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mm: kill vma flag VM_RESERVED and mm->reserved_vm counter
[deliverable/linux.git] / drivers / media / platform / omap / omap_vout.c
1 /*
2 * omap_vout.c
3 *
4 * Copyright (C) 2005-2010 Texas Instruments.
5 *
6 * This file is licensed under the terms of the GNU General Public License
7 * version 2. This program is licensed "as is" without any warranty of any
8 * kind, whether express or implied.
9 *
10 * Leveraged code from the OMAP2 camera driver
11 * Video-for-Linux (Version 2) camera capture driver for
12 * the OMAP24xx camera controller.
13 *
14 * Author: Andy Lowe (source@mvista.com)
15 *
16 * Copyright (C) 2004 MontaVista Software, Inc.
17 * Copyright (C) 2010 Texas Instruments.
18 *
19 * History:
20 * 20-APR-2006 Khasim Modified VRFB based Rotation,
21 * The image data is always read from 0 degree
22 * view and written
23 * to the virtual space of desired rotation angle
24 * 4-DEC-2006 Jian Changed to support better memory management
25 *
26 * 17-Nov-2008 Hardik Changed driver to use video_ioctl2
27 *
28 * 23-Feb-2010 Vaibhav H Modified to use new DSS2 interface
29 *
30 */
31
32 #include <linux/init.h>
33 #include <linux/module.h>
34 #include <linux/vmalloc.h>
35 #include <linux/sched.h>
36 #include <linux/types.h>
37 #include <linux/platform_device.h>
38 #include <linux/irq.h>
39 #include <linux/videodev2.h>
40 #include <linux/dma-mapping.h>
41 #include <linux/slab.h>
42
43 #include <media/videobuf-dma-contig.h>
44 #include <media/v4l2-device.h>
45 #include <media/v4l2-ioctl.h>
46
47 #include <plat/cpu.h>
48 #include <plat/dma.h>
49 #include <plat/vrfb.h>
50 #include <video/omapdss.h>
51
52 #include "omap_voutlib.h"
53 #include "omap_voutdef.h"
54 #include "omap_vout_vrfb.h"
55
56 MODULE_AUTHOR("Texas Instruments");
57 MODULE_DESCRIPTION("OMAP Video for Linux Video out driver");
58 MODULE_LICENSE("GPL");
59
60 /* Driver Configuration macros */
61 #define VOUT_NAME "omap_vout"
62
63 enum omap_vout_channels {
64 OMAP_VIDEO1,
65 OMAP_VIDEO2,
66 };
67
68 static struct videobuf_queue_ops video_vbq_ops;
69 /* Variables configurable through module params*/
70 static u32 video1_numbuffers = 3;
71 static u32 video2_numbuffers = 3;
72 static u32 video1_bufsize = OMAP_VOUT_MAX_BUF_SIZE;
73 static u32 video2_bufsize = OMAP_VOUT_MAX_BUF_SIZE;
74 static bool vid1_static_vrfb_alloc;
75 static bool vid2_static_vrfb_alloc;
76 static bool debug;
77
78 /* Module parameters */
79 module_param(video1_numbuffers, uint, S_IRUGO);
80 MODULE_PARM_DESC(video1_numbuffers,
81 "Number of buffers to be allocated at init time for Video1 device.");
82
83 module_param(video2_numbuffers, uint, S_IRUGO);
84 MODULE_PARM_DESC(video2_numbuffers,
85 "Number of buffers to be allocated at init time for Video2 device.");
86
87 module_param(video1_bufsize, uint, S_IRUGO);
88 MODULE_PARM_DESC(video1_bufsize,
89 "Size of the buffer to be allocated for video1 device");
90
91 module_param(video2_bufsize, uint, S_IRUGO);
92 MODULE_PARM_DESC(video2_bufsize,
93 "Size of the buffer to be allocated for video2 device");
94
95 module_param(vid1_static_vrfb_alloc, bool, S_IRUGO);
96 MODULE_PARM_DESC(vid1_static_vrfb_alloc,
97 "Static allocation of the VRFB buffer for video1 device");
98
99 module_param(vid2_static_vrfb_alloc, bool, S_IRUGO);
100 MODULE_PARM_DESC(vid2_static_vrfb_alloc,
101 "Static allocation of the VRFB buffer for video2 device");
102
103 module_param(debug, bool, S_IRUGO);
104 MODULE_PARM_DESC(debug, "Debug level (0-1)");
105
106 /* list of image formats supported by OMAP2 video pipelines */
107 static const struct v4l2_fmtdesc omap_formats[] = {
108 {
109 /* Note: V4L2 defines RGB565 as:
110 *
111 * Byte 0 Byte 1
112 * g2 g1 g0 r4 r3 r2 r1 r0 b4 b3 b2 b1 b0 g5 g4 g3
113 *
114 * We interpret RGB565 as:
115 *
116 * Byte 0 Byte 1
117 * g2 g1 g0 b4 b3 b2 b1 b0 r4 r3 r2 r1 r0 g5 g4 g3
118 */
119 .description = "RGB565, le",
120 .pixelformat = V4L2_PIX_FMT_RGB565,
121 },
122 {
123 /* Note: V4L2 defines RGB32 as: RGB-8-8-8-8 we use
124 * this for RGB24 unpack mode, the last 8 bits are ignored
125 * */
126 .description = "RGB32, le",
127 .pixelformat = V4L2_PIX_FMT_RGB32,
128 },
129 {
130 /* Note: V4L2 defines RGB24 as: RGB-8-8-8 we use
131 * this for RGB24 packed mode
132 *
133 */
134 .description = "RGB24, le",
135 .pixelformat = V4L2_PIX_FMT_RGB24,
136 },
137 {
138 .description = "YUYV (YUV 4:2:2), packed",
139 .pixelformat = V4L2_PIX_FMT_YUYV,
140 },
141 {
142 .description = "UYVY, packed",
143 .pixelformat = V4L2_PIX_FMT_UYVY,
144 },
145 };
146
147 #define NUM_OUTPUT_FORMATS (ARRAY_SIZE(omap_formats))
148
149 /*
150 * Try format
151 */
152 static int omap_vout_try_format(struct v4l2_pix_format *pix)
153 {
154 int ifmt, bpp = 0;
155
156 pix->height = clamp(pix->height, (u32)VID_MIN_HEIGHT,
157 (u32)VID_MAX_HEIGHT);
158 pix->width = clamp(pix->width, (u32)VID_MIN_WIDTH, (u32)VID_MAX_WIDTH);
159
160 for (ifmt = 0; ifmt < NUM_OUTPUT_FORMATS; ifmt++) {
161 if (pix->pixelformat == omap_formats[ifmt].pixelformat)
162 break;
163 }
164
165 if (ifmt == NUM_OUTPUT_FORMATS)
166 ifmt = 0;
167
168 pix->pixelformat = omap_formats[ifmt].pixelformat;
169 pix->field = V4L2_FIELD_ANY;
170 pix->priv = 0;
171
172 switch (pix->pixelformat) {
173 case V4L2_PIX_FMT_YUYV:
174 case V4L2_PIX_FMT_UYVY:
175 default:
176 pix->colorspace = V4L2_COLORSPACE_JPEG;
177 bpp = YUYV_BPP;
178 break;
179 case V4L2_PIX_FMT_RGB565:
180 case V4L2_PIX_FMT_RGB565X:
181 pix->colorspace = V4L2_COLORSPACE_SRGB;
182 bpp = RGB565_BPP;
183 break;
184 case V4L2_PIX_FMT_RGB24:
185 pix->colorspace = V4L2_COLORSPACE_SRGB;
186 bpp = RGB24_BPP;
187 break;
188 case V4L2_PIX_FMT_RGB32:
189 case V4L2_PIX_FMT_BGR32:
190 pix->colorspace = V4L2_COLORSPACE_SRGB;
191 bpp = RGB32_BPP;
192 break;
193 }
194 pix->bytesperline = pix->width * bpp;
195 pix->sizeimage = pix->bytesperline * pix->height;
196
197 return bpp;
198 }
199
200 /*
201 * omap_vout_uservirt_to_phys: This inline function is used to convert user
202 * space virtual address to physical address.
203 */
204 static u32 omap_vout_uservirt_to_phys(u32 virtp)
205 {
206 unsigned long physp = 0;
207 struct vm_area_struct *vma;
208 struct mm_struct *mm = current->mm;
209
210 vma = find_vma(mm, virtp);
211 /* For kernel direct-mapped memory, take the easy way */
212 if (virtp >= PAGE_OFFSET) {
213 physp = virt_to_phys((void *) virtp);
214 } else if (vma && (vma->vm_flags & VM_IO) && vma->vm_pgoff) {
215 /* this will catch, kernel-allocated, mmaped-to-usermode
216 addresses */
217 physp = (vma->vm_pgoff << PAGE_SHIFT) + (virtp - vma->vm_start);
218 } else {
219 /* otherwise, use get_user_pages() for general userland pages */
220 int res, nr_pages = 1;
221 struct page *pages;
222 down_read(&current->mm->mmap_sem);
223
224 res = get_user_pages(current, current->mm, virtp, nr_pages, 1,
225 0, &pages, NULL);
226 up_read(&current->mm->mmap_sem);
227
228 if (res == nr_pages) {
229 physp = __pa(page_address(&pages[0]) +
230 (virtp & ~PAGE_MASK));
231 } else {
232 printk(KERN_WARNING VOUT_NAME
233 "get_user_pages failed\n");
234 return 0;
235 }
236 }
237
238 return physp;
239 }
240
241 /*
242 * Free the V4L2 buffers
243 */
244 void omap_vout_free_buffers(struct omap_vout_device *vout)
245 {
246 int i, numbuffers;
247
248 /* Allocate memory for the buffers */
249 numbuffers = (vout->vid) ? video2_numbuffers : video1_numbuffers;
250 vout->buffer_size = (vout->vid) ? video2_bufsize : video1_bufsize;
251
252 for (i = 0; i < numbuffers; i++) {
253 omap_vout_free_buffer(vout->buf_virt_addr[i],
254 vout->buffer_size);
255 vout->buf_phy_addr[i] = 0;
256 vout->buf_virt_addr[i] = 0;
257 }
258 }
259
260 /*
261 * Convert V4L2 rotation to DSS rotation
262 * V4L2 understand 0, 90, 180, 270.
