1 // SPDX-License-Identifier: GPL-2.0-or-later
4     Copyright (C) 2003-2004  Kevin Thayer <nufan_wfk at yahoo.com>
6     Copyright (C) 2005-2007  Hans Verkuil <hverkuil@xs4all.nl>
10 #include "ivtv-driver.h"
11 #include "ivtv-fileops.h"
12 #include "ivtv-i2c.h"
13 #include "ivtv-queue.h"
14 #include "ivtv-udma.h"
15 #include "ivtv-irq.h"
16 #include "ivtv-vbi.h"
17 #include "ivtv-mailbox.h"
18 #include "ivtv-routing.h"
19 #include "ivtv-streams.h"
20 #include "ivtv-yuv.h"
21 #include "ivtv-ioctl.h"
22 #include "ivtv-cards.h"
23 #include "ivtv-firmware.h"
25 #include <media/v4l2-event.h>
31    Possible error returns: -EBUSY if someone else has claimed
35 	struct ivtv *itv = id->itv;  in ivtv_claim_stream()
36 	struct ivtv_stream *s = &itv->streams[type];  in ivtv_claim_stream()
40 	if (test_and_set_bit(IVTV_F_S_CLAIMED, &s->s_flags)) {  in ivtv_claim_stream()
42 		if (s->fh == &id->fh) {  in ivtv_claim_stream()
46 		if (s->fh == NULL && (type == IVTV_DEC_STREAM_TYPE_VBI ||  in ivtv_claim_stream()
51 			s->fh = &id->fh;  in ivtv_claim_stream()
57 		return -EBUSY;  in ivtv_claim_stream()
59 	s->fh = &id->fh;  in ivtv_claim_stream()
72 		   itv->vbi.insert_mpeg && !ivtv_raw_vbi(itv)) {  in ivtv_claim_stream()
77 	s_vbi = &itv->streams[vbi_type];  in ivtv_claim_stream()
79 	if (!test_and_set_bit(IVTV_F_S_CLAIMED, &s_vbi->s_flags)) {  in ivtv_claim_stream()
85 	set_bit(IVTV_F_S_INTERNAL_USE, &s_vbi->s_flags);  in ivtv_claim_stream()
94 	struct ivtv *itv = s->itv;  in ivtv_release_stream()
97 	s->fh = NULL;  in ivtv_release_stream()
98 	if ((s->type == IVTV_DEC_STREAM_TYPE_VBI || s->type == IVTV_ENC_STREAM_TYPE_VBI) &&  in ivtv_release_stream()
99 		test_bit(IVTV_F_S_INTERNAL_USE, &s->s_flags)) {  in ivtv_release_stream()
103 	if (!test_and_clear_bit(IVTV_F_S_CLAIMED, &s->s_flags)) {  in ivtv_release_stream()
104 		IVTV_DEBUG_WARN("Release stream %s not in use!\n", s->name);  in ivtv_release_stream()
111 	if (s->type == IVTV_DEC_STREAM_TYPE_VBI)  in ivtv_release_stream()
117 	if (s->type == IVTV_DEC_STREAM_TYPE_MPG)  in ivtv_release_stream()
118 		s_vbi = &itv->streams[IVTV_DEC_STREAM_TYPE_VBI];  in ivtv_release_stream()
119 	else if (s->type == IVTV_ENC_STREAM_TYPE_MPG)  in ivtv_release_stream()
120 		s_vbi = &itv->streams[IVTV_ENC_STREAM_TYPE_VBI];  in ivtv_release_stream()
125 	if (!test_and_clear_bit(IVTV_F_S_INTERNAL_USE, &s_vbi->s_flags)) {  in ivtv_release_stream()
129 	if (s_vbi->fh) {  in ivtv_release_stream()
134 	if (s_vbi->type == IVTV_DEC_STREAM_TYPE_VBI)  in ivtv_release_stream()
136 	clear_bit(IVTV_F_S_CLAIMED, &s_vbi->s_flags);  in ivtv_release_stream()
145 	const u32 dual = 0x02;  in ivtv_dualwatch()  local
147 	new_stereo_mode = v4l2_ctrl_g_ctrl(itv->cxhdl.audio_mode);  in ivtv_dualwatch()
151 		new_stereo_mode = dual;  in ivtv_dualwatch()
153 	if (new_stereo_mode == itv->dualwatch_stereo_mode)  in ivtv_dualwatch()
157 			   itv->dualwatch_stereo_mode, new_stereo_mode);  in ivtv_dualwatch()
158 	if (v4l2_ctrl_s_ctrl(itv->cxhdl.audio_mode, new_stereo_mode))  in ivtv_dualwatch()
164 	u32 wr_idx = (read_enc(itv->pgm_info_offset) - itv->pgm_info_offset - 4) / 24;  in ivtv_update_pgm_info()
