Commit | Line | Data |
---|---|---|
dbc23840 TV |
1 | /* |
2 | * Generic DSI Command Mode panel driver | |
3 | * | |
4 | * Copyright (C) 2013 Texas Instruments | |
5 | * Author: Tomi Valkeinen <tomi.valkeinen@ti.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License version 2 as published by | |
9 | * the Free Software Foundation. | |
10 | */ | |
11 | ||
12 | /* #define DEBUG */ | |
13 | ||
14 | #include <linux/backlight.h> | |
15 | #include <linux/delay.h> | |
d0196c8d | 16 | #include <linux/gpio/consumer.h> |
dbc23840 TV |
17 | #include <linux/interrupt.h> |
18 | #include <linux/jiffies.h> | |
19 | #include <linux/module.h> | |
20 | #include <linux/platform_device.h> | |
21 | #include <linux/sched.h> | |
22 | #include <linux/slab.h> | |
23 | #include <linux/workqueue.h> | |
cdeeaca2 TV |
24 | #include <linux/of_device.h> |
25 | #include <linux/of_gpio.h> | |
dbc23840 | 26 | |
dbc23840 TV |
27 | #include <video/mipi_display.h> |
28 | ||
32043da7 PU |
29 | #include "../dss/omapdss.h" |
30 | ||
dbc23840 TV |
31 | /* DSI Virtual channel. Hardcoded for now. */ |
32 | #define TCH 0 | |
33 | ||
34 | #define DCS_READ_NUM_ERRORS 0x05 | |
35 | #define DCS_BRIGHTNESS 0x51 | |
36 | #define DCS_CTRL_DISPLAY 0x53 | |
37 | #define DCS_GET_ID1 0xda | |
38 | #define DCS_GET_ID2 0xdb | |
39 | #define DCS_GET_ID3 0xdc | |
40 | ||
41 | struct panel_drv_data { | |
42 | struct omap_dss_device dssdev; | |
43 | struct omap_dss_device *in; | |
44 | ||
45 | struct omap_video_timings timings; | |
46 | ||
47 | struct platform_device *pdev; | |
48 | ||
49 | struct mutex lock; | |
50 | ||
51 | struct backlight_device *bldev; | |
52 | ||
53 | unsigned long hw_guard_end; /* next value of jiffies when we can | |
54 | * issue the next sleep in/out command | |
55 | */ | |
56 | unsigned long hw_guard_wait; /* max guard time in jiffies */ | |
57 | ||
58 | /* panel HW configuration from DT or platform data */ | |
59 | int reset_gpio; | |
60 | int ext_te_gpio; | |
61 | ||
62 | bool use_dsi_backlight; | |
63 | ||
64 | struct omap_dsi_pin_config pin_config; | |
65 | ||
66 | /* runtime variables */ | |
67 | bool enabled; | |
68 | ||
69 | bool te_enabled; | |
70 | ||
71 | atomic_t do_update; | |
72 | int channel; | |
73 | ||
74 | struct delayed_work te_timeout_work; | |
75 | ||
76 | bool intro_printed; | |
77 | ||
78 | struct workqueue_struct *workqueue; | |
79 | ||
80 | bool ulps_enabled; | |
81 | unsigned ulps_timeout; | |
82 | struct delayed_work ulps_work; | |
83 | }; | |
84 | ||
85 | #define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev) | |
86 | ||
87 | static irqreturn_t dsicm_te_isr(int irq, void *data); | |
88 | static void dsicm_te_timeout_work_callback(struct work_struct *work); | |
89 | static int _dsicm_enable_te(struct panel_drv_data *ddata, bool enable); | |
90 | ||
91 | static int dsicm_panel_reset(struct panel_drv_data *ddata); | |
92 | ||
93 | static void dsicm_ulps_work(struct work_struct *work); | |
94 | ||
95 | static void hw_guard_start(struct panel_drv_data *ddata, int guard_msec) | |
96 | { | |
97 | ddata->hw_guard_wait = msecs_to_jiffies(guard_msec); | |
98 | ddata->hw_guard_end = jiffies + ddata->hw_guard_wait; | |
99 | } | |
100 | ||
101 | static void hw_guard_wait(struct panel_drv_data *ddata) | |
102 | { | |
103 | unsigned long wait = ddata->hw_guard_end - jiffies; | |
104 | ||
105 | if ((long)wait > 0 && wait <= ddata->hw_guard_wait) { | |
106 | set_current_state(TASK_UNINTERRUPTIBLE); | |
107 | schedule_timeout(wait); | |
108 | } | |
109 | } | |
110 | ||
111 | static int dsicm_dcs_read_1(struct panel_drv_data *ddata, u8 dcs_cmd, u8 *data) | |
112 | { | |
113 | struct omap_dss_device *in = ddata->in; | |
114 | int r; | |
115 | u8 buf[1]; | |
116 | ||
117 | r = in->ops.dsi->dcs_read(in, ddata->channel, dcs_cmd, buf, 1); | |
118 | ||
119 | if (r < 0) | |
120 | return r; | |
121 | ||
122 | *data = buf[0]; | |
123 | ||
124 | return 0; | |
125 | } | |
126 | ||
127 | static int dsicm_dcs_write_0(struct panel_drv_data *ddata, u8 dcs_cmd) | |
128 | { | |
129 | struct omap_dss_device *in = ddata->in; | |
130 | return in->ops.dsi->dcs_write(in, ddata->channel, &dcs_cmd, 1); | |
131 | } | |
132 | ||
133 | static int dsicm_dcs_write_1(struct panel_drv_data *ddata, u8 dcs_cmd, u8 param) | |
134 | { | |
135 | struct omap_dss_device *in = ddata->in; | |
136 | u8 buf[2] = { dcs_cmd, param }; | |
137 | ||
138 | return in->ops.dsi->dcs_write(in, ddata->channel, buf, 2); | |
139 | } | |
140 | ||
141 | static int dsicm_sleep_in(struct panel_drv_data *ddata) | |
142 | ||
143 | { | |
144 | struct omap_dss_device *in = ddata->in; | |
145 | u8 cmd; | |
146 | int r; | |
147 | ||
148 | hw_guard_wait(ddata); | |
149 | ||
150 | cmd = MIPI_DCS_ENTER_SLEEP_MODE; | |
151 | r = in->ops.dsi->dcs_write_nosync(in, ddata->channel, &cmd, 1); | |
152 | if (r) | |
153 | return r; | |
154 | ||
155 | hw_guard_start(ddata, 120); | |
156 | ||
157 | usleep_range(5000, 10000); | |
158 | ||
159 | return 0; | |
160 | } | |
161 | ||
162 | static int dsicm_sleep_out(struct panel_drv_data *ddata) | |
163 | { | |
