From 102a0743326a03cd1a1202ceda21e175b7d3575c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:20:52 +0000
Subject: [PATCH] add new system file
---
kernel/include/linux/gpio/consumer.h | 288 +++++++++++++++++++++++++++++++++++++++++++++++----------
1 files changed, 235 insertions(+), 53 deletions(-)
diff --git a/kernel/include/linux/gpio/consumer.h b/kernel/include/linux/gpio/consumer.h
index 8dfd830..79f450e 100644
--- a/kernel/include/linux/gpio/consumer.h
+++ b/kernel/include/linux/gpio/consumer.h
@@ -2,9 +2,10 @@
#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;
@@ -18,10 +19,19 @@
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 gpio_array *info;
unsigned int ndescs;
struct gpio_desc *desc[];
};
@@ -30,6 +40,7 @@
#define GPIOD_FLAGS_BIT_DIR_OUT BIT(1)
#define GPIOD_FLAGS_BIT_DIR_VAL BIT(2)
#define GPIOD_FLAGS_BIT_OPEN_DRAIN BIT(3)
+#define GPIOD_FLAGS_BIT_NONEXCLUSIVE BIT(4)
/**
* Optional flags that can be passed to one of gpiod_* to configure direction
@@ -94,6 +105,7 @@
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_unhinge(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);
@@ -104,39 +116,51 @@
/* Value get/set from non-sleeping context */
int gpiod_get_value(const struct gpio_desc *desc);
int gpiod_get_array_value(unsigned int array_size,
- struct gpio_desc **desc_array, int *value_array);
+ struct gpio_desc **desc_array,
+ struct gpio_array *array_info,
+ unsigned long *value_bitmap);
void gpiod_set_value(struct gpio_desc *desc, int value);
-void gpiod_set_array_value(unsigned int array_size,
- struct gpio_desc **desc_array, int *value_array);
+int gpiod_set_array_value(unsigned int array_size,
+ struct gpio_desc **desc_array,
+ struct gpio_array *array_info,
+ unsigned long *value_bitmap);
int gpiod_get_raw_value(const struct gpio_desc *desc);
int gpiod_get_raw_array_value(unsigned int array_size,
struct gpio_desc **desc_array,
- int *value_array);
+ struct gpio_array *array_info,
+ unsigned long *value_bitmap);
void gpiod_set_raw_value(struct gpio_desc *desc, int value);
int gpiod_set_raw_array_value(unsigned int array_size,
- struct gpio_desc **desc_array,
- int *value_array);
+ struct gpio_desc **desc_array,
+ struct gpio_array *array_info,
+ unsigned long *value_bitmap);
/* Value get/set from sleeping context */
int gpiod_get_value_cansleep(const struct gpio_desc *desc);
int gpiod_get_array_value_cansleep(unsigned int array_size,
struct gpio_desc **desc_array,
- int *value_array);
+ struct gpio_array *array_info,
+ unsigned long *value_bitmap);
void gpiod_set_value_cansleep(struct gpio_desc *desc, int value);
-void gpiod_set_array_value_cansleep(unsigned int array_size,
- struct gpio_desc **desc_array,
- int *value_array);
+int gpiod_set_array_value_cansleep(unsigned int array_size,
+ struct gpio_desc **desc_array,
+ struct gpio_array *array_info,
+ unsigned long *value_bitmap);
int gpiod_get_raw_value_cansleep(const struct gpio_desc *desc);
int gpiod_get_raw_array_value_cansleep(unsigned int array_size,
struct gpio_desc **desc_array,
- int *value_array);
+ struct gpio_array *array_info,
+ unsigned long *value_bitmap);
void gpiod_set_raw_value_cansleep(struct gpio_desc *desc, int value);
int gpiod_set_raw_array_value_cansleep(unsigned int array_size,
- struct gpio_desc **desc_array,
- int *value_array);
+ struct gpio_desc **desc_array,
+ struct gpio_array *array_info,
+ unsigned long *value_bitmap);
+int gpiod_set_config(struct gpio_desc *desc, unsigned long config);
int gpiod_set_debounce(struct gpio_desc *desc, unsigned debounce);
int gpiod_set_transitory(struct gpio_desc *desc, bool transitory);
+void gpiod_toggle_active_low(struct gpio_desc *desc);
int gpiod_is_active_low(const struct gpio_desc *desc);
int gpiod_cansleep(const struct gpio_desc *desc);
@@ -149,25 +173,25 @@
int desc_to_gpio(const struct gpio_desc *desc);
/* Child properties interface */
-struct device_node;
struct fwnode_handle;
-struct gpio_desc *devm_gpiod_get_from_of_node(struct device *dev,
- struct device_node *node,
