
> - /* indicator */
> - chip->cdev_indicator.name = "indicator";
> - chip->cdev_indicator.max_brightness = 8;
> - chip->cdev_indicator.brightness_set = lm3556_indicator_brightness_set;
> - err = led_classdev_register((struct device *)
> - &client->dev, &chip->cdev_indicator);
> - if (err < 0)
> - goto err_create_indicator_file;
> -
> - err = device_create_file(chip->cdev_indicator.dev, &dev_attr_pattern);
> - if (err < 0)
> - goto err_create_pattern_file;
> -
> - dev_info(&client->dev, "LM3556 is initialized\n");
> - return 0;
> -
> -err_create_pattern_file:
> - led_classdev_unregister(&chip->cdev_indicator);
> -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 __devexit lm3556_remove(struct i2c_client *client)
> -{
> - struct lm3556_chip_data *chip = i2c_get_clientdata(client);
> -
> - device_remove_file(chip->cdev_indicator.dev, &dev_attr_pattern);
> - led_classdev_unregister(&chip->cdev_indicator);
> - led_classdev_unregister(&chip->cdev_torch);
> - led_classdev_unregister(&chip->cdev_flash);
> - regmap_write(chip->regmap, REG_ENABLE, 0);
> - return 0;
> -}
> -
> -static const struct i2c_device_id lm3556_id[] = {
> - {LM3556_NAME, 0},
> - {}
> -};
> -
> -MODULE_DEVICE_TABLE(i2c, lm3556_id);
> -
> -static struct i2c_driver lm3556_i2c_driver = {
> - .driver = {
> - .name = LM3556_NAME,
> - .owner = THIS_MODULE,
> - .pm = NULL,
> - },
> - .probe = lm3556_probe,
> - .remove = __devexit_p(lm3556_remove),
> - .id_table = lm3556_id,
> -};
> -
> -module_i2c_driver(lm3556_i2c_driver);
> -
> -MODULE_DESCRIPTION("Texas Instruments Flash Lighting driver for LM3556");
> -MODULE_AUTHOR("Daniel Jeong <daniel.jeong@...com>");
> -MODULE_AUTHOR("G.Shark Jeong <gshark.jeong@...il.com>");
> -MODULE_LICENSE("GPL v2");
> diff --git a/drivers/leds/leds-lm355x.c b/drivers/leds/leds-lm355x.c
> new file mode 100644
> index 0000000..cbb94d8
> --- /dev/null
> +++ b/drivers/leds/leds-lm355x.c
> @@ -0,0 +1,574 @@
> +/*
> +* Simple driver for Texas Instruments LM355x LED Flash driver chip
> +* Copyright (C) 2012 Texas Instruments
> +*
> +* This program is free software; you can redistribute it and/or modify
> +* it under the terms of the GNU General Public License version 2 as
> +* published by the Free Software Foundation.
> +*/
> +
> +#include <linux/module.h>
> +#include <linux/delay.h>
> +#include <linux/i2c.h>
> +#include <linux/gpio.h>
> +#include <linux/leds.h>
> +#include <linux/slab.h>
> +#include <linux/platform_device.h>
> +#include <linux/fs.h>
> +#include <linux/regmap.h>
> +#include <linux/workqueue.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 work_struct work_flash;
> + struct work_struct work_torch;
> + struct work_struct work_indicator;
> +
> + u8 br_flash;
> + u8 br_torch;
> + u8 br_indicator;
> +
> + struct workqueue_struct *wqueue;
I don't think we need to create a specific work_queue for this driver,
system work_queue is good enough for our usage.
