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 */
omap_vout_try_format(struct v4l2_pix_format * pix)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 */
omap_vout_get_userptr(struct videobuf_buffer * vb,u32 virtp,u32 * physp)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, FOLL_WRITE, 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 */
omap_vout_free_buffers(struct omap_vout_device * vout)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 */
v4l2_rot_to_dss_rot(int v4l2_rotation,enum dss_rotation * rotation,bool mirror)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
omap_vout_calculate_offset(struct omap_vout_device * vout)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 */
video_mode_to_dss_mode(struct omap_vout_device * vout)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 */
omapvid_setup_overlay(struct omap_vout_device * vout,struct omap_overlay * ovl,int posx,int posy,int outw,int outh,u32 addr)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", __func__,
412 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 */
omapvid_init(struct omap_vout_device * vout,u32 addr)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 */
omapvid_apply_changes(struct omap_vout_device * vout)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
omapvid_handle_interlace_display(struct omap_vout_device * vout,unsigned int irqstatus,struct timeval timevalue)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
omap_vout_isr(void * arg,unsigned int irqstatus)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 */
omap_vout_buffer_setup(struct videobuf_queue * q,unsigned int * count,unsigned int * size)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 */
omap_vout_free_extra_buffers(struct omap_vout_device * vout)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 */
omap_vout_buffer_prepare(struct videobuf_queue * q,struct videobuf_buffer * vb,enum v4l2_field field)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,
795 "dma_map_single failed\n");
796
797 vout->queued_buf_addr[vb->i] = (u8 *)vout->buf_phy_addr[vb->i];
798 }
799
800 if (ovid->rotation_type == VOUT_ROT_VRFB)
801 return omap_vout_prepare_vrfb(vout, vb);
802 else
803 return 0;
804 }
805
806 /*
807 * Buffer queue function will be called from the videobuf layer when _QBUF
808 * ioctl is called. It is used to enqueue buffer, which is ready to be
809 * displayed.
810 */
omap_vout_buffer_queue(struct videobuf_queue * q,struct videobuf_buffer * vb)811 static void omap_vout_buffer_queue(struct videobuf_queue *q,
812 struct videobuf_buffer *vb)
813 {
814 struct omap_vout_device *vout = q->priv_data;
815
816 /* Driver is also maintainig a queue. So enqueue buffer in the driver
817 * queue */
818 list_add_tail(&vb->queue, &vout->dma_queue);
819
820 vb->state = VIDEOBUF_QUEUED;
821 }
822
823 /*
824 * Buffer release function is called from videobuf layer to release buffer
825 * which are already allocated
826 */
omap_vout_buffer_release(struct videobuf_queue * q,struct videobuf_buffer * vb)827 static void omap_vout_buffer_release(struct videobuf_queue *q,
828 struct videobuf_buffer *vb)
829 {
830 vb->state = VIDEOBUF_NEEDS_INIT;
831 if (vb->memory == V4L2_MEMORY_USERPTR && vb->priv) {
832 struct frame_vector *vec = vb->priv;
833
834 put_vaddr_frames(vec);
835 frame_vector_destroy(vec);
836 }
837 }
838
839 /*
840 * File operations
841 */
omap_vout_poll(struct file * file,struct poll_table_struct * wait)842 static unsigned int omap_vout_poll(struct file *file,
843 struct poll_table_struct *wait)
844 {
845 struct omap_vout_device *vout = file->private_data;
846 struct videobuf_queue *q = &vout->vbq;
847
848 return videobuf_poll_stream(file, q, wait);
849 }
850
omap_vout_vm_open(struct vm_area_struct * vma)851 static void omap_vout_vm_open(struct vm_area_struct *vma)
852 {
853 struct omap_vout_device *vout = vma->vm_private_data;
854
855 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
856 "vm_open [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
857 vout->mmap_count++;
858 }
859
omap_vout_vm_close(struct vm_area_struct * vma)860 static void omap_vout_vm_close(struct vm_area_struct *vma)
861 {
862 struct omap_vout_device *vout = vma->vm_private_data;
863
864 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
