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

   1 /*
   2  * Copyright (c) 2017, Fuzhou Rockchip Electronics Co., Ltd
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  */
   9
  10 #include <linux/backlight.h>
  11 #include <linux/gpio/consumer.h>
  12 #include <linux/module.h>
  13 #include <linux/of.h>
  14 #include <linux/of_device.h>
  15 #include <linux/regulator/consumer.h>
  16
  17 #include <drm/drmP.h>
  18 #include <drm/drm_crtc.h>
  19 #include <drm/drm_mipi_dsi.h>
  20 #include <drm/drm_panel.h>
  21
  22 #include <video/mipi_display.h>
  23
  24 struct panel_init_cmd {
  25         size_t len;
  26         const char *data;
  27 };
  28
  29 #define _INIT_CMD(...) { \
  30         .len = sizeof((char[]){__VA_ARGS__}), \
  31         .data = (char[]){__VA_ARGS__} }
  32
  33 struct panel_desc {
  34         const struct drm_display_mode *mode;
  35         unsigned int bpc;
  36         struct {
  37                 unsigned int width;
  38                 unsigned int height;
  39         } size;
  40
  41         unsigned long flags;
  42         enum mipi_dsi_pixel_format format;
  43         const struct panel_init_cmd *init_cmds;
  44         unsigned int lanes;
  45         const char * const *supply_names;
  46         unsigned int num_supplies;
  47         unsigned int sleep_mode_delay;
  48         unsigned int power_down_delay;
  49 };
  50
  51 struct innolux_panel {
  52         struct drm_panel base;
  53         struct mipi_dsi_device *link;
  54         const struct panel_desc *desc;
  55
  56         struct backlight_device *backlight;
  57         struct regulator_bulk_data *supplies;
  58         unsigned int num_supplies;
  59         struct gpio_desc *enable_gpio;
  60
  61         bool prepared;
  62         bool enabled;
  63 };
  64
  65 static inline struct innolux_panel *to_innolux_panel(struct drm_panel *panel)
  66 {
  67         return container_of(panel, struct innolux_panel, base);
  68 }
  69
  70 static int innolux_panel_disable(struct drm_panel *panel)
  71 {
  72         struct innolux_panel *innolux = to_innolux_panel(panel);
  73         int err;
  74
  75         if (!innolux->enabled)
  76                 return 0;
  77
  78         backlight_disable(innolux->backlight);
  79
  80         err = mipi_dsi_dcs_set_display_off(innolux->link);
  81         if (err < 0)
  82                 DRM_DEV_ERROR(panel->dev, "failed to set display off: %d\n",
  83                               err);
  84
  85         innolux->enabled = false;
  86
  87         return 0;
  88 }
  89
  90 static int innolux_panel_unprepare(struct drm_panel *panel)
  91 {
  92         struct innolux_panel *innolux = to_innolux_panel(panel);
  93         int err;
  94
  95         if (!innolux->prepared)
  96                 return 0;
  97
  98         err = mipi_dsi_dcs_enter_sleep_mode(innolux->link);
  99         if (err < 0) {
 100                 DRM_DEV_ERROR(panel->dev, "failed to enter sleep mode: %d\n",
 101                               err);
 102                 return err;
 103         }
 104
 105         if (innolux->desc->sleep_mode_delay)
 106                 msleep(innolux->desc->sleep_mode_delay);
 107
 108         gpiod_set_value_cansleep(innolux->enable_gpio, 0);
 109
 110         if (innolux->desc->power_down_delay)
 111                 msleep(innolux->desc->power_down_delay);
 112
 113         err = regulator_bulk_disable(innolux->desc->num_supplies,
 114                                      innolux->supplies);
 115         if (err < 0)
 116                 return err;
 117
 118         innolux->prepared = false;
 119
 120         return 0;
 121 }
 122
 123 static int innolux_panel_prepare(struct drm_panel *panel)
 124 {
 125         struct innolux_panel *innolux = to_innolux_panel(panel);
 126         int err;
 127
 128         if (innolux->prepared)
 129                 return 0;
 130
 131         gpiod_set_value_cansleep(innolux->enable_gpio, 0);
 132
 133         err = regulator_bulk_enable(innolux->desc->num_supplies,
 134                                     innolux->supplies);
 135         if (err < 0)
 136                 return err;
 137
 138         /* p079zca: t2 (20ms), p097pfg: t4 (15ms) */
 139         usleep_range(20000, 21000);
 140
 141         gpiod_set_value_cansleep(innolux->enable_gpio, 1);
 142
 143         /* p079zca: t4, p097pfg: t5 */
 144         usleep_range(20000, 21000);
 145
 146         if (innolux->desc->init_cmds) {
 147                 const struct panel_init_cmd *cmds =
 148                                         innolux->desc->init_cmds;
 149                 unsigned int i;
 150
 151                 for (i = 0; cmds[i].len != 0; i++) {
 152                         const struct panel_init_cmd *cmd = &cmds[i];
 153
 154                         err = mipi_dsi_generic_write(innolux->link, cmd->data,
 155                                                      cmd->len);
 156                         if (err < 0) {
 157                                 dev_err(panel->dev,
 158                                         "failed to write command %u\n", i);
 159                                 goto poweroff;
 160                         }
 161
 162                         /*
 163                          * Included by random guessing, because without this
 164                          * (or at least, some delay), the panel sometimes
 165                          * didn't appear to pick up the command sequence.
