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Merge git://www.linux-watchdog.org/linux-watchdog
[linux-2.6-block.git] / drivers / media / platform / davinci / vpbe_display.c
CommitLineData
a2c25b44
MH		 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
44static int debug;
45
a2c25b44
MH		 46#define VPBE_DEFAULT_NUM_BUFS 3
47
48module_param(debug, int, 0644);
49
13fc23d3
LP		 50static int vpbe_set_osd_display_params(struct vpbe_display *disp_dev,
51 struct vpbe_layer *layer);
52
a2c25b44
MH		 53static 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
71static void vpbe_isr_even_field(struct vpbe_display *disp_obj,
72 struct vpbe_layer *layer)
73{
74 struct timespec timevalue;
75
76 if (layer->cur_frm == layer->next_frm)
77 return;
78 ktime_get_ts(&timevalue);
13fc23d3
LP		 79 layer->cur_frm->vb.v4l2_buf.timestamp.tv_sec =
80 timevalue.tv_sec;
81 layer->cur_frm->vb.v4l2_buf.timestamp.tv_usec =
82 timevalue.tv_nsec / NSEC_PER_USEC;
83 vb2_buffer_done(&layer->cur_frm->vb, VB2_BUF_STATE_DONE);
a2c25b44
MH		 84 /* Make cur_frm pointing to next_frm */
85 layer->cur_frm = layer->next_frm;
86}
87
88static void vpbe_isr_odd_field(struct vpbe_display *disp_obj,
89 struct vpbe_layer *layer)
90{
91 struct osd_state *osd_device = disp_obj->osd_device;
92 unsigned long addr;
93
94 spin_lock(&disp_obj->dma_queue_lock);
95 if (list_empty(&layer->dma_queue) ||
96 (layer->cur_frm != layer->next_frm)) {
97 spin_unlock(&disp_obj->dma_queue_lock);
98 return;
99 }
100 /*
101 * one field is displayed configure
102 * the next frame if it is available
103 * otherwise hold on current frame
104 * Get next from the buffer queue
105 */
13fc23d3
LP		 106 layer->next_frm = list_entry(layer->dma_queue.next,
107 struct vpbe_disp_buffer, list);
a2c25b44 108 /* Remove that from the buffer queue */
13fc23d3 109 list_del(&layer->next_frm->list);
a2c25b44
MH		 110 spin_unlock(&disp_obj->dma_queue_lock);
111 /* Mark state of the frame to active */
13fc23d3
LP		 112 layer->next_frm->vb.state = VB2_BUF_STATE_ACTIVE;
113 addr = vb2_dma_contig_plane_dma_addr(&layer->next_frm->vb, 0);
a2c25b44
MH		 114 osd_device->ops.start_layer(osd_device,
115 layer->layer_info.id,
116 addr,
117 disp_obj->cbcr_ofst);
118}
119
120/* interrupt service routine */
121static irqreturn_t venc_isr(int irq, void *arg)
122{
123 struct vpbe_display *disp_dev = (struct vpbe_display *)arg;
124 struct vpbe_layer *layer;
125 static unsigned last_event;
126 unsigned event = 0;
127 int fid;
128 int i;
129
130 if ((NULL == arg) || (NULL == disp_dev->dev[0]))
131 return IRQ_HANDLED;
132
133 if (venc_is_second_field(disp_dev))
134 event |= VENC_SECOND_FIELD;
135 else
136 event |= VENC_FIRST_FIELD;
137
138 if (event == (last_event & ~VENC_END_OF_FRAME)) {
139 /*
140 * If the display is non-interlaced, then we need to flag the
141 * end-of-frame event at every interrupt regardless of the
142 * value of the FIDST bit. We can conclude that the display is
143 * non-interlaced if the value of the FIDST bit is unchanged
144 * from the previous interrupt.
145 */
146 event |= VENC_END_OF_FRAME;
147 } else if (event == VENC_SECOND_FIELD) {
148 /* end-of-frame for interlaced display */
149 event |= VENC_END_OF_FRAME;
150 }
151 last_event = event;
152
153 for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
154 layer = disp_dev->dev[i];
155 /* If streaming is started in this layer */
156 if (!layer->started)
157 continue;
158
159 if (layer->layer_first_int) {
160 layer->layer_first_int = 0;
161 continue;
162 }
163 /* Check the field format */
164 if ((V4L2_FIELD_NONE == layer->pix_fmt.field) &&
165 (event & VENC_END_OF_FRAME)) {
166 /* Progressive mode */
167
168 vpbe_isr_even_field(disp_dev, layer);
169 vpbe_isr_odd_field(disp_dev, layer);
170 } else {
171 /* Interlaced mode */
172
173 layer->field_id ^= 1;
174 if (event & VENC_FIRST_FIELD)
175 fid = 0;
176 else
177 fid = 1;
178
179 /*
180 * If field id does not match with store
181 * field id
182 */
183 if (fid != layer->field_id) {
184 /* Make them in sync */
185 layer->field_id = fid;
186 continue;
187 }
188 /*
189 * device field id and local field id are
190 * in sync. If this is even field
191 */
192 if (0 == fid)
193 vpbe_isr_even_field(disp_dev, layer);
194 else /* odd field */
195 vpbe_isr_odd_field(disp_dev, layer);
196 }
197 }
198
199 return IRQ_HANDLED;
200}
201
202/*
203 * vpbe_buffer_prepare()
13fc23d3 204 * This is the callback function called from vb2_qbuf() function
a2c25b44
MH		 205 * the buffer is prepared and user space virtual address is converted into
206 * physical address
207 */
13fc23d3 208static int vpbe_buffer_prepare(struct vb2_buffer *vb)
a2c25b44 209{
13fc23d3
LP		 210 struct vpbe_fh *fh = vb2_get_drv_priv(vb->vb2_queue);
211 struct vb2_queue *q = vb->vb2_queue;
a2c25b44
MH		 212 struct vpbe_layer *layer = fh->layer;
213 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
214 unsigned long addr;
a2c25b44
MH		 215
216 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
217 "vpbe_buffer_prepare\n");
218
13fc23d3
LP		 219 if (vb->state != VB2_BUF_STATE_ACTIVE &&
220 vb->state != VB2_BUF_STATE_PREPARED) {
221 vb2_set_plane_payload(vb, 0, layer->pix_fmt.sizeimage);
222 if (vb2_plane_vaddr(vb, 0) &&
223 vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
a2c25b44 224 return -EINVAL;
a2c25b44 225
13fc23d3 226 addr = vb2_dma_contig_plane_dma_addr(vb, 0);
a2c25b44
MH		 227 if (q->streaming) {
228 if (!IS_ALIGNED(addr, 8)) {
229 v4l2_err(&vpbe_dev->v4l2_dev,
230 "buffer_prepare:offset is \
231 not aligned to 32 bytes\n");
232 return -EINVAL;
233 }
234 }
a2c25b44
MH		 235 }
236 return 0;
237}
238
239/*
240 * vpbe_buffer_setup()
241 * This function allocates memory for the buffers
242 */
13fc23d3
LP		 243static int
244vpbe_buffer_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
245 unsigned int *nbuffers, unsigned int *nplanes,
246 unsigned int sizes[], void *alloc_ctxs[])
247
a2c25b44
MH		 248{
249 /* Get the file handle object and layer object */
13fc23d3 250 struct vpbe_fh *fh = vb2_get_drv_priv(vq);
a2c25b44
MH		 251 struct vpbe_layer *layer = fh->layer;
252 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
253
254 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_buffer_setup\n");
255
a2c25b44 256 /* Store number of buffers allocated in numbuffer member */
13fc23d3
LP		 257 if (*nbuffers < VPBE_DEFAULT_NUM_BUFS)
258 *nbuffers = layer->numbuffers = VPBE_DEFAULT_NUM_BUFS;
259
260 *nplanes = 1;
261 sizes[0] = layer->pix_fmt.sizeimage;
262 alloc_ctxs[0] = layer->alloc_ctx;
a2c25b44
MH		 263
264 return 0;
265}
266
267/*
268 * vpbe_buffer_queue()
269 * This function adds the buffer to DMA queue
270 */
13fc23d3 271static void vpbe_buffer_queue(struct vb2_buffer *vb)
a2c25b44
MH		 272{
273 /* Get the file handle object and layer object */
13fc23d3
LP		 274 struct vpbe_fh *fh = vb2_get_drv_priv(vb->vb2_queue);
275 struct vpbe_disp_buffer *buf = container_of(vb,
276 struct vpbe_disp_buffer, vb);
a2c25b44
MH		 277 struct vpbe_layer *layer = fh->layer;
278 struct vpbe_display *disp = fh->disp_dev;
279 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
280 unsigned long flags;
281
282 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
283 "vpbe_buffer_queue\n");
284
285 /* add the buffer to the DMA queue */
286 spin_lock_irqsave(&disp->dma_queue_lock, flags);
13fc23d3 287 list_add_tail(&buf->list, &layer->dma_queue);
a2c25b44 288 spin_unlock_irqrestore(&disp->dma_queue_lock, flags);
