1
2
3
4
5
6
7
8
9
10
11
12#include <linux/kernel.h>
13#include <linux/module.h>
14#include <linux/platform_device.h>
15#include <linux/delay.h>
16#include <linux/spi/spi.h>
17#include <linux/jiffies.h>
18#include <linux/sched.h>
19#include <linux/backlight.h>
20#include <linux/fb.h>
21#include <linux/gpio.h>
22#include <linux/of.h>
23#include <linux/of_gpio.h>
24
25#include <video/omapfb_dss.h>
26#include <video/omap-panel-data.h>
27
28#define MIPID_CMD_READ_DISP_ID 0x04
29#define MIPID_CMD_READ_RED 0x06
30#define MIPID_CMD_READ_GREEN 0x07
31#define MIPID_CMD_READ_BLUE 0x08
32#define MIPID_CMD_READ_DISP_STATUS 0x09
33#define MIPID_CMD_RDDSDR 0x0F
34#define MIPID_CMD_SLEEP_IN 0x10
35#define MIPID_CMD_SLEEP_OUT 0x11
36#define MIPID_CMD_DISP_OFF 0x28
37#define MIPID_CMD_DISP_ON 0x29
38#define MIPID_CMD_WRITE_DISP_BRIGHTNESS 0x51
39#define MIPID_CMD_READ_DISP_BRIGHTNESS 0x52
40#define MIPID_CMD_WRITE_CTRL_DISP 0x53
41
42#define CTRL_DISP_BRIGHTNESS_CTRL_ON (1 << 5)
43#define CTRL_DISP_AMBIENT_LIGHT_CTRL_ON (1 << 4)
44#define CTRL_DISP_BACKLIGHT_ON (1 << 2)
45#define CTRL_DISP_AUTO_BRIGHTNESS_ON (1 << 1)
46
47#define MIPID_CMD_READ_CTRL_DISP 0x54
48#define MIPID_CMD_WRITE_CABC 0x55
49#define MIPID_CMD_READ_CABC 0x56
50
51#define MIPID_VER_LPH8923 3
52#define MIPID_VER_LS041Y3 4
53#define MIPID_VER_L4F00311 8
54#define MIPID_VER_ACX565AKM 9
55
56struct panel_drv_data {
57 struct omap_dss_device dssdev;
58 struct omap_dss_device *in;
59
60 int reset_gpio;
61 int datapairs;
62
63 struct omap_video_timings videomode;
64
65 char *name;
66 int enabled;
67 int model;
68 int revision;
69 u8 display_id[3];
70 unsigned has_bc:1;
71 unsigned has_cabc:1;
72 unsigned cabc_mode;
73 unsigned long hw_guard_end;
74
75
76 unsigned long hw_guard_wait;
77
78 struct spi_device *spi;
79 struct mutex mutex;
80
81 struct backlight_device *bl_dev;
82};
83
84static const struct omap_video_timings acx565akm_panel_timings = {
85 .x_res = 800,
86 .y_res = 480,
87 .pixelclock = 24000000,
88 .hfp = 28,
89 .hsw = 4,
90 .hbp = 24,
91 .vfp = 3,
92 .vsw = 3,
93 .vbp = 4,
94
95 .vsync_level = OMAPDSS_SIG_ACTIVE_LOW,
96 .hsync_level = OMAPDSS_SIG_ACTIVE_LOW,
97
98 .data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE,
99 .de_level = OMAPDSS_SIG_ACTIVE_HIGH,
100 .sync_pclk_edge = OMAPDSS_DRIVE_SIG_FALLING_EDGE,
101};
102
103#define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev)
104
105static void acx565akm_transfer(struct panel_drv_data *ddata, int cmd,
106 const u8 *wbuf, int wlen, u8 *rbuf, int rlen)
107{
108 struct spi_message m;
109 struct spi_transfer *x, xfer[5];
110 int r;
111
112 BUG_ON(ddata->spi == NULL);
113
114 spi_message_init(&m);
115
116 memset(xfer, 0, sizeof(xfer));
117 x = &xfer[0];
118
119 cmd &= 0xff;
120 x->tx_buf = &cmd;
121 x->bits_per_word = 9;
122 x->len = 2;
123
124 if (rlen > 1 && wlen == 0) {
125
126
127
128
129
130 x->bits_per_word = 10;
131 cmd <<= 1;
132 }
133 spi_message_add_tail(x, &m);
134
135 if (wlen) {
136 x++;
137 x->tx_buf = wbuf;
138 x->len = wlen;
139 x->bits_per_word = 9;
140 spi_message_add_tail(x, &m);
141 }
142
143 if (rlen) {
