/* 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);