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ARM: S3C2442: RX1950: Add support for LED blinking

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Add .gpio_set_blink callback to support HW blinking
available on RX1950

Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This commit is contained in:
Vasily Khoruzhick
2011-01-06 21:52:52 +02:00
committed by Ben Dooks
parent fed7fdbef4
commit 62235dcd2a
1 changed files with 54 additions and 0 deletions
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arch/arm/mach-s3c2440/mach-rx1950.c
+54
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@@ -263,6 +263,52 @@ void rx1950_disable_charger(void)
gpio_direction_output(S3C2410_GPJ(3), 0); gpio_direction_output(S3C2410_GPJ(3), 0);
} }
DEFINE_SPINLOCK(rx1950_blink_spin);
static int rx1950_led_blink_set(unsigned gpio, int state,
unsigned long *delay_on, unsigned long *delay_off)
{
int blink_gpio, check_gpio;
switch (gpio) {
case S3C2410_GPA(6):
blink_gpio = S3C2410_GPA(4);
check_gpio = S3C2410_GPA(3);
break;
case S3C2410_GPA(7):
blink_gpio = S3C2410_GPA(3);
check_gpio = S3C2410_GPA(4);
break;
default:
return -EINVAL;
break;
}
if (delay_on && delay_off && !*delay_on && !*delay_off)
*delay_on = *delay_off = 500;
spin_lock(&rx1950_blink_spin);
switch (state) {
case GPIO_LED_NO_BLINK_LOW:
case GPIO_LED_NO_BLINK_HIGH:
if (!gpio_get_value(check_gpio))
gpio_set_value(S3C2410_GPJ(6), 0);
gpio_set_value(blink_gpio, 0);
gpio_set_value(gpio, state);
break;
case GPIO_LED_BLINK:
gpio_set_value(gpio, 0);
gpio_set_value(S3C2410_GPJ(6), 1);
gpio_set_value(blink_gpio, 1);
break;
}
spin_unlock(&rx1950_blink_spin);
return 0;
}
static struct gpio_led rx1950_leds_desc[] = { static struct gpio_led rx1950_leds_desc[] = {
{ {
.name = "Green", .name = "Green",
@@ -287,6 +333,7 @@ static struct gpio_led rx1950_leds_desc[] = {
static struct gpio_led_platform_data rx1950_leds_pdata = { static struct gpio_led_platform_data rx1950_leds_pdata = {
.num_leds = ARRAY_SIZE(rx1950_leds_desc), .num_leds = ARRAY_SIZE(rx1950_leds_desc),
.leds = rx1950_leds_desc, .leds = rx1950_leds_desc,
.gpio_blink_set = rx1950_led_blink_set,
}; };
static struct platform_device rx1950_leds = { static struct platform_device rx1950_leds = {
@@ -755,6 +802,13 @@ static void __init rx1950_init_machine(void)
WARN_ON(gpio_request(S3C2410_GPB(1), "LCD power")); WARN_ON(gpio_request(S3C2410_GPB(1), "LCD power"));
WARN_ON(gpio_request(S3C2410_GPA(3), "Red blink"));
WARN_ON(gpio_request(S3C2410_GPA(4), "Green blink"));
WARN_ON(gpio_request(S3C2410_GPJ(6), "LED blink"));
gpio_direction_output(S3C2410_GPA(3), 0);
gpio_direction_output(S3C2410_GPA(4), 0);
gpio_direction_output(S3C2410_GPJ(6), 0);
platform_add_devices(rx1950_devices, ARRAY_SIZE(rx1950_devices)); platform_add_devices(rx1950_devices, ARRAY_SIZE(rx1950_devices));
i2c_register_board_info(0, rx1950_i2c_devices, i2c_register_board_info(0, rx1950_i2c_devices,