[PATCH] backlight-lm3630-apply chip revision

From: daniel jeong
Date: Fri Jul 19 2013 - 06:50:29 EST

The TI LM3630 chip was revised and chip name was also changed to LM3630A.
And register map, default values and initial sequences are changed.
www.ti.com

Signed-off-by: daniel jeong <daniel.jeong@xxxxxx>
---
drivers/video/backlight/Kconfig | 4 +-
drivers/video/backlight/lm3630_bl.c | 491 ++++++++++++++++---------------
include/linux/platform_data/lm3630_bl.h | 68 +++--
3 files changed, 293 insertions(+), 270 deletions(-)

diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig
index d5ab658..048e7bd 100644
--- a/drivers/video/backlight/Kconfig
+++ b/drivers/video/backlight/Kconfig
@@ -369,11 +369,11 @@ config BACKLIGHT_AAT2870
backlight driver.

config BACKLIGHT_LM3630
- tristate "Backlight Driver for LM3630"
+ tristate "Backlight Driver for LM3630A"
depends on BACKLIGHT_CLASS_DEVICE && I2C
select REGMAP_I2C
help
- This supports TI LM3630 Backlight Driver
+ This supports TI LM3630A Backlight Driver

config BACKLIGHT_LM3639
tristate "Backlight Driver for LM3639"
diff --git a/drivers/video/backlight/lm3630_bl.c b/drivers/video/backlight/lm3630_bl.c
index 76a62e9..0e9d4e7 100644
--- a/drivers/video/backlight/lm3630_bl.c
+++ b/drivers/video/backlight/lm3630_bl.c
@@ -1,5 +1,5 @@
/*
-* Simple driver for Texas Instruments LM3630 Backlight driver chip
+* Simple driver for Texas Instruments LM3630A Backlight driver chip
* Copyright (C) 2012 Texas Instruments
*
* This program is free software; you can redistribute it and/or modify
@@ -16,12 +16,16 @@
#include <linux/uaccess.h>
#include <linux/interrupt.h>
#include <linux/regmap.h>
+#include <linux/pwm.h>
#include <linux/platform_data/lm3630_bl.h>

#define REG_CTRL 0x00
+#define REG_BOOST 0x02
#define REG_CONFIG 0x01
#define REG_BRT_A 0x03
#define REG_BRT_B 0x04
+#define REG_I_A 0x05
+#define REG_I_B 0x06
#define REG_INT_STATUS 0x09
#define REG_INT_EN 0x0A
#define REG_FAULT 0x0B
@@ -30,205 +34,211 @@
#define REG_MAX 0x1F

#define INT_DEBOUNCE_MSEC 10
-
-enum lm3630_leds {
- BLED_ALL = 0,
- BLED_1,
- BLED_2
-};
-
-static const char * const bled_name[] = {
- [BLED_ALL] = "lm3630_bled", /*Bank1 controls all string */
- [BLED_1] = "lm3630_bled1", /*Bank1 controls bled1 */
- [BLED_2] = "lm3630_bled2", /*Bank1 or 2 controls bled2 */
-};
-
-struct lm3630_chip_data {
+struct lm3630_chip {
struct device *dev;
struct delayed_work work;
+
int irq;
struct workqueue_struct *irqthread;
struct lm3630_platform_data *pdata;
- struct backlight_device *bled1;
- struct backlight_device *bled2;
+ struct backlight_device *bleda;
+ struct backlight_device *bledb;
struct regmap *regmap;
+ struct pwm_device *pwmd;
};

-/* initialize chip */
-static int lm3630_chip_init(struct lm3630_chip_data *pchip)
+/* i2c access */
+static int lm3630_read(struct lm3630_chip *pchip, unsigned int reg)
{
- int ret;
+ int rval;
unsigned int reg_val;
- struct lm3630_platform_data *pdata = pchip->pdata;
-
- /*pwm control */
- reg_val = ((pdata->pwm_active & 0x01) << 2) | (pdata->pwm_ctrl & 0x03);
- ret = regmap_update_bits(pchip->regmap, REG_CONFIG, 0x07, reg_val);
- if (ret < 0)
- goto out;

