diff options
Diffstat (limited to 'drivers/video/backlight')
23 files changed, 1915 insertions, 357 deletions
diff --git a/drivers/video/backlight/88pm860x_bl.c b/drivers/video/backlight/88pm860x_bl.c index c072ed9aea36..2cd63507ed74 100644 --- a/drivers/video/backlight/88pm860x_bl.c +++ b/drivers/video/backlight/88pm860x_bl.c @@ -165,8 +165,10 @@ static int pm860x_backlight_dt_init(struct platform_device *pdev, struct pm860x_backlight_data *data, char *name) { - struct device_node *nproot = pdev->dev.parent->of_node, *np; + struct device_node *nproot, *np; int iset = 0; + + nproot = of_node_get(pdev->dev.parent->of_node); if (!nproot) return -ENODEV; nproot = of_find_node_by_name(nproot, "backlights"); @@ -184,6 +186,7 @@ static int pm860x_backlight_dt_init(struct platform_device *pdev, break; } } + of_node_put(nproot); return 0; } #else diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig index 765a945f8ea1..e2fc9f50bbea 100644 --- a/drivers/video/backlight/Kconfig +++ b/drivers/video/backlight/Kconfig @@ -126,6 +126,21 @@ config LCD_AMS369FG06 If you have an AMS369FG06 AMOLED Panel, say Y to enable its LCD control driver. +config LCD_LMS501KF03 + tristate "LMS501KF03 LCD Driver" + depends on SPI + default n + help + If you have an LMS501KF03 LCD Panel, say Y to enable its + LCD control driver. + +config LCD_HX8357 + tristate "Himax HX-8357 LCD Driver" + depends on SPI + help + If you have a HX-8357 LCD panel, say Y to enable its LCD control + driver. + endif # LCD_CLASS_DEVICE # @@ -369,6 +384,12 @@ config BACKLIGHT_LP855X This supports TI LP8550, LP8551, LP8552, LP8553 and LP8556 backlight driver. +config BACKLIGHT_LP8788 + tristate "Backlight driver for TI LP8788 MFD" + depends on BACKLIGHT_CLASS_DEVICE && MFD_LP8788 + help + This supports TI LP8788 backlight driver. + config BACKLIGHT_OT200 tristate "Backlight driver for ot200 visualisation device" depends on BACKLIGHT_CLASS_DEVICE && CS5535_MFGPT && GPIO_CS5535 @@ -390,6 +411,13 @@ config BACKLIGHT_TPS65217 If you have a Texas Instruments TPS65217 say Y to enable the backlight driver. +config BACKLIGHT_AS3711 + tristate "AS3711 Backlight" + depends on BACKLIGHT_CLASS_DEVICE && MFD_AS3711 + help + If you have an Austrian Microsystems AS3711 say Y to enable the + backlight driver. + endif # BACKLIGHT_CLASS_DEVICE endif # BACKLIGHT_LCD_SUPPORT diff --git a/drivers/video/backlight/Makefile b/drivers/video/backlight/Makefile index e7ce7291635d..96c4d620c5ce 100644 --- a/drivers/video/backlight/Makefile +++ b/drivers/video/backlight/Makefile @@ -1,47 +1,51 @@ # Backlight & LCD drivers -obj-$(CONFIG_LCD_CLASS_DEVICE) += lcd.o -obj-$(CONFIG_LCD_CORGI) += corgi_lcd.o -obj-$(CONFIG_LCD_HP700) += jornada720_lcd.o -obj-$(CONFIG_LCD_L4F00242T03) += l4f00242t03.o -obj-$(CONFIG_LCD_LMS283GF05) += lms283gf05.o -obj-$(CONFIG_LCD_LTV350QV) += ltv350qv.o -obj-$(CONFIG_LCD_ILI9320) += ili9320.o -obj-$(CONFIG_LCD_PLATFORM) += platform_lcd.o -obj-$(CONFIG_LCD_VGG2432A4) += vgg2432a4.o -obj-$(CONFIG_LCD_TDO24M) += tdo24m.o -obj-$(CONFIG_LCD_TOSA) += tosa_lcd.o -obj-$(CONFIG_LCD_S6E63M0) += s6e63m0.o -obj-$(CONFIG_LCD_LD9040) += ld9040.o -obj-$(CONFIG_LCD_AMS369FG06) += ams369fg06.o +obj-$(CONFIG_LCD_AMS369FG06) += ams369fg06.o +obj-$(CONFIG_LCD_CLASS_DEVICE) += lcd.o +obj-$(CONFIG_LCD_CORGI) += corgi_lcd.o +obj-$(CONFIG_LCD_HP700) += jornada720_lcd.o +obj-$(CONFIG_LCD_HX8357) += hx8357.o +obj-$(CONFIG_LCD_ILI9320) += ili9320.o +obj-$(CONFIG_LCD_L4F00242T03) += l4f00242t03.o +obj-$(CONFIG_LCD_LD9040) += ld9040.o +obj-$(CONFIG_LCD_LMS283GF05) += lms283gf05.o +obj-$(CONFIG_LCD_LMS501KF03) += lms501kf03.o +obj-$(CONFIG_LCD_LTV350QV) += ltv350qv.o +obj-$(CONFIG_LCD_PLATFORM) += platform_lcd.o +obj-$(CONFIG_LCD_S6E63M0) += s6e63m0.o +obj-$(CONFIG_LCD_TDO24M) += tdo24m.o +obj-$(CONFIG_LCD_TOSA) += tosa_lcd.o +obj-$(CONFIG_LCD_VGG2432A4) += vgg2432a4.o -obj-$(CONFIG_BACKLIGHT_CLASS_DEVICE) += backlight.o -obj-$(CONFIG_BACKLIGHT_ATMEL_PWM) += atmel-pwm-bl.o -obj-$(CONFIG_BACKLIGHT_EP93XX) += ep93xx_bl.o -obj-$(CONFIG_BACKLIGHT_GENERIC) += generic_bl.o -obj-$(CONFIG_BACKLIGHT_HP700) += jornada720_bl.o -obj-$(CONFIG_BACKLIGHT_HP680) += hp680_bl.o -obj-$(CONFIG_BACKLIGHT_LM3533) += lm3533_bl.o -obj-$(CONFIG_BACKLIGHT_LOCOMO) += locomolcd.o -obj-$(CONFIG_BACKLIGHT_LM3630) += lm3630_bl.o -obj-$(CONFIG_BACKLIGHT_LM3639) += lm3639_bl.o -obj-$(CONFIG_BACKLIGHT_LP855X) += lp855x_bl.o -obj-$(CONFIG_BACKLIGHT_OMAP1) += omap1_bl.o -obj-$(CONFIG_BACKLIGHT_PANDORA) += pandora_bl.o -obj-$(CONFIG_BACKLIGHT_CARILLO_RANCH) += cr_bllcd.o -obj-$(CONFIG_BACKLIGHT_PWM) += pwm_bl.o -obj-$(CONFIG_BACKLIGHT_DA903X) += da903x_bl.o -obj-$(CONFIG_BACKLIGHT_DA9052) += da9052_bl.o -obj-$(CONFIG_BACKLIGHT_MAX8925) += max8925_bl.o -obj-$(CONFIG_BACKLIGHT_APPLE) += apple_bl.o -obj-$(CONFIG_BACKLIGHT_TOSA) += tosa_bl.o -obj-$(CONFIG_BACKLIGHT_SAHARA) += kb3886_bl.o -obj-$(CONFIG_BACKLIGHT_WM831X) += wm831x_bl.o -obj-$(CONFIG_BACKLIGHT_ADP5520) += adp5520_bl.o -obj-$(CONFIG_BACKLIGHT_ADP8860) += adp8860_bl.o -obj-$(CONFIG_BACKLIGHT_ADP8870) += adp8870_bl.o -obj-$(CONFIG_BACKLIGHT_88PM860X) += 88pm860x_bl.o +obj-$(CONFIG_BACKLIGHT_88PM860X) += 88pm860x_bl.o +obj-$(CONFIG_BACKLIGHT_AAT2870) += aat2870_bl.o +obj-$(CONFIG_BACKLIGHT_ADP5520) += adp5520_bl.o +obj-$(CONFIG_BACKLIGHT_ADP8860) += adp8860_bl.o +obj-$(CONFIG_BACKLIGHT_ADP8870) += adp8870_bl.o +obj-$(CONFIG_BACKLIGHT_APPLE) += apple_bl.o +obj-$(CONFIG_BACKLIGHT_AS3711) += as3711_bl.o +obj-$(CONFIG_BACKLIGHT_ATMEL_PWM) += atmel-pwm-bl.o +obj-$(CONFIG_BACKLIGHT_CARILLO_RANCH) += cr_bllcd.o +obj-$(CONFIG_BACKLIGHT_CLASS_DEVICE) += backlight.o +obj-$(CONFIG_BACKLIGHT_DA903X) += da903x_bl.o +obj-$(CONFIG_BACKLIGHT_DA9052) += da9052_bl.o +obj-$(CONFIG_BACKLIGHT_EP93XX) += ep93xx_bl.o +obj-$(CONFIG_BACKLIGHT_GENERIC) += generic_bl.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-$(CONFIG_BACKLIGHT_LM3639) += lm3639_bl.o +obj-$(CONFIG_BACKLIGHT_LOCOMO) += locomolcd.o +obj-$(CONFIG_BACKLIGHT_LP855X) += lp855x_bl.o +obj-$(CONFIG_BACKLIGHT_LP8788) += lp8788_bl.o +obj-$(CONFIG_BACKLIGHT_MAX8925) += max8925_bl.o +obj-$(CONFIG_BACKLIGHT_OMAP1) += omap1_bl.o +obj-$(CONFIG_BACKLIGHT_OT200) += ot200_bl.o +obj-$(CONFIG_BACKLIGHT_PANDORA) += pandora_bl.o obj-$(CONFIG_BACKLIGHT_PCF50633) += pcf50633-backlight.o -obj-$(CONFIG_BACKLIGHT_AAT2870) += aat2870_bl.o -obj-$(CONFIG_BACKLIGHT_OT200) += ot200_bl.o -obj-$(CONFIG_BACKLIGHT_TPS65217) += tps65217_bl.o +obj-$(CONFIG_BACKLIGHT_PWM) += pwm_bl.o +obj-$(CONFIG_BACKLIGHT_SAHARA) += kb3886_bl.o +obj-$(CONFIG_BACKLIGHT_TOSA) += tosa_bl.o +obj-$(CONFIG_BACKLIGHT_TPS65217) += tps65217_bl.o +obj-$(CONFIG_BACKLIGHT_WM831X) += wm831x_bl.o diff --git a/drivers/video/backlight/aat2870_bl.c b/drivers/video/backlight/aat2870_bl.c index 7ff752288b92..c6fc668d6236 100644 --- a/drivers/video/backlight/aat2870_bl.c +++ b/drivers/video/backlight/aat2870_bl.c @@ -74,7 +74,7 @@ static int aat2870_bl_get_brightness(struct backlight_device *bd) static int aat2870_bl_update_status(struct backlight_device *bd) { - struct aat2870_bl_driver_data *aat2870_bl = dev_get_drvdata(&bd->dev); + struct aat2870_bl_driver_data *aat2870_bl = bl_get_data(bd); struct aat2870_data *aat2870 = dev_get_drvdata(aat2870_bl->pdev->dev.parent); int brightness = bd->props.brightness; diff --git a/drivers/video/backlight/ams369fg06.c b/drivers/video/backlight/ams369fg06.c index f57e1905236a..d29e49443f29 100644 --- a/drivers/video/backlight/ams369fg06.c +++ b/drivers/video/backlight/ams369fg06.c @@ -10,25 +10,16 @@ * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -#include <linux/wait.h> -#include <linux/module.h> -#include <linux/fb.h> +#include <linux/backlight.h> #include <linux/delay.h> +#include <linux/fb.h> #include <linux/gpio.h> -#include <linux/spi/spi.h> #include <linux/lcd.h> -#include <linux/backlight.h> +#include <linux/module.h> +#include <linux/spi/spi.h> +#include <linux/wait.h> #define SLEEPMSEC 0x1000 #define ENDDEF 0x2000 @@ -210,8 +201,9 @@ static int ams369fg06_panel_send_sequence(struct ams369fg06 *lcd, ret = ams369fg06_spi_write(lcd, wbuf[i], wbuf[i+1]); if (ret) break; - } else - mdelay(wbuf[i+1]); + } else { + msleep(wbuf[i+1]); + } i += 2; } @@ -313,41 +305,32 @@ static int ams369fg06_ldi_disable(struct ams369fg06 *lcd) static int ams369fg06_power_is_on(int power) { - return ((power) <= FB_BLANK_NORMAL); + return power <= FB_BLANK_NORMAL; } static int ams369fg06_power_on(struct ams369fg06 *lcd) { int ret = 0; - struct lcd_platform_data *pd = NULL; - struct backlight_device *bd = NULL; + struct lcd_platform_data *pd; + struct backlight_device *bd; pd = lcd->lcd_pd; - if (!pd) { - dev_err(lcd->dev, "platform data is NULL.\n"); - return -EFAULT; - } - bd = lcd->bd; - if (!bd) { - dev_err(lcd->dev, "backlight device is NULL.\n"); - return -EFAULT; - } if (!pd->power_on) { dev_err(lcd->dev, "power_on is NULL.\n"); - return -EFAULT; + return -EINVAL; } else { pd->power_on(lcd->ld, 1); - mdelay(pd->power_on_delay); + msleep(pd->power_on_delay); } if (!pd->reset) { dev_err(lcd->dev, "reset is NULL.\n"); - return -EFAULT; + return -EINVAL; } else { pd->reset(lcd->ld); - mdelay(pd->reset_delay); + msleep(pd->reset_delay); } ret = ams369fg06_ldi_init(lcd); @@ -374,14 +357,10 @@ static int ams369fg06_power_on(struct ams369fg06 *lcd) static int ams369fg06_power_off(struct ams369fg06 *lcd) { - int ret = 0; - struct lcd_platform_data *pd = NULL; + int ret; + struct lcd_platform_data *pd; pd = lcd->lcd_pd; - if (!pd) { - dev_err(lcd->dev, "platform data is NULL\n"); - return -EFAULT; - } ret = ams369fg06_ldi_disable(lcd); if (ret) { @@ -389,13 +368,9 @@ static int ams369fg06_power_off(struct ams369fg06 *lcd) return -EIO; } - mdelay(pd->power_off_delay); + msleep(pd->power_off_delay); - if (!pd->power_on) { - dev_err(lcd->dev, "power_on is NULL.\n"); - return -EFAULT; - } else - pd->power_on(lcd->ld, 0); + pd->power_on(lcd->ld, 0); return 0; } @@ -446,7 +421,7 @@ static int ams369fg06_set_brightness(struct backlight_device *bd) { int ret = 0; int brightness = bd->props.brightness; - struct ams369fg06 *lcd = dev_get_drvdata(&bd->dev); + struct ams369fg06 *lcd = bl_get_data(bd); if (brightness < MIN_BRIGHTNESS || brightness > bd->props.max_brightness) { @@ -501,7 +476,7 @@ static int ams369fg06_probe(struct spi_device *spi) lcd->lcd_pd = spi->dev.platform_data; if (!lcd->lcd_pd) { dev_err(&spi->dev, "platform data is NULL\n"); - return -EFAULT; + return -EINVAL; } ld = lcd_device_register("ams369fg06", &spi->dev, lcd, @@ -534,10 +509,11 @@ static int ams369fg06_probe(struct spi_device *spi) lcd->power = FB_BLANK_POWERDOWN; ams369fg06_power(lcd, FB_BLANK_UNBLANK); - } else + } else { lcd->power = FB_BLANK_UNBLANK; + } - dev_set_drvdata(&spi->dev, lcd); + spi_set_drvdata(spi, lcd); dev_info(&spi->dev, "ams369fg06 panel driver has been probed.