drivers/pinctrl/mscc/pinctrl-servalt.c

   1 // SPDX-License-Identifier: (GPL-2.0 OR MIT)
   2 /*
   3  * Microsemi SoCs pinctrl driver
   4  *
   5  * Author: <horatiu.vultur@microchip.com>
   6  * Copyright (c) 2019 Microsemi Corporation
   7  */
   8
   9 #include <common.h>
  10 #include <config.h>
  11 #include <dm.h>
  12 #include <dm/device-internal.h>
  13 #include <dm/lists.h>
  14 #include <dm/pinctrl.h>
  15 #include <dm/root.h>
  16 #include <errno.h>
  17 #include <fdtdec.h>
  18 #include <linux/io.h>
  19 #include <asm/gpio.h>
  20 #include <asm/system.h>
  21 #include "mscc-common.h"
  22
  23 enum {
  24         FUNC_NONE,
  25         FUNC_GPIO,
  26         FUNC_IRQ0_IN,
  27         FUNC_IRQ0_OUT,
  28         FUNC_IRQ1_IN,
  29         FUNC_IRQ1_OUT,
  30         FUNC_MIIM1,
  31         FUNC_MIIM2,
  32         FUNC_PCI_WAKE,
  33         FUNC_PTP0,
  34         FUNC_PTP1,
  35         FUNC_PTP2,
  36         FUNC_PTP3,
  37         FUNC_PWM,
  38         FUNC_RCVRD_CLK0,
  39         FUNC_RCVRD_CLK1,
  40         FUNC_RCVRD_CLK2,
  41         FUNC_RCVRD_CLK3,
  42         FUNC_REF_CLK0,
  43         FUNC_REF_CLK1,
  44         FUNC_REF_CLK2,
  45         FUNC_REF_CLK3,
  46         FUNC_SFP0,
  47         FUNC_SFP1,
  48         FUNC_SFP2,
  49         FUNC_SFP3,
  50         FUNC_SFP4,
  51         FUNC_SFP5,
  52         FUNC_SFP6,
  53         FUNC_SFP7,
  54         FUNC_SFP8,
  55         FUNC_SFP9,
  56         FUNC_SFP10,
  57         FUNC_SFP11,
  58         FUNC_SFP12,
  59         FUNC_SFP13,
  60         FUNC_SFP14,
  61         FUNC_SFP15,
  62         FUNC_SIO,
  63         FUNC_SPI,
  64         FUNC_TACHO,
  65         FUNC_TWI,
  66         FUNC_TWI2,
  67         FUNC_TWI_SCL_M,
  68         FUNC_UART,
  69         FUNC_UART2,
  70         FUNC_MAX
  71 };
  72
  73 static char * const servalt_function_names[] = {
  74         [FUNC_NONE]             = "none",
  75         [FUNC_GPIO]             = "gpio",
  76         [FUNC_IRQ0_IN]          = "irq0_in",
  77         [FUNC_IRQ0_OUT]         = "irq0_out",
  78         [FUNC_IRQ1_IN]          = "irq1_in",
  79         [FUNC_IRQ1_OUT]         = "irq1_out",
  80         [FUNC_MIIM1]            = "miim1",
  81         [FUNC_MIIM2]            = "miim2",
  82         [FUNC_PCI_WAKE]         = "pci_wake",
  83         [FUNC_PTP0]             = "ptp0",
  84         [FUNC_PTP1]             = "ptp1",
  85         [FUNC_PTP2]             = "ptp2",
  86         [FUNC_PTP3]             = "ptp3",
  87         [FUNC_PWM]              = "pwm",
  88         [FUNC_RCVRD_CLK0]       = "rcvrd_clk0",
  89         [FUNC_RCVRD_CLK1]       = "rcvrd_clk1",
  90         [FUNC_RCVRD_CLK2]       = "rcvrd_clk2",
  91         [FUNC_RCVRD_CLK3]       = "rcvrd_clk3",
  92         [FUNC_REF_CLK0]         = "ref_clk0",
  93         [FUNC_REF_CLK1]         = "ref_clk1",
  94         [FUNC_REF_CLK2]         = "ref_clk2",
  95         [FUNC_REF_CLK3]         = "ref_clk3",
  96         [FUNC_SFP0]             = "sfp0",
  97         [FUNC_SFP1]             = "sfp1",
  98         [FUNC_SFP2]             = "sfp2",
