1 /*
2  * Copyright (C) 2010-2013 Bluecherry, LLC <http://www.bluecherrydvr.com>
3  *
4  * Original author:
5  * Ben Collins <bcollins@ubuntu.com>
6  *
7  * Additional work by:
8  * John Brooks <john.brooks@bluecherry.net>
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation; either version 2 of the License, or
13  * (at your option) any later version.
14  *
15  * This program is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  * GNU General Public License for more details.
19  */
20 
21 #include <linux/kernel.h>
22 #include <linux/module.h>
23 #include <linux/kthread.h>
24 #include <linux/freezer.h>
25 
26 #include <media/v4l2-ioctl.h>
27 #include <media/v4l2-common.h>
28 #include <media/v4l2-event.h>
29 #include <media/videobuf2-dma-sg.h>
30 
31 #include "solo6x10.h"
32 #include "solo6x10-tw28.h"
33 #include "solo6x10-jpeg.h"
34 
35 #define MIN_VID_BUFFERS		2
36 #define FRAME_BUF_SIZE		(196 * 1024)
37 #define MP4_QS			16
38 #define DMA_ALIGN		4096
39 
40 /* 6010 M4V */
41 static u8 vop_6010_ntsc_d1[] = {
42 	0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x20,
43 	0x02, 0x48, 0x1d, 0xc0, 0x00, 0x40, 0x00, 0x40,
44 	0x00, 0x40, 0x00, 0x80, 0x00, 0x97, 0x53, 0x04,
45 	0x1f, 0x4c, 0x58, 0x10, 0xf0, 0x71, 0x18, 0x3f,
46 };
47 
48 static u8 vop_6010_ntsc_cif[] = {
49 	0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x20,
50 	0x02, 0x48, 0x1d, 0xc0, 0x00, 0x40, 0x00, 0x40,
51 	0x00, 0x40, 0x00, 0x80, 0x00, 0x97, 0x53, 0x04,
52 	0x1f, 0x4c, 0x2c, 0x10, 0x78, 0x51, 0x18, 0x3f,
53 };
54 
55 static u8 vop_6010_pal_d1[] = {
56 	0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x20,
57 	0x02, 0x48, 0x15, 0xc0, 0x00, 0x40, 0x00, 0x40,
58 	0x00, 0x40, 0x00, 0x80, 0x00, 0x97, 0x53, 0x04,
59 	0x1f, 0x4c, 0x58, 0x11, 0x20, 0x71, 0x18, 0x3f,
60 };
61 
62 static u8 vop_6010_pal_cif[] = {
63 	0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x20,
64 	0x02, 0x48, 0x15, 0xc0, 0x00, 0x40, 0x00, 0x40,
65 	0x00, 0x40, 0x00, 0x80, 0x00, 0x97, 0x53, 0x04,
66 	0x1f, 0x4c, 0x2c, 0x10, 0x90, 0x51, 0x18, 0x3f,
67 };
68 
69 /* 6110 h.264 */
70 static u8 vop_6110_ntsc_d1[] = {
71 	0x00, 0x00, 0x00, 0x01, 0x67, 0x42, 0x00, 0x1e,
72 	0x9a, 0x74, 0x05, 0x81, 0xec, 0x80, 0x00, 0x00,
73 	0x00, 0x01, 0x68, 0xce, 0x32, 0x28, 0x00, 0x00,
74 };
75 
76 static u8 vop_6110_ntsc_cif[] = {
77 	0x00, 0x00, 0x00, 0x01, 0x67, 0x42, 0x00, 0x1e,
78 	0x9a, 0x74, 0x0b, 0x0f, 0xc8, 0x00, 0x00, 0x00,
79 	0x01, 0x68, 0xce, 0x32, 0x28, 0x00, 0x00, 0x00,
80 };
81 
82 static u8 vop_6110_pal_d1[] = {
83 	0x00, 0x00, 0x00, 0x01, 0x67, 0x42, 0x00, 0x1e,
84 	0x9a, 0x74, 0x05, 0x80, 0x93, 0x20, 0x00, 0x00,
85 	0x00, 0x01, 0x68, 0xce, 0x32, 0x28, 0x00, 0x00,
86 };
87 
88 static u8 vop_6110_pal_cif[] = {
89 	0x00, 0x00, 0x00, 0x01, 0x67, 0x42, 0x00, 0x1e,
90 	0x9a, 0x74, 0x0b, 0x04, 0xb2, 0x00, 0x00, 0x00,
91 	0x01, 0x68, 0xce, 0x32, 0x28, 0x00, 0x00, 0x00,
92 };
93 
94 typedef __le32 vop_header[16];
95 
96 struct solo_enc_buf {
97 	enum solo_enc_types	type;
98 	const vop_header	*vh;
99 	int			motion;
100 };
101 
102 static int solo_is_motion_on(struct solo_enc_dev *solo_enc)
103 {
104 	struct solo_dev *solo_dev = solo_enc->solo_dev;
105 
106 	return (solo_dev->motion_mask >> solo_enc->ch) & 1;
107 }
108 
109 static int solo_motion_detected(struct solo_enc_dev *solo_enc)
110 {
111 	struct solo_dev *solo_dev = solo_enc->solo_dev;
112 	unsigned long flags;
113 	u32 ch_mask = 1 << solo_enc->ch;
114 	int ret = 0;
115 
116 	spin_lock_irqsave(&solo_enc->motion_lock, flags);
117 	if (solo_reg_read(solo_dev, SOLO_VI_MOT_STATUS) & ch_mask) {
118 		solo_reg_write(solo_dev, SOLO_VI_MOT_CLEAR, ch_mask);
119 		ret = 1;
120 	}
121 	spin_unlock_irqrestore(&solo_enc->motion_lock, flags);
122 
123 	return ret;
124 }
125 
126 static void solo_motion_toggle(struct solo_enc_dev *solo_enc, int on)
127 {
128 	struct solo_dev *solo_dev = solo_enc->solo_dev;
129 	u32 mask = 1 << solo_enc->ch;
130 	unsigned long flags;
131 
132 	spin_lock_irqsave(&solo_enc->motion_lock, flags);
133 
134 	if (on)
135 		solo_dev->motion_mask |= mask;
136 	else
137 		solo_dev->motion_mask &= ~mask;
138 
139 	solo_reg_write(solo_dev, SOLO_VI_MOT_CLEAR, mask);
140 
141 	solo_reg_write(solo_dev, SOLO_VI_MOT_ADR,
142 		       SOLO_VI_MOTION_EN(solo_dev->motion_mask) |
143 		       (SOLO_MOTION_EXT_ADDR(solo_dev) >> 16));
144 
145 	spin_unlock_irqrestore(&solo_enc->motion_lock, flags);
146 }
147 
148 void solo_update_mode(struct solo_enc_dev *solo_enc)
149 {
150 	struct solo_dev *solo_dev = solo_enc->solo_dev;
151 	int vop_len;
152 	u8 *vop;
153 
154 	solo_enc->interlaced = (solo_enc->mode & 0x08) ? 1 : 0;
155 	solo_enc->bw_weight = max(solo_dev->fps / solo_enc->interval, 1);
156 
157 	if (solo_enc->mode == SOLO_ENC_MODE_CIF) {
158 		solo_enc->width = solo_dev->video_hsize >> 1;
159 		solo_enc->height = solo_dev->video_vsize;
160 		if (solo_dev->type == SOLO_DEV_6110) {
161 			if (solo_dev->video_type == SOLO_VO_FMT_TYPE_NTSC) {
162 				vop = vop_6110_ntsc_cif;
163 				vop_len = sizeof(vop_6110_ntsc_cif);
164 			} else {
165 				vop = vop_6110_pal_cif;
166 				vop_len = sizeof(vop_6110_pal_cif);
167 			}
168 		} else {
169 			if (solo_dev->video_type == SOLO_VO_FMT_TYPE_NTSC) {
170 				vop = vop_6010_ntsc_cif;
171 				vop_len = sizeof(vop_6010_ntsc_cif);
172 			} else {
173 				vop = vop_6010_pal_cif;
174 				vop_len = sizeof(vop_6010_pal_cif);
175 			}
176 		}
177 	} else {
178 		solo_enc->width = solo_dev->video_hsize;
179 		solo_enc->height = solo_dev->video_vsize << 1;
180 		solo_enc->bw_weight <<= 2;
