1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * Copyright (C) 2010-2013 Bluecherry, LLC <https://www.bluecherrydvr.com>
4  *
5  * Original author:
6  * Ben Collins <bcollins@ubuntu.com>
7  *
8  * Additional work by:
9  * John Brooks <john.brooks@bluecherry.net>
10  */
11 
12 #include <linux/kernel.h>
13 #include <linux/module.h>
14 #include <linux/kthread.h>
15 #include <linux/freezer.h>
16 
17 #include <media/v4l2-ioctl.h>
18 #include <media/v4l2-common.h>
19 #include <media/v4l2-event.h>
20 #include <media/videobuf2-dma-sg.h>
21 
22 #include "solo6x10.h"
23 #include "solo6x10-tw28.h"
24 #include "solo6x10-jpeg.h"
25 
26 #define MIN_VID_BUFFERS		2
27 #define FRAME_BUF_SIZE		(400 * 1024)
28 #define MP4_QS			16
29 #define DMA_ALIGN		4096
30 
31 /* 6010 M4V */
32 static u8 vop_6010_ntsc_d1[] = {
33 	0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x20,
34 	0x02, 0x48, 0x1d, 0xc0, 0x00, 0x40, 0x00, 0x40,
35 	0x00, 0x40, 0x00, 0x80, 0x00, 0x97, 0x53, 0x04,
36 	0x1f, 0x4c, 0x58, 0x10, 0xf0, 0x71, 0x18, 0x3f,
37 };
38 
39 static u8 vop_6010_ntsc_cif[] = {
40 	0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x20,
41 	0x02, 0x48, 0x1d, 0xc0, 0x00, 0x40, 0x00, 0x40,
42 	0x00, 0x40, 0x00, 0x80, 0x00, 0x97, 0x53, 0x04,
43 	0x1f, 0x4c, 0x2c, 0x10, 0x78, 0x51, 0x18, 0x3f,
44 };
45 
46 static u8 vop_6010_pal_d1[] = {
47 	0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x20,
48 	0x02, 0x48, 0x15, 0xc0, 0x00, 0x40, 0x00, 0x40,
49 	0x00, 0x40, 0x00, 0x80, 0x00, 0x97, 0x53, 0x04,
50 	0x1f, 0x4c, 0x58, 0x11, 0x20, 0x71, 0x18, 0x3f,
51 };
52 
53 static u8 vop_6010_pal_cif[] = {
54 	0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x20,
55 	0x02, 0x48, 0x15, 0xc0, 0x00, 0x40, 0x00, 0x40,
56 	0x00, 0x40, 0x00, 0x80, 0x00, 0x97, 0x53, 0x04,
57 	0x1f, 0x4c, 0x2c, 0x10, 0x90, 0x51, 0x18, 0x3f,
58 };
59 
60 /* 6110 h.264 */
61 static u8 vop_6110_ntsc_d1[] = {
62 	0x00, 0x00, 0x00, 0x01, 0x67, 0x42, 0x00, 0x1e,
63 	0x9a, 0x74, 0x05, 0x81, 0xec, 0x80, 0x00, 0x00,
64 	0x00, 0x01, 0x68, 0xce, 0x32, 0x28, 0x00, 0x00,
65 };
66 
67 static u8 vop_6110_ntsc_cif[] = {
68 	0x00, 0x00, 0x00, 0x01, 0x67, 0x42, 0x00, 0x1e,
69 	0x9a, 0x74, 0x0b, 0x0f, 0xc8, 0x00, 0x00, 0x00,
70 	0x01, 0x68, 0xce, 0x32, 0x28, 0x00, 0x00, 0x00,
71 };
72 
73 static u8 vop_6110_pal_d1[] = {
74 	0x00, 0x00, 0x00, 0x01, 0x67, 0x42, 0x00, 0x1e,
75 	0x9a, 0x74, 0x05, 0x80, 0x93, 0x20, 0x00, 0x00,
76 	0x00, 0x01, 0x68, 0xce, 0x32, 0x28, 0x00, 0x00,
77 };
78 
79 static u8 vop_6110_pal_cif[] = {
80 	0x00, 0x00, 0x00, 0x01, 0x67, 0x42, 0x00, 0x1e,
81 	0x9a, 0x74, 0x0b, 0x04, 0xb2, 0x00, 0x00, 0x00,
82 	0x01, 0x68, 0xce, 0x32, 0x28, 0x00, 0x00, 0x00,
83 };
84 
85 typedef __le32 vop_header[16];
86 
87 struct solo_enc_buf {
88 	enum solo_enc_types	type;
89 	const vop_header	*vh;
90 	int			motion;
91 };
92 
93 static int solo_is_motion_on(struct solo_enc_dev *solo_enc)
94 {
95 	struct solo_dev *solo_dev = solo_enc->solo_dev;
96 
97 	return (solo_dev->motion_mask >> solo_enc->ch) & 1;
98 }
99 
100 static int solo_motion_detected(struct solo_enc_dev *solo_enc)
101 {
102 	struct solo_dev *solo_dev = solo_enc->solo_dev;
103 	unsigned long flags;
104 	u32 ch_mask = 1 << solo_enc->ch;
105 	int ret = 0;
106 
107 	spin_lock_irqsave(&solo_enc->motion_lock, flags);
108 	if (solo_reg_read(solo_dev, SOLO_VI_MOT_STATUS) & ch_mask) {
109 		solo_reg_write(solo_dev, SOLO_VI_MOT_CLEAR, ch_mask);
110 		ret = 1;
111 	}
112 	spin_unlock_irqrestore(&solo_enc->motion_lock, flags);
113 
114 	return ret;
115 }
116 
117 static void solo_motion_toggle(struct solo_enc_dev *solo_enc, int on)
118 {
119 	struct solo_dev *solo_dev = solo_enc->solo_dev;
120 	u32 mask = 1 << solo_enc->ch;
121 	unsigned long flags;
122 
123 	spin_lock_irqsave(&solo_enc->motion_lock, flags);
124 
125 	if (on)
126 		solo_dev->motion_mask |= mask;
127 	else
128 		solo_dev->motion_mask &= ~mask;
129 
130 	solo_reg_write(solo_dev, SOLO_VI_MOT_CLEAR, mask);
131 
132 	solo_reg_write(solo_dev, SOLO_VI_MOT_ADR,
133 		       SOLO_VI_MOTION_EN(solo_dev->motion_mask) |
134 		       (SOLO_MOTION_EXT_ADDR(solo_dev) >> 16));
135 
136 	spin_unlock_irqrestore(&solo_enc->motion_lock, flags);
137 }
138 
139 void solo_update_mode(struct solo_enc_dev *solo_enc)
140 {
141 	struct solo_dev *solo_dev = solo_enc->solo_dev;
142 	int vop_len;
143 	u8 *vop;
144 
145 	solo_enc->interlaced = (solo_enc->mode & 0x08) ? 1 : 0;
146 	solo_enc->bw_weight = max(solo_dev->fps / solo_enc->interval, 1);
147 
148 	if (solo_enc->mode == SOLO_ENC_MODE_CIF) {
149 		solo_enc->width = solo_dev->video_hsize >> 1;
150 		solo_enc->height = solo_dev->video_vsize;
151 		if (solo_dev->type == SOLO_DEV_6110) {
152 			if (solo_dev->video_type == SOLO_VO_FMT_TYPE_NTSC) {
153 				vop = vop_6110_ntsc_cif;
154 				vop_len = sizeof(vop_6110_ntsc_cif);
155 			} else {
156 				vop = vop_6110_pal_cif;
157 				vop_len = sizeof(vop_6110_pal_cif);
158 			}
159 		} else {
160 			if (solo_dev->video_type == SOLO_VO_FMT_TYPE_NTSC) {
161 				vop = vop_6010_ntsc_cif;
162 				vop_len = sizeof(vop_6010_ntsc_cif);
163 			} else {
164 				vop = vop_6010_pal_cif;
165 				vop_len = sizeof(vop_6010_pal_cif);
166 			}
167 		}
168 	} else {
169 		solo_enc->width = solo_dev->video_hsize;
170 		solo_enc->height = solo_dev->video_vsize << 1;
171 		solo_enc->bw_weight <<= 2;
172 		if (solo_dev->type == SOLO_DEV_6110) {
173 			if (solo_dev->video_type == SOLO_VO_FMT_TYPE_NTSC) {
174 				vop = vop_6110_ntsc_d1;
