2 * Taal DSI command mode panel
4 * Copyright (C) 2009 Nokia Corporation
5 * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
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.
11 * This program is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 * You should have received a copy of the GNU General Public License along with
17 * this program. If not, see <http://www.gnu.org/licenses/>.
22 #include <linux/module.h>
23 #include <linux/delay.h>
24 #include <linux/err.h>
25 #include <linux/jiffies.h>
26 #include <linux/sched.h>
27 #include <linux/backlight.h>
29 #include <linux/interrupt.h>
30 #include <linux/gpio.h>
31 #include <linux/completion.h>
32 #include <linux/workqueue.h>
33 #include <linux/slab.h>
34 #include <linux/mutex.h>
36 #include <plat/display.h>
38 /* DSI Virtual channel. Hardcoded for now. */
41 #define DCS_READ_NUM_ERRORS 0x05
42 #define DCS_READ_POWER_MODE 0x0a
43 #define DCS_READ_MADCTL 0x0b
44 #define DCS_READ_PIXEL_FORMAT 0x0c
45 #define DCS_RDDSDR 0x0f
46 #define DCS_SLEEP_IN 0x10
47 #define DCS_SLEEP_OUT 0x11
48 #define DCS_DISPLAY_OFF 0x28
49 #define DCS_DISPLAY_ON 0x29
50 #define DCS_COLUMN_ADDR 0x2a
51 #define DCS_PAGE_ADDR 0x2b
52 #define DCS_MEMORY_WRITE 0x2c
53 #define DCS_TEAR_OFF 0x34
54 #define DCS_TEAR_ON 0x35
55 #define DCS_MEM_ACC_CTRL 0x36
56 #define DCS_PIXEL_FORMAT 0x3a
57 #define DCS_BRIGHTNESS 0x51
58 #define DCS_CTRL_DISPLAY 0x53
59 #define DCS_WRITE_CABC 0x55
60 #define DCS_READ_CABC 0x56
61 #define DCS_GET_ID1 0xda
62 #define DCS_GET_ID2 0xdb
63 #define DCS_GET_ID3 0xdc
65 /* #define TAAL_USE_ESD_CHECK */
66 #define TAAL_ESD_CHECK_PERIOD msecs_to_jiffies(5000)
68 static int _taal_enable_te(struct omap_dss_device *dssdev, bool enable);
73 struct backlight_device *bldev;
75 unsigned long hw_guard_end; /* next value of jiffies when we can
76 * issue the next sleep in/out command
78 unsigned long hw_guard_wait; /* max guard time in jiffies */
80 struct omap_dss_device *dssdev;
88 struct completion te_completion;
97 struct workqueue_struct *esd_wq;
98 struct delayed_work esd_work;
101 static void taal_esd_work(struct work_struct *work);
103 static void hw_guard_start(struct taal_data *td, int guard_msec)
105 td->hw_guard_wait = msecs_to_jiffies(guard_msec);
106 td->hw_guard_end = jiffies + td->hw_guard_wait;
109 static void hw_guard_wait(struct taal_data *td)
111 unsigned long wait = td->hw_guard_end - jiffies;
113 if ((long)wait > 0 && wait <= td->hw_guard_wait) {
114 set_current_state(TASK_UNINTERRUPTIBLE);
115 schedule_timeout(wait);
119 static int taal_dcs_read_1(u8 dcs_cmd, u8 *data)
124 r = dsi_vc_dcs_read(TCH, dcs_cmd, buf, 1);
134 static int taal_dcs_write_0(u8 dcs_cmd)
136 return dsi_vc_dcs_write(TCH, &dcs_cmd, 1);
139 static int taal_dcs_write_1(u8 dcs_cmd, u8 param)
144 return dsi_vc_dcs_write(TCH, buf, 2);
147 static int taal_sleep_in(struct taal_data *td)
156 r = dsi_vc_dcs_write_nosync(TCH, &cmd, 1);
160 hw_guard_start(td, 120);
167 static int taal_sleep_out(struct taal_data *td)
173 r = taal_dcs_write_0(DCS_SLEEP_OUT);
177 hw_guard_start(td, 120);
