diff options
Diffstat (limited to 'drivers/video/backlight')
48 files changed, 887 insertions, 981 deletions
diff --git a/drivers/video/backlight/88pm860x_bl.c b/drivers/video/backlight/88pm860x_bl.c index 2cd63507ed7..7db5234462d 100644 --- a/drivers/video/backlight/88pm860x_bl.c +++ b/drivers/video/backlight/88pm860x_bl.c @@ -196,7 +196,7 @@ static int pm860x_backlight_dt_init(struct platform_device *pdev, static int pm860x_backlight_probe(struct platform_device *pdev) { struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent); - struct pm860x_backlight_pdata *pdata = pdev->dev.platform_data; + struct pm860x_backlight_pdata *pdata = dev_get_platdata(&pdev->dev); struct pm860x_backlight_data *data; struct backlight_device *bl; struct resource *res; @@ -243,7 +243,7 @@ static int pm860x_backlight_probe(struct platform_device *pdev) memset(&props, 0, sizeof(struct backlight_properties)); props.type = BACKLIGHT_RAW; props.max_brightness = MAX_BRIGHTNESS; - bl = backlight_device_register(name, &pdev->dev, data, + bl = devm_backlight_device_register(&pdev->dev, name, &pdev->dev, data, &pm860x_backlight_ops, &props); if (IS_ERR(bl)) { dev_err(&pdev->dev, "failed to register backlight\n"); @@ -256,21 +256,10 @@ static int pm860x_backlight_probe(struct platform_device *pdev) /* read current backlight */ ret = pm860x_backlight_get_brightness(bl); if (ret < 0) - goto out_brt; + return ret; backlight_update_status(bl); return 0; -out_brt: - backlight_device_unregister(bl); - return ret; -} - -static int pm860x_backlight_remove(struct platform_device *pdev) -{ - struct backlight_device *bl = platform_get_drvdata(pdev); - - backlight_device_unregister(bl); - return 0; } static struct platform_driver pm860x_backlight_driver = { @@ -279,7 +268,6 @@ static struct platform_driver pm860x_backlight_driver = { .owner = THIS_MODULE, }, .probe = pm860x_backlight_probe, - .remove = pm860x_backlight_remove, }; module_platform_driver(pm860x_backlight_driver); diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig index d4a7a351d67..5a3eb2ecb52 100644 --- a/drivers/video/backlight/Kconfig +++ b/drivers/video/backlight/Kconfig @@ -368,12 +368,12 @@ config BACKLIGHT_AAT2870 If you have a AnalogicTech AAT2870 say Y to enable the backlight driver. -config BACKLIGHT_LM3630 - tristate "Backlight Driver for LM3630" +config BACKLIGHT_LM3630A + 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" @@ -388,8 +388,8 @@ config BACKLIGHT_LP855X tristate "Backlight driver for TI LP855X" depends on BACKLIGHT_CLASS_DEVICE && I2C help - This supports TI LP8550, LP8551, LP8552, LP8553, LP8556 and LP8557 - backlight driver. + This supports TI LP8550, LP8551, LP8552, LP8553, LP8555, LP8556 and + LP8557 backlight driver. config BACKLIGHT_LP8788 tristate "Backlight driver for TI LP8788 MFD" diff --git a/drivers/video/backlight/Makefile b/drivers/video/backlight/Makefile index 38e1babb194..bb820024f34 100644 --- a/drivers/video/backlight/Makefile +++ b/drivers/video/backlight/Makefile @@ -37,7 +37,7 @@ obj-$(CONFIG_BACKLIGHT_GPIO) += gpio_backlight.o obj-$(CONFIG_BACKLIGHT_HP680) += hp680_bl.o obj-$(CONFIG_BACKLIGHT_HP700) += jornada720_bl.o obj-$(CONFIG_BACKLIGHT_LM3533) += lm3533_bl.o -obj-$(CONFIG_BACKLIGHT_LM3630) += lm3630_bl.o +obj-$(CONFIG_BACKLIGHT_LM3630A) += lm3630a_bl.o obj-$(CONFIG_BACKLIGHT_LM3639) += lm3639_bl.o obj-$(CONFIG_BACKLIGHT_LOCOMO) += locomolcd.o obj-$(CONFIG_BACKLIGHT_LP855X) += lp855x_bl.o diff --git a/drivers/video/backlight/aat2870_bl.c b/drivers/video/backlight/aat2870_bl.c index c6fc668d623..ee0c0a982e4 100644 --- a/drivers/video/backlight/aat2870_bl.c +++ b/drivers/video/backlight/aat2870_bl.c @@ -127,7 +127,7 @@ static const struct backlight_ops aat2870_bl_ops = { static int aat2870_bl_probe(struct platform_device *pdev) { - struct aat2870_bl_platform_data *pdata = pdev->dev.platform_data; + struct aat2870_bl_platform_data *pdata = dev_get_platdata(&pdev->dev); struct aat2870_bl_driver_data *aat2870_bl; struct backlight_device *bd; struct backlight_properties props; @@ -158,8 +158,9 @@ static int aat2870_bl_probe(struct platform_device *pdev) memset(&props, 0, sizeof(struct backlight_properties)); props.type = BACKLIGHT_RAW; - bd = backlight_device_register("aat2870-backlight", &pdev->dev, - aat2870_bl, &aat2870_bl_ops, &props); + bd = devm_backlight_device_register(&pdev->dev, "aat2870-backlight", + &pdev->dev, aat2870_bl, &aat2870_bl_ops, + &props); if (IS_ERR(bd)) { dev_err(&pdev->dev, "Failed allocate memory for backlight device\n"); @@ -194,13 +195,11 @@ static int aat2870_bl_probe(struct platform_device *pdev) ret = aat2870_bl_update_status(bd); if (ret < 0) { dev_err(&pdev->dev, "Failed to initialize\n"); - goto out_bl_dev_unregister; + return ret; } return 0; -out_bl_dev_unregister: - backlight_device_unregister(bd); out: return ret; } @@ -214,8 +213,6 @@ static int aat2870_bl_remove(struct platform_device *pdev) bd->props.brightness = 0; backlight_update_status(bd); - backlight_device_unregister(bd); - return 0; } diff --git a/drivers/video/backlight/adp5520_bl.c b/drivers/video/backlight/adp5520_bl.c index c84701b7ca6..f37097a261a 100644 --- a/drivers/video/backlight/adp5520_bl.c +++ b/drivers/video/backlight/adp5520_bl.c @@ -297,7 +297,7 @@ static int adp5520_bl_probe(struct platform_device *pdev) return -ENOMEM; data->master = pdev->dev.parent; - data->pdata = pdev->dev.platform_data; + data->pdata = dev_get_platdata(&pdev->dev); if (data->pdata == NULL) { dev_err(&pdev->dev, "missing platform data\n"); @@ -312,8 +312,9 @@ static int adp5520_bl_probe(struct platform_device *pdev) memset(&props, 0, sizeof(struct backlight_properties)); props.type = BACKLIGHT_RAW; props.max_brightness = ADP5020_MAX_BRIGHTNESS; - bl = backlight_device_register(pdev->name, data->master, data, - &adp5520_bl_ops, &props); + bl = devm_backlight_device_register(&pdev->dev, pdev->name, + data->master, data, &adp5520_bl_ops, + &props); if (IS_ERR(bl)) { dev_err(&pdev->dev, "failed to register backlight\n"); return PTR_ERR(bl); @@ -326,7 +327,7 @@ static int adp5520_bl_probe(struct platform_device *pdev) if (ret) { dev_err(&pdev->dev, "failed to register sysfs\n"); - backlight_device_unregister(bl); + return ret; } platform_set_drvdata(pdev, bl); @@ -347,8 +348,6 @@ static int adp5520_bl_remove(struct platform_device *pdev) sysfs_remove_group(&bl->dev.kobj, &adp5520_bl_attr_group); - backlight_device_unregister(bl); - return 0; } diff --git a/drivers/video/backlight/adp8860_bl.c b/drivers/video/backlight/adp8860_bl.c index 75b10f87612..9d656717d0f 100644 --- a/drivers/video/backlight/adp8860_bl.c +++ b/drivers/video/backlight/adp8860_bl.c @@ -216,7 +216,7 @@ static int adp8860_led_setup(struct adp8860_led *led) static int adp8860_led_probe(struct i2c_client *client) { struct adp8860_backlight_platform_data *pdata = - client->dev.platform_data; + dev_get_platdata(&client->dev); struct adp8860_bl *data = i2c_get_clientdata(client); struct adp8860_led *led, *led_dat; struct led_info *cur_led; @@ -300,7 +300,7 @@ static int adp8860_led_probe(struct i2c_client *client) static int adp8860_led_remove(struct i2c_client *client) { struct adp8860_backlight_platform_data *pdata = - client->dev.platform_data; + dev_get_platdata(&client->dev); struct adp8860_bl *data = i2c_get_clientdata(client); int i; @@ -658,7 +658,7 @@ static int adp8860_probe(struct i2c_client *client, struct backlight_device *bl; struct adp8860_bl *data; struct adp8860_backlight_platform_data *pdata = - client->dev.platform_data; + dev_get_platdata(&client->dev); struct backlight_properties props; uint8_t reg_val; int ret; @@ -711,8 +711,9 @@ static int adp8860_probe(struct i2c_client *client, mutex_init(&data->lock); - bl = backlight_device_register(dev_driver_string(&client->dev), - &client->dev, data, &adp8860_bl_ops, &props); + bl = devm_backlight_device_register(&client->dev, + dev_driver_string(&client->dev), + &client->dev, data, &adp8860_bl_ops, &props); if (IS_ERR(bl)) { dev_err(&client->dev, "failed to register backlight\n"); return PTR_ERR(bl); @@ -728,7 +729,7 @@ static int adp8860_probe(struct i2c_client *client, if (ret) { dev_err(&client->dev, "failed to register sysfs\n"); - goto out1; + return ret; } ret = adp8860_bl_setup(bl); @@ -751,8 +752,6 @@ out: if (data->en_ambl_sens) sysfs_remove_group(&data->bl->dev.kobj, &adp8860_bl_attr_group); -out1: - backlight_device_unregister(bl); return ret; } @@ -770,8 +769,6 @@ static int adp8860_remove(struct i2c_client *client) sysfs_remove_group(&data->bl->dev.kobj, &adp8860_bl_attr_group); - backlight_device_unregister(data->bl); - return 0; } diff --git a/drivers/video/backlight/adp8870_bl.c b/drivers/video/backlight/adp8870_bl.c index 90049d7b5c6..63707205326 100644 --- a/drivers/video/backlight/adp8870_bl.c +++ b/drivers/video/backlight/adp8870_bl.c @@ -238,7 +238,7 @@ static int adp8870_led_setup(struct adp8870_led *led) static int adp8870_led_probe(struct i2c_client *client) { struct adp8870_backlight_platform_data *pdata = - client->dev.platform_data; + dev_get_platdata(&client->dev); struct adp8870_bl *data = i2c_get_clientdata(client); struct adp8870_led *led, *led_dat; struct led_info *cur_led; @@ -325,7 +325,7 @@ static int adp8870_led_probe(struct i2c_client *client) static int adp8870_led_remove(struct i2c_client *client) { struct adp8870_backlight_platform_data *pdata = - client->dev.platform_data; + dev_get_platdata(&client->dev); struct adp8870_bl *data = i2c_get_clientdata(client); int i; @@ -848,7 +848,7 @@ static int adp8870_probe(struct i2c_client *client, struct backlight_device *bl; struct adp8870_bl *data; struct adp8870_backlight_platform_data *pdata = - client->dev.platform_data; + dev_get_platdata(&client->dev); uint8_t reg_val; int ret; @@ -888,8 +888,9 @@ static int adp8870_probe(struct i2c_client *client, memset(&props, 0, sizeof(props)); props.type = BACKLIGHT_RAW; props.max_brightness = props.brightness = ADP8870_MAX_BRIGHTNESS; - bl = backlight_device_register(dev_driver_string(&client->dev), - &client->dev, data, &adp8870_bl_ops, &props); + bl = devm_backlight_device_register(&client->dev, + dev_driver_string(&client->dev), + &client->dev, data, &adp8870_bl_ops, &props); if (IS_ERR(bl)) { dev_err(&client->dev, "failed to register backlight\n"); return PTR_ERR(bl); @@ -902,7 +903,7 @@ static int adp8870_probe(struct i2c_client *client, &adp8870_bl_attr_group); if (ret) { dev_err(&client->dev, "failed to register sysfs\n"); - goto out1; + return ret; } } @@ -925,8 +926,6 @@ out: if (data->pdata->en_ambl_sens) sysfs_remove_group(&data->bl->dev.kobj, &adp8870_bl_attr_group); -out1: - backlight_device_unregister(bl); return ret; } @@ -944,8 +943,6 @@ static int adp8870_remove(struct i2c_client *client) sysfs_remove_group(&data->bl->dev.kobj, &adp8870_bl_attr_group); - backlight_device_unregister(data->bl); - return 0; } diff --git a/drivers/video/backlight/ams369fg06.c b/drivers/video/backlight/ams369fg06.c index 319fef6cb42..d8952c4aa68 100644 --- a/drivers/video/backlight/ams369fg06.c +++ b/drivers/video/backlight/ams369fg06.c @@ -471,14 +471,14 @@ static int ams369fg06_probe(struct spi_device *spi) lcd->spi = spi; lcd->dev = &spi->dev; - lcd->lcd_pd = spi->dev.platform_data; + lcd->lcd_pd = dev_get_platdata(&spi->dev); if (!lcd->lcd_pd) { dev_err(&spi->dev, "platform data is NULL\n"); return -EINVAL; } - ld = lcd_device_register("ams369fg06", &spi->dev, lcd, - &ams369fg06_lcd_ops); + ld = devm_lcd_device_register(&spi->dev, "ams369fg06", &spi->dev, lcd, + &ams369fg06_lcd_ops); if (IS_ERR(ld)) return PTR_ERR(ld); @@ -488,12 +488,11 @@ static int ams369fg06_probe(struct spi_device *spi) props.type = BACKLIGHT_RAW; props.max_brightness = MAX_BRIGHTNESS; - bd = backlight_device_register("ams369fg06-bl", &spi->dev, lcd, - &ams369fg06_backlight_ops, &props); - if (IS_ERR(bd)) { - ret = PTR_ERR(bd); - goto out_lcd_unregister; - } + bd = devm_backlight_device_register(&spi->dev, "ams369fg06-bl", + &spi->dev, lcd, + &ams369fg06_backlight_ops, &props); + if (IS_ERR(bd)) + return PTR_ERR(bd); bd->props.brightness = DEFAULT_BRIGHTNESS; lcd->bd = bd; @@ -516,10 +515,6 @@ static int ams369fg06_probe(struct spi_device *spi) dev_info(&spi->dev, "ams369fg06 panel driver has been probed.