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-rw-r--r--include/linux/gpio/consumer.h107
1 files changed, 60 insertions, 47 deletions
diff --git a/include/linux/gpio/consumer.h b/include/linux/gpio/consumer.h
index bf2d017dd7b7..36460ced060b 100644
--- a/include/linux/gpio/consumer.h
+++ b/include/linux/gpio/consumer.h
@@ -2,32 +2,22 @@
#ifndef __LINUX_GPIO_CONSUMER_H
#define __LINUX_GPIO_CONSUMER_H
+#include <linux/bits.h>
#include <linux/bug.h>
+#include <linux/compiler_types.h>
#include <linux/err.h>
-#include <linux/kernel.h>
struct device;
-
-/**
- * Opaque descriptor for a GPIO. These are obtained using gpiod_get() and are
- * preferable to the old integer-based handles.
- *
- * Contrary to integers, a pointer to a gpio_desc is guaranteed to be valid
- * until the GPIO is released.
- */
struct gpio_desc;
-
-/**
- * Opaque descriptor for a structure of GPIO array attributes. This structure
- * is attached to struct gpiod_descs obtained from gpiod_get_array() and can be
- * passed back to get/set array functions in order to activate fast processing
- * path if applicable.
- */
struct gpio_array;
/**
- * Struct containing an array of descriptors that can be obtained using
- * gpiod_get_array().
+ * struct gpio_descs - Struct containing an array of descriptors that can be
+ * obtained using gpiod_get_array()
+ *
+ * @info: Pointer to the opaque gpio_array structure
+ * @ndescs: Number of held descriptors
+ * @desc: Array of pointers to GPIO descriptors
*/
struct gpio_descs {
struct gpio_array *info;
@@ -42,8 +32,16 @@ struct gpio_descs {
#define GPIOD_FLAGS_BIT_NONEXCLUSIVE BIT(4)
/**
- * Optional flags that can be passed to one of gpiod_* to configure direction
- * and output value. These values cannot be OR'd.
+ * enum gpiod_flags - Optional flags that can be passed to one of gpiod_* to
+ * configure direction and output value. These values
+ * cannot be OR'd.
+ *
+ * @GPIOD_ASIS: Don't change anything
+ * @GPIOD_IN: Set lines to input mode
+ * @GPIOD_OUT_LOW: Set lines to output and drive them low
+ * @GPIOD_OUT_HIGH: Set lines to output and drive them high
+ * @GPIOD_OUT_LOW_OPEN_DRAIN: Set lines to open-drain output and drive them low
+ * @GPIOD_OUT_HIGH_OPEN_DRAIN: Set lines to open-drain output and drive them high
*/
enum gpiod_flags {
GPIOD_ASIS = 0,
@@ -111,6 +109,8 @@ int gpiod_get_direction(struct gpio_desc *desc);
int gpiod_direction_input(struct gpio_desc *desc);
int gpiod_direction_output(struct gpio_desc *desc, int value);
int gpiod_direction_output_raw(struct gpio_desc *desc, int value);
+int gpiod_enable_hw_timestamp_ns(struct gpio_desc *desc, unsigned long flags);
+int gpiod_disable_hw_timestamp_ns(struct gpio_desc *desc, unsigned long flags);
/* Value get/set from non-sleeping context */
int gpiod_get_value(const struct gpio_desc *desc);
@@ -156,7 +156,8 @@ int gpiod_set_raw_array_value_cansleep(unsigned int array_size,
struct gpio_array *array_info,
unsigned long *value_bitmap);
-int gpiod_set_debounce(struct gpio_desc *desc, unsigned debounce);
+int gpiod_set_config(struct gpio_desc *desc, unsigned long config);
+int gpiod_set_debounce(struct gpio_desc *desc, unsigned int debounce);
int gpiod_set_transitory(struct gpio_desc *desc, bool transitory);
void gpiod_toggle_active_low(struct gpio_desc *desc);
@@ -173,10 +174,6 @@ int desc_to_gpio(const struct gpio_desc *desc);
/* Child properties interface */
struct fwnode_handle;
-struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode,
- const char *propname, int index,
- enum gpiod_flags dflags,
- const char *label);
struct gpio_desc *fwnode_gpiod_get_index(struct fwnode_handle *fwnode,
const char *con_id, int index,
enum gpiod_flags flags,
@@ -189,6 +186,8 @@ struct gpio_desc *devm_fwnode_gpiod_get_index(struct device *dev,
#else /* CONFIG_GPIOLIB */
+#include <linux/kernel.h>
+
static inline int gpiod_count(struct device *dev, const char *con_id)
{
return 0;
@@ -349,8 +348,18 @@ static inline int gpiod_direction_output_raw(struct gpio_desc *desc, int value)
WARN_ON(desc);
return -ENOSYS;
}
-
-