  99         [FUNC_SFP3]             = "sfp3",
 100         [FUNC_SFP4]             = "sfp4",
 101         [FUNC_SFP5]             = "sfp5",
 102         [FUNC_SFP6]             = "sfp6",
 103         [FUNC_SFP7]             = "sfp7",
 104         [FUNC_SFP8]             = "sfp8",
 105         [FUNC_SFP9]             = "sfp9",
 106         [FUNC_SFP10]            = "sfp10",
 107         [FUNC_SFP11]            = "sfp11",
 108         [FUNC_SFP12]            = "sfp12",
 109         [FUNC_SFP13]            = "sfp13",
 110         [FUNC_SFP14]            = "sfp14",
 111         [FUNC_SFP15]            = "sfp15",
 112         [FUNC_SIO]              = "sio",
 113         [FUNC_SPI]              = "spi",
 114         [FUNC_TACHO]            = "tacho",
 115         [FUNC_TWI]              = "twi",
 116         [FUNC_TWI2]             = "twi2",
 117         [FUNC_TWI_SCL_M]        = "twi_scl_m",
 118         [FUNC_UART]             = "uart",
 119         [FUNC_UART2]            = "uart2",
 120 };
 121
 122 MSCC_P(0,  SIO,        NONE,      NONE);
 123 MSCC_P(1,  SIO,        NONE,      NONE);
 124 MSCC_P(2,  SIO,        NONE,      NONE);
 125 MSCC_P(3,  SIO,        NONE,      NONE);
 126 MSCC_P(4,  IRQ0_IN,    IRQ0_OUT,  TWI_SCL_M);
 127 MSCC_P(5,  IRQ1_IN,    IRQ1_OUT,  TWI_SCL_M);
 128 MSCC_P(6,  UART,       NONE,      NONE);
 129 MSCC_P(7,  UART,       NONE,      NONE);
 130 MSCC_P(8,  SPI,        SFP0,      TWI_SCL_M);
 131 MSCC_P(9,  PCI_WAKE,   SFP1,      SPI);
 132 MSCC_P(10, PTP0,       SFP2,      TWI_SCL_M);
 133 MSCC_P(11, PTP1,       SFP3,      TWI_SCL_M);
 134 MSCC_P(12, REF_CLK0,   SFP4,      TWI_SCL_M);
 135 MSCC_P(13, REF_CLK1,   SFP5,      TWI_SCL_M);
 136 MSCC_P(14, REF_CLK2,   IRQ0_OUT,  SPI);
 137 MSCC_P(15, REF_CLK3,   IRQ1_OUT,  SPI);
 138 MSCC_P(16, TACHO,      SFP6,      SPI);
 139 MSCC_P(17, PWM,        NONE,      TWI_SCL_M);
 140 MSCC_P(18, PTP2,       SFP7,      SPI);
 141 MSCC_P(19, PTP3,       SFP8,      SPI);
 142 MSCC_P(20, UART2,      SFP9,      SPI);
 143 MSCC_P(21, UART2,      NONE,      NONE);
 144 MSCC_P(22, MIIM1,      SFP10,     TWI2);
 145 MSCC_P(23, MIIM1,      SFP11,     TWI2);
 146 MSCC_P(24, TWI,        NONE,      NONE);
 147 MSCC_P(25, TWI,        SFP12,     TWI_SCL_M);
 148 MSCC_P(26, TWI_SCL_M,  SFP13,     SPI);
 149 MSCC_P(27, TWI_SCL_M,  SFP14,     SPI);
 150 MSCC_P(28, TWI_SCL_M,  SFP15,     SPI);
 151 MSCC_P(29, TWI_SCL_M,  NONE,      NONE);
 152 MSCC_P(30, TWI_SCL_M,  NONE,      NONE);
 153 MSCC_P(31, TWI_SCL_M,  NONE,      NONE);
 154 MSCC_P(32, TWI_SCL_M,  NONE,      NONE);
 155 MSCC_P(33, RCVRD_CLK0, NONE,      NONE);
 156 MSCC_P(34, RCVRD_CLK1, NONE,      NONE);
 157 MSCC_P(35, RCVRD_CLK2, NONE,      NONE);
 158 MSCC_P(36, RCVRD_CLK3, NONE,      NONE);
 159
 160 #define SERVALT_PIN(n) {                                        \
 161         .name = "GPIO_"#n,                                      \
 162         .drv_data = &mscc_pin_##n                               \
 163 }
 164
 165 static const struct mscc_pin_data servalt_pins[] = {
 166         SERVALT_PIN(0),
 167         SERVALT_PIN(1),
 168         SERVALT_PIN(2),
 169         SERVALT_PIN(3),
