1 /*
2 * omap_vout.c
3 *
4 * Copyright (C) 2005-2010 Texas Instruments.
5 *
6 * This file is licensed under the terms of the GNU General Public License
7 * version 2. This program is licensed "as is" without any warranty of any
8 * kind, whether express or implied.
9 *
10 * Leveraged code from the OMAP2 camera driver
11 * Video-for-Linux (Version 2) camera capture driver for
12 * the OMAP24xx camera controller.
13 *
14 * Author: Andy Lowe (source@mvista.com)
15 *
16 * Copyright (C) 2004 MontaVista Software, Inc.
17 * Copyright (C) 2010 Texas Instruments.
18 *
19 * History:
20 * 20-APR-2006 Khasim Modified VRFB based Rotation,
21 * The image data is always read from 0 degree
22 * view and written
23 * to the virtual space of desired rotation angle
24 * 4-DEC-2006 Jian Changed to support better memory management
25 *
26 * 17-Nov-2008 Hardik Changed driver to use video_ioctl2
27 *
28 * 23-Feb-2010 Vaibhav H Modified to use new DSS2 interface
29 *
30 */
31
32 #include <linux/init.h>
33 #include <linux/module.h>
34 #include <linux/vmalloc.h>
35 #include <linux/sched.h>
36 #include <linux/types.h>
37 #include <linux/platform_device.h>
38 #include <linux/irq.h>
39 #include <linux/videodev2.h>
40 #include <linux/dma-mapping.h>
41 #include <linux/slab.h>
42
43 #include <media/v4l2-device.h>
44 #include <media/v4l2-ioctl.h>
45 #include <media/v4l2-event.h>
46
47 #include <video/omapvrfb.h>
48 #include <video/omapfb_dss.h>
49
50 #include "omap_voutlib.h"
51 #include "omap_voutdef.h"
52 #include "omap_vout_vrfb.h"
53
54 MODULE_AUTHOR("Texas Instruments");
55 MODULE_DESCRIPTION("OMAP Video for Linux Video out driver");
56 MODULE_LICENSE("GPL");
57
58 /* Driver Configuration macros */
59 #define VOUT_NAME "omap_vout"
60
61 enum omap_vout_channels {
62 OMAP_VIDEO1,
63 OMAP_VIDEO2,
64 };
65
66 /* Variables configurable through module params*/
67 static bool vid1_static_vrfb_alloc;
68 static bool vid2_static_vrfb_alloc;
69 static bool debug;
70
71 /* Module parameters */
72 module_param(vid1_static_vrfb_alloc, bool, S_IRUGO);
73 MODULE_PARM_DESC(vid1_static_vrfb_alloc,
74 "Static allocation of the VRFB buffer for video1 device");
75
76 module_param(vid2_static_vrfb_alloc, bool, S_IRUGO);
77 MODULE_PARM_DESC(vid2_static_vrfb_alloc,
78 "Static allocation of the VRFB buffer for video2 device");
79
80 module_param(debug, bool, S_IRUGO);
81 MODULE_PARM_DESC(debug, "Debug level (0-1)");
82
83 /* list of image formats supported by OMAP2 video pipelines */
84 static const struct v4l2_fmtdesc omap_formats[] = {
85 {
86 /* Note: V4L2 defines RGB565 as:
87 *
88 * Byte 0 Byte 1
89 * g2 g1 g0 r4 r3 r2 r1 r0 b4 b3 b2 b1 b0 g5 g4 g3
90 *
91 * We interpret RGB565 as:
92 *
93 * Byte 0 Byte 1
94 * g2 g1 g0 b4 b3 b2 b1 b0 r4 r3 r2 r1 r0 g5 g4 g3
95 */
96 .pixelformat = V4L2_PIX_FMT_RGB565,
97 },
98 {
99 /* Note: V4L2 defines RGB32 as: RGB-8-8-8-8 we use
100 * this for RGB24 unpack mode, the last 8 bits are ignored
101 * */
102 .pixelformat = V4L2_PIX_FMT_RGB32,
103 },
104 {
105 /* Note: V4L2 defines RGB24 as: RGB-8-8-8 we use
106 * this for RGB24 packed mode
107 *
108 */
109 .pixelformat = V4L2_PIX_FMT_RGB24,
110 },
111 {
112 .pixelformat = V4L2_PIX_FMT_YUYV,
113 },
114 {
115 .pixelformat = V4L2_PIX_FMT_UYVY,
116 },
117 };
118
119 #define NUM_OUTPUT_FORMATS (ARRAY_SIZE(omap_formats))
120
121 /*
122 * Try format
123 */
omap_vout_try_format(struct v4l2_pix_format * pix)124 static int omap_vout_try_format(struct v4l2_pix_format *pix)
125 {
126 int ifmt, bpp = 0;
127
128 pix->height = clamp(pix->height, (u32)VID_MIN_HEIGHT,
129 (u32)VID_MAX_HEIGHT);
130 pix->width = clamp(pix->width, (u32)VID_MIN_WIDTH, (u32)VID_MAX_WIDTH);
131
132 for (ifmt = 0; ifmt < NUM_OUTPUT_FORMATS; ifmt++) {
133 if (pix->pixelformat == omap_formats[ifmt].pixelformat)
134 break;
135 }
136
137 if (ifmt == NUM_OUTPUT_FORMATS)
138 ifmt = 0;
139
140 pix->pixelformat = omap_formats[ifmt].pixelformat;
141 pix->field = V4L2_FIELD_NONE;
142
143 switch (pix->pixelformat) {
144 case V4L2_PIX_FMT_YUYV:
145 case V4L2_PIX_FMT_UYVY:
146 default:
147 pix->colorspace = V4L2_COLORSPACE_SRGB;
148 bpp = YUYV_BPP;
149 break;
150 case V4L2_PIX_FMT_RGB565:
151 case V4L2_PIX_FMT_RGB565X:
152 pix->colorspace = V4L2_COLORSPACE_SRGB;
153 bpp = RGB565_BPP;
154 break;
155 case V4L2_PIX_FMT_RGB24:
156 pix->colorspace = V4L2_COLORSPACE_SRGB;
157 bpp = RGB24_BPP;
158 break;
159 case V4L2_PIX_FMT_RGB32:
160 case V4L2_PIX_FMT_BGR32:
161 pix->colorspace = V4L2_COLORSPACE_SRGB;
162 bpp = RGB32_BPP;
163 break;
164 }
165 pix->bytesperline = pix->width * bpp;
166 pix->sizeimage = pix->bytesperline * pix->height;
167
168 return bpp;
169 }
170
171 /*
172 * Convert V4L2 rotation to DSS rotation
173 * V4L2 understand 0, 90, 180, 270.
174 * Convert to 0, 1, 2 and 3 respectively for DSS
175 */
v4l2_rot_to_dss_rot(int v4l2_rotation,enum dss_rotation * rotation,bool mirror)176 static int v4l2_rot_to_dss_rot(int v4l2_rotation,
177 enum dss_rotation *rotation, bool mirror)
178 {
179 int ret = 0;
180
181 switch (v4l2_rotation) {
182 case 90:
183 *rotation = dss_rotation_90_degree;
184 break;
185 case 180:
186 *rotation = dss_rotation_180_degree;
187 break;
188 case 270:
189 *rotation = dss_rotation_270_degree;
190 break;
191 case 0:
192 *rotation = dss_rotation_0_degree;
193 break;
194 default:
195 ret = -EINVAL;
196 }
197 return ret;
198 }
199
omap_vout_calculate_offset(struct omap_vout_device * vout)200 static int omap_vout_calculate_offset(struct omap_vout_device *vout)
201 {
202 struct omapvideo_info *ovid;
203 struct v4l2_rect *crop = &vout->crop;
204 struct v4l2_pix_format *pix = &vout->pix;
205 int *cropped_offset = &vout->cropped_offset;
206 int ps = 2, line_length = 0;
207
208 ovid = &vout->vid_info;
209
210 if (ovid->rotation_type == VOUT_ROT_VRFB) {
211 omap_vout_calculate_vrfb_offset(vout);
212 } else {
213 vout->line_length = line_length = pix->width;
214
215 if (V4L2_PIX_FMT_YUYV == pix->pixelformat ||
216 V4L2_PIX_FMT_UYVY == pix->pixelformat)
217 ps = 2;
218 else if (V4L2_PIX_FMT_RGB32 == pix->pixelformat)
219 ps = 4;
220 else if (V4L2_PIX_FMT_RGB24 == pix->pixelformat)
221 ps = 3;
222
223 vout->ps = ps;
224
225 *cropped_offset = (line_length * ps) *
226 crop->top + crop->left * ps;
227 }
228
229 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "%s Offset:%x\n",
230 __func__, vout->cropped_offset);
231
232 return 0;
233 }
234
235 /*
236 * Convert V4L2 pixel format to DSS pixel format
237 */
video_mode_to_dss_mode(struct omap_vout_device * vout)238 static int video_mode_to_dss_mode(struct omap_vout_device *vout)
239 {
240 struct omap_overlay *ovl;
241 struct omapvideo_info *ovid;
242 struct v4l2_pix_format *pix = &vout->pix;
243 enum omap_color_mode mode;
244
245 ovid = &vout->vid_info;
246 ovl = ovid->overlays[0];
247
248 switch (pix->pixelformat) {
249 case V4L2_PIX_FMT_YUYV:
250 mode = OMAP_DSS_COLOR_YUV2;
251 break;
252 case V4L2_PIX_FMT_UYVY:
253 mode = OMAP_DSS_COLOR_UYVY;
254 break;
255 case V4L2_PIX_FMT_RGB565:
256 mode = OMAP_DSS_COLOR_RGB16;
257 break;
258 case V4L2_PIX_FMT_RGB24:
259 mode = OMAP_DSS_COLOR_RGB24P;
260 break;
261 case V4L2_PIX_FMT_RGB32:
262 mode = (ovl->id == OMAP_DSS_VIDEO1) ?
