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 __always_unused int vop_interlaced(const vop_header *vh)
395 {
396 	return (__le32_to_cpu((*vh)[0]) >> 30) & 1;
397 }
398 
399 static inline __always_unused 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 __always_unused vop_hsize(const vop_header *vh)
415 {
416 	return (__le32_to_cpu((*vh)[1]) >> 8) & 0xFF;
417 }
418 
419 static inline u8 __always_unused 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 __always_unused vop_sec(const vop_header *vh)
440 {
441 	return __le32_to_cpu((*vh)[5]);
442 }
443 
444 static inline __always_unused 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 
768 	strscpy(cap->driver, SOLO6X10_NAME, sizeof(cap->driver));
769 	snprintf(cap->card, sizeof(cap->card), "Softlogic 6x10 Enc %d",
770 		 solo_enc->ch);
771 	return 0;
772 }
773 
774 static int solo_enc_enum_input(struct file *file, void *priv,
775 			       struct v4l2_input *input)
776 {
777 	struct solo_enc_dev *solo_enc = video_drvdata(file);
778 	struct solo_dev *solo_dev = solo_enc->solo_dev;
779 
780 	if (input->index)
781 		return -EINVAL;
782 
783 	snprintf(input->name, sizeof(input->name), "Encoder %d",
784 		 solo_enc->ch + 1);
785 	input->type = V4L2_INPUT_TYPE_CAMERA;
786 	input->std = solo_enc->vfd->tvnorms;
787 
788 	if (!tw28_get_video_status(solo_dev, solo_enc->ch))
789 		input->status = V4L2_IN_ST_NO_SIGNAL;
790 
791 	return 0;
792 }
793 
794 static int solo_enc_set_input(struct file *file, void *priv,
795 			      unsigned int index)
796 {
797 	if (index)
798 		return -EINVAL;
799 
800 	return 0;
801 }
802 
803 static int solo_enc_get_input(struct file *file, void *priv,
804 			      unsigned int *index)
805 {
806 	*index = 0;
807 
808 	return 0;
809 }
810 
811 static int solo_enc_enum_fmt_cap(struct file *file, void *priv,
812 				 struct v4l2_fmtdesc *f)
813 {
814 	struct solo_enc_dev *solo_enc = video_drvdata(file);
815 	int dev_type = solo_enc->solo_dev->type;
816 
817 	switch (f->index) {
818 	case 0:
819 		switch (dev_type) {
820 		case SOLO_DEV_6010:
821 			f->pixelformat = V4L2_PIX_FMT_MPEG4;
822 			break;
823 		case SOLO_DEV_6110:
824 			f->pixelformat = V4L2_PIX_FMT_H264;
825 			break;
826 		}
827 		break;
828 	case 1:
829 		f->pixelformat = V4L2_PIX_FMT_MJPEG;
830 		break;
831 	default:
832 		return -EINVAL;
833 	}
834 	return 0;
835 }
836 
837 static inline int solo_valid_pixfmt(u32 pixfmt, int dev_type)
838 {
839 	return (pixfmt == V4L2_PIX_FMT_H264 && dev_type == SOLO_DEV_6110)
840 		|| (pixfmt == V4L2_PIX_FMT_MPEG4 && dev_type == SOLO_DEV_6010)
841 		|| pixfmt == V4L2_PIX_FMT_MJPEG ? 0 : -EINVAL;
842 }
843 
844 static int solo_enc_try_fmt_cap(struct file *file, void *priv,
845 			    struct v4l2_format *f)
846 {
847 	struct solo_enc_dev *solo_enc = video_drvdata(file);
848 	struct solo_dev *solo_dev = solo_enc->solo_dev;
849 	struct v4l2_pix_format *pix = &f->fmt.pix;
850 
851 	if (solo_valid_pixfmt(pix->pixelformat, solo_dev->type))
852 		return -EINVAL;
853 
854 	if (pix->width < solo_dev->video_hsize ||
