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Merge branch 'stable-4.7' of git://git.infradead.org/users/pcmoore/audit
[deliverable/linux.git] / drivers / media / platform / davinci / vpbe_display.c
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_DEFAULT_NUM_BUFS 3
47
48 module_param(debug, int, 0644);
49
50 static int vpbe_set_osd_display_params(struct vpbe_display *disp_dev,
51 struct vpbe_layer *layer);
52
53 static int venc_is_second_field(struct vpbe_display *disp_dev)
54 {
55 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
56 int ret;
57 int val;
58
59 ret = v4l2_subdev_call(vpbe_dev->venc,
60 core,
61 ioctl,
62 VENC_GET_FLD,
63 &val);
64 if (ret < 0) {
65 v4l2_err(&vpbe_dev->v4l2_dev,
66 "Error in getting Field ID 0\n");
67 }
68 return val;
69 }
70
71 static void vpbe_isr_even_field(struct vpbe_display *disp_obj,
72 struct vpbe_layer *layer)
73 {
74 if (layer->cur_frm == layer->next_frm)
75 return;
76
77 layer->cur_frm->vb.vb2_buf.timestamp = ktime_get_ns();
78 vb2_buffer_done(&layer->cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE);
79 /* Make cur_frm pointing to next_frm */
80 layer->cur_frm = layer->next_frm;
81 }
82
83 static void vpbe_isr_odd_field(struct vpbe_display *disp_obj,
84 struct vpbe_layer *layer)
85 {
86 struct osd_state *osd_device = disp_obj->osd_device;
87 unsigned long addr;
88
89 spin_lock(&disp_obj->dma_queue_lock);
90 if (list_empty(&layer->dma_queue) ||
91 (layer->cur_frm != layer->next_frm)) {
92 spin_unlock(&disp_obj->dma_queue_lock);
93 return;
94 }
95 /*
96 * one field is displayed configure
97 * the next frame if it is available
98 * otherwise hold on current frame
99 * Get next from the buffer queue
100 */
101 layer->next_frm = list_entry(layer->dma_queue.next,
102 struct vpbe_disp_buffer, list);
103 /* Remove that from the buffer queue */
104 list_del(&layer->next_frm->list);
105 spin_unlock(&disp_obj->dma_queue_lock);
106 /* Mark state of the frame to active */
107 layer->next_frm->vb.vb2_buf.state = VB2_BUF_STATE_ACTIVE;
108 addr = vb2_dma_contig_plane_dma_addr(&layer->next_frm->vb.vb2_buf, 0);
109 osd_device->ops.start_layer(osd_device,
110 layer->layer_info.id,
111 addr,
112 disp_obj->cbcr_ofst);
113 }
114
115 /* interrupt service routine */
116 static irqreturn_t venc_isr(int irq, void *arg)
117 {
118 struct vpbe_display *disp_dev = (struct vpbe_display *)arg;
119 struct vpbe_layer *layer;
120 static unsigned last_event;
121 unsigned event = 0;
122 int fid;
123 int i;
124
125 if ((NULL == arg) || (NULL == disp_dev->dev[0]))
126 return IRQ_HANDLED;
127
128 if (venc_is_second_field(disp_dev))
129 event |= VENC_SECOND_FIELD;
130 else
131 event |= VENC_FIRST_FIELD;
132
133 if (event == (last_event & ~VENC_END_OF_FRAME)) {
134 /*
135 * If the display is non-interlaced, then we need to flag the
136 * end-of-frame event at every interrupt regardless of the
137 * value of the FIDST bit. We can conclude that the display is
138 * non-interlaced if the value of the FIDST bit is unchanged
139 * from the previous interrupt.
140 */
141 event |= VENC_END_OF_FRAME;
142 } else if (event == VENC_SECOND_FIELD) {
143 /* end-of-frame for interlaced display */
144 event |= VENC_END_OF_FRAME;
145 }
146 last_event = event;
147
148 for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
149 layer = disp_dev->dev[i];
150
151 if (!vb2_start_streaming_called(&layer->buffer_queue))
152 continue;
153
154 if (layer->layer_first_int) {
155 layer->layer_first_int = 0;
156 continue;
157 }
158 /* Check the field format */
159 if ((V4L2_FIELD_NONE == layer->pix_fmt.field) &&
160 (event & VENC_END_OF_FRAME)) {
161 /* Progressive mode */
162
163 vpbe_isr_even_field(disp_dev, layer);
164 vpbe_isr_odd_field(disp_dev, layer);
165 } else {
166 /* Interlaced mode */
167
168 layer->field_id ^= 1;
169 if (event & VENC_FIRST_FIELD)
170 fid = 0;
171 else
172 fid = 1;
173
174 /*
175 * If field id does not match with store
176 * field id
177 */
178 if (fid != layer->field_id) {
179 /* Make them in sync */
180 layer->field_id = fid;
181 continue;
182 }
183 /*
184 * device field id and local field id are
185 * in sync. If this is even field
186 */
187 if (0 == fid)
188 vpbe_isr_even_field(disp_dev, layer);
189 else /* odd field */
190 vpbe_isr_odd_field(disp_dev, layer);
191 }
192 }
193
194 return IRQ_HANDLED;
195 }
196
197 /*
198 * vpbe_buffer_prepare()
199 * This is the callback function called from vb2_qbuf() function
200 * the buffer is prepared and user space virtual address is converted into
201 * physical address
202 */
203 static int vpbe_buffer_prepare(struct vb2_buffer *vb)
204 {
205 struct vb2_queue *q = vb->vb2_queue;
206 struct vpbe_layer *layer = vb2_get_drv_priv(q);
207 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
208 unsigned long addr;
209
210 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
211 "vpbe_buffer_prepare\n");
212
213 vb2_set_plane_payload(vb, 0, layer->pix_fmt.sizeimage);
214 if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
215 return -EINVAL;
216
217 addr = vb2_dma_contig_plane_dma_addr(vb, 0);
