Merge branch 'for-linus' of git://git.o-hand.com/linux-rpurdie-backlight

* 'for-linus' of git://git.o-hand.com/linux-rpurdie-backlight:
  gta02: Use pcf50633 backlight driver instead of platform backlight driver.
  backlight: pcf50633: Register a pcf50633-backlight device in pcf50633 core driver.
  backlight: Add pcf50633 backlight driver
  backlight: 88pm860x_bl: fix error handling in pm860x_backlight_probe
  backlight: max8925_bl: Fix error handling path
  backlight: l4f00242t03: fix error handling in l4f00242t03_probe
  backlight: add S6E63M0 AMOLED LCD Panel driver
  backlight: adp8860: add support for ADP8861 & ADP8863
  backlight: mbp_nvidia_bl - Fix DMI_SYS_VENDOR for MacBook1,1
  backlight: Add Cirrus EP93xx backlight driver
  backlight: l4f00242t03: Fix regulators handling code in remove function
  backlight: fix adp8860_bl build errors
  backlight: new driver for the ADP8860 backlight parts
  backlight: 88pm860x_bl - potential memory leak
  backlight: mbp_nvidia_bl - add support for older MacBookPro and MacBook 6,1.
  backlight: Kconfig cleanup
  backlight: backlight_device_register() return ERR_PTR()

arch/arm/mach-s3c2440/mach-gta02.c

@@ -49,7 +49,6 @@
 #include <linux/io.h>
 
 #include <linux/i2c.h>
-#include <linux/backlight.h>
 #include <linux/regulator/machine.h>
 
 #include <linux/mfd/pcf50633/core.h>
@@ -57,6 +56,7 @@
 #include <linux/mfd/pcf50633/adc.h>
 #include <linux/mfd/pcf50633/gpio.h>
 #include <linux/mfd/pcf50633/pmic.h>
+#include <linux/mfd/pcf50633/backlight.h>
 
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
@@ -254,6 +254,12 @@ static char *gta02_batteries[] = {
 	"battery",
 };
 
+static struct pcf50633_bl_platform_data gta02_backlight_data = {
+	.default_brightness = 0x3f,
+	.default_brightness_limit = 0,
+	.ramp_time = 5,
+};
+
 struct pcf50633_platform_data gta02_pcf_pdata = {
 	.resumers = {
 		[0] =	PCF50633_INT1_USBINS |
@@ -271,6 +277,8 @@ struct pcf50633_platform_data gta02_pcf_pdata = {
 
 	.charger_reference_current_ma = 1000,
 
+	.backlight_data = &gta02_backlight_data,
+
 	.reg_init_data = {
 		[PCF50633_REGULATOR_AUTO] = {
 			.constraints = {
@@ -478,71 +486,6 @@ static struct s3c2410_udc_mach_info gta02_udc_cfg = {
 
 };
 
-
-
-static void gta02_bl_set_intensity(int intensity)
-{
-	struct pcf50633 *pcf = gta02_pcf;
-	int old_intensity = pcf50633_reg_read(pcf, PCF50633_REG_LEDOUT);
-
-	/* We map 8-bit intensity to 6-bit intensity in hardware. */
-	intensity >>= 2;
-
-	/*
-	 * This can happen during, eg, print of panic on blanked console,
-	 * but we can't service i2c without interrupts active, so abort.
-	 */
-	if (in_atomic()) {
-		printk(KERN_ERR "gta02_bl_set_intensity called while atomic\n");
-		return;
-	}
-
-	old_intensity = pcf50633_reg_read(pcf, PCF50633_REG_LEDOUT);
-	if (intensity == old_intensity)
-		return;
-
-	/* We can't do this anywhere else. */
-	pcf50633_reg_write(pcf, PCF50633_REG_LEDDIM, 5);
-
-	if (!(pcf50633_reg_read(pcf, PCF50633_REG_LEDENA) & 3))
-		old_intensity = 0;
-
-	/*
-	 * The PCF50633 cannot handle LEDOUT = 0 (datasheet p60)
-	 * if seen, you have to re-enable the LED unit.
-	 */
-	if (!intensity || !old_intensity)
-		pcf50633_reg_write(pcf, PCF50633_REG_LEDENA, 0);
-
-	/* Illegal to set LEDOUT to 0. */
-	if (!intensity)
-		pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_LEDOUT, 0x3f, 2);
-	else
-		pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_LEDOUT, 0x3f,
-					  intensity);
-
-	if (intensity)
-		pcf50633_reg_write(pcf, PCF50633_REG_LEDENA, 2);
-
-}
-
-static struct generic_bl_info gta02_bl_info = {
-	.name			= "gta02-bl",
-	.max_intensity		= 0xff,
-	.default_intensity	= 0xff,
-	.set_bl_intensity	= gta02_bl_set_intensity,
-};
-
-static struct platform_device gta02_bl_dev = {
-	.name			= "generic-bl",
-	.id			= 1,
-	.dev = {
-		.platform_data = &gta02_bl_info,
-	},
-};
-
-
-
 /* USB */
 static struct s3c2410_hcd_info gta02_usb_info __initdata = {
 	.port[0]	= {
@@ -579,7 +522,6 @@ static struct platform_device *gta02_devices[] __initdata = {
 /* These guys DO need to be children of PMU. */
 
 static struct platform_device *gta02_devices_pmu_children[] = {
-	&gta02_bl_dev,
 };
 
 

drivers/mfd/pcf50633-core.c

@@ -620,6 +620,9 @@ static int __devinit pcf50633_probe(struct i2c_client *client,
 						&pcf->mbc_pdev);
 	pcf50633_client_dev_register(pcf, "pcf50633-adc",
 						&pcf->adc_pdev);
+	pcf50633_client_dev_register(pcf, "pcf50633-backlight",
+						&pcf->bl_pdev);
+
 
 	for (i = 0; i < PCF50633_NUM_REGULATORS; i++) {
 		struct platform_device *pdev;

drivers/video/backlight/88pm860x_bl.c

@@ -222,6 +222,7 @@ static int pm860x_backlight_probe(struct platform_device *pdev)
 	data->port = __check_device(pdata, name);
 	if (data->port < 0) {
 		dev_err(&pdev->dev, "wrong platform data is assigned");
+		kfree(data);
 		return -EINVAL;
 	}
 
