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Merge branch 'next' of git://git.infradead.org/users/pcmoore/selinux into next
[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, pixheight, 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 pixheight = vout->pix.width;
393 pixwidth = vout->pix.height;
394 } else {
395 cropheight = vout->crop.height;
396 cropwidth = vout->crop.width;
397 pixheight = vout->pix.height;
398 pixwidth = vout->pix.width;
399 }
400
401 ovl->get_overlay_info(ovl, &info);
402 info.paddr = addr;
403 info.width = cropwidth;
404 info.height = cropheight;
405 info.color_mode = vout->dss_mode;
406 info.mirror = vout->mirror;
407 info.pos_x = posx;
408 info.pos_y = posy;
409 info.out_width = outw;
410 info.out_height = outh;
411 info.global_alpha = vout->win.global_alpha;
412 if (!is_rotation_enabled(vout)) {
413 info.rotation = 0;
414 info.rotation_type = OMAP_DSS_ROT_DMA;
415 info.screen_width = pixwidth;
416 } else {
417 info.rotation = vout->rotation;
418 info.rotation_type = OMAP_DSS_ROT_VRFB;
419 info.screen_width = 2048;
420 }
421
422 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
423 "%s enable=%d addr=%x width=%d\n height=%d color_mode=%d\n"
424 "rotation=%d mirror=%d posx=%d posy=%d out_width = %d \n"
425 "out_height=%d rotation_type=%d screen_width=%d\n",
426 __func__, ovl->is_enabled(ovl), info.paddr, info.width, info.height,
427 info.color_mode, info.rotation, info.mirror, info.pos_x,
428 info.pos_y, info.out_width, info.out_height, info.rotation_type,
429 info.screen_width);
430
431 ret = ovl->set_overlay_info(ovl, &info);
432 if (ret)
433 goto setup_ovl_err;
434
435 return 0;
436
437 setup_ovl_err:
438 v4l2_warn(&vout->vid_dev->v4l2_dev, "setup_overlay failed\n");
439 return ret;
440 }
441
442 /*
443 * Initialize the overlay structure
444 */
445 static int omapvid_init(struct omap_vout_device *vout, u32 addr)
446 {
447 int ret = 0, i;
448 struct v4l2_window *win;
449 struct omap_overlay *ovl;
450 int posx, posy, outw, outh, temp;
451 struct omap_video_timings *timing;
452 struct omapvideo_info *ovid = &vout->vid_info;
453
454 win = &vout->win;
455 for (i = 0; i < ovid->num_overlays; i++) {
456 struct omap_dss_device *dssdev;
457
458 ovl = ovid->overlays[i];
459 dssdev = ovl->get_device(ovl);
460
461 if (!dssdev)
462 return -EINVAL;
463
464 timing = &dssdev->panel.timings;
465
466 outw = win->w.width;
467 outh = win->w.height;
468 switch (vout->rotation) {
469 case dss_rotation_90_degree:
470 /* Invert the height and width for 90
471 * and 270 degree rotation
472 */
473 temp = outw;
474 outw = outh;
475 outh = temp;
476 posy = (timing->y_res - win->w.width) - win->w.left;
477 posx = win->w.top;
478 break;
479
480 case dss_rotation_180_degree:
481 posx = (timing->x_res - win->w.width) - win->w.left;
482 posy = (timing->y_res - win->w.height) - win->w.top;
483 break;
484
485 case dss_rotation_270_degree:
486 temp = outw;
487 outw = outh;
488 outh = temp;
489 posy = win->w.left;
490 posx = (timing->x_res - win->w.height) - win->w.top;
491 break;
492
493 default:
494 posx = win->w.left;
495 posy = win->w.top;
496 break;
497 }
498
499 ret = omapvid_setup_overlay(vout, ovl, posx, posy,
500 outw, outh, addr);
501 if (ret)
502 goto omapvid_init_err;
503 }
504 return 0;
505
506 omapvid_init_err:
507 v4l2_warn(&vout->vid_dev->v4l2_dev, "apply_changes failed\n");
508 return ret;
509 }
510
511 /*
512 * Apply the changes set the go bit of DSS
513 */
514 static int omapvid_apply_changes(struct omap_vout_device *vout)
515 {
516 int i;
517 struct omap_overlay *ovl;
518 struct omapvideo_info *ovid = &vout->vid_info;
519
520 for (i = 0; i < ovid->num_overlays; i++) {
521 struct omap_dss_device *dssdev;
522
523 ovl = ovid->overlays[i];
524 dssdev = ovl->get_device(ovl);
525 if (!dssdev)
526 return -EINVAL;
527 ovl->manager->apply(ovl->manager);
528 }
529
530 return 0;
531 }
532
533 static int omapvid_handle_interlace_display(struct omap_vout_device *vout,
534 unsigned int irqstatus, struct timeval timevalue)
535 {
536 u32 fid;
537
538 if (vout->first_int) {
539 vout->first_int = 0;
540 goto err;
541 }
542
543 if (irqstatus & DISPC_IRQ_EVSYNC_ODD)
544 fid = 1;
545 else if (irqstatus & DISPC_IRQ_EVSYNC_EVEN)
546 fid = 0;
547 else
548 goto err;
549
550 vout->field_id ^= 1;
551 if (fid != vout->field_id) {
552 if (fid == 0)
553 vout->field_id = fid;
554 } else if (0 == fid) {
555 if (vout->cur_frm == vout->next_frm)
556 goto err;
557
558 vout->cur_frm->ts = timevalue;
559 vout->cur_frm->state = VIDEOBUF_DONE;
560 wake_up_interruptible(&vout->cur_frm->done);
561 vout->cur_frm = vout->next_frm;
562 } else {
563 if (list_empty(&vout->dma_queue) ||
564 (vout->cur_frm != vout->next_frm))
565 goto err;
566 }
567
568 return vout->field_id;
569 err:
570 return 0;
571 }
572
573 static void omap_vout_isr(void *arg, unsigned int irqstatus)
574 {
575 int ret, fid, mgr_id;
576 u32 addr, irq;
577 struct omap_overlay *ovl;
578 struct timeval timevalue;
579 struct omapvideo_info *ovid;
580 struct omap_dss_device *cur_display;
581 struct omap_vout_device *vout = (struct omap_vout_device *)arg;
582
583 if (!vout->streaming)
584 return;
585
586 ovid = &vout->vid_info;
587 ovl = ovid->overlays[0];
588
589 mgr_id = ovl->manager->id;
590
591 /* get the display device attached to the overlay */
592 cur_display = ovl->get_device(ovl);
593
594 if (!cur_display)
595 return;
596
597 spin_lock(&vout->vbq_lock);
598 v4l2_get_timestamp(&timevalue);
599
600 switch (cur_display->type) {
601 case OMAP_DISPLAY_TYPE_DSI:
602 case OMAP_DISPLAY_TYPE_DPI:
603 case OMAP_DISPLAY_TYPE_DVI:
604 if (mgr_id == OMAP_DSS_CHANNEL_LCD)
605 irq = DISPC_IRQ_VSYNC;
606 else if (mgr_id == OMAP_DSS_CHANNEL_LCD2)
607 irq = DISPC_IRQ_VSYNC2;
608 else
609 goto vout_isr_err;
610
611 if (!(irqstatus & irq))
612 goto vout_isr_err;
613 break;
614 case OMAP_DISPLAY_TYPE_VENC:
615 fid = omapvid_handle_interlace_display(vout, irqstatus,
616 timevalue);
617 if (!fid)
618 goto vout_isr_err;
619 break;
620 case OMAP_DISPLAY_TYPE_HDMI:
621 if (!(irqstatus & DISPC_IRQ_EVSYNC_EVEN))
622 goto vout_isr_err;
623 break;
624 default:
625 goto vout_isr_err;
626 }
627
628 if (!vout->first_int && (vout->cur_frm != vout->next_frm)) {
629 vout->cur_frm->ts = timevalue;
630 vout->cur_frm->state = VIDEOBUF_DONE;
631 wake_up_interruptible(&vout->cur_frm->done);
632 vout->cur_frm = vout->next_frm;
633 }
634
635 vout->first_int = 0;
636 if (list_empty(&vout->dma_queue))
637 goto vout_isr_err;
638
639 vout->next_frm = list_entry(vout->dma_queue.next,
640 struct videobuf_buffer, queue);
641 list_del(&vout->next_frm->queue);
642
643 vout->next_frm->state = VIDEOBUF_ACTIVE;
644
645 addr = (unsigned long) vout->queued_buf_addr[vout->next_frm->i]
646 + vout->cropped_offset;
647
648 /* First save the configuration in ovelray structure */
649 ret = omapvid_init(vout, addr);
650 if (ret) {
651 printk(KERN_ERR VOUT_NAME
652 "failed to set overlay info\n");
653 goto vout_isr_err;
654 }
655
656 /* Enable the pipeline and set the Go bit */
657 ret = omapvid_apply_changes(vout);
658 if (ret)
659 printk(KERN_ERR VOUT_NAME "failed to change mode\n");
660
661 vout_isr_err:
662 spin_unlock(&vout->vbq_lock);
663 }
664
665 /* Video buffer call backs */
666
667 /*
668 * Buffer setup function is called by videobuf layer when REQBUF ioctl is
669 * called. This is used to setup buffers and return size and count of
670 * buffers allocated. After the call to this buffer, videobuf layer will
671 * setup buffer queue depending on the size and count of buffers
672 */
673 static int omap_vout_buffer_setup(struct videobuf_queue *q, unsigned int *count,
674 unsigned int *size)
675 {
676 int startindex = 0, i, j;
677 u32 phy_addr = 0, virt_addr = 0;
678 struct omap_vout_device *vout = q->priv_data;
679 struct omapvideo_info *ovid = &vout->vid_info;
680 int vid_max_buf_size;
681
682 if (!vout)
683 return -EINVAL;
684
685 vid_max_buf_size = vout->vid == OMAP_VIDEO1 ? video1_bufsize :
686 video2_bufsize;
687
688 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != q->type)
689 return -EINVAL;
690
691 startindex = (vout->vid == OMAP_VIDEO1) ?