855 	    pix->height < solo_dev->video_vsize << 1) {
856 		/* Default to CIF 1/2 size */
857 		pix->width = solo_dev->video_hsize >> 1;
858 		pix->height = solo_dev->video_vsize;
859 	} else {
860 		/* Full frame */
861 		pix->width = solo_dev->video_hsize;
862 		pix->height = solo_dev->video_vsize << 1;
863 	}
864 
865 	switch (pix->field) {
866 	case V4L2_FIELD_NONE:
867 	case V4L2_FIELD_INTERLACED:
868 		break;
869 	case V4L2_FIELD_ANY:
870 	default:
871 		pix->field = V4L2_FIELD_INTERLACED;
872 		break;
873 	}
874 
875 	/* Just set these */
876 	pix->colorspace = V4L2_COLORSPACE_SMPTE170M;
877 	pix->sizeimage = FRAME_BUF_SIZE;
878 	pix->bytesperline = 0;
879 
880 	return 0;
881 }
882 
883 static int solo_enc_set_fmt_cap(struct file *file, void *priv,
884 				struct v4l2_format *f)
885 {
886 	struct solo_enc_dev *solo_enc = video_drvdata(file);
887 	struct solo_dev *solo_dev = solo_enc->solo_dev;
888 	struct v4l2_pix_format *pix = &f->fmt.pix;
889 	int ret;
890 
891 	if (vb2_is_busy(&solo_enc->vidq))
892 		return -EBUSY;
893 
894 	ret = solo_enc_try_fmt_cap(file, priv, f);
895 	if (ret)
896 		return ret;
897 
898 	if (pix->width == solo_dev->video_hsize)
899 		solo_enc->mode = SOLO_ENC_MODE_D1;
900 	else
901 		solo_enc->mode = SOLO_ENC_MODE_CIF;
902 
903 	/* This does not change the encoder at all */
904 	solo_enc->fmt = pix->pixelformat;
905 
906 	/*
907 	 * More information is needed about these 'extended' types. As far
908 	 * as I can tell these are basically additional video streams with
909 	 * different MPEG encoding attributes that can run in parallel with
910 	 * the main stream. If so, then this should be implemented as a
911 	 * second video node. Abusing priv like this is certainly not the
912 	 * right approach.
913 	if (pix->priv)
914 		solo_enc->type = SOLO_ENC_TYPE_EXT;
915 	 */
916 	solo_update_mode(solo_enc);
917 	return 0;
918 }
919 
920 static int solo_enc_get_fmt_cap(struct file *file, void *priv,
921 				struct v4l2_format *f)
922 {
923 	struct solo_enc_dev *solo_enc = video_drvdata(file);
924 	struct v4l2_pix_format *pix = &f->fmt.pix;
925 
926 	pix->width = solo_enc->width;
927 	pix->height = solo_enc->height;
928 	pix->pixelformat = solo_enc->fmt;
929 	pix->field = solo_enc->interlaced ? V4L2_FIELD_INTERLACED :
930 		     V4L2_FIELD_NONE;
931 	pix->sizeimage = FRAME_BUF_SIZE;
932 	pix->colorspace = V4L2_COLORSPACE_SMPTE170M;
933 
934 	return 0;
935 }
936 
937 static int solo_enc_g_std(struct file *file, void *priv, v4l2_std_id *i)
938 {
939 	struct solo_enc_dev *solo_enc = video_drvdata(file);
940 	struct solo_dev *solo_dev = solo_enc->solo_dev;
941 
942 	if (solo_dev->video_type == SOLO_VO_FMT_TYPE_NTSC)
943 		*i = V4L2_STD_NTSC_M;
944 	else
945 		*i = V4L2_STD_PAL;
946 	return 0;
947 }
948 
949 static int solo_enc_s_std(struct file *file, void *priv, v4l2_std_id std)
950 {
951 	struct solo_enc_dev *solo_enc = video_drvdata(file);
952 
953 	return solo_set_video_type(solo_enc->solo_dev, std & V4L2_STD_625_50);
954 }
955 
