summaryrefslogtreecommitdiff
path: root/drivers/leds/leds-lm3556.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/leds/leds-lm3556.c')
-rw-r--r--drivers/leds/leds-lm3556.c512
1 files changed, 0 insertions, 512 deletions
diff --git a/drivers/leds/leds-lm3556.c b/drivers/leds/leds-lm3556.c
deleted file mode 100644
index 3062abd9a53..00000000000
--- 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, &reg_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, &reg_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@ti.com>");
-MODULE_AUTHOR("G.Shark Jeong <gshark.jeong@gmail.com>");
-MODULE_LICENSE("GPL v2");
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-26 05:41:22 +0000