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Merge tag 'fbdev-updates-for-3.7' of git://github.com/schandinat/linux-2.6
[mirror_ubuntu-artful-kernel.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 struct omap_dss_device *dssdev;
459
460 ovl = ovid->overlays[i];
461 dssdev = ovl->get_device(ovl);
462
463 if (!dssdev)
464 return -EINVAL;
465
466 timing = &dssdev->panel.timings;
467
468 outw = win->w.width;
469 outh = win->w.height;
470 switch (vout->rotation) {
471 case dss_rotation_90_degree:
472 /* Invert the height and width for 90
473 * and 270 degree rotation
474 */
475 temp = outw;
476 outw = outh;
477 outh = temp;
478 posy = (timing->y_res - win->w.width) - win->w.left;
479 posx = win->w.top;
480 break;
481
482 case dss_rotation_180_degree:
483 posx = (timing->x_res - win->w.width) - win->w.left;
484 posy = (timing->y_res - win->w.height) - win->w.top;
485 break;
486
487 case dss_rotation_270_degree:
488 temp = outw;
489 outw = outh;
490 outh = temp;
491 posy = win->w.left;
492 posx = (timing->x_res - win->w.height) - win->w.top;
493 break;
494
495 default:
496 posx = win->w.left;
497 posy = win->w.top;
498 break;
499 }
500
501 ret = omapvid_setup_overlay(vout, ovl, posx, posy,
502 outw, outh, addr);
503 if (ret)
504 goto omapvid_init_err;
505 }
506 return 0;
507
508 omapvid_init_err:
509 v4l2_warn(&vout->vid_dev->v4l2_dev, "apply_changes failed\n");
510 return ret;
511 }
512
513 /*
514 * Apply the changes set the go bit of DSS
515 */
516 static int omapvid_apply_changes(struct omap_vout_device *vout)
517 {
518 int i;
519 struct omap_overlay *ovl;
520 struct omapvideo_info *ovid = &vout->vid_info;
521
522 for (i = 0; i < ovid->num_overlays; i++) {
523 struct omap_dss_device *dssdev;
524
525 ovl = ovid->overlays[i];
526 dssdev = ovl->get_device(ovl);
527 if (!dssdev)
528 return -EINVAL;
529 ovl->manager->apply(ovl->manager);
530 }
531
532 return 0;
533 }
534
535 static int omapvid_handle_interlace_display(struct omap_vout_device *vout,
536 unsigned int irqstatus, struct timeval timevalue)
537 {
538 u32 fid;
539
540 if (vout->first_int) {
541 vout->first_int = 0;
542 goto err;
543 }
544
545 if (irqstatus & DISPC_IRQ_EVSYNC_ODD)
546 fid = 1;
547 else if (irqstatus & DISPC_IRQ_EVSYNC_EVEN)
548 fid = 0;
549 else
550 goto err;
551
552 vout->field_id ^= 1;
553 if (fid != vout->field_id) {
554 if (fid == 0)
555 vout->field_id = fid;
556 } else if (0 == fid) {
557 if (vout->cur_frm == vout->next_frm)
558 goto err;
559
560 vout->cur_frm->ts = timevalue;
561 vout->cur_frm->state = VIDEOBUF_DONE;
562 wake_up_interruptible(&vout->cur_frm->done);
563 vout->cur_frm = vout->next_frm;
564 } else {
565 if (list_empty(&vout->dma_queue) ||
566 (vout->cur_frm != vout->next_frm))
567 goto err;
568 }
569
570 return vout->field_id;
571 err:
572 return 0;
573 }
574
575 static void omap_vout_isr(void *arg, unsigned int irqstatus)
576 {
577 int ret, fid, mgr_id;
578 u32 addr, irq;
579 struct omap_overlay *ovl;
580 struct timeval timevalue;
581 struct omapvideo_info *ovid;
582 struct omap_dss_device *cur_display;
583 struct omap_vout_device *vout = (struct omap_vout_device *)arg;
584
585 if (!vout->streaming)
586 return;
587
588 ovid = &vout->vid_info;
589 ovl = ovid->overlays[0];
590
591 mgr_id = ovl->manager->id;
592
593 /* get the display device attached to the overlay */
594 cur_display = ovl->get_device(ovl);
595
596 if (!cur_display)
597 return;
598
599 spin_lock(&vout->vbq_lock);
600 do_gettimeofday(&timevalue);
601
602 switch (cur_display->type) {
603 case OMAP_DISPLAY_TYPE_DSI:
604 case OMAP_DISPLAY_TYPE_DPI:
605 if (mgr_id == OMAP_DSS_CHANNEL_LCD)
606 irq = DISPC_IRQ_VSYNC;
607 else if (mgr_id == OMAP_DSS_CHANNEL_LCD2)
608 irq = DISPC_IRQ_VSYNC2;
609 else
610 goto vout_isr_err;
611
612 if (!(irqstatus & irq))
613 goto vout_isr_err;
614 break;
615 case OMAP_DISPLAY_TYPE_VENC:
616 fid = omapvid_handle_interlace_display(vout, irqstatus,
617 timevalue);
618 if (!fid)
619 goto vout_isr_err;
620 break;
621 case OMAP_DISPLAY_TYPE_HDMI:
622 if (!(irqstatus & DISPC_IRQ_EVSYNC_EVEN))
623 goto vout_isr_err;
624 break;
625 default:
626 goto vout_isr_err;
627 }
628
629 if (!vout->first_int && (vout->cur_frm != vout->next_frm)) {
630 vout->cur_frm->ts = timevalue;
631 vout->cur_frm->state = VIDEOBUF_DONE;
632 wake_up_interruptible(&vout->cur_frm->done);
633 vout->cur_frm = vout->next_frm;
634 }
635
636 vout->first_int = 0;
637 if (list_empty(&vout->dma_queue))
638 goto vout_isr_err;
639
640 vout->next_frm = list_entry(vout->dma_queue.next,
641 struct videobuf_buffer, queue);
642 list_del(&vout->next_frm->queue);
643
644 vout->next_frm->state = VIDEOBUF_ACTIVE;
645
646 addr = (unsigned long) vout->queued_buf_addr[vout->next_frm->i]
647 + vout->cropped_offset;
648
649 /* First save the configuration in ovelray structure */
650 ret = omapvid_init(vout, addr);
651 if (ret)
652 printk(KERN_ERR VOUT_NAME
653 "failed to set overlay info\n");
654 /* Enable the pipeline and set the Go bit */
655 ret = omapvid_apply_changes(vout);
656 if (ret)
657 printk(KERN_ERR VOUT_NAME "failed to change mode\n");
658
659 vout_isr_err:
660 spin_unlock(&vout->vbq_lock);
661 }
662
663 /* Video buffer call backs */
664
665 /*
666 * Buffer setup function is called by videobuf layer when REQBUF ioctl is
667 * called. This is used to setup buffers and return size and count of
668 * buffers allocated. After the call to this buffer, videobuf layer will
669 * setup buffer queue depending on the size and count of buffers
670 */
671 static int omap_vout_buffer_setup(struct videobuf_queue *q, unsigned int *count,
672 unsigned int *size)
673 {
674 int startindex = 0, i, j;
675 u32 phy_addr = 0, virt_addr = 0;
676 struct omap_vout_device *vout = q->priv_data;
677 struct omapvideo_info *ovid = &vout->vid_info;
678 int vid_max_buf_size;
679
680 if (!vout)
681 return -EINVAL;
682
683 vid_max_buf_size = vout->vid == OMAP_VIDEO1 ? video1_bufsize :
684 video2_bufsize;
685
686 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != q->type)
687 return -EINVAL;
688
689 startindex = (vout->vid == OMAP_VIDEO1) ?
690 video1_numbuffers : video2_numbuffers;
691 if (V4L2_MEMORY_MMAP == vout->memory && *count < startindex)
692 *count = startindex;
693
694 if (ovid->rotation_type == VOUT_ROT_VRFB) {
695 if (omap_vout_vrfb_buffer_setup(vout, count, startindex))
696 return -ENOMEM;
697 }
698
699 if (V4L2_MEMORY_MMAP != vout->memory)
700 return 0;
701
702 /* Now allocated the V4L2 buffers */
703 *size = PAGE_ALIGN(vout->pix.width * vout->pix.height * vout->bpp);
704 startindex = (vout->vid == OMAP_VIDEO1) ?