263 * Convert to 0, 1, 2 and 3 respectively for DSS
264 */
265 static int v4l2_rot_to_dss_rot(int v4l2_rotation,
266 enum dss_rotation *rotation, bool mirror)
267 {
268 int ret = 0;
269
270 switch (v4l2_rotation) {
271 case 90:
272 *rotation = dss_rotation_90_degree;
273 break;
274 case 180:
275 *rotation = dss_rotation_180_degree;
276 break;
277 case 270:
278 *rotation = dss_rotation_270_degree;
279 break;
280 case 0:
281 *rotation = dss_rotation_0_degree;
282 break;
283 default:
284 ret = -EINVAL;
285 }
286 return ret;
287 }
288
289 static int omap_vout_calculate_offset(struct omap_vout_device *vout)
290 {
291 struct omapvideo_info *ovid;
292 struct v4l2_rect *crop = &vout->crop;
293 struct v4l2_pix_format *pix = &vout->pix;
294 int *cropped_offset = &vout->cropped_offset;
295 int ps = 2, line_length = 0;
296
297 ovid = &vout->vid_info;
298
299 if (ovid->rotation_type == VOUT_ROT_VRFB) {
300 omap_vout_calculate_vrfb_offset(vout);
301 } else {
302 vout->line_length = line_length = pix->width;
303
304 if (V4L2_PIX_FMT_YUYV == pix->pixelformat ||
305 V4L2_PIX_FMT_UYVY == pix->pixelformat)
306 ps = 2;
307 else if (V4L2_PIX_FMT_RGB32 == pix->pixelformat)
308 ps = 4;
309 else if (V4L2_PIX_FMT_RGB24 == pix->pixelformat)
310 ps = 3;
311
312 vout->ps = ps;
313
314 *cropped_offset = (line_length * ps) *
315 crop->top + crop->left * ps;
316 }
317
318 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "%s Offset:%x\n",
319 __func__, vout->cropped_offset);
320
321 return 0;
322 }
323
324 /*
325 * Convert V4L2 pixel format to DSS pixel format
326 */
327 static int video_mode_to_dss_mode(struct omap_vout_device *vout)
328 {
329 struct omap_overlay *ovl;
330 struct omapvideo_info *ovid;
331 struct v4l2_pix_format *pix = &vout->pix;
332 enum omap_color_mode mode;
333
334 ovid = &vout->vid_info;
335 ovl = ovid->overlays[0];
336
337 switch (pix->pixelformat) {
338 case 0:
339 break;
340 case V4L2_PIX_FMT_YUYV:
341 mode = OMAP_DSS_COLOR_YUV2;
342 break;
343 case V4L2_PIX_FMT_UYVY:
344 mode = OMAP_DSS_COLOR_UYVY;
345 break;
346 case V4L2_PIX_FMT_RGB565:
347 mode = OMAP_DSS_COLOR_RGB16;
348 break;
349 case V4L2_PIX_FMT_RGB24:
350 mode = OMAP_DSS_COLOR_RGB24P;
351 break;
352 case V4L2_PIX_FMT_RGB32:
353 mode = (ovl->id == OMAP_DSS_VIDEO1) ?
354 OMAP_DSS_COLOR_RGB24U : OMAP_DSS_COLOR_ARGB32;
355 break;
356 case V4L2_PIX_FMT_BGR32:
357 mode = OMAP_DSS_COLOR_RGBX32;
358 break;
359 default:
360 mode = -EINVAL;
361 }
362 return mode;
363 }
364
365 /*
366 * Setup the overlay
367 */
368 static int omapvid_setup_overlay(struct omap_vout_device *vout,
369 struct omap_overlay *ovl, int posx, int posy, int outw,
370 int outh, u32 addr)
371 {
372 int ret = 0;
373 struct omap_overlay_info info;
374 int cropheight, cropwidth, pixheight, pixwidth;
375
376 if ((ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0 &&
377 (outw != vout->pix.width || outh != vout->pix.height)) {
378 ret = -EINVAL;
379 goto setup_ovl_err;
380 }
381
382 vout->dss_mode = video_mode_to_dss_mode(vout);
383 if (vout->dss_mode == -EINVAL) {
384 ret = -EINVAL;
385 goto setup_ovl_err;
386 }
387
388 /* Setup the input plane parameters according to
389 * rotation value selected.
390 */
391 if (is_rotation_90_or_270(vout)) {
392 cropheight = vout->crop.width;
393 cropwidth = vout->crop.height;
394 pixheight = vout->pix.width;
395 pixwidth = vout->pix.height;
396 } else {
397 cropheight = vout->crop.height;
398 cropwidth = vout->crop.width;
399 pixheight = vout->pix.height;
400 pixwidth = vout->pix.width;
401 }
402
403 ovl->get_overlay_info(ovl, &info);
404 info.paddr = addr;
405 info.width = cropwidth;
406 info.height = cropheight;
407 info.color_mode = vout->dss_mode;
408 info.mirror = vout->mirror;
409 info.pos_x = posx;
410 info.pos_y = posy;
411 info.out_width = outw;
412 info.out_height = outh;
413 info.global_alpha = vout->win.global_alpha;
414 if (!is_rotation_enabled(vout)) {
415 info.rotation = 0;
416 info.rotation_type = OMAP_DSS_ROT_DMA;
417 info.screen_width = pixwidth;
418 } else {
419 info.rotation = vout->rotation;
420 info.rotation_type = OMAP_DSS_ROT_VRFB;
421 info.screen_width = 2048;
422 }
423
424 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
425 "%s enable=%d addr=%x width=%d\n height=%d color_mode=%d\n"
426 "rotation=%d mirror=%d posx=%d posy=%d out_width = %d \n"
427 "out_height=%d rotation_type=%d screen_width=%d\n",
428 __func__, ovl->is_enabled(ovl), info.paddr, info.width, info.height,
429 info.color_mode, info.rotation, info.mirror, info.pos_x,
430 info.pos_y, info.out_width, info.out_height, info.rotation_type,
431 info.screen_width);
432
433 ret = ovl->set_overlay_info(ovl, &info);
434 if (ret)
435 goto setup_ovl_err;
436
437 return 0;
438
439 setup_ovl_err:
440 v4l2_warn(&vout->vid_dev->v4l2_dev, "setup_overlay failed\n");
441 return ret;
442 }
443
444 /*
445 * Initialize the overlay structure
446 */
447 static int omapvid_init(struct omap_vout_device *vout, u32 addr)
448 {
449 int ret = 0, i;
450 struct v4l2_window *win;
451 struct omap_overlay *ovl;
452 int posx, posy, outw, outh, temp;
453 struct omap_video_timings *timing;
454 struct omapvideo_info *ovid = &vout->vid_info;
455
456 win = &vout->win;
457 for (i = 0; i < ovid->num_overlays; i++) {
458 ovl = ovid->overlays[i];
459 if (!ovl->manager || !ovl->manager->device)
460 return -EINVAL;
461
462 timing = &ovl->manager->device->panel.timings;
463
464 outw = win->w.width;
465 outh = win->w.height;
466 switch (vout->rotation) {
467 case dss_rotation_90_degree:
468 /* Invert the height and width for 90
469 * and 270 degree rotation
470 */
471 temp = outw;
472 outw = outh;
473 outh = temp;
474 posy = (timing->y_res - win->w.width) - win->w.left;
475 posx = win->w.top;
476 break;
477
478 case dss_rotation_180_degree:
479 posx = (timing->x_res - win->w.width) - win->w.left;
480 posy = (timing->y_res - win->w.height) - win->w.top;
481 break;
482
483 case dss_rotation_270_degree:
484 temp = outw;
485 outw = outh;
486 outh = temp;
487 posy = win->w.left;
488 posx = (timing->x_res - win->w.height) - win->w.top;
489 break;
490
491 default:
492 posx = win->w.left;
493 posy = win->w.top;
494 break;
495 }
496
497 ret = omapvid_setup_overlay(vout, ovl, posx, posy,
498 outw, outh, addr);
499 if (ret)
500 goto omapvid_init_err;
501 }
502 return 0;
503
504 omapvid_init_err:
505 v4l2_warn(&vout->vid_dev->v4l2_dev, "apply_changes failed\n");
506 return ret;
507 }
508
509 /*
510 * Apply the changes set the go bit of DSS
511 */
512 static int omapvid_apply_changes(struct omap_vout_device *vout)
513 {
514 int i;
515 struct omap_overlay *ovl;
516 struct omapvideo_info *ovid = &vout->vid_info;
517
518 for (i = 0; i < ovid->num_overlays; i++) {
519 ovl = ovid->overlays[i];
520 if (!ovl->manager || !ovl->manager->device)
521 return -EINVAL;
522 ovl->manager->apply(ovl->manager);
523 }
524
525 return 0;
526 }
527
528 static int omapvid_handle_interlace_display(struct omap_vout_device *vout,
529 unsigned int irqstatus, struct timeval timevalue)
530 {
531 u32 fid;
532
533 if (vout->first_int) {
534 vout->first_int = 0;
535 goto err;
536 }
537
538 if (irqstatus & DISPC_IRQ_EVSYNC_ODD)
539 fid = 1;
540 else if (irqstatus & DISPC_IRQ_EVSYNC_EVEN)
541 fid = 0;
542 else
543 goto err;
544
545 vout->field_id ^= 1;
546 if (fid != vout->field_id) {
547 if (fid == 0)
548 vout->field_id = fid;
549 } else if (0 == fid) {
550 if (vout->cur_frm == vout->next_frm)
551 goto err;
552
553 vout->cur_frm->ts = timevalue;
554 vout->cur_frm->state = VIDEOBUF_DONE;
555 wake_up_interruptible(&vout->cur_frm->done);
