drivers/gpu/drm/panel/panel-ilitek-ili9881c.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (C) 2017-2018, Bootlin
   4  */
   5
   6 #include <linux/delay.h>
   7 #include <linux/device.h>
   8 #include <linux/err.h>
   9 #include <linux/errno.h>
  10 #include <linux/fb.h>
  11 #include <linux/kernel.h>
  12 #include <linux/module.h>
  13 #include <linux/of_device.h>
  14
  15 #include <linux/gpio/consumer.h>
  16 #include <linux/regulator/consumer.h>
  17
  18 #include <drm/drm_mipi_dsi.h>
  19 #include <drm/drm_modes.h>
  20 #include <drm/drm_panel.h>
  21
  22 #include <video/mipi_display.h>
  23
  24 enum ili9881c_op {
  25         ILI9881C_SWITCH_PAGE,
  26         ILI9881C_COMMAND,
  27 };
  28
  29 struct ili9881c_instr {
  30         enum ili9881c_op        op;
  31
  32         union arg {
  33                 struct cmd {
  34                         u8      cmd;
  35                         u8      data;
  36                 } cmd;
  37                 u8      page;
  38         } arg;
  39 };
  40
  41 struct ili9881c_desc {
  42         const struct ili9881c_instr *init;
  43         const size_t init_length;
  44         const struct drm_display_mode *mode;
  45         const unsigned long mode_flags;
  46 };
  47
  48 struct ili9881c {
  49         struct drm_panel        panel;
  50         struct mipi_dsi_device  *dsi;
  51         const struct ili9881c_desc      *desc;
  52
  53         struct regulator        *power;
  54         struct gpio_desc        *reset;
  55
  56         enum drm_panel_orientation      orientation;
  57 };
  58
  59 #define ILI9881C_SWITCH_PAGE_INSTR(_page)       \
  60         {                                       \
  61                 .op = ILI9881C_SWITCH_PAGE,     \
  62                 .arg = {                        \
  63                         .page = (_page),        \
  64                 },                              \
  65         }
  66
  67 #define ILI9881C_COMMAND_INSTR(_cmd, _data)             \
  68         {                                               \
  69                 .op = ILI9881C_COMMAND,         \
  70                 .arg = {                                \
  71                         .cmd = {                        \
  72                                 .cmd = (_cmd),          \
  73                                 .data = (_data),        \
  74                         },                              \
  75                 },                                      \
  76         }
  77
  78 static const struct ili9881c_instr lhr050h41_init[] = {
  79         ILI9881C_SWITCH_PAGE_INSTR(3),
  80         ILI9881C_COMMAND_INSTR(0x01, 0x00),
  81         ILI9881C_COMMAND_INSTR(0x02, 0x00),
  82         ILI9881C_COMMAND_INSTR(0x03, 0x73),
  83         ILI9881C_COMMAND_INSTR(0x04, 0x03),
  84         ILI9881C_COMMAND_INSTR(0x05, 0x00),
  85         ILI9881C_COMMAND_INSTR(0x06, 0x06),
  86         ILI9881C_COMMAND_INSTR(0x07, 0x06),
  87         ILI9881C_COMMAND_INSTR(0x08, 0x00),
  88         ILI9881C_COMMAND_INSTR(0x09, 0x18),
  89         ILI9881C_COMMAND_INSTR(0x0a, 0x04),
  90         ILI9881C_COMMAND_INSTR(0x0b, 0x00),
  91         ILI9881C_COMMAND_INSTR(0x0c, 0x02),
  92         ILI9881C_COMMAND_INSTR(0x0d, 0x03),
  93         ILI9881C_COMMAND_INSTR(0x0e, 0x00),
  94         ILI9881C_COMMAND_INSTR(0x0f, 0x25),
  95         ILI9881C_COMMAND_INSTR(0x10, 0x25),
  96         ILI9881C_COMMAND_INSTR(0x11, 0x00),
  97         ILI9881C_COMMAND_INSTR(0x12, 0x00),
  98         ILI9881C_COMMAND_INSTR(0x13, 0x00),
  99         ILI9881C_COMMAND_INSTR(0x14, 0x00),
 100         ILI9881C_COMMAND_INSTR(0x15, 0x00),
 101         ILI9881C_COMMAND_INSTR(0x16, 0x0C),
 102         ILI9881C_COMMAND_INSTR(0x17, 0x00),
 103         ILI9881C_COMMAND_INSTR(0x18, 0x00),
 104         ILI9881C_COMMAND_INSTR(0x19, 0x00),
 105         ILI9881C_COMMAND_INSTR(0x1a, 0x00),
 106         ILI9881C_COMMAND_INSTR(0x1b, 0x00),
 107         ILI9881C_COMMAND_INSTR(0x1c, 0x00),
 108         ILI9881C_COMMAND_INSTR(0x1d, 0x00),
 109         ILI9881C_COMMAND_INSTR(0x1e, 0xC0),
 110         ILI9881C_COMMAND_INSTR(0x1f, 0x80),
 111         ILI9881C_COMMAND_INSTR(0x20, 0x04),
 112         ILI9881C_COMMAND_INSTR(0x21, 0x01),
 113         ILI9881C_COMMAND_INSTR(0x22, 0x00),
 114         ILI9881C_COMMAND_INSTR(0x23, 0x00),
 115         ILI9881C_COMMAND_INSTR(0x24, 0x00),
 116         ILI9881C_COMMAND_INSTR(0x25, 0x00),
 117         ILI9881C_COMMAND_INSTR(0x26, 0x00),
 118         ILI9881C_COMMAND_INSTR(0x27, 0x00),
 119         ILI9881C_COMMAND_INSTR(0x28, 0x33),
 120         ILI9881C_COMMAND_INSTR(0x29, 0x03),
 121         ILI9881C_COMMAND_INSTR(0x2a, 0x00),
 122         ILI9881C_COMMAND_INSTR(0x2b, 0x00),
 123         ILI9881C_COMMAND_INSTR(0x2c, 0x00),
 124         ILI9881C_COMMAND_INSTR(0x2d, 0x00),
 125         ILI9881C_COMMAND_INSTR(0x2e, 0x00),
 126         ILI9881C_COMMAND_INSTR(0x2f, 0x00),
 127         ILI9881C_COMMAND_INSTR(0x30, 0x00),
 128         ILI9881C_COMMAND_INSTR(0x31, 0x00),
 129         ILI9881C_COMMAND_INSTR(0x32, 0x00),
 130         ILI9881C_COMMAND_INSTR(0x33, 0x00),
 131         ILI9881C_COMMAND_INSTR(0x34, 0x04),
 132         ILI9881C_COMMAND_INSTR(0x35, 0x00),