865 "vm_close [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
866 vout->mmap_count--;
867 }
868
869 static const struct vm_operations_struct omap_vout_vm_ops = {
870 .open = omap_vout_vm_open,
871 .close = omap_vout_vm_close,
872 };
873
omap_vout_mmap(struct file * file,struct vm_area_struct * vma)874 static int omap_vout_mmap(struct file *file, struct vm_area_struct *vma)
875 {
876 int i;
877 void *pos;
878 unsigned long start = vma->vm_start;
879 unsigned long size = (vma->vm_end - vma->vm_start);
880 struct omap_vout_device *vout = file->private_data;
881 struct videobuf_queue *q = &vout->vbq;
882
883 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
884 " %s pgoff=0x%lx, start=0x%lx, end=0x%lx\n", __func__,
885 vma->vm_pgoff, vma->vm_start, vma->vm_end);
886
887 /* look for the buffer to map */
888 for (i = 0; i < VIDEO_MAX_FRAME; i++) {
889 if (NULL == q->bufs[i])
890 continue;
891 if (V4L2_MEMORY_MMAP != q->bufs[i]->memory)
892 continue;
893 if (q->bufs[i]->boff == (vma->vm_pgoff << PAGE_SHIFT))
894 break;
895 }
896
897 if (VIDEO_MAX_FRAME == i) {
898 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
899 "offset invalid [offset=0x%lx]\n",
900 (vma->vm_pgoff << PAGE_SHIFT));
901 return -EINVAL;
902 }
903 /* Check the size of the buffer */
904 if (size > vout->buffer_size) {
905 v4l2_err(&vout->vid_dev->v4l2_dev,
906 "insufficient memory [%lu] [%u]\n",
907 size, vout->buffer_size);
908 return -ENOMEM;
909 }
910
911 q->bufs[i]->baddr = vma->vm_start;
912
913 vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
914 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
915 vma->vm_ops = &omap_vout_vm_ops;
916 vma->vm_private_data = (void *) vout;
917 pos = (void *)vout->buf_virt_addr[i];
918 vma->vm_pgoff = virt_to_phys((void *)pos) >> PAGE_SHIFT;
919 while (size > 0) {
920 unsigned long pfn;
921 pfn = virt_to_phys((void *) pos) >> PAGE_SHIFT;
922 if (remap_pfn_range(vma, start, pfn, PAGE_SIZE, PAGE_SHARED))
923 return -EAGAIN;
924 start += PAGE_SIZE;
925 pos += PAGE_SIZE;
926 size -= PAGE_SIZE;
927 }
928 vout->mmap_count++;
929 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
930
931 return 0;
932 }
933
omap_vout_release(struct file * file)934 static int omap_vout_release(struct file *file)
935 {
936 unsigned int ret, i;
937 struct videobuf_queue *q;
938 struct omapvideo_info *ovid;
939 struct omap_vout_device *vout = file->private_data;
940
941 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
942 ovid = &vout->vid_info;
943
944 if (!vout)
945 return 0;
946
947 q = &vout->vbq;
948 /* Disable all the overlay managers connected with this interface */
949 for (i = 0; i < ovid->num_overlays; i++) {
950 struct omap_overlay *ovl = ovid->overlays[i];
951 struct omap_dss_device *dssdev = ovl->get_device(ovl);
952
953 if (dssdev)
954 ovl->disable(ovl);
955 }
956 /* Turn off the pipeline */
957 ret = omapvid_apply_changes(vout);
958 if (ret)
959 v4l2_warn(&vout->vid_dev->v4l2_dev,
960 "Unable to apply changes\n");
961
962 /* Free all buffers */
963 omap_vout_free_extra_buffers(vout);
964
965 /* Free the VRFB buffers only if they are allocated
966 * during reqbufs. Don't free if init time allocated
967 */
968 if (ovid->rotation_type == VOUT_ROT_VRFB) {
969 if (!vout->vrfb_static_allocation)
970 omap_vout_free_vrfb_buffers(vout);
971 }
972 videobuf_mmap_free(q);
973
974 /* Even if apply changes fails we should continue
975 freeing allocated memory */
976 if (vout->streaming) {
977 u32 mask = 0;
978
979 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN |
980 DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_VSYNC2;
981 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
982 vout->streaming = false;
983
984 videobuf_streamoff(q);
985 videobuf_queue_cancel(q);
986 }
987
988 if (vout->mmap_count != 0)
989 vout->mmap_count = 0;
990
991 vout->opened -= 1;
992 file->private_data = NULL;
993
994 if (vout->buffer_allocated)
995 videobuf_mmap_free(q);
996
997 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
998 return ret;
999 }
1000
omap_vout_open(struct file * file)1001 static int omap_vout_open(struct file *file)
1002 {
1003 struct videobuf_queue *q;
1004 struct omap_vout_device *vout = NULL;
1005
1006 vout = video_drvdata(file);
