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gpiolib: introduce fwnode_gpiod_get_index()

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This introduces fwnode_gpiod_get_index() that iterates through common gpio
suffixes when trying to locate a GPIO within a given firmware node.

We also switch devm_fwnode_gpiod_get_index() to call
fwnode_gpiod_get_index() instead of iterating through GPIO suffixes on
its own.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Link: https://lore.kernel.org/r/20190913032240.50333-3-dmitry.torokhov@gmail.com
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Dmitry Torokhov 2019-09-12 20:22:39 -07:00 • committed by Linus Walleij
parent 2d2f116d69
commit 13949fa9da
3 changed files with 62 additions and 15 deletions
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13
include/linux/gpio/consumer.h
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@ -176,6 +176,10 @@ struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode,
const char *propname, int index,
enum gpiod_flags dflags,
const char *label);
struct gpio_desc *fwnode_gpiod_get_index(struct fwnode_handle *fwnode,
const char *con_id, int index,
enum gpiod_flags flags,
const char *label);
struct gpio_desc *devm_fwnode_gpiod_get_index(struct device *dev,
struct fwnode_handle *child,
const char *con_id, int index,
@ -531,6 +535,15 @@ struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode,
return ERR_PTR(-ENOSYS);
}
static inline
struct gpio_desc *fwnode_gpiod_get_index(struct fwnode_handle *fwnode,
const char *con_id, int index,
enum gpiod_flags flags,
const char *label)
{
return ERR_PTR(-ENOSYS);
}
static inline
struct gpio_desc *devm_fwnode_gpiod_get_index(struct device *dev,
struct fwnode_handle *fwnode,