Version:  2.0.40 2.2.26 2.4.37 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8

Linux/drivers/media/platform/omap/omap_vout.c

  1 /*
  2  * omap_vout.c
  3  *
  4  * Copyright (C) 2005-2010 Texas Instruments.
  5  *
  6  * This file is licensed under the terms of the GNU General Public License
  7  * version 2. This program is licensed "as is" without any warranty of any
  8  * kind, whether express or implied.
  9  *
 10  * Leveraged code from the OMAP2 camera driver
 11  * Video-for-Linux (Version 2) camera capture driver for
 12  * the OMAP24xx camera controller.
 13  *
 14  * Author: Andy Lowe (source@mvista.com)
 15  *
 16  * Copyright (C) 2004 MontaVista Software, Inc.
 17  * Copyright (C) 2010 Texas Instruments.
 18  *
 19  * History:
 20  * 20-APR-2006 Khasim           Modified VRFB based Rotation,
 21  *                              The image data is always read from 0 degree
 22  *                              view and written
 23  *                              to the virtual space of desired rotation angle
 24  * 4-DEC-2006  Jian             Changed to support better memory management
 25  *
 26  * 17-Nov-2008 Hardik           Changed driver to use video_ioctl2
 27  *
 28  * 23-Feb-2010 Vaibhav H        Modified to use new DSS2 interface
 29  *
 30  */
 31 
 32 #include <linux/init.h>
 33 #include <linux/module.h>
 34 #include <linux/vmalloc.h>
 35 #include <linux/sched.h>
 36 #include <linux/types.h>
 37 #include <linux/platform_device.h>
 38 #include <linux/irq.h>
 39 #include <linux/videodev2.h>
 40 #include <linux/dma-mapping.h>
 41 #include <linux/slab.h>
 42 
 43 #include <media/videobuf-dma-contig.h>
 44 #include <media/v4l2-device.h>
 45 #include <media/v4l2-ioctl.h>
 46 
 47 #include <video/omapvrfb.h>
 48 #include <video/omapfb_dss.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 omap_vout_s_ctrl(struct v4l2_ctrl *ctrl)
1322 {
1323         struct omap_vout_device *vout =
1324                 container_of(ctrl->handler, struct omap_vout_device, ctrl_handler);
1325         int ret = 0;
1326 
1327         switch (ctrl->id) {
1328         case V4L2_CID_ROTATE: {
1329                 struct omapvideo_info *ovid;
1330                 int rotation = ctrl->val;
1331 
1332                 ovid = &vout->vid_info;
1333 
1334                 mutex_lock(&vout->lock);
1335                 if (rotation && ovid->rotation_type == VOUT_ROT_NONE) {
1336                         mutex_unlock(&vout->lock);
1337                         ret = -ERANGE;
1338                         break;
1339                 }
1340 
1341                 if (rotation && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1342                         mutex_unlock(&vout->lock);
1343                         ret = -EINVAL;
1344                         break;
1345                 }
1346 
1347                 if (v4l2_rot_to_dss_rot(rotation, &vout->rotation,
1348                                                         vout->mirror)) {
1349                         mutex_unlock(&vout->lock);
1350                         ret = -EINVAL;
1351                         break;
1352                 }
1353                 mutex_unlock(&vout->lock);
1354                 break;
1355         }
1356         case V4L2_CID_BG_COLOR:
1357         {
1358                 struct omap_overlay *ovl;
1359                 unsigned int color = ctrl->val;
1360                 struct omap_overlay_manager_info info;
1361 
1362                 ovl = vout->vid_info.overlays[0];
1363 
1364                 mutex_lock(&vout->lock);
1365                 if (!ovl->manager || !ovl->manager->get_manager_info) {
1366                         mutex_unlock(&vout->lock);
1367                         ret = -EINVAL;
1368                         break;
1369                 }
1370 
1371                 ovl->manager->get_manager_info(ovl->manager, &info);
1372                 info.default_color = color;
1373                 if (ovl->manager->set_manager_info(ovl->manager, &info)) {
1374                         mutex_unlock(&vout->lock);
1375                         ret = -EINVAL;
1376                         break;
1377                 }
1378                 mutex_unlock(&vout->lock);
1379                 break;
1380         }
1381         case V4L2_CID_VFLIP:
1382         {
1383                 struct omapvideo_info *ovid;
1384                 unsigned int mirror = ctrl->val;
1385 
1386                 ovid = &vout->vid_info;
1387 
1388                 mutex_lock(&vout->lock);
1389                 if (mirror && ovid->rotation_type == VOUT_ROT_NONE) {
1390                         mutex_unlock(&vout->lock);
1391                         ret = -ERANGE;
1392                         break;
1393                 }
1394 
1395                 if (mirror  && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1396                         mutex_unlock(&vout->lock);
