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Add linux-next specific files for 20110831
[linux-2.6/next.git] / drivers / media / video / omap / omap_vout.c
blobb5ef36222440bab59f14d8978b099b0cbe0ca8d5
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
42 #include <media/videobuf-dma-contig.h>
43 #include <media/v4l2-device.h>
44 #include <media/v4l2-ioctl.h>
45
46 #include <plat/dma.h>
47 #include <plat/vrfb.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 u32 vid1_static_vrfb_alloc;
73 static u32 vid2_static_vrfb_alloc;
74 static int 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 pix->priv = 0;
169
170 switch (pix->pixelformat) {
171 case V4L2_PIX_FMT_YUYV:
172 case V4L2_PIX_FMT_UYVY:
173 default:
174 pix->colorspace = V4L2_COLORSPACE_JPEG;
175 bpp = YUYV_BPP;
176 break;
177 case V4L2_PIX_FMT_RGB565:
178 case V4L2_PIX_FMT_RGB565X:
179 pix->colorspace = V4L2_COLORSPACE_SRGB;
180 bpp = RGB565_BPP;
181 break;
182 case V4L2_PIX_FMT_RGB24:
183 pix->colorspace = V4L2_COLORSPACE_SRGB;
184 bpp = RGB24_BPP;
185 break;
186 case V4L2_PIX_FMT_RGB32:
187 case V4L2_PIX_FMT_BGR32:
188 pix->colorspace = V4L2_COLORSPACE_SRGB;
189 bpp = RGB32_BPP;
190 break;
191 }
192 pix->bytesperline = pix->width * bpp;
193 pix->sizeimage = pix->bytesperline * pix->height;
194
195 return bpp;
196 }
197
198 /*
199 * omap_vout_uservirt_to_phys: This inline function is used to convert user
200 * space virtual address to physical address.
201 */
202 static u32 omap_vout_uservirt_to_phys(u32 virtp)
203 {
204 unsigned long physp = 0;
205 struct vm_area_struct *vma;
206 struct mm_struct *mm = current->mm;
207
208 vma = find_vma(mm, virtp);
209 /* For kernel direct-mapped memory, take the easy way */
210 if (virtp >= PAGE_OFFSET) {
211 physp = virt_to_phys((void *) virtp);
212 } else if (vma && (vma->vm_flags & VM_IO) && vma->vm_pgoff) {
213 /* this will catch, kernel-allocated, mmaped-to-usermode
214 addresses */
215 physp = (vma->vm_pgoff << PAGE_SHIFT) + (virtp - vma->vm_start);
216 } else {
217 /* otherwise, use get_user_pages() for general userland pages */
218 int res, nr_pages = 1;
219 struct page *pages;
220 down_read(&current->mm->mmap_sem);
221
222 res = get_user_pages(current, current->mm, virtp, nr_pages, 1,
223 0, &pages, NULL);
224 up_read(&current->mm->mmap_sem);
225
226 if (res == nr_pages) {
227 physp = __pa(page_address(&pages[0]) +
228 (virtp & ~PAGE_MASK));
229 } else {
230 printk(KERN_WARNING VOUT_NAME
231 "get_user_pages failed\n");
232 return 0;
233 }
234 }
235
236 return physp;
237 }
238
239 /*
240 * Free the V4L2 buffers
241 */
242 void omap_vout_free_buffers(struct omap_vout_device *vout)
243 {
244 int i, numbuffers;
245
246 /* Allocate memory for the buffers */
247 numbuffers = (vout->vid) ? video2_numbuffers : video1_numbuffers;
248 vout->buffer_size = (vout->vid) ? video2_bufsize : video1_bufsize;
249
250 for (i = 0; i < numbuffers; i++) {
251 omap_vout_free_buffer(vout->buf_virt_addr[i],
252 vout->buffer_size);
253 vout->buf_phy_addr[i] = 0;
254 vout->buf_virt_addr[i] = 0;
255 }
256 }
257
258 /*
259 * Convert V4L2 rotation to DSS rotation
260 * V4L2 understand 0, 90, 180, 270.
261 * Convert to 0, 1, 2 and 3 respectively for DSS
262 */
263 static int v4l2_rot_to_dss_rot(int v4l2_rotation,
264 enum dss_rotation *rotation, bool mirror)
265 {
266 int ret = 0;
267
268 switch (v4l2_rotation) {
269 case 90:
270 *rotation = dss_rotation_90_degree;
271 break;
272 case 180:
273 *rotation = dss_rotation_180_degree;
274 break;
275 case 270:
276 *rotation = dss_rotation_270_degree;
277 break;
278 case 0:
279 *rotation = dss_rotation_0_degree;
280 break;
281 default:
282 ret = -EINVAL;
283 }
284 return ret;
285 }
286
287 static int omap_vout_calculate_offset(struct omap_vout_device *vout)
288 {
289 struct omapvideo_info *ovid;
290 struct v4l2_rect *crop = &vout->crop;
291 struct v4l2_pix_format *pix = &vout->pix;
292 int *cropped_offset = &vout->cropped_offset;
293 int ps = 2, line_length = 0;
294
295 ovid = &vout->vid_info;
296
297 if (ovid->rotation_type == VOUT_ROT_VRFB) {
298 omap_vout_calculate_vrfb_offset(vout);
299 } else {
300 vout->line_length = line_length = pix->width;
301
302 if (V4L2_PIX_FMT_YUYV == pix->pixelformat ||
303 V4L2_PIX_FMT_UYVY == pix->pixelformat)
304 ps = 2;
305 else if (V4L2_PIX_FMT_RGB32 == pix->pixelformat)
306 ps = 4;
307 else if (V4L2_PIX_FMT_RGB24 == pix->pixelformat)
308 ps = 3;
309
310 vout->ps = ps;
311
312 *cropped_offset = (line_length * ps) *
313 crop->top + crop->left * ps;
314 }
315
316 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "%s Offset:%x\n",
317 __func__, vout->cropped_offset);
318
319 return 0;
320 }
321
322 /*
323 * Convert V4L2 pixel format to DSS pixel format
324 */
325 static int video_mode_to_dss_mode(struct omap_vout_device *vout)
326 {
327 struct omap_overlay *ovl;
328 struct omapvideo_info *ovid;
329 struct v4l2_pix_format *pix = &vout->pix;
330 enum omap_color_mode mode;
331
332 ovid = &vout->vid_info;
333 ovl = ovid->overlays[0];
334
335 switch (pix->pixelformat) {
336 case 0:
337 break;
338 case V4L2_PIX_FMT_YUYV:
339 mode = OMAP_DSS_COLOR_YUV2;
340 break;
341 case V4L2_PIX_FMT_UYVY:
342 mode = OMAP_DSS_COLOR_UYVY;
343 break;
344 case V4L2_PIX_FMT_RGB565:
345 mode = OMAP_DSS_COLOR_RGB16;
346 break;
347 case V4L2_PIX_FMT_RGB24:
348 mode = OMAP_DSS_COLOR_RGB24P;
349 break;
350 case V4L2_PIX_FMT_RGB32:
351 mode = (ovl->id == OMAP_DSS_VIDEO1) ?
