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authorTomi Valkeinen <tomi.valkeinen@ti.com>2013-05-24 07:22:31 -0400
committerTomi Valkeinen <tomi.valkeinen@ti.com>2013-06-17 07:32:25 -0400
commit84192742d9c26d75f26751f9e692cc68230d43a5 (patch)
tree15cfeadc7f91a90d11ba156ebaf5bf6a750d73fe
parentdbc23840b4d70fd1c284987cea68a476e3634d5a (diff)
OMAPDSS: Add Sony ACX565AKM panel driver
Add Sony ACX565AKM panel driver which uses the new DSS device model and DSS ops. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Diffstat
-rw-r--r--drivers/video/omap2/displays-new/Kconfig6
-rw-r--r--drivers/video/omap2/displays-new/Makefile1
-rw-r--r--drivers/video/omap2/displays-new/panel-sony-acx565akm.c865
-rw-r--r--include/video/omap-panel-data.h16
4 files changed, 888 insertions, 0 deletions
diff --git a/drivers/video/omap2/displays-new/Kconfig b/drivers/video/omap2/displays-new/Kconfig
index efb72b352efd..25696583e206 100644
--- a/drivers/video/omap2/displays-new/Kconfig
+++ b/drivers/video/omap2/displays-new/Kconfig
@@ -38,4 +38,10 @@ config DISPLAY_PANEL_DSI_CM
38 help 38 help
39 Driver for generic DSI command mode panels. 39 Driver for generic DSI command mode panels.
40 40
41config DISPLAY_PANEL_SONY_ACX565AKM
42 tristate "ACX565AKM Panel"
43 depends on SPI && BACKLIGHT_CLASS_DEVICE
44 help
45 This is the LCD panel used on Nokia N900
46
41endmenu 47endmenu
diff --git a/drivers/video/omap2/displays-new/Makefile b/drivers/video/omap2/displays-new/Makefile
index 557c48226296..c07bd1e17f47 100644
--- a/drivers/video/omap2/displays-new/Makefile
+++ b/drivers/video/omap2/displays-new/Makefile
@@ -5,3 +5,4 @@ obj-$(CONFIG_DISPLAY_CONNECTOR_HDMI) += connector-hdmi.o
5obj-$(CONFIG_DISPLAY_CONNECTOR_ANALOG_TV) += connector-analog-tv.o 5obj-$(CONFIG_DISPLAY_CONNECTOR_ANALOG_TV) += connector-analog-tv.o
6obj-$(CONFIG_DISPLAY_PANEL_DPI) += panel-dpi.o 6obj-$(CONFIG_DISPLAY_PANEL_DPI) += panel-dpi.o
7obj-$(CONFIG_DISPLAY_PANEL_DSI_CM) += panel-dsi-cm.o 7obj-$(CONFIG_DISPLAY_PANEL_DSI_CM) += panel-dsi-cm.o
8obj-$(CONFIG_DISPLAY_PANEL_SONY_ACX565AKM) += panel-sony-acx565akm.o
diff --git a/drivers/video/omap2/displays-new/panel-sony-acx565akm.c b/drivers/video/omap2/displays-new/panel-sony-acx565akm.c
new file mode 100644
index 000000000000..e6d56f714ae4
--- /dev/null
+++ b/drivers/video/omap2/displays-new/panel-sony-acx565akm.c
@@ -0,0 +1,865 @@
1/*
2 * Sony ACX565AKM LCD Panel driver
3 *
4 * Copyright (C) 2010 Nokia Corporation
5 *
6 * Original Driver Author: Imre Deak <imre.deak@nokia.com>
7 * Based on panel-generic.c by Tomi Valkeinen <tomi.valkeinen@nokia.com>
8 * Adapted to new DSS2 framework: Roger Quadros <roger.quadros@nokia.com>
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License version 2 as published by
12 * the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful, but WITHOUT
15 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * more details.
18 *
19 * You should have received a copy of the GNU General Public License along with
20 * this program. If not, see <http://www.gnu.org/licenses/>.
