pinctrl/ralink/pinctrl-rt305x.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002
0003 #include <asm/mach-ralink/ralink_regs.h>
0004 #include <asm/mach-ralink/rt305x.h>
0005 #include <linux/module.h>
0006 #include <linux/platform_device.h>
0007 #include <linux/of.h>
0008 #include "pinctrl-ralink.h"
0009
0010 #define RT305X_GPIO_MODE_UART0_SHIFT    2
0011 #define RT305X_GPIO_MODE_UART0_MASK 0x7
0012 #define RT305X_GPIO_MODE_UART0(x)   ((x) << RT305X_GPIO_MODE_UART0_SHIFT)
0013 #define RT305X_GPIO_MODE_UARTF      0
0014 #define RT305X_GPIO_MODE_PCM_UARTF  1
0015 #define RT305X_GPIO_MODE_PCM_I2S    2
0016 #define RT305X_GPIO_MODE_I2S_UARTF  3
0017 #define RT305X_GPIO_MODE_PCM_GPIO   4
0018 #define RT305X_GPIO_MODE_GPIO_UARTF 5
0019 #define RT305X_GPIO_MODE_GPIO_I2S   6
0020 #define RT305X_GPIO_MODE_GPIO       7
0021
0022 #define RT305X_GPIO_MODE_I2C        0
0023 #define RT305X_GPIO_MODE_SPI        1
0024 #define RT305X_GPIO_MODE_UART1      5
0025 #define RT305X_GPIO_MODE_JTAG       6
0026 #define RT305X_GPIO_MODE_MDIO       7
0027 #define RT305X_GPIO_MODE_SDRAM      8
0028 #define RT305X_GPIO_MODE_RGMII      9
0029 #define RT5350_GPIO_MODE_PHY_LED    14
0030 #define RT5350_GPIO_MODE_SPI_CS1    21
0031 #define RT3352_GPIO_MODE_LNA        18
0032 #define RT3352_GPIO_MODE_PA     20
0033
0034 static struct ralink_pmx_func i2c_func[] =  { FUNC("i2c", 0, 1, 2) };
0035 static struct ralink_pmx_func spi_func[] = { FUNC("spi", 0, 3, 4) };
0036 static struct ralink_pmx_func uartf_func[] = {
0037     FUNC("uartf", RT305X_GPIO_MODE_UARTF, 7, 8),
0038     FUNC("pcm uartf", RT305X_GPIO_MODE_PCM_UARTF, 7, 8),
0039     FUNC("pcm i2s", RT305X_GPIO_MODE_PCM_I2S, 7, 8),
0040     FUNC("i2s uartf", RT305X_GPIO_MODE_I2S_UARTF, 7, 8),
0041     FUNC("pcm gpio", RT305X_GPIO_MODE_PCM_GPIO, 11, 4),
0042     FUNC("gpio uartf", RT305X_GPIO_MODE_GPIO_UARTF, 7, 4),
0043     FUNC("gpio i2s", RT305X_GPIO_MODE_GPIO_I2S, 7, 4),
0044 };
0045 static struct ralink_pmx_func uartlite_func[] = { FUNC("uartlite", 0, 15, 2) };
0046 static struct ralink_pmx_func jtag_func[] = { FUNC("jtag", 0, 17, 5) };
0047 static struct ralink_pmx_func mdio_func[] = { FUNC("mdio", 0, 22, 2) };
0048 static struct ralink_pmx_func rt5350_led_func[] = { FUNC("led", 0, 22, 5) };
0049 static struct ralink_pmx_func rt5350_cs1_func[] = {
0050     FUNC("spi_cs1", 0, 27, 1),
0051     FUNC("wdg_cs1", 1, 27, 1),
0052 };
0053 static struct ralink_pmx_func sdram_func[] = { FUNC("sdram", 0, 24, 16) };
0054 static struct ralink_pmx_func rt3352_rgmii_func[] = {
0055     FUNC("rgmii", 0, 24, 12)
0056 };
0057 static struct ralink_pmx_func rgmii_func[] = { FUNC("rgmii", 0, 40, 12) };
0058 static struct ralink_pmx_func rt3352_lna_func[] = { FUNC("lna", 0, 36, 2) };
0059 static struct ralink_pmx_func rt3352_pa_func[] = { FUNC("pa", 0, 38, 2) };
0060 static struct ralink_pmx_func rt3352_led_func[] = { FUNC("led", 0, 40, 5) };
0061 static struct ralink_pmx_func rt3352_cs1_func[] = {
0062     FUNC("spi_cs1", 0, 45, 1),
0063     FUNC("wdg_cs1", 1, 45, 1),
0064 };
0065