352 OMAP_DSS_COLOR_RGB24U : OMAP_DSS_COLOR_ARGB32;
353 break;
354 case V4L2_PIX_FMT_BGR32:
355 mode = OMAP_DSS_COLOR_RGBX32;
356 break;
357 default:
358 mode = -EINVAL;
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.vaddr = NULL;
404 info.width = cropwidth;
405 info.height = cropheight;
406 info.color_mode = vout->dss_mode;
407 info.mirror = vout->mirror;
408 info.pos_x = posx;
409 info.pos_y = posy;
410 info.out_width = outw;
411 info.out_height = outh;
412 info.global_alpha = vout->win.global_alpha;
413 if (!is_rotation_enabled(vout)) {
414 info.rotation = 0;
415 info.rotation_type = OMAP_DSS_ROT_DMA;
416 info.screen_width = pixwidth;
417 } else {
418 info.rotation = vout->rotation;
419 info.rotation_type = OMAP_DSS_ROT_VRFB;
420 info.screen_width = 2048;
421 }
422
423 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
424 "%s enable=%d addr=%x width=%d\n height=%d color_mode=%d\n"
425 "rotation=%d mirror=%d posx=%d posy=%d out_width = %d \n"
426 "out_height=%d rotation_type=%d screen_width=%d\n",
427 __func__, info.enabled, info.paddr, info.width, info.height,
428 info.color_mode, info.rotation, info.mirror, info.pos_x,
429 info.pos_y, info.out_width, info.out_height, info.rotation_type,
430 info.screen_width);
431
432 ret = ovl->set_overlay_info(ovl, &info);
433 if (ret)
434 goto setup_ovl_err;
435
436 return 0;
437
438 setup_ovl_err:
439 v4l2_warn(&vout->vid_dev->v4l2_dev, "setup_overlay failed\n");
440 return ret;
441 }
442
443 /*
444 * Initialize the overlay structure
445 */
446 static int omapvid_init(struct omap_vout_device *vout, u32 addr)
447 {
448 int ret = 0, i;
449 struct v4l2_window *win;
450 struct omap_overlay *ovl;
451 int posx, posy, outw, outh, temp;
452 struct omap_video_timings *timing;
453 struct omapvideo_info *ovid = &vout->vid_info;
454
455 win = &vout->win;
456 for (i = 0; i < ovid->num_overlays; i++) {
457 ovl = ovid->overlays[i];
458 if (!ovl->manager || !ovl->manager->device)
459 return -EINVAL;
460
461 timing = &ovl->manager->device->panel.timings;
462
463 outw = win->w.width;
464 outh = win->w.height;
465 switch (vout->rotation) {
466 case dss_rotation_90_degree:
467 /* Invert the height and width for 90
468 * and 270 degree rotation
469 */
470 temp = outw;
471 outw = outh;
472 outh = temp;
473 posy = (timing->y_res - win->w.width) - win->w.left;
474 posx = win->w.top;
475 break;
476
477 case dss_rotation_180_degree:
478 posx = (timing->x_res - win->w.width) - win->w.left;
479 posy = (timing->y_res - win->w.height) - win->w.top;
480 break;
481
482 case dss_rotation_270_degree:
483 temp = outw;
484 outw = outh;
485 outh = temp;
486 posy = win->w.left;
487 posx = (timing->x_res - win->w.height) - win->w.top;
488 break;
489
490 default:
491 posx = win->w.left;
492 posy = win->w.top;
493 break;
494 }
495
496 ret = omapvid_setup_overlay(vout, ovl, posx, posy,
497 outw, outh, addr);
498 if (ret)
499 goto omapvid_init_err;
500 }
501 return 0;
502
503 omapvid_init_err:
504 v4l2_warn(&vout->vid_dev->v4l2_dev, "apply_changes failed\n");
505 return ret;
506 }
507
508 /*
509 * Apply the changes set the go bit of DSS
510 */
511 static int omapvid_apply_changes(struct omap_vout_device *vout)
512 {
513 int i;
514 struct omap_overlay *ovl;
515 struct omapvideo_info *ovid = &vout->vid_info;
516
517 for (i = 0; i < ovid->num_overlays; i++) {
518 ovl = ovid->overlays[i];
519 if (!ovl->manager || !ovl->manager->device)
520 return -EINVAL;
521 ovl->manager->apply(ovl->manager);
522 }
523
524 return 0;
525 }
526
527 static void omap_vout_isr(void *arg, unsigned int irqstatus)
528 {
529 int ret;
530 u32 addr, fid;
531 struct omap_overlay *ovl;
532 struct timeval timevalue;
533 struct omapvideo_info *ovid;
534 struct omap_dss_device *cur_display;
535 struct omap_vout_device *vout = (struct omap_vout_device *)arg;
536
537 if (!vout->streaming)
538 return;
539
540 ovid = &vout->vid_info;
541 ovl = ovid->overlays[0];
542 /* get the display device attached to the overlay */
543 if (!ovl->manager || !ovl->manager->device)
544 return;
545
546 cur_display = ovl->manager->device;
547
548 spin_lock(&vout->vbq_lock);
549 do_gettimeofday(&timevalue);
550
551 if (cur_display->type != OMAP_DISPLAY_TYPE_VENC) {
552 switch (cur_display->type) {
553 case OMAP_DISPLAY_TYPE_DPI:
554 if (!(irqstatus & (DISPC_IRQ_VSYNC | DISPC_IRQ_VSYNC2)))
555 goto vout_isr_err;
556 break;
557 case OMAP_DISPLAY_TYPE_HDMI:
558 if (!(irqstatus & DISPC_IRQ_EVSYNC_EVEN))
559 goto vout_isr_err;
560 break;
561 default:
562 goto vout_isr_err;
563 }
564 if (!vout->first_int && (vout->cur_frm != vout->next_frm)) {
565 vout->cur_frm->ts = timevalue;
566 vout->cur_frm->state = VIDEOBUF_DONE;
567 wake_up_interruptible(&vout->cur_frm->done);
568 vout->cur_frm = vout->next_frm;
569 }
570 vout->first_int = 0;
571 if (list_empty(&vout->dma_queue))
572 goto vout_isr_err;
573
574 vout->next_frm = list_entry(vout->dma_queue.next,
575 struct videobuf_buffer, queue);
576 list_del(&vout->next_frm->queue);
577
578 vout->next_frm->state = VIDEOBUF_ACTIVE;
579
580 addr = (unsigned long) vout->queued_buf_addr[vout->next_frm->i]
581 + vout->cropped_offset;
582
583 /* First save the configuration in ovelray structure */
584 ret = omapvid_init(vout, addr);
585 if (ret)
586 printk(KERN_ERR VOUT_NAME
587 "failed to set overlay info\n");
588 /* Enable the pipeline and set the Go bit */
589 ret = omapvid_apply_changes(vout);
590 if (ret)
591 printk(KERN_ERR VOUT_NAME "failed to change mode\n");
592 } else {
593
594 if (vout->first_int) {
595 vout->first_int = 0;
596 goto vout_isr_err;
597 }
598 if (irqstatus & DISPC_IRQ_EVSYNC_ODD)
599 fid = 1;
600 else if (irqstatus & DISPC_IRQ_EVSYNC_EVEN)
601 fid = 0;
602 else
603 goto vout_isr_err;
604
605 vout->field_id ^= 1;
606 if (fid != vout->field_id) {
607 if (0 == fid)
608 vout->field_id = fid;
609
610 goto vout_isr_err;
611 }
612 if (0 == fid) {
613 if (vout->cur_frm == vout->next_frm)
614 goto vout_isr_err;
615
616 vout->cur_frm->ts = timevalue;
617 vout->cur_frm->state = VIDEOBUF_DONE;
618 wake_up_interruptible(&vout->cur_frm->done);
619 vout->cur_frm = vout->next_frm;
620 } else if (1 == fid) {
621 if (list_empty(&vout->dma_queue) ||
622 (vout->cur_frm != vout->next_frm))
623 goto vout_isr_err;
624
625 vout->next_frm = list_entry(vout->dma_queue.next,
626 struct videobuf_buffer, queue);
627 list_del(&vout->next_frm->queue);
628
629 vout->next_frm->state = VIDEOBUF_ACTIVE;
630 addr = (unsigned long)
631 vout->queued_buf_addr[vout->next_frm->i] +
632 vout->cropped_offset;
633 /* First save the configuration in ovelray structure */
634 ret = omapvid_init(vout, addr);
635 if (ret)
636 printk(KERN_ERR VOUT_NAME
637 "failed to set overlay info\n");
638 /* Enable the pipeline and set the Go bit */
639 ret = omapvid_apply_changes(vout);
640 if (ret)
641 printk(KERN_ERR VOUT_NAME
642 "failed to change mode\n");
643 }
644
645 }
646
647 vout_isr_err:
648 spin_unlock(&vout->vbq_lock);
649 }
650
651
652 /* Video buffer call backs */
653
654 /*
655 * Buffer setup function is called by videobuf layer when REQBUF ioctl is
656 * called. This is used to setup buffers and return size and count of
657 * buffers allocated. After the call to this buffer, videobuf layer will
658 * setup buffer queue depending on the size and count of buffers
659 */
660 static int omap_vout_buffer_setup(struct videobuf_queue *q, unsigned int *count,
661 unsigned int *size)
662 {
663 int startindex = 0, i, j;
664 u32 phy_addr = 0, virt_addr = 0;
665 struct omap_vout_device *vout = q->priv_data;
666 struct omapvideo_info *ovid = &vout->vid_info;
667
668 if (!vout)
669 return -EINVAL;
670
671 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != q->type)
672 return -EINVAL;
673
674 startindex = (vout->vid == OMAP_VIDEO1) ?
675 video1_numbuffers : video2_numbuffers;
676 if (V4L2_MEMORY_MMAP == vout->memory && *count < startindex)
677 *count = startindex;
678
679 if (ovid->rotation_type == VOUT_ROT_VRFB) {
680 if (omap_vout_vrfb_buffer_setup(vout, count, startindex))
681 return -ENOMEM;
682 }
683
684 if (V4L2_MEMORY_MMAP != vout->memory)
685 return 0;
686
687 /* Now allocated the V4L2 buffers */
688 *size = PAGE_ALIGN(vout->pix.width * vout->pix.height * vout->bpp);
689 startindex = (vout->vid == OMAP_VIDEO1) ?
690 video1_numbuffers : video2_numbuffers;
691
692 /* Check the size of the buffer */
693 if (*size > vout->buffer_size) {
694 v4l2_err(&vout->vid_dev->v4l2_dev,
695 "buffer allocation mismatch [%u] [%u]\n",
696 *size, vout->buffer_size);
697 return -ENOMEM;
698 }
699
700 for (i = startindex; i < *count; i++) {
701 vout->buffer_size = *size;
702
703 virt_addr = omap_vout_alloc_buffer(vout->buffer_size,
704 &phy_addr);
705 if (!virt_addr) {
706 if (ovid->rotation_type == VOUT_ROT_NONE) {
707 break;
708 } else {
709 if (!is_rotation_enabled(vout))
710 break;
711 /* Free the VRFB buffers if no space for V4L2 buffers */
712 for (j = i; j < *count; j++) {
713 omap_vout_free_buffer(
714 vout->smsshado_virt_addr[j],
715 vout->smsshado_size);
716 vout->smsshado_virt_addr[j] = 0;
717 vout->smsshado_phy_addr[j] = 0;
718 }
719 }
720 }
721 vout->buf_virt_addr[i] = virt_addr;
722 vout->buf_phy_addr[i] = phy_addr;
723 }
724 *count = vout->buffer_allocated = i;
725
726 return 0;
727 }
728
729 /*
730 * Free the V4L2 buffers additionally allocated than default
731 * number of buffers
732 */
733 static void omap_vout_free_extra_buffers(struct omap_vout_device *vout)
734 {
735 int num_buffers = 0, i;
736
737 num_buffers = (vout->vid == OMAP_VIDEO1) ?
