// SPDX-License-Identifier: GPL-2.0-or-later /* * GPIO driver for LPC32xx SoC * * Author: Kevin Wells <[email protected]> * * Copyright (C) 2010 NXP Semiconductors */ #include <linux/kernel.h> #include <linux/init.h> #include <linux/io.h> #include <linux/errno.h> #include <linux/gpio/driver.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/module.h> #define LPC32XX_GPIO_P3_INP_STATE … #define LPC32XX_GPIO_P3_OUTP_SET … #define LPC32XX_GPIO_P3_OUTP_CLR … #define LPC32XX_GPIO_P3_OUTP_STATE … #define LPC32XX_GPIO_P2_DIR_SET … #define LPC32XX_GPIO_P2_DIR_CLR … #define LPC32XX_GPIO_P2_DIR_STATE … #define LPC32XX_GPIO_P2_INP_STATE … #define LPC32XX_GPIO_P2_OUTP_SET … #define LPC32XX_GPIO_P2_OUTP_CLR … #define LPC32XX_GPIO_P2_MUX_SET … #define LPC32XX_GPIO_P2_MUX_CLR … #define LPC32XX_GPIO_P2_MUX_STATE … #define LPC32XX_GPIO_P0_INP_STATE … #define LPC32XX_GPIO_P0_OUTP_SET … #define LPC32XX_GPIO_P0_OUTP_CLR … #define LPC32XX_GPIO_P0_OUTP_STATE … #define LPC32XX_GPIO_P0_DIR_SET … #define LPC32XX_GPIO_P0_DIR_CLR … #define LPC32XX_GPIO_P0_DIR_STATE … #define LPC32XX_GPIO_P1_INP_STATE … #define LPC32XX_GPIO_P1_OUTP_SET … #define LPC32XX_GPIO_P1_OUTP_CLR … #define LPC32XX_GPIO_P1_OUTP_STATE … #define LPC32XX_GPIO_P1_DIR_SET … #define LPC32XX_GPIO_P1_DIR_CLR … #define LPC32XX_GPIO_P1_DIR_STATE … #define GPIO012_PIN_TO_BIT(x) … #define GPIO3_PIN_TO_BIT(x) … #define GPO3_PIN_TO_BIT(x) … #define GPIO012_PIN_IN_SEL(x, y) … #define GPIO3_PIN_IN_SHIFT(x) … #define GPIO3_PIN_IN_SEL(x, y) … #define GPIO3_PIN5_IN_SEL(x) … #define GPI3_PIN_IN_SEL(x, y) … #define GPO3_PIN_IN_SEL(x, y) … #define LPC32XX_GPIO_P0_MAX … #define LPC32XX_GPIO_P1_MAX … #define LPC32XX_GPIO_P2_MAX … #define LPC32XX_GPIO_P3_MAX … #define LPC32XX_GPI_P3_MAX … #define LPC32XX_GPO_P3_MAX … #define LPC32XX_GPIO_P0_GRP … #define LPC32XX_GPIO_P1_GRP … #define LPC32XX_GPIO_P2_GRP … #define LPC32XX_GPIO_P3_GRP … #define LPC32XX_GPI_P3_GRP … #define LPC32XX_GPO_P3_GRP … struct gpio_regs { … }; /* * GPIO names */ static const char *gpio_p0_names[LPC32XX_GPIO_P0_MAX] = …; static const char *gpio_p1_names[LPC32XX_GPIO_P1_MAX] = …; static const char *gpio_p2_names[LPC32XX_GPIO_P2_MAX] = …; static const char *gpio_p3_names[LPC32XX_GPIO_P3_MAX] = …; static const char *gpi_p3_names[LPC32XX_GPI_P3_MAX] = …; static const char *gpo_p3_names[LPC32XX_GPO_P3_MAX] = …; static struct gpio_regs gpio_grp_regs_p0 = …; static struct gpio_regs gpio_grp_regs_p1 = …; static struct gpio_regs gpio_grp_regs_p2 = …; static struct gpio_regs gpio_grp_regs_p3 = …; struct lpc32xx_gpio_chip { … }; static inline u32 gpreg_read(struct lpc32xx_gpio_chip *group, unsigned long offset) { … } static inline void gpreg_write(struct lpc32xx_gpio_chip *group, u32 val, unsigned long offset) { … } static void __set_gpio_dir_p012(struct