drivers/pinctrl/mediatek/pinctrl-mt8135.c

   1 /*
   2  * Copyright (c) 2014 MediaTek Inc.
   3  * Author: Hongzhou.Yang <hongzhou.yang@mediatek.com>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #include <linux/init.h>
  16 #include <linux/platform_device.h>
  17 #include <linux/of.h>
  18 #include <linux/of_device.h>
  19 #include <linux/pinctrl/pinctrl.h>
  20 #include <linux/regmap.h>
  21 #include <dt-bindings/pinctrl/mt65xx.h>
  22
  23 #include "pinctrl-mtk-common.h"
  24 #include "pinctrl-mtk-mt8135.h"
  25
  26 #define DRV_BASE1                               0x500
  27 #define DRV_BASE2                               0x510
  28 #define PUPD_BASE1                              0x400
  29 #define PUPD_BASE2                              0x450
  30 #define R0_BASE1                                0x4d0
  31 #define R1_BASE1                                0x200
  32 #define R1_BASE2                                0x250
  33
  34 struct mtk_spec_pull_set {
  35         unsigned char pin;
  36         unsigned char pupd_bit;
  37         unsigned short pupd_offset;
  38         unsigned short r0_offset;
  39         unsigned short r1_offset;
  40         unsigned char r0_bit;
  41         unsigned char r1_bit;
  42 };
  43
  44 #define SPEC_PULL(_pin, _pupd_offset, _pupd_bit, _r0_offset, \
  45         _r0_bit, _r1_offset, _r1_bit)   \
  46         {       \
  47                 .pin = _pin,    \
  48                 .pupd_offset = _pupd_offset,    \
  49                 .pupd_bit = _pupd_bit,  \
  50                 .r0_offset = _r0_offset, \
  51                 .r0_bit = _r0_bit, \
  52                 .r1_offset = _r1_offset, \
  53                 .r1_bit = _r1_bit, \
  54         }
  55
  56 static const struct mtk_drv_group_desc mt8135_drv_grp[] =  {
  57         /* E8E4E2 2/4/6/8/10/12/14/16 */
  58         MTK_DRV_GRP(2, 16, 0, 2, 2),
  59         /* E8E4  4/8/12/16 */
  60         MTK_DRV_GRP(4, 16, 1, 2, 4),
  61         /* E4E2  2/4/6/8 */
  62         MTK_DRV_GRP(2, 8, 0, 1, 2),
  63         /* E16E8E4 4/8/12/16/20/24/28/32 */
  64         MTK_DRV_GRP(4, 32, 0, 2, 4)
  65 };
  66
  67 static const struct mtk_pin_drv_grp mt8135_pin_drv[] = {
  68         MTK_PIN_DRV_GRP(0, DRV_BASE1, 0, 0),
  69         MTK_PIN_DRV_GRP(1, DRV_BASE1, 0, 0),
  70         MTK_PIN_DRV_GRP(2, DRV_BASE1, 0, 0),
  71         MTK_PIN_DRV_GRP(3, DRV_BASE1, 0, 0),
  72         MTK_PIN_DRV_GRP(4, DRV_BASE1, 4, 0),
  73         MTK_PIN_DRV_GRP(5, DRV_BASE1, 8, 0),
  74         MTK_PIN_DRV_GRP(6, DRV_BASE1, 0, 0),
  75         MTK_PIN_DRV_GRP(7, DRV_BASE1, 0, 0),
  76         MTK_PIN_DRV_GRP(8, DRV_BASE1, 0, 0),
