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Avoid beyond bounds copy while caching ACL
[zen-stable.git] / drivers / media / video / omap / omap_vout.c
blob1fb7d5bd5ec26a3f8955e8a6cdc3e7a6cd3841f9
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 <plat/dma.h>
48 #include <plat/vrfb.h>
49 #include <video/omapdss.h>
50
51 #include "omap_voutlib.h"
52 #include "omap_voutdef.h"
53 #include "omap_vout_vrfb.h"
54
55 MODULE_AUTHOR("Texas Instruments");
56 MODULE_DESCRIPTION("OMAP Video for Linux Video out driver");
57 MODULE_LICENSE("GPL");
58
59 /* Driver Configuration macros */
60 #define VOUT_NAME "omap_vout"
61
62 enum omap_vout_channels {
63 OMAP_VIDEO1,
64 OMAP_VIDEO2,
65 };
66
67 static struct videobuf_queue_ops video_vbq_ops;
68 /* Variables configurable through module params*/
69 static u32 video1_numbuffers = 3;
70 static u32 video2_numbuffers = 3;
71 static u32 video1_bufsize = OMAP_VOUT_MAX_BUF_SIZE;
72 static u32 video2_bufsize = OMAP_VOUT_MAX_BUF_SIZE;
73 static bool vid1_static_vrfb_alloc;
74 static bool vid2_static_vrfb_alloc;
75 static bool debug;
76
77 /* Module parameters */
78 module_param(video1_numbuffers, uint, S_IRUGO);
79 MODULE_PARM_DESC(video1_numbuffers,
80 "Number of buffers to be allocated at init time for Video1 device.");
81
82 module_param(video2_numbuffers, uint, S_IRUGO);
83 MODULE_PARM_DESC(video2_numbuffers,
84 "Number of buffers to be allocated at init time for Video2 device.");
85
86 module_param(video1_bufsize, uint, S_IRUGO);
87 MODULE_PARM_DESC(video1_bufsize,
88 "Size of the buffer to be allocated for video1 device");
89
90 module_param(video2_bufsize, uint, S_IRUGO);
91 MODULE_PARM_DESC(video2_bufsize,
92 "Size of the buffer to be allocated for video2 device");
93
94 module_param(vid1_static_vrfb_alloc, bool, S_IRUGO);
95 MODULE_PARM_DESC(vid1_static_vrfb_alloc,
96 "Static allocation of the VRFB buffer for video1 device");
97
98 module_param(vid2_static_vrfb_alloc, bool, S_IRUGO);
99 MODULE_PARM_DESC(vid2_static_vrfb_alloc,
100 "Static allocation of the VRFB buffer for video2 device");
101
102 module_param(debug, bool, S_IRUGO);
103 MODULE_PARM_DESC(debug, "Debug level (0-1)");
104
105 /* list of image formats supported by OMAP2 video pipelines */
106 static const struct v4l2_fmtdesc omap_formats[] = {
107 {
108 /* Note: V4L2 defines RGB565 as:
109 *
110 * Byte 0 Byte 1
111 * g2 g1 g0 r4 r3 r2 r1 r0 b4 b3 b2 b1 b0 g5 g4 g3
112 *
113 * We interpret RGB565 as:
114 *
115 * Byte 0 Byte 1
116 * g2 g1 g0 b4 b3 b2 b1 b0 r4 r3 r2 r1 r0 g5 g4 g3
117 */
118 .description = "RGB565, le",
119 .pixelformat = V4L2_PIX_FMT_RGB565,
120 },
121 {
122 /* Note: V4L2 defines RGB32 as: RGB-8-8-8-8 we use
123 * this for RGB24 unpack mode, the last 8 bits are ignored
124 * */
125 .description = "RGB32, le",
126 .pixelformat = V4L2_PIX_FMT_RGB32,
127 },
128 {
129 /* Note: V4L2 defines RGB24 as: RGB-8-8-8 we use
130 * this for RGB24 packed mode
131 *
132 */
133 .description = "RGB24, le",
134 .pixelformat = V4L2_PIX_FMT_RGB24,
135 },
136 {
137 .description = "YUYV (YUV 4:2:2), packed",
138 .pixelformat = V4L2_PIX_FMT_YUYV,
139 },
140 {
141 .description = "UYVY, packed",
142 .pixelformat = V4L2_PIX_FMT_UYVY,
143 },
144 };
145
146 #define NUM_OUTPUT_FORMATS (ARRAY_SIZE(omap_formats))
147
148 /*
149 * Try format
150 */
151 static int omap_vout_try_format(struct v4l2_pix_format *pix)
152 {
153 int ifmt, bpp = 0;
154
155 pix->height = clamp(pix->height, (u32)VID_MIN_HEIGHT,
156 (u32)VID_MAX_HEIGHT);
157 pix->width = clamp(pix->width, (u32)VID_MIN_WIDTH, (u32)VID_MAX_WIDTH);
158
159 for (ifmt = 0; ifmt < NUM_OUTPUT_FORMATS; ifmt++) {
160 if (pix->pixelformat == omap_formats[ifmt].pixelformat)
161 break;
162 }
163
164 if (ifmt == NUM_OUTPUT_FORMATS)
165 ifmt = 0;
166
167 pix->pixelformat = omap_formats[ifmt].pixelformat;
168 pix->field = V4L2_FIELD_ANY;
169 pix->priv = 0;
170
171 switch (pix->pixelformat) {
172 case V4L2_PIX_FMT_YUYV:
173 case V4L2_PIX_FMT_UYVY:
174 default:
175 pix->colorspace = V4L2_COLORSPACE_JPEG;
176 bpp = YUYV_BPP;
177 break;
178 case V4L2_PIX_FMT_RGB565:
179 case V4L2_PIX_FMT_RGB565X:
180 pix->colorspace = V4L2_COLORSPACE_SRGB;
181 bpp = RGB565_BPP;
182 break;
183 case V4L2_PIX_FMT_RGB24:
184 pix->colorspace = V4L2_COLORSPACE_SRGB;
185 bpp = RGB24_BPP;
186 break;
187 case V4L2_PIX_FMT_RGB32:
188 case V4L2_PIX_FMT_BGR32:
189 pix->colorspace = V4L2_COLORSPACE_SRGB;
190 bpp = RGB32_BPP;
191 break;
192 }
193 pix->bytesperline = pix->width * bpp;
194 pix->sizeimage = pix->bytesperline * pix->height;
195
196 return bpp;
197 }
198
199 /*
200 * omap_vout_uservirt_to_phys: This inline function is used to convert user
201 * space virtual address to physical address.
202 */
203 static u32 omap_vout_uservirt_to_phys(u32 virtp)
204 {
205 unsigned long physp = 0;
206 struct vm_area_struct *vma;
207 struct mm_struct *mm = current->mm;
208
209 vma = find_vma(mm, virtp);
210 /* For kernel direct-mapped memory, take the easy way */
211 if (virtp >= PAGE_OFFSET) {
212 physp = virt_to_phys((void *) virtp);
213 } else 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 } else {
218 /* otherwise, use get_user_pages() for general userland pages */
219 int res, nr_pages = 1;
220 struct page *pages;
221 down_read(&current->mm->mmap_sem);
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 0:
338 break;
339 case V4L2_PIX_FMT_YUYV:
340 mode = OMAP_DSS_COLOR_YUV2;
341 break;
342 case V4L2_PIX_FMT_UYVY:
343 mode = OMAP_DSS_COLOR_UYVY;
344 break;
345 case V4L2_PIX_FMT_RGB565:
346 mode = OMAP_DSS_COLOR_RGB16;
347 break;
348 case V4L2_PIX_FMT_RGB24:
349 mode = OMAP_DSS_COLOR_RGB24P;
350 break;
351 case V4L2_PIX_FMT_RGB32:
352 mode = (ovl->id == OMAP_DSS_VIDEO1) ?