- /* bank control */
- reg_val = ((pdata->bank_b_ctrl & 0x01) << 1) |
- (pdata->bank_a_ctrl & 0x07);
- ret = regmap_update_bits(pchip->regmap, REG_CTRL, 0x07, reg_val);
- if (ret < 0)
- goto out;
+ rval = regmap_read(pchip->regmap, reg, &reg_val);
+ if (rval < 0)
+ return rval;
+ return reg_val & 0xFF;
+}

- ret = regmap_update_bits(pchip->regmap, REG_CTRL, 0x80, 0x00);
- if (ret < 0)
- goto out;
+static int lm3630_write(struct lm3630_chip *pchip,
+ unsigned int reg, unsigned int data)
+{
+ return regmap_write(pchip->regmap, reg, data);
+}

- /* set initial brightness */
- if (pdata->bank_a_ctrl != BANK_A_CTRL_DISABLE) {
- ret = regmap_write(pchip->regmap,
- REG_BRT_A, pdata->init_brt_led1);
- if (ret < 0)
- goto out;
- }
+static int lm3630_update(struct lm3630_chip *pchip,
+ unsigned int reg, unsigned int mask, unsigned int data)
+{
+ return regmap_update_bits(pchip->regmap, reg, mask, data);
+}

- if (pdata->bank_b_ctrl != BANK_B_CTRL_DISABLE) {
- ret = regmap_write(pchip->regmap,
- REG_BRT_B, pdata->init_brt_led2);
- if (ret < 0)
- goto out;
- }
- return ret;
+/* initialize chip */
+static int lm3630_chip_init(struct lm3630_chip *pchip)
+{
+ int rval;
+ struct lm3630_platform_data *pdata = pchip->pdata;

-out:
- dev_err(pchip->dev, "i2c failed to access register\n");
- return ret;
+ mdelay(1);
+ /* set Filter Strength Register */
+ rval = lm3630_write(pchip, 0x50, 0x03);
+ /* set Cofig. register */
+ rval |= lm3630_update(pchip, REG_CONFIG, 0x07, pdata->pwm_ctrl);
+ /* set boost control */
+ rval |= lm3630_write(pchip, REG_BOOST, 0x38);
+ /* set current A */
+ rval |= lm3630_update(pchip, REG_I_A, 0x1F, 0x1F);
+ /* set current B */
+ rval |= lm3630_write(pchip, REG_I_B, 0x1F);
+ /* set control */
+ rval |=
+ lm3630_write(pchip, REG_CTRL, pdata->leda_ctrl | pdata->ledb_ctrl);
+ mdelay(1);
+ /* set brightness A and B */
+ rval |= lm3630_write(pchip, REG_BRT_A, pdata->leda_init_brt);
+ rval |= lm3630_write(pchip, REG_BRT_B, pdata->ledb_init_brt);
+
+ if (rval < 0)
+ dev_err(pchip->dev, "i2c failed to access register\n");
+ return rval;
}

/* interrupt handling */
static void lm3630_delayed_func(struct work_struct *work)
{
- int ret;
- unsigned int reg_val;
- struct lm3630_chip_data *pchip;
+ unsigned int rval;
+ struct lm3630_chip *pchip;

- pchip = container_of(work, struct lm3630_chip_data, work.work);
+ pchip = container_of(work, struct lm3630_chip, work.work);

- ret = regmap_read(pchip->regmap, REG_INT_STATUS, &reg_val);
- if (ret < 0) {
+ rval = lm3630_read(pchip, REG_INT_STATUS);
+ if (rval < 0) {
dev_err(pchip->dev,
"i2c failed to access REG_INT_STATUS Register\n");
return;
}

- dev_info(pchip->dev, "REG_INT_STATUS Register is 0x%x\n", reg_val);
+ dev_info(pchip->dev, "REG_INT_STATUS Register is 0x%x\n", rval);
}

static irqreturn_t lm3630_isr_func(int irq, void *chip)
{
- int ret;
- struct lm3630_chip_data *pchip = chip;
+ int rval;
+ struct lm3630_chip *pchip = chip;
unsigned long delay = msecs_to_jiffies(INT_DEBOUNCE_MSEC);

queue_delayed_work(pchip->irqthread, &pchip->work, delay);