> +
> + 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 __devinit 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 = pdata->pin_tx2 | pdata->ntc_pin;
> + ret = regmap_update_bits(chip->regmap, 0xE0, 0x28, reg_val);
> + if (ret < 0)
> + goto out;
> + reg_val = pdata->pass_mode;
> + ret = regmap_update_bits(chip->regmap, 0xA0, 0x04, reg_val);
> + if (ret < 0)
> + goto out;
> + break;
> +
> + case CHIP_LM3556:
> + reg_val = pdata->pin_tx2 | pdata->ntc_pin | 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 void 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;
> + }
> + /* 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;
> +out:
> + dev_err(chip->dev, "%s:i2c access fail to register\n", __func__);
> + return;
> +}
> +
> +/* torch */
> +static void lm355x_deferred_torch_brightness_set(struct work_struct *work)
> +{
> + struct lm355x_chip_data *chip =
> + container_of(work, struct lm355x_chip_data, work_torch);
> +
> + mutex_lock(&chip->lock);
> + lm355x_control(chip, chip->br_torch, MODE_TORCH);
> + mutex_unlock(&chip->lock);
> +}
> +
> +static void 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);
> +
> + chip->br_torch = brightness;
> + queue_work(chip->wqueue, &chip->work_torch);
just schedule_work(chip->work_torch);
> +}
> +
> +/* flash */
> +static void lm355x_deferred_strobe_brightness_set(struct work_struct *work)
> +{
> + struct lm355x_chip_data *chip =
> + container_of(work, struct lm355x_chip_data, work_flash);
> +
> + mutex_lock(&chip->lock);
> + lm355x_control(chip, chip->br_flash, MODE_FLASH);
> + mutex_unlock(&chip->lock);
> +}
> +
> +static void 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);
> +
> + chip->br_flash = brightness;
> + queue_work(chip->wqueue, &chip->work_flash);
ditto;
> +}
> +
> +/* indicator */
> +static void lm355x_deferred_indicator_brightness_set(struct work_struct *work)
> +{
> + struct lm355x_chip_data *chip =
> + container_of(work, struct lm355x_chip_data, work_indicator);
> +
> + mutex_lock(&chip->lock);
> + lm355x_control(chip, chip->br_indicator, MODE_INDIC);
> + mutex_unlock(&chip->lock);
> +}
> +
> +static void 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);
> +
> + chip->br_indicator = brightness;
> + queue_work(chip->wqueue, &chip->work_indicator);
ditto;
> +}
> +
> +/* indicator pattern only for lm3556*/
> +static ssize_t lm3556_indicator_pattern_store(struct device *dev,
> + struct device_attribute *devAttr,
> + 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 size;
> +}
> +
> +static DEVICE_ATTR(pattern, 0666, NULL, lm3556_indicator_pattern_store);
> +
> +static const struct regmap_config lm355x_regmap = {
> + .reg_bits = 8,
> + .val_bits = 8,
> + .max_register = 0xFF,
> +};
> +
> +/* module initialize */
> +static int __devinit lm355x_probe(struct i2c_client *client,
> + const struct i2c_device_id *id)
> +{
> + struct lm355x_platform_data *pdata = client->dev.platform_data;
> + 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->wqueue = create_singlethread_workqueue("lm355x_workqueue");
> + if (!chip->wqueue)
> + return -ENOMEM;
no need to create a new workqueue.
> + 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 */
> + INIT_WORK(&chip->work_flash, lm355x_deferred_strobe_brightness_set);
> + chip->cdev_flash.name = "flash";
> + chip->cdev_flash.max_brightness = 16;
> + chip->cdev_flash.brightness_set = lm355x_strobe_brightness_set;
> + err = led_classdev_register((struct device *)
> + &client->dev, &chip->cdev_flash);
> + if (err < 0)
> + goto err_out;
> + /* torch */
> + INIT_WORK(&chip->work_torch, lm355x_deferred_torch_brightness_set);
> + chip->cdev_torch.name = "torch";
> + chip->cdev_torch.max_brightness = 8;
> + chip->cdev_torch.brightness_set = lm355x_torch_brightness_set;
> + err = led_classdev_register((struct device *)
> + &client->dev, &chip->cdev_torch);
> + if (err < 0)
> + goto err_create_torch_file;
> + /* indicator */
> + INIT_WORK(&chip->work_indicator,
> + lm355x_deferred_indicator_brightness_set);
> + 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 = lm355x_indicator_brightness_set;
> + err = led_classdev_register((struct device *)
> + &client->dev, &chip->cdev_indicator);
> + if (err < 0)
> + goto err_create_indicator_file;
> + /* indicator pattern control only for LM3554 */
> + if (id->driver_data == CHIP_LM3556) {
> + err =
> + device_create_file(chip->cdev_indicator.dev,
> + &dev_attr_pattern);
> + if (err < 0)
> + goto err_create_pattern_file;
> + }
> +
> + dev_info(&client->dev, "%s is initialized\n",
> + lm355x_name[id->driver_data]);
> + return 0;
> +
> +err_create_pattern_file:
> + led_classdev_unregister(&chip->cdev_indicator);
> +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 __devexit lm355x_remove(struct i2c_client *client)
> +{
> + struct lm355x_chip_data *chip = i2c_get_clientdata(client);
> + struct lm355x_reg_data *preg = chip->regs;
> + flush_workqueue(chip->wqueue);
use flush_work();
> + regmap_write(chip->regmap, preg[REG_OPMODE].regno, 0);
> + if (chip->type == CHIP_LM3556)
> + device_remove_file(chip->cdev_indicator.dev, &dev_attr_pattern);
> + led_classdev_unregister(&chip->cdev_indicator);
> + led_classdev_unregister(&chip->cdev_torch);
> + led_classdev_unregister(&chip->cdev_flash);
> + destroy_workqueue(chip->wqueue);
> + 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,
> + .owner = THIS_MODULE,
> + .pm = NULL,
> + },
> + .probe = lm355x_probe,
> + .remove = __devexit_p(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@...com>");
> +MODULE_AUTHOR("G.Shark Jeong <gshark.jeong@...il.com>");
> +MODULE_LICENSE("GPL v2");
> diff --git a/include/linux/platform_data/leds-lm3556.h b/include/linux/platform_data/leds-lm3556.h
> deleted file mode 100644
> index 4b4e7d6..0000000
> --- a/include/linux/platform_data/leds-lm3556.h
> +++ /dev/null
> @@ -1,50 +0,0 @@
> -/*
> - * Simple driver for Texas Instruments LM3556 LED Flash driver chip (Rev0x03)
> - * Copyright (C) 2012 Texas Instruments
> - *
> - * This program is free software; you can redistribute it and/or modify
> - * it under the terms of the GNU General Public License version 2 as
> - * published by the Free Software Foundation.