144 x++;
145 x->rx_buf = rbuf;
146 x->len = rlen;
147 spi_message_add_tail(x, &m);
148 }
149
150 r = spi_sync(ddata->spi, &m);
151 if (r < 0)
152 dev_dbg(&ddata->spi->dev, "spi_sync %d\n", r);
153}
154
155static inline void acx565akm_cmd(struct panel_drv_data *ddata, int cmd)
156{
157 acx565akm_transfer(ddata, cmd, NULL, 0, NULL, 0);
158}
159
160static inline void acx565akm_write(struct panel_drv_data *ddata,
161 int reg, const u8 *buf, int len)
162{
163 acx565akm_transfer(ddata, reg, buf, len, NULL, 0);
164}
165
166static inline void acx565akm_read(struct panel_drv_data *ddata,
167 int reg, u8 *buf, int len)
168{
169 acx565akm_transfer(ddata, reg, NULL, 0, buf, len);
170}
171
172static void hw_guard_start(struct panel_drv_data *ddata, int guard_msec)
173{
174 ddata->hw_guard_wait = msecs_to_jiffies(guard_msec);
175 ddata->hw_guard_end = jiffies + ddata->hw_guard_wait;
176}
177
178static void hw_guard_wait(struct panel_drv_data *ddata)
179{
180 unsigned long wait = ddata->hw_guard_end - jiffies;
181
182 if ((long)wait > 0 && wait <= ddata->hw_guard_wait) {
183 set_current_state(TASK_UNINTERRUPTIBLE);
184 schedule_timeout(wait);
185 }
186}
187
188static void set_sleep_mode(struct panel_drv_data *ddata, int on)
189{
190 int cmd;
191
192 if (on)
193 cmd = MIPID_CMD_SLEEP_IN;
194 else
195 cmd = MIPID_CMD_SLEEP_OUT;
196
197
198
199
200 hw_guard_wait(ddata);
201 acx565akm_cmd(ddata, cmd);
202 hw_guard_start(ddata, 120);
203}
204
205static void set_display_state(struct panel_drv_data *ddata, int enabled)
206{
207 int cmd = enabled ? MIPID_CMD_DISP_ON : MIPID_CMD_DISP_OFF;
208
209 acx565akm_cmd(ddata, cmd);
210}
211
212static int panel_enabled(struct panel_drv_data *ddata)
213{
214 u32 disp_status;
215 int enabled;
216
217 acx565akm_read(ddata, MIPID_CMD_READ_DISP_STATUS,
218 (u8 *)&disp_status, 4);
219 disp_status = __be32_to_cpu(disp_status);
220 enabled = (disp_status & (1 << 17)) && (disp_status & (1 << 10));
221 dev_dbg(&ddata->spi->dev,
222 "LCD panel %senabled by bootloader (status 0x%04x)\n",
223 enabled ? "" : "not ", disp_status);
224 return enabled;
225}
226
227static int panel_detect(struct panel_drv_data *ddata)
228{
229 acx565akm_read(ddata, MIPID_CMD_READ_DISP_ID, ddata->display_id, 3);
230 dev_dbg(&ddata->spi->dev, "MIPI display ID: %02x%02x%02x\n",
231 ddata->display_id[0],
232 ddata->display_id[1],
233 ddata->display_id[2]);
234
235 switch (ddata->display_id[0]) {
236 case 0x10:
237 ddata->model = MIPID_VER_ACX565AKM;
238 ddata->name = "acx565akm";
239 ddata->has_bc = 1;
240 ddata->has_cabc = 1;
241 break;
242 case 0x29:
243 ddata->model = MIPID_VER_L4F00311;
244 ddata->name = "l4f00311";
245 break;
246 case 0x45:
247 ddata->model = MIPID_VER_LPH8923;
248 ddata->name = "lph8923";
249 break;
250 case 0x83:
251 ddata->model = MIPID_VER_LS041Y3;
252 ddata->name = "ls041y3";
253 break;
254 default:
255 ddata->name = "unknown";
256 dev_err(&ddata->spi->dev, "invalid display ID\n");
257 return -ENODEV;
258 }
259
260 ddata->revision = ddata->display_id[1];
261
262 dev_info(&ddata->spi->dev, "omapfb: %s rev %02x LCD detected\n",
