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| author | Bernhard Nortmann <bernhard.nortmann@web.de> | 2015-08-21 15:13:21 +0200 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2015-10-24 13:50:02 -0400 |
| commit | 13cfbe51357bf3275b14046e0031ea2b7fdaf8ce (patch) | |
| tree | 6b2432f23b0ad1f8941b56157a3d9a6d693f9542 /drivers/misc | |
| parent | d375ebbcb655ce8f9012cf93db347d3ced66eaac (diff) | |
| download | u-boot-13cfbe51357bf3275b14046e0031ea2b7fdaf8ce.tar.gz | |
allow LED initialization without STATUS_LED_BOOT
For current U-Boot to initialize status LEDs via status_led_init(), it
is required to have both CONFIG_STATUS_LED and STATUS_LED_BOOT defined.
This may be a particular concern with GPIO LEDs, where __led_init() is
required to correctly set up the GPIO (gpio_request and
gpio_direction_output). Without STATUS_LED_BOOT the initialization isn't
called, which could leave the user with a non-functional "led" command -
due to the fact that the LED routines in gpio_led.c use gpio_set_value()
just fine, but the GPIO never got set up properly in the first place.
I think having CONFIG_STATUS_LED is sufficient to justify a
corresponding call to status_led_init(), even with no STATUS_LED_BOOT
defined. To do so, common/board_r.c needs call that routine, so it now
is exposed via status_led.h.
Signed-off-by: Bernhard Nortmann <bernhard.nortmann@web.de>
[trini: Add dummy __led_init to pca9551_led.c]
Signed-off-by: Tom Rini <trini@konsulko.com>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/pca9551_led.c | 6 | ||||
| -rw-r--r-- | drivers/misc/status_led.c | 2 |
2 files changed, 6 insertions, 2 deletions
diff --git a/drivers/misc/pca9551_led.c b/drivers/misc/pca9551_led.c index d4034f6735..4da031985f 100644 --- a/drivers/misc/pca9551_led.c +++ b/drivers/misc/pca9551_led.c @@ -116,8 +116,12 @@ static int pca9551_led_set_blink_rate(int idx, struct pca9551_blink_rate rate) } /* - * Functions referenced by cmd_led.c + * Functions referenced by cmd_led.c or status_led.c */ +void __led_init(led_id_t id, int state) +{ +} + void __led_set(led_id_t mask, int state) { if (state == STATUS_LED_OFF) diff --git a/drivers/misc/status_led.c b/drivers/misc/status_led.c index 9869d98c10..31e88319d1 100644 --- a/drivers/misc/status_led.c +++ b/drivers/misc/status_led.c @@ -73,7 +73,7 @@ led_dev_t led_dev[] = { static int status_led_init_done = 0; -static void status_led_init (void) +void status_led_init(void) { led_dev_t *ld; int i; |