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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / media / platform / davinci / vpbe_display.c
blobae419958e4204d2749f090c4140ed2a265bb0e95
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
4 */
5 #include <linux/kernel.h>
6 #include <linux/init.h>
7 #include <linux/module.h>
8 #include <linux/errno.h>
9 #include <linux/interrupt.h>
10 #include <linux/string.h>
11 #include <linux/wait.h>
12 #include <linux/time.h>
13 #include <linux/platform_device.h>
14 #include <linux/irq.h>
15 #include <linux/mm.h>
16 #include <linux/mutex.h>
17 #include <linux/videodev2.h>
18 #include <linux/slab.h>
19
20 #include <asm/pgtable.h>
21
22 #include <media/v4l2-dev.h>
23 #include <media/v4l2-common.h>
24 #include <media/v4l2-ioctl.h>
25 #include <media/v4l2-device.h>
26 #include <media/davinci/vpbe_display.h>
27 #include <media/davinci/vpbe_types.h>
28 #include <media/davinci/vpbe.h>
29 #include <media/davinci/vpbe_venc.h>
30 #include <media/davinci/vpbe_osd.h>
31 #include "vpbe_venc_regs.h"
32
33 #define VPBE_DISPLAY_DRIVER "vpbe-v4l2"
34
35 static int debug;
36
37 #define VPBE_DEFAULT_NUM_BUFS 3
38
39 module_param(debug, int, 0644);
40
41 static int vpbe_set_osd_display_params(struct vpbe_display *disp_dev,
42 struct vpbe_layer *layer);
43
44 static int venc_is_second_field(struct vpbe_display *disp_dev)
45 {
46 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
47 int ret, val;
48
49 ret = v4l2_subdev_call(vpbe_dev->venc,
50 core,
51 ioctl,
52 VENC_GET_FLD,
53 &val);
54 if (ret < 0) {
55 v4l2_err(&vpbe_dev->v4l2_dev,
56 "Error in getting Field ID 0\n");
57 return 1;
58 }
59 return val;
60 }
61
62 static void vpbe_isr_even_field(struct vpbe_display *disp_obj,
63 struct vpbe_layer *layer)
64 {
65 if (layer->cur_frm == layer->next_frm)
66 return;
67
68 layer->cur_frm->vb.vb2_buf.timestamp = ktime_get_ns();
69 vb2_buffer_done(&layer->cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE);
70 /* Make cur_frm pointing to next_frm */
71 layer->cur_frm = layer->next_frm;
72 }
73
74 static void vpbe_isr_odd_field(struct vpbe_display *disp_obj,
75 struct vpbe_layer *layer)
76 {
77 struct osd_state *osd_device = disp_obj->osd_device;
78 unsigned long addr;
79
80 spin_lock(&disp_obj->dma_queue_lock);
81 if (list_empty(&layer->dma_queue) ||
82 (layer->cur_frm != layer->next_frm)) {
83 spin_unlock(&disp_obj->dma_queue_lock);
84 return;
85 }
86 /*
87 * one field is displayed configure
88 * the next frame if it is available
89 * otherwise hold on current frame
90 * Get next from the buffer queue
91 */
92 layer->next_frm = list_entry(layer->dma_queue.next,
93 struct vpbe_disp_buffer, list);
94 /* Remove that from the buffer queue */
95 list_del(&layer->next_frm->list);
96 spin_unlock(&disp_obj->dma_queue_lock);
97 /* Mark state of the frame to active */
98 layer->next_frm->vb.vb2_buf.state = VB2_BUF_STATE_ACTIVE;
99 addr = vb2_dma_contig_plane_dma_addr(&layer->next_frm->vb.vb2_buf, 0);
100 osd_device->ops.start_layer(osd_device,
101 layer->layer_info.id,
102 addr,
103 disp_obj->cbcr_ofst);
104 }
105
106 /* interrupt service routine */
107 static irqreturn_t venc_isr(int irq, void *arg)
108 {
109 struct vpbe_display *disp_dev = (struct vpbe_display *)arg;
110 struct vpbe_layer *layer;
111 static unsigned last_event;
112 unsigned event = 0;
113 int fid;
114 int i;
115
116 if (!arg || !disp_dev->dev[0])
117 return IRQ_HANDLED;
118
119 if (venc_is_second_field(disp_dev))
120 event |= VENC_SECOND_FIELD;
121 else
122 event |= VENC_FIRST_FIELD;
123
124 if (event == (last_event & ~VENC_END_OF_FRAME)) {
125 /*
126 * If the display is non-interlaced, then we need to flag the
127 * end-of-frame event at every interrupt regardless of the
128 * value of the FIDST bit. We can conclude that the display is
129 * non-interlaced if the value of the FIDST bit is unchanged
130 * from the previous interrupt.
131 */
132 event |= VENC_END_OF_FRAME;
133 } else if (event == VENC_SECOND_FIELD) {
134 /* end-of-frame for interlaced display */
135 event |= VENC_END_OF_FRAME;
136 }
137 last_event = event;
138
139 for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
140 layer = disp_dev->dev[i];
141
142 if (!vb2_start_streaming_called(&layer->buffer_queue))
143 continue;
144
145 if (layer->layer_first_int) {
146 layer->layer_first_int = 0;
147 continue;
148 }
149 /* Check the field format */
150 if ((V4L2_FIELD_NONE == layer->pix_fmt.field) &&
151 (event & VENC_END_OF_FRAME)) {
152 /* Progressive mode */
153
154 vpbe_isr_even_field(disp_dev, layer);
155 vpbe_isr_odd_field(disp_dev, layer);
156 } else {
157 /* Interlaced mode */
158
159 layer->field_id ^= 1;
160 if (event & VENC_FIRST_FIELD)
161 fid = 0;
162 else
163 fid = 1;
164
165 /*
166 * If field id does not match with store
167 * field id
168 */
169 if (fid != layer->field_id) {
170 /* Make them in sync */
171 layer->field_id = fid;
172 continue;
173 }
174 /*
175 * device field id and local field id are
176 * in sync. If this is even field
177 */
178 if (0 == fid)
179 vpbe_isr_even_field(disp_dev, layer);
180 else /* odd field */
181 vpbe_isr_odd_field(disp_dev, layer);
182 }
183 }
184
185 return IRQ_HANDLED;
186 }
187
188 /*
189 * vpbe_buffer_prepare()
190 * This is the callback function called from vb2_qbuf() function
191 * the buffer is prepared and user space virtual address is converted into
192 * physical address
193 */
194 static int vpbe_buffer_prepare(struct vb2_buffer *vb)
195 {
