drivers/pinctrl/mscc/pinctrl-ocelot.c

   1 // SPDX-License-Identifier: (GPL-2.0 OR MIT)
   2 /*
   3  * Microsemi SoCs pinctrl driver
   4  *
   5  * Author: <alexandre.belloni@free-electrons.com>
   6  * Author: <gregory.clement@bootlin.com>
   7  * License: Dual MIT/GPL
   8  * Copyright (c) 2017 Microsemi Corporation
   9  */
  10
  11 #include <asm/gpio.h>
  12 #include <asm/system.h>
  13 #include <common.h>
  14 #include <config.h>
  15 #include <dm.h>
  16 #include <dm/device-internal.h>
  17 #include <dm/lists.h>
  18 #include <dm/pinctrl.h>
  19 #include <dm/root.h>
  20 #include <errno.h>
  21 #include <fdtdec.h>
  22 #include <linux/io.h>
  23 #include "mscc-common.h"
  24
  25 enum {
  26         FUNC_NONE,
  27         FUNC_GPIO,
  28         FUNC_IRQ0_IN,
  29         FUNC_IRQ0_OUT,
  30         FUNC_IRQ1_IN,
  31         FUNC_IRQ1_OUT,
  32         FUNC_MIIM1,
  33         FUNC_PCI_WAKE,
  34         FUNC_PTP0,
  35         FUNC_PTP1,
  36         FUNC_PTP2,
  37         FUNC_PTP3,
  38         FUNC_PWM,
  39         FUNC_RECO_CLK0,
  40         FUNC_RECO_CLK1,
  41         FUNC_SFP0,
  42         FUNC_SFP1,
  43         FUNC_SFP2,
  44         FUNC_SFP3,
  45         FUNC_SFP4,
  46         FUNC_SFP5,
  47         FUNC_SG0,
  48         FUNC_SI,
  49         FUNC_TACHO,
  50         FUNC_TWI,
  51         FUNC_TWI_SCL_M,
  52         FUNC_UART,
  53         FUNC_UART2,
  54         FUNC_MAX
  55 };
  56
  57 static char * const ocelot_function_names[] = {
  58         [FUNC_NONE]             = "none",
  59         [FUNC_GPIO]             = "gpio",
  60         [FUNC_IRQ0_IN]          = "irq0_in",
  61         [FUNC_IRQ0_OUT]         = "irq0_out",
  62         [FUNC_IRQ1_IN]          = "irq1_in",
  63         [FUNC_IRQ1_OUT]         = "irq1_out",
  64         [FUNC_MIIM1]            = "miim1",
  65         [FUNC_PCI_WAKE]         = "pci_wake",
  66         [FUNC_PTP0]             = "ptp0",
  67         [FUNC_PTP1]             = "ptp1",
  68         [FUNC_PTP2]             = "ptp2",
  69         [FUNC_PTP3]             = "ptp3",
  70         [FUNC_PWM]              = "pwm",
  71         [FUNC_RECO_CLK0]        = "reco_clk0",
  72         [FUNC_RECO_CLK1]        = "reco_clk1",
  73         [FUNC_SFP0]             = "sfp0",
  74         [FUNC_SFP1]             = "sfp1",
  75         [FUNC_SFP2]             = "sfp2",
  76         [FUNC_SFP3]             = "sfp3",
  77         [FUNC_SFP4]             = "sfp4",
  78         [FUNC_SFP5]             = "sfp5",
  79         [FUNC_SG0]              = "sg0",
  80         [FUNC_SI]               = "si",
  81         [FUNC_TACHO]            = "tacho",
  82         [FUNC_TWI]              = "twi",
  83         [FUNC_TWI_SCL_M]        = "twi_scl_m",
  84         [FUNC_UART]             = "uart",
  85         [FUNC_UART2]            = "uart2",
  86 };
  87
  88 MSCC_P(0,  SG0,       NONE,      NONE);
  89 MSCC_P(1,  SG0,       NONE,      NONE);
  90 MSCC_P(2,  SG0,       NONE,      NONE);
  91 MSCC_P(3,  SG0,       NONE,      NONE);
  92 MSCC_P(4,  IRQ0_IN,   IRQ0_OUT,  TWI);
  93 MSCC_P(5,  IRQ1_IN,   IRQ1_OUT,  PCI_WAKE);
  94 MSCC_P(6,  UART,      TWI_SCL_M, NONE);
