drivers/gpu/drm/panel/panel-magnachip-d53e6ea8966.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Magnachip d53e6ea8966 MIPI-DSI panel driver
   4  * Copyright (C) 2023 Chris Morgan
   5  */
   6
   7 #include <drm/drm_mipi_dbi.h>
   8 #include <drm/drm_mipi_dsi.h>
   9 #include <drm/drm_modes.h>
  10 #include <drm/drm_of.h>
  11 #include <drm/drm_panel.h>
  12
  13 #include <linux/backlight.h>
  14 #include <linux/delay.h>
  15 #include <linux/gpio/consumer.h>
  16 #include <linux/init.h>
  17 #include <linux/kernel.h>
  18 #include <linux/media-bus-format.h>
  19 #include <linux/module.h>
  20 #include <linux/of.h>
  21 #include <linux/of_device.h>
  22 #include <linux/regulator/consumer.h>
  23 #include <linux/spi/spi.h>
  24
  25 #include <video/mipi_display.h>
  26
  27 /* Forward declaration for use in backlight function */
  28 struct d53e6ea8966;
  29
  30 /* Panel info, unique to each panel */
  31 struct d53e6ea8966_panel_info {
  32         /** @display_modes: the supported display modes */
  33         const struct drm_display_mode *display_modes;
  34         /** @num_modes: the number of supported display modes */
  35         unsigned int num_modes;
  36         /** @width_mm: panel width in mm */
  37         u16 width_mm;
  38         /** @height_mm: panel height in mm */
  39         u16 height_mm;
  40         /** @bus_flags: drm bus flags for panel */
  41         u32 bus_flags;
  42         /** @panel_init_seq: panel specific init sequence */
  43         void (*panel_init_seq)(struct d53e6ea8966 *db);
  44         /** @backlight_register: panel backlight registration or NULL */
  45         int (*backlight_register)(struct d53e6ea8966 *db);
  46 };
  47
  48 struct d53e6ea8966 {
  49         /** @dev: the container device */
  50         struct device *dev;
  51         /** @dbi: the DBI bus abstraction handle */
  52         struct mipi_dbi dbi;
  53         /** @panel: the DRM panel instance for this device */
  54         struct drm_panel panel;
  55         /** @reset: reset GPIO line */
  56         struct gpio_desc *reset;
  57         /** @enable: enable GPIO line */
  58         struct gpio_desc *enable;
  59         /** @reg_vdd: VDD supply regulator for panel logic */
  60         struct regulator *reg_vdd;
  61         /** @reg_elvdd: ELVDD supply regulator for panel display */
  62         struct regulator *reg_elvdd;
  63         /** @dsi_dev: DSI child device (panel) */
  64         struct mipi_dsi_device *dsi_dev;
  65         /** @bl_dev: pseudo-backlight device for oled panel */
  66         struct backlight_device *bl_dev;
  67         /** @panel_info: struct containing panel timing and info */
  68         const struct d53e6ea8966_panel_info *panel_info;
  69 };
  70
  71 #define NUM_GAMMA_LEVELS        16
  72 #define GAMMA_TABLE_COUNT       23
  73 #define MAX_BRIGHTNESS          (NUM_GAMMA_LEVELS - 1)
  74
  75 #define MCS_ELVSS_ON                    0xb1
  76 #define MCS_TEMP_SWIRE                  0xb2
  77 #define MCS_PASSWORD_0                  0xf0
  78 #define MCS_PASSWORD_1                  0xf1
  79 #define MCS_ANALOG_PWR_CTL_0            0xf4
  80 #define MCS_ANALOG_PWR_CTL_1            0xf5
  81 #define MCS_GTCON_SET                   0xf7
  82 #define MCS_GATELESS_SIGNAL_SET         0xf8