\n"); @@ -550,7 +526,7 @@ out_lcd_unregister: static int ams369fg06_remove(struct spi_device *spi) { - struct ams369fg06 *lcd = dev_get_drvdata(&spi->dev); + struct ams369fg06 *lcd = spi_get_drvdata(spi); ams369fg06_power(lcd, FB_BLANK_POWERDOWN); backlight_device_unregister(lcd->bd); @@ -560,44 +536,26 @@ static int ams369fg06_remove(struct spi_device *spi) } #if defined(CONFIG_PM) -static unsigned int before_power; - static int ams369fg06_suspend(struct spi_device *spi, pm_message_t mesg) { - int ret = 0; - struct ams369fg06 *lcd = dev_get_drvdata(&spi->dev); + struct ams369fg06 *lcd = spi_get_drvdata(spi); dev_dbg(&spi->dev, "lcd->power = %d\n", lcd->power); - before_power = lcd->power; - /* * when lcd panel is suspend, lcd panel becomes off * regardless of status. */ - ret = ams369fg06_power(lcd, FB_BLANK_POWERDOWN); - - return ret; + return ams369fg06_power(lcd, FB_BLANK_POWERDOWN); } static int ams369fg06_resume(struct spi_device *spi) { - int ret = 0; - struct ams369fg06 *lcd = dev_get_drvdata(&spi->dev); + struct ams369fg06 *lcd = spi_get_drvdata(spi); - /* - * after suspended, if lcd panel status is FB_BLANK_UNBLANK - * (at that time, before_power is FB_BLANK_UNBLANK) then - * it changes that status to FB_BLANK_POWERDOWN to get lcd on. - */ - if (before_power == FB_BLANK_UNBLANK) - lcd->power = FB_BLANK_POWERDOWN; - - dev_dbg(&spi->dev, "before_power = %d\n", before_power); + lcd->power = FB_BLANK_POWERDOWN; - ret = ams369fg06_power(lcd, before_power); - - return ret; + return ams369fg06_power(lcd, FB_BLANK_UNBLANK); } #else #define ams369fg06_suspend NULL @@ -606,7 +564,7 @@ static int ams369fg06_resume(struct spi_device *spi) static void ams369fg06_shutdown(struct spi_device *spi) { - struct ams369fg06 *lcd = dev_get_drvdata(&spi->dev); + struct ams369fg06 *lcd = spi_get_drvdata(spi); ams369fg06_power(lcd, FB_BLANK_POWERDOWN); } diff --git a/drivers/video/backlight/as3711_bl.c b/drivers/video/backlight/as3711_bl.c new file mode 100644 index 000000000000..41d52fe52543 --- /dev/null +++ b/drivers/video/backlight/as3711_bl.c @@ -0,0 +1,380 @@ +/* + * AS3711 PMIC backlight driver, using DCDC Step Up Converters + * + * Copyright (C) 2012 Renesas Electronics Corporation + * Author: Guennadi Liakhovetski, <g.liakhovetski@gmx.de> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the version 2 of the GNU General Public License as + * published by the Free Software Foundation + */ + +#include <linux/backlight.h> +#include <linux/delay.h> +#include <linux/device.h> +#include <linux/err.h> +#include <linux/fb.h> +#include <linux/kernel.h> +#include <linux/mfd/as3711.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> +#include <linux/slab.h> + +enum as3711_bl_type { + AS3711_BL_SU1, + AS3711_BL_SU2, +}; + +struct as3711_bl_data { + bool powered; + const char *fb_name; + struct device *fb_dev; + enum as3711_bl_type type; + int brightness; + struct backlight_device *bl; +}; + +struct as3711_bl_supply { + struct as3711_bl_data su1; + struct as3711_bl_data su2; + const struct as3711_bl_pdata *pdata; + struct as3711 *as3711; +}; + +static struct as3711_bl_supply *to_supply(struct as3711_bl_data *su) +{ + switch (su->type) { + case AS3711_BL_SU1: + return container_of(su, struct as3711_bl_supply, su1); + case AS3711_BL_SU2: + return container_of(su, struct as3711_bl_supply, su2); + } + return NULL; +} + +static int as3711_set_brightness_auto_i(struct as3711_bl_data *data, + unsigned int brightness) +{ + struct as3711_bl_supply *supply = to_supply(data); + struct as3711 *as3711 = supply->as3711; + const struct as3711_bl_pdata *pdata = supply->pdata; + int ret = 0; + + /* Only all equal current values are supported */ + if (pdata->su2_auto_curr1) + ret = regmap_write(as3711->regmap, AS3711_CURR1_VALUE, + brightness); + if (!ret && pdata->su2_auto_curr2) + ret = regmap_write(as3711->regmap, AS3711_CURR2_VALUE, + brightness); + if (!ret && pdata->su2_auto_curr3) + ret = regmap_write(as3711->regmap, AS3711_CURR3_VALUE, + brightness); + + return ret; +} + +static int as3711_set_brightness_v(struct as3711 *as3711, + unsigned int brightness, + unsigned int reg) +{ + if (brightness > 31) + return -EINVAL; + + return regmap_update_bits(as3711->regmap, reg, 0xf0, + brightness << 4); +} + +static int as3711_bl_su2_reset(struct as3711_bl_supply *supply) +{ + struct as3711 *as3711 = supply->as3711; + int ret = regmap_update_bits(as3711->regmap, AS3711_STEPUP_CONTROL_5, + 3, supply->pdata->su2_fbprot); + if (!ret) + ret = regmap_update_bits(as3711->regmap, + AS3711_STEPUP_CONTROL_2, 1, 0); + if (!ret) + ret = regmap_update_bits(as3711->regmap, + AS3711_STEPUP_CONTROL_2, 1, 1); + return ret; +} + +/* + * Someone with less fragile or less expensive hardware could try to simplify + * the brightness adjustment procedure. + */ +static int as3711_bl_update_status(struct backlight_device *bl) +{ + struct as3711_bl_data *data = bl_get_data(bl); + struct as3711_bl_supply *supply = to_supply(data); + struct as3711 *as3711 = supply->as3711; + int brightness = bl->props.brightness; + int ret = 0; + + dev_dbg(&bl->dev, "%s(): brightness %u, pwr %x, blank %x, state %x\n", + __func__, bl->props.brightness, bl->props.power, + bl->props.fb_blank, bl->props.state); + + if (bl->props.power != FB_BLANK_UNBLANK || + bl->props.fb_blank != FB_BLANK_UNBLANK || + bl->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK)) + brightness = 0; + + if (data->type == AS3711_BL_SU1) { + ret = as3711_set_brightness_v(as3711, brightness, + AS3711_STEPUP_CONTROL_1); + } else { + const struct as3711_bl_pdata *pdata = supply->pdata; + + switch (pdata->su2_feedback) { + case AS3711_SU2_VOLTAGE: + ret = as3711_set_brightness_v(as3711, brightness, + AS3711_STEPUP_CONTROL_2); + break; + case AS3711_SU2_CURR_AUTO: + ret = as3711_set_brightness_auto_i(data, brightness / 4); + if (ret < 0) + return ret; + if (brightness) { + ret = as3711_bl_su2_reset(supply); + if (ret < 0) + return ret; + udelay(500); + ret = as3711_set_brightness_auto_i(data, brightness); + } else { + ret = regmap_update_bits(as3711->regmap, + AS3711_STEPUP_CONTROL_2, 1, 0); + } + break; + /* Manual one current feedback pin below */ + case AS3711_SU2_CURR1: + ret = regmap_write(as3711->regmap, AS3711_CURR1_VALUE, + brightness); + break; + case AS3711_SU2_CURR2: + ret = regmap_write(as3711->regmap, AS3711_CURR2_VALUE, + brightness); + break; + case AS3711_SU2_CURR3: + ret = regmap_write(as3711->regmap, AS3711_CURR3_VALUE, + brightness); + break; + default: + ret = -EINVAL; + } + } + if (!ret) + data->brightness = brightness; + + return ret; +} + +static int as3711_bl_get_brightness(struct backlight_device *bl) +{ + struct as3711_bl_data *data = bl_get_data(bl); + + return data->brightness; +} + +static const struct backlight_ops as3711_bl_ops = { + .update_status = as3711_bl_update_status, + .get_brightness = as3711_bl_get_brightness, +}; + +static int as3711_bl_init_su2(struct as3711_bl_supply *supply) +{ + struct as3711 *as3711 = supply->as3711; + const struct as3711_bl_pdata *pdata = supply->pdata; + u8 ctl = 0; + int ret; + + dev_dbg(as3711->dev, "%s(): use %u\n", __func__, pdata->su2_feedback); + + /* Turn SU2 off */ + ret = regmap_write(as3711->regmap, AS3711_STEPUP_CONTROL_2, 0); + if (ret < 0) + return ret; + + switch (pdata->su2_feedback) { + case AS3711_SU2_VOLTAGE: + ret = regmap_update_bits(as3711->regmap, AS3711_STEPUP_CONTROL_4, 3, 0); + break; + case AS3711_SU2_CURR1: + ctl = 1; + ret = regmap_update_bits(as3711->regmap, AS3711_STEPUP_CONTROL_4, 3, 1); + break; + case AS3711_SU2_CURR2: + ctl = 4; + ret = regmap_update_bits(as3711->regmap, AS3711_STEPUP_CONTROL_4, 3, 2); + break; + case AS3711_SU2_CURR3: + ctl = 0x10; + ret = regmap_update_bits(as3711->regmap, AS3711_STEPUP_CONTROL_4, 3, 3); + break; + case AS3711_SU2_CURR_AUTO: + if (pdata->su2_auto_curr1) + ctl = 2; + if (pdata->su2_auto_curr2) + ctl |= 8; + if (pdata->su2_auto_curr3) + ctl |= 0x20; + ret = 0; + break; + default: + return -EINVAL; + } + + if (!ret) + ret = regmap_write(as3711->regmap, AS3711_CURR_CONTROL, ctl); + + return ret; +} + +static int as3711_bl_register(struct platform_device *pdev, + unsigned int max_brightness, struct as3711_bl_data *su) +{ + struct backlight_properties props = {.type = BACKLIGHT_RAW,}; + struct backlight_device *bl; + + /* 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 ? + "as3711-su1" : "as3711-su2", + &pdev->dev, su, + &as3711_bl_ops, &props); + if (IS_ERR(bl)) { + dev_err(&pdev->dev, "failed to register backlight\n"); + return PTR_ERR(bl); + } + + bl->props.brightness = props.max_brightness; + + backlight_update_status(bl); + + su->bl = bl; + + return 0; +} + +static int as3711_backlight_probe(struct platform_device *pdev) +{ + struct as3711_bl_pdata *pdata = dev_get_platdata(&pdev->dev); + struct as3711 *as3711 = dev_get_drvdata(pdev->dev.parent); + struct as3711_bl_supply *supply; + struct as3711_bl_data *su; + unsigned int max_brightness; + int ret; + + if (!pdata || (!pdata->su1_fb && !pdata->su2_fb)) { + dev_err(&pdev->dev, "No platform data, exiting...\n"); + return -ENODEV; + } + + /* + * Due to possible hardware damage I chose to block all modes, + * unsupported on my hardware. Anyone, wishing to use any of those modes + * will have to first review the code, then activate and test it. + */ + if (pdata->su1_fb || + pdata->su2_fbprot != AS3711_SU2_GPIO4 || + pdata->su2_feedback != AS3711_SU2_CURR_AUTO) { + dev_warn(&pdev->dev, + "Attention! An untested mode has been chosen!