a2c25b44
MH		 289}
290
291/*
13fc23d3
LP		 292 * vpbe_buf_cleanup()
293 * This function is called from the vb2 layer to free memory allocated to
a2c25b44
MH		 294 * the buffers
295 */
13fc23d3 296static void vpbe_buf_cleanup(struct vb2_buffer *vb)
a2c25b44
MH		 297{
298 /* Get the file handle object and layer object */
13fc23d3 299 struct vpbe_fh *fh = vb2_get_drv_priv(vb->vb2_queue);
a2c25b44
MH		 300 struct vpbe_layer *layer = fh->layer;
301 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
13fc23d3
LP		 302 struct vpbe_disp_buffer *buf = container_of(vb,
303 struct vpbe_disp_buffer, vb);
304 unsigned long flags;
a2c25b44
MH		 305
306 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
13fc23d3 307 "vpbe_buf_cleanup\n");
a2c25b44 308
13fc23d3
LP		 309 spin_lock_irqsave(&layer->irqlock, flags);
310 if (vb->state == VB2_BUF_STATE_ACTIVE)
311 list_del_init(&buf->list);
312 spin_unlock_irqrestore(&layer->irqlock, flags);
313}
a2c25b44 314
13fc23d3
LP		 315static void vpbe_wait_prepare(struct vb2_queue *vq)
316{
317 struct vpbe_fh *fh = vb2_get_drv_priv(vq);
318 struct vpbe_layer *layer = fh->layer;
319
320 mutex_unlock(&layer->opslock);
a2c25b44
MH		 321}
322
13fc23d3
LP		 323static void vpbe_wait_finish(struct vb2_queue *vq)
324{
325 struct vpbe_fh *fh = vb2_get_drv_priv(vq);
326 struct vpbe_layer *layer = fh->layer;
327
328 mutex_lock(&layer->opslock);
329}
330
331static int vpbe_buffer_init(struct vb2_buffer *vb)
332{
333 struct vpbe_disp_buffer *buf = container_of(vb,
334 struct vpbe_disp_buffer, vb);
335
336 INIT_LIST_HEAD(&buf->list);
337 return 0;
338}
339
340static int vpbe_start_streaming(struct vb2_queue *vq, unsigned int count)
341{
342 struct vpbe_fh *fh = vb2_get_drv_priv(vq);
343 struct vpbe_layer *layer = fh->layer;
13fc23d3
LP		 344 int ret;
345
13fc23d3
LP		 346 /* Get the next frame from the buffer queue */
347 layer->next_frm = layer->cur_frm = list_entry(layer->dma_queue.next,
348 struct vpbe_disp_buffer, list);
349 /* Remove buffer from the buffer queue */
350 list_del(&layer->cur_frm->list);
351 /* Mark state of the current frame to active */
352 layer->cur_frm->vb.state = VB2_BUF_STATE_ACTIVE;
353 /* Initialize field_id and started member */
354 layer->field_id = 0;
355
356 /* Set parameters in OSD and VENC */
357 ret = vpbe_set_osd_display_params(fh->disp_dev, layer);
b1c090d0
LP		 358 if (ret < 0) {
359 struct vpbe_disp_buffer *buf, *tmp;
360
361 vb2_buffer_done(&layer->cur_frm->vb, VB2_BUF_STATE_QUEUED);
362 list_for_each_entry_safe(buf, tmp, &layer->dma_queue, list) {
363 list_del(&buf->list);
364 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_QUEUED);
365 }
366
13fc23d3 367 return ret;
b1c090d0 368 }
13fc23d3
LP		 369
370 /*
371 * if request format is yuv420 semiplanar, need to
372 * enable both video windows
373 */
374 layer->started = 1;
375 layer->layer_first_int = 1;
376
377 return ret;
378}
379
e37559b2 380static void vpbe_stop_streaming(struct vb2_queue *vq)
13fc23d3
LP		 381{
382 struct vpbe_fh *fh = vb2_get_drv_priv(vq);
383 struct vpbe_layer *layer = fh->layer;
b699f09d
LP		 384 struct vpbe_display *disp = fh->disp_dev;
385 unsigned long flags;
13fc23d3
LP		 386
387 if (!vb2_is_streaming(vq))
e37559b2 388 return;
13fc23d3
LP		 389
390 /* release all active buffers */
b699f09d
LP		 391 spin_lock_irqsave(&disp->dma_queue_lock, flags);
392 if (layer->cur_frm == layer->next_frm) {
393 vb2_buffer_done(&layer->cur_frm->vb, VB2_BUF_STATE_ERROR);
394 } else {
395 if (layer->cur_frm != NULL)
396 vb2_buffer_done(&layer->cur_frm->vb,
397 VB2_BUF_STATE_ERROR);
398 if (layer->next_frm != NULL)
399 vb2_buffer_done(&layer->next_frm->vb,
400 VB2_BUF_STATE_ERROR);
401 }
402
13fc23d3
LP		 403 while (!list_empty(&layer->dma_queue)) {
404 layer->next_frm = list_entry(layer->dma_queue.next,
405 struct vpbe_disp_buffer, list);
406 list_del(&layer->next_frm->list);
407 vb2_buffer_done(&layer->next_frm->vb, VB2_BUF_STATE_ERROR);
408 }
b699f09d 409 spin_unlock_irqrestore(&disp->dma_queue_lock, flags);
13fc23d3
LP		 410}
411
412static struct vb2_ops video_qops = {
413 .queue_setup = vpbe_buffer_queue_setup,
414 .wait_prepare = vpbe_wait_prepare,
415 .wait_finish = vpbe_wait_finish,
416 .buf_init = vpbe_buffer_init,
a2c25b44 417 .buf_prepare = vpbe_buffer_prepare,
13fc23d3
LP		 418 .start_streaming = vpbe_start_streaming,
419 .stop_streaming = vpbe_stop_streaming,
420 .buf_cleanup = vpbe_buf_cleanup,
a2c25b44 421 .buf_queue = vpbe_buffer_queue,
a2c25b44
MH		 422};
423
424static
425struct vpbe_layer*
426_vpbe_display_get_other_win_layer(struct vpbe_display *disp_dev,
427 struct vpbe_layer *layer)
428{
429 enum vpbe_display_device_id thiswin, otherwin;
430 thiswin = layer->device_id;
431
432 otherwin = (thiswin == VPBE_DISPLAY_DEVICE_0) ?
433 VPBE_DISPLAY_DEVICE_1 : VPBE_DISPLAY_DEVICE_0;
434 return disp_dev->dev[otherwin];
435}
436
437static int vpbe_set_osd_display_params(struct vpbe_display *disp_dev,
438 struct vpbe_layer *layer)
439{
440 struct osd_layer_config *cfg = &layer->layer_info.config;
441 struct osd_state *osd_device = disp_dev->osd_device;
442 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
443 unsigned long addr;
444 int ret;
445
13fc23d3 446 addr = vb2_dma_contig_plane_dma_addr(&layer->cur_frm->vb, 0);
a2c25b44
MH		 447 /* Set address in the display registers */
448 osd_device->ops.start_layer(osd_device,
449 layer->layer_info.id,
450 addr,
451 disp_dev->cbcr_ofst);
452
453 ret = osd_device->ops.enable_layer(osd_device,
454 layer->layer_info.id, 0);
455 if (ret < 0) {
456 v4l2_err(&vpbe_dev->v4l2_dev,
457 "Error in enabling osd window layer 0\n");
458 return -1;
459 }
460
461 /* Enable the window */
462 layer->layer_info.enable = 1;
463 if (cfg->pixfmt == PIXFMT_NV12) {
464 struct vpbe_layer *otherlayer =
465 _vpbe_display_get_other_win_layer(disp_dev, layer);
466
467 ret = osd_device->ops.enable_layer(osd_device,
468 otherlayer->layer_info.id, 1);
469 if (ret < 0) {
470 v4l2_err(&vpbe_dev->v4l2_dev,
471 "Error in enabling osd window layer 1\n");
472 return -1;
473 }
474 otherlayer->layer_info.enable = 1;
475 }
476 return 0;
477}
478
479static void
480vpbe_disp_calculate_scale_factor(struct vpbe_display *disp_dev,
481 struct vpbe_layer *layer,
482 int expected_xsize, int expected_ysize)
483{
484 struct display_layer_info *layer_info = &layer->layer_info;
485 struct v4l2_pix_format *pixfmt = &layer->pix_fmt;
486 struct osd_layer_config *cfg = &layer->layer_info.config;
487 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
488 int calculated_xsize;
489 int h_exp = 0;
490 int v_exp = 0;
491 int h_scale;
492 int v_scale;
493
36864082 494 v4l2_std_id standard_id = vpbe_dev->current_timings.std_id;
a2c25b44
MH		 495
496 /*
497 * Application initially set the image format. Current display
498 * size is obtained from the vpbe display controller. expected_xsize
499 * and expected_ysize are set through S_CROP ioctl. Based on this,
500 * driver will calculate the scale factors for vertical and
501 * horizontal direction so that the image is displayed scaled
502 * and expanded. Application uses expansion to display the image
503 * in a square pixel. Otherwise it is displayed using displays
504 * pixel aspect ratio.It is expected that application chooses
505 * the crop coordinates for cropped or scaled display. if crop
506 * size is less than the image size, it is displayed cropped or
507 * it is displayed scaled and/or expanded.