705 video1_numbuffers : video2_numbuffers;
706
707 /* Check the size of the buffer */
708 if (*size > vid_max_buf_size) {
709 v4l2_err(&vout->vid_dev->v4l2_dev,
710 "buffer allocation mismatch [%u] [%u]\n",
711 *size, vout->buffer_size);
712 return -ENOMEM;
713 }
714
715 for (i = startindex; i < *count; i++) {
716 vout->buffer_size = *size;
717
718 virt_addr = omap_vout_alloc_buffer(vout->buffer_size,
719 &phy_addr);
720 if (!virt_addr) {
721 if (ovid->rotation_type == VOUT_ROT_NONE) {
722 break;
723 } else {
724 if (!is_rotation_enabled(vout))
725 break;
726 /* Free the VRFB buffers if no space for V4L2 buffers */
727 for (j = i; j < *count; j++) {
728 omap_vout_free_buffer(
729 vout->smsshado_virt_addr[j],
730 vout->smsshado_size);
731 vout->smsshado_virt_addr[j] = 0;
732 vout->smsshado_phy_addr[j] = 0;
733 }
734 }
735 }
736 vout->buf_virt_addr[i] = virt_addr;
737 vout->buf_phy_addr[i] = phy_addr;
738 }
739 *count = vout->buffer_allocated = i;
740
741 return 0;
742 }
743
744 /*
745 * Free the V4L2 buffers additionally allocated than default
746 * number of buffers
747 */
748 static void omap_vout_free_extra_buffers(struct omap_vout_device *vout)
749 {
750 int num_buffers = 0, i;
751
752 num_buffers = (vout->vid == OMAP_VIDEO1) ?
753 video1_numbuffers : video2_numbuffers;
754
755 for (i = num_buffers; i < vout->buffer_allocated; i++) {
756 if (vout->buf_virt_addr[i])
757 omap_vout_free_buffer(vout->buf_virt_addr[i],
758 vout->buffer_size);
759
760 vout->buf_virt_addr[i] = 0;
761 vout->buf_phy_addr[i] = 0;
762 }
763 vout->buffer_allocated = num_buffers;
764 }
765
766 /*
767 * This function will be called when VIDIOC_QBUF ioctl is called.
768 * It prepare buffers before give out for the display. This function
769 * converts user space virtual address into physical address if userptr memory
770 * exchange mechanism is used. If rotation is enabled, it copies entire
771 * buffer into VRFB memory space before giving it to the DSS.
772 */
773 static int omap_vout_buffer_prepare(struct videobuf_queue *q,
774 struct videobuf_buffer *vb,
775 enum v4l2_field field)
776 {
777 struct omap_vout_device *vout = q->priv_data;
778 struct omapvideo_info *ovid = &vout->vid_info;
779
780 if (VIDEOBUF_NEEDS_INIT == vb->state) {
781 vb->width = vout->pix.width;
782 vb->height = vout->pix.height;
783 vb->size = vb->width * vb->height * vout->bpp;
784 vb->field = field;
785 }
786 vb->state = VIDEOBUF_PREPARED;
787 /* if user pointer memory mechanism is used, get the physical
788 * address of the buffer
789 */
790 if (V4L2_MEMORY_USERPTR == vb->memory) {
791 if (0 == vb->baddr)
792 return -EINVAL;
793 /* Physical address */
794 vout->queued_buf_addr[vb->i] = (u8 *)
795 omap_vout_uservirt_to_phys(vb->baddr);
796 } else {
797 u32 addr, dma_addr;
798 unsigned long size;
799
800 addr = (unsigned long) vout->buf_virt_addr[vb->i];
801 size = (unsigned long) vb->size;
802
803 dma_addr = dma_map_single(vout->vid_dev->v4l2_dev.dev, (void *) addr,
804 size, DMA_TO_DEVICE);
805 if (dma_mapping_error(vout->vid_dev->v4l2_dev.dev, dma_addr))
806 v4l2_err(&vout->vid_dev->v4l2_dev, "dma_map_single failed\n");
807
808 vout->queued_buf_addr[vb->i] = (u8 *)vout->buf_phy_addr[vb->i];
809 }
810
811 if (ovid->rotation_type == VOUT_ROT_VRFB)
812 return omap_vout_prepare_vrfb(vout, vb);
813 else
814 return 0;
815 }
816
817 /*
818 * Buffer queue function will be called from the videobuf layer when _QBUF
819 * ioctl is called. It is used to enqueue buffer, which is ready to be
820 * displayed.
821 */
822 static void omap_vout_buffer_queue(struct videobuf_queue *q,
823 struct videobuf_buffer *vb)
824 {
825 struct omap_vout_device *vout = q->priv_data;
826
827 /* Driver is also maintainig a queue. So enqueue buffer in the driver
828 * queue */
829 list_add_tail(&vb->queue, &vout->dma_queue);
830
831 vb->state = VIDEOBUF_QUEUED;
832 }
833
834 /*
835 * Buffer release function is called from videobuf layer to release buffer
836 * which are already allocated
837 */
838 static void omap_vout_buffer_release(struct videobuf_queue *q,
839 struct videobuf_buffer *vb)
840 {
841 struct omap_vout_device *vout = q->priv_data;
842
843 vb->state = VIDEOBUF_NEEDS_INIT;
844
845 if (V4L2_MEMORY_MMAP != vout->memory)
846 return;
847 }
848
849 /*
850 * File operations
851 */
852 static unsigned int omap_vout_poll(struct file *file,
853 struct poll_table_struct *wait)
854 {
855 struct omap_vout_device *vout = file->private_data;
856 struct videobuf_queue *q = &vout->vbq;
857
858 return videobuf_poll_stream(file, q, wait);
859 }
860
861 static void omap_vout_vm_open(struct vm_area_struct *vma)
862 {
863 struct omap_vout_device *vout = vma->vm_private_data;
864
865 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
866 "vm_open [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
867 vout->mmap_count++;
868 }
869
870 static void omap_vout_vm_close(struct vm_area_struct *vma)
871 {
872 struct omap_vout_device *vout = vma->vm_private_data;
873
874 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
875 "vm_close [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
876 vout->mmap_count--;
877 }
878
879 static struct vm_operations_struct omap_vout_vm_ops = {
880 .open = omap_vout_vm_open,
881 .close = omap_vout_vm_close,
882 };
883
884 static int omap_vout_mmap(struct file *file, struct vm_area_struct *vma)
885 {
886 int i;
887 void *pos;
888 unsigned long start = vma->vm_start;
889 unsigned long size = (vma->vm_end - vma->vm_start);
890 struct omap_vout_device *vout = file->private_data;
891 struct videobuf_queue *q = &vout->vbq;
892
893 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
894 " %s pgoff=0x%lx, start=0x%lx, end=0x%lx\n", __func__,
895 vma->vm_pgoff, vma->vm_start, vma->vm_end);
896
897 /* look for the buffer to map */
898 for (i = 0; i < VIDEO_MAX_FRAME; i++) {
899 if (NULL == q->bufs[i])
900 continue;
901 if (V4L2_MEMORY_MMAP != q->bufs[i]->memory)
902 continue;
903 if (q->bufs[i]->boff == (vma->vm_pgoff << PAGE_SHIFT))
904 break;
905 }
906
907 if (VIDEO_MAX_FRAME == i) {
908 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
909 "offset invalid [offset=0x%lx]\n",
910 (vma->vm_pgoff << PAGE_SHIFT));
911 return -EINVAL;
912 }
913 /* Check the size of the buffer */
914 if (size > vout->buffer_size) {
915 v4l2_err(&vout->vid_dev->v4l2_dev,
916 "insufficient memory [%lu] [%u]\n",
917 size, vout->buffer_size);
918 return -ENOMEM;
919 }
920
921 q->bufs[i]->baddr = vma->vm_start;
922
923 vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
924 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
925 vma->vm_ops = &omap_vout_vm_ops;
926 vma->vm_private_data = (void *) vout;
927 pos = (void *)vout->buf_virt_addr[i];
928 vma->vm_pgoff = virt_to_phys((void *)pos) >> PAGE_SHIFT;
929 while (size > 0) {
930 unsigned long pfn;
931 pfn = virt_to_phys((void *) pos) >> PAGE_SHIFT;
932 if (remap_pfn_range(vma, start, pfn, PAGE_SIZE, PAGE_SHARED))
933 return -EAGAIN;