196 struct vb2_queue *q = vb->vb2_queue;
197 struct vpbe_layer *layer = vb2_get_drv_priv(q);
198 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
199 unsigned long addr;
200
201 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
202 "vpbe_buffer_prepare\n");
203
204 vb2_set_plane_payload(vb, 0, layer->pix_fmt.sizeimage);
205 if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
206 return -EINVAL;
207
208 addr = vb2_dma_contig_plane_dma_addr(vb, 0);
209 if (!IS_ALIGNED(addr, 8)) {
210 v4l2_err(&vpbe_dev->v4l2_dev,
211 "buffer_prepare:offset is not aligned to 32 bytes\n");
212 return -EINVAL;
213 }
214 return 0;
215 }
216
217 /*
218 * vpbe_buffer_setup()
219 * This function allocates memory for the buffers
220 */
221 static int
222 vpbe_buffer_queue_setup(struct vb2_queue *vq,
223 unsigned int *nbuffers, unsigned int *nplanes,
224 unsigned int sizes[], struct device *alloc_devs[])
225
226 {
227 /* Get the file handle object and layer object */
228 struct vpbe_layer *layer = vb2_get_drv_priv(vq);
229 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
230
231 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_buffer_setup\n");
232
233 /* Store number of buffers allocated in numbuffer member */
234 if (vq->num_buffers + *nbuffers < VPBE_DEFAULT_NUM_BUFS)
235 *nbuffers = VPBE_DEFAULT_NUM_BUFS - vq->num_buffers;
236
237 if (*nplanes)
238 return sizes[0] < layer->pix_fmt.sizeimage ? -EINVAL : 0;
239
240 *nplanes = 1;
241 sizes[0] = layer->pix_fmt.sizeimage;
242
243 return 0;
244 }
245
246 /*
247 * vpbe_buffer_queue()
248 * This function adds the buffer to DMA queue
249 */
250 static void vpbe_buffer_queue(struct vb2_buffer *vb)
251 {
252 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
253 /* Get the file handle object and layer object */
254 struct vpbe_disp_buffer *buf = container_of(vbuf,
255 struct vpbe_disp_buffer, vb);
256 struct vpbe_layer *layer = vb2_get_drv_priv(vb->vb2_queue);
257 struct vpbe_display *disp = layer->disp_dev;
258 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
259 unsigned long flags;
260
261 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
262 "vpbe_buffer_queue\n");
263
264 /* add the buffer to the DMA queue */
265 spin_lock_irqsave(&disp->dma_queue_lock, flags);
266 list_add_tail(&buf->list, &layer->dma_queue);
267 spin_unlock_irqrestore(&disp->dma_queue_lock, flags);
268 }
269
270 static int vpbe_start_streaming(struct vb2_queue *vq, unsigned int count)
271 {
272 struct vpbe_layer *layer = vb2_get_drv_priv(vq);
273 struct osd_state *osd_device = layer->disp_dev->osd_device;
274 int ret;
275
276 osd_device->ops.disable_layer(osd_device, layer->layer_info.id);
277
278 /* Get the next frame from the buffer queue */
279 layer->next_frm = layer->cur_frm = list_entry(layer->dma_queue.next,
280 struct vpbe_disp_buffer, list);
281 /* Remove buffer from the buffer queue */
282 list_del(&layer->cur_frm->list);
283 /* Mark state of the current frame to active */
284 layer->cur_frm->vb.vb2_buf.state = VB2_BUF_STATE_ACTIVE;
285 /* Initialize field_id and started member */
286 layer->field_id = 0;
287
288 /* Set parameters in OSD and VENC */
289 ret = vpbe_set_osd_display_params(layer->disp_dev, layer);
290 if (ret < 0) {
291 struct vpbe_disp_buffer *buf, *tmp;
292
293 vb2_buffer_done(&layer->cur_frm->vb.vb2_buf,
294 VB2_BUF_STATE_QUEUED);
295 list_for_each_entry_safe(buf, tmp, &layer->dma_queue, list) {
296 list_del(&buf->list);
297 vb2_buffer_done(&buf->vb.vb2_buf,
298 VB2_BUF_STATE_QUEUED);
299 }
300
301 return ret;
302 }
303
304 /*
305 * if request format is yuv420 semiplanar, need to
306 * enable both video windows
307 */
308 layer->layer_first_int = 1;
309
310 return ret;
311 }
312
313 static void vpbe_stop_streaming(struct vb2_queue *vq)
314 {
315 struct vpbe_layer *layer = vb2_get_drv_priv(vq);
316 struct osd_state *osd_device = layer->disp_dev->osd_device;
317 struct vpbe_display *disp = layer->disp_dev;
318 unsigned long flags;
319
320 if (!vb2_is_streaming(vq))
321 return;
322
323 osd_device->ops.disable_layer(osd_device, layer->layer_info.id);
324
325 /* release all active buffers */
326 spin_lock_irqsave(&disp->dma_queue_lock, flags);
327 if (layer->cur_frm == layer->next_frm) {
328 vb2_buffer_done(&layer->cur_frm->vb.vb2_buf,
329 VB2_BUF_STATE_ERROR);
330 } else {
331 if (layer->cur_frm)
332 vb2_buffer_done(&layer->cur_frm->vb.vb2_buf,
333 VB2_BUF_STATE_ERROR);
334 if (layer->next_frm)
335 vb2_buffer_done(&layer->next_frm->vb.vb2_buf,
336 VB2_BUF_STATE_ERROR);
337 }
338
339 while (!list_empty(&layer->dma_queue)) {
340 layer->next_frm = list_entry(layer->dma_queue.next,
341 struct vpbe_disp_buffer, list);
342 list_del(&layer->next_frm->list);
343 vb2_buffer_done(&layer->next_frm->vb.vb2_buf,
344 VB2_BUF_STATE_ERROR);
345 }
346 spin_unlock_irqrestore(&disp->dma_queue_lock, flags);
347 }
348
349 static const struct vb2_ops video_qops = {
350 .queue_setup = vpbe_buffer_queue_setup,
351 .wait_prepare = vb2_ops_wait_prepare,
352 .wait_finish = vb2_ops_wait_finish,
353 .buf_prepare = vpbe_buffer_prepare,
354 .start_streaming = vpbe_start_streaming,
355 .stop_streaming = vpbe_stop_streaming,
356 .buf_queue = vpbe_buffer_queue,
357 };
358
359 static
360 struct vpbe_layer*
361 _vpbe_display_get_other_win_layer(struct vpbe_display *disp_dev,
362 struct vpbe_layer *layer)
363 {
364 enum vpbe_display_device_id thiswin, otherwin;
365 thiswin = layer->device_id;
366
367 otherwin = (thiswin == VPBE_DISPLAY_DEVICE_0) ?
