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Input: xpad - add support for Xbox1 PDP Camo series gamepad
[linux/fpc-iii.git] / drivers / media / platform / davinci / vpif_capture.c
blob5104cc0ee40e35ca2b973efc9ebad4b2a71bdd6e
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
43 module_param(debug, int, 0644);
44
45 MODULE_PARM_DESC(debug, "Debug level 0-1");
46
47 #define VPIF_DRIVER_NAME "vpif_capture"
48
49 /* global variables */
50 static struct vpif_device vpif_obj = { {NULL} };
51 static struct device *vpif_dev;
52 static void vpif_calculate_offsets(struct channel_obj *ch);
53 static void vpif_config_addr(struct channel_obj *ch, int muxmode);
54
55 static u8 channel_first_int[VPIF_NUMBER_OF_OBJECTS][2] = { {1, 1} };
56
57 /* Is set to 1 in case of SDTV formats, 2 in case of HDTV formats. */
58 static int ycmux_mode;
59
60 static inline
61 struct vpif_cap_buffer *to_vpif_buffer(struct vb2_v4l2_buffer *vb)
62 {
63 return container_of(vb, struct vpif_cap_buffer, vb);
64 }
65
66 /**
67 * vpif_buffer_prepare : callback function for buffer prepare
68 * @vb: ptr to vb2_buffer
69 *
70 * This is the callback function for buffer prepare when vb2_qbuf()
71 * function is called. The buffer is prepared and user space virtual address
72 * or user address is converted into physical address
73 */
74 static int vpif_buffer_prepare(struct vb2_buffer *vb)
75 {
76 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
77 struct vb2_queue *q = vb->vb2_queue;
78 struct channel_obj *ch = vb2_get_drv_priv(q);
79 struct common_obj *common;
80 unsigned long addr;
81
82 vpif_dbg(2, debug, "vpif_buffer_prepare\n");
83
84 common = &ch->common[VPIF_VIDEO_INDEX];
85
86 vb2_set_plane_payload(vb, 0, common->fmt.fmt.pix.sizeimage);
87 if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
88 return -EINVAL;
89
90 vbuf->field = common->fmt.fmt.pix.field;
91
92 addr = vb2_dma_contig_plane_dma_addr(vb, 0);
93 if (!IS_ALIGNED((addr + common->ytop_off), 8) ||
94 !IS_ALIGNED((addr + common->ybtm_off), 8) ||
95 !IS_ALIGNED((addr + common->ctop_off), 8) ||
96 !IS_ALIGNED((addr + common->cbtm_off), 8)) {
97 vpif_dbg(1, debug, "offset is not aligned\n");
98 return -EINVAL;
99 }
100
101 return 0;
102 }
103
104 /**
105 * vpif_buffer_queue_setup : Callback function for buffer setup.
106 * @vq: vb2_queue ptr
107 * @nbuffers: ptr to number of buffers requested by application
108 * @nplanes:: contains number of distinct video planes needed to hold a frame
109 * @sizes[]: contains the size (in bytes) of each plane.
110 * @alloc_devs: ptr to allocation context
111 *
112 * This callback function is called when reqbuf() is called to adjust
113 * the buffer count and buffer size
114 */
115 static int vpif_buffer_queue_setup(struct vb2_queue *vq,
116 unsigned int *nbuffers, unsigned int *nplanes,
117 unsigned int sizes[], struct device *alloc_devs[])
118 {
119 struct channel_obj *ch = vb2_get_drv_priv(vq);
120 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
121 unsigned size = common->fmt.fmt.pix.sizeimage;
122
123 vpif_dbg(2, debug, "vpif_buffer_setup\n");
124
125 if (*nplanes) {
126 if (sizes[0] < size)
127 return -EINVAL;
128 size = sizes[0];
129 }
130
131 if (vq->num_buffers + *nbuffers < 3)
132 *nbuffers = 3 - vq->num_buffers;
133
134 *nplanes = 1;
135 sizes[0] = size;
136
137 /* Calculate the offset for Y and C data in the buffer */
138 vpif_calculate_offsets(ch);
139
140 return 0;
141 }
142
143 /**
144 * vpif_buffer_queue : Callback function to add buffer to DMA queue
145 * @vb: ptr to vb2_buffer
146 */
147 static void vpif_buffer_queue(struct vb2_buffer *vb)
148 {
149 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
150 struct channel_obj *ch = vb2_get_drv_priv(vb->vb2_queue);
151 struct vpif_cap_buffer *buf = to_vpif_buffer(vbuf);
152 struct common_obj *common;
153 unsigned long flags;
154
155 common = &ch->common[VPIF_VIDEO_INDEX];
156
157 vpif_dbg(2, debug, "vpif_buffer_queue\n");
158
159 spin_lock_irqsave(&common->irqlock, flags);
160 /* add the buffer to the DMA queue */
161 list_add_tail(&buf->list, &common->dma_queue);
162 spin_unlock_irqrestore(&common->irqlock, flags);
163 }
164
165 /**
166 * vpif_start_streaming : Starts the DMA engine for streaming
167 * @vb: ptr to vb2_buffer
168 * @count: number of buffers
169 */
170 static int vpif_start_streaming(struct vb2_queue *vq, unsigned int count)
171 {
172 struct vpif_capture_config *vpif_config_data =
173 vpif_dev->platform_data;
174 struct channel_obj *ch = vb2_get_drv_priv(vq);
175 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
176 struct vpif_params *vpif = &ch->vpifparams;
177 struct vpif_cap_buffer *buf, *tmp;
178 unsigned long addr, flags;
179 int ret;
180
181 spin_lock_irqsave(&common->irqlock, flags);
182
183 /* Initialize field_id */
184 ch->field_id = 0;
185
186 /* configure 1 or 2 channel mode */
187 if (vpif_config_data->setup_input_channel_mode) {
188 ret = vpif_config_data->
189 setup_input_channel_mode(vpif->std_info.ycmux_mode);
190 if (ret < 0) {
191 vpif_dbg(1, debug, "can't set vpif channel mode\n");
192 goto err;
193 }
194 }
195
196 ret = v4l2_subdev_call(ch->sd, video, s_stream, 1);
197 if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) {
198 vpif_dbg(1, debug, "stream on failed in subdev\n");
199 goto err;
200 }
201
202 /* Call vpif_set_params function to set the parameters and addresses */
203 ret = vpif_set_video_params(vpif, ch->channel_id);
204 if (ret < 0) {
205 vpif_dbg(1, debug, "can't set video params\n");
206 goto err;
207 }
208
209 ycmux_mode = ret;
210 vpif_config_addr(ch, ret);
211
212 /* Get the next frame from the buffer queue */
213 common->cur_frm = common->next_frm = list_entry(common->dma_queue.next,
214 struct vpif_cap_buffer, list);
215 /* Remove buffer from the buffer queue */
216 list_del(&common->cur_frm->list);
217 spin_unlock_irqrestore(&common->irqlock, flags);
218
219 addr = vb2_dma_contig_plane_dma_addr(&common->cur_frm->vb.vb2_buf, 0);
220
221 common->set_addr(addr + common->ytop_off,
222 addr + common->ybtm_off,
223 addr + common->ctop_off,
224 addr + common->cbtm_off);
225
226 /**
227 * Set interrupt for both the fields in VPIF Register enable channel in
228 * VPIF register
229 */
230 channel_first_int[VPIF_VIDEO_INDEX][ch->channel_id] = 1;
231 if (VPIF_CHANNEL0_VIDEO == ch->channel_id) {
232 channel0_intr_assert();
233 channel0_intr_enable(1);
234 enable_channel0(1);
235 }
236 if (VPIF_CHANNEL1_VIDEO == ch->channel_id ||
237 ycmux_mode == 2) {
238 channel1_intr_assert();
239 channel1_intr_enable(1);
240 enable_channel1(1);
241 }
242
243 return 0;
244
245 err:
246 list_for_each_entry_safe(buf, tmp, &common->dma_queue, list) {
247 list_del(&buf->list);
248 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
249 }
250 spin_unlock_irqrestore(&common->irqlock, flags);
251
252 return ret;
253 }
254
255 /**
256 * vpif_stop_streaming : Stop the DMA engine
257 * @vq: ptr to vb2_queue
258 *
259 * This callback stops the DMA engine and any remaining buffers
260 * in the DMA queue are released.
