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path: root/drivers/gpio/devres.c
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Diffstat (limited to 'drivers/gpio/devres.c')
-rw-r--r--drivers/gpio/devres.c32
1 files changed, 21 insertions, 11 deletions
diff --git a/drivers/gpio/devres.c b/drivers/gpio/devres.c
index b760cbbb41d8..7031eea165c9 100644
--- a/drivers/gpio/devres.c
+++ b/drivers/gpio/devres.c
@@ -11,7 +11,7 @@
*
* This file is based on kernel/irq/devres.c
*
- * Copyright (c) 2011 John Crispin <blogic@openwrt.org>
+ * Copyright (c) 2011 John Crispin <john@phrozen.org>
*/
#include <linux/module.h>
@@ -21,6 +21,8 @@
#include <linux/device.h>
#include <linux/gfp.h>
+#include "gpiolib.h"
+
static void devm_gpiod_release(struct device *dev, void *res)
{
struct gpio_desc **desc = res;
@@ -123,19 +125,26 @@ struct gpio_desc *__must_check devm_gpiod_get_index(struct device *dev,
EXPORT_SYMBOL(devm_gpiod_get_index);
/**
- * devm_get_gpiod_from_child - get a GPIO descriptor from a device's child node
+ * devm_fwnode_get_index_gpiod_from_child - get a GPIO descriptor from a
+ * device's child node
* @dev: GPIO consumer
* @con_id: function within the GPIO consumer
+ * @index: index of the GPIO to obtain in the consumer
* @child: firmware node (child of @dev)
+ * @flags: GPIO initialization flags
*
* GPIO descriptors returned from this function are automatically disposed on
* driver detach.
+ *
+ * On successfull request the GPIO pin is configured in accordance with
+ * provided @flags.
*/
-struct gpio_desc *devm_get_gpiod_from_child(struct device *dev,
- const char *con_id,
- struct fwnode_handle *child)
+struct gpio_desc *devm_fwnode_get_index_gpiod_from_child(struct device *dev,
+ const char *con_id, int index,
+ struct fwnode_handle *child,
+ enum gpiod_flags flags,
+ const char *label)
{
- static const char * const suffixes[] = { "gpios", "gpio" };
char prop_name[32]; /* 32 is max size of property name */
struct gpio_desc **dr;
struct gpio_desc *desc;
@@ -146,15 +155,16 @@ struct gpio_desc *devm_get_gpiod_from_child(struct device *dev,
if (!dr)
return ERR_PTR(-ENOMEM);
- for (i = 0; i < ARRAY_SIZE(suffixes); i++) {
+ for (i = 0; i < ARRAY_SIZE(gpio_suffixes); i++) {
if (con_id)
snprintf(prop_name, sizeof(prop_name), "%s-%s",
- con_id, suffixes[i]);
+ con_id, gpio_suffixes[i]);
else
snprintf(prop_name, sizeof(prop_name), "%s",
- suffixes[i]);
+ gpio_suffixes[i]);
- desc = fwnode_get_named_gpiod(child, prop_name);
+ desc = fwnode_get_named_gpiod(child, prop_name, index, flags,
+ label);
if (!IS_ERR(desc) || (PTR_ERR(desc) != -ENOENT))
break;
}
@@ -168,7 +178,7 @@ struct gpio_desc *devm_get_gpiod_from_child(struct device *dev,
return desc;
}
-EXPORT_SYMBOL(devm_get_gpiod_from_child);
+EXPORT_SYMBOL(devm_fwnode_get_index_gpiod_from_child);
/**
* devm_gpiod_get_index_optional - Resource-managed gpiod_get_index_optional()