\n" + "Please, review the code, enable, test, and report success:-)\n"); + return -EINVAL; + } + + supply = devm_kzalloc(&pdev->dev, sizeof(*supply), GFP_KERNEL); + if (!supply) + return -ENOMEM; + + supply->as3711 = as3711; + supply->pdata = pdata; + + if (pdata->su1_fb) { + su = &supply->su1; + su->fb_name = pdata->su1_fb; + su->type = AS3711_BL_SU1; + + max_brightness = min(pdata->su1_max_uA, 31); + ret = as3711_bl_register(pdev, max_brightness, su); + if (ret < 0) + return ret; + } + + if (pdata->su2_fb) { + su = &supply->su2; + su->fb_name = pdata->su2_fb; + su->type = AS3711_BL_SU2; + + switch (pdata->su2_fbprot) { + case AS3711_SU2_GPIO2: + case AS3711_SU2_GPIO3: + case AS3711_SU2_GPIO4: + case AS3711_SU2_LX_SD4: + break; + default: + ret = -EINVAL; + goto esu2; + } + + switch (pdata->su2_feedback) { + case AS3711_SU2_VOLTAGE: + max_brightness = min(pdata->su2_max_uA, 31); + break; + case AS3711_SU2_CURR1: + case AS3711_SU2_CURR2: + case AS3711_SU2_CURR3: + case AS3711_SU2_CURR_AUTO: + max_brightness = min(pdata->su2_max_uA / 150, 255); + break; + default: + ret = -EINVAL; + goto esu2; + } + + ret = as3711_bl_init_su2(supply); + if (ret < 0) + return ret; + + ret = as3711_bl_register(pdev, max_brightness, su); + if (ret < 0) + goto esu2; + } + + 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 = { + .driver = { + .name = "as3711-backlight", + .owner = THIS_MODULE, + }, + .probe = as3711_backlight_probe, + .remove = as3711_backlight_remove, +}; + +module_platform_driver(as3711_backlight_driver); + +MODULE_DESCRIPTION("Backlight Driver for AS3711 PMICs"); +MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:as3711-backlight"); diff --git a/drivers/video/backlight/corgi_lcd.c b/drivers/video/backlight/corgi_lcd.c index e323fcbe884e..aa782f302983 100644 --- a/drivers/video/backlight/corgi_lcd.c +++ b/drivers/video/backlight/corgi_lcd.c @@ -337,7 +337,7 @@ static void corgi_lcd_power_off(struct corgi_lcd *lcd) static int corgi_lcd_set_mode(struct lcd_device *ld, struct fb_videomode *m) { - struct corgi_lcd *lcd = dev_get_drvdata(&ld->dev); + struct corgi_lcd *lcd = lcd_get_data(ld); int mode = CORGI_LCD_MODE_QVGA; if (m->xres == 640 || m->xres == 480) @@ -364,7 +364,7 @@ static int corgi_lcd_set_mode(struct lcd_device *ld, struct fb_videomode *m) static int corgi_lcd_set_power(struct lcd_device *ld, int power) { - struct corgi_lcd *lcd = dev_get_drvdata(&ld->dev); + struct corgi_lcd *lcd = lcd_get_data(ld); if (POWER_IS_ON(power) && !POWER_IS_ON(lcd->power)) corgi_lcd_power_on(lcd); @@ -378,7 +378,7 @@ static int corgi_lcd_set_power(struct lcd_device *ld, int power) static int corgi_lcd_get_power(struct lcd_device *ld) { - struct corgi_lcd *lcd = dev_get_drvdata(&ld->dev); + struct corgi_lcd *lcd = lcd_get_data(ld); return lcd->power; } @@ -391,7 +391,7 @@ static struct lcd_ops corgi_lcd_ops = { static int corgi_bl_get_intensity(struct backlight_device *bd) { - struct corgi_lcd *lcd = dev_get_drvdata(&bd->dev); + struct corgi_lcd *lcd = bl_get_data(bd); return lcd->intensity; } @@ -423,7 +423,7 @@ static int corgi_bl_set_intensity(struct corgi_lcd *lcd, int intensity) static int corgi_bl_update_status(struct backlight_device *bd) { - struct corgi_lcd *lcd = dev_get_drvdata(&bd->dev); + struct corgi_lcd *lcd = bl_get_data(bd); int intensity = bd->props.brightness; if (bd->props.power != FB_BLANK_UNBLANK) @@ -460,7 +460,7 @@ static const struct backlight_ops corgi_bl_ops = { #ifdef CONFIG_PM static int corgi_lcd_suspend(struct spi_device *spi, pm_message_t state) { - struct corgi_lcd *lcd = dev_get_drvdata(&spi->dev); + struct corgi_lcd *lcd = spi_get_drvdata(spi); corgibl_flags |= CORGIBL_SUSPENDED; corgi_bl_set_intensity(lcd, 0); @@ -470,7 +470,7 @@ static int corgi_lcd_suspend(struct spi_device *spi, pm_message_t state) static int corgi_lcd_resume(struct spi_device *spi) { - struct corgi_lcd *lcd = dev_get_drvdata(&spi->dev); + struct corgi_lcd *lcd = spi_get_drvdata(spi); corgibl_flags &= ~CORGIBL_SUSPENDED; corgi_lcd_set_power(lcd->lcd_dev, FB_BLANK_UNBLANK); @@ -577,7 +577,7 @@ static int corgi_lcd_probe(struct spi_device *spi) lcd->kick_battery = pdata->kick_battery; - dev_set_drvdata(&spi->dev, lcd); + spi_set_drvdata(spi, lcd); corgi_lcd_set_power(lcd->lcd_dev, FB_BLANK_UNBLANK); backlight_update_status(lcd->bl_dev); @@ -594,7 +594,7 @@ err_unregister_lcd: static int corgi_lcd_remove(struct spi_device *spi) { - struct corgi_lcd *lcd = dev_get_drvdata(&spi->dev); + struct corgi_lcd *lcd = spi_get_drvdata(spi); lcd->bl_dev->props.power = FB_BLANK_UNBLANK; lcd->bl_dev->props.brightness = 0; diff --git a/drivers/video/backlight/hx8357.c b/drivers/video/backlight/hx8357.c new file mode 100644 index 000000000000..00925c0a79b9 --- /dev/null +++ b/drivers/video/backlight/hx8357.c @@ -0,0 +1,482 @@ +/* + * Driver for the Himax HX-8357 LCD Controller + * + * Copyright 2012 Free Electrons + * + * Licensed under the GPLv2 or later. + */ + +#include <linux/delay.h> +#include <linux/lcd.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_device.h> +#include <linux/of_gpio.h> +#include <linux/spi/spi.h> + +#define HX8357_NUM_IM_PINS 3 + +#define HX8357_SWRESET 0x01 +#define HX8357_GET_RED_CHANNEL 0x06 +#define HX8357_GET_GREEN_CHANNEL 0x07 +#define HX8357_GET_BLUE_CHANNEL 0x08 +#define HX8357_GET_POWER_MODE 0x0a +#define HX8357_GET_MADCTL 0x0b +#define HX8357_GET_PIXEL_FORMAT 0x0c +#define HX8357_GET_DISPLAY_MODE 0x0d +#define HX8357_GET_SIGNAL_MODE 0x0e +#define HX8357_GET_DIAGNOSTIC_RESULT 0x0f +#define HX8357_ENTER_SLEEP_MODE 0x10 +#define HX8357_EXIT_SLEEP_MODE 0x11 +#define HX8357_ENTER_PARTIAL_MODE 0x12 +#define HX8357_ENTER_NORMAL_MODE 0x13 +#define HX8357_EXIT_INVERSION_MODE 0x20 +#define HX8357_ENTER_INVERSION_MODE 0x21 +#define HX8357_SET_DISPLAY_OFF 0x28 +#define HX8357_SET_DISPLAY_ON 0x29 +#define HX8357_SET_COLUMN_ADDRESS 0x2a +#define HX8357_SET_PAGE_ADDRESS 0x2b +#define HX8357_WRITE_MEMORY_START 0x2c +#define HX8357_READ_MEMORY_START 0x2e +#define HX8357_SET_PARTIAL_AREA 0x30 +#define HX8357_SET_SCROLL_AREA 0x33 +#define HX8357_SET_TEAR_OFF 0x34 +#define HX8357_SET_TEAR_ON 0x35 +#define HX8357_SET_ADDRESS_MODE 0x36 +#define HX8357_SET_SCROLL_START 0x37 +#define HX8357_EXIT_IDLE_MODE 0x38 +#define HX8357_ENTER_IDLE_MODE 0x39 +#define HX8357_SET_PIXEL_FORMAT 0x3a +#define HX8357_SET_PIXEL_FORMAT_DBI_3BIT (0x1) +#define HX8357_SET_PIXEL_FORMAT_DBI_16BIT (0x5) +#define HX8357_SET_PIXEL_FORMAT_DBI_18BIT (0x6) +#define HX8357_SET_PIXEL_FORMAT_DPI_3BIT (0x1 << 4) +#define HX8357_SET_PIXEL_FORMAT_DPI_16BIT (0x5 << 4) +#define HX8357_SET_PIXEL_FORMAT_DPI_18BIT (0x6 << 4) +#define HX8357_WRITE_MEMORY_CONTINUE 0x3c +#define HX8357_READ_MEMORY_CONTINUE 0x3e +#define HX8357_SET_TEAR_SCAN_LINES 0x44 +#define HX8357_GET_SCAN_LINES 0x45 +#define HX8357_READ_DDB_START 0xa1 +#define HX8357_SET_DISPLAY_MODE 0xb4 +#define HX8357_SET_DISPLAY_MODE_RGB_THROUGH (0x3) +#define HX8357_SET_DISPLAY_MODE_RGB_INTERFACE (1 << 4) +#define HX8357_SET_PANEL_DRIVING 0xc0 +#define HX8357_SET_DISPLAY_FRAME 0xc5 +#define HX8357_SET_RGB 0xc6 +#define HX8357_SET_RGB_ENABLE_HIGH (1 << 1) +#define HX8357_SET_GAMMA 0xc8 +#define HX8357_SET_POWER 0xd0 +#define HX8357_SET_VCOM 0xd1 +#define HX8357_SET_POWER_NORMAL 0xd2 +#define HX8357_SET_PANEL_RELATED 0xe9 + +struct hx8357_data { + unsigned im_pins[HX8357_NUM_IM_PINS]; + unsigned reset; + struct spi_device *spi; + int state; +}; + +static int hx8357_spi_write_then_read(struct lcd_device *lcdev, + void *txbuf, u16 txlen, + void *rxbuf, u16 rxlen) +{ + struct hx8357_data *lcd = lcd_get_data(lcdev); + struct spi_message msg; + struct spi_transfer xfer[2]; + u16 *local_txbuf = NULL; + int ret = 0; + + memset(xfer, 0, sizeof(xfer)); + spi_message_init(&msg); + + if (txlen) { + int i; + + local_txbuf = kcalloc(sizeof(*local_txbuf), txlen, GFP_KERNEL); + + if (!local_txbuf) { + dev_err(&lcdev->dev, "Couldn't allocate data buffer.\n"); + return -ENOMEM; + } + + for (i = 0; i < txlen; i++) { + local_txbuf[i] = ((u8 *)txbuf)[i]; + if (i > 0) + local_txbuf[i] |= 1 << 8; + } + + xfer[0].len = 2 * txlen; + xfer[0].bits_per_word = 9; + xfer[0].tx_buf = local_txbuf; + spi_message_add_tail(&xfer[0], &msg); + } + + if (rxlen) { + xfer[1].len = rxlen; + xfer[1].bits_per_word = 8; + xfer[1].rx_buf = rxbuf; + spi_message_add_tail(&xfer[1], &msg); + } + + ret = spi_sync(lcd->spi, &msg); + if (ret < 0) + dev_err(&lcdev->dev, "Couldn't send SPI data.\n"); + + if (txlen) + kfree(local_txbuf); + + return ret; +} + +static inline int hx8357_spi_write_array(struct lcd_device *lcdev, + u8 *value, u8 len) +{ + return hx8357_spi_write_then_read(lcdev, value, len, NULL, 0); +} + +static inline int hx8357_spi_write_byte(struct lcd_device *lcdev, + u8 value) +{ + return hx8357_spi_write_then_read(lcdev, &value, 1, NULL, 0); +} + +static int hx8357_enter_standby(struct lcd_device *lcdev) +{ + int ret; + + ret = hx8357_spi_write_byte(lcdev, HX8357_SET_DISPLAY_OFF); + if (ret < 0) + return ret; + + usleep_range(10000, 12000); + + ret = hx8357_spi_write_byte(lcdev, HX8357_ENTER_SLEEP_MODE); + if (ret < 0) + return ret; + + msleep(120); + + return 0; +} + +static int hx8357_exit_standby(struct lcd_device *lcdev) +{ + int ret; + + ret = hx8357_spi_write_byte(lcdev, HX8357_EXIT_SLEEP_MODE); + if (ret < 0) + return ret; + + msleep(120); + + ret = hx8357_spi_write_byte(lcdev, HX8357_SET_DISPLAY_ON); + if (ret < 0) + return ret; + + return 0; +} + +static int hx8357_lcd_init(struct lcd_device *lcdev) +{ + struct hx8357_data *lcd = lcd_get_data(lcdev); + u8 buf[16]; + int ret; + + /* + * Set the interface selection pins to SPI mode, with three + * wires + */ + gpio_set_value_cansleep(lcd->im_pins[0], 1); + gpio_set_value_cansleep(lcd->im_pins[1], 0); + gpio_set_value_cansleep(lcd->im_pins[2], 1); + + /* Reset the screen */ + gpio_set_value(lcd->reset, 1); + usleep_range(10000, 12000); + gpio_set_value(lcd->reset, 0); + usleep_range(10000, 12000); + gpio_set_value(lcd->reset, 1); + msleep(120); + + buf[0] = HX8357_SET_POWER; + buf[1] = 0x44; + buf[2] = 0x41; + buf[3] = 0x06; + ret = hx8357_spi_write_array(lcdev, buf, 4); + if (ret < 0) + return ret; + + buf[0] = HX8357_SET_VCOM; + buf[1] = 0x40; + buf[2] = 0x10; + ret = hx8357_spi_write_array(lcdev, buf, 3); + if (ret < 0) + return ret; + + buf[0] = HX8357_SET_POWER_NORMAL; + buf[1] = 0x05; + buf[2] = 0x12; + ret = hx8357_spi_write_array(lcdev, buf, 3); + if (ret < 0) + return ret; + + buf[0] = HX8357_SET_PANEL_DRIVING; + buf[1] = 0x14; + buf[2] = 0x3b; + buf[3] = 0x00; + buf[4] = 0x02; + buf[5] = 0x11; + ret = hx8357_spi_write_array(lcdev, buf, 6); + if (ret < 0) + return ret; + + buf[0] = HX8357_SET_DISPLAY_FRAME; + buf[1] = 0x0c; + ret = hx8357_spi_write_array(lcdev, buf, 2); + if (ret < 0) + return ret; + + buf[0] = HX8357_SET_PANEL_RELATED; + buf[1] = 0x01; + ret = hx8357_spi_write_array(lcdev, buf, 2); + if (ret < 0) + return ret; + + buf[0] = 0xea; + buf[1] = 0x03; + buf[2] = 0x00; + buf[3] = 0x00; + ret = hx8357_spi_write_array(lcdev, buf, 4); + if (ret < 0) + return ret; + + buf[0] = 0xeb; + buf[1] = 0x40; + buf[2] = 0x54; + buf[3] = 0x26; + buf[4] = 0xdb; + ret = hx8357_spi_write_array(lcdev, buf, 5); + if (ret < 0) + return ret; + + buf[0] = HX8357_SET_GAMMA; + buf[1] = 0x00; + buf[2] = 0x15; + buf[3] = 0x00; + buf[4] = 0x22; + buf[5] = 0x00; + buf[6] = 0x08; + buf[7] = 0x77; + buf[8] = 0x26; + buf[9] = 0x77; + buf[10] = 0x22; + buf[11] = 0x04; + buf[12] = 0x00; + ret = hx8357_spi_write_array(lcdev, buf, 13); + if (ret < 0) + return ret; + + buf[0] = HX8357_SET_ADDRESS_MODE; + buf[1] = 0xc0; + ret = hx8357_spi_write_array(lcdev, buf, 2); + if (ret < 0) + return