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Merge remote-tracking branch 'moduleh/module.h-split'
[linux-2.6/next.git] / drivers / media / video / davinci / vpbe_display.c
blob7f1d83a6d5759e1ec0132bdfa7bd61bcfa7f222c
1 /*
2 * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation version 2.
7 *
8 * This program is distributed WITHOUT ANY WARRANTY of any
9 * kind, whether express or implied; without even the implied warranty
10 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 */
13 #include <linux/kernel.h>
14 #include <linux/init.h>
15 #include <linux/module.h>
16 #include <linux/errno.h>
17 #include <linux/interrupt.h>
18 #include <linux/string.h>
19 #include <linux/wait.h>
20 #include <linux/time.h>
21 #include <linux/platform_device.h>
22 #include <linux/irq.h>
23 #include <linux/mm.h>
24 #include <linux/mutex.h>
25 #include <linux/videodev2.h>
26 #include <linux/slab.h>
27
28 #include <asm/pgtable.h>
29 #include <mach/cputype.h>
30
31 #include <media/v4l2-dev.h>
32 #include <media/v4l2-common.h>
33 #include <media/v4l2-ioctl.h>
34 #include <media/v4l2-device.h>
35 #include <media/davinci/vpbe_display.h>
36 #include <media/davinci/vpbe_types.h>
37 #include <media/davinci/vpbe.h>
38 #include <media/davinci/vpbe_venc.h>
39 #include <media/davinci/vpbe_osd.h>
40 #include "vpbe_venc_regs.h"
41
42 #define VPBE_DISPLAY_DRIVER "vpbe-v4l2"
43
44 static int debug;
45
46 #define VPBE_DISPLAY_SD_BUF_SIZE (720*576*2)
47 #define VPBE_DEFAULT_NUM_BUFS 3
48
49 module_param(debug, int, 0644);
50
51 static int venc_is_second_field(struct vpbe_display *disp_dev)
52 {
53 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
54 int ret;
55 int val;
56
57 ret = v4l2_subdev_call(vpbe_dev->venc,
58 core,
59 ioctl,
60 VENC_GET_FLD,
61 &val);
62 if (ret < 0) {
63 v4l2_err(&vpbe_dev->v4l2_dev,
64 "Error in getting Field ID 0\n");
65 }
66 return val;
67 }
68
69 static void vpbe_isr_even_field(struct vpbe_display *disp_obj,
70 struct vpbe_layer *layer)
71 {
72 struct timespec timevalue;
73
74 if (layer->cur_frm == layer->next_frm)
75 return;
76 ktime_get_ts(&timevalue);
77 layer->cur_frm->ts.tv_sec = timevalue.tv_sec;
78 layer->cur_frm->ts.tv_usec = timevalue.tv_nsec / NSEC_PER_USEC;
79 layer->cur_frm->state = VIDEOBUF_DONE;
80 wake_up_interruptible(&layer->cur_frm->done);
81 /* Make cur_frm pointing to next_frm */
82 layer->cur_frm = layer->next_frm;
83 }
84
85 static void vpbe_isr_odd_field(struct vpbe_display *disp_obj,
86 struct vpbe_layer *layer)
87 {
88 struct osd_state *osd_device = disp_obj->osd_device;
89 unsigned long addr;
90
91 spin_lock(&disp_obj->dma_queue_lock);
92 if (list_empty(&layer->dma_queue) ||
93 (layer->cur_frm != layer->next_frm)) {
94 spin_unlock(&disp_obj->dma_queue_lock);
95 return;
96 }
97 /*
98 * one field is displayed configure
99 * the next frame if it is available
100 * otherwise hold on current frame
101 * Get next from the buffer queue
102 */
103 layer->next_frm = list_entry(
104 layer->dma_queue.next,
105 struct videobuf_buffer,
106 queue);
107 /* Remove that from the buffer queue */
108 list_del(&layer->next_frm->queue);
109 spin_unlock(&disp_obj->dma_queue_lock);
110 /* Mark state of the frame to active */
111 layer->next_frm->state = VIDEOBUF_ACTIVE;
112 addr = videobuf_to_dma_contig(layer->next_frm);
113 osd_device->ops.start_layer(osd_device,
114 layer->layer_info.id,
115 addr,
116 disp_obj->cbcr_ofst);
117 }
118
119 /* interrupt service routine */
120 static irqreturn_t venc_isr(int irq, void *arg)
121 {
122 struct vpbe_display *disp_dev = (struct vpbe_display *)arg;
123 struct vpbe_layer *layer;
124 static unsigned last_event;
125 unsigned event = 0;
126 int fid;
127 int i;
128
129 if ((NULL == arg) || (NULL == disp_dev->dev[0]))
130 return IRQ_HANDLED;
131
132 if (venc_is_second_field(disp_dev))
133 event |= VENC_SECOND_FIELD;
134 else
135 event |= VENC_FIRST_FIELD;
136
137 if (event == (last_event & ~VENC_END_OF_FRAME)) {
138 /*
139 * If the display is non-interlaced, then we need to flag the
140 * end-of-frame event at every interrupt regardless of the
141 * value of the FIDST bit. We can conclude that the display is
142 * non-interlaced if the value of the FIDST bit is unchanged
143 * from the previous interrupt.
144 */
145 event |= VENC_END_OF_FRAME;
146 } else if (event == VENC_SECOND_FIELD) {
147 /* end-of-frame for interlaced display */
148 event |= VENC_END_OF_FRAME;
149 }
150 last_event = event;
151
152 for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
153 layer = disp_dev->dev[i];
154 /* If streaming is started in this layer */
155 if (!layer->started)
156 continue;
157
158 if (layer->layer_first_int) {
159 layer->layer_first_int = 0;
160 continue;
161 }
162 /* Check the field format */
163 if ((V4L2_FIELD_NONE == layer->pix_fmt.field) &&
164 (event & VENC_END_OF_FRAME)) {
165 /* Progressive mode */
166
167 vpbe_isr_even_field(disp_dev, layer);
168 vpbe_isr_odd_field(disp_dev, layer);
169 } else {
170 /* Interlaced mode */
171
172 layer->field_id ^= 1;
173 if (event & VENC_FIRST_FIELD)
174 fid = 0;
175 else
176 fid = 1;
177
178 /*
179 * If field id does not match with store
180 * field id
181 */
182 if (fid != layer->field_id) {
183 /* Make them in sync */
184 layer->field_id = fid;
185 continue;
186 }
187 /*
188 * device field id and local field id are
189 * in sync. If this is even field
190 */
191 if (0 == fid)
192 vpbe_isr_even_field(disp_dev, layer);
193 else /* odd field */
194 vpbe_isr_odd_field(disp_dev, layer);
195 }
196 }
197
198 return IRQ_HANDLED;
199 }
200
201 /*
202 * vpbe_buffer_prepare()
203 * This is the callback function called from videobuf_qbuf() function
204 * the buffer is prepared and user space virtual address is converted into
205 * physical address
206 */
207 static int vpbe_buffer_prepare(struct videobuf_queue *q,
208 struct videobuf_buffer *vb,
209 enum v4l2_field field)
210 {
211 struct vpbe_fh *fh = q->priv_data;
212 struct vpbe_layer *layer = fh->layer;
213 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
214 unsigned long addr;
215 int ret;
216
