diff options
Diffstat (limited to 'drivers/video')
27 files changed, 177 insertions, 161 deletions
diff --git a/drivers/video/backlight/88pm860x_bl.c b/drivers/video/backlight/88pm860x_bl.c index b7ec34c57f46..c072ed9aea36 100644 --- a/drivers/video/backlight/88pm860x_bl.c +++ b/drivers/video/backlight/88pm860x_bl.c @@ -117,8 +117,8 @@ static int pm860x_backlight_set(struct backlight_device *bl, int brightness) data->current_brightness = value; return 0; out: - dev_dbg(chip->dev, "set brightness %d failure with return " - "value:%d\n", value, ret); + dev_dbg(chip->dev, "set brightness %d failure with return value: %d\n", + value, ret); return ret; } @@ -208,22 +208,19 @@ static int pm860x_backlight_probe(struct platform_device *pdev) res = platform_get_resource_byname(pdev, IORESOURCE_REG, "duty cycle"); if (!res) { dev_err(&pdev->dev, "No REG resource for duty cycle\n"); - ret = -ENXIO; - goto out; + return -ENXIO; } data->reg_duty_cycle = res->start; res = platform_get_resource_byname(pdev, IORESOURCE_REG, "always on"); if (!res) { dev_err(&pdev->dev, "No REG resorce for always on\n"); - ret = -ENXIO; - goto out; + return -ENXIO; } data->reg_always_on = res->start; res = platform_get_resource_byname(pdev, IORESOURCE_REG, "current"); if (!res) { dev_err(&pdev->dev, "No REG resource for current\n"); - ret = -ENXIO; - goto out; + return -ENXIO; } data->reg_current = res->start; @@ -231,8 +228,7 @@ static int pm860x_backlight_probe(struct platform_device *pdev) sprintf(name, "backlight-%d", pdev->id); data->port = pdev->id; data->chip = chip; - data->i2c = (chip->id == CHIP_PM8606) ? chip->client \ - : chip->companion; + data->i2c = (chip->id == CHIP_PM8606) ? chip->client : chip->companion; data->current_brightness = MAX_BRIGHTNESS; if (pm860x_backlight_dt_init(pdev, data, name)) { if (pdata) { @@ -263,8 +259,6 @@ static int pm860x_backlight_probe(struct platform_device *pdev) return 0; out_brt: backlight_device_unregister(bl); -out: - devm_kfree(&pdev->dev, data); return ret; } diff --git a/drivers/video/backlight/atmel-pwm-bl.c b/drivers/video/backlight/atmel-pwm-bl.c index df1cbb7ef6ca..de5e5e74e2a7 100644 --- a/drivers/video/backlight/atmel-pwm-bl.c +++ b/drivers/video/backlight/atmel-pwm-bl.c @@ -106,10 +106,9 @@ static int atmel_pwm_bl_init_pwm(struct atmel_pwm_bl *pwmbl) pwm_channel_writel(&pwmbl->pwmc, PWM_CPRD, pwmbl->pdata->pwm_compare_max); - dev_info(&pwmbl->pdev->dev, "Atmel PWM backlight driver " - "(%lu Hz)\n", pwmbl->pwmc.mck / - pwmbl->pdata->pwm_compare_max / - (1 << prescale)); + dev_info(&pwmbl->pdev->dev, "Atmel PWM backlight driver (%lu Hz)\n", + pwmbl->pwmc.mck / pwmbl->pdata->pwm_compare_max / + (1 << prescale)); return pwm_channel_enable(&pwmbl->pwmc); } diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/backlight.c index 297db2fa91f5..345f6660d4b3 100644 --- a/drivers/video/backlight/backlight.c +++ b/drivers/video/backlight/backlight.c @@ -370,6 +370,35 @@ void backlight_device_unregister(struct backlight_device *bd) } EXPORT_SYMBOL(backlight_device_unregister); +#ifdef CONFIG_OF +static int of_parent_match(struct device *dev, void *data) +{ + return dev->parent && dev->parent->of_node == data; +} + +/** + * of_find_backlight_by_node() - find backlight device by device-tree node + * @node: device-tree node of the backlight device + * + * Returns a pointer to the backlight device corresponding to the given DT + * node or NULL if no such backlight device exists or if the device hasn't + * been probed yet. + * + * This function obtains a reference on the backlight device and it is the + * caller's responsibility to drop the reference by calling put_device() on + * the backlight device's .dev field. + */ +struct backlight_device *of_find_backlight_by_node(struct device_node *node) +{ + struct device *dev; + + dev = class_find_device(backlight_class, NULL, node, of_parent_match); + + return dev ? to_backlight_device(dev) : NULL; +} +EXPORT_SYMBOL(of_find_backlight_by_node); +#endif + static void __exit backlight_class_exit(void) { class_destroy(backlight_class); diff --git a/drivers/video/backlight/corgi_lcd.c b/drivers/video/backlight/corgi_lcd.c index eaaebf21993e..e323fcbe884e 100644 --- a/drivers/video/backlight/corgi_lcd.c +++ b/drivers/video/backlight/corgi_lcd.c @@ -6,8 +6,8 @@ * Based on Sharp's 2.4 Backlight Driver * * Copyright (c) 2008 Marvell International Ltd. - * Converted to SPI device based LCD/Backlight device driver - * by Eric Miao <eric.miao@marvell.com> + * Converted to SPI device based LCD/Backlight device driver + * by Eric Miao <eric.miao@marvell.com> * * 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 @@ -192,7 +192,7 @@ static void lcdtg_set_phadadj(struct corgi_lcd *lcd, int mode) { int adj; - switch(mode) { + switch (mode) { case CORGI_LCD_MODE_VGA: /* Setting for VGA */ adj = sharpsl_param.phadadj; @@ -409,10 +409,10 @@ static int corgi_bl_set_intensity(struct corgi_lcd *lcd, int intensity) cont = !!