181 		if (solo_dev->type == SOLO_DEV_6110) {
182 			if (solo_dev->video_type == SOLO_VO_FMT_TYPE_NTSC) {
183 				vop = vop_6110_ntsc_d1;
184 				vop_len = sizeof(vop_6110_ntsc_d1);
185 			} else {
186 				vop = vop_6110_pal_d1;
187 				vop_len = sizeof(vop_6110_pal_d1);
188 			}
189 		} else {
190 			if (solo_dev->video_type == SOLO_VO_FMT_TYPE_NTSC) {
191 				vop = vop_6010_ntsc_d1;
192 				vop_len = sizeof(vop_6010_ntsc_d1);
193 			} else {
194 				vop = vop_6010_pal_d1;
195 				vop_len = sizeof(vop_6010_pal_d1);
196 			}
197 		}
198 	}
199 
200 	memcpy(solo_enc->vop, vop, vop_len);
201 
202 	/* Some fixups for 6010/M4V */
203 	if (solo_dev->type == SOLO_DEV_6010) {
204 		u16 fps = solo_dev->fps * 1000;
205 		u16 interval = solo_enc->interval * 1000;
206 
207 		vop = solo_enc->vop;
208 
209 		/* Frame rate and interval */
210 		vop[22] = fps >> 4;
211 		vop[23] = ((fps << 4) & 0xf0) | 0x0c
212 			| ((interval >> 13) & 0x3);
213 		vop[24] = (interval >> 5) & 0xff;
214 		vop[25] = ((interval << 3) & 0xf8) | 0x04;
215 	}
216 
217 	solo_enc->vop_len = vop_len;
218 
219 	/* Now handle the jpeg header */
220 	vop = solo_enc->jpeg_header;
221 	vop[SOF0_START + 5] = 0xff & (solo_enc->height >> 8);
222 	vop[SOF0_START + 6] = 0xff & solo_enc->height;
223 	vop[SOF0_START + 7] = 0xff & (solo_enc->width >> 8);
224 	vop[SOF0_START + 8] = 0xff & solo_enc->width;
225 
226 	memcpy(vop + DQT_START,
227 	       jpeg_dqt[solo_g_jpeg_qp(solo_dev, solo_enc->ch)], DQT_LEN);
228 }
229 
230 static int solo_enc_on(struct solo_enc_dev *solo_enc)
231 {
232 	u8 ch = solo_enc->ch;
233 	struct solo_dev *solo_dev = solo_enc->solo_dev;
234 	u8 interval;
235 
236 	solo_update_mode(solo_enc);
237 
238 	/* Make sure to do a bandwidth check */
239 	if (solo_enc->bw_weight > solo_dev->enc_bw_remain)
240 		return -EBUSY;
241 	solo_enc->sequence = 0;
242 	solo_dev->enc_bw_remain -= solo_enc->bw_weight;
243 
244 	if (solo_enc->type == SOLO_ENC_TYPE_EXT)
245 		solo_reg_write(solo_dev, SOLO_CAP_CH_COMP_ENA_E(ch), 1);
246 
247 	/* Disable all encoding for this channel */
248 	solo_reg_write(solo_dev, SOLO_CAP_CH_SCALE(ch), 0);
249 
250 	/* Common for both std and ext encoding */
251 	solo_reg_write(solo_dev, SOLO_VE_CH_INTL(ch),
252 		       solo_enc->interlaced ? 1 : 0);
253 
254 	if (solo_enc->interlaced)
255 		interval = solo_enc->interval - 1;
256 	else
257 		interval = solo_enc->interval;
258 
259 	/* Standard encoding only */
260 	solo_reg_write(solo_dev, SOLO_VE_CH_GOP(ch), solo_enc->gop);
261 	solo_reg_write(solo_dev, SOLO_VE_CH_QP(ch), solo_enc->qp);
262 	solo_reg_write(solo_dev, SOLO_CAP_CH_INTV(ch), interval);
263 
264 	/* Extended encoding only */
265 	solo_reg_write(solo_dev, SOLO_VE_CH_GOP_E(ch), solo_enc->gop);
266 	solo_reg_write(solo_dev, SOLO_VE_CH_QP_E(ch), solo_enc->qp);
267 	solo_reg_write(solo_dev, SOLO_CAP_CH_INTV_E(ch), interval);
268 
269 	/* Enables the standard encoder */
270 	solo_reg_write(solo_dev, SOLO_CAP_CH_SCALE(ch), solo_enc->mode);
271 
272 	return 0;
273 }
274 
275 static void solo_enc_off(struct solo_enc_dev *solo_enc)
276 {
277 	struct solo_dev *solo_dev = solo_enc->solo_dev;
278 
279 	solo_dev->enc_bw_remain += solo_enc->bw_weight;
280 
281 	solo_reg_write(solo_dev, SOLO_CAP_CH_SCALE(solo_enc->ch), 0);
282 	solo_reg_write(solo_dev, SOLO_CAP_CH_COMP_ENA_E(solo_enc->ch), 0);
283 }
284 
285 static int enc_get_mpeg_dma(struct solo_dev *solo_dev, dma_addr_t dma,
286 			      unsigned int off, unsigned int size)
287 {
288 	int ret;
289 
290 	if (off > SOLO_MP4E_EXT_SIZE(solo_dev))
291 		return -EINVAL;
292 
293 	/* Single shot */
294 	if (off + size <= SOLO_MP4E_EXT_SIZE(solo_dev)) {
295 		return solo_p2m_dma_t(solo_dev, 0, dma,
296 				      SOLO_MP4E_EXT_ADDR(solo_dev) + off, size,
297 				      0, 0);
298 	}
299 
300 	/* Buffer wrap */
301 	ret = solo_p2m_dma_t(solo_dev, 0, dma,
302 			     SOLO_MP4E_EXT_ADDR(solo_dev) + off,
303 			     SOLO_MP4E_EXT_SIZE(solo_dev) - off, 0, 0);
304 
305 	if (!ret) {
306 		ret = solo_p2m_dma_t(solo_dev, 0,
307 			     dma + SOLO_MP4E_EXT_SIZE(solo_dev) - off,
308 			     SOLO_MP4E_EXT_ADDR(solo_dev),
309 			     size + off - SOLO_MP4E_EXT_SIZE(solo_dev), 0, 0);
310 	}
311 
312 	return ret;
313 }
314 
315 /* Build a descriptor queue out of an SG list and send it to the P2M for
316  * processing. */
317 static int solo_send_desc(struct solo_enc_dev *solo_enc, int skip,
318 			  struct sg_table *vbuf, int off, int size,
319 			  unsigned int base, unsigned int base_size)
320 {
321 	struct solo_dev *solo_dev = solo_enc->solo_dev;
322 	struct scatterlist *sg;
323 	int i;
324 	int ret;
325 
326 	if (WARN_ON_ONCE(size > FRAME_BUF_SIZE))
327 		return -EINVAL;
328 
329 	solo_enc->desc_count = 1;
330 
331 	for_each_sg(vbuf->sgl, sg, vbuf->nents, i) {
332 		struct solo_p2m_desc *desc;
333 		dma_addr_t dma;
334 		int len;
335 		int left = base_size - off;
336 
337 		desc = &solo_enc->desc_items[solo_enc->desc_count++];
338 		dma = sg_dma_address(sg);
339 		len = sg_dma_len(sg);
340 
341 		/* We assume this is smaller than the scatter size */
342 		BUG_ON(skip >= len);
343 		if (skip) {
344 			len -= skip;
345 			dma += skip;
346 			size -= skip;
347 			skip = 0;
348 		}
349 
350 		len = min(len, size);
351 
352 		if (len <= left) {
353 			/* Single descriptor */
354 			solo_p2m_fill_desc(desc, 0, dma, base + off,
355 					   len, 0, 0);
356 		} else {
357 			/* Buffer wrap */
358 			/* XXX: Do these as separate DMA requests, to avoid
359 			   timeout errors triggered by awkwardly sized
360 			   descriptors. See