 166                          */
 167                         err = mipi_dsi_dcs_nop(innolux->link);
 168                         if (err < 0) {
 169                                 dev_err(panel->dev,
 170                                         "failed to send DCS nop: %d\n", err);
 171                                 goto poweroff;
 172                         }
 173                 }
 174         }
 175
 176         err = mipi_dsi_dcs_exit_sleep_mode(innolux->link);
 177         if (err < 0) {
 178                 DRM_DEV_ERROR(panel->dev, "failed to exit sleep mode: %d\n",
 179                               err);
 180                 goto poweroff;
 181         }
 182
 183         /* T6: 120ms - 1000ms*/
 184         msleep(120);
 185
 186         err = mipi_dsi_dcs_set_display_on(innolux->link);
 187         if (err < 0) {
 188                 DRM_DEV_ERROR(panel->dev, "failed to set display on: %d\n",
 189                               err);
 190                 goto poweroff;
 191         }
 192
 193         /* T7: 5ms */
 194         usleep_range(5000, 6000);
 195
 196         innolux->prepared = true;
 197
 198         return 0;
 199
 200 poweroff:
 201         gpiod_set_value_cansleep(innolux->enable_gpio, 0);
 202         regulator_bulk_disable(innolux->desc->num_supplies, innolux->supplies);
 203
 204         return err;
 205 }
 206
 207 static int innolux_panel_enable(struct drm_panel *panel)
 208 {
 209         struct innolux_panel *innolux = to_innolux_panel(panel);
 210         int ret;
 211
 212         if (innolux->enabled)
 213                 return 0;
 214
 215         ret = backlight_enable(innolux->backlight);
 216         if (ret) {
 217                 DRM_DEV_ERROR(panel->drm->dev,
 218                               "Failed to enable backlight %d\n", ret);
 219                 return ret;
 220         }
 221
 222         innolux->enabled = true;
 223
 224         return 0;
 225 }
 226
 227 static const char * const innolux_p079zca_supply_names[] = {
 228         "power",
 229 };
 230
 231 static const struct drm_display_mode innolux_p079zca_mode = {
 232         .clock = 56900,
 233         .hdisplay = 768,
 234         .hsync_start = 768 + 40,
 235         .hsync_end = 768 + 40 + 40,
 236         .htotal = 768 + 40 + 40 + 40,
 237         .vdisplay = 1024,
 238         .vsync_start = 1024 + 20,
 239         .vsync_end = 1024 + 20 + 4,
 240         .vtotal = 1024 + 20 + 4 + 20,
 241         .vrefresh = 60,
 242 };
 243
 244 static const struct panel_desc innolux_p079zca_panel_desc = {
 245         .mode = &innolux_p079zca_mode,
 246         .bpc = 8,
 247         .size = {
 248                 .width = 120,
 249                 .height = 160,
 250         },
 251         .flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
 252                  MIPI_DSI_MODE_LPM,
 253         .format = MIPI_DSI_FMT_RGB888,
 254         .lanes = 4,
 255         .supply_names = innolux_p079zca_supply_names,
 256         .num_supplies = ARRAY_SIZE(innolux_p079zca_supply_names),
 257         .power_down_delay = 80, /* T8: 80ms - 1000ms */
 258 };
 259
 260 static const char * const innolux_p097pfg_supply_names[] = {
 261         "avdd",
 262         "avee",
 263 };
 264
 265 static const struct drm_display_mode innolux_p097pfg_mode = {
 266         .clock = 229000,
 267         .hdisplay = 1536,
 268         .hsync_start = 1536 + 100,
 269         .hsync_end = 1536 + 100 + 24,
 270         .htotal = 1536 + 100 + 24 + 100,
 271         .vdisplay = 2048,
 272         .vsync_start = 2048 + 100,
 273         .vsync_end = 2048 + 100 + 2,
 274         .vtotal = 2048 + 100 + 2 + 18,
 275         .vrefresh = 60,
 276 };
 277
 278 /*
 279  * Display manufacturer failed to provide init sequencing according to
 280  * https://chromium-review.googlesource.com/c/chromiumos/third_party/coreboot/+/892065/
 281  * so the init sequence stems from a register dump of a working panel.