 133         ILI9881C_COMMAND_INSTR(0x36, 0x00),
 134         ILI9881C_COMMAND_INSTR(0x37, 0x00),
 135         ILI9881C_COMMAND_INSTR(0x38, 0x3C),
 136         ILI9881C_COMMAND_INSTR(0x39, 0x00),
 137         ILI9881C_COMMAND_INSTR(0x3a, 0x00),
 138         ILI9881C_COMMAND_INSTR(0x3b, 0x00),
 139         ILI9881C_COMMAND_INSTR(0x3c, 0x00),
 140         ILI9881C_COMMAND_INSTR(0x3d, 0x00),
 141         ILI9881C_COMMAND_INSTR(0x3e, 0x00),
 142         ILI9881C_COMMAND_INSTR(0x3f, 0x00),
 143         ILI9881C_COMMAND_INSTR(0x40, 0x00),
 144         ILI9881C_COMMAND_INSTR(0x41, 0x00),
 145         ILI9881C_COMMAND_INSTR(0x42, 0x00),
 146         ILI9881C_COMMAND_INSTR(0x43, 0x00),
 147         ILI9881C_COMMAND_INSTR(0x44, 0x00),
 148         ILI9881C_COMMAND_INSTR(0x50, 0x01),
 149         ILI9881C_COMMAND_INSTR(0x51, 0x23),
 150         ILI9881C_COMMAND_INSTR(0x52, 0x45),
 151         ILI9881C_COMMAND_INSTR(0x53, 0x67),
 152         ILI9881C_COMMAND_INSTR(0x54, 0x89),
 153         ILI9881C_COMMAND_INSTR(0x55, 0xab),
 154         ILI9881C_COMMAND_INSTR(0x56, 0x01),
 155         ILI9881C_COMMAND_INSTR(0x57, 0x23),
 156         ILI9881C_COMMAND_INSTR(0x58, 0x45),
 157         ILI9881C_COMMAND_INSTR(0x59, 0x67),
 158         ILI9881C_COMMAND_INSTR(0x5a, 0x89),
 159         ILI9881C_COMMAND_INSTR(0x5b, 0xab),
 160         ILI9881C_COMMAND_INSTR(0x5c, 0xcd),
 161         ILI9881C_COMMAND_INSTR(0x5d, 0xef),
 162         ILI9881C_COMMAND_INSTR(0x5e, 0x11),
 163         ILI9881C_COMMAND_INSTR(0x5f, 0x02),
 164         ILI9881C_COMMAND_INSTR(0x60, 0x02),
 165         ILI9881C_COMMAND_INSTR(0x61, 0x02),
 166         ILI9881C_COMMAND_INSTR(0x62, 0x02),
 167         ILI9881C_COMMAND_INSTR(0x63, 0x02),
 168         ILI9881C_COMMAND_INSTR(0x64, 0x02),
 169         ILI9881C_COMMAND_INSTR(0x65, 0x02),
 170         ILI9881C_COMMAND_INSTR(0x66, 0x02),
 171         ILI9881C_COMMAND_INSTR(0x67, 0x02),
 172         ILI9881C_COMMAND_INSTR(0x68, 0x02),
 173         ILI9881C_COMMAND_INSTR(0x69, 0x02),
 174         ILI9881C_COMMAND_INSTR(0x6a, 0x0C),
 175         ILI9881C_COMMAND_INSTR(0x6b, 0x02),
 176         ILI9881C_COMMAND_INSTR(0x6c, 0x0F),
 177         ILI9881C_COMMAND_INSTR(0x6d, 0x0E),
 178         ILI9881C_COMMAND_INSTR(0x6e, 0x0D),
 179         ILI9881C_COMMAND_INSTR(0x6f, 0x06),
 180         ILI9881C_COMMAND_INSTR(0x70, 0x07),
 181         ILI9881C_COMMAND_INSTR(0x71, 0x02),
 182         ILI9881C_COMMAND_INSTR(0x72, 0x02),
 183         ILI9881C_COMMAND_INSTR(0x73, 0x02),
 184         ILI9881C_COMMAND_INSTR(0x74, 0x02),
 185         ILI9881C_COMMAND_INSTR(0x75, 0x02),
 186         ILI9881C_COMMAND_INSTR(0x76, 0x02),
 187         ILI9881C_COMMAND_INSTR(0x77, 0x02),
 188         ILI9881C_COMMAND_INSTR(0x78, 0x02),
 189         ILI9881C_COMMAND_INSTR(0x79, 0x02),
 190         ILI9881C_COMMAND_INSTR(0x7a, 0x02),
 191         ILI9881C_COMMAND_INSTR(0x7b, 0x02),
 192         ILI9881C_COMMAND_INSTR(0x7c, 0x02),
 193         ILI9881C_COMMAND_INSTR(0x7d, 0x02),
 194         ILI9881C_COMMAND_INSTR(0x7e, 0x02),
 195         ILI9881C_COMMAND_INSTR(0x7f, 0x02),
 196         ILI9881C_COMMAND_INSTR(0x80, 0x0C),
 197         ILI9881C_COMMAND_INSTR(0x81, 0x02),
 198         ILI9881C_COMMAND_INSTR(0x82, 0x0F),
 199         ILI9881C_COMMAND_INSTR(0x83, 0x0E),
 200         ILI9881C_COMMAND_INSTR(0x84, 0x0D),
 201         ILI9881C_COMMAND_INSTR(0x85, 0x06),
 202         ILI9881C_COMMAND_INSTR(0x86, 0x07),
 203         ILI9881C_COMMAND_INSTR(0x87, 0x02),
 204         ILI9881C_COMMAND_INSTR(0x88, 0x02),
 205         ILI9881C_COMMAND_INSTR(0x89, 0x02),
 206         ILI9881C_COMMAND_INSTR(0x8A, 0x02),
 207         ILI9881C_SWITCH_PAGE_INSTR(4),
 208         ILI9881C_COMMAND_INSTR(0x6C, 0x15),
 209         ILI9881C_COMMAND_INSTR(0x6E, 0x22),
 210         ILI9881C_COMMAND_INSTR(0x6F, 0x33),
 211         ILI9881C_COMMAND_INSTR(0x3A, 0xA4),
 212         ILI9881C_COMMAND_INSTR(0x8D, 0x0D),
 213         ILI9881C_COMMAND_INSTR(0x87, 0xBA),
 214         ILI9881C_COMMAND_INSTR(0x26, 0x76),
 215         ILI9881C_COMMAND_INSTR(0xB2, 0xD1),
 216         ILI9881C_SWITCH_PAGE_INSTR(1),
 217         ILI9881C_COMMAND_INSTR(0x22, 0x0A),
 218         ILI9881C_COMMAND_INSTR(0x53, 0xDC),
 219         ILI9881C_COMMAND_INSTR(0x55, 0xA7),
 220         ILI9881C_COMMAND_INSTR(0x50, 0x78),
 221         ILI9881C_COMMAND_INSTR(0x51, 0x78),
 222         ILI9881C_COMMAND_INSTR(0x31, 0x02),
 223         ILI9881C_COMMAND_INSTR(0x60, 0x14),
 224         ILI9881C_COMMAND_INSTR(0xA0, 0x2A),
 225         ILI9881C_COMMAND_INSTR(0xA1, 0x39),
 226         ILI9881C_COMMAND_INSTR(0xA2, 0x46),
 227         ILI9881C_COMMAND_INSTR(0xA3, 0x0e),
 228         ILI9881C_COMMAND_INSTR(0xA4, 0x12),
 229         ILI9881C_COMMAND_INSTR(0xA5, 0x25),
 230         ILI9881C_COMMAND_INSTR(0xA6, 0x19),
 231         ILI9881C_COMMAND_INSTR(0xA7, 0x1d),
 232         ILI9881C_COMMAND_INSTR(0xA8, 0xa6),
 233         ILI9881C_COMMAND_INSTR(0xA9, 0x1C),
 234         ILI9881C_COMMAND_INSTR(0xAA, 0x29),
 235         ILI9881C_COMMAND_INSTR(0xAB, 0x85),
 236         ILI9881C_COMMAND_INSTR(0xAC, 0x1C),
 237         ILI9881C_COMMAND_INSTR(0xAD, 0x1B),
 238         ILI9881C_COMMAND_INSTR(0xAE, 0x51),
 239         ILI9881C_COMMAND_INSTR(0xAF, 0x22),