\n"); return 0; - -out_lcd_unregister: - lcd_device_unregister(ld); - return ret; } static int ams369fg06_remove(struct spi_device *spi) @@ -527,9 +522,6 @@ static int ams369fg06_remove(struct spi_device *spi) struct ams369fg06 *lcd = spi_get_drvdata(spi); ams369fg06_power(lcd, FB_BLANK_POWERDOWN); - backlight_device_unregister(lcd->bd); - lcd_device_unregister(lcd->ld); - return 0; } diff --git a/drivers/video/backlight/as3711_bl.c b/drivers/video/backlight/as3711_bl.c index 123887cd76b..bb1fc45b754 100644 --- a/drivers/video/backlight/as3711_bl.c +++ b/drivers/video/backlight/as3711_bl.c @@ -240,7 +240,8 @@ static int as3711_bl_register(struct platform_device *pdev, /* max tuning I = 31uA for voltage- and 38250uA for current-feedback */ props.max_brightness = max_brightness; - bl = backlight_device_register(su->type == AS3711_BL_SU1 ? + bl = devm_backlight_device_register(&pdev->dev, + su->type == AS3711_BL_SU1 ? "as3711-su1" : "as3711-su2", &pdev->dev, su, &as3711_bl_ops, &props); @@ -432,8 +433,7 @@ static int as3711_backlight_probe(struct platform_device *pdev) case AS3711_SU2_LX_SD4: break; default: - ret = -EINVAL; - goto esu2; + return -EINVAL; } switch (pdata->su2_feedback) { @@ -447,8 +447,7 @@ static int as3711_backlight_probe(struct platform_device *pdev) max_brightness = min(pdata->su2_max_uA / 150, 255); break; default: - ret = -EINVAL; - goto esu2; + return -EINVAL; } ret = as3711_bl_init_su2(supply); @@ -457,26 +456,12 @@ static int as3711_backlight_probe(struct platform_device *pdev) ret = as3711_bl_register(pdev, max_brightness, su); if (ret < 0) - goto esu2; + return ret; } platform_set_drvdata(pdev, supply); return 0; - -esu2: - backlight_device_unregister(supply->su1.bl); - return ret; -} - -static int as3711_backlight_remove(struct platform_device *pdev) -{ - struct as3711_bl_supply *supply = platform_get_drvdata(pdev); - - backlight_device_unregister(supply->su1.bl); - backlight_device_unregister(supply->su2.bl); - - return 0; } static struct platform_driver as3711_backlight_driver = { @@ -485,7 +470,6 @@ static struct platform_driver as3711_backlight_driver = { .owner = THIS_MODULE, }, .probe = as3711_backlight_probe, - .remove = as3711_backlight_remove, }; module_platform_driver(as3711_backlight_driver); diff --git a/drivers/video/backlight/atmel-pwm-bl.c b/drivers/video/backlight/atmel-pwm-bl.c index 0393d827dd4..261b1a4ec3d 100644 --- a/drivers/video/backlight/atmel-pwm-bl.c +++ b/drivers/video/backlight/atmel-pwm-bl.c @@ -12,7 +12,6 @@ #include <linux/module.h> #include <linux/platform_device.h> #include <linux/fb.h> -#include <linux/clk.h> #include <linux/gpio.h> #include <linux/backlight.h> #include <linux/atmel_pwm.h> @@ -27,6 +26,14 @@ struct atmel_pwm_bl { int gpio_on; }; +static void atmel_pwm_bl_set_gpio_on(struct atmel_pwm_bl *pwmbl, int on) +{ + if (!gpio_is_valid(pwmbl->gpio_on)) + return; + + gpio_set_value(pwmbl->gpio_on, on ^ pwmbl->pdata->on_active_low); +} + static int atmel_pwm_bl_set_intensity(struct backlight_device *bd) { struct atmel_pwm_bl *pwmbl = bl_get_data(bd); @@ -49,19 +56,13 @@ static int atmel_pwm_bl_set_intensity(struct backlight_device *bd) pwm_duty = pwmbl->pdata->pwm_duty_min; if (!intensity) { - if (pwmbl->gpio_on != -1) { - gpio_set_value(pwmbl->gpio_on, - 0 ^ pwmbl->pdata->on_active_low); - } + atmel_pwm_bl_set_gpio_on(pwmbl, 0); pwm_channel_writel(&pwmbl->pwmc, PWM_CUPD, pwm_duty); pwm_channel_disable(&pwmbl->pwmc); } else { pwm_channel_enable(&pwmbl->pwmc); pwm_channel_writel(&pwmbl->pwmc, PWM_CUPD, pwm_duty); - if (pwmbl->gpio_on != -1) { - gpio_set_value(pwmbl->gpio_on, - 1 ^ pwmbl->pdata->on_active_low); - } + atmel_pwm_bl_set_gpio_on(pwmbl, 1); } return 0; @@ -70,17 +71,16 @@ static int atmel_pwm_bl_set_intensity(struct backlight_device *bd) static int atmel_pwm_bl_get_intensity(struct backlight_device *bd) { struct atmel_pwm_bl *pwmbl = bl_get_data(bd); - u8 intensity; + u32 cdty; + u32 intensity; - if (pwmbl->pdata->pwm_active_low) { - intensity = pwm_channel_readl(&pwmbl->pwmc, PWM_CDTY) - - pwmbl->pdata->pwm_duty_min; - } else { - intensity = pwmbl->pdata->pwm_duty_max - - pwm_channel_readl(&pwmbl->pwmc, PWM_CDTY); - } + cdty = pwm_channel_readl(&pwmbl->pwmc, PWM_CDTY); + if (pwmbl->pdata->pwm_active_low) + intensity = cdty - pwmbl->pdata->pwm_duty_min; + else + intensity = pwmbl->pdata->pwm_duty_max - cdty; - return intensity; + return intensity & 0xffff; } static int atmel_pwm_bl_init_pwm(struct atmel_pwm_bl *pwmbl) @@ -118,52 +118,46 @@ static const struct backlight_ops atmel_pwm_bl_ops = { .update_status = atmel_pwm_bl_set_intensity, }; -static int __init atmel_pwm_bl_probe(struct platform_device *pdev) +static int atmel_pwm_bl_probe(struct platform_device *pdev) { struct backlight_properties props; const struct atmel_pwm_bl_platform_data *pdata; struct backlight_device *bldev; struct atmel_pwm_bl *pwmbl; + unsigned long flags; int retval; + pdata = dev_get_platdata(&pdev->dev); + if (!pdata) + return -ENODEV; + + if (pdata->pwm_compare_max < pdata->pwm_duty_max || + pdata->pwm_duty_min > pdata->pwm_duty_max || + pdata->pwm_frequency == 0) + return -EINVAL; + pwmbl = devm_kzalloc(&pdev->dev, sizeof(struct atmel_pwm_bl), GFP_KERNEL); if (!pwmbl) return -ENOMEM; pwmbl->pdev = pdev; - - pdata = pdev->dev.platform_data; - if (!pdata) { - retval = -ENODEV; - goto err_free_mem; - } - - if (pdata->pwm_compare_max < pdata->pwm_duty_max || - pdata->pwm_duty_min > pdata->pwm_duty_max || - pdata->pwm_frequency == 0) { - retval = -EINVAL; - goto err_free_mem; - } - pwmbl->pdata = pdata; pwmbl->gpio_on = pdata->gpio_on; retval = pwm_channel_alloc(pdata->pwm_channel, &pwmbl->pwmc); if (retval) - goto err_free_mem; - - if (pwmbl->gpio_on != -1) { - retval = devm_gpio_request(&pdev->dev, pwmbl->gpio_on, - "gpio_atmel_pwm_bl"); - if (retval) { - pwmbl->gpio_on = -1; - goto err_free_pwm; - } + return retval; + if (gpio_is_valid(pwmbl->gpio_on)) { /* Turn display off by default. */ - retval = gpio_direction_output(pwmbl->gpio_on, - 0 ^ pdata->on_active_low); + if (pdata->on_active_low) + flags = GPIOF_OUT_INIT_HIGH; + else + flags = GPIOF_OUT_INIT_LOW; + + retval = devm_gpio_request_one(&pdev->dev, pwmbl->gpio_on, + flags, "gpio_atmel_pwm_bl"); if (retval) goto err_free_pwm; } @@ -171,8 +165,9 @@ static int __init atmel_pwm_bl_probe(struct platform_device *pdev) memset(&props, 0, sizeof(struct backlight_properties)); props.type = BACKLIGHT_RAW; props.max_brightness = pdata->pwm_duty_max - pdata->pwm_duty_min; - bldev = backlight_device_register("atmel-pwm-bl", &pdev->dev, pwmbl, - &atmel_pwm_bl_ops, &props); + bldev = devm_backlight_device_register(&pdev->dev, "atmel-pwm-bl", + &pdev->dev, pwmbl, &atmel_pwm_bl_ops, + &props); if (IS_ERR(bldev)) { retval = PTR_ERR(bldev); goto err_free_pwm; @@ -188,29 +183,25 @@ static int __init atmel_pwm_bl_probe(struct platform_device *pdev) retval = atmel_pwm_bl_init_pwm(pwmbl); if (retval) - goto err_free_bl_dev; + goto err_free_pwm; atmel_pwm_bl_set_intensity(bldev); return 0; -err_free_bl_dev: - backlight_device_unregister(bldev); err_free_pwm: pwm_channel_free(&pwmbl->pwmc); -err_free_mem: + return retval; } -static int __exit atmel_pwm_bl_remove(struct platform_device *pdev) +static int atmel_pwm_bl_remove(struct platform_device *pdev) { struct atmel_pwm_bl *pwmbl = platform_get_drvdata(pdev); - if (pwmbl->gpio_on != -1) - gpio_set_value(pwmbl->gpio_on, 0); + atmel_pwm_bl_set_gpio_on(pwmbl, 0); pwm_channel_disable(&pwmbl->pwmc); pwm_channel_free(&pwmbl->pwmc); - backlight_device_unregister(pwmbl->bldev); return 0; } @@ -220,11 +211,13 @@ static struct platform_driver atmel_pwm_bl_driver = { .name = "atmel-pwm-bl", }, /* REVISIT add suspend() and resume() */ - .remove = __exit_p(atmel_pwm_bl_remove), + .probe = atmel_pwm_bl_probe, + .remove = atmel_pwm_bl_remove, }; -module_platform_driver_probe(atmel_pwm_bl_driver, atmel_pwm_bl_probe); +module_platform_driver(atmel_pwm_bl_driver); MODULE_AUTHOR("Hans-Christian egtvedt <hans-christian.egtvedt@atmel.com>"); MODULE_DESCRIPTION("Atmel PWM backlight driver"); MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:atmel-pwm-bl"); diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/backlight.c index 94a403a9717..5d05555fe84 100644 --- a/drivers/video/backlight/backlight.c +++ b/drivers/video/backlight/backlight.c @@ -21,6 +21,9 @@ #include <asm/backlight.h> #endif +static struct list_head backlight_dev_list; +static struct mutex backlight_dev_list_mutex; + static const char *const backlight_types[] = { [BACKLIGHT_RAW] = "raw", [BACKLIGHT_PLATFORM] = "platform", @@ -349,10 +352,32 @@ struct backlight_device *backlight_device_register(const char *name, mutex_unlock(&pmac_backlight_mutex); #endif + mutex_lock(&backlight_dev_list_mutex); + list_add(&new_bd->entry, &backlight_dev_list); + mutex_unlock(&backlight_dev_list_mutex); + return new_bd; } EXPORT_SYMBOL(backlight_device_register); +bool backlight_device_registered(enum backlight_type type) +{ + bool found = false; + struct backlight_device *bd; + + mutex_lock(&backlight_dev_list_mutex); + list_for_each_entry(bd, &backlight_dev_list, entry) { + if (bd->props.type == type) { + found = true; + break; + } + } + mutex_unlock(&backlight_dev_list_mutex); + + return found; +} +EXPORT_SYMBOL(backlight_device_registered); + /** * backlight_device_unregister - unregisters a backlight device object. * @bd: the backlight device object to be unregistered and freed. @@ -364,6 +389,10 @@ void backlight_device_unregister(struct backlight_device *bd) if (!bd) return; + mutex_lock(&backlight_dev_list_mutex); + list_del(&bd->entry); + mutex_unlock(&backlight_dev_list_mutex); + #ifdef CONFIG_PMAC_BACKLIGHT mutex_lock(&pmac_backlight_mutex); if (pmac_backlight == bd) @@ -499,6 +528,8 @@ static int __init backlight_class_init(void) backlight_class->dev_groups = bl_device_groups; backlight_class->pm = &backlight_class_dev_pm_ops; + INIT_LIST_HEAD(&backlight_dev_list); + mutex_init(&backlight_dev_list_mutex); return 0; } diff --git a/drivers/video/backlight/bd6107.c b/drivers/video/backlight/bd6107.c index 15e3294b29f..16dd9bc625b 100644 --- a/drivers/video/backlight/bd6107.c +++ b/drivers/video/backlight/bd6107.c @@ -128,7 +128,7 @@ static const struct backlight_ops bd6107_backlight_ops = { static int bd6107_probe(struct i2c_client *client, const struct i2c_device_id *id) { - struct bd6107_platform_data *pdata = client->dev.platform_data; + struct bd6107_platform_data *pdata = dev_get_platdata(&client->dev); struct backlight_device *backlight; struct backlight_properties props; struct bd6107 *bd; @@ -166,7 +166,8 @@ static int bd6107_probe(struct i2c_client *client, props.brightness = clamp_t(unsigned int, pdata->def_value, 0, props.max_brightness); - backlight = backlight_device_register(dev_name(&client->dev), + backlight = devm_backlight_device_register(&client->dev, + dev_name(&client->dev), &bd->client->dev, bd, &bd6107_backlight_ops, &props); if (IS_ERR(backlight)) { @@ -186,7 +187,6 @@ static int bd6107_remove(struct i2c_client *client) backlight->props.brightness = 0; backlight_update_status(backlight); - backlight_device_unregister(backlight); return 0; } diff --git a/drivers/video/backlight/corgi_lcd.c b/drivers/video/backlight/corgi_lcd.c index c97867a717a..db8db5fa658 100644 --- a/drivers/video/backlight/corgi_lcd.c +++ b/drivers/video/backlight/corgi_lcd.c @@ -533,7 +533,7 @@ static int setup_gpio_backlight(struct corgi_lcd *lcd, static int corgi_lcd_probe(struct spi_device *spi) { struct backlight_properties props; - struct corgi_lcd_platform_data *pdata = spi->dev.platform_data; + struct corgi_lcd_platform_data *pdata = dev_get_platdata(&spi->dev); struct corgi_lcd *lcd; int ret = 0; @@ -550,8 +550,8 @@ static int corgi_lcd_probe(struct spi_device *spi) lcd->spi_dev = spi; - lcd->lcd_dev = lcd_device_register("corgi_lcd", &spi->dev, - lcd, &corgi_lcd_ops); + lcd->lcd_dev = devm_lcd_device_register(&spi->dev, "corgi_lcd", + &spi->dev, lcd, &corgi_lcd_ops); if (IS_ERR(lcd->lcd_dev)) return PTR_ERR(lcd->lcd_dev); @@ -561,18 +561,18 @@ static int corgi_lcd_probe(struct spi_device *spi) memset(&props, 0, sizeof(struct backlight_properties)); props.type = BACKLIGHT_RAW; props.max_brightness = pdata->max_intensity; - lcd->bl_dev = backlight_device_register("corgi_bl", &spi->dev, lcd, - &corgi_bl_ops, &props); - if (IS_ERR(lcd->bl_dev)) { - ret = PTR_ERR(lcd->bl_dev); - goto err_unregister_lcd; - } + lcd->bl_dev = devm_backlight_device_register(&spi->dev, "corgi_bl", + &spi->dev, lcd, &corgi_bl_ops, + &props); + if (IS_ERR(lcd->bl_dev)) + return PTR_ERR(lcd->bl_dev); + lcd->bl_dev->props.brightness = pdata->default_intensity; lcd->bl_dev->props.power = FB_BLANK_UNBLANK; ret = setup_gpio_backlight(lcd, pdata); if (ret) - goto err_unregister_bl; + return ret; lcd->kick_battery = pdata->kick_battery; @@ -583,12 +583,6 @@ static int corgi_lcd_probe(struct spi_device *spi) lcd->limit_mask = pdata->limit_mask; the_corgi_lcd = lcd; return 0; - -err_unregister_bl: - backlight_device_unregister(lcd->bl_dev); -err_unregister_lcd: - lcd_device_unregister(lcd->lcd_dev); - return ret; } static int corgi_lcd_remove(struct spi_device *spi) @@ -598,11 +592,7 @@ static int corgi_lcd_remove(struct spi_device *spi) lcd->bl_dev->props.power = FB_BLANK_UNBLANK; lcd->bl_dev->props.brightness = 0; backlight_update_status(lcd->bl_dev); - backlight_device_unregister(lcd->bl_dev); - corgi_lcd_set_power(lcd->lcd_dev, FB_BLANK_POWERDOWN); - lcd_device_unregister(lcd->lcd_dev); - return 0; } diff --git a/drivers/video/backlight/cr_bllcd.c b/drivers/video/backlight/cr_bllcd.c index 37bae801e23..f3fed9ef745 100644 --- a/drivers/video/backlight/cr_bllcd.c +++ b/drivers/video/backlight/cr_bllcd.c @@ -195,16 +195,17 @@ static int cr_backlight_probe(struct platform_device *pdev) memset(&props, 0, sizeof(struct backlight_properties)); props.type = BACKLIGHT_RAW; - bdp = backlight_device_register("cr-backlight", &pdev->dev, NULL, - &cr_backlight_ops, &props); + bdp = devm_backlight_device_register(&pdev->dev, "cr-backlight", + &pdev->dev, NULL, &cr_backlight_ops, + &props); if (IS_ERR(bdp)) { pci_dev_put(lpc_dev); return PTR_ERR(bdp); } - ldp = lcd_device_register("cr-lcd", &pdev->dev, NULL, &cr_lcd_ops); + ldp = devm_lcd_device_register(&pdev->dev, "cr-lcd", &pdev->dev, NULL, + &cr_lcd_ops); if (IS_ERR(ldp)) { - backlight_device_unregister(bdp); pci_dev_put(lpc_dev); return PTR_ERR(ldp); } @@ -215,8 +216,6 @@ static int cr_backlight_probe(struct platform_device *pdev) crp = devm_kzalloc(&pdev->dev, sizeof(*crp), GFP_KERNEL); if (!crp) { - lcd_device_unregister(ldp); - backlight_device_unregister(bdp); pci_dev_put(lpc_dev); return -ENOMEM; } @@ -241,8 +240,6 @@ static int cr_backlight_remove(struct platform_device *pdev) crp->cr_backlight_device->props.max_brightness = 0; cr_backlight_set_intensity(crp->cr_backlight_device); cr_lcd_set_power(crp->cr_lcd_device, FB_BLANK_POWERDOWN); - backlight_device_unregister(crp->cr_backlight_device); - lcd_device_unregister(crp->cr_lcd_device); pci_dev_put(lpc_dev); return 0; diff --git a/drivers/video/backlight/da903x_bl.c b/drivers/video/backlight/da903x_bl.c index 67cadd30e27..12c5d840c59 100644 --- a/drivers/video/backlight/da903x_bl.c +++ b/drivers/video/backlight/da903x_bl.c @@ -109,7 +109,7 @@ static const struct backlight_ops da903x_backlight_ops = { static int da903x_backlight_probe(struct platform_device *pdev) { - struct da9034_backlight_pdata *pdata = pdev->dev.platform_data; + struct da9034_backlight_pdata *pdata = dev_get_platdata(&pdev->dev); struct da903x_backlight_data *data; struct backlight_device *bl; struct backlight_properties props; @@ -144,8 +144,9 @@ static int da903x_backlight_probe(struct platform_device *pdev) memset(&props, 0, sizeof(props)); props.type = BACKLIGHT_RAW; props.max_brightness = max_brightness; - bl = backlight_device_register(pdev->name, data->da903x_dev, data, - &da903x_backlight_ops, &props); + bl = devm_backlight_device_register(&pdev->dev, pdev->name, + data->da903x_dev, data, + &da903x_backlight_ops, &props); if (IS_ERR(bl)) { dev_err(&pdev->dev, "failed to register backlight\n"); return PTR_ERR(bl); @@ -158,21 +159,12 @@ static int da903x_backlight_probe(struct platform_device *pdev) return 0; } -static int da903x_backlight_remove(struct platform_device *pdev) -{ - struct backlight_device *bl = platform_get_drvdata(pdev); - - backlight_device_unregister(bl); - return 0; -} - static struct platform_driver da903x_backlight_driver = { .driver = { .name = "da903x-backlight", .owner = THIS_MODULE, }, .probe = da903x_backlight_probe, - .remove = da903x_backlight_remove, }; module_platform_driver(da903x_backlight_driver); diff --git a/drivers/video/backlight/da9052_bl.c b/drivers/video/backlight/da9052_bl.c index 842da5a3ac4..20d55becaa7 100644 --- a/drivers/video/backlight/da9052_bl.c +++ b/drivers/video/backlight/da9052_bl.c @@ -125,8 +125,9 @@ static int da9052_backlight_probe(struct platform_device *pdev) props.type = BACKLIGHT_RAW; props.max_brightness = DA9052_MAX_BRIGHTNESS; - bl = backlight_device_register(pdev->name, wleds->da9052->dev, wleds, - &da9052_backlight_ops, &props); + bl = devm_backlight_device_register(&pdev->dev, pdev->name, + wleds->da9052->dev, wleds, + &da9052_backlight_ops, &props); if (IS_ERR(bl)) { dev_err(&pdev->dev, "Failed to register backlight\n"); return PTR_ERR(bl); @@ -147,7 +148,6 @@ static int da9052_backlight_remove(struct platform_device *pdev) wleds->brightness = 0; wleds->state = DA9052_WLEDS_OFF; da9052_adjust_wled_brightness(wleds); - backlight_device_unregister(bl); return 0; } diff --git a/drivers/video/backlight/ep93xx_bl.c b/drivers/video/backlight/ep93xx_bl.c index 018368ba412..0d1f633c648 100644 --- a/drivers/video/backlight/ep93xx_bl.c +++ b/drivers/video/backlight/ep93xx_bl.c @@ -92,8 +92,8 @@ static int ep93xxbl_probe(struct platform_device *dev) memset(&props, 0, sizeof(struct backlight_properties)); props.type = BACKLIGHT_RAW; props.max_brightness = EP93XX_MAX_BRIGHT; - bl = backlight_device_register(dev->name, &dev->dev, ep93xxbl, - &ep93xxbl_ops, &props); + bl = devm_backlight_device_register(&dev->dev, dev->name, &dev->dev, + ep93xxbl, &ep93xxbl_ops, &props); if (IS_ERR(bl)) return PTR_ERR(bl); @@ -106,14 +106,6 @@ static int ep93xxbl_probe(struct platform_device *dev) return 0; } -static int ep93xxbl_remove(struct platform_device *dev) -{ - struct backlight_device *bl = platform_get_drvdata(dev); - - backlight_device_unregister(bl); - return 0; -} - #ifdef CONFIG_PM_SLEEP static int ep93xxbl_suspend(struct device *dev) { @@ -140,7 +132,6 @@ static struct platform_driver ep93xxbl_driver = { .pm = &ep93xxbl_pm_ops, }, .probe = ep93xxbl_probe, - .remove = ep93xxbl_remove, }; module_platform_driver(ep93xxbl_driver); diff --git a/drivers/video/backlight/generic_bl.c b/drivers/video/backlight/generic_bl.c index 19e393b4143..5d8d65200db 100644 --- a/drivers/video/backlight/generic_bl.c +++ b/drivers/video/backlight/generic_bl.c @@ -79,7 +79,7 @@ static const struct backlight_ops genericbl_ops = { static int genericbl_probe(struct platform_device *pdev) { struct backlight_properties props; - struct generic_bl_info *machinfo = pdev->dev.platform_data; + struct generic_bl_info *machinfo = dev_get_platdata(&pdev->dev); const char *name = "generic-bl"; struct backlight_device *bd; @@ -93,8 +93,8 @@ static int genericbl_probe(struct platform_device *pdev) memset(&props, 0, sizeof(struct backlight_properties)); props.type = BACKLIGHT_RAW; props.max_brightness = machinfo->max_intensity; - bd = backlight_device_register(name, &pdev->dev, NULL, &genericbl_ops, - &props); + bd = devm_backlight_device_register(&pdev->dev, name, &pdev->dev, + NULL, &genericbl_ops, &props); if (IS_ERR(bd)) return PTR_ERR(bd); @@ -118,8 +118,6 @@ static int genericbl_remove(struct platform_device *pdev) bd->props.brightness = 0; backlight_update_status(bd); - backlight_device_unregister(bd); - dev_info(&pdev->dev, "Generic Backlight Driver Unloaded\n"); return 0; } diff --git a/drivers/video/backlight/gpio_backlight.c b/drivers/video/backlight/gpio_backlight.c index 5fa217f9f44..81fb12770c2 100644 --- a/drivers/video/backlight/gpio_backlight.c +++ b/drivers/video/backlight/gpio_backlight.c @@ -62,7 +62,8 @@ static const struct backlight_ops gpio_backlight_ops = { static int gpio_backlight_probe(struct platform_device *pdev) { - struct gpio_backlight_platform_data *pdata = pdev->dev.platform_data; + struct gpio_backlight_platform_data *pdata = + dev_get_platdata(&pdev->dev); struct backlight_properties props; struct backlight_device *bl; struct gpio_backlight *gbl; @@ -94,8 +95,9 @@ static int gpio_backlight_probe(struct platform_device *pdev) memset(&props, 0, sizeof(props)); props.type = BACKLIGHT_RAW; props.max_brightness = 1; - bl = backlight_device_register(dev_name(&pdev->dev), &pdev->dev, gbl, - &gpio_backlight_ops, &props); + bl = devm_backlight_device_register(&pdev->dev, dev_name(&pdev->dev), + &pdev->dev, gbl, &gpio_backlight_ops, + &props); if (IS_ERR(bl)) { dev_err(&pdev->dev, "failed to register backlight\n"); return PTR_ERR(bl); @@ -108,21 +110,12 @@ static int gpio_backlight_probe(struct platform_device *pdev) return 0; } -static int gpio_backlight_remove(struct platform_device *pdev) -{ - struct backlight_device *bl = platform_get_drvdata(pdev); - - backlight_device_unregister(bl); - return 0; -} - static struct platform_driver gpio_backlight_driver = { .driver = { .name = "gpio-backlight", .owner = THIS_MODULE, }, .probe = gpio_backlight_probe, - .remove = gpio_backlight_remove, }; module_platform_driver(gpio_backlight_driver); diff --git a/drivers/video/backlight/hx8357.c b/drivers/video/backlight/hx8357.c index c7af8c45ab8..985e854e244 100644 --- a/drivers/video/backlight/hx8357.c +++ b/drivers/video/backlight/hx8357.c @@ -648,7 +648,8 @@ static int hx8357_probe(struct spi_device *spi) lcd->use_im_pins = 0; } - lcdev = lcd_device_register("mxsfb", &spi->dev, lcd, &hx8357_ops); + lcdev = devm_lcd_device_register(&spi->dev, "mxsfb", &spi->dev, lcd, + &hx8357_ops); if (IS_ERR(lcdev)) { ret = PTR_ERR(lcdev); return ret; @@ -660,32 +661,19 @@ static int hx8357_probe(struct spi_device *spi) ret = ((int (*)(struct lcd_device *))match->data)(lcdev); if (ret) { dev_err(&spi->dev, "Couldn't initialize panel\n"); - goto init_error; + return ret; } dev_info(&spi->dev, "Panel probed\n"); return 0; - -init_error: - lcd_device_unregister(lcdev); - return ret; -} - -static int hx8357_remove(struct spi_device *spi) -{ - struct lcd_device *lcdev = spi_get_drvdata(spi); - - lcd_device_unregister(lcdev); - return 0; } static struct spi_driver hx8357_driver = { .probe = hx8357_probe, - .remove = hx8357_remove, .driver = { .name = "hx8357", - .of_match_table = of_match_ptr(hx8357_dt_ids), + .of_match_table = hx8357_dt_ids, }, }; diff --git a/drivers/video/backlight/ili922x.c b/drivers/video/backlight/ili922x.c index d9f65c2d9b0..73464e4b4c7 100644 --- a/drivers/video/backlight/ili922x.c +++ b/drivers/video/backlight/ili922x.c @@ -513,8 +513,8 @@ static int ili922x_probe(struct spi_device *spi) ili->power = FB_BLANK_POWERDOWN; - lcd = lcd_device_register("ili922xlcd", &spi->dev, ili, - &ili922x_ops); + lcd = devm_lcd_device_register(&spi->dev, "ili922xlcd", &spi->dev, ili, + &ili922x_ops); if (IS_ERR(lcd)) { dev_err(&spi->dev, "cannot register LCD\n"); return PTR_ERR(lcd); @@ -530,10 +530,7 @@ static int ili922x_probe(struct spi_device *spi) static int ili922x_remove(struct spi_device *spi) { - struct ili922x *ili = spi_get_drvdata(spi); - ili922x_poweroff(spi); - lcd_device_unregister(ili->ld); return 