 282  */
 283 static const struct panel_init_cmd innolux_p097pfg_init_cmds[] = {
 284         /* page 0 */
 285         _INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x00),
 286         _INIT_CMD(0xB1, 0xE8, 0x11),
 287         _INIT_CMD(0xB2, 0x25, 0x02),
 288         _INIT_CMD(0xB5, 0x08, 0x00),
 289         _INIT_CMD(0xBC, 0x0F, 0x00),
 290         _INIT_CMD(0xB8, 0x03, 0x06, 0x00, 0x00),
 291         _INIT_CMD(0xBD, 0x01, 0x90, 0x14, 0x14),
 292         _INIT_CMD(0x6F, 0x01),
 293         _INIT_CMD(0xC0, 0x03),
 294         _INIT_CMD(0x6F, 0x02),
 295         _INIT_CMD(0xC1, 0x0D),
 296         _INIT_CMD(0xD9, 0x01, 0x09, 0x70),
 297         _INIT_CMD(0xC5, 0x12, 0x21, 0x00),
 298         _INIT_CMD(0xBB, 0x93, 0x93),
 299
 300         /* page 1 */
 301         _INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x01),
 302         _INIT_CMD(0xB3, 0x3C, 0x3C),
 303         _INIT_CMD(0xB4, 0x0F, 0x0F),
 304         _INIT_CMD(0xB9, 0x45, 0x45),
 305         _INIT_CMD(0xBA, 0x14, 0x14),
 306         _INIT_CMD(0xCA, 0x02),
 307         _INIT_CMD(0xCE, 0x04),
 308         _INIT_CMD(0xC3, 0x9B, 0x9B),
 309         _INIT_CMD(0xD8, 0xC0, 0x03),
 310         _INIT_CMD(0xBC, 0x82, 0x01),
 311         _INIT_CMD(0xBD, 0x9E, 0x01),
 312
 313         /* page 2 */
 314         _INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x02),
 315         _INIT_CMD(0xB0, 0x82),
 316         _INIT_CMD(0xD1, 0x00, 0x00, 0x00, 0x3E, 0x00, 0x82, 0x00, 0xA5,
 317                   0x00, 0xC1, 0x00, 0xEA, 0x01, 0x0D, 0x01, 0x40),
 318         _INIT_CMD(0xD2, 0x01, 0x6A, 0x01, 0xA8, 0x01, 0xDC, 0x02, 0x29,
 319                   0x02, 0x67, 0x02, 0x68, 0x02, 0xA8, 0x02, 0xF0),
 320         _INIT_CMD(0xD3, 0x03, 0x19, 0x03, 0x49, 0x03, 0x67, 0x03, 0x8C,
 321                   0x03, 0xA6, 0x03, 0xC7, 0x03, 0xDE, 0x03, 0xEC),
 322         _INIT_CMD(0xD4, 0x03, 0xFF, 0x03, 0xFF),
 323         _INIT_CMD(0xE0, 0x00, 0x00, 0x00, 0x86, 0x00, 0xC5, 0x00, 0xE5,
 324                   0x00, 0xFF, 0x01, 0x26, 0x01, 0x45, 0x01, 0x75),
 325         _INIT_CMD(0xE1, 0x01, 0x9C, 0x01, 0xD5, 0x02, 0x05, 0x02, 0x4D,
 326                   0x02, 0x86, 0x02, 0x87, 0x02, 0xC3, 0x03, 0x03),
 327         _INIT_CMD(0xE2, 0x03, 0x2A, 0x03, 0x56, 0x03, 0x72, 0x03, 0x94,
 328                   0x03, 0xAC, 0x03, 0xCB, 0x03, 0xE0, 0x03, 0xED),
 329         _INIT_CMD(0xE3, 0x03, 0xFF, 0x03, 0xFF),
 330
 331         /* page 3 */
 332         _INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x03),
 333         _INIT_CMD(0xB0, 0x00, 0x00, 0x00, 0x00),
 334         _INIT_CMD(0xB1, 0x00, 0x00, 0x00, 0x00),
 335         _INIT_CMD(0xB2, 0x00, 0x00, 0x06, 0x04, 0x01, 0x40, 0x85),
 336         _INIT_CMD(0xB3, 0x10, 0x07, 0xFC, 0x04, 0x01, 0x40, 0x80),
 337         _INIT_CMD(0xB6, 0xF0, 0x08, 0x00, 0x04, 0x00, 0x00, 0x00, 0x01,
 338                   0x40, 0x80),
 339         _INIT_CMD(0xBA, 0xC5, 0x07, 0x00, 0x04, 0x11, 0x25, 0x8C),
 340         _INIT_CMD(0xBB, 0xC5, 0x07, 0x00, 0x03, 0x11, 0x25, 0x8C),
 341         _INIT_CMD(0xC0, 0x00, 0x3C, 0x00, 0x00, 0x00, 0x80, 0x80),
