// SPDX-License-Identifier: GPL-2.0-or-later /* * GPIO driver for Fintek and Nuvoton Super-I/O chips * * Copyright (C) 2010-2013 LaCie * * Author: Simon Guinot <[email protected]> */ #define DRVNAME … #define pr_fmt(fmt) … #include <linux/module.h> #include <linux/init.h> #include <linux/platform_device.h> #include <linux/io.h> #include <linux/gpio/driver.h> #include <linux/bitops.h> /* * Super-I/O registers */ #define SIO_LDSEL … #define SIO_DEVID … #define SIO_UNLOCK_KEY … #define SIO_LOCK_KEY … /* * Fintek devices. */ #define SIO_FINTEK_DEVREV … #define SIO_FINTEK_MANID … #define SIO_FINTEK_ID … #define SIO_F71869_ID … #define SIO_F71869A_ID … #define SIO_F71882_ID … #define SIO_F71889_ID … #define SIO_F71889A_ID … #define SIO_F81866_ID … #define SIO_F81804_ID … #define SIO_F81865_ID … #define SIO_LD_GPIO_FINTEK … /* * Nuvoton devices. */ #define SIO_NCT6126D_ID … #define SIO_LD_GPIO_NUVOTON … enum chips { … }; static const char * const f7188x_names[] = …; struct f7188x_sio { … }; struct f7188x_gpio_bank { … }; struct f7188x_gpio_data { … }; /* * Super-I/O functions. */ static inline int superio_inb(int base, int reg) { … } static int superio_inw(int base, int reg) { … } static inline void superio_outb(int base, int reg, int val) { … } static inline int superio_enter(int base) { … } static inline void superio_select(int base, int ld) { … } static inline void superio_exit(int base) { … } /* * GPIO chip. */ static int f7188x_gpio_get_direction(struct gpio_chip *chip, unsigned offset); static int f7188x_gpio_direction_in(struct gpio_chip *chip, unsigned offset); static int f7188x_gpio_get(struct gpio_chip *chip, unsigned offset); static int f7188x_gpio_direction_out(struct gpio_chip *chip, unsigned offset, int value); static void f7188x_gpio_set(struct gpio_chip *chip, unsigned offset, int value); static int f7188x_gpio_set_config(struct gpio_chip *chip, unsigned offset, unsigned long config); #define F7188X_GPIO_BANK(_ngpio, _regbase, _label) … #define f7188x_gpio_dir(base) … #define f7188x_gpio_data_out(base) … #define f7188x_gpio_data_in(base) … /* Output mode register (0:open drain 1:push-pull). */ #define f7188x_gpio_out_mode(base) … #define f7188x_gpio_dir_invert(type) … #define f7188x_gpio_data_single(type) … static struct f7188x_gpio_bank f71869_gpio_bank[] = …; static struct f7188x_gpio_bank f71869a_gpio_bank[] = …; static struct f7188x_gpio_bank f71882_gpio_bank[] = …; static struct f7188x_gpio_bank f71889a_gpio_bank[] = …; static struct f7188x_gpio_bank f71889_gpio_bank[] = …; static struct f7188x_gpio_bank f81866_gpio_bank[] = …; static struct f7188x_gpio_bank f81804_gpio_bank[] = …; static struct f7188x_gpio_bank f81865_gpio_bank[] = …; static struct f7188x_gpio_bank nct6126d_gpio_bank[] = …; static int f7188x_gpio_get_direction(struct gpio_chip *chip, unsigned offset) { … } static int f7188x_gpio_direction_in(struct gpio_chip *chip, unsigned offset) { … } static int f7188x_gpio_get(struct gpio_chip *chip, unsigned offset) { … } static int f7188x_gpio_direction_out(struct gpio_chip *chip, unsigned offset, int value) { … } static void f7188x_gpio_set(struct gpio_chip *chip, unsigned offset, int value) { … } static int f7188x_gpio_set_config(struct gpio_chip *chip, unsigned offset, unsigned long config) { … } /* * Platform device and driver. */ static int f7188x_gpio_probe(struct platform_device *pdev) { … } static int __init f7188x_find(int addr, struct f7188x_sio *sio) { … } static struct platform_device *f7188x_gpio_pdev; static int __init f7188x_gpio_device_add(const struct f7188x_sio *sio) { … } /* * Try to match a supported Fintek device by reading the (hard-wired) * configuration I/O ports. If available, then register both the platform * device and driver to support the GPIOs. */ static struct platform_driver f7188x_gpio_driver = …; static int __init f7188x_gpio_init(void) { … } subsys_initcall(f7188x_gpio_init); static void __exit f7188x_gpio_exit(void) { … } module_exit(f7188x_gpio_exit); MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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