From dac862f29b50e72b3e8125bdd6a7785ea1accb17 Mon Sep 17 00:00:00 2001
From: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Date: Fri, 11 Jan 2013 18:25:13 +0100
Subject: colibri_t30: integrate PWM LED functionality

Make PWM B, C, D accessible from userspace. e.g as
/sys/class/leds/pwm_b.
---
 arch/arm/mach-tegra/board-colibri_t30.c | 40 +++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/arch/arm/mach-tegra/board-colibri_t30.c b/arch/arm/mach-tegra/board-colibri_t30.c
index 4b41036e26e1..75ffa81a2260 100644
--- a/arch/arm/mach-tegra/board-colibri_t30.c
+++ b/arch/arm/mach-tegra/board-colibri_t30.c
@@ -18,6 +18,7 @@
 #include <linux/i2c-tegra.h>
 #include <linux/input.h>
 #include <linux/io.h>
+#include <linux/leds_pwm.h>
 #include <linux/lm95245.h>
 #include <linux/mfd/stmpe.h>
 #include <linux/platform_data/tegra_usb.h>
@@ -350,6 +351,41 @@ static void __init colibri_t30_sdhci_init(void)
 #endif
 }
 
+/* PWM LEDs */
+static struct led_pwm tegra_leds_pwm[] = {
+	{
+		.name		= "pwm_b",
+		.pwm_id		= 1,
+		.max_brightness	= 255,
+		.pwm_period_ns	= 19600,
+	},
+	{
+		.name		= "pwm_c",
+		.pwm_id		= 2,
+		.max_brightness	= 255,
+		.pwm_period_ns	= 19600,
+	},
+	{
+		.name		= "pwm_d",
+		.pwm_id		= 3,
+		.max_brightness	= 255,
+		.pwm_period_ns	= 19600,
+	},
+};
+
+static struct led_pwm_platform_data tegra_leds_pwm_data = {
+	.num_leds	= ARRAY_SIZE(tegra_leds_pwm),
+	.leds		= tegra_leds_pwm,
+};
+
+static struct platform_device tegra_led_pwm_device = {
+	.name	= "leds_pwm",
+	.id	= -1,
+	.dev = {
+		.platform_data = &tegra_leds_pwm_data,
+	},
+};
+
 /* RTC */
 
 #ifdef CONFIG_RTC_DRV_TEGRA
@@ -1080,6 +1116,10 @@ static struct platform_device *colibri_t30_devices[] __initdata = {
 #ifdef CONFIG_KEYBOARD_GPIO
 	&colibri_t30_keys_device,
 #endif
+	&tegra_led_pwm_device,
+	&tegra_pwfm1_device,
+	&tegra_pwfm2_device,
+	&tegra_pwfm3_device,
 };
 
 static void __init colibri_t30_init(void)
-- 
cgit v1.2.3