Contributors: 23
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| David Brownell |
366 |
49.80% |
4 |
11.11% |
| Mark Brown |
88 |
11.97% |
3 |
8.33% |
| Wolfram Sang |
82 |
11.16% |
2 |
5.56% |
| Alexandre Courbot |
67 |
9.12% |
4 |
11.11% |
| Eric Miao |
36 |
4.90% |
1 |
2.78% |
| Arnd Bergmann |
24 |
3.27% |
1 |
2.78% |
| Guennadi Liakhovetski |
10 |
1.36% |
1 |
2.78% |
| Linus Walleij |
9 |
1.22% |
3 |
8.33% |
| Uwe Kleine-König |
8 |
1.09% |
1 |
2.78% |
| Laxman Dewangan |
8 |
1.09% |
2 |
5.56% |
| Felipe Balbi |
7 |
0.95% |
1 |
2.78% |
| Andy Shevchenko |
6 |
0.82% |
2 |
5.56% |
| Lars-Peter Clausen |
4 |
0.54% |
1 |
2.78% |
| Christophe Leroy |
3 |
0.41% |
1 |
2.78% |
| Jani Nikula |
3 |
0.41% |
1 |
2.78% |
| Shawn Guo |
3 |
0.41% |
1 |
2.78% |
| Anton Vorontsov |
3 |
0.41% |
1 |
2.78% |
| Paul Gortmaker |
2 |
0.27% |
1 |
2.78% |
| Joe Perches |
2 |
0.27% |
1 |
2.78% |
| Greg Kroah-Hartman |
1 |
0.14% |
1 |
2.78% |
| Mauro Carvalho Chehab |
1 |
0.14% |
1 |
2.78% |
| Mika Westerberg |
1 |
0.14% |
1 |
2.78% |
| Randy Dunlap |
1 |
0.14% |
1 |
2.78% |
| Total |
735 |
|
36 |
|
/* SPDX-License-Identifier: GPL-2.0 */
/*
* <linux/gpio.h>
*
* This is the LEGACY GPIO bulk include file, including legacy APIs. It is
* used for GPIO drivers still referencing the global GPIO numberspace,
* and should not be included in new code.
*
* If you're implementing a GPIO driver, only include <linux/gpio/driver.h>
* If you're implementing a GPIO consumer, only include <linux/gpio/consumer.h>
*/
#ifndef __LINUX_GPIO_H
#define __LINUX_GPIO_H
#include <linux/types.h>
struct device;
/* see Documentation/driver-api/gpio/legacy.rst */
/* make these flag values available regardless of GPIO kconfig options */
#define GPIOF_DIR_OUT (0 << 0)
#define GPIOF_DIR_IN (1 << 0)
#define GPIOF_INIT_LOW (0 << 1)
#define GPIOF_INIT_HIGH (1 << 1)
#define GPIOF_IN (GPIOF_DIR_IN)
#define GPIOF_OUT_INIT_LOW (GPIOF_DIR_OUT | GPIOF_INIT_LOW)
#define GPIOF_OUT_INIT_HIGH (GPIOF_DIR_OUT | GPIOF_INIT_HIGH)
/* Gpio pin is active-low */
#define GPIOF_ACTIVE_LOW (1 << 2)
/* Gpio pin is open drain */
#define GPIOF_OPEN_DRAIN (1 << 3)
/* Gpio pin is open source */
#define GPIOF_OPEN_SOURCE (1 << 4)
#define GPIOF_EXPORT (1 << 5)
#define GPIOF_EXPORT_CHANGEABLE (1 << 6)
#define GPIOF_EXPORT_DIR_FIXED (GPIOF_EXPORT)
#define GPIOF_EXPORT_DIR_CHANGEABLE (GPIOF_EXPORT | GPIOF_EXPORT_CHANGEABLE)
/**
* struct gpio - a structure describing a GPIO with configuration
* @gpio: the GPIO number
* @flags: GPIO configuration as specified by GPIOF_*
* @label: a literal description string of this GPIO
*/
struct gpio {
unsigned gpio;
unsigned long flags;
const char *label;
};
#ifdef CONFIG_GPIOLIB
#include <linux/gpio/consumer.h>
/*
* "valid" GPIO numbers are nonnegative and may be passed to
* setup routines like gpio_request(). Only some valid numbers
* can successfully be requested and used.
*
* Invalid GPIO numbers are useful for indicating no-such-GPIO in
* platform data and other tables.
