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 */
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>
43 #include <media/videobuf-dma-contig.h>
44 #include <media/v4l2-device.h>
45 #include <media/v4l2-ioctl.h>
47 #include <video/omapvrfb.h>
48 #include <video/omapdss.h>
50 #include "omap_voutlib.h"
51 #include "omap_voutdef.h"
52 #include "omap_vout_vrfb.h"
54 MODULE_AUTHOR("Texas Instruments");
55 MODULE_DESCRIPTION("OMAP Video for Linux Video out driver");
56 MODULE_LICENSE("GPL");
58 /* Driver Configuration macros */
59 #define VOUT_NAME "omap_vout"
61 enum omap_vout_channels {
62 OMAP_VIDEO1,
63 OMAP_VIDEO2,
64 };
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;
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.");
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.");
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");
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");
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");
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");
101 module_param(debug, bool, S_IRUGO);
102 MODULE_PARM_DESC(debug, "Debug level (0-1)");
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 };
145 #define NUM_OUTPUT_FORMATS (ARRAY_SIZE(omap_formats))
147 /*
148 * Try format
149 */
150 static int omap_vout_try_format(struct v4l2_pix_format *pix)
151 {
152 int ifmt, bpp = 0;
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);
158 for (ifmt = 0; ifmt < NUM_OUTPUT_FORMATS; ifmt++) {
159 if (pix->pixelformat == omap_formats[ifmt].pixelformat)
160 break;
161 }
163 if (ifmt == NUM_OUTPUT_FORMATS)
164 ifmt = 0;
166 pix->pixelformat = omap_formats[ifmt].pixelformat;
167 pix->field = V4L2_FIELD_ANY;
168 pix->priv = 0;
170 switch (pix->pixelformat) {
171 case V4L2_PIX_FMT_YUYV:
172 case V4L2_PIX_FMT_UYVY:
173 default:
174 pix->colorspace = V4L2_COLORSPACE_JPEG;
175 bpp = YUYV_BPP;
176 break;
177 case V4L2_PIX_FMT_RGB565:
178 case V4L2_PIX_FMT_RGB565X:
179 pix->colorspace = V4L2_COLORSPACE_SRGB;
180 bpp = RGB565_BPP;
181 break;
182 case V4L2_PIX_FMT_RGB24:
183 pix->colorspace = V4L2_COLORSPACE_SRGB;
184 bpp = RGB24_BPP;
185 break;
186 case V4L2_PIX_FMT_RGB32:
187 case V4L2_PIX_FMT_BGR32:
188 pix->colorspace = V4L2_COLORSPACE_SRGB;
189 bpp = RGB32_BPP;
190 break;
191 }
192 pix->bytesperline = pix->width * bpp;
193 pix->sizeimage = pix->bytesperline * pix->height;
195 return bpp;
196 }
198 /*
199 * omap_vout_uservirt_to_phys: This inline function is used to convert user
200 * space virtual address to physical address.
201 */
202 static u32 omap_vout_uservirt_to_phys(u32 virtp)
203 {
204 unsigned long physp = 0;
205 struct vm_area_struct *vma;
206 struct mm_struct *mm = current->mm;
208 vma = find_vma(mm, virtp);
209 /* For kernel direct-mapped memory, take the easy way */
210 if (virtp >= PAGE_OFFSET) {
211 physp = virt_to_phys((void *) virtp);
212 } else if (vma && (vma->vm_flags & VM_IO) && vma->vm_pgoff) {
213 /* this will catch, kernel-allocated, mmaped-to-usermode
214 addresses */
215 physp = (vma->vm_pgoff << PAGE_SHIFT) + (virtp - vma->vm_start);
216 } else {
217 /* otherwise, use get_user_pages() for general userland pages */
218 int res, nr_pages = 1;
219 struct page *pages;
220 down_read(¤t->mm->mmap_sem);
222 res = get_user_pages(current, current->mm, virtp, nr_pages, 1,
223 0, &pages, NULL);
224 up_read(¤t->mm->mmap_sem);
226 if (res == nr_pages) {
227 physp = __pa(page_address(&pages[0]) +
228 (virtp & ~PAGE_MASK));
229 } else {
230 printk(KERN_WARNING VOUT_NAME
231 "get_user_pages failed\n");
232 return 0;
233 }
234 }
236 return physp;
237 }
239 /*
240 * Free the V4L2 buffers
241 */
242 void omap_vout_free_buffers(struct omap_vout_device *vout)
243 {
244 int i, numbuffers;
246 /* Allocate memory for the buffers */
247 numbuffers = (vout->vid) ? video2_numbuffers : video1_numbuffers;
248 vout->buffer_size = (vout->vid) ? video2_bufsize : video1_bufsize;
250 for (i = 0; i < numbuffers; i++) {
251 omap_vout_free_buffer(vout->buf_virt_addr[i],
252 vout->buffer_size);
253 vout->buf_phy_addr[i] = 0;
254 vout->buf_virt_addr[i] = 0;
255 }
256 }
258 /*
259 * Convert V4L2 rotation to DSS rotation
260 * V4L2 understand 0, 90, 180, 270.
261 * Convert to 0, 1, 2 and 3 respectively for DSS
262 */
263 static int v4l2_rot_to_dss_rot(int v4l2_rotation,
264 enum dss_rotation *rotation, bool mirror)
265 {
266 int ret = 0;
268 switch (v4l2_rotation) {
269 case 90:
270 *rotation = dss_rotation_90_degree;
271 break;
272 case 180:
273 *rotation = dss_rotation_180_degree;
274 break;
275 case 270:
276 *rotation = dss_rotation_270_degree;
277 break;
278 case 0:
279 *rotation = dss_rotation_0_degree;
280 break;
281 default:
282 ret = -EINVAL;
283 }
284 return ret;
285 }
287 static int omap_vout_calculate_offset(struct omap_vout_device *vout)
288 {
289 struct omapvideo_info *ovid;
290 struct v4l2_rect *crop = &vout->crop;
291 struct v4l2_pix_format *pix = &vout->pix;
292 int *cropped_offset = &vout->cropped_offset;
293 int ps = 2, line_length = 0;
295 ovid = &vout->vid_info;
297 if (ovid->rotation_type == VOUT_ROT_VRFB) {
298 omap_vout_calculate_vrfb_offset(vout);
299 } else {
300 vout->line_length = line_length = pix->width;
302 if (V4L2_PIX_FMT_YUYV == pix->pixelformat ||
303 V4L2_PIX_FMT_UYVY == pix->pixelformat)
304 ps = 2;
305 else if (V4L2_PIX_FMT_RGB32 == pix->pixelformat)
306 ps = 4;
307 else if (V4L2_PIX_FMT_RGB24 == pix->pixelformat)
308 ps = 3;
310 vout->ps = ps;
312 *cropped_offset = (line_length * ps) *
313 crop->top + crop->left * ps;
314 }
316 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "%s Offset:%x\n",
317 __func__, vout->cropped_offset);
319 return 0;
320 }
322 /*
323 * Convert V4L2 pixel format to DSS pixel format
324 */
325 static int video_mode_to_dss_mode(struct omap_vout_device *vout)
326 {
327 struct omap_overlay *ovl;
328 struct omapvideo_info *ovid;
329 struct v4l2_pix_format *pix = &vout->pix;
330 enum omap_color_mode mode;
332 ovid = &vout->vid_info;
333 ovl = ovid->overlays[0];
335 switch (pix->pixelformat) {
336 case 0:
337 break;
338 case V4L2_PIX_FMT_YUYV:
339 mode = OMAP_DSS_COLOR_YUV2;
340 break;
341 case V4L2_PIX_FMT_UYVY:
342 mode = OMAP_DSS_COLOR_UYVY;
343 break;
344 case V4L2_PIX_FMT_RGB565:
345 mode = OMAP_DSS_COLOR_RGB16;
346 break;
347 case V4L2_PIX_FMT_RGB24:
348 mode = OMAP_DSS_COLOR_RGB24P;
349 break;
350 case V4L2_PIX_FMT_RGB32:
351 mode = (ovl->id == OMAP_DSS_VIDEO1) ?
352 OMAP_DSS_COLOR_RGB24U : OMAP_DSS_COLOR_ARGB32;
353 break;
354 case V4L2_PIX_FMT_BGR32:
355 mode = OMAP_DSS_COLOR_RGBX32;
356 break;
357 default:
358 mode = -EINVAL;
359 }
360 return mode;
361 }
363 /*
364 * Setup the overlay
365 */
366 static int omapvid_setup_overlay(struct omap_vout_device *vout,
367 struct omap_overlay *ovl, int posx, int posy, int outw,
368 int outh, u32 addr)
369 {
370 int ret = 0;
371 struct omap_overlay_info info;
372 int cropheight, cropwidth, pixheight, pixwidth;
374 if ((ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0 &&
375 (outw != vout->pix.width || outh != vout->pix.height)) {
376 ret = -EINVAL;
377 goto setup_ovl_err;
378 }
380 vout->dss_mode = video_mode_to_dss_mode(vout);
381 if (vout->dss_mode == -EINVAL) {
382 ret = -EINVAL;
383 goto setup_ovl_err;
384 }
386 /* Setup the input plane parameters according to
387 * rotation value selected.