261 */
262 static void vpif_stop_streaming(struct vb2_queue *vq)
263 {
264 struct channel_obj *ch = vb2_get_drv_priv(vq);
265 struct common_obj *common;
266 unsigned long flags;
267 int ret;
268
269 common = &ch->common[VPIF_VIDEO_INDEX];
270
271 /* Disable channel as per its device type and channel id */
272 if (VPIF_CHANNEL0_VIDEO == ch->channel_id) {
273 enable_channel0(0);
274 channel0_intr_enable(0);
275 }
276 if (VPIF_CHANNEL1_VIDEO == ch->channel_id ||
277 ycmux_mode == 2) {
278 enable_channel1(0);
279 channel1_intr_enable(0);
280 }
281
282 ycmux_mode = 0;
283
284 ret = v4l2_subdev_call(ch->sd, video, s_stream, 0);
285 if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV)
286 vpif_dbg(1, debug, "stream off failed in subdev\n");
287
288 /* release all active buffers */
289 spin_lock_irqsave(&common->irqlock, flags);
290 if (common->cur_frm == common->next_frm) {
291 vb2_buffer_done(&common->cur_frm->vb.vb2_buf,
292 VB2_BUF_STATE_ERROR);
293 } else {
294 if (common->cur_frm != NULL)
295 vb2_buffer_done(&common->cur_frm->vb.vb2_buf,
296 VB2_BUF_STATE_ERROR);
297 if (common->next_frm != NULL)
298 vb2_buffer_done(&common->next_frm->vb.vb2_buf,
299 VB2_BUF_STATE_ERROR);
300 }
301
302 while (!list_empty(&common->dma_queue)) {
303 common->next_frm = list_entry(common->dma_queue.next,
304 struct vpif_cap_buffer, list);
305 list_del(&common->next_frm->list);
306 vb2_buffer_done(&common->next_frm->vb.vb2_buf,
307 VB2_BUF_STATE_ERROR);
308 }
309 spin_unlock_irqrestore(&common->irqlock, flags);
310 }
311
312 static struct vb2_ops video_qops = {
313 .queue_setup = vpif_buffer_queue_setup,
314 .buf_prepare = vpif_buffer_prepare,
315 .start_streaming = vpif_start_streaming,
316 .stop_streaming = vpif_stop_streaming,
317 .buf_queue = vpif_buffer_queue,
318 .wait_prepare = vb2_ops_wait_prepare,
319 .wait_finish = vb2_ops_wait_finish,
320 };
321
322 /**
323 * vpif_process_buffer_complete: process a completed buffer
324 * @common: ptr to common channel object
325 *
326 * This function time stamp the buffer and mark it as DONE. It also
327 * wake up any process waiting on the QUEUE and set the next buffer
328 * as current
329 */
330 static void vpif_process_buffer_complete(struct common_obj *common)
331 {
332 common->cur_frm->vb.vb2_buf.timestamp = ktime_get_ns();
333 vb2_buffer_done(&common->cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE);
334 /* Make curFrm pointing to nextFrm */
335 common->cur_frm = common->next_frm;
336 }
337
338 /**
339 * vpif_schedule_next_buffer: set next buffer address for capture
340 * @common : ptr to common channel object
341 *
342 * This function will get next buffer from the dma queue and
343 * set the buffer address in the vpif register for capture.
344 * the buffer is marked active
345 */
346 static void vpif_schedule_next_buffer(struct common_obj *common)
347 {
348 unsigned long addr = 0;
349
350 spin_lock(&common->irqlock);
351 common->next_frm = list_entry(common->dma_queue.next,
352 struct vpif_cap_buffer, list);
353 /* Remove that buffer from the buffer queue */
354 list_del(&common->next_frm->list);
355 spin_unlock(&common->irqlock);
356 addr = vb2_dma_contig_plane_dma_addr(&common->next_frm->vb.vb2_buf, 0);
357
358 /* Set top and bottom field addresses in VPIF registers */
359 common->set_addr(addr + common->ytop_off,
360 addr + common->ybtm_off,
361 addr + common->ctop_off,
362 addr + common->cbtm_off);
363 }
364
365 /**
366 * vpif_channel_isr : ISR handler for vpif capture
367 * @irq: irq number
368 * @dev_id: dev_id ptr
369 *
370 * It changes status of the captured buffer, takes next buffer from the queue
371 * and sets its address in VPIF registers
372 */
373 static irqreturn_t vpif_channel_isr(int irq, void *dev_id)
374 {
375 struct vpif_device *dev = &vpif_obj;
376 struct common_obj *common;
377 struct channel_obj *ch;
378 int channel_id = 0;
379 int fid = -1, i;
380
381 channel_id = *(int *)(dev_id);
382 if (!vpif_intr_status(channel_id))
383 return IRQ_NONE;
384
385 ch = dev->dev[channel_id];
386
387 for (i = 0; i < VPIF_NUMBER_OF_OBJECTS; i++) {
388 common = &ch->common[i];
389 /* skip If streaming is not started in this channel */
390 /* Check the field format */
391 if (1 == ch->vpifparams.std_info.frm_fmt) {
392 /* Progressive mode */
393 spin_lock(&common->irqlock);
394 if (list_empty(&common->dma_queue)) {
395 spin_unlock(&common->irqlock);
396 continue;
397 }
398 spin_unlock(&common->irqlock);
399
400 if (!channel_first_int[i][channel_id])
401 vpif_process_buffer_complete(common);
402
403 channel_first_int[i][channel_id] = 0;
404
405 vpif_schedule_next_buffer(common);
406
407
408 channel_first_int[i][channel_id] = 0;
409 } else {
410 /**
411 * Interlaced mode. If it is first interrupt, ignore
412 * it
413 */
414 if (channel_first_int[i][channel_id]) {
415 channel_first_int[i][channel_id] = 0;
416 continue;
417 }
418 if (0 == i) {
419 ch->field_id ^= 1;
420 /* Get field id from VPIF registers */
421 fid = vpif_channel_getfid(ch->channel_id);
422 if (fid != ch->field_id) {
423 /**
424 * If field id does not match stored
425 * field id, make them in sync
426 */
427 if (0 == fid)
428 ch->field_id = fid;
429 return IRQ_HANDLED;
430 }
431 }
432 /* device field id and local field id are in sync */
433 if (0 == fid) {
434 /* this is even field */
435 if (common->cur_frm == common->next_frm)
436 continue;
437
438 /* mark the current buffer as done */
439 vpif_process_buffer_complete(common);
440 } else if (1 == fid) {
441 /* odd field */
442 spin_lock(&common->irqlock);
443 if (list_empty(&common->dma_queue) ||
444 (common->cur_frm != common->next_frm)) {
445 spin_unlock(&common->irqlock);
446 continue;
447 }
448 spin_unlock(&common->irqlock);
449
450 vpif_schedule_next_buffer(common);
451 }
452 }
453 }
454 return IRQ_HANDLED;
455 }
456
457 /**
458 * vpif_update_std_info() - update standard related info
