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23#include <linux/kernel.h>
24#include <linux/module.h>
25#include <linux/platform_device.h>
26#include <linux/delay.h>
27#include <linux/spi/spi.h>
28#include <linux/jiffies.h>
29#include <linux/sched.h>
30#include <linux/backlight.h>
31#include <linux/gpio/consumer.h>
32#include <linux/of.h>
33#include <linux/of_gpio.h>
34
35#include "../dss/omapdss.h"
36
37#define MIPID_CMD_READ_DISP_ID 0x04
38#define MIPID_CMD_READ_RED 0x06
39#define MIPID_CMD_READ_GREEN 0x07
40#define MIPID_CMD_READ_BLUE 0x08
41#define MIPID_CMD_READ_DISP_STATUS 0x09
42#define MIPID_CMD_RDDSDR 0x0F
43#define MIPID_CMD_SLEEP_IN 0x10
44#define MIPID_CMD_SLEEP_OUT 0x11
45#define MIPID_CMD_DISP_OFF 0x28
46#define MIPID_CMD_DISP_ON 0x29
47#define MIPID_CMD_WRITE_DISP_BRIGHTNESS 0x51
48#define MIPID_CMD_READ_DISP_BRIGHTNESS 0x52
49#define MIPID_CMD_WRITE_CTRL_DISP 0x53
50
51#define CTRL_DISP_BRIGHTNESS_CTRL_ON (1 << 5)
52#define CTRL_DISP_AMBIENT_LIGHT_CTRL_ON (1 << 4)
53#define CTRL_DISP_BACKLIGHT_ON (1 << 2)
54#define CTRL_DISP_AUTO_BRIGHTNESS_ON (1 << 1)
55
56#define MIPID_CMD_READ_CTRL_DISP 0x54
57#define MIPID_CMD_WRITE_CABC 0x55
58#define MIPID_CMD_READ_CABC 0x56
59
60#define MIPID_VER_LPH8923 3
61#define MIPID_VER_LS041Y3 4
62#define MIPID_VER_L4F00311 8
63#define MIPID_VER_ACX565AKM 9
64
65struct panel_drv_data {
66 struct omap_dss_device dssdev;
67 struct omap_dss_device *in;
68
69 int reset_gpio;
70
71 struct videomode vm;
72
73 char *name;
74 int enabled;
75 int model;
76 int revision;
77 u8 display_id[3];
78 unsigned has_bc:1;
79 unsigned has_cabc:1;
80 unsigned cabc_mode;
81 unsigned long hw_guard_end;
82
83
84 unsigned long hw_guard_wait;
85
86 struct spi_device *spi;
87 struct mutex mutex;
88
89 struct backlight_device *bl_dev;
90};
91
92static const struct videomode acx565akm_panel_vm = {
93 .hactive = 800,
94 .vactive = 480,
95 .pixelclock = 24000000,
96 .hfront_porch = 28,
97 .hsync_len = 4,
98 .hback_porch = 24,
99 .vfront_porch = 3,
100 .vsync_len = 3,
101 .vback_porch = 4,
102
103 .flags = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW |
104 DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_SYNC_NEGEDGE |
105 DISPLAY_FLAGS_PIXDATA_POSEDGE,
106};
107
108#define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev)
109
110static void acx565akm_transfer(struct panel_drv_data *ddata, int cmd,
111 const u8 *wbuf, int wlen, u8 *rbuf, int rlen)
112{
113 struct spi_message m;
114 struct spi_transfer *x, xfer[5];
115 int r;
116
117 BUG_ON(ddata->spi == NULL);
118
119 spi_message_init(&m);
120
121 memset(xfer, 0, sizeof(xfer));
122 x = &xfer[0];
123
124 cmd &= 0xff;
125 x->tx_buf = &cmd;
126 x->bits_per_word = 9;
127 x->len = 2;
128
129 if (rlen > 1 && wlen == 0) {
130
131
132
133
134
135 x->bits_per_word = 10;
136 cmd <<= 1;
137 }
138 spi_message_add_tail(x, &m);
139
140 if (wlen) {
141 x++;
142 x->tx_buf = wbuf;
143 x->len = wlen;
144 x->bits_per_word = 9;
