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         /* Generic Panel */
  62         {
  63                 {
  64                         .x_res          = 640,
  65                         .y_res          = 480,
  66
  67                         .pixel_clock    = 23500,
  68
  69                         .hfp            = 48,
  70                         .hsw            = 32,
  71                         .hbp            = 80,
  72
  73                         .vfp            = 3,
  74                         .vsw            = 4,
  75                         .vbp            = 7,
  76                 },
  77                 .acbi                   = 0x0,
  78                 .acb                    = 0x0,
  79                 .config                 = OMAP_DSS_LCD_TFT,
  80                 .power_on_delay         = 0,
  81                 .power_off_delay        = 0,
  82                 .name                   = "generic",
  83         },
  84
  85         /* Sharp LQ043T1DG01 */
  86         {
  87                 {
  88                         .x_res          = 480,
  89                         .y_res          = 272,
  90
  91                         .pixel_clock    = 9000,
  92
  93                         .hsw            = 42,
  94                         .hfp            = 3,
  95                         .hbp            = 2,
  96
  97                         .vsw            = 11,
  98                         .vfp            = 3,
  99                         .vbp            = 2,
 100                 },
 101                 .acbi                   = 0x0,
 102                 .acb                    = 0x0,
 103                 .config                 = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
 104                                         OMAP_DSS_LCD_IHS | OMAP_DSS_LCD_IEO,
 105                 .power_on_delay         = 50,
 106                 .power_off_delay        = 100,
 107                 .name                   = "sharp_lq",
 108         },
 109
 110         /* Sharp LS037V7DW01 */
 111         {
 112                 {
 113                         .x_res          = 480,
 114                         .y_res          = 640,
 115
 116                         .pixel_clock    = 19200,
 117
 118                         .hsw            = 2,
 119                         .hfp            = 1,
 120                         .hbp            = 28,
 121
 122                         .vsw            = 1,
 123                         .vfp            = 1,
 124                         .vbp            = 1,
 125                 },
 126                 .acbi                   = 0x0,
 127                 .acb                    = 0x28,
 128                 .config                 = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
 129                                                 OMAP_DSS_LCD_IHS,
 130                 .power_on_delay         = 50,
 131                 .power_off_delay        = 100,
 132                 .name                   = "sharp_ls",
 133         },
 134
 135         /* Toppoly TDO35S */
 136         {
 137                 {
 138                         .x_res          = 480,
 139                         .y_res          = 640,
 140
 141                         .pixel_clock    = 26000,
 142
 143                         .hfp            = 104,
 144                         .hsw            = 8,
 145                         .hbp            = 8,
 146
 147                         .vfp            = 4,
 148                         .vsw            = 2,
 149                         .vbp            = 2,
 150                 },
 151                 .acbi                   = 0x0,
 152                 .acb                    = 0x0,
 153                 .config                 = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
 154                                         OMAP_DSS_LCD_IHS | OMAP_DSS_LCD_IPC |
 155                                         OMAP_DSS_LCD_ONOFF,
 156                 .power_on_delay         = 0,
 157                 .power_off_delay        = 0,
 158                 .name                   = "toppoly_tdo35s",
 159         },
 160
 161         /* Samsung LTE430WQ-F0C */
 162         {
 163                 {
 164                         .x_res          = 480,
 165                         .y_res          = 272,