956 static int solo_enum_framesizes(struct file *file, void *priv,
957 				struct v4l2_frmsizeenum *fsize)
958 {
959 	struct solo_enc_dev *solo_enc = video_drvdata(file);
960 	struct solo_dev *solo_dev = solo_enc->solo_dev;
961 
962 	if (solo_valid_pixfmt(fsize->pixel_format, solo_dev->type))
963 		return -EINVAL;
964 
965 	switch (fsize->index) {
966 	case 0:
967 		fsize->discrete.width = solo_dev->video_hsize >> 1;
968 		fsize->discrete.height = solo_dev->video_vsize;
969 		break;
970 	case 1:
971 		fsize->discrete.width = solo_dev->video_hsize;
972 		fsize->discrete.height = solo_dev->video_vsize << 1;
973 		break;
974 	default:
975 		return -EINVAL;
976 	}
977 
978 	fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
979 
980 	return 0;
981 }
982 
983 static int solo_enum_frameintervals(struct file *file, void *priv,
984 				    struct v4l2_frmivalenum *fintv)
985 {
986 	struct solo_enc_dev *solo_enc = video_drvdata(file);
987 	struct solo_dev *solo_dev = solo_enc->solo_dev;
988 
989 	if (solo_valid_pixfmt(fintv->pixel_format, solo_dev->type))
990 		return -EINVAL;
991 	if (fintv->index)
992 		return -EINVAL;
993 	if ((fintv->width != solo_dev->video_hsize >> 1 ||
994 	     fintv->height != solo_dev->video_vsize) &&
995 	    (fintv->width != solo_dev->video_hsize ||
996 	     fintv->height != solo_dev->video_vsize << 1))
997 		return -EINVAL;
998 
999 	fintv->type = V4L2_FRMIVAL_TYPE_STEPWISE;
1000 
1001 	fintv->stepwise.min.numerator = 1;
1002 	fintv->stepwise.min.denominator = solo_dev->fps;
1003 
1004 	fintv->stepwise.max.numerator = 15;
1005 	fintv->stepwise.max.denominator = solo_dev->fps;
1006 
1007 	fintv->stepwise.step.numerator = 1;
1008 	fintv->stepwise.step.denominator = solo_dev->fps;
1009 
1010 	return 0;
1011 }
1012 
1013 static int solo_g_parm(struct file *file, void *priv,
1014 		       struct v4l2_streamparm *sp)
1015 {
1016 	struct solo_enc_dev *solo_enc = video_drvdata(file);
1017 	struct v4l2_captureparm *cp = &sp->parm.capture;
1018 
1019 	cp->capability = V4L2_CAP_TIMEPERFRAME;
1020 	cp->timeperframe.numerator = solo_enc->interval;
1021 	cp->timeperframe.denominator = solo_enc->solo_dev->fps;
1022 	cp->capturemode = 0;
1023 	/* XXX: Shouldn't we be able to get/set this from videobuf? */
1024 	cp->readbuffers = 2;
1025 
1026 	return 0;
1027 }
1028 
1029 static inline int calc_interval(u8 fps, u32 n, u32 d)
1030 {
1031 	if (!n || !d)
1032 		return 1;
1033 	if (d == fps)
1034 		return n;
1035 	n *= fps;
1036 	return min(15U, n / d + (n % d >= (fps >> 1)));
1037 }
1038 
1039 static int solo_s_parm(struct file *file, void *priv,
1040 		       struct v4l2_streamparm *sp)
1041 {
1042 	struct solo_enc_dev *solo_enc = video_drvdata(file);
1043 	struct v4l2_fract *t = &sp->parm.capture.timeperframe;
1044 	u8 fps = solo_enc->solo_dev->fps;
1045 
1046 	if (vb2_is_streaming(&solo_enc->vidq))
1047 		return -EBUSY;
1048 
1049 	solo_enc->interval = calc_interval(fps, t->numerator, t->denominator);
1050 	solo_update_mode(solo_enc);
1051 	return solo_g_parm(file, priv, sp);
1052 }
1053 