388 */
389 if (is_rotation_90_or_270(vout)) {
390 cropheight = vout->crop.width;
391 cropwidth = vout->crop.height;
392 pixheight = vout->pix.width;
393 pixwidth = vout->pix.height;
394 } else {
395 cropheight = vout->crop.height;
396 cropwidth = vout->crop.width;
397 pixheight = vout->pix.height;
398 pixwidth = vout->pix.width;
399 }
401 ovl->get_overlay_info(ovl, &info);
402 info.paddr = addr;
403 info.width = cropwidth;
404 info.height = cropheight;
405 info.color_mode = vout->dss_mode;
406 info.mirror = vout->mirror;
407 info.pos_x = posx;
408 info.pos_y = posy;
409 info.out_width = outw;
410 info.out_height = outh;
411 info.global_alpha = vout->win.global_alpha;
412 if (!is_rotation_enabled(vout)) {
413 info.rotation = 0;
414 info.rotation_type = OMAP_DSS_ROT_DMA;
415 info.screen_width = pixwidth;
416 } else {
417 info.rotation = vout->rotation;
418 info.rotation_type = OMAP_DSS_ROT_VRFB;
419 info.screen_width = 2048;
420 }
422 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
423 "%s enable=%d addr=%x width=%d\n height=%d color_mode=%d\n"
424 "rotation=%d mirror=%d posx=%d posy=%d out_width = %d \n"
425 "out_height=%d rotation_type=%d screen_width=%d\n",
426 __func__, ovl->is_enabled(ovl), info.paddr, info.width, info.height,
427 info.color_mode, info.rotation, info.mirror, info.pos_x,
428 info.pos_y, info.out_width, info.out_height, info.rotation_type,
429 info.screen_width);
431 ret = ovl->set_overlay_info(ovl, &info);
432 if (ret)
433 goto setup_ovl_err;
435 return 0;
437 setup_ovl_err:
438 v4l2_warn(&vout->vid_dev->v4l2_dev, "setup_overlay failed\n");
439 return ret;
440 }
442 /*
443 * Initialize the overlay structure
444 */
445 static int omapvid_init(struct omap_vout_device *vout, u32 addr)
446 {
447 int ret = 0, i;
448 struct v4l2_window *win;
449 struct omap_overlay *ovl;
450 int posx, posy, outw, outh, temp;
451 struct omap_video_timings *timing;
452 struct omapvideo_info *ovid = &vout->vid_info;
454 win = &vout->win;
455 for (i = 0; i < ovid->num_overlays; i++) {
456 struct omap_dss_device *dssdev;
458 ovl = ovid->overlays[i];
459 dssdev = ovl->get_device(ovl);
461 if (!dssdev)
462 return -EINVAL;
464 timing = &dssdev->panel.timings;
466 outw = win->w.width;
467 outh = win->w.height;
468 switch (vout->rotation) {
469 case dss_rotation_90_degree:
470 /* Invert the height and width for 90
471 * and 270 degree rotation
472 */
473 temp = outw;
474 outw = outh;
475 outh = temp;
476 posy = (timing->y_res - win->w.width) - win->w.left;
477 posx = win->w.top;
478 break;
480 case dss_rotation_180_degree:
481 posx = (timing->x_res - win->w.width) - win->w.left;
482 posy = (timing->y_res - win->w.height) - win->w.top;
483 break;
485 case dss_rotation_270_degree:
486 temp = outw;
487 outw = outh;
488 outh = temp;
489 posy = win->w.left;
490 posx = (timing->x_res - win->w.height) - win->w.top;
491 break;
493 default:
494 posx = win->w.left;
495 posy = win->w.top;
496 break;
497 }
499 ret = omapvid_setup_overlay(vout, ovl, posx, posy,
500 outw, outh, addr);
501 if (ret)
502 goto omapvid_init_err;
503 }
504 return 0;
506 omapvid_init_err:
507 v4l2_warn(&vout->vid_dev->v4l2_dev, "apply_changes failed\n");
508 return ret;
509 }
511 /*
512 * Apply the changes set the go bit of DSS
513 */
514 static int omapvid_apply_changes(struct omap_vout_device *vout)
515 {
516 int i;
517 struct omap_overlay *ovl;
518 struct omapvideo_info *ovid = &vout->vid_info;
520 for (i = 0; i < ovid->num_overlays; i++) {
521 struct omap_dss_device *dssdev;
523 ovl = ovid->overlays[i];
524 dssdev = ovl->get_device(ovl);
525 if (!dssdev)
526 return -EINVAL;
527 ovl->manager->apply(ovl->manager);
528 }
530 return 0;
531 }
533 static int omapvid_handle_interlace_display(struct omap_vout_device *vout,
534 unsigned int irqstatus, struct timeval timevalue)
535 {
536 u32 fid;
538 if (vout->first_int) {
539 vout->first_int = 0;
540 goto err;
541 }
543 if (irqstatus & DISPC_IRQ_EVSYNC_ODD)
544 fid = 1;
545 else if (irqstatus & DISPC_IRQ_EVSYNC_EVEN)
546 fid = 0;
547 else
548 goto err;
550 vout->field_id ^= 1;
551 if (fid != vout->field_id) {
552 if (fid == 0)
553 vout->field_id = fid;
554 } else if (0 == fid) {
555 if (vout->cur_frm == vout->next_frm)
556 goto err;
558 vout->cur_frm->ts = timevalue;
559 vout->cur_frm->state = VIDEOBUF_DONE;
560 wake_up_interruptible(&vout->cur_frm->done);
561 vout->cur_frm = vout->next_frm;
562 } else {
563 if (list_empty(&vout->dma_queue) ||
564 (vout->cur_frm != vout->next_frm))
565 goto err;
566 }
568 return vout->field_id;
569 err:
570 return 0;
571 }
573 static void omap_vout_isr(void *arg, unsigned int irqstatus)
574 {
575 int ret, fid, mgr_id;
576 u32 addr, irq;
577 struct omap_overlay *ovl;
578 struct timeval timevalue;
579 struct omapvideo_info *ovid;
580 struct omap_dss_device *cur_display;
581 struct omap_vout_device *vout = (struct omap_vout_device *)arg;
583 if (!vout->streaming)
584 return;
586 ovid = &vout->vid_info;
587 ovl = ovid->overlays[0];
589 mgr_id = ovl->manager->id;
591 /* get the display device attached to the overlay */
592 cur_display = ovl->get_device(ovl);
594 if (!cur_display)
595 return;
597 spin_lock(&vout->vbq_lock);
598 do_gettimeofday(&timevalue);
600 switch (cur_display->type) {
601 case OMAP_DISPLAY_TYPE_DSI:
602 case OMAP_DISPLAY_TYPE_DPI:
603 if (mgr_id == OMAP_DSS_CHANNEL_LCD)
604 irq = DISPC_IRQ_VSYNC;
605 else if (mgr_id == OMAP_DSS_CHANNEL_LCD2)
606 irq = DISPC_IRQ_VSYNC2;
607 else
608 goto vout_isr_err;
610 if (!(irqstatus & irq))
611 goto vout_isr_err;
612 break;
613 case OMAP_DISPLAY_TYPE_VENC:
614 fid = omapvid_handle_interlace_display(vout, irqstatus,
615 timevalue);
616 if (!fid)
617 goto vout_isr_err;
618 break;
619 case OMAP_DISPLAY_TYPE_HDMI:
620 if (!(irqstatus & DISPC_IRQ_EVSYNC_EVEN))
621 goto vout_isr_err;
622 break;
623 default:
624 goto vout_isr_err;
625 }
627 if (!vout->first_int && (vout->cur_frm != vout->next_frm)) {
628 vout->cur_frm->ts = timevalue;
629 vout->cur_frm->state = VIDEOBUF_DONE;
630 wake_up_interruptible(&vout->cur_frm->done);
631 vout->cur_frm = vout->next_frm;
632 }
634 vout->first_int = 0;
635 if (list_empty(&vout->dma_queue))
636 goto vout_isr_err;
638 vout->next_frm = list_entry(vout->dma_queue.next,
639 struct videobuf_buffer, queue);
640 list_del(&vout->next_frm->queue);
642 vout->next_frm->state = VIDEOBUF_ACTIVE;
644 addr = (unsigned long) vout->queued_buf_addr[vout->next_frm->i]
645 + vout->cropped_offset;
647 /* First save the configuration in ovelray structure */
648 ret = omapvid_init(vout, addr);
649 if (ret)
650 printk(KERN_ERR VOUT_NAME
651 "failed to set overlay info\n");
652 /* Enable the pipeline and set the Go bit */
653 ret = omapvid_apply_changes(vout);
654 if (ret)
655 printk(KERN_ERR VOUT_NAME "failed to change mode\n");
657 vout_isr_err:
658 spin_unlock(&vout->vbq_lock);
659 }
661 /* Video buffer call backs */
663 /*
664 * Buffer setup function is called by videobuf layer when REQBUF ioctl is
665 * called. This is used to setup buffers and return size and count of
666 * buffers allocated. After the call to this buffer, videobuf layer will
667 * setup buffer queue depending on the size and count of buffers
668 */
669 static int omap_vout_buffer_setup(struct videobuf_queue *q, unsigned int *count,
670 unsigned int *size)
671 {
672 int startindex = 0, i, j;
673 u32 phy_addr = 0, virt_addr = 0;
674 struct omap_vout_device *vout = q->priv_data;
675 struct omapvideo_info *ovid = &vout->vid_info;
676 int vid_max_buf_size;
678 if (!vout)
679 return -EINVAL;
681 vid_max_buf_size = vout->vid == OMAP_VIDEO1 ? video1_bufsize :
682 video2_bufsize;
684 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != q->type)
685 return -EINVAL;
687 startindex = (vout->vid == OMAP_VIDEO1) ?