368 VPBE_DISPLAY_DEVICE_1 : VPBE_DISPLAY_DEVICE_0;
369 return disp_dev->dev[otherwin];
370 }
371
372 static int vpbe_set_osd_display_params(struct vpbe_display *disp_dev,
373 struct vpbe_layer *layer)
374 {
375 struct osd_layer_config *cfg = &layer->layer_info.config;
376 struct osd_state *osd_device = disp_dev->osd_device;
377 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
378 unsigned long addr;
379 int ret;
380
381 addr = vb2_dma_contig_plane_dma_addr(&layer->cur_frm->vb.vb2_buf, 0);
382 /* Set address in the display registers */
383 osd_device->ops.start_layer(osd_device,
384 layer->layer_info.id,
385 addr,
386 disp_dev->cbcr_ofst);
387
388 ret = osd_device->ops.enable_layer(osd_device,
389 layer->layer_info.id, 0);
390 if (ret < 0) {
391 v4l2_err(&vpbe_dev->v4l2_dev,
392 "Error in enabling osd window layer 0\n");
393 return -1;
394 }
395
396 /* Enable the window */
397 layer->layer_info.enable = 1;
398 if (cfg->pixfmt == PIXFMT_NV12) {
399 struct vpbe_layer *otherlayer =
400 _vpbe_display_get_other_win_layer(disp_dev, layer);
401
402 ret = osd_device->ops.enable_layer(osd_device,
403 otherlayer->layer_info.id, 1);
404 if (ret < 0) {
405 v4l2_err(&vpbe_dev->v4l2_dev,
406 "Error in enabling osd window layer 1\n");
407 return -1;
408 }
409 otherlayer->layer_info.enable = 1;
410 }
411 return 0;
412 }
413
414 static void
415 vpbe_disp_calculate_scale_factor(struct vpbe_display *disp_dev,
416 struct vpbe_layer *layer,
417 int expected_xsize, int expected_ysize)
418 {
419 struct display_layer_info *layer_info = &layer->layer_info;
420 struct v4l2_pix_format *pixfmt = &layer->pix_fmt;
421 struct osd_layer_config *cfg = &layer->layer_info.config;
422 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
423 int calculated_xsize;
424 int h_exp = 0;
425 int v_exp = 0;
426 int h_scale;
427 int v_scale;
428
429 v4l2_std_id standard_id = vpbe_dev->current_timings.std_id;
430
431 /*
432 * Application initially set the image format. Current display
433 * size is obtained from the vpbe display controller. expected_xsize
434 * and expected_ysize are set through S_SELECTION ioctl. Based on this,
435 * driver will calculate the scale factors for vertical and
436 * horizontal direction so that the image is displayed scaled
437 * and expanded. Application uses expansion to display the image
438 * in a square pixel. Otherwise it is displayed using displays
439 * pixel aspect ratio.It is expected that application chooses
440 * the crop coordinates for cropped or scaled display. if crop
441 * size is less than the image size, it is displayed cropped or
442 * it is displayed scaled and/or expanded.
443 *
444 * to begin with, set the crop window same as expected. Later we
445 * will override with scaled window size
446 */
447
448 cfg->xsize = pixfmt->width;
449 cfg->ysize = pixfmt->height;
450 layer_info->h_zoom = ZOOM_X1; /* no horizontal zoom */
451 layer_info->v_zoom = ZOOM_X1; /* no horizontal zoom */
452 layer_info->h_exp = H_EXP_OFF; /* no horizontal zoom */
453 layer_info->v_exp = V_EXP_OFF; /* no horizontal zoom */
454
455 if (pixfmt->width < expected_xsize) {
456 h_scale = vpbe_dev->current_timings.xres / pixfmt->width;
457 if (h_scale < 2)
458 h_scale = 1;
459 else if (h_scale >= 4)
460 h_scale = 4;
461 else
462 h_scale = 2;
463 cfg->xsize *= h_scale;
464 if (cfg->xsize < expected_xsize) {
465 if ((standard_id & V4L2_STD_525_60) ||
466 (standard_id & V4L2_STD_625_50)) {
467 calculated_xsize = (cfg->xsize *
468 VPBE_DISPLAY_H_EXP_RATIO_N) /
469 VPBE_DISPLAY_H_EXP_RATIO_D;
470 if (calculated_xsize <= expected_xsize) {
471 h_exp = 1;
472 cfg->xsize = calculated_xsize;
473 }
474 }
475 }
476 if (h_scale == 2)
477 layer_info->h_zoom = ZOOM_X2;
478 else if (h_scale == 4)
479 layer_info->h_zoom = ZOOM_X4;
480 if (h_exp)
481 layer_info->h_exp = H_EXP_9_OVER_8;
482 } else {
483 /* no scaling, only cropping. Set display area to crop area */
484 cfg->xsize = expected_xsize;
485 }
486
487 if (pixfmt->height < expected_ysize) {
488 v_scale = expected_ysize / pixfmt->height;
489 if (v_scale < 2)
490 v_scale = 1;
491 else if (v_scale >= 4)
492 v_scale = 4;
493 else
494 v_scale = 2;
495 cfg->ysize *= v_scale;
496 if (cfg->ysize < expected_ysize) {
497 if ((standard_id & V4L2_STD_625_50)) {
498 calculated_xsize = (cfg->ysize *
499 VPBE_DISPLAY_V_EXP_RATIO_N) /
500 VPBE_DISPLAY_V_EXP_RATIO_D;
501 if (calculated_xsize <= expected_ysize) {
502 v_exp = 1;
503 cfg->ysize = calculated_xsize;
504 }
505 }
506 }
507 if (v_scale == 2)
508 layer_info->v_zoom = ZOOM_X2;
509 else if (v_scale == 4)
510 layer_info->v_zoom = ZOOM_X4;
511 if (v_exp)
512 layer_info->v_exp = V_EXP_6_OVER_5;
513 } else {
514 /* no scaling, only cropping. Set display area to crop area */
515 cfg->ysize = expected_ysize;
516 }
517 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
518 "crop display xsize = %d, ysize = %d\n",
519 cfg->xsize, cfg->ysize);
520 }
521
522 static void vpbe_disp_adj_position(struct vpbe_display *disp_dev,
523 struct vpbe_layer *layer,
524 int top, int left)
525 {
526 struct osd_layer_config *cfg = &layer->layer_info.config;
527 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
528
529 cfg->xpos = min((unsigned int)left,
530 vpbe_dev->current_timings.xres - cfg->xsize);
531 cfg->ypos = min((unsigned int)top,
532 vpbe_dev->current_timings.yres - cfg->ysize);
533
534 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
535 "new xpos = %d, ypos = %d\n",
536 cfg->xpos, cfg->ypos);
537 }
538
539 static void vpbe_disp_check_window_params(struct vpbe_display *disp_dev,
540 struct v4l2_rect *c)
541 {
542 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
543
544 if ((c->width == 0) ||
545 ((c->width + c->left) > vpbe_dev->current_timings.xres))
546 c->width = vpbe_dev->current_timings.xres - c->left;
547
548 if ((c->height == 0) || ((c->height + c->top) >
549 vpbe_dev->current_timings.yres))
550 c->height = vpbe_dev->current_timings.yres - c->top;
551
552 /* window height must be even for interlaced display */
553 if (vpbe_dev->current_timings.interlaced)
554 c->height &= (~0x01);
555
556 }
557
558 /*
559 * vpbe_try_format()
560 * If user application provides width and height, and have bytesperline set
561 * to zero, driver calculates bytesperline and sizeimage based on hardware
562 * limits.
