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 "pinctrl-mtmips.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 mtmips_pmx_func i2c_grp[] = { FUNC("i2c", 0, 1, 2) }; 43 static struct mtmips_pmx_func spi_grp[] = { FUNC("spi", 0, 3, 4) }; 44 static struct mtmips_pmx_func uartf_grp[] = { 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 mtmips_pmx_func uartlite_grp[] = { FUNC("uartlite", 0, 15, 2) }; 54 static struct mtmips_pmx_func jtag_grp[] = { FUNC("jtag", 0, 17, 5) }; 55 static struct mtmips_pmx_func mdio_grp[] = { FUNC("mdio", 0, 22, 2) }; 56 static struct mtmips_pmx_func lna_a_grp[] = { FUNC("lna a", 0, 32, 3) }; 57 static struct mtmips_pmx_func lna_g_grp[] = { FUNC("lna g", 0, 35, 3) }; 58 static struct mtmips_pmx_func pci_grp[] = { 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 mtmips_pmx_func ge1_grp[] = { FUNC("ge1", 0, 72, 12) }; 65 static struct mtmips_pmx_func ge2_grp[] = { FUNC("ge2", 0, 84, 12) }; 66 67 static struct mtmips_pmx_group rt3883_pinmux_data[] = { 68 GRP("i2c", i2c_grp, 1, RT3883_GPIO_MODE_I2C), 69 GRP("spi", spi_grp, 1, RT3883_GPIO_MODE_SPI), 70 GRP("uartf", uartf_grp, RT3883_GPIO_MODE_UART0_MASK, 71 RT3883_GPIO_MODE_UART0_SHIFT), 72 GRP("uartlite", uartlite_grp, 1, RT3883_GPIO_MODE_UART1), 73 GRP("jtag", jtag_grp, 1, RT3883_GPIO_MODE_JTAG), 74 GRP("mdio", mdio_grp, 1, RT3883_GPIO_MODE_MDIO), 75 GRP("lna a", lna_a_grp, 1, RT3883_GPIO_MODE_LNA_A), 76 GRP("lna g", lna_g_grp, 1, RT3883_GPIO_MODE_LNA_G), 77 GRP("pci", pci_grp, RT3883_GPIO_MODE_PCI_MASK, 78 RT3883_GPIO_MODE_PCI_SHIFT), 79 GRP("ge1", ge1_grp, 1, RT3883_GPIO_MODE_GE1), 80 GRP("ge2", ge2_grp, 1, RT3883_GPIO_MODE_GE2), 81 { 0 } 82 }; 83 84 static int rt3883_pinctrl_probe(struct platform_device *pdev) 85 { 86 return mtmips_pinctrl_init(pdev, rt3883_pinmux_data); 87 } 88 89 static const struct of_device_id rt3883_pinctrl_match[] = { 90 { .compatible = "ralink,rt3883-pinctrl" }, 91 { .compatible = "ralink,rt2880-pinmux" }, 92 {} 93 }; 94 MODULE_DEVICE_TABLE(of, rt3883_pinctrl_match); 95 96 static struct platform_driver rt3883_pinctrl_driver = { 97 .probe = rt3883_pinctrl_probe, 98 .driver = { 99 .name = "rt3883-pinctrl", 100 .of_match_table = rt3883_pinctrl_match, 101 }, 102 }; 103 104 static int __init rt3883_pinctrl_init(void) 105 { 106 return platform_driver_register(&rt3883_pinctrl_driver); 107 } 108 core_initcall_sync(rt3883_pinctrl_init); 109