217 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
218 "vpbe_buffer_prepare\n");
219
220 /* If buffer is not initialized, initialize it */
221 if (VIDEOBUF_NEEDS_INIT == vb->state) {
222 vb->width = layer->pix_fmt.width;
223 vb->height = layer->pix_fmt.height;
224 vb->size = layer->pix_fmt.sizeimage;
225 vb->field = field;
226
227 ret = videobuf_iolock(q, vb, NULL);
228 if (ret < 0) {
229 v4l2_err(&vpbe_dev->v4l2_dev, "Failed to map \
230 user address\n");
231 return -EINVAL;
232 }
233
234 addr = videobuf_to_dma_contig(vb);
235
236 if (q->streaming) {
237 if (!IS_ALIGNED(addr, 8)) {
238 v4l2_err(&vpbe_dev->v4l2_dev,
239 "buffer_prepare:offset is \
240 not aligned to 32 bytes\n");
241 return -EINVAL;
242 }
243 }
244 vb->state = VIDEOBUF_PREPARED;
245 }
246 return 0;
247 }
248
249 /*
250 * vpbe_buffer_setup()
251 * This function allocates memory for the buffers
252 */
253 static int vpbe_buffer_setup(struct videobuf_queue *q,
254 unsigned int *count,
255 unsigned int *size)
256 {
257 /* Get the file handle object and layer object */
258 struct vpbe_fh *fh = q->priv_data;
259 struct vpbe_layer *layer = fh->layer;
260 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
261
262 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_buffer_setup\n");
263
264 *size = layer->pix_fmt.sizeimage;
265
266 /* Store number of buffers allocated in numbuffer member */
267 if (*count < VPBE_DEFAULT_NUM_BUFS)
268 *count = layer->numbuffers = VPBE_DEFAULT_NUM_BUFS;
269
270 return 0;
271 }
272
273 /*
274 * vpbe_buffer_queue()
275 * This function adds the buffer to DMA queue
276 */
277 static void vpbe_buffer_queue(struct videobuf_queue *q,
278 struct videobuf_buffer *vb)
279 {
280 /* Get the file handle object and layer object */
281 struct vpbe_fh *fh = q->priv_data;
282 struct vpbe_layer *layer = fh->layer;
283 struct vpbe_display *disp = fh->disp_dev;
284 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
285 unsigned long flags;
286
287 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
288 "vpbe_buffer_queue\n");
289
290 /* add the buffer to the DMA queue */
291 spin_lock_irqsave(&disp->dma_queue_lock, flags);
292 list_add_tail(&vb->queue, &layer->dma_queue);
293 spin_unlock_irqrestore(&disp->dma_queue_lock, flags);
294 /* Change state of the buffer */
295 vb->state = VIDEOBUF_QUEUED;
296 }
297
298 /*
299 * vpbe_buffer_release()
300 * This function is called from the videobuf layer to free memory allocated to
301 * the buffers
302 */
303 static void vpbe_buffer_release(struct videobuf_queue *q,
304 struct videobuf_buffer *vb)
305 {
306 /* Get the file handle object and layer object */
307 struct vpbe_fh *fh = q->priv_data;
308 struct vpbe_layer *layer = fh->layer;
309 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
310
311 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
312 "vpbe_buffer_release\n");
313
314 if (V4L2_MEMORY_USERPTR != layer->memory)
315 videobuf_dma_contig_free(q, vb);
316
317 vb->state = VIDEOBUF_NEEDS_INIT;
318 }
319
320 static struct videobuf_queue_ops video_qops = {
321 .buf_setup = vpbe_buffer_setup,
322 .buf_prepare = vpbe_buffer_prepare,
323 .buf_queue = vpbe_buffer_queue,
324 .buf_release = vpbe_buffer_release,
325 };
326
327 static
328 struct vpbe_layer*
329 _vpbe_display_get_other_win_layer(struct vpbe_display *disp_dev,
330 struct vpbe_layer *layer)
331 {
332 enum vpbe_display_device_id thiswin, otherwin;
333 thiswin = layer->device_id;
334
335 otherwin = (thiswin == VPBE_DISPLAY_DEVICE_0) ?
336 VPBE_DISPLAY_DEVICE_1 : VPBE_DISPLAY_DEVICE_0;
337 return disp_dev->dev[otherwin];
338 }
339
340 static int vpbe_set_osd_display_params(struct vpbe_display *disp_dev,
341 struct vpbe_layer *layer)
342 {
343 struct osd_layer_config *cfg = &layer->layer_info.config;
344 struct osd_state *osd_device = disp_dev->osd_device;
345 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
346 unsigned long addr;
347 int ret;
348
349 addr = videobuf_to_dma_contig(layer->cur_frm);
350 /* Set address in the display registers */
351 osd_device->ops.start_layer(osd_device,
352 layer->layer_info.id,
353 addr,
354 disp_dev->cbcr_ofst);
355
356 ret = osd_device->ops.enable_layer(osd_device,
357 layer->layer_info.id, 0);
358 if (ret < 0) {
359 v4l2_err(&vpbe_dev->v4l2_dev,
360 "Error in enabling osd window layer 0\n");
361 return -1;
362 }
363
364 /* Enable the window */
365 layer->layer_info.enable = 1;
366 if (cfg->pixfmt == PIXFMT_NV12) {
367 struct vpbe_layer *otherlayer =
368 _vpbe_display_get_other_win_layer(disp_dev, layer);
369
370 ret = osd_device->ops.enable_layer(osd_device,
371 otherlayer->layer_info.id, 1);
372 if (ret < 0) {
373 v4l2_err(&vpbe_dev->v4l2_dev,
374 "Error in enabling osd window layer 1\n");
375 return -1;
376 }
377 otherlayer->layer_info.enable = 1;
378 }
379 return 0;
380 }
381
382 static void
383 vpbe_disp_calculate_scale_factor(struct vpbe_display *disp_dev,
384 struct vpbe_layer *layer,
385 int expected_xsize, int expected_ysize)
386 {
387 struct display_layer_info *layer_info = &layer->layer_info;
388 struct v4l2_pix_format *pixfmt = &layer->pix_fmt;
389 struct osd_layer_config *cfg = &layer->layer_info.config;
390 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
391 int calculated_xsize;
392 int h_exp = 0;
393 int v_exp = 0;
394 int h_scale;
395 int v_scale;
396
397 v4l2_std_id standard_id = vpbe_dev->current_timings.timings.std_id;
398
399 /*
400 * Application initially set the image format. Current display
401 * size is obtained from the vpbe display controller. expected_xsize
402 * and expected_ysize are set through S_CROP ioctl. Based on this,
403 * driver will calculate the scale factors for vertical and
404 * horizontal direction so that the image is displayed scaled
405 * and expanded. Application uses expansion to display the image
406 * in a square pixel. Otherwise it is displayed using displays
407 * pixel aspect ratio.It is expected that application chooses
408 * the crop coordinates for cropped or scaled display. if crop
409 * size is less than the image size, it is displayed cropped or
410 * it is displayed scaled and/or expanded.