1397                         ret = -EINVAL;
1398                         break;
1399                 }
1400                 vout->mirror = mirror;
1401                 mutex_unlock(&vout->lock);
1402                 break;
1403         }
1404         default:
1405                 return -EINVAL;
1406         }
1407         return ret;
1408 }
1409 
1410 static const struct v4l2_ctrl_ops omap_vout_ctrl_ops = {
1411         .s_ctrl = omap_vout_s_ctrl,
1412 };
1413 
1414 static int vidioc_reqbufs(struct file *file, void *fh,
1415                         struct v4l2_requestbuffers *req)
1416 {
1417         int ret = 0;
1418         unsigned int i, num_buffers = 0;
1419         struct omap_vout_device *vout = fh;
1420         struct videobuf_queue *q = &vout->vbq;
1421 
1422         if (req->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1423                 return -EINVAL;
1424         /* if memory is not mmp or userptr
1425            return error */
1426         if ((V4L2_MEMORY_MMAP != req->memory) &&
1427                         (V4L2_MEMORY_USERPTR != req->memory))
1428                 return -EINVAL;
1429 
1430         mutex_lock(&vout->lock);
1431         /* Cannot be requested when streaming is on */
1432         if (vout->streaming) {
1433                 ret = -EBUSY;
1434                 goto reqbuf_err;
1435         }
1436 
1437         /* If buffers are already allocated free them */
1438         if (q->bufs[0] && (V4L2_MEMORY_MMAP == q->bufs[0]->memory)) {
1439                 if (vout->mmap_count) {
1440                         ret = -EBUSY;
1441                         goto reqbuf_err;
1442                 }
1443                 num_buffers = (vout->vid == OMAP_VIDEO1) ?
1444                         video1_numbuffers : video2_numbuffers;
1445                 for (i = num_buffers; i < vout->buffer_allocated; i++) {
1446                         omap_vout_free_buffer(vout->buf_virt_addr[i],
1447                                         vout->buffer_size);
1448                         vout->buf_virt_addr[i] = 0;
1449                         vout->buf_phy_addr[i] = 0;
1450                 }
1451                 vout->buffer_allocated = num_buffers;
1452                 videobuf_mmap_free(q);
1453         } else if (q->bufs[0] && (V4L2_MEMORY_USERPTR == q->bufs[0]->memory)) {
1454                 if (vout->buffer_allocated) {
1455                         videobuf_mmap_free(q);
1456                         for (i = 0; i < vout->buffer_allocated; i++) {
1457                                 kfree(q->bufs[i]);
1458                                 q->bufs[i] = NULL;
1459                         }
1460                         vout->buffer_allocated = 0;
1461                 }
1462         }
1463 
1464         /*store the memory type in data structure */
1465         vout->memory = req->memory;
1466 
1467         INIT_LIST_HEAD(&vout->dma_queue);
1468 
1469         /* call videobuf_reqbufs api */
1470         ret = videobuf_reqbufs(q, req);
1471         if (ret < 0)
1472                 goto reqbuf_err;
1473 
1474         vout->buffer_allocated = req->count;
1475 
1476 reqbuf_err:
1477         mutex_unlock(&vout->lock);
1478         return ret;
1479 }
1480 
1481 static int vidioc_querybuf(struct file *file, void *fh,
1482                         struct v4l2_buffer *b)
1483 {
1484         struct omap_vout_device *vout = fh;
1485 
1486         return videobuf_querybuf(&vout->vbq, b);
1487 }
1488 
1489 static int vidioc_qbuf(struct file *file, void *fh,
1490                         struct v4l2_buffer *buffer)
1491 {
1492         struct omap_vout_device *vout = fh;
1493         struct videobuf_queue *q = &vout->vbq;
1494 
1495         if ((V4L2_BUF_TYPE_VIDEO_OUTPUT != buffer->type) ||
1496                         (buffer->index >= vout->buffer_allocated) ||
1497                         (q->bufs[buffer->index]->memory != buffer->memory)) {
1498                 return -EINVAL;
1499         }
1500         if (V4L2_MEMORY_USERPTR == buffer->memory) {
1501                 if ((buffer->length < vout->pix.sizeimage) ||
1502                                 (0 == buffer->m.userptr)) {
1503                         return -EINVAL;
1504                 }
1505         }
1506 
1507         if ((is_rotation_enabled(vout)) &&
1508                         vout->vrfb_dma_tx.req_status == DMA_CHAN_NOT_ALLOTED) {
1509                 v4l2_warn(&vout->vid_dev->v4l2_dev,
1510                                 "DMA Channel not allocated for Rotation\n");
1511                 return -EINVAL;
1512         }
1513 
1514         return videobuf_qbuf(q, buffer);
1515 }
1516 
1517 static int vidioc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *b)
1518 {
1519         struct omap_vout_device *vout = fh;
