drivers/pinctrl/freescale/pinctrl-vf610.c

   1 /*
   2  * VF610 pinctrl driver based on imx pinmux and pinconf core
   3  *
   4  * Copyright 2013 Freescale Semiconductor, Inc.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  */
  11
  12 #include <linux/err.h>
  13 #include <linux/init.h>
  14 #include <linux/io.h>
  15 #include <linux/of.h>
  16 #include <linux/of_device.h>
  17 #include <linux/pinctrl/pinctrl.h>
  18
  19 #include "pinctrl-imx.h"
  20
  21 enum vf610_pads {
  22         VF610_PAD_PTA6 = 0,
  23         VF610_PAD_PTA8 = 1,
  24         VF610_PAD_PTA9 = 2,
  25         VF610_PAD_PTA10 = 3,
  26         VF610_PAD_PTA11 = 4,
  27         VF610_PAD_PTA12 = 5,
  28         VF610_PAD_PTA16 = 6,
  29         VF610_PAD_PTA17 = 7,
  30         VF610_PAD_PTA18 = 8,
  31         VF610_PAD_PTA19 = 9,
  32         VF610_PAD_PTA20 = 10,
  33         VF610_PAD_PTA21 = 11,
  34         VF610_PAD_PTA22 = 12,
  35         VF610_PAD_PTA23 = 13,
  36         VF610_PAD_PTA24 = 14,
  37         VF610_PAD_PTA25 = 15,
  38         VF610_PAD_PTA26 = 16,
  39         VF610_PAD_PTA27 = 17,
  40         VF610_PAD_PTA28 = 18,
  41         VF610_PAD_PTA29 = 19,
  42         VF610_PAD_PTA30 = 20,
  43         VF610_PAD_PTA31 = 21,
  44         VF610_PAD_PTB0 = 22,
  45         VF610_PAD_PTB1 = 23,
  46         VF610_PAD_PTB2 = 24,
  47         VF610_PAD_PTB3 = 25,
  48         VF610_PAD_PTB4 = 26,
  49         VF610_PAD_PTB5 = 27,
  50         VF610_PAD_PTB6 = 28,
  51         VF610_PAD_PTB7 = 29,
  52         VF610_PAD_PTB8 = 30,
  53         VF610_PAD_PTB9 = 31,
  54         VF610_PAD_PTB10 = 32,
  55         VF610_PAD_PTB11 = 33,
  56         VF610_PAD_PTB12 = 34,
  57         VF610_PAD_PTB13 = 35,
  58         VF610_PAD_PTB14 = 36,
  59         VF610_PAD_PTB15 = 37,
  60         VF610_PAD_PTB16 = 38,
  61         VF610_PAD_PTB17 = 39,
  62         VF610_PAD_PTB18 = 40,
  63         VF610_PAD_PTB19 = 41,
  64         VF610_PAD_PTB20 = 42,
  65         VF610_PAD_PTB21 = 43,
  66         VF610_PAD_PTB22 = 44,
  67         VF610_PAD_PTC0 = 45,
  68         VF610_PAD_PTC1 = 46,
  69         VF610_PAD_PTC2 = 47,
  70         VF610_PAD_PTC3 = 48,
  71         VF610_PAD_PTC4 = 49,
  72         VF610_PAD_PTC5 = 50,
  73         VF610_PAD_PTC6 = 51,
  74         VF610_PAD_PTC7 = 52,
  75         VF610_PAD_PTC8 = 53,
  76         VF610_PAD_PTC9 = 54,
  77         VF610_PAD_PTC10 = 55,
  78         VF610_PAD_PTC11 = 56,
  79         VF610_PAD_PTC12 = 57,
  80         VF610_PAD_PTC13 = 58,
  81         VF610_PAD_PTC14 = 59,
  82         VF610_PAD_PTC15 = 60,
  83         VF610_PAD_PTC16 = 61,
  84         VF610_PAD_PTC17 = 62,
  85         VF610_PAD_PTD31 = 63,
  86         VF610_PAD_PTD30 = 64,
