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[media] davinci: vpif: missing unlocks on error
[deliverable/linux.git] / drivers / media / platform / davinci / vpif_capture.c
1 /*
2 * Copyright (C) 2009 Texas Instruments Inc
3 * Copyright (C) 2014 Lad, Prabhakar <prabhakar.csengg@gmail.com>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 *
19 * TODO : add support for VBI & HBI data service
20 * add static buffer allocation
21 */
22
23 #include <linux/module.h>
24 #include <linux/interrupt.h>
25 #include <linux/platform_device.h>
26 #include <linux/slab.h>
27
28 #include <media/v4l2-ioctl.h>
29
30 #include "vpif.h"
31 #include "vpif_capture.h"
32
33 MODULE_DESCRIPTION("TI DaVinci VPIF Capture driver");
34 MODULE_LICENSE("GPL");
35 MODULE_VERSION(VPIF_CAPTURE_VERSION);
36
37 #define vpif_err(fmt, arg...) v4l2_err(&vpif_obj.v4l2_dev, fmt, ## arg)
38 #define vpif_dbg(level, debug, fmt, arg...) \
39 v4l2_dbg(level, debug, &vpif_obj.v4l2_dev, fmt, ## arg)
40
41 static int debug = 1;
42 static u32 ch0_numbuffers = 3;
43 static u32 ch1_numbuffers = 3;
44 static u32 ch0_bufsize = 1920 * 1080 * 2;
45 static u32 ch1_bufsize = 720 * 576 * 2;
46
47 module_param(debug, int, 0644);
48 module_param(ch0_numbuffers, uint, S_IRUGO);
49 module_param(ch1_numbuffers, uint, S_IRUGO);
50 module_param(ch0_bufsize, uint, S_IRUGO);
51 module_param(ch1_bufsize, uint, S_IRUGO);
52
53 MODULE_PARM_DESC(debug, "Debug level 0-1");
54 MODULE_PARM_DESC(ch2_numbuffers, "Channel0 buffer count (default:3)");
55 MODULE_PARM_DESC(ch3_numbuffers, "Channel1 buffer count (default:3)");
56 MODULE_PARM_DESC(ch2_bufsize, "Channel0 buffer size (default:1920 x 1080 x 2)");
57 MODULE_PARM_DESC(ch3_bufsize, "Channel1 buffer size (default:720 x 576 x 2)");
58
59 static struct vpif_config_params config_params = {
60 .min_numbuffers = 3,
61 .numbuffers[0] = 3,
62 .numbuffers[1] = 3,
63 .min_bufsize[0] = 720 * 480 * 2,
64 .min_bufsize[1] = 720 * 480 * 2,
65 .channel_bufsize[0] = 1920 * 1080 * 2,
66 .channel_bufsize[1] = 720 * 576 * 2,
67 };
68
69 #define VPIF_DRIVER_NAME "vpif_capture"
70
71 /* global variables */
72 static struct vpif_device vpif_obj = { {NULL} };
73 static struct device *vpif_dev;
74 static void vpif_calculate_offsets(struct channel_obj *ch);
75 static void vpif_config_addr(struct channel_obj *ch, int muxmode);
76
77 static u8 channel_first_int[VPIF_NUMBER_OF_OBJECTS][2] = { {1, 1} };
78
79 /* Is set to 1 in case of SDTV formats, 2 in case of HDTV formats. */
80 static int ycmux_mode;
81
82 static inline struct vpif_cap_buffer *to_vpif_buffer(struct vb2_buffer *vb)
83 {
84 return container_of(vb, struct vpif_cap_buffer, vb);
85 }
86
87 /**
88 * vpif_buffer_prepare : callback function for buffer prepare
89 * @vb: ptr to vb2_buffer
90 *
91 * This is the callback function for buffer prepare when vb2_qbuf()
92 * function is called. The buffer is prepared and user space virtual address
93 * or user address is converted into physical address
94 */
95 static int vpif_buffer_prepare(struct vb2_buffer *vb)
96 {
97 struct vb2_queue *q = vb->vb2_queue;
98 struct channel_obj *ch = vb2_get_drv_priv(q);
99 struct common_obj *common;
100 unsigned long addr;
101
102 vpif_dbg(2, debug, "vpif_buffer_prepare\n");
103
104 common = &ch->common[VPIF_VIDEO_INDEX];
105
106 vb2_set_plane_payload(vb, 0, common->fmt.fmt.pix.sizeimage);
107 if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
108 return -EINVAL;
109
110 vb->v4l2_buf.field = common->fmt.fmt.pix.field;
111
112 addr = vb2_dma_contig_plane_dma_addr(vb, 0);
113 if (!IS_ALIGNED((addr + common->ytop_off), 8) ||
114 !IS_ALIGNED((addr + common->ybtm_off), 8) ||
115 !IS_ALIGNED((addr + common->ctop_off), 8) ||
116 !IS_ALIGNED((addr + common->cbtm_off), 8)) {
117 vpif_dbg(1, debug, "offset is not aligned\n");
118 return -EINVAL;
119 }
120
121 return 0;
122 }
123
124 /**
125 * vpif_buffer_queue_setup : Callback function for buffer setup.
126 * @vq: vb2_queue ptr
127 * @fmt: v4l2 format
128 * @nbuffers: ptr to number of buffers requested by application
129 * @nplanes:: contains number of distinct video planes needed to hold a frame
130 * @sizes[]: contains the size (in bytes) of each plane.
131 * @alloc_ctxs: ptr to allocation context
132 *
133 * This callback function is called when reqbuf() is called to adjust
134 * the buffer count and buffer size
135 */
136 static int vpif_buffer_queue_setup(struct vb2_queue *vq,
137 const struct v4l2_format *fmt,
138 unsigned int *nbuffers, unsigned int *nplanes,
139 unsigned int sizes[], void *alloc_ctxs[])
140 {
141 struct channel_obj *ch = vb2_get_drv_priv(vq);
142 struct common_obj *common;
143
144 common = &ch->common[VPIF_VIDEO_INDEX];
145
146 vpif_dbg(2, debug, "vpif_buffer_setup\n");
147
148 if (fmt && fmt->fmt.pix.sizeimage < common->fmt.fmt.pix.sizeimage)
149 return -EINVAL;
150
151 if (vq->num_buffers + *nbuffers < 3)
152 *nbuffers = 3 - vq->num_buffers;
153
154 *nplanes = 1;
155 sizes[0] = fmt ? fmt->fmt.pix.sizeimage : common->fmt.fmt.pix.sizeimage;
156 alloc_ctxs[0] = common->alloc_ctx;
157
158 /* Calculate the offset for Y and C data in the buffer */
159 vpif_calculate_offsets(ch);
160
161 return 0;
162 }
163
164 /**
165 * vpif_buffer_queue : Callback function to add buffer to DMA queue
166 * @vb: ptr to vb2_buffer
167 */
168 static void vpif_buffer_queue(struct vb2_buffer *vb)
169 {
170 struct channel_obj *ch = vb2_get_drv_priv(vb->vb2_queue);
171 struct vpif_cap_buffer *buf = to_vpif_buffer(vb);
172 struct common_obj *common;
173 unsigned long flags;
174
175 common = &ch->common[VPIF_VIDEO_INDEX];
176
177 vpif_dbg(2, debug, "vpif_buffer_queue\n");
178
179 spin_lock_irqsave(&common->irqlock, flags);
180 /* add the buffer to the DMA queue */