@@ -266,6 +267,7 @@ static int pm860x_backlight_probe(struct platform_device *pdev)
 	backlight_update_status(bl);
 	return 0;
 out:
+	backlight_device_unregister(bl);
 	kfree(data);
 	return ret;
 }

drivers/video/backlight/Makefile

@@ -11,9 +11,11 @@ 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-$(CONFIG_BACKLIGHT_CLASS_DEVICE) += backlight.o
 obj-$(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
@@ -30,5 +32,7 @@ obj-$(CONFIG_BACKLIGHT_SAHARA)	+= kb3886_bl.o
 obj-$(CONFIG_BACKLIGHT_WM831X)	+= wm831x_bl.o
 obj-$(CONFIG_BACKLIGHT_ADX)    += adx_bl.o
 obj-$(CONFIG_BACKLIGHT_ADP5520)	+= adp5520_bl.o
+obj-$(CONFIG_BACKLIGHT_ADP8860)	+= adp8860_bl.o
 obj-$(CONFIG_BACKLIGHT_88PM860X) += 88pm860x_bl.o
+obj-$(CONFIG_BACKLIGHT_PCF50633)	+= pcf50633-backlight.o
 

drivers/video/backlight/adx_bl.c

@@ -107,8 +107,8 @@ static int __devinit adx_backlight_probe(struct platform_device *pdev)
 	props.max_brightness = 0xff;
 	bldev = backlight_device_register(dev_name(&pdev->dev), &pdev->dev,
 					  bl, &adx_backlight_ops, &props);
-	if (!bldev) {
-		ret = -ENOMEM;
+	if (IS_ERR(bldev)) {
+		ret = PTR_ERR(bldev);
 		goto out;
 	}
 

drivers/video/backlight/ep93xx_bl.c

+/*
+ * Driver for the Cirrus EP93xx lcd backlight
+ *
+ * Copyright (c) 2010 H Hartley Sweeten <hsweeten@visionengravers.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.
+ *
+ * This driver controls the pulse width modulated brightness control output,
+ * BRIGHT, on the Cirrus EP9307, EP9312, and EP9315 processors.
+ */
+
+
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/fb.h>
+#include <linux/backlight.h>
+
+#include <mach/hardware.h>
+
+#define EP93XX_RASTER_REG(x)		(EP93XX_RASTER_BASE + (x))
+#define EP93XX_RASTER_BRIGHTNESS	EP93XX_RASTER_REG(0x20)
+
+#define EP93XX_MAX_COUNT		255
+#define EP93XX_MAX_BRIGHT		255
+#define EP93XX_DEF_BRIGHT		128
+
+struct ep93xxbl {
+	void __iomem *mmio;
+	int brightness;
+};
+
+static int ep93xxbl_set(struct backlight_device *bl, int brightness)
+{
+	struct ep93xxbl *ep93xxbl = bl_get_data(bl);
+
+	__raw_writel((brightness << 8) | EP93XX_MAX_COUNT, ep93xxbl->mmio);
+
+	ep93xxbl->brightness = brightness;
+
+	return 0;
+}
+
+static int ep93xxbl_update_status(struct backlight_device *bl)
+{
+	int brightness = bl->props.brightness;
+
+	if (bl->props.power != FB_BLANK_UNBLANK ||
+	    bl->props.fb_blank != FB_BLANK_UNBLANK)
+		brightness = 0;
+
+	return ep93xxbl_set(bl, brightness);
+}
+
+static int ep93xxbl_get_brightness(struct backlight_device *bl)
+{
+	struct ep93xxbl *ep93xxbl = bl_get_data(bl);
+
+	return ep93xxbl->brightness;
+}
+
+static const struct backlight_ops ep93xxbl_ops = {
+	.update_status	= ep93xxbl_update_status,
+	.get_brightness	= ep93xxbl_get_brightness,
+};
+
+static int __init ep93xxbl_probe(struct platform_device *dev)
+{
+	struct ep93xxbl *ep93xxbl;
+	struct backlight_device *bl;
+	struct backlight_properties props;
+
+	ep93xxbl = devm_kzalloc(&dev->dev, sizeof(*ep93xxbl), GFP_KERNEL);
+	if (!ep93xxbl)
+		return -ENOMEM;
+
+	/*
+	 * This register is located in the range already ioremap'ed by
+	 * the framebuffer driver.  A MFD driver seems a bit of overkill
+	 * to handle this so use the static I/O mapping; this address
+	 * is already virtual.
+	 *
+	 * NOTE: No locking is required; the framebuffer does not touch
+	 * this register.
+	 */
+	ep93xxbl->mmio = EP93XX_RASTER_BRIGHTNESS;
+
+	memset(&props, 0, sizeof(struct backlight_properties));
+	props.max_brightness = EP93XX_MAX_BRIGHT;
+	bl = backlight_device_register(dev->name, &dev->dev, ep93xxbl,
+				       &ep93xxbl_ops, &props);
+	if (IS_ERR(bl))
+		return PTR_ERR(bl);
+
+	bl->props.brightness = EP93XX_DEF_BRIGHT;
+
+	platform_set_drvdata(dev, bl);
+
+	ep93xxbl_update_status(bl);
+
+	return 0;
+}
+
+static int ep93xxbl_remove(struct platform_device *dev)
+{
+	struct backlight_device *bl = platform_get_drvdata(dev);
+
+	backlight_device_unregister(bl);
+	platform_set_drvdata(dev, NULL);
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int ep93xxbl_suspend(struct platform_device *dev, pm_message_t state)
+{
+	struct backlight_device *bl = platform_get_drvdata(dev);
+
+	return ep93xxbl_set(bl, 0);
+}
+
+static int ep93xxbl_resume(struct platform_device *dev)
+{
+	struct backlight_device *bl = platform_get_drvdata(dev);
+
+	backlight_update_status(bl);
+	return 0;
+}
+#else
+#define ep93xxbl_suspend	NULL
+#define ep93xxbl_resume		NULL
+#endif
+
+static struct platform_driver ep93xxbl_driver = {
+	.driver		= {
+		.name	= "ep93xx-bl",
+		.owner	= THIS_MODULE,
+	},
+	.probe		= ep93xxbl_probe,
+	.remove		= __devexit_p(ep93xxbl_remove),
+	.suspend	= ep93xxbl_suspend,
+	.resume		= ep93xxbl_resume,
+};
+
+static int __init ep93xxbl_init(void)
+{
+	return platform_driver_register(&ep93xxbl_driver);
+}
+module_init(ep93xxbl_init);
+
+static void __exit ep93xxbl_exit(void)
+{
+	platform_driver_unregister(&ep93xxbl_driver);
+}
+module_exit(ep93xxbl_exit);
+
+MODULE_DESCRIPTION("EP93xx Backlight Driver");
+MODULE_AUTHOR("H Hartley Sweeten <hsweeten@visionengravers.com>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:ep93xx-bl");