563 */
564 static int vpbe_try_format(struct vpbe_display *disp_dev,
565 struct v4l2_pix_format *pixfmt, int check)
566 {
567 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
568 int min_height = 1;
569 int min_width = 32;
570 int max_height;
571 int max_width;
572 int bpp;
573
574 if ((pixfmt->pixelformat != V4L2_PIX_FMT_UYVY) &&
575 (pixfmt->pixelformat != V4L2_PIX_FMT_NV12))
576 /* choose default as V4L2_PIX_FMT_UYVY */
577 pixfmt->pixelformat = V4L2_PIX_FMT_UYVY;
578
579 /* Check the field format */
580 if ((pixfmt->field != V4L2_FIELD_INTERLACED) &&
581 (pixfmt->field != V4L2_FIELD_NONE)) {
582 if (vpbe_dev->current_timings.interlaced)
583 pixfmt->field = V4L2_FIELD_INTERLACED;
584 else
585 pixfmt->field = V4L2_FIELD_NONE;
586 }
587
588 if (pixfmt->field == V4L2_FIELD_INTERLACED)
589 min_height = 2;
590
591 if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
592 bpp = 1;
593 else
594 bpp = 2;
595
596 max_width = vpbe_dev->current_timings.xres;
597 max_height = vpbe_dev->current_timings.yres;
598
599 min_width /= bpp;
600
601 if (!pixfmt->width || (pixfmt->width < min_width) ||
602 (pixfmt->width > max_width)) {
603 pixfmt->width = vpbe_dev->current_timings.xres;
604 }
605
606 if (!pixfmt->height || (pixfmt->height < min_height) ||
607 (pixfmt->height > max_height)) {
608 pixfmt->height = vpbe_dev->current_timings.yres;
609 }
610
611 if (pixfmt->bytesperline < (pixfmt->width * bpp))
612 pixfmt->bytesperline = pixfmt->width * bpp;
613
614 /* Make the bytesperline 32 byte aligned */
615 pixfmt->bytesperline = ((pixfmt->width * bpp + 31) & ~31);
616
617 if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
618 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height +
619 (pixfmt->bytesperline * pixfmt->height >> 1);
620 else
621 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
622
623 return 0;
624 }
625
626 static int vpbe_display_querycap(struct file *file, void *priv,
627 struct v4l2_capability *cap)
628 {
629 struct vpbe_layer *layer = video_drvdata(file);
630 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
631
632 snprintf(cap->driver, sizeof(cap->driver), "%s",
633 dev_name(vpbe_dev->pdev));
634 snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
635 dev_name(vpbe_dev->pdev));
636 strscpy(cap->card, vpbe_dev->cfg->module_name, sizeof(cap->card));
637
638 return 0;
639 }
640
641 static int vpbe_display_s_selection(struct file *file, void *priv,
642 struct v4l2_selection *sel)
643 {
644 struct vpbe_layer *layer = video_drvdata(file);
645 struct vpbe_display *disp_dev = layer->disp_dev;
646 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
647 struct osd_layer_config *cfg = &layer->layer_info.config;
648 struct osd_state *osd_device = disp_dev->osd_device;
649 struct v4l2_rect rect = sel->r;
650 int ret;
651
652 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
653 "VIDIOC_S_SELECTION, layer id = %d\n", layer->device_id);
654
655 if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT ||
656 sel->target != V4L2_SEL_TGT_CROP)
657 return -EINVAL;
658
659 if (rect.top < 0)
660 rect.top = 0;
661 if (rect.left < 0)
662 rect.left = 0;
663
664 vpbe_disp_check_window_params(disp_dev, &rect);
665
666 osd_device->ops.get_layer_config(osd_device,
667 layer->layer_info.id, cfg);
668
669 vpbe_disp_calculate_scale_factor(disp_dev, layer,
670 rect.width,
671 rect.height);
672 vpbe_disp_adj_position(disp_dev, layer, rect.top,
673 rect.left);
674 ret = osd_device->ops.set_layer_config(osd_device,
675 layer->layer_info.id, cfg);
676 if (ret < 0) {
677 v4l2_err(&vpbe_dev->v4l2_dev,
678 "Error in set layer config:\n");
679 return -EINVAL;
680 }
681
682 /* apply zooming and h or v expansion */
683 osd_device->ops.set_zoom(osd_device,
684 layer->layer_info.id,
685 layer->layer_info.h_zoom,
686 layer->layer_info.v_zoom);
687 ret = osd_device->ops.set_vid_expansion(osd_device,
688 layer->layer_info.h_exp,
689 layer->layer_info.v_exp);
690 if (ret < 0) {
691 v4l2_err(&vpbe_dev->v4l2_dev,
692 "Error in set vid expansion:\n");
693 return -EINVAL;
694 }
695
696 if ((layer->layer_info.h_zoom != ZOOM_X1) ||
697 (layer->layer_info.v_zoom != ZOOM_X1) ||
698 (layer->layer_info.h_exp != H_EXP_OFF) ||
699 (layer->layer_info.v_exp != V_EXP_OFF))
700 /* Enable expansion filter */
701 osd_device->ops.set_interpolation_filter(osd_device, 1);
702 else
703 osd_device->ops.set_interpolation_filter(osd_device, 0);
704
705 sel->r = rect;
706 return 0;
707 }
708
709 static int vpbe_display_g_selection(struct file *file, void *priv,
710 struct v4l2_selection *sel)
711 {
712 struct vpbe_layer *layer = video_drvdata(file);
713 struct osd_layer_config *cfg = &layer->layer_info.config;
714 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
715 struct osd_state *osd_device = layer->disp_dev->osd_device;
716 struct v4l2_rect *rect = &sel->r;
717
718 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
719 "VIDIOC_G_SELECTION, layer id = %d\n",
720 layer->device_id);
721
722 if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
723 return -EINVAL;
724
725 switch (sel->target) {
726 case V4L2_SEL_TGT_CROP:
727 osd_device->ops.get_layer_config(osd_device,
728 layer->layer_info.id, cfg);
729 rect->top = cfg->ypos;
730 rect->left = cfg->xpos;
731 rect->width = cfg->xsize;
732 rect->height = cfg->ysize;
733 break;
734 case V4L2_SEL_TGT_CROP_DEFAULT:
735 case V4L2_SEL_TGT_CROP_BOUNDS:
736 rect->left = 0;
737 rect->top = 0;
738 rect->width = vpbe_dev->current_timings.xres;
