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-ralink.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
34 static struct ralink_pmx_func i2c_grp[] = { FUNC("i2c", 0, 1, 2) };
35 static struct ralink_pmx_func spi_grp[] = { FUNC("spi", 0, 3, 4) };
36 static struct ralink_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 };
45 static struct ralink_pmx_func uartlite_grp[] = { FUNC("uartlite", 0, 15, 2) };
46 static struct ralink_pmx_func jtag_grp[] = { FUNC("jtag", 0, 17, 5) };
47 static struct ralink_pmx_func mdio_grp[] = { FUNC("mdio", 0, 22, 2) };
48 static struct ralink_pmx_func rt5350_led_grp[] = { FUNC("led", 0, 22, 5) };
49 static struct ralink_pmx_func rt5350_cs1_grp[] = {
50 FUNC("spi_cs1", 0, 27, 1),
51 FUNC("wdg_cs1", 1, 27, 1),
52 };
53 static struct ralink_pmx_func sdram_grp[] = { FUNC("sdram", 0, 24, 16) };
54 static struct ralink_pmx_func rt3352_rgmii_grp[] = {
55 FUNC("rgmii", 0, 24, 12)
56 };
57 static struct ralink_pmx_func rgmii_grp[] = { FUNC("rgmii", 0, 40, 12) };
58 static struct ralink_pmx_func rt3352_lna_grp[] = { FUNC("lna", 0, 36, 2) };
59 static struct ralink_pmx_func rt3352_pa_grp[] = { FUNC("pa", 0, 38, 2) };
60 static struct ralink_pmx_func rt3352_led_grp[] = { FUNC("led", 0, 40, 5) };
61 static struct ralink_pmx_func rt3352_cs1_grp[] = {
62 FUNC("spi_cs1", 0, 45, 1),
63 FUNC("wdg_cs1", 1, 45, 1),
64 };
65
66 static struct ralink_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
79 static struct ralink_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
95 static struct ralink_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
rt305x_pinctrl_probe(struct platform_device * pdev)107 static int rt305x_pinctrl_probe(struct platform_device *pdev)
108 {
109 if (soc_is_rt5350())
110 return ralink_pinctrl_init(pdev, rt5350_pinmux_data);
111 else if (soc_is_rt305x() || soc_is_rt3350())
112 return ralink_pinctrl_init(pdev, rt3050_pinmux_data);
113 else if (soc_is_rt3352())
114 return ralink_pinctrl_init(pdev, rt3352_pinmux_data);
115 else
116 return -EINVAL;
117 }
118
119 static const struct of_device_id rt305x_pinctrl_match[] = {
120 { .compatible = "ralink,rt305x-pinctrl" },
121 {}
122 };
123 MODULE_DEVICE_TABLE(of, rt305x_pinctrl_match);
124
125 static struct platform_driver rt305x_pinctrl_driver = {
126 .probe = rt305x_pinctrl_probe,
127 .driver = {
128 .name = "rt305x-pinctrl",
129 .of_match_table = rt305x_pinctrl_match,
130 },
131 };
132
rt305x_pinctrl_init(void)133 static int __init rt305x_pinctrl_init(void)
134 {
135 return platform_driver_register(&rt305x_pinctrl_driver);
136 }
137 core_initcall_sync(rt305x_pinctrl_init);
138