drivers/pinctrl/mediatek/pinctrl-rt3883.c

   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);