  83 #define MCS_SET_GAMMA                   0xf9
  84
  85 static inline struct d53e6ea8966 *to_d53e6ea8966(struct drm_panel *panel)
  86 {
  87         return container_of(panel, struct d53e6ea8966, panel);
  88 }
  89
  90 /* Table of gamma values provided in datasheet */
  91 static u8 ams495qa01_gamma[NUM_GAMMA_LEVELS][GAMMA_TABLE_COUNT] = {
  92         {0x01, 0x79, 0x78, 0x8d, 0xd9, 0xdf, 0xd5, 0xcb, 0xcf, 0xc5,
  93          0xe5, 0xe0, 0xe4, 0xdc, 0xb8, 0xd4, 0xfa, 0xed, 0xe6, 0x2f,
  94          0x00, 0x2f},
  95         {0x01, 0x7d, 0x7c, 0x92, 0xd7, 0xdd, 0xd2, 0xcb, 0xd0, 0xc6,
  96          0xe5, 0xe1, 0xe3, 0xda, 0xbd, 0xd3, 0xfa, 0xed, 0xe6, 0x2f,
  97          0x00, 0x2f},
  98         {0x01, 0x7f, 0x7e, 0x95, 0xd7, 0xde, 0xd2, 0xcb, 0xcf, 0xc5,
  99          0xe5, 0xe3, 0xe3, 0xda, 0xbf, 0xd3, 0xfa, 0xed, 0xe6, 0x2f,
 100          0x00, 0x2f},
 101         {0x01, 0x82, 0x81, 0x99, 0xd6, 0xdd, 0xd1, 0xca, 0xcf, 0xc3,
 102          0xe4, 0xe3, 0xe3, 0xda, 0xc2, 0xd3, 0xfa, 0xed, 0xe6, 0x2f,
 103          0x00, 0x2f},
 104         {0x01, 0x84, 0x83, 0x9b, 0xd7, 0xde, 0xd2, 0xc8, 0xce, 0xc2,
 105          0xe4, 0xe3, 0xe2, 0xd9, 0xc3, 0xd3, 0xfa, 0xed, 0xe6, 0x2f,
 106          0x00, 0x2f},
 107         {0x01, 0x87, 0x86, 0x9f, 0xd6, 0xdd, 0xd1, 0xc7, 0xce, 0xc1,
 108          0xe4, 0xe3, 0xe2, 0xd9, 0xc6, 0xd3, 0xfa, 0xed, 0xe6, 0x2f,
 109          0x00, 0x2f},
 110         {0x01, 0x89, 0x89, 0xa2, 0xd5, 0xdb, 0xcf, 0xc8, 0xcf, 0xc2,
 111          0xe3, 0xe3, 0xe1, 0xd9, 0xc7, 0xd3, 0xfa, 0xed, 0xe6, 0x2f,
 112          0x00, 0x2f},
 113         {0x01, 0x8b, 0x8b, 0xa5, 0xd5, 0xdb, 0xcf, 0xc7, 0xce, 0xc0,
 114          0xe3, 0xe3, 0xe1, 0xd8, 0xc7, 0xd3, 0xfa, 0xed, 0xe6, 0x2f,
 115          0x00, 0x2f},
 116         {0x01, 0x8d, 0x8d, 0xa7, 0xd5, 0xdb, 0xcf, 0xc6, 0xce, 0xc0,
 117          0xe4, 0xe4, 0xe1, 0xd7, 0xc8, 0xd3, 0xfa, 0xed, 0xe6, 0x2f,
 118          0x00, 0x2f},
 119         {0x01, 0x8f, 0x8f, 0xaa, 0xd4, 0xdb, 0xce, 0xc6, 0xcd, 0xbf,
 120          0xe3, 0xe3, 0xe1, 0xd7, 0xca, 0xd3, 0xfa, 0xed, 0xe6, 0x2f,
 121          0x00, 0x2f},
 122         {0x01, 0x91, 0x91, 0xac, 0xd3, 0xda, 0xce, 0xc5, 0xcd, 0xbe,
 123          0xe3, 0xe3, 0xe0, 0xd7, 0xca, 0xd3, 0xfa, 0xed, 0xe6, 0x2f,
 124          0x00, 0x2f},
 125         {0x01, 0x93, 0x93, 0xaf, 0xd3, 0xda, 0xcd, 0xc5, 0xcd, 0xbe,
 126          0xe2, 0xe3, 0xdf, 0xd6, 0xca, 0xd3, 0xfa, 0xed, 0xe6, 0x2f,
 127          0x00, 0x2f},
 128         {0x01, 0x95, 0x95, 0xb1, 0xd2, 0xd9, 0xcc, 0xc4, 0xcd, 0xbe,
 129          0xe2, 0xe3, 0xdf, 0xd7, 0xcc, 0xd3, 0xfa, 0xed, 0xe6, 0x2f,
 130          0x00, 0x2f},
 131         {0x01, 0x99, 0x99, 0xb6, 0xd1, 0xd9, 0xcc, 0xc3, 0xcb, 0xbc,
 132          0xe2, 0xe4, 0xdf, 0xd6, 0xcc, 0xd3, 0xfa, 0xed, 0xe6, 0x2f,
 133          0x00, 0x2f},
 134         {0x01, 0x9c, 0x9c, 0xba, 0xd0, 0xd8, 0xcb, 0xc3, 0xcb, 0xbb,
 135          0xe2, 0xe4, 0xdf, 0xd6, 0xce, 0xd3, 0xfa, 0xed, 0xe6, 0x2f,
 136          0x00, 0x2f},
 137         {0x01, 0x9f, 0x9f, 0xbe, 0xcf, 0xd7, 0xc9, 0xc2, 0xcb, 0xbb,
 138          0xe1, 0xe3, 0xde, 0xd6, 0xd0, 0xd3, 0xfa, 0xed, 0xe6, 0x2f,
 139          0x00, 0x2f},
 140 };
 141
 142 /*
 143  * Table of elvss values provided in datasheet and corresponds to
 144  * gamma values.