361 			   <https://github.com/bluecherrydvr/solo6x10/issues/8>
362 			 */
363 			ret = solo_p2m_dma_t(solo_dev, 0, dma, base + off,
364 					     left, 0, 0);
365 			if (ret)
366 				return ret;
367 
368 			ret = solo_p2m_dma_t(solo_dev, 0, dma + left, base,
369 					     len - left, 0, 0);
370 			if (ret)
371 				return ret;
372 
373 			solo_enc->desc_count--;
374 		}
375 
376 		size -= len;
377 		if (size <= 0)
378 			break;
379 
380 		off += len;
381 		if (off >= base_size)
382 			off -= base_size;
383 
384 		/* Because we may use two descriptors per loop */
385 		if (solo_enc->desc_count >= (solo_enc->desc_nelts - 1)) {
386 			ret = solo_p2m_dma_desc(solo_dev, solo_enc->desc_items,
387 						solo_enc->desc_dma,
388 						solo_enc->desc_count - 1);
389 			if (ret)
390 				return ret;
391 			solo_enc->desc_count = 1;
392 		}
393 	}
394 
395 	if (solo_enc->desc_count <= 1)
396 		return 0;
397 
398 	return solo_p2m_dma_desc(solo_dev, solo_enc->desc_items,
399 			solo_enc->desc_dma, solo_enc->desc_count - 1);
400 }
401 
402 /* Extract values from VOP header - VE_STATUSxx */
403 static inline int vop_interlaced(const vop_header *vh)
404 {
405 	return (__le32_to_cpu((*vh)[0]) >> 30) & 1;
406 }
407 
408 static inline u8 vop_channel(const vop_header *vh)
409 {
410 	return (__le32_to_cpu((*vh)[0]) >> 24) & 0x1F;
411 }
412 
413 static inline u8 vop_type(const vop_header *vh)
414 {
415 	return (__le32_to_cpu((*vh)[0]) >> 22) & 3;
416 }
417 
418 static inline u32 vop_mpeg_size(const vop_header *vh)
419 {
420 	return __le32_to_cpu((*vh)[0]) & 0xFFFFF;
421 }
422 
423 static inline u8 vop_hsize(const vop_header *vh)
424 {
425 	return (__le32_to_cpu((*vh)[1]) >> 8) & 0xFF;
426 }
427 
428 static inline u8 vop_vsize(const vop_header *vh)
429 {
430 	return __le32_to_cpu((*vh)[1]) & 0xFF;
431 }
432 
433 static inline u32 vop_mpeg_offset(const vop_header *vh)
434 {
435 	return __le32_to_cpu((*vh)[2]);
436 }
437 
438 static inline u32 vop_jpeg_offset(const vop_header *vh)
439 {
440 	return __le32_to_cpu((*vh)[3]);
441 }
442 
443 static inline u32 vop_jpeg_size(const vop_header *vh)
444 {
445 	return __le32_to_cpu((*vh)[4]) & 0xFFFFF;
446 }
447 
448 static inline u32 vop_sec(const vop_header *vh)
449 {
450 	return __le32_to_cpu((*vh)[5]);
451 }
452 
453 static inline u32 vop_usec(const vop_header *vh)
454 {
455 	return __le32_to_cpu((*vh)[6]);
456 }
457 
458 static int solo_fill_jpeg(struct solo_enc_dev *solo_enc,
459 			  struct vb2_buffer *vb, const vop_header *vh)
460 {
461 	struct solo_dev *solo_dev = solo_enc->solo_dev;
462 	struct sg_table *vbuf = vb2_dma_sg_plane_desc(vb, 0);
463 	int frame_size;
464 
465 	vb->v4l2_buf.flags |= V4L2_BUF_FLAG_KEYFRAME;
466 
467 	if (vb2_plane_size(vb, 0) < vop_jpeg_size(vh) + solo_enc->jpeg_len)
468 		return -EIO;
469 
470 	frame_size = ALIGN(vop_jpeg_size(vh) + solo_enc->jpeg_len, DMA_ALIGN);
471 	vb2_set_plane_payload(vb, 0, vop_jpeg_size(vh) + solo_enc->jpeg_len);
472 
473 	return solo_send_desc(solo_enc, solo_enc->jpeg_len, vbuf,
474 			     vop_jpeg_offset(vh) - SOLO_JPEG_EXT_ADDR(solo_dev),
475 			     frame_size, SOLO_JPEG_EXT_ADDR(solo_dev),
476 			     SOLO_JPEG_EXT_SIZE(solo_dev));
477 }
478 
479 static int solo_fill_mpeg(struct solo_enc_dev *solo_enc,
480 		struct vb2_buffer *vb, const vop_header *vh)
481 {
482 	struct solo_dev *solo_dev = solo_enc->solo_dev;
483 	struct sg_table *vbuf = vb2_dma_sg_plane_desc(vb, 0);
484 	int frame_off, frame_size;
485 	int skip = 0;
486 
487 	if (vb2_plane_size(vb, 0) < vop_mpeg_size(vh))
488 		return -EIO;
489 
490 	/* If this is a key frame, add extra header */
491 	vb->v4l2_buf.flags &= ~(V4L2_BUF_FLAG_KEYFRAME | V4L2_BUF_FLAG_PFRAME |
492 		V4L2_BUF_FLAG_BFRAME);
493 	if (!vop_type(vh)) {
494 		skip = solo_enc->vop_len;
495 		vb->v4l2_buf.flags |= V4L2_BUF_FLAG_KEYFRAME;
496 		vb2_set_plane_payload(vb, 0, vop_mpeg_size(vh) +
497 			solo_enc->vop_len);
498 	} else {
499 		vb->v4l2_buf.flags |= V4L2_BUF_FLAG_PFRAME;
500 		vb2_set_plane_payload(vb, 0, vop_mpeg_size(vh));
501 	}
502 
503 	/* Now get the actual mpeg payload */
504 	frame_off = (vop_mpeg_offset(vh) - SOLO_MP4E_EXT_ADDR(solo_dev) +
505 		sizeof(*vh)) % SOLO_MP4E_EXT_SIZE(solo_dev);
506 	frame_size = ALIGN(vop_mpeg_size(vh) + skip, DMA_ALIGN);
507 
508 	return solo_send_desc(solo_enc, skip, vbuf, frame_off, frame_size,
509 			SOLO_MP4E_EXT_ADDR(solo_dev),
510 			SOLO_MP4E_EXT_SIZE(solo_dev));
511 }
512 
513 static int solo_enc_fillbuf(struct solo_enc_dev *solo_enc,
514 			    struct vb2_buffer *vb, struct solo_enc_buf *enc_buf)
515 {
516 	const vop_header *vh = enc_buf->vh;
517 	int ret;
518 
519 	switch (solo_enc->fmt) {
520 	case V4L2_PIX_FMT_MPEG4:
521 	case V4L2_PIX_FMT_H264:
522 		ret = solo_fill_mpeg(solo_enc, vb, vh);
523 		break;
524 	default: /* V4L2_PIX_FMT_MJPEG */
525 		ret = solo_fill_jpeg(solo_enc, vb, vh);
526 		break;
527 	}
528 
529 	if (!ret) {
530 		vb->v4l2_buf.sequence = solo_enc->sequence++;
531 		vb->v4l2_buf.timestamp.tv_sec = vop_sec(vh);
532 		vb->v4l2_buf.timestamp.tv_usec = vop_usec(vh);
533 
534 		/* Check for motion flags */
535 		if (solo_is_motion_on(solo_enc) && enc_buf->motion) {
536 			struct v4l2_event ev = {
537 				.type = V4L2_EVENT_MOTION_DET,
538 				.u.motion_det = {
539 					.flags = V4L2_EVENT_MD_FL_HAVE_FRAME_SEQ,
540 					.frame_sequence = vb->v4l2_buf.sequence,
541 					.region_mask = enc_buf->motion ? 1 : 0,
542 				},
543 			};
544 
545 			v4l2_event_queue(solo_enc->vfd, &ev);
546 		}
547 	}
548 
549 	vb2_buffer_done(vb, ret ? VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE);