175 				vop_len = sizeof(vop_6110_ntsc_d1);
176 			} else {
177 				vop = vop_6110_pal_d1;
178 				vop_len = sizeof(vop_6110_pal_d1);
179 			}
180 		} else {
181 			if (solo_dev->video_type == SOLO_VO_FMT_TYPE_NTSC) {
182 				vop = vop_6010_ntsc_d1;
183 				vop_len = sizeof(vop_6010_ntsc_d1);
184 			} else {
185 				vop = vop_6010_pal_d1;
186 				vop_len = sizeof(vop_6010_pal_d1);
187 			}
188 		}
189 	}
190 
191 	memcpy(solo_enc->vop, vop, vop_len);
192 
193 	/* Some fixups for 6010/M4V */
194 	if (solo_dev->type == SOLO_DEV_6010) {
195 		u16 fps = solo_dev->fps * 1000;
196 		u16 interval = solo_enc->interval * 1000;
197 
198 		vop = solo_enc->vop;
199 
200 		/* Frame rate and interval */
201 		vop[22] = fps >> 4;
202 		vop[23] = ((fps << 4) & 0xf0) | 0x0c
203 			| ((interval >> 13) & 0x3);
204 		vop[24] = (interval >> 5) & 0xff;
205 		vop[25] = ((interval << 3) & 0xf8) | 0x04;
206 	}
207 
208 	solo_enc->vop_len = vop_len;
209 
210 	/* Now handle the jpeg header */
211 	vop = solo_enc->jpeg_header;
212 	vop[SOF0_START + 5] = 0xff & (solo_enc->height >> 8);
213 	vop[SOF0_START + 6] = 0xff & solo_enc->height;
214 	vop[SOF0_START + 7] = 0xff & (solo_enc->width >> 8);
215 	vop[SOF0_START + 8] = 0xff & solo_enc->width;
216 
217 	memcpy(vop + DQT_START,
218 	       jpeg_dqt[solo_g_jpeg_qp(solo_dev, solo_enc->ch)], DQT_LEN);
219 }
220 
221 static int solo_enc_on(struct solo_enc_dev *solo_enc)
222 {
223 	u8 ch = solo_enc->ch;
224 	struct solo_dev *solo_dev = solo_enc->solo_dev;
225 	u8 interval;
226 
227 	solo_update_mode(solo_enc);
228 
229 	/* Make sure to do a bandwidth check */
230 	if (solo_enc->bw_weight > solo_dev->enc_bw_remain)
231 		return -EBUSY;
232 	solo_enc->sequence = 0;
233 	solo_dev->enc_bw_remain -= solo_enc->bw_weight;
234 
235 	if (solo_enc->type == SOLO_ENC_TYPE_EXT)
236 		solo_reg_write(solo_dev, SOLO_CAP_CH_COMP_ENA_E(ch), 1);
237 
238 	/* Disable all encoding for this channel */
239 	solo_reg_write(solo_dev, SOLO_CAP_CH_SCALE(ch), 0);
240 
241 	/* Common for both std and ext encoding */
242 	solo_reg_write(solo_dev, SOLO_VE_CH_INTL(ch),
243 		       solo_enc->interlaced ? 1 : 0);
244 
245 	if (solo_enc->interlaced)
246 		interval = solo_enc->interval - 1;
247 	else
248 		interval = solo_enc->interval;
249 
250 	/* Standard encoding only */
251 	solo_reg_write(solo_dev, SOLO_VE_CH_GOP(ch), solo_enc->gop);
252 	solo_reg_write(solo_dev, SOLO_VE_CH_QP(ch), solo_enc->qp);
253 	solo_reg_write(solo_dev, SOLO_CAP_CH_INTV(ch), interval);
254 
255 	/* Extended encoding only */
256 	solo_reg_write(solo_dev, SOLO_VE_CH_GOP_E(ch), solo_enc->gop);
257 	solo_reg_write(solo_dev, SOLO_VE_CH_QP_E(ch), solo_enc->qp);
258 	solo_reg_write(solo_dev, SOLO_CAP_CH_INTV_E(ch), interval);
259 
260 	/* Enables the standard encoder */
261 	solo_reg_write(solo_dev, SOLO_CAP_CH_SCALE(ch), solo_enc->mode);
262 
263 	return 0;
264 }
265 
266 static void solo_enc_off(struct solo_enc_dev *solo_enc)
267 {
268 	struct solo_dev *solo_dev = solo_enc->solo_dev;
269 
270 	solo_dev->enc_bw_remain += solo_enc->bw_weight;
271 
272 	solo_reg_write(solo_dev, SOLO_CAP_CH_SCALE(solo_enc->ch), 0);
273 	solo_reg_write(solo_dev, SOLO_CAP_CH_COMP_ENA_E(solo_enc->ch), 0);
274 }
275 
276 static int enc_get_mpeg_dma(struct solo_dev *solo_dev, dma_addr_t dma,
277 			      unsigned int off, unsigned int size)
278 {
279 	int ret;
280 
281 	if (off > SOLO_MP4E_EXT_SIZE(solo_dev))
282 		return -EINVAL;
283 
284 	/* Single shot */
285 	if (off + size <= SOLO_MP4E_EXT_SIZE(solo_dev)) {
286 		return solo_p2m_dma_t(solo_dev, 0, dma,
287 				      SOLO_MP4E_EXT_ADDR(solo_dev) + off, size,
288 				      0, 0);
289 	}
290 
291 	/* Buffer wrap */
292 	ret = solo_p2m_dma_t(solo_dev, 0, dma,
293 			     SOLO_MP4E_EXT_ADDR(solo_dev) + off,
294 			     SOLO_MP4E_EXT_SIZE(solo_dev) - off, 0, 0);
295 
296 	if (!ret) {
297 		ret = solo_p2m_dma_t(solo_dev, 0,
298 			     dma + SOLO_MP4E_EXT_SIZE(solo_dev) - off,
299 			     SOLO_MP4E_EXT_ADDR(solo_dev),
300 			     size + off - SOLO_MP4E_EXT_SIZE(solo_dev), 0, 0);
301 	}
302 
303 	return ret;
304 }
305 
306 /* Build a descriptor queue out of an SG list and send it to the P2M for
307  * processing. */
308 static int solo_send_desc(struct solo_enc_dev *solo_enc, int skip,
309 			  struct sg_table *vbuf, int off, int size,
310 			  unsigned int base, unsigned int base_size)
311 {
312 	struct solo_dev *solo_dev = solo_enc->solo_dev;
313 	struct scatterlist *sg;
314 	int i;
315 	int ret;
316 
317 	if (WARN_ON_ONCE(size > FRAME_BUF_SIZE))
318 		return -EINVAL;
319 
320 	solo_enc->desc_count = 1;
321 
322 	for_each_sg(vbuf->sgl, sg, vbuf->nents, i) {
323 		struct solo_p2m_desc *desc;
324 		dma_addr_t dma;
325 		int len;
326 		int left = base_size - off;
327 
328 		desc = &solo_enc->desc_items[solo_enc->desc_count++];
329 		dma = sg_dma_address(sg);
330 		len = sg_dma_len(sg);
331 
332 		/* We assume this is smaller than the scatter size */
333 		BUG_ON(skip >= len);
334 		if (skip) {
335 			len -= skip;
336 			dma += skip;
337 			size -= skip;
338 			skip = 0;
339 		}
340 
341 		len = min(len, size);
342 
343 		if (len <= left) {
344 			/* Single descriptor */
345 			solo_p2m_fill_desc(desc, 0, dma, base + off,
346 					   len, 0, 0);
347 		} else {
348 			/* Buffer wrap */
349 			/* XXX: Do these as separate DMA requests, to avoid
350 			   timeout errors triggered by awkwardly sized
351 			   descriptors. See