688 video1_numbuffers : video2_numbuffers;
689 if (V4L2_MEMORY_MMAP == vout->memory && *count < startindex)
690 *count = startindex;
692 if (ovid->rotation_type == VOUT_ROT_VRFB) {
693 if (omap_vout_vrfb_buffer_setup(vout, count, startindex))
694 return -ENOMEM;
695 }
697 if (V4L2_MEMORY_MMAP != vout->memory)
698 return 0;
700 /* Now allocated the V4L2 buffers */
701 *size = PAGE_ALIGN(vout->pix.width * vout->pix.height * vout->bpp);
702 startindex = (vout->vid == OMAP_VIDEO1) ?
703 video1_numbuffers : video2_numbuffers;
705 /* Check the size of the buffer */
706 if (*size > vid_max_buf_size) {
707 v4l2_err(&vout->vid_dev->v4l2_dev,
708 "buffer allocation mismatch [%u] [%u]\n",
709 *size, vout->buffer_size);
710 return -ENOMEM;
711 }
713 for (i = startindex; i < *count; i++) {
714 vout->buffer_size = *size;
716 virt_addr = omap_vout_alloc_buffer(vout->buffer_size,
717 &phy_addr);
718 if (!virt_addr) {
719 if (ovid->rotation_type == VOUT_ROT_NONE) {
720 break;
721 } else {
722 if (!is_rotation_enabled(vout))
723 break;
724 /* Free the VRFB buffers if no space for V4L2 buffers */
725 for (j = i; j < *count; j++) {
726 omap_vout_free_buffer(
727 vout->smsshado_virt_addr[j],
728 vout->smsshado_size);
729 vout->smsshado_virt_addr[j] = 0;
730 vout->smsshado_phy_addr[j] = 0;
731 }
732 }
733 }
734 vout->buf_virt_addr[i] = virt_addr;
735 vout->buf_phy_addr[i] = phy_addr;
736 }
737 *count = vout->buffer_allocated = i;
739 return 0;
740 }
742 /*
743 * Free the V4L2 buffers additionally allocated than default
744 * number of buffers
745 */
746 static void omap_vout_free_extra_buffers(struct omap_vout_device *vout)
747 {
748 int num_buffers = 0, i;
750 num_buffers = (vout->vid == OMAP_VIDEO1) ?
751 video1_numbuffers : video2_numbuffers;
753 for (i = num_buffers; i < vout->buffer_allocated; i++) {
754 if (vout->buf_virt_addr[i])
755 omap_vout_free_buffer(vout->buf_virt_addr[i],
756 vout->buffer_size);
758 vout->buf_virt_addr[i] = 0;
759 vout->buf_phy_addr[i] = 0;
760 }
761 vout->buffer_allocated = num_buffers;
762 }
764 /*
765 * This function will be called when VIDIOC_QBUF ioctl is called.
766 * It prepare buffers before give out for the display. This function
767 * converts user space virtual address into physical address if userptr memory
768 * exchange mechanism is used. If rotation is enabled, it copies entire
769 * buffer into VRFB memory space before giving it to the DSS.
770 */
771 static int omap_vout_buffer_prepare(struct videobuf_queue *q,
772 struct videobuf_buffer *vb,
773 enum v4l2_field field)
774 {
775 struct omap_vout_device *vout = q->priv_data;
776 struct omapvideo_info *ovid = &vout->vid_info;
778 if (VIDEOBUF_NEEDS_INIT == vb->state) {
779 vb->width = vout->pix.width;
780 vb->height = vout->pix.height;
781 vb->size = vb->width * vb->height * vout->bpp;
782 vb->field = field;
783 }
784 vb->state = VIDEOBUF_PREPARED;
785 /* if user pointer memory mechanism is used, get the physical
786 * address of the buffer
787 */
788 if (V4L2_MEMORY_USERPTR == vb->memory) {
789 if (0 == vb->baddr)
790 return -EINVAL;
791 /* Physical address */
792 vout->queued_buf_addr[vb->i] = (u8 *)
793 omap_vout_uservirt_to_phys(vb->baddr);
794 } else {
795 u32 addr, dma_addr;
796 unsigned long size;
798 addr = (unsigned long) vout->buf_virt_addr[vb->i];
799 size = (unsigned long) vb->size;
801 dma_addr = dma_map_single(vout->vid_dev->v4l2_dev.dev, (void *) addr,
802 size, DMA_TO_DEVICE);
803 if (dma_mapping_error(vout->vid_dev->v4l2_dev.dev, dma_addr))
804 v4l2_err(&vout->vid_dev->v4l2_dev, "dma_map_single failed\n");
806 vout->queued_buf_addr[vb->i] = (u8 *)vout->buf_phy_addr[vb->i];
807 }
809 if (ovid->rotation_type == VOUT_ROT_VRFB)
810 return omap_vout_prepare_vrfb(vout, vb);
811 else
812 return 0;
813 }
815 /*
816 * Buffer queue function will be called from the videobuf layer when _QBUF
817 * ioctl is called. It is used to enqueue buffer, which is ready to be
818 * displayed.
819 */
820 static void omap_vout_buffer_queue(struct videobuf_queue *q,
821 struct videobuf_buffer *vb)
822 {
823 struct omap_vout_device *vout = q->priv_data;
825 /* Driver is also maintainig a queue. So enqueue buffer in the driver
826 * queue */
827 list_add_tail(&vb->queue, &vout->dma_queue);
829 vb->state = VIDEOBUF_QUEUED;
830 }
832 /*
833 * Buffer release function is called from videobuf layer to release buffer
834 * which are already allocated
835 */
836 static void omap_vout_buffer_release(struct videobuf_queue *q,
837 struct videobuf_buffer *vb)
838 {
839 struct omap_vout_device *vout = q->priv_data;
841 vb->state = VIDEOBUF_NEEDS_INIT;
843 if (V4L2_MEMORY_MMAP != vout->memory)
844 return;
845 }
847 /*
848 * File operations
849 */
850 static unsigned int omap_vout_poll(struct file *file,
851 struct poll_table_struct *wait)
852 {
853 struct omap_vout_device *vout = file->private_data;
854 struct videobuf_queue *q = &vout->vbq;
856 return videobuf_poll_stream(file, q, wait);
857 }
859 static void omap_vout_vm_open(struct vm_area_struct *vma)
860 {
861 struct omap_vout_device *vout = vma->vm_private_data;
863 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
864 "vm_open [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
865 vout->mmap_count++;
866 }
868 static void omap_vout_vm_close(struct vm_area_struct *vma)
869 {
870 struct omap_vout_device *vout = vma->vm_private_data;
872 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
873 "vm_close [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
874 vout->mmap_count--;
875 }
877 static struct vm_operations_struct omap_vout_vm_ops = {
878 .open = omap_vout_vm_open,
879 .close = omap_vout_vm_close,
880 };
882 static int omap_vout_mmap(struct file *file, struct vm_area_struct *vma)
883 {
884 int i;
885 void *pos;
886 unsigned long start = vma->vm_start;
887 unsigned long size = (vma->vm_end - vma->vm_start);
888 struct omap_vout_device *vout = file->private_data;
889 struct videobuf_queue *q = &vout->vbq;
891 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
892 " %s pgoff=0x%lx, start=0x%lx, end=0x%lx\n", __func__,
893 vma->vm_pgoff, vma->vm_start, vma->vm_end);
895 /* look for the buffer to map */
896 for (i = 0; i < VIDEO_MAX_FRAME; i++) {
897 if (NULL == q->bufs[i])
898 continue;
899 if (V4L2_MEMORY_MMAP != q->bufs[i]->memory)
900 continue;
901 if (q->bufs[i]->boff == (vma->vm_pgoff << PAGE_SHIFT))
902 break;
903 }
905 if (VIDEO_MAX_FRAME == i) {
906 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
907 "offset invalid [offset=0x%lx]\n",
908 (vma->vm_pgoff << PAGE_SHIFT));
909 return -EINVAL;
910 }
911 /* Check the size of the buffer */
912 if (size > vout->buffer_size) {
913 v4l2_err(&vout->vid_dev->v4l2_dev,
914 "insufficient memory [%lu] [%u]\n",
915 size, vout->buffer_size);
916 return -ENOMEM;
917 }
919 q->bufs[i]->baddr = vma->vm_start;
921 vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
922 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
923 vma->vm_ops = &omap_vout_vm_ops;
924 vma->vm_private_data = (void *) vout;
925 pos = (void *)vout->buf_virt_addr[i];
926 vma->vm_pgoff = virt_to_phys((void *)pos) >> PAGE_SHIFT;
927 while (size > 0) {
928 unsigned long pfn;
929 pfn = virt_to_phys((void *) pos) >> PAGE_SHIFT;
930 if (remap_pfn_range(vma, start, pfn, PAGE_SIZE, PAGE_SHARED))
931 return -EAGAIN;
932 start += PAGE_SIZE;
933 pos += PAGE_SIZE;
934 size -= PAGE_SIZE;
935 }
936 vout->mmap_count++;
937 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
939 return 0;
940 }
942 static int omap_vout_release(struct file *file)
943 {
944 unsigned int ret, i;