168 	if (wr_idx >= itv->pgm_info_num) {  in ivtv_update_pgm_info()
169 		IVTV_DEBUG_WARN("Invalid PGM index %d (>= %d)\n", wr_idx, itv->pgm_info_num);  in ivtv_update_pgm_info()
172 	cnt = (wr_idx + itv->pgm_info_num - itv->pgm_info_write_idx) % itv->pgm_info_num;  in ivtv_update_pgm_info()
174 		int idx = (itv->pgm_info_write_idx + i) % itv->pgm_info_num;  in ivtv_update_pgm_info()
175 		struct v4l2_enc_idx_entry *e = itv->pgm_info + idx;  in ivtv_update_pgm_info()
176 		u32 addr = itv->pgm_info_offset + 4 + idx * 24;  in ivtv_update_pgm_info()
177 		const int mapping[8] = { -1, V4L2_ENC_IDX_FRAME_I, V4L2_ENC_IDX_FRAME_P, -1,  in ivtv_update_pgm_info()
178 			V4L2_ENC_IDX_FRAME_B, -1, -1, -1 };  in ivtv_update_pgm_info()
181 		e->offset = read_enc(addr + 4) + ((u64)read_enc(addr + 8) << 32);  in ivtv_update_pgm_info()
182 		if (e->offset > itv->mpg_data_received) {  in ivtv_update_pgm_info()
185 		e->offset += itv->vbi_data_inserted;  in ivtv_update_pgm_info()
186 		e->length = read_enc(addr);  in ivtv_update_pgm_info()
187 		e->pts = read_enc(addr + 16) + ((u64)(read_enc(addr + 20) & 1) << 32);  in ivtv_update_pgm_info()
188 		e->flags = mapping[read_enc(addr + 12) & 7];  in ivtv_update_pgm_info()
191 	itv->pgm_info_write_idx = (itv->pgm_info_write_idx + i) % itv->pgm_info_num;  in ivtv_update_pgm_info()
196 	struct ivtv *itv = s->itv;  in ivtv_schedule()
199 	lockdep_assert_held(&itv->serialize_lock);  in ivtv_schedule()
201 	mutex_unlock(&itv->serialize_lock);  in ivtv_schedule()
202 	prepare_to_wait(&s->waitq, &wait, TASK_INTERRUPTIBLE);  in ivtv_schedule()
204 	if (!s->q_free.buffers)  in ivtv_schedule()
206 	finish_wait(&s->waitq, &wait);  in ivtv_schedule()
207 	mutex_lock(&itv->serialize_lock);  in ivtv_schedule()
212 	struct ivtv *itv = s->itv;  in ivtv_get_buffer()
213 	struct ivtv_stream *s_vbi = &itv->streams[IVTV_ENC_STREAM_TYPE_VBI];  in ivtv_get_buffer()
218 		if (s->type == IVTV_ENC_STREAM_TYPE_MPG) {  in ivtv_get_buffer()
223 				       itv->dualwatch_jiffies +  in ivtv_get_buffer()
225 				itv->dualwatch_jiffies = jiffies;  in ivtv_get_buffer()
229 			if (test_bit(IVTV_F_S_INTERNAL_USE, &s_vbi->s_flags) &&  in ivtv_get_buffer()
230 			    !test_bit(IVTV_F_S_APPL_IO, &s_vbi->s_flags)) {  in ivtv_get_buffer()
231 				while ((buf = ivtv_dequeue(s_vbi, &s_vbi->q_full))) {  in ivtv_get_buffer()
233 					ivtv_process_vbi_data(itv, buf, s_vbi->dma_pts, s_vbi->type);  in ivtv_get_buffer()
234 					ivtv_enqueue(s_vbi, buf, &s_vbi->q_free);  in ivtv_get_buffer()
237 			buf = &itv->vbi.sliced_mpeg_buf;  in ivtv_get_buffer()
238 			if (buf->readpos != buf->bytesused) {  in ivtv_get_buffer()
244 		buf = ivtv_dequeue(s, &s->q_io);  in ivtv_get_buffer()
249 		buf = ivtv_dequeue(s, &s->q_full);  in ivtv_get_buffer()
251 			if ((buf->b_flags & IVTV_F_B_NEED_BUF_SWAP) == 0)  in ivtv_get_buffer()
253 			buf->b_flags &= ~IVTV_F_B_NEED_BUF_SWAP;  in ivtv_get_buffer()
254 			if (s->type == IVTV_ENC_STREAM_TYPE_MPG)  in ivtv_get_buffer()
257 			else if (s->type != IVTV_DEC_STREAM_TYPE_VBI) {  in ivtv_get_buffer()
259 				ivtv_process_vbi_data(itv, buf, s->dma_pts, s->type);  in ivtv_get_buffer()
