Commit | Line | Data |
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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> | |
16 | #include <linux/fb.h> | |
d0196c8d | 17 | #include <linux/gpio/consumer.h> |
dbc23840 TV |
18 | #include <linux/interrupt.h> |
19 | #include <linux/jiffies.h> | |
20 | #include <linux/module.h> | |
21 | #include <linux/platform_device.h> | |
22 | #include <linux/sched.h> | |
23 | #include <linux/slab.h> | |
24 | #include <linux/workqueue.h> | |
cdeeaca2 TV |
25 | #include <linux/of_device.h> |
26 | #include <linux/of_gpio.h> | |
dbc23840 TV |
27 | |
28 | #include <video/omapdss.h> | |
29 | #include <video/omap-panel-data.h> | |
30 | #include <video/mipi_display.h> | |
31 | ||
32 | /* DSI Virtual channel. Hardcoded for now. */ | |
33 | #define TCH 0 | |
34 | ||
35 | #define DCS_READ_NUM_ERRORS 0x05 | |
36 | #define DCS_BRIGHTNESS 0x51 | |
37 | #define DCS_CTRL_DISPLAY 0x53 | |
38 | #define DCS_GET_ID1 0xda | |
39 | #define DCS_GET_ID2 0xdb | |
40 | #define DCS_GET_ID3 0xdc | |
41 | ||
42 | struct panel_drv_data { | |
43 | struct omap_dss_device dssdev; | |
44 | struct omap_dss_device *in; | |
45 | ||
46 | struct omap_video_timings timings; | |
47 | ||
48 | struct platform_device *pdev; | |
49 | ||
50 | struct mutex lock; | |
51 | ||
52 | struct backlight_device *bldev; | |
53 | ||
54 | unsigned long hw_guard_end; /* next value of jiffies when we can | |
55 | * issue the next sleep in/out command | |
56 | */ | |
57 | unsigned long hw_guard_wait; /* max guard time in jiffies */ | |
58 | ||
59 | /* panel HW configuration from DT or platform data */ | |
60 | int reset_gpio; | |
61 | int ext_te_gpio; | |
62 | ||
63 | bool use_dsi_backlight; | |
64 | ||
65 | struct omap_dsi_pin_config pin_config; | |
66 | ||
67 | /* runtime variables */ | |
68 | bool enabled; | |
69 | ||
70 | bool te_enabled; | |
71 | ||
72 | atomic_t do_update; | |
73 | int channel; | |
74 | ||
75 | struct delayed_work te_timeout_work; | |
76 | ||
77 | bool intro_printed; | |
78 | ||
79 | struct workqueue_struct *workqueue; | |
80 | ||
81 | bool ulps_enabled; | |
82 | unsigned ulps_timeout; | |
83 | struct delayed_work ulps_work; | |
84 | }; | |
85 | ||
86 | #define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev) | |
87 | ||
88 | static irqreturn_t dsicm_te_isr(int irq, void *data); | |
89 | static void dsicm_te_timeout_work_callback(struct work_struct *work); | |
90 | static int _dsicm_enable_te(struct panel_drv_data *ddata, bool enable); | |
91 | ||
92 | static int dsicm_panel_reset(struct panel_drv_data *ddata); | |
93 | ||
94 | static void dsicm_ulps_work(struct work_struct *work); | |
95 | ||
96 | static void hw_guard_start(struct panel_drv_data *ddata, int guard_msec) | |
97 | { | |
98 | ddata->hw_guard_wait = msecs_to_jiffies(guard_msec); | |
99 | ddata->hw_guard_end = jiffies + ddata->hw_guard_wait; | |
100 | } | |
101 | ||
102 | static void hw_guard_wait(struct panel_drv_data *ddata) | |
103 | { | |
104 | unsigned long wait = ddata->hw_guard_end - jiffies; | |
105 | ||
106 | if ((long)wait > 0 && wait <= ddata->hw_guard_wait) { | |
107 | set_current_state(TASK_UNINTERRUPTIBLE); | |
108 | schedule_timeout(wait); | |
109 | } | |
110 | } | |
111 | ||
112 | static int dsicm_dcs_read_1(struct panel_drv_data *ddata, u8 dcs_cmd, u8 *data) | |
113 | { | |
114 | struct omap_dss_device *in = ddata->in; | |
115 | int r; | |
116 | u8 buf[1]; | |
117 | ||
118 | r = in->ops.dsi->dcs_read(in, ddata->channel, dcs_cmd, buf, 1); | |
119 | ||
120 | if (r < 0) | |
121 | return r; | |
122 | ||
123 | *data = buf[0]; | |
124 | ||
125 | return 0; | |
126 | } | |
127 | ||
128 | static int dsicm_dcs_write_0(struct panel_drv_data *ddata, u8 dcs_cmd) | |
129 | { | |
130 | struct omap_dss_device *in = ddata->in; | |
131 | return in->ops.dsi->dcs_write(in, ddata->channel, &dcs_cmd, 1); | |
132 | } | |
133 | ||
134 | static int dsicm_dcs_write_1(struct panel_drv_data *ddata, u8 dcs_cmd, u8 param) | |
135 | { | |
136 | struct omap_dss_device *in = ddata->in; | |
137 | u8 buf[2] = { dcs_cmd, param }; | |
138 | ||
139 | return in->ops.dsi->dcs_write(in, ddata->channel, buf, 2); | |
140 | } | |
141 | ||
142 | static int dsicm_sleep_in(struct panel_drv_data *ddata) | |
143 | ||
144 | { | |
145 | struct omap_dss_device *in = ddata->in; | |
146 | u8 cmd; | |
147 | int r; | |
148 | ||
149 | hw_guard_wait(ddata); | |
150 | ||
151 | cmd = MIPI_DCS_ENTER_SLEEP_MODE; | |
152 | r = in->ops.dsi->dcs_write_nosync(in, ddata->channel, &cmd, 1); | |
153 | if (r) | |
154 | return r; | |
155 | ||
156 | hw_guard_start(ddata, 120); | |
157 | ||
158 | usleep_range(5000, 10000); | |
159 | ||
160 | return 0; | |
161 | } | |
162 | ||
163 | static int dsicm_sleep_out(struct panel_drv_data *ddata) | |
164 | { | |
165 | int r; | |
166 | ||
167 | hw_guard_wait(ddata); | |
168 | ||
169 | r = dsicm_dcs_write_0(ddata, MIPI_DCS_EXIT_SLEEP_MODE); | |
170 | if (r) | |
171 | return r; | |
172 | ||
173 | hw_guard_start(ddata, 120); | |
174 | ||
175 | usleep_range(5000, 10000); | |