945 struct videobuf_queue *q;
946 struct omapvideo_info *ovid;
947 struct omap_vout_device *vout = file->private_data;
949 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
950 ovid = &vout->vid_info;
952 if (!vout)
953 return 0;
955 q = &vout->vbq;
956 /* Disable all the overlay managers connected with this interface */
957 for (i = 0; i < ovid->num_overlays; i++) {
958 struct omap_overlay *ovl = ovid->overlays[i];
959 struct omap_dss_device *dssdev = ovl->get_device(ovl);
961 if (dssdev)
962 ovl->disable(ovl);
963 }
964 /* Turn off the pipeline */
965 ret = omapvid_apply_changes(vout);
966 if (ret)
967 v4l2_warn(&vout->vid_dev->v4l2_dev,
968 "Unable to apply changes\n");
970 /* Free all buffers */
971 omap_vout_free_extra_buffers(vout);
973 /* Free the VRFB buffers only if they are allocated
974 * during reqbufs. Don't free if init time allocated
975 */
976 if (ovid->rotation_type == VOUT_ROT_VRFB) {
977 if (!vout->vrfb_static_allocation)
978 omap_vout_free_vrfb_buffers(vout);
979 }
980 videobuf_mmap_free(q);
982 /* Even if apply changes fails we should continue
983 freeing allocated memory */
984 if (vout->streaming) {
985 u32 mask = 0;
987 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN |
988 DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_VSYNC2;
989 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
990 vout->streaming = 0;
992 videobuf_streamoff(q);
993 videobuf_queue_cancel(q);
994 }
996 if (vout->mmap_count != 0)
997 vout->mmap_count = 0;
999 vout->opened -= 1;
1000 file->private_data = NULL;
1002 if (vout->buffer_allocated)
1003 videobuf_mmap_free(q);
1005 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1006 return ret;
1007 }
1009 static int omap_vout_open(struct file *file)
1010 {
1011 struct videobuf_queue *q;
1012 struct omap_vout_device *vout = NULL;
1014 vout = video_drvdata(file);
1015 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
1017 if (vout == NULL)
1018 return -ENODEV;
1020 /* for now, we only support single open */
1021 if (vout->opened)
1022 return -EBUSY;
1024 vout->opened += 1;
1026 file->private_data = vout;
1027 vout->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1029 q = &vout->vbq;
1030 video_vbq_ops.buf_setup = omap_vout_buffer_setup;
1031 video_vbq_ops.buf_prepare = omap_vout_buffer_prepare;
1032 video_vbq_ops.buf_release = omap_vout_buffer_release;
1033 video_vbq_ops.buf_queue = omap_vout_buffer_queue;
1034 spin_lock_init(&vout->vbq_lock);
1036 videobuf_queue_dma_contig_init(q, &video_vbq_ops, q->dev,
1037 &vout->vbq_lock, vout->type, V4L2_FIELD_NONE,
1038 sizeof(struct videobuf_buffer), vout, NULL);
1040 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1041 return 0;
1042 }
1044 /*
1045 * V4L2 ioctls
1046 */
1047 static int vidioc_querycap(struct file *file, void *fh,
1048 struct v4l2_capability *cap)
1049 {
1050 struct omap_vout_device *vout = fh;
1052 strlcpy(cap->driver, VOUT_NAME, sizeof(cap->driver));
1053 strlcpy(cap->card, vout->vfd->name, sizeof(cap->card));
1054 cap->bus_info[0] = '\0';
1055 cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_OUTPUT |
1056 V4L2_CAP_VIDEO_OUTPUT_OVERLAY;
1058 return 0;
1059 }
1061 static int vidioc_enum_fmt_vid_out(struct file *file, void *fh,
1062 struct v4l2_fmtdesc *fmt)
1063 {
1064 int index = fmt->index;
1066 if (index >= NUM_OUTPUT_FORMATS)
1067 return -EINVAL;
1069 fmt->flags = omap_formats[index].flags;
1070 strlcpy(fmt->description, omap_formats[index].description,
1071 sizeof(fmt->description));
1072 fmt->pixelformat = omap_formats[index].pixelformat;
1074 return 0;
1075 }
1077 static int vidioc_g_fmt_vid_out(struct file *file, void *fh,
1078 struct v4l2_format *f)
1079 {
1080 struct omap_vout_device *vout = fh;
1082 f->fmt.pix = vout->pix;
1083 return 0;
1085 }
1087 static int vidioc_try_fmt_vid_out(struct file *file, void *fh,
1088 struct v4l2_format *f)
1089 {
1090 struct omap_overlay *ovl;
1091 struct omapvideo_info *ovid;
1092 struct omap_video_timings *timing;
1093 struct omap_vout_device *vout = fh;
1094 struct omap_dss_device *dssdev;
1096 ovid = &vout->vid_info;
1097 ovl = ovid->overlays[0];
1098 /* get the display device attached to the overlay */
1099 dssdev = ovl->get_device(ovl);
1101 if (!dssdev)
1102 return -EINVAL;
1104 timing = &dssdev->panel.timings;
1106 vout->fbuf.fmt.height = timing->y_res;
1107 vout->fbuf.fmt.width = timing->x_res;
1109 omap_vout_try_format(&f->fmt.pix);
1110 return 0;
1111 }
1113 static int vidioc_s_fmt_vid_out(struct file *file, void *fh,
1114 struct v4l2_format *f)
1115 {
1116 int ret, bpp;
1117 struct omap_overlay *ovl;
1118 struct omapvideo_info *ovid;
1119 struct omap_video_timings *timing;
1120 struct omap_vout_device *vout = fh;
1121 struct omap_dss_device *dssdev;
1123 if (vout->streaming)
1124 return -EBUSY;
1126 mutex_lock(&vout->lock);
1128 ovid = &vout->vid_info;
1129 ovl = ovid->overlays[0];
1130 dssdev = ovl->get_device(ovl);
1132 /* get the display device attached to the overlay */
1133 if (!dssdev) {
1134 ret = -EINVAL;
1135 goto s_fmt_vid_out_exit;
1136 }
1137 timing = &dssdev->panel.timings;
1139 /* We dont support RGB24-packed mode if vrfb rotation
1140 * is enabled*/
1141 if ((is_rotation_enabled(vout)) &&
1142 f->fmt.pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1143 ret = -EINVAL;
1144 goto s_fmt_vid_out_exit;
1145 }
1147 /* get the framebuffer parameters */
1149 if (is_rotation_90_or_270(vout)) {
1150 vout->fbuf.fmt.height = timing->x_res;
1151 vout->fbuf.fmt.width = timing->y_res;
1152 } else {
1153 vout->fbuf.fmt.height = timing->y_res;
1154 vout->fbuf.fmt.width = timing->x_res;
1155 }
1157 /* change to samller size is OK */
1159 bpp = omap_vout_try_format(&f->fmt.pix);
1160 f->fmt.pix.sizeimage = f->fmt.pix.width * f->fmt.pix.height * bpp;
1162 /* try & set the new output format */
1163 vout->bpp = bpp;
1164 vout->pix = f->fmt.pix;
1165 vout->vrfb_bpp = 1;
1167 /* If YUYV then vrfb bpp is 2, for others its 1 */
1168 if (V4L2_PIX_FMT_YUYV == vout->pix.pixelformat ||
1169 V4L2_PIX_FMT_UYVY == vout->pix.pixelformat)
1170 vout->vrfb_bpp = 2;
1172 /* set default crop and win */
1173 omap_vout_new_format(&vout->pix, &vout->fbuf, &vout->crop, &vout->win);
1175 ret = 0;
1177 s_fmt_vid_out_exit:
1178 mutex_unlock(&vout->lock);
1179 return ret;
1180 }
1182 static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh,
1183 struct v4l2_format *f)
1184 {
1185 int ret = 0;
1186 struct omap_vout_device *vout = fh;
1187 struct omap_overlay *ovl;
1188 struct omapvideo_info *ovid;
1189 struct v4l2_window *win = &f->fmt.win;
1191 ovid = &vout->vid_info;
1192 ovl = ovid->overlays[0];
1194 ret = omap_vout_try_window(&vout->fbuf, win);
1196 if (!ret) {
1197 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1198 win->global_alpha = 255;
1199 else
1200 win->global_alpha = f->fmt.win.global_alpha;
1201 }
1203 return ret;
1204 }
1206 static int vidioc_s_fmt_vid_overlay(struct file *file, void *fh,
1207 struct v4l2_format *f)
1208 {
1209 int ret = 0;
1210 struct omap_overlay *ovl;
1211 struct omapvideo_info *ovid;
1212 struct omap_vout_device *vout = fh;
1213 struct v4l2_window *win = &f->fmt.win;
1215 mutex_lock(&vout->lock);
1216 ovid = &vout->vid_info;
1217 ovl = ovid->overlays[0];
1219 ret = omap_vout_new_window(&vout->crop, &vout->win, &vout->fbuf, win);
1220 if (!ret) {
1221 /* Video1 plane does not support global alpha on OMAP3 */
1222 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1223 vout->win.global_alpha = 255;
1224 else
1225 vout->win.global_alpha = f->fmt.win.global_alpha;
1227 vout->win.chromakey = f->fmt.win.chromakey;
1228 }