265 		if (s->type != IVTV_DEC_STREAM_TYPE_VBI && !test_bit(IVTV_F_S_STREAMING, &s->s_flags)) {  in ivtv_get_buffer()
266 			IVTV_DEBUG_INFO("EOS %s\n", s->name);  in ivtv_get_buffer()
272 			*err = -EAGAIN;  in ivtv_get_buffer()
280 			IVTV_DEBUG_INFO("User stopped %s\n", s->name);  in ivtv_get_buffer()
281 			*err = -EINTR;  in ivtv_get_buffer()
289 	int idx = itv->vbi.inserted_frame % IVTV_VBI_FRAMES;  in ivtv_setup_sliced_vbi_buf()
291 	itv->vbi.sliced_mpeg_buf.buf = itv->vbi.sliced_mpeg_data[idx];  in ivtv_setup_sliced_vbi_buf()
292 	itv->vbi.sliced_mpeg_buf.bytesused = itv->vbi.sliced_mpeg_size[idx];  in ivtv_setup_sliced_vbi_buf()
293 	itv->vbi.sliced_mpeg_buf.readpos = 0;  in ivtv_setup_sliced_vbi_buf()
299 	struct ivtv *itv = s->itv;  in ivtv_copy_buf_to_user()
300 	size_t len = buf->bytesused - buf->readpos;  in ivtv_copy_buf_to_user()
303 	if (itv->vbi.insert_mpeg && s->type == IVTV_ENC_STREAM_TYPE_MPG &&  in ivtv_copy_buf_to_user()
304 	    !ivtv_raw_vbi(itv) && buf != &itv->vbi.sliced_mpeg_buf) {  in ivtv_copy_buf_to_user()
305 		const char *start = buf->buf + buf->readpos;  in ivtv_copy_buf_to_user()
308 		u8 ch = itv->search_pack_header ? 0xba : 0xe0;  in ivtv_copy_buf_to_user()
311 		while (start + len > p && (q = memchr(p, 0, start + len - p))) {  in ivtv_copy_buf_to_user()
313 			if ((char *)q + 15 >= buf->buf + buf->bytesused ||  in ivtv_copy_buf_to_user()
317 			if (!itv->search_pack_header) {  in ivtv_copy_buf_to_user()
323 					itv->search_pack_header = 1;  in ivtv_copy_buf_to_user()
336 				itv->search_pack_header = 0;  in ivtv_copy_buf_to_user()
337 				len = (char *)q - start;  in ivtv_copy_buf_to_user()
343 	if (copy_to_user(ubuf, (u8 *)buf->buf + buf->readpos, len)) {  in ivtv_copy_buf_to_user()
344 		IVTV_DEBUG_WARN("copy %zd bytes to user failed for %s\n", len, s->name);  in ivtv_copy_buf_to_user()
345 		return -EFAULT;  in ivtv_copy_buf_to_user()
347 	/*IVTV_INFO("copied %lld %d %d %d %d %d vbi %d\n", itv->mpg_data_received, len, ucount,  in ivtv_copy_buf_to_user()
348 			buf->readpos, buf->bytesused, buf->bytesused - buf->readpos - len,  in ivtv_copy_buf_to_user()
349 			buf == &itv->vbi.sliced_mpeg_buf); */  in ivtv_copy_buf_to_user()
350 	buf->readpos += len;  in ivtv_copy_buf_to_user()
351 	if (s->type == IVTV_ENC_STREAM_TYPE_MPG && buf != &itv->vbi.sliced_mpeg_buf)  in ivtv_copy_buf_to_user()
352 		itv->mpg_data_received += len;  in ivtv_copy_buf_to_user()
358 	struct ivtv *itv = s->itv;  in ivtv_read()
362 	if (atomic_read(&itv->capturing) == 0 && s->fh == NULL) {  in ivtv_read()
364 		IVTV_DEBUG_WARN("Stream %s not initialized before read\n", s->name);  in ivtv_read()
365 		return -EIO;  in ivtv_read()
369 	   arrive one-by-one, so make sure we never output more than one VBI frame at a time */  in ivtv_read()
370 	if (s->type == IVTV_DEC_STREAM_TYPE_VBI ||  in ivtv_read()
371 	    (s->type == IVTV_ENC_STREAM_TYPE_VBI && !ivtv_raw_vbi(itv)))  in ivtv_read()
386 				clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);  in ivtv_read()
387 				clear_bit(IVTV_F_S_APPL_IO, &s->s_flags);  in ivtv_read()
393 		rc = ivtv_copy_buf_to_user(s, buf, ubuf + tot_written, tot_count - tot_written);  in ivtv_read()