739 rect->height = vpbe_dev->current_timings.yres;
740 break;
741 default:
742 return -EINVAL;
743 }
744
745 return 0;
746 }
747
748 static int vpbe_display_g_pixelaspect(struct file *file, void *priv,
749 int type, struct v4l2_fract *f)
750 {
751 struct vpbe_layer *layer = video_drvdata(file);
752 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
753
754 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_CROPCAP ioctl\n");
755
756 if (type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
757 return -EINVAL;
758
759 *f = vpbe_dev->current_timings.aspect;
760 return 0;
761 }
762
763 static int vpbe_display_g_fmt(struct file *file, void *priv,
764 struct v4l2_format *fmt)
765 {
766 struct vpbe_layer *layer = video_drvdata(file);
767 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
768
769 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
770 "VIDIOC_G_FMT, layer id = %d\n",
771 layer->device_id);
772
773 /* If buffer type is video output */
774 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
775 v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
776 return -EINVAL;
777 }
778 /* Fill in the information about format */
779 fmt->fmt.pix = layer->pix_fmt;
780
781 return 0;
782 }
783
784 static int vpbe_display_enum_fmt(struct file *file, void *priv,
785 struct v4l2_fmtdesc *fmt)
786 {
787 struct vpbe_layer *layer = video_drvdata(file);
788 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
789
790 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
791 "VIDIOC_ENUM_FMT, layer id = %d\n",
792 layer->device_id);
793 if (fmt->index > 1) {
794 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid format index\n");
795 return -EINVAL;
796 }
797
798 /* Fill in the information about format */
799 if (fmt->index == 0)
800 fmt->pixelformat = V4L2_PIX_FMT_UYVY;
801 else
802 fmt->pixelformat = V4L2_PIX_FMT_NV12;
803
804 return 0;
805 }
806
807 static int vpbe_display_s_fmt(struct file *file, void *priv,
808 struct v4l2_format *fmt)
809 {
810 struct vpbe_layer *layer = video_drvdata(file);
811 struct vpbe_display *disp_dev = layer->disp_dev;
812 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
813 struct osd_layer_config *cfg = &layer->layer_info.config;
814 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
815 struct osd_state *osd_device = disp_dev->osd_device;
816 int ret;
817
818 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
819 "VIDIOC_S_FMT, layer id = %d\n",
820 layer->device_id);
821
822 if (vb2_is_busy(&layer->buffer_queue))
823 return -EBUSY;
824
825 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
826 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "invalid type\n");
827 return -EINVAL;
828 }
829 /* Check for valid pixel format */
830 ret = vpbe_try_format(disp_dev, pixfmt, 1);
831 if (ret)
832 return ret;
833
834 /* YUV420 is requested, check availability of the
835 other video window */
836
837 layer->pix_fmt = *pixfmt;
838 if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12) {
839 struct vpbe_layer *otherlayer;
840
841 otherlayer = _vpbe_display_get_other_win_layer(disp_dev, layer);
842 /* if other layer is available, only
843 * claim it, do not configure it
844 */
845 ret = osd_device->ops.request_layer(osd_device,
846 otherlayer->layer_info.id);
847 if (ret < 0) {
848 v4l2_err(&vpbe_dev->v4l2_dev,
849 "Display Manager failed to allocate layer\n");
850 return -EBUSY;
851 }
852 }
853
854 /* Get osd layer config */
855 osd_device->ops.get_layer_config(osd_device,
856 layer->layer_info.id, cfg);
857 /* Store the pixel format in the layer object */
858 cfg->xsize = pixfmt->width;
859 cfg->ysize = pixfmt->height;
860 cfg->line_length = pixfmt->bytesperline;
861 cfg->ypos = 0;
862 cfg->xpos = 0;
863 cfg->interlaced = vpbe_dev->current_timings.interlaced;
864
865 if (V4L2_PIX_FMT_UYVY == pixfmt->pixelformat)
866 cfg->pixfmt = PIXFMT_YCBCRI;
867
868 /* Change of the default pixel format for both video windows */
869 if (V4L2_PIX_FMT_NV12 == pixfmt->pixelformat) {
870 struct vpbe_layer *otherlayer;
871 cfg->pixfmt = PIXFMT_NV12;
872 otherlayer = _vpbe_display_get_other_win_layer(disp_dev,
873 layer);
874 otherlayer->layer_info.config.pixfmt = PIXFMT_NV12;
875 }
876
877 /* Set the layer config in the osd window */
878 ret = osd_device->ops.set_layer_config(osd_device,
879 layer->layer_info.id, cfg);
880 if (ret < 0) {
881 v4l2_err(&vpbe_dev->v4l2_dev,
882 "Error in S_FMT params:\n");
883 return -EINVAL;
884 }
885
886 /* Readback and fill the local copy of current pix format */
887 osd_device->ops.get_layer_config(osd_device,
888 layer->layer_info.id, cfg);
889
890 return 0;
891 }
892
893 static int vpbe_display_try_fmt(struct file *file, void *priv,
894 struct v4l2_format *fmt)
895 {
896 struct vpbe_layer *layer = video_drvdata(file);
897 struct vpbe_display *disp_dev = layer->disp_dev;
898 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
899 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
900
901 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_TRY_FMT\n");
902
903 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
904 v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
905 return -EINVAL;
906 }
907
908 /* Check for valid field format */
909 return vpbe_try_format(disp_dev, pixfmt, 0);
910
911 }
912
913 /*
914 * vpbe_display_s_std - Set the given standard in the encoder
915 *
916 * Sets the standard if supported by the current encoder. Return the status.