  87         VF610_PAD_PTD29 = 65,
  88         VF610_PAD_PTD28 = 66,
  89         VF610_PAD_PTD27 = 67,
  90         VF610_PAD_PTD26 = 68,
  91         VF610_PAD_PTD25 = 69,
  92         VF610_PAD_PTD24 = 70,
  93         VF610_PAD_PTD23 = 71,
  94         VF610_PAD_PTD22 = 72,
  95         VF610_PAD_PTD21 = 73,
  96         VF610_PAD_PTD20 = 74,
  97         VF610_PAD_PTD19 = 75,
  98         VF610_PAD_PTD18 = 76,
  99         VF610_PAD_PTD17 = 77,
 100         VF610_PAD_PTD16 = 78,
 101         VF610_PAD_PTD0 = 79,
 102         VF610_PAD_PTD1 = 80,
 103         VF610_PAD_PTD2 = 81,
 104         VF610_PAD_PTD3 = 82,
 105         VF610_PAD_PTD4 = 83,
 106         VF610_PAD_PTD5 = 84,
 107         VF610_PAD_PTD6 = 85,
 108         VF610_PAD_PTD7 = 86,
 109         VF610_PAD_PTD8 = 87,
 110         VF610_PAD_PTD9 = 88,
 111         VF610_PAD_PTD10 = 89,
 112         VF610_PAD_PTD11 = 90,
 113         VF610_PAD_PTD12 = 91,
 114         VF610_PAD_PTD13 = 92,
 115         VF610_PAD_PTB23 = 93,
 116         VF610_PAD_PTB24 = 94,
 117         VF610_PAD_PTB25 = 95,
 118         VF610_PAD_PTB26 = 96,
 119         VF610_PAD_PTB27 = 97,
 120         VF610_PAD_PTB28 = 98,
 121         VF610_PAD_PTC26 = 99,
 122         VF610_PAD_PTC27 = 100,
 123         VF610_PAD_PTC28 = 101,
 124         VF610_PAD_PTC29 = 102,
 125         VF610_PAD_PTC30 = 103,
 126         VF610_PAD_PTC31 = 104,
 127         VF610_PAD_PTE0 = 105,
 128         VF610_PAD_PTE1 = 106,
 129         VF610_PAD_PTE2 = 107,
 130         VF610_PAD_PTE3 = 108,
 131         VF610_PAD_PTE4 = 109,
 132         VF610_PAD_PTE5 = 110,
 133         VF610_PAD_PTE6 = 111,
 134         VF610_PAD_PTE7 = 112,
 135         VF610_PAD_PTE8 = 113,
 136         VF610_PAD_PTE9 = 114,
 137         VF610_PAD_PTE10 = 115,
 138         VF610_PAD_PTE11 = 116,
 139         VF610_PAD_PTE12 = 117,
 140         VF610_PAD_PTE13 = 118,
 141         VF610_PAD_PTE14 = 119,
 142         VF610_PAD_PTE15 = 120,
 143         VF610_PAD_PTE16 = 121,
 144         VF610_PAD_PTE17 = 122,
 145         VF610_PAD_PTE18 = 123,
 146         VF610_PAD_PTE19 = 124,
 147         VF610_PAD_PTE20 = 125,
 148         VF610_PAD_PTE21 = 126,
 149         VF610_PAD_PTE22 = 127,
 150         VF610_PAD_PTE23 = 128,
 151         VF610_PAD_PTE24 = 129,
 152         VF610_PAD_PTE25 = 130,
 153         VF610_PAD_PTE26 = 131,
 154         VF610_PAD_PTE27 = 132,
 155         VF610_PAD_PTE28 = 133,
 156         VF610_PAD_PTA7 = 134,
 157 };
 158
 159 /* Pad names for the pinmux subsystem */
 160 static const struct pinctrl_pin_desc vf610_pinctrl_pads[] = {
 161         IMX_PINCTRL_PIN(VF610_PAD_PTA6),
 162         IMX_PINCTRL_PIN(VF610_PAD_PTA8),
 163         IMX_PINCTRL_PIN(VF610_PAD_PTA9),