21 */
22
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/fb.h>
32#include <linux/gpio.h>
33
34#include <video/omapdss.h>
35#include <video/omap-panel-data.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 int datapairs;
71
72 struct omap_video_timings videomode;
73
74 char *name;
75 int enabled;
76 int model;
77 int revision;
78 u8 display_id[3];
79 unsigned has_bc:1;
80 unsigned has_cabc:1;
81 unsigned cabc_mode;
82 unsigned long hw_guard_end; /* next value of jiffies
83 when we can issue the
84 next sleep in/out command */
85 unsigned long hw_guard_wait; /* max guard time in jiffies */
86
87 struct spi_device *spi;
88 struct mutex mutex;
89
90 struct backlight_device *bl_dev;
91};
92
93static const struct omap_video_timings acx565akm_panel_timings = {
94 .x_res = 800,
95 .y_res = 480,
96 .pixel_clock = 24000,
97 .hfp = 28,
98 .hsw = 4,
99 .hbp = 24,
100 .vfp = 3,
101 .vsw = 3,
102 .vbp = 4,
103
104 .vsync_level = OMAPDSS_SIG_ACTIVE_LOW,
105 .hsync_level = OMAPDSS_SIG_ACTIVE_LOW,
106
107 .data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE,
108 .de_level = OMAPDSS_SIG_ACTIVE_HIGH,
109 .sync_pclk_edge = OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES,
110};
111
112#define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev)
113
114static void acx565akm_transfer(struct panel_drv_data *ddata, int cmd,
115 const u8 *wbuf, int wlen, u8 *rbuf, int rlen)
116{
117 struct spi_message m;
118 struct spi_transfer *x, xfer[5];
119 int r;
120
121 BUG_ON(ddata->spi == NULL);
122
123 spi_message_init(&m);
124
125 memset(xfer, 0, sizeof(xfer));
126 x = &xfer[0];
127
128 cmd &= 0xff;
129 x->tx_buf = &cmd;
130 x->bits_per_word = 9;
131 x->len = 2;
132
133 if (rlen > 1 && wlen == 0) {
134 /*
135 * Between the command and the response data there is a
136 * dummy clock cycle. Add an extra bit after the command
137 * word to account for this.
138 */
139 x->bits_per_word = 10;
140 cmd <<= 1;
141 }
142 spi_message_add_tail(x, &m);
143
144 if (wlen) {
145 x++;
146 x->tx_buf = wbuf;
147 x->len = wlen;
148 x->bits_per_word = 9;
149 spi_message_add_tail(x, &m);
150 }
151
152 if (rlen) {
153 x++;
154 x->rx_buf = rbuf;
155 x->len = rlen;
156 spi_message_add_tail(x, &m);
157 }
158
159 r = spi_sync(ddata->spi, &m);
160 if (r < 0)
161 dev_dbg(&ddata->spi->dev, "spi_sync %d\n", r);
162}
163
164static inline void acx565akm_cmd(struct panel_drv_data *ddata, int cmd)
165{
166 acx565akm_transfer(ddata, cmd, NULL, 0, NULL, 0);
167}
168
169static inline void acx565akm_write(struct panel_drv_data *ddata,
170 int reg, const u8 *buf, int len)
171{
172 acx565akm_transfer(ddata, reg, buf, len, NULL, 0);
173}
174
175static inline void acx565akm_read(struct panel_drv_data *ddata,
176 int reg, u8 *buf, int len)
177{
178 acx565akm_transfer(ddata, reg, NULL, 0, buf, len);
179}
180
181static void hw_guard_start(struct panel_drv_data *ddata, int guard_msec)
182{
183 ddata->hw_guard_wait = msecs_to_jiffies(guard_msec);
184 ddata->hw_guard_end = jiffies + ddata->hw_guard_wait;
185}
186
187static void hw_guard_wait(struct panel_drv_data *ddata)
188{
189 unsigned long wait = ddata->hw_guard_end - jiffies;
190
191 if ((long)wait > 0 && wait <= ddata->hw_guard_wait) {
192 set_current_state(TASK_UNINTERRUPTIBLE);
193 schedule_timeout(wait);
194 }
195}
196
197static void set_sleep_mode(struct panel_drv_data *ddata, int on)
198{
199 int cmd;
200
201 if (on)
202 cmd = MIPID_CMD_SLEEP_IN;
203 else
204 cmd = MIPID_CMD_SLEEP_OUT;
205 /*
206 * We have to keep 120msec between sleep in/out commands.