917 * 0 - success & -EINVAL on error
918 */
919 static int vpbe_display_s_std(struct file *file, void *priv,
920 v4l2_std_id std_id)
921 {
922 struct vpbe_layer *layer = video_drvdata(file);
923 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
924 int ret;
925
926 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_STD\n");
927
928 if (vb2_is_busy(&layer->buffer_queue))
929 return -EBUSY;
930
931 if (vpbe_dev->ops.s_std) {
932 ret = vpbe_dev->ops.s_std(vpbe_dev, std_id);
933 if (ret) {
934 v4l2_err(&vpbe_dev->v4l2_dev,
935 "Failed to set standard for sub devices\n");
936 return -EINVAL;
937 }
938 } else {
939 return -EINVAL;
940 }
941
942 return 0;
943 }
944
945 /*
946 * vpbe_display_g_std - Get the standard in the current encoder
947 *
948 * Get the standard in the current encoder. Return the status. 0 - success
949 * -EINVAL on error
950 */
951 static int vpbe_display_g_std(struct file *file, void *priv,
952 v4l2_std_id *std_id)
953 {
954 struct vpbe_layer *layer = video_drvdata(file);
955 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
956
957 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_STD\n");
958
959 /* Get the standard from the current encoder */
960 if (vpbe_dev->current_timings.timings_type & VPBE_ENC_STD) {
961 *std_id = vpbe_dev->current_timings.std_id;
962 return 0;
963 }
964
965 return -EINVAL;
966 }
967
968 /*
969 * vpbe_display_enum_output - enumerate outputs
970 *
971 * Enumerates the outputs available at the vpbe display
972 * returns the status, -EINVAL if end of output list
973 */
974 static int vpbe_display_enum_output(struct file *file, void *priv,
975 struct v4l2_output *output)
976 {
977 struct vpbe_layer *layer = video_drvdata(file);
978 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
979 int ret;
980
981 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_OUTPUT\n");
982
983 /* Enumerate outputs */
984 if (!vpbe_dev->ops.enum_outputs)
985 return -EINVAL;
986
987 ret = vpbe_dev->ops.enum_outputs(vpbe_dev, output);
988 if (ret) {
989 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
990 "Failed to enumerate outputs\n");
991 return -EINVAL;
992 }
993
994 return 0;
995 }
996
997 /*
998 * vpbe_display_s_output - Set output to
999 * the output specified by the index
1000 */
1001 static int vpbe_display_s_output(struct file *file, void *priv,
1002 unsigned int i)
1003 {
1004 struct vpbe_layer *layer = video_drvdata(file);
1005 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1006 int ret;
1007
1008 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_OUTPUT\n");
1009
1010 if (vb2_is_busy(&layer->buffer_queue))
1011 return -EBUSY;
1012
1013 if (!vpbe_dev->ops.set_output)
1014 return -EINVAL;
1015
1016 ret = vpbe_dev->ops.set_output(vpbe_dev, i);
1017 if (ret) {
1018 v4l2_err(&vpbe_dev->v4l2_dev,
1019 "Failed to set output for sub devices\n");
1020 return -EINVAL;
1021 }
1022
1023 return 0;
1024 }
1025
1026 /*
1027 * vpbe_display_g_output - Get output from subdevice
1028 * for a given by the index
1029 */
1030 static int vpbe_display_g_output(struct file *file, void *priv,
1031 unsigned int *i)
1032 {
1033 struct vpbe_layer *layer = video_drvdata(file);
1034 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1035
1036 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_OUTPUT\n");
1037 /* Get the standard from the current encoder */
1038 *i = vpbe_dev->current_out_index;
1039
1040 return 0;
1041 }
1042
1043 /*
1044 * vpbe_display_enum_dv_timings - Enumerate the dv timings
1045 *
1046 * enum the timings in the current encoder. Return the status. 0 - success
1047 * -EINVAL on error
1048 */
1049 static int
1050 vpbe_display_enum_dv_timings(struct file *file, void *priv,
1051 struct v4l2_enum_dv_timings *timings)
1052 {
1053 struct vpbe_layer *layer = video_drvdata(file);
1054 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1055 int ret;
1056
1057 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_DV_TIMINGS\n");
1058
1059 /* Enumerate outputs */
1060 if (!vpbe_dev->ops.enum_dv_timings)
1061 return -EINVAL;
1062
1063 ret = vpbe_dev->ops.enum_dv_timings(vpbe_dev, timings);
1064 if (ret) {
1065 v4l2_err(&vpbe_dev->v4l2_dev,
1066 "Failed to enumerate dv timings info\n");
1067 return -EINVAL;
1068 }
1069
1070 return 0;
1071 }
1072
1073 /*
1074 * vpbe_display_s_dv_timings - Set the dv timings
1075 *
1076 * Set the timings in the current encoder. Return the status. 0 - success
1077 * -EINVAL on error
1078 */
1079 static int
1080 vpbe_display_s_dv_timings(struct file *file, void *priv,
1081 struct v4l2_dv_timings *timings)
1082 {
1083 struct vpbe_layer *layer = video_drvdata(file);
1084 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1085 int ret;
1086
1087 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_DV_TIMINGS\n");
1088
1089 if (vb2_is_busy(&layer->buffer_queue))
1090 return -EBUSY;
1091
1092 /* Set the given standard in the encoder */
1093 if (!vpbe_dev->ops.s_dv_timings)
1094 return -EINVAL;
1095
1096 ret = vpbe_dev->ops.s_dv_timings(vpbe_dev, timings);
1097 if (ret) {
1098 v4l2_err(&vpbe_dev->v4l2_dev,
1099 "Failed to set the dv timings info\n");
1100 return -EINVAL;
1101 }
1102
1103 return 0;
1104 }
1105
1106 /*
1107 * vpbe_display_g_dv_timings - Set the dv timings
1108 *
1109 * Get the timings in the current encoder. Return the status. 0 - success
1110 * -EINVAL on error
1111 */
1112 static int
1113 vpbe_display_g_dv_timings(struct file *file, void *priv,
1114 struct v4l2_dv_timings *dv_timings)
1115 {
1116 struct vpbe_layer *layer = video_drvdata(file);
1117 struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1118
1119 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_DV_TIMINGS\n");
1120
1121 /* Get the given standard in the encoder */
1122
1123 if (vpbe_dev->current_timings.timings_type &
1124 VPBE_ENC_DV_TIMINGS) {
1125 *dv_timings = vpbe_dev->current_timings.dv_timings;
1126 } else {
1127 return -EINVAL;
1128 }
1129
1130 return 0;
1131 }
1132
1133 /*
1134 * vpbe_display_open()