218 if (!IS_ALIGNED(addr, 8)) {
219 v4l2_err(&vpbe_dev->v4l2_dev,
220 "buffer_prepare:offset is not aligned to 32 bytes\n");
221 return -EINVAL;
222 }
223 return 0;
224 }
225
226 /*
227 * vpbe_buffer_setup()
228 * This function allocates memory for the buffers
229 */
230 static int
231 vpbe_buffer_queue_setup(struct vb2_queue *vq,
232 unsigned int *nbuffers, unsigned int *nplanes,
233 unsigned int sizes[], void *alloc_ctxs[])
234
235 {
236 /* Get the file handle object and layer object */
237 struct vpbe_layer *layer = vb2_get_drv_priv(vq);
238 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
239
240 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_buffer_setup\n");
241
242 /* Store number of buffers allocated in numbuffer member */
243 if (vq->num_buffers + *nbuffers < VPBE_DEFAULT_NUM_BUFS)
244 *nbuffers = VPBE_DEFAULT_NUM_BUFS - vq->num_buffers;
245 alloc_ctxs[0] = layer->alloc_ctx;
246
247 if (*nplanes)
248 return sizes[0] < layer->pix_fmt.sizeimage ? -EINVAL : 0;
249
250 *nplanes = 1;
251 sizes[0] = layer->pix_fmt.sizeimage;
252
253 return 0;
254 }
255
256 /*
257 * vpbe_buffer_queue()
258 * This function adds the buffer to DMA queue
259 */
260 static void vpbe_buffer_queue(struct vb2_buffer *vb)
261 {
262 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
263 /* Get the file handle object and layer object */
264 struct vpbe_disp_buffer *buf = container_of(vbuf,
265 struct vpbe_disp_buffer, vb);
266 struct vpbe_layer *layer = vb2_get_drv_priv(vb->vb2_queue);
267 struct vpbe_display *disp = layer->disp_dev;
268 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
269 unsigned long flags;
270
271 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
272 "vpbe_buffer_queue\n");
273
274 /* add the buffer to the DMA queue */
275 spin_lock_irqsave(&disp->dma_queue_lock, flags);
276 list_add_tail(&buf->list, &layer->dma_queue);
277 spin_unlock_irqrestore(&disp->dma_queue_lock, flags);
278 }
279
280 static int vpbe_start_streaming(struct vb2_queue *vq, unsigned int count)
281 {
282 struct vpbe_layer *layer = vb2_get_drv_priv(vq);
283 struct osd_state *osd_device = layer->disp_dev->osd_device;
284 int ret;
285
286 osd_device->ops.disable_layer(osd_device, layer->layer_info.id);
287
288 /* Get the next frame from the buffer queue */
289 layer->next_frm = layer->cur_frm = list_entry(layer->dma_queue.next,
290 struct vpbe_disp_buffer, list);
291 /* Remove buffer from the buffer queue */
292 list_del(&layer->cur_frm->list);
293 /* Mark state of the current frame to active */
294 layer->cur_frm->vb.vb2_buf.state = VB2_BUF_STATE_ACTIVE;
295 /* Initialize field_id and started member */
296 layer->field_id = 0;
297
298 /* Set parameters in OSD and VENC */
299 ret = vpbe_set_osd_display_params(layer->disp_dev, layer);
300 if (ret < 0) {
301 struct vpbe_disp_buffer *buf, *tmp;
302
303 vb2_buffer_done(&layer->cur_frm->vb.vb2_buf,
304 VB2_BUF_STATE_QUEUED);
305 list_for_each_entry_safe(buf, tmp, &layer->dma_queue, list) {
306 list_del(&buf->list);
307 vb2_buffer_done(&buf->vb.vb2_buf,
308 VB2_BUF_STATE_QUEUED);
309 }
310
311 return ret;
312 }
313
314 /*
315 * if request format is yuv420 semiplanar, need to
316 * enable both video windows
317 */
318 layer->layer_first_int = 1;
319
320 return ret;
321 }
322
323 static void vpbe_stop_streaming(struct vb2_queue *vq)
324 {
325 struct vpbe_layer *layer = vb2_get_drv_priv(vq);
326 struct osd_state *osd_device = layer->disp_dev->osd_device;
327 struct vpbe_display *disp = layer->disp_dev;
328 unsigned long flags;
329
330 if (!vb2_is_streaming(vq))
331 return;
332
333 osd_device->ops.disable_layer(osd_device, layer->layer_info.id);
334
335 /* release all active buffers */
336 spin_lock_irqsave(&disp->dma_queue_lock, flags);
337 if (layer->cur_frm == layer->next_frm) {
338 vb2_buffer_done(&layer->cur_frm->vb.vb2_buf,
339 VB2_BUF_STATE_ERROR);
340 } else {
341 if (layer->cur_frm != NULL)
342 vb2_buffer_done(&layer->cur_frm->vb.vb2_buf,
343 VB2_BUF_STATE_ERROR);
344 if (layer->next_frm != NULL)
345 vb2_buffer_done(&layer->next_frm->vb.vb2_buf,
346 VB2_BUF_STATE_ERROR);
347 }
348
349 while (!list_empty(&layer->dma_queue)) {
350 layer->next_frm = list_entry(layer->dma_queue.next,
351 struct vpbe_disp_buffer, list);
352 list_del(&layer->next_frm->list);
353 vb2_buffer_done(&layer->next_frm->vb.vb2_buf,
354 VB2_BUF_STATE_ERROR);
355 }
356 spin_unlock_irqrestore(&disp->dma_queue_lock, flags);
357 }
358
359 static struct vb2_ops video_qops = {
360 .queue_setup = vpbe_buffer_queue_setup,
361 .wait_prepare = vb2_ops_wait_prepare,
362 .wait_finish = vb2_ops_wait_finish,
363 .buf_prepare = vpbe_buffer_prepare,
364 .start_streaming = vpbe_start_streaming,
365 .stop_streaming = vpbe_stop_streaming,
366 .buf_queue = vpbe_buffer_queue,
367 };
368
369 static
370 struct vpbe_layer*
371 _vpbe_display_get_other_win_layer(struct vpbe_display *disp_dev,
372 struct vpbe_layer *layer)
373 {
374 enum vpbe_display_device_id thiswin, otherwin;
375 thiswin = layer->device_id;
376
377 otherwin = (thiswin == VPBE_DISPLAY_DEVICE_0) ?
