drivers/video/omap2/displays/panel-generic-dpi.c

   1 /*
   2  * Generic DPI Panels support
   3  *
   4  * Copyright (C) 2010 Canonical Ltd.
   5  * Author: Bryan Wu <bryan.wu@canonical.com>
   6  *
   7  * LCD panel driver for Sharp LQ043T1DG01
   8  *
   9  * Copyright (C) 2009 Texas Instruments Inc
  10  * Author: Vaibhav Hiremath <hvaibhav@ti.com>
  11  *
  12  * LCD panel driver for Toppoly TDO35S
  13  *
  14  * Copyright (C) 2009 CompuLab, Ltd.
  15  * Author: Mike Rapoport <mike@compulab.co.il>
  16  *
  17  * Copyright (C) 2008 Nokia Corporation
  18  * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
  19  *
  20  * This program is free software; you can redistribute it and/or modify it
  21  * under the terms of the GNU General Public License version 2 as published by
  22  * the Free Software Foundation.
  23  *
  24  * This program is distributed in the hope that it will be useful, but WITHOUT
  25  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  26  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  27  * more details.
  28  *
  29  * You should have received a copy of the GNU General Public License along with
  30  * this program.  If not, see <http://www.gnu.org/licenses/>.
  31  */
  32
  33 #include <linux/module.h>
  34 #include <linux/delay.h>
  35 #include <linux/slab.h>
  36 #include <video/omapdss.h>
  37
  38 #include <video/omap-panel-generic-dpi.h>
  39
  40 struct panel_config {
  41         struct omap_video_timings timings;
  42
  43         int acbi;       /* ac-bias pin transitions per interrupt */
  44         /* Unit: line clocks */
  45         int acb;        /* ac-bias pin frequency */
  46
  47         enum omap_panel_config config;
  48
  49         int power_on_delay;
  50         int power_off_delay;
  51
  52         /*
  53          * Used to match device to panel configuration
  54          * when use generic panel driver
  55          */
  56         const char *name;
  57 };
  58
  59 /* Panel configurations */
  60 static struct panel_config generic_dpi_panels[] = {
  61         /* Sharp LQ043T1DG01 */
  62         {
  63                 {
  64                         .x_res          = 480,
  65                         .y_res          = 272,
  66
  67                         .pixel_clock    = 9000,
  68
  69                         .hsw            = 42,
  70                         .hfp            = 3,
  71                         .hbp            = 2,
  72
  73                         .vsw            = 11,
  74                         .vfp            = 3,
  75                         .vbp            = 2,
  76                 },
  77                 .acbi                   = 0x0,
  78                 .acb                    = 0x0,
  79                 .config                 = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
  80                                         OMAP_DSS_LCD_IHS | OMAP_DSS_LCD_IEO,
  81                 .power_on_delay         = 50,
  82                 .power_off_delay        = 100,
  83                 .name                   = "sharp_lq",
  84         },
  85
  86         /* Sharp LS037V7DW01 */
  87         {
  88                 {
  89                         .x_res          = 480,
  90                         .y_res          = 640,
  91
  92                         .pixel_clock    = 19200,
  93
  94                         .hsw            = 2,
  95                         .hfp            = 1,
  96                         .hbp            = 28,
  97
  98                         .vsw            = 1,
  99                         .vfp            = 1,
 100                         .vbp            = 1,
 101                 },
 102                 .acbi                   = 0x0,
 103                 .acb                    = 0x28,
 104                 .config                 = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
 105                                                 OMAP_DSS_LCD_IHS,
 106                 .power_on_delay         = 50,
 107                 .power_off_delay        = 100,
 108                 .name                   = "sharp_ls",
 109         },
 110
 111         /* Toppoly TDO35S */
 112         {
 113                 {
 114                         .x_res          = 480,
 115                         .y_res          = 640,
 116
 117                         .pixel_clock    = 26000,
 118
 119                         .hfp            = 104,
 120                         .hsw            = 8,
 121                         .hbp            = 8,
 122
 123                         .vfp            = 4,
 124                         .vsw            = 2,
