Re: [PATCH 1/1 v2] leds: Add LED driver for lm3556 chip

From: Bryan Wu
Date: Mon Jun 04 2012 - 05:49:41 EST


Hi G.Shark,

Mostly of this driver looks fine to me, please find some comments below.

On Thu, May 31, 2012 at 4:03 PM, G.Shark Jeong <gshark.jeong@xxxxxxxxx> wrote:
> From: "G.Shark Jeong" <gshark.jeong@xxxxxxxxx>
>
> 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
> Tested on OMAP4430 and SPC110
>
> Signed-off-by: G.Shark Jeong <gshark.jeong@xxxxxxxxx>
> ---
>  drivers/leds/Kconfig        |    7 +
>  drivers/leds/Makefile       |    1 +
>  drivers/leds/leds-lm3556.c  |  463 +++++++++++++++++++++++++++++++++++++++++++
>  include/linux/leds-lm3556.h |  242 ++++++++++++++++++++++
>  4 files changed, 713 insertions(+), 0 deletions(-)
>  create mode 100644 drivers/leds/leds-lm3556.c
>  create mode 100644 include/linux/leds-lm3556.h
>
> diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
> index 04cb8c8..a5f3e00 100644
> --- a/drivers/leds/Kconfig
> +++ b/drivers/leds/Kconfig
> @@ -415,6 +415,13 @@ 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"
> +       depends on LEDS_CLASS && I2C
> +       help
> +         This option enables support for LEDs connected LM3556.
> +         LM3556 includes Torch, Flash and Indicator functions.
> +
>  config LEDS_OT200
>        tristate "LED support for the Bachmann OT200"
>        depends on LEDS_CLASS && HAS_IOMEM
> diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
> index f8958cd..2d69a86 100644
> --- a/drivers/leds/Makefile
> +++ b/drivers/leds/Makefile
> @@ -47,6 +47,7 @@ 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-$(CONFIG_LEDS_LM3556)              += leds-lm3556.o
>
>  # LED SPI Drivers
>  obj-$(CONFIG_LEDS_DAC124S085)          += leds-dac124s085.o
> diff --git a/drivers/leds/leds-lm3556.c b/drivers/leds/leds-lm3556.c
> new file mode 100644
> index 0000000..fe8ae1e
> --- /dev/null
> +++ b/drivers/leds/leds-lm3556.c
> @@ -0,0 +1,463 @@
> +/*
> + * 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.
> + *
> + */
> +#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/leds-lm3556.h>

We are consolidating this kind of header files. Please split some
definitions into C file, put platform_data related stuff in a header
file and move this header file into include/linux/platform_data/.

> +
> +#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                                (0xC)
> +
> +#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)
> +
> +#define INDIC_PATTERN_SIZE 4
> +
> +struct indicator {
> +       u8 blinking;
> +       u8 period_cnt;
> +};
> +
> +struct lm3556_chip_data {
> +       struct i2c_client *client;
> +
> +       struct led_classdev cdev_flash;
> +       struct led_classdev cdev_torch;
> +       struct led_classdev cdev_indicator;
> +
> +       struct lm3556_platform_data *pdata;
> +       struct regmap *regmap;
> +
> +       unsigned int last_flag;
> +};
> +
> +/*Indicator Pattern*/
Coding style issue, you'd better place blank after '/* and before
'*/'. Same for others.

> +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 lm3556_chip_init(struct lm3556_chip_data *chip)
> +{
> +       unsigned int reg_val;
> +       int ret;
> +       struct i2c_client *client = chip->client;
> +       struct lm3556_platform_data *pdata = chip->pdata;
> +
> +       /*set config register */
> +       ret = regmap_read(chip->regmap, REG_CONF, &reg_val);
> +       if (ret < 0) {
> +               dev_err(&client->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(&client->dev, "Failed to write REG_CONF Regisgter\n");
> +               goto out;
> +       }
> +
> +       /*set enable register */
> +       ret = regmap_read(chip->regmap, REG_ENABLE, &reg_val);
> +       if (ret < 0) {
> +               dev_err(&client->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(&client->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 i2c_client *client = chip->client;
> +       struct lm3556_platform_data *pdata = chip->pdata;
> +
> +       ret = regmap_read(chip->regmap, REG_FLAG, &chip->last_flag);
> +       if (ret < 0) {
> +               dev_err(&client->dev, "Failed to read REG_FLAG Register\n");
> +               goto out;
> +       }
> +
> +       if (chip->last_flag)
> +               dev_info(&client->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(&client->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;
> +}
> +

For following functions I think we might need a lock to protect
lm3556_control().