181 list_add_tail(&buf->list, &common->dma_queue);
182 spin_unlock_irqrestore(&common->irqlock, flags);
183 }
184
185 /**
186 * vpif_start_streaming : Starts the DMA engine for streaming
187 * @vb: ptr to vb2_buffer
188 * @count: number of buffers
189 */
190 static int vpif_start_streaming(struct vb2_queue *vq, unsigned int count)
191 {
192 struct vpif_capture_config *vpif_config_data =
193 vpif_dev->platform_data;
194 struct channel_obj *ch = vb2_get_drv_priv(vq);
195 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
196 struct vpif_params *vpif = &ch->vpifparams;
197 struct vpif_cap_buffer *buf, *tmp;
198 unsigned long addr, flags;
199 int ret;
200
201 spin_lock_irqsave(&common->irqlock, flags);
202
203 /* Initialize field_id */
204 ch->field_id = 0;
205
206 /* configure 1 or 2 channel mode */
207 if (vpif_config_data->setup_input_channel_mode) {
208 ret = vpif_config_data->
209 setup_input_channel_mode(vpif->std_info.ycmux_mode);
210 if (ret < 0) {
211 vpif_dbg(1, debug, "can't set vpif channel mode\n");
212 goto err;
213 }
214 }
215
216 ret = v4l2_subdev_call(ch->sd, video, s_stream, 1);
217 if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) {
218 vpif_dbg(1, debug, "stream on failed in subdev\n");
219 goto err;
220 }
221
222 /* Call vpif_set_params function to set the parameters and addresses */
223 ret = vpif_set_video_params(vpif, ch->channel_id);
224 if (ret < 0) {
225 vpif_dbg(1, debug, "can't set video params\n");
226 goto err;
227 }
228
229 ycmux_mode = ret;
230 vpif_config_addr(ch, ret);
231
232 /* Get the next frame from the buffer queue */
233 common->cur_frm = common->next_frm = list_entry(common->dma_queue.next,
234 struct vpif_cap_buffer, list);
235 /* Remove buffer from the buffer queue */
236 list_del(&common->cur_frm->list);
237 spin_unlock_irqrestore(&common->irqlock, flags);
238 /* Mark state of the current frame to active */
239 common->cur_frm->vb.state = VB2_BUF_STATE_ACTIVE;
240
241 addr = vb2_dma_contig_plane_dma_addr(&common->cur_frm->vb, 0);
242
243 common->set_addr(addr + common->ytop_off,
244 addr + common->ybtm_off,
245 addr + common->ctop_off,
246 addr + common->cbtm_off);
247
248 /**
249 * Set interrupt for both the fields in VPIF Register enable channel in
250 * VPIF register
251 */
252 channel_first_int[VPIF_VIDEO_INDEX][ch->channel_id] = 1;
253 if (VPIF_CHANNEL0_VIDEO == ch->channel_id) {
254 channel0_intr_assert();
255 channel0_intr_enable(1);
256 enable_channel0(1);
257 }
258 if (VPIF_CHANNEL1_VIDEO == ch->channel_id ||
259 ycmux_mode == 2) {
260 channel1_intr_assert();
261 channel1_intr_enable(1);
262 enable_channel1(1);
263 }
264
265 return 0;
266
267 err:
268 list_for_each_entry_safe(buf, tmp, &common->dma_queue, list) {
269 list_del(&buf->list);
270 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_QUEUED);
271 }
272 spin_unlock_irqrestore(&common->irqlock, flags);
273
274 return ret;
275 }
276
277 /**
278 * vpif_stop_streaming : Stop the DMA engine
279 * @vq: ptr to vb2_queue
280 *
281 * This callback stops the DMA engine and any remaining buffers
282 * in the DMA queue are released.
283 */
284 static void vpif_stop_streaming(struct vb2_queue *vq)
285 {
286 struct channel_obj *ch = vb2_get_drv_priv(vq);
287 struct common_obj *common;
288 unsigned long flags;
289 int ret;
290
291 common = &ch->common[VPIF_VIDEO_INDEX];
292
293 /* Disable channel as per its device type and channel id */
294 if (VPIF_CHANNEL0_VIDEO == ch->channel_id) {
295 enable_channel0(0);
296 channel0_intr_enable(0);
297 }
298 if (VPIF_CHANNEL1_VIDEO == ch->channel_id ||
299 ycmux_mode == 2) {
300 enable_channel1(0);
301 channel1_intr_enable(0);
302 }
303
304 ycmux_mode = 0;
305
306 ret = v4l2_subdev_call(ch->sd, video, s_stream, 0);
307 if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV)
308 vpif_dbg(1, debug, "stream off failed in subdev\n");
309
310 /* release all active buffers */
311 spin_lock_irqsave(&common->irqlock, flags);
312 if (common->cur_frm == common->next_frm) {
313 vb2_buffer_done(&common->cur_frm->vb, VB2_BUF_STATE_ERROR);
314 } else {
315 if (common->cur_frm != NULL)
316 vb2_buffer_done(&common->cur_frm->vb,
317 VB2_BUF_STATE_ERROR);
318 if (common->next_frm != NULL)
319 vb2_buffer_done(&common->next_frm->vb,
320 VB2_BUF_STATE_ERROR);
321 }
322
323 while (!list_empty(&common->dma_queue)) {
324 common->next_frm = list_entry(common->dma_queue.next,
325 struct vpif_cap_buffer, list);
326 list_del(&common->next_frm->list);
327 vb2_buffer_done(&common->next_frm->vb, VB2_BUF_STATE_ERROR);
328 }
329 spin_unlock_irqrestore(&common->irqlock, flags);
330 }
331
332 static struct vb2_ops video_qops = {
333 .queue_setup = vpif_buffer_queue_setup,
334 .buf_prepare = vpif_buffer_prepare,
335 .start_streaming = vpif_start_streaming,
336 .stop_streaming = vpif_stop_streaming,
337 .buf_queue = vpif_buffer_queue,
338 };
339
340 /**
341 * vpif_process_buffer_complete: process a completed buffer
342 * @common: ptr to common channel object
343 *
344 * This function time stamp the buffer and mark it as DONE. It also
345 * wake up any process waiting on the QUEUE and set the next buffer
346 * as current
347 */
348 static void vpif_process_buffer_complete(struct common_obj *common)
349 {
350 v4l2_get_timestamp(&common->cur_frm->vb.v4l2_buf.timestamp);
351 vb2_buffer_done(&common->cur_frm->vb,
352 VB2_BUF_STATE_DONE);
353 /* Make curFrm pointing to nextFrm */
354 common->cur_frm = common->next_frm;
355 }
356
357 /**
358 * vpif_schedule_next_buffer: set next buffer address for capture
359 * @common : ptr to common channel object
360 *
361 * This function will get next buffer from the dma queue and
362 * set the buffer address in the vpif register for capture.