145 spi_message_add_tail(x, &m);
146 }
147
148 if (rlen) {
149 x++;
150 x->rx_buf = rbuf;
151 x->len = rlen;
152 spi_message_add_tail(x, &m);
153 }
154
155 r = spi_sync(ddata->spi, &m);
156 if (r < 0)
157 dev_dbg(&ddata->spi->dev, "spi_sync %d\n", r);
158}
159
160static inline void acx565akm_cmd(struct panel_drv_data *ddata, int cmd)
161{
162 acx565akm_transfer(ddata, cmd, NULL, 0, NULL, 0);
163}
164
165static inline void acx565akm_write(struct panel_drv_data *ddata,
166 int reg, const u8 *buf, int len)
167{
168 acx565akm_transfer(ddata, reg, buf, len, NULL, 0);
169}
170
171static inline void acx565akm_read(struct panel_drv_data *ddata,
172 int reg, u8 *buf, int len)
173{
174 acx565akm_transfer(ddata, reg, NULL, 0, buf, len);
175}
176
177static void hw_guard_start(struct panel_drv_data *ddata, int guard_msec)
178{
179 ddata->hw_guard_wait = msecs_to_jiffies(guard_msec);
180 ddata->hw_guard_end = jiffies + ddata->hw_guard_wait;
181}
182
183static void hw_guard_wait(struct panel_drv_data *ddata)
184{
185 unsigned long wait = ddata->hw_guard_end - jiffies;
186
187 if ((long)wait > 0 && wait <= ddata->hw_guard_wait) {
188 set_current_state(TASK_UNINTERRUPTIBLE);
189 schedule_timeout(wait);
190 }
191}
192
193static void set_sleep_mode(struct panel_drv_data *ddata, int on)
194{
195 int cmd;
196
197 if (on)
198 cmd = MIPID_CMD_SLEEP_IN;
199 else
200 cmd = MIPID_CMD_SLEEP_OUT;
201
202
203
204
205 hw_guard_wait(ddata);
206 acx565akm_cmd(ddata, cmd);
207 hw_guard_start(ddata, 120);
208}
209
210static void set_display_state(struct panel_drv_data *ddata, int enabled)
211{
212 int cmd = enabled ? MIPID_CMD_DISP_ON : MIPID_CMD_DISP_OFF;
213
214 acx565akm_cmd(ddata, cmd);
215}
216
217static int panel_enabled(struct panel_drv_data *ddata)
218{
219 u32 disp_status;
220 int enabled;
221
222 acx565akm_read(ddata, MIPID_CMD_READ_DISP_STATUS,
223 (u8 *)&disp_status, 4);
224 disp_status = __be32_to_cpu(disp_status);
225 enabled = (disp_status & (1 << 17)) && (disp_status & (1 << 10));
226 dev_dbg(&ddata->spi->dev,
227 "LCD panel %senabled by bootloader (status 0x%04x)\n",
228 enabled ? "" : "not ", disp_status);
229 return enabled;
230}
231
232static int panel_detect(struct panel_drv_data *ddata)
233{
234 acx565akm_read(ddata, MIPID_CMD_READ_DISP_ID, ddata->display_id, 3);
235 dev_dbg(&ddata->spi->dev, "MIPI display ID: %02x%02x%02x\n",
236 ddata->display_id[0],
237 ddata->display_id[1],
238 ddata->display_id[2]);
239
240 switch (ddata->display_id[0]) {
241 case 0x10:
242 ddata->model = MIPID_VER_ACX565AKM;
243 ddata->name = "acx565akm";
244 ddata->has_bc = 1;
245 ddata->has_cabc = 1;
246 break;
247 case 0x29:
248 ddata->model = MIPID_VER_L4F00311;
249 ddata->name = "l4f00311";
250 break;
251 case 0x45:
252 ddata->model = MIPID_VER_LPH8923;
253 ddata->name = "lph8923";
254 break;
255 case 0x83:
256 ddata->model = MIPID_VER_LS041Y3;
257 ddata->name = "ls041y3";
258 break;
259 default:
260 ddata->name = "unknown";