692 video1_numbuffers : video2_numbuffers;
693 if (V4L2_MEMORY_MMAP == vout->memory && *count < startindex)
694 *count = startindex;
695
696 if (ovid->rotation_type == VOUT_ROT_VRFB) {
697 if (omap_vout_vrfb_buffer_setup(vout, count, startindex))
698 return -ENOMEM;
699 }
700
701 if (V4L2_MEMORY_MMAP != vout->memory)
702 return 0;
703
704 /* Now allocated the V4L2 buffers */
705 *size = PAGE_ALIGN(vout->pix.width * vout->pix.height * vout->bpp);
706 startindex = (vout->vid == OMAP_VIDEO1) ?
707 video1_numbuffers : video2_numbuffers;
708
709 /* Check the size of the buffer */
710 if (*size > vid_max_buf_size) {
711 v4l2_err(&vout->vid_dev->v4l2_dev,
712 "buffer allocation mismatch [%u] [%u]\n",
713 *size, vout->buffer_size);
714 return -ENOMEM;
715 }
716
717 for (i = startindex; i < *count; i++) {
718 vout->buffer_size = *size;
719
720 virt_addr = omap_vout_alloc_buffer(vout->buffer_size,
721 &phy_addr);
722 if (!virt_addr) {
723 if (ovid->rotation_type == VOUT_ROT_NONE) {
724 break;
725 } else {
726 if (!is_rotation_enabled(vout))
727 break;
728 /* Free the VRFB buffers if no space for V4L2 buffers */
729 for (j = i; j < *count; j++) {
730 omap_vout_free_buffer(
731 vout->smsshado_virt_addr[j],
732 vout->smsshado_size);
733 vout->smsshado_virt_addr[j] = 0;
734 vout->smsshado_phy_addr[j] = 0;
735 }
736 }
737 }
738 vout->buf_virt_addr[i] = virt_addr;
739 vout->buf_phy_addr[i] = phy_addr;
740 }
741 *count = vout->buffer_allocated = i;
742
743 return 0;
744 }
745
746 /*
747 * Free the V4L2 buffers additionally allocated than default
748 * number of buffers
749 */
750 static void omap_vout_free_extra_buffers(struct omap_vout_device *vout)
751 {
752 int num_buffers = 0, i;
753
754 num_buffers = (vout->vid == OMAP_VIDEO1) ?
755 video1_numbuffers : video2_numbuffers;
756
757 for (i = num_buffers; i < vout->buffer_allocated; i++) {
758 if (vout->buf_virt_addr[i])
759 omap_vout_free_buffer(vout->buf_virt_addr[i],
760 vout->buffer_size);
761
762 vout->buf_virt_addr[i] = 0;
763 vout->buf_phy_addr[i] = 0;
764 }
765 vout->buffer_allocated = num_buffers;
766 }
767
768 /*
769 * This function will be called when VIDIOC_QBUF ioctl is called.
770 * It prepare buffers before give out for the display. This function
771 * converts user space virtual address into physical address if userptr memory
772 * exchange mechanism is used. If rotation is enabled, it copies entire
773 * buffer into VRFB memory space before giving it to the DSS.
774 */
775 static int omap_vout_buffer_prepare(struct videobuf_queue *q,
776 struct videobuf_buffer *vb,
777 enum v4l2_field field)
778 {
779 struct omap_vout_device *vout = q->priv_data;
780 struct omapvideo_info *ovid = &vout->vid_info;
781
782 if (VIDEOBUF_NEEDS_INIT == vb->state) {
783 vb->width = vout->pix.width;
784 vb->height = vout->pix.height;
785 vb->size = vb->width * vb->height * vout->bpp;
786 vb->field = field;
787 }
788 vb->state = VIDEOBUF_PREPARED;
789 /* if user pointer memory mechanism is used, get the physical
790 * address of the buffer
791 */
792 if (V4L2_MEMORY_USERPTR == vb->memory) {
793 if (0 == vb->baddr)
794 return -EINVAL;
795 /* Physical address */
796 vout->queued_buf_addr[vb->i] = (u8 *)
797 omap_vout_uservirt_to_phys(vb->baddr);
798 } else {
799 u32 addr, dma_addr;
800 unsigned long size;
801
802 addr = (unsigned long) vout->buf_virt_addr[vb->i];
803 size = (unsigned long) vb->size;
804
805 dma_addr = dma_map_single(vout->vid_dev->v4l2_dev.dev, (void *) addr,
806 size, DMA_TO_DEVICE);
807 if (dma_mapping_error(vout->vid_dev->v4l2_dev.dev, dma_addr))
808 v4l2_err(&vout->vid_dev->v4l2_dev, "dma_map_single failed\n");
809
810 vout->queued_buf_addr[vb->i] = (u8 *)vout->buf_phy_addr[vb->i];
811 }
812
813 if (ovid->rotation_type == VOUT_ROT_VRFB)
814 return omap_vout_prepare_vrfb(vout, vb);
815 else
816 return 0;
817 }
818
819 /*
820 * Buffer queue function will be called from the videobuf layer when _QBUF
821 * ioctl is called. It is used to enqueue buffer, which is ready to be
822 * displayed.