1135 * It creates object of file handle structure and stores it in private_data
1136 * member of filepointer
1137 */
1138 static int vpbe_display_open(struct file *file)
1139 {
1140 struct vpbe_layer *layer = video_drvdata(file);
1141 struct vpbe_display *disp_dev = layer->disp_dev;
1142 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1143 struct osd_state *osd_device = disp_dev->osd_device;
1144 int err;
1145
1146 /* creating context for file descriptor */
1147 err = v4l2_fh_open(file);
1148 if (err) {
1149 v4l2_err(&vpbe_dev->v4l2_dev, "v4l2_fh_open failed\n");
1150 return err;
1151 }
1152
1153 /* leaving if layer is already initialized */
1154 if (!v4l2_fh_is_singular_file(file))
1155 return err;
1156
1157 if (!layer->usrs) {
1158 if (mutex_lock_interruptible(&layer->opslock))
1159 return -ERESTARTSYS;
1160 /* First claim the layer for this device */
1161 err = osd_device->ops.request_layer(osd_device,
1162 layer->layer_info.id);
1163 mutex_unlock(&layer->opslock);
1164 if (err < 0) {
1165 /* Couldn't get layer */
1166 v4l2_err(&vpbe_dev->v4l2_dev,
1167 "Display Manager failed to allocate layer\n");
1168 v4l2_fh_release(file);
1169 return -EINVAL;
1170 }
1171 }
1172 /* Increment layer usrs counter */
1173 layer->usrs++;
1174 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1175 "vpbe display device opened successfully\n");
1176 return 0;
1177 }
1178
1179 /*
1180 * vpbe_display_release()
1181 * This function deletes buffer queue, frees the buffers and the davinci
1182 * display file * handle
1183 */
1184 static int vpbe_display_release(struct file *file)
1185 {
1186 struct vpbe_layer *layer = video_drvdata(file);
1187 struct osd_layer_config *cfg = &layer->layer_info.config;
1188 struct vpbe_display *disp_dev = layer->disp_dev;
1189 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1190 struct osd_state *osd_device = disp_dev->osd_device;
1191
1192 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_release\n");
1193
1194 mutex_lock(&layer->opslock);
1195
1196 osd_device->ops.disable_layer(osd_device,
1197 layer->layer_info.id);
1198 /* Decrement layer usrs counter */
1199 layer->usrs--;
1200 /* If this file handle has initialize encoder device, reset it */
1201 if (!layer->usrs) {
1202 if (cfg->pixfmt == PIXFMT_NV12) {
1203 struct vpbe_layer *otherlayer;
1204 otherlayer =
1205 _vpbe_display_get_other_win_layer(disp_dev, layer);
1206 osd_device->ops.disable_layer(osd_device,
1207 otherlayer->layer_info.id);
1208 osd_device->ops.release_layer(osd_device,
1209 otherlayer->layer_info.id);
1210 }
1211 osd_device->ops.disable_layer(osd_device,
1212 layer->layer_info.id);
1213 osd_device->ops.release_layer(osd_device,
1214 layer->layer_info.id);
1215 }
1216
1217 _vb2_fop_release(file, NULL);
1218 mutex_unlock(&layer->opslock);
1219
1220 disp_dev->cbcr_ofst = 0;
1221
1222 return 0;
1223 }
1224
1225 /* vpbe capture ioctl operations */
1226 static const struct v4l2_ioctl_ops vpbe_ioctl_ops = {
1227 .vidioc_querycap = vpbe_display_querycap,
1228 .vidioc_g_fmt_vid_out = vpbe_display_g_fmt,
1229 .vidioc_enum_fmt_vid_out = vpbe_display_enum_fmt,
1230 .vidioc_s_fmt_vid_out = vpbe_display_s_fmt,
1231 .vidioc_try_fmt_vid_out = vpbe_display_try_fmt,
1232
1233 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1234 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1235 .vidioc_querybuf = vb2_ioctl_querybuf,
1236 .vidioc_qbuf = vb2_ioctl_qbuf,
1237 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1238 .vidioc_streamon = vb2_ioctl_streamon,
1239 .vidioc_streamoff = vb2_ioctl_streamoff,
1240 .vidioc_expbuf = vb2_ioctl_expbuf,
1241
1242 .vidioc_g_pixelaspect = vpbe_display_g_pixelaspect,
1243 .vidioc_g_selection = vpbe_display_g_selection,
1244 .vidioc_s_selection = vpbe_display_s_selection,
1245
1246 .vidioc_s_std = vpbe_display_s_std,
1247 .vidioc_g_std = vpbe_display_g_std,
1248
1249 .vidioc_enum_output = vpbe_display_enum_output,
1250 .vidioc_s_output = vpbe_display_s_output,
1251 .vidioc_g_output = vpbe_display_g_output,
1252
1253 .vidioc_s_dv_timings = vpbe_display_s_dv_timings,
1254 .vidioc_g_dv_timings = vpbe_display_g_dv_timings,
1255 .vidioc_enum_dv_timings = vpbe_display_enum_dv_timings,
1256 };
1257
1258 static const struct v4l2_file_operations vpbe_fops = {
1259 .owner = THIS_MODULE,
1260 .open = vpbe_display_open,
1261 .release = vpbe_display_release,
1262 .unlocked_ioctl = video_ioctl2,
1263 .mmap = vb2_fop_mmap,
1264 .poll = vb2_fop_poll,
1265 };
1266
1267 static int vpbe_device_get(struct device *dev, void *data)
1268 {
1269 struct platform_device *pdev = to_platform_device(dev);
1270 struct vpbe_display *vpbe_disp = data;
1271
1272 if (strcmp("vpbe_controller", pdev->name) == 0)
1273 vpbe_disp->vpbe_dev = platform_get_drvdata(pdev);
1274
1275 if (strstr(pdev->name, "vpbe-osd"))
1276 vpbe_disp->osd_device = platform_get_drvdata(pdev);
1277
1278 return 0;
1279 }
1280
1281 static int init_vpbe_layer(int i, struct vpbe_display *disp_dev,
1282 struct platform_device *pdev)
1283 {
1284 struct vpbe_layer *vpbe_display_layer = NULL;
1285 struct video_device *vbd = NULL;
1286
1287 /* Allocate memory for four plane display objects */
1288 disp_dev->dev[i] = kzalloc(sizeof(*disp_dev->dev[i]), GFP_KERNEL);
1289 if (!disp_dev->dev[i])
1290 return -ENOMEM;
1291
1292 spin_lock_init(&disp_dev->dev[i]->irqlock);
1293 mutex_init(&disp_dev->dev[i]->opslock);
1294
1295 /* Get the pointer to the layer object */
1296 vpbe_display_layer = disp_dev->dev[i];
1297 vbd = &vpbe_display_layer->video_dev;
1298 /* Initialize field of video device */
1299 vbd->release = video_device_release_empty;
1300 vbd->fops = &vpbe_fops;
1301 vbd->ioctl_ops = &vpbe_ioctl_ops;
1302 vbd->minor = -1;
1303 vbd->v4l2_dev = &disp_dev->vpbe_dev->v4l2_dev;
1304 vbd->lock = &vpbe_display_layer->opslock;
1305 vbd->vfl_dir = VFL_DIR_TX;
1306 vbd->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
1307
1308 if (disp_dev->vpbe_dev->current_timings.timings_type &
1309 VPBE_ENC_STD)
1310 vbd->tvnorms = (V4L2_STD_525_60 | V4L2_STD_625_50);
1311