738 video1_numbuffers : video2_numbuffers;
739
740 for (i = num_buffers; i < vout->buffer_allocated; i++) {
741 if (vout->buf_virt_addr[i])
742 omap_vout_free_buffer(vout->buf_virt_addr[i],
743 vout->buffer_size);
744
745 vout->buf_virt_addr[i] = 0;
746 vout->buf_phy_addr[i] = 0;
747 }
748 vout->buffer_allocated = num_buffers;
749 }
750
751 /*
752 * This function will be called when VIDIOC_QBUF ioctl is called.
753 * It prepare buffers before give out for the display. This function
754 * converts user space virtual address into physical address if userptr memory
755 * exchange mechanism is used. If rotation is enabled, it copies entire
756 * buffer into VRFB memory space before giving it to the DSS.
757 */
758 static int omap_vout_buffer_prepare(struct videobuf_queue *q,
759 struct videobuf_buffer *vb,
760 enum v4l2_field field)
761 {
762 struct omap_vout_device *vout = q->priv_data;
763 struct omapvideo_info *ovid = &vout->vid_info;
764
765 if (VIDEOBUF_NEEDS_INIT == vb->state) {
766 vb->width = vout->pix.width;
767 vb->height = vout->pix.height;
768 vb->size = vb->width * vb->height * vout->bpp;
769 vb->field = field;
770 }
771 vb->state = VIDEOBUF_PREPARED;
772 /* if user pointer memory mechanism is used, get the physical
773 * address of the buffer
774 */
775 if (V4L2_MEMORY_USERPTR == vb->memory) {
776 if (0 == vb->baddr)
777 return -EINVAL;
778 /* Physical address */
779 vout->queued_buf_addr[vb->i] = (u8 *)
780 omap_vout_uservirt_to_phys(vb->baddr);
781 } else {
782 u32 addr, dma_addr;
783 unsigned long size;
784
785 addr = (unsigned long) vout->buf_virt_addr[vb->i];
786 size = (unsigned long) vb->size;
787
788 dma_addr = dma_map_single(vout->vid_dev->v4l2_dev.dev, (void *) addr,
789 size, DMA_TO_DEVICE);
790 if (dma_mapping_error(vout->vid_dev->v4l2_dev.dev, dma_addr))
791 v4l2_err(&vout->vid_dev->v4l2_dev, "dma_map_single failed\n");
792
793 vout->queued_buf_addr[vb->i] = (u8 *)vout->buf_phy_addr[vb->i];
794 }
795
796 if (ovid->rotation_type == VOUT_ROT_VRFB)
797 return omap_vout_prepare_vrfb(vout, vb);
798 else
799 return 0;
800 }
801
802 /*
803 * Buffer queue function will be called from the videobuf layer when _QBUF
804 * ioctl is called. It is used to enqueue buffer, which is ready to be
805 * displayed.
806 */
807 static void omap_vout_buffer_queue(struct videobuf_queue *q,
808 struct videobuf_buffer *vb)
809 {
810 struct omap_vout_device *vout = q->priv_data;
811
812 /* Driver is also maintainig a queue. So enqueue buffer in the driver
813 * queue */
814 list_add_tail(&vb->queue, &vout->dma_queue);
815
816 vb->state = VIDEOBUF_QUEUED;
817 }
818
819 /*
820 * Buffer release function is called from videobuf layer to release buffer
821 * which are already allocated
822 */
823 static void omap_vout_buffer_release(struct videobuf_queue *q,
824 struct videobuf_buffer *vb)
825 {
826 struct omap_vout_device *vout = q->priv_data;
827
828 vb->state = VIDEOBUF_NEEDS_INIT;
829
830 if (V4L2_MEMORY_MMAP != vout->memory)
831 return;
832 }
833
834 /*
835 * File operations
836 */
837 static void omap_vout_vm_open(struct vm_area_struct *vma)
838 {
839 struct omap_vout_device *vout = vma->vm_private_data;
840
841 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
842 "vm_open [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
843 vout->mmap_count++;
844 }
845
846 static void omap_vout_vm_close(struct vm_area_struct *vma)
847 {
848 struct omap_vout_device *vout = vma->vm_private_data;
849
850 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
851 "vm_close [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
852 vout->mmap_count--;
853 }
854
855 static struct vm_operations_struct omap_vout_vm_ops = {
856 .open = omap_vout_vm_open,
857 .close = omap_vout_vm_close,
858 };
859
860 static int omap_vout_mmap(struct file *file, struct vm_area_struct *vma)
861 {
862 int i;
863 void *pos;
864 unsigned long start = vma->vm_start;
865 unsigned long size = (vma->vm_end - vma->vm_start);
866 struct omap_vout_device *vout = file->private_data;
867 struct videobuf_queue *q = &vout->vbq;
868
869 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
870 " %s pgoff=0x%lx, start=0x%lx, end=0x%lx\n", __func__,
871 vma->vm_pgoff, vma->vm_start, vma->vm_end);
872
873 /* look for the buffer to map */
874 for (i = 0; i < VIDEO_MAX_FRAME; i++) {
875 if (NULL == q->bufs[i])
876 continue;
877 if (V4L2_MEMORY_MMAP != q->bufs[i]->memory)
878 continue;
879 if (q->bufs[i]->boff == (vma->vm_pgoff << PAGE_SHIFT))
880 break;
881 }
882
883 if (VIDEO_MAX_FRAME == i) {
884 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
885 "offset invalid [offset=0x%lx]\n",
886 (vma->vm_pgoff << PAGE_SHIFT));
887 return -EINVAL;
888 }
889 /* Check the size of the buffer */
890 if (size > vout->buffer_size) {
891 v4l2_err(&vout->vid_dev->v4l2_dev,
892 "insufficient memory [%lu] [%u]\n",
893 size, vout->buffer_size);
894 return -ENOMEM;
895 }
896
897 q->bufs[i]->baddr = vma->vm_start;
898
899 vma->vm_flags |= VM_RESERVED;
900 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
901 vma->vm_ops = &omap_vout_vm_ops;
902 vma->vm_private_data = (void *) vout;
903 pos = (void *)vout->buf_virt_addr[i];
904 vma->vm_pgoff = virt_to_phys((void *)pos) >> PAGE_SHIFT;
905 while (size > 0) {
906 unsigned long pfn;
907 pfn = virt_to_phys((void *) pos) >> PAGE_SHIFT;
908 if (remap_pfn_range(vma, start, pfn, PAGE_SIZE, PAGE_SHARED))
909 return -EAGAIN;
910 start += PAGE_SIZE;
911 pos += PAGE_SIZE;
912 size -= PAGE_SIZE;
913 }
914 vout->mmap_count++;
915 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
916
917 return 0;
918 }
919
920 static int omap_vout_release(struct file *file)
921 {
922 unsigned int ret, i;
923 struct videobuf_queue *q;
924 struct omapvideo_info *ovid;
925 struct omap_vout_device *vout = file->private_data;
926
927 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
928 ovid = &vout->vid_info;
929
930 if (!vout)
931 return 0;
932
933 q = &vout->vbq;
934 /* Disable all the overlay managers connected with this interface */
935 for (i = 0; i < ovid->num_overlays; i++) {
936 struct omap_overlay *ovl = ovid->overlays[i];
937 if (ovl->manager && ovl->manager->device) {
938 struct omap_overlay_info info;
939 ovl->get_overlay_info(ovl, &info);
940 info.enabled = 0;
941 ovl->set_overlay_info(ovl, &info);
942 }
943 }
944 /* Turn off the pipeline */
945 ret = omapvid_apply_changes(vout);
946 if (ret)
947 v4l2_warn(&vout->vid_dev->v4l2_dev,
948 "Unable to apply changes\n");
949
950 /* Free all buffers */
951 omap_vout_free_extra_buffers(vout);
952
953 /* Free the VRFB buffers only if they are allocated
954 * during reqbufs. Don't free if init time allocated
955 */
956 if (ovid->rotation_type == VOUT_ROT_VRFB) {
957 if (!vout->vrfb_static_allocation)
958 omap_vout_free_vrfb_buffers(vout);
959 }
960 videobuf_mmap_free(q);
961
962 /* Even if apply changes fails we should continue
963 freeing allocated memory */
964 if (vout->streaming) {
965 u32 mask = 0;
966
967 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN |
968 DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_VSYNC2;