- ret = regmap_update_bits(pchip->regmap, REG_CTRL, 0x80, 0x00);
- if (ret < 0)
- goto out;
+ rval = lm3630_update(pchip, REG_CTRL, 0x80, 0x00);
+ if (rval < 0)
+ goto out_i2c_err;

return IRQ_HANDLED;
-out:
+out_i2c_err:
dev_err(pchip->dev, "i2c failed to access register\n");
return IRQ_HANDLED;
}

-static int lm3630_intr_config(struct lm3630_chip_data *pchip)
+static int lm3630_intr_config(struct lm3630_chip *pchip)
{
+ int rval;
+
+ rval = lm3630_write(pchip, REG_INT_EN, 0x87);
+ if (rval < 0)
+ return rval;
+
INIT_DELAYED_WORK(&pchip->work, lm3630_delayed_func);
pchip->irqthread = create_singlethread_workqueue("lm3630-irqthd");
if (!pchip->irqthread) {
- dev_err(pchip->dev, "create irq thread fail...\n");
+ dev_err(pchip->dev, "create irq thread fail\n");
return -1;
}
if (request_threaded_irq
(pchip->irq, NULL, lm3630_isr_func,
IRQF_TRIGGER_FALLING | IRQF_ONESHOT, "lm3630_irq", pchip)) {
- dev_err(pchip->dev, "request threaded irq fail..\n");
+ dev_err(pchip->dev, "request threaded irq fail\n");
return -1;
}
- return 0;
+ return rval;
}

-static bool
-set_intensity(struct backlight_device *bl, struct lm3630_chip_data *pchip)
+static void lm3630_pwm_ctrl(struct lm3630_chip *pchip, int br, int br_max)
{
- if (!pchip->pdata->pwm_set_intensity)
- return false;
- pchip->pdata->pwm_set_intensity(bl->props.brightness - 1,
- pchip->pdata->pwm_period);
- return true;
+ unsigned int period = pwm_get_period(pchip->pwmd);
+ unsigned int duty = br * period / br_max;
+
+ pwm_config(pchip->pwmd, duty, period);
+ if (duty)
+ pwm_enable(pchip->pwmd);
+ else
+ pwm_disable(pchip->pwmd);
}

/* update and get brightness */
static int lm3630_bank_a_update_status(struct backlight_device *bl)
{
int ret;
- struct lm3630_chip_data *pchip = bl_get_data(bl);
+ struct lm3630_chip *pchip = bl_get_data(bl);
enum lm3630_pwm_ctrl pwm_ctrl = pchip->pdata->pwm_ctrl;

- /* brightness 0 means disable */
- if (!bl->props.brightness) {
- ret = regmap_update_bits(pchip->regmap, REG_CTRL, 0x04, 0x00);
- if (ret < 0)
- goto out;
+ /* pwm control */
+ if ((pwm_ctrl & LM3630_PWM_BANK_A) != 0) {
+ lm3630_pwm_ctrl(pchip, bl->props.brightness,
+ bl->props.max_brightness);
return bl->props.brightness;
}

- /* pwm control */
- if (pwm_ctrl == PWM_CTRL_BANK_A || pwm_ctrl == PWM_CTRL_BANK_ALL) {
- if (!set_intensity(bl, pchip))
- dev_err(pchip->dev, "No pwm control func. in plat-data\n");
- } else {
-
- /* i2c control */
- ret = regmap_update_bits(pchip->regmap, REG_CTRL, 0x80, 0x00);
- if (ret < 0)
- goto out;
- mdelay(1);
- ret = regmap_write(pchip->regmap,
- REG_BRT_A, bl->props.brightness - 1);
- if (ret < 0)
- goto out;
- }
+ /* disable sleep */
+ ret = lm3630_update(pchip, REG_CTRL, 0x80, 0x00);
+ if (ret < 0)
+ goto out_i2c_err;
+ mdelay(1);
+ /* minimum brightness is 0x04 */
+ ret = lm3630_write(pchip, REG_BRT_A, bl->props.brightness);
+ if (bl->props.brightness < 0x4)
+ ret |= lm3630_update(pchip, REG_CTRL, LM3630_LEDA_ENABLE, 0);
+ else
+ ret |= lm3630_update(pchip, REG_CTRL,
+ LM3630_LEDA_ENABLE, LM3630_LEDA_ENABLE);
+ if (ret < 0)
+ goto out_i2c_err;
return bl->props.brightness;
-out:
- dev_err(pchip->dev, "i2c failed to access REG_CTRL\n");
+
+out_i2c_err:
+ dev_err(pchip->dev, "i2c failed to access\n");
return bl->props.brightness;
}