1229 mutex_unlock(&vout->lock);
1230 return ret;
1231 }
1233 static int vidioc_enum_fmt_vid_overlay(struct file *file, void *fh,
1234 struct v4l2_fmtdesc *fmt)
1235 {
1236 int index = fmt->index;
1238 if (index >= NUM_OUTPUT_FORMATS)
1239 return -EINVAL;
1241 fmt->flags = omap_formats[index].flags;
1242 strlcpy(fmt->description, omap_formats[index].description,
1243 sizeof(fmt->description));
1244 fmt->pixelformat = omap_formats[index].pixelformat;
1245 return 0;
1246 }
1248 static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh,
1249 struct v4l2_format *f)
1250 {
1251 u32 key_value = 0;
1252 struct omap_overlay *ovl;
1253 struct omapvideo_info *ovid;
1254 struct omap_vout_device *vout = fh;
1255 struct omap_overlay_manager_info info;
1256 struct v4l2_window *win = &f->fmt.win;
1258 ovid = &vout->vid_info;
1259 ovl = ovid->overlays[0];
1261 win->w = vout->win.w;
1262 win->field = vout->win.field;
1263 win->global_alpha = vout->win.global_alpha;
1265 if (ovl->manager && ovl->manager->get_manager_info) {
1266 ovl->manager->get_manager_info(ovl->manager, &info);
1267 key_value = info.trans_key;
1268 }
1269 win->chromakey = key_value;
1270 return 0;
1271 }
1273 static int vidioc_cropcap(struct file *file, void *fh,
1274 struct v4l2_cropcap *cropcap)
1275 {
1276 struct omap_vout_device *vout = fh;
1277 struct v4l2_pix_format *pix = &vout->pix;
1279 if (cropcap->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1280 return -EINVAL;
1282 /* Width and height are always even */
1283 cropcap->bounds.width = pix->width & ~1;
1284 cropcap->bounds.height = pix->height & ~1;
1286 omap_vout_default_crop(&vout->pix, &vout->fbuf, &cropcap->defrect);
1287 cropcap->pixelaspect.numerator = 1;
1288 cropcap->pixelaspect.denominator = 1;
1289 return 0;
1290 }
1292 static int vidioc_g_crop(struct file *file, void *fh, struct v4l2_crop *crop)
1293 {
1294 struct omap_vout_device *vout = fh;
1296 if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1297 return -EINVAL;
1298 crop->c = vout->crop;
1299 return 0;
1300 }
1302 static int vidioc_s_crop(struct file *file, void *fh, const struct v4l2_crop *crop)
1303 {
1304 int ret = -EINVAL;
1305 struct omap_vout_device *vout = fh;
1306 struct omapvideo_info *ovid;
1307 struct omap_overlay *ovl;
1308 struct omap_video_timings *timing;
1309 struct omap_dss_device *dssdev;
1311 if (vout->streaming)
1312 return -EBUSY;
1314 mutex_lock(&vout->lock);
1315 ovid = &vout->vid_info;
1316 ovl = ovid->overlays[0];
1317 /* get the display device attached to the overlay */
1318 dssdev = ovl->get_device(ovl);
1320 if (!dssdev) {
1321 ret = -EINVAL;
1322 goto s_crop_err;
1323 }
1325 timing = &dssdev->panel.timings;
1327 if (is_rotation_90_or_270(vout)) {
1328 vout->fbuf.fmt.height = timing->x_res;
1329 vout->fbuf.fmt.width = timing->y_res;
1330 } else {
1331 vout->fbuf.fmt.height = timing->y_res;
1332 vout->fbuf.fmt.width = timing->x_res;
1333 }
1335 if (crop->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1336 ret = omap_vout_new_crop(&vout->pix, &vout->crop, &vout->win,
1337 &vout->fbuf, &crop->c);
1339 s_crop_err:
1340 mutex_unlock(&vout->lock);
1341 return ret;
1342 }
1344 static int vidioc_queryctrl(struct file *file, void *fh,
1345 struct v4l2_queryctrl *ctrl)
1346 {
1347 int ret = 0;
1349 switch (ctrl->id) {
1350 case V4L2_CID_ROTATE:
1351 ret = v4l2_ctrl_query_fill(ctrl, 0, 270, 90, 0);
1352 break;
1353 case V4L2_CID_BG_COLOR:
1354 ret = v4l2_ctrl_query_fill(ctrl, 0, 0xFFFFFF, 1, 0);
1355 break;
1356 case V4L2_CID_VFLIP:
1357 ret = v4l2_ctrl_query_fill(ctrl, 0, 1, 1, 0);
1358 break;
1359 default:
1360 ctrl->name[0] = '\0';
1361 ret = -EINVAL;
1362 }
1363 return ret;
1364 }
1366 static int vidioc_g_ctrl(struct file *file, void *fh, struct v4l2_control *ctrl)
1367 {
1368 int ret = 0;
1369 struct omap_vout_device *vout = fh;
1371 switch (ctrl->id) {
1372 case V4L2_CID_ROTATE:
1373 ctrl->value = vout->control[0].value;
1374 break;
1375 case V4L2_CID_BG_COLOR:
1376 {
1377 struct omap_overlay_manager_info info;
1378 struct omap_overlay *ovl;
1380 ovl = vout->vid_info.overlays[0];
1381 if (!ovl->manager || !ovl->manager->get_manager_info) {
1382 ret = -EINVAL;
1383 break;
1384 }
1386 ovl->manager->get_manager_info(ovl->manager, &info);
1387 ctrl->value = info.default_color;
1388 break;
1389 }
1390 case V4L2_CID_VFLIP:
1391 ctrl->value = vout->control[2].value;
1392 break;
1393 default:
1394 ret = -EINVAL;
1395 }
1396 return ret;
1397 }
1399 static int vidioc_s_ctrl(struct file *file, void *fh, struct v4l2_control *a)
1400 {
1401 int ret = 0;
1402 struct omap_vout_device *vout = fh;
1404 switch (a->id) {
1405 case V4L2_CID_ROTATE:
1406 {
1407 struct omapvideo_info *ovid;
1408 int rotation = a->value;
1410 ovid = &vout->vid_info;
1412 mutex_lock(&vout->lock);
1413 if (rotation && ovid->rotation_type == VOUT_ROT_NONE) {
1414 mutex_unlock(&vout->lock);
1415 ret = -ERANGE;
1416 break;
1417 }
1419 if (rotation && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1420 mutex_unlock(&vout->lock);
1421 ret = -EINVAL;
1422 break;
1423 }
1425 if (v4l2_rot_to_dss_rot(rotation, &vout->rotation,
1426 vout->mirror)) {
1427 mutex_unlock(&vout->lock);
1428 ret = -EINVAL;
1429 break;
1430 }
1432 vout->control[0].value = rotation;
1433 mutex_unlock(&vout->lock);
1434 break;
1435 }
1436 case V4L2_CID_BG_COLOR:
1437 {
1438 struct omap_overlay *ovl;
1439 unsigned int color = a->value;
1440 struct omap_overlay_manager_info info;
1442 ovl = vout->vid_info.overlays[0];
1444 mutex_lock(&vout->lock);
1445 if (!ovl->manager || !ovl->manager->get_manager_info) {
1446 mutex_unlock(&vout->lock);
1447 ret = -EINVAL;
1448 break;
1449 }
1451 ovl->manager->get_manager_info(ovl->manager, &info);
1452 info.default_color = color;
1453 if (ovl->manager->set_manager_info(ovl->manager, &info)) {
1454 mutex_unlock(&vout->lock);
1455 ret = -EINVAL;
1456 break;
1457 }
1459 vout->control[1].value = color;
1460 mutex_unlock(&vout->lock);
1461 break;
1462 }
1463 case V4L2_CID_VFLIP:
1464 {
1465 struct omap_overlay *ovl;
1466 struct omapvideo_info *ovid;
1467 unsigned int mirror = a->value;
1469 ovid = &vout->vid_info;
1470 ovl = ovid->overlays[0];
1472 mutex_lock(&vout->lock);
1473 if (mirror && ovid->rotation_type == VOUT_ROT_NONE) {
1474 mutex_unlock(&vout->lock);
1475 ret = -ERANGE;
1476 break;
1477 }
1479 if (mirror && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1480 mutex_unlock(&vout->lock);
1481 ret = -EINVAL;
1482 break;
1483 }
1484 vout->mirror = mirror;
1485 vout->control[2].value = mirror;
1486 mutex_unlock(&vout->lock);
1487 break;
1488 }
1489 default:
1490 ret = -EINVAL;
1491 }
1492 return ret;
1493 }
1495 static int vidioc_reqbufs(struct file *file, void *fh,
1496 struct v4l2_requestbuffers *req)
1497 {
1498 int ret = 0;
1499 unsigned int i, num_buffers = 0;
1500 struct omap_vout_device *vout = fh;
1501 struct videobuf_queue *q = &vout->vbq;
1503 if ((req->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) || (req->count < 0))
1504 return -EINVAL;
1505 /* if memory is not mmp or userptr
1506 return error */
1507 if ((V4L2_MEMORY_MMAP != req->memory) &&
1508 (V4L2_MEMORY_USERPTR != req->memory))
1509 return -EINVAL;
1511 mutex_lock(&vout->lock);
1512 /* Cannot be requested when streaming is on */
1513 if (vout->streaming) {
1514 ret = -EBUSY;
1515 goto reqbuf_err;
1516 }
1518 /* If buffers are already allocated free them */
1519 if (q->bufs[0] && (V4L2_MEMORY_MMAP == q->bufs[0]->memory)) {
1520 if (vout->mmap_count) {
1521 ret = -EBUSY;
1522 goto reqbuf_err;
1523 }
1524 num_buffers = (vout->vid == OMAP_VIDEO1) ?
