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| author | Mike Frysinger <vapier@gentoo.org> | 2011-05-10 07:01:21 +0000 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2011-07-26 16:47:39 +0200 |
| commit | 9146d13821a20c49703e1f8f7e4a4f028678883d (patch) | |
| tree | 2ebc8611bc6d3e706f9ce50e4354b7b19d6ec1f3 | |
| parent | 7b826c2f3510eaf185c7b4b0d709b9e766831bd6 (diff) | |
| download | u-boot-imx-9146d13821a20c49703e1f8f7e4a4f028678883d.zip u-boot-imx-9146d13821a20c49703e1f8f7e4a4f028678883d.tar.gz u-boot-imx-9146d13821a20c49703e1f8f7e4a4f028678883d.tar.bz2 | |
post: add gpio hotkey support
Now that we have the generic GPIO layer, we can easily provide a common
implementation for the post_hotkeys_pressed() function based on it.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| -rw-r--r-- | post/post.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/post/post.c b/post/post.c index 1b7f2aa..ecea1e1 100644 --- a/post/post.c +++ b/post/post.c @@ -26,6 +26,10 @@ #include <watchdog.h> #include <post.h> +#ifdef CONFIG_SYS_POST_HOTKEYS_GPIO +#include <asm/gpio.h> +#endif + #ifdef CONFIG_LOGBUFFER #include <logbuff.h> #endif @@ -68,6 +72,23 @@ int post_init_f (void) */ int __post_hotkeys_pressed(void) { +#ifdef CONFIG_SYS_POST_HOTKEYS_GPIO + int ret; + unsigned gpio = CONFIG_SYS_POST_HOTKEYS_GPIO; + + ret = gpio_request(gpio, "hotkeys"); + if (ret) { + printf("POST: gpio hotkey request failed\n"); + return 0; + } + + gpio_direction_input(gpio); + ret = gpio_get_value(gpio); + gpio_free(gpio); + + return ret; +#endif + return 0; /* No hotkeys supported */ } int post_hotkeys_pressed(void) |