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[media] omap_vout: add missing OVERLAY_OUTPUT cap and set V4L2_FBUF_FLAG_OVERLAY
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / media / video / omap / omap_vout.c
blob1e7c0d6205e64ce6819dbc078d898b848b1230e5
1 /*
2 * omap_vout.c
3 *
4 * Copyright (C) 2005-2010 Texas Instruments.
5 *
6 * This file is licensed under the terms of the GNU General Public License
7 * version 2. This program is licensed "as is" without any warranty of any
8 * kind, whether express or implied.
9 *
10 * Leveraged code from the OMAP2 camera driver
11 * Video-for-Linux (Version 2) camera capture driver for
12 * the OMAP24xx camera controller.
13 *
14 * Author: Andy Lowe (source@mvista.com)
15 *
16 * Copyright (C) 2004 MontaVista Software, Inc.
17 * Copyright (C) 2010 Texas Instruments.
18 *
19 * History:
20 * 20-APR-2006 Khasim Modified VRFB based Rotation,
21 * The image data is always read from 0 degree
22 * view and written
23 * to the virtual space of desired rotation angle
24 * 4-DEC-2006 Jian Changed to support better memory management
25 *
26 * 17-Nov-2008 Hardik Changed driver to use video_ioctl2
27 *
28 * 23-Feb-2010 Vaibhav H Modified to use new DSS2 interface
29 *
30 */
31
32 #include <linux/init.h>
33 #include <linux/module.h>
34 #include <linux/vmalloc.h>
35 #include <linux/sched.h>
36 #include <linux/types.h>
37 #include <linux/platform_device.h>
38 #include <linux/irq.h>
39 #include <linux/videodev2.h>
40 #include <linux/dma-mapping.h>
41 #include <linux/slab.h>
42
43 #include <media/videobuf-dma-contig.h>
44 #include <media/v4l2-device.h>
45 #include <media/v4l2-ioctl.h>
46
47 #include <plat/dma.h>
48 #include <plat/vrfb.h>
49 #include <video/omapdss.h>
50
51 #include "omap_voutlib.h"
52 #include "omap_voutdef.h"
53 #include "omap_vout_vrfb.h"
54
55 MODULE_AUTHOR("Texas Instruments");
56 MODULE_DESCRIPTION("OMAP Video for Linux Video out driver");
57 MODULE_LICENSE("GPL");
58
59 /* Driver Configuration macros */
60 #define VOUT_NAME "omap_vout"
61
62 enum omap_vout_channels {
63 OMAP_VIDEO1,
64 OMAP_VIDEO2,
65 };
66
67 static struct videobuf_queue_ops video_vbq_ops;
68 /* Variables configurable through module params*/
69 static u32 video1_numbuffers = 3;
70 static u32 video2_numbuffers = 3;
71 static u32 video1_bufsize = OMAP_VOUT_MAX_BUF_SIZE;
72 static u32 video2_bufsize = OMAP_VOUT_MAX_BUF_SIZE;
73 static u32 vid1_static_vrfb_alloc;
74 static u32 vid2_static_vrfb_alloc;
75 static int debug;
76
77 /* Module parameters */
78 module_param(video1_numbuffers, uint, S_IRUGO);
79 MODULE_PARM_DESC(video1_numbuffers,
80 "Number of buffers to be allocated at init time for Video1 device.");
81
82 module_param(video2_numbuffers, uint, S_IRUGO);
83 MODULE_PARM_DESC(video2_numbuffers,
84 "Number of buffers to be allocated at init time for Video2 device.");
85
86 module_param(video1_bufsize, uint, S_IRUGO);
87 MODULE_PARM_DESC(video1_bufsize,
88 "Size of the buffer to be allocated for video1 device");
89
90 module_param(video2_bufsize, uint, S_IRUGO);
91 MODULE_PARM_DESC(video2_bufsize,
92 "Size of the buffer to be allocated for video2 device");
93
94 module_param(vid1_static_vrfb_alloc, bool, S_IRUGO);
95 MODULE_PARM_DESC(vid1_static_vrfb_alloc,
96 "Static allocation of the VRFB buffer for video1 device");
97
98 module_param(vid2_static_vrfb_alloc, bool, S_IRUGO);
99 MODULE_PARM_DESC(vid2_static_vrfb_alloc,
100 "Static allocation of the VRFB buffer for video2 device");
101
102 module_param(debug, bool, S_IRUGO);
103 MODULE_PARM_DESC(debug, "Debug level (0-1)");
104
105 /* list of image formats supported by OMAP2 video pipelines */
106 static const struct v4l2_fmtdesc omap_formats[] = {
107 {
108 /* Note: V4L2 defines RGB565 as:
109 *
110 * Byte 0 Byte 1
111 * g2 g1 g0 r4 r3 r2 r1 r0 b4 b3 b2 b1 b0 g5 g4 g3
112 *
113 * We interpret RGB565 as:
114 *
115 * Byte 0 Byte 1
116 * g2 g1 g0 b4 b3 b2 b1 b0 r4 r3 r2 r1 r0 g5 g4 g3
117 */
118 .description = "RGB565, le",
119 .pixelformat = V4L2_PIX_FMT_RGB565,
120 },
121 {
122 /* Note: V4L2 defines RGB32 as: RGB-8-8-8-8 we use
123 * this for RGB24 unpack mode, the last 8 bits are ignored
124 * */
125 .description = "RGB32, le",
126 .pixelformat = V4L2_PIX_FMT_RGB32,
127 },
128 {
129 /* Note: V4L2 defines RGB24 as: RGB-8-8-8 we use
130 * this for RGB24 packed mode
131 *
132 */
133 .description = "RGB24, le",
134 .pixelformat = V4L2_PIX_FMT_RGB24,
135 },
136 {
137 .description = "YUYV (YUV 4:2:2), packed",
138 .pixelformat = V4L2_PIX_FMT_YUYV,
139 },
140 {
141 .description = "UYVY, packed",
142 .pixelformat = V4L2_PIX_FMT_UYVY,
143 },
144 };
145
146 #define NUM_OUTPUT_FORMATS (ARRAY_SIZE(omap_formats))
147
148 /*
149 * Try format
150 */
151 static int omap_vout_try_format(struct v4l2_pix_format *pix)
152 {
153 int ifmt, bpp = 0;
154
155 pix->height = clamp(pix->height, (u32)VID_MIN_HEIGHT,
156 (u32)VID_MAX_HEIGHT);
157 pix->width = clamp(pix->width, (u32)VID_MIN_WIDTH, (u32)VID_MAX_WIDTH);
158
159 for (ifmt = 0; ifmt < NUM_OUTPUT_FORMATS; ifmt++) {
160 if (pix->pixelformat == omap_formats[ifmt].pixelformat)
161 break;
162 }
163
164 if (ifmt == NUM_OUTPUT_FORMATS)
165 ifmt = 0;
166
167 pix->pixelformat = omap_formats[ifmt].pixelformat;
168 pix->field = V4L2_FIELD_ANY;
169 pix->priv = 0;
170
171 switch (pix->pixelformat) {
172 case V4L2_PIX_FMT_YUYV:
173 case V4L2_PIX_FMT_UYVY:
174 default:
175 pix->colorspace = V4L2_COLORSPACE_JPEG;
176 bpp = YUYV_BPP;
177 break;
178 case V4L2_PIX_FMT_RGB565:
179 case V4L2_PIX_FMT_RGB565X:
180 pix->colorspace = V4L2_COLORSPACE_SRGB;
181 bpp = RGB565_BPP;
182 break;
183 case V4L2_PIX_FMT_RGB24:
184 pix->colorspace = V4L2_COLORSPACE_SRGB;
185 bpp = RGB24_BPP;
186 break;
187 case V4L2_PIX_FMT_RGB32:
188 case V4L2_PIX_FMT_BGR32:
189 pix->colorspace = V4L2_COLORSPACE_SRGB;
190 bpp = RGB32_BPP;
191 break;
192 }
193 pix->bytesperline = pix->width * bpp;
194 pix->sizeimage = pix->bytesperline * pix->height;
195
196 return bpp;
197 }
198
199 /*
200 * omap_vout_uservirt_to_phys: This inline function is used to convert user
201 * space virtual address to physical address.
202 */
203 static u32 omap_vout_uservirt_to_phys(u32 virtp)
204 {
205 unsigned long physp = 0;
206 struct vm_area_struct *vma;
207 struct mm_struct *mm = current->mm;
208
209 vma = find_vma(mm, virtp);
210 /* For kernel direct-mapped memory, take the easy way */
211 if (virtp >= PAGE_OFFSET) {
212 physp = virt_to_phys((void *) virtp);
213 } else if (vma && (vma->vm_flags & VM_IO) && vma->vm_pgoff) {
214 /* this will catch, kernel-allocated, mmaped-to-usermode
215 addresses */
216 physp = (vma->vm_pgoff << PAGE_SHIFT) + (virtp - vma->vm_start);
217 } else {
218 /* otherwise, use get_user_pages() for general userland pages */
219 int res, nr_pages = 1;
220 struct page *pages;
221 down_read(&current->mm->mmap_sem);
222
223 res = get_user_pages(current, current->mm, virtp, nr_pages, 1,
224 0, &pages, NULL);
225 up_read(&current->mm->mmap_sem);
226
227 if (res == nr_pages) {
228 physp = __pa(page_address(&pages[0]) +
229 (virtp & ~PAGE_MASK));
230 } else {
231 printk(KERN_WARNING VOUT_NAME
232 "get_user_pages failed\n");
233 return 0;
234 }
235 }
236
237 return physp;
238 }
239
240 /*
241 * Free the V4L2 buffers
242 */
243 void omap_vout_free_buffers(struct omap_vout_device *vout)
244 {
245 int i, numbuffers;
246
247 /* Allocate memory for the buffers */
248 numbuffers = (vout->vid) ? video2_numbuffers : video1_numbuffers;
249 vout->buffer_size = (vout->vid) ? video2_bufsize : video1_bufsize;
250
251 for (i = 0; i < numbuffers; i++) {
252 omap_vout_free_buffer(vout->buf_virt_addr[i],
253 vout->buffer_size);
254 vout->buf_phy_addr[i] = 0;
255 vout->buf_virt_addr[i] = 0;
256 }
257 }
258
259 /*
260 * Convert V4L2 rotation to DSS rotation
261 * V4L2 understand 0, 90, 180, 270.