  77         MTK_PIN_DRV_GRP(9, DRV_BASE1, 0, 0),
  78
  79         MTK_PIN_DRV_GRP(10, DRV_BASE1, 12, 1),
  80         MTK_PIN_DRV_GRP(11, DRV_BASE1, 12, 1),
  81         MTK_PIN_DRV_GRP(12, DRV_BASE1, 12, 1),
  82         MTK_PIN_DRV_GRP(13, DRV_BASE1, 12, 1),
  83         MTK_PIN_DRV_GRP(14, DRV_BASE1, 12, 1),
  84         MTK_PIN_DRV_GRP(15, DRV_BASE1, 12, 1),
  85         MTK_PIN_DRV_GRP(16, DRV_BASE1, 12, 1),
  86         MTK_PIN_DRV_GRP(17, DRV_BASE1, 16, 1),
  87         MTK_PIN_DRV_GRP(18, DRV_BASE1, 16, 1),
  88         MTK_PIN_DRV_GRP(19, DRV_BASE1, 16, 1),
  89         MTK_PIN_DRV_GRP(20, DRV_BASE1, 16, 1),
  90         MTK_PIN_DRV_GRP(21, DRV_BASE1, 16, 1),
  91         MTK_PIN_DRV_GRP(22, DRV_BASE1, 16, 1),
  92         MTK_PIN_DRV_GRP(23, DRV_BASE1, 16, 1),
  93         MTK_PIN_DRV_GRP(24, DRV_BASE1, 16, 1),
  94         MTK_PIN_DRV_GRP(33, DRV_BASE1, 24, 1),
  95         MTK_PIN_DRV_GRP(34, DRV_BASE2, 12, 2),
  96         MTK_PIN_DRV_GRP(37, DRV_BASE2, 20, 1),
  97         MTK_PIN_DRV_GRP(38, DRV_BASE2, 20, 1),
  98         MTK_PIN_DRV_GRP(39, DRV_BASE2, 20, 1),
  99         MTK_PIN_DRV_GRP(40, DRV_BASE2, 24, 1),
 100         MTK_PIN_DRV_GRP(41, DRV_BASE2, 24, 1),
 101         MTK_PIN_DRV_GRP(42, DRV_BASE2, 24, 1),
 102         MTK_PIN_DRV_GRP(43, DRV_BASE2, 28, 1),
 103         MTK_PIN_DRV_GRP(44, DRV_BASE2, 28, 1),
 104         MTK_PIN_DRV_GRP(45, DRV_BASE2, 28, 1),
 105         MTK_PIN_DRV_GRP(46, DRV_BASE2, 28, 1),
 106         MTK_PIN_DRV_GRP(47, DRV_BASE2, 28, 1),
 107
 108         MTK_PIN_DRV_GRP(49, DRV_BASE2+0x10, 0, 1),
 109         MTK_PIN_DRV_GRP(50, DRV_BASE2+0x10, 4, 1),
 110         MTK_PIN_DRV_GRP(51, DRV_BASE2+0x10, 8, 1),
 111         MTK_PIN_DRV_GRP(52, DRV_BASE2+0x10, 12, 2),
 112         MTK_PIN_DRV_GRP(53, DRV_BASE2+0x10, 16, 1),
 113         MTK_PIN_DRV_GRP(54, DRV_BASE2+0x10, 20, 1),
 114         MTK_PIN_DRV_GRP(55, DRV_BASE2+0x10, 24, 1),
 115         MTK_PIN_DRV_GRP(56, DRV_BASE2+0x10, 28, 1),
 116
 117         MTK_PIN_DRV_GRP(57, DRV_BASE2+0x20, 0, 1),
 118         MTK_PIN_DRV_GRP(58, DRV_BASE2+0x20, 0, 1),
 119         MTK_PIN_DRV_GRP(59, DRV_BASE2+0x20, 0, 1),
 120         MTK_PIN_DRV_GRP(60, DRV_BASE2+0x20, 0, 1),
 121         MTK_PIN_DRV_GRP(61, DRV_BASE2+0x20, 0, 1),
 122         MTK_PIN_DRV_GRP(62, DRV_BASE2+0x20, 0, 1),
 123         MTK_PIN_DRV_GRP(63, DRV_BASE2+0x20, 4, 1),
 124         MTK_PIN_DRV_GRP(64, DRV_BASE2+0x20, 8, 1),
 125         MTK_PIN_DRV_GRP(65, DRV_BASE2+0x20, 12, 1),
 126         MTK_PIN_DRV_GRP(66, DRV_BASE2+0x20, 16, 1),
 127         MTK_PIN_DRV_GRP(67, DRV_BASE2+0x20, 20, 1),
 128         MTK_PIN_DRV_GRP(68, DRV_BASE2+0x20, 24, 1),
 129         MTK_PIN_DRV_GRP(69, DRV_BASE2+0x20, 28, 1),