(intensity & 0x20) ^ lcd->gpio_backlight_cont_inverted; if (gpio_is_valid(lcd->gpio_backlight_cont)) - gpio_set_value(lcd->gpio_backlight_cont, cont); + gpio_set_value_cansleep(lcd->gpio_backlight_cont, cont); if (gpio_is_valid(lcd->gpio_backlight_on)) - gpio_set_value(lcd->gpio_backlight_on, intensity); + gpio_set_value_cansleep(lcd->gpio_backlight_on, intensity); if (lcd->kick_battery) lcd->kick_battery(); @@ -495,8 +495,9 @@ static int setup_gpio_backlight(struct corgi_lcd *lcd, err = devm_gpio_request(&spi->dev, pdata->gpio_backlight_on, "BL_ON"); if (err) { - dev_err(&spi->dev, "failed to request GPIO%d for " - "backlight_on\n", pdata->gpio_backlight_on); + dev_err(&spi->dev, + "failed to request GPIO%d for backlight_on\n", + pdata->gpio_backlight_on); return err; } @@ -508,8 +509,9 @@ static int setup_gpio_backlight(struct corgi_lcd *lcd, err = devm_gpio_request(&spi->dev, pdata->gpio_backlight_cont, "BL_CONT"); if (err) { - dev_err(&spi->dev, "failed to request GPIO%d for " - "backlight_cont\n", pdata->gpio_backlight_cont); + dev_err(&spi->dev, + "failed to request GPIO%d for backlight_cont\n", + pdata->gpio_backlight_cont); return err; } diff --git a/drivers/video/backlight/da903x_bl.c b/drivers/video/backlight/da903x_bl.c index 573c7ece0fde..8179cef0730f 100644 --- a/drivers/video/backlight/da903x_bl.c +++ b/drivers/video/backlight/da903x_bl.c @@ -2,10 +2,10 @@ * Backlight driver for Dialog Semiconductor DA9030/DA9034 * * Copyright (C) 2008 Compulab, Ltd. - * Mike Rapoport <mike@compulab.co.il> + * Mike Rapoport <mike@compulab.co.il> * * Copyright (C) 2006-2008 Marvell International Ltd. - * Eric Miao <eric.miao@marvell.com> + * Eric Miao <eric.miao@marvell.com> * * 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 @@ -164,15 +164,14 @@ static int da903x_backlight_remove(struct platform_device *pdev) #ifdef CONFIG_PM static int da903x_backlight_suspend(struct device *dev) { - struct platform_device *pdev = to_platform_device(dev); - struct backlight_device *bl = platform_get_drvdata(pdev); + struct backlight_device *bl = dev_get_drvdata(dev); + return da903x_backlight_set(bl, 0); } static int da903x_backlight_resume(struct device *dev) { - struct platform_device *pdev = to_platform_device(dev); - struct backlight_device *bl = platform_get_drvdata(pdev); + struct backlight_device *bl = dev_get_drvdata(dev); backlight_update_status(bl); return 0; @@ -199,7 +198,7 @@ static struct platform_driver da903x_backlight_driver = { module_platform_driver(da903x_backlight_driver); MODULE_DESCRIPTION("Backlight Driver for Dialog Semiconductor DA9030/DA9034"); -MODULE_AUTHOR("Eric Miao <eric.miao@marvell.com>" - "Mike Rapoport <mike@compulab.co.il>"); +MODULE_AUTHOR("Eric Miao <eric.miao@marvell.com>"); +MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:da903x-backlight"); diff --git a/drivers/video/backlight/da9052_bl.c b/drivers/video/backlight/da9052_bl.c index ac196181fe45..842da5a3ac4f 100644 --- a/drivers/video/backlight/da9052_bl.c +++ b/drivers/video/backlight/da9052_bl.c @@ -34,7 +34,7 @@ enum { DA9052_TYPE_WLED3, }; -static unsigned char wled_bank[] = { +static const unsigned char wled_bank[] = { DA9052_LED1_CONF_REG, DA9052_LED2_CONF_REG, DA9052_LED3_CONF_REG, diff --git a/drivers/video/backlight/generic_bl.c b/drivers/video/backlight/generic_bl.c index 8c660fcd250d..0ae155be9c89 100644 --- a/drivers/video/backlight/generic_bl.c +++ b/drivers/video/backlight/generic_bl.c @@ -97,8 +97,8 @@ static int genericbl_probe(struct platform_device *pdev) props.max_brightness = machinfo->max_intensity; bd = backlight_device_register(name, &pdev->dev, NULL, &genericbl_ops, &props); - if (IS_ERR (bd)) - return PTR_ERR (bd); + if (IS_ERR(bd)) + return PTR_ERR(bd); platform_set_drvdata(pdev, bd); diff --git a/drivers/video/backlight/hp680_bl.c b/drivers/video/backlight/hp680_bl.c index c99966342448..5cefd73526f8 100644 --- a/drivers/video/backlight/hp680_bl.c +++ b/drivers/video/backlight/hp680_bl.c @@ -26,7 +26,7 @@ #define HP680_DEFAULT_INTENSITY 10 static int hp680bl_suspended; -static int current_intensity = 0; +static int current_intensity; static DEFINE_SPINLOCK(bl_lock); static void hp680bl_send_intensity(struct backlight_device *bd) @@ -168,7 +168,7 @@ static int __init hp680bl_init(void) static void __exit hp680bl_exit(void) { platform_device_unregister(hp680bl_device); - platform_driver_unregister(&hp680bl_driver); + platform_driver_unregister(&hp680bl_driver); } module_init(hp680bl_init); diff --git a/drivers/video/backlight/ili9320.c b/drivers/video/backlight/ili9320.c index 66cc313185ad..1235bf9defc4 100644 --- a/drivers/video/backlight/ili9320.c +++ b/drivers/video/backlight/ili9320.c @@ -45,7 +45,7 @@ static inline int ili9320_write_spi(struct ili9320 *ili, /* second message is the data to transfer */ data[0] = spi->id | ILI9320_SPI_DATA | ILI9320_SPI_WRITE; - data[1] = value >> 8; + data[1] = value >> 8; data[2] = value; return spi_sync(spi->dev, &spi->message); @@ -56,11 +56,10 @@ int ili9320_write(struct ili9320 *ili, unsigned int reg, unsigned int value) dev_dbg(ili->dev, "write: reg=%02x, val=%04x\n", reg, value); return ili->write(ili, reg, value); } - EXPORT_SYMBOL_GPL(ili9320_write); int ili9320_write_regs(struct ili9320 *ili, - struct ili9320_reg *values, + const struct ili9320_reg *values, int nr_values) { int index; @@ -74,7 +73,6 @@ int ili9320_write_regs(struct ili9320 *ili, return 0; } - EXPORT_SYMBOL_GPL(ili9320_write_regs); static void ili9320_reset(struct ili9320 *lcd) @@ -260,7 +258,6 @@ int ili9320_probe_spi(struct spi_device *spi, return ret; } - EXPORT_SYMBOL_GPL(ili9320_probe_spi); int ili9320_remove(struct ili9320 *ili) @@ -271,7 +268,6 @@ int ili9320_remove(struct ili9320 *ili) return 0; } - EXPORT_SYMBOL_GPL(ili9320_remove); #ifdef CONFIG_PM @@ -296,20 +292,17 @@ int ili9320_suspend(struct ili9320 *lcd, pm_message_t state) return 0; } - EXPORT_SYMBOL_GPL(ili9320_suspend); int ili9320_resume(struct ili9320 *lcd) { dev_info(lcd->dev, "resuming from power state %d\n", lcd->power); - if (lcd->platdata->suspend == ILI9320_SUSPEND_DEEP) { + if (lcd->platdata->suspend == ILI9320_SUSPEND_DEEP) ili9320_write(lcd, ILI9320_POWER1, 0x00); - } return ili9320_power(lcd, FB_BLANK_UNBLANK); } - EXPORT_SYMBOL_GPL(ili9320_resume); #endif @@ -318,7 +311,6 @@ void ili9320_shutdown(struct ili9320 *lcd) { ili9320_power(lcd, FB_BLANK_POWERDOWN); } - EXPORT_SYMBOL_GPL(ili9320_shutdown); MODULE_AUTHOR("Ben Dooks <ben-linux@fluff.org>"); diff --git a/drivers/video/backlight/ili9320.h b/drivers/video/backlight/ili9320.h index e388eca7cac5..e0db738f7bb9 100644 --- a/drivers/video/backlight/ili9320.h +++ b/drivers/video/backlight/ili9320.h @@ -63,7 +63,7 @@ extern int ili9320_write(struct ili9320 *ili, unsigned int reg, unsigned int value); extern int ili9320_write_regs(struct ili9320 *ili, - struct ili9320_reg *values, + const struct ili9320_reg *values, int nr_values); /* Device probe */ diff --git a/drivers/video/backlight/jornada720_bl.c b/drivers/video/backlight/jornada720_bl.c index 16f593b64427..fef6ce4fad71 100644 --- a/drivers/video/backlight/jornada720_bl.c +++ b/drivers/video/backlight/jornada720_bl.c @@ -48,7 +48,7 @@ static int jornada_bl_get_brightness(struct backlight_device *bd) jornada_ssp_end(); - return (BL_MAX_BRIGHT - ret); + return BL_MAX_BRIGHT - ret; } static int jornada_bl_update_status(struct backlight_device *bd) @@ -77,18 +77,23 @@ static int jornada_bl_update_status(struct backlight_device *bd) goto out; } - /* at this point we expect that the mcu has accepted - our command and is waiting for our new value - please note that maximum brightness is 255, - but due to physical layout it is equal to 0, so we simply - invert the value (MAX VALUE - NEW VALUE). */ - if (jornada_ssp_byte(BL_MAX_BRIGHT - bd->props.brightness) != TXDUMMY) { + /* + * at this point we expect that the mcu has accepted + * our command and is waiting for our new value + * please note that maximum brightness is 255, + * but due to physical layout it is equal to 0, so