459 * @ch: ptr to channel object
460 *
461 * For a given standard selected by application, update values
462 * in the device data structures
463 */
464 static int vpif_update_std_info(struct channel_obj *ch)
465 {
466 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
467 struct vpif_params *vpifparams = &ch->vpifparams;
468 const struct vpif_channel_config_params *config;
469 struct vpif_channel_config_params *std_info = &vpifparams->std_info;
470 struct video_obj *vid_ch = &ch->video;
471 int index;
472
473 vpif_dbg(2, debug, "vpif_update_std_info\n");
474
475 for (index = 0; index < vpif_ch_params_count; index++) {
476 config = &vpif_ch_params[index];
477 if (config->hd_sd == 0) {
478 vpif_dbg(2, debug, "SD format\n");
479 if (config->stdid & vid_ch->stdid) {
480 memcpy(std_info, config, sizeof(*config));
481 break;
482 }
483 } else {
484 vpif_dbg(2, debug, "HD format\n");
485 if (!memcmp(&config->dv_timings, &vid_ch->dv_timings,
486 sizeof(vid_ch->dv_timings))) {
487 memcpy(std_info, config, sizeof(*config));
488 break;
489 }
490 }
491 }
492
493 /* standard not found */
494 if (index == vpif_ch_params_count)
495 return -EINVAL;
496
497 common->fmt.fmt.pix.width = std_info->width;
498 common->width = std_info->width;
499 common->fmt.fmt.pix.height = std_info->height;
500 common->height = std_info->height;
501 common->fmt.fmt.pix.sizeimage = common->height * common->width * 2;
502 common->fmt.fmt.pix.bytesperline = std_info->width;
503 vpifparams->video_params.hpitch = std_info->width;
504 vpifparams->video_params.storage_mode = std_info->frm_fmt;
505
506 if (vid_ch->stdid)
507 common->fmt.fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
508 else
509 common->fmt.fmt.pix.colorspace = V4L2_COLORSPACE_REC709;
510
511 if (ch->vpifparams.std_info.frm_fmt)
512 common->fmt.fmt.pix.field = V4L2_FIELD_NONE;
513 else
514 common->fmt.fmt.pix.field = V4L2_FIELD_INTERLACED;
515
516 if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER)
517 common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_SBGGR8;
518 else
519 common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUV422P;
520
521 common->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
522
523 return 0;
524 }
525
526 /**
527 * vpif_calculate_offsets : This function calculates buffers offsets
528 * @ch : ptr to channel object
529 *
530 * This function calculates buffer offsets for Y and C in the top and
531 * bottom field
532 */
533 static void vpif_calculate_offsets(struct channel_obj *ch)
534 {
535 unsigned int hpitch, sizeimage;
536 struct video_obj *vid_ch = &(ch->video);
537 struct vpif_params *vpifparams = &ch->vpifparams;
538 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
539 enum v4l2_field field = common->fmt.fmt.pix.field;
540
541 vpif_dbg(2, debug, "vpif_calculate_offsets\n");
542
543 if (V4L2_FIELD_ANY == field) {
544 if (vpifparams->std_info.frm_fmt)
545 vid_ch->buf_field = V4L2_FIELD_NONE;
546 else
547 vid_ch->buf_field = V4L2_FIELD_INTERLACED;
548 } else
549 vid_ch->buf_field = common->fmt.fmt.pix.field;
550
551 sizeimage = common->fmt.fmt.pix.sizeimage;
552
553 hpitch = common->fmt.fmt.pix.bytesperline;
554
555 if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
556 (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) {
557 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
558 common->ytop_off = 0;
559 common->ybtm_off = hpitch;
560 common->ctop_off = sizeimage / 2;
561 common->cbtm_off = sizeimage / 2 + hpitch;
562 } else if (V4L2_FIELD_SEQ_TB == 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 = sizeimage / 4;
566 common->ctop_off = sizeimage / 2;
567 common->cbtm_off = common->ctop_off + sizeimage / 4;
568 } else if (V4L2_FIELD_SEQ_BT == vid_ch->buf_field) {
569 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
570 common->ybtm_off = 0;
571 common->ytop_off = sizeimage / 4;
572 common->cbtm_off = sizeimage / 2;
573 common->ctop_off = common->cbtm_off + sizeimage / 4;
574 }
575 if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
576 (V4L2_FIELD_INTERLACED == vid_ch->buf_field))
577 vpifparams->video_params.storage_mode = 1;
578 else
579 vpifparams->video_params.storage_mode = 0;
580
581 if (1 == vpifparams->std_info.frm_fmt)
582 vpifparams->video_params.hpitch =
583 common->fmt.fmt.pix.bytesperline;
584 else {
585 if ((field == V4L2_FIELD_ANY)
586 || (field == V4L2_FIELD_INTERLACED))
587 vpifparams->video_params.hpitch =
588 common->fmt.fmt.pix.bytesperline * 2;
589 else
590 vpifparams->video_params.hpitch =
591 common->fmt.fmt.pix.bytesperline;
592 }
593
594 ch->vpifparams.video_params.stdid = vpifparams->std_info.stdid;
595 }
596
597 /**
598 * vpif_get_default_field() - Get default field type based on interface
599 * @vpif_params - ptr to vpif params
600 */
601 static inline enum v4l2_field vpif_get_default_field(
602 struct vpif_interface *iface)
603 {
604 return (iface->if_type == VPIF_IF_RAW_BAYER) ? V4L2_FIELD_NONE :
605 V4L2_FIELD_INTERLACED;
606 }
607
608 /**
609 * vpif_config_addr() - function to configure buffer address in vpif
610 * @ch - channel ptr
611 * @muxmode - channel mux mode
612 */
613 static void vpif_config_addr(struct channel_obj *ch, int muxmode)
614 {
615 struct common_obj *common;
616
617 vpif_dbg(2, debug, "vpif_config_addr\n");
618
619 common = &(ch->common[VPIF_VIDEO_INDEX]);
620
621 if (VPIF_CHANNEL1_VIDEO == ch->channel_id)
622 common->set_addr = ch1_set_videobuf_addr;
623 else if (2 == muxmode)
624 common->set_addr = ch0_set_videobuf_addr_yc_nmux;
625 else
626 common->set_addr = ch0_set_videobuf_addr;
627 }
628
629 /**
630 * vpif_input_to_subdev() - Maps input to sub device
631 * @vpif_cfg - global config ptr
632 * @chan_cfg - channel config ptr
633 * @input_index - Given input index from application
634 *
635 * lookup the sub device information for a given input index.