static int lm3630_bank_a_get_brightness(struct backlight_device *bl)
{
- unsigned int reg_val;
- int brightness, ret;
- struct lm3630_chip_data *pchip = bl_get_data(bl);
+ int brightness, rval;
+ struct lm3630_chip *pchip = bl_get_data(bl);
enum lm3630_pwm_ctrl pwm_ctrl = pchip->pdata->pwm_ctrl;

- if (pwm_ctrl == PWM_CTRL_BANK_A || pwm_ctrl == PWM_CTRL_BANK_ALL) {
- ret = regmap_read(pchip->regmap, REG_PWM_OUTHIGH, &reg_val);
- if (ret < 0)
- goto out;
- brightness = reg_val & 0x01;
- ret = regmap_read(pchip->regmap, REG_PWM_OUTLOW, &reg_val);
- if (ret < 0)
- goto out;
- brightness = ((brightness << 8) | reg_val) + 1;
- } else {
- ret = regmap_update_bits(pchip->regmap, REG_CTRL, 0x80, 0x00);
- if (ret < 0)
- goto out;
- mdelay(1);
- ret = regmap_read(pchip->regmap, REG_BRT_A, &reg_val);
- if (ret < 0)
- goto out;
- brightness = reg_val + 1;
+ if ((pwm_ctrl & LM3630_PWM_BANK_A) != 0) {
+ rval = lm3630_read(pchip, REG_PWM_OUTHIGH);
+ if (rval < 0)
+ goto out_i2c_err;
+ brightness = rval & 0x01;
+ rval = lm3630_read(pchip, REG_PWM_OUTLOW);
+ if (rval < 0)
+ goto out_i2c_err;
+ brightness = ((brightness << 8) | rval);
+ goto out;
}
+
+ /* disable sleep */
+ rval = lm3630_update(pchip, REG_CTRL, 0x80, 0x00);
+ if (rval < 0)
+ goto out_i2c_err;
+ mdelay(1);
+ rval = lm3630_read(pchip, REG_BRT_A);
+ if (rval < 0)
+ goto out_i2c_err;
+ brightness = rval;
+
+out:
bl->props.brightness = brightness;
return bl->props.brightness;
-out:
+out_i2c_err:
dev_err(pchip->dev, "i2c failed to access register\n");
return 0;
}
@@ -239,62 +249,75 @@ static const struct backlight_ops lm3630_bank_a_ops = {
.get_brightness = lm3630_bank_a_get_brightness,
};

+/* update and get brightness */
static int lm3630_bank_b_update_status(struct backlight_device *bl)
{
int ret;
- struct lm3630_chip_data *pchip = bl_get_data(bl);
+ struct lm3630_chip *pchip = bl_get_data(bl);
enum lm3630_pwm_ctrl pwm_ctrl = pchip->pdata->pwm_ctrl;