263 OMAP_DSS_COLOR_RGB24U : OMAP_DSS_COLOR_ARGB32;
264 break;
265 case V4L2_PIX_FMT_BGR32:
266 mode = OMAP_DSS_COLOR_RGBX32;
267 break;
268 default:
269 mode = -EINVAL;
270 break;
271 }
272 return mode;
273 }
274
275 /*
276 * Setup the overlay
277 */
omapvid_setup_overlay(struct omap_vout_device * vout,struct omap_overlay * ovl,int posx,int posy,int outw,int outh,u32 addr)278 static int omapvid_setup_overlay(struct omap_vout_device *vout,
279 struct omap_overlay *ovl, int posx, int posy, int outw,
280 int outh, u32 addr)
281 {
282 int ret = 0;
283 struct omap_overlay_info info;
284 int cropheight, cropwidth, pixwidth;
285
286 if ((ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0 &&
287 (outw != vout->pix.width || outh != vout->pix.height)) {
288 ret = -EINVAL;
289 goto setup_ovl_err;
290 }
291
292 vout->dss_mode = video_mode_to_dss_mode(vout);
293 if (vout->dss_mode == -EINVAL) {
294 ret = -EINVAL;
295 goto setup_ovl_err;
296 }
297
298 /* Setup the input plane parameters according to
299 * rotation value selected.
300 */
301 if (is_rotation_90_or_270(vout)) {
302 cropheight = vout->crop.width;
303 cropwidth = vout->crop.height;
304 pixwidth = vout->pix.height;
305 } else {
306 cropheight = vout->crop.height;
307 cropwidth = vout->crop.width;
308 pixwidth = vout->pix.width;
309 }
310
311 ovl->get_overlay_info(ovl, &info);
312 info.paddr = addr;
313 info.width = cropwidth;
314 info.height = cropheight;
315 info.color_mode = vout->dss_mode;
316 info.mirror = vout->mirror;
317 info.pos_x = posx;
318 info.pos_y = posy;
319 info.out_width = outw;
320 info.out_height = outh;
321 info.global_alpha = vout->win.global_alpha;
322 if (!is_rotation_enabled(vout)) {
323 info.rotation = 0;
324 info.rotation_type = OMAP_DSS_ROT_DMA;
325 info.screen_width = pixwidth;
326 } else {
327 info.rotation = vout->rotation;
328 info.rotation_type = OMAP_DSS_ROT_VRFB;
329 info.screen_width = 2048;
330 }
331
332 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
333 "%s enable=%d addr=%pad width=%d\n height=%d color_mode=%d\n"
334 "rotation=%d mirror=%d posx=%d posy=%d out_width = %d \n"
335 "out_height=%d rotation_type=%d screen_width=%d\n", __func__,
336 ovl->is_enabled(ovl), &info.paddr, info.width, info.height,
337 info.color_mode, info.rotation, info.mirror, info.pos_x,
338 info.pos_y, info.out_width, info.out_height, info.rotation_type,
339 info.screen_width);
340
341 ret = ovl->set_overlay_info(ovl, &info);
342 if (ret)
343 goto setup_ovl_err;
344
345 return 0;
346
347 setup_ovl_err:
348 v4l2_warn(&vout->vid_dev->v4l2_dev, "setup_overlay failed\n");
349 return ret;
350 }
351
352 /*
353 * Initialize the overlay structure
354 */
omapvid_init(struct omap_vout_device * vout,u32 addr)355 static int omapvid_init(struct omap_vout_device *vout, u32 addr)
356 {
357 int ret = 0, i;
358 struct v4l2_window *win;
359 struct omap_overlay *ovl;
360 int posx, posy, outw, outh;
361 struct omap_video_timings *timing;
362 struct omapvideo_info *ovid = &vout->vid_info;
363
364 win = &vout->win;
365 for (i = 0; i < ovid->num_overlays; i++) {
366 struct omap_dss_device *dssdev;
367
368 ovl = ovid->overlays[i];
369 dssdev = ovl->get_device(ovl);
370
371 if (!dssdev)
372 return -EINVAL;
373
374 timing = &dssdev->panel.timings;
375
376 outw = win->w.width;
377 outh = win->w.height;
378 switch (vout->rotation) {
379 case dss_rotation_90_degree:
380 /* Invert the height and width for 90
381 * and 270 degree rotation
382 */
383 swap(outw, outh);
384 posy = (timing->y_res - win->w.width) - win->w.left;
385 posx = win->w.top;
386 break;
387
388 case dss_rotation_180_degree:
389 posx = (timing->x_res - win->w.width) - win->w.left;
390 posy = (timing->y_res - win->w.height) - win->w.top;
391 break;
392
393 case dss_rotation_270_degree:
394 swap(outw, outh);
395 posy = win->w.left;
396 posx = (timing->x_res - win->w.height) - win->w.top;
397 break;
398
399 default:
400 posx = win->w.left;
401 posy = win->w.top;
402 break;
403 }
404
405 ret = omapvid_setup_overlay(vout, ovl, posx, posy,
406 outw, outh, addr);
407 if (ret)
408 goto omapvid_init_err;
409 }
410 return 0;
411
412 omapvid_init_err:
413 v4l2_warn(&vout->vid_dev->v4l2_dev, "apply_changes failed\n");
414 return ret;
415 }
416
417 /*
418 * Apply the changes set the go bit of DSS
419 */
omapvid_apply_changes(struct omap_vout_device * vout)420 static int omapvid_apply_changes(struct omap_vout_device *vout)
421 {
422 int i;
423 struct omap_overlay *ovl;
424 struct omapvideo_info *ovid = &vout->vid_info;
425
426 for (i = 0; i < ovid->num_overlays; i++) {
427 struct omap_dss_device *dssdev;
428
429 ovl = ovid->overlays[i];
430 dssdev = ovl->get_device(ovl);
431 if (!dssdev)
432 return -EINVAL;
433 ovl->manager->apply(ovl->manager);
434 }
435
436 return 0;
437 }
438
omapvid_handle_interlace_display(struct omap_vout_device * vout,unsigned int irqstatus,u64 ts)439 static int omapvid_handle_interlace_display(struct omap_vout_device *vout,
440 unsigned int irqstatus, u64 ts)
441 {
442 u32 fid;
443
444 if (vout->first_int) {
445 vout->first_int = 0;
446 goto err;
447 }
448
449 if (irqstatus & DISPC_IRQ_EVSYNC_ODD)
450 fid = 1;
451 else if (irqstatus & DISPC_IRQ_EVSYNC_EVEN)
452 fid = 0;
453 else
454 goto err;
455
456 vout->field_id ^= 1;
457 if (fid != vout->field_id) {
458 if (fid == 0)
459 vout->field_id = fid;
460 } else if (0 == fid) {
461 if (vout->cur_frm == vout->next_frm)
462 goto err;
463
464 vout->cur_frm->vbuf.vb2_buf.timestamp = ts;
465 vout->cur_frm->vbuf.sequence = vout->sequence++;
466 vb2_buffer_done(&vout->cur_frm->vbuf.vb2_buf, VB2_BUF_STATE_DONE);
467 vout->cur_frm = vout->next_frm;
468 } else {
469 if (list_empty(&vout->dma_queue) ||
470 (vout->cur_frm != vout->next_frm))
471 goto err;
472 }
473
474 return vout->field_id;
475 err:
476 return 0;
477 }
478
omap_vout_isr(void * arg,unsigned int irqstatus)479 static void omap_vout_isr(void *arg, unsigned int irqstatus)
480 {
481 int ret, fid, mgr_id;
482 u32 addr, irq;
483 struct omap_overlay *ovl;
484 u64 ts;
485 struct omapvideo_info *ovid;
486 struct omap_dss_device *cur_display;
487 struct omap_vout_device *vout = (struct omap_vout_device *)arg;
488
489 ovid = &vout->vid_info;
490 ovl = ovid->overlays[0];
491
492 mgr_id = ovl->manager->id;
493
494 /* get the display device attached to the overlay */
495 cur_display = ovl->get_device(ovl);