636 * we report all the inputs to application. inputs table also
637 * has sub device name for the each input
638 */
639 static int vpif_input_to_subdev(
640 struct vpif_capture_config *vpif_cfg,
641 struct vpif_capture_chan_config *chan_cfg,
642 int input_index)
643 {
644 struct vpif_subdev_info *subdev_info;
645 const char *subdev_name;
646 int i;
647
648 vpif_dbg(2, debug, "vpif_input_to_subdev\n");
649
650 subdev_name = chan_cfg->inputs[input_index].subdev_name;
651 if (subdev_name == NULL)
652 return -1;
653
654 /* loop through the sub device list to get the sub device info */
655 for (i = 0; i < vpif_cfg->subdev_count; i++) {
656 subdev_info = &vpif_cfg->subdev_info[i];
657 if (!strcmp(subdev_info->name, subdev_name))
658 return i;
659 }
660 return -1;
661 }
662
663 /**
664 * vpif_set_input() - Select an input
665 * @vpif_cfg - global config ptr
666 * @ch - channel
667 * @_index - Given input index from application
668 *
669 * Select the given input.
670 */
671 static int vpif_set_input(
672 struct vpif_capture_config *vpif_cfg,
673 struct channel_obj *ch,
674 int index)
675 {
676 struct vpif_capture_chan_config *chan_cfg =
677 &vpif_cfg->chan_config[ch->channel_id];
678 struct vpif_subdev_info *subdev_info = NULL;
679 struct v4l2_subdev *sd = NULL;
680 u32 input = 0, output = 0;
681 int sd_index;
682 int ret;
683
684 sd_index = vpif_input_to_subdev(vpif_cfg, chan_cfg, index);
685 if (sd_index >= 0) {
686 sd = vpif_obj.sd[sd_index];
687 subdev_info = &vpif_cfg->subdev_info[sd_index];
688 }
689
690 /* first setup input path from sub device to vpif */
691 if (sd && vpif_cfg->setup_input_path) {
692 ret = vpif_cfg->setup_input_path(ch->channel_id,
693 subdev_info->name);
694 if (ret < 0) {
695 vpif_dbg(1, debug, "couldn't setup input path for the" \
696 " sub device %s, for input index %d\n",
697 subdev_info->name, index);
698 return ret;
699 }
700 }
701
702 if (sd) {
703 input = chan_cfg->inputs[index].input_route;
704 output = chan_cfg->inputs[index].output_route;
705 ret = v4l2_subdev_call(sd, video, s_routing,
706 input, output, 0);
707 if (ret < 0 && ret != -ENOIOCTLCMD) {
708 vpif_dbg(1, debug, "Failed to set input\n");
709 return ret;
710 }
711 }
712 ch->input_idx = index;
713 ch->sd = sd;
714 /* copy interface parameters to vpif */
715 ch->vpifparams.iface = chan_cfg->vpif_if;
716
717 /* update tvnorms from the sub device input info */
718 ch->video_dev.tvnorms = chan_cfg->inputs[index].input.std;
719 return 0;
720 }
721
722 /**
723 * vpif_querystd() - querystd handler
724 * @file: file ptr
725 * @priv: file handle
726 * @std_id: ptr to std id
727 *
728 * This function is called to detect standard at the selected input
729 */
730 static int vpif_querystd(struct file *file, void *priv, v4l2_std_id *std_id)
731 {
732 struct video_device *vdev = video_devdata(file);
733 struct channel_obj *ch = video_get_drvdata(vdev);
734 int ret = 0;
735
736 vpif_dbg(2, debug, "vpif_querystd\n");
737
738 /* Call querystd function of decoder device */
739 ret = v4l2_subdev_call(ch->sd, video, querystd, std_id);
740
741 if (ret == -ENOIOCTLCMD || ret == -ENODEV)
742 return -ENODATA;
743 if (ret) {
744 vpif_dbg(1, debug, "Failed to query standard for sub devices\n");
745 return ret;
746 }
747
748 return 0;
749 }
750
751 /**
752 * vpif_g_std() - get STD handler
753 * @file: file ptr
754 * @priv: file handle
755 * @std_id: ptr to std id
756 */
757 static int vpif_g_std(struct file *file, void *priv, v4l2_std_id *std)
758 {
759 struct vpif_capture_config *config = vpif_dev->platform_data;
760 struct video_device *vdev = video_devdata(file);
761 struct channel_obj *ch = video_get_drvdata(vdev);
762 struct vpif_capture_chan_config *chan_cfg;
763 struct v4l2_input input;
764
765 vpif_dbg(2, debug, "vpif_g_std\n");
766
767 if (config->chan_config[ch->channel_id].inputs == NULL)
768 return -ENODATA;
769
770 chan_cfg = &config->chan_config[ch->channel_id];
771 input = chan_cfg->inputs[ch->input_idx].input;
772 if (input.capabilities != V4L2_IN_CAP_STD)
773 return -ENODATA;
774
775 *std = ch->video.stdid;
776 return 0;
777 }
778
779 /**
780 * vpif_s_std() - set STD handler
781 * @file: file ptr
782 * @priv: file handle
783 * @std_id: ptr to std id
784 */
785 static int vpif_s_std(struct file *file, void *priv, v4l2_std_id std_id)
786 {
787 struct vpif_capture_config *config = vpif_dev->platform_data;
788 struct video_device *vdev = video_devdata(file);
789 struct channel_obj *ch = video_get_drvdata(vdev);
790 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
791 struct vpif_capture_chan_config *chan_cfg;
792 struct v4l2_input input;
793 int ret;
794
795 vpif_dbg(2, debug, "vpif_s_std\n");
796
797 if (config->chan_config[ch->channel_id].inputs == NULL)
798 return -ENODATA;
799
800 chan_cfg = &config->chan_config[ch->channel_id];
801 input = chan_cfg->inputs[ch->input_idx].input;
802 if (input.capabilities != V4L2_IN_CAP_STD)
803 return -ENODATA;
804
805 if (vb2_is_busy(&common->buffer_queue))
806 return -EBUSY;
807
808 /* Call encoder subdevice function to set the standard */
809 ch->video.stdid = std_id;
810 memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings));
811
812 /* Get the information about the standard */
813 if (vpif_update_std_info(ch)) {
814 vpif_err("Error getting the standard info\n");
815 return -EINVAL;
816 }
817
818 /* set standard in the sub device */
819 ret = v4l2_subdev_call(ch->sd, video, s_std, std_id);
820 if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) {
821 vpif_dbg(1, debug, "Failed to set standard for sub devices\n");
822 return ret;
823 }
824 return 0;
825 }
826
827 /**
828 * vpif_enum_input() - ENUMINPUT handler
829 * @file: file ptr
830 * @priv: file handle
831 * @input: ptr to input structure
832 */
833 static int vpif_enum_input(struct file *file, void *priv,
834 struct v4l2_input *input)
835 {
836
837 struct vpif_capture_config *config = vpif_dev->platform_data;
838 struct video_device *vdev = video_devdata(file);
839 struct channel_obj *ch = video_get_drvdata(vdev);
840 struct vpif_capture_chan_config *chan_cfg;
841
842 chan_cfg = &config->chan_config[ch->channel_id];