- const char *propname, int index,
- enum gpiod_flags dflags,
- const char *label);
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 *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);
+struct gpio_desc *fwnode_gpiod_get_index(struct fwnode_handle *fwnode,
+ const char *con_id, int index,
+ enum gpiod_flags flags,
+ const char *label);
+struct gpio_desc *devm_fwnode_gpiod_get_index(struct device *dev,
+ struct fwnode_handle *child,
+ const char *con_id, int index,
+ enum gpiod_flags flags,
+ const char *label);
#else /* CONFIG_GPIOLIB */
+
+#include <linux/kernel.h>
static inline int gpiod_count(struct device *dev, const char *con_id)
{
@@ -218,6 +242,15 @@
}
static inline void gpiod_put(struct gpio_desc *desc)
+{
+ might_sleep();
+
+ /* GPIO can never have been requested */
+ WARN_ON(desc);
+}
+
+static inline void devm_gpiod_unhinge(struct device *dev,
+ struct gpio_desc *desc)
{
might_sleep();
@@ -330,7 +363,8 @@
}
static inline int gpiod_get_array_value(unsigned int array_size,
struct gpio_desc **desc_array,
- int *value_array)
+ struct gpio_array *array_info,
+ unsigned long *value_bitmap)
{
/* GPIO can never have been requested */
WARN_ON(desc_array);
@@ -341,12 +375,14 @@
/* GPIO can never have been requested */
WARN_ON(desc);
}
-static inline void gpiod_set_array_value(unsigned int array_size,
- struct gpio_desc **desc_array,
- int *value_array)
+static inline int gpiod_set_array_value(unsigned int array_size,
+ struct gpio_desc **desc_array,
+ struct gpio_array *array_info,
+ unsigned long *value_bitmap)
{
/* GPIO can never have been requested */
WARN_ON(desc_array);
+ return 0;
}
static inline int gpiod_get_raw_value(const struct gpio_desc *desc)
{
@@ -356,7 +392,8 @@
}
static inline int gpiod_get_raw_array_value(unsigned int array_size,
struct gpio_desc **desc_array,
- int *value_array)
+ struct gpio_array *array_info,
+ unsigned long *value_bitmap)
{
/* GPIO can never have been requested */
WARN_ON(desc_array);
@@ -368,8 +405,9 @@
WARN_ON(desc);
}
static inline int gpiod_set_raw_array_value(unsigned int array_size,
- struct gpio_desc **desc_array,
- int *value_array)
+ struct gpio_desc **desc_array,
+ struct gpio_array *array_info,
+ unsigned long *value_bitmap)
{
/* GPIO can never have been requested */
WARN_ON(desc_array);
@@ -384,7 +422,8 @@
}
static inline int gpiod_get_array_value_cansleep(unsigned int array_size,
struct gpio_desc **desc_array,
- int *value_array)
+ struct gpio_array *array_info,
+ unsigned long *value_bitmap)
{
/* GPIO can never have been requested */
WARN_ON(desc_array);
@@ -395,12 +434,14 @@
/* GPIO can never have been requested */
WARN_ON(desc);
}
-static inline void gpiod_set_array_value_cansleep(unsigned int array_size,
+static inline int gpiod_set_array_value_cansleep(unsigned int array_size,
struct gpio_desc **desc_array,
- int *value_array)
+ struct gpio_array *array_info,
+ unsigned long *value_bitmap)
{
/* GPIO can never have been requested */
WARN_ON(desc_array);
+ return 0;
}
static inline int gpiod_get_raw_value_cansleep(const struct gpio_desc *desc)
{
@@ -410,7 +451,8 @@
}
static inline int gpiod_get_raw_array_value_cansleep(unsigned int array_size,
struct gpio_desc **desc_array,
- int *value_array)
+ struct gpio_array *array_info,
+ unsigned long *value_bitmap)
{
/* GPIO can never have been requested */
WARN_ON(desc_array);
@@ -424,11 +466,19 @@
}
static inline int gpiod_set_raw_array_value_cansleep(unsigned int array_size,
struct gpio_desc **desc_array,
- int *value_array)
+ struct gpio_array *array_info,
+ unsigned long *value_bitmap)
{
/* GPIO can never have been requested */
WARN_ON(desc_array);
return 0;
+}
+
+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 debounce)
@@ -443,6 +493,12 @@
/* GPIO can never have been requested */
WARN_ON(desc);
return -ENOSYS;
+}
+
+static inline void gpiod_toggle_active_low(struct gpio_desc *desc)
+{
+ /* GPIO can never have been requested */
+ WARN_ON(desc);
}
static inline int gpiod_is_active_low(const struct gpio_desc *desc)