*/
static inline bool gpio_is_valid(int number)
{
/* only non-negative numbers are valid */
return number >= 0;
}
/*
* Platforms may implement their GPIO interface with library code,
* at a small performance cost for non-inlined operations and some
* extra memory (for code and for per-GPIO table entries).
*/
/*
* At the end we want all GPIOs to be dynamically allocated from 0.
* However, some legacy drivers still perform fixed allocation.
* Until they are all fixed, leave 0-512 space for them.
*/
#define GPIO_DYNAMIC_BASE 512
/* Always use the library code for GPIO management calls,
* or when sleeping may be involved.
*/
int gpio_request(unsigned gpio, const char *label);
void gpio_free(unsigned gpio);
static inline int gpio_direction_input(unsigned gpio)
{
return gpiod_direction_input(gpio_to_desc(gpio));
}
static inline int gpio_direction_output(unsigned gpio, int value)
{
return gpiod_direction_output_raw(gpio_to_desc(gpio), value);
}
static inline int gpio_get_value_cansleep(unsigned gpio)
{
return gpiod_get_raw_value_cansleep(gpio_to_desc(gpio));
}
static inline void gpio_set_value_cansleep(unsigned gpio, int value)
{
return gpiod_set_raw_value_cansleep(gpio_to_desc(gpio), value);
}
static inline int gpio_get_value(unsigned gpio)
{
return gpiod_get_raw_value(gpio_to_desc(gpio));
}
static inline void gpio_set_value(unsigned gpio, int value)
{
return gpiod_set_raw_value(gpio_to_desc(gpio), value);
}
static inline int gpio_cansleep(unsigned gpio)
{
return gpiod_cansleep(gpio_to_desc(gpio));
}
static inline int gpio_to_irq(unsigned gpio)
{
return gpiod_to_irq(gpio_to_desc(gpio));
}
int gpio_request_one(unsigned gpio, unsigned long flags, const char *label);
int gpio_request_array(const struct gpio *array, size_t num);
void gpio_free_array(const struct gpio *array, size_t num);
/* CONFIG_GPIOLIB: bindings for managed devices that want to request gpios */
int devm_gpio_request(struct device *dev, unsigned gpio, const char *label);
int devm_gpio_request_one(struct device *dev, unsigned gpio,
unsigned long flags, const char *label);
#else /* ! CONFIG_GPIOLIB */
#include <linux/kernel.h>
#include <asm/bug.h>
#include <asm/errno.h>
static inline bool gpio_is_valid(int number)
{
return false;
}
static inline int gpio_request(unsigned gpio, const char *label)
{
return -ENOSYS;
}
static inline int gpio_request_one(unsigned gpio,
unsigned long flags, const char *label)
{
return -ENOSYS;
}
static inline int gpio_request_array(const struct gpio *array, size_t num)
{
return -ENOSYS;
}
static inline void gpio_free(unsigned gpio)
{
might_sleep();
/* GPIO can never have been requested */
WARN_ON(1);
}
static inline void gpio_free_array(const struct gpio *array, size_t num)
{
might_sleep();
/* GPIO can never have been requested */
WARN_ON(1);
}
static inline int gpio_direction_input(unsigned gpio)
{
return -ENOSYS;
}
static inline int gpio_direction_output(unsigned gpio, int value)
{
return -ENOSYS;
}
static inline int gpio_get_value(unsigned gpio)
{
/* GPIO can never have been requested or set as {in,out}put */
WARN_ON(1);
return 0;
}
static inline void gpio_set_value(unsigned gpio, int value)
{
/* GPIO can never have been requested or set as output */
WARN_ON(1);
}
static inline int gpio_cansleep(unsigned gpio)
{
/* GPIO can never have been requested or set as {in,out}put */
WARN_ON(1);
return 0;
}
static inline int gpio_get_value_cansleep(unsigned gpio)
{
/* GPIO can never have been requested or set as {in,out}put */
WARN_ON(1);
return 0;
}
static inline void gpio_set_value_cansleep(unsigned gpio, int value)
{
/* GPIO can never have been requested or set as output */
WARN_ON(1);
}
static inline int gpio_to_irq(unsigned gpio)
{
/* GPIO can never have been requested or set as input */
WARN_ON(1);
return -EINVAL;
}
static inline int devm_gpio_request(struct device *dev, unsigned gpio,
const char *label)
{
WARN_ON(1);
return -EINVAL;
}
static inline int devm_gpio_request_one(struct device *dev, unsigned gpio,
unsigned long flags, const char *label)
{
WARN_ON(1);
return -EINVAL;
}
#endif /* ! CONFIG_GPIOLIB */
#endif /* __LINUX_GPIO_H */