- if (pwm_ctrl == PWM_CTRL_BANK_B || pwm_ctrl == PWM_CTRL_BANK_ALL) {
- if (!set_intensity(bl, pchip))
- dev_err(pchip->dev,
- "no pwm control func. in plat-data\n");
- } else {
- ret = regmap_update_bits(pchip->regmap, REG_CTRL, 0x80, 0x00);
- if (ret < 0)
- goto out;
- mdelay(1);
- ret = regmap_write(pchip->regmap,
- REG_BRT_B, bl->props.brightness - 1);
+ /* pwm control */
+ if ((pwm_ctrl & LM3630_PWM_BANK_B) != 0) {
+ lm3630_pwm_ctrl(pchip, bl->props.brightness,
+ bl->props.max_brightness);
+ return bl->props.brightness;
}
+
+ /* disable sleep */
+ ret = lm3630_update(pchip, REG_CTRL, 0x80, 0x00);
+ if (ret < 0)
+ goto out_i2c_err;
+ mdelay(1);
+ /* minimum brightness is 0x04 */
+ ret = lm3630_write(pchip, REG_BRT_B, bl->props.brightness);
+ if (bl->props.brightness < 0x4)
+ ret |= lm3630_update(pchip, REG_CTRL, LM3630_LEDB_ENABLE, 0);
+ else
+ ret |= lm3630_update(pchip, REG_CTRL,
+ LM3630_LEDB_ENABLE, LM3630_LEDB_ENABLE);
+ if (ret < 0)
+ goto out_i2c_err;
return bl->props.brightness;
-out:
- dev_err(pchip->dev, "i2c failed to access register\n");
+
+out_i2c_err:
+ dev_err(pchip->dev, "i2c failed to access REG_CTRL\n");
return bl->props.brightness;
}

static int lm3630_bank_b_get_brightness(struct backlight_device *bl)
{
- unsigned int reg_val;
- int brightness, ret;
- struct lm3630_chip_data *pchip = bl_get_data(bl);
+ int brightness, rval;
+ struct lm3630_chip *pchip = bl_get_data(bl);
enum lm3630_pwm_ctrl pwm_ctrl = pchip->pdata->pwm_ctrl;

- if (pwm_ctrl == PWM_CTRL_BANK_B || pwm_ctrl == PWM_CTRL_BANK_ALL) {
- ret = regmap_read(pchip->regmap, REG_PWM_OUTHIGH, &reg_val);
- if (ret < 0)
- goto out;
- brightness = reg_val & 0x01;
- ret = regmap_read(pchip->regmap, REG_PWM_OUTLOW, &reg_val);
- if (ret < 0)
- goto out;
- brightness = ((brightness << 8) | reg_val) + 1;
- } else {
- ret = regmap_update_bits(pchip->regmap, REG_CTRL, 0x80, 0x00);
- if (ret < 0)
- goto out;
- mdelay(1);
- ret = regmap_read(pchip->regmap, REG_BRT_B, &reg_val);
- if (ret < 0)
- goto out;
- brightness = reg_val + 1;
+ if ((pwm_ctrl & LM3630_PWM_BANK_B) != 0) {
+ rval = lm3630_read(pchip, REG_PWM_OUTHIGH);
+ if (rval < 0)
+ goto out_i2c_err;
+ brightness = rval & 0x01;
+ rval = lm3630_read(pchip, REG_PWM_OUTLOW);
+ if (rval < 0)
+ goto out_i2c_err;
+ brightness = ((brightness << 8) | rval);
+ goto out;
}
- bl->props.brightness = brightness;

- return bl->props.brightness;
+ /* disable sleep */
+ rval = lm3630_update(pchip, REG_CTRL, 0x80, 0x00);
+ if (rval < 0)
+ goto out_i2c_err;
+ mdelay(1);
+ rval = lm3630_read(pchip, REG_BRT_B);
+ if (rval < 0)
+ goto out_i2c_err;
+ brightness = rval;
+
out:
- dev_err(pchip->dev, "i2c failed to access register\n");
+ bl->props.brightness = brightness;
return bl->props.brightness;
+out_i2c_err:
+ dev_err(pchip->dev, "i2c failed to access register\n");
+ return 0;
}

static const struct backlight_ops lm3630_bank_b_ops = {
@@ -303,44 +326,41 @@ static const struct backlight_ops lm3630_bank_b_ops = {
.get_brightness = lm3630_bank_b_get_brightness,
};