+static inline int gpiod_enable_hw_timestamp_ns(struct gpio_desc *desc,
+ unsigned long flags)
+{
+ WARN_ON(desc);
+ return -ENOSYS;
+}
+static inline int gpiod_disable_hw_timestamp_ns(struct gpio_desc *desc,
+ unsigned long flags)
+{
+ WARN_ON(desc);
+ return -ENOSYS;
+}
static inline int gpiod_get_value(const struct gpio_desc *desc)
{
/* GPIO can never have been requested */
@@ -470,7 +479,14 @@ static inline int gpiod_set_raw_array_value_cansleep(unsigned int array_size,
return 0;
}
-static inline int gpiod_set_debounce(struct gpio_desc *desc, unsigned debounce)
+static inline int gpiod_set_config(struct gpio_desc *desc, unsigned long config)
+{
+ /* GPIO can never have been requested */
+ WARN_ON(desc);
+ return -ENOSYS;
+}
+
+static inline int gpiod_set_debounce(struct gpio_desc *desc, unsigned int debounce)
{
/* GPIO can never have been requested */
WARN_ON(desc);
@@ -534,15 +550,6 @@ static inline int desc_to_gpio(const struct gpio_desc *desc)
struct fwnode_handle;
static inline
-struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode,
- const char *propname, int index,
- enum gpiod_flags dflags,
- const char *label)
-{
- return ERR_PTR(-ENOSYS);
-}
-
-static inline
struct gpio_desc *fwnode_gpiod_get_index(struct fwnode_handle *fwnode,
const char *con_id, int index,
enum gpiod_flags flags,
@@ -598,7 +605,7 @@ struct gpio_desc *devm_fwnode_get_gpiod_from_child(struct device *dev,
#if IS_ENABLED(CONFIG_GPIOLIB) && IS_ENABLED(CONFIG_OF_GPIO)
struct device_node;
-struct gpio_desc *gpiod_get_from_of_node(struct device_node *node,
+struct gpio_desc *gpiod_get_from_of_node(const struct device_node *node,
const char *propname, int index,
enum gpiod_flags dflags,
const char *label);
@@ -608,7 +615,7 @@ struct gpio_desc *gpiod_get_from_of_node(struct device_node *node,
struct device_node;
static inline
-struct gpio_desc *gpiod_get_from_of_node(struct device_node *node,
+struct gpio_desc *gpiod_get_from_of_node(const struct device_node *node,
const char *propname, int index,
enum gpiod_flags dflags,
const char *label)
@@ -622,7 +629,7 @@ struct gpio_desc *gpiod_get_from_of_node(struct device_node *node,
struct device_node;
struct gpio_desc *devm_gpiod_get_from_of_node(struct device *dev,
- struct device_node *node,
+ const struct device_node *node,
const char *propname, int index,
enum gpiod_flags dflags,
const char *label);
@@ -633,7 +640,7 @@ struct device_node;
static inline
struct gpio_desc *devm_gpiod_get_from_of_node(struct device *dev,
- struct device_node *node,
+ const struct device_node *node,
const char *propname, int index,
enum gpiod_flags dflags,
const char *label)
@@ -663,25 +670,26 @@ struct acpi_gpio_mapping {
* get GpioIo type explicitly, this quirk may be used.
*/
#define ACPI_GPIO_QUIRK_ONLY_GPIOIO BIT(1)
+/* Use given pin as an absolute GPIO number in the system */
+#define ACPI_GPIO_QUIRK_ABSOLUTE_NUMBER BIT(2)
unsigned int quirks;
};
-#if IS_ENABLED(CONFIG_GPIOLIB) && IS_ENABLED(CONFIG_ACPI)
-
struct acpi_device;
+#if IS_ENABLED(CONFIG_GPIOLIB) && IS_ENABLED(CONFIG_ACPI)
+
int acpi_dev_add_driver_gpios(struct acpi_device *adev,
const struct acpi_gpio_mapping *gpios);
void acpi_dev_remove_driver_gpios(struct acpi_device *adev);
int devm_acpi_dev_add_driver_gpios(struct device *dev,
const struct acpi_gpio_mapping *gpios);
-void devm_acpi_dev_remove_driver_gpios(struct device *dev);
-#else /* CONFIG_GPIOLIB && CONFIG_ACPI */
+struct gpio_desc *acpi_get_and_request_gpiod(char *path, unsigned int pin, char *label);
-struct acpi_device;
+#else /* CONFIG_GPIOLIB && CONFIG_ACPI */
static inline int acpi_dev_add_driver_gpios(struct acpi_device *adev,
const struct acpi_gpio_mapping *gpios)
@@ -695,7 +703,12 @@ static inline int devm_acpi_dev_add_driver_gpios(struct device *dev,
{
return -ENXIO;
}
-static inline void devm_acpi_dev_remove_driver_gpios(struct device *dev) {}
+
+static inline struct gpio_desc *acpi_get_and_request_gpiod(char *path, unsigned int pin,
+ char *label)
+{
+ return ERR_PTR(-ENOSYS);
+}
#endif /* CONFIG_GPIOLIB && CONFIG_ACPI */
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.