1// SPDX-License-Identifier: GPL-2.0-only
2
3#include <asm/mach-ralink/ralink_regs.h>
4#include <asm/mach-ralink/rt305x.h>
5#include <linux/module.h>
6#include <linux/platform_device.h>
7#include <linux/of.h>
8#include "pinctrl-mtmips.h"
9
10#define RT305X_GPIO_MODE_UART0_SHIFT 2
11#define RT305X_GPIO_MODE_UART0_MASK 0x7
12#define RT305X_GPIO_MODE_UART0(x) ((x) << RT305X_GPIO_MODE_UART0_SHIFT)
13#define RT305X_GPIO_MODE_UARTF 0
14#define RT305X_GPIO_MODE_PCM_UARTF 1
15#define RT305X_GPIO_MODE_PCM_I2S 2
16#define RT305X_GPIO_MODE_I2S_UARTF 3
17#define RT305X_GPIO_MODE_PCM_GPIO 4
18#define RT305X_GPIO_MODE_GPIO_UARTF 5
19#define RT305X_GPIO_MODE_GPIO_I2S 6
20#define RT305X_GPIO_MODE_GPIO 7
21
22#define RT305X_GPIO_MODE_I2C 0
23#define RT305X_GPIO_MODE_SPI 1
24#define RT305X_GPIO_MODE_UART1 5
25#define RT305X_GPIO_MODE_JTAG 6
26#define RT305X_GPIO_MODE_MDIO 7
27#define RT305X_GPIO_MODE_SDRAM 8
28#define RT305X_GPIO_MODE_RGMII 9
29#define RT5350_GPIO_MODE_PHY_LED 14
30#define RT5350_GPIO_MODE_SPI_CS1 21
31#define RT3352_GPIO_MODE_LNA 18
32#define RT3352_GPIO_MODE_PA 20
33
34static struct mtmips_pmx_func i2c_grp[] = { FUNC("i2c", 0, 1, 2) };
35static struct mtmips_pmx_func spi_grp[] = { FUNC("spi", 0, 3, 4) };
36static struct mtmips_pmx_func uartf_grp[] = {
37 FUNC("uartf", RT305X_GPIO_MODE_UARTF, 7, 8),
38 FUNC("pcm uartf", RT305X_GPIO_MODE_PCM_UARTF, 7, 8),
39 FUNC("pcm i2s", RT305X_GPIO_MODE_PCM_I2S, 7, 8),
40 FUNC("i2s uartf", RT305X_GPIO_MODE_I2S_UARTF, 7, 8),
41 FUNC("pcm gpio", RT305X_GPIO_MODE_PCM_GPIO, 11, 4),
42 FUNC("gpio uartf", RT305X_GPIO_MODE_GPIO_UARTF, 7, 4),
43 FUNC("gpio i2s", RT305X_GPIO_MODE_GPIO_I2S, 7, 4),
44};
45static struct mtmips_pmx_func uartlite_grp[] = { FUNC("uartlite", 0, 15, 2) };
46static struct mtmips_pmx_func jtag_grp[] = { FUNC("jtag", 0, 17, 5) };
47static struct mtmips_pmx_func mdio_grp[] = { FUNC("mdio", 0, 22, 2) };
48static struct mtmips_pmx_func rt5350_led_grp[] = { FUNC("led", 0, 22, 5) };
49static struct mtmips_pmx_func rt5350_cs1_grp[] = {
50 FUNC("spi_cs1", 0, 27, 1),
51 FUNC("wdg_cs1", 1, 27, 1),
52};
53static struct mtmips_pmx_func sdram_grp[] = { FUNC("sdram", 0, 24, 16) };
54static struct mtmips_pmx_func rt3352_rgmii_grp[] = {
55 FUNC("rgmii", 0, 24, 12)
56};
57static struct mtmips_pmx_func rgmii_grp[] = { FUNC("rgmii", 0, 40, 12) };
58static struct mtmips_pmx_func rt3352_lna_grp[] = { FUNC("lna", 0, 36, 2) };
59static struct mtmips_pmx_func rt3352_pa_grp[] = { FUNC("pa", 0, 38, 2) };
60static struct mtmips_pmx_func rt3352_led_grp[] = { FUNC("led", 0, 40, 5) };
61static struct mtmips_pmx_func rt3352_cs1_grp[] = {
62 FUNC("spi_cs1", 0, 45, 1),
63 FUNC("wdg_cs1", 1, 45, 1),
64};
65
66static struct mtmips_pmx_group rt3050_pinmux_data[] = {
67 GRP("i2c", i2c_grp, 1, RT305X_GPIO_MODE_I2C),
