// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) Maxime Coquelin 2015
* Copyright (C) STMicroelectronics 2017
* Author: Maxime Coquelin <mcoquelin.stm32@gmail.com>
*
* Heavily based on Mediatek's pinctrl driver
*/
#include <linux/clk.h>
#include <linux/gpio/driver.h>
#include <linux/hwspinlock.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/mfd/syscon.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_device.h>
#include <linux/of_irq.h>
#include <linux/pinctrl/consumer.h>
#include <linux/pinctrl/machine.h>
#include <linux/pinctrl/pinconf.h>
#include <linux/pinctrl/pinconf-generic.h>
#include <linux/pinctrl/pinctrl.h>
#include <linux/pinctrl/pinmux.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/reset.h>
#include <linux/slab.h>
#include "../core.h"
#include "../pinconf.h"
#include "../pinctrl-utils.h"
#include "pinctrl-stm32.h"
#define STM32_GPIO_MODER 0x00
#define STM32_GPIO_TYPER 0x04
#define STM32_GPIO_SPEEDR 0x08
#define STM32_GPIO_PUPDR 0x0c
#define STM32_GPIO_IDR 0x10
#define STM32_GPIO_ODR 0x14
#define STM32_GPIO_BSRR 0x18
#define STM32_GPIO_LCKR 0x1c
#define STM32_GPIO_AFRL 0x20
#define STM32_GPIO_AFRH 0x24
/* custom bitfield to backup pin status */
#define STM32_GPIO_BKP_MODE_SHIFT 0
#define STM32_GPIO_BKP_MODE_MASK GENMASK(1, 0)
#define STM32_GPIO_BKP_ALT_SHIFT 2
#define STM32_GPIO_BKP_ALT_MASK GENMASK(5, 2)
#define STM32_GPIO_BKP_SPEED_SHIFT 6
#define STM32_GPIO_BKP_SPEED_MASK GENMASK(7, 6)
#define STM32_GPIO_BKP_PUPD_SHIFT 8
#define STM32_GPIO_BKP_PUPD_MASK GENMASK(9, 8)
#define STM32_GPIO_BKP_TYPE 10
#define STM32_GPIO_BKP_VAL 11
#define STM32_GPIO_PINS_PER_BANK 16
#define STM32_GPIO_IRQ_LINE 16
#define SYSCFG_IRQMUX_MASK GENMASK(3, 0)
#define gpio_range_to_bank(chip) \
container_of(chip, struct stm32_gpio_bank, range)
#define HWSPNLCK_TIMEOUT 1000 /* usec */
static const char * const stm32_gpio_functions[] = {
"gpio", "af0", "af1",
"af2", "af3", "af4",
"af5", "af6", "af7",
"af8", "af9", "af10",
"af11", "af12", "af13",
"af14", "af15", "analog",
};
struct stm32_pinctrl_group {
const char *name;
unsigned long config;
unsigned pin;
};
struct stm32_gpio_bank {
void __iomem *base;
struct clk *clk;
struct reset_control *rstc;
spinlock_t lock;
struct gpio_chip gpio_chip;
struct pinctrl_gpio_range range;
struct fwnode_handle *fwnode;
struct irq_domain *domain;
u32 bank_nr;
u32 bank_ioport_nr;
u32 pin_backup[STM32_GPIO_PINS_PER_BANK];
u8 irq_type[STM32_GPIO_PINS_PER_BANK];
};
struct stm32_pinctrl {
struct device *dev;
struct pinctrl_dev *pctl_dev;
struct pinctrl_desc pctl_desc;
struct stm32_pinctrl_group *groups;
unsigned ngroups;
const char **grp_names;
struct stm32_gpio_bank *banks;
unsigned nbanks;
const struct stm32_pinctrl_match_data *match_data;
struct irq_domain *domain;
struct regmap
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