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Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux...
[linux/fpc-iii.git] / drivers / media / platform / omap / omap_vout.c
blob70c28d19ea04c8a7cfa452a6c68d0452094d6fcb
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 <video/omapvrfb.h>
48 #include <video/omapdss.h>
49
50 #include "omap_voutlib.h"
51 #include "omap_voutdef.h"
52 #include "omap_vout_vrfb.h"
53
54 MODULE_AUTHOR("Texas Instruments");
55 MODULE_DESCRIPTION("OMAP Video for Linux Video out driver");
56 MODULE_LICENSE("GPL");
57
58 /* Driver Configuration macros */
59 #define VOUT_NAME "omap_vout"
60
61 enum omap_vout_channels {
62 OMAP_VIDEO1,
63 OMAP_VIDEO2,
64 };
65
66 static struct videobuf_queue_ops video_vbq_ops;
67 /* Variables configurable through module params*/
68 static u32 video1_numbuffers = 3;
69 static u32 video2_numbuffers = 3;
70 static u32 video1_bufsize = OMAP_VOUT_MAX_BUF_SIZE;
71 static u32 video2_bufsize = OMAP_VOUT_MAX_BUF_SIZE;
72 static bool vid1_static_vrfb_alloc;
73 static bool vid2_static_vrfb_alloc;
74 static bool debug;
75
76 /* Module parameters */
77 module_param(video1_numbuffers, uint, S_IRUGO);
78 MODULE_PARM_DESC(video1_numbuffers,
79 "Number of buffers to be allocated at init time for Video1 device.");
80
81 module_param(video2_numbuffers, uint, S_IRUGO);
82 MODULE_PARM_DESC(video2_numbuffers,
83 "Number of buffers to be allocated at init time for Video2 device.");
84
85 module_param(video1_bufsize, uint, S_IRUGO);
86 MODULE_PARM_DESC(video1_bufsize,
87 "Size of the buffer to be allocated for video1 device");
88
89 module_param(video2_bufsize, uint, S_IRUGO);
90 MODULE_PARM_DESC(video2_bufsize,
91 "Size of the buffer to be allocated for video2 device");
92
93 module_param(vid1_static_vrfb_alloc, bool, S_IRUGO);
94 MODULE_PARM_DESC(vid1_static_vrfb_alloc,
95 "Static allocation of the VRFB buffer for video1 device");
96
97 module_param(vid2_static_vrfb_alloc, bool, S_IRUGO);
98 MODULE_PARM_DESC(vid2_static_vrfb_alloc,
99 "Static allocation of the VRFB buffer for video2 device");
100
101 module_param(debug, bool, S_IRUGO);
102 MODULE_PARM_DESC(debug, "Debug level (0-1)");
103
104 /* list of image formats supported by OMAP2 video pipelines */
105 static const struct v4l2_fmtdesc omap_formats[] = {
106 {
107 /* Note: V4L2 defines RGB565 as:
108 *
109 * Byte 0 Byte 1
110 * g2 g1 g0 r4 r3 r2 r1 r0 b4 b3 b2 b1 b0 g5 g4 g3
111 *
112 * We interpret RGB565 as:
113 *
114 * Byte 0 Byte 1
115 * g2 g1 g0 b4 b3 b2 b1 b0 r4 r3 r2 r1 r0 g5 g4 g3
116 */
117 .description = "RGB565, le",
118 .pixelformat = V4L2_PIX_FMT_RGB565,
119 },
120 {
121 /* Note: V4L2 defines RGB32 as: RGB-8-8-8-8 we use
122 * this for RGB24 unpack mode, the last 8 bits are ignored
123 * */
124 .description = "RGB32, le",
125 .pixelformat = V4L2_PIX_FMT_RGB32,
126 },
127 {
128 /* Note: V4L2 defines RGB24 as: RGB-8-8-8 we use
129 * this for RGB24 packed mode
130 *
131 */
132 .description = "RGB24, le",
133 .pixelformat = V4L2_PIX_FMT_RGB24,
134 },
135 {
136 .description = "YUYV (YUV 4:2:2), packed",
137 .pixelformat = V4L2_PIX_FMT_YUYV,
138 },
139 {
140 .description = "UYVY, packed",
141 .pixelformat = V4L2_PIX_FMT_UYVY,
142 },
143 };
144
145 #define NUM_OUTPUT_FORMATS (ARRAY_SIZE(omap_formats))
146
147 /*
148 * Try format
149 */
150 static int omap_vout_try_format(struct v4l2_pix_format *pix)
151 {
152 int ifmt, bpp = 0;
153
154 pix->height = clamp(pix->height, (u32)VID_MIN_HEIGHT,
155 (u32)VID_MAX_HEIGHT);
156 pix->width = clamp(pix->width, (u32)VID_MIN_WIDTH, (u32)VID_MAX_WIDTH);
157
158 for (ifmt = 0; ifmt < NUM_OUTPUT_FORMATS; ifmt++) {
159 if (pix->pixelformat == omap_formats[ifmt].pixelformat)
160 break;
161 }
162
163 if (ifmt == NUM_OUTPUT_FORMATS)
164 ifmt = 0;
165
166 pix->pixelformat = omap_formats[ifmt].pixelformat;
167 pix->field = V4L2_FIELD_ANY;
168
169 switch (pix->pixelformat) {
170 case V4L2_PIX_FMT_YUYV:
171 case V4L2_PIX_FMT_UYVY:
172 default:
173 pix->colorspace = V4L2_COLORSPACE_JPEG;
174 bpp = YUYV_BPP;
175 break;
176 case V4L2_PIX_FMT_RGB565:
177 case V4L2_PIX_FMT_RGB565X:
178 pix->colorspace = V4L2_COLORSPACE_SRGB;
179 bpp = RGB565_BPP;
180 break;
181 case V4L2_PIX_FMT_RGB24:
182 pix->colorspace = V4L2_COLORSPACE_SRGB;
183 bpp = RGB24_BPP;
184 break;
185 case V4L2_PIX_FMT_RGB32:
186 case V4L2_PIX_FMT_BGR32:
187 pix->colorspace = V4L2_COLORSPACE_SRGB;
188 bpp = RGB32_BPP;
189 break;
190 }
191 pix->bytesperline = pix->width * bpp;
192 pix->sizeimage = pix->bytesperline * pix->height;
193
194 return bpp;
195 }
196
197 /*
198 * omap_vout_get_userptr: Convert user space virtual address to physical
199 * address.
200 */
201 static int omap_vout_get_userptr(struct videobuf_buffer *vb, u32 virtp,
202 u32 *physp)
203 {
204 struct frame_vector *vec;
205 int ret;
206
207 /* For kernel direct-mapped memory, take the easy way */
208 if (virtp >= PAGE_OFFSET) {
209 *physp = virt_to_phys((void *)virtp);
210 return 0;
211 }
212
213 vec = frame_vector_create(1);
214 if (!vec)
215 return -ENOMEM;
216
217 ret = get_vaddr_frames(virtp, 1, true, false, vec);
218 if (ret != 1) {
219 frame_vector_destroy(vec);
220 return -EINVAL;
221 }
222 *physp = __pfn_to_phys(frame_vector_pfns(vec)[0]);
223 vb->priv = vec;
224
225 return 0;
226 }
227
228 /*
229 * Free the V4L2 buffers
230 */
231 void omap_vout_free_buffers(struct omap_vout_device *vout)
232 {
233 int i, numbuffers;
234
235 /* Allocate memory for the buffers */
236 numbuffers = (vout->vid) ? video2_numbuffers : video1_numbuffers;
237 vout->buffer_size = (vout->vid) ? video2_bufsize : video1_bufsize;
238
239 for (i = 0; i < numbuffers; i++) {
240 omap_vout_free_buffer(vout->buf_virt_addr[i],
241 vout->buffer_size);
242 vout->buf_phy_addr[i] = 0;
243 vout->buf_virt_addr[i] = 0;
244 }
245 }
246
247 /*
248 * Convert V4L2 rotation to DSS rotation
249 * V4L2 understand 0, 90, 180, 270.
250 * Convert to 0, 1, 2 and 3 respectively for DSS
251 */
252 static int v4l2_rot_to_dss_rot(int v4l2_rotation,
253 enum dss_rotation *rotation, bool mirror)
254 {
255 int ret = 0;
256
257 switch (v4l2_rotation) {
258 case 90:
259 *rotation = dss_rotation_90_degree;
260 break;
261 case 180:
262 *rotation = dss_rotation_180_degree;
263 break;
264 case 270:
265 *rotation = dss_rotation_270_degree;
266 break;
267 case 0:
268 *rotation = dss_rotation_0_degree;
269 break;
270 default:
271 ret = -EINVAL;
272 }
273 return ret;
274 }
275
276 static int omap_vout_calculate_offset(struct omap_vout_device *vout)
277 {
278 struct omapvideo_info *ovid;
279 struct v4l2_rect *crop = &vout->crop;
280 struct v4l2_pix_format *pix = &vout->pix;
281 int *cropped_offset = &vout->cropped_offset;
282 int ps = 2, line_length = 0;
283
284 ovid = &vout->vid_info;
285
286 if (ovid->rotation_type == VOUT_ROT_VRFB) {
287 omap_vout_calculate_vrfb_offset(vout);
288 } else {
289 vout->line_length = line_length = pix->width;
290
291 if (V4L2_PIX_FMT_YUYV == pix->pixelformat ||
292 V4L2_PIX_FMT_UYVY == pix->pixelformat)
293 ps = 2;
294 else if (V4L2_PIX_FMT_RGB32 == pix->pixelformat)
295 ps = 4;
296 else if (V4L2_PIX_FMT_RGB24 == pix->pixelformat)
297 ps = 3;
298
299 vout->ps = ps;
300
301 *cropped_offset = (line_length * ps) *
302 crop->top + crop->left * ps;
303 }
304
305 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "%s Offset:%x\n",
306 __func__, vout->cropped_offset);
307
308 return 0;
309 }
310
311 /*
312 * Convert V4L2 pixel format to DSS pixel format
313 */
314 static int video_mode_to_dss_mode(struct omap_vout_device *vout)
315 {
316 struct omap_overlay *ovl;
317 struct omapvideo_info *ovid;
318 struct v4l2_pix_format *pix = &vout->pix;
319 enum omap_color_mode mode;
320
321 ovid = &vout->vid_info;
322 ovl = ovid->overlays[0];
323
324 switch (pix->pixelformat) {
325 case V4L2_PIX_FMT_YUYV:
326 mode = OMAP_DSS_COLOR_YUV2;
327 break;
328 case V4L2_PIX_FMT_UYVY:
329 mode = OMAP_DSS_COLOR_UYVY;
330 break;
331 case V4L2_PIX_FMT_RGB565:
332 mode = OMAP_DSS_COLOR_RGB16;
333 break;
334 case V4L2_PIX_FMT_RGB24:
335 mode = OMAP_DSS_COLOR_RGB24P;
336 break;
337 case V4L2_PIX_FMT_RGB32:
338 mode = (ovl->id == OMAP_DSS_VIDEO1) ?
