of_gpio: add support of of_gpio_named_count to be able to count named gpio
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: devicetree-discuss@lists.ozlabs.org
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
diff --git a/drivers/of/gpio.c b/drivers/of/gpio.c
index 7e62d15..e034b38 100644
--- a/drivers/of/gpio.c
+++ b/drivers/of/gpio.c
@@ -78,8 +78,9 @@
EXPORT_SYMBOL(of_get_named_gpio_flags);
/**
- * of_gpio_count - Count GPIOs for a device
+ * of_gpio_named_count - Count GPIOs for a device
* @np: device node to count GPIOs for
+ * @propname: property name containing gpio specifier(s)
*
* The function returns the count of GPIOs specified for a node.
*
@@ -93,14 +94,14 @@
* defines four GPIOs (so this function will return 4), two of which
* are not specified.
*/
-unsigned int of_gpio_count(struct device_node *np)
+unsigned int of_gpio_named_count(struct device_node *np, const char* propname)
{
unsigned int cnt = 0;
do {
int ret;
- ret = of_parse_phandle_with_args(np, "gpios", "#gpio-cells",
+ ret = of_parse_phandle_with_args(np, propname, "#gpio-cells",
cnt, NULL);
/* A hole in the gpios = <> counts anyway. */
if (ret < 0 && ret != -EEXIST)
@@ -109,7 +110,7 @@
return cnt;
}
-EXPORT_SYMBOL(of_gpio_count);
+EXPORT_SYMBOL(of_gpio_named_count);
/**
* of_gpio_simple_xlate - translate gpio_spec to the GPIO number and flags