 240         ILI9881C_COMMAND_INSTR(0xB0, 0x2d),
 241         ILI9881C_COMMAND_INSTR(0xB1, 0x4f),
 242         ILI9881C_COMMAND_INSTR(0xB2, 0x59),
 243         ILI9881C_COMMAND_INSTR(0xB3, 0x3F),
 244         ILI9881C_COMMAND_INSTR(0xC0, 0x2A),
 245         ILI9881C_COMMAND_INSTR(0xC1, 0x3a),
 246         ILI9881C_COMMAND_INSTR(0xC2, 0x45),
 247         ILI9881C_COMMAND_INSTR(0xC3, 0x0e),
 248         ILI9881C_COMMAND_INSTR(0xC4, 0x11),
 249         ILI9881C_COMMAND_INSTR(0xC5, 0x24),
 250         ILI9881C_COMMAND_INSTR(0xC6, 0x1a),
 251         ILI9881C_COMMAND_INSTR(0xC7, 0x1c),
 252         ILI9881C_COMMAND_INSTR(0xC8, 0xaa),
 253         ILI9881C_COMMAND_INSTR(0xC9, 0x1C),
 254         ILI9881C_COMMAND_INSTR(0xCA, 0x29),
 255         ILI9881C_COMMAND_INSTR(0xCB, 0x96),
 256         ILI9881C_COMMAND_INSTR(0xCC, 0x1C),
 257         ILI9881C_COMMAND_INSTR(0xCD, 0x1B),
 258         ILI9881C_COMMAND_INSTR(0xCE, 0x51),
 259         ILI9881C_COMMAND_INSTR(0xCF, 0x22),
 260         ILI9881C_COMMAND_INSTR(0xD0, 0x2b),
 261         ILI9881C_COMMAND_INSTR(0xD1, 0x4b),
 262         ILI9881C_COMMAND_INSTR(0xD2, 0x59),
 263         ILI9881C_COMMAND_INSTR(0xD3, 0x3F),
 264 };
 265
 266 static const struct ili9881c_instr k101_im2byl02_init[] = {
 267         ILI9881C_SWITCH_PAGE_INSTR(3),
 268         ILI9881C_COMMAND_INSTR(0x01, 0x00),
 269         ILI9881C_COMMAND_INSTR(0x02, 0x00),
 270         ILI9881C_COMMAND_INSTR(0x03, 0x73),
 271         ILI9881C_COMMAND_INSTR(0x04, 0x00),
 272         ILI9881C_COMMAND_INSTR(0x05, 0x00),
 273         ILI9881C_COMMAND_INSTR(0x06, 0x08),
 274         ILI9881C_COMMAND_INSTR(0x07, 0x00),
 275         ILI9881C_COMMAND_INSTR(0x08, 0x00),
 276         ILI9881C_COMMAND_INSTR(0x09, 0x00),
 277         ILI9881C_COMMAND_INSTR(0x0A, 0x01),
 278         ILI9881C_COMMAND_INSTR(0x0B, 0x01),
 279         ILI9881C_COMMAND_INSTR(0x0C, 0x00),
 280         ILI9881C_COMMAND_INSTR(0x0D, 0x01),
 281         ILI9881C_COMMAND_INSTR(0x0E, 0x01),
 282         ILI9881C_COMMAND_INSTR(0x0F, 0x00),
 283         ILI9881C_COMMAND_INSTR(0x10, 0x00),
 284         ILI9881C_COMMAND_INSTR(0x11, 0x00),
 285         ILI9881C_COMMAND_INSTR(0x12, 0x00),
 286         ILI9881C_COMMAND_INSTR(0x13, 0x00),
 287         ILI9881C_COMMAND_INSTR(0x14, 0x00),
 288         ILI9881C_COMMAND_INSTR(0x15, 0x00),
 289         ILI9881C_COMMAND_INSTR(0x16, 0x00),
 290         ILI9881C_COMMAND_INSTR(0x17, 0x00),
 291         ILI9881C_COMMAND_INSTR(0x18, 0x00),
 292         ILI9881C_COMMAND_INSTR(0x19, 0x00),
 293         ILI9881C_COMMAND_INSTR(0x1A, 0x00),
 294         ILI9881C_COMMAND_INSTR(0x1B, 0x00),
 295         ILI9881C_COMMAND_INSTR(0x1C, 0x00),
 296         ILI9881C_COMMAND_INSTR(0x1D, 0x00),
 297         ILI9881C_COMMAND_INSTR(0x1E, 0x40),
 298         ILI9881C_COMMAND_INSTR(0x1F, 0xC0),
 299         ILI9881C_COMMAND_INSTR(0x20, 0x06),
 300         ILI9881C_COMMAND_INSTR(0x21, 0x01),
 301         ILI9881C_COMMAND_INSTR(0x22, 0x06),
 302         ILI9881C_COMMAND_INSTR(0x23, 0x01),
 303         ILI9881C_COMMAND_INSTR(0x24, 0x88),
 304         ILI9881C_COMMAND_INSTR(0x25, 0x88),
 305         ILI9881C_COMMAND_INSTR(0x26, 0x00),
 306         ILI9881C_COMMAND_INSTR(0x27, 0x00),
 307         ILI9881C_COMMAND_INSTR(0x28, 0x3B),
 308         ILI9881C_COMMAND_INSTR(0x29, 0x03),
 309         ILI9881C_COMMAND_INSTR(0x2A, 0x00),
 310         ILI9881C_COMMAND_INSTR(0x2B, 0x00),
 311         ILI9881C_COMMAND_INSTR(0x2C, 0x00),
 312         ILI9881C_COMMAND_INSTR(0x2D, 0x00),
 313         ILI9881C_COMMAND_INSTR(0x2E, 0x00),
 314         ILI9881C_COMMAND_INSTR(0x2F, 0x00),
 315         ILI9881C_COMMAND_INSTR(0x30, 0x00),
 316         ILI9881C_COMMAND_INSTR(0x31, 0x00),
 317         ILI9881C_COMMAND_INSTR(0x32, 0x00),
 318         ILI9881C_COMMAND_INSTR(0x33, 0x00),
 319         ILI9881C_COMMAND_INSTR(0x34, 0x00), /* GPWR1/2 non overlap time 2.62us */
 320         ILI9881C_COMMAND_INSTR(0x35, 0x00),
 321         ILI9881C_COMMAND_INSTR(0x36, 0x00),
 322         ILI9881C_COMMAND_INSTR(0x37, 0x00),
 323         ILI9881C_COMMAND_INSTR(0x38, 0x00),
 324         ILI9881C_COMMAND_INSTR(0x39, 0x00),
 325         ILI9881C_COMMAND_INSTR(0x3A, 0x00),
 326         ILI9881C_COMMAND_INSTR(0x3B, 0x00),
 327         ILI9881C_COMMAND_INSTR(0x3C, 0x00),
 328         ILI9881C_COMMAND_INSTR(0x3D, 0x00),
 329         ILI9881C_COMMAND_INSTR(0x3E, 0x00),
 330         ILI9881C_COMMAND_INSTR(0x3F, 0x00),
 331         ILI9881C_COMMAND_INSTR(0x40, 0x00),
 332         ILI9881C_COMMAND_INSTR(0x41, 0x00),
 333         ILI9881C_COMMAND_INSTR(0x42, 0x00),
 334         ILI9881C_COMMAND_INSTR(0x43, 0x00),
 335         ILI9881C_COMMAND_INSTR(0x44, 0x00),
 336         ILI9881C_COMMAND_INSTR(0x50, 0x01),
 337         ILI9881C_COMMAND_INSTR(0x51, 0x23),
 338         ILI9881C_COMMAND_INSTR(0x52, 0x45),
 339         ILI9881C_COMMAND_INSTR(0x53, 0x67),
 340         ILI9881C_COMMAND_INSTR(0x54, 0x89),
 341         ILI9881C_COMMAND_INSTR(0x55, 0xAB),
 342         ILI9881C_COMMAND_INSTR(0x56, 0x01),
 343         ILI9881C_COMMAND_INSTR(0x57, 0x23),
 344         ILI9881C_COMMAND_INSTR(0x58, 0x45),
 345         ILI9881C_COMMAND_INSTR(0x59, 0x67),
 346         ILI9881C_COMMAND_INSTR(0x5A, 0x89),
