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Merge tag 'ftracetest-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt...
[deliverable/linux.git] / drivers / media / platform / omap / omap_vout.c
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/videobuf-dma-contig.h>
44 #include <media/v4l2-device.h>
45 #include <media/v4l2-ioctl.h>
46
47 #include <video/omapvrfb.h>
48 #include <video/omapdss.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 static struct videobuf_queue_ops video_vbq_ops;
67 /* Variables configurable through module params*/
68 static u32 video1_numbuffers = 3;
69 static u32 video2_numbuffers = 3;
70 static u32 video1_bufsize = OMAP_VOUT_MAX_BUF_SIZE;
71 static u32 video2_bufsize = OMAP_VOUT_MAX_BUF_SIZE;
72 static bool vid1_static_vrfb_alloc;
73 static bool vid2_static_vrfb_alloc;
74 static bool debug;
75
76 /* Module parameters */
77 module_param(video1_numbuffers, uint, S_IRUGO);
78 MODULE_PARM_DESC(video1_numbuffers,
79 "Number of buffers to be allocated at init time for Video1 device.");
80
81 module_param(video2_numbuffers, uint, S_IRUGO);
82 MODULE_PARM_DESC(video2_numbuffers,
83 "Number of buffers to be allocated at init time for Video2 device.");
84
85 module_param(video1_bufsize, uint, S_IRUGO);
86 MODULE_PARM_DESC(video1_bufsize,
87 "Size of the buffer to be allocated for video1 device");
88
89 module_param(video2_bufsize, uint, S_IRUGO);
90 MODULE_PARM_DESC(video2_bufsize,
91 "Size of the buffer to be allocated for video2 device");
92
93 module_param(vid1_static_vrfb_alloc, bool, S_IRUGO);
94 MODULE_PARM_DESC(vid1_static_vrfb_alloc,
95 "Static allocation of the VRFB buffer for video1 device");
96
97 module_param(vid2_static_vrfb_alloc, bool, S_IRUGO);
98 MODULE_PARM_DESC(vid2_static_vrfb_alloc,
99 "Static allocation of the VRFB buffer for video2 device");
100
101 module_param(debug, bool, S_IRUGO);
102 MODULE_PARM_DESC(debug, "Debug level (0-1)");
103
104 /* list of image formats supported by OMAP2 video pipelines */
105 static const struct v4l2_fmtdesc omap_formats[] = {
106 {
107 /* Note: V4L2 defines RGB565 as:
108 *
109 * Byte 0 Byte 1
110 * g2 g1 g0 r4 r3 r2 r1 r0 b4 b3 b2 b1 b0 g5 g4 g3
111 *
112 * We interpret RGB565 as:
113 *
114 * Byte 0 Byte 1
115 * g2 g1 g0 b4 b3 b2 b1 b0 r4 r3 r2 r1 r0 g5 g4 g3
116 */
117 .description = "RGB565, le",
118 .pixelformat = V4L2_PIX_FMT_RGB565,
119 },
120 {
121 /* Note: V4L2 defines RGB32 as: RGB-8-8-8-8 we use
122 * this for RGB24 unpack mode, the last 8 bits are ignored
123 * */
124 .description = "RGB32, le",
125 .pixelformat = V4L2_PIX_FMT_RGB32,
126 },
127 {
128 /* Note: V4L2 defines RGB24 as: RGB-8-8-8 we use
129 * this for RGB24 packed mode
130 *
131 */
132 .description = "RGB24, le",
133 .pixelformat = V4L2_PIX_FMT_RGB24,
134 },
135 {
136 .description = "YUYV (YUV 4:2:2), packed",
137 .pixelformat = V4L2_PIX_FMT_YUYV,
138 },
139 {
140 .description = "UYVY, packed",
141 .pixelformat = V4L2_PIX_FMT_UYVY,
142 },
143 };
144
145 #define NUM_OUTPUT_FORMATS (ARRAY_SIZE(omap_formats))
146
147 /*
148 * Try format
149 */
150 static int omap_vout_try_format(struct v4l2_pix_format *pix)
151 {
152 int ifmt, bpp = 0;
153
154 pix->height = clamp(pix->height, (u32)VID_MIN_HEIGHT,
155 (u32)VID_MAX_HEIGHT);
156 pix->width = clamp(pix->width, (u32)VID_MIN_WIDTH, (u32)VID_MAX_WIDTH);
157
158 for (ifmt = 0; ifmt < NUM_OUTPUT_FORMATS; ifmt++) {
159 if (pix->pixelformat == omap_formats[ifmt].pixelformat)
160 break;
161 }
162
163 if (ifmt == NUM_OUTPUT_FORMATS)
164 ifmt = 0;
165
166 pix->pixelformat = omap_formats[ifmt].pixelformat;
167 pix->field = V4L2_FIELD_ANY;
168
169 switch (pix->pixelformat) {
170 case V4L2_PIX_FMT_YUYV:
171 case V4L2_PIX_FMT_UYVY:
172 default:
173 pix->colorspace = V4L2_COLORSPACE_JPEG;
174 bpp = YUYV_BPP;
175 break;
176 case V4L2_PIX_FMT_RGB565:
177 case V4L2_PIX_FMT_RGB565X:
178 pix->colorspace = V4L2_COLORSPACE_SRGB;
179 bpp = RGB565_BPP;
180 break;
181 case V4L2_PIX_FMT_RGB24:
182 pix->colorspace = V4L2_COLORSPACE_SRGB;
183 bpp = RGB24_BPP;
184 break;
185 case V4L2_PIX_FMT_RGB32:
186 case V4L2_PIX_FMT_BGR32:
187 pix->colorspace = V4L2_COLORSPACE_SRGB;
188 bpp = RGB32_BPP;
189 break;
190 }
191 pix->bytesperline = pix->width * bpp;
192 pix->sizeimage = pix->bytesperline * pix->height;
193
194 return bpp;
195 }
196
197 /*
198 * omap_vout_uservirt_to_phys: This inline function is used to convert user
199 * space virtual address to physical address.
200 */
201 static u32 omap_vout_uservirt_to_phys(u32 virtp)
202 {
203 unsigned long physp = 0;
204 struct vm_area_struct *vma;
205 struct mm_struct *mm = current->mm;
206
207 /* For kernel direct-mapped memory, take the easy way */
208 if (virtp >= PAGE_OFFSET)
209 return virt_to_phys((void *) virtp);
210
211 down_read(&current->mm->mmap_sem);
212 vma = find_vma(mm, virtp);
213 if (vma && (vma->vm_flags & VM_IO) && vma->vm_pgoff) {
214 /* this will catch, kernel-allocated, mmaped-to-usermode
215 addresses */
216 physp = (vma->vm_pgoff << PAGE_SHIFT) + (virtp - vma->vm_start);
217 up_read(&current->mm->mmap_sem);
218 } else {
219 /* otherwise, use get_user_pages() for general userland pages */
220 int res, nr_pages = 1;
221 struct page *pages;
222
223 res = get_user_pages(current, current->mm, virtp, nr_pages, 1,
224 0, &pages, NULL);
225 up_read(&current->mm->mmap_sem);
226
227 if (res == nr_pages) {
228 physp = __pa(page_address(&pages[0]) +
229 (virtp & ~PAGE_MASK));
230 } else {
231 printk(KERN_WARNING VOUT_NAME
232 "get_user_pages failed\n");
233 return 0;
234 }
235 }
236
237 return physp;
238 }
239
240 /*
241 * Free the V4L2 buffers
242 */
243 void omap_vout_free_buffers(struct omap_vout_device *vout)
244 {
245 int i, numbuffers;
246
247 /* Allocate memory for the buffers */
248 numbuffers = (vout->vid) ? video2_numbuffers : video1_numbuffers;
249 vout->buffer_size = (vout->vid) ? video2_bufsize : video1_bufsize;
250
251 for (i = 0; i < numbuffers; i++) {
252 omap_vout_free_buffer(vout->buf_virt_addr[i],
253 vout->buffer_size);
254 vout->buf_phy_addr[i] = 0;
255 vout->buf_virt_addr[i] = 0;
256 }
257 }
258
259 /*
260 * Convert V4L2 rotation to DSS rotation
261 * V4L2 understand 0, 90, 180, 270.
262 * Convert to 0, 1, 2 and 3 respectively for DSS
263 */
264 static int v4l2_rot_to_dss_rot(int v4l2_rotation,
265 enum dss_rotation *rotation, bool mirror)
266 {
267 int ret = 0;
268
269 switch (v4l2_rotation) {
270 case 90:
271 *rotation = dss_rotation_90_degree;
272 break;
273 case 180:
274 *rotation = dss_rotation_180_degree;
275 break;
276 case 270:
277 *rotation = dss_rotation_270_degree;
278 break;
279 case 0:
280 *rotation = dss_rotation_0_degree;
281 break;
282 default:
283 ret = -EINVAL;
284 }
285 return ret;
286 }
287
288 static int omap_vout_calculate_offset(struct omap_vout_device *vout)
289 {
290 struct omapvideo_info *ovid;
291 struct v4l2_rect *crop = &vout->crop;
292 struct v4l2_pix_format *pix = &vout->pix;
293 int *cropped_offset = &vout->cropped_offset;
294 int ps = 2, line_length = 0;
295
296 ovid = &vout->vid_info;
297
298 if (ovid->rotation_type == VOUT_ROT_VRFB) {
299 omap_vout_calculate_vrfb_offset(vout);
300 } else {
301 vout->line_length = line_length = pix->width;
302
303 if (V4L2_PIX_FMT_YUYV == pix->pixelformat ||
304 V4L2_PIX_FMT_UYVY == pix->pixelformat)
305 ps = 2;
306 else if (V4L2_PIX_FMT_RGB32 == pix->pixelformat)
307 ps = 4;
308 else if (V4L2_PIX_FMT_RGB24 == pix->pixelformat)
309 ps = 3;
310
311 vout->ps = ps;
312
313 *cropped_offset = (line_length * ps) *
314 crop->top + crop->left * ps;
315 }
316
317 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "%s Offset:%x\n",
318 __func__, vout->cropped_offset);
319
320 return 0;
321 }
322
323 /*
324 * Convert V4L2 pixel format to DSS pixel format
325 */
326 static int video_mode_to_dss_mode(struct omap_vout_device *vout)
327 {
328 struct omap_overlay *ovl;
329 struct omapvideo_info *ovid;
330 struct v4l2_pix_format *pix = &vout->pix;
331 enum omap_color_mode mode;
332
333 ovid = &vout->vid_info;
334 ovl = ovid->overlays[0];
335
336 switch (pix->pixelformat) {
337 case V4L2_PIX_FMT_YUYV:
338 mode = OMAP_DSS_COLOR_YUV2;
339 break;
340 case V4L2_PIX_FMT_UYVY:
341 mode = OMAP_DSS_COLOR_UYVY;
342 break;
343 case V4L2_PIX_FMT_RGB565:
344 mode = OMAP_DSS_COLOR_RGB16;
345 break;
346 case V4L2_PIX_FMT_RGB24:
347 mode = OMAP_DSS_COLOR_RGB24P;
348 break;
349 case V4L2_PIX_FMT_RGB32:
350 mode = (ovl->id == OMAP_DSS_VIDEO1) ?