934 start += PAGE_SIZE;
935 pos += PAGE_SIZE;
936 size -= PAGE_SIZE;
937 }
938 vout->mmap_count++;
939 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
940
941 return 0;
942 }
943
944 static int omap_vout_release(struct file *file)
945 {
946 unsigned int ret, i;
947 struct videobuf_queue *q;
948 struct omapvideo_info *ovid;
949 struct omap_vout_device *vout = file->private_data;
950
951 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
952 ovid = &vout->vid_info;
953
954 if (!vout)
955 return 0;
956
957 q = &vout->vbq;
958 /* Disable all the overlay managers connected with this interface */
959 for (i = 0; i < ovid->num_overlays; i++) {
960 struct omap_overlay *ovl = ovid->overlays[i];
961 struct omap_dss_device *dssdev = ovl->get_device(ovl);
962
963 if (dssdev)
964 ovl->disable(ovl);
965 }
966 /* Turn off the pipeline */
967 ret = omapvid_apply_changes(vout);
968 if (ret)
969 v4l2_warn(&vout->vid_dev->v4l2_dev,
970 "Unable to apply changes\n");
971
972 /* Free all buffers */
973 omap_vout_free_extra_buffers(vout);
974
975 /* Free the VRFB buffers only if they are allocated
976 * during reqbufs. Don't free if init time allocated
977 */
978 if (ovid->rotation_type == VOUT_ROT_VRFB) {
979 if (!vout->vrfb_static_allocation)
980 omap_vout_free_vrfb_buffers(vout);
981 }
982 videobuf_mmap_free(q);
983
984 /* Even if apply changes fails we should continue
985 freeing allocated memory */
986 if (vout->streaming) {
987 u32 mask = 0;
988
989 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN |
990 DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_VSYNC2;
991 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
992 vout->streaming = 0;
993
994 videobuf_streamoff(q);
995 videobuf_queue_cancel(q);
996 }
997
998 if (vout->mmap_count != 0)
999 vout->mmap_count = 0;
1000
1001 vout->opened -= 1;
1002 file->private_data = NULL;
1003
1004 if (vout->buffer_allocated)
1005 videobuf_mmap_free(q);
1006
1007 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1008 return ret;
1009 }
1010
1011 static int omap_vout_open(struct file *file)
1012 {
1013 struct videobuf_queue *q;
1014 struct omap_vout_device *vout = NULL;
1015
1016 vout = video_drvdata(file);
1017 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
1018
1019 if (vout == NULL)
1020 return -ENODEV;
1021
1022 /* for now, we only support single open */
1023 if (vout->opened)
1024 return -EBUSY;
1025
1026 vout->opened += 1;
1027
1028 file->private_data = vout;
1029 vout->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1030
1031 q = &vout->vbq;
1032 video_vbq_ops.buf_setup = omap_vout_buffer_setup;
1033 video_vbq_ops.buf_prepare = omap_vout_buffer_prepare;
1034 video_vbq_ops.buf_release = omap_vout_buffer_release;
1035 video_vbq_ops.buf_queue = omap_vout_buffer_queue;
1036 spin_lock_init(&vout->vbq_lock);
1037
1038 videobuf_queue_dma_contig_init(q, &video_vbq_ops, q->dev,
1039 &vout->vbq_lock, vout->type, V4L2_FIELD_NONE,
1040 sizeof(struct videobuf_buffer), vout, NULL);
1041
1042 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1043 return 0;
1044 }
1045
1046 /*
1047 * V4L2 ioctls
1048 */
1049 static int vidioc_querycap(struct file *file, void *fh,
1050 struct v4l2_capability *cap)
1051 {
1052 struct omap_vout_device *vout = fh;
1053
1054 strlcpy(cap->driver, VOUT_NAME, sizeof(cap->driver));
1055 strlcpy(cap->card, vout->vfd->name, sizeof(cap->card));
1056 cap->bus_info[0] = '\0';
1057 cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_OUTPUT |
1058 V4L2_CAP_VIDEO_OUTPUT_OVERLAY;
1059
1060 return 0;
1061 }
1062
1063 static int vidioc_enum_fmt_vid_out(struct file *file, void *fh,
1064 struct v4l2_fmtdesc *fmt)
1065 {
1066 int index = fmt->index;
1067
1068 if (index >= NUM_OUTPUT_FORMATS)
1069 return -EINVAL;
1070
1071 fmt->flags = omap_formats[index].flags;
1072 strlcpy(fmt->description, omap_formats[index].description,
1073 sizeof(fmt->description));
1074 fmt->pixelformat = omap_formats[index].pixelformat;
1075
1076 return 0;
1077 }
1078
1079 static int vidioc_g_fmt_vid_out(struct file *file, void *fh,
1080 struct v4l2_format *f)
1081 {
1082 struct omap_vout_device *vout = fh;
1083
1084 f->fmt.pix = vout->pix;
1085 return 0;
1086
1087 }
1088
1089 static int vidioc_try_fmt_vid_out(struct file *file, void *fh,
1090 struct v4l2_format *f)
1091 {
1092 struct omap_overlay *ovl;
1093 struct omapvideo_info *ovid;
1094 struct omap_video_timings *timing;
1095 struct omap_vout_device *vout = fh;
1096 struct omap_dss_device *dssdev;
1097
1098 ovid = &vout->vid_info;
1099 ovl = ovid->overlays[0];
1100 /* get the display device attached to the overlay */
1101 dssdev = ovl->get_device(ovl);
1102
1103 if (!dssdev)
1104 return -EINVAL;
1105
1106 timing = &dssdev->panel.timings;
1107
1108 vout->fbuf.fmt.height = timing->y_res;
1109 vout->fbuf.fmt.width = timing->x_res;
1110
1111 omap_vout_try_format(&f->fmt.pix);
1112 return 0;
1113 }
1114
1115 static int vidioc_s_fmt_vid_out(struct file *file, void *fh,
1116 struct v4l2_format *f)
1117 {
1118 int ret, bpp;
1119 struct omap_overlay *ovl;
1120 struct omapvideo_info *ovid;
1121 struct omap_video_timings *timing;
1122 struct omap_vout_device *vout = fh;
1123 struct omap_dss_device *dssdev;
1124
1125 if (vout->streaming)
1126 return -EBUSY;
1127
1128 mutex_lock(&vout->lock);
1129
1130 ovid = &vout->vid_info;
1131 ovl = ovid->overlays[0];
1132 dssdev = ovl->get_device(ovl);
1133
1134 /* get the display device attached to the overlay */
1135 if (!dssdev) {
1136 ret = -EINVAL;
1137 goto s_fmt_vid_out_exit;
1138 }
1139 timing = &dssdev->panel.timings;
1140
1141 /* We dont support RGB24-packed mode if vrfb rotation
1142 * is enabled*/
1143 if ((is_rotation_enabled(vout)) &&
1144 f->fmt.pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1145 ret = -EINVAL;
1146 goto s_fmt_vid_out_exit;
1147 }
1148
1149 /* get the framebuffer parameters */
1150
1151 if (is_rotation_90_or_270(vout)) {
1152 vout->fbuf.fmt.height = timing->x_res;
1153 vout->fbuf.fmt.width = timing->y_res;
1154 } else {
1155 vout->fbuf.fmt.height = timing->y_res;
1156 vout->fbuf.fmt.width = timing->x_res;
1157 }
1158
1159 /* change to samller size is OK */
1160
1161 bpp = omap_vout_try_format(&f->fmt.pix);
1162 f->fmt.pix.sizeimage = f->fmt.pix.width * f->fmt.pix.height * bpp;
1163
1164 /* try & set the new output format */
1165 vout->bpp = bpp;
1166 vout->pix = f->fmt.pix;
1167 vout->vrfb_bpp = 1;
1168
1169 /* If YUYV then vrfb bpp is 2, for others its 1 */
1170 if (V4L2_PIX_FMT_YUYV == vout->pix.pixelformat ||
1171 V4L2_PIX_FMT_UYVY == vout->pix.pixelformat)
1172 vout->vrfb_bpp = 2;
1173
1174 /* set default crop and win */
1175 omap_vout_new_format(&vout->pix, &vout->fbuf, &vout->crop, &vout->win);
1176
1177 /* Save the changes in the overlay strcuture */
1178 ret = omapvid_init(vout, 0);
1179 if (ret) {
1180 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1181 goto s_fmt_vid_out_exit;
1182 }
1183
1184 ret = 0;
1185
1186 s_fmt_vid_out_exit:
1187 mutex_unlock(&vout->lock);