843
844 if (input->index >= chan_cfg->input_count)
845 return -EINVAL;
846
847 memcpy(input, &chan_cfg->inputs[input->index].input,
848 sizeof(*input));
849 return 0;
850 }
851
852 /**
853 * vpif_g_input() - Get INPUT handler
854 * @file: file ptr
855 * @priv: file handle
856 * @index: ptr to input index
857 */
858 static int vpif_g_input(struct file *file, void *priv, unsigned int *index)
859 {
860 struct video_device *vdev = video_devdata(file);
861 struct channel_obj *ch = video_get_drvdata(vdev);
862
863 *index = ch->input_idx;
864 return 0;
865 }
866
867 /**
868 * vpif_s_input() - Set INPUT handler
869 * @file: file ptr
870 * @priv: file handle
871 * @index: input index
872 */
873 static int vpif_s_input(struct file *file, void *priv, unsigned int index)
874 {
875 struct vpif_capture_config *config = vpif_dev->platform_data;
876 struct video_device *vdev = video_devdata(file);
877 struct channel_obj *ch = video_get_drvdata(vdev);
878 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
879 struct vpif_capture_chan_config *chan_cfg;
880
881 chan_cfg = &config->chan_config[ch->channel_id];
882
883 if (index >= chan_cfg->input_count)
884 return -EINVAL;
885
886 if (vb2_is_busy(&common->buffer_queue))
887 return -EBUSY;
888
889 return vpif_set_input(config, ch, index);
890 }
891
892 /**
893 * vpif_enum_fmt_vid_cap() - ENUM_FMT handler
894 * @file: file ptr
895 * @priv: file handle
896 * @index: input index
897 */
898 static int vpif_enum_fmt_vid_cap(struct file *file, void *priv,
899 struct v4l2_fmtdesc *fmt)
900 {
901 struct video_device *vdev = video_devdata(file);
902 struct channel_obj *ch = video_get_drvdata(vdev);
903
904 if (fmt->index != 0) {
905 vpif_dbg(1, debug, "Invalid format index\n");
906 return -EINVAL;
907 }
908
909 /* Fill in the information about format */
910 if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER) {
911 fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
912 strcpy(fmt->description, "Raw Mode -Bayer Pattern GrRBGb");
913 fmt->pixelformat = V4L2_PIX_FMT_SBGGR8;
914 } else {
915 fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
916 strcpy(fmt->description, "YCbCr4:2:2 YC Planar");
917 fmt->pixelformat = V4L2_PIX_FMT_YUV422P;
918 }
919 return 0;
920 }
921
922 /**
923 * vpif_try_fmt_vid_cap() - TRY_FMT handler
924 * @file: file ptr
925 * @priv: file handle
926 * @fmt: ptr to v4l2 format structure
927 */
928 static int vpif_try_fmt_vid_cap(struct file *file, void *priv,
929 struct v4l2_format *fmt)
930 {
931 struct video_device *vdev = video_devdata(file);
932 struct channel_obj *ch = video_get_drvdata(vdev);
933 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
934 struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]);
935 struct vpif_params *vpif_params = &ch->vpifparams;
936
937 /*
938 * to supress v4l-compliance warnings silently correct
939 * the pixelformat
940 */
941 if (vpif_params->iface.if_type == VPIF_IF_RAW_BAYER) {
942 if (pixfmt->pixelformat != V4L2_PIX_FMT_SBGGR8)
943 pixfmt->pixelformat = V4L2_PIX_FMT_SBGGR8;
944 } else {
945 if (pixfmt->pixelformat != V4L2_PIX_FMT_YUV422P)
946 pixfmt->pixelformat = V4L2_PIX_FMT_YUV422P;
947 }
948
949 common->fmt.fmt.pix.pixelformat = pixfmt->pixelformat;
950
951 vpif_update_std_info(ch);
952
953 pixfmt->field = common->fmt.fmt.pix.field;
954 pixfmt->colorspace = common->fmt.fmt.pix.colorspace;
955 pixfmt->bytesperline = common->fmt.fmt.pix.width;
956 pixfmt->width = common->fmt.fmt.pix.width;
957 pixfmt->height = common->fmt.fmt.pix.height;
958 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height * 2;
959 pixfmt->priv = 0;
960
961 return 0;
962 }
963
964
965 /**
966 * vpif_g_fmt_vid_cap() - Set INPUT handler
967 * @file: file ptr
968 * @priv: file handle
969 * @fmt: ptr to v4l2 format structure
970 */
971 static int vpif_g_fmt_vid_cap(struct file *file, void *priv,
972 struct v4l2_format *fmt)
973 {
974 struct video_device *vdev = video_devdata(file);
975 struct channel_obj *ch = video_get_drvdata(vdev);
976 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
977
978 /* Check the validity of the buffer type */
979 if (common->fmt.type != fmt->type)
980 return -EINVAL;
981
982 /* Fill in the information about format */
983 *fmt = common->fmt;
984 return 0;
985 }
986
987 /**
988 * vpif_s_fmt_vid_cap() - Set FMT handler
989 * @file: file ptr
990 * @priv: file handle
991 * @fmt: ptr to v4l2 format structure
992 */
993 static int vpif_s_fmt_vid_cap(struct file *file, void *priv,
994 struct v4l2_format *fmt)
995 {
996 struct video_device *vdev = video_devdata(file);
997 struct channel_obj *ch = video_get_drvdata(vdev);
998 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
999 int ret;
1000
1001 vpif_dbg(2, debug, "%s\n", __func__);
1002
1003 if (vb2_is_busy(&common->buffer_queue))
1004 return -EBUSY;
1005
1006 ret = vpif_try_fmt_vid_cap(file, priv, fmt);
1007 if (ret)
1008 return ret;
1009
1010 /* store the format in the channel object */
1011 common->fmt = *fmt;
1012 return 0;
1013 }
1014
1015 /**
1016 * vpif_querycap() - QUERYCAP handler
1017 * @file: file ptr
1018 * @priv: file handle
1019 * @cap: ptr to v4l2_capability structure
1020 */
1021 static int vpif_querycap(struct file *file, void *priv,
1022 struct v4l2_capability *cap)
1023 {
1024 struct vpif_capture_config *config = vpif_dev->platform_data;
1025
1026 cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
1027 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
1028 strlcpy(cap->driver, VPIF_DRIVER_NAME, sizeof(cap->driver));
1029 snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
1030 dev_name(vpif_dev));
1031 strlcpy(cap->card, config->card_name, sizeof(cap->card));
1032
1033 return 0;
1034 }
1035
1036 /**
1037 * vpif_enum_dv_timings() - ENUM_DV_TIMINGS handler
1038 * @file: file ptr
1039 * @priv: file handle
1040 * @timings: input timings
1041 */
1042 static int
1043 vpif_enum_dv_timings(struct file *file, void *priv,
1044 struct v4l2_enum_dv_timings *timings)
1045 {
1046 struct vpif_capture_config *config = vpif_dev->platform_data;
1047 struct video_device *vdev = video_devdata(file);
