summaryrefslogtreecommitdiff
path: root/include/linux/gpio/consumer.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/gpio/consumer.h')
-rw-r--r--include/linux/gpio/consumer.h77
1 files changed, 77 insertions, 0 deletions
diff --git a/include/linux/gpio/consumer.h b/include/linux/gpio/consumer.h
index 45afc2dee560..3a7c9ffd5ab9 100644
--- a/include/linux/gpio/consumer.h
+++ b/include/linux/gpio/consumer.h
@@ -16,6 +16,15 @@ struct device;
*/
struct gpio_desc;
+/**
+ * Struct containing an array of descriptors that can be obtained using
+ * gpiod_get_array().
+ */
+struct gpio_descs {
+ unsigned int ndescs;
+ struct gpio_desc *desc[];
+};
+
#define GPIOD_FLAGS_BIT_DIR_SET BIT(0)
#define GPIOD_FLAGS_BIT_DIR_OUT BIT(1)
#define GPIOD_FLAGS_BIT_DIR_VAL BIT(2)
@@ -34,6 +43,9 @@ enum gpiod_flags {
#ifdef CONFIG_GPIOLIB
+/* Return the number of GPIOs associated with a device / function */
+int gpiod_count(struct device *dev, const char *con_id);
+
/* Acquire and dispose GPIOs */
struct gpio_desc *__must_check __gpiod_get(struct device *dev,
const char *con_id,
@@ -49,7 +61,14 @@ struct gpio_desc *__must_check __gpiod_get_index_optional(struct device *dev,
const char *con_id,
unsigned int index,
enum gpiod_flags flags);
+struct gpio_descs *__must_check gpiod_get_array(struct device *dev,
+ const char *con_id,
+ enum gpiod_flags flags);
+struct gpio_descs *__must_check gpiod_get_array_optional(struct device *dev,
+ const char *con_id,
+ enum gpiod_flags flags);
void gpiod_put(struct gpio_desc *desc);
+void gpiod_put_array(struct gpio_descs *descs);
struct gpio_desc *__must_check __devm_gpiod_get(struct device *dev,
const char *con_id,
@@ -64,7 +83,14 @@ struct gpio_desc *__must_check __devm_gpiod_get_optional(struct device *dev,
struct gpio_desc *__must_check
__devm_gpiod_get_index_optional(struct device *dev, const char *con_id,
unsigned int index, enum gpiod_flags flags);
+struct gpio_descs *__must_check devm_gpiod_get_array(struct device *dev,
+ const char *con_id,
+ enum gpiod_flags flags);
+struct gpio_descs *__must_check
+devm_gpiod_get_array_optional(struct device *dev, const char *con_id,
+ enum gpiod_flags flags);
void devm_gpiod_put(struct device *dev, struct gpio_desc *desc);
+void devm_gpiod_put_array(struct device *dev, struct gpio_descs *descs);
int gpiod_get_direction(struct gpio_desc *desc);
int gpiod_direction_input(struct gpio_desc *desc);
@@ -110,9 +136,15 @@ struct fwnode_handle;
struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode,
const char *propname);
struct gpio_desc *devm_get_gpiod_from_child(struct device *dev,
+ const char *con_id,
struct fwnode_handle *child);
#else /* CONFIG_GPIOLIB */
+static inline int gpiod_count(struct device *dev, const char *con_id)
+{
+ return 0;
+}
+
static inline struct gpio_desc *__must_check __gpiod_get(struct device *dev,
const char *con_id,
enum gpiod_flags flags)
@@ -142,6 +174,20 @@ __gpiod_get_index_optional(struct device *dev, const char *con_id,
return ERR_PTR(-ENOSYS);
}
+static inline struct gpio_descs *__must_check
+gpiod_get_array(struct device *dev, const char *con_id,
+ enum gpiod_flags flags)
+{
+ return ERR_PTR(-ENOSYS);
+}
+
+static inline struct gpio_descs *__must_check
+gpiod_get_array_optional(struct device *dev, const char *con_id,
+ enum gpiod_flags flags)
+{
+ return ERR_PTR(-ENOSYS);
+}
+
static inline void gpiod_put(struct gpio_desc *desc)
{
might_sleep();
@@ -150,6 +196,14 @@ static inline void gpiod_put(struct gpio_desc *desc)
WARN_ON(1);
}
+static inline void gpiod_put_array(struct gpio_descs *descs)
+{
+ might_sleep();
+
+ /* GPIO can never have been requested */
+ WARN_ON(1);
+}
+
static inline struct gpio_desc *__must_check
__devm_gpiod_get(struct device *dev,
const char *con_id,
@@ -181,6 +235,20 @@ __devm_gpiod_get_index_optional(struct device *dev, const char *con_id,
return ERR_PTR(-ENOSYS);
}
+static inline struct gpio_descs *__must_check
+devm_gpiod_get_array(struct device *dev, const char *con_id,
+ enum gpiod_flags flags)
+{
+ return ERR_PTR(-ENOSYS);
+}
+
+static inline struct gpio_descs *__must_check
+devm_gpiod_get_array_optional(struct device *dev, const char *con_id,
+ enum gpiod_flags flags)
+{
+ return ERR_PTR(-ENOSYS);
+}
+
static inline void devm_gpiod_put(struct device *dev, struct gpio_desc *desc)
{
might_sleep();
@@ -189,6 +257,15 @@ static inline void devm_gpiod_put(struct device *dev, struct gpio_desc *desc)
WARN_ON(1);
}
+static inline void devm_gpiod_put_array(struct device *dev,
+ struct gpio_descs *descs)
+{
+ might_sleep();
+
+ /* GPIO can never have been requested */
+ WARN_ON(1);
+}
+
static inline int gpiod_get_direction(const struct gpio_desc *desc)
{