1188 return ret;
1189 }
1190
1191 static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh,
1192 struct v4l2_format *f)
1193 {
1194 int ret = 0;
1195 struct omap_vout_device *vout = fh;
1196 struct omap_overlay *ovl;
1197 struct omapvideo_info *ovid;
1198 struct v4l2_window *win = &f->fmt.win;
1199
1200 ovid = &vout->vid_info;
1201 ovl = ovid->overlays[0];
1202
1203 ret = omap_vout_try_window(&vout->fbuf, win);
1204
1205 if (!ret) {
1206 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1207 win->global_alpha = 255;
1208 else
1209 win->global_alpha = f->fmt.win.global_alpha;
1210 }
1211
1212 return ret;
1213 }
1214
1215 static int vidioc_s_fmt_vid_overlay(struct file *file, void *fh,
1216 struct v4l2_format *f)
1217 {
1218 int ret = 0;
1219 struct omap_overlay *ovl;
1220 struct omapvideo_info *ovid;
1221 struct omap_vout_device *vout = fh;
1222 struct v4l2_window *win = &f->fmt.win;
1223
1224 mutex_lock(&vout->lock);
1225 ovid = &vout->vid_info;
1226 ovl = ovid->overlays[0];
1227
1228 ret = omap_vout_new_window(&vout->crop, &vout->win, &vout->fbuf, win);
1229 if (!ret) {
1230 /* Video1 plane does not support global alpha on OMAP3 */
1231 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1232 vout->win.global_alpha = 255;
1233 else
1234 vout->win.global_alpha = f->fmt.win.global_alpha;
1235
1236 vout->win.chromakey = f->fmt.win.chromakey;
1237 }
1238 mutex_unlock(&vout->lock);
1239 return ret;
1240 }
1241
1242 static int vidioc_enum_fmt_vid_overlay(struct file *file, void *fh,
1243 struct v4l2_fmtdesc *fmt)
1244 {
1245 int index = fmt->index;
1246
1247 if (index >= NUM_OUTPUT_FORMATS)
1248 return -EINVAL;
1249
1250 fmt->flags = omap_formats[index].flags;
1251 strlcpy(fmt->description, omap_formats[index].description,
1252 sizeof(fmt->description));
1253 fmt->pixelformat = omap_formats[index].pixelformat;
1254 return 0;
1255 }
1256
1257 static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh,
1258 struct v4l2_format *f)
1259 {
1260 u32 key_value = 0;
1261 struct omap_overlay *ovl;
1262 struct omapvideo_info *ovid;
1263 struct omap_vout_device *vout = fh;
1264 struct omap_overlay_manager_info info;
1265 struct v4l2_window *win = &f->fmt.win;
1266
1267 ovid = &vout->vid_info;
1268 ovl = ovid->overlays[0];
1269
1270 win->w = vout->win.w;
1271 win->field = vout->win.field;
1272 win->global_alpha = vout->win.global_alpha;
1273
1274 if (ovl->manager && ovl->manager->get_manager_info) {
1275 ovl->manager->get_manager_info(ovl->manager, &info);
1276 key_value = info.trans_key;
1277 }
1278 win->chromakey = key_value;
1279 return 0;
1280 }
1281
1282 static int vidioc_cropcap(struct file *file, void *fh,
1283 struct v4l2_cropcap *cropcap)
1284 {
1285 struct omap_vout_device *vout = fh;
1286 struct v4l2_pix_format *pix = &vout->pix;
1287
1288 if (cropcap->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1289 return -EINVAL;
1290
1291 /* Width and height are always even */
1292 cropcap->bounds.width = pix->width & ~1;
1293 cropcap->bounds.height = pix->height & ~1;
1294
1295 omap_vout_default_crop(&vout->pix, &vout->fbuf, &cropcap->defrect);
1296 cropcap->pixelaspect.numerator = 1;
1297 cropcap->pixelaspect.denominator = 1;
1298 return 0;
1299 }
1300
1301 static int vidioc_g_crop(struct file *file, void *fh, struct v4l2_crop *crop)
1302 {
1303 struct omap_vout_device *vout = fh;
1304
1305 if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1306 return -EINVAL;
1307 crop->c = vout->crop;
1308 return 0;
1309 }
1310
1311 static int vidioc_s_crop(struct file *file, void *fh, const struct v4l2_crop *crop)
1312 {
1313 int ret = -EINVAL;
1314 struct omap_vout_device *vout = fh;
1315 struct omapvideo_info *ovid;
1316 struct omap_overlay *ovl;
1317 struct omap_video_timings *timing;
1318 struct omap_dss_device *dssdev;
1319
1320 if (vout->streaming)
1321 return -EBUSY;
1322
1323 mutex_lock(&vout->lock);
1324 ovid = &vout->vid_info;
1325 ovl = ovid->overlays[0];
1326 /* get the display device attached to the overlay */
1327 dssdev = ovl->get_device(ovl);
1328
1329 if (!dssdev) {
1330 ret = -EINVAL;
1331 goto s_crop_err;
1332 }
1333
1334 timing = &dssdev->panel.timings;
1335
1336 if (is_rotation_90_or_270(vout)) {
1337 vout->fbuf.fmt.height = timing->x_res;
1338 vout->fbuf.fmt.width = timing->y_res;
1339 } else {
1340 vout->fbuf.fmt.height = timing->y_res;
1341 vout->fbuf.fmt.width = timing->x_res;
1342 }
1343
1344 if (crop->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1345 ret = omap_vout_new_crop(&vout->pix, &vout->crop, &vout->win,
1346 &vout->fbuf, &crop->c);
1347
1348 s_crop_err:
1349 mutex_unlock(&vout->lock);
1350 return ret;
1351 }
1352
1353 static int vidioc_queryctrl(struct file *file, void *fh,
1354 struct v4l2_queryctrl *ctrl)
1355 {
1356 int ret = 0;
1357
1358 switch (ctrl->id) {
1359 case V4L2_CID_ROTATE:
1360 ret = v4l2_ctrl_query_fill(ctrl, 0, 270, 90, 0);
1361 break;
1362 case V4L2_CID_BG_COLOR:
1363 ret = v4l2_ctrl_query_fill(ctrl, 0, 0xFFFFFF, 1, 0);
1364 break;
1365 case V4L2_CID_VFLIP:
1366 ret = v4l2_ctrl_query_fill(ctrl, 0, 1, 1, 0);
1367 break;
1368 default:
1369 ctrl->name[0] = '\0';
1370 ret = -EINVAL;
1371 }
1372 return ret;
1373 }
1374
1375 static int vidioc_g_ctrl(struct file *file, void *fh, struct v4l2_control *ctrl)
1376 {
1377 int ret = 0;
1378 struct omap_vout_device *vout = fh;
1379
1380 switch (ctrl->id) {
1381 case V4L2_CID_ROTATE:
1382 ctrl->value = vout->control[0].value;
1383 break;
1384 case V4L2_CID_BG_COLOR:
1385 {
1386 struct omap_overlay_manager_info info;
1387 struct omap_overlay *ovl;
1388
1389 ovl = vout->vid_info.overlays[0];
1390 if (!ovl->manager || !ovl->manager->get_manager_info) {
1391 ret = -EINVAL;
1392 break;
1393 }
1394
1395 ovl->manager->get_manager_info(ovl->manager, &info);
1396 ctrl->value = info.default_color;
1397 break;
1398 }
1399 case V4L2_CID_VFLIP:
1400 ctrl->value = vout->control[2].value;
1401 break;
1402 default:
1403 ret = -EINVAL;
1404 }
1405 return ret;
1406 }
1407
1408 static int vidioc_s_ctrl(struct file *file, void *fh, struct v4l2_control *a)
1409 {
1410 int ret = 0;
1411 struct omap_vout_device *vout = fh;
1412
1413 switch (a->id) {
1414 case V4L2_CID_ROTATE:
1415 {
1416 struct omapvideo_info *ovid;
1417 int rotation = a->value;
1418
1419 ovid = &vout->vid_info;
1420
1421 mutex_lock(&vout->lock);
1422 if (rotation && ovid->rotation_type == VOUT_ROT_NONE) {
1423 mutex_unlock(&vout->lock);
1424 ret = -ERANGE;
1425 break;
1426 }
1427
1428 if (rotation && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1429 mutex_unlock(&vout->lock);
1430 ret = -EINVAL;
1431 break;
1432 }
1433
1434 if (v4l2_rot_to_dss_rot(rotation, &vout->rotation,
1435 vout->mirror)) {
1436 mutex_unlock(&vout->lock);
1437 ret = -EINVAL;
1438 break;
1439 }
1440
1441 vout->control[0].value = rotation;
1442 mutex_unlock(&vout->lock);
1443 break;
1444 }
1445 case V4L2_CID_BG_COLOR:
1446 {
1447 struct omap_overlay *ovl;
1448 unsigned int color = a->value;