353 OMAP_DSS_COLOR_RGB24U : OMAP_DSS_COLOR_ARGB32;
354 break;
355 case V4L2_PIX_FMT_BGR32:
356 mode = OMAP_DSS_COLOR_RGBX32;
357 break;
358 default:
359 mode = -EINVAL;
360 }
361 return mode;
362 }
363
364 /*
365 * Setup the overlay
366 */
367 static int omapvid_setup_overlay(struct omap_vout_device *vout,
368 struct omap_overlay *ovl, int posx, int posy, int outw,
369 int outh, u32 addr)
370 {
371 int ret = 0;
372 struct omap_overlay_info info;
373 int cropheight, cropwidth, pixheight, pixwidth;
374
375 if ((ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0 &&
376 (outw != vout->pix.width || outh != vout->pix.height)) {
377 ret = -EINVAL;
378 goto setup_ovl_err;
379 }
380
381 vout->dss_mode = video_mode_to_dss_mode(vout);
382 if (vout->dss_mode == -EINVAL) {
383 ret = -EINVAL;
384 goto setup_ovl_err;
385 }
386
387 /* Setup the input plane parameters according to
388 * rotation value selected.
389 */
390 if (is_rotation_90_or_270(vout)) {
391 cropheight = vout->crop.width;
392 cropwidth = vout->crop.height;
393 pixheight = vout->pix.width;
394 pixwidth = vout->pix.height;
395 } else {
396 cropheight = vout->crop.height;
397 cropwidth = vout->crop.width;
398 pixheight = vout->pix.height;
399 pixwidth = vout->pix.width;
400 }
401
402 ovl->get_overlay_info(ovl, &info);
403 info.paddr = addr;
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__, ovl->is_enabled(ovl), 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 int omapvid_handle_interlace_display(struct omap_vout_device *vout,
528 unsigned int irqstatus, struct timeval timevalue)
529 {
530 u32 fid;
531
532 if (vout->first_int) {
533 vout->first_int = 0;
534 goto err;
535 }
536
537 if (irqstatus & DISPC_IRQ_EVSYNC_ODD)
538 fid = 1;
539 else if (irqstatus & DISPC_IRQ_EVSYNC_EVEN)
540 fid = 0;
541 else
542 goto err;
543
544 vout->field_id ^= 1;
545 if (fid != vout->field_id) {
546 if (fid == 0)
547 vout->field_id = fid;
548 } else if (0 == fid) {
549 if (vout->cur_frm == vout->next_frm)
550 goto err;
551
552 vout->cur_frm->ts = timevalue;
553 vout->cur_frm->state = VIDEOBUF_DONE;
554 wake_up_interruptible(&vout->cur_frm->done);
555 vout->cur_frm = vout->next_frm;
556 } else {
557 if (list_empty(&vout->dma_queue) ||
558 (vout->cur_frm != vout->next_frm))
559 goto err;
560 }
561
562 return vout->field_id;
563 err:
564 return 0;
565 }
566
567 static void omap_vout_isr(void *arg, unsigned int irqstatus)
568 {
569 int ret, fid, mgr_id;
570 u32 addr, irq;
571 struct omap_overlay *ovl;
572 struct timeval timevalue;
573 struct omapvideo_info *ovid;
574 struct omap_dss_device *cur_display;
575 struct omap_vout_device *vout = (struct omap_vout_device *)arg;
576
577 if (!vout->streaming)
578 return;
579
580 ovid = &vout->vid_info;
581 ovl = ovid->overlays[0];
582 /* get the display device attached to the overlay */
583 if (!ovl->manager || !ovl->manager->device)
584 return;
585
586 mgr_id = ovl->manager->id;
587 cur_display = ovl->manager->device;
588
589 spin_lock(&vout->vbq_lock);
590 do_gettimeofday(&timevalue);
591
592 switch (cur_display->type) {
593 case OMAP_DISPLAY_TYPE_DSI:
594 case OMAP_DISPLAY_TYPE_DPI:
595 if (mgr_id == OMAP_DSS_CHANNEL_LCD)
596 irq = DISPC_IRQ_VSYNC;
597 else if (mgr_id == OMAP_DSS_CHANNEL_LCD2)
598 irq = DISPC_IRQ_VSYNC2;
599 else
600 goto vout_isr_err;
601
602 if (!(irqstatus & irq))
603 goto vout_isr_err;
604 break;
605 case OMAP_DISPLAY_TYPE_VENC:
606 fid = omapvid_handle_interlace_display(vout, irqstatus,
607 timevalue);
608 if (!fid)
609 goto vout_isr_err;
610 break;
611 case OMAP_DISPLAY_TYPE_HDMI:
612 if (!(irqstatus & DISPC_IRQ_EVSYNC_EVEN))
613 goto vout_isr_err;
614 break;
615 default:
616 goto vout_isr_err;
617 }
618
619 if (!vout->first_int && (vout->cur_frm != vout->next_frm)) {
620 vout->cur_frm->ts = timevalue;
621 vout->cur_frm->state = VIDEOBUF_DONE;
622 wake_up_interruptible(&vout->cur_frm->done);
623 vout->cur_frm = vout->next_frm;
624 }
625
626 vout->first_int = 0;
627 if (list_empty(&vout->dma_queue))
628 goto vout_isr_err;
629
630 vout->next_frm = list_entry(vout->dma_queue.next,
631 struct videobuf_buffer, queue);
632 list_del(&vout->next_frm->queue);
633
634 vout->next_frm->state = VIDEOBUF_ACTIVE;
635
636 addr = (unsigned long) vout->queued_buf_addr[vout->next_frm->i]
637 + vout->cropped_offset;
638
639 /* First save the configuration in ovelray structure */
640 ret = omapvid_init(vout, addr);
641 if (ret)
642 printk(KERN_ERR VOUT_NAME
643 "failed to set overlay info\n");
644 /* Enable the pipeline and set the Go bit */
645 ret = omapvid_apply_changes(vout);
646 if (ret)
647 printk(KERN_ERR VOUT_NAME "failed to change mode\n");
648
649 vout_isr_err:
650 spin_unlock(&vout->vbq_lock);
651 }
652
653 /* Video buffer call backs */
654
655 /*
656 * Buffer setup function is called by videobuf layer when REQBUF ioctl is
657 * called. This is used to setup buffers and return size and count of
658 * buffers allocated. After the call to this buffer, videobuf layer will
659 * setup buffer queue depending on the size and count of buffers
660 */
661 static int omap_vout_buffer_setup(struct videobuf_queue *q, unsigned int *count,
662 unsigned int *size)
663 {
664 int startindex = 0, i, j;
665 u32 phy_addr = 0, virt_addr = 0;
666 struct omap_vout_device *vout = q->priv_data;
667 struct omapvideo_info *ovid = &vout->vid_info;
668 int vid_max_buf_size;
669
670 if (!vout)
671 return -EINVAL;
672
673 vid_max_buf_size = vout->vid == OMAP_VIDEO1 ? video1_bufsize :
674 video2_bufsize;
675
676 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != q->type)
677 return -EINVAL;
678
679 startindex = (vout->vid == OMAP_VIDEO1) ?