drivers/video/backlight/l4f00242t03.c

@@ -125,8 +125,7 @@ static int __devinit l4f00242t03_probe(struct spi_device *spi)
 
 	if (priv == NULL) {
 		dev_err(&spi->dev, "No memory for this device.\n");
-		ret = -ENOMEM;
-		goto err;
+		return -ENOMEM;
 	}
 
 	dev_set_drvdata(&spi->dev, priv);
@@ -139,7 +138,7 @@ static int __devinit l4f00242t03_probe(struct spi_device *spi)
 	if (ret) {
 		dev_err(&spi->dev,
 			"Unable to get the lcd l4f00242t03 reset gpio.\n");
-		return ret;
+		goto err;
 	}
 
 	ret = gpio_direction_output(pdata->reset_gpio, 1);
@@ -151,7 +150,7 @@ static int __devinit l4f00242t03_probe(struct spi_device *spi)
 	if (ret) {
 		dev_err(&spi->dev,
 			"Unable to get the lcd l4f00242t03 data en gpio.\n");
-		return ret;
+		goto err2;
 	}
 
 	ret = gpio_direction_output(pdata->data_enable_gpio, 0);
@@ -222,9 +221,9 @@ static int __devexit l4f00242t03_remove(struct spi_device *spi)
 	gpio_free(pdata->reset_gpio);
 
 	if (priv->io_reg)
-		regulator_put(priv->core_reg);
-	if (priv->core_reg)
 		regulator_put(priv->io_reg);
+	if (priv->core_reg)
+		regulator_put(priv->core_reg);
 
 	kfree(priv);
 

drivers/video/backlight/max8925_bl.c

@@ -162,6 +162,7 @@ static int __devinit max8925_backlight_probe(struct platform_device *pdev)
 	backlight_update_status(bl);
 	return 0;
 out:
+	backlight_device_unregister(bl);
 	kfree(data);
 	return ret;
 }

drivers/video/backlight/mbp_nvidia_bl.c

@@ -141,7 +141,7 @@ static const struct dmi_system_id __initdata mbp_device_table[] = {
 		.callback	= mbp_dmi_match,
 		.ident		= "MacBook 1,1",
 		.matches	= {
-			DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
+			DMI_MATCH(DMI_SYS_VENDOR, "Apple Computer, Inc."),
 			DMI_MATCH(DMI_PRODUCT_NAME, "MacBook1,1"),
 		},
 		.driver_data	= (void *)&intel_chipset_data,
@@ -182,6 +182,42 @@ static const struct dmi_system_id __initdata mbp_device_table[] = {
 		},
 		.driver_data	= (void *)&intel_chipset_data,
 	},
+	{
+		.callback	= mbp_dmi_match,
+		.ident		= "MacBookPro 1,1",
+		.matches	= {
+			DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro1,1"),
+		},
+		.driver_data	= (void *)&intel_chipset_data,
+	},
+	{
+		.callback	= mbp_dmi_match,
+		.ident		= "MacBookPro 1,2",
+		.matches	= {
+			DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro1,2"),
+		},
+		.driver_data	= (void *)&intel_chipset_data,
+	},
+	{
+		.callback	= mbp_dmi_match,
+		.ident		= "MacBookPro 2,1",
+		.matches	= {
+			DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro2,1"),
+		},
+		.driver_data	= (void *)&intel_chipset_data,
+	},
+	{
+		.callback	= mbp_dmi_match,
+		.ident		= "MacBookPro 2,2",
+		.matches	= {
+			DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro2,2"),
+		},
+		.driver_data	= (void *)&intel_chipset_data,
+	},
 	{
 		.callback	= mbp_dmi_match,
 		.ident		= "MacBookPro 3,1",
@@ -236,6 +272,15 @@ static const struct dmi_system_id __initdata mbp_device_table[] = {
 		},
 		.driver_data	= (void *)&nvidia_chipset_data,
 	},
+	{
+		.callback	= mbp_dmi_match,
+		.ident		= "MacBook 6,1",
+		.matches	= {
+			DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "MacBook6,1"),
+		},
+		.driver_data	= (void *)&nvidia_chipset_data,
+	},
 	{
 		.callback	= mbp_dmi_match,
 		.ident		= "MacBookAir 2,1",