 166
 167                         .pixel_clock    = 9200,
 168
 169                         .hfp            = 8,
 170                         .hsw            = 41,
 171                         .hbp            = 45 - 41,
 172
 173                         .vfp            = 4,
 174                         .vsw            = 10,
 175                         .vbp            = 12 - 10,
 176                 },
 177                 .acbi                   = 0x0,
 178                 .acb                    = 0x0,
 179                 .config                 = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
 180                                                 OMAP_DSS_LCD_IHS,
 181                 .power_on_delay         = 0,
 182                 .power_off_delay        = 0,
 183                 .name                   = "samsung_lte430wq_f0c",
 184         },
 185
 186         /* Seiko 70WVW1TZ3Z3 */
 187         {
 188                 {
 189                         .x_res          = 800,
 190                         .y_res          = 480,
 191
 192                         .pixel_clock    = 33000,
 193
 194                         .hsw            = 128,
 195                         .hfp            = 10,
 196                         .hbp            = 10,
 197
 198                         .vsw            = 2,
 199                         .vfp            = 4,
 200                         .vbp            = 11,
 201                 },
 202                 .acbi                   = 0x0,
 203                 .acb                    = 0x0,
 204                 .config                 = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
 205                                                 OMAP_DSS_LCD_IHS,
 206                 .power_on_delay         = 0,
 207                 .power_off_delay        = 0,
 208                 .name                   = "seiko_70wvw1tz3",
 209         },
 210 };
 211
 212 struct panel_drv_data {
 213
 214         struct omap_dss_device *dssdev;
 215
 216         struct panel_config *panel_config;
 217 };
 218
 219 static inline struct panel_generic_dpi_data
 220 *get_panel_data(const struct omap_dss_device *dssdev)
 221 {
 222         return (struct panel_generic_dpi_data *) dssdev->data;
 223 }
 224
 225 static int generic_dpi_panel_power_on(struct omap_dss_device *dssdev)
 226 {
 227         int r;
 228         struct panel_generic_dpi_data *panel_data = get_panel_data(dssdev);
 229         struct panel_drv_data *drv_data = dev_get_drvdata(&dssdev->dev);
 230         struct panel_config *panel_config = drv_data->panel_config;
 231
 232         if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
 233                 return 0;
 234
 235         r = omapdss_dpi_display_enable(dssdev);
 236         if (r)
 237                 goto err0;
 238
 239         /* wait couple of vsyncs until enabling the LCD */
 240         if (panel_config->power_on_delay)
 241                 msleep(panel_config->power_on_delay);
 242
 243         if (panel_data->platform_enable) {
 244                 r = panel_data->platform_enable(dssdev);
 245                 if (r)
 246                         goto err1;
 247         }
 248
 249         return 0;
 250 err1:
 251         omapdss_dpi_display_disable(dssdev);
 252 err0:
 253         return r;
 254 }
 255
 256 static void generic_dpi_panel_power_off(struct omap_dss_device *dssdev)
 257 {
 258         struct panel_generic_dpi_data *panel_data = get_panel_data(dssdev);
 259         struct panel_drv_data *drv_data = dev_get_drvdata(&dssdev->dev);
 260         struct panel_config *panel_config = drv_data->panel_config;
 261
 262         if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
 263                 return;
 264
 265         if (panel_data->platform_disable)
 266                 panel_data->platform_disable(dssdev);
 267
 268         /* wait couple of vsyncs after disabling the LCD */
 269         if (panel_config->power_off_delay)
 270                 msleep(panel_config->power_off_delay);
 271
 272         omapdss_dpi_display_disable(dssdev);
 273 }
 274
 275 static int generic_dpi_panel_probe(struct omap_dss_device *dssdev)
 276 {
 277         struct panel_generic_dpi_data *panel_data = get_panel_data(dssdev);
 278         struct panel_config *panel_config = NULL;