1054 static int solo_s_ctrl(struct v4l2_ctrl *ctrl)
1055 {
1056 	struct solo_enc_dev *solo_enc =
1057 		container_of(ctrl->handler, struct solo_enc_dev, hdl);
1058 	struct solo_dev *solo_dev = solo_enc->solo_dev;
1059 	int err;
1060 
1061 	switch (ctrl->id) {
1062 	case V4L2_CID_BRIGHTNESS:
1063 	case V4L2_CID_CONTRAST:
1064 	case V4L2_CID_SATURATION:
1065 	case V4L2_CID_HUE:
1066 	case V4L2_CID_SHARPNESS:
1067 		return tw28_set_ctrl_val(solo_dev, ctrl->id, solo_enc->ch,
1068 					 ctrl->val);
1069 	case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
1070 		solo_enc->gop = ctrl->val;
1071 		solo_reg_write(solo_dev, SOLO_VE_CH_GOP(solo_enc->ch), solo_enc->gop);
1072 		solo_reg_write(solo_dev, SOLO_VE_CH_GOP_E(solo_enc->ch), solo_enc->gop);
1073 		return 0;
1074 	case V4L2_CID_MPEG_VIDEO_H264_MIN_QP:
1075 		solo_enc->qp = ctrl->val;
1076 		solo_reg_write(solo_dev, SOLO_VE_CH_QP(solo_enc->ch), solo_enc->qp);
1077 		solo_reg_write(solo_dev, SOLO_VE_CH_QP_E(solo_enc->ch), solo_enc->qp);
1078 		return 0;
1079 	case V4L2_CID_DETECT_MD_GLOBAL_THRESHOLD:
1080 		solo_enc->motion_thresh = ctrl->val << 8;
1081 		if (!solo_enc->motion_global || !solo_enc->motion_enabled)
1082 			return 0;
1083 		return solo_set_motion_threshold(solo_dev, solo_enc->ch,
1084 				solo_enc->motion_thresh);
1085 	case V4L2_CID_DETECT_MD_MODE:
1086 		solo_enc->motion_global = ctrl->val == V4L2_DETECT_MD_MODE_GLOBAL;
1087 		solo_enc->motion_enabled = ctrl->val > V4L2_DETECT_MD_MODE_DISABLED;
1088 		if (ctrl->val) {
1089 			if (solo_enc->motion_global)
1090 				err = solo_set_motion_threshold(solo_dev, solo_enc->ch,
1091 					solo_enc->motion_thresh);
1092 			else
1093 				err = solo_set_motion_block(solo_dev, solo_enc->ch,
1094 					solo_enc->md_thresholds->p_cur.p_u16);
1095 			if (err)
1096 				return err;
1097 		}
1098 		solo_motion_toggle(solo_enc, ctrl->val);
1099 		return 0;
1100 	case V4L2_CID_DETECT_MD_THRESHOLD_GRID:
1101 		if (solo_enc->motion_enabled && !solo_enc->motion_global)
1102 			return solo_set_motion_block(solo_dev, solo_enc->ch,
1103 					solo_enc->md_thresholds->p_new.p_u16);
1104 		break;
1105 	case V4L2_CID_OSD_TEXT:
1106 		strscpy(solo_enc->osd_text, ctrl->p_new.p_char,
1107 			sizeof(solo_enc->osd_text));
1108 		return solo_osd_print(solo_enc);
1109 	default:
1110 		return -EINVAL;
1111 	}
1112 
1113 	return 0;
1114 }
1115 
1116 static int solo_subscribe_event(struct v4l2_fh *fh,
1117 				const struct v4l2_event_subscription *sub)
1118 {
1119 
1120 	switch (sub->type) {
1121 	case V4L2_EVENT_MOTION_DET:
1122 		/* Allow for up to 30 events (1 second for NTSC) to be
1123 		 * stored. */
1124 		return v4l2_event_subscribe(fh, sub, 30, NULL);
1125 	default:
1126 		return v4l2_ctrl_subscribe_event(fh, sub);
1127 	}
1128 }
1129 
1130 static const struct v4l2_file_operations solo_enc_fops = {
1131 	.owner			= THIS_MODULE,
1132 	.open			= v4l2_fh_open,
1133 	.release		= vb2_fop_release,
1134 	.read			= vb2_fop_read,
1135 	.poll			= vb2_fop_poll,
1136 	.mmap			= vb2_fop_mmap,
1137 	.unlocked_ioctl		= video_ioctl2,
1138 };
