diff options
author | Simon Glass <sjg@chromium.org> | 2015-04-15 03:03:20 (GMT) |
---|---|---|
committer | Tom Warren <twarren@nvidia.com> | 2015-05-13 16:24:06 (GMT) |
commit | 962f5caf600c54f4103bfa6b31fa2fb4e8aaacb9 (patch) | |
tree | fc9cb3eac617e65544c493b0a948bf752087b235 /include | |
parent | 3d7cf4192f045d9003c80bc937b18a6169eabbcf (diff) | |
download | u-boot-fsl-qoriq-962f5caf600c54f4103bfa6b31fa2fb4e8aaacb9.tar.xz |
dm: gpio: Add error handling and a function to claim vector GPIOs
gpio_get_values_as_int() should return an error if something goes wrong.
Also provide gpio_claim_vector(), a function to request the GPIOs and set
them to input mode. Otherwise callers have to do this themselves.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Diffstat (limited to 'include')
-rw-r--r-- | include/asm-generic/gpio.h | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h index 3b96b82..4752ea4 100644 --- a/include/asm-generic/gpio.h +++ b/include/asm-generic/gpio.h @@ -336,15 +336,24 @@ int gpio_lookup_name(const char *name, struct udevice **devp, unsigned int *offsetp, unsigned int *gpiop); /** - * get_gpios() - Turn the values of a list of GPIOs into an integer + * gpio_get_values_as_int() - Turn the values of a list of GPIOs into an int * * This puts the value of the first GPIO into bit 0, the second into bit 1, * etc. then returns the resulting integer. * * @gpio_list: List of GPIOs to collect - * @return resulting integer value + * @return resulting integer value, or -ve on error */ -unsigned gpio_get_values_as_int(const int *gpio_list); +int gpio_get_values_as_int(const int *gpio_list); + +/** + * gpio_claim_vector() - claim a number of GPIOs for input + * + * @gpio_num_array: array of gpios to claim, terminated by -1 + * @fmt: format string for GPIO names, e.g. "board_id%d" + * @return 0 if OK, -ve on error + */ +int gpio_claim_vector(const int *gpio_num_array, const char *fmt); /** * gpio_request_by_name() - Locate and request a GPIO by name |