823 */
824 static void omap_vout_buffer_queue(struct videobuf_queue *q,
825 struct videobuf_buffer *vb)
826 {
827 struct omap_vout_device *vout = q->priv_data;
828
829 /* Driver is also maintainig a queue. So enqueue buffer in the driver
830 * queue */
831 list_add_tail(&vb->queue, &vout->dma_queue);
832
833 vb->state = VIDEOBUF_QUEUED;
834 }
835
836 /*
837 * Buffer release function is called from videobuf layer to release buffer
838 * which are already allocated
839 */
840 static void omap_vout_buffer_release(struct videobuf_queue *q,
841 struct videobuf_buffer *vb)
842 {
843 struct omap_vout_device *vout = q->priv_data;
844
845 vb->state = VIDEOBUF_NEEDS_INIT;
846
847 if (V4L2_MEMORY_MMAP != vout->memory)
848 return;
849 }
850
851 /*
852 * File operations
853 */
854 static unsigned int omap_vout_poll(struct file *file,
855 struct poll_table_struct *wait)
856 {
857 struct omap_vout_device *vout = file->private_data;
858 struct videobuf_queue *q = &vout->vbq;
859
860 return videobuf_poll_stream(file, q, wait);
861 }
862
863 static void omap_vout_vm_open(struct vm_area_struct *vma)
864 {
865 struct omap_vout_device *vout = vma->vm_private_data;
866
867 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
868 "vm_open [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
869 vout->mmap_count++;
870 }
871
872 static void omap_vout_vm_close(struct vm_area_struct *vma)
873 {
874 struct omap_vout_device *vout = vma->vm_private_data;
875
876 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
877 "vm_close [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
878 vout->mmap_count--;
879 }
880
881 static struct vm_operations_struct omap_vout_vm_ops = {
882 .open = omap_vout_vm_open,
883 .close = omap_vout_vm_close,
884 };
885
886 static int omap_vout_mmap(struct file *file, struct vm_area_struct *vma)
887 {
888 int i;
889 void *pos;
890 unsigned long start = vma->vm_start;
891 unsigned long size = (vma->vm_end - vma->vm_start);
892 struct omap_vout_device *vout = file->private_data;
893 struct videobuf_queue *q = &vout->vbq;
894
895 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
896 " %s pgoff=0x%lx, start=0x%lx, end=0x%lx\n", __func__,
897 vma->vm_pgoff, vma->vm_start, vma->vm_end);
898
899 /* look for the buffer to map */
900 for (i = 0; i < VIDEO_MAX_FRAME; i++) {
901 if (NULL == q->bufs[i])
902 continue;
903 if (V4L2_MEMORY_MMAP != q->bufs[i]->memory)
904 continue;
905 if (q->bufs[i]->boff == (vma->vm_pgoff << PAGE_SHIFT))
906 break;
907 }
908
909 if (VIDEO_MAX_FRAME == i) {
910 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
911 "offset invalid [offset=0x%lx]\n",
912 (vma->vm_pgoff << PAGE_SHIFT));
913 return -EINVAL;
914 }
915 /* Check the size of the buffer */
916 if (size > vout->buffer_size) {
917 v4l2_err(&vout->vid_dev->v4l2_dev,
918 "insufficient memory [%lu] [%u]\n",
919 size, vout->buffer_size);
920 return -ENOMEM;
921 }
922
923 q->bufs[i]->baddr = vma->vm_start;
924
925 vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
926 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
927 vma->vm_ops = &omap_vout_vm_ops;
928 vma->vm_private_data = (void *) vout;
929 pos = (void *)vout->buf_virt_addr[i];
930 vma->vm_pgoff = virt_to_phys((void *)pos) >> PAGE_SHIFT;
931 while (size > 0) {
932 unsigned long pfn;
933 pfn = virt_to_phys((void *) pos) >> PAGE_SHIFT;
934 if (remap_pfn_range(vma, start, pfn, PAGE_SIZE, PAGE_SHARED))
935 return -EAGAIN;
936 start += PAGE_SIZE;
937 pos += PAGE_SIZE;
938 size -= PAGE_SIZE;
939 }
940 vout->mmap_count++;
941 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
942
943 return 0;
944 }
945
946 static int omap_vout_release(struct file *file)
947 {
948 unsigned int ret, i;
949 struct videobuf_queue *q;
950 struct omapvideo_info *ovid;
951 struct omap_vout_device *vout = file->private_data;
952
953 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
954 ovid = &vout->vid_info;
955
956 if (!vout)
957 return 0;
958
959 q = &vout->vbq;
960 /* Disable all the overlay managers connected with this interface */
961 for (i = 0; i < ovid->num_overlays; i++) {
962 struct omap_overlay *ovl = ovid->overlays[i];
963 struct omap_dss_device *dssdev = ovl->get_device(ovl);
964
965 if (dssdev)
966 ovl->disable(ovl);
967 }
968 /* Turn off the pipeline */
969 ret = omapvid_apply_changes(vout);
970 if (ret)
971 v4l2_warn(&vout->vid_dev->v4l2_dev,
972 "Unable to apply changes\n");
973
974 /* Free all buffers */
975 omap_vout_free_extra_buffers(vout);
976
977 /* Free the VRFB buffers only if they are allocated
978 * during reqbufs. Don't free if init time allocated
979 */
980 if (ovid->rotation_type == VOUT_ROT_VRFB) {
981 if (!vout->vrfb_static_allocation)
982 omap_vout_free_vrfb_buffers(vout);
983 }
984 videobuf_mmap_free(q);
985
986 /* Even if apply changes fails we should continue
987 freeing allocated memory */
988 if (vout->streaming) {
989 u32 mask = 0;
990
991 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN |
992 DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_VSYNC2;
993 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
994 vout->streaming = 0;
995
996 videobuf_streamoff(q);
997 videobuf_queue_cancel(q);
998 }
999
1000 if (vout->mmap_count != 0)
1001 vout->mmap_count = 0;
1002
1003 vout->opened -= 1;
1004 file->private_data = NULL;
1005
1006 if (vout->buffer_allocated)
1007 videobuf_mmap_free(q);
1008
1009 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1010 return ret;
1011 }
1012
1013 static int omap_vout_open(struct file *file)
1014 {
1015 struct videobuf_queue *q;
1016 struct omap_vout_device *vout = NULL;
1017
1018 vout = video_drvdata(file);
1019 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
1020
1021 if (vout == NULL)
1022 return -ENODEV;
1023
1024 /* for now, we only support single open */
1025 if (vout->opened)
1026 return -EBUSY;
1027
1028 vout->opened += 1;
1029
1030 file->private_data = vout;
1031 vout->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1032
1033 q = &vout->vbq;
1034 video_vbq_ops.buf_setup = omap_vout_buffer_setup;
1035 video_vbq_ops.buf_prepare = omap_vout_buffer_prepare;
1036 video_vbq_ops.buf_release = omap_vout_buffer_release;
1037 video_vbq_ops.buf_queue = omap_vout_buffer_queue;
1038 spin_lock_init(&vout->vbq_lock);
1039
1040 videobuf_queue_dma_contig_init(q, &video_vbq_ops, q->dev,
1041 &vout->vbq_lock, vout->type, V4L2_FIELD_NONE,
1042 sizeof(struct videobuf_buffer), vout, NULL);
1043
1044 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1045 return 0;
1046 }
1047
1048 /*
1049 * V4L2 ioctls
1050 */
1051 static int vidioc_querycap(struct file *file, void *fh,
1052 struct v4l2_capability *cap)
1053 {
1054 struct omap_vout_device *vout = fh;
1055
1056 strlcpy(cap->driver, VOUT_NAME, sizeof(cap->driver));
1057 strlcpy(cap->card, vout->vfd->name, sizeof(cap->card));
1058 cap->bus_info[0] = '\0';
1059 cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_OUTPUT |
1060 V4L2_CAP_VIDEO_OUTPUT_OVERLAY;
1061
1062 return 0;
1063 }
1064
1065 static int vidioc_enum_fmt_vid_out(struct file *file, void *fh,
1066 struct v4l2_fmtdesc *fmt)
1067 {
1068 int index = fmt->index;
1069
1070 if (index >= NUM_OUTPUT_FORMATS)
1071 return -EINVAL;
1072
1073 fmt->flags = omap_formats[index].flags;
1074 strlcpy(fmt->description, omap_formats[index].description,
1075 sizeof(fmt->description));
1076 fmt->pixelformat = omap_formats[index].pixelformat;
1077
1078 return 0;
1079 }