176 | ||
177 | return 0; | |
178 | } | |
179 | ||
180 | static int dsicm_get_id(struct panel_drv_data *ddata, u8 *id1, u8 *id2, u8 *id3) | |
181 | { | |
182 | int r; | |
183 | ||
184 | r = dsicm_dcs_read_1(ddata, DCS_GET_ID1, id1); | |
185 | if (r) | |
186 | return r; | |
187 | r = dsicm_dcs_read_1(ddata, DCS_GET_ID2, id2); | |
188 | if (r) | |
189 | return r; | |
190 | r = dsicm_dcs_read_1(ddata, DCS_GET_ID3, id3); | |
191 | if (r) | |
192 | return r; | |
193 | ||
194 | return 0; | |
195 | } | |
196 | ||
197 | static int dsicm_set_update_window(struct panel_drv_data *ddata, | |
198 | u16 x, u16 y, u16 w, u16 h) | |
199 | { | |
200 | struct omap_dss_device *in = ddata->in; | |
201 | int r; | |
202 | u16 x1 = x; | |
203 | u16 x2 = x + w - 1; | |
204 | u16 y1 = y; | |
205 | u16 y2 = y + h - 1; | |
206 | ||
207 | u8 buf[5]; | |
208 | buf[0] = MIPI_DCS_SET_COLUMN_ADDRESS; | |
209 | buf[1] = (x1 >> 8) & 0xff; | |
210 | buf[2] = (x1 >> 0) & 0xff; | |
211 | buf[3] = (x2 >> 8) & 0xff; | |
212 | buf[4] = (x2 >> 0) & 0xff; | |
213 | ||
214 | r = in->ops.dsi->dcs_write_nosync(in, ddata->channel, buf, sizeof(buf)); | |
215 | if (r) | |
216 | return r; | |
217 | ||
218 | buf[0] = MIPI_DCS_SET_PAGE_ADDRESS; | |
219 | buf[1] = (y1 >> 8) & 0xff; | |
220 | buf[2] = (y1 >> 0) & 0xff; | |
221 | buf[3] = (y2 >> 8) & 0xff; | |
222 | buf[4] = (y2 >> 0) & 0xff; | |
223 | ||
224 | r = in->ops.dsi->dcs_write_nosync(in, ddata->channel, buf, sizeof(buf)); | |
225 | if (r) | |
226 | return r; | |
227 | ||
228 | in->ops.dsi->bta_sync(in, ddata->channel); | |
229 | ||
230 | return r; | |
231 | } | |
232 | ||
233 | static void dsicm_queue_ulps_work(struct panel_drv_data *ddata) | |
234 | { | |
235 | if (ddata->ulps_timeout > 0) | |
236 | queue_delayed_work(ddata->workqueue, &ddata->ulps_work, | |
237 | msecs_to_jiffies(ddata->ulps_timeout)); | |
238 | } | |
239 | ||
240 | static void dsicm_cancel_ulps_work(struct panel_drv_data *ddata) | |
241 | { | |
242 | cancel_delayed_work(&ddata->ulps_work); | |
243 | } | |
244 | ||
245 | static int dsicm_enter_ulps(struct panel_drv_data *ddata) | |
246 | { | |
247 | struct omap_dss_device *in = ddata->in; | |
248 | int r; | |
249 | ||
250 | if (ddata->ulps_enabled) | |
251 | return 0; | |
252 | ||
253 | dsicm_cancel_ulps_work(ddata); | |
254 | ||
255 | r = _dsicm_enable_te(ddata, false); | |
256 | if (r) | |
257 | goto err; | |
258 | ||
259 | if (gpio_is_valid(ddata->ext_te_gpio)) | |
260 | disable_irq(gpio_to_irq(ddata->ext_te_gpio)); | |
261 | ||
262 | in->ops.dsi->disable(in, false, true); | |
263 | ||
264 | ddata->ulps_enabled = true; | |
265 | ||
266 | return 0; | |
267 | ||
268 | err: | |
269 | dev_err(&ddata->pdev->dev, "enter ULPS failed"); | |
270 | dsicm_panel_reset(ddata); | |
271 | ||
272 | ddata->ulps_enabled = false; | |
273 | ||
274 | dsicm_queue_ulps_work(ddata); | |
275 | ||
276 | return r; | |
277 | } | |
278 | ||
279 | static int dsicm_exit_ulps(struct panel_drv_data *ddata) | |
280 | { | |
281 | struct omap_dss_device *in = ddata->in; | |
282 | int r; | |
283 | ||
284 | if (!ddata->ulps_enabled) | |
285 | return 0; | |
286 | ||
287 | r = in->ops.dsi->enable(in); | |
288 | if (r) { | |
289 | dev_err(&ddata->pdev->dev, "failed to enable DSI\n"); | |
290 | goto err1; | |
291 | } | |
292 | ||
293 | in->ops.dsi->enable_hs(in, ddata->channel, true); | |
294 | ||
295 | r = _dsicm_enable_te(ddata, true); | |
296 | if (r) { | |
297 | dev_err(&ddata->pdev->dev, "failed to re-enable TE"); | |
298 | goto err2; | |
299 | } | |
300 | ||
301 | if (gpio_is_valid(ddata->ext_te_gpio)) | |
302 | enable_irq(gpio_to_irq(ddata->ext_te_gpio)); | |
303 | ||
304 | dsicm_queue_ulps_work(ddata); | |
305 | ||
306 | ddata->ulps_enabled = false; | |
307 | ||
308 | return 0; | |
309 | ||
310 | err2: | |
311 | dev_err(&ddata->pdev->dev, "failed to exit ULPS"); | |
312 | ||
313 | r = dsicm_panel_reset(ddata); | |
314 | if (!r) { | |
315 | if (gpio_is_valid(ddata->ext_te_gpio)) | |
316 | enable_irq(gpio_to_irq(ddata->ext_te_gpio)); | |
317 | ddata->ulps_enabled = false; | |
318 | } | |
319 | err1: | |
320 | dsicm_queue_ulps_work(ddata); | |
321 | ||
322 | return r; | |
323 | } | |
324 | ||
325 | static int dsicm_wake_up(struct panel_drv_data *ddata) | |
326 | { | |
327 | if (ddata->ulps_enabled) | |
328 | return dsicm_exit_ulps(ddata); | |
329 | ||
330 | dsicm_cancel_ulps_work(ddata); | |
331 | dsicm_queue_ulps_work(ddata); | |
332 | return 0; | |
333 | } | |
334 | ||
335 | static int dsicm_bl_update_status(struct backlight_device *dev) | |
336 | { | |
337 | struct panel_drv_data *ddata = dev_get_drvdata(&dev->dev); | |
338 | struct omap_dss_device *in = ddata->in; | |
339 | int r; | |
340 | int level; | |
341 | ||
342 | if (dev->props.fb_blank == FB_BLANK_UNBLANK && | |
343 | dev->props.power == FB_BLANK_UNBLANK) | |
344 | level = dev->props.brightness; | |
345 | else | |
346 | level = 0; | |
347 | ||
348 | dev_dbg(&ddata->pdev->dev, "update brightness to %d\n", level); | |
349 | ||
350 | mutex_lock(&ddata->lock); | |
351 | ||
