drivers/gpu/drm/panel/panel-innolux-p079zca.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Copyright (c) 2017, Fuzhou Rockchip Electronics Co., Ltd
   4  */
   5
   6 #include <linux/delay.h>
   7 #include <linux/gpio/consumer.h>
   8 #include <linux/module.h>
   9 #include <linux/of.h>
  10 #include <linux/of_device.h>
  11 #include <linux/regulator/consumer.h>
  12
  13 #include <video/mipi_display.h>
  14
  15 #include <drm/drm_crtc.h>
  16 #include <drm/drm_device.h>
  17 #include <drm/drm_mipi_dsi.h>
  18 #include <drm/drm_modes.h>
  19 #include <drm/drm_panel.h>
  20
  21 struct panel_init_cmd {
  22         size_t len;
  23         const char *data;
  24 };
  25
  26 #define _INIT_CMD(...) { \
  27         .len = sizeof((char[]){__VA_ARGS__}), \
  28         .data = (char[]){__VA_ARGS__} }
  29
  30 struct panel_desc {
  31         const struct drm_display_mode *mode;
  32         unsigned int bpc;
  33         struct {
  34                 unsigned int width;
  35                 unsigned int height;
  36         } size;
  37
  38         unsigned long flags;
  39         enum mipi_dsi_pixel_format format;
  40         const struct panel_init_cmd *init_cmds;
  41         unsigned int lanes;
  42         const char * const *supply_names;
  43         unsigned int num_supplies;
  44         unsigned int sleep_mode_delay;
  45         unsigned int power_down_delay;
  46 };
  47
  48 struct innolux_panel {
  49         struct drm_panel base;
  50         struct mipi_dsi_device *link;
  51         const struct panel_desc *desc;
  52
  53         struct regulator_bulk_data *supplies;
  54         struct gpio_desc *enable_gpio;
  55
  56         bool prepared;
  57         bool enabled;
  58 };
  59
  60 static inline struct innolux_panel *to_innolux_panel(struct drm_panel *panel)
  61 {
  62         return container_of(panel, struct innolux_panel, base);
  63 }
  64
  65 static int innolux_panel_disable(struct drm_panel *panel)
  66 {
  67         struct innolux_panel *innolux = to_innolux_panel(panel);
  68
  69         if (!innolux->enabled)
  70                 return 0;
  71
  72         innolux->enabled = false;
  73
  74         return 0;
  75 }
  76
  77 static int innolux_panel_unprepare(struct drm_panel *panel)
  78 {
  79         struct innolux_panel *innolux = to_innolux_panel(panel);
  80         int err;
  81
  82         if (!innolux->prepared)
  83                 return 0;
  84
  85         err = mipi_dsi_dcs_set_display_off(innolux->link);
  86         if (err < 0)
  87                 dev_err(panel->dev, "failed to set display off: %d\n", err);
  88
  89         err = mipi_dsi_dcs_enter_sleep_mode(innolux->link);
  90         if (err < 0) {
  91                 dev_err(panel->dev, "failed to enter sleep mode: %d\n", err);
  92                 return err;
  93         }
  94
  95         if (innolux->desc->sleep_mode_delay)
  96                 msleep(innolux->desc->sleep_mode_delay);
  97
  98         gpiod_set_value_cansleep(innolux->enable_gpio, 0);
  99
 100         if (innolux->desc->power_down_delay)
 101                 msleep(innolux->desc->power_down_delay);
 102
 103         err = regulator_bulk_disable(innolux->desc->num_supplies,
 104                                      innolux->supplies);
 105         if (err < 0)
 106                 return err;
 107
 108         innolux->prepared = false;
 109
 110         return 0;
 111 }
 112
 113 static int innolux_panel_prepare(struct drm_panel *panel)
 114 {
 115         struct innolux_panel *innolux = to_innolux_panel(panel);
 116         int err;
 117
 118         if (innolux->prepared)
 119                 return 0;
 120
 121         gpiod_set_value_cansleep(innolux->enable_gpio, 0);
 122
 123         err = regulator_bulk_enable(innolux->desc->num_supplies,
 124                                     innolux->supplies);
 125         if (err < 0)
 126                 return err;
 127
 128         /* p079zca: t2 (20ms), p097pfg: t4 (15ms) */
 129         usleep_range(20000, 21000);
 130
 131         gpiod_set_value_cansleep(innolux->enable_gpio, 1);
 132
 133         /* p079zca: t4, p097pfg: t5 */
 134         usleep_range(20000, 21000);
 135
 136         if (innolux->desc->init_cmds) {
 137                 const struct panel_init_cmd *cmds =
 138                                         innolux->desc->init_cmds;
 139                 unsigned int i;
 140
 141                 for (i = 0; cmds[i].len != 0; i++) {
 142                         const struct panel_init_cmd *cmd = &cmds[i];
 143
 144                         err = mipi_dsi_generic_write(innolux->link, cmd->data,
 145                                                      cmd->len);
 146                         if (err < 0) {
 147                                 dev_err(panel->dev, "failed to write command %u\n", i);
 148                                 goto poweroff;
 149                         }
 150
 151                         /*
 152                          * Included by random guessing, because without this
 153                          * (or at least, some delay), the panel sometimes
 154                          * didn't appear to pick up the command sequence.