496
497 if (!cur_display)
498 return;
499
500 spin_lock(&vout->vbq_lock);
501 ts = ktime_get_ns();
502
503 switch (cur_display->type) {
504 case OMAP_DISPLAY_TYPE_DSI:
505 case OMAP_DISPLAY_TYPE_DPI:
506 case OMAP_DISPLAY_TYPE_DVI:
507 if (mgr_id == OMAP_DSS_CHANNEL_LCD)
508 irq = DISPC_IRQ_VSYNC;
509 else if (mgr_id == OMAP_DSS_CHANNEL_LCD2)
510 irq = DISPC_IRQ_VSYNC2;
511 else
512 goto vout_isr_err;
513
514 if (!(irqstatus & irq))
515 goto vout_isr_err;
516 break;
517 case OMAP_DISPLAY_TYPE_VENC:
518 fid = omapvid_handle_interlace_display(vout, irqstatus,
519 ts);
520 if (!fid)
521 goto vout_isr_err;
522 break;
523 case OMAP_DISPLAY_TYPE_HDMI:
524 if (!(irqstatus & DISPC_IRQ_EVSYNC_EVEN))
525 goto vout_isr_err;
526 break;
527 default:
528 goto vout_isr_err;
529 }
530
531 if (!vout->first_int && (vout->cur_frm != vout->next_frm)) {
532 vout->cur_frm->vbuf.vb2_buf.timestamp = ts;
533 vout->cur_frm->vbuf.sequence = vout->sequence++;
534 vb2_buffer_done(&vout->cur_frm->vbuf.vb2_buf, VB2_BUF_STATE_DONE);
535 vout->cur_frm = vout->next_frm;
536 }
537
538 vout->first_int = 0;
539 if (list_empty(&vout->dma_queue))
540 goto vout_isr_err;
541
542 vout->next_frm = list_entry(vout->dma_queue.next,
543 struct omap_vout_buffer, queue);
544 list_del(&vout->next_frm->queue);
545
546 addr = (unsigned long)vout->queued_buf_addr[vout->next_frm->vbuf.vb2_buf.index]
547 + vout->cropped_offset;
548
549 /* First save the configuration in ovelray structure */
550 ret = omapvid_init(vout, addr);
551 if (ret) {
552 printk(KERN_ERR VOUT_NAME
553 "failed to set overlay info\n");
554 goto vout_isr_err;
555 }
556
557 /* Enable the pipeline and set the Go bit */
558 ret = omapvid_apply_changes(vout);
559 if (ret)
560 printk(KERN_ERR VOUT_NAME "failed to change mode\n");
561
562 vout_isr_err:
563 spin_unlock(&vout->vbq_lock);
564 }
565
566
567 /*
568 * V4L2 ioctls
569 */
vidioc_querycap(struct file * file,void * fh,struct v4l2_capability * cap)570 static int vidioc_querycap(struct file *file, void *fh,
571 struct v4l2_capability *cap)
572 {
573 struct omap_vout_device *vout = video_drvdata(file);
574
575 strscpy(cap->driver, VOUT_NAME, sizeof(cap->driver));
576 strscpy(cap->card, vout->vfd->name, sizeof(cap->card));
577 snprintf(cap->bus_info, sizeof(cap->bus_info),
578 "platform:%s.%d", VOUT_NAME, vout->vid);
579 return 0;
580 }
581
vidioc_enum_fmt_vid_out(struct file * file,void * fh,struct v4l2_fmtdesc * fmt)582 static int vidioc_enum_fmt_vid_out(struct file *file, void *fh,
583 struct v4l2_fmtdesc *fmt)
584 {
585 int index = fmt->index;
586
587 if (index >= NUM_OUTPUT_FORMATS)
588 return -EINVAL;
589
590 fmt->flags = omap_formats[index].flags;
591 fmt->pixelformat = omap_formats[index].pixelformat;
592
593 return 0;
594 }
595
vidioc_g_fmt_vid_out(struct file * file,void * fh,struct v4l2_format * f)596 static int vidioc_g_fmt_vid_out(struct file *file, void *fh,
597 struct v4l2_format *f)
598 {
599 struct omap_vout_device *vout = video_drvdata(file);
600
601 f->fmt.pix = vout->pix;
602 return 0;
603
604 }
605
vidioc_try_fmt_vid_out(struct file * file,void * fh,struct v4l2_format * f)606 static int vidioc_try_fmt_vid_out(struct file *file, void *fh,
607 struct v4l2_format *f)
608 {
609 struct omap_overlay *ovl;
610 struct omapvideo_info *ovid;
611 struct omap_video_timings *timing;
612 struct omap_vout_device *vout = video_drvdata(file);
613 struct omap_dss_device *dssdev;
614
615 ovid = &vout->vid_info;
616 ovl = ovid->overlays[0];
617 /* get the display device attached to the overlay */
618 dssdev = ovl->get_device(ovl);
619
620 if (!dssdev)
621 return -EINVAL;
622
623 timing = &dssdev->panel.timings;
624
625 vout->fbuf.fmt.height = timing->y_res;
626 vout->fbuf.fmt.width = timing->x_res;
627
628 omap_vout_try_format(&f->fmt.pix);
629 return 0;
630 }
631
vidioc_s_fmt_vid_out(struct file * file,void * fh,struct v4l2_format * f)632 static int vidioc_s_fmt_vid_out(struct file *file, void *fh,
633 struct v4l2_format *f)
634 {
635 int ret, bpp;
636 struct omap_overlay *ovl;
637 struct omapvideo_info *ovid;
638 struct omap_video_timings *timing;
639 struct omap_vout_device *vout = video_drvdata(file);
640 struct omap_dss_device *dssdev;
641
642 if (vb2_is_busy(&vout->vq))
643 return -EBUSY;
644
645 ovid = &vout->vid_info;
646 ovl = ovid->overlays[0];
647 dssdev = ovl->get_device(ovl);
648
649 /* get the display device attached to the overlay */
650 if (!dssdev) {
651 ret = -EINVAL;
652 goto s_fmt_vid_out_exit;
653 }
654 timing = &dssdev->panel.timings;
655
656 /* We don't support RGB24-packed mode if vrfb rotation
657 * is enabled*/
658 if ((is_rotation_enabled(vout)) &&
659 f->fmt.pix.pixelformat == V4L2_PIX_FMT_RGB24) {
660 ret = -EINVAL;
661 goto s_fmt_vid_out_exit;
662 }
663
664 /* get the framebuffer parameters */
665
666 if (is_rotation_90_or_270(vout)) {
667 vout->fbuf.fmt.height = timing->x_res;
668 vout->fbuf.fmt.width = timing->y_res;
669 } else {
670 vout->fbuf.fmt.height = timing->y_res;
671 vout->fbuf.fmt.width = timing->x_res;
672 }
673
674 /* change to smaller size is OK */
675
676 bpp = omap_vout_try_format(&f->fmt.pix);
677 f->fmt.pix.sizeimage = f->fmt.pix.width * f->fmt.pix.height * bpp;
678
679 /* try & set the new output format */
680 vout->bpp = bpp;
681 vout->pix = f->fmt.pix;
682 vout->vrfb_bpp = 1;
683
684 /* If YUYV then vrfb bpp is 2, for others its 1 */
685 if (V4L2_PIX_FMT_YUYV == vout->pix.pixelformat ||
686 V4L2_PIX_FMT_UYVY == vout->pix.pixelformat)
687 vout->vrfb_bpp = 2;
688
689 /* set default crop and win */
690 omap_vout_new_format(&vout->pix, &vout->fbuf, &vout->crop, &vout->win);
691
692 ret = 0;
693
694 s_fmt_vid_out_exit:
695 return ret;
696 }
697
vidioc_try_fmt_vid_overlay(struct file * file,void * fh,struct v4l2_format * f)698 static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh,
699 struct v4l2_format *f)
700 {
701 int ret = 0;
702 struct omap_vout_device *vout = video_drvdata(file);
703 struct omap_overlay *ovl;
704 struct omapvideo_info *ovid;
705 struct v4l2_window *win = &f->fmt.win;
706
707 ovid = &vout->vid_info;
708 ovl = ovid->overlays[0];
709
710 ret = omap_vout_try_window(&vout->fbuf, win);
711
712 if (!ret && !(ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA))
713 win->global_alpha = 0;
714
715 return ret;
716 }
717
