OMAPDSS: VENC: fix NULL pointer dereference in DSS2 VENC sysfs debug attr on OMAP4
[zen-stable.git] / drivers / video / omap2 / displays / panel-generic-dpi.c
blob28b9a6d61b0f96c05e52dd67923ea20d79583d24
1 /*
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
27 * more details.
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>
40 struct panel_config {
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;
49 int power_on_delay;
50 int power_off_delay;
53 * Used to match device to panel configuration
54 * when use generic panel driver
56 const char *name;
59 /* Panel configurations */
60 static struct panel_config generic_dpi_panels[] = {
61 /* Sharp LQ043T1DG01 */
64 .x_res = 480,
65 .y_res = 272,
67 .pixel_clock = 9000,
69 .hsw = 42,
70 .hfp = 3,
71 .hbp = 2,
73 .vsw = 11,
74 .vfp = 3,
75 .vbp = 2,
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",
86 /* Sharp LS037V7DW01 */
89 .x_res = 480,
90 .y_res = 640,
92 .pixel_clock = 19200,
94 .hsw = 2,
95 .hfp = 1,
96 .hbp = 28,
98 .vsw = 1,
99 .vfp = 1,
100 .vbp = 1,
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",
111 /* Toppoly TDO35S */
114 .x_res = 480,
115 .y_res = 640,
117 .pixel_clock = 26000,
119 .hfp = 104,
120 .hsw = 8,
121 .hbp = 8,
123 .vfp = 4,
124 .vsw = 2,
125 .vbp = 2,
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",
137 /* Samsung LTE430WQ-F0C */
140 .x_res = 480,
141 .y_res = 272,
143 .pixel_clock = 9200,
145 .hfp = 8,
146 .hsw = 41,
147 .hbp = 45 - 41,
149 .vfp = 4,
150 .vsw = 10,
151 .vbp = 12 - 10,
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",
162 /* Seiko 70WVW1TZ3Z3 */
165 .x_res = 800,
166 .y_res = 480,
168 .pixel_clock = 33000,
170 .hsw = 128,
171 .hfp = 10,
172 .hbp = 10,
174 .vsw = 2,
175 .vfp = 4,
176 .vbp = 11,
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",
187 /* Powertip PH480272T */
190 .x_res = 480,
191 .y_res = 272,
193 .pixel_clock = 9000,
195 .hsw = 40,
196 .hfp = 2,
197 .hbp = 2,
199 .vsw = 10,
200 .vfp = 2,
201 .vbp = 2,
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",
212 /* Innolux AT070TN83 */
215 .x_res = 800,
216 .y_res = 480,
218 .pixel_clock = 40000,
220 .hsw = 48,
221 .hfp = 1,
222 .hbp = 1,
224 .vsw = 3,
225 .vfp = 12,
226 .vbp = 25,
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",
237 /* NEC NL2432DR22-11B */
240 .x_res = 240,
241 .y_res = 320,
243 .pixel_clock = 5400,
245 .hsw = 3,
246 .hfp = 3,
247 .hbp = 39,
249 .vsw = 1,
250 .vfp = 2,
251 .vbp = 7,
253 .config = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
254 OMAP_DSS_LCD_IHS,
255 .name = "nec_nl2432dr22-11b",
258 /* Unknown panel used in OMAP H4 */
261 .x_res = 240,
262 .y_res = 320,
264 .pixel_clock = 6250,
266 .hsw = 15,
267 .hfp = 15,
268 .hbp = 60,
270 .vsw = 1,
271 .vfp = 1,
272 .vbp = 1,
274 .config = OMAP_DSS_LCD_TFT,
276 .name = "h4",
279 /* Unknown panel used in Samsung OMAP2 Apollon */
282 .x_res = 480,
283 .y_res = 272,
285 .pixel_clock = 6250,
287 .hsw = 41,
288 .hfp = 2,
289 .hbp = 2,
291 .vsw = 10,
292 .vfp = 2,
293 .vbp = 2,
295 .config = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
296 OMAP_DSS_LCD_IHS,
298 .name = "apollon",
300 /* FocalTech ETM070003DH6 */
303 .x_res = 800,
304 .y_res = 480,
306 .pixel_clock = 28000,
308 .hsw = 48,
309 .hfp = 40,
310 .hbp = 40,
312 .vsw = 3,
313 .vfp = 13,
314 .vbp = 29,
316 .config = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
317 OMAP_DSS_LCD_IHS,
318 .name = "focaltech_etm070003dh6",
321 /* Microtips Technologies - UMSH-8173MD */
324 .x_res = 800,
325 .y_res = 480,
327 .pixel_clock = 34560,
329 .hsw = 13,
330 .hfp = 101,
331 .hbp = 101,
333 .vsw = 23,
334 .vfp = 1,
335 .vbp = 1,
337 .acbi = 0x0,
338 .acb = 0x0,
339 .config = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS |
340 OMAP_DSS_LCD_IHS | OMAP_DSS_LCD_IPC,
341 .power_on_delay = 0,
342 .power_off_delay = 0,
343 .name = "microtips_umsh_8173md",
346 /* OrtusTech COM43H4M10XTC */
349 .x_res = 480,
350 .y_res = 272,
352 .pixel_clock = 8000,
354 .hsw = 41,
355 .hfp = 8,
356 .hbp = 4,
358 .vsw = 10,
359 .vfp = 4,
360 .vbp = 2,
362 .config = OMAP_DSS_LCD_TFT,
364 .name = "ortustech_com43h4m10xtc",
368 struct panel_drv_data {
370 struct omap_dss_device *dssdev;
372 struct panel_config *panel_config;
375 static inline struct panel_generic_dpi_data
376 *get_panel_data(const struct omap_dss_device *dssdev)
378 return (struct panel_generic_dpi_data *) dssdev->data;
381 static int generic_dpi_panel_power_on(struct omap_dss_device *dssdev)
383 int r;
384 struct panel_generic_dpi_data *panel_data = get_panel_data(dssdev);