550 
551 	return ret;
552 }
553 
554 static void solo_enc_handle_one(struct solo_enc_dev *solo_enc,
555 				struct solo_enc_buf *enc_buf)
556 {
557 	struct solo_vb2_buf *vb;
558 	unsigned long flags;
559 
560 	mutex_lock(&solo_enc->lock);
561 	if (solo_enc->type != enc_buf->type)
562 		goto unlock;
563 
564 	spin_lock_irqsave(&solo_enc->av_lock, flags);
565 	if (list_empty(&solo_enc->vidq_active)) {
566 		spin_unlock_irqrestore(&solo_enc->av_lock, flags);
567 		goto unlock;
568 	}
569 	vb = list_first_entry(&solo_enc->vidq_active, struct solo_vb2_buf,
570 		list);
571 	list_del(&vb->list);
572 	spin_unlock_irqrestore(&solo_enc->av_lock, flags);
573 
574 	solo_enc_fillbuf(solo_enc, &vb->vb, enc_buf);
575 unlock:
576 	mutex_unlock(&solo_enc->lock);
577 }
578 
579 void solo_enc_v4l2_isr(struct solo_dev *solo_dev)
580 {
581 	wake_up_interruptible_all(&solo_dev->ring_thread_wait);
582 }
583 
584 static void solo_handle_ring(struct solo_dev *solo_dev)
585 {
586 	for (;;) {
587 		struct solo_enc_dev *solo_enc;
588 		struct solo_enc_buf enc_buf;
589 		u32 mpeg_current, off;
590 		u8 ch;
591 		u8 cur_q;
592 
593 		/* Check if the hardware has any new ones in the queue */
594 		cur_q = solo_reg_read(solo_dev, SOLO_VE_STATE(11)) & 0xff;
595 		if (cur_q == solo_dev->enc_idx)
596 			break;
597 
598 		mpeg_current = solo_reg_read(solo_dev,
599 					SOLO_VE_MPEG4_QUE(solo_dev->enc_idx));
600 		solo_dev->enc_idx = (solo_dev->enc_idx + 1) % MP4_QS;
601 
602 		ch = (mpeg_current >> 24) & 0x1f;
603 		off = mpeg_current & 0x00ffffff;
604 
605 		if (ch >= SOLO_MAX_CHANNELS) {
606 			ch -= SOLO_MAX_CHANNELS;
607 			enc_buf.type = SOLO_ENC_TYPE_EXT;
608 		} else
609 			enc_buf.type = SOLO_ENC_TYPE_STD;
610 
611 		solo_enc = solo_dev->v4l2_enc[ch];
612 		if (solo_enc == NULL) {
613 			dev_err(&solo_dev->pdev->dev,
614 				"Got spurious packet for channel %d\n", ch);
615 			continue;
616 		}
617 
618 		/* FAIL... */
619 		if (enc_get_mpeg_dma(solo_dev, solo_dev->vh_dma, off,
620 				     sizeof(vop_header)))
621 			continue;
622 
623 		enc_buf.vh = solo_dev->vh_buf;
624 
625 		/* Sanity check */
626 		if (vop_mpeg_offset(enc_buf.vh) !=
627 			SOLO_MP4E_EXT_ADDR(solo_dev) + off)
628 			continue;
629 
630 		if (solo_motion_detected(solo_enc))
631 			enc_buf.motion = 1;
632 		else
633 			enc_buf.motion = 0;
634 
635 		solo_enc_handle_one(solo_enc, &enc_buf);
636 	}
637 }
638 
639 static int solo_ring_thread(void *data)
640 {
641 	struct solo_dev *solo_dev = data;
642 	DECLARE_WAITQUEUE(wait, current);
643 
644 	set_freezable();
645 	add_wait_queue(&solo_dev->ring_thread_wait, &wait);
646 
647 	for (;;) {
648 		long timeout = schedule_timeout_interruptible(HZ);
649 
650 		if (timeout == -ERESTARTSYS || kthread_should_stop())
651 			break;
652 		solo_handle_ring(solo_dev);
653 		try_to_freeze();
654 	}
655 
656 	remove_wait_queue(&solo_dev->ring_thread_wait, &wait);
657 
658 	return 0;
659 }
660 
661 static int solo_enc_queue_setup(struct vb2_queue *q,
662 				const struct v4l2_format *fmt,
663 				unsigned int *num_buffers,
664 				unsigned int *num_planes, unsigned int sizes[],
665 				void *alloc_ctxs[])
666 {
667 	struct solo_enc_dev *solo_enc = vb2_get_drv_priv(q);
668 
669 	sizes[0] = FRAME_BUF_SIZE;
670 	alloc_ctxs[0] = solo_enc->alloc_ctx;
671 	*num_planes = 1;
672 
673 	if (*num_buffers < MIN_VID_BUFFERS)
674 		*num_buffers = MIN_VID_BUFFERS;
675 
676 	return 0;
677 }
678 
679 static void solo_enc_buf_queue(struct vb2_buffer *vb)
680 {
681 	struct vb2_queue *vq = vb->vb2_queue;
682 	struct solo_enc_dev *solo_enc = vb2_get_drv_priv(vq);
683 	struct solo_vb2_buf *solo_vb =
684 		container_of(vb, struct solo_vb2_buf, vb);
685 
686 	spin_lock(&solo_enc->av_lock);
687 	list_add_tail(&solo_vb->list, &solo_enc->vidq_active);
688 	spin_unlock(&solo_enc->av_lock);
689 }
690 
691 static int solo_ring_start(struct solo_dev *solo_dev)
692 {
693 	solo_dev->ring_thread = kthread_run(solo_ring_thread, solo_dev,
694 					    SOLO6X10_NAME "_ring");
695 	if (IS_ERR(solo_dev->ring_thread)) {
696 		int err = PTR_ERR(solo_dev->ring_thread);
697 
698 		solo_dev->ring_thread = NULL;
699 		return err;
700 	}
701 
702 	solo_irq_on(solo_dev, SOLO_IRQ_ENCODER);
703 
704 	return 0;
705 }
706 
707 static void solo_ring_stop(struct solo_dev *solo_dev)
708 {
709 	if (solo_dev->ring_thread) {
710 		kthread_stop(solo_dev->ring_thread);
711 		solo_dev->ring_thread = NULL;
712 	}
713 
714 	solo_irq_off(solo_dev, SOLO_IRQ_ENCODER);
715 }
716 
717 static int solo_enc_start_streaming(struct vb2_queue *q, unsigned int count)
718 {
719 	struct solo_enc_dev *solo_enc = vb2_get_drv_priv(q);
720 
721 	return solo_enc_on(solo_enc);
722 }
723 
724 static void solo_enc_stop_streaming(struct vb2_queue *q)
725 {
726 	struct solo_enc_dev *solo_enc = vb2_get_drv_priv(q);
727 	unsigned long flags;
728 
729 	spin_lock_irqsave(&solo_enc->av_lock, flags);
730 	solo_enc_off(solo_enc);
731 	while (!list_empty(&solo_enc->vidq_active)) {
732 		struct solo_vb2_buf *buf = list_entry(
733 				solo_enc->vidq_active.next,
734 				struct solo_vb2_buf, list);
735 
736 		list_del(&buf->list);
737 		vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
738 	}
739 	spin_unlock_irqrestore(&solo_enc->av_lock, flags);
740 }
741 
742 static void solo_enc_buf_finish(struct vb2_buffer *vb)
743 {
744 	struct solo_enc_dev *solo_enc = vb2_get_drv_priv(vb->vb2_queue);
745 	struct sg_table *vbuf = vb2_dma_sg_plane_desc(vb, 0);
746 
747 	switch (solo_enc->fmt) {
748 	case V4L2_PIX_FMT_MPEG4:
749 	case V4L2_PIX_FMT_H264:
750 		if (vb->v4l2_buf.flags & V4L2_BUF_FLAG_KEYFRAME)
751 			sg_copy_from_buffer(vbuf->sgl, vbuf->nents,
752 					solo_enc->vop, solo_enc->vop_len);
753 		break;
754 	default: /* V4L2_PIX_FMT_MJPEG */
755 		sg_copy_from_buffer(vbuf->sgl, vbuf->nents,
756 				solo_enc->jpeg_header, solo_enc->jpeg_len);
757 		break;
758 	}
759 }
760 
761 static struct vb2_ops solo_enc_video_qops = {
762 	.queue_setup	= solo_enc_queue_setup,
763 	.buf_queue	= solo_enc_buf_queue,
764 	.buf_finish	= solo_enc_buf_finish,
765 	.start_streaming = solo_enc_start_streaming,
766 	.stop_streaming = solo_enc_stop_streaming,
767 	.wait_prepare	= vb2_ops_wait_prepare,
768 	.wait_finish	= vb2_ops_wait_finish,
769 };
770 
771 static int solo_enc_querycap(struct file *file, void  *priv,
772 			     struct v4l2_capability *cap)
773 {
774 	struct solo_enc_dev *solo_enc = video_drvdata(file);
775 	struct solo_dev *solo_dev = solo_enc->solo_dev;
776 
777 	strcpy(cap->driver, SOLO6X10_NAME);
778 	snprintf(cap->card, sizeof(cap->card), "Softlogic 6x10 Enc %d",
779 		 solo_enc->ch);
780 	snprintf(cap->bus_info, sizeof(cap->bus_info), "PCI:%s",
781 		 pci_name(solo_dev->pdev));
782 	cap->device_caps = V4L2_CAP_VIDEO_CAPTURE |
783 			V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
784 	cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
785 	return 0;
786 }
787 
788 static int solo_enc_enum_input(struct file *file, void *priv,
789 			       struct v4l2_input *input)
790 {
791 	struct solo_enc_dev *solo_enc = video_drvdata(file);
792 	struct solo_dev *solo_dev = solo_enc->solo_dev;
793 
794 	if (input->index)
795 		return -EINVAL;
796 
797 	snprintf(input->name, sizeof(input->name), "Encoder %d",
798 		 solo_enc->ch + 1);
799 	input->type = V4L2_INPUT_TYPE_CAMERA;
800 	input->std = solo_enc->vfd->tvnorms;
801 
802 	if (!tw28_get_video_status(solo_dev, solo_enc->ch))
803 		input->status = V4L2_IN_ST_NO_SIGNAL;
804 
805 	return 0;
806 }
807 
808 static int solo_enc_set_input(struct file *file, void *priv,
809 			      unsigned int index)
810 {
811 	if (index)
812 		return -EINVAL;
813 
814 	return 0;
815 }
816 
817 static int solo_enc_get_input(struct file *file, void *priv,
818 			      unsigned int *index)
819 {
820 	*index = 0;
821 
822 	return 0;
823 }
824 
825 static int solo_enc_enum_fmt_cap(struct file *file, void *priv,
826 				 struct v4l2_fmtdesc *f)
827 {
828 	struct solo_enc_dev *solo_enc = video_drvdata(file);
829 	int dev_type = solo_enc->solo_dev->type;
830 
831 	switch (f->index) {
832 	case 0:
833 		switch (dev_type) {
834 		case SOLO_DEV_6010:
835 			f->pixelformat = V4L2_PIX_FMT_MPEG4;
836 			strcpy(f->description, "MPEG-4 part 2");
837 			break;
838 		case SOLO_DEV_6110:
839 			f->pixelformat = V4L2_PIX_FMT_H264;
840 			strcpy(f->description, "H.264");
841 			break;
842 		}
843 		break;
844 	case 1:
845 		f->pixelformat = V4L2_PIX_FMT_MJPEG;
846 		strcpy(f->description, "MJPEG");
847 		break;
848 	default:
849 		return -EINVAL;
850 	}
851 
852 	f->flags = V4L2_FMT_FLAG_COMPRESSED;
853 
854 	return 0;
855 }
856 
857 static inline int solo_valid_pixfmt(u32 pixfmt, int dev_type)
858 {
859 	return (pixfmt == V4L2_PIX_FMT_H264 && dev_type == SOLO_DEV_6110)
860 		|| (pixfmt == V4L2_PIX_FMT_MPEG4 && dev_type == SOLO_DEV_6010)
861 		|| pixfmt == V4L2_PIX_FMT_MJPEG ? 0 : -EINVAL;
862 }
863 
864 static int solo_enc_try_fmt_cap(struct file *file, void *priv,
865 			    struct v4l2_format *f)
866 {
867 	struct solo_enc_dev *solo_enc = video_drvdata(file);
868 	struct solo_dev *solo_dev = solo_enc->solo_dev;
869 	struct v4l2_pix_format *pix = &f->fmt.pix;
870 
871 	if (solo_valid_pixfmt(pix->pixelformat, solo_dev->type))
872 		return -EINVAL;
873 
874 	if (pix->width < solo_dev->video_hsize ||
875 	    pix->height < solo_dev->video_vsize << 1) {
876 		/* Default to CIF 1/2 size */
877 		pix->width = solo_dev->video_hsize >> 1;
878 		pix->height = solo_dev->video_vsize;
879 	} else {
880 		/* Full frame */
881 		pix->width = solo_dev->video_hsize;
882 		pix->height = solo_dev->video_vsize << 1;
883 	}
884 
885 	switch (pix->field) {
886 	case V4L2_FIELD_NONE:
887 	case V4L2_FIELD_INTERLACED:
888 		break;
889 	case V4L2_FIELD_ANY:
890 	default:
891 		pix->field = V4L2_FIELD_INTERLACED;
892 		break;
893 	}
894 
895 	/* Just set these */
896 	pix->colorspace = V4L2_COLORSPACE_SMPTE170M;
897 	pix->sizeimage = FRAME_BUF_SIZE;
898 	pix->bytesperline = 0;
899 	pix->priv = 0;
900 
901 	return 0;
902 }
903 
904 static int solo_enc_set_fmt_cap(struct file *file, void *priv,
905 				struct v4l2_format *f)
906 {
907 	struct solo_enc_dev *solo_enc = video_drvdata(file);
908 	struct solo_dev *solo_dev = solo_enc->solo_dev;
909 	struct v4l2_pix_format *pix = &f->fmt.pix;
910 	int ret;
911 
912 	if (vb2_is_busy(&solo_enc->vidq))
913 		return -EBUSY;
914 
915 	ret = solo_enc_try_fmt_cap(file, priv, f);
916 	if (ret)
917 		return ret;
918 
919 	if (pix->width == solo_dev->video_hsize)
920 		solo_enc->mode = SOLO_ENC_MODE_D1;
921 	else
922 		solo_enc->mode = SOLO_ENC_MODE_CIF;
923 
924 	/* This does not change the encoder at all */
925 	solo_enc->fmt = pix->pixelformat;
926 
927 	/*
928 	 * More information is needed about these 'extended' types. As far
929 	 * as I can tell these are basically additional video streams with
930 	 * different MPEG encoding attributes that can run in parallel with
931 	 * the main stream. If so, then this should be implemented as a
932 	 * second video node. Abusing priv like this is certainly not the
933 	 * right approach.