 347         ILI9881C_COMMAND_INSTR(0x5B, 0xAB),
 348         ILI9881C_COMMAND_INSTR(0x5C, 0xCD),
 349         ILI9881C_COMMAND_INSTR(0x5D, 0xEF),
 350         ILI9881C_COMMAND_INSTR(0x5E, 0x00),
 351         ILI9881C_COMMAND_INSTR(0x5F, 0x01),
 352         ILI9881C_COMMAND_INSTR(0x60, 0x01),
 353         ILI9881C_COMMAND_INSTR(0x61, 0x06),
 354         ILI9881C_COMMAND_INSTR(0x62, 0x06),
 355         ILI9881C_COMMAND_INSTR(0x63, 0x07),
 356         ILI9881C_COMMAND_INSTR(0x64, 0x07),
 357         ILI9881C_COMMAND_INSTR(0x65, 0x00),
 358         ILI9881C_COMMAND_INSTR(0x66, 0x00),
 359         ILI9881C_COMMAND_INSTR(0x67, 0x02),
 360         ILI9881C_COMMAND_INSTR(0x68, 0x02),
 361         ILI9881C_COMMAND_INSTR(0x69, 0x05),
 362         ILI9881C_COMMAND_INSTR(0x6A, 0x05),
 363         ILI9881C_COMMAND_INSTR(0x6B, 0x02),
 364         ILI9881C_COMMAND_INSTR(0x6C, 0x0D),
 365         ILI9881C_COMMAND_INSTR(0x6D, 0x0D),
 366         ILI9881C_COMMAND_INSTR(0x6E, 0x0C),
 367         ILI9881C_COMMAND_INSTR(0x6F, 0x0C),
 368         ILI9881C_COMMAND_INSTR(0x70, 0x0F),
 369         ILI9881C_COMMAND_INSTR(0x71, 0x0F),
 370         ILI9881C_COMMAND_INSTR(0x72, 0x0E),
 371         ILI9881C_COMMAND_INSTR(0x73, 0x0E),
 372         ILI9881C_COMMAND_INSTR(0x74, 0x02),
 373         ILI9881C_COMMAND_INSTR(0x75, 0x01),
 374         ILI9881C_COMMAND_INSTR(0x76, 0x01),
 375         ILI9881C_COMMAND_INSTR(0x77, 0x06),
 376         ILI9881C_COMMAND_INSTR(0x78, 0x06),
 377         ILI9881C_COMMAND_INSTR(0x79, 0x07),
 378         ILI9881C_COMMAND_INSTR(0x7A, 0x07),
 379         ILI9881C_COMMAND_INSTR(0x7B, 0x00),
 380         ILI9881C_COMMAND_INSTR(0x7C, 0x00),
 381         ILI9881C_COMMAND_INSTR(0x7D, 0x02),
 382         ILI9881C_COMMAND_INSTR(0x7E, 0x02),
 383         ILI9881C_COMMAND_INSTR(0x7F, 0x05),
 384         ILI9881C_COMMAND_INSTR(0x80, 0x05),
 385         ILI9881C_COMMAND_INSTR(0x81, 0x02),
 386         ILI9881C_COMMAND_INSTR(0x82, 0x0D),
 387         ILI9881C_COMMAND_INSTR(0x83, 0x0D),
 388         ILI9881C_COMMAND_INSTR(0x84, 0x0C),
 389         ILI9881C_COMMAND_INSTR(0x85, 0x0C),
 390         ILI9881C_COMMAND_INSTR(0x86, 0x0F),
 391         ILI9881C_COMMAND_INSTR(0x87, 0x0F),
 392         ILI9881C_COMMAND_INSTR(0x88, 0x0E),
 393         ILI9881C_COMMAND_INSTR(0x89, 0x0E),
 394         ILI9881C_COMMAND_INSTR(0x8A, 0x02),
 395         ILI9881C_SWITCH_PAGE_INSTR(4),
 396         ILI9881C_COMMAND_INSTR(0x3B, 0xC0), /* ILI4003D sel */
 397         ILI9881C_COMMAND_INSTR(0x6C, 0x15), /* Set VCORE voltage = 1.5V */
 398         ILI9881C_COMMAND_INSTR(0x6E, 0x2A), /* di_pwr_reg=0 for power mode 2A, VGH clamp 18V */
 399         ILI9881C_COMMAND_INSTR(0x6F, 0x33), /* pumping ratio VGH=5x VGL=-3x */
 400         ILI9881C_COMMAND_INSTR(0x8D, 0x1B), /* VGL clamp -10V */
 401         ILI9881C_COMMAND_INSTR(0x87, 0xBA), /* ESD */
 402         ILI9881C_COMMAND_INSTR(0x3A, 0x24), /* POWER SAVING */
 403         ILI9881C_COMMAND_INSTR(0x26, 0x76),
 404         ILI9881C_COMMAND_INSTR(0xB2, 0xD1),
 405         ILI9881C_SWITCH_PAGE_INSTR(1),
 406         ILI9881C_COMMAND_INSTR(0x22, 0x0A), /* BGR, SS */
 407         ILI9881C_COMMAND_INSTR(0x31, 0x00), /* Zigzag type3 inversion */
 408         ILI9881C_COMMAND_INSTR(0x40, 0x53), /* ILI4003D sel */
 409         ILI9881C_COMMAND_INSTR(0x43, 0x66),
 410         ILI9881C_COMMAND_INSTR(0x53, 0x4C),
 411         ILI9881C_COMMAND_INSTR(0x50, 0x87),
 412         ILI9881C_COMMAND_INSTR(0x51, 0x82),
 413         ILI9881C_COMMAND_INSTR(0x60, 0x15),
 414         ILI9881C_COMMAND_INSTR(0x61, 0x01),
 415         ILI9881C_COMMAND_INSTR(0x62, 0x0C),
 416         ILI9881C_COMMAND_INSTR(0x63, 0x00),
 417         ILI9881C_COMMAND_INSTR(0xA0, 0x00),
 418         ILI9881C_COMMAND_INSTR(0xA1, 0x13), /* VP251 */
 419         ILI9881C_COMMAND_INSTR(0xA2, 0x23), /* VP247 */
 420         ILI9881C_COMMAND_INSTR(0xA3, 0x14), /* VP243 */
 421         ILI9881C_COMMAND_INSTR(0xA4, 0x16), /* VP239 */
 422         ILI9881C_COMMAND_INSTR(0xA5, 0x29), /* VP231 */
 423         ILI9881C_COMMAND_INSTR(0xA6, 0x1E), /* VP219 */
 424         ILI9881C_COMMAND_INSTR(0xA7, 0x1D), /* VP203 */
 425         ILI9881C_COMMAND_INSTR(0xA8, 0x86), /* VP175 */
 426         ILI9881C_COMMAND_INSTR(0xA9, 0x1E), /* VP144 */
 427         ILI9881C_COMMAND_INSTR(0xAA, 0x29), /* VP111 */
 428         ILI9881C_COMMAND_INSTR(0xAB, 0x74), /* VP80 */
 429         ILI9881C_COMMAND_INSTR(0xAC, 0x19), /* VP52 */
 430         ILI9881C_COMMAND_INSTR(0xAD, 0x17), /* VP36 */
 431         ILI9881C_COMMAND_INSTR(0xAE, 0x4B), /* VP24 */
 432         ILI9881C_COMMAND_INSTR(0xAF, 0x20), /* VP16 */
 433         ILI9881C_COMMAND_INSTR(0xB0, 0x26), /* VP12 */
 434         ILI9881C_COMMAND_INSTR(0xB1, 0x4C), /* VP8 */
 435         ILI9881C_COMMAND_INSTR(0xB2, 0x5D), /* VP4 */
 436         ILI9881C_COMMAND_INSTR(0xB3, 0x3F), /* VP0 */
 437         ILI9881C_COMMAND_INSTR(0xC0, 0x00), /* VN255 GAMMA N */
 438         ILI9881C_COMMAND_INSTR(0xC1, 0x13), /* VN251 */
 439         ILI9881C_COMMAND_INSTR(0xC2, 0x23), /* VN247 */
 440         ILI9881C_COMMAND_INSTR(0xC3, 0x14), /* VN243 */
 441         ILI9881C_COMMAND_INSTR(0xC4, 0x16), /* VN239 */
 442         ILI9881C_COMMAND_INSTR(0xC5, 0x29), /* VN231 */
