54 lines
1.1 KiB
C
54 lines
1.1 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0-only */
|
||
|
|
/* MCP23S08 SPI/I2C GPIO driver */
|
||
|
|
|
||
|
|
#include <linux/gpio/driver.h>
|
||
|
|
#include <linux/irq.h>
|
||
|
|
#include <linux/mutex.h>
|
||
|
|
#include <linux/pinctrl/pinctrl.h>
|
||
|
|
#include <linux/types.h>
|
||
|
|
|
||
|
|
/*
|
||
|
|
* MCP types supported by driver
|
||
|
|
*/
|
||
|
|
#define MCP_TYPE_S08 1
|
||
|
|
#define MCP_TYPE_S17 2
|
||
|
|
#define MCP_TYPE_008 3
|
||
|
|
#define MCP_TYPE_017 4
|
||
|
|
#define MCP_TYPE_S18 5
|
||
|
|
#define MCP_TYPE_018 6
|
||
|
|
|
||
|
|
struct device;
|
||
|
|
struct regmap;
|
||
|
|
|
||
|
|
struct pinctrl_dev;
|
||
|
|
|
||
|
|
struct mcp23s08 {
|
||
|
|
u8 addr;
|
||
|
|
bool irq_active_high;
|
||
|
|
bool reg_shift;
|
||
|
|
|
||
|
|
u16 irq_rise;
|
||
|
|
u16 irq_fall;
|
||
|
|
int irq;
|
||
|
|
bool irq_controller;
|
||
|
|
int cached_gpio;
|
||
|
|
/* lock protects regmap access with bypass/cache flags */
|
||
|
|
struct mutex lock;
|
||
|
|
|
||
|
|
struct gpio_chip chip;
|
||
|
|
struct irq_chip irq_chip;
|
||
|
|
|
||
|
|
struct regmap *regmap;
|
||
|
|
struct device *dev;
|
||
|
|
|
||
|
|
struct pinctrl_dev *pctldev;
|
||
|
|
struct pinctrl_desc pinctrl_desc;
|
||
|
|
struct gpio_desc *reset_gpio;
|
||
|
|
};
|
||
|
|
|
||
|
|
extern const struct regmap_config mcp23x08_regmap;
|
||
|
|
extern const struct regmap_config mcp23x17_regmap;
|
||
|
|
|
||
|
|
int mcp23s08_probe_one(struct mcp23s08 *mcp, struct device *dev,
|
||
|
|
unsigned int addr, unsigned int type, unsigned int base);
|