1139 
1140 static const struct v4l2_ioctl_ops solo_enc_ioctl_ops = {
1141 	.vidioc_querycap		= solo_enc_querycap,
1142 	.vidioc_s_std			= solo_enc_s_std,
1143 	.vidioc_g_std			= solo_enc_g_std,
1144 	/* Input callbacks */
1145 	.vidioc_enum_input		= solo_enc_enum_input,
1146 	.vidioc_s_input			= solo_enc_set_input,
1147 	.vidioc_g_input			= solo_enc_get_input,
1148 	/* Video capture format callbacks */
1149 	.vidioc_enum_fmt_vid_cap	= solo_enc_enum_fmt_cap,
1150 	.vidioc_try_fmt_vid_cap		= solo_enc_try_fmt_cap,
1151 	.vidioc_s_fmt_vid_cap		= solo_enc_set_fmt_cap,
1152 	.vidioc_g_fmt_vid_cap		= solo_enc_get_fmt_cap,
1153 	/* Streaming I/O */
1154 	.vidioc_reqbufs			= vb2_ioctl_reqbufs,
1155 	.vidioc_querybuf		= vb2_ioctl_querybuf,
1156 	.vidioc_qbuf			= vb2_ioctl_qbuf,
1157 	.vidioc_dqbuf			= vb2_ioctl_dqbuf,
1158 	.vidioc_streamon		= vb2_ioctl_streamon,
1159 	.vidioc_streamoff		= vb2_ioctl_streamoff,
1160 	/* Frame size and interval */
1161 	.vidioc_enum_framesizes		= solo_enum_framesizes,
1162 	.vidioc_enum_frameintervals	= solo_enum_frameintervals,
1163 	/* Video capture parameters */
1164 	.vidioc_s_parm			= solo_s_parm,
1165 	.vidioc_g_parm			= solo_g_parm,
1166 	/* Logging and events */
1167 	.vidioc_log_status		= v4l2_ctrl_log_status,
1168 	.vidioc_subscribe_event		= solo_subscribe_event,
1169 	.vidioc_unsubscribe_event	= v4l2_event_unsubscribe,
1170 };
1171 
1172 static const struct video_device solo_enc_template = {
1173 	.name			= SOLO6X10_NAME,
1174 	.fops			= &solo_enc_fops,
1175 	.ioctl_ops		= &solo_enc_ioctl_ops,
1176 	.minor			= -1,
1177 	.release		= video_device_release,
1178 	.tvnorms		= V4L2_STD_NTSC_M | V4L2_STD_PAL,
1179 	.device_caps		= V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
1180 				  V4L2_CAP_STREAMING,
1181 };
1182 
1183 static const struct v4l2_ctrl_ops solo_ctrl_ops = {
1184 	.s_ctrl = solo_s_ctrl,
1185 };
1186 
1187 static const struct v4l2_ctrl_config solo_osd_text_ctrl = {
1188 	.ops = &solo_ctrl_ops,
1189 	.id = V4L2_CID_OSD_TEXT,
1190 	.name = "OSD Text",
1191 	.type = V4L2_CTRL_TYPE_STRING,
1192 	.max = OSD_TEXT_MAX,
1193 	.step = 1,
1194 };
1195 
1196 /* Motion Detection Threshold matrix */
1197 static const struct v4l2_ctrl_config solo_md_thresholds = {
1198 	.ops = &solo_ctrl_ops,
1199 	.id = V4L2_CID_DETECT_MD_THRESHOLD_GRID,
1200 	.dims = { SOLO_MOTION_SZ, SOLO_MOTION_SZ },
1201 	.def = SOLO_DEF_MOT_THRESH,
1202 	.max = 65535,
1203 	.step = 1,
1204 };
1205 
1206 static struct solo_enc_dev *solo_enc_alloc(struct solo_dev *solo_dev,
1207 					   u8 ch, unsigned nr)
1208 {
1209 	struct solo_enc_dev *solo_enc;
1210 	struct v4l2_ctrl_handler *hdl;
1211 	int ret;
1212 
1213 	solo_enc = kzalloc(sizeof(*solo_enc), GFP_KERNEL);
1214 	if (!solo_enc)
1215 		return ERR_PTR(-ENOMEM);
1216 
1217 	hdl = &solo_enc->hdl;
1218 	v4l2_ctrl_handler_init(hdl, 10);
1219 	v4l2_ctrl_new_std(hdl, &solo_ctrl_ops,
1220 			V4L2_CID_BRIGHTNESS, 0, 255, 1, 128);
1221 	v4l2_ctrl_new_std(hdl, &solo_ctrl_ops,
1222 			V4L2_CID_CONTRAST, 0, 255, 1, 128);