 443         ILI9881C_COMMAND_INSTR(0xC6, 0x1E), /* VN219 */
 444         ILI9881C_COMMAND_INSTR(0xC7, 0x1D), /* VN203 */
 445         ILI9881C_COMMAND_INSTR(0xC8, 0x86), /* VN175 */
 446         ILI9881C_COMMAND_INSTR(0xC9, 0x1E), /* VN144 */
 447         ILI9881C_COMMAND_INSTR(0xCA, 0x29), /* VN111 */
 448         ILI9881C_COMMAND_INSTR(0xCB, 0x74), /* VN80 */
 449         ILI9881C_COMMAND_INSTR(0xCC, 0x19), /* VN52 */
 450         ILI9881C_COMMAND_INSTR(0xCD, 0x17), /* VN36 */
 451         ILI9881C_COMMAND_INSTR(0xCE, 0x4B), /* VN24 */
 452         ILI9881C_COMMAND_INSTR(0xCF, 0x20), /* VN16 */
 453         ILI9881C_COMMAND_INSTR(0xD0, 0x26), /* VN12 */
 454         ILI9881C_COMMAND_INSTR(0xD1, 0x4C), /* VN8 */
 455         ILI9881C_COMMAND_INSTR(0xD2, 0x5D), /* VN4 */
 456         ILI9881C_COMMAND_INSTR(0xD3, 0x3F), /* VN0 */
 457 };
 458
 459 static const struct ili9881c_instr w552946ab_init[] = {
 460         ILI9881C_SWITCH_PAGE_INSTR(3),
 461         ILI9881C_COMMAND_INSTR(0x01, 0x00),
 462         ILI9881C_COMMAND_INSTR(0x02, 0x00),
 463         ILI9881C_COMMAND_INSTR(0x03, 0x53),
 464         ILI9881C_COMMAND_INSTR(0x04, 0x53),
 465         ILI9881C_COMMAND_INSTR(0x05, 0x13),
 466         ILI9881C_COMMAND_INSTR(0x06, 0x04),
 467         ILI9881C_COMMAND_INSTR(0x07, 0x02),
 468         ILI9881C_COMMAND_INSTR(0x08, 0x02),
 469         ILI9881C_COMMAND_INSTR(0x09, 0x00),
 470         ILI9881C_COMMAND_INSTR(0x0A, 0x00),
 471         ILI9881C_COMMAND_INSTR(0x0B, 0x00),
 472         ILI9881C_COMMAND_INSTR(0x0C, 0x00),
 473         ILI9881C_COMMAND_INSTR(0x0D, 0x00),
 474         ILI9881C_COMMAND_INSTR(0x0E, 0x00),
 475         ILI9881C_COMMAND_INSTR(0x0F, 0x00),
 476
 477         ILI9881C_COMMAND_INSTR(0x10, 0x00),
 478         ILI9881C_COMMAND_INSTR(0x11, 0x00),
 479         ILI9881C_COMMAND_INSTR(0x12, 0x00),
 480         ILI9881C_COMMAND_INSTR(0x13, 0x00),
 481         ILI9881C_COMMAND_INSTR(0x14, 0x00),
 482         ILI9881C_COMMAND_INSTR(0x15, 0x08),
 483         ILI9881C_COMMAND_INSTR(0x16, 0x10),
 484         ILI9881C_COMMAND_INSTR(0x17, 0x00),
 485         ILI9881C_COMMAND_INSTR(0x18, 0x08),
 486         ILI9881C_COMMAND_INSTR(0x19, 0x00),
 487         ILI9881C_COMMAND_INSTR(0x1A, 0x00),
 488         ILI9881C_COMMAND_INSTR(0x1B, 0x00),
 489         ILI9881C_COMMAND_INSTR(0x1C, 0x00),
 490         ILI9881C_COMMAND_INSTR(0x1D, 0x00),
 491         ILI9881C_COMMAND_INSTR(0x1E, 0xC0),
 492         ILI9881C_COMMAND_INSTR(0x1F, 0x80),
 493
 494         ILI9881C_COMMAND_INSTR(0x20, 0x02),
 495         ILI9881C_COMMAND_INSTR(0x21, 0x09),
 496         ILI9881C_COMMAND_INSTR(0x22, 0x00),
 497         ILI9881C_COMMAND_INSTR(0x23, 0x00),
 498         ILI9881C_COMMAND_INSTR(0x24, 0x00),
 499         ILI9881C_COMMAND_INSTR(0x25, 0x00),
 500         ILI9881C_COMMAND_INSTR(0x26, 0x00),
 501         ILI9881C_COMMAND_INSTR(0x27, 0x00),
 502         ILI9881C_COMMAND_INSTR(0x28, 0x55),
 503         ILI9881C_COMMAND_INSTR(0x29, 0x03),
 504         ILI9881C_COMMAND_INSTR(0x2A, 0x00),
 505         ILI9881C_COMMAND_INSTR(0x2B, 0x00),
 506         ILI9881C_COMMAND_INSTR(0x2C, 0x00),
 507         ILI9881C_COMMAND_INSTR(0x2D, 0x00),
 508         ILI9881C_COMMAND_INSTR(0x2E, 0x00),
 509         ILI9881C_COMMAND_INSTR(0x2F, 0x00),
 510
 511         ILI9881C_COMMAND_INSTR(0x30, 0x00),
 512         ILI9881C_COMMAND_INSTR(0x31, 0x00),
 513         ILI9881C_COMMAND_INSTR(0x32, 0x00),
 514         ILI9881C_COMMAND_INSTR(0x33, 0x00),
 515         ILI9881C_COMMAND_INSTR(0x34, 0x04),
 516         ILI9881C_COMMAND_INSTR(0x35, 0x05),
 517         ILI9881C_COMMAND_INSTR(0x36, 0x05),
 518         ILI9881C_COMMAND_INSTR(0x37, 0x00),
 519         ILI9881C_COMMAND_INSTR(0x38, 0x3C),
 520         ILI9881C_COMMAND_INSTR(0x39, 0x35),
 521         ILI9881C_COMMAND_INSTR(0x3A, 0x00),
 522         ILI9881C_COMMAND_INSTR(0x3B, 0x40),
 523         ILI9881C_COMMAND_INSTR(0x3C, 0x00),
 524         ILI9881C_COMMAND_INSTR(0x3D, 0x00),
 525         ILI9881C_COMMAND_INSTR(0x3E, 0x00),
 526         ILI9881C_COMMAND_INSTR(0x3F, 0x00),
 527
 528         ILI9881C_COMMAND_INSTR(0x40, 0x00),
 529         ILI9881C_COMMAND_INSTR(0x41, 0x88),
 530         ILI9881C_COMMAND_INSTR(0x42, 0x00),
 531         ILI9881C_COMMAND_INSTR(0x43, 0x00),
 532         ILI9881C_COMMAND_INSTR(0x44, 0x1F),
 533
 534         ILI9881C_COMMAND_INSTR(0x50, 0x01),
 535         ILI9881C_COMMAND_INSTR(0x51, 0x23),
 536         ILI9881C_COMMAND_INSTR(0x52, 0x45),
 537         ILI9881C_COMMAND_INSTR(0x53, 0x67),
 538         ILI9881C_COMMAND_INSTR(0x54, 0x89),
 539         ILI9881C_COMMAND_INSTR(0x55, 0xaB),
 540         ILI9881C_COMMAND_INSTR(0x56, 0x01),
 541         ILI9881C_COMMAND_INSTR(0x57, 0x23),
 542         ILI9881C_COMMAND_INSTR(0x58, 0x45),
 543         ILI9881C_COMMAND_INSTR(0x59, 0x67),
 544         ILI9881C_COMMAND_INSTR(0x5A, 0x89),
 545         ILI9881C_COMMAND_INSTR(0x5B, 0xAB),
 546         ILI9881C_COMMAND_INSTR(0x5C, 0xCD),
 547         ILI9881C_COMMAND_INSTR(0x5D, 0xEF),
 548         ILI9881C_COMMAND_INSTR(0x5E, 0x03),
 549         ILI9881C_COMMAND_INSTR(0x5F, 0x14),
 550
 551         ILI9881C_COMMAND_INSTR(0x60, 0x15),
 552         ILI9881C_COMMAND_INSTR(0x61, 0x0C),