207 * (8.2.15, 8.2.16).
208 */
209 hw_guard_wait(ddata);
210 acx565akm_cmd(ddata, cmd);
211 hw_guard_start(ddata, 120);
212}
213
214static void set_display_state(struct panel_drv_data *ddata, int enabled)
215{
216 int cmd = enabled ? MIPID_CMD_DISP_ON : MIPID_CMD_DISP_OFF;
217
218 acx565akm_cmd(ddata, cmd);
219}
220
221static int panel_enabled(struct panel_drv_data *ddata)
222{
223 u32 disp_status;
224 int enabled;
225
226 acx565akm_read(ddata, MIPID_CMD_READ_DISP_STATUS,
227 (u8 *)&disp_status, 4);
228 disp_status = __be32_to_cpu(disp_status);
229 enabled = (disp_status & (1 << 17)) && (disp_status & (1 << 10));
230 dev_dbg(&ddata->spi->dev,
231 "LCD panel %senabled by bootloader (status 0x%04x)\n",
232 enabled ? "" : "not ", disp_status);
233 return enabled;
234}
235
236static int panel_detect(struct panel_drv_data *ddata)
237{
238 acx565akm_read(ddata, MIPID_CMD_READ_DISP_ID, ddata->display_id, 3);
239 dev_dbg(&ddata->spi->dev, "MIPI display ID: %02x%02x%02x\n",
240 ddata->display_id[0],
241 ddata->display_id[1],
242 ddata->display_id[2]);
243
244 switch (ddata->display_id[0]) {
245 case 0x10:
246 ddata->model = MIPID_VER_ACX565AKM;
247 ddata->name = "acx565akm";
248 ddata->has_bc = 1;
249 ddata->has_cabc = 1;
250 break;
251 case 0x29:
252 ddata->model = MIPID_VER_L4F00311;
253 ddata->name = "l4f00311";
254 break;
255 case 0x45:
256 ddata->model = MIPID_VER_LPH8923;
257 ddata->name = "lph8923";
258 break;
259 case 0x83:
260 ddata->model = MIPID_VER_LS041Y3;
261 ddata->name = "ls041y3";
262 break;
263 default:
264 ddata->name = "unknown";
265 dev_err(&ddata->spi->dev, "invalid display ID\n");
266 return -ENODEV;
267 }
268
269 ddata->revision = ddata->display_id[1];
270
271 dev_info(&ddata->spi->dev, "omapfb: %s rev %02x LCD detected\n",
272 ddata->name, ddata->revision);
273
274 return 0;
275}
276
277/*----------------------Backlight Control-------------------------*/
278
279static void enable_backlight_ctrl(struct panel_drv_data *ddata, int enable)
280{
281 u16 ctrl;
282
283 acx565akm_read(ddata, MIPID_CMD_READ_CTRL_DISP, (u8 *)&ctrl, 1);
284 if (enable) {
285 ctrl |= CTRL_DISP_BRIGHTNESS_CTRL_ON |
286 CTRL_DISP_BACKLIGHT_ON;
287 } else {
288 ctrl &= ~(CTRL_DISP_BRIGHTNESS_CTRL_ON |
289 CTRL_DISP_BACKLIGHT_ON);
290 }
291
292 ctrl |= 1 << 8;
293 acx565akm_write(ddata, MIPID_CMD_WRITE_CTRL_DISP, (u8 *)&ctrl, 2);
294}
295
296static void set_cabc_mode(struct panel_drv_data *ddata, unsigned mode)
297{
298 u16 cabc_ctrl;
299
300 ddata->cabc_mode = mode;
301 if (!ddata->enabled)
302 return;
303 cabc_ctrl = 0;
304 acx565akm_read(ddata, MIPID_CMD_READ_CABC, (u8 *)&cabc_ctrl, 1);
305 cabc_ctrl &= ~3;
306 cabc_ctrl |= (1 << 8) | (mode & 3);
307 acx565akm_write(ddata, MIPID_CMD_WRITE_CABC, (u8 *)&cabc_ctrl, 2);
308}
309
310static unsigned get_cabc_mode(struct panel_drv_data *ddata)