394 		if (buf != &itv->vbi.sliced_mpeg_buf) {  in ivtv_read()
395 			ivtv_enqueue(s, buf, (buf->readpos == buf->bytesused) ? &s->q_free : &s->q_io);  in ivtv_read()
397 		else if (buf->readpos == buf->bytesused) {  in ivtv_read()
398 			int idx = itv->vbi.inserted_frame % IVTV_VBI_FRAMES;  in ivtv_read()
399 			itv->vbi.sliced_mpeg_size[idx] = 0;  in ivtv_read()
400 			itv->vbi.inserted_frame++;  in ivtv_read()
401 			itv->vbi_data_inserted += buf->bytesused;  in ivtv_read()
417 	struct ivtv *itv = s->itv;  in ivtv_read_pos()
419 	IVTV_DEBUG_HI_FILE("read %zd from %s, got %zd\n", count, s->name, rc);  in ivtv_read_pos()
427 	struct ivtv *itv = id->itv;  in ivtv_start_capture()
428 	struct ivtv_stream *s = &itv->streams[id->type];  in ivtv_start_capture()
431 	if (s->type == IVTV_ENC_STREAM_TYPE_RAD ||  in ivtv_start_capture()
432 	    s->type == IVTV_DEC_STREAM_TYPE_MPG ||  in ivtv_start_capture()
433 	    s->type == IVTV_DEC_STREAM_TYPE_YUV ||  in ivtv_start_capture()
434 	    s->type == IVTV_DEC_STREAM_TYPE_VOUT) {  in ivtv_start_capture()
436 		return -EINVAL;  in ivtv_start_capture()
440 	if (ivtv_claim_stream(id, s->type))  in ivtv_start_capture()
441 		return -EBUSY;  in ivtv_start_capture()
444 	if (s->type == IVTV_DEC_STREAM_TYPE_VBI) {  in ivtv_start_capture()
445 		set_bit(IVTV_F_S_APPL_IO, &s->s_flags);  in ivtv_start_capture()
451 …if (test_bit(IVTV_F_S_STREAMOFF, &s->s_flags) || test_and_set_bit(IVTV_F_S_STREAMING, &s->s_flags)…  in ivtv_start_capture()
452 		set_bit(IVTV_F_S_APPL_IO, &s->s_flags);  in ivtv_start_capture()
457 	s_vbi = &itv->streams[IVTV_ENC_STREAM_TYPE_VBI];  in ivtv_start_capture()
458 	if (s->type == IVTV_ENC_STREAM_TYPE_MPG &&  in ivtv_start_capture()
459 	    test_bit(IVTV_F_S_INTERNAL_USE, &s_vbi->s_flags) &&  in ivtv_start_capture()
460 	    !test_and_set_bit(IVTV_F_S_STREAMING, &s_vbi->s_flags)) {  in ivtv_start_capture()
468 			clear_bit(IVTV_F_S_STREAMING, &s_vbi->s_flags);  in ivtv_start_capture()
469 			clear_bit(IVTV_F_S_STREAMING, &s->s_flags);  in ivtv_start_capture()
472 			return -EIO;  in ivtv_start_capture()
480 		set_bit(IVTV_F_S_APPL_IO, &s->s_flags);  in ivtv_start_capture()
482 		if (test_and_clear_bit(IVTV_F_I_ENC_PAUSED, &itv->i_flags))  in ivtv_start_capture()
488 	IVTV_DEBUG_WARN("Failed to start capturing for stream %s\n", s->name);  in ivtv_start_capture()
493 	if (s->type == IVTV_ENC_STREAM_TYPE_MPG &&  in ivtv_start_capture()
494 	    test_bit(IVTV_F_S_STREAMING, &s_vbi->s_flags)) {  in ivtv_start_capture()
496 		clear_bit(IVTV_F_S_STREAMING, &s_vbi->s_flags);  in ivtv_start_capture()
498 	clear_bit(IVTV_F_S_STREAMING, &s->s_flags);  in ivtv_start_capture()
500 	return -EIO;  in ivtv_start_capture()
505 	struct ivtv_open_id *id = fh2id(filp->private_data);  in ivtv_v4l2_read()
506 	struct ivtv *itv = id->itv;  in ivtv_v4l2_read()
507 	struct ivtv_stream *s = &itv->streams[id->type];  in ivtv_v4l2_read()
510 	IVTV_DEBUG_HI_FILE("read %zd bytes from %s\n", count, s->name);  in ivtv_v4l2_read()
512 	if (mutex_lock_interruptible(&itv->serialize_lock))  in ivtv_v4l2_read()
513 		return -ERESTARTSYS;  in ivtv_v4l2_read()