 553         ILI9881C_COMMAND_INSTR(0x62, 0x0D),
 554         ILI9881C_COMMAND_INSTR(0x63, 0x0E),
 555         ILI9881C_COMMAND_INSTR(0x64, 0x0F),
 556         ILI9881C_COMMAND_INSTR(0x65, 0x10),
 557         ILI9881C_COMMAND_INSTR(0x66, 0x11),
 558         ILI9881C_COMMAND_INSTR(0x67, 0x08),
 559         ILI9881C_COMMAND_INSTR(0x68, 0x02),
 560         ILI9881C_COMMAND_INSTR(0x69, 0x0A),
 561         ILI9881C_COMMAND_INSTR(0x6A, 0x02),
 562         ILI9881C_COMMAND_INSTR(0x6B, 0x02),
 563         ILI9881C_COMMAND_INSTR(0x6C, 0x02),
 564         ILI9881C_COMMAND_INSTR(0x6D, 0x02),
 565         ILI9881C_COMMAND_INSTR(0x6E, 0x02),
 566         ILI9881C_COMMAND_INSTR(0x6F, 0x02),
 567
 568         ILI9881C_COMMAND_INSTR(0x70, 0x02),
 569         ILI9881C_COMMAND_INSTR(0x71, 0x02),
 570         ILI9881C_COMMAND_INSTR(0x72, 0x06),
 571         ILI9881C_COMMAND_INSTR(0x73, 0x02),
 572         ILI9881C_COMMAND_INSTR(0x74, 0x02),
 573         ILI9881C_COMMAND_INSTR(0x75, 0x14),
 574         ILI9881C_COMMAND_INSTR(0x76, 0x15),
 575         ILI9881C_COMMAND_INSTR(0x77, 0x0F),
 576         ILI9881C_COMMAND_INSTR(0x78, 0x0E),
 577         ILI9881C_COMMAND_INSTR(0x79, 0x0D),
 578         ILI9881C_COMMAND_INSTR(0x7A, 0x0C),
 579         ILI9881C_COMMAND_INSTR(0x7B, 0x11),
 580         ILI9881C_COMMAND_INSTR(0x7C, 0x10),
 581         ILI9881C_COMMAND_INSTR(0x7D, 0x06),
 582         ILI9881C_COMMAND_INSTR(0x7E, 0x02),
 583         ILI9881C_COMMAND_INSTR(0x7F, 0x0A),
 584
 585         ILI9881C_COMMAND_INSTR(0x80, 0x02),
 586         ILI9881C_COMMAND_INSTR(0x81, 0x02),
 587         ILI9881C_COMMAND_INSTR(0x82, 0x02),
 588         ILI9881C_COMMAND_INSTR(0x83, 0x02),
 589         ILI9881C_COMMAND_INSTR(0x84, 0x02),
 590         ILI9881C_COMMAND_INSTR(0x85, 0x02),
 591         ILI9881C_COMMAND_INSTR(0x86, 0x02),
 592         ILI9881C_COMMAND_INSTR(0x87, 0x02),
 593         ILI9881C_COMMAND_INSTR(0x88, 0x08),
 594         ILI9881C_COMMAND_INSTR(0x89, 0x02),
 595         ILI9881C_COMMAND_INSTR(0x8A, 0x02),
 596
 597         ILI9881C_SWITCH_PAGE_INSTR(4),
 598         ILI9881C_COMMAND_INSTR(0x00, 0x80),
 599         ILI9881C_COMMAND_INSTR(0x70, 0x00),
 600         ILI9881C_COMMAND_INSTR(0x71, 0x00),
 601         ILI9881C_COMMAND_INSTR(0x66, 0xFE),
 602         ILI9881C_COMMAND_INSTR(0x82, 0x15),
 603         ILI9881C_COMMAND_INSTR(0x84, 0x15),
 604         ILI9881C_COMMAND_INSTR(0x85, 0x15),
 605         ILI9881C_COMMAND_INSTR(0x3a, 0x24),
 606         ILI9881C_COMMAND_INSTR(0x32, 0xAC),
 607         ILI9881C_COMMAND_INSTR(0x8C, 0x80),
 608         ILI9881C_COMMAND_INSTR(0x3C, 0xF5),
 609         ILI9881C_COMMAND_INSTR(0x88, 0x33),
 610
 611         ILI9881C_SWITCH_PAGE_INSTR(1),
 612         ILI9881C_COMMAND_INSTR(0x22, 0x0A),
 613         ILI9881C_COMMAND_INSTR(0x31, 0x00),
 614         ILI9881C_COMMAND_INSTR(0x53, 0x78),
 615         ILI9881C_COMMAND_INSTR(0x50, 0x5B),
 616         ILI9881C_COMMAND_INSTR(0x51, 0x5B),
 617         ILI9881C_COMMAND_INSTR(0x60, 0x20),
 618         ILI9881C_COMMAND_INSTR(0x61, 0x00),
 619         ILI9881C_COMMAND_INSTR(0x62, 0x0D),
 620         ILI9881C_COMMAND_INSTR(0x63, 0x00),
 621
 622         ILI9881C_COMMAND_INSTR(0xA0, 0x00),
 623         ILI9881C_COMMAND_INSTR(0xA1, 0x10),
 624         ILI9881C_COMMAND_INSTR(0xA2, 0x1C),
 625         ILI9881C_COMMAND_INSTR(0xA3, 0x13),
 626         ILI9881C_COMMAND_INSTR(0xA4, 0x15),
 627         ILI9881C_COMMAND_INSTR(0xA5, 0x26),
 628         ILI9881C_COMMAND_INSTR(0xA6, 0x1A),
 629         ILI9881C_COMMAND_INSTR(0xA7, 0x1D),
 630         ILI9881C_COMMAND_INSTR(0xA8, 0x67),
 631         ILI9881C_COMMAND_INSTR(0xA9, 0x1C),
 632         ILI9881C_COMMAND_INSTR(0xAA, 0x29),
 633         ILI9881C_COMMAND_INSTR(0xAB, 0x5B),
 634         ILI9881C_COMMAND_INSTR(0xAC, 0x26),
 635         ILI9881C_COMMAND_INSTR(0xAD, 0x28),
 636         ILI9881C_COMMAND_INSTR(0xAE, 0x5C),
 637         ILI9881C_COMMAND_INSTR(0xAF, 0x30),
 638         ILI9881C_COMMAND_INSTR(0xB0, 0x31),
 639         ILI9881C_COMMAND_INSTR(0xB1, 0x2E),
 640         ILI9881C_COMMAND_INSTR(0xB2, 0x32),
 641         ILI9881C_COMMAND_INSTR(0xB3, 0x00),
 642
 643         ILI9881C_COMMAND_INSTR(0xC0, 0x00),
 644         ILI9881C_COMMAND_INSTR(0xC1, 0x10),
 645         ILI9881C_COMMAND_INSTR(0xC2, 0x1C),
 646         ILI9881C_COMMAND_INSTR(0xC3, 0x13),
 647         ILI9881C_COMMAND_INSTR(0xC4, 0x15),
 648         ILI9881C_COMMAND_INSTR(0xC5, 0x26),
 649         ILI9881C_COMMAND_INSTR(0xC6, 0x1A),
 650         ILI9881C_COMMAND_INSTR(0xC7, 0x1D),
 651         ILI9881C_COMMAND_INSTR(0xC8, 0x67),
 652         ILI9881C_COMMAND_INSTR(0xC9, 0x1C),
 653         ILI9881C_COMMAND_INSTR(0xCA, 0x29),
 654         ILI9881C_COMMAND_INSTR(0xCB, 0x5B),
 655         ILI9881C_COMMAND_INSTR(0xCC, 0x26),
 656         ILI9881C_COMMAND_INSTR(0xCD, 0x28),
 657         ILI9881C_COMMAND_INSTR(0xCE, 0x5C),
 658         ILI9881C_COMMAND_INSTR(0xCF, 0x30),
 659         ILI9881C_COMMAND_INSTR(0xD0, 0x31),
 660         ILI9881C_COMMAND_INSTR(0xD1, 0x2E),
 661         ILI9881C_COMMAND_INSTR(0xD2, 0x32),
 662         ILI9881C_COMMAND_INSTR(0xD3, 0x00),
 663         ILI9881C_SWITCH_PAGE_INSTR(0),
 664 };
 665
