leds: leds-gpio for ngw100
Add GPIO leds to the NGW100 platform and its defconfig.
Access through /sys/class/leds/{a,b,sys}/* files; one
defaults to a heartbeat.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
diff --git a/arch/avr32/boards/atngw100/setup.c b/arch/avr32/boards/atngw100/setup.c
index 6c4dc0a..2edcecd 100644
--- a/arch/avr32/boards/atngw100/setup.c
+++ b/arch/avr32/boards/atngw100/setup.c
@@ -13,6 +13,7 @@
#include <linux/linkage.h>
#include <linux/platform_device.h>
#include <linux/types.h>
+#include <linux/leds.h>
#include <linux/spi/spi.h>
#include <asm/io.h>
@@ -21,6 +22,7 @@
#include <asm/arch/at32ap7000.h>
#include <asm/arch/board.h>
#include <asm/arch/init.h>
+#include <asm/arch/portmux.h>
/* Initialized by bootloader-specific startup code. */
struct tag *bootloader_tags __initdata;
@@ -100,8 +102,31 @@
at32_setup_serial_console(0);
}
+static const struct gpio_led ngw_leds[] = {
+ { .name = "sys", .gpio = GPIO_PIN_PA(16), .active_low = 1,
+ .default_trigger = "heartbeat",
+ },
+ { .name = "a", .gpio = GPIO_PIN_PA(19), .active_low = 1, },
+ { .name = "b", .gpio = GPIO_PIN_PE(19), .active_low = 1, },
+};
+
+static const struct gpio_led_platform_data ngw_led_data = {
+ .num_leds = ARRAY_SIZE(ngw_leds),
+ .leds = (void *) ngw_leds,
+};
+
+static struct platform_device ngw_gpio_leds = {
+ .name = "leds-gpio",
+ .id = -1,
+ .dev = {
+ .platform_data = (void *) &ngw_led_data,
+ }
+};
+
static int __init atngw100_init(void)
{
+ unsigned i;
+
/*
* ATNGW100 uses 16-bit SDRAM interface, so we don't need to
* reserve any pins for it.
@@ -116,6 +141,12 @@
at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
+ for (i = 0; i < ARRAY_SIZE(ngw_leds); i++) {
+ at32_select_gpio(ngw_leds[i].gpio,
+ AT32_GPIOF_OUTPUT | AT32_GPIOF_HIGH);
+ }
+ platform_device_register(&ngw_gpio_leds);
+
return 0;
}
postcore_initcall(atngw100_init);
diff --git a/arch/avr32/configs/atngw100_defconfig b/arch/avr32/configs/atngw100_defconfig
index 49493ad..b799a68 100644
--- a/arch/avr32/configs/atngw100_defconfig
+++ b/arch/avr32/configs/atngw100_defconfig
@@ -712,7 +712,21 @@
#
# LED devices
#
-# CONFIG_NEW_LEDS is not set
+CONFIG_NEW_LEDS=y
+CONFIG_LEDS_CLASS=y
+
+#
+# LED drivers
+#
+CONFIG_LEDS_GPIO=y
+
+#
+# LED Triggers
+#
+CONFIG_LEDS_TRIGGERS=y
+CONFIG_LEDS_TRIGGER_TIMER=y
+CONFIG_LEDS_TRIGGER_HEARTBEAT=y
+
#
# LED drivers