1520         struct videobuf_queue *q = &vout->vbq;
1521 
1522         int ret;
1523         u32 addr;
1524         unsigned long size;
1525         struct videobuf_buffer *vb;
1526 
1527         vb = q->bufs[b->index];
1528 
1529         if (!vout->streaming)
1530                 return -EINVAL;
1531 
1532         if (file->f_flags & O_NONBLOCK)
1533                 /* Call videobuf_dqbuf for non blocking mode */
1534                 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 1);
1535         else
1536                 /* Call videobuf_dqbuf for  blocking mode */
1537                 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 0);
1538 
1539         addr = (unsigned long) vout->buf_phy_addr[vb->i];
1540         size = (unsigned long) vb->size;
1541         dma_unmap_single(vout->vid_dev->v4l2_dev.dev,  addr,
1542                                 size, DMA_TO_DEVICE);
1543         return ret;
1544 }
1545 
1546 static int vidioc_streamon(struct file *file, void *fh, enum v4l2_buf_type i)
1547 {
1548         int ret = 0, j;
1549         u32 addr = 0, mask = 0;
1550         struct omap_vout_device *vout = fh;
1551         struct videobuf_queue *q = &vout->vbq;
1552         struct omapvideo_info *ovid = &vout->vid_info;
1553 
1554         mutex_lock(&vout->lock);
1555 
1556         if (vout->streaming) {
1557                 ret = -EBUSY;
1558                 goto streamon_err;
1559         }
1560 
1561         ret = videobuf_streamon(q);
1562         if (ret)
1563                 goto streamon_err;
1564 
1565         if (list_empty(&vout->dma_queue)) {
1566                 ret = -EIO;
1567                 goto streamon_err1;
1568         }
1569 
1570         /* Get the next frame from the buffer queue */
1571         vout->next_frm = vout->cur_frm = list_entry(vout->dma_queue.next,
1572                         struct videobuf_buffer, queue);
1573         /* Remove buffer from the buffer queue */
1574         list_del(&vout->cur_frm->queue);
1575         /* Mark state of the current frame to active */
1576         vout->cur_frm->state = VIDEOBUF_ACTIVE;
1577         /* Initialize field_id and started member */
1578         vout->field_id = 0;
1579 
1580         /* set flag here. Next QBUF will start DMA */
1581         vout->streaming = true;
1582 
1583         vout->first_int = 1;
1584 
1585         if (omap_vout_calculate_offset(vout)) {
1586                 ret = -EINVAL;
1587                 goto streamon_err1;
1588         }
1589         addr = (unsigned long) vout->queued_buf_addr[vout->cur_frm->i]
1590                 + vout->cropped_offset;
1591 
1592         mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1593                 | DISPC_IRQ_VSYNC2;
1594 
1595         /* First save the configuration in ovelray structure */
1596         ret = omapvid_init(vout, addr);
1597         if (ret) {
1598                 v4l2_err(&vout->vid_dev->v4l2_dev,
1599                                 "failed to set overlay info\n");
1600                 goto streamon_err1;
1601         }
1602 
1603         omap_dispc_register_isr(omap_vout_isr, vout, mask);
1604 
1605         /* Enable the pipeline and set the Go bit */
1606         ret = omapvid_apply_changes(vout);
1607         if (ret)
1608                 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1609 
1610         for (j = 0; j < ovid->num_overlays; j++) {
1611                 struct omap_overlay *ovl = ovid->overlays[j];
1612                 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1613 
1614                 if (dssdev) {
1615                         ret = ovl->enable(ovl);
1616                         if (ret)
1617                                 goto streamon_err1;
1618                 }
1619         }
1620 
1621         ret = 0;
1622 
1623 streamon_err1:
1624         if (ret)
1625                 ret = videobuf_streamoff(q);
1626 streamon_err:
1627         mutex_unlock(&vout->lock);
1628         return ret;
1629 }
1630 
1631 static int vidioc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i)
1632 {
1633         u32 mask = 0;
1634         int ret = 0, j;
1635         struct omap_vout_device *vout = fh;
1636         struct omapvideo_info *ovid = &vout->vid_info;
1637 
1638         if (!vout->streaming)
1639                 return -EINVAL;
1640 
1641         vout->streaming = false;
1642         mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1643                 | DISPC_IRQ_VSYNC2;
1644 
1645         omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
1646 
1647         for (j = 0; j < ovid->num_overlays; j++) {
1648                 struct omap_overlay *ovl = ovid->overlays[j];
1649                 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1650 
1651                 if (dssdev)
1652                         ovl->disable(ovl);