969 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
970 vout->streaming = 0;
971
972 videobuf_streamoff(q);
973 videobuf_queue_cancel(q);
974 }
975
976 if (vout->mmap_count != 0)
977 vout->mmap_count = 0;
978
979 vout->opened -= 1;
980 file->private_data = NULL;
981
982 if (vout->buffer_allocated)
983 videobuf_mmap_free(q);
984
985 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
986 return ret;
987 }
988
989 static int omap_vout_open(struct file *file)
990 {
991 struct videobuf_queue *q;
992 struct omap_vout_device *vout = NULL;
993
994 vout = video_drvdata(file);
995 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
996
997 if (vout == NULL)
998 return -ENODEV;
999
1000 /* for now, we only support single open */
1001 if (vout->opened)
1002 return -EBUSY;
1003
1004 vout->opened += 1;
1005
1006 file->private_data = vout;
1007 vout->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1008
1009 q = &vout->vbq;
1010 video_vbq_ops.buf_setup = omap_vout_buffer_setup;
1011 video_vbq_ops.buf_prepare = omap_vout_buffer_prepare;
1012 video_vbq_ops.buf_release = omap_vout_buffer_release;
1013 video_vbq_ops.buf_queue = omap_vout_buffer_queue;
1014 spin_lock_init(&vout->vbq_lock);
1015
1016 videobuf_queue_dma_contig_init(q, &video_vbq_ops, q->dev,
1017 &vout->vbq_lock, vout->type, V4L2_FIELD_NONE,
1018 sizeof(struct videobuf_buffer), vout, NULL);
1019
1020 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1021 return 0;
1022 }
1023
1024 /*
1025 * V4L2 ioctls
1026 */
1027 static int vidioc_querycap(struct file *file, void *fh,
1028 struct v4l2_capability *cap)
1029 {
1030 struct omap_vout_device *vout = fh;
1031
1032 strlcpy(cap->driver, VOUT_NAME, sizeof(cap->driver));
1033 strlcpy(cap->card, vout->vfd->name, sizeof(cap->card));
1034 cap->bus_info[0] = '\0';
1035 cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_OUTPUT;
1036
1037 return 0;
1038 }
1039
1040 static int vidioc_enum_fmt_vid_out(struct file *file, void *fh,
1041 struct v4l2_fmtdesc *fmt)
1042 {
1043 int index = fmt->index;
1044
1045 if (index >= NUM_OUTPUT_FORMATS)
1046 return -EINVAL;
1047
1048 fmt->flags = omap_formats[index].flags;
1049 strlcpy(fmt->description, omap_formats[index].description,
1050 sizeof(fmt->description));
1051 fmt->pixelformat = omap_formats[index].pixelformat;
1052
1053 return 0;
1054 }
1055
1056 static int vidioc_g_fmt_vid_out(struct file *file, void *fh,
1057 struct v4l2_format *f)
1058 {
1059 struct omap_vout_device *vout = fh;
1060
1061 f->fmt.pix = vout->pix;
1062 return 0;
1063
1064 }
1065
1066 static int vidioc_try_fmt_vid_out(struct file *file, void *fh,
1067 struct v4l2_format *f)
1068 {
1069 struct omap_overlay *ovl;
1070 struct omapvideo_info *ovid;
1071 struct omap_video_timings *timing;
1072 struct omap_vout_device *vout = fh;
1073
1074 ovid = &vout->vid_info;
1075 ovl = ovid->overlays[0];
1076
1077 if (!ovl->manager || !ovl->manager->device)
1078 return -EINVAL;
1079 /* get the display device attached to the overlay */
1080 timing = &ovl->manager->device->panel.timings;
1081
1082 vout->fbuf.fmt.height = timing->y_res;
1083 vout->fbuf.fmt.width = timing->x_res;
1084
1085 omap_vout_try_format(&f->fmt.pix);
1086 return 0;
1087 }
1088
1089 static int vidioc_s_fmt_vid_out(struct file *file, void *fh,
1090 struct v4l2_format *f)
1091 {
1092 int ret, bpp;
1093 struct omap_overlay *ovl;
1094 struct omapvideo_info *ovid;
1095 struct omap_video_timings *timing;
1096 struct omap_vout_device *vout = fh;
1097
1098 if (vout->streaming)
1099 return -EBUSY;
1100
1101 mutex_lock(&vout->lock);
1102
1103 ovid = &vout->vid_info;
1104 ovl = ovid->overlays[0];
1105
1106 /* get the display device attached to the overlay */
1107 if (!ovl->manager || !ovl->manager->device) {
1108 ret = -EINVAL;
1109 goto s_fmt_vid_out_exit;
1110 }
1111 timing = &ovl->manager->device->panel.timings;
1112
1113 /* We dont support RGB24-packed mode if vrfb rotation
1114 * is enabled*/
1115 if ((is_rotation_enabled(vout)) &&
1116 f->fmt.pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1117 ret = -EINVAL;
1118 goto s_fmt_vid_out_exit;
1119 }
1120
1121 /* get the framebuffer parameters */
1122
1123 if (is_rotation_90_or_270(vout)) {
1124 vout->fbuf.fmt.height = timing->x_res;
1125 vout->fbuf.fmt.width = timing->y_res;
1126 } else {
1127 vout->fbuf.fmt.height = timing->y_res;
1128 vout->fbuf.fmt.width = timing->x_res;
1129 }
1130
1131 /* change to samller size is OK */
1132
1133 bpp = omap_vout_try_format(&f->fmt.pix);
1134 f->fmt.pix.sizeimage = f->fmt.pix.width * f->fmt.pix.height * bpp;
1135
1136 /* try & set the new output format */
1137 vout->bpp = bpp;
1138 vout->pix = f->fmt.pix;
1139 vout->vrfb_bpp = 1;
1140
1141 /* If YUYV then vrfb bpp is 2, for others its 1 */
1142 if (V4L2_PIX_FMT_YUYV == vout->pix.pixelformat ||
1143 V4L2_PIX_FMT_UYVY == vout->pix.pixelformat)
1144 vout->vrfb_bpp = 2;
1145
1146 /* set default crop and win */
1147 omap_vout_new_format(&vout->pix, &vout->fbuf, &vout->crop, &vout->win);
1148
1149 /* Save the changes in the overlay strcuture */
1150 ret = omapvid_init(vout, 0);
1151 if (ret) {
1152 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1153 goto s_fmt_vid_out_exit;
1154 }
1155
1156 ret = 0;
1157
1158 s_fmt_vid_out_exit:
1159 mutex_unlock(&vout->lock);
1160 return ret;
1161 }
1162
1163 static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh,
1164 struct v4l2_format *f)
1165 {
1166 int ret = 0;
1167 struct omap_vout_device *vout = fh;
1168 struct v4l2_window *win = &f->fmt.win;
1169
1170 ret = omap_vout_try_window(&vout->fbuf, win);
1171
1172 if (!ret) {
1173 if (vout->vid == OMAP_VIDEO1)
1174 win->global_alpha = 255;
1175 else
1176 win->global_alpha = f->fmt.win.global_alpha;
1177 }
1178
1179 return ret;
1180 }
1181
1182 static int vidioc_s_fmt_vid_overlay(struct file *file, void *fh,
1183 struct v4l2_format *f)
1184 {
1185 int ret = 0;
1186 struct omap_overlay *ovl;
1187 struct omapvideo_info *ovid;
1188 struct omap_vout_device *vout = fh;
1189 struct v4l2_window *win = &f->fmt.win;
1190
1191 mutex_lock(&vout->lock);
1192 ovid = &vout->vid_info;
1193 ovl = ovid->overlays[0];
1194
1195 ret = omap_vout_new_window(&vout->crop, &vout->win, &vout->fbuf, win);
1196 if (!ret) {
1197 /* Video1 plane does not support global alpha */
1198 if (ovl->id == OMAP_DSS_VIDEO1)
1199 vout->win.global_alpha = 255;
1200 else
1201 vout->win.global_alpha = f->fmt.win.global_alpha;
1202
1203 vout->win.chromakey = f->fmt.win.chromakey;
1204 }
1205 mutex_unlock(&vout->lock);
1206 return ret;
1207 }
1208
1209 static int vidioc_enum_fmt_vid_overlay(struct file *file, void *fh,
1210 struct v4l2_fmtdesc *fmt)
1211 {
1212 int index = fmt->index;
1213
1214 if (index >= NUM_OUTPUT_FORMATS)
1215 return -EINVAL;
1216
1217 fmt->flags = omap_formats[index].flags;
1218 strlcpy(fmt->description, omap_formats[index].description,
1219 sizeof(fmt->description));
1220 fmt->pixelformat = omap_formats[index].pixelformat;
1221 return 0;
1222 }
1223
1224 static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh,
1225 struct v4l2_format *f)
1226 {
1227 u32 key_value = 0;
1228 struct omap_overlay *ovl;
