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1 | /* |
2 | * Allwinner A23 SoCs special pins pinctrl driver. | |
3 | * | |
4 | * Copyright (C) 2014 Chen-Yu Tsai | |
5 | * Chen-Yu Tsai <wens@csie.org> | |
6 | * | |
7 | * Copyright (C) 2014 Boris Brezillon | |
8 | * Boris Brezillon <boris.brezillon@free-electrons.com> | |
9 | * | |
10 | * Copyright (C) 2014 Maxime Ripard | |
11 | * Maxime Ripard <maxime.ripard@free-electrons.com> | |
12 | * | |
13 | * This file is licensed under the terms of the GNU General Public | |
14 | * License version 2. This program is licensed "as is" without any | |
15 | * warranty of any kind, whether express or implied. | |
16 | */ | |
17 | ||
18 | #include <linux/module.h> | |
19 | #include <linux/platform_device.h> | |
20 | #include <linux/of.h> | |
21 | #include <linux/of_device.h> | |
22 | #include <linux/pinctrl/pinctrl.h> | |
23 | #include <linux/reset.h> | |
24 | ||
25 | #include "pinctrl-sunxi.h" | |
26 | ||
27 | static const struct sunxi_desc_pin sun8i_a23_r_pins[] = { | |
28 | SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 0), | |
29 | SUNXI_FUNCTION(0x0, "gpio_in"), | |
30 | SUNXI_FUNCTION(0x1, "gpio_out"), | |
31 | SUNXI_FUNCTION(0x2, "s_rsb"), /* SCK */ | |
32 | SUNXI_FUNCTION(0x3, "s_twi"), /* SCK */ | |
33 | SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 0)), /* PL_EINT0 */ | |
34 | SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 1), | |
35 | SUNXI_FUNCTION(0x0, "gpio_in"), | |
36 | SUNXI_FUNCTION(0x1, "gpio_out"), | |
37 | SUNXI_FUNCTION(0x2, "s_rsb"), /* SDA */ | |
38 | SUNXI_FUNCTION(0x3, "s_twi"), /* SDA */ | |
39 | SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 1)), /* PL_EINT1 */ | |
40 | SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 2), | |
41 | SUNXI_FUNCTION(0x0, "gpio_in"), | |
42 | SUNXI_FUNCTION(0x1, "gpio_out"), | |
43 | SUNXI_FUNCTION(0x2, "s_uart"), /* TX */ | |
44 | SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 2)), /* PL_EINT2 */ | |
45 | SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 3), | |
46 | SUNXI_FUNCTION(0x0, "gpio_in"), | |
47 | SUNXI_FUNCTION(0x1, "gpio_out"), | |
48 | SUNXI_FUNCTION(0x2, "s_uart"), /* RX */ | |
49 | SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 3)), /* PL_EINT3 */ | |
50 | SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 4), | |
51 | SUNXI_FUNCTION(0x0, "gpio_in"), | |
52 | SUNXI_FUNCTION(0x1, "gpio_out"), | |
53 | SUNXI_FUNCTION(0x3, "s_jtag"), /* MS */ | |
54 | SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 4)), /* PL_EINT4 */ | |
55 | SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 5), | |
56 | SUNXI_FUNCTION(0x0, "gpio_in"), | |
57 | SUNXI_FUNCTION(0x1, "gpio_out"), | |
58 | SUNXI_FUNCTION(0x3, "s_jtag"), /* CK */ | |
59 | SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 5)), /* PL_EINT5 */ | |
60 | SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 6), | |
61 | SUNXI_FUNCTION(0x0, "gpio_in"), | |
62 | SUNXI_FUNCTION(0x1, "gpio_out"), | |
63 | SUNXI_FUNCTION(0x3, "s_jtag"), /* DO */ | |
64 | SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 6)), /* PL_EINT6 */ | |