934 	if (pix->priv)
935 		solo_enc->type = SOLO_ENC_TYPE_EXT;
936 	 */
937 	solo_update_mode(solo_enc);
938 	return 0;
939 }
940 
941 static int solo_enc_get_fmt_cap(struct file *file, void *priv,
942 				struct v4l2_format *f)
943 {
944 	struct solo_enc_dev *solo_enc = video_drvdata(file);
945 	struct v4l2_pix_format *pix = &f->fmt.pix;
946 
947 	pix->width = solo_enc->width;
948 	pix->height = solo_enc->height;
949 	pix->pixelformat = solo_enc->fmt;
950 	pix->field = solo_enc->interlaced ? V4L2_FIELD_INTERLACED :
951 		     V4L2_FIELD_NONE;
952 	pix->sizeimage = FRAME_BUF_SIZE;
953 	pix->colorspace = V4L2_COLORSPACE_SMPTE170M;
954 	pix->priv = 0;
955 
956 	return 0;
957 }
958 
959 static int solo_enc_g_std(struct file *file, void *priv, v4l2_std_id *i)
960 {
961 	struct solo_enc_dev *solo_enc = video_drvdata(file);
962 	struct solo_dev *solo_dev = solo_enc->solo_dev;
963 
964 	if (solo_dev->video_type == SOLO_VO_FMT_TYPE_NTSC)
965 		*i = V4L2_STD_NTSC_M;
966 	else
967 		*i = V4L2_STD_PAL;
968 	return 0;
969 }
970 
971 static int solo_enc_s_std(struct file *file, void *priv, v4l2_std_id std)
972 {
973 	struct solo_enc_dev *solo_enc = video_drvdata(file);
974 
975 	return solo_set_video_type(solo_enc->solo_dev, std & V4L2_STD_625_50);
976 }
977 
978 static int solo_enum_framesizes(struct file *file, void *priv,
979 				struct v4l2_frmsizeenum *fsize)
980 {
981 	struct solo_enc_dev *solo_enc = video_drvdata(file);
982 	struct solo_dev *solo_dev = solo_enc->solo_dev;
983 
984 	if (solo_valid_pixfmt(fsize->pixel_format, solo_dev->type))
985 		return -EINVAL;
986 
987 	switch (fsize->index) {
988 	case 0:
989 		fsize->discrete.width = solo_dev->video_hsize >> 1;
990 		fsize->discrete.height = solo_dev->video_vsize;
991 		break;
992 	case 1:
993 		fsize->discrete.width = solo_dev->video_hsize;
994 		fsize->discrete.height = solo_dev->video_vsize << 1;
995 		break;
996 	default:
997 		return -EINVAL;
998 	}
999 
1000 	fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
1001 
1002 	return 0;
1003 }
1004 
1005 static int solo_enum_frameintervals(struct file *file, void *priv,
1006 				    struct v4l2_frmivalenum *fintv)
1007 {
1008 	struct solo_enc_dev *solo_enc = video_drvdata(file);
1009 	struct solo_dev *solo_dev = solo_enc->solo_dev;
1010 
1011 	if (solo_valid_pixfmt(fintv->pixel_format, solo_dev->type))
1012 		return -EINVAL;
1013 	if (fintv->index)
1014 		return -EINVAL;
1015 	if ((fintv->width != solo_dev->video_hsize >> 1 ||
1016 	     fintv->height != solo_dev->video_vsize) &&
1017 	    (fintv->width != solo_dev->video_hsize ||
1018 	     fintv->height != solo_dev->video_vsize << 1))
1019 		return -EINVAL;
1020 
1021 	fintv->type = V4L2_FRMIVAL_TYPE_STEPWISE;
1022 
1023 	fintv->stepwise.min.numerator = 1;
1024 	fintv->stepwise.min.denominator = solo_dev->fps;
1025 
1026 	fintv->stepwise.max.numerator = 15;
1027 	fintv->stepwise.max.denominator = solo_dev->fps;
1028 
1029 	fintv->stepwise.step.numerator = 1;
1030 	fintv->stepwise.step.denominator = solo_dev->fps;
1031 
1032 	return 0;
1033 }
1034 
1035 static int solo_g_parm(struct file *file, void *priv,
1036 		       struct v4l2_streamparm *sp)
1037 {
1038 	struct solo_enc_dev *solo_enc = video_drvdata(file);
1039 	struct v4l2_captureparm *cp = &sp->parm.capture;
1040 
1041 	cp->capability = V4L2_CAP_TIMEPERFRAME;
1042 	cp->timeperframe.numerator = solo_enc->interval;
1043 	cp->timeperframe.denominator = solo_enc->solo_dev->fps;
1044 	cp->capturemode = 0;
1045 	/* XXX: Shouldn't we be able to get/set this from videobuf? */
1046 	cp->readbuffers = 2;
1047 
1048 	return 0;
1049 }
1050 
1051 static inline int calc_interval(u8 fps, u32 n, u32 d)
1052 {
1053 	if (!n || !d)
1054 		return 1;
1055 	if (d == fps)
1056 		return n;
1057 	n *= fps;
1058 	return min(15U, n / d + (n % d >= (fps >> 1)));
1059 }
1060 
1061 static int solo_s_parm(struct file *file, void *priv,
1062 		       struct v4l2_streamparm *sp)
1063 {
1064 	struct solo_enc_dev *solo_enc = video_drvdata(file);
1065 	struct v4l2_fract *t = &sp->parm.capture.timeperframe;
1066 	u8 fps = solo_enc->solo_dev->fps;
1067 
1068 	if (vb2_is_streaming(&solo_enc->vidq))
1069 		return -EBUSY;
1070 
1071 	solo_enc->interval = calc_interval(fps, t->numerator, t->denominator);
1072 	solo_update_mode(solo_enc);
1073 	return solo_g_parm(file, priv, sp);
1074 }
1075 
1076 static int solo_s_ctrl(struct v4l2_ctrl *ctrl)
1077 {
1078 	struct solo_enc_dev *solo_enc =
1079 		container_of(ctrl->handler, struct solo_enc_dev, hdl);
1080 	struct solo_dev *solo_dev = solo_enc->solo_dev;
1081 	int err;
1082 
1083 	switch (ctrl->id) {
1084 	case V4L2_CID_BRIGHTNESS:
1085 	case V4L2_CID_CONTRAST:
1086 	case V4L2_CID_SATURATION:
1087 	case V4L2_CID_HUE:
1088 	case V4L2_CID_SHARPNESS:
1089 		return tw28_set_ctrl_val(solo_dev, ctrl->id, solo_enc->ch,
1090 					 ctrl->val);
1091 	case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
1092 		solo_enc->gop = ctrl->val;
1093 		solo_reg_write(solo_dev, SOLO_VE_CH_GOP(solo_enc->ch), solo_enc->gop);
1094 		solo_reg_write(solo_dev, SOLO_VE_CH_GOP_E(solo_enc->ch), solo_enc->gop);
1095 		return 0;
1096 	case V4L2_CID_MPEG_VIDEO_H264_MIN_QP:
1097 		solo_enc->qp = ctrl->val;
1098 		solo_reg_write(solo_dev, SOLO_VE_CH_QP(solo_enc->ch), solo_enc->qp);
1099 		solo_reg_write(solo_dev, SOLO_VE_CH_QP_E(solo_enc->ch), solo_enc->qp);
1100 		return 0;
1101 	case V4L2_CID_DETECT_MD_GLOBAL_THRESHOLD:
1102 		solo_enc->motion_thresh = ctrl->val << 8;
1103 		if (!solo_enc->motion_global || !solo_enc->motion_enabled)
1104 			return 0;
1105 		return solo_set_motion_threshold(solo_dev, solo_enc->ch,
1106 				solo_enc->motion_thresh);
1107 	case V4L2_CID_DETECT_MD_MODE:
1108 		solo_enc->motion_global = ctrl->val == V4L2_DETECT_MD_MODE_GLOBAL;
1109 		solo_enc->motion_enabled = ctrl->val > V4L2_DETECT_MD_MODE_DISABLED;
1110 		if (ctrl->val) {
1111 			if (solo_enc->motion_global)