1048 struct channel_obj *ch = video_get_drvdata(vdev);
1049 struct vpif_capture_chan_config *chan_cfg;
1050 struct v4l2_input input;
1051 int ret;
1052
1053 if (config->chan_config[ch->channel_id].inputs == NULL)
1054 return -ENODATA;
1055
1056 chan_cfg = &config->chan_config[ch->channel_id];
1057 input = chan_cfg->inputs[ch->input_idx].input;
1058 if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1059 return -ENODATA;
1060
1061 timings->pad = 0;
1062
1063 ret = v4l2_subdev_call(ch->sd, pad, enum_dv_timings, timings);
1064 if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1065 return -EINVAL;
1066
1067 return ret;
1068 }
1069
1070 /**
1071 * vpif_query_dv_timings() - QUERY_DV_TIMINGS handler
1072 * @file: file ptr
1073 * @priv: file handle
1074 * @timings: input timings
1075 */
1076 static int
1077 vpif_query_dv_timings(struct file *file, void *priv,
1078 struct v4l2_dv_timings *timings)
1079 {
1080 struct vpif_capture_config *config = vpif_dev->platform_data;
1081 struct video_device *vdev = video_devdata(file);
1082 struct channel_obj *ch = video_get_drvdata(vdev);
1083 struct vpif_capture_chan_config *chan_cfg;
1084 struct v4l2_input input;
1085 int ret;
1086
1087 if (config->chan_config[ch->channel_id].inputs == NULL)
1088 return -ENODATA;
1089
1090 chan_cfg = &config->chan_config[ch->channel_id];
1091 input = chan_cfg->inputs[ch->input_idx].input;
1092 if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1093 return -ENODATA;
1094
1095 ret = v4l2_subdev_call(ch->sd, video, query_dv_timings, timings);
1096 if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1097 return -ENODATA;
1098
1099 return ret;
1100 }
1101
1102 /**
1103 * vpif_s_dv_timings() - S_DV_TIMINGS handler
1104 * @file: file ptr
1105 * @priv: file handle
1106 * @timings: digital video timings
1107 */
1108 static int vpif_s_dv_timings(struct file *file, void *priv,
1109 struct v4l2_dv_timings *timings)
1110 {
1111 struct vpif_capture_config *config = vpif_dev->platform_data;
1112 struct video_device *vdev = video_devdata(file);
1113 struct channel_obj *ch = video_get_drvdata(vdev);
1114 struct vpif_params *vpifparams = &ch->vpifparams;
1115 struct vpif_channel_config_params *std_info = &vpifparams->std_info;
1116 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1117 struct video_obj *vid_ch = &ch->video;
1118 struct v4l2_bt_timings *bt = &vid_ch->dv_timings.bt;
1119 struct vpif_capture_chan_config *chan_cfg;
1120 struct v4l2_input input;
1121 int ret;
1122
1123 if (config->chan_config[ch->channel_id].inputs == NULL)
1124 return -ENODATA;
1125
1126 chan_cfg = &config->chan_config[ch->channel_id];
1127 input = chan_cfg->inputs[ch->input_idx].input;
1128 if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1129 return -ENODATA;
1130
1131 if (timings->type != V4L2_DV_BT_656_1120) {
1132 vpif_dbg(2, debug, "Timing type not defined\n");
1133 return -EINVAL;
1134 }
1135
1136 if (vb2_is_busy(&common->buffer_queue))
1137 return -EBUSY;
1138
1139 /* Configure subdevice timings, if any */
1140 ret = v4l2_subdev_call(ch->sd, video, s_dv_timings, timings);
1141 if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1142 ret = 0;
1143 if (ret < 0) {
1144 vpif_dbg(2, debug, "Error setting custom DV timings\n");
1145 return ret;
1146 }
1147
1148 if (!(timings->bt.width && timings->bt.height &&
1149 (timings->bt.hbackporch ||
1150 timings->bt.hfrontporch ||
1151 timings->bt.hsync) &&
1152 timings->bt.vfrontporch &&
1153 (timings->bt.vbackporch ||
1154 timings->bt.vsync))) {
1155 vpif_dbg(2, debug, "Timings for width, height, "
1156 "horizontal back porch, horizontal sync, "
1157 "horizontal front porch, vertical back porch, "
1158 "vertical sync and vertical back porch "
1159 "must be defined\n");
1160 return -EINVAL;
1161 }
1162
1163 vid_ch->dv_timings = *timings;
1164
1165 /* Configure video port timings */
1166
1167 std_info->eav2sav = V4L2_DV_BT_BLANKING_WIDTH(bt) - 8;
1168 std_info->sav2eav = bt->width;
1169
1170 std_info->l1 = 1;
1171 std_info->l3 = bt->vsync + bt->vbackporch + 1;
1172
1173 std_info->vsize = V4L2_DV_BT_FRAME_HEIGHT(bt);
1174 if (bt->interlaced) {
1175 if (bt->il_vbackporch || bt->il_vfrontporch || bt->il_vsync) {
1176 std_info->l5 = std_info->vsize/2 -
1177 (bt->vfrontporch - 1);
1178 std_info->l7 = std_info->vsize/2 + 1;
1179 std_info->l9 = std_info->l7 + bt->il_vsync +
1180 bt->il_vbackporch + 1;
1181 std_info->l11 = std_info->vsize -
1182 (bt->il_vfrontporch - 1);
1183 } else {
1184 vpif_dbg(2, debug, "Required timing values for "
1185 "interlaced BT format missing\n");
1186 return -EINVAL;
1187 }
1188 } else {
1189 std_info->l5 = std_info->vsize - (bt->vfrontporch - 1);
1190 }
1191 strncpy(std_info->name, "Custom timings BT656/1120", VPIF_MAX_NAME);
1192 std_info->width = bt->width;
1193 std_info->height = bt->height;
1194 std_info->frm_fmt = bt->interlaced ? 0 : 1;
1195 std_info->ycmux_mode = 0;
1196 std_info->capture_format = 0;
1197 std_info->vbi_supported = 0;
1198 std_info->hd_sd = 1;
1199 std_info->stdid = 0;
1200
1201 vid_ch->stdid = 0;
1202 return 0;
1203 }
1204
1205 /**
1206 * vpif_g_dv_timings() - G_DV_TIMINGS handler
1207 * @file: file ptr
1208 * @priv: file handle
1209 * @timings: digital video timings
1210 */
1211 static int vpif_g_dv_timings(struct file *file, void *priv,
1212 struct v4l2_dv_timings *timings)
1213 {
1214 struct vpif_capture_config *config = vpif_dev->platform_data;
1215 struct video_device *vdev = video_devdata(file);
1216 struct channel_obj *ch = video_get_drvdata(vdev);
1217 struct video_obj *vid_ch = &ch->video;
1218 struct vpif_capture_chan_config *chan_cfg;
1219 struct v4l2_input input;
1220
1221 if (config->chan_config[ch->channel_id].inputs == NULL)
1222 return -ENODATA;
1223
1224 chan_cfg = &config->chan_config[ch->channel_id];
1225 input = chan_cfg->inputs[ch->input_idx].input;
1226 if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1227 return -ENODATA;
1228
1229 *timings = vid_ch->dv_timings;
1230
1231 return 0;
1232 }
1233
1234 /*
1235 * vpif_log_status() - Status information
1236 * @file: file ptr
1237 * @priv: file handle
1238 *
1239 * Returns zero.