1007 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
1008
1009 if (vout == NULL)
1010 return -ENODEV;
1011
1012 /* for now, we only support single open */
1013 if (vout->opened)
1014 return -EBUSY;
1015
1016 vout->opened += 1;
1017
1018 file->private_data = vout;
1019 vout->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1020
1021 q = &vout->vbq;
1022 video_vbq_ops.buf_setup = omap_vout_buffer_setup;
1023 video_vbq_ops.buf_prepare = omap_vout_buffer_prepare;
1024 video_vbq_ops.buf_release = omap_vout_buffer_release;
1025 video_vbq_ops.buf_queue = omap_vout_buffer_queue;
1026 spin_lock_init(&vout->vbq_lock);
1027
1028 videobuf_queue_dma_contig_init(q, &video_vbq_ops, q->dev,
1029 &vout->vbq_lock, vout->type, V4L2_FIELD_NONE,
1030 sizeof(struct videobuf_buffer), vout, NULL);
1031
1032 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1033 return 0;
1034 }
1035
1036 /*
1037 * V4L2 ioctls
1038 */
vidioc_querycap(struct file * file,void * fh,struct v4l2_capability * cap)1039 static int vidioc_querycap(struct file *file, void *fh,
1040 struct v4l2_capability *cap)
1041 {
1042 struct omap_vout_device *vout = fh;
1043
1044 strlcpy(cap->driver, VOUT_NAME, sizeof(cap->driver));
1045 strlcpy(cap->card, vout->vfd->name, sizeof(cap->card));
1046 cap->bus_info[0] = '\0';
1047 cap->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_OUTPUT |
1048 V4L2_CAP_VIDEO_OUTPUT_OVERLAY;
1049 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
1050
1051 return 0;
1052 }
1053
vidioc_enum_fmt_vid_out(struct file * file,void * fh,struct v4l2_fmtdesc * fmt)1054 static int vidioc_enum_fmt_vid_out(struct file *file, void *fh,
1055 struct v4l2_fmtdesc *fmt)
1056 {
1057 int index = fmt->index;
1058
1059 if (index >= NUM_OUTPUT_FORMATS)
1060 return -EINVAL;
1061
1062 fmt->flags = omap_formats[index].flags;
1063 strlcpy(fmt->description, omap_formats[index].description,
1064 sizeof(fmt->description));
1065 fmt->pixelformat = omap_formats[index].pixelformat;
1066
1067 return 0;
1068 }
1069
vidioc_g_fmt_vid_out(struct file * file,void * fh,struct v4l2_format * f)1070 static int vidioc_g_fmt_vid_out(struct file *file, void *fh,
1071 struct v4l2_format *f)
1072 {
1073 struct omap_vout_device *vout = fh;
1074
1075 f->fmt.pix = vout->pix;
1076 return 0;
1077
1078 }
1079
vidioc_try_fmt_vid_out(struct file * file,void * fh,struct v4l2_format * f)1080 static int vidioc_try_fmt_vid_out(struct file *file, void *fh,
1081 struct v4l2_format *f)
1082 {
1083 struct omap_overlay *ovl;
1084 struct omapvideo_info *ovid;
1085 struct omap_video_timings *timing;
1086 struct omap_vout_device *vout = fh;
1087 struct omap_dss_device *dssdev;
1088
1089 ovid = &vout->vid_info;
1090 ovl = ovid->overlays[0];
1091 /* get the display device attached to the overlay */
1092 dssdev = ovl->get_device(ovl);
1093
1094 if (!dssdev)
1095 return -EINVAL;
1096
1097 timing = &dssdev->panel.timings;
1098
1099 vout->fbuf.fmt.height = timing->y_res;
1100 vout->fbuf.fmt.width = timing->x_res;
1101
1102 omap_vout_try_format(&f->fmt.pix);
1103 return 0;
1104 }
1105
vidioc_s_fmt_vid_out(struct file * file,void * fh,struct v4l2_format * f)1106 static int vidioc_s_fmt_vid_out(struct file *file, void *fh,
1107 struct v4l2_format *f)
1108 {
1109 int ret, bpp;
1110 struct omap_overlay *ovl;
1111 struct omapvideo_info *ovid;
1112 struct omap_video_timings *timing;
1113 struct omap_vout_device *vout = fh;
1114 struct omap_dss_device *dssdev;
1115
1116 if (vout->streaming)
1117 return -EBUSY;
1118
1119 mutex_lock(&vout->lock);
1120
1121 ovid = &vout->vid_info;
1122 ovl = ovid->overlays[0];
1123 dssdev = ovl->get_device(ovl);
1124
1125 /* get the display device attached to the overlay */
1126 if (!dssdev) {
1127 ret = -EINVAL;
1128 goto s_fmt_vid_out_exit;
1129 }
1130 timing = &dssdev->panel.timings;
1131
1132 /* We dont support RGB24-packed mode if vrfb rotation
1133 * is enabled*/
1134 if ((is_rotation_enabled(vout)) &&
1135 f->fmt.pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1136 ret = -EINVAL;
1137 goto s_fmt_vid_out_exit;
1138 }
1139
1140 /* get the framebuffer parameters */
1141
1142 if (is_rotation_90_or_270(vout)) {
1143 vout->fbuf.fmt.height = timing->x_res;
1144 vout->fbuf.fmt.width = timing->y_res;
1145 } else {
1146 vout->fbuf.fmt.height = timing->y_res;