378 VPBE_DISPLAY_DEVICE_1 : VPBE_DISPLAY_DEVICE_0;
379 return disp_dev->dev[otherwin];
380 }
381
382 static int vpbe_set_osd_display_params(struct vpbe_display *disp_dev,
383 struct vpbe_layer *layer)
384 {
385 struct osd_layer_config *cfg = &layer->layer_info.config;
386 struct osd_state *osd_device = disp_dev->osd_device;
387 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
388 unsigned long addr;
389 int ret;
390
391 addr = vb2_dma_contig_plane_dma_addr(&layer->cur_frm->vb.vb2_buf, 0);
392 /* Set address in the display registers */
393 osd_device->ops.start_layer(osd_device,
394 layer->layer_info.id,
395 addr,
396 disp_dev->cbcr_ofst);
397
398 ret = osd_device->ops.enable_layer(osd_device,
399 layer->layer_info.id, 0);
400 if (ret < 0) {
401 v4l2_err(&vpbe_dev->v4l2_dev,
402 "Error in enabling osd window layer 0\n");
403 return -1;
404 }
405
406 /* Enable the window */
407 layer->layer_info.enable = 1;
408 if (cfg->pixfmt == PIXFMT_NV12) {
409 struct vpbe_layer *otherlayer =
410 _vpbe_display_get_other_win_layer(disp_dev, layer);
411
412 ret = osd_device->ops.enable_layer(osd_device,
413 otherlayer->layer_info.id, 1);
414 if (ret < 0) {
415 v4l2_err(&vpbe_dev->v4l2_dev,
416 "Error in enabling osd window layer 1\n");
417 return -1;
418 }
419 otherlayer->layer_info.enable = 1;
420 }
421 return 0;
422 }
423
424 static void
425 vpbe_disp_calculate_scale_factor(struct vpbe_display *disp_dev,
426 struct vpbe_layer *layer,
427 int expected_xsize, int expected_ysize)
428 {
429 struct display_layer_info *layer_info = &layer->layer_info;
430 struct v4l2_pix_format *pixfmt = &layer->pix_fmt;
431 struct osd_layer_config *cfg = &layer->layer_info.config;
432 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
433 int calculated_xsize;
434 int h_exp = 0;
435 int v_exp = 0;
436 int h_scale;
437 int v_scale;
438
439 v4l2_std_id standard_id = vpbe_dev->current_timings.std_id;
440
441 /*
442 * Application initially set the image format. Current display
443 * size is obtained from the vpbe display controller. expected_xsize
444 * and expected_ysize are set through S_CROP ioctl. Based on this,
445 * driver will calculate the scale factors for vertical and
446 * horizontal direction so that the image is displayed scaled
447 * and expanded. Application uses expansion to display the image
448 * in a square pixel. Otherwise it is displayed using displays
449 * pixel aspect ratio.It is expected that application chooses
450 * the crop coordinates for cropped or scaled display. if crop
451 * size is less than the image size, it is displayed cropped or
452 * it is displayed scaled and/or expanded.
453 *
454 * to begin with, set the crop window same as expected. Later we
455 * will override with scaled window size
456 */
457
458 cfg->xsize = pixfmt->width;
459 cfg->ysize = pixfmt->height;
460 layer_info->h_zoom = ZOOM_X1; /* no horizontal zoom */
461 layer_info->v_zoom = ZOOM_X1; /* no horizontal zoom */
462 layer_info->h_exp = H_EXP_OFF; /* no horizontal zoom */
463 layer_info->v_exp = V_EXP_OFF; /* no horizontal zoom */
464
465 if (pixfmt->width < expected_xsize) {
466 h_scale = vpbe_dev->current_timings.xres / pixfmt->width;
467 if (h_scale < 2)
468 h_scale = 1;
469 else if (h_scale >= 4)
470 h_scale = 4;
471 else
472 h_scale = 2;
473 cfg->xsize *= h_scale;
474 if (cfg->xsize < expected_xsize) {
475 if ((standard_id & V4L2_STD_525_60) ||
476 (standard_id & V4L2_STD_625_50)) {
477 calculated_xsize = (cfg->xsize *
478 VPBE_DISPLAY_H_EXP_RATIO_N) /
479 VPBE_DISPLAY_H_EXP_RATIO_D;
480 if (calculated_xsize <= expected_xsize) {
481 h_exp = 1;
482 cfg->xsize = calculated_xsize;
483 }
484 }
485 }
486 if (h_scale == 2)
487 layer_info->h_zoom = ZOOM_X2;
488 else if (h_scale == 4)
489 layer_info->h_zoom = ZOOM_X4;
490 if (h_exp)
491 layer_info->h_exp = H_EXP_9_OVER_8;
492 } else {
493 /* no scaling, only cropping. Set display area to crop area */
494 cfg->xsize = expected_xsize;
495 }
496
497 if (pixfmt->height < expected_ysize) {
498 v_scale = expected_ysize / pixfmt->height;
499 if (v_scale < 2)
500 v_scale = 1;
501 else if (v_scale >= 4)
502 v_scale = 4;
503 else
504 v_scale = 2;
505 cfg->ysize *= v_scale;
506 if (cfg->ysize < expected_ysize) {
507 if ((standard_id & V4L2_STD_625_50)) {
508 calculated_xsize = (cfg->ysize *
509 VPBE_DISPLAY_V_EXP_RATIO_N) /
510 VPBE_DISPLAY_V_EXP_RATIO_D;
511 if (calculated_xsize <= expected_ysize) {
512 v_exp = 1;
513 cfg->ysize = calculated_xsize;
514 }
515 }
516 }
517 if (v_scale == 2)
518 layer_info->v_zoom = ZOOM_X2;
519 else if (v_scale == 4)
520 layer_info->v_zoom = ZOOM_X4;
521 if (v_exp)
522 layer_info->h_exp = V_EXP_6_OVER_5;
523 } else {
524 /* no scaling, only cropping. Set display area to crop area */
525 cfg->ysize = expected_ysize;
526 }
527 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
528 "crop display xsize = %d, ysize = %d\n",
529 cfg->xsize, cfg->ysize);
530 }
531
532 static void vpbe_disp_adj_position(struct vpbe_display *disp_dev,
533 struct vpbe_layer *layer,
534 int top, int left)
535 {
536 struct osd_layer_config *cfg = &layer->layer_info.config;
537 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
538
539 cfg->xpos = min((unsigned int)left,
540 vpbe_dev->current_timings.xres - cfg->xsize);
541 cfg->ypos = min((unsigned int)top,
542 vpbe_dev->current_timings.yres - cfg->ysize);
543
544 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
545 "new xpos = %d, ypos = %d\n",
546 cfg->xpos, cfg->ypos);
547 }
548
549 static void vpbe_disp_check_window_params(struct vpbe_display *disp_dev,
550 struct v4l2_rect *c)
551 {
552 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
553
554 if ((c->width == 0) ||
555 ((c->width + c->left) > vpbe_dev->current_timings.xres))
556 c->width = vpbe_dev->current_timings.xres - c->left;
557
558 if ((c->height == 0) || ((c->height + c->top) >
559 vpbe_dev->current_timings.yres))
560 c->height = vpbe_dev->current_timings.yres - c->top;
561
562 /* window height must be even for interlaced display */
563 if (vpbe_dev->current_timings.interlaced)
564 c->height &= (~0x01);
565
566 }
567
568 /**
569 * vpbe_try_format()
570 * If user application provides width and height, and have bytesperline set
571 * to zero, driver calculates bytesperline and sizeimage based on hardware
572 * limits.