352 			   <https://github.com/bluecherrydvr/solo6x10/issues/8>
353 			 */
354 			ret = solo_p2m_dma_t(solo_dev, 0, dma, base + off,
355 					     left, 0, 0);
356 			if (ret)
357 				return ret;
358 
359 			ret = solo_p2m_dma_t(solo_dev, 0, dma + left, base,
360 					     len - left, 0, 0);
361 			if (ret)
362 				return ret;
363 
364 			solo_enc->desc_count--;
365 		}
366 
367 		size -= len;
368 		if (size <= 0)
369 			break;
370 
371 		off += len;
372 		if (off >= base_size)
373 			off -= base_size;
374 
375 		/* Because we may use two descriptors per loop */
376 		if (solo_enc->desc_count >= (solo_enc->desc_nelts - 1)) {
377 			ret = solo_p2m_dma_desc(solo_dev, solo_enc->desc_items,
378 						solo_enc->desc_dma,
379 						solo_enc->desc_count - 1);
380 			if (ret)
381 				return ret;
382 			solo_enc->desc_count = 1;
383 		}
384 	}
385 
386 	if (solo_enc->desc_count <= 1)
387 		return 0;
388 
389 	return solo_p2m_dma_desc(solo_dev, solo_enc->desc_items,
390 			solo_enc->desc_dma, solo_enc->desc_count - 1);
391 }
392 
393 /* Extract values from VOP header - VE_STATUSxx */
394 static inline int vop_interlaced(const vop_header *vh)
395 {
396 	return (__le32_to_cpu((*vh)[0]) >> 30) & 1;
397 }
398 
399 static inline u8 vop_channel(const vop_header *vh)
400 {
401 	return (__le32_to_cpu((*vh)[0]) >> 24) & 0x1F;
402 }
403 
404 static inline u8 vop_type(const vop_header *vh)
405 {
406 	return (__le32_to_cpu((*vh)[0]) >> 22) & 3;
407 }
408 
409 static inline u32 vop_mpeg_size(const vop_header *vh)
410 {
411 	return __le32_to_cpu((*vh)[0]) & 0xFFFFF;
412 }
413 
414 static inline u8 vop_hsize(const vop_header *vh)
415 {
416 	return (__le32_to_cpu((*vh)[1]) >> 8) & 0xFF;
417 }
418 
419 static inline u8 vop_vsize(const vop_header *vh)
420 {
421 	return __le32_to_cpu((*vh)[1]) & 0xFF;
422 }
423 
424 static inline u32 vop_mpeg_offset(const vop_header *vh)
425 {
426 	return __le32_to_cpu((*vh)[2]);
427 }
428 
429 static inline u32 vop_jpeg_offset(const vop_header *vh)
430 {
431 	return __le32_to_cpu((*vh)[3]);
432 }
433 
434 static inline u32 vop_jpeg_size(const vop_header *vh)
435 {
436 	return __le32_to_cpu((*vh)[4]) & 0xFFFFF;
437 }
438 
439 static inline u32 vop_sec(const vop_header *vh)
440 {
441 	return __le32_to_cpu((*vh)[5]);
442 }
443 
444 static inline u32 vop_usec(const vop_header *vh)
445 {
446 	return __le32_to_cpu((*vh)[6]);
447 }
448 
449 static int solo_fill_jpeg(struct solo_enc_dev *solo_enc,
450 			  struct vb2_buffer *vb, const vop_header *vh)
451 {
452 	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
453 	struct solo_dev *solo_dev = solo_enc->solo_dev;
454 	struct sg_table *sgt = vb2_dma_sg_plane_desc(vb, 0);
455 	int frame_size;
456 
457 	vbuf->flags |= V4L2_BUF_FLAG_KEYFRAME;
458 
459 	if (vb2_plane_size(vb, 0) < vop_jpeg_size(vh) + solo_enc->jpeg_len)
460 		return -EIO;
461 
462 	frame_size = ALIGN(vop_jpeg_size(vh) + solo_enc->jpeg_len, DMA_ALIGN);
463 	vb2_set_plane_payload(vb, 0, vop_jpeg_size(vh) + solo_enc->jpeg_len);
464 
465 	return solo_send_desc(solo_enc, solo_enc->jpeg_len, sgt,
466 			     vop_jpeg_offset(vh) - SOLO_JPEG_EXT_ADDR(solo_dev),
467 			     frame_size, SOLO_JPEG_EXT_ADDR(solo_dev),
468 			     SOLO_JPEG_EXT_SIZE(solo_dev));
469 }
470 
471 static int solo_fill_mpeg(struct solo_enc_dev *solo_enc,
472 		struct vb2_buffer *vb, const vop_header *vh)
473 {
474 	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
475 	struct solo_dev *solo_dev = solo_enc->solo_dev;
476 	struct sg_table *sgt = vb2_dma_sg_plane_desc(vb, 0);
477 	int frame_off, frame_size;
478 	int skip = 0;
479 
480 	if (vb2_plane_size(vb, 0) < vop_mpeg_size(vh))
481 		return -EIO;
482 
483 	/* If this is a key frame, add extra header */
484 	vbuf->flags &= ~(V4L2_BUF_FLAG_KEYFRAME | V4L2_BUF_FLAG_PFRAME |
485 		V4L2_BUF_FLAG_BFRAME);
486 	if (!vop_type(vh)) {
487 		skip = solo_enc->vop_len;
488 		vbuf->flags |= V4L2_BUF_FLAG_KEYFRAME;
489 		vb2_set_plane_payload(vb, 0, vop_mpeg_size(vh) +
490 			solo_enc->vop_len);
491 	} else {
492 		vbuf->flags |= V4L2_BUF_FLAG_PFRAME;
493 		vb2_set_plane_payload(vb, 0, vop_mpeg_size(vh));
494 	}
495 
496 	/* Now get the actual mpeg payload */
497 	frame_off = (vop_mpeg_offset(vh) - SOLO_MP4E_EXT_ADDR(solo_dev) +
498 		sizeof(*vh)) % SOLO_MP4E_EXT_SIZE(solo_dev);
499 	frame_size = ALIGN(vop_mpeg_size(vh) + skip, DMA_ALIGN);
500 
501 	return solo_send_desc(solo_enc, skip, sgt, frame_off, frame_size,
502 			SOLO_MP4E_EXT_ADDR(solo_dev),
503 			SOLO_MP4E_EXT_SIZE(solo_dev));
504 }
505 
506 static int solo_enc_fillbuf(struct solo_enc_dev *solo_enc,
507 			    struct vb2_buffer *vb, struct solo_enc_buf *enc_buf)
508 {
509 	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
510 	const vop_header *vh = enc_buf->vh;
511 	int ret;
512 
513 	switch (solo_enc->fmt) {
514 	case V4L2_PIX_FMT_MPEG4:
515 	case V4L2_PIX_FMT_H264:
516 		ret = solo_fill_mpeg(solo_enc, vb, vh);
517 		break;
518 	default: /* V4L2_PIX_FMT_MJPEG */
519 		ret = solo_fill_jpeg(solo_enc, vb, vh);
520 		break;
521 	}
522 
523 	if (!ret) {
524 		vbuf->sequence = solo_enc->sequence++;
525 		vb->timestamp = ktime_get_ns();
526 
527 		/* Check for motion flags */
528 		if (solo_is_motion_on(solo_enc) && enc_buf->motion) {
529 			struct v4l2_event ev = {
530 				.type = V4L2_EVENT_MOTION_DET,
531 				.u.motion_det = {
532 					.flags
533 					= V4L2_EVENT_MD_FL_HAVE_FRAME_SEQ,
534 					.frame_sequence = vbuf->sequence,
535 					.region_mask = enc_buf->motion ? 1 : 0,
