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23#include <linux/backlight.h>
24#include <linux/delay.h>
25#include <linux/gpio/consumer.h>
26#include <linux/jiffies.h>
27#include <linux/kernel.h>
28#include <linux/module.h>
29#include <linux/platform_device.h>
30#include <linux/sched.h>
31#include <linux/spi/spi.h>
32
33#include "../dss/omapdss.h"
34
35#define MIPID_CMD_READ_DISP_ID 0x04
36#define MIPID_CMD_READ_RED 0x06
37#define MIPID_CMD_READ_GREEN 0x07
38#define MIPID_CMD_READ_BLUE 0x08
39#define MIPID_CMD_READ_DISP_STATUS 0x09
40#define MIPID_CMD_RDDSDR 0x0F
41#define MIPID_CMD_SLEEP_IN 0x10
42#define MIPID_CMD_SLEEP_OUT 0x11
43#define MIPID_CMD_DISP_OFF 0x28
44#define MIPID_CMD_DISP_ON 0x29
45#define MIPID_CMD_WRITE_DISP_BRIGHTNESS 0x51
46#define MIPID_CMD_READ_DISP_BRIGHTNESS 0x52
47#define MIPID_CMD_WRITE_CTRL_DISP 0x53
48
49#define CTRL_DISP_BRIGHTNESS_CTRL_ON (1 << 5)
50#define CTRL_DISP_AMBIENT_LIGHT_CTRL_ON (1 << 4)
51#define CTRL_DISP_BACKLIGHT_ON (1 << 2)
52#define CTRL_DISP_AUTO_BRIGHTNESS_ON (1 << 1)
53
54#define MIPID_CMD_READ_CTRL_DISP 0x54
55#define MIPID_CMD_WRITE_CABC 0x55
56#define MIPID_CMD_READ_CABC 0x56
57
58#define MIPID_VER_LPH8923 3
59#define MIPID_VER_LS041Y3 4
60#define MIPID_VER_L4F00311 8
61#define MIPID_VER_ACX565AKM 9
62
63struct panel_drv_data {
64 struct omap_dss_device dssdev;
65
66 struct gpio_desc *reset_gpio;
67
68 struct videomode vm;
69
70 char *name;
71 int enabled;
72 int model;
73 int revision;
74 u8 display_id[3];
75 unsigned has_bc:1;
76 unsigned has_cabc:1;
77 unsigned cabc_mode;
78 unsigned long hw_guard_end;
79
80
81 unsigned long hw_guard_wait;
82
83 struct spi_device *spi;
84 struct mutex mutex;
85
86 struct backlight_device *bl_dev;
87};
88
89static const struct videomode acx565akm_panel_vm = {
90 .hactive = 800,
91 .vactive = 480,
92 .pixelclock = 24000000,
93 .hfront_porch = 28,
94 .hsync_len = 4,
95 .hback_porch = 24,
96 .vfront_porch = 3,
97 .vsync_len = 3,
98 .vback_porch = 4,
99
100 .flags = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW,
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 __be32 v;
215 u32 disp_status;
216 int enabled;
217
218 acx565akm_read(ddata, MIPID_CMD_READ_DISP_STATUS, (u8 *)&v, 4);
219 disp_status = __be32_to_cpu(v);
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 int 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 int get_cabc_mode(struct panel_drv_data *ddata)
302{
303 return ddata->cabc_mode;
304}
305
306static unsigned int 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 *src,
506 struct omap_dss_device *dst)
507{
508 return 0;
509}
510
511static void acx565akm_disconnect(struct omap_dss_device *src,
512 struct omap_dss_device *dst)
513{
514}
515
516static int acx565akm_panel_power_on(struct omap_dss_device *dssdev)
517{
518 struct panel_drv_data *ddata = to_panel_data(dssdev);
519 struct omap_dss_device *src = dssdev->src;
520 int r;
521
522 dev_dbg(&ddata->spi->dev, "%s\n", __func__);
523
524 r = src->ops->enable(src);
525 if (r) {
526 pr_err("%s sdi enable failed\n", __func__);
527 return r;
528 }
529
530