556 vout->cur_frm = vout->next_frm;
557 } else {
558 if (list_empty(&vout->dma_queue) ||
559 (vout->cur_frm != vout->next_frm))
560 goto err;
561 }
562
563 return vout->field_id;
564 err:
565 return 0;
566 }
567
568 static void omap_vout_isr(void *arg, unsigned int irqstatus)
569 {
570 int ret, fid, mgr_id;
571 u32 addr, irq;
572 struct omap_overlay *ovl;
573 struct timeval timevalue;
574 struct omapvideo_info *ovid;
575 struct omap_dss_device *cur_display;
576 struct omap_vout_device *vout = (struct omap_vout_device *)arg;
577
578 if (!vout->streaming)
579 return;
580
581 ovid = &vout->vid_info;
582 ovl = ovid->overlays[0];
583 /* get the display device attached to the overlay */
584 if (!ovl->manager || !ovl->manager->device)
585 return;
586
587 mgr_id = ovl->manager->id;
588 cur_display = ovl->manager->device;
589
590 spin_lock(&vout->vbq_lock);
591 do_gettimeofday(&timevalue);
592
593 switch (cur_display->type) {
594 case OMAP_DISPLAY_TYPE_DSI:
595 case OMAP_DISPLAY_TYPE_DPI:
596 if (mgr_id == OMAP_DSS_CHANNEL_LCD)
597 irq = DISPC_IRQ_VSYNC;
598 else if (mgr_id == OMAP_DSS_CHANNEL_LCD2)
599 irq = DISPC_IRQ_VSYNC2;
600 else
601 goto vout_isr_err;
602
603 if (!(irqstatus & irq))
604 goto vout_isr_err;
605 break;
606 case OMAP_DISPLAY_TYPE_VENC:
607 fid = omapvid_handle_interlace_display(vout, irqstatus,
608 timevalue);
609 if (!fid)
610 goto vout_isr_err;
611 break;
612 case OMAP_DISPLAY_TYPE_HDMI:
613 if (!(irqstatus & DISPC_IRQ_EVSYNC_EVEN))
614 goto vout_isr_err;
615 break;
616 default:
617 goto vout_isr_err;
618 }
619
620 if (!vout->first_int && (vout->cur_frm != vout->next_frm)) {
621 vout->cur_frm->ts = timevalue;
622 vout->cur_frm->state = VIDEOBUF_DONE;
623 wake_up_interruptible(&vout->cur_frm->done);
624 vout->cur_frm = vout->next_frm;
625 }
626
627 vout->first_int = 0;
628 if (list_empty(&vout->dma_queue))
629 goto vout_isr_err;
630
631 vout->next_frm = list_entry(vout->dma_queue.next,
632 struct videobuf_buffer, queue);
633 list_del(&vout->next_frm->queue);
634
635 vout->next_frm->state = VIDEOBUF_ACTIVE;
636
637 addr = (unsigned long) vout->queued_buf_addr[vout->next_frm->i]
638 + vout->cropped_offset;
639
640 /* First save the configuration in ovelray structure */
641 ret = omapvid_init(vout, addr);
642 if (ret)
643 printk(KERN_ERR VOUT_NAME
644 "failed to set overlay info\n");
645 /* Enable the pipeline and set the Go bit */
646 ret = omapvid_apply_changes(vout);
647 if (ret)
648 printk(KERN_ERR VOUT_NAME "failed to change mode\n");
649
650 vout_isr_err:
651 spin_unlock(&vout->vbq_lock);
652 }
653
654 /* Video buffer call backs */
655
656 /*
657 * Buffer setup function is called by videobuf layer when REQBUF ioctl is
658 * called. This is used to setup buffers and return size and count of
659 * buffers allocated. After the call to this buffer, videobuf layer will
660 * setup buffer queue depending on the size and count of buffers
661 */
662 static int omap_vout_buffer_setup(struct videobuf_queue *q, unsigned int *count,
663 unsigned int *size)
664 {
665 int startindex = 0, i, j;
666 u32 phy_addr = 0, virt_addr = 0;
667 struct omap_vout_device *vout = q->priv_data;
668 struct omapvideo_info *ovid = &vout->vid_info;
669 int vid_max_buf_size;
670
671 if (!vout)
672 return -EINVAL;
673
674 vid_max_buf_size = vout->vid == OMAP_VIDEO1 ? video1_bufsize :
675 video2_bufsize;
676
677 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != q->type)
678 return -EINVAL;
679
680 startindex = (vout->vid == OMAP_VIDEO1) ?
681 video1_numbuffers : video2_numbuffers;
682 if (V4L2_MEMORY_MMAP == vout->memory && *count < startindex)
683 *count = startindex;
684
685 if (ovid->rotation_type == VOUT_ROT_VRFB) {
686 if (omap_vout_vrfb_buffer_setup(vout, count, startindex))
687 return -ENOMEM;
688 }
689
690 if (V4L2_MEMORY_MMAP != vout->memory)
691 return 0;
692
693 /* Now allocated the V4L2 buffers */
694 *size = PAGE_ALIGN(vout->pix.width * vout->pix.height * vout->bpp);
695 startindex = (vout->vid == OMAP_VIDEO1) ?
696 video1_numbuffers : video2_numbuffers;
697
698 /* Check the size of the buffer */
699 if (*size > vid_max_buf_size) {
700 v4l2_err(&vout->vid_dev->v4l2_dev,
701 "buffer allocation mismatch [%u] [%u]\n",
702 *size, vout->buffer_size);
703 return -ENOMEM;
704 }
705
706 for (i = startindex; i < *count; i++) {
707 vout->buffer_size = *size;
708
709 virt_addr = omap_vout_alloc_buffer(vout->buffer_size,
710 &phy_addr);
711 if (!virt_addr) {
712 if (ovid->rotation_type == VOUT_ROT_NONE) {
713 break;
714 } else {
715 if (!is_rotation_enabled(vout))
716 break;
717 /* Free the VRFB buffers if no space for V4L2 buffers */
718 for (j = i; j < *count; j++) {
719 omap_vout_free_buffer(
720 vout->smsshado_virt_addr[j],
721 vout->smsshado_size);
722 vout->smsshado_virt_addr[j] = 0;
723 vout->smsshado_phy_addr[j] = 0;
724 }
725 }
726 }
727 vout->buf_virt_addr[i] = virt_addr;
728 vout->buf_phy_addr[i] = phy_addr;
729 }
730 *count = vout->buffer_allocated = i;
731
732 return 0;
733 }
734
735 /*
736 * Free the V4L2 buffers additionally allocated than default
737 * number of buffers
738 */
739 static void omap_vout_free_extra_buffers(struct omap_vout_device *vout)
740 {
741 int num_buffers = 0, i;
742
743 num_buffers = (vout->vid == OMAP_VIDEO1) ?
744 video1_numbuffers : video2_numbuffers;
745
746 for (i = num_buffers; i < vout->buffer_allocated; i++) {
747 if (vout->buf_virt_addr[i])
748 omap_vout_free_buffer(vout->buf_virt_addr[i],
749 vout->buffer_size);
750
751 vout->buf_virt_addr[i] = 0;
752 vout->buf_phy_addr[i] = 0;
753 }
754 vout->buffer_allocated = num_buffers;
755 }
756
757 /*
758 * This function will be called when VIDIOC_QBUF ioctl is called.
759 * It prepare buffers before give out for the display. This function
760 * converts user space virtual address into physical address if userptr memory
761 * exchange mechanism is used. If rotation is enabled, it copies entire
762 * buffer into VRFB memory space before giving it to the DSS.
763 */
764 static int omap_vout_buffer_prepare(struct videobuf_queue *q,
765 struct videobuf_buffer *vb,
766 enum v4l2_field field)
767 {
768 struct omap_vout_device *vout = q->priv_data;
769 struct omapvideo_info *ovid = &vout->vid_info;
770
771 if (VIDEOBUF_NEEDS_INIT == vb->state) {
772 vb->width = vout->pix.width;
773 vb->height = vout->pix.height;
774 vb->size = vb->width * vb->height * vout->bpp;
775 vb->field = field;
776 }
777 vb->state = VIDEOBUF_PREPARED;
778 /* if user pointer memory mechanism is used, get the physical
779 * address of the buffer
780 */
781 if (V4L2_MEMORY_USERPTR == vb->memory) {
782 if (0 == vb->baddr)
783 return -EINVAL;
784 /* Physical address */
785 vout->queued_buf_addr[vb->i] = (u8 *)
786 omap_vout_uservirt_to_phys(vb->baddr);
787 } else {
788 u32 addr, dma_addr;
789 unsigned long size;
790
791 addr = (unsigned long) vout->buf_virt_addr[vb->i];
792 size = (unsigned long) vb->size;
793
794 dma_addr = dma_map_single(vout->vid_dev->v4l2_dev.dev, (void *) addr,
795 size, DMA_TO_DEVICE);
796 if (dma_mapping_error(vout->vid_dev->v4l2_dev.dev, dma_addr))
797 v4l2_err(&vout->vid_dev->v4l2_dev, "dma_map_single failed\n");
798
799 vout->queued_buf_addr[vb->i] = (u8 *)vout->buf_phy_addr[vb->i];
800 }
801
802 if (ovid->rotation_type == VOUT_ROT_VRFB)
803 return omap_vout_prepare_vrfb(vout, vb);
804 else
805 return 0;
806 }
807
808 /*
809 * Buffer queue function will be called from the videobuf layer when _QBUF
810 * ioctl is called. It is used to enqueue buffer, which is ready to be
811 * displayed.