1449 struct omap_overlay_manager_info info;
1450
1451 ovl = vout->vid_info.overlays[0];
1452
1453 mutex_lock(&vout->lock);
1454 if (!ovl->manager || !ovl->manager->get_manager_info) {
1455 mutex_unlock(&vout->lock);
1456 ret = -EINVAL;
1457 break;
1458 }
1459
1460 ovl->manager->get_manager_info(ovl->manager, &info);
1461 info.default_color = color;
1462 if (ovl->manager->set_manager_info(ovl->manager, &info)) {
1463 mutex_unlock(&vout->lock);
1464 ret = -EINVAL;
1465 break;
1466 }
1467
1468 vout->control[1].value = color;
1469 mutex_unlock(&vout->lock);
1470 break;
1471 }
1472 case V4L2_CID_VFLIP:
1473 {
1474 struct omap_overlay *ovl;
1475 struct omapvideo_info *ovid;
1476 unsigned int mirror = a->value;
1477
1478 ovid = &vout->vid_info;
1479 ovl = ovid->overlays[0];
1480
1481 mutex_lock(&vout->lock);
1482 if (mirror && ovid->rotation_type == VOUT_ROT_NONE) {
1483 mutex_unlock(&vout->lock);
1484 ret = -ERANGE;
1485 break;
1486 }
1487
1488 if (mirror && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1489 mutex_unlock(&vout->lock);
1490 ret = -EINVAL;
1491 break;
1492 }
1493 vout->mirror = mirror;
1494 vout->control[2].value = mirror;
1495 mutex_unlock(&vout->lock);
1496 break;
1497 }
1498 default:
1499 ret = -EINVAL;
1500 }
1501 return ret;
1502 }
1503
1504 static int vidioc_reqbufs(struct file *file, void *fh,
1505 struct v4l2_requestbuffers *req)
1506 {
1507 int ret = 0;
1508 unsigned int i, num_buffers = 0;
1509 struct omap_vout_device *vout = fh;
1510 struct videobuf_queue *q = &vout->vbq;
1511
1512 if ((req->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) || (req->count < 0))
1513 return -EINVAL;
1514 /* if memory is not mmp or userptr
1515 return error */
1516 if ((V4L2_MEMORY_MMAP != req->memory) &&
1517 (V4L2_MEMORY_USERPTR != req->memory))
1518 return -EINVAL;
1519
1520 mutex_lock(&vout->lock);
1521 /* Cannot be requested when streaming is on */
1522 if (vout->streaming) {
1523 ret = -EBUSY;
1524 goto reqbuf_err;
1525 }
1526
1527 /* If buffers are already allocated free them */
1528 if (q->bufs[0] && (V4L2_MEMORY_MMAP == q->bufs[0]->memory)) {
1529 if (vout->mmap_count) {
1530 ret = -EBUSY;
1531 goto reqbuf_err;
1532 }
1533 num_buffers = (vout->vid == OMAP_VIDEO1) ?
1534 video1_numbuffers : video2_numbuffers;
1535 for (i = num_buffers; i < vout->buffer_allocated; i++) {
1536 omap_vout_free_buffer(vout->buf_virt_addr[i],
1537 vout->buffer_size);
1538 vout->buf_virt_addr[i] = 0;
1539 vout->buf_phy_addr[i] = 0;
1540 }
1541 vout->buffer_allocated = num_buffers;
1542 videobuf_mmap_free(q);
1543 } else if (q->bufs[0] && (V4L2_MEMORY_USERPTR == q->bufs[0]->memory)) {
1544 if (vout->buffer_allocated) {
1545 videobuf_mmap_free(q);
1546 for (i = 0; i < vout->buffer_allocated; i++) {
1547 kfree(q->bufs[i]);
1548 q->bufs[i] = NULL;
1549 }
1550 vout->buffer_allocated = 0;
1551 }
1552 }
1553
1554 /*store the memory type in data structure */
1555 vout->memory = req->memory;
1556
1557 INIT_LIST_HEAD(&vout->dma_queue);
1558
1559 /* call videobuf_reqbufs api */
1560 ret = videobuf_reqbufs(q, req);
1561 if (ret < 0)
1562 goto reqbuf_err;
1563
1564 vout->buffer_allocated = req->count;
1565
1566 reqbuf_err:
1567 mutex_unlock(&vout->lock);
1568 return ret;
1569 }
1570
1571 static int vidioc_querybuf(struct file *file, void *fh,
1572 struct v4l2_buffer *b)
1573 {
1574 struct omap_vout_device *vout = fh;
1575
1576 return videobuf_querybuf(&vout->vbq, b);
1577 }
1578
1579 static int vidioc_qbuf(struct file *file, void *fh,
1580 struct v4l2_buffer *buffer)
1581 {
1582 struct omap_vout_device *vout = fh;
1583 struct videobuf_queue *q = &vout->vbq;
1584
1585 if ((V4L2_BUF_TYPE_VIDEO_OUTPUT != buffer->type) ||
1586 (buffer->index >= vout->buffer_allocated) ||
1587 (q->bufs[buffer->index]->memory != buffer->memory)) {
1588 return -EINVAL;
1589 }
1590 if (V4L2_MEMORY_USERPTR == buffer->memory) {
1591 if ((buffer->length < vout->pix.sizeimage) ||
1592 (0 == buffer->m.userptr)) {
1593 return -EINVAL;
1594 }
1595 }
1596
1597 if ((is_rotation_enabled(vout)) &&
1598 vout->vrfb_dma_tx.req_status == DMA_CHAN_NOT_ALLOTED) {
1599 v4l2_warn(&vout->vid_dev->v4l2_dev,
1600 "DMA Channel not allocated for Rotation\n");
1601 return -EINVAL;
1602 }
1603
1604 return videobuf_qbuf(q, buffer);
1605 }
1606
1607 static int vidioc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *b)
1608 {
1609 struct omap_vout_device *vout = fh;
1610 struct videobuf_queue *q = &vout->vbq;
1611
1612 int ret;
1613 u32 addr;
1614 unsigned long size;
1615 struct videobuf_buffer *vb;
1616
1617 vb = q->bufs[b->index];
1618
1619 if (!vout->streaming)
1620 return -EINVAL;
1621
1622 if (file->f_flags & O_NONBLOCK)
1623 /* Call videobuf_dqbuf for non blocking mode */
1624 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 1);
1625 else
1626 /* Call videobuf_dqbuf for blocking mode */
1627 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 0);
1628
1629 addr = (unsigned long) vout->buf_phy_addr[vb->i];
1630 size = (unsigned long) vb->size;
1631 dma_unmap_single(vout->vid_dev->v4l2_dev.dev, addr,
1632 size, DMA_TO_DEVICE);
1633 return ret;
1634 }
1635
1636 static int vidioc_streamon(struct file *file, void *fh, enum v4l2_buf_type i)
1637 {
1638 int ret = 0, j;
1639 u32 addr = 0, mask = 0;
1640 struct omap_vout_device *vout = fh;
1641 struct videobuf_queue *q = &vout->vbq;
1642 struct omapvideo_info *ovid = &vout->vid_info;
1643
1644 mutex_lock(&vout->lock);
1645
1646 if (vout->streaming) {
1647 ret = -EBUSY;
1648 goto streamon_err;
1649 }
1650
1651 ret = videobuf_streamon(q);
1652 if (ret)
1653 goto streamon_err;
1654
1655 if (list_empty(&vout->dma_queue)) {
1656 ret = -EIO;
1657 goto streamon_err1;
1658 }
1659
1660 /* Get the next frame from the buffer queue */
1661 vout->next_frm = vout->cur_frm = list_entry(vout->dma_queue.next,
1662 struct videobuf_buffer, queue);
1663 /* Remove buffer from the buffer queue */
1664 list_del(&vout->cur_frm->queue);
1665 /* Mark state of the current frame to active */
1666 vout->cur_frm->state = VIDEOBUF_ACTIVE;
1667 /* Initialize field_id and started member */
1668 vout->field_id = 0;
1669
1670 /* set flag here. Next QBUF will start DMA */
1671 vout->streaming = 1;
1672
1673 vout->first_int = 1;
1674
1675 if (omap_vout_calculate_offset(vout)) {
1676 ret = -EINVAL;
1677 goto streamon_err1;
1678 }
1679 addr = (unsigned long) vout->queued_buf_addr[vout->cur_frm->i]
1680 + vout->cropped_offset;
1681
1682 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1683 | DISPC_IRQ_VSYNC2;
1684
1685 omap_dispc_register_isr(omap_vout_isr, vout, mask);
1686
1687 for (j = 0; j < ovid->num_overlays; j++) {
1688 struct omap_overlay *ovl = ovid->overlays[j];
1689
1690 if (ovl->get_device(ovl)) {
1691 struct omap_overlay_info info;
1692 ovl->get_overlay_info(ovl, &info);
1693 info.paddr = addr;
1694 if (ovl->set_overlay_info(ovl, &info)) {
1695 ret = -EINVAL;
1696 goto streamon_err1;
1697 }
1698 }
1699 }
1700
1701 /* First save the configuration in ovelray structure */
