1 // SPDX-License-Identifier: GPL-2.0-only
2
3 #include <linux/module.h>
4 #include <linux/platform_device.h>
5 #include <linux/of.h>
6 #include "pinmux.h"
7
8 #define RT3883_GPIO_MODE_UART0_SHIFT 2
9 #define RT3883_GPIO_MODE_UART0_MASK 0x7
10 #define RT3883_GPIO_MODE_UART0(x) ((x) << RT3883_GPIO_MODE_UART0_SHIFT)
11 #define RT3883_GPIO_MODE_UARTF 0x0
12 #define RT3883_GPIO_MODE_PCM_UARTF 0x1
13 #define RT3883_GPIO_MODE_PCM_I2S 0x2
14 #define RT3883_GPIO_MODE_I2S_UARTF 0x3
15 #define RT3883_GPIO_MODE_PCM_GPIO 0x4
16 #define RT3883_GPIO_MODE_GPIO_UARTF 0x5
17 #define RT3883_GPIO_MODE_GPIO_I2S 0x6
18 #define RT3883_GPIO_MODE_GPIO 0x7
19
20 #define RT3883_GPIO_MODE_I2C 0
21 #define RT3883_GPIO_MODE_SPI 1
22 #define RT3883_GPIO_MODE_UART1 5
23 #define RT3883_GPIO_MODE_JTAG 6
24 #define RT3883_GPIO_MODE_MDIO 7
25 #define RT3883_GPIO_MODE_GE1 9
26 #define RT3883_GPIO_MODE_GE2 10
27
28 #define RT3883_GPIO_MODE_PCI_SHIFT 11
29 #define RT3883_GPIO_MODE_PCI_MASK 0x7
30 #define RT3883_GPIO_MODE_PCI (RT3883_GPIO_MODE_PCI_MASK << RT3883_GPIO_MODE_PCI_SHIFT)
31 #define RT3883_GPIO_MODE_LNA_A_SHIFT 16
32 #define RT3883_GPIO_MODE_LNA_A_MASK 0x3
33 #define _RT3883_GPIO_MODE_LNA_A(_x) ((_x) << RT3883_GPIO_MODE_LNA_A_SHIFT)
34 #define RT3883_GPIO_MODE_LNA_A_GPIO 0x3
35 #define RT3883_GPIO_MODE_LNA_A _RT3883_GPIO_MODE_LNA_A(RT3883_GPIO_MODE_LNA_A_MASK)
36 #define RT3883_GPIO_MODE_LNA_G_SHIFT 18
37 #define RT3883_GPIO_MODE_LNA_G_MASK 0x3
38 #define _RT3883_GPIO_MODE_LNA_G(_x) ((_x) << RT3883_GPIO_MODE_LNA_G_SHIFT)
39 #define RT3883_GPIO_MODE_LNA_G_GPIO 0x3
40 #define RT3883_GPIO_MODE_LNA_G _RT3883_GPIO_MODE_LNA_G(RT3883_GPIO_MODE_LNA_G_MASK)
41
42 static struct rt2880_pmx_func i2c_func[] = { FUNC("i2c", 0, 1, 2) };
43 static struct rt2880_pmx_func spi_func[] = { FUNC("spi", 0, 3, 4) };
44 static struct rt2880_pmx_func uartf_func[] = {
45 FUNC("uartf", RT3883_GPIO_MODE_UARTF, 7, 8),
46 FUNC("pcm uartf", RT3883_GPIO_MODE_PCM_UARTF, 7, 8),
47 FUNC("pcm i2s", RT3883_GPIO_MODE_PCM_I2S, 7, 8),
48 FUNC("i2s uartf", RT3883_GPIO_MODE_I2S_UARTF, 7, 8),
49 FUNC("pcm gpio", RT3883_GPIO_MODE_PCM_GPIO, 11, 4),
50 FUNC("gpio uartf", RT3883_GPIO_MODE_GPIO_UARTF, 7, 4),
51 FUNC("gpio i2s", RT3883_GPIO_MODE_GPIO_I2S, 7, 4),
52 };
53 static struct rt2880_pmx_func uartlite_func[] = { FUNC("uartlite", 0, 15, 2) };
54 static struct rt2880_pmx_func jtag_func[] = { FUNC("jtag", 0, 17, 5) };
55 static struct rt2880_pmx_func mdio_func[] = { FUNC("mdio", 0, 22, 2) };
56 static struct rt2880_pmx_func lna_a_func[] = { FUNC("lna a", 0, 32, 3) };
57 static struct rt2880_pmx_func lna_g_func[] = { FUNC("lna g", 0, 35, 3) };
58 static struct rt2880_pmx_func pci_func[] = {
59 FUNC("pci-dev", 0, 40, 32),
60 FUNC("pci-host2", 1, 40, 32),
61 FUNC("pci-host1", 2, 40, 32),
62 FUNC("pci-fnc", 3, 40, 32)
63 };
64 static struct rt2880_pmx_func ge1_func[] = { FUNC("ge1", 0, 72, 12) };
65 static struct rt2880_pmx_func ge2_func[] = { FUNC("ge2", 0, 84, 12) };
66
67 static struct rt2880_pmx_group rt3883_pinmux_data[] = {
68 GRP("i2c", i2c_func, 1, RT3883_GPIO_MODE_I2C),
69 GRP("spi", spi_func, 1, RT3883_GPIO_MODE_SPI),
70 GRP("uartf", uartf_func, RT3883_GPIO_MODE_UART0_MASK,
71 RT3883_GPIO_MODE_UART0_SHIFT),
72 GRP("uartlite", uartlite_func, 1, RT3883_GPIO_MODE_UART1),
73 GRP("jtag", jtag_func, 1, RT3883_GPIO_MODE_JTAG),
74 GRP("mdio", mdio_func, 1, RT3883_GPIO_MODE_MDIO),
75 GRP("lna a", lna_a_func, 1, RT3883_GPIO_MODE_LNA_A),
76 GRP("lna g", lna_g_func, 1, RT3883_GPIO_MODE_LNA_G),
77 GRP("pci", pci_func, RT3883_GPIO_MODE_PCI_MASK,
78 RT3883_GPIO_MODE_PCI_SHIFT),
79 GRP("ge1", ge1_func, 1, RT3883_GPIO_MODE_GE1),
80 GRP("ge2", ge2_func, 1, RT3883_GPIO_MODE_GE2),
81 { 0 }
82 };
83
rt3883_pinmux_probe(struct platform_device * pdev)84 static int rt3883_pinmux_probe(struct platform_device *pdev)
85 {
86 return rt2880_pinmux_init(pdev, rt3883_pinmux_data);
87 }
88
89 static const struct of_device_id rt3883_pinmux_match[] = {
90 { .compatible = "ralink,rt2880-pinmux" },
91 {}
92 };
93 MODULE_DEVICE_TABLE(of, rt3883_pinmux_match);
94
95 static struct platform_driver rt3883_pinmux_driver = {
96 .probe = rt3883_pinmux_probe,
97 .driver = {
98 .name = "rt2880-pinmux",
99 .of_match_table = rt3883_pinmux_match,
100 },
101 };
102
rt3883_pinmux_init(void)103 static int __init rt3883_pinmux_init(void)
104 {
105 return platform_driver_register(&rt3883_pinmux_driver);
106 }
107 core_initcall_sync(rt3883_pinmux_init);
108