1312 snprintf(vbd->name, sizeof(vbd->name),
1313 "DaVinci_VPBE Display_DRIVER_V%d.%d.%d",
1314 (VPBE_DISPLAY_VERSION_CODE >> 16) & 0xff,
1315 (VPBE_DISPLAY_VERSION_CODE >> 8) & 0xff,
1316 (VPBE_DISPLAY_VERSION_CODE) & 0xff);
1317
1318 vpbe_display_layer->device_id = i;
1319
1320 vpbe_display_layer->layer_info.id =
1321 ((i == VPBE_DISPLAY_DEVICE_0) ? WIN_VID0 : WIN_VID1);
1322
1323
1324 return 0;
1325 }
1326
1327 static int register_device(struct vpbe_layer *vpbe_display_layer,
1328 struct vpbe_display *disp_dev,
1329 struct platform_device *pdev)
1330 {
1331 int err;
1332
1333 v4l2_info(&disp_dev->vpbe_dev->v4l2_dev,
1334 "Trying to register VPBE display device.\n");
1335 v4l2_info(&disp_dev->vpbe_dev->v4l2_dev,
1336 "layer=%p,layer->video_dev=%p\n",
1337 vpbe_display_layer,
1338 &vpbe_display_layer->video_dev);
1339
1340 vpbe_display_layer->video_dev.queue = &vpbe_display_layer->buffer_queue;
1341 err = video_register_device(&vpbe_display_layer->video_dev,
1342 VFL_TYPE_GRABBER,
1343 -1);
1344 if (err)
1345 return -ENODEV;
1346
1347 vpbe_display_layer->disp_dev = disp_dev;
1348 /* set the driver data in platform device */
1349 platform_set_drvdata(pdev, disp_dev);
1350 video_set_drvdata(&vpbe_display_layer->video_dev,
1351 vpbe_display_layer);
1352
1353 return 0;
1354 }
1355
1356
1357
1358 /*
1359 * vpbe_display_probe()
1360 * This function creates device entries by register itself to the V4L2 driver
1361 * and initializes fields of each layer objects
1362 */
1363 static int vpbe_display_probe(struct platform_device *pdev)
1364 {
1365 struct vpbe_display *disp_dev;
1366 struct v4l2_device *v4l2_dev;
1367 struct resource *res = NULL;
1368 struct vb2_queue *q;
1369 int k;
1370 int i;
1371 int err;
1372 int irq;
1373
1374 printk(KERN_DEBUG "vpbe_display_probe\n");
1375 /* Allocate memory for vpbe_display */
1376 disp_dev = devm_kzalloc(&pdev->dev, sizeof(*disp_dev), GFP_KERNEL);
1377 if (!disp_dev)
1378 return -ENOMEM;
1379
1380 spin_lock_init(&disp_dev->dma_queue_lock);
1381 /*
1382 * Scan all the platform devices to find the vpbe
1383 * controller device and get the vpbe_dev object
1384 */
1385 err = bus_for_each_dev(&platform_bus_type, NULL, disp_dev,
1386 vpbe_device_get);
1387 if (err < 0)
1388 return err;
1389
1390 v4l2_dev = &disp_dev->vpbe_dev->v4l2_dev;
1391 /* Initialize the vpbe display controller */
1392 if (disp_dev->vpbe_dev->ops.initialize) {
1393 err = disp_dev->vpbe_dev->ops.initialize(&pdev->dev,
1394 disp_dev->vpbe_dev);
1395 if (err) {
1396 v4l2_err(v4l2_dev, "Error initing vpbe\n");
1397 err = -ENOMEM;
1398 goto probe_out;
1399 }
1400 }
1401
1402 for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1403 if (init_vpbe_layer(i, disp_dev, pdev)) {
1404 err = -ENODEV;
1405 goto probe_out;
1406 }
1407 }
1408
1409 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1410 if (!res) {
1411 v4l2_err(v4l2_dev, "Unable to get VENC interrupt resource\n");
1412 err = -ENODEV;
1413 goto probe_out;
1414 }
1415
1416 irq = res->start;
1417 err = devm_request_irq(&pdev->dev, irq, venc_isr, 0,
1418 VPBE_DISPLAY_DRIVER, disp_dev);
1419 if (err) {
1420 v4l2_err(v4l2_dev, "VPBE IRQ request failed\n");
1421 goto probe_out;
1422 }
1423
1424 for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1425 /* initialize vb2 queue */
1426 q = &disp_dev->dev[i]->buffer_queue;
1427 memset(q, 0, sizeof(*q));
1428 q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1429 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1430 q->drv_priv = disp_dev->dev[i];
1431 q->ops = &video_qops;
1432 q->mem_ops = &vb2_dma_contig_memops;
1433 q->buf_struct_size = sizeof(struct vpbe_disp_buffer);
1434 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1435 q->min_buffers_needed = 1;
1436 q->lock = &disp_dev->dev[i]->opslock;
1437 q->dev = disp_dev->vpbe_dev->pdev;
1438 err = vb2_queue_init(q);
1439 if (err) {
1440 v4l2_err(v4l2_dev, "vb2_queue_init() failed\n");
1441 goto probe_out;
1442 }
1443
1444 INIT_LIST_HEAD(&disp_dev->dev[i]->dma_queue);
1445
1446 if (register_device(disp_dev->dev[i], disp_dev, pdev)) {
1447 err = -ENODEV;
1448 goto probe_out;
1449 }
1450 }
1451
1452 v4l2_dbg(1, debug, v4l2_dev,
1453 "Successfully completed the probing of vpbe v4l2 device\n");
1454
1455 return 0;
1456
1457 probe_out:
1458 for (k = 0; k < VPBE_DISPLAY_MAX_DEVICES; k++) {
1459 /* Unregister video device */
1460 if (disp_dev->dev[k]) {
1461 video_unregister_device(&disp_dev->dev[k]->video_dev);
1462 kfree(disp_dev->dev[k]);
1463 }
1464 }
1465 return err;
1466 }
1467
1468 /*
1469 * vpbe_display_remove()
1470 * It un-register hardware layer from V4L2 driver
1471 */
1472 static int vpbe_display_remove(struct platform_device *pdev)
1473 {
1474 struct vpbe_layer *vpbe_display_layer;
1475 struct vpbe_display *disp_dev = platform_get_drvdata(pdev);
1476 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1477 int i;
1478
1479 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_remove\n");
1480
1481 /* deinitialize the vpbe display controller */
1482 if (vpbe_dev->ops.deinitialize)
1483 vpbe_dev->ops.deinitialize(&pdev->dev, vpbe_dev);
1484 /* un-register device */
1485 for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1486 /* Get the pointer to the layer object */
1487 vpbe_display_layer = disp_dev->dev[i];
1488 /* Unregister video device */
1489 video_unregister_device(&vpbe_display_layer->video_dev);
1490
1491 }
1492 for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1493 kfree(disp_dev->dev[i]);
1494 disp_dev->dev[i] = NULL;
1495 }
1496
1497 return 0;
1498 }
1499
1500 static struct platform_driver vpbe_display_driver = {
1501 .driver = {
1502 .name = VPBE_DISPLAY_DRIVER,
1503 .bus = &platform_bus_type,
1504 },
1505 .probe = vpbe_display_probe,
1506 .remove = vpbe_display_remove,
1507 };
1508
1509 module_platform_driver(vpbe_display_driver);
1510
1511 MODULE_DESCRIPTION("TI DM644x/DM355/DM365 VPBE Display controller");
1512 MODULE_LICENSE("GPL");
1513 MODULE_AUTHOR("Texas Instruments");
Linux with added FPC-III support