1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Allwinner H616 R_PIO pin controller driver
4  *
5  * Copyright (C) 2020 Arm Ltd.
6  * Based on former work, which is:
7  *   Copyright (C) 2017 Icenowy Zheng <icenowy@aosc.io>
8  */
9 
10 #include <linux/init.h>
11 #include <linux/platform_device.h>
12 #include <linux/of.h>
13 #include <linux/of_device.h>
14 #include <linux/pinctrl/pinctrl.h>
15 #include <linux/reset.h>
16 
17 #include "pinctrl-sunxi.h"
18 
19 static const struct sunxi_desc_pin sun50i_h616_r_pins[] = {
20 	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 0),
21 		  SUNXI_FUNCTION(0x0, "gpio_in"),
22 		  SUNXI_FUNCTION(0x1, "gpio_out"),
23 		  SUNXI_FUNCTION(0x2, "s_rsb"),		/* SCK */
24 		  SUNXI_FUNCTION(0x3, "s_i2c")),	/* SCK */
25 	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 1),
26 		  SUNXI_FUNCTION(0x0, "gpio_in"),
27 		  SUNXI_FUNCTION(0x1, "gpio_out"),
28 		  SUNXI_FUNCTION(0x2, "s_rsb"),		/* SDA */
29 		  SUNXI_FUNCTION(0x3, "s_i2c")),	/* SDA */
30 };
31 
32 static const struct sunxi_pinctrl_desc sun50i_h616_r_pinctrl_data = {
33 	.pins = sun50i_h616_r_pins,
34 	.npins = ARRAY_SIZE(sun50i_h616_r_pins),
35 	.pin_base = PL_BASE,
36 };
37 
38 static int sun50i_h616_r_pinctrl_probe(struct platform_device *pdev)
39 {
40 	return sunxi_pinctrl_init(pdev,
41 				  &sun50i_h616_r_pinctrl_data);
42 }
43 
44 static const struct of_device_id sun50i_h616_r_pinctrl_match[] = {
45 	{ .compatible = "allwinner,sun50i-h616-r-pinctrl", },
46 	{}
47 };
48 
49 static struct platform_driver sun50i_h616_r_pinctrl_driver = {
50 	.probe	= sun50i_h616_r_pinctrl_probe,
51 	.driver	= {
52 		.name		= "sun50i-h616-r-pinctrl",
53 		.of_match_table	= sun50i_h616_r_pinctrl_match,
54 	},
55 };
56 builtin_platform_driver(sun50i_h616_r_pinctrl_driver);
57