 145  */
 146 static u8 ams495qa01_elvss[NUM_GAMMA_LEVELS] = {
 147         0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x15,
 148         0x15, 0x15, 0x14, 0x14, 0x13, 0x12,
 149 };
 150
 151 static int ams495qa01_update_gamma(struct mipi_dbi *dbi, int brightness)
 152 {
 153         int tmp = brightness;
 154
 155         mipi_dbi_command_buf(dbi, MCS_SET_GAMMA, ams495qa01_gamma[tmp],
 156                              ARRAY_SIZE(ams495qa01_gamma[tmp]));
 157         mipi_dbi_command(dbi, MCS_SET_GAMMA, 0x00);
 158
 159         /* Undocumented command */
 160         mipi_dbi_command(dbi, 0x26, 0x00);
 161
 162         mipi_dbi_command(dbi, MCS_TEMP_SWIRE, ams495qa01_elvss[tmp]);
 163
 164         return 0;
 165 }
 166
 167 static void ams495qa01_panel_init(struct d53e6ea8966 *db)
 168 {
 169         struct mipi_dbi *dbi = &db->dbi;
 170
 171         mipi_dbi_command(dbi, MCS_PASSWORD_0, 0x5a, 0x5a);
 172         mipi_dbi_command(dbi, MCS_PASSWORD_1, 0x5a, 0x5a);
 173
 174         /* Undocumented commands */
 175         mipi_dbi_command(dbi, 0xb0, 0x02);
 176         mipi_dbi_command(dbi, 0xf3, 0x3b);
 177
 178         mipi_dbi_command(dbi, MCS_ANALOG_PWR_CTL_0, 0x33, 0x42, 0x00, 0x08);
 179         mipi_dbi_command(dbi, MCS_ANALOG_PWR_CTL_1, 0x00, 0x06, 0x26, 0x35, 0x03);
 180
 181         /* Undocumented commands */
 182         mipi_dbi_command(dbi, 0xf6, 0x02);
 183         mipi_dbi_command(dbi, 0xc6, 0x0b, 0x00, 0x00, 0x3c, 0x00, 0x22,
 184                          0x00, 0x00, 0x00, 0x00);
 185
 186         mipi_dbi_command(dbi, MCS_GTCON_SET, 0x20);
 187         mipi_dbi_command(dbi, MCS_TEMP_SWIRE, 0x06, 0x06, 0x06, 0x06);
 188         mipi_dbi_command(dbi, MCS_ELVSS_ON, 0x07, 0x00, 0x10);
 189         mipi_dbi_command(dbi, MCS_GATELESS_SIGNAL_SET, 0x7f, 0x7a,
 190                          0x89, 0x67, 0x26, 0x38, 0x00, 0x00, 0x09,
 191                          0x67, 0x70, 0x88, 0x7a, 0x76, 0x05, 0x09,
 192                          0x23, 0x23, 0x23);
 193
 194         /* Undocumented commands */
 195         mipi_dbi_command(dbi, 0xb5, 0xff, 0xef, 0x35, 0x42, 0x0d, 0xd7,
 196                          0xff, 0x07, 0xff, 0xff, 0xfd, 0x00, 0x01,
 197                          0xff, 0x05, 0x12, 0x0f, 0xff, 0xff, 0xff,
 198                          0xff);
 199         mipi_dbi_command(dbi, 0xb4, 0x15);
 200         mipi_dbi_command(dbi, 0xb3, 0x00);
 201
 202         ams495qa01_update_gamma(dbi, MAX_BRIGHTNESS);
 203 }
 204
 205 static int d53e6ea8966_prepare(struct drm_panel *panel)
 206 {
 207         struct d53e6ea8966 *db = to_d53e6ea8966(panel);
 208         int ret;
 209
 210         /* Power up */
 211         ret = regulator_enable(db->reg_vdd);
 212         if (ret) {
 213                 dev_err(db->dev, "failed to enable vdd regulator: %d\n", ret);
 214                 return ret;
 215         }
 216
 217         if (db->reg_elvdd) {
 218                 ret = regulator_enable(db->reg_elvdd);
 219                 if (ret) {
 220                         dev_err(db->dev,
 221                                 "failed to enable elvdd regulator: %d\n", ret);
 222                         regulator_disable(db->reg_vdd);
 223                         return ret;
 224                 }
 225         }
 226
 227         /* Enable */
 228         if (db->enable)
 229                 gpiod_set_value_cansleep(db->enable, 1);
 230
 231         msleep(50);
 232
 233         /* Reset */
 234         gpiod_set_value_cansleep(db->reset, 1);
 235         usleep_range(1000, 5000);