311{
312 return ddata->cabc_mode;
313}
314
315static unsigned get_hw_cabc_mode(struct panel_drv_data *ddata)
316{
317 u8 cabc_ctrl;
318
319 acx565akm_read(ddata, MIPID_CMD_READ_CABC, &cabc_ctrl, 1);
320 return cabc_ctrl & 3;
321}
322
323static void acx565akm_set_brightness(struct panel_drv_data *ddata, int level)
324{
325 int bv;
326
327 bv = level | (1 << 8);
328 acx565akm_write(ddata, MIPID_CMD_WRITE_DISP_BRIGHTNESS, (u8 *)&bv, 2);
329
330 if (level)
331 enable_backlight_ctrl(ddata, 1);
332 else
333 enable_backlight_ctrl(ddata, 0);
334}
335
336static int acx565akm_get_actual_brightness(struct panel_drv_data *ddata)
337{
338 u8 bv;
339
340 acx565akm_read(ddata, MIPID_CMD_READ_DISP_BRIGHTNESS, &bv, 1);
341
342 return bv;
343}
344
345
346static int acx565akm_bl_update_status(struct backlight_device *dev)
347{
348 struct panel_drv_data *ddata = dev_get_drvdata(&dev->dev);
349 int r;
350 int level;
351
352 dev_dbg(&ddata->spi->dev, "%s\n", __func__);
353
354 mutex_lock(&ddata->mutex);
355
356 if (dev->props.fb_blank == FB_BLANK_UNBLANK &&
357 dev->props.power == FB_BLANK_UNBLANK)
358 level = dev->props.brightness;
359 else
360 level = 0;
361
362 r = 0;
363 if (ddata->has_bc)
364 acx565akm_set_brightness(ddata, level);
365 else
366 r = -ENODEV;
367
368 mutex_unlock(&ddata->mutex);
369
370 return r;
371}
372
373static int acx565akm_bl_get_intensity(struct backlight_device *dev)
374{
375 struct panel_drv_data *ddata = dev_get_drvdata(&dev->dev);
376
377 dev_dbg(&dev->dev, "%s\n", __func__);
378
379 if (!ddata->has_bc)
380 return -ENODEV;
381
382 if (dev->props.fb_blank == FB_BLANK_UNBLANK &&
383 dev->props.power == FB_BLANK_UNBLANK) {
384 if (ddata->has_bc)
385 return acx565akm_get_actual_brightness(ddata);
386 else
387 return dev->props.brightness;
388 }
389
390 return 0;
391}
392
393static const struct backlight_ops acx565akm_bl_ops = {
394 .get_brightness = acx565akm_bl_get_intensity,
395 .update_status = acx565akm_bl_update_status,
396};
397
398/*--------------------Auto Brightness control via Sysfs---------------------*/
399
400static const char * const cabc_modes[] = {
401 "off", /* always used when CABC is not supported */
402 "ui",
403 "still-image",
404 "moving-image",
405};
406
407static ssize_t show_cabc_mode(struct device *dev,
408 struct device_attribute *attr,
409 char *buf)
410{
411 struct panel_drv_data *ddata = dev_get_drvdata(dev);
412 const char *mode_str;
413 int mode;
414 int len;
415
416 if (!ddata->has_cabc)
417 mode = 0;
418 else
419 mode = get_cabc_mode(ddata);
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);
424
425 return len < PAGE_SIZE - 1 ? len : PAGE_SIZE - 1;
426}
427
428static ssize_t store_cabc_mode(struct device *dev,
429 struct device_attribute *attr,
430 const char *buf, size_t count)