1653         }
1654 
1655         /* Turn of the pipeline */
1656         ret = omapvid_apply_changes(vout);
1657         if (ret)
1658                 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode in"
1659                                 " streamoff\n");
1660 
1661         INIT_LIST_HEAD(&vout->dma_queue);
1662         ret = videobuf_streamoff(&vout->vbq);
1663 
1664         return ret;
1665 }
1666 
1667 static int vidioc_s_fbuf(struct file *file, void *fh,
1668                                 const struct v4l2_framebuffer *a)
1669 {
1670         int enable = 0;
1671         struct omap_overlay *ovl;
1672         struct omapvideo_info *ovid;
1673         struct omap_vout_device *vout = fh;
1674         struct omap_overlay_manager_info info;
1675         enum omap_dss_trans_key_type key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1676 
1677         ovid = &vout->vid_info;
1678         ovl = ovid->overlays[0];
1679 
1680         /* OMAP DSS doesn't support Source and Destination color
1681            key together */
1682         if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY) &&
1683                         (a->flags & V4L2_FBUF_FLAG_CHROMAKEY))
1684                 return -EINVAL;
1685         /* OMAP DSS Doesn't support the Destination color key
1686            and alpha blending together */
1687         if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY) &&
1688                         (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA))
1689                 return -EINVAL;
1690 
1691         if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY)) {
1692                 vout->fbuf.flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1693                 key_type =  OMAP_DSS_COLOR_KEY_VID_SRC;
1694         } else
1695                 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1696 
1697         if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY)) {
1698                 vout->fbuf.flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1699                 key_type =  OMAP_DSS_COLOR_KEY_GFX_DST;
1700         } else
1701                 vout->fbuf.flags &=  ~V4L2_FBUF_FLAG_CHROMAKEY;
1702 
1703         if (a->flags & (V4L2_FBUF_FLAG_CHROMAKEY |
1704                                 V4L2_FBUF_FLAG_SRC_CHROMAKEY))
1705                 enable = 1;
1706         else
1707                 enable = 0;
1708         if (ovl->manager && ovl->manager->get_manager_info &&
1709                         ovl->manager->set_manager_info) {
1710 
1711                 ovl->manager->get_manager_info(ovl->manager, &info);
1712                 info.trans_enabled = enable;
1713                 info.trans_key_type = key_type;
1714                 info.trans_key = vout->win.chromakey;
1715 
1716                 if (ovl->manager->set_manager_info(ovl->manager, &info))
1717                         return -EINVAL;
1718         }
1719         if (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA) {
1720                 vout->fbuf.flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1721                 enable = 1;
1722         } else {
1723                 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_LOCAL_ALPHA;
1724                 enable = 0;
1725         }
1726         if (ovl->manager && ovl->manager->get_manager_info &&
1727                         ovl->manager->set_manager_info) {
1728                 ovl->manager->get_manager_info(ovl->manager, &info);
1729                 /* enable this only if there is no zorder cap */
1730                 if ((ovl->caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
1731                         info.partial_alpha_enabled = enable;
1732                 if (ovl->manager->set_manager_info(ovl->manager, &info))
1733                         return -EINVAL;
1734         }
1735 
1736         return 0;
1737 }
1738 
1739 static int vidioc_g_fbuf(struct file *file, void *fh,
1740                 struct v4l2_framebuffer *a)
1741 {
1742         struct omap_overlay *ovl;
1743         struct omapvideo_info *ovid;
1744         struct omap_vout_device *vout = fh;
1745         struct omap_overlay_manager_info info;
1746 
1747         ovid = &vout->vid_info;
1748         ovl = ovid->overlays[0];
1749 
1750         /* The video overlay must stay within the framebuffer and can't be
1751            positioned independently. */
1752         a->flags = V4L2_FBUF_FLAG_OVERLAY;
1753         a->capability = V4L2_FBUF_CAP_LOCAL_ALPHA | V4L2_FBUF_CAP_CHROMAKEY
1754                 | V4L2_FBUF_CAP_SRC_CHROMAKEY;
1755 
1756         if (ovl->manager && ovl->manager->get_manager_info) {
1757                 ovl->manager->get_manager_info(ovl->manager, &info);
1758                 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_VID_SRC)
