2 * Generic DPI Panels support
4 * Copyright (C) 2010 Canonical Ltd.
5 * Author: Bryan Wu <bryan.wu@canonical.com>
7 * LCD panel driver for Sharp LQ043T1DG01
9 * Copyright (C) 2009 Texas Instruments Inc
10 * Author: Vaibhav Hiremath <hvaibhav@ti.com>
12 * LCD panel driver for Toppoly TDO35S
14 * Copyright (C) 2009 CompuLab, Ltd.
15 * Author: Mike Rapoport <mike@compulab.co.il>
17 * Copyright (C) 2008 Nokia Corporation
18 * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
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.
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
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/>.
33 #include <linux/module.h>
34 #include <linux/delay.h>
35 #include <linux/slab.h>
36 #include <video/omapdss.h>
38 #include <video/omap-panel-generic-dpi.h>
41 struct omap_video_timings timings;
43 int acbi; /* ac-bias pin transitions per interrupt */
44 /* Unit: line clocks */
45 int acb; /* ac-bias pin frequency */
47 enum omap_panel_config config;
53 * Used to match device to panel configuration
54 * when use generic panel driver
59 /* Panel configurations */
60 static struct panel_config generic_dpi_panels[] = {
61 /* Sharp LQ043T1DG01 */
79 .config = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
80 OMAP_DSS_LCD_IHS | OMAP_DSS_LCD_IEO,
82 .power_off_delay = 100,
86 /* Sharp LS037V7DW01 */
104 .config = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
106 .power_on_delay = 50,
107 .power_off_delay = 100,
117 .pixel_clock = 26000,
129 .config = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
130 OMAP_DSS_LCD_IHS | OMAP_DSS_LCD_IPC |
133 .power_off_delay = 0,
134 .name = "toppoly_tdo35s",
137 /* Samsung LTE430WQ-F0C */
155 .config = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
158 .power_off_delay = 0,
159 .name = "samsung_lte430wq_f0c",
162 /* Seiko 70WVW1TZ3Z3 */
168 .pixel_clock = 33000,
180 .config = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
183 .power_off_delay = 0,
184 .name = "seiko_70wvw1tz3",
187 /* Powertip PH480272T */
205 .config = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
206 OMAP_DSS_LCD_IHS | OMAP_DSS_LCD_IEO,
208 .power_off_delay = 0,
209 .name = "powertip_ph480272t",
212 /* Innolux AT070TN83 */
218 .pixel_clock = 40000,
230 .config = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
233 .power_off_delay = 0,
234 .name = "innolux_at070tn83",
237 /* NEC NL2432DR22-11B */
253 .config = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
255 .name = "nec_nl2432dr22-11b",
258 /* Unknown panel used in OMAP H4 */
274 .config = OMAP_DSS_LCD_TFT,
279 /* Unknown panel used in Samsung OMAP2 Apollon */
295 .config = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
302 struct panel_drv_data {
304 struct omap_dss_device *dssdev;
306 struct panel_config *panel_config;
309 static inline struct panel_generic_dpi_data
310 *get_panel_data(const struct omap_dss_device *dssdev)
312 return (struct panel_generic_dpi_data *) dssdev->data;
315 static int generic_dpi_panel_power_on(struct omap_dss_device *dssdev)
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;
322 if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
325 r = omapdss_dpi_display_enable(dssdev);
329 /* wait couple of vsyncs until enabling the LCD */
330 if (panel_config->power_on_delay)
331 msleep(panel_config->power_on_delay);
333 if (panel_data->platform_enable) {
334 r = panel_data->platform_enable(dssdev);
341 omapdss_dpi_display_disable(dssdev);
346 static void generic_dpi_panel_power_off(struct omap_dss_device *dssdev)
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;
352 if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
355 if (panel_data->platform_disable)
356 panel_data->platform_disable(dssdev);
358 /* wait couple of vsyncs after disabling the LCD */
359 if (panel_config->power_off_delay)
360 msleep(panel_config->power_off_delay);
362 omapdss_dpi_display_disable(dssdev);
365 static int generic_dpi_panel_probe(struct omap_dss_device *dssdev)
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;
372 dev_dbg(&dssdev->dev, "probe\n");
374 if (!panel_data || !panel_data->name)
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];
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;
392 drv_data = kzalloc(sizeof(*drv_data), GFP_KERNEL);
396 drv_data->dssdev = dssdev;
397 drv_data->panel_config = panel_config;
399 dev_set_drvdata(&dssdev->dev, drv_data);
404 static void __exit generic_dpi_panel_remove(struct omap_dss_device *dssdev)
406 struct panel_drv_data *drv_data = dev_get_drvdata(&dssdev->dev);
408 dev_dbg(&dssdev->dev, "remove\n");
412 dev_set_drvdata(&dssdev->dev, NULL);
415 static int generic_dpi_panel_enable(struct omap_dss_device *dssdev)
419 r = generic_dpi_panel_power_on(dssdev);
423 dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
428 static void generic_dpi_panel_disable(struct omap_dss_device *dssdev)
430 generic_dpi_panel_power_off(dssdev);
432 dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
435 static int generic_dpi_panel_suspend(struct omap_dss_device *dssdev)
437 generic_dpi_panel_power_off(dssdev);
439 dssdev->state = OMAP_DSS_DISPLAY_SUSPENDED;
444 static int generic_dpi_panel_resume(struct omap_dss_device *dssdev)
448 r = generic_dpi_panel_power_on(dssdev);
452 dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
457 static void generic_dpi_panel_set_timings(struct omap_dss_device *dssdev,
458 struct omap_video_timings *timings)
460 dpi_set_timings(dssdev, timings);
463 static void generic_dpi_panel_get_timings(struct omap_dss_device *dssdev,
464 struct omap_video_timings *timings)
466 *timings = dssdev->panel.timings;
469 static int generic_dpi_panel_check_timings(struct omap_dss_device *dssdev,
470 struct omap_video_timings *timings)
472 return dpi_check_timings(dssdev, timings);
475 static struct omap_dss_driver dpi_driver = {
476 .probe = generic_dpi_panel_probe,
477 .remove = __exit_p(generic_dpi_panel_remove),
479 .enable = generic_dpi_panel_enable,
480 .disable = generic_dpi_panel_disable,
481 .suspend = generic_dpi_panel_suspend,
482 .resume = generic_dpi_panel_resume,
484 .set_timings = generic_dpi_panel_set_timings,
485 .get_timings = generic_dpi_panel_get_timings,
486 .check_timings = generic_dpi_panel_check_timings,
489 .name = "generic_dpi_panel",
490 .owner = THIS_MODULE,
494 static int __init generic_dpi_panel_drv_init(void)
496 return omap_dss_register_driver(&dpi_driver);
499 static void __exit generic_dpi_panel_drv_exit(void)
501 omap_dss_unregister_driver(&dpi_driver);
504 module_init(generic_dpi_panel_drv_init);
505 module_exit(generic_dpi_panel_drv_exit);
506 MODULE_LICENSE("GPL");