680 video1_numbuffers : video2_numbuffers;
681 if (V4L2_MEMORY_MMAP == vout->memory && *count < startindex)
682 *count = startindex;
683
684 if (ovid->rotation_type == VOUT_ROT_VRFB) {
685 if (omap_vout_vrfb_buffer_setup(vout, count, startindex))
686 return -ENOMEM;
687 }
688
689 if (V4L2_MEMORY_MMAP != vout->memory)
690 return 0;
691
692 /* Now allocated the V4L2 buffers */
693 *size = PAGE_ALIGN(vout->pix.width * vout->pix.height * vout->bpp);
694 startindex = (vout->vid == OMAP_VIDEO1) ?
695 video1_numbuffers : video2_numbuffers;
696
697 /* Check the size of the buffer */
698 if (*size > vid_max_buf_size) {
699 v4l2_err(&vout->vid_dev->v4l2_dev,
700 "buffer allocation mismatch [%u] [%u]\n",
701 *size, vout->buffer_size);
702 return -ENOMEM;
703 }
704
705 for (i = startindex; i < *count; i++) {
706 vout->buffer_size = *size;
707
708 virt_addr = omap_vout_alloc_buffer(vout->buffer_size,
709 &phy_addr);
710 if (!virt_addr) {
711 if (ovid->rotation_type == VOUT_ROT_NONE) {
712 break;
713 } else {
714 if (!is_rotation_enabled(vout))
715 break;
716 /* Free the VRFB buffers if no space for V4L2 buffers */
717 for (j = i; j < *count; j++) {
718 omap_vout_free_buffer(
719 vout->smsshado_virt_addr[j],
720 vout->smsshado_size);
721 vout->smsshado_virt_addr[j] = 0;
722 vout->smsshado_phy_addr[j] = 0;
723 }
724 }
725 }
726 vout->buf_virt_addr[i] = virt_addr;
727 vout->buf_phy_addr[i] = phy_addr;
728 }
729 *count = vout->buffer_allocated = i;
730
731 return 0;
732 }
733
734 /*
735 * Free the V4L2 buffers additionally allocated than default
736 * number of buffers
737 */
738 static void omap_vout_free_extra_buffers(struct omap_vout_device *vout)
739 {
740 int num_buffers = 0, i;
741
742 num_buffers = (vout->vid == OMAP_VIDEO1) ?
743 video1_numbuffers : video2_numbuffers;
744
745 for (i = num_buffers; i < vout->buffer_allocated; i++) {
746 if (vout->buf_virt_addr[i])
747 omap_vout_free_buffer(vout->buf_virt_addr[i],
748 vout->buffer_size);
749
750 vout->buf_virt_addr[i] = 0;
751 vout->buf_phy_addr[i] = 0;
752 }
753 vout->buffer_allocated = num_buffers;
754 }
755
756 /*
757 * This function will be called when VIDIOC_QBUF ioctl is called.
758 * It prepare buffers before give out for the display. This function
759 * converts user space virtual address into physical address if userptr memory
760 * exchange mechanism is used. If rotation is enabled, it copies entire
761 * buffer into VRFB memory space before giving it to the DSS.
762 */
763 static int omap_vout_buffer_prepare(struct videobuf_queue *q,
764 struct videobuf_buffer *vb,
765 enum v4l2_field field)
766 {
767 struct omap_vout_device *vout = q->priv_data;
768 struct omapvideo_info *ovid = &vout->vid_info;
769
770 if (VIDEOBUF_NEEDS_INIT == vb->state) {
771 vb->width = vout->pix.width;
772 vb->height = vout->pix.height;
773 vb->size = vb->width * vb->height * vout->bpp;
774 vb->field = field;
775 }
776 vb->state = VIDEOBUF_PREPARED;
777 /* if user pointer memory mechanism is used, get the physical
778 * address of the buffer
779 */
780 if (V4L2_MEMORY_USERPTR == vb->memory) {
781 if (0 == vb->baddr)
782 return -EINVAL;
783 /* Physical address */
784 vout->queued_buf_addr[vb->i] = (u8 *)
785 omap_vout_uservirt_to_phys(vb->baddr);
786 } else {
787 u32 addr, dma_addr;
788 unsigned long size;
789
790 addr = (unsigned long) vout->buf_virt_addr[vb->i];
791 size = (unsigned long) vb->size;
792
793 dma_addr = dma_map_single(vout->vid_dev->v4l2_dev.dev, (void *) addr,
794 size, DMA_TO_DEVICE);
795 if (dma_mapping_error(vout->vid_dev->v4l2_dev.dev, dma_addr))
796 v4l2_err(&vout->vid_dev->v4l2_dev, "dma_map_single failed\n");
797
798 vout->queued_buf_addr[vb->i] = (u8 *)vout->buf_phy_addr[vb->i];
799 }
800
801 if (ovid->rotation_type == VOUT_ROT_VRFB)
802 return omap_vout_prepare_vrfb(vout, vb);
803 else
804 return 0;
805 }
806
807 /*
808 * Buffer queue function will be called from the videobuf layer when _QBUF
809 * ioctl is called. It is used to enqueue buffer, which is ready to be
810 * displayed.
811 */
812 static void omap_vout_buffer_queue(struct videobuf_queue *q,
813 struct videobuf_buffer *vb)
814 {
815 struct omap_vout_device *vout = q->priv_data;
816
817 /* Driver is also maintainig a queue. So enqueue buffer in the driver
818 * queue */
819 list_add_tail(&vb->queue, &vout->dma_queue);
820
821 vb->state = VIDEOBUF_QUEUED;
822 }
823
824 /*
825 * Buffer release function is called from videobuf layer to release buffer
826 * which are already allocated
827 */
828 static void omap_vout_buffer_release(struct videobuf_queue *q,
829 struct videobuf_buffer *vb)
830 {
831 struct omap_vout_device *vout = q->priv_data;
832
833 vb->state = VIDEOBUF_NEEDS_INIT;
834
835 if (V4L2_MEMORY_MMAP != vout->memory)
836 return;
837 }
838
839 /*
840 * File operations
841 */
842 static unsigned int omap_vout_poll(struct file *file,
843 struct poll_table_struct *wait)
844 {
845 struct omap_vout_device *vout = file->private_data;
846 struct videobuf_queue *q = &vout->vbq;
847
848 return videobuf_poll_stream(file, q, wait);
849 }
850
851 static void omap_vout_vm_open(struct vm_area_struct *vma)
852 {
853 struct omap_vout_device *vout = vma->vm_private_data;
854
855 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
856 "vm_open [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
857 vout->mmap_count++;
858 }
859
860 static void omap_vout_vm_close(struct vm_area_struct *vma)
861 {
862 struct omap_vout_device *vout = vma->vm_private_data;
863
864 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
865 "vm_close [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
866 vout->mmap_count--;
867 }
868
869 static struct vm_operations_struct omap_vout_vm_ops = {
870 .open = omap_vout_vm_open,
871 .close = omap_vout_vm_close,
872 };
873
874 static int omap_vout_mmap(struct file *file, struct vm_area_struct *vma)
875 {
876 int i;
877 void *pos;
878 unsigned long start = vma->vm_start;
879 unsigned long size = (vma->vm_end - vma->vm_start);
880 struct omap_vout_device *vout = file->private_data;
881 struct videobuf_queue *q = &vout->vbq;
882
883 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
884 " %s pgoff=0x%lx, start=0x%lx, end=0x%lx\n", __func__,
885 vma->vm_pgoff, vma->vm_start, vma->vm_end);
886
887 /* look for the buffer to map */
888 for (i = 0; i < VIDEO_MAX_FRAME; i++) {
889 if (NULL == q->bufs[i])
890 continue;
891 if (V4L2_MEMORY_MMAP != q->bufs[i]->memory)
892 continue;
893 if (q->bufs[i]->boff == (vma->vm_pgoff << PAGE_SHIFT))
894 break;
895 }
896
897 if (VIDEO_MAX_FRAME == i) {