531 msleep(50);
532
533 if (ddata->reset_gpio)
534 gpiod_set_value(ddata->reset_gpio, 1);
535
536 if (ddata->enabled) {
537 dev_dbg(&ddata->spi->dev, "panel already enabled\n");
538 return 0;
539 }
540
541
542
543
544
545
546
547
548
549 msleep(120);
550
551 set_sleep_mode(ddata, 0);
552 ddata->enabled = 1;
553
554
555 usleep_range(5000, 10000);
556 set_display_state(ddata, 1);
557 set_cabc_mode(ddata, ddata->cabc_mode);
558
559 return acx565akm_bl_update_status(ddata->bl_dev);
560}
561
562static void acx565akm_panel_power_off(struct omap_dss_device *dssdev)
563{
564 struct panel_drv_data *ddata = to_panel_data(dssdev);
565 struct omap_dss_device *src = dssdev->src;
566
567 dev_dbg(dssdev->dev, "%s\n", __func__);
568
569 if (!ddata->enabled)
570 return;
571
572 set_display_state(ddata, 0);
573 set_sleep_mode(ddata, 1);
574 ddata->enabled = 0;
575
576
577
578
579
580
581 msleep(50);
582
583 if (ddata->reset_gpio)
584 gpiod_set_value(ddata->reset_gpio, 0);
585
586
587 msleep(100);
588
589 src->ops->disable(src);
590}
591
592static int acx565akm_enable(struct omap_dss_device *dssdev)
593{
594 struct panel_drv_data *ddata = to_panel_data(dssdev);
595 int r;
596
597 dev_dbg(dssdev->dev, "%s\n", __func__);
598
599 if (!omapdss_device_is_connected(dssdev))
600 return -ENODEV;
601
602 if (omapdss_device_is_enabled(dssdev))
603 return 0;
604
605 mutex_lock(&ddata->mutex);
606 r = acx565akm_panel_power_on(dssdev);
607 mutex_unlock(&ddata->mutex);
608 if (r)
609 return r;
610
611 dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
612
613 return 0;
614}
615
616static void acx565akm_disable(struct omap_dss_device *dssdev)
617{
618 struct panel_drv_data *ddata = to_panel_data(dssdev);
619
620 dev_dbg(dssdev->dev, "%s\n", __func__);
621
622 if (!omapdss_device_is_enabled(dssdev))
623 return;
624
625 mutex_lock(&ddata->mutex);
626 acx565akm_panel_power_off(dssdev);
627 mutex_unlock(&ddata->mutex);
628
629 dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
630}
631
632static void acx565akm_get_timings(struct omap_dss_device *dssdev,
633 struct videomode *vm)
634{
635 struct panel_drv_data *ddata = to_panel_data(dssdev);
636
637 *vm = ddata->vm;
638}
639
640static const struct omap_dss_device_ops acx565akm_ops = {
641 .connect = acx565akm_connect,
642 .disconnect = acx565akm_disconnect,
643
644 .enable = acx565akm_enable,
645 .disable = acx565akm_disable,
646
647 .get_timings = acx565akm_get_timings,
648};
649
650static int acx565akm_probe(struct spi_device *spi)
651{
652 struct panel_drv_data *ddata;
653 struct omap_dss_device *dssdev;
654 struct backlight_device *bldev;
655 int max_brightness, brightness;
656 struct backlight_properties props;
657 struct gpio_desc *gpio;
658 int r;
659
660 dev_dbg(&spi->dev, "%s\n", __func__);
661
662 spi->mode = SPI_MODE_3;
663
664 ddata = devm_kzalloc(&spi->dev, sizeof(*ddata), GFP_KERNEL);
665 if (ddata == NULL)
666 return -ENOMEM;
667
668 dev_set_drvdata(&spi->dev, ddata);
669
670 ddata->spi = spi;
671
672 mutex_init(&ddata->mutex);
673
674 gpio = devm_gpiod_get_optional(&spi->dev, "reset", GPIOD_OUT_LOW);