573 */
574 static int vpbe_try_format(struct vpbe_display *disp_dev,
575 struct v4l2_pix_format *pixfmt, int check)
576 {
577 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
578 int min_height = 1;
579 int min_width = 32;
580 int max_height;
581 int max_width;
582 int bpp;
583
584 if ((pixfmt->pixelformat != V4L2_PIX_FMT_UYVY) &&
585 (pixfmt->pixelformat != V4L2_PIX_FMT_NV12))
586 /* choose default as V4L2_PIX_FMT_UYVY */
587 pixfmt->pixelformat = V4L2_PIX_FMT_UYVY;
588
589 /* Check the field format */
590 if ((pixfmt->field != V4L2_FIELD_INTERLACED) &&
591 (pixfmt->field != V4L2_FIELD_NONE)) {
592 if (vpbe_dev->current_timings.interlaced)
593 pixfmt->field = V4L2_FIELD_INTERLACED;
594 else
595 pixfmt->field = V4L2_FIELD_NONE;
596 }
597
598 if (pixfmt->field == V4L2_FIELD_INTERLACED)
599 min_height = 2;
600
601 if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
602 bpp = 1;
603 else
604 bpp = 2;
605
606 max_width = vpbe_dev->current_timings.xres;
607 max_height = vpbe_dev->current_timings.yres;
608
609 min_width /= bpp;
610
611 if (!pixfmt->width || (pixfmt->width < min_width) ||
612 (pixfmt->width > max_width)) {
613 pixfmt->width = vpbe_dev->current_timings.xres;
614 }
615
616 if (!pixfmt->height || (pixfmt->height < min_height) ||
617 (pixfmt->height > max_height)) {
618 pixfmt->height = vpbe_dev->current_timings.yres;
619 }
620
621 if (pixfmt->bytesperline < (pixfmt->width * bpp))
622 pixfmt->bytesperline = pixfmt->width * bpp;
623
624 /* Make the bytesperline 32 byte aligned */
625 pixfmt->bytesperline = ((pixfmt->width * bpp + 31) & ~31);
626
627 if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
628 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height +
629 (pixfmt->bytesperline * pixfmt->height >> 1);
630 else
631 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
632
633 return 0;
634 }
635
636 static int vpbe_display_querycap(struct file *file, void *priv,
637 struct v4l2_capability *cap)
638 {
639 struct vpbe_layer *layer = video_drvdata(file);
640 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
641
642 cap->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
643 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
644 snprintf(cap->driver, sizeof(cap->driver), "%s",
645 dev_name(vpbe_dev->pdev));
646 snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
647 dev_name(vpbe_dev->pdev));
648 strlcpy(cap->card, vpbe_dev->cfg->module_name, sizeof(cap->card));
649
650 return 0;
651 }
652
653 static int vpbe_display_s_crop(struct file *file, void *priv,
654 const struct v4l2_crop *crop)
655 {
656 struct vpbe_layer *layer = video_drvdata(file);
657 struct vpbe_display *disp_dev = layer->disp_dev;
658 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
659 struct osd_layer_config *cfg = &layer->layer_info.config;
660 struct osd_state *osd_device = disp_dev->osd_device;
661 struct v4l2_rect rect = crop->c;
662 int ret;
663
664 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
665 "VIDIOC_S_CROP, layer id = %d\n", layer->device_id);
666
667 if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
668 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buf type\n");
669 return -EINVAL;
670 }
671
672 if (rect.top < 0)
673 rect.top = 0;
674 if (rect.left < 0)
675 rect.left = 0;
676
677 vpbe_disp_check_window_params(disp_dev, &rect);
678
679 osd_device->ops.get_layer_config(osd_device,
680 layer->layer_info.id, cfg);
681
682 vpbe_disp_calculate_scale_factor(disp_dev, layer,
683 rect.width,
684 rect.height);
685 vpbe_disp_adj_position(disp_dev, layer, rect.top,
686 rect.left);
687 ret = osd_device->ops.set_layer_config(osd_device,
688 layer->layer_info.id, cfg);
689 if (ret < 0) {
690 v4l2_err(&vpbe_dev->v4l2_dev,
691 "Error in set layer config:\n");
692 return -EINVAL;
693 }
694
695 /* apply zooming and h or v expansion */
696 osd_device->ops.set_zoom(osd_device,
697 layer->layer_info.id,
698 layer->layer_info.h_zoom,
699 layer->layer_info.v_zoom);
700 ret = osd_device->ops.set_vid_expansion(osd_device,
701 layer->layer_info.h_exp,
702 layer->layer_info.v_exp);
703 if (ret < 0) {
704 v4l2_err(&vpbe_dev->v4l2_dev,
705 "Error in set vid expansion:\n");
706 return -EINVAL;
707 }
708
709 if ((layer->layer_info.h_zoom != ZOOM_X1) ||
710 (layer->layer_info.v_zoom != ZOOM_X1) ||
711 (layer->layer_info.h_exp != H_EXP_OFF) ||
712 (layer->layer_info.v_exp != V_EXP_OFF))
713 /* Enable expansion filter */
714 osd_device->ops.set_interpolation_filter(osd_device, 1);
715 else
716 osd_device->ops.set_interpolation_filter(osd_device, 0);
717
718 return 0;
719 }
720
721 static int vpbe_display_g_crop(struct file *file, void *priv,
722 struct v4l2_crop *crop)
723 {
724 struct vpbe_layer *layer = video_drvdata(file);
725 struct osd_layer_config *cfg = &layer->layer_info.config;
726 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
727 struct osd_state *osd_device = layer->disp_dev->osd_device;
728 struct v4l2_rect *rect = &crop->c;
729
730 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
731 "VIDIOC_G_CROP, layer id = %d\n",
732 layer->device_id);
733
734 if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
735 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buf type\n");
736 return -EINVAL;
737 }
738 osd_device->ops.get_layer_config(osd_device,
739 layer->layer_info.id, cfg);
740 rect->top = cfg->ypos;
741 rect->left = cfg->xpos;
742 rect->width = cfg->xsize;
743 rect->height = cfg->ysize;
744
745 return 0;
746 }
747
748 static int vpbe_display_cropcap(struct file *file, void *priv,
749 struct v4l2_cropcap *cropcap)
750 {
751 struct vpbe_layer *layer = video_drvdata(file);
752 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
753
754 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_CROPCAP ioctl\n");
755
756 cropcap->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
757 cropcap->bounds.left = 0;
758 cropcap->bounds.top = 0;
759 cropcap->bounds.width = vpbe_dev->current_timings.xres;