261 dev_err(&ddata->spi->dev, "invalid display ID\n");
262 return -ENODEV;
263 }
264
265 ddata->revision = ddata->display_id[1];
266
267 dev_info(&ddata->spi->dev, "omapfb: %s rev %02x LCD detected\n",
268 ddata->name, ddata->revision);
269
270 return 0;
271}
272
273
274
275static void enable_backlight_ctrl(struct panel_drv_data *ddata, int enable)
276{
277 u16 ctrl;
278
279 acx565akm_read(ddata, MIPID_CMD_READ_CTRL_DISP, (u8 *)&ctrl, 1);
280 if (enable) {
281 ctrl |= CTRL_DISP_BRIGHTNESS_CTRL_ON |
282 CTRL_DISP_BACKLIGHT_ON;
283 } else {
284 ctrl &= ~(CTRL_DISP_BRIGHTNESS_CTRL_ON |
285 CTRL_DISP_BACKLIGHT_ON);
286 }
287
288 ctrl |= 1 << 8;
289 acx565akm_write(ddata, MIPID_CMD_WRITE_CTRL_DISP, (u8 *)&ctrl, 2);
290}
291
292static void set_cabc_mode(struct panel_drv_data *ddata, unsigned mode)
293{
294 u16 cabc_ctrl;
295
296 ddata->cabc_mode = mode;
297 if (!ddata->enabled)
298 return;
299 cabc_ctrl = 0;
300 acx565akm_read(ddata, MIPID_CMD_READ_CABC, (u8 *)&cabc_ctrl, 1);
301 cabc_ctrl &= ~3;
302 cabc_ctrl |= (1 << 8) | (mode & 3);
303 acx565akm_write(ddata, MIPID_CMD_WRITE_CABC, (u8 *)&cabc_ctrl, 2);
304}
305
306static unsigned get_cabc_mode(struct panel_drv_data *ddata)
307{
308 return ddata->cabc_mode;
309}
310
311static unsigned get_hw_cabc_mode(struct panel_drv_data *ddata)
312{
313 u8 cabc_ctrl;
314
315 acx565akm_read(ddata, MIPID_CMD_READ_CABC, &cabc_ctrl, 1);
316 return cabc_ctrl & 3;
317}
318
319static void acx565akm_set_brightness(struct panel_drv_data *ddata, int level)
320{
321 int bv;
322
323 bv = level | (1 << 8);
324 acx565akm_write(ddata, MIPID_CMD_WRITE_DISP_BRIGHTNESS, (u8 *)&bv, 2);
325
326 if (level)
327 enable_backlight_ctrl(ddata, 1);
328 else
329 enable_backlight_ctrl(ddata, 0);
330}
331
332static int acx565akm_get_actual_brightness(struct panel_drv_data *ddata)
333{
334 u8 bv;
335
336 acx565akm_read(ddata, MIPID_CMD_READ_DISP_BRIGHTNESS, &bv, 1);
337
338 return bv;
339}
340
341
342static int acx565akm_bl_update_status(struct backlight_device *dev)
343{
344 struct panel_drv_data *ddata = dev_get_drvdata(&dev->dev);
345 int level;
346
347 dev_dbg(&ddata->spi->dev, "%s\n", __func__);
348
349 if (dev->props.fb_blank == FB_BLANK_UNBLANK &&
350 dev->props.power == FB_BLANK_UNBLANK)
351 level = dev->props.brightness;
352 else
353 level = 0;
354
355 if (ddata->has_bc)
356 acx565akm_set_brightness(ddata, level);
357 else
358 return -ENODEV;
359
360 return 0;
361}
362
363static int acx565akm_bl_get_intensity(struct backlight_device *dev)
364{
365 struct panel_drv_data *ddata = dev_get_drvdata(&dev->dev);
366
367 dev_dbg(&dev->dev, "%s\n", __func__);
368
369 if (!ddata->has_bc)
370 return -ENODEV;
371
372 if (dev->props.fb_blank == FB_BLANK_UNBLANK &&
373 dev->props.power == FB_BLANK_UNBLANK) {
374 if (ddata->has_bc)
375 return acx565akm_get_actual_brightness(ddata);
376 else
377 return dev->props.brightness;
378 }
379
380 return 0;
381}
382