1147 vout->fbuf.fmt.width = timing->x_res;
1148 }
1149
1150 /* change to samller size is OK */
1151
1152 bpp = omap_vout_try_format(&f->fmt.pix);
1153 f->fmt.pix.sizeimage = f->fmt.pix.width * f->fmt.pix.height * bpp;
1154
1155 /* try & set the new output format */
1156 vout->bpp = bpp;
1157 vout->pix = f->fmt.pix;
1158 vout->vrfb_bpp = 1;
1159
1160 /* If YUYV then vrfb bpp is 2, for others its 1 */
1161 if (V4L2_PIX_FMT_YUYV == vout->pix.pixelformat ||
1162 V4L2_PIX_FMT_UYVY == vout->pix.pixelformat)
1163 vout->vrfb_bpp = 2;
1164
1165 /* set default crop and win */
1166 omap_vout_new_format(&vout->pix, &vout->fbuf, &vout->crop, &vout->win);
1167
1168 ret = 0;
1169
1170 s_fmt_vid_out_exit:
1171 mutex_unlock(&vout->lock);
1172 return ret;
1173 }
1174
vidioc_try_fmt_vid_overlay(struct file * file,void * fh,struct v4l2_format * f)1175 static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh,
1176 struct v4l2_format *f)
1177 {
1178 int ret = 0;
1179 struct omap_vout_device *vout = fh;
1180 struct omap_overlay *ovl;
1181 struct omapvideo_info *ovid;
1182 struct v4l2_window *win = &f->fmt.win;
1183
1184 ovid = &vout->vid_info;
1185 ovl = ovid->overlays[0];
1186
1187 ret = omap_vout_try_window(&vout->fbuf, win);
1188
1189 if (!ret) {
1190 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1191 win->global_alpha = 255;
1192 else
1193 win->global_alpha = f->fmt.win.global_alpha;
1194 }
1195
1196 return ret;
1197 }
1198
vidioc_s_fmt_vid_overlay(struct file * file,void * fh,struct v4l2_format * f)1199 static int vidioc_s_fmt_vid_overlay(struct file *file, void *fh,
1200 struct v4l2_format *f)
1201 {
1202 int ret = 0;
1203 struct omap_overlay *ovl;
1204 struct omapvideo_info *ovid;
1205 struct omap_vout_device *vout = fh;
1206 struct v4l2_window *win = &f->fmt.win;
1207
1208 mutex_lock(&vout->lock);
1209 ovid = &vout->vid_info;
1210 ovl = ovid->overlays[0];
1211
1212 ret = omap_vout_new_window(&vout->crop, &vout->win, &vout->fbuf, win);
1213 if (!ret) {
1214 /* Video1 plane does not support global alpha on OMAP3 */
1215 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1216 vout->win.global_alpha = 255;
1217 else
1218 vout->win.global_alpha = f->fmt.win.global_alpha;
1219
1220 vout->win.chromakey = f->fmt.win.chromakey;
1221 }
1222 mutex_unlock(&vout->lock);
1223 return ret;
1224 }
1225
vidioc_g_fmt_vid_overlay(struct file * file,void * fh,struct v4l2_format * f)1226 static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh,
1227 struct v4l2_format *f)
1228 {
1229 u32 key_value = 0;
1230 struct omap_overlay *ovl;
1231 struct omapvideo_info *ovid;
1232 struct omap_vout_device *vout = fh;
1233 struct omap_overlay_manager_info info;
1234 struct v4l2_window *win = &f->fmt.win;
1235
1236 ovid = &vout->vid_info;
1237 ovl = ovid->overlays[0];
1238
1239 win->w = vout->win.w;
1240 win->field = vout->win.field;
1241 win->global_alpha = vout->win.global_alpha;
1242
1243 if (ovl->manager && ovl->manager->get_manager_info) {
1244 ovl->manager->get_manager_info(ovl->manager, &info);
1245 key_value = info.trans_key;
1246 }
1247 win->chromakey = key_value;
1248 return 0;
1249 }
1250
vidioc_g_selection(struct file * file,void * fh,struct v4l2_selection * sel)1251 static int vidioc_g_selection(struct file *file, void *fh, struct v4l2_selection *sel)
1252 {
1253 struct omap_vout_device *vout = fh;
1254 struct v4l2_pix_format *pix = &vout->pix;
1255
1256 if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1257 return -EINVAL;
1258
1259 switch (sel->target) {
1260 case V4L2_SEL_TGT_CROP:
1261 sel->r = vout->crop;
1262 break;
1263 case V4L2_SEL_TGT_CROP_DEFAULT:
1264 omap_vout_default_crop(&vout->pix, &vout->fbuf, &sel->r);
1265 break;
1266 case V4L2_SEL_TGT_CROP_BOUNDS:
1267 /* Width and height are always even */
1268 sel->r.width = pix->width & ~1;
1269 sel->r.height = pix->height & ~1;
1270 break;
1271 default:
1272 return -EINVAL;
1273 }
1274 return 0;
1275 }
1276
vidioc_s_selection(struct file * file,void * fh,struct v4l2_selection * sel)1277 static int vidioc_s_selection(struct file *file, void *fh, struct v4l2_selection *sel)
1278 {
1279 int ret = -EINVAL;
1280 struct omap_vout_device *vout = fh;
1281 struct omapvideo_info *ovid;
1282 struct omap_overlay *ovl;