263 ddata->name, ddata->revision);
264
265 return 0;
266}
267
268
269
270static void enable_backlight_ctrl(struct panel_drv_data *ddata, int enable)
271{
272 u16 ctrl;
273
274 acx565akm_read(ddata, MIPID_CMD_READ_CTRL_DISP, (u8 *)&ctrl, 1);
275 if (enable) {
276 ctrl |= CTRL_DISP_BRIGHTNESS_CTRL_ON |
277 CTRL_DISP_BACKLIGHT_ON;
278 } else {
279 ctrl &= ~(CTRL_DISP_BRIGHTNESS_CTRL_ON |
280 CTRL_DISP_BACKLIGHT_ON);
281 }
282
283 ctrl |= 1 << 8;
284 acx565akm_write(ddata, MIPID_CMD_WRITE_CTRL_DISP, (u8 *)&ctrl, 2);
285}
286
287static void set_cabc_mode(struct panel_drv_data *ddata, unsigned mode)
288{
289 u16 cabc_ctrl;
290
291 ddata->cabc_mode = mode;
292 if (!ddata->enabled)
293 return;
294 cabc_ctrl = 0;
295 acx565akm_read(ddata, MIPID_CMD_READ_CABC, (u8 *)&cabc_ctrl, 1);
296 cabc_ctrl &= ~3;
297 cabc_ctrl |= (1 << 8) | (mode & 3);
298 acx565akm_write(ddata, MIPID_CMD_WRITE_CABC, (u8 *)&cabc_ctrl, 2);
299}
300
301static unsigned get_cabc_mode(struct panel_drv_data *ddata)
302{
303 return ddata->cabc_mode;
304}
305
306static unsigned get_hw_cabc_mode(struct panel_drv_data *ddata)
307{
308 u8 cabc_ctrl;
309
310 acx565akm_read(ddata, MIPID_CMD_READ_CABC, &cabc_ctrl, 1);
311 return cabc_ctrl & 3;
312}
313
314static void acx565akm_set_brightness(struct panel_drv_data *ddata, int level)
315{
316 int bv;
317
318 bv = level | (1 << 8);
319 acx565akm_write(ddata, MIPID_CMD_WRITE_DISP_BRIGHTNESS, (u8 *)&bv, 2);
320
321 if (level)
322 enable_backlight_ctrl(ddata, 1);
323 else
324 enable_backlight_ctrl(ddata, 0);
325}
326
327static int acx565akm_get_actual_brightness(struct panel_drv_data *ddata)
328{
329 u8 bv;
330
331 acx565akm_read(ddata, MIPID_CMD_READ_DISP_BRIGHTNESS, &bv, 1);
332
333 return bv;
334}
335
336
337static int acx565akm_bl_update_status(struct backlight_device *dev)
338{
339 struct panel_drv_data *ddata = dev_get_drvdata(&dev->dev);
340 int level;
341
342 dev_dbg(&ddata->spi->dev, "%s\n", __func__);
343
344 if (dev->props.fb_blank == FB_BLANK_UNBLANK &&
345 dev->props.power == FB_BLANK_UNBLANK)
346 level = dev->props.brightness;
347 else
348 level = 0;
349
350 if (ddata->has_bc)
351 acx565akm_set_brightness(ddata, level);
352 else
353 return -ENODEV;
354
355 return 0;
356}
357
358static int acx565akm_bl_get_intensity(struct backlight_device *dev)
359{
360 struct panel_drv_data *ddata = dev_get_drvdata(&dev->dev);
361
362 dev_dbg(&dev->dev, "%s\n", __func__);
363
364 if (!ddata->has_bc)
365 return -ENODEV;
366
367 if (dev->props.fb_blank == FB_BLANK_UNBLANK &&
368 dev->props.power == FB_BLANK_UNBLANK) {
369 if (ddata->has_bc)
370 return acx565akm_get_actual_brightness(ddata);
371 else
372 return dev->props.brightness;
373 }
374
375 return 0;
376}
377
378static int acx565akm_bl_update_status_locked(struct backlight_device *dev)
379{
380 struct panel_drv_data *ddata = dev_get_drvdata(&dev->dev);
381 int r;
382
383 mutex_lock(&ddata->mutex);
384 r = acx565akm_bl_update_status(dev);
385 mutex_unlock(&ddata->mutex);
386
387 return r;
388}
389
390static int acx565akm_bl_get_intensity_locked(struct backlight_device *dev)
391{
392 struct panel_drv_data *ddata = dev_get_drvdata(&dev->dev);