760 cropcap->bounds.height = vpbe_dev->current_timings.yres;
761 cropcap->pixelaspect = vpbe_dev->current_timings.aspect;
762 cropcap->defrect = cropcap->bounds;
763 return 0;
764 }
765
766 static int vpbe_display_g_fmt(struct file *file, void *priv,
767 struct v4l2_format *fmt)
768 {
769 struct vpbe_layer *layer = video_drvdata(file);
770 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
771
772 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
773 "VIDIOC_G_FMT, layer id = %d\n",
774 layer->device_id);
775
776 /* If buffer type is video output */
777 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
778 v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
779 return -EINVAL;
780 }
781 /* Fill in the information about format */
782 fmt->fmt.pix = layer->pix_fmt;
783
784 return 0;
785 }
786
787 static int vpbe_display_enum_fmt(struct file *file, void *priv,
788 struct v4l2_fmtdesc *fmt)
789 {
790 struct vpbe_layer *layer = video_drvdata(file);
791 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
792 unsigned int index = 0;
793
794 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
795 "VIDIOC_ENUM_FMT, layer id = %d\n",
796 layer->device_id);
797 if (fmt->index > 1) {
798 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid format index\n");
799 return -EINVAL;
800 }
801
802 /* Fill in the information about format */
803 index = fmt->index;
804 memset(fmt, 0, sizeof(*fmt));
805 fmt->index = index;
806 fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
807 if (index == 0) {
808 strcpy(fmt->description, "YUV 4:2:2 - UYVY");
809 fmt->pixelformat = V4L2_PIX_FMT_UYVY;
810 } else {
811 strcpy(fmt->description, "Y/CbCr 4:2:0");
812 fmt->pixelformat = V4L2_PIX_FMT_NV12;
813 }
814
815 return 0;
816 }
817
818 static int vpbe_display_s_fmt(struct file *file, void *priv,
819 struct v4l2_format *fmt)
820 {
821 struct vpbe_layer *layer = video_drvdata(file);
822 struct vpbe_display *disp_dev = layer->disp_dev;
823 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
824 struct osd_layer_config *cfg = &layer->layer_info.config;
825 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
826 struct osd_state *osd_device = disp_dev->osd_device;
827 int ret;
828
829 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
830 "VIDIOC_S_FMT, layer id = %d\n",
831 layer->device_id);
832
833 if (vb2_is_busy(&layer->buffer_queue))
834 return -EBUSY;
835
836 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
837 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "invalid type\n");
838 return -EINVAL;
839 }
840 /* Check for valid pixel format */
841 ret = vpbe_try_format(disp_dev, pixfmt, 1);
842 if (ret)
843 return ret;
844
845 /* YUV420 is requested, check availability of the
846 other video window */
847
848 layer->pix_fmt = *pixfmt;
849 if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12) {
850 struct vpbe_layer *otherlayer;
851
852 otherlayer = _vpbe_display_get_other_win_layer(disp_dev, layer);
853 /* if other layer is available, only
854 * claim it, do not configure it
855 */
856 ret = osd_device->ops.request_layer(osd_device,
857 otherlayer->layer_info.id);
858 if (ret < 0) {
859 v4l2_err(&vpbe_dev->v4l2_dev,
860 "Display Manager failed to allocate layer\n");
861 return -EBUSY;
862 }
863 }
864
865 /* Get osd layer config */
866 osd_device->ops.get_layer_config(osd_device,
867 layer->layer_info.id, cfg);
868 /* Store the pixel format in the layer object */
869 cfg->xsize = pixfmt->width;
870 cfg->ysize = pixfmt->height;
871 cfg->line_length = pixfmt->bytesperline;
872 cfg->ypos = 0;
873 cfg->xpos = 0;
874 cfg->interlaced = vpbe_dev->current_timings.interlaced;
875
876 if (V4L2_PIX_FMT_UYVY == pixfmt->pixelformat)
877 cfg->pixfmt = PIXFMT_YCBCRI;
878
879 /* Change of the default pixel format for both video windows */
880 if (V4L2_PIX_FMT_NV12 == pixfmt->pixelformat) {
881 struct vpbe_layer *otherlayer;
882 cfg->pixfmt = PIXFMT_NV12;
883 otherlayer = _vpbe_display_get_other_win_layer(disp_dev,
884 layer);
885 otherlayer->layer_info.config.pixfmt = PIXFMT_NV12;
886 }
887
888 /* Set the layer config in the osd window */
889 ret = osd_device->ops.set_layer_config(osd_device,
890 layer->layer_info.id, cfg);
891 if (ret < 0) {
892 v4l2_err(&vpbe_dev->v4l2_dev,
893 "Error in S_FMT params:\n");
894 return -EINVAL;
895 }
896
897 /* Readback and fill the local copy of current pix format */
898 osd_device->ops.get_layer_config(osd_device,
899 layer->layer_info.id, cfg);
900
901 return 0;
902 }
903
904 static int vpbe_display_try_fmt(struct file *file, void *priv,
905 struct v4l2_format *fmt)
906 {
907 struct vpbe_layer *layer = video_drvdata(file);
908 struct vpbe_display *disp_dev = layer->disp_dev;
909 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
910 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
911
912 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_TRY_FMT\n");
913
914 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
915 v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
916 return -EINVAL;
917 }
918
919 /* Check for valid field format */
920 return vpbe_try_format(disp_dev, pixfmt, 0);
921
922 }
923
924 /**
925 * vpbe_display_s_std - Set the given standard in the encoder
926 *
927 * Sets the standard if supported by the current encoder. Return the status.
928 * 0 - success & -EINVAL on error
929 */
930 static int vpbe_display_s_std(struct file *file, void *priv,
931 v4l2_std_id std_id)
932 {
933 struct vpbe_layer *layer = video_drvdata(file);
934 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
935 int ret;
936
937 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_STD\n");
938
939 if (vb2_is_busy(&layer->buffer_queue))
940 return -EBUSY;
941
942 if (NULL != vpbe_dev->ops.s_std) {
943 ret = vpbe_dev->ops.s_std(vpbe_dev, std_id);
944 if (ret) {
945 v4l2_err(&vpbe_dev->v4l2_dev,
946 "Failed to set standard for sub devices\n");
947 return -EINVAL;
948 }
949 } else {
950 return -EINVAL;
951 }
952
953 return 0;