411 *
412 * to begin with, set the crop window same as expected. Later we
413 * will override with scaled window size
414 */
415
416 cfg->xsize = pixfmt->width;
417 cfg->ysize = pixfmt->height;
418 layer_info->h_zoom = ZOOM_X1; /* no horizontal zoom */
419 layer_info->v_zoom = ZOOM_X1; /* no horizontal zoom */
420 layer_info->h_exp = H_EXP_OFF; /* no horizontal zoom */
421 layer_info->v_exp = V_EXP_OFF; /* no horizontal zoom */
422
423 if (pixfmt->width < expected_xsize) {
424 h_scale = vpbe_dev->current_timings.xres / pixfmt->width;
425 if (h_scale < 2)
426 h_scale = 1;
427 else if (h_scale >= 4)
428 h_scale = 4;
429 else
430 h_scale = 2;
431 cfg->xsize *= h_scale;
432 if (cfg->xsize < expected_xsize) {
433 if ((standard_id & V4L2_STD_525_60) ||
434 (standard_id & V4L2_STD_625_50)) {
435 calculated_xsize = (cfg->xsize *
436 VPBE_DISPLAY_H_EXP_RATIO_N) /
437 VPBE_DISPLAY_H_EXP_RATIO_D;
438 if (calculated_xsize <= expected_xsize) {
439 h_exp = 1;
440 cfg->xsize = calculated_xsize;
441 }
442 }
443 }
444 if (h_scale == 2)
445 layer_info->h_zoom = ZOOM_X2;
446 else if (h_scale == 4)
447 layer_info->h_zoom = ZOOM_X4;
448 if (h_exp)
449 layer_info->h_exp = H_EXP_9_OVER_8;
450 } else {
451 /* no scaling, only cropping. Set display area to crop area */
452 cfg->xsize = expected_xsize;
453 }
454
455 if (pixfmt->height < expected_ysize) {
456 v_scale = expected_ysize / pixfmt->height;
457 if (v_scale < 2)
458 v_scale = 1;
459 else if (v_scale >= 4)
460 v_scale = 4;
461 else
462 v_scale = 2;
463 cfg->ysize *= v_scale;
464 if (cfg->ysize < expected_ysize) {
465 if ((standard_id & V4L2_STD_625_50)) {
466 calculated_xsize = (cfg->ysize *
467 VPBE_DISPLAY_V_EXP_RATIO_N) /
468 VPBE_DISPLAY_V_EXP_RATIO_D;
469 if (calculated_xsize <= expected_ysize) {
470 v_exp = 1;
471 cfg->ysize = calculated_xsize;
472 }
473 }
474 }
475 if (v_scale == 2)
476 layer_info->v_zoom = ZOOM_X2;
477 else if (v_scale == 4)
478 layer_info->v_zoom = ZOOM_X4;
479 if (v_exp)
480 layer_info->h_exp = V_EXP_6_OVER_5;
481 } else {
482 /* no scaling, only cropping. Set display area to crop area */
483 cfg->ysize = expected_ysize;
484 }
485 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
486 "crop display xsize = %d, ysize = %d\n",
487 cfg->xsize, cfg->ysize);
488 }
489
490 static void vpbe_disp_adj_position(struct vpbe_display *disp_dev,
491 struct vpbe_layer *layer,
492 int top, int left)
493 {
494 struct osd_layer_config *cfg = &layer->layer_info.config;
495 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
496
497 cfg->xpos = min((unsigned int)left,
498 vpbe_dev->current_timings.xres - cfg->xsize);
499 cfg->ypos = min((unsigned int)top,
500 vpbe_dev->current_timings.yres - cfg->ysize);
501
502 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
503 "new xpos = %d, ypos = %d\n",
504 cfg->xpos, cfg->ypos);
505 }
506
507 static void vpbe_disp_check_window_params(struct vpbe_display *disp_dev,
508 struct v4l2_rect *c)
509 {
510 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
511
512 if ((c->width == 0) ||
513 ((c->width + c->left) > vpbe_dev->current_timings.xres))
514 c->width = vpbe_dev->current_timings.xres - c->left;
515
516 if ((c->height == 0) || ((c->height + c->top) >
517 vpbe_dev->current_timings.yres))
518 c->height = vpbe_dev->current_timings.yres - c->top;
519
520 /* window height must be even for interlaced display */
521 if (vpbe_dev->current_timings.interlaced)
522 c->height &= (~0x01);
523
524 }
525
526 /**
527 * vpbe_try_format()
528 * If user application provides width and height, and have bytesperline set
529 * to zero, driver calculates bytesperline and sizeimage based on hardware
530 * limits.
531 */
532 static int vpbe_try_format(struct vpbe_display *disp_dev,
533 struct v4l2_pix_format *pixfmt, int check)
534 {
535 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
536 int min_height = 1;
537 int min_width = 32;
538 int max_height;
539 int max_width;
540 int bpp;
541
542 if ((pixfmt->pixelformat != V4L2_PIX_FMT_UYVY) &&
543 (pixfmt->pixelformat != V4L2_PIX_FMT_NV12))
544 /* choose default as V4L2_PIX_FMT_UYVY */
545 pixfmt->pixelformat = V4L2_PIX_FMT_UYVY;
546
547 /* Check the field format */
548 if ((pixfmt->field != V4L2_FIELD_INTERLACED) &&
549 (pixfmt->field != V4L2_FIELD_NONE)) {
550 if (vpbe_dev->current_timings.interlaced)
551 pixfmt->field = V4L2_FIELD_INTERLACED;
552 else
553 pixfmt->field = V4L2_FIELD_NONE;
554 }
555
556 if (pixfmt->field == V4L2_FIELD_INTERLACED)
557 min_height = 2;
558
559 if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
560 bpp = 1;
561 else
562 bpp = 2;
563
564 max_width = vpbe_dev->current_timings.xres;
565 max_height = vpbe_dev->current_timings.yres;
566
567 min_width /= bpp;
568
569 if (!pixfmt->width || (pixfmt->width < min_width) ||
570 (pixfmt->width > max_width)) {
571 pixfmt->width = vpbe_dev->current_timings.xres;
572 }
573
574 if (!pixfmt->height || (pixfmt->height < min_height) ||
575 (pixfmt->height > max_height)) {
576 pixfmt->height = vpbe_dev->current_timings.yres;
577 }
578
579 if (pixfmt->bytesperline < (pixfmt->width * bpp))
580 pixfmt->bytesperline = pixfmt->width * bpp;
581
582 /* Make the bytesperline 32 byte aligned */
583 pixfmt->bytesperline = ((pixfmt->width * bpp + 31) & ~31);
584
585 if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
586 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height +
587 (pixfmt->bytesperline * pixfmt->height >> 1);
588 else
589 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
590
591 return 0;
592 }
593
594 static int vpbe_display_g_priority(struct file *file, void *priv,
595 enum v4l2_priority *p)
596 {
597 struct vpbe_fh *fh = file->private_data;
598 struct vpbe_layer *layer = fh->layer;
599
600 *p = v4l2_prio_max(&layer->prio);
601
602 return 0;
603 }
604
605 static int vpbe_display_s_priority(struct file *file, void *priv,
606 enum v4l2_priority p)
607 {
608 struct vpbe_fh *fh = file->private_data;
609 struct vpbe_layer *layer = fh->layer;
610 int ret;
611
612 ret = v4l2_prio_change(&layer->prio, &fh->prio, p);
613
614 return ret;
615 }
616
617 static int vpbe_display_querycap(struct file *file, void *priv,
618 struct v4l2_capability *cap)
619 {
620 struct vpbe_fh *fh = file->private_data;
621 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
622
623 cap->version = VPBE_DISPLAY_VERSION_CODE;
624 cap->capabilities = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
625 strlcpy(cap->driver, VPBE_DISPLAY_DRIVER, sizeof(cap->driver));
626 strlcpy(cap->bus_info, "platform", sizeof(cap->bus_info));
627 strlcpy(cap->card, vpbe_dev->cfg->module_name, sizeof(cap->card));
628
629 return 0;
630 }
631
632 static int vpbe_display_s_crop(struct file *file, void *priv,
633 struct v4l2_crop *crop)
634 {
635 struct vpbe_fh *fh = file->private_data;
636 struct vpbe_layer *layer = fh->layer;
637 struct vpbe_display *disp_dev = fh->disp_dev;
638 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
639 struct osd_layer_config *cfg = &layer->layer_info.config;
640 struct osd_state *osd_device = disp_dev->osd_device;
641 struct v4l2_rect *rect = &crop->c;
642 int ret;
643
644 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
645 "VIDIOC_S_CROP, layer id = %d\n", layer->device_id);
646
647 if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
648 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buf type\n");
649 return -EINVAL;
650 }
651
652 if (rect->top < 0)
653 rect->top = 0;
654 if (rect->left < 0)
655 rect->left = 0;
656
657 vpbe_disp_check_window_params(disp_dev, rect);
658
659 osd_device->ops.get_layer_config(osd_device,
660 layer->layer_info.id, cfg);