1240 */
1241 static int vpif_log_status(struct file *filep, void *priv)
1242 {
1243 /* status for sub devices */
1244 v4l2_device_call_all(&vpif_obj.v4l2_dev, 0, core, log_status);
1245
1246 return 0;
1247 }
1248
1249 /* vpif capture ioctl operations */
1250 static const struct v4l2_ioctl_ops vpif_ioctl_ops = {
1251 .vidioc_querycap = vpif_querycap,
1252 .vidioc_enum_fmt_vid_cap = vpif_enum_fmt_vid_cap,
1253 .vidioc_g_fmt_vid_cap = vpif_g_fmt_vid_cap,
1254 .vidioc_s_fmt_vid_cap = vpif_s_fmt_vid_cap,
1255 .vidioc_try_fmt_vid_cap = vpif_try_fmt_vid_cap,
1256
1257 .vidioc_enum_input = vpif_enum_input,
1258 .vidioc_s_input = vpif_s_input,
1259 .vidioc_g_input = vpif_g_input,
1260
1261 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1262 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1263 .vidioc_querybuf = vb2_ioctl_querybuf,
1264 .vidioc_qbuf = vb2_ioctl_qbuf,
1265 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1266 .vidioc_expbuf = vb2_ioctl_expbuf,
1267 .vidioc_streamon = vb2_ioctl_streamon,
1268 .vidioc_streamoff = vb2_ioctl_streamoff,
1269
1270 .vidioc_querystd = vpif_querystd,
1271 .vidioc_s_std = vpif_s_std,
1272 .vidioc_g_std = vpif_g_std,
1273
1274 .vidioc_enum_dv_timings = vpif_enum_dv_timings,
1275 .vidioc_query_dv_timings = vpif_query_dv_timings,
1276 .vidioc_s_dv_timings = vpif_s_dv_timings,
1277 .vidioc_g_dv_timings = vpif_g_dv_timings,
1278
1279 .vidioc_log_status = vpif_log_status,
1280 };
1281
1282 /* vpif file operations */
1283 static struct v4l2_file_operations vpif_fops = {
1284 .owner = THIS_MODULE,
1285 .open = v4l2_fh_open,
1286 .release = vb2_fop_release,
1287 .unlocked_ioctl = video_ioctl2,
1288 .mmap = vb2_fop_mmap,
1289 .poll = vb2_fop_poll
1290 };
1291
1292 /**
1293 * initialize_vpif() - Initialize vpif data structures
1294 *
1295 * Allocate memory for data structures and initialize them
1296 */
1297 static int initialize_vpif(void)
1298 {
1299 int err, i, j;
1300 int free_channel_objects_index;
1301
1302 /* Allocate memory for six channel objects */
1303 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1304 vpif_obj.dev[i] =
1305 kzalloc(sizeof(*vpif_obj.dev[i]), GFP_KERNEL);
1306 /* If memory allocation fails, return error */
1307 if (!vpif_obj.dev[i]) {
1308 free_channel_objects_index = i;
1309 err = -ENOMEM;
1310 goto vpif_init_free_channel_objects;
1311 }
1312 }
1313 return 0;
1314
1315 vpif_init_free_channel_objects:
1316 for (j = 0; j < free_channel_objects_index; j++)
1317 kfree(vpif_obj.dev[j]);
1318 return err;
1319 }
1320
1321 static int vpif_async_bound(struct v4l2_async_notifier *notifier,
1322 struct v4l2_subdev *subdev,
1323 struct v4l2_async_subdev *asd)
1324 {
1325 int i;
1326
1327 for (i = 0; i < vpif_obj.config->subdev_count; i++)
1328 if (!strcmp(vpif_obj.config->subdev_info[i].name,
1329 subdev->name)) {
1330 vpif_obj.sd[i] = subdev;
1331 return 0;
1332 }
1333
1334 return -EINVAL;
1335 }
1336
1337 static int vpif_probe_complete(void)
1338 {
1339 struct common_obj *common;
1340 struct video_device *vdev;
1341 struct channel_obj *ch;
1342 struct vb2_queue *q;
1343 int j, err, k;
1344
1345 for (j = 0; j < VPIF_CAPTURE_MAX_DEVICES; j++) {
1346 ch = vpif_obj.dev[j];
1347 ch->channel_id = j;
1348 common = &(ch->common[VPIF_VIDEO_INDEX]);
1349 spin_lock_init(&common->irqlock);
1350 mutex_init(&common->lock);
1351
1352 /* select input 0 */
1353 err = vpif_set_input(vpif_obj.config, ch, 0);
1354 if (err)
1355 goto probe_out;
1356
1357 /* set initial format */
1358 ch->video.stdid = V4L2_STD_525_60;
1359 memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings));
1360 vpif_update_std_info(ch);
1361
1362 /* Initialize vb2 queue */
1363 q = &common->buffer_queue;
1364 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1365 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1366 q->drv_priv = ch;
1367 q->ops = &video_qops;
1368 q->mem_ops = &vb2_dma_contig_memops;
1369 q->buf_struct_size = sizeof(struct vpif_cap_buffer);
1370 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1371 q->min_buffers_needed = 1;
1372 q->lock = &common->lock;
1373 q->dev = vpif_dev;
1374
1375 err = vb2_queue_init(q);
1376 if (err) {
1377 vpif_err("vpif_capture: vb2_queue_init() failed\n");
1378 goto probe_out;
1379 }
1380
1381 INIT_LIST_HEAD(&common->dma_queue);
1382
1383 /* Initialize the video_device structure */
1384 vdev = &ch->video_dev;
1385 strlcpy(vdev->name, VPIF_DRIVER_NAME, sizeof(vdev->name));
1386 vdev->release = video_device_release_empty;
1387 vdev->fops = &vpif_fops;
1388 vdev->ioctl_ops = &vpif_ioctl_ops;
1389 vdev->v4l2_dev = &vpif_obj.v4l2_dev;
1390 vdev->vfl_dir = VFL_DIR_RX;
1391 vdev->queue = q;
1392 vdev->lock = &common->lock;
1393 video_set_drvdata(&ch->video_dev, ch);
1394 err = video_register_device(vdev,
1395 VFL_TYPE_GRABBER, (j ? 1 : 0));
1396 if (err)
1397 goto probe_out;
1398 }
1399
1400 v4l2_info(&vpif_obj.v4l2_dev, "VPIF capture driver initialized\n");
1401 return 0;
1402
1403 probe_out:
1404 for (k = 0; k < j; k++) {
1405 /* Get the pointer to the channel object */
1406 ch = vpif_obj.dev[k];
1407 common = &ch->common[k];
1408 /* Unregister video device */
1409 video_unregister_device(&ch->video_dev);
1410 }
1411 kfree(vpif_obj.sd);
1412 v4l2_device_unregister(&vpif_obj.v4l2_dev);
1413
1414 return err;
1415 }
1416
1417 static int vpif_async_complete(struct v4l2_async_notifier *notifier)
1418 {
1419 return vpif_probe_complete();
1420 }
1421
1422 /**
1423 * vpif_probe : This function probes the vpif capture driver
1424 * @pdev: platform device pointer