vidioc_s_fmt_vid_overlay(struct file * file,void * fh,struct v4l2_format * f)718 static int vidioc_s_fmt_vid_overlay(struct file *file, void *fh,
719 struct v4l2_format *f)
720 {
721 int ret = 0;
722 struct omap_overlay *ovl;
723 struct omapvideo_info *ovid;
724 struct omap_vout_device *vout = video_drvdata(file);
725 struct v4l2_window *win = &f->fmt.win;
726
727 ovid = &vout->vid_info;
728 ovl = ovid->overlays[0];
729
730 ret = omap_vout_new_window(&vout->crop, &vout->win, &vout->fbuf, win);
731 if (!ret) {
732 enum omap_dss_trans_key_type key_type =
733 OMAP_DSS_COLOR_KEY_GFX_DST;
734 int enable;
735
736 /* Video1 plane does not support global alpha on OMAP3 */
737 if (ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA)
738 vout->win.global_alpha = win->global_alpha;
739 else
740 win->global_alpha = 0;
741 if (vout->fbuf.flags & (V4L2_FBUF_FLAG_CHROMAKEY |
742 V4L2_FBUF_FLAG_SRC_CHROMAKEY))
743 enable = 1;
744 else
745 enable = 0;
746 if (vout->fbuf.flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY)
747 key_type = OMAP_DSS_COLOR_KEY_VID_SRC;
748
749 if (ovl->manager && ovl->manager->get_manager_info &&
750 ovl->manager->set_manager_info) {
751 struct omap_overlay_manager_info info;
752
753 ovl->manager->get_manager_info(ovl->manager, &info);
754 info.trans_enabled = enable;
755 info.trans_key_type = key_type;
756 info.trans_key = vout->win.chromakey;
757
758 if (ovl->manager->set_manager_info(ovl->manager, &info))
759 return -EINVAL;
760 }
761 }
762 return ret;
763 }
764
vidioc_g_fmt_vid_overlay(struct file * file,void * fh,struct v4l2_format * f)765 static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh,
766 struct v4l2_format *f)
767 {
768 struct omap_overlay *ovl;
769 struct omapvideo_info *ovid;
770 struct omap_vout_device *vout = video_drvdata(file);
771 struct v4l2_window *win = &f->fmt.win;
772
773 ovid = &vout->vid_info;
774 ovl = ovid->overlays[0];
775
776 win->w = vout->win.w;
777 win->field = vout->win.field;
778 win->chromakey = vout->win.chromakey;
779 if (ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA)
780 win->global_alpha = vout->win.global_alpha;
781 else
782 win->global_alpha = 0;
783 win->clips = NULL;
784 win->clipcount = 0;
785 win->bitmap = NULL;
786 return 0;
787 }
788
vidioc_g_selection(struct file * file,void * fh,struct v4l2_selection * sel)789 static int vidioc_g_selection(struct file *file, void *fh, struct v4l2_selection *sel)
790 {
791 struct omap_vout_device *vout = video_drvdata(file);
792 struct v4l2_pix_format *pix = &vout->pix;
793
794 if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
795 return -EINVAL;
796
797 switch (sel->target) {
798 case V4L2_SEL_TGT_CROP:
799 sel->r = vout->crop;
800 break;
801 case V4L2_SEL_TGT_CROP_DEFAULT:
802 omap_vout_default_crop(&vout->pix, &vout->fbuf, &sel->r);
803 break;
804 case V4L2_SEL_TGT_CROP_BOUNDS:
805 /* Width and height are always even */
806 sel->r.width = pix->width & ~1;
807 sel->r.height = pix->height & ~1;
808 break;
809 default:
810 return -EINVAL;
811 }
812 return 0;
813 }
814
vidioc_s_selection(struct file * file,void * fh,struct v4l2_selection * sel)815 static int vidioc_s_selection(struct file *file, void *fh, struct v4l2_selection *sel)
816 {
817 int ret = -EINVAL;
818 struct omap_vout_device *vout = video_drvdata(file);
819 struct omapvideo_info *ovid;
820 struct omap_overlay *ovl;
821 struct omap_video_timings *timing;
822 struct omap_dss_device *dssdev;
823
824 if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
825 return -EINVAL;
826
827 if (sel->target != V4L2_SEL_TGT_CROP)
828 return -EINVAL;
829
830 if (vb2_is_busy(&vout->vq))
831 return -EBUSY;
832
833 ovid = &vout->vid_info;
834 ovl = ovid->overlays[0];
835 /* get the display device attached to the overlay */
836 dssdev = ovl->get_device(ovl);
837
838 if (!dssdev) {
839 ret = -EINVAL;
840 goto s_crop_err;
841 }
842
843 timing = &dssdev->panel.timings;
844
845 if (is_rotation_90_or_270(vout)) {
846 vout->fbuf.fmt.height = timing->x_res;
847 vout->fbuf.fmt.width = timing->y_res;
848 } else {
849 vout->fbuf.fmt.height = timing->y_res;
850 vout->fbuf.fmt.width = timing->x_res;
851 }
852
853 ret = omap_vout_new_crop(&vout->pix, &vout->crop, &vout->win,
854 &vout->fbuf, &sel->r);
855
856 s_crop_err:
857 return ret;
858 }
859
omap_vout_s_ctrl(struct v4l2_ctrl * ctrl)860 static int omap_vout_s_ctrl(struct v4l2_ctrl *ctrl)
861 {
862 struct omap_vout_device *vout =
863 container_of(ctrl->handler, struct omap_vout_device, ctrl_handler);
864 int ret = 0;
865
866 switch (ctrl->id) {
867 case V4L2_CID_ROTATE: {
868 struct omapvideo_info *ovid;
869 int rotation = ctrl->val;
870
871 ovid = &vout->vid_info;
872
873 if (rotation && ovid->rotation_type == VOUT_ROT_NONE) {
874 ret = -ERANGE;
875 break;
876 }
877
878 if (rotation && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
879 ret = -EINVAL;
880 break;
881 }
882
883 if (v4l2_rot_to_dss_rot(rotation, &vout->rotation,
884 vout->mirror)) {
885 ret = -EINVAL;
886 break;
887 }
888 break;
889 }
890 case V4L2_CID_BG_COLOR:
891 {
892 struct omap_overlay *ovl;
893 unsigned int color = ctrl->val;
894 struct omap_overlay_manager_info info;
895
896 ovl = vout->vid_info.overlays[0];
897
898 if (!ovl->manager || !ovl->manager->get_manager_info) {
899 ret = -EINVAL;
900 break;
901 }
902
903 ovl->manager->get_manager_info(ovl->manager, &info);
904 info.default_color = color;
905 if (ovl->manager->set_manager_info(ovl->manager, &info)) {
906 ret = -EINVAL;
907 break;
908 }
909 break;
910 }
911 case V4L2_CID_VFLIP:
912 {
913 struct omapvideo_info *ovid;
914 unsigned int mirror = ctrl->val;
915
916 ovid = &vout->vid_info;
917
918 if (mirror && ovid->rotation_type == VOUT_ROT_NONE) {
919 ret = -ERANGE;
920 break;
921 }
922
923 if (mirror && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
924 ret = -EINVAL;
925 break;
926 }
927 vout->mirror = mirror;
928 break;
929 }
930 default:
931 return -EINVAL;
932 }
933 return ret;
934 }
935
936 static const struct v4l2_ctrl_ops omap_vout_ctrl_ops = {
937 .s_ctrl = omap_vout_s_ctrl,
938 };
939
omap_vout_vb2_queue_setup(struct vb2_queue * vq,unsigned int * nbufs,unsigned int * num_planes,unsigned int sizes[],struct device * alloc_devs[])940 static int omap_vout_vb2_queue_setup(struct vb2_queue *vq,
941 unsigned int *nbufs,
942 unsigned int *num_planes, unsigned int sizes[],
943 struct device *alloc_devs[])