1525 video1_numbuffers : video2_numbuffers;
1526 for (i = num_buffers; i < vout->buffer_allocated; i++) {
1527 omap_vout_free_buffer(vout->buf_virt_addr[i],
1528 vout->buffer_size);
1529 vout->buf_virt_addr[i] = 0;
1530 vout->buf_phy_addr[i] = 0;
1531 }
1532 vout->buffer_allocated = num_buffers;
1533 videobuf_mmap_free(q);
1534 } else if (q->bufs[0] && (V4L2_MEMORY_USERPTR == q->bufs[0]->memory)) {
1535 if (vout->buffer_allocated) {
1536 videobuf_mmap_free(q);
1537 for (i = 0; i < vout->buffer_allocated; i++) {
1538 kfree(q->bufs[i]);
1539 q->bufs[i] = NULL;
1540 }
1541 vout->buffer_allocated = 0;
1542 }
1543 }
1545 /*store the memory type in data structure */
1546 vout->memory = req->memory;
1548 INIT_LIST_HEAD(&vout->dma_queue);
1550 /* call videobuf_reqbufs api */
1551 ret = videobuf_reqbufs(q, req);
1552 if (ret < 0)
1553 goto reqbuf_err;
1555 vout->buffer_allocated = req->count;
1557 reqbuf_err:
1558 mutex_unlock(&vout->lock);
1559 return ret;
1560 }
1562 static int vidioc_querybuf(struct file *file, void *fh,
1563 struct v4l2_buffer *b)
1564 {
1565 struct omap_vout_device *vout = fh;
1567 return videobuf_querybuf(&vout->vbq, b);
1568 }
1570 static int vidioc_qbuf(struct file *file, void *fh,
1571 struct v4l2_buffer *buffer)
1572 {
1573 struct omap_vout_device *vout = fh;
1574 struct videobuf_queue *q = &vout->vbq;
1576 if ((V4L2_BUF_TYPE_VIDEO_OUTPUT != buffer->type) ||
1577 (buffer->index >= vout->buffer_allocated) ||
1578 (q->bufs[buffer->index]->memory != buffer->memory)) {
1579 return -EINVAL;
1580 }
1581 if (V4L2_MEMORY_USERPTR == buffer->memory) {
1582 if ((buffer->length < vout->pix.sizeimage) ||
1583 (0 == buffer->m.userptr)) {
1584 return -EINVAL;
1585 }
1586 }
1588 if ((is_rotation_enabled(vout)) &&
1589 vout->vrfb_dma_tx.req_status == DMA_CHAN_NOT_ALLOTED) {
1590 v4l2_warn(&vout->vid_dev->v4l2_dev,
1591 "DMA Channel not allocated for Rotation\n");
1592 return -EINVAL;
1593 }
1595 return videobuf_qbuf(q, buffer);
1596 }
1598 static int vidioc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *b)
1599 {
1600 struct omap_vout_device *vout = fh;
1601 struct videobuf_queue *q = &vout->vbq;
1603 int ret;
1604 u32 addr;
1605 unsigned long size;
1606 struct videobuf_buffer *vb;
1608 vb = q->bufs[b->index];
1610 if (!vout->streaming)
1611 return -EINVAL;
1613 if (file->f_flags & O_NONBLOCK)
1614 /* Call videobuf_dqbuf for non blocking mode */
1615 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 1);
1616 else
1617 /* Call videobuf_dqbuf for blocking mode */
1618 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 0);
1620 addr = (unsigned long) vout->buf_phy_addr[vb->i];
1621 size = (unsigned long) vb->size;
1622 dma_unmap_single(vout->vid_dev->v4l2_dev.dev, addr,
1623 size, DMA_TO_DEVICE);
1624 return ret;
1625 }
1627 static int vidioc_streamon(struct file *file, void *fh, enum v4l2_buf_type i)
1628 {
1629 int ret = 0, j;
1630 u32 addr = 0, mask = 0;
1631 struct omap_vout_device *vout = fh;
1632 struct videobuf_queue *q = &vout->vbq;
1633 struct omapvideo_info *ovid = &vout->vid_info;
1635 mutex_lock(&vout->lock);
1637 if (vout->streaming) {
1638 ret = -EBUSY;
1639 goto streamon_err;
1640 }
1642 ret = videobuf_streamon(q);
1643 if (ret)
1644 goto streamon_err;
1646 if (list_empty(&vout->dma_queue)) {
1647 ret = -EIO;
1648 goto streamon_err1;
1649 }
1651 /* Get the next frame from the buffer queue */
1652 vout->next_frm = vout->cur_frm = list_entry(vout->dma_queue.next,
1653 struct videobuf_buffer, queue);
1654 /* Remove buffer from the buffer queue */
1655 list_del(&vout->cur_frm->queue);
1656 /* Mark state of the current frame to active */
1657 vout->cur_frm->state = VIDEOBUF_ACTIVE;
1658 /* Initialize field_id and started member */
1659 vout->field_id = 0;
1661 /* set flag here. Next QBUF will start DMA */
1662 vout->streaming = 1;
1664 vout->first_int = 1;
1666 if (omap_vout_calculate_offset(vout)) {
1667 ret = -EINVAL;
1668 goto streamon_err1;
1669 }
1670 addr = (unsigned long) vout->queued_buf_addr[vout->cur_frm->i]
1671 + vout->cropped_offset;
1673 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1674 | DISPC_IRQ_VSYNC2;
1676 omap_dispc_register_isr(omap_vout_isr, vout, mask);
1678 /* First save the configuration in ovelray structure */
1679 ret = omapvid_init(vout, addr);
1680 if (ret)
1681 v4l2_err(&vout->vid_dev->v4l2_dev,
1682 "failed to set overlay info\n");
1683 /* Enable the pipeline and set the Go bit */
1684 ret = omapvid_apply_changes(vout);
1685 if (ret)
1686 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1688 for (j = 0; j < ovid->num_overlays; j++) {
1689 struct omap_overlay *ovl = ovid->overlays[j];
1690 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1692 if (dssdev) {
1693 ret = ovl->enable(ovl);
1694 if (ret)
1695 goto streamon_err1;
1696 }
1697 }
1699 ret = 0;
1701 streamon_err1:
1702 if (ret)
1703 ret = videobuf_streamoff(q);
1704 streamon_err:
1705 mutex_unlock(&vout->lock);
1706 return ret;
1707 }
1709 static int vidioc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i)
1710 {
1711 u32 mask = 0;
1712 int ret = 0, j;
1713 struct omap_vout_device *vout = fh;
1714 struct omapvideo_info *ovid = &vout->vid_info;
1716 if (!vout->streaming)
1717 return -EINVAL;
1719 vout->streaming = 0;
1720 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1721 | DISPC_IRQ_VSYNC2;
1723 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
1725 for (j = 0; j < ovid->num_overlays; j++) {
1726 struct omap_overlay *ovl = ovid->overlays[j];
1727 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1729 if (dssdev)
1730 ovl->disable(ovl);
1731 }
1733 /* Turn of the pipeline */
1734 ret = omapvid_apply_changes(vout);
1735 if (ret)
1736 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode in"
1737 " streamoff\n");
1739 INIT_LIST_HEAD(&vout->dma_queue);
1740 ret = videobuf_streamoff(&vout->vbq);
1742 return ret;
1743 }
1745 static int vidioc_s_fbuf(struct file *file, void *fh,
1746 const struct v4l2_framebuffer *a)
1747 {
1748 int enable = 0;
1749 struct omap_overlay *ovl;
1750 struct omapvideo_info *ovid;
1751 struct omap_vout_device *vout = fh;
1752 struct omap_overlay_manager_info info;
1753 enum omap_dss_trans_key_type key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1755 ovid = &vout->vid_info;
1756 ovl = ovid->overlays[0];
1758 /* OMAP DSS doesn't support Source and Destination color
1759 key together */
1760 if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY) &&
1761 (a->flags & V4L2_FBUF_FLAG_CHROMAKEY))
1762 return -EINVAL;
1763 /* OMAP DSS Doesn't support the Destination color key
1764 and alpha blending together */
1765 if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY) &&
1766 (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA))
1767 return -EINVAL;
1769 if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY)) {
1770 vout->fbuf.flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1771 key_type = OMAP_DSS_COLOR_KEY_VID_SRC;
1772 } else
1773 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1775 if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY)) {
1776 vout->fbuf.flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1777 key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1778 } else
1779 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_CHROMAKEY;