drivers/video/backlight/pcf50633-backlight.c

+/*
+ *  Copyright (C) 2009-2010, Lars-Peter Clausen <lars@metafoo.de>
+ *      PCF50633 backlight device driver
+ *
+ *  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.
+ *
+ *  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.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+
+#include <linux/backlight.h>
+#include <linux/fb.h>
+
+#include <linux/mfd/pcf50633/core.h>
+#include <linux/mfd/pcf50633/backlight.h>
+
+struct pcf50633_bl {
+	struct pcf50633 *pcf;
+	struct backlight_device *bl;
+
+	unsigned int brightness;
+	unsigned int brightness_limit;
+};
+
+/*
+ * pcf50633_bl_set_brightness_limit
+ *
+ * Update the brightness limit for the pc50633 backlight. The actual brightness
+ * will not go above the limit. This is useful to limit power drain for example
+ * on low battery.
+ *
+ * @dev: Pointer to a pcf50633 device
+ * @limit: The brightness limit. Valid values are 0-63
+ */
+int pcf50633_bl_set_brightness_limit(struct pcf50633 *pcf, unsigned int limit)
+{
+	struct pcf50633_bl *pcf_bl = platform_get_drvdata(pcf->bl_pdev);
+
+	if (!pcf_bl)
+		return -ENODEV;
+
+	pcf_bl->brightness_limit = limit & 0x3f;
+	backlight_update_status(pcf_bl->bl);
+
+    return 0;
+}
+
+static int pcf50633_bl_update_status(struct backlight_device *bl)
+{
+	struct pcf50633_bl *pcf_bl = bl_get_data(bl);
+	unsigned int new_brightness;
+
+
+	if (bl->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK) ||
+		bl->props.power != FB_BLANK_UNBLANK)
+		new_brightness = 0;
+	else if (bl->props.brightness < pcf_bl->brightness_limit)
+		new_brightness = bl->props.brightness;
+	else
+		new_brightness = pcf_bl->brightness_limit;
+
+
+	if (pcf_bl->brightness == new_brightness)
+		return 0;
+
+	if (new_brightness) {
+		pcf50633_reg_write(pcf_bl->pcf, PCF50633_REG_LEDOUT,
+					new_brightness);
+		if (!pcf_bl->brightness)
+			pcf50633_reg_write(pcf_bl->pcf, PCF50633_REG_LEDENA, 1);
+	} else {
+		pcf50633_reg_write(pcf_bl->pcf, PCF50633_REG_LEDENA, 0);
+	}
+
+	pcf_bl->brightness = new_brightness;
+
+	return 0;
+}
+
+static int pcf50633_bl_get_brightness(struct backlight_device *bl)
+{
+	struct pcf50633_bl *pcf_bl = bl_get_data(bl);
+	return pcf_bl->brightness;
+}
+
+static const struct backlight_ops pcf50633_bl_ops = {
+	.get_brightness = pcf50633_bl_get_brightness,
+	.update_status	= pcf50633_bl_update_status,
+	.options	= BL_CORE_SUSPENDRESUME,
+};
+
+static int __devinit pcf50633_bl_probe(struct platform_device *pdev)
+{
+	int ret;
+	struct pcf50633_bl *pcf_bl;
+	struct device *parent = pdev->dev.parent;
+	struct pcf50633_platform_data *pcf50633_data = parent->platform_data;
+	struct pcf50633_bl_platform_data *pdata = pcf50633_data->backlight_data;
+	struct backlight_properties bl_props;
+
+	pcf_bl = kzalloc(sizeof(*pcf_bl), GFP_KERNEL);
+	if (!pcf_bl)
+		return -ENOMEM;
+
+	bl_props.max_brightness = 0x3f;
+	bl_props.power = FB_BLANK_UNBLANK;
+
+	if (pdata) {
+		bl_props.brightness = pdata->default_brightness;
+		pcf_bl->brightness_limit = pdata->default_brightness_limit;
+	} else {
+		bl_props.brightness = 0x3f;
+		pcf_bl->brightness_limit = 0x3f;
+	}
+
+	pcf_bl->pcf = dev_to_pcf50633(pdev->dev.parent);
+
+	pcf_bl->bl = backlight_device_register(pdev->name, &pdev->dev, pcf_bl,
+						&pcf50633_bl_ops, &bl_props);
+
+	if (IS_ERR(pcf_bl->bl)) {
+		ret = PTR_ERR(pcf_bl->bl);
+		goto err_free;
+	}
+
+	platform_set_drvdata(pdev, pcf_bl);
+
+	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 */
+	pcf_bl->brightness = pcf_bl->bl->props.brightness + 1;
+
+	backlight_update_status(pcf_bl->bl);
+
+	return 0;
+
+err_free:
+	kfree(pcf_bl);
+
+	return ret;
+}
+
+static int __devexit pcf50633_bl_remove(struct platform_device *pdev)
+{
+	struct pcf50633_bl *pcf_bl = platform_get_drvdata(pdev);
+
+	backlight_device_unregister(pcf_bl->bl);
+
+	platform_set_drvdata(pdev, NULL);
+
+	kfree(pcf_bl);
+
+	return 0;
+}
+
+static struct platform_driver pcf50633_bl_driver = {
+	.probe =	pcf50633_bl_probe,
+	.remove =	__devexit_p(pcf50633_bl_remove),
+	.driver = {
+		.name = "pcf50633-backlight",
+	},
+};
+
+static int __init pcf50633_bl_init(void)
+{
+	return platform_driver_register(&pcf50633_bl_driver);
+}
+module_init(pcf50633_bl_init);
+
+static void __exit pcf50633_bl_exit(void)
+{
+	platform_driver_unregister(&pcf50633_bl_driver);
+}
+module_exit(pcf50633_bl_exit);
+
+MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
+MODULE_DESCRIPTION("PCF50633 backlight driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:pcf50633-backlight");