164 | int r; | |
165 | ||
166 | hw_guard_wait(ddata); | |
167 | ||
168 | r = dsicm_dcs_write_0(ddata, MIPI_DCS_EXIT_SLEEP_MODE); | |
169 | if (r) | |
170 | return r; | |
171 | ||
172 | hw_guard_start(ddata, 120); | |
173 | ||
174 | usleep_range(5000, 10000); | |
175 | ||
176 | return 0; | |
177 | } | |
178 | ||
179 | static int dsicm_get_id(struct panel_drv_data *ddata, u8 *id1, u8 *id2, u8 *id3) | |
180 | { | |
181 | int r; | |
182 | ||
183 | r = dsicm_dcs_read_1(ddata, DCS_GET_ID1, id1); | |
184 | if (r) | |
185 | return r; | |
186 | r = dsicm_dcs_read_1(ddata, DCS_GET_ID2, id2); | |
187 | if (r) | |
188 | return r; | |
189 | r = dsicm_dcs_read_1(ddata, DCS_GET_ID3, id3); | |
190 | if (r) | |
191 | return r; | |
192 | ||
193 | return 0; | |
194 | } | |
195 | ||
196 | static int dsicm_set_update_window(struct panel_drv_data *ddata, | |
197 | u16 x, u16 y, u16 w, u16 h) | |
198 | { | |
199 | struct omap_dss_device *in = ddata->in; | |
200 | int r; | |
201 | u16 x1 = x; | |
202 | u16 x2 = x + w - 1; | |
203 | u16 y1 = y; | |
204 | u16 y2 = y + h - 1; | |
205 | ||
206 | u8 buf[5]; | |
207 | buf[0] = MIPI_DCS_SET_COLUMN_ADDRESS; | |
208 | buf[1] = (x1 >> 8) & 0xff; | |
209 | buf[2] = (x1 >> 0) & 0xff; | |
210 | buf[3] = (x2 >> 8) & 0xff; | |
211 | buf[4] = (x2 >> 0) & 0xff; | |
212 | ||
213 | r = in->ops.dsi->dcs_write_nosync(in, ddata->channel, buf, sizeof(buf)); | |
214 | if (r) | |
215 | return r; | |
216 | ||
217 | buf[0] = MIPI_DCS_SET_PAGE_ADDRESS; | |
218 | buf[1] = (y1 >> 8) & 0xff; | |
219 | buf[2] = (y1 >> 0) & 0xff; | |
220 | buf[3] = (y2 >> 8) & 0xff; | |
221 | buf[4] = (y2 >> 0) & 0xff; | |
222 | ||
223 | r = in->ops.dsi->dcs_write_nosync(in, ddata->channel, buf, sizeof(buf)); | |
224 | if (r) | |
225 | return r; | |
226 | ||
227 | in->ops.dsi->bta_sync(in, ddata->channel); | |
228 | ||
229 | return r; | |
230 | } | |
231 | ||
232 | static void dsicm_queue_ulps_work(struct panel_drv_data *ddata) | |
233 | { | |
234 | if (ddata->ulps_timeout > 0) | |
235 | queue_delayed_work(ddata->workqueue, &ddata->ulps_work, | |
236 | msecs_to_jiffies(ddata->ulps_timeout)); | |
237 | } | |
238 | ||
239 | static void dsicm_cancel_ulps_work(struct panel_drv_data *ddata) | |
240 | { | |
241 | cancel_delayed_work(&ddata->ulps_work); | |
242 | } | |
243 | ||
244 | static int dsicm_enter_ulps(struct panel_drv_data *ddata) | |
245 | { | |
246 | struct omap_dss_device *in = ddata->in; | |
247 | int r; | |
248 | ||
249 | if (ddata->ulps_enabled) | |
250 | return 0; | |
251 | ||
252 | dsicm_cancel_ulps_work(ddata); | |
253 | ||
254 | r = _dsicm_enable_te(ddata, false); | |
255 | if (r) | |
256 | goto err; | |
257 | ||
258 | if (gpio_is_valid(ddata->ext_te_gpio)) | |
259 | disable_irq(gpio_to_irq(ddata->ext_te_gpio)); | |
260 | ||
261 | in->ops.dsi->disable(in, false, true); | |
262 | ||
263 | ddata->ulps_enabled = true; | |
264 | ||
265 | return 0; | |
266 | ||
267 | err: | |
268 | dev_err(&ddata->pdev->dev, "enter ULPS failed"); | |
269 | dsicm_panel_reset(ddata); | |
270 | ||
271 | ddata->ulps_enabled = false; | |
272 | ||
273 | dsicm_queue_ulps_work(ddata); | |
274 | ||
275 | return r; | |
276 | } | |
277 | ||
278 | static int dsicm_exit_ulps(struct panel_drv_data *ddata) | |
279 | { | |
280 | struct omap_dss_device *in = ddata->in; | |
281 | int r; | |
282 | ||
283 | if (!ddata->ulps_enabled) | |
284 | return 0; | |
285 | ||
286 | r = in->ops.dsi->enable(in); | |
287 | if (r) { | |
288 | dev_err(&ddata->pdev->dev, "failed to enable DSI\n"); | |
289 | goto err1; | |
290 | } | |
291 | ||
292 | in->ops.dsi->enable_hs(in, ddata->channel, true); | |
293 | ||
294 | r = _dsicm_enable_te(ddata, true); | |
295 | if (r) { | |
296 | dev_err(&ddata->pdev->dev, "failed to re-enable TE"); | |
297 | goto err2; | |
298 | } | |
299 | ||
300 | if (gpio_is_valid(ddata->ext_te_gpio)) | |
301 | enable_irq(gpio_to_irq(ddata->ext_te_gpio)); | |
302 | ||
303 | dsicm_queue_ulps_work(ddata); | |
304 | ||
305 | ddata->ulps_enabled = false; | |
306 | ||
307 | return 0; | |
308 | ||
309 | err2: | |
310 | dev_err(&ddata->pdev->dev, "failed to exit ULPS"); | |
311 | ||
312 | r = dsicm_panel_reset(ddata); | |
313 | if (!r) { | |
314 | if (gpio_is_valid(ddata->ext_te_gpio)) | |
315 | enable_irq(gpio_to_irq(ddata->ext_te_gpio)); | |
316 | ddata->ulps_enabled = false; | |
317 | } | |
318 | err1: | |
319 | dsicm_queue_ulps_work(ddata); | |
320 | ||
321 | return r; | |
322 | } | |
323 | ||
324 | static int dsicm_wake_up(struct panel_drv_data *ddata) | |
325 | { | |
326 | if (ddata->ulps_enabled) | |
327 | return dsicm_exit_ulps(ddata); | |
328 | ||
329 | dsicm_cancel_ulps_work(ddata); | |
330 | dsicm_queue_ulps_work(ddata); | |
331 | return 0; | |
332 | } | |
333 | ||
334 | static int dsicm_bl_update_status(struct backlight_device *dev) | |
335 | { | |
336 | struct panel_drv_data *ddata = dev_get_drvdata(&dev->dev); | |
337 | struct omap_dss_device *in = ddata->in; | |
338 | int r; | |
339 | int level; | |
340 | ||
341 | if (dev->props.fb_blank == FB_BLANK_UNBLANK && | |
342 | dev->props.power == FB_BLANK_UNBLANK) | |