1283 struct omap_video_timings *timing;
1284 struct omap_dss_device *dssdev;
1285
1286 if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1287 return -EINVAL;
1288
1289 if (sel->target != V4L2_SEL_TGT_CROP)
1290 return -EINVAL;
1291
1292 if (vout->streaming)
1293 return -EBUSY;
1294
1295 mutex_lock(&vout->lock);
1296 ovid = &vout->vid_info;
1297 ovl = ovid->overlays[0];
1298 /* get the display device attached to the overlay */
1299 dssdev = ovl->get_device(ovl);
1300
1301 if (!dssdev) {
1302 ret = -EINVAL;
1303 goto s_crop_err;
1304 }
1305
1306 timing = &dssdev->panel.timings;
1307
1308 if (is_rotation_90_or_270(vout)) {
1309 vout->fbuf.fmt.height = timing->x_res;
1310 vout->fbuf.fmt.width = timing->y_res;
1311 } else {
1312 vout->fbuf.fmt.height = timing->y_res;
1313 vout->fbuf.fmt.width = timing->x_res;
1314 }
1315
1316 ret = omap_vout_new_crop(&vout->pix, &vout->crop, &vout->win,
1317 &vout->fbuf, &sel->r);
1318
1319 s_crop_err:
1320 mutex_unlock(&vout->lock);
1321 return ret;
1322 }
1323
omap_vout_s_ctrl(struct v4l2_ctrl * ctrl)1324 static int omap_vout_s_ctrl(struct v4l2_ctrl *ctrl)
1325 {
1326 struct omap_vout_device *vout =
1327 container_of(ctrl->handler, struct omap_vout_device, ctrl_handler);
1328 int ret = 0;
1329
1330 switch (ctrl->id) {
1331 case V4L2_CID_ROTATE: {
1332 struct omapvideo_info *ovid;
1333 int rotation = ctrl->val;
1334
1335 ovid = &vout->vid_info;
1336
1337 mutex_lock(&vout->lock);
1338 if (rotation && ovid->rotation_type == VOUT_ROT_NONE) {
1339 mutex_unlock(&vout->lock);
1340 ret = -ERANGE;
1341 break;
1342 }
1343
1344 if (rotation && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1345 mutex_unlock(&vout->lock);
1346 ret = -EINVAL;
1347 break;
1348 }
1349
1350 if (v4l2_rot_to_dss_rot(rotation, &vout->rotation,
1351 vout->mirror)) {
1352 mutex_unlock(&vout->lock);
1353 ret = -EINVAL;
1354 break;
1355 }
1356 mutex_unlock(&vout->lock);
1357 break;
1358 }
1359 case V4L2_CID_BG_COLOR:
1360 {
1361 struct omap_overlay *ovl;
1362 unsigned int color = ctrl->val;
1363 struct omap_overlay_manager_info info;
1364
1365 ovl = vout->vid_info.overlays[0];
1366
1367 mutex_lock(&vout->lock);
1368 if (!ovl->manager || !ovl->manager->get_manager_info) {
1369 mutex_unlock(&vout->lock);
1370 ret = -EINVAL;
1371 break;
1372 }
1373
1374 ovl->manager->get_manager_info(ovl->manager, &info);
1375 info.default_color = color;
1376 if (ovl->manager->set_manager_info(ovl->manager, &info)) {
1377 mutex_unlock(&vout->lock);
1378 ret = -EINVAL;
1379 break;
1380 }
1381 mutex_unlock(&vout->lock);
1382 break;
1383 }
1384 case V4L2_CID_VFLIP:
1385 {
1386 struct omapvideo_info *ovid;
1387 unsigned int mirror = ctrl->val;
1388
1389 ovid = &vout->vid_info;
1390
1391 mutex_lock(&vout->lock);
1392 if (mirror && ovid->rotation_type == VOUT_ROT_NONE) {
1393 mutex_unlock(&vout->lock);
1394 ret = -ERANGE;
1395 break;
1396 }
1397
1398 if (mirror && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1399 mutex_unlock(&vout->lock);
1400 ret = -EINVAL;
1401 break;
1402 }
1403 vout->mirror = mirror;
1404 mutex_unlock(&vout->lock);
1405 break;
1406 }
1407 default:
1408 return -EINVAL;
1409 }
1410 return ret;
1411 }
1412
1413 static const struct v4l2_ctrl_ops omap_vout_ctrl_ops = {
1414 .s_ctrl = omap_vout_s_ctrl,
1415 };
1416
vidioc_reqbufs(struct file * file,void * fh,struct v4l2_requestbuffers * req)1417 static int vidioc_reqbufs(struct file *file, void *fh,
1418 struct v4l2_requestbuffers *req)
1419 {
1420 int ret = 0;
1421 unsigned int i, num_buffers = 0;
1422 struct omap_vout_device *vout = fh;
1423 struct videobuf_queue *q = &vout->vbq;
1424
1425 if (req->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1426 return -EINVAL;
1427 /* if memory is not mmp or userptr
1428 return error */
1429 if ((V4L2_MEMORY_MMAP != req->memory) &&
1430 (V4L2_MEMORY_USERPTR != req->memory))
1431 return -EINVAL;
1432
1433 mutex_lock(&vout->lock);
1434 /* Cannot be requested when streaming is on */
1435 if (vout->streaming) {
1436 ret = -EBUSY;
1437 goto reqbuf_err;
1438 }
1439
1440 /* If buffers are already allocated free them */
1441 if (q->bufs[0] && (V4L2_MEMORY_MMAP == q->bufs[0]->memory)) {
1442 if (vout->mmap_count) {
1443 ret = -EBUSY;
1444 goto reqbuf_err;
1445 }
1446 num_buffers = (vout->vid == OMAP_VIDEO1) ?