 164         IMX_PINCTRL_PIN(VF610_PAD_PTA10),
 165         IMX_PINCTRL_PIN(VF610_PAD_PTA11),
 166         IMX_PINCTRL_PIN(VF610_PAD_PTA12),
 167         IMX_PINCTRL_PIN(VF610_PAD_PTA16),
 168         IMX_PINCTRL_PIN(VF610_PAD_PTA17),
 169         IMX_PINCTRL_PIN(VF610_PAD_PTA18),
 170         IMX_PINCTRL_PIN(VF610_PAD_PTA19),
 171         IMX_PINCTRL_PIN(VF610_PAD_PTA20),
 172         IMX_PINCTRL_PIN(VF610_PAD_PTA21),
 173         IMX_PINCTRL_PIN(VF610_PAD_PTA22),
 174         IMX_PINCTRL_PIN(VF610_PAD_PTA23),
 175         IMX_PINCTRL_PIN(VF610_PAD_PTA24),
 176         IMX_PINCTRL_PIN(VF610_PAD_PTA25),
 177         IMX_PINCTRL_PIN(VF610_PAD_PTA26),
 178         IMX_PINCTRL_PIN(VF610_PAD_PTA27),
 179         IMX_PINCTRL_PIN(VF610_PAD_PTA28),
 180         IMX_PINCTRL_PIN(VF610_PAD_PTA29),
 181         IMX_PINCTRL_PIN(VF610_PAD_PTA30),
 182         IMX_PINCTRL_PIN(VF610_PAD_PTA31),
 183         IMX_PINCTRL_PIN(VF610_PAD_PTB0),
 184         IMX_PINCTRL_PIN(VF610_PAD_PTB1),
 185         IMX_PINCTRL_PIN(VF610_PAD_PTB2),
 186         IMX_PINCTRL_PIN(VF610_PAD_PTB3),
 187         IMX_PINCTRL_PIN(VF610_PAD_PTB4),
 188         IMX_PINCTRL_PIN(VF610_PAD_PTB5),
 189         IMX_PINCTRL_PIN(VF610_PAD_PTB6),
 190         IMX_PINCTRL_PIN(VF610_PAD_PTB7),
 191         IMX_PINCTRL_PIN(VF610_PAD_PTB8),
 192         IMX_PINCTRL_PIN(VF610_PAD_PTB9),
 193         IMX_PINCTRL_PIN(VF610_PAD_PTB10),
 194         IMX_PINCTRL_PIN(VF610_PAD_PTB11),
 195         IMX_PINCTRL_PIN(VF610_PAD_PTB12),
 196         IMX_PINCTRL_PIN(VF610_PAD_PTB13),
 197         IMX_PINCTRL_PIN(VF610_PAD_PTB14),
 198         IMX_PINCTRL_PIN(VF610_PAD_PTB15),
 199         IMX_PINCTRL_PIN(VF610_PAD_PTB16),
 200         IMX_PINCTRL_PIN(VF610_PAD_PTB17),
 201         IMX_PINCTRL_PIN(VF610_PAD_PTB18),
 202         IMX_PINCTRL_PIN(VF610_PAD_PTB19),
 203         IMX_PINCTRL_PIN(VF610_PAD_PTB20),
 204         IMX_PINCTRL_PIN(VF610_PAD_PTB21),
 205         IMX_PINCTRL_PIN(VF610_PAD_PTB22),
 206         IMX_PINCTRL_PIN(VF610_PAD_PTC0),
 207         IMX_PINCTRL_PIN(VF610_PAD_PTC1),
 208         IMX_PINCTRL_PIN(VF610_PAD_PTC2),
 209         IMX_PINCTRL_PIN(VF610_PAD_PTC3),
 210         IMX_PINCTRL_PIN(VF610_PAD_PTC4),
 211         IMX_PINCTRL_PIN(VF610_PAD_PTC5),
 212         IMX_PINCTRL_PIN(VF610_PAD_PTC6),
 213         IMX_PINCTRL_PIN(VF610_PAD_PTC7),
 214         IMX_PINCTRL_PIN(VF610_PAD_PTC8),
 215         IMX_PINCTRL_PIN(VF610_PAD_PTC9),
 216         IMX_PINCTRL_PIN(VF610_PAD_PTC10),
 217         IMX_PINCTRL_PIN(VF610_PAD_PTC11),
 218         IMX_PINCTRL_PIN(VF610_PAD_PTC12),
 219         IMX_PINCTRL_PIN(VF610_PAD_PTC13),
 220         IMX_PINCTRL_PIN(VF610_PAD_PTC14),
 221         IMX_PINCTRL_PIN(VF610_PAD_PTC15),