339 OMAP_DSS_COLOR_RGB24U : OMAP_DSS_COLOR_ARGB32;
340 break;
341 case V4L2_PIX_FMT_BGR32:
342 mode = OMAP_DSS_COLOR_RGBX32;
343 break;
344 default:
345 mode = -EINVAL;
346 break;
347 }
348 return mode;
349 }
350
351 /*
352 * Setup the overlay
353 */
354 static int omapvid_setup_overlay(struct omap_vout_device *vout,
355 struct omap_overlay *ovl, int posx, int posy, int outw,
356 int outh, u32 addr)
357 {
358 int ret = 0;
359 struct omap_overlay_info info;
360 int cropheight, cropwidth, pixwidth;
361
362 if ((ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0 &&
363 (outw != vout->pix.width || outh != vout->pix.height)) {
364 ret = -EINVAL;
365 goto setup_ovl_err;
366 }
367
368 vout->dss_mode = video_mode_to_dss_mode(vout);
369 if (vout->dss_mode == -EINVAL) {
370 ret = -EINVAL;
371 goto setup_ovl_err;
372 }
373
374 /* Setup the input plane parameters according to
375 * rotation value selected.
376 */
377 if (is_rotation_90_or_270(vout)) {
378 cropheight = vout->crop.width;
379 cropwidth = vout->crop.height;
380 pixwidth = vout->pix.height;
381 } else {
382 cropheight = vout->crop.height;
383 cropwidth = vout->crop.width;
384 pixwidth = vout->pix.width;
385 }
386
387 ovl->get_overlay_info(ovl, &info);
388 info.paddr = addr;
389 info.width = cropwidth;
390 info.height = cropheight;
391 info.color_mode = vout->dss_mode;
392 info.mirror = vout->mirror;
393 info.pos_x = posx;
394 info.pos_y = posy;
395 info.out_width = outw;
396 info.out_height = outh;
397 info.global_alpha = vout->win.global_alpha;
398 if (!is_rotation_enabled(vout)) {
399 info.rotation = 0;
400 info.rotation_type = OMAP_DSS_ROT_DMA;
401 info.screen_width = pixwidth;
402 } else {
403 info.rotation = vout->rotation;
404 info.rotation_type = OMAP_DSS_ROT_VRFB;
405 info.screen_width = 2048;
406 }
407
408 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
409 "%s enable=%d addr=%pad width=%d\n height=%d color_mode=%d\n"
410 "rotation=%d mirror=%d posx=%d posy=%d out_width = %d \n"
411 "out_height=%d rotation_type=%d screen_width=%d\n",
412 __func__, ovl->is_enabled(ovl), &info.paddr, info.width, info.height,
413 info.color_mode, info.rotation, info.mirror, info.pos_x,
414 info.pos_y, info.out_width, info.out_height, info.rotation_type,
415 info.screen_width);
416
417 ret = ovl->set_overlay_info(ovl, &info);
418 if (ret)
419 goto setup_ovl_err;
420
421 return 0;
422
423 setup_ovl_err:
424 v4l2_warn(&vout->vid_dev->v4l2_dev, "setup_overlay failed\n");
425 return ret;
426 }
427
428 /*
429 * Initialize the overlay structure
430 */
431 static int omapvid_init(struct omap_vout_device *vout, u32 addr)
432 {
433 int ret = 0, i;
434 struct v4l2_window *win;
435 struct omap_overlay *ovl;
436 int posx, posy, outw, outh;
437 struct omap_video_timings *timing;
438 struct omapvideo_info *ovid = &vout->vid_info;
439
440 win = &vout->win;
441 for (i = 0; i < ovid->num_overlays; i++) {
442 struct omap_dss_device *dssdev;
443
444 ovl = ovid->overlays[i];
445 dssdev = ovl->get_device(ovl);
446
447 if (!dssdev)
448 return -EINVAL;
449
450 timing = &dssdev->panel.timings;
451
452 outw = win->w.width;
453 outh = win->w.height;
454 switch (vout->rotation) {
455 case dss_rotation_90_degree:
456 /* Invert the height and width for 90
457 * and 270 degree rotation
458 */
459 swap(outw, outh);
460 posy = (timing->y_res - win->w.width) - win->w.left;
461 posx = win->w.top;
462 break;
463
464 case dss_rotation_180_degree:
465 posx = (timing->x_res - win->w.width) - win->w.left;
466 posy = (timing->y_res - win->w.height) - win->w.top;
467 break;
468
469 case dss_rotation_270_degree:
470 swap(outw, outh);
471 posy = win->w.left;
472 posx = (timing->x_res - win->w.height) - win->w.top;
473 break;
474
475 default:
476 posx = win->w.left;
477 posy = win->w.top;
478 break;
479 }
480
481 ret = omapvid_setup_overlay(vout, ovl, posx, posy,
482 outw, outh, addr);
483 if (ret)
484 goto omapvid_init_err;
485 }
486 return 0;
487
488 omapvid_init_err:
489 v4l2_warn(&vout->vid_dev->v4l2_dev, "apply_changes failed\n");
490 return ret;
491 }
492
493 /*
494 * Apply the changes set the go bit of DSS
495 */
496 static int omapvid_apply_changes(struct omap_vout_device *vout)
497 {
498 int i;
499 struct omap_overlay *ovl;
500 struct omapvideo_info *ovid = &vout->vid_info;
501
502 for (i = 0; i < ovid->num_overlays; i++) {
503 struct omap_dss_device *dssdev;
504
505 ovl = ovid->overlays[i];
506 dssdev = ovl->get_device(ovl);
507 if (!dssdev)
508 return -EINVAL;
509 ovl->manager->apply(ovl->manager);
510 }
511
512 return 0;
513 }
514
515 static int omapvid_handle_interlace_display(struct omap_vout_device *vout,
516 unsigned int irqstatus, struct timeval timevalue)
517 {
518 u32 fid;
519
520 if (vout->first_int) {
521 vout->first_int = 0;
522 goto err;
523 }
524
525 if (irqstatus & DISPC_IRQ_EVSYNC_ODD)
526 fid = 1;
527 else if (irqstatus & DISPC_IRQ_EVSYNC_EVEN)
528 fid = 0;
529 else
530 goto err;
531
532 vout->field_id ^= 1;
533 if (fid != vout->field_id) {
534 if (fid == 0)
535 vout->field_id = fid;
536 } else if (0 == fid) {
537 if (vout->cur_frm == vout->next_frm)
538 goto err;
539
540 vout->cur_frm->ts = timevalue;
541 vout->cur_frm->state = VIDEOBUF_DONE;
542 wake_up_interruptible(&vout->cur_frm->done);
543 vout->cur_frm = vout->next_frm;
544 } else {
545 if (list_empty(&vout->dma_queue) ||
546 (vout->cur_frm != vout->next_frm))
547 goto err;
548 }
549
550 return vout->field_id;
551 err:
552 return 0;
553 }
554
555 static void omap_vout_isr(void *arg, unsigned int irqstatus)
556 {
557 int ret, fid, mgr_id;
558 u32 addr, irq;
559 struct omap_overlay *ovl;
560 struct timeval timevalue;
561 struct omapvideo_info *ovid;
562 struct omap_dss_device *cur_display;
563 struct omap_vout_device *vout = (struct omap_vout_device *)arg;
564
565 if (!vout->streaming)
566 return;
567
568 ovid = &vout->vid_info;
569 ovl = ovid->overlays[0];
570
571 mgr_id = ovl->manager->id;
572
573 /* get the display device attached to the overlay */
574 cur_display = ovl->get_device(ovl);
575
576 if (!cur_display)
577 return;
578
579 spin_lock(&vout->vbq_lock);
580 v4l2_get_timestamp(&timevalue);
581
582 switch (cur_display->type) {
583 case OMAP_DISPLAY_TYPE_DSI:
584 case OMAP_DISPLAY_TYPE_DPI:
585 case OMAP_DISPLAY_TYPE_DVI:
586 if (mgr_id == OMAP_DSS_CHANNEL_LCD)
587 irq = DISPC_IRQ_VSYNC;
588 else if (mgr_id == OMAP_DSS_CHANNEL_LCD2)
589 irq = DISPC_IRQ_VSYNC2;
590 else
591 goto vout_isr_err;
592
593 if (!(irqstatus & irq))
594 goto vout_isr_err;
595 break;
596 case OMAP_DISPLAY_TYPE_VENC:
597 fid = omapvid_handle_interlace_display(vout, irqstatus,
598 timevalue);
599 if (!fid)
600 goto vout_isr_err;
601 break;
602 case OMAP_DISPLAY_TYPE_HDMI:
603 if (!(irqstatus & DISPC_IRQ_EVSYNC_EVEN))
604 goto vout_isr_err;
605 break;
606 default:
607 goto vout_isr_err;
608 }
609
610 if (!vout->first_int && (vout->cur_frm != vout->next_frm)) {
611 vout->cur_frm->ts = timevalue;
612 vout->cur_frm->state = VIDEOBUF_DONE;
613 wake_up_interruptible(&vout->cur_frm->done);
614 vout->cur_frm = vout->next_frm;
615 }
616
617 vout->first_int = 0;
618 if (list_empty(&vout->dma_queue))
619 goto vout_isr_err;
620
621 vout->next_frm = list_entry(vout->dma_queue.next,
622 struct videobuf_buffer, queue);
623 list_del(&vout->next_frm->queue);
624
625 vout->next_frm->state = VIDEOBUF_ACTIVE;
626
627 addr = (unsigned long) vout->queued_buf_addr[vout->next_frm->i]
628 + vout->cropped_offset;
629
630 /* First save the configuration in ovelray structure */
631 ret = omapvid_init(vout, addr);
632 if (ret) {
633 printk(KERN_ERR VOUT_NAME
634 "failed to set overlay info\n");
635 goto vout_isr_err;
636 }
637
638 /* Enable the pipeline and set the Go bit */
639 ret = omapvid_apply_changes(vout);
640 if (ret)
641 printk(KERN_ERR VOUT_NAME "failed to change mode\n");
642
643 vout_isr_err:
644 spin_unlock(&vout->vbq_lock);
645 }
646
647 /* Video buffer call backs */
648
649 /*
650 * Buffer setup function is called by videobuf layer when REQBUF ioctl is
651 * called. This is used to setup buffers and return size and count of
652 * buffers allocated. After the call to this buffer, videobuf layer will
653 * setup buffer queue depending on the size and count of buffers
654 */
655 static int omap_vout_buffer_setup(struct videobuf_queue *q, unsigned int *count,
656 unsigned int *size)
657 {
658 int startindex = 0, i, j;
659 u32 phy_addr = 0, virt_addr = 0;
660 struct omap_vout_device *vout = q->priv_data;
661 struct omapvideo_info *ovid = &vout->vid_info;
662 int vid_max_buf_size;
663
664 if (!vout)
665 return -EINVAL;
666
667 vid_max_buf_size = vout->vid == OMAP_VIDEO1 ? video1_bufsize :
668 video2_bufsize;
669
670 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != q->type)
671 return -EINVAL;
672
673 startindex = (vout->vid == OMAP_VIDEO1) ?