661
662 vpbe_disp_calculate_scale_factor(disp_dev, layer,
663 rect->width,
664 rect->height);
665 vpbe_disp_adj_position(disp_dev, layer, rect->top,
666 rect->left);
667 ret = osd_device->ops.set_layer_config(osd_device,
668 layer->layer_info.id, cfg);
669 if (ret < 0) {
670 v4l2_err(&vpbe_dev->v4l2_dev,
671 "Error in set layer config:\n");
672 return -EINVAL;
673 }
674
675 /* apply zooming and h or v expansion */
676 osd_device->ops.set_zoom(osd_device,
677 layer->layer_info.id,
678 layer->layer_info.h_zoom,
679 layer->layer_info.v_zoom);
680 ret = osd_device->ops.set_vid_expansion(osd_device,
681 layer->layer_info.h_exp,
682 layer->layer_info.v_exp);
683 if (ret < 0) {
684 v4l2_err(&vpbe_dev->v4l2_dev,
685 "Error in set vid expansion:\n");
686 return -EINVAL;
687 }
688
689 if ((layer->layer_info.h_zoom != ZOOM_X1) ||
690 (layer->layer_info.v_zoom != ZOOM_X1) ||
691 (layer->layer_info.h_exp != H_EXP_OFF) ||
692 (layer->layer_info.v_exp != V_EXP_OFF))
693 /* Enable expansion filter */
694 osd_device->ops.set_interpolation_filter(osd_device, 1);
695 else
696 osd_device->ops.set_interpolation_filter(osd_device, 0);
697
698 return 0;
699 }
700
701 static int vpbe_display_g_crop(struct file *file, void *priv,
702 struct v4l2_crop *crop)
703 {
704 struct vpbe_fh *fh = file->private_data;
705 struct vpbe_layer *layer = fh->layer;
706 struct osd_layer_config *cfg = &layer->layer_info.config;
707 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
708 struct osd_state *osd_device = fh->disp_dev->osd_device;
709 struct v4l2_rect *rect = &crop->c;
710 int ret;
711
712 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
713 "VIDIOC_G_CROP, layer id = %d\n",
714 layer->device_id);
715
716 if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
717 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buf type\n");
718 ret = -EINVAL;
719 }
720 osd_device->ops.get_layer_config(osd_device,
721 layer->layer_info.id, cfg);
722 rect->top = cfg->ypos;
723 rect->left = cfg->xpos;
724 rect->width = cfg->xsize;
725 rect->height = cfg->ysize;
726
727 return 0;
728 }
729
730 static int vpbe_display_cropcap(struct file *file, void *priv,
731 struct v4l2_cropcap *cropcap)
732 {
733 struct vpbe_fh *fh = file->private_data;
734 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
735
736 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_CROPCAP ioctl\n");
737
738 cropcap->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
739 cropcap->bounds.left = 0;
740 cropcap->bounds.top = 0;
741 cropcap->bounds.width = vpbe_dev->current_timings.xres;
742 cropcap->bounds.height = vpbe_dev->current_timings.yres;
743 cropcap->pixelaspect = vpbe_dev->current_timings.aspect;
744 cropcap->defrect = cropcap->bounds;
745 return 0;
746 }
747
748 static int vpbe_display_g_fmt(struct file *file, void *priv,
749 struct v4l2_format *fmt)
750 {
751 struct vpbe_fh *fh = file->private_data;
752 struct vpbe_layer *layer = fh->layer;
753 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
754
755 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
756 "VIDIOC_G_FMT, layer id = %d\n",
757 layer->device_id);
758
759 /* If buffer type is video output */
760 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
761 v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
762 return -EINVAL;
763 }
764 /* Fill in the information about format */
765 fmt->fmt.pix = layer->pix_fmt;
766
767 return 0;
768 }
769
770 static int vpbe_display_enum_fmt(struct file *file, void *priv,
771 struct v4l2_fmtdesc *fmt)
772 {
773 struct vpbe_fh *fh = file->private_data;
774 struct vpbe_layer *layer = fh->layer;
775 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
776 unsigned int index = 0;
777
778 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
779 "VIDIOC_ENUM_FMT, layer id = %d\n",
780 layer->device_id);
781 if (fmt->index > 1) {
782 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid format index\n");
783 return -EINVAL;
784 }
785
786 /* Fill in the information about format */
787 index = fmt->index;
788 memset(fmt, 0, sizeof(*fmt));
789 fmt->index = index;
790 fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
791 if (index == 0) {
792 strcpy(fmt->description, "YUV 4:2:2 - UYVY");
793 fmt->pixelformat = V4L2_PIX_FMT_UYVY;
794 } else {
795 strcpy(fmt->description, "Y/CbCr 4:2:0");
796 fmt->pixelformat = V4L2_PIX_FMT_NV12;
797 }
798
799 return 0;
800 }
801
802 static int vpbe_display_s_fmt(struct file *file, void *priv,
803 struct v4l2_format *fmt)
804 {
805 struct vpbe_fh *fh = file->private_data;
806 struct vpbe_layer *layer = fh->layer;
807 struct vpbe_display *disp_dev = fh->disp_dev;
808 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
809 struct osd_layer_config *cfg = &layer->layer_info.config;
810 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
811 struct osd_state *osd_device = disp_dev->osd_device;
812 int ret;
813
814 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
815 "VIDIOC_S_FMT, layer id = %d\n",
816 layer->device_id);
817
818 /* If streaming is started, return error */
819 if (layer->started) {
820 v4l2_err(&vpbe_dev->v4l2_dev, "Streaming is started\n");
821 return -EBUSY;
822 }
823 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
824 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "invalid type\n");
825 return -EINVAL;
826 }
827 /* Check for valid pixel format */
828 ret = vpbe_try_format(disp_dev, pixfmt, 1);
829 if (ret)
830 return ret;
831
832 /* YUV420 is requested, check availability of the
833 other video window */
834
835 layer->pix_fmt = *pixfmt;
836
837 /* Get osd layer config */
838 osd_device->ops.get_layer_config(osd_device,
839 layer->layer_info.id, cfg);
840 /* Store the pixel format in the layer object */
841 cfg->xsize = pixfmt->width;
842 cfg->ysize = pixfmt->height;
843 cfg->line_length = pixfmt->bytesperline;
844 cfg->ypos = 0;
845 cfg->xpos = 0;
846 cfg->interlaced = vpbe_dev->current_timings.interlaced;
847
848 if (V4L2_PIX_FMT_UYVY == pixfmt->pixelformat)
849 cfg->pixfmt = PIXFMT_YCbCrI;
850
851 /* Change of the default pixel format for both video windows */
852 if (V4L2_PIX_FMT_NV12 == pixfmt->pixelformat) {
853 struct vpbe_layer *otherlayer;
854 cfg->pixfmt = PIXFMT_NV12;
855 otherlayer = _vpbe_display_get_other_win_layer(disp_dev,
856 layer);
857 otherlayer->layer_info.config.pixfmt = PIXFMT_NV12;
858 }
859
860 /* Set the layer config in the osd window */
861 ret = osd_device->ops.set_layer_config(osd_device,
862 layer->layer_info.id, cfg);
863 if (ret < 0) {
864 v4l2_err(&vpbe_dev->v4l2_dev,
865 "Error in S_FMT params:\n");
866 return -EINVAL;
867 }
868
869 /* Readback and fill the local copy of current pix format */
870 osd_device->ops.get_layer_config(osd_device,
871 layer->layer_info.id, cfg);
872
873 return 0;
874 }
875
876 static int vpbe_display_try_fmt(struct file *file, void *priv,
877 struct v4l2_format *fmt)
878 {
879 struct vpbe_fh *fh = file->private_data;
880 struct vpbe_display *disp_dev = fh->disp_dev;
881 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
882 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
883
884 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_TRY_FMT\n");
885
886 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
887 v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
888 return -EINVAL;
889 }
890
891 /* Check for valid field format */
892 return vpbe_try_format(disp_dev, pixfmt, 0);
893
894 }
895
896 /**
897 * vpbe_display_s_std - Set the given standard in the encoder
898 *
899 * Sets the standard if supported by the current encoder. Return the status.