 222         IMX_PINCTRL_PIN(VF610_PAD_PTC16),
 223         IMX_PINCTRL_PIN(VF610_PAD_PTC17),
 224         IMX_PINCTRL_PIN(VF610_PAD_PTD31),
 225         IMX_PINCTRL_PIN(VF610_PAD_PTD30),
 226         IMX_PINCTRL_PIN(VF610_PAD_PTD29),
 227         IMX_PINCTRL_PIN(VF610_PAD_PTD28),
 228         IMX_PINCTRL_PIN(VF610_PAD_PTD27),
 229         IMX_PINCTRL_PIN(VF610_PAD_PTD26),
 230         IMX_PINCTRL_PIN(VF610_PAD_PTD25),
 231         IMX_PINCTRL_PIN(VF610_PAD_PTD24),
 232         IMX_PINCTRL_PIN(VF610_PAD_PTD23),
 233         IMX_PINCTRL_PIN(VF610_PAD_PTD22),
 234         IMX_PINCTRL_PIN(VF610_PAD_PTD21),
 235         IMX_PINCTRL_PIN(VF610_PAD_PTD20),
 236         IMX_PINCTRL_PIN(VF610_PAD_PTD19),
 237         IMX_PINCTRL_PIN(VF610_PAD_PTD18),
 238         IMX_PINCTRL_PIN(VF610_PAD_PTD17),
 239         IMX_PINCTRL_PIN(VF610_PAD_PTD16),
 240         IMX_PINCTRL_PIN(VF610_PAD_PTD0),
 241         IMX_PINCTRL_PIN(VF610_PAD_PTD1),
 242         IMX_PINCTRL_PIN(VF610_PAD_PTD2),
 243         IMX_PINCTRL_PIN(VF610_PAD_PTD3),
 244         IMX_PINCTRL_PIN(VF610_PAD_PTD4),
 245         IMX_PINCTRL_PIN(VF610_PAD_PTD5),
 246         IMX_PINCTRL_PIN(VF610_PAD_PTD6),
 247         IMX_PINCTRL_PIN(VF610_PAD_PTD7),
 248         IMX_PINCTRL_PIN(VF610_PAD_PTD8),
 249         IMX_PINCTRL_PIN(VF610_PAD_PTD9),
 250         IMX_PINCTRL_PIN(VF610_PAD_PTD10),
 251         IMX_PINCTRL_PIN(VF610_PAD_PTD11),
 252         IMX_PINCTRL_PIN(VF610_PAD_PTD12),
 253         IMX_PINCTRL_PIN(VF610_PAD_PTD13),
 254         IMX_PINCTRL_PIN(VF610_PAD_PTB23),
 255         IMX_PINCTRL_PIN(VF610_PAD_PTB24),
 256         IMX_PINCTRL_PIN(VF610_PAD_PTB25),
 257         IMX_PINCTRL_PIN(VF610_PAD_PTB26),
 258         IMX_PINCTRL_PIN(VF610_PAD_PTB27),
 259         IMX_PINCTRL_PIN(VF610_PAD_PTB28),
 260         IMX_PINCTRL_PIN(VF610_PAD_PTC26),
 261         IMX_PINCTRL_PIN(VF610_PAD_PTC27),
 262         IMX_PINCTRL_PIN(VF610_PAD_PTC28),
 263         IMX_PINCTRL_PIN(VF610_PAD_PTC29),
 264         IMX_PINCTRL_PIN(VF610_PAD_PTC30),
 265         IMX_PINCTRL_PIN(VF610_PAD_PTC31),
 266         IMX_PINCTRL_PIN(VF610_PAD_PTE0),
 267         IMX_PINCTRL_PIN(VF610_PAD_PTE1),
 268         IMX_PINCTRL_PIN(VF610_PAD_PTE2),
 269         IMX_PINCTRL_PIN(VF610_PAD_PTE3),
 270         IMX_PINCTRL_PIN(VF610_PAD_PTE4),
 271         IMX_PINCTRL_PIN(VF610_PAD_PTE5),
 272         IMX_PINCTRL_PIN(VF610_PAD_PTE6),
 273         IMX_PINCTRL_PIN(VF610_PAD_PTE7),
 274         IMX_PINCTRL_PIN(VF610_PAD_PTE8),
 275         IMX_PINCTRL_PIN(VF610_PAD_PTE9),
 276         IMX_PINCTRL_PIN(VF610_PAD_PTE10),
 277         IMX_PINCTRL_PIN(VF610_PAD_PTE11),
 278         IMX_PINCTRL_PIN(VF610_PAD_PTE12),
 279         IMX_PINCTRL_PIN(VF610_PAD_PTE13),