drivers/video/backlight/s6e63m0_gamma.h

+/* linux/drivers/video/samsung/s6e63m0_brightness.h
+ *
+ * Gamma level definitions.
+ *
+ * Copyright (c) 2009 Samsung Electronics
+ * InKi Dae <inki.dae@samsung.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.
+*/
+
+#ifndef _S6E63M0_BRIGHTNESS_H
+#define _S6E63M0_BRIGHTNESS_H
+
+#define MAX_GAMMA_LEVEL		11
+#define GAMMA_TABLE_COUNT	21
+
+/* gamma value: 2.2 */
+static const unsigned int s6e63m0_22_300[] = {
+	0x18, 0x08, 0x24, 0x5f, 0x50, 0x2d, 0xB6,
+	0xB9, 0xA7, 0xAd, 0xB1, 0x9f, 0xbe, 0xC0,
+	0xB5, 0x00, 0xa0, 0x00, 0xa4, 0x00, 0xdb
+};
+
+static const unsigned int s6e63m0_22_280[] = {
+	0x18, 0x08, 0x24, 0x64, 0x56, 0x33, 0xB6,
+	0xBA, 0xA8, 0xAC, 0xB1, 0x9D, 0xC1, 0xC1,
+	0xB7, 0x00, 0x9C, 0x00, 0x9F, 0x00, 0xD6
+};
+
+static const unsigned int s6e63m0_22_260[] = {
+	0x18, 0x08, 0x24, 0x66, 0x58, 0x34, 0xB6,
+	0xBA, 0xA7, 0xAF, 0xB3, 0xA0, 0xC1, 0xC2,
+	0xB7, 0x00, 0x97, 0x00, 0x9A, 0x00, 0xD1
+
+};
+
+static const unsigned int s6e63m0_22_240[] = {
+	0x18, 0x08, 0x24, 0x62, 0x54, 0x30, 0xB9,
+	0xBB, 0xA9, 0xB0, 0xB3, 0xA1, 0xC1, 0xC3,
+	0xB7, 0x00, 0x91, 0x00, 0x95, 0x00, 0xDA
+
+};
+static const unsigned int s6e63m0_22_220[] = {
+	0x18, 0x08, 0x24, 0x63, 0x53, 0x31, 0xB8,
+	0xBC, 0xA9, 0xB0, 0xB5, 0xA2, 0xC4, 0xC4,
+	0xB8, 0x00, 0x8B, 0x00, 0x8E, 0x00, 0xC2
+};
+
+static const unsigned int s6e63m0_22_200[] = {
+	0x18, 0x08, 0x24, 0x66, 0x55, 0x34, 0xBA,
+	0xBD, 0xAB, 0xB1, 0xB5, 0xA3, 0xC5, 0xC6,
+	0xB9, 0x00, 0x85, 0x00, 0x88, 0x00, 0xBA
+};
+
+static const unsigned int s6e63m0_22_170[] = {
+	0x18, 0x08, 0x24, 0x69, 0x54, 0x37, 0xBB,
+	0xBE, 0xAC, 0xB4, 0xB7, 0xA6, 0xC7, 0xC8,
+	0xBC, 0x00, 0x7B, 0x00, 0x7E, 0x00, 0xAB
+};
+
+static const unsigned int s6e63m0_22_140[] = {
+	0x18, 0x08, 0x24, 0x6C, 0x54, 0x3A, 0xBC,
+	0xBF, 0xAC, 0xB7, 0xBB, 0xA9, 0xC9, 0xC9,
+	0xBE, 0x00, 0x71, 0x00, 0x73, 0x00, 0x9E
+};
+
+static const unsigned int s6e63m0_22_110[] = {
+	0x18, 0x08, 0x24, 0x70, 0x51, 0x3E, 0xBF,
+	0xC1, 0xAF, 0xB9, 0xBC, 0xAB, 0xCC, 0xCC,
+	0xC2, 0x00, 0x65, 0x00, 0x67, 0x00, 0x8D
+};
+
+static const unsigned int s6e63m0_22_90[] = {
+	0x18, 0x08, 0x24, 0x73, 0x4A, 0x3D, 0xC0,
+	0xC2, 0xB1, 0xBB, 0xBE, 0xAC, 0xCE, 0xCF,
+	0xC5, 0x00, 0x5D, 0x00, 0x5E, 0x00, 0x82
+};
+
+static const unsigned int s6e63m0_22_30[] = {
+	0x18, 0x08, 0x24, 0x78, 0xEC, 0x3D, 0xC8,
+	0xC2, 0xB6, 0xC4, 0xC7, 0xB6, 0xD5, 0xD7,
+	0xCC, 0x00, 0x39, 0x00, 0x36, 0x00, 0x51
+};
+
+/* gamma value: 1.9 */
+static const unsigned int s6e63m0_19_300[] = {
+	0x18, 0x08, 0x24, 0x61, 0x5F, 0x39, 0xBA,
+	0xBD, 0xAD, 0xB1, 0xB6, 0xA5, 0xC4, 0xC5,
+	0xBC, 0x00, 0xA0, 0x00, 0xA4, 0x00, 0xDB
+};
+
+static const unsigned int s6e63m0_19_280[] = {
+	0x18, 0x08, 0x24, 0x61, 0x60, 0x39, 0xBB,
+	0xBE, 0xAD, 0xB2, 0xB6, 0xA6, 0xC5, 0xC7,
+	0xBD, 0x00, 0x9B, 0x00, 0x9E, 0x00, 0xD5
+};
+
+static const unsigned int s6e63m0_19_260[] = {
+	0x18, 0x08, 0x24, 0x63, 0x61, 0x3B, 0xBA,
+	0xBE, 0xAC, 0xB3, 0xB8, 0xA7, 0xC6, 0xC8,
+	0xBD, 0x00, 0x96, 0x00, 0x98, 0x00, 0xCF
+};
+
+static const unsigned int s6e63m0_19_240[] = {
+	0x18, 0x08, 0x24, 0x67, 0x64, 0x3F, 0xBB,
+	0xBE, 0xAD, 0xB3, 0xB9, 0xA7, 0xC8, 0xC9,
+	0xBE, 0x00, 0x90, 0x00, 0x92, 0x00, 0xC8
+};
+
+static const unsigned int s6e63m0_19_220[] = {
+	0x18, 0x08, 0x24, 0x68, 0x64, 0x40, 0xBC,
+	0xBF, 0xAF, 0xB4, 0xBA, 0xA9, 0xC8, 0xCA,
+	0xBE, 0x00, 0x8B, 0x00, 0x8C, 0x00, 0xC0
+};
+
+static const unsigned int s6e63m0_19_200[] = {
+	0x18, 0x08, 0x24, 0x68, 0x64, 0x3F, 0xBE,
+	0xC0, 0xB0, 0xB6, 0xBB, 0xAB, 0xC8, 0xCB,
+	0xBF, 0x00, 0x85, 0x00, 0x86, 0x00, 0xB8
+};
+
+static const unsigned int s6e63m0_19_170[] = {
+	0x18, 0x08, 0x24, 0x69, 0x64, 0x40, 0xBF,
+	0xC1, 0xB0, 0xB9, 0xBE, 0xAD, 0xCB, 0xCD,
+	0xC2, 0x00, 0x7A, 0x00, 0x7B, 0x00, 0xAA
+};
+
+static const unsigned int s6e63m0_19_140[] = {
+	0x18, 0x08, 0x24, 0x6E, 0x65, 0x45, 0xC0,
+	0xC3, 0xB2, 0xBA, 0xBE, 0xAE, 0xCD, 0xD0,
+	0xC4, 0x00, 0x70, 0x00, 0x70, 0x00, 0x9C
+};
+
+static const unsigned int s6e63m0_19_110[] = {
+	0x18, 0x08, 0x24, 0x6F, 0x65, 0x46, 0xC2,
+	0xC4, 0xB3, 0xBF, 0xC2, 0xB2, 0xCF, 0xD1,
+	0xC6, 0x00, 0x64, 0x00, 0x64, 0x00, 0x8D
+};
+
+static const unsigned int s6e63m0_19_90[] = {
+	0x18, 0x08, 0x24, 0x74, 0x60, 0x4A, 0xC3,
+	0xC6, 0xB5, 0xBF, 0xC3, 0xB2, 0xD2, 0xD3,
+	0xC8, 0x00, 0x5B, 0x00, 0x5B, 0x00, 0x81
+};
+