1447 video1_numbuffers : video2_numbuffers;
1448 for (i = num_buffers; i < vout->buffer_allocated; i++) {
1449 omap_vout_free_buffer(vout->buf_virt_addr[i],
1450 vout->buffer_size);
1451 vout->buf_virt_addr[i] = 0;
1452 vout->buf_phy_addr[i] = 0;
1453 }
1454 vout->buffer_allocated = num_buffers;
1455 videobuf_mmap_free(q);
1456 } else if (q->bufs[0] && (V4L2_MEMORY_USERPTR == q->bufs[0]->memory)) {
1457 if (vout->buffer_allocated) {
1458 videobuf_mmap_free(q);
1459 for (i = 0; i < vout->buffer_allocated; i++) {
1460 kfree(q->bufs[i]);
1461 q->bufs[i] = NULL;
1462 }
1463 vout->buffer_allocated = 0;
1464 }
1465 }
1466
1467 /*store the memory type in data structure */
1468 vout->memory = req->memory;
1469
1470 INIT_LIST_HEAD(&vout->dma_queue);
1471
1472 /* call videobuf_reqbufs api */
1473 ret = videobuf_reqbufs(q, req);
1474 if (ret < 0)
1475 goto reqbuf_err;
1476
1477 vout->buffer_allocated = req->count;
1478
1479 reqbuf_err:
1480 mutex_unlock(&vout->lock);
1481 return ret;
1482 }
1483
vidioc_querybuf(struct file * file,void * fh,struct v4l2_buffer * b)1484 static int vidioc_querybuf(struct file *file, void *fh,
1485 struct v4l2_buffer *b)
1486 {
1487 struct omap_vout_device *vout = fh;
1488
1489 return videobuf_querybuf(&vout->vbq, b);
1490 }
1491
vidioc_qbuf(struct file * file,void * fh,struct v4l2_buffer * buffer)1492 static int vidioc_qbuf(struct file *file, void *fh,
1493 struct v4l2_buffer *buffer)
1494 {
1495 struct omap_vout_device *vout = fh;
1496 struct videobuf_queue *q = &vout->vbq;
1497
1498 if ((V4L2_BUF_TYPE_VIDEO_OUTPUT != buffer->type) ||
1499 (buffer->index >= vout->buffer_allocated) ||
1500 (q->bufs[buffer->index]->memory != buffer->memory)) {
1501 return -EINVAL;
1502 }
1503 if (V4L2_MEMORY_USERPTR == buffer->memory) {
1504 if ((buffer->length < vout->pix.sizeimage) ||
1505 (0 == buffer->m.userptr)) {
1506 return -EINVAL;
1507 }
1508 }
1509
1510 if ((is_rotation_enabled(vout)) &&
1511 vout->vrfb_dma_tx.req_status == DMA_CHAN_NOT_ALLOTED) {
1512 v4l2_warn(&vout->vid_dev->v4l2_dev,
1513 "DMA Channel not allocated for Rotation\n");
1514 return -EINVAL;
1515 }
1516
1517 return videobuf_qbuf(q, buffer);
1518 }
1519
vidioc_dqbuf(struct file * file,void * fh,struct v4l2_buffer * b)1520 static int vidioc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *b)
1521 {
1522 struct omap_vout_device *vout = fh;
1523 struct videobuf_queue *q = &vout->vbq;
1524
1525 int ret;
1526 u32 addr;
1527 unsigned long size;
1528 struct videobuf_buffer *vb;
1529
1530 if (!vout->streaming)
1531 return -EINVAL;
1532
1533 ret = videobuf_dqbuf(q, b, !!(file->f_flags & O_NONBLOCK));
1534 if (ret)
1535 return ret;
1536
1537 vb = q->bufs[b->index];
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 0;
1544 }
1545
vidioc_streamon(struct file * file,void * fh,enum v4l2_buf_type i)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
vidioc_streamoff(struct file * file,void * fh,enum v4l2_buf_type i)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,
1659 "failed to change mode in streamoff\n");
1660
1661 INIT_LIST_HEAD(&vout->dma_queue);
1662 ret = videobuf_streamoff(&vout->vbq);
1663
1664 return ret;
1665 }
1666
vidioc_s_fbuf(struct file * file,void * fh,const struct v4l2_framebuffer * a)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
vidioc_g_fbuf(struct file * file,void * fh,struct v4l2_framebuffer * a)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_g_selection = vidioc_g_selection,
1784 .vidioc_s_selection = vidioc_s_selection,
1785 .vidioc_reqbufs = vidioc_reqbufs,
1786 .vidioc_querybuf = vidioc_querybuf,
1787 .vidioc_qbuf = vidioc_qbuf,
1788 .vidioc_dqbuf = vidioc_dqbuf,
1789 .vidioc_streamon = vidioc_streamon,
1790 .vidioc_streamoff = vidioc_streamoff,
1791 };
1792
1793 static const struct v4l2_file_operations omap_vout_fops = {
1794 .owner = THIS_MODULE,
1795 .poll = omap_vout_poll,
1796 .unlocked_ioctl = video_ioctl2,