 155                          */
 156                         err = mipi_dsi_dcs_nop(innolux->link);
 157                         if (err < 0) {
 158                                 dev_err(panel->dev, "failed to send DCS nop: %d\n", err);
 159                                 goto poweroff;
 160                         }
 161                 }
 162         }
 163
 164         err = mipi_dsi_dcs_exit_sleep_mode(innolux->link);
 165         if (err < 0) {
 166                 dev_err(panel->dev, "failed to exit sleep mode: %d\n", err);
 167                 goto poweroff;
 168         }
 169
 170         /* T6: 120ms - 1000ms*/
 171         msleep(120);
 172
 173         err = mipi_dsi_dcs_set_display_on(innolux->link);
 174         if (err < 0) {
 175                 dev_err(panel->dev, "failed to set display on: %d\n", err);
 176                 goto poweroff;
 177         }
 178
 179         /* T7: 5ms */
 180         usleep_range(5000, 6000);
 181
 182         innolux->prepared = true;
 183
 184         return 0;
 185
 186 poweroff:
 187         gpiod_set_value_cansleep(innolux->enable_gpio, 0);
 188         regulator_bulk_disable(innolux->desc->num_supplies, innolux->supplies);
 189
 190         return err;
 191 }
 192
 193 static int innolux_panel_enable(struct drm_panel *panel)
 194 {
 195         struct innolux_panel *innolux = to_innolux_panel(panel);
 196
 197         if (innolux->enabled)
 198                 return 0;
 199
 200         innolux->enabled = true;
 201
 202         return 0;
 203 }
 204
 205 static const char * const innolux_p079zca_supply_names[] = {
 206         "power",
 207 };
 208
 209 static const struct drm_display_mode innolux_p079zca_mode = {
 210         .clock = 56900,
 211         .hdisplay = 768,
 212         .hsync_start = 768 + 40,
 213         .hsync_end = 768 + 40 + 40,
 214         .htotal = 768 + 40 + 40 + 40,
 215         .vdisplay = 1024,
 216         .vsync_start = 1024 + 20,
 217         .vsync_end = 1024 + 20 + 4,
 218         .vtotal = 1024 + 20 + 4 + 20,
 219 };
 220
 221 static const struct panel_desc innolux_p079zca_panel_desc = {
 222         .mode = &innolux_p079zca_mode,
 223         .bpc = 8,
 224         .size = {
 225                 .width = 120,
 226                 .height = 160,
 227         },
 228         .flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
 229                  MIPI_DSI_MODE_LPM,
 230         .format = MIPI_DSI_FMT_RGB888,
 231         .lanes = 4,
 232         .supply_names = innolux_p079zca_supply_names,
 233         .num_supplies = ARRAY_SIZE(innolux_p079zca_supply_names),
 234         .power_down_delay = 80, /* T8: 80ms - 1000ms */
 235 };
 236
 237 static const char * const innolux_p097pfg_supply_names[] = {
 238         "avdd",
 239         "avee",
 240 };
 241
 242 static const struct drm_display_mode innolux_p097pfg_mode = {
 243         .clock = 229000,
 244         .hdisplay = 1536,
 245         .hsync_start = 1536 + 100,
 246         .hsync_end = 1536 + 100 + 24,
 247         .htotal = 1536 + 100 + 24 + 100,
 248         .vdisplay = 2048,
 249         .vsync_start = 2048 + 100,
 250         .vsync_end = 2048 + 100 + 2,
 251         .vtotal = 2048 + 100 + 2 + 18,
 252 };
 253
 254 /*
 255  * Display manufacturer failed to provide init sequencing according to
 256  * https://chromium-review.googlesource.com/c/chromiumos/third_party/coreboot/+/892065/
 257  * so the init sequence stems from a register dump of a working panel.
