diff options
| author | Joel A Fernandes <agnel.joel@gmail.com> | 2011-08-11 23:16:53 -0500 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2011-09-04 11:36:22 +0200 |
| commit | b8bc8973a1830bb92e7a9bf3356dc209afb2f4e8 (patch) | |
| tree | 7c9bd231a53779327ec4fd06afaff2f61ad7f885 /board/ti/beagle | |
| parent | d604cda34ab2190fb07a1134bb488105e1a2f9c3 (diff) | |
led: Remove state-saving of led for toggle functionality and add toggle option to led command
* Read the led output state from GPIO instead saving state in memory when it is [re]set
* Added a toggle option to the led command
Previous discussion:
http://lists.denx.de/pipermail/u-boot/2011-May/093068.html
Changes since v1:
Fixed checkpatch errors
Signed-off-by: Joel A Fernandes <agnel.joel@gmail.com>
Signed-off-by: Jason Kridner <jkridner@beagleboard.org>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
Diffstat (limited to 'board/ti/beagle')
| -rw-r--r-- | board/ti/beagle/led.c | 28 |
1 files changed, 12 insertions, 16 deletions
diff --git a/board/ti/beagle/led.c b/board/ti/beagle/led.c index d3de51f2f5..f08c08ad88 100644 --- a/board/ti/beagle/led.c +++ b/board/ti/beagle/led.c @@ -24,8 +24,6 @@ #include <asm/arch/sys_proto.h> #include <asm/arch/gpio.h> -static unsigned int saved_state[2] = {STATUS_LED_OFF, STATUS_LED_OFF}; - /* GPIO pins for the LEDs */ #define BEAGLE_LED_USR0 150 #define BEAGLE_LED_USR1 149 @@ -49,22 +47,22 @@ void __led_init (led_id_t mask, int state) void __led_toggle (led_id_t mask) { + int state, toggle_gpio = 0; #ifdef STATUS_LED_BIT - if (STATUS_LED_BIT & mask) { - if (STATUS_LED_ON == saved_state[0]) - __led_set(STATUS_LED_BIT, 0); - else - __led_set(STATUS_LED_BIT, 1); - } + if (!toggle_gpio && STATUS_LED_BIT & mask) + toggle_gpio = BEAGLE_LED_USR0; #endif #ifdef STATUS_LED_BIT1 - if (STATUS_LED_BIT1 & mask) { - if (STATUS_LED_ON == saved_state[1]) - __led_set(STATUS_LED_BIT1, 0); - else - __led_set(STATUS_LED_BIT1, 1); - } + if (!toggle_gpio && STATUS_LED_BIT1 & mask) + toggle_gpio = BEAGLE_LED_USR1; #endif + if (toggle_gpio) { + if (!omap_request_gpio(toggle_gpio)) { + omap_set_gpio_direction(toggle_gpio, 0); + state = omap_get_gpio_dataout(toggle_gpio); + omap_set_gpio_dataout(toggle_gpio, !state); + } + } } void __led_set (led_id_t mask, int state) @@ -75,7 +73,6 @@ void __led_set (led_id_t mask, int state) omap_set_gpio_direction(BEAGLE_LED_USR0, 0); omap_set_gpio_dataout(BEAGLE_LED_USR0, state); } - saved_state[0] = state; } #endif #ifdef STATUS_LED_BIT1 @@ -84,7 +81,6 @@ void __led_set (led_id_t mask, int state) omap_set_gpio_direction(BEAGLE_LED_USR1, 0); omap_set_gpio_dataout(BEAGLE_LED_USR1, state); } - saved_state[1] = state; } #endif } |