954 }
955
956 /**
957 * vpbe_display_g_std - Get the standard in the current encoder
958 *
959 * Get the standard in the current encoder. Return the status. 0 - success
960 * -EINVAL on error
961 */
962 static int vpbe_display_g_std(struct file *file, void *priv,
963 v4l2_std_id *std_id)
964 {
965 struct vpbe_layer *layer = video_drvdata(file);
966 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
967
968 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_STD\n");
969
970 /* Get the standard from the current encoder */
971 if (vpbe_dev->current_timings.timings_type & VPBE_ENC_STD) {
972 *std_id = vpbe_dev->current_timings.std_id;
973 return 0;
974 }
975
976 return -EINVAL;
977 }
978
979 /**
980 * vpbe_display_enum_output - enumerate outputs
981 *
982 * Enumerates the outputs available at the vpbe display
983 * returns the status, -EINVAL if end of output list
984 */
985 static int vpbe_display_enum_output(struct file *file, void *priv,
986 struct v4l2_output *output)
987 {
988 struct vpbe_layer *layer = video_drvdata(file);
989 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
990 int ret;
991
992 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_OUTPUT\n");
993
994 /* Enumerate outputs */
995
996 if (NULL == vpbe_dev->ops.enum_outputs)
997 return -EINVAL;
998
999 ret = vpbe_dev->ops.enum_outputs(vpbe_dev, output);
1000 if (ret) {
1001 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1002 "Failed to enumerate outputs\n");
1003 return -EINVAL;
1004 }
1005
1006 return 0;
1007 }
1008
1009 /**
1010 * vpbe_display_s_output - Set output to
1011 * the output specified by the index
1012 */
1013 static int vpbe_display_s_output(struct file *file, void *priv,
1014 unsigned int i)
1015 {
1016 struct vpbe_layer *layer = video_drvdata(file);
1017 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1018 int ret;
1019
1020 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_OUTPUT\n");
1021
1022 if (vb2_is_busy(&layer->buffer_queue))
1023 return -EBUSY;
1024
1025 if (NULL == vpbe_dev->ops.set_output)
1026 return -EINVAL;
1027
1028 ret = vpbe_dev->ops.set_output(vpbe_dev, i);
1029 if (ret) {
1030 v4l2_err(&vpbe_dev->v4l2_dev,
1031 "Failed to set output for sub devices\n");
1032 return -EINVAL;
1033 }
1034
1035 return 0;
1036 }
1037
1038 /**
1039 * vpbe_display_g_output - Get output from subdevice
1040 * for a given by the index
1041 */
1042 static int vpbe_display_g_output(struct file *file, void *priv,
1043 unsigned int *i)
1044 {
1045 struct vpbe_layer *layer = video_drvdata(file);
1046 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1047
1048 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_OUTPUT\n");
1049 /* Get the standard from the current encoder */
1050 *i = vpbe_dev->current_out_index;
1051
1052 return 0;
1053 }
1054
1055 /**
1056 * vpbe_display_enum_dv_timings - Enumerate the dv timings
1057 *
1058 * enum the timings in the current encoder. Return the status. 0 - success
1059 * -EINVAL on error
1060 */
1061 static int
1062 vpbe_display_enum_dv_timings(struct file *file, void *priv,
1063 struct v4l2_enum_dv_timings *timings)
1064 {
1065 struct vpbe_layer *layer = video_drvdata(file);
1066 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1067 int ret;
1068
1069 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_DV_TIMINGS\n");
1070
1071 /* Enumerate outputs */
1072 if (NULL == vpbe_dev->ops.enum_dv_timings)
1073 return -EINVAL;
1074
1075 ret = vpbe_dev->ops.enum_dv_timings(vpbe_dev, timings);
1076 if (ret) {
1077 v4l2_err(&vpbe_dev->v4l2_dev,
1078 "Failed to enumerate dv timings info\n");
1079 return -EINVAL;
1080 }
1081
1082 return 0;
1083 }
1084
1085 /**
1086 * vpbe_display_s_dv_timings - Set the dv timings
1087 *
1088 * Set the timings in the current encoder. Return the status. 0 - success
1089 * -EINVAL on error
1090 */
1091 static int
1092 vpbe_display_s_dv_timings(struct file *file, void *priv,
1093 struct v4l2_dv_timings *timings)
1094 {
1095 struct vpbe_layer *layer = video_drvdata(file);
1096 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1097 int ret;
1098
1099 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_DV_TIMINGS\n");
1100
1101 if (vb2_is_busy(&layer->buffer_queue))
1102 return -EBUSY;
1103
1104 /* Set the given standard in the encoder */
1105 if (!vpbe_dev->ops.s_dv_timings)
1106 return -EINVAL;
1107
1108 ret = vpbe_dev->ops.s_dv_timings(vpbe_dev, timings);
1109 if (ret) {
1110 v4l2_err(&vpbe_dev->v4l2_dev,
1111 "Failed to set the dv timings info\n");
1112 return -EINVAL;
1113 }
1114
1115 return 0;
1116 }
1117
1118 /**
1119 * vpbe_display_g_dv_timings - Set the dv timings
1120 *
1121 * Get the timings in the current encoder. Return the status. 0 - success
1122 * -EINVAL on error
1123 */
1124 static int
1125 vpbe_display_g_dv_timings(struct file *file, void *priv,
1126 struct v4l2_dv_timings *dv_timings)
1127 {
1128 struct vpbe_layer *layer = video_drvdata(file);
1129 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1130
1131 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_DV_TIMINGS\n");
1132
1133 /* Get the given standard in the encoder */
1134
1135 if (vpbe_dev->current_timings.timings_type &
1136 VPBE_ENC_DV_TIMINGS) {
1137 *dv_timings = vpbe_dev->current_timings.dv_timings;
1138 } else {
1139 return -EINVAL;
1140 }
1141
1142 return 0;
1143 }
1144
1145 /*
1146 * vpbe_display_open()
1147 * It creates object of file handle structure and stores it in private_data
1148 * member of filepointer
1149 */
1150 static int vpbe_display_open(struct file *file)
1151 {
1152 struct vpbe_layer *layer = video_drvdata(file);
1153 struct vpbe_display *disp_dev = layer->disp_dev;
1154 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1155 struct osd_state *osd_device = disp_dev->osd_device;
1156 int err;
1157
1158 /* creating context for file descriptor */
1159 err = v4l2_fh_open(file);
1160 if (err) {
1161 v4l2_err(&vpbe_dev->v4l2_dev, "v4l2_fh_open failed\n");
1162 return err;
1163 }
1164
1165 /* leaving if layer is already initialized */
1166 if (!v4l2_fh_is_singular_file(file))
1167 return err;
1168
1169 if (!layer->usrs) {
1170 if (mutex_lock_interruptible(&layer->opslock))
1171 return -ERESTARTSYS;
1172 /* First claim the layer for this device */
1173 err = osd_device->ops.request_layer(osd_device,
1174 layer->layer_info.id);
1175 mutex_unlock(&layer->opslock);
1176 if (err < 0) {
1177 /* Couldn't get layer */
1178 v4l2_err(&vpbe_dev->v4l2_dev,
1179 "Display Manager failed to allocate layer\n");
1180 v4l2_fh_release(file);
1181 return -EINVAL;
1182 }
1183 }
1184 /* Increment layer usrs counter */
1185 layer->usrs++;
1186 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1187 "vpbe display device opened successfully\n");
1188 return 0;
1189 }
1190
1191 /*
1192 * vpbe_display_release()
1193 * This function deletes buffer queue, frees the buffers and the davinci
1194 * display file * handle
1195 */
1196 static int vpbe_display_release(struct file *file)
1197 {
1198 struct vpbe_layer *layer = video_drvdata(file);
1199 struct osd_layer_config *cfg = &layer->layer_info.config;
1200 struct vpbe_display *disp_dev = layer->disp_dev;
1201 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1202 struct osd_state *osd_device = disp_dev->osd_device;
1203
1204 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_release\n");
1205
1206 mutex_lock(&layer->opslock);
1207
1208 osd_device->ops.disable_layer(osd_device,
1209 layer->layer_info.id);
1210 /* Decrement layer usrs counter */
1211 layer->usrs--;
1212 /* If this file handle has initialize encoder device, reset it */
1213 if (!layer->usrs) {
1214 if (cfg->pixfmt == PIXFMT_NV12) {
1215 struct vpbe_layer *otherlayer;
1216 otherlayer =
1217 _vpbe_display_get_other_win_layer(disp_dev, layer);
1218 osd_device->ops.disable_layer(osd_device,
1219 otherlayer->layer_info.id);
1220 osd_device->ops.release_layer(osd_device,
1221 otherlayer->layer_info.id);
1222 }
1223 osd_device->ops.disable_layer(osd_device,
1224 layer->layer_info.id);
1225 osd_device->ops.release_layer(osd_device,
1226 layer->layer_info.id);
1227 }
1228
1229 _vb2_fop_release(file, NULL);
1230 mutex_unlock(&layer->opslock);
1231
1232 disp_dev->cbcr_ofst = 0;
1233
1234 return 0;
1235 }
1236
1237 /* vpbe capture ioctl operations */
1238 static const struct v4l2_ioctl_ops vpbe_ioctl_ops = {
1239 .vidioc_querycap = vpbe_display_querycap,
1240 .vidioc_g_fmt_vid_out = vpbe_display_g_fmt,
1241 .vidioc_enum_fmt_vid_out = vpbe_display_enum_fmt,
1242 .vidioc_s_fmt_vid_out = vpbe_display_s_fmt,
1243 .vidioc_try_fmt_vid_out = vpbe_display_try_fmt,
1244
1245 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1246 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1247 .vidioc_querybuf = vb2_ioctl_querybuf,
1248 .vidioc_qbuf = vb2_ioctl_qbuf,
1249 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1250 .vidioc_streamon = vb2_ioctl_streamon,
1251 .vidioc_streamoff = vb2_ioctl_streamoff,
1252 .vidioc_expbuf = vb2_ioctl_expbuf,
1253
1254 .vidioc_cropcap = vpbe_display_cropcap,
1255 .vidioc_g_crop = vpbe_display_g_crop,
1256 .vidioc_s_crop = vpbe_display_s_crop,
1257
1258 .vidioc_s_std = vpbe_display_s_std,
1259 .vidioc_g_std = vpbe_display_g_std,
1260
1261 .vidioc_enum_output = vpbe_display_enum_output,
1262 .vidioc_s_output = vpbe_display_s_output,
1263 .vidioc_g_output = vpbe_display_g_output,
1264
1265 .vidioc_s_dv_timings = vpbe_display_s_dv_timings,
1266 .vidioc_g_dv_timings = vpbe_display_g_dv_timings,
1267 .vidioc_enum_dv_timings = vpbe_display_enum_dv_timings,
1268 };
1269
1270 static struct v4l2_file_operations vpbe_fops = {
1271 .owner = THIS_MODULE,
1272 .open = vpbe_display_open,
1273 .release = vpbe_display_release,
1274 .unlocked_ioctl = video_ioctl2,
1275 .mmap = vb2_fop_mmap,
1276 .poll = vb2_fop_poll,
1277 };
1278
1279 static int vpbe_device_get(struct device *dev, void *data)
1280 {
1281 struct platform_device *pdev = to_platform_device(dev);
1282 struct vpbe_display *vpbe_disp = data;
1283
1284 if (strcmp("vpbe_controller", pdev->name) == 0)
1285 vpbe_disp->vpbe_dev = platform_get_drvdata(pdev);
1286
1287 if (strstr(pdev->name, "vpbe-osd") != NULL)
1288 vpbe_disp->osd_device = platform_get_drvdata(pdev);
1289
1290 return 0;
1291 }
1292
1293 static int init_vpbe_layer(int i, struct vpbe_display *disp_dev,
1294 struct platform_device *pdev)
1295 {
1296 struct vpbe_layer *vpbe_display_layer = NULL;
1297 struct video_device *vbd = NULL;
1298
1299 /* Allocate memory for four plane display objects */
1300
1301 disp_dev->dev[i] =
1302 kzalloc(sizeof(struct vpbe_layer), GFP_KERNEL);
1303
1304 /* If memory allocation fails, return error */
1305 if (!disp_dev->dev[i]) {
1306 printk(KERN_ERR "ran out of memory\n");
1307 return -ENOMEM;
1308 }
1309 spin_lock_init(&disp_dev->dev[i]->irqlock);
1310 mutex_init(&disp_dev->dev[i]->opslock);
1311
1312 /* Get the pointer to the layer object */
1313 vpbe_display_layer = disp_dev->dev[i];
1314 vbd = &vpbe_display_layer->video_dev;
1315 /* Initialize field of video device */
1316 vbd->release = video_device_release_empty;
1317 vbd->fops = &vpbe_fops;
1318 vbd->ioctl_ops = &vpbe_ioctl_ops;
1319 vbd->minor = -1;
1320 vbd->v4l2_dev = &disp_dev->vpbe_dev->v4l2_dev;
1321 vbd->lock = &vpbe_display_layer->opslock;
1322 vbd->vfl_dir = VFL_DIR_TX;
1323
1324 if (disp_dev->vpbe_dev->current_timings.timings_type &
1325 VPBE_ENC_STD)
1326 vbd->tvnorms = (V4L2_STD_525_60 | V4L2_STD_625_50);
1327
1328 snprintf(vbd->name, sizeof(vbd->name),
1329 "DaVinci_VPBE Display_DRIVER_V%d.%d.%d",
1330 (VPBE_DISPLAY_VERSION_CODE >> 16) & 0xff,
1331 (VPBE_DISPLAY_VERSION_CODE >> 8) & 0xff,
1332 (VPBE_DISPLAY_VERSION_CODE) & 0xff);
1333
1334 vpbe_display_layer->device_id = i;
1335
1336 vpbe_display_layer->layer_info.id =
1337 ((i == VPBE_DISPLAY_DEVICE_0) ? WIN_VID0 : WIN_VID1);
1338
1339
1340 return 0;
1341 }
1342
1343 static int register_device(struct vpbe_layer *vpbe_display_layer,
1344 struct vpbe_display *disp_dev,
1345 struct platform_device *pdev)
1346 {
1347 int err;
1348
1349 v4l2_info(&disp_dev->vpbe_dev->v4l2_dev,
1350 "Trying to register VPBE display device.\n");
1351 v4l2_info(&disp_dev->vpbe_dev->v4l2_dev,
1352 "layer=%x,layer->video_dev=%x\n",
1353 (int)vpbe_display_layer,
1354 (int)&vpbe_display_layer->video_dev);
1355
1356 vpbe_display_layer->video_dev.queue = &vpbe_display_layer->buffer_queue;
1357 err = video_register_device(&vpbe_display_layer->video_dev,
1358 VFL_TYPE_GRABBER,
1359 -1);
1360 if (err)
1361 return -ENODEV;
1362
1363 vpbe_display_layer->disp_dev = disp_dev;
1364 /* set the driver data in platform device */
1365 platform_set_drvdata(pdev, disp_dev);
1366 video_set_drvdata(&vpbe_display_layer->video_dev,
1367 vpbe_display_layer);
1368
1369 return 0;
1370 }
1371
1372
1373
1374 /*
1375 * vpbe_display_probe()
1376 * This function creates device entries by register itself to the V4L2 driver
1377 * and initializes fields of each layer objects
1378 */
1379 static int vpbe_display_probe(struct platform_device *pdev)
1380 {
1381 struct vpbe_display *disp_dev;
1382 struct v4l2_device *v4l2_dev;
1383 struct resource *res = NULL;
1384 struct vb2_queue *q;
1385 int k;
1386 int i;
1387 int err;
1388 int irq;
1389
1390 printk(KERN_DEBUG "vpbe_display_probe\n");
1391 /* Allocate memory for vpbe_display */
1392 disp_dev = devm_kzalloc(&pdev->dev, sizeof(struct vpbe_display),
1393 GFP_KERNEL);
1394 if (!disp_dev)
1395 return -ENOMEM;
1396
1397 spin_lock_init(&disp_dev->dma_queue_lock);
1398 /*
1399 * Scan all the platform devices to find the vpbe
1400 * controller device and get the vpbe_dev object
1401 */
1402 err = bus_for_each_dev(&platform_bus_type, NULL, disp_dev,
1403 vpbe_device_get);
1404 if (err < 0)
1405 return err;
1406
1407 v4l2_dev = &disp_dev->vpbe_dev->v4l2_dev;
1408 /* Initialize the vpbe display controller */
1409 if (NULL != disp_dev->vpbe_dev->ops.initialize) {
1410 err = disp_dev->vpbe_dev->ops.initialize(&pdev->dev,
1411 disp_dev->vpbe_dev);
1412 if (err) {
1413 v4l2_err(v4l2_dev, "Error initing vpbe\n");
1414 err = -ENOMEM;
1415 goto probe_out;
1416 }
1417 }
1418
1419 for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1420 if (init_vpbe_layer(i, disp_dev, pdev)) {
1421 err = -ENODEV;
1422 goto probe_out;
1423 }
1424 }
1425
1426 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1427 if (!res) {
1428 v4l2_err(v4l2_dev, "Unable to get VENC interrupt resource\n");
1429 err = -ENODEV;
1430 goto probe_out;
1431 }
1432
1433 irq = res->start;
1434 err = devm_request_irq(&pdev->dev, irq, venc_isr, 0,
1435 VPBE_DISPLAY_DRIVER, disp_dev);
1436 if (err) {
1437 v4l2_err(v4l2_dev, "VPBE IRQ request failed\n");
1438 goto probe_out;
1439 }
1440
1441 for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1442 /* initialize vb2 queue */
1443 q = &disp_dev->dev[i]->buffer_queue;
1444 memset(q, 0, sizeof(*q));
1445 q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1446 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1447 q->drv_priv = disp_dev->dev[i];
1448 q->ops = &video_qops;
1449 q->mem_ops = &vb2_dma_contig_memops;
1450 q->buf_struct_size = sizeof(struct vpbe_disp_buffer);
1451 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1452 q->min_buffers_needed = 1;
1453 q->lock = &disp_dev->dev[i]->opslock;
1454 err = vb2_queue_init(q);
1455 if (err) {
1456 v4l2_err(v4l2_dev, "vb2_queue_init() failed\n");
1457 goto probe_out;
1458 }
1459
1460 disp_dev->dev[i]->alloc_ctx =
1461 vb2_dma_contig_init_ctx(disp_dev->vpbe_dev->pdev);
1462 if (IS_ERR(disp_dev->dev[i]->alloc_ctx)) {
1463 v4l2_err(v4l2_dev, "Failed to get the context\n");
1464 err = PTR_ERR(disp_dev->dev[i]->alloc_ctx);
1465 goto probe_out;
1466 }
1467
1468 INIT_LIST_HEAD(&disp_dev->dev[i]->dma_queue);
1469
1470 if (register_device(disp_dev->dev[i], disp_dev, pdev)) {
1471 err = -ENODEV;
1472 goto probe_out;
1473 }
1474 }
1475
1476 v4l2_dbg(1, debug, v4l2_dev,
1477 "Successfully completed the probing of vpbe v4l2 device\n");
1478
1479 return 0;
1480
1481 probe_out:
1482 for (k = 0; k < VPBE_DISPLAY_MAX_DEVICES; k++) {
1483 /* Unregister video device */
1484 if (disp_dev->dev[k] != NULL) {
1485 vb2_dma_contig_cleanup_ctx(disp_dev->dev[k]->alloc_ctx);
1486 video_unregister_device(&disp_dev->dev[k]->video_dev);
1487 kfree(disp_dev->dev[k]);
1488 }
1489 }
1490 return err;
1491 }
1492
1493 /*
1494 * vpbe_display_remove()
1495 * It un-register hardware layer from V4L2 driver
1496 */
1497 static int vpbe_display_remove(struct platform_device *pdev)
1498 {
1499 struct vpbe_layer *vpbe_display_layer;
1500 struct vpbe_display *disp_dev = platform_get_drvdata(pdev);
1501 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1502 int i;
1503
1504 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_remove\n");
1505
1506 /* deinitialize the vpbe display controller */
1507 if (NULL != vpbe_dev->ops.deinitialize)
1508 vpbe_dev->ops.deinitialize(&pdev->dev, vpbe_dev);
1509 /* un-register device */
1510 for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1511 /* Get the pointer to the layer object */
1512 vpbe_display_layer = disp_dev->dev[i];
1513 vb2_dma_contig_cleanup_ctx(vpbe_display_layer->alloc_ctx);
1514 /* Unregister video device */
1515 video_unregister_device(&vpbe_display_layer->video_dev);
1516
1517 }
1518 for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1519 kfree(disp_dev->dev[i]);
1520 disp_dev->dev[i] = NULL;
1521 }
1522
1523 return 0;
1524 }
1525
1526 static struct platform_driver vpbe_display_driver = {
1527 .driver = {
1528 .name = VPBE_DISPLAY_DRIVER,
1529 .bus = &platform_bus_type,
1530 },
1531 .probe = vpbe_display_probe,
1532 .remove = vpbe_display_remove,
1533 };
1534
1535 module_platform_driver(vpbe_display_driver);
1536
1537 MODULE_DESCRIPTION("TI DM644x/DM355/DM365 VPBE Display controller");
1538 MODULE_LICENSE("GPL");
1539 MODULE_AUTHOR("Texas Instruments");
Linux kernel - Deliverables
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