diff options
| author | Heiko Schocher <hs@denx.de> | 2019-07-17 06:59:51 +0200 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2019-07-29 09:32:10 -0400 |
| commit | 49b10cb4926285b856b207c1f5bb40c75487f08b (patch) | |
| tree | 5fabb5d8f10d8f0ab412d6abbe168dbec7965ff9 /include/asm-generic | |
| parent | 5917d0b877af8d553934c77247f1aa75f2dd048b (diff) | |
| download | u-boot-49b10cb4926285b856b207c1f5bb40c75487f08b.tar.gz | |
gpio: fixes for gpio-hog support
recently added gpio hog patch was "in discussion"
state with Simon Glass. This patch now adds most
of comments from Simon Glass.
Signed-off-by: Heiko Schocher <hs@denx.de>
Diffstat (limited to 'include/asm-generic')
| -rw-r--r-- | include/asm-generic/gpio.h | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h index 37f71e5708..d6cf18744f 100644 --- a/include/asm-generic/gpio.h +++ b/include/asm-generic/gpio.h @@ -352,9 +352,10 @@ int dm_gpio_lookup_name(const char *name, struct gpio_desc *desc); * gpio_hog_lookup_name() - Look up a named GPIO and return the gpio descr. * * @name: Name to look up - * @return: Returns gpio_desc for gpio + * @desc: Returns GPIO description, on success, else NULL + * @return: Returns 0 if OK, else -ENODEV */ -struct gpio_desc *gpio_hog_lookup_name(const char *name); +int gpio_hog_lookup_name(const char *name, struct gpio_desc **desc); /** * gpio_hog_probe_all() - probe all gpio devices with @@ -523,12 +524,13 @@ int gpio_request_list_by_name_nodev(ofnode node, const char *list_name, * gpio_dev_request_index() - request single GPIO from gpio device * * @dev: GPIO device - * @nodename: Name of node + * @nodename: Name of node for which gpio gets requested, used + * for the gpio label name * @list_name: Name of GPIO list (e.g. "board-id-gpios") * @index: Index number of the GPIO in that list use request (0=first) * @flags: GPIOD_* flags - * @dtflags: GPIO flags read from DT - * @desc: GPIO descriotor filled from this function + * @dtflags: GPIO flags read from DT defined see GPIOD_* + * @desc: returns GPIO descriptor filled from this function * @return: return value from gpio_request_tail() */ int gpio_dev_request_index(struct udevice *dev, const char *nodename, |