From 94760bf2523b4b5d3938e85ea0964ca7cd59a42b Mon Sep 17 00:00:00 2001
From: Alexander Shiyan <shc_work@mail.ru>
Date: Sat, 17 Nov 2012 17:57:20 +0400
Subject: ARM: clps711x: Moving backlight controls of framebuffer driver to the
 board

This patch moves the backlight controls for clps711x-framebuffer driver
to the board code. To control we use "generic-bl" driver.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
[olof: fixed space/tab whitespace in drivers/video/clps711xfb.c]
Signed-off-by: Olof Johansson <olof@lixom.net>
---
 arch/arm/mach-clps711x/edb7211.c               | 18 ++++++++++++++++++
 arch/arm/mach-clps711x/include/mach/hardware.h |  6 ------
 arch/arm/mach-clps711x/p720t.c                 | 21 ++++++++++++++++++++-
 3 files changed, 38 insertions(+), 7 deletions(-)

(limited to 'arch/arm/mach-clps711x')

diff --git a/arch/arm/mach-clps711x/edb7211.c b/arch/arm/mach-clps711x/edb7211.c
index 81cc6835d7a..d5832b3557a 100644
--- a/arch/arm/mach-clps711x/edb7211.c
+++ b/arch/arm/mach-clps711x/edb7211.c
@@ -13,6 +13,7 @@
 #include <linux/memblock.h>
 #include <linux/types.h>
 #include <linux/interrupt.h>
+#include <linux/backlight.h>
 #include <linux/platform_device.h>
 
 #include <asm/setup.h>
@@ -30,6 +31,7 @@
 
 #define EDB7211_LCD_DC_DC_EN	CLPS711X_GPIO(3, 1)
 #define EDB7211_LCDEN		CLPS711X_GPIO(3, 2)
+#define EDB7211_LCDBL		CLPS711X_GPIO(3, 3)
 
 #define EDB7211_CS8900_BASE	(CS2_PHYS_BASE + 0x300)
 #define EDB7211_CS8900_IRQ	(IRQ_EINT3)
@@ -56,9 +58,22 @@ static struct plat_lcd_data edb7211_lcd_power_pdata = {
 	.set_power	= edb7211_lcd_power_set,
 };
 
+static void edb7211_lcd_backlight_set_intensity(int intensity)
+{
+	gpio_set_value(EDB7211_LCDBL, intensity);
+}
+
+static struct generic_bl_info edb7211_lcd_backlight_pdata = {
+	.name			= "lcd-backlight.0",
+	.default_intensity	= 0x01,
+	.max_intensity		= 0x01,
+	.set_bl_intensity	= edb7211_lcd_backlight_set_intensity,
+};
+
 static struct gpio edb7211_gpios[] __initconst = {
 	{ EDB7211_LCD_DC_DC_EN,	GPIOF_OUT_INIT_LOW,	"LCD DC-DC" },
 	{ EDB7211_LCDEN,	GPIOF_OUT_INIT_LOW,	"LCD POWER" },
+	{ EDB7211_LCDBL,	GPIOF_OUT_INIT_LOW,	"LCD BACKLIGHT" },
 };
 
 static struct map_desc edb7211_io_desc[] __initdata = {
@@ -117,6 +132,9 @@ static void __init edb7211_init(void)
 	platform_device_register_data(&platform_bus, "platform-lcd", 0,
 				      &edb7211_lcd_power_pdata,
 				      sizeof(edb7211_lcd_power_pdata));
+	platform_device_register_data(&platform_bus, "generic-bl", 0,
+				      &edb7211_lcd_backlight_pdata,
+				      sizeof(edb7211_lcd_backlight_pdata));
 	platform_device_register_simple("video-clps711x", 0, NULL, 0);
 	platform_device_register_simple("cs89x0", 0, edb7211_cs8900_resource,
 					ARRAY_SIZE(edb7211_cs8900_resource));
diff --git a/arch/arm/mach-clps711x/include/mach/hardware.h b/arch/arm/mach-clps711x/include/mach/hardware.h
index 6acf714031e..1ebf7b9e69f 100644
--- a/arch/arm/mach-clps711x/include/mach/hardware.h
+++ b/arch/arm/mach-clps711x/include/mach/hardware.h
@@ -81,10 +81,4 @@
 
 #endif /* CONFIG_ARCH_EDB7211 */
 
-/*
- * Relevant bits in port D, which controls power to the various parts of
- * the LCD on the EDB7211.
- */
-#define EDB_PD3_LCDBL		(1<<3)
-
 #endif
diff --git a/arch/arm/mach-clps711x/p720t.c b/arch/arm/mach-clps711x/p720t.c
index e25f10ed560..1518fc83bab 100644
--- a/arch/arm/mach-clps711x/p720t.c
+++ b/arch/arm/mach-clps711x/p720t.c
@@ -25,6 +25,8 @@
 #include <linux/io.h>
 #include <linux/slab.h>
 #include <linux/leds.h>
+#include <linux/sizes.h>
+#include <linux/backlight.h>
 #include <linux/platform_device.h>
 #include <linux/mtd/partitions.h>
 #include <linux/mtd/nand-gpio.h>
@@ -33,7 +35,6 @@
 #include <asm/pgtable.h>
 #include <asm/page.h>
 #include <asm/setup.h>
-#include <asm/sizes.h>
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
@@ -103,6 +104,21 @@ static struct plat_lcd_data p720t_lcd_power_pdata = {
 	.set_power	= p720t_lcd_power_set,
 };
 
+static void p720t_lcd_backlight_set_intensity(int intensity)
+{
+	if (intensity)
+		PLD_PWR |= PLD_S3_ON;
+	else
+		PLD_PWR = 0;
+}
+
+static struct generic_bl_info p720t_lcd_backlight_pdata = {
+	.name			= "lcd-backlight.0",
+	.default_intensity	= 0x01,
+	.max_intensity		= 0x01,
+	.set_bl_intensity	= p720t_lcd_backlight_set_intensity,
+};
+
 /*
  * Map the P720T system PLD. It occupies two address spaces:
  * 0x10000000 and 0x10400000. We map both regions as one.
@@ -187,6 +203,9 @@ static void __init p720t_init(void)
 	platform_device_register_data(&platform_bus, "platform-lcd", 0,
 				      &p720t_lcd_power_pdata,
 				      sizeof(p720t_lcd_power_pdata));
+	platform_device_register_data(&platform_bus, "generic-bl", 0,
+				      &p720t_lcd_backlight_pdata,
+				      sizeof(p720t_lcd_backlight_pdata));
 	platform_device_register_simple("video-clps711x", 0, NULL, 0);
 }
 
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