ARM: OMAP: h4 must have blinky leds!!

This adds generic support for the "debug board" LEDs used by most of
TI's OMAP reference boards, and board-specific support for the H4.

It's derived from the not-as-generic stuff used by OMAP1 H2/H3/P2.
Those should be able to switch easily to this version, and clean up
some of the omap1-specific code.

In addition to H4 support, one key improvement is supporting not just
the "old" ARM debug LED API (with timer and idle LEDs, plus four that
can be handy for kernel debugging), but it also supports the "new"
generic LED API (most useful for usermode stuff IMO).  Either or both
APIs can be enabled.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

2 files changed, 15 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig
index aab97ccf1e63..2a1aca7a6371 100644
--- a/arch/arm/mach-omap2/Kconfig
+++ b/arch/arm/mach-omap2/Kconfig
@@ -20,6 +20,7 @@ config MACH_OMAP_GENERIC
 config MACH_OMAP_H4
         bool "OMAP 2420 H4 board"
         depends on ARCH_OMAP2 && ARCH_OMAP24XX
+        select OMAP_DEBUG_LEDS if LEDS || LEDS_OMAP_DEBUG
 
 config MACH_OMAP_APOLLON
         bool "OMAP 2420 Apollon board"
diff --git a/arch/arm/mach-omap2/board-h4.c b/arch/arm/mach-omap2/board-h4.c
index 1e7ed6d22ca9..452193f01531 100644
--- a/arch/arm/mach-omap2/board-h4.c
+++ b/arch/arm/mach-omap2/board-h4.c
@@ -266,12 +266,26 @@ static struct platform_device h4_lcd_device = {
         .id             = -1,
 };
 
+static struct resource h4_led_resources[] = {
+        [0] = {
+                .flags  = IORESOURCE_MEM,
+        },
+};
+
+static struct platform_device h4_led_device = {
+        .name           = "omap_dbg_led",
+        .id             = -1,
+        .num_resources  = ARRAY_SIZE(h4_led_resources),
+        .resource       = h4_led_resources,
+};
+
 static struct platform_device *h4_devices[] __initdata = {
         &h4_smc91x_device,
         &h4_flash_device,
         &h4_irda_device,
         &h4_kp_device,
         &h4_lcd_device,
+        &h4_led_device,
 };
 
 static inline void __init h4_init_smc91x(void)