 125                         .vbp            = 2,
 126                 },
 127                 .acbi                   = 0x0,
 128                 .acb                    = 0x0,
 129                 .config                 = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
 130                                         OMAP_DSS_LCD_IHS | OMAP_DSS_LCD_IPC |
 131                                         OMAP_DSS_LCD_ONOFF,
 132                 .power_on_delay         = 0,
 133                 .power_off_delay        = 0,
 134                 .name                   = "toppoly_tdo35s",
 135         },
 136
 137         /* Samsung LTE430WQ-F0C */
 138         {
 139                 {
 140                         .x_res          = 480,
 141                         .y_res          = 272,
 142
 143                         .pixel_clock    = 9200,
 144
 145                         .hfp            = 8,
 146                         .hsw            = 41,
 147                         .hbp            = 45 - 41,
 148
 149                         .vfp            = 4,
 150                         .vsw            = 10,
 151                         .vbp            = 12 - 10,
 152                 },
 153                 .acbi                   = 0x0,
 154                 .acb                    = 0x0,
 155                 .config                 = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
 156                                                 OMAP_DSS_LCD_IHS,
 157                 .power_on_delay         = 0,
 158                 .power_off_delay        = 0,
 159                 .name                   = "samsung_lte430wq_f0c",
 160         },
 161
 162         /* Seiko 70WVW1TZ3Z3 */
 163         {
 164                 {
 165                         .x_res          = 800,
 166                         .y_res          = 480,
 167
 168                         .pixel_clock    = 33000,
 169
 170                         .hsw            = 128,
 171                         .hfp            = 10,
 172                         .hbp            = 10,
 173
 174                         .vsw            = 2,
 175                         .vfp            = 4,
 176                         .vbp            = 11,
 177                 },
 178                 .acbi                   = 0x0,
 179                 .acb                    = 0x0,
 180                 .config                 = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
 181                                                 OMAP_DSS_LCD_IHS,
 182                 .power_on_delay         = 0,
 183                 .power_off_delay        = 0,
 184                 .name                   = "seiko_70wvw1tz3",
 185         },
 186
 187         /* Powertip PH480272T */
 188         {
 189                 {
 190                         .x_res          = 480,
 191                         .y_res          = 272,
 192
 193                         .pixel_clock    = 9000,
 194
 195                         .hsw            = 40,
 196                         .hfp            = 2,
 197                         .hbp            = 2,
 198
 199                         .vsw            = 10,
 200                         .vfp            = 2,
 201                         .vbp            = 2,
 202                 },
 203                 .acbi                   = 0x0,
 204                 .acb                    = 0x0,
 205                 .config                 = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
 206                                           OMAP_DSS_LCD_IHS | OMAP_DSS_LCD_IEO,
 207                 .power_on_delay         = 0,
 208                 .power_off_delay        = 0,
 209                 .name                   = "powertip_ph480272t",
 210         },
 211
 212         /* Innolux AT070TN83 */
 213         {
 214                 {
 215                         .x_res          = 800,
 216                         .y_res          = 480,
 217
 218                         .pixel_clock    = 40000,
 219
 220                         .hsw            = 48,
 221                         .hfp            = 1,
 222                         .hbp            = 1,
 223
 224                         .vsw            = 3,
 225                         .vfp            = 12,
 226                         .vbp            = 25,
 227                 },
 228                 .acbi                   = 0x0,
 229                 .acb                    = 0x28,
 230                 .config                 = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
 231                                           OMAP_DSS_LCD_IHS,
 232                 .power_on_delay         = 0,