262 * Convert to 0, 1, 2 and 3 respectively for DSS
263 */
264 static int v4l2_rot_to_dss_rot(int v4l2_rotation,
265 enum dss_rotation *rotation, bool mirror)
266 {
267 int ret = 0;
268
269 switch (v4l2_rotation) {
270 case 90:
271 *rotation = dss_rotation_90_degree;
272 break;
273 case 180:
274 *rotation = dss_rotation_180_degree;
275 break;
276 case 270:
277 *rotation = dss_rotation_270_degree;
278 break;
279 case 0:
280 *rotation = dss_rotation_0_degree;
281 break;
282 default:
283 ret = -EINVAL;
284 }
285 return ret;
286 }
287
288 static int omap_vout_calculate_offset(struct omap_vout_device *vout)
289 {
290 struct omapvideo_info *ovid;
291 struct v4l2_rect *crop = &vout->crop;
292 struct v4l2_pix_format *pix = &vout->pix;
293 int *cropped_offset = &vout->cropped_offset;
294 int ps = 2, line_length = 0;
295
296 ovid = &vout->vid_info;
297
298 if (ovid->rotation_type == VOUT_ROT_VRFB) {
299 omap_vout_calculate_vrfb_offset(vout);
300 } else {
301 vout->line_length = line_length = pix->width;
302
303 if (V4L2_PIX_FMT_YUYV == pix->pixelformat ||
304 V4L2_PIX_FMT_UYVY == pix->pixelformat)
305 ps = 2;
306 else if (V4L2_PIX_FMT_RGB32 == pix->pixelformat)
307 ps = 4;
308 else if (V4L2_PIX_FMT_RGB24 == pix->pixelformat)
309 ps = 3;
310
311 vout->ps = ps;
312
313 *cropped_offset = (line_length * ps) *
314 crop->top + crop->left * ps;
315 }
316
317 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "%s Offset:%x\n",
318 __func__, vout->cropped_offset);
319
320 return 0;
321 }
322
323 /*
324 * Convert V4L2 pixel format to DSS pixel format
325 */
326 static int video_mode_to_dss_mode(struct omap_vout_device *vout)
327 {
328 struct omap_overlay *ovl;
329 struct omapvideo_info *ovid;
330 struct v4l2_pix_format *pix = &vout->pix;
331 enum omap_color_mode mode;
332
333 ovid = &vout->vid_info;
334 ovl = ovid->overlays[0];
335
336 switch (pix->pixelformat) {
337 case 0:
338 break;
339 case V4L2_PIX_FMT_YUYV:
340 mode = OMAP_DSS_COLOR_YUV2;
341 break;
342 case V4L2_PIX_FMT_UYVY:
343 mode = OMAP_DSS_COLOR_UYVY;
344 break;
345 case V4L2_PIX_FMT_RGB565:
346 mode = OMAP_DSS_COLOR_RGB16;
347 break;
348 case V4L2_PIX_FMT_RGB24:
349 mode = OMAP_DSS_COLOR_RGB24P;
350 break;
351 case V4L2_PIX_FMT_RGB32:
352 mode = (ovl->id == OMAP_DSS_VIDEO1) ?
353 OMAP_DSS_COLOR_RGB24U : OMAP_DSS_COLOR_ARGB32;
354 break;
355 case V4L2_PIX_FMT_BGR32:
356 mode = OMAP_DSS_COLOR_RGBX32;
357 break;
358 default:
359 mode = -EINVAL;
360 }
361 return mode;
362 }
363
364 /*
365 * Setup the overlay
366 */
367 static int omapvid_setup_overlay(struct omap_vout_device *vout,
368 struct omap_overlay *ovl, int posx, int posy, int outw,
369 int outh, u32 addr)
370 {
371 int ret = 0;
372 struct omap_overlay_info info;
373 int cropheight, cropwidth, pixheight, pixwidth;
374
375 if ((ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0 &&
376 (outw != vout->pix.width || outh != vout->pix.height)) {
377 ret = -EINVAL;
378 goto setup_ovl_err;
379 }
380
381 vout->dss_mode = video_mode_to_dss_mode(vout);
382 if (vout->dss_mode == -EINVAL) {
383 ret = -EINVAL;
384 goto setup_ovl_err;
385 }
386
387 /* Setup the input plane parameters according to
388 * rotation value selected.
389 */
390 if (is_rotation_90_or_270(vout)) {
391 cropheight = vout->crop.width;
392 cropwidth = vout->crop.height;
393 pixheight = vout->pix.width;
394 pixwidth = vout->pix.height;
395 } else {
396 cropheight = vout->crop.height;
397 cropwidth = vout->crop.width;
398 pixheight = vout->pix.height;
399 pixwidth = vout->pix.width;
400 }
401
402 ovl->get_overlay_info(ovl, &info);
403 info.paddr = addr;
404 info.width = cropwidth;
405 info.height = cropheight;
406 info.color_mode = vout->dss_mode;
407 info.mirror = vout->mirror;
408 info.pos_x = posx;
409 info.pos_y = posy;
410 info.out_width = outw;
411 info.out_height = outh;
412 info.global_alpha = vout->win.global_alpha;
413 if (!is_rotation_enabled(vout)) {
414 info.rotation = 0;
415 info.rotation_type = OMAP_DSS_ROT_DMA;
416 info.screen_width = pixwidth;
417 } else {
418 info.rotation = vout->rotation;
419 info.rotation_type = OMAP_DSS_ROT_VRFB;
420 info.screen_width = 2048;
421 }
422
423 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
424 "%s enable=%d addr=%x width=%d\n height=%d color_mode=%d\n"
425 "rotation=%d mirror=%d posx=%d posy=%d out_width = %d \n"
426 "out_height=%d rotation_type=%d screen_width=%d\n",
427 __func__, info.enabled, info.paddr, info.width, info.height,
428 info.color_mode, info.rotation, info.mirror, info.pos_x,
429 info.pos_y, info.out_width, info.out_height, info.rotation_type,
430 info.screen_width);
431
432 ret = ovl->set_overlay_info(ovl, &info);
433 if (ret)
434 goto setup_ovl_err;
435
436 return 0;
437
438 setup_ovl_err:
439 v4l2_warn(&vout->vid_dev->v4l2_dev, "setup_overlay failed\n");
440 return ret;
441 }
442
443 /*
444 * Initialize the overlay structure
445 */
446 static int omapvid_init(struct omap_vout_device *vout, u32 addr)
447 {
448 int ret = 0, i;
449 struct v4l2_window *win;
450 struct omap_overlay *ovl;
451 int posx, posy, outw, outh, temp;
452 struct omap_video_timings *timing;
453 struct omapvideo_info *ovid = &vout->vid_info;
454
455 win = &vout->win;
456 for (i = 0; i < ovid->num_overlays; i++) {
457 ovl = ovid->overlays[i];
458 if (!ovl->manager || !ovl->manager->device)
459 return -EINVAL;
460
461 timing = &ovl->manager->device->panel.timings;
462
463 outw = win->w.width;
464 outh = win->w.height;
465 switch (vout->rotation) {
466 case dss_rotation_90_degree:
467 /* Invert the height and width for 90
468 * and 270 degree rotation
469 */
470 temp = outw;
471 outw = outh;
472 outh = temp;
473 posy = (timing->y_res - win->w.width) - win->w.left;
474 posx = win->w.top;
475 break;
476
477 case dss_rotation_180_degree:
478 posx = (timing->x_res - win->w.width) - win->w.left;
479 posy = (timing->y_res - win->w.height) - win->w.top;
480 break;
481
482 case dss_rotation_270_degree:
483 temp = outw;
484 outw = outh;
485 outh = temp;
486 posy = win->w.left;
487 posx = (timing->x_res - win->w.height) - win->w.top;
488 break;
489
490 default:
491 posx = win->w.left;
492 posy = win->w.top;
493 break;
494 }
495
496 ret = omapvid_setup_overlay(vout, ovl, posx, posy,
497 outw, outh, addr);
498 if (ret)
499 goto omapvid_init_err;
500 }
501 return 0;
502
503 omapvid_init_err:
504 v4l2_warn(&vout->vid_dev->v4l2_dev, "apply_changes failed\n");
505 return ret;
506 }
507
508 /*
509 * Apply the changes set the go bit of DSS
510 */
511 static int omapvid_apply_changes(struct omap_vout_device *vout)
512 {
513 int i;
514 struct omap_overlay *ovl;
515 struct omapvideo_info *ovid = &vout->vid_info;
516
517 for (i = 0; i < ovid->num_overlays; i++) {
518 ovl = ovid->overlays[i];
519 if (!ovl->manager || !ovl->manager->device)
520 return -EINVAL;
521 ovl->manager->apply(ovl->manager);
522 }
523
524 return 0;
525 }
526
527 static int omapvid_handle_interlace_display(struct omap_vout_device *vout,
528 unsigned int irqstatus, struct timeval timevalue)
529 {
530 u32 fid;
531
532 if (vout->first_int) {
533 vout->first_int = 0;
534 goto err;
535 }
536
537 if (irqstatus & DISPC_IRQ_EVSYNC_ODD)
538 fid = 1;
539 else if (irqstatus & DISPC_IRQ_EVSYNC_EVEN)
540 fid = 0;
541 else
542 goto err;
543
544 vout->field_id ^= 1;
545 if (fid != vout->field_id) {
546 if (fid == 0)
547 vout->field_id = fid;
548 } else if (0 == fid) {
549 if (vout->cur_frm == vout->next_frm)
550 goto err;
551
552 vout->cur_frm->ts = timevalue;
553 vout->cur_frm->state = VIDEOBUF_DONE;
554 wake_up_interruptible(&vout->cur_frm->done);