1223 	v4l2_ctrl_new_std(hdl, &solo_ctrl_ops,
1224 			V4L2_CID_SATURATION, 0, 255, 1, 128);
1225 	v4l2_ctrl_new_std(hdl, &solo_ctrl_ops,
1226 			V4L2_CID_HUE, 0, 255, 1, 128);
1227 	if (tw28_has_sharpness(solo_dev, ch))
1228 		v4l2_ctrl_new_std(hdl, &solo_ctrl_ops,
1229 			V4L2_CID_SHARPNESS, 0, 15, 1, 0);
1230 	v4l2_ctrl_new_std(hdl, &solo_ctrl_ops,
1231 			V4L2_CID_MPEG_VIDEO_GOP_SIZE, 1, 255, 1, solo_dev->fps);
1232 	v4l2_ctrl_new_std(hdl, &solo_ctrl_ops,
1233 			V4L2_CID_MPEG_VIDEO_H264_MIN_QP, 0, 31, 1, SOLO_DEFAULT_QP);
1234 	v4l2_ctrl_new_std_menu(hdl, &solo_ctrl_ops,
1235 			V4L2_CID_DETECT_MD_MODE,
1236 			V4L2_DETECT_MD_MODE_THRESHOLD_GRID, 0,
1237 			V4L2_DETECT_MD_MODE_DISABLED);
1238 	v4l2_ctrl_new_std(hdl, &solo_ctrl_ops,
1239 			V4L2_CID_DETECT_MD_GLOBAL_THRESHOLD, 0, 0xff, 1,
1240 			SOLO_DEF_MOT_THRESH >> 8);
1241 	v4l2_ctrl_new_custom(hdl, &solo_osd_text_ctrl, NULL);
1242 	solo_enc->md_thresholds =
1243 		v4l2_ctrl_new_custom(hdl, &solo_md_thresholds, NULL);
1244 	if (hdl->error) {
1245 		ret = hdl->error;
1246 		goto hdl_free;
1247 	}
1248 
1249 	solo_enc->solo_dev = solo_dev;
1250 	solo_enc->ch = ch;
1251 	mutex_init(&solo_enc->lock);
1252 	spin_lock_init(&solo_enc->av_lock);
1253 	INIT_LIST_HEAD(&solo_enc->vidq_active);
1254 	solo_enc->fmt = (solo_dev->type == SOLO_DEV_6010) ?
1255 		V4L2_PIX_FMT_MPEG4 : V4L2_PIX_FMT_H264;
1256 	solo_enc->type = SOLO_ENC_TYPE_STD;
1257 
1258 	solo_enc->qp = SOLO_DEFAULT_QP;
1259 	solo_enc->gop = solo_dev->fps;
1260 	solo_enc->interval = 1;
1261 	solo_enc->mode = SOLO_ENC_MODE_CIF;
1262 	solo_enc->motion_global = true;
1263 	solo_enc->motion_thresh = SOLO_DEF_MOT_THRESH;
1264 	solo_enc->vidq.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1265 	solo_enc->vidq.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ;
1266 	solo_enc->vidq.ops = &solo_enc_video_qops;
1267 	solo_enc->vidq.mem_ops = &vb2_dma_sg_memops;
1268 	solo_enc->vidq.drv_priv = solo_enc;
1269 	solo_enc->vidq.gfp_flags = __GFP_DMA32 | __GFP_KSWAPD_RECLAIM;
1270 	solo_enc->vidq.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1271 	solo_enc->vidq.buf_struct_size = sizeof(struct solo_vb2_buf);
1272 	solo_enc->vidq.lock = &solo_enc->lock;
1273 	solo_enc->vidq.dev = &solo_dev->pdev->dev;
1274 	ret = vb2_queue_init(&solo_enc->vidq);
1275 	if (ret)
1276 		goto hdl_free;
1277 	solo_update_mode(solo_enc);
1278 
1279 	spin_lock_init(&solo_enc->motion_lock);
1280 
1281 	/* Initialize this per encoder */
1282 	solo_enc->jpeg_len = sizeof(jpeg_header);
1283 	memcpy(solo_enc->jpeg_header, jpeg_header, solo_enc->jpeg_len);
1284 
1285 	solo_enc->desc_nelts = 32;
1286 	solo_enc->desc_items = dma_alloc_coherent(&solo_dev->pdev->dev,
1287 						  sizeof(struct solo_p2m_desc) *
1288 						  solo_enc->desc_nelts,
1289 						  &solo_enc->desc_dma,
1290 						  GFP_KERNEL);
1291 	ret = -ENOMEM;
1292 	if (solo_enc->desc_items == NULL)
1293 		goto hdl_free;
1294 
1295 	solo_enc->vfd = video_device_alloc();
1296 	if (!solo_enc->vfd)
1297 		goto pci_free;
1298 
1299 	*solo_enc->vfd = solo_enc_template;