431{
432 struct panel_drv_data *ddata = dev_get_drvdata(dev);
433 int i;
434
435 for (i = 0; i < ARRAY_SIZE(cabc_modes); i++) {
436 const char *mode_str = cabc_modes[i];
437 int cmp_len = strlen(mode_str);
438
439 if (count > 0 && buf[count - 1] == '\n')
440 count--;
441 if (count != cmp_len)
442 continue;
443
444 if (strncmp(buf, mode_str, cmp_len) == 0)
445 break;
446 }
447
448 if (i == ARRAY_SIZE(cabc_modes))
449 return -EINVAL;
450
451 if (!ddata->has_cabc && i != 0)
452 return -EINVAL;
453
454 mutex_lock(&ddata->mutex);
455 set_cabc_mode(ddata, i);
456 mutex_unlock(&ddata->mutex);
457
458 return count;
459}
460
461static ssize_t show_cabc_available_modes(struct device *dev,
462 struct device_attribute *attr,
463 char *buf)
464{
465 struct panel_drv_data *ddata = dev_get_drvdata(dev);
466 int len;
467 int i;
468
469 if (!ddata->has_cabc)
470 return snprintf(buf, PAGE_SIZE, "%s\n", cabc_modes[0]);
471
472 for (i = 0, len = 0;
473 len < PAGE_SIZE && i < ARRAY_SIZE(cabc_modes); i++)
474 len += snprintf(&buf[len], PAGE_SIZE - len, "%s%s%s",
475 i ? " " : "", cabc_modes[i],
476 i == ARRAY_SIZE(cabc_modes) - 1 ? "\n" : "");
477
478 return len < PAGE_SIZE ? len : PAGE_SIZE - 1;
479}
480
481static DEVICE_ATTR(cabc_mode, S_IRUGO | S_IWUSR,
482 show_cabc_mode, store_cabc_mode);
483static DEVICE_ATTR(cabc_available_modes, S_IRUGO,
484 show_cabc_available_modes, NULL);
485
486static struct attribute *bldev_attrs[] = {
487 &dev_attr_cabc_mode.attr,
488 &dev_attr_cabc_available_modes.attr,
489 NULL,
490};
491
492static struct attribute_group bldev_attr_group = {
493 .attrs = bldev_attrs,
494};
495
496static int acx565akm_connect(struct omap_dss_device *dssdev)
497{
498 struct panel_drv_data *ddata = to_panel_data(dssdev);
499 struct omap_dss_device *in = ddata->in;
500 int r;
501
502 if (omapdss_device_is_connected(dssdev))
503 return 0;
504
505 r = in->ops.sdi->connect(in, dssdev);
506 if (r)
507 return r;
508
509 return 0;
510}
511
512static void acx565akm_disconnect(struct omap_dss_device *dssdev)
513{
514 struct panel_drv_data *ddata = to_panel_data(dssdev);
515 struct omap_dss_device *in = ddata->in;
516
517 if (!omapdss_device_is_connected(dssdev))
518 return;
519
520 in->ops.sdi->disconnect(in, dssdev);
521}
522
523static int acx565akm_panel_power_on(struct omap_dss_device *dssdev)
524{
525 struct panel_drv_data *ddata = to_panel_data(dssdev);
526 struct omap_dss_device *in = ddata->in;
527 int r;
528
529 dev_dbg(&ddata->spi->dev, "%s\n", __func__);
530
531 in->ops.sdi->set_timings(in, &ddata->videomode);
532 in->ops.sdi->set_datapairs(in, ddata->datapairs);
533
534 r = in->ops.sdi->enable(in);
535 if (r) {
536 pr_err("%s sdi enable failed\n", __func__);
537 return r;
538 }
539
540 /*FIXME tweak me */
541 msleep(50);
542
543 if (gpio_is_valid(ddata->reset_gpio))