184 static int taal_get_id(u8 *id1, u8 *id2, u8 *id3)
188 r = taal_dcs_read_1(DCS_GET_ID1, id1);
191 r = taal_dcs_read_1(DCS_GET_ID2, id2);
194 r = taal_dcs_read_1(DCS_GET_ID3, id3);
201 static int taal_set_addr_mode(u8 rotate, bool mirror)
207 r = taal_dcs_read_1(DCS_READ_MADCTL, &mode);
238 mode &= ~((1<<7) | (1<<6) | (1<<5));
239 mode |= (b7 << 7) | (b6 << 6) | (b5 << 5);
241 return taal_dcs_write_1(DCS_MEM_ACC_CTRL, mode);
244 static int taal_set_update_window(u16 x, u16 y, u16 w, u16 h)
253 buf[0] = DCS_COLUMN_ADDR;
254 buf[1] = (x1 >> 8) & 0xff;
255 buf[2] = (x1 >> 0) & 0xff;
256 buf[3] = (x2 >> 8) & 0xff;
257 buf[4] = (x2 >> 0) & 0xff;
259 r = dsi_vc_dcs_write_nosync(TCH, buf, sizeof(buf));
263 buf[0] = DCS_PAGE_ADDR;
264 buf[1] = (y1 >> 8) & 0xff;
265 buf[2] = (y1 >> 0) & 0xff;
266 buf[3] = (y2 >> 8) & 0xff;
267 buf[4] = (y2 >> 0) & 0xff;
269 r = dsi_vc_dcs_write_nosync(TCH, buf, sizeof(buf));
273 dsi_vc_send_bta_sync(TCH);
278 static int taal_bl_update_status(struct backlight_device *dev)
280 struct omap_dss_device *dssdev = dev_get_drvdata(&dev->dev);
281 struct taal_data *td = dev_get_drvdata(&dssdev->dev);
285 if (dev->props.fb_blank == FB_BLANK_UNBLANK &&
286 dev->props.power == FB_BLANK_UNBLANK)
287 level = dev->props.brightness;
291 dev_dbg(&dssdev->dev, "update brightness to %d\n", level);
293 if (td->use_dsi_bl) {
296 r = taal_dcs_write_1(DCS_BRIGHTNESS, level);
302 if (!dssdev->set_backlight)
305 r = dssdev->set_backlight(dssdev, level);
313 static int taal_bl_get_intensity(struct backlight_device *dev)
315 if (dev->props.fb_blank == FB_BLANK_UNBLANK &&
316 dev->props.power == FB_BLANK_UNBLANK)
317 return dev->props.brightness;
322 static struct backlight_ops taal_bl_ops = {
323 .get_brightness = taal_bl_get_intensity,
324 .update_status = taal_bl_update_status,
327 static void taal_get_timings(struct omap_dss_device *dssdev,
328 struct omap_video_timings *timings)
330 *timings = dssdev->panel.timings;
333 static void taal_get_resolution(struct omap_dss_device *dssdev,
334 u16 *xres, u16 *yres)
336 struct taal_data *td = dev_get_drvdata(&dssdev->dev);
338 if (td->rotate == 0 || td->rotate == 2) {
339 *xres = dssdev->panel.timings.x_res;
340 *yres = dssdev->panel.timings.y_res;
342 *yres = dssdev->panel.timings.x_res;
343 *xres = dssdev->panel.timings.y_res;
347 static irqreturn_t taal_te_isr(int irq, void *data)
349 struct omap_dss_device *dssdev = data;
350 struct taal_data *td = dev_get_drvdata(&dssdev->dev);
352 complete_all(&td->te_completion);
357 static ssize_t taal_num_errors_show(struct device *dev,
358 struct device_attribute *attr, char *buf)
360 struct omap_dss_device *dssdev = to_dss_device(dev);
361 struct taal_data *td = dev_get_drvdata(&dssdev->dev);
367 r = taal_dcs_read_1(DCS_READ_NUM_ERRORS, &errors);
376 return snprintf(buf, PAGE_SIZE, "%d\n", errors);
379 static ssize_t taal_hw_revision_show(struct device *dev,
380 struct device_attribute *attr, char *buf)
382 struct omap_dss_device *dssdev = to_dss_device(dev);
383 struct taal_data *td = dev_get_drvdata(&dssdev->dev);
389 r = taal_get_id(&id1, &id2, &id3);