ret; + + buf[0] = HX8357_SET_PIXEL_FORMAT; + buf[1] = HX8357_SET_PIXEL_FORMAT_DPI_18BIT | + HX8357_SET_PIXEL_FORMAT_DBI_18BIT; + ret = hx8357_spi_write_array(lcdev, buf, 2); + if (ret < 0) + return ret; + + buf[0] = HX8357_SET_COLUMN_ADDRESS; + buf[1] = 0x00; + buf[2] = 0x00; + buf[3] = 0x01; + buf[4] = 0x3f; + ret = hx8357_spi_write_array(lcdev, buf, 5); + if (ret < 0) + return ret; + + buf[0] = HX8357_SET_PAGE_ADDRESS; + buf[1] = 0x00; + buf[2] = 0x00; + buf[3] = 0x01; + buf[4] = 0xdf; + ret = hx8357_spi_write_array(lcdev, buf, 5); + if (ret < 0) + return ret; + + buf[0] = HX8357_SET_RGB; + buf[1] = 0x02; + ret = hx8357_spi_write_array(lcdev, buf, 2); + if (ret < 0) + return ret; + + buf[0] = HX8357_SET_DISPLAY_MODE; + buf[1] = HX8357_SET_DISPLAY_MODE_RGB_THROUGH | + HX8357_SET_DISPLAY_MODE_RGB_INTERFACE; + ret = hx8357_spi_write_array(lcdev, buf, 2); + if (ret < 0) + return ret; + + ret = hx8357_spi_write_byte(lcdev, HX8357_EXIT_SLEEP_MODE); + if (ret < 0) + return ret; + + msleep(120); + + ret = hx8357_spi_write_byte(lcdev, HX8357_SET_DISPLAY_ON); + if (ret < 0) + return ret; + + usleep_range(5000, 7000); + + ret = hx8357_spi_write_byte(lcdev, HX8357_WRITE_MEMORY_START); + if (ret < 0) + return ret; + + return 0; +} + +#define POWER_IS_ON(pwr) ((pwr) <= FB_BLANK_NORMAL) + +static int hx8357_set_power(struct lcd_device *lcdev, int power) +{ + struct hx8357_data *lcd = lcd_get_data(lcdev); + int ret = 0; + + if (POWER_IS_ON(power) && !POWER_IS_ON(lcd->state)) + ret = hx8357_exit_standby(lcdev); + else if (!POWER_IS_ON(power) && POWER_IS_ON(lcd->state)) + ret = hx8357_enter_standby(lcdev); + + if (ret == 0) + lcd->state = power; + else + dev_warn(&lcdev->dev, "failed to set power mode %d\n", power); + + return ret; +} + +static int hx8357_get_power(struct lcd_device *lcdev) +{ + struct hx8357_data *lcd = lcd_get_data(lcdev); + + return lcd->state; +} + +static struct lcd_ops hx8357_ops = { + .set_power = hx8357_set_power, + .get_power = hx8357_get_power, +}; + +static int hx8357_probe(struct spi_device *spi) +{ + struct lcd_device *lcdev; + struct hx8357_data *lcd; + int i, ret; + + lcd = devm_kzalloc(&spi->dev, sizeof(*lcd), GFP_KERNEL); + if (!lcd) { + dev_err(&spi->dev, "Couldn't allocate lcd internal structure!\n"); + return -ENOMEM; + } + + ret = spi_setup(spi); + if (ret < 0) { + dev_err(&spi->dev, "SPI setup failed.\n"); + return ret; + } + + lcd->spi = spi; + + lcd->reset = of_get_named_gpio(spi->dev.of_node, "gpios-reset", 0); + if (!gpio_is_valid(lcd->reset)) { + dev_err(&spi->dev, "Missing dt property: gpios-reset\n"); + return -EINVAL; + } + + ret = devm_gpio_request_one(&spi->dev, lcd->reset, + GPIOF_OUT_INIT_HIGH, + "hx8357-reset"); + if (ret) { + dev_err(&spi->dev, + "failed to request gpio %d: %d\n", + lcd->reset, ret); + return -EINVAL; + } + + for (i = 0; i < HX8357_NUM_IM_PINS; i++) { + lcd->im_pins[i] = of_get_named_gpio(spi->dev.of_node, + "im-gpios", i); + if (lcd->im_pins[i] == -EPROBE_DEFER) { + dev_info(&spi->dev, "GPIO requested is not here yet, deferring the probe\n"); + return -EPROBE_DEFER; + } + if (!gpio_is_valid(lcd->im_pins[i])) { + dev_err(&spi->dev, "Missing dt property: im-gpios\n"); + return -EINVAL; + } + + ret = devm_gpio_request_one(&spi->dev, lcd->im_pins[i], + GPIOF_OUT_INIT_LOW, "im_pins"); + if (ret) { + dev_err(&spi->dev, "failed to request gpio %d: %d\n", + lcd->im_pins[i], ret); + return -EINVAL; + } + } + + lcdev = lcd_device_register("mxsfb", &spi->dev, lcd, &hx8357_ops); + if (IS_ERR(lcdev)) { + ret = PTR_ERR(lcdev); + return ret; + } + spi_set_drvdata(spi, lcdev); + + ret = hx8357_lcd_init(lcdev); + if (ret) { + dev_err(&spi->dev, "Couldn't initialize panel\n"); + goto init_error; + } + + 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 const struct of_device_id hx8357_dt_ids[] = { + { .compatible = "himax,hx8357" }, + {}, +}; +MODULE_DEVICE_TABLE(of, hx8357_dt_ids); + +static struct spi_driver hx8357_driver = { + .probe = hx8357_probe, + .remove = hx8357_remove, + .driver = { + .name = "hx8357", + .of_match_table = of_match_ptr(hx8357_dt_ids), + }, +}; + +module_spi_driver(hx8357_driver); + +MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com>"); +MODULE_DESCRIPTION("Himax HX-8357 LCD Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/video/backlight/l4f00242t03.c b/drivers/video/backlight/l4f00242t03.c index 9a35196d12d7..fb6155771326 100644 --- a/drivers/video/backlight/l4f00242t03.c +++ b/drivers/video/backlight/l4f00242t03.c @@ -49,7 +49,7 @@ 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_priv *priv = dev_get_drvdata(&spi->dev); + struct l4f00242t03_priv *priv = spi_get_drvdata(spi); const u16 cmd[] = { 0x36, param(0), 0x3A, param(0x60) }; dev_dbg(&spi->dev, "initializing LCD\n"); @@ -70,7 +70,7 @@ 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_priv *priv = dev_get_drvdata(&spi->dev); + struct l4f00242t03_priv *priv = spi_get_drvdata(spi); dev_dbg(&spi->dev, "Powering down LCD\n"); @@ -168,7 +168,7 @@ static int l4f00242t03_probe(struct spi_device *spi) return -ENOMEM; } - dev_set_drvdata(&spi->dev, priv); + spi_set_drvdata(spi, priv); spi->bits_per_word = 9; spi_setup(spi); @@ -190,27 +190,24 @@ static int l4f00242t03_probe(struct spi_device *spi) return ret; } - priv->io_reg = regulator_get(&spi->dev, "vdd"); + priv->io_reg = devm_regulator_get(&spi->dev, "vdd"); if (IS_ERR(priv->io_reg)) { dev_err(&spi->dev, "%s: Unable to get the IO regulator\n", __func__); return PTR_ERR(priv->io_reg); } - priv->core_reg = regulator_get(&spi->dev, "vcore"); + priv->core_reg = devm_regulator_get(&spi->dev, "vcore"); if (IS_ERR(priv->core_reg)) { - ret = PTR_ERR(priv->core_reg); dev_err(&spi->dev, "%s: Unable to get the core regulator\n", __func__); - goto err1; + return PTR_ERR(priv->core_reg); } priv->ld = lcd_device_register("l4f00242t03", &spi->dev, priv, &l4f_ops); - if (IS_ERR(priv->ld)) { - ret = PTR_ERR(priv->ld); - goto err2; - } + if (IS_ERR(priv->ld)) + return PTR_ERR(priv->ld); /* Init the LCD */ l4f00242t03_lcd_init(spi); @@ -220,33 +217,22 @@ static int l4f00242t03_probe(struct spi_device *spi) dev_info(&spi->dev, "Epson l4f00242t03 lcd probed.\n"); return 0; - -err2: - regulator_put(priv->core_reg); -err1: - regulator_put(priv->io_reg); - - return ret; } static int l4f00242t03_remove(struct spi_device *spi) { - struct l4f00242t03_priv *priv = dev_get_drvdata(&spi->dev); + struct l4f00242t03_priv *priv = spi_get_drvdata(spi); l4f00242t03_lcd_power_set(priv->ld, FB_BLANK_POWERDOWN); lcd_device_unregister(priv->ld); - - dev_set_drvdata(&spi->dev, NULL); - - regulator_put(priv->io_reg); - regulator_put(priv->core_reg); + spi_set_drvdata(spi, NULL); return 0; } static void l4f00242t03_shutdown(struct spi_device *spi) { - struct l4f00242t03_priv *priv = dev_get_drvdata(&spi->dev); + struct l4f00242t03_priv *priv = spi_get_drvdata(spi); if (priv) l4f00242t03_lcd_power_set(priv->ld, FB_BLANK_POWERDOWN); diff --git a/drivers/video/backlight/ld9040.c b/drivers/video/backlight/ld9040.c index 1cb352418513..1b642f5f381a 100644 --- a/drivers/video/backlight/ld9040.c +++ b/drivers/video/backlight/ld9040.c @@ -9,29 +9,20 @@ * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -#include <linux/wait.h> -#include <linux/fb.h> +#include <linux/backlight.h> #include <linux/delay.h> +#include <linux/fb.h> #include <linux/gpio.h> -#include <linux/spi/spi.h> -#include <linux/irq.h> #include <linux/interrupt.h> +#include <linux/irq.h> #include <linux/kernel.h> #include <linux/lcd.h> -#include <linux/backlight.h> #include <linux/module.h> #include <linux/regulator/consumer.h> +#include <linux/spi/spi.h> +#include <linux/wait.h> #include "ld9040_gamma.h" @@ -43,7 +34,6 @@ #define MIN_BRIGHTNESS 0 #define MAX_BRIGHTNESS 24 -#define power_is_on(pwr) ((pwr) <= FB_BLANK_NORMAL) struct ld9040 { struct device *dev; @@ -78,7 +68,7 @@ static void ld9040_regulator_enable(struct ld9040 *lcd) lcd->enabled = true; } - mdelay(pd->power_on_delay); + msleep(pd->power_on_delay); out: mutex_unlock(&lcd->lock); } @@ -474,8 +464,9 @@ static int ld9040_panel_send_sequence(struct ld9040 *lcd, ret = ld9040_spi_write(lcd, wbuf[i], wbuf[i+1]); if (ret) break; - } else - udelay(wbuf[i+1]*1000); + } else { + msleep(wbuf[i+1]); + } i += 2; } @@ -513,14 +504,9 @@ gamma_err: static int ld9040_gamma_ctl(struct ld9040 *lcd, int gamma) { - int ret = 0; - - ret = _ld9040_gamma_ctl(lcd, gamma_table.gamma_22_table[gamma]); - - return ret; + return _ld9040_gamma_ctl(lcd, gamma_table.gamma_22_table[gamma]); } - static int ld9040_ldi_init(struct ld9040 *lcd) { int ret, i; @@ -539,7 +525,7 @@ static int ld9040_ldi_init(struct ld9040 *lcd) for (i = 0; i < ARRAY_SIZE(init_seq); i++) { ret = ld9040_panel_send_sequence(lcd, init_seq[i]); /* workaround: minimum delay time for transferring CMD */ - udelay(300); + usleep_range(300, 310); if (ret) break; } @@ -549,11 +535,7 @@ static int ld9040_ldi_init(struct ld9040 *lcd) static int ld9040_ldi_enable(struct ld9040 *lcd) { - int ret = 0; - - ret = ld9040_panel_send_sequence(lcd, seq_display_on); - - return ret; + return ld9040_panel_send_sequence(lcd, seq_display_on); } static int ld9040_ldi_disable(struct ld9040 *lcd) @@ -566,25 +548,27 @@ static int ld9040_ldi_disable(struct ld9040 *lcd) return ret; } +static int ld9040_power_is_on(int power) +{ + return power <= FB_BLANK_NORMAL; +} + static int ld9040_power_on(struct ld9040 *lcd) { int ret = 0; - struct lcd_platform_data *pd = NULL; + struct lcd_platform_data *pd; + pd = lcd->lcd_pd; - if (!pd) { - dev_err(lcd->dev, "platform data is NULL.\n"); - return -EFAULT; - } /* lcd power on */ ld9040_regulator_enable(lcd); if (!pd->reset) { dev_err(lcd->dev, "reset is NULL.\n"); - return -EFAULT; + return -EINVAL; } else { pd->reset(lcd->ld); - mdelay(pd->reset_delay); + msleep(pd->reset_delay); } ret = ld9040_ldi_init(lcd); @@ -604,14 +588,10 @@ static int ld9040_power_on(struct ld9040 *lcd) static int ld9040_power_off(struct ld9040 *lcd) { - int ret = 0; - struct lcd_platform_data *pd = NULL; + int ret; + struct lcd_platform_data *pd; pd = lcd->lcd_pd; - if (!pd) { - dev_err(lcd->dev, "platform data is NULL.\n"); - return -EFAULT; - } ret = ld9040_ldi_disable(lcd); if (ret) { @@ -619,7 +599,7 @@ static int ld9040_power_off(struct ld9040 *lcd) return -EIO; } - mdelay(pd->power_off_delay); + msleep(pd->power_off_delay); /* lcd power off */ ld9040_regulator_disable(lcd); @@ -631,9 +611,9 @@ static int ld9040_power(struct ld9040 *lcd, int power) { int ret = 0; - if (power_is_on(power) && !power_is_on(lcd->power)) + if (ld9040_power_is_on(power) && !ld9040_power_is_on(lcd->power)) ret = ld9040_power_on(lcd); - else if (!power_is_on(power) && power_is_on(lcd->power)) + else if (!ld9040_power_is_on(power) && ld9040_power_is_on(lcd->power)) ret = ld9040_power_off(lcd); if (!ret) @@ -698,7 +678,6 @@ static const struct backlight_ops ld9040_backlight_ops = { .update_status = ld9040_set_brightness, }; - static int ld9040_probe(struct spi_device *spi) { int ret = 0; @@ -726,22 +705,20 @@ static int ld9040_probe(struct spi_device *spi) lcd->lcd_pd = spi->dev.platform_data; if (!lcd->lcd_pd) { dev_err(&spi->dev, "platform data is NULL.