508 *
509 * to begin with, set the crop window same as expected. Later we
510 * will override with scaled window size
511 */
512
513 cfg->xsize = pixfmt->width;
514 cfg->ysize = pixfmt->height;
515 layer_info->h_zoom = ZOOM_X1; /* no horizontal zoom */
516 layer_info->v_zoom = ZOOM_X1; /* no horizontal zoom */
517 layer_info->h_exp = H_EXP_OFF; /* no horizontal zoom */
518 layer_info->v_exp = V_EXP_OFF; /* no horizontal zoom */
519
520 if (pixfmt->width < expected_xsize) {
521 h_scale = vpbe_dev->current_timings.xres / pixfmt->width;
522 if (h_scale < 2)
523 h_scale = 1;
524 else if (h_scale >= 4)
525 h_scale = 4;
526 else
527 h_scale = 2;
528 cfg->xsize *= h_scale;
529 if (cfg->xsize < expected_xsize) {
530 if ((standard_id & V4L2_STD_525_60) ||
531 (standard_id & V4L2_STD_625_50)) {
532 calculated_xsize = (cfg->xsize *
533 VPBE_DISPLAY_H_EXP_RATIO_N) /
534 VPBE_DISPLAY_H_EXP_RATIO_D;
535 if (calculated_xsize <= expected_xsize) {
536 h_exp = 1;
537 cfg->xsize = calculated_xsize;
538 }
539 }
540 }
541 if (h_scale == 2)
542 layer_info->h_zoom = ZOOM_X2;
543 else if (h_scale == 4)
544 layer_info->h_zoom = ZOOM_X4;
545 if (h_exp)
546 layer_info->h_exp = H_EXP_9_OVER_8;
547 } else {
548 /* no scaling, only cropping. Set display area to crop area */
549 cfg->xsize = expected_xsize;
550 }
551
552 if (pixfmt->height < expected_ysize) {
553 v_scale = expected_ysize / pixfmt->height;
554 if (v_scale < 2)
555 v_scale = 1;
556 else if (v_scale >= 4)
557 v_scale = 4;
558 else
559 v_scale = 2;
560 cfg->ysize *= v_scale;
561 if (cfg->ysize < expected_ysize) {
562 if ((standard_id & V4L2_STD_625_50)) {
563 calculated_xsize = (cfg->ysize *
564 VPBE_DISPLAY_V_EXP_RATIO_N) /
565 VPBE_DISPLAY_V_EXP_RATIO_D;
566 if (calculated_xsize <= expected_ysize) {
567 v_exp = 1;
568 cfg->ysize = calculated_xsize;
569 }
570 }
571 }
572 if (v_scale == 2)
573 layer_info->v_zoom = ZOOM_X2;
574 else if (v_scale == 4)
575 layer_info->v_zoom = ZOOM_X4;
576 if (v_exp)
577 layer_info->h_exp = V_EXP_6_OVER_5;
578 } else {
579 /* no scaling, only cropping. Set display area to crop area */
580 cfg->ysize = expected_ysize;
581 }
582 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
583 "crop display xsize = %d, ysize = %d\n",
584 cfg->xsize, cfg->ysize);
585}
586
587static void vpbe_disp_adj_position(struct vpbe_display *disp_dev,
588 struct vpbe_layer *layer,
589 int top, int left)
590{
591 struct osd_layer_config *cfg = &layer->layer_info.config;
592 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
593
594 cfg->xpos = min((unsigned int)left,
595 vpbe_dev->current_timings.xres - cfg->xsize);
596 cfg->ypos = min((unsigned int)top,
597 vpbe_dev->current_timings.yres - cfg->ysize);
598
599 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
600 "new xpos = %d, ypos = %d\n",
601 cfg->xpos, cfg->ypos);
602}
603
604static void vpbe_disp_check_window_params(struct vpbe_display *disp_dev,
605 struct v4l2_rect *c)
606{
607 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
608
609 if ((c->width == 0) ||
610 ((c->width + c->left) > vpbe_dev->current_timings.xres))
611 c->width = vpbe_dev->current_timings.xres - c->left;
612
613 if ((c->height == 0) || ((c->height + c->top) >
614 vpbe_dev->current_timings.yres))
615 c->height = vpbe_dev->current_timings.yres - c->top;
616
617 /* window height must be even for interlaced display */
618 if (vpbe_dev->current_timings.interlaced)
619 c->height &= (~0x01);
620
621}
622
623/**
624 * vpbe_try_format()
625 * If user application provides width and height, and have bytesperline set
626 * to zero, driver calculates bytesperline and sizeimage based on hardware
627 * limits.
628 */
629static int vpbe_try_format(struct vpbe_display *disp_dev,
630 struct v4l2_pix_format *pixfmt, int check)
631{
632 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
633 int min_height = 1;
634 int min_width = 32;
635 int max_height;
636 int max_width;
637 int bpp;
638
639 if ((pixfmt->pixelformat != V4L2_PIX_FMT_UYVY) &&
640 (pixfmt->pixelformat != V4L2_PIX_FMT_NV12))
641 /* choose default as V4L2_PIX_FMT_UYVY */
642 pixfmt->pixelformat = V4L2_PIX_FMT_UYVY;
643
644 /* Check the field format */
645 if ((pixfmt->field != V4L2_FIELD_INTERLACED) &&
646 (pixfmt->field != V4L2_FIELD_NONE)) {
647 if (vpbe_dev->current_timings.interlaced)
648 pixfmt->field = V4L2_FIELD_INTERLACED;
649 else
650 pixfmt->field = V4L2_FIELD_NONE;
651 }
652
653 if (pixfmt->field == V4L2_FIELD_INTERLACED)
654 min_height = 2;
655
656 if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
657 bpp = 1;
658 else
659 bpp = 2;
660
661 max_width = vpbe_dev->current_timings.xres;
662 max_height = vpbe_dev->current_timings.yres;
663
664 min_width /= bpp;
665
666 if (!pixfmt->width || (pixfmt->width < min_width) ||
667 (pixfmt->width > max_width)) {
668 pixfmt->width = vpbe_dev->current_timings.xres;
669 }
670
671 if (!pixfmt->height || (pixfmt->height < min_height) ||
672 (pixfmt->height > max_height)) {
673 pixfmt->height = vpbe_dev->current_timings.yres;
674 }
675
676 if (pixfmt->bytesperline < (pixfmt->width * bpp))
677 pixfmt->bytesperline = pixfmt->width * bpp;
678
679 /* Make the bytesperline 32 byte aligned */
680 pixfmt->bytesperline = ((pixfmt->width * bpp + 31) & ~31);
681
682 if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
683 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height +
684 (pixfmt->bytesperline * pixfmt->height >> 1);
685 else
686 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
687
688 return 0;
689}
690
a2c25b44
MH		 691static int vpbe_display_querycap(struct file *file, void *priv,
692 struct v4l2_capability *cap)
693{
694 struct vpbe_fh *fh = file->private_data;
695 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
696
697 cap->version = VPBE_DISPLAY_VERSION_CODE;
d046628d
LP		 698 cap->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
699 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
700 snprintf(cap->driver, sizeof(cap->driver), "%s",
701 dev_name(vpbe_dev->pdev));
702 snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
703 dev_name(vpbe_dev->pdev));
a2c25b44
MH		 704 strlcpy(cap->card, vpbe_dev->cfg->module_name, sizeof(cap->card));
705
706 return 0;
707}
708
709static int vpbe_display_s_crop(struct file *file, void *priv,
4f996594 710 const struct v4l2_crop *crop)
a2c25b44
MH		 711{
712 struct vpbe_fh *fh = file->private_data;
713 struct vpbe_layer *layer = fh->layer;
714 struct vpbe_display *disp_dev = fh->disp_dev;
715 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
716 struct osd_layer_config *cfg = &layer->layer_info.config;
717 struct osd_state *osd_device = disp_dev->osd_device;
fabc4e94 718 struct v4l2_rect rect = crop->c;
a2c25b44
MH		 719 int ret;
720
721 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
722 "VIDIOC_S_CROP, layer id = %d\n", layer->device_id);
723
724 if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
725 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buf type\n");
726 return -EINVAL;
727 }
728
fabc4e94
LP		 729 if (rect.top < 0)
730 rect.top = 0;
731 if (rect.left < 0)
732 rect.left = 0;
a2c25b44 733
fabc4e94 734 vpbe_disp_check_window_params(disp_dev, &rect);
a2c25b44
MH		 735
736 osd_device->ops.get_layer_config(osd_device,
737 layer->layer_info.id, cfg);
738
739 vpbe_disp_calculate_scale_factor(disp_dev, layer,
fabc4e94
LP		 740 rect.width,
741 rect.height);
742 vpbe_disp_adj_position(disp_dev, layer, rect.top,
743 rect.left);
a2c25b44
MH		 744 ret = osd_device->ops.set_layer_config(osd_device,
745 layer->layer_info.id, cfg);
746 if (ret < 0) {
747 v4l2_err(&vpbe_dev->v4l2_dev,
748 "Error in set layer config:\n");
749 return -EINVAL;
750 }
751
752 /* apply zooming and h or v expansion */