393 int r;
394
395 mutex_lock(&ddata->mutex);
396 r = acx565akm_bl_get_intensity(dev);
397 mutex_unlock(&ddata->mutex);
398
399 return r;
400}
401
402static const struct backlight_ops acx565akm_bl_ops = {
403 .get_brightness = acx565akm_bl_get_intensity_locked,
404 .update_status = acx565akm_bl_update_status_locked,
405};
406
407
408
409static const char * const cabc_modes[] = {
410 "off",
411 "ui",
412 "still-image",
413 "moving-image",
414};
415
416static ssize_t show_cabc_mode(struct device *dev,
417 struct device_attribute *attr,
418 char *buf)
419{
420 struct panel_drv_data *ddata = dev_get_drvdata(dev);
421 const char *mode_str;
422 int mode;
423 int len;
424
425 if (!ddata->has_cabc)
426 mode = 0;
427 else
428 mode = get_cabc_mode(ddata);
429 mode_str = "unknown";
430 if (mode >= 0 && mode < ARRAY_SIZE(cabc_modes))
431 mode_str = cabc_modes[mode];
432 len = snprintf(buf, PAGE_SIZE, "%s\n", mode_str);
433
434 return len < PAGE_SIZE - 1 ? len : PAGE_SIZE - 1;
435}
436
437static ssize_t store_cabc_mode(struct device *dev,
438 struct device_attribute *attr,
439 const char *buf, size_t count)
440{
441 struct panel_drv_data *ddata = dev_get_drvdata(dev);
442 int i;
443
444 for (i = 0; i < ARRAY_SIZE(cabc_modes); i++) {
445 const char *mode_str = cabc_modes[i];
446 int cmp_len = strlen(mode_str);
447
448 if (count > 0 && buf[count - 1] == '\n')
449 count--;
450 if (count != cmp_len)
451 continue;
452
453 if (strncmp(buf, mode_str, cmp_len) == 0)
454 break;
455 }
456
457 if (i == ARRAY_SIZE(cabc_modes))
458 return -EINVAL;
459
460 if (!ddata->has_cabc && i != 0)
461 return -EINVAL;
462
463 mutex_lock(&ddata->mutex);
464 set_cabc_mode(ddata, i);
465 mutex_unlock(&ddata->mutex);
466
467 return count;
468}
469
470static ssize_t show_cabc_available_modes(struct device *dev,
471 struct device_attribute *attr,
472 char *buf)
473{
474 struct panel_drv_data *ddata = dev_get_drvdata(dev);
475 int len;
476 int i;
477
478 if (!ddata->has_cabc)
479 return snprintf(buf, PAGE_SIZE, "%s\n", cabc_modes[0]);
480
481 for (i = 0, len = 0;
482 len < PAGE_SIZE && i < ARRAY_SIZE(cabc_modes); i++)
483 len += snprintf(&buf[len], PAGE_SIZE - len, "%s%s%s",
484 i ? " " : "", cabc_modes[i],
485 i == ARRAY_SIZE(cabc_modes) - 1 ? "\n" : "");
486
487 return len < PAGE_SIZE ? len : PAGE_SIZE - 1;
488}
489
490static DEVICE_ATTR(cabc_mode, S_IRUGO | S_IWUSR,
491 show_cabc_mode, store_cabc_mode);
492static DEVICE_ATTR(cabc_available_modes, S_IRUGO,
493 show_cabc_available_modes, NULL);
494
495static struct attribute *bldev_attrs[] = {
496 &dev_attr_cabc_mode.attr,
497 &dev_attr_cabc_available_modes.attr,
498 NULL,
499};
500
501static const struct attribute_group bldev_attr_group = {
502 .attrs = bldev_attrs,
503};
504
505static int acx565akm_connect(struct omap_dss_device *dssdev)
506{
507 struct panel_drv_data *ddata = to_panel_data(dssdev);
508 struct omap_dss_device *in = ddata->in;
509
510 if (omapdss_device_is_connected(dssdev))
511 return 0;
512
513 return in->ops.sdi->connect(in, dssdev);
514}
515
516static void acx565akm_disconnect(struct omap_dss_device *dssdev)
