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of/gpio: Add new method for getting gpios under different property names

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This patch adds a new routine, of_get_named_gpio_flags(), which takes the
property name as a parameter rather than assuming "gpios".

of_get_gpio_flags() is modified to call of_get_named_gpio_flags() with "gpios"
as the property parameter.

Signed-off-by: John Bonesio <[email protected]>
[grant.likely: Tidied up whitespace and tweaked kerneldoc comments.]
Signed-off-by: Grant Likely <[email protected]>
This commit is contained in:
John Bonesio 2011-06-27 16:49:57 -07:00 • committed by Grant Likely
commit a6b0919140
2 changed files with 43 additions and 10 deletions
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11
drivers/of/gpio.c
View file

@ -21,8 +21,9 @@
#include <linux/slab.h>
/**
* of_get_gpio_flags - Get a GPIO number and flags to use with GPIO API
* of_get_named_gpio_flags() - Get a GPIO number and flags to use with GPIO API
* @np: device node to get GPIO from
* @propname: property name containing gpio specifier(s)
* @index: index of the GPIO
* @flags: a flags pointer to fill in
*
@ -30,8 +31,8 @@
* value on the error condition. If @flags is not NULL the function also fills
* in flags for the GPIO.
*/
int of_get_gpio_flags(struct device_node *np, int index,
enum of_gpio_flags *flags)
int of_get_named_gpio_flags(struct device_node *np, const char *propname,
int index, enum of_gpio_flags *flags)
{
int ret;
struct device_node *gpio_np;
@ -40,7 +41,7 @@ int of_get_gpio_flags(struct device_node *np, int index,
const void *gpio_spec;
const __be32 *gpio_cells;
ret = of_parse_phandles_with_args(np, "gpios", "#gpio-cells", index,
ret = of_parse_phandles_with_args(np, propname, "#gpio-cells", index,
&gpio_np, &gpio_spec);
if (ret) {
pr_debug("%s: can't parse gpios property\n", __func__);
@ -79,7 +80,7 @@ err0:
pr_debug("%s exited with status %d\n", __func__, ret);
return ret;
}
EXPORT_SYMBOL(of_get_gpio_flags);
EXPORT_SYMBOL(of_get_named_gpio_flags);
/**
* of_gpio_count - Count GPIOs for a device