> +/*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);
> +
> +       lm3556_control(chip, brightness, MODES_TORCH);
> +       return;
> +}
> +
> +/* 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);
> +
> +       lm3556_control(chip, brightness, MODES_FLASH);
> +       return;
> +}
> +
> +/* 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);
> +
> +       lm3556_control(chip, brightness, MODES_INDIC);
> +       return;
> +}
> +
> +static ssize_t lm3556_indicator_pattern_store(struct device *dev,
> +                                             struct device_attribute *devAttr,
> +                                             const char *buf, size_t size)
> +{
> +       ssize_t ret;
> +       struct i2c_client *client = container_of(dev->parent,
> +                                                struct i2c_client, dev);
> +       struct lm3556_chip_data *chip = i2c_get_clientdata(client);
> +       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(&client->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(&client->dev, "Failed to write REG_ENABLE Regisgter\n");
> +               goto out;
> +       }
> +
> +       return size;
> +out:
> +       dev_err(&client->dev, "Indicator pattern doesn't saved\n");
> +       return size;
> +}
> +
> +static DEVICE_ATTR(pattern, 0666, NULL, lm3556_indicator_pattern_store);
> +

Looks like you export an interface in /sysfs, could you add some
comments or document about that?

> +static const struct regmap_config lm3556_regmap = {
> +       .reg_bits = 8,
> +       .val_bits = 8,
> +};
> +
> +/* Module Initialize */
> +static int 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->client = client;
> +       chip->pdata = pdata;
> +
> +       chip->regmap = 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;
> +       }
> +
> +       i2c_set_clientdata(client, chip);
> +
> +       err = lm3556_chip_init(chip);
> +       if (err < 0)
> +               goto err_chip_init;
> +
> +       /*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_create_flash_file;
> +       /*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;
> +
> +       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_create_flash_file:
> +err_chip_init:
> +       i2c_set_clientdata(client, NULL);
> +       return err;
> +}
> +
> +static int 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);
> +       regmap_exit(chip->regmap);
> +       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,
> +};
> +
> +static int __init lm3556_init(void)
> +{
> +       return i2c_add_driver(&lm3556_i2c_driver);
> +}
> +
> +static void __exit lm3556_exit(void)
> +{
> +       i2c_del_driver(&lm3556_i2c_driver);
> +}
> +
> +module_init(lm3556_init);
> +module_exit(lm3556_exit);
> +
> +MODULE_DESCRIPTION("Texas Instruments Flash Lighting driver for LM3556");
> +MODULE_AUTHOR("Daniel Jeong <daniel.jeong@xxxxxx>");
> +MODULE_AUTHOR("G.Shark Jeong <gshark.jeong@xxxxxxxxx>");
> +MODULE_LICENSE("GPL v2");
> diff --git a/include/linux/leds-lm3556.h b/include/linux/leds-lm3556.h
> new file mode 100644
> index 0000000..115ee65
> --- /dev/null
> +++ b/include/linux/leds-lm3556.h
> @@ -0,0 +1,242 @@
> +/*
> + * 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_ivfm_filter_time {
> +       IVFM_FILTER_TIME_HALF_CURRENT_STEP = 0,
> +       IVFM_FILTER_TIME_256_USEC,
> +       IVFM_FILTER_TIME_512_USEC,
> +       IVFM_FILTER_TIME_1024_USEC
> +};
> +
> +enum lm3556_ivfm_adj_mode {
> +       IVFM_ADJ_MODE_REPORT = 0,
> +       IVFM_ADJ_MODESTOP_HOLD,
> +       IVFM_ADJ_MODE_DOWN,
> +       IVFM_ADJ_MODE_UP_DOWN,
> +};
> +
> +enum lm3556_ivfm_down_threshold {
> +       IVFM_DN_TH_2_7_V = 0,
> +       IVFM_DN_TH_2_8_V,
> +       IVFM_DN_TH_2_9_V,
> +       IVFM_DN_TH_3_0_V,
