pinctrl/ralink/pinctrl-rt3883.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002
0003 #include <linux/module.h>
0004 #include <linux/platform_device.h>
0005 #include <linux/of.h>
0006 #include "pinctrl-ralink.h"
0007
0008 #define RT3883_GPIO_MODE_UART0_SHIFT    2
0009 #define RT3883_GPIO_MODE_UART0_MASK 0x7
0010 #define RT3883_GPIO_MODE_UART0(x)   ((x) << RT3883_GPIO_MODE_UART0_SHIFT)
0011 #define RT3883_GPIO_MODE_UARTF      0x0
0012 #define RT3883_GPIO_MODE_PCM_UARTF  0x1
0013 #define RT3883_GPIO_MODE_PCM_I2S    0x2
0014 #define RT3883_GPIO_MODE_I2S_UARTF  0x3
0015 #define RT3883_GPIO_MODE_PCM_GPIO   0x4
0016 #define RT3883_GPIO_MODE_GPIO_UARTF 0x5
0017 #define RT3883_GPIO_MODE_GPIO_I2S   0x6
0018 #define RT3883_GPIO_MODE_GPIO       0x7
0019
0020 #define RT3883_GPIO_MODE_I2C        0
0021 #define RT3883_GPIO_MODE_SPI        1
0022 #define RT3883_GPIO_MODE_UART1      5
0023 #define RT3883_GPIO_MODE_JTAG       6
0024 #define RT3883_GPIO_MODE_MDIO       7
0025 #define RT3883_GPIO_MODE_GE1        9
0026 #define RT3883_GPIO_MODE_GE2        10
0027
0028 #define RT3883_GPIO_MODE_PCI_SHIFT  11
0029 #define RT3883_GPIO_MODE_PCI_MASK   0x7
0030 #define RT3883_GPIO_MODE_PCI        (RT3883_GPIO_MODE_PCI_MASK << RT3883_GPIO_MODE_PCI_SHIFT)
0031 #define RT3883_GPIO_MODE_LNA_A_SHIFT    16
0032 #define RT3883_GPIO_MODE_LNA_A_MASK 0x3
0033 #define _RT3883_GPIO_MODE_LNA_A(_x) ((_x) << RT3883_GPIO_MODE_LNA_A_SHIFT)
0034 #define RT3883_GPIO_MODE_LNA_A_GPIO 0x3
0035 #define RT3883_GPIO_MODE_LNA_A      _RT3883_GPIO_MODE_LNA_A(RT3883_GPIO_MODE_LNA_A_MASK)
0036 #define RT3883_GPIO_MODE_LNA_G_SHIFT    18
0037 #define RT3883_GPIO_MODE_LNA_G_MASK 0x3
0038 #define _RT3883_GPIO_MODE_LNA_G(_x) ((_x) << RT3883_GPIO_MODE_LNA_G_SHIFT)
0039 #define RT3883_GPIO_MODE_LNA_G_GPIO 0x3
0040 #define RT3883_GPIO_MODE_LNA_G      _RT3883_GPIO_MODE_LNA_G(RT3883_GPIO_MODE_LNA_G_MASK)
0041
0042 static struct ralink_pmx_func i2c_func[] =  { FUNC("i2c", 0, 1, 2) };
0043 static struct ralink_pmx_func spi_func[] = { FUNC("spi", 0, 3, 4) };
0044 static struct ralink_pmx_func uartf_func[] = {
0045     FUNC("uartf", RT3883_GPIO_MODE_UARTF, 7, 8),
0046     FUNC("pcm uartf", RT3883_GPIO_MODE_PCM_UARTF, 7, 8),
0047     FUNC("pcm i2s", RT3883_GPIO_MODE_PCM_I2S, 7, 8),
0048     FUNC("i2s uartf", RT3883_GPIO_MODE_I2S_UARTF, 7, 8),
0049     FUNC("pcm gpio", RT3883_GPIO_MODE_PCM_GPIO, 11, 4),
0050     FUNC("gpio uartf", RT3883_GPIO_MODE_GPIO_UARTF, 7, 4),
0051     FUNC("gpio i2s", RT3883_GPIO_MODE_GPIO_I2S, 7, 4),
0052 };
0053 static struct ralink_pmx_func uartlite_func[] = { FUNC("uartlite", 0, 15, 2) };
0054 static struct ralink_pmx_func jtag_func[] = { FUNC("jtag", 0, 17, 5) };
0055 static struct ralink_pmx_func mdio_func[] = { FUNC("mdio", 0, 22, 2) };
0056 static struct ralink_pmx_func lna_a_func[] = { FUNC("lna a", 0, 32, 3) };
0057 static struct ralink_pmx_func lna_g_func[] = { FUNC("lna g", 0, 35, 3) };
0058 static struct ralink_pmx_func pci_func[] = {
0059     FUNC("pci-dev", 0, 40, 32),
0060     FUNC("pci-host2", 1, 40, 32),
0061     FUNC("pci-host1", 2, 40, 32),
0062     FUNC("pci-fnc", 3, 40, 32)
0063 };
0064 static struct ralink_pmx_func ge1_func[] = { FUNC("ge1", 0, 72, 12) };
0065 static struct ralink_pmx_func ge2_func[] = { FUNC("ge2", 0, 84, 12) };
0066
0067 static struct ralink_pmx_group rt3883_pinmux_data[] = {
0068     GRP("i2c", i2c_func, 1, RT3883_GPIO_MODE_I2C),
0069     GRP("spi", spi_func, 1, RT3883_GPIO_MODE_SPI),
0070     GRP("uartf", uartf_func, RT3883_GPIO_MODE_UART0_MASK,
0071         RT3883_GPIO_MODE_UART0_SHIFT),
0072     GRP("uartlite", uartlite_func, 1, RT3883_GPIO_MODE_UART1),
0073     GRP("jtag", jtag_func, 1, RT3883_GPIO_MODE_JTAG),
0074     GRP("mdio", mdio_func, 1, RT3883_GPIO_MODE_MDIO),
0075     GRP("lna a", lna_a_func, 1, RT3883_GPIO_MODE_LNA_A),
0076     GRP("lna g", lna_g_func, 1, RT3883_GPIO_MODE_LNA_G),
0077     GRP("pci", pci_func, RT3883_GPIO_MODE_PCI_MASK,
0078         RT3883_GPIO_MODE_PCI_SHIFT),
0079     GRP("ge1", ge1_func, 1, RT3883_GPIO_MODE_GE1),
0080     GRP("ge2", ge2_func, 1, RT3883_GPIO_MODE_GE2),
0081     { 0 }
0082 };
0083
0084 static int rt3883_pinctrl_probe(struct platform_device *pdev)
0085 {
0086     return ralink_pinctrl_init(pdev, rt3883_pinmux_data);
0087 }
0088
0089 static const struct of_device_id rt3883_pinctrl_match[] = {
0090     { .compatible = "ralink,rt3883-pinctrl" },
0091     {}
0092 };
0093 MODULE_DEVICE_TABLE(of, rt3883_pinctrl_match);
0094
0095 static struct platform_driver rt3883_pinctrl_driver = {
0096     .probe = rt3883_pinctrl_probe,
0097     .driver = {
0098         .name = "rt3883-pinctrl",
0099         .of_match_table = rt3883_pinctrl_match,
0100     },
0101 };
0102
0103 static int __init rt3883_pinctrl_init(void)
0104 {
0105     return platform_driver_register(&rt3883_pinctrl_driver);
0106 }
0107 core_initcall_sync(rt3883_pinctrl_init);