898 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
899 "offset invalid [offset=0x%lx]\n",
900 (vma->vm_pgoff << PAGE_SHIFT));
901 return -EINVAL;
902 }
903 /* Check the size of the buffer */
904 if (size > vout->buffer_size) {
905 v4l2_err(&vout->vid_dev->v4l2_dev,
906 "insufficient memory [%lu] [%u]\n",
907 size, vout->buffer_size);
908 return -ENOMEM;
909 }
910
911 q->bufs[i]->baddr = vma->vm_start;
912
913 vma->vm_flags |= VM_RESERVED;
914 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
915 vma->vm_ops = &omap_vout_vm_ops;
916 vma->vm_private_data = (void *) vout;
917 pos = (void *)vout->buf_virt_addr[i];
918 vma->vm_pgoff = virt_to_phys((void *)pos) >> PAGE_SHIFT;
919 while (size > 0) {
920 unsigned long pfn;
921 pfn = virt_to_phys((void *) pos) >> PAGE_SHIFT;
922 if (remap_pfn_range(vma, start, pfn, PAGE_SIZE, PAGE_SHARED))
923 return -EAGAIN;
924 start += PAGE_SIZE;
925 pos += PAGE_SIZE;
926 size -= PAGE_SIZE;
927 }
928 vout->mmap_count++;
929 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
930
931 return 0;
932 }
933
934 static int omap_vout_release(struct file *file)
935 {
936 unsigned int ret, i;
937 struct videobuf_queue *q;
938 struct omapvideo_info *ovid;
939 struct omap_vout_device *vout = file->private_data;
940
941 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
942 ovid = &vout->vid_info;
943
944 if (!vout)
945 return 0;
946
947 q = &vout->vbq;
948 /* Disable all the overlay managers connected with this interface */
949 for (i = 0; i < ovid->num_overlays; i++) {
950 struct omap_overlay *ovl = ovid->overlays[i];
951 if (ovl->manager && ovl->manager->device)
952 ovl->disable(ovl);
953 }
954 /* Turn off the pipeline */
955 ret = omapvid_apply_changes(vout);
956 if (ret)
957 v4l2_warn(&vout->vid_dev->v4l2_dev,
958 "Unable to apply changes\n");
959
960 /* Free all buffers */
961 omap_vout_free_extra_buffers(vout);
962
963 /* Free the VRFB buffers only if they are allocated
964 * during reqbufs. Don't free if init time allocated
965 */
966 if (ovid->rotation_type == VOUT_ROT_VRFB) {
967 if (!vout->vrfb_static_allocation)
968 omap_vout_free_vrfb_buffers(vout);
969 }
970 videobuf_mmap_free(q);
971
972 /* Even if apply changes fails we should continue
973 freeing allocated memory */
974 if (vout->streaming) {
975 u32 mask = 0;
976
977 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN |
978 DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_VSYNC2;
979 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
980 vout->streaming = 0;
981
982 videobuf_streamoff(q);
983 videobuf_queue_cancel(q);
984 }
985
986 if (vout->mmap_count != 0)
987 vout->mmap_count = 0;
988
989 vout->opened -= 1;
990 file->private_data = NULL;
991
992 if (vout->buffer_allocated)
993 videobuf_mmap_free(q);
994
995 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
996 return ret;
997 }
998
999 static int omap_vout_open(struct file *file)
1000 {
1001 struct videobuf_queue *q;
1002 struct omap_vout_device *vout = NULL;
1003
1004 vout = video_drvdata(file);
1005 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
1006
1007 if (vout == NULL)
1008 return -ENODEV;
1009
1010 /* for now, we only support single open */
1011 if (vout->opened)
1012 return -EBUSY;
1013
1014 vout->opened += 1;
1015
1016 file->private_data = vout;
1017 vout->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1018
1019 q = &vout->vbq;
1020 video_vbq_ops.buf_setup = omap_vout_buffer_setup;
1021 video_vbq_ops.buf_prepare = omap_vout_buffer_prepare;
1022 video_vbq_ops.buf_release = omap_vout_buffer_release;
1023 video_vbq_ops.buf_queue = omap_vout_buffer_queue;
1024 spin_lock_init(&vout->vbq_lock);
1025
1026 videobuf_queue_dma_contig_init(q, &video_vbq_ops, q->dev,
1027 &vout->vbq_lock, vout->type, V4L2_FIELD_NONE,
1028 sizeof(struct videobuf_buffer), vout, NULL);
1029
1030 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1031 return 0;
1032 }
1033
1034 /*
1035 * V4L2 ioctls
1036 */
1037 static int vidioc_querycap(struct file *file, void *fh,
1038 struct v4l2_capability *cap)
1039 {
1040 struct omap_vout_device *vout = fh;
1041
1042 strlcpy(cap->driver, VOUT_NAME, sizeof(cap->driver));
1043 strlcpy(cap->card, vout->vfd->name, sizeof(cap->card));
1044 cap->bus_info[0] = '\0';
1045 cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_OUTPUT |
1046 V4L2_CAP_VIDEO_OUTPUT_OVERLAY;
1047
1048 return 0;
1049 }
1050
1051 static int vidioc_enum_fmt_vid_out(struct file *file, void *fh,
1052 struct v4l2_fmtdesc *fmt)
1053 {
1054 int index = fmt->index;
1055
1056 if (index >= NUM_OUTPUT_FORMATS)
1057 return -EINVAL;
1058
1059 fmt->flags = omap_formats[index].flags;
1060 strlcpy(fmt->description, omap_formats[index].description,
1061 sizeof(fmt->description));
1062 fmt->pixelformat = omap_formats[index].pixelformat;
1063
1064 return 0;
1065 }
1066
1067 static int vidioc_g_fmt_vid_out(struct file *file, void *fh,
1068 struct v4l2_format *f)
1069 {
1070 struct omap_vout_device *vout = fh;
1071
1072 f->fmt.pix = vout->pix;
1073 return 0;
1074
1075 }
1076
1077 static int vidioc_try_fmt_vid_out(struct file *file, void *fh,
1078 struct v4l2_format *f)
1079 {
1080 struct omap_overlay *ovl;
1081 struct omapvideo_info *ovid;
1082 struct omap_video_timings *timing;
1083 struct omap_vout_device *vout = fh;
1084
1085 ovid = &vout->vid_info;
1086 ovl = ovid->overlays[0];
1087
1088 if (!ovl->manager || !ovl->manager->device)
1089 return -EINVAL;
1090 /* get the display device attached to the overlay */
1091 timing = &ovl->manager->device->panel.timings;
1092
1093 vout->fbuf.fmt.height = timing->y_res;
1094 vout->fbuf.fmt.width = timing->x_res;
1095
1096 omap_vout_try_format(&f->fmt.pix);
1097 return 0;
1098 }
1099
1100 static int vidioc_s_fmt_vid_out(struct file *file, void *fh,
1101 struct v4l2_format *f)
1102 {
1103 int ret, bpp;
1104 struct omap_overlay *ovl;
1105 struct omapvideo_info *ovid;
1106 struct omap_video_timings *timing;
1107 struct omap_vout_device *vout = fh;
1108
1109 if (vout->streaming)
1110 return -EBUSY;
1111
1112 mutex_lock(&vout->lock);
1113
1114 ovid = &vout->vid_info;
1115 ovl = ovid->overlays[0];
1116
1117 /* get the display device attached to the overlay */
1118 if (!ovl->manager || !ovl->manager->device) {
1119 ret = -EINVAL;
1120 goto s_fmt_vid_out_exit;
1121 }
1122 timing = &ovl->manager->device->panel.timings;
1123
1124 /* We dont support RGB24-packed mode if vrfb rotation
1125 * is enabled*/
1126 if ((is_rotation_enabled(vout)) &&
1127 f->fmt.pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1128 ret = -EINVAL;