 233                 .power_off_delay        = 0,
 234                 .name                   = "innolux_at070tn83",
 235         },
 236
 237         /* NEC NL2432DR22-11B */
 238         {
 239                 {
 240                         .x_res          = 240,
 241                         .y_res          = 320,
 242
 243                         .pixel_clock    = 5400,
 244
 245                         .hsw            = 3,
 246                         .hfp            = 3,
 247                         .hbp            = 39,
 248
 249                         .vsw            = 1,
 250                         .vfp            = 2,
 251                         .vbp            = 7,
 252                 },
 253                 .config                 = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
 254                                                 OMAP_DSS_LCD_IHS,
 255                 .name                   = "nec_nl2432dr22-11b",
 256         },
 257
 258         /* Unknown panel used in OMAP H4 */
 259         {
 260                 {
 261                         .x_res          = 240,
 262                         .y_res          = 320,
 263
 264                         .pixel_clock    = 6250,
 265
 266                         .hsw            = 15,
 267                         .hfp            = 15,
 268                         .hbp            = 60,
 269
 270                         .vsw            = 1,
 271                         .vfp            = 1,
 272                         .vbp            = 1,
 273                 },
 274                 .config                 = OMAP_DSS_LCD_TFT,
 275
 276                 .name                   = "h4",
 277         },
 278
 279         /* Unknown panel used in Samsung OMAP2 Apollon */
 280         {
 281                 {
 282                         .x_res          = 480,
 283                         .y_res          = 272,
 284
 285                         .pixel_clock    = 6250,
 286
 287                         .hsw            = 41,
 288                         .hfp            = 2,
 289                         .hbp            = 2,
 290
 291                         .vsw            = 10,
 292                         .vfp            = 2,
 293                         .vbp            = 2,
 294                 },
 295                 .config                 = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
 296                                                 OMAP_DSS_LCD_IHS,
 297
 298                 .name                   = "apollon",
 299         },
 300 };
 301
 302 struct panel_drv_data {
 303
 304         struct omap_dss_device *dssdev;
 305
 306         struct panel_config *panel_config;
 307 };
 308
 309 static inline struct panel_generic_dpi_data
 310 *get_panel_data(const struct omap_dss_device *dssdev)
 311 {
 312         return (struct panel_generic_dpi_data *) dssdev->data;
 313 }
 314
 315 static int generic_dpi_panel_power_on(struct omap_dss_device *dssdev)
 316 {
 317         int r;
 318         struct panel_generic_dpi_data *panel_data = get_panel_data(dssdev);
 319         struct panel_drv_data *drv_data = dev_get_drvdata(&dssdev->dev);
 320         struct panel_config *panel_config = drv_data->panel_config;
 321
 322         if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
 323                 return 0;
 324
 325         r = omapdss_dpi_display_enable(dssdev);
 326         if (r)
 327                 goto err0;
 328
 329         /* wait couple of vsyncs until enabling the LCD */
 330         if (panel_config->power_on_delay)
 331                 msleep(panel_config->power_on_delay);
 332
 333         if (panel_data->platform_enable) {
 334                 r = panel_data->platform_enable(dssdev);
 335                 if (r)
 336                         goto err1;
 337         }
 338
 339         return 0;
 340 err1:
 341         omapdss_dpi_display_disable(dssdev);
 342 err0:
 343         return r;
 344 }
 345
 346 static void generic_dpi_panel_power_off(struct omap_dss_device *dssdev)
 347 {
 348         struct panel_generic_dpi_data *panel_data = get_panel_data(dssdev);
 349         struct panel_drv_data *drv_data = dev_get_drvdata(&dssdev->dev);
 350         struct panel_config *panel_config = drv_data->panel_config;
 351
 352         if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
 353                 return;
 354
 355         if (panel_data->platform_disable)
 356                 panel_data->platform_disable(dssdev);
 357
 358         /* wait couple of vsyncs after disabling the LCD */
 359         if (panel_config->power_off_delay)
 360                 msleep(panel_config->power_off_delay);