753 osd_device->ops.set_zoom(osd_device,
754 layer->layer_info.id,
755 layer->layer_info.h_zoom,
756 layer->layer_info.v_zoom);
757 ret = osd_device->ops.set_vid_expansion(osd_device,
758 layer->layer_info.h_exp,
759 layer->layer_info.v_exp);
760 if (ret < 0) {
761 v4l2_err(&vpbe_dev->v4l2_dev,
762 "Error in set vid expansion:\n");
763 return -EINVAL;
764 }
765
766 if ((layer->layer_info.h_zoom != ZOOM_X1) ||
767 (layer->layer_info.v_zoom != ZOOM_X1) ||
768 (layer->layer_info.h_exp != H_EXP_OFF) ||
769 (layer->layer_info.v_exp != V_EXP_OFF))
770 /* Enable expansion filter */
771 osd_device->ops.set_interpolation_filter(osd_device, 1);
772 else
773 osd_device->ops.set_interpolation_filter(osd_device, 0);
774
775 return 0;
776}
777
778static int vpbe_display_g_crop(struct file *file, void *priv,
779 struct v4l2_crop *crop)
780{
781 struct vpbe_fh *fh = file->private_data;
782 struct vpbe_layer *layer = fh->layer;
783 struct osd_layer_config *cfg = &layer->layer_info.config;
784 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
785 struct osd_state *osd_device = fh->disp_dev->osd_device;
786 struct v4l2_rect *rect = &crop->c;
a2c25b44
MH		 787
788 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
789 "VIDIOC_G_CROP, layer id = %d\n",
790 layer->device_id);
791
792 if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
793 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buf type\n");
e276f03b 794 return -EINVAL;
a2c25b44
MH		 795 }
796 osd_device->ops.get_layer_config(osd_device,
797 layer->layer_info.id, cfg);
798 rect->top = cfg->ypos;
799 rect->left = cfg->xpos;
800 rect->width = cfg->xsize;
801 rect->height = cfg->ysize;
802
803 return 0;
804}
805
806static int vpbe_display_cropcap(struct file *file, void *priv,
807 struct v4l2_cropcap *cropcap)
808{
809 struct vpbe_fh *fh = file->private_data;
810 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
811
812 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_CROPCAP ioctl\n");
813
814 cropcap->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
815 cropcap->bounds.left = 0;
816 cropcap->bounds.top = 0;
817 cropcap->bounds.width = vpbe_dev->current_timings.xres;
818 cropcap->bounds.height = vpbe_dev->current_timings.yres;
819 cropcap->pixelaspect = vpbe_dev->current_timings.aspect;
820 cropcap->defrect = cropcap->bounds;
821 return 0;
822}
823
824static int vpbe_display_g_fmt(struct file *file, void *priv,
825 struct v4l2_format *fmt)
826{
827 struct vpbe_fh *fh = file->private_data;
828 struct vpbe_layer *layer = fh->layer;
829 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
830
831 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
832 "VIDIOC_G_FMT, layer id = %d\n",
833 layer->device_id);
834
835 /* If buffer type is video output */
836 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
837 v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
838 return -EINVAL;
839 }
840 /* Fill in the information about format */
841 fmt->fmt.pix = layer->pix_fmt;
842
843 return 0;
844}
845
846static int vpbe_display_enum_fmt(struct file *file, void *priv,
847 struct v4l2_fmtdesc *fmt)
848{
849 struct vpbe_fh *fh = file->private_data;
850 struct vpbe_layer *layer = fh->layer;
851 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
852 unsigned int index = 0;
853
854 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
855 "VIDIOC_ENUM_FMT, layer id = %d\n",
856 layer->device_id);
857 if (fmt->index > 1) {
858 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid format index\n");
859 return -EINVAL;
860 }
861
862 /* Fill in the information about format */
863 index = fmt->index;
864 memset(fmt, 0, sizeof(*fmt));
865 fmt->index = index;
866 fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
867 if (index == 0) {
868 strcpy(fmt->description, "YUV 4:2:2 - UYVY");
869 fmt->pixelformat = V4L2_PIX_FMT_UYVY;
870 } else {
871 strcpy(fmt->description, "Y/CbCr 4:2:0");
872 fmt->pixelformat = V4L2_PIX_FMT_NV12;
873 }
874
875 return 0;
876}
877
878static int vpbe_display_s_fmt(struct file *file, void *priv,
879 struct v4l2_format *fmt)
880{
881 struct vpbe_fh *fh = file->private_data;
882 struct vpbe_layer *layer = fh->layer;
883 struct vpbe_display *disp_dev = fh->disp_dev;
884 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
885 struct osd_layer_config *cfg = &layer->layer_info.config;
886 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
887 struct osd_state *osd_device = disp_dev->osd_device;
888 int ret;
889
890 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
891 "VIDIOC_S_FMT, layer id = %d\n",
892 layer->device_id);
893
894 /* If streaming is started, return error */
895 if (layer->started) {
896 v4l2_err(&vpbe_dev->v4l2_dev, "Streaming is started\n");
897 return -EBUSY;
898 }
899 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
900 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "invalid type\n");
901 return -EINVAL;
902 }
903 /* Check for valid pixel format */
904 ret = vpbe_try_format(disp_dev, pixfmt, 1);
905 if (ret)
906 return ret;
907
908 /* YUV420 is requested, check availability of the
909 other video window */
910
911 layer->pix_fmt = *pixfmt;
bdea0d22
LP		 912 if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12) {
913 struct vpbe_layer *otherlayer;
914
915 otherlayer = _vpbe_display_get_other_win_layer(disp_dev, layer);
916 /* if other layer is available, only
917 * claim it, do not configure it
918 */
919 ret = osd_device->ops.request_layer(osd_device,
920 otherlayer->layer_info.id);
921 if (ret < 0) {
922 v4l2_err(&vpbe_dev->v4l2_dev,
923 "Display Manager failed to allocate layer\n");
924 return -EBUSY;
925 }
926 }
a2c25b44
MH		 927
928 /* Get osd layer config */
929 osd_device->ops.get_layer_config(osd_device,
930 layer->layer_info.id, cfg);
931 /* Store the pixel format in the layer object */
932 cfg->xsize = pixfmt->width;
933 cfg->ysize = pixfmt->height;
934 cfg->line_length = pixfmt->bytesperline;
935 cfg->ypos = 0;
936 cfg->xpos = 0;
937 cfg->interlaced = vpbe_dev->current_timings.interlaced;
938
939 if (V4L2_PIX_FMT_UYVY == pixfmt->pixelformat)
849325e3 940 cfg->pixfmt = PIXFMT_YCBCRI;
a2c25b44
MH		 941
942 /* Change of the default pixel format for both video windows */
943 if (V4L2_PIX_FMT_NV12 == pixfmt->pixelformat) {
944 struct vpbe_layer *otherlayer;
945 cfg->pixfmt = PIXFMT_NV12;
946 otherlayer = _vpbe_display_get_other_win_layer(disp_dev,
947 layer);
948 otherlayer->layer_info.config.pixfmt = PIXFMT_NV12;
949 }
950
951 /* Set the layer config in the osd window */
952 ret = osd_device->ops.set_layer_config(osd_device,
953 layer->layer_info.id, cfg);
954 if (ret < 0) {
955 v4l2_err(&vpbe_dev->v4l2_dev,
956 "Error in S_FMT params:\n");
957 return -EINVAL;
958 }
959
960 /* Readback and fill the local copy of current pix format */
961 osd_device->ops.get_layer_config(osd_device,
962 layer->layer_info.id, cfg);
963
964 return 0;
965}
966
967static int vpbe_display_try_fmt(struct file *file, void *priv,
968 struct v4l2_format *fmt)
969{
970 struct vpbe_fh *fh = file->private_data;
971 struct vpbe_display *disp_dev = fh->disp_dev;
972 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
973 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
974
975 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_TRY_FMT\n");
976
977 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
978 v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
979 return -EINVAL;
980 }
981
982 /* Check for valid field format */
983 return vpbe_try_format(disp_dev, pixfmt, 0);
984
985}
986
987/**
988 * vpbe_display_s_std - Set the given standard in the encoder
989 *
990 * Sets the standard if supported by the current encoder. Return the status.