944 {
945 struct omap_vout_device *vout = vb2_get_drv_priv(vq);
946 int size = vout->pix.sizeimage;
947
948 if (is_rotation_enabled(vout) && vq->num_buffers + *nbufs > VRFB_NUM_BUFS) {
949 *nbufs = VRFB_NUM_BUFS - vq->num_buffers;
950 if (*nbufs == 0)
951 return -EINVAL;
952 }
953
954 if (*num_planes)
955 return sizes[0] < size ? -EINVAL : 0;
956
957 *num_planes = 1;
958 sizes[0] = size;
959 return 0;
960 }
961
omap_vout_vb2_prepare(struct vb2_buffer * vb)962 static int omap_vout_vb2_prepare(struct vb2_buffer *vb)
963 {
964 struct omap_vout_device *vout = vb2_get_drv_priv(vb->vb2_queue);
965 struct omapvideo_info *ovid = &vout->vid_info;
966 struct omap_vout_buffer *voutbuf = vb2_to_omap_vout_buffer(vb);
967 dma_addr_t buf_phy_addr = vb2_dma_contig_plane_dma_addr(vb, 0);
968
969 if (vb2_plane_size(vb, 0) < vout->pix.sizeimage) {
970 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
971 "%s data will not fit into plane (%lu < %u)\n",
972 __func__, vb2_plane_size(vb, 0), vout->pix.sizeimage);
973 return -EINVAL;
974 }
975
976 vb2_set_plane_payload(vb, 0, vout->pix.sizeimage);
977 voutbuf->vbuf.field = V4L2_FIELD_NONE;
978
979 vout->queued_buf_addr[vb->index] = (u8 *)buf_phy_addr;
980 if (ovid->rotation_type == VOUT_ROT_VRFB)
981 return omap_vout_prepare_vrfb(vout, vb);
982 return 0;
983 }
984
omap_vout_vb2_queue(struct vb2_buffer * vb)985 static void omap_vout_vb2_queue(struct vb2_buffer *vb)
986 {
987 struct omap_vout_device *vout = vb2_get_drv_priv(vb->vb2_queue);
988 struct omap_vout_buffer *voutbuf = vb2_to_omap_vout_buffer(vb);
989
990 list_add_tail(&voutbuf->queue, &vout->dma_queue);
991 }
992
omap_vout_vb2_start_streaming(struct vb2_queue * vq,unsigned int count)993 static int omap_vout_vb2_start_streaming(struct vb2_queue *vq, unsigned int count)
994 {
995 struct omap_vout_device *vout = vb2_get_drv_priv(vq);
996 struct omapvideo_info *ovid = &vout->vid_info;
997 struct omap_vout_buffer *buf, *tmp;
998 u32 addr = 0, mask = 0;
999 int ret, j;
1000
1001 /* Get the next frame from the buffer queue */
1002 vout->next_frm = vout->cur_frm = list_entry(vout->dma_queue.next,
1003 struct omap_vout_buffer, queue);
1004 /* Remove buffer from the buffer queue */
1005 list_del(&vout->cur_frm->queue);
1006 /* Initialize field_id and started member */
1007 vout->field_id = 0;
1008 vout->first_int = 1;
1009 vout->sequence = 0;
1010
1011 if (omap_vout_calculate_offset(vout)) {
1012 ret = -EINVAL;
1013 goto out;
1014 }
1015 if (ovid->rotation_type == VOUT_ROT_VRFB)
1016 if (omap_vout_vrfb_buffer_setup(vout, &count, 0)) {
1017 ret = -ENOMEM;
1018 goto out;
1019 }
1020
1021 addr = (unsigned long)vout->queued_buf_addr[vout->cur_frm->vbuf.vb2_buf.index]
1022 + vout->cropped_offset;
1023
1024 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1025 | DISPC_IRQ_VSYNC2;
1026
1027 /* First save the configuration in overlay structure */
1028 ret = omapvid_init(vout, addr);
1029 if (ret) {
1030 v4l2_err(&vout->vid_dev->v4l2_dev,
1031 "failed to set overlay info\n");
1032 goto streamon_err1;
1033 }
1034
1035 omap_dispc_register_isr(omap_vout_isr, vout, mask);
1036
1037 /* Enable the pipeline and set the Go bit */
1038 ret = omapvid_apply_changes(vout);
1039 if (ret)
1040 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1041
1042 for (j = 0; j < ovid->num_overlays; j++) {
1043 struct omap_overlay *ovl = ovid->overlays[j];
1044 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1045
1046 if (dssdev) {
1047 ret = ovl->enable(ovl);
1048 if (ret)
1049 goto streamon_err1;
1050 }
1051 }
1052 return 0;
1053
1054 streamon_err1:
1055 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1056 | DISPC_IRQ_VSYNC2;
1057
1058 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
1059
1060 for (j = 0; j < ovid->num_overlays; j++) {
1061 struct omap_overlay *ovl = ovid->overlays[j];
1062 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1063
1064 if (dssdev)
1065 ovl->disable(ovl);
1066 }
1067 /* Turn of the pipeline */
1068 if (omapvid_apply_changes(vout))
1069 v4l2_err(&vout->vid_dev->v4l2_dev,
1070 "failed to change mode in streamoff\n");
1071
1072 out:
1073 vb2_buffer_done(&vout->cur_frm->vbuf.vb2_buf, VB2_BUF_STATE_QUEUED);
1074 list_for_each_entry_safe(buf, tmp, &vout->dma_queue, queue) {
1075 list_del(&buf->queue);
1076 vb2_buffer_done(&buf->vbuf.vb2_buf, VB2_BUF_STATE_QUEUED);
1077 }
1078 return ret;
1079 }
1080
omap_vout_vb2_stop_streaming(struct vb2_queue * vq)1081 static void omap_vout_vb2_stop_streaming(struct vb2_queue *vq)
1082 {
1083 struct omap_vout_device *vout = vb2_get_drv_priv(vq);
1084 struct omapvideo_info *ovid = &vout->vid_info;
1085 struct omap_vout_buffer *buf, *tmp;
1086 u32 mask = 0;
1087 int j;
1088
1089 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1090 | DISPC_IRQ_VSYNC2;
1091
1092 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
1093
1094 for (j = 0; j < ovid->num_overlays; j++) {
1095 struct omap_overlay *ovl = ovid->overlays[j];
1096 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1097
1098 if (dssdev)
1099 ovl->disable(ovl);
1100 }
1101 /* Turn of the pipeline */
1102 if (omapvid_apply_changes(vout))
1103 v4l2_err(&vout->vid_dev->v4l2_dev,
1104 "failed to change mode in streamoff\n");
1105
1106 if (vout->next_frm != vout->cur_frm)
1107 vb2_buffer_done(&vout->next_frm->vbuf.vb2_buf, VB2_BUF_STATE_ERROR);
1108 vb2_buffer_done(&vout->cur_frm->vbuf.vb2_buf, VB2_BUF_STATE_ERROR);
1109 list_for_each_entry_safe(buf, tmp, &vout->dma_queue, queue) {
1110 list_del(&buf->queue);
1111 vb2_buffer_done(&buf->vbuf.vb2_buf, VB2_BUF_STATE_ERROR);
1112 }
1113 }
1114
vidioc_s_fbuf(struct file * file,void * fh,const struct v4l2_framebuffer * a)1115 static int vidioc_s_fbuf(struct file *file, void *fh,
1116 const struct v4l2_framebuffer *a)
1117 {
1118 int enable = 0;
1119 struct omap_overlay *ovl;
1120 struct omapvideo_info *ovid;
1121 struct omap_vout_device *vout = video_drvdata(file);
1122 struct omap_overlay_manager_info info;
1123 enum omap_dss_trans_key_type key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1124
1125 ovid = &vout->vid_info;
1126 ovl = ovid->overlays[0];
1127
1128 /* OMAP DSS doesn't support Source and Destination color
1129 key together */
1130 if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY) &&
1131 (a->flags & V4L2_FBUF_FLAG_CHROMAKEY))
1132 return -EINVAL;