674 video1_numbuffers : video2_numbuffers;
675 if (V4L2_MEMORY_MMAP == vout->memory && *count < startindex)
676 *count = startindex;
677
678 if (ovid->rotation_type == VOUT_ROT_VRFB) {
679 if (omap_vout_vrfb_buffer_setup(vout, count, startindex))
680 return -ENOMEM;
681 }
682
683 if (V4L2_MEMORY_MMAP != vout->memory)
684 return 0;
685
686 /* Now allocated the V4L2 buffers */
687 *size = PAGE_ALIGN(vout->pix.width * vout->pix.height * vout->bpp);
688 startindex = (vout->vid == OMAP_VIDEO1) ?
689 video1_numbuffers : video2_numbuffers;
690
691 /* Check the size of the buffer */
692 if (*size > vid_max_buf_size) {
693 v4l2_err(&vout->vid_dev->v4l2_dev,
694 "buffer allocation mismatch [%u] [%u]\n",
695 *size, vout->buffer_size);
696 return -ENOMEM;
697 }
698
699 for (i = startindex; i < *count; i++) {
700 vout->buffer_size = *size;
701
702 virt_addr = omap_vout_alloc_buffer(vout->buffer_size,
703 &phy_addr);
704 if (!virt_addr) {
705 if (ovid->rotation_type == VOUT_ROT_NONE) {
706 break;
707 } else {
708 if (!is_rotation_enabled(vout))
709 break;
710 /* Free the VRFB buffers if no space for V4L2 buffers */
711 for (j = i; j < *count; j++) {
712 omap_vout_free_buffer(
713 vout->smsshado_virt_addr[j],
714 vout->smsshado_size);
715 vout->smsshado_virt_addr[j] = 0;
716 vout->smsshado_phy_addr[j] = 0;
717 }
718 }
719 }
720 vout->buf_virt_addr[i] = virt_addr;
721 vout->buf_phy_addr[i] = phy_addr;
722 }
723 *count = vout->buffer_allocated = i;
724
725 return 0;
726 }
727
728 /*
729 * Free the V4L2 buffers additionally allocated than default
730 * number of buffers
731 */
732 static void omap_vout_free_extra_buffers(struct omap_vout_device *vout)
733 {
734 int num_buffers = 0, i;
735
736 num_buffers = (vout->vid == OMAP_VIDEO1) ?
737 video1_numbuffers : video2_numbuffers;
738
739 for (i = num_buffers; i < vout->buffer_allocated; i++) {
740 if (vout->buf_virt_addr[i])
741 omap_vout_free_buffer(vout->buf_virt_addr[i],
742 vout->buffer_size);
743
744 vout->buf_virt_addr[i] = 0;
745 vout->buf_phy_addr[i] = 0;
746 }
747 vout->buffer_allocated = num_buffers;
748 }
749
750 /*
751 * This function will be called when VIDIOC_QBUF ioctl is called.
752 * It prepare buffers before give out for the display. This function
753 * converts user space virtual address into physical address if userptr memory
754 * exchange mechanism is used. If rotation is enabled, it copies entire
755 * buffer into VRFB memory space before giving it to the DSS.
756 */
757 static int omap_vout_buffer_prepare(struct videobuf_queue *q,
758 struct videobuf_buffer *vb,
759 enum v4l2_field field)
760 {
761 struct omap_vout_device *vout = q->priv_data;
762 struct omapvideo_info *ovid = &vout->vid_info;
763
764 if (VIDEOBUF_NEEDS_INIT == vb->state) {
765 vb->width = vout->pix.width;
766 vb->height = vout->pix.height;
767 vb->size = vb->width * vb->height * vout->bpp;
768 vb->field = field;
769 }
770 vb->state = VIDEOBUF_PREPARED;
771 /* if user pointer memory mechanism is used, get the physical
772 * address of the buffer
773 */
774 if (V4L2_MEMORY_USERPTR == vb->memory) {
775 int ret;
776
777 if (0 == vb->baddr)
778 return -EINVAL;
779 /* Physical address */
780 ret = omap_vout_get_userptr(vb, vb->baddr,
781 (u32 *)&vout->queued_buf_addr[vb->i]);
782 if (ret < 0)
783 return ret;
784 } else {
785 unsigned long addr, dma_addr;
786 unsigned long size;
787
788 addr = (unsigned long) vout->buf_virt_addr[vb->i];
789 size = (unsigned long) vb->size;
790
791 dma_addr = dma_map_single(vout->vid_dev->v4l2_dev.dev, (void *) addr,
792 size, DMA_TO_DEVICE);
793 if (dma_mapping_error(vout->vid_dev->v4l2_dev.dev, dma_addr))
794 v4l2_err(&vout->vid_dev->v4l2_dev, "dma_map_single failed\n");
795
796 vout->queued_buf_addr[vb->i] = (u8 *)vout->buf_phy_addr[vb->i];
797 }
798
799 if (ovid->rotation_type == VOUT_ROT_VRFB)
800 return omap_vout_prepare_vrfb(vout, vb);
801 else
802 return 0;
803 }
804
805 /*
806 * Buffer queue function will be called from the videobuf layer when _QBUF
807 * ioctl is called. It is used to enqueue buffer, which is ready to be
808 * displayed.