555 vout->cur_frm = vout->next_frm;
556 } else {
557 if (list_empty(&vout->dma_queue) ||
558 (vout->cur_frm != vout->next_frm))
559 goto err;
560 }
561
562 return vout->field_id;
563 err:
564 return 0;
565 }
566
567 static void omap_vout_isr(void *arg, unsigned int irqstatus)
568 {
569 int ret, fid, mgr_id;
570 u32 addr, irq;
571 struct omap_overlay *ovl;
572 struct timeval timevalue;
573 struct omapvideo_info *ovid;
574 struct omap_dss_device *cur_display;
575 struct omap_vout_device *vout = (struct omap_vout_device *)arg;
576
577 if (!vout->streaming)
578 return;
579
580 ovid = &vout->vid_info;
581 ovl = ovid->overlays[0];
582 /* get the display device attached to the overlay */
583 if (!ovl->manager || !ovl->manager->device)
584 return;
585
586 mgr_id = ovl->manager->id;
587 cur_display = ovl->manager->device;
588
589 spin_lock(&vout->vbq_lock);
590 do_gettimeofday(&timevalue);
591
592 switch (cur_display->type) {
593 case OMAP_DISPLAY_TYPE_DSI:
594 case OMAP_DISPLAY_TYPE_DPI:
595 if (mgr_id == OMAP_DSS_CHANNEL_LCD)
596 irq = DISPC_IRQ_VSYNC;
597 else if (mgr_id == OMAP_DSS_CHANNEL_LCD2)
598 irq = DISPC_IRQ_VSYNC2;
599 else
600 goto vout_isr_err;
601
602 if (!(irqstatus & irq))
603 goto vout_isr_err;
604 break;
605 case OMAP_DISPLAY_TYPE_VENC:
606 fid = omapvid_handle_interlace_display(vout, irqstatus,
607 timevalue);
608 if (!fid)
609 goto vout_isr_err;
610 break;
611 case OMAP_DISPLAY_TYPE_HDMI:
612 if (!(irqstatus & DISPC_IRQ_EVSYNC_EVEN))
613 goto vout_isr_err;
614 break;
615 default:
616 goto vout_isr_err;
617 }
618
619 if (!vout->first_int && (vout->cur_frm != vout->next_frm)) {
620 vout->cur_frm->ts = timevalue;
621 vout->cur_frm->state = VIDEOBUF_DONE;
622 wake_up_interruptible(&vout->cur_frm->done);
623 vout->cur_frm = vout->next_frm;
624 }
625
626 vout->first_int = 0;
627 if (list_empty(&vout->dma_queue))
628 goto vout_isr_err;
629
630 vout->next_frm = list_entry(vout->dma_queue.next,
631 struct videobuf_buffer, queue);
632 list_del(&vout->next_frm->queue);
633
634 vout->next_frm->state = VIDEOBUF_ACTIVE;
635
636 addr = (unsigned long) vout->queued_buf_addr[vout->next_frm->i]
637 + vout->cropped_offset;
638
639 /* First save the configuration in ovelray structure */
640 ret = omapvid_init(vout, addr);
641 if (ret)
642 printk(KERN_ERR VOUT_NAME
643 "failed to set overlay info\n");
644 /* Enable the pipeline and set the Go bit */
645 ret = omapvid_apply_changes(vout);
646 if (ret)
647 printk(KERN_ERR VOUT_NAME "failed to change mode\n");
648
649 vout_isr_err:
650 spin_unlock(&vout->vbq_lock);
651 }
652
653 /* Video buffer call backs */
654
655 /*
656 * Buffer setup function is called by videobuf layer when REQBUF ioctl is
657 * called. This is used to setup buffers and return size and count of
658 * buffers allocated. After the call to this buffer, videobuf layer will
659 * setup buffer queue depending on the size and count of buffers
660 */
661 static int omap_vout_buffer_setup(struct videobuf_queue *q, unsigned int *count,
662 unsigned int *size)
663 {
664 int startindex = 0, i, j;
665 u32 phy_addr = 0, virt_addr = 0;
666 struct omap_vout_device *vout = q->priv_data;
667 struct omapvideo_info *ovid = &vout->vid_info;
668 int vid_max_buf_size;
669
670 if (!vout)
671 return -EINVAL;
672
673 vid_max_buf_size = vout->vid == OMAP_VIDEO1 ? video1_bufsize :
674 video2_bufsize;
675
676 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != q->type)
677 return -EINVAL;
678
679 startindex = (vout->vid == OMAP_VIDEO1) ?
680 video1_numbuffers : video2_numbuffers;
681 if (V4L2_MEMORY_MMAP == vout->memory && *count < startindex)
682 *count = startindex;
683
684 if (ovid->rotation_type == VOUT_ROT_VRFB) {
685 if (omap_vout_vrfb_buffer_setup(vout, count, startindex))
686 return -ENOMEM;
687 }
688
689 if (V4L2_MEMORY_MMAP != vout->memory)
690 return 0;
691
692 /* Now allocated the V4L2 buffers */
693 *size = PAGE_ALIGN(vout->pix.width * vout->pix.height * vout->bpp);
694 startindex = (vout->vid == OMAP_VIDEO1) ?
695 video1_numbuffers : video2_numbuffers;
696
697 /* Check the size of the buffer */
698 if (*size > vid_max_buf_size) {
699 v4l2_err(&vout->vid_dev->v4l2_dev,
700 "buffer allocation mismatch [%u] [%u]\n",
701 *size, vout->buffer_size);
702 return -ENOMEM;
703 }
704
705 for (i = startindex; i < *count; i++) {
706 vout->buffer_size = *size;
707
708 virt_addr = omap_vout_alloc_buffer(vout->buffer_size,
709 &phy_addr);
710 if (!virt_addr) {
711 if (ovid->rotation_type == VOUT_ROT_NONE) {
712 break;
713 } else {
714 if (!is_rotation_enabled(vout))
715 break;
716 /* Free the VRFB buffers if no space for V4L2 buffers */
717 for (j = i; j < *count; j++) {
718 omap_vout_free_buffer(
719 vout->smsshado_virt_addr[j],
720 vout->smsshado_size);
721 vout->smsshado_virt_addr[j] = 0;
722 vout->smsshado_phy_addr[j] = 0;
723 }
724 }
725 }
726 vout->buf_virt_addr[i] = virt_addr;
727 vout->buf_phy_addr[i] = phy_addr;
728 }
729 *count = vout->buffer_allocated = i;
730
731 return 0;
732 }
733
734 /*
735 * Free the V4L2 buffers additionally allocated than default
736 * number of buffers
737 */
738 static void omap_vout_free_extra_buffers(struct omap_vout_device *vout)
739 {
740 int num_buffers = 0, i;
741
742 num_buffers = (vout->vid == OMAP_VIDEO1) ?
743 video1_numbuffers : video2_numbuffers;
744
745 for (i = num_buffers; i < vout->buffer_allocated; i++) {
746 if (vout->buf_virt_addr[i])
747 omap_vout_free_buffer(vout->buf_virt_addr[i],
748 vout->buffer_size);
749
750 vout->buf_virt_addr[i] = 0;
751 vout->buf_phy_addr[i] = 0;
752 }
753 vout->buffer_allocated = num_buffers;
754 }
755
756 /*
757 * This function will be called when VIDIOC_QBUF ioctl is called.
758 * It prepare buffers before give out for the display. This function
759 * converts user space virtual address into physical address if userptr memory
760 * exchange mechanism is used. If rotation is enabled, it copies entire
761 * buffer into VRFB memory space before giving it to the DSS.
762 */
763 static int omap_vout_buffer_prepare(struct videobuf_queue *q,
764 struct videobuf_buffer *vb,
765 enum v4l2_field field)
766 {
767 struct omap_vout_device *vout = q->priv_data;
768 struct omapvideo_info *ovid = &vout->vid_info;
769
770 if (VIDEOBUF_NEEDS_INIT == vb->state) {
771 vb->width = vout->pix.width;
772 vb->height = vout->pix.height;
773 vb->size = vb->width * vb->height * vout->bpp;
774 vb->field = field;
775 }
776 vb->state = VIDEOBUF_PREPARED;
777 /* if user pointer memory mechanism is used, get the physical
778 * address of the buffer
779 */
780 if (V4L2_MEMORY_USERPTR == vb->memory) {
781 if (0 == vb->baddr)
782 return -EINVAL;
783 /* Physical address */
784 vout->queued_buf_addr[vb->i] = (u8 *)
785 omap_vout_uservirt_to_phys(vb->baddr);
786 } else {
787 u32 addr, dma_addr;
788 unsigned long size;
789
790 addr = (unsigned long) vout->buf_virt_addr[vb->i];
791 size = (unsigned long) vb->size;
792
793 dma_addr = dma_map_single(vout->vid_dev->v4l2_dev.dev, (void *) addr,
794 size, DMA_TO_DEVICE);
795 if (dma_mapping_error(vout->vid_dev->v4l2_dev.dev, dma_addr))
796 v4l2_err(&vout->vid_dev->v4l2_dev, "dma_map_single failed\n");
797
798 vout->queued_buf_addr[vb->i] = (u8 *)vout->buf_phy_addr[vb->i];
799 }
800
801 if (ovid->rotation_type == VOUT_ROT_VRFB)
802 return omap_vout_prepare_vrfb(vout, vb);
803 else
804 return 0;
805 }
806
807 /*
808 * Buffer queue function will be called from the videobuf layer when _QBUF
809 * ioctl is called. It is used to enqueue buffer, which is ready to be
810 * displayed.