 236         gpiod_set_value_cansleep(db->reset, 0);
 237         msleep(20);
 238
 239         db->panel_info->panel_init_seq(db);
 240
 241         return 0;
 242 }
 243
 244 static int d53e6ea8966_enable(struct drm_panel *panel)
 245 {
 246         struct d53e6ea8966 *db = to_d53e6ea8966(panel);
 247         struct mipi_dbi *dbi = &db->dbi;
 248
 249         mipi_dbi_command(dbi, MIPI_DCS_EXIT_SLEEP_MODE);
 250         msleep(200);
 251         mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_ON);
 252         usleep_range(10000, 15000);
 253
 254         return 0;
 255 }
 256
 257 static int d53e6ea8966_disable(struct drm_panel *panel)
 258 {
 259         struct d53e6ea8966 *db = to_d53e6ea8966(panel);
 260         struct mipi_dbi *dbi = &db->dbi;
 261
 262         mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_OFF);
 263         msleep(20);
 264         mipi_dbi_command(dbi, MIPI_DCS_ENTER_SLEEP_MODE);
 265         msleep(100);
 266
 267         return 0;
 268 }
 269
 270 static int d53e6ea8966_unprepare(struct drm_panel *panel)
 271 {
 272         struct d53e6ea8966 *db = to_d53e6ea8966(panel);
 273
 274         if (db->enable)
 275                 gpiod_set_value_cansleep(db->enable, 0);
 276
 277         gpiod_set_value_cansleep(db->reset, 1);
 278
 279         if (db->reg_elvdd)
 280                 regulator_disable(db->reg_elvdd);
 281
 282         regulator_disable(db->reg_vdd);
 283         msleep(100);
 284
 285         return 0;
 286 }
 287
 288 static int d53e6ea8966_get_modes(struct drm_panel *panel,
 289                                  struct drm_connector *connector)
 290 {
 291         struct d53e6ea8966 *db = to_d53e6ea8966(panel);
 292         const struct d53e6ea8966_panel_info *panel_info = db->panel_info;
 293         struct drm_display_mode *mode;
 294         static const u32 bus_format = MEDIA_BUS_FMT_RGB888_1X24;
 295         unsigned int i;
 296
 297         for (i = 0; i < panel_info->num_modes; i++) {
 298                 mode = drm_mode_duplicate(connector->dev,
 299                                           &panel_info->display_modes[i]);
 300                 if (!mode)
 301                         return -ENOMEM;
 302
 303                 drm_mode_set_name(mode);
 304                 drm_mode_probed_add(connector, mode);
 305         }
 306
 307         connector->display_info.bpc = 8;
 308         connector->display_info.width_mm = panel_info->width_mm;
 309         connector->display_info.height_mm = panel_info->height_mm;
 310         connector->display_info.bus_flags = panel_info->bus_flags;
 311
 312         drm_display_info_set_bus_formats(&connector->display_info,
 313                                          &bus_format, 1);
 314
 315         return 1;
 316 }
 317
 318 static const struct drm_panel_funcs d53e6ea8966_panel_funcs = {
 319         .disable = d53e6ea8966_disable,
 320         .enable = d53e6ea8966_enable,
 321         .get_modes = d53e6ea8966_get_modes,
 322         .prepare = d53e6ea8966_prepare,
 323         .unprepare = d53e6ea8966_unprepare,
 324 };
 325
 326 static int ams495qa01_set_brightness(struct backlight_device *bd)
 327 {
 328         struct d53e6ea8966 *db = bl_get_data(bd);
 329         struct mipi_dbi *dbi = &db->dbi;
 330         int brightness = backlight_get_brightness(bd);
 331
 332         ams495qa01_update_gamma(dbi, brightness);
 333
 334         return 0;
 335 }
 336
 337 static const struct backlight_ops ams495qa01_backlight_ops = {
 338         .update_status  = ams495qa01_set_brightness,
 339 };
 340