991 * 0 - success & -EINVAL on error
992 */
993static int vpbe_display_s_std(struct file *file, void *priv,
314527ac 994 v4l2_std_id std_id)
a2c25b44
MH		 995{
996 struct vpbe_fh *fh = priv;
997 struct vpbe_layer *layer = fh->layer;
998 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
999 int ret;
1000
1001 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_STD\n");
1002
1003 /* If streaming is started, return error */
1004 if (layer->started) {
1005 v4l2_err(&vpbe_dev->v4l2_dev, "Streaming is started\n");
1006 return -EBUSY;
1007 }
1008 if (NULL != vpbe_dev->ops.s_std) {
1009 ret = vpbe_dev->ops.s_std(vpbe_dev, std_id);
1010 if (ret) {
1011 v4l2_err(&vpbe_dev->v4l2_dev,
1012 "Failed to set standard for sub devices\n");
1013 return -EINVAL;
1014 }
1015 } else {
1016 return -EINVAL;
1017 }
1018
1019 return 0;
1020}
1021
1022/**
1023 * vpbe_display_g_std - Get the standard in the current encoder
1024 *
1025 * Get the standard in the current encoder. Return the status. 0 - success
1026 * -EINVAL on error
1027 */
1028static int vpbe_display_g_std(struct file *file, void *priv,
1029 v4l2_std_id *std_id)
1030{
1031 struct vpbe_fh *fh = priv;
1032 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1033
1034 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_STD\n");
1035
1036 /* Get the standard from the current encoder */
1037 if (vpbe_dev->current_timings.timings_type & VPBE_ENC_STD) {
36864082 1038 *std_id = vpbe_dev->current_timings.std_id;
a2c25b44
MH		 1039 return 0;
1040 }
1041
1042 return -EINVAL;
1043}
1044
1045/**
1046 * vpbe_display_enum_output - enumerate outputs
1047 *
1048 * Enumerates the outputs available at the vpbe display
1049 * returns the status, -EINVAL if end of output list
1050 */
1051static int vpbe_display_enum_output(struct file *file, void *priv,
1052 struct v4l2_output *output)
1053{
1054 struct vpbe_fh *fh = priv;
1055 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1056 int ret;
1057
1058 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_OUTPUT\n");
1059
1060 /* Enumerate outputs */
1061
1062 if (NULL == vpbe_dev->ops.enum_outputs)
1063 return -EINVAL;
1064
1065 ret = vpbe_dev->ops.enum_outputs(vpbe_dev, output);
1066 if (ret) {
1067 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1068 "Failed to enumerate outputs\n");
1069 return -EINVAL;
1070 }
1071
1072 return 0;
1073}
1074
1075/**
1076 * vpbe_display_s_output - Set output to
1077 * the output specified by the index
1078 */
1079static int vpbe_display_s_output(struct file *file, void *priv,
1080 unsigned int i)
1081{
1082 struct vpbe_fh *fh = priv;
1083 struct vpbe_layer *layer = fh->layer;
1084 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1085 int ret;
1086
1087 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_OUTPUT\n");
1088 /* If streaming is started, return error */
1089 if (layer->started) {
1090 v4l2_err(&vpbe_dev->v4l2_dev, "Streaming is started\n");
1091 return -EBUSY;
1092 }
1093 if (NULL == vpbe_dev->ops.set_output)
1094 return -EINVAL;
1095
1096 ret = vpbe_dev->ops.set_output(vpbe_dev, i);
1097 if (ret) {
1098 v4l2_err(&vpbe_dev->v4l2_dev,
1099 "Failed to set output for sub devices\n");
1100 return -EINVAL;
1101 }
1102
1103 return 0;
1104}
1105
1106/**
1107 * vpbe_display_g_output - Get output from subdevice
1108 * for a given by the index
1109 */
1110static int vpbe_display_g_output(struct file *file, void *priv,
1111 unsigned int *i)
1112{
1113 struct vpbe_fh *fh = priv;
1114 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1115
1116 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_OUTPUT\n");
1117 /* Get the standard from the current encoder */
1118 *i = vpbe_dev->current_out_index;
1119
1120 return 0;
1121}
1122
1123/**
36864082 1124 * vpbe_display_enum_dv_timings - Enumerate the dv timings
a2c25b44 1125 *
36864082 1126 * enum the timings in the current encoder. Return the status. 0 - success
a2c25b44
MH		 1127 * -EINVAL on error
1128 */
1129static int
36864082
HV		 1130vpbe_display_enum_dv_timings(struct file *file, void *priv,
1131 struct v4l2_enum_dv_timings *timings)
a2c25b44
MH		 1132{
1133 struct vpbe_fh *fh = priv;
1134 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1135 int ret;
1136
36864082 1137 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_DV_TIMINGS\n");
a2c25b44
MH		 1138
1139 /* Enumerate outputs */
36864082 1140 if (NULL == vpbe_dev->ops.enum_dv_timings)
a2c25b44
MH		 1141 return -EINVAL;
1142
36864082 1143 ret = vpbe_dev->ops.enum_dv_timings(vpbe_dev, timings);
a2c25b44
MH		 1144 if (ret) {
1145 v4l2_err(&vpbe_dev->v4l2_dev,
36864082 1146 "Failed to enumerate dv timings info\n");
a2c25b44
MH		 1147 return -EINVAL;
1148 }
1149
1150 return 0;
1151}
1152
1153/**
36864082 1154 * vpbe_display_s_dv_timings - Set the dv timings
a2c25b44 1155 *
36864082 1156 * Set the timings in the current encoder. Return the status. 0 - success
a2c25b44
MH		 1157 * -EINVAL on error
1158 */
1159static int
36864082
HV		 1160vpbe_display_s_dv_timings(struct file *file, void *priv,
1161 struct v4l2_dv_timings *timings)
a2c25b44
MH		 1162{
1163 struct vpbe_fh *fh = priv;
1164 struct vpbe_layer *layer = fh->layer;
1165 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1166 int ret;
1167
36864082 1168 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_DV_TIMINGS\n");
a2c25b44
MH		 1169
1170
1171 /* If streaming is started, return error */
1172 if (layer->started) {
1173 v4l2_err(&vpbe_dev->v4l2_dev, "Streaming is started\n");
1174 return -EBUSY;
1175 }
1176
1177 /* Set the given standard in the encoder */
36864082 1178 if (!vpbe_dev->ops.s_dv_timings)
a2c25b44
MH		 1179 return -EINVAL;
1180
36864082 1181 ret = vpbe_dev->ops.s_dv_timings(vpbe_dev, timings);
a2c25b44
MH		 1182 if (ret) {
1183 v4l2_err(&vpbe_dev->v4l2_dev,
36864082 1184 "Failed to set the dv timings info\n");
a2c25b44
MH		 1185 return -EINVAL;
1186 }
a2c25b44
MH		 1187
1188 return 0;
1189}
1190
1191/**
36864082 1192 * vpbe_display_g_dv_timings - Set the dv timings
a2c25b44 1193 *
36864082 1194 * Get the timings in the current encoder. Return the status. 0 - success
a2c25b44
MH		 1195 * -EINVAL on error
1196 */
1197static int
36864082
HV		 1198vpbe_display_g_dv_timings(struct file *file, void *priv,
1199 struct v4l2_dv_timings *dv_timings)
a2c25b44
MH		 1200{
1201 struct vpbe_fh *fh = priv;
1202 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1203
36864082 1204 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_DV_TIMINGS\n");
a2c25b44
MH		 1205
1206 /* Get the given standard in the encoder */
1207
1208 if (vpbe_dev->current_timings.timings_type &
ef2d41b1 1209 VPBE_ENC_DV_TIMINGS) {
36864082 1210 *dv_timings = vpbe_dev->current_timings.dv_timings;
a2c25b44
MH		 1211 } else {
1212 return -EINVAL;
1213 }
1214
1215 return 0;
1216}
1217
1218static int vpbe_display_streamoff(struct file *file, void *priv,
1219 enum v4l2_buf_type buf_type)
1220{
1221 struct vpbe_fh *fh = file->private_data;
1222 struct vpbe_layer *layer = fh->layer;
1223 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1224 struct osd_state *osd_device = fh->disp_dev->osd_device;
1225 int ret;
1226