1112 				err = solo_set_motion_threshold(solo_dev, solo_enc->ch,
1113 					solo_enc->motion_thresh);
1114 			else
1115 				err = solo_set_motion_block(solo_dev, solo_enc->ch,
1116 					solo_enc->md_thresholds->p_cur.p_u16);
1117 			if (err)
1118 				return err;
1119 		}
1120 		solo_motion_toggle(solo_enc, ctrl->val);
1121 		return 0;
1122 	case V4L2_CID_DETECT_MD_THRESHOLD_GRID:
1123 		if (solo_enc->motion_enabled && !solo_enc->motion_global)
1124 			return solo_set_motion_block(solo_dev, solo_enc->ch,
1125 					solo_enc->md_thresholds->p_new.p_u16);
1126 		break;
1127 	case V4L2_CID_OSD_TEXT:
1128 		strcpy(solo_enc->osd_text, ctrl->p_new.p_char);
1129 		return solo_osd_print(solo_enc);
1130 	default:
1131 		return -EINVAL;
1132 	}
1133 
1134 	return 0;
1135 }
1136 
1137 static int solo_subscribe_event(struct v4l2_fh *fh,
1138 				const struct v4l2_event_subscription *sub)
1139 {
1140 
1141 	switch (sub->type) {
1142 	case V4L2_EVENT_CTRL:
1143 		return v4l2_ctrl_subscribe_event(fh, sub);
1144 	case V4L2_EVENT_MOTION_DET:
1145 		/* Allow for up to 30 events (1 second for NTSC) to be
1146 		 * stored. */
1147 		return v4l2_event_subscribe(fh, sub, 30, NULL);
1148 	}
1149 	return -EINVAL;
1150 }
1151 
1152 static const struct v4l2_file_operations solo_enc_fops = {
1153 	.owner			= THIS_MODULE,
1154 	.open			= v4l2_fh_open,
1155 	.release		= vb2_fop_release,
1156 	.read			= vb2_fop_read,
1157 	.poll			= vb2_fop_poll,
1158 	.mmap			= vb2_fop_mmap,
1159 	.unlocked_ioctl		= video_ioctl2,
1160 };
1161 
1162 static const struct v4l2_ioctl_ops solo_enc_ioctl_ops = {
1163 	.vidioc_querycap		= solo_enc_querycap,
1164 	.vidioc_s_std			= solo_enc_s_std,
1165 	.vidioc_g_std			= solo_enc_g_std,
1166 	/* Input callbacks */
1167 	.vidioc_enum_input		= solo_enc_enum_input,
1168 	.vidioc_s_input			= solo_enc_set_input,
1169 	.vidioc_g_input			= solo_enc_get_input,
1170 	/* Video capture format callbacks */
1171 	.vidioc_enum_fmt_vid_cap	= solo_enc_enum_fmt_cap,
1172 	.vidioc_try_fmt_vid_cap		= solo_enc_try_fmt_cap,
1173 	.vidioc_s_fmt_vid_cap		= solo_enc_set_fmt_cap,
1174 	.vidioc_g_fmt_vid_cap		= solo_enc_get_fmt_cap,
1175 	/* Streaming I/O */
1176 	.vidioc_reqbufs			= vb2_ioctl_reqbufs,
1177 	.vidioc_querybuf		= vb2_ioctl_querybuf,
1178 	.vidioc_qbuf			= vb2_ioctl_qbuf,
1179 	.vidioc_dqbuf			= vb2_ioctl_dqbuf,
1180 	.vidioc_streamon		= vb2_ioctl_streamon,
1181 	.vidioc_streamoff		= vb2_ioctl_streamoff,
1182 	/* Frame size and interval */
1183 	.vidioc_enum_framesizes		= solo_enum_framesizes,
1184 	.vidioc_enum_frameintervals	= solo_enum_frameintervals,
1185 	/* Video capture parameters */
1186 	.vidioc_s_parm			= solo_s_parm,
1187 	.vidioc_g_parm			= solo_g_parm,
1188 	/* Logging and events */
1189 	.vidioc_log_status		= v4l2_ctrl_log_status,
1190 	.vidioc_subscribe_event		= solo_subscribe_event,
1191 	.vidioc_unsubscribe_event	= v4l2_event_unsubscribe,
1192 };
1193 
1194 static const struct video_device solo_enc_template = {
1195 	.name			= SOLO6X10_NAME,
1196 	.fops			= &solo_enc_fops,
1197 	.ioctl_ops		= &solo_enc_ioctl_ops,
1198 	.minor			= -1,
1199 	.release		= video_device_release,
1200 	.tvnorms		= V4L2_STD_NTSC_M | V4L2_STD_PAL,
1201 };
1202 
1203 static const struct v4l2_ctrl_ops solo_ctrl_ops = {
1204 	.s_ctrl = solo_s_ctrl,
1205 };
1206 
1207 static const struct v4l2_ctrl_config solo_osd_text_ctrl = {
1208 	.ops = &solo_ctrl_ops,
1209 	.id = V4L2_CID_OSD_TEXT,
1210 	.name = "OSD Text",
1211 	.type = V4L2_CTRL_TYPE_STRING,
1212 	.max = OSD_TEXT_MAX,
1213 	.step = 1,
1214 };
1215 
1216 /* Motion Detection Threshold matrix */
1217 static const struct v4l2_ctrl_config solo_md_thresholds = {
1218 	.ops = &solo_ctrl_ops,
1219 	.id = V4L2_CID_DETECT_MD_THRESHOLD_GRID,
1220 	.dims = { SOLO_MOTION_SZ, SOLO_MOTION_SZ },
1221 	.def = SOLO_DEF_MOT_THRESH,
1222 	.max = 65535,
1223 	.step = 1,
1224 };
1225 
1226 static struct solo_enc_dev *solo_enc_alloc(struct solo_dev *solo_dev,
1227 					   u8 ch, unsigned nr)
1228 {
1229 	struct solo_enc_dev *solo_enc;
1230 	struct v4l2_ctrl_handler *hdl;
1231 	int ret;
1232 
1233 	solo_enc = kzalloc(sizeof(*solo_enc), GFP_KERNEL);
1234 	if (!solo_enc)
1235 		return ERR_PTR(-ENOMEM);
1236 
1237 	hdl = &solo_enc->hdl;
1238 	solo_enc->alloc_ctx = vb2_dma_sg_init_ctx(&solo_dev->pdev->dev);
1239 	if (IS_ERR(solo_enc->alloc_ctx)) {
1240 		ret = PTR_ERR(solo_enc->alloc_ctx);
1241 		goto hdl_free;
1242 	}
1243 	v4l2_ctrl_handler_init(hdl, 10);
1244 	v4l2_ctrl_new_std(hdl, &solo_ctrl_ops,
1245 			V4L2_CID_BRIGHTNESS, 0, 255, 1, 128);
1246 	v4l2_ctrl_new_std(hdl, &solo_ctrl_ops,
1247 			V4L2_CID_CONTRAST, 0, 255, 1, 128);
1248 	v4l2_ctrl_new_std(hdl, &solo_ctrl_ops,
1249 			V4L2_CID_SATURATION, 0, 255, 1, 128);
1250 	v4l2_ctrl_new_std(hdl, &solo_ctrl_ops,
1251 			V4L2_CID_HUE, 0, 255, 1, 128);
1252 	if (tw28_has_sharpness(solo_dev, ch))
1253 		v4l2_ctrl_new_std(hdl, &solo_ctrl_ops,
1254 			V4L2_CID_SHARPNESS, 0, 15, 1, 0);
1255 	v4l2_ctrl_new_std(hdl, &solo_ctrl_ops,
1256 			V4L2_CID_MPEG_VIDEO_GOP_SIZE, 1, 255, 1, solo_dev->fps);
1257 	v4l2_ctrl_new_std(hdl, &solo_ctrl_ops,
1258 			V4L2_CID_MPEG_VIDEO_H264_MIN_QP, 0, 31, 1, SOLO_DEFAULT_QP);
1259 	v4l2_ctrl_new_std_menu(hdl, &solo_ctrl_ops,
1260 			V4L2_CID_DETECT_MD_MODE,
1261 			V4L2_DETECT_MD_MODE_THRESHOLD_GRID, 0,
1262 			V4L2_DETECT_MD_MODE_DISABLED);
1263 	v4l2_ctrl_new_std(hdl, &solo_ctrl_ops,
1264 			V4L2_CID_DETECT_MD_GLOBAL_THRESHOLD, 0, 0xff, 1,
1265 			SOLO_DEF_MOT_THRESH >> 8);
1266 	v4l2_ctrl_new_custom(hdl, &solo_osd_text_ctrl, NULL);
1267 	solo_enc->md_thresholds =
1268 		v4l2_ctrl_new_custom(hdl, &solo_md_thresholds, NULL);
1269 	if (hdl->error) {
1270 		ret = hdl->error;
1271 		goto hdl_free;
1272 	}
1273 
1274 	solo_enc->solo_dev = solo_dev;
1275 	solo_enc->ch = ch;
1276 	mutex_init(&solo_enc->lock);
1277 	spin_lock_init(&solo_enc->av_lock);
1278 	INIT_LIST_HEAD(&solo_enc->vidq_active);
1279 	solo_enc->fmt = (solo_dev->type == SOLO_DEV_6010) ?