 666 static inline struct ili9881c *panel_to_ili9881c(struct drm_panel *panel)
 667 {
 668         return container_of(panel, struct ili9881c, panel);
 669 }
 670
 671 /*
 672  * The panel seems to accept some private DCS commands that map
 673  * directly to registers.
 674  *
 675  * It is organised by page, with each page having its own set of
 676  * registers, and the first page looks like it's holding the standard
 677  * DCS commands.
 678  *
 679  * So before any attempt at sending a command or data, we have to be
 680  * sure if we're in the right page or not.
 681  */
 682 static int ili9881c_switch_page(struct ili9881c *ctx, u8 page)
 683 {
 684         u8 buf[4] = { 0xff, 0x98, 0x81, page };
 685         int ret;
 686
 687         ret = mipi_dsi_dcs_write_buffer(ctx->dsi, buf, sizeof(buf));
 688         if (ret < 0)
 689                 return ret;
 690
 691         return 0;
 692 }
 693
 694 static int ili9881c_send_cmd_data(struct ili9881c *ctx, u8 cmd, u8 data)
 695 {
 696         u8 buf[2] = { cmd, data };
 697         int ret;
 698
 699         ret = mipi_dsi_dcs_write_buffer(ctx->dsi, buf, sizeof(buf));
 700         if (ret < 0)
 701                 return ret;
 702
 703         return 0;
 704 }
 705
 706 static int ili9881c_prepare(struct drm_panel *panel)
 707 {
 708         struct ili9881c *ctx = panel_to_ili9881c(panel);
 709         unsigned int i;
 710         int ret;
 711
 712         /* Power the panel */
 713         ret = regulator_enable(ctx->power);
 714         if (ret)
 715                 return ret;
 716         msleep(5);
 717
 718         /* And reset it */
 719         gpiod_set_value(ctx->reset, 1);
 720         msleep(20);
 721
 722         gpiod_set_value(ctx->reset, 0);
 723         msleep(20);
 724
 725         for (i = 0; i < ctx->desc->init_length; i++) {
 726                 const struct ili9881c_instr *instr = &ctx->desc->init[i];
 727
 728                 if (instr->op == ILI9881C_SWITCH_PAGE)
 729                         ret = ili9881c_switch_page(ctx, instr->arg.page);
 730                 else if (instr->op == ILI9881C_COMMAND)
 731                         ret = ili9881c_send_cmd_data(ctx, instr->arg.cmd.cmd,
 732                                                       instr->arg.cmd.data);
 733
 734                 if (ret)
 735                         return ret;
 736         }
 737
 738         ret = ili9881c_switch_page(ctx, 0);
 739         if (ret)
 740                 return ret;
 741
 742         ret = mipi_dsi_dcs_set_tear_on(ctx->dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
 743         if (ret)
 744                 return ret;
 745
 746         ret = mipi_dsi_dcs_exit_sleep_mode(ctx->dsi);
 747         if (ret)
 748                 return ret;
 749
 750         return 0;
 751 }
 752
 753 static int ili9881c_enable(struct drm_panel *panel)
 754 {
 755         struct ili9881c *ctx = panel_to_ili9881c(panel);
 756
 757         msleep(120);
 758
 759         mipi_dsi_dcs_set_display_on(ctx->dsi);
 760
 761         return 0;
 762 }
 763
 764 static int ili9881c_disable(struct drm_panel *panel)
 765 {
 766         struct ili9881c *ctx = panel_to_ili9881c(panel);
 767
 768         return mipi_dsi_dcs_set_display_off(ctx->dsi);
 769 }
 770
 771 static int ili9881c_unprepare(struct drm_panel *panel)
 772 {
 773         struct ili9881c *ctx = panel_to_ili9881c(panel);
 774
 775         mipi_dsi_dcs_enter_sleep_mode(ctx->dsi);
 776         regulator_disable(ctx->power);
 777         gpiod_set_value(ctx->reset, 1);
 778
 779         return 0;
 780 }
 781
 782 static const struct drm_display_mode lhr050h41_default_mode = {
 783         .clock          = 62000,
 784
 785         .hdisplay       = 720,
 786         .hsync_start    = 720 + 10,
 787         .hsync_end      = 720 + 10 + 20,
 788         .htotal         = 720 + 10 + 20 + 30,
 789
 790         .vdisplay       = 1280,
 791         .vsync_start    = 1280 + 10,
 792         .vsync_end      = 1280 + 10 + 10,
 793         .vtotal         = 1280 + 10 + 10 + 20,
 794
 795         .width_mm       = 62,
 796         .height_mm      = 110,
 797 };
 798
 799 static const struct drm_display_mode k101_im2byl02_default_mode = {
 800         .clock          = 69700,
 801
 802         .hdisplay       = 800,
 803         .hsync_start    = 800 + 52,
 804         .hsync_end      = 800 + 52 + 8,
 805         .htotal         = 800 + 52 + 8 + 48,
 806
 807         .vdisplay       = 1280,
 808         .vsync_start    = 1280 + 16,
 809         .vsync_end      = 1280 + 16 + 6,
 810         .vtotal         = 1280 + 16 + 6 + 15,
 811
 812         .width_mm       = 135,
 813         .height_mm      = 217,
 814 };
 815
 816 static const struct drm_display_mode w552946aba_default_mode = {
 817         .clock          = 64000,
 818
 819         .hdisplay       = 720,
 820         .hsync_start    = 720 + 40,
 821         .hsync_end      = 720 + 40 + 10,
 822         .htotal         = 720 + 40 + 10 + 40,
 823
 824         .vdisplay       = 1280,
 825         .vsync_start    = 1280 + 22,
 826         .vsync_end      = 1280 + 22 + 4,
 827         .vtotal         = 1280 + 22 + 4 + 11,
 828
 829         .width_mm       = 68,
 830         .height_mm      = 121,
 831 };
 832