1229 struct omapvideo_info *ovid;
1230 struct omap_vout_device *vout = fh;
1231 struct omap_overlay_manager_info info;
1232 struct v4l2_window *win = &f->fmt.win;
1233
1234 ovid = &vout->vid_info;
1235 ovl = ovid->overlays[0];
1236
1237 win->w = vout->win.w;
1238 win->field = vout->win.field;
1239 win->global_alpha = vout->win.global_alpha;
1240
1241 if (ovl->manager && ovl->manager->get_manager_info) {
1242 ovl->manager->get_manager_info(ovl->manager, &info);
1243 key_value = info.trans_key;
1244 }
1245 win->chromakey = key_value;
1246 return 0;
1247 }
1248
1249 static int vidioc_cropcap(struct file *file, void *fh,
1250 struct v4l2_cropcap *cropcap)
1251 {
1252 struct omap_vout_device *vout = fh;
1253 struct v4l2_pix_format *pix = &vout->pix;
1254
1255 if (cropcap->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1256 return -EINVAL;
1257
1258 /* Width and height are always even */
1259 cropcap->bounds.width = pix->width & ~1;
1260 cropcap->bounds.height = pix->height & ~1;
1261
1262 omap_vout_default_crop(&vout->pix, &vout->fbuf, &cropcap->defrect);
1263 cropcap->pixelaspect.numerator = 1;
1264 cropcap->pixelaspect.denominator = 1;
1265 return 0;
1266 }
1267
1268 static int vidioc_g_crop(struct file *file, void *fh, struct v4l2_crop *crop)
1269 {
1270 struct omap_vout_device *vout = fh;
1271
1272 if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1273 return -EINVAL;
1274 crop->c = vout->crop;
1275 return 0;
1276 }
1277
1278 static int vidioc_s_crop(struct file *file, void *fh, struct v4l2_crop *crop)
1279 {
1280 int ret = -EINVAL;
1281 struct omap_vout_device *vout = fh;
1282 struct omapvideo_info *ovid;
1283 struct omap_overlay *ovl;
1284 struct omap_video_timings *timing;
1285
1286 if (vout->streaming)
1287 return -EBUSY;
1288
1289 mutex_lock(&vout->lock);
1290 ovid = &vout->vid_info;
1291 ovl = ovid->overlays[0];
1292
1293 if (!ovl->manager || !ovl->manager->device) {
1294 ret = -EINVAL;
1295 goto s_crop_err;
1296 }
1297 /* get the display device attached to the overlay */
1298 timing = &ovl->manager->device->panel.timings;
1299
1300 if (is_rotation_90_or_270(vout)) {
1301 vout->fbuf.fmt.height = timing->x_res;
1302 vout->fbuf.fmt.width = timing->y_res;
1303 } else {
1304 vout->fbuf.fmt.height = timing->y_res;
1305 vout->fbuf.fmt.width = timing->x_res;
1306 }
1307
1308 if (crop->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1309 ret = omap_vout_new_crop(&vout->pix, &vout->crop, &vout->win,
1310 &vout->fbuf, &crop->c);
1311
1312 s_crop_err:
1313 mutex_unlock(&vout->lock);
1314 return ret;
1315 }
1316
1317 static int vidioc_queryctrl(struct file *file, void *fh,
1318 struct v4l2_queryctrl *ctrl)
1319 {
1320 int ret = 0;
1321
1322 switch (ctrl->id) {
1323 case V4L2_CID_ROTATE:
1324 ret = v4l2_ctrl_query_fill(ctrl, 0, 270, 90, 0);
1325 break;
1326 case V4L2_CID_BG_COLOR:
1327 ret = v4l2_ctrl_query_fill(ctrl, 0, 0xFFFFFF, 1, 0);
1328 break;
1329 case V4L2_CID_VFLIP:
1330 ret = v4l2_ctrl_query_fill(ctrl, 0, 1, 1, 0);
1331 break;
1332 default:
1333 ctrl->name[0] = '\0';
1334 ret = -EINVAL;
1335 }
1336 return ret;
1337 }
1338
1339 static int vidioc_g_ctrl(struct file *file, void *fh, struct v4l2_control *ctrl)
1340 {
1341 int ret = 0;
1342 struct omap_vout_device *vout = fh;
1343
1344 switch (ctrl->id) {
1345 case V4L2_CID_ROTATE:
1346 ctrl->value = vout->control[0].value;
1347 break;
1348 case V4L2_CID_BG_COLOR:
1349 {
1350 struct omap_overlay_manager_info info;
1351 struct omap_overlay *ovl;
1352
1353 ovl = vout->vid_info.overlays[0];
1354 if (!ovl->manager || !ovl->manager->get_manager_info) {
1355 ret = -EINVAL;
1356 break;
1357 }
1358
1359 ovl->manager->get_manager_info(ovl->manager, &info);
1360 ctrl->value = info.default_color;
1361 break;
1362 }
1363 case V4L2_CID_VFLIP:
1364 ctrl->value = vout->control[2].value;
1365 break;
1366 default:
1367 ret = -EINVAL;
1368 }
1369 return ret;
1370 }
1371
1372 static int vidioc_s_ctrl(struct file *file, void *fh, struct v4l2_control *a)
1373 {
1374 int ret = 0;
1375 struct omap_vout_device *vout = fh;
1376
1377 switch (a->id) {
1378 case V4L2_CID_ROTATE:
1379 {
1380 struct omapvideo_info *ovid;
1381 int rotation = a->value;
1382
1383 ovid = &vout->vid_info;
1384
1385 mutex_lock(&vout->lock);
1386 if (rotation && ovid->rotation_type == VOUT_ROT_NONE) {
1387 mutex_unlock(&vout->lock);
1388 ret = -ERANGE;
1389 break;
1390 }
1391
1392 if (rotation && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1393 mutex_unlock(&vout->lock);
1394 ret = -EINVAL;
1395 break;
1396 }
1397
1398 if (v4l2_rot_to_dss_rot(rotation, &vout->rotation,
1399 vout->mirror)) {
1400 mutex_unlock(&vout->lock);
1401 ret = -EINVAL;
1402 break;
1403 }
1404
1405 vout->control[0].value = rotation;
1406 mutex_unlock(&vout->lock);
1407 break;
1408 }
1409 case V4L2_CID_BG_COLOR:
1410 {
1411 struct omap_overlay *ovl;
1412 unsigned int color = a->value;
1413 struct omap_overlay_manager_info info;
1414
1415 ovl = vout->vid_info.overlays[0];
1416
1417 mutex_lock(&vout->lock);
1418 if (!ovl->manager || !ovl->manager->get_manager_info) {
1419 mutex_unlock(&vout->lock);
1420 ret = -EINVAL;
1421 break;
1422 }
1423
1424 ovl->manager->get_manager_info(ovl->manager, &info);
1425 info.default_color = color;
1426 if (ovl->manager->set_manager_info(ovl->manager, &info)) {
1427 mutex_unlock(&vout->lock);
1428 ret = -EINVAL;
1429 break;
1430 }
1431
1432 vout->control[1].value = color;
1433 mutex_unlock(&vout->lock);
1434 break;
1435 }
1436 case V4L2_CID_VFLIP:
1437 {
1438 struct omap_overlay *ovl;
1439 struct omapvideo_info *ovid;
1440 unsigned int mirror = a->value;
1441
1442 ovid = &vout->vid_info;
1443 ovl = ovid->overlays[0];
1444
1445 mutex_lock(&vout->lock);
1446 if (mirror && ovid->rotation_type == VOUT_ROT_NONE) {
1447 mutex_unlock(&vout->lock);
1448 ret = -ERANGE;
1449 break;
1450 }
1451
1452 if (mirror && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1453 mutex_unlock(&vout->lock);
1454 ret = -EINVAL;
1455 break;
1456 }
1457 vout->mirror = mirror;
1458 vout->control[2].value = mirror;
1459 mutex_unlock(&vout->lock);
1460 break;
1461 }
1462 default:
1463 ret = -EINVAL;
1464 }
1465 return ret;
1466 }
1467
1468 static int vidioc_reqbufs(struct file *file, void *fh,
1469 struct v4l2_requestbuffers *req)
1470 {
1471 int ret = 0;
1472 unsigned int i, num_buffers = 0;
1473 struct omap_vout_device *vout = fh;
1474 struct videobuf_queue *q = &vout->vbq;
1475
1476 if ((req->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) || (req->count < 0))
1477 return -EINVAL;
1478 /* if memory is not mmp or userptr
1479 return error */
1480 if ((V4L2_MEMORY_MMAP != req->memory) &&
1481 (V4L2_MEMORY_USERPTR != req->memory))
1482 return -EINVAL;
1483
1484 mutex_lock(&vout->lock);
1485 /* Cannot be requested when streaming is on */
1486 if (vout->streaming) {
1487 ret = -EBUSY;
1488 goto reqbuf_err;
1489 }
1490
1491 /* If buffers are already allocated free them */
1492 if (q->bufs[0] && (V4L2_MEMORY_MMAP == q->bufs[0]->memory)) {
1493 if (vout->mmap_count) {
1494 ret = -EBUSY;
1495 goto reqbuf_err;
1496 }
1497 num_buffers = (vout->vid == OMAP_VIDEO1) ?