351 OMAP_DSS_COLOR_RGB24U : OMAP_DSS_COLOR_ARGB32;
352 break;
353 case V4L2_PIX_FMT_BGR32:
354 mode = OMAP_DSS_COLOR_RGBX32;
355 break;
356 default:
357 mode = -EINVAL;
358 break;
359 }
360 return mode;
361 }
362
363 /*
364 * Setup the overlay
365 */
366 static int omapvid_setup_overlay(struct omap_vout_device *vout,
367 struct omap_overlay *ovl, int posx, int posy, int outw,
368 int outh, u32 addr)
369 {
370 int ret = 0;
371 struct omap_overlay_info info;
372 int cropheight, cropwidth, pixwidth;
373
374 if ((ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0 &&
375 (outw != vout->pix.width || outh != vout->pix.height)) {
376 ret = -EINVAL;
377 goto setup_ovl_err;
378 }
379
380 vout->dss_mode = video_mode_to_dss_mode(vout);
381 if (vout->dss_mode == -EINVAL) {
382 ret = -EINVAL;
383 goto setup_ovl_err;
384 }
385
386 /* Setup the input plane parameters according to
387 * rotation value selected.
388 */
389 if (is_rotation_90_or_270(vout)) {
390 cropheight = vout->crop.width;
391 cropwidth = vout->crop.height;
392 pixwidth = vout->pix.height;
393 } else {
394 cropheight = vout->crop.height;
395 cropwidth = vout->crop.width;
396 pixwidth = vout->pix.width;
397 }
398
399 ovl->get_overlay_info(ovl, &info);
400 info.paddr = addr;
401 info.width = cropwidth;
402 info.height = cropheight;
403 info.color_mode = vout->dss_mode;
404 info.mirror = vout->mirror;
405 info.pos_x = posx;
406 info.pos_y = posy;
407 info.out_width = outw;
408 info.out_height = outh;
409 info.global_alpha = vout->win.global_alpha;
410 if (!is_rotation_enabled(vout)) {
411 info.rotation = 0;
412 info.rotation_type = OMAP_DSS_ROT_DMA;
413 info.screen_width = pixwidth;
414 } else {
415 info.rotation = vout->rotation;
416 info.rotation_type = OMAP_DSS_ROT_VRFB;
417 info.screen_width = 2048;
418 }
419
420 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
421 "%s enable=%d addr=%x width=%d\n height=%d color_mode=%d\n"
422 "rotation=%d mirror=%d posx=%d posy=%d out_width = %d \n"
423 "out_height=%d rotation_type=%d screen_width=%d\n",
424 __func__, ovl->is_enabled(ovl), info.paddr, info.width, info.height,
425 info.color_mode, info.rotation, info.mirror, info.pos_x,
426 info.pos_y, info.out_width, info.out_height, info.rotation_type,
427 info.screen_width);
428
429 ret = ovl->set_overlay_info(ovl, &info);
430 if (ret)
431 goto setup_ovl_err;
432
433 return 0;
434
435 setup_ovl_err:
436 v4l2_warn(&vout->vid_dev->v4l2_dev, "setup_overlay failed\n");
437 return ret;
438 }
439
440 /*
441 * Initialize the overlay structure
442 */
443 static int omapvid_init(struct omap_vout_device *vout, u32 addr)
444 {
445 int ret = 0, i;
446 struct v4l2_window *win;
447 struct omap_overlay *ovl;
448 int posx, posy, outw, outh, temp;
449 struct omap_video_timings *timing;
450 struct omapvideo_info *ovid = &vout->vid_info;
451
452 win = &vout->win;
453 for (i = 0; i < ovid->num_overlays; i++) {
454 struct omap_dss_device *dssdev;
455
456 ovl = ovid->overlays[i];
457 dssdev = ovl->get_device(ovl);
458
459 if (!dssdev)
460 return -EINVAL;
461
462 timing = &dssdev->panel.timings;
463
464 outw = win->w.width;
465 outh = win->w.height;
466 switch (vout->rotation) {
467 case dss_rotation_90_degree:
468 /* Invert the height and width for 90
469 * and 270 degree rotation
470 */
471 temp = outw;
472 outw = outh;
473 outh = temp;
474 posy = (timing->y_res - win->w.width) - win->w.left;
475 posx = win->w.top;
476 break;
477
478 case dss_rotation_180_degree:
479 posx = (timing->x_res - win->w.width) - win->w.left;
480 posy = (timing->y_res - win->w.height) - win->w.top;
481 break;
482
483 case dss_rotation_270_degree:
484 temp = outw;
485 outw = outh;
486 outh = temp;
487 posy = win->w.left;
488 posx = (timing->x_res - win->w.height) - win->w.top;
489 break;
490
491 default:
492 posx = win->w.left;
493 posy = win->w.top;
494 break;
495 }
496
497 ret = omapvid_setup_overlay(vout, ovl, posx, posy,
498 outw, outh, addr);
499 if (ret)
500 goto omapvid_init_err;
501 }
502 return 0;
503
504 omapvid_init_err:
505 v4l2_warn(&vout->vid_dev->v4l2_dev, "apply_changes failed\n");
506 return ret;
507 }
508
509 /*
510 * Apply the changes set the go bit of DSS
511 */
512 static int omapvid_apply_changes(struct omap_vout_device *vout)
513 {
514 int i;
515 struct omap_overlay *ovl;
516 struct omapvideo_info *ovid = &vout->vid_info;
517
518 for (i = 0; i < ovid->num_overlays; i++) {
519 struct omap_dss_device *dssdev;
520
521 ovl = ovid->overlays[i];
522 dssdev = ovl->get_device(ovl);
523 if (!dssdev)
524 return -EINVAL;
525 ovl->manager->apply(ovl->manager);
526 }
527
528 return 0;
529 }
530
531 static int omapvid_handle_interlace_display(struct omap_vout_device *vout,
532 unsigned int irqstatus, struct timeval timevalue)
533 {
534 u32 fid;
535
536 if (vout->first_int) {
537 vout->first_int = 0;
538 goto err;
539 }
540
541 if (irqstatus & DISPC_IRQ_EVSYNC_ODD)
542 fid = 1;
543 else if (irqstatus & DISPC_IRQ_EVSYNC_EVEN)
544 fid = 0;
545 else
546 goto err;
547
548 vout->field_id ^= 1;
549 if (fid != vout->field_id) {
550 if (fid == 0)
551 vout->field_id = fid;
552 } else if (0 == fid) {
553 if (vout->cur_frm == vout->next_frm)
554 goto err;
555
556 vout->cur_frm->ts = timevalue;
557 vout->cur_frm->state = VIDEOBUF_DONE;
558 wake_up_interruptible(&vout->cur_frm->done);
559 vout->cur_frm = vout->next_frm;
560 } else {
561 if (list_empty(&vout->dma_queue) ||
562 (vout->cur_frm != vout->next_frm))
563 goto err;
564 }
565
566 return vout->field_id;
567 err:
568 return 0;
569 }
570
571 static void omap_vout_isr(void *arg, unsigned int irqstatus)
572 {
573 int ret, fid, mgr_id;
574 u32 addr, irq;
575 struct omap_overlay *ovl;
576 struct timeval timevalue;
577 struct omapvideo_info *ovid;
578 struct omap_dss_device *cur_display;
579 struct omap_vout_device *vout = (struct omap_vout_device *)arg;
580
581 if (!vout->streaming)
582 return;
583
584 ovid = &vout->vid_info;
585 ovl = ovid->overlays[0];
586
587 mgr_id = ovl->manager->id;
588
589 /* get the display device attached to the overlay */
590 cur_display = ovl->get_device(ovl);
591
592 if (!cur_display)
593 return;
594
595 spin_lock(&vout->vbq_lock);
596 v4l2_get_timestamp(&timevalue);
597
598 switch (cur_display->type) {
599 case OMAP_DISPLAY_TYPE_DSI:
600 case OMAP_DISPLAY_TYPE_DPI:
601 case OMAP_DISPLAY_TYPE_DVI:
602 if (mgr_id == OMAP_DSS_CHANNEL_LCD)
603 irq = DISPC_IRQ_VSYNC;
604 else if (mgr_id == OMAP_DSS_CHANNEL_LCD2)
605 irq = DISPC_IRQ_VSYNC2;
606 else
607 goto vout_isr_err;
608
609 if (!(irqstatus & irq))
610 goto vout_isr_err;
611 break;
612 case OMAP_DISPLAY_TYPE_VENC:
613 fid = omapvid_handle_interlace_display(vout, irqstatus,
614 timevalue);
615 if (!fid)
616 goto vout_isr_err;
617 break;
618 case OMAP_DISPLAY_TYPE_HDMI:
619 if (!(irqstatus & DISPC_IRQ_EVSYNC_EVEN))
620 goto vout_isr_err;
621 break;
622 default:
623 goto vout_isr_err;
624 }
625
626 if (!vout->first_int && (vout->cur_frm != vout->next_frm)) {
627 vout->cur_frm->ts = timevalue;
628 vout->cur_frm->state = VIDEOBUF_DONE;
629 wake_up_interruptible(&vout->cur_frm->done);
630 vout->cur_frm = vout->next_frm;
631 }
632
633 vout->first_int = 0;
634 if (list_empty(&vout->dma_queue))
635 goto vout_isr_err;
636
637 vout->next_frm = list_entry(vout->dma_queue.next,
638 struct videobuf_buffer, queue);
639 list_del(&vout->next_frm->queue);
640
641 vout->next_frm->state = VIDEOBUF_ACTIVE;
642
643 addr = (unsigned long) vout->queued_buf_addr[vout->next_frm->i]
644 + vout->cropped_offset;
645
646 /* First save the configuration in ovelray structure */
647 ret = omapvid_init(vout, addr);
648 if (ret) {
649 printk(KERN_ERR VOUT_NAME
650 "failed to set overlay info\n");
651 goto vout_isr_err;
652 }
653
654 /* Enable the pipeline and set the Go bit */
655 ret = omapvid_apply_changes(vout);
656 if (ret)
657 printk(KERN_ERR VOUT_NAME "failed to change mode\n");
658
659 vout_isr_err:
660 spin_unlock(&vout->vbq_lock);
661 }
662
663 /* Video buffer call backs */
664
665 /*
666 * Buffer setup function is called by videobuf layer when REQBUF ioctl is
667 * called. This is used to setup buffers and return size and count of
668 * buffers allocated. After the call to this buffer, videobuf layer will
669 * setup buffer queue depending on the size and count of buffers
670 */
671 static int omap_vout_buffer_setup(struct videobuf_queue *q, unsigned int *count,
672 unsigned int *size)
673 {
674 int startindex = 0, i, j;
675 u32 phy_addr = 0, virt_addr = 0;
676 struct omap_vout_device *vout = q->priv_data;
677 struct omapvideo_info *ovid = &vout->vid_info;
678 int vid_max_buf_size;
679
680 if (!vout)
681 return -EINVAL;
682
683 vid_max_buf_size = vout->vid == OMAP_VIDEO1 ? video1_bufsize :
684 video2_bufsize;
685
686 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != q->type)
687 return -EINVAL;
688
689 startindex = (vout->vid == OMAP_VIDEO1) ?