0; } diff --git a/drivers/video/backlight/ili9320.c b/drivers/video/backlight/ili9320.c index f8be90c5ded..e2b8b40a9bd 100644 --- a/drivers/video/backlight/ili9320.c +++ b/drivers/video/backlight/ili9320.c @@ -198,7 +198,7 @@ static void ili9320_setup_spi(struct ili9320 *ili, int ili9320_probe_spi(struct spi_device *spi, struct ili9320_client *client) { - struct ili9320_platdata *cfg = spi->dev.platform_data; + struct ili9320_platdata *cfg = dev_get_platdata(&spi->dev); struct device *dev = &spi->dev; struct ili9320 *ili; struct lcd_device *lcd; @@ -235,7 +235,8 @@ int ili9320_probe_spi(struct spi_device *spi, ili9320_setup_spi(ili, spi); - lcd = lcd_device_register("ili9320", dev, ili, &ili9320_ops); + lcd = devm_lcd_device_register(&spi->dev, "ili9320", dev, ili, + &ili9320_ops); if (IS_ERR(lcd)) { dev_err(dev, "failed to register lcd device\n"); return PTR_ERR(lcd); @@ -248,24 +249,16 @@ int ili9320_probe_spi(struct spi_device *spi, ret = ili9320_power(ili, FB_BLANK_UNBLANK); if (ret != 0) { dev_err(dev, "failed to set lcd power state\n"); - goto err_unregister; + return ret; } return 0; - - err_unregister: - lcd_device_unregister(lcd); - - return ret; } EXPORT_SYMBOL_GPL(ili9320_probe_spi); int ili9320_remove(struct ili9320 *ili) { ili9320_power(ili, FB_BLANK_POWERDOWN); - - lcd_device_unregister(ili->lcd); - return 0; } EXPORT_SYMBOL_GPL(ili9320_remove); diff --git a/drivers/video/backlight/kb3886_bl.c b/drivers/video/backlight/kb3886_bl.c index bca6ccc74df..7592cc25c96 100644 --- a/drivers/video/backlight/kb3886_bl.c +++ b/drivers/video/backlight/kb3886_bl.c @@ -141,7 +141,7 @@ static const struct backlight_ops kb3886bl_ops = { static int kb3886bl_probe(struct platform_device *pdev) { struct backlight_properties props; - struct kb3886bl_machinfo *machinfo = pdev->dev.platform_data; + struct kb3886bl_machinfo *machinfo = dev_get_platdata(&pdev->dev); bl_machinfo = machinfo; if (!machinfo->limit_mask) @@ -150,10 +150,10 @@ static int kb3886bl_probe(struct platform_device *pdev) memset(&props, 0, sizeof(struct backlight_properties)); props.type = BACKLIGHT_RAW; props.max_brightness = machinfo->max_intensity; - kb3886_backlight_device = backlight_device_register("kb3886-bl", - &pdev->dev, NULL, - &kb3886bl_ops, - &props); + kb3886_backlight_device = devm_backlight_device_register(&pdev->dev, + "kb3886-bl", &pdev->dev, + NULL, &kb3886bl_ops, + &props); if (IS_ERR(kb3886_backlight_device)) return PTR_ERR(kb3886_backlight_device); @@ -166,18 +166,8 @@ static int kb3886bl_probe(struct platform_device *pdev) return 0; } -static int kb3886bl_remove(struct platform_device *pdev) -{ - struct backlight_device *bd = platform_get_drvdata(pdev); - - backlight_device_unregister(bd); - - return 0; -} - static struct platform_driver kb3886bl_driver = { .probe = kb3886bl_probe, - .remove = kb3886bl_remove, .driver = { .name = "kb3886-bl", .pm = &kb3886bl_pm_ops, diff --git a/drivers/video/backlight/l4f00242t03.c b/drivers/video/backlight/l4f00242t03.c index a35a38c709c..b5fc13bc24e 100644 --- a/drivers/video/backlight/l4f00242t03.c +++ b/drivers/video/backlight/l4f00242t03.c @@ -48,7 +48,7 @@ static void l4f00242t03_reset(unsigned int gpio) static void l4f00242t03_lcd_init(struct spi_device *spi) { - struct l4f00242t03_pdata *pdata = spi->dev.platform_data; + struct l4f00242t03_pdata *pdata = dev_get_platdata(&spi->dev); struct l4f00242t03_priv *priv = spi_get_drvdata(spi); const u16 cmd[] = { 0x36, param(0), 0x3A, param(0x60) }; int ret; @@ -88,7 +88,7 @@ static void l4f00242t03_lcd_init(struct spi_device *spi) static void l4f00242t03_lcd_powerdown(struct spi_device *spi) { - struct l4f00242t03_pdata *pdata = spi->dev.platform_data; + struct l4f00242t03_pdata *pdata = dev_get_platdata(&spi->dev); struct l4f00242t03_priv *priv = spi_get_drvdata(spi); dev_dbg(&spi->dev, "Powering down LCD\n"); @@ -171,7 +171,7 @@ static struct lcd_ops l4f_ops = { static int l4f00242t03_probe(struct spi_device *spi) { struct l4f00242t03_priv *priv; - struct l4f00242t03_pdata *pdata = spi->dev.platform_data; + struct l4f00242t03_pdata *pdata = dev_get_platdata(&spi->dev); int ret; if (pdata == NULL) { @@ -244,7 +244,6 @@ static int l4f00242t03_remove(struct spi_device *spi) l4f00242t03_lcd_power_set(priv->ld, FB_BLANK_POWERDOWN); lcd_device_unregister(priv->ld); - spi_set_drvdata(spi, NULL); return 0; } diff --git a/drivers/video/backlight/ld9040.c b/drivers/video/backlight/ld9040.c index 1e0a3093ce5..506a6c23603 100644 --- a/drivers/video/backlight/ld9040.c +++ b/drivers/video/backlight/ld9040.c @@ -702,7 +702,7 @@ static int ld9040_probe(struct spi_device *spi) lcd->spi = spi; lcd->dev = &spi->dev; - lcd->lcd_pd = spi->dev.platform_data; + lcd->lcd_pd = dev_get_platdata(&spi->dev); if (!lcd->lcd_pd) { dev_err(&spi->dev, "platform data is NULL.\n"); return -EINVAL; @@ -716,7 +716,8 @@ static int ld9040_probe(struct spi_device *spi) return ret; } - ld = lcd_device_register("ld9040", &spi->dev, lcd, &ld9040_lcd_ops); + ld = devm_lcd_device_register(&spi->dev, "ld9040", &spi->dev, lcd, + &ld9040_lcd_ops); if (IS_ERR(ld)) return PTR_ERR(ld); @@ -726,12 +727,10 @@ static int ld9040_probe(struct spi_device *spi) props.type = BACKLIGHT_RAW; props.max_brightness = MAX_BRIGHTNESS; - bd = backlight_device_register("ld9040-bl", &spi->dev, - lcd, &ld9040_backlight_ops, &props); - if (IS_ERR(bd)) { - ret = PTR_ERR(bd); - goto out_unregister_lcd; - } + bd = devm_backlight_device_register(&spi->dev, "ld9040-bl", &spi->dev, + lcd, &ld9040_backlight_ops, &props); + if (IS_ERR(bd)) + return PTR_ERR(bd); bd->props.brightness = MAX_BRIGHTNESS; lcd->bd = bd; @@ -757,11 +756,6 @@ static int ld9040_probe(struct spi_device *spi) dev_info(&spi->dev, "ld9040 panel driver has been probed.\n"); return 0; - -out_unregister_lcd: - lcd_device_unregister(lcd->ld); - - return ret; } static int ld9040_remove(struct spi_device *spi) @@ -769,9 +763,6 @@ static int ld9040_remove(struct spi_device *spi) struct ld9040 *lcd = spi_get_drvdata(spi); ld9040_power(lcd, FB_BLANK_POWERDOWN); - backlight_device_unregister(lcd->bd); - lcd_device_unregister(lcd->ld); - return 0; } diff --git a/drivers/video/backlight/ld9040_gamma.h b/drivers/video/backlight/ld9040_gamma.h index 038d9c86ec0..c5e586d9738 100644 --- a/drivers/video/backlight/ld9040_gamma.h +++ b/drivers/video/backlight/ld9040_gamma.h @@ -169,7 +169,9 @@ static const unsigned int ld9040_22_50[] = { struct ld9040_gamma { unsigned int *gamma_22_table[MAX_GAMMA_LEVEL]; -} gamma_table = { +}; + +static struct ld9040_gamma gamma_table = { .gamma_22_table[0] = (unsigned int *)&ld9040_22_50, .gamma_22_table[1] = (unsigned int *)&ld9040_22_70, .gamma_22_table[2] = (unsigned int *)&ld9040_22_80, diff --git a/drivers/video/backlight/lm3533_bl.c b/drivers/video/backlight/lm3533_bl.c index 1d1dbfb789e..187d1c283c1 100644 --- a/drivers/video/backlight/lm3533_bl.c +++ b/drivers/video/backlight/lm3533_bl.c @@ -284,7 +284,7 @@ static int lm3533_bl_probe(struct platform_device *pdev) if (!lm3533) return -EINVAL; - pdata = pdev->dev.platform_data; + pdata = dev_get_platdata(&pdev->dev); if (!pdata) { dev_err(&pdev->dev, "no platform data\n"); return -EINVAL; @@ -313,8 +313,9 @@ static int lm3533_bl_probe(struct platform_device *pdev) props.type = BACKLIGHT_RAW; props.max_brightness = LM3533_BL_MAX_BRIGHTNESS; props.brightness = pdata->default_brightness; - bd = backlight_device_register(pdata->name, pdev->dev.parent, bl, - &lm3533_bl_ops, &props); + bd = devm_backlight_device_register(&pdev->dev, pdata->name, + pdev->dev.parent, bl, &lm3533_bl_ops, + &props); if (IS_ERR(bd)) { dev_err(&pdev->dev, "failed to register backlight device\n"); return PTR_ERR(bd); @@ -328,7 +329,7 @@ static int lm3533_bl_probe(struct platform_device *pdev) ret = sysfs_create_group(&bd->dev.kobj, &lm3533_bl_attribute_group); if (ret < 0) { dev_err(&pdev->dev, "failed to create sysfs attributes\n"); - goto err_unregister; + return ret; } backlight_update_status(bd); @@ -345,8 +346,6 @@ static int lm3533_bl_probe(struct platform_device *pdev) err_sysfs_remove: sysfs_remove_group(&bd->dev.kobj, &lm3533_bl_attribute_group); -err_unregister: - backlight_device_unregister(bd); return ret; } @@ -363,7 +362,6 @@ static int lm3533_bl_remove(struct platform_device *pdev) lm3533_ctrlbank_disable(&bl->cb); sysfs_remove_group(&bd->dev.kobj, &lm3533_bl_attribute_group); - backlight_device_unregister(bd); return 0; } diff --git a/drivers/video/backlight/lm3630_bl.c b/drivers/video/backlight/lm3630_bl.c deleted file mode 100644 index 76a62e978fc..00000000000 --- a/drivers/video/backlight/lm3630_bl.c +++ /dev/null @@ -1,475 +0,0 @@ -/* -* Simple driver for Texas Instruments LM3630 Backlight 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/slab.h> -#include <linux/i2c.h> -#include <linux/backlight.h> -#include <linux/err.h> -#include <linux/delay.h> -#include <linux/uaccess.h> -#include <linux/interrupt.h> -#include <linux/regmap.h> -#include <linux/platform_data/lm3630_bl.h> - -#define REG_CTRL 0x00 -#define REG_CONFIG 0x01 -#define REG_BRT_A 0x03 -#define REG_BRT_B 0x04 -#define REG_INT_STATUS 0x09 -#define REG_INT_EN 0x0A -#define REG_FAULT 0x0B -#define REG_PWM_OUTLOW 0x12 -#define REG_PWM_OUTHIGH 0x13 -#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 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 regmap *regmap; -}; - -/* initialize chip */ -static int lm3630_chip_init(struct lm3630_chip_data *pchip) -{ - int ret; - 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; - - ret = regmap_update_bits(pchip->regmap, REG_CTRL, 0x80, 0x00); - if (ret < 0) - goto out; - - /* 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; - } - - 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; - -out: - dev_err(pchip->dev, "i2c failed to access register\n"); - return ret; -} - -/* interrupt handling */ -static void lm3630_delayed_func(struct work_struct *work) -{ - int ret; - unsigned int reg_val; - struct lm3630_chip_data *pchip; - - pchip = container_of(work, struct lm3630_chip_data, work.work); - - ret = regmap_read(pchip->regmap, REG_INT_STATUS, ®_val); - if (ret < 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); -} - -static irqreturn_t lm3630_isr_func(int irq, void *chip) -{ - int ret; - struct lm3630_chip_data *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; - - return IRQ_HANDLED; -out: - dev_err(pchip->dev, "i2c failed to access register\n"); - return IRQ_HANDLED; -} - -static int lm3630_intr_config(struct lm3630_chip_data *pchip) -{ - 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"); - 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"); - return -1; - } - return 0; -} - -static bool -set_intensity(struct backlight_device *bl, struct lm3630_chip_data *pchip) -{ - if (!pchip->pdata->pwm_set_intensity) - return false; - pchip->pdata->pwm_set_intensity(bl->props.brightness - 1, - pchip->pdata->pwm_period); - return true; -} - -/* 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); - 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; - 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; - } - return bl->props.brightness; -out: - dev_err(pchip->dev, "i2c failed to access REG_CTRL\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); - 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, ®_val); - if (ret < 0) - goto out; - brightness = reg_val & 0x01; - ret = regmap_read(pchip->regmap, REG_PWM_OUTLOW, ®_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, ®_val); - if (ret < 0) - goto out; - brightness = reg_val + 1; - } - bl->props.brightness = brightness; - return bl->props.brightness; -out: - dev_err(pchip->dev, "i2c failed to access register\n"); - return 0; -} - -static const struct backlight_ops lm3630_bank_a_ops = { - .options = BL_CORE_SUSPENDRESUME, - .update_status = lm3630_bank_a_update_status, - .get_brightness = lm3630_bank_a_get_brightness, -}; - -static int