> +       IVFM_DN_TH_3_1_V,
> +       IVFM_DN_TH_3_2_V,
> +       IVFM_DN_TH_3_3_V,
> +       IVFM_DN_TH_3_4_V,
> +};
> +
> +enum lm3556_ivfm_hyst {
> +       IVFM_HYST_50_MV = 0,
> +       IVFM_HYST_100_MV,
> +       IVFM_HYST_150_MV,
> +       IVFM_HYST_DIS
> +};
> +
> +enum lm3556_ntc_curr_lvl {
> +       NTC_CURR_LVL_25_UA = 0,
> +       NTC_CURR_LVL_50_UA,
> +       NTC_CURR_LVL_75_UA,
> +       NTC_CURR_LVL_100_UA
> +};
> +
> +enum lm3556_ntc_trip_threshold {
> +       NTC_TRIP_THRESHOLD_200_MV = 0,
> +       NTC_TRIP_THRESHOLD_300_MV,
> +       NTC_TRIP_THRESHOLD_400_MV,
> +       NTC_TRIP_THRESHOLD_500_MV,
> +       NTC_TRIP_THRESHOLD_600_MV,
> +       NTC_TRIP_THRESHOLD_700_MV,
> +       NTC_TRIP_THRESHOLD_800_MV,
> +       NTC_TRIP_THRESHOLD_900_MV
> +};
> +
> +enum lm3556_ntc_event_lvl {
> +       NTC_EVENT_LVL_STANDBY = 0,
> +       NTC_EVENT_LVL_REDUCE_MIN_TORCH
> +};
> +
> +enum lm3556_torch_indic_ramp_time {
> +       TORCH_INDIC_RAMP_TIME_16_MS = 0,
> +       TORCH_INDIC_RAMP_TIME_32_MS,
> +       TORCH_INDIC_RAMP_TIME_64_MS,
> +       TORCH_INDIC_RAMP_TIME_128_MS,
> +       TORCH_INDIC_RAMP_TIME_256_MS,
> +       TORCH_INDIC_RAMP_TIME_512_MS,
> +       TORCH_INDIC_RAMP_TIME_1024_MS,
> +       TORCH_INDIC_RAMP_TIME_2048_MS,
> +};
> +
> +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_indic_mode {
> +       INDIC_MODE_INTERNAL = 0,
> +       INDIC_MODE_EXTERNAL,
> +};
> +
> +enum lm3556_flash_timeout {
> +       FLASH_TIMEOUT_50_MS = 0,
> +       FLASH_TIMEOUT_100_MS,
> +       FLASH_TIMEOUT_150_MS,
> +       FLASH_TIMEOUT_200_MS,
> +       FLASH_TIMEOUT_250_MS,
> +       FLASH_TIMEOUT_300_MS,
> +       FLASH_TIMEOUT_350_MS,
> +       FLASH_TIMEOUT_400_MS,
> +};
> +
> +enum lm3556_flash_ramp_time {
> +       FLASH_RAMP_TIME_256_US = 0,
> +       FLASH_RAMP_TIME_512_US,
> +       FLASH_RAMP_TIME_1024_US,
> +       FLASH_RAMP_TIME_2048_US,
> +       FLASH_RAMP_TIME_4096_US,
> +       FLASH_RAMP_TIME_8192_US,
> +       FLASH_RAMP_TIME_16384_US,
> +       FLASH_RAMP_TIME_32768_US,
> +};
> +
> +enum lm3556_inductor_current_limit {
> +       INDIC_I_LIMIT_1500_MA = 0,
> +       INDIC_I_LIMIT_2000_MA,
> +       INDIC_I_LIMIT_2500_MA,
> +       INDIC_I_LIMIT_3000_MA
> +};
> +
> +enum lm3556_flash_current {
> +       FLASH_I_93750_UA = 0,
> +       FLASH_I_187500_UA,
> +       FLASH_I_281250_UA,
> +       FLASH_I_375000_UA,
> +       FLASH_I_468750_UA,
> +       FLASH_I_562500_UA,
> +       FLASH_I_656250_UA,
> +       FLASH_I_750000_UA,
> +       FLASH_I_843750_UA,
> +       FLASH_I_937500_UA,
> +       FLASH_I_1031250_UA,
> +       FLASH_I_1125000_UA,
> +       FLASH_I_1218750_UA,
> +       FLASH_I_1312500_UA,
> +       FLASH_I_1406250_UA,
> +       FLASH_I_1500000_UA,
> +
> +};
> +
> +enum lm3556_torch_current {
> +       TORCH_I_46880_UA = 0,
> +       TORCH_I_93750_UA,
> +       TORCH_I_1406300_UA,
> +       TORCH_I_187500_UA,
> +       TORCH_I_234380_UA,
> +       TORCH_I_281250_UA,
> +       TORCH_I_328130_UA,
> +       TORCH_I_375000_UA,
> +};
> +
> +enum lm3556_mode {
> +       MODES_STASNDBY = 0,
> +       MODES_INDIC,
> +       MODES_TORCH,
> +       MODES_FLASH
> +};
> +
> +enum lm3556_pass_mode {
> +       PASS_MODE_NORMAL = 0,
> +       PASS_MODE_PASS_ONLY
> +};
> +
> +enum lm3556_prechg_mode {
> +       PRE_CHARGE_MODE_NORMAL = 0,
> +       PRE_CHARGE_MODE_PRE_CHARGE
> +};
> +
> +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,
> +};
> +
> +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 */
> --
> 1.7.5.4
>



--
Bryan Wu <bryan.wu@xxxxxxxxxxxxx>
Kernel Developer    +86.186-168-78255 Mobile
Canonical Ltd.      www.canonical.com
Ubuntu - Linux for human beings | www.ubuntu.com
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