\n"); - return -EFAULT; + return -EINVAL; } mutex_init(&lcd->lock); - ret = regulator_bulk_get(lcd->dev, ARRAY_SIZE(supplies), supplies); + ret = devm_regulator_bulk_get(lcd->dev, ARRAY_SIZE(supplies), supplies); if (ret) { dev_err(lcd->dev, "Failed to get regulators: %d\n", ret); return ret; } ld = lcd_device_register("ld9040", &spi->dev, lcd, &ld9040_lcd_ops); - if (IS_ERR(ld)) { - ret = PTR_ERR(ld); - goto out_free_regulator; - } + if (IS_ERR(ld)) + return PTR_ERR(ld); lcd->ld = ld; @@ -772,30 +749,28 @@ static int ld9040_probe(struct spi_device *spi) lcd->power = FB_BLANK_POWERDOWN; ld9040_power(lcd, FB_BLANK_UNBLANK); - } else + } else { lcd->power = FB_BLANK_UNBLANK; + } - dev_set_drvdata(&spi->dev, lcd); + spi_set_drvdata(spi, lcd); dev_info(&spi->dev, "ld9040 panel driver has been probed.\n"); return 0; out_unregister_lcd: lcd_device_unregister(lcd->ld); -out_free_regulator: - regulator_bulk_free(ARRAY_SIZE(supplies), supplies); return ret; } static int ld9040_remove(struct spi_device *spi) { - struct ld9040 *lcd = dev_get_drvdata(&spi->dev); + struct ld9040 *lcd = spi_get_drvdata(spi); ld9040_power(lcd, FB_BLANK_POWERDOWN); backlight_device_unregister(lcd->bd); lcd_device_unregister(lcd->ld); - regulator_bulk_free(ARRAY_SIZE(supplies), supplies); return 0; } @@ -803,8 +778,7 @@ static int ld9040_remove(struct spi_device *spi) #if defined(CONFIG_PM) static int ld9040_suspend(struct spi_device *spi, pm_message_t mesg) { - int ret = 0; - struct ld9040 *lcd = dev_get_drvdata(&spi->dev); + struct ld9040 *lcd = spi_get_drvdata(spi); dev_dbg(&spi->dev, "lcd->power = %d\n", lcd->power); @@ -812,21 +786,16 @@ static int ld9040_suspend(struct spi_device *spi, pm_message_t mesg) * when lcd panel is suspend, lcd panel becomes off * regardless of status. */ - ret = ld9040_power(lcd, FB_BLANK_POWERDOWN); - - return ret; + return ld9040_power(lcd, FB_BLANK_POWERDOWN); } static int ld9040_resume(struct spi_device *spi) { - int ret = 0; - struct ld9040 *lcd = dev_get_drvdata(&spi->dev); + struct ld9040 *lcd = spi_get_drvdata(spi); lcd->power = FB_BLANK_POWERDOWN; - ret = ld9040_power(lcd, FB_BLANK_UNBLANK); - - return ret; + return ld9040_power(lcd, FB_BLANK_UNBLANK); } #else #define ld9040_suspend NULL @@ -836,7 +805,7 @@ static int ld9040_resume(struct spi_device *spi) /* Power down all displays on reboot, poweroff or halt. */ static void ld9040_shutdown(struct spi_device *spi) { - struct ld9040 *lcd = dev_get_drvdata(&spi->dev); + struct ld9040 *lcd = spi_get_drvdata(spi); ld9040_power(lcd, FB_BLANK_POWERDOWN); } diff --git a/drivers/video/backlight/lm3630_bl.c b/drivers/video/backlight/lm3630_bl.c index a6d637b5c68f..76a62e978fc3 100644 --- a/drivers/video/backlight/lm3630_bl.c +++ b/drivers/video/backlight/lm3630_bl.c @@ -320,7 +320,7 @@ static int lm3630_backlight_register(struct lm3630_chip_data *pchip, backlight_device_register(name, pchip->dev, pchip, &lm3630_bank_a_ops, &props); if (IS_ERR(pchip->bled1)) - return -EIO; + return PTR_ERR(pchip->bled1); break; case BLED_2: props.brightness = pdata->init_brt_led2; @@ -329,7 +329,7 @@ static int lm3630_backlight_register(struct lm3630_chip_data *pchip, backlight_device_register(name, pchip->dev, pchip, &lm3630_bank_b_ops, &props); if (IS_ERR(pchip->bled2)) - return -EIO; + return PTR_ERR(pchip->bled2); break; } return 0; diff --git a/drivers/video/backlight/lm3639_bl.c b/drivers/video/backlight/lm3639_bl.c index 7ab2d2a04e41..053964da8dd3 100644 --- a/drivers/video/backlight/lm3639_bl.c +++ b/drivers/video/backlight/lm3639_bl.c @@ -350,14 +350,13 @@ static int lm3639_probe(struct i2c_client *client, &lm3639_bled_ops, &props); if (IS_ERR(pchip->bled)) { dev_err(&client->dev, "fail : backlight register\n"); - ret = -EIO; + ret = PTR_ERR(pchip->bled); goto err_out; } ret = device_create_file(&(pchip->bled->dev), &dev_attr_bled_mode); if (ret < 0) { dev_err(&client->dev, "failed : add sysfs entries\n"); - ret = -EIO; goto err_bled_mode; } @@ -369,7 +368,6 @@ static int lm3639_probe(struct i2c_client *client, &client->dev, &pchip->cdev_flash); if (ret < 0) { dev_err(&client->dev, "fail : flash register\n"); - ret = -EIO; goto err_flash; } @@ -381,7 +379,6 @@ static int lm3639_probe(struct i2c_client *client, &client->dev, &pchip->cdev_torch); if (ret < 0) { dev_err(&client->dev, "fail : torch register\n"); - ret = -EIO; goto err_torch; } diff --git a/drivers/video/backlight/lms283gf05.c b/drivers/video/backlight/lms283gf05.c index 55819b384701..4eec47261cd3 100644 --- a/drivers/video/backlight/lms283gf05.c +++ b/drivers/video/backlight/lms283gf05.c @@ -180,7 +180,7 @@ static int lms283gf05_probe(struct spi_device *spi) st->spi = spi; st->ld = ld; - dev_set_drvdata(&spi->dev, st); + spi_set_drvdata(spi, st); /* kick in the LCD */ if (pdata) @@ -192,7 +192,7 @@ static int lms283gf05_probe(struct spi_device *spi) static int lms283gf05_remove(struct spi_device *spi) { - struct lms283gf05_state *st = dev_get_drvdata(&spi->dev); + struct lms283gf05_state *st = spi_get_drvdata(spi); lcd_device_unregister(st->ld); diff --git a/drivers/video/backlight/lms501kf03.c b/drivers/video/backlight/lms501kf03.c new file mode 100644 index 000000000000..b43882abefaf --- /dev/null +++ b/drivers/video/backlight/lms501kf03.c @@ -0,0 +1,441 @@ +/* + * lms501kf03 TFT LCD panel driver. + * + * Copyright (c) 2012 Samsung Electronics Co., Ltd. + * Author: Jingoo Han <jg1.han@samsung.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include <linux/backlight.h> +#include <linux/delay.h> +#include <linux/fb.h> +#include <linux/gpio.h> +#include <linux/lcd.h> +#include <linux/module.h> +#include <linux/spi/spi.h> +#include <linux/wait.h> + +#define COMMAND_ONLY 0x00 +#define DATA_ONLY 0x01 + +struct lms501kf03 { + struct device *dev; + struct spi_device *spi; + unsigned int power; + struct lcd_device *ld; + struct lcd_platform_data *lcd_pd; +}; + +static const unsigned char seq_password[] = { + 0xb9, 0xff, 0x83, 0x69, +}; + +static const unsigned char seq_power[] = { + 0xb1, 0x01, 0x00, 0x34, 0x06, 0x00, 0x14, 0x14, 0x20, 0x28, + 0x12, 0x12, 0x17, 0x0a, 0x01, 0xe6, 0xe6, 0xe6, 0xe6, 0xe6, +}; + +static const unsigned char seq_display[] = { + 0xb2, 0x00, 0x2b, 0x03, 0x03, 0x70, 0x00, 0xff, 0x00, 0x00, + 0x00, 0x00, 0x03, 0x03, 0x00, 0x01, +}; + +static const unsigned char seq_rgb_if[] = { + 0xb3, 0x09, +}; + +static const unsigned char seq_display_inv[] = { + 0xb4, 0x01, 0x08, 0x77, 0x0e, 0x06, +}; + +static const unsigned char seq_vcom[] = { + 0xb6, 0x4c, 0x2e, +}; + +static const unsigned char seq_gate[] = { + 0xd5, 0x00, 0x05, 0x03, 0x29, 0x01, 0x07, 0x17, 0x68, 0x13, + 0x37, 0x20, 0x31, 0x8a, 0x46, 0x9b, 0x57, 0x13, 0x02, 0x75, + 0xb9, 0x64, 0xa8, 0x07, 0x0f, 0x04, 0x07, +}; + +static const unsigned char seq_panel[] = { + 0xcc, 0x02, +}; + +static const unsigned char seq_col_mod[] = { + 0x3a, 0x77, +}; + +static const unsigned char seq_w_gamma[] = { + 0xe0, 0x00, 0x04, 0x09, 0x0f, 0x1f, 0x3f, 0x1f, 0x2f, 0x0a, + 0x0f, 0x10, 0x16, 0x18, 0x16, 0x17, 0x0d, 0x15, 0x00, 0x04, + 0x09, 0x0f, 0x38, 0x3f, 0x20, 0x39, 0x0a, 0x0f, 0x10, 0x16, + 0x18, 0x16, 0x17, 0x0d, 0x15, +}; + +static const unsigned char seq_rgb_gamma[] = { + 0xc1, 0x01, 0x03, 0x07, 0x0f, 0x1a, 0x22, 0x2c, 0x33, 0x3c, + 0x46, 0x4f, 0x58, 0x60, 0x69, 0x71, 0x79, 0x82, 0x89, 0x92, + 0x9a, 0xa1, 0xa9, 0xb1, 0xb9, 0xc1, 0xc9, 0xcf, 0xd6, 0xde, + 0xe5, 0xec, 0xf3, 0xf9, 0xff, 0xdd, 0x39, 0x07, 0x1c, 0xcb, + 0xab, 0x5f, 0x49, 0x80, 0x03, 0x07, 0x0f, 0x19, 0x20, 0x2a, + 0x31, 0x39, 0x42, 0x4b, 0x53, 0x5b, 0x63, 0x6b, 0x73, 0x7b, + 0x83, 0x8a, 0x92, 0x9b, 0xa2, 0xaa, 0xb2, 0xba, 0xc2, 0xca, + 0xd0, 0xd8, 0xe1, 0xe8, 0xf0, 0xf8, 0xff, 0xf7, 0xd8, 0xbe, + 0xa7, 0x39, 0x40, 0x85, 0x8c, 0xc0, 0x04, 0x07, 0x0c, 0x17, + 0x1c, 0x23, 0x2b, 0x34, 0x3b, 0x43, 0x4c, 0x54, 0x5b, 0x63, + 0x6a, 0x73, 0x7a, 0x82, 0x8a, 0x91, 0x98, 0xa1, 0xa8, 0xb0, + 0xb7, 0xc1, 0xc9, 0xcf, 0xd9, 0xe3, 0xea, 0xf4, 0xff, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +}; + +static const unsigned char seq_up_dn[] = { + 0x36, 0x10, +}; + +static const unsigned char seq_sleep_in[] = { + 0x10, +}; + +static const unsigned char seq_sleep_out[] = { + 0x11, +}; + +static const unsigned char seq_display_on[] = { + 0x29, +}; + +static const unsigned char seq_display_off[] = { + 0x10, +}; + +static int lms501kf03_spi_write_byte(struct lms501kf03 *lcd, int addr, int data) +{ + u16 buf[1]; + struct spi_message msg; + + struct spi_transfer xfer = { + .len = 2, + .tx_buf = buf, + }; + + buf[0] = (addr << 8) | data; + + spi_message_init(&msg); + spi_message_add_tail(&xfer, &msg); + + return spi_sync(lcd->spi, &msg); +} + +static int lms501kf03_spi_write(struct lms501kf03 *lcd, unsigned char address, + unsigned char command) +{ + return lms501kf03_spi_write_byte(lcd, address, command); +} + +static int lms501kf03_panel_send_sequence(struct lms501kf03 *lcd, + const unsigned char *wbuf, + unsigned int len) +{ + int ret = 0, i = 0; + + while (i < len) { + if (i == 0) + ret = lms501kf03_spi_write(lcd, COMMAND_ONLY, wbuf[i]); + else + ret = lms501kf03_spi_write(lcd, DATA_ONLY, wbuf[i]); + if (ret) + break; + i += 1; + } + + return ret; +} + +static int lms501kf03_ldi_init(struct lms501kf03 *lcd) +{ + int ret, i; + static const unsigned char *init_seq[] = { + seq_password, + seq_power, + seq_display, + seq_rgb_if, + seq_display_inv, + seq_vcom, + seq_gate, + seq_panel, + seq_col_mod, + seq_w_gamma, + seq_rgb_gamma, + seq_sleep_out, + }; + + static const unsigned int size_seq[] = { + ARRAY_SIZE(seq_password), + ARRAY_SIZE(seq_power), + ARRAY_SIZE(seq_display), + ARRAY_SIZE(seq_rgb_if), + ARRAY_SIZE(seq_display_inv), + ARRAY_SIZE(seq_vcom), + ARRAY_SIZE(seq_gate), + ARRAY_SIZE(seq_panel), + ARRAY_SIZE(seq_col_mod), + ARRAY_SIZE(seq_w_gamma), + ARRAY_SIZE(seq_rgb_gamma), + ARRAY_SIZE(seq_sleep_out), + }; + + for (i = 0; i < ARRAY_SIZE(init_seq); i++) { + ret = lms501kf03_panel_send_sequence(lcd, init_seq[i], + size_seq[i]); + if (ret) + break; + } + /* + * According to the datasheet, 120ms delay time is required. + * After sleep out sequence, command is blocked for 120ms. + * Thus, LDI should wait for 120ms. + */ + msleep(120); + + return ret; +} + +static int lms501kf03_ldi_enable(struct lms501kf03 *lcd) +{ + return lms501kf03_panel_send_sequence(lcd, seq_display_on, + ARRAY_SIZE(seq_display_on)); +} + +static int lms501kf03_ldi_disable(struct lms501kf03 *lcd) +{ + return lms501kf03_panel_send_sequence(lcd, seq_display_off, + ARRAY_SIZE(seq_display_off)); +} + +static int lms501kf03_power_is_on(int power) +{ + return (power) <= FB_BLANK_NORMAL; +} + +static int lms501kf03_power_on(struct lms501kf03 *lcd) +{ + int ret = 0; + struct lcd_platform_data *pd; + + pd = lcd->lcd_pd; + + if (!pd->power_on) { + dev_err(lcd->dev, "power_on is NULL.