343 | level = dev->props.brightness; | |
344 | else | |
345 | level = 0; | |
346 | ||
347 | dev_dbg(&ddata->pdev->dev, "update brightness to %d\n", level); | |
348 | ||
349 | mutex_lock(&ddata->lock); | |
350 | ||
351 | if (ddata->enabled) { | |
352 | in->ops.dsi->bus_lock(in); | |
353 | ||
354 | r = dsicm_wake_up(ddata); | |
355 | if (!r) | |
356 | r = dsicm_dcs_write_1(ddata, DCS_BRIGHTNESS, level); | |
357 | ||
358 | in->ops.dsi->bus_unlock(in); | |
359 | } else { | |
360 | r = 0; | |
361 | } | |
362 | ||
363 | mutex_unlock(&ddata->lock); | |
364 | ||
365 | return r; | |
366 | } | |
367 | ||
368 | static int dsicm_bl_get_intensity(struct backlight_device *dev) | |
369 | { | |
370 | if (dev->props.fb_blank == FB_BLANK_UNBLANK && | |
371 | dev->props.power == FB_BLANK_UNBLANK) | |
372 | return dev->props.brightness; | |
373 | ||
374 | return 0; | |
375 | } | |
376 | ||
377 | static const struct backlight_ops dsicm_bl_ops = { | |
378 | .get_brightness = dsicm_bl_get_intensity, | |
379 | .update_status = dsicm_bl_update_status, | |
380 | }; | |
381 | ||
382 | static void dsicm_get_resolution(struct omap_dss_device *dssdev, | |
383 | u16 *xres, u16 *yres) | |
384 | { | |
385 | *xres = dssdev->panel.timings.x_res; | |
386 | *yres = dssdev->panel.timings.y_res; | |
387 | } | |
388 | ||
389 | static ssize_t dsicm_num_errors_show(struct device *dev, | |
390 | struct device_attribute *attr, char *buf) | |
391 | { | |
392 | struct platform_device *pdev = to_platform_device(dev); | |
393 | struct panel_drv_data *ddata = platform_get_drvdata(pdev); | |
394 | struct omap_dss_device *in = ddata->in; | |
395 | u8 errors = 0; | |
396 | int r; | |
397 | ||
398 | mutex_lock(&ddata->lock); | |
399 | ||
400 | if (ddata->enabled) { | |
401 | in->ops.dsi->bus_lock(in); | |
402 | ||
403 | r = dsicm_wake_up(ddata); | |
404 | if (!r) | |
405 | r = dsicm_dcs_read_1(ddata, DCS_READ_NUM_ERRORS, | |
406 | &errors); | |
407 | ||
408 | in->ops.dsi->bus_unlock(in); | |
409 | } else { | |
410 | r = -ENODEV; | |
411 | } | |
412 | ||
413 | mutex_unlock(&ddata->lock); | |
414 | ||
415 | if (r) | |
416 | return r; | |
417 | ||
418 | return snprintf(buf, PAGE_SIZE, "%d\n", errors); | |
419 | } | |
420 | ||
421 | static ssize_t dsicm_hw_revision_show(struct device *dev, | |
422 | struct device_attribute *attr, char *buf) | |
423 | { | |
424 | struct platform_device *pdev = to_platform_device(dev); | |
425 | struct panel_drv_data *ddata = platform_get_drvdata(pdev); | |
426 | struct omap_dss_device *in = ddata->in; | |
427 | u8 id1, id2, id3; | |
428 | int r; | |
429 | ||
430 | mutex_lock(&ddata->lock); | |
431 | ||
432 | if (ddata->enabled) { | |
433 | in->ops.dsi->bus_lock(in); | |
434 | ||
435 | r = dsicm_wake_up(ddata); | |
436 | if (!r) | |
437 | r = dsicm_get_id(ddata, &id1, &id2, &id3); | |
438 | ||
439 | in->ops.dsi->bus_unlock(in); | |
440 | } else { | |
441 | r = -ENODEV; | |
442 | } | |
443 | ||
444 | mutex_unlock(&ddata->lock); | |
445 | ||
446 | if (r) | |
447 | return r; | |
448 | ||
449 | return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x\n", id1, id2, id3); | |
450 | } | |
451 | ||
452 | static ssize_t dsicm_store_ulps(struct device *dev, | |
453 | struct device_attribute *attr, | |
454 | const char *buf, size_t count) | |
455 | { | |
456 | struct platform_device *pdev = to_platform_device(dev); | |
457 | struct panel_drv_data *ddata = platform_get_drvdata(pdev); | |
458 | struct omap_dss_device *in = ddata->in; | |
459 | unsigned long t; | |
460 | int r; | |
461 | ||
462 | r = kstrtoul(buf, 0, &t); | |
463 | if (r) | |
464 | return r; | |
465 | ||
466 | mutex_lock(&ddata->lock); | |
467 | ||
468 | if (ddata->enabled) { | |
469 | in->ops.dsi->bus_lock(in); | |
470 | ||
471 | if (t) | |
472 | r = dsicm_enter_ulps(ddata); | |
473 | else | |
474 | r = dsicm_wake_up(ddata); | |
475 | ||
476 | in->ops.dsi->bus_unlock(in); | |
477 | } | |
478 | ||
479 | mutex_unlock(&ddata->lock); | |
480 | ||
481 | if (r) | |
482 | return r; | |
483 | ||
484 | return count; | |
485 | } | |
486 | ||
487 | static ssize_t dsicm_show_ulps(struct device *dev, | |
488 | struct device_attribute *attr, | |
489 | char *buf) | |
490 | { | |
491 | struct platform_device *pdev = to_platform_device(dev); | |
492 | struct panel_drv_data *ddata = platform_get_drvdata(pdev); | |
493 | unsigned t; | |
494 | ||
495 | mutex_lock(&ddata->lock); | |
496 | t = ddata->ulps_enabled; | |
497 | mutex_unlock(&ddata->lock); | |
498 | ||
499 | return snprintf(buf, PAGE_SIZE, "%u\n", t); | |
500 | } | |
501 | ||
502 | static ssize_t dsicm_store_ulps_timeout(struct device *dev, | |
503 | struct device_attribute *attr, | |
504 | const char *buf, size_t count) | |
505 | { | |
506 | struct platform_device *pdev = to_platform_device(dev); | |
507 | struct panel_drv_data *ddata = platform_get_drvdata(pdev); | |
508 | struct omap_dss_device *in = ddata->in; | |
509 | unsigned long t; | |
510 | int r; | |
511 | ||
512 | r = kstrtoul(buf, 0, &t); | |
513 | if (r) | |
514 | return r; | |
515 | ||
516 | mutex_lock(&ddata->lock); | |