352 | if (ddata->enabled) { | |
353 | in->ops.dsi->bus_lock(in); | |
354 | ||
355 | r = dsicm_wake_up(ddata); | |
356 | if (!r) | |
357 | r = dsicm_dcs_write_1(ddata, DCS_BRIGHTNESS, level); | |
358 | ||
359 | in->ops.dsi->bus_unlock(in); | |
360 | } else { | |
361 | r = 0; | |
362 | } | |
363 | ||
364 | mutex_unlock(&ddata->lock); | |
365 | ||
366 | return r; | |
367 | } | |
368 | ||
369 | static int dsicm_bl_get_intensity(struct backlight_device *dev) | |
370 | { | |
371 | if (dev->props.fb_blank == FB_BLANK_UNBLANK && | |
372 | dev->props.power == FB_BLANK_UNBLANK) | |
373 | return dev->props.brightness; | |
374 | ||
375 | return 0; | |
376 | } | |
377 | ||
378 | static const struct backlight_ops dsicm_bl_ops = { | |
379 | .get_brightness = dsicm_bl_get_intensity, | |
380 | .update_status = dsicm_bl_update_status, | |
381 | }; | |
382 | ||
383 | static void dsicm_get_resolution(struct omap_dss_device *dssdev, | |
384 | u16 *xres, u16 *yres) | |
385 | { | |
386 | *xres = dssdev->panel.timings.x_res; | |
387 | *yres = dssdev->panel.timings.y_res; | |
388 | } | |
389 | ||
390 | static ssize_t dsicm_num_errors_show(struct device *dev, | |
391 | struct device_attribute *attr, char *buf) | |
392 | { | |
393 | struct platform_device *pdev = to_platform_device(dev); | |
394 | struct panel_drv_data *ddata = platform_get_drvdata(pdev); | |
395 | struct omap_dss_device *in = ddata->in; | |
396 | u8 errors = 0; | |
397 | int r; | |
398 | ||
399 | mutex_lock(&ddata->lock); | |
400 | ||
401 | if (ddata->enabled) { | |
402 | in->ops.dsi->bus_lock(in); | |
403 | ||
404 | r = dsicm_wake_up(ddata); | |
405 | if (!r) | |
406 | r = dsicm_dcs_read_1(ddata, DCS_READ_NUM_ERRORS, | |
407 | &errors); | |
408 | ||
409 | in->ops.dsi->bus_unlock(in); | |
410 | } else { | |
411 | r = -ENODEV; | |
412 | } | |
413 | ||
414 | mutex_unlock(&ddata->lock); | |
415 | ||
416 | if (r) | |
417 | return r; | |
418 | ||
419 | return snprintf(buf, PAGE_SIZE, "%d\n", errors); | |
420 | } | |
421 | ||
422 | static ssize_t dsicm_hw_revision_show(struct device *dev, | |
423 | struct device_attribute *attr, char *buf) | |
424 | { | |
425 | struct platform_device *pdev = to_platform_device(dev); | |
426 | struct panel_drv_data *ddata = platform_get_drvdata(pdev); | |
427 | struct omap_dss_device *in = ddata->in; | |
428 | u8 id1, id2, id3; | |
429 | int r; | |
430 | ||
431 | mutex_lock(&ddata->lock); | |
432 | ||
433 | if (ddata->enabled) { | |
434 | in->ops.dsi->bus_lock(in); | |
435 | ||
436 | r = dsicm_wake_up(ddata); | |
437 | if (!r) | |
438 | r = dsicm_get_id(ddata, &id1, &id2, &id3); | |
439 | ||
440 | in->ops.dsi->bus_unlock(in); | |
441 | } else { | |
442 | r = -ENODEV; | |
443 | } | |
444 | ||
445 | mutex_unlock(&ddata->lock); | |
446 | ||
447 | if (r) | |
448 | return r; | |
449 | ||
450 | return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x\n", id1, id2, id3); | |
451 | } | |
452 | ||
453 | static ssize_t dsicm_store_ulps(struct device *dev, | |
454 | struct device_attribute *attr, | |
455 | const char *buf, size_t count) | |
456 | { | |
457 | struct platform_device *pdev = to_platform_device(dev); | |
458 | struct panel_drv_data *ddata = platform_get_drvdata(pdev); | |
459 | struct omap_dss_device *in = ddata->in; | |
460 | unsigned long t; | |
461 | int r; | |
462 | ||
463 | r = kstrtoul(buf, 0, &t); | |
464 | if (r) | |
465 | return r; | |
466 | ||
467 | mutex_lock(&ddata->lock); | |
468 | ||
469 | if (ddata->enabled) { | |
470 | in->ops.dsi->bus_lock(in); | |
471 | ||
472 | if (t) | |
473 | r = dsicm_enter_ulps(ddata); | |
474 | else | |
475 | r = dsicm_wake_up(ddata); | |
476 | ||
477 | in->ops.dsi->bus_unlock(in); | |
478 | } | |
479 | ||
480 | mutex_unlock(&ddata->lock); | |
481 | ||
482 | if (r) | |
483 | return r; | |
484 | ||
485 | return count; | |
486 | } | |
487 | ||
488 | static ssize_t dsicm_show_ulps(struct device *dev, | |
489 | struct device_attribute *attr, | |
490 | char *buf) | |
491 | { | |
492 | struct platform_device *pdev = to_platform_device(dev); | |
493 | struct panel_drv_data *ddata = platform_get_drvdata(pdev); | |
494 | unsigned t; | |
495 | ||
496 | mutex_lock(&ddata->lock); | |
497 | t = ddata->ulps_enabled; | |
498 | mutex_unlock(&ddata->lock); | |
499 | ||
500 | return snprintf(buf, PAGE_SIZE, "%u\n", t); | |
501 | } | |
502 | ||
503 | static ssize_t dsicm_store_ulps_timeout(struct device *dev, | |
504 | struct device_attribute *attr, | |
505 | const char *buf, size_t count) | |
506 | { | |
507 | struct platform_device *pdev = to_platform_device(dev); | |
508 | struct panel_drv_data *ddata = platform_get_drvdata(pdev); | |
509 | struct omap_dss_device *in = ddata->in; | |
510 | unsigned long t; | |
511 | int r; | |
512 | ||
513 | r = kstrtoul(buf, 0, &t); | |
514 | if (r) | |
515 | return r; | |
516 | ||
517 | mutex_lock(&ddata->lock); | |
518 | ddata->ulps_timeout = t; | |
519 | ||
520 | if (ddata->enabled) { | |
521 | /* dsicm_wake_up will restart the timer */ | |
522 | in->ops.dsi->bus_lock(in); | |
523 | r = dsicm_wake_up(ddata); | |