1129 goto s_fmt_vid_out_exit;
1130 }
1131
1132 /* get the framebuffer parameters */
1133
1134 if (is_rotation_90_or_270(vout)) {
1135 vout->fbuf.fmt.height = timing->x_res;
1136 vout->fbuf.fmt.width = timing->y_res;
1137 } else {
1138 vout->fbuf.fmt.height = timing->y_res;
1139 vout->fbuf.fmt.width = timing->x_res;
1140 }
1141
1142 /* change to samller size is OK */
1143
1144 bpp = omap_vout_try_format(&f->fmt.pix);
1145 f->fmt.pix.sizeimage = f->fmt.pix.width * f->fmt.pix.height * bpp;
1146
1147 /* try & set the new output format */
1148 vout->bpp = bpp;
1149 vout->pix = f->fmt.pix;
1150 vout->vrfb_bpp = 1;
1151
1152 /* If YUYV then vrfb bpp is 2, for others its 1 */
1153 if (V4L2_PIX_FMT_YUYV == vout->pix.pixelformat ||
1154 V4L2_PIX_FMT_UYVY == vout->pix.pixelformat)
1155 vout->vrfb_bpp = 2;
1156
1157 /* set default crop and win */
1158 omap_vout_new_format(&vout->pix, &vout->fbuf, &vout->crop, &vout->win);
1159
1160 /* Save the changes in the overlay strcuture */
1161 ret = omapvid_init(vout, 0);
1162 if (ret) {
1163 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1164 goto s_fmt_vid_out_exit;
1165 }
1166
1167 ret = 0;
1168
1169 s_fmt_vid_out_exit:
1170 mutex_unlock(&vout->lock);
1171 return ret;
1172 }
1173
1174 static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh,
1175 struct v4l2_format *f)
1176 {
1177 int ret = 0;
1178 struct omap_vout_device *vout = fh;
1179 struct omap_overlay *ovl;
1180 struct omapvideo_info *ovid;
1181 struct v4l2_window *win = &f->fmt.win;
1182
1183 ovid = &vout->vid_info;
1184 ovl = ovid->overlays[0];
1185
1186 ret = omap_vout_try_window(&vout->fbuf, win);
1187
1188 if (!ret) {
1189 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1190 win->global_alpha = 255;
1191 else
1192 win->global_alpha = f->fmt.win.global_alpha;
1193 }
1194
1195 return ret;
1196 }
1197
1198 static int vidioc_s_fmt_vid_overlay(struct file *file, void *fh,
1199 struct v4l2_format *f)
1200 {
1201 int ret = 0;
1202 struct omap_overlay *ovl;
1203 struct omapvideo_info *ovid;
1204 struct omap_vout_device *vout = fh;
1205 struct v4l2_window *win = &f->fmt.win;
1206
1207 mutex_lock(&vout->lock);
1208 ovid = &vout->vid_info;
1209 ovl = ovid->overlays[0];
1210
1211 ret = omap_vout_new_window(&vout->crop, &vout->win, &vout->fbuf, win);
1212 if (!ret) {
1213 /* Video1 plane does not support global alpha on OMAP3 */
1214 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1215 vout->win.global_alpha = 255;
1216 else
1217 vout->win.global_alpha = f->fmt.win.global_alpha;
1218
1219 vout->win.chromakey = f->fmt.win.chromakey;
1220 }
1221 mutex_unlock(&vout->lock);
1222 return ret;
1223 }
1224
1225 static int vidioc_enum_fmt_vid_overlay(struct file *file, void *fh,
1226 struct v4l2_fmtdesc *fmt)
1227 {
1228 int index = fmt->index;
1229
1230 if (index >= NUM_OUTPUT_FORMATS)
1231 return -EINVAL;
1232
1233 fmt->flags = omap_formats[index].flags;
1234 strlcpy(fmt->description, omap_formats[index].description,
1235 sizeof(fmt->description));
1236 fmt->pixelformat = omap_formats[index].pixelformat;
1237 return 0;
1238 }
1239
1240 static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh,
1241 struct v4l2_format *f)
1242 {
1243 u32 key_value = 0;
1244 struct omap_overlay *ovl;
1245 struct omapvideo_info *ovid;
1246 struct omap_vout_device *vout = fh;
1247 struct omap_overlay_manager_info info;
1248 struct v4l2_window *win = &f->fmt.win;
1249
1250 ovid = &vout->vid_info;
1251 ovl = ovid->overlays[0];
1252
1253 win->w = vout->win.w;
1254 win->field = vout->win.field;
1255 win->global_alpha = vout->win.global_alpha;
1256
1257 if (ovl->manager && ovl->manager->get_manager_info) {
1258 ovl->manager->get_manager_info(ovl->manager, &info);
1259 key_value = info.trans_key;
1260 }
1261 win->chromakey = key_value;
1262 return 0;
1263 }
1264
1265 static int vidioc_cropcap(struct file *file, void *fh,
1266 struct v4l2_cropcap *cropcap)
1267 {
1268 struct omap_vout_device *vout = fh;
1269 struct v4l2_pix_format *pix = &vout->pix;
1270
1271 if (cropcap->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1272 return -EINVAL;
1273
1274 /* Width and height are always even */
1275 cropcap->bounds.width = pix->width & ~1;
1276 cropcap->bounds.height = pix->height & ~1;
1277
1278 omap_vout_default_crop(&vout->pix, &vout->fbuf, &cropcap->defrect);
1279 cropcap->pixelaspect.numerator = 1;
1280 cropcap->pixelaspect.denominator = 1;
1281 return 0;
1282 }
1283
1284 static int vidioc_g_crop(struct file *file, void *fh, struct v4l2_crop *crop)
1285 {
1286 struct omap_vout_device *vout = fh;
1287
1288 if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1289 return -EINVAL;
1290 crop->c = vout->crop;
1291 return 0;
1292 }
1293
1294 static int vidioc_s_crop(struct file *file, void *fh, struct v4l2_crop *crop)
1295 {
1296 int ret = -EINVAL;
1297 struct omap_vout_device *vout = fh;
1298 struct omapvideo_info *ovid;
1299 struct omap_overlay *ovl;
1300 struct omap_video_timings *timing;
1301
1302 if (vout->streaming)
1303 return -EBUSY;
1304
1305 mutex_lock(&vout->lock);
1306 ovid = &vout->vid_info;
1307 ovl = ovid->overlays[0];
1308
1309 if (!ovl->manager || !ovl->manager->device) {
1310 ret = -EINVAL;
1311 goto s_crop_err;
1312 }
1313 /* get the display device attached to the overlay */
1314 timing = &ovl->manager->device->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 omap_dispc_register_isr(omap_vout_isr, vout, mask);
1666
1667 for (j = 0; j < ovid->num_overlays; j++) {
1668 struct omap_overlay *ovl = ovid->overlays[j];
1669
1670 if (ovl->manager && ovl->manager->device) {
1671 struct omap_overlay_info info;
1672 ovl->get_overlay_info(ovl, &info);
1673 info.paddr = addr;
1674 if (ovl->set_overlay_info(ovl, &info)) {
1675 ret = -EINVAL;
1676 goto streamon_err1;
1677 }
1678 }
1679 }
1680
1681 /* First save the configuration in ovelray structure */
1682 ret = omapvid_init(vout, addr);
1683 if (ret)
1684 v4l2_err(&vout->vid_dev->v4l2_dev,
1685 "failed to set overlay info\n");
1686 /* Enable the pipeline and set the Go bit */
1687 ret = omapvid_apply_changes(vout);
1688 if (ret)
1689 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1690
1691 for (j = 0; j < ovid->num_overlays; j++) {
1692 struct omap_overlay *ovl = ovid->overlays[j];
1693
1694 if (ovl->manager && ovl->manager->device) {
1695 ret = ovl->enable(ovl);
1696 if (ret)
1697 goto streamon_err1;
1698 }
1699 }
1700
1701 ret = 0;
1702
1703 streamon_err1:
1704 if (ret)
1705 ret = videobuf_streamoff(q);
1706 streamon_err:
1707 mutex_unlock(&vout->lock);