-static int lm3630_backlight_register(struct lm3630_chip_data *pchip,
- enum lm3630_leds ledno)
+static int lm3630_backlight_register(struct lm3630_chip *pchip)
{
- const char *name = bled_name[ledno];
struct backlight_properties props;
struct lm3630_platform_data *pdata = pchip->pdata;

props.type = BACKLIGHT_RAW;
- switch (ledno) {
- case BLED_1:
- case BLED_ALL:
- props.brightness = pdata->init_brt_led1;
- props.max_brightness = pdata->max_brt_led1;
- pchip->bled1 =
- backlight_device_register(name, pchip->dev, pchip,
+ if (pdata->leda_ctrl != LM3630_LEDA_DISABLE) {
+ props.brightness = pdata->leda_init_brt;
+ props.max_brightness = pdata->leda_max_brt;
+ pchip->bleda =
+ backlight_device_register("lm3630_leda", pchip->dev, pchip,
&lm3630_bank_a_ops, &props);
- if (IS_ERR(pchip->bled1))
- return PTR_ERR(pchip->bled1);
- break;
- case BLED_2:
- props.brightness = pdata->init_brt_led2;
- props.max_brightness = pdata->max_brt_led2;
- pchip->bled2 =
- backlight_device_register(name, pchip->dev, pchip,
+ if (IS_ERR(pchip->bleda))
+ return PTR_ERR(pchip->bleda);
+ }
+
+ if ((pdata->ledb_ctrl != LM3630_LEDB_DISABLE) &&
+ (pdata->ledb_ctrl != LM3630_LEDB_ON_A)) {
+ props.brightness = pdata->ledb_init_brt;
+ props.max_brightness = pdata->ledb_max_brt;
+ pchip->bledb =
+ backlight_device_register("lm3630_ledb", pchip->dev, pchip,
&lm3630_bank_b_ops, &props);
- if (IS_ERR(pchip->bled2))
- return PTR_ERR(pchip->bled2);
- break;
+ if (IS_ERR(pchip->bledb))
+ return PTR_ERR(pchip->bledb);
}
return 0;
}

-static void lm3630_backlight_unregister(struct lm3630_chip_data *pchip)
+static void lm3630_backlight_unregister(struct lm3630_chip *pchip)
{
- if (pchip->bled1)
- backlight_device_unregister(pchip->bled1);
- if (pchip->bled2)
- backlight_device_unregister(pchip->bled2);
+ if (pchip->bleda)
+ backlight_device_unregister(pchip->bleda);
+ if (pchip->bledb)
+ backlight_device_unregister(pchip->bledb);
}

static const struct regmap_config lm3630_regmap = {
@@ -350,96 +370,92 @@ static const struct regmap_config lm3630_regmap = {
};

static int lm3630_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+ const struct i2c_device_id *id)
{
struct lm3630_platform_data *pdata = client->dev.platform_data;
- struct lm3630_chip_data *pchip;
- int ret;
+ struct lm3630_chip *pchip;
+ int rval;

if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
- dev_err(&client->dev, "fail : i2c functionality check...\n");
+ dev_err(&client->dev, "fail : i2c functionality check\n");
return -EOPNOTSUPP;
}

- if (pdata == NULL) {
- dev_err(&client->dev, "fail : no platform data.\n");
- return -ENODATA;
- }
-
- pchip = devm_kzalloc(&client->dev, sizeof(struct lm3630_chip_data),
+ pchip = devm_kzalloc(&client->dev, sizeof(struct lm3630_chip),
GFP_KERNEL);
if (!pchip)
return -ENOMEM;
- pchip->pdata = pdata;
pchip->dev = &client->dev;