68 GRP("spi", spi_grp, 1, RT305X_GPIO_MODE_SPI),
69 GRP("uartf", uartf_grp, RT305X_GPIO_MODE_UART0_MASK,
70 RT305X_GPIO_MODE_UART0_SHIFT),
71 GRP("uartlite", uartlite_grp, 1, RT305X_GPIO_MODE_UART1),
72 GRP("jtag", jtag_grp, 1, RT305X_GPIO_MODE_JTAG),
73 GRP("mdio", mdio_grp, 1, RT305X_GPIO_MODE_MDIO),
74 GRP("rgmii", rgmii_grp, 1, RT305X_GPIO_MODE_RGMII),
75 GRP("sdram", sdram_grp, 1, RT305X_GPIO_MODE_SDRAM),
76 { 0 }
77};
78
79static struct mtmips_pmx_group rt3352_pinmux_data[] = {
80 GRP("i2c", i2c_grp, 1, RT305X_GPIO_MODE_I2C),
81 GRP("spi", spi_grp, 1, RT305X_GPIO_MODE_SPI),
82 GRP("uartf", uartf_grp, RT305X_GPIO_MODE_UART0_MASK,
83 RT305X_GPIO_MODE_UART0_SHIFT),
84 GRP("uartlite", uartlite_grp, 1, RT305X_GPIO_MODE_UART1),
85 GRP("jtag", jtag_grp, 1, RT305X_GPIO_MODE_JTAG),
86 GRP("mdio", mdio_grp, 1, RT305X_GPIO_MODE_MDIO),
87 GRP("rgmii", rt3352_rgmii_grp, 1, RT305X_GPIO_MODE_RGMII),
88 GRP("lna", rt3352_lna_grp, 1, RT3352_GPIO_MODE_LNA),
89 GRP("pa", rt3352_pa_grp, 1, RT3352_GPIO_MODE_PA),
90 GRP("led", rt3352_led_grp, 1, RT5350_GPIO_MODE_PHY_LED),
91 GRP("spi_cs1", rt3352_cs1_grp, 2, RT5350_GPIO_MODE_SPI_CS1),
92 { 0 }
93};
94
95static struct mtmips_pmx_group rt5350_pinmux_data[] = {
96 GRP("i2c", i2c_grp, 1, RT305X_GPIO_MODE_I2C),
97 GRP("spi", spi_grp, 1, RT305X_GPIO_MODE_SPI),
98 GRP("uartf", uartf_grp, RT305X_GPIO_MODE_UART0_MASK,
99 RT305X_GPIO_MODE_UART0_SHIFT),
100 GRP("uartlite", uartlite_grp, 1, RT305X_GPIO_MODE_UART1),
101 GRP("jtag", jtag_grp, 1, RT305X_GPIO_MODE_JTAG),
102 GRP("led", rt5350_led_grp, 1, RT5350_GPIO_MODE_PHY_LED),
103 GRP("spi_cs1", rt5350_cs1_grp, 2, RT5350_GPIO_MODE_SPI_CS1),
104 { 0 }
105};
106
107static int rt305x_pinctrl_probe(struct platform_device *pdev)
108{
109 if (soc_is_rt5350())
110 return mtmips_pinctrl_init(pdev, data: rt5350_pinmux_data);
111 else if (soc_is_rt305x() || soc_is_rt3350())
112 return mtmips_pinctrl_init(pdev, data: rt3050_pinmux_data);
113 else if (soc_is_rt3352())
114 return mtmips_pinctrl_init(pdev, data: rt3352_pinmux_data);
115 else
116 return -EINVAL;
117}
118
119static const struct of_device_id rt305x_pinctrl_match[] = {
120 { .compatible = "ralink,rt305x-pinctrl" },
121 { .compatible = "ralink,rt3352-pinctrl" },
122 { .compatible = "ralink,rt5350-pinctrl" },
123 { .compatible = "ralink,rt2880-pinmux" },
124 {}
125};
126MODULE_DEVICE_TABLE(of, rt305x_pinctrl_match);
127
128static struct platform_driver rt305x_pinctrl_driver = {
129 .probe = rt305x_pinctrl_probe,
130 .driver = {
131 .name = "rt305x-pinctrl",
132 .of_match_table = rt305x_pinctrl_match,
133 },
134};
135
136static int __init rt305x_pinctrl_init(void)
137{
138 return platform_driver_register(&rt305x_pinctrl_driver);
139}
140core_initcall_sync(rt305x_pinctrl_init);
141

source code of linux/drivers/pinctrl/mediatek/pinctrl-rt305x.c