// SPDX-License-Identifier: GPL-2.0-only /* * Broadcom Kona GPIO Driver * * Author: Broadcom Corporation <[email protected]> * Copyright (C) 2012-2014 Broadcom Corporation */ #include <linux/bitops.h> #include <linux/err.h> #include <linux/gpio/driver.h> #include <linux/init.h> #include <linux/io.h> #include <linux/irqdomain.h> #include <linux/irqchip/chained_irq.h> #include <linux/mod_devicetable.h> #include <linux/platform_device.h> #include <linux/property.h> #define BCM_GPIO_PASSWD … #define GPIO_PER_BANK … #define GPIO_MAX_BANK_NUM … #define GPIO_BANK(gpio) … #define GPIO_BIT(gpio) … /* There is a GPIO control register for each GPIO */ #define GPIO_CONTROL(gpio) … /* The remaining registers are per GPIO bank */ #define GPIO_OUT_STATUS(bank) … #define GPIO_IN_STATUS(bank) … #define GPIO_OUT_SET(bank) … #define GPIO_OUT_CLEAR(bank) … #define GPIO_INT_STATUS(bank) … #define GPIO_INT_MASK(bank) … #define GPIO_INT_MSKCLR(bank) … #define GPIO_PWD_STATUS(bank) … #define GPIO_GPPWR_OFFSET … #define GPIO_GPCTR0_DBR_SHIFT … #define GPIO_GPCTR0_DBR_MASK … #define GPIO_GPCTR0_ITR_SHIFT … #define GPIO_GPCTR0_ITR_MASK … #define GPIO_GPCTR0_ITR_CMD_RISING_EDGE … #define GPIO_GPCTR0_ITR_CMD_FALLING_EDGE … #define GPIO_GPCTR0_ITR_CMD_BOTH_EDGE … #define GPIO_GPCTR0_IOTR_MASK … #define GPIO_GPCTR0_IOTR_CMD_0UTPUT … #define GPIO_GPCTR0_IOTR_CMD_INPUT … #define GPIO_GPCTR0_DB_ENABLE_MASK … #define LOCK_CODE … #define UNLOCK_CODE … struct bcm_kona_gpio { … }; struct bcm_kona_gpio_bank { … }; static inline void bcm_kona_gpio_write_lock_regs(void __iomem *reg_base, int bank_id, u32 lockcode) { … } static void bcm_kona_gpio_lock_gpio(struct bcm_kona_gpio *kona_gpio, unsigned gpio) { … } static void bcm_kona_gpio_unlock_gpio(struct bcm_kona_gpio *kona_gpio, unsigned gpio) { … } static int bcm_kona_gpio_get_dir(struct gpio_chip *chip, unsigned gpio) { … } static void bcm_kona_gpio_set(struct gpio_chip *chip, unsigned gpio, int value) { … } static int bcm_kona_gpio_get(struct gpio_chip *chip, unsigned gpio) { … } static int bcm_kona_gpio_request(struct gpio_chip *chip, unsigned gpio) { … } static void bcm_kona_gpio_free(struct gpio_chip *chip, unsigned gpio) { … } static int bcm_kona_gpio_direction_input(struct gpio_chip *chip, unsigned gpio) { … } static int bcm_kona_gpio_direction_output(struct gpio_chip *chip, unsigned gpio, int value) { … } static int bcm_kona_gpio_to_irq(struct gpio_chip *chip, unsigned gpio) { … } static int bcm_kona_gpio_set_debounce(struct gpio_chip *chip, unsigned gpio, unsigned debounce) { … } static int bcm_kona_gpio_set_config(struct gpio_chip *chip, unsigned gpio, unsigned long config) { … } static const struct gpio_chip template_chip = …; static void bcm_kona_gpio_irq_ack(struct irq_data *d) { … } static void bcm_kona_gpio_irq_mask(struct irq_data *d) { … } static void bcm_kona_gpio_irq_unmask(struct irq_data *d) { … } static int bcm_kona_gpio_irq_set_type(struct irq_data *d, unsigned int type) { … } static void bcm_kona_gpio_irq_handler(struct irq_desc *desc) { … } static int bcm_kona_gpio_irq_reqres(struct irq_data *d) { … } static void bcm_kona_gpio_irq_relres(struct irq_data *d) { … } static struct irq_chip bcm_gpio_irq_chip = …; static struct of_device_id const bcm_kona_gpio_of_match[] = …; /* * This lock class tells lockdep that GPIO irqs are in a different * category than their parents, so it won't report false recursion. */ static struct lock_class_key gpio_lock_class; static struct lock_class_key gpio_request_class; static int bcm_kona_gpio_irq_map(struct irq_domain *d, unsigned int irq, irq_hw_number_t hwirq) { … } static void bcm_kona_gpio_irq_unmap(struct irq_domain *d, unsigned int irq) { … } static const struct irq_domain_ops bcm_kona_irq_ops = …; static void bcm_kona_gpio_reset(struct bcm_kona_gpio *kona_gpio) { … } static int bcm_kona_gpio_probe(struct platform_device *pdev) { … } static struct platform_driver bcm_kona_gpio_driver = …; builtin_platform_driver(…) …;
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