811 */
812 static void omap_vout_buffer_queue(struct videobuf_queue *q,
813 struct videobuf_buffer *vb)
814 {
815 struct omap_vout_device *vout = q->priv_data;
816
817 /* Driver is also maintainig a queue. So enqueue buffer in the driver
818 * queue */
819 list_add_tail(&vb->queue, &vout->dma_queue);
820
821 vb->state = VIDEOBUF_QUEUED;
822 }
823
824 /*
825 * Buffer release function is called from videobuf layer to release buffer
826 * which are already allocated
827 */
828 static void omap_vout_buffer_release(struct videobuf_queue *q,
829 struct videobuf_buffer *vb)
830 {
831 struct omap_vout_device *vout = q->priv_data;
832
833 vb->state = VIDEOBUF_NEEDS_INIT;
834
835 if (V4L2_MEMORY_MMAP != vout->memory)
836 return;
837 }
838
839 /*
840 * File operations
841 */
842 static unsigned int omap_vout_poll(struct file *file,
843 struct poll_table_struct *wait)
844 {
845 struct omap_vout_device *vout = file->private_data;
846 struct videobuf_queue *q = &vout->vbq;
847
848 return videobuf_poll_stream(file, q, wait);
849 }
850
851 static void omap_vout_vm_open(struct vm_area_struct *vma)
852 {
853 struct omap_vout_device *vout = vma->vm_private_data;
854
855 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
856 "vm_open [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
857 vout->mmap_count++;
858 }
859
860 static void omap_vout_vm_close(struct vm_area_struct *vma)
861 {
862 struct omap_vout_device *vout = vma->vm_private_data;
863
864 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
865 "vm_close [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
866 vout->mmap_count--;
867 }
868
869 static struct vm_operations_struct omap_vout_vm_ops = {
870 .open = omap_vout_vm_open,
871 .close = omap_vout_vm_close,
872 };
873
874 static int omap_vout_mmap(struct file *file, struct vm_area_struct *vma)
875 {
876 int i;
877 void *pos;
878 unsigned long start = vma->vm_start;
879 unsigned long size = (vma->vm_end - vma->vm_start);
880 struct omap_vout_device *vout = file->private_data;
881 struct videobuf_queue *q = &vout->vbq;
882
883 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
884 " %s pgoff=0x%lx, start=0x%lx, end=0x%lx\n", __func__,
885 vma->vm_pgoff, vma->vm_start, vma->vm_end);
886
887 /* look for the buffer to map */
888 for (i = 0; i < VIDEO_MAX_FRAME; i++) {
889 if (NULL == q->bufs[i])
890 continue;
891 if (V4L2_MEMORY_MMAP != q->bufs[i]->memory)
892 continue;
893 if (q->bufs[i]->boff == (vma->vm_pgoff << PAGE_SHIFT))
894 break;
895 }
896
897 if (VIDEO_MAX_FRAME == i) {
898 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
899 "offset invalid [offset=0x%lx]\n",
900 (vma->vm_pgoff << PAGE_SHIFT));
901 return -EINVAL;
902 }
903 /* Check the size of the buffer */
904 if (size > vout->buffer_size) {
905 v4l2_err(&vout->vid_dev->v4l2_dev,
906 "insufficient memory [%lu] [%u]\n",
907 size, vout->buffer_size);
908 return -ENOMEM;
909 }
910
911 q->bufs[i]->baddr = vma->vm_start;
912
913 vma->vm_flags |= VM_RESERVED;
914 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
915 vma->vm_ops = &omap_vout_vm_ops;
916 vma->vm_private_data = (void *) vout;
917 pos = (void *)vout->buf_virt_addr[i];
918 vma->vm_pgoff = virt_to_phys((void *)pos) >> PAGE_SHIFT;
919 while (size > 0) {
920 unsigned long pfn;
921 pfn = virt_to_phys((void *) pos) >> PAGE_SHIFT;
922 if (remap_pfn_range(vma, start, pfn, PAGE_SIZE, PAGE_SHARED))
923 return -EAGAIN;
924 start += PAGE_SIZE;
925 pos += PAGE_SIZE;
926 size -= PAGE_SIZE;
927 }
928 vout->mmap_count++;
929 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
930
931 return 0;
932 }
933
934 static int omap_vout_release(struct file *file)
935 {
936 unsigned int ret, i;
937 struct videobuf_queue *q;
938 struct omapvideo_info *ovid;
939 struct omap_vout_device *vout = file->private_data;
940
941 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
942 ovid = &vout->vid_info;
943
944 if (!vout)
945 return 0;
946
947 q = &vout->vbq;
948 /* Disable all the overlay managers connected with this interface */
949 for (i = 0; i < ovid->num_overlays; i++) {
950 struct omap_overlay *ovl = ovid->overlays[i];
951 if (ovl->manager && ovl->manager->device) {
952 struct omap_overlay_info info;
953 ovl->get_overlay_info(ovl, &info);
954 info.enabled = 0;
955 ovl->set_overlay_info(ovl, &info);
956 }
957 }
958 /* Turn off the pipeline */
959 ret = omapvid_apply_changes(vout);
960 if (ret)
961 v4l2_warn(&vout->vid_dev->v4l2_dev,
962 "Unable to apply changes\n");
963
964 /* Free all buffers */
965 omap_vout_free_extra_buffers(vout);
966
967 /* Free the VRFB buffers only if they are allocated
968 * during reqbufs. Don't free if init time allocated
969 */
970 if (ovid->rotation_type == VOUT_ROT_VRFB) {
971 if (!vout->vrfb_static_allocation)
972 omap_vout_free_vrfb_buffers(vout);
973 }
974 videobuf_mmap_free(q);
975
976 /* Even if apply changes fails we should continue
977 freeing allocated memory */
978 if (vout->streaming) {
979 u32 mask = 0;
980
981 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN |
982 DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_VSYNC2;
983 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
984 vout->streaming = 0;
985
986 videobuf_streamoff(q);
987 videobuf_queue_cancel(q);
988 }
989
990 if (vout->mmap_count != 0)
991 vout->mmap_count = 0;
992
993 vout->opened -= 1;
994 file->private_data = NULL;
995
996 if (vout->buffer_allocated)
997 videobuf_mmap_free(q);
998
999 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1000 return ret;
1001 }
1002
1003 static int omap_vout_open(struct file *file)
1004 {
1005 struct videobuf_queue *q;
1006 struct omap_vout_device *vout = NULL;
1007
1008 vout = video_drvdata(file);
1009 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
1010
1011 if (vout == NULL)
1012 return -ENODEV;
1013
1014 /* for now, we only support single open */
1015 if (vout->opened)
1016 return -EBUSY;
1017
1018 vout->opened += 1;
1019
1020 file->private_data = vout;
1021 vout->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1022
1023 q = &vout->vbq;
1024 video_vbq_ops.buf_setup = omap_vout_buffer_setup;
1025 video_vbq_ops.buf_prepare = omap_vout_buffer_prepare;
1026 video_vbq_ops.buf_release = omap_vout_buffer_release;
1027 video_vbq_ops.buf_queue = omap_vout_buffer_queue;
1028 spin_lock_init(&vout->vbq_lock);
1029
1030 videobuf_queue_dma_contig_init(q, &video_vbq_ops, q->dev,
1031 &vout->vbq_lock, vout->type, V4L2_FIELD_NONE,
1032 sizeof(struct videobuf_buffer), vout, NULL);
1033
1034 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1035 return 0;
1036 }
1037
1038 /*
1039 * V4L2 ioctls
1040 */
1041 static int vidioc_querycap(struct file *file, void *fh,
1042 struct v4l2_capability *cap)
1043 {
1044 struct omap_vout_device *vout = fh;
1045
1046 strlcpy(cap->driver, VOUT_NAME, sizeof(cap->driver));
1047 strlcpy(cap->card, vout->vfd->name, sizeof(cap->card));
1048 cap->bus_info[0] = '\0';
1049 cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_OUTPUT |
1050 V4L2_CAP_VIDEO_OUTPUT_OVERLAY;
1051
1052 return 0;
1053 }
1054
1055 static int vidioc_enum_fmt_vid_out(struct file *file, void *fh,
1056 struct v4l2_fmtdesc *fmt)
1057 {
1058 int index = fmt->index;
1059
1060 if (index >= NUM_OUTPUT_FORMATS)
1061 return -EINVAL;
1062
1063 fmt->flags = omap_formats[index].flags;
1064 strlcpy(fmt->description, omap_formats[index].description,
1065 sizeof(fmt->description));
1066 fmt->pixelformat = omap_formats[index].pixelformat;
1067
1068 return 0;
1069 }
1070
1071 static int vidioc_g_fmt_vid_out(struct file *file, void *fh,
1072 struct v4l2_format *f)
1073 {
1074 struct omap_vout_device *vout = fh;
1075
1076 f->fmt.pix = vout->pix;
1077 return 0;
1078
1079 }
1080
1081 static int vidioc_try_fmt_vid_out(struct file *file, void *fh,
1082 struct v4l2_format *f)
1083 {
1084 struct omap_overlay *ovl;
1085 struct omapvideo_info *ovid;
1086 struct omap_video_timings *timing;
1087 struct omap_vout_device *vout = fh;
1088
1089 ovid = &vout->vid_info;
1090 ovl = ovid->overlays[0];
1091
1092 if (!ovl->manager || !ovl->manager->device)
1093 return -EINVAL;
1094 /* get the display device attached to the overlay */
1095 timing = &ovl->manager->device->panel.timings;
1096
1097 vout->fbuf.fmt.height = timing->y_res;
1098 vout->fbuf.fmt.width = timing->x_res;
1099
1100 omap_vout_try_format(&f->fmt.pix);
1101 return 0;
1102 }
1103
1104 static int vidioc_s_fmt_vid_out(struct file *file, void *fh,
1105 struct v4l2_format *f)
1106 {
1107 int ret, bpp;
1108 struct omap_overlay *ovl;
1109 struct omapvideo_info *ovid;
1110 struct omap_video_timings *timing;
1111 struct omap_vout_device *vout = fh;
1112
1113 if (vout->streaming)
1114 return -EBUSY;
1115
1116 mutex_lock(&vout->lock);
1117
1118 ovid = &vout->vid_info;
1119 ovl = ovid->overlays[0];
1120
1121 /* get the display device attached to the overlay */
1122 if (!ovl->manager || !ovl->manager->device) {
1123 ret = -EINVAL;
1124 goto s_fmt_vid_out_exit;
1125 }
1126 timing = &ovl->manager->device->panel.timings;
1127
1128 /* We dont support RGB24-packed mode if vrfb rotation
1129 * is enabled*/
1130 if ((is_rotation_enabled(vout)) &&
1131 f->fmt.pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1132 ret = -EINVAL;
1133 goto s_fmt_vid_out_exit;
1134 }
1135
1136 /* get the framebuffer parameters */
1137
1138 if (is_rotation_90_or_270(vout)) {
1139 vout->fbuf.fmt.height = timing->x_res;
1140 vout->fbuf.fmt.width = timing->y_res;
1141 } else {
1142 vout->fbuf.fmt.height = timing->y_res;
1143 vout->fbuf.fmt.width = timing->x_res;
1144 }
1145
1146 /* change to samller size is OK */
1147
1148 bpp = omap_vout_try_format(&f->fmt.pix);
1149 f->fmt.pix.sizeimage = f->fmt.pix.width * f->fmt.pix.height * bpp;
1150
1151 /* try & set the new output format */
1152 vout->bpp = bpp;
