diff options
| author | Simon Glass <sjg@chromium.org> | 2014-10-04 11:29:49 -0600 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2014-10-23 19:29:52 -0600 |
| commit | d44f597b12b8f8099c3c52c3eb09540966cafe79 (patch) | |
| tree | aeecc26ed1a0938d0e567b08af389b63088d4664 /drivers/gpio | |
| parent | 4b8f11c2cc1dc23cf721073e6440c4e151b89bdd (diff) | |
| download | u-boot-imx-d44f597b12b8f8099c3c52c3eb09540966cafe79.zip u-boot-imx-d44f597b12b8f8099c3c52c3eb09540966cafe79.tar.gz u-boot-imx-d44f597b12b8f8099c3c52c3eb09540966cafe79.tar.bz2 | |
dm: gpio: Add gpio_requestf() helper for printf() strings
Add a helper which permits a printf()-style format string for the requester
string.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpio-uclass.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-uclass.c b/drivers/gpio/gpio-uclass.c index 6367093..45e9a5a 100644 --- a/drivers/gpio/gpio-uclass.c +++ b/drivers/gpio/gpio-uclass.c @@ -131,6 +131,27 @@ int gpio_request(unsigned gpio, const char *label) } /** + * gpio_requestf() - [COMPAT] Request GPIO + * @gpio: GPIO number + * @fmt: Format string for the requested GPIO + * @...: Arguments for the printf() format string + * + * This function implements the API that's compatible with current + * GPIO API used in U-Boot. The request is forwarded to particular + * GPIO driver. Returns 0 on success, negative value on error. + */ +int gpio_requestf(unsigned gpio, const char *fmt, ...) +{ + va_list args; + char buf[40]; + + va_start(args, fmt); + vscnprintf(buf, sizeof(buf), fmt, args); + va_end(args); + return gpio_request(gpio, buf); +} + +/** * gpio_free() - [COMPAT] Relinquish GPIO * gpio: GPIO number * |