690 video1_numbuffers : video2_numbuffers;
691 if (V4L2_MEMORY_MMAP == vout->memory && *count < startindex)
692 *count = startindex;
693
694 if (ovid->rotation_type == VOUT_ROT_VRFB) {
695 if (omap_vout_vrfb_buffer_setup(vout, count, startindex))
696 return -ENOMEM;
697 }
698
699 if (V4L2_MEMORY_MMAP != vout->memory)
700 return 0;
701
702 /* Now allocated the V4L2 buffers */
703 *size = PAGE_ALIGN(vout->pix.width * vout->pix.height * vout->bpp);
704 startindex = (vout->vid == OMAP_VIDEO1) ?
705 video1_numbuffers : video2_numbuffers;
706
707 /* Check the size of the buffer */
708 if (*size > vid_max_buf_size) {
709 v4l2_err(&vout->vid_dev->v4l2_dev,
710 "buffer allocation mismatch [%u] [%u]\n",
711 *size, vout->buffer_size);
712 return -ENOMEM;
713 }
714
715 for (i = startindex; i < *count; i++) {
716 vout->buffer_size = *size;
717
718 virt_addr = omap_vout_alloc_buffer(vout->buffer_size,
719 &phy_addr);
720 if (!virt_addr) {
721 if (ovid->rotation_type == VOUT_ROT_NONE) {
722 break;
723 } else {
724 if (!is_rotation_enabled(vout))
725 break;
726 /* Free the VRFB buffers if no space for V4L2 buffers */
727 for (j = i; j < *count; j++) {
728 omap_vout_free_buffer(
729 vout->smsshado_virt_addr[j],
730 vout->smsshado_size);
731 vout->smsshado_virt_addr[j] = 0;
732 vout->smsshado_phy_addr[j] = 0;
733 }
734 }
735 }
736 vout->buf_virt_addr[i] = virt_addr;
737 vout->buf_phy_addr[i] = phy_addr;
738 }
739 *count = vout->buffer_allocated = i;
740
741 return 0;
742 }
743
744 /*
745 * Free the V4L2 buffers additionally allocated than default
746 * number of buffers
747 */
748 static void omap_vout_free_extra_buffers(struct omap_vout_device *vout)
749 {
750 int num_buffers = 0, i;
751
752 num_buffers = (vout->vid == OMAP_VIDEO1) ?
753 video1_numbuffers : video2_numbuffers;
754
755 for (i = num_buffers; i < vout->buffer_allocated; i++) {
756 if (vout->buf_virt_addr[i])
757 omap_vout_free_buffer(vout->buf_virt_addr[i],
758 vout->buffer_size);
759
760 vout->buf_virt_addr[i] = 0;
761 vout->buf_phy_addr[i] = 0;
762 }
763 vout->buffer_allocated = num_buffers;
764 }
765
766 /*
767 * This function will be called when VIDIOC_QBUF ioctl is called.
768 * It prepare buffers before give out for the display. This function
769 * converts user space virtual address into physical address if userptr memory
770 * exchange mechanism is used. If rotation is enabled, it copies entire
771 * buffer into VRFB memory space before giving it to the DSS.
772 */
773 static int omap_vout_buffer_prepare(struct videobuf_queue *q,
774 struct videobuf_buffer *vb,
775 enum v4l2_field field)
776 {
777 struct omap_vout_device *vout = q->priv_data;
778 struct omapvideo_info *ovid = &vout->vid_info;
779
780 if (VIDEOBUF_NEEDS_INIT == vb->state) {
781 vb->width = vout->pix.width;
782 vb->height = vout->pix.height;
783 vb->size = vb->width * vb->height * vout->bpp;
784 vb->field = field;
785 }
786 vb->state = VIDEOBUF_PREPARED;
787 /* if user pointer memory mechanism is used, get the physical
788 * address of the buffer
789 */
790 if (V4L2_MEMORY_USERPTR == vb->memory) {
791 if (0 == vb->baddr)
792 return -EINVAL;
793 /* Physical address */
794 vout->queued_buf_addr[vb->i] = (u8 *)
795 omap_vout_uservirt_to_phys(vb->baddr);
796 } else {
797 u32 addr, dma_addr;
798 unsigned long size;
799
800 addr = (unsigned long) vout->buf_virt_addr[vb->i];
801 size = (unsigned long) vb->size;
802
803 dma_addr = dma_map_single(vout->vid_dev->v4l2_dev.dev, (void *) addr,
804 size, DMA_TO_DEVICE);
805 if (dma_mapping_error(vout->vid_dev->v4l2_dev.dev, dma_addr))
806 v4l2_err(&vout->vid_dev->v4l2_dev, "dma_map_single failed\n");
807
808 vout->queued_buf_addr[vb->i] = (u8 *)vout->buf_phy_addr[vb->i];
809 }
810
811 if (ovid->rotation_type == VOUT_ROT_VRFB)
812 return omap_vout_prepare_vrfb(vout, vb);
813 else
814 return 0;
815 }
816
817 /*
818 * Buffer queue function will be called from the videobuf layer when _QBUF
819 * ioctl is called. It is used to enqueue buffer, which is ready to be
820 * displayed.