lpc32xx_gpio_chip *group, unsigned pin, int input) { … } static void __set_gpio_dir_p3(struct lpc32xx_gpio_chip *group, unsigned pin, int input) { … } static void __set_gpio_level_p012(struct lpc32xx_gpio_chip *group, unsigned pin, int high) { … } static void __set_gpio_level_p3(struct lpc32xx_gpio_chip *group, unsigned pin, int high) { … } static void __set_gpo_level_p3(struct lpc32xx_gpio_chip *group, unsigned pin, int high) { … } static int __get_gpio_state_p012(struct lpc32xx_gpio_chip *group, unsigned pin) { … } static int __get_gpio_state_p3(struct lpc32xx_gpio_chip *group, unsigned pin) { … } static int __get_gpi_state_p3(struct lpc32xx_gpio_chip *group, unsigned pin) { … } static int __get_gpo_state_p3(struct lpc32xx_gpio_chip *group, unsigned pin) { … } /* * GPIO primitives. */ static int lpc32xx_gpio_dir_input_p012(struct gpio_chip *chip, unsigned pin) { … } static int lpc32xx_gpio_dir_input_p3(struct gpio_chip *chip, unsigned pin) { … } static int lpc32xx_gpio_dir_in_always(struct gpio_chip *chip, unsigned pin) { … } static int lpc32xx_gpio_get_value_p012(struct gpio_chip *chip, unsigned pin) { … } static int lpc32xx_gpio_get_value_p3(struct gpio_chip *chip, unsigned pin) { … } static int lpc32xx_gpi_get_value(struct gpio_chip *chip, unsigned pin) { … } static int lpc32xx_gpio_dir_output_p012(struct gpio_chip *chip, unsigned pin, int value) { … } static int lpc32xx_gpio_dir_output_p3(struct gpio_chip *chip, unsigned pin, int value) { … } static int lpc32xx_gpio_dir_out_always(struct gpio_chip *chip, unsigned pin, int value) { … } static void lpc32xx_gpio_set_value_p012(struct gpio_chip *chip, unsigned pin, int value) { … } static void lpc32xx_gpio_set_value_p3(struct gpio_chip *chip, unsigned pin, int value) { … } static void lpc32xx_gpo_set_value(struct gpio_chip *chip, unsigned pin, int value) { … } static int lpc32xx_gpo_get_value(struct gpio_chip *chip, unsigned pin) { … } static int lpc32xx_gpio_request(struct gpio_chip *chip, unsigned pin) { … } static int lpc32xx_gpio_to_irq_p01(struct gpio_chip *chip, unsigned offset) { … } static int lpc32xx_gpio_to_irq_gpio_p3(struct gpio_chip *chip, unsigned offset) { … } static int lpc32xx_gpio_to_irq_gpi_p3(struct gpio_chip *chip, unsigned offset) { … } static struct lpc32xx_gpio_chip lpc32xx_gpiochip[] = …; static int lpc32xx_of_xlate(struct gpio_chip *gc, const struct of_phandle_args *gpiospec, u32 *flags) { … } static int lpc32xx_gpio_probe(struct platform_device *pdev) { … } static const struct of_device_id lpc32xx_gpio_of_match[] = …; MODULE_DEVICE_TABLE(of, lpc32xx_gpio_of_match); static struct platform_driver lpc32xx_gpio_driver = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …; MODULE_DESCRIPTION(…) …;
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