pchip->regmap = devm_regmap_init_i2c(client, &lm3630_regmap);
if (IS_ERR(pchip->regmap)) {
- ret = PTR_ERR(pchip->regmap);
- dev_err(&client->dev, "fail : allocate register map: %d\n",
- ret);
- return ret;
+ rval = PTR_ERR(pchip->regmap);
+ dev_err(&client->dev, "fail : allocate reg. map: %d\n", rval);
+ return rval;
}
+
i2c_set_clientdata(client, pchip);
+ if (pdata == NULL) {
+ pchip->pdata = devm_kzalloc(pchip->dev,
+ sizeof(struct lm3630_platform_data),
+ GFP_KERNEL);
+ if (pchip->pdata == NULL)
+ return -ENOMEM;
+ /* default values */
+ pchip->pdata->leda_ctrl = LM3630_LEDA_ENABLE;
+ pchip->pdata->ledb_ctrl = LM3630_LEDB_ENABLE;
+ pchip->pdata->leda_max_brt = LM3630_MAX_BRIGHTNESS;
+ pchip->pdata->ledb_max_brt = LM3630_MAX_BRIGHTNESS;
+ pchip->pdata->leda_init_brt = LM3630_MAX_BRIGHTNESS;
+ pchip->pdata->ledb_init_brt = LM3630_MAX_BRIGHTNESS;
+ } else
+ pchip->pdata = pdata;

/* chip initialize */
- ret = lm3630_chip_init(pchip);
- if (ret < 0) {
+ rval = lm3630_chip_init(pchip);
+ if (rval < 0) {
dev_err(&client->dev, "fail : init chip\n");
- goto err_chip_init;
- }
-
- switch (pdata->bank_a_ctrl) {
- case BANK_A_CTRL_ALL:
- ret = lm3630_backlight_register(pchip, BLED_ALL);
- pdata->bank_b_ctrl = BANK_B_CTRL_DISABLE;
- break;
- case BANK_A_CTRL_LED1:
- ret = lm3630_backlight_register(pchip, BLED_1);
- break;
- case BANK_A_CTRL_LED2:
- ret = lm3630_backlight_register(pchip, BLED_2);
- pdata->bank_b_ctrl = BANK_B_CTRL_DISABLE;
- break;
- default:
- break;
+ return rval;
}
-
- if (ret < 0)
+ /* backlight register */
+ rval = lm3630_backlight_register(pchip);
+ if (rval < 0) {
+ dev_err(&client->dev, "fail : backlight register.\n");
goto err_bl_reg;
-
- if (pdata->bank_b_ctrl && pchip->bled2 == NULL) {
- ret = lm3630_backlight_register(pchip, BLED_2);
- if (ret < 0)
+ }
+ /* pwm */
+ if (pdata->pwm_ctrl != LM3630_PWM_DISABLE) {
+ pchip->pwmd = devm_pwm_get(pchip->dev, "lm3630-pwm");
+ if (IS_ERR(pchip->pwmd)) {
+ dev_err(&client->dev, "fail : get pwm device\n");
goto err_bl_reg;
+ }
}
+ pchip->pwmd->period = pdata->pwm_period;

/* interrupt enable : irq 0 is not allowed for lm3630 */
pchip->irq = client->irq;
if (pchip->irq)
lm3630_intr_config(pchip);
-
dev_info(&client->dev, "LM3630 backlight register OK.\n");
return 0;

err_bl_reg:
- dev_err(&client->dev, "fail : backlight register.\n");
lm3630_backlight_unregister(pchip);
-err_chip_init:
- return ret;
+ return rval;
}

static int lm3630_remove(struct i2c_client *client)
{
- int ret;
- struct lm3630_chip_data *pchip = i2c_get_clientdata(client);
+ int rval;
+ struct lm3630_chip *pchip = i2c_get_clientdata(client);

- ret = regmap_write(pchip->regmap, REG_BRT_A, 0);
- if (ret < 0)
+ rval = lm3630_write(pchip, REG_BRT_A, 0);
+ if (rval < 0)
dev_err(pchip->dev, "i2c failed to access register\n");

- ret = regmap_write(pchip->regmap, REG_BRT_B, 0);
- if (ret < 0)
+ rval = lm3630_write(pchip, REG_BRT_B, 0);
+ if (rval < 0)
dev_err(pchip->dev, "i2c failed to access register\n");

lm3630_backlight_unregister(pchip);
@@ -470,6 +486,5 @@ static struct i2c_driver lm3630_i2c_driver = {
module_i2c_driver(lm3630_i2c_driver);