 833 static int ili9881c_get_modes(struct drm_panel *panel,
 834                               struct drm_connector *connector)
 835 {
 836         struct ili9881c *ctx = panel_to_ili9881c(panel);
 837         struct drm_display_mode *mode;
 838
 839         mode = drm_mode_duplicate(connector->dev, ctx->desc->mode);
 840         if (!mode) {
 841                 dev_err(&ctx->dsi->dev, "failed to add mode %ux%ux@%u\n",
 842                         ctx->desc->mode->hdisplay,
 843                         ctx->desc->mode->vdisplay,
 844                         drm_mode_vrefresh(ctx->desc->mode));
 845                 return -ENOMEM;
 846         }
 847
 848         drm_mode_set_name(mode);
 849
 850         mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
 851         drm_mode_probed_add(connector, mode);
 852
 853         connector->display_info.width_mm = mode->width_mm;
 854         connector->display_info.height_mm = mode->height_mm;
 855
 856         drm_connector_set_panel_orientation(connector, ctx->orientation);
 857
 858         return 1;
 859 }
 860
 861 static const struct drm_panel_funcs ili9881c_funcs = {
 862         .prepare        = ili9881c_prepare,
 863         .unprepare      = ili9881c_unprepare,
 864         .enable         = ili9881c_enable,
 865         .disable        = ili9881c_disable,
 866         .get_modes      = ili9881c_get_modes,
 867 };
 868
 869 static int ili9881c_dsi_probe(struct mipi_dsi_device *dsi)
 870 {
 871         struct ili9881c *ctx;
 872         int ret;
 873
 874         ctx = devm_kzalloc(&dsi->dev, sizeof(*ctx), GFP_KERNEL);
 875         if (!ctx)
 876                 return -ENOMEM;
 877         mipi_dsi_set_drvdata(dsi, ctx);
 878         ctx->dsi = dsi;
 879         ctx->desc = of_device_get_match_data(&dsi->dev);
 880
 881         drm_panel_init(&ctx->panel, &dsi->dev, &ili9881c_funcs,
 882                        DRM_MODE_CONNECTOR_DSI);
 883
 884         ctx->power = devm_regulator_get(&dsi->dev, "power");
 885         if (IS_ERR(ctx->power))
 886                 return dev_err_probe(&dsi->dev, PTR_ERR(ctx->power),
 887                                      "Couldn't get our power regulator\n");
 888
 889         ctx->reset = devm_gpiod_get_optional(&dsi->dev, "reset", GPIOD_OUT_LOW);
 890         if (IS_ERR(ctx->reset))
 891                 return dev_err_probe(&dsi->dev, PTR_ERR(ctx->reset),
 892                                      "Couldn't get our reset GPIO\n");
 893
 894         ret = of_drm_get_panel_orientation(dsi->dev.of_node, &ctx->orientation);
 895         if (ret) {
 896                 dev_err(&dsi->dev, "%pOF: failed to get orientation: %d\n",
 897                         dsi->dev.of_node, ret);
 898                 return ret;
 899         }
 900
 901         ret = drm_panel_of_backlight(&ctx->panel);
 902         if (ret)
 903                 return ret;
 904
 905         drm_panel_add(&ctx->panel);
 906
 907         dsi->mode_flags = ctx->desc->mode_flags;
 908         dsi->format = MIPI_DSI_FMT_RGB888;
 909         dsi->lanes = 4;
 910
 911         return mipi_dsi_attach(dsi);
 912 }
 913
 914 static int ili9881c_dsi_remove(struct mipi_dsi_device *dsi)
 915 {
 916         struct ili9881c *ctx = mipi_dsi_get_drvdata(dsi);
 917
 918         mipi_dsi_detach(dsi);
 919         drm_panel_remove(&ctx->panel);
 920
 921         return 0;
 922 }
 923
 924 static const struct ili9881c_desc lhr050h41_desc = {
 925         .init = lhr050h41_init,
 926         .init_length = ARRAY_SIZE(lhr050h41_init),
 927         .mode = &lhr050h41_default_mode,
 928         .mode_flags = MIPI_DSI_MODE_VIDEO_SYNC_PULSE,
 929 };
 930
 931 static const struct ili9881c_desc k101_im2byl02_desc = {
 932         .init = k101_im2byl02_init,
 933         .init_length = ARRAY_SIZE(k101_im2byl02_init),
 934         .mode = &k101_im2byl02_default_mode,
 935         .mode_flags = MIPI_DSI_MODE_VIDEO_SYNC_PULSE,
 936 };
 937
 938 static const struct ili9881c_desc w552946aba_desc = {
 939         .init = w552946ab_init,
 940         .init_length = ARRAY_SIZE(w552946ab_init),
 941         .mode = &w552946aba_default_mode,
 942         .mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
 943                       MIPI_DSI_MODE_LPM | MIPI_DSI_MODE_NO_EOT_PACKET,
 944 };
 945
 946 static const struct of_device_id ili9881c_of_match[] = {
 947         { .compatible = "bananapi,lhr050h41", .data = &lhr050h41_desc },
 948         { .compatible = "feixin,k101-im2byl02", .data = &k101_im2byl02_desc },
 949         { .compatible = "wanchanglong,w552946aba", .data = &w552946aba_desc },
 950         { }
 951 };
 952 MODULE_DEVICE_TABLE(of, ili9881c_of_match);
 953
 954 static struct mipi_dsi_driver ili9881c_dsi_driver = {
 955         .probe          = ili9881c_dsi_probe,
 956         .remove         = ili9881c_dsi_remove,
 957         .driver = {
 958                 .name           = "ili9881c-dsi",
 959                 .of_match_table = ili9881c_of_match,
 960         },
 961 };
 962 module_mipi_dsi_driver(ili9881c_dsi_driver);
 963
 964 MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com>");
 965 MODULE_DESCRIPTION("Ilitek ILI9881C Controller Driver");
 966 MODULE_LICENSE("GPL v2");