383static int acx565akm_bl_update_status_locked(struct backlight_device *dev)
384{
385 struct panel_drv_data *ddata = dev_get_drvdata(&dev->dev);
386 int r;
387
388 mutex_lock(&ddata->mutex);
389 r = acx565akm_bl_update_status(dev);
390 mutex_unlock(&ddata->mutex);
391
392 return r;
393}
394
395static int acx565akm_bl_get_intensity_locked(struct backlight_device *dev)
396{
397 struct panel_drv_data *ddata = dev_get_drvdata(&dev->dev);
398 int r;
399
400 mutex_lock(&ddata->mutex);
401 r = acx565akm_bl_get_intensity(dev);
402 mutex_unlock(&ddata->mutex);
403
404 return r;
405}
406
407static const struct backlight_ops acx565akm_bl_ops = {
408 .get_brightness = acx565akm_bl_get_intensity_locked,
409 .update_status = acx565akm_bl_update_status_locked,
410};
411
412
413
414static const char * const cabc_modes[] = {
415 "off",
416 "ui",
417 "still-image",
418 "moving-image",
419};
420
421static ssize_t show_cabc_mode(struct device *dev,
422 struct device_attribute *attr,
423 char *buf)
424{
425 struct panel_drv_data *ddata = dev_get_drvdata(dev);
426 const char *mode_str;
427 int mode;
428 int len;
429
430 if (!ddata->has_cabc)
431 mode = 0;
432 else
433 mode = get_cabc_mode(ddata);
434 mode_str = "unknown";
435 if (mode >= 0 && mode < ARRAY_SIZE(cabc_modes))
436 mode_str = cabc_modes[mode];
437 len = snprintf(buf, PAGE_SIZE, "%s\n", mode_str);
438
439 return len < PAGE_SIZE - 1 ? len : PAGE_SIZE - 1;
440}
441
442static ssize_t store_cabc_mode(struct device *dev,
443 struct device_attribute *attr,
444 const char *buf, size_t count)
445{
446 struct panel_drv_data *ddata = dev_get_drvdata(dev);
447 int i;
448
449 for (i = 0; i < ARRAY_SIZE(cabc_modes); i++) {
450 const char *mode_str = cabc_modes[i];
451 int cmp_len = strlen(mode_str);
452
453 if (count > 0 && buf[count - 1] == '\n')
454 count--;
455 if (count != cmp_len)
456 continue;
457
458 if (strncmp(buf, mode_str, cmp_len) == 0)
459 break;
460 }
461
462 if (i == ARRAY_SIZE(cabc_modes))
463 return -EINVAL;
464
465 if (!ddata->has_cabc && i != 0)
466 return -EINVAL;
467
468 mutex_lock(&ddata->mutex);
469 set_cabc_mode(ddata, i);
470 mutex_unlock(&ddata->mutex);
471
472 return count;
473}
474
475static ssize_t show_cabc_available_modes(struct device *dev,
476 struct device_attribute *attr,
477 char *buf)
478{
479 struct panel_drv_data *ddata = dev_get_drvdata(dev);
480 int len;
481 int i;
482
483 if (!ddata->has_cabc)
484 return snprintf(buf, PAGE_SIZE, "%s\n", cabc_modes[0]);
485
486 for (i = 0, len = 0;
487 len < PAGE_SIZE && i < ARRAY_SIZE(cabc_modes); i++)
488 len += snprintf(&buf[len], PAGE_SIZE - len, "%s%s%s",
489 i ? " " : "", cabc_modes[i],
490 i == ARRAY_SIZE(cabc_modes) - 1 ? "\n" : "");
491
492 return len < PAGE_SIZE ? len : PAGE_SIZE - 1;
493}
494
495static DEVICE_ATTR(cabc_mode, S_IRUGO | S_IWUSR,
496 show_cabc_mode, store_cabc_mode);
497static DEVICE_ATTR(cabc_available_modes, S_IRUGO,
498 show_cabc_available_modes, NULL);
499
500static struct attribute *bldev_attrs[] = {