we simply + * invert the value (MAX VALUE - NEW VALUE). + */ + if (jornada_ssp_byte(BL_MAX_BRIGHT - bd->props.brightness) + != TXDUMMY) { pr_err("set brightness failed\n"); ret = -ETIMEDOUT; } - /* If infact we get an TXDUMMY as output we are happy and dont - make any further comments about it */ + /* + * If infact we get an TXDUMMY as output we are happy and dont + * make any further comments about it + */ out: jornada_ssp_end(); @@ -121,9 +126,11 @@ static int jornada_bl_probe(struct platform_device *pdev) bd->props.power = FB_BLANK_UNBLANK; bd->props.brightness = BL_DEF_BRIGHT; - /* note. make sure max brightness is set otherwise - you will get seemingly non-related errors when - trying to change brightness */ + /* + * note. make sure max brightness is set otherwise + * you will get seemingly non-related errors when + * trying to change brightness + */ jornada_bl_update_status(bd); platform_set_drvdata(pdev, bd); diff --git a/drivers/video/backlight/l4f00242t03.c b/drivers/video/backlight/l4f00242t03.c index f5aa0a5961d6..9a35196d12d7 100644 --- a/drivers/video/backlight/l4f00242t03.c +++ b/drivers/video/backlight/l4f00242t03.c @@ -4,7 +4,7 @@ * Copyright 2007-2009 Freescale Semiconductor, Inc. All Rights Reserved. * * Copyright (c) 2009 Alberto Panizzo <maramaopercheseimorto@gmail.com> - * Inspired by Marek Vasut work in l4f00242t03.c + * Inspired by Marek Vasut work in l4f00242t03.c * * 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 @@ -33,7 +33,6 @@ struct l4f00242t03_priv { struct regulator *core_reg; }; - static void l4f00242t03_reset(unsigned int gpio) { pr_debug("l4f00242t03_reset.\n"); diff --git a/drivers/video/backlight/lcd.c b/drivers/video/backlight/lcd.c index a5d0d024bb92..34fb6bd798c8 100644 --- a/drivers/video/backlight/lcd.c +++ b/drivers/video/backlight/lcd.c @@ -108,7 +108,7 @@ static ssize_t lcd_show_power(struct device *dev, struct device_attribute *attr, static ssize_t lcd_store_power(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - int rc = -ENXIO; + int rc; struct lcd_device *ld = to_lcd_device(dev); unsigned long power; @@ -116,6 +116,8 @@ static ssize_t lcd_store_power(struct device *dev, if (rc) return rc; + rc = -ENXIO; + mutex_lock(&ld->ops_lock); if (ld->ops && ld->ops->set_power) { pr_debug("set power to %lu\n", power); @@ -144,7 +146,7 @@ static ssize_t lcd_show_contrast(struct device *dev, static ssize_t lcd_store_contrast(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - int rc = -ENXIO; + int rc; struct lcd_device *ld = to_lcd_device(dev); unsigned long contrast; @@ -152,6 +154,8 @@ static ssize_t lcd_store_contrast(struct device *dev, if (rc) return rc; + rc = -ENXIO; + mutex_lock(&ld->ops_lock); if (ld->ops && ld->ops->set_contrast) { pr_debug("set contrast to %lu\n", contrast); diff --git a/drivers/video/backlight/lm3630_bl.c b/drivers/video/backlight/lm3630_bl.c index 0207bc0a4407..a6d637b5c68f 100644 --- a/drivers/video/backlight/lm3630_bl.c +++ b/drivers/video/backlight/lm3630_bl.c @@ -37,7 +37,7 @@ enum lm3630_leds { BLED_2 }; -static const char *bled_name[] = { +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 */ diff --git a/drivers/video/backlight/lm3639_bl.c b/drivers/video/backlight/lm3639_bl.c index b0e1e8ba4d9f..7ab2d2a04e41 100644 --- a/drivers/video/backlight/lm3639_bl.c +++ b/drivers/video/backlight/lm3639_bl.c @@ -214,7 +214,7 @@ out_input: } -static DEVICE_ATTR(bled_mode, 0666, NULL, lm3639_bled_mode_store); +static DEVICE_ATTR(bled_mode, S_IWUSR, NULL, lm3639_bled_mode_store); /* torch */ static void lm3639_torch_brightness_set(struct led_classdev *cdev, diff --git a/drivers/video/backlight/lms283gf05.c b/drivers/video/backlight/lms283gf05.c index b29c7071c9db..55819b384701 100644 --- a/drivers/video/backlight/lms283gf05.c +++ b/drivers/video/backlight/lms283gf05.c @@ -31,7 +31,7 @@ struct lms283gf05_seq { }; /* Magic sequences supplied by manufacturer, for details refer to datasheet */ -static struct lms283gf05_seq disp_initseq[] = { +static const struct lms283gf05_seq disp_initseq[] = { /* REG, VALUE, DELAY */ { 0x07, 0x0000, 0 }, { 0x13, 0x0000, 10 }, @@ -78,7 +78,7 @@ static struct lms283gf05_seq disp_initseq[] = { { 0x22, 0x0000, 0 } }; -static struct lms283gf05_seq disp_pdwnseq[] = { +static const struct lms283gf05_seq disp_pdwnseq[] = { { 0x07, 0x0016, 30 }, { 