900 * 0 - success & -EINVAL on error
901 */
902 static int vpbe_display_s_std(struct file *file, void *priv,
903 v4l2_std_id *std_id)
904 {
905 struct vpbe_fh *fh = priv;
906 struct vpbe_layer *layer = fh->layer;
907 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
908 int ret;
909
910 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_STD\n");
911
912 /* If streaming is started, return error */
913 if (layer->started) {
914 v4l2_err(&vpbe_dev->v4l2_dev, "Streaming is started\n");
915 return -EBUSY;
916 }
917 if (NULL != vpbe_dev->ops.s_std) {
918 ret = vpbe_dev->ops.s_std(vpbe_dev, std_id);
919 if (ret) {
920 v4l2_err(&vpbe_dev->v4l2_dev,
921 "Failed to set standard for sub devices\n");
922 return -EINVAL;
923 }
924 } else {
925 return -EINVAL;
926 }
927
928 return 0;
929 }
930
931 /**
932 * vpbe_display_g_std - Get the standard in the current encoder
933 *
934 * Get the standard in the current encoder. Return the status. 0 - success
935 * -EINVAL on error
936 */
937 static int vpbe_display_g_std(struct file *file, void *priv,
938 v4l2_std_id *std_id)
939 {
940 struct vpbe_fh *fh = priv;
941 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
942
943 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_STD\n");
944
945 /* Get the standard from the current encoder */
946 if (vpbe_dev->current_timings.timings_type & VPBE_ENC_STD) {
947 *std_id = vpbe_dev->current_timings.timings.std_id;
948 return 0;
949 }
950
951 return -EINVAL;
952 }
953
954 /**
955 * vpbe_display_enum_output - enumerate outputs
956 *
957 * Enumerates the outputs available at the vpbe display
958 * returns the status, -EINVAL if end of output list
959 */
960 static int vpbe_display_enum_output(struct file *file, void *priv,
961 struct v4l2_output *output)
962 {
963 struct vpbe_fh *fh = priv;
964 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
965 int ret;
966
967 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_OUTPUT\n");
968
969 /* Enumerate outputs */
970
971 if (NULL == vpbe_dev->ops.enum_outputs)
972 return -EINVAL;
973
974 ret = vpbe_dev->ops.enum_outputs(vpbe_dev, output);
975 if (ret) {
976 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
977 "Failed to enumerate outputs\n");
978 return -EINVAL;
979 }
980
981 return 0;
982 }
983
984 /**
985 * vpbe_display_s_output - Set output to
986 * the output specified by the index
987 */
988 static int vpbe_display_s_output(struct file *file, void *priv,
989 unsigned int i)
990 {
991 struct vpbe_fh *fh = priv;
992 struct vpbe_layer *layer = fh->layer;
993 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
994 int ret;
995
996 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_OUTPUT\n");
997 /* If streaming is started, return error */
998 if (layer->started) {
999 v4l2_err(&vpbe_dev->v4l2_dev, "Streaming is started\n");
1000 return -EBUSY;
1001 }
1002 if (NULL == vpbe_dev->ops.set_output)
1003 return -EINVAL;
1004
1005 ret = vpbe_dev->ops.set_output(vpbe_dev, i);
1006 if (ret) {
1007 v4l2_err(&vpbe_dev->v4l2_dev,
1008 "Failed to set output for sub devices\n");
1009 return -EINVAL;
1010 }
1011
1012 return 0;
1013 }
1014
1015 /**
1016 * vpbe_display_g_output - Get output from subdevice
1017 * for a given by the index
1018 */
1019 static int vpbe_display_g_output(struct file *file, void *priv,
1020 unsigned int *i)
1021 {
1022 struct vpbe_fh *fh = priv;
1023 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1024
1025 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_OUTPUT\n");
1026 /* Get the standard from the current encoder */
1027 *i = vpbe_dev->current_out_index;
1028
1029 return 0;
1030 }
1031
1032 /**
1033 * vpbe_display_enum_dv_presets - Enumerate the dv presets
1034 *
1035 * enum the preset in the current encoder. Return the status. 0 - success
1036 * -EINVAL on error
1037 */
1038 static int
1039 vpbe_display_enum_dv_presets(struct file *file, void *priv,
1040 struct v4l2_dv_enum_preset *preset)
1041 {
1042 struct vpbe_fh *fh = priv;
1043 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1044 int ret;
1045
1046 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_DV_PRESETS\n");
1047
1048 /* Enumerate outputs */
1049 if (NULL == vpbe_dev->ops.enum_dv_presets)
1050 return -EINVAL;
1051
1052 ret = vpbe_dev->ops.enum_dv_presets(vpbe_dev, preset);
1053 if (ret) {
1054 v4l2_err(&vpbe_dev->v4l2_dev,
1055 "Failed to enumerate dv presets info\n");
1056 return -EINVAL;
1057 }
1058
1059 return 0;
1060 }
1061
1062 /**
1063 * vpbe_display_s_dv_preset - Set the dv presets
1064 *
1065 * Set the preset in the current encoder. Return the status. 0 - success
1066 * -EINVAL on error
1067 */
1068 static int
1069 vpbe_display_s_dv_preset(struct file *file, void *priv,
1070 struct v4l2_dv_preset *preset)
1071 {
1072 struct vpbe_fh *fh = priv;
1073 struct vpbe_layer *layer = fh->layer;
1074 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1075 int ret;
1076
1077 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_DV_PRESETS\n");
1078
1079
1080 /* If streaming is started, return error */
1081 if (layer->started) {
1082 v4l2_err(&vpbe_dev->v4l2_dev, "Streaming is started\n");
1083 return -EBUSY;
1084 }
1085
1086 /* Set the given standard in the encoder */
1087 if (NULL != vpbe_dev->ops.s_dv_preset)
1088 return -EINVAL;
1089
1090 ret = vpbe_dev->ops.s_dv_preset(vpbe_dev, preset);
1091 if (ret) {
1092 v4l2_err(&vpbe_dev->v4l2_dev,
1093 "Failed to set the dv presets info\n");
1094 return -EINVAL;
1095 }
1096 /* set the current norm to zero to be consistent. If STD is used
1097 * v4l2 layer will set the norm properly on successful s_std call
1098 */
1099 layer->video_dev.current_norm = 0;
1100
1101 return 0;
1102 }
1103
1104 /**
1105 * vpbe_display_g_dv_preset - Set the dv presets
1106 *
1107 * Get the preset in the current encoder. Return the status. 0 - success
1108 * -EINVAL on error
1109 */
1110 static int
1111 vpbe_display_g_dv_preset(struct file *file, void *priv,
1112 struct v4l2_dv_preset *dv_preset)
1113 {
1114 struct vpbe_fh *fh = priv;
1115 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1116
1117 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_DV_PRESETS\n");
1118
1119 /* Get the given standard in the encoder */
1120
1121 if (vpbe_dev->current_timings.timings_type &
1122 VPBE_ENC_DV_PRESET) {
1123 dv_preset->preset =
1124 vpbe_dev->current_timings.timings.dv_preset;
1125 } else {
1126 return -EINVAL;
1127 }
1128
1129 return 0;
1130 }
1131
1132 static int vpbe_display_streamoff(struct file *file, void *priv,
1133 enum v4l2_buf_type buf_type)
1134 {
1135 struct vpbe_fh *fh = file->private_data;
1136 struct vpbe_layer *layer = fh->layer;
1137 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1138 struct osd_state *osd_device = fh->disp_dev->osd_device;
1139 int ret;
1140
1141 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1142 "VIDIOC_STREAMOFF,layer id = %d\n",
1143 layer->device_id);
1144
1145 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != buf_type) {
1146 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buffer type\n");
1147 return -EINVAL;
1148 }
1149
1150 /* If io is allowed for this file handle, return error */
1151 if (!fh->io_allowed) {
1152 v4l2_err(&vpbe_dev->v4l2_dev, "No io_allowed\n");
1153 return -EACCES;
1154 }
1155
1156 /* If streaming is not started, return error */
1157 if (!layer->started) {
1158 v4l2_err(&vpbe_dev->v4l2_dev, "streaming not started in layer"