501 &dev_attr_cabc_mode.attr,
502 &dev_attr_cabc_available_modes.attr,
503 NULL,
504};
505
506static const struct attribute_group bldev_attr_group = {
507 .attrs = bldev_attrs,
508};
509
510static int acx565akm_connect(struct omap_dss_device *dssdev)
511{
512 struct panel_drv_data *ddata = to_panel_data(dssdev);
513 struct omap_dss_device *in = ddata->in;
514 int r;
515
516 if (omapdss_device_is_connected(dssdev))
517 return 0;
518
519 r = in->ops.sdi->connect(in, dssdev);
520 if (r)
521 return r;
522
523 return 0;
524}
525
526static void acx565akm_disconnect(struct omap_dss_device *dssdev)
527{
528 struct panel_drv_data *ddata = to_panel_data(dssdev);
529 struct omap_dss_device *in = ddata->in;
530
531 if (!omapdss_device_is_connected(dssdev))
532 return;
533
534 in->ops.sdi->disconnect(in, dssdev);
535}
536
537static int acx565akm_panel_power_on(struct omap_dss_device *dssdev)
538{
539 struct panel_drv_data *ddata = to_panel_data(dssdev);
540 struct omap_dss_device *in = ddata->in;
541 int r;
542
543 dev_dbg(&ddata->spi->dev, "%s\n", __func__);
544
545 in->ops.sdi->set_timings(in, &ddata->vm);
546
547 r = in->ops.sdi->enable(in);
548 if (r) {
549 pr_err("%s sdi enable failed\n", __func__);
550 return r;
551 }
552
553
554 msleep(50);
555
556 if (gpio_is_valid(ddata->reset_gpio))
557 gpio_set_value(ddata->reset_gpio, 1);
558
559 if (ddata->enabled) {
560 dev_dbg(&ddata->spi->dev, "panel already enabled\n");
561 return 0;
562 }
563
564
565
566
567
568
569
570
571
572 msleep(120);
573
574 set_sleep_mode(ddata, 0);
575 ddata->enabled = 1;
576
577
578 usleep_range(5000, 10000);
579 set_display_state(ddata, 1);
580 set_cabc_mode(ddata, ddata->cabc_mode);
581
582 return acx565akm_bl_update_status(ddata->bl_dev);
583}
584
585static void acx565akm_panel_power_off(struct omap_dss_device *dssdev)
586{
587 struct panel_drv_data *ddata = to_panel_data(dssdev);
588 struct omap_dss_device *in = ddata->in;
589
590 dev_dbg(dssdev->dev, "%s\n", __func__);
591
592 if (!ddata->enabled)
593 return;
594
595 set_display_state(ddata, 0);
596 set_sleep_mode(ddata, 1);
597 ddata->enabled = 0;
598
599
600
601
602
603
604 msleep(50);
605
606 if (gpio_is_valid(ddata->reset_gpio))
607 gpio_set_value(ddata->reset_gpio, 0);
608
609
610 msleep(100);
611
612 in->ops.sdi->disable(in);
613}
614
615static int acx565akm_enable(struct omap_dss_device *dssdev)
616{
617 struct panel_drv_data *ddata = to_panel_data(dssdev);
618 int r;
619
620 dev_dbg(dssdev->dev, "%s\n", __func__);
621
622 if (!omapdss_device_is_connected(dssdev))
623 return -ENODEV;
624
625 if (omapdss_device_is_enabled(dssdev))
626 return 0;
627
628 mutex_lock(&ddata->mutex);
629 r = acx565akm_panel_power_on(dssdev);
630 mutex_unlock(&ddata->mutex);
631 if (r)
632 return r;
633
634 dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
635
636 return 0;
637}
638
639static void acx565akm_disable(struct omap_dss_device *dssdev)
640{