 258  */
 259 static const struct panel_init_cmd innolux_p097pfg_init_cmds[] = {
 260         /* page 0 */
 261         _INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x00),
 262         _INIT_CMD(0xB1, 0xE8, 0x11),
 263         _INIT_CMD(0xB2, 0x25, 0x02),
 264         _INIT_CMD(0xB5, 0x08, 0x00),
 265         _INIT_CMD(0xBC, 0x0F, 0x00),
 266         _INIT_CMD(0xB8, 0x03, 0x06, 0x00, 0x00),
 267         _INIT_CMD(0xBD, 0x01, 0x90, 0x14, 0x14),
 268         _INIT_CMD(0x6F, 0x01),
 269         _INIT_CMD(0xC0, 0x03),
 270         _INIT_CMD(0x6F, 0x02),
 271         _INIT_CMD(0xC1, 0x0D),
 272         _INIT_CMD(0xD9, 0x01, 0x09, 0x70),
 273         _INIT_CMD(0xC5, 0x12, 0x21, 0x00),
 274         _INIT_CMD(0xBB, 0x93, 0x93),
 275
 276         /* page 1 */
 277         _INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x01),
 278         _INIT_CMD(0xB3, 0x3C, 0x3C),
 279         _INIT_CMD(0xB4, 0x0F, 0x0F),
 280         _INIT_CMD(0xB9, 0x45, 0x45),
 281         _INIT_CMD(0xBA, 0x14, 0x14),
 282         _INIT_CMD(0xCA, 0x02),
 283         _INIT_CMD(0xCE, 0x04),
 284         _INIT_CMD(0xC3, 0x9B, 0x9B),
 285         _INIT_CMD(0xD8, 0xC0, 0x03),
 286         _INIT_CMD(0xBC, 0x82, 0x01),
 287         _INIT_CMD(0xBD, 0x9E, 0x01),
 288
 289         /* page 2 */
 290         _INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x02),
 291         _INIT_CMD(0xB0, 0x82),
 292         _INIT_CMD(0xD1, 0x00, 0x00, 0x00, 0x3E, 0x00, 0x82, 0x00, 0xA5,
 293                   0x00, 0xC1, 0x00, 0xEA, 0x01, 0x0D, 0x01, 0x40),
 294         _INIT_CMD(0xD2, 0x01, 0x6A, 0x01, 0xA8, 0x01, 0xDC, 0x02, 0x29,
 295                   0x02, 0x67, 0x02, 0x68, 0x02, 0xA8, 0x02, 0xF0),
 296         _INIT_CMD(0xD3, 0x03, 0x19, 0x03, 0x49, 0x03, 0x67, 0x03, 0x8C,
 297                   0x03, 0xA6, 0x03, 0xC7, 0x03, 0xDE, 0x03, 0xEC),
 298         _INIT_CMD(0xD4, 0x03, 0xFF, 0x03, 0xFF),
 299         _INIT_CMD(0xE0, 0x00, 0x00, 0x00, 0x86, 0x00, 0xC5, 0x00, 0xE5,
 300                   0x00, 0xFF, 0x01, 0x26, 0x01, 0x45, 0x01, 0x75),
 301         _INIT_CMD(0xE1, 0x01, 0x9C, 0x01, 0xD5, 0x02, 0x05, 0x02, 0x4D,
 302                   0x02, 0x86, 0x02, 0x87, 0x02, 0xC3, 0x03, 0x03),
 303         _INIT_CMD(0xE2, 0x03, 0x2A, 0x03, 0x56, 0x03, 0x72, 0x03, 0x94,
 304                   0x03, 0xAC, 0x03, 0xCB, 0x03, 0xE0, 0x03, 0xED),
 305         _INIT_CMD(0xE3, 0x03, 0xFF, 0x03, 0xFF),
 306
 307         /* page 3 */
 308         _INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x03),
 309         _INIT_CMD(0xB0, 0x00, 0x00, 0x00, 0x00),
 310         _INIT_CMD(0xB1, 0x00, 0x00, 0x00, 0x00),
 311         _INIT_CMD(0xB2, 0x00, 0x00, 0x06, 0x04, 0x01, 0x40, 0x85),
 312         _INIT_CMD(0xB3, 0x10, 0x07, 0xFC, 0x04, 0x01, 0x40, 0x80),
 313         _INIT_CMD(0xB6, 0xF0, 0x08, 0x00, 0x04, 0x00, 0x00, 0x00, 0x01,
 314                   0x40, 0x80),
 315         _INIT_CMD(0xBA, 0xC5, 0x07, 0x00, 0x04, 0x11, 0x25, 0x8C),
 316         _INIT_CMD(0xBB, 0xC5, 0x07, 0x00, 0x03, 0x11, 0x25, 0x8C),
