// SPDX-License-Identifier: GPL-2.0-only /* MCP23S08 SPI/I2C GPIO driver */ #include <linux/bitops.h> #include <linux/kernel.h> #include <linux/device.h> #include <linux/mutex.h> #include <linux/mod_devicetable.h> #include <linux/module.h> #include <linux/export.h> #include <linux/gpio/driver.h> #include <linux/gpio/consumer.h> #include <linux/seq_file.h> #include <linux/slab.h> #include <asm/byteorder.h> #include <linux/interrupt.h> #include <linux/regmap.h> #include <linux/pinctrl/pinctrl.h> #include <linux/pinctrl/pinconf.h> #include <linux/pinctrl/pinconf-generic.h> #include "pinctrl-mcp23s08.h" /* Registers are all 8 bits wide. * * The mcp23s17 has twice as many bits, and can be configured to work * with either 16 bit registers or with two adjacent 8 bit banks. */ #define MCP_IODIR … #define MCP_IPOL … #define MCP_GPINTEN … #define MCP_DEFVAL … #define MCP_INTCON … #define MCP_IOCON … #define IOCON_MIRROR … #define IOCON_SEQOP … #define IOCON_HAEN … #define IOCON_ODR … #define IOCON_INTPOL … #define IOCON_INTCC … #define MCP_GPPU … #define MCP_INTF … #define MCP_INTCAP … #define MCP_GPIO … #define MCP_OLAT … static const struct reg_default mcp23x08_defaults[] = …; static const struct regmap_range mcp23x08_volatile_range = …; static const struct regmap_access_table mcp23x08_volatile_table = …; static const struct regmap_range mcp23x08_precious_range = …; static const struct regmap_access_table mcp23x08_precious_table = …; const struct regmap_config mcp23x08_regmap = …; EXPORT_SYMBOL_GPL(…); static const struct reg_default mcp23x17_defaults[] = …; static const struct regmap_range mcp23x17_volatile_range = …; static const struct regmap_access_table mcp23x17_volatile_table = …; static const struct regmap_range mcp23x17_precious_range = …; static const struct regmap_access_table mcp23x17_precious_table = …; const struct regmap_config mcp23x17_regmap = …; EXPORT_SYMBOL_GPL(…); static int mcp_read(struct mcp23s08 *mcp, unsigned int reg, unsigned int *val) { … } static int mcp_write(struct mcp23s08 *mcp, unsigned int reg, unsigned int val) { … } static int mcp_update_bits(struct mcp23s08 *mcp, unsigned int reg, unsigned int mask, unsigned int val) { … } static int mcp_set_bit(struct mcp23s08 *mcp, unsigned int reg, unsigned int pin, bool enabled) { … } static const struct pinctrl_pin_desc mcp23x08_pins[] = …; static const struct pinctrl_pin_desc mcp23x17_pins[] = …; static int mcp_pinctrl_get_groups_count(struct pinctrl_dev *pctldev) { … } static const char *mcp_pinctrl_get_group_name(struct pinctrl_dev *pctldev, unsigned int group) { … } static int mcp_pinctrl_get_group_pins(struct pinctrl_dev *pctldev, unsigned int group, const unsigned int **pins, unsigned int *num_pins) { … } static const struct pinctrl_ops mcp_pinctrl_ops = …; static int mcp_pinconf_get(struct pinctrl_dev *pctldev, unsigned int pin, unsigned long *config) { … } static int mcp_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin, unsigned long *configs, unsigned int num_configs) { … } static const struct pinconf_ops mcp_pinconf_ops = …; /*----------------------------------------------------------------------*/ static int mcp23s08_direction_input(struct gpio_chip *chip, unsigned offset) { … } static int mcp23s08_get(struct gpio_chip *chip, unsigned offset) { … } static int mcp23s08_get_multiple(struct gpio_chip *chip, unsigned long *mask, unsigned long *bits) { … } static int __mcp23s08_set(struct mcp23s08 *mcp, unsigned mask, bool value) { … } static void mcp23s08_set(struct gpio_chip *chip, unsigned offset, int value) { … } static void mcp23s08_set_multiple(struct gpio_chip *chip, unsigned long *mask, unsigned long *bits) { … } static int mcp23s08_direction_output(struct gpio_chip *chip, unsigned offset, int value) { … } /*----------------------------------------------------------------------*/ static irqreturn_t mcp23s08_irq(int irq, void *data) { … } static void mcp23s08_irq_mask(struct irq_data *data) { … } static void mcp23s08_irq_unmask(struct irq_data *data) { … } static int mcp23s08_irq_set_type(struct irq_data *data, unsigned int type) { … } static void mcp23s08_irq_bus_lock(struct irq_data *data) { … } static void mcp23s08_irq_bus_unlock(struct irq_data *data) { … } static int mcp23s08_irq_setup(struct mcp23s08 *mcp) { … } static void mcp23s08_irq_print_chip(struct irq_data *d, struct seq_file *p) { … } static const struct irq_chip mcp23s08_irq_chip = …; /*----------------------------------------------------------------------*/ int mcp23s08_probe_one(struct mcp23s08 *mcp, struct device *dev, unsigned int addr, unsigned int type, unsigned int base) { … } EXPORT_SYMBOL_GPL(…); MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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