1797 .mmap = omap_vout_mmap,
1798 .open = omap_vout_open,
1799 .release = omap_vout_release,
1800 };
1801
1802 /* Init functions used during driver initialization */
1803 /* Initial setup of video_data */
omap_vout_setup_video_data(struct omap_vout_device * vout)1804 static int __init omap_vout_setup_video_data(struct omap_vout_device *vout)
1805 {
1806 struct video_device *vfd;
1807 struct v4l2_pix_format *pix;
1808 struct omap_overlay *ovl = vout->vid_info.overlays[0];
1809 struct omap_dss_device *display = ovl->get_device(ovl);
1810 struct v4l2_ctrl_handler *hdl;
1811
1812 /* set the default pix */
1813 pix = &vout->pix;
1814
1815 /* Set the default picture of QVGA */
1816 pix->width = QQVGA_WIDTH;
1817 pix->height = QQVGA_HEIGHT;
1818
1819 /* Default pixel format is RGB 5-6-5 */
1820 pix->pixelformat = V4L2_PIX_FMT_RGB565;
1821 pix->field = V4L2_FIELD_ANY;
1822 pix->bytesperline = pix->width * 2;
1823 pix->sizeimage = pix->bytesperline * pix->height;
1824 pix->colorspace = V4L2_COLORSPACE_JPEG;
1825
1826 vout->bpp = RGB565_BPP;
1827 vout->fbuf.fmt.width = display->panel.timings.x_res;
1828 vout->fbuf.fmt.height = display->panel.timings.y_res;
1829
1830 /* Set the data structures for the overlay parameters*/
1831 vout->win.global_alpha = 255;
1832 vout->fbuf.flags = 0;
1833 vout->fbuf.capability = V4L2_FBUF_CAP_LOCAL_ALPHA |
1834 V4L2_FBUF_CAP_SRC_CHROMAKEY | V4L2_FBUF_CAP_CHROMAKEY;
1835 vout->win.chromakey = 0;
1836
1837 omap_vout_new_format(pix, &vout->fbuf, &vout->crop, &vout->win);
1838
1839 hdl = &vout->ctrl_handler;
1840 v4l2_ctrl_handler_init(hdl, 3);
1841 v4l2_ctrl_new_std(hdl, &omap_vout_ctrl_ops,
1842 V4L2_CID_ROTATE, 0, 270, 90, 0);
1843 v4l2_ctrl_new_std(hdl, &omap_vout_ctrl_ops,
1844 V4L2_CID_BG_COLOR, 0, 0xffffff, 1, 0);
1845 v4l2_ctrl_new_std(hdl, &omap_vout_ctrl_ops,
1846 V4L2_CID_VFLIP, 0, 1, 1, 0);
1847 if (hdl->error)
1848 return hdl->error;
1849
1850 vout->rotation = 0;
1851 vout->mirror = false;
1852 if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
1853 vout->vrfb_bpp = 2;
1854
1855 /* initialize the video_device struct */
1856 vfd = vout->vfd = video_device_alloc();
1857
1858 if (!vfd) {
1859 printk(KERN_ERR VOUT_NAME
1860 ": could not allocate video device struct\n");
1861 v4l2_ctrl_handler_free(hdl);
1862 return -ENOMEM;
1863 }
1864 vfd->ctrl_handler = hdl;
1865 vfd->release = video_device_release;
1866 vfd->ioctl_ops = &vout_ioctl_ops;
1867
1868 strlcpy(vfd->name, VOUT_NAME, sizeof(vfd->name));
1869
1870 vfd->fops = &omap_vout_fops;
1871 vfd->v4l2_dev = &vout->vid_dev->v4l2_dev;
1872 vfd->vfl_dir = VFL_DIR_TX;
1873 mutex_init(&vout->lock);
1874
1875 vfd->minor = -1;
1876 return 0;
1877
1878 }
1879
1880 /* Setup video buffers */
omap_vout_setup_video_bufs(struct platform_device * pdev,int vid_num)1881 static int __init omap_vout_setup_video_bufs(struct platform_device *pdev,
1882 int vid_num)
1883 {
1884 u32 numbuffers;
1885 int ret = 0, i;
1886 struct omapvideo_info *ovid;
1887 struct omap_vout_device *vout;
1888 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1889 struct omap2video_device *vid_dev =
1890 container_of(v4l2_dev, struct omap2video_device, v4l2_dev);
1891
1892 vout = vid_dev->vouts[vid_num];
1893 ovid = &vout->vid_info;
1894
1895 numbuffers = (vid_num == 0) ? video1_numbuffers : video2_numbuffers;
1896 vout->buffer_size = (vid_num == 0) ? video1_bufsize : video2_bufsize;
1897 dev_info(&pdev->dev, "Buffer Size = %d\n", vout->buffer_size);
1898
1899 for (i = 0; i < numbuffers; i++) {
1900 vout->buf_virt_addr[i] =
1901 omap_vout_alloc_buffer(vout->buffer_size,
1902 (u32 *) &vout->buf_phy_addr[i]);
1903 if (!vout->buf_virt_addr[i]) {
1904 numbuffers = i;
1905 ret = -ENOMEM;
1906 goto free_buffers;
1907 }
1908 }
1909
1910 vout->cropped_offset = 0;
1911
1912 if (ovid->rotation_type == VOUT_ROT_VRFB) {
1913 bool static_vrfb_allocation = (vid_num == 0) ?