1498 video1_numbuffers : video2_numbuffers;
1499 for (i = num_buffers; i < vout->buffer_allocated; i++) {
1500 omap_vout_free_buffer(vout->buf_virt_addr[i],
1501 vout->buffer_size);
1502 vout->buf_virt_addr[i] = 0;
1503 vout->buf_phy_addr[i] = 0;
1504 }
1505 vout->buffer_allocated = num_buffers;
1506 videobuf_mmap_free(q);
1507 } else if (q->bufs[0] && (V4L2_MEMORY_USERPTR == q->bufs[0]->memory)) {
1508 if (vout->buffer_allocated) {
1509 videobuf_mmap_free(q);
1510 for (i = 0; i < vout->buffer_allocated; i++) {
1511 kfree(q->bufs[i]);
1512 q->bufs[i] = NULL;
1513 }
1514 vout->buffer_allocated = 0;
1515 }
1516 }
1517
1518 /*store the memory type in data structure */
1519 vout->memory = req->memory;
1520
1521 INIT_LIST_HEAD(&vout->dma_queue);
1522
1523 /* call videobuf_reqbufs api */
1524 ret = videobuf_reqbufs(q, req);
1525 if (ret < 0)
1526 goto reqbuf_err;
1527
1528 vout->buffer_allocated = req->count;
1529
1530 reqbuf_err:
1531 mutex_unlock(&vout->lock);
1532 return ret;
1533 }
1534
1535 static int vidioc_querybuf(struct file *file, void *fh,
1536 struct v4l2_buffer *b)
1537 {
1538 struct omap_vout_device *vout = fh;
1539
1540 return videobuf_querybuf(&vout->vbq, b);
1541 }
1542
1543 static int vidioc_qbuf(struct file *file, void *fh,
1544 struct v4l2_buffer *buffer)
1545 {
1546 struct omap_vout_device *vout = fh;
1547 struct videobuf_queue *q = &vout->vbq;
1548
1549 if ((V4L2_BUF_TYPE_VIDEO_OUTPUT != buffer->type) ||
1550 (buffer->index >= vout->buffer_allocated) ||
1551 (q->bufs[buffer->index]->memory != buffer->memory)) {
1552 return -EINVAL;
1553 }
1554 if (V4L2_MEMORY_USERPTR == buffer->memory) {
1555 if ((buffer->length < vout->pix.sizeimage) ||
1556 (0 == buffer->m.userptr)) {
1557 return -EINVAL;
1558 }
1559 }
1560
1561 if ((is_rotation_enabled(vout)) &&
1562 vout->vrfb_dma_tx.req_status == DMA_CHAN_NOT_ALLOTED) {
1563 v4l2_warn(&vout->vid_dev->v4l2_dev,
1564 "DMA Channel not allocated for Rotation\n");
1565 return -EINVAL;
1566 }
1567
1568 return videobuf_qbuf(q, buffer);
1569 }
1570
1571 static int vidioc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *b)
1572 {
1573 struct omap_vout_device *vout = fh;
1574 struct videobuf_queue *q = &vout->vbq;
1575
1576 int ret;
1577 u32 addr;
1578 unsigned long size;
1579 struct videobuf_buffer *vb;
1580
1581 vb = q->bufs[b->index];
1582
1583 if (!vout->streaming)
1584 return -EINVAL;
1585
1586 if (file->f_flags & O_NONBLOCK)
1587 /* Call videobuf_dqbuf for non blocking mode */
1588 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 1);
1589 else
1590 /* Call videobuf_dqbuf for blocking mode */
1591 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 0);
1592
1593 addr = (unsigned long) vout->buf_phy_addr[vb->i];
1594 size = (unsigned long) vb->size;
1595 dma_unmap_single(vout->vid_dev->v4l2_dev.dev, addr,
1596 size, DMA_TO_DEVICE);
1597 return ret;
1598 }
1599
1600 static int vidioc_streamon(struct file *file, void *fh, enum v4l2_buf_type i)
1601 {
1602 int ret = 0, j;
1603 u32 addr = 0, mask = 0;
1604 struct omap_vout_device *vout = fh;
1605 struct videobuf_queue *q = &vout->vbq;
1606 struct omapvideo_info *ovid = &vout->vid_info;
1607
1608 mutex_lock(&vout->lock);
1609
1610 if (vout->streaming) {
1611 ret = -EBUSY;
1612 goto streamon_err;
1613 }
1614
1615 ret = videobuf_streamon(q);
1616 if (ret)
1617 goto streamon_err;
1618
1619 if (list_empty(&vout->dma_queue)) {
1620 ret = -EIO;
1621 goto streamon_err1;
1622 }
1623
1624 /* Get the next frame from the buffer queue */
1625 vout->next_frm = vout->cur_frm = list_entry(vout->dma_queue.next,
1626 struct videobuf_buffer, queue);
1627 /* Remove buffer from the buffer queue */
1628 list_del(&vout->cur_frm->queue);
1629 /* Mark state of the current frame to active */
1630 vout->cur_frm->state = VIDEOBUF_ACTIVE;
1631 /* Initialize field_id and started member */
1632 vout->field_id = 0;
1633
1634 /* set flag here. Next QBUF will start DMA */
1635 vout->streaming = 1;
1636
1637 vout->first_int = 1;
1638
1639 if (omap_vout_calculate_offset(vout)) {
1640 ret = -EINVAL;
1641 goto streamon_err1;
1642 }
1643 addr = (unsigned long) vout->queued_buf_addr[vout->cur_frm->i]
1644 + vout->cropped_offset;
1645
1646 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1647 | DISPC_IRQ_VSYNC2;
1648
1649 omap_dispc_register_isr(omap_vout_isr, vout, mask);
1650
1651 for (j = 0; j < ovid->num_overlays; j++) {
1652 struct omap_overlay *ovl = ovid->overlays[j];
1653
1654 if (ovl->manager && ovl->manager->device) {
1655 struct omap_overlay_info info;
1656 ovl->get_overlay_info(ovl, &info);
1657 info.enabled = 1;
1658 info.paddr = addr;
1659 if (ovl->set_overlay_info(ovl, &info)) {
1660 ret = -EINVAL;
1661 goto streamon_err1;
1662 }
1663 }
1664 }
1665
1666 /* First save the configuration in ovelray structure */
1667 ret = omapvid_init(vout, addr);
1668 if (ret)
1669 v4l2_err(&vout->vid_dev->v4l2_dev,
1670 "failed to set overlay info\n");
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 ret = 0;
1677
1678 streamon_err1:
1679 if (ret)
1680 ret = videobuf_streamoff(q);
1681 streamon_err:
1682 mutex_unlock(&vout->lock);
1683 return ret;
1684 }
1685
1686 static int vidioc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i)
1687 {
1688 u32 mask = 0;
1689 int ret = 0, j;
1690 struct omap_vout_device *vout = fh;
1691 struct omapvideo_info *ovid = &vout->vid_info;
1692
1693 if (!vout->streaming)
1694 return -EINVAL;
1695
1696 vout->streaming = 0;
1697 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1698 | DISPC_IRQ_VSYNC2;
1699
1700 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
1701
1702 for (j = 0; j < ovid->num_overlays; j++) {
1703 struct omap_overlay *ovl = ovid->overlays[j];
1704
1705 if (ovl->manager && ovl->manager->device) {
1706 struct omap_overlay_info info;
1707
1708 ovl->get_overlay_info(ovl, &info);
1709 info.enabled = 0;
1710 ret = ovl->set_overlay_info(ovl, &info);
1711 if (ret)
1712 v4l2_err(&vout->vid_dev->v4l2_dev,
1713 "failed to update overlay info in streamoff\n");
1714 }
1715 }
1716
1717 /* Turn of the pipeline */
1718 ret = omapvid_apply_changes(vout);
1719 if (ret)
1720 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode in"
1721 " streamoff\n");
1722
1723 INIT_LIST_HEAD(&vout->dma_queue);
1724 ret = videobuf_streamoff(&vout->vbq);
1725
1726 return ret;
1727 }
1728
1729 static int vidioc_s_fbuf(struct file *file, void *fh,
1730 struct v4l2_framebuffer *a)
1731 {
1732 int enable = 0;
1733 struct omap_overlay *ovl;
1734 struct omapvideo_info *ovid;
1735 struct omap_vout_device *vout = fh;
1736 struct omap_overlay_manager_info info;
1737 enum omap_dss_trans_key_type key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1738
1739 ovid = &vout->vid_info;
1740 ovl = ovid->overlays[0];
1741
1742 /* OMAP DSS doesn't support Source and Destination color
1743 key together */
1744 if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY) &&
1745 (a->flags & V4L2_FBUF_FLAG_CHROMAKEY))
1746 return -EINVAL;
1747 /* OMAP DSS Doesn't support the Destination color key
1748 and alpha blending together */
1749 if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY) &&
1750 (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA))
1751 return -EINVAL;
1752
1753 if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY)) {
1754 vout->fbuf.flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1755 key_type = OMAP_DSS_COLOR_KEY_VID_SRC;