1300 	solo_enc->vfd->v4l2_dev = &solo_dev->v4l2_dev;
1301 	solo_enc->vfd->ctrl_handler = hdl;
1302 	solo_enc->vfd->queue = &solo_enc->vidq;
1303 	solo_enc->vfd->lock = &solo_enc->lock;
1304 	video_set_drvdata(solo_enc->vfd, solo_enc);
1305 	ret = video_register_device(solo_enc->vfd, VFL_TYPE_VIDEO, nr);
1306 	if (ret < 0)
1307 		goto vdev_release;
1308 
1309 	snprintf(solo_enc->vfd->name, sizeof(solo_enc->vfd->name),
1310 		 "%s-enc (%i/%i)", SOLO6X10_NAME, solo_dev->vfd->num,
1311 		 solo_enc->vfd->num);
1312 
1313 	return solo_enc;
1314 
1315 vdev_release:
1316 	video_device_release(solo_enc->vfd);
1317 pci_free:
1318 	dma_free_coherent(&solo_enc->solo_dev->pdev->dev,
1319 			  sizeof(struct solo_p2m_desc) * solo_enc->desc_nelts,
1320 			  solo_enc->desc_items, solo_enc->desc_dma);
1321 hdl_free:
1322 	v4l2_ctrl_handler_free(hdl);
1323 	kfree(solo_enc);
1324 	return ERR_PTR(ret);
1325 }
1326 
1327 static void solo_enc_free(struct solo_enc_dev *solo_enc)
1328 {
1329 	if (solo_enc == NULL)
1330 		return;
1331 
1332 	dma_free_coherent(&solo_enc->solo_dev->pdev->dev,
1333 			  sizeof(struct solo_p2m_desc) * solo_enc->desc_nelts,
1334 			  solo_enc->desc_items, solo_enc->desc_dma);
1335 	video_unregister_device(solo_enc->vfd);
1336 	v4l2_ctrl_handler_free(&solo_enc->hdl);
1337 	kfree(solo_enc);
1338 }
1339 
1340 int solo_enc_v4l2_init(struct solo_dev *solo_dev, unsigned nr)
1341 {
1342 	int i;
1343 
1344 	init_waitqueue_head(&solo_dev->ring_thread_wait);
1345 
1346 	solo_dev->vh_size = sizeof(vop_header);
1347 	solo_dev->vh_buf = dma_alloc_coherent(&solo_dev->pdev->dev,
1348 					      solo_dev->vh_size,
1349 					      &solo_dev->vh_dma, GFP_KERNEL);
1350 	if (solo_dev->vh_buf == NULL)
1351 		return -ENOMEM;
1352 
1353 	for (i = 0; i < solo_dev->nr_chans; i++) {
1354 		solo_dev->v4l2_enc[i] = solo_enc_alloc(solo_dev, i, nr);
1355 		if (IS_ERR(solo_dev->v4l2_enc[i]))
1356 			break;
1357 	}
1358 
1359 	if (i != solo_dev->nr_chans) {
1360 		int ret = PTR_ERR(solo_dev->v4l2_enc[i]);
1361 
1362 		while (i--)
1363 			solo_enc_free(solo_dev->v4l2_enc[i]);
1364 		dma_free_coherent(&solo_dev->pdev->dev, solo_dev->vh_size,
1365 				  solo_dev->vh_buf, solo_dev->vh_dma);
1366 		solo_dev->vh_buf = NULL;
1367 		return ret;
1368 	}
1369 
1370 	if (solo_dev->type == SOLO_DEV_6010)
1371 		solo_dev->enc_bw_remain = solo_dev->fps * 4 * 4;
1372 	else
1373 		solo_dev->enc_bw_remain = solo_dev->fps * 4 * 5;
1374 
1375 	dev_info(&solo_dev->pdev->dev, "Encoders as /dev/video%d-%d\n",
1376 		 solo_dev->v4l2_enc[0]->vfd->num,
1377 		 solo_dev->v4l2_enc[solo_dev->nr_chans - 1]->vfd->num);
1378 
1379 	return solo_ring_start(solo_dev);
1380 }
1381 
1382 void solo_enc_v4l2_exit(struct solo_dev *solo_dev)
1383 {
1384 	int i;
1385 
1386 	solo_ring_stop(solo_dev);
1387 
1388 	for (i = 0; i < solo_dev->nr_chans; i++)
1389 		solo_enc_free(solo_dev->v4l2_enc[i]);
1390 
1391 	if (solo_dev->vh_buf)
1392 		dma_free_coherent(&solo_dev->pdev->dev, solo_dev->vh_size,
1393 				  solo_dev->vh_buf, solo_dev->vh_dma);
1394 }
1395