+static const unsigned int s6e63m0_19_30[] = {
+	0x18, 0x08, 0x24, 0x84, 0x45, 0x4F, 0xCA,
+	0xCB, 0xBC, 0xC9, 0xCB, 0xBC, 0xDA, 0xDA,
+	0xD0, 0x00, 0x35, 0x00, 0x34, 0x00, 0x4E
+};
+
+/* gamma value: 1.7 */
+static const unsigned int s6e63m0_17_300[] = {
+	0x18, 0x08, 0x24, 0x70, 0x70, 0x4F, 0xBF,
+	0xC2, 0xB2, 0xB8, 0xBC, 0xAC, 0xCB, 0xCD,
+	0xC3, 0x00, 0xA0, 0x00, 0xA4, 0x00, 0xDB
+};
+
+static const unsigned int s6e63m0_17_280[] = {
+	0x18, 0x08, 0x24, 0x71, 0x71, 0x50, 0xBF,
+	0xC2, 0xB2, 0xBA, 0xBE, 0xAE, 0xCB, 0xCD,
+	0xC3, 0x00, 0x9C, 0x00, 0x9F, 0x00, 0xD6
+};
+
+static const unsigned int s6e63m0_17_260[] = {
+	0x18, 0x08, 0x24, 0x72, 0x72, 0x50, 0xC0,
+	0xC3, 0xB4, 0xB9, 0xBE, 0xAE, 0xCC, 0xCF,
+	0xC4, 0x00, 0x97, 0x00, 0x9A, 0x00, 0xD1
+};
+
+static const unsigned int s6e63m0_17_240[] = {
+	0x18, 0x08, 0x24, 0x71, 0x72, 0x4F, 0xC2,
+	0xC4, 0xB5, 0xBB, 0xBF, 0xB0, 0xCC, 0xCF,
+	0xC3, 0x00, 0x91, 0x00, 0x95, 0x00, 0xCA
+};
+
+static const unsigned int s6e63m0_17_220[] = {
+	0x18, 0x08, 0x24, 0x71, 0x73, 0x4F, 0xC2,
+	0xC5, 0xB5, 0xBD, 0xC0, 0xB2, 0xCD, 0xD1,
+	0xC5, 0x00, 0x8B, 0x00, 0x8E, 0x00, 0xC2
+};
+
+static const unsigned int s6e63m0_17_200[] = {
+	0x18, 0x08, 0x24, 0x72, 0x75, 0x51, 0xC2,
+	0xC6, 0xB5, 0xBF, 0xC1, 0xB3, 0xCE, 0xD1,
+	0xC6, 0x00, 0x85, 0x00, 0x88, 0x00, 0xBA
+};
+
+static const unsigned int s6e63m0_17_170[] = {
+	0x18, 0x08, 0x24, 0x75, 0x77, 0x54, 0xC3,
+	0xC7, 0xB7, 0xC0, 0xC3, 0xB4, 0xD1, 0xD3,
+	0xC9, 0x00, 0x7B, 0x00, 0x7E, 0x00, 0xAB
+};
+
+static const unsigned int s6e63m0_17_140[] = {
+	0x18, 0x08, 0x24, 0x7B, 0x77, 0x58, 0xC3,
+	0xC8, 0xB8, 0xC2, 0xC6, 0xB6, 0xD3, 0xD4,
+	0xCA, 0x00, 0x71, 0x00, 0x73, 0x00, 0x9E
+};
+
+static const unsigned int s6e63m0_17_110[] = {
+	0x18, 0x08, 0x24, 0x81, 0x7B, 0x5D, 0xC6,
+	0xCA, 0xBB, 0xC3, 0xC7, 0xB8, 0xD6, 0xD8,
+	0xCD, 0x00, 0x65, 0x00, 0x67, 0x00, 0x8D
+};
+
+static const unsigned int s6e63m0_17_90[] = {
+	0x18, 0x08, 0x24, 0x82, 0x7A, 0x5B, 0xC8,
+	0xCB, 0xBD, 0xC5, 0xCA, 0xBA, 0xD6, 0xD8,
+	0xCE, 0x00, 0x5D, 0x00, 0x5E, 0x00, 0x82
+};
+
+static const unsigned int s6e63m0_17_30[] = {
+	0x18, 0x08, 0x24, 0x8F, 0x73, 0x63, 0xD1,
+	0xD0, 0xC5, 0xCC, 0xD1, 0xC2, 0xDE, 0xE0,
+	0xD6, 0x00, 0x39, 0x00, 0x36, 0x00, 0x51
+};
+
+struct s6e63m0_gamma {
+	unsigned int *gamma_22_table[MAX_GAMMA_LEVEL];
+	unsigned int *gamma_19_table[MAX_GAMMA_LEVEL];
+	unsigned int *gamma_17_table[MAX_GAMMA_LEVEL];
+};
+
+static struct s6e63m0_gamma gamma_table = {
+	.gamma_22_table[0] = (unsigned int *)&s6e63m0_22_30,
+	.gamma_22_table[1] = (unsigned int *)&s6e63m0_22_90,
+	.gamma_22_table[2] = (unsigned int *)&s6e63m0_22_110,
+	.gamma_22_table[3] = (unsigned int *)&s6e63m0_22_140,
+	.gamma_22_table[4] = (unsigned int *)&s6e63m0_22_170,
+	.gamma_22_table[5] = (unsigned int *)&s6e63m0_22_200,
+	.gamma_22_table[6] = (unsigned int *)&s6e63m0_22_220,
+	.gamma_22_table[7] = (unsigned int *)&s6e63m0_22_240,
+	.gamma_22_table[8] = (unsigned int *)&s6e63m0_22_260,
+	.gamma_22_table[9] = (unsigned int *)&s6e63m0_22_280,
+	.gamma_22_table[10] = (unsigned int *)&s6e63m0_22_300,
+
+	.gamma_19_table[0] = (unsigned int *)&s6e63m0_19_30,
+	.gamma_19_table[1] = (unsigned int *)&s6e63m0_19_90,
+	.gamma_19_table[2] = (unsigned int *)&s6e63m0_19_110,
+	.gamma_19_table[3] = (unsigned int *)&s6e63m0_19_140,
+	.gamma_19_table[4] = (unsigned int *)&s6e63m0_19_170,
+	.gamma_19_table[5] = (unsigned int *)&s6e63m0_19_200,
+	.gamma_19_table[6] = (unsigned int *)&s6e63m0_19_220,
+	.gamma_19_table[7] = (unsigned int *)&s6e63m0_19_240,
+	.gamma_19_table[8] = (unsigned int *)&s6e63m0_19_260,
+	.gamma_19_table[9] = (unsigned int *)&s6e63m0_19_280,
+	.gamma_19_table[10] = (unsigned int *)&s6e63m0_19_300,
+
+	.gamma_17_table[0] = (unsigned int *)&s6e63m0_17_30,
+	.gamma_17_table[1] = (unsigned int *)&s6e63m0_17_90,
+	.gamma_17_table[2] = (unsigned int *)&s6e63m0_17_110,
+	.gamma_17_table[3] = (unsigned int *)&s6e63m0_17_140,
+	.gamma_17_table[4] = (unsigned int *)&s6e63m0_17_170,
+	.gamma_17_table[5] = (unsigned int *)&s6e63m0_17_200,
+	.gamma_17_table[6] = (unsigned int *)&s6e63m0_17_220,
+	.gamma_17_table[7] = (unsigned int *)&s6e63m0_17_240,
+	.gamma_17_table[8] = (unsigned int *)&s6e63m0_17_260,
+	.gamma_17_table[9] = (unsigned int *)&s6e63m0_17_280,
+	.gamma_17_table[10] = (unsigned int *)&s6e63m0_17_300,
+};
+
+#endif
+