821 */
822 static void omap_vout_buffer_queue(struct videobuf_queue *q,
823 struct videobuf_buffer *vb)
824 {
825 struct omap_vout_device *vout = q->priv_data;
826
827 /* Driver is also maintainig a queue. So enqueue buffer in the driver
828 * queue */
829 list_add_tail(&vb->queue, &vout->dma_queue);
830
831 vb->state = VIDEOBUF_QUEUED;
832 }
833
834 /*
835 * Buffer release function is called from videobuf layer to release buffer
836 * which are already allocated
837 */
838 static void omap_vout_buffer_release(struct videobuf_queue *q,
839 struct videobuf_buffer *vb)
840 {
841 struct omap_vout_device *vout = q->priv_data;
842
843 vb->state = VIDEOBUF_NEEDS_INIT;
844
845 if (V4L2_MEMORY_MMAP != vout->memory)
846 return;
847 }
848
849 /*
850 * File operations
851 */
852 static unsigned int omap_vout_poll(struct file *file,
853 struct poll_table_struct *wait)
854 {
855 struct omap_vout_device *vout = file->private_data;
856 struct videobuf_queue *q = &vout->vbq;
857
858 return videobuf_poll_stream(file, q, wait);
859 }
860
861 static void omap_vout_vm_open(struct vm_area_struct *vma)
862 {
863 struct omap_vout_device *vout = vma->vm_private_data;
864
865 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
866 "vm_open [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
867 vout->mmap_count++;
868 }
869
870 static void omap_vout_vm_close(struct vm_area_struct *vma)
871 {
872 struct omap_vout_device *vout = vma->vm_private_data;
873
874 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
875 "vm_close [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
876 vout->mmap_count--;
877 }
878
879 static struct vm_operations_struct omap_vout_vm_ops = {
880 .open = omap_vout_vm_open,
881 .close = omap_vout_vm_close,
882 };
883
884 static int omap_vout_mmap(struct file *file, struct vm_area_struct *vma)
885 {
886 int i;
887 void *pos;
888 unsigned long start = vma->vm_start;
889 unsigned long size = (vma->vm_end - vma->vm_start);
890 struct omap_vout_device *vout = file->private_data;
891 struct videobuf_queue *q = &vout->vbq;
892
893 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
894 " %s pgoff=0x%lx, start=0x%lx, end=0x%lx\n", __func__,
895 vma->vm_pgoff, vma->vm_start, vma->vm_end);
896
897 /* look for the buffer to map */
898 for (i = 0; i < VIDEO_MAX_FRAME; i++) {
899 if (NULL == q->bufs[i])
900 continue;
901 if (V4L2_MEMORY_MMAP != q->bufs[i]->memory)
902 continue;
903 if (q->bufs[i]->boff == (vma->vm_pgoff << PAGE_SHIFT))
904 break;
905 }
906
907 if (VIDEO_MAX_FRAME == i) {
908 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
909 "offset invalid [offset=0x%lx]\n",
910 (vma->vm_pgoff << PAGE_SHIFT));
911 return -EINVAL;
912 }
913 /* Check the size of the buffer */
914 if (size > vout->buffer_size) {
915 v4l2_err(&vout->vid_dev->v4l2_dev,
916 "insufficient memory [%lu] [%u]\n",
917 size, vout->buffer_size);
918 return -ENOMEM;
919 }
920
921 q->bufs[i]->baddr = vma->vm_start;
922
923 vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
924 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
925 vma->vm_ops = &omap_vout_vm_ops;
926 vma->vm_private_data = (void *) vout;
927 pos = (void *)vout->buf_virt_addr[i];
928 vma->vm_pgoff = virt_to_phys((void *)pos) >> PAGE_SHIFT;
929 while (size > 0) {
930 unsigned long pfn;
931 pfn = virt_to_phys((void *) pos) >> PAGE_SHIFT;
932 if (remap_pfn_range(vma, start, pfn, PAGE_SIZE, PAGE_SHARED))
933 return -EAGAIN;
934 start += PAGE_SIZE;
935 pos += PAGE_SIZE;
936 size -= PAGE_SIZE;
937 }
938 vout->mmap_count++;
939 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
940
941 return 0;
942 }
943
944 static int omap_vout_release(struct file *file)
945 {
946 unsigned int ret, i;
947 struct videobuf_queue *q;
948 struct omapvideo_info *ovid;
949 struct omap_vout_device *vout = file->private_data;
950
951 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
952 ovid = &vout->vid_info;
953
954 if (!vout)
955 return 0;
956
957 q = &vout->vbq;
958 /* Disable all the overlay managers connected with this interface */
959 for (i = 0; i < ovid->num_overlays; i++) {
960 struct omap_overlay *ovl = ovid->overlays[i];
961 struct omap_dss_device *dssdev = ovl->get_device(ovl);
962
963 if (dssdev)
964 ovl->disable(ovl);
965 }
966 /* Turn off the pipeline */
967 ret = omapvid_apply_changes(vout);
968 if (ret)
969 v4l2_warn(&vout->vid_dev->v4l2_dev,
970 "Unable to apply changes\n");
971
972 /* Free all buffers */
973 omap_vout_free_extra_buffers(vout);
974
975 /* Free the VRFB buffers only if they are allocated
976 * during reqbufs. Don't free if init time allocated
977 */
978 if (ovid->rotation_type == VOUT_ROT_VRFB) {
979 if (!vout->vrfb_static_allocation)
980 omap_vout_free_vrfb_buffers(vout);
981 }
982 videobuf_mmap_free(q);
983
984 /* Even if apply changes fails we should continue
985 freeing allocated memory */
986 if (vout->streaming) {
987 u32 mask = 0;
988
989 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN |
990 DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_VSYNC2;
991 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
992 vout->streaming = false;
993
994 videobuf_streamoff(q);
995 videobuf_queue_cancel(q);
996 }
997
998 if (vout->mmap_count != 0)
999 vout->mmap_count = 0;
1000
1001 vout->opened -= 1;
1002 file->private_data = NULL;
1003
1004 if (vout->buffer_allocated)
1005 videobuf_mmap_free(q);
1006
1007 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1008 return ret;
1009 }
1010
1011 static int omap_vout_open(struct file *file)
1012 {
1013 struct videobuf_queue *q;
1014 struct omap_vout_device *vout = NULL;
1015
1016 vout = video_drvdata(file);
1017 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
1018
1019 if (vout == NULL)
1020 return -ENODEV;
1021
1022 /* for now, we only support single open */
1023 if (vout->opened)
1024 return -EBUSY;
1025
1026 vout->opened += 1;
1027
1028 file->private_data = vout;
1029 vout->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1030
1031 q = &vout->vbq;
1032 video_vbq_ops.buf_setup = omap_vout_buffer_setup;
1033 video_vbq_ops.buf_prepare = omap_vout_buffer_prepare;
1034 video_vbq_ops.buf_release = omap_vout_buffer_release;
1035 video_vbq_ops.buf_queue = omap_vout_buffer_queue;
1036 spin_lock_init(&vout->vbq_lock);
1037
1038 videobuf_queue_dma_contig_init(q, &video_vbq_ops, q->dev,
1039 &vout->vbq_lock, vout->type, V4L2_FIELD_NONE,
1040 sizeof(struct videobuf_buffer), vout, NULL);
1041
1042 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1043 return 0;
1044 }
1045
1046 /*
1047 * V4L2 ioctls
1048 */
1049 static int vidioc_querycap(struct file *file, void *fh,
1050 struct v4l2_capability *cap)
1051 {
1052 struct omap_vout_device *vout = fh;
1053
1054 strlcpy(cap->driver, VOUT_NAME, sizeof(cap->driver));
1055 strlcpy(cap->card, vout->vfd->name, sizeof(cap->card));
1056 cap->bus_info[0] = '\0';
1057 cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_OUTPUT |
1058 V4L2_CAP_VIDEO_OUTPUT_OVERLAY;
1059
1060 return 0;
1061 }
1062
1063 static int vidioc_enum_fmt_vid_out(struct file *file, void *fh,
1064 struct v4l2_fmtdesc *fmt)
1065 {
1066 int index = fmt->index;
1067
1068 if (index >= NUM_OUTPUT_FORMATS)
1069 return -EINVAL;
1070
1071 fmt->flags = omap_formats[index].flags;
1072 strlcpy(fmt->description, omap_formats[index].description,
1073 sizeof(fmt->description));
1074 fmt->pixelformat = omap_formats[index].pixelformat;
1075
1076 return 0;
1077 }
1078
1079 static int vidioc_g_fmt_vid_out(struct file *file, void *fh,
1080 struct v4l2_format *f)
1081 {
1082 struct omap_vout_device *vout = fh;
1083
1084 f->fmt.pix = vout->pix;
1085 return 0;
1086
1087 }
1088
1089 static int vidioc_try_fmt_vid_out(struct file *file, void *fh,
1090 struct v4l2_format *f)
1091 {
1092 struct omap_overlay *ovl;
1093 struct omapvideo_info *ovid;
1094 struct omap_video_timings *timing;
1095 struct omap_vout_device *vout = fh;
1096 struct omap_dss_device *dssdev;
1097
1098 ovid = &vout->vid_info;
1099 ovl = ovid->overlays[0];
1100 /* get the display device attached to the overlay */
1101 dssdev = ovl->get_device(ovl);
1102
1103 if (!dssdev)
1104 return -EINVAL;
1105
1106 timing = &dssdev->panel.timings;
1107
1108 vout->fbuf.fmt.height = timing->y_res;
1109 vout->fbuf.fmt.width = timing->x_res;
1110
1111 omap_vout_try_format(&f->fmt.pix);
1112 return 0;
1113 }
1114
1115 static int vidioc_s_fmt_vid_out(struct file *file, void *fh,
1116 struct v4l2_format *f)
1117 {
1118 int ret, bpp;
1119 struct omap_overlay *ovl;
1120 struct omapvideo_info *ovid;
1121 struct omap_video_timings *timing;
1122 struct omap_vout_device *vout = fh;
1123 struct omap_dss_device *dssdev;
1124
1125 if (vout->streaming)
1126 return -EBUSY;
1127
1128 mutex_lock(&vout->lock);
1129
1130 ovid = &vout->vid_info;
1131 ovl = ovid->overlays[0];
1132 dssdev = ovl->get_device(ovl);
1133
1134 /* get the display device attached to the overlay */
1135 if (!dssdev) {
1136 ret = -EINVAL;
1137 goto s_fmt_vid_out_exit;
1138 }
1139 timing = &dssdev->panel.timings;
1140
1141 /* We dont support RGB24-packed mode if vrfb rotation
1142 * is enabled*/
1143 if ((is_rotation_enabled(vout)) &&
1144 f->fmt.pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1145 ret = -EINVAL;
1146 goto s_fmt_vid_out_exit;
1147 }
1148
1149 /* get the framebuffer parameters */
1150
1151 if (is_rotation_90_or_270(vout)) {
1152 vout->fbuf.fmt.height = timing->x_res;
1153 vout->fbuf.fmt.width = timing->y_res;
1154 } else {