1133 /* OMAP DSS Doesn't support the Destination color key
1134 and alpha blending together */
1135 if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY) &&
1136 (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA))
1137 return -EINVAL;
1138
1139 if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY)) {
1140 vout->fbuf.flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1141 key_type = OMAP_DSS_COLOR_KEY_VID_SRC;
1142 } else
1143 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1144
1145 if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY)) {
1146 vout->fbuf.flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1147 key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1148 } else
1149 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_CHROMAKEY;
1150
1151 if (a->flags & (V4L2_FBUF_FLAG_CHROMAKEY |
1152 V4L2_FBUF_FLAG_SRC_CHROMAKEY))
1153 enable = 1;
1154 else
1155 enable = 0;
1156 if (ovl->manager && ovl->manager->get_manager_info &&
1157 ovl->manager->set_manager_info) {
1158
1159 ovl->manager->get_manager_info(ovl->manager, &info);
1160 info.trans_enabled = enable;
1161 info.trans_key_type = key_type;
1162 info.trans_key = vout->win.chromakey;
1163
1164 if (ovl->manager->set_manager_info(ovl->manager, &info))
1165 return -EINVAL;
1166 }
1167 if (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA) {
1168 vout->fbuf.flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1169 enable = 1;
1170 } else {
1171 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_LOCAL_ALPHA;
1172 enable = 0;
1173 }
1174 if (ovl->manager && ovl->manager->get_manager_info &&
1175 ovl->manager->set_manager_info) {
1176 ovl->manager->get_manager_info(ovl->manager, &info);
1177 /* enable this only if there is no zorder cap */
1178 if ((ovl->caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
1179 info.partial_alpha_enabled = enable;
1180 if (ovl->manager->set_manager_info(ovl->manager, &info))
1181 return -EINVAL;
1182 }
1183
1184 return 0;
1185 }
1186
vidioc_g_fbuf(struct file * file,void * fh,struct v4l2_framebuffer * a)1187 static int vidioc_g_fbuf(struct file *file, void *fh,
1188 struct v4l2_framebuffer *a)
1189 {
1190 struct omap_overlay *ovl;
1191 struct omapvideo_info *ovid;
1192 struct omap_vout_device *vout = video_drvdata(file);
1193 struct omap_overlay_manager_info info;
1194 struct omap_video_timings *timing;
1195 struct omap_dss_device *dssdev;
1196
1197 ovid = &vout->vid_info;
1198 ovl = ovid->overlays[0];
1199 /* get the display device attached to the overlay */
1200 dssdev = ovl->get_device(ovl);
1201
1202 if (!dssdev)
1203 return -EINVAL;
1204
1205 timing = &dssdev->panel.timings;
1206
1207 vout->fbuf.fmt.height = timing->y_res;
1208 vout->fbuf.fmt.width = timing->x_res;
1209 a->fmt.field = V4L2_FIELD_NONE;
1210 a->fmt.colorspace = V4L2_COLORSPACE_SRGB;
1211 a->fmt.pixelformat = V4L2_PIX_FMT_RGBA32;
1212 a->fmt.height = vout->fbuf.fmt.height;
1213 a->fmt.width = vout->fbuf.fmt.width;
1214 a->fmt.bytesperline = vout->fbuf.fmt.width * 4;
1215 a->fmt.sizeimage = a->fmt.height * a->fmt.bytesperline;
1216 a->base = vout->fbuf.base;
1217
1218 a->flags = vout->fbuf.flags;
1219 a->capability = vout->fbuf.capability;
1220 a->flags &= ~(V4L2_FBUF_FLAG_SRC_CHROMAKEY | V4L2_FBUF_FLAG_CHROMAKEY |
1221 V4L2_FBUF_FLAG_LOCAL_ALPHA);
1222
1223 if (ovl->manager && ovl->manager->get_manager_info) {
1224 ovl->manager->get_manager_info(ovl->manager, &info);
1225 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_VID_SRC)
1226 a->flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1227 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_GFX_DST)
1228 a->flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1229 if (info.partial_alpha_enabled)
1230 a->flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1231 }
1232
1233 return 0;
1234 }
1235
vidioc_enum_output(struct file * file,void * priv_fh,struct v4l2_output * out)1236 static int vidioc_enum_output(struct file *file, void *priv_fh,
1237 struct v4l2_output *out)
1238 {
1239 if (out->index)
1240 return -EINVAL;
1241 snprintf(out->name, sizeof(out->name), "Overlay");
1242 out->type = V4L2_OUTPUT_TYPE_ANALOGVGAOVERLAY;
1243 return 0;
1244 }
1245
vidioc_g_output(struct file * file,void * priv_fh,unsigned int * i)1246 static int vidioc_g_output(struct file *file, void *priv_fh, unsigned int *i)
1247 {
1248 *i = 0;
1249 return 0;
1250 }
1251
vidioc_s_output(struct file * file,void * priv_fh,unsigned int i)1252 static int vidioc_s_output(struct file *file, void *priv_fh, unsigned int i)
1253 {
1254 return i ? -EINVAL : 0;
1255 }
1256
1257 static const struct v4l2_ioctl_ops vout_ioctl_ops = {
1258 .vidioc_querycap = vidioc_querycap,
1259 .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out,
1260 .vidioc_g_fmt_vid_out = vidioc_g_fmt_vid_out,
1261 .vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out,
1262 .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out,
1263 .vidioc_s_fbuf = vidioc_s_fbuf,
1264 .vidioc_g_fbuf = vidioc_g_fbuf,
1265 .vidioc_try_fmt_vid_out_overlay = vidioc_try_fmt_vid_overlay,
1266 .vidioc_s_fmt_vid_out_overlay = vidioc_s_fmt_vid_overlay,
1267 .vidioc_g_fmt_vid_out_overlay = vidioc_g_fmt_vid_overlay,
1268 .vidioc_g_selection = vidioc_g_selection,
1269 .vidioc_s_selection = vidioc_s_selection,
1270 .vidioc_enum_output = vidioc_enum_output,
1271 .vidioc_g_output = vidioc_g_output,
1272 .vidioc_s_output = vidioc_s_output,
1273 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1274 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1275 .vidioc_querybuf = vb2_ioctl_querybuf,
1276 .vidioc_qbuf = vb2_ioctl_qbuf,
1277 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1278 .vidioc_expbuf = vb2_ioctl_expbuf,
1279 .vidioc_streamon = vb2_ioctl_streamon,
1280 .vidioc_streamoff = vb2_ioctl_streamoff,
1281 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1282 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1283 };
1284
1285 static const struct v4l2_file_operations omap_vout_fops = {
1286 .owner = THIS_MODULE,
1287 .unlocked_ioctl = video_ioctl2,
1288 .poll = vb2_fop_poll,
1289 .mmap = vb2_fop_mmap,
1290 .open = v4l2_fh_open,
1291 .release = vb2_fop_release,
1292 };
1293
1294 static const struct vb2_ops omap_vout_vb2_ops = {
1295 .queue_setup = omap_vout_vb2_queue_setup,
1296 .buf_queue = omap_vout_vb2_queue,
