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authorBryan Wu <bryan.wu@canonical.com>2012-03-14 02:07:58 +0800
committerBryan Wu <bryan.wu@canonical.com>2012-08-01 11:22:11 +0800
commit55f5d8ec5aa866f9187a4ef58bfe965487d324b3 (patch)
tree01fd0f76417ae0f939ead5986620a8545940bc60 /arch/arm/mach-pxa/idp.c
parent51891a431354d0b6d0408746f398364b15068d65 (diff)
ARM: mach-pxa: retire custom LED code
Signed-off-by: Bryan Wu <bryan.wu@canonical.com>
Diffstat (limited to 'arch/arm/mach-pxa/idp.c')
-rw-r--r--arch/arm/mach-pxa/idp.c81
1 files changed, 81 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/idp.c b/arch/arm/mach-pxa/idp.c
index 6ff466bd43e8..ae1e9977603e 100644
--- a/arch/arm/mach-pxa/idp.c
+++ b/arch/arm/mach-pxa/idp.c
@@ -191,6 +191,87 @@ static void __init idp_map_io(void)
iotable_init(idp_io_desc, ARRAY_SIZE(idp_io_desc));
}
+/* LEDs */
+#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
+struct idp_led {
+ struct led_classdev cdev;
+ u8 mask;
+};
+
+/*
+ * The triggers lines up below will only be used if the
+ * LED triggers are compiled in.
+ */
+static const struct {
+ const char *name;
+ const char *trigger;
+} idp_leds[] = {
+ { "idp:green", "heartbeat", },
+ { "idp:red", "cpu0", },
+};
+
+static void idp_led_set(struct led_classdev *cdev,
+ enum led_brightness b)
+{
+ struct idp_led *led = container_of(cdev,
+ struct idp_led, cdev);
+ u32 reg = IDP_CPLD_LED_CONTROL;
+
+ if (b != LED_OFF)
+ reg &= ~led->mask;
+ else
+ reg |= led->mask;
+
+ IDP_CPLD_LED_CONTROL = reg;
+}
+
+static enum led_brightness idp_led_get(struct led_classdev *cdev)
+{
+ struct idp_led *led = container_of(cdev,
+ struct idp_led, cdev);
+
+ return (IDP_CPLD_LED_CONTROL & led->mask) ? LED_OFF : LED_FULL;
+}
+
+static int __init idp_leds_init(void)
+{
+ int i;
+
+ if (!machine_is_pxa_idp())
+ return -ENODEV;
+
+ for (i = 0; i < ARRAY_SIZE(idp_leds); i++) {
+ struct idp_led *led;
+
+ led = kzalloc(sizeof(*led), GFP_KERNEL);
+ if (!led)
+ break;
+
+ led->cdev.name = idp_leds[i].name;
+ led->cdev.brightness_set = idp_led_set;
+ led->cdev.brightness_get = idp_led_get;
+ led->cdev.default_trigger = idp_leds[i].trigger;
+
+ if (i == 0)
+ led->mask = IDP_HB_LED;
+ else
+ led->mask = IDP_BUSY_LED;
+
+ if (led_classdev_register(NULL, &led->cdev) < 0) {
+ kfree(led);
+ break;
+ }
+ }
+
+ return 0;
+}
+
+/*
+ * Since we may have triggers on any subsystem, defer registration
+ * until after subsystem_init.
+ */
+fs_initcall(idp_leds_init);
+#endif
MACHINE_START(PXA_IDP, "Vibren PXA255 IDP")
/* Maintainer: Vibren Technologies */