536 				},
537 			};
538 
539 			v4l2_event_queue(solo_enc->vfd, &ev);
540 		}
541 	}
542 
543 	vb2_buffer_done(vb, ret ? VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE);
544 
545 	return ret;
546 }
547 
548 static void solo_enc_handle_one(struct solo_enc_dev *solo_enc,
549 				struct solo_enc_buf *enc_buf)
550 {
551 	struct solo_vb2_buf *vb;
552 	unsigned long flags;
553 
554 	mutex_lock(&solo_enc->lock);
555 	if (solo_enc->type != enc_buf->type)
556 		goto unlock;
557 
558 	spin_lock_irqsave(&solo_enc->av_lock, flags);
559 	if (list_empty(&solo_enc->vidq_active)) {
560 		spin_unlock_irqrestore(&solo_enc->av_lock, flags);
561 		goto unlock;
562 	}
563 	vb = list_first_entry(&solo_enc->vidq_active, struct solo_vb2_buf,
564 		list);
565 	list_del(&vb->list);
566 	spin_unlock_irqrestore(&solo_enc->av_lock, flags);
567 
568 	solo_enc_fillbuf(solo_enc, &vb->vb.vb2_buf, enc_buf);
569 unlock:
570 	mutex_unlock(&solo_enc->lock);
571 }
572 
573 void solo_enc_v4l2_isr(struct solo_dev *solo_dev)
574 {
575 	wake_up_interruptible_all(&solo_dev->ring_thread_wait);
576 }
577 
578 static void solo_handle_ring(struct solo_dev *solo_dev)
579 {
580 	for (;;) {
581 		struct solo_enc_dev *solo_enc;
582 		struct solo_enc_buf enc_buf;
583 		u32 mpeg_current, off;
584 		u8 ch;
585 		u8 cur_q;
586 
587 		/* Check if the hardware has any new ones in the queue */
588 		cur_q = solo_reg_read(solo_dev, SOLO_VE_STATE(11)) & 0xff;
589 		if (cur_q == solo_dev->enc_idx)
590 			break;
591 
592 		mpeg_current = solo_reg_read(solo_dev,
593 					SOLO_VE_MPEG4_QUE(solo_dev->enc_idx));
594 		solo_dev->enc_idx = (solo_dev->enc_idx + 1) % MP4_QS;
595 
596 		ch = (mpeg_current >> 24) & 0x1f;
597 		off = mpeg_current & 0x00ffffff;
598 
599 		if (ch >= SOLO_MAX_CHANNELS) {
600 			ch -= SOLO_MAX_CHANNELS;
601 			enc_buf.type = SOLO_ENC_TYPE_EXT;
602 		} else
603 			enc_buf.type = SOLO_ENC_TYPE_STD;
604 
605 		solo_enc = solo_dev->v4l2_enc[ch];
606 		if (solo_enc == NULL) {
607 			dev_err(&solo_dev->pdev->dev,
608 				"Got spurious packet for channel %d\n", ch);
609 			continue;
610 		}
611 
612 		/* FAIL... */
613 		if (enc_get_mpeg_dma(solo_dev, solo_dev->vh_dma, off,
614 				     sizeof(vop_header)))
615 			continue;
616 
617 		enc_buf.vh = solo_dev->vh_buf;
618 
619 		/* Sanity check */
620 		if (vop_mpeg_offset(enc_buf.vh) !=
621 			SOLO_MP4E_EXT_ADDR(solo_dev) + off)
622 			continue;
623 
624 		if (solo_motion_detected(solo_enc))
625 			enc_buf.motion = 1;
626 		else
627 			enc_buf.motion = 0;
628 
629 		solo_enc_handle_one(solo_enc, &enc_buf);
630 	}
631 }
632 
633 static int solo_ring_thread(void *data)
634 {
635 	struct solo_dev *solo_dev = data;
636 	DECLARE_WAITQUEUE(wait, current);
637 
638 	set_freezable();
639 	add_wait_queue(&solo_dev->ring_thread_wait, &wait);
640 
641 	for (;;) {
642 		long timeout = schedule_timeout_interruptible(HZ);
643 
644 		if (timeout == -ERESTARTSYS || kthread_should_stop())
645 			break;
646 		solo_handle_ring(solo_dev);
647 		try_to_freeze();
648 	}
649 
650 	remove_wait_queue(&solo_dev->ring_thread_wait, &wait);
651 
652 	return 0;
653 }
654 
655 static int solo_enc_queue_setup(struct vb2_queue *q,
656 				unsigned int *num_buffers,
657 				unsigned int *num_planes, unsigned int sizes[],
658 				struct device *alloc_devs[])
659 {
660 	sizes[0] = FRAME_BUF_SIZE;
661 	*num_planes = 1;
662 
663 	if (*num_buffers < MIN_VID_BUFFERS)
664 		*num_buffers = MIN_VID_BUFFERS;
665 
666 	return 0;
667 }
668 
669 static void solo_enc_buf_queue(struct vb2_buffer *vb)
670 {
671 	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
672 	struct vb2_queue *vq = vb->vb2_queue;
673 	struct solo_enc_dev *solo_enc = vb2_get_drv_priv(vq);
674 	struct solo_vb2_buf *solo_vb =
675 		container_of(vbuf, struct solo_vb2_buf, vb);
676 
677 	spin_lock(&solo_enc->av_lock);
678 	list_add_tail(&solo_vb->list, &solo_enc->vidq_active);
679 	spin_unlock(&solo_enc->av_lock);
680 }
681 
682 static int solo_ring_start(struct solo_dev *solo_dev)
683 {
684 	solo_dev->ring_thread = kthread_run(solo_ring_thread, solo_dev,
685 					    SOLO6X10_NAME "_ring");
686 	if (IS_ERR(solo_dev->ring_thread)) {
687 		int err = PTR_ERR(solo_dev->ring_thread);
688 
689 		solo_dev->ring_thread = NULL;
690 		return err;
691 	}
692 
693 	solo_irq_on(solo_dev, SOLO_IRQ_ENCODER);
694 
695 	return 0;
696 }
697 
698 static void solo_ring_stop(struct solo_dev *solo_dev)
699 {
700 	if (solo_dev->ring_thread) {
701 		kthread_stop(solo_dev->ring_thread);
702 		solo_dev->ring_thread = NULL;
703 	}
704 
705 	solo_irq_off(solo_dev, SOLO_IRQ_ENCODER);
706 }
707 
708 static int solo_enc_start_streaming(struct vb2_queue *q, unsigned int count)
709 {
710 	struct solo_enc_dev *solo_enc = vb2_get_drv_priv(q);
711 
712 	return solo_enc_on(solo_enc);
713 }
714 
715 static void solo_enc_stop_streaming(struct vb2_queue *q)
716 {
717 	struct solo_enc_dev *solo_enc = vb2_get_drv_priv(q);
718 	unsigned long flags;
719 
720 	spin_lock_irqsave(&solo_enc->av_lock, flags);
721 	solo_enc_off(solo_enc);
722 	while (!list_empty(&solo_enc->vidq_active)) {
723 		struct solo_vb2_buf *buf = list_entry(
724 				solo_enc->vidq_active.next,
725 				struct solo_vb2_buf, list);
726 
727 		list_del(&buf->list);
728 		vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
729 	}
730 	spin_unlock_irqrestore(&solo_enc->av_lock, flags);
731 }
732 
733 static void solo_enc_buf_finish(struct vb2_buffer *vb)
734 {