1297 .buf_prepare = omap_vout_vb2_prepare,
1298 .start_streaming = omap_vout_vb2_start_streaming,
1299 .stop_streaming = omap_vout_vb2_stop_streaming,
1300 .wait_prepare = vb2_ops_wait_prepare,
1301 .wait_finish = vb2_ops_wait_finish,
1302 };
1303
1304 /* Init functions used during driver initialization */
1305 /* Initial setup of video_data */
omap_vout_setup_video_data(struct omap_vout_device * vout)1306 static int __init omap_vout_setup_video_data(struct omap_vout_device *vout)
1307 {
1308 struct video_device *vfd;
1309 struct v4l2_pix_format *pix;
1310 struct omap_overlay *ovl = vout->vid_info.overlays[0];
1311 struct omap_dss_device *display = ovl->get_device(ovl);
1312 struct v4l2_ctrl_handler *hdl;
1313 struct vb2_queue *vq;
1314 int ret;
1315
1316 /* set the default pix */
1317 pix = &vout->pix;
1318
1319 /* Set the default picture of QVGA */
1320 pix->width = QQVGA_WIDTH;
1321 pix->height = QQVGA_HEIGHT;
1322
1323 /* Default pixel format is RGB 5-6-5 */
1324 pix->pixelformat = V4L2_PIX_FMT_RGB565;
1325 pix->field = V4L2_FIELD_NONE;
1326 pix->bytesperline = pix->width * 2;
1327 pix->sizeimage = pix->bytesperline * pix->height;
1328 pix->colorspace = V4L2_COLORSPACE_SRGB;
1329
1330 vout->bpp = RGB565_BPP;
1331 vout->fbuf.fmt.width = display->panel.timings.x_res;
1332 vout->fbuf.fmt.height = display->panel.timings.y_res;
1333 vout->cropped_offset = 0;
1334
1335 /* Set the data structures for the overlay parameters*/
1336 vout->fbuf.flags = V4L2_FBUF_FLAG_OVERLAY;
1337 vout->fbuf.capability = V4L2_FBUF_CAP_LOCAL_ALPHA |
1338 V4L2_FBUF_CAP_SRC_CHROMAKEY | V4L2_FBUF_CAP_CHROMAKEY |
1339 V4L2_FBUF_CAP_EXTERNOVERLAY;
1340 if (ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) {
1341 vout->win.global_alpha = 255;
1342 vout->fbuf.capability |= V4L2_FBUF_CAP_GLOBAL_ALPHA;
1343 vout->fbuf.flags |= V4L2_FBUF_FLAG_GLOBAL_ALPHA;
1344 } else {
1345 vout->win.global_alpha = 0;
1346 }
1347 vout->win.field = V4L2_FIELD_NONE;
1348
1349 omap_vout_new_format(pix, &vout->fbuf, &vout->crop, &vout->win);
1350
1351 hdl = &vout->ctrl_handler;
1352 v4l2_ctrl_handler_init(hdl, 3);
1353 if (vout->vid_info.rotation_type == VOUT_ROT_VRFB) {
1354 v4l2_ctrl_new_std(hdl, &omap_vout_ctrl_ops,
1355 V4L2_CID_ROTATE, 0, 270, 90, 0);
1356 v4l2_ctrl_new_std(hdl, &omap_vout_ctrl_ops,
1357 V4L2_CID_VFLIP, 0, 1, 1, 0);
1358 }
1359 v4l2_ctrl_new_std(hdl, &omap_vout_ctrl_ops,
1360 V4L2_CID_BG_COLOR, 0, 0xffffff, 1, 0);
1361 if (hdl->error)
1362 return hdl->error;
1363
1364 vout->rotation = 0;
1365 vout->mirror = false;
1366 INIT_LIST_HEAD(&vout->dma_queue);
1367 if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
1368 vout->vrfb_bpp = 2;
1369
1370 /* initialize the video_device struct */
1371 vfd = vout->vfd = video_device_alloc();
1372
1373 if (!vfd) {
1374 printk(KERN_ERR VOUT_NAME
1375 ": could not allocate video device struct\n");
1376 v4l2_ctrl_handler_free(hdl);
1377 return -ENOMEM;
1378 }
1379 vfd->ctrl_handler = hdl;
1380 vfd->release = video_device_release;
1381 vfd->ioctl_ops = &vout_ioctl_ops;
1382
1383 strscpy(vfd->name, VOUT_NAME, sizeof(vfd->name));
1384
1385 vfd->fops = &omap_vout_fops;
1386 vfd->v4l2_dev = &vout->vid_dev->v4l2_dev;
1387 vfd->vfl_dir = VFL_DIR_TX;
1388 vfd->minor = -1;
1389 vfd->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_OUTPUT |
1390 V4L2_CAP_VIDEO_OUTPUT_OVERLAY;
1391 mutex_init(&vout->lock);
1392
1393 vq = &vout->vq;
1394 vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1395 vq->io_modes = VB2_MMAP | VB2_DMABUF;
1396 vq->drv_priv = vout;
1397 vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1398 vq->buf_struct_size = sizeof(struct omap_vout_buffer);
1399 vq->dev = vfd->v4l2_dev->dev;
1400
1401 vq->ops = &omap_vout_vb2_ops;
1402 vq->mem_ops = &vb2_dma_contig_memops;
1403 vq->lock = &vout->lock;
1404 vq->min_buffers_needed = 1;
1405 vfd->queue = vq;
1406
1407 ret = vb2_queue_init(vq);
1408 if (ret) {
1409 v4l2_ctrl_handler_free(hdl);
1410 video_device_release(vfd);
1411 }
1412 return ret;
1413 }
1414
1415 /* Setup video buffers */
omap_vout_setup_video_bufs(struct platform_device * pdev,int vid_num)1416 static int __init omap_vout_setup_video_bufs(struct platform_device *pdev,
1417 int vid_num)
1418 {
1419 struct omapvideo_info *ovid;
1420 struct omap_vout_device *vout;
1421 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1422 struct omap2video_device *vid_dev =
1423 container_of(v4l2_dev, struct omap2video_device, v4l2_dev);
1424 int ret = 0;
1425
1426 vout = vid_dev->vouts[vid_num];
1427 ovid = &vout->vid_info;
1428
1429 if (ovid->rotation_type == VOUT_ROT_VRFB) {
1430 bool static_vrfb_allocation = (vid_num == 0) ?
1431 vid1_static_vrfb_alloc : vid2_static_vrfb_alloc;
1432 ret = omap_vout_setup_vrfb_bufs(pdev, vid_num,
1433 static_vrfb_allocation);
1434 }
1435 return ret;
1436 }
1437
1438 /* Create video out devices */
omap_vout_create_video_devices(struct platform_device * pdev)1439 static int __init omap_vout_create_video_devices(struct platform_device *pdev)
1440 {
1441 int ret = 0, k;
1442 struct omap_vout_device *vout;
1443 struct video_device *vfd = NULL;
1444 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1445 struct omap2video_device *vid_dev = container_of(v4l2_dev,
1446 struct omap2video_device, v4l2_dev);
1447 struct omap_overlay *ovl = vid_dev->overlays[0];
1448 struct omap_overlay_info info;
1449
1450 ovl->get_overlay_info(ovl, &info);
1451
1452 for (k = 0; k < pdev->num_resources; k++) {
1453
1454 vout = kzalloc(sizeof(struct omap_vout_device), GFP_KERNEL);
1455 if (!vout) {
1456 dev_err(&pdev->dev, ": could not allocate memory\n");
1457 return -ENOMEM;
1458 }
1459
1460 vout->vid = k;
1461 vid_dev->vouts[k] = vout;
1462 vout->vid_dev = vid_dev;
1463 /* Select video2 if only 1 overlay is controlled by V4L2 */
1464 if (pdev->num_resources == 1)
1465 vout->vid_info.overlays[0] = vid_dev->overlays[k + 2];
1466 else
1467 /* Else select video1 and video2 one by one. */
1468 vout->vid_info.overlays[0] = vid_dev->overlays[k + 1];
1469 vout->vid_info.num_overlays = 1;
1470 vout->vid_info.id = k + 1;
1471 spin_lock_init(&vout->vbq_lock);
1472 /*
1473 * Set the framebuffer base, this allows applications to find
1474 * the fb corresponding to this overlay.
1475 *
1476 * To be precise: fbuf.base should match smem_start of
1477 * struct fb_fix_screeninfo.