0x07, 0x0004, 0 }, @@ -104,7 +104,7 @@ static void lms283gf05_reset(unsigned long gpio, bool inverted) } static void lms283gf05_toggle(struct spi_device *spi, - struct lms283gf05_seq *seq, int sz) + const struct lms283gf05_seq *seq, int sz) { char buf[3]; int i; @@ -158,13 +158,10 @@ static int lms283gf05_probe(struct spi_device *spi) int ret = 0; if (pdata != NULL) { - ret = devm_gpio_request(&spi->dev, pdata->reset_gpio, - "LMS285GF05 RESET"); - if (ret) - return ret; - - ret = gpio_direction_output(pdata->reset_gpio, - !pdata->reset_inverted); + ret = devm_gpio_request_one(&spi->dev, pdata->reset_gpio, + GPIOF_DIR_OUT | (!pdata->reset_inverted ? + GPIOF_INIT_HIGH : GPIOF_INIT_LOW), + "LMS285GF05 RESET"); if (ret) return ret; } diff --git a/drivers/video/backlight/lp855x_bl.c b/drivers/video/backlight/lp855x_bl.c index fd985e0681e9..6e4db0c874c8 100644 --- a/drivers/video/backlight/lp855x_bl.c +++ b/drivers/video/backlight/lp855x_bl.c @@ -15,6 +15,7 @@ #include <linux/backlight.h> #include <linux/err.h> #include <linux/platform_data/lp855x.h> +#include <linux/pwm.h> /* Registers */ #define BRIGHTNESS_CTRL 0x00 @@ -34,22 +35,19 @@ struct lp855x { struct i2c_client *client; struct backlight_device *bl; struct device *dev; - struct mutex xfer_lock; struct lp855x_platform_data *pdata; + struct pwm_device *pwm; }; static int lp855x_read_byte(struct lp855x *lp, u8 reg, u8 *data) { int ret; - mutex_lock(&lp->xfer_lock); ret = i2c_smbus_read_byte_data(lp->client, reg); if (ret < 0) { - mutex_unlock(&lp->xfer_lock); dev_err(lp->dev, "failed to read 0x%.2x\n", reg); return ret; } - mutex_unlock(&lp->xfer_lock); *data = (u8)ret; return 0; @@ -57,13 +55,7 @@ static int lp855x_read_byte(struct lp855x *lp, u8 reg, u8 *data) static int lp855x_write_byte(struct lp855x *lp, u8 reg, u8 data) { - int ret; - - mutex_lock(&lp->xfer_lock); - ret = i2c_smbus_write_byte_data(lp->client, reg, data); - mutex_unlock(&lp->xfer_lock); - - return ret; + return i2c_smbus_write_byte_data(lp->client, reg, data); } static bool lp855x_is_valid_rom_area(struct lp855x *lp, u8 addr) @@ -121,6 +113,28 @@ static int lp855x_init_registers(struct lp855x *lp) return ret; } +static void lp855x_pwm_ctrl(struct lp855x *lp, int br, int max_br) +{ + unsigned int period = lp->pdata->period_ns; + unsigned int duty = br * period / max_br; + struct pwm_device *pwm; + + /* request pwm device with the consumer name */ + if (!lp->pwm) { + pwm = devm_pwm_get(lp->dev, lp->chipname); + if (IS_ERR(pwm)) + return; + + lp->pwm = pwm; + } + + pwm_config(lp->pwm, duty, period); + if (duty) + pwm_enable(lp->pwm); + else + pwm_disable(lp->pwm); +} + static int lp855x_bl_update_status(struct backlight_device *bl) { struct lp855x *lp = bl_get_data(bl); @@ -130,12 +144,10 @@ static int lp855x_bl_update_status(struct backlight_device *bl) bl->props.brightness = 0; if (mode == PWM_BASED) { - struct lp855x_pwm_data *pd = &lp->pdata->pwm_data; int br = bl->props.brightness; int max_br = bl->props.max_brightness; - if (pd->pwm_set_intensity) - pd->pwm_set_intensity(br, max_br); + lp855x_pwm_ctrl(lp, br, max_br); } else if (mode == REGISTER_BASED) { u8 val = bl->props.brightness; @@ -150,14 +162,7 @@ static int lp855x_bl_get_brightness(struct backlight_device *bl) struct lp855x *lp = bl_get_data(bl); enum lp855x_brightness_ctrl_mode mode = lp->pdata->mode; - if (mode == PWM_BASED) { - struct lp855x_pwm_data *pd = &lp->pdata->pwm_data; - int max_br = bl->props.max_brightness; - - if (pd->pwm_get_intensity) - bl->props.brightness = pd->pwm_get_intensity(max_br); - - } else if (mode == REGISTER_BASED) { + if (mode == REGISTER_BASED) { u8 val = 0; lp855x_read_byte(lp, BRIGHTNESS_CTRL, &val); @@ -266,8 +271,6 @@ static int lp855x_probe(struct i2c_client *cl, const struct i2c_device_id *id) lp->chip_id = id->driver_data; i2c_set_clientdata(cl, lp); - mutex_init(&lp->xfer_lock); - ret = lp855x_init_registers(lp); if (ret) { dev_err(lp->dev, "i2c communication err: %d", ret); diff --git a/drivers/video/backlight/max8925_bl.c b/drivers/video/backlight/max8925_bl.c index c6bec7aab87b..2c9bce050aa9 100644 --- a/drivers/video/backlight/max8925_bl.c +++ b/drivers/video/backlight/max8925_bl.c @@ -120,15 +120,13 @@ static int max8925_backlight_probe(struct platform_device *pdev) res = platform_get_resource(pdev, IORESOURCE_REG, 0); if (!res) { dev_err(&pdev->dev, "No REG resource for mode control!