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authorArnaud Patard (Rtp) <arnaud.patard@rtp-net.org>2012-04-18 23:16:40 +0200
committerJason Cooper <jason@lakedaemon.net>2012-05-15 03:12:14 +0000
commitff3e660b5a881b401b2b6735aa5334f433237dcb (patch)
tree275ddcb9365d4cc6ac7320b18a29b5d57fe2ada4 /arch/arm/plat-orion
parent92a486eabefadca1169fbf15d737feeaf2bda844 (diff)
downloadlinux-ff3e660b5a881b401b2b6735aa5334f433237dcb.tar.bz2
orion/kirkwood: create a generic function for gpio led blinking
dns323 and (at least) iconnect platforms are using hw led blinking, so, instead of having 2 identicals .gpio_blink_set gpio-led hooks, move dns323 code into gpio.c Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org> Tested-By: Adam Baker <linux@baker-net.org.uk> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Diffstat (limited to 'arch/arm/plat-orion')
-rw-r--r--arch/arm/plat-orion/gpio.c23
-rw-r--r--arch/arm/plat-orion/include/plat/gpio.h2
2 files changed, 25 insertions, 0 deletions
diff --git a/arch/arm/plat-orion/gpio.c b/arch/arm/plat-orion/gpio.c
index d3401e77ff3d..af95af257301 100644
--- a/arch/arm/plat-orion/gpio.c
+++ b/arch/arm/plat-orion/gpio.c
@@ -16,6 +16,7 @@
#include <linux/bitops.h>
#include <linux/io.h>
#include <linux/gpio.h>
+#include <linux/leds.h>
/*
* GPIO unit register offsets.
@@ -295,6 +296,28 @@ void orion_gpio_set_blink(unsigned pin, int blink)
}
EXPORT_SYMBOL(orion_gpio_set_blink);
+#define ORION_BLINK_HALF_PERIOD 100 /* ms */
+
+int orion_gpio_led_blink_set(unsigned gpio, int state,
+ unsigned long *delay_on, unsigned long *delay_off)
+{
+
+ if (delay_on && delay_off && !*delay_on && !*delay_off)
+ *delay_on = *delay_off = ORION_BLINK_HALF_PERIOD;
+
+ switch (state) {
+ case GPIO_LED_NO_BLINK_LOW:
+ case GPIO_LED_NO_BLINK_HIGH:
+ orion_gpio_set_blink(gpio, 0);
+ gpio_set_value(gpio, state);
+ break;
+ case GPIO_LED_BLINK:
+ orion_gpio_set_blink(gpio, 1);
+ }
+ return 0;
+}
+EXPORT_SYMBOL_GPL(orion_gpio_led_blink_set);
+
/*****************************************************************************
* Orion GPIO IRQ
diff --git a/arch/arm/plat-orion/include/plat/gpio.h b/arch/arm/plat-orion/include/plat/gpio.h
index 3abf30428bee..bec0c98ce41f 100644
--- a/arch/arm/plat-orion/include/plat/gpio.h
+++ b/arch/arm/plat-orion/include/plat/gpio.h
@@ -19,6 +19,8 @@
*/
void orion_gpio_set_unused(unsigned pin);
void orion_gpio_set_blink(unsigned pin, int blink);
+int orion_gpio_led_blink_set(unsigned gpio, int state,
+ unsigned long *delay_on, unsigned long *delay_off);
#define GPIO_INPUT_OK (1 << 0)
#define GPIO_OUTPUT_OK (1 << 1)