1155 vout->fbuf.fmt.height = timing->y_res;
1156 vout->fbuf.fmt.width = timing->x_res;
1157 }
1158
1159 /* change to samller size is OK */
1160
1161 bpp = omap_vout_try_format(&f->fmt.pix);
1162 f->fmt.pix.sizeimage = f->fmt.pix.width * f->fmt.pix.height * bpp;
1163
1164 /* try & set the new output format */
1165 vout->bpp = bpp;
1166 vout->pix = f->fmt.pix;
1167 vout->vrfb_bpp = 1;
1168
1169 /* If YUYV then vrfb bpp is 2, for others its 1 */
1170 if (V4L2_PIX_FMT_YUYV == vout->pix.pixelformat ||
1171 V4L2_PIX_FMT_UYVY == vout->pix.pixelformat)
1172 vout->vrfb_bpp = 2;
1173
1174 /* set default crop and win */
1175 omap_vout_new_format(&vout->pix, &vout->fbuf, &vout->crop, &vout->win);
1176
1177 ret = 0;
1178
1179 s_fmt_vid_out_exit:
1180 mutex_unlock(&vout->lock);
1181 return ret;
1182 }
1183
1184 static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh,
1185 struct v4l2_format *f)
1186 {
1187 int ret = 0;
1188 struct omap_vout_device *vout = fh;
1189 struct omap_overlay *ovl;
1190 struct omapvideo_info *ovid;
1191 struct v4l2_window *win = &f->fmt.win;
1192
1193 ovid = &vout->vid_info;
1194 ovl = ovid->overlays[0];
1195
1196 ret = omap_vout_try_window(&vout->fbuf, win);
1197
1198 if (!ret) {
1199 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1200 win->global_alpha = 255;
1201 else
1202 win->global_alpha = f->fmt.win.global_alpha;
1203 }
1204
1205 return ret;
1206 }
1207
1208 static int vidioc_s_fmt_vid_overlay(struct file *file, void *fh,
1209 struct v4l2_format *f)
1210 {
1211 int ret = 0;
1212 struct omap_overlay *ovl;
1213 struct omapvideo_info *ovid;
1214 struct omap_vout_device *vout = fh;
1215 struct v4l2_window *win = &f->fmt.win;
1216
1217 mutex_lock(&vout->lock);
1218 ovid = &vout->vid_info;
1219 ovl = ovid->overlays[0];
1220
1221 ret = omap_vout_new_window(&vout->crop, &vout->win, &vout->fbuf, win);
1222 if (!ret) {
1223 /* Video1 plane does not support global alpha on OMAP3 */
1224 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1225 vout->win.global_alpha = 255;
1226 else
1227 vout->win.global_alpha = f->fmt.win.global_alpha;
1228
1229 vout->win.chromakey = f->fmt.win.chromakey;
1230 }
1231 mutex_unlock(&vout->lock);
1232 return ret;
1233 }
1234
1235 static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh,
1236 struct v4l2_format *f)
1237 {
1238 u32 key_value = 0;
1239 struct omap_overlay *ovl;
1240 struct omapvideo_info *ovid;
1241 struct omap_vout_device *vout = fh;
1242 struct omap_overlay_manager_info info;
1243 struct v4l2_window *win = &f->fmt.win;
1244
1245 ovid = &vout->vid_info;
1246 ovl = ovid->overlays[0];
1247
1248 win->w = vout->win.w;
1249 win->field = vout->win.field;
1250 win->global_alpha = vout->win.global_alpha;
1251
1252 if (ovl->manager && ovl->manager->get_manager_info) {
1253 ovl->manager->get_manager_info(ovl->manager, &info);
1254 key_value = info.trans_key;
1255 }
1256 win->chromakey = key_value;
1257 return 0;
1258 }
1259
1260 static int vidioc_cropcap(struct file *file, void *fh,
1261 struct v4l2_cropcap *cropcap)
1262 {
1263 struct omap_vout_device *vout = fh;
1264 struct v4l2_pix_format *pix = &vout->pix;
1265
1266 if (cropcap->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1267 return -EINVAL;
1268
1269 /* Width and height are always even */
1270 cropcap->bounds.width = pix->width & ~1;
1271 cropcap->bounds.height = pix->height & ~1;
1272
1273 omap_vout_default_crop(&vout->pix, &vout->fbuf, &cropcap->defrect);
1274 cropcap->pixelaspect.numerator = 1;
1275 cropcap->pixelaspect.denominator = 1;
1276 return 0;
1277 }
1278
1279 static int vidioc_g_crop(struct file *file, void *fh, struct v4l2_crop *crop)
1280 {
1281 struct omap_vout_device *vout = fh;
1282
1283 if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1284 return -EINVAL;
1285 crop->c = vout->crop;
1286 return 0;
1287 }
1288
1289 static int vidioc_s_crop(struct file *file, void *fh, const struct v4l2_crop *crop)
1290 {
1291 int ret = -EINVAL;
1292 struct omap_vout_device *vout = fh;
1293 struct omapvideo_info *ovid;
1294 struct omap_overlay *ovl;
1295 struct omap_video_timings *timing;
1296 struct omap_dss_device *dssdev;
1297
1298 if (vout->streaming)
1299 return -EBUSY;
1300
1301 mutex_lock(&vout->lock);
1302 ovid = &vout->vid_info;
1303 ovl = ovid->overlays[0];
1304 /* get the display device attached to the overlay */
1305 dssdev = ovl->get_device(ovl);
1306
1307 if (!dssdev) {
1308 ret = -EINVAL;
1309 goto s_crop_err;
1310 }
1311
1312 timing = &dssdev->panel.timings;
1313
1314 if (is_rotation_90_or_270(vout)) {
1315 vout->fbuf.fmt.height = timing->x_res;
1316 vout->fbuf.fmt.width = timing->y_res;
1317 } else {
1318 vout->fbuf.fmt.height = timing->y_res;
1319 vout->fbuf.fmt.width = timing->x_res;
1320 }
1321
1322 if (crop->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1323 ret = omap_vout_new_crop(&vout->pix, &vout->crop, &vout->win,
1324 &vout->fbuf, &crop->c);
1325
1326 s_crop_err:
1327 mutex_unlock(&vout->lock);
1328 return ret;
1329 }
1330
1331 static int vidioc_queryctrl(struct file *file, void *fh,
1332 struct v4l2_queryctrl *ctrl)
1333 {
1334 int ret = 0;
1335
1336 switch (ctrl->id) {
1337 case V4L2_CID_ROTATE:
1338 ret = v4l2_ctrl_query_fill(ctrl, 0, 270, 90, 0);
1339 break;
1340 case V4L2_CID_BG_COLOR:
1341 ret = v4l2_ctrl_query_fill(ctrl, 0, 0xFFFFFF, 1, 0);
1342 break;
1343 case V4L2_CID_VFLIP:
1344 ret = v4l2_ctrl_query_fill(ctrl, 0, 1, 1, 0);
1345 break;
1346 default:
1347 ctrl->name[0] = '\0';
1348 ret = -EINVAL;
1349 }
1350 return ret;
1351 }
1352
1353 static int vidioc_g_ctrl(struct file *file, void *fh, struct v4l2_control *ctrl)
1354 {
1355 int ret = 0;
1356 struct omap_vout_device *vout = fh;
1357
1358 switch (ctrl->id) {
1359 case V4L2_CID_ROTATE:
1360 ctrl->value = vout->control[0].value;
1361 break;
1362 case V4L2_CID_BG_COLOR:
1363 {
1364 struct omap_overlay_manager_info info;
1365 struct omap_overlay *ovl;
1366
1367 ovl = vout->vid_info.overlays[0];
1368 if (!ovl->manager || !ovl->manager->get_manager_info) {
1369 ret = -EINVAL;
1370 break;
1371 }
1372
1373 ovl->manager->get_manager_info(ovl->manager, &info);
1374 ctrl->value = info.default_color;
1375 break;
1376 }
1377 case V4L2_CID_VFLIP:
1378 ctrl->value = vout->control[2].value;
1379 break;
1380 default:
1381 ret = -EINVAL;
1382 }
1383 return ret;
1384 }
1385
1386 static int vidioc_s_ctrl(struct file *file, void *fh, struct v4l2_control *a)
1387 {
1388 int ret = 0;
1389 struct omap_vout_device *vout = fh;
1390
1391 switch (a->id) {
1392 case V4L2_CID_ROTATE:
1393 {
1394 struct omapvideo_info *ovid;
1395 int rotation = a->value;
1396
1397 ovid = &vout->vid_info;
1398
1399 mutex_lock(&vout->lock);
1400 if (rotation && ovid->rotation_type == VOUT_ROT_NONE) {
1401 mutex_unlock(&vout->lock);
1402 ret = -ERANGE;
1403 break;
1404 }
1405
1406 if (rotation && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1407 mutex_unlock(&vout->lock);
1408 ret = -EINVAL;
1409 break;
1410 }
1411
1412 if (v4l2_rot_to_dss_rot(rotation, &vout->rotation,
1413 vout->mirror)) {
1414 mutex_unlock(&vout->lock);
1415 ret = -EINVAL;
1416 break;
1417 }
1418
1419 vout->control[0].value = rotation;
1420 mutex_unlock(&vout->lock);
1421 break;
1422 }
1423 case V4L2_CID_BG_COLOR:
1424 {
1425 struct omap_overlay *ovl;
1426 unsigned int color = a->value;
1427 struct omap_overlay_manager_info info;
1428
1429 ovl = vout->vid_info.overlays[0];
1430
1431 mutex_lock(&vout->lock);
1432 if (!ovl->manager || !ovl->manager->get_manager_info) {
1433 mutex_unlock(&vout->lock);
1434 ret = -EINVAL;
1435 break;
1436 }
1437
1438 ovl->manager->get_manager_info(ovl->manager, &info);
1439 info.default_color = color;
1440 if (ovl->manager->set_manager_info(ovl->manager, &info)) {
1441 mutex_unlock(&vout->lock);
1442 ret = -EINVAL;
1443 break;
1444 }
1445
1446 vout->control[1].value = color;
1447 mutex_unlock(&vout->lock);
1448 break;
1449 }
1450 case V4L2_CID_VFLIP:
1451 {
1452 struct omapvideo_info *ovid;
1453 unsigned int mirror = a->value;
1454
1455 ovid = &vout->vid_info;
1456
1457 mutex_lock(&vout->lock);
1458 if (mirror && ovid->rotation_type == VOUT_ROT_NONE) {
1459 mutex_unlock(&vout->lock);
1460 ret = -ERANGE;
1461 break;
1462 }
1463
1464 if (mirror && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1465 mutex_unlock(&vout->lock);
1466 ret = -EINVAL;
1467 break;
1468 }
1469 vout->mirror = mirror;
1470 vout->control[2].value = mirror;
1471 mutex_unlock(&vout->lock);
1472 break;
1473 }
1474 default:
1475 ret = -EINVAL;
1476 }
1477 return ret;
1478 }
1479
1480 static int vidioc_reqbufs(struct file *file, void *fh,
1481 struct v4l2_requestbuffers *req)
1482 {
1483 int ret = 0;
1484 unsigned int i, num_buffers = 0;
1485 struct omap_vout_device *vout = fh;
1486 struct videobuf_queue *q = &vout->vbq;
1487
1488 if (req->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1489 return -EINVAL;
1490 /* if memory is not mmp or userptr
1491 return error */
1492 if ((V4L2_MEMORY_MMAP != req->memory) &&
1493 (V4L2_MEMORY_USERPTR != req->memory))
1494 return -EINVAL;
1495
1496 mutex_lock(&vout->lock);
1497 /* Cannot be requested when streaming is on */
1498 if (vout->streaming) {
1499 ret = -EBUSY;
1500 goto reqbuf_err;
1501 }
1502
1503 /* If buffers are already allocated free them */
1504 if (q->bufs[0] && (V4L2_MEMORY_MMAP == q->bufs[0]->memory)) {
1505 if (vout->mmap_count) {
1506 ret = -EBUSY;
1507 goto reqbuf_err;
1508 }
1509 num_buffers = (vout->vid == OMAP_VIDEO1) ?