 342         _INIT_CMD(0xC1, 0x00, 0x3C, 0x00, 0x00, 0x00, 0x80, 0x80),
 343         _INIT_CMD(0xC4, 0x00, 0x00),
 344         _INIT_CMD(0xEF, 0x41),
 345
 346         /* page 4 */
 347         _INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x04),
 348         _INIT_CMD(0xEC, 0x4C),
 349
 350         /* page 5 */
 351         _INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x05),
 352         _INIT_CMD(0xB0, 0x13, 0x03, 0x03, 0x01),
 353         _INIT_CMD(0xB1, 0x30, 0x00),
 354         _INIT_CMD(0xB2, 0x02, 0x02, 0x00),
 355         _INIT_CMD(0xB3, 0x82, 0x23, 0x82, 0x9D),
 356         _INIT_CMD(0xB4, 0xC5, 0x75, 0x24, 0x57),
 357         _INIT_CMD(0xB5, 0x00, 0xD4, 0x72, 0x11, 0x11, 0xAB, 0x0A),
 358         _INIT_CMD(0xB6, 0x00, 0x00, 0xD5, 0x72, 0x24, 0x56),
 359         _INIT_CMD(0xB7, 0x5C, 0xDC, 0x5C, 0x5C),
 360         _INIT_CMD(0xB9, 0x0C, 0x00, 0x00, 0x01, 0x00),
 361         _INIT_CMD(0xC0, 0x75, 0x11, 0x11, 0x54, 0x05),
 362         _INIT_CMD(0xC6, 0x00, 0x00, 0x00, 0x00),
 363         _INIT_CMD(0xD0, 0x00, 0x48, 0x08, 0x00, 0x00),
 364         _INIT_CMD(0xD1, 0x00, 0x48, 0x09, 0x00, 0x00),
 365
 366         /* page 6 */
 367         _INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x06),
 368         _INIT_CMD(0xB0, 0x02, 0x32, 0x32, 0x08, 0x2F),
 369         _INIT_CMD(0xB1, 0x2E, 0x15, 0x14, 0x13, 0x12),
 370         _INIT_CMD(0xB2, 0x11, 0x10, 0x00, 0x3D, 0x3D),
 371         _INIT_CMD(0xB3, 0x3D, 0x3D, 0x3D, 0x3D, 0x3D),
 372         _INIT_CMD(0xB4, 0x3D, 0x32),
 373         _INIT_CMD(0xB5, 0x03, 0x32, 0x32, 0x09, 0x2F),
 374         _INIT_CMD(0xB6, 0x2E, 0x1B, 0x1A, 0x19, 0x18),
 375         _INIT_CMD(0xB7, 0x17, 0x16, 0x01, 0x3D, 0x3D),
 376         _INIT_CMD(0xB8, 0x3D, 0x3D, 0x3D, 0x3D, 0x3D),
 377         _INIT_CMD(0xB9, 0x3D, 0x32),
 378         _INIT_CMD(0xC0, 0x01, 0x32, 0x32, 0x09, 0x2F),
 379         _INIT_CMD(0xC1, 0x2E, 0x1A, 0x1B, 0x16, 0x17),
 380         _INIT_CMD(0xC2, 0x18, 0x19, 0x03, 0x3D, 0x3D),
 381         _INIT_CMD(0xC3, 0x3D, 0x3D, 0x3D, 0x3D, 0x3D),
 382         _INIT_CMD(0xC4, 0x3D, 0x32),
 383         _INIT_CMD(0xC5, 0x00, 0x32, 0x32, 0x08, 0x2F),
 384         _INIT_CMD(0xC6, 0x2E, 0x14, 0x15, 0x10, 0x11),
 385         _INIT_CMD(0xC7, 0x12, 0x13, 0x02, 0x3D, 0x3D),
 386         _INIT_CMD(0xC8, 0x3D, 0x3D, 0x3D, 0x3D, 0x3D),
 387         _INIT_CMD(0xC9, 0x3D, 0x32),
 388
 389         {},
 390 };
 391
 392 static const struct panel_desc innolux_p097pfg_panel_desc = {
 393         .mode = &innolux_p097pfg_mode,
 394         .bpc = 8,
 395         .size = {
 396                 .width = 147,
 397                 .height = 196,
 398         },
 399         .flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
 400                  MIPI_DSI_MODE_LPM,
 401         .format = MIPI_DSI_FMT_RGB888,
 402         .init_cmds = innolux_p097pfg_init_cmds,
 403         .lanes = 4,
 404         .supply_names = innolux_p097pfg_supply_names,
 405         .num_supplies = ARRAY_SIZE(innolux_p097pfg_supply_names),