lm3630_bank_b_update_status(struct backlight_device *bl) -{ - int ret; - struct lm3630_chip_data *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); - } - return bl->props.brightness; -out: - dev_err(pchip->dev, "i2c failed to access register\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); - 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, ®_val); - if (ret < 0) - goto out; - brightness = reg_val & 0x01; - ret = regmap_read(pchip->regmap, REG_PWM_OUTLOW, ®_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, ®_val); - if (ret < 0) - goto out; - brightness = reg_val + 1; - } - bl->props.brightness = brightness; - - return bl->props.brightness; -out: - dev_err(pchip->dev, "i2c failed to access register\n"); - return bl->props.brightness; -} - -static const struct backlight_ops lm3630_bank_b_ops = { - .options = BL_CORE_SUSPENDRESUME, - .update_status = lm3630_bank_b_update_status, - .get_brightness = lm3630_bank_b_get_brightness, -}; - -static int lm3630_backlight_register(struct lm3630_chip_data *pchip, - enum lm3630_leds ledno) -{ - 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, - &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, - &lm3630_bank_b_ops, &props); - if (IS_ERR(pchip->bled2)) - return PTR_ERR(pchip->bled2); - break; - } - return 0; -} - -static void lm3630_backlight_unregister(struct lm3630_chip_data *pchip) -{ - if (pchip->bled1) - backlight_device_unregister(pchip->bled1); - if (pchip->bled2) - backlight_device_unregister(pchip->bled2); -} - -static const struct regmap_config lm3630_regmap = { - .reg_bits = 8, - .val_bits = 8, - .max_register = REG_MAX, -}; - -static int lm3630_probe(struct i2c_client *client, - const struct i2c_device_id *id) -{ - struct lm3630_platform_data *pdata = client->dev.platform_data; - struct lm3630_chip_data *pchip; - int ret; - - if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { - 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), - 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; - } - i2c_set_clientdata(client, pchip); - - /* chip initialize */ - ret = lm3630_chip_init(pchip); - if (ret < 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; - } - - if (ret < 0) - goto err_bl_reg; - - if (pdata->bank_b_ctrl && pchip->bled2 == NULL) { - ret = lm3630_backlight_register(pchip, BLED_2); - if (ret < 0) - goto err_bl_reg; - } - - /* 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; -} - -static int lm3630_remove(struct i2c_client *client) -{ - int ret; - struct lm3630_chip_data *pchip = i2c_get_clientdata(client); - - ret = regmap_write(pchip->regmap, REG_BRT_A, 0); - if (ret < 0) - dev_err(pchip->dev, "i2c failed to access register\n"); - - ret = regmap_write(pchip->regmap, REG_BRT_B, 0); - if (ret < 0) - dev_err(pchip->dev, "i2c failed to access register\n"); - - lm3630_backlight_unregister(pchip); - if (pchip->irq) { - free_irq(pchip->irq, pchip); - flush_workqueue(pchip->irqthread); - destroy_workqueue(pchip->irqthread); - } - return 0; -} - -static const struct i2c_device_id lm3630_id[] = { - {LM3630_NAME, 0}, - {} -}; - -MODULE_DEVICE_TABLE(i2c, lm3630_id); - -static struct i2c_driver lm3630_i2c_driver = { - .driver = { - .name = LM3630_NAME, - }, - .probe = lm3630_probe, - .remove = lm3630_remove, - .id_table = lm3630_id, -}; - -module_i2c_driver(lm3630_i2c_driver); - -MODULE_DESCRIPTION("Texas Instruments Backlight driver for LM3630"); -MODULE_AUTHOR("G.Shark Jeong <gshark.jeong@gmail.com>"); -MODULE_AUTHOR("Daniel Jeong <daniel.jeong@ti.com>"); -MODULE_LICENSE("GPL v2"); diff --git a/drivers/video/backlight/lm3630a_bl.c b/drivers/video/backlight/lm3630a_bl.c new file mode 100644 index 00000000000..35fe4825a45 --- /dev/null +++ b/drivers/video/backlight/lm3630a_bl.c @@ -0,0 +1,483 @@ +/* +* 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 +* 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/slab.h> +#include <linux/i2c.h> +#include <linux/backlight.h> +#include <linux/err.h> +#include <linux/delay.h> +#include <linux/uaccess.h> +#include <linux/interrupt.h> +#include <linux/regmap.h> +#include <linux/pwm.h> +#include <linux/platform_data/lm3630a_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 +#define REG_PWM_OUTLOW 0x12 +#define REG_PWM_OUTHIGH 0x13 +#define REG_MAX 0x1F + +#define INT_DEBOUNCE_MSEC 10 +struct lm3630a_chip { + struct device *dev; + struct delayed_work work; + + int irq; + struct workqueue_struct *irqthread; + struct lm3630a_platform_data *pdata; + struct backlight_device *bleda; + struct backlight_device *bledb; + struct regmap *regmap; + struct pwm_device *pwmd; +}; + +/* i2c access */ +static int lm3630a_read(struct lm3630a_chip *pchip, unsigned int reg) +{ + int rval; + unsigned int reg_val; + + rval = regmap_read(pchip->regmap, reg, ®_val); + if (rval < 0) + return rval; + return reg_val & 0xFF; +} + +static int lm3630a_write(struct lm3630a_chip *pchip, + unsigned int reg, unsigned int data) +{ + return regmap_write(pchip->regmap, reg, data); +} + +static int lm3630a_update(struct lm3630a_chip *pchip, + unsigned int reg, unsigned int mask, + unsigned int data) +{ + return regmap_update_bits(pchip->regmap, reg, mask, data); +} + +/* initialize chip */ +static int lm3630a_chip_init(struct lm3630a_chip *pchip) +{ + int rval; + struct lm3630a_platform_data *pdata = pchip->pdata; + + usleep_range(1000, 2000); + /* set Filter Strength Register */ + rval = lm3630a_write(pchip, 0x50, 0x03); + /* set Cofig. register */ + rval |= lm3630a_update(pchip, REG_CONFIG, 0x07, pdata->pwm_ctrl); + /* set boost control */ + rval |= lm3630a_write(pchip, REG_BOOST, 0x38); + /* set current A */ + rval |= lm3630a_update(pchip, REG_I_A, 0x1F, 0x1F); + /* set current B */ + rval |= lm3630a_write(pchip, REG_I_B, 0x1F); + /* set control */ + rval |= lm3630a_update(pchip, REG_CTRL, 0x14, pdata->leda_ctrl); + rval |= lm3630a_update(pchip, REG_CTRL, 0x0B, pdata->ledb_ctrl); + usleep_range(1000, 2000); + /* set brightness A and B */ + rval |= lm3630a_write(pchip, REG_BRT_A, pdata->leda_init_brt); + rval |= lm3630a_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 lm3630a_delayed_func(struct work_struct *work) +{ + int rval; + struct lm3630a_chip *pchip; + + pchip = container_of(work, struct lm3630a_chip, work.work); + + rval = lm3630a_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", rval); +} + +static irqreturn_t lm3630a_isr_func(int irq, void *chip) +{ + int rval; + struct lm3630a_chip *pchip = chip; + unsigned long delay = msecs_to_jiffies(INT_DEBOUNCE_MSEC); + + queue_delayed_work(pchip->irqthread, &pchip->work, delay); + + rval = lm3630a_update(pchip, REG_CTRL, 0x80, 0x00); + if (rval < 0) { + dev_err(pchip->dev, "i2c failed to access register\n"); + return IRQ_NONE; + } + return IRQ_HANDLED; +} + +static int lm3630a_intr_config(struct lm3630a_chip *pchip) +{ + int rval; + + rval = lm3630a_write(pchip, REG_INT_EN, 0x87); + if (rval < 0) + return rval; + + INIT_DELAYED_WORK(&pchip->work, lm3630a_delayed_func); + pchip->irqthread = create_singlethread_workqueue("lm3630a-irqthd"); + if (!pchip->irqthread) { + dev_err(pchip->dev, "create irq thread fail\n"); + return -ENOMEM; + } + if (request_threaded_irq + (pchip->irq, NULL, lm3630a_isr_func, + IRQF_TRIGGER_FALLING | IRQF_ONESHOT, "lm3630a_irq", pchip)) { + dev_err(pchip->dev, "request threaded irq fail\n"); + destroy_workqueue(pchip->irqthread); + return -ENOMEM; + } + return rval; +} + +static void lm3630a_pwm_ctrl(struct lm3630a_chip *pchip, int br, int br_max) +{ + 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 lm3630a_bank_a_update_status(struct backlight_device *bl) +{ + int ret; + struct lm3630a_chip *pchip = bl_get_data(bl); + enum lm3630a_pwm_ctrl pwm_ctrl = pchip->pdata->pwm_ctrl; + + /* pwm control */ + if ((pwm_ctrl & LM3630A_PWM_BANK_A) != 0) { + lm3630a_pwm_ctrl(pchip, bl->props.brightness, + bl->props.max_brightness); + return bl->props.brightness; + } + + /* disable sleep */ + ret = lm3630a_update(pchip, REG_CTRL, 0x80, 0x00); + if (ret < 0) + goto out_i2c_err; + usleep_range(1000, 2000); + /* minimum brightness is 0x04 */ + ret = lm3630a_write(pchip, REG_BRT_A, bl->props.brightness); + if (bl->props.brightness < 0x4) + ret |= lm3630a_update(pchip, REG_CTRL, LM3630A_LEDA_ENABLE, 0); + else + ret |= lm3630a_update(pchip, REG_CTRL, + LM3630A_LEDA_ENABLE, LM3630A_LEDA_ENABLE); + if (ret < 0) + goto out_i2c_err; + return bl->props.brightness; + +out_i2c_err: + dev_err(pchip->dev, "i2c failed to access\n"); + return bl->props.brightness; +} + +static int lm3630a_bank_a_get_brightness(struct backlight_device *bl) +{ + int brightness, rval; + struct lm3630a_chip *pchip = bl_get_data(bl); + enum lm3630a_pwm_ctrl pwm_ctrl = pchip->pdata->pwm_ctrl; + + if ((pwm_ctrl & LM3630A_PWM_BANK_A) != 0) { + rval = lm3630a_read(pchip, REG_PWM_OUTHIGH); + if (rval < 0) + goto out_i2c_err; + brightness = (rval & 0x01) << 8; + rval = lm3630a_read(pchip, REG_PWM_OUTLOW); + if (rval < 0) + goto out_i2c_err; + brightness |= rval; + goto out; + } + + /* disable sleep */ + rval = lm3630a_update(pchip, REG_CTRL, 0x80, 0x00); + if (rval < 0) + goto out_i2c_err; + usleep_range(1000, 2000); + rval = lm3630a_read(pchip, REG_BRT_A); + if (rval < 0) + goto out_i2c_err; + brightness = rval; + +out: + 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 lm3630a_bank_a_ops = { + .options = BL_CORE_SUSPENDRESUME, + .update_status = lm3630a_bank_a_update_status, + .get_brightness = lm3630a_bank_a_get_brightness, +}; + +/* update and get brightness */ +static int lm3630a_bank_b_update_status(struct backlight_device *bl) +{ + int ret; + struct lm3630a_chip *pchip = bl_get_data(bl); + enum lm3630a_pwm_ctrl pwm_ctrl = pchip->pdata->pwm_ctrl; + + /* pwm control */ + if ((pwm_ctrl & LM3630A_PWM_BANK_B) != 0) { + lm3630a_pwm_ctrl(pchip, bl->props.brightness, + bl->props.max_brightness); + return bl->props.brightness; + } + + /* disable sleep */ + ret = lm3630a_update(pchip, REG_CTRL, 0x80, 0x00); + if (ret < 0) + goto out_i2c_err; + usleep_range(1000, 2000); + /* minimum brightness is 0x04 */ + ret = lm3630a_write(pchip, REG_BRT_B, bl->props.brightness); + if (bl->props.brightness < 0x4) + ret |= lm3630a_update(pchip, REG_CTRL, LM3630A_LEDB_ENABLE, 0); + else + ret |= lm3630a_update(pchip, REG_CTRL, + LM3630A_LEDB_ENABLE, LM3630A_LEDB_ENABLE); + if (ret < 0) + goto out_i2c_err; + return bl->props.brightness; + +out_i2c_err: + dev_err(pchip->dev, "i2c failed to access REG_CTRL\n"); + return bl->props.brightness; +} + +static int lm3630a_bank_b_get_brightness(struct backlight_device *bl) +{ + int brightness, rval; + struct lm3630a_chip *pchip = bl_get_data(bl); + enum lm3630a_pwm_ctrl pwm_ctrl = pchip->pdata->pwm_ctrl; + + if ((pwm_ctrl & LM3630A_PWM_BANK_B) != 0) { + rval = lm3630a_read(pchip, REG_PWM_OUTHIGH); + if (rval < 0) + goto out_i2c_err; + brightness = (rval & 0x01) << 8; + rval = lm3630a_read(pchip, REG_PWM_OUTLOW); + if (rval < 0) + goto out_i2c_err; + brightness |= rval; + goto out; + } + + /* disable sleep */ + rval = lm3630a_update(pchip, REG_CTRL, 0x80, 0x00); + if (rval < 0) + goto out_i2c_err; + usleep_range(1000, 2000); + rval = lm3630a_read(pchip, REG_BRT_B); + if (rval < 0) + goto out_i2c_err; + brightness = rval; + +out: + 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 lm3630a_bank_b_ops = { + .options = BL_CORE_SUSPENDRESUME, + .update_status = lm3630a_bank_b_update_status, + .get_brightness = lm3630a_bank_b_get_brightness, +}; + +static int lm3630a_backlight_register(struct lm3630a_chip *pchip) +{ + struct backlight_properties props; + struct lm3630a_platform_data *pdata = pchip->pdata; + + props.type = BACKLIGHT_RAW; + if (pdata->leda_ctrl != LM3630A_LEDA_DISABLE) { + props.brightness = pdata->leda_init_brt; + props.max_brightness = pdata->leda_max_brt; + pchip->bleda = + devm_backlight_device_register(pchip->dev, "lm3630a_leda", + pchip->dev, pchip, + &lm3630a_bank_a_ops, &props); + if (IS_ERR(pchip->bleda)) + return