1510 video1_numbuffers : video2_numbuffers;
1511 for (i = num_buffers; i < vout->buffer_allocated; i++) {
1512 omap_vout_free_buffer(vout->buf_virt_addr[i],
1513 vout->buffer_size);
1514 vout->buf_virt_addr[i] = 0;
1515 vout->buf_phy_addr[i] = 0;
1516 }
1517 vout->buffer_allocated = num_buffers;
1518 videobuf_mmap_free(q);
1519 } else if (q->bufs[0] && (V4L2_MEMORY_USERPTR == q->bufs[0]->memory)) {
1520 if (vout->buffer_allocated) {
1521 videobuf_mmap_free(q);
1522 for (i = 0; i < vout->buffer_allocated; i++) {
1523 kfree(q->bufs[i]);
1524 q->bufs[i] = NULL;
1525 }
1526 vout->buffer_allocated = 0;
1527 }
1528 }
1529
1530 /*store the memory type in data structure */
1531 vout->memory = req->memory;
1532
1533 INIT_LIST_HEAD(&vout->dma_queue);
1534
1535 /* call videobuf_reqbufs api */
1536 ret = videobuf_reqbufs(q, req);
1537 if (ret < 0)
1538 goto reqbuf_err;
1539
1540 vout->buffer_allocated = req->count;
1541
1542 reqbuf_err:
1543 mutex_unlock(&vout->lock);
1544 return ret;
1545 }
1546
1547 static int vidioc_querybuf(struct file *file, void *fh,
1548 struct v4l2_buffer *b)
1549 {
1550 struct omap_vout_device *vout = fh;
1551
1552 return videobuf_querybuf(&vout->vbq, b);
1553 }
1554
1555 static int vidioc_qbuf(struct file *file, void *fh,
1556 struct v4l2_buffer *buffer)
1557 {
1558 struct omap_vout_device *vout = fh;
1559 struct videobuf_queue *q = &vout->vbq;
1560
1561 if ((V4L2_BUF_TYPE_VIDEO_OUTPUT != buffer->type) ||
1562 (buffer->index >= vout->buffer_allocated) ||
1563 (q->bufs[buffer->index]->memory != buffer->memory)) {
1564 return -EINVAL;
1565 }
1566 if (V4L2_MEMORY_USERPTR == buffer->memory) {
1567 if ((buffer->length < vout->pix.sizeimage) ||
1568 (0 == buffer->m.userptr)) {
1569 return -EINVAL;
1570 }
1571 }
1572
1573 if ((is_rotation_enabled(vout)) &&
1574 vout->vrfb_dma_tx.req_status == DMA_CHAN_NOT_ALLOTED) {
1575 v4l2_warn(&vout->vid_dev->v4l2_dev,
1576 "DMA Channel not allocated for Rotation\n");
1577 return -EINVAL;
1578 }
1579
1580 return videobuf_qbuf(q, buffer);
1581 }
1582
1583 static int vidioc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *b)
1584 {
1585 struct omap_vout_device *vout = fh;
1586 struct videobuf_queue *q = &vout->vbq;
1587
1588 int ret;
1589 u32 addr;
1590 unsigned long size;
1591 struct videobuf_buffer *vb;
1592
1593 vb = q->bufs[b->index];
1594
1595 if (!vout->streaming)
1596 return -EINVAL;
1597
1598 if (file->f_flags & O_NONBLOCK)
1599 /* Call videobuf_dqbuf for non blocking mode */
1600 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 1);
1601 else
1602 /* Call videobuf_dqbuf for blocking mode */
1603 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 0);
1604
1605 addr = (unsigned long) vout->buf_phy_addr[vb->i];
1606 size = (unsigned long) vb->size;
1607 dma_unmap_single(vout->vid_dev->v4l2_dev.dev, addr,
1608 size, DMA_TO_DEVICE);
1609 return ret;
1610 }
1611
1612 static int vidioc_streamon(struct file *file, void *fh, enum v4l2_buf_type i)
1613 {
1614 int ret = 0, j;
1615 u32 addr = 0, mask = 0;
1616 struct omap_vout_device *vout = fh;
1617 struct videobuf_queue *q = &vout->vbq;
1618 struct omapvideo_info *ovid = &vout->vid_info;
1619
1620 mutex_lock(&vout->lock);
1621
1622 if (vout->streaming) {
1623 ret = -EBUSY;
1624 goto streamon_err;
1625 }
1626
1627 ret = videobuf_streamon(q);
1628 if (ret)
1629 goto streamon_err;
1630
1631 if (list_empty(&vout->dma_queue)) {
1632 ret = -EIO;
1633 goto streamon_err1;
1634 }
1635
1636 /* Get the next frame from the buffer queue */
1637 vout->next_frm = vout->cur_frm = list_entry(vout->dma_queue.next,
1638 struct videobuf_buffer, queue);
1639 /* Remove buffer from the buffer queue */
1640 list_del(&vout->cur_frm->queue);
1641 /* Mark state of the current frame to active */
1642 vout->cur_frm->state = VIDEOBUF_ACTIVE;
1643 /* Initialize field_id and started member */
1644 vout->field_id = 0;
1645
1646 /* set flag here. Next QBUF will start DMA */
1647 vout->streaming = true;
1648
1649 vout->first_int = 1;
1650
1651 if (omap_vout_calculate_offset(vout)) {
1652 ret = -EINVAL;
1653 goto streamon_err1;
1654 }
1655 addr = (unsigned long) vout->queued_buf_addr[vout->cur_frm->i]
1656 + vout->cropped_offset;
1657
1658 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1659 | DISPC_IRQ_VSYNC2;
1660
1661 /* First save the configuration in ovelray structure */
1662 ret = omapvid_init(vout, addr);
1663 if (ret) {
1664 v4l2_err(&vout->vid_dev->v4l2_dev,
1665 "failed to set overlay info\n");
1666 goto streamon_err1;
1667 }
1668
1669 omap_dispc_register_isr(omap_vout_isr, vout, mask);
1670
1671 /* Enable the pipeline and set the Go bit */
1672 ret = omapvid_apply_changes(vout);
1673 if (ret)
1674 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1675
1676 for (j = 0; j < ovid->num_overlays; j++) {
1677 struct omap_overlay *ovl = ovid->overlays[j];
1678 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1679
1680 if (dssdev) {
1681 ret = ovl->enable(ovl);
1682 if (ret)
1683 goto streamon_err1;
1684 }
1685 }
1686
1687 ret = 0;
1688
1689 streamon_err1:
1690 if (ret)
1691 ret = videobuf_streamoff(q);
1692 streamon_err:
1693 mutex_unlock(&vout->lock);
1694 return ret;
1695 }
1696
1697 static int vidioc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i)
1698 {
1699 u32 mask = 0;
1700 int ret = 0, j;
1701 struct omap_vout_device *vout = fh;
1702 struct omapvideo_info *ovid = &vout->vid_info;
1703
1704 if (!vout->streaming)
1705 return -EINVAL;
1706
1707 vout->streaming = false;
1708 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1709 | DISPC_IRQ_VSYNC2;
1710
1711 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
1712
1713 for (j = 0; j < ovid->num_overlays; j++) {
1714 struct omap_overlay *ovl = ovid->overlays[j];
1715 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1716
1717 if (dssdev)
1718 ovl->disable(ovl);
1719 }
1720
1721 /* Turn of the pipeline */
1722 ret = omapvid_apply_changes(vout);
1723 if (ret)
1724 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode in"
1725 " streamoff\n");
1726
1727 INIT_LIST_HEAD(&vout->dma_queue);
1728 ret = videobuf_streamoff(&vout->vbq);
1729
1730 return ret;
1731 }
1732
1733 static int vidioc_s_fbuf(struct file *file, void *fh,
1734 const struct v4l2_framebuffer *a)
1735 {
1736 int enable = 0;
1737 struct omap_overlay *ovl;
1738 struct omapvideo_info *ovid;
1739 struct omap_vout_device *vout = fh;
1740 struct omap_overlay_manager_info info;
1741 enum omap_dss_trans_key_type key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1742
1743 ovid = &vout->vid_info;
1744 ovl = ovid->overlays[0];
1745
1746 /* OMAP DSS doesn't support Source and Destination color
1747 key together */
1748 if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY) &&
1749 (a->flags & V4L2_FBUF_FLAG_CHROMAKEY))
1750 return -EINVAL;
1751 /* OMAP DSS Doesn't support the Destination color key
1752 and alpha blending together */
1753 if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY) &&
1754 (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA))
1755 return -EINVAL;
1756
1757 if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY)) {
1758 vout->fbuf.flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1759 key_type = OMAP_DSS_COLOR_KEY_VID_SRC;
1760 } else
1761 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1762
1763 if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY)) {
1764 vout->fbuf.flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1765 key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1766 } else