809 */
810 static void omap_vout_buffer_queue(struct videobuf_queue *q,
811 struct videobuf_buffer *vb)
812 {
813 struct omap_vout_device *vout = q->priv_data;
814
815 /* Driver is also maintainig a queue. So enqueue buffer in the driver
816 * queue */
817 list_add_tail(&vb->queue, &vout->dma_queue);
818
819 vb->state = VIDEOBUF_QUEUED;
820 }
821
822 /*
823 * Buffer release function is called from videobuf layer to release buffer
824 * which are already allocated
825 */
826 static void omap_vout_buffer_release(struct videobuf_queue *q,
827 struct videobuf_buffer *vb)
828 {
829 vb->state = VIDEOBUF_NEEDS_INIT;
830 if (vb->memory == V4L2_MEMORY_USERPTR && vb->priv) {
831 struct frame_vector *vec = vb->priv;
832
833 put_vaddr_frames(vec);
834 frame_vector_destroy(vec);
835 }
836 }
837
838 /*
839 * File operations
840 */
841 static unsigned int omap_vout_poll(struct file *file,
842 struct poll_table_struct *wait)
843 {
844 struct omap_vout_device *vout = file->private_data;
845 struct videobuf_queue *q = &vout->vbq;
846
847 return videobuf_poll_stream(file, q, wait);
848 }
849
850 static void omap_vout_vm_open(struct vm_area_struct *vma)
851 {
852 struct omap_vout_device *vout = vma->vm_private_data;
853
854 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
855 "vm_open [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
856 vout->mmap_count++;
857 }
858
859 static void omap_vout_vm_close(struct vm_area_struct *vma)
860 {
861 struct omap_vout_device *vout = vma->vm_private_data;
862
863 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
864 "vm_close [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
865 vout->mmap_count--;
866 }
867
868 static const struct vm_operations_struct omap_vout_vm_ops = {
869 .open = omap_vout_vm_open,
870 .close = omap_vout_vm_close,
871 };
872
873 static int omap_vout_mmap(struct file *file, struct vm_area_struct *vma)
874 {
875 int i;
876 void *pos;
877 unsigned long start = vma->vm_start;
878 unsigned long size = (vma->vm_end - vma->vm_start);
879 struct omap_vout_device *vout = file->private_data;
880 struct videobuf_queue *q = &vout->vbq;
881
882 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
883 " %s pgoff=0x%lx, start=0x%lx, end=0x%lx\n", __func__,
884 vma->vm_pgoff, vma->vm_start, vma->vm_end);
885
886 /* look for the buffer to map */
887 for (i = 0; i < VIDEO_MAX_FRAME; i++) {
888 if (NULL == q->bufs[i])
889 continue;
890 if (V4L2_MEMORY_MMAP != q->bufs[i]->memory)
891 continue;
892 if (q->bufs[i]->boff == (vma->vm_pgoff << PAGE_SHIFT))
893 break;
894 }
895
896 if (VIDEO_MAX_FRAME == i) {
897 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
898 "offset invalid [offset=0x%lx]\n",
899 (vma->vm_pgoff << PAGE_SHIFT));
900 return -EINVAL;
901 }
902 /* Check the size of the buffer */
903 if (size > vout->buffer_size) {
904 v4l2_err(&vout->vid_dev->v4l2_dev,
905 "insufficient memory [%lu] [%u]\n",
906 size, vout->buffer_size);
907 return -ENOMEM;
908 }
909
910 q->bufs[i]->baddr = vma->vm_start;
911
912 vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
913 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
914 vma->vm_ops = &omap_vout_vm_ops;
915 vma->vm_private_data = (void *) vout;
916 pos = (void *)vout->buf_virt_addr[i];
917 vma->vm_pgoff = virt_to_phys((void *)pos) >> PAGE_SHIFT;
918 while (size > 0) {
919 unsigned long pfn;
920 pfn = virt_to_phys((void *) pos) >> PAGE_SHIFT;
921 if (remap_pfn_range(vma, start, pfn, PAGE_SIZE, PAGE_SHARED))
922 return -EAGAIN;
923 start += PAGE_SIZE;
924 pos += PAGE_SIZE;
925 size -= PAGE_SIZE;
926 }
927 vout->mmap_count++;
928 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
929
930 return 0;
931 }
932
933 static int omap_vout_release(struct file *file)
934 {
935 unsigned int ret, i;
936 struct videobuf_queue *q;
937 struct omapvideo_info *ovid;
938 struct omap_vout_device *vout = file->private_data;
939
940 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
941 ovid = &vout->vid_info;
942
943 if (!vout)
944 return 0;
945
946 q = &vout->vbq;
947 /* Disable all the overlay managers connected with this interface */
948 for (i = 0; i < ovid->num_overlays; i++) {
949 struct omap_overlay *ovl = ovid->overlays[i];
950 struct omap_dss_device *dssdev = ovl->get_device(ovl);
951
952 if (dssdev)
953 ovl->disable(ovl);
954 }
955 /* Turn off the pipeline */
956 ret = omapvid_apply_changes(vout);
957 if (ret)
958 v4l2_warn(&vout->vid_dev->v4l2_dev,
959 "Unable to apply changes\n");
960
961 /* Free all buffers */
962 omap_vout_free_extra_buffers(vout);
963
964 /* Free the VRFB buffers only if they are allocated
965 * during reqbufs. Don't free if init time allocated
966 */
967 if (ovid->rotation_type == VOUT_ROT_VRFB) {
968 if (!vout->vrfb_static_allocation)
969 omap_vout_free_vrfb_buffers(vout);
970 }
971 videobuf_mmap_free(q);
972
973 /* Even if apply changes fails we should continue
974 freeing allocated memory */
975 if (vout->streaming) {
976 u32 mask = 0;
977
978 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN |
979 DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_VSYNC2;
980 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
981 vout->streaming = false;
982
983 videobuf_streamoff(q);
984 videobuf_queue_cancel(q);
985 }
986
987 if (vout->mmap_count != 0)
988 vout->mmap_count = 0;
989
990 vout->opened -= 1;
991 file->private_data = NULL;
992
993 if (vout->buffer_allocated)
994 videobuf_mmap_free(q);
995
996 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
997 return ret;
998 }
999
1000 static int omap_vout_open(struct file *file)
1001 {
1002 struct videobuf_queue *q;
1003 struct omap_vout_device *vout = NULL;
1004
1005 vout = video_drvdata(file);
1006 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
1007
1008 if (vout == NULL)
1009 return -ENODEV;
1010
1011 /* for now, we only support single open */
1012 if (vout->opened)
1013 return -EBUSY;
1014
1015 vout->opened += 1;
1016
1017 file->private_data = vout;
1018 vout->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1019
1020 q = &vout->vbq;
1021 video_vbq_ops.buf_setup = omap_vout_buffer_setup;
1022 video_vbq_ops.buf_prepare = omap_vout_buffer_prepare;
1023 video_vbq_ops.buf_release = omap_vout_buffer_release;
1024 video_vbq_ops.buf_queue = omap_vout_buffer_queue;
1025 spin_lock_init(&vout->vbq_lock);
1026
1027 videobuf_queue_dma_contig_init(q, &video_vbq_ops, q->dev,
1028 &vout->vbq_lock, vout->type, V4L2_FIELD_NONE,
1029 sizeof(struct videobuf_buffer), vout, NULL);
1030
1031 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1032 return 0;
1033 }
1034
1035 /*
1036 * V4L2 ioctls
1037 */
1038 static int vidioc_querycap(struct file *file, void *fh,
1039 struct v4l2_capability *cap)
1040 {
1041 struct omap_vout_device *vout = fh;
1042
1043 strlcpy(cap->driver, VOUT_NAME, sizeof(cap->driver));
1044 strlcpy(cap->card, vout->vfd->name, sizeof(cap->card));
1045 cap->bus_info[0] = '\0';
1046 cap->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_OUTPUT |
1047 V4L2_CAP_VIDEO_OUTPUT_OVERLAY;
1048 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
1049
1050 return 0;
1051 }
1052
1053 static int vidioc_enum_fmt_vid_out(struct file *file, void *fh,
1054 struct v4l2_fmtdesc *fmt)
1055 {
1056 int index = fmt->index;
1057
1058 if (index >= NUM_OUTPUT_FORMATS)
1059 return -EINVAL;
1060
1061 fmt->flags = omap_formats[index].flags;
1062 strlcpy(fmt->description, omap_formats[index].description,
1063 sizeof(fmt->description));
1064 fmt->pixelformat = omap_formats[index].pixelformat;
1065
1066 return 0;
1067 }
1068
1069 static int vidioc_g_fmt_vid_out(struct file *file, void *fh,
1070 struct v4l2_format *f)
1071 {
1072 struct omap_vout_device *vout = fh;
1073
1074 f->fmt.pix = vout->pix;
1075 return 0;
1076
1077 }
1078
1079 static int vidioc_try_fmt_vid_out(struct file *file, void *fh,
1080 struct v4l2_format *f)
1081 {
1082 struct omap_overlay *ovl;
1083 struct omapvideo_info *ovid;
1084 struct omap_video_timings *timing;
1085 struct omap_vout_device *vout = fh;
1086 struct omap_dss_device *dssdev;
1087
1088 ovid = &vout->vid_info;
1089 ovl = ovid->overlays[0];
1090 /* get the display device attached to the overlay */
1091 dssdev = ovl->get_device(ovl);
1092
1093 if (!dssdev)
1094 return -EINVAL;
1095
1096 timing = &dssdev->panel.timings;
1097
1098 vout->fbuf.fmt.height = timing->y_res;
1099 vout->fbuf.fmt.width = timing->x_res;
1100
1101 omap_vout_try_format(&f->fmt.pix);
1102 return 0;
1103 }
1104
1105 static int vidioc_s_fmt_vid_out(struct file *file, void *fh,
1106 struct v4l2_format *f)
1107 {
1108 int ret, bpp;
1109 struct omap_overlay *ovl;
1110 struct omapvideo_info *ovid;
1111 struct omap_video_timings *timing;
1112 struct omap_vout_device *vout = fh;
1113 struct omap_dss_device *dssdev;
1114
1115 if (vout->streaming)
1116 return -EBUSY;
1117
1118 mutex_lock(&vout->lock);
1119
1120 ovid = &vout->vid_info;
1121 ovl = ovid->overlays[0];
1122 dssdev = ovl->get_device(ovl);
1123
1124 /* get the display device attached to the overlay */
1125 if (!dssdev) {
1126 ret = -EINVAL;
1127 goto s_fmt_vid_out_exit;
1128 }
1129 timing = &dssdev->panel.timings;
1130
1131 /* We dont support RGB24-packed mode if vrfb rotation
1132 * is enabled*/
1133 if ((is_rotation_enabled(vout)) &&
1134 f->fmt.pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1135 ret = -EINVAL;
1136 goto s_fmt_vid_out_exit;
1137 }
1138
1139 /* get the framebuffer parameters */
1140
1141 if (is_rotation_90_or_270(vout)) {
1142 vout->fbuf.fmt.height = timing->x_res;
