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
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
// SPDX-License-Identifier: GPL-2.0+
/*
* Pinctrl driver for Rockchip 3128 SoCs
* (C) Copyright 2017 Rockchip Electronics Co., Ltd
*/
#include <common.h>
#include <dm.h>
#include <errno.h>
#include <syscon.h>
#include <asm/io.h>
#include <asm/arch/clock.h>
#include <asm/arch/grf_rk3128.h>
#include <asm/arch/hardware.h>
#include <asm/arch/periph.h>
#include <dm/pinctrl.h>
DECLARE_GLOBAL_DATA_PTR;
struct rk3128_pinctrl_priv {
struct rk3128_grf *grf;
};
static void pinctrl_rk3128_i2c_config(struct rk3128_grf *grf, int i2c_id)
{
switch (i2c_id) {
case PERIPH_ID_I2C0:
rk_clrsetreg(&grf->gpio0a_iomux,
GPIO0A1_MASK | GPIO0A0_MASK,
GPIO0A1_I2C0_SDA << GPIO0A1_SHIFT |
GPIO0A0_I2C0_SCL << GPIO0A0_SHIFT);
break;
case PERIPH_ID_I2C1:
rk_clrsetreg(&grf->gpio0a_iomux,
GPIO0A3_MASK | GPIO0A2_MASK,
GPIO0A3_I2C1_SDA << GPIO0A3_SHIFT |
GPIO0A2_I2C1_SCL << GPIO0A2_SHIFT);
break;
case PERIPH_ID_I2C2:
rk_clrsetreg(&grf->gpio2c_iomux2,
GPIO2C5_MASK | GPIO2C4_MASK,
GPIO2C5_I2C2_SCL << GPIO2C5_SHIFT |
GPIO2C4_I2C2_SDA << GPIO2C4_SHIFT);
break;
case PERIPH_ID_I2C3:
rk_clrsetreg(&grf->gpio0a_iomux,
GPIO0A7_MASK | GPIO0A6_MASK,
GPIO0A7_I2C3_SDA << GPIO0A7_SHIFT |
GPIO0A6_I2C3_SCL << GPIO0A6_SHIFT);
break;
}
}
static void pinctrl_rk3128_sdmmc_config(struct rk3128_grf *grf, int mmc_id)
{
switch (mmc_id) {
case PERIPH_ID_EMMC:
rk_clrsetreg(&grf->gpio1d_iomux, 0xffff,
GPIO1D7_EMMC_D7 << GPIO1D7_SHIFT |
GPIO1D6_EMMC_D6 << GPIO1D6_SHIFT |
GPIO1D5_EMMC_D5 << GPIO1D5_SHIFT |
GPIO1D4_EMMC_D4 << GPIO1D4_SHIFT |
GPIO1D3_EMMC_D3 << GPIO1D3_SHIFT |
GPIO1D2_EMMC_D2 << GPIO1D2_SHIFT |
GPIO1D1_EMMC_D1 << GPIO1D1_SHIFT |
GPIO1D0_EMMC_D0 << GPIO1D0_SHIFT);
rk_clrsetreg(&grf->gpio2a_iomux,
GPIO2A5_MASK | GPIO2A7_MASK,
GPIO2A5_EMMC_PWREN << GPIO2A5_SHIFT |
GPIO2A7_EMMC_CLKOUT << GPIO2A7_SHIFT);
break;
case PERIPH_ID_SDCARD:
rk_clrsetreg(&grf->gpio1c_iomux, 0x0fff,
GPIO1C5_MMC0_D3 << GPIO1C5_SHIFT |
GPIO1C4_MMC0_D2 << GPIO1C4_SHIFT |
GPIO1C3_MMC0_D1 << GPIO1C3_SHIFT |
GPIO1C2_MMC0_D0 << GPIO1C2_SHIFT |
GPIO1C1_MMC0_DETN << GPIO1C1_SHIFT |
GPIO1C0_MMC0_CLKOUT << GPIO1C0_SHIFT);
break;
}
}
static int rk3128_pinctrl_request(struct udevice *dev, int func, int flags)
{
struct rk3128_pinctrl_priv *priv = dev_get_priv(dev);
debug("%s: func=%x, flags=%x\n", __func__, func, flags);
switch (func) {
case PERIPH_ID_I2C0:
case PERIPH_ID_I2C1:
case PERIPH_ID_I2C2:
case PERIPH_ID_I2C3:
pinctrl_rk3128_i2c_config(priv->grf, func);
break;
case PERIPH_ID_SDMMC0:
case PERIPH_ID_SDMMC1:
pinctrl_rk3128_sdmmc_config(priv->grf, func);
break;
default:
return -EINVAL;
}
return 0;
}
static int rk3128_pinctrl_get_periph_id(struct udevice *dev,
struct udevice *periph)
{
u32 cell[3];
int ret;
ret = fdtdec_get_int_array(gd->fdt_blob, dev_of_offset(periph),
"interrupts", cell, ARRAY_SIZE(cell));
if (ret < 0)
return -EINVAL;
switch (cell[1]) {
case 14:
return PERIPH_ID_SDCARD;
case 16:
return PERIPH_ID_EMMC;
case 20:
return PERIPH_ID_UART0;
case 21:
return PERIPH_ID_UART1;
case 22:
return PERIPH_ID_UART2;
case 23:
return PERIPH_ID_SPI0;
case 24:
return PERIPH_ID_I2C0;
case 25:
return PERIPH_ID_I2C1;
case 26:
return PERIPH_ID_I2C2;
case 27:
return PERIPH_ID_I2C3;
case 30:
return PERIPH_ID_PWM0;
}
return -ENOENT;
}
static int rk3128_pinctrl_set_state_simple(struct udevice *dev,
struct udevice *periph)
{
int func;
func = rk3128_pinctrl_get_periph_id(dev, periph);
if (func < 0)
return func;
return rk3128_pinctrl_request(dev, func, 0);
}
static struct pinctrl_ops rk3128_pinctrl_ops = {
.set_state_simple = rk3128_pinctrl_set_state_simple,
.request = rk3128_pinctrl_request,
.get_periph_id = rk3128_pinctrl_get_periph_id,
};
static int rk3128_pinctrl_probe(struct udevice *dev)
{
struct rk3128_pinctrl_priv *priv = dev_get_priv(dev);
priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
debug("%s: grf=%p\n", __func__, priv->grf);
return 0;
}
static const struct udevice_id rk3128_pinctrl_ids[] = {
{ .compatible = "rockchip,rk3128-pinctrl" },
{ }
};
U_BOOT_DRIVER(pinctrl_rk3128) = {
.name = "pinctrl_rk3128",
.id = UCLASS_PINCTRL,
.of_match = rk3128_pinctrl_ids,
.priv_auto_alloc_size = sizeof(struct rk3128_pinctrl_priv),
.ops = &rk3128_pinctrl_ops,
.bind = dm_scan_fdt_dev,
.probe = rk3128_pinctrl_probe,
};
|