1702 ret = omapvid_init(vout, addr);
1703 if (ret)
1704 v4l2_err(&vout->vid_dev->v4l2_dev,
1705 "failed to set overlay info\n");
1706 /* Enable the pipeline and set the Go bit */
1707 ret = omapvid_apply_changes(vout);
1708 if (ret)
1709 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1710
1711 for (j = 0; j < ovid->num_overlays; j++) {
1712 struct omap_overlay *ovl = ovid->overlays[j];
1713 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1714
1715 if (dssdev) {
1716 ret = ovl->enable(ovl);
1717 if (ret)
1718 goto streamon_err1;
1719 }
1720 }
1721
1722 ret = 0;
1723
1724 streamon_err1:
1725 if (ret)
1726 ret = videobuf_streamoff(q);
1727 streamon_err:
1728 mutex_unlock(&vout->lock);
1729 return ret;
1730 }
1731
1732 static int vidioc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i)
1733 {
1734 u32 mask = 0;
1735 int ret = 0, j;
1736 struct omap_vout_device *vout = fh;
1737 struct omapvideo_info *ovid = &vout->vid_info;
1738
1739 if (!vout->streaming)
1740 return -EINVAL;
1741
1742 vout->streaming = 0;
1743 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1744 | DISPC_IRQ_VSYNC2;
1745
1746 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
1747
1748 for (j = 0; j < ovid->num_overlays; j++) {
1749 struct omap_overlay *ovl = ovid->overlays[j];
1750 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1751
1752 if (dssdev)
1753 ovl->disable(ovl);
1754 }
1755
1756 /* Turn of the pipeline */
1757 ret = omapvid_apply_changes(vout);
1758 if (ret)
1759 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode in"
1760 " streamoff\n");
1761
1762 INIT_LIST_HEAD(&vout->dma_queue);
1763 ret = videobuf_streamoff(&vout->vbq);
1764
1765 return ret;
1766 }
1767
1768 static int vidioc_s_fbuf(struct file *file, void *fh,
1769 const struct v4l2_framebuffer *a)
1770 {
1771 int enable = 0;
1772 struct omap_overlay *ovl;
1773 struct omapvideo_info *ovid;
1774 struct omap_vout_device *vout = fh;
1775 struct omap_overlay_manager_info info;
1776 enum omap_dss_trans_key_type key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1777
1778 ovid = &vout->vid_info;
1779 ovl = ovid->overlays[0];
1780
1781 /* OMAP DSS doesn't support Source and Destination color
1782 key together */
1783 if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY) &&
1784 (a->flags & V4L2_FBUF_FLAG_CHROMAKEY))
1785 return -EINVAL;
1786 /* OMAP DSS Doesn't support the Destination color key
1787 and alpha blending together */
1788 if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY) &&
1789 (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA))
1790 return -EINVAL;
1791
1792 if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY)) {
1793 vout->fbuf.flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1794 key_type = OMAP_DSS_COLOR_KEY_VID_SRC;
1795 } else
1796 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1797
1798 if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY)) {
1799 vout->fbuf.flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1800 key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1801 } else
1802 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_CHROMAKEY;
1803
1804 if (a->flags & (V4L2_FBUF_FLAG_CHROMAKEY |
1805 V4L2_FBUF_FLAG_SRC_CHROMAKEY))
1806 enable = 1;
1807 else
1808 enable = 0;
1809 if (ovl->manager && ovl->manager->get_manager_info &&
1810 ovl->manager->set_manager_info) {
1811
1812 ovl->manager->get_manager_info(ovl->manager, &info);
1813 info.trans_enabled = enable;
1814 info.trans_key_type = key_type;
1815 info.trans_key = vout->win.chromakey;
1816
1817 if (ovl->manager->set_manager_info(ovl->manager, &info))
1818 return -EINVAL;
1819 }
1820 if (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA) {
1821 vout->fbuf.flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1822 enable = 1;
1823 } else {
1824 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_LOCAL_ALPHA;
1825 enable = 0;
1826 }
1827 if (ovl->manager && ovl->manager->get_manager_info &&
1828 ovl->manager->set_manager_info) {
1829 ovl->manager->get_manager_info(ovl->manager, &info);
1830 /* enable this only if there is no zorder cap */
1831 if ((ovl->caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
1832 info.partial_alpha_enabled = enable;
1833 if (ovl->manager->set_manager_info(ovl->manager, &info))
1834 return -EINVAL;
1835 }
1836
1837 return 0;
1838 }
1839
1840 static int vidioc_g_fbuf(struct file *file, void *fh,
1841 struct v4l2_framebuffer *a)
1842 {
1843 struct omap_overlay *ovl;
1844 struct omapvideo_info *ovid;
1845 struct omap_vout_device *vout = fh;
1846 struct omap_overlay_manager_info info;
1847
1848 ovid = &vout->vid_info;
1849 ovl = ovid->overlays[0];
1850
1851 /* The video overlay must stay within the framebuffer and can't be
1852 positioned independently. */
1853 a->flags = V4L2_FBUF_FLAG_OVERLAY;
1854 a->capability = V4L2_FBUF_CAP_LOCAL_ALPHA | V4L2_FBUF_CAP_CHROMAKEY
1855 | V4L2_FBUF_CAP_SRC_CHROMAKEY;
1856
1857 if (ovl->manager && ovl->manager->get_manager_info) {
1858 ovl->manager->get_manager_info(ovl->manager, &info);
1859 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_VID_SRC)
1860 a->flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1861 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_GFX_DST)
1862 a->flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1863 }
1864 if (ovl->manager && ovl->manager->get_manager_info) {
1865 ovl->manager->get_manager_info(ovl->manager, &info);
1866 if (info.partial_alpha_enabled)
1867 a->flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1868 }
1869
1870 return 0;
1871 }
1872
1873 static const struct v4l2_ioctl_ops vout_ioctl_ops = {
1874 .vidioc_querycap = vidioc_querycap,
1875 .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out,
1876 .vidioc_g_fmt_vid_out = vidioc_g_fmt_vid_out,
1877 .vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out,
1878 .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out,
1879 .vidioc_queryctrl = vidioc_queryctrl,
1880 .vidioc_g_ctrl = vidioc_g_ctrl,
1881 .vidioc_s_fbuf = vidioc_s_fbuf,
1882 .vidioc_g_fbuf = vidioc_g_fbuf,
1883 .vidioc_s_ctrl = vidioc_s_ctrl,
1884 .vidioc_try_fmt_vid_overlay = vidioc_try_fmt_vid_overlay,
1885 .vidioc_s_fmt_vid_overlay = vidioc_s_fmt_vid_overlay,
1886 .vidioc_enum_fmt_vid_overlay = vidioc_enum_fmt_vid_overlay,
1887 .vidioc_g_fmt_vid_overlay = vidioc_g_fmt_vid_overlay,
1888 .vidioc_cropcap = vidioc_cropcap,
1889 .vidioc_g_crop = vidioc_g_crop,
1890 .vidioc_s_crop = vidioc_s_crop,
1891 .vidioc_reqbufs = vidioc_reqbufs,
1892 .vidioc_querybuf = vidioc_querybuf,
1893 .vidioc_qbuf = vidioc_qbuf,
1894 .vidioc_dqbuf = vidioc_dqbuf,
1895 .vidioc_streamon = vidioc_streamon,
1896 .vidioc_streamoff = vidioc_streamoff,
1897 };
1898
1899 static const struct v4l2_file_operations omap_vout_fops = {
1900 .owner = THIS_MODULE,
1901 .poll = omap_vout_poll,
1902 .unlocked_ioctl = video_ioctl2,
1903 .mmap = omap_vout_mmap,
1904 .open = omap_vout_open,