1143 vout->fbuf.fmt.width = timing->y_res;
1144 } else {
1145 vout->fbuf.fmt.height = timing->y_res;
1146 vout->fbuf.fmt.width = timing->x_res;
1147 }
1148
1149 /* change to samller size is OK */
1150
1151 bpp = omap_vout_try_format(&f->fmt.pix);
1152 f->fmt.pix.sizeimage = f->fmt.pix.width * f->fmt.pix.height * bpp;
1153
1154 /* try & set the new output format */
1155 vout->bpp = bpp;
1156 vout->pix = f->fmt.pix;
1157 vout->vrfb_bpp = 1;
1158
1159 /* If YUYV then vrfb bpp is 2, for others its 1 */
1160 if (V4L2_PIX_FMT_YUYV == vout->pix.pixelformat ||
1161 V4L2_PIX_FMT_UYVY == vout->pix.pixelformat)
1162 vout->vrfb_bpp = 2;
1163
1164 /* set default crop and win */
1165 omap_vout_new_format(&vout->pix, &vout->fbuf, &vout->crop, &vout->win);
1166
1167 ret = 0;
1168
1169 s_fmt_vid_out_exit:
1170 mutex_unlock(&vout->lock);
1171 return ret;
1172 }
1173
1174 static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh,
1175 struct v4l2_format *f)
1176 {
1177 int ret = 0;
1178 struct omap_vout_device *vout = fh;
1179 struct omap_overlay *ovl;
1180 struct omapvideo_info *ovid;
1181 struct v4l2_window *win = &f->fmt.win;
1182
1183 ovid = &vout->vid_info;
1184 ovl = ovid->overlays[0];
1185
1186 ret = omap_vout_try_window(&vout->fbuf, win);
1187
1188 if (!ret) {
1189 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1190 win->global_alpha = 255;
1191 else
1192 win->global_alpha = f->fmt.win.global_alpha;
1193 }
1194
1195 return ret;
1196 }
1197
1198 static int vidioc_s_fmt_vid_overlay(struct file *file, void *fh,
1199 struct v4l2_format *f)
1200 {
1201 int ret = 0;
1202 struct omap_overlay *ovl;
1203 struct omapvideo_info *ovid;
1204 struct omap_vout_device *vout = fh;
1205 struct v4l2_window *win = &f->fmt.win;
1206
1207 mutex_lock(&vout->lock);
1208 ovid = &vout->vid_info;
1209 ovl = ovid->overlays[0];
1210
1211 ret = omap_vout_new_window(&vout->crop, &vout->win, &vout->fbuf, win);
1212 if (!ret) {
1213 /* Video1 plane does not support global alpha on OMAP3 */
1214 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1215 vout->win.global_alpha = 255;
1216 else
1217 vout->win.global_alpha = f->fmt.win.global_alpha;
1218
1219 vout->win.chromakey = f->fmt.win.chromakey;
1220 }
1221 mutex_unlock(&vout->lock);
1222 return ret;
1223 }
1224
1225 static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh,
1226 struct v4l2_format *f)
1227 {
1228 u32 key_value = 0;
1229 struct omap_overlay *ovl;
1230 struct omapvideo_info *ovid;
1231 struct omap_vout_device *vout = fh;
1232 struct omap_overlay_manager_info info;
1233 struct v4l2_window *win = &f->fmt.win;
1234
1235 ovid = &vout->vid_info;
1236 ovl = ovid->overlays[0];
1237
1238 win->w = vout->win.w;
1239 win->field = vout->win.field;
1240 win->global_alpha = vout->win.global_alpha;
1241
1242 if (ovl->manager && ovl->manager->get_manager_info) {
1243 ovl->manager->get_manager_info(ovl->manager, &info);
1244 key_value = info.trans_key;
1245 }
1246 win->chromakey = key_value;
1247 return 0;
1248 }
1249
1250 static int vidioc_cropcap(struct file *file, void *fh,
1251 struct v4l2_cropcap *cropcap)
1252 {
1253 struct omap_vout_device *vout = fh;
1254 struct v4l2_pix_format *pix = &vout->pix;
1255
1256 if (cropcap->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1257 return -EINVAL;
1258
1259 /* Width and height are always even */
1260 cropcap->bounds.width = pix->width & ~1;
1261 cropcap->bounds.height = pix->height & ~1;
1262
1263 omap_vout_default_crop(&vout->pix, &vout->fbuf, &cropcap->defrect);
1264 cropcap->pixelaspect.numerator = 1;
1265 cropcap->pixelaspect.denominator = 1;
1266 return 0;
1267 }
1268
1269 static int vidioc_g_crop(struct file *file, void *fh, struct v4l2_crop *crop)
1270 {
1271 struct omap_vout_device *vout = fh;
1272
1273 if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1274 return -EINVAL;
1275 crop->c = vout->crop;
1276 return 0;
1277 }
1278
1279 static int vidioc_s_crop(struct file *file, void *fh, const struct v4l2_crop *crop)
1280 {
1281 int ret = -EINVAL;
1282 struct omap_vout_device *vout = fh;
1283 struct omapvideo_info *ovid;
1284 struct omap_overlay *ovl;
1285 struct omap_video_timings *timing;
1286 struct omap_dss_device *dssdev;
1287
1288 if (vout->streaming)
1289 return -EBUSY;
1290
1291 mutex_lock(&vout->lock);
1292 ovid = &vout->vid_info;
1293 ovl = ovid->overlays[0];
1294 /* get the display device attached to the overlay */
1295 dssdev = ovl->get_device(ovl);
1296
1297 if (!dssdev) {
1298 ret = -EINVAL;
1299 goto s_crop_err;
1300 }
1301
1302 timing = &dssdev->panel.timings;
1303
1304 if (is_rotation_90_or_270(vout)) {
1305 vout->fbuf.fmt.height = timing->x_res;
1306 vout->fbuf.fmt.width = timing->y_res;
1307 } else {
1308 vout->fbuf.fmt.height = timing->y_res;
1309 vout->fbuf.fmt.width = timing->x_res;
1310 }
1311
1312 if (crop->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1313 ret = omap_vout_new_crop(&vout->pix, &vout->crop, &vout->win,
1314 &vout->fbuf, &crop->c);
1315
1316 s_crop_err:
1317 mutex_unlock(&vout->lock);
1318 return ret;
1319 }
1320
1321 static int vidioc_queryctrl(struct file *file, void *fh,
1322 struct v4l2_queryctrl *ctrl)
1323 {
1324 int ret = 0;
1325
1326 switch (ctrl->id) {
1327 case V4L2_CID_ROTATE:
1328 ret = v4l2_ctrl_query_fill(ctrl, 0, 270, 90, 0);
1329 break;
1330 case V4L2_CID_BG_COLOR:
1331 ret = v4l2_ctrl_query_fill(ctrl, 0, 0xFFFFFF, 1, 0);
1332 break;
1333 case V4L2_CID_VFLIP:
1334 ret = v4l2_ctrl_query_fill(ctrl, 0, 1, 1, 0);
1335 break;
1336 default:
1337 ctrl->name[0] = '\0';
1338 ret = -EINVAL;
1339 }
1340 return ret;
1341 }
1342
1343 static int vidioc_g_ctrl(struct file *file, void *fh, struct v4l2_control *ctrl)
1344 {
1345 int ret = 0;
1346 struct omap_vout_device *vout = fh;
1347
1348 switch (ctrl->id) {
1349 case V4L2_CID_ROTATE:
1350 ctrl->value = vout->control[0].value;
1351 break;
1352 case V4L2_CID_BG_COLOR:
1353 {
1354 struct omap_overlay_manager_info info;
1355 struct omap_overlay *ovl;
1356
1357 ovl = vout->vid_info.overlays[0];
1358 if (!ovl->manager || !ovl->manager->get_manager_info) {
1359 ret = -EINVAL;
1360 break;
1361 }
1362
1363 ovl->manager->get_manager_info(ovl->manager, &info);
1364 ctrl->value = info.default_color;
1365 break;
1366 }
1367 case V4L2_CID_VFLIP:
1368 ctrl->value = vout->control[2].value;
1369 break;
1370 default:
1371 ret = -EINVAL;
1372 }
1373 return ret;
1374 }
1375
1376 static int vidioc_s_ctrl(struct file *file, void *fh, struct v4l2_control *a)
1377 {
1378 int ret = 0;
1379 struct omap_vout_device *vout = fh;
1380
1381 switch (a->id) {
1382 case V4L2_CID_ROTATE:
1383 {
1384 struct omapvideo_info *ovid;
1385 int rotation = a->value;
1386
1387 ovid = &vout->vid_info;
1388
1389 mutex_lock(&vout->lock);
1390 if (rotation && ovid->rotation_type == VOUT_ROT_NONE) {
1391 mutex_unlock(&vout->lock);
1392 ret = -ERANGE;
1393 break;
1394 }
1395
1396 if (rotation && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1397 mutex_unlock(&vout->lock);
1398 ret = -EINVAL;
1399 break;
1400 }
1401
1402 if (v4l2_rot_to_dss_rot(rotation, &vout->rotation,
1403 vout->mirror)) {
1404 mutex_unlock(&vout->lock);
1405 ret = -EINVAL;
1406 break;
1407 }
1408
1409 vout->control[0].value = rotation;
1410 mutex_unlock(&vout->lock);
1411 break;
1412 }
1413 case V4L2_CID_BG_COLOR:
1414 {
1415 struct omap_overlay *ovl;
1416 unsigned int color = a->value;
1417 struct omap_overlay_manager_info info;
1418
1419 ovl = vout->vid_info.overlays[0];
1420
1421 mutex_lock(&vout->lock);
1422 if (!ovl->manager || !ovl->manager->get_manager_info) {
1423 mutex_unlock(&vout->lock);
1424 ret = -EINVAL;
1425 break;
1426 }
1427
1428 ovl->manager->get_manager_info(ovl->manager, &info);
1429 info.default_color = color;
1430 if (ovl->manager->set_manager_info(ovl->manager, &info)) {
1431 mutex_unlock(&vout->lock);
1432 ret = -EINVAL;
1433 break;
1434 }
1435
1436 vout->control[1].value = color;
1437 mutex_unlock(&vout->lock);
1438 break;
1439 }
1440 case V4L2_CID_VFLIP:
1441 {
1442 struct omapvideo_info *ovid;
1443 unsigned int mirror = a->value;
1444
1445 ovid = &vout->vid_info;
1446
1447 mutex_lock(&vout->lock);
1448 if (mirror && ovid->rotation_type == VOUT_ROT_NONE) {
1449 mutex_unlock(&vout->lock);
1450 ret = -ERANGE;
1451 break;
1452 }
1453
1454 if (mirror && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1455 mutex_unlock(&vout->lock);
1456 ret = -EINVAL;
1457 break;
1458 }
1459 vout->mirror = mirror;
1460 vout->control[2].value = mirror;
1461 mutex_unlock(&vout->lock);
1462 break;
1463 }
1464 default:
1465 ret = -EINVAL;
1466 }
1467 return ret;
1468 }
1469
1470 static int vidioc_reqbufs(struct file *file, void *fh,
1471 struct v4l2_requestbuffers *req)
1472 {
1473 int ret = 0;
1474 unsigned int i, num_buffers = 0;
1475 struct omap_vout_device *vout = fh;
1476 struct videobuf_queue *q = &vout->vbq;
1477
1478 if (req->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1479 return -EINVAL;
1480 /* if memory is not mmp or userptr
1481 return error */
1482 if ((V4L2_MEMORY_MMAP != req->memory) &&
1483 (V4L2_MEMORY_USERPTR != req->memory))
1484 return -EINVAL;
1485
1486 mutex_lock(&vout->lock);
1487 /* Cannot be requested when streaming is on */
1488 if (vout->streaming) {
1489 ret = -EBUSY;
1490 goto reqbuf_err;
1491 }
1492
1493 /* If buffers are already allocated free them */
1494 if (q->bufs[0] && (V4L2_MEMORY_MMAP == q->bufs[0]->memory)) {
1495 if (vout->mmap_count) {
1496 ret = -EBUSY;
1497 goto reqbuf_err;
1498 }
1499 num_buffers = (vout->vid == OMAP_VIDEO1) ?