385 struct panel_drv_data *drv_data = dev_get_drvdata(&dssdev->dev);
386 struct panel_config *panel_config = drv_data->panel_config;
388 if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
389 return 0;
391 r = omapdss_dpi_display_enable(dssdev);
392 if (r)
393 goto err0;
395 /* wait couple of vsyncs until enabling the LCD */
396 if (panel_config->power_on_delay)
397 msleep(panel_config->power_on_delay);
399 if (panel_data->platform_enable) {
400 r = panel_data->platform_enable(dssdev);
401 if (r)
402 goto err1;
405 return 0;
406 err1:
407 omapdss_dpi_display_disable(dssdev);
408 err0:
409 return r;
412 static void generic_dpi_panel_power_off(struct omap_dss_device *dssdev)
414 struct panel_generic_dpi_data *panel_data = get_panel_data(dssdev);
415 struct panel_drv_data *drv_data = dev_get_drvdata(&dssdev->dev);
416 struct panel_config *panel_config = drv_data->panel_config;
418 if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
419 return;
421 if (panel_data->platform_disable)
422 panel_data->platform_disable(dssdev);
424 /* wait couple of vsyncs after disabling the LCD */
425 if (panel_config->power_off_delay)
426 msleep(panel_config->power_off_delay);
428 omapdss_dpi_display_disable(dssdev);
431 static int generic_dpi_panel_probe(struct omap_dss_device *dssdev)
433 struct panel_generic_dpi_data *panel_data = get_panel_data(dssdev);
434 struct panel_config *panel_config = NULL;
435 struct panel_drv_data *drv_data = NULL;
436 int i;
438 dev_dbg(&dssdev->dev, "probe\n");
440 if (!panel_data || !panel_data->name)
441 return -EINVAL;
443 for (i = 0; i < ARRAY_SIZE(generic_dpi_panels); i++) {
444 if (strcmp(panel_data->name, generic_dpi_panels[i].name) == 0) {
445 panel_config = &generic_dpi_panels[i];
446 break;
450 if (!panel_config)
451 return -EINVAL;
453 dssdev->panel.config = panel_config->config;
454 dssdev->panel.timings = panel_config->timings;
455 dssdev->panel.acb = panel_config->acb;
456 dssdev->panel.acbi = panel_config->acbi;
458 drv_data = kzalloc(sizeof(*drv_data), GFP_KERNEL);
459 if (!drv_data)
460 return -ENOMEM;
462 drv_data->dssdev = dssdev;
463 drv_data->panel_config = panel_config;
465 dev_set_drvdata(&dssdev->dev, drv_data);
467 return 0;
470 static void __exit generic_dpi_panel_remove(struct omap_dss_device *dssdev)
472 struct panel_drv_data *drv_data = dev_get_drvdata(&dssdev->dev);
474 dev_dbg(&dssdev->dev, "remove\n");
476 kfree(drv_data);
478 dev_set_drvdata(&dssdev->dev, NULL);
481 static int generic_dpi_panel_enable(struct omap_dss_device *dssdev)
483 int r = 0;
485 r = generic_dpi_panel_power_on(dssdev);
486 if (r)
487 return r;
489 dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
491 return 0;
494 static void generic_dpi_panel_disable(struct omap_dss_device *dssdev)
496 generic_dpi_panel_power_off(dssdev);
498 dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
501 static int generic_dpi_panel_suspend(struct omap_dss_device *dssdev)
503 generic_dpi_panel_power_off(dssdev);
505 dssdev->state = OMAP_DSS_DISPLAY_SUSPENDED;
507 return 0;
510 static int generic_dpi_panel_resume(struct omap_dss_device *dssdev)
512 int r = 0;
514 r = generic_dpi_panel_power_on(dssdev);
515 if (r)
516 return r;
518 dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
520 return 0;
523 static void generic_dpi_panel_set_timings(struct omap_dss_device *dssdev,
524 struct omap_video_timings *timings)
526 dpi_set_timings(dssdev, timings);
529 static void generic_dpi_panel_get_timings(struct omap_dss_device *dssdev,
530 struct omap_video_timings *timings)
532 *timings = dssdev->panel.timings;
535 static int generic_dpi_panel_check_timings(struct omap_dss_device *dssdev,
536 struct omap_video_timings *timings)
538 return dpi_check_timings(dssdev, timings);
541 static struct omap_dss_driver dpi_driver = {
542 .probe = generic_dpi_panel_probe,
543 .remove = __exit_p(generic_dpi_panel_remove),
545 .enable = generic_dpi_panel_enable,
546 .disable = generic_dpi_panel_disable,
547 .suspend = generic_dpi_panel_suspend,
548 .resume = generic_dpi_panel_resume,
550 .set_timings = generic_dpi_panel_set_timings,
551 .get_timings = generic_dpi_panel_get_timings,
552 .check_timings = generic_dpi_panel_check_timings,
554 .driver = {
555 .name = "generic_dpi_panel",
556 .owner = THIS_MODULE,
560 static int __init generic_dpi_panel_drv_init(void)
562 return omap_dss_register_driver(&dpi_driver);
565 static void __exit generic_dpi_panel_drv_exit(void)
567 omap_dss_unregister_driver(&dpi_driver);
570 module_init(generic_dpi_panel_drv_init);
571 module_exit(generic_dpi_panel_drv_exit);
572 MODULE_LICENSE("GPL");