1905 .release = omap_vout_release,
1906 };
1907
1908 /* Init functions used during driver initialization */
1909 /* Initial setup of video_data */
1910 static int __init omap_vout_setup_video_data(struct omap_vout_device *vout)
1911 {
1912 struct video_device *vfd;
1913 struct v4l2_pix_format *pix;
1914 struct v4l2_control *control;
1915 struct omap_overlay *ovl = vout->vid_info.overlays[0];
1916 struct omap_dss_device *display = ovl->get_device(ovl);
1917
1918 /* set the default pix */
1919 pix = &vout->pix;
1920
1921 /* Set the default picture of QVGA */
1922 pix->width = QQVGA_WIDTH;
1923 pix->height = QQVGA_HEIGHT;
1924
1925 /* Default pixel format is RGB 5-6-5 */
1926 pix->pixelformat = V4L2_PIX_FMT_RGB565;
1927 pix->field = V4L2_FIELD_ANY;
1928 pix->bytesperline = pix->width * 2;
1929 pix->sizeimage = pix->bytesperline * pix->height;
1930 pix->priv = 0;
1931 pix->colorspace = V4L2_COLORSPACE_JPEG;
1932
1933 vout->bpp = RGB565_BPP;
1934 vout->fbuf.fmt.width = display->panel.timings.x_res;
1935 vout->fbuf.fmt.height = display->panel.timings.y_res;
1936
1937 /* Set the data structures for the overlay parameters*/
1938 vout->win.global_alpha = 255;
1939 vout->fbuf.flags = 0;
1940 vout->fbuf.capability = V4L2_FBUF_CAP_LOCAL_ALPHA |
1941 V4L2_FBUF_CAP_SRC_CHROMAKEY | V4L2_FBUF_CAP_CHROMAKEY;
1942 vout->win.chromakey = 0;
1943
1944 omap_vout_new_format(pix, &vout->fbuf, &vout->crop, &vout->win);
1945
1946 /*Initialize the control variables for
1947 rotation, flipping and background color. */
1948 control = vout->control;
1949 control[0].id = V4L2_CID_ROTATE;
1950 control[0].value = 0;
1951 vout->rotation = 0;
1952 vout->mirror = 0;
1953 vout->control[2].id = V4L2_CID_HFLIP;
1954 vout->control[2].value = 0;
1955 if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
1956 vout->vrfb_bpp = 2;
1957
1958 control[1].id = V4L2_CID_BG_COLOR;
1959 control[1].value = 0;
1960
1961 /* initialize the video_device struct */
1962 vfd = vout->vfd = video_device_alloc();
1963
1964 if (!vfd) {
1965 printk(KERN_ERR VOUT_NAME ": could not allocate"
1966 " video device struct\n");
1967 return -ENOMEM;
1968 }
1969 vfd->release = video_device_release;
1970 vfd->ioctl_ops = &vout_ioctl_ops;
1971
1972 strlcpy(vfd->name, VOUT_NAME, sizeof(vfd->name));
1973
1974 vfd->fops = &omap_vout_fops;
1975 vfd->v4l2_dev = &vout->vid_dev->v4l2_dev;
1976 vfd->vfl_dir = VFL_DIR_TX;
1977 mutex_init(&vout->lock);
1978
1979 vfd->minor = -1;
1980 return 0;
1981
1982 }
1983
1984 /* Setup video buffers */
1985 static int __init omap_vout_setup_video_bufs(struct platform_device *pdev,
1986 int vid_num)
1987 {
1988 u32 numbuffers;
1989 int ret = 0, i;
1990 struct omapvideo_info *ovid;
1991 struct omap_vout_device *vout;
1992 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1993 struct omap2video_device *vid_dev =
1994 container_of(v4l2_dev, struct omap2video_device, v4l2_dev);
1995
1996 vout = vid_dev->vouts[vid_num];
1997 ovid = &vout->vid_info;
1998
1999 numbuffers = (vid_num == 0) ? video1_numbuffers : video2_numbuffers;
2000 vout->buffer_size = (vid_num == 0) ? video1_bufsize : video2_bufsize;
2001 dev_info(&pdev->dev, "Buffer Size = %d\n", vout->buffer_size);
2002
2003 for (i = 0; i < numbuffers; i++) {
2004 vout->buf_virt_addr[i] =
2005 omap_vout_alloc_buffer(vout->buffer_size,
2006 (u32 *) &vout->buf_phy_addr[i]);
2007 if (!vout->buf_virt_addr[i]) {
2008 numbuffers = i;
2009 ret = -ENOMEM;
2010 goto free_buffers;
2011 }
2012 }
2013
2014 vout->cropped_offset = 0;
2015
2016 if (ovid->rotation_type == VOUT_ROT_VRFB) {
2017 int static_vrfb_allocation = (vid_num == 0) ?
2018 vid1_static_vrfb_alloc : vid2_static_vrfb_alloc;
2019 ret = omap_vout_setup_vrfb_bufs(pdev, vid_num,
2020 static_vrfb_allocation);
2021 }
2022
2023 return ret;
2024
2025 free_buffers:
2026 for (i = 0; i < numbuffers; i++) {
2027 omap_vout_free_buffer(vout->buf_virt_addr[i],
2028 vout->buffer_size);
2029 vout->buf_virt_addr[i] = 0;
2030 vout->buf_phy_addr[i] = 0;
2031 }
2032 return ret;
2033
2034 }
2035
2036 /* Create video out devices */
2037 static int __init omap_vout_create_video_devices(struct platform_device *pdev)
2038 {
2039 int ret = 0, k;
2040 struct omap_vout_device *vout;
2041 struct video_device *vfd = NULL;
2042 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2043 struct omap2video_device *vid_dev = container_of(v4l2_dev,
2044 struct omap2video_device, v4l2_dev);
2045
2046 for (k = 0; k < pdev->num_resources; k++) {
2047
2048 vout = kzalloc(sizeof(struct omap_vout_device), GFP_KERNEL);
2049 if (!vout) {
2050 dev_err(&pdev->dev, ": could not allocate memory\n");
2051 return -ENOMEM;
2052 }
2053
2054 vout->vid = k;
2055 vid_dev->vouts[k] = vout;
2056 vout->vid_dev = vid_dev;
2057 /* Select video2 if only 1 overlay is controlled by V4L2 */
2058 if (pdev->num_resources == 1)
2059 vout->vid_info.overlays[0] = vid_dev->overlays[k + 2];
2060 else
2061 /* Else select video1 and video2 one by one. */
2062 vout->vid_info.overlays[0] = vid_dev->overlays[k + 1];
2063 vout->vid_info.num_overlays = 1;
2064 vout->vid_info.id = k + 1;
2065
2066 /* Set VRFB as rotation_type for omap2 and omap3 */
2067 if (cpu_is_omap24xx() || cpu_is_omap34xx())
2068 vout->vid_info.rotation_type = VOUT_ROT_VRFB;
2069
2070 /* Setup the default configuration for the video devices
2071 */
2072 if (omap_vout_setup_video_data(vout) != 0) {
2073 ret = -ENOMEM;
2074 goto error;
2075 }
2076
2077 /* Allocate default number of buffers for the video streaming
2078 * and reserve the VRFB space for rotation
2079 */
2080 if (omap_vout_setup_video_bufs(pdev, k) != 0) {
2081 ret = -ENOMEM;
2082 goto error1;
2083 }
2084
2085 /* Register the Video device with V4L2
2086 */
2087 vfd = vout->vfd;
2088 if (video_register_device(vfd, VFL_TYPE_GRABBER, -1) < 0) {
2089 dev_err(&pdev->dev, ": Could not register "
2090 "Video for Linux device\n");
2091 vfd->minor = -1;
2092 ret = -ENODEV;
2093 goto error2;
2094 }
2095 video_set_drvdata(vfd, vout);
2096
2097 /* Configure the overlay structure */
2098 ret = omapvid_init(vid_dev->vouts[k], 0);
2099 if (!ret)
2100 goto success;
2101
2102 error2:
2103 if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
2104 omap_vout_release_vrfb(vout);
2105 omap_vout_free_buffers(vout);
2106 error1:
2107 video_device_release(vfd);
2108 error:
2109 kfree(vout);
2110 return ret;
2111
2112 success:
2113 dev_info(&pdev->dev, ": registered and initialized"
2114 " video device %d\n", vfd->minor);
2115 if (k == (pdev->num_resources - 1))
2116 return 0;
2117 }
2118
2119 return -ENODEV;
2120 }
2121 /* Driver functions */
2122 static void omap_vout_cleanup_device(struct omap_vout_device *vout)
2123 {
2124 struct video_device *vfd;
2125 struct omapvideo_info *ovid;
2126
2127 if (!vout)
2128 return;
2129
2130 vfd = vout->vfd;
2131 ovid = &vout->vid_info;
2132 if (vfd) {
2133 if (!video_is_registered(vfd)) {
2134 /*
2135 * The device was never registered, so release the
2136 * video_device struct directly.