 280         IMX_PINCTRL_PIN(VF610_PAD_PTE14),
 281         IMX_PINCTRL_PIN(VF610_PAD_PTE15),
 282         IMX_PINCTRL_PIN(VF610_PAD_PTE16),
 283         IMX_PINCTRL_PIN(VF610_PAD_PTE17),
 284         IMX_PINCTRL_PIN(VF610_PAD_PTE18),
 285         IMX_PINCTRL_PIN(VF610_PAD_PTE19),
 286         IMX_PINCTRL_PIN(VF610_PAD_PTE20),
 287         IMX_PINCTRL_PIN(VF610_PAD_PTE21),
 288         IMX_PINCTRL_PIN(VF610_PAD_PTE22),
 289         IMX_PINCTRL_PIN(VF610_PAD_PTE23),
 290         IMX_PINCTRL_PIN(VF610_PAD_PTE24),
 291         IMX_PINCTRL_PIN(VF610_PAD_PTE25),
 292         IMX_PINCTRL_PIN(VF610_PAD_PTE26),
 293         IMX_PINCTRL_PIN(VF610_PAD_PTE27),
 294         IMX_PINCTRL_PIN(VF610_PAD_PTE28),
 295         IMX_PINCTRL_PIN(VF610_PAD_PTA7),
 296 };
 297
 298 static int vf610_pmx_gpio_set_direction(struct pinctrl_dev *pctldev,
 299                                         struct pinctrl_gpio_range *range,
 300                                         unsigned offset, bool input)
 301 {
 302         struct imx_pinctrl *ipctl = pinctrl_dev_get_drvdata(pctldev);
 303         const struct imx_pin_reg *pin_reg;
 304         u32 reg;
 305
 306         pin_reg = &ipctl->pin_regs[offset];
 307         if (pin_reg->mux_reg == -1)
 308                 return -EINVAL;
 309
 310         /* IBE always enabled allows us to read the value "on the wire" */
 311         reg = readl(ipctl->base + pin_reg->mux_reg);
 312         if (input)
 313                 reg &= ~0x2;
 314         else
 315                 reg |= 0x2;
 316         writel(reg, ipctl->base + pin_reg->mux_reg);
 317
 318         return 0;
 319 }
 320
 321 static const struct imx_pinctrl_soc_info vf610_pinctrl_info = {
 322         .pins = vf610_pinctrl_pads,
 323         .npins = ARRAY_SIZE(vf610_pinctrl_pads),
 324         .flags = SHARE_MUX_CONF_REG | ZERO_OFFSET_VALID,
 325         .gpio_set_direction = vf610_pmx_gpio_set_direction,
 326         .mux_mask = 0x700000,
 327         .mux_shift = 20,
 328 };
 329
 330 static const struct of_device_id vf610_pinctrl_of_match[] = {
 331         { .compatible = "fsl,vf610-iomuxc", },
 332         { /* sentinel */ }
 333 };
 334
 335 static int vf610_pinctrl_probe(struct platform_device *pdev)
 336 {
 337         return imx_pinctrl_probe(pdev, &vf610_pinctrl_info);
 338 }
 339
 340 static struct platform_driver vf610_pinctrl_driver = {
 341         .driver = {
 342                 .name = "vf610-pinctrl",
 343                 .of_match_table = vf610_pinctrl_of_match,
 344         },
 345         .probe = vf610_pinctrl_probe,
 346 };
 347
 348 static int __init vf610_pinctrl_init(void)
 349 {
 350         return platform_driver_register(&vf610_pinctrl_driver);
 351 }
 352 arch_initcall(vf610_pinctrl_init);