812 */
813 static void omap_vout_buffer_queue(struct videobuf_queue *q,
814 struct videobuf_buffer *vb)
815 {
816 struct omap_vout_device *vout = q->priv_data;
817
818 /* Driver is also maintainig a queue. So enqueue buffer in the driver
819 * queue */
820 list_add_tail(&vb->queue, &vout->dma_queue);
821
822 vb->state = VIDEOBUF_QUEUED;
823 }
824
825 /*
826 * Buffer release function is called from videobuf layer to release buffer
827 * which are already allocated
828 */
829 static void omap_vout_buffer_release(struct videobuf_queue *q,
830 struct videobuf_buffer *vb)
831 {
832 struct omap_vout_device *vout = q->priv_data;
833
834 vb->state = VIDEOBUF_NEEDS_INIT;
835
836 if (V4L2_MEMORY_MMAP != vout->memory)
837 return;
838 }
839
840 /*
841 * File operations
842 */
843 static unsigned int omap_vout_poll(struct file *file,
844 struct poll_table_struct *wait)
845 {
846 struct omap_vout_device *vout = file->private_data;
847 struct videobuf_queue *q = &vout->vbq;
848
849 return videobuf_poll_stream(file, q, wait);
850 }
851
852 static void omap_vout_vm_open(struct vm_area_struct *vma)
853 {
854 struct omap_vout_device *vout = vma->vm_private_data;
855
856 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
857 "vm_open [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
858 vout->mmap_count++;
859 }
860
861 static void omap_vout_vm_close(struct vm_area_struct *vma)
862 {
863 struct omap_vout_device *vout = vma->vm_private_data;
864
865 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
866 "vm_close [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
867 vout->mmap_count--;
868 }
869
870 static struct vm_operations_struct omap_vout_vm_ops = {
871 .open = omap_vout_vm_open,
872 .close = omap_vout_vm_close,
873 };
874
875 static int omap_vout_mmap(struct file *file, struct vm_area_struct *vma)
876 {
877 int i;
878 void *pos;
879 unsigned long start = vma->vm_start;
880 unsigned long size = (vma->vm_end - vma->vm_start);
881 struct omap_vout_device *vout = file->private_data;
882 struct videobuf_queue *q = &vout->vbq;
883
884 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
885 " %s pgoff=0x%lx, start=0x%lx, end=0x%lx\n", __func__,
886 vma->vm_pgoff, vma->vm_start, vma->vm_end);
887
888 /* look for the buffer to map */
889 for (i = 0; i < VIDEO_MAX_FRAME; i++) {
890 if (NULL == q->bufs[i])
891 continue;
892 if (V4L2_MEMORY_MMAP != q->bufs[i]->memory)
893 continue;
894 if (q->bufs[i]->boff == (vma->vm_pgoff << PAGE_SHIFT))
895 break;
896 }
897
898 if (VIDEO_MAX_FRAME == i) {
899 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
900 "offset invalid [offset=0x%lx]\n",
901 (vma->vm_pgoff << PAGE_SHIFT));
902 return -EINVAL;
903 }
904 /* Check the size of the buffer */
905 if (size > vout->buffer_size) {
906 v4l2_err(&vout->vid_dev->v4l2_dev,
907 "insufficient memory [%lu] [%u]\n",
908 size, vout->buffer_size);
909 return -ENOMEM;
910 }
911
912 q->bufs[i]->baddr = vma->vm_start;
913
914 vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
915 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
916 vma->vm_ops = &omap_vout_vm_ops;
917 vma->vm_private_data = (void *) vout;
918 pos = (void *)vout->buf_virt_addr[i];
919 vma->vm_pgoff = virt_to_phys((void *)pos) >> PAGE_SHIFT;
920 while (size > 0) {
921 unsigned long pfn;
922 pfn = virt_to_phys((void *) pos) >> PAGE_SHIFT;
923 if (remap_pfn_range(vma, start, pfn, PAGE_SIZE, PAGE_SHARED))
924 return -EAGAIN;
925 start += PAGE_SIZE;
926 pos += PAGE_SIZE;
927 size -= PAGE_SIZE;
928 }
929 vout->mmap_count++;
930 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
931
932 return 0;
933 }
934
935 static int omap_vout_release(struct file *file)
936 {
937 unsigned int ret, i;
938 struct videobuf_queue *q;
939 struct omapvideo_info *ovid;
940 struct omap_vout_device *vout = file->private_data;
941
942 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
943 ovid = &vout->vid_info;
944
945 if (!vout)
946 return 0;
947
948 q = &vout->vbq;
949 /* Disable all the overlay managers connected with this interface */
950 for (i = 0; i < ovid->num_overlays; i++) {
951 struct omap_overlay *ovl = ovid->overlays[i];
952 if (ovl->manager && ovl->manager->device)
953 ovl->disable(ovl);
954 }
955 /* Turn off the pipeline */
956 ret = omapvid_apply_changes(vout);
957 if (ret)
958 v4l2_warn(&vout->vid_dev->v4l2_dev,
959 "Unable to apply changes\n");
960
961 /* Free all buffers */
962 omap_vout_free_extra_buffers(vout);
963
964 /* Free the VRFB buffers only if they are allocated
965 * during reqbufs. Don't free if init time allocated
966 */
967 if (ovid->rotation_type == VOUT_ROT_VRFB) {
968 if (!vout->vrfb_static_allocation)
969 omap_vout_free_vrfb_buffers(vout);
970 }
971 videobuf_mmap_free(q);
972
973 /* Even if apply changes fails we should continue
974 freeing allocated memory */
975 if (vout->streaming) {
976 u32 mask = 0;
977
978 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN |
979 DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_VSYNC2;
980 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
981 vout->streaming = 0;
982
983 videobuf_streamoff(q);
984 videobuf_queue_cancel(q);
985 }
986
987 if (vout->mmap_count != 0)
988 vout->mmap_count = 0;
989
990 vout->opened -= 1;
991 file->private_data = NULL;
992
993 if (vout->buffer_allocated)
994 videobuf_mmap_free(q);
995
996 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
997 return ret;
998 }
999
1000 static int omap_vout_open(struct file *file)
1001 {
1002 struct videobuf_queue *q;
1003 struct omap_vout_device *vout = NULL;
1004
1005 vout = video_drvdata(file);
1006 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
1007
1008 if (vout == NULL)
1009 return -ENODEV;
1010
1011 /* for now, we only support single open */
1012 if (vout->opened)
1013 return -EBUSY;
1014
1015 vout->opened += 1;
1016
1017 file->private_data = vout;
1018 vout->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1019
1020 q = &vout->vbq;
1021 video_vbq_ops.buf_setup = omap_vout_buffer_setup;
1022 video_vbq_ops.buf_prepare = omap_vout_buffer_prepare;
1023 video_vbq_ops.buf_release = omap_vout_buffer_release;
1024 video_vbq_ops.buf_queue = omap_vout_buffer_queue;
1025 spin_lock_init(&vout->vbq_lock);
1026
1027 videobuf_queue_dma_contig_init(q, &video_vbq_ops, q->dev,
1028 &vout->vbq_lock, vout->type, V4L2_FIELD_NONE,
1029 sizeof(struct videobuf_buffer), vout, NULL);
1030
1031 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1032 return 0;
1033 }
1034
1035 /*
1036 * V4L2 ioctls
1037 */
1038 static int vidioc_querycap(struct file *file, void *fh,
1039 struct v4l2_capability *cap)
1040 {
1041 struct omap_vout_device *vout = fh;
1042
1043 strlcpy(cap->driver, VOUT_NAME, sizeof(cap->driver));
1044 strlcpy(cap->card, vout->vfd->name, sizeof(cap->card));
1045 cap->bus_info[0] = '\0';
1046 cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_OUTPUT |
1047 V4L2_CAP_VIDEO_OUTPUT_OVERLAY;
1048
1049 return 0;
1050 }
1051
1052 static int vidioc_enum_fmt_vid_out(struct file *file, void *fh,
1053 struct v4l2_fmtdesc *fmt)
1054 {
1055 int index = fmt->index;
1056
1057 if (index >= NUM_OUTPUT_FORMATS)
1058 return -EINVAL;
1059
1060 fmt->flags = omap_formats[index].flags;
1061 strlcpy(fmt->description, omap_formats[index].description,
1062 sizeof(fmt->description));
1063 fmt->pixelformat = omap_formats[index].pixelformat;
1064
1065 return 0;
1066 }
1067
1068 static int vidioc_g_fmt_vid_out(struct file *file, void *fh,
1069 struct v4l2_format *f)
1070 {
1071 struct omap_vout_device *vout = fh;
1072
1073 f->fmt.pix = vout->pix;
1074 return 0;
1075
1076 }
1077
1078 static int vidioc_try_fmt_vid_out(struct file *file, void *fh,
1079 struct v4l2_format *f)
1080 {
1081 struct omap_overlay *ovl;
1082 struct omapvideo_info *ovid;
1083 struct omap_video_timings *timing;
1084 struct omap_vout_device *vout = fh;
1085
1086 ovid = &vout->vid_info;
1087 ovl = ovid->overlays[0];
1088
1089 if (!ovl->manager || !ovl->manager->device)
1090 return -EINVAL;
1091 /* get the display device attached to the overlay */
1092 timing = &ovl->manager->device->panel.timings;
1093
1094 vout->fbuf.fmt.height = timing->y_res;
1095 vout->fbuf.fmt.width = timing->x_res;
1096
1097 omap_vout_try_format(&f->fmt.pix);
1098 return 0;
1099 }
1100
1101 static int vidioc_s_fmt_vid_out(struct file *file, void *fh,
1102 struct v4l2_format *f)
1103 {
1104 int ret, bpp;
1105 struct omap_overlay *ovl;
1106 struct omapvideo_info *ovid;
1107 struct omap_video_timings *timing;
1108 struct omap_vout_device *vout = fh;
1109
1110 if (vout->streaming)
1111 return -EBUSY;
1112
1113 mutex_lock(&vout->lock);
1114
1115 ovid = &vout->vid_info;
1116 ovl = ovid->overlays[0];
1117
1118 /* get the display device attached to the overlay */
1119 if (!ovl->manager || !ovl->manager->device) {
1120 ret = -EINVAL;
1121 goto s_fmt_vid_out_exit;
1122 }
1123 timing = &ovl->manager->device->panel.timings;
1124
1125 /* We dont support RGB24-packed mode if vrfb rotation
1126 * is enabled*/
1127 if ((is_rotation_enabled(vout)) &&
1128 f->fmt.pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1129 ret = -EINVAL;
1130 goto s_fmt_vid_out_exit;
1131 }
1132
1133 /* get the framebuffer parameters */
1134
1135 if (is_rotation_90_or_270(vout)) {
1136 vout->fbuf.fmt.height = timing->x_res;
1137 vout->fbuf.fmt.width = timing->y_res;
1138 } else {
1139 vout->fbuf.fmt.height = timing->y_res;
1140 vout->fbuf.fmt.width = timing->x_res;
1141 }
1142
1143 /* change to samller size is OK */
1144
1145 bpp = omap_vout_try_format(&f->fmt.pix);
1146 f->fmt.pix.sizeimage = f->fmt.pix.width * f->fmt.pix.height * bpp;
1147
1148 /* try & set the new output format */
1149 vout->bpp = bpp;
1150 vout->pix = f->fmt.pix;
1151 vout->vrfb_bpp = 1;
1152