1500 video1_numbuffers : video2_numbuffers;
1501 for (i = num_buffers; i < vout->buffer_allocated; i++) {
1502 omap_vout_free_buffer(vout->buf_virt_addr[i],
1503 vout->buffer_size);
1504 vout->buf_virt_addr[i] = 0;
1505 vout->buf_phy_addr[i] = 0;
1506 }
1507 vout->buffer_allocated = num_buffers;
1508 videobuf_mmap_free(q);
1509 } else if (q->bufs[0] && (V4L2_MEMORY_USERPTR == q->bufs[0]->memory)) {
1510 if (vout->buffer_allocated) {
1511 videobuf_mmap_free(q);
1512 for (i = 0; i < vout->buffer_allocated; i++) {
1513 kfree(q->bufs[i]);
1514 q->bufs[i] = NULL;
1515 }
1516 vout->buffer_allocated = 0;
1517 }
1518 }
1519
1520 /*store the memory type in data structure */
1521 vout->memory = req->memory;
1522
1523 INIT_LIST_HEAD(&vout->dma_queue);
1524
1525 /* call videobuf_reqbufs api */
1526 ret = videobuf_reqbufs(q, req);
1527 if (ret < 0)
1528 goto reqbuf_err;
1529
1530 vout->buffer_allocated = req->count;
1531
1532 reqbuf_err:
1533 mutex_unlock(&vout->lock);
1534 return ret;
1535 }
1536
1537 static int vidioc_querybuf(struct file *file, void *fh,
1538 struct v4l2_buffer *b)
1539 {
1540 struct omap_vout_device *vout = fh;
1541
1542 return videobuf_querybuf(&vout->vbq, b);
1543 }
1544
1545 static int vidioc_qbuf(struct file *file, void *fh,
1546 struct v4l2_buffer *buffer)
1547 {
1548 struct omap_vout_device *vout = fh;
1549 struct videobuf_queue *q = &vout->vbq;
1550
1551 if ((V4L2_BUF_TYPE_VIDEO_OUTPUT != buffer->type) ||
1552 (buffer->index >= vout->buffer_allocated) ||
1553 (q->bufs[buffer->index]->memory != buffer->memory)) {
1554 return -EINVAL;
1555 }
1556 if (V4L2_MEMORY_USERPTR == buffer->memory) {
1557 if ((buffer->length < vout->pix.sizeimage) ||
1558 (0 == buffer->m.userptr)) {
1559 return -EINVAL;
1560 }
1561 }
1562
1563 if ((is_rotation_enabled(vout)) &&
1564 vout->vrfb_dma_tx.req_status == DMA_CHAN_NOT_ALLOTED) {
1565 v4l2_warn(&vout->vid_dev->v4l2_dev,
1566 "DMA Channel not allocated for Rotation\n");
1567 return -EINVAL;
1568 }
1569
1570 return videobuf_qbuf(q, buffer);
1571 }
1572
1573 static int vidioc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *b)
1574 {
1575 struct omap_vout_device *vout = fh;
1576 struct videobuf_queue *q = &vout->vbq;
1577
1578 int ret;
1579 u32 addr;
1580 unsigned long size;
1581 struct videobuf_buffer *vb;
1582
1583 vb = q->bufs[b->index];
1584
1585 if (!vout->streaming)
1586 return -EINVAL;
1587
1588 if (file->f_flags & O_NONBLOCK)
1589 /* Call videobuf_dqbuf for non blocking mode */
1590 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 1);
1591 else
1592 /* Call videobuf_dqbuf for blocking mode */
1593 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 0);
1594
1595 addr = (unsigned long) vout->buf_phy_addr[vb->i];
1596 size = (unsigned long) vb->size;
1597 dma_unmap_single(vout->vid_dev->v4l2_dev.dev, addr,
1598 size, DMA_TO_DEVICE);
1599 return ret;
1600 }
1601
1602 static int vidioc_streamon(struct file *file, void *fh, enum v4l2_buf_type i)
1603 {
1604 int ret = 0, j;
1605 u32 addr = 0, mask = 0;
1606 struct omap_vout_device *vout = fh;
1607 struct videobuf_queue *q = &vout->vbq;
1608 struct omapvideo_info *ovid = &vout->vid_info;
1609
1610 mutex_lock(&vout->lock);
1611
1612 if (vout->streaming) {
1613 ret = -EBUSY;
1614 goto streamon_err;
1615 }
1616
1617 ret = videobuf_streamon(q);
1618 if (ret)
1619 goto streamon_err;
1620
1621 if (list_empty(&vout->dma_queue)) {
1622 ret = -EIO;
1623 goto streamon_err1;
1624 }
1625
1626 /* Get the next frame from the buffer queue */
1627 vout->next_frm = vout->cur_frm = list_entry(vout->dma_queue.next,
1628 struct videobuf_buffer, queue);
1629 /* Remove buffer from the buffer queue */
1630 list_del(&vout->cur_frm->queue);
1631 /* Mark state of the current frame to active */
1632 vout->cur_frm->state = VIDEOBUF_ACTIVE;
1633 /* Initialize field_id and started member */
1634 vout->field_id = 0;
1635
1636 /* set flag here. Next QBUF will start DMA */
1637 vout->streaming = true;
1638
1639 vout->first_int = 1;
1640
1641 if (omap_vout_calculate_offset(vout)) {
1642 ret = -EINVAL;
1643 goto streamon_err1;
1644 }
1645 addr = (unsigned long) vout->queued_buf_addr[vout->cur_frm->i]
1646 + vout->cropped_offset;
1647
1648 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1649 | DISPC_IRQ_VSYNC2;
1650
1651 /* First save the configuration in ovelray structure */
1652 ret = omapvid_init(vout, addr);
1653 if (ret) {
1654 v4l2_err(&vout->vid_dev->v4l2_dev,
1655 "failed to set overlay info\n");
1656 goto streamon_err1;
1657 }
1658
1659 omap_dispc_register_isr(omap_vout_isr, vout, mask);
1660
1661 /* Enable the pipeline and set the Go bit */
1662 ret = omapvid_apply_changes(vout);
1663 if (ret)
1664 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1665
1666 for (j = 0; j < ovid->num_overlays; j++) {
1667 struct omap_overlay *ovl = ovid->overlays[j];
1668 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1669
1670 if (dssdev) {
1671 ret = ovl->enable(ovl);
1672 if (ret)
1673 goto streamon_err1;
1674 }
1675 }
1676
1677 ret = 0;
1678
1679 streamon_err1:
1680 if (ret)
1681 ret = videobuf_streamoff(q);
1682 streamon_err:
1683 mutex_unlock(&vout->lock);
1684 return ret;
1685 }
1686
1687 static int vidioc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i)
1688 {
1689 u32 mask = 0;
1690 int ret = 0, j;
1691 struct omap_vout_device *vout = fh;
1692 struct omapvideo_info *ovid = &vout->vid_info;
1693
1694 if (!vout->streaming)
1695 return -EINVAL;
1696
1697 vout->streaming = false;
1698 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1699 | DISPC_IRQ_VSYNC2;
1700
1701 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
1702
1703 for (j = 0; j < ovid->num_overlays; j++) {
1704 struct omap_overlay *ovl = ovid->overlays[j];
1705 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1706
1707 if (dssdev)
1708 ovl->disable(ovl);
1709 }
1710
1711 /* Turn of the pipeline */
1712 ret = omapvid_apply_changes(vout);
1713 if (ret)
1714 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode in"
1715 " streamoff\n");
1716
1717 INIT_LIST_HEAD(&vout->dma_queue);
1718 ret = videobuf_streamoff(&vout->vbq);
1719
1720 return ret;
1721 }
1722
1723 static int vidioc_s_fbuf(struct file *file, void *fh,
1724 const struct v4l2_framebuffer *a)
1725 {
1726 int enable = 0;
1727 struct omap_overlay *ovl;
1728 struct omapvideo_info *ovid;
1729 struct omap_vout_device *vout = fh;
1730 struct omap_overlay_manager_info info;
1731 enum omap_dss_trans_key_type key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1732
1733 ovid = &vout->vid_info;
1734 ovl = ovid->overlays[0];
1735
1736 /* OMAP DSS doesn't support Source and Destination color
1737 key together */
1738 if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY) &&
1739 (a->flags & V4L2_FBUF_FLAG_CHROMAKEY))
1740 return -EINVAL;
1741 /* OMAP DSS Doesn't support the Destination color key
1742 and alpha blending together */
1743 if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY) &&
1744 (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA))
1745 return -EINVAL;
1746
1747 if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY)) {
1748 vout->fbuf.flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1749 key_type = OMAP_DSS_COLOR_KEY_VID_SRC;
1750 } else
1751 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1752
1753 if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY)) {
1754 vout->fbuf.flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1755 key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1756 } else