516 		rc = ivtv_read_pos(s, buf, count, pos, filp->f_flags & O_NONBLOCK);  in ivtv_v4l2_read()
517 	mutex_unlock(&itv->serialize_lock);  in ivtv_v4l2_read()
523 	struct ivtv *itv = id->itv;  in ivtv_start_decoding()
524 	struct ivtv_stream *s = &itv->streams[id->type];  in ivtv_start_decoding()
527 	if (atomic_read(&itv->decoding) == 0) {  in ivtv_start_decoding()
528 		if (ivtv_claim_stream(id, s->type)) {  in ivtv_start_decoding()
531 			return -EBUSY;  in ivtv_start_decoding()
535 			if (rc == -EAGAIN)  in ivtv_start_decoding()
541 	if (s->type == IVTV_DEC_STREAM_TYPE_MPG)  in ivtv_start_decoding()
548 	struct ivtv *itv = s->itv;  in ivtv_schedule_dma()
552 	lockdep_assert_held(&itv->serialize_lock);  in ivtv_schedule_dma()
554 	mutex_unlock(&itv->serialize_lock);  in ivtv_schedule_dma()
555 	prepare_to_wait(&itv->dma_waitq, &wait, TASK_INTERRUPTIBLE);  in ivtv_schedule_dma()
557 	       test_bit(IVTV_F_S_DMA_PENDING, &s->s_flags))  in ivtv_schedule_dma()
559 	finish_wait(&itv->dma_waitq, &wait);  in ivtv_schedule_dma()
560 	mutex_lock(&itv->serialize_lock);  in ivtv_schedule_dma()
567 	struct ivtv_open_id *id = fh2id(filp->private_data);  in ivtv_write()
568 	struct ivtv *itv = id->itv;  in ivtv_write()
569 	struct ivtv_stream *s = &itv->streams[id->type];  in ivtv_write()
570 	struct yuv_playback_info *yi = &itv->yuv_info;  in ivtv_write()
577 	IVTV_DEBUG_HI_FILE("write %zd bytes to %s\n", count, s->name);  in ivtv_write()
579 	if (s->type != IVTV_DEC_STREAM_TYPE_MPG &&  in ivtv_write()
580 	    s->type != IVTV_DEC_STREAM_TYPE_YUV &&  in ivtv_write()
581 	    s->type != IVTV_DEC_STREAM_TYPE_VOUT)  in ivtv_write()
583 		return -EINVAL;  in ivtv_write()
586 	if (ivtv_claim_stream(id, s->type))  in ivtv_write()
587 		return -EBUSY;  in ivtv_write()
590 	if (s->type == IVTV_DEC_STREAM_TYPE_VOUT) {  in ivtv_write()
593 		set_bit(IVTV_F_S_APPL_IO, &s->s_flags);  in ivtv_write()
598 	mode = s->type == IVTV_DEC_STREAM_TYPE_MPG ? OUT_MPG : OUT_YUV;  in ivtv_write()
602 	    return -EBUSY;  in ivtv_write()
605 	set_bit(IVTV_F_S_APPL_IO, &s->s_flags);  in ivtv_write()
608 	rc = ivtv_start_decoding(id, itv->speed);  in ivtv_write()
610 		IVTV_DEBUG_WARN("Failed start decode stream %s\n", s->name);  in ivtv_write()
613 		clear_bit(IVTV_F_S_STREAMING, &s->s_flags);  in ivtv_write()
614 		clear_bit(IVTV_F_S_APPL_IO, &s->s_flags);  in ivtv_write()
619 	/* If possible, just DMA the entire frame - Check the data transfer size  in ivtv_write()
620 	since we may get here before the stream has been fully set-up */  in ivtv_write()
621 	if (mode == OUT_YUV && s->q_full.length == 0 && itv->dma_data_req_size) {  in ivtv_write()
622 		while (count >= itv->dma_data_req_size) {  in ivtv_write()
628 			bytes_written += itv->dma_data_req_size;  in ivtv_write()
629 			user_buf += itv->dma_data_req_size;  in ivtv_write()
630 			count -= itv->dma_data_req_size;  in ivtv_write()
633 			IVTV_DEBUG_HI_FILE("Wrote %d bytes to %s (%d)\n", bytes_written, s->name, s->q_full.bytesused);  in ivtv_write()
640 		while (q.length - q.bytesused < count && (buf = ivtv_dequeue(s, &s->q_io)))  in ivtv_write()
642 		while (q.length - q.bytesused < count && (buf = ivtv_dequeue(s, &s->q_free))) {  in ivtv_write()