 317         _INIT_CMD(0xC0, 0x00, 0x3C, 0x00, 0x00, 0x00, 0x80, 0x80),
 318         _INIT_CMD(0xC1, 0x00, 0x3C, 0x00, 0x00, 0x00, 0x80, 0x80),
 319         _INIT_CMD(0xC4, 0x00, 0x00),
 320         _INIT_CMD(0xEF, 0x41),
 321
 322         /* page 4 */
 323         _INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x04),
 324         _INIT_CMD(0xEC, 0x4C),
 325
 326         /* page 5 */
 327         _INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x05),
 328         _INIT_CMD(0xB0, 0x13, 0x03, 0x03, 0x01),
 329         _INIT_CMD(0xB1, 0x30, 0x00),
 330         _INIT_CMD(0xB2, 0x02, 0x02, 0x00),
 331         _INIT_CMD(0xB3, 0x82, 0x23, 0x82, 0x9D),
 332         _INIT_CMD(0xB4, 0xC5, 0x75, 0x24, 0x57),
 333         _INIT_CMD(0xB5, 0x00, 0xD4, 0x72, 0x11, 0x11, 0xAB, 0x0A),
 334         _INIT_CMD(0xB6, 0x00, 0x00, 0xD5, 0x72, 0x24, 0x56),
 335         _INIT_CMD(0xB7, 0x5C, 0xDC, 0x5C, 0x5C),
 336         _INIT_CMD(0xB9, 0x0C, 0x00, 0x00, 0x01, 0x00),
 337         _INIT_CMD(0xC0, 0x75, 0x11, 0x11, 0x54, 0x05),
 338         _INIT_CMD(0xC6, 0x00, 0x00, 0x00, 0x00),
 339         _INIT_CMD(0xD0, 0x00, 0x48, 0x08, 0x00, 0x00),
 340         _INIT_CMD(0xD1, 0x00, 0x48, 0x09, 0x00, 0x00),
 341
 342         /* page 6 */
 343         _INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x06),
 344         _INIT_CMD(0xB0, 0x02, 0x32, 0x32, 0x08, 0x2F),
 345         _INIT_CMD(0xB1, 0x2E, 0x15, 0x14, 0x13, 0x12),
 346         _INIT_CMD(0xB2, 0x11, 0x10, 0x00, 0x3D, 0x3D),
 347         _INIT_CMD(0xB3, 0x3D, 0x3D, 0x3D, 0x3D, 0x3D),
 348         _INIT_CMD(0xB4, 0x3D, 0x32),
 349         _INIT_CMD(0xB5, 0x03, 0x32, 0x32, 0x09, 0x2F),
 350         _INIT_CMD(0xB6, 0x2E, 0x1B, 0x1A, 0x19, 0x18),
 351         _INIT_CMD(0xB7, 0x17, 0x16, 0x01, 0x3D, 0x3D),
 352         _INIT_CMD(0xB8, 0x3D, 0x3D, 0x3D, 0x3D, 0x3D),
 353         _INIT_CMD(0xB9, 0x3D, 0x32),
 354         _INIT_CMD(0xC0, 0x01, 0x32, 0x32, 0x09, 0x2F),
 355         _INIT_CMD(0xC1, 0x2E, 0x1A, 0x1B, 0x16, 0x17),
 356         _INIT_CMD(0xC2, 0x18, 0x19, 0x03, 0x3D, 0x3D),
 357         _INIT_CMD(0xC3, 0x3D, 0x3D, 0x3D, 0x3D, 0x3D),
 358         _INIT_CMD(0xC4, 0x3D, 0x32),
 359         _INIT_CMD(0xC5, 0x00, 0x32, 0x32, 0x08, 0x2F),
 360         _INIT_CMD(0xC6, 0x2E, 0x14, 0x15, 0x10, 0x11),
 361         _INIT_CMD(0xC7, 0x12, 0x13, 0x02, 0x3D, 0x3D),
 362         _INIT_CMD(0xC8, 0x3D, 0x3D, 0x3D, 0x3D, 0x3D),
 363         _INIT_CMD(0xC9, 0x3D, 0x32),
 364
 365         {},
 366 };
 367
 368 static const struct panel_desc innolux_p097pfg_panel_desc = {
 369         .mode = &innolux_p097pfg_mode,
 370         .bpc = 8,
 371         .size = {
 372                 .width = 147,
 373                 .height = 196,
 374         },
 375         .flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
 376                  MIPI_DSI_MODE_LPM,
 377         .format = MIPI_DSI_FMT_RGB888,
 378         .init_cmds = innolux_p097pfg_init_cmds,
 379         .lanes = 4,