1280 		V4L2_PIX_FMT_MPEG4 : V4L2_PIX_FMT_H264;
1281 	solo_enc->type = SOLO_ENC_TYPE_STD;
1282 
1283 	solo_enc->qp = SOLO_DEFAULT_QP;
1284 	solo_enc->gop = solo_dev->fps;
1285 	solo_enc->interval = 1;
1286 	solo_enc->mode = SOLO_ENC_MODE_CIF;
1287 	solo_enc->motion_global = true;
1288 	solo_enc->motion_thresh = SOLO_DEF_MOT_THRESH;
1289 	solo_enc->vidq.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1290 	solo_enc->vidq.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ;
1291 	solo_enc->vidq.ops = &solo_enc_video_qops;
1292 	solo_enc->vidq.mem_ops = &vb2_dma_sg_memops;
1293 	solo_enc->vidq.drv_priv = solo_enc;
1294 	solo_enc->vidq.gfp_flags = __GFP_DMA32;
1295 	solo_enc->vidq.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1296 	solo_enc->vidq.buf_struct_size = sizeof(struct solo_vb2_buf);
1297 	solo_enc->vidq.lock = &solo_enc->lock;
1298 	ret = vb2_queue_init(&solo_enc->vidq);
1299 	if (ret)
1300 		goto hdl_free;
1301 	solo_update_mode(solo_enc);
1302 
1303 	spin_lock_init(&solo_enc->motion_lock);
1304 
1305 	/* Initialize this per encoder */
1306 	solo_enc->jpeg_len = sizeof(jpeg_header);
1307 	memcpy(solo_enc->jpeg_header, jpeg_header, solo_enc->jpeg_len);
1308 
1309 	solo_enc->desc_nelts = 32;
1310 	solo_enc->desc_items = pci_alloc_consistent(solo_dev->pdev,
1311 				      sizeof(struct solo_p2m_desc) *
1312 				      solo_enc->desc_nelts,
1313 				      &solo_enc->desc_dma);
1314 	ret = -ENOMEM;
1315 	if (solo_enc->desc_items == NULL)
1316 		goto hdl_free;
1317 
1318 	solo_enc->vfd = video_device_alloc();
1319 	if (!solo_enc->vfd)
1320 		goto pci_free;
1321 
1322 	*solo_enc->vfd = solo_enc_template;
1323 	solo_enc->vfd->v4l2_dev = &solo_dev->v4l2_dev;
1324 	solo_enc->vfd->ctrl_handler = hdl;
1325 	solo_enc->vfd->queue = &solo_enc->vidq;
1326 	solo_enc->vfd->lock = &solo_enc->lock;
1327 	video_set_drvdata(solo_enc->vfd, solo_enc);
1328 	ret = video_register_device(solo_enc->vfd, VFL_TYPE_GRABBER, nr);
1329 	if (ret < 0)
1330 		goto vdev_release;
1331 
1332 	snprintf(solo_enc->vfd->name, sizeof(solo_enc->vfd->name),
1333 		 "%s-enc (%i/%i)", SOLO6X10_NAME, solo_dev->vfd->num,
1334 		 solo_enc->vfd->num);
1335 
1336 	return solo_enc;
1337 
1338 vdev_release:
1339 	video_device_release(solo_enc->vfd);
1340 pci_free:
1341 	pci_free_consistent(solo_enc->solo_dev->pdev,
1342 			sizeof(struct solo_p2m_desc) * solo_enc->desc_nelts,
1343 			solo_enc->desc_items, solo_enc->desc_dma);
1344 hdl_free:
1345 	v4l2_ctrl_handler_free(hdl);
1346 	vb2_dma_sg_cleanup_ctx(solo_enc->alloc_ctx);
1347 	kfree(solo_enc);
1348 	return ERR_PTR(ret);
1349 }
1350 
1351 static void solo_enc_free(struct solo_enc_dev *solo_enc)
1352 {
1353 	if (solo_enc == NULL)
1354 		return;
1355 
1356 	pci_free_consistent(solo_enc->solo_dev->pdev,
1357 			sizeof(struct solo_p2m_desc) * solo_enc->desc_nelts,
1358 			solo_enc->desc_items, solo_enc->desc_dma);
1359 	video_unregister_device(solo_enc->vfd);
1360 	v4l2_ctrl_handler_free(&solo_enc->hdl);
1361 	vb2_dma_sg_cleanup_ctx(solo_enc->alloc_ctx);
1362 	kfree(solo_enc);
1363 }
1364 
1365 int solo_enc_v4l2_init(struct solo_dev *solo_dev, unsigned nr)
1366 {
1367 	int i;
1368 
1369 	init_waitqueue_head(&solo_dev->ring_thread_wait);
1370 
1371 	solo_dev->vh_size = sizeof(vop_header);
1372 	solo_dev->vh_buf = pci_alloc_consistent(solo_dev->pdev,
1373 						solo_dev->vh_size,
1374 						&solo_dev->vh_dma);
1375 	if (solo_dev->vh_buf == NULL)
1376 		return -ENOMEM;
1377 
1378 	for (i = 0; i < solo_dev->nr_chans; i++) {
1379 		solo_dev->v4l2_enc[i] = solo_enc_alloc(solo_dev, i, nr);
1380 		if (IS_ERR(solo_dev->v4l2_enc[i]))
1381 			break;
1382 	}
1383 
1384 	if (i != solo_dev->nr_chans) {
1385 		int ret = PTR_ERR(solo_dev->v4l2_enc[i]);
1386 
1387 		while (i--)
1388 			solo_enc_free(solo_dev->v4l2_enc[i]);
1389 		pci_free_consistent(solo_dev->pdev, solo_dev->vh_size,
1390 				    solo_dev->vh_buf, solo_dev->vh_dma);
1391 		solo_dev->vh_buf = NULL;
1392 		return ret;
1393 	}
1394 
1395 	if (solo_dev->type == SOLO_DEV_6010)
1396 		solo_dev->enc_bw_remain = solo_dev->fps * 4 * 4;
1397 	else
1398 		solo_dev->enc_bw_remain = solo_dev->fps * 4 * 5;
1399 
1400 	dev_info(&solo_dev->pdev->dev, "Encoders as /dev/video%d-%d\n",
1401 		 solo_dev->v4l2_enc[0]->vfd->num,
1402 		 solo_dev->v4l2_enc[solo_dev->nr_chans - 1]->vfd->num);
1403 
1404 	return solo_ring_start(solo_dev);
1405 }
1406 
1407 void solo_enc_v4l2_exit(struct solo_dev *solo_dev)
1408 {
1409 	int i;
1410 
1411 	solo_ring_stop(solo_dev);
1412 
1413 	for (i = 0; i < solo_dev->nr_chans; i++)
1414 		solo_enc_free(solo_dev->v4l2_enc[i]);
1415 
1416 	if (solo_dev->vh_buf)
1417 		pci_free_consistent(solo_dev->pdev, solo_dev->vh_size,
1418 			    solo_dev->vh_buf, solo_dev->vh_dma);
1419 }
1420