1153 vout->pix = f->fmt.pix;
1154 vout->vrfb_bpp = 1;
1155
1156 /* If YUYV then vrfb bpp is 2, for others its 1 */
1157 if (V4L2_PIX_FMT_YUYV == vout->pix.pixelformat ||
1158 V4L2_PIX_FMT_UYVY == vout->pix.pixelformat)
1159 vout->vrfb_bpp = 2;
1160
1161 /* set default crop and win */
1162 omap_vout_new_format(&vout->pix, &vout->fbuf, &vout->crop, &vout->win);
1163
1164 /* Save the changes in the overlay strcuture */
1165 ret = omapvid_init(vout, 0);
1166 if (ret) {
1167 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1168 goto s_fmt_vid_out_exit;
1169 }
1170
1171 ret = 0;
1172
1173 s_fmt_vid_out_exit:
1174 mutex_unlock(&vout->lock);
1175 return ret;
1176 }
1177
1178 static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh,
1179 struct v4l2_format *f)
1180 {
1181 int ret = 0;
1182 struct omap_vout_device *vout = fh;
1183 struct omap_overlay *ovl;
1184 struct omapvideo_info *ovid;
1185 struct v4l2_window *win = &f->fmt.win;
1186
1187 ovid = &vout->vid_info;
1188 ovl = ovid->overlays[0];
1189
1190 ret = omap_vout_try_window(&vout->fbuf, win);
1191
1192 if (!ret) {
1193 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1194 win->global_alpha = 255;
1195 else
1196 win->global_alpha = f->fmt.win.global_alpha;
1197 }
1198
1199 return ret;
1200 }
1201
1202 static int vidioc_s_fmt_vid_overlay(struct file *file, void *fh,
1203 struct v4l2_format *f)
1204 {
1205 int ret = 0;
1206 struct omap_overlay *ovl;
1207 struct omapvideo_info *ovid;
1208 struct omap_vout_device *vout = fh;
1209 struct v4l2_window *win = &f->fmt.win;
1210
1211 mutex_lock(&vout->lock);
1212 ovid = &vout->vid_info;
1213 ovl = ovid->overlays[0];
1214
1215 ret = omap_vout_new_window(&vout->crop, &vout->win, &vout->fbuf, win);
1216 if (!ret) {
1217 /* Video1 plane does not support global alpha on OMAP3 */
1218 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1219 vout->win.global_alpha = 255;
1220 else
1221 vout->win.global_alpha = f->fmt.win.global_alpha;
1222
1223 vout->win.chromakey = f->fmt.win.chromakey;
1224 }
1225 mutex_unlock(&vout->lock);
1226 return ret;
1227 }
1228
1229 static int vidioc_enum_fmt_vid_overlay(struct file *file, void *fh,
1230 struct v4l2_fmtdesc *fmt)
1231 {
1232 int index = fmt->index;
1233
1234 if (index >= NUM_OUTPUT_FORMATS)
1235 return -EINVAL;
1236
1237 fmt->flags = omap_formats[index].flags;
1238 strlcpy(fmt->description, omap_formats[index].description,
1239 sizeof(fmt->description));
1240 fmt->pixelformat = omap_formats[index].pixelformat;
1241 return 0;
1242 }
1243
1244 static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh,
1245 struct v4l2_format *f)
1246 {
1247 u32 key_value = 0;
1248 struct omap_overlay *ovl;
1249 struct omapvideo_info *ovid;
1250 struct omap_vout_device *vout = fh;
1251 struct omap_overlay_manager_info info;
1252 struct v4l2_window *win = &f->fmt.win;
1253
1254 ovid = &vout->vid_info;
1255 ovl = ovid->overlays[0];
1256
1257 win->w = vout->win.w;
1258 win->field = vout->win.field;
1259 win->global_alpha = vout->win.global_alpha;
1260
1261 if (ovl->manager && ovl->manager->get_manager_info) {
1262 ovl->manager->get_manager_info(ovl->manager, &info);
1263 key_value = info.trans_key;
1264 }
1265 win->chromakey = key_value;
1266 return 0;
1267 }
1268
1269 static int vidioc_cropcap(struct file *file, void *fh,
1270 struct v4l2_cropcap *cropcap)
1271 {
1272 struct omap_vout_device *vout = fh;
1273 struct v4l2_pix_format *pix = &vout->pix;
1274
1275 if (cropcap->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1276 return -EINVAL;
1277
1278 /* Width and height are always even */
1279 cropcap->bounds.width = pix->width & ~1;
1280 cropcap->bounds.height = pix->height & ~1;
1281
1282 omap_vout_default_crop(&vout->pix, &vout->fbuf, &cropcap->defrect);
1283 cropcap->pixelaspect.numerator = 1;
1284 cropcap->pixelaspect.denominator = 1;
1285 return 0;
1286 }
1287
1288 static int vidioc_g_crop(struct file *file, void *fh, struct v4l2_crop *crop)
1289 {
1290 struct omap_vout_device *vout = fh;
1291
1292 if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1293 return -EINVAL;
1294 crop->c = vout->crop;
1295 return 0;
1296 }
1297
1298 static int vidioc_s_crop(struct file *file, void *fh, struct v4l2_crop *crop)
1299 {
1300 int ret = -EINVAL;
1301 struct omap_vout_device *vout = fh;
1302 struct omapvideo_info *ovid;
1303 struct omap_overlay *ovl;
1304 struct omap_video_timings *timing;
1305
1306 if (vout->streaming)
1307 return -EBUSY;
1308
1309 mutex_lock(&vout->lock);
1310 ovid = &vout->vid_info;
1311 ovl = ovid->overlays[0];
1312
1313 if (!ovl->manager || !ovl->manager->device) {
1314 ret = -EINVAL;
1315 goto s_crop_err;
1316 }
1317 /* get the display device attached to the overlay */
1318 timing = &ovl->manager->device->panel.timings;
1319
1320 if (is_rotation_90_or_270(vout)) {
1321 vout->fbuf.fmt.height = timing->x_res;
1322 vout->fbuf.fmt.width = timing->y_res;
1323 } else {
1324 vout->fbuf.fmt.height = timing->y_res;
1325 vout->fbuf.fmt.width = timing->x_res;
1326 }
1327
1328 if (crop->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1329 ret = omap_vout_new_crop(&vout->pix, &vout->crop, &vout->win,
1330 &vout->fbuf, &crop->c);
1331
1332 s_crop_err:
1333 mutex_unlock(&vout->lock);
1334 return ret;
1335 }
1336
1337 static int vidioc_queryctrl(struct file *file, void *fh,
1338 struct v4l2_queryctrl *ctrl)
1339 {
1340 int ret = 0;
1341
1342 switch (ctrl->id) {
1343 case V4L2_CID_ROTATE:
1344 ret = v4l2_ctrl_query_fill(ctrl, 0, 270, 90, 0);
1345 break;
1346 case V4L2_CID_BG_COLOR:
1347 ret = v4l2_ctrl_query_fill(ctrl, 0, 0xFFFFFF, 1, 0);
1348 break;
1349 case V4L2_CID_VFLIP:
1350 ret = v4l2_ctrl_query_fill(ctrl, 0, 1, 1, 0);
1351 break;
1352 default:
1353 ctrl->name[0] = '\0';
1354 ret = -EINVAL;
1355 }
1356 return ret;
1357 }
1358
1359 static int vidioc_g_ctrl(struct file *file, void *fh, struct v4l2_control *ctrl)
1360 {
1361 int ret = 0;
1362 struct omap_vout_device *vout = fh;
1363
1364 switch (ctrl->id) {
1365 case V4L2_CID_ROTATE:
1366 ctrl->value = vout->control[0].value;
1367 break;
1368 case V4L2_CID_BG_COLOR:
1369 {
1370 struct omap_overlay_manager_info info;
1371 struct omap_overlay *ovl;
1372
1373 ovl = vout->vid_info.overlays[0];
1374 if (!ovl->manager || !ovl->manager->get_manager_info) {
1375 ret = -EINVAL;
1376 break;
1377 }
1378
1379 ovl->manager->get_manager_info(ovl->manager, &info);
1380 ctrl->value = info.default_color;
1381 break;
1382 }
1383 case V4L2_CID_VFLIP:
1384 ctrl->value = vout->control[2].value;
1385 break;
1386 default:
1387 ret = -EINVAL;
1388 }
1389 return ret;
1390 }
1391
1392 static int vidioc_s_ctrl(struct file *file, void *fh, struct v4l2_control *a)
1393 {
1394 int ret = 0;
1395 struct omap_vout_device *vout = fh;
1396
1397 switch (a->id) {
1398 case V4L2_CID_ROTATE:
1399 {
1400 struct omapvideo_info *ovid;
1401 int rotation = a->value;
1402
1403 ovid = &vout->vid_info;
1404
1405 mutex_lock(&vout->lock);
1406 if (rotation && ovid->rotation_type == VOUT_ROT_NONE) {
1407 mutex_unlock(&vout->lock);
1408 ret = -ERANGE;
1409 break;
1410 }
1411
1412 if (rotation && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1413 mutex_unlock(&vout->lock);
1414 ret = -EINVAL;
1415 break;
1416 }
1417
1418 if (v4l2_rot_to_dss_rot(rotation, &vout->rotation,
1419 vout->mirror)) {
1420 mutex_unlock(&vout->lock);
1421 ret = -EINVAL;
1422 break;
1423 }
1424
1425 vout->control[0].value = rotation;
1426 mutex_unlock(&vout->lock);
1427 break;
1428 }
1429 case V4L2_CID_BG_COLOR:
1430 {
1431 struct omap_overlay *ovl;
1432 unsigned int color = a->value;
1433 struct omap_overlay_manager_info info;
1434
1435 ovl = vout->vid_info.overlays[0];
1436
1437 mutex_lock(&vout->lock);
1438 if (!ovl->manager || !ovl->manager->get_manager_info) {
1439 mutex_unlock(&vout->lock);
1440 ret = -EINVAL;
1441 break;
1442 }
1443
1444 ovl->manager->get_manager_info(ovl->manager, &info);
1445 info.default_color = color;
1446 if (ovl->manager->set_manager_info(ovl->manager, &info)) {
1447 mutex_unlock(&vout->lock);
1448 ret = -EINVAL;
1449 break;
1450 }
1451
1452 vout->control[1].value = color;
1453 mutex_unlock(&vout->lock);
1454 break;
1455 }
1456 case V4L2_CID_VFLIP:
1457 {
1458 struct omap_overlay *ovl;
1459 struct omapvideo_info *ovid;
1460 unsigned int mirror = a->value;
1461
1462 ovid = &vout->vid_info;
1463 ovl = ovid->overlays[0];
1464
1465 mutex_lock(&vout->lock);
1466 if (mirror && ovid->rotation_type == VOUT_ROT_NONE) {
1467 mutex_unlock(&vout->lock);
1468 ret = -ERANGE;
1469 break;
1470 }
1471
1472 if (mirror && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1473 mutex_unlock(&vout->lock);
1474 ret = -EINVAL;
1475 break;
1476 }
1477 vout->mirror = mirror;
1478 vout->control[2].value = mirror;
1479 mutex_unlock(&vout->lock);
1480 break;
1481 }
1482 default:
1483 ret = -EINVAL;
1484 }
1485 return ret;
1486 }
1487
1488 static int vidioc_reqbufs(struct file *file, void *fh,
1489 struct v4l2_requestbuffers *req)
1490 {
1491 int ret = 0;
1492 unsigned int i, num_buffers = 0;
1493 struct omap_vout_device *vout = fh;
1494 struct videobuf_queue *q = &vout->vbq;
1495
1496 if ((req->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) || (req->count < 0))
1497 return -EINVAL;
1498 /* if memory is not mmp or userptr
1499 return error */
1500 if ((V4L2_MEMORY_MMAP != req->memory) &&
1501 (V4L2_MEMORY_USERPTR != req->memory))
1502 return -EINVAL;
1503
1504 mutex_lock(&vout->lock);
1505 /* Cannot be requested when streaming is on */
1506 if (vout->streaming) {
1507 ret = -EBUSY;
1508 goto reqbuf_err;
1509 }
1510
1511 /* If buffers are already allocated free them */
1512 if (q->bufs[0] && (V4L2_MEMORY_MMAP == q->bufs[0]->memory)) {
1513 if (vout->mmap_count) {
1514 ret = -EBUSY;
1515 goto reqbuf_err;
1516 }
1517 num_buffers = (vout->vid == OMAP_VIDEO1) ?
