1/* SPDX-License-Identifier: GPL-2.0-only */ 2/* MCP23S08 SPI/I2C GPIO driver */ 3 4#include <linux/gpio/driver.h> 5#include <linux/irq.h> 6#include <linux/mutex.h> 7#include <linux/pinctrl/pinctrl.h> 8#include <linux/types.h> 9 10/* 11 * MCP types supported by driver 12 */ 13#define MCP_TYPE_S08 1 14#define MCP_TYPE_S17 2 15#define MCP_TYPE_008 3 16#define MCP_TYPE_017 4 17#define MCP_TYPE_S18 5 18#define MCP_TYPE_018 6 19 20struct device; 21struct regmap; 22 23struct pinctrl_dev; 24 25struct mcp23s08_info { 26 const struct regmap_config *regmap; 27 const char *label; 28 unsigned int type; 29 u16 ngpio; 30 bool reg_shift; 31}; 32 33struct mcp23s08 { 34 u8 addr; 35 bool irq_active_high; 36 bool reg_shift; 37 38 u16 irq_rise; 39 u16 irq_fall; 40 int irq; 41 bool irq_controller; 42 int cached_gpio; 43 /* lock protects regmap access with bypass/cache flags */ 44 struct mutex lock; 45 46 struct gpio_chip chip; 47 48 struct regmap *regmap; 49 struct device *dev; 50 51 struct pinctrl_dev *pctldev; 52 struct pinctrl_desc pinctrl_desc; 53 struct gpio_desc *reset_gpio; 54}; 55 56extern const struct regmap_config mcp23x08_regmap; 57extern const struct regmap_config mcp23x17_regmap; 58 59int mcp23s08_probe_one(struct mcp23s08 *mcp, struct device *dev, 60 unsigned int addr, unsigned int type, unsigned int base); 61