1767 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_CHROMAKEY;
1768
1769 if (a->flags & (V4L2_FBUF_FLAG_CHROMAKEY |
1770 V4L2_FBUF_FLAG_SRC_CHROMAKEY))
1771 enable = 1;
1772 else
1773 enable = 0;
1774 if (ovl->manager && ovl->manager->get_manager_info &&
1775 ovl->manager->set_manager_info) {
1776
1777 ovl->manager->get_manager_info(ovl->manager, &info);
1778 info.trans_enabled = enable;
1779 info.trans_key_type = key_type;
1780 info.trans_key = vout->win.chromakey;
1781
1782 if (ovl->manager->set_manager_info(ovl->manager, &info))
1783 return -EINVAL;
1784 }
1785 if (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA) {
1786 vout->fbuf.flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1787 enable = 1;
1788 } else {
1789 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_LOCAL_ALPHA;
1790 enable = 0;
1791 }
1792 if (ovl->manager && ovl->manager->get_manager_info &&
1793 ovl->manager->set_manager_info) {
1794 ovl->manager->get_manager_info(ovl->manager, &info);
1795 /* enable this only if there is no zorder cap */
1796 if ((ovl->caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
1797 info.partial_alpha_enabled = enable;
1798 if (ovl->manager->set_manager_info(ovl->manager, &info))
1799 return -EINVAL;
1800 }
1801
1802 return 0;
1803 }
1804
1805 static int vidioc_g_fbuf(struct file *file, void *fh,
1806 struct v4l2_framebuffer *a)
1807 {
1808 struct omap_overlay *ovl;
1809 struct omapvideo_info *ovid;
1810 struct omap_vout_device *vout = fh;
1811 struct omap_overlay_manager_info info;
1812
1813 ovid = &vout->vid_info;
1814 ovl = ovid->overlays[0];
1815
1816 /* The video overlay must stay within the framebuffer and can't be
1817 positioned independently. */
1818 a->flags = V4L2_FBUF_FLAG_OVERLAY;
1819 a->capability = V4L2_FBUF_CAP_LOCAL_ALPHA | V4L2_FBUF_CAP_CHROMAKEY
1820 | V4L2_FBUF_CAP_SRC_CHROMAKEY;
1821
1822 if (ovl->manager && ovl->manager->get_manager_info) {
1823 ovl->manager->get_manager_info(ovl->manager, &info);
1824 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_VID_SRC)
1825 a->flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1826 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_GFX_DST)
1827 a->flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1828 }
1829 if (ovl->manager && ovl->manager->get_manager_info) {
1830 ovl->manager->get_manager_info(ovl->manager, &info);
1831 if (info.partial_alpha_enabled)
1832 a->flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1833 }
1834
1835 return 0;
1836 }
1837
1838 static const struct v4l2_ioctl_ops vout_ioctl_ops = {
1839 .vidioc_querycap = vidioc_querycap,
1840 .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out,
1841 .vidioc_g_fmt_vid_out = vidioc_g_fmt_vid_out,
1842 .vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out,
1843 .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out,
1844 .vidioc_queryctrl = vidioc_queryctrl,
1845 .vidioc_g_ctrl = vidioc_g_ctrl,
1846 .vidioc_s_fbuf = vidioc_s_fbuf,
1847 .vidioc_g_fbuf = vidioc_g_fbuf,
1848 .vidioc_s_ctrl = vidioc_s_ctrl,
1849 .vidioc_try_fmt_vid_out_overlay = vidioc_try_fmt_vid_overlay,
1850 .vidioc_s_fmt_vid_out_overlay = vidioc_s_fmt_vid_overlay,
1851 .vidioc_g_fmt_vid_out_overlay = vidioc_g_fmt_vid_overlay,
1852 .vidioc_cropcap = vidioc_cropcap,
1853 .vidioc_g_crop = vidioc_g_crop,
1854 .vidioc_s_crop = vidioc_s_crop,
1855 .vidioc_reqbufs = vidioc_reqbufs,
1856 .vidioc_querybuf = vidioc_querybuf,
1857 .vidioc_qbuf = vidioc_qbuf,
1858 .vidioc_dqbuf = vidioc_dqbuf,
1859 .vidioc_streamon = vidioc_streamon,
1860 .vidioc_streamoff = vidioc_streamoff,
1861 };
1862
1863 static const struct v4l2_file_operations omap_vout_fops = {
1864 .owner = THIS_MODULE,
1865 .poll = omap_vout_poll,
1866 .unlocked_ioctl = video_ioctl2,
1867 .mmap = omap_vout_mmap,
1868 .open = omap_vout_open,
1869 .release = omap_vout_release,
1870 };
1871
1872 /* Init functions used during driver initialization */
1873 /* Initial setup of video_data */
1874 static int __init omap_vout_setup_video_data(struct omap_vout_device *vout)
1875 {
1876 struct video_device *vfd;
1877 struct v4l2_pix_format *pix;
1878 struct v4l2_control *control;
1879 struct omap_overlay *ovl = vout->vid_info.overlays[0];
1880 struct omap_dss_device *display = ovl->get_device(ovl);
1881
1882 /* set the default pix */
1883 pix = &vout->pix;
1884
1885 /* Set the default picture of QVGA */
1886 pix->width = QQVGA_WIDTH;
1887 pix->height = QQVGA_HEIGHT;
1888
1889 /* Default pixel format is RGB 5-6-5 */
1890 pix->pixelformat = V4L2_PIX_FMT_RGB565;
1891 pix->field = V4L2_FIELD_ANY;
1892 pix->bytesperline = pix->width * 2;
1893 pix->sizeimage = pix->bytesperline * pix->height;
1894 pix->colorspace = V4L2_COLORSPACE_JPEG;
1895
1896 vout->bpp = RGB565_BPP;
1897 vout->fbuf.fmt.width = display->panel.timings.x_res;
1898 vout->fbuf.fmt.height = display->panel.timings.y_res;
1899
1900 /* Set the data structures for the overlay parameters*/
1901 vout->win.global_alpha = 255;
1902 vout->fbuf.flags = 0;
1903 vout->fbuf.capability = V4L2_FBUF_CAP_LOCAL_ALPHA |
1904 V4L2_FBUF_CAP_SRC_CHROMAKEY | V4L2_FBUF_CAP_CHROMAKEY;
1905 vout->win.chromakey = 0;
1906
1907 omap_vout_new_format(pix, &vout->fbuf, &vout->crop, &vout->win);
1908
1909 /*Initialize the control variables for
1910 rotation, flipping and background color. */
1911 control = vout->control;
1912 control[0].id = V4L2_CID_ROTATE;
1913 control[0].value = 0;
1914 vout->rotation = 0;
1915 vout->mirror = false;
1916 vout->control[2].id = V4L2_CID_HFLIP;
1917 vout->control[2].value = 0;
1918 if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
1919 vout->vrfb_bpp = 2;
1920
1921 control[1].id = V4L2_CID_BG_COLOR;
1922 control[1].value = 0;
1923
1924 /* initialize the video_device struct */
1925 vfd = vout->vfd = video_device_alloc();
1926
1927 if (!vfd) {
1928 printk(KERN_ERR VOUT_NAME ": could not allocate"
1929 " video device struct\n");
1930 return -ENOMEM;
1931 }
1932 vfd->release = video_device_release;
1933 vfd->ioctl_ops = &vout_ioctl_ops;
1934
1935 strlcpy(vfd->name, VOUT_NAME, sizeof(vfd->name));
1936
1937 vfd->fops = &omap_vout_fops;
1938 vfd->v4l2_dev = &vout->vid_dev->v4l2_dev;
1939 vfd->vfl_dir = VFL_DIR_TX;
1940 mutex_init(&vout->lock);
1941
1942 vfd->minor = -1;
1943 return 0;
1944
1945 }
1946
1947 /* Setup video buffers */
1948 static int __init omap_vout_setup_video_bufs(struct platform_device *pdev,
1949 int vid_num)
1950 {
1951 u32 numbuffers;
1952 int ret = 0, i;
1953 struct omapvideo_info *ovid;
1954 struct omap_vout_device *vout;
1955 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1956 struct omap2video_device *vid_dev =
1957 container_of(v4l2_dev, struct omap2video_device, v4l2_dev);
1958
1959 vout = vid_dev->vouts[vid_num];
1960 ovid = &vout->vid_info;
1961
1962 numbuffers = (vid_num == 0) ? video1_numbuffers : video2_numbuffers;
1963 vout->buffer_size = (vid_num == 0) ? video1_bufsize : video2_bufsize;
1964 dev_info(&pdev->dev, "Buffer Size = %d\n", vout->buffer_size);
1965
1966 for (i = 0; i < numbuffers; i++) {
1967 vout->buf_virt_addr[i] =
1968 omap_vout_alloc_buffer(vout->buffer_size,
1969 (u32 *) &vout->buf_phy_addr[i]);
1970 if (!vout->buf_virt_addr[i]) {
1971 numbuffers = i;
1972 ret = -ENOMEM;
1973 goto free_buffers;
1974 }
1975 }
1976
1977 vout->cropped_offset = 0;
1978
1979 if (ovid->rotation_type == VOUT_ROT_VRFB) {
1980 int static_vrfb_allocation = (vid_num == 0) ?