1080
1081 static int vidioc_g_fmt_vid_out(struct file *file, void *fh,
1082 struct v4l2_format *f)
1083 {
1084 struct omap_vout_device *vout = fh;
1085
1086 f->fmt.pix = vout->pix;
1087 return 0;
1088
1089 }
1090
1091 static int vidioc_try_fmt_vid_out(struct file *file, void *fh,
1092 struct v4l2_format *f)
1093 {
1094 struct omap_overlay *ovl;
1095 struct omapvideo_info *ovid;
1096 struct omap_video_timings *timing;
1097 struct omap_vout_device *vout = fh;
1098 struct omap_dss_device *dssdev;
1099
1100 ovid = &vout->vid_info;
1101 ovl = ovid->overlays[0];
1102 /* get the display device attached to the overlay */
1103 dssdev = ovl->get_device(ovl);
1104
1105 if (!dssdev)
1106 return -EINVAL;
1107
1108 timing = &dssdev->panel.timings;
1109
1110 vout->fbuf.fmt.height = timing->y_res;
1111 vout->fbuf.fmt.width = timing->x_res;
1112
1113 omap_vout_try_format(&f->fmt.pix);
1114 return 0;
1115 }
1116
1117 static int vidioc_s_fmt_vid_out(struct file *file, void *fh,
1118 struct v4l2_format *f)
1119 {
1120 int ret, bpp;
1121 struct omap_overlay *ovl;
1122 struct omapvideo_info *ovid;
1123 struct omap_video_timings *timing;
1124 struct omap_vout_device *vout = fh;
1125 struct omap_dss_device *dssdev;
1126
1127 if (vout->streaming)
1128 return -EBUSY;
1129
1130 mutex_lock(&vout->lock);
1131
1132 ovid = &vout->vid_info;
1133 ovl = ovid->overlays[0];
1134 dssdev = ovl->get_device(ovl);
1135
1136 /* get the display device attached to the overlay */
1137 if (!dssdev) {
1138 ret = -EINVAL;
1139 goto s_fmt_vid_out_exit;
1140 }
1141 timing = &dssdev->panel.timings;
1142
1143 /* We dont support RGB24-packed mode if vrfb rotation
1144 * is enabled*/
1145 if ((is_rotation_enabled(vout)) &&
1146 f->fmt.pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1147 ret = -EINVAL;
1148 goto s_fmt_vid_out_exit;
1149 }
1150
1151 /* get the framebuffer parameters */
1152
1153 if (is_rotation_90_or_270(vout)) {
1154 vout->fbuf.fmt.height = timing->x_res;
1155 vout->fbuf.fmt.width = timing->y_res;
1156 } else {
1157 vout->fbuf.fmt.height = timing->y_res;
1158 vout->fbuf.fmt.width = timing->x_res;
1159 }
1160
1161 /* change to samller size is OK */
1162
1163 bpp = omap_vout_try_format(&f->fmt.pix);
1164 f->fmt.pix.sizeimage = f->fmt.pix.width * f->fmt.pix.height * bpp;
1165
1166 /* try & set the new output format */
1167 vout->bpp = bpp;
1168 vout->pix = f->fmt.pix;
1169 vout->vrfb_bpp = 1;
1170
1171 /* If YUYV then vrfb bpp is 2, for others its 1 */
1172 if (V4L2_PIX_FMT_YUYV == vout->pix.pixelformat ||
1173 V4L2_PIX_FMT_UYVY == vout->pix.pixelformat)
1174 vout->vrfb_bpp = 2;
1175
1176 /* set default crop and win */
1177 omap_vout_new_format(&vout->pix, &vout->fbuf, &vout->crop, &vout->win);
1178
1179 ret = 0;
1180
1181 s_fmt_vid_out_exit:
1182 mutex_unlock(&vout->lock);
1183 return ret;
1184 }
1185
1186 static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh,
1187 struct v4l2_format *f)
1188 {
1189 int ret = 0;
1190 struct omap_vout_device *vout = fh;
1191 struct omap_overlay *ovl;
1192 struct omapvideo_info *ovid;
1193 struct v4l2_window *win = &f->fmt.win;
1194
1195 ovid = &vout->vid_info;
1196 ovl = ovid->overlays[0];
1197
1198 ret = omap_vout_try_window(&vout->fbuf, win);
1199
1200 if (!ret) {
1201 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1202 win->global_alpha = 255;
1203 else
1204 win->global_alpha = f->fmt.win.global_alpha;
1205 }
1206
1207 return ret;
1208 }
1209
1210 static int vidioc_s_fmt_vid_overlay(struct file *file, void *fh,
1211 struct v4l2_format *f)
1212 {
1213 int ret = 0;
1214 struct omap_overlay *ovl;
1215 struct omapvideo_info *ovid;
1216 struct omap_vout_device *vout = fh;
1217 struct v4l2_window *win = &f->fmt.win;
1218
1219 mutex_lock(&vout->lock);
1220 ovid = &vout->vid_info;
1221 ovl = ovid->overlays[0];
1222
1223 ret = omap_vout_new_window(&vout->crop, &vout->win, &vout->fbuf, win);
1224 if (!ret) {
1225 /* Video1 plane does not support global alpha on OMAP3 */
1226 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1227 vout->win.global_alpha = 255;
1228 else
1229 vout->win.global_alpha = f->fmt.win.global_alpha;
1230
1231 vout->win.chromakey = f->fmt.win.chromakey;
1232 }
1233 mutex_unlock(&vout->lock);
1234 return ret;
1235 }
1236
1237 static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh,
1238 struct v4l2_format *f)
1239 {
1240 u32 key_value = 0;
1241 struct omap_overlay *ovl;
1242 struct omapvideo_info *ovid;
1243 struct omap_vout_device *vout = fh;
1244 struct omap_overlay_manager_info info;
1245 struct v4l2_window *win = &f->fmt.win;
1246
1247 ovid = &vout->vid_info;
1248 ovl = ovid->overlays[0];
1249
1250 win->w = vout->win.w;
1251 win->field = vout->win.field;
1252 win->global_alpha = vout->win.global_alpha;
1253
1254 if (ovl->manager && ovl->manager->get_manager_info) {
1255 ovl->manager->get_manager_info(ovl->manager, &info);
1256 key_value = info.trans_key;
1257 }
1258 win->chromakey = key_value;
1259 return 0;
1260 }
1261
1262 static int vidioc_cropcap(struct file *file, void *fh,
1263 struct v4l2_cropcap *cropcap)
1264 {
1265 struct omap_vout_device *vout = fh;
1266 struct v4l2_pix_format *pix = &vout->pix;
1267
1268 if (cropcap->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1269 return -EINVAL;
1270
1271 /* Width and height are always even */
1272 cropcap->bounds.width = pix->width & ~1;
1273 cropcap->bounds.height = pix->height & ~1;
1274
1275 omap_vout_default_crop(&vout->pix, &vout->fbuf, &cropcap->defrect);
1276 cropcap->pixelaspect.numerator = 1;
1277 cropcap->pixelaspect.denominator = 1;
1278 return 0;
1279 }
1280
1281 static int vidioc_g_crop(struct file *file, void *fh, struct v4l2_crop *crop)
1282 {
1283 struct omap_vout_device *vout = fh;
1284
1285 if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1286 return -EINVAL;
1287 crop->c = vout->crop;
1288 return 0;
1289 }
1290
1291 static int vidioc_s_crop(struct file *file, void *fh, const struct v4l2_crop *crop)
1292 {
1293 int ret = -EINVAL;
1294 struct omap_vout_device *vout = fh;
1295 struct omapvideo_info *ovid;
1296 struct omap_overlay *ovl;
1297 struct omap_video_timings *timing;
1298 struct omap_dss_device *dssdev;
1299
1300 if (vout->streaming)
1301 return -EBUSY;
1302
1303 mutex_lock(&vout->lock);
1304 ovid = &vout->vid_info;
1305 ovl = ovid->overlays[0];
1306 /* get the display device attached to the overlay */
1307 dssdev = ovl->get_device(ovl);
1308
1309 if (!dssdev) {
1310 ret = -EINVAL;
1311 goto s_crop_err;
1312 }
1313
1314 timing = &dssdev->panel.timings;
1315
1316 if (is_rotation_90_or_270(vout)) {
1317 vout->fbuf.fmt.height = timing->x_res;
1318 vout->fbuf.fmt.width = timing->y_res;
1319 } else {
1320 vout->fbuf.fmt.height = timing->y_res;
1321 vout->fbuf.fmt.width = timing->x_res;
1322 }
1323
1324 if (crop->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1325 ret = omap_vout_new_crop(&vout->pix, &vout->crop, &vout->win,
1326 &vout->fbuf, &crop->c);
1327
1328 s_crop_err:
1329 mutex_unlock(&vout->lock);
1330 return ret;
1331 }
1332
1333 static int vidioc_queryctrl(struct file *file, void *fh,
1334 struct v4l2_queryctrl *ctrl)
1335 {
1336 int ret = 0;
1337
1338 switch (ctrl->id) {
1339 case V4L2_CID_ROTATE:
1340 ret = v4l2_ctrl_query_fill(ctrl, 0, 270, 90, 0);
1341 break;
1342 case V4L2_CID_BG_COLOR:
1343 ret = v4l2_ctrl_query_fill(ctrl, 0, 0xFFFFFF, 1, 0);
1344 break;
1345 case V4L2_CID_VFLIP:
1346 ret = v4l2_ctrl_query_fill(ctrl, 0, 1, 1, 0);