647 		if (filp->f_flags & O_NONBLOCK)  in ivtv_write()
648 			return -EAGAIN;  in ivtv_write()
651 			IVTV_DEBUG_INFO("User stopped %s\n", s->name);  in ivtv_write()
652 			return -EINTR;  in ivtv_write()
660 		if (s->type == IVTV_DEC_STREAM_TYPE_YUV &&  in ivtv_write()
661 		    yi->stream_size + count > itv->dma_data_req_size)  in ivtv_write()
663 				itv->dma_data_req_size - yi->stream_size);  in ivtv_write()
669 			ivtv_queue_move(s, &q, NULL, &s->q_free, 0);  in ivtv_write()
673 		count -= rc;  in ivtv_write()
676 		if (s->type == IVTV_DEC_STREAM_TYPE_YUV) {  in ivtv_write()
677 			yi->stream_size += rc;  in ivtv_write()
679 			if (yi->stream_size == itv->dma_data_req_size) {  in ivtv_write()
680 				ivtv_enqueue(s, buf, &s->q_full);  in ivtv_write()
681 				yi->stream_size = 0;  in ivtv_write()
686 		if (buf->bytesused != s->buf_size) {  in ivtv_write()
688 			ivtv_enqueue(s, buf, &s->q_io);  in ivtv_write()
692 		if (s->type == IVTV_DEC_STREAM_TYPE_MPG)  in ivtv_write()
694 		ivtv_enqueue(s, buf, &s->q_full);  in ivtv_write()
697 	if (test_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags)) {  in ivtv_write()
698 		if (s->q_full.length >= itv->dma_data_req_size) {  in ivtv_write()
703 				IVTV_DEBUG_INFO("User interrupted %s\n", s->name);  in ivtv_write()
704 				return -EINTR;  in ivtv_write()
707 			clear_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags);  in ivtv_write()
708 			ivtv_queue_move(s, &s->q_full, NULL, &s->q_predma, itv->dma_data_req_size);  in ivtv_write()
709 			ivtv_dma_stream_dec_prepare(s, itv->dma_data_req_offset + IVTV_DECODER_OFFSET, 1);  in ivtv_write()
714 	if (count && !(filp->f_flags & O_NONBLOCK))  in ivtv_write()
716 	IVTV_DEBUG_HI_FILE("Wrote %d bytes to %s (%d)\n", bytes_written, s->name, s->q_full.bytesused);  in ivtv_write()
722 	struct ivtv_open_id *id = fh2id(filp->private_data);  in ivtv_v4l2_write()
723 	struct ivtv *itv = id->itv;  in ivtv_v4l2_write()
726 	if (mutex_lock_interruptible(&itv->serialize_lock))  in ivtv_v4l2_write()
727 		return -ERESTARTSYS;  in ivtv_v4l2_write()
729 	mutex_unlock(&itv->serialize_lock);  in ivtv_v4l2_write()
735 	struct ivtv_open_id *id = fh2id(filp->private_data);  in ivtv_v4l2_dec_poll()
736 	struct ivtv *itv = id->itv;  in ivtv_v4l2_dec_poll()
737 	struct ivtv_stream *s = &itv->streams[id->type];  in ivtv_v4l2_dec_poll()
745 	if (!list_empty(&id->fh.subscribed)) {  in ivtv_v4l2_dec_poll()
746 		poll_wait(filp, &id->fh.wait, wait);  in ivtv_v4l2_dec_poll()
747 		/* Turn off the old-style vsync events */  in ivtv_v4l2_dec_poll()
748 		clear_bit(IVTV_F_I_EV_VSYNC_ENABLED, &itv->i_flags);  in ivtv_v4l2_dec_poll()
749 		if (v4l2_event_pending(&id->fh))  in ivtv_v4l2_dec_poll()
752 		/* This is the old-style API which is here only for backwards  in ivtv_v4l2_dec_poll()
754 		poll_wait(filp, &s->waitq, wait);  in ivtv_v4l2_dec_poll()
755 		set_bit(IVTV_F_I_EV_VSYNC_ENABLED, &itv->i_flags);  in ivtv_v4l2_dec_poll()
756 		if (test_bit(IVTV_F_I_EV_VSYNC, &itv->i_flags) ||  in ivtv_v4l2_dec_poll()
757 		    test_bit(IVTV_F_I_EV_DEC_STOPPED, &itv->i_flags))  in ivtv_v4l2_dec_poll()