 130
 131         MTK_PIN_DRV_GRP(70, DRV_BASE2+0x30, 0, 1),
 132         MTK_PIN_DRV_GRP(71, DRV_BASE2+0x30, 4, 1),
 133         MTK_PIN_DRV_GRP(72, DRV_BASE2+0x30, 8, 1),
 134         MTK_PIN_DRV_GRP(73, DRV_BASE2+0x30, 12, 1),
 135         MTK_PIN_DRV_GRP(74, DRV_BASE2+0x30, 16, 1),
 136         MTK_PIN_DRV_GRP(75, DRV_BASE2+0x30, 20, 1),
 137         MTK_PIN_DRV_GRP(76, DRV_BASE2+0x30, 24, 1),
 138         MTK_PIN_DRV_GRP(77, DRV_BASE2+0x30, 28, 3),
 139         MTK_PIN_DRV_GRP(78, DRV_BASE2+0x30, 28, 3),
 140
 141         MTK_PIN_DRV_GRP(79, DRV_BASE2+0x40, 0, 3),
 142         MTK_PIN_DRV_GRP(80, DRV_BASE2+0x40, 4, 3),
 143
 144         MTK_PIN_DRV_GRP(81, DRV_BASE2+0x30, 28, 3),
 145         MTK_PIN_DRV_GRP(82, DRV_BASE2+0x30, 28, 3),
 146
 147         MTK_PIN_DRV_GRP(83, DRV_BASE2+0x40, 8, 3),
 148         MTK_PIN_DRV_GRP(84, DRV_BASE2+0x40, 8, 3),
 149         MTK_PIN_DRV_GRP(85, DRV_BASE2+0x40, 12, 3),
 150         MTK_PIN_DRV_GRP(86, DRV_BASE2+0x40, 16, 3),
 151         MTK_PIN_DRV_GRP(87, DRV_BASE2+0x40, 8, 3),
 152         MTK_PIN_DRV_GRP(88, DRV_BASE2+0x40, 8, 3),
 153
 154         MTK_PIN_DRV_GRP(89, DRV_BASE2+0x50, 12, 0),
 155         MTK_PIN_DRV_GRP(90, DRV_BASE2+0x50, 12, 0),
 156         MTK_PIN_DRV_GRP(91, DRV_BASE2+0x50, 12, 0),
 157         MTK_PIN_DRV_GRP(92, DRV_BASE2+0x50, 12, 0),
 158         MTK_PIN_DRV_GRP(93, DRV_BASE2+0x50, 12, 0),
 159         MTK_PIN_DRV_GRP(94, DRV_BASE2+0x50, 12, 0),
 160         MTK_PIN_DRV_GRP(95, DRV_BASE2+0x50, 12, 0),
 161
 162         MTK_PIN_DRV_GRP(96, DRV_BASE1+0xb0, 28, 0),
 163
 164         MTK_PIN_DRV_GRP(97, DRV_BASE2+0x50, 12, 0),
 165         MTK_PIN_DRV_GRP(98, DRV_BASE2+0x50, 16, 0),
 166         MTK_PIN_DRV_GRP(99, DRV_BASE2+0x50, 20, 1),
 167         MTK_PIN_DRV_GRP(102, DRV_BASE2+0x50, 24, 1),
 168         MTK_PIN_DRV_GRP(103, DRV_BASE2+0x50, 28, 1),
 169
 170
 171         MTK_PIN_DRV_GRP(104, DRV_BASE2+0x60, 0, 1),
 172         MTK_PIN_DRV_GRP(105, DRV_BASE2+0x60, 4, 1),
 173         MTK_PIN_DRV_GRP(106, DRV_BASE2+0x60, 4, 1),
 174         MTK_PIN_DRV_GRP(107, DRV_BASE2+0x60, 4, 1),
 175         MTK_PIN_DRV_GRP(108, DRV_BASE2+0x60, 4, 1),
 176         MTK_PIN_DRV_GRP(109, DRV_BASE2+0x60, 8, 2),
 177         MTK_PIN_DRV_GRP(110, DRV_BASE2+0x60, 12, 2),
 178         MTK_PIN_DRV_GRP(111, DRV_BASE2+0x60, 16, 2),
 179         MTK_PIN_DRV_GRP(112, DRV_BASE2+0x60, 20, 2),
 180         MTK_PIN_DRV_GRP(113, DRV_BASE2+0x60, 24, 2),
 181         MTK_PIN_DRV_GRP(114, DRV_BASE2+0x60, 28, 2),
 182
 183         MTK_PIN_DRV_GRP(115, DRV_BASE2+0x70, 0, 2),
 184         MTK_PIN_DRV_GRP(116, DRV_BASE2+0x70, 4, 2),
