diff options
| author | Simon Glass <sjg@chromium.org> | 2021-08-07 16:24:12 +0300 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2021-09-25 18:46:15 +0300 |
| commit | 48609d0789f811014b33e6eefc2c27c99be7fea7 (patch) | |
| tree | a60a6c721d5776859926501269c2a9f08235bb26 /drivers/gpio/gpio-uclass.c | |
| parent | 3e57ad907caa55bab8ba52ef87ddbc5130aede2c (diff) | |
| download | u-boot-48609d0789f811014b33e6eefc2c27c99be7fea7.tar.xz | |
dm: gpio: Add of-platdata support
Add support for accessing GPIOs using of-plata. This uses the same
mechanism as for clocks, but allows use of the xlate() method so that
the driver can interpret the parameters.
Update the condition for GPIO_HOG so that it is not built into SPL,
since it needs SPL_OF_REAL which is not enabled in sandbox_spl.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/gpio/gpio-uclass.c')
| -rw-r--r-- | drivers/gpio/gpio-uclass.c | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/drivers/gpio/gpio-uclass.c b/drivers/gpio/gpio-uclass.c index e0d3ae6f8c..bb2f23241e 100644 --- a/drivers/gpio/gpio-uclass.c +++ b/drivers/gpio/gpio-uclass.c @@ -7,6 +7,7 @@ #include <common.h> #include <dm.h> +#include <dt-structs.h> #include <log.h> #include <dm/devres.h> #include <dm/device_compat.h> @@ -231,7 +232,7 @@ static int gpio_find_and_xlate(struct gpio_desc *desc, return gpio_xlate_offs_flags(desc->dev, desc, args); } -#if defined(CONFIG_GPIO_HOG) +#if CONFIG_IS_ENABLED(GPIO_HOG) struct gpio_hog_priv { struct gpio_desc gpiod; @@ -1226,6 +1227,27 @@ int gpio_get_list_count(struct udevice *dev, const char *list_name) } #endif /* OF_PLATDATA */ +#if CONFIG_IS_ENABLED(OF_PLATDATA) +int gpio_request_by_phandle(struct udevice *dev, + const struct phandle_2_arg *cells, + struct gpio_desc *desc, int flags) +{ + struct ofnode_phandle_args args; + struct udevice *gpio_dev; + const int index = 0; + int ret; + + ret = device_get_by_ofplat_idx(cells->idx, &gpio_dev); + if (ret) + return ret; + args.args[0] = cells->arg[0]; + args.args[1] = cells->arg[1]; + + return gpio_request_tail(ret, NULL, &args, NULL, index, desc, flags, + index > 0, gpio_dev); +} +#endif + int dm_gpio_free(struct udevice *dev, struct gpio_desc *desc) { /* For now, we don't do any checking of dev */ @@ -1430,7 +1452,7 @@ static int gpio_post_bind(struct udevice *dev) } #endif - if (IS_ENABLED(CONFIG_GPIO_HOG)) { + if (CONFIG_IS_ENABLED(OF_REAL) && IS_ENABLED(CONFIG_GPIO_HOG)) { dev_for_each_subnode(node, dev) { if (ofnode_read_bool(node, "gpio-hog")) { const char *name = ofnode_get_name(node); |