1153 /* If YUYV then vrfb bpp is 2, for others its 1 */
1154 if (V4L2_PIX_FMT_YUYV == vout->pix.pixelformat ||
1155 V4L2_PIX_FMT_UYVY == vout->pix.pixelformat)
1156 vout->vrfb_bpp = 2;
1157
1158 /* set default crop and win */
1159 omap_vout_new_format(&vout->pix, &vout->fbuf, &vout->crop, &vout->win);
1160
1161 /* Save the changes in the overlay strcuture */
1162 ret = omapvid_init(vout, 0);
1163 if (ret) {
1164 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1165 goto s_fmt_vid_out_exit;
1166 }
1167
1168 ret = 0;
1169
1170 s_fmt_vid_out_exit:
1171 mutex_unlock(&vout->lock);
1172 return ret;
1173 }
1174
1175 static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh,
1176 struct v4l2_format *f)
1177 {
1178 int ret = 0;
1179 struct omap_vout_device *vout = fh;
1180 struct omap_overlay *ovl;
1181 struct omapvideo_info *ovid;
1182 struct v4l2_window *win = &f->fmt.win;
1183
1184 ovid = &vout->vid_info;
1185 ovl = ovid->overlays[0];
1186
1187 ret = omap_vout_try_window(&vout->fbuf, win);
1188
1189 if (!ret) {
1190 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1191 win->global_alpha = 255;
1192 else
1193 win->global_alpha = f->fmt.win.global_alpha;
1194 }
1195
1196 return ret;
1197 }
1198
1199 static int vidioc_s_fmt_vid_overlay(struct file *file, void *fh,
1200 struct v4l2_format *f)
1201 {
1202 int ret = 0;
1203 struct omap_overlay *ovl;
1204 struct omapvideo_info *ovid;
1205 struct omap_vout_device *vout = fh;
1206 struct v4l2_window *win = &f->fmt.win;
1207
1208 mutex_lock(&vout->lock);
1209 ovid = &vout->vid_info;
1210 ovl = ovid->overlays[0];
1211
1212 ret = omap_vout_new_window(&vout->crop, &vout->win, &vout->fbuf, win);
1213 if (!ret) {
1214 /* Video1 plane does not support global alpha on OMAP3 */
1215 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1216 vout->win.global_alpha = 255;
1217 else
1218 vout->win.global_alpha = f->fmt.win.global_alpha;
1219
1220 vout->win.chromakey = f->fmt.win.chromakey;
1221 }
1222 mutex_unlock(&vout->lock);
1223 return ret;
1224 }
1225
1226 static int vidioc_enum_fmt_vid_overlay(struct file *file, void *fh,
1227 struct v4l2_fmtdesc *fmt)
1228 {
1229 int index = fmt->index;
1230
1231 if (index >= NUM_OUTPUT_FORMATS)
1232 return -EINVAL;
1233
1234 fmt->flags = omap_formats[index].flags;
1235 strlcpy(fmt->description, omap_formats[index].description,
1236 sizeof(fmt->description));
1237 fmt->pixelformat = omap_formats[index].pixelformat;
1238 return 0;
1239 }
1240
1241 static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh,
1242 struct v4l2_format *f)
1243 {
1244 u32 key_value = 0;
1245 struct omap_overlay *ovl;
1246 struct omapvideo_info *ovid;
1247 struct omap_vout_device *vout = fh;
1248 struct omap_overlay_manager_info info;
1249 struct v4l2_window *win = &f->fmt.win;
1250
1251 ovid = &vout->vid_info;
1252 ovl = ovid->overlays[0];
1253
1254 win->w = vout->win.w;
1255 win->field = vout->win.field;
1256 win->global_alpha = vout->win.global_alpha;
1257
1258 if (ovl->manager && ovl->manager->get_manager_info) {
1259 ovl->manager->get_manager_info(ovl->manager, &info);
1260 key_value = info.trans_key;
1261 }
1262 win->chromakey = key_value;
1263 return 0;
1264 }
1265
1266 static int vidioc_cropcap(struct file *file, void *fh,
1267 struct v4l2_cropcap *cropcap)
1268 {
1269 struct omap_vout_device *vout = fh;
1270 struct v4l2_pix_format *pix = &vout->pix;
1271
1272 if (cropcap->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1273 return -EINVAL;
1274
1275 /* Width and height are always even */
1276 cropcap->bounds.width = pix->width & ~1;
1277 cropcap->bounds.height = pix->height & ~1;
1278
1279 omap_vout_default_crop(&vout->pix, &vout->fbuf, &cropcap->defrect);
1280 cropcap->pixelaspect.numerator = 1;
1281 cropcap->pixelaspect.denominator = 1;
1282 return 0;
1283 }
1284
1285 static int vidioc_g_crop(struct file *file, void *fh, struct v4l2_crop *crop)
1286 {
1287 struct omap_vout_device *vout = fh;
1288
1289 if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1290 return -EINVAL;
1291 crop->c = vout->crop;
1292 return 0;
1293 }
1294
1295 static int vidioc_s_crop(struct file *file, void *fh, const struct v4l2_crop *crop)
1296 {
1297 int ret = -EINVAL;
1298 struct omap_vout_device *vout = fh;
1299 struct omapvideo_info *ovid;
1300 struct omap_overlay *ovl;
1301 struct omap_video_timings *timing;
1302
1303 if (vout->streaming)
1304 return -EBUSY;
1305
1306 mutex_lock(&vout->lock);
1307 ovid = &vout->vid_info;
1308 ovl = ovid->overlays[0];
1309
1310 if (!ovl->manager || !ovl->manager->device) {
1311 ret = -EINVAL;
1312 goto s_crop_err;
1313 }
1314 /* get the display device attached to the overlay */
1315 timing = &ovl->manager->device->panel.timings;
1316
1317 if (is_rotation_90_or_270(vout)) {
1318 vout->fbuf.fmt.height = timing->x_res;
1319 vout->fbuf.fmt.width = timing->y_res;
1320 } else {
1321 vout->fbuf.fmt.height = timing->y_res;
1322 vout->fbuf.fmt.width = timing->x_res;
1323 }
1324
1325 if (crop->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1326 ret = omap_vout_new_crop(&vout->pix, &vout->crop, &vout->win,
1327 &vout->fbuf, &crop->c);
1328
1329 s_crop_err:
1330 mutex_unlock(&vout->lock);
1331 return ret;
1332 }
1333
1334 static int vidioc_queryctrl(struct file *file, void *fh,
1335 struct v4l2_queryctrl *ctrl)
1336 {
1337 int ret = 0;
1338
1339 switch (ctrl->id) {
1340 case V4L2_CID_ROTATE:
1341 ret = v4l2_ctrl_query_fill(ctrl, 0, 270, 90, 0);
1342 break;
1343 case V4L2_CID_BG_COLOR:
1344 ret = v4l2_ctrl_query_fill(ctrl, 0, 0xFFFFFF, 1, 0);
1345 break;
1346 case V4L2_CID_VFLIP:
1347 ret = v4l2_ctrl_query_fill(ctrl, 0, 1, 1, 0);
1348 break;
1349 default:
1350 ctrl->name[0] = '\0';
1351 ret = -EINVAL;
1352 }
1353 return ret;
1354 }
1355
1356 static int vidioc_g_ctrl(struct file *file, void *fh, struct v4l2_control *ctrl)
1357 {
1358 int ret = 0;
1359 struct omap_vout_device *vout = fh;
1360
1361 switch (ctrl->id) {
1362 case V4L2_CID_ROTATE:
1363 ctrl->value = vout->control[0].value;
1364 break;
1365 case V4L2_CID_BG_COLOR:
1366 {
1367 struct omap_overlay_manager_info info;
1368 struct omap_overlay *ovl;
1369
1370 ovl = vout->vid_info.overlays[0];
1371 if (!ovl->manager || !ovl->manager->get_manager_info) {
1372 ret = -EINVAL;
1373 break;
1374 }
1375
1376 ovl->manager->get_manager_info(ovl->manager, &info);
1377 ctrl->value = info.default_color;
1378 break;
1379 }
1380 case V4L2_CID_VFLIP:
1381 ctrl->value = vout->control[2].value;
1382 break;
1383 default:
1384 ret = -EINVAL;
1385 }
1386 return ret;
1387 }
1388
1389 static int vidioc_s_ctrl(struct file *file, void *fh, struct v4l2_control *a)
1390 {
1391 int ret = 0;
1392 struct omap_vout_device *vout = fh;
1393
1394 switch (a->id) {
1395 case V4L2_CID_ROTATE:
1396 {
1397 struct omapvideo_info *ovid;
1398 int rotation = a->value;
1399
1400 ovid = &vout->vid_info;
1401
1402 mutex_lock(&vout->lock);
1403 if (rotation && ovid->rotation_type == VOUT_ROT_NONE) {
1404 mutex_unlock(&vout->lock);
1405 ret = -ERANGE;
1406 break;
1407 }
1408
1409 if (rotation && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1410 mutex_unlock(&vout->lock);
1411 ret = -EINVAL;
1412 break;
1413 }
1414
1415 if (v4l2_rot_to_dss_rot(rotation, &vout->rotation,
1416 vout->mirror)) {
1417 mutex_unlock(&vout->lock);
1418 ret = -EINVAL;
1419 break;
1420 }
1421
1422 vout->control[0].value = rotation;
1423 mutex_unlock(&vout->lock);
1424 break;
1425 }
1426 case V4L2_CID_BG_COLOR:
1427 {
1428 struct omap_overlay *ovl;
1429 unsigned int color = a->value;
1430 struct omap_overlay_manager_info info;
1431
1432 ovl = vout->vid_info.overlays[0];
1433
1434 mutex_lock(&vout->lock);
1435 if (!ovl->manager || !ovl->manager->get_manager_info) {
1436 mutex_unlock(&vout->lock);
1437 ret = -EINVAL;
1438 break;
1439 }
1440
1441 ovl->manager->get_manager_info(ovl->manager, &info);
1442 info.default_color = color;
1443 if (ovl->manager->set_manager_info(ovl->manager, &info)) {
1444 mutex_unlock(&vout->lock);
1445 ret = -EINVAL;
1446 break;
1447 }
1448
1449 vout->control[1].value = color;
1450 mutex_unlock(&vout->lock);
1451 break;
1452 }
1453 case V4L2_CID_VFLIP:
1454 {
1455 struct omap_overlay *ovl;
1456 struct omapvideo_info *ovid;
1457 unsigned int mirror = a->value;
1458
1459 ovid = &vout->vid_info;
1460 ovl = ovid->overlays[0];
1461
1462 mutex_lock(&vout->lock);
1463 if (mirror && ovid->rotation_type == VOUT_ROT_NONE) {
1464 mutex_unlock(&vout->lock);
1465 ret = -ERANGE;
1466 break;
1467 }
1468
1469 if (mirror && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1470 mutex_unlock(&vout->lock);
1471 ret = -EINVAL;
1472 break;
1473 }
1474 vout->mirror = mirror;
1475 vout->control[2].value = mirror;
1476 mutex_unlock(&vout->lock);
1477 break;
1478 }
1479 default:
1480 ret = -EINVAL;
1481 }
1482 return ret;
1483 }
1484
1485 static int vidioc_reqbufs(struct file *file, void *fh,
1486 struct v4l2_requestbuffers *req)
1487 {
1488 int ret = 0;
1489 unsigned int i, num_buffers = 0;
1490 struct omap_vout_device *vout = fh;
1491 struct videobuf_queue *q = &vout->vbq;
1492
1493 if ((req->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) || (req->count < 0))
1494 return -EINVAL;
1495 /* if memory is not mmp or userptr
1496 return error */
1497 if ((V4L2_MEMORY_MMAP != req->memory) &&
1498 (V4L2_MEMORY_USERPTR != req->memory))
1499 return -EINVAL;
1500
1501 mutex_lock(&vout->lock);
1502 /* Cannot be requested when streaming is on */
1503 if (vout->streaming) {
1504 ret = -EBUSY;
1505 goto reqbuf_err;
1506 }
1507
1508 /* If buffers are already allocated free them */
1509 if (q->bufs[0] && (V4L2_MEMORY_MMAP == q->bufs[0]->memory)) {
1510 if (vout->mmap_count) {
1511 ret = -EBUSY;
1512 goto reqbuf_err;
1513 }
1514 num_buffers = (vout->vid == OMAP_VIDEO1) ?