363 * the buffer is marked active
364 */
365 static void vpif_schedule_next_buffer(struct common_obj *common)
366 {
367 unsigned long addr = 0;
368
369 spin_lock(&common->irqlock);
370 common->next_frm = list_entry(common->dma_queue.next,
371 struct vpif_cap_buffer, list);
372 /* Remove that buffer from the buffer queue */
373 list_del(&common->next_frm->list);
374 spin_unlock(&common->irqlock);
375 common->next_frm->vb.state = VB2_BUF_STATE_ACTIVE;
376 addr = vb2_dma_contig_plane_dma_addr(&common->next_frm->vb, 0);
377
378 /* Set top and bottom field addresses in VPIF registers */
379 common->set_addr(addr + common->ytop_off,
380 addr + common->ybtm_off,
381 addr + common->ctop_off,
382 addr + common->cbtm_off);
383 }
384
385 /**
386 * vpif_channel_isr : ISR handler for vpif capture
387 * @irq: irq number
388 * @dev_id: dev_id ptr
389 *
390 * It changes status of the captured buffer, takes next buffer from the queue
391 * and sets its address in VPIF registers
392 */
393 static irqreturn_t vpif_channel_isr(int irq, void *dev_id)
394 {
395 struct vpif_device *dev = &vpif_obj;
396 struct common_obj *common;
397 struct channel_obj *ch;
398 enum v4l2_field field;
399 int channel_id = 0;
400 int fid = -1, i;
401
402 channel_id = *(int *)(dev_id);
403 if (!vpif_intr_status(channel_id))
404 return IRQ_NONE;
405
406 ch = dev->dev[channel_id];
407
408 field = ch->common[VPIF_VIDEO_INDEX].fmt.fmt.pix.field;
409
410 for (i = 0; i < VPIF_NUMBER_OF_OBJECTS; i++) {
411 common = &ch->common[i];
412 /* skip If streaming is not started in this channel */
413 /* Check the field format */
414 if (1 == ch->vpifparams.std_info.frm_fmt) {
415 /* Progressive mode */
416 spin_lock(&common->irqlock);
417 if (list_empty(&common->dma_queue)) {
418 spin_unlock(&common->irqlock);
419 continue;
420 }
421 spin_unlock(&common->irqlock);
422
423 if (!channel_first_int[i][channel_id])
424 vpif_process_buffer_complete(common);
425
426 channel_first_int[i][channel_id] = 0;
427
428 vpif_schedule_next_buffer(common);
429
430
431 channel_first_int[i][channel_id] = 0;
432 } else {
433 /**
434 * Interlaced mode. If it is first interrupt, ignore
435 * it
436 */
437 if (channel_first_int[i][channel_id]) {
438 channel_first_int[i][channel_id] = 0;
439 continue;
440 }
441 if (0 == i) {
442 ch->field_id ^= 1;
443 /* Get field id from VPIF registers */
444 fid = vpif_channel_getfid(ch->channel_id);
445 if (fid != ch->field_id) {
446 /**
447 * If field id does not match stored
448 * field id, make them in sync
449 */
450 if (0 == fid)
451 ch->field_id = fid;
452 return IRQ_HANDLED;
453 }
454 }
455 /* device field id and local field id are in sync */
456 if (0 == fid) {
457 /* this is even field */
458 if (common->cur_frm == common->next_frm)
459 continue;
460
461 /* mark the current buffer as done */
462 vpif_process_buffer_complete(common);
463 } else if (1 == fid) {
464 /* odd field */
465 spin_lock(&common->irqlock);
466 if (list_empty(&common->dma_queue) ||
467 (common->cur_frm != common->next_frm)) {
468 spin_unlock(&common->irqlock);
469 continue;
470 }
471 spin_unlock(&common->irqlock);
472
473 vpif_schedule_next_buffer(common);
474 }
475 }
476 }
477 return IRQ_HANDLED;
478 }
479
480 /**
481 * vpif_update_std_info() - update standard related info
482 * @ch: ptr to channel object
483 *
484 * For a given standard selected by application, update values
485 * in the device data structures
486 */
487 static int vpif_update_std_info(struct channel_obj *ch)
488 {
489 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
490 struct vpif_params *vpifparams = &ch->vpifparams;
491 const struct vpif_channel_config_params *config;
492 struct vpif_channel_config_params *std_info = &vpifparams->std_info;
493 struct video_obj *vid_ch = &ch->video;
494 int index;
495
496 vpif_dbg(2, debug, "vpif_update_std_info\n");
497
498 for (index = 0; index < vpif_ch_params_count; index++) {
499 config = &vpif_ch_params[index];
500 if (config->hd_sd == 0) {
501 vpif_dbg(2, debug, "SD format\n");
502 if (config->stdid & vid_ch->stdid) {
503 memcpy(std_info, config, sizeof(*config));
504 break;
505 }
506 } else {
507 vpif_dbg(2, debug, "HD format\n");
508 if (!memcmp(&config->dv_timings, &vid_ch->dv_timings,
509 sizeof(vid_ch->dv_timings))) {
510 memcpy(std_info, config, sizeof(*config));
511 break;
512 }
513 }
514 }
515
516 /* standard not found */
517 if (index == vpif_ch_params_count)
518 return -EINVAL;
519
520 common->fmt.fmt.pix.width = std_info->width;
521 common->width = std_info->width;
522 common->fmt.fmt.pix.height = std_info->height;
523 common->height = std_info->height;
524 common->fmt.fmt.pix.bytesperline = std_info->width;
525 vpifparams->video_params.hpitch = std_info->width;
526 vpifparams->video_params.storage_mode = std_info->frm_fmt;
527
528 return 0;
529 }
530
531 /**
532 * vpif_calculate_offsets : This function calculates buffers offsets
533 * @ch : ptr to channel object
534 *
535 * This function calculates buffer offsets for Y and C in the top and
536 * bottom field
537 */
538 static void vpif_calculate_offsets(struct channel_obj *ch)
539 {
540 unsigned int hpitch, vpitch, sizeimage;
541 struct video_obj *vid_ch = &(ch->video);
542 struct vpif_params *vpifparams = &ch->vpifparams;
543 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
544 enum v4l2_field field = common->fmt.fmt.pix.field;
545
546 vpif_dbg(2, debug, "vpif_calculate_offsets\n");
547
548 if (V4L2_FIELD_ANY == field) {
549 if (vpifparams->std_info.frm_fmt)
550 vid_ch->buf_field = V4L2_FIELD_NONE;
551 else
552 vid_ch->buf_field = V4L2_FIELD_INTERLACED;
553 } else
554 vid_ch->buf_field = common->fmt.fmt.pix.field;
555
556 sizeimage = common->fmt.fmt.pix.sizeimage;
557
558 hpitch = common->fmt.fmt.pix.bytesperline;
559 vpitch = sizeimage / (hpitch * 2);
560
561 if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
562 (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) {
563 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
564 common->ytop_off = 0;
565 common->ybtm_off = hpitch;
566 common->ctop_off = sizeimage / 2;
567 common->cbtm_off = sizeimage / 2 + hpitch;
568 } else if (V4L2_FIELD_SEQ_TB == vid_ch->buf_field) {
569 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
570 common->ytop_off = 0;
571 common->ybtm_off = sizeimage / 4;
572 common->ctop_off = sizeimage / 2;
573 common->cbtm_off = common->ctop_off + sizeimage / 4;
574 } else if (V4L2_FIELD_SEQ_BT == vid_ch->buf_field) {
575 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
576 common->ybtm_off = 0;
577 common->ytop_off = sizeimage / 4;
578 common->cbtm_off = sizeimage / 2;
579 common->ctop_off = common->cbtm_off + sizeimage / 4;
580 }
581 if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
582 (V4L2_FIELD_INTERLACED == vid_ch->buf_field))
583 vpifparams->video_params.storage_mode = 1;
584 else
585 vpifparams->video_params.storage_mode = 0;
586
587 if (1 == vpifparams->std_info.frm_fmt)
588 vpifparams->video_params.hpitch =
589 common->fmt.fmt.pix.bytesperline;
590 else {
591 if ((field == V4L2_FIELD_ANY)
592 || (field == V4L2_FIELD_INTERLACED))
593 vpifparams->video_params.hpitch =
594 common->fmt.fmt.pix.bytesperline * 2;
595 else
596 vpifparams->video_params.hpitch =
597 common->fmt.fmt.pix.bytesperline;
598 }
599
600 ch->vpifparams.video_params.stdid = vpifparams->std_info.stdid;
601 }
602
603 /**
604 * vpif_config_format: configure default frame format in the device
605 * ch : ptr to channel object
606 */
607 static void vpif_config_format(struct channel_obj *ch)
608 {
609 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
610
611 vpif_dbg(2, debug, "vpif_config_format\n");
612
613 common->fmt.fmt.pix.field = V4L2_FIELD_ANY;
614 common->fmt.fmt.pix.sizeimage
615 = config_params.channel_bufsize[ch->channel_id];
616
617 if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER)
618 common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_SBGGR8;
619 else
620 common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUV422P;
621 common->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
622 }
623
624 /**
625 * vpif_get_default_field() - Get default field type based on interface
626 * @vpif_params - ptr to vpif params
627 */
628 static inline enum v4l2_field vpif_get_default_field(
629 struct vpif_interface *iface)
630 {
631 return (iface->if_type == VPIF_IF_RAW_BAYER) ? V4L2_FIELD_NONE :
632 V4L2_FIELD_INTERLACED;
633 }
634
635 /**
636 * vpif_check_format() - check given pixel format for compatibility
637 * @ch - channel ptr
638 * @pixfmt - Given pixel format
639 * @update - update the values as per hardware requirement
640 *
641 * Check the application pixel format for S_FMT and update the input
642 * values as per hardware limits for TRY_FMT. The default pixel and
643 * field format is selected based on interface type.