1759                         a->flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1760                 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_GFX_DST)
1761                         a->flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1762         }
1763         if (ovl->manager && ovl->manager->get_manager_info) {
1764                 ovl->manager->get_manager_info(ovl->manager, &info);
1765                 if (info.partial_alpha_enabled)
1766                         a->flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1767         }
1768 
1769         return 0;
1770 }
1771 
1772 static const struct v4l2_ioctl_ops vout_ioctl_ops = {
1773         .vidioc_querycap                        = vidioc_querycap,
1774         .vidioc_enum_fmt_vid_out                = vidioc_enum_fmt_vid_out,
1775         .vidioc_g_fmt_vid_out                   = vidioc_g_fmt_vid_out,
1776         .vidioc_try_fmt_vid_out                 = vidioc_try_fmt_vid_out,
1777         .vidioc_s_fmt_vid_out                   = vidioc_s_fmt_vid_out,
1778         .vidioc_s_fbuf                          = vidioc_s_fbuf,
1779         .vidioc_g_fbuf                          = vidioc_g_fbuf,
1780         .vidioc_try_fmt_vid_out_overlay         = vidioc_try_fmt_vid_overlay,
1781         .vidioc_s_fmt_vid_out_overlay           = vidioc_s_fmt_vid_overlay,
1782         .vidioc_g_fmt_vid_out_overlay           = vidioc_g_fmt_vid_overlay,
1783         .vidioc_cropcap                         = vidioc_cropcap,
1784         .vidioc_g_crop                          = vidioc_g_crop,
1785         .vidioc_s_crop                          = vidioc_s_crop,
1786         .vidioc_reqbufs                         = vidioc_reqbufs,
1787         .vidioc_querybuf                        = vidioc_querybuf,
1788         .vidioc_qbuf                            = vidioc_qbuf,
1789         .vidioc_dqbuf                           = vidioc_dqbuf,
1790         .vidioc_streamon                        = vidioc_streamon,
1791         .vidioc_streamoff                       = vidioc_streamoff,
1792 };
1793 
1794 static const struct v4l2_file_operations omap_vout_fops = {
1795         .owner          = THIS_MODULE,
1796         .poll           = omap_vout_poll,
1797         .unlocked_ioctl = video_ioctl2,
1798         .mmap           = omap_vout_mmap,
1799         .open           = omap_vout_open,
1800         .release        = omap_vout_release,
1801 };
1802 
1803 /* Init functions used during driver initialization */
1804 /* Initial setup of video_data */
1805 static int __init omap_vout_setup_video_data(struct omap_vout_device *vout)
1806 {
1807         struct video_device *vfd;
1808         struct v4l2_pix_format *pix;
1809         struct omap_overlay *ovl = vout->vid_info.overlays[0];
1810         struct omap_dss_device *display = ovl->get_device(ovl);
1811         struct v4l2_ctrl_handler *hdl;
1812 
1813         /* set the default pix */
1814         pix = &vout->pix;
1815 
1816         /* Set the default picture of QVGA  */
1817         pix->width = QQVGA_WIDTH;
1818         pix->height = QQVGA_HEIGHT;
1819 
1820         /* Default pixel format is RGB 5-6-5 */
1821         pix->pixelformat = V4L2_PIX_FMT_RGB565;
1822         pix->field = V4L2_FIELD_ANY;
1823         pix->bytesperline = pix->width * 2;
1824         pix->sizeimage = pix->bytesperline * pix->height;
1825         pix->colorspace = V4L2_COLORSPACE_JPEG;
1826 
1827         vout->bpp = RGB565_BPP;
1828         vout->fbuf.fmt.width  =  display->panel.timings.x_res;
1829         vout->fbuf.fmt.height =  display->panel.timings.y_res;
1830 
1831         /* Set the data structures for the overlay parameters*/
1832         vout->win.global_alpha = 255;
1833         vout->fbuf.flags = 0;
1834         vout->fbuf.capability = V4L2_FBUF_CAP_LOCAL_ALPHA |
1835                 V4L2_FBUF_CAP_SRC_CHROMAKEY | V4L2_FBUF_CAP_CHROMAKEY;
1836         vout->win.chromakey = 0;
1837 
1838         omap_vout_new_format(pix, &vout->fbuf, &vout->crop, &vout->win);
1839 
1840         hdl = &vout->ctrl_handler;
1841         v4l2_ctrl_handler_init(hdl, 3);
1842         v4l2_ctrl_new_std(hdl, &omap_vout_ctrl_ops,
1843                           V4L2_CID_ROTATE, 0, 270, 90, 0);
1844         v4l2_ctrl_new_std(hdl, &omap_vout_ctrl_ops,
1845                           V4L2_CID_BG_COLOR, 0, 0xffffff, 1, 0);
1846         v4l2_ctrl_new_std(hdl, &omap_vout_ctrl_ops,
1847                           V4L2_CID_VFLIP, 0, 1, 1, 0);
1848         if (hdl->error)
1849                 return hdl->error;
1850 
1851         vout->rotation = 0;
1852         vout->mirror = false;
1853         if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
1854                 vout->vrfb_bpp = 2;
1855 
1856         /* initialize the video_device struct */
1857         vfd = vout->vfd = video_device_alloc();
1858 
1859         if (!vfd) {