2137 */
2138 video_device_release(vfd);
2139 } else {
2140 /*
2141 * The unregister function will release the video_device
2142 * struct as well as unregistering it.
2143 */
2144 video_unregister_device(vfd);
2145 }
2146 }
2147 if (ovid->rotation_type == VOUT_ROT_VRFB) {
2148 omap_vout_release_vrfb(vout);
2149 /* Free the VRFB buffer if allocated
2150 * init time
2151 */
2152 if (vout->vrfb_static_allocation)
2153 omap_vout_free_vrfb_buffers(vout);
2154 }
2155 omap_vout_free_buffers(vout);
2156
2157 kfree(vout);
2158 }
2159
2160 static int omap_vout_remove(struct platform_device *pdev)
2161 {
2162 int k;
2163 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2164 struct omap2video_device *vid_dev = container_of(v4l2_dev, struct
2165 omap2video_device, v4l2_dev);
2166
2167 v4l2_device_unregister(v4l2_dev);
2168 for (k = 0; k < pdev->num_resources; k++)
2169 omap_vout_cleanup_device(vid_dev->vouts[k]);
2170
2171 for (k = 0; k < vid_dev->num_displays; k++) {
2172 if (vid_dev->displays[k]->state != OMAP_DSS_DISPLAY_DISABLED)
2173 vid_dev->displays[k]->driver->disable(vid_dev->displays[k]);
2174
2175 omap_dss_put_device(vid_dev->displays[k]);
2176 }
2177 kfree(vid_dev);
2178 return 0;
2179 }
2180
2181 static int __init omap_vout_probe(struct platform_device *pdev)
2182 {
2183 int ret = 0, i;
2184 struct omap_overlay *ovl;
2185 struct omap_dss_device *dssdev = NULL;
2186 struct omap_dss_device *def_display;
2187 struct omap2video_device *vid_dev = NULL;
2188
2189 if (pdev->num_resources == 0) {
2190 dev_err(&pdev->dev, "probed for an unknown device\n");
2191 return -ENODEV;
2192 }
2193
2194 vid_dev = kzalloc(sizeof(struct omap2video_device), GFP_KERNEL);
2195 if (vid_dev == NULL)
2196 return -ENOMEM;
2197
2198 vid_dev->num_displays = 0;
2199 for_each_dss_dev(dssdev) {
2200 omap_dss_get_device(dssdev);
2201
2202 if (!dssdev->driver) {
2203 dev_warn(&pdev->dev, "no driver for display: %s\n",
2204 dssdev->name);
2205 omap_dss_put_device(dssdev);
2206 continue;
2207 }
2208
2209 vid_dev->displays[vid_dev->num_displays++] = dssdev;
2210 }
2211
2212 if (vid_dev->num_displays == 0) {
2213 dev_err(&pdev->dev, "no displays\n");
2214 ret = -EINVAL;
2215 goto probe_err0;
2216 }
2217
2218 vid_dev->num_overlays = omap_dss_get_num_overlays();
2219 for (i = 0; i < vid_dev->num_overlays; i++)
2220 vid_dev->overlays[i] = omap_dss_get_overlay(i);
2221
2222 vid_dev->num_managers = omap_dss_get_num_overlay_managers();
2223 for (i = 0; i < vid_dev->num_managers; i++)
2224 vid_dev->managers[i] = omap_dss_get_overlay_manager(i);
2225
2226 /* Get the Video1 overlay and video2 overlay.
2227 * Setup the Display attached to that overlays
2228 */
2229 for (i = 1; i < vid_dev->num_overlays; i++) {
2230 ovl = omap_dss_get_overlay(i);
2231 dssdev = ovl->get_device(ovl);
2232
2233 if (dssdev) {
2234 def_display = dssdev;
2235 } else {
2236 dev_warn(&pdev->dev, "cannot find display\n");
2237 def_display = NULL;
2238 }
2239 if (def_display) {
2240 struct omap_dss_driver *dssdrv = def_display->driver;
2241
2242 ret = dssdrv->enable(def_display);
2243 if (ret) {
2244 /* Here we are not considering a error
2245 * as display may be enabled by frame
2246 * buffer driver
2247 */
2248 dev_warn(&pdev->dev,
2249 "'%s' Display already enabled\n",
2250 def_display->name);
2251 }
2252 }
2253 }
2254
2255 if (v4l2_device_register(&pdev->dev, &vid_dev->v4l2_dev) < 0) {
2256 dev_err(&pdev->dev, "v4l2_device_register failed\n");
2257 ret = -ENODEV;
2258 goto probe_err1;
2259 }
2260
2261 ret = omap_vout_create_video_devices(pdev);
2262 if (ret)
2263 goto probe_err2;
2264
2265 for (i = 0; i < vid_dev->num_displays; i++) {
2266 struct omap_dss_device *display = vid_dev->displays[i];
2267
2268 if (display->driver->update)
2269 display->driver->update(display, 0, 0,
2270 display->panel.timings.x_res,
2271 display->panel.timings.y_res);
2272 }
2273 return 0;
2274
2275 probe_err2:
2276 v4l2_device_unregister(&vid_dev->v4l2_dev);
2277 probe_err1:
2278 for (i = 1; i < vid_dev->num_overlays; i++) {
2279 def_display = NULL;
2280 ovl = omap_dss_get_overlay(i);
2281 dssdev = ovl->get_device(ovl);
2282
2283 if (dssdev)
2284 def_display = dssdev;
2285
2286 if (def_display && def_display->driver)
2287 def_display->driver->disable(def_display);
2288 }
2289 probe_err0:
2290 kfree(vid_dev);
2291 return ret;
2292 }
2293
2294 static struct platform_driver omap_vout_driver = {
2295 .driver = {
2296 .name = VOUT_NAME,
2297 },
2298 .remove = omap_vout_remove,
2299 };
2300
2301 static int __init omap_vout_init(void)
2302 {
2303 if (platform_driver_probe(&omap_vout_driver, omap_vout_probe) != 0) {
2304 printk(KERN_ERR VOUT_NAME ":Could not register Video driver\n");
2305 return -EINVAL;
2306 }
2307 return 0;
2308 }
2309
2310 static void omap_vout_cleanup(void)
2311 {
2312 platform_driver_unregister(&omap_vout_driver);
2313 }
2314
2315 late_initcall(omap_vout_init);
2316 module_exit(omap_vout_cleanup);
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