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, 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
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);