544 gpio_set_value(ddata->reset_gpio, 1);
545
546 if (ddata->enabled) {
547 dev_dbg(&ddata->spi->dev, "panel already enabled\n");
548 return 0;
549 }
550
551 /*
552 * We have to meet all the following delay requirements:
553 * 1. tRW: reset pulse width 10usec (7.12.1)
554 * 2. tRT: reset cancel time 5msec (7.12.1)
555 * 3. Providing PCLK,HS,VS signals for 2 frames = ~50msec worst
556 * case (7.6.2)
557 * 4. 120msec before the sleep out command (7.12.1)
558 */
559 msleep(120);
560
561 set_sleep_mode(ddata, 0);
562 ddata->enabled = 1;
563
564 /* 5msec between sleep out and the next command. (8.2.16) */
565 usleep_range(5000, 10000);
566 set_display_state(ddata, 1);
567 set_cabc_mode(ddata, ddata->cabc_mode);
568
569 mutex_unlock(&ddata->mutex);
570
571 return acx565akm_bl_update_status(ddata->bl_dev);
572}
573
574static void acx565akm_panel_power_off(struct omap_dss_device *dssdev)
575{
576 struct panel_drv_data *ddata = to_panel_data(dssdev);
577 struct omap_dss_device *in = ddata->in;
578
579 dev_dbg(dssdev->dev, "%s\n", __func__);
580
581 if (!ddata->enabled)
582 return;
583
584 set_display_state(ddata, 0);
585 set_sleep_mode(ddata, 1);
586 ddata->enabled = 0;
587 /*
588 * We have to provide PCLK,HS,VS signals for 2 frames (worst case
589 * ~50msec) after sending the sleep in command and asserting the
590 * reset signal. We probably could assert the reset w/o the delay
591 * but we still delay to avoid possible artifacts. (7.6.1)
592 */
593 msleep(50);
594
595 if (gpio_is_valid(ddata->reset_gpio))
596 gpio_set_value(ddata->reset_gpio, 0);
597
598 /* FIXME need to tweak this delay */
599 msleep(100);
600
601 in->ops.sdi->disable(in);
602}
603
604static int acx565akm_enable(struct omap_dss_device *dssdev)
605{
606 struct panel_drv_data *ddata = to_panel_data(dssdev);
607 int r;
608
609 dev_dbg(dssdev->dev, "%s\n", __func__);
610
611 if (!omapdss_device_is_connected(dssdev))
612 return -ENODEV;
613
614 if (omapdss_device_is_enabled(dssdev))
615 return 0;
616
617 mutex_lock(&ddata->mutex);
618 r = acx565akm_panel_power_on(dssdev);
619 mutex_unlock(&ddata->mutex);
620
621 if (r)
622 return r;
623
624 dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
625
626 return 0;
627}
628
629static void acx565akm_disable(struct omap_dss_device *dssdev)
630{
631 struct panel_drv_data *ddata = to_panel_data(dssdev);
632
633 dev_dbg(dssdev->dev, "%s\n", __func__);
634
635 if (!omapdss_device_is_enabled(dssdev))
636 return;
637
638 mutex_lock(&ddata->mutex);
639 acx565akm_panel_power_off(dssdev);
640 mutex_unlock(&ddata->mutex);
641
642 dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
643}
644
645static void acx565akm_set_timings(struct omap_dss_device *dssdev,
646 struct omap_video_timings *timings)
647{
648 struct panel_drv_data *ddata = to_panel_data(dssdev);