1981 vid1_static_vrfb_alloc : vid2_static_vrfb_alloc;
1982 ret = omap_vout_setup_vrfb_bufs(pdev, vid_num,
1983 static_vrfb_allocation);
1984 }
1985
1986 return ret;
1987
1988 free_buffers:
1989 for (i = 0; i < numbuffers; i++) {
1990 omap_vout_free_buffer(vout->buf_virt_addr[i],
1991 vout->buffer_size);
1992 vout->buf_virt_addr[i] = 0;
1993 vout->buf_phy_addr[i] = 0;
1994 }
1995 return ret;
1996
1997 }
1998
1999 /* Create video out devices */
2000 static int __init omap_vout_create_video_devices(struct platform_device *pdev)
2001 {
2002 int ret = 0, k;
2003 struct omap_vout_device *vout;
2004 struct video_device *vfd = NULL;
2005 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2006 struct omap2video_device *vid_dev = container_of(v4l2_dev,
2007 struct omap2video_device, v4l2_dev);
2008
2009 for (k = 0; k < pdev->num_resources; k++) {
2010
2011 vout = kzalloc(sizeof(struct omap_vout_device), GFP_KERNEL);
2012 if (!vout) {
2013 dev_err(&pdev->dev, ": could not allocate memory\n");
2014 return -ENOMEM;
2015 }
2016
2017 vout->vid = k;
2018 vid_dev->vouts[k] = vout;
2019 vout->vid_dev = vid_dev;
2020 /* Select video2 if only 1 overlay is controlled by V4L2 */
2021 if (pdev->num_resources == 1)
2022 vout->vid_info.overlays[0] = vid_dev->overlays[k + 2];
2023 else
2024 /* Else select video1 and video2 one by one. */
2025 vout->vid_info.overlays[0] = vid_dev->overlays[k + 1];
2026 vout->vid_info.num_overlays = 1;
2027 vout->vid_info.id = k + 1;
2028
2029 /* Set VRFB as rotation_type for omap2 and omap3 */
2030 if (omap_vout_dss_omap24xx() || omap_vout_dss_omap34xx())
2031 vout->vid_info.rotation_type = VOUT_ROT_VRFB;
2032
2033 /* Setup the default configuration for the video devices
2034 */
2035 if (omap_vout_setup_video_data(vout) != 0) {
2036 ret = -ENOMEM;
2037 goto error;
2038 }
2039
2040 /* Allocate default number of buffers for the video streaming
2041 * and reserve the VRFB space for rotation
2042 */
2043 if (omap_vout_setup_video_bufs(pdev, k) != 0) {
2044 ret = -ENOMEM;
2045 goto error1;
2046 }
2047
2048 /* Register the Video device with V4L2
2049 */
2050 vfd = vout->vfd;
2051 if (video_register_device(vfd, VFL_TYPE_GRABBER, -1) < 0) {
2052 dev_err(&pdev->dev, ": Could not register "
2053 "Video for Linux device\n");
2054 vfd->minor = -1;
2055 ret = -ENODEV;
2056 goto error2;
2057 }
2058 video_set_drvdata(vfd, vout);
2059
2060 dev_info(&pdev->dev, ": registered and initialized"
2061 " video device %d\n", vfd->minor);
2062 if (k == (pdev->num_resources - 1))
2063 return 0;
2064
2065 continue;
2066 error2:
2067 if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
2068 omap_vout_release_vrfb(vout);
2069 omap_vout_free_buffers(vout);
2070 error1:
2071 video_device_release(vfd);
2072 error:
2073 kfree(vout);
2074 return ret;
2075 }
2076
2077 return -ENODEV;
2078 }
2079 /* Driver functions */
2080 static void omap_vout_cleanup_device(struct omap_vout_device *vout)
2081 {
2082 struct video_device *vfd;
2083 struct omapvideo_info *ovid;
2084
2085 if (!vout)
2086 return;
2087
2088 vfd = vout->vfd;
2089 ovid = &vout->vid_info;
2090 if (vfd) {
2091 if (!video_is_registered(vfd)) {
2092 /*
2093 * The device was never registered, so release the
2094 * video_device struct directly.
2095 */
2096 video_device_release(vfd);
2097 } else {
2098 /*
2099 * The unregister function will release the video_device
2100 * struct as well as unregistering it.
2101 */
2102 video_unregister_device(vfd);
2103 }
2104 }
2105 if (ovid->rotation_type == VOUT_ROT_VRFB) {
2106 omap_vout_release_vrfb(vout);
2107 /* Free the VRFB buffer if allocated
2108 * init time
2109 */
2110 if (vout->vrfb_static_allocation)
2111 omap_vout_free_vrfb_buffers(vout);
2112 }
2113 omap_vout_free_buffers(vout);
2114
2115 kfree(vout);
2116 }
2117
2118 static int omap_vout_remove(struct platform_device *pdev)
2119 {
2120 int k;
2121 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2122 struct omap2video_device *vid_dev = container_of(v4l2_dev, struct
2123 omap2video_device, v4l2_dev);
2124
2125 v4l2_device_unregister(v4l2_dev);
2126 for (k = 0; k < pdev->num_resources; k++)
2127 omap_vout_cleanup_device(vid_dev->vouts[k]);
2128
2129 for (k = 0; k < vid_dev->num_displays; k++) {
2130 if (vid_dev->displays[k]->state != OMAP_DSS_DISPLAY_DISABLED)
2131 vid_dev->displays[k]->driver->disable(vid_dev->displays[k]);
2132
2133 omap_dss_put_device(vid_dev->displays[k]);
2134 }
2135 kfree(vid_dev);
2136 return 0;
2137 }
2138
2139 static int __init omap_vout_probe(struct platform_device *pdev)
2140 {
2141 int ret = 0, i;
2142 struct omap_overlay *ovl;
2143 struct omap_dss_device *dssdev = NULL;
2144 struct omap_dss_device *def_display;
2145 struct omap2video_device *vid_dev = NULL;
2146
2147 if (omapdss_is_initialized() == false)
2148 return -EPROBE_DEFER;
2149
2150 ret = omapdss_compat_init();
2151 if (ret) {
2152 dev_err(&pdev->dev, "failed to init dss\n");
2153 return ret;
2154 }
2155
2156 if (pdev->num_resources == 0) {
2157 dev_err(&pdev->dev, "probed for an unknown device\n");
2158 ret = -ENODEV;
2159 goto err_dss_init;
2160 }
2161
2162 vid_dev = kzalloc(sizeof(struct omap2video_device), GFP_KERNEL);
2163 if (vid_dev == NULL) {
2164 ret = -ENOMEM;
2165 goto err_dss_init;
2166 }
2167
2168 vid_dev->num_displays = 0;
2169 for_each_dss_dev(dssdev) {
2170 omap_dss_get_device(dssdev);
2171
2172 if (!dssdev->driver) {
2173 dev_warn(&pdev->dev, "no driver for display: %s\n",
2174 dssdev->name);
2175 omap_dss_put_device(dssdev);
2176 continue;
2177 }
2178
2179 vid_dev->displays[vid_dev->num_displays++] = dssdev;
2180 }
2181
2182 if (vid_dev->num_displays == 0) {
2183 dev_err(&pdev->dev, "no displays\n");
2184 ret = -EINVAL;
2185 goto probe_err0;
2186 }
2187
2188 vid_dev->num_overlays = omap_dss_get_num_overlays();
2189 for (i = 0; i < vid_dev->num_overlays; i++)
2190 vid_dev->overlays[i] = omap_dss_get_overlay(i);
2191
2192 vid_dev->num_managers = omap_dss_get_num_overlay_managers();
2193 for (i = 0; i < vid_dev->num_managers; i++)
2194 vid_dev->managers[i] = omap_dss_get_overlay_manager(i);
2195
2196 /* Get the Video1 overlay and video2 overlay.
2197 * Setup the Display attached to that overlays
2198 */
2199 for (i = 1; i < vid_dev->num_overlays; i++) {
2200 ovl = omap_dss_get_overlay(i);
2201 dssdev = ovl->get_device(ovl);
2202
2203 if (dssdev) {
2204 def_display = dssdev;
2205 } else {
2206 dev_warn(&pdev->dev, "cannot find display\n");
2207 def_display = NULL;
2208 }
2209 if (def_display) {
2210 struct omap_dss_driver *dssdrv = def_display->driver;
2211
2212 ret = dssdrv->enable(def_display);
2213 if (ret) {
2214 /* Here we are not considering a error
2215 * as display may be enabled by frame
2216 * buffer driver
2217 */
2218 dev_warn(&pdev->dev,
2219 "'%s' Display already enabled\n",
2220 def_display->name);
2221 }
2222 }
2223 }
2224
2225 if (v4l2_device_register(&pdev->dev, &vid_dev->v4l2_dev) < 0) {
2226 dev_err(&pdev->dev, "v4l2_device_register failed\n");
2227 ret = -ENODEV;
2228 goto probe_err1;
2229 }
2230
2231 ret = omap_vout_create_video_devices(pdev);
2232 if (ret)
2233 goto probe_err2;
2234
2235 for (i = 0; i < vid_dev->num_displays; i++) {
2236 struct omap_dss_device *display = vid_dev->displays[i];
2237
2238 if (display->driver->update)
2239 display->driver->update(display, 0, 0,
2240 display->panel.timings.x_res,
2241 display->panel.timings.y_res);
2242 }
2243 return 0;
2244
2245 probe_err2:
2246 v4l2_device_unregister(&vid_dev->v4l2_dev);
2247 probe_err1:
2248 for (i = 1; i < vid_dev->num_overlays; i++) {
2249 def_display = NULL;
2250 ovl = omap_dss_get_overlay(i);
2251 dssdev = ovl->get_device(ovl);
2252
2253 if (dssdev)
2254 def_display = dssdev;
2255
2256 if (def_display && def_display->driver)
2257 def_display->driver->disable(def_display);
2258 }
2259 probe_err0:
2260 kfree(vid_dev);
2261 err_dss_init:
2262 omapdss_compat_uninit();
2263 return ret;
2264 }
2265
2266 static struct platform_driver omap_vout_driver = {
2267 .driver = {
2268 .name = VOUT_NAME,
2269 },
2270 .remove = omap_vout_remove,
2271 };
2272
2273 static int __init omap_vout_init(void)
2274 {
2275 if (platform_driver_probe(&omap_vout_driver, omap_vout_probe) != 0) {
2276 printk(KERN_ERR VOUT_NAME ":Could not register Video driver\n");
2277 return -EINVAL;
2278 }
2279 return 0;
2280 }
2281
2282 static void omap_vout_cleanup(void)
2283 {
2284 platform_driver_unregister(&omap_vout_driver);
2285 }
2286
2287 late_initcall(omap_vout_init);
2288 module_exit(omap_vout_cleanup);
Linux kernel - Deliverables
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