 380         .supply_names = innolux_p097pfg_supply_names,
 381         .num_supplies = ARRAY_SIZE(innolux_p097pfg_supply_names),
 382         .sleep_mode_delay = 100, /* T15 */
 383 };
 384
 385 static int innolux_panel_get_modes(struct drm_panel *panel,
 386                                    struct drm_connector *connector)
 387 {
 388         struct innolux_panel *innolux = to_innolux_panel(panel);
 389         const struct drm_display_mode *m = innolux->desc->mode;
 390         struct drm_display_mode *mode;
 391
 392         mode = drm_mode_duplicate(connector->dev, m);
 393         if (!mode) {
 394                 dev_err(panel->dev, "failed to add mode %ux%u@%u\n",
 395                         m->hdisplay, m->vdisplay, drm_mode_vrefresh(m));
 396                 return -ENOMEM;
 397         }
 398
 399         drm_mode_set_name(mode);
 400
 401         drm_mode_probed_add(connector, mode);
 402
 403         connector->display_info.width_mm = innolux->desc->size.width;
 404         connector->display_info.height_mm = innolux->desc->size.height;
 405         connector->display_info.bpc = innolux->desc->bpc;
 406
 407         return 1;
 408 }
 409
 410 static const struct drm_panel_funcs innolux_panel_funcs = {
 411         .disable = innolux_panel_disable,
 412         .unprepare = innolux_panel_unprepare,
 413         .prepare = innolux_panel_prepare,
 414         .enable = innolux_panel_enable,
 415         .get_modes = innolux_panel_get_modes,
 416 };
 417
 418 static const struct of_device_id innolux_of_match[] = {
 419         { .compatible = "innolux,p079zca",
 420           .data = &innolux_p079zca_panel_desc
 421         },
 422         { .compatible = "innolux,p097pfg",
 423           .data = &innolux_p097pfg_panel_desc
 424         },
 425         { }
 426 };
 427 MODULE_DEVICE_TABLE(of, innolux_of_match);
 428
 429 static int innolux_panel_add(struct mipi_dsi_device *dsi,
 430                              const struct panel_desc *desc)
 431 {
 432         struct innolux_panel *innolux;
 433         struct device *dev = &dsi->dev;
 434         int err, i;
 435
 436         innolux = devm_kzalloc(dev, sizeof(*innolux), GFP_KERNEL);
 437         if (!innolux)
 438                 return -ENOMEM;
 439
 440         innolux->desc = desc;
 441
 442         innolux->supplies = devm_kcalloc(dev, desc->num_supplies,
 443                                          sizeof(*innolux->supplies),
 444                                          GFP_KERNEL);
 445         if (!innolux->supplies)
 446                 return -ENOMEM;
 447
 448         for (i = 0; i < desc->num_supplies; i++)
 449                 innolux->supplies[i].supply = desc->supply_names[i];
 450
 451         err = devm_regulator_bulk_get(dev, desc->num_supplies,
 452                                       innolux->supplies);
 453         if (err < 0)
 454                 return err;
 455
 456         innolux->enable_gpio = devm_gpiod_get_optional(dev, "enable",