1708 return ret;
1709 }
1710
1711 static int vidioc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i)
1712 {
1713 u32 mask = 0;
1714 int ret = 0, j;
1715 struct omap_vout_device *vout = fh;
1716 struct omapvideo_info *ovid = &vout->vid_info;
1717
1718 if (!vout->streaming)
1719 return -EINVAL;
1720
1721 vout->streaming = 0;
1722 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1723 | DISPC_IRQ_VSYNC2;
1724
1725 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
1726
1727 for (j = 0; j < ovid->num_overlays; j++) {
1728 struct omap_overlay *ovl = ovid->overlays[j];
1729
1730 if (ovl->manager && ovl->manager->device)
1731 ovl->disable(ovl);
1732 }
1733
1734 /* Turn of the pipeline */
1735 ret = omapvid_apply_changes(vout);
1736 if (ret)
1737 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode in"
1738 " streamoff\n");
1739
1740 INIT_LIST_HEAD(&vout->dma_queue);
1741 ret = videobuf_streamoff(&vout->vbq);
1742
1743 return ret;
1744 }
1745
1746 static int vidioc_s_fbuf(struct file *file, void *fh,
1747 struct v4l2_framebuffer *a)
1748 {
1749 int enable = 0;
1750 struct omap_overlay *ovl;
1751 struct omapvideo_info *ovid;
1752 struct omap_vout_device *vout = fh;
1753 struct omap_overlay_manager_info info;
1754 enum omap_dss_trans_key_type key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1755
1756 ovid = &vout->vid_info;
1757 ovl = ovid->overlays[0];
1758
1759 /* OMAP DSS doesn't support Source and Destination color
1760 key together */
1761 if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY) &&
1762 (a->flags & V4L2_FBUF_FLAG_CHROMAKEY))
1763 return -EINVAL;
1764 /* OMAP DSS Doesn't support the Destination color key
1765 and alpha blending together */
1766 if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY) &&
1767 (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA))
1768 return -EINVAL;
1769
1770 if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY)) {
1771 vout->fbuf.flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1772 key_type = OMAP_DSS_COLOR_KEY_VID_SRC;
1773 } else
1774 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1775
1776 if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY)) {
1777 vout->fbuf.flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1778 key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1779 } else
1780 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_CHROMAKEY;
1781
1782 if (a->flags & (V4L2_FBUF_FLAG_CHROMAKEY |
1783 V4L2_FBUF_FLAG_SRC_CHROMAKEY))
1784 enable = 1;
1785 else
1786 enable = 0;
1787 if (ovl->manager && ovl->manager->get_manager_info &&
1788 ovl->manager->set_manager_info) {
1789
1790 ovl->manager->get_manager_info(ovl->manager, &info);
1791 info.trans_enabled = enable;
1792 info.trans_key_type = key_type;
1793 info.trans_key = vout->win.chromakey;
1794
1795 if (ovl->manager->set_manager_info(ovl->manager, &info))
1796 return -EINVAL;
1797 }
1798 if (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA) {
1799 vout->fbuf.flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1800 enable = 1;
1801 } else {
1802 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_LOCAL_ALPHA;
1803 enable = 0;
1804 }
1805 if (ovl->manager && ovl->manager->get_manager_info &&
1806 ovl->manager->set_manager_info) {
1807 ovl->manager->get_manager_info(ovl->manager, &info);
1808 /* enable this only if there is no zorder cap */
1809 if ((ovl->caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
1810 info.partial_alpha_enabled = enable;
1811 if (ovl->manager->set_manager_info(ovl->manager, &info))
1812 return -EINVAL;
1813 }
1814
1815 return 0;
1816 }
1817
1818 static int vidioc_g_fbuf(struct file *file, void *fh,
1819 struct v4l2_framebuffer *a)
1820 {
1821 struct omap_overlay *ovl;
1822 struct omapvideo_info *ovid;
1823 struct omap_vout_device *vout = fh;
1824 struct omap_overlay_manager_info info;
1825
1826 ovid = &vout->vid_info;
1827 ovl = ovid->overlays[0];
1828
1829 /* The video overlay must stay within the framebuffer and can't be
1830 positioned independently. */
1831 a->flags = V4L2_FBUF_FLAG_OVERLAY;
1832 a->capability = V4L2_FBUF_CAP_LOCAL_ALPHA | V4L2_FBUF_CAP_CHROMAKEY
1833 | V4L2_FBUF_CAP_SRC_CHROMAKEY;
1834
1835 if (ovl->manager && ovl->manager->get_manager_info) {
1836 ovl->manager->get_manager_info(ovl->manager, &info);
1837 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_VID_SRC)
1838 a->flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1839 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_GFX_DST)
1840 a->flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1841 }
1842 if (ovl->manager && ovl->manager->get_manager_info) {
1843 ovl->manager->get_manager_info(ovl->manager, &info);
1844 if (info.partial_alpha_enabled)
1845 a->flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1846 }
1847
1848 return 0;
1849 }
1850
1851 static const struct v4l2_ioctl_ops vout_ioctl_ops = {
1852 .vidioc_querycap = vidioc_querycap,
1853 .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out,
1854 .vidioc_g_fmt_vid_out = vidioc_g_fmt_vid_out,
1855 .vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out,
1856 .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out,
1857 .vidioc_queryctrl = vidioc_queryctrl,
1858 .vidioc_g_ctrl = vidioc_g_ctrl,
1859 .vidioc_s_fbuf = vidioc_s_fbuf,
1860 .vidioc_g_fbuf = vidioc_g_fbuf,
1861 .vidioc_s_ctrl = vidioc_s_ctrl,
1862 .vidioc_try_fmt_vid_overlay = vidioc_try_fmt_vid_overlay,
1863 .vidioc_s_fmt_vid_overlay = vidioc_s_fmt_vid_overlay,
1864 .vidioc_enum_fmt_vid_overlay = vidioc_enum_fmt_vid_overlay,
1865 .vidioc_g_fmt_vid_overlay = vidioc_g_fmt_vid_overlay,
1866 .vidioc_cropcap = vidioc_cropcap,
1867 .vidioc_g_crop = vidioc_g_crop,
1868 .vidioc_s_crop = vidioc_s_crop,
1869 .vidioc_reqbufs = vidioc_reqbufs,
1870 .vidioc_querybuf = vidioc_querybuf,
1871 .vidioc_qbuf = vidioc_qbuf,
1872 .vidioc_dqbuf = vidioc_dqbuf,
1873 .vidioc_streamon = vidioc_streamon,
1874 .vidioc_streamoff = vidioc_streamoff,
1875 };
1876
1877 static const struct v4l2_file_operations omap_vout_fops = {
1878 .owner = THIS_MODULE,
1879 .poll = omap_vout_poll,
1880 .unlocked_ioctl = video_ioctl2,
1881 .mmap = omap_vout_mmap,
1882 .open = omap_vout_open,
1883 .release = omap_vout_release,
1884 };
1885
1886 /* Init functions used during driver initialization */
1887 /* Initial setup of video_data */
1888 static int __init omap_vout_setup_video_data(struct omap_vout_device *vout)
1889 {
1890 struct video_device *vfd;
1891 struct v4l2_pix_format *pix;
1892 struct v4l2_control *control;