\n"); - ret = -ENXIO; - goto out; + return -ENXIO; } data->reg_mode_cntl = res->start; res = platform_get_resource(pdev, IORESOURCE_REG, 1); if (!res) { dev_err(&pdev->dev, "No REG resource for control!\n"); - ret = -ENXIO; - goto out; + return -ENXIO; } data->reg_cntl = res->start; @@ -142,8 +140,7 @@ static int max8925_backlight_probe(struct platform_device *pdev) &max8925_backlight_ops, &props); if (IS_ERR(bl)) { dev_err(&pdev->dev, "failed to register backlight\n"); - ret = PTR_ERR(bl); - goto out; + return PTR_ERR(bl); } bl->props.brightness = MAX_BRIGHTNESS; @@ -166,8 +163,6 @@ static int max8925_backlight_probe(struct platform_device *pdev) return 0; out_brt: backlight_device_unregister(bl); -out: - devm_kfree(&pdev->dev, data); return ret; } diff --git a/drivers/video/backlight/omap1_bl.c b/drivers/video/backlight/omap1_bl.c index 9a046a4c98f5..af31c269baa6 100644 --- a/drivers/video/backlight/omap1_bl.c +++ b/drivers/video/backlight/omap1_bl.c @@ -42,12 +42,12 @@ struct omap_backlight { struct omap_backlight_config *pdata; }; -static void inline omapbl_send_intensity(int intensity) +static inline void omapbl_send_intensity(int intensity) { omap_writeb(intensity, OMAP_PWL_ENABLE); } -static void inline omapbl_send_enable(int enable) +static inline void omapbl_send_enable(int enable) { omap_writeb(enable, OMAP_PWL_CLK_ENABLE); } diff --git a/drivers/video/backlight/pandora_bl.c b/drivers/video/backlight/pandora_bl.c index 4ec30748b447..633b0a22fd64 100644 --- a/drivers/video/backlight/pandora_bl.c +++ b/drivers/video/backlight/pandora_bl.c @@ -71,8 +71,7 @@ static int pandora_backlight_update_status(struct backlight_device *bl) * set PWM duty cycle to max. TPS61161 seems to use this * to calibrate it's PWM sensitivity when it starts. */ - twl_i2c_write_u8(TWL4030_MODULE_PWM0, MAX_VALUE, - TWL_PWM0_OFF); + twl_i2c_write_u8(TWL_MODULE_PWM, MAX_VALUE, TWL_PWM0_OFF); /* first enable clock, then PWM0 out */ twl_i2c_read_u8(TWL4030_MODULE_INTBR, &r, TWL_INTBR_GPBR1); @@ -90,8 +89,7 @@ static int pandora_backlight_update_status(struct backlight_device *bl) usleep_range(2000, 10000); } - twl_i2c_write_u8(TWL4030_MODULE_PWM0, MIN_VALUE + brightness, - TWL_PWM0_OFF); + twl_i2c_write_u8(TWL_MODULE_PWM, MIN_VALUE + brightness, TWL_PWM0_OFF); done: if (brightness != 0) @@ -132,7 +130,7 @@ static int pandora_backlight_probe(struct platform_device *pdev) platform_set_drvdata(pdev, bl); /* 64 cycle period, ON position 0 */ - twl_i2c_write_u8(TWL4030_MODULE_PWM0, 0x80, TWL_PWM0_ON); + twl_i2c_write_u8(TWL_MODULE_PWM, 0x80, TWL_PWM0_ON); bl->props.state |= PANDORABL_WAS_OFF; bl->props.brightness = MAX_USER_VALUE; diff --git a/drivers/video/backlight/pcf50633-backlight.c b/drivers/video/backlight/pcf50633-backlight.c index 0087396007e4..e87c7a3394f3 100644 --- a/drivers/video/backlight/pcf50633-backlight.c +++ b/drivers/video/backlight/pcf50633-backlight.c @@ -52,7 +52,7 @@ int pcf50633_bl_set_brightness_limit(struct pcf50633 *pcf, unsigned int limit) pcf_bl->brightness_limit = limit & 0x3f; backlight_update_status(pcf_bl->bl); - return 0; + return 0; } static int pcf50633_bl_update_status(struct backlight_device *bl) @@ -136,8 +136,10 @@ static int pcf50633_bl_probe(struct platform_device *pdev) pcf50633_reg_write(pcf_bl->pcf, PCF50633_REG_LEDDIM, pdata->ramp_time); - /* Should be different from bl_props.brightness, so we do not exit - * update_status early the first time it's called */ + /* + * Should be different from bl_props.brightness, so we do not exit + * update_status early the first time it's called + */ pcf_bl->brightness = pcf_bl->bl->props.brightness + 1; backlight_update_status(pcf_bl->bl); diff --git a/drivers/video/backlight/platform_lcd.c b/drivers/video/backlight/platform_lcd.c index 894bfc5ce422..17a6b83f97af 100644 --- a/drivers/video/backlight/platform_lcd.c +++ b/drivers/video/backlight/platform_lcd.c @@ -27,7 +27,7 @@ struct platform_lcd { struct plat_lcd_data *pdata; unsigned int power; - unsigned int suspended : 1; + unsigned int suspended:1; }; static inline struct platform_lcd *to_our_lcd(struct lcd_device *lcd) diff --git a/drivers/video/backlight/s6e63m0.c b/drivers/video/backlight/s6e63m0.c index 484e10dd1a8e..3e1c1135f6df 100644 --- a/drivers/video/backlight/s6e63m0.c +++ b/drivers/video/backlight/s6e63m0.c @@ -757,7 +757,7 @@ static int s6e63m0_probe(struct spi_device *spi) lcd->spi = spi; lcd->dev = &spi->dev; - lcd->lcd_pd = (struct lcd_platform_data *)spi->dev.platform_data; + lcd->lcd_pd = spi->dev.platform_data; if (!lcd->lcd_pd) { dev_err(&spi->dev, "platform data is NULL.