735 	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
736 	struct solo_enc_dev *solo_enc = vb2_get_drv_priv(vb->vb2_queue);
737 	struct sg_table *sgt = vb2_dma_sg_plane_desc(vb, 0);
738 
739 	switch (solo_enc->fmt) {
740 	case V4L2_PIX_FMT_MPEG4:
741 	case V4L2_PIX_FMT_H264:
742 		if (vbuf->flags & V4L2_BUF_FLAG_KEYFRAME)
743 			sg_copy_from_buffer(sgt->sgl, sgt->nents,
744 					solo_enc->vop, solo_enc->vop_len);
745 		break;
746 	default: /* V4L2_PIX_FMT_MJPEG */
747 		sg_copy_from_buffer(sgt->sgl, sgt->nents,
748 				solo_enc->jpeg_header, solo_enc->jpeg_len);
749 		break;
750 	}
751 }
752 
753 static const struct vb2_ops solo_enc_video_qops = {
754 	.queue_setup	= solo_enc_queue_setup,
755 	.buf_queue	= solo_enc_buf_queue,
756 	.buf_finish	= solo_enc_buf_finish,
757 	.start_streaming = solo_enc_start_streaming,
758 	.stop_streaming = solo_enc_stop_streaming,
759 	.wait_prepare	= vb2_ops_wait_prepare,
760 	.wait_finish	= vb2_ops_wait_finish,
761 };
762 
763 static int solo_enc_querycap(struct file *file, void  *priv,
764 			     struct v4l2_capability *cap)
765 {
766 	struct solo_enc_dev *solo_enc = video_drvdata(file);
767 	struct solo_dev *solo_dev = solo_enc->solo_dev;
768 
769 	strscpy(cap->driver, SOLO6X10_NAME, sizeof(cap->driver));
770 	snprintf(cap->card, sizeof(cap->card), "Softlogic 6x10 Enc %d",
771 		 solo_enc->ch);
772 	snprintf(cap->bus_info, sizeof(cap->bus_info), "PCI:%s",
773 		 pci_name(solo_dev->pdev));
774 	return 0;
775 }
776 
777 static int solo_enc_enum_input(struct file *file, void *priv,
778 			       struct v4l2_input *input)
779 {
780 	struct solo_enc_dev *solo_enc = video_drvdata(file);
781 	struct solo_dev *solo_dev = solo_enc->solo_dev;
782 
783 	if (input->index)
784 		return -EINVAL;
785 
786 	snprintf(input->name, sizeof(input->name), "Encoder %d",
787 		 solo_enc->ch + 1);
788 	input->type = V4L2_INPUT_TYPE_CAMERA;
789 	input->std = solo_enc->vfd->tvnorms;
790 
791 	if (!tw28_get_video_status(solo_dev, solo_enc->ch))
792 		input->status = V4L2_IN_ST_NO_SIGNAL;
793 
794 	return 0;
795 }
796 
797 static int solo_enc_set_input(struct file *file, void *priv,
798 			      unsigned int index)
799 {
800 	if (index)
801 		return -EINVAL;
802 
803 	return 0;
804 }
805 
806 static int solo_enc_get_input(struct file *file, void *priv,
807 			      unsigned int *index)
808 {
809 	*index = 0;
810 
811 	return 0;
812 }
813 
814 static int solo_enc_enum_fmt_cap(struct file *file, void *priv,
815 				 struct v4l2_fmtdesc *f)
816 {
817 	struct solo_enc_dev *solo_enc = video_drvdata(file);
818 	int dev_type = solo_enc->solo_dev->type;
819 
820 	switch (f->index) {
821 	case 0:
822 		switch (dev_type) {
823 		case SOLO_DEV_6010:
824 			f->pixelformat = V4L2_PIX_FMT_MPEG4;
825 			break;
826 		case SOLO_DEV_6110:
827 			f->pixelformat = V4L2_PIX_FMT_H264;
828 			break;
829 		}
830 		break;
831 	case 1:
832 		f->pixelformat = V4L2_PIX_FMT_MJPEG;
833 		break;
834 	default:
835 		return -EINVAL;
836 	}
837 	return 0;
838 }
839 
840 static inline int solo_valid_pixfmt(u32 pixfmt, int dev_type)
841 {
842 	return (pixfmt == V4L2_PIX_FMT_H264 && dev_type == SOLO_DEV_6110)
843 		|| (pixfmt == V4L2_PIX_FMT_MPEG4 && dev_type == SOLO_DEV_6010)
844 		|| pixfmt == V4L2_PIX_FMT_MJPEG ? 0 : -EINVAL;
845 }
846 
847 static int solo_enc_try_fmt_cap(struct file *file, void *priv,
848 			    struct v4l2_format *f)
849 {
850 	struct solo_enc_dev *solo_enc = video_drvdata(file);
851 	struct solo_dev *solo_dev = solo_enc->solo_dev;
852 	struct v4l2_pix_format *pix = &f->fmt.pix;
853 
854 	if (solo_valid_pixfmt(pix->pixelformat, solo_dev->type))
855 		return -EINVAL;
856 
857 	if (pix->width < solo_dev->video_hsize ||
858 	    pix->height < solo_dev->video_vsize << 1) {
859 		/* Default to CIF 1/2 size */
860 		pix->width = solo_dev->video_hsize >> 1;
861 		pix->height = solo_dev->video_vsize;
862 	} else {
863 		/* Full frame */
864 		pix->width = solo_dev->video_hsize;
865 		pix->height = solo_dev->video_vsize << 1;
866 	}
867 
868 	switch (pix->field) {
869 	case V4L2_FIELD_NONE:
870 	case V4L2_FIELD_INTERLACED:
871 		break;
872 	case V4L2_FIELD_ANY:
873 	default:
874 		pix->field = V4L2_FIELD_INTERLACED;
875 		break;
876 	}
877 
878 	/* Just set these */
879 	pix->colorspace = V4L2_COLORSPACE_SMPTE170M;
880 	pix->sizeimage = FRAME_BUF_SIZE;
881 	pix->bytesperline = 0;
882 
883 	return 0;
884 }
885 
886 static int solo_enc_set_fmt_cap(struct file *file, void *priv,
887 				struct v4l2_format *f)
888 {
889 	struct solo_enc_dev *solo_enc = video_drvdata(file);
890 	struct solo_dev *solo_dev = solo_enc->solo_dev;
891 	struct v4l2_pix_format *pix = &f->fmt.pix;
892 	int ret;
893 
894 	if (vb2_is_busy(&solo_enc->vidq))
895 		return -EBUSY;
896 
897 	ret = solo_enc_try_fmt_cap(file, priv, f);
898 	if (ret)
899 		return ret;
900 
901 	if (pix->width == solo_dev->video_hsize)
902 		solo_enc->mode = SOLO_ENC_MODE_D1;
903 	else
904 		solo_enc->mode = SOLO_ENC_MODE_CIF;
905 
906 	/* This does not change the encoder at all */
907 	solo_enc->fmt = pix->pixelformat;
908 
909 	/*
910 	 * More information is needed about these 'extended' types. As far
911 	 * as I can tell these are basically additional video streams with
912 	 * different MPEG encoding attributes that can run in parallel with
913 	 * the main stream. If so, then this should be implemented as a
914 	 * second video node. Abusing priv like this is certainly not the
915 	 * right approach.