0066 static struct ralink_pmx_group rt3050_pinmux_data[] = {
0067     GRP("i2c", i2c_func, 1, RT305X_GPIO_MODE_I2C),
0068     GRP("spi", spi_func, 1, RT305X_GPIO_MODE_SPI),
0069     GRP("uartf", uartf_func, RT305X_GPIO_MODE_UART0_MASK,
0070         RT305X_GPIO_MODE_UART0_SHIFT),
0071     GRP("uartlite", uartlite_func, 1, RT305X_GPIO_MODE_UART1),
0072     GRP("jtag", jtag_func, 1, RT305X_GPIO_MODE_JTAG),
0073     GRP("mdio", mdio_func, 1, RT305X_GPIO_MODE_MDIO),
0074     GRP("rgmii", rgmii_func, 1, RT305X_GPIO_MODE_RGMII),
0075     GRP("sdram", sdram_func, 1, RT305X_GPIO_MODE_SDRAM),
0076     { 0 }
0077 };
0078
0079 static struct ralink_pmx_group rt3352_pinmux_data[] = {
0080     GRP("i2c", i2c_func, 1, RT305X_GPIO_MODE_I2C),
0081     GRP("spi", spi_func, 1, RT305X_GPIO_MODE_SPI),
0082     GRP("uartf", uartf_func, RT305X_GPIO_MODE_UART0_MASK,
0083         RT305X_GPIO_MODE_UART0_SHIFT),
0084     GRP("uartlite", uartlite_func, 1, RT305X_GPIO_MODE_UART1),
0085     GRP("jtag", jtag_func, 1, RT305X_GPIO_MODE_JTAG),
0086     GRP("mdio", mdio_func, 1, RT305X_GPIO_MODE_MDIO),
0087     GRP("rgmii", rt3352_rgmii_func, 1, RT305X_GPIO_MODE_RGMII),
0088     GRP("lna", rt3352_lna_func, 1, RT3352_GPIO_MODE_LNA),
0089     GRP("pa", rt3352_pa_func, 1, RT3352_GPIO_MODE_PA),
0090     GRP("led", rt3352_led_func, 1, RT5350_GPIO_MODE_PHY_LED),
0091     GRP("spi_cs1", rt3352_cs1_func, 2, RT5350_GPIO_MODE_SPI_CS1),
0092     { 0 }
0093 };
0094
0095 static struct ralink_pmx_group rt5350_pinmux_data[] = {
0096     GRP("i2c", i2c_func, 1, RT305X_GPIO_MODE_I2C),
0097     GRP("spi", spi_func, 1, RT305X_GPIO_MODE_SPI),
0098     GRP("uartf", uartf_func, RT305X_GPIO_MODE_UART0_MASK,
0099         RT305X_GPIO_MODE_UART0_SHIFT),
0100     GRP("uartlite", uartlite_func, 1, RT305X_GPIO_MODE_UART1),
0101     GRP("jtag", jtag_func, 1, RT305X_GPIO_MODE_JTAG),
0102     GRP("led", rt5350_led_func, 1, RT5350_GPIO_MODE_PHY_LED),
0103     GRP("spi_cs1", rt5350_cs1_func, 2, RT5350_GPIO_MODE_SPI_CS1),
0104     { 0 }
0105 };
0106
0107 static int rt305x_pinctrl_probe(struct platform_device *pdev)
0108 {
0109     if (soc_is_rt5350())
0110         return ralink_pinctrl_init(pdev, rt5350_pinmux_data);
0111     else if (soc_is_rt305x() || soc_is_rt3350())
0112         return ralink_pinctrl_init(pdev, rt3050_pinmux_data);
0113     else if (soc_is_rt3352())
0114         return ralink_pinctrl_init(pdev, rt3352_pinmux_data);
0115     else
0116         return -EINVAL;
0117 }
0118
0119 static const struct of_device_id rt305x_pinctrl_match[] = {
0120     { .compatible = "ralink,rt305x-pinctrl" },
0121     {}
0122 };
0123 MODULE_DEVICE_TABLE(of, rt305x_pinctrl_match);
0124
0125 static struct platform_driver rt305x_pinctrl_driver = {
0126     .probe = rt305x_pinctrl_probe,
0127     .driver = {
0128         .name = "rt305x-pinctrl",
0129         .of_match_table = rt305x_pinctrl_match,
0130     },
0131 };
0132
0133 static int __init rt305x_pinctrl_init(void)
0134 {
0135     return platform_driver_register(&rt305x_pinctrl_driver);
0136 }
0137 core_initcall_sync(rt305x_pinctrl_init);