\n"); return -EFAULT; diff --git a/drivers/video/backlight/tdo24m.c b/drivers/video/backlight/tdo24m.c index 146ffb9404d1..ad2325f3d652 100644 --- a/drivers/video/backlight/tdo24m.c +++ b/drivers/video/backlight/tdo24m.c @@ -2,7 +2,7 @@ * tdo24m - SPI-based drivers for Toppoly TDO24M series LCD panels * * Copyright (C) 2008 Marvell International Ltd. - * Eric Miao <eric.miao@marvell.com> + * Eric Miao <eric.miao@marvell.com> * * 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 @@ -47,7 +47,7 @@ struct tdo24m { ((x1) << 9) | 0x100 | (x2)) #define CMD_NULL (-1) -static uint32_t lcd_panel_reset[] = { +static const uint32_t lcd_panel_reset[] = { CMD0(0x1), /* reset */ CMD0(0x0), /* nop */ CMD0(0x0), /* nop */ @@ -55,7 +55,7 @@ static uint32_t lcd_panel_reset[] = { CMD_NULL, }; -static uint32_t lcd_panel_on[] = { +static const uint32_t lcd_panel_on[] = { CMD0(0x29), /* Display ON */ CMD2(0xB8, 0xFF, 0xF9), /* Output Control */ CMD0(0x11), /* Sleep out */ @@ -63,7 +63,7 @@ static uint32_t lcd_panel_on[] = { CMD_NULL, }; -static uint32_t lcd_panel_off[] = { +static const uint32_t lcd_panel_off[] = { CMD0(0x28), /* Display OFF */ CMD2(0xB8, 0x80, 0x02), /* Output Control */ CMD0(0x10), /* Sleep in */ @@ -71,7 +71,7 @@ static uint32_t lcd_panel_off[] = { CMD_NULL, }; -static uint32_t lcd_vga_pass_through_tdo24m[] = { +static const uint32_t lcd_vga_pass_through_tdo24m[] = { CMD1(0xB0, 0x16), CMD1(0xBC, 0x80), CMD1(0xE1, 0x00), @@ -80,7 +80,7 @@ static uint32_t lcd_vga_pass_through_tdo24m[] = { CMD_NULL, }; -static uint32_t lcd_qvga_pass_through_tdo24m[] = { +static const uint32_t lcd_qvga_pass_through_tdo24m[] = { CMD1(0xB0, 0x16), CMD1(0xBC, 0x81), CMD1(0xE1, 0x00), @@ -89,8 +89,8 @@ static uint32_t lcd_qvga_pass_through_tdo24m[] = { CMD_NULL, }; -static uint32_t lcd_vga_transfer_tdo24m[] = { - CMD1(0xcf, 0x02), /* Blanking period control (1) */ +static const uint32_t lcd_vga_transfer_tdo24m[] = { + CMD1(0xcf, 0x02), /* Blanking period control (1) */ CMD2(0xd0, 0x08, 0x04), /* Blanking period control (2) */ CMD1(0xd1, 0x01), /* CKV timing control on/off */ CMD2(0xd2, 0x14, 0x00), /* CKV 1,2 timing control */ @@ -102,7 +102,7 @@ static uint32_t lcd_vga_transfer_tdo24m[] = { CMD_NULL, }; -static uint32_t lcd_qvga_transfer[] = { +static const uint32_t lcd_qvga_transfer[] = { CMD1(0xd6, 0x02), /* Blanking period control (1) */ CMD2(0xd7, 0x08, 0x04), /* Blanking period control (2) */ CMD1(0xd8, 0x01), /* CKV timing control on/off */ @@ -115,7 +115,7 @@ static uint32_t lcd_qvga_transfer[] = { CMD_NULL, }; -static uint32_t lcd_vga_pass_through_tdo35s[] = { +static const uint32_t lcd_vga_pass_through_tdo35s[] = { CMD1(0xB0, 0x16), CMD1(0xBC, 0x80), CMD1(0xE1, 0x00), @@ -123,7 +123,7 @@ static uint32_t lcd_vga_pass_through_tdo35s[] = { CMD_NULL, }; -static uint32_t lcd_qvga_pass_through_tdo35s[] = { +static const uint32_t lcd_qvga_pass_through_tdo35s[] = { CMD1(0xB0, 0x16), CMD1(0xBC, 0x81), CMD1(0xE1, 0x00), @@ -131,8 +131,8 @@ static uint32_t lcd_qvga_pass_through_tdo35s[] = { CMD_NULL, }; -static uint32_t lcd_vga_transfer_tdo35s[] = { - CMD1(0xcf, 0x02), /* Blanking period control (1) */ +static const uint32_t lcd_vga_transfer_tdo35s[] = { + CMD1(0xcf, 0x02), /* Blanking period control (1) */ CMD2(0xd0, 0x08, 0x04), /* Blanking period control (2) */ CMD1(0xd1, 0x01), /* CKV timing control on/off */ CMD2(0xd2, 0x00, 0x1e), /* CKV 1,2 timing control */ @@ -144,7 +144,7 @@ static uint32_t lcd_vga_transfer_tdo35s[] = { CMD_NULL, }; -static uint32_t lcd_panel_config[] = { +static const uint32_t lcd_panel_config[] = { CMD2(0xb8, 0xff, 0xf9), /* Output control */ CMD0(0x11), /* sleep out */ CMD1(0xba, 0x01), /* Display mode (1) */ @@ -175,10 +175,11 @@ static uint32_t lcd_panel_config[] = { CMD_NULL, }; -static int tdo24m_writes(struct tdo24m *lcd, uint32_t *array) +static int tdo24m_writes(struct tdo24m *lcd, const uint32_t *array) { struct spi_transfer *x = &lcd->xfer; - uint32_t data, *p = array; + const uint32_t *p = array; + uint32_t data; int nparams, err = 0; for (; *p != CMD_NULL; p++) { diff --git a/drivers/video/backlight/tosa_bl.c b/drivers/video/backlight/tosa_bl.c index a0521abdcd8a..588682cc1614 100644 --- a/drivers/video/backlight/tosa_bl.c +++ b/drivers/video/backlight/tosa_bl.c @@ -92,14 +92,12 @@ static int tosa_bl_probe(struct i2c_client *client, data->comadj = sharpsl_param.comadj == -1 ? COMADJ_DEFAULT : sharpsl_param.comadj; - ret = devm_gpio_request(&client->dev, TOSA_GPIO_BL_C20MA, "backlight"); + ret = devm_gpio_request_one(&client->dev, TOSA_GPIO_BL_C20MA, + GPIOF_OUT_INIT_LOW, "backlight"); if (ret) { dev_dbg(&data->bl->dev, "Unable to request gpio!