1518 video1_numbuffers : video2_numbuffers;
1519 for (i = num_buffers; i < vout->buffer_allocated; i++) {
1520 omap_vout_free_buffer(vout->buf_virt_addr[i],
1521 vout->buffer_size);
1522 vout->buf_virt_addr[i] = 0;
1523 vout->buf_phy_addr[i] = 0;
1524 }
1525 vout->buffer_allocated = num_buffers;
1526 videobuf_mmap_free(q);
1527 } else if (q->bufs[0] && (V4L2_MEMORY_USERPTR == q->bufs[0]->memory)) {
1528 if (vout->buffer_allocated) {
1529 videobuf_mmap_free(q);
1530 for (i = 0; i < vout->buffer_allocated; i++) {
1531 kfree(q->bufs[i]);
1532 q->bufs[i] = NULL;
1533 }
1534 vout->buffer_allocated = 0;
1535 }
1536 }
1537
1538 /*store the memory type in data structure */
1539 vout->memory = req->memory;
1540
1541 INIT_LIST_HEAD(&vout->dma_queue);
1542
1543 /* call videobuf_reqbufs api */
1544 ret = videobuf_reqbufs(q, req);
1545 if (ret < 0)
1546 goto reqbuf_err;
1547
1548 vout->buffer_allocated = req->count;
1549
1550 reqbuf_err:
1551 mutex_unlock(&vout->lock);
1552 return ret;
1553 }
1554
1555 static int vidioc_querybuf(struct file *file, void *fh,
1556 struct v4l2_buffer *b)
1557 {
1558 struct omap_vout_device *vout = fh;
1559
1560 return videobuf_querybuf(&vout->vbq, b);
1561 }
1562
1563 static int vidioc_qbuf(struct file *file, void *fh,
1564 struct v4l2_buffer *buffer)
1565 {
1566 struct omap_vout_device *vout = fh;
1567 struct videobuf_queue *q = &vout->vbq;
1568
1569 if ((V4L2_BUF_TYPE_VIDEO_OUTPUT != buffer->type) ||
1570 (buffer->index >= vout->buffer_allocated) ||
1571 (q->bufs[buffer->index]->memory != buffer->memory)) {
1572 return -EINVAL;
1573 }
1574 if (V4L2_MEMORY_USERPTR == buffer->memory) {
1575 if ((buffer->length < vout->pix.sizeimage) ||
1576 (0 == buffer->m.userptr)) {
1577 return -EINVAL;
1578 }
1579 }
1580
1581 if ((is_rotation_enabled(vout)) &&
1582 vout->vrfb_dma_tx.req_status == DMA_CHAN_NOT_ALLOTED) {
1583 v4l2_warn(&vout->vid_dev->v4l2_dev,
1584 "DMA Channel not allocated for Rotation\n");
1585 return -EINVAL;
1586 }
1587
1588 return videobuf_qbuf(q, buffer);
1589 }
1590
1591 static int vidioc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *b)
1592 {
1593 struct omap_vout_device *vout = fh;
1594 struct videobuf_queue *q = &vout->vbq;
1595
1596 int ret;
1597 u32 addr;
1598 unsigned long size;
1599 struct videobuf_buffer *vb;
1600
1601 vb = q->bufs[b->index];
1602
1603 if (!vout->streaming)
1604 return -EINVAL;
1605
1606 if (file->f_flags & O_NONBLOCK)
1607 /* Call videobuf_dqbuf for non blocking mode */
1608 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 1);
1609 else
1610 /* Call videobuf_dqbuf for blocking mode */
1611 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 0);
1612
1613 addr = (unsigned long) vout->buf_phy_addr[vb->i];
1614 size = (unsigned long) vb->size;
1615 dma_unmap_single(vout->vid_dev->v4l2_dev.dev, addr,
1616 size, DMA_TO_DEVICE);
1617 return ret;
1618 }
1619
1620 static int vidioc_streamon(struct file *file, void *fh, enum v4l2_buf_type i)
1621 {
1622 int ret = 0, j;
1623 u32 addr = 0, mask = 0;
1624 struct omap_vout_device *vout = fh;
1625 struct videobuf_queue *q = &vout->vbq;
1626 struct omapvideo_info *ovid = &vout->vid_info;
1627
1628 mutex_lock(&vout->lock);
1629
1630 if (vout->streaming) {
1631 ret = -EBUSY;
1632 goto streamon_err;
1633 }
1634
1635 ret = videobuf_streamon(q);
1636 if (ret)
1637 goto streamon_err;
1638
1639 if (list_empty(&vout->dma_queue)) {
1640 ret = -EIO;
1641 goto streamon_err1;
1642 }
1643
1644 /* Get the next frame from the buffer queue */
1645 vout->next_frm = vout->cur_frm = list_entry(vout->dma_queue.next,
1646 struct videobuf_buffer, queue);
1647 /* Remove buffer from the buffer queue */
1648 list_del(&vout->cur_frm->queue);
1649 /* Mark state of the current frame to active */
1650 vout->cur_frm->state = VIDEOBUF_ACTIVE;
1651 /* Initialize field_id and started member */
1652 vout->field_id = 0;
1653
1654 /* set flag here. Next QBUF will start DMA */
1655 vout->streaming = 1;
1656
1657 vout->first_int = 1;
1658
1659 if (omap_vout_calculate_offset(vout)) {
1660 ret = -EINVAL;
1661 goto streamon_err1;
1662 }
1663 addr = (unsigned long) vout->queued_buf_addr[vout->cur_frm->i]
1664 + vout->cropped_offset;
1665
1666 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1667 | DISPC_IRQ_VSYNC2;
1668
1669 omap_dispc_register_isr(omap_vout_isr, vout, mask);
1670
1671 for (j = 0; j < ovid->num_overlays; j++) {
1672 struct omap_overlay *ovl = ovid->overlays[j];
1673
1674 if (ovl->manager && ovl->manager->device) {
1675 struct omap_overlay_info info;
1676 ovl->get_overlay_info(ovl, &info);
1677 info.enabled = 1;
1678 info.paddr = addr;
1679 if (ovl->set_overlay_info(ovl, &info)) {
1680 ret = -EINVAL;
1681 goto streamon_err1;
1682 }
1683 }
1684 }
1685
1686 /* First save the configuration in ovelray structure */
1687 ret = omapvid_init(vout, addr);
1688 if (ret)
1689 v4l2_err(&vout->vid_dev->v4l2_dev,
1690 "failed to set overlay info\n");
1691 /* Enable the pipeline and set the Go bit */
1692 ret = omapvid_apply_changes(vout);
1693 if (ret)
1694 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1695
1696 ret = 0;
1697
1698 streamon_err1:
1699 if (ret)
1700 ret = videobuf_streamoff(q);
1701 streamon_err:
1702 mutex_unlock(&vout->lock);
1703 return ret;
1704 }
1705
1706 static int vidioc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i)
1707 {
1708 u32 mask = 0;
1709 int ret = 0, j;
1710 struct omap_vout_device *vout = fh;
1711 struct omapvideo_info *ovid = &vout->vid_info;
1712
1713 if (!vout->streaming)
1714 return -EINVAL;
1715
1716 vout->streaming = 0;
1717 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1718 | DISPC_IRQ_VSYNC2;
1719
1720 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
1721
1722 for (j = 0; j < ovid->num_overlays; j++) {
1723 struct omap_overlay *ovl = ovid->overlays[j];
1724
1725 if (ovl->manager && ovl->manager->device) {
1726 struct omap_overlay_info info;
1727
1728 ovl->get_overlay_info(ovl, &info);
1729 info.enabled = 0;
1730 ret = ovl->set_overlay_info(ovl, &info);
1731 if (ret)
1732 v4l2_err(&vout->vid_dev->v4l2_dev,
1733 "failed to update overlay info in streamoff\n");
1734 }
1735 }
1736
1737 /* Turn of the pipeline */
1738 ret = omapvid_apply_changes(vout);
1739 if (ret)
1740 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode in"
1741 " streamoff\n");
1742
1743 INIT_LIST_HEAD(&vout->dma_queue);
1744 ret = videobuf_streamoff(&vout->vbq);
1745
1746 return ret;
1747 }
1748
1749 static int vidioc_s_fbuf(struct file *file, void *fh,
1750 struct v4l2_framebuffer *a)
1751 {
1752 int enable = 0;
1753 struct omap_overlay *ovl;
1754 struct omapvideo_info *ovid;
1755 struct omap_vout_device *vout = fh;
1756 struct omap_overlay_manager_info info;
1757 enum omap_dss_trans_key_type key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1758
1759 ovid = &vout->vid_info;
1760 ovl = ovid->overlays[0];
1761
1762 /* OMAP DSS doesn't support Source and Destination color
1763 key together */
1764 if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY) &&
1765 (a->flags & V4L2_FBUF_FLAG_CHROMAKEY))
1766 return -EINVAL;
1767 /* OMAP DSS Doesn't support the Destination color key
1768 and alpha blending together */
1769 if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY) &&
1770 (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA))
1771 return -EINVAL;
1772
1773 if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY)) {
1774 vout->fbuf.flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1775 key_type = OMAP_DSS_COLOR_KEY_VID_SRC;
1776 } else
1777 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1778