1159 " id = %d\n", layer->device_id);
1160 return -EINVAL;
1161 }
1162
1163 osd_device->ops.disable_layer(osd_device,
1164 layer->layer_info.id);
1165 layer->started = 0;
1166 ret = videobuf_streamoff(&layer->buffer_queue);
1167
1168 return ret;
1169 }
1170
1171 static int vpbe_display_streamon(struct file *file, void *priv,
1172 enum v4l2_buf_type buf_type)
1173 {
1174 struct vpbe_fh *fh = file->private_data;
1175 struct vpbe_layer *layer = fh->layer;
1176 struct vpbe_display *disp_dev = fh->disp_dev;
1177 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1178 struct osd_state *osd_device = disp_dev->osd_device;
1179 int ret;
1180
1181 osd_device->ops.disable_layer(osd_device,
1182 layer->layer_info.id);
1183
1184 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_STREAMON, layerid=%d\n",
1185 layer->device_id);
1186
1187 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != buf_type) {
1188 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buffer type\n");
1189 return -EINVAL;
1190 }
1191
1192 /* If file handle is not allowed IO, return error */
1193 if (!fh->io_allowed) {
1194 v4l2_err(&vpbe_dev->v4l2_dev, "No io_allowed\n");
1195 return -EACCES;
1196 }
1197 /* If Streaming is already started, return error */
1198 if (layer->started) {
1199 v4l2_err(&vpbe_dev->v4l2_dev, "layer is already streaming\n");
1200 return -EBUSY;
1201 }
1202
1203 /*
1204 * Call videobuf_streamon to start streaming
1205 * in videobuf
1206 */
1207 ret = videobuf_streamon(&layer->buffer_queue);
1208 if (ret) {
1209 v4l2_err(&vpbe_dev->v4l2_dev,
1210 "error in videobuf_streamon\n");
1211 return ret;
1212 }
1213 /* If buffer queue is empty, return error */
1214 if (list_empty(&layer->dma_queue)) {
1215 v4l2_err(&vpbe_dev->v4l2_dev, "buffer queue is empty\n");
1216 goto streamoff;
1217 }
1218 /* Get the next frame from the buffer queue */
1219 layer->next_frm = layer->cur_frm = list_entry(layer->dma_queue.next,
1220 struct videobuf_buffer, queue);
1221 /* Remove buffer from the buffer queue */
1222 list_del(&layer->cur_frm->queue);
1223 /* Mark state of the current frame to active */
1224 layer->cur_frm->state = VIDEOBUF_ACTIVE;
1225 /* Initialize field_id and started member */
1226 layer->field_id = 0;
1227
1228 /* Set parameters in OSD and VENC */
1229 ret = vpbe_set_osd_display_params(disp_dev, layer);
1230 if (ret < 0)
1231 goto streamoff;
1232
1233 /*
1234 * if request format is yuv420 semiplanar, need to
1235 * enable both video windows
1236 */
1237 layer->started = 1;
1238
1239 layer->layer_first_int = 1;
1240
1241 return ret;
1242 streamoff:
1243 ret = videobuf_streamoff(&layer->buffer_queue);
1244 return ret;
1245 }
1246
1247 static int vpbe_display_dqbuf(struct file *file, void *priv,
1248 struct v4l2_buffer *buf)
1249 {
1250 struct vpbe_fh *fh = file->private_data;
1251 struct vpbe_layer *layer = fh->layer;
1252 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1253 int ret;
1254
1255 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1256 "VIDIOC_DQBUF, layer id = %d\n",
1257 layer->device_id);
1258
1259 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != buf->type) {
1260 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buffer type\n");
1261 return -EINVAL;
1262 }
1263 /* If this file handle is not allowed to do IO, return error */
1264 if (!fh->io_allowed) {
1265 v4l2_err(&vpbe_dev->v4l2_dev, "No io_allowed\n");
1266 return -EACCES;
1267 }
1268 if (file->f_flags & O_NONBLOCK)
1269 /* Call videobuf_dqbuf for non blocking mode */
1270 ret = videobuf_dqbuf(&layer->buffer_queue, buf, 1);
1271 else
1272 /* Call videobuf_dqbuf for blocking mode */
1273 ret = videobuf_dqbuf(&layer->buffer_queue, buf, 0);
1274
1275 return ret;
1276 }
1277
1278 static int vpbe_display_qbuf(struct file *file, void *priv,
1279 struct v4l2_buffer *p)
1280 {
1281 struct vpbe_fh *fh = file->private_data;
1282 struct vpbe_layer *layer = fh->layer;
1283 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1284
1285 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1286 "VIDIOC_QBUF, layer id = %d\n",
1287 layer->device_id);
1288
1289 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != p->type) {
1290 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buffer type\n");
1291 return -EINVAL;
1292 }
1293
1294 /* If this file handle is not allowed to do IO, return error */
1295 if (!fh->io_allowed) {
1296 v4l2_err(&vpbe_dev->v4l2_dev, "No io_allowed\n");
1297 return -EACCES;
1298 }
1299
1300 return videobuf_qbuf(&layer->buffer_queue, p);
1301 }
1302
1303 static int vpbe_display_querybuf(struct file *file, void *priv,
1304 struct v4l2_buffer *buf)
1305 {
1306 struct vpbe_fh *fh = file->private_data;
1307 struct vpbe_layer *layer = fh->layer;
1308 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1309 int ret;
1310
1311 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1312 "VIDIOC_QUERYBUF, layer id = %d\n",
1313 layer->device_id);
1314
1315 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != buf->type) {
1316 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buffer type\n");
1317 return -EINVAL;
1318 }
1319
1320 /* Call videobuf_querybuf to get information */
1321 ret = videobuf_querybuf(&layer->buffer_queue, buf);
1322
1323 return ret;
1324 }
1325
1326 static int vpbe_display_reqbufs(struct file *file, void *priv,
1327 struct v4l2_requestbuffers *req_buf)
1328 {
1329 struct vpbe_fh *fh = file->private_data;
1330 struct vpbe_layer *layer = fh->layer;
1331 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1332 int ret;
1333
1334 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_reqbufs\n");
1335
1336 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != req_buf->type) {
1337 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buffer type\n");
1338 return -EINVAL;
1339 }
1340
1341 /* If io users of the layer is not zero, return error */
1342 if (0 != layer->io_usrs) {
1343 v4l2_err(&vpbe_dev->v4l2_dev, "not IO user\n");
1344 return -EBUSY;
1345 }
1346 /* Initialize videobuf queue as per the buffer type */
1347 videobuf_queue_dma_contig_init(&layer->buffer_queue,
1348 &video_qops,
1349 vpbe_dev->pdev,
1350 &layer->irqlock,
1351 V4L2_BUF_TYPE_VIDEO_OUTPUT,
1352 layer->pix_fmt.field,
1353 sizeof(struct videobuf_buffer),
1354 fh, NULL);
1355
1356 /* Set io allowed member of file handle to TRUE */
1357 fh->io_allowed = 1;
1358 /* Increment io usrs member of layer object to 1 */
1359 layer->io_usrs = 1;
1360 /* Store type of memory requested in layer object */
1361 layer->memory = req_buf->memory;
1362 /* Initialize buffer queue */
1363 INIT_LIST_HEAD(&layer->dma_queue);
1364 /* Allocate buffers */
1365 ret = videobuf_reqbufs(&layer->buffer_queue, req_buf);
1366
1367 return ret;
1368 }
1369
1370 /*
1371 * vpbe_display_mmap()
1372 * It is used to map kernel space buffers into user spaces
1373 */
1374 static int vpbe_display_mmap(struct file *filep, struct vm_area_struct *vma)
1375 {
1376 /* Get the layer object and file handle object */
1377 struct vpbe_fh *fh = filep->private_data;
1378 struct vpbe_layer *layer = fh->layer;
1379 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1380
1381 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_mmap\n");
1382
1383 return videobuf_mmap_mapper(&layer->buffer_queue, vma);
1384 }
1385
1386 /* vpbe_display_poll(): It is used for select/poll system call
1387 */
1388 static unsigned int vpbe_display_poll(struct file *filep, poll_table *wait)