\n"); return ret; } - ret = gpio_direction_output(TOSA_GPIO_BL_C20MA, 0); - if (ret) - return ret; i2c_set_clientdata(client, data); data->i2c = client; @@ -163,7 +161,6 @@ static const struct i2c_device_id tosa_bl_id[] = { { }, }; - static struct i2c_driver tosa_bl_driver = { .driver = { .name = "tosa-bl", diff --git a/drivers/video/backlight/tosa_lcd.c b/drivers/video/backlight/tosa_lcd.c index 86fff88c2e4a..96bae941585a 100644 --- a/drivers/video/backlight/tosa_lcd.c +++ b/drivers/video/backlight/tosa_lcd.c @@ -63,7 +63,7 @@ static int tosa_tg_send(struct spi_device *spi, int adrs, uint8_t data) int tosa_bl_enable(struct spi_device *spi, int enable) { /* bl_enable GP04=1 otherwise GP04=0*/ - return tosa_tg_send(spi, TG_GPODR2, enable? 0x01 : 0x00); + return tosa_tg_send(spi, TG_GPODR2, enable ? 0x01 : 0x00); } EXPORT_SYMBOL(tosa_bl_enable); @@ -91,15 +91,17 @@ static void tosa_lcd_tg_on(struct tosa_lcd_data *data) tosa_tg_send(spi, TG_PNLCTL, value); /* TG LCD pannel power up */ - tosa_tg_send(spi, TG_PINICTL,0x4); + tosa_tg_send(spi, TG_PINICTL, 0x4); mdelay(50); /* TG LCD GVSS */ - tosa_tg_send(spi, TG_PINICTL,0x0); + tosa_tg_send(spi, TG_PINICTL, 0x0); if (!data->i2c) { - /* after the pannel is powered up the first time, we can access the i2c bus */ - /* so probe for the DAC */ + /* + * after the pannel is powered up the first time, + * we can access the i2c bus so probe for the DAC + */ struct i2c_adapter *adap = i2c_get_adapter(0); struct i2c_board_info info = { .type = "tosa-bl", @@ -115,11 +117,11 @@ static void tosa_lcd_tg_off(struct tosa_lcd_data *data) struct spi_device *spi = data->spi; /* TG LCD VHSA off */ - tosa_tg_send(spi, TG_PINICTL,0x4); + tosa_tg_send(spi, TG_PINICTL, 0x4); mdelay(50); /* TG LCD signal off */ - tosa_tg_send(spi, TG_PINICTL,0x6); + tosa_tg_send(spi, TG_PINICTL, 0x6); mdelay(50); /* TG Off */ @@ -193,17 +195,13 @@ static int tosa_lcd_probe(struct spi_device *spi) data->spi = spi; dev_set_drvdata(&spi->dev, data); - ret = devm_gpio_request(&spi->dev, TOSA_GPIO_TG_ON, "tg #pwr"); + ret = devm_gpio_request_one(&spi->dev, TOSA_GPIO_TG_ON, + GPIOF_OUT_INIT_LOW, "tg #pwr"); if (ret < 0) goto err_gpio_tg; mdelay(60); - ret = gpio_direction_output(TOSA_GPIO_TG_ON, 0); - if (ret < 0) - goto err_gpio_tg; - - mdelay(60); tosa_lcd_tg_init(data); tosa_lcd_tg_on(data); diff --git a/drivers/video/backlight/vgg2432a4.c b/drivers/video/backlight/vgg2432a4.c index 712b0acfd339..45e81b4cf8b4 100644 --- a/drivers/video/backlight/vgg2432a4.c +++ b/drivers/video/backlight/vgg2432a4.c @@ -26,7 +26,7 @@ /* Device initialisation sequences */ -static struct ili9320_reg vgg_init1[] = { +static const struct ili9320_reg vgg_init1[] = { { .address = ILI9320_POWER1, .value = ILI9320_POWER1_AP(0) | ILI9320_POWER1_BT(0), @@ -43,7 +43,7 @@ static struct ili9320_reg vgg_init1[] = { }, }; -static struct ili9320_reg vgg_init2[] = { +static const struct ili9320_reg vgg_init2[] = { { .address = ILI9320_POWER1, .value = (ILI9320_POWER1_AP(3) | ILI9320_POWER1_APE | @@ -54,7 +54,7 @@ static struct ili9320_reg vgg_init2[] = { } }; -static struct ili9320_reg vgg_gamma[] = { +static const struct ili9320_reg vgg_gamma[] = { { .address = ILI9320_GAMMA1, .value = 0x0000, @@ -89,7 +89,7 @@ static struct ili9320_reg vgg_gamma[] = { }; -static struct ili9320_reg vgg_init0[] = { +static const struct ili9320_reg vgg_init0[] = { [0] = { /* set direction and scan mode gate */ .address = ILI9320_DRIVER, @@ -217,7 +217,7 @@ static int vgg2432a4_resume(struct spi_device *spi) } #else #define vgg2432a4_suspend NULL -#define vgg2432a4_resume NULL +#define vgg2432a4_resume NULL #endif static struct ili9320_client vgg2432a4_client = { |