1515 video1_numbuffers : video2_numbuffers;
1516 for (i = num_buffers; i < vout->buffer_allocated; i++) {
1517 omap_vout_free_buffer(vout->buf_virt_addr[i],
1518 vout->buffer_size);
1519 vout->buf_virt_addr[i] = 0;
1520 vout->buf_phy_addr[i] = 0;
1521 }
1522 vout->buffer_allocated = num_buffers;
1523 videobuf_mmap_free(q);
1524 } else if (q->bufs[0] && (V4L2_MEMORY_USERPTR == q->bufs[0]->memory)) {
1525 if (vout->buffer_allocated) {
1526 videobuf_mmap_free(q);
1527 for (i = 0; i < vout->buffer_allocated; i++) {
1528 kfree(q->bufs[i]);
1529 q->bufs[i] = NULL;
1530 }
1531 vout->buffer_allocated = 0;
1532 }
1533 }
1534
1535 /*store the memory type in data structure */
1536 vout->memory = req->memory;
1537
1538 INIT_LIST_HEAD(&vout->dma_queue);
1539
1540 /* call videobuf_reqbufs api */
1541 ret = videobuf_reqbufs(q, req);
1542 if (ret < 0)
1543 goto reqbuf_err;
1544
1545 vout->buffer_allocated = req->count;
1546
1547 reqbuf_err:
1548 mutex_unlock(&vout->lock);
1549 return ret;
1550 }
1551
1552 static int vidioc_querybuf(struct file *file, void *fh,
1553 struct v4l2_buffer *b)
1554 {
1555 struct omap_vout_device *vout = fh;
1556
1557 return videobuf_querybuf(&vout->vbq, b);
1558 }
1559
1560 static int vidioc_qbuf(struct file *file, void *fh,
1561 struct v4l2_buffer *buffer)
1562 {
1563 struct omap_vout_device *vout = fh;
1564 struct videobuf_queue *q = &vout->vbq;
1565
1566 if ((V4L2_BUF_TYPE_VIDEO_OUTPUT != buffer->type) ||
1567 (buffer->index >= vout->buffer_allocated) ||
1568 (q->bufs[buffer->index]->memory != buffer->memory)) {
1569 return -EINVAL;
1570 }
1571 if (V4L2_MEMORY_USERPTR == buffer->memory) {
1572 if ((buffer->length < vout->pix.sizeimage) ||
1573 (0 == buffer->m.userptr)) {
1574 return -EINVAL;
1575 }
1576 }
1577
1578 if ((is_rotation_enabled(vout)) &&
1579 vout->vrfb_dma_tx.req_status == DMA_CHAN_NOT_ALLOTED) {
1580 v4l2_warn(&vout->vid_dev->v4l2_dev,
1581 "DMA Channel not allocated for Rotation\n");
1582 return -EINVAL;
1583 }
1584
1585 return videobuf_qbuf(q, buffer);
1586 }
1587
1588 static int vidioc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *b)
1589 {
1590 struct omap_vout_device *vout = fh;
1591 struct videobuf_queue *q = &vout->vbq;
1592
1593 int ret;
1594 u32 addr;
1595 unsigned long size;
1596 struct videobuf_buffer *vb;
1597
1598 vb = q->bufs[b->index];
1599
1600 if (!vout->streaming)
1601 return -EINVAL;
1602
1603 if (file->f_flags & O_NONBLOCK)
1604 /* Call videobuf_dqbuf for non blocking mode */
1605 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 1);
1606 else
1607 /* Call videobuf_dqbuf for blocking mode */
1608 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 0);
1609
1610 addr = (unsigned long) vout->buf_phy_addr[vb->i];
1611 size = (unsigned long) vb->size;
1612 dma_unmap_single(vout->vid_dev->v4l2_dev.dev, addr,
1613 size, DMA_TO_DEVICE);
1614 return ret;
1615 }
1616
1617 static int vidioc_streamon(struct file *file, void *fh, enum v4l2_buf_type i)
1618 {
1619 int ret = 0, j;
1620 u32 addr = 0, mask = 0;
1621 struct omap_vout_device *vout = fh;
1622 struct videobuf_queue *q = &vout->vbq;
1623 struct omapvideo_info *ovid = &vout->vid_info;
1624
1625 mutex_lock(&vout->lock);
1626
1627 if (vout->streaming) {
1628 ret = -EBUSY;
1629 goto streamon_err;
1630 }
1631
1632 ret = videobuf_streamon(q);
1633 if (ret)
1634 goto streamon_err;
1635
1636 if (list_empty(&vout->dma_queue)) {
1637 ret = -EIO;
1638 goto streamon_err1;
1639 }
1640
1641 /* Get the next frame from the buffer queue */
1642 vout->next_frm = vout->cur_frm = list_entry(vout->dma_queue.next,
1643 struct videobuf_buffer, queue);
1644 /* Remove buffer from the buffer queue */
1645 list_del(&vout->cur_frm->queue);
1646 /* Mark state of the current frame to active */
1647 vout->cur_frm->state = VIDEOBUF_ACTIVE;
1648 /* Initialize field_id and started member */
1649 vout->field_id = 0;
1650
1651 /* set flag here. Next QBUF will start DMA */
1652 vout->streaming = 1;
1653
1654 vout->first_int = 1;
1655
1656 if (omap_vout_calculate_offset(vout)) {
1657 ret = -EINVAL;
1658 goto streamon_err1;
1659 }
1660 addr = (unsigned long) vout->queued_buf_addr[vout->cur_frm->i]
1661 + vout->cropped_offset;
1662
1663 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1664 | DISPC_IRQ_VSYNC2;
1665
1666 omap_dispc_register_isr(omap_vout_isr, vout, mask);
1667
1668 for (j = 0; j < ovid->num_overlays; j++) {
1669 struct omap_overlay *ovl = ovid->overlays[j];
1670
1671 if (ovl->manager && ovl->manager->device) {
1672 struct omap_overlay_info info;
1673 ovl->get_overlay_info(ovl, &info);
1674 info.paddr = addr;
1675 if (ovl->set_overlay_info(ovl, &info)) {
1676 ret = -EINVAL;
1677 goto streamon_err1;
1678 }
1679 }
1680 }
1681
1682 /* First save the configuration in ovelray structure */
1683 ret = omapvid_init(vout, addr);
1684 if (ret)
1685 v4l2_err(&vout->vid_dev->v4l2_dev,
1686 "failed to set overlay info\n");
1687 /* Enable the pipeline and set the Go bit */
1688 ret = omapvid_apply_changes(vout);
1689 if (ret)
1690 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1691
1692 for (j = 0; j < ovid->num_overlays; j++) {
1693 struct omap_overlay *ovl = ovid->overlays[j];
1694
1695 if (ovl->manager && ovl->manager->device) {
1696 ret = ovl->enable(ovl);
1697 if (ret)
1698 goto streamon_err1;
1699 }
1700 }
1701
1702 ret = 0;
1703
1704 streamon_err1:
1705 if (ret)
1706 ret = videobuf_streamoff(q);
1707 streamon_err:
1708 mutex_unlock(&vout->lock);
1709 return ret;
1710 }
1711
1712 static int vidioc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i)
1713 {
1714 u32 mask = 0;
1715 int ret = 0, j;
1716 struct omap_vout_device *vout = fh;
1717 struct omapvideo_info *ovid = &vout->vid_info;
1718
1719 if (!vout->streaming)
1720 return -EINVAL;
1721
1722 vout->streaming = 0;
1723 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1724 | DISPC_IRQ_VSYNC2;
1725
1726 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
1727
1728 for (j = 0; j < ovid->num_overlays; j++) {
1729 struct omap_overlay *ovl = ovid->overlays[j];
1730
1731 if (ovl->manager && ovl->manager->device)
1732 ovl->disable(ovl);
1733 }
1734
1735 /* Turn of the pipeline */
1736 ret = omapvid_apply_changes(vout);
1737 if (ret)
1738 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode in"
1739 " streamoff\n");
1740
1741 INIT_LIST_HEAD(&vout->dma_queue);
1742 ret = videobuf_streamoff(&vout->vbq);
1743
1744 return ret;
1745 }
1746
1747 static int vidioc_s_fbuf(struct file *file, void *fh,
1748 const struct v4l2_framebuffer *a)
1749 {
1750 int enable = 0;
1751 struct omap_overlay *ovl;
1752 struct omapvideo_info *ovid;
1753 struct omap_vout_device *vout = fh;
1754 struct omap_overlay_manager_info info;
1755 enum omap_dss_trans_key_type key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1756
1757 ovid = &vout->vid_info;
1758 ovl = ovid->overlays[0];
1759
1760 /* OMAP DSS doesn't support Source and Destination color
1761 key together */
1762 if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY) &&
1763 (a->flags & V4L2_FBUF_FLAG_CHROMAKEY))
1764 return -EINVAL;
1765 /* OMAP DSS Doesn't support the Destination color key
1766 and alpha blending together */
1767 if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY) &&
1768 (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA))
1769 return -EINVAL;
1770
1771 if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY)) {
1772 vout->fbuf.flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1773 key_type = OMAP_DSS_COLOR_KEY_VID_SRC;
1774 } else
1775 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1776
1777 if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY)) {