398 return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x\n", id1, id2, id3);
401 static const char *cabc_modes[] = {
402 "off", /* used also always when CABC is not supported */
408 static ssize_t show_cabc_mode(struct device *dev,
409 struct device_attribute *attr,
412 struct omap_dss_device *dssdev = to_dss_device(dev);
413 struct taal_data *td = dev_get_drvdata(&dssdev->dev);
414 const char *mode_str;
418 mode = td->cabc_mode;
420 mode_str = "unknown";
421 if (mode >= 0 && mode < ARRAY_SIZE(cabc_modes))
422 mode_str = cabc_modes[mode];
423 len = snprintf(buf, PAGE_SIZE, "%s\n", mode_str);
425 return len < PAGE_SIZE - 1 ? len : PAGE_SIZE - 1;
428 static ssize_t store_cabc_mode(struct device *dev,
429 struct device_attribute *attr,
430 const char *buf, size_t count)
432 struct omap_dss_device *dssdev = to_dss_device(dev);
433 struct taal_data *td = dev_get_drvdata(&dssdev->dev);
436 for (i = 0; i < ARRAY_SIZE(cabc_modes); i++) {
437 if (sysfs_streq(cabc_modes[i], buf))
441 if (i == ARRAY_SIZE(cabc_modes))
446 if (!td->cabc_broken)
447 taal_dcs_write_1(DCS_WRITE_CABC, i);
456 static ssize_t show_cabc_available_modes(struct device *dev,
457 struct device_attribute *attr,
464 len < PAGE_SIZE && i < ARRAY_SIZE(cabc_modes); i++)
465 len += snprintf(&buf[len], PAGE_SIZE - len, "%s%s%s",
466 i ? " " : "", cabc_modes[i],
467 i == ARRAY_SIZE(cabc_modes) - 1 ? "\n" : "");
469 return len < PAGE_SIZE ? len : PAGE_SIZE - 1;
472 static DEVICE_ATTR(num_dsi_errors, S_IRUGO, taal_num_errors_show, NULL);
473 static DEVICE_ATTR(hw_revision, S_IRUGO, taal_hw_revision_show, NULL);
474 static DEVICE_ATTR(cabc_mode, S_IRUGO | S_IWUSR,
475 show_cabc_mode, store_cabc_mode);
476 static DEVICE_ATTR(cabc_available_modes, S_IRUGO,
477 show_cabc_available_modes, NULL);
479 static struct attribute *taal_attrs[] = {
480 &dev_attr_num_dsi_errors.attr,
481 &dev_attr_hw_revision.attr,
482 &dev_attr_cabc_mode.attr,
483 &dev_attr_cabc_available_modes.attr,
487 static struct attribute_group taal_attr_group = {
491 static int taal_probe(struct omap_dss_device *dssdev)
493 struct backlight_properties props;
494 struct taal_data *td;
495 struct backlight_device *bldev;
498 const struct omap_video_timings taal_panel_timings = {
503 dev_dbg(&dssdev->dev, "probe\n");
505 dssdev->panel.config = OMAP_DSS_LCD_TFT;
506 dssdev->panel.timings = taal_panel_timings;
507 dssdev->ctrl.pixel_size = 24;
509 td = kzalloc(sizeof(*td), GFP_KERNEL);
516 mutex_init(&td->lock);
518 td->esd_wq = create_singlethread_workqueue("taal_esd");
519 if (td->esd_wq == NULL) {
520 dev_err(&dssdev->dev, "can't create ESD workqueue\n");
524 INIT_DELAYED_WORK_DEFERRABLE(&td->esd_work, taal_esd_work);
526 dev_set_drvdata(&dssdev->dev, td);
528 /* if no platform set_backlight() defined, presume DSI backlight
530 memset(&props, 0, sizeof(struct backlight_properties));
531 if (!dssdev->set_backlight)
532 td->use_dsi_bl = true;
535 props.max_brightness = 255;
537 props.max_brightness = 127;
538 bldev = backlight_device_register("taal", &dssdev->dev, dssdev,
539 &taal_bl_ops, &props);
547 bldev->props.fb_blank = FB_BLANK_UNBLANK;