 279         struct panel_drv_data *drv_data = NULL;
 280         int i;
 281
 282         dev_dbg(&dssdev->dev, "probe\n");
 283
 284         if (!panel_data || !panel_data->name)
 285                 return -EINVAL;
 286
 287         for (i = 0; i < ARRAY_SIZE(generic_dpi_panels); i++) {
 288                 if (strcmp(panel_data->name, generic_dpi_panels[i].name) == 0) {
 289                         panel_config = &generic_dpi_panels[i];
 290                         break;
 291                 }
 292         }
 293
 294         if (!panel_config)
 295                 return -EINVAL;
 296
 297         dssdev->panel.config = panel_config->config;
 298         dssdev->panel.timings = panel_config->timings;
 299         dssdev->panel.acb = panel_config->acb;
 300         dssdev->panel.acbi = panel_config->acbi;
 301
 302         drv_data = kzalloc(sizeof(*drv_data), GFP_KERNEL);
 303         if (!drv_data)
 304                 return -ENOMEM;
 305
 306         drv_data->dssdev = dssdev;
 307         drv_data->panel_config = panel_config;
 308
 309         dev_set_drvdata(&dssdev->dev, drv_data);
 310
 311         return 0;
 312 }
 313
 314 static void __exit generic_dpi_panel_remove(struct omap_dss_device *dssdev)
 315 {
 316         struct panel_drv_data *drv_data = dev_get_drvdata(&dssdev->dev);
 317
 318         dev_dbg(&dssdev->dev, "remove\n");
 319
 320         kfree(drv_data);
 321
 322         dev_set_drvdata(&dssdev->dev, NULL);
 323 }
 324
 325 static int generic_dpi_panel_enable(struct omap_dss_device *dssdev)
 326 {
 327         int r = 0;
 328
 329         r = generic_dpi_panel_power_on(dssdev);
 330         if (r)
 331                 return r;
 332
 333         dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
 334
 335         return 0;
 336 }
 337
 338 static void generic_dpi_panel_disable(struct omap_dss_device *dssdev)
 339 {
 340         generic_dpi_panel_power_off(dssdev);
 341
 342         dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
 343 }
 344
 345 static int generic_dpi_panel_suspend(struct omap_dss_device *dssdev)
 346 {
 347         generic_dpi_panel_power_off(dssdev);
 348
 349         dssdev->state = OMAP_DSS_DISPLAY_SUSPENDED;
 350
 351         return 0;
 352 }
 353
 354 static int generic_dpi_panel_resume(struct omap_dss_device *dssdev)
 355 {
 356         int r = 0;
 357
 358         r = generic_dpi_panel_power_on(dssdev);
 359         if (r)
 360                 return r;
 361
 362         dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
 363
 364         return 0;
 365 }
 366
 367 static void generic_dpi_panel_set_timings(struct omap_dss_device *dssdev,
 368                 struct omap_video_timings *timings)
 369 {
 370         dpi_set_timings(dssdev, timings);
 371 }
 372
 373 static void generic_dpi_panel_get_timings(struct omap_dss_device *dssdev,
 374                 struct omap_video_timings *timings)
 375 {
 376         *timings = dssdev->panel.timings;
 377 }
 378
 379 static int generic_dpi_panel_check_timings(struct omap_dss_device *dssdev,
 380                 struct omap_video_timings *timings)
 381 {
 382         return dpi_check_timings(dssdev, timings);
 383 }
 384
 385 static struct omap_dss_driver dpi_driver = {
 386         .probe          = generic_dpi_panel_probe,
 387         .remove         = __exit_p(generic_dpi_panel_remove),
 388
 389         .enable         = generic_dpi_panel_enable,
 390         .disable        = generic_dpi_panel_disable,
 391         .suspend        = generic_dpi_panel_suspend,
 392         .resume         = generic_dpi_panel_resume,
 393
 394         .set_timings    = generic_dpi_panel_set_timings,
 395         .get_timings    = generic_dpi_panel_get_timings,
 396         .check_timings  = generic_dpi_panel_check_timings,
 397
 398         .driver         = {
 399                 .name   = "generic_dpi_panel",
 400                 .owner  = THIS_MODULE,
 401         },
 402 };
 403
 404 static int __init generic_dpi_panel_drv_init(void)
 405 {
 406         return omap_dss_register_driver(&dpi_driver);
 407 }
 408
 409 static void __exit generic_dpi_panel_drv_exit(void)
 410 {
 411         omap_dss_unregister_driver(&dpi_driver);
 412 }
 413
 414 module_init(generic_dpi_panel_drv_init);
 415 module_exit(generic_dpi_panel_drv_exit);
 416 MODULE_LICENSE("GPL");