 457                                                        GPIOD_OUT_HIGH);
 458         if (IS_ERR(innolux->enable_gpio)) {
 459                 err = PTR_ERR(innolux->enable_gpio);
 460                 dev_dbg(dev, "failed to get enable gpio: %d\n", err);
 461                 innolux->enable_gpio = NULL;
 462         }
 463
 464         drm_panel_init(&innolux->base, dev, &innolux_panel_funcs,
 465                        DRM_MODE_CONNECTOR_DSI);
 466
 467         err = drm_panel_of_backlight(&innolux->base);
 468         if (err)
 469                 return err;
 470
 471         drm_panel_add(&innolux->base);
 472
 473         mipi_dsi_set_drvdata(dsi, innolux);
 474         innolux->link = dsi;
 475
 476         return 0;
 477 }
 478
 479 static void innolux_panel_del(struct innolux_panel *innolux)
 480 {
 481         drm_panel_remove(&innolux->base);
 482 }
 483
 484 static int innolux_panel_probe(struct mipi_dsi_device *dsi)
 485 {
 486         const struct panel_desc *desc;
 487         int err;
 488
 489         desc = of_device_get_match_data(&dsi->dev);
 490         dsi->mode_flags = desc->flags;
 491         dsi->format = desc->format;
 492         dsi->lanes = desc->lanes;
 493
 494         err = innolux_panel_add(dsi, desc);
 495         if (err < 0)
 496                 return err;
 497
 498         return mipi_dsi_attach(dsi);
 499 }
 500
 501 static int innolux_panel_remove(struct mipi_dsi_device *dsi)
 502 {
 503         struct innolux_panel *innolux = mipi_dsi_get_drvdata(dsi);
 504         int err;
 505
 506         err = drm_panel_unprepare(&innolux->base);
 507         if (err < 0)
 508                 dev_err(&dsi->dev, "failed to unprepare panel: %d\n", err);
 509
 510         err = drm_panel_disable(&innolux->base);
 511         if (err < 0)
 512                 dev_err(&dsi->dev, "failed to disable panel: %d\n", err);
 513
 514         err = mipi_dsi_detach(dsi);
 515         if (err < 0)
 516                 dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", err);
 517
 518         innolux_panel_del(innolux);
 519
 520         return 0;
 521 }
 522
 523 static void innolux_panel_shutdown(struct mipi_dsi_device *dsi)
 524 {
 525         struct innolux_panel *innolux = mipi_dsi_get_drvdata(dsi);
 526
 527         drm_panel_unprepare(&innolux->base);
 528         drm_panel_disable(&innolux->base);
 529 }
 530
 531 static struct mipi_dsi_driver innolux_panel_driver = {
 532         .driver = {
 533                 .name = "panel-innolux-p079zca",
 534                 .of_match_table = innolux_of_match,
 535         },
 536         .probe = innolux_panel_probe,
 537         .remove = innolux_panel_remove,
 538         .shutdown = innolux_panel_shutdown,
 539 };
 540 module_mipi_dsi_driver(innolux_panel_driver);
 541
 542 MODULE_AUTHOR("Chris Zhong <zyw@rock-chips.com>");
 543 MODULE_AUTHOR("Lin Huang <hl@rock-chips.com>");
 544 MODULE_DESCRIPTION("Innolux P079ZCA panel driver");
 545 MODULE_LICENSE("GPL v2");