path: root/drivers/mfd/adp5585.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Analog Devices ADP5585 I/O expander, PWM controller and keypad controller
 *
 * Copyright 2022 NXP
 * Copyright 2024 Ideas on Board Oy
 * Copyright 2025 Analog Devices Inc.
 */

#include <linux/array_size.h>
#include <linux/bitfield.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/gpio/consumer.h>
#include <linux/mfd/adp5585.h>
#include <linux/mfd/core.h>
#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/types.h>

enum {
	ADP5585_DEV_GPIO,
	ADP5585_DEV_PWM,
	ADP5585_DEV_INPUT,
	ADP5585_DEV_MAX
};

static const struct mfd_cell adp5585_devs[ADP5585_DEV_MAX] = {
	MFD_CELL_NAME("adp5585-gpio"),
	MFD_CELL_NAME("adp5585-pwm"),
	MFD_CELL_NAME("adp5585-keys"),
};

static const struct mfd_cell adp5589_devs[] = {
	MFD_CELL_NAME("adp5589-gpio"),
	MFD_CELL_NAME("adp5589-pwm"),
	MFD_CELL_NAME("adp5589-keys"),
};

static const struct regmap_range adp5585_volatile_ranges[] = {
	regmap_reg_range(ADP5585_ID, ADP5585_GPI_STATUS_B),
};

static const struct regmap_access_table adp5585_volatile_regs = {
	.yes_ranges = adp5585_volatile_ranges,
	.n_yes_ranges = ARRAY_SIZE(adp5585_volatile_ranges),
};

static const struct regmap_range adp5589_volatile_ranges[] = {
	regmap_reg_range(ADP5585_ID, ADP5589_GPI_STATUS_C),
};

static const struct regmap_access_table adp5589_volatile_regs = {
	.yes_ranges = adp5589_volatile_ranges,
	.n_yes_ranges = ARRAY_SIZE(adp5589_volatile_ranges),
};

/*
 * Chip variants differ in the default configuration of pull-up and pull-down
 * resistors, and therefore have different default register values:
 *
 * - The -00, -01 and -03 variants (collectively referred to as
 *   ADP5585_REGMAP_00) have pull-up on all GPIO pins by default.
 * - The -02 variant has no default pull-up or pull-down resistors.
 * - The -04 variant has default pull-down resistors on all GPIO pins.
 */

static const u8 adp5585_regmap_defaults_00[ADP5585_MAX_REG + 1] = {
	/* 0x00 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	/* 0x08 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	/* 0x10 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	/* 0x18 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	/* 0x20 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	/* 0x28 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	/* 0x30 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	/* 0x38 */ 0x00, 0x00, 0x00, 0x00, 0x00,
};

static const u8 adp5585_regmap_defaults_02[ADP5585_MAX_REG + 1] = {
	/* 0x00 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	/* 0x08 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	/* 0x10 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc3,
	/* 0x18 */ 0x03, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00,
	/* 0x20 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	/* 0x28 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	/* 0x30 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	/* 0x38 */ 0x00, 0x00, 0x00, 0x00, 0x00,
};

static const u8 adp5585_regmap_defaults_04[ADP5585_MAX_REG + 1] = {
	/* 0x00 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	/* 0x08 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	/* 0x10 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55,
	/* 0x18 */ 0x05, 0x55, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
	/* 0x20 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	/* 0x28 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	/* 0x30 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	/* 0x38 */ 0x00, 0x00, 0x00, 0x00, 0x00,
};

static const u8 adp5589_regmap_defaults_00[ADP5589_MAX_REG + 1] = {
	/* 0x00 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	/* 0x08 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	/* 0x10 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	/* 0x18 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,