summaryrefslogtreecommitdiff
path: root/drivers/pinctrl/sunxi/pinctrl-sun8i-a23-r.c
blob: 2292e05a397b4686e1b115e9de6df88c3d34c1e6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
/*
 * Allwinner A23 SoCs special pins pinctrl driver.
 *
 * Copyright (C) 2014 Chen-Yu Tsai
 * Chen-Yu Tsai <wens@csie.org>
 *
 * Copyright (C) 2014 Boris Brezillon
 * Boris Brezillon <boris.brezillon@free-electrons.com>
 *
 * Copyright (C) 2014 Maxime Ripard
 * Maxime Ripard <maxime.ripard@free-electrons.com>
 *
 * This file is licensed under the terms of the GNU General Public
 * License version 2.  This program is licensed "as is" without any
 * warranty of any kind, whether express or implied.
 */

#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 sun8i_a23_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_twi"),		/* SCK */
		  SUNXI_FUNCTION_IRQ_BANK(0x4, 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_twi"),		/* SDA */
		  SUNXI_FUNCTION_IRQ_BANK(0x4, 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(0x4, 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(0x4, 0, 3)),	/* PL_EINT3 */
	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 4),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x3, "s_jtag"),	/* MS */
		  SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 4)),	/* PL_EINT4 */
	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 5),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x3, "s_jtag"),	/* CK */
		  SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 5)),	/* PL_EINT5 */
	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 6),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x3, "s_jtag"),	/* DO */
		  SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 6)),	/* PL_EINT6 */
	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 7),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION(0x3, "s_jtag"),	/* DI */
		  SUNXI_FUNCTION_IRQ_BANK(0x4, 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_twi"),		/* SCK */
		  SUNXI_FUNCTION_IRQ_BANK(0x4, 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_twi"),		/* SDA */
		  SUNXI_FUNCTION_IRQ_BANK(0x4, 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_pwm"),
		  SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 10)),	/* PL_EINT10 */
	SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 11),
		  SUNXI_FUNCTION(0x0, "gpio_in"),
		  SUNXI_FUNCTION(0x1, "gpio_out"),
		  SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 11)),	/* PL_EINT11 */
};

static const struct sunxi_pinctrl_desc sun8i_a23_r_pinctrl_data = {
	.pins = sun8i_a23_r_pins,
	.npins = ARRAY_SIZE(sun8i_a23_r_pins),
	.pin_base = PL_BASE,
	.irq_banks = 1,
};

static int sun8i_a23_r_pinctrl_probe(struct platform_device *pdev)
{
	struct reset_control *rstc;
	int ret;

	rstc = devm_reset_control_get(&pdev->dev, NULL);
	if (IS_ERR(rstc)) {
		dev_err(&pdev->dev, "Reset controller missing\n");
		return PTR_ERR(rstc);
	}

	ret = reset_control_deassert(rstc);
	if (ret)
		return ret;

	ret = sunxi_pinctrl_init(pdev,
				 &sun8i_a23_r_pinctrl_data);

	if (ret)
		reset_control_assert(rstc);

	return ret;
}

static const struct of_device_id sun8i_a23_r_pinctrl_match[] = {
	{ .compatible = "allwinner,sun8i-a23-r-pinctrl", },
	{}
};

static struct platform_driver sun8i_a23_r_pinctrl_driver = {
	.probe	= sun8i_a23_r_pinctrl_probe,
	.driver	= {
		.name		= "sun8i-a23-r-pinctrl",
		.of_match_table	= sun8i_a23_r_pinctrl_match,
	},
};
builtin_platform_driver(sun8i_a23_r_pinctrl_driver);