 185         MTK_PIN_DRV_GRP(117, DRV_BASE2+0x70, 8, 2),
 186         MTK_PIN_DRV_GRP(118, DRV_BASE2+0x70, 12, 2),
 187         MTK_PIN_DRV_GRP(119, DRV_BASE2+0x70, 16, 2),
 188         MTK_PIN_DRV_GRP(120, DRV_BASE2+0x70, 20, 2),
 189
 190         MTK_PIN_DRV_GRP(181, DRV_BASE1+0xa0, 12, 1),
 191         MTK_PIN_DRV_GRP(182, DRV_BASE1+0xa0, 16, 1),
 192         MTK_PIN_DRV_GRP(183, DRV_BASE1+0xa0, 20, 1),
 193         MTK_PIN_DRV_GRP(184, DRV_BASE1+0xa0, 24, 1),
 194         MTK_PIN_DRV_GRP(185, DRV_BASE1+0xa0, 28, 1),
 195
 196         MTK_PIN_DRV_GRP(186, DRV_BASE1+0xb0, 0, 2),
 197         MTK_PIN_DRV_GRP(187, DRV_BASE1+0xb0, 0, 2),
 198         MTK_PIN_DRV_GRP(188, DRV_BASE1+0xb0, 0, 2),
 199         MTK_PIN_DRV_GRP(189, DRV_BASE1+0xb0, 0, 2),
 200         MTK_PIN_DRV_GRP(190, DRV_BASE1+0xb0, 4, 1),
 201         MTK_PIN_DRV_GRP(191, DRV_BASE1+0xb0, 8, 1),
 202         MTK_PIN_DRV_GRP(192, DRV_BASE1+0xb0, 12, 1),
 203
 204         MTK_PIN_DRV_GRP(197, DRV_BASE1+0xb0, 16, 0),
 205         MTK_PIN_DRV_GRP(198, DRV_BASE1+0xb0, 16, 0),
 206         MTK_PIN_DRV_GRP(199, DRV_BASE1+0xb0, 20, 0),
 207         MTK_PIN_DRV_GRP(200, DRV_BASE1+0xb0, 24, 0),
 208         MTK_PIN_DRV_GRP(201, DRV_BASE1+0xb0, 16, 0),
 209         MTK_PIN_DRV_GRP(202, DRV_BASE1+0xb0, 16, 0)
 210 };
 211
 212 static const struct mtk_spec_pull_set spec_pupd[] = {
 213         SPEC_PULL(0, PUPD_BASE1, 0, R0_BASE1, 9, R1_BASE1, 0),
 214         SPEC_PULL(1, PUPD_BASE1, 1, R0_BASE1, 8, R1_BASE1, 1),
 215         SPEC_PULL(2, PUPD_BASE1, 2, R0_BASE1, 7, R1_BASE1, 2),
 216         SPEC_PULL(3, PUPD_BASE1, 3, R0_BASE1, 6, R1_BASE1, 3),
 217         SPEC_PULL(4, PUPD_BASE1, 4, R0_BASE1, 1, R1_BASE1, 4),
 218         SPEC_PULL(5, PUPD_BASE1, 5, R0_BASE1, 0, R1_BASE1, 5),
 219         SPEC_PULL(6, PUPD_BASE1, 6, R0_BASE1, 5, R1_BASE1, 6),
 220         SPEC_PULL(7, PUPD_BASE1, 7, R0_BASE1, 4, R1_BASE1, 7),
 221         SPEC_PULL(8, PUPD_BASE1, 8, R0_BASE1, 3, R1_BASE1, 8),
 222         SPEC_PULL(9, PUPD_BASE1, 9, R0_BASE1, 2, R1_BASE1, 9),
 223         SPEC_PULL(89, PUPD_BASE2, 9, R0_BASE1, 18, R1_BASE2, 9),
 224         SPEC_PULL(90, PUPD_BASE2, 10, R0_BASE1, 19, R1_BASE2, 10),
 225         SPEC_PULL(91, PUPD_BASE2, 11, R0_BASE1, 23, R1_BASE2, 11),
 226         SPEC_PULL(92, PUPD_BASE2, 12, R0_BASE1, 24, R1_BASE2, 12),
 227         SPEC_PULL(93, PUPD_BASE2, 13, R0_BASE1, 25, R1_BASE2, 13),
 228         SPEC_PULL(94, PUPD_BASE2, 14, R0_BASE1, 22, R1_BASE2, 14),
 229         SPEC_PULL(95, PUPD_BASE2, 15, R0_BASE1, 20, R1_BASE2, 15),
 230         SPEC_PULL(96, PUPD_BASE2+0x10, 0, R0_BASE1, 16, R1_BASE2+0x10, 0),
 231         SPEC_PULL(97, PUPD_BASE2+0x10, 1, R0_BASE1, 21, R1_BASE2+0x10, 1),