517{
518 struct panel_drv_data *ddata = to_panel_data(dssdev);
519 struct omap_dss_device *in = ddata->in;
520
521 if (!omapdss_device_is_connected(dssdev))
522 return;
523
524 in->ops.sdi->disconnect(in, dssdev);
525}
526
527static int acx565akm_panel_power_on(struct omap_dss_device *dssdev)
528{
529 struct panel_drv_data *ddata = to_panel_data(dssdev);
530 struct omap_dss_device *in = ddata->in;
531 int r;
532
533 dev_dbg(&ddata->spi->dev, "%s\n", __func__);
534
535 in->ops.sdi->set_timings(in, &ddata->videomode);
536
537 if (ddata->datapairs > 0)
538 in->ops.sdi->set_datapairs(in, ddata->datapairs);
539
540 r = in->ops.sdi->enable(in);
541 if (r) {
542 pr_err("%s sdi enable failed\n", __func__);
543 return r;
544 }
545
546
547 msleep(50);
548
549 if (gpio_is_valid(ddata->reset_gpio))
550 gpio_set_value(ddata->reset_gpio, 1);
551
552 if (ddata->enabled) {
553 dev_dbg(&ddata->spi->dev, "panel already enabled\n");
554 return 0;
555 }
556
557
558
559
560
561
562
563
564
565 msleep(120);
566
567 set_sleep_mode(ddata, 0);
568 ddata->enabled = 1;
569
570
571 usleep_range(5000, 10000);
572 set_display_state(ddata, 1);
573 set_cabc_mode(ddata, ddata->cabc_mode);
574
575 return acx565akm_bl_update_status(ddata->bl_dev);
576}
577
578static void acx565akm_panel_power_off(struct omap_dss_device *dssdev)
579{
580 struct panel_drv_data *ddata = to_panel_data(dssdev);
581 struct omap_dss_device *in = ddata->in;
582
583 dev_dbg(dssdev->dev, "%s\n", __func__);
584
585 if (!ddata->enabled)
586 return;
587
588 set_display_state(ddata, 0);
589 set_sleep_mode(ddata, 1);
590 ddata->enabled = 0;
591
592
593
594
595
596
597 msleep(50);
598
599 if (gpio_is_valid(ddata->reset_gpio))
600 gpio_set_value(ddata->reset_gpio, 0);
601
602
603 msleep(100);
604
605 in->ops.sdi->disable(in);
606}
607
608static int acx565akm_enable(struct omap_dss_device *dssdev)
609{
610 struct panel_drv_data *ddata = to_panel_data(dssdev);
611 int r;
612
613 dev_dbg(dssdev->dev, "%s\n", __func__);
614
615 if (!omapdss_device_is_connected(dssdev))
616 return -ENODEV;
617
618 if (omapdss_device_is_enabled(dssdev))
619 return 0;
620
621 mutex_lock(&ddata->mutex);
622 r = acx565akm_panel_power_on(dssdev);
623 mutex_unlock(&ddata->mutex);
624 if (r)
625 return r;
626
627 dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
628
629 return 0;
630}
631
632static void acx565akm_disable(struct omap_dss_device *dssdev)
633{
634 struct panel_drv_data *ddata = to_panel_data(dssdev);
635
636 dev_dbg(dssdev->dev, "%s\n", __func__);
637
638 if (!omapdss_device_is_enabled(dssdev))
639 return;
640
641 mutex_lock(&ddata->mutex);
642 acx565akm_panel_power_off(dssdev);
643 mutex_unlock(&ddata->mutex);
644
645 dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
646}
647
648static void acx565akm_set_timings(struct omap_dss_device *dssdev,
649 struct omap_video_timings *timings)
650{
651 struct panel_drv_data *ddata = to_panel_data(dssdev);
652 struct omap_dss_device *in = ddata->in;
653
654 ddata->videomode = *timings;
655 dssdev->panel.timings = *timings;
656
657 in->ops.sdi->set_timings(in, timings);