1756 } else
1757 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1758
1759 if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY)) {
1760 vout->fbuf.flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1761 key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1762 } else
1763 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_CHROMAKEY;
1764
1765 if (a->flags & (V4L2_FBUF_FLAG_CHROMAKEY |
1766 V4L2_FBUF_FLAG_SRC_CHROMAKEY))
1767 enable = 1;
1768 else
1769 enable = 0;
1770 if (ovl->manager && ovl->manager->get_manager_info &&
1771 ovl->manager->set_manager_info) {
1772
1773 ovl->manager->get_manager_info(ovl->manager, &info);
1774 info.trans_enabled = enable;
1775 info.trans_key_type = key_type;
1776 info.trans_key = vout->win.chromakey;
1777
1778 if (ovl->manager->set_manager_info(ovl->manager, &info))
1779 return -EINVAL;
1780 }
1781 if (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA) {
1782 vout->fbuf.flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1783 enable = 1;
1784 } else {
1785 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_LOCAL_ALPHA;
1786 enable = 0;
1787 }
1788 if (ovl->manager && ovl->manager->get_manager_info &&
1789 ovl->manager->set_manager_info) {
1790 ovl->manager->get_manager_info(ovl->manager, &info);
1791 info.alpha_enabled = enable;
1792 if (ovl->manager->set_manager_info(ovl->manager, &info))
1793 return -EINVAL;
1794 }
1795
1796 return 0;
1797 }
1798
1799 static int vidioc_g_fbuf(struct file *file, void *fh,
1800 struct v4l2_framebuffer *a)
1801 {
1802 struct omap_overlay *ovl;
1803 struct omapvideo_info *ovid;
1804 struct omap_vout_device *vout = fh;
1805 struct omap_overlay_manager_info info;
1806
1807 ovid = &vout->vid_info;
1808 ovl = ovid->overlays[0];
1809
1810 a->flags = 0x0;
1811 a->capability = V4L2_FBUF_CAP_LOCAL_ALPHA | V4L2_FBUF_CAP_CHROMAKEY
1812 | V4L2_FBUF_CAP_SRC_CHROMAKEY;
1813
1814 if (ovl->manager && ovl->manager->get_manager_info) {
1815 ovl->manager->get_manager_info(ovl->manager, &info);
1816 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_VID_SRC)
1817 a->flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1818 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_GFX_DST)
1819 a->flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1820 }
1821 if (ovl->manager && ovl->manager->get_manager_info) {
1822 ovl->manager->get_manager_info(ovl->manager, &info);
1823 if (info.alpha_enabled)
1824 a->flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1825 }
1826
1827 return 0;
1828 }
1829
1830 static const struct v4l2_ioctl_ops vout_ioctl_ops = {
1831 .vidioc_querycap = vidioc_querycap,
1832 .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out,
1833 .vidioc_g_fmt_vid_out = vidioc_g_fmt_vid_out,
1834 .vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out,
1835 .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out,
1836 .vidioc_queryctrl = vidioc_queryctrl,
1837 .vidioc_g_ctrl = vidioc_g_ctrl,
1838 .vidioc_s_fbuf = vidioc_s_fbuf,
1839 .vidioc_g_fbuf = vidioc_g_fbuf,
1840 .vidioc_s_ctrl = vidioc_s_ctrl,
1841 .vidioc_try_fmt_vid_overlay = vidioc_try_fmt_vid_overlay,
1842 .vidioc_s_fmt_vid_overlay = vidioc_s_fmt_vid_overlay,
1843 .vidioc_enum_fmt_vid_overlay = vidioc_enum_fmt_vid_overlay,
1844 .vidioc_g_fmt_vid_overlay = vidioc_g_fmt_vid_overlay,
1845 .vidioc_cropcap = vidioc_cropcap,
1846 .vidioc_g_crop = vidioc_g_crop,
1847 .vidioc_s_crop = vidioc_s_crop,
1848 .vidioc_reqbufs = vidioc_reqbufs,
1849 .vidioc_querybuf = vidioc_querybuf,
1850 .vidioc_qbuf = vidioc_qbuf,
1851 .vidioc_dqbuf = vidioc_dqbuf,
1852 .vidioc_streamon = vidioc_streamon,
1853 .vidioc_streamoff = vidioc_streamoff,
1854 };
1855
1856 static const struct v4l2_file_operations omap_vout_fops = {
1857 .owner = THIS_MODULE,
1858 .unlocked_ioctl = video_ioctl2,
1859 .mmap = omap_vout_mmap,
1860 .open = omap_vout_open,
1861 .release = omap_vout_release,
1862 };
1863
1864 /* Init functions used during driver initialization */
1865 /* Initial setup of video_data */
1866 static int __init omap_vout_setup_video_data(struct omap_vout_device *vout)
1867 {
1868 struct video_device *vfd;
1869 struct v4l2_pix_format *pix;
1870 struct v4l2_control *control;
1871 struct omap_dss_device *display =
1872 vout->vid_info.overlays[0]->manager->device;
1873
1874 /* set the default pix */
1875 pix = &vout->pix;
1876
1877 /* Set the default picture of QVGA */
1878 pix->width = QQVGA_WIDTH;
1879 pix->height = QQVGA_HEIGHT;
1880
1881 /* Default pixel format is RGB 5-6-5 */
1882 pix->pixelformat = V4L2_PIX_FMT_RGB565;
1883 pix->field = V4L2_FIELD_ANY;
1884 pix->bytesperline = pix->width * 2;
1885 pix->sizeimage = pix->bytesperline * pix->height;
1886 pix->priv = 0;
1887 pix->colorspace = V4L2_COLORSPACE_JPEG;
1888
1889 vout->bpp = RGB565_BPP;
1890 vout->fbuf.fmt.width = display->panel.timings.x_res;
1891 vout->fbuf.fmt.height = display->panel.timings.y_res;
1892
1893 /* Set the data structures for the overlay parameters*/
1894 vout->win.global_alpha = 255;
1895 vout->fbuf.flags = 0;
1896 vout->fbuf.capability = V4L2_FBUF_CAP_LOCAL_ALPHA |
1897 V4L2_FBUF_CAP_SRC_CHROMAKEY | V4L2_FBUF_CAP_CHROMAKEY;
1898 vout->win.chromakey = 0;
1899
1900 omap_vout_new_format(pix, &vout->fbuf, &vout->crop, &vout->win);
1901
1902 /*Initialize the control variables for
1903 rotation, flipping and background color. */
1904 control = vout->control;
1905 control[0].id = V4L2_CID_ROTATE;
1906 control[0].value = 0;
1907 vout->rotation = 0;
1908 vout->mirror = 0;
1909 vout->control[2].id = V4L2_CID_HFLIP;
1910 vout->control[2].value = 0;
1911 if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
1912 vout->vrfb_bpp = 2;
1913
1914 control[1].id = V4L2_CID_BG_COLOR;
1915 control[1].value = 0;
1916
1917 /* initialize the video_device struct */
1918 vfd = vout->vfd = video_device_alloc();
1919
1920 if (!vfd) {
1921 printk(KERN_ERR VOUT_NAME ": could not allocate"
1922 " video device struct\n");
1923 return -ENOMEM;
1924 }
1925 vfd->release = video_device_release;
1926 vfd->ioctl_ops = &vout_ioctl_ops;
1927
1928 strlcpy(vfd->name, VOUT_NAME, sizeof(vfd->name));
1929
1930 vfd->fops = &omap_vout_fops;
1931 vfd->v4l2_dev = &vout->vid_dev->v4l2_dev;
1932 mutex_init(&vout->lock);
1933
1934 vfd->minor = -1;
1935 return 0;
1936
1937 }
1938
1939 /* Setup video buffers */
1940 static int __init omap_vout_setup_video_bufs(struct platform_device *pdev,
1941 int vid_num)
1942 {
1943 u32 numbuffers;
1944 int ret = 0, i;
1945 struct omapvideo_info *ovid;
1946 struct omap_vout_device *vout;
1947 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1948 struct omap2video_device *vid_dev =
1949 container_of(v4l2_dev, struct omap2video_device, v4l2_dev);
1950
1951 vout = vid_dev->vouts[vid_num];
1952 ovid = &vout->vid_info;
1953
1954 numbuffers = (vid_num == 0) ? video1_numbuffers : video2_numbuffers;
1955 vout->buffer_size = (vid_num == 0) ? video1_bufsize : video2_bufsize;
1956 dev_info(&pdev->dev, "Buffer Size = %d\n", vout->buffer_size);
1957
1958 for (i = 0; i < numbuffers; i++) {
1959 vout->buf_virt_addr[i] =
1960 omap_vout_alloc_buffer(vout->buffer_size,
1961 (u32 *) &vout->buf_phy_addr[i]);
1962 if (!vout->buf_virt_addr[i]) {
1963 numbuffers = i;
1964 ret = -ENOMEM;
1965 goto free_buffers;
1966 }
1967 }
1968
1969 vout->cropped_offset = 0;
1970
1971 if (ovid->rotation_type == VOUT_ROT_VRFB) {
1972 int static_vrfb_allocation = (vid_num == 0) ?
