mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
2cbfca66ba
Literally. I expect "lose" was meant here, rather than "loose", though you could feasibly use a somewhat uncommon definition of "loose" to mean what would be meant by "lose": "Loose the hounds" for instance, as in "Release the hounds". Substituting in "value" for "hounds" gives "release the value", and makes some sense, but futher substituting back to loose gives "loose the value" which overall just seems a bit anachronistic. Instead, use modern, pragmatic English and save a character. Cc: Russell Currey <ruscur@russell.cc> Signed-off-by: Andrew Jeffery <andrew@aj.id.au> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
75 lines
2.4 KiB
C
75 lines
2.4 KiB
C
#ifndef __LINUX_GPIO_MACHINE_H
|
|
#define __LINUX_GPIO_MACHINE_H
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/list.h>
|
|
|
|
enum gpio_lookup_flags {
|
|
GPIO_ACTIVE_HIGH = (0 << 0),
|
|
GPIO_ACTIVE_LOW = (1 << 0),
|
|
GPIO_OPEN_DRAIN = (1 << 1),
|
|
GPIO_OPEN_SOURCE = (1 << 2),
|
|
GPIO_SLEEP_MAINTAIN_VALUE = (0 << 3),
|
|
GPIO_SLEEP_MAY_LOSE_VALUE = (1 << 3),
|
|
};
|
|
|
|
/**
|
|
* struct gpiod_lookup - lookup table
|
|
* @chip_label: name of the chip the GPIO belongs to
|
|
* @chip_hwnum: hardware number (i.e. relative to the chip) of the GPIO
|
|
* @con_id: name of the GPIO from the device's point of view
|
|
* @idx: index of the GPIO in case several GPIOs share the same name
|
|
* @flags: mask of GPIO_* values
|
|
*
|
|
* gpiod_lookup is a lookup table for associating GPIOs to specific devices and
|
|
* functions using platform data.
|
|
*/
|
|
struct gpiod_lookup {
|
|
const char *chip_label;
|
|
u16 chip_hwnum;
|
|
const char *con_id;
|
|
unsigned int idx;
|
|
enum gpio_lookup_flags flags;
|
|
};
|
|
|
|
struct gpiod_lookup_table {
|
|
struct list_head list;
|
|
const char *dev_id;
|
|
struct gpiod_lookup table[];
|
|
};
|
|
|
|
/*
|
|
* Simple definition of a single GPIO under a con_id
|
|
*/
|
|
#define GPIO_LOOKUP(_chip_label, _chip_hwnum, _con_id, _flags) \
|
|
GPIO_LOOKUP_IDX(_chip_label, _chip_hwnum, _con_id, 0, _flags)
|
|
|
|
/*
|
|
* Use this macro if you need to have several GPIOs under the same con_id.
|
|
* Each GPIO needs to use a different index and can be accessed using
|
|
* gpiod_get_index()
|
|
*/
|
|
#define GPIO_LOOKUP_IDX(_chip_label, _chip_hwnum, _con_id, _idx, _flags) \
|
|
{ \
|
|
.chip_label = _chip_label, \
|
|
.chip_hwnum = _chip_hwnum, \
|
|
.con_id = _con_id, \
|
|
.idx = _idx, \
|
|
.flags = _flags, \
|
|
}
|
|
|
|
#ifdef CONFIG_GPIOLIB
|
|
void gpiod_add_lookup_table(struct gpiod_lookup_table *table);
|
|
void gpiod_add_lookup_tables(struct gpiod_lookup_table **tables, size_t n);
|
|
void gpiod_remove_lookup_table(struct gpiod_lookup_table *table);
|
|
#else
|
|
static inline
|
|
void gpiod_add_lookup_table(struct gpiod_lookup_table *table) {}
|
|
static inline
|
|
void gpiod_add_lookup_tables(struct gpiod_lookup_table **tables, size_t n) {}
|
|
static inline
|
|
void gpiod_remove_lookup_table(struct gpiod_lookup_table *table) {}
|
|
#endif
|
|
|
|
#endif /* __LINUX_GPIO_MACHINE_H */
|