1347 break;
1348 default:
1349 ctrl->name[0] = '\0';
1350 ret = -EINVAL;
1351 }
1352 return ret;
1353 }
1354
1355 static int vidioc_g_ctrl(struct file *file, void *fh, struct v4l2_control *ctrl)
1356 {
1357 int ret = 0;
1358 struct omap_vout_device *vout = fh;
1359
1360 switch (ctrl->id) {
1361 case V4L2_CID_ROTATE:
1362 ctrl->value = vout->control[0].value;
1363 break;
1364 case V4L2_CID_BG_COLOR:
1365 {
1366 struct omap_overlay_manager_info info;
1367 struct omap_overlay *ovl;
1368
1369 ovl = vout->vid_info.overlays[0];
1370 if (!ovl->manager || !ovl->manager->get_manager_info) {
1371 ret = -EINVAL;
1372 break;
1373 }
1374
1375 ovl->manager->get_manager_info(ovl->manager, &info);
1376 ctrl->value = info.default_color;
1377 break;
1378 }
1379 case V4L2_CID_VFLIP:
1380 ctrl->value = vout->control[2].value;
1381 break;
1382 default:
1383 ret = -EINVAL;
1384 }
1385 return ret;
1386 }
1387
1388 static int vidioc_s_ctrl(struct file *file, void *fh, struct v4l2_control *a)
1389 {
1390 int ret = 0;
1391 struct omap_vout_device *vout = fh;
1392
1393 switch (a->id) {
1394 case V4L2_CID_ROTATE:
1395 {
1396 struct omapvideo_info *ovid;
1397 int rotation = a->value;
1398
1399 ovid = &vout->vid_info;
1400
1401 mutex_lock(&vout->lock);
1402 if (rotation && ovid->rotation_type == VOUT_ROT_NONE) {
1403 mutex_unlock(&vout->lock);
1404 ret = -ERANGE;
1405 break;
1406 }
1407
1408 if (rotation && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1409 mutex_unlock(&vout->lock);
1410 ret = -EINVAL;
1411 break;
1412 }
1413
1414 if (v4l2_rot_to_dss_rot(rotation, &vout->rotation,
1415 vout->mirror)) {
1416 mutex_unlock(&vout->lock);
1417 ret = -EINVAL;
1418 break;
1419 }
1420
1421 vout->control[0].value = rotation;
1422 mutex_unlock(&vout->lock);
1423 break;
1424 }
1425 case V4L2_CID_BG_COLOR:
1426 {
1427 struct omap_overlay *ovl;
1428 unsigned int color = a->value;
1429 struct omap_overlay_manager_info info;
1430
1431 ovl = vout->vid_info.overlays[0];
1432
1433 mutex_lock(&vout->lock);
1434 if (!ovl->manager || !ovl->manager->get_manager_info) {
1435 mutex_unlock(&vout->lock);
1436 ret = -EINVAL;
1437 break;
1438 }
1439
1440 ovl->manager->get_manager_info(ovl->manager, &info);
1441 info.default_color = color;
1442 if (ovl->manager->set_manager_info(ovl->manager, &info)) {
1443 mutex_unlock(&vout->lock);
1444 ret = -EINVAL;
1445 break;
1446 }
1447
1448 vout->control[1].value = color;
1449 mutex_unlock(&vout->lock);
1450 break;
1451 }
1452 case V4L2_CID_VFLIP:
1453 {
1454 struct omap_overlay *ovl;
1455 struct omapvideo_info *ovid;
1456 unsigned int mirror = a->value;
1457
1458 ovid = &vout->vid_info;
1459 ovl = ovid->overlays[0];
1460
1461 mutex_lock(&vout->lock);
1462 if (mirror && ovid->rotation_type == VOUT_ROT_NONE) {
1463 mutex_unlock(&vout->lock);
1464 ret = -ERANGE;
1465 break;
1466 }
1467
1468 if (mirror && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1469 mutex_unlock(&vout->lock);
1470 ret = -EINVAL;
1471 break;
1472 }
1473 vout->mirror = mirror;
1474 vout->control[2].value = mirror;
1475 mutex_unlock(&vout->lock);
1476 break;
1477 }
1478 default:
1479 ret = -EINVAL;
1480 }
1481 return ret;
1482 }
1483
1484 static int vidioc_reqbufs(struct file *file, void *fh,
1485 struct v4l2_requestbuffers *req)
1486 {
1487 int ret = 0;
1488 unsigned int i, num_buffers = 0;
1489 struct omap_vout_device *vout = fh;
1490 struct videobuf_queue *q = &vout->vbq;
1491
1492 if ((req->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) || (req->count < 0))
1493 return -EINVAL;
1494 /* if memory is not mmp or userptr
1495 return error */
1496 if ((V4L2_MEMORY_MMAP != req->memory) &&
1497 (V4L2_MEMORY_USERPTR != req->memory))
1498 return -EINVAL;
1499
1500 mutex_lock(&vout->lock);
1501 /* Cannot be requested when streaming is on */
1502 if (vout->streaming) {
1503 ret = -EBUSY;
1504 goto reqbuf_err;
1505 }
1506
1507 /* If buffers are already allocated free them */
1508 if (q->bufs[0] && (V4L2_MEMORY_MMAP == q->bufs[0]->memory)) {
1509 if (vout->mmap_count) {
1510 ret = -EBUSY;
1511 goto reqbuf_err;
1512 }
1513 num_buffers = (vout->vid == OMAP_VIDEO1) ?
1514 video1_numbuffers : video2_numbuffers;
1515 for (i = num_buffers; i < vout->buffer_allocated; i++) {
1516 omap_vout_free_buffer(vout->buf_virt_addr[i],
1517 vout->buffer_size);
1518 vout->buf_virt_addr[i] = 0;
1519 vout->buf_phy_addr[i] = 0;
1520 }
1521 vout->buffer_allocated = num_buffers;
1522 videobuf_mmap_free(q);
1523 } else if (q->bufs[0] && (V4L2_MEMORY_USERPTR == q->bufs[0]->memory)) {
1524 if (vout->buffer_allocated) {
1525 videobuf_mmap_free(q);
1526 for (i = 0; i < vout->buffer_allocated; i++) {
1527 kfree(q->bufs[i]);
1528 q->bufs[i] = NULL;
1529 }
1530 vout->buffer_allocated = 0;
1531 }
1532 }
1533
1534 /*store the memory type in data structure */
1535 vout->memory = req->memory;
1536
1537 INIT_LIST_HEAD(&vout->dma_queue);
1538
1539 /* call videobuf_reqbufs api */
1540 ret = videobuf_reqbufs(q, req);
1541 if (ret < 0)
1542 goto reqbuf_err;
1543
1544 vout->buffer_allocated = req->count;
1545
1546 reqbuf_err:
1547 mutex_unlock(&vout->lock);
1548 return ret;
1549 }
1550
1551 static int vidioc_querybuf(struct file *file, void *fh,
1552 struct v4l2_buffer *b)
1553 {
1554 struct omap_vout_device *vout = fh;
1555
1556 return videobuf_querybuf(&vout->vbq, b);
1557 }
1558
1559 static int vidioc_qbuf(struct file *file, void *fh,
1560 struct v4l2_buffer *buffer)
1561 {
1562 struct omap_vout_device *vout = fh;
1563 struct videobuf_queue *q = &vout->vbq;
1564
1565 if ((V4L2_BUF_TYPE_VIDEO_OUTPUT != buffer->type) ||
1566 (buffer->index >= vout->buffer_allocated) ||
1567 (q->bufs[buffer->index]->memory != buffer->memory)) {
1568 return -EINVAL;
1569 }
1570 if (V4L2_MEMORY_USERPTR == buffer->memory) {
1571 if ((buffer->length < vout->pix.sizeimage) ||
1572 (0 == buffer->m.userptr)) {
1573 return -EINVAL;
1574 }
1575 }
1576
1577 if ((is_rotation_enabled(vout)) &&
1578 vout->vrfb_dma_tx.req_status == DMA_CHAN_NOT_ALLOTED) {
1579 v4l2_warn(&vout->vid_dev->v4l2_dev,
1580 "DMA Channel not allocated for Rotation\n");
1581 return -EINVAL;
1582 }
1583
1584 return videobuf_qbuf(q, buffer);
1585 }
1586
1587 static int vidioc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *b)
1588 {
1589 struct omap_vout_device *vout = fh;
1590 struct videobuf_queue *q = &vout->vbq;
1591
1592 int ret;
1593 u32 addr;
1594 unsigned long size;
1595 struct videobuf_buffer *vb;
1596
1597 vb = q->bufs[b->index];
1598
1599 if (!vout->streaming)
1600 return -EINVAL;
1601
1602 if (file->f_flags & O_NONBLOCK)
1603 /* Call videobuf_dqbuf for non blocking mode */
1604 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 1);
1605 else
1606 /* Call videobuf_dqbuf for blocking mode */
1607 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 0);
1608
1609 addr = (unsigned long) vout->buf_phy_addr[vb->i];
1610 size = (unsigned long) vb->size;
1611 dma_unmap_single(vout->vid_dev->v4l2_dev.dev, addr,
1612 size, DMA_TO_DEVICE);
1613 return ret;
1614 }
1615
1616 static int vidioc_streamon(struct file *file, void *fh, enum v4l2_buf_type i)
1617 {
1618 int ret = 0, j;
1619 u32 addr = 0, mask = 0;
1620 struct omap_vout_device *vout = fh;
1621 struct videobuf_queue *q = &vout->vbq;
1622 struct omapvideo_info *ovid = &vout->vid_info;
1623
1624 mutex_lock(&vout->lock);
1625
1626 if (vout->streaming) {
1627 ret = -EBUSY;
1628 goto streamon_err;
1629 }
1630
1631 ret = videobuf_streamon(q);