1389 {
1390 struct vpbe_fh *fh = filep->private_data;
1391 struct vpbe_layer *layer = fh->layer;
1392 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1393 unsigned int err = 0;
1394
1395 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_poll\n");
1396 if (layer->started)
1397 err = videobuf_poll_stream(filep, &layer->buffer_queue, wait);
1398 return err;
1399 }
1400
1401 /*
1402 * vpbe_display_open()
1403 * It creates object of file handle structure and stores it in private_data
1404 * member of filepointer
1405 */
1406 static int vpbe_display_open(struct file *file)
1407 {
1408 struct vpbe_fh *fh = NULL;
1409 struct vpbe_layer *layer = video_drvdata(file);
1410 struct vpbe_display *disp_dev = layer->disp_dev;
1411 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1412 struct osd_state *osd_device = disp_dev->osd_device;
1413 int err;
1414
1415 /* Allocate memory for the file handle object */
1416 fh = kmalloc(sizeof(struct vpbe_fh), GFP_KERNEL);
1417 if (fh == NULL) {
1418 v4l2_err(&vpbe_dev->v4l2_dev,
1419 "unable to allocate memory for file handle object\n");
1420 return -ENOMEM;
1421 }
1422 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1423 "vpbe display open plane = %d\n",
1424 layer->device_id);
1425
1426 /* store pointer to fh in private_data member of filep */
1427 file->private_data = fh;
1428 fh->layer = layer;
1429 fh->disp_dev = disp_dev;
1430
1431 if (!layer->usrs) {
1432
1433 /* First claim the layer for this device */
1434 err = osd_device->ops.request_layer(osd_device,
1435 layer->layer_info.id);
1436 if (err < 0) {
1437 /* Couldn't get layer */
1438 v4l2_err(&vpbe_dev->v4l2_dev,
1439 "Display Manager failed to allocate layer\n");
1440 kfree(fh);
1441 return -EINVAL;
1442 }
1443 }
1444 /* Increment layer usrs counter */
1445 layer->usrs++;
1446 /* Set io_allowed member to false */
1447 fh->io_allowed = 0;
1448 /* Initialize priority of this instance to default priority */
1449 fh->prio = V4L2_PRIORITY_UNSET;
1450 v4l2_prio_open(&layer->prio, &fh->prio);
1451 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1452 "vpbe display device opened successfully\n");
1453 return 0;
1454 }
1455
1456 /*
1457 * vpbe_display_release()
1458 * This function deletes buffer queue, frees the buffers and the davinci
1459 * display file * handle
1460 */
1461 static int vpbe_display_release(struct file *file)
1462 {
1463 /* Get the layer object and file handle object */
1464 struct vpbe_fh *fh = file->private_data;
1465 struct vpbe_layer *layer = fh->layer;
1466 struct osd_layer_config *cfg = &layer->layer_info.config;
1467 struct vpbe_display *disp_dev = fh->disp_dev;
1468 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1469 struct osd_state *osd_device = disp_dev->osd_device;
1470
1471 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_release\n");
1472
1473 /* if this instance is doing IO */
1474 if (fh->io_allowed) {
1475 /* Reset io_usrs member of layer object */
1476 layer->io_usrs = 0;
1477
1478 osd_device->ops.disable_layer(osd_device,
1479 layer->layer_info.id);
1480 layer->started = 0;
1481 /* Free buffers allocated */
1482 videobuf_queue_cancel(&layer->buffer_queue);
1483 videobuf_mmap_free(&layer->buffer_queue);
1484 }
1485
1486 /* Decrement layer usrs counter */
1487 layer->usrs--;
1488 /* If this file handle has initialize encoder device, reset it */
1489 if (!layer->usrs) {
1490 if (cfg->pixfmt == PIXFMT_NV12) {
1491 struct vpbe_layer *otherlayer;
1492 otherlayer =
1493 _vpbe_display_get_other_win_layer(disp_dev, layer);
1494 osd_device->ops.disable_layer(osd_device,
1495 otherlayer->layer_info.id);
1496 osd_device->ops.release_layer(osd_device,
1497 otherlayer->layer_info.id);
1498 }
1499 osd_device->ops.disable_layer(osd_device,
1500 layer->layer_info.id);
1501 osd_device->ops.release_layer(osd_device,
1502 layer->layer_info.id);
1503 }
1504 /* Close the priority */
1505 v4l2_prio_close(&layer->prio, fh->prio);
1506 file->private_data = NULL;
1507
1508 /* Free memory allocated to file handle object */
1509 kfree(fh);
1510
1511 disp_dev->cbcr_ofst = 0;
1512
1513 return 0;
1514 }
1515
1516 #ifdef CONFIG_VIDEO_ADV_DEBUG
1517 static int vpbe_display_g_register(struct file *file, void *priv,
1518 struct v4l2_dbg_register *reg)
1519 {
1520 struct v4l2_dbg_match *match = &reg->match;
1521
1522 if (match->type >= 2) {
1523 v4l2_subdev_call(vpbe_dev->venc,
1524 core,
1525 g_register,
1526 reg);
1527 }
1528
1529 return 0;
1530 }
1531
1532 static int vpbe_display_s_register(struct file *file, void *priv,
1533 struct v4l2_dbg_register *reg)
1534 {
1535 return 0;
1536 }
1537 #endif
1538
1539 /* vpbe capture ioctl operations */
1540 static const struct v4l2_ioctl_ops vpbe_ioctl_ops = {
1541 .vidioc_querycap = vpbe_display_querycap,
1542 .vidioc_g_fmt_vid_out = vpbe_display_g_fmt,
1543 .vidioc_enum_fmt_vid_out = vpbe_display_enum_fmt,
1544 .vidioc_s_fmt_vid_out = vpbe_display_s_fmt,
1545 .vidioc_try_fmt_vid_out = vpbe_display_try_fmt,
1546 .vidioc_reqbufs = vpbe_display_reqbufs,
1547 .vidioc_querybuf = vpbe_display_querybuf,
1548 .vidioc_qbuf = vpbe_display_qbuf,
1549 .vidioc_dqbuf = vpbe_display_dqbuf,
1550 .vidioc_streamon = vpbe_display_streamon,
1551 .vidioc_streamoff = vpbe_display_streamoff,
1552 .vidioc_cropcap = vpbe_display_cropcap,
1553 .vidioc_g_crop = vpbe_display_g_crop,
1554 .vidioc_s_crop = vpbe_display_s_crop,
1555 .vidioc_g_priority = vpbe_display_g_priority,
1556 .vidioc_s_priority = vpbe_display_s_priority,
1557 .vidioc_s_std = vpbe_display_s_std,
1558 .vidioc_g_std = vpbe_display_g_std,
1559 .vidioc_enum_output = vpbe_display_enum_output,
1560 .vidioc_s_output = vpbe_display_s_output,
1561 .vidioc_g_output = vpbe_display_g_output,
1562 .vidioc_s_dv_preset = vpbe_display_s_dv_preset,
1563 .vidioc_g_dv_preset = vpbe_display_g_dv_preset,
1564 .vidioc_enum_dv_presets = vpbe_display_enum_dv_presets,
1565 #ifdef CONFIG_VIDEO_ADV_DEBUG
1566 .vidioc_g_register = vpbe_display_g_register,
1567 .vidioc_s_register = vpbe_display_s_register,
1568 #endif
1569 };
1570
1571 static struct v4l2_file_operations vpbe_fops = {
1572 .owner = THIS_MODULE,
1573 .open = vpbe_display_open,
1574 .release = vpbe_display_release,
1575 .unlocked_ioctl = video_ioctl2,
1576 .mmap = vpbe_display_mmap,
1577 .poll = vpbe_display_poll
1578 };
1579
1580 static int vpbe_device_get(struct device *dev, void *data)
1581 {
1582 struct platform_device *pdev = to_platform_device(dev);
1583 struct vpbe_display *vpbe_disp = data;
1584
1585 if (strcmp("vpbe_controller", pdev->name) == 0)
1586 vpbe_disp->vpbe_dev = platform_get_drvdata(pdev);
1587
1588 if (strcmp("vpbe-osd", pdev->name) == 0)
1589 vpbe_disp->osd_device = platform_get_drvdata(pdev);
1590
1591 return 0;
1592 }
1593
1594 static __devinit int init_vpbe_layer(int i, struct vpbe_display *disp_dev,
1595 struct platform_device *pdev)
1596 {
1597 struct vpbe_layer *vpbe_display_layer = NULL;
1598 struct video_device *vbd = NULL;
1599
1600 /* Allocate memory for four plane display objects */
1601
1602 disp_dev->dev[i] =
1603 kzalloc(sizeof(struct vpbe_layer), GFP_KERNEL);
1604
1605 /* If memory allocation fails, return error */
1606 if (!disp_dev->dev[i]) {
1607 printk(KERN_ERR "ran out of memory\n");
1608 return -ENOMEM;
1609 }
1610 spin_lock_init(&disp_dev->dev[i]->irqlock);
1611 mutex_init(&disp_dev->dev[i]->opslock);
1612
1613 /* Get the pointer to the layer object */