644 */
645 static int vpif_check_format(struct channel_obj *ch,
646 struct v4l2_pix_format *pixfmt,
647 int update)
648 {
649 struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]);
650 struct vpif_params *vpif_params = &ch->vpifparams;
651 enum v4l2_field field = pixfmt->field;
652 u32 sizeimage, hpitch, vpitch;
653 int ret = -EINVAL;
654
655 vpif_dbg(2, debug, "vpif_check_format\n");
656 /**
657 * first check for the pixel format. If if_type is Raw bayer,
658 * only V4L2_PIX_FMT_SBGGR8 format is supported. Otherwise only
659 * V4L2_PIX_FMT_YUV422P is supported
660 */
661 if (vpif_params->iface.if_type == VPIF_IF_RAW_BAYER) {
662 if (pixfmt->pixelformat != V4L2_PIX_FMT_SBGGR8) {
663 if (!update) {
664 vpif_dbg(2, debug, "invalid pix format\n");
665 goto exit;
666 }
667 pixfmt->pixelformat = V4L2_PIX_FMT_SBGGR8;
668 }
669 } else {
670 if (pixfmt->pixelformat != V4L2_PIX_FMT_YUV422P) {
671 if (!update) {
672 vpif_dbg(2, debug, "invalid pixel format\n");
673 goto exit;
674 }
675 pixfmt->pixelformat = V4L2_PIX_FMT_YUV422P;
676 }
677 }
678
679 if (!(VPIF_VALID_FIELD(field))) {
680 if (!update) {
681 vpif_dbg(2, debug, "invalid field format\n");
682 goto exit;
683 }
684 /**
685 * By default use FIELD_NONE for RAW Bayer capture
686 * and FIELD_INTERLACED for other interfaces
687 */
688 field = vpif_get_default_field(&vpif_params->iface);
689 } else if (field == V4L2_FIELD_ANY)
690 /* unsupported field. Use default */
691 field = vpif_get_default_field(&vpif_params->iface);
692
693 /* validate the hpitch */
694 hpitch = pixfmt->bytesperline;
695 if (hpitch < vpif_params->std_info.width) {
696 if (!update) {
697 vpif_dbg(2, debug, "invalid hpitch\n");
698 goto exit;
699 }
700 hpitch = vpif_params->std_info.width;
701 }
702
703 sizeimage = pixfmt->sizeimage;
704
705 vpitch = sizeimage / (hpitch * 2);
706
707 /* validate the vpitch */
708 if (vpitch < vpif_params->std_info.height) {
709 if (!update) {
710 vpif_dbg(2, debug, "Invalid vpitch\n");
711 goto exit;
712 }
713 vpitch = vpif_params->std_info.height;
714 }
715
716 /* Check for 8 byte alignment */
717 if (!ALIGN(hpitch, 8)) {
718 if (!update) {
719 vpif_dbg(2, debug, "invalid pitch alignment\n");
720 goto exit;
721 }
722 /* adjust to next 8 byte boundary */
723 hpitch = (((hpitch + 7) / 8) * 8);
724 }
725 /* if update is set, modify the bytesperline and sizeimage */
726 if (update) {
727 pixfmt->bytesperline = hpitch;
728 pixfmt->sizeimage = hpitch * vpitch * 2;
729 }
730 /**
731 * Image width and height is always based on current standard width and
732 * height
733 */
734 pixfmt->width = common->fmt.fmt.pix.width;
735 pixfmt->height = common->fmt.fmt.pix.height;
736 return 0;
737 exit:
738 return ret;
739 }
740
741 /**
742 * vpif_config_addr() - function to configure buffer address in vpif
743 * @ch - channel ptr
744 * @muxmode - channel mux mode
745 */
746 static void vpif_config_addr(struct channel_obj *ch, int muxmode)
747 {
748 struct common_obj *common;
749
750 vpif_dbg(2, debug, "vpif_config_addr\n");
751
752 common = &(ch->common[VPIF_VIDEO_INDEX]);
753
754 if (VPIF_CHANNEL1_VIDEO == ch->channel_id)
755 common->set_addr = ch1_set_videobuf_addr;
756 else if (2 == muxmode)
757 common->set_addr = ch0_set_videobuf_addr_yc_nmux;
758 else
759 common->set_addr = ch0_set_videobuf_addr;
760 }
761
762 /**
763 * vpif_input_to_subdev() - Maps input to sub device
764 * @vpif_cfg - global config ptr
765 * @chan_cfg - channel config ptr
766 * @input_index - Given input index from application
767 *
768 * lookup the sub device information for a given input index.
769 * we report all the inputs to application. inputs table also
770 * has sub device name for the each input
771 */
772 static int vpif_input_to_subdev(
773 struct vpif_capture_config *vpif_cfg,
774 struct vpif_capture_chan_config *chan_cfg,
775 int input_index)
776 {
777 struct vpif_subdev_info *subdev_info;
778 const char *subdev_name;
779 int i;
780
781 vpif_dbg(2, debug, "vpif_input_to_subdev\n");
782
783 subdev_name = chan_cfg->inputs[input_index].subdev_name;
784 if (subdev_name == NULL)
785 return -1;
786
787 /* loop through the sub device list to get the sub device info */
788 for (i = 0; i < vpif_cfg->subdev_count; i++) {
789 subdev_info = &vpif_cfg->subdev_info[i];
790 if (!strcmp(subdev_info->name, subdev_name))
791 return i;
792 }
793 return -1;
794 }
795
796 /**
797 * vpif_set_input() - Select an input
798 * @vpif_cfg - global config ptr
799 * @ch - channel
800 * @_index - Given input index from application
801 *
802 * Select the given input.
803 */
804 static int vpif_set_input(
805 struct vpif_capture_config *vpif_cfg,
806 struct channel_obj *ch,
807 int index)
808 {
809 struct vpif_capture_chan_config *chan_cfg =
810 &vpif_cfg->chan_config[ch->channel_id];
811 struct vpif_subdev_info *subdev_info = NULL;
812 struct v4l2_subdev *sd = NULL;
813 u32 input = 0, output = 0;
814 int sd_index;
815 int ret;
816
817 sd_index = vpif_input_to_subdev(vpif_cfg, chan_cfg, index);
818 if (sd_index >= 0) {
819 sd = vpif_obj.sd[sd_index];
820 subdev_info = &vpif_cfg->subdev_info[sd_index];
821 }
822
823 /* first setup input path from sub device to vpif */
824 if (sd && vpif_cfg->setup_input_path) {
825 ret = vpif_cfg->setup_input_path(ch->channel_id,
826 subdev_info->name);
827 if (ret < 0) {
828 vpif_dbg(1, debug, "couldn't setup input path for the" \
829 " sub device %s, for input index %d\n",
830 subdev_info->name, index);
831 return ret;
832 }
833 }
834
835 if (sd) {
836 input = chan_cfg->inputs[index].input_route;
837 output = chan_cfg->inputs[index].output_route;
838 ret = v4l2_subdev_call(sd, video, s_routing,
839 input, output, 0);
840 if (ret < 0 && ret != -ENOIOCTLCMD) {
841 vpif_dbg(1, debug, "Failed to set input\n");
842 return ret;
843 }
844 }
845 ch->input_idx = index;
846 ch->sd = sd;
847 /* copy interface parameters to vpif */
848 ch->vpifparams.iface = chan_cfg->vpif_if;
849
850 /* update tvnorms from the sub device input info */
851 ch->video_dev->tvnorms = chan_cfg->inputs[index].input.std;
852 return 0;
853 }
854
855 /**
856 * vpif_querystd() - querystd handler
857 * @file: file ptr
858 * @priv: file handle
859 * @std_id: ptr to std id
860 *
861 * This function is called to detect standard at the selected input
862 */
863 static int vpif_querystd(struct file *file, void *priv, v4l2_std_id *std_id)
864 {
865 struct video_device *vdev = video_devdata(file);
866 struct channel_obj *ch = video_get_drvdata(vdev);
867 int ret = 0;
868
869 vpif_dbg(2, debug, "vpif_querystd\n");
870
871 /* Call querystd function of decoder device */
872 ret = v4l2_subdev_call(ch->sd, video, querystd, std_id);
873
874 if (ret == -ENOIOCTLCMD || ret == -ENODEV)
875 return -ENODATA;
876 if (ret) {
877 vpif_dbg(1, debug, "Failed to query standard for sub devices\n");
878 return ret;
879 }
880
881 return 0;
882 }
883
884 /**
885 * vpif_g_std() - get STD handler
886 * @file: file ptr
887 * @priv: file handle
888 * @std_id: ptr to std id
889 */
890 static int vpif_g_std(struct file *file, void *priv, v4l2_std_id *std)
891 {
892 struct vpif_capture_config *config = vpif_dev->platform_data;
