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
 187 struct panel_drv_data {
 188
 189         struct omap_dss_device *dssdev;
 190
 191         struct panel_config *panel_config;
 192 };
 193
 194 static inline struct panel_generic_dpi_data
 195 *get_panel_data(const struct omap_dss_device *dssdev)
 196 {
 197         return (struct panel_generic_dpi_data *) dssdev->data;
 198 }
 199
 200 static int generic_dpi_panel_power_on(struct omap_dss_device *dssdev)
 201 {
 202         int r;
 203         struct panel_generic_dpi_data *panel_data = get_panel_data(dssdev);
 204         struct panel_drv_data *drv_data = dev_get_drvdata(&dssdev->dev);
 205         struct panel_config *panel_config = drv_data->panel_config;
 206
 207         if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
 208                 return 0;
 209
 210         r = omapdss_dpi_display_enable(dssdev);
 211         if (r)
 212                 goto err0;
 213
 214         /* wait couple of vsyncs until enabling the LCD */
 215         if (panel_config->power_on_delay)
 216                 msleep(panel_config->power_on_delay);
 217
 218         if (panel_data->platform_enable) {
 219                 r = panel_data->platform_enable(dssdev);
 220                 if (r)
 221                         goto err1;
 222         }
 223
 224         return 0;
 225 err1:
 226         omapdss_dpi_display_disable(dssdev);
 227 err0:
 228         return r;
 229 }
 230
 231 static void generic_dpi_panel_power_off(struct omap_dss_device *dssdev)
 232 {
 233         struct panel_generic_dpi_data *panel_data = get_panel_data(dssdev);
 234         struct panel_drv_data *drv_data = dev_get_drvdata(&dssdev->dev);
 235         struct panel_config *panel_config = drv_data->panel_config;
 236
 237         if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
 238                 return;
 239
 240         if (panel_data->platform_disable)
 241                 panel_data->platform_disable(dssdev);
 242
 243         /* wait couple of vsyncs after disabling the LCD */
 244         if (panel_config->power_off_delay)
 245                 msleep(panel_config->power_off_delay);
 246
 247         omapdss_dpi_display_disable(dssdev);
 248 }
 249
 250 static int generic_dpi_panel_probe(struct omap_dss_device *dssdev)
 251 {
 252         struct panel_generic_dpi_data *panel_data = get_panel_data(dssdev);
 253         struct panel_config *panel_config = NULL;
 254         struct panel_drv_data *drv_data = NULL;
 255         int i;
 256
 257         dev_dbg(&dssdev->dev, "probe\n");
 258
 259         if (!panel_data || !panel_data->name)
 260                 return -EINVAL;
 261
 262         for (i = 0; i < ARRAY_SIZE(generic_dpi_panels); i++) {
 263                 if (strcmp(panel_data->name, generic_dpi_panels[i].name) == 0) {
 264                         panel_config = &generic_dpi_panels[i];
 265                         break;
 266                 }
 267         }
 268
 269         if (!panel_config)
 270                 return -EINVAL;
 271
 272         dssdev->panel.config = panel_config->config;
 273         dssdev->panel.timings = panel_config->timings;
 274         dssdev->panel.acb = panel_config->acb;
 275         dssdev->panel.acbi = panel_config->acbi;
 276
 277         drv_data = kzalloc(sizeof(*drv_data), GFP_KERNEL);
 278         if (!drv_data)
 279                 return -ENOMEM;
 280
 281         drv_data->dssdev = dssdev;
 282         drv_data->panel_config = panel_config;
 283
 284         dev_set_drvdata(&dssdev->dev, drv_data);
 285
 286         return 0;
 287 }
 288
 289 static void generic_dpi_panel_remove(struct omap_dss_device *dssdev)
 290 {
 291         struct panel_drv_data *drv_data = dev_get_drvdata(&dssdev->dev);
 292
 293         dev_dbg(&dssdev->dev, "remove\n");
 294
 295         kfree(drv_data);
 296
 297         dev_set_drvdata(&dssdev->dev, NULL);
 298 }
 299
 300 static int generic_dpi_panel_enable(struct omap_dss_device *dssdev)
 301 {
 302         int r = 0;
 303
 304         r = generic_dpi_panel_power_on(dssdev);
 305         if (r)
 306                 return r;
 307
 308         dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
 309
 310         return 0;
 311 }
 312
 313 static void generic_dpi_panel_disable(struct omap_dss_device *dssdev)
 314 {
 315         generic_dpi_panel_power_off(dssdev);
 316
 317         dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
 318 }
 319
 320 static int generic_dpi_panel_suspend(struct omap_dss_device *dssdev)
 321 {
 322         generic_dpi_panel_power_off(dssdev);
 323
 324         dssdev->state = OMAP_DSS_DISPLAY_SUSPENDED;
 325
 326         return 0;
 327 }
 328
 329 static int generic_dpi_panel_resume(struct omap_dss_device *dssdev)
 330 {
 331         int r = 0;
 332
 333         r = generic_dpi_panel_power_on(dssdev);
 334         if (r)
 335                 return r;
 336
 337         dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
 338
 339         return 0;
 340 }
 341
 342 static void generic_dpi_panel_set_timings(struct omap_dss_device *dssdev,
 343                 struct omap_video_timings *timings)
 344 {
 345         dpi_set_timings(dssdev, timings);
 346 }
 347
 348 static void generic_dpi_panel_get_timings(struct omap_dss_device *dssdev,
 349                 struct omap_video_timings *timings)
 350 {
 351         *timings = dssdev->panel.timings;
 352 }
 353
 354 static int generic_dpi_panel_check_timings(struct omap_dss_device *dssdev,
 355                 struct omap_video_timings *timings)
 356 {
 357         return dpi_check_timings(dssdev, timings);
 358 }
 359
 360 static struct omap_dss_driver dpi_driver = {
 361         .probe          = generic_dpi_panel_probe,
 362         .remove         = generic_dpi_panel_remove,
 363
 364         .enable         = generic_dpi_panel_enable,
 365         .disable        = generic_dpi_panel_disable,
 366         .suspend        = generic_dpi_panel_suspend,
 367         .resume         = generic_dpi_panel_resume,
 368
 369         .set_timings    = generic_dpi_panel_set_timings,
 370         .get_timings    = generic_dpi_panel_get_timings,
 371         .check_timings  = generic_dpi_panel_check_timings,
 372
 373         .driver         = {
 374                 .name   = "generic_dpi_panel",
 375                 .owner  = THIS_MODULE,
 376         },
 377 };
 378
 379 static int __init generic_dpi_panel_drv_init(void)
 380 {
 381         return omap_dss_register_driver(&dpi_driver);
 382 }
 383
 384 static void __exit generic_dpi_panel_drv_exit(void)
 385 {
 386         omap_dss_unregister_driver(&dpi_driver);
 387 }
 388
 389 module_init(generic_dpi_panel_drv_init);
 390 module_exit(generic_dpi_panel_drv_exit);
 391 MODULE_LICENSE("GPL");