524 | in->ops.dsi->bus_unlock(in); | |
525 | } | |
526 | ||
527 | mutex_unlock(&ddata->lock); | |
528 | ||
529 | if (r) | |
530 | return r; | |
531 | ||
532 | return count; | |
533 | } | |
534 | ||
535 | static ssize_t dsicm_show_ulps_timeout(struct device *dev, | |
536 | struct device_attribute *attr, | |
537 | char *buf) | |
538 | { | |
539 | struct platform_device *pdev = to_platform_device(dev); | |
540 | struct panel_drv_data *ddata = platform_get_drvdata(pdev); | |
541 | unsigned t; | |
542 | ||
543 | mutex_lock(&ddata->lock); | |
544 | t = ddata->ulps_timeout; | |
545 | mutex_unlock(&ddata->lock); | |
546 | ||
547 | return snprintf(buf, PAGE_SIZE, "%u\n", t); | |
548 | } | |
549 | ||
550 | static DEVICE_ATTR(num_dsi_errors, S_IRUGO, dsicm_num_errors_show, NULL); | |
551 | static DEVICE_ATTR(hw_revision, S_IRUGO, dsicm_hw_revision_show, NULL); | |
552 | static DEVICE_ATTR(ulps, S_IRUGO | S_IWUSR, | |
553 | dsicm_show_ulps, dsicm_store_ulps); | |
554 | static DEVICE_ATTR(ulps_timeout, S_IRUGO | S_IWUSR, | |
555 | dsicm_show_ulps_timeout, dsicm_store_ulps_timeout); | |
556 | ||
557 | static struct attribute *dsicm_attrs[] = { | |
558 | &dev_attr_num_dsi_errors.attr, | |
559 | &dev_attr_hw_revision.attr, | |
560 | &dev_attr_ulps.attr, | |
561 | &dev_attr_ulps_timeout.attr, | |
562 | NULL, | |
563 | }; | |
564 | ||
565 | static struct attribute_group dsicm_attr_group = { | |
566 | .attrs = dsicm_attrs, | |
567 | }; | |
568 | ||
569 | static void dsicm_hw_reset(struct panel_drv_data *ddata) | |
570 | { | |
571 | if (!gpio_is_valid(ddata->reset_gpio)) | |
572 | return; | |
573 | ||
574 | gpio_set_value(ddata->reset_gpio, 1); | |
575 | udelay(10); | |
576 | /* reset the panel */ | |
577 | gpio_set_value(ddata->reset_gpio, 0); | |
578 | /* assert reset */ | |
579 | udelay(10); | |
580 | gpio_set_value(ddata->reset_gpio, 1); | |
581 | /* wait after releasing reset */ | |
582 | usleep_range(5000, 10000); | |
583 | } | |
584 | ||
585 | static int dsicm_power_on(struct panel_drv_data *ddata) | |
586 | { | |
587 | struct omap_dss_device *in = ddata->in; | |
588 | u8 id1, id2, id3; | |
589 | int r; | |
590 | struct omap_dss_dsi_config dsi_config = { | |
591 | .mode = OMAP_DSS_DSI_CMD_MODE, | |
592 | .pixel_format = OMAP_DSS_DSI_FMT_RGB888, | |
593 | .timings = &ddata->timings, | |
594 | .hs_clk_min = 150000000, | |
595 | .hs_clk_max = 300000000, | |
596 | .lp_clk_min = 7000000, | |
597 | .lp_clk_max = 10000000, | |
598 | }; | |
599 | ||
cdeeaca2 TV |
600 | if (ddata->pin_config.num_pins > 0) { |
601 | r = in->ops.dsi->configure_pins(in, &ddata->pin_config); | |
602 | if (r) { | |
603 | dev_err(&ddata->pdev->dev, | |
604 | "failed to configure DSI pins\n"); | |
605 | goto err0; | |
606 | } | |
cf6ac4ce | 607 | } |
dbc23840 TV |
608 | |
609 | r = in->ops.dsi->set_config(in, &dsi_config); | |
610 | if (r) { | |
611 | dev_err(&ddata->pdev->dev, "failed to configure DSI\n"); | |
612 | goto err0; | |
613 | } | |
614 | ||
615 | r = in->ops.dsi->enable(in); | |
616 | if (r) { | |
617 | dev_err(&ddata->pdev->dev, "failed to enable DSI\n"); | |
618 | goto err0; | |
619 | } | |
620 | ||
621 | dsicm_hw_reset(ddata); | |
622 | ||
623 | in->ops.dsi->enable_hs(in, ddata->channel, false); | |
624 | ||
625 | r = dsicm_sleep_out(ddata); | |
626 | if (r) | |
627 | goto err; | |
628 | ||
629 | r = dsicm_get_id(ddata, &id1, &id2, &id3); | |
630 | if (r) | |
631 | goto err; | |
632 | ||
633 | r = dsicm_dcs_write_1(ddata, DCS_BRIGHTNESS, 0xff); | |
634 | if (r) | |
635 | goto err; | |
636 | ||
637 | r = dsicm_dcs_write_1(ddata, DCS_CTRL_DISPLAY, | |
638 | (1<<2) | (1<<5)); /* BL | BCTRL */ | |
639 | if (r) | |
640 | goto err; | |
641 | ||
642 | r = dsicm_dcs_write_1(ddata, MIPI_DCS_SET_PIXEL_FORMAT, | |
643 | MIPI_DCS_PIXEL_FMT_24BIT); | |
644 | if (r) | |
645 | goto err; | |
646 | ||
647 | r = dsicm_dcs_write_0(ddata, MIPI_DCS_SET_DISPLAY_ON); | |
648 | if (r) | |
649 | goto err; | |
650 | ||
651 | r = _dsicm_enable_te(ddata, ddata->te_enabled); | |
652 | if (r) | |
653 | goto err; | |
654 | ||
655 | r = in->ops.dsi->enable_video_output(in, ddata->channel); | |
656 | if (r) | |
657 | goto err; | |
658 | ||
659 | ddata->enabled = 1; | |
660 | ||
661 | if (!ddata->intro_printed) { | |
662 | dev_info(&ddata->pdev->dev, "panel revision %02x.%02x.%02x\n", | |
663 | id1, id2, id3); | |
664 | ddata->intro_printed = true; | |
665 | } | |
666 | ||
667 | in->ops.dsi->enable_hs(in, ddata->channel, true); | |
668 | ||
669 | return 0; | |
670 | err: | |
671 | dev_err(&ddata->pdev->dev, "error while enabling panel, issuing HW reset\n"); | |
672 | ||
673 | dsicm_hw_reset(ddata); | |
674 | ||
675 | in->ops.dsi->disable(in, true, false); | |
676 | err0: | |
677 | return r; | |
678 | } | |
679 | ||
680 | static void dsicm_power_off(struct panel_drv_data *ddata) | |
681 | { | |
682 | struct omap_dss_device *in = ddata->in; | |
683 | int r; | |
684 | ||
685 | in->ops.dsi->disable_video_output(in, ddata->channel); | |
686 | ||
687 | r = dsicm_dcs_write_0(ddata, MIPI_DCS_SET_DISPLAY_OFF); | |