 232         SPEC_PULL(98, PUPD_BASE2+0x10, 2, R0_BASE1, 17, R1_BASE2+0x10, 2),
 233         SPEC_PULL(197, PUPD_BASE1+0xc0, 5, R0_BASE1, 13, R1_BASE2+0xc0, 5),
 234         SPEC_PULL(198, PUPD_BASE2+0xc0, 6, R0_BASE1, 14, R1_BASE2+0xc0, 6),
 235         SPEC_PULL(199, PUPD_BASE2+0xc0, 7, R0_BASE1, 11, R1_BASE2+0xc0, 7),
 236         SPEC_PULL(200, PUPD_BASE2+0xc0, 8, R0_BASE1, 10, R1_BASE2+0xc0, 8),
 237         SPEC_PULL(201, PUPD_BASE2+0xc0, 9, R0_BASE1, 13, R1_BASE2+0xc0, 9),
 238         SPEC_PULL(202, PUPD_BASE2+0xc0, 10, R0_BASE1, 12, R1_BASE2+0xc0, 10)
 239 };
 240
 241 static int spec_pull_set(struct regmap *regmap, unsigned int pin,
 242                 unsigned char align, bool isup, unsigned int r1r0)
 243 {
 244         unsigned int i;
 245         unsigned int reg_pupd, reg_set_r0, reg_set_r1;
 246         unsigned int reg_rst_r0, reg_rst_r1;
 247         bool find = false;
 248
 249         for (i = 0; i < ARRAY_SIZE(spec_pupd); i++) {
 250                 if (pin == spec_pupd[i].pin) {
 251                         find = true;
 252                         break;
 253                 }
 254         }
 255
 256         if (!find)
 257                 return -EINVAL;
 258
 259         if (isup)
 260                 reg_pupd = spec_pupd[i].pupd_offset + align;
 261         else
 262                 reg_pupd = spec_pupd[i].pupd_offset + (align << 1);
 263
 264         regmap_write(regmap, reg_pupd, spec_pupd[i].pupd_bit);
 265
 266         reg_set_r0 = spec_pupd[i].r0_offset + align;
 267         reg_rst_r0 = spec_pupd[i].r0_offset + (align << 1);
 268         reg_set_r1 = spec_pupd[i].r1_offset + align;
 269         reg_rst_r1 = spec_pupd[i].r1_offset + (align << 1);
 270
 271         switch (r1r0) {
 272         case MTK_PUPD_SET_R1R0_00:
 273                 regmap_write(regmap, reg_rst_r0, spec_pupd[i].r0_bit);
 274                 regmap_write(regmap, reg_rst_r1, spec_pupd[i].r1_bit);
 275                 break;
 276         case MTK_PUPD_SET_R1R0_01:
 277                 regmap_write(regmap, reg_set_r0, spec_pupd[i].r0_bit);
 278                 regmap_write(regmap, reg_rst_r1, spec_pupd[i].r1_bit);
 279                 break;
 280         case MTK_PUPD_SET_R1R0_10:
 281                 regmap_write(regmap, reg_rst_r0, spec_pupd[i].r0_bit);
 282                 regmap_write(regmap, reg_set_r1, spec_pupd[i].r1_bit);
 283                 break;
 284         case MTK_PUPD_SET_R1R0_11:
 285                 regmap_write(regmap, reg_set_r0, spec_pupd[i].r0_bit);
 286                 regmap_write(regmap, reg_set_r1, spec_pupd[i].r1_bit);
 287                 break;
 288         default:
 289                 return -EINVAL;
 290         }
 291
 292         return 0;
 293 }
 294
 295 static const struct mtk_pinctrl_devdata mt8135_pinctrl_data = {
 296         .pins = mtk_pins_mt8135,
 297         .npins = ARRAY_SIZE(mtk_pins_mt8135),
 298         .grp_desc = mt8135_drv_grp,
 299         .n_grp_cls = ARRAY_SIZE(mt8135_drv_grp),
 300         .pin_drv_grp = mt8135_pin_drv,
 301         .n_pin_drv_grps = ARRAY_SIZE(mt8135_pin_drv),
 302         .spec_pull_set = spec_pull_set,
 303         .dir_offset = 0x0000,
 304         .ies_offset = 0x0100,
 305         .pullen_offset = 0x0200,
 306         .smt_offset = 0x0300,
 307         .pullsel_offset = 0x0400,
 308         .dout_offset = 0x0800,
 309         .din_offset = 0x0A00,
 310         .pinmux_offset = 0x0C00,
 311         .type1_start = 34,
 312         .type1_end = 149,
 313         .port_shf = 4,
 314         .port_mask = 0xf,
 315         .port_align = 4,
 316         .eint_offsets = {
 317                 .name = "mt8135_eint",
 318                 .stat      = 0x000,
 319                 .ack       = 0x040,
 320                 .mask      = 0x080,
 321                 .mask_set  = 0x0c0,
 322                 .mask_clr  = 0x100,
 323                 .sens      = 0x140,
 324                 .sens_set  = 0x180,
 325                 .sens_clr  = 0x1c0,
 326                 .soft      = 0x200,
 327                 .soft_set  = 0x240,
 328                 .soft_clr  = 0x280,
 329                 .pol       = 0x300,
 330                 .pol_set   = 0x340,
 331                 .pol_clr   = 0x380,
 332                 .dom_en    = 0x400,
 333                 .dbnc_ctrl = 0x500,
 334                 .dbnc_set  = 0x600,
 335                 .dbnc_clr  = 0x700,
 336                 .port_mask = 7,
 337                 .ports     = 6,
 338         },
 339         .ap_num = 192,
 340         .db_cnt = 16,
 341 };
 342
 343 static int mt8135_pinctrl_probe(struct platform_device *pdev)
 344 {
 345         return mtk_pctrl_init(pdev, &mt8135_pinctrl_data, NULL);
 346 }
 347
 348 static const struct of_device_id mt8135_pctrl_match[] = {
 349         {
 350                 .compatible = "mediatek,mt8135-pinctrl",
 351         },
 352         { }
 353 };
 354
 355 static struct platform_driver mtk_pinctrl_driver = {
 356         .probe = mt8135_pinctrl_probe,
 357         .driver = {
 358                 .name = "mediatek-mt8135-pinctrl",
 359                 .of_match_table = mt8135_pctrl_match,
 360         },
 361 };
 362
 363 static int __init mtk_pinctrl_init(void)
 364 {
 365         return platform_driver_register(&mtk_pinctrl_driver);
 366 }
 367 arch_initcall(mtk_pinctrl_init);