641 struct panel_drv_data *ddata = to_panel_data(dssdev);
642
643 dev_dbg(dssdev->dev, "%s\n", __func__);
644
645 if (!omapdss_device_is_enabled(dssdev))
646 return;
647
648 mutex_lock(&ddata->mutex);
649 acx565akm_panel_power_off(dssdev);
650 mutex_unlock(&ddata->mutex);
651
652 dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
653}
654
655static void acx565akm_set_timings(struct omap_dss_device *dssdev,
656 struct videomode *vm)
657{
658 struct panel_drv_data *ddata = to_panel_data(dssdev);
659 struct omap_dss_device *in = ddata->in;
660
661 ddata->vm = *vm;
662 dssdev->panel.vm = *vm;
663
664 in->ops.sdi->set_timings(in, vm);
665}
666
667static void acx565akm_get_timings(struct omap_dss_device *dssdev,
668 struct videomode *vm)
669{
670 struct panel_drv_data *ddata = to_panel_data(dssdev);
671
672 *vm = ddata->vm;
673}
674
675static int acx565akm_check_timings(struct omap_dss_device *dssdev,
676 struct videomode *vm)
677{
678 struct panel_drv_data *ddata = to_panel_data(dssdev);
679 struct omap_dss_device *in = ddata->in;
680
681 return in->ops.sdi->check_timings(in, vm);
682}
683
684static struct omap_dss_driver acx565akm_ops = {
685 .connect = acx565akm_connect,
686 .disconnect = acx565akm_disconnect,
687
688 .enable = acx565akm_enable,
689 .disable = acx565akm_disable,
690
691 .set_timings = acx565akm_set_timings,
692 .get_timings = acx565akm_get_timings,
693 .check_timings = acx565akm_check_timings,
694};
695
696static int acx565akm_probe_of(struct spi_device *spi)
697{
698 struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev);
699 struct device_node *np = spi->dev.of_node;
700
701 ddata->reset_gpio = of_get_named_gpio(np, "reset-gpios", 0);
702
703 ddata->in = omapdss_of_find_source_for_first_ep(np);
704 if (IS_ERR(ddata->in)) {
705 dev_err(&spi->dev, "failed to find video source\n");
706 return PTR_ERR(ddata->in);
707 }
708
709 return 0;
710}
711
712static int acx565akm_probe(struct spi_device *spi)
713{
714 struct panel_drv_data *ddata;
715 struct omap_dss_device *dssdev;
716 struct backlight_device *bldev;
717 int max_brightness, brightness;
718 struct backlight_properties props;
719 int r;
720
721 dev_dbg(&spi->dev, "%s\n", __func__);
722
723 if (!spi->dev.of_node)
724 return -ENODEV;
725
726 spi->mode = SPI_MODE_3;
727
728 ddata = devm_kzalloc(&spi->dev, sizeof(*ddata), GFP_KERNEL);
729 if (ddata == NULL)
730 return -ENOMEM;
731
732 dev_set_drvdata(&spi->dev, ddata);
733
734 ddata->spi = spi;
735
736 mutex_init(&ddata->mutex);
737
738 r = acx565akm_probe_of(spi);
739 if (r)
740 return r;
741
742 if (gpio_is_valid(ddata->reset_gpio)) {
743 r = devm_gpio_request_one(&spi->dev, ddata->reset_gpio,
744 GPIOF_OUT_INIT_LOW, "lcd reset");
745 if (r)
746 goto err_gpio;
747 }
748
749 if (gpio_is_valid(ddata->reset_gpio))
750 gpio_set_value(ddata->reset_gpio, 1);
751
752
753
754
755
756 usleep_range(5000, 10000);
757
758 ddata->enabled = panel_enabled(ddata);
759
760 r = panel_detect(ddata);
761