\n"); + return -EINVAL; + } else { + pd->power_on(lcd->ld, 1); + msleep(pd->power_on_delay); + } + + if (!pd->reset) { + dev_err(lcd->dev, "reset is NULL.\n"); + return -EINVAL; + } else { + pd->reset(lcd->ld); + msleep(pd->reset_delay); + } + + ret = lms501kf03_ldi_init(lcd); + if (ret) { + dev_err(lcd->dev, "failed to initialize ldi.\n"); + return ret; + } + + ret = lms501kf03_ldi_enable(lcd); + if (ret) { + dev_err(lcd->dev, "failed to enable ldi.\n"); + return ret; + } + + return 0; +} + +static int lms501kf03_power_off(struct lms501kf03 *lcd) +{ + int ret = 0; + struct lcd_platform_data *pd; + + pd = lcd->lcd_pd; + + ret = lms501kf03_ldi_disable(lcd); + if (ret) { + dev_err(lcd->dev, "lcd setting failed.\n"); + return -EIO; + } + + msleep(pd->power_off_delay); + + pd->power_on(lcd->ld, 0); + + return 0; +} + +static int lms501kf03_power(struct lms501kf03 *lcd, int power) +{ + int ret = 0; + + if (lms501kf03_power_is_on(power) && + !lms501kf03_power_is_on(lcd->power)) + ret = lms501kf03_power_on(lcd); + else if (!lms501kf03_power_is_on(power) && + lms501kf03_power_is_on(lcd->power)) + ret = lms501kf03_power_off(lcd); + + if (!ret) + lcd->power = power; + + return ret; +} + +static int lms501kf03_get_power(struct lcd_device *ld) +{ + struct lms501kf03 *lcd = lcd_get_data(ld); + + return lcd->power; +} + +static int lms501kf03_set_power(struct lcd_device *ld, int power) +{ + struct lms501kf03 *lcd = lcd_get_data(ld); + + if (power != FB_BLANK_UNBLANK && power != FB_BLANK_POWERDOWN && + power != FB_BLANK_NORMAL) { + dev_err(lcd->dev, "power value should be 0, 1 or 4.\n"); + return -EINVAL; + } + + return lms501kf03_power(lcd, power); +} + +static struct lcd_ops lms501kf03_lcd_ops = { + .get_power = lms501kf03_get_power, + .set_power = lms501kf03_set_power, +}; + +static int lms501kf03_probe(struct spi_device *spi) +{ + struct lms501kf03 *lcd = NULL; + struct lcd_device *ld = NULL; + int ret = 0; + + lcd = devm_kzalloc(&spi->dev, sizeof(struct lms501kf03), GFP_KERNEL); + if (!lcd) + return -ENOMEM; + + /* lms501kf03 lcd panel uses 3-wire 9-bit SPI Mode. */ + spi->bits_per_word = 9; + + ret = spi_setup(spi); + if (ret < 0) { + dev_err(&spi->dev, "spi setup failed.\n"); + return ret; + } + + lcd->spi = spi; + lcd->dev = &spi->dev; + + lcd->lcd_pd = spi->dev.platform_data; + 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); + if (IS_ERR(ld)) + return PTR_ERR(ld); + + lcd->ld = ld; + + if (!lcd->lcd_pd->lcd_enabled) { + /* + * if lcd panel was off from bootloader then + * current lcd status is powerdown and then + * it enables lcd panel. + */ + lcd->power = FB_BLANK_POWERDOWN; + + lms501kf03_power(lcd, FB_BLANK_UNBLANK); + } else { + lcd->power = FB_BLANK_UNBLANK; + } + + spi_set_drvdata(spi, lcd); + + dev_info(&spi->dev, "lms501kf03 panel driver has been probed.\n"); + + return 0; +} + +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; +} + +#if defined(CONFIG_PM) + +static int lms501kf03_suspend(struct spi_device *spi, pm_message_t mesg) +{ + struct lms501kf03 *lcd = spi_get_drvdata(spi); + + dev_dbg(&spi->dev, "lcd->power = %d\n", lcd->power); + + /* + * when lcd panel is suspend, lcd panel becomes off + * regardless of status. + */ + return lms501kf03_power(lcd, FB_BLANK_POWERDOWN); +} + +static int lms501kf03_resume(struct spi_device *spi) +{ + struct lms501kf03 *lcd = spi_get_drvdata(spi); + + lcd->power = FB_BLANK_POWERDOWN; + + return lms501kf03_power(lcd, FB_BLANK_UNBLANK); +} +#else +#define lms501kf03_suspend NULL +#define lms501kf03_resume NULL +#endif + +static void lms501kf03_shutdown(struct spi_device *spi) +{ + struct lms501kf03 *lcd = spi_get_drvdata(spi); + + lms501kf03_power(lcd, FB_BLANK_POWERDOWN); +} + +static struct spi_driver lms501kf03_driver = { + .driver = { + .name = "lms501kf03", + .owner = THIS_MODULE, + }, + .probe = lms501kf03_probe, + .remove = lms501kf03_remove, + .shutdown = lms501kf03_shutdown, + .suspend = lms501kf03_suspend, + .resume = lms501kf03_resume, +}; + +module_spi_driver(lms501kf03_driver); + +MODULE_AUTHOR("Jingoo Han <jg1.han@samsung.com>"); +MODULE_DESCRIPTION("lms501kf03 LCD Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/video/backlight/lp8788_bl.c b/drivers/video/backlight/lp8788_bl.c new file mode 100644 index 000000000000..fbf17bcd855c --- /dev/null +++ b/drivers/video/backlight/lp8788_bl.c @@ -0,0 +1,350 @@ +/* + * TI LP8788 MFD - backlight driver + * + * Copyright 2012 Texas Instruments + * + * Author: Milo(Woogyom) Kim <milo.kim@ti.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 + * published by the Free Software Foundation. + * + */ + +#include <linux/backlight.h> +#include <linux/err.h> +#include <linux/mfd/lp8788.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/pwm.h> +#include <linux/slab.h> + +/* register address */ +#define LP8788_BL_CONFIG 0x96 +#define LP8788_BL_BRIGHTNESS 0x97 +#define LP8788_BL_RAMP 0x98 + +/* mask/shift bits */ +#define LP8788_BL_EN BIT(0) /* Addr 96h */ +#define LP8788_BL_PWM_EN BIT(5) +#define LP8788_BL_FULLSCALE_S 2 +#define LP8788_BL_DIM_MODE_S 1 +#define LP8788_BL_PWM_POLARITY_S 6 +#define LP8788_BL_RAMP_RISE_S 4 /* Addr 98h */ + +#define BUF_SIZE 20 +#define MAX_BRIGHTNESS 127 +#define DEFAULT_BL_NAME "lcd-backlight" + +struct lp8788_bl_config { + enum lp8788_bl_ctrl_mode bl_mode; + enum lp8788_bl_dim_mode dim_mode; + enum lp8788_bl_full_scale_current full_scale; + enum lp8788_bl_ramp_step rise_time; + enum lp8788_bl_ramp_step fall_time; + enum lp8788_bl_pwm_polarity pwm_pol; +}; + +struct lp8788_bl { + struct lp8788 *lp; + struct backlight_device *bl_dev; + struct lp8788_backlight_platform_data *pdata; + enum lp8788_bl_ctrl_mode mode; + struct pwm_device *pwm; +}; + +struct lp8788_bl_config default_bl_config = { + .bl_mode = LP8788_BL_REGISTER_ONLY, + .dim_mode = LP8788_DIM_EXPONENTIAL, + .full_scale = LP8788_FULLSCALE_1900uA, + .rise_time = LP8788_RAMP_8192us, + .fall_time = LP8788_RAMP_8192us, + .pwm_pol = LP8788_PWM_ACTIVE_HIGH, +}; + +static inline bool is_brightness_ctrl_by_pwm(enum lp8788_bl_ctrl_mode mode) +{ + return (mode == LP8788_BL_COMB_PWM_BASED); +} + +static inline bool is_brightness_ctrl_by_register(enum lp8788_bl_ctrl_mode mode) +{ + return (mode == LP8788_BL_REGISTER_ONLY || + mode == LP8788_BL_COMB_REGISTER_BASED); +} + +static int lp8788_backlight_configure(struct lp8788_bl *bl) +{ + struct lp8788_backlight_platform_data *pdata = bl->pdata; + struct lp8788_bl_config *cfg = &default_bl_config; + int ret; + u8 val; + + /* update chip configuration if platform data exists, + otherwise use the default settings */ + if (pdata) { + cfg->bl_mode = pdata->bl_mode; + cfg->dim_mode = pdata->dim_mode; + cfg->full_scale = pdata->full_scale; + cfg->rise_time = pdata->rise_time; + cfg->fall_time = pdata->fall_time; + cfg->pwm_pol = pdata->pwm_pol; + } + + /* brightness ramp up/down */ + val = (cfg->rise_time << LP8788_BL_RAMP_RISE_S) | cfg->fall_time; + ret = lp8788_write_byte(bl->lp, LP8788_BL_RAMP, val); + if (ret) { + /* no I2C needed in case of pwm control mode */ + if (is_brightness_ctrl_by_pwm(cfg->bl_mode)) + goto no_err; + else + return ret; + } + + /* fullscale current setting */ + val = (cfg->full_scale << LP8788_BL_FULLSCALE_S) | + (cfg->dim_mode << LP8788_BL_DIM_MODE_S); + + /* brightness control mode */ + switch (cfg->bl_mode) { + case LP8788_BL_REGISTER_ONLY: + val |= LP8788_BL_EN; + break; + case LP8788_BL_COMB_PWM_BASED: + case LP8788_BL_COMB_REGISTER_BASED: + val |= LP8788_BL_EN | LP8788_BL_PWM_EN | + (cfg->pwm_pol << LP8788_BL_PWM_POLARITY_S); + break; + default: + dev_err(bl->lp->dev, "invalid mode: %d\n", cfg->bl_mode); + return -EINVAL; + } + + bl->mode = cfg->bl_mode; + + return lp8788_write_byte(bl->lp, LP8788_BL_CONFIG, val); + +no_err: + return 0; +} + +static void lp8788_pwm_ctrl(struct lp8788_bl *bl, int br, int max_br) +{ + unsigned int period; + unsigned int duty; + struct device *dev; + struct pwm_device *pwm; + + if (!bl->pdata) + return; + + period = bl->pdata->period_ns; + duty = br * period / max_br; + dev = bl->lp->dev; + + /* request pwm device with the consumer name */ + if (!bl->pwm) { + pwm = devm_pwm_get(dev, LP8788_DEV_BACKLIGHT); + if (IS_ERR(pwm)) { + dev_err(dev, "can not get pwm device\n"); + return; + } + + bl->pwm = pwm; + } + + pwm_config(bl->pwm, duty, period); + if (duty) + pwm_enable(bl->pwm); + else + pwm_disable(bl->pwm); +} + +static int lp8788_bl_update_status(struct backlight_device *bl_dev) +{ + struct lp8788_bl *bl = bl_get_data(bl_dev); + enum lp8788_bl_ctrl_mode mode = bl->mode; + + if (bl_dev->props.state & BL_CORE_SUSPENDED) + bl_dev->props.brightness = 0; + + if (is_brightness_ctrl_by_pwm(mode)) { + int brt = bl_dev->props.brightness; + int max = bl_dev->props.max_brightness; + + lp8788_pwm_ctrl(bl, brt, max); + } else if (is_brightness_ctrl_by_register(mode)) { + u8 brt = bl_dev->props.brightness; + + lp8788_write_byte(bl->lp, LP8788_BL_BRIGHTNESS, brt); + } + + return 0; +} + +static int lp8788_bl_get_brightness(struct backlight_device *bl_dev) +{ + struct lp8788_bl *bl = bl_get_data(bl_dev); + enum lp8788_bl_ctrl_mode mode = bl->mode; + + if (is_brightness_ctrl_by_register(mode)) { + u8 val = 0; + + lp8788_read_byte(bl->lp, LP8788_BL_BRIGHTNESS, &val); + bl_dev->props.brightness = val; + } + + return bl_dev->props.brightness; +} + +static const struct backlight_ops lp8788_bl_ops = { + .options = BL_CORE_SUSPENDRESUME, + .update_status = lp8788_bl_update_status, + .get_brightness = lp8788_bl_get_brightness, +}; + +static int lp8788_backlight_register(struct lp8788_bl *bl) +{ + struct backlight_device *bl_dev; + struct backlight_properties props; + struct lp8788_backlight_platform_data *pdata = bl->pdata; + int init_brt; + char *name; + + props.type = BACKLIGHT_PLATFORM; + props.max_brightness = MAX_BRIGHTNESS; + + /* initial brightness */ + if (pdata) + init_brt = min_t(int, pdata->initial_brightness, + props.max_brightness); + else + init_brt = 0; + + props.brightness = init_brt; + + /* backlight device name */ + if (!pdata || !pdata->name) + name = DEFAULT_BL_NAME; + else + name = pdata->name; + + bl_dev = backlight_device_register(name, bl->lp->dev, bl, + &lp8788_bl_ops, &props); + if (IS_ERR(bl_dev)) + return PTR_ERR(bl_dev); + + bl->bl_dev = bl_dev; + + return 0; +} + +static void lp8788_backlight_unregister(struct lp8788_bl *bl) +{ + struct backlight_device *bl_dev = bl->bl_dev; + + if (bl_dev) + backlight_device_unregister(bl_dev); +} + +static ssize_t lp8788_get_bl_ctl_mode(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct lp8788_bl *bl = dev_get_drvdata(dev); + enum lp8788_bl_ctrl_mode mode = bl->mode; + char *strmode; + + if (is_brightness_ctrl_by_pwm(mode)) + strmode = "pwm based"; + else if (is_brightness_ctrl_by_register(mode)) + strmode = "register based"; + else + strmode = "invalid mode"; + + return scnprintf(buf, BUF_SIZE, "%s\n", strmode); +} + +static DEVICE_ATTR(bl_ctl_mode, S_IRUGO, lp8788_get_bl_ctl_mode, NULL); + +static struct attribute *lp8788_attributes[] = { + &dev_attr_bl_ctl_mode.attr, + NULL, +}; + +static const struct attribute_group lp8788_attr_group = { + .attrs = lp8788_attributes, +}; + +static int lp8788_backlight_probe(struct platform_device *pdev) +{ + struct lp8788 *lp = dev_get_drvdata(pdev->dev.parent); + struct lp8788_bl *bl; + int ret; + + bl = devm_kzalloc(lp->dev, sizeof(struct lp8788_bl), GFP_KERNEL); + if (!bl) + return -ENOMEM; + + bl->lp = lp; + if (lp->pdata) + bl->pdata = lp->pdata->bl_pdata; + + platform_set_drvdata(pdev, bl); + + ret = lp8788_backlight_configure(bl); + if (ret) { + dev_err(lp->dev, "backlight config err: %d\n", ret); + goto err_dev; + } + + ret = lp8788_backlight_register(bl); + if (ret) { + dev_err(lp->dev, "register backlight err: %d\n", ret); + goto err_dev; + } + + ret = sysfs_create_group(&pdev->dev.kobj, &lp8788_attr_group); + if (ret) { + dev_err(lp->dev, "register sysfs err: %d\n", ret); + goto err_sysfs; + } + + backlight_update_status(bl->bl_dev); + + return 0; + +err_sysfs: + lp8788_backlight_unregister(bl); +err_dev: + return ret; +} + +static int lp8788_backlight_remove(struct platform_device *pdev) +{ + struct lp8788_bl *bl = platform_get_drvdata(pdev); + struct backlight_device *bl_dev = bl->bl_dev; + + bl_dev->props.brightness = 0; + backlight_update_status(bl_dev); + sysfs_remove_group(&pdev->dev.kobj, &lp8788_attr_group); + lp8788_backlight_unregister(bl); + platform_set_drvdata(pdev, NULL); + + return 0; +} + +static struct platform_driver lp8788_bl_driver = { + .probe = lp8788_backlight_probe, + .remove = lp8788_backlight_remove, + .driver = { + .name = LP8788_DEV_BACKLIGHT, + .owner = THIS_MODULE, + }, +}; +module_platform_driver(lp8788_bl_driver); + +MODULE_DESCRIPTION("Texas Instruments LP8788 Backlight Driver"); +MODULE_AUTHOR("Milo Kim"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:lp8788-backlight"); diff --git a/drivers/video/backlight/ltv350qv.c b/drivers/video/backlight/ltv350qv.c index 226d813edf01..c0b4b8f2de98 100644 --- a/drivers/video/backlight/ltv350qv.c +++ b/drivers/video/backlight/ltv350qv.c @@ -252,7 +252,7 @@ static int ltv350qv_probe(struct spi_device *spi) if (ret) goto out_unregister; - dev_set_drvdata(&spi->dev, lcd); + spi_set_drvdata(spi, lcd); return 0; @@ -263,7 +263,7 @@ out_unregister: static int ltv350qv_remove(struct spi_device *spi) { - struct ltv350qv *lcd = dev_get_drvdata(&spi->dev); + struct ltv350qv *lcd = spi_get_drvdata(spi); ltv350qv_power(lcd, FB_BLANK_POWERDOWN); lcd_device_unregister(lcd->ld); @@ -274,14 +274,14 @@ static int ltv350qv_remove(struct spi_device *spi) #ifdef CONFIG_PM static int ltv350qv_suspend(struct spi_device *spi, pm_message_t state) { - struct ltv350qv *lcd = dev_get_drvdata(&spi->dev); + struct ltv350qv *lcd = spi_get_drvdata(spi); return ltv350qv_power(lcd, FB_BLANK_POWERDOWN); } static int ltv350qv_resume(struct spi_device *spi) { - struct ltv350qv *lcd = dev_get_drvdata(&spi->dev); + struct ltv350qv *lcd = spi_get_drvdata(spi); return ltv350qv_power(lcd, FB_BLANK_UNBLANK); } @@ -293,7 +293,7 @@ static int ltv350qv_resume(struct spi_device *spi) /* Power down all displays on reboot, poweroff or halt */ static void ltv350qv_shutdown(struct spi_device *spi) { - struct ltv350qv *lcd = dev_get_drvdata(&spi->dev); + struct ltv350qv *lcd = spi_get_drvdata(spi); ltv350qv_power(lcd, FB_BLANK_POWERDOWN); } diff --git a/drivers/video/backlight/omap1_bl.c b/drivers/video/backlight/omap1_bl.c index af31c269baa6..627110163067 100644 --- a/drivers/video/backlight/omap1_bl.c +++ b/drivers/video/backlight/omap1_bl.c @@ -77,7 +77,7 @@ static void omapbl_blank(struct omap_backlight *bl, int mode) static int omapbl_suspend(struct platform_device *pdev, pm_message_t state) { struct backlight_device *dev = platform_get_drvdata(pdev); - struct omap_backlight *bl = dev_get_drvdata(&dev->dev); + struct omap_backlight *bl = bl_get_data(dev); omapbl_blank(bl, FB_BLANK_POWERDOWN); return 0; @@ -86,7 +86,7 @@ static int omapbl_suspend(struct platform_device *pdev, pm_message_t state) static int omapbl_resume(struct platform_device *pdev) { struct backlight_device *dev = platform_get_drvdata(pdev); - struct omap_backlight *bl = dev_get_drvdata(&dev->dev); + struct omap_backlight *bl = bl_get_data(dev); omapbl_blank(bl, bl->powermode); return 0; @@ -98,7 +98,7 @@ static int omapbl_resume(struct platform_device *pdev) static int omapbl_set_power(struct backlight_device *dev, int state) { - struct omap_backlight *bl = dev_get_drvdata(&dev->dev); + struct omap_backlight *bl = bl_get_data(dev); omapbl_blank(bl, state); bl->powermode = state; @@ -108,7 +108,7 @@ static int omapbl_set_power(struct backlight_device *dev, int state) static int omapbl_update_status(struct backlight_device *dev) { - struct omap_backlight *bl = dev_get_drvdata(&dev->dev); + struct omap_backlight *bl = bl_get_data(dev); if (bl->current_intensity != dev->props.brightness) { if (bl->powermode == FB_BLANK_UNBLANK) @@ -124,7 +124,7 @@ static int omapbl_update_status(struct backlight_device *dev) static int omapbl_get_intensity(struct backlight_device *dev) { - struct omap_backlight *bl = dev_get_drvdata(&dev->dev); + struct omap_backlight *bl = bl_get_data(dev); return bl->current_intensity; } diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c index a71ef4a79ec4..fa00304a63d8 100644 --- a/drivers/video/backlight/pwm_bl.c +++ b/drivers/video/backlight/pwm_bl.c @@ -37,7 +37,7 @@ struct pwm_bl_data { static int pwm_backlight_update_status(struct backlight_device *bl) { - struct pwm_bl_data *pb = dev_get_drvdata(&bl->dev); + struct pwm_bl_data *pb = bl_get_data(bl); int brightness = bl->props.brightness; int max = bl->props.max_brightness; @@ -82,7 +82,7 @@ static int pwm_backlight_get_brightness(struct backlight_device *bl) static int pwm_backlight_check_fb(struct backlight_device *bl, struct fb_info *info) { - struct pwm_bl_data *pb = dev_get_drvdata(&bl->dev); + struct pwm_bl_data *pb = bl_get_data(bl); return !pb->check_fb || pb->check_fb(pb->dev, info); } @@ -264,7 +264,7 @@ err_alloc: static int pwm_backlight_remove(struct platform_device *pdev) { struct backlight_device *bl = platform_get_drvdata(pdev); - struct pwm_bl_data *pb = dev_get_drvdata(&bl->dev); + struct pwm_bl_data *pb = bl_get_data(bl); backlight_device_unregister(bl); pwm_config(pb->pwm, 0, pb->period); @@ -278,7 +278,7 @@ static int pwm_backlight_remove(struct platform_device *pdev) static int pwm_backlight_suspend(struct device *dev) { struct backlight_device *bl = dev_get_drvdata(dev); - struct pwm_bl_data *pb = dev_get_drvdata(&bl->dev); + struct pwm_bl_data *pb = bl_get_data(bl); if (pb->notify) pb->notify(pb->dev, 0); diff --git a/drivers/video/backlight/s6e63m0.c b/drivers/video/backlight/s6e63m0.c index 3e1c1135f6df..9c2677f0ef7d 100644 --- a/drivers/video/backlight/s6e63m0.c +++ b/drivers/video/backlight/s6e63m0.c @@ -9,28 +9,19 @@ * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -#include <linux/wait.h> -#include <linux/fb.h> +#include <linux/backlight.h> #include <linux/delay.h> +#include <linux/fb.h> #include <linux/gpio.h> -#include <linux/spi/spi.h> -#include <linux/irq.h> #include <linux/interrupt.h> +#include <linux/irq.h> #include <linux/kernel.h> #include <linux/lcd.h> -#include <linux/backlight.h> #include <linux/module.h> +#include <linux/spi/spi.h> +#include <linux/wait.h> #include "s6e63m0_gamma.h" @@ -43,8 +34,6 @@ #define MIN_BRIGHTNESS 0 #define MAX_BRIGHTNESS 10 -#define POWER_IS_ON(pwr) ((pwr) <= FB_BLANK_NORMAL) - struct s6e63m0 { struct device *dev; struct spi_device *spi; @@ -57,7 +46,7 @@ struct s6e63m0 { struct lcd_platform_data *lcd_pd; }; -static const unsigned short SEQ_PANEL_CONDITION_SET[] = { +static const unsigned short seq_panel_condition_set[] = { 0xF8, 0x01, DATA_ONLY, 0x27, DATA_ONLY, 0x27, @@ -76,7 +65,7 @@ static const unsigned short SEQ_PANEL_CONDITION_SET[] = { ENDDEF, 0x0000 }; -static const unsigned short SEQ_DISPLAY_CONDITION_SET[] = { +static const unsigned short seq_display_condition_set[] = { 0xf2, 0x02, DATA_ONLY, 0x03, DATA_ONLY, 0x1c, @@ -90,7 +79,7 @@ static const unsigned short SEQ_DISPLAY_CONDITION_SET[] = { ENDDEF, 0x0000 }; -static const unsigned short SEQ_GAMMA_SETTING[] = { +static const unsigned short seq_gamma_setting[] = { 0xfa, 0x00, DATA_ONLY, 0x18, DATA_ONLY, 0x08, @@ -119,7 +108,7 @@ static const unsigned short SEQ_GAMMA_SETTING[] = { ENDDEF, 0x0000 }; -static const unsigned short SEQ_ETC_CONDITION_SET[] = { +static const unsigned short seq_etc_condition_set[] = { 0xf6, 0x00, DATA_ONLY, 0x8c, DATA_ONLY, 0x07, @@ -318,47 +307,47 @@ static const unsigned short SEQ_ETC_CONDITION_SET[] = { ENDDEF, 0x0000 }; -static const unsigned short SEQ_ACL_ON[] = { +static const unsigned short seq_acl_on[] = { /* ACL on */ 0xc0, 0x01, ENDDEF, 0x0000 }; -static const unsigned short SEQ_ACL_OFF[] = { +static const unsigned short seq_acl_off[] = { /* ACL off */ 0xc0, 0x00, ENDDEF, 0x0000 }; -static const unsigned short SEQ_ELVSS_ON[] = { +static const unsigned short seq_elvss_on[] = { /* ELVSS on */ 0xb1, 0x0b, ENDDEF, 0x0000 }; -static const unsigned short SEQ_ELVSS_OFF[] = { +static const unsigned short seq_elvss_off[] = { /* ELVSS off */ 0xb1, 0x0a, ENDDEF, 0x0000 }; -static const unsigned short SEQ_STAND_BY_OFF[] = { +static const unsigned short seq_stand_by_off[] = { 0x11, COMMAND_ONLY, ENDDEF, 0x0000 }; -static const unsigned short SEQ_STAND_BY_ON[] = { +static const unsigned short seq_stand_by_on[] = { 0x10, COMMAND_ONLY, ENDDEF, 0x0000 }; -static const unsigned short SEQ_DISPLAY_ON[] = { +static const unsigned short seq_display_on[] = { 0x29, COMMAND_ONLY, ENDDEF, 0x0000 @@ -406,8 +395,9 @@ static int s6e63m0_panel_send_sequence(struct s6e63m0 *lcd, ret = s6e63m0_spi_write(lcd, wbuf[i], wbuf[i+1]); if (ret) break; - } else - udelay(wbuf[i+1]*1000); + } else { + msleep(wbuf[i+1]); + } i += 2; } @@ -457,12 +447,12 @@ static int s6e63m0_ldi_init(struct s6e63m0 *lcd) { int ret, i; const unsigned short *init_seq[] = { - SEQ_PANEL_CONDITION_SET, - SEQ_DISPLAY_CONDITION_SET, - SEQ_GAMMA_SETTING, - SEQ_ETC_CONDITION_SET, - SEQ_ACL_ON, - SEQ_ELVSS_ON, + seq_panel_condition_set, + seq_display_condition_set, + seq_gamma_setting, + seq_etc_condition_set, + seq_acl_on, + seq_elvss_on, }; for (i = 0; i < ARRAY_SIZE(init_seq); i++) { @@ -478,8 +468,8 @@ static int s6e63m0_ldi_enable(struct s6e63m0 *lcd) { int ret = 0, i; const unsigned short *enable_seq[] = { - SEQ_STAND_BY_OFF, - SEQ_DISPLAY_ON, + seq_stand_by_off, + seq_display_on, }; for (i = 0; i < ARRAY_SIZE(enable_seq); i++) { @@ -495,43 +485,39 @@ static int s6e63m0_ldi_disable(struct s6e63m0 *lcd) { int ret; - ret = s6e63m0_panel_send_sequence(lcd, SEQ_STAND_BY_ON); + ret = s6e63m0_panel_send_sequence(lcd, seq_stand_by_on); return ret; } +static int s6e63m0_power_is_on(int power) +{ + return power <= FB_BLANK_NORMAL; +} + static int s6e63m0_power_on(struct s6e63m0 *lcd) { int ret = 0; - struct lcd_platform_data *pd = NULL; - struct backlight_device *bd = NULL; + struct lcd_platform_data *pd; + struct backlight_device *bd; pd = lcd->lcd_pd; - if (!pd) { - dev_err(lcd->dev, "platform data is NULL.