893 struct video_device *vdev = video_devdata(file);
894 struct channel_obj *ch = video_get_drvdata(vdev);
895 struct vpif_capture_chan_config *chan_cfg;
896 struct v4l2_input input;
897
898 vpif_dbg(2, debug, "vpif_g_std\n");
899
900 if (config->chan_config[ch->channel_id].inputs == NULL)
901 return -ENODATA;
902
903 chan_cfg = &config->chan_config[ch->channel_id];
904 input = chan_cfg->inputs[ch->input_idx].input;
905 if (input.capabilities != V4L2_IN_CAP_STD)
906 return -ENODATA;
907
908 *std = ch->video.stdid;
909 return 0;
910 }
911
912 /**
913 * vpif_s_std() - set STD handler
914 * @file: file ptr
915 * @priv: file handle
916 * @std_id: ptr to std id
917 */
918 static int vpif_s_std(struct file *file, void *priv, v4l2_std_id std_id)
919 {
920 struct vpif_capture_config *config = vpif_dev->platform_data;
921 struct video_device *vdev = video_devdata(file);
922 struct channel_obj *ch = video_get_drvdata(vdev);
923 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
924 struct vpif_capture_chan_config *chan_cfg;
925 struct v4l2_input input;
926 int ret;
927
928 vpif_dbg(2, debug, "vpif_s_std\n");
929
930 if (config->chan_config[ch->channel_id].inputs == NULL)
931 return -ENODATA;
932
933 chan_cfg = &config->chan_config[ch->channel_id];
934 input = chan_cfg->inputs[ch->input_idx].input;
935 if (input.capabilities != V4L2_IN_CAP_STD)
936 return -ENODATA;
937
938 if (vb2_is_busy(&common->buffer_queue))
939 return -EBUSY;
940
941 /* Call encoder subdevice function to set the standard */
942 ch->video.stdid = std_id;
943 memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings));
944
945 /* Get the information about the standard */
946 if (vpif_update_std_info(ch)) {
947 vpif_err("Error getting the standard info\n");
948 return -EINVAL;
949 }
950
951 /* Configure the default format information */
952 vpif_config_format(ch);
953
954 /* set standard in the sub device */
955 ret = v4l2_subdev_call(ch->sd, video, s_std, std_id);
956 if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) {
957 vpif_dbg(1, debug, "Failed to set standard for sub devices\n");
958 return ret;
959 }
960 return 0;
961 }
962
963 /**
964 * vpif_enum_input() - ENUMINPUT handler
965 * @file: file ptr
966 * @priv: file handle
967 * @input: ptr to input structure
968 */
969 static int vpif_enum_input(struct file *file, void *priv,
970 struct v4l2_input *input)
971 {
972
973 struct vpif_capture_config *config = vpif_dev->platform_data;
974 struct video_device *vdev = video_devdata(file);
975 struct channel_obj *ch = video_get_drvdata(vdev);
976 struct vpif_capture_chan_config *chan_cfg;
977
978 chan_cfg = &config->chan_config[ch->channel_id];
979
980 if (input->index >= chan_cfg->input_count) {
981 vpif_dbg(1, debug, "Invalid input index\n");
982 return -EINVAL;
983 }
984
985 memcpy(input, &chan_cfg->inputs[input->index].input,
986 sizeof(*input));
987 return 0;
988 }
989
990 /**
991 * vpif_g_input() - Get INPUT handler
992 * @file: file ptr
993 * @priv: file handle
994 * @index: ptr to input index
995 */
996 static int vpif_g_input(struct file *file, void *priv, unsigned int *index)
997 {
998 struct video_device *vdev = video_devdata(file);
999 struct channel_obj *ch = video_get_drvdata(vdev);
1000
1001 *index = ch->input_idx;
1002 return 0;
1003 }
1004
1005 /**
1006 * vpif_s_input() - Set INPUT handler
1007 * @file: file ptr
1008 * @priv: file handle
1009 * @index: input index
1010 */
1011 static int vpif_s_input(struct file *file, void *priv, unsigned int index)
1012 {
1013 struct vpif_capture_config *config = vpif_dev->platform_data;
1014 struct video_device *vdev = video_devdata(file);
1015 struct channel_obj *ch = video_get_drvdata(vdev);
1016 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1017 struct vpif_capture_chan_config *chan_cfg;
1018
1019 chan_cfg = &config->chan_config[ch->channel_id];
1020
1021 if (index >= chan_cfg->input_count)
1022 return -EINVAL;
1023
1024 if (vb2_is_busy(&common->buffer_queue))
1025 return -EBUSY;
1026
1027 return vpif_set_input(config, ch, index);
1028 }
1029
1030 /**
1031 * vpif_enum_fmt_vid_cap() - ENUM_FMT handler
1032 * @file: file ptr
1033 * @priv: file handle
1034 * @index: input index
1035 */
1036 static int vpif_enum_fmt_vid_cap(struct file *file, void *priv,
1037 struct v4l2_fmtdesc *fmt)
1038 {
1039 struct video_device *vdev = video_devdata(file);
1040 struct channel_obj *ch = video_get_drvdata(vdev);
1041
1042 if (fmt->index != 0) {
1043 vpif_dbg(1, debug, "Invalid format index\n");
1044 return -EINVAL;
1045 }
1046
1047 /* Fill in the information about format */
1048 if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER) {
1049 fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1050 strcpy(fmt->description, "Raw Mode -Bayer Pattern GrRBGb");
1051 fmt->pixelformat = V4L2_PIX_FMT_SBGGR8;
1052 } else {
1053 fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1054 strcpy(fmt->description, "YCbCr4:2:2 YC Planar");
1055 fmt->pixelformat = V4L2_PIX_FMT_YUV422P;
1056 }
1057 return 0;
1058 }
1059
1060 /**
1061 * vpif_try_fmt_vid_cap() - TRY_FMT handler
1062 * @file: file ptr
1063 * @priv: file handle
1064 * @fmt: ptr to v4l2 format structure
1065 */
1066 static int vpif_try_fmt_vid_cap(struct file *file, void *priv,
1067 struct v4l2_format *fmt)
1068 {
1069 struct video_device *vdev = video_devdata(file);
1070 struct channel_obj *ch = video_get_drvdata(vdev);
1071 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
1072
1073 return vpif_check_format(ch, pixfmt, 1);
1074 }
1075
1076
1077 /**
1078 * vpif_g_fmt_vid_cap() - Set INPUT handler
1079 * @file: file ptr
1080 * @priv: file handle
1081 * @fmt: ptr to v4l2 format structure
1082 */
1083 static int vpif_g_fmt_vid_cap(struct file *file, void *priv,
1084 struct v4l2_format *fmt)
1085 {
1086 struct video_device *vdev = video_devdata(file);
1087 struct channel_obj *ch = video_get_drvdata(vdev);
1088 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1089
1090 /* Check the validity of the buffer type */
1091 if (common->fmt.type != fmt->type)
1092 return -EINVAL;
1093
1094 /* Fill in the information about format */
1095 *fmt = common->fmt;
1096 return 0;
1097 }
1098
1099 /**
1100 * vpif_s_fmt_vid_cap() - Set FMT handler
1101 * @file: file ptr
1102 * @priv: file handle
1103 * @fmt: ptr to v4l2 format structure
1104 */
1105 static int vpif_s_fmt_vid_cap(struct file *file, void *priv,
1106 struct v4l2_format *fmt)
1107 {
1108 struct video_device *vdev = video_devdata(file);
1109 struct channel_obj *ch = video_get_drvdata(vdev);
1110 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1111 struct v4l2_pix_format *pixfmt;
1112 int ret = 0;
1113
1114 vpif_dbg(2, debug, "%s\n", __func__);
1115
1116 if (vb2_is_busy(&common->buffer_queue))
1117 return -EBUSY;
1118
1119 pixfmt = &fmt->fmt.pix;
1120 /* Check for valid field format */
1121 ret = vpif_check_format(ch, pixfmt, 0);
1122
1123 if (ret)
1124 return ret;
1125 /* store the format in the channel object */
1126 common->fmt = *fmt;
1127 return 0;
1128 }
1129
1130 /**
1131 * vpif_querycap() - QUERYCAP handler
1132 * @file: file ptr
1133 * @priv: file handle