1860                 printk(KERN_ERR VOUT_NAME ": could not allocate"
1861                                 " video device struct\n");
1862                 v4l2_ctrl_handler_free(hdl);
1863                 return -ENOMEM;
1864         }
1865         vfd->ctrl_handler = hdl;
1866         vfd->release = video_device_release;
1867         vfd->ioctl_ops = &vout_ioctl_ops;
1868 
1869         strlcpy(vfd->name, VOUT_NAME, sizeof(vfd->name));
1870 
1871         vfd->fops = &omap_vout_fops;
1872         vfd->v4l2_dev = &vout->vid_dev->v4l2_dev;
1873         vfd->vfl_dir = VFL_DIR_TX;
1874         mutex_init(&vout->lock);
1875 
1876         vfd->minor = -1;
1877         return 0;
1878 
1879 }
1880 
1881 /* Setup video buffers */
1882 static int __init omap_vout_setup_video_bufs(struct platform_device *pdev,
1883                 int vid_num)
1884 {
1885         u32 numbuffers;
1886         int ret = 0, i;
1887         struct omapvideo_info *ovid;
1888         struct omap_vout_device *vout;
1889         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1890         struct omap2video_device *vid_dev =
1891                 container_of(v4l2_dev, struct omap2video_device, v4l2_dev);
1892 
1893         vout = vid_dev->vouts[vid_num];
1894         ovid = &vout->vid_info;
1895 
1896         numbuffers = (vid_num == 0) ? video1_numbuffers : video2_numbuffers;
1897         vout->buffer_size = (vid_num == 0) ? video1_bufsize : video2_bufsize;
1898         dev_info(&pdev->dev, "Buffer Size = %d\n", vout->buffer_size);
1899 
1900         for (i = 0; i < numbuffers; i++) {
1901                 vout->buf_virt_addr[i] =
1902                         omap_vout_alloc_buffer(vout->buffer_size,
1903                                         (u32 *) &vout->buf_phy_addr[i]);
1904                 if (!vout->buf_virt_addr[i]) {
1905                         numbuffers = i;
1906                         ret = -ENOMEM;
1907                         goto free_buffers;
1908                 }
1909         }
1910 
1911         vout->cropped_offset = 0;
1912 
1913         if (ovid->rotation_type == VOUT_ROT_VRFB) {
1914                 bool static_vrfb_allocation = (vid_num == 0) ?
1915                         vid1_static_vrfb_alloc : vid2_static_vrfb_alloc;
1916                 ret = omap_vout_setup_vrfb_bufs(pdev, vid_num,
1917                                 static_vrfb_allocation);
1918         }
1919 
1920         return ret;
1921 
1922 free_buffers:
1923         for (i = 0; i < numbuffers; i++) {
1924                 omap_vout_free_buffer(vout->buf_virt_addr[i],
1925                                                 vout->buffer_size);
1926                 vout->buf_virt_addr[i] = 0;
1927                 vout->buf_phy_addr[i] = 0;
1928         }
1929         return ret;
1930 
1931 }
1932 
1933 /* Create video out devices */
1934 static int __init omap_vout_create_video_devices(struct platform_device *pdev)
1935 {
1936         int ret = 0, k;
1937         struct omap_vout_device *vout;
1938         struct video_device *vfd = NULL;
1939         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1940         struct omap2video_device *vid_dev = container_of(v4l2_dev,
1941                         struct omap2video_device, v4l2_dev);
1942 
1943         for (k = 0; k < pdev->num_resources; k++) {
1944 
1945                 vout = kzalloc(sizeof(struct omap_vout_device), GFP_KERNEL);
1946                 if (!vout) {
1947                         dev_err(&pdev->dev, ": could not allocate memory\n");
1948                         return -ENOMEM;
1949                 }
1950 
1951                 vout->vid = k;
1952                 vid_dev->vouts[k] = vout;
1953                 vout->vid_dev = vid_dev;
1954                 /* Select video2 if only 1 overlay is controlled by V4L2 */
1955                 if (pdev->num_resources == 1)
1956                         vout->vid_info.overlays[0] = vid_dev->overlays[k + 2];
1957                 else
1958                         /* Else select video1 and video2 one by one. */
1959                         vout->vid_info.overlays[0] = vid_dev->overlays[k + 1];
1960                 vout->vid_info.num_overlays = 1;
1961                 vout->vid_info.id = k + 1;
1962 
1963                 /* Set VRFB as rotation_type for omap2 and omap3 */
1964                 if (omap_vout_dss_omap24xx() || omap_vout_dss_omap34xx())
1965                         vout->vid_info.rotation_type = VOUT_ROT_VRFB;
1966 
1967                 /* Setup the default configuration for the video devices
1968                  */
1969                 if (omap_vout_setup_video_data(vout) != 0) {
1970                         ret = -ENOMEM;
1971                         goto error;
1972                 }
1973 
1974                 /* Allocate default number of buffers for the video streaming