762 	if (s->q_free.buffers)  in ivtv_v4l2_dec_poll()
770 	struct ivtv_open_id *id = fh2id(filp->private_data);  in ivtv_v4l2_enc_poll()
771 	struct ivtv *itv = id->itv;  in ivtv_v4l2_enc_poll()
772 	struct ivtv_stream *s = &itv->streams[id->type];  in ivtv_v4l2_enc_poll()
773 	int eof = test_bit(IVTV_F_S_STREAMOFF, &s->s_flags);  in ivtv_v4l2_enc_poll()
777 	if (!eof && !test_bit(IVTV_F_S_STREAMING, &s->s_flags) &&  in ivtv_v4l2_enc_poll()
778 			s->type != IVTV_ENC_STREAM_TYPE_RAD &&  in ivtv_v4l2_enc_poll()
782 		mutex_lock(&itv->serialize_lock);  in ivtv_v4l2_enc_poll()
784 		mutex_unlock(&itv->serialize_lock);  in ivtv_v4l2_enc_poll()
787 					s->name, rc);  in ivtv_v4l2_enc_poll()
795 	poll_wait(filp, &s->waitq, wait);  in ivtv_v4l2_enc_poll()
796 	if (v4l2_event_pending(&id->fh))  in ivtv_v4l2_enc_poll()
799 		poll_wait(filp, &id->fh.wait, wait);  in ivtv_v4l2_enc_poll()
801 	if (s->q_full.length || s->q_io.length)  in ivtv_v4l2_enc_poll()
810 	struct ivtv *itv = id->itv;  in ivtv_stop_capture()
811 	struct ivtv_stream *s = &itv->streams[id->type];  in ivtv_stop_capture()
813 	IVTV_DEBUG_FILE("close() of %s\n", s->name);  in ivtv_stop_capture()
818 	if (test_bit(IVTV_F_S_STREAMING, &s->s_flags)) {  in ivtv_stop_capture()
819 		struct ivtv_stream *s_vbi = &itv->streams[IVTV_ENC_STREAM_TYPE_VBI];  in ivtv_stop_capture()
824 		if (id->type == IVTV_ENC_STREAM_TYPE_MPG &&  in ivtv_stop_capture()
825 		    test_bit(IVTV_F_S_STREAMING, &s_vbi->s_flags) &&  in ivtv_stop_capture()
826 		    !test_bit(IVTV_F_S_APPL_IO, &s_vbi->s_flags)) {  in ivtv_stop_capture()
830 		if ((id->type == IVTV_DEC_STREAM_TYPE_VBI ||  in ivtv_stop_capture()
831 		     id->type == IVTV_ENC_STREAM_TYPE_VBI) &&  in ivtv_stop_capture()
832 		    test_bit(IVTV_F_S_INTERNAL_USE, &s->s_flags)) {  in ivtv_stop_capture()
834 			s->fh = NULL;  in ivtv_stop_capture()
841 		clear_bit(IVTV_F_S_APPL_IO, &s->s_flags);  in ivtv_stop_capture()
842 		clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);  in ivtv_stop_capture()
849 	struct ivtv *itv = id->itv;  in ivtv_stop_decoding()
850 	struct ivtv_stream *s = &itv->streams[id->type];  in ivtv_stop_decoding()
852 	IVTV_DEBUG_FILE("close() of %s\n", s->name);  in ivtv_stop_decoding()
854 	if (id->type == IVTV_DEC_STREAM_TYPE_YUV &&  in ivtv_stop_decoding()
855 		test_bit(IVTV_F_I_DECODING_YUV, &itv->i_flags)) {  in ivtv_stop_decoding()
861 	if (test_bit(IVTV_F_S_STREAMING, &s->s_flags)) {  in ivtv_stop_decoding()
865 		itv->output_mode = OUT_NONE;  in ivtv_stop_decoding()
867 	clear_bit(IVTV_F_S_APPL_IO, &s->s_flags);  in ivtv_stop_decoding()
868 	clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);  in ivtv_stop_decoding()
870 	if (itv->output_mode == OUT_UDMA_YUV && id->yuv_frames)  in ivtv_stop_decoding()
871 		itv->output_mode = OUT_NONE;  in ivtv_stop_decoding()
873 	itv->speed = 0;  in ivtv_stop_decoding()
874 	clear_bit(IVTV_F_I_DEC_PAUSED, &itv->i_flags);  in ivtv_stop_decoding()
880 	struct v4l2_fh *fh = filp->private_data;  in ivtv_v4l2_close()
882 	struct ivtv *itv = id->itv;  in ivtv_v4l2_close()
883 	struct ivtv_stream *s = &itv->streams[id->type];  in ivtv_v4l2_close()