916 	if (pix->priv)
917 		solo_enc->type = SOLO_ENC_TYPE_EXT;
918 	 */
919 	solo_update_mode(solo_enc);
920 	return 0;
921 }
922 
923 static int solo_enc_get_fmt_cap(struct file *file, void *priv,
924 				struct v4l2_format *f)
925 {
926 	struct solo_enc_dev *solo_enc = video_drvdata(file);
927 	struct v4l2_pix_format *pix = &f->fmt.pix;
928 
929 	pix->width = solo_enc->width;
930 	pix->height = solo_enc->height;
931 	pix->pixelformat = solo_enc->fmt;
932 	pix->field = solo_enc->interlaced ? V4L2_FIELD_INTERLACED :
933 		     V4L2_FIELD_NONE;
934 	pix->sizeimage = FRAME_BUF_SIZE;
935 	pix->colorspace = V4L2_COLORSPACE_SMPTE170M;
936 
937 	return 0;
938 }
939 
940 static int solo_enc_g_std(struct file *file, void *priv, v4l2_std_id *i)
941 {
942 	struct solo_enc_dev *solo_enc = video_drvdata(file);
943 	struct solo_dev *solo_dev = solo_enc->solo_dev;
944 
945 	if (solo_dev->video_type == SOLO_VO_FMT_TYPE_NTSC)
946 		*i = V4L2_STD_NTSC_M;
947 	else
948 		*i = V4L2_STD_PAL;
949 	return 0;
950 }
951 
952 static int solo_enc_s_std(struct file *file, void *priv, v4l2_std_id std)
953 {
954 	struct solo_enc_dev *solo_enc = video_drvdata(file);
955 
956 	return solo_set_video_type(solo_enc->solo_dev, std & V4L2_STD_625_50);
957 }
958 
959 static int solo_enum_framesizes(struct file *file, void *priv,
960 				struct v4l2_frmsizeenum *fsize)
961 {
962 	struct solo_enc_dev *solo_enc = video_drvdata(file);
963 	struct solo_dev *solo_dev = solo_enc->solo_dev;
964 
965 	if (solo_valid_pixfmt(fsize->pixel_format, solo_dev->type))
966 		return -EINVAL;
967 
968 	switch (fsize->index) {
969 	case 0:
970 		fsize->discrete.width = solo_dev->video_hsize >> 1;
971 		fsize->discrete.height = solo_dev->video_vsize;
972 		break;
973 	case 1:
974 		fsize->discrete.width = solo_dev->video_hsize;
975 		fsize->discrete.height = solo_dev->video_vsize << 1;
976 		break;
977 	default:
978 		return -EINVAL;
979 	}
980 
981 	fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
982 
983 	return 0;
984 }
985 
986 static int solo_enum_frameintervals(struct file *file, void *priv,
987 				    struct v4l2_frmivalenum *fintv)
988 {
989 	struct solo_enc_dev *solo_enc = video_drvdata(file);
990 	struct solo_dev *solo_dev = solo_enc->solo_dev;
991 
992 	if (solo_valid_pixfmt(fintv->pixel_format, solo_dev->type))
993 		return -EINVAL;
994 	if (fintv->index)
995 		return -EINVAL;
996 	if ((fintv->width != solo_dev->video_hsize >> 1 ||
997 	     fintv->height != solo_dev->video_vsize) &&
998 	    (fintv->width != solo_dev->video_hsize ||
999 	     fintv->height != solo_dev->video_vsize << 1))
1000 		return -EINVAL;
1001 
1002 	fintv->type = V4L2_FRMIVAL_TYPE_STEPWISE;
1003 
1004 	fintv->stepwise.min.numerator = 1;
1005 	fintv->stepwise.min.denominator = solo_dev->fps;
1006 
1007 	fintv->stepwise.max.numerator = 15;
1008 	fintv->stepwise.max.denominator = solo_dev->fps;
1009 
1010 	fintv->stepwise.step.numerator = 1;
1011 	fintv->stepwise.step.denominator = solo_dev->fps;
1012 
1013 	return 0;
1014 }
1015 
1016 static int solo_g_parm(struct file *file, void *priv,
1017 		       struct v4l2_streamparm *sp)
1018 {
1019 	struct solo_enc_dev *solo_enc = video_drvdata(file);
1020 	struct v4l2_captureparm *cp = &sp->parm.capture;
1021 
1022 	cp->capability = V4L2_CAP_TIMEPERFRAME;
1023 	cp->timeperframe.numerator = solo_enc->interval;
1024 	cp->timeperframe.denominator = solo_enc->solo_dev->fps;
1025 	cp->capturemode = 0;
1026 	/* XXX: Shouldn't we be able to get/set this from videobuf? */
1027 	cp->readbuffers = 2;
1028 
1029 	return 0;
1030 }
1031 
1032 static inline int calc_interval(u8 fps, u32 n, u32 d)
1033 {
1034 	if (!n || !d)
1035 		return 1;
1036 	if (d == fps)
1037 		return n;
1038 	n *= fps;
1039 	return min(15U, n / d + (n % d >= (fps >> 1)));
1040 }
1041 
1042 static int solo_s_parm(struct file *file, void *priv,
1043 		       struct v4l2_streamparm *sp)
1044 {
1045 	struct solo_enc_dev *solo_enc = video_drvdata(file);
1046 	struct v4l2_fract *t = &sp->parm.capture.timeperframe;
1047 	u8 fps = solo_enc->solo_dev->fps;
1048 
1049 	if (vb2_is_streaming(&solo_enc->vidq))
1050 		return -EBUSY;
1051 
1052 	solo_enc->interval = calc_interval(fps, t->numerator, t->denominator);
1053 	solo_update_mode(solo_enc);
1054 	return solo_g_parm(file, priv, sp);
1055 }
1056 
1057 static int solo_s_ctrl(struct v4l2_ctrl *ctrl)
1058 {
1059 	struct solo_enc_dev *solo_enc =
1060 		container_of(ctrl->handler, struct solo_enc_dev, hdl);
1061 	struct solo_dev *solo_dev = solo_enc->solo_dev;
1062 	int err;
1063 
1064 	switch (ctrl->id) {
1065 	case V4L2_CID_BRIGHTNESS:
1066 	case V4L2_CID_CONTRAST:
1067 	case V4L2_CID_SATURATION:
1068 	case V4L2_CID_HUE:
1069 	case V4L2_CID_SHARPNESS:
1070 		return tw28_set_ctrl_val(solo_dev, ctrl->id, solo_enc->ch,
1071 					 ctrl->val);
1072 	case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
1073 		solo_enc->gop = ctrl->val;
1074 		solo_reg_write(solo_dev, SOLO_VE_CH_GOP(solo_enc->ch), solo_enc->gop);
1075 		solo_reg_write(solo_dev, SOLO_VE_CH_GOP_E(solo_enc->ch), solo_enc->gop);
1076 		return 0;
1077 	case V4L2_CID_MPEG_VIDEO_H264_MIN_QP:
1078 		solo_enc->qp = ctrl->val;
1079 		solo_reg_write(solo_dev, SOLO_VE_CH_QP(solo_enc->ch), solo_enc->qp);
1080 		solo_reg_write(solo_dev, SOLO_VE_CH_QP_E(solo_enc->ch), solo_enc->qp);
1081 		return 0;
1082 	case V4L2_CID_DETECT_MD_GLOBAL_THRESHOLD:
1083 		solo_enc->motion_thresh = ctrl->val << 8;
1084 		if (!solo_enc->motion_global || !solo_enc->motion_enabled)
1085 			return 0;
1086 		return solo_set_motion_threshold(solo_dev, solo_enc->ch,
1087 				solo_enc->motion_thresh);
1088 	case V4L2_CID_DETECT_MD_MODE:
1089 		solo_enc->motion_global = ctrl->val == V4L2_DETECT_MD_MODE_GLOBAL;
1090 		solo_enc->motion_enabled = ctrl->val > V4L2_DETECT_MD_MODE_DISABLED;
1091 		if (ctrl->val) {
1092 			if (solo_enc->motion_global)