include/linux/i2c/adp8860.h

+/*
+ * Definitions and platform data for Analog Devices
+ * Backlight drivers ADP8860
+ *
+ * Copyright 2009-2010 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef __LINUX_I2C_ADP8860_H
+#define __LINUX_I2C_ADP8860_H
+
+#include <linux/leds.h>
+#include <linux/types.h>
+
+#define ID_ADP8860		8860
+
+#define ADP8860_MAX_BRIGHTNESS	0x7F
+#define FLAG_OFFT_SHIFT 8
+
+/*
+ * LEDs subdevice platform data
+ */
+
+#define ADP8860_LED_DIS_BLINK	(0 << FLAG_OFFT_SHIFT)
+#define ADP8860_LED_OFFT_600ms	(1 << FLAG_OFFT_SHIFT)
+#define ADP8860_LED_OFFT_1200ms	(2 << FLAG_OFFT_SHIFT)
+#define ADP8860_LED_OFFT_1800ms	(3 << FLAG_OFFT_SHIFT)
+
+#define ADP8860_LED_ONT_200ms	0
+#define ADP8860_LED_ONT_600ms	1
+#define ADP8860_LED_ONT_800ms	2
+#define ADP8860_LED_ONT_1200ms	3
+
+#define ADP8860_LED_D7		(7)
+#define ADP8860_LED_D6		(6)
+#define ADP8860_LED_D5		(5)
+#define ADP8860_LED_D4		(4)
+#define ADP8860_LED_D3		(3)
+#define ADP8860_LED_D2		(2)
+#define ADP8860_LED_D1		(1)
+
+/*
+ * Backlight subdevice platform data
+ */
+
+#define ADP8860_BL_D7		(1 << 6)
+#define ADP8860_BL_D6		(1 << 5)
+#define ADP8860_BL_D5		(1 << 4)
+#define ADP8860_BL_D4		(1 << 3)
+#define ADP8860_BL_D3		(1 << 2)
+#define ADP8860_BL_D2		(1 << 1)
+#define ADP8860_BL_D1		(1 << 0)
+
+#define ADP8860_FADE_T_DIS	0	/* Fade Timer Disabled */
+#define ADP8860_FADE_T_300ms	1	/* 0.3 Sec */
+#define ADP8860_FADE_T_600ms	2
+#define ADP8860_FADE_T_900ms	3
+#define ADP8860_FADE_T_1200ms	4
+#define ADP8860_FADE_T_1500ms	5
+#define ADP8860_FADE_T_1800ms	6
+#define ADP8860_FADE_T_2100ms	7
+#define ADP8860_FADE_T_2400ms	8
+#define ADP8860_FADE_T_2700ms	9
+#define ADP8860_FADE_T_3000ms	10
+#define ADP8860_FADE_T_3500ms	11
+#define ADP8860_FADE_T_4000ms	12
+#define ADP8860_FADE_T_4500ms	13
+#define ADP8860_FADE_T_5000ms	14
+#define ADP8860_FADE_T_5500ms	15	/* 5.5 Sec */
+
+#define ADP8860_FADE_LAW_LINEAR	0
+#define ADP8860_FADE_LAW_SQUARE	1
+#define ADP8860_FADE_LAW_CUBIC1	2
+#define ADP8860_FADE_LAW_CUBIC2	3
+
+#define ADP8860_BL_AMBL_FILT_80ms	0	/* Light sensor filter time */
+#define ADP8860_BL_AMBL_FILT_160ms	1
+#define ADP8860_BL_AMBL_FILT_320ms	2
+#define ADP8860_BL_AMBL_FILT_640ms	3
+#define ADP8860_BL_AMBL_FILT_1280ms	4
+#define ADP8860_BL_AMBL_FILT_2560ms	5
+#define ADP8860_BL_AMBL_FILT_5120ms	6
+#define ADP8860_BL_AMBL_FILT_10240ms	7	/* 10.24 sec */
+
+/*
+ * Blacklight current 0..30mA
+ */
+#define ADP8860_BL_CUR_mA(I)		((I * 127) / 30)
+
+/*
+ * L2 comparator current 0..1106uA
+ */
+#define ADP8860_L2_COMP_CURR_uA(I)	((I * 255) / 1106)
+
+/*
+ * L3 comparator current 0..138uA
+ */
+#define ADP8860_L3_COMP_CURR_uA(I)	((I * 255) / 138)
+
+struct adp8860_backlight_platform_data {
+	u8 bl_led_assign;	/* 1 = Backlight 0 = Individual LED */
+
+	u8 bl_fade_in;		/* Backlight Fade-In Timer */
+	u8 bl_fade_out;		/* Backlight Fade-Out Timer */
+	u8 bl_fade_law;		/* fade-on/fade-off transfer characteristic */
+
+	u8 en_ambl_sens;	/* 1 = enable ambient light sensor */
+	u8 abml_filt;		/* Light sensor filter time */
+
+	u8 l1_daylight_max;	/* use BL_CUR_mA(I) 0 <= I <= 30 mA */
+	u8 l1_daylight_dim;	/* typ = 0, use BL_CUR_mA(I) 0 <= I <= 30 mA */
+	u8 l2_office_max;	/* use BL_CUR_mA(I) 0 <= I <= 30 mA */
+	u8 l2_office_dim;	/* typ = 0, use BL_CUR_mA(I) 0 <= I <= 30 mA */
+	u8 l3_dark_max;		/* use BL_CUR_mA(I) 0 <= I <= 30 mA */
+	u8 l3_dark_dim;		/* typ = 0, use BL_CUR_mA(I) 0 <= I <= 30 mA */
+
+	u8 l2_trip;		/* use L2_COMP_CURR_uA(I) 0 <= I <= 1106 uA */
+	u8 l2_hyst;		/* use L2_COMP_CURR_uA(I) 0 <= I <= 1106 uA */
+	u8 l3_trip;		/* use L3_COMP_CURR_uA(I) 0 <= I <= 551 uA */
+	u8 l3_hyst;		/* use L3_COMP_CURR_uA(I) 0 <= I <= 551 uA */
+
+	/**
+	 * Independent Current Sinks / LEDS
+	 * Sinks not assigned to the Backlight can be exposed to
+	 * user space using the LEDS CLASS interface
+	 */
+
+	int num_leds;
+	struct led_info	*leds;
+	u8 led_fade_in;		/* LED Fade-In Timer */
+	u8 led_fade_out;	/* LED Fade-Out Timer */
+	u8 led_fade_law;	/* fade-on/fade-off transfer characteristic */
+	u8 led_on_time;
+
+	/**
+	 * Gain down disable. Setting this option does not allow the
+	 * charge pump to switch to lower gains. NOT AVAILABLE on ADP8860
+	 * 1 = the charge pump doesn't switch down in gain until all LEDs are 0.
+	 *  The charge pump switches up in gain as needed. This feature is
+	 *  useful if the ADP8863 charge pump is used to drive an external load.
+	 *  This feature must be used when utilizing small fly capacitors
+	 *  (0402 or smaller).
+	 * 0 = the charge pump automatically switches up and down in gain.
+	 *  This provides optimal efficiency, but is not suitable for driving
+	 *  loads that are not connected through the ADP8863 diode drivers.
+	 *  Additionally, the charge pump fly capacitors should be low ESR
+	 * and sized 0603 or greater.
+	 */
+
+	u8 gdwn_dis;
+};
+
+#endif /* __LINUX_I2C_ADP8860_H */