885 	IVTV_DEBUG_FILE("close %s\n", s->name);  in ivtv_v4l2_close()
887 	mutex_lock(&itv->serialize_lock);  in ivtv_v4l2_close()
889 	/* Stop radio */  in ivtv_v4l2_close()
890 	if (id->type == IVTV_ENC_STREAM_TYPE_RAD &&  in ivtv_v4l2_close()
892 		/* Closing radio device, return to TV mode */  in ivtv_v4l2_close()
894 		/* Mark that the radio is no longer in use */  in ivtv_v4l2_close()
895 		clear_bit(IVTV_F_I_RADIO_USER, &itv->i_flags);  in ivtv_v4l2_close()
897 		ivtv_call_all(itv, video, s_std, itv->std);  in ivtv_v4l2_close()
900 		if (itv->hw_flags & IVTV_HW_SAA711X) {  in ivtv_v4l2_close()
904 		if (atomic_read(&itv->capturing) > 0) {  in ivtv_v4l2_close()
907 					v4l2_ctrl_g_ctrl(itv->cxhdl.video_mute) |  in ivtv_v4l2_close()
908 					(v4l2_ctrl_g_ctrl(itv->cxhdl.video_mute_yuv) << 8));  in ivtv_v4l2_close()
918 	if (s->fh != &id->fh)  in ivtv_v4l2_close()
923 	if (s->type >= IVTV_DEC_STREAM_TYPE_MPG) {  in ivtv_v4l2_close()
924 		struct ivtv_stream *s_vout = &itv->streams[IVTV_DEC_STREAM_TYPE_VOUT];  in ivtv_v4l2_close()
929 		   IVTV_DEC_STREAM_TYPE_VOUT open, then disable CC on TV-out. */  in ivtv_v4l2_close()
930 		if (itv->output_mode == OUT_NONE && !test_bit(IVTV_F_S_APPL_IO, &s_vout->s_flags)) {  in ivtv_v4l2_close()
931 			/* disable CC on TV-out */  in ivtv_v4l2_close()
939 	mutex_unlock(&itv->serialize_lock);  in ivtv_v4l2_close()
947 	struct ivtv *itv = s->itv;
951 	IVTV_DEBUG_FILE("open %s\n", s->name);
956 		return -ENXIO;
970 		if (res == -EAGAIN)
973 			return -EIO;
976 	if (s->type == IVTV_DEC_STREAM_TYPE_MPG &&
977 		test_bit(IVTV_F_S_CLAIMED, &itv->streams[IVTV_DEC_STREAM_TYPE_YUV].s_flags))
978 		return -EBUSY;
980 	if (s->type == IVTV_DEC_STREAM_TYPE_YUV &&
981 		test_bit(IVTV_F_S_CLAIMED, &itv->streams[IVTV_DEC_STREAM_TYPE_MPG].s_flags))
982 		return -EBUSY;
984 	if (s->type == IVTV_DEC_STREAM_TYPE_YUV) {
987 			/* return -ENODEV; */
996 		return -ENOMEM;
998 	v4l2_fh_init(&item->fh, &s->vdev);
999 	item->itv = itv;
1000 	item->type = s->type;
1002 	filp->private_data = &item->fh;
1003 	v4l2_fh_add(&item->fh);
1005 	if (item->type == IVTV_ENC_STREAM_TYPE_RAD &&
1007 		if (!test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags)) {
1008 			if (atomic_read(&itv->capturing) > 0) {
1009 				/* switching to radio while capture is
1011 				v4l2_fh_del(&item->fh);
1012 				v4l2_fh_exit(&item->fh);
1014 				return -EBUSY;
1017 		/* Mark that the radio is being used. */
1018 		set_bit(IVTV_F_I_RADIO_USER, &itv->i_flags);
1019 		/* We have the radio */
1021 		/* Switch tuner to radio */
1023 		/* Select the correct audio input (i.e. radio tuner) */
1025 		if (itv->hw_flags & IVTV_HW_SAA711X) {
1034 	if (s->type == IVTV_DEC_STREAM_TYPE_MPG) {
1035 		clear_bit(IVTV_F_I_DEC_YUV, &itv->i_flags);
1036 	} else if (s->type == IVTV_DEC_STREAM_TYPE_YUV) {
1037 		set_bit(IVTV_F_I_DEC_YUV, &itv->i_flags);
1039 		itv->dma_data_req_size =
1040 				1080 * ((itv->yuv_info.v4l2_src_h + 31) & ~31);
1041 		itv->yuv_info.stream_size = 0;
1051 	if (mutex_lock_interruptible(vdev->lock))
1052 		return -ERESTARTSYS;
1054 	mutex_unlock(vdev->lock);
1060 	if (atomic_read(&itv->capturing))
1067 	if (atomic_read(&itv->capturing)) {