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 
34 static struct mtmips_pmx_func i2c_grp[] =  { FUNC("i2c", 0, 1, 2) };
35 static struct mtmips_pmx_func spi_grp[] = { FUNC("spi", 0, 3, 4) };
36 static 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 };
45 static struct mtmips_pmx_func uartlite_grp[] = { FUNC("uartlite", 0, 15, 2) };
46 static struct mtmips_pmx_func jtag_grp[] = { FUNC("jtag", 0, 17, 5) };
47 static struct mtmips_pmx_func mdio_grp[] = { FUNC("mdio", 0, 22, 2) };
48 static struct mtmips_pmx_func rt5350_led_grp[] = { FUNC("led", 0, 22, 5) };
49 static struct mtmips_pmx_func rt5350_cs1_grp[] = {
50 	FUNC("spi_cs1", 0, 27, 1),
51 	FUNC("wdg_cs1", 1, 27, 1),
52 };
53 static struct mtmips_pmx_func sdram_grp[] = { FUNC("sdram", 0, 24, 16) };
54 static struct mtmips_pmx_func rt3352_rgmii_grp[] = {
55 	FUNC("rgmii", 0, 24, 12)
56 };
57 static struct mtmips_pmx_func rgmii_grp[] = { FUNC("rgmii", 0, 40, 12) };
58 static struct mtmips_pmx_func rt3352_lna_grp[] = { FUNC("lna", 0, 36, 2) };
59 static struct mtmips_pmx_func rt3352_pa_grp[] = { FUNC("pa", 0, 38, 2) };
60 static struct mtmips_pmx_func rt3352_led_grp[] = { FUNC("led", 0, 40, 5) };
61 static struct mtmips_pmx_func rt3352_cs1_grp[] = {
62 	FUNC("spi_cs1", 0, 45, 1),
63 	FUNC("wdg_cs1", 1, 45, 1),
64 };
65 
66 static 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 
79 static 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 
95 static 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 
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 mtmips_pinctrl_init(pdev, rt5350_pinmux_data);
111 	else if (soc_is_rt305x() || soc_is_rt3350())
112 		return mtmips_pinctrl_init(pdev, rt3050_pinmux_data);
113 	else if (soc_is_rt3352())
114 		return mtmips_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 	{ .compatible = "ralink,rt3352-pinctrl" },
122 	{ .compatible = "ralink,rt5350-pinctrl" },
123 	{ .compatible = "ralink,rt2880-pinmux" },
124 	{}
125 };
126 MODULE_DEVICE_TABLE(of, rt305x_pinctrl_match);
127 
128 static 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 
rt305x_pinctrl_init(void)136 static int __init rt305x_pinctrl_init(void)
137 {
138 	return platform_driver_register(&rt305x_pinctrl_driver);
139 }
140 core_initcall_sync(rt305x_pinctrl_init);
141