 341 static int ams495qa01_backlight_register(struct d53e6ea8966 *db)
 342 {
 343         struct backlight_properties props = {
 344                 .type           = BACKLIGHT_RAW,
 345                 .brightness     = MAX_BRIGHTNESS,
 346                 .max_brightness = MAX_BRIGHTNESS,
 347         };
 348         struct device *dev = db->dev;
 349         int ret = 0;
 350
 351         db->bl_dev = devm_backlight_device_register(dev, "panel", dev, db,
 352                                                     &ams495qa01_backlight_ops,
 353                                                     &props);
 354         if (IS_ERR(db->bl_dev)) {
 355                 ret = PTR_ERR(db->bl_dev);
 356                 dev_err(dev, "error registering backlight device (%d)\n", ret);
 357         }
 358
 359         return ret;
 360 }
 361
 362 static int d53e6ea8966_probe(struct spi_device *spi)
 363 {
 364         struct device *dev = &spi->dev;
 365         struct mipi_dsi_host *dsi_host;
 366         struct d53e6ea8966 *db;
 367         int ret;
 368         struct mipi_dsi_device_info info = {
 369                 .type = "d53e6ea8966",
 370                 .channel = 0,
 371                 .node = NULL,
 372         };
 373
 374         db = devm_kzalloc(dev, sizeof(*db), GFP_KERNEL);
 375         if (!db)
 376                 return -ENOMEM;
 377
 378         spi_set_drvdata(spi, db);
 379
 380         db->dev = dev;
 381
 382         db->panel_info = of_device_get_match_data(dev);
 383         if (!db->panel_info)
 384                 return -EINVAL;
 385
 386         db->reg_vdd = devm_regulator_get(dev, "vdd");
 387         if (IS_ERR(db->reg_vdd))
 388                 return dev_err_probe(dev, PTR_ERR(db->reg_vdd),
 389                                      "Failed to get vdd supply\n");
 390
 391         db->reg_elvdd = devm_regulator_get_optional(dev, "elvdd");
 392         if (IS_ERR(db->reg_elvdd))
 393                 db->reg_elvdd = NULL;
 394
 395         db->reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
 396         if (IS_ERR(db->reset)) {
 397                 ret = PTR_ERR(db->reset);
 398                 return dev_err_probe(dev, ret, "no RESET GPIO\n");
 399         }
 400
 401         db->enable = devm_gpiod_get_optional(dev, "enable", GPIOD_OUT_LOW);
 402         if (IS_ERR(db->enable)) {
 403                 ret = PTR_ERR(db->enable);
 404                 return dev_err_probe(dev, ret, "cannot get ENABLE GPIO\n");
 405         }
 406
 407         ret = mipi_dbi_spi_init(spi, &db->dbi, NULL);
 408         if (ret)
 409                 return dev_err_probe(dev, ret, "MIPI DBI init failed\n");
 410
 411         dsi_host = drm_of_get_dsi_bus(dev);
 412         if (IS_ERR(dsi_host)) {
 413                 ret = PTR_ERR(dsi_host);
 414                 return dev_err_probe(dev, ret, "Error attaching DSI bus\n");
 415         }
 416
 417         db->dsi_dev = devm_mipi_dsi_device_register_full(dev, dsi_host, &info);
 418         if (IS_ERR(db->dsi_dev)) {
 419                 dev_err(dev, "failed to register dsi device: %ld\n",
 420                         PTR_ERR(db->dsi_dev));
 421                 return PTR_ERR(db->dsi_dev);
 422         }
 423
 424         db->dsi_dev->lanes = 2;
 425         db->dsi_dev->format = MIPI_DSI_FMT_RGB888;
 426         db->dsi_dev->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
 427                           MIPI_DSI_MODE_LPM | MIPI_DSI_MODE_NO_EOT_PACKET;
 428
 429         drm_panel_init(&db->panel, dev, &d53e6ea8966_panel_funcs,