688 | if (!r) | |
689 | r = dsicm_sleep_in(ddata); | |
690 | ||
691 | if (r) { | |
692 | dev_err(&ddata->pdev->dev, | |
693 | "error disabling panel, issuing HW reset\n"); | |
694 | dsicm_hw_reset(ddata); | |
695 | } | |
696 | ||
697 | in->ops.dsi->disable(in, true, false); | |
698 | ||
699 | ddata->enabled = 0; | |
700 | } | |
701 | ||
702 | static int dsicm_panel_reset(struct panel_drv_data *ddata) | |
703 | { | |
704 | dev_err(&ddata->pdev->dev, "performing LCD reset\n"); | |
705 | ||
706 | dsicm_power_off(ddata); | |
707 | dsicm_hw_reset(ddata); | |
708 | return dsicm_power_on(ddata); | |
709 | } | |
710 | ||
711 | static int dsicm_connect(struct omap_dss_device *dssdev) | |
712 | { | |
713 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
714 | struct omap_dss_device *in = ddata->in; | |
715 | struct device *dev = &ddata->pdev->dev; | |
716 | int r; | |
717 | ||
718 | if (omapdss_device_is_connected(dssdev)) | |
719 | return 0; | |
720 | ||
721 | r = in->ops.dsi->connect(in, dssdev); | |
722 | if (r) { | |
723 | dev_err(dev, "Failed to connect to video source\n"); | |
724 | return r; | |
725 | } | |
726 | ||
727 | r = in->ops.dsi->request_vc(ddata->in, &ddata->channel); | |
728 | if (r) { | |
729 | dev_err(dev, "failed to get virtual channel\n"); | |
730 | goto err_req_vc; | |
731 | } | |
732 | ||
733 | r = in->ops.dsi->set_vc_id(ddata->in, ddata->channel, TCH); | |
734 | if (r) { | |
735 | dev_err(dev, "failed to set VC_ID\n"); | |
736 | goto err_vc_id; | |
737 | } | |
738 | ||
739 | return 0; | |
740 | ||
741 | err_vc_id: | |
742 | in->ops.dsi->release_vc(ddata->in, ddata->channel); | |
743 | err_req_vc: | |
744 | in->ops.dsi->disconnect(in, dssdev); | |
745 | return r; | |
746 | } | |
747 | ||
748 | static void dsicm_disconnect(struct omap_dss_device *dssdev) | |
749 | { | |
750 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
751 | struct omap_dss_device *in = ddata->in; | |
752 | ||
753 | if (!omapdss_device_is_connected(dssdev)) | |
754 | return; | |
755 | ||
756 | in->ops.dsi->release_vc(in, ddata->channel); | |
757 | in->ops.dsi->disconnect(in, dssdev); | |
758 | } | |
759 | ||
760 | static int dsicm_enable(struct omap_dss_device *dssdev) | |
761 | { | |
762 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
763 | struct omap_dss_device *in = ddata->in; | |
764 | int r; | |
765 | ||
766 | dev_dbg(&ddata->pdev->dev, "enable\n"); | |
767 | ||
768 | mutex_lock(&ddata->lock); | |
769 | ||
770 | if (!omapdss_device_is_connected(dssdev)) { | |
771 | r = -ENODEV; | |
772 | goto err; | |
773 | } | |
774 | ||
775 | if (omapdss_device_is_enabled(dssdev)) { | |
776 | r = 0; | |
777 | goto err; | |
778 | } | |
779 | ||
780 | in->ops.dsi->bus_lock(in); | |
781 | ||
782 | r = dsicm_power_on(ddata); | |
783 | ||
784 | in->ops.dsi->bus_unlock(in); | |
785 | ||
786 | if (r) | |
787 | goto err; | |
788 | ||
789 | dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; | |
790 | ||
791 | mutex_unlock(&ddata->lock); | |
792 | ||
793 | return 0; | |
794 | err: | |
795 | dev_dbg(&ddata->pdev->dev, "enable failed\n"); | |
796 | mutex_unlock(&ddata->lock); | |
797 | return r; | |
798 | } | |
799 | ||
800 | static void dsicm_disable(struct omap_dss_device *dssdev) | |
801 | { | |
802 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
803 | struct omap_dss_device *in = ddata->in; | |
804 | int r; | |
805 | ||
806 | dev_dbg(&ddata->pdev->dev, "disable\n"); | |
807 | ||
808 | mutex_lock(&ddata->lock); | |
809 | ||
810 | dsicm_cancel_ulps_work(ddata); | |
811 | ||
812 | in->ops.dsi->bus_lock(in); | |
813 | ||
814 | if (omapdss_device_is_enabled(dssdev)) { | |
815 | r = dsicm_wake_up(ddata); | |
816 | if (!r) | |
817 | dsicm_power_off(ddata); | |
818 | } | |
819 | ||
820 | in->ops.dsi->bus_unlock(in); | |
821 | ||
822 | dssdev->state = OMAP_DSS_DISPLAY_DISABLED; | |
823 | ||
824 | mutex_unlock(&ddata->lock); | |
825 | } | |
826 | ||
827 | static void dsicm_framedone_cb(int err, void *data) | |
828 | { | |
829 | struct panel_drv_data *ddata = data; | |
830 | struct omap_dss_device *in = ddata->in; | |
831 | ||
832 | dev_dbg(&ddata->pdev->dev, "framedone, err %d\n", err); | |
833 | in->ops.dsi->bus_unlock(ddata->in); | |
834 | } | |
835 | ||
836 | static irqreturn_t dsicm_te_isr(int irq, void *data) | |
837 | { | |
838 | struct panel_drv_data *ddata = data; | |
839 | struct omap_dss_device *in = ddata->in; | |
840 | int old; | |
841 | int r; | |
842 | ||
843 | old = atomic_cmpxchg(&ddata->do_update, 1, 0); | |
844 | ||
845 | if (old) { | |
846 | cancel_delayed_work(&ddata->te_timeout_work); | |
847 | ||
848 | r = in->ops.dsi->update(in, ddata->channel, dsicm_framedone_cb, | |
849 | ddata); | |
850 | if (r) | |
851 | goto err; | |
852 | } | |
853 | ||
854 | return IRQ_HANDLED; | |
855 | err: | |
856 | dev_err(&ddata->pdev->dev, "start update failed\n"); | |
857 | in->ops.dsi->bus_unlock(in); | |
858 | return IRQ_HANDLED; | |
859 | } | |
860 | ||
861 | static void dsicm_te_timeout_work_callback(struct work_struct *work) | |