1757 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_CHROMAKEY;
1758
1759 if (a->flags & (V4L2_FBUF_FLAG_CHROMAKEY |
1760 V4L2_FBUF_FLAG_SRC_CHROMAKEY))
1761 enable = 1;
1762 else
1763 enable = 0;
1764 if (ovl->manager && ovl->manager->get_manager_info &&
1765 ovl->manager->set_manager_info) {
1766
1767 ovl->manager->get_manager_info(ovl->manager, &info);
1768 info.trans_enabled = enable;
1769 info.trans_key_type = key_type;
1770 info.trans_key = vout->win.chromakey;
1771
1772 if (ovl->manager->set_manager_info(ovl->manager, &info))
1773 return -EINVAL;
1774 }
1775 if (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA) {
1776 vout->fbuf.flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1777 enable = 1;
1778 } else {
1779 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_LOCAL_ALPHA;
1780 enable = 0;
1781 }
1782 if (ovl->manager && ovl->manager->get_manager_info &&
1783 ovl->manager->set_manager_info) {
1784 ovl->manager->get_manager_info(ovl->manager, &info);
1785 /* enable this only if there is no zorder cap */
1786 if ((ovl->caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
1787 info.partial_alpha_enabled = enable;
1788 if (ovl->manager->set_manager_info(ovl->manager, &info))
1789 return -EINVAL;
1790 }
1791
1792 return 0;
1793 }
1794
1795 static int vidioc_g_fbuf(struct file *file, void *fh,
1796 struct v4l2_framebuffer *a)
1797 {
1798 struct omap_overlay *ovl;
1799 struct omapvideo_info *ovid;
1800 struct omap_vout_device *vout = fh;
1801 struct omap_overlay_manager_info info;
1802
1803 ovid = &vout->vid_info;
1804 ovl = ovid->overlays[0];
1805
1806 /* The video overlay must stay within the framebuffer and can't be
1807 positioned independently. */
1808 a->flags = V4L2_FBUF_FLAG_OVERLAY;
1809 a->capability = V4L2_FBUF_CAP_LOCAL_ALPHA | V4L2_FBUF_CAP_CHROMAKEY
1810 | V4L2_FBUF_CAP_SRC_CHROMAKEY;
1811
1812 if (ovl->manager && ovl->manager->get_manager_info) {
1813 ovl->manager->get_manager_info(ovl->manager, &info);
1814 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_VID_SRC)
1815 a->flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1816 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_GFX_DST)
1817 a->flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1818 }
1819 if (ovl->manager && ovl->manager->get_manager_info) {
1820 ovl->manager->get_manager_info(ovl->manager, &info);
1821 if (info.partial_alpha_enabled)
1822 a->flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1823 }
1824
1825 return 0;
1826 }
1827
1828 static const struct v4l2_ioctl_ops vout_ioctl_ops = {
1829 .vidioc_querycap = vidioc_querycap,
1830 .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out,
1831 .vidioc_g_fmt_vid_out = vidioc_g_fmt_vid_out,
1832 .vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out,
1833 .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out,
1834 .vidioc_queryctrl = vidioc_queryctrl,
1835 .vidioc_g_ctrl = vidioc_g_ctrl,
1836 .vidioc_s_fbuf = vidioc_s_fbuf,
1837 .vidioc_g_fbuf = vidioc_g_fbuf,
1838 .vidioc_s_ctrl = vidioc_s_ctrl,
1839 .vidioc_try_fmt_vid_out_overlay = vidioc_try_fmt_vid_overlay,
1840 .vidioc_s_fmt_vid_out_overlay = vidioc_s_fmt_vid_overlay,
1841 .vidioc_g_fmt_vid_out_overlay = vidioc_g_fmt_vid_overlay,
1842 .vidioc_cropcap = vidioc_cropcap,
1843 .vidioc_g_crop = vidioc_g_crop,
1844 .vidioc_s_crop = vidioc_s_crop,
1845 .vidioc_reqbufs = vidioc_reqbufs,
1846 .vidioc_querybuf = vidioc_querybuf,
1847 .vidioc_qbuf = vidioc_qbuf,
1848 .vidioc_dqbuf = vidioc_dqbuf,
1849 .vidioc_streamon = vidioc_streamon,
1850 .vidioc_streamoff = vidioc_streamoff,
1851 };
1852
1853 static const struct v4l2_file_operations omap_vout_fops = {
1854 .owner = THIS_MODULE,
1855 .poll = omap_vout_poll,
1856 .unlocked_ioctl = video_ioctl2,
1857 .mmap = omap_vout_mmap,
1858 .open = omap_vout_open,
1859 .release = omap_vout_release,
1860 };
1861
1862 /* Init functions used during driver initialization */
1863 /* Initial setup of video_data */
1864 static int __init omap_vout_setup_video_data(struct omap_vout_device *vout)
1865 {
1866 struct video_device *vfd;
1867 struct v4l2_pix_format *pix;
1868 struct v4l2_control *control;
1869 struct omap_overlay *ovl = vout->vid_info.overlays[0];
1870 struct omap_dss_device *display = ovl->get_device(ovl);
1871
1872 /* set the default pix */
1873 pix = &vout->pix;
1874
1875 /* Set the default picture of QVGA */
1876 pix->width = QQVGA_WIDTH;
1877 pix->height = QQVGA_HEIGHT;
1878
1879 /* Default pixel format is RGB 5-6-5 */
1880 pix->pixelformat = V4L2_PIX_FMT_RGB565;
1881 pix->field = V4L2_FIELD_ANY;
1882 pix->bytesperline = pix->width * 2;
1883 pix->sizeimage = pix->bytesperline * pix->height;
1884 pix->colorspace = V4L2_COLORSPACE_JPEG;
1885
1886 vout->bpp = RGB565_BPP;
1887 vout->fbuf.fmt.width = display->panel.timings.x_res;
1888 vout->fbuf.fmt.height = display->panel.timings.y_res;
1889
1890 /* Set the data structures for the overlay parameters*/
1891 vout->win.global_alpha = 255;
1892 vout->fbuf.flags = 0;
1893 vout->fbuf.capability = V4L2_FBUF_CAP_LOCAL_ALPHA |
1894 V4L2_FBUF_CAP_SRC_CHROMAKEY | V4L2_FBUF_CAP_CHROMAKEY;
1895 vout->win.chromakey = 0;
1896
1897 omap_vout_new_format(pix, &vout->fbuf, &vout->crop, &vout->win);
1898
1899 /*Initialize the control variables for
1900 rotation, flipping and background color. */
1901 control = vout->control;
1902 control[0].id = V4L2_CID_ROTATE;
1903 control[0].value = 0;
1904 vout->rotation = 0;
1905 vout->mirror = false;
1906 vout->control[2].id = V4L2_CID_HFLIP;
1907 vout->control[2].value = 0;
1908 if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
1909 vout->vrfb_bpp = 2;
1910
1911 control[1].id = V4L2_CID_BG_COLOR;
1912 control[1].value = 0;
1913
1914 /* initialize the video_device struct */
1915 vfd = vout->vfd = video_device_alloc();
1916
1917 if (!vfd) {
1918 printk(KERN_ERR VOUT_NAME ": could not allocate"
1919 " video device struct\n");
1920 return -ENOMEM;
1921 }
1922 vfd->release = video_device_release;
1923 vfd->ioctl_ops = &vout_ioctl_ops;
1924
1925 strlcpy(vfd->name, VOUT_NAME, sizeof(vfd->name));
1926
1927 vfd->fops = &omap_vout_fops;
1928 vfd->v4l2_dev = &vout->vid_dev->v4l2_dev;
1929 vfd->vfl_dir = VFL_DIR_TX;
1930 mutex_init(&vout->lock);
1931
1932 vfd->minor = -1;
1933 return 0;
1934
1935 }
1936
1937 /* Setup video buffers */
1938 static int __init omap_vout_setup_video_bufs(struct platform_device *pdev,
1939 int vid_num)
1940 {
1941 u32 numbuffers;
1942 int ret = 0, i;
1943 struct omapvideo_info *ovid;
1944 struct omap_vout_device *vout;
1945 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1946 struct omap2video_device *vid_dev =
1947 container_of(v4l2_dev, struct omap2video_device, v4l2_dev);
1948
1949 vout = vid_dev->vouts[vid_num];
1950 ovid = &vout->vid_info;
1951
1952 numbuffers = (vid_num == 0) ? video1_numbuffers : video2_numbuffers;
1953 vout->buffer_size = (vid_num == 0) ? video1_bufsize : video2_bufsize;
1954 dev_info(&pdev->dev, "Buffer Size = %d\n", vout->buffer_size);
1955
1956 for (i = 0; i < numbuffers; i++) {
1957 vout->buf_virt_addr[i] =
1958 omap_vout_alloc_buffer(vout->buffer_size,
1959 (u32 *) &vout->buf_phy_addr[i]);
1960 if (!vout->buf_virt_addr[i]) {
1961 numbuffers = i;
1962 ret = -ENOMEM;
1963 goto free_buffers;
1964 }
1965 }
1966
1967 vout->cropped_offset = 0;
1968
1969 if (ovid->rotation_type == VOUT_ROT_VRFB) {
1970 bool static_vrfb_allocation = (vid_num == 0) ?
