From e690b9d312ea684170aeb6e92e6b025be95e51d9 Mon Sep 17 00:00:00 2001
From: lars <lars@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Tue, 13 Apr 2010 20:52:41 +0000
Subject: [mx2] vp6500: Add backlight device

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@20843 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
 .../mx2/files/arch/arm/mach-mx2/mach-vp6500.c      | 40 +++++++++++++++++++++-
 1 file changed, 39 insertions(+), 1 deletion(-)

(limited to 'target/linux/mx2/files/arch/arm/mach-mx2/mach-vp6500.c')

diff --git a/target/linux/mx2/files/arch/arm/mach-mx2/mach-vp6500.c b/target/linux/mx2/files/arch/arm/mach-mx2/mach-vp6500.c
index 4ca5c0fd9..fb4464eb8 100644
--- a/target/linux/mx2/files/arch/arm/mach-mx2/mach-vp6500.c
+++ b/target/linux/mx2/files/arch/arm/mach-mx2/mach-vp6500.c
@@ -20,9 +20,9 @@
 #include <linux/input.h>
 #include <linux/input/matrix_keypad.h>
 #include <linux/gpio_keys.h>
+#include <linux/pwm_backlight.h>
 
 static unsigned int vp6500_pins[] = {
-
 	/* UART1 */
 	PE12_PF_UART1_TXD,
 	PE13_PF_UART1_RXD,
@@ -52,8 +52,14 @@ static unsigned int vp6500_pins[] = {
 	PA30_PF_CONTRAST,
 	PA31_PF_OE_ACD,
 #endif
+
+	/* LCD Backlight */
+	PE5_PF_PWMO,
+	VP6500_GPIO_BACKLIGHT_EN | GPIO_GPIO | GPIO_OUT,
 };
 
+/* Flash */
+
 static struct physmap_flash_data vp6500_flash_data = {
 	.width = 2,
 };
@@ -74,6 +80,8 @@ static struct platform_device vp6500_nor_mtd_device = {
 	.resource = &vp6500_flash_resource,
 };
 
+/* LEDs */
+
 static struct gpio_led vp6500_leds[] = {
 	{
 		.name = "vp6500:orange:keypad",
@@ -108,6 +116,8 @@ static struct platform_device vp6500_leds_device = {
 	},
 };
 
+/* Keypad */
+
 static const uint32_t vp6500_keypad_keys[] = {
 	KEY(0, 3, KEY_F2),
 	KEY(0, 4, KEY_RIGHT),
@@ -180,11 +190,38 @@ static struct platform_device vp6500_key_device = {
 	},
 };
 
+/* LCD backlight */
+
+static int vp6500_backlight_notify(struct device *dev, int brightness)
+{
+	gpio_set_value(VP6500_GPIO_BACKLIGHT_EN, !!brightness);
+
+	return brightness;
+}
+
+static struct platform_pwm_backlight_data vp6500_backlight_data = {
+	.max_brightness = 255,
+	.dft_brightness = 100,
+	.pwm_period_ns = 15000000,
+	.notify = vp6500_backlight_notify,
+};
+
+static struct platform_device vp6500_backlight_device = {
+	.name = "pwm-backlight",
+	.id = -1,
+	.dev = {
+		.parent = &mxc_pwm_device.dev,
+		.platform_data = &vp6500_backlight_data,
+	},
+};
+
+
 static struct platform_device *platform_devices[] __initdata = {
 	&vp6500_nor_mtd_device,
 	&vp6500_leds_device,
 	&vp6500_keypad_device,
 	&vp6500_key_device,
+	&vp6500_backlight_device,
 };
 
 static void __init vp6500_board_init(void)
@@ -193,6 +230,7 @@ static void __init vp6500_board_init(void)
 			"vp6500");
 
 	mxc_register_device(&mxc_uart_device0, NULL);
+	mxc_register_device(&mxc_pwm_device, NULL);
 
 	platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
 }
-- 
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