MODULE_DESCRIPTION("Texas Instruments Backlight driver for LM3630");
-MODULE_AUTHOR("G.Shark Jeong <gshark.jeong@xxxxxxxxx>");
MODULE_AUTHOR("Daniel Jeong <daniel.jeong@xxxxxx>");
MODULE_LICENSE("GPL v2");
diff --git a/include/linux/platform_data/lm3630_bl.h b/include/linux/platform_data/lm3630_bl.h
index 9176dd3..7282211 100644
--- a/include/linux/platform_data/lm3630_bl.h
+++ b/include/linux/platform_data/lm3630_bl.h
@@ -11,47 +11,55 @@
#ifndef __LINUX_LM3630_H
#define __LINUX_LM3630_H

-#define LM3630_NAME "lm3630_bl"
+#define LM3630_NAME "lm3630a_bl"

enum lm3630_pwm_ctrl {
- PWM_CTRL_DISABLE = 0,
- PWM_CTRL_BANK_A,
- PWM_CTRL_BANK_B,
- PWM_CTRL_BANK_ALL,
+ LM3630_PWM_DISABLE = 0x00,
+ LM3630_PWM_BANK_A,
+ LM3630_PWM_BANK_B,
+ LM3630_PWM_BANK_ALL,
+ LM3630_PWM_BANK_A_ACT_LOW = 0x05,
+ LM3630_PWM_BANK_B_ACT_LOW,
+ LM3630_PWM_BANK_ALL_ACT_LOW,
};

-enum lm3630_pwm_active {
- PWM_ACTIVE_HIGH = 0,
- PWM_ACTIVE_LOW,
+enum lm3630_leda_ctrl {
+ LM3630_LEDA_DISABLE = 0x00,
+ LM3630_LEDA_ENABLE = 0x04,
+ LM3630_LEDA_ENABLE_LINEAR = 0x14,
};

-enum lm3630_bank_a_ctrl {
- BANK_A_CTRL_DISABLE = 0x0,
- BANK_A_CTRL_LED1 = 0x4,
- BANK_A_CTRL_LED2 = 0x1,
- BANK_A_CTRL_ALL = 0x5,
-};
-
-enum lm3630_bank_b_ctrl {
- BANK_B_CTRL_DISABLE = 0,
- BANK_B_CTRL_LED2,
+enum lm3630_ledb_ctrl {
+ LM3630_LEDB_DISABLE = 0x00,
+ LM3630_LEDB_ON_A = 0x01,
+ LM3630_LEDB_ENABLE = 0x02,
+ LM3630_LEDB_ENABLE_LINEAR = 0x0A,
};

+#define LM3630_MAX_BRIGHTNESS 255
+/*
+ *@leda_init_brt : led a init brightness. 4~255
+ *@leda_max_brt : led a max brightness. 4~255
+ *@leda_ctrl : led a disable, enable linear, enable exponential
+ *@ledb_init_brt : led b init brightness. 4~255
+ *@ledb_max_brt : led b max brightness. 4~255
+ *@ledb_ctrl : led b disable, enable linear, enable exponential
+ *@pwm_period : pwm period
+ *@pwm_ctrl : pwm disable, bank a or b, active high or low
+ */
struct lm3630_platform_data {

- /* maximum brightness */
- int max_brt_led1;
- int max_brt_led2;
-
- /* initial on brightness */
- int init_brt_led1;
- int init_brt_led2;
- enum lm3630_pwm_ctrl pwm_ctrl;
- enum lm3630_pwm_active pwm_active;
- enum lm3630_bank_a_ctrl bank_a_ctrl;
- enum lm3630_bank_b_ctrl bank_b_ctrl;
+ /* led a config. */
+ int leda_init_brt;
+ int leda_max_brt;
+ enum lm3630_leda_ctrl leda_ctrl;
+ /* led b config. */
+ int ledb_init_brt;
+ int ledb_max_brt;
+ enum lm3630_ledb_ctrl ledb_ctrl;
+ /* pwm config. */
unsigned int pwm_period;
- void (*pwm_set_intensity) (int brightness, int max_brightness);
+ enum lm3630_pwm_ctrl pwm_ctrl;
};

#endif /* __LINUX_LM3630_H */
--
1.7.9.5

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