// SPDX-License-Identifier: GPL-2.0
/*
 * Allwinner H6 R_PIO pin controller driver
 *
 * Copyright (C) 2017 Icenowy Zheng <icenowy@aosc.io>
 *
 * Based on pinctrl-sun6i-a31-r.c, which is:
 *   Copyright (C) 2014 Boris Brezillon
 *   Boris Brezillon <boris.brezillon@free-electrons.com>
 *   Copyright (C) 2014 Maxime Ripard
 *   Maxime Ripard <maxime.ripard@free-electrons.com>
 */

#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/pinctrl/pinctrl.h>
#include <linux/reset.h>

#include "pinctrl-sunxi.h"

static const struct sunxi_desc_pin sun50i_h6_r_pins[] = {
	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 0),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "s_rsb"),		/* SCK */
		  SUNXI_FUNCTION(0x3, "s_i2c"),		/* SCK */
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 0)),	/* PL_EINT0 */
	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 1),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "s_rsb"),		/* SDA */
		  SUNXI_FUNCTION(0x3, "s_i2c"),		/* SDA */
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 1)),	/* PL_EINT1 */
	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 2),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "s_uart"),	/* TX */
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 2)),	/* PL_EINT2 */
	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 3),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "s_uart"),	/* RX */
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 3)),	/* PL_EINT3 */
	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 4),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "s_jtag"),	/* MS */
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 4)),	/* PL_EINT4 */
	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 5),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "s_jtag"),	/* CK */
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 5)),	/* PL_EINT5 */
	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 6),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "s_jtag"),	/* DO */
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 6)),	/* PL_EINT6 */
	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 7),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "s_jtag"),	/* DI */
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 7)),	/* PL_EINT7 */
	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 8),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "s_pwm"),
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 8)),	/* PL_EINT8 */
	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 9),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "s_cir_rx"),
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 9)),	/* PL_EINT9 */
	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 10),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x2, "s_w1"),
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 0, 10)),	/* PL_EINT10 */
	/* Hole */
	SUNXI_PIN(SUNXI_PINCTRL_PIN(M, 0),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 1, 0)),	/* PM_EINT0 */
	SUNXI_PIN(SUNXI_PINCTRL_PIN(M, 1),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 1, 1)),	/* PM_EINT1 */
	SUNXI_PIN(SUNXI_PINCTRL_PIN(M, 2),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 1, 2),	/* PM_EINT2 */
		  SUNXI_FUNCTION(0x3, "1wire")),
	SUNXI_PIN(SUNXI_PINCTRL_PIN(M, 3),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 1, 3)),	/* PM_EINT3 */
	SUNXI_PIN(SUNXI_PINCTRL_PIN(M, 4),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION_IRQ_BANK(0x6, 1, 4)),	/* PM_EINT4 */
};

static const struct sunxi_pinctrl_desc sun50i_h6_r_pinctrl_data = {
	.pins = sun50i_h6_r_pins,
	.npins = ARRAY_SIZE(sun50i_h6_r_pins),
	.pin_base = PL_BASE,
	.irq_banks = 2,
	.io_bias_cfg_variant = BIAS_VOLTAGE_PIO_POW_MODE_SEL,
};

static int sun50i_h6_r_pinctrl_probe(struct platform_device *pdev)
{
	return sunxi_pinctrl_init(pdev,
				  &sun50i_h6_r_pinctrl_data);
}

static const struct of_device_id sun50i_h6_r_pinctrl_match[] = {
	{ .compatible = "allwinner,sun50i-h6-r-pinctrl", },
	{}
};

static struct platform_driver sun50i_h6_r_pinctrl_driver = {
	.probe	= sun50i_h6_r_pinctrl_probe,
	.driver	= {
		.name		= "sun50i-h6-r-pinctrl",
		.of_match_table	= sun50i_h6_r_pinctrl_match,
	},
};
builtin_platform_driver(sun50i_h6_r_pinctrl_driver);