862 | { | |
863 | struct panel_drv_data *ddata = container_of(work, struct panel_drv_data, | |
864 | te_timeout_work.work); | |
865 | struct omap_dss_device *in = ddata->in; | |
866 | ||
867 | dev_err(&ddata->pdev->dev, "TE not received for 250ms!\n"); | |
868 | ||
869 | atomic_set(&ddata->do_update, 0); | |
870 | in->ops.dsi->bus_unlock(in); | |
871 | } | |
872 | ||
873 | static int dsicm_update(struct omap_dss_device *dssdev, | |
874 | u16 x, u16 y, u16 w, u16 h) | |
875 | { | |
876 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
877 | struct omap_dss_device *in = ddata->in; | |
878 | int r; | |
879 | ||
880 | dev_dbg(&ddata->pdev->dev, "update %d, %d, %d x %d\n", x, y, w, h); | |
881 | ||
882 | mutex_lock(&ddata->lock); | |
883 | in->ops.dsi->bus_lock(in); | |
884 | ||
885 | r = dsicm_wake_up(ddata); | |
886 | if (r) | |
887 | goto err; | |
888 | ||
889 | if (!ddata->enabled) { | |
890 | r = 0; | |
891 | goto err; | |
892 | } | |
893 | ||
894 | /* XXX no need to send this every frame, but dsi break if not done */ | |
895 | r = dsicm_set_update_window(ddata, 0, 0, | |
896 | dssdev->panel.timings.x_res, | |
897 | dssdev->panel.timings.y_res); | |
898 | if (r) | |
899 | goto err; | |
900 | ||
901 | if (ddata->te_enabled && gpio_is_valid(ddata->ext_te_gpio)) { | |
902 | schedule_delayed_work(&ddata->te_timeout_work, | |
903 | msecs_to_jiffies(250)); | |
904 | atomic_set(&ddata->do_update, 1); | |
905 | } else { | |
906 | r = in->ops.dsi->update(in, ddata->channel, dsicm_framedone_cb, | |
907 | ddata); | |
908 | if (r) | |
909 | goto err; | |
910 | } | |
911 | ||
912 | /* note: no bus_unlock here. unlock is in framedone_cb */ | |
913 | mutex_unlock(&ddata->lock); | |
914 | return 0; | |
915 | err: | |
916 | in->ops.dsi->bus_unlock(in); | |
917 | mutex_unlock(&ddata->lock); | |
918 | return r; | |
919 | } | |
920 | ||
921 | static int dsicm_sync(struct omap_dss_device *dssdev) | |
922 | { | |
923 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
924 | struct omap_dss_device *in = ddata->in; | |
925 | ||
926 | dev_dbg(&ddata->pdev->dev, "sync\n"); | |
927 | ||
928 | mutex_lock(&ddata->lock); | |
929 | in->ops.dsi->bus_lock(in); | |
930 | in->ops.dsi->bus_unlock(in); | |
931 | mutex_unlock(&ddata->lock); | |
932 | ||
933 | dev_dbg(&ddata->pdev->dev, "sync done\n"); | |
934 | ||
935 | return 0; | |
936 | } | |
937 | ||
938 | static int _dsicm_enable_te(struct panel_drv_data *ddata, bool enable) | |
939 | { | |
940 | struct omap_dss_device *in = ddata->in; | |
941 | int r; | |
942 | ||
943 | if (enable) | |
944 | r = dsicm_dcs_write_1(ddata, MIPI_DCS_SET_TEAR_ON, 0); | |
945 | else | |
946 | r = dsicm_dcs_write_0(ddata, MIPI_DCS_SET_TEAR_OFF); | |
947 | ||
948 | if (!gpio_is_valid(ddata->ext_te_gpio)) | |
949 | in->ops.dsi->enable_te(in, enable); | |
950 | ||
951 | /* possible panel bug */ | |
952 | msleep(100); | |
953 | ||
954 | return r; | |
955 | } | |
956 | ||
957 | static int dsicm_enable_te(struct omap_dss_device *dssdev, bool enable) | |
958 | { | |
959 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
960 | struct omap_dss_device *in = ddata->in; | |
961 | int r; | |
962 | ||
963 | mutex_lock(&ddata->lock); | |
964 | ||
965 | if (ddata->te_enabled == enable) | |
966 | goto end; | |
967 | ||
968 | in->ops.dsi->bus_lock(in); | |
969 | ||
970 | if (ddata->enabled) { | |
971 | r = dsicm_wake_up(ddata); | |
972 | if (r) | |
973 | goto err; | |
974 | ||
975 | r = _dsicm_enable_te(ddata, enable); | |
976 | if (r) | |
977 | goto err; | |
978 | } | |
979 | ||
980 | ddata->te_enabled = enable; | |
981 | ||
982 | in->ops.dsi->bus_unlock(in); | |
983 | end: | |
984 | mutex_unlock(&ddata->lock); | |
985 | ||
986 | return 0; | |
987 | err: | |
988 | in->ops.dsi->bus_unlock(in); | |
989 | mutex_unlock(&ddata->lock); | |
990 | ||
991 | return r; | |
992 | } | |
993 | ||
994 | static int dsicm_get_te(struct omap_dss_device *dssdev) | |
995 | { | |
996 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
997 | int r; | |
998 | ||
999 | mutex_lock(&ddata->lock); | |
1000 | r = ddata->te_enabled; | |
1001 | mutex_unlock(&ddata->lock); | |
1002 | ||
1003 | return r; | |
1004 | } | |
1005 | ||
1006 | static int dsicm_memory_read(struct omap_dss_device *dssdev, | |
1007 | void *buf, size_t size, | |
1008 | u16 x, u16 y, u16 w, u16 h) | |
1009 | { | |
1010 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
1011 | struct omap_dss_device *in = ddata->in; | |
1012 | int r; | |
1013 | int first = 1; | |
1014 | int plen; | |
1015 | unsigned buf_used = 0; | |
1016 | ||
1017 | if (size < w * h * 3) | |
1018 | return -ENOMEM; | |
1019 | ||
1020 | mutex_lock(&ddata->lock); | |
1021 | ||
1022 | if (!ddata->enabled) { | |
1023 | r = -ENODEV; | |
1024 | goto err1; | |
1025 | } | |
1026 | ||
1027 | size = min(w * h * 3, | |
1028 | dssdev->panel.timings.x_res * | |
1029 | dssdev->panel.timings.y_res * 3); | |
1030 | ||
1031 | in->ops.dsi->bus_lock(in); | |
1032 | ||
1033 | r = dsicm_wake_up(ddata); | |
1034 | if (r) | |
1035 | goto err2; | |
1036 | ||