1134 * @cap: ptr to v4l2_capability structure
1135 */
1136 static int vpif_querycap(struct file *file, void *priv,
1137 struct v4l2_capability *cap)
1138 {
1139 struct vpif_capture_config *config = vpif_dev->platform_data;
1140
1141 cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
1142 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
1143 strlcpy(cap->driver, VPIF_DRIVER_NAME, sizeof(cap->driver));
1144 snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
1145 dev_name(vpif_dev));
1146 strlcpy(cap->card, config->card_name, sizeof(cap->card));
1147
1148 return 0;
1149 }
1150
1151 /**
1152 * vpif_enum_dv_timings() - ENUM_DV_TIMINGS handler
1153 * @file: file ptr
1154 * @priv: file handle
1155 * @timings: input timings
1156 */
1157 static int
1158 vpif_enum_dv_timings(struct file *file, void *priv,
1159 struct v4l2_enum_dv_timings *timings)
1160 {
1161 struct vpif_capture_config *config = vpif_dev->platform_data;
1162 struct video_device *vdev = video_devdata(file);
1163 struct channel_obj *ch = video_get_drvdata(vdev);
1164 struct vpif_capture_chan_config *chan_cfg;
1165 struct v4l2_input input;
1166 int ret;
1167
1168 if (config->chan_config[ch->channel_id].inputs == NULL)
1169 return -ENODATA;
1170
1171 chan_cfg = &config->chan_config[ch->channel_id];
1172 input = chan_cfg->inputs[ch->input_idx].input;
1173 if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1174 return -ENODATA;
1175
1176 timings->pad = 0;
1177
1178 ret = v4l2_subdev_call(ch->sd, pad, enum_dv_timings, timings);
1179 if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1180 return -EINVAL;
1181
1182 return ret;
1183 }
1184
1185 /**
1186 * vpif_query_dv_timings() - QUERY_DV_TIMINGS handler
1187 * @file: file ptr
1188 * @priv: file handle
1189 * @timings: input timings
1190 */
1191 static int
1192 vpif_query_dv_timings(struct file *file, void *priv,
1193 struct v4l2_dv_timings *timings)
1194 {
1195 struct vpif_capture_config *config = vpif_dev->platform_data;
1196 struct video_device *vdev = video_devdata(file);
1197 struct channel_obj *ch = video_get_drvdata(vdev);
1198 struct vpif_capture_chan_config *chan_cfg;
1199 struct v4l2_input input;
1200 int ret;
1201
1202 if (config->chan_config[ch->channel_id].inputs == NULL)
1203 return -ENODATA;
1204
1205 chan_cfg = &config->chan_config[ch->channel_id];
1206 input = chan_cfg->inputs[ch->input_idx].input;
1207 if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1208 return -ENODATA;
1209
1210 ret = v4l2_subdev_call(ch->sd, video, query_dv_timings, timings);
1211 if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1212 return -ENODATA;
1213
1214 return ret;
1215 }
1216
1217 /**
1218 * vpif_s_dv_timings() - S_DV_TIMINGS handler
1219 * @file: file ptr
1220 * @priv: file handle
1221 * @timings: digital video timings
1222 */
1223 static int vpif_s_dv_timings(struct file *file, void *priv,
1224 struct v4l2_dv_timings *timings)
1225 {
1226 struct vpif_capture_config *config = vpif_dev->platform_data;
1227 struct video_device *vdev = video_devdata(file);
1228 struct channel_obj *ch = video_get_drvdata(vdev);
1229 struct vpif_params *vpifparams = &ch->vpifparams;
1230 struct vpif_channel_config_params *std_info = &vpifparams->std_info;
1231 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1232 struct video_obj *vid_ch = &ch->video;
1233 struct v4l2_bt_timings *bt = &vid_ch->dv_timings.bt;
1234 struct vpif_capture_chan_config *chan_cfg;
1235 struct v4l2_input input;
1236 int ret;
1237
1238 if (config->chan_config[ch->channel_id].inputs == NULL)
1239 return -ENODATA;
1240
1241 chan_cfg = &config->chan_config[ch->channel_id];
1242 input = chan_cfg->inputs[ch->input_idx].input;
1243 if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1244 return -ENODATA;
1245
1246 if (timings->type != V4L2_DV_BT_656_1120) {
1247 vpif_dbg(2, debug, "Timing type not defined\n");
1248 return -EINVAL;
1249 }
1250
1251 if (vb2_is_busy(&common->buffer_queue))
1252 return -EBUSY;
1253
1254 /* Configure subdevice timings, if any */
1255 ret = v4l2_subdev_call(ch->sd, video, s_dv_timings, timings);
1256 if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1257 ret = 0;
1258 if (ret < 0) {
1259 vpif_dbg(2, debug, "Error setting custom DV timings\n");
1260 return ret;
1261 }
1262
1263 if (!(timings->bt.width && timings->bt.height &&
1264 (timings->bt.hbackporch ||
1265 timings->bt.hfrontporch ||
1266 timings->bt.hsync) &&
1267 timings->bt.vfrontporch &&
1268 (timings->bt.vbackporch ||
1269 timings->bt.vsync))) {
1270 vpif_dbg(2, debug, "Timings for width, height, "
1271 "horizontal back porch, horizontal sync, "
1272 "horizontal front porch, vertical back porch, "
1273 "vertical sync and vertical back porch "
1274 "must be defined\n");
1275 return -EINVAL;
1276 }
1277
1278 vid_ch->dv_timings = *timings;
1279
1280 /* Configure video port timings */
1281
1282 std_info->eav2sav = V4L2_DV_BT_BLANKING_WIDTH(bt) - 8;
1283 std_info->sav2eav = bt->width;
1284
1285 std_info->l1 = 1;
1286 std_info->l3 = bt->vsync + bt->vbackporch + 1;
1287
1288 std_info->vsize = V4L2_DV_BT_FRAME_HEIGHT(bt);
1289 if (bt->interlaced) {
1290 if (bt->il_vbackporch || bt->il_vfrontporch || bt->il_vsync) {
1291 std_info->l5 = std_info->vsize/2 -
1292 (bt->vfrontporch - 1);
1293 std_info->l7 = std_info->vsize/2 + 1;
1294 std_info->l9 = std_info->l7 + bt->il_vsync +
1295 bt->il_vbackporch + 1;
1296 std_info->l11 = std_info->vsize -
1297 (bt->il_vfrontporch - 1);
1298 } else {
1299 vpif_dbg(2, debug, "Required timing values for "
1300 "interlaced BT format missing\n");
1301 return -EINVAL;
1302 }
1303 } else {
1304 std_info->l5 = std_info->vsize - (bt->vfrontporch - 1);
1305 }
1306 strncpy(std_info->name, "Custom timings BT656/1120", VPIF_MAX_NAME);
1307 std_info->width = bt->width;
1308 std_info->height = bt->height;
1309 std_info->frm_fmt = bt->interlaced ? 0 : 1;
1310 std_info->ycmux_mode = 0;
1311 std_info->capture_format = 0;
1312 std_info->vbi_supported = 0;
1313 std_info->hd_sd = 1;
1314 std_info->stdid = 0;
1315
1316 vid_ch->stdid = 0;
1317 return 0;
1318 }
1319
1320 /**
1321 * vpif_g_dv_timings() - G_DV_TIMINGS handler
1322 * @file: file ptr
1323 * @priv: file handle
1324 * @timings: digital video timings
1325 */
1326 static int vpif_g_dv_timings(struct file *file, void *priv,
1327 struct v4l2_dv_timings *timings)
1328 {
1329 struct vpif_capture_config *config = vpif_dev->platform_data;
1330 struct video_device *vdev = video_devdata(file);
1331 struct channel_obj *ch = video_get_drvdata(vdev);
1332 struct video_obj *vid_ch = &ch->video;
1333 struct vpif_capture_chan_config *chan_cfg;
1334 struct v4l2_input input;
1335
1336 if (config->chan_config[ch->channel_id].inputs == NULL)
1337 return -ENODATA;
1338
1339 chan_cfg = &config->chan_config[ch->channel_id];
1340 input = chan_cfg->inputs[ch->input_idx].input;
1341 if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1342 return -ENODATA;
1343
1344 *timings = vid_ch->dv_timings;
1345
1346 return 0;
1347 }
1348
1349 /*
1350 * vpif_log_status() - Status information
1351 * @file: file ptr
1352 * @priv: file handle
1353 *
1354 * Returns zero.