517 | ddata->ulps_timeout = t; | |
518 | ||
519 | if (ddata->enabled) { | |
520 | /* dsicm_wake_up will restart the timer */ | |
521 | in->ops.dsi->bus_lock(in); | |
522 | r = dsicm_wake_up(ddata); | |
523 | in->ops.dsi->bus_unlock(in); | |
524 | } | |
525 | ||
526 | mutex_unlock(&ddata->lock); | |
527 | ||
528 | if (r) | |
529 | return r; | |
530 | ||
531 | return count; | |
532 | } | |
533 | ||
534 | static ssize_t dsicm_show_ulps_timeout(struct device *dev, | |
535 | struct device_attribute *attr, | |
536 | char *buf) | |
537 | { | |
538 | struct platform_device *pdev = to_platform_device(dev); | |
539 | struct panel_drv_data *ddata = platform_get_drvdata(pdev); | |
540 | unsigned t; | |
541 | ||
542 | mutex_lock(&ddata->lock); | |
543 | t = ddata->ulps_timeout; | |
544 | mutex_unlock(&ddata->lock); | |
545 | ||
546 | return snprintf(buf, PAGE_SIZE, "%u\n", t); | |
547 | } | |
548 | ||
549 | static DEVICE_ATTR(num_dsi_errors, S_IRUGO, dsicm_num_errors_show, NULL); | |
550 | static DEVICE_ATTR(hw_revision, S_IRUGO, dsicm_hw_revision_show, NULL); | |
551 | static DEVICE_ATTR(ulps, S_IRUGO | S_IWUSR, | |
552 | dsicm_show_ulps, dsicm_store_ulps); | |
553 | static DEVICE_ATTR(ulps_timeout, S_IRUGO | S_IWUSR, | |
554 | dsicm_show_ulps_timeout, dsicm_store_ulps_timeout); | |
555 | ||
556 | static struct attribute *dsicm_attrs[] = { | |
557 | &dev_attr_num_dsi_errors.attr, | |
558 | &dev_attr_hw_revision.attr, | |
559 | &dev_attr_ulps.attr, | |
560 | &dev_attr_ulps_timeout.attr, | |
561 | NULL, | |
562 | }; | |
563 | ||
564 | static struct attribute_group dsicm_attr_group = { | |
565 | .attrs = dsicm_attrs, | |
566 | }; | |
567 | ||
568 | static void dsicm_hw_reset(struct panel_drv_data *ddata) | |
569 | { | |
570 | if (!gpio_is_valid(ddata->reset_gpio)) | |
571 | return; | |
572 | ||
573 | gpio_set_value(ddata->reset_gpio, 1); | |
574 | udelay(10); | |
575 | /* reset the panel */ | |
576 | gpio_set_value(ddata->reset_gpio, 0); | |
577 | /* assert reset */ | |
578 | udelay(10); | |
579 | gpio_set_value(ddata->reset_gpio, 1); | |
580 | /* wait after releasing reset */ | |
581 | usleep_range(5000, 10000); | |
582 | } | |
583 | ||
584 | static int dsicm_power_on(struct panel_drv_data *ddata) | |
585 | { | |
586 | struct omap_dss_device *in = ddata->in; | |
587 | u8 id1, id2, id3; | |
588 | int r; | |
589 | struct omap_dss_dsi_config dsi_config = { | |
590 | .mode = OMAP_DSS_DSI_CMD_MODE, | |
591 | .pixel_format = OMAP_DSS_DSI_FMT_RGB888, | |
592 | .timings = &ddata->timings, | |
593 | .hs_clk_min = 150000000, | |
594 | .hs_clk_max = 300000000, | |
595 | .lp_clk_min = 7000000, | |
596 | .lp_clk_max = 10000000, | |
597 | }; | |
598 | ||
cdeeaca2 TV |
599 | if (ddata->pin_config.num_pins > 0) { |
600 | r = in->ops.dsi->configure_pins(in, &ddata->pin_config); | |
601 | if (r) { | |
602 | dev_err(&ddata->pdev->dev, | |
603 | "failed to configure DSI pins\n"); | |
604 | goto err0; | |
605 | } | |
cf6ac4ce | 606 | } |
dbc23840 TV |
607 | |
608 | r = in->ops.dsi->set_config(in, &dsi_config); | |
609 | if (r) { | |
610 | dev_err(&ddata->pdev->dev, "failed to configure DSI\n"); | |
611 | goto err0; | |
612 | } | |
613 | ||
614 | r = in->ops.dsi->enable(in); | |
615 | if (r) { | |
616 | dev_err(&ddata->pdev->dev, "failed to enable DSI\n"); | |
617 | goto err0; | |
618 | } | |
619 | ||
620 | dsicm_hw_reset(ddata); | |
621 | ||
622 | in->ops.dsi->enable_hs(in, ddata->channel, false); | |
623 | ||
624 | r = dsicm_sleep_out(ddata); | |
625 | if (r) | |
626 | goto err; | |
627 | ||
628 | r = dsicm_get_id(ddata, &id1, &id2, &id3); | |
629 | if (r) | |
630 | goto err; | |
631 | ||
632 | r = dsicm_dcs_write_1(ddata, DCS_BRIGHTNESS, 0xff); | |
633 | if (r) | |
634 | goto err; | |
635 | ||
636 | r = dsicm_dcs_write_1(ddata, DCS_CTRL_DISPLAY, | |
637 | (1<<2) | (1<<5)); /* BL | BCTRL */ | |
638 | if (r) | |
639 | goto err; | |
640 | ||
641 | r = dsicm_dcs_write_1(ddata, MIPI_DCS_SET_PIXEL_FORMAT, | |
642 | MIPI_DCS_PIXEL_FMT_24BIT); | |
643 | if (r) | |
644 | goto err; | |
645 | ||
646 | r = dsicm_dcs_write_0(ddata, MIPI_DCS_SET_DISPLAY_ON); | |
647 | if (r) | |
648 | goto err; | |
649 | ||
650 | r = _dsicm_enable_te(ddata, ddata->te_enabled); | |
651 | if (r) | |
652 | goto err; | |
653 | ||
654 | r = in->ops.dsi->enable_video_output(in, ddata->channel); | |
655 | if (r) | |
656 | goto err; | |
657 | ||
658 | ddata->enabled = 1; | |
659 | ||
660 | if (!ddata->intro_printed) { | |
661 | dev_info(&ddata->pdev->dev, "panel revision %02x.%02x.%02x\n", | |
662 | id1, id2, id3); | |
663 | ddata->intro_printed = true; | |
664 | } | |
665 | ||
666 | in->ops.dsi->enable_hs(in, ddata->channel, true); | |
667 | ||
668 | return 0; | |
669 | err: | |
670 | dev_err(&ddata->pdev->dev, "error while enabling panel, issuing HW reset\n"); | |
671 | ||
672 | dsicm_hw_reset(ddata); | |
673 | ||
674 | in->ops.dsi->disable(in, true, false); | |
675 | err0: | |
676 | return r; | |
677 | } | |
678 | ||
679 | static void dsicm_power_off(struct panel_drv_data *ddata) | |
680 | { | |
681 | struct omap_dss_device *in = ddata->in; | |