1778 vout->fbuf.flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1779 key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1780 } else
1781 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_CHROMAKEY;
1782
1783 if (a->flags & (V4L2_FBUF_FLAG_CHROMAKEY |
1784 V4L2_FBUF_FLAG_SRC_CHROMAKEY))
1785 enable = 1;
1786 else
1787 enable = 0;
1788 if (ovl->manager && ovl->manager->get_manager_info &&
1789 ovl->manager->set_manager_info) {
1790
1791 ovl->manager->get_manager_info(ovl->manager, &info);
1792 info.trans_enabled = enable;
1793 info.trans_key_type = key_type;
1794 info.trans_key = vout->win.chromakey;
1795
1796 if (ovl->manager->set_manager_info(ovl->manager, &info))
1797 return -EINVAL;
1798 }
1799 if (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA) {
1800 vout->fbuf.flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1801 enable = 1;
1802 } else {
1803 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_LOCAL_ALPHA;
1804 enable = 0;
1805 }
1806 if (ovl->manager && ovl->manager->get_manager_info &&
1807 ovl->manager->set_manager_info) {
1808 ovl->manager->get_manager_info(ovl->manager, &info);
1809 /* enable this only if there is no zorder cap */
1810 if ((ovl->caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
1811 info.partial_alpha_enabled = enable;
1812 if (ovl->manager->set_manager_info(ovl->manager, &info))
1813 return -EINVAL;
1814 }
1815
1816 return 0;
1817 }
1818
1819 static int vidioc_g_fbuf(struct file *file, void *fh,
1820 struct v4l2_framebuffer *a)
1821 {
1822 struct omap_overlay *ovl;
1823 struct omapvideo_info *ovid;
1824 struct omap_vout_device *vout = fh;
1825 struct omap_overlay_manager_info info;
1826
1827 ovid = &vout->vid_info;
1828 ovl = ovid->overlays[0];
1829
1830 /* The video overlay must stay within the framebuffer and can't be
1831 positioned independently. */
1832 a->flags = V4L2_FBUF_FLAG_OVERLAY;
1833 a->capability = V4L2_FBUF_CAP_LOCAL_ALPHA | V4L2_FBUF_CAP_CHROMAKEY
1834 | V4L2_FBUF_CAP_SRC_CHROMAKEY;
1835
1836 if (ovl->manager && ovl->manager->get_manager_info) {
1837 ovl->manager->get_manager_info(ovl->manager, &info);
1838 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_VID_SRC)
1839 a->flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1840 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_GFX_DST)
1841 a->flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1842 }
1843 if (ovl->manager && ovl->manager->get_manager_info) {
1844 ovl->manager->get_manager_info(ovl->manager, &info);
1845 if (info.partial_alpha_enabled)
1846 a->flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1847 }
1848
1849 return 0;
1850 }
1851
1852 static const struct v4l2_ioctl_ops vout_ioctl_ops = {
1853 .vidioc_querycap = vidioc_querycap,
1854 .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out,
1855 .vidioc_g_fmt_vid_out = vidioc_g_fmt_vid_out,
1856 .vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out,
1857 .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out,
1858 .vidioc_queryctrl = vidioc_queryctrl,
1859 .vidioc_g_ctrl = vidioc_g_ctrl,
1860 .vidioc_s_fbuf = vidioc_s_fbuf,
1861 .vidioc_g_fbuf = vidioc_g_fbuf,
1862 .vidioc_s_ctrl = vidioc_s_ctrl,
1863 .vidioc_try_fmt_vid_overlay = vidioc_try_fmt_vid_overlay,
1864 .vidioc_s_fmt_vid_overlay = vidioc_s_fmt_vid_overlay,
1865 .vidioc_enum_fmt_vid_overlay = vidioc_enum_fmt_vid_overlay,
1866 .vidioc_g_fmt_vid_overlay = vidioc_g_fmt_vid_overlay,
1867 .vidioc_cropcap = vidioc_cropcap,
1868 .vidioc_g_crop = vidioc_g_crop,
1869 .vidioc_s_crop = vidioc_s_crop,
1870 .vidioc_reqbufs = vidioc_reqbufs,
1871 .vidioc_querybuf = vidioc_querybuf,
1872 .vidioc_qbuf = vidioc_qbuf,
1873 .vidioc_dqbuf = vidioc_dqbuf,
1874 .vidioc_streamon = vidioc_streamon,
1875 .vidioc_streamoff = vidioc_streamoff,
1876 };
1877
1878 static const struct v4l2_file_operations omap_vout_fops = {
1879 .owner = THIS_MODULE,
1880 .poll = omap_vout_poll,
1881 .unlocked_ioctl = video_ioctl2,
1882 .mmap = omap_vout_mmap,
1883 .open = omap_vout_open,
1884 .release = omap_vout_release,
1885 };
1886
1887 /* Init functions used during driver initialization */
1888 /* Initial setup of video_data */
1889 static int __init omap_vout_setup_video_data(struct omap_vout_device *vout)
1890 {
1891 struct video_device *vfd;
1892 struct v4l2_pix_format *pix;
1893 struct v4l2_control *control;
1894 struct omap_dss_device *display =
1895 vout->vid_info.overlays[0]->manager->device;
1896
1897 /* set the default pix */
1898 pix = &vout->pix;
1899
1900 /* Set the default picture of QVGA */
1901 pix->width = QQVGA_WIDTH;
1902 pix->height = QQVGA_HEIGHT;
1903
1904 /* Default pixel format is RGB 5-6-5 */
1905 pix->pixelformat = V4L2_PIX_FMT_RGB565;
1906 pix->field = V4L2_FIELD_ANY;
1907 pix->bytesperline = pix->width * 2;
1908 pix->sizeimage = pix->bytesperline * pix->height;
1909 pix->priv = 0;
1910 pix->colorspace = V4L2_COLORSPACE_JPEG;
1911
1912 vout->bpp = RGB565_BPP;
1913 vout->fbuf.fmt.width = display->panel.timings.x_res;
1914 vout->fbuf.fmt.height = display->panel.timings.y_res;
1915
1916 /* Set the data structures for the overlay parameters*/
1917 vout->win.global_alpha = 255;
1918 vout->fbuf.flags = 0;
1919 vout->fbuf.capability = V4L2_FBUF_CAP_LOCAL_ALPHA |
1920 V4L2_FBUF_CAP_SRC_CHROMAKEY | V4L2_FBUF_CAP_CHROMAKEY;
1921 vout->win.chromakey = 0;
1922
1923 omap_vout_new_format(pix, &vout->fbuf, &vout->crop, &vout->win);
1924
1925 /*Initialize the control variables for
1926 rotation, flipping and background color. */
1927 control = vout->control;
1928 control[0].id = V4L2_CID_ROTATE;
1929 control[0].value = 0;
1930 vout->rotation = 0;
1931 vout->mirror = 0;
1932 vout->control[2].id = V4L2_CID_HFLIP;
1933 vout->control[2].value = 0;
1934 if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
1935 vout->vrfb_bpp = 2;
1936
1937 control[1].id = V4L2_CID_BG_COLOR;
1938 control[1].value = 0;
1939
1940 /* initialize the video_device struct */
1941 vfd = vout->vfd = video_device_alloc();
1942
1943 if (!vfd) {
1944 printk(KERN_ERR VOUT_NAME ": could not allocate"
1945 " video device struct\n");
1946 return -ENOMEM;
1947 }
1948 vfd->release = video_device_release;
1949 vfd->ioctl_ops = &vout_ioctl_ops;
1950
1951 strlcpy(vfd->name, VOUT_NAME, sizeof(vfd->name));
1952
1953 vfd->fops = &omap_vout_fops;
1954 vfd->v4l2_dev = &vout->vid_dev->v4l2_dev;
1955 vfd->vfl_dir = VFL_DIR_TX;
1956 mutex_init(&vout->lock);
1957
1958 vfd->minor = -1;
1959 return 0;
1960
1961 }
1962
1963 /* Setup video buffers */
1964 static int __init omap_vout_setup_video_bufs(struct platform_device *pdev,
1965 int vid_num)
1966 {
1967 u32 numbuffers;
1968 int ret = 0, i;
1969 struct omapvideo_info *ovid;
1970 struct omap_vout_device *vout;
1971 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1972 struct omap2video_device *vid_dev =
1973 container_of(v4l2_dev, struct omap2video_device, v4l2_dev);
1974
1975 vout = vid_dev->vouts[vid_num];
1976 ovid = &vout->vid_info;
1977
1978 numbuffers = (vid_num == 0) ? video1_numbuffers : video2_numbuffers;
1979 vout->buffer_size = (vid_num == 0) ? video1_bufsize : video2_bufsize;
1980 dev_info(&pdev->dev, "Buffer Size = %d\n", vout->buffer_size);
1981
1982 for (i = 0; i < numbuffers; i++) {
1983 vout->buf_virt_addr[i] =
1984 omap_vout_alloc_buffer(vout->buffer_size,
1985 (u32 *) &vout->buf_phy_addr[i]);
1986 if (!vout->buf_virt_addr[i]) {
1987 numbuffers = i;
1988 ret = -ENOMEM;
1989 goto free_buffers;
1990 }
1991 }
1992
1993 vout->cropped_offset = 0;
1994
1995 if (ovid->rotation_type == VOUT_ROT_VRFB) {
1996 int static_vrfb_allocation = (vid_num == 0) ?
