1 // SPDX-License-Identifier: GPL-2.0-only
2
3 #include <linux/bitops.h>
4 #include <linux/module.h>
5 #include <linux/platform_device.h>
6 #include <linux/of.h>
7 #include "pinmux.h"
8
9 #define RT2880_GPIO_MODE_I2C BIT(0)
10 #define RT2880_GPIO_MODE_UART0 BIT(1)
11 #define RT2880_GPIO_MODE_SPI BIT(2)
12 #define RT2880_GPIO_MODE_UART1 BIT(3)
13 #define RT2880_GPIO_MODE_JTAG BIT(4)
14 #define RT2880_GPIO_MODE_MDIO BIT(5)
15 #define RT2880_GPIO_MODE_SDRAM BIT(6)
16 #define RT2880_GPIO_MODE_PCI BIT(7)
17
18 static struct rt2880_pmx_func i2c_func[] = { FUNC("i2c", 0, 1, 2) };
19 static struct rt2880_pmx_func spi_func[] = { FUNC("spi", 0, 3, 4) };
20 static struct rt2880_pmx_func uartlite_func[] = { FUNC("uartlite", 0, 7, 8) };
21 static struct rt2880_pmx_func jtag_func[] = { FUNC("jtag", 0, 17, 5) };
22 static struct rt2880_pmx_func mdio_func[] = { FUNC("mdio", 0, 22, 2) };
23 static struct rt2880_pmx_func sdram_func[] = { FUNC("sdram", 0, 24, 16) };
24 static struct rt2880_pmx_func pci_func[] = { FUNC("pci", 0, 40, 32) };
25
26 static struct rt2880_pmx_group rt2880_pinmux_data_act[] = {
27 GRP("i2c", i2c_func, 1, RT2880_GPIO_MODE_I2C),
28 GRP("spi", spi_func, 1, RT2880_GPIO_MODE_SPI),
29 GRP("uartlite", uartlite_func, 1, RT2880_GPIO_MODE_UART0),
30 GRP("jtag", jtag_func, 1, RT2880_GPIO_MODE_JTAG),
31 GRP("mdio", mdio_func, 1, RT2880_GPIO_MODE_MDIO),
32 GRP("sdram", sdram_func, 1, RT2880_GPIO_MODE_SDRAM),
33 GRP("pci", pci_func, 1, RT2880_GPIO_MODE_PCI),
34 { 0 }
35 };
36
rt288x_pinmux_probe(struct platform_device * pdev)37 static int rt288x_pinmux_probe(struct platform_device *pdev)
38 {
39 return rt2880_pinmux_init(pdev, rt2880_pinmux_data_act);
40 }
41
42 static const struct of_device_id rt288x_pinmux_match[] = {
43 { .compatible = "ralink,rt2880-pinmux" },
44 {}
45 };
46 MODULE_DEVICE_TABLE(of, rt288x_pinmux_match);
47
48 static struct platform_driver rt288x_pinmux_driver = {
49 .probe = rt288x_pinmux_probe,
50 .driver = {
51 .name = "rt2880-pinmux",
52 .of_match_table = rt288x_pinmux_match,
53 },
54 };
55
rt288x_pinmux_init(void)56 static int __init rt288x_pinmux_init(void)
57 {
58 return platform_driver_register(&rt288x_pinmux_driver);
59 }
60 core_initcall_sync(rt288x_pinmux_init);
61