1975                  * and reserve the VRFB space for rotation
1976                  */
1977                 if (omap_vout_setup_video_bufs(pdev, k) != 0) {
1978                         ret = -ENOMEM;
1979                         goto error1;
1980                 }
1981 
1982                 /* Register the Video device with V4L2
1983                  */
1984                 vfd = vout->vfd;
1985                 if (video_register_device(vfd, VFL_TYPE_GRABBER, -1) < 0) {
1986                         dev_err(&pdev->dev, ": Could not register "
1987                                         "Video for Linux device\n");
1988                         vfd->minor = -1;
1989                         ret = -ENODEV;
1990                         goto error2;
1991                 }
1992                 video_set_drvdata(vfd, vout);
1993 
1994                 dev_info(&pdev->dev, ": registered and initialized"
1995                                 " video device %d\n", vfd->minor);
1996                 if (k == (pdev->num_resources - 1))
1997                         return 0;
1998 
1999                 continue;
2000 error2:
2001                 if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
2002                         omap_vout_release_vrfb(vout);
2003                 omap_vout_free_buffers(vout);
2004 error1:
2005                 video_device_release(vfd);
2006 error:
2007                 kfree(vout);
2008                 return ret;
2009         }
2010 
2011         return -ENODEV;
2012 }
2013 /* Driver functions */
2014 static void omap_vout_cleanup_device(struct omap_vout_device *vout)
2015 {
2016         struct video_device *vfd;
2017         struct omapvideo_info *ovid;
2018 
2019         if (!vout)
2020                 return;
2021 
2022         vfd = vout->vfd;
2023         ovid = &vout->vid_info;
2024         if (vfd) {
2025                 if (!video_is_registered(vfd)) {
2026                         /*
2027                          * The device was never registered, so release the
2028                          * video_device struct directly.
2029                          */
2030                         video_device_release(vfd);
2031                 } else {
2032                         /*
2033                          * The unregister function will release the video_device
2034                          * struct as well as unregistering it.
2035                          */
2036                         video_unregister_device(vfd);
2037                 }
2038         }
2039         v4l2_ctrl_handler_free(&vout->ctrl_handler);
2040         if (ovid->rotation_type == VOUT_ROT_VRFB) {
2041                 omap_vout_release_vrfb(vout);
2042                 /* Free the VRFB buffer if allocated
2043                  * init time
2044                  */
2045                 if (vout->vrfb_static_allocation)
2046                         omap_vout_free_vrfb_buffers(vout);
2047         }
2048         omap_vout_free_buffers(vout);
2049 
2050         kfree(vout);
2051 }
2052 
2053 static int omap_vout_remove(struct platform_device *pdev)
2054 {
2055         int k;
2056         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2057         struct omap2video_device *vid_dev = container_of(v4l2_dev, struct
2058                         omap2video_device, v4l2_dev);
2059 
2060         v4l2_device_unregister(v4l2_dev);
2061         for (k = 0; k < pdev->num_resources; k++)
2062                 omap_vout_cleanup_device(vid_dev->vouts[k]);
2063 
2064         for (k = 0; k < vid_dev->num_displays; k++) {
2065                 if (vid_dev->displays[k]->state != OMAP_DSS_DISPLAY_DISABLED)
2066                         vid_dev->displays[k]->driver->disable(vid_dev->displays[k]);
2067 
2068                 omap_dss_put_device(vid_dev->displays[k]);
2069         }
2070         kfree(vid_dev);
2071         return 0;
2072 }
2073 
2074 static int __init omap_vout_probe(struct platform_device *pdev)
2075 {
2076         int ret = 0, i;
2077         struct omap_overlay *ovl;
2078         struct omap_dss_device *dssdev = NULL;
2079         struct omap_dss_device *def_display;
2080         struct omap2video_device *vid_dev = NULL;
2081 
2082         if (omapdss_is_initialized() == false)
2083                 return -EPROBE_DEFER;
2084 
2085         ret = omapdss_compat_init();
2086         if (ret) {
2087                 dev_err(&pdev->dev, "failed to init dss\n");
2088                 return ret;
2089         }
2090 
2091         if (pdev->num_resources == 0) {
2092                 dev_err(&pdev->dev, "probed for an unknown device\n");
2093                 ret = -ENODEV;
2094                 goto err_dss_init;
2095         }
2096 
2097         vid_dev = kzalloc(sizeof(struct omap2video_device), GFP_KERNEL);
2098         if (vid_dev == NULL) {