 170         SERVALT_PIN(4),
 171         SERVALT_PIN(5),
 172         SERVALT_PIN(6),
 173         SERVALT_PIN(7),
 174         SERVALT_PIN(8),
 175         SERVALT_PIN(9),
 176         SERVALT_PIN(10),
 177         SERVALT_PIN(11),
 178         SERVALT_PIN(12),
 179         SERVALT_PIN(13),
 180         SERVALT_PIN(14),
 181         SERVALT_PIN(15),
 182         SERVALT_PIN(16),
 183         SERVALT_PIN(17),
 184         SERVALT_PIN(18),
 185         SERVALT_PIN(19),
 186         SERVALT_PIN(20),
 187         SERVALT_PIN(21),
 188         SERVALT_PIN(22),
 189         SERVALT_PIN(23),
 190         SERVALT_PIN(24),
 191         SERVALT_PIN(25),
 192         SERVALT_PIN(26),
 193         SERVALT_PIN(27),
 194         SERVALT_PIN(28),
 195         SERVALT_PIN(29),
 196         SERVALT_PIN(30),
 197         SERVALT_PIN(31),
 198         SERVALT_PIN(32),
 199         SERVALT_PIN(33),
 200         SERVALT_PIN(34),
 201         SERVALT_PIN(35),
 202         SERVALT_PIN(36),
 203 };
 204
 205 static const unsigned long servalt_gpios[] = {
 206         [MSCC_GPIO_OUT_SET] = 0x00,
 207         [MSCC_GPIO_OUT_CLR] = 0x08,
 208         [MSCC_GPIO_OUT] = 0x10,
 209         [MSCC_GPIO_IN] = 0x18,
 210         [MSCC_GPIO_OE] = 0x20,
 211         [MSCC_GPIO_INTR] = 0x28,
 212         [MSCC_GPIO_INTR_ENA] = 0x30,
 213         [MSCC_GPIO_INTR_IDENT] = 0x38,
 214         [MSCC_GPIO_ALT0] = 0x40,
 215         [MSCC_GPIO_ALT1] = 0x48,
 216 };
 217
 218 static int servalt_gpio_probe(struct udevice *dev)
 219 {
 220         struct gpio_dev_priv *uc_priv;
 221
 222         uc_priv = dev_get_uclass_priv(dev);
 223         uc_priv->bank_name = "servalt-gpio";
 224         uc_priv->gpio_count = ARRAY_SIZE(servalt_pins);
 225
 226         return 0;
 227 }
 228
 229 static struct driver servalt_gpio_driver = {
 230         .name   = "servalt-gpio",
 231         .id     = UCLASS_GPIO,
 232         .probe  = servalt_gpio_probe,
 233         .ops    = &mscc_gpio_ops,
 234 };
 235
 236 static int servalt_pinctrl_probe(struct udevice *dev)
 237 {
 238         int ret;
 239
 240         ret = mscc_pinctrl_probe(dev, FUNC_MAX, servalt_pins,
 241                                  ARRAY_SIZE(servalt_pins),
 242                                  servalt_function_names,
 243                                  servalt_gpios);
 244
 245         if (ret)
 246                 return ret;
 247
 248         ret = device_bind(dev, &servalt_gpio_driver, "servalt-gpio", NULL,
 249                           dev_of_offset(dev), NULL);
 250
 251         if (ret)
 252                 return ret;
 253
 254         return 0;
 255 }
 256
 257 static const struct udevice_id servalt_pinctrl_of_match[] = {
 258         { .compatible = "mscc,servalt-pinctrl" },
 259         {},
 260 };
 261
 262 U_BOOT_DRIVER(servalt_pinctrl) = {
 263         .name = "servalt-pinctrl",
 264         .id = UCLASS_PINCTRL,
 265         .of_match = of_match_ptr(servalt_pinctrl_of_match),
 266         .probe = servalt_pinctrl_probe,
 267         .priv_auto_alloc_size = sizeof(struct mscc_pinctrl),
 268         .ops = &mscc_pinctrl_ops,
 269 };