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ARM: at91: fix board-rm9200-dt after sys_timer conversion
[GitHub/mt8127/android_kernel_alcatel_ttab.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 struct timespec timevalue;
75
76 if (layer->cur_frm == layer->next_frm)
77 return;
78 ktime_get_ts(&timevalue);
79 layer->cur_frm->vb.v4l2_buf.timestamp.tv_sec =
80 timevalue.tv_sec;
81 layer->cur_frm->vb.v4l2_buf.timestamp.tv_usec =
82 timevalue.tv_nsec / NSEC_PER_USEC;
83 vb2_buffer_done(&layer->cur_frm->vb, VB2_BUF_STATE_DONE);
84 /* Make cur_frm pointing to next_frm */
85 layer->cur_frm = layer->next_frm;
86 }
87
88 static void vpbe_isr_odd_field(struct vpbe_display *disp_obj,
89 struct vpbe_layer *layer)
90 {
91 struct osd_state *osd_device = disp_obj->osd_device;
92 unsigned long addr;
93
94 spin_lock(&disp_obj->dma_queue_lock);
95 if (list_empty(&layer->dma_queue) ||
96 (layer->cur_frm != layer->next_frm)) {
97 spin_unlock(&disp_obj->dma_queue_lock);
98 return;
99 }
100 /*
101 * one field is displayed configure
102 * the next frame if it is available
103 * otherwise hold on current frame
104 * Get next from the buffer queue
105 */
106 layer->next_frm = list_entry(layer->dma_queue.next,
107 struct vpbe_disp_buffer, list);
108 /* Remove that from the buffer queue */
109 list_del(&layer->next_frm->list);
110 spin_unlock(&disp_obj->dma_queue_lock);
111 /* Mark state of the frame to active */
112 layer->next_frm->vb.state = VB2_BUF_STATE_ACTIVE;
113 addr = vb2_dma_contig_plane_dma_addr(&layer->next_frm->vb, 0);
114 osd_device->ops.start_layer(osd_device,
115 layer->layer_info.id,
116 addr,
117 disp_obj->cbcr_ofst);
118 }
119
120 /* interrupt service routine */
121 static irqreturn_t venc_isr(int irq, void *arg)
122 {
123 struct vpbe_display *disp_dev = (struct vpbe_display *)arg;
124 struct vpbe_layer *layer;
125 static unsigned last_event;
126 unsigned event = 0;
127 int fid;
128 int i;
129
130 if ((NULL == arg) || (NULL == disp_dev->dev[0]))
131 return IRQ_HANDLED;
132
133 if (venc_is_second_field(disp_dev))
134 event |= VENC_SECOND_FIELD;
135 else
136 event |= VENC_FIRST_FIELD;
137
138 if (event == (last_event & ~VENC_END_OF_FRAME)) {
139 /*
140 * If the display is non-interlaced, then we need to flag the
141 * end-of-frame event at every interrupt regardless of the
142 * value of the FIDST bit. We can conclude that the display is
143 * non-interlaced if the value of the FIDST bit is unchanged
144 * from the previous interrupt.
145 */
146 event |= VENC_END_OF_FRAME;
147 } else if (event == VENC_SECOND_FIELD) {
148 /* end-of-frame for interlaced display */
149 event |= VENC_END_OF_FRAME;
150 }
151 last_event = event;
152
153 for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
154 layer = disp_dev->dev[i];
155 /* If streaming is started in this layer */
156 if (!layer->started)
157 continue;
158
159 if (layer->layer_first_int) {
160 layer->layer_first_int = 0;
161 continue;
162 }
163 /* Check the field format */
164 if ((V4L2_FIELD_NONE == layer->pix_fmt.field) &&
165 (event & VENC_END_OF_FRAME)) {
166 /* Progressive mode */
167
168 vpbe_isr_even_field(disp_dev, layer);
169 vpbe_isr_odd_field(disp_dev, layer);
170 } else {
171 /* Interlaced mode */
172
173 layer->field_id ^= 1;
174 if (event & VENC_FIRST_FIELD)
175 fid = 0;
176 else
177 fid = 1;
178
179 /*
180 * If field id does not match with store
181 * field id
182 */
183 if (fid != layer->field_id) {
184 /* Make them in sync */
185 layer->field_id = fid;
186 continue;
187 }
188 /*
189 * device field id and local field id are
190 * in sync. If this is even field
191 */
192 if (0 == fid)
193 vpbe_isr_even_field(disp_dev, layer);
194 else /* odd field */
195 vpbe_isr_odd_field(disp_dev, layer);
196 }
197 }
198
199 return IRQ_HANDLED;
200 }
201
202 /*
203 * vpbe_buffer_prepare()
204 * This is the callback function called from vb2_qbuf() function
205 * the buffer is prepared and user space virtual address is converted into
206 * physical address
207 */
208 static int vpbe_buffer_prepare(struct vb2_buffer *vb)
209 {
210 struct vpbe_fh *fh = vb2_get_drv_priv(vb->vb2_queue);
211 struct vb2_queue *q = vb->vb2_queue;
212 struct vpbe_layer *layer = fh->layer;
213 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
214 unsigned long addr;
215
216 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
217 "vpbe_buffer_prepare\n");
218
219 if (vb->state != VB2_BUF_STATE_ACTIVE &&
220 vb->state != VB2_BUF_STATE_PREPARED) {
221 vb2_set_plane_payload(vb, 0, layer->pix_fmt.sizeimage);
222 if (vb2_plane_vaddr(vb, 0) &&
223 vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
224 return -EINVAL;
225
226 addr = vb2_dma_contig_plane_dma_addr(vb, 0);
227 if (q->streaming) {
228 if (!IS_ALIGNED(addr, 8)) {
229 v4l2_err(&vpbe_dev->v4l2_dev,
230 "buffer_prepare:offset is \
231 not aligned to 32 bytes\n");
232 return -EINVAL;
233 }
234 }
235 }
236 return 0;
237 }
238
239 /*
240 * vpbe_buffer_setup()
241 * This function allocates memory for the buffers
242 */
243 static int
244 vpbe_buffer_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
245 unsigned int *nbuffers, unsigned int *nplanes,
246 unsigned int sizes[], void *alloc_ctxs[])
247
248 {
249 /* Get the file handle object and layer object */
250 struct vpbe_fh *fh = vb2_get_drv_priv(vq);
251 struct vpbe_layer *layer = fh->layer;
252 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
253
254 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_buffer_setup\n");
255
256 /* Store number of buffers allocated in numbuffer member */
257 if (*nbuffers < VPBE_DEFAULT_NUM_BUFS)
258 *nbuffers = layer->numbuffers = VPBE_DEFAULT_NUM_BUFS;
259
260 *nplanes = 1;
261 sizes[0] = layer->pix_fmt.sizeimage;
262 alloc_ctxs[0] = layer->alloc_ctx;
263
264 return 0;
265 }
266
267 /*
268 * vpbe_buffer_queue()
269 * This function adds the buffer to DMA queue
270 */
271 static void vpbe_buffer_queue(struct vb2_buffer *vb)
272 {
273 /* Get the file handle object and layer object */
274 struct vpbe_fh *fh = vb2_get_drv_priv(vb->vb2_queue);
275 struct vpbe_disp_buffer *buf = container_of(vb,
276 struct vpbe_disp_buffer, vb);
277 struct vpbe_layer *layer = fh->layer;
278 struct vpbe_display *disp = fh->disp_dev;
279 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
280 unsigned long flags;
281
282 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
283 "vpbe_buffer_queue\n");
284
285 /* add the buffer to the DMA queue */
286 spin_lock_irqsave(&disp->dma_queue_lock, flags);
287 list_add_tail(&buf->list, &layer->dma_queue);
288 spin_unlock_irqrestore(&disp->dma_queue_lock, flags);
289 }
290
291 /*
292 * vpbe_buf_cleanup()
293 * This function is called from the vb2 layer to free memory allocated to
294 * the buffers
295 */
296 static void vpbe_buf_cleanup(struct vb2_buffer *vb)
297 {
298 /* Get the file handle object and layer object */
299 struct vpbe_fh *fh = vb2_get_drv_priv(vb->vb2_queue);
300 struct vpbe_layer *layer = fh->layer;
301 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
302 struct vpbe_disp_buffer *buf = container_of(vb,
303 struct vpbe_disp_buffer, vb);
304 unsigned long flags;
305
306 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
307 "vpbe_buf_cleanup\n");
308
309 spin_lock_irqsave(&layer->irqlock, flags);
310 if (vb->state == VB2_BUF_STATE_ACTIVE)
311 list_del_init(&buf->list);
312 spin_unlock_irqrestore(&layer->irqlock, flags);
313 }
314
315 static void vpbe_wait_prepare(struct vb2_queue *vq)
316 {
317 struct vpbe_fh *fh = vb2_get_drv_priv(vq);
318 struct vpbe_layer *layer = fh->layer;
319
320 mutex_unlock(&layer->opslock);
321 }
322
323 static void vpbe_wait_finish(struct vb2_queue *vq)
324 {
325 struct vpbe_fh *fh = vb2_get_drv_priv(vq);
326 struct vpbe_layer *layer = fh->layer;
327
328 mutex_lock(&layer->opslock);
329 }
330
331 static int vpbe_buffer_init(struct vb2_buffer *vb)
332 {
333 struct vpbe_disp_buffer *buf = container_of(vb,
334 struct vpbe_disp_buffer, vb);
335
336 INIT_LIST_HEAD(&buf->list);
337 return 0;
338 }
339
340 static int vpbe_start_streaming(struct vb2_queue *vq, unsigned int count)
341 {
342 struct vpbe_fh *fh = vb2_get_drv_priv(vq);
343 struct vpbe_layer *layer = fh->layer;
344 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
345 int ret;
346
347 /* If buffer queue is empty, return error */
348 if (list_empty(&layer->dma_queue)) {
349 v4l2_err(&vpbe_dev->v4l2_dev, "buffer queue is empty\n");
350 return -EINVAL;
351 }
352 /* Get the next frame from the buffer queue */
353 layer->next_frm = layer->cur_frm = list_entry(layer->dma_queue.next,
354 struct vpbe_disp_buffer, list);
355 /* Remove buffer from the buffer queue */
356 list_del(&layer->cur_frm->list);
357 /* Mark state of the current frame to active */
358 layer->cur_frm->vb.state = VB2_BUF_STATE_ACTIVE;
359 /* Initialize field_id and started member */
360 layer->field_id = 0;
361
362 /* Set parameters in OSD and VENC */
363 ret = vpbe_set_osd_display_params(fh->disp_dev, layer);
364 if (ret < 0)
365 return ret;
366
367 /*
368 * if request format is yuv420 semiplanar, need to
369 * enable both video windows
370 */
371 layer->started = 1;
372 layer->layer_first_int = 1;
373
374 return ret;
375 }
376
377 static int vpbe_stop_streaming(struct vb2_queue *vq)
378 {
379 struct vpbe_fh *fh = vb2_get_drv_priv(vq);
380 struct vpbe_layer *layer = fh->layer;
381
382 if (!vb2_is_streaming(vq))
383 return 0;
384
385 /* release all active buffers */
386 while (!list_empty(&layer->dma_queue)) {
387 layer->next_frm = list_entry(layer->dma_queue.next,
388 struct vpbe_disp_buffer, list);
389 list_del(&layer->next_frm->list);
390 vb2_buffer_done(&layer->next_frm->vb, VB2_BUF_STATE_ERROR);
391 }
392
393 return 0;
394 }
395
396 static struct vb2_ops video_qops = {
397 .queue_setup = vpbe_buffer_queue_setup,
398 .wait_prepare = vpbe_wait_prepare,
399 .wait_finish = vpbe_wait_finish,
400 .buf_init = vpbe_buffer_init,
401 .buf_prepare = vpbe_buffer_prepare,
402 .start_streaming = vpbe_start_streaming,
403 .stop_streaming = vpbe_stop_streaming,
404 .buf_cleanup = vpbe_buf_cleanup,
405 .buf_queue = vpbe_buffer_queue,
406 };
407
408 static
409 struct vpbe_layer*
410 _vpbe_display_get_other_win_layer(struct vpbe_display *disp_dev,
411 struct vpbe_layer *layer)
412 {
413 enum vpbe_display_device_id thiswin, otherwin;
414 thiswin = layer->device_id;
415
416 otherwin = (thiswin == VPBE_DISPLAY_DEVICE_0) ?
417 VPBE_DISPLAY_DEVICE_1 : VPBE_DISPLAY_DEVICE_0;
418 return disp_dev->dev[otherwin];
419 }
420
421 static int vpbe_set_osd_display_params(struct vpbe_display *disp_dev,
422 struct vpbe_layer *layer)
423 {
424 struct osd_layer_config *cfg = &layer->layer_info.config;
425 struct osd_state *osd_device = disp_dev->osd_device;
426 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
427 unsigned long addr;
428 int ret;
429
430 addr = vb2_dma_contig_plane_dma_addr(&layer->cur_frm->vb, 0);
431 /* Set address in the display registers */
432 osd_device->ops.start_layer(osd_device,
433 layer->layer_info.id,
434 addr,
435 disp_dev->cbcr_ofst);
436
437 ret = osd_device->ops.enable_layer(osd_device,
438 layer->layer_info.id, 0);
439 if (ret < 0) {
440 v4l2_err(&vpbe_dev->v4l2_dev,
441 "Error in enabling osd window layer 0\n");
442 return -1;
443 }
444
445 /* Enable the window */
446 layer->layer_info.enable = 1;
447 if (cfg->pixfmt == PIXFMT_NV12) {
448 struct vpbe_layer *otherlayer =
449 _vpbe_display_get_other_win_layer(disp_dev, layer);
450
451 ret = osd_device->ops.enable_layer(osd_device,
452 otherlayer->layer_info.id, 1);
453 if (ret < 0) {
454 v4l2_err(&vpbe_dev->v4l2_dev,
455 "Error in enabling osd window layer 1\n");
456 return -1;
457 }
458 otherlayer->layer_info.enable = 1;
459 }
460 return 0;
461 }
462
463 static void
464 vpbe_disp_calculate_scale_factor(struct vpbe_display *disp_dev,
465 struct vpbe_layer *layer,
466 int expected_xsize, int expected_ysize)
467 {
468 struct display_layer_info *layer_info = &layer->layer_info;
469 struct v4l2_pix_format *pixfmt = &layer->pix_fmt;
470 struct osd_layer_config *cfg = &layer->layer_info.config;
471 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
472 int calculated_xsize;
473 int h_exp = 0;
474 int v_exp = 0;
475 int h_scale;
476 int v_scale;
477
478 v4l2_std_id standard_id = vpbe_dev->current_timings.std_id;
479
480 /*
481 * Application initially set the image format. Current display
482 * size is obtained from the vpbe display controller. expected_xsize
483 * and expected_ysize are set through S_CROP ioctl. Based on this,
484 * driver will calculate the scale factors for vertical and
485 * horizontal direction so that the image is displayed scaled
486 * and expanded. Application uses expansion to display the image
487 * in a square pixel. Otherwise it is displayed using displays
488 * pixel aspect ratio.It is expected that application chooses
489 * the crop coordinates for cropped or scaled display. if crop
490 * size is less than the image size, it is displayed cropped or
491 * it is displayed scaled and/or expanded.
492 *
493 * to begin with, set the crop window same as expected. Later we
494 * will override with scaled window size
495 */
496
497 cfg->xsize = pixfmt->width;
498 cfg->ysize = pixfmt->height;
499 layer_info->h_zoom = ZOOM_X1; /* no horizontal zoom */
500 layer_info->v_zoom = ZOOM_X1; /* no horizontal zoom */
501 layer_info->h_exp = H_EXP_OFF; /* no horizontal zoom */
502 layer_info->v_exp = V_EXP_OFF; /* no horizontal zoom */
503
504 if (pixfmt->width < expected_xsize) {
505 h_scale = vpbe_dev->current_timings.xres / pixfmt->width;
506 if (h_scale < 2)
507 h_scale = 1;
508 else if (h_scale >= 4)
509 h_scale = 4;
510 else
511 h_scale = 2;
512 cfg->xsize *= h_scale;
513 if (cfg->xsize < expected_xsize) {
514 if ((standard_id & V4L2_STD_525_60) ||
515 (standard_id & V4L2_STD_625_50)) {
516 calculated_xsize = (cfg->xsize *
517 VPBE_DISPLAY_H_EXP_RATIO_N) /
518 VPBE_DISPLAY_H_EXP_RATIO_D;
519 if (calculated_xsize <= expected_xsize) {
520 h_exp = 1;
521 cfg->xsize = calculated_xsize;
522 }
523 }
524 }
525 if (h_scale == 2)
526 layer_info->h_zoom = ZOOM_X2;
527 else if (h_scale == 4)
528 layer_info->h_zoom = ZOOM_X4;
529 if (h_exp)
530 layer_info->h_exp = H_EXP_9_OVER_8;
531 } else {
532 /* no scaling, only cropping. Set display area to crop area */
533 cfg->xsize = expected_xsize;
534 }
535
536 if (pixfmt->height < expected_ysize) {
537 v_scale = expected_ysize / pixfmt->height;
538 if (v_scale < 2)
539 v_scale = 1;
540 else if (v_scale >= 4)
541 v_scale = 4;
542 else
543 v_scale = 2;
544 cfg->ysize *= v_scale;
545 if (cfg->ysize < expected_ysize) {
546 if ((standard_id & V4L2_STD_625_50)) {
547 calculated_xsize = (cfg->ysize *
548 VPBE_DISPLAY_V_EXP_RATIO_N) /
549 VPBE_DISPLAY_V_EXP_RATIO_D;
550 if (calculated_xsize <= expected_ysize) {
551 v_exp = 1;
552 cfg->ysize = calculated_xsize;
553 }
554 }
555 }
556 if (v_scale == 2)
557 layer_info->v_zoom = ZOOM_X2;
558 else if (v_scale == 4)
559 layer_info->v_zoom = ZOOM_X4;
560 if (v_exp)
561 layer_info->h_exp = V_EXP_6_OVER_5;
562 } else {
563 /* no scaling, only cropping. Set display area to crop area */
564 cfg->ysize = expected_ysize;
565 }
566 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
567 "crop display xsize = %d, ysize = %d\n",
568 cfg->xsize, cfg->ysize);
569 }
570
571 static void vpbe_disp_adj_position(struct vpbe_display *disp_dev,
572 struct vpbe_layer *layer,
573 int top, int left)
574 {
575 struct osd_layer_config *cfg = &layer->layer_info.config;
576 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
577
578 cfg->xpos = min((unsigned int)left,
579 vpbe_dev->current_timings.xres - cfg->xsize);
580 cfg->ypos = min((unsigned int)top,
581 vpbe_dev->current_timings.yres - cfg->ysize);
582
583 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
584 "new xpos = %d, ypos = %d\n",
585 cfg->xpos, cfg->ypos);
586 }
587
588 static void vpbe_disp_check_window_params(struct vpbe_display *disp_dev,
589 struct v4l2_rect *c)
590 {
591 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
592
593 if ((c->width == 0) ||
594 ((c->width + c->left) > vpbe_dev->current_timings.xres))
595 c->width = vpbe_dev->current_timings.xres - c->left;
596
597 if ((c->height == 0) || ((c->height + c->top) >
598 vpbe_dev->current_timings.yres))
599 c->height = vpbe_dev->current_timings.yres - c->top;
600
601 /* window height must be even for interlaced display */
602 if (vpbe_dev->current_timings.interlaced)
603 c->height &= (~0x01);
604
605 }
606
607 /**
608 * vpbe_try_format()
609 * If user application provides width and height, and have bytesperline set
610 * to zero, driver calculates bytesperline and sizeimage based on hardware
611 * limits.
612 */
613 static int vpbe_try_format(struct vpbe_display *disp_dev,
614 struct v4l2_pix_format *pixfmt, int check)
615 {
616 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
617 int min_height = 1;
618 int min_width = 32;
619 int max_height;
620 int max_width;
621 int bpp;
622
623 if ((pixfmt->pixelformat != V4L2_PIX_FMT_UYVY) &&
624 (pixfmt->pixelformat != V4L2_PIX_FMT_NV12))
625 /* choose default as V4L2_PIX_FMT_UYVY */
626 pixfmt->pixelformat = V4L2_PIX_FMT_UYVY;
627
628 /* Check the field format */
629 if ((pixfmt->field != V4L2_FIELD_INTERLACED) &&
630 (pixfmt->field != V4L2_FIELD_NONE)) {
631 if (vpbe_dev->current_timings.interlaced)
632 pixfmt->field = V4L2_FIELD_INTERLACED;
633 else
634 pixfmt->field = V4L2_FIELD_NONE;
635 }
636
637 if (pixfmt->field == V4L2_FIELD_INTERLACED)
638 min_height = 2;
639
640 if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
641 bpp = 1;
642 else
643 bpp = 2;
644
645 max_width = vpbe_dev->current_timings.xres;
646 max_height = vpbe_dev->current_timings.yres;
647
648 min_width /= bpp;
649
650 if (!pixfmt->width || (pixfmt->width < min_width) ||
651 (pixfmt->width > max_width)) {
652 pixfmt->width = vpbe_dev->current_timings.xres;
653 }
654
655 if (!pixfmt->height || (pixfmt->height < min_height) ||
656 (pixfmt->height > max_height)) {
657 pixfmt->height = vpbe_dev->current_timings.yres;
658 }
659
660 if (pixfmt->bytesperline < (pixfmt->width * bpp))
661 pixfmt->bytesperline = pixfmt->width * bpp;
662
663 /* Make the bytesperline 32 byte aligned */
664 pixfmt->bytesperline = ((pixfmt->width * bpp + 31) & ~31);
665
666 if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
667 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height +
668 (pixfmt->bytesperline * pixfmt->height >> 1);
669 else
670 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
671
672 return 0;
673 }
674
675 static int vpbe_display_g_priority(struct file *file, void *priv,
676 enum v4l2_priority *p)
677 {
678 struct vpbe_fh *fh = file->private_data;
679 struct vpbe_layer *layer = fh->layer;
680
681 *p = v4l2_prio_max(&layer->prio);
682
683 return 0;
684 }
685
686 static int vpbe_display_s_priority(struct file *file, void *priv,
687 enum v4l2_priority p)
688 {
689 struct vpbe_fh *fh = file->private_data;
690 struct vpbe_layer *layer = fh->layer;
691 int ret;
692
693 ret = v4l2_prio_change(&layer->prio, &fh->prio, p);
694
695 return ret;
696 }
697
698 static int vpbe_display_querycap(struct file *file, void *priv,
699 struct v4l2_capability *cap)
700 {
701 struct vpbe_fh *fh = file->private_data;
702 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
703
704 cap->version = VPBE_DISPLAY_VERSION_CODE;
705 cap->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
706 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
707 snprintf(cap->driver, sizeof(cap->driver), "%s",
708 dev_name(vpbe_dev->pdev));
709 snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
710 dev_name(vpbe_dev->pdev));
711 strlcpy(cap->card, vpbe_dev->cfg->module_name, sizeof(cap->card));
712
713 return 0;
714 }
715
716 static int vpbe_display_s_crop(struct file *file, void *priv,
717 const struct v4l2_crop *crop)
718 {
719 struct vpbe_fh *fh = file->private_data;
720 struct vpbe_layer *layer = fh->layer;
721 struct vpbe_display *disp_dev = fh->disp_dev;
722 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
723 struct osd_layer_config *cfg = &layer->layer_info.config;
724 struct osd_state *osd_device = disp_dev->osd_device;
725 struct v4l2_rect rect = crop->c;
726 int ret;
727
728 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
729 "VIDIOC_S_CROP, layer id = %d\n", layer->device_id);
730
731 if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
732 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buf type\n");
733 return -EINVAL;
734 }
735
736 if (rect.top < 0)
737 rect.top = 0;
738 if (rect.left < 0)
739 rect.left = 0;
740
741 vpbe_disp_check_window_params(disp_dev, &rect);
742
743 osd_device->ops.get_layer_config(osd_device,
744 layer->layer_info.id, cfg);
745
746 vpbe_disp_calculate_scale_factor(disp_dev, layer,
747 rect.width,
748 rect.height);
749 vpbe_disp_adj_position(disp_dev, layer, rect.top,
750 rect.left);
751 ret = osd_device->ops.set_layer_config(osd_device,
752 layer->layer_info.id, cfg);
753 if (ret < 0) {
754 v4l2_err(&vpbe_dev->v4l2_dev,
755 "Error in set layer config:\n");
756 return -EINVAL;
757 }
758
759 /* apply zooming and h or v expansion */
760 osd_device->ops.set_zoom(osd_device,
761 layer->layer_info.id,
762 layer->layer_info.h_zoom,
763 layer->layer_info.v_zoom);
764 ret = osd_device->ops.set_vid_expansion(osd_device,
765 layer->layer_info.h_exp,
766 layer->layer_info.v_exp);
767 if (ret < 0) {
768 v4l2_err(&vpbe_dev->v4l2_dev,
769 "Error in set vid expansion:\n");
770 return -EINVAL;
771 }
772
773 if ((layer->layer_info.h_zoom != ZOOM_X1) ||
774 (layer->layer_info.v_zoom != ZOOM_X1) ||
775 (layer->layer_info.h_exp != H_EXP_OFF) ||
776 (layer->layer_info.v_exp != V_EXP_OFF))
777 /* Enable expansion filter */
778 osd_device->ops.set_interpolation_filter(osd_device, 1);
779 else
780 osd_device->ops.set_interpolation_filter(osd_device, 0);
781
782 return 0;
783 }
784
785 static int vpbe_display_g_crop(struct file *file, void *priv,
786 struct v4l2_crop *crop)
787 {
788 struct vpbe_fh *fh = file->private_data;
789 struct vpbe_layer *layer = fh->layer;
790 struct osd_layer_config *cfg = &layer->layer_info.config;
791 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
792 struct osd_state *osd_device = fh->disp_dev->osd_device;
793 struct v4l2_rect *rect = &crop->c;
794 int ret;
795
796 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
797 "VIDIOC_G_CROP, layer id = %d\n",
798 layer->device_id);
799
800 if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
801 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buf type\n");
802 ret = -EINVAL;
803 }
804 osd_device->ops.get_layer_config(osd_device,
805 layer->layer_info.id, cfg);
806 rect->top = cfg->ypos;
807 rect->left = cfg->xpos;
808 rect->width = cfg->xsize;
809 rect->height = cfg->ysize;
810
811 return 0;
812 }
813
814 static int vpbe_display_cropcap(struct file *file, void *priv,
815 struct v4l2_cropcap *cropcap)
816 {
817 struct vpbe_fh *fh = file->private_data;
818 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
819
820 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_CROPCAP ioctl\n");
821
822 cropcap->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
823 cropcap->bounds.left = 0;
824 cropcap->bounds.top = 0;
825 cropcap->bounds.width = vpbe_dev->current_timings.xres;
826 cropcap->bounds.height = vpbe_dev->current_timings.yres;
827 cropcap->pixelaspect = vpbe_dev->current_timings.aspect;
828 cropcap->defrect = cropcap->bounds;
829 return 0;
830 }
831
832 static int vpbe_display_g_fmt(struct file *file, void *priv,
833 struct v4l2_format *fmt)
834 {
835 struct vpbe_fh *fh = file->private_data;
836 struct vpbe_layer *layer = fh->layer;
837 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
838
839 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
840 "VIDIOC_G_FMT, layer id = %d\n",
841 layer->device_id);
842
843 /* If buffer type is video output */
844 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
845 v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
846 return -EINVAL;
847 }
848 /* Fill in the information about format */
849 fmt->fmt.pix = layer->pix_fmt;
850
851 return 0;
852 }
853
854 static int vpbe_display_enum_fmt(struct file *file, void *priv,
855 struct v4l2_fmtdesc *fmt)
856 {
857 struct vpbe_fh *fh = file->private_data;
858 struct vpbe_layer *layer = fh->layer;
859 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
860 unsigned int index = 0;
861
862 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
863 "VIDIOC_ENUM_FMT, layer id = %d\n",
864 layer->device_id);
865 if (fmt->index > 1) {
866 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid format index\n");
867 return -EINVAL;
868 }
869
870 /* Fill in the information about format */
871 index = fmt->index;
872 memset(fmt, 0, sizeof(*fmt));
873 fmt->index = index;
874 fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
875 if (index == 0) {
876 strcpy(fmt->description, "YUV 4:2:2 - UYVY");
877 fmt->pixelformat = V4L2_PIX_FMT_UYVY;
878 } else {
879 strcpy(fmt->description, "Y/CbCr 4:2:0");
880 fmt->pixelformat = V4L2_PIX_FMT_NV12;
881 }
882
883 return 0;
884 }
885
886 static int vpbe_display_s_fmt(struct file *file, void *priv,
887 struct v4l2_format *fmt)
888 {
889 struct vpbe_fh *fh = file->private_data;
890 struct vpbe_layer *layer = fh->layer;
891 struct vpbe_display *disp_dev = fh->disp_dev;
892 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
893 struct osd_layer_config *cfg = &layer->layer_info.config;
894 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
895 struct osd_state *osd_device = disp_dev->osd_device;
896 int ret;
897
898 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
899 "VIDIOC_S_FMT, layer id = %d\n",
900 layer->device_id);
901
902 /* If streaming is started, return error */
903 if (layer->started) {
904 v4l2_err(&vpbe_dev->v4l2_dev, "Streaming is started\n");
905 return -EBUSY;
906 }
907 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
908 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "invalid type\n");
909 return -EINVAL;
910 }
911 /* Check for valid pixel format */
912 ret = vpbe_try_format(disp_dev, pixfmt, 1);
913 if (ret)
914 return ret;
915
916 /* YUV420 is requested, check availability of the
917 other video window */
918
919 layer->pix_fmt = *pixfmt;
920
921 /* Get osd layer config */
922 osd_device->ops.get_layer_config(osd_device,
923 layer->layer_info.id, cfg);
924 /* Store the pixel format in the layer object */
925 cfg->xsize = pixfmt->width;
926 cfg->ysize = pixfmt->height;
927 cfg->line_length = pixfmt->bytesperline;
928 cfg->ypos = 0;
929 cfg->xpos = 0;
930 cfg->interlaced = vpbe_dev->current_timings.interlaced;
931
932 if (V4L2_PIX_FMT_UYVY == pixfmt->pixelformat)
933 cfg->pixfmt = PIXFMT_YCbCrI;
934
935 /* Change of the default pixel format for both video windows */
936 if (V4L2_PIX_FMT_NV12 == pixfmt->pixelformat) {
937 struct vpbe_layer *otherlayer;
938 cfg->pixfmt = PIXFMT_NV12;
939 otherlayer = _vpbe_display_get_other_win_layer(disp_dev,
940 layer);
941 otherlayer->layer_info.config.pixfmt = PIXFMT_NV12;
942 }
943
944 /* Set the layer config in the osd window */
945 ret = osd_device->ops.set_layer_config(osd_device,
946 layer->layer_info.id, cfg);
947 if (ret < 0) {
948 v4l2_err(&vpbe_dev->v4l2_dev,
949 "Error in S_FMT params:\n");
950 return -EINVAL;
951 }
952
953 /* Readback and fill the local copy of current pix format */
954 osd_device->ops.get_layer_config(osd_device,
955 layer->layer_info.id, cfg);
956
957 return 0;
958 }
959
960 static int vpbe_display_try_fmt(struct file *file, void *priv,
961 struct v4l2_format *fmt)
962 {
963 struct vpbe_fh *fh = file->private_data;
964 struct vpbe_display *disp_dev = fh->disp_dev;
965 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
966 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
967
968 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_TRY_FMT\n");
969
970 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
971 v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
972 return -EINVAL;
973 }
974
975 /* Check for valid field format */
976 return vpbe_try_format(disp_dev, pixfmt, 0);
977
978 }
979
980 /**
981 * vpbe_display_s_std - Set the given standard in the encoder
982 *
983 * Sets the standard if supported by the current encoder. Return the status.
984 * 0 - success & -EINVAL on error
985 */
986 static int vpbe_display_s_std(struct file *file, void *priv,
987 v4l2_std_id *std_id)
988 {
989 struct vpbe_fh *fh = priv;
990 struct vpbe_layer *layer = fh->layer;
991 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
992 int ret;
993
994 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_STD\n");
995
996 /* If streaming is started, return error */
997 if (layer->started) {
998 v4l2_err(&vpbe_dev->v4l2_dev, "Streaming is started\n");
999 return -EBUSY;
1000 }
1001 if (NULL != vpbe_dev->ops.s_std) {
1002 ret = vpbe_dev->ops.s_std(vpbe_dev, std_id);
1003 if (ret) {
1004 v4l2_err(&vpbe_dev->v4l2_dev,
1005 "Failed to set standard for sub devices\n");
1006 return -EINVAL;
1007 }
1008 } else {
1009 return -EINVAL;
1010 }
1011
1012 return 0;
1013 }
1014
1015 /**
1016 * vpbe_display_g_std - Get the standard in the current encoder
1017 *
1018 * Get the standard in the current encoder. Return the status. 0 - success
1019 * -EINVAL on error
1020 */
1021 static int vpbe_display_g_std(struct file *file, void *priv,
1022 v4l2_std_id *std_id)
1023 {
1024 struct vpbe_fh *fh = priv;
1025 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1026
1027 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_STD\n");
1028
1029 /* Get the standard from the current encoder */
1030 if (vpbe_dev->current_timings.timings_type & VPBE_ENC_STD) {
1031 *std_id = vpbe_dev->current_timings.std_id;
1032 return 0;
1033 }
1034
1035 return -EINVAL;
1036 }
1037
1038 /**
1039 * vpbe_display_enum_output - enumerate outputs
1040 *
1041 * Enumerates the outputs available at the vpbe display
1042 * returns the status, -EINVAL if end of output list
1043 */
1044 static int vpbe_display_enum_output(struct file *file, void *priv,
1045 struct v4l2_output *output)
1046 {
1047 struct vpbe_fh *fh = priv;
1048 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1049 int ret;
1050
1051 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_OUTPUT\n");
1052
1053 /* Enumerate outputs */
1054
1055 if (NULL == vpbe_dev->ops.enum_outputs)
1056 return -EINVAL;
1057
1058 ret = vpbe_dev->ops.enum_outputs(vpbe_dev, output);
1059 if (ret) {
1060 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1061 "Failed to enumerate outputs\n");
1062 return -EINVAL;
1063 }
1064
1065 return 0;
1066 }
1067
1068 /**
1069 * vpbe_display_s_output - Set output to
1070 * the output specified by the index
1071 */
1072 static int vpbe_display_s_output(struct file *file, void *priv,
1073 unsigned int i)
1074 {
1075 struct vpbe_fh *fh = priv;
1076 struct vpbe_layer *layer = fh->layer;
1077 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1078 int ret;
1079
1080 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_OUTPUT\n");
1081 /* If streaming is started, return error */
1082 if (layer->started) {
1083 v4l2_err(&vpbe_dev->v4l2_dev, "Streaming is started\n");
1084 return -EBUSY;
1085 }
1086 if (NULL == vpbe_dev->ops.set_output)
1087 return -EINVAL;
1088
1089 ret = vpbe_dev->ops.set_output(vpbe_dev, i);
1090 if (ret) {
1091 v4l2_err(&vpbe_dev->v4l2_dev,
1092 "Failed to set output for sub devices\n");
1093 return -EINVAL;
1094 }
1095
1096 return 0;
1097 }
1098
1099 /**
1100 * vpbe_display_g_output - Get output from subdevice
1101 * for a given by the index
1102 */
1103 static int vpbe_display_g_output(struct file *file, void *priv,
1104 unsigned int *i)
1105 {
1106 struct vpbe_fh *fh = priv;
1107 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1108
1109 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_OUTPUT\n");
1110 /* Get the standard from the current encoder */
1111 *i = vpbe_dev->current_out_index;
1112
1113 return 0;
1114 }
1115
1116 /**
1117 * vpbe_display_enum_dv_timings - Enumerate the dv timings
1118 *
1119 * enum the timings in the current encoder. Return the status. 0 - success
1120 * -EINVAL on error
1121 */
1122 static int
1123 vpbe_display_enum_dv_timings(struct file *file, void *priv,
1124 struct v4l2_enum_dv_timings *timings)
1125 {
1126 struct vpbe_fh *fh = priv;
1127 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1128 int ret;
1129
1130 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_DV_TIMINGS\n");
1131
1132 /* Enumerate outputs */
1133 if (NULL == vpbe_dev->ops.enum_dv_timings)
1134 return -EINVAL;
1135
1136 ret = vpbe_dev->ops.enum_dv_timings(vpbe_dev, timings);
1137 if (ret) {
1138 v4l2_err(&vpbe_dev->v4l2_dev,
1139 "Failed to enumerate dv timings info\n");
1140 return -EINVAL;
1141 }
1142
1143 return 0;
1144 }
1145
1146 /**
1147 * vpbe_display_s_dv_timings - Set the dv timings
1148 *
1149 * Set the timings in the current encoder. Return the status. 0 - success
1150 * -EINVAL on error
1151 */
1152 static int
1153 vpbe_display_s_dv_timings(struct file *file, void *priv,
1154 struct v4l2_dv_timings *timings)
1155 {
1156 struct vpbe_fh *fh = priv;
1157 struct vpbe_layer *layer = fh->layer;
1158 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1159 int ret;
1160
1161 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_DV_TIMINGS\n");
1162
1163
1164 /* If streaming is started, return error */
1165 if (layer->started) {
1166 v4l2_err(&vpbe_dev->v4l2_dev, "Streaming is started\n");
1167 return -EBUSY;
1168 }
1169
1170 /* Set the given standard in the encoder */
1171 if (!vpbe_dev->ops.s_dv_timings)
1172 return -EINVAL;
1173
1174 ret = vpbe_dev->ops.s_dv_timings(vpbe_dev, timings);
1175 if (ret) {
1176 v4l2_err(&vpbe_dev->v4l2_dev,
1177 "Failed to set the dv timings info\n");
1178 return -EINVAL;
1179 }
1180 /* set the current norm to zero to be consistent. If STD is used
1181 * v4l2 layer will set the norm properly on successful s_std call
1182 */
1183 layer->video_dev.current_norm = 0;
1184
1185 return 0;
1186 }
1187
1188 /**
1189 * vpbe_display_g_dv_timings - Set the dv timings
1190 *
1191 * Get the timings in the current encoder. Return the status. 0 - success
1192 * -EINVAL on error
1193 */
1194 static int
1195 vpbe_display_g_dv_timings(struct file *file, void *priv,
1196 struct v4l2_dv_timings *dv_timings)
1197 {
1198 struct vpbe_fh *fh = priv;
1199 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1200
1201 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_DV_TIMINGS\n");
1202
1203 /* Get the given standard in the encoder */
1204
1205 if (vpbe_dev->current_timings.timings_type &
1206 VPBE_ENC_CUSTOM_TIMINGS) {
1207 *dv_timings = vpbe_dev->current_timings.dv_timings;
1208 } else {
1209 return -EINVAL;
1210 }
1211
1212 return 0;
1213 }
1214
1215 static int vpbe_display_streamoff(struct file *file, void *priv,
1216 enum v4l2_buf_type buf_type)
1217 {
1218 struct vpbe_fh *fh = file->private_data;
1219 struct vpbe_layer *layer = fh->layer;
1220 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1221 struct osd_state *osd_device = fh->disp_dev->osd_device;
1222 int ret;
1223
1224 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1225 "VIDIOC_STREAMOFF,layer id = %d\n",
1226 layer->device_id);
1227
1228 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != buf_type) {
1229 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buffer type\n");
1230 return -EINVAL;
1231 }
1232
1233 /* If io is allowed for this file handle, return error */
1234 if (!fh->io_allowed) {
1235 v4l2_err(&vpbe_dev->v4l2_dev, "No io_allowed\n");
1236 return -EACCES;
1237 }
1238
1239 /* If streaming is not started, return error */
1240 if (!layer->started) {
1241 v4l2_err(&vpbe_dev->v4l2_dev, "streaming not started in layer"
1242 " id = %d\n", layer->device_id);
1243 return -EINVAL;
1244 }
1245
1246 osd_device->ops.disable_layer(osd_device,
1247 layer->layer_info.id);
1248 layer->started = 0;
1249 ret = vb2_streamoff(&layer->buffer_queue, buf_type);
1250
1251 return ret;
1252 }
1253
1254 static int vpbe_display_streamon(struct file *file, void *priv,
1255 enum v4l2_buf_type buf_type)
1256 {
1257 struct vpbe_fh *fh = file->private_data;
1258 struct vpbe_layer *layer = fh->layer;
1259 struct vpbe_display *disp_dev = fh->disp_dev;
1260 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1261 struct osd_state *osd_device = disp_dev->osd_device;
1262 int ret;
1263
1264 osd_device->ops.disable_layer(osd_device,
1265 layer->layer_info.id);
1266
1267 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_STREAMON, layerid=%d\n",
1268 layer->device_id);
1269
1270 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != buf_type) {
1271 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buffer type\n");
1272 return -EINVAL;
1273 }
1274
1275 /* If file handle is not allowed IO, return error */
1276 if (!fh->io_allowed) {
1277 v4l2_err(&vpbe_dev->v4l2_dev, "No io_allowed\n");
1278 return -EACCES;
1279 }
1280 /* If Streaming is already started, return error */
1281 if (layer->started) {
1282 v4l2_err(&vpbe_dev->v4l2_dev, "layer is already streaming\n");
1283 return -EBUSY;
1284 }
1285
1286 /*
1287 * Call vb2_streamon to start streaming
1288 * in videobuf
1289 */
1290 ret = vb2_streamon(&layer->buffer_queue, buf_type);
1291 if (ret) {
1292 v4l2_err(&vpbe_dev->v4l2_dev,
1293 "error in vb2_streamon\n");
1294 return ret;
1295 }
1296 return ret;
1297 }
1298
1299 static int vpbe_display_dqbuf(struct file *file, void *priv,
1300 struct v4l2_buffer *buf)
1301 {
1302 struct vpbe_fh *fh = file->private_data;
1303 struct vpbe_layer *layer = fh->layer;
1304 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1305 int ret;
1306
1307 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1308 "VIDIOC_DQBUF, layer id = %d\n",
1309 layer->device_id);
1310
1311 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != buf->type) {
1312 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buffer type\n");
1313 return -EINVAL;
1314 }
1315 /* If this file handle is not allowed to do IO, return error */
1316 if (!fh->io_allowed) {
1317 v4l2_err(&vpbe_dev->v4l2_dev, "No io_allowed\n");
1318 return -EACCES;
1319 }
1320 if (file->f_flags & O_NONBLOCK)
1321 /* Call videobuf_dqbuf for non blocking mode */
1322 ret = vb2_dqbuf(&layer->buffer_queue, buf, 1);
1323 else
1324 /* Call videobuf_dqbuf for blocking mode */
1325 ret = vb2_dqbuf(&layer->buffer_queue, buf, 0);
1326
1327 return ret;
1328 }
1329
1330 static int vpbe_display_qbuf(struct file *file, void *priv,
1331 struct v4l2_buffer *p)
1332 {
1333 struct vpbe_fh *fh = file->private_data;
1334 struct vpbe_layer *layer = fh->layer;
1335 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1336
1337 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1338 "VIDIOC_QBUF, layer id = %d\n",
1339 layer->device_id);
1340
1341 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != p->type) {
1342 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buffer type\n");
1343 return -EINVAL;
1344 }
1345
1346 /* If this file handle is not allowed to do IO, return error */
1347 if (!fh->io_allowed) {
1348 v4l2_err(&vpbe_dev->v4l2_dev, "No io_allowed\n");
1349 return -EACCES;
1350 }
1351
1352 return vb2_qbuf(&layer->buffer_queue, p);
1353 }
1354
1355 static int vpbe_display_querybuf(struct file *file, void *priv,
1356 struct v4l2_buffer *buf)
1357 {
1358 struct vpbe_fh *fh = file->private_data;
1359 struct vpbe_layer *layer = fh->layer;
1360 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1361
1362 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1363 "VIDIOC_QUERYBUF, layer id = %d\n",
1364 layer->device_id);
1365
1366 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != buf->type) {
1367 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buffer type\n");
1368 return -EINVAL;
1369 }
1370 /* Call vb2_querybuf to get information */
1371 return vb2_querybuf(&layer->buffer_queue, buf);
1372 }
1373
1374 static int vpbe_display_reqbufs(struct file *file, void *priv,
1375 struct v4l2_requestbuffers *req_buf)
1376 {
1377 struct vpbe_fh *fh = file->private_data;
1378 struct vpbe_layer *layer = fh->layer;
1379 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1380 struct vb2_queue *q;
1381 int ret;
1382 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_reqbufs\n");
1383
1384 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != req_buf->type) {
1385 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buffer type\n");
1386 return -EINVAL;
1387 }
1388
1389 /* If io users of the layer is not zero, return error */
1390 if (0 != layer->io_usrs) {
1391 v4l2_err(&vpbe_dev->v4l2_dev, "not IO user\n");
1392 return -EBUSY;
1393 }
1394 /* Initialize videobuf queue as per the buffer type */
1395 layer->alloc_ctx = vb2_dma_contig_init_ctx(vpbe_dev->pdev);
1396 if (!layer->alloc_ctx) {
1397 v4l2_err(&vpbe_dev->v4l2_dev, "Failed to get the context\n");
1398 return -EINVAL;
1399 }
1400 q = &layer->buffer_queue;
1401 memset(q, 0, sizeof(*q));
1402 q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1403 q->io_modes = VB2_MMAP | VB2_USERPTR;
1404 q->drv_priv = fh;
1405 q->ops = &video_qops;
1406 q->mem_ops = &vb2_dma_contig_memops;
1407 q->buf_struct_size = sizeof(struct vpbe_disp_buffer);
1408
1409 ret = vb2_queue_init(q);
1410 if (ret) {
1411 v4l2_err(&vpbe_dev->v4l2_dev, "vb2_queue_init() failed\n");
1412 vb2_dma_contig_cleanup_ctx(layer->alloc_ctx);
1413 return ret;
1414 }
1415 /* Set io allowed member of file handle to TRUE */
1416 fh->io_allowed = 1;
1417 /* Increment io usrs member of layer object to 1 */
1418 layer->io_usrs = 1;
1419 /* Store type of memory requested in layer object */
1420 layer->memory = req_buf->memory;
1421 /* Initialize buffer queue */
1422 INIT_LIST_HEAD(&layer->dma_queue);
1423 /* Allocate buffers */
1424 return vb2_reqbufs(q, req_buf);
1425 }
1426
1427 /*
1428 * vpbe_display_mmap()
1429 * It is used to map kernel space buffers into user spaces
1430 */
1431 static int vpbe_display_mmap(struct file *filep, struct vm_area_struct *vma)
1432 {
1433 /* Get the layer object and file handle object */
1434 struct vpbe_fh *fh = filep->private_data;
1435 struct vpbe_layer *layer = fh->layer;
1436 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1437 int ret;
1438
1439 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_mmap\n");
1440
1441 if (mutex_lock_interruptible(&layer->opslock))
1442 return -ERESTARTSYS;
1443 ret = vb2_mmap(&layer->buffer_queue, vma);
1444 mutex_unlock(&layer->opslock);
1445 return ret;
1446 }
1447
1448 /* vpbe_display_poll(): It is used for select/poll system call
1449 */
1450 static unsigned int vpbe_display_poll(struct file *filep, poll_table *wait)
1451 {
1452 struct vpbe_fh *fh = filep->private_data;
1453 struct vpbe_layer *layer = fh->layer;
1454 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1455 unsigned int err = 0;
1456
1457 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_poll\n");
1458 if (layer->started) {
1459 mutex_lock(&layer->opslock);
1460 err = vb2_poll(&layer->buffer_queue, filep, wait);
1461 mutex_unlock(&layer->opslock);
1462 }
1463 return err;
1464 }
1465
1466 /*
1467 * vpbe_display_open()
1468 * It creates object of file handle structure and stores it in private_data
1469 * member of filepointer
1470 */
1471 static int vpbe_display_open(struct file *file)
1472 {
1473 struct vpbe_fh *fh = NULL;
1474 struct vpbe_layer *layer = video_drvdata(file);
1475 struct vpbe_display *disp_dev = layer->disp_dev;
1476 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1477 struct osd_state *osd_device = disp_dev->osd_device;
1478 int err;
1479
1480 /* Allocate memory for the file handle object */
1481 fh = kmalloc(sizeof(struct vpbe_fh), GFP_KERNEL);
1482 if (fh == NULL) {
1483 v4l2_err(&vpbe_dev->v4l2_dev,
1484 "unable to allocate memory for file handle object\n");
1485 return -ENOMEM;
1486 }
1487 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1488 "vpbe display open plane = %d\n",
1489 layer->device_id);
1490
1491 /* store pointer to fh in private_data member of filep */
1492 file->private_data = fh;
1493 fh->layer = layer;
1494 fh->disp_dev = disp_dev;
1495
1496 if (!layer->usrs) {
1497 if (mutex_lock_interruptible(&layer->opslock))
1498 return -ERESTARTSYS;
1499 /* First claim the layer for this device */
1500 err = osd_device->ops.request_layer(osd_device,
1501 layer->layer_info.id);
1502 mutex_unlock(&layer->opslock);
1503 if (err < 0) {
1504 /* Couldn't get layer */
1505 v4l2_err(&vpbe_dev->v4l2_dev,
1506 "Display Manager failed to allocate layer\n");
1507 kfree(fh);
1508 return -EINVAL;
1509 }
1510 }
1511 /* Increment layer usrs counter */
1512 layer->usrs++;
1513 /* Set io_allowed member to false */
1514 fh->io_allowed = 0;
1515 /* Initialize priority of this instance to default priority */
1516 fh->prio = V4L2_PRIORITY_UNSET;
1517 v4l2_prio_open(&layer->prio, &fh->prio);
1518 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1519 "vpbe display device opened successfully\n");
1520 return 0;
1521 }
1522
1523 /*
1524 * vpbe_display_release()
1525 * This function deletes buffer queue, frees the buffers and the davinci
1526 * display file * handle
1527 */
1528 static int vpbe_display_release(struct file *file)
1529 {
1530 /* Get the layer object and file handle object */
1531 struct vpbe_fh *fh = file->private_data;
1532 struct vpbe_layer *layer = fh->layer;
1533 struct osd_layer_config *cfg = &layer->layer_info.config;
1534 struct vpbe_display *disp_dev = fh->disp_dev;
1535 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1536 struct osd_state *osd_device = disp_dev->osd_device;
1537
1538 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_release\n");
1539
1540 mutex_lock(&layer->opslock);
1541 /* if this instance is doing IO */
1542 if (fh->io_allowed) {
1543 /* Reset io_usrs member of layer object */
1544 layer->io_usrs = 0;
1545
1546 osd_device->ops.disable_layer(osd_device,
1547 layer->layer_info.id);
1548 layer->started = 0;
1549 /* Free buffers allocated */
1550 vb2_queue_release(&layer->buffer_queue);
1551 vb2_dma_contig_cleanup_ctx(&layer->buffer_queue);
1552 }
1553
1554 /* Decrement layer usrs counter */
1555 layer->usrs--;
1556 /* If this file handle has initialize encoder device, reset it */
1557 if (!layer->usrs) {
1558 if (cfg->pixfmt == PIXFMT_NV12) {
1559 struct vpbe_layer *otherlayer;
1560 otherlayer =
1561 _vpbe_display_get_other_win_layer(disp_dev, layer);
1562 osd_device->ops.disable_layer(osd_device,
1563 otherlayer->layer_info.id);
1564 osd_device->ops.release_layer(osd_device,
1565 otherlayer->layer_info.id);
1566 }
1567 osd_device->ops.disable_layer(osd_device,
1568 layer->layer_info.id);
1569 osd_device->ops.release_layer(osd_device,
1570 layer->layer_info.id);
1571 }
1572 /* Close the priority */
1573 v4l2_prio_close(&layer->prio, fh->prio);
1574 file->private_data = NULL;
1575 mutex_unlock(&layer->opslock);
1576
1577 /* Free memory allocated to file handle object */
1578 kfree(fh);
1579
1580 disp_dev->cbcr_ofst = 0;
1581
1582 return 0;
1583 }
1584
1585 #ifdef CONFIG_VIDEO_ADV_DEBUG
1586 static int vpbe_display_g_register(struct file *file, void *priv,
1587 struct v4l2_dbg_register *reg)
1588 {
1589 struct v4l2_dbg_match *match = &reg->match;
1590 struct vpbe_fh *fh = file->private_data;
1591 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1592
1593 if (match->type >= 2) {
1594 v4l2_subdev_call(vpbe_dev->venc,
1595 core,
1596 g_register,
1597 reg);
1598 }
1599
1600 return 0;
1601 }
1602
1603 static int vpbe_display_s_register(struct file *file, void *priv,
1604 struct v4l2_dbg_register *reg)
1605 {
1606 return 0;
1607 }
1608 #endif
1609
1610 /* vpbe capture ioctl operations */
1611 static const struct v4l2_ioctl_ops vpbe_ioctl_ops = {
1612 .vidioc_querycap = vpbe_display_querycap,
1613 .vidioc_g_fmt_vid_out = vpbe_display_g_fmt,
1614 .vidioc_enum_fmt_vid_out = vpbe_display_enum_fmt,
1615 .vidioc_s_fmt_vid_out = vpbe_display_s_fmt,
1616 .vidioc_try_fmt_vid_out = vpbe_display_try_fmt,
1617 .vidioc_reqbufs = vpbe_display_reqbufs,
1618 .vidioc_querybuf = vpbe_display_querybuf,
1619 .vidioc_qbuf = vpbe_display_qbuf,
1620 .vidioc_dqbuf = vpbe_display_dqbuf,
1621 .vidioc_streamon = vpbe_display_streamon,
1622 .vidioc_streamoff = vpbe_display_streamoff,
1623 .vidioc_cropcap = vpbe_display_cropcap,
1624 .vidioc_g_crop = vpbe_display_g_crop,
1625 .vidioc_s_crop = vpbe_display_s_crop,
1626 .vidioc_g_priority = vpbe_display_g_priority,
1627 .vidioc_s_priority = vpbe_display_s_priority,
1628 .vidioc_s_std = vpbe_display_s_std,
1629 .vidioc_g_std = vpbe_display_g_std,
1630 .vidioc_enum_output = vpbe_display_enum_output,
1631 .vidioc_s_output = vpbe_display_s_output,
1632 .vidioc_g_output = vpbe_display_g_output,
1633 .vidioc_s_dv_timings = vpbe_display_s_dv_timings,
1634 .vidioc_g_dv_timings = vpbe_display_g_dv_timings,
1635 .vidioc_enum_dv_timings = vpbe_display_enum_dv_timings,
1636 #ifdef CONFIG_VIDEO_ADV_DEBUG
1637 .vidioc_g_register = vpbe_display_g_register,
1638 .vidioc_s_register = vpbe_display_s_register,
1639 #endif
1640 };
1641
1642 static struct v4l2_file_operations vpbe_fops = {
1643 .owner = THIS_MODULE,
1644 .open = vpbe_display_open,
1645 .release = vpbe_display_release,
1646 .unlocked_ioctl = video_ioctl2,
1647 .mmap = vpbe_display_mmap,
1648 .poll = vpbe_display_poll
1649 };
1650
1651 static int vpbe_device_get(struct device *dev, void *data)
1652 {
1653 struct platform_device *pdev = to_platform_device(dev);
1654 struct vpbe_display *vpbe_disp = data;
1655
1656 if (strcmp("vpbe_controller", pdev->name) == 0)
1657 vpbe_disp->vpbe_dev = platform_get_drvdata(pdev);
1658
1659 if (strcmp("vpbe-osd", pdev->name) == 0)
1660 vpbe_disp->osd_device = platform_get_drvdata(pdev);
1661
1662 return 0;
1663 }
1664
1665 static __devinit int init_vpbe_layer(int i, struct vpbe_display *disp_dev,
1666 struct platform_device *pdev)
1667 {
1668 struct vpbe_layer *vpbe_display_layer = NULL;
1669 struct video_device *vbd = NULL;
1670
1671 /* Allocate memory for four plane display objects */
1672
1673 disp_dev->dev[i] =
1674 kzalloc(sizeof(struct vpbe_layer), GFP_KERNEL);
1675
1676 /* If memory allocation fails, return error */
1677 if (!disp_dev->dev[i]) {
1678 printk(KERN_ERR "ran out of memory\n");
1679 return -ENOMEM;
1680 }
1681 spin_lock_init(&disp_dev->dev[i]->irqlock);
1682 mutex_init(&disp_dev->dev[i]->opslock);
1683
1684 /* Get the pointer to the layer object */
1685 vpbe_display_layer = disp_dev->dev[i];
1686 vbd = &vpbe_display_layer->video_dev;
1687 /* Initialize field of video device */
1688 vbd->release = video_device_release_empty;
1689 vbd->fops = &vpbe_fops;
1690 vbd->ioctl_ops = &vpbe_ioctl_ops;
1691 vbd->minor = -1;
1692 vbd->v4l2_dev = &disp_dev->vpbe_dev->v4l2_dev;
1693 vbd->lock = &vpbe_display_layer->opslock;
1694 vbd->vfl_dir = VFL_DIR_TX;
1695
1696 if (disp_dev->vpbe_dev->current_timings.timings_type &
1697 VPBE_ENC_STD) {
1698 vbd->tvnorms = (V4L2_STD_525_60 | V4L2_STD_625_50);
1699 vbd->current_norm =
1700 disp_dev->vpbe_dev->current_timings.std_id;
1701 } else
1702 vbd->current_norm = 0;
1703
1704 snprintf(vbd->name, sizeof(vbd->name),
1705 "DaVinci_VPBE Display_DRIVER_V%d.%d.%d",
1706 (VPBE_DISPLAY_VERSION_CODE >> 16) & 0xff,
1707 (VPBE_DISPLAY_VERSION_CODE >> 8) & 0xff,
1708 (VPBE_DISPLAY_VERSION_CODE) & 0xff);
1709
1710 vpbe_display_layer->device_id = i;
1711
1712 vpbe_display_layer->layer_info.id =
1713 ((i == VPBE_DISPLAY_DEVICE_0) ? WIN_VID0 : WIN_VID1);
1714
1715 /* Initialize prio member of layer object */
1716 v4l2_prio_init(&vpbe_display_layer->prio);
1717
1718 return 0;
1719 }
1720
1721 static __devinit int register_device(struct vpbe_layer *vpbe_display_layer,
1722 struct vpbe_display *disp_dev,
1723 struct platform_device *pdev) {
1724 int err;
1725
1726 v4l2_info(&disp_dev->vpbe_dev->v4l2_dev,
1727 "Trying to register VPBE display device.\n");
1728 v4l2_info(&disp_dev->vpbe_dev->v4l2_dev,
1729 "layer=%x,layer->video_dev=%x\n",
1730 (int)vpbe_display_layer,
1731 (int)&vpbe_display_layer->video_dev);
1732
1733 err = video_register_device(&vpbe_display_layer->video_dev,
1734 VFL_TYPE_GRABBER,
1735 -1);
1736 if (err)
1737 return -ENODEV;
1738
1739 vpbe_display_layer->disp_dev = disp_dev;
1740 /* set the driver data in platform device */
1741 platform_set_drvdata(pdev, disp_dev);
1742 video_set_drvdata(&vpbe_display_layer->video_dev,
1743 vpbe_display_layer);
1744
1745 return 0;
1746 }
1747
1748
1749
1750 /*
1751 * vpbe_display_probe()
1752 * This function creates device entries by register itself to the V4L2 driver
1753 * and initializes fields of each layer objects
1754 */
1755 static __devinit int vpbe_display_probe(struct platform_device *pdev)
1756 {
1757 struct vpbe_layer *vpbe_display_layer;
1758 struct vpbe_display *disp_dev;
1759 struct resource *res = NULL;
1760 int k;
1761 int i;
1762 int err;
1763 int irq;
1764
1765 printk(KERN_DEBUG "vpbe_display_probe\n");
1766 /* Allocate memory for vpbe_display */
1767 disp_dev = kzalloc(sizeof(struct vpbe_display), GFP_KERNEL);
1768 if (!disp_dev) {
1769 printk(KERN_ERR "ran out of memory\n");
1770 return -ENOMEM;
1771 }
1772
1773 spin_lock_init(&disp_dev->dma_queue_lock);
1774 /*
1775 * Scan all the platform devices to find the vpbe
1776 * controller device and get the vpbe_dev object
1777 */
1778 err = bus_for_each_dev(&platform_bus_type, NULL, disp_dev,
1779 vpbe_device_get);
1780 if (err < 0)
1781 return err;
1782 /* Initialize the vpbe display controller */
1783 if (NULL != disp_dev->vpbe_dev->ops.initialize) {
1784 err = disp_dev->vpbe_dev->ops.initialize(&pdev->dev,
1785 disp_dev->vpbe_dev);
1786 if (err) {
1787 v4l2_err(&disp_dev->vpbe_dev->v4l2_dev,
1788 "Error initing vpbe\n");
1789 err = -ENOMEM;
1790 goto probe_out;
1791 }
1792 }
1793
1794 for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1795 if (init_vpbe_layer(i, disp_dev, pdev)) {
1796 err = -ENODEV;
1797 goto probe_out;
1798 }
1799 }
1800
1801 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1802 if (!res) {
1803 v4l2_err(&disp_dev->vpbe_dev->v4l2_dev,
1804 "Unable to get VENC interrupt resource\n");
1805 err = -ENODEV;
1806 goto probe_out;
1807 }
1808
1809 irq = res->start;
1810 if (request_irq(irq, venc_isr, IRQF_DISABLED, VPBE_DISPLAY_DRIVER,
1811 disp_dev)) {
1812 v4l2_err(&disp_dev->vpbe_dev->v4l2_dev,
1813 "Unable to request interrupt\n");
1814 err = -ENODEV;
1815 goto probe_out;
1816 }
1817
1818 for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1819 if (register_device(disp_dev->dev[i], disp_dev, pdev)) {
1820 err = -ENODEV;
1821 goto probe_out_irq;
1822 }
1823 }
1824
1825 printk(KERN_DEBUG "Successfully completed the probing of vpbe v4l2 device\n");
1826 return 0;
1827
1828 probe_out_irq:
1829 free_irq(res->start, disp_dev);
1830 probe_out:
1831 for (k = 0; k < VPBE_DISPLAY_MAX_DEVICES; k++) {
1832 /* Get the pointer to the layer object */
1833 vpbe_display_layer = disp_dev->dev[k];
1834 /* Unregister video device */
1835 if (vpbe_display_layer) {
1836 video_unregister_device(
1837 &vpbe_display_layer->video_dev);
1838 kfree(disp_dev->dev[k]);
1839 }
1840 }
1841 kfree(disp_dev);
1842 return err;
1843 }
1844
1845 /*
1846 * vpbe_display_remove()
1847 * It un-register hardware layer from V4L2 driver
1848 */
1849 static int vpbe_display_remove(struct platform_device *pdev)
1850 {
1851 struct vpbe_layer *vpbe_display_layer;
1852 struct vpbe_display *disp_dev = platform_get_drvdata(pdev);
1853 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1854 struct resource *res;
1855 int i;
1856
1857 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_remove\n");
1858
1859 /* unregister irq */
1860 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1861 free_irq(res->start, disp_dev);
1862
1863 /* deinitialize the vpbe display controller */
1864 if (NULL != vpbe_dev->ops.deinitialize)
1865 vpbe_dev->ops.deinitialize(&pdev->dev, vpbe_dev);
1866 /* un-register device */
1867 for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1868 /* Get the pointer to the layer object */
1869 vpbe_display_layer = disp_dev->dev[i];
1870 /* Unregister video device */
1871 video_unregister_device(&vpbe_display_layer->video_dev);
1872
1873 }
1874 for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1875 kfree(disp_dev->dev[i]);
1876 disp_dev->dev[i] = NULL;
1877 }
1878
1879 return 0;
1880 }
1881
1882 static struct platform_driver vpbe_display_driver = {
1883 .driver = {
1884 .name = VPBE_DISPLAY_DRIVER,
1885 .owner = THIS_MODULE,
1886 .bus = &platform_bus_type,
1887 },
1888 .probe = vpbe_display_probe,
1889 .remove = __devexit_p(vpbe_display_remove),
1890 };
1891
1892 module_platform_driver(vpbe_display_driver);
1893
1894 MODULE_DESCRIPTION("TI DM644x/DM355/DM365 VPBE Display controller");
1895 MODULE_LICENSE("GPL");
1896 MODULE_AUTHOR("Texas Instruments");
kernel source for telekom puls (alcatel/mediatek)