From: Thierry Reding <treding@xxxxxxxxxx>
Add descriptions for missing fields and fix up some parameter references
to match the code.
Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>
---
drivers/gpio/gpiolib-of.c | 7 +++----
include/linux/gpio/driver.h | 19 +++++++++++++++++++
2 files changed, 22 insertions(+), 4 deletions(-)
diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c
index 54ce8dc58ad0..9c1b8a5d2f33 100644
--- a/drivers/gpio/gpiolib-of.c
+++ b/drivers/gpio/gpiolib-of.c
@@ -273,14 +273,13 @@ static int of_gpiochip_scan_gpios(struct gpio_chip *chip)
}
/**
- * of_gpio_simple_xlate - translate gpio_spec to the GPIO number and flags
+ * of_gpio_simple_xlate - translate gpiospec to the GPIO number and flags
* @gc: pointer to the gpio_chip structure
- * @np: device node of the GPIO chip
- * @gpio_spec: gpio specifier as found in the device tree
+ * @gpiospec: GPIO specifier as found in the device tree
* @flags: a flags pointer to fill in
*
* This is simple translation function, suitable for the most 1:1 mapped
- * gpio chips. This function performs only one sanity check: whether gpio
+ * GPIO chips. This function performs only one sanity check: whether GPIO
* is less than ngpios (that is specified in the gpio_chip).
*/
int of_gpio_simple_xlate(struct gpio_chip *gc,
diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h
index ad4150d075c3..fe66c9306caf 100644
--- a/include/linux/gpio/driver.h
+++ b/include/linux/gpio/driver.h
@@ -180,8 +180,27 @@ struct gpio_chip {
* If CONFIG_OF is enabled, then all GPIO controllers described in the
* device tree automatically may have an OF translation
*/
+
+ /**
+ * @of_node:
+ *
+ * Pointer to a device tree node representing this GPIO controller.
+ */
struct device_node *of_node;
+
+ /**
+ * @of_gpio_n_cells:
+ *
+ * Number of cells used to form the GPIO specifier.
+ */
int of_gpio_n_cells;
+
+ /**
+ * @of_xlate:
+ *
+ * Callback to translate a device tree GPIO specifier into a chip-
+ * relative GPIO number and flags.
+ */
int (*of_xlate)(struct gpio_chip *gc,
const struct of_phandle_args *gpiospec, u32 *flags);
#endif
--
2.13.3
--
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