548 bldev->props.power = FB_BLANK_UNBLANK;
550 bldev->props.brightness = 255;
552 bldev->props.brightness = 127;
554 taal_bl_update_status(bldev);
556 if (dssdev->phy.dsi.ext_te) {
557 int gpio = dssdev->phy.dsi.ext_te_gpio;
559 r = gpio_request(gpio, "taal irq");
561 dev_err(&dssdev->dev, "GPIO request failed\n");
565 gpio_direction_input(gpio);
567 r = request_irq(gpio_to_irq(gpio), taal_te_isr,
568 IRQF_DISABLED | IRQF_TRIGGER_RISING,
569 "taal vsync", dssdev);
572 dev_err(&dssdev->dev, "IRQ request failed\n");
577 init_completion(&td->te_completion);
579 td->use_ext_te = true;
582 r = sysfs_create_group(&dssdev->dev.kobj, &taal_attr_group);
584 dev_err(&dssdev->dev, "failed to create sysfs files\n");
590 if (td->use_ext_te) {
591 int gpio = dssdev->phy.dsi.ext_te_gpio;
592 free_irq(gpio_to_irq(gpio), dssdev);
596 backlight_device_unregister(bldev);
598 cancel_delayed_work_sync(&td->esd_work);
599 destroy_workqueue(td->esd_wq);
606 static void taal_remove(struct omap_dss_device *dssdev)
608 struct taal_data *td = dev_get_drvdata(&dssdev->dev);
609 struct backlight_device *bldev;
611 dev_dbg(&dssdev->dev, "remove\n");
613 sysfs_remove_group(&dssdev->dev.kobj, &taal_attr_group);
615 if (td->use_ext_te) {
616 int gpio = dssdev->phy.dsi.ext_te_gpio;
617 free_irq(gpio_to_irq(gpio), dssdev);
622 bldev->props.power = FB_BLANK_POWERDOWN;
623 taal_bl_update_status(bldev);
624 backlight_device_unregister(bldev);
626 cancel_delayed_work_sync(&td->esd_work);
627 destroy_workqueue(td->esd_wq);
632 static int taal_power_on(struct omap_dss_device *dssdev)
634 struct taal_data *td = dev_get_drvdata(&dssdev->dev);
638 if (dssdev->platform_enable) {
639 r = dssdev->platform_enable(dssdev);
644 /* it seems we have to wait a bit until taal is ready */
649 r = omapdss_dsi_display_enable(dssdev);
651 dev_err(&dssdev->dev, "failed to enable DSI\n");
655 omapdss_dsi_vc_enable_hs(TCH, false);
657 r = taal_sleep_out(td);
661 r = taal_get_id(&id1, &id2, &id3);
665 /* on early revisions CABC is broken */
666 if (id2 == 0x00 || id2 == 0xff || id2 == 0x81)
667 td->cabc_broken = true;
669 taal_dcs_write_1(DCS_BRIGHTNESS, 0xff);
670 taal_dcs_write_1(DCS_CTRL_DISPLAY, (1<<2) | (1<<5)); /* BL | BCTRL */
672 taal_dcs_write_1(DCS_PIXEL_FORMAT, 0x7); /* 24bit/pixel */
674 taal_set_addr_mode(td->rotate, td->mirror);
675 if (!td->cabc_broken)
676 taal_dcs_write_1(DCS_WRITE_CABC, td->cabc_mode);
678 taal_dcs_write_0(DCS_DISPLAY_ON);
680 r = _taal_enable_te(dssdev, td->te_enabled);
684 #ifdef TAAL_USE_ESD_CHECK
685 queue_delayed_work(td->esd_wq, &td->esd_work, TAAL_ESD_CHECK_PERIOD);
690 if (!td->intro_printed) {
691 dev_info(&dssdev->dev, "revision %02x.%02x.%02x\n",
694 dev_info(&dssdev->dev,
695 "old Taal version, CABC disabled\n");
696 td->intro_printed = true;
699 omapdss_dsi_vc_enable_hs(TCH, true);
705 omapdss_dsi_display_disable(dssdev);
708 if (dssdev->platform_disable)
709 dssdev->platform_disable(dssdev);
714 static void taal_power_off(struct omap_dss_device *dssdev)
716 struct taal_data *td = dev_get_drvdata(&dssdev->dev);
720 cancel_delayed_work(&td->esd_work);