  95 MSCC_P(7,  UART,      TWI_SCL_M, NONE);
  96 MSCC_P(8,  SI,        TWI_SCL_M, IRQ0_OUT);
  97 MSCC_P(9,  SI,        TWI_SCL_M, IRQ1_OUT);
  98 MSCC_P(10, PTP2,      TWI_SCL_M, SFP0);
  99 MSCC_P(11, PTP3,      TWI_SCL_M, SFP1);
 100 MSCC_P(12, UART2,     TWI_SCL_M, SFP2);
 101 MSCC_P(13, UART2,     TWI_SCL_M, SFP3);
 102 MSCC_P(14, MIIM1,     TWI_SCL_M, SFP4);
 103 MSCC_P(15, MIIM1,     TWI_SCL_M, SFP5);
 104 MSCC_P(16, TWI,       NONE,      SI);
 105 MSCC_P(17, TWI,       TWI_SCL_M, SI);
 106 MSCC_P(18, PTP0,      TWI_SCL_M, NONE);
 107 MSCC_P(19, PTP1,      TWI_SCL_M, NONE);
 108 MSCC_P(20, RECO_CLK0, TACHO,     NONE);
 109 MSCC_P(21, RECO_CLK1, PWM,       NONE);
 110
 111 #define OCELOT_PIN(n) {                                         \
 112         .name = "GPIO_"#n,                                      \
 113         .drv_data = &mscc_pin_##n                               \
 114 }
 115
 116 static const struct mscc_pin_data ocelot_pins[] = {
 117         OCELOT_PIN(0),
 118         OCELOT_PIN(1),
 119         OCELOT_PIN(2),
 120         OCELOT_PIN(3),
 121         OCELOT_PIN(4),
 122         OCELOT_PIN(5),
 123         OCELOT_PIN(6),
 124         OCELOT_PIN(7),
 125         OCELOT_PIN(8),
 126         OCELOT_PIN(9),
 127         OCELOT_PIN(10),
 128         OCELOT_PIN(11),
 129         OCELOT_PIN(12),
 130         OCELOT_PIN(13),
 131         OCELOT_PIN(14),
 132         OCELOT_PIN(15),
 133         OCELOT_PIN(16),
 134         OCELOT_PIN(17),
 135         OCELOT_PIN(18),
 136         OCELOT_PIN(19),
 137         OCELOT_PIN(20),
 138         OCELOT_PIN(21),
 139 };
 140
 141 static int ocelot_gpio_probe(struct udevice *dev)
 142 {
 143         struct gpio_dev_priv *uc_priv;
 144
 145         uc_priv = dev_get_uclass_priv(dev);
 146         uc_priv->bank_name = "ocelot-gpio";
 147         uc_priv->gpio_count = ARRAY_SIZE(ocelot_pins);
 148
 149         return 0;
 150 }
 151
 152 static struct driver ocelot_gpio_driver = {
 153         .name   = "ocelot-gpio",
 154         .id     = UCLASS_GPIO,
 155         .probe  = ocelot_gpio_probe,
 156         .ops    = &mscc_gpio_ops,
 157 };
 158
 159 int ocelot_pinctrl_probe(struct udevice *dev)
 160 {
 161         int ret;
 162
 163         ret = mscc_pinctrl_probe(dev, FUNC_MAX, ocelot_pins,
 164                                  ARRAY_SIZE(ocelot_pins),
 165                                  ocelot_function_names);
 166
 167         if (ret)
 168                 return ret;
 169
 170         ret = device_bind(dev, &ocelot_gpio_driver, "ocelot-gpio", NULL,
 171                           dev_of_offset(dev), NULL);
 172
 173         return ret;
 174 }
 175
 176 static const struct udevice_id ocelot_pinctrl_of_match[] = {
 177         {.compatible = "mscc,ocelot-pinctrl"},
 178         {},
 179 };
 180
 181 U_BOOT_DRIVER(ocelot_pinctrl) = {
 182         .name = "ocelot-pinctrl",
 183         .id = UCLASS_PINCTRL,
 184         .of_match = of_match_ptr(ocelot_pinctrl_of_match),
 185         .probe = ocelot_pinctrl_probe,
 186         .priv_auto_alloc_size = sizeof(struct mscc_pinctrl),
 187         .ops = &mscc_pinctrl_ops,
 188 };