1093 				err = solo_set_motion_threshold(solo_dev, solo_enc->ch,
1094 					solo_enc->motion_thresh);
1095 			else
1096 				err = solo_set_motion_block(solo_dev, solo_enc->ch,
1097 					solo_enc->md_thresholds->p_cur.p_u16);
1098 			if (err)
1099 				return err;
1100 		}
1101 		solo_motion_toggle(solo_enc, ctrl->val);
1102 		return 0;
1103 	case V4L2_CID_DETECT_MD_THRESHOLD_GRID:
1104 		if (solo_enc->motion_enabled && !solo_enc->motion_global)
1105 			return solo_set_motion_block(solo_dev, solo_enc->ch,
1106 					solo_enc->md_thresholds->p_new.p_u16);
1107 		break;
1108 	case V4L2_CID_OSD_TEXT:
1109 		strscpy(solo_enc->osd_text, ctrl->p_new.p_char,
1110 			sizeof(solo_enc->osd_text));
1111 		return solo_osd_print(solo_enc);
1112 	default:
1113 		return -EINVAL;
1114 	}
1115 
1116 	return 0;
1117 }
1118 
1119 static int solo_subscribe_event(struct v4l2_fh *fh,
1120 				const struct v4l2_event_subscription *sub)
1121 {
1122 
1123 	switch (sub->type) {
1124 	case V4L2_EVENT_MOTION_DET:
1125 		/* Allow for up to 30 events (1 second for NTSC) to be
1126 		 * stored. */
1127 		return v4l2_event_subscribe(fh, sub, 30, NULL);
1128 	default:
1129 		return v4l2_ctrl_subscribe_event(fh, sub);
1130 	}
1131 }
1132 
1133 static const struct v4l2_file_operations solo_enc_fops = {
1134 	.owner			= THIS_MODULE,
1135 	.open			= v4l2_fh_open,
1136 	.release		= vb2_fop_release,
1137 	.read			= vb2_fop_read,
1138 	.poll			= vb2_fop_poll,
1139 	.mmap			= vb2_fop_mmap,
1140 	.unlocked_ioctl		= video_ioctl2,
1141 };
1142 
1143 static const struct v4l2_ioctl_ops solo_enc_ioctl_ops = {
1144 	.vidioc_querycap		= solo_enc_querycap,
1145 	.vidioc_s_std			= solo_enc_s_std,
1146 	.vidioc_g_std			= solo_enc_g_std,
1147 	/* Input callbacks */
1148 	.vidioc_enum_input		= solo_enc_enum_input,
1149 	.vidioc_s_input			= solo_enc_set_input,
1150 	.vidioc_g_input			= solo_enc_get_input,
1151 	/* Video capture format callbacks */
1152 	.vidioc_enum_fmt_vid_cap	= solo_enc_enum_fmt_cap,
1153 	.vidioc_try_fmt_vid_cap		= solo_enc_try_fmt_cap,
1154 	.vidioc_s_fmt_vid_cap		= solo_enc_set_fmt_cap,
1155 	.vidioc_g_fmt_vid_cap		= solo_enc_get_fmt_cap,
1156 	/* Streaming I/O */
1157 	.vidioc_reqbufs			= vb2_ioctl_reqbufs,
1158 	.vidioc_querybuf		= vb2_ioctl_querybuf,
1159 	.vidioc_qbuf			= vb2_ioctl_qbuf,
1160 	.vidioc_dqbuf			= vb2_ioctl_dqbuf,
1161 	.vidioc_streamon		= vb2_ioctl_streamon,
1162 	.vidioc_streamoff		= vb2_ioctl_streamoff,
1163 	/* Frame size and interval */
1164 	.vidioc_enum_framesizes		= solo_enum_framesizes,
1165 	.vidioc_enum_frameintervals	= solo_enum_frameintervals,
1166 	/* Video capture parameters */
1167 	.vidioc_s_parm			= solo_s_parm,
1168 	.vidioc_g_parm			= solo_g_parm,
1169 	/* Logging and events */
1170 	.vidioc_log_status		= v4l2_ctrl_log_status,
1171 	.vidioc_subscribe_event		= solo_subscribe_event,
1172 	.vidioc_unsubscribe_event	= v4l2_event_unsubscribe,
1173 };
1174 
1175 static const struct video_device solo_enc_template = {
1176 	.name			= SOLO6X10_NAME,
1177 	.fops			= &solo_enc_fops,
1178 	.ioctl_ops		= &solo_enc_ioctl_ops,
1179 	.minor			= -1,
1180 	.release		= video_device_release,
1181 	.tvnorms		= V4L2_STD_NTSC_M | V4L2_STD_PAL,
1182 	.device_caps		= V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
1183 				  V4L2_CAP_STREAMING,
1184 };
1185 
1186 static const struct v4l2_ctrl_ops solo_ctrl_ops = {
1187 	.s_ctrl = solo_s_ctrl,
1188 };
1189 
1190 static const struct v4l2_ctrl_config solo_osd_text_ctrl = {
1191 	.ops = &solo_ctrl_ops,
1192 	.id = V4L2_CID_OSD_TEXT,
1193 	.name = "OSD Text",
1194 	.type = V4L2_CTRL_TYPE_STRING,
1195 	.max = OSD_TEXT_MAX,
1196 	.step = 1,
1197 };
1198 
1199 /* Motion Detection Threshold matrix */
1200 static const struct v4l2_ctrl_config solo_md_thresholds = {
1201 	.ops = &solo_ctrl_ops,
1202 	.id = V4L2_CID_DETECT_MD_THRESHOLD_GRID,
1203 	.dims = { SOLO_MOTION_SZ, SOLO_MOTION_SZ },
1204 	.def = SOLO_DEF_MOT_THRESH,
1205 	.max = 65535,
1206 	.step = 1,
1207 };
1208 
1209 static struct solo_enc_dev *solo_enc_alloc(struct solo_dev *solo_dev,
1210 					   u8 ch, unsigned nr)
1211 {
1212 	struct solo_enc_dev *solo_enc;
1213 	struct v4l2_ctrl_handler *hdl;
1214 	int ret;
1215 
1216 	solo_enc = kzalloc(sizeof(*solo_enc), GFP_KERNEL);
1217 	if (!solo_enc)
1218 		return ERR_PTR(-ENOMEM);
1219 
1220 	hdl = &solo_enc->hdl;
1221 	v4l2_ctrl_handler_init(hdl, 10);
1222 	v4l2_ctrl_new_std(hdl, &solo_ctrl_ops,
1223 			V4L2_CID_BRIGHTNESS, 0, 255, 1, 128);
1224 	v4l2_ctrl_new_std(hdl, &solo_ctrl_ops,
1225 			V4L2_CID_CONTRAST, 0, 255, 1, 128);
1226 	v4l2_ctrl_new_std(hdl, &solo_ctrl_ops,
1227 			V4L2_CID_SATURATION, 0, 255, 1, 128);
1228 	v4l2_ctrl_new_std(hdl, &solo_ctrl_ops,
1229 			V4L2_CID_HUE, 0, 255, 1, 128);
1230 	if (tw28_has_sharpness(solo_dev, ch))
1231 		v4l2_ctrl_new_std(hdl, &solo_ctrl_ops,
1232 			V4L2_CID_SHARPNESS, 0, 15, 1, 0);
1233 	v4l2_ctrl_new_std(hdl, &solo_ctrl_ops,
1234 			V4L2_CID_MPEG_VIDEO_GOP_SIZE, 1, 255, 1, solo_dev->fps);
1235 	v4l2_ctrl_new_std(hdl, &solo_ctrl_ops,
1236 			V4L2_CID_MPEG_VIDEO_H264_MIN_QP, 0, 31, 1, SOLO_DEFAULT_QP);
1237 	v4l2_ctrl_new_std_menu(hdl, &solo_ctrl_ops,
1238 			V4L2_CID_DETECT_MD_MODE,
1239 			V4L2_DETECT_MD_MODE_THRESHOLD_GRID, 0,
1240 			V4L2_DETECT_MD_MODE_DISABLED);
1241 	v4l2_ctrl_new_std(hdl, &solo_ctrl_ops,
1242 			V4L2_CID_DETECT_MD_GLOBAL_THRESHOLD, 0, 0xff, 1,
1243 			SOLO_DEF_MOT_THRESH >> 8);
1244 	v4l2_ctrl_new_custom(hdl, &solo_osd_text_ctrl, NULL);
1245 	solo_enc->md_thresholds =
1246 		v4l2_ctrl_new_custom(hdl, &solo_md_thresholds, NULL);
1247 	if (hdl->error) {
1248 		ret = hdl->error;
1249 		goto hdl_free;
1250 	}
1251 
1252 	solo_enc->solo_dev = solo_dev;
1253 	solo_enc->ch = ch;
1254 	mutex_init(&solo_enc->lock);
1255 	spin_lock_init(&solo_enc->av_lock);
1256 	INIT_LIST_HEAD(&solo_enc->vidq_active);
1257 	solo_enc->fmt = (solo_dev->type == SOLO_DEV_6010) ?