1997 vid1_static_vrfb_alloc : vid2_static_vrfb_alloc;
1998 ret = omap_vout_setup_vrfb_bufs(pdev, vid_num,
1999 static_vrfb_allocation);
2000 }
2001
2002 return ret;
2003
2004 free_buffers:
2005 for (i = 0; i < numbuffers; i++) {
2006 omap_vout_free_buffer(vout->buf_virt_addr[i],
2007 vout->buffer_size);
2008 vout->buf_virt_addr[i] = 0;
2009 vout->buf_phy_addr[i] = 0;
2010 }
2011 return ret;
2012
2013 }
2014
2015 /* Create video out devices */
2016 static int __init omap_vout_create_video_devices(struct platform_device *pdev)
2017 {
2018 int ret = 0, k;
2019 struct omap_vout_device *vout;
2020 struct video_device *vfd = NULL;
2021 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2022 struct omap2video_device *vid_dev = container_of(v4l2_dev,
2023 struct omap2video_device, v4l2_dev);
2024
2025 for (k = 0; k < pdev->num_resources; k++) {
2026
2027 vout = kzalloc(sizeof(struct omap_vout_device), GFP_KERNEL);
2028 if (!vout) {
2029 dev_err(&pdev->dev, ": could not allocate memory\n");
2030 return -ENOMEM;
2031 }
2032
2033 vout->vid = k;
2034 vid_dev->vouts[k] = vout;
2035 vout->vid_dev = vid_dev;
2036 /* Select video2 if only 1 overlay is controlled by V4L2 */
2037 if (pdev->num_resources == 1)
2038 vout->vid_info.overlays[0] = vid_dev->overlays[k + 2];
2039 else
2040 /* Else select video1 and video2 one by one. */
2041 vout->vid_info.overlays[0] = vid_dev->overlays[k + 1];
2042 vout->vid_info.num_overlays = 1;
2043 vout->vid_info.id = k + 1;
2044
2045 /* Set VRFB as rotation_type for omap2 and omap3 */
2046 if (cpu_is_omap24xx() || cpu_is_omap34xx())
2047 vout->vid_info.rotation_type = VOUT_ROT_VRFB;
2048
2049 /* Setup the default configuration for the video devices
2050 */
2051 if (omap_vout_setup_video_data(vout) != 0) {
2052 ret = -ENOMEM;
2053 goto error;
2054 }
2055
2056 /* Allocate default number of buffers for the video streaming
2057 * and reserve the VRFB space for rotation
2058 */
2059 if (omap_vout_setup_video_bufs(pdev, k) != 0) {
2060 ret = -ENOMEM;
2061 goto error1;
2062 }
2063
2064 /* Register the Video device with V4L2
2065 */
2066 vfd = vout->vfd;
2067 if (video_register_device(vfd, VFL_TYPE_GRABBER, -1) < 0) {
2068 dev_err(&pdev->dev, ": Could not register "
2069 "Video for Linux device\n");
2070 vfd->minor = -1;
2071 ret = -ENODEV;
2072 goto error2;
2073 }
2074 video_set_drvdata(vfd, vout);
2075
2076 /* Configure the overlay structure */
2077 ret = omapvid_init(vid_dev->vouts[k], 0);
2078 if (!ret)
2079 goto success;
2080
2081 error2:
2082 if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
2083 omap_vout_release_vrfb(vout);
2084 omap_vout_free_buffers(vout);
2085 error1:
2086 video_device_release(vfd);
2087 error:
2088 kfree(vout);
2089 return ret;
2090
2091 success:
2092 dev_info(&pdev->dev, ": registered and initialized"
2093 " video device %d\n", vfd->minor);
2094 if (k == (pdev->num_resources - 1))
2095 return 0;
2096 }
2097
2098 return -ENODEV;
2099 }
2100 /* Driver functions */
2101 static void omap_vout_cleanup_device(struct omap_vout_device *vout)
2102 {
2103 struct video_device *vfd;
2104 struct omapvideo_info *ovid;
2105
2106 if (!vout)
2107 return;
2108
2109 vfd = vout->vfd;
2110 ovid = &vout->vid_info;
2111 if (vfd) {
2112 if (!video_is_registered(vfd)) {
2113 /*
2114 * The device was never registered, so release the
2115 * video_device struct directly.
2116 */
2117 video_device_release(vfd);
2118 } else {
2119 /*
2120 * The unregister function will release the video_device
2121 * struct as well as unregistering it.
2122 */
2123 video_unregister_device(vfd);
2124 }
2125 }
2126 if (ovid->rotation_type == VOUT_ROT_VRFB) {
2127 omap_vout_release_vrfb(vout);
2128 /* Free the VRFB buffer if allocated
2129 * init time
2130 */
2131 if (vout->vrfb_static_allocation)
2132 omap_vout_free_vrfb_buffers(vout);
2133 }
2134 omap_vout_free_buffers(vout);
2135
2136 kfree(vout);
2137 }
2138
2139 static int omap_vout_remove(struct platform_device *pdev)
2140 {
2141 int k;
2142 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2143 struct omap2video_device *vid_dev = container_of(v4l2_dev, struct
2144 omap2video_device, v4l2_dev);
2145
2146 v4l2_device_unregister(v4l2_dev);
2147 for (k = 0; k < pdev->num_resources; k++)
2148 omap_vout_cleanup_device(vid_dev->vouts[k]);
2149
2150 for (k = 0; k < vid_dev->num_displays; k++) {
2151 if (vid_dev->displays[k]->state != OMAP_DSS_DISPLAY_DISABLED)
2152 vid_dev->displays[k]->driver->disable(vid_dev->displays[k]);
2153
2154 omap_dss_put_device(vid_dev->displays[k]);
2155 }
2156 kfree(vid_dev);
2157 return 0;
2158 }
2159
2160 static int __init omap_vout_probe(struct platform_device *pdev)
2161 {
2162 int ret = 0, i;
2163 struct omap_overlay *ovl;
2164 struct omap_dss_device *dssdev = NULL;
2165 struct omap_dss_device *def_display;
2166 struct omap2video_device *vid_dev = NULL;
2167
2168 if (pdev->num_resources == 0) {
2169 dev_err(&pdev->dev, "probed for an unknown device\n");
2170 return -ENODEV;
2171 }
2172
2173 vid_dev = kzalloc(sizeof(struct omap2video_device), GFP_KERNEL);
2174 if (vid_dev == NULL)
2175 return -ENOMEM;
2176
2177 vid_dev->num_displays = 0;
2178 for_each_dss_dev(dssdev) {
2179 omap_dss_get_device(dssdev);
2180
2181 if (!dssdev->driver) {
2182 dev_warn(&pdev->dev, "no driver for display: %s\n",
2183 dssdev->name);
2184 omap_dss_put_device(dssdev);
2185 continue;
2186 }
2187
2188 vid_dev->displays[vid_dev->num_displays++] = dssdev;
2189 }
2190
2191 if (vid_dev->num_displays == 0) {
2192 dev_err(&pdev->dev, "no displays\n");
2193 ret = -EINVAL;
2194 goto probe_err0;
2195 }
2196
2197 vid_dev->num_overlays = omap_dss_get_num_overlays();
2198 for (i = 0; i < vid_dev->num_overlays; i++)
2199 vid_dev->overlays[i] = omap_dss_get_overlay(i);
2200
2201 vid_dev->num_managers = omap_dss_get_num_overlay_managers();
2202 for (i = 0; i < vid_dev->num_managers; i++)
2203 vid_dev->managers[i] = omap_dss_get_overlay_manager(i);
2204
2205 /* Get the Video1 overlay and video2 overlay.
2206 * Setup the Display attached to that overlays
2207 */
2208 for (i = 1; i < vid_dev->num_overlays; i++) {
2209 ovl = omap_dss_get_overlay(i);
2210 if (ovl->manager && ovl->manager->device) {
2211 def_display = ovl->manager->device;
2212 } else {
2213 dev_warn(&pdev->dev, "cannot find display\n");
2214 def_display = NULL;
2215 }
2216 if (def_display) {
2217 struct omap_dss_driver *dssdrv = def_display->driver;
2218
2219 ret = dssdrv->enable(def_display);
2220 if (ret) {
2221 /* Here we are not considering a error
2222 * as display may be enabled by frame
2223 * buffer driver
2224 */
2225 dev_warn(&pdev->dev,
2226 "'%s' Display already enabled\n",
2227 def_display->name);
2228 }
2229 }
2230 }
2231
2232 if (v4l2_device_register(&pdev->dev, &vid_dev->v4l2_dev) < 0) {
2233 dev_err(&pdev->dev, "v4l2_device_register failed\n");
2234 ret = -ENODEV;
2235 goto probe_err1;
2236 }
2237
2238 ret = omap_vout_create_video_devices(pdev);
2239 if (ret)
2240 goto probe_err2;
2241
2242 for (i = 0; i < vid_dev->num_displays; i++) {
2243 struct omap_dss_device *display = vid_dev->displays[i];
2244
2245 if (display->driver->update)
2246 display->driver->update(display, 0, 0,
2247 display->panel.timings.x_res,
2248 display->panel.timings.y_res);
2249 }
2250 return 0;
2251
2252 probe_err2:
2253 v4l2_device_unregister(&vid_dev->v4l2_dev);
2254 probe_err1:
2255 for (i = 1; i < vid_dev->num_overlays; i++) {
2256 def_display = NULL;
2257 ovl = omap_dss_get_overlay(i);
2258 if (ovl->manager && ovl->manager->device)
2259 def_display = ovl->manager->device;
2260
2261 if (def_display && def_display->driver)
2262 def_display->driver->disable(def_display);
2263 }
2264 probe_err0:
2265 kfree(vid_dev);
2266 return ret;
2267 }
2268
2269 static struct platform_driver omap_vout_driver = {
2270 .driver = {
2271 .name = VOUT_NAME,
2272 },
2273 .remove = omap_vout_remove,
2274 };
2275
2276 static int __init omap_vout_init(void)
2277 {
2278 if (platform_driver_probe(&omap_vout_driver, omap_vout_probe) != 0) {
2279 printk(KERN_ERR VOUT_NAME ":Could not register Video driver\n");
2280 return -EINVAL;
2281 }
2282 return 0;
2283 }
2284
2285 static void omap_vout_cleanup(void)
2286 {
2287 platform_driver_unregister(&omap_vout_driver);
2288 }
2289
2290 late_initcall(omap_vout_init);
2291 module_exit(omap_vout_cleanup);
Linux kernel - Deliverables
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