1914 vid1_static_vrfb_alloc : vid2_static_vrfb_alloc;
1915 ret = omap_vout_setup_vrfb_bufs(pdev, vid_num,
1916 static_vrfb_allocation);
1917 }
1918
1919 return ret;
1920
1921 free_buffers:
1922 for (i = 0; i < numbuffers; i++) {
1923 omap_vout_free_buffer(vout->buf_virt_addr[i],
1924 vout->buffer_size);
1925 vout->buf_virt_addr[i] = 0;
1926 vout->buf_phy_addr[i] = 0;
1927 }
1928 return ret;
1929
1930 }
1931
1932 /* Create video out devices */
omap_vout_create_video_devices(struct platform_device * pdev)1933 static int __init omap_vout_create_video_devices(struct platform_device *pdev)
1934 {
1935 int ret = 0, k;
1936 struct omap_vout_device *vout;
1937 struct video_device *vfd = NULL;
1938 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1939 struct omap2video_device *vid_dev = container_of(v4l2_dev,
1940 struct omap2video_device, v4l2_dev);
1941
1942 for (k = 0; k < pdev->num_resources; k++) {
1943
1944 vout = kzalloc(sizeof(struct omap_vout_device), GFP_KERNEL);
1945 if (!vout) {
1946 dev_err(&pdev->dev, ": could not allocate memory\n");
1947 return -ENOMEM;
1948 }
1949
1950 vout->vid = k;
1951 vid_dev->vouts[k] = vout;
1952 vout->vid_dev = vid_dev;
1953 /* Select video2 if only 1 overlay is controlled by V4L2 */
1954 if (pdev->num_resources == 1)
1955 vout->vid_info.overlays[0] = vid_dev->overlays[k + 2];
1956 else
1957 /* Else select video1 and video2 one by one. */
1958 vout->vid_info.overlays[0] = vid_dev->overlays[k + 1];
1959 vout->vid_info.num_overlays = 1;
1960 vout->vid_info.id = k + 1;
1961
1962 /* Set VRFB as rotation_type for omap2 and omap3 */
1963 if (omap_vout_dss_omap24xx() || omap_vout_dss_omap34xx())
1964 vout->vid_info.rotation_type = VOUT_ROT_VRFB;
1965
1966 /* Setup the default configuration for the video devices
1967 */
1968 if (omap_vout_setup_video_data(vout) != 0) {
1969 ret = -ENOMEM;
1970 goto error;
1971 }
1972
1973 /* Allocate default number of buffers for the video streaming
1974 * and reserve the VRFB space for rotation
1975 */
1976 if (omap_vout_setup_video_bufs(pdev, k) != 0) {
1977 ret = -ENOMEM;
1978 goto error1;
1979 }
1980
1981 /* Register the Video device with V4L2
1982 */
1983 vfd = vout->vfd;
1984 if (video_register_device(vfd, VFL_TYPE_GRABBER, -1) < 0) {
1985 dev_err(&pdev->dev,
1986 ": Could not register Video for Linux device\n");
1987 vfd->minor = -1;
1988 ret = -ENODEV;
1989 goto error2;
1990 }
1991 video_set_drvdata(vfd, vout);
1992
1993 dev_info(&pdev->dev,
1994 ": registered and initialized video device %d\n",
1995 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 */
omap_vout_cleanup_device(struct omap_vout_device * vout)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
omap_vout_remove(struct platform_device * pdev)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
omap_vout_probe(struct platform_device * pdev)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
omap_vout_init(void)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
omap_vout_cleanup(void)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