658}
659
660static void acx565akm_get_timings(struct omap_dss_device *dssdev,
661 struct omap_video_timings *timings)
662{
663 struct panel_drv_data *ddata = to_panel_data(dssdev);
664
665 *timings = ddata->videomode;
666}
667
668static int acx565akm_check_timings(struct omap_dss_device *dssdev,
669 struct omap_video_timings *timings)
670{
671 struct panel_drv_data *ddata = to_panel_data(dssdev);
672 struct omap_dss_device *in = ddata->in;
673
674 return in->ops.sdi->check_timings(in, timings);
675}
676
677static struct omap_dss_driver acx565akm_ops = {
678 .connect = acx565akm_connect,
679 .disconnect = acx565akm_disconnect,
680
681 .enable = acx565akm_enable,
682 .disable = acx565akm_disable,
683
684 .set_timings = acx565akm_set_timings,
685 .get_timings = acx565akm_get_timings,
686 .check_timings = acx565akm_check_timings,
687
688 .get_resolution = omapdss_default_get_resolution,
689};
690
691static int acx565akm_probe_pdata(struct spi_device *spi)
692{
693 const struct panel_acx565akm_platform_data *pdata;
694 struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev);
695 struct omap_dss_device *dssdev, *in;
696
697 pdata = dev_get_platdata(&spi->dev);
698
699 ddata->reset_gpio = pdata->reset_gpio;
700
701 in = omap_dss_find_output(pdata->source);
702 if (in == NULL) {
703 dev_err(&spi->dev, "failed to find video source '%s'\n",
704 pdata->source);
705 return -EPROBE_DEFER;
706 }
707 ddata->in = in;
708
709 ddata->datapairs = pdata->datapairs;
710
711 dssdev = &ddata->dssdev;
712 dssdev->name = pdata->name;
713
714 return 0;
715}
716
717static int acx565akm_probe_of(struct spi_device *spi)
718{
719 struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev);
720 struct device_node *np = spi->dev.of_node;
721
722 ddata->reset_gpio = of_get_named_gpio(np, "reset-gpios", 0);
723
724 ddata->in = omapdss_of_find_source_for_first_ep(np);
725 if (IS_ERR(ddata->in)) {
726 dev_err(&spi->dev, "failed to find video source\n");
727 return PTR_ERR(ddata->in);
728 }
729
730 return 0;
731}
732
733static int acx565akm_probe(struct spi_device *spi)
734{
735 struct panel_drv_data *ddata;
736 struct omap_dss_device *dssdev;
737 struct backlight_device *bldev;
738 int max_brightness, brightness;
739 struct backlight_properties props;
740 int r;
741
742 dev_dbg(&spi->dev, "%s\n", __func__);
743
744 spi->mode = SPI_MODE_3;
745
746 ddata = devm_kzalloc(&spi->dev, sizeof(*ddata), GFP_KERNEL);
747 if (ddata == NULL)
748 return -ENOMEM;
749
750 dev_set_drvdata(&spi->dev, ddata);
751
752 ddata->spi = spi;
753
754 mutex_init(&ddata->mutex);
755
756 if (dev_get_platdata(&spi->dev)) {
757 r = acx565akm_probe_pdata(spi);
758 if (r)
759 return r;
760 } else if (spi->dev.of_node) {
761 r = acx565akm_probe_of(spi);
762 if (r)
763 return r;
764 } else {
765 dev_err(&spi->dev, "platform data missing!\n");
766 return -ENODEV;
767 }
768
769 if (gpio_is_valid(ddata->reset_gpio)) {
770 r = devm_gpio_request_one(&spi->dev, ddata->reset_gpio,
771 GPIOF_OUT_INIT_LOW, "lcd reset");
772 if (r)
773 goto err_gpio;
774 }
775
776 if (gpio_is_valid(ddata->reset_gpio))