722 taal_dcs_write_0(DCS_DISPLAY_OFF);
725 /* wait a bit so that the message goes through */
728 omapdss_dsi_display_disable(dssdev);
730 if (dssdev->platform_disable)
731 dssdev->platform_disable(dssdev);
738 static int taal_enable(struct omap_dss_device *dssdev)
740 struct taal_data *td = dev_get_drvdata(&dssdev->dev);
743 dev_dbg(&dssdev->dev, "enable\n");
745 mutex_lock(&td->lock);
747 if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED) {
752 r = taal_power_on(dssdev);
756 dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
758 mutex_unlock(&td->lock);
762 dev_dbg(&dssdev->dev, "enable failed\n");
763 mutex_unlock(&td->lock);
767 static void taal_disable(struct omap_dss_device *dssdev)
769 struct taal_data *td = dev_get_drvdata(&dssdev->dev);
771 dev_dbg(&dssdev->dev, "disable\n");
773 mutex_lock(&td->lock);
775 if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
776 taal_power_off(dssdev);
778 dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
780 mutex_unlock(&td->lock);
783 static int taal_suspend(struct omap_dss_device *dssdev)
785 struct taal_data *td = dev_get_drvdata(&dssdev->dev);
788 dev_dbg(&dssdev->dev, "suspend\n");
790 mutex_lock(&td->lock);
792 if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE) {
797 taal_power_off(dssdev);
798 dssdev->state = OMAP_DSS_DISPLAY_SUSPENDED;
800 mutex_unlock(&td->lock);
804 mutex_unlock(&td->lock);
808 static int taal_resume(struct omap_dss_device *dssdev)
810 struct taal_data *td = dev_get_drvdata(&dssdev->dev);
813 dev_dbg(&dssdev->dev, "resume\n");
815 mutex_lock(&td->lock);
817 if (dssdev->state != OMAP_DSS_DISPLAY_SUSPENDED) {
822 r = taal_power_on(dssdev);
823 dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
825 mutex_unlock(&td->lock);
829 mutex_unlock(&td->lock);
833 static void taal_framedone_cb(int err, void *data)
835 struct omap_dss_device *dssdev = data;
836 dev_dbg(&dssdev->dev, "framedone, err %d\n", err);
840 static int taal_update(struct omap_dss_device *dssdev,
841 u16 x, u16 y, u16 w, u16 h)
843 struct taal_data *td = dev_get_drvdata(&dssdev->dev);
846 dev_dbg(&dssdev->dev, "update %d, %d, %d x %d\n", x, y, w, h);
848 mutex_lock(&td->lock);
856 r = omap_dsi_prepare_update(dssdev, &x, &y, &w, &h);
860 r = taal_set_update_window(x, y, w, h);
864 r = omap_dsi_update(dssdev, TCH, x, y, w, h,
865 taal_framedone_cb, dssdev);
869 /* note: no bus_unlock here. unlock is in framedone_cb */
870 mutex_unlock(&td->lock);
874 mutex_unlock(&td->lock);
878 static int taal_sync(struct omap_dss_device *dssdev)
880 struct taal_data *td = dev_get_drvdata(&dssdev->dev);
882 dev_dbg(&dssdev->dev, "sync\n");
884 mutex_lock(&td->lock);
887 mutex_unlock(&td->lock);
889 dev_dbg(&dssdev->dev, "sync done\n");
894 static int _taal_enable_te(struct omap_dss_device *dssdev, bool enable)
896 struct taal_data *td = dev_get_drvdata(&dssdev->dev);
899 td->te_enabled = enable;
902 r = taal_dcs_write_1(DCS_TEAR_ON, 0);
904 r = taal_dcs_write_0(DCS_TEAR_OFF);
906 omapdss_dsi_enable_te(dssdev, enable);
908 /* XXX for some reason, DSI TE breaks if we don't wait here.