1425 *
1426 * This creates device entries by register itself to the V4L2 driver and
1427 * initializes fields of each channel objects
1428 */
1429 static __init int vpif_probe(struct platform_device *pdev)
1430 {
1431 struct vpif_subdev_info *subdevdata;
1432 struct i2c_adapter *i2c_adap;
1433 struct resource *res;
1434 int subdev_count;
1435 int res_idx = 0;
1436 int i, err;
1437
1438 vpif_dev = &pdev->dev;
1439
1440 err = initialize_vpif();
1441 if (err) {
1442 v4l2_err(vpif_dev->driver, "Error initializing vpif\n");
1443 return err;
1444 }
1445
1446 err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev);
1447 if (err) {
1448 v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n");
1449 return err;
1450 }
1451
1452 while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, res_idx))) {
1453 err = devm_request_irq(&pdev->dev, res->start, vpif_channel_isr,
1454 IRQF_SHARED, VPIF_DRIVER_NAME,
1455 (void *)(&vpif_obj.dev[res_idx]->
1456 channel_id));
1457 if (err) {
1458 err = -EINVAL;
1459 goto vpif_unregister;
1460 }
1461 res_idx++;
1462 }
1463
1464 vpif_obj.config = pdev->dev.platform_data;
1465
1466 subdev_count = vpif_obj.config->subdev_count;
1467 vpif_obj.sd = kzalloc(sizeof(struct v4l2_subdev *) * subdev_count,
1468 GFP_KERNEL);
1469 if (vpif_obj.sd == NULL) {
1470 vpif_err("unable to allocate memory for subdevice pointers\n");
1471 err = -ENOMEM;
1472 goto vpif_unregister;
1473 }
1474
1475 if (!vpif_obj.config->asd_sizes) {
1476 i2c_adap = i2c_get_adapter(1);
1477 for (i = 0; i < subdev_count; i++) {
1478 subdevdata = &vpif_obj.config->subdev_info[i];
1479 vpif_obj.sd[i] =
1480 v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev,
1481 i2c_adap,
1482 &subdevdata->
1483 board_info,
1484 NULL);
1485
1486 if (!vpif_obj.sd[i]) {
1487 vpif_err("Error registering v4l2 subdevice\n");
1488 err = -ENODEV;
1489 goto probe_subdev_out;
1490 }
1491 v4l2_info(&vpif_obj.v4l2_dev,
1492 "registered sub device %s\n",
1493 subdevdata->name);
1494 }
1495 vpif_probe_complete();
1496 } else {
1497 vpif_obj.notifier.subdevs = vpif_obj.config->asd;
1498 vpif_obj.notifier.num_subdevs = vpif_obj.config->asd_sizes[0];
1499 vpif_obj.notifier.bound = vpif_async_bound;
1500 vpif_obj.notifier.complete = vpif_async_complete;
1501 err = v4l2_async_notifier_register(&vpif_obj.v4l2_dev,
1502 &vpif_obj.notifier);
1503 if (err) {
1504 vpif_err("Error registering async notifier\n");
1505 err = -EINVAL;
1506 goto probe_subdev_out;
1507 }
1508 }
1509
1510 return 0;
1511
1512 probe_subdev_out:
1513 /* free sub devices memory */
1514 kfree(vpif_obj.sd);
1515 vpif_unregister:
1516 v4l2_device_unregister(&vpif_obj.v4l2_dev);
1517
1518 return err;
1519 }
1520
1521 /**
1522 * vpif_remove() - driver remove handler
1523 * @device: ptr to platform device structure
1524 *
1525 * The vidoe device is unregistered
1526 */
1527 static int vpif_remove(struct platform_device *device)
1528 {
1529 struct common_obj *common;
1530 struct channel_obj *ch;
1531 int i;
1532
1533 v4l2_device_unregister(&vpif_obj.v4l2_dev);
1534
1535 kfree(vpif_obj.sd);
1536 /* un-register device */
1537 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1538 /* Get the pointer to the channel object */
1539 ch = vpif_obj.dev[i];
1540 common = &ch->common[VPIF_VIDEO_INDEX];
1541 /* Unregister video device */
1542 video_unregister_device(&ch->video_dev);
1543 kfree(vpif_obj.dev[i]);
1544 }
1545 return 0;
1546 }
1547
1548 #ifdef CONFIG_PM_SLEEP
1549 /**
1550 * vpif_suspend: vpif device suspend
1551 */
1552 static int vpif_suspend(struct device *dev)
1553 {
1554
1555 struct common_obj *common;
1556 struct channel_obj *ch;
1557 int i;
1558
1559 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1560 /* Get the pointer to the channel object */
1561 ch = vpif_obj.dev[i];
1562 common = &ch->common[VPIF_VIDEO_INDEX];
1563
1564 if (!vb2_start_streaming_called(&common->buffer_queue))
1565 continue;
1566
1567 mutex_lock(&common->lock);
1568 /* Disable channel */
1569 if (ch->channel_id == VPIF_CHANNEL0_VIDEO) {
1570 enable_channel0(0);
1571 channel0_intr_enable(0);
1572 }
1573 if (ch->channel_id == VPIF_CHANNEL1_VIDEO ||
1574 ycmux_mode == 2) {
1575 enable_channel1(0);
1576 channel1_intr_enable(0);
1577 }
1578 mutex_unlock(&common->lock);
1579 }
1580
1581 return 0;
1582 }
1583
1584 /*
1585 * vpif_resume: vpif device suspend
1586 */
1587 static int vpif_resume(struct device *dev)
1588 {
1589 struct common_obj *common;
1590 struct channel_obj *ch;
1591 int i;
1592
1593 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1594 /* Get the pointer to the channel object */
1595 ch = vpif_obj.dev[i];
1596 common = &ch->common[VPIF_VIDEO_INDEX];
1597
1598 if (!vb2_start_streaming_called(&common->buffer_queue))
1599 continue;
1600
1601 mutex_lock(&common->lock);
1602 /* Enable channel */
1603 if (ch->channel_id == VPIF_CHANNEL0_VIDEO) {
1604 enable_channel0(1);
1605 channel0_intr_enable(1);
1606 }
1607 if (ch->channel_id == VPIF_CHANNEL1_VIDEO ||
1608 ycmux_mode == 2) {
1609 enable_channel1(1);
1610 channel1_intr_enable(1);
1611 }
1612 mutex_unlock(&common->lock);
1613 }
1614
1615 return 0;
1616 }
1617 #endif
1618
1619 static SIMPLE_DEV_PM_OPS(vpif_pm_ops, vpif_suspend, vpif_resume);
1620
1621 static __refdata struct platform_driver vpif_driver = {
1622 .driver = {
1623 .name = VPIF_DRIVER_NAME,
1624 .pm = &vpif_pm_ops,
1625 },
1626 .probe = vpif_probe,
1627 .remove = vpif_remove,
1628 };
1629
1630 module_platform_driver(vpif_driver);
Linux with added FPC-III support