1893 struct omap_dss_device *display =
1894 vout->vid_info.overlays[0]->manager->device;
1895
1896 /* set the default pix */
1897 pix = &vout->pix;
1898
1899 /* Set the default picture of QVGA */
1900 pix->width = QQVGA_WIDTH;
1901 pix->height = QQVGA_HEIGHT;
1902
1903 /* Default pixel format is RGB 5-6-5 */
1904 pix->pixelformat = V4L2_PIX_FMT_RGB565;
1905 pix->field = V4L2_FIELD_ANY;
1906 pix->bytesperline = pix->width * 2;
1907 pix->sizeimage = pix->bytesperline * pix->height;
1908 pix->priv = 0;
1909 pix->colorspace = V4L2_COLORSPACE_JPEG;
1910
1911 vout->bpp = RGB565_BPP;
1912 vout->fbuf.fmt.width = display->panel.timings.x_res;
1913 vout->fbuf.fmt.height = display->panel.timings.y_res;
1914
1915 /* Set the data structures for the overlay parameters*/
1916 vout->win.global_alpha = 255;
1917 vout->fbuf.flags = 0;
1918 vout->fbuf.capability = V4L2_FBUF_CAP_LOCAL_ALPHA |
1919 V4L2_FBUF_CAP_SRC_CHROMAKEY | V4L2_FBUF_CAP_CHROMAKEY;
1920 vout->win.chromakey = 0;
1921
1922 omap_vout_new_format(pix, &vout->fbuf, &vout->crop, &vout->win);
1923
1924 /*Initialize the control variables for
1925 rotation, flipping and background color. */
1926 control = vout->control;
1927 control[0].id = V4L2_CID_ROTATE;
1928 control[0].value = 0;
1929 vout->rotation = 0;
1930 vout->mirror = 0;
1931 vout->control[2].id = V4L2_CID_HFLIP;
1932 vout->control[2].value = 0;
1933 if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
1934 vout->vrfb_bpp = 2;
1935
1936 control[1].id = V4L2_CID_BG_COLOR;
1937 control[1].value = 0;
1938
1939 /* initialize the video_device struct */
1940 vfd = vout->vfd = video_device_alloc();
1941
1942 if (!vfd) {
1943 printk(KERN_ERR VOUT_NAME ": could not allocate"
1944 " video device struct\n");
1945 return -ENOMEM;
1946 }
1947 vfd->release = video_device_release;
1948 vfd->ioctl_ops = &vout_ioctl_ops;
1949
1950 strlcpy(vfd->name, VOUT_NAME, sizeof(vfd->name));
1951
1952 vfd->fops = &omap_vout_fops;
1953 vfd->v4l2_dev = &vout->vid_dev->v4l2_dev;
1954 mutex_init(&vout->lock);
1955
1956 vfd->minor = -1;
1957 return 0;
1958
1959 }
1960
1961 /* Setup video buffers */
1962 static int __init omap_vout_setup_video_bufs(struct platform_device *pdev,
1963 int vid_num)
1964 {
1965 u32 numbuffers;
1966 int ret = 0, i;
1967 struct omapvideo_info *ovid;
1968 struct omap_vout_device *vout;
1969 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1970 struct omap2video_device *vid_dev =
1971 container_of(v4l2_dev, struct omap2video_device, v4l2_dev);
1972
1973 vout = vid_dev->vouts[vid_num];
1974 ovid = &vout->vid_info;
1975
1976 numbuffers = (vid_num == 0) ? video1_numbuffers : video2_numbuffers;
1977 vout->buffer_size = (vid_num == 0) ? video1_bufsize : video2_bufsize;
1978 dev_info(&pdev->dev, "Buffer Size = %d\n", vout->buffer_size);
1979
1980 for (i = 0; i < numbuffers; i++) {
1981 vout->buf_virt_addr[i] =
1982 omap_vout_alloc_buffer(vout->buffer_size,
1983 (u32 *) &vout->buf_phy_addr[i]);
1984 if (!vout->buf_virt_addr[i]) {
1985 numbuffers = i;
1986 ret = -ENOMEM;
1987 goto free_buffers;
1988 }
1989 }
1990
1991 vout->cropped_offset = 0;
1992
1993 if (ovid->rotation_type == VOUT_ROT_VRFB) {
1994 int static_vrfb_allocation = (vid_num == 0) ?
1995 vid1_static_vrfb_alloc : vid2_static_vrfb_alloc;
1996 ret = omap_vout_setup_vrfb_bufs(pdev, vid_num,
1997 static_vrfb_allocation);
1998 }
1999
2000 return ret;
2001
2002 free_buffers:
2003 for (i = 0; i < numbuffers; i++) {
2004 omap_vout_free_buffer(vout->buf_virt_addr[i],
2005 vout->buffer_size);
2006 vout->buf_virt_addr[i] = 0;
2007 vout->buf_phy_addr[i] = 0;
2008 }
2009 return ret;
2010
2011 }
2012
2013 /* Create video out devices */
2014 static int __init omap_vout_create_video_devices(struct platform_device *pdev)
2015 {
2016 int ret = 0, k;
2017 struct omap_vout_device *vout;
2018 struct video_device *vfd = NULL;
2019 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2020 struct omap2video_device *vid_dev = container_of(v4l2_dev,
2021 struct omap2video_device, v4l2_dev);
2022
2023 for (k = 0; k < pdev->num_resources; k++) {
2024
2025 vout = kzalloc(sizeof(struct omap_vout_device), GFP_KERNEL);
2026 if (!vout) {
2027 dev_err(&pdev->dev, ": could not allocate memory\n");
2028 return -ENOMEM;
2029 }
2030
2031 vout->vid = k;
2032 vid_dev->vouts[k] = vout;
2033 vout->vid_dev = vid_dev;
2034 /* Select video2 if only 1 overlay is controlled by V4L2 */
2035 if (pdev->num_resources == 1)
2036 vout->vid_info.overlays[0] = vid_dev->overlays[k + 2];
2037 else
2038 /* Else select video1 and video2 one by one. */
2039 vout->vid_info.overlays[0] = vid_dev->overlays[k + 1];
2040 vout->vid_info.num_overlays = 1;
2041 vout->vid_info.id = k + 1;
2042
2043 /* Set VRFB as rotation_type for omap2 and omap3 */
2044 if (cpu_is_omap24xx() || cpu_is_omap34xx())
2045 vout->vid_info.rotation_type = VOUT_ROT_VRFB;
2046
2047 /* Setup the default configuration for the video devices
2048 */
2049 if (omap_vout_setup_video_data(vout) != 0) {
2050 ret = -ENOMEM;
2051 goto error;
2052 }
2053
2054 /* Allocate default number of buffers for the video streaming
2055 * and reserve the VRFB space for rotation
2056 */
2057 if (omap_vout_setup_video_bufs(pdev, k) != 0) {
2058 ret = -ENOMEM;
2059 goto error1;
2060 }
2061
2062 /* Register the Video device with V4L2
2063 */
2064 vfd = vout->vfd;
2065 if (video_register_device(vfd, VFL_TYPE_GRABBER, -1) < 0) {
2066 dev_err(&pdev->dev, ": Could not register "
2067 "Video for Linux device\n");
2068 vfd->minor = -1;
2069 ret = -ENODEV;
2070 goto error2;
2071 }
2072 video_set_drvdata(vfd, vout);
2073
2074 /* Configure the overlay structure */
2075 ret = omapvid_init(vid_dev->vouts[k], 0);
2076 if (!ret)
2077 goto success;
2078
2079 error2:
2080 if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
2081 omap_vout_release_vrfb(vout);
2082 omap_vout_free_buffers(vout);
2083 error1:
2084 video_device_release(vfd);
2085 error:
2086 kfree(vout);
2087 return ret;
2088
2089 success:
2090 dev_info(&pdev->dev, ": registered and initialized"
2091 " video device %d\n", vfd->minor);
2092 if (k == (pdev->num_resources - 1))
2093 return 0;
2094 }
2095
2096 return -ENODEV;
2097 }
2098 /* Driver functions */
2099 static void omap_vout_cleanup_device(struct omap_vout_device *vout)
2100 {
2101 struct video_device *vfd;
2102 struct omapvideo_info *ovid;
2103
2104 if (!vout)
2105 return;
2106
2107 vfd = vout->vfd;
2108 ovid = &vout->vid_info;
2109 if (vfd) {
2110 if (!video_is_registered(vfd)) {
2111 /*
2112 * The device was never registered, so release the
2113 * video_device struct directly.
