1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * (C) Copyright 2019 Rockchip Electronics Co., Ltd
4  */
5 
6 #include <common.h>
7 #include <dm.h>
8 #include <dm/pinctrl.h>
9 #include <regmap.h>
10 #include <syscon.h>
11 
12 #include "pinctrl-rockchip.h"
13 
14 static struct rockchip_mux_recalced_data rk3128_mux_recalced_data[] = {
15 	{
16 		.num = 2,
17 		.pin = 20,
18 		.reg = 0xe8,
19 		.bit = 0,
20 		.mask = 0x7
21 	}, {
22 		.num = 2,
23 		.pin = 21,
24 		.reg = 0xe8,
25 		.bit = 4,
26 		.mask = 0x7
27 	}, {
28 		.num = 2,
29 		.pin = 22,
30 		.reg = 0xe8,
31 		.bit = 8,
32 		.mask = 0x7
33 	}, {
34 		.num = 2,
35 		.pin = 23,
36 		.reg = 0xe8,
37 		.bit = 12,
38 		.mask = 0x7
39 	}, {
40 		.num = 2,
41 		.pin = 24,
42 		.reg = 0xd4,
43 		.bit = 12,
44 		.mask = 0x7
45 	},
46 };
47 
48 static struct rockchip_mux_route_data rk3128_mux_route_data[] = {
49 	{
50 		/* spi-0 */
51 		.bank_num = 1,
52 		.pin = 10,
53 		.func = 1,
54 		.route_offset = 0x144,
55 		.route_val = BIT(16 + 3) | BIT(16 + 4),
56 	}, {
57 		/* spi-1 */
58 		.bank_num = 1,
59 		.pin = 27,
60 		.func = 3,
61 		.route_offset = 0x144,
62 		.route_val = BIT(16 + 3) | BIT(16 + 4) | BIT(3),
63 	}, {
64 		/* spi-2 */
65 		.bank_num = 0,
66 		.pin = 13,
67 		.func = 2,
68 		.route_offset = 0x144,
69 		.route_val = BIT(16 + 3) | BIT(16 + 4) | BIT(4),
70 	}, {
71 		/* i2s-0 */
72 		.bank_num = 1,
73 		.pin = 5,
74 		.func = 1,
75 		.route_offset = 0x144,
76 		.route_val = BIT(16 + 5),
77 	}, {
78 		/* i2s-1 */
79 		.bank_num = 0,
80 		.pin = 14,
81 		.func = 1,
82 		.route_offset = 0x144,
83 		.route_val = BIT(16 + 5) | BIT(5),
84 	}, {
85 		/* emmc-0 */
86 		.bank_num = 1,
87 		.pin = 22,
88 		.func = 2,
89 		.route_offset = 0x144,
90 		.route_val = BIT(16 + 6),
91 	}, {
92 		/* emmc-1 */
93 		.bank_num = 2,
94 		.pin = 4,
95 		.func = 2,
96 		.route_offset = 0x144,
97 		.route_val = BIT(16 + 6) | BIT(6),
98 	},
99 };
100 
101 #define RK3128_PULL_OFFSET		0x118
102 #define RK3128_PULL_PINS_PER_REG	16
103 #define RK3128_PULL_BANK_STRIDE		8
104 
105 static void rk3128_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
106 					 int pin_num, struct regmap **regmap,
107 					 int *reg, u8 *bit)
108 {
109 	struct rockchip_pinctrl_priv *priv = bank->priv;
110 
111 	*regmap = priv->regmap_base;
112 	*reg = RK3128_PULL_OFFSET;
113 	*reg += bank->bank_num * RK3128_PULL_BANK_STRIDE;
114 	*reg += ((pin_num / RK3128_PULL_PINS_PER_REG) * 4);
115 
116 	*bit = pin_num % RK3128_PULL_PINS_PER_REG;
117 }
118 
119 static struct rockchip_pin_bank rk3128_pin_banks[] = {
120 	PIN_BANK(0, 32, "gpio0"),
121 	PIN_BANK(1, 32, "gpio1"),
122 	PIN_BANK(2, 32, "gpio2"),
123 	PIN_BANK(3, 32, "gpio3"),
124 };
125 
126 static struct rockchip_pin_ctrl rk3128_pin_ctrl = {
127 	.pin_banks		= rk3128_pin_banks,
128 	.nr_banks		= ARRAY_SIZE(rk3128_pin_banks),
129 	.label			= "RK3128-GPIO",
130 	.type			= RK3128,
131 	.grf_mux_offset		= 0xa8,
132 	.iomux_recalced		= rk3128_mux_recalced_data,
133 	.niomux_recalced	= ARRAY_SIZE(rk3128_mux_recalced_data),
134 	.iomux_routes		= rk3128_mux_route_data,
135 	.niomux_routes		= ARRAY_SIZE(rk3128_mux_route_data),
136 	.pull_calc_reg		= rk3128_calc_pull_reg_and_bit,
137 };
138 
139 static const struct udevice_id rk3128_pinctrl_ids[] = {
140 	{ .compatible = "rockchip,rk3128-pinctrl",
141 		.data = (ulong)&rk3128_pin_ctrl },
142 	{ }
143 };
144 
145 U_BOOT_DRIVER(pinctrl_rk3128) = {
146 	.name		= "pinctrl_rk3128",
147 	.id		= UCLASS_PINCTRL,
148 	.of_match	= rk3128_pinctrl_ids,
149 	.priv_auto_alloc_size = sizeof(struct rockchip_pinctrl_priv),
150 	.ops		= &rockchip_pinctrl_ops,
151 #if !CONFIG_IS_ENABLED(OF_PLATDATA)
152 	.bind		= dm_scan_fdt_dev,
153 #endif
154 	.probe		= rockchip_pinctrl_probe,
155 };
156