1355 */
1356 static int vpif_log_status(struct file *filep, void *priv)
1357 {
1358 /* status for sub devices */
1359 v4l2_device_call_all(&vpif_obj.v4l2_dev, 0, core, log_status);
1360
1361 return 0;
1362 }
1363
1364 /* vpif capture ioctl operations */
1365 static const struct v4l2_ioctl_ops vpif_ioctl_ops = {
1366 .vidioc_querycap = vpif_querycap,
1367 .vidioc_enum_fmt_vid_cap = vpif_enum_fmt_vid_cap,
1368 .vidioc_g_fmt_vid_cap = vpif_g_fmt_vid_cap,
1369 .vidioc_s_fmt_vid_cap = vpif_s_fmt_vid_cap,
1370 .vidioc_try_fmt_vid_cap = vpif_try_fmt_vid_cap,
1371
1372 .vidioc_enum_input = vpif_enum_input,
1373 .vidioc_s_input = vpif_s_input,
1374 .vidioc_g_input = vpif_g_input,
1375
1376 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1377 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1378 .vidioc_querybuf = vb2_ioctl_querybuf,
1379 .vidioc_qbuf = vb2_ioctl_qbuf,
1380 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1381 .vidioc_expbuf = vb2_ioctl_expbuf,
1382 .vidioc_streamon = vb2_ioctl_streamon,
1383 .vidioc_streamoff = vb2_ioctl_streamoff,
1384
1385 .vidioc_querystd = vpif_querystd,
1386 .vidioc_s_std = vpif_s_std,
1387 .vidioc_g_std = vpif_g_std,
1388
1389 .vidioc_enum_dv_timings = vpif_enum_dv_timings,
1390 .vidioc_query_dv_timings = vpif_query_dv_timings,
1391 .vidioc_s_dv_timings = vpif_s_dv_timings,
1392 .vidioc_g_dv_timings = vpif_g_dv_timings,
1393
1394 .vidioc_log_status = vpif_log_status,
1395 };
1396
1397 /* vpif file operations */
1398 static struct v4l2_file_operations vpif_fops = {
1399 .owner = THIS_MODULE,
1400 .open = v4l2_fh_open,
1401 .release = vb2_fop_release,
1402 .unlocked_ioctl = video_ioctl2,
1403 .mmap = vb2_fop_mmap,
1404 .poll = vb2_fop_poll
1405 };
1406
1407 /**
1408 * initialize_vpif() - Initialize vpif data structures
1409 *
1410 * Allocate memory for data structures and initialize them
1411 */
1412 static int initialize_vpif(void)
1413 {
1414 int err = 0, i, j;
1415 int free_channel_objects_index;
1416
1417 /* Default number of buffers should be 3 */
1418 if ((ch0_numbuffers > 0) &&
1419 (ch0_numbuffers < config_params.min_numbuffers))
1420 ch0_numbuffers = config_params.min_numbuffers;
1421 if ((ch1_numbuffers > 0) &&
1422 (ch1_numbuffers < config_params.min_numbuffers))
1423 ch1_numbuffers = config_params.min_numbuffers;
1424
1425 /* Set buffer size to min buffers size if it is invalid */
1426 if (ch0_bufsize < config_params.min_bufsize[VPIF_CHANNEL0_VIDEO])
1427 ch0_bufsize =
1428 config_params.min_bufsize[VPIF_CHANNEL0_VIDEO];
1429 if (ch1_bufsize < config_params.min_bufsize[VPIF_CHANNEL1_VIDEO])
1430 ch1_bufsize =
1431 config_params.min_bufsize[VPIF_CHANNEL1_VIDEO];
1432
1433 config_params.numbuffers[VPIF_CHANNEL0_VIDEO] = ch0_numbuffers;
1434 config_params.numbuffers[VPIF_CHANNEL1_VIDEO] = ch1_numbuffers;
1435 if (ch0_numbuffers) {
1436 config_params.channel_bufsize[VPIF_CHANNEL0_VIDEO]
1437 = ch0_bufsize;
1438 }
1439 if (ch1_numbuffers) {
1440 config_params.channel_bufsize[VPIF_CHANNEL1_VIDEO]
1441 = ch1_bufsize;
1442 }
1443
1444 /* Allocate memory for six channel objects */
1445 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1446 vpif_obj.dev[i] =
1447 kzalloc(sizeof(*vpif_obj.dev[i]), GFP_KERNEL);
1448 /* If memory allocation fails, return error */
1449 if (!vpif_obj.dev[i]) {
1450 free_channel_objects_index = i;
1451 err = -ENOMEM;
1452 goto vpif_init_free_channel_objects;
1453 }
1454 }
1455 return 0;
1456
1457 vpif_init_free_channel_objects:
1458 for (j = 0; j < free_channel_objects_index; j++)
1459 kfree(vpif_obj.dev[j]);
1460 return err;
1461 }
1462
1463 static int vpif_async_bound(struct v4l2_async_notifier *notifier,
1464 struct v4l2_subdev *subdev,
1465 struct v4l2_async_subdev *asd)
1466 {
1467 int i;
1468
1469 for (i = 0; i < vpif_obj.config->subdev_count; i++)
1470 if (!strcmp(vpif_obj.config->subdev_info[i].name,
1471 subdev->name)) {
1472 vpif_obj.sd[i] = subdev;
1473 return 0;
1474 }
1475
1476 return -EINVAL;
1477 }
1478
1479 static int vpif_probe_complete(void)
1480 {
1481 struct common_obj *common;
1482 struct video_device *vdev;
1483 struct channel_obj *ch;
1484 struct vb2_queue *q;
1485 int i, j, err, k;
1486
1487 for (j = 0; j < VPIF_CAPTURE_MAX_DEVICES; j++) {
1488 ch = vpif_obj.dev[j];
1489 ch->channel_id = j;
1490 common = &(ch->common[VPIF_VIDEO_INDEX]);
1491 spin_lock_init(&common->irqlock);
1492 mutex_init(&common->lock);
1493
1494 /* select input 0 */
1495 err = vpif_set_input(vpif_obj.config, ch, 0);
1496 if (err)
1497 goto probe_out;
1498
1499 /* Initialize vb2 queue */
1500 q = &common->buffer_queue;
1501 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1502 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1503 q->drv_priv = ch;
1504 q->ops = &video_qops;
1505 q->mem_ops = &vb2_dma_contig_memops;
1506 q->buf_struct_size = sizeof(struct vpif_cap_buffer);
1507 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1508 q->min_buffers_needed = 1;
1509 q->lock = &common->lock;
1510
1511 err = vb2_queue_init(q);
1512 if (err) {
1513 vpif_err("vpif_capture: vb2_queue_init() failed\n");
1514 goto probe_out;
1515 }
1516
1517 common->alloc_ctx = vb2_dma_contig_init_ctx(vpif_dev);
1518 if (IS_ERR(common->alloc_ctx)) {
1519 vpif_err("Failed to get the context\n");
1520 err = PTR_ERR(common->alloc_ctx);
1521 goto probe_out;
1522 }
1523
1524 INIT_LIST_HEAD(&common->dma_queue);
1525
1526 /* Initialize the video_device structure */
1527 vdev = ch->video_dev;
1528 strlcpy(vdev->name, VPIF_DRIVER_NAME, sizeof(vdev->name));
1529 vdev->release = video_device_release;
1530 vdev->fops = &vpif_fops;
1531 vdev->ioctl_ops = &vpif_ioctl_ops;
1532 vdev->v4l2_dev = &vpif_obj.v4l2_dev;
1533 vdev->vfl_dir = VFL_DIR_RX;
1534 vdev->queue = q;
1535 vdev->lock = &common->lock;
1536 set_bit(V4L2_FL_USE_FH_PRIO, &vdev->flags);
1537 video_set_drvdata(ch->video_dev, ch);
1538 err = video_register_device(vdev,
1539 VFL_TYPE_GRABBER, (j ? 1 : 0));
1540 if (err)
1541 goto probe_out;
1542 }
1543
1544 v4l2_info(&vpif_obj.v4l2_dev, "VPIF capture driver initialized\n");
1545 return 0;
1546
1547 probe_out:
1548 for (k = 0; k < j; k++) {
1549 /* Get the pointer to the channel object */
1550 ch = vpif_obj.dev[k];
1551 common = &ch->common[k];
1552 vb2_dma_contig_cleanup_ctx(common->alloc_ctx);
1553 /* Unregister video device */
1554 video_unregister_device(ch->video_dev);
1555 }
1556 kfree(vpif_obj.sd);
1557 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1558 ch = vpif_obj.dev[i];
1559 /* Note: does nothing if ch->video_dev == NULL */
1560 video_device_release(ch->video_dev);
1561 }
1562 v4l2_device_unregister(&vpif_obj.v4l2_dev);
1563