909 * Panel bug? Needs more studying */
915 static int taal_enable_te(struct omap_dss_device *dssdev, bool enable)
917 struct taal_data *td = dev_get_drvdata(&dssdev->dev);
920 mutex_lock(&td->lock);
923 r = _taal_enable_te(dssdev, enable);
926 mutex_unlock(&td->lock);
931 static int taal_get_te(struct omap_dss_device *dssdev)
933 struct taal_data *td = dev_get_drvdata(&dssdev->dev);
936 mutex_lock(&td->lock);
938 mutex_unlock(&td->lock);
943 static int taal_rotate(struct omap_dss_device *dssdev, u8 rotate)
945 struct taal_data *td = dev_get_drvdata(&dssdev->dev);
948 dev_dbg(&dssdev->dev, "rotate %d\n", rotate);
950 mutex_lock(&td->lock);
954 r = taal_set_addr_mode(rotate, td->mirror);
962 mutex_unlock(&td->lock);
966 mutex_unlock(&td->lock);
970 static u8 taal_get_rotate(struct omap_dss_device *dssdev)
972 struct taal_data *td = dev_get_drvdata(&dssdev->dev);
975 mutex_lock(&td->lock);
977 mutex_unlock(&td->lock);
982 static int taal_mirror(struct omap_dss_device *dssdev, bool enable)
984 struct taal_data *td = dev_get_drvdata(&dssdev->dev);
987 dev_dbg(&dssdev->dev, "mirror %d\n", enable);
989 mutex_lock(&td->lock);
992 r = taal_set_addr_mode(td->rotate, enable);
1000 mutex_unlock(&td->lock);
1004 mutex_unlock(&td->lock);
1008 static bool taal_get_mirror(struct omap_dss_device *dssdev)
1010 struct taal_data *td = dev_get_drvdata(&dssdev->dev);
1013 mutex_lock(&td->lock);
1015 mutex_unlock(&td->lock);
1020 static int taal_run_test(struct omap_dss_device *dssdev, int test_num)
1022 struct taal_data *td = dev_get_drvdata(&dssdev->dev);
1026 mutex_lock(&td->lock);
1029 r = taal_dcs_read_1(DCS_GET_ID1, &id1);
1032 r = taal_dcs_read_1(DCS_GET_ID2, &id2);
1035 r = taal_dcs_read_1(DCS_GET_ID3, &id3);
1040 mutex_unlock(&td->lock);
1044 mutex_unlock(&td->lock);
1048 static int taal_memory_read(struct omap_dss_device *dssdev,
1049 void *buf, size_t size,
1050 u16 x, u16 y, u16 w, u16 h)
1055 unsigned buf_used = 0;
1056 struct taal_data *td = dev_get_drvdata(&dssdev->dev);
1058 if (size < w * h * 3)
1061 mutex_lock(&td->lock);
1068 size = min(w * h * 3,
1069 dssdev->panel.timings.x_res *
1070 dssdev->panel.timings.y_res * 3);
1074 /* plen 1 or 2 goes into short packet. until checksum error is fixed,
1075 * use short packets. plen 32 works, but bigger packets seem to cause
1082 taal_set_update_window(x, y, w, h);
1084 r = dsi_vc_set_max_rx_packet_size(TCH, plen);
1088 while (buf_used < size) {
1089 u8 dcs_cmd = first ? 0x2e : 0x3e;
1092 r = dsi_vc_dcs_read(TCH, dcs_cmd,
1093 buf + buf_used, size - buf_used);
1096 dev_err(&dssdev->dev, "read error\n");
1103 dev_err(&dssdev->dev, "short read\n");
1107 if (signal_pending(current)) {
1108 dev_err(&dssdev->dev, "signal pending, "
1109 "aborting memory read\n");
1118 dsi_vc_set_max_rx_packet_size(TCH, 1);