1971 vid1_static_vrfb_alloc : vid2_static_vrfb_alloc;
1972 ret = omap_vout_setup_vrfb_bufs(pdev, vid_num,
1973 static_vrfb_allocation);
1974 }
1975
1976 return ret;
1977
1978 free_buffers:
1979 for (i = 0; i < numbuffers; i++) {
1980 omap_vout_free_buffer(vout->buf_virt_addr[i],
1981 vout->buffer_size);
1982 vout->buf_virt_addr[i] = 0;
1983 vout->buf_phy_addr[i] = 0;
1984 }
1985 return ret;
1986
1987 }
1988
1989 /* Create video out devices */
1990 static int __init omap_vout_create_video_devices(struct platform_device *pdev)
1991 {
1992 int ret = 0, k;
1993 struct omap_vout_device *vout;
1994 struct video_device *vfd = NULL;
1995 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1996 struct omap2video_device *vid_dev = container_of(v4l2_dev,
1997 struct omap2video_device, v4l2_dev);
1998
1999 for (k = 0; k < pdev->num_resources; k++) {
2000
2001 vout = kzalloc(sizeof(struct omap_vout_device), GFP_KERNEL);
2002 if (!vout) {
2003 dev_err(&pdev->dev, ": could not allocate memory\n");
2004 return -ENOMEM;
2005 }
2006
2007 vout->vid = k;
2008 vid_dev->vouts[k] = vout;
2009 vout->vid_dev = vid_dev;
2010 /* Select video2 if only 1 overlay is controlled by V4L2 */
2011 if (pdev->num_resources == 1)
2012 vout->vid_info.overlays[0] = vid_dev->overlays[k + 2];
2013 else
2014 /* Else select video1 and video2 one by one. */
2015 vout->vid_info.overlays[0] = vid_dev->overlays[k + 1];
2016 vout->vid_info.num_overlays = 1;
2017 vout->vid_info.id = k + 1;
2018
2019 /* Set VRFB as rotation_type for omap2 and omap3 */
2020 if (omap_vout_dss_omap24xx() || omap_vout_dss_omap34xx())
2021 vout->vid_info.rotation_type = VOUT_ROT_VRFB;
2022
2023 /* Setup the default configuration for the video devices
2024 */
2025 if (omap_vout_setup_video_data(vout) != 0) {
2026 ret = -ENOMEM;
2027 goto error;
2028 }
2029
2030 /* Allocate default number of buffers for the video streaming
2031 * and reserve the VRFB space for rotation
2032 */
2033 if (omap_vout_setup_video_bufs(pdev, k) != 0) {
2034 ret = -ENOMEM;
2035 goto error1;
2036 }
2037
2038 /* Register the Video device with V4L2
2039 */
2040 vfd = vout->vfd;
2041 if (video_register_device(vfd, VFL_TYPE_GRABBER, -1) < 0) {
2042 dev_err(&pdev->dev, ": Could not register "
2043 "Video for Linux device\n");
2044 vfd->minor = -1;
2045 ret = -ENODEV;
2046 goto error2;
2047 }
2048 video_set_drvdata(vfd, vout);
2049
2050 dev_info(&pdev->dev, ": registered and initialized"
2051 " video device %d\n", vfd->minor);
2052 if (k == (pdev->num_resources - 1))
2053 return 0;
2054
2055 continue;
2056 error2:
2057 if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
2058 omap_vout_release_vrfb(vout);
2059 omap_vout_free_buffers(vout);
2060 error1:
2061 video_device_release(vfd);
2062 error:
2063 kfree(vout);
2064 return ret;
2065 }
2066
2067 return -ENODEV;
2068 }
2069 /* Driver functions */
2070 static void omap_vout_cleanup_device(struct omap_vout_device *vout)
2071 {
2072 struct video_device *vfd;
2073 struct omapvideo_info *ovid;
2074
2075 if (!vout)
2076 return;
2077
2078 vfd = vout->vfd;
2079 ovid = &vout->vid_info;
2080 if (vfd) {
2081 if (!video_is_registered(vfd)) {
2082 /*
2083 * The device was never registered, so release the
2084 * video_device struct directly.
2085 */
2086 video_device_release(vfd);
2087 } else {
2088 /*
2089 * The unregister function will release the video_device
2090 * struct as well as unregistering it.
2091 */
2092 video_unregister_device(vfd);
2093 }
2094 }
2095 if (ovid->rotation_type == VOUT_ROT_VRFB) {
2096 omap_vout_release_vrfb(vout);
2097 /* Free the VRFB buffer if allocated
2098 * init time
2099 */
2100 if (vout->vrfb_static_allocation)
2101 omap_vout_free_vrfb_buffers(vout);
2102 }
2103 omap_vout_free_buffers(vout);
2104
2105 kfree(vout);
2106 }
2107
2108 static int omap_vout_remove(struct platform_device *pdev)
2109 {
2110 int k;
2111 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2112 struct omap2video_device *vid_dev = container_of(v4l2_dev, struct
2113 omap2video_device, v4l2_dev);
2114
2115 v4l2_device_unregister(v4l2_dev);
2116 for (k = 0; k < pdev->num_resources; k++)
2117 omap_vout_cleanup_device(vid_dev->vouts[k]);
2118
2119 for (k = 0; k < vid_dev->num_displays; k++) {
2120 if (vid_dev->displays[k]->state != OMAP_DSS_DISPLAY_DISABLED)
2121 vid_dev->displays[k]->driver->disable(vid_dev->displays[k]);
2122
2123 omap_dss_put_device(vid_dev->displays[k]);
2124 }
2125 kfree(vid_dev);
2126 return 0;
2127 }
2128
2129 static int __init omap_vout_probe(struct platform_device *pdev)
2130 {
2131 int ret = 0, i;
2132 struct omap_overlay *ovl;
2133 struct omap_dss_device *dssdev = NULL;
2134 struct omap_dss_device *def_display;
2135 struct omap2video_device *vid_dev = NULL;
2136
2137 if (omapdss_is_initialized() == false)
2138 return -EPROBE_DEFER;
2139
2140 ret = omapdss_compat_init();
2141 if (ret) {
2142 dev_err(&pdev->dev, "failed to init dss\n");
2143 return ret;
2144 }
2145
2146 if (pdev->num_resources == 0) {
2147 dev_err(&pdev->dev, "probed for an unknown device\n");
2148 ret = -ENODEV;
2149 goto err_dss_init;
2150 }
2151
2152 vid_dev = kzalloc(sizeof(struct omap2video_device), GFP_KERNEL);
2153 if (vid_dev == NULL) {
2154 ret = -ENOMEM;
2155 goto err_dss_init;
2156 }
2157
2158 vid_dev->num_displays = 0;
2159 for_each_dss_dev(dssdev) {
2160 omap_dss_get_device(dssdev);
2161
2162 if (!dssdev->driver) {
2163 dev_warn(&pdev->dev, "no driver for display: %s\n",
2164 dssdev->name);
2165 omap_dss_put_device(dssdev);
2166 continue;
2167 }
2168
2169 vid_dev->displays[vid_dev->num_displays++] = dssdev;
2170 }
2171
2172 if (vid_dev->num_displays == 0) {
2173 dev_err(&pdev->dev, "no displays\n");
2174 ret = -EINVAL;
2175 goto probe_err0;
2176 }
2177
2178 vid_dev->num_overlays = omap_dss_get_num_overlays();
2179 for (i = 0; i < vid_dev->num_overlays; i++)
2180 vid_dev->overlays[i] = omap_dss_get_overlay(i);
2181
2182 vid_dev->num_managers = omap_dss_get_num_overlay_managers();
2183 for (i = 0; i < vid_dev->num_managers; i++)
2184 vid_dev->managers[i] = omap_dss_get_overlay_manager(i);
2185
2186 /* Get the Video1 overlay and video2 overlay.
2187 * Setup the Display attached to that overlays
2188 */
2189 for (i = 1; i < vid_dev->num_overlays; i++) {
2190 ovl = omap_dss_get_overlay(i);
2191 dssdev = ovl->get_device(ovl);
2192
2193 if (dssdev) {
2194 def_display = dssdev;
2195 } else {
2196 dev_warn(&pdev->dev, "cannot find display\n");
2197 def_display = NULL;
2198 }
2199 if (def_display) {
2200 struct omap_dss_driver *dssdrv = def_display->driver;
2201
2202 ret = dssdrv->enable(def_display);
2203 if (ret) {
2204 /* Here we are not considering a error
2205 * as display may be enabled by frame
2206 * buffer driver
2207 */
2208 dev_warn(&pdev->dev,
2209 "'%s' Display already enabled\n",
2210 def_display->name);
2211 }
2212 }
2213 }
2214
2215 if (v4l2_device_register(&pdev->dev, &vid_dev->v4l2_dev) < 0) {
2216 dev_err(&pdev->dev, "v4l2_device_register failed\n");
2217 ret = -ENODEV;
2218 goto probe_err1;
2219 }
2220
2221 ret = omap_vout_create_video_devices(pdev);
2222 if (ret)
2223 goto probe_err2;
2224
2225 for (i = 0; i < vid_dev->num_displays; i++) {
2226 struct omap_dss_device *display = vid_dev->displays[i];
2227
2228 if (display->driver->update)
2229 display->driver->update(display, 0, 0,
2230 display->panel.timings.x_res,
2231 display->panel.timings.y_res);
2232 }
2233 return 0;
2234
2235 probe_err2:
2236 v4l2_device_unregister(&vid_dev->v4l2_dev);
2237 probe_err1:
2238 for (i = 1; i < vid_dev->num_overlays; i++) {
2239 def_display = NULL;
2240 ovl = omap_dss_get_overlay(i);
2241 dssdev = ovl->get_device(ovl);
2242
2243 if (dssdev)
2244 def_display = dssdev;
2245
2246 if (def_display && def_display->driver)
2247 def_display->driver->disable(def_display);
2248 }
2249 probe_err0:
2250 kfree(vid_dev);
2251 err_dss_init:
2252 omapdss_compat_uninit();
2253 return ret;
2254 }
2255
2256 static struct platform_driver omap_vout_driver = {
2257 .driver = {
2258 .name = VOUT_NAME,
2259 },
2260 .remove = omap_vout_remove,
2261 };
2262
2263 static int __init omap_vout_init(void)
2264 {
2265 if (platform_driver_probe(&omap_vout_driver, omap_vout_probe) != 0) {
2266 printk(KERN_ERR VOUT_NAME ":Could not register Video driver\n");
2267 return -EINVAL;
2268 }
2269 return 0;
2270 }
2271
2272 static void omap_vout_cleanup(void)
2273 {
2274 platform_driver_unregister(&omap_vout_driver);
2275 }
2276
2277 late_initcall(omap_vout_init);
2278 module_exit(omap_vout_cleanup);
Linux with added FPC-III support