65 | SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 7), | |
66 | SUNXI_FUNCTION(0x0, "gpio_in"), | |
67 | SUNXI_FUNCTION(0x1, "gpio_out"), | |
68 | SUNXI_FUNCTION(0x3, "s_jtag"), /* DI */ | |
69 | SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 7)), /* PL_EINT7 */ | |
70 | SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 8), | |
71 | SUNXI_FUNCTION(0x0, "gpio_in"), | |
72 | SUNXI_FUNCTION(0x1, "gpio_out"), | |
73 | SUNXI_FUNCTION(0x2, "s_twi"), /* SCK */ | |
74 | SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 8)), /* PL_EINT8 */ | |
75 | SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 9), | |
76 | SUNXI_FUNCTION(0x0, "gpio_in"), | |
77 | SUNXI_FUNCTION(0x1, "gpio_out"), | |
78 | SUNXI_FUNCTION(0x2, "s_twi"), /* SDA */ | |
79 | SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 9)), /* PL_EINT9 */ | |
80 | SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 10), | |
81 | SUNXI_FUNCTION(0x0, "gpio_in"), | |
82 | SUNXI_FUNCTION(0x1, "gpio_out"), | |
83 | SUNXI_FUNCTION(0x2, "s_pwm"), | |
84 | SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 10)), /* PL_EINT10 */ | |
85 | SUNXI_PIN(SUNXI_PINCTRL_PIN(L, 11), | |
86 | SUNXI_FUNCTION(0x0, "gpio_in"), | |
87 | SUNXI_FUNCTION(0x1, "gpio_out"), | |
88 | SUNXI_FUNCTION_IRQ_BANK(0x4, 0, 11)), /* PL_EINT11 */ | |
89 | }; | |
90 | ||
91 | static const struct sunxi_pinctrl_desc sun8i_a23_r_pinctrl_data = { | |
92 | .pins = sun8i_a23_r_pins, | |
93 | .npins = ARRAY_SIZE(sun8i_a23_r_pins), | |
94 | .pin_base = PL_BASE, | |
95 | .irq_banks = 1, | |
96 | }; | |
97 | ||
98 | static int sun8i_a23_r_pinctrl_probe(struct platform_device *pdev) | |
99 | { | |
100 | struct reset_control *rstc; | |
101 | int ret; | |
102 | ||
103 | rstc = devm_reset_control_get(&pdev->dev, NULL); | |
104 | if (IS_ERR(rstc)) { | |
105 | dev_err(&pdev->dev, "Reset controller missing\n"); | |
106 | return PTR_ERR(rstc); | |
107 | } | |
108 | ||
109 | ret = reset_control_deassert(rstc); | |
110 | if (ret) | |
111 | return ret; | |
112 | ||
113 | ret = sunxi_pinctrl_init(pdev, | |
114 | &sun8i_a23_r_pinctrl_data); | |
115 | ||
116 | if (ret) | |
117 | reset_control_assert(rstc); | |
118 | ||
119 | return ret; | |
120 | } | |
121 | ||
baa9946e | 122 | static const struct of_device_id sun8i_a23_r_pinctrl_match[] = { |
d22bf40f CYT |
123 | { .compatible = "allwinner,sun8i-a23-r-pinctrl", }, |
124 | {} | |
125 | }; | |
126 | MODULE_DEVICE_TABLE(of, sun8i_a23_r_pinctrl_match); | |
127 | ||
128 | static struct platform_driver sun8i_a23_r_pinctrl_driver = { | |
129 | .probe = sun8i_a23_r_pinctrl_probe, | |
130 | .driver = { | |
131 | .name = "sun8i-a23-r-pinctrl", | |
d22bf40f CYT |
132 | .of_match_table = sun8i_a23_r_pinctrl_match, |
133 | }, | |
134 | }; | |
135 | module_platform_driver(sun8i_a23_r_pinctrl_driver); | |
136 | ||
137 | MODULE_AUTHOR("Chen-Yu Tsai <wens@csie.org>"); | |
138 | MODULE_AUTHOR("Boris Brezillon <boris.brezillon@free-electrons.com"); | |
139 | MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com"); | |
140 | MODULE_DESCRIPTION("Allwinner A23 R_PIO pinctrl driver"); | |
141 | MODULE_LICENSE("GPL"); |