 406         .sleep_mode_delay = 100, /* T15 */
 407 };
 408
 409 static int innolux_panel_get_modes(struct drm_panel *panel)
 410 {
 411         struct innolux_panel *innolux = to_innolux_panel(panel);
 412         const struct drm_display_mode *m = innolux->desc->mode;
 413         struct drm_display_mode *mode;
 414
 415         mode = drm_mode_duplicate(panel->drm, m);
 416         if (!mode) {
 417                 DRM_DEV_ERROR(panel->drm->dev, "failed to add mode %ux%ux@%u\n",
 418                               m->hdisplay, m->vdisplay, m->vrefresh);
 419                 return -ENOMEM;
 420         }
 421
 422         drm_mode_set_name(mode);
 423
 424         drm_mode_probed_add(panel->connector, mode);
 425
 426         panel->connector->display_info.width_mm =
 427                         innolux->desc->size.width;
 428         panel->connector->display_info.height_mm =
 429                         innolux->desc->size.height;
 430         panel->connector->display_info.bpc = innolux->desc->bpc;
 431
 432         return 1;
 433 }
 434
 435 static const struct drm_panel_funcs innolux_panel_funcs = {
 436         .disable = innolux_panel_disable,
 437         .unprepare = innolux_panel_unprepare,
 438         .prepare = innolux_panel_prepare,
 439         .enable = innolux_panel_enable,
 440         .get_modes = innolux_panel_get_modes,
 441 };
 442
 443 static const struct of_device_id innolux_of_match[] = {
 444         { .compatible = "innolux,p079zca",
 445           .data = &innolux_p079zca_panel_desc
 446         },
 447         { .compatible = "innolux,p097pfg",
 448           .data = &innolux_p097pfg_panel_desc
 449         },
 450         { }
 451 };
 452 MODULE_DEVICE_TABLE(of, innolux_of_match);
 453
 454 static int innolux_panel_add(struct mipi_dsi_device *dsi,
 455                              const struct panel_desc *desc)
 456 {
 457         struct innolux_panel *innolux;
 458         struct device *dev = &dsi->dev;
 459         int err, i;
 460
 461         innolux = devm_kzalloc(dev, sizeof(*innolux), GFP_KERNEL);
 462         if (!innolux)
 463                 return -ENOMEM;
 464
 465         innolux->desc = desc;
 466
 467         innolux->supplies = devm_kcalloc(dev, desc->num_supplies,
 468                                          sizeof(*innolux->supplies),
 469                                          GFP_KERNEL);
 470         if (!innolux->supplies)
 471                 return -ENOMEM;
 472
 473         for (i = 0; i < desc->num_supplies; i++)
 474                 innolux->supplies[i].supply = desc->supply_names[i];
 475
 476         err = devm_regulator_bulk_get(dev, desc->num_supplies,
 477                                       innolux->supplies);
 478         if (err < 0)
 479                 return err;
 480
 481         innolux->enable_gpio = devm_gpiod_get_optional(dev, "enable",
 482                                                        GPIOD_OUT_HIGH);
 483         if (IS_ERR(innolux->enable_gpio)) {
 484                 err = PTR_ERR(innolux->enable_gpio);