649 struct omap_dss_device *in = ddata->in;
650
651 ddata->videomode = *timings;
652 dssdev->panel.timings = *timings;
653
654 in->ops.sdi->set_timings(in, timings);
655}
656
657static void acx565akm_get_timings(struct omap_dss_device *dssdev,
658 struct omap_video_timings *timings)
659{
660 struct panel_drv_data *ddata = to_panel_data(dssdev);
661
662 *timings = ddata->videomode;
663}
664
665static int acx565akm_check_timings(struct omap_dss_device *dssdev,
666 struct omap_video_timings *timings)
667{
668 struct panel_drv_data *ddata = to_panel_data(dssdev);
669 struct omap_dss_device *in = ddata->in;
670
671 return in->ops.sdi->check_timings(in, timings);
672}
673
674static struct omap_dss_driver acx565akm_ops = {
675 .connect = acx565akm_connect,
676 .disconnect = acx565akm_disconnect,
677
678 .enable = acx565akm_enable,
679 .disable = acx565akm_disable,
680
681 .set_timings = acx565akm_set_timings,
682 .get_timings = acx565akm_get_timings,
683 .check_timings = acx565akm_check_timings,
684
685 .get_resolution = omapdss_default_get_resolution,
686};
687
688static int acx565akm_probe_pdata(struct spi_device *spi)
689{
690 const struct panel_acx565akm_platform_data *pdata;
691 struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev);
692 struct omap_dss_device *dssdev, *in;
693
694 pdata = dev_get_platdata(&spi->dev);
695
696 ddata->reset_gpio = pdata->reset_gpio;
697
698 in = omap_dss_find_output(pdata->source);
699 if (in == NULL) {
700 dev_err(&spi->dev, "failed to find video source '%s'\n",
701 pdata->source);
702 return -EPROBE_DEFER;
703 }
704 ddata->in = in;
705
706 ddata->datapairs = pdata->datapairs;
707
708 dssdev = &ddata->dssdev;
709 dssdev->name = pdata->name;
710
711 return 0;
712}
713
714static int acx565akm_probe(struct spi_device *spi)
715{
716 struct panel_drv_data *ddata;
717 struct omap_dss_device *dssdev;
718 struct backlight_device *bldev;
719 int max_brightness, brightness;
720 struct backlight_properties props;
721 int r;
722
723 dev_dbg(&spi->dev, "%s\n", __func__);
724
725 spi->mode = SPI_MODE_3;
726
727 ddata = devm_kzalloc(&spi->dev, sizeof(*ddata), GFP_KERNEL);
728 if (ddata == NULL)
729 return -ENOMEM;
730
731 dev_set_drvdata(&spi->dev, ddata);
732
733 ddata->spi = spi;
734
735 mutex_init(&ddata->mutex);
736
737 if (dev_get_platdata(&spi->dev)) {
738 r = acx565akm_probe_pdata(spi);
739 if (r)
740 return r;
741 } else {
742 return -ENODEV;
743 }
744
745 if (gpio_is_valid(ddata->reset_gpio)) {
746 r = devm_gpio_request_one(&spi->dev, ddata->reset_gpio,
747 GPIOF_OUT_INIT_LOW, "lcd reset");
748 if (r)
749 goto err_gpio;
750 }
751
752 if (gpio_is_valid(ddata->reset_gpio))
753 gpio_set_value(ddata->reset_gpio, 1);
754
755 /*
756 * After reset we have to wait 5 msec before the first
757 * command can be sent.