675 if (IS_ERR(gpio)) {
676 dev_err(&spi->dev, "failed to parse reset gpio\n");
677 return PTR_ERR(gpio);
678 }
679
680 ddata->reset_gpio = gpio;
681
682 if (ddata->reset_gpio)
683 gpiod_set_value(ddata->reset_gpio, 1);
684
685
686
687
688
689 usleep_range(5000, 10000);
690
691 ddata->enabled = panel_enabled(ddata);
692
693 r = panel_detect(ddata);
694
695 if (!ddata->enabled && ddata->reset_gpio)
696 gpiod_set_value(ddata->reset_gpio, 0);
697
698 if (r) {
699 dev_err(&spi->dev, "%s panel detect error\n", __func__);
700 return r;
701 }
702
703 memset(&props, 0, sizeof(props));
704 props.fb_blank = FB_BLANK_UNBLANK;
705 props.power = FB_BLANK_UNBLANK;
706 props.type = BACKLIGHT_RAW;
707
708 bldev = backlight_device_register("acx565akm", &ddata->spi->dev,
709 ddata, &acx565akm_bl_ops, &props);
710 if (IS_ERR(bldev))
711 return PTR_ERR(bldev);
712 ddata->bl_dev = bldev;
713 if (ddata->has_cabc) {
714 r = sysfs_create_group(&bldev->dev.kobj, &bldev_attr_group);
715 if (r) {
716 dev_err(&bldev->dev,
717 "%s failed to create sysfs files\n", __func__);
718 goto err_backlight_unregister;
719 }
720 ddata->cabc_mode = get_hw_cabc_mode(ddata);
721 }
722
723 max_brightness = 255;
724
725 if (ddata->has_bc)
726 brightness = acx565akm_get_actual_brightness(ddata);
727 else
728 brightness = 0;
729
730 bldev->props.max_brightness = max_brightness;
731 bldev->props.brightness = brightness;
732
733 acx565akm_bl_update_status(bldev);
734
735
736 ddata->vm = acx565akm_panel_vm;
737
738 dssdev = &ddata->dssdev;
739 dssdev->dev = &spi->dev;
740 dssdev->ops = &acx565akm_ops;
741 dssdev->type = OMAP_DISPLAY_TYPE_SDI;
742 dssdev->owner = THIS_MODULE;
743 dssdev->of_ports = BIT(0);
744 dssdev->bus_flags = DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_SYNC_NEGEDGE
745 | DRM_BUS_FLAG_PIXDATA_POSEDGE;
746
747 omapdss_display_init(dssdev);
748 omapdss_device_register(dssdev);
749
750 return 0;
751
752err_backlight_unregister:
753 backlight_device_unregister(bldev);
754 return r;
755}
756
757static int acx565akm_remove(struct spi_device *spi)
758{
759 struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev);
760 struct omap_dss_device *dssdev = &ddata->dssdev;
761
762 dev_dbg(&ddata->spi->dev, "%s\n", __func__);
763
764 sysfs_remove_group(&ddata->bl_dev->dev.kobj, &bldev_attr_group);
765 backlight_device_unregister(ddata->bl_dev);
766
767 omapdss_device_unregister(dssdev);
768
769 acx565akm_disable(dssdev);
770
771 return 0;
772}
773
774static const struct of_device_id acx565akm_of_match[] = {
775 { .compatible = "omapdss,sony,acx565akm", },
776 {},
777};
778MODULE_DEVICE_TABLE(of, acx565akm_of_match);
779
780static struct spi_driver acx565akm_driver = {
781 .driver = {
782 .name = "acx565akm",
783 .of_match_table = acx565akm_of_match,
784 .suppress_bind_attrs = true,
785 },
786 .probe = acx565akm_probe,
787 .remove = acx565akm_remove,
788};
789
790module_spi_driver(acx565akm_driver);
791
792MODULE_ALIAS("spi:sony,acx565akm");
793MODULE_AUTHOR("Nokia Corporation");
794MODULE_DESCRIPTION("acx565akm LCD Driver");
795MODULE_LICENSE("GPL");
796