1122 mutex_unlock(&td->lock);
1126 static void taal_esd_work(struct work_struct *work)
1128 struct taal_data *td = container_of(work, struct taal_data,
1130 struct omap_dss_device *dssdev = td->dssdev;
1134 mutex_lock(&td->lock);
1137 mutex_unlock(&td->lock);
1143 r = taal_dcs_read_1(DCS_RDDSDR, &state1);
1145 dev_err(&dssdev->dev, "failed to read Taal status\n");
1149 /* Run self diagnostics */
1150 r = taal_sleep_out(td);
1152 dev_err(&dssdev->dev, "failed to run Taal self-diagnostics\n");
1156 r = taal_dcs_read_1(DCS_RDDSDR, &state2);
1158 dev_err(&dssdev->dev, "failed to read Taal status\n");
1162 /* Each sleep out command will trigger a self diagnostic and flip
1163 * Bit6 if the test passes.
1165 if (!((state1 ^ state2) & (1 << 6))) {
1166 dev_err(&dssdev->dev, "LCD self diagnostics failed\n");
1169 /* Self-diagnostics result is also shown on TE GPIO line. We need
1170 * to re-enable TE after self diagnostics */
1171 if (td->use_ext_te && td->te_enabled) {
1172 r = taal_dcs_write_1(DCS_TEAR_ON, 0);
1179 queue_delayed_work(td->esd_wq, &td->esd_work, TAAL_ESD_CHECK_PERIOD);
1181 mutex_unlock(&td->lock);
1184 dev_err(&dssdev->dev, "performing LCD reset\n");
1186 taal_power_off(dssdev);
1187 taal_power_on(dssdev);
1191 queue_delayed_work(td->esd_wq, &td->esd_work, TAAL_ESD_CHECK_PERIOD);
1193 mutex_unlock(&td->lock);
1196 static int taal_set_update_mode(struct omap_dss_device *dssdev,
1197 enum omap_dss_update_mode mode)
1199 if (mode != OMAP_DSS_UPDATE_MANUAL)
1204 static enum omap_dss_update_mode taal_get_update_mode(
1205 struct omap_dss_device *dssdev)
1207 return OMAP_DSS_UPDATE_MANUAL;
1210 static struct omap_dss_driver taal_driver = {
1211 .probe = taal_probe,
1212 .remove = taal_remove,
1214 .enable = taal_enable,
1215 .disable = taal_disable,
1216 .suspend = taal_suspend,
1217 .resume = taal_resume,
1219 .set_update_mode = taal_set_update_mode,
1220 .get_update_mode = taal_get_update_mode,
1222 .update = taal_update,
1225 .get_resolution = taal_get_resolution,
1226 .get_recommended_bpp = omapdss_default_get_recommended_bpp,
1228 .enable_te = taal_enable_te,
1229 .get_te = taal_get_te,
1231 .set_rotate = taal_rotate,
1232 .get_rotate = taal_get_rotate,
1233 .set_mirror = taal_mirror,
1234 .get_mirror = taal_get_mirror,
1235 .run_test = taal_run_test,
1236 .memory_read = taal_memory_read,
1238 .get_timings = taal_get_timings,
1242 .owner = THIS_MODULE,
1246 static int __init taal_init(void)
1248 omap_dss_register_driver(&taal_driver);
1253 static void __exit taal_exit(void)
1255 omap_dss_unregister_driver(&taal_driver);
1258 module_init(taal_init);
1259 module_exit(taal_exit);
1261 MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>");
1262 MODULE_DESCRIPTION("Taal Driver");
1263 MODULE_LICENSE("GPL");