1632 if (ret)
1633 goto streamon_err;
1634
1635 if (list_empty(&vout->dma_queue)) {
1636 ret = -EIO;
1637 goto streamon_err1;
1638 }
1639
1640 /* Get the next frame from the buffer queue */
1641 vout->next_frm = vout->cur_frm = list_entry(vout->dma_queue.next,
1642 struct videobuf_buffer, queue);
1643 /* Remove buffer from the buffer queue */
1644 list_del(&vout->cur_frm->queue);
1645 /* Mark state of the current frame to active */
1646 vout->cur_frm->state = VIDEOBUF_ACTIVE;
1647 /* Initialize field_id and started member */
1648 vout->field_id = 0;
1649
1650 /* set flag here. Next QBUF will start DMA */
1651 vout->streaming = 1;
1652
1653 vout->first_int = 1;
1654
1655 if (omap_vout_calculate_offset(vout)) {
1656 ret = -EINVAL;
1657 goto streamon_err1;
1658 }
1659 addr = (unsigned long) vout->queued_buf_addr[vout->cur_frm->i]
1660 + vout->cropped_offset;
1661
1662 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1663 | DISPC_IRQ_VSYNC2;
1664
1665 /* First save the configuration in ovelray structure */
1666 ret = omapvid_init(vout, addr);
1667 if (ret) {
1668 v4l2_err(&vout->vid_dev->v4l2_dev,
1669 "failed to set overlay info\n");
1670 goto streamon_err1;
1671 }
1672
1673 omap_dispc_register_isr(omap_vout_isr, vout, mask);
1674
1675 /* Enable the pipeline and set the Go bit */
1676 ret = omapvid_apply_changes(vout);
1677 if (ret)
1678 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1679
1680 for (j = 0; j < ovid->num_overlays; j++) {
1681 struct omap_overlay *ovl = ovid->overlays[j];
1682 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1683
1684 if (dssdev) {
1685 ret = ovl->enable(ovl);
1686 if (ret)
1687 goto streamon_err1;
1688 }
1689 }
1690
1691 ret = 0;
1692
1693 streamon_err1:
1694 if (ret)
1695 ret = videobuf_streamoff(q);
1696 streamon_err:
1697 mutex_unlock(&vout->lock);
1698 return ret;
1699 }
1700
1701 static int vidioc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i)
1702 {
1703 u32 mask = 0;
1704 int ret = 0, j;
1705 struct omap_vout_device *vout = fh;
1706 struct omapvideo_info *ovid = &vout->vid_info;
1707
1708 if (!vout->streaming)
1709 return -EINVAL;
1710
1711 vout->streaming = 0;
1712 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1713 | DISPC_IRQ_VSYNC2;
1714
1715 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
1716
1717 for (j = 0; j < ovid->num_overlays; j++) {
1718 struct omap_overlay *ovl = ovid->overlays[j];
1719 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1720
1721 if (dssdev)
1722 ovl->disable(ovl);
1723 }
1724
1725 /* Turn of the pipeline */
1726 ret = omapvid_apply_changes(vout);
1727 if (ret)
1728 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode in"
1729 " streamoff\n");
1730
1731 INIT_LIST_HEAD(&vout->dma_queue);
1732 ret = videobuf_streamoff(&vout->vbq);
1733
1734 return ret;
1735 }
1736
1737 static int vidioc_s_fbuf(struct file *file, void *fh,
1738 const struct v4l2_framebuffer *a)
1739 {
1740 int enable = 0;
1741 struct omap_overlay *ovl;
1742 struct omapvideo_info *ovid;
1743 struct omap_vout_device *vout = fh;
1744 struct omap_overlay_manager_info info;
1745 enum omap_dss_trans_key_type key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1746
1747 ovid = &vout->vid_info;
1748 ovl = ovid->overlays[0];
1749
1750 /* OMAP DSS doesn't support Source and Destination color
1751 key together */
1752 if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY) &&
1753 (a->flags & V4L2_FBUF_FLAG_CHROMAKEY))
1754 return -EINVAL;
1755 /* OMAP DSS Doesn't support the Destination color key
1756 and alpha blending together */
1757 if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY) &&
1758 (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA))
1759 return -EINVAL;
1760
1761 if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY)) {
1762 vout->fbuf.flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1763 key_type = OMAP_DSS_COLOR_KEY_VID_SRC;
1764 } else
1765 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1766
1767 if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY)) {
1768 vout->fbuf.flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1769 key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1770 } else
1771 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_CHROMAKEY;
1772
1773 if (a->flags & (V4L2_FBUF_FLAG_CHROMAKEY |
1774 V4L2_FBUF_FLAG_SRC_CHROMAKEY))
1775 enable = 1;
1776 else
1777 enable = 0;
1778 if (ovl->manager && ovl->manager->get_manager_info &&
1779 ovl->manager->set_manager_info) {
1780
1781 ovl->manager->get_manager_info(ovl->manager, &info);
1782 info.trans_enabled = enable;
1783 info.trans_key_type = key_type;
1784 info.trans_key = vout->win.chromakey;
1785
1786 if (ovl->manager->set_manager_info(ovl->manager, &info))
1787 return -EINVAL;
1788 }
1789 if (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA) {
1790 vout->fbuf.flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1791 enable = 1;
1792 } else {
1793 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_LOCAL_ALPHA;
1794 enable = 0;
1795 }
1796 if (ovl->manager && ovl->manager->get_manager_info &&
1797 ovl->manager->set_manager_info) {
1798 ovl->manager->get_manager_info(ovl->manager, &info);
1799 /* enable this only if there is no zorder cap */
1800 if ((ovl->caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
1801 info.partial_alpha_enabled = enable;
1802 if (ovl->manager->set_manager_info(ovl->manager, &info))
1803 return -EINVAL;
1804 }
1805
1806 return 0;
1807 }
1808
1809 static int vidioc_g_fbuf(struct file *file, void *fh,
1810 struct v4l2_framebuffer *a)
1811 {
1812 struct omap_overlay *ovl;
1813 struct omapvideo_info *ovid;
1814 struct omap_vout_device *vout = fh;
1815 struct omap_overlay_manager_info info;
1816
1817 ovid = &vout->vid_info;
1818 ovl = ovid->overlays[0];
1819
1820 /* The video overlay must stay within the framebuffer and can't be
1821 positioned independently. */
1822 a->flags = V4L2_FBUF_FLAG_OVERLAY;
1823 a->capability = V4L2_FBUF_CAP_LOCAL_ALPHA | V4L2_FBUF_CAP_CHROMAKEY
1824 | V4L2_FBUF_CAP_SRC_CHROMAKEY;
1825
1826 if (ovl->manager && ovl->manager->get_manager_info) {
1827 ovl->manager->get_manager_info(ovl->manager, &info);
1828 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_VID_SRC)
1829 a->flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1830 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_GFX_DST)
1831 a->flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1832 }
1833 if (ovl->manager && ovl->manager->get_manager_info) {
1834 ovl->manager->get_manager_info(ovl->manager, &info);
1835 if (info.partial_alpha_enabled)
1836 a->flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1837 }
1838
1839 return 0;
1840 }
1841
1842 static const struct v4l2_ioctl_ops vout_ioctl_ops = {
1843 .vidioc_querycap = vidioc_querycap,
1844 .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out,
1845 .vidioc_g_fmt_vid_out = vidioc_g_fmt_vid_out,
1846 .vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out,
1847 .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out,
1848 .vidioc_queryctrl = vidioc_queryctrl,
1849 .vidioc_g_ctrl = vidioc_g_ctrl,
1850 .vidioc_s_fbuf = vidioc_s_fbuf,
1851 .vidioc_g_fbuf = vidioc_g_fbuf,
1852 .vidioc_s_ctrl = vidioc_s_ctrl,
1853 .vidioc_try_fmt_vid_out_overlay = vidioc_try_fmt_vid_overlay,
1854 .vidioc_s_fmt_vid_out_overlay = vidioc_s_fmt_vid_overlay,
1855 .vidioc_g_fmt_vid_out_overlay = vidioc_g_fmt_vid_overlay,
1856 .vidioc_cropcap = vidioc_cropcap,
1857 .vidioc_g_crop = vidioc_g_crop,
1858 .vidioc_s_crop = vidioc_s_crop,
1859 .vidioc_reqbufs = vidioc_reqbufs,
1860 .vidioc_querybuf = vidioc_querybuf,
1861 .vidioc_qbuf = vidioc_qbuf,
1862 .vidioc_dqbuf = vidioc_dqbuf,
1863 .vidioc_streamon = vidioc_streamon,
1864 .vidioc_streamoff = vidioc_streamoff,
1865 };
1866
1867 static const struct v4l2_file_operations omap_vout_fops = {
1868 .owner = THIS_MODULE,
1869 .poll = omap_vout_poll,
1870 .unlocked_ioctl = video_ioctl2,
1871 .mmap = omap_vout_mmap,
1872 .open = omap_vout_open,
1873 .release = omap_vout_release,
1874 };
1875
1876 /* Init functions used during driver initialization */
1877 /* Initial setup of video_data */
1878 static int __init omap_vout_setup_video_data(struct omap_vout_device *vout)
1879 {
1880 struct video_device *vfd;
1881 struct v4l2_pix_format *pix;
1882 struct v4l2_control *control;
1883 struct omap_overlay *ovl = vout->vid_info.overlays[0];
1884 struct omap_dss_device *display = ovl->get_device(ovl);
1885
1886 /* set the default pix */
1887 pix = &vout->pix;
1888
1889 /* Set the default picture of QVGA */
1890 pix->width = QQVGA_WIDTH;
1891 pix->height = QQVGA_HEIGHT;
1892
1893 /* Default pixel format is RGB 5-6-5 */
1894 pix->pixelformat = V4L2_PIX_FMT_RGB565;
1895 pix->field = V4L2_FIELD_ANY;
1896 pix->bytesperline = pix->width * 2;
1897 pix->sizeimage = pix->bytesperline * pix->height;
1898 pix->colorspace = V4L2_COLORSPACE_JPEG;
1899
1900 vout->bpp = RGB565_BPP;
1901 vout->fbuf.fmt.width = display->panel.timings.x_res;
1902 vout->fbuf.fmt.height = display->panel.timings.y_res;
1903
1904 /* Set the data structures for the overlay parameters*/
1905 vout->win.global_alpha = 255;
1906 vout->fbuf.flags = 0;
1907 vout->fbuf.capability = V4L2_FBUF_CAP_LOCAL_ALPHA |
1908 V4L2_FBUF_CAP_SRC_CHROMAKEY | V4L2_FBUF_CAP_CHROMAKEY;
1909 vout->win.chromakey = 0;
1910
1911 omap_vout_new_format(pix, &vout->fbuf, &vout->crop, &vout->win);
1912
1913 /*Initialize the control variables for
1914 rotation, flipping and background color. */
1915 control = vout->control;
1916 control[0].id = V4L2_CID_ROTATE;
1917 control[0].value = 0;
1918 vout->rotation = 0;
1919 vout->mirror = 0;
1920 vout->control[2].id = V4L2_CID_HFLIP;
1921 vout->control[2].value = 0;
1922 if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
1923 vout->vrfb_bpp = 2;
1924
1925 control[1].id = V4L2_CID_BG_COLOR;
1926 control[1].value = 0;
1927
1928 /* initialize the video_device struct */
1929 vfd = vout->vfd = video_device_alloc();
1930
1931 if (!vfd) {
1932 printk(KERN_ERR VOUT_NAME ": could not allocate"
1933 " video device struct\n");
1934 return -ENOMEM;
1935 }
1936 vfd->release = video_device_release;
1937 vfd->ioctl_ops = &vout_ioctl_ops;
1938
1939 strlcpy(vfd->name, VOUT_NAME, sizeof(vfd->name));
1940
1941 vfd->fops = &omap_vout_fops;
1942 vfd->v4l2_dev = &vout->vid_dev->v4l2_dev;
1943 vfd->vfl_dir = VFL_DIR_TX;
1944 mutex_init(&vout->lock);
1945
1946 vfd->minor = -1;
1947 return 0;
1948
1949 }
1950
1951 /* Setup video buffers */
1952 static int __init omap_vout_setup_video_bufs(struct platform_device *pdev,
1953 int vid_num)
1954 {
1955 u32 numbuffers;
1956 int ret = 0, i;
1957 struct omapvideo_info *ovid;
1958 struct omap_vout_device *vout;
1959 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1960 struct omap2video_device *vid_dev =
1961 container_of(v4l2_dev, struct omap2video_device, v4l2_dev);
1962
1963 vout = vid_dev->vouts[vid_num];
1964 ovid = &vout->vid_info;
1965
1966 numbuffers = (vid_num == 0) ? video1_numbuffers : video2_numbuffers;
1967 vout->buffer_size = (vid_num == 0) ? video1_bufsize : video2_bufsize;
1968 dev_info(&pdev->dev, "Buffer Size = %d\n", vout->buffer_size);
1969
1970 for (i = 0; i < numbuffers; i++) {
1971 vout->buf_virt_addr[i] =
1972 omap_vout_alloc_buffer(vout->buffer_size,
1973 (u32 *) &vout->buf_phy_addr[i]);
1974 if (!vout->buf_virt_addr[i]) {
1975 numbuffers = i;
1976 ret = -ENOMEM;
1977 goto free_buffers;
1978 }
1979 }
1980
1981 vout->cropped_offset = 0;
1982
1983 if (ovid->rotation_type == VOUT_ROT_VRFB) {
1984 int static_vrfb_allocation = (vid_num == 0) ?
1985 vid1_static_vrfb_alloc : vid2_static_vrfb_alloc;
1986 ret = omap_vout_setup_vrfb_bufs(pdev, vid_num,
1987 static_vrfb_allocation);
1988 }
1989
1990 return ret;
1991
1992 free_buffers:
1993 for (i = 0; i < numbuffers; i++) {
1994 omap_vout_free_buffer(vout->buf_virt_addr[i],
1995 vout->buffer_size);
1996 vout->buf_virt_addr[i] = 0;
1997 vout->buf_phy_addr[i] = 0;
1998 }
1999 return ret;
2000
2001 }
2002
2003 /* Create video out devices */
2004 static int __init omap_vout_create_video_devices(struct platform_device *pdev)
2005 {
2006 int ret = 0, k;
2007 struct omap_vout_device *vout;
2008 struct video_device *vfd = NULL;
2009 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2010 struct omap2video_device *vid_dev = container_of(v4l2_dev,
2011 struct omap2video_device, v4l2_dev);
2012
2013 for (k = 0; k < pdev->num_resources; k++) {
2014
2015 vout = kzalloc(sizeof(struct omap_vout_device), GFP_KERNEL);
2016 if (!vout) {
2017 dev_err(&pdev->dev, ": could not allocate memory\n");
2018 return -ENOMEM;
2019 }
2020
2021 vout->vid = k;
2022 vid_dev->vouts[k] = vout;
2023 vout->vid_dev = vid_dev;
2024 /* Select video2 if only 1 overlay is controlled by V4L2 */
2025 if (pdev->num_resources == 1)
2026 vout->vid_info.overlays[0] = vid_dev->overlays[k + 2];
2027 else
2028 /* Else select video1 and video2 one by one. */
2029 vout->vid_info.overlays[0] = vid_dev->overlays[k + 1];
2030 vout->vid_info.num_overlays = 1;
2031 vout->vid_info.id = k + 1;
2032
2033 /* Set VRFB as rotation_type for omap2 and omap3 */
2034 if (omap_vout_dss_omap24xx() || omap_vout_dss_omap34xx())
2035 vout->vid_info.rotation_type = VOUT_ROT_VRFB;
2036
2037 /* Setup the default configuration for the video devices
2038 */
2039 if (omap_vout_setup_video_data(vout) != 0) {
2040 ret = -ENOMEM;
2041 goto error;
2042 }
2043
2044 /* Allocate default number of buffers for the video streaming
2045 * and reserve the VRFB space for rotation
2046 */
2047 if (omap_vout_setup_video_bufs(pdev, k) != 0) {
2048 ret = -ENOMEM;
2049 goto error1;
2050 }
2051
2052 /* Register the Video device with V4L2
2053 */
2054 vfd = vout->vfd;
2055 if (video_register_device(vfd, VFL_TYPE_GRABBER, -1) < 0) {
2056 dev_err(&pdev->dev, ": Could not register "
2057 "Video for Linux device\n");
2058 vfd->minor = -1;
2059 ret = -ENODEV;
2060 goto error2;
2061 }
2062 video_set_drvdata(vfd, vout);
2063
2064 dev_info(&pdev->dev, ": registered and initialized"
2065 " video device %d\n", vfd->minor);
2066 if (k == (pdev->num_resources - 1))
2067 return 0;
2068
2069 continue;
2070 error2:
2071 if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
2072 omap_vout_release_vrfb(vout);
2073 omap_vout_free_buffers(vout);
2074 error1:
2075 video_device_release(vfd);
2076 error:
2077 kfree(vout);
2078 return ret;
2079 }
2080
2081 return -ENODEV;
2082 }
2083 /* Driver functions */
2084 static void omap_vout_cleanup_device(struct omap_vout_device *vout)
2085 {
2086 struct video_device *vfd;
2087 struct omapvideo_info *ovid;
2088
2089 if (!vout)
2090 return;
2091
2092 vfd = vout->vfd;
2093 ovid = &vout->vid_info;
2094 if (vfd) {
2095 if (!video_is_registered(vfd)) {
2096 /*
2097 * The device was never registered, so release the
2098 * video_device struct directly.
2099 */
2100 video_device_release(vfd);
2101 } else {
2102 /*
2103 * The unregister function will release the video_device
2104 * struct as well as unregistering it.
2105 */
2106 video_unregister_device(vfd);
2107 }
2108 }
2109 if (ovid->rotation_type == VOUT_ROT_VRFB) {
2110 omap_vout_release_vrfb(vout);
2111 /* Free the VRFB buffer if allocated
2112 * init time
2113 */
2114 if (vout->vrfb_static_allocation)
2115 omap_vout_free_vrfb_buffers(vout);
2116 }
2117 omap_vout_free_buffers(vout);
2118
2119 kfree(vout);
2120 }
2121
2122 static int omap_vout_remove(struct platform_device *pdev)
2123 {
2124 int k;
2125 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2126 struct omap2video_device *vid_dev = container_of(v4l2_dev, struct
2127 omap2video_device, v4l2_dev);
2128
2129 v4l2_device_unregister(v4l2_dev);
2130 for (k = 0; k < pdev->num_resources; k++)
2131 omap_vout_cleanup_device(vid_dev->vouts[k]);
2132
2133 for (k = 0; k < vid_dev->num_displays; k++) {
2134 if (vid_dev->displays[k]->state != OMAP_DSS_DISPLAY_DISABLED)
2135 vid_dev->displays[k]->driver->disable(vid_dev->displays[k]);
2136
2137 omap_dss_put_device(vid_dev->displays[k]);
2138 }
2139 kfree(vid_dev);
2140 return 0;
2141 }
2142
2143 static int __init omap_vout_probe(struct platform_device *pdev)
2144 {
2145 int ret = 0, i;
2146 struct omap_overlay *ovl;
2147 struct omap_dss_device *dssdev = NULL;
2148 struct omap_dss_device *def_display;
2149 struct omap2video_device *vid_dev = NULL;
2150
2151 if (omapdss_is_initialized() == false)
2152 return -EPROBE_DEFER;
2153
2154 ret = omapdss_compat_init();
2155 if (ret) {
2156 dev_err(&pdev->dev, "failed to init dss\n");
2157 return ret;
2158 }
2159
2160 if (pdev->num_resources == 0) {
2161 dev_err(&pdev->dev, "probed for an unknown device\n");
2162 ret = -ENODEV;
2163 goto err_dss_init;
2164 }
2165
2166 vid_dev = kzalloc(sizeof(struct omap2video_device), GFP_KERNEL);
2167 if (vid_dev == NULL) {
2168 ret = -ENOMEM;
2169 goto err_dss_init;
2170 }
2171
2172 vid_dev->num_displays = 0;
2173 for_each_dss_dev(dssdev) {
2174 omap_dss_get_device(dssdev);
2175
2176 if (!dssdev->driver) {
2177 dev_warn(&pdev->dev, "no driver for display: %s\n",
2178 dssdev->name);
2179 omap_dss_put_device(dssdev);
2180 continue;
2181 }
2182
2183 vid_dev->displays[vid_dev->num_displays++] = dssdev;
2184 }
2185
2186 if (vid_dev->num_displays == 0) {
2187 dev_err(&pdev->dev, "no displays\n");
2188 ret = -EINVAL;
2189 goto probe_err0;
2190 }
2191
2192 vid_dev->num_overlays = omap_dss_get_num_overlays();
2193 for (i = 0; i < vid_dev->num_overlays; i++)
2194 vid_dev->overlays[i] = omap_dss_get_overlay(i);
2195
2196 vid_dev->num_managers = omap_dss_get_num_overlay_managers();
2197 for (i = 0; i < vid_dev->num_managers; i++)
2198 vid_dev->managers[i] = omap_dss_get_overlay_manager(i);
2199
2200 /* Get the Video1 overlay and video2 overlay.
2201 * Setup the Display attached to that overlays
2202 */
2203 for (i = 1; i < vid_dev->num_overlays; i++) {
2204 ovl = omap_dss_get_overlay(i);
2205 dssdev = ovl->get_device(ovl);
2206
2207 if (dssdev) {
2208 def_display = dssdev;
2209 } else {
2210 dev_warn(&pdev->dev, "cannot find display\n");
2211 def_display = NULL;
2212 }
2213 if (def_display) {
2214 struct omap_dss_driver *dssdrv = def_display->driver;
2215
2216 ret = dssdrv->enable(def_display);
2217 if (ret) {
2218 /* Here we are not considering a error
2219 * as display may be enabled by frame
2220 * buffer driver
2221 */
2222 dev_warn(&pdev->dev,
2223 "'%s' Display already enabled\n",
2224 def_display->name);
2225 }
2226 }
2227 }
2228
2229 if (v4l2_device_register(&pdev->dev, &vid_dev->v4l2_dev) < 0) {
2230 dev_err(&pdev->dev, "v4l2_device_register failed\n");
2231 ret = -ENODEV;
2232 goto probe_err1;
2233 }
2234
2235 ret = omap_vout_create_video_devices(pdev);
2236 if (ret)
2237 goto probe_err2;
2238
2239 for (i = 0; i < vid_dev->num_displays; i++) {
2240 struct omap_dss_device *display = vid_dev->displays[i];
2241
2242 if (display->driver->update)
2243 display->driver->update(display, 0, 0,
2244 display->panel.timings.x_res,
2245 display->panel.timings.y_res);
2246 }
2247 return 0;
2248
2249 probe_err2:
2250 v4l2_device_unregister(&vid_dev->v4l2_dev);
2251 probe_err1:
2252 for (i = 1; i < vid_dev->num_overlays; i++) {
2253 def_display = NULL;
2254 ovl = omap_dss_get_overlay(i);
2255 dssdev = ovl->get_device(ovl);
2256
2257 if (dssdev)
2258 def_display = dssdev;
2259
2260 if (def_display && def_display->driver)
2261 def_display->driver->disable(def_display);
2262 }
2263 probe_err0:
2264 kfree(vid_dev);
2265 err_dss_init:
2266 omapdss_compat_uninit();
2267 return ret;
2268 }
2269
2270 static struct platform_driver omap_vout_driver = {
2271 .driver = {
2272 .name = VOUT_NAME,
2273 },
2274 .remove = omap_vout_remove,
2275 };
2276
2277 static int __init omap_vout_init(void)
2278 {
2279 if (platform_driver_probe(&omap_vout_driver, omap_vout_probe) != 0) {
2280 printk(KERN_ERR VOUT_NAME ":Could not register Video driver\n");
2281 return -EINVAL;
2282 }
2283 return 0;
2284 }
2285
2286 static void omap_vout_cleanup(void)
2287 {
2288 platform_driver_unregister(&omap_vout_driver);
2289 }
2290
2291 late_initcall(omap_vout_init);
2292 module_exit(omap_vout_cleanup);
Linux kernel - Deliverables
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