1037 | /* plen 1 or 2 goes into short packet. until checksum error is fixed, | |
1038 | * use short packets. plen 32 works, but bigger packets seem to cause | |
1039 | * an error. */ | |
1040 | if (size % 2) | |
1041 | plen = 1; | |
1042 | else | |
1043 | plen = 2; | |
1044 | ||
1045 | dsicm_set_update_window(ddata, x, y, w, h); | |
1046 | ||
1047 | r = in->ops.dsi->set_max_rx_packet_size(in, ddata->channel, plen); | |
1048 | if (r) | |
1049 | goto err2; | |
1050 | ||
1051 | while (buf_used < size) { | |
1052 | u8 dcs_cmd = first ? 0x2e : 0x3e; | |
1053 | first = 0; | |
1054 | ||
1055 | r = in->ops.dsi->dcs_read(in, ddata->channel, dcs_cmd, | |
1056 | buf + buf_used, size - buf_used); | |
1057 | ||
1058 | if (r < 0) { | |
1059 | dev_err(dssdev->dev, "read error\n"); | |
1060 | goto err3; | |
1061 | } | |
1062 | ||
1063 | buf_used += r; | |
1064 | ||
1065 | if (r < plen) { | |
1066 | dev_err(&ddata->pdev->dev, "short read\n"); | |
1067 | break; | |
1068 | } | |
1069 | ||
1070 | if (signal_pending(current)) { | |
1071 | dev_err(&ddata->pdev->dev, "signal pending, " | |
1072 | "aborting memory read\n"); | |
1073 | r = -ERESTARTSYS; | |
1074 | goto err3; | |
1075 | } | |
1076 | } | |
1077 | ||
1078 | r = buf_used; | |
1079 | ||
1080 | err3: | |
1081 | in->ops.dsi->set_max_rx_packet_size(in, ddata->channel, 1); | |
1082 | err2: | |
1083 | in->ops.dsi->bus_unlock(in); | |
1084 | err1: | |
1085 | mutex_unlock(&ddata->lock); | |
1086 | return r; | |
1087 | } | |
1088 | ||
1089 | static void dsicm_ulps_work(struct work_struct *work) | |
1090 | { | |
1091 | struct panel_drv_data *ddata = container_of(work, struct panel_drv_data, | |
1092 | ulps_work.work); | |
1093 | struct omap_dss_device *dssdev = &ddata->dssdev; | |
1094 | struct omap_dss_device *in = ddata->in; | |
1095 | ||
1096 | mutex_lock(&ddata->lock); | |
1097 | ||
1098 | if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE || !ddata->enabled) { | |
1099 | mutex_unlock(&ddata->lock); | |
1100 | return; | |
1101 | } | |
1102 | ||
1103 | in->ops.dsi->bus_lock(in); | |
1104 | ||
1105 | dsicm_enter_ulps(ddata); | |
1106 | ||
1107 | in->ops.dsi->bus_unlock(in); | |
1108 | mutex_unlock(&ddata->lock); | |
1109 | } | |
1110 | ||
1111 | static struct omap_dss_driver dsicm_ops = { | |
1112 | .connect = dsicm_connect, | |
1113 | .disconnect = dsicm_disconnect, | |
1114 | ||
1115 | .enable = dsicm_enable, | |
1116 | .disable = dsicm_disable, | |
1117 | ||
1118 | .update = dsicm_update, | |
1119 | .sync = dsicm_sync, | |
1120 | ||
1121 | .get_resolution = dsicm_get_resolution, | |
1122 | .get_recommended_bpp = omapdss_default_get_recommended_bpp, | |
1123 | ||
1124 | .enable_te = dsicm_enable_te, | |
1125 | .get_te = dsicm_get_te, | |
1126 | ||
1127 | .memory_read = dsicm_memory_read, | |
1128 | }; | |
1129 | ||
cdeeaca2 TV |
1130 | static int dsicm_probe_of(struct platform_device *pdev) |
1131 | { | |
1132 | struct device_node *node = pdev->dev.of_node; | |
1133 | struct panel_drv_data *ddata = platform_get_drvdata(pdev); | |
1134 | struct omap_dss_device *in; | |
1135 | int gpio; | |
1136 | ||
1137 | gpio = of_get_named_gpio(node, "reset-gpios", 0); | |
1138 | if (!gpio_is_valid(gpio)) { | |
1139 | dev_err(&pdev->dev, "failed to parse reset gpio\n"); | |
1140 | return gpio; | |
1141 | } | |
1142 | ddata->reset_gpio = gpio; | |
1143 | ||
1144 | gpio = of_get_named_gpio(node, "te-gpios", 0); | |
1145 | if (gpio_is_valid(gpio) || gpio == -ENOENT) { | |
1146 | ddata->ext_te_gpio = gpio; | |
1147 | } else { | |
1148 | dev_err(&pdev->dev, "failed to parse TE gpio\n"); | |
1149 | return gpio; | |
1150 | } | |
1151 | ||
1152 | in = omapdss_of_find_source_for_first_ep(node); | |
1153 | if (IS_ERR(in)) { | |
1154 | dev_err(&pdev->dev, "failed to find video source\n"); | |
1155 | return PTR_ERR(in); | |
1156 | } | |
1157 | ||
1158 | ddata->in = in; | |
1159 | ||
1160 | /* TODO: ulps, backlight */ | |
1161 | ||
1162 | return 0; | |
1163 | } | |
1164 | ||
dbc23840 TV |
1165 | static int dsicm_probe(struct platform_device *pdev) |
1166 | { | |
1167 | struct backlight_properties props; | |
1168 | struct panel_drv_data *ddata; | |
1169 | struct backlight_device *bldev = NULL; | |
1170 | struct device *dev = &pdev->dev; | |
1171 | struct omap_dss_device *dssdev; | |
1172 | int r; | |
1173 | ||
1174 | dev_dbg(dev, "probe\n"); | |
1175 | ||
1176 | ddata = devm_kzalloc(dev, sizeof(*ddata), GFP_KERNEL); | |
1177 | if (!ddata) | |
1178 | return -ENOMEM; | |
1179 | ||
1180 | platform_set_drvdata(pdev, ddata); | |
1181 | ddata->pdev = pdev; | |
1182 | ||
55f6fca3 | 1183 | if (!pdev->dev.of_node) |
dbc23840 | 1184 | return -ENODEV; |
3d1f0f59 TV |
1185 | |
1186 | r = dsicm_probe_of(pdev); | |
1187 | if (r) | |
1188 | return r; | |
dbc23840 TV |
1189 | |
1190 | ddata->timings.x_res = 864; | |
1191 | ddata->timings.y_res = 480; | |
d8d78941 | 1192 | ddata->timings.pixelclock = 864 * 480 * 60; |
dbc23840 TV |
1193 | |
1194 | dssdev = &ddata->dssdev; | |
1195 | dssdev->dev = dev; | |
1196 | dssdev->driver = &dsicm_ops; | |