762 if (!ddata->enabled && gpio_is_valid(ddata->reset_gpio))
763 gpio_set_value(ddata->reset_gpio, 0);
764
765 if (r) {
766 dev_err(&spi->dev, "%s panel detect error\n", __func__);
767 goto err_detect;
768 }
769
770 memset(&props, 0, sizeof(props));
771 props.fb_blank = FB_BLANK_UNBLANK;
772 props.power = FB_BLANK_UNBLANK;
773 props.type = BACKLIGHT_RAW;
774
775 bldev = backlight_device_register("acx565akm", &ddata->spi->dev,
776 ddata, &acx565akm_bl_ops, &props);
777 if (IS_ERR(bldev)) {
778 r = PTR_ERR(bldev);
779 goto err_reg_bl;
780 }
781 ddata->bl_dev = bldev;
782 if (ddata->has_cabc) {
783 r = sysfs_create_group(&bldev->dev.kobj, &bldev_attr_group);
784 if (r) {
785 dev_err(&bldev->dev,
786 "%s failed to create sysfs files\n", __func__);
787 goto err_sysfs;
788 }
789 ddata->cabc_mode = get_hw_cabc_mode(ddata);
790 }
791
792 max_brightness = 255;
793
794 if (ddata->has_bc)
795 brightness = acx565akm_get_actual_brightness(ddata);
796 else
797 brightness = 0;
798
799 bldev->props.max_brightness = max_brightness;
800 bldev->props.brightness = brightness;
801
802 acx565akm_bl_update_status(bldev);
803
804
805 ddata->vm = acx565akm_panel_vm;
806
807 dssdev = &ddata->dssdev;
808 dssdev->dev = &spi->dev;
809 dssdev->driver = &acx565akm_ops;
810 dssdev->type = OMAP_DISPLAY_TYPE_SDI;
811 dssdev->owner = THIS_MODULE;
812 dssdev->panel.vm = ddata->vm;
813
814 r = omapdss_register_display(dssdev);
815 if (r) {
816 dev_err(&spi->dev, "Failed to register panel\n");
817 goto err_reg;
818 }
819
820 return 0;
821
822err_reg:
823 sysfs_remove_group(&bldev->dev.kobj, &bldev_attr_group);
824err_sysfs:
825 backlight_device_unregister(bldev);
826err_reg_bl:
827err_detect:
828err_gpio:
829 omap_dss_put_device(ddata->in);
830 return r;
831}
832
833static int acx565akm_remove(struct spi_device *spi)
834{
835 struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev);
836 struct omap_dss_device *dssdev = &ddata->dssdev;
837 struct omap_dss_device *in = ddata->in;
838
839 dev_dbg(&ddata->spi->dev, "%s\n", __func__);
840
841 sysfs_remove_group(&ddata->bl_dev->dev.kobj, &bldev_attr_group);
842 backlight_device_unregister(ddata->bl_dev);
843
844 omapdss_unregister_display(dssdev);
845
846 acx565akm_disable(dssdev);
847 acx565akm_disconnect(dssdev);
848
849 omap_dss_put_device(in);
850
851 return 0;
852}
853
854static const struct of_device_id acx565akm_of_match[] = {
855 { .compatible = "omapdss,sony,acx565akm", },
856 {},
857};
858MODULE_DEVICE_TABLE(of, acx565akm_of_match);
859
860static struct spi_driver acx565akm_driver = {
861 .driver = {
862 .name = "acx565akm",
863 .of_match_table = acx565akm_of_match,
864 .suppress_bind_attrs = true,
865 },
866 .probe = acx565akm_probe,
867 .remove = acx565akm_remove,
868};
869
870module_spi_driver(acx565akm_driver);
871
872MODULE_ALIAS("spi:sony,acx565akm");
873MODULE_AUTHOR("Nokia Corporation");
874MODULE_DESCRIPTION("acx565akm LCD Driver");
875MODULE_LICENSE("GPL");
876