\n"); - return -EFAULT; - } - bd = lcd->bd; - if (!bd) { - dev_err(lcd->dev, "backlight device is NULL.\n"); - return -EFAULT; - } if (!pd->power_on) { dev_err(lcd->dev, "power_on is NULL.\n"); - return -EFAULT; + return -EINVAL; } else { pd->power_on(lcd->ld, 1); - mdelay(pd->power_on_delay); + msleep(pd->power_on_delay); } if (!pd->reset) { dev_err(lcd->dev, "reset is NULL.\n"); - return -EFAULT; + return -EINVAL; } else { pd->reset(lcd->ld); - mdelay(pd->reset_delay); + msleep(pd->reset_delay); } ret = s6e63m0_ldi_init(lcd); @@ -558,14 +544,10 @@ static int s6e63m0_power_on(struct s6e63m0 *lcd) static int s6e63m0_power_off(struct s6e63m0 *lcd) { - int ret = 0; - struct lcd_platform_data *pd = NULL; + int ret; + struct lcd_platform_data *pd; pd = lcd->lcd_pd; - if (!pd) { - dev_err(lcd->dev, "platform data is NULL.\n"); - return -EFAULT; - } ret = s6e63m0_ldi_disable(lcd); if (ret) { @@ -573,13 +555,9 @@ static int s6e63m0_power_off(struct s6e63m0 *lcd) return -EIO; } - mdelay(pd->power_off_delay); + msleep(pd->power_off_delay); - if (!pd->power_on) { - dev_err(lcd->dev, "power_on is NULL.\n"); - return -EFAULT; - } else - pd->power_on(lcd->ld, 0); + pd->power_on(lcd->ld, 0); return 0; } @@ -588,9 +566,9 @@ static int s6e63m0_power(struct s6e63m0 *lcd, int power) { int ret = 0; - if (POWER_IS_ON(power) && !POWER_IS_ON(lcd->power)) + if (s6e63m0_power_is_on(power) && !s6e63m0_power_is_on(lcd->power)) ret = s6e63m0_power_on(lcd); - else if (!POWER_IS_ON(power) && POWER_IS_ON(lcd->power)) + else if (!s6e63m0_power_is_on(power) && s6e63m0_power_is_on(lcd->power)) ret = s6e63m0_power_off(lcd); if (!ret) @@ -760,7 +738,7 @@ static int s6e63m0_probe(struct spi_device *spi) lcd->lcd_pd = spi->dev.platform_data; if (!lcd->lcd_pd) { dev_err(&spi->dev, "platform data is NULL.\n"); - return -EFAULT; + return -EINVAL; } ld = lcd_device_register("s6e63m0", &spi->dev, lcd, &s6e63m0_lcd_ops); @@ -788,7 +766,7 @@ static int s6e63m0_probe(struct spi_device *spi) * know that. */ lcd->gamma_table_count = - sizeof(gamma_table) / (MAX_GAMMA_LEVEL * sizeof(int)); + sizeof(gamma_table) / (MAX_GAMMA_LEVEL * sizeof(int *)); ret = device_create_file(&(spi->dev), &dev_attr_gamma_mode); if (ret < 0) @@ -811,10 +789,11 @@ static int s6e63m0_probe(struct spi_device *spi) lcd->power = FB_BLANK_POWERDOWN; s6e63m0_power(lcd, FB_BLANK_UNBLANK); - } else + } else { lcd->power = FB_BLANK_UNBLANK; + } - dev_set_drvdata(&spi->dev, lcd); + spi_set_drvdata(spi, lcd); dev_info(&spi->dev, "s6e63m0 panel driver has been probed.\n"); @@ -827,7 +806,7 @@ out_lcd_unregister: static int s6e63m0_remove(struct spi_device *spi) { - struct s6e63m0 *lcd = dev_get_drvdata(&spi->dev); + struct s6e63m0 *lcd = spi_get_drvdata(spi); s6e63m0_power(lcd, FB_BLANK_POWERDOWN); device_remove_file(&spi->dev, &dev_attr_gamma_table); @@ -839,44 +818,26 @@ static int s6e63m0_remove(struct spi_device *spi) } #if defined(CONFIG_PM) -static unsigned int before_power; - static int s6e63m0_suspend(struct spi_device *spi, pm_message_t mesg) { - int ret = 0; - struct s6e63m0 *lcd = dev_get_drvdata(&spi->dev); + struct s6e63m0 *lcd = spi_get_drvdata(spi); dev_dbg(&spi->dev, "lcd->power = %d\n", lcd->power); - before_power = lcd->power; - /* * when lcd panel is suspend, lcd panel becomes off * regardless of status. */ - ret = s6e63m0_power(lcd, FB_BLANK_POWERDOWN); - - return ret; + return s6e63m0_power(lcd, FB_BLANK_POWERDOWN); } static int s6e63m0_resume(struct spi_device *spi) { - int ret = 0; - struct s6e63m0 *lcd = dev_get_drvdata(&spi->dev); - - /* - * after suspended, if lcd panel status is FB_BLANK_UNBLANK - * (at that time, before_power is FB_BLANK_UNBLANK) then - * it changes that status to FB_BLANK_POWERDOWN to get lcd on. - */ - if (before_power == FB_BLANK_UNBLANK) - lcd->power = FB_BLANK_POWERDOWN; + struct s6e63m0 *lcd = spi_get_drvdata(spi); - dev_dbg(&spi->dev, "before_power = %d\n", before_power); + lcd->power = FB_BLANK_POWERDOWN; - ret = s6e63m0_power(lcd, before_power); - - return ret; + return s6e63m0_power(lcd, FB_BLANK_UNBLANK); } #else #define s6e63m0_suspend NULL @@ -886,7 +847,7 @@ static int s6e63m0_resume(struct spi_device *spi) /* Power down all displays on reboot, poweroff or halt. */ static void s6e63m0_shutdown(struct spi_device *spi) { - struct s6e63m0 *lcd = dev_get_drvdata(&spi->dev); + struct s6e63m0 *lcd = spi_get_drvdata(spi); s6e63m0_power(lcd, FB_BLANK_POWERDOWN); } diff --git a/drivers/video/backlight/tdo24m.c b/drivers/video/backlight/tdo24m.c index ad2325f3d652..00162085eec0 100644 --- a/drivers/video/backlight/tdo24m.c +++ b/drivers/video/backlight/tdo24m.c @@ -390,7 +390,7 @@ static int tdo24m_probe(struct spi_device *spi) if (IS_ERR(lcd->lcd_dev)) return PTR_ERR(lcd->lcd_dev); - dev_set_drvdata(&spi->dev, lcd); + spi_set_drvdata(spi, lcd); err = tdo24m_power(lcd, FB_BLANK_UNBLANK); if (err) goto out_unregister; @@ -404,7 +404,7 @@ out_unregister: static int tdo24m_remove(struct spi_device *spi) { - struct tdo24m *lcd = dev_get_drvdata(&spi->dev); + struct tdo24m *lcd = spi_get_drvdata(spi); tdo24m_power(lcd, FB_BLANK_POWERDOWN); lcd_device_unregister(lcd->lcd_dev); @@ -415,14 +415,14 @@ static int tdo24m_remove(struct spi_device *spi) #ifdef CONFIG_PM static int tdo24m_suspend(struct spi_device *spi, pm_message_t state) { - struct tdo24m *lcd = dev_get_drvdata(&spi->dev); + struct tdo24m *lcd = spi_get_drvdata(spi); return tdo24m_power(lcd, FB_BLANK_POWERDOWN); } static int tdo24m_resume(struct spi_device *spi) { - struct tdo24m *lcd = dev_get_drvdata(&spi->dev); + struct tdo24m *lcd = spi_get_drvdata(spi); return tdo24m_power(lcd, FB_BLANK_UNBLANK); } @@ -434,7 +434,7 @@ static int tdo24m_resume(struct spi_device *spi) /* Power down all displays on reboot, poweroff or halt */ static void tdo24m_shutdown(struct spi_device *spi) { - struct tdo24m *lcd = dev_get_drvdata(&spi->dev); + struct tdo24m *lcd = spi_get_drvdata(spi); tdo24m_power(lcd, FB_BLANK_POWERDOWN); } diff --git a/drivers/video/backlight/tosa_bl.c b/drivers/video/backlight/tosa_bl.c index 588682cc1614..2326fa810c59 100644 --- a/drivers/video/backlight/tosa_bl.c +++ b/drivers/video/backlight/tosa_bl.c @@ -54,7 +54,7 @@ static void tosa_bl_set_backlight(struct tosa_bl_data *data, int brightness) static int tosa_bl_update_status(struct backlight_device *dev) { struct backlight_properties *props = &dev->props; - struct tosa_bl_data *data = dev_get_drvdata(&dev->dev); + struct tosa_bl_data *data = bl_get_data(dev); int power = max(props->power, props->fb_blank); int brightness = props->brightness; diff --git a/drivers/video/backlight/tosa_lcd.c b/drivers/video/backlight/tosa_lcd.c index 96bae941585a..666fe2593ea4 100644 --- a/drivers/video/backlight/tosa_lcd.c +++ b/drivers/video/backlight/tosa_lcd.c @@ -193,7 +193,7 @@ static int tosa_lcd_probe(struct spi_device *spi) return ret; data->spi = spi; - dev_set_drvdata(&spi->dev, data); + spi_set_drvdata(spi, data); ret = devm_gpio_request_one(&spi->dev, TOSA_GPIO_TG_ON, GPIOF_OUT_INIT_LOW, "tg #pwr"); @@ -220,13 +220,13 @@ static int tosa_lcd_probe(struct spi_device *spi) err_register: tosa_lcd_tg_off(data); err_gpio_tg: - dev_set_drvdata(&spi->dev, NULL); + spi_set_drvdata(spi, NULL); return ret; } static int tosa_lcd_remove(struct spi_device *spi) { - struct tosa_lcd_data *data = dev_get_drvdata(&spi->dev); + struct tosa_lcd_data *data = spi_get_drvdata(spi); lcd_device_unregister(data->lcd); @@ -235,7 +235,7 @@ static int tosa_lcd_remove(struct spi_device *spi) tosa_lcd_tg_off(data); - dev_set_drvdata(&spi->dev, NULL); + spi_set_drvdata(spi, NULL); return 0; } @@ -243,7 +243,7 @@ static int tosa_lcd_remove(struct spi_device *spi) #ifdef CONFIG_PM static int tosa_lcd_suspend(struct spi_device *spi, pm_message_t state) { - struct tosa_lcd_data *data = dev_get_drvdata(&spi->dev); + struct tosa_lcd_data *data = spi_get_drvdata(spi); tosa_lcd_tg_off(data); @@ -252,7 +252,7 @@ static int tosa_lcd_suspend(struct spi_device *spi, pm_message_t state) static int tosa_lcd_resume(struct spi_device *spi) { - struct tosa_lcd_data *data = dev_get_drvdata(&spi->dev); + struct tosa_lcd_data *data = spi_get_drvdata(spi); tosa_lcd_tg_init(data); if (POWER_IS_ON(data->lcd_power)) diff --git a/drivers/video/backlight/vgg2432a4.c b/drivers/video/backlight/vgg2432a4.c index 45e81b4cf8b4..84d582f591dc 100644 --- a/drivers/video/backlight/vgg2432a4.c +++ b/drivers/video/backlight/vgg2432a4.c @@ -208,12 +208,11 @@ static int vgg2432a4_lcd_init(struct ili9320 *lcd, #ifdef CONFIG_PM static int vgg2432a4_suspend(struct spi_device *spi, pm_message_t state) { - return ili9320_suspend(dev_get_drvdata(&spi->dev), state); + return ili9320_suspend(spi_get_drvdata(spi), state); } - static int vgg2432a4_resume(struct spi_device *spi) { - return ili9320_resume(dev_get_drvdata(&spi->dev)); + return ili9320_resume(spi_get_drvdata(spi)); } #else #define vgg2432a4_suspend NULL @@ -242,12 +241,12 @@ static int vgg2432a4_probe(struct spi_device *spi) static int vgg2432a4_remove(struct spi_device *spi) { - return ili9320_remove(dev_get_drvdata(&spi->dev)); + return ili9320_remove(spi_get_drvdata(spi)); } static void vgg2432a4_shutdown(struct spi_device *spi) { - ili9320_shutdown(dev_get_drvdata(&spi->dev)); + ili9320_shutdown(spi_get_drvdata(spi)); } static struct spi_driver vgg2432a4_driver = { |