1614 vpbe_display_layer = disp_dev->dev[i];
1615 vbd = &vpbe_display_layer->video_dev;
1616 /* Initialize field of video device */
1617 vbd->release = video_device_release_empty;
1618 vbd->fops = &vpbe_fops;
1619 vbd->ioctl_ops = &vpbe_ioctl_ops;
1620 vbd->minor = -1;
1621 vbd->v4l2_dev = &disp_dev->vpbe_dev->v4l2_dev;
1622 vbd->lock = &vpbe_display_layer->opslock;
1623
1624 if (disp_dev->vpbe_dev->current_timings.timings_type &
1625 VPBE_ENC_STD) {
1626 vbd->tvnorms = (V4L2_STD_525_60 | V4L2_STD_625_50);
1627 vbd->current_norm =
1628 disp_dev->vpbe_dev->
1629 current_timings.timings.std_id;
1630 } else
1631 vbd->current_norm = 0;
1632
1633 snprintf(vbd->name, sizeof(vbd->name),
1634 "DaVinci_VPBE Display_DRIVER_V%d.%d.%d",
1635 (VPBE_DISPLAY_VERSION_CODE >> 16) & 0xff,
1636 (VPBE_DISPLAY_VERSION_CODE >> 8) & 0xff,
1637 (VPBE_DISPLAY_VERSION_CODE) & 0xff);
1638
1639 vpbe_display_layer->device_id = i;
1640
1641 vpbe_display_layer->layer_info.id =
1642 ((i == VPBE_DISPLAY_DEVICE_0) ? WIN_VID0 : WIN_VID1);
1643
1644 /* Initialize prio member of layer object */
1645 v4l2_prio_init(&vpbe_display_layer->prio);
1646
1647 return 0;
1648 }
1649
1650 static __devinit int register_device(struct vpbe_layer *vpbe_display_layer,
1651 struct vpbe_display *disp_dev,
1652 struct platform_device *pdev) {
1653 int err;
1654
1655 v4l2_info(&disp_dev->vpbe_dev->v4l2_dev,
1656 "Trying to register VPBE display device.\n");
1657 v4l2_info(&disp_dev->vpbe_dev->v4l2_dev,
1658 "layer=%x,layer->video_dev=%x\n",
1659 (int)vpbe_display_layer,
1660 (int)&vpbe_display_layer->video_dev);
1661
1662 err = video_register_device(&vpbe_display_layer->video_dev,
1663 VFL_TYPE_GRABBER,
1664 -1);
1665 if (err)
1666 return -ENODEV;
1667
1668 vpbe_display_layer->disp_dev = disp_dev;
1669 /* set the driver data in platform device */
1670 platform_set_drvdata(pdev, disp_dev);
1671 video_set_drvdata(&vpbe_display_layer->video_dev,
1672 vpbe_display_layer);
1673
1674 return 0;
1675 }
1676
1677
1678
1679 /*
1680 * vpbe_display_probe()
1681 * This function creates device entries by register itself to the V4L2 driver
1682 * and initializes fields of each layer objects
1683 */
1684 static __devinit int vpbe_display_probe(struct platform_device *pdev)
1685 {
1686 struct vpbe_layer *vpbe_display_layer;
1687 struct vpbe_display *disp_dev;
1688 struct resource *res = NULL;
1689 int k;
1690 int i;
1691 int err;
1692 int irq;
1693
1694 printk(KERN_DEBUG "vpbe_display_probe\n");
1695 /* Allocate memory for vpbe_display */
1696 disp_dev = kzalloc(sizeof(struct vpbe_display), GFP_KERNEL);
1697 if (!disp_dev) {
1698 printk(KERN_ERR "ran out of memory\n");
1699 return -ENOMEM;
1700 }
1701
1702 spin_lock_init(&disp_dev->dma_queue_lock);
1703 /*
1704 * Scan all the platform devices to find the vpbe
1705 * controller device and get the vpbe_dev object
1706 */
1707 err = bus_for_each_dev(&platform_bus_type, NULL, disp_dev,
1708 vpbe_device_get);
1709 if (err < 0)
1710 return err;
1711 /* Initialize the vpbe display controller */
1712 if (NULL != disp_dev->vpbe_dev->ops.initialize) {
1713 err = disp_dev->vpbe_dev->ops.initialize(&pdev->dev,
1714 disp_dev->vpbe_dev);
1715 if (err) {
1716 v4l2_err(&disp_dev->vpbe_dev->v4l2_dev,
1717 "Error initing vpbe\n");
1718 err = -ENOMEM;
1719 goto probe_out;
1720 }
1721 }
1722
1723 for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1724 if (init_vpbe_layer(i, disp_dev, pdev)) {
1725 err = -ENODEV;
1726 goto probe_out;
1727 }
1728 }
1729
1730 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1731 if (!res) {
1732 v4l2_err(&disp_dev->vpbe_dev->v4l2_dev,
1733 "Unable to get VENC interrupt resource\n");
1734 err = -ENODEV;
1735 goto probe_out;
1736 }
1737
1738 irq = res->start;
1739 if (request_irq(irq, venc_isr, IRQF_DISABLED, VPBE_DISPLAY_DRIVER,
1740 disp_dev)) {
1741 v4l2_err(&disp_dev->vpbe_dev->v4l2_dev,
1742 "Unable to request interrupt\n");
1743 err = -ENODEV;
1744 goto probe_out;
1745 }
1746
1747 for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1748 if (register_device(disp_dev->dev[i], disp_dev, pdev)) {
1749 err = -ENODEV;
1750 goto probe_out;
1751 }
1752 }
1753
1754 printk(KERN_DEBUG "Successfully completed the probing of vpbe v4l2 device\n");
1755 return 0;
1756
1757 probe_out:
1758 free_irq(res->start, disp_dev);
1759 for (k = 0; k < VPBE_DISPLAY_MAX_DEVICES; k++) {
1760 /* Get the pointer to the layer object */
1761 vpbe_display_layer = disp_dev->dev[k];
1762 /* Unregister video device */
1763 if (vpbe_display_layer) {
1764 video_unregister_device(
1765 &vpbe_display_layer->video_dev);
1766 kfree(disp_dev->dev[k]);
1767 }
1768 }
1769 kfree(disp_dev);
1770 return err;
1771 }
1772
1773 /*
1774 * vpbe_display_remove()
1775 * It un-register hardware layer from V4L2 driver
1776 */
1777 static int vpbe_display_remove(struct platform_device *pdev)
1778 {
1779 struct vpbe_layer *vpbe_display_layer;
1780 struct vpbe_display *disp_dev = platform_get_drvdata(pdev);
1781 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1782 struct resource *res;
1783 int i;
1784
1785 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_remove\n");
1786
1787 /* unregister irq */
1788 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1789 free_irq(res->start, disp_dev);
1790
1791 /* deinitialize the vpbe display controller */
1792 if (NULL != vpbe_dev->ops.deinitialize)
1793 vpbe_dev->ops.deinitialize(&pdev->dev, vpbe_dev);
1794 /* un-register device */
1795 for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1796 /* Get the pointer to the layer object */
1797 vpbe_display_layer = disp_dev->dev[i];
1798 /* Unregister video device */
1799 video_unregister_device(&vpbe_display_layer->video_dev);
1800
1801 }
1802 for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1803 kfree(disp_dev->dev[i]);
1804 disp_dev->dev[i] = NULL;
1805 }
1806
1807 return 0;
1808 }
1809
1810 static struct platform_driver vpbe_display_driver = {
1811 .driver = {
1812 .name = VPBE_DISPLAY_DRIVER,
1813 .owner = THIS_MODULE,
1814 .bus = &platform_bus_type,
1815 },
1816 .probe = vpbe_display_probe,
1817 .remove = __devexit_p(vpbe_display_remove),
1818 };
1819
1820 /*
1821 * vpbe_display_init()
1822 * This function registers device and driver to the kernel, requests irq
1823 * handler and allocates memory for layer objects
1824 */
1825 static __devinit int vpbe_display_init(void)
1826 {
1827 int err;
1828
1829 printk(KERN_DEBUG "vpbe_display_init\n");
1830
1831 /* Register driver to the kernel */
1832 err = platform_driver_register(&vpbe_display_driver);
1833 if (0 != err)
1834 return err;
1835
1836 printk(KERN_DEBUG "vpbe_display_init:"
1837 "VPBE V4L2 Display Driver V1.0 loaded\n");
1838 return 0;
1839 }
1840
1841 /*
1842 * vpbe_display_cleanup()
1843 * This function un-registers device and driver to the kernel, frees requested
1844 * irq handler and de-allocates memory allocated for layer objects.
1845 */
1846 static void vpbe_display_cleanup(void)
1847 {
1848 printk(KERN_DEBUG "vpbe_display_cleanup\n");
1849
1850 /* platform driver unregister */
1851 platform_driver_unregister(&vpbe_display_driver);
1852 }
1853
1854 /* Function for module initialization and cleanup */
1855 module_init(vpbe_display_init);
1856 module_exit(vpbe_display_cleanup);
1857
1858 MODULE_DESCRIPTION("TI DM644x/DM355/DM365 VPBE Display controller");
1859 MODULE_LICENSE("GPL");
1860 MODULE_AUTHOR("Texas Instruments");
linux-next