1478 */
1479 vout->fbuf.base = (void *)info.paddr;
1480
1481 /* Set VRFB as rotation_type for omap2 and omap3 */
1482 if (omap_vout_dss_omap24xx() || omap_vout_dss_omap34xx())
1483 vout->vid_info.rotation_type = VOUT_ROT_VRFB;
1484
1485 /* Setup the default configuration for the video devices
1486 */
1487 if (omap_vout_setup_video_data(vout) != 0) {
1488 ret = -ENOMEM;
1489 goto error;
1490 }
1491
1492 /* Allocate default number of buffers for the video streaming
1493 * and reserve the VRFB space for rotation
1494 */
1495 if (omap_vout_setup_video_bufs(pdev, k) != 0) {
1496 ret = -ENOMEM;
1497 goto error1;
1498 }
1499
1500 /* Register the Video device with V4L2
1501 */
1502 vfd = vout->vfd;
1503 if (video_register_device(vfd, VFL_TYPE_VIDEO, -1) < 0) {
1504 dev_err(&pdev->dev,
1505 ": Could not register Video for Linux device\n");
1506 vfd->minor = -1;
1507 ret = -ENODEV;
1508 goto error2;
1509 }
1510 video_set_drvdata(vfd, vout);
1511
1512 dev_info(&pdev->dev,
1513 ": registered and initialized video device %d\n",
1514 vfd->minor);
1515 if (k == (pdev->num_resources - 1))
1516 return 0;
1517
1518 continue;
1519 error2:
1520 if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
1521 omap_vout_release_vrfb(vout);
1522 error1:
1523 video_device_release(vfd);
1524 error:
1525 kfree(vout);
1526 return ret;
1527 }
1528
1529 return -ENODEV;
1530 }
1531 /* Driver functions */
omap_vout_cleanup_device(struct omap_vout_device * vout)1532 static void omap_vout_cleanup_device(struct omap_vout_device *vout)
1533 {
1534 struct video_device *vfd;
1535 struct omapvideo_info *ovid;
1536
1537 if (!vout)
1538 return;
1539
1540 vfd = vout->vfd;
1541 ovid = &vout->vid_info;
1542 if (vfd) {
1543 if (!video_is_registered(vfd)) {
1544 /*
1545 * The device was never registered, so release the
1546 * video_device struct directly.
1547 */
1548 video_device_release(vfd);
1549 } else {
1550 /*
1551 * The unregister function will release the video_device
1552 * struct as well as unregistering it.
1553 */
1554 video_unregister_device(vfd);
1555 }
1556 }
1557 v4l2_ctrl_handler_free(&vout->ctrl_handler);
1558 if (ovid->rotation_type == VOUT_ROT_VRFB) {
1559 omap_vout_release_vrfb(vout);
1560 /* Free the VRFB buffer if allocated
1561 * init time
1562 */
1563 if (vout->vrfb_static_allocation)
1564 omap_vout_free_vrfb_buffers(vout);
1565 }
1566
1567 kfree(vout);
1568 }
1569
omap_vout_remove(struct platform_device * pdev)1570 static int omap_vout_remove(struct platform_device *pdev)
1571 {
1572 int k;
1573 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1574 struct omap2video_device *vid_dev = container_of(v4l2_dev, struct
1575 omap2video_device, v4l2_dev);
1576
1577 v4l2_device_unregister(v4l2_dev);
1578 for (k = 0; k < pdev->num_resources; k++)
1579 omap_vout_cleanup_device(vid_dev->vouts[k]);
1580
1581 for (k = 0; k < vid_dev->num_displays; k++) {
1582 if (vid_dev->displays[k]->state != OMAP_DSS_DISPLAY_DISABLED)
1583 vid_dev->displays[k]->driver->disable(vid_dev->displays[k]);
1584
1585 omap_dss_put_device(vid_dev->displays[k]);
1586 }
1587 kfree(vid_dev);
1588 return 0;
1589 }
1590
omap_vout_probe(struct platform_device * pdev)1591 static int __init omap_vout_probe(struct platform_device *pdev)
1592 {
1593 int ret = 0, i;
1594 struct omap_overlay *ovl;
1595 struct omap_dss_device *dssdev = NULL;
1596 struct omap_dss_device *def_display;
1597 struct omap2video_device *vid_dev = NULL;
1598
1599 if (omapdss_is_initialized() == false)
1600 return -EPROBE_DEFER;
1601
1602 ret = omapdss_compat_init();
1603 if (ret) {
1604 dev_err(&pdev->dev, "failed to init dss\n");
1605 return ret;
1606 }
1607
1608 if (pdev->num_resources == 0) {
1609 dev_err(&pdev->dev, "probed for an unknown device\n");
1610 ret = -ENODEV;
1611 goto err_dss_init;
1612 }
1613
1614 vid_dev = kzalloc(sizeof(struct omap2video_device), GFP_KERNEL);
1615 if (vid_dev == NULL) {
1616 ret = -ENOMEM;
1617 goto err_dss_init;
1618 }
1619
1620 vid_dev->num_displays = 0;
1621 for_each_dss_dev(dssdev) {
1622 omap_dss_get_device(dssdev);
1623
1624 if (!dssdev->driver) {
1625 dev_warn(&pdev->dev, "no driver for display: %s\n",
1626 dssdev->name);
1627 omap_dss_put_device(dssdev);
1628 continue;
1629 }
1630
1631 vid_dev->displays[vid_dev->num_displays++] = dssdev;
1632 }
1633
1634 if (vid_dev->num_displays == 0) {
1635 dev_err(&pdev->dev, "no displays\n");
1636 ret = -EINVAL;
1637 goto probe_err0;
1638 }
1639
1640 vid_dev->num_overlays = omap_dss_get_num_overlays();
1641 for (i = 0; i < vid_dev->num_overlays; i++)
1642 vid_dev->overlays[i] = omap_dss_get_overlay(i);
1643
1644 vid_dev->num_managers = omap_dss_get_num_overlay_managers();
1645 for (i = 0; i < vid_dev->num_managers; i++)
1646 vid_dev->managers[i] = omap_dss_get_overlay_manager(i);
1647
1648 /* Get the Video1 overlay and video2 overlay.
1649 * Setup the Display attached to that overlays
1650 */
1651 for (i = 1; i < vid_dev->num_overlays; i++) {
1652 ovl = omap_dss_get_overlay(i);
1653 dssdev = ovl->get_device(ovl);
1654
1655 if (dssdev) {
1656 def_display = dssdev;
1657 } else {
1658 dev_warn(&pdev->dev, "cannot find display\n");
1659 def_display = NULL;
1660 }
1661 if (def_display) {
1662 struct omap_dss_driver *dssdrv = def_display->driver;
1663
1664 ret = dssdrv->enable(def_display);
1665 if (ret) {
1666 /* Here we are not considering a error
1667 * as display may be enabled by frame
1668 * buffer driver
1669 */
1670 dev_warn(&pdev->dev,
1671 "'%s' Display already enabled\n",
1672 def_display->name);
1673 }
1674 }
1675 }
1676
1677 if (v4l2_device_register(&pdev->dev, &vid_dev->v4l2_dev) < 0) {
1678 dev_err(&pdev->dev, "v4l2_device_register failed\n");
1679 ret = -ENODEV;
1680 goto probe_err1;
1681 }
1682
1683 ret = omap_vout_create_video_devices(pdev);
1684 if (ret)
1685 goto probe_err2;
1686
1687 for (i = 0; i < vid_dev->num_displays; i++) {
1688 struct omap_dss_device *display = vid_dev->displays[i];
1689
1690 if (display->driver->update)
1691 display->driver->update(display, 0, 0,
1692 display->panel.timings.x_res,
1693 display->panel.timings.y_res);
1694 }
1695 return 0;
1696
1697 probe_err2:
1698 v4l2_device_unregister(&vid_dev->v4l2_dev);
1699 probe_err1:
1700 for (i = 1; i < vid_dev->num_overlays; i++) {
1701 def_display = NULL;
1702 ovl = omap_dss_get_overlay(i);
1703 dssdev = ovl->get_device(ovl);
1704
1705 if (dssdev)
1706 def_display = dssdev;
1707
1708 if (def_display && def_display->driver)
1709 def_display->driver->disable(def_display);
1710 }
1711 probe_err0:
1712 kfree(vid_dev);
1713 err_dss_init:
1714 omapdss_compat_uninit();
1715 return ret;
1716 }
1717
1718 static struct platform_driver omap_vout_driver = {
1719 .driver = {
1720 .name = VOUT_NAME,
1721 },
1722 .remove = omap_vout_remove,
1723 };
1724
omap_vout_init(void)1725 static int __init omap_vout_init(void)
1726 {
1727 if (platform_driver_probe(&omap_vout_driver, omap_vout_probe) != 0) {
1728 printk(KERN_ERR VOUT_NAME ":Could not register Video driver\n");
1729 return -EINVAL;
1730 }
1731 return 0;
1732 }
1733
omap_vout_cleanup(void)1734 static void omap_vout_cleanup(void)
1735 {
1736 platform_driver_unregister(&omap_vout_driver);
1737 }
1738
1739 late_initcall(omap_vout_init);
1740 module_exit(omap_vout_cleanup);
1741