@@ -486,18 +542,7 @@
}
/* Child properties interface */
-struct device_node;
struct fwnode_handle;
-
-static inline
-struct gpio_desc *devm_gpiod_get_from_of_node(struct device *dev,
- struct device_node *node,
- const char *propname, int index,
- enum gpiod_flags dflags,
- const char *label)
-{
- return ERR_PTR(-ENOSYS);
-}
static inline
struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode,
@@ -509,16 +554,47 @@
}
static inline
+struct gpio_desc *fwnode_gpiod_get_index(struct fwnode_handle *fwnode,
+ const char *con_id, int index,
+ enum gpiod_flags flags,
+ const char *label)
+{
+ return ERR_PTR(-ENOSYS);
+}
+
+static inline
+struct gpio_desc *devm_fwnode_gpiod_get_index(struct device *dev,
+ struct fwnode_handle *fwnode,
+ const char *con_id, int index,
+ enum gpiod_flags flags,
+ const char *label)
+{
+ return ERR_PTR(-ENOSYS);
+}
+
+#endif /* CONFIG_GPIOLIB */
+
+static inline
+struct gpio_desc *devm_fwnode_gpiod_get(struct device *dev,
+ struct fwnode_handle *fwnode,
+ const char *con_id,
+ enum gpiod_flags flags,
+ const char *label)
+{
+ return devm_fwnode_gpiod_get_index(dev, fwnode, con_id, 0,
+ flags, label);
+}
+
+static inline
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)
{
- return ERR_PTR(-ENOSYS);
+ return devm_fwnode_gpiod_get_index(dev, child, con_id, index,
+ flags, label);
}
-
-#endif /* CONFIG_GPIOLIB */
static inline
struct gpio_desc *devm_fwnode_get_gpiod_from_child(struct device *dev,
@@ -527,10 +603,116 @@
enum gpiod_flags flags,
const char *label)
{
- return devm_fwnode_get_index_gpiod_from_child(dev, con_id, 0, child,
- flags, label);
+ return devm_fwnode_gpiod_get_index(dev, child, con_id, 0, flags, label);
}
+#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,
+ const char *propname, int index,
+ enum gpiod_flags dflags,
+ const char *label);
+
+#else /* CONFIG_GPIOLIB && CONFIG_OF_GPIO */
+
+struct device_node;
+
+static inline
+struct gpio_desc *gpiod_get_from_of_node(struct device_node *node,
+ const char *propname, int index,
+ enum gpiod_flags dflags,
+ const char *label)
+{
+ return ERR_PTR(-ENOSYS);
+}
+
+#endif /* CONFIG_GPIOLIB && CONFIG_OF_GPIO */
+
+#ifdef CONFIG_GPIOLIB
+struct device_node;
+
+struct gpio_desc *devm_gpiod_get_from_of_node(struct device *dev,
+ struct device_node *node,
+ const char *propname, int index,
+ enum gpiod_flags dflags,
+ const char *label);
+
+#else /* CONFIG_GPIOLIB */
+
+struct device_node;
+
+static inline
+struct gpio_desc *devm_gpiod_get_from_of_node(struct device *dev,
+ struct device_node *node,
+ const char *propname, int index,
+ enum gpiod_flags dflags,
+ const char *label)
+{
+ return ERR_PTR(-ENOSYS);
+}
+
+#endif /* CONFIG_GPIOLIB */
+
+struct acpi_gpio_params {
+ unsigned int crs_entry_index;
+ unsigned int line_index;
+ bool active_low;
+};
+
+struct acpi_gpio_mapping {
+ const char *name;
+ const struct acpi_gpio_params *data;
+ unsigned int size;
+
+/* Ignore IoRestriction field */
+#define ACPI_GPIO_QUIRK_NO_IO_RESTRICTION BIT(0)
+/*
+ * When ACPI GPIO mapping table is in use the index parameter inside it
+ * refers to the GPIO resource in _CRS method. That index has no
+ * distinction of actual type of the resource. When consumer wants to
+ * 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;
+
+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 acpi_device;
+
+static inline int acpi_dev_add_driver_gpios(struct acpi_device *adev,
+ const struct acpi_gpio_mapping *gpios)
+{
+ return -ENXIO;
+}
+static inline void acpi_dev_remove_driver_gpios(struct acpi_device *adev) {}
+
+static inline int devm_acpi_dev_add_driver_gpios(struct device *dev,
+ const struct acpi_gpio_mapping *gpios)
+{
+ return -ENXIO;
+}
+static inline void devm_acpi_dev_remove_driver_gpios(struct device *dev) {}
+
+#endif /* CONFIG_GPIOLIB && CONFIG_ACPI */
+
+
#if IS_ENABLED(CONFIG_GPIOLIB) && IS_ENABLED(CONFIG_GPIO_SYSFS)
int gpiod_export(struct gpio_desc *desc, bool direction_may_change);
--
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