arm: ep93xx: use gpio_led_register_device

Use gpio_led_register_device to register the two leds
connected to the ep93xx.

Since this is a common feature for all ep93xx based boards,
create a new Kconfig option, EP93XX_SOC_COMMON, to select
the LEDS_GPIO_REGISTER feature.

The struct gpio_led and struct gpio_led_platform_data variables
have been changed to const struct because of:

commit 9517f925f2eb9ffca78b3f0f9389fc675bcb572c
	leds: make *struct gpio_led_platform_data.leds const

They have also been marked as __initconst because the helper
function gpio_led_register_device makes a deep copy of the
platform data to allow it to live in init memory:

commit 4440673a95e63ad888a41db596edaa0c55d3a332
	leds: provide helper to register "leds-gpio" devices

Signed-off-by: Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Ryan Mallon <rmallon@gmail.com>

2 files changed, 9 insertions, 12 deletions

diff --git a/arch/arm/mach-ep93xx/Kconfig b/arch/arm/mach-ep93xx/Kconfig
index 97a249395b5a..fe3c1fa5462b 100644
--- a/arch/arm/mach-ep93xx/Kconfig
+++ b/arch/arm/mach-ep93xx/Kconfig
@@ -2,6 +2,11 @@ if ARCH_EP93XX
 
 menu "Cirrus EP93xx Implementation Options"
 
+config EP93XX_SOC_COMMON
+        bool
+        default y
+        select LEDS_GPIO_REGISTER
+
 config CRUNCH
         bool "Support for MaverickCrunch"
         help
diff --git a/arch/arm/mach-ep93xx/core.c b/arch/arm/mach-ep93xx/core.c
index e4a64d2f8955..66b1494f23a6 100644
--- a/arch/arm/mach-ep93xx/core.c
+++ b/arch/arm/mach-ep93xx/core.c
@@ -482,7 +482,7 @@ void __init ep93xx_register_spi(struct ep93xx_spi_info *info,
 /*************************************************************************
  * EP93xx LEDs
  *************************************************************************/
-static struct gpio_led ep93xx_led_pins[] = {
+static const struct gpio_led ep93xx_led_pins[] __initconst = {
         {
                 .name   = "platform:grled",
                 .gpio   = EP93XX_GPIO_LINE_GRLED,
@@ -492,20 +492,11 @@ static struct gpio_led ep93xx_led_pins[] = {
         },
 };
 
-static struct gpio_led_platform_data ep93xx_led_data = {
+static const struct gpio_led_platform_data ep93xx_led_data __initconst = {
         .num_leds       = ARRAY_SIZE(ep93xx_led_pins),
         .leds           = ep93xx_led_pins,
 };
 
-static struct platform_device ep93xx_leds = {
-        .name           = "leds-gpio",
-        .id             = -1,
-        .dev            = {
-                .platform_data  = &ep93xx_led_data,
-        },
-};
-
-
 /*************************************************************************
  * EP93xx pwm peripheral handling
  *************************************************************************/
@@ -827,8 +818,9 @@ void __init ep93xx_init_devices(void)
 
         platform_device_register(&ep93xx_rtc_device);
         platform_device_register(&ep93xx_ohci_device);
-        platform_device_register(&ep93xx_leds);
         platform_device_register(&ep93xx_wdt_device);
+
+        gpio_led_register_device(-1, &ep93xx_led_data);
 }
 
 void ep93xx_restart(char mode, const char *cmd)