> - *
> - */
> -
> -#ifndef __LINUX_LM3556_H
> -#define __LINUX_LM3556_H
> -
> -#define LM3556_NAME "leds-lm3556"
> -
> -enum lm3556_pin_polarity {
> - PIN_LOW_ACTIVE = 0,
> - PIN_HIGH_ACTIVE,
> -};
> -
> -enum lm3556_pin_enable {
> - PIN_DISABLED = 0,
> - PIN_ENABLED,
> -};
> -
> -enum lm3556_strobe_usuage {
> - STROBE_EDGE_DETECT = 0,
> - STROBE_LEVEL_DETECT,
> -};
> -
> -enum lm3556_indic_mode {
> - INDIC_MODE_INTERNAL = 0,
> - INDIC_MODE_EXTERNAL,
> -};
> -
> -struct lm3556_platform_data {
> - enum lm3556_pin_enable torch_pin_en;
> - enum lm3556_pin_polarity torch_pin_polarity;
> -
> - enum lm3556_strobe_usuage strobe_usuage;
> - enum lm3556_pin_enable strobe_pin_en;
> - enum lm3556_pin_polarity strobe_pin_polarity;
> -
> - enum lm3556_pin_enable tx_pin_en;
> - enum lm3556_pin_polarity tx_pin_polarity;
> -
> - enum lm3556_indic_mode indicator_mode;
> -};
> -
> -#endif /* __LINUX_LM3556_H */
> diff --git a/include/linux/platform_data/leds-lm355x.h b/include/linux/platform_data/leds-lm355x.h
> new file mode 100644
> index 0000000..b88724b
> --- /dev/null
> +++ b/include/linux/platform_data/leds-lm355x.h
> @@ -0,0 +1,66 @@
> +/*
> + * Copyright (C) 2012 Texas Instruments
> + *
> + * License Terms: GNU General Public License v2
> + *
> + * Simple driver for Texas Instruments LM355x LED driver chip
> + *
> + * Author: G.Shark Jeong <gshark.jeong@...il.com>
> + * Daniel Jeong <daniel.jeong@...com>
> + */
> +
> +#define LM355x_NAME "leds-lm355x"
> +#define LM3554_NAME "leds-lm3554"
> +#define LM3556_NAME "leds-lm3556"
> +
> +/* lm3554 : strobe def. on */
> +enum lm355x_strobe {
> + LM355x_PIN_STROBE_DISABLE = 0x00,
> + LM355x_PIN_STROBE_ENABLE = 0x01,
> +};
> +
> +enum lm355x_torch {
> + LM355x_PIN_TORCH_DISABLE = 0,
> + LM3554_PIN_TORCH_ENABLE = 0x80,
> + LM3556_PIN_TORCH_ENABLE = 0x10,
> +};
> +
> +enum lm355x_tx2 {
> + LM355x_PIN_TX_DISABLE = 0,
> + LM3554_PIN_TX_ENABLE = 0x20,
> + LM3556_PIN_TX_ENABLE = 0x40,
> +};
> +
> +enum lm355x_ntc {
> + LM355x_PIN_NTC_DISABLE = 0,
> + LM3554_PIN_NTC_ENABLE = 0x08,
> + LM3556_PIN_NTC_ENABLE = 0x80,
> +};
> +
> +enum lm355x_pmode {
> + LM355x_PMODE_DISABLE = 0,
> + LM355x_PMODE_ENABLE = 0x04,
> +};
> +
> +/*
> + * struct lm3554_platform_data
> + * @pin_strobe: strobe input
> + * @pin_torch : input pin
> + * lm3554-tx1/torch/gpio1
> + * lm3556-torch
> + * @pin_tx2 : input pin
> + * lm3554-envm/tx2/gpio2
> + * lm3556-tx pin
> + * @ntc_pin : output pin
> + * lm3554-ledi/ntc
> + * lm3556-temp pin
> + * @pass_mode : pass mode
> + */
> +struct lm355x_platform_data {
> + enum lm355x_strobe pin_strobe;
> + enum lm355x_torch pin_tx1;
> + enum lm355x_tx2 pin_tx2;
> + enum lm355x_ntc ntc_pin;
> +
> + enum lm355x_pmode pass_mode;
> +};
> --
> 1.7.5.4
>
--
Bryan Wu <bryan.wu@...onical.com>
Kernel Developer +86.186-168-78255 Mobile
Canonical Ltd. www.canonical.com
Ubuntu - Linux for human beings | www.ubuntu.com
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