1227 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1228 "VIDIOC_STREAMOFF,layer id = %d\n",
1229 layer->device_id);
1230
1231 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != buf_type) {
1232 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buffer type\n");
1233 return -EINVAL;
1234 }
1235
1236 /* If io is allowed for this file handle, return error */
1237 if (!fh->io_allowed) {
1238 v4l2_err(&vpbe_dev->v4l2_dev, "No io_allowed\n");
1239 return -EACCES;
1240 }
1241
1242 /* If streaming is not started, return error */
1243 if (!layer->started) {
1244 v4l2_err(&vpbe_dev->v4l2_dev, "streaming not started in layer"
1245 " id = %d\n", layer->device_id);
1246 return -EINVAL;
1247 }
1248
1249 osd_device->ops.disable_layer(osd_device,
1250 layer->layer_info.id);
1251 layer->started = 0;
13fc23d3 1252 ret = vb2_streamoff(&layer->buffer_queue, buf_type);
a2c25b44
MH		 1253
1254 return ret;
1255}
1256
1257static int vpbe_display_streamon(struct file *file, void *priv,
1258 enum v4l2_buf_type buf_type)
1259{
1260 struct vpbe_fh *fh = file->private_data;
1261 struct vpbe_layer *layer = fh->layer;
1262 struct vpbe_display *disp_dev = fh->disp_dev;
1263 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1264 struct osd_state *osd_device = disp_dev->osd_device;
1265 int ret;
1266
1267 osd_device->ops.disable_layer(osd_device,
1268 layer->layer_info.id);
1269
1270 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_STREAMON, layerid=%d\n",
1271 layer->device_id);
1272
1273 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != buf_type) {
1274 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buffer type\n");
1275 return -EINVAL;
1276 }
1277
1278 /* If file handle is not allowed IO, return error */
1279 if (!fh->io_allowed) {
1280 v4l2_err(&vpbe_dev->v4l2_dev, "No io_allowed\n");
1281 return -EACCES;
1282 }
1283 /* If Streaming is already started, return error */
1284 if (layer->started) {
1285 v4l2_err(&vpbe_dev->v4l2_dev, "layer is already streaming\n");
1286 return -EBUSY;
1287 }
1288
1289 /*
13fc23d3 1290 * Call vb2_streamon to start streaming
a2c25b44
MH		 1291 * in videobuf
1292 */
13fc23d3 1293 ret = vb2_streamon(&layer->buffer_queue, buf_type);
a2c25b44
MH		 1294 if (ret) {
1295 v4l2_err(&vpbe_dev->v4l2_dev,
13fc23d3 1296 "error in vb2_streamon\n");
a2c25b44
MH		 1297 return ret;
1298 }
a2c25b44
MH		 1299 return ret;
1300}
1301
1302static int vpbe_display_dqbuf(struct file *file, void *priv,
1303 struct v4l2_buffer *buf)
1304{
1305 struct vpbe_fh *fh = file->private_data;
1306 struct vpbe_layer *layer = fh->layer;
1307 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1308 int ret;
1309
1310 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1311 "VIDIOC_DQBUF, layer id = %d\n",
1312 layer->device_id);
1313
1314 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != buf->type) {
1315 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buffer type\n");
1316 return -EINVAL;
1317 }
1318 /* If this file handle is not allowed to do IO, return error */
1319 if (!fh->io_allowed) {
1320 v4l2_err(&vpbe_dev->v4l2_dev, "No io_allowed\n");
1321 return -EACCES;
1322 }
1323 if (file->f_flags & O_NONBLOCK)
1324 /* Call videobuf_dqbuf for non blocking mode */
13fc23d3 1325 ret = vb2_dqbuf(&layer->buffer_queue, buf, 1);
a2c25b44
MH		 1326 else
1327 /* Call videobuf_dqbuf for blocking mode */
13fc23d3 1328 ret = vb2_dqbuf(&layer->buffer_queue, buf, 0);
a2c25b44
MH		 1329
1330 return ret;
1331}
1332
1333static int vpbe_display_qbuf(struct file *file, void *priv,
1334 struct v4l2_buffer *p)
1335{
1336 struct vpbe_fh *fh = file->private_data;
1337 struct vpbe_layer *layer = fh->layer;
1338 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1339
1340 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1341 "VIDIOC_QBUF, layer id = %d\n",
1342 layer->device_id);
1343
1344 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != p->type) {
1345 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buffer type\n");
1346 return -EINVAL;
1347 }
1348
1349 /* If this file handle is not allowed to do IO, return error */
1350 if (!fh->io_allowed) {
1351 v4l2_err(&vpbe_dev->v4l2_dev, "No io_allowed\n");
1352 return -EACCES;
1353 }
1354
13fc23d3 1355 return vb2_qbuf(&layer->buffer_queue, p);
a2c25b44
MH		 1356}
1357
1358static int vpbe_display_querybuf(struct file *file, void *priv,
1359 struct v4l2_buffer *buf)
1360{
1361 struct vpbe_fh *fh = file->private_data;
1362 struct vpbe_layer *layer = fh->layer;
1363 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
a2c25b44
MH		 1364
1365 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1366 "VIDIOC_QUERYBUF, layer id = %d\n",
1367 layer->device_id);
1368
1369 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != buf->type) {
1370 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buffer type\n");
1371 return -EINVAL;
1372 }
13fc23d3
LP		 1373 /* Call vb2_querybuf to get information */
1374 return vb2_querybuf(&layer->buffer_queue, buf);
a2c25b44
MH		 1375}
1376
1377static int vpbe_display_reqbufs(struct file *file, void *priv,
1378 struct v4l2_requestbuffers *req_buf)
1379{
1380 struct vpbe_fh *fh = file->private_data;
1381 struct vpbe_layer *layer = fh->layer;
1382 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
13fc23d3 1383 struct vb2_queue *q;
a2c25b44 1384 int ret;
a2c25b44
MH		 1385 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_reqbufs\n");
1386
1387 if (V4L2_BUF_TYPE_VIDEO_OUTPUT != req_buf->type) {
1388 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buffer type\n");
1389 return -EINVAL;
1390 }
1391
1392 /* If io users of the layer is not zero, return error */
1393 if (0 != layer->io_usrs) {
1394 v4l2_err(&vpbe_dev->v4l2_dev, "not IO user\n");
1395 return -EBUSY;
1396 }
1397 /* Initialize videobuf queue as per the buffer type */
13fc23d3 1398 layer->alloc_ctx = vb2_dma_contig_init_ctx(vpbe_dev->pdev);
4d22f108 1399 if (IS_ERR(layer->alloc_ctx)) {
13fc23d3 1400 v4l2_err(&vpbe_dev->v4l2_dev, "Failed to get the context\n");
4d22f108 1401 return PTR_ERR(layer->alloc_ctx);
13fc23d3
LP		 1402 }
1403 q = &layer->buffer_queue;
1404 memset(q, 0, sizeof(*q));
1405 q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1406 q->io_modes = VB2_MMAP | VB2_USERPTR;
1407 q->drv_priv = fh;
1408 q->ops = &video_qops;
1409 q->mem_ops = &vb2_dma_contig_memops;
1410 q->buf_struct_size = sizeof(struct vpbe_disp_buffer);
ade48681 1411 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
b3379c62 1412 q->min_buffers_needed = 1;
13fc23d3
LP		 1413
1414 ret = vb2_queue_init(q);
1415 if (ret) {
1416 v4l2_err(&vpbe_dev->v4l2_dev, "vb2_queue_init() failed\n");
1417 vb2_dma_contig_cleanup_ctx(layer->alloc_ctx);
1418 return ret;
1419 }
a2c25b44
MH		 1420 /* Set io allowed member of file handle to TRUE */
1421 fh->io_allowed = 1;
1422 /* Increment io usrs member of layer object to 1 */
1423 layer->io_usrs = 1;
1424 /* Store type of memory requested in layer object */
1425 layer->memory = req_buf->memory;
1426 /* Initialize buffer queue */
1427 INIT_LIST_HEAD(&layer->dma_queue);
1428 /* Allocate buffers */
13fc23d3 1429 return vb2_reqbufs(q, req_buf);
a2c25b44
MH		 1430}
1431
1432/*