2114 */
2115 video_device_release(vfd);
2116 } else {
2117 /*
2118 * The unregister function will release the video_device
2119 * struct as well as unregistering it.
2120 */
2121 video_unregister_device(vfd);
2122 }
2123 }
2124 if (ovid->rotation_type == VOUT_ROT_VRFB) {
2125 omap_vout_release_vrfb(vout);
2126 /* Free the VRFB buffer if allocated
2127 * init time
2128 */
2129 if (vout->vrfb_static_allocation)
2130 omap_vout_free_vrfb_buffers(vout);
2131 }
2132 omap_vout_free_buffers(vout);
2133
2134 kfree(vout);
2135 }
2136
2137 static int omap_vout_remove(struct platform_device *pdev)
2138 {
2139 int k;
2140 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2141 struct omap2video_device *vid_dev = container_of(v4l2_dev, struct
2142 omap2video_device, v4l2_dev);
2143
2144 v4l2_device_unregister(v4l2_dev);
2145 for (k = 0; k < pdev->num_resources; k++)
2146 omap_vout_cleanup_device(vid_dev->vouts[k]);
2147
2148 for (k = 0; k < vid_dev->num_displays; k++) {
2149 if (vid_dev->displays[k]->state != OMAP_DSS_DISPLAY_DISABLED)
2150 vid_dev->displays[k]->driver->disable(vid_dev->displays[k]);
2151
2152 omap_dss_put_device(vid_dev->displays[k]);
2153 }
2154 kfree(vid_dev);
2155 return 0;
2156 }
2157
2158 static int __init omap_vout_probe(struct platform_device *pdev)
2159 {
2160 int ret = 0, i;
2161 struct omap_overlay *ovl;
2162 struct omap_dss_device *dssdev = NULL;
2163 struct omap_dss_device *def_display;
2164 struct omap2video_device *vid_dev = NULL;
2165
2166 if (pdev->num_resources == 0) {
2167 dev_err(&pdev->dev, "probed for an unknown device\n");
2168 return -ENODEV;
2169 }
2170
2171 vid_dev = kzalloc(sizeof(struct omap2video_device), GFP_KERNEL);
2172 if (vid_dev == NULL)
2173 return -ENOMEM;
2174
2175 vid_dev->num_displays = 0;
2176 for_each_dss_dev(dssdev) {
2177 omap_dss_get_device(dssdev);
2178
2179 if (!dssdev->driver) {
2180 dev_warn(&pdev->dev, "no driver for display: %s\n",
2181 dssdev->name);
2182 omap_dss_put_device(dssdev);
2183 continue;
2184 }
2185
2186 vid_dev->displays[vid_dev->num_displays++] = dssdev;
2187 }
2188
2189 if (vid_dev->num_displays == 0) {
2190 dev_err(&pdev->dev, "no displays\n");
2191 ret = -EINVAL;
2192 goto probe_err0;
2193 }
2194
2195 vid_dev->num_overlays = omap_dss_get_num_overlays();
2196 for (i = 0; i < vid_dev->num_overlays; i++)
2197 vid_dev->overlays[i] = omap_dss_get_overlay(i);
2198
2199 vid_dev->num_managers = omap_dss_get_num_overlay_managers();
2200 for (i = 0; i < vid_dev->num_managers; i++)
2201 vid_dev->managers[i] = omap_dss_get_overlay_manager(i);
2202
2203 /* Get the Video1 overlay and video2 overlay.
2204 * Setup the Display attached to that overlays
2205 */
2206 for (i = 1; i < vid_dev->num_overlays; i++) {
2207 ovl = omap_dss_get_overlay(i);
2208 if (ovl->manager && ovl->manager->device) {
2209 def_display = ovl->manager->device;
2210 } else {
2211 dev_warn(&pdev->dev, "cannot find display\n");
2212 def_display = NULL;
2213 }
2214 if (def_display) {
2215 struct omap_dss_driver *dssdrv = def_display->driver;
2216
2217 ret = dssdrv->enable(def_display);
2218 if (ret) {
2219 /* Here we are not considering a error
2220 * as display may be enabled by frame
2221 * buffer driver
2222 */
2223 dev_warn(&pdev->dev,
2224 "'%s' Display already enabled\n",
2225 def_display->name);
2226 }
2227 }
2228 }
2229
2230 if (v4l2_device_register(&pdev->dev, &vid_dev->v4l2_dev) < 0) {
2231 dev_err(&pdev->dev, "v4l2_device_register failed\n");
2232 ret = -ENODEV;
2233 goto probe_err1;
2234 }
2235
2236 ret = omap_vout_create_video_devices(pdev);
2237 if (ret)
2238 goto probe_err2;
2239
2240 for (i = 0; i < vid_dev->num_displays; i++) {
2241 struct omap_dss_device *display = vid_dev->displays[i];
2242
2243 if (display->driver->update)
2244 display->driver->update(display, 0, 0,
2245 display->panel.timings.x_res,
2246 display->panel.timings.y_res);
2247 }
2248 return 0;
2249
2250 probe_err2:
2251 v4l2_device_unregister(&vid_dev->v4l2_dev);
2252 probe_err1:
2253 for (i = 1; i < vid_dev->num_overlays; i++) {
2254 def_display = NULL;
2255 ovl = omap_dss_get_overlay(i);
2256 if (ovl->manager && ovl->manager->device)
2257 def_display = ovl->manager->device;
2258
2259 if (def_display && def_display->driver)
2260 def_display->driver->disable(def_display);
2261 }
2262 probe_err0:
2263 kfree(vid_dev);
2264 return ret;
2265 }
2266
2267 static struct platform_driver omap_vout_driver = {
2268 .driver = {
2269 .name = VOUT_NAME,
2270 },
2271 .probe = omap_vout_probe,
2272 .remove = omap_vout_remove,
2273 };
2274
2275 static int __init omap_vout_init(void)
2276 {
2277 if (platform_driver_register(&omap_vout_driver) != 0) {
2278 printk(KERN_ERR VOUT_NAME ":Could not register Video driver\n");
2279 return -EINVAL;
2280 }
2281 return 0;
2282 }
2283
2284 static void omap_vout_cleanup(void)
2285 {
2286 platform_driver_unregister(&omap_vout_driver);
2287 }
2288
2289 late_initcall(omap_vout_init);
2290 module_exit(omap_vout_cleanup);