777 gpio_set_value(ddata->reset_gpio, 1);
778
779
780
781
782
783 usleep_range(5000, 10000);
784
785 ddata->enabled = panel_enabled(ddata);
786
787 r = panel_detect(ddata);
788
789 if (!ddata->enabled && gpio_is_valid(ddata->reset_gpio))
790 gpio_set_value(ddata->reset_gpio, 0);
791
792 if (r) {
793 dev_err(&spi->dev, "%s panel detect error\n", __func__);
794 goto err_detect;
795 }
796
797 memset(&props, 0, sizeof(props));
798 props.fb_blank = FB_BLANK_UNBLANK;
799 props.power = FB_BLANK_UNBLANK;
800 props.type = BACKLIGHT_RAW;
801
802 bldev = backlight_device_register("acx565akm", &ddata->spi->dev,
803 ddata, &acx565akm_bl_ops, &props);
804 if (IS_ERR(bldev)) {
805 r = PTR_ERR(bldev);
806 goto err_reg_bl;
807 }
808 ddata->bl_dev = bldev;
809 if (ddata->has_cabc) {
810 r = sysfs_create_group(&bldev->dev.kobj, &bldev_attr_group);
811 if (r) {
812 dev_err(&bldev->dev,
813 "%s failed to create sysfs files\n", __func__);
814 goto err_sysfs;
815 }
816 ddata->cabc_mode = get_hw_cabc_mode(ddata);
817 }
818
819 max_brightness = 255;
820
821 if (ddata->has_bc)
822 brightness = acx565akm_get_actual_brightness(ddata);
823 else
824 brightness = 0;
825
826 bldev->props.max_brightness = max_brightness;
827 bldev->props.brightness = brightness;
828
829 acx565akm_bl_update_status(bldev);
830
831
832 ddata->videomode = acx565akm_panel_timings;
833
834 dssdev = &ddata->dssdev;
835 dssdev->dev = &spi->dev;
836 dssdev->driver = &acx565akm_ops;
837 dssdev->type = OMAP_DISPLAY_TYPE_SDI;
838 dssdev->owner = THIS_MODULE;
839 dssdev->panel.timings = ddata->videomode;
840
841 r = omapdss_register_display(dssdev);
842 if (r) {
843 dev_err(&spi->dev, "Failed to register panel\n");
844 goto err_reg;
845 }
846
847 return 0;
848
849err_reg:
850 sysfs_remove_group(&bldev->dev.kobj, &bldev_attr_group);
851err_sysfs:
852 backlight_device_unregister(bldev);
853err_reg_bl:
854err_detect:
855err_gpio:
856 omap_dss_put_device(ddata->in);
857 return r;
858}
859
860static int acx565akm_remove(struct spi_device *spi)
861{
862 struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev);
863 struct omap_dss_device *dssdev = &ddata->dssdev;
864 struct omap_dss_device *in = ddata->in;
865
866 dev_dbg(&ddata->spi->dev, "%s\n", __func__);
867
868 sysfs_remove_group(&ddata->bl_dev->dev.kobj, &bldev_attr_group);
869 backlight_device_unregister(ddata->bl_dev);
870
871 omapdss_unregister_display(dssdev);
872
873 acx565akm_disable(dssdev);
874 acx565akm_disconnect(dssdev);
875
876 omap_dss_put_device(in);
877
878 return 0;
879}
880
881static const struct of_device_id acx565akm_of_match[] = {
882 { .compatible = "omapdss,sony,acx565akm", },
883 {},
884};
885MODULE_DEVICE_TABLE(of, acx565akm_of_match);
886
887static struct spi_driver acx565akm_driver = {
888 .driver = {
889 .name = "acx565akm",
890 .of_match_table = acx565akm_of_match,
891 .suppress_bind_attrs = true,
892 },
893 .probe = acx565akm_probe,
894 .remove = acx565akm_remove,
895};
896
897module_spi_driver(acx565akm_driver);
898
899MODULE_AUTHOR("Nokia Corporation");
900MODULE_DESCRIPTION("acx565akm LCD Driver");
901MODULE_LICENSE("GPL");
902
