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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2021-03-09 12:37:32 +0300
committerBartosz Golaszewski <bgolaszewski@baylibre.com>2021-03-26 16:56:18 +0300
commit944f4b0af9ca0d203ebc0d1426218af372d2d995 (patch)
tree6e40790b4ff115e788a5a75115254fc452748fb0 /drivers/gpio/gpiolib.c
parent67196fea0fcef92b25608882f62f3985bc59f1fe (diff)
downloadlinux-944f4b0af9ca0d203ebc0d1426218af372d2d995.tar.xz
gpiolib: Unify the checks on fwnode type
We have (historically) different approaches how we identify the type of a given fwnode. Let's standardize them across the library code. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Diffstat (limited to 'drivers/gpio/gpiolib.c')
-rw-r--r--drivers/gpio/gpiolib.c28
1 files changed, 13 insertions, 15 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 6367646dce83..14d79c166124 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -3684,11 +3684,12 @@ EXPORT_SYMBOL_GPL(fwnode_gpiod_get_index);
*/
int gpiod_count(struct device *dev, const char *con_id)
{
+ const struct fwnode_handle *fwnode = dev ? dev_fwnode(dev) : NULL;
int count = -ENOENT;
- if (IS_ENABLED(CONFIG_OF) && dev && dev->of_node)
+ if (is_of_node(fwnode))
count = of_gpio_get_count(dev, con_id);
- else if (IS_ENABLED(CONFIG_ACPI) && dev && ACPI_HANDLE(dev))
+ else if (is_acpi_node(fwnode))
count = acpi_gpio_count(dev, con_id);
if (count < 0)
@@ -3826,18 +3827,17 @@ struct gpio_desc *__must_check gpiod_get_index(struct device *dev,
int ret;
/* Maybe we have a device name, maybe not */
const char *devname = dev ? dev_name(dev) : "?";
+ const struct fwnode_handle *fwnode = dev ? dev_fwnode(dev) : NULL;
dev_dbg(dev, "GPIO lookup for consumer %s\n", con_id);
- if (dev) {
- /* Using device tree? */
- if (IS_ENABLED(CONFIG_OF) && dev->of_node) {
- dev_dbg(dev, "using device tree for GPIO lookup\n");
- desc = of_find_gpio(dev, con_id, idx, &lookupflags);
- } else if (ACPI_COMPANION(dev)) {
- dev_dbg(dev, "using ACPI for GPIO lookup\n");
- desc = acpi_find_gpio(dev, con_id, idx, &flags, &lookupflags);
- }
+ /* Using device tree? */
+ if (is_of_node(fwnode)) {
+ dev_dbg(dev, "using device tree for GPIO lookup\n");
+ desc = of_find_gpio(dev, con_id, idx, &lookupflags);
+ } else if (is_acpi_node(fwnode)) {
+ dev_dbg(dev, "using ACPI for GPIO lookup\n");
+ desc = acpi_find_gpio(dev, con_id, idx, &flags, &lookupflags);
}
/*
@@ -3921,9 +3921,6 @@ struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode,
struct gpio_desc *desc = ERR_PTR(-ENODEV);
int ret;
- if (!fwnode)
- return ERR_PTR(-EINVAL);
-
if (is_of_node(fwnode)) {
desc = gpiod_get_from_of_node(to_of_node(fwnode),
propname, index,
@@ -3939,7 +3936,8 @@ struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode,
acpi_gpio_update_gpiod_flags(&dflags, &info);
acpi_gpio_update_gpiod_lookup_flags(&lflags, &info);
- }
+ } else
+ return ERR_PTR(-EINVAL);
/* Currently only ACPI takes this path */
ret = gpiod_request(desc, label);