682 | int r; | |
683 | ||
684 | in->ops.dsi->disable_video_output(in, ddata->channel); | |
685 | ||
686 | r = dsicm_dcs_write_0(ddata, MIPI_DCS_SET_DISPLAY_OFF); | |
687 | if (!r) | |
688 | r = dsicm_sleep_in(ddata); | |
689 | ||
690 | if (r) { | |
691 | dev_err(&ddata->pdev->dev, | |
692 | "error disabling panel, issuing HW reset\n"); | |
693 | dsicm_hw_reset(ddata); | |
694 | } | |
695 | ||
696 | in->ops.dsi->disable(in, true, false); | |
697 | ||
698 | ddata->enabled = 0; | |
699 | } | |
700 | ||
701 | static int dsicm_panel_reset(struct panel_drv_data *ddata) | |
702 | { | |
703 | dev_err(&ddata->pdev->dev, "performing LCD reset\n"); | |
704 | ||
705 | dsicm_power_off(ddata); | |
706 | dsicm_hw_reset(ddata); | |
707 | return dsicm_power_on(ddata); | |
708 | } | |
709 | ||
710 | static int dsicm_connect(struct omap_dss_device *dssdev) | |
711 | { | |
712 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
713 | struct omap_dss_device *in = ddata->in; | |
714 | struct device *dev = &ddata->pdev->dev; | |
715 | int r; | |
716 | ||
717 | if (omapdss_device_is_connected(dssdev)) | |
718 | return 0; | |
719 | ||
720 | r = in->ops.dsi->connect(in, dssdev); | |
721 | if (r) { | |
722 | dev_err(dev, "Failed to connect to video source\n"); | |
723 | return r; | |
724 | } | |
725 | ||
726 | r = in->ops.dsi->request_vc(ddata->in, &ddata->channel); | |
727 | if (r) { | |
728 | dev_err(dev, "failed to get virtual channel\n"); | |
729 | goto err_req_vc; | |
730 | } | |
731 | ||
732 | r = in->ops.dsi->set_vc_id(ddata->in, ddata->channel, TCH); | |
733 | if (r) { | |
734 | dev_err(dev, "failed to set VC_ID\n"); | |
735 | goto err_vc_id; | |
736 | } | |
737 | ||
738 | return 0; | |
739 | ||
740 | err_vc_id: | |
741 | in->ops.dsi->release_vc(ddata->in, ddata->channel); | |
742 | err_req_vc: | |
743 | in->ops.dsi->disconnect(in, dssdev); | |
744 | return r; | |
745 | } | |
746 | ||
747 | static void dsicm_disconnect(struct omap_dss_device *dssdev) | |
748 | { | |
749 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
750 | struct omap_dss_device *in = ddata->in; | |
751 | ||
752 | if (!omapdss_device_is_connected(dssdev)) | |
753 | return; | |
754 | ||
755 | in->ops.dsi->release_vc(in, ddata->channel); | |
756 | in->ops.dsi->disconnect(in, dssdev); | |
757 | } | |
758 | ||
759 | static int dsicm_enable(struct omap_dss_device *dssdev) | |
760 | { | |
761 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
762 | struct omap_dss_device *in = ddata->in; | |
763 | int r; | |
764 | ||
765 | dev_dbg(&ddata->pdev->dev, "enable\n"); | |
766 | ||
767 | mutex_lock(&ddata->lock); | |
768 | ||
769 | if (!omapdss_device_is_connected(dssdev)) { | |
770 | r = -ENODEV; | |
771 | goto err; | |
772 | } | |
773 | ||
774 | if (omapdss_device_is_enabled(dssdev)) { | |
775 | r = 0; | |
776 | goto err; | |
777 | } | |
778 | ||
779 | in->ops.dsi->bus_lock(in); | |
780 | ||
781 | r = dsicm_power_on(ddata); | |
782 | ||
783 | in->ops.dsi->bus_unlock(in); | |
784 | ||
785 | if (r) | |
786 | goto err; | |
787 | ||
788 | dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; | |
789 | ||
790 | mutex_unlock(&ddata->lock); | |
791 | ||
792 | return 0; | |
793 | err: | |
794 | dev_dbg(&ddata->pdev->dev, "enable failed\n"); | |
795 | mutex_unlock(&ddata->lock); | |
796 | return r; | |
797 | } | |
798 | ||
799 | static void dsicm_disable(struct omap_dss_device *dssdev) | |
800 | { | |
801 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
802 | struct omap_dss_device *in = ddata->in; | |
803 | int r; | |
804 | ||
805 | dev_dbg(&ddata->pdev->dev, "disable\n"); | |
806 | ||
807 | mutex_lock(&ddata->lock); | |
808 | ||
809 | dsicm_cancel_ulps_work(ddata); | |
810 | ||
811 | in->ops.dsi->bus_lock(in); | |
812 | ||
813 | if (omapdss_device_is_enabled(dssdev)) { | |
814 | r = dsicm_wake_up(ddata); | |
815 | if (!r) | |
816 | dsicm_power_off(ddata); | |
817 | } | |
818 | ||
819 | in->ops.dsi->bus_unlock(in); | |
820 | ||
821 | dssdev->state = OMAP_DSS_DISPLAY_DISABLED; | |
822 | ||
823 | mutex_unlock(&ddata->lock); | |
824 | } | |
825 | ||
826 | static void dsicm_framedone_cb(int err, void *data) | |
827 | { | |
828 | struct panel_drv_data *ddata = data; | |
829 | struct omap_dss_device *in = ddata->in; | |
830 | ||
831 | dev_dbg(&ddata->pdev->dev, "framedone, err %d\n", err); | |
832 | in->ops.dsi->bus_unlock(ddata->in); | |
833 | } | |
834 | ||
835 | static irqreturn_t dsicm_te_isr(int irq, void *data) | |
836 | { | |
837 | struct panel_drv_data *ddata = data; | |
838 | struct omap_dss_device *in = ddata->in; | |
839 | int old; | |
840 | int r; | |
841 | ||
842 | old = atomic_cmpxchg(&ddata->do_update, 1, 0); | |
843 | ||
844 | if (old) { | |
845 | cancel_delayed_work(&ddata->te_timeout_work); | |
846 | ||
847 | r = in->ops.dsi->update(in, ddata->channel, dsicm_framedone_cb, | |
848 | ddata); | |
849 | if (r) | |
850 | goto err; | |
851 | } | |
852 | ||
853 | return IRQ_HANDLED; | |
854 | err: | |
855 | dev_err(&ddata->pdev->dev, "start update failed\n"); | |
856 | in->ops.dsi->bus_unlock(in); | |