 361
 362         omapdss_dpi_display_disable(dssdev);
 363 }
 364
 365 static int generic_dpi_panel_probe(struct omap_dss_device *dssdev)
 366 {
 367         struct panel_generic_dpi_data *panel_data = get_panel_data(dssdev);
 368         struct panel_config *panel_config = NULL;
 369         struct panel_drv_data *drv_data = NULL;
 370         int i;
 371
 372         dev_dbg(&dssdev->dev, "probe\n");
 373
 374         if (!panel_data || !panel_data->name)
 375                 return -EINVAL;
 376
 377         for (i = 0; i < ARRAY_SIZE(generic_dpi_panels); i++) {
 378                 if (strcmp(panel_data->name, generic_dpi_panels[i].name) == 0) {
 379                         panel_config = &generic_dpi_panels[i];
 380                         break;
 381                 }
 382         }
 383
 384         if (!panel_config)
 385                 return -EINVAL;
 386
 387         dssdev->panel.config = panel_config->config;
 388         dssdev->panel.timings = panel_config->timings;
 389         dssdev->panel.acb = panel_config->acb;
 390         dssdev->panel.acbi = panel_config->acbi;
 391
 392         drv_data = kzalloc(sizeof(*drv_data), GFP_KERNEL);
 393         if (!drv_data)
 394                 return -ENOMEM;
 395
 396         drv_data->dssdev = dssdev;
 397         drv_data->panel_config = panel_config;
 398
 399         dev_set_drvdata(&dssdev->dev, drv_data);
 400
 401         return 0;
 402 }
 403
 404 static void __exit generic_dpi_panel_remove(struct omap_dss_device *dssdev)
 405 {
 406         struct panel_drv_data *drv_data = dev_get_drvdata(&dssdev->dev);
 407
 408         dev_dbg(&dssdev->dev, "remove\n");
 409
 410         kfree(drv_data);
 411
 412         dev_set_drvdata(&dssdev->dev, NULL);
 413 }
 414
 415 static int generic_dpi_panel_enable(struct omap_dss_device *dssdev)
 416 {
 417         int r = 0;
 418
 419         r = generic_dpi_panel_power_on(dssdev);
 420         if (r)
 421                 return r;
 422
 423         dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
 424
 425         return 0;
 426 }
 427
 428 static void generic_dpi_panel_disable(struct omap_dss_device *dssdev)
 429 {
 430         generic_dpi_panel_power_off(dssdev);
 431
 432         dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
 433 }
 434
 435 static int generic_dpi_panel_suspend(struct omap_dss_device *dssdev)
 436 {
 437         generic_dpi_panel_power_off(dssdev);
 438
 439         dssdev->state = OMAP_DSS_DISPLAY_SUSPENDED;
 440
 441         return 0;
 442 }
 443
 444 static int generic_dpi_panel_resume(struct omap_dss_device *dssdev)
 445 {
 446         int r = 0;
 447
 448         r = generic_dpi_panel_power_on(dssdev);
 449         if (r)
 450                 return r;
 451
 452         dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
 453
 454         return 0;
 455 }
 456
 457 static void generic_dpi_panel_set_timings(struct omap_dss_device *dssdev,
 458                 struct omap_video_timings *timings)
 459 {
 460         dpi_set_timings(dssdev, timings);
 461 }
 462
 463 static void generic_dpi_panel_get_timings(struct omap_dss_device *dssdev,
 464                 struct omap_video_timings *timings)
 465 {
 466         *timings = dssdev->panel.timings;
 467 }
 468
 469 static int generic_dpi_panel_check_timings(struct omap_dss_device *dssdev,
 470                 struct omap_video_timings *timings)
 471 {
 472         return dpi_check_timings(dssdev, timings);
 473 }
 474
 475 static struct omap_dss_driver dpi_driver = {
 476         .probe          = generic_dpi_panel_probe,
 477         .remove         = __exit_p(generic_dpi_panel_remove),
 478
 479         .enable         = generic_dpi_panel_enable,
 480         .disable        = generic_dpi_panel_disable,
 481         .suspend        = generic_dpi_panel_suspend,
 482         .resume         = generic_dpi_panel_resume,
 483
 484         .set_timings    = generic_dpi_panel_set_timings,
 485         .get_timings    = generic_dpi_panel_get_timings,
 486         .check_timings  = generic_dpi_panel_check_timings,
 487
 488         .driver         = {
 489                 .name   = "generic_dpi_panel",
 490                 .owner  = THIS_MODULE,
 491         },
 492 };
 493
 494 static int __init generic_dpi_panel_drv_init(void)
 495 {
 496         return omap_dss_register_driver(&dpi_driver);
 497 }
 498
 499 static void __exit generic_dpi_panel_drv_exit(void)
 500 {
 501         omap_dss_unregister_driver(&dpi_driver);
 502 }
 503
 504 module_init(generic_dpi_panel_drv_init);
 505 module_exit(generic_dpi_panel_drv_exit);
 506 MODULE_LICENSE("GPL");