1433 * vpbe_display_mmap()
1434 * It is used to map kernel space buffers into user spaces
1435 */
1436static int vpbe_display_mmap(struct file *filep, struct vm_area_struct *vma)
1437{
1438 /* Get the layer object and file handle object */
1439 struct vpbe_fh *fh = filep->private_data;
1440 struct vpbe_layer *layer = fh->layer;
1441 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
cbc807dc 1442 int ret;
a2c25b44
MH		 1443
1444 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_mmap\n");
1445
cbc807dc
HV		 1446 if (mutex_lock_interruptible(&layer->opslock))
1447 return -ERESTARTSYS;
13fc23d3 1448 ret = vb2_mmap(&layer->buffer_queue, vma);
cbc807dc
HV		 1449 mutex_unlock(&layer->opslock);
1450 return ret;
a2c25b44
MH		 1451}
1452
1453/* vpbe_display_poll(): It is used for select/poll system call
1454 */
1455static unsigned int vpbe_display_poll(struct file *filep, poll_table *wait)
1456{
1457 struct vpbe_fh *fh = filep->private_data;
1458 struct vpbe_layer *layer = fh->layer;
1459 struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
1460 unsigned int err = 0;
1461
1462 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_poll\n");
cbc807dc
HV		 1463 if (layer->started) {
1464 mutex_lock(&layer->opslock);
13fc23d3 1465 err = vb2_poll(&layer->buffer_queue, filep, wait);
cbc807dc
HV		 1466 mutex_unlock(&layer->opslock);
1467 }
a2c25b44
MH		 1468 return err;
1469}
1470
1471/*
1472 * vpbe_display_open()
1473 * It creates object of file handle structure and stores it in private_data
1474 * member of filepointer
1475 */
1476static int vpbe_display_open(struct file *file)
1477{
1478 struct vpbe_fh *fh = NULL;
1479 struct vpbe_layer *layer = video_drvdata(file);
3d7543b9 1480 struct video_device *vdev = video_devdata(file);
a2c25b44
MH		 1481 struct vpbe_display *disp_dev = layer->disp_dev;
1482 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1483 struct osd_state *osd_device = disp_dev->osd_device;
1484 int err;
1485
1486 /* Allocate memory for the file handle object */
1487 fh = kmalloc(sizeof(struct vpbe_fh), GFP_KERNEL);
1488 if (fh == NULL) {
1489 v4l2_err(&vpbe_dev->v4l2_dev,
1490 "unable to allocate memory for file handle object\n");
1491 return -ENOMEM;
1492 }
3d7543b9 1493 v4l2_fh_init(&fh->fh, vdev);
a2c25b44
MH		 1494 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1495 "vpbe display open plane = %d\n",
1496 layer->device_id);
1497
1498 /* store pointer to fh in private_data member of filep */
1499 file->private_data = fh;
1500 fh->layer = layer;
1501 fh->disp_dev = disp_dev;
1502
1503 if (!layer->usrs) {
cbc807dc
HV		 1504 if (mutex_lock_interruptible(&layer->opslock))
1505 return -ERESTARTSYS;
a2c25b44
MH		 1506 /* First claim the layer for this device */
1507 err = osd_device->ops.request_layer(osd_device,
1508 layer->layer_info.id);
cbc807dc 1509 mutex_unlock(&layer->opslock);
a2c25b44
MH		 1510 if (err < 0) {
1511 /* Couldn't get layer */
1512 v4l2_err(&vpbe_dev->v4l2_dev,
1513 "Display Manager failed to allocate layer\n");
1514 kfree(fh);
1515 return -EINVAL;
1516 }
1517 }
1518 /* Increment layer usrs counter */
1519 layer->usrs++;
1520 /* Set io_allowed member to false */
1521 fh->io_allowed = 0;
3d7543b9 1522 v4l2_fh_add(&fh->fh);
a2c25b44
MH		 1523 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1524 "vpbe display device opened successfully\n");
1525 return 0;
1526}
1527
1528/*
1529 * vpbe_display_release()
1530 * This function deletes buffer queue, frees the buffers and the davinci
1531 * display file * handle
1532 */
1533static int vpbe_display_release(struct file *file)
1534{
1535 /* Get the layer object and file handle object */
1536 struct vpbe_fh *fh = file->private_data;
1537 struct vpbe_layer *layer = fh->layer;
1538 struct osd_layer_config *cfg = &layer->layer_info.config;
1539 struct vpbe_display *disp_dev = fh->disp_dev;
1540 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1541 struct osd_state *osd_device = disp_dev->osd_device;
1542
1543 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_release\n");
1544
cbc807dc 1545 mutex_lock(&layer->opslock);
a2c25b44
MH		 1546 /* if this instance is doing IO */
1547 if (fh->io_allowed) {
1548 /* Reset io_usrs member of layer object */
1549 layer->io_usrs = 0;
1550
1551 osd_device->ops.disable_layer(osd_device,
1552 layer->layer_info.id);
1553 layer->started = 0;
1554 /* Free buffers allocated */
13fc23d3
LP		 1555 vb2_queue_release(&layer->buffer_queue);
1556 vb2_dma_contig_cleanup_ctx(&layer->buffer_queue);
a2c25b44
MH		 1557 }
1558
1559 /* Decrement layer usrs counter */
1560 layer->usrs--;
1561 /* If this file handle has initialize encoder device, reset it */
1562 if (!layer->usrs) {
1563 if (cfg->pixfmt == PIXFMT_NV12) {
1564 struct vpbe_layer *otherlayer;
1565 otherlayer =
1566 _vpbe_display_get_other_win_layer(disp_dev, layer);
1567 osd_device->ops.disable_layer(osd_device,
1568 otherlayer->layer_info.id);
1569 osd_device->ops.release_layer(osd_device,
1570 otherlayer->layer_info.id);
1571 }
1572 osd_device->ops.disable_layer(osd_device,
1573 layer->layer_info.id);
1574 osd_device->ops.release_layer(osd_device,
1575 layer->layer_info.id);
1576 }
3d7543b9
LP		 1577
1578 v4l2_fh_del(&fh->fh);
1579 v4l2_fh_exit(&fh->fh);
a2c25b44 1580 file->private_data = NULL;
cbc807dc 1581 mutex_unlock(&layer->opslock);
a2c25b44
MH		 1582
1583 /* Free memory allocated to file handle object */
1584 kfree(fh);
1585
1586 disp_dev->cbcr_ofst = 0;
1587
1588 return 0;
1589}
1590
a2c25b44
MH		 1591/* vpbe capture ioctl operations */
1592static const struct v4l2_ioctl_ops vpbe_ioctl_ops = {
1593 .vidioc_querycap = vpbe_display_querycap,
1594 .vidioc_g_fmt_vid_out = vpbe_display_g_fmt,
1595 .vidioc_enum_fmt_vid_out = vpbe_display_enum_fmt,
1596 .vidioc_s_fmt_vid_out = vpbe_display_s_fmt,
1597 .vidioc_try_fmt_vid_out = vpbe_display_try_fmt,
1598 .vidioc_reqbufs = vpbe_display_reqbufs,
1599 .vidioc_querybuf = vpbe_display_querybuf,
1600 .vidioc_qbuf = vpbe_display_qbuf,
1601 .vidioc_dqbuf = vpbe_display_dqbuf,
1602 .vidioc_streamon = vpbe_display_streamon,
1603 .vidioc_streamoff = vpbe_display_streamoff,
1604 .vidioc_cropcap = vpbe_display_cropcap,
1605 .vidioc_g_crop = vpbe_display_g_crop,
1606 .vidioc_s_crop = vpbe_display_s_crop,
a2c25b44
MH		 1607 .vidioc_s_std = vpbe_display_s_std,
1608 .vidioc_g_std = vpbe_display_g_std,
1609 .vidioc_enum_output = vpbe_display_enum_output,
1610 .vidioc_s_output = vpbe_display_s_output,
1611 .vidioc_g_output = vpbe_display_g_output,
36864082
HV		 1612 .vidioc_s_dv_timings = vpbe_display_s_dv_timings,
1613 .vidioc_g_dv_timings = vpbe_display_g_dv_timings,
1614 .vidioc_enum_dv_timings = vpbe_display_enum_dv_timings,
a2c25b44
MH		 1615};
1616
1617static struct v4l2_file_operations vpbe_fops = {
1618 .owner = THIS_MODULE,
1619 .open = vpbe_display_open,
1620 .release = vpbe_display_release,
1621 .unlocked_ioctl = video_ioctl2,
1622 .mmap = vpbe_display_mmap,
1623 .poll = vpbe_display_poll
1624};
1625
1626static int vpbe_device_get(struct device *dev, void *data)
1627{
1628 struct platform_device *pdev = to_platform_device(dev);
1629 struct vpbe_display *vpbe_disp = data;
1630
1631 if (strcmp("vpbe_controller", pdev->name) == 0)