1564 return err;
1565 }
1566
1567 static int vpif_async_complete(struct v4l2_async_notifier *notifier)
1568 {
1569 return vpif_probe_complete();
1570 }
1571
1572 /**
1573 * vpif_probe : This function probes the vpif capture driver
1574 * @pdev: platform device pointer
1575 *
1576 * This creates device entries by register itself to the V4L2 driver and
1577 * initializes fields of each channel objects
1578 */
1579 static __init int vpif_probe(struct platform_device *pdev)
1580 {
1581 struct vpif_subdev_info *subdevdata;
1582 int i, j, err;
1583 int res_idx = 0;
1584 struct i2c_adapter *i2c_adap;
1585 struct channel_obj *ch;
1586 struct video_device *vfd;
1587 struct resource *res;
1588 int subdev_count;
1589
1590 vpif_dev = &pdev->dev;
1591
1592 err = initialize_vpif();
1593 if (err) {
1594 v4l2_err(vpif_dev->driver, "Error initializing vpif\n");
1595 return err;
1596 }
1597
1598 err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev);
1599 if (err) {
1600 v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n");
1601 return err;
1602 }
1603
1604 while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, res_idx))) {
1605 err = devm_request_irq(&pdev->dev, res->start, vpif_channel_isr,
1606 IRQF_SHARED, VPIF_DRIVER_NAME,
1607 (void *)(&vpif_obj.dev[res_idx]->
1608 channel_id));
1609 if (err) {
1610 err = -EINVAL;
1611 goto vpif_unregister;
1612 }
1613 res_idx++;
1614 }
1615
1616 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1617 /* Get the pointer to the channel object */
1618 ch = vpif_obj.dev[i];
1619 /* Allocate memory for video device */
1620 vfd = video_device_alloc();
1621 if (NULL == vfd) {
1622 for (j = 0; j < i; j++) {
1623 ch = vpif_obj.dev[j];
1624 video_device_release(ch->video_dev);
1625 }
1626 err = -ENOMEM;
1627 goto vpif_unregister;
1628 }
1629
1630 /* Set video_dev to the video device */
1631 ch->video_dev = vfd;
1632 }
1633
1634 vpif_obj.config = pdev->dev.platform_data;
1635
1636 subdev_count = vpif_obj.config->subdev_count;
1637 vpif_obj.sd = kzalloc(sizeof(struct v4l2_subdev *) * subdev_count,
1638 GFP_KERNEL);
1639 if (vpif_obj.sd == NULL) {
1640 vpif_err("unable to allocate memory for subdevice pointers\n");
1641 err = -ENOMEM;
1642 goto vpif_sd_error;
1643 }
1644
1645 if (!vpif_obj.config->asd_sizes) {
1646 i2c_adap = i2c_get_adapter(1);
1647 for (i = 0; i < subdev_count; i++) {
1648 subdevdata = &vpif_obj.config->subdev_info[i];
1649 vpif_obj.sd[i] =
1650 v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev,
1651 i2c_adap,
1652 &subdevdata->
1653 board_info,
1654 NULL);
1655
1656 if (!vpif_obj.sd[i]) {
1657 vpif_err("Error registering v4l2 subdevice\n");
1658 err = -ENODEV;
1659 goto probe_subdev_out;
1660 }
1661 v4l2_info(&vpif_obj.v4l2_dev,
1662 "registered sub device %s\n",
1663 subdevdata->name);
1664 }
1665 vpif_probe_complete();
1666 } else {
1667 vpif_obj.notifier.subdevs = vpif_obj.config->asd;
1668 vpif_obj.notifier.num_subdevs = vpif_obj.config->asd_sizes[0];
1669 vpif_obj.notifier.bound = vpif_async_bound;
1670 vpif_obj.notifier.complete = vpif_async_complete;
1671 err = v4l2_async_notifier_register(&vpif_obj.v4l2_dev,
1672 &vpif_obj.notifier);
1673 if (err) {
1674 vpif_err("Error registering async notifier\n");
1675 err = -EINVAL;
1676 goto probe_subdev_out;
1677 }
1678 }
1679
1680 return 0;
1681
1682 probe_subdev_out:
1683 /* free sub devices memory */
1684 kfree(vpif_obj.sd);
1685
1686 vpif_sd_error:
1687 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1688 ch = vpif_obj.dev[i];
1689 /* Note: does nothing if ch->video_dev == NULL */
1690 video_device_release(ch->video_dev);
1691 }
1692 vpif_unregister:
1693 v4l2_device_unregister(&vpif_obj.v4l2_dev);
1694
1695 return err;
1696 }
1697
1698 /**
1699 * vpif_remove() - driver remove handler
1700 * @device: ptr to platform device structure
1701 *
1702 * The vidoe device is unregistered
1703 */
1704 static int vpif_remove(struct platform_device *device)
1705 {
1706 struct common_obj *common;
1707 struct channel_obj *ch;
1708 int i;
1709
1710 v4l2_device_unregister(&vpif_obj.v4l2_dev);
1711
1712 kfree(vpif_obj.sd);
1713 /* un-register device */
1714 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1715 /* Get the pointer to the channel object */
1716 ch = vpif_obj.dev[i];
1717 common = &ch->common[i];
1718 vb2_dma_contig_cleanup_ctx(common->alloc_ctx);
1719 /* Unregister video device */
1720 video_unregister_device(ch->video_dev);
1721 kfree(vpif_obj.dev[i]);
1722 }
1723 return 0;
1724 }
1725
1726 #ifdef CONFIG_PM_SLEEP
1727 /**
1728 * vpif_suspend: vpif device suspend
1729 */
1730 static int vpif_suspend(struct device *dev)
1731 {
1732
1733 struct common_obj *common;
1734 struct channel_obj *ch;
1735 int i;
1736
1737 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1738 /* Get the pointer to the channel object */
1739 ch = vpif_obj.dev[i];
1740 common = &ch->common[VPIF_VIDEO_INDEX];
1741
1742 if (!vb2_is_streaming(&common->buffer_queue))
1743 continue;
1744
1745 mutex_lock(&common->lock);
1746 /* Disable channel */
1747 if (ch->channel_id == VPIF_CHANNEL0_VIDEO) {
1748 enable_channel0(0);
1749 channel0_intr_enable(0);
1750 }
1751 if (ch->channel_id == VPIF_CHANNEL1_VIDEO ||
1752 ycmux_mode == 2) {
1753 enable_channel1(0);
1754 channel1_intr_enable(0);
1755 }
1756 mutex_unlock(&common->lock);
1757 }
1758
1759 return 0;
1760 }
1761
1762 /*
1763 * vpif_resume: vpif device suspend
1764 */
1765 static int vpif_resume(struct device *dev)
1766 {
1767 struct common_obj *common;
1768 struct channel_obj *ch;
1769 int i;
1770
1771 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1772 /* Get the pointer to the channel object */
1773 ch = vpif_obj.dev[i];
1774 common = &ch->common[VPIF_VIDEO_INDEX];
1775
1776 if (!vb2_is_streaming(&common->buffer_queue))
1777 continue;
1778
1779 mutex_lock(&common->lock);
1780 /* Enable channel */
1781 if (ch->channel_id == VPIF_CHANNEL0_VIDEO) {
1782 enable_channel0(1);
1783 channel0_intr_enable(1);
1784 }
1785 if (ch->channel_id == VPIF_CHANNEL1_VIDEO ||
1786 ycmux_mode == 2) {
1787 enable_channel1(1);
1788 channel1_intr_enable(1);
1789 }
1790 mutex_unlock(&common->lock);
1791 }
1792
1793 return 0;
1794 }
1795 #endif
1796
1797 static SIMPLE_DEV_PM_OPS(vpif_pm_ops, vpif_suspend, vpif_resume);
1798
1799 static __refdata struct platform_driver vpif_driver = {
1800 .driver = {
1801 .name = VPIF_DRIVER_NAME,
1802 .owner = THIS_MODULE,
1803 .pm = &vpif_pm_ops,
1804 },
1805 .probe = vpif_probe,
1806 .remove = vpif_remove,
1807 };
1808
1809 module_platform_driver(vpif_driver);
Linux kernel - Deliverables
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