2099                 ret = -ENOMEM;
2100                 goto err_dss_init;
2101         }
2102 
2103         vid_dev->num_displays = 0;
2104         for_each_dss_dev(dssdev) {
2105                 omap_dss_get_device(dssdev);
2106 
2107                 if (!dssdev->driver) {
2108                         dev_warn(&pdev->dev, "no driver for display: %s\n",
2109                                         dssdev->name);
2110                         omap_dss_put_device(dssdev);
2111                         continue;
2112                 }
2113 
2114                 vid_dev->displays[vid_dev->num_displays++] = dssdev;
2115         }
2116 
2117         if (vid_dev->num_displays == 0) {
2118                 dev_err(&pdev->dev, "no displays\n");
2119                 ret = -EINVAL;
2120                 goto probe_err0;
2121         }
2122 
2123         vid_dev->num_overlays = omap_dss_get_num_overlays();
2124         for (i = 0; i < vid_dev->num_overlays; i++)
2125                 vid_dev->overlays[i] = omap_dss_get_overlay(i);
2126 
2127         vid_dev->num_managers = omap_dss_get_num_overlay_managers();
2128         for (i = 0; i < vid_dev->num_managers; i++)
2129                 vid_dev->managers[i] = omap_dss_get_overlay_manager(i);
2130 
2131         /* Get the Video1 overlay and video2 overlay.
2132          * Setup the Display attached to that overlays
2133          */
2134         for (i = 1; i < vid_dev->num_overlays; i++) {
2135                 ovl = omap_dss_get_overlay(i);
2136                 dssdev = ovl->get_device(ovl);
2137 
2138                 if (dssdev) {
2139                         def_display = dssdev;
2140                 } else {
2141                         dev_warn(&pdev->dev, "cannot find display\n");
2142                         def_display = NULL;
2143                 }
2144                 if (def_display) {
2145                         struct omap_dss_driver *dssdrv = def_display->driver;
2146 
2147                         ret = dssdrv->enable(def_display);
2148                         if (ret) {
2149                                 /* Here we are not considering a error
2150                                  *  as display may be enabled by frame
2151                                  *  buffer driver
2152                                  */
2153                                 dev_warn(&pdev->dev,
2154                                         "'%s' Display already enabled\n",
2155                                         def_display->name);
2156                         }
2157                 }
2158         }
2159 
2160         if (v4l2_device_register(&pdev->dev, &vid_dev->v4l2_dev) < 0) {
2161                 dev_err(&pdev->dev, "v4l2_device_register failed\n");
2162                 ret = -ENODEV;
2163                 goto probe_err1;
2164         }
2165 
2166         ret = omap_vout_create_video_devices(pdev);
2167         if (ret)
2168                 goto probe_err2;
2169 
2170         for (i = 0; i < vid_dev->num_displays; i++) {
2171                 struct omap_dss_device *display = vid_dev->displays[i];
2172 
2173                 if (display->driver->update)
2174                         display->driver->update(display, 0, 0,
2175                                         display->panel.timings.x_res,
2176                                         display->panel.timings.y_res);
2177         }
2178         return 0;
2179 
2180 probe_err2:
2181         v4l2_device_unregister(&vid_dev->v4l2_dev);
2182 probe_err1:
2183         for (i = 1; i < vid_dev->num_overlays; i++) {
2184                 def_display = NULL;
2185                 ovl = omap_dss_get_overlay(i);
2186                 dssdev = ovl->get_device(ovl);
2187 
2188                 if (dssdev)
2189                         def_display = dssdev;
2190 
2191                 if (def_display && def_display->driver)
2192                         def_display->driver->disable(def_display);
2193         }
2194 probe_err0:
2195         kfree(vid_dev);
2196 err_dss_init:
2197         omapdss_compat_uninit();
2198         return ret;
2199 }
2200 
2201 static struct platform_driver omap_vout_driver = {
2202         .driver = {
2203                 .name = VOUT_NAME,
2204         },
2205         .remove = omap_vout_remove,
2206 };
2207 
2208 static int __init omap_vout_init(void)
2209 {
2210         if (platform_driver_probe(&omap_vout_driver, omap_vout_probe) != 0) {
2211                 printk(KERN_ERR VOUT_NAME ":Could not register Video driver\n");
2212                 return -EINVAL;
2213         }
2214         return 0;
2215 }
2216 
2217 static void omap_vout_cleanup(void)
2218 {
2219         platform_driver_unregister(&omap_vout_driver);
2220 }
2221 
2222 late_initcall(omap_vout_init);
2223 module_exit(omap_vout_cleanup);
2224 

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