1632 vpbe_disp->vpbe_dev = platform_get_drvdata(pdev);
1633
caff80c3 1634 if (strstr(pdev->name, "vpbe-osd") != NULL)
a2c25b44
MH		 1635 vpbe_disp->osd_device = platform_get_drvdata(pdev);
1636
1637 return 0;
1638}
1639
4c62e976
GKH		 1640static int init_vpbe_layer(int i, struct vpbe_display *disp_dev,
1641 struct platform_device *pdev)
a2c25b44
MH		 1642{
1643 struct vpbe_layer *vpbe_display_layer = NULL;
1644 struct video_device *vbd = NULL;
1645
1646 /* Allocate memory for four plane display objects */
1647
1648 disp_dev->dev[i] =
1649 kzalloc(sizeof(struct vpbe_layer), GFP_KERNEL);
1650
1651 /* If memory allocation fails, return error */
1652 if (!disp_dev->dev[i]) {
1653 printk(KERN_ERR "ran out of memory\n");
1654 return -ENOMEM;
1655 }
1656 spin_lock_init(&disp_dev->dev[i]->irqlock);
1657 mutex_init(&disp_dev->dev[i]->opslock);
1658
1659 /* Get the pointer to the layer object */
1660 vpbe_display_layer = disp_dev->dev[i];
1661 vbd = &vpbe_display_layer->video_dev;
1662 /* Initialize field of video device */
1663 vbd->release = video_device_release_empty;
1664 vbd->fops = &vpbe_fops;
1665 vbd->ioctl_ops = &vpbe_ioctl_ops;
1666 vbd->minor = -1;
1667 vbd->v4l2_dev = &disp_dev->vpbe_dev->v4l2_dev;
1668 vbd->lock = &vpbe_display_layer->opslock;
954f340f 1669 vbd->vfl_dir = VFL_DIR_TX;
a2c25b44
MH		 1670
1671 if (disp_dev->vpbe_dev->current_timings.timings_type &
142b66e8 1672 VPBE_ENC_STD)
a2c25b44 1673 vbd->tvnorms = (V4L2_STD_525_60 | V4L2_STD_625_50);
a2c25b44
MH		 1674
1675 snprintf(vbd->name, sizeof(vbd->name),
1676 "DaVinci_VPBE Display_DRIVER_V%d.%d.%d",
1677 (VPBE_DISPLAY_VERSION_CODE >> 16) & 0xff,
1678 (VPBE_DISPLAY_VERSION_CODE >> 8) & 0xff,
1679 (VPBE_DISPLAY_VERSION_CODE) & 0xff);
1680
1681 vpbe_display_layer->device_id = i;
1682
1683 vpbe_display_layer->layer_info.id =
1684 ((i == VPBE_DISPLAY_DEVICE_0) ? WIN_VID0 : WIN_VID1);
1685
a2c25b44
MH		 1686
1687 return 0;
1688}
1689
4c62e976
GKH		 1690static int register_device(struct vpbe_layer *vpbe_display_layer,
1691 struct vpbe_display *disp_dev,
1692 struct platform_device *pdev)
1693{
a2c25b44
MH		 1694 int err;
1695
1696 v4l2_info(&disp_dev->vpbe_dev->v4l2_dev,
1697 "Trying to register VPBE display device.\n");
1698 v4l2_info(&disp_dev->vpbe_dev->v4l2_dev,
1699 "layer=%x,layer->video_dev=%x\n",
1700 (int)vpbe_display_layer,
1701 (int)&vpbe_display_layer->video_dev);
1702
1703 err = video_register_device(&vpbe_display_layer->video_dev,
1704 VFL_TYPE_GRABBER,
1705 -1);
1706 if (err)
1707 return -ENODEV;
1708
1709 vpbe_display_layer->disp_dev = disp_dev;
1710 /* set the driver data in platform device */
1711 platform_set_drvdata(pdev, disp_dev);
1712 video_set_drvdata(&vpbe_display_layer->video_dev,
1713 vpbe_display_layer);
1714
1715 return 0;
1716}
1717
1718
1719
1720/*
1721 * vpbe_display_probe()
1722 * This function creates device entries by register itself to the V4L2 driver
1723 * and initializes fields of each layer objects
1724 */
4c62e976 1725static int vpbe_display_probe(struct platform_device *pdev)
a2c25b44
MH		 1726{
1727 struct vpbe_layer *vpbe_display_layer;
1728 struct vpbe_display *disp_dev;
1729 struct resource *res = NULL;
1730 int k;
1731 int i;
1732 int err;
1733 int irq;
1734
1735 printk(KERN_DEBUG "vpbe_display_probe\n");
1736 /* Allocate memory for vpbe_display */
6b55b451
LP		 1737 disp_dev = devm_kzalloc(&pdev->dev, sizeof(struct vpbe_display),
1738 GFP_KERNEL);
1739 if (!disp_dev)
a2c25b44 1740 return -ENOMEM;
a2c25b44
MH		 1741
1742 spin_lock_init(&disp_dev->dma_queue_lock);
1743 /*
1744 * Scan all the platform devices to find the vpbe
1745 * controller device and get the vpbe_dev object
1746 */
1747 err = bus_for_each_dev(&platform_bus_type, NULL, disp_dev,
1748 vpbe_device_get);
1749 if (err < 0)
1750 return err;
1751 /* Initialize the vpbe display controller */
1752 if (NULL != disp_dev->vpbe_dev->ops.initialize) {
1753 err = disp_dev->vpbe_dev->ops.initialize(&pdev->dev,
1754 disp_dev->vpbe_dev);
1755 if (err) {
1756 v4l2_err(&disp_dev->vpbe_dev->v4l2_dev,
1757 "Error initing vpbe\n");
1758 err = -ENOMEM;
1759 goto probe_out;
1760 }
1761 }
1762
1763 for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1764 if (init_vpbe_layer(i, disp_dev, pdev)) {
1765 err = -ENODEV;
1766 goto probe_out;
1767 }
1768 }
1769
1770 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1771 if (!res) {
1772 v4l2_err(&disp_dev->vpbe_dev->v4l2_dev,
1773 "Unable to get VENC interrupt resource\n");
1774 err = -ENODEV;
1775 goto probe_out;
1776 }
1777
1778 irq = res->start;
d8c279a0 1779 err = devm_request_irq(&pdev->dev, irq, venc_isr, 0,
6b55b451
LP		 1780 VPBE_DISPLAY_DRIVER, disp_dev);
1781 if (err) {
a2c25b44
MH		 1782 v4l2_err(&disp_dev->vpbe_dev->v4l2_dev,
1783 "Unable to request interrupt\n");
a2c25b44
MH		 1784 goto probe_out;
1785 }
1786
1787 for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1788 if (register_device(disp_dev->dev[i], disp_dev, pdev)) {
1789 err = -ENODEV;
6b55b451 1790 goto probe_out;
a2c25b44
MH		 1791 }
1792 }
1793
1794 printk(KERN_DEBUG "Successfully completed the probing of vpbe v4l2 device\n");
1795 return 0;
1796
49a0513c 1797probe_out:
a2c25b44
MH		 1798 for (k = 0; k < VPBE_DISPLAY_MAX_DEVICES; k++) {
1799 /* Get the pointer to the layer object */
1800 vpbe_display_layer = disp_dev->dev[k];
1801 /* Unregister video device */
1802 if (vpbe_display_layer) {
1803 video_unregister_device(
1804 &vpbe_display_layer->video_dev);
1805 kfree(disp_dev->dev[k]);
1806 }
1807 }
a2c25b44
MH		 1808 return err;
1809}
1810
1811/*
1812 * vpbe_display_remove()
1813 * It un-register hardware layer from V4L2 driver
1814 */
1815static int vpbe_display_remove(struct platform_device *pdev)
1816{
1817 struct vpbe_layer *vpbe_display_layer;
1818 struct vpbe_display *disp_dev = platform_get_drvdata(pdev);
1819 struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
a2c25b44
MH		 1820 int i;
1821
1822 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_remove\n");
1823
a2c25b44
MH		 1824 /* deinitialize the vpbe display controller */
1825 if (NULL != vpbe_dev->ops.deinitialize)
1826 vpbe_dev->ops.deinitialize(&pdev->dev, vpbe_dev);
1827 /* un-register device */
1828 for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1829 /* Get the pointer to the layer object */
1830 vpbe_display_layer = disp_dev->dev[i];
1831 /* Unregister video device */
1832 video_unregister_device(&vpbe_display_layer->video_dev);
1833
1834 }
1835 for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1836 kfree(disp_dev->dev[i]);
1837 disp_dev->dev[i] = NULL;
1838 }
1839
1840 return 0;
1841}
1842
1843static struct platform_driver vpbe_display_driver = {
1844 .driver = {
1845 .name = VPBE_DISPLAY_DRIVER,
1846 .owner = THIS_MODULE,
1847 .bus = &platform_bus_type,
1848 },
1849 .probe = vpbe_display_probe,
4c62e976 1850 .remove = vpbe_display_remove,
a2c25b44
MH		 1851};
1852
1d6629b1 1853module_platform_driver(vpbe_display_driver);
a2c25b44
MH		 1854
1855MODULE_DESCRIPTION("TI DM644x/DM355/DM365 VPBE Display controller");
1856MODULE_LICENSE("GPL");
1857MODULE_AUTHOR("Texas Instruments");
Linux 6.x block layer and io_uring tree(s)