857 | return IRQ_HANDLED; | |
858 | } | |
859 | ||
860 | static void dsicm_te_timeout_work_callback(struct work_struct *work) | |
861 | { | |
862 | struct panel_drv_data *ddata = container_of(work, struct panel_drv_data, | |
863 | te_timeout_work.work); | |
864 | struct omap_dss_device *in = ddata->in; | |
865 | ||
866 | dev_err(&ddata->pdev->dev, "TE not received for 250ms!\n"); | |
867 | ||
868 | atomic_set(&ddata->do_update, 0); | |
869 | in->ops.dsi->bus_unlock(in); | |
870 | } | |
871 | ||
872 | static int dsicm_update(struct omap_dss_device *dssdev, | |
873 | u16 x, u16 y, u16 w, u16 h) | |
874 | { | |
875 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
876 | struct omap_dss_device *in = ddata->in; | |
877 | int r; | |
878 | ||
879 | dev_dbg(&ddata->pdev->dev, "update %d, %d, %d x %d\n", x, y, w, h); | |
880 | ||
881 | mutex_lock(&ddata->lock); | |
882 | in->ops.dsi->bus_lock(in); | |
883 | ||
884 | r = dsicm_wake_up(ddata); | |
885 | if (r) | |
886 | goto err; | |
887 | ||
888 | if (!ddata->enabled) { | |
889 | r = 0; | |
890 | goto err; | |
891 | } | |
892 | ||
893 | /* XXX no need to send this every frame, but dsi break if not done */ | |
894 | r = dsicm_set_update_window(ddata, 0, 0, | |
895 | dssdev->panel.timings.x_res, | |
896 | dssdev->panel.timings.y_res); | |
897 | if (r) | |
898 | goto err; | |
899 | ||
900 | if (ddata->te_enabled && gpio_is_valid(ddata->ext_te_gpio)) { | |
901 | schedule_delayed_work(&ddata->te_timeout_work, | |
902 | msecs_to_jiffies(250)); | |
903 | atomic_set(&ddata->do_update, 1); | |
904 | } else { | |
905 | r = in->ops.dsi->update(in, ddata->channel, dsicm_framedone_cb, | |
906 | ddata); | |
907 | if (r) | |
908 | goto err; | |
909 | } | |
910 | ||
911 | /* note: no bus_unlock here. unlock is in framedone_cb */ | |
912 | mutex_unlock(&ddata->lock); | |
913 | return 0; | |
914 | err: | |
915 | in->ops.dsi->bus_unlock(in); | |
916 | mutex_unlock(&ddata->lock); | |
917 | return r; | |
918 | } | |
919 | ||
920 | static int dsicm_sync(struct omap_dss_device *dssdev) | |
921 | { | |
922 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
923 | struct omap_dss_device *in = ddata->in; | |
924 | ||
925 | dev_dbg(&ddata->pdev->dev, "sync\n"); | |
926 | ||
927 | mutex_lock(&ddata->lock); | |
928 | in->ops.dsi->bus_lock(in); | |
929 | in->ops.dsi->bus_unlock(in); | |
930 | mutex_unlock(&ddata->lock); | |
931 | ||
932 | dev_dbg(&ddata->pdev->dev, "sync done\n"); | |
933 | ||
934 | return 0; | |
935 | } | |
936 | ||
937 | static int _dsicm_enable_te(struct panel_drv_data *ddata, bool enable) | |
938 | { | |
939 | struct omap_dss_device *in = ddata->in; | |
940 | int r; | |
941 | ||
942 | if (enable) | |
943 | r = dsicm_dcs_write_1(ddata, MIPI_DCS_SET_TEAR_ON, 0); | |
944 | else | |
945 | r = dsicm_dcs_write_0(ddata, MIPI_DCS_SET_TEAR_OFF); | |
946 | ||
947 | if (!gpio_is_valid(ddata->ext_te_gpio)) | |
948 | in->ops.dsi->enable_te(in, enable); | |
949 | ||
950 | /* possible panel bug */ | |
951 | msleep(100); | |
952 | ||
953 | return r; | |
954 | } | |
955 | ||
956 | static int dsicm_enable_te(struct omap_dss_device *dssdev, bool enable) | |
957 | { | |
958 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
959 | struct omap_dss_device *in = ddata->in; | |
960 | int r; | |
961 | ||
962 | mutex_lock(&ddata->lock); | |
963 | ||
964 | if (ddata->te_enabled == enable) | |
965 | goto end; | |
966 | ||
967 | in->ops.dsi->bus_lock(in); | |
968 | ||
969 | if (ddata->enabled) { | |
970 | r = dsicm_wake_up(ddata); | |
971 | if (r) | |
972 | goto err; | |
973 | ||
974 | r = _dsicm_enable_te(ddata, enable); | |
975 | if (r) | |
976 | goto err; | |
977 | } | |
978 | ||
979 | ddata->te_enabled = enable; | |
980 | ||
981 | in->ops.dsi->bus_unlock(in); | |
982 | end: | |
983 | mutex_unlock(&ddata->lock); | |
984 | ||
985 | return 0; | |
986 | err: | |
987 | in->ops.dsi->bus_unlock(in); | |
988 | mutex_unlock(&ddata->lock); | |
989 | ||
990 | return r; | |
991 | } | |
992 | ||
993 | static int dsicm_get_te(struct omap_dss_device *dssdev) | |
994 | { | |
995 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
996 | int r; | |
997 | ||
998 | mutex_lock(&ddata->lock); | |
999 | r = ddata->te_enabled; | |
1000 | mutex_unlock(&ddata->lock); | |
1001 | ||
1002 | return r; | |
1003 | } | |
1004 | ||
1005 | static int dsicm_memory_read(struct omap_dss_device *dssdev, | |
1006 | void *buf, size_t size, | |
1007 | u16 x, u16 y, u16 w, u16 h) | |
1008 | { | |
1009 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
1010 | struct omap_dss_device *in = ddata->in; | |
1011 | int r; | |
1012 | int first = 1; | |
1013 | int plen; | |
1014 | unsigned buf_used = 0; | |
1015 | ||
1016 | if (size < w * h * 3) | |
1017 | return -ENOMEM; | |
1018 | ||
1019 | mutex_lock(&ddata->lock); | |
1020 | ||
1021 | if (!ddata->enabled) { | |
1022 | r = -ENODEV; | |
1023 | goto err1; | |
1024 | } | |
1025 | ||
1026 | size = min(w * h * 3, | |
1027 | dssdev->panel.timings.x_res * | |
1028 | dssdev->panel.timings.y_res * 3); | |
1029 | ||
1030 | in->ops.dsi->bus_lock(in); | |
1031 | ||