758 */
759 usleep_range(5000, 10000);
760
761 ddata->enabled = panel_enabled(ddata);
762
763 r = panel_detect(ddata);
764
765 if (!ddata->enabled && gpio_is_valid(ddata->reset_gpio))
766 gpio_set_value(ddata->reset_gpio, 0);
767
768 if (r) {
769 dev_err(&spi->dev, "%s panel detect error\n", __func__);
770 goto err_detect;
771 }
772
773 memset(&props, 0, sizeof(props));
774 props.fb_blank = FB_BLANK_UNBLANK;
775 props.power = FB_BLANK_UNBLANK;
776 props.type = BACKLIGHT_RAW;
777
778 bldev = backlight_device_register("acx565akm", &ddata->spi->dev,
779 ddata, &acx565akm_bl_ops, &props);
780 ddata->bl_dev = bldev;
781 if (ddata->has_cabc) {
782 r = sysfs_create_group(&bldev->dev.kobj, &bldev_attr_group);
783 if (r) {
784 dev_err(&bldev->dev,
785 "%s failed to create sysfs files\n", __func__);
786 goto err_sysfs;
787 }
788 ddata->cabc_mode = get_hw_cabc_mode(ddata);
789 }
790
791 max_brightness = 255;
792
793 if (ddata->has_bc)
794 brightness = acx565akm_get_actual_brightness(ddata);
795 else
796 brightness = 0;
797
798 bldev->props.max_brightness = max_brightness;
799 bldev->props.brightness = brightness;
800
801 acx565akm_bl_update_status(bldev);
802
803
804 ddata->videomode = acx565akm_panel_timings;
805
806 dssdev = &ddata->dssdev;
807 dssdev->dev = &spi->dev;
808 dssdev->driver = &acx565akm_ops;
809 dssdev->type = OMAP_DISPLAY_TYPE_SDI;
810 dssdev->owner = THIS_MODULE;
811 dssdev->panel.timings = ddata->videomode;
812
813 r = omapdss_register_display(dssdev);
814 if (r) {
815 dev_err(&spi->dev, "Failed to register panel\n");
816 goto err_reg;
817 }
818
819 return 0;
820
821err_reg:
822 sysfs_remove_group(&bldev->dev.kobj, &bldev_attr_group);
823err_sysfs:
824 backlight_device_unregister(bldev);
825err_detect:
826err_gpio:
827 omap_dss_put_device(ddata->in);
828 return r;
829}
830
831static int acx565akm_remove(struct spi_device *spi)
832{
833 struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev);
834 struct omap_dss_device *dssdev = &ddata->dssdev;
835 struct omap_dss_device *in = ddata->in;
836
837 dev_dbg(&ddata->spi->dev, "%s\n", __func__);
838
839 sysfs_remove_group(&ddata->bl_dev->dev.kobj, &bldev_attr_group);
840 backlight_device_unregister(ddata->bl_dev);
841
842 omapdss_unregister_display(dssdev);
843
844 acx565akm_disable(dssdev);
845 acx565akm_disconnect(dssdev);
846
847 omap_dss_put_device(in);
848
849 return 0;
850}
851
852static struct spi_driver acx565akm_driver = {
853 .driver = {
854 .name = "acx565akm",
855 .owner = THIS_MODULE,
856 },
857 .probe = acx565akm_probe,
858 .remove = acx565akm_remove,
859};
860
861module_spi_driver(acx565akm_driver);
862
863MODULE_AUTHOR("Nokia Corporation");
864MODULE_DESCRIPTION("acx565akm LCD Driver");
865MODULE_LICENSE("GPL");
diff --git a/include/video/omap-panel-data.h b/include/video/omap-panel-data.h
index d4d93a900709..678f5f70da1a 100644
--- a/include/video/omap-panel-data.h
+++ b/include/video/omap-panel-data.h
@@ -264,4 +264,20 @@ struct panel_dsicm_platform_data {
264 struct omap_dsi_pin_config pin_config; 264 struct omap_dsi_pin_config pin_config;
265}; 265};
266 266
267/**
268 * panel_acx565akm platform data
269 * @name: name for this display entity
270 * @source: name of the display entity used as a video source
271 * @reset_gpio: gpio to reset the panel (or -1)
272 * @datapairs: number of SDI datapairs
273 */
274struct panel_acx565akm_platform_data {
275 const char *name;
276 const char *source;
277
278 int reset_gpio;
279
280 int datapairs;
281};
282
267#endif /* __OMAP_PANEL_DATA_H */ 283#endif /* __OMAP_PANEL_DATA_H */
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-31 12:17:48 -0500