1779 if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY)) {
1780 vout->fbuf.flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1781 key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1782 } else
1783 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_CHROMAKEY;
1784
1785 if (a->flags & (V4L2_FBUF_FLAG_CHROMAKEY |
1786 V4L2_FBUF_FLAG_SRC_CHROMAKEY))
1787 enable = 1;
1788 else
1789 enable = 0;
1790 if (ovl->manager && ovl->manager->get_manager_info &&
1791 ovl->manager->set_manager_info) {
1792
1793 ovl->manager->get_manager_info(ovl->manager, &info);
1794 info.trans_enabled = enable;
1795 info.trans_key_type = key_type;
1796 info.trans_key = vout->win.chromakey;
1797
1798 if (ovl->manager->set_manager_info(ovl->manager, &info))
1799 return -EINVAL;
1800 }
1801 if (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA) {
1802 vout->fbuf.flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1803 enable = 1;
1804 } else {
1805 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_LOCAL_ALPHA;
1806 enable = 0;
1807 }
1808 if (ovl->manager && ovl->manager->get_manager_info &&
1809 ovl->manager->set_manager_info) {
1810 ovl->manager->get_manager_info(ovl->manager, &info);
1811 /* enable this only if there is no zorder cap */
1812 if ((ovl->caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
1813 info.partial_alpha_enabled = enable;
1814 if (ovl->manager->set_manager_info(ovl->manager, &info))
1815 return -EINVAL;
1816 }
1817
1818 return 0;
1819 }
1820
1821 static int vidioc_g_fbuf(struct file *file, void *fh,
1822 struct v4l2_framebuffer *a)
1823 {
1824 struct omap_overlay *ovl;
1825 struct omapvideo_info *ovid;
1826 struct omap_vout_device *vout = fh;
1827 struct omap_overlay_manager_info info;
1828
1829 ovid = &vout->vid_info;
1830 ovl = ovid->overlays[0];
1831
1832 /* The video overlay must stay within the framebuffer and can't be
1833 positioned independently. */
1834 a->flags = V4L2_FBUF_FLAG_OVERLAY;
1835 a->capability = V4L2_FBUF_CAP_LOCAL_ALPHA | V4L2_FBUF_CAP_CHROMAKEY
1836 | V4L2_FBUF_CAP_SRC_CHROMAKEY;
1837
1838 if (ovl->manager && ovl->manager->get_manager_info) {
1839 ovl->manager->get_manager_info(ovl->manager, &info);
1840 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_VID_SRC)
1841 a->flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1842 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_GFX_DST)
1843 a->flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1844 }
1845 if (ovl->manager && ovl->manager->get_manager_info) {
1846 ovl->manager->get_manager_info(ovl->manager, &info);
1847 if (info.partial_alpha_enabled)
1848 a->flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1849 }
1850
1851 return 0;
1852 }
1853
1854 static const struct v4l2_ioctl_ops vout_ioctl_ops = {
1855 .vidioc_querycap = vidioc_querycap,
1856 .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out,
1857 .vidioc_g_fmt_vid_out = vidioc_g_fmt_vid_out,
1858 .vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out,
1859 .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out,
1860 .vidioc_queryctrl = vidioc_queryctrl,
1861 .vidioc_g_ctrl = vidioc_g_ctrl,
1862 .vidioc_s_fbuf = vidioc_s_fbuf,
1863 .vidioc_g_fbuf = vidioc_g_fbuf,
1864 .vidioc_s_ctrl = vidioc_s_ctrl,
1865 .vidioc_try_fmt_vid_overlay = vidioc_try_fmt_vid_overlay,
1866 .vidioc_s_fmt_vid_overlay = vidioc_s_fmt_vid_overlay,
1867 .vidioc_enum_fmt_vid_overlay = vidioc_enum_fmt_vid_overlay,
1868 .vidioc_g_fmt_vid_overlay = vidioc_g_fmt_vid_overlay,
1869 .vidioc_cropcap = vidioc_cropcap,
1870 .vidioc_g_crop = vidioc_g_crop,
1871 .vidioc_s_crop = vidioc_s_crop,
1872 .vidioc_reqbufs = vidioc_reqbufs,
1873 .vidioc_querybuf = vidioc_querybuf,
1874 .vidioc_qbuf = vidioc_qbuf,
1875 .vidioc_dqbuf = vidioc_dqbuf,
1876 .vidioc_streamon = vidioc_streamon,
1877 .vidioc_streamoff = vidioc_streamoff,
1878 };
1879
1880 static const struct v4l2_file_operations omap_vout_fops = {
1881 .owner = THIS_MODULE,
1882 .poll = omap_vout_poll,
1883 .unlocked_ioctl = video_ioctl2,
1884 .mmap = omap_vout_mmap,
1885 .open = omap_vout_open,
1886 .release = omap_vout_release,
1887 };
1888
1889 /* Init functions used during driver initialization */
1890 /* Initial setup of video_data */
1891 static int __init omap_vout_setup_video_data(struct omap_vout_device *vout)
1892 {
1893 struct video_device *vfd;
1894 struct v4l2_pix_format *pix;
1895 struct v4l2_control *control;
1896 struct omap_dss_device *display =
1897 vout->vid_info.overlays[0]->manager->device;
1898
1899 /* set the default pix */
1900 pix = &vout->pix;
1901
1902 /* Set the default picture of QVGA */
1903 pix->width = QQVGA_WIDTH;
1904 pix->height = QQVGA_HEIGHT;
1905
1906 /* Default pixel format is RGB 5-6-5 */
1907 pix->pixelformat = V4L2_PIX_FMT_RGB565;
1908 pix->field = V4L2_FIELD_ANY;
1909 pix->bytesperline = pix->width * 2;
1910 pix->sizeimage = pix->bytesperline * pix->height;
1911 pix->priv = 0;
1912 pix->colorspace = V4L2_COLORSPACE_JPEG;
1913
1914 vout->bpp = RGB565_BPP;
1915 vout->fbuf.fmt.width = display->panel.timings.x_res;
1916 vout->fbuf.fmt.height = display->panel.timings.y_res;
1917
1918 /* Set the data structures for the overlay parameters*/
1919 vout->win.global_alpha = 255;
1920 vout->fbuf.flags = 0;
1921 vout->fbuf.capability = V4L2_FBUF_CAP_LOCAL_ALPHA |
1922 V4L2_FBUF_CAP_SRC_CHROMAKEY | V4L2_FBUF_CAP_CHROMAKEY;
1923 vout->win.chromakey = 0;
1924
1925 omap_vout_new_format(pix, &vout->fbuf, &vout->crop, &vout->win);
1926
1927 /*Initialize the control variables for
1928 rotation, flipping and background color. */
1929 control = vout->control;
1930 control[0].id = V4L2_CID_ROTATE;
1931 control[0].value = 0;
1932 vout->rotation = 0;
1933 vout->mirror = 0;
1934 vout->control[2].id = V4L2_CID_HFLIP;
1935 vout->control[2].value = 0;
1936 if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
1937 vout->vrfb_bpp = 2;
1938
1939 control[1].id = V4L2_CID_BG_COLOR;
1940 control[1].value = 0;
1941
1942 /* initialize the video_device struct */
1943 vfd = vout->vfd = video_device_alloc();
1944
1945 if (!vfd) {
1946 printk(KERN_ERR VOUT_NAME ": could not allocate"
1947 " video device struct\n");
1948 return -ENOMEM;
1949 }
1950 vfd->release = video_device_release;
1951 vfd->ioctl_ops = &vout_ioctl_ops;
1952
1953 strlcpy(vfd->name, VOUT_NAME, sizeof(vfd->name));
1954
1955 vfd->fops = &omap_vout_fops;
1956 vfd->v4l2_dev = &vout->vid_dev->v4l2_dev;
1957 mutex_init(&vout->lock);
1958
1959 vfd->minor = -1;
1960 return 0;
1961
1962 }
1963
1964 /* Setup video buffers */
1965 static int __init omap_vout_setup_video_bufs(struct platform_device *pdev,
1966 int vid_num)
1967 {
1968 u32 numbuffers;
1969 int ret = 0, i;
1970 struct omapvideo_info *ovid;
1971 struct omap_vout_device *vout;
1972 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1973 struct omap2video_device *vid_dev =
1974 container_of(v4l2_dev, struct omap2video_device, v4l2_dev);
1975
1976 vout = vid_dev->vouts[vid_num];
1977 ovid = &vout->vid_info;
1978
1979 numbuffers = (vid_num == 0) ? video1_numbuffers : video2_numbuffers;
1980 vout->buffer_size = (vid_num == 0) ? video1_bufsize : video2_bufsize;
1981 dev_info(&pdev->dev, "Buffer Size = %d\n", vout->buffer_size);
1982
1983 for (i = 0; i < numbuffers; i++) {
1984 vout->buf_virt_addr[i] =
1985 omap_vout_alloc_buffer(vout->buffer_size,
1986 (u32 *) &vout->buf_phy_addr[i]);
1987 if (!vout->buf_virt_addr[i]) {
1988 numbuffers = i;
1989 ret = -ENOMEM;
1990 goto free_buffers;
1991 }
1992 }
1993
1994 vout->cropped_offset = 0;
1995
1996 if (ovid->rotation_type == VOUT_ROT_VRFB) {
1997 int static_vrfb_allocation = (vid_num == 0) ?