1032 | r = dsicm_wake_up(ddata); | |
1033 | if (r) | |
1034 | goto err2; | |
1035 | ||
1036 | /* plen 1 or 2 goes into short packet. until checksum error is fixed, | |
1037 | * use short packets. plen 32 works, but bigger packets seem to cause | |
1038 | * an error. */ | |
1039 | if (size % 2) | |
1040 | plen = 1; | |
1041 | else | |
1042 | plen = 2; | |
1043 | ||
1044 | dsicm_set_update_window(ddata, x, y, w, h); | |
1045 | ||
1046 | r = in->ops.dsi->set_max_rx_packet_size(in, ddata->channel, plen); | |
1047 | if (r) | |
1048 | goto err2; | |
1049 | ||
1050 | while (buf_used < size) { | |
1051 | u8 dcs_cmd = first ? 0x2e : 0x3e; | |
1052 | first = 0; | |
1053 | ||
1054 | r = in->ops.dsi->dcs_read(in, ddata->channel, dcs_cmd, | |
1055 | buf + buf_used, size - buf_used); | |
1056 | ||
1057 | if (r < 0) { | |
1058 | dev_err(dssdev->dev, "read error\n"); | |
1059 | goto err3; | |
1060 | } | |
1061 | ||
1062 | buf_used += r; | |
1063 | ||
1064 | if (r < plen) { | |
1065 | dev_err(&ddata->pdev->dev, "short read\n"); | |
1066 | break; | |
1067 | } | |
1068 | ||
1069 | if (signal_pending(current)) { | |
1070 | dev_err(&ddata->pdev->dev, "signal pending, " | |
1071 | "aborting memory read\n"); | |
1072 | r = -ERESTARTSYS; | |
1073 | goto err3; | |
1074 | } | |
1075 | } | |
1076 | ||
1077 | r = buf_used; | |
1078 | ||
1079 | err3: | |
1080 | in->ops.dsi->set_max_rx_packet_size(in, ddata->channel, 1); | |
1081 | err2: | |
1082 | in->ops.dsi->bus_unlock(in); | |
1083 | err1: | |
1084 | mutex_unlock(&ddata->lock); | |
1085 | return r; | |
1086 | } | |
1087 | ||
1088 | static void dsicm_ulps_work(struct work_struct *work) | |
1089 | { | |
1090 | struct panel_drv_data *ddata = container_of(work, struct panel_drv_data, | |
1091 | ulps_work.work); | |
1092 | struct omap_dss_device *dssdev = &ddata->dssdev; | |
1093 | struct omap_dss_device *in = ddata->in; | |
1094 | ||
1095 | mutex_lock(&ddata->lock); | |
1096 | ||
1097 | if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE || !ddata->enabled) { | |
1098 | mutex_unlock(&ddata->lock); | |
1099 | return; | |
1100 | } | |
1101 | ||
1102 | in->ops.dsi->bus_lock(in); | |
1103 | ||
1104 | dsicm_enter_ulps(ddata); | |
1105 | ||
1106 | in->ops.dsi->bus_unlock(in); | |
1107 | mutex_unlock(&ddata->lock); | |
1108 | } | |
1109 | ||
1110 | static struct omap_dss_driver dsicm_ops = { | |
1111 | .connect = dsicm_connect, | |
1112 | .disconnect = dsicm_disconnect, | |
1113 | ||
1114 | .enable = dsicm_enable, | |
1115 | .disable = dsicm_disable, | |
1116 | ||
1117 | .update = dsicm_update, | |
1118 | .sync = dsicm_sync, | |
1119 | ||
1120 | .get_resolution = dsicm_get_resolution, | |
1121 | .get_recommended_bpp = omapdss_default_get_recommended_bpp, | |
1122 | ||
1123 | .enable_te = dsicm_enable_te, | |
1124 | .get_te = dsicm_get_te, | |
1125 | ||
1126 | .memory_read = dsicm_memory_read, | |
1127 | }; | |
1128 | ||
cdeeaca2 TV |
1129 | static int dsicm_probe_of(struct platform_device *pdev) |
1130 | { | |
1131 | struct device_node *node = pdev->dev.of_node; | |
1132 | struct panel_drv_data *ddata = platform_get_drvdata(pdev); | |
1133 | struct omap_dss_device *in; | |
1134 | int gpio; | |
1135 | ||
1136 | gpio = of_get_named_gpio(node, "reset-gpios", 0); | |
1137 | if (!gpio_is_valid(gpio)) { | |
1138 | dev_err(&pdev->dev, "failed to parse reset gpio\n"); | |
1139 | return gpio; | |
1140 | } | |
1141 | ddata->reset_gpio = gpio; | |
1142 | ||
1143 | gpio = of_get_named_gpio(node, "te-gpios", 0); | |
1144 | if (gpio_is_valid(gpio) || gpio == -ENOENT) { | |
1145 | ddata->ext_te_gpio = gpio; | |
1146 | } else { | |
1147 | dev_err(&pdev->dev, "failed to parse TE gpio\n"); | |
1148 | return gpio; | |
1149 | } | |
1150 | ||
1151 | in = omapdss_of_find_source_for_first_ep(node); | |
1152 | if (IS_ERR(in)) { | |
1153 | dev_err(&pdev->dev, "failed to find video source\n"); | |
1154 | return PTR_ERR(in); | |
1155 | } | |
1156 | ||
1157 | ddata->in = in; | |
1158 | ||
1159 | /* TODO: ulps, backlight */ | |
1160 | ||
1161 | return 0; | |
1162 | } | |
1163 | ||
dbc23840 TV |
1164 | static int dsicm_probe(struct platform_device *pdev) |
1165 | { | |
1166 | struct backlight_properties props; | |
1167 | struct panel_drv_data *ddata; | |
1168 | struct backlight_device *bldev = NULL; | |
1169 | struct device *dev = &pdev->dev; | |
1170 | struct omap_dss_device *dssdev; | |
1171 | int r; | |
1172 | ||
1173 | dev_dbg(dev, "probe\n"); | |
1174 | ||
1175 | ddata = devm_kzalloc(dev, sizeof(*ddata), GFP_KERNEL); | |
1176 | if (!ddata) | |
1177 | return -ENOMEM; | |
1178 | ||
1179 | platform_set_drvdata(pdev, ddata); | |
1180 | ddata->pdev = pdev; | |
1181 | ||
55f6fca3 | 1182 | if (!pdev->dev.of_node) |
dbc23840 | 1183 | return -ENODEV; |
3d1f0f59 TV |
1184 | |
1185 | r = dsicm_probe_of(pdev); | |
1186 | if (r) | |
1187 | return r; | |
dbc23840 TV |
1188 | |
1189 | ddata->timings.x_res = 864; | |
1190 | ddata->timings.y_res = 480; | |
d8d78941 | 1191 | ddata->timings.pixelclock = 864 * 480 * 60; |
dbc23840 TV |
1192 | |
1193 | dssdev = &ddata->dssdev; | |
1194 | dssdev->dev = dev; | |