1973 vid1_static_vrfb_alloc : vid2_static_vrfb_alloc;
1974 ret = omap_vout_setup_vrfb_bufs(pdev, vid_num,
1975 static_vrfb_allocation);
1976 }
1977
1978 return ret;
1979
1980 free_buffers:
1981 for (i = 0; i < numbuffers; i++) {
1982 omap_vout_free_buffer(vout->buf_virt_addr[i],
1983 vout->buffer_size);
1984 vout->buf_virt_addr[i] = 0;
1985 vout->buf_phy_addr[i] = 0;
1986 }
1987 return ret;
1988
1989 }
1990
1991 /* Create video out devices */
1992 static int __init omap_vout_create_video_devices(struct platform_device *pdev)
1993 {
1994 int ret = 0, k;
1995 struct omap_vout_device *vout;
1996 struct video_device *vfd = NULL;
1997 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1998 struct omap2video_device *vid_dev = container_of(v4l2_dev,
1999 struct omap2video_device, v4l2_dev);
2000
2001 for (k = 0; k < pdev->num_resources; k++) {
2002
2003 vout = kzalloc(sizeof(struct omap_vout_device), GFP_KERNEL);
2004 if (!vout) {
2005 dev_err(&pdev->dev, ": could not allocate memory\n");
2006 return -ENOMEM;
2007 }
2008
2009 vout->vid = k;
2010 vid_dev->vouts[k] = vout;
2011 vout->vid_dev = vid_dev;
2012 /* Select video2 if only 1 overlay is controlled by V4L2 */
2013 if (pdev->num_resources == 1)
2014 vout->vid_info.overlays[0] = vid_dev->overlays[k + 2];
2015 else
2016 /* Else select video1 and video2 one by one. */
2017 vout->vid_info.overlays[0] = vid_dev->overlays[k + 1];
2018 vout->vid_info.num_overlays = 1;
2019 vout->vid_info.id = k + 1;
2020
2021 /* Set VRFB as rotation_type for omap2 and omap3 */
2022 if (cpu_is_omap24xx() || cpu_is_omap34xx())
2023 vout->vid_info.rotation_type = VOUT_ROT_VRFB;
2024
2025 /* Setup the default configuration for the video devices
2026 */
2027 if (omap_vout_setup_video_data(vout) != 0) {
2028 ret = -ENOMEM;
2029 goto error;
2030 }
2031
2032 /* Allocate default number of buffers for the video streaming
2033 * and reserve the VRFB space for rotation
2034 */
2035 if (omap_vout_setup_video_bufs(pdev, k) != 0) {
2036 ret = -ENOMEM;
2037 goto error1;
2038 }
2039
2040 /* Register the Video device with V4L2
2041 */
2042 vfd = vout->vfd;
2043 if (video_register_device(vfd, VFL_TYPE_GRABBER, -1) < 0) {
2044 dev_err(&pdev->dev, ": Could not register "
2045 "Video for Linux device\n");
2046 vfd->minor = -1;
2047 ret = -ENODEV;
2048 goto error2;
2049 }
2050 video_set_drvdata(vfd, vout);
2051
2052 /* Configure the overlay structure */
2053 ret = omapvid_init(vid_dev->vouts[k], 0);
2054 if (!ret)
2055 goto success;
2056
2057 error2:
2058 if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
2059 omap_vout_release_vrfb(vout);
2060 omap_vout_free_buffers(vout);
2061 error1:
2062 video_device_release(vfd);
2063 error:
2064 kfree(vout);
2065 return ret;
2066
2067 success:
2068 dev_info(&pdev->dev, ": registered and initialized"
2069 " video device %d\n", vfd->minor);
2070 if (k == (pdev->num_resources - 1))
2071 return 0;
2072 }
2073
2074 return -ENODEV;
2075 }
2076 /* Driver functions */
2077 static void omap_vout_cleanup_device(struct omap_vout_device *vout)
2078 {
2079 struct video_device *vfd;
2080 struct omapvideo_info *ovid;
2081
2082 if (!vout)
2083 return;
2084
2085 vfd = vout->vfd;
2086 ovid = &vout->vid_info;
2087 if (vfd) {
2088 if (!video_is_registered(vfd)) {
2089 /*
2090 * The device was never registered, so release the
2091 * video_device struct directly.
2092 */
2093 video_device_release(vfd);
2094 } else {
2095 /*
2096 * The unregister function will release the video_device
2097 * struct as well as unregistering it.
2098 */
2099 video_unregister_device(vfd);
2100 }
2101 }
2102 if (ovid->rotation_type == VOUT_ROT_VRFB) {
2103 omap_vout_release_vrfb(vout);
2104 /* Free the VRFB buffer if allocated
2105 * init time
2106 */
2107 if (vout->vrfb_static_allocation)
2108 omap_vout_free_vrfb_buffers(vout);
2109 }
2110 omap_vout_free_buffers(vout);
2111
2112 kfree(vout);
2113 }
2114
2115 static int omap_vout_remove(struct platform_device *pdev)
2116 {
2117 int k;
2118 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2119 struct omap2video_device *vid_dev = container_of(v4l2_dev, struct
2120 omap2video_device, v4l2_dev);
2121
2122 v4l2_device_unregister(v4l2_dev);
2123 for (k = 0; k < pdev->num_resources; k++)
2124 omap_vout_cleanup_device(vid_dev->vouts[k]);
2125
2126 for (k = 0; k < vid_dev->num_displays; k++) {
2127 if (vid_dev->displays[k]->state != OMAP_DSS_DISPLAY_DISABLED)
2128 vid_dev->displays[k]->driver->disable(vid_dev->displays[k]);
2129
2130 omap_dss_put_device(vid_dev->displays[k]);
2131 }
2132 kfree(vid_dev);
2133 return 0;
2134 }
2135
2136 static int __init omap_vout_probe(struct platform_device *pdev)
2137 {
2138 int ret = 0, i;
2139 struct omap_overlay *ovl;
2140 struct omap_dss_device *dssdev = NULL;
2141 struct omap_dss_device *def_display;
2142 struct omap2video_device *vid_dev = NULL;
2143
2144 if (pdev->num_resources == 0) {
2145 dev_err(&pdev->dev, "probed for an unknown device\n");
2146 return -ENODEV;
2147 }
2148
2149 vid_dev = kzalloc(sizeof(struct omap2video_device), GFP_KERNEL);
2150 if (vid_dev == NULL)
2151 return -ENOMEM;
2152
2153 vid_dev->num_displays = 0;
2154 for_each_dss_dev(dssdev) {
2155 omap_dss_get_device(dssdev);
2156 vid_dev->displays[vid_dev->num_displays++] = dssdev;
2157 }
2158
2159 if (vid_dev->num_displays == 0) {
2160 dev_err(&pdev->dev, "no displays\n");
2161 ret = -EINVAL;
2162 goto probe_err0;
2163 }
2164
2165 vid_dev->num_overlays = omap_dss_get_num_overlays();
2166 for (i = 0; i < vid_dev->num_overlays; i++)
2167 vid_dev->overlays[i] = omap_dss_get_overlay(i);
2168
2169 vid_dev->num_managers = omap_dss_get_num_overlay_managers();
2170 for (i = 0; i < vid_dev->num_managers; i++)
2171 vid_dev->managers[i] = omap_dss_get_overlay_manager(i);
2172
2173 /* Get the Video1 overlay and video2 overlay.
2174 * Setup the Display attached to that overlays
2175 */
2176 for (i = 1; i < vid_dev->num_overlays; i++) {
2177 ovl = omap_dss_get_overlay(i);
2178 if (ovl->manager && ovl->manager->device) {
2179 def_display = ovl->manager->device;
2180 } else {
2181 dev_warn(&pdev->dev, "cannot find display\n");
2182 def_display = NULL;
2183 }
2184 if (def_display) {
2185 struct omap_dss_driver *dssdrv = def_display->driver;
2186
2187 ret = dssdrv->enable(def_display);
2188 if (ret) {
2189 /* Here we are not considering a error
2190 * as display may be enabled by frame
2191 * buffer driver
2192 */
2193 dev_warn(&pdev->dev,
2194 "'%s' Display already enabled\n",
2195 def_display->name);
2196 }
2197 /* set the update mode */
2198 if (def_display->caps &
2199 OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
2200 if (dssdrv->enable_te)
2201 dssdrv->enable_te(def_display, 0);
2202 if (dssdrv->set_update_mode)
2203 dssdrv->set_update_mode(def_display,
2204 OMAP_DSS_UPDATE_MANUAL);
2205 } else {
2206 if (dssdrv->set_update_mode)
2207 dssdrv->set_update_mode(def_display,
2208 OMAP_DSS_UPDATE_AUTO);
2209 }
2210 }
2211 }
2212
2213 if (v4l2_device_register(&pdev->dev, &vid_dev->v4l2_dev) < 0) {
2214 dev_err(&pdev->dev, "v4l2_device_register failed\n");
2215 ret = -ENODEV;
2216 goto probe_err1;
2217 }
2218
2219 ret = omap_vout_create_video_devices(pdev);
2220 if (ret)
2221 goto probe_err2;
2222
2223 for (i = 0; i < vid_dev->num_displays; i++) {
2224 struct omap_dss_device *display = vid_dev->displays[i];
2225
2226 if (display->driver->update)
2227 display->driver->update(display, 0, 0,
2228 display->panel.timings.x_res,
2229 display->panel.timings.y_res);
2230 }
2231 return 0;
2232
2233 probe_err2:
2234 v4l2_device_unregister(&vid_dev->v4l2_dev);
2235 probe_err1:
2236 for (i = 1; i < vid_dev->num_overlays; i++) {
2237 def_display = NULL;
2238 ovl = omap_dss_get_overlay(i);
2239 if (ovl->manager && ovl->manager->device)
2240 def_display = ovl->manager->device;
2241
2242 if (def_display && def_display->driver)
2243 def_display->driver->disable(def_display);
2244 }
2245 probe_err0:
2246 kfree(vid_dev);
2247 return ret;
2248 }
2249
2250 static struct platform_driver omap_vout_driver = {
2251 .driver = {
2252 .name = VOUT_NAME,
2253 },
2254 .probe = omap_vout_probe,
2255 .remove = omap_vout_remove,
2256 };
2257
2258 static int __init omap_vout_init(void)
2259 {
2260 if (platform_driver_register(&omap_vout_driver) != 0) {
2261 printk(KERN_ERR VOUT_NAME ":Could not register Video driver\n");
2262 return -EINVAL;
2263 }
2264 return 0;
2265 }
2266
2267 static void omap_vout_cleanup(void)
2268 {
2269 platform_driver_unregister(&omap_vout_driver);
2270 }
2271
2272 late_initcall(omap_vout_init);
2273 module_exit(omap_vout_cleanup);
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