include/linux/lcd.h

@@ -69,6 +69,29 @@ struct lcd_device {
 	struct device dev;
 };
 
+struct lcd_platform_data {
+	/* reset lcd panel device. */
+	int (*reset)(struct lcd_device *ld);
+	/* on or off to lcd panel. if 'enable' is 0 then
+	   lcd power off and 1, lcd power on. */
+	int (*power_on)(struct lcd_device *ld, int enable);
+
+	/* it indicates whether lcd panel was enabled
+	   from bootloader or not. */
+	int lcd_enabled;
+	/* it means delay for stable time when it becomes low to high
+	   or high to low that is dependent on whether reset gpio is
+	   low active or high active. */
+	unsigned int reset_delay;
+	/* stable time needing to become lcd power on. */
+	unsigned int power_on_delay;
+	/* stable time needing to become lcd power off. */
+	unsigned int power_off_delay;
+
+	/* it could be used for any purpose. */
+	void *pdata;
+};
+
 static inline void lcd_set_power(struct lcd_device *ld, int power)
 {
 	mutex_lock(&ld->update_lock);

include/linux/mfd/pcf50633/backlight.h

+/*
+ *  Copyright (C) 2009-2010, Lars-Peter Clausen <lars@metafoo.de>
+ *      PCF50633 backlight device driver
+ *
+ *  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.
+ *
+ *  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.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#ifndef __LINUX_MFD_PCF50633_BACKLIGHT
+#define __LINUX_MFD_PCF50633_BACKLIGHT
+
+/*
+* @default_brightness: Backlight brightness is initialized to this value
+*
+* Brightness to be used after the driver has been probed.
+* Valid range 0-63.
+*
+* @default_brightness_limit: The actual brightness is limited by this value
+*
+* Brightness limit to be used after the driver has been probed. This is useful
+* when it is not known how much power is available for the backlight during
+* probe.
+* Valid range 0-63. Can be changed later with pcf50633_bl_set_brightness_limit.
+*
+* @ramp_time: Display ramp time when changing brightness
+*
+* When changing the backlights brightness the change is not instant, instead
+* it fades smooth from one state to another. This value specifies how long
+* the fade should take. The lower the value the higher the fade time.
+* Valid range 0-255
+*/
+struct pcf50633_bl_platform_data {
+	unsigned int	default_brightness;
+	unsigned int	default_brightness_limit;
+	uint8_t		ramp_time;
+};
+
+
+struct pcf50633;
+
+int pcf50633_bl_set_brightness_limit(struct pcf50633 *pcf, unsigned int limit);
+
+#endif
+

include/linux/mfd/pcf50633/core.h

@@ -18,6 +18,7 @@
 #include <linux/regulator/driver.h>
 #include <linux/regulator/machine.h>
 #include <linux/power_supply.h>
+#include <linux/mfd/pcf50633/backlight.h>
 
 struct pcf50633;
 
@@ -43,6 +44,8 @@ struct pcf50633_platform_data {
 	void (*force_shutdown)(struct pcf50633 *);
 
 	u8 resumers[5];
+
+	struct pcf50633_bl_platform_data *backlight_data;
 };
 
 struct pcf50633_irq {
@@ -152,6 +155,7 @@ struct pcf50633 {
 	struct platform_device *mbc_pdev;
 	struct platform_device *adc_pdev;
 	struct platform_device *input_pdev;
+	struct platform_device *bl_pdev;
 	struct platform_device *regulator_pdev[PCF50633_NUM_REGULATORS];
 };