1258 		V4L2_PIX_FMT_MPEG4 : V4L2_PIX_FMT_H264;
1259 	solo_enc->type = SOLO_ENC_TYPE_STD;
1260 
1261 	solo_enc->qp = SOLO_DEFAULT_QP;
1262 	solo_enc->gop = solo_dev->fps;
1263 	solo_enc->interval = 1;
1264 	solo_enc->mode = SOLO_ENC_MODE_CIF;
1265 	solo_enc->motion_global = true;
1266 	solo_enc->motion_thresh = SOLO_DEF_MOT_THRESH;
1267 	solo_enc->vidq.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1268 	solo_enc->vidq.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ;
1269 	solo_enc->vidq.ops = &solo_enc_video_qops;
1270 	solo_enc->vidq.mem_ops = &vb2_dma_sg_memops;
1271 	solo_enc->vidq.drv_priv = solo_enc;
1272 	solo_enc->vidq.gfp_flags = __GFP_DMA32 | __GFP_KSWAPD_RECLAIM;
1273 	solo_enc->vidq.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1274 	solo_enc->vidq.buf_struct_size = sizeof(struct solo_vb2_buf);
1275 	solo_enc->vidq.lock = &solo_enc->lock;
1276 	solo_enc->vidq.dev = &solo_dev->pdev->dev;
1277 	ret = vb2_queue_init(&solo_enc->vidq);
1278 	if (ret)
1279 		goto hdl_free;
1280 	solo_update_mode(solo_enc);
1281 
1282 	spin_lock_init(&solo_enc->motion_lock);
1283 
1284 	/* Initialize this per encoder */
1285 	solo_enc->jpeg_len = sizeof(jpeg_header);
1286 	memcpy(solo_enc->jpeg_header, jpeg_header, solo_enc->jpeg_len);
1287 
1288 	solo_enc->desc_nelts = 32;
1289 	solo_enc->desc_items = pci_alloc_consistent(solo_dev->pdev,
1290 				      sizeof(struct solo_p2m_desc) *
1291 				      solo_enc->desc_nelts,
1292 				      &solo_enc->desc_dma);
1293 	ret = -ENOMEM;
1294 	if (solo_enc->desc_items == NULL)
1295 		goto hdl_free;
1296 
1297 	solo_enc->vfd = video_device_alloc();
1298 	if (!solo_enc->vfd)
1299 		goto pci_free;
1300 
1301 	*solo_enc->vfd = solo_enc_template;
1302 	solo_enc->vfd->v4l2_dev = &solo_dev->v4l2_dev;
1303 	solo_enc->vfd->ctrl_handler = hdl;
1304 	solo_enc->vfd->queue = &solo_enc->vidq;
1305 	solo_enc->vfd->lock = &solo_enc->lock;
1306 	video_set_drvdata(solo_enc->vfd, solo_enc);
1307 	ret = video_register_device(solo_enc->vfd, VFL_TYPE_VIDEO, nr);
1308 	if (ret < 0)
1309 		goto vdev_release;
1310 
1311 	snprintf(solo_enc->vfd->name, sizeof(solo_enc->vfd->name),
1312 		 "%s-enc (%i/%i)", SOLO6X10_NAME, solo_dev->vfd->num,
1313 		 solo_enc->vfd->num);
1314 
1315 	return solo_enc;
1316 
1317 vdev_release:
1318 	video_device_release(solo_enc->vfd);
1319 pci_free:
1320 	pci_free_consistent(solo_enc->solo_dev->pdev,
1321 			sizeof(struct solo_p2m_desc) * solo_enc->desc_nelts,
1322 			solo_enc->desc_items, solo_enc->desc_dma);
1323 hdl_free:
1324 	v4l2_ctrl_handler_free(hdl);
1325 	kfree(solo_enc);
1326 	return ERR_PTR(ret);
1327 }
1328 
1329 static void solo_enc_free(struct solo_enc_dev *solo_enc)
1330 {
1331 	if (solo_enc == NULL)
1332 		return;
1333 
1334 	pci_free_consistent(solo_enc->solo_dev->pdev,
1335 			sizeof(struct solo_p2m_desc) * solo_enc->desc_nelts,
1336 			solo_enc->desc_items, solo_enc->desc_dma);
1337 	video_unregister_device(solo_enc->vfd);
1338 	v4l2_ctrl_handler_free(&solo_enc->hdl);
1339 	kfree(solo_enc);
1340 }
1341 
1342 int solo_enc_v4l2_init(struct solo_dev *solo_dev, unsigned nr)
1343 {
1344 	int i;
1345 
1346 	init_waitqueue_head(&solo_dev->ring_thread_wait);
1347 
1348 	solo_dev->vh_size = sizeof(vop_header);
1349 	solo_dev->vh_buf = pci_alloc_consistent(solo_dev->pdev,
1350 						solo_dev->vh_size,
1351 						&solo_dev->vh_dma);
1352 	if (solo_dev->vh_buf == NULL)
1353 		return -ENOMEM;
1354 
1355 	for (i = 0; i < solo_dev->nr_chans; i++) {
1356 		solo_dev->v4l2_enc[i] = solo_enc_alloc(solo_dev, i, nr);
1357 		if (IS_ERR(solo_dev->v4l2_enc[i]))
1358 			break;
1359 	}
1360 
1361 	if (i != solo_dev->nr_chans) {
1362 		int ret = PTR_ERR(solo_dev->v4l2_enc[i]);
1363 
1364 		while (i--)
1365 			solo_enc_free(solo_dev->v4l2_enc[i]);
1366 		pci_free_consistent(solo_dev->pdev, solo_dev->vh_size,
1367 				    solo_dev->vh_buf, solo_dev->vh_dma);
1368 		solo_dev->vh_buf = NULL;
1369 		return ret;
1370 	}
1371 
1372 	if (solo_dev->type == SOLO_DEV_6010)
1373 		solo_dev->enc_bw_remain = solo_dev->fps * 4 * 4;
1374 	else
1375 		solo_dev->enc_bw_remain = solo_dev->fps * 4 * 5;
1376 
1377 	dev_info(&solo_dev->pdev->dev, "Encoders as /dev/video%d-%d\n",
1378 		 solo_dev->v4l2_enc[0]->vfd->num,
1379 		 solo_dev->v4l2_enc[solo_dev->nr_chans - 1]->vfd->num);
1380 
1381 	return solo_ring_start(solo_dev);
1382 }
1383 
1384 void solo_enc_v4l2_exit(struct solo_dev *solo_dev)
1385 {
1386 	int i;
1387 
1388 	solo_ring_stop(solo_dev);
1389 
1390 	for (i = 0; i < solo_dev->nr_chans; i++)
1391 		solo_enc_free(solo_dev->v4l2_enc[i]);
1392 
1393 	if (solo_dev->vh_buf)
1394 		pci_free_consistent(solo_dev->pdev, solo_dev->vh_size,
1395 			    solo_dev->vh_buf, solo_dev->vh_dma);
1396 }
1397