1781 if (a->flags & (V4L2_FBUF_FLAG_CHROMAKEY |
1782 V4L2_FBUF_FLAG_SRC_CHROMAKEY))
1783 enable = 1;
1784 else
1785 enable = 0;
1786 if (ovl->manager && ovl->manager->get_manager_info &&
1787 ovl->manager->set_manager_info) {
1789 ovl->manager->get_manager_info(ovl->manager, &info);
1790 info.trans_enabled = enable;
1791 info.trans_key_type = key_type;
1792 info.trans_key = vout->win.chromakey;
1794 if (ovl->manager->set_manager_info(ovl->manager, &info))
1795 return -EINVAL;
1796 }
1797 if (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA) {
1798 vout->fbuf.flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1799 enable = 1;
1800 } else {
1801 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_LOCAL_ALPHA;
1802 enable = 0;
1803 }
1804 if (ovl->manager && ovl->manager->get_manager_info &&
1805 ovl->manager->set_manager_info) {
1806 ovl->manager->get_manager_info(ovl->manager, &info);
1807 /* enable this only if there is no zorder cap */
1808 if ((ovl->caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
1809 info.partial_alpha_enabled = enable;
1810 if (ovl->manager->set_manager_info(ovl->manager, &info))
1811 return -EINVAL;
1812 }
1814 return 0;
1815 }
1817 static int vidioc_g_fbuf(struct file *file, void *fh,
1818 struct v4l2_framebuffer *a)
1819 {
1820 struct omap_overlay *ovl;
1821 struct omapvideo_info *ovid;
1822 struct omap_vout_device *vout = fh;
1823 struct omap_overlay_manager_info info;
1825 ovid = &vout->vid_info;
1826 ovl = ovid->overlays[0];
1828 /* The video overlay must stay within the framebuffer and can't be
1829 positioned independently. */
1830 a->flags = V4L2_FBUF_FLAG_OVERLAY;
1831 a->capability = V4L2_FBUF_CAP_LOCAL_ALPHA | V4L2_FBUF_CAP_CHROMAKEY
1832 | V4L2_FBUF_CAP_SRC_CHROMAKEY;
1834 if (ovl->manager && ovl->manager->get_manager_info) {
1835 ovl->manager->get_manager_info(ovl->manager, &info);
1836 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_VID_SRC)
1837 a->flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1838 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_GFX_DST)
1839 a->flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1840 }
1841 if (ovl->manager && ovl->manager->get_manager_info) {
1842 ovl->manager->get_manager_info(ovl->manager, &info);
1843 if (info.partial_alpha_enabled)
1844 a->flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1845 }
1847 return 0;
1848 }
1850 static const struct v4l2_ioctl_ops vout_ioctl_ops = {
1851 .vidioc_querycap = vidioc_querycap,
1852 .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out,
1853 .vidioc_g_fmt_vid_out = vidioc_g_fmt_vid_out,
1854 .vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out,
1855 .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out,
1856 .vidioc_queryctrl = vidioc_queryctrl,
1857 .vidioc_g_ctrl = vidioc_g_ctrl,
1858 .vidioc_s_fbuf = vidioc_s_fbuf,
1859 .vidioc_g_fbuf = vidioc_g_fbuf,
1860 .vidioc_s_ctrl = vidioc_s_ctrl,
1861 .vidioc_try_fmt_vid_overlay = vidioc_try_fmt_vid_overlay,
1862 .vidioc_s_fmt_vid_overlay = vidioc_s_fmt_vid_overlay,
1863 .vidioc_enum_fmt_vid_overlay = vidioc_enum_fmt_vid_overlay,
1864 .vidioc_g_fmt_vid_overlay = vidioc_g_fmt_vid_overlay,
1865 .vidioc_cropcap = vidioc_cropcap,
1866 .vidioc_g_crop = vidioc_g_crop,
1867 .vidioc_s_crop = vidioc_s_crop,
1868 .vidioc_reqbufs = vidioc_reqbufs,
1869 .vidioc_querybuf = vidioc_querybuf,
1870 .vidioc_qbuf = vidioc_qbuf,
1871 .vidioc_dqbuf = vidioc_dqbuf,
1872 .vidioc_streamon = vidioc_streamon,
1873 .vidioc_streamoff = vidioc_streamoff,
1874 };
1876 static const struct v4l2_file_operations omap_vout_fops = {
1877 .owner = THIS_MODULE,
1878 .poll = omap_vout_poll,
1879 .unlocked_ioctl = video_ioctl2,
1880 .mmap = omap_vout_mmap,
1881 .open = omap_vout_open,
1882 .release = omap_vout_release,
1883 };
1885 /* Init functions used during driver initialization */
1886 /* Initial setup of video_data */
1887 static int __init omap_vout_setup_video_data(struct omap_vout_device *vout)
1888 {
1889 struct video_device *vfd;
1890 struct v4l2_pix_format *pix;
1891 struct v4l2_control *control;
1892 struct omap_overlay *ovl = vout->vid_info.overlays[0];
1893 struct omap_dss_device *display = ovl->get_device(ovl);
1895 /* set the default pix */
1896 pix = &vout->pix;
1898 /* Set the default picture of QVGA */
1899 pix->width = QQVGA_WIDTH;
1900 pix->height = QQVGA_HEIGHT;
1902 /* Default pixel format is RGB 5-6-5 */
1903 pix->pixelformat = V4L2_PIX_FMT_RGB565;
1904 pix->field = V4L2_FIELD_ANY;
1905 pix->bytesperline = pix->width * 2;
1906 pix->sizeimage = pix->bytesperline * pix->height;
1907 pix->priv = 0;
1908 pix->colorspace = V4L2_COLORSPACE_JPEG;
1910 vout->bpp = RGB565_BPP;
1911 vout->fbuf.fmt.width = display->panel.timings.x_res;
1912 vout->fbuf.fmt.height = display->panel.timings.y_res;
1914 /* Set the data structures for the overlay parameters*/
1915 vout->win.global_alpha = 255;
1916 vout->fbuf.flags = 0;
1917 vout->fbuf.capability = V4L2_FBUF_CAP_LOCAL_ALPHA |
1918 V4L2_FBUF_CAP_SRC_CHROMAKEY | V4L2_FBUF_CAP_CHROMAKEY;
1919 vout->win.chromakey = 0;
1921 omap_vout_new_format(pix, &vout->fbuf, &vout->crop, &vout->win);
1923 /*Initialize the control variables for
1924 rotation, flipping and background color. */
1925 control = vout->control;
1926 control[0].id = V4L2_CID_ROTATE;
1927 control[0].value = 0;
1928 vout->rotation = 0;
1929 vout->mirror = 0;
1930 vout->control[2].id = V4L2_CID_HFLIP;
1931 vout->control[2].value = 0;
1932 if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
1933 vout->vrfb_bpp = 2;
1935 control[1].id = V4L2_CID_BG_COLOR;
1936 control[1].value = 0;
1938 /* initialize the video_device struct */
1939 vfd = vout->vfd = video_device_alloc();
1941 if (!vfd) {
1942 printk(KERN_ERR VOUT_NAME ": could not allocate"
1943 " video device struct\n");
1944 return -ENOMEM;
1945 }
1946 vfd->release = video_device_release;
1947 vfd->ioctl_ops = &vout_ioctl_ops;
1949 strlcpy(vfd->name, VOUT_NAME, sizeof(vfd->name));
1951 vfd->fops = &omap_vout_fops;
1952 vfd->v4l2_dev = &vout->vid_dev->v4l2_dev;
1953 vfd->vfl_dir = VFL_DIR_TX;
1954 mutex_init(&vout->lock);
1956 vfd->minor = -1;
1957 return 0;
1959 }
1961 /* Setup video buffers */
1962 static int __init omap_vout_setup_video_bufs(struct platform_device *pdev,
1963 int vid_num)
1964 {
1965 u32 numbuffers;
1966 int ret = 0, i;
1967 struct omapvideo_info *ovid;
1968 struct omap_vout_device *vout;
1969 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1970 struct omap2video_device *vid_dev =
1971 container_of(v4l2_dev, struct omap2video_device, v4l2_dev);
1973 vout = vid_dev->vouts[vid_num];
1974 ovid = &vout->vid_info;
1976 numbuffers = (vid_num == 0) ? video1_numbuffers : video2_numbuffers;
1977 vout->buffer_size = (vid_num == 0) ? video1_bufsize : video2_bufsize;
1978 dev_info(&pdev->dev, "Buffer Size = %d\n", vout->buffer_size);
1980 for (i = 0; i < numbuffers; i++) {
1981 vout->buf_virt_addr[i] =
1982 omap_vout_alloc_buffer(vout->buffer_size,
1983 (u32 *) &vout->buf_phy_addr[i]);
1984 if (!vout->buf_virt_addr[i]) {
1985 numbuffers = i;
1986 ret = -ENOMEM;
1987 goto free_buffers;
1988 }
1989 }
1991 vout->cropped_offset = 0;
1993 if (ovid->rotation_type == VOUT_ROT_VRFB) {
1994 int static_vrfb_allocation = (vid_num == 0) ?