1195 | dssdev->driver = &dsicm_ops; | |
1196 | dssdev->panel.timings = ddata->timings; | |
1197 | dssdev->type = OMAP_DISPLAY_TYPE_DSI; | |
1198 | dssdev->owner = THIS_MODULE; | |
1199 | ||
1200 | dssdev->panel.dsi_pix_fmt = OMAP_DSS_DSI_FMT_RGB888; | |
1201 | dssdev->caps = OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE | | |
1202 | OMAP_DSS_DISPLAY_CAP_TEAR_ELIM; | |
1203 | ||
1204 | r = omapdss_register_display(dssdev); | |
1205 | if (r) { | |
1206 | dev_err(dev, "Failed to register panel\n"); | |
1207 | goto err_reg; | |
1208 | } | |
1209 | ||
1210 | mutex_init(&ddata->lock); | |
1211 | ||
1212 | atomic_set(&ddata->do_update, 0); | |
1213 | ||
1214 | if (gpio_is_valid(ddata->reset_gpio)) { | |
1215 | r = devm_gpio_request_one(dev, ddata->reset_gpio, | |
1216 | GPIOF_OUT_INIT_LOW, "taal rst"); | |
1217 | if (r) { | |
1218 | dev_err(dev, "failed to request reset gpio\n"); | |
1219 | return r; | |
1220 | } | |
1221 | } | |
1222 | ||
1223 | if (gpio_is_valid(ddata->ext_te_gpio)) { | |
1224 | r = devm_gpio_request_one(dev, ddata->ext_te_gpio, | |
1225 | GPIOF_IN, "taal irq"); | |
1226 | if (r) { | |
1227 | dev_err(dev, "GPIO request failed\n"); | |
1228 | return r; | |
1229 | } | |
1230 | ||
1231 | r = devm_request_irq(dev, gpio_to_irq(ddata->ext_te_gpio), | |
1232 | dsicm_te_isr, | |
1233 | IRQF_TRIGGER_RISING, | |
1234 | "taal vsync", ddata); | |
1235 | ||
1236 | if (r) { | |
1237 | dev_err(dev, "IRQ request failed\n"); | |
1238 | return r; | |
1239 | } | |
1240 | ||
1241 | INIT_DEFERRABLE_WORK(&ddata->te_timeout_work, | |
1242 | dsicm_te_timeout_work_callback); | |
1243 | ||
1244 | dev_dbg(dev, "Using GPIO TE\n"); | |
1245 | } | |
1246 | ||
1247 | ddata->workqueue = create_singlethread_workqueue("dsicm_wq"); | |
1248 | if (ddata->workqueue == NULL) { | |
1249 | dev_err(dev, "can't create workqueue\n"); | |
1250 | return -ENOMEM; | |
1251 | } | |
1252 | INIT_DELAYED_WORK(&ddata->ulps_work, dsicm_ulps_work); | |
1253 | ||
1254 | dsicm_hw_reset(ddata); | |
1255 | ||
1256 | if (ddata->use_dsi_backlight) { | |
1257 | memset(&props, 0, sizeof(struct backlight_properties)); | |
1258 | props.max_brightness = 255; | |
1259 | ||
1260 | props.type = BACKLIGHT_RAW; | |
1261 | bldev = backlight_device_register(dev_name(dev), | |
1262 | dev, ddata, &dsicm_bl_ops, &props); | |
1263 | if (IS_ERR(bldev)) { | |
1264 | r = PTR_ERR(bldev); | |
1265 | goto err_bl; | |
1266 | } | |
1267 | ||
1268 | ddata->bldev = bldev; | |
1269 | ||
1270 | bldev->props.fb_blank = FB_BLANK_UNBLANK; | |
1271 | bldev->props.power = FB_BLANK_UNBLANK; | |
1272 | bldev->props.brightness = 255; | |
1273 | ||
1274 | dsicm_bl_update_status(bldev); | |
1275 | } | |
1276 | ||
1277 | r = sysfs_create_group(&dev->kobj, &dsicm_attr_group); | |
1278 | if (r) { | |
1279 | dev_err(dev, "failed to create sysfs files\n"); | |
1280 | goto err_sysfs_create; | |
1281 | } | |
1282 | ||
1283 | return 0; | |
1284 | ||
1285 | err_sysfs_create: | |
76e4c327 | 1286 | backlight_device_unregister(bldev); |
dbc23840 TV |
1287 | err_bl: |
1288 | destroy_workqueue(ddata->workqueue); | |
1289 | err_reg: | |
1290 | return r; | |
1291 | } | |
1292 | ||
1293 | static int __exit dsicm_remove(struct platform_device *pdev) | |
1294 | { | |
1295 | struct panel_drv_data *ddata = platform_get_drvdata(pdev); | |
1296 | struct omap_dss_device *dssdev = &ddata->dssdev; | |
1297 | struct backlight_device *bldev; | |
1298 | ||
1299 | dev_dbg(&pdev->dev, "remove\n"); | |
1300 | ||
1301 | omapdss_unregister_display(dssdev); | |
1302 | ||
1303 | dsicm_disable(dssdev); | |
1304 | dsicm_disconnect(dssdev); | |
1305 | ||
1306 | sysfs_remove_group(&pdev->dev.kobj, &dsicm_attr_group); | |
1307 | ||
1308 | bldev = ddata->bldev; | |
1309 | if (bldev != NULL) { | |
1310 | bldev->props.power = FB_BLANK_POWERDOWN; | |
1311 | dsicm_bl_update_status(bldev); | |
1312 | backlight_device_unregister(bldev); | |
1313 | } | |
1314 | ||
1315 | omap_dss_put_device(ddata->in); | |
1316 | ||
1317 | dsicm_cancel_ulps_work(ddata); | |
1318 | destroy_workqueue(ddata->workqueue); | |
1319 | ||
1320 | /* reset, to be sure that the panel is in a valid state */ | |
1321 | dsicm_hw_reset(ddata); | |
1322 | ||
1323 | return 0; | |
1324 | } | |
1325 | ||
cdeeaca2 TV |
1326 | static const struct of_device_id dsicm_of_match[] = { |
1327 | { .compatible = "omapdss,panel-dsi-cm", }, | |
1328 | {}, | |
1329 | }; | |
1330 | ||
1331 | MODULE_DEVICE_TABLE(of, dsicm_of_match); | |
1332 | ||
dbc23840 TV |
1333 | static struct platform_driver dsicm_driver = { |
1334 | .probe = dsicm_probe, | |
1335 | .remove = __exit_p(dsicm_remove), | |
1336 | .driver = { | |
1337 | .name = "panel-dsi-cm", | |
cdeeaca2 | 1338 | .of_match_table = dsicm_of_match, |
422ccbd5 | 1339 | .suppress_bind_attrs = true, |
dbc23840 TV |
1340 | }, |
1341 | }; | |
1342 | ||
1343 | module_platform_driver(dsicm_driver); | |
1344 | ||
1345 | MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>"); | |
1346 | MODULE_DESCRIPTION("Generic DSI Command Mode Panel Driver"); | |
1347 | MODULE_LICENSE("GPL"); |