 485                 dev_dbg(dev, "failed to get enable gpio: %d\n", err);
 486                 innolux->enable_gpio = NULL;
 487         }
 488
 489         innolux->backlight = devm_of_find_backlight(dev);
 490         if (IS_ERR(innolux->backlight))
 491                 return PTR_ERR(innolux->backlight);
 492
 493         drm_panel_init(&innolux->base);
 494         innolux->base.funcs = &innolux_panel_funcs;
 495         innolux->base.dev = dev;
 496
 497         err = drm_panel_add(&innolux->base);
 498         if (err < 0)
 499                 return err;
 500
 501         mipi_dsi_set_drvdata(dsi, innolux);
 502         innolux->link = dsi;
 503
 504         return 0;
 505 }
 506
 507 static void innolux_panel_del(struct innolux_panel *innolux)
 508 {
 509         if (innolux->base.dev)
 510                 drm_panel_remove(&innolux->base);
 511 }
 512
 513 static int innolux_panel_probe(struct mipi_dsi_device *dsi)
 514 {
 515         const struct panel_desc *desc;
 516         int err;
 517
 518         desc = of_device_get_match_data(&dsi->dev);
 519         dsi->mode_flags = desc->flags;
 520         dsi->format = desc->format;
 521         dsi->lanes = desc->lanes;
 522
 523         err = innolux_panel_add(dsi, desc);
 524         if (err < 0)
 525                 return err;
 526
 527         return mipi_dsi_attach(dsi);
 528 }
 529
 530 static int innolux_panel_remove(struct mipi_dsi_device *dsi)
 531 {
 532         struct innolux_panel *innolux = mipi_dsi_get_drvdata(dsi);
 533         int err;
 534
 535         err = innolux_panel_unprepare(&innolux->base);
 536         if (err < 0)
 537                 DRM_DEV_ERROR(&dsi->dev, "failed to unprepare panel: %d\n",
 538                               err);
 539
 540         err = innolux_panel_disable(&innolux->base);
 541         if (err < 0)
 542                 DRM_DEV_ERROR(&dsi->dev, "failed to disable panel: %d\n", err);
 543
 544         err = mipi_dsi_detach(dsi);
 545         if (err < 0)
 546                 DRM_DEV_ERROR(&dsi->dev, "failed to detach from DSI host: %d\n",
 547                               err);
 548
 549         innolux_panel_del(innolux);
 550
 551         return 0;
 552 }
 553
 554 static void innolux_panel_shutdown(struct mipi_dsi_device *dsi)
 555 {
 556         struct innolux_panel *innolux = mipi_dsi_get_drvdata(dsi);
 557
 558         innolux_panel_unprepare(&innolux->base);
 559         innolux_panel_disable(&innolux->base);
 560 }
 561
 562 static struct mipi_dsi_driver innolux_panel_driver = {
 563         .driver = {
 564                 .name = "panel-innolux-p079zca",
 565                 .of_match_table = innolux_of_match,
 566         },
 567         .probe = innolux_panel_probe,
 568         .remove = innolux_panel_remove,
 569         .shutdown = innolux_panel_shutdown,
 570 };
 571 module_mipi_dsi_driver(innolux_panel_driver);
 572
 573 MODULE_AUTHOR("Chris Zhong <zyw@rock-chips.com>");
 574 MODULE_AUTHOR("Lin Huang <hl@rock-chips.com>");
 575 MODULE_DESCRIPTION("Innolux P079ZCA panel driver");
 576 MODULE_LICENSE("GPL v2");