PTR_ERR(pchip->bleda); + } + + if ((pdata->ledb_ctrl != LM3630A_LEDB_DISABLE) && + (pdata->ledb_ctrl != LM3630A_LEDB_ON_A)) { + props.brightness = pdata->ledb_init_brt; + props.max_brightness = pdata->ledb_max_brt; + pchip->bledb = + devm_backlight_device_register(pchip->dev, "lm3630a_ledb", + pchip->dev, pchip, + &lm3630a_bank_b_ops, &props); + if (IS_ERR(pchip->bledb)) + return PTR_ERR(pchip->bledb); + } + return 0; +} + +static const struct regmap_config lm3630a_regmap = { + .reg_bits = 8, + .val_bits = 8, + .max_register = REG_MAX, +}; + +static int lm3630a_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct lm3630a_platform_data *pdata = dev_get_platdata(&client->dev); + struct lm3630a_chip *pchip; + int rval; + + if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { + dev_err(&client->dev, "fail : i2c functionality check\n"); + return -EOPNOTSUPP; + } + + pchip = devm_kzalloc(&client->dev, sizeof(struct lm3630a_chip), + GFP_KERNEL); + if (!pchip) + return -ENOMEM; + pchip->dev = &client->dev; + + pchip->regmap = devm_regmap_init_i2c(client, &lm3630a_regmap); + if (IS_ERR(pchip->regmap)) { + 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) { + pdata = devm_kzalloc(pchip->dev, + sizeof(struct lm3630a_platform_data), + GFP_KERNEL); + if (pdata == NULL) + return -ENOMEM; + /* default values */ + pdata->leda_ctrl = LM3630A_LEDA_ENABLE; + pdata->ledb_ctrl = LM3630A_LEDB_ENABLE; + pdata->leda_max_brt = LM3630A_MAX_BRIGHTNESS; + pdata->ledb_max_brt = LM3630A_MAX_BRIGHTNESS; + pdata->leda_init_brt = LM3630A_MAX_BRIGHTNESS; + pdata->ledb_init_brt = LM3630A_MAX_BRIGHTNESS; + } + pchip->pdata = pdata; + + /* chip initialize */ + rval = lm3630a_chip_init(pchip); + if (rval < 0) { + dev_err(&client->dev, "fail : init chip\n"); + return rval; + } + /* backlight register */ + rval = lm3630a_backlight_register(pchip); + if (rval < 0) { + dev_err(&client->dev, "fail : backlight register.\n"); + return rval; + } + /* pwm */ + if (pdata->pwm_ctrl != LM3630A_PWM_DISABLE) { + pchip->pwmd = devm_pwm_get(pchip->dev, "lm3630a-pwm"); + if (IS_ERR(pchip->pwmd)) { + dev_err(&client->dev, "fail : get pwm device\n"); + return PTR_ERR(pchip->pwmd); + } + } + pchip->pwmd->period = pdata->pwm_period; + + /* interrupt enable : irq 0 is not allowed */ + pchip->irq = client->irq; + if (pchip->irq) { + rval = lm3630a_intr_config(pchip); + if (rval < 0) + return rval; + } + dev_info(&client->dev, "LM3630A backlight register OK.\n"); + return 0; +} + +static int lm3630a_remove(struct i2c_client *client) +{ + int rval; + struct lm3630a_chip *pchip = i2c_get_clientdata(client); + + rval = lm3630a_write(pchip, REG_BRT_A, 0); + if (rval < 0) + dev_err(pchip->dev, "i2c failed to access register\n"); + + rval = lm3630a_write(pchip, REG_BRT_B, 0); + if (rval < 0) + dev_err(pchip->dev, "i2c failed to access register\n"); + + if (pchip->irq) { + free_irq(pchip->irq, pchip); + flush_workqueue(pchip->irqthread); + destroy_workqueue(pchip->irqthread); + } + return 0; +} + +static const struct i2c_device_id lm3630a_id[] = { + {LM3630A_NAME, 0}, + {} +}; + +MODULE_DEVICE_TABLE(i2c, lm3630a_id); + +static struct i2c_driver lm3630a_i2c_driver = { + .driver = { + .name = LM3630A_NAME, + }, + .probe = lm3630a_probe, + .remove = lm3630a_remove, + .id_table = lm3630a_id, +}; + +module_i2c_driver(lm3630a_i2c_driver); + +MODULE_DESCRIPTION("Texas Instruments Backlight driver for LM3630A"); +MODULE_AUTHOR("Daniel Jeong <gshark.jeong@gmail.com>"); +MODULE_AUTHOR("LDD MLP <ldd-mlp@list.ti.com>"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/video/backlight/lm3639_bl.c b/drivers/video/backlight/lm3639_bl.c index 053964da8dd..6fd60adf922 100644 --- a/drivers/video/backlight/lm3639_bl.c +++ b/drivers/video/backlight/lm3639_bl.c @@ -76,10 +76,13 @@ static int lm3639_chip_init(struct lm3639_chip_data *pchip) goto out; /* output pins config. */ - if (!pdata->init_brt_led) - reg_val = pdata->fled_pins | pdata->bled_pins; - else - reg_val = pdata->fled_pins | pdata->bled_pins | 0x01; + if (!pdata->init_brt_led) { + reg_val = pdata->fled_pins; + reg_val |= pdata->bled_pins; + } else { + reg_val = pdata->fled_pins; + reg_val |= pdata->bled_pins | 0x01; + } ret = regmap_update_bits(pchip->regmap, REG_ENABLE, 0x79, reg_val); if (ret < 0) @@ -304,7 +307,7 @@ static int lm3639_probe(struct i2c_client *client, { int ret; struct lm3639_chip_data *pchip; - struct lm3639_platform_data *pdata = client->dev.platform_data; + struct lm3639_platform_data *pdata = dev_get_platdata(&client->dev); struct backlight_properties props; if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { diff --git a/drivers/video/backlight/lms283gf05.c b/drivers/video/backlight/lms283gf05.c index 4eec47261cd..de8832504f6 100644 --- a/drivers/video/backlight/lms283gf05.c +++ b/drivers/video/backlight/lms283gf05.c @@ -128,7 +128,7 @@ static int lms283gf05_power_set(struct lcd_device *ld, int power) { struct lms283gf05_state *st = lcd_get_data(ld); struct spi_device *spi = st->spi; - struct lms283gf05_pdata *pdata = spi->dev.platform_data; + struct lms283gf05_pdata *pdata = dev_get_platdata(&spi->dev); if (power <= FB_BLANK_NORMAL) { if (pdata) @@ -153,7 +153,7 @@ static struct lcd_ops lms_ops = { static int lms283gf05_probe(struct spi_device *spi) { struct lms283gf05_state *st; - struct lms283gf05_pdata *pdata = spi->dev.platform_data; + struct lms283gf05_pdata *pdata = dev_get_platdata(&spi->dev); struct lcd_device *ld; int ret = 0; @@ -173,7 +173,8 @@ static int lms283gf05_probe(struct spi_device *spi) return -ENOMEM; } - ld = lcd_device_register("lms283gf05", &spi->dev, st, &lms_ops); + ld = devm_lcd_device_register(&spi->dev, "lms283gf05", &spi->dev, st, + &lms_ops); if (IS_ERR(ld)) return PTR_ERR(ld); @@ -190,22 +191,12 @@ static int lms283gf05_probe(struct spi_device *spi) return 0; } -static int lms283gf05_remove(struct spi_device *spi) -{ - struct lms283gf05_state *st = spi_get_drvdata(spi); - - lcd_device_unregister(st->ld); - - return 0; -} - static struct spi_driver lms283gf05_driver = { .driver = { .name = "lms283gf05", .owner = THIS_MODULE, }, .probe = lms283gf05_probe, - .remove = lms283gf05_remove, }; module_spi_driver(lms283gf05_driver); diff --git a/drivers/video/backlight/lms501kf03.c b/drivers/video/backlight/lms501kf03.c index cf01b9ac813..77258b7b04b 100644 --- a/drivers/video/backlight/lms501kf03.c +++ b/drivers/video/backlight/lms501kf03.c @@ -344,14 +344,14 @@ static int lms501kf03_probe(struct spi_device *spi) lcd->spi = spi; lcd->dev = &spi->dev; - lcd->lcd_pd = spi->dev.platform_data; + lcd->lcd_pd = dev_get_platdata(&spi->dev); if (!lcd->lcd_pd) { dev_err(&spi->dev, "platform data is NULL\n"); return -EINVAL; } - ld = lcd_device_register("lms501kf03", &spi->dev, lcd, - &lms501kf03_lcd_ops); + ld = devm_lcd_device_register(&spi->dev, "lms501kf03", &spi->dev, lcd, + &lms501kf03_lcd_ops); if (IS_ERR(ld)) return PTR_ERR(ld); @@ -382,8 +382,6 @@ static int lms501kf03_remove(struct spi_device *spi) struct lms501kf03 *lcd = spi_get_drvdata(spi); lms501kf03_power(lcd, FB_BLANK_POWERDOWN); - lcd_device_unregister(lcd->ld); - return 0; } diff --git a/drivers/video/backlight/lp855x_bl.c b/drivers/video/backlight/lp855x_bl.c index c0b41f13bd4..cae80d555e8 100644 --- a/drivers/video/backlight/lp855x_bl.c +++ b/drivers/video/backlight/lp855x_bl.c @@ -26,13 +26,15 @@ #define LP8556_EPROM_START 0xA0 #define LP8556_EPROM_END 0xAF -/* LP8557 Registers */ +/* LP8555/7 Registers */ #define LP8557_BL_CMD 0x00 #define LP8557_BL_MASK 0x01 #define LP8557_BL_ON 0x01 #define LP8557_BL_OFF 0x00 #define LP8557_BRIGHTNESS_CTRL 0x04 #define LP8557_CONFIG 0x10 +#define LP8555_EPROM_START 0x10 +#define LP8555_EPROM_END 0x7A #define LP8557_EPROM_START 0x10 #define LP8557_EPROM_END 0x1E @@ -111,6 +113,10 @@ static bool lp855x_is_valid_rom_area(struct lp855x *lp, u8 addr) start = LP8556_EPROM_START; end = LP8556_EPROM_END; break; + case LP8555: + start = LP8555_EPROM_START; + end = LP8555_EPROM_END; + break; case LP8557: start = LP8557_EPROM_START; end = LP8557_EPROM_END; @@ -165,9 +171,14 @@ static int lp855x_configure(struct lp855x *lp) struct lp855x_platform_data *pd = lp->pdata; switch (lp->chip_id) { - case LP8550 ... LP8556: + case LP8550: + case LP8551: + case LP8552: + case LP8553: + case LP8556: lp->cfg = &lp855x_dev_cfg; break; + case LP8555: case LP8557: lp->cfg = &lp8557_dev_cfg; break; @@ -289,7 +300,7 @@ static int lp855x_backlight_register(struct lp855x *lp) props.brightness = pdata->initial_brightness; - bl = backlight_device_register(name, lp->dev, lp, + bl = devm_backlight_device_register(lp->dev, name, lp->dev, lp, &lp855x_bl_ops, &props); if (IS_ERR(bl)) return PTR_ERR(bl); @@ -299,12 +310,6 @@ static int lp855x_backlight_register(struct lp855x *lp) return 0; } -static void lp855x_backlight_unregister(struct lp855x *lp) -{ - if (lp->bl) - backlight_device_unregister(lp->bl); -} - static ssize_t lp855x_get_chip_id(struct device *dev, struct device_attribute *attr, char *buf) { @@ -394,7 +399,7 @@ static int lp855x_parse_dt(struct device *dev, struct device_node *node) static int lp855x_probe(struct i2c_client *cl, const struct i2c_device_id *id) { struct lp855x *lp; - struct lp855x_platform_data *pdata = cl->dev.platform_data; + struct lp855x_platform_data *pdata = dev_get_platdata(&cl->dev); struct device_node *node = cl->dev.of_node; int ret; @@ -403,7 +408,7 @@ static int lp855x_probe(struct i2c_client *cl, const struct i2c_device_id *id) if (ret < 0) return ret; - pdata = cl->dev.platform_data; + pdata = dev_get_platdata(&cl->dev); } if (!i2c_check_functionality(cl->adapter, I2C_FUNC_SMBUS_I2C_BLOCK)) @@ -428,29 +433,24 @@ static int lp855x_probe(struct i2c_client *cl, const struct i2c_device_id *id) ret = lp855x_configure(lp); if (ret) { dev_err(lp->dev, "device config err: %d", ret); - goto err_dev; + return ret; } ret = lp855x_backlight_register(lp); if (ret) { dev_err(lp->dev, "failed to register backlight. err: %d\n", ret); - goto err_dev; + return ret; } ret = sysfs_create_group(&lp->dev->kobj, &lp855x_attr_group); if (ret) { dev_err(lp->dev, "failed to register sysfs. err: %d\n", ret); - goto err_sysfs; + return ret; } backlight_update_status(lp->bl); return 0; - -err_sysfs: - lp855x_backlight_unregister(lp); -err_dev: - return ret; } static int lp855x_remove(struct i2c_client *cl) @@ -460,7 +460,6 @@ static int lp855x_remove(struct i2c_client *cl) lp->bl->props.brightness = 0; backlight_update_status(lp->bl); sysfs_remove_group(&lp->dev->kobj, &lp855x_attr_group); - lp855x_backlight_unregister(lp); return 0; } @@ -470,6 +469,7 @@ static const struct of_device_id lp855x_dt_ids[] = { { .compatible = "ti,lp8551", }, { .compatible = "ti,lp8552", }, { .compatible = "ti,lp8553", }, + { .compatible = "ti,lp8555", }, { .compatible = "ti,lp8556", }, { .compatible = "ti,lp8557", }, { } @@ -481,6 +481,7 @@ static const struct i2c_device_id lp855x_ids[] = { {"lp8551", LP8551}, {"lp8552", LP8552}, {"lp8553", LP8553}, + {"lp8555", LP8555}, {"lp8556", LP8556}, {"lp8557", LP8557}, { } diff --git a/drivers/video/backlight/lp8788_bl.c b/drivers/video/backlight/lp8788_bl.c index 980855ec9bb..e49905d495d 100644 --- a/drivers/video/backlight/lp8788_bl.c +++ b/drivers/video/backlight/lp8788_bl.c @@ -52,7 +52,7 @@ struct lp8788_bl { struct pwm_device *pwm; }; -struct lp8788_bl_config default_bl_config = { +static struct lp8788_bl_config default_bl_config = { .bl_mode = LP8788_BL_REGISTER_ONLY, .dim_mode = LP8788_DIM_EXPONENTIAL, .full_scale = LP8788_FULLSCALE_1900uA, diff --git a/drivers/video/backlight/ltv350qv.c b/drivers/video/backlight/ltv350qv.c index ed1b3926813..383f550e165 100644 --- a/drivers/video/backlight/ltv350qv.c +++ b/drivers/video/backlight/ltv350qv.c @@ -242,7 +242,8 @@ static int ltv350qv_probe(struct spi_device *spi) if (!lcd->buffer) return -ENOMEM; - ld = lcd_device_register("ltv350qv", &spi->dev, lcd, <v_ops); + ld = devm_lcd_device_register(&spi->dev, "ltv350qv", &spi->dev, lcd, + <v_ops); if (IS_ERR(ld)) return PTR_ERR(ld); @@ -250,15 +251,11 @@ static int ltv350qv_probe(struct spi_device *spi) ret = ltv350qv_power(lcd, FB_BLANK_UNBLANK); if (ret) - goto out_unregister; + return ret; spi_set_drvdata(spi, lcd); return 0; - -out_unregister: - lcd_device_unregister(ld); - return ret; } static int ltv350qv_remove(struct spi_device *spi) @@ -266,8 +263,6 @@ static int ltv350qv_remove(struct spi_device *spi) struct ltv350qv *lcd = spi_get_drvdata(spi); ltv350qv_power(lcd, FB_BLANK_POWERDOWN); - lcd_device_unregister(lcd->ld); - return 0; } diff --git a/drivers/video/backlight/lv5207lp.c b/drivers/video/backlight/lv5207lp.c index 498fd73d59b..1802b2d1357 100644 --- a/drivers/video/backlight/lv5207lp.c +++ b/drivers/video/backlight/lv5207lp.c @@ -93,7 +93,7 @@ static const struct backlight_ops lv5207lp_backlight_ops = { static int lv5207lp_probe(struct i2c_client *client, const struct i2c_device_id *id) { - struct lv5207lp_platform_data *pdata = client->dev.platform_data; + struct lv5207lp_platform_data *pdata = dev_get_platdata(&client->dev); struct backlight_device *backlight; struct backlight_properties props; struct lv5207lp *lv; @@ -124,9 +124,9 @@ static int lv5207lp_probe(struct i2c_client *client, props.brightness = clamp_t(unsigned int, pdata->def_value, 0, props.max_brightness); - backlight = backlight_device_register(dev_name(&client->dev), - &lv->client->dev, lv, - &lv5207lp_backlight_ops, &props); + backlight = devm_backlight_device_register(&client->dev, + dev_name(&client->dev), &lv->client->dev, + lv, &lv5207lp_backlight_ops, &props); if (IS_ERR(backlight)) { dev_err(&client->dev, "failed to register backlight\n"); return PTR_ERR(backlight); @@ -144,7 +144,6 @@ static int lv5207lp_remove(struct i2c_client *client) backlight->props.brightness = 0; backlight_update_status(backlight); - backlight_device_unregister(backlight); return 0; } diff --git a/drivers/video/backlight/max8925_bl.c b/drivers/video/backlight/max8925_bl.c index 886e797f75f..66fa08c920d 100644 --- a/drivers/video/backlight/max8925_bl.c +++ b/drivers/video/backlight/max8925_bl.c @@ -163,7 +163,8 @@ static int max8925_backlight_probe(struct platform_device *pdev) memset(&props, 0, sizeof(struct backlight_properties)); props.type = BACKLIGHT_RAW; props.max_brightness = MAX_BRIGHTNESS; - bl = backlight_device_register("max8925-backlight", &pdev->dev, data, + bl = devm_backlight_device_register(&pdev->dev, "max8925-backlight", + &pdev->dev, data, &max8925_backlight_ops, &props); if (IS_ERR(bl)) { dev_err(&pdev->dev, "failed to register backlight\n"); @@ -188,20 +189,9 @@ static int max8925_backlight_probe(struct platform_device *pdev) } ret = max8925_set_bits(chip->i2c, data->reg_mode_cntl, 0xfe, value); if (ret < 0) - goto out_brt; + return ret; backlight_update_status(bl); return 0; -out_brt: - backlight_device_unregister(bl); - return ret; -} - -static int max8925_backlight_remove(struct platform_device *pdev) -{ - struct backlight_device *bl = platform_get_drvdata(pdev); - - backlight_device_unregister(bl); - return 0; } static struct platform_driver max8925_backlight_driver = { @@ -210,7 +200,6 @@ static struct platform_driver max8925_backlight_driver = { .owner = THIS_MODULE, }, .probe = max8925_backlight_probe, - .remove = max8925_backlight_remove, }; module_platform_driver(max8925_backlight_driver); diff --git a/drivers/video/backlight/omap1_bl.c b/drivers/video/backlight/omap1_bl.c index 812e22e35ca..ac11a4650c1 100644 --- a/drivers/video/backlight/omap1_bl.c +++ b/drivers/video/backlight/omap1_bl.c @@ -133,7 +133,7 @@ static int omapbl_probe(struct platform_device *pdev) struct backlight_properties props; struct backlight_device *dev; struct omap_backlight *bl; - struct omap_backlight_config *pdata = pdev->dev.platform_data; + struct omap_backlight_config *pdata = dev_get_platdata(&pdev->dev); if (!pdata) return -ENXIO; diff --git a/drivers/video/backlight/pandora_bl.c b/drivers/video/backlight/pandora_bl.c index 633b0a22fd6..2098c5d6efb 100644 --- a/drivers/video/backlight/pandora_bl.c +++ b/drivers/video/backlight/pandora_bl.c @@ -120,8 +120,8 @@ static int pandora_backlight_probe(struct platform_device *pdev) memset(&props, 0, sizeof(props)); props.max_brightness = MAX_USER_VALUE; props.type = BACKLIGHT_RAW; - bl = backlight_device_register(pdev->name, &pdev->dev, - NULL, &pandora_backlight_ops, &props); + bl = devm_backlight_device_register(&pdev->dev, pdev->name, &pdev->dev, + NULL, &pandora_backlight_ops, &props); if (IS_ERR(bl)) { dev_err(&pdev->dev, "failed to register backlight\n"); return PTR_ERR(bl); @@ -145,20 +145,12 @@ static int pandora_backlight_probe(struct platform_device *pdev) return 0; } -static int pandora_backlight_remove(struct platform_device *pdev) -{ - struct backlight_device *bl = platform_get_drvdata(pdev); - backlight_device_unregister(bl); - return 0; -} - static struct platform_driver pandora_backlight_driver = { .driver = { .name = "pandora-backlight", .owner = THIS_MODULE, }, .probe = pandora_backlight_probe, - .remove = pandora_backlight_remove, }; module_platform_driver(pandora_backlight_driver); diff --git a/drivers/video/backlight/pcf50633-backlight.c b/drivers/video/backlight/pcf50633-backlight.c index 6ed76be18f1..b95d3b0aaff 100644 --- a/drivers/video/backlight/pcf50633-backlight.c +++ b/drivers/video/backlight/pcf50633-backlight.c @@ -103,7 +103,7 @@ static int pcf50633_bl_probe(struct platform_device *pdev) { struct pcf50633_bl *pcf_bl; struct device *parent = pdev->dev.parent; - struct pcf50633_platform_data *pcf50633_data = parent->platform_data; + struct pcf50633_platform_data *pcf50633_data = dev_get_platdata(parent); struct pcf50633_bl_platform_data *pdata = pcf50633_data->backlight_data; struct backlight_properties bl_props; @@ -126,7 +126,8 @@ static int pcf50633_bl_probe(struct platform_device *pdev) pcf_bl->pcf = dev_to_pcf50633(pdev->dev.parent); - pcf_bl->bl = backlight_device_register(pdev->name, &pdev->dev, pcf_bl, + pcf_bl->bl = devm_backlight_device_register(&pdev->dev, pdev->name, + &pdev->dev, pcf_bl, &pcf50633_bl_ops, &bl_props); if (IS_ERR(pcf_bl->bl)) @@ -147,18 +148,8 @@ static int pcf50633_bl_probe(struct platform_device *pdev) return 0; } -static int pcf50633_bl_remove(struct platform_device *pdev) -{ - struct pcf50633_bl *pcf_bl = platform_get_drvdata(pdev); - - backlight_device_unregister(pcf_bl->bl); - - return 0; -} - static struct platform_driver pcf50633_bl_driver = { .probe = pcf50633_bl_probe, - .remove = pcf50633_bl_remove, .driver = { .name = "pcf50633-backlight", }, diff --git a/drivers/video/backlight/platform_lcd.c b/drivers/video/backlight/platform_lcd.c index 05683670670..d01884d4f1b 100644 --- a/drivers/video/backlight/platform_lcd.c +++ b/drivers/video/backlight/platform_lcd.c @@ -80,7 +80,7 @@ static int platform_lcd_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; int err; - pdata = pdev->dev.platform_data; + pdata = dev_get_platdata(&pdev->dev); if (!pdata) { dev_err(dev, "no platform data supplied\n"); return -EINVAL; @@ -101,30 +101,17 @@ static int platform_lcd_probe(struct platform_device *pdev) plcd->us = dev; plcd->pdata = pdata; - plcd->lcd = lcd_device_register(dev_name(dev), dev, - plcd, &platform_lcd_ops); + plcd->lcd = devm_lcd_device_register(&pdev->dev, dev_name(dev), dev, + plcd, &platform_lcd_ops); if (IS_ERR(plcd->lcd)) { dev_err(dev, "cannot register lcd device\n"); - err = PTR_ERR(plcd->lcd); - goto err; + return PTR_ERR(plcd->lcd); } platform_set_drvdata(pdev, plcd); platform_lcd_set_power(plcd->lcd, FB_BLANK_NORMAL); return 0; - - err: - return err; -} - -static int platform_lcd_remove(struct platform_device *pdev) -{ - struct platform_lcd *plcd = platform_get_drvdata(pdev); - - lcd_device_unregister(plcd->lcd); - - return 0; } #ifdef CONFIG_PM_SLEEP @@ -168,7 +155,6 @@ static struct platform_driver platform_lcd_driver = { .of_match_table = of_match_ptr(platform_lcd_of_match), }, .probe = platform_lcd_probe, - .remove = platform_lcd_remove, }; module_platform_driver(platform_lcd_driver); diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c index 1fea627394d..fb80d68f4d3 100644 --- a/drivers/video/backlight/pwm_bl.c +++ b/drivers/video/backlight/pwm_bl.c @@ -10,6 +10,8 @@ * published by the Free Software Foundation. */ +#include <linux/gpio.h> +#include <linux/of_gpio.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/init.h> @@ -19,6 +21,7 @@ #include <linux/err.h> #include <linux/pwm.h> #include <linux/pwm_backlight.h> +#include <linux/regulator/consumer.h> #include <linux/slab.h> struct pwm_bl_data { @@ -27,6 +30,11 @@ struct pwm_bl_data { unsigned int period; unsigned int lth_brightness; unsigned int *levels; + bool enabled; + struct regulator *power_supply; + int enable_gpio; + unsigned long enable_gpio_flags; + unsigned int scale; int (*notify)(struct device *, int brightness); void (*notify_after)(struct device *, @@ -35,11 +43,65 @@ struct pwm_bl_data { void (*exit)(struct device *); }; +static void pwm_backlight_power_on(struct pwm_bl_data *pb, int brightness) +{ + int err; + + if (pb->enabled) + return; + + err = regulator_enable(pb->power_supply); + if (err < 0) + dev_err(pb->dev, "failed to enable power supply\n"); + + if (gpio_is_valid(pb->enable_gpio)) { + if (pb->enable_gpio_flags & PWM_BACKLIGHT_GPIO_ACTIVE_LOW) + gpio_set_value(pb->enable_gpio, 0); + else + gpio_set_value(pb->enable_gpio, 1); + } + + pwm_enable(pb->pwm); + pb->enabled = true; +} + +static void pwm_backlight_power_off(struct pwm_bl_data *pb) +{ + if (!pb->enabled) + return; + + pwm_config(pb->pwm, 0, pb->period); + pwm_disable(pb->pwm); + + if (gpio_is_valid(pb->enable_gpio)) { + if (pb->enable_gpio_flags & PWM_BACKLIGHT_GPIO_ACTIVE_LOW) + gpio_set_value(pb->enable_gpio, 1); + else + gpio_set_value(pb->enable_gpio, 0); + } + + regulator_disable(pb->power_supply); + pb->enabled = false; +} + +static int compute_duty_cycle(struct pwm_bl_data *pb, int brightness) +{ + unsigned int lth = pb->lth_brightness; + int duty_cycle; + + if (pb->levels) + duty_cycle = pb->levels[brightness]; + else + duty_cycle = brightness; + + return (duty_cycle * (pb->period - lth) / pb->scale) + lth; +} + static int pwm_backlight_update_status(struct backlight_device *bl) { struct pwm_bl_data *pb = bl_get_data(bl); int brightness = bl->props.brightness; - int max = bl->props.max_brightness; + int duty_cycle; if (bl->props.power != FB_BLANK_UNBLANK || bl->props.fb_blank != FB_BLANK_UNBLANK || @@ -49,24 +111,12 @@ static int pwm_backlight_update_status(struct backlight_device *bl) if (pb->notify) brightness = pb->notify(pb->dev, brightness); - if (brightness == 0) { - pwm_config(pb->pwm, 0, pb->period); - pwm_disable(pb->pwm); - } else { - int duty_cycle; - - if (pb->levels) { - duty_cycle = pb->levels[brightness]; - max = pb->levels[max]; - } else { - duty_cycle = brightness; - } - - duty_cycle = pb->lth_brightness + - (duty_cycle * (pb->period - pb->lth_brightness) / max); + if (brightness > 0) { + duty_cycle = compute_duty_cycle(pb, brightness); pwm_config(pb->pwm, duty_cycle, pb->period); - pwm_enable(pb->pwm); - } + pwm_backlight_power_on(pb, brightness); + } else + pwm_backlight_power_off(pb); if (pb->notify_after) pb->notify_after(pb->dev, brightness); @@ -98,6 +148,7 @@ static int pwm_backlight_parse_dt(struct device *dev, struct platform_pwm_backlight_data *data) { struct device_node *node = dev->of_node; + enum of_gpio_flags flags; struct property *prop; int length; u32 value; @@ -138,11 +189,13 @@ static int pwm_backlight_parse_dt(struct device *dev, data->max_brightness--; } - /* - * TODO: Most users of this driver use a number of GPIOs to control - * backlight power. Support for specifying these needs to be - * added. - */ + data->enable_gpio = of_get_named_gpio_flags(node, "enable-gpios", 0, + &flags); + if (data->enable_gpio == -EPROBE_DEFER) + return -EPROBE_DEFER; + + if (gpio_is_valid(data->enable_gpio) && (flags & OF_GPIO_ACTIVE_LOW)) + data->enable_gpio_flags |= PWM_BACKLIGHT_GPIO_ACTIVE_LOW; return 0; } @@ -163,12 +216,11 @@ static int pwm_backlight_parse_dt(struct device *dev, static int pwm_backlight_probe(struct platform_device *pdev) { - struct platform_pwm_backlight_data *data = pdev->dev.platform_data; + struct platform_pwm_backlight_data *data = dev_get_platdata(&pdev->dev); struct platform_pwm_backlight_data defdata; struct backlight_properties props; struct backlight_device *bl; struct pwm_bl_data *pb; - unsigned int max; int ret; if (!data) { @@ -195,16 +247,46 @@ static int pwm_backlight_probe(struct platform_device *pdev) } if (data->levels) { - max = data->levels[data->max_brightness]; + unsigned int i; + + for (i = 0; i <= data->max_brightness; i++) + if (data->levels[i] > pb->scale) + pb->scale = data->levels[i]; + pb->levels = data->levels; } else - max = data->max_brightness; + pb->scale = data->max_brightness; + pb->enable_gpio = data->enable_gpio; + pb->enable_gpio_flags = data->enable_gpio_flags; pb->notify = data->notify; pb->notify_after = data->notify_after; pb->check_fb = data->check_fb; pb->exit = data->exit; pb->dev = &pdev->dev; + pb->enabled = false; + + if (gpio_is_valid(pb->enable_gpio)) { + unsigned long flags; + + if (pb->enable_gpio_flags & PWM_BACKLIGHT_GPIO_ACTIVE_LOW) + flags = GPIOF_OUT_INIT_HIGH; + else + flags = GPIOF_OUT_INIT_LOW; + + ret = gpio_request_one(pb->enable_gpio, flags, "enable"); + if (ret < 0) { + dev_err(&pdev->dev, "failed to request GPIO#%d: %d\n", + pb->enable_gpio, ret); + goto err_alloc; + } + } + + pb->power_supply = devm_regulator_get(&pdev->dev, "power"); + if (IS_ERR(pb->power_supply)) { + ret = PTR_ERR(pb->power_supply); + goto err_gpio; + } pb->pwm = devm_pwm_get(&pdev->dev, NULL); if (IS_ERR(pb->pwm)) { @@ -214,7 +296,7 @@ static int pwm_backlight_probe(struct platform_device *pdev) if (IS_ERR(pb->pwm)) { dev_err(&pdev->dev, "unable to request legacy PWM\n"); ret = PTR_ERR(pb->pwm); - goto err_alloc; + goto err_gpio; } } @@ -229,7 +311,7 @@ static int pwm_backlight_probe(struct platform_device *pdev) pwm_set_period(pb->pwm, data->pwm_period_ns); pb->period = pwm_get_period(pb->pwm); - pb->lth_brightness = data->lth_brightness * (pb->period / max); + pb->lth_brightness = data->lth_brightness * (pb->period / pb->scale); memset(&props, 0, sizeof(struct backlight_properties)); props.type = BACKLIGHT_RAW; @@ -239,7 +321,7 @@ static int pwm_backlight_probe(struct platform_device *pdev) if (IS_ERR(bl)) { dev_err(&pdev->dev, "failed to register backlight\n"); ret = PTR_ERR(bl); - goto err_alloc; + goto err_gpio; } if (data->dft_brightness > data->max_brightness) { @@ -255,6 +337,9 @@ static int pwm_backlight_probe(struct platform_device *pdev) platform_set_drvdata(pdev, bl); return 0; +err_gpio: + if (gpio_is_valid(pb->enable_gpio)) + gpio_free(pb->enable_gpio); err_alloc: if (data->exit) data->exit(&pdev->dev); @@ -267,10 +352,11 @@ static int pwm_backlight_remove(struct platform_device *pdev) struct pwm_bl_data *pb = bl_get_data(bl); backlight_device_unregister(bl); - pwm_config(pb->pwm, 0, pb->period); - pwm_disable(pb->pwm); + pwm_backlight_power_off(pb); + if (pb->exit) pb->exit(&pdev->dev); + return 0; } @@ -282,10 +368,12 @@ static int pwm_backlight_suspend(struct device *dev) if (pb->notify) pb->notify(pb->dev, 0); - pwm_config(pb->pwm, 0, pb->period); - pwm_disable(pb->pwm); + + pwm_backlight_power_off(pb); + if (pb->notify_after) pb->notify_after(pb->dev, 0); + return 0; } @@ -294,12 +382,19 @@ static int pwm_backlight_resume(struct device *dev) struct backlight_device *bl = dev_get_drvdata(dev); backlight_update_status(bl); + return 0; } #endif -static SIMPLE_DEV_PM_OPS(pwm_backlight_pm_ops, pwm_backlight_suspend, - pwm_backlight_resume); +static const struct dev_pm_ops pwm_backlight_pm_ops = { +#ifdef CONFIG_PM_SLEEP + .suspend = pwm_backlight_suspend, + .resume = pwm_backlight_resume, + .poweroff = pwm_backlight_suspend, + .restore = pwm_backlight_resume, +#endif +}; static struct platform_driver pwm_backlight_driver = { .driver = { @@ -317,4 +412,3 @@ module_platform_driver(pwm_backlight_driver); MODULE_DESCRIPTION("PWM based Backlight Driver"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:pwm-backlight"); - diff --git a/drivers/video/backlight/s6e63m0.c b/drivers/video/backlight/s6e63m0.c index b37bb1854bf..510a1bcf76f 100644 --- a/drivers/video/backlight/s6e63m0.c +++ b/drivers/video/backlight/s6e63m0.c @@ -735,13 +735,14 @@ static int s6e63m0_probe(struct spi_device *spi) lcd->spi = spi; lcd->dev = &spi->dev; - lcd->lcd_pd = spi->dev.platform_data; + lcd->lcd_pd = dev_get_platdata(&spi->dev); if (!lcd->lcd_pd) { dev_err(&spi->dev, "platform data is NULL.\n"); return -EINVAL; } - ld = lcd_device_register("s6e63m0", &spi->dev, lcd, &s6e63m0_lcd_ops); + ld = devm_lcd_device_register(&spi->dev, "s6e63m0", &spi->dev, lcd, + &s6e63m0_lcd_ops); if (IS_ERR(ld)) return PTR_ERR(ld); @@ -751,12 +752,11 @@ static int s6e63m0_probe(struct spi_device *spi) props.type = BACKLIGHT_RAW; props.max_brightness = MAX_BRIGHTNESS; - bd = backlight_device_register("s6e63m0bl-bl", &spi->dev, lcd, - &s6e63m0_backlight_ops, &props); - if (IS_ERR(bd)) { - ret = PTR_ERR(bd); - goto out_lcd_unregister; - } + bd = devm_backlight_device_register(&spi->dev, "s6e63m0bl-bl", + &spi->dev, lcd, &s6e63m0_backlight_ops, + &props); + if (IS_ERR(bd)) + return PTR_ERR(bd); bd->props.brightness = MAX_BRIGHTNESS; lcd->bd = bd; @@ -798,10 +798,6 @@ static int s6e63m0_probe(struct spi_device *spi) dev_info(&spi->dev, "s6e63m0 panel driver has been probed.\n"); return 0; - -out_lcd_unregister: - lcd_device_unregister(ld); - return ret; } static int s6e63m0_remove(struct spi_device *spi) @@ -811,8 +807,6 @@ static int s6e63m0_remove(struct spi_device *spi) s6e63m0_power(lcd, FB_BLANK_POWERDOWN); device_remove_file(&spi->dev, &dev_attr_gamma_table); device_remove_file(&spi->dev, &dev_attr_gamma_mode); - backlight_device_unregister(lcd->bd); - lcd_device_unregister(lcd->ld); return 0; } diff --git a/drivers/video/backlight/tdo24m.c b/drivers/video/backlight/tdo24m.c index 18cdf466d50..908016fc582 100644 --- a/drivers/video/backlight/tdo24m.c +++ b/drivers/video/backlight/tdo24m.c @@ -338,7 +338,7 @@ static int tdo24m_probe(struct spi_device *spi) enum tdo24m_model model; int err; - pdata = spi->dev.platform_data; + pdata = dev_get_platdata(&spi->dev); if (pdata) model = pdata->model; else @@ -385,21 +385,17 @@ static int tdo24m_probe(struct spi_device *spi) return -EINVAL; } - lcd->lcd_dev = lcd_device_register("tdo24m", &spi->dev, - lcd, &tdo24m_ops); + lcd->lcd_dev = devm_lcd_device_register(&spi->dev, "tdo24m", &spi->dev, + lcd, &tdo24m_ops); if (IS_ERR(lcd->lcd_dev)) return PTR_ERR(lcd->lcd_dev); spi_set_drvdata(spi, lcd); err = tdo24m_power(lcd, FB_BLANK_UNBLANK); if (err) - goto out_unregister; + return err; return 0; - -out_unregister: - lcd_device_unregister(lcd->lcd_dev); - return err; } static int tdo24m_remove(struct spi_device *spi) @@ -407,8 +403,6 @@ static int tdo24m_remove(struct spi_device *spi) struct tdo24m *lcd = spi_get_drvdata(spi); tdo24m_power(lcd, FB_BLANK_POWERDOWN); - lcd_device_unregister(lcd->lcd_dev); - return 0; } diff --git a/drivers/video/backlight/tosa_bl.c b/drivers/video/backlight/tosa_bl.c index 9df66ac68b3..b8db9338cac 100644 --- a/drivers/video/backlight/tosa_bl.c +++ b/drivers/video/backlight/tosa_bl.c @@ -38,7 +38,7 @@ struct tosa_bl_data { static void tosa_bl_set_backlight(struct tosa_bl_data *data, int brightness) { - struct spi_device *spi = data->i2c->dev.platform_data; + struct spi_device *spi = dev_get_platdata(&data->i2c->dev); i2c_smbus_write_byte_data(data->i2c, DAC_CH1, data->comadj); diff --git a/drivers/video/backlight/tosa_lcd.c b/drivers/video/backlight/tosa_lcd.c index bf081573e5b..be5d636764b 100644 --- a/drivers/video/backlight/tosa_lcd.c +++ b/drivers/video/backlight/tosa_lcd.c @@ -198,7 +198,7 @@ static int tosa_lcd_probe(struct spi_device *spi) ret = devm_gpio_request_one(&spi->dev, TOSA_GPIO_TG_ON, GPIOF_OUT_INIT_LOW, "tg #pwr"); if (ret < 0) - goto err_gpio_tg; + return ret; mdelay(60); @@ -219,8 +219,6 @@ static int tosa_lcd_probe(struct spi_device *spi) err_register: tosa_lcd_tg_off(data); -err_gpio_tg: - spi_set_drvdata(spi, NULL); return ret; } @@ -235,8 +233,6 @@ static int tosa_lcd_remove(struct spi_device *spi) tosa_lcd_tg_off(data); - spi_set_drvdata(spi, NULL); - return 0; } diff --git a/drivers/video/backlight/tps65217_bl.c b/drivers/video/backlight/tps65217_bl.c index 05782312aeb..cbba37e6836 100644 --- a/drivers/video/backlight/tps65217_bl.c +++ b/drivers/video/backlight/tps65217_bl.c @@ -287,12 +287,11 @@ static int tps65217_bl_probe(struct platform_device *pdev) if (IS_ERR(pdata)) return PTR_ERR(pdata); } else { - if (!pdev->dev.platform_data) { + pdata = dev_get_platdata(&pdev->dev); + if (!pdata) { dev_err(&pdev->dev, "no platform data provided\n"); return -EINVAL; } - - pdata = pdev->dev.platform_data; } tps65217_bl = devm_kzalloc(&pdev->dev, sizeof(*tps65217_bl), @@ -314,7 +313,7 @@ static int tps65217_bl_probe(struct platform_device *pdev) bl_props.type = BACKLIGHT_RAW; bl_props.max_brightness = 100; - tps65217_bl->bl = backlight_device_register(pdev->name, + tps65217_bl->bl = devm_backlight_device_register(&pdev->dev, pdev->name, tps65217_bl->dev, tps65217_bl, &tps65217_bl_ops, &bl_props); if (IS_ERR(tps65217_bl->bl)) { @@ -330,18 +329,8 @@ static int tps65217_bl_probe(struct platform_device *pdev) return 0; } -static int tps65217_bl_remove(struct platform_device *pdev) -{ - struct tps65217_bl *tps65217_bl = platform_get_drvdata(pdev); - - backlight_device_unregister(tps65217_bl->bl); - - return 0; -} - static struct platform_driver tps65217_bl_driver = { .probe = tps65217_bl_probe, - .remove = tps65217_bl_remove, .driver = { .owner = THIS_MODULE, .name = "tps65217-bl", diff --git a/drivers/video/backlight/wm831x_bl.c b/drivers/video/backlight/wm831x_bl.c index 9e5517a3a52..8b9455e9306 100644 --- a/drivers/video/backlight/wm831x_bl.c +++ b/drivers/video/backlight/wm831x_bl.c @@ -123,7 +123,7 @@ static const struct backlight_ops wm831x_backlight_ops = { static int wm831x_backlight_probe(struct platform_device *pdev) { struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent); - struct wm831x_pdata *wm831x_pdata; + struct wm831x_pdata *wm831x_pdata = dev_get_platdata(pdev->dev.parent); struct wm831x_backlight_pdata *pdata; struct wm831x_backlight_data *data; struct backlight_device *bl; @@ -131,12 +131,10 @@ static int wm831x_backlight_probe(struct platform_device *pdev) int ret, i, max_isel, isink_reg, dcdc_cfg; /* We need platform data */ - if (pdev->dev.parent->platform_data) { - wm831x_pdata = pdev->dev.parent->platform_data; + if (wm831x_pdata) pdata = wm831x_pdata->backlight; - } else { + else pdata = NULL; - } if (!pdata) { dev_err(&pdev->dev, "No platform data supplied\n"); @@ -197,8 +195,8 @@ static int wm831x_backlight_probe(struct platform_device *pdev) memset(&props, 0, sizeof(props)); props.type = BACKLIGHT_RAW; props.max_brightness = max_isel; - bl = backlight_device_register("wm831x", &pdev->dev, data, - &wm831x_backlight_ops, &props); + bl = devm_backlight_device_register(&pdev->dev, "wm831x", &pdev->dev, + data, &wm831x_backlight_ops, &props); if (IS_ERR(bl)) { dev_err(&pdev->dev, "failed to register backlight\n"); return PTR_ERR(bl); @@ -216,21 +214,12 @@ static int wm831x_backlight_probe(struct platform_device *pdev) return 0; } -static int wm831x_backlight_remove(struct platform_device *pdev) -{ - struct backlight_device *bl = platform_get_drvdata(pdev); - - backlight_device_unregister(bl); - return 0; -} - static struct platform_driver wm831x_backlight_driver = { .driver = { .name = "wm831x-backlight", .owner = THIS_MODULE, }, .probe = wm831x_backlight_probe, - .remove = wm831x_backlight_remove, }; module_platform_driver(wm831x_backlight_driver); |