1197 | dssdev->panel.timings = ddata->timings; | |
1198 | dssdev->type = OMAP_DISPLAY_TYPE_DSI; | |
1199 | dssdev->owner = THIS_MODULE; | |
1200 | ||
1201 | dssdev->panel.dsi_pix_fmt = OMAP_DSS_DSI_FMT_RGB888; | |
1202 | dssdev->caps = OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE | | |
1203 | OMAP_DSS_DISPLAY_CAP_TEAR_ELIM; | |
1204 | ||
1205 | r = omapdss_register_display(dssdev); | |
1206 | if (r) { | |
1207 | dev_err(dev, "Failed to register panel\n"); | |
1208 | goto err_reg; | |
1209 | } | |
1210 | ||
1211 | mutex_init(&ddata->lock); | |
1212 | ||
1213 | atomic_set(&ddata->do_update, 0); | |
1214 | ||
1215 | if (gpio_is_valid(ddata->reset_gpio)) { | |
1216 | r = devm_gpio_request_one(dev, ddata->reset_gpio, | |
1217 | GPIOF_OUT_INIT_LOW, "taal rst"); | |
1218 | if (r) { | |
1219 | dev_err(dev, "failed to request reset gpio\n"); | |
1220 | return r; | |
1221 | } | |
1222 | } | |
1223 | ||
1224 | if (gpio_is_valid(ddata->ext_te_gpio)) { | |
1225 | r = devm_gpio_request_one(dev, ddata->ext_te_gpio, | |
1226 | GPIOF_IN, "taal irq"); | |
1227 | if (r) { | |
1228 | dev_err(dev, "GPIO request failed\n"); | |
1229 | return r; | |
1230 | } | |
1231 | ||
1232 | r = devm_request_irq(dev, gpio_to_irq(ddata->ext_te_gpio), | |
1233 | dsicm_te_isr, | |
1234 | IRQF_TRIGGER_RISING, | |
1235 | "taal vsync", ddata); | |
1236 | ||
1237 | if (r) { | |
1238 | dev_err(dev, "IRQ request failed\n"); | |
1239 | return r; | |
1240 | } | |
1241 | ||
1242 | INIT_DEFERRABLE_WORK(&ddata->te_timeout_work, | |
1243 | dsicm_te_timeout_work_callback); | |
1244 | ||
1245 | dev_dbg(dev, "Using GPIO TE\n"); | |
1246 | } | |
1247 | ||
1248 | ddata->workqueue = create_singlethread_workqueue("dsicm_wq"); | |
1249 | if (ddata->workqueue == NULL) { | |
1250 | dev_err(dev, "can't create workqueue\n"); | |
1251 | return -ENOMEM; | |
1252 | } | |
1253 | INIT_DELAYED_WORK(&ddata->ulps_work, dsicm_ulps_work); | |
1254 | ||
1255 | dsicm_hw_reset(ddata); | |
1256 | ||
1257 | if (ddata->use_dsi_backlight) { | |
1258 | memset(&props, 0, sizeof(struct backlight_properties)); | |
1259 | props.max_brightness = 255; | |
1260 | ||
1261 | props.type = BACKLIGHT_RAW; | |
1262 | bldev = backlight_device_register(dev_name(dev), | |
1263 | dev, ddata, &dsicm_bl_ops, &props); | |
1264 | if (IS_ERR(bldev)) { | |
1265 | r = PTR_ERR(bldev); | |
1266 | goto err_bl; | |
1267 | } | |
1268 | ||
1269 | ddata->bldev = bldev; | |
1270 | ||
1271 | bldev->props.fb_blank = FB_BLANK_UNBLANK; | |
1272 | bldev->props.power = FB_BLANK_UNBLANK; | |
1273 | bldev->props.brightness = 255; | |
1274 | ||
1275 | dsicm_bl_update_status(bldev); | |
1276 | } | |
1277 | ||
1278 | r = sysfs_create_group(&dev->kobj, &dsicm_attr_group); | |
1279 | if (r) { | |
1280 | dev_err(dev, "failed to create sysfs files\n"); | |
1281 | goto err_sysfs_create; | |
1282 | } | |
1283 | ||
1284 | return 0; | |
1285 | ||
1286 | err_sysfs_create: | |
1287 | if (bldev != NULL) | |
1288 | backlight_device_unregister(bldev); | |
1289 | err_bl: | |
1290 | destroy_workqueue(ddata->workqueue); | |
1291 | err_reg: | |
1292 | return r; | |
1293 | } | |
1294 | ||
1295 | static int __exit dsicm_remove(struct platform_device *pdev) | |
1296 | { | |
1297 | struct panel_drv_data *ddata = platform_get_drvdata(pdev); | |
1298 | struct omap_dss_device *dssdev = &ddata->dssdev; | |
1299 | struct backlight_device *bldev; | |
1300 | ||
1301 | dev_dbg(&pdev->dev, "remove\n"); | |
1302 | ||
1303 | omapdss_unregister_display(dssdev); | |
1304 | ||
1305 | dsicm_disable(dssdev); | |
1306 | dsicm_disconnect(dssdev); | |
1307 | ||
1308 | sysfs_remove_group(&pdev->dev.kobj, &dsicm_attr_group); | |
1309 | ||
1310 | bldev = ddata->bldev; | |
1311 | if (bldev != NULL) { | |
1312 | bldev->props.power = FB_BLANK_POWERDOWN; | |
1313 | dsicm_bl_update_status(bldev); | |
1314 | backlight_device_unregister(bldev); | |
1315 | } | |
1316 | ||
1317 | omap_dss_put_device(ddata->in); | |
1318 | ||
1319 | dsicm_cancel_ulps_work(ddata); | |
1320 | destroy_workqueue(ddata->workqueue); | |
1321 | ||
1322 | /* reset, to be sure that the panel is in a valid state */ | |
1323 | dsicm_hw_reset(ddata); | |
1324 | ||
1325 | return 0; | |
1326 | } | |
1327 | ||
cdeeaca2 TV |
1328 | static const struct of_device_id dsicm_of_match[] = { |
1329 | { .compatible = "omapdss,panel-dsi-cm", }, | |
1330 | {}, | |
1331 | }; | |
1332 | ||
1333 | MODULE_DEVICE_TABLE(of, dsicm_of_match); | |
1334 | ||
dbc23840 TV |
1335 | static struct platform_driver dsicm_driver = { |
1336 | .probe = dsicm_probe, | |
1337 | .remove = __exit_p(dsicm_remove), | |
1338 | .driver = { | |
1339 | .name = "panel-dsi-cm", | |
cdeeaca2 | 1340 | .of_match_table = dsicm_of_match, |
422ccbd5 | 1341 | .suppress_bind_attrs = true, |
dbc23840 TV |
1342 | }, |
1343 | }; | |
1344 | ||
1345 | module_platform_driver(dsicm_driver); | |
1346 | ||
1347 | MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>"); | |
1348 | MODULE_DESCRIPTION("Generic DSI Command Mode Panel Driver"); | |
1349 | MODULE_LICENSE("GPL"); |