1995 vid1_static_vrfb_alloc : vid2_static_vrfb_alloc;
1996 ret = omap_vout_setup_vrfb_bufs(pdev, vid_num,
1997 static_vrfb_allocation);
1998 }
2000 return ret;
2002 free_buffers:
2003 for (i = 0; i < numbuffers; i++) {
2004 omap_vout_free_buffer(vout->buf_virt_addr[i],
2005 vout->buffer_size);
2006 vout->buf_virt_addr[i] = 0;
2007 vout->buf_phy_addr[i] = 0;
2008 }
2009 return ret;
2011 }
2013 /* Create video out devices */
2014 static int __init omap_vout_create_video_devices(struct platform_device *pdev)
2015 {
2016 int ret = 0, k;
2017 struct omap_vout_device *vout;
2018 struct video_device *vfd = NULL;
2019 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2020 struct omap2video_device *vid_dev = container_of(v4l2_dev,
2021 struct omap2video_device, v4l2_dev);
2023 for (k = 0; k < pdev->num_resources; k++) {
2025 vout = kzalloc(sizeof(struct omap_vout_device), GFP_KERNEL);
2026 if (!vout) {
2027 dev_err(&pdev->dev, ": could not allocate memory\n");
2028 return -ENOMEM;
2029 }
2031 vout->vid = k;
2032 vid_dev->vouts[k] = vout;
2033 vout->vid_dev = vid_dev;
2034 /* Select video2 if only 1 overlay is controlled by V4L2 */
2035 if (pdev->num_resources == 1)
2036 vout->vid_info.overlays[0] = vid_dev->overlays[k + 2];
2037 else
2038 /* Else select video1 and video2 one by one. */
2039 vout->vid_info.overlays[0] = vid_dev->overlays[k + 1];
2040 vout->vid_info.num_overlays = 1;
2041 vout->vid_info.id = k + 1;
2043 /* Set VRFB as rotation_type for omap2 and omap3 */
2044 if (omap_vout_dss_omap24xx() || omap_vout_dss_omap34xx())
2045 vout->vid_info.rotation_type = VOUT_ROT_VRFB;
2047 /* Setup the default configuration for the video devices
2048 */
2049 if (omap_vout_setup_video_data(vout) != 0) {
2050 ret = -ENOMEM;
2051 goto error;
2052 }
2054 /* Allocate default number of buffers for the video streaming
2055 * and reserve the VRFB space for rotation
2056 */
2057 if (omap_vout_setup_video_bufs(pdev, k) != 0) {
2058 ret = -ENOMEM;
2059 goto error1;
2060 }
2062 /* Register the Video device with V4L2
2063 */
2064 vfd = vout->vfd;
2065 if (video_register_device(vfd, VFL_TYPE_GRABBER, -1) < 0) {
2066 dev_err(&pdev->dev, ": Could not register "
2067 "Video for Linux device\n");
2068 vfd->minor = -1;
2069 ret = -ENODEV;
2070 goto error2;
2071 }
2072 video_set_drvdata(vfd, vout);
2074 dev_info(&pdev->dev, ": registered and initialized"
2075 " video device %d\n", vfd->minor);
2076 if (k == (pdev->num_resources - 1))
2077 return 0;
2079 continue;
2080 error2:
2081 if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
2082 omap_vout_release_vrfb(vout);
2083 omap_vout_free_buffers(vout);
2084 error1:
2085 video_device_release(vfd);
2086 error:
2087 kfree(vout);
2088 return ret;
2089 }
2091 return -ENODEV;
2092 }
2093 /* Driver functions */
2094 static void omap_vout_cleanup_device(struct omap_vout_device *vout)
2095 {
2096 struct video_device *vfd;
2097 struct omapvideo_info *ovid;
2099 if (!vout)
2100 return;
2102 vfd = vout->vfd;
2103 ovid = &vout->vid_info;
2104 if (vfd) {
2105 if (!video_is_registered(vfd)) {
2106 /*
2107 * The device was never registered, so release the
2108 * video_device struct directly.
2109 */
2110 video_device_release(vfd);
2111 } else {
2112 /*
2113 * The unregister function will release the video_device
2114 * struct as well as unregistering it.
2115 */
2116 video_unregister_device(vfd);
2117 }
2118 }
2119 if (ovid->rotation_type == VOUT_ROT_VRFB) {
2120 omap_vout_release_vrfb(vout);
2121 /* Free the VRFB buffer if allocated
2122 * init time
2123 */
2124 if (vout->vrfb_static_allocation)
2125 omap_vout_free_vrfb_buffers(vout);
2126 }
2127 omap_vout_free_buffers(vout);
2129 kfree(vout);
2130 }
2132 static int omap_vout_remove(struct platform_device *pdev)
2133 {
2134 int k;
2135 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2136 struct omap2video_device *vid_dev = container_of(v4l2_dev, struct
2137 omap2video_device, v4l2_dev);
2139 v4l2_device_unregister(v4l2_dev);
2140 for (k = 0; k < pdev->num_resources; k++)
2141 omap_vout_cleanup_device(vid_dev->vouts[k]);
2143 for (k = 0; k < vid_dev->num_displays; k++) {
2144 if (vid_dev->displays[k]->state != OMAP_DSS_DISPLAY_DISABLED)
2145 vid_dev->displays[k]->driver->disable(vid_dev->displays[k]);
2147 omap_dss_put_device(vid_dev->displays[k]);
2148 }
2149 kfree(vid_dev);
2150 return 0;
2151 }
2153 static int __init omap_vout_probe(struct platform_device *pdev)
2154 {
2155 int ret = 0, i;
2156 struct omap_overlay *ovl;
2157 struct omap_dss_device *dssdev = NULL;
2158 struct omap_dss_device *def_display;
2159 struct omap2video_device *vid_dev = NULL;
2161 ret = omapdss_compat_init();
2162 if (ret) {
2163 dev_err(&pdev->dev, "failed to init dss\n");
2164 return ret;
2165 }
2167 if (pdev->num_resources == 0) {
2168 dev_err(&pdev->dev, "probed for an unknown device\n");
2169 ret = -ENODEV;
2170 goto err_dss_init;
2171 }
2173 vid_dev = kzalloc(sizeof(struct omap2video_device), GFP_KERNEL);
2174 if (vid_dev == NULL) {
2175 ret = -ENOMEM;
2176 goto err_dss_init;
2177 }
2179 vid_dev->num_displays = 0;
2180 for_each_dss_dev(dssdev) {
2181 omap_dss_get_device(dssdev);
2183 if (!dssdev->driver) {
2184 dev_warn(&pdev->dev, "no driver for display: %s\n",
2185 dssdev->name);
2186 omap_dss_put_device(dssdev);
2187 continue;
2188 }
2190 vid_dev->displays[vid_dev->num_displays++] = dssdev;
2191 }
2193 if (vid_dev->num_displays == 0) {
2194 dev_err(&pdev->dev, "no displays\n");
2195 ret = -EINVAL;
2196 goto probe_err0;
2197 }
2199 vid_dev->num_overlays = omap_dss_get_num_overlays();
2200 for (i = 0; i < vid_dev->num_overlays; i++)
2201 vid_dev->overlays[i] = omap_dss_get_overlay(i);
2203 vid_dev->num_managers = omap_dss_get_num_overlay_managers();
2204 for (i = 0; i < vid_dev->num_managers; i++)
2205 vid_dev->managers[i] = omap_dss_get_overlay_manager(i);
2207 /* Get the Video1 overlay and video2 overlay.
2208 * Setup the Display attached to that overlays
2209 */
2210 for (i = 1; i < vid_dev->num_overlays; i++) {
2211 ovl = omap_dss_get_overlay(i);
2212 dssdev = ovl->get_device(ovl);
2214 if (dssdev) {
2215 def_display = dssdev;
2216 } else {
2217 dev_warn(&pdev->dev, "cannot find display\n");
2218 def_display = NULL;
2219 }
2220 if (def_display) {
2221 struct omap_dss_driver *dssdrv = def_display->driver;
2223 ret = dssdrv->enable(def_display);
2224 if (ret) {
2225 /* Here we are not considering a error
2226 * as display may be enabled by frame
2227 * buffer driver
2228 */
2229 dev_warn(&pdev->dev,
2230 "'%s' Display already enabled\n",
2231 def_display->name);
2232 }
2233 }
2234 }
2236 if (v4l2_device_register(&pdev->dev, &vid_dev->v4l2_dev) < 0) {
2237 dev_err(&pdev->dev, "v4l2_device_register failed\n");
2238 ret = -ENODEV;
2239 goto probe_err1;
2240 }
2242 ret = omap_vout_create_video_devices(pdev);
2243 if (ret)
2244 goto probe_err2;
2246 for (i = 0; i < vid_dev->num_displays; i++) {
2247 struct omap_dss_device *display = vid_dev->displays[i];
2249 if (display->driver->update)
2250 display->driver->update(display, 0, 0,
2251 display->panel.timings.x_res,
2252 display->panel.timings.y_res);
2253 }
2254 return 0;
2256 probe_err2:
2257 v4l2_device_unregister(&vid_dev->v4l2_dev);
2258 probe_err1:
2259 for (i = 1; i < vid_dev->num_overlays; i++) {
2260 def_display = NULL;
2261 ovl = omap_dss_get_overlay(i);
2262 dssdev = ovl->get_device(ovl);
2264 if (dssdev)
2265 def_display = dssdev;
2267 if (def_display && def_display->driver)
2268 def_display->driver->disable(def_display);
2269 }
2270 probe_err0:
2271 kfree(vid_dev);
2272 err_dss_init:
2273 omapdss_compat_uninit();
2274 return ret;
2275 }
2277 static struct platform_driver omap_vout_driver = {
2278 .driver = {
2279 .name = VOUT_NAME,
2280 },
2281 .remove = omap_vout_remove,
2282 };
2284 static int __init omap_vout_init(void)
2285 {
2286 if (platform_driver_probe(&omap_vout_driver, omap_vout_probe) != 0) {
2287 printk(KERN_ERR VOUT_NAME ":Could not register Video driver\n");
2288 return -EINVAL;
2289 }
2290 return 0;
2291 }
2293 static void omap_vout_cleanup(void)
2294 {
2295 platform_driver_unregister(&omap_vout_driver);
2296 }
2298 late_initcall(omap_vout_init);
2299 module_exit(omap_vout_cleanup);