ARM: S3C2410: H1940: Use leds-gpio driver for LEDs managing

We can use generic leds-gpio driver, as latch api was converted
to gpiolib.

Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

1 files changed, 91 insertions, 2 deletions

diff --git a/arch/arm/mach-s3c2410/mach-h1940.c b/arch/arm/mach-s3c2410/mach-h1940.c
index 07564404fb89..36cdb7210879 100644
--- a/arch/arm/mach-s3c2410/mach-h1940.c
+++ b/arch/arm/mach-s3c2410/mach-h1940.c
@@ -27,6 +27,8 @@
 #include <linux/gpio_keys.h>
 #include <linux/pwm_backlight.h>
 #include <linux/i2c.h>
+#include <linux/leds.h>
+
 #include <video/platform_lcd.h>
 
 #include <linux/mmc/host.h>
@@ -216,9 +218,87 @@ static struct s3c2410fb_mach_info h1940_fb_info __initdata = {
         .gpdup_mask=    0xffffffff,
 };
 
+DEFINE_SPINLOCK(h1940_blink_spin);
+
+int h1940_led_blink_set(unsigned gpio, int state,
+        unsigned long *delay_on, unsigned long *delay_off)
+{
+        int blink_gpio, check_gpio1, check_gpio2;
+
+        switch (gpio) {
+        case H1940_LATCH_LED_GREEN:
+                blink_gpio = S3C2410_GPA(7);
+                check_gpio1 = S3C2410_GPA(1);
+                check_gpio2 = S3C2410_GPA(3);
+                break;
+        case H1940_LATCH_LED_RED:
+                blink_gpio = S3C2410_GPA(1);
+                check_gpio1 = S3C2410_GPA(7);
+                check_gpio2 = S3C2410_GPA(3);
+                break;
+        default:
+                blink_gpio = S3C2410_GPA(3);
+                check_gpio1 = S3C2410_GPA(1);
+                check_gpio1 = S3C2410_GPA(7);
+                break;
+        }
+
+        if (delay_on && delay_off && !*delay_on && !*delay_off)
+                *delay_on = *delay_off = 500;
+
+        spin_lock(&h1940_blink_spin);
+
+        switch (state) {
+        case GPIO_LED_NO_BLINK_LOW:
+        case GPIO_LED_NO_BLINK_HIGH:
+                if (!gpio_get_value(check_gpio1) &&
+                    !gpio_get_value(check_gpio2))
+                        gpio_set_value(H1940_LATCH_LED_FLASH, 0);
+                gpio_set_value(blink_gpio, 0);
+                if (gpio_is_valid(gpio))
+                        gpio_set_value(gpio, state);
+                break;
+        case GPIO_LED_BLINK:
+                if (gpio_is_valid(gpio))
+                        gpio_set_value(gpio, 0);
+                gpio_set_value(H1940_LATCH_LED_FLASH, 1);
+                gpio_set_value(blink_gpio, 1);
+                break;
+        }
+
+        spin_unlock(&h1940_blink_spin);
+
+        return 0;
+}
+EXPORT_SYMBOL(h1940_led_blink_set);
+
+static struct gpio_led h1940_leds_desc[] = {
+        {
+                .name                   = "Green",
+                .default_trigger        = "main-battery-charging-or-full",
+                .gpio                   = H1940_LATCH_LED_GREEN,
+                .retain_state_suspended = 1,
+        },
+        {
+                .name                   = "Red",
+                .default_trigger        = "main-battery-full",
+                .gpio                   = H1940_LATCH_LED_RED,
+                .retain_state_suspended = 1,
+        },
+};
+
+static struct gpio_led_platform_data h1940_leds_pdata = {
+        .num_leds       = ARRAY_SIZE(h1940_leds_desc),
+        .leds           = h1940_leds_desc,
+        .gpio_blink_set = h1940_led_blink_set,
+};
+
 static struct platform_device h1940_device_leds = {
-        .name             = "h1940-leds",
-        .id               = -1,
+        .name   = "leds-gpio",
+        .id     = -1,
+        .dev    = {
+                        .platform_data = &h1940_leds_pdata,
+        },
 };
 
 static struct platform_device h1940_device_bluetooth = {
@@ -500,6 +580,15 @@ static void __init h1940_init(void)
 
         platform_add_devices(h1940_devices, ARRAY_SIZE(h1940_devices));
 
+        gpio_request(S3C2410_GPA(1), "Red LED blink");
+        gpio_request(S3C2410_GPA(3), "Blue LED blink");
+        gpio_request(S3C2410_GPA(7), "Green LED blink");
+        gpio_request(H1940_LATCH_LED_FLASH, "LED blink");
+        gpio_direction_output(S3C2410_GPA(1), 0);
+        gpio_direction_output(S3C2410_GPA(3), 0);
+        gpio_direction_output(S3C2410_GPA(7), 0);
+        gpio_direction_output(H1940_LATCH_LED_FLASH, 0);
+
         i2c_register_board_info(0, h1940_i2c_devices,
                 ARRAY_SIZE(h1940_i2c_devices));
 }