 430                        DRM_MODE_CONNECTOR_DSI);
 431
 432         if (db->panel_info->backlight_register) {
 433                 ret = db->panel_info->backlight_register(db);
 434                 if (ret < 0)
 435                         return ret;
 436                 db->panel.backlight = db->bl_dev;
 437         }
 438
 439         drm_panel_add(&db->panel);
 440
 441         ret = devm_mipi_dsi_attach(dev, db->dsi_dev);
 442         if (ret < 0) {
 443                 dev_err(dev, "mipi_dsi_attach failed: %d\n", ret);
 444                 drm_panel_remove(&db->panel);
 445                 return ret;
 446         }
 447
 448         return 0;
 449 }
 450
 451 static void d53e6ea8966_remove(struct spi_device *spi)
 452 {
 453         struct d53e6ea8966 *db = spi_get_drvdata(spi);
 454
 455         drm_panel_remove(&db->panel);
 456 }
 457
 458 static const struct drm_display_mode ams495qa01_modes[] = {
 459         { /* 60hz */
 460                 .clock = 33500,
 461                 .hdisplay = 960,
 462                 .hsync_start = 960 + 10,
 463                 .hsync_end = 960 + 10 + 2,
 464                 .htotal = 960 + 10 + 2 + 10,
 465                 .vdisplay = 544,
 466                 .vsync_start = 544 + 10,
 467                 .vsync_end = 544 + 10 + 2,
 468                 .vtotal = 544 + 10 + 2 + 10,
 469                 .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
 470                 .type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
 471                 },
 472         { /* 50hz */
 473                 .clock = 27800,
 474                 .hdisplay = 960,
 475                 .hsync_start = 960 + 10,
 476                 .hsync_end = 960 + 10 + 2,
 477                 .htotal = 960 + 10 + 2 + 10,
 478                 .vdisplay = 544,
 479                 .vsync_start = 544 + 10,
 480                 .vsync_end = 544 + 10 + 2,
 481                 .vtotal = 544 + 10 + 2 + 10,
 482                 .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
 483                 .type = DRM_MODE_TYPE_DRIVER,
 484         },
 485 };
 486
 487 static const struct d53e6ea8966_panel_info ams495qa01_info = {
 488         .display_modes = ams495qa01_modes,
 489         .num_modes = ARRAY_SIZE(ams495qa01_modes),
 490         .width_mm = 117,
 491         .height_mm = 74,
 492         .bus_flags = DRM_BUS_FLAG_DE_LOW | DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE,
 493         .panel_init_seq = ams495qa01_panel_init,
 494         .backlight_register = ams495qa01_backlight_register,
 495 };
 496
 497 static const struct of_device_id d53e6ea8966_match[] = {
 498         { .compatible = "samsung,ams495qa01", .data = &ams495qa01_info },
 499         { /* sentinel */ },
 500 };
 501 MODULE_DEVICE_TABLE(of, d53e6ea8966_match);
 502
 503 static const struct spi_device_id d53e6ea8966_ids[] = {
 504         { "ams495qa01", 0 },
 505         { /* sentinel */ },
 506 };
 507 MODULE_DEVICE_TABLE(spi, d53e6ea8966_ids);
 508
 509 static struct spi_driver d53e6ea8966_driver = {
 510         .driver         = {
 511                 .name   = "d53e6ea8966-panel",
 512                 .of_match_table = d53e6ea8966_match,
 513         },
 514         .id_table       = d53e6ea8966_ids,
 515         .probe          = d53e6ea8966_probe,
 516         .remove         = d53e6ea8966_remove,
 517 };
 518 module_spi_driver(d53e6ea8966_driver);
 519
 520 MODULE_AUTHOR("Chris Morgan <[email protected]>");
 521 MODULE_DESCRIPTION("Magnachip d53e6ea8966 panel driver");
 522 MODULE_LICENSE("GPL");