1998 vid1_static_vrfb_alloc : vid2_static_vrfb_alloc;
1999 ret = omap_vout_setup_vrfb_bufs(pdev, vid_num,
2000 static_vrfb_allocation);
2001 }
2002
2003 return ret;
2004
2005 free_buffers:
2006 for (i = 0; i < numbuffers; i++) {
2007 omap_vout_free_buffer(vout->buf_virt_addr[i],
2008 vout->buffer_size);
2009 vout->buf_virt_addr[i] = 0;
2010 vout->buf_phy_addr[i] = 0;
2011 }
2012 return ret;
2013
2014 }
2015
2016 /* Create video out devices */
2017 static int __init omap_vout_create_video_devices(struct platform_device *pdev)
2018 {
2019 int ret = 0, k;
2020 struct omap_vout_device *vout;
2021 struct video_device *vfd = NULL;
2022 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2023 struct omap2video_device *vid_dev = container_of(v4l2_dev,
2024 struct omap2video_device, v4l2_dev);
2025
2026 for (k = 0; k < pdev->num_resources; k++) {
2027
2028 vout = kzalloc(sizeof(struct omap_vout_device), GFP_KERNEL);
2029 if (!vout) {
2030 dev_err(&pdev->dev, ": could not allocate memory\n");
2031 return -ENOMEM;
2032 }
2033
2034 vout->vid = k;
2035 vid_dev->vouts[k] = vout;
2036 vout->vid_dev = vid_dev;
2037 /* Select video2 if only 1 overlay is controlled by V4L2 */
2038 if (pdev->num_resources == 1)
2039 vout->vid_info.overlays[0] = vid_dev->overlays[k + 2];
2040 else
2041 /* Else select video1 and video2 one by one. */
2042 vout->vid_info.overlays[0] = vid_dev->overlays[k + 1];
2043 vout->vid_info.num_overlays = 1;
2044 vout->vid_info.id = k + 1;
2045
2046 /* Set VRFB as rotation_type for omap2 and omap3 */
2047 if (cpu_is_omap24xx() || cpu_is_omap34xx())
2048 vout->vid_info.rotation_type = VOUT_ROT_VRFB;
2049
2050 /* Setup the default configuration for the video devices
2051 */
2052 if (omap_vout_setup_video_data(vout) != 0) {
2053 ret = -ENOMEM;
2054 goto error;
2055 }
2056
2057 /* Allocate default number of buffers for the video streaming
2058 * and reserve the VRFB space for rotation
2059 */
2060 if (omap_vout_setup_video_bufs(pdev, k) != 0) {
2061 ret = -ENOMEM;
2062 goto error1;
2063 }
2064
2065 /* Register the Video device with V4L2
2066 */
2067 vfd = vout->vfd;
2068 if (video_register_device(vfd, VFL_TYPE_GRABBER, -1) < 0) {
2069 dev_err(&pdev->dev, ": Could not register "
2070 "Video for Linux device\n");
2071 vfd->minor = -1;
2072 ret = -ENODEV;
2073 goto error2;
2074 }
2075 video_set_drvdata(vfd, vout);
2076
2077 /* Configure the overlay structure */
2078 ret = omapvid_init(vid_dev->vouts[k], 0);
2079 if (!ret)
2080 goto success;
2081
2082 error2:
2083 if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
2084 omap_vout_release_vrfb(vout);
2085 omap_vout_free_buffers(vout);
2086 error1:
2087 video_device_release(vfd);
2088 error:
2089 kfree(vout);
2090 return ret;
2091
2092 success:
2093 dev_info(&pdev->dev, ": registered and initialized"
2094 " video device %d\n", vfd->minor);
2095 if (k == (pdev->num_resources - 1))
2096 return 0;
2097 }
2098
2099 return -ENODEV;
2100 }
2101 /* Driver functions */
2102 static void omap_vout_cleanup_device(struct omap_vout_device *vout)
2103 {
2104 struct video_device *vfd;
2105 struct omapvideo_info *ovid;
2106
2107 if (!vout)
2108 return;
2109
2110 vfd = vout->vfd;
2111 ovid = &vout->vid_info;
2112 if (vfd) {
2113 if (!video_is_registered(vfd)) {
2114 /*
2115 * The device was never registered, so release the
2116 * video_device struct directly.
2117 */
2118 video_device_release(vfd);
2119 } else {
2120 /*
2121 * The unregister function will release the video_device
2122 * struct as well as unregistering it.
2123 */
2124 video_unregister_device(vfd);
2125 }
2126 }
2127 if (ovid->rotation_type == VOUT_ROT_VRFB) {
2128 omap_vout_release_vrfb(vout);
2129 /* Free the VRFB buffer if allocated
2130 * init time
2131 */
2132 if (vout->vrfb_static_allocation)
2133 omap_vout_free_vrfb_buffers(vout);
2134 }
2135 omap_vout_free_buffers(vout);
2136
2137 kfree(vout);
2138 }
2139
2140 static int omap_vout_remove(struct platform_device *pdev)
2141 {
2142 int k;
2143 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2144 struct omap2video_device *vid_dev = container_of(v4l2_dev, struct
2145 omap2video_device, v4l2_dev);
2146
2147 v4l2_device_unregister(v4l2_dev);
2148 for (k = 0; k < pdev->num_resources; k++)
2149 omap_vout_cleanup_device(vid_dev->vouts[k]);
2150
2151 for (k = 0; k < vid_dev->num_displays; k++) {
2152 if (vid_dev->displays[k]->state != OMAP_DSS_DISPLAY_DISABLED)
2153 vid_dev->displays[k]->driver->disable(vid_dev->displays[k]);
2154
2155 omap_dss_put_device(vid_dev->displays[k]);
2156 }
2157 kfree(vid_dev);
2158 return 0;
2159 }
2160
2161 static int __init omap_vout_probe(struct platform_device *pdev)
2162 {
2163 int ret = 0, i;
2164 struct omap_overlay *ovl;
2165 struct omap_dss_device *dssdev = NULL;
2166 struct omap_dss_device *def_display;
2167 struct omap2video_device *vid_dev = NULL;
2168
2169 if (pdev->num_resources == 0) {
2170 dev_err(&pdev->dev, "probed for an unknown device\n");
2171 return -ENODEV;
2172 }
2173
2174 vid_dev = kzalloc(sizeof(struct omap2video_device), GFP_KERNEL);
2175 if (vid_dev == NULL)
2176 return -ENOMEM;
2177
2178 vid_dev->num_displays = 0;
2179 for_each_dss_dev(dssdev) {
2180 omap_dss_get_device(dssdev);
2181
2182 if (!dssdev->driver) {
2183 dev_warn(&pdev->dev, "no driver for display: %s\n",
2184 dssdev->name);
2185 omap_dss_put_device(dssdev);
2186 continue;
2187 }
2188
2189 vid_dev->displays[vid_dev->num_displays++] = dssdev;
2190 }
2191
2192 if (vid_dev->num_displays == 0) {
2193 dev_err(&pdev->dev, "no displays\n");
2194 ret = -EINVAL;
2195 goto probe_err0;
2196 }
2197
2198 vid_dev->num_overlays = omap_dss_get_num_overlays();
2199 for (i = 0; i < vid_dev->num_overlays; i++)
2200 vid_dev->overlays[i] = omap_dss_get_overlay(i);
2201
2202 vid_dev->num_managers = omap_dss_get_num_overlay_managers();
2203 for (i = 0; i < vid_dev->num_managers; i++)
2204 vid_dev->managers[i] = omap_dss_get_overlay_manager(i);
2205
2206 /* Get the Video1 overlay and video2 overlay.
2207 * Setup the Display attached to that overlays
2208 */
2209 for (i = 1; i < vid_dev->num_overlays; i++) {
2210 ovl = omap_dss_get_overlay(i);
2211 if (ovl->manager && ovl->manager->device) {
2212 def_display = ovl->manager->device;
2213 } else {
2214 dev_warn(&pdev->dev, "cannot find display\n");
2215 def_display = NULL;
2216 }
2217 if (def_display) {
2218 struct omap_dss_driver *dssdrv = def_display->driver;
2219
2220 ret = dssdrv->enable(def_display);
2221 if (ret) {
2222 /* Here we are not considering a error
2223 * as display may be enabled by frame
2224 * buffer driver
2225 */
2226 dev_warn(&pdev->dev,
2227 "'%s' Display already enabled\n",
2228 def_display->name);
2229 }
2230 }
2231 }
2232
2233 if (v4l2_device_register(&pdev->dev, &vid_dev->v4l2_dev) < 0) {
2234 dev_err(&pdev->dev, "v4l2_device_register failed\n");
2235 ret = -ENODEV;
2236 goto probe_err1;
2237 }
2238
2239 ret = omap_vout_create_video_devices(pdev);
2240 if (ret)
2241 goto probe_err2;
2242
2243 for (i = 0; i < vid_dev->num_displays; i++) {
2244 struct omap_dss_device *display = vid_dev->displays[i];
2245
2246 if (display->driver->update)
2247 display->driver->update(display, 0, 0,
2248 display->panel.timings.x_res,
2249 display->panel.timings.y_res);
2250 }
2251 return 0;
2252
2253 probe_err2:
2254 v4l2_device_unregister(&vid_dev->v4l2_dev);
2255 probe_err1:
2256 for (i = 1; i < vid_dev->num_overlays; i++) {
2257 def_display = NULL;
2258 ovl = omap_dss_get_overlay(i);
2259 if (ovl->manager && ovl->manager->device)
2260 def_display = ovl->manager->device;
2261
2262 if (def_display && def_display->driver)
2263 def_display->driver->disable(def_display);
2264 }
2265 probe_err0:
2266 kfree(vid_dev);
2267 return ret;
2268 }
2269
2270 static struct platform_driver omap_vout_driver = {
2271 .driver = {
2272 .name = VOUT_NAME,
2273 },
2274 .probe = omap_vout_probe,
2275 .remove = omap_vout_remove,
2276 };
2277
2278 static int __init omap_vout_init(void)
2279 {
2280 if (platform_driver_register(&omap_vout_driver) != 0) {
2281 printk(KERN_ERR VOUT_NAME ":Could not register Video driver\n");
2282 return -EINVAL;
2283 }
2284 return 0;
2285 }
2286
2287 static void omap_vout_cleanup(void)
2288 {
2289 platform_driver_unregister(&omap_vout_driver);
2290 }
2291
2292 late_initcall(omap_vout_init);
2293 module_exit(omap_vout_cleanup);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree