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Merge remote-tracking branch 'mmc-uh/next'
[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[], struct device *alloc_devs[])
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
246 if (*nplanes)
247 return sizes[0] < layer->pix_fmt.sizeimage ? -EINVAL : 0;
248
249 *nplanes = 1;
250 sizes[0] = layer->pix_fmt.sizeimage;
251
252 return 0;
253 }
254
255 /*
256 * vpbe_buffer_queue()
257 * This function adds the buffer to DMA queue
258 */
259 static void vpbe_buffer_queue(struct vb2_buffer *vb)
260 {
261 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
262 /* Get the file handle object and layer object */
263 struct vpbe_disp_buffer *buf = container_of(vbuf,
264 struct vpbe_disp_buffer, vb);
265 struct vpbe_layer *layer = vb2_get_drv_priv(vb->vb2_queue);
266 struct vpbe_display *disp = layer->disp_dev;
267 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
268 unsigned long flags;
269
270 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
271 "vpbe_buffer_queue\n");
272
273 /* add the buffer to the DMA queue */
274 spin_lock_irqsave(&disp->dma_queue_lock, flags);
275 list_add_tail(&buf->list, &layer->dma_queue);
276 spin_unlock_irqrestore(&disp->dma_queue_lock, flags);
277 }
278
279 static int vpbe_start_streaming(struct vb2_queue *vq, unsigned int count)
280 {
281 struct vpbe_layer *layer = vb2_get_drv_priv(vq);
282 struct osd_state *osd_device = layer->disp_dev->osd_device;
283 int ret;
284
285 osd_device->ops.disable_layer(osd_device, layer->layer_info.id);
286
287 /* Get the next frame from the buffer queue */
288 layer->next_frm = layer->cur_frm = list_entry(layer->dma_queue.next,
289 struct vpbe_disp_buffer, list);
290 /* Remove buffer from the buffer queue */
291 list_del(&layer->cur_frm->list);
292 /* Mark state of the current frame to active */
293 layer->cur_frm->vb.vb2_buf.state = VB2_BUF_STATE_ACTIVE;
294 /* Initialize field_id and started member */
295 layer->field_id = 0;
296
297 /* Set parameters in OSD and VENC */
298 ret = vpbe_set_osd_display_params(layer->disp_dev, layer);
299 if (ret < 0) {
300 struct vpbe_disp_buffer *buf, *tmp;
301
302 vb2_buffer_done(&layer->cur_frm->vb.vb2_buf,
303 VB2_BUF_STATE_QUEUED);
304 list_for_each_entry_safe(buf, tmp, &layer->dma_queue, list) {
305 list_del(&buf->list);
306 vb2_buffer_done(&buf->vb.vb2_buf,
307 VB2_BUF_STATE_QUEUED);
308 }
309
310 return ret;
311 }
312
313 /*
314 * if request format is yuv420 semiplanar, need to
315 * enable both video windows
316 */
317 layer->layer_first_int = 1;
318
319 return ret;
320 }
321
322 static void vpbe_stop_streaming(struct vb2_queue *vq)
323 {
324 struct vpbe_layer *layer = vb2_get_drv_priv(vq);
325 struct osd_state *osd_device = layer->disp_dev->osd_device;
326 struct vpbe_display *disp = layer->disp_dev;
327 unsigned long flags;
328
329 if (!vb2_is_streaming(vq))
330 return;
331
332 osd_device->ops.disable_layer(osd_device, layer->layer_info.id);
333
334 /* release all active buffers */
335 spin_lock_irqsave(&disp->dma_queue_lock, flags);
336 if (layer->cur_frm == layer->next_frm) {
337 vb2_buffer_done(&layer->cur_frm->vb.vb2_buf,
338 VB2_BUF_STATE_ERROR);
339 } else {
340 if (layer->cur_frm != NULL)
341 vb2_buffer_done(&layer->cur_frm->vb.vb2_buf,
342 VB2_BUF_STATE_ERROR);
343 if (layer->next_frm != NULL)
344 vb2_buffer_done(&layer->next_frm->vb.vb2_buf,
345 VB2_BUF_STATE_ERROR);
346 }
347
348 while (!list_empty(&layer->dma_queue)) {
349 layer->next_frm = list_entry(layer->dma_queue.next,
350 struct vpbe_disp_buffer, list);
351 list_del(&layer->next_frm->list);
352 vb2_buffer_done(&layer->next_frm->vb.vb2_buf,
353 VB2_BUF_STATE_ERROR);
354 }
355 spin_unlock_irqrestore(&disp->dma_queue_lock, flags);
356 }
357
358 static struct vb2_ops video_qops = {
359 .queue_setup = vpbe_buffer_queue_setup,
360 .wait_prepare = vb2_ops_wait_prepare,
361 .wait_finish = vb2_ops_wait_finish,
362 .buf_prepare = vpbe_buffer_prepare,
363 .start_streaming = vpbe_start_streaming,
364 .stop_streaming = vpbe_stop_streaming,
365 .buf_queue = vpbe_buffer_queue,
366 };
367
368 static
369 struct vpbe_layer*
370 _vpbe_display_get_other_win_layer(struct vpbe_display *disp_dev,
371 struct vpbe_layer *layer)
372 {
373 enum vpbe_display_device_id thiswin, otherwin;
374 thiswin = layer->device_id;
375
376 otherwin = (thiswin == VPBE_DISPLAY_DEVICE_0) ?
377 VPBE_DISPLAY_DEVICE_1 : VPBE_DISPLAY_DEVICE_0;
378 return disp_dev->dev[otherwin];
379 }
380
381 static int vpbe_set_osd_display_params(struct vpbe_display *disp_dev,
382 struct vpbe_layer *layer)
383 {
384 struct osd_layer_config *cfg = &layer->layer_info.config;
385 struct osd_state *osd_device = disp_dev->osd_device;
386 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
387 unsigned long addr;
388 int ret;
389
390 addr = vb2_dma_contig_plane_dma_addr(&layer->cur_frm->vb.vb2_buf, 0);
391 /* Set address in the display registers */
392 osd_device->ops.start_layer(osd_device,
393 layer->layer_info.id,
394 addr,
395 disp_dev->cbcr_ofst);
396
397 ret = osd_device->ops.enable_layer(osd_device,
398 layer->layer_info.id, 0);
399 if (ret < 0) {
400 v4l2_err(&vpbe_dev->v4l2_dev,
401 "Error in enabling osd window layer 0\n");
402 return -1;
403 }
404
405 /* Enable the window */
406 layer->layer_info.enable = 1;
407 if (cfg->pixfmt == PIXFMT_NV12) {
408 struct vpbe_layer *otherlayer =
409 _vpbe_display_get_other_win_layer(disp_dev, layer);
410
411 ret = osd_device->ops.enable_layer(osd_device,
412 otherlayer->layer_info.id, 1);
413 if (ret < 0) {
414 v4l2_err(&vpbe_dev->v4l2_dev,
415 "Error in enabling osd window layer 1\n");
416 return -1;
417 }
418 otherlayer->layer_info.enable = 1;
419 }
420 return 0;
421 }
422
423 static void
424 vpbe_disp_calculate_scale_factor(struct vpbe_display *disp_dev,
425 struct vpbe_layer *layer,
426 int expected_xsize, int expected_ysize)
427 {
428 struct display_layer_info *layer_info = &layer->layer_info;
429 struct v4l2_pix_format *pixfmt = &layer->pix_fmt;
430 struct osd_layer_config *cfg = &layer->layer_info.config;
431 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
432 int calculated_xsize;
433 int h_exp = 0;
434 int v_exp = 0;
435 int h_scale;
436 int v_scale;
437
438 v4l2_std_id standard_id = vpbe_dev->current_timings.std_id;
439
440 /*
441 * Application initially set the image format. Current display
442 * size is obtained from the vpbe display controller. expected_xsize
443 * and expected_ysize are set through S_SELECTION ioctl. Based on this,
444 * driver will calculate the scale factors for vertical and
445 * horizontal direction so that the image is displayed scaled
446 * and expanded. Application uses expansion to display the image
447 * in a square pixel. Otherwise it is displayed using displays
448 * pixel aspect ratio.It is expected that application chooses
449 * the crop coordinates for cropped or scaled display. if crop
450 * size is less than the image size, it is displayed cropped or
451 * it is displayed scaled and/or expanded.
452 *
453 * to begin with, set the crop window same as expected. Later we
454 * will override with scaled window size
455 */
456
457 cfg->xsize = pixfmt->width;
458 cfg->ysize = pixfmt->height;
459 layer_info->h_zoom = ZOOM_X1; /* no horizontal zoom */
460 layer_info->v_zoom = ZOOM_X1; /* no horizontal zoom */
461 layer_info->h_exp = H_EXP_OFF; /* no horizontal zoom */
462 layer_info->v_exp = V_EXP_OFF; /* no horizontal zoom */
463
464 if (pixfmt->width < expected_xsize) {
465 h_scale = vpbe_dev->current_timings.xres / pixfmt->width;
466 if (h_scale < 2)
467 h_scale = 1;
468 else if (h_scale >= 4)
469 h_scale = 4;
470 else
471 h_scale = 2;
472 cfg->xsize *= h_scale;
473 if (cfg->xsize < expected_xsize) {
474 if ((standard_id & V4L2_STD_525_60) ||
475 (standard_id & V4L2_STD_625_50)) {
476 calculated_xsize = (cfg->xsize *
477 VPBE_DISPLAY_H_EXP_RATIO_N) /
478 VPBE_DISPLAY_H_EXP_RATIO_D;
479 if (calculated_xsize <= expected_xsize) {
480 h_exp = 1;
481 cfg->xsize = calculated_xsize;
482 }
483 }
484 }
485 if (h_scale == 2)
486 layer_info->h_zoom = ZOOM_X2;
487 else if (h_scale == 4)
488 layer_info->h_zoom = ZOOM_X4;
489 if (h_exp)
490 layer_info->h_exp = H_EXP_9_OVER_8;
491 } else {
492 /* no scaling, only cropping. Set display area to crop area */
493 cfg->xsize = expected_xsize;
494 }
495
496 if (pixfmt->height < expected_ysize) {
497 v_scale = expected_ysize / pixfmt->height;
498 if (v_scale < 2)
499 v_scale = 1;
500 else if (v_scale >= 4)
501 v_scale = 4;
502 else
503 v_scale = 2;
504 cfg->ysize *= v_scale;
505 if (cfg->ysize < expected_ysize) {
506 if ((standard_id & V4L2_STD_625_50)) {
507 calculated_xsize = (cfg->ysize *
508 VPBE_DISPLAY_V_EXP_RATIO_N) /
509 VPBE_DISPLAY_V_EXP_RATIO_D;
510 if (calculated_xsize <= expected_ysize) {
511 v_exp = 1;
512 cfg->ysize = calculated_xsize;
513 }
514 }
515 }
516 if (v_scale == 2)
517 layer_info->v_zoom = ZOOM_X2;
518 else if (v_scale == 4)
519 layer_info->v_zoom = ZOOM_X4;
520 if (v_exp)
521 layer_info->h_exp = V_EXP_6_OVER_5;
522 } else {
523 /* no scaling, only cropping. Set display area to crop area */
524 cfg->ysize = expected_ysize;
525 }
526 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
527 "crop display xsize = %d, ysize = %d\n",
528 cfg->xsize, cfg->ysize);
529 }
530
531 static void vpbe_disp_adj_position(struct vpbe_display *disp_dev,
532 struct vpbe_layer *layer,
533 int top, int left)
534 {
535 struct osd_layer_config *cfg = &layer->layer_info.config;
536 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
537
538 cfg->xpos = min((unsigned int)left,
539 vpbe_dev->current_timings.xres - cfg->xsize);
540 cfg->ypos = min((unsigned int)top,
541 vpbe_dev->current_timings.yres - cfg->ysize);
542
543 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
544 "new xpos = %d, ypos = %d\n",
545 cfg->xpos, cfg->ypos);
546 }
547
548 static void vpbe_disp_check_window_params(struct vpbe_display *disp_dev,
549 struct v4l2_rect *c)
550 {
551 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
552
553 if ((c->width == 0) ||
554 ((c->width + c->left) > vpbe_dev->current_timings.xres))
555 c->width = vpbe_dev->current_timings.xres - c->left;
556
557 if ((c->height == 0) || ((c->height + c->top) >
558 vpbe_dev->current_timings.yres))
559 c->height = vpbe_dev->current_timings.yres - c->top;
560
561 /* window height must be even for interlaced display */
562 if (vpbe_dev->current_timings.interlaced)
563 c->height &= (~0x01);
564
565 }
566
567 /**
568 * vpbe_try_format()
569 * If user application provides width and height, and have bytesperline set
570 * to zero, driver calculates bytesperline and sizeimage based on hardware
571 * limits.
572 */
573 static int vpbe_try_format(struct vpbe_display *disp_dev,
574 struct v4l2_pix_format *pixfmt, int check)
575 {
576 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
577 int min_height = 1;
578 int min_width = 32;
579 int max_height;
580 int max_width;
581 int bpp;
582
583 if ((pixfmt->pixelformat != V4L2_PIX_FMT_UYVY) &&
584 (pixfmt->pixelformat != V4L2_PIX_FMT_NV12))
585 /* choose default as V4L2_PIX_FMT_UYVY */
586 pixfmt->pixelformat = V4L2_PIX_FMT_UYVY;
587
588 /* Check the field format */
589 if ((pixfmt->field != V4L2_FIELD_INTERLACED) &&
590 (pixfmt->field != V4L2_FIELD_NONE)) {
591 if (vpbe_dev->current_timings.interlaced)
592 pixfmt->field = V4L2_FIELD_INTERLACED;
593 else
594 pixfmt->field = V4L2_FIELD_NONE;
595 }
596
597 if (pixfmt->field == V4L2_FIELD_INTERLACED)
598 min_height = 2;
599
600 if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
601 bpp = 1;
602 else
603 bpp = 2;
604
605 max_width = vpbe_dev->current_timings.xres;
606 max_height = vpbe_dev->current_timings.yres;
607
608 min_width /= bpp;
609
610 if (!pixfmt->width || (pixfmt->width < min_width) ||
611 (pixfmt->width > max_width)) {
612 pixfmt->width = vpbe_dev->current_timings.xres;
613 }
614
615 if (!pixfmt->height || (pixfmt->height < min_height) ||
616 (pixfmt->height > max_height)) {
617 pixfmt->height = vpbe_dev->current_timings.yres;
618 }
619
620 if (pixfmt->bytesperline < (pixfmt->width * bpp))
621 pixfmt->bytesperline = pixfmt->width * bpp;
622
623 /* Make the bytesperline 32 byte aligned */
624 pixfmt->bytesperline = ((pixfmt->width * bpp + 31) & ~31);
625
626 if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
627 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height +
628 (pixfmt->bytesperline * pixfmt->height >> 1);
629 else
630 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
631
632 return 0;
633 }
634
635 static int vpbe_display_querycap(struct file *file, void *priv,
636 struct v4l2_capability *cap)
637 {
638 struct vpbe_layer *layer = video_drvdata(file);
639 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
640
641 cap->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
642 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
643 snprintf(cap->driver, sizeof(cap->driver), "%s",
644 dev_name(vpbe_dev->pdev));
645 snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
646 dev_name(vpbe_dev->pdev));
647 strlcpy(cap->card, vpbe_dev->cfg->module_name, sizeof(cap->card));
648
649 return 0;
650 }
651
652 static int vpbe_display_s_selection(struct file *file, void *priv,
653 struct v4l2_selection *sel)
654 {
655 struct vpbe_layer *layer = video_drvdata(file);
656 struct vpbe_display *disp_dev = layer->disp_dev;
657 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
658 struct osd_layer_config *cfg = &layer->layer_info.config;
659 struct osd_state *osd_device = disp_dev->osd_device;
660 struct v4l2_rect rect = sel->r;
661 int ret;
662
663 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
664 "VIDIOC_S_SELECTION, layer id = %d\n", layer->device_id);
665
666 if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT ||
667 sel->target != V4L2_SEL_TGT_CROP)
668 return -EINVAL;
669
670 if (rect.top < 0)
671 rect.top = 0;
672 if (rect.left < 0)
673 rect.left = 0;
674
675 vpbe_disp_check_window_params(disp_dev, &rect);
676
677 osd_device->ops.get_layer_config(osd_device,
678 layer->layer_info.id, cfg);
679
680 vpbe_disp_calculate_scale_factor(disp_dev, layer,
681 rect.width,
682 rect.height);
683 vpbe_disp_adj_position(disp_dev, layer, rect.top,
684 rect.left);
685 ret = osd_device->ops.set_layer_config(osd_device,
686 layer->layer_info.id, cfg);
687 if (ret < 0) {
688 v4l2_err(&vpbe_dev->v4l2_dev,
689 "Error in set layer config:\n");
690 return -EINVAL;
691 }
692
693 /* apply zooming and h or v expansion */
694 osd_device->ops.set_zoom(osd_device,
695 layer->layer_info.id,
696 layer->layer_info.h_zoom,
697 layer->layer_info.v_zoom);
698 ret = osd_device->ops.set_vid_expansion(osd_device,
699 layer->layer_info.h_exp,
700 layer->layer_info.v_exp);
701 if (ret < 0) {
702 v4l2_err(&vpbe_dev->v4l2_dev,
703 "Error in set vid expansion:\n");
704 return -EINVAL;
705 }
706
707 if ((layer->layer_info.h_zoom != ZOOM_X1) ||
708 (layer->layer_info.v_zoom != ZOOM_X1) ||
709 (layer->layer_info.h_exp != H_EXP_OFF) ||
710 (layer->layer_info.v_exp != V_EXP_OFF))
711 /* Enable expansion filter */
712 osd_device->ops.set_interpolation_filter(osd_device, 1);
713 else
714 osd_device->ops.set_interpolation_filter(osd_device, 0);
715
716 sel->r = rect;
717 return 0;
718 }
719
720 static int vpbe_display_g_selection(struct file *file, void *priv,
721 struct v4l2_selection *sel)
722 {
723 struct vpbe_layer *layer = video_drvdata(file);
724 struct osd_layer_config *cfg = &layer->layer_info.config;
725 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
726 struct osd_state *osd_device = layer->disp_dev->osd_device;
727 struct v4l2_rect *rect = &sel->r;
728
729 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
730 "VIDIOC_G_SELECTION, layer id = %d\n",
731 layer->device_id);
732
733 if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
734 return -EINVAL;
735
736 switch (sel->target) {
737 case V4L2_SEL_TGT_CROP:
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 break;
745 case V4L2_SEL_TGT_CROP_DEFAULT:
746 case V4L2_SEL_TGT_CROP_BOUNDS:
747 rect->left = 0;
748 rect->top = 0;
749 rect->width = vpbe_dev->current_timings.xres;
750 rect->height = vpbe_dev->current_timings.yres;
751 break;
752 default:
753 return -EINVAL;
754 }
755
756 return 0;
757 }
758
759 static int vpbe_display_cropcap(struct file *file, void *priv,
760 struct v4l2_cropcap *cropcap)
761 {
762 struct vpbe_layer *layer = video_drvdata(file);
763 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
764
765 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_CROPCAP ioctl\n");
766
767 if (cropcap->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
768 return -EINVAL;
769
770 cropcap->pixelaspect = vpbe_dev->current_timings.aspect;
771 return 0;
772 }
773
774 static int vpbe_display_g_fmt(struct file *file, void *priv,
775 struct v4l2_format *fmt)
776 {
777 struct vpbe_layer *layer = video_drvdata(file);
778 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
779
780 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
781 "VIDIOC_G_FMT, layer id = %d\n",
782 layer->device_id);
783
784 /* If buffer type is video output */
785 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
786 v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
787 return -EINVAL;
788 }
789 /* Fill in the information about format */
790 fmt->fmt.pix = layer->pix_fmt;
791
792 return 0;
793 }
794
795 static int vpbe_display_enum_fmt(struct file *file, void *priv,
796 struct v4l2_fmtdesc *fmt)
797 {
798 struct vpbe_layer *layer = video_drvdata(file);
799 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
800 unsigned int index = 0;
801
802 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
803 "VIDIOC_ENUM_FMT, layer id = %d\n",
804 layer->device_id);
805 if (fmt->index > 1) {
806 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid format index\n");
807 return -EINVAL;
808 }
809
810 /* Fill in the information about format */
811 index = fmt->index;
812 memset(fmt, 0, sizeof(*fmt));
813 fmt->index = index;
814 fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
815 if (index == 0) {
816 strcpy(fmt->description, "YUV 4:2:2 - UYVY");
817 fmt->pixelformat = V4L2_PIX_FMT_UYVY;
818 } else {
819 strcpy(fmt->description, "Y/CbCr 4:2:0");
820 fmt->pixelformat = V4L2_PIX_FMT_NV12;
821 }
822
823 return 0;
824 }
825
826 static int vpbe_display_s_fmt(struct file *file, void *priv,
827 struct v4l2_format *fmt)
828 {
829 struct vpbe_layer *layer = video_drvdata(file);
830 struct vpbe_display *disp_dev = layer->disp_dev;
831 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
832 struct osd_layer_config *cfg = &layer->layer_info.config;
833 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
834 struct osd_state *osd_device = disp_dev->osd_device;
835 int ret;
836
837 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
838 "VIDIOC_S_FMT, layer id = %d\n",
839 layer->device_id);
840
841 if (vb2_is_busy(&layer->buffer_queue))
842 return -EBUSY;
843
844 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
845 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "invalid type\n");
846 return -EINVAL;
847 }
848 /* Check for valid pixel format */
849 ret = vpbe_try_format(disp_dev, pixfmt, 1);
850 if (ret)
851 return ret;
852
853 /* YUV420 is requested, check availability of the
854 other video window */
855
856 layer->pix_fmt = *pixfmt;
857 if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12) {
858 struct vpbe_layer *otherlayer;
859
860 otherlayer = _vpbe_display_get_other_win_layer(disp_dev, layer);
861 /* if other layer is available, only
862 * claim it, do not configure it
863 */
864 ret = osd_device->ops.request_layer(osd_device,
865 otherlayer->layer_info.id);
866 if (ret < 0) {
867 v4l2_err(&vpbe_dev->v4l2_dev,
868 "Display Manager failed to allocate layer\n");
869 return -EBUSY;
870 }
871 }
872
873 /* Get osd layer config */
874 osd_device->ops.get_layer_config(osd_device,
875 layer->layer_info.id, cfg);
876 /* Store the pixel format in the layer object */
877 cfg->xsize = pixfmt->width;
878 cfg->ysize = pixfmt->height;
879 cfg->line_length = pixfmt->bytesperline;
880 cfg->ypos = 0;
881 cfg->xpos = 0;
882 cfg->interlaced = vpbe_dev->current_timings.interlaced;
883
884 if (V4L2_PIX_FMT_UYVY == pixfmt->pixelformat)
885 cfg->pixfmt = PIXFMT_YCBCRI;
886
887 /* Change of the default pixel format for both video windows */
888 if (V4L2_PIX_FMT_NV12 == pixfmt->pixelformat) {
889 struct vpbe_layer *otherlayer;
890 cfg->pixfmt = PIXFMT_NV12;
891 otherlayer = _vpbe_display_get_other_win_layer(disp_dev,
892 layer);
893 otherlayer->layer_info.config.pixfmt = PIXFMT_NV12;
894 }
895
896 /* Set the layer config in the osd window */
897 ret = osd_device->ops.set_layer_config(osd_device,
898 layer->layer_info.id, cfg);
899 if (ret < 0) {
900 v4l2_err(&vpbe_dev->v4l2_dev,
901 "Error in S_FMT params:\n");
902 return -EINVAL;
903 }
904
905 /* Readback and fill the local copy of current pix format */
906 osd_device->ops.get_layer_config(osd_device,
907 layer->layer_info.id, cfg);
908
909 return 0;
910 }
911
912 static int vpbe_display_try_fmt(struct file *file, void *priv,
913 struct v4l2_format *fmt)
914 {
915 struct vpbe_layer *layer = video_drvdata(file);
916 struct vpbe_display *disp_dev = layer->disp_dev;
917 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
918 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
919
920 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_TRY_FMT\n");
921
922 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
923 v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
924 return -EINVAL;
925 }
926
927 /* Check for valid field format */
928 return vpbe_try_format(disp_dev, pixfmt, 0);
929
930 }
931
932 /**
933 * vpbe_display_s_std - Set the given standard in the encoder
934 *
935 * Sets the standard if supported by the current encoder. Return the status.
936 * 0 - success & -EINVAL on error
937 */
938 static int vpbe_display_s_std(struct file *file, void *priv,
939 v4l2_std_id std_id)
940 {
941 struct vpbe_layer *layer = video_drvdata(file);
942 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
943 int ret;
944
945 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_STD\n");
946
947 if (vb2_is_busy(&layer->buffer_queue))
948 return -EBUSY;
949
950 if (NULL != vpbe_dev->ops.s_std) {
951 ret = vpbe_dev->ops.s_std(vpbe_dev, std_id);
952 if (ret) {
953 v4l2_err(&vpbe_dev->v4l2_dev,
954 "Failed to set standard for sub devices\n");
955 return -EINVAL;
956 }
957 } else {
958 return -EINVAL;
959 }
960
961 return 0;
962 }
963
964 /**
965 * vpbe_display_g_std - Get the standard in the current encoder
966 *
967 * Get the standard in the current encoder. Return the status. 0 - success
968 * -EINVAL on error
969 */
970 static int vpbe_display_g_std(struct file *file, void *priv,
971 v4l2_std_id *std_id)
972 {
973 struct vpbe_layer *layer = video_drvdata(file);
974 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
975
976 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_STD\n");
977
978 /* Get the standard from the current encoder */
979 if (vpbe_dev->current_timings.timings_type & VPBE_ENC_STD) {
980 *std_id = vpbe_dev->current_timings.std_id;
981 return 0;
982 }
983
984 return -EINVAL;
985 }
986
987 /**
988 * vpbe_display_enum_output - enumerate outputs
989 *
990 * Enumerates the outputs available at the vpbe display
991 * returns the status, -EINVAL if end of output list
992 */
993 static int vpbe_display_enum_output(struct file *file, void *priv,
994 struct v4l2_output *output)
995 {
996 struct vpbe_layer *layer = video_drvdata(file);
997 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
998 int ret;
999
1000 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_OUTPUT\n");
1001
1002 /* Enumerate outputs */
1003
1004 if (NULL == vpbe_dev->ops.enum_outputs)
1005 return -EINVAL;
1006
1007 ret = vpbe_dev->ops.enum_outputs(vpbe_dev, output);
1008 if (ret) {
1009 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1010 "Failed to enumerate outputs\n");
1011 return -EINVAL;
1012 }
1013
1014 return 0;
1015 }
1016
1017 /**
1018 * vpbe_display_s_output - Set output to
1019 * the output specified by the index
1020 */
1021 static int vpbe_display_s_output(struct file *file, void *priv,
1022 unsigned int i)
1023 {
1024 struct vpbe_layer *layer = video_drvdata(file);
1025 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1026 int ret;
1027
1028 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_OUTPUT\n");
1029
1030 if (vb2_is_busy(&layer->buffer_queue))
1031 return -EBUSY;
1032
1033 if (NULL == vpbe_dev->ops.set_output)
1034 return -EINVAL;
1035
1036 ret = vpbe_dev->ops.set_output(vpbe_dev, i);
1037 if (ret) {
1038 v4l2_err(&vpbe_dev->v4l2_dev,
1039 "Failed to set output for sub devices\n");
1040 return -EINVAL;
1041 }
1042
1043 return 0;
1044 }
1045
1046 /**
1047 * vpbe_display_g_output - Get output from subdevice
1048 * for a given by the index
1049 */
1050 static int vpbe_display_g_output(struct file *file, void *priv,
1051 unsigned int *i)
1052 {
1053 struct vpbe_layer *layer = video_drvdata(file);
1054 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1055
1056 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_OUTPUT\n");
1057 /* Get the standard from the current encoder */
1058 *i = vpbe_dev->current_out_index;
1059
1060 return 0;
1061 }
1062
1063 /**
1064 * vpbe_display_enum_dv_timings - Enumerate the dv timings
1065 *
1066 * enum the timings in the current encoder. Return the status. 0 - success
1067 * -EINVAL on error
1068 */
1069 static int
1070 vpbe_display_enum_dv_timings(struct file *file, void *priv,
1071 struct v4l2_enum_dv_timings *timings)
1072 {
1073 struct vpbe_layer *layer = video_drvdata(file);
1074 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1075 int ret;
1076
1077 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_DV_TIMINGS\n");
1078
1079 /* Enumerate outputs */
1080 if (NULL == vpbe_dev->ops.enum_dv_timings)
1081 return -EINVAL;
1082
1083 ret = vpbe_dev->ops.enum_dv_timings(vpbe_dev, timings);
1084 if (ret) {
1085 v4l2_err(&vpbe_dev->v4l2_dev,
1086 "Failed to enumerate dv timings info\n");
1087 return -EINVAL;
1088 }
1089
1090 return 0;
1091 }
1092
1093 /**
1094 * vpbe_display_s_dv_timings - Set the dv timings
1095 *
1096 * Set the timings in the current encoder. Return the status. 0 - success
1097 * -EINVAL on error
1098 */
1099 static int
1100 vpbe_display_s_dv_timings(struct file *file, void *priv,
1101 struct v4l2_dv_timings *timings)
1102 {
1103 struct vpbe_layer *layer = video_drvdata(file);
1104 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1105 int ret;
1106
1107 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_DV_TIMINGS\n");
1108
1109 if (vb2_is_busy(&layer->buffer_queue))
1110 return -EBUSY;
1111
1112 /* Set the given standard in the encoder */
1113 if (!vpbe_dev->ops.s_dv_timings)
1114 return -EINVAL;
1115
1116 ret = vpbe_dev->ops.s_dv_timings(vpbe_dev, timings);
1117 if (ret) {
1118 v4l2_err(&vpbe_dev->v4l2_dev,
1119 "Failed to set the dv timings info\n");
1120 return -EINVAL;
1121 }
1122
1123 return 0;
1124 }
1125
1126 /**
1127 * vpbe_display_g_dv_timings - Set the dv timings
1128 *
1129 * Get the timings in the current encoder. Return the status. 0 - success
1130 * -EINVAL on error
1131 */
1132 static int
1133 vpbe_display_g_dv_timings(struct file *file, void *priv,
1134 struct v4l2_dv_timings *dv_timings)
1135 {
1136 struct vpbe_layer *layer = video_drvdata(file);
1137 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1138
1139 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_DV_TIMINGS\n");
1140
1141 /* Get the given standard in the encoder */
1142
1143 if (vpbe_dev->current_timings.timings_type &
1144 VPBE_ENC_DV_TIMINGS) {
1145 *dv_timings = vpbe_dev->current_timings.dv_timings;
1146 } else {
1147 return -EINVAL;
1148 }
1149
1150 return 0;
1151 }
1152
1153 /*
1154 * vpbe_display_open()
1155 * It creates object of file handle structure and stores it in private_data
1156 * member of filepointer
1157 */
1158 static int vpbe_display_open(struct file *file)
1159 {
1160 struct vpbe_layer *layer = video_drvdata(file);
1161 struct vpbe_display *disp_dev = layer->disp_dev;
1162 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1163 struct osd_state *osd_device = disp_dev->osd_device;
1164 int err;
1165
1166 /* creating context for file descriptor */
1167 err = v4l2_fh_open(file);
1168 if (err) {
1169 v4l2_err(&vpbe_dev->v4l2_dev, "v4l2_fh_open failed\n");
1170 return err;
1171 }
1172
1173 /* leaving if layer is already initialized */
1174 if (!v4l2_fh_is_singular_file(file))
1175 return err;
1176
1177 if (!layer->usrs) {
1178 if (mutex_lock_interruptible(&layer->opslock))
1179 return -ERESTARTSYS;
1180 /* First claim the layer for this device */
1181 err = osd_device->ops.request_layer(osd_device,
1182 layer->layer_info.id);
1183 mutex_unlock(&layer->opslock);
1184 if (err < 0) {
1185 /* Couldn't get layer */
1186 v4l2_err(&vpbe_dev->v4l2_dev,
1187 "Display Manager failed to allocate layer\n");
1188 v4l2_fh_release(file);
1189 return -EINVAL;
1190 }
1191 }
1192 /* Increment layer usrs counter */
1193 layer->usrs++;
1194 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1195 "vpbe display device opened successfully\n");
1196 return 0;
1197 }
1198
1199 /*
1200 * vpbe_display_release()
1201 * This function deletes buffer queue, frees the buffers and the davinci
1202 * display file * handle
1203 */
1204 static int vpbe_display_release(struct file *file)
1205 {
1206 struct vpbe_layer *layer = video_drvdata(file);
1207 struct osd_layer_config *cfg = &layer->layer_info.config;
1208 struct vpbe_display *disp_dev = layer->disp_dev;
1209 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1210 struct osd_state *osd_device = disp_dev->osd_device;
1211
1212 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_release\n");
1213
1214 mutex_lock(&layer->opslock);
1215
1216 osd_device->ops.disable_layer(osd_device,
1217 layer->layer_info.id);
1218 /* Decrement layer usrs counter */
1219 layer->usrs--;
1220 /* If this file handle has initialize encoder device, reset it */
1221 if (!layer->usrs) {
1222 if (cfg->pixfmt == PIXFMT_NV12) {
1223 struct vpbe_layer *otherlayer;
1224 otherlayer =
1225 _vpbe_display_get_other_win_layer(disp_dev, layer);
1226 osd_device->ops.disable_layer(osd_device,
1227 otherlayer->layer_info.id);
1228 osd_device->ops.release_layer(osd_device,
1229 otherlayer->layer_info.id);
1230 }
1231 osd_device->ops.disable_layer(osd_device,
1232 layer->layer_info.id);
1233 osd_device->ops.release_layer(osd_device,
1234 layer->layer_info.id);
1235 }
1236
1237 _vb2_fop_release(file, NULL);
1238 mutex_unlock(&layer->opslock);
1239
1240 disp_dev->cbcr_ofst = 0;
1241
1242 return 0;
1243 }
1244
1245 /* vpbe capture ioctl operations */
1246 static const struct v4l2_ioctl_ops vpbe_ioctl_ops = {
1247 .vidioc_querycap = vpbe_display_querycap,
1248 .vidioc_g_fmt_vid_out = vpbe_display_g_fmt,
1249 .vidioc_enum_fmt_vid_out = vpbe_display_enum_fmt,
1250 .vidioc_s_fmt_vid_out = vpbe_display_s_fmt,
1251 .vidioc_try_fmt_vid_out = vpbe_display_try_fmt,
1252
1253 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1254 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1255 .vidioc_querybuf = vb2_ioctl_querybuf,
1256 .vidioc_qbuf = vb2_ioctl_qbuf,
1257 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1258 .vidioc_streamon = vb2_ioctl_streamon,
1259 .vidioc_streamoff = vb2_ioctl_streamoff,
1260 .vidioc_expbuf = vb2_ioctl_expbuf,
1261
1262 .vidioc_cropcap = vpbe_display_cropcap,
1263 .vidioc_g_selection = vpbe_display_g_selection,
1264 .vidioc_s_selection = vpbe_display_s_selection,
1265
1266 .vidioc_s_std = vpbe_display_s_std,
1267 .vidioc_g_std = vpbe_display_g_std,
1268
1269 .vidioc_enum_output = vpbe_display_enum_output,
1270 .vidioc_s_output = vpbe_display_s_output,
1271 .vidioc_g_output = vpbe_display_g_output,
1272
1273 .vidioc_s_dv_timings = vpbe_display_s_dv_timings,
1274 .vidioc_g_dv_timings = vpbe_display_g_dv_timings,
1275 .vidioc_enum_dv_timings = vpbe_display_enum_dv_timings,
1276 };
1277
1278 static struct v4l2_file_operations vpbe_fops = {
1279 .owner = THIS_MODULE,
1280 .open = vpbe_display_open,
1281 .release = vpbe_display_release,
1282 .unlocked_ioctl = video_ioctl2,
1283 .mmap = vb2_fop_mmap,
1284 .poll = vb2_fop_poll,
1285 };
1286
1287 static int vpbe_device_get(struct device *dev, void *data)
1288 {
1289 struct platform_device *pdev = to_platform_device(dev);
1290 struct vpbe_display *vpbe_disp = data;
1291
1292 if (strcmp("vpbe_controller", pdev->name) == 0)
1293 vpbe_disp->vpbe_dev = platform_get_drvdata(pdev);
1294
1295 if (strstr(pdev->name, "vpbe-osd") != NULL)
1296 vpbe_disp->osd_device = platform_get_drvdata(pdev);
1297
1298 return 0;
1299 }
1300
1301 static int init_vpbe_layer(int i, struct vpbe_display *disp_dev,
1302 struct platform_device *pdev)
1303 {
1304 struct vpbe_layer *vpbe_display_layer = NULL;
1305 struct video_device *vbd = NULL;
1306
1307 /* Allocate memory for four plane display objects */
1308
1309 disp_dev->dev[i] =
1310 kzalloc(sizeof(struct vpbe_layer), GFP_KERNEL);
1311
1312 /* If memory allocation fails, return error */
1313 if (!disp_dev->dev[i]) {
1314 printk(KERN_ERR "ran out of memory\n");
1315 return -ENOMEM;
1316 }
1317 spin_lock_init(&disp_dev->dev[i]->irqlock);
1318 mutex_init(&disp_dev->dev[i]->opslock);
1319
1320 /* Get the pointer to the layer object */
1321 vpbe_display_layer = disp_dev->dev[i];
1322 vbd = &vpbe_display_layer->video_dev;
1323 /* Initialize field of video device */
1324 vbd->release = video_device_release_empty;
1325 vbd->fops = &vpbe_fops;
1326 vbd->ioctl_ops = &vpbe_ioctl_ops;
1327 vbd->minor = -1;
1328 vbd->v4l2_dev = &disp_dev->vpbe_dev->v4l2_dev;
1329 vbd->lock = &vpbe_display_layer->opslock;
1330 vbd->vfl_dir = VFL_DIR_TX;
1331
1332 if (disp_dev->vpbe_dev->current_timings.timings_type &
1333 VPBE_ENC_STD)
1334 vbd->tvnorms = (V4L2_STD_525_60 | V4L2_STD_625_50);
1335
1336 snprintf(vbd->name, sizeof(vbd->name),
1337 "DaVinci_VPBE Display_DRIVER_V%d.%d.%d",
1338 (VPBE_DISPLAY_VERSION_CODE >> 16) & 0xff,
1339 (VPBE_DISPLAY_VERSION_CODE >> 8) & 0xff,
1340 (VPBE_DISPLAY_VERSION_CODE) & 0xff);
1341
1342 vpbe_display_layer->device_id = i;
1343
1344 vpbe_display_layer->layer_info.id =
1345 ((i == VPBE_DISPLAY_DEVICE_0) ? WIN_VID0 : WIN_VID1);
1346
1347
1348 return 0;
1349 }
1350
1351 static int register_device(struct vpbe_layer *vpbe_display_layer,
1352 struct vpbe_display *disp_dev,
1353 struct platform_device *pdev)
1354 {
1355 int err;
1356
1357 v4l2_info(&disp_dev->vpbe_dev->v4l2_dev,
1358 "Trying to register VPBE display device.\n");
1359 v4l2_info(&disp_dev->vpbe_dev->v4l2_dev,
1360 "layer=%x,layer->video_dev=%x\n",
1361 (int)vpbe_display_layer,
1362 (int)&vpbe_display_layer->video_dev);
1363
1364 vpbe_display_layer->video_dev.queue = &vpbe_display_layer->buffer_queue;
1365 err = video_register_device(&vpbe_display_layer->video_dev,
1366 VFL_TYPE_GRABBER,
1367 -1);
1368 if (err)
1369 return -ENODEV;
1370
1371 vpbe_display_layer->disp_dev = disp_dev;
1372 /* set the driver data in platform device */
1373 platform_set_drvdata(pdev, disp_dev);
1374 video_set_drvdata(&vpbe_display_layer->video_dev,
1375 vpbe_display_layer);
1376
1377 return 0;
1378 }
1379
1380
1381
1382 /*
1383 * vpbe_display_probe()
1384 * This function creates device entries by register itself to the V4L2 driver
1385 * and initializes fields of each layer objects
1386 */
1387 static int vpbe_display_probe(struct platform_device *pdev)
1388 {
1389 struct vpbe_display *disp_dev;
1390 struct v4l2_device *v4l2_dev;
1391 struct resource *res = NULL;
1392 struct vb2_queue *q;
1393 int k;
1394 int i;
1395 int err;
1396 int irq;
1397
1398 printk(KERN_DEBUG "vpbe_display_probe\n");
1399 /* Allocate memory for vpbe_display */
1400 disp_dev = devm_kzalloc(&pdev->dev, sizeof(struct vpbe_display),
1401 GFP_KERNEL);
1402 if (!disp_dev)
1403 return -ENOMEM;
1404
1405 spin_lock_init(&disp_dev->dma_queue_lock);
1406 /*
1407 * Scan all the platform devices to find the vpbe
1408 * controller device and get the vpbe_dev object
1409 */
1410 err = bus_for_each_dev(&platform_bus_type, NULL, disp_dev,
1411 vpbe_device_get);
1412 if (err < 0)
1413 return err;
1414
1415 v4l2_dev = &disp_dev->vpbe_dev->v4l2_dev;
1416 /* Initialize the vpbe display controller */
1417 if (NULL != disp_dev->vpbe_dev->ops.initialize) {
1418 err = disp_dev->vpbe_dev->ops.initialize(&pdev->dev,
1419 disp_dev->vpbe_dev);
1420 if (err) {
1421 v4l2_err(v4l2_dev, "Error initing vpbe\n");
1422 err = -ENOMEM;
1423 goto probe_out;
1424 }
1425 }
1426
1427 for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1428 if (init_vpbe_layer(i, disp_dev, pdev)) {
1429 err = -ENODEV;
1430 goto probe_out;
1431 }
1432 }
1433
1434 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1435 if (!res) {
1436 v4l2_err(v4l2_dev, "Unable to get VENC interrupt resource\n");
1437 err = -ENODEV;
1438 goto probe_out;
1439 }
1440
1441 irq = res->start;
1442 err = devm_request_irq(&pdev->dev, irq, venc_isr, 0,
1443 VPBE_DISPLAY_DRIVER, disp_dev);
1444 if (err) {
1445 v4l2_err(v4l2_dev, "VPBE IRQ request failed\n");
1446 goto probe_out;
1447 }
1448
1449 for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1450 /* initialize vb2 queue */
1451 q = &disp_dev->dev[i]->buffer_queue;
1452 memset(q, 0, sizeof(*q));
1453 q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1454 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1455 q->drv_priv = disp_dev->dev[i];
1456 q->ops = &video_qops;
1457 q->mem_ops = &vb2_dma_contig_memops;
1458 q->buf_struct_size = sizeof(struct vpbe_disp_buffer);
1459 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1460 q->min_buffers_needed = 1;
1461 q->lock = &disp_dev->dev[i]->opslock;
1462 q->dev = disp_dev->vpbe_dev->pdev;
1463 err = vb2_queue_init(q);
1464 if (err) {
1465 v4l2_err(v4l2_dev, "vb2_queue_init() failed\n");
1466 goto probe_out;
1467 }
1468
1469 INIT_LIST_HEAD(&disp_dev->dev[i]->dma_queue);
1470
1471 if (register_device(disp_dev->dev[i], disp_dev, pdev)) {
1472 err = -ENODEV;
1473 goto probe_out;
1474 }
1475 }
1476
1477 v4l2_dbg(1, debug, v4l2_dev,
1478 "Successfully completed the probing of vpbe v4l2 device\n");
1479
1480 return 0;
1481
1482 probe_out:
1483 for (k = 0; k < VPBE_DISPLAY_MAX_DEVICES; k++) {
1484 /* Unregister video device */
1485 if (disp_dev->dev[k] != NULL) {
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 /* Unregister video device */
1514 video_unregister_device(&vpbe_display_layer->video_dev);
1515
1516 }
1517 for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1518 kfree(disp_dev->dev[i]);
1519 disp_dev->dev[i] = NULL;
1520 }
1521
1522 return 0;
1523 }
1524
1525 static struct platform_driver vpbe_display_driver = {
1526 .driver = {
1527 .name = VPBE_DISPLAY_DRIVER,
1528 .bus = &platform_bus_type,
1529 },
1530 .probe = vpbe_display_probe,
1531 .remove = vpbe_display_remove,
1532 };
1533
1534 module_platform_driver(vpbe_display_driver);
1535
1536 MODULE_DESCRIPTION("TI DM644x/DM355/DM365 VPBE Display controller");
1537 MODULE_LICENSE("GPL");
1538 MODULE_AUTHOR("Texas Instruments");
Linux kernel - Deliverables
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