* Derived from ivtv-streams.c
*
* Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
+ * Copyright (C) 2008 Andy Walls <awalls@radix.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
{
struct cx18_stream *s = &cx->streams[type];
struct video_device *dev = s->v4l2dev;
- u32 max_size = cx->options.megabytes[type] * 1024 * 1024;
/* we need to keep v4l2dev, so restore it afterwards */
memset(s, 0, sizeof(*s));
s->handle = CX18_INVALID_TASK_HANDLE;
s->dma = cx18_stream_info[type].dma;
+ s->buffers = cx->stream_buffers[type];
s->buf_size = cx->stream_buf_size[type];
- if (s->buf_size)
- s->buffers = max_size / s->buf_size;
- if (s->buffers > 63) {
- /* Each stream has a maximum of 63 buffers,
- ensure we do not exceed that. */
- s->buffers = 63;
- s->buf_size = (max_size / s->buffers) & ~0xfff;
- }
- spin_lock_init(&s->qlock);
+
+ mutex_init(&s->qlock);
init_waitqueue_head(&s->waitq);
s->id = -1;
cx18_queue_init(&s->q_free);
+ cx18_queue_init(&s->q_busy);
cx18_queue_init(&s->q_full);
- cx18_queue_init(&s->q_io);
}
static int cx18_prep_dev(struct cx18 *cx, int type)
/* User explicitly selected 0 buffers for these streams, so don't
create them. */
if (cx18_stream_info[type].dma != PCI_DMA_NONE &&
- cx->options.megabytes[type] == 0) {
+ cx->stream_buffers[type] == 0) {
CX18_INFO("Disabled %s device\n", cx18_stream_info[type].name);
return 0;
}
/* Initialize v4l2 variables and register v4l2 devices */
int cx18_streams_setup(struct cx18 *cx)
{
- int type;
+ int type, ret;
/* Setup V4L2 Devices */
for (type = 0; type < CX18_MAX_STREAMS; type++) {
/* Prepare device */
- if (cx18_prep_dev(cx, type))
+ ret = cx18_prep_dev(cx, type);
+ if (ret < 0)
break;
/* Allocate Stream */
- if (cx18_stream_alloc(&cx->streams[type]))
+ ret = cx18_stream_alloc(&cx->streams[type]);
+ if (ret < 0)
break;
}
if (type == CX18_MAX_STREAMS)
/* One or more streams could not be initialized. Clean 'em all up. */
cx18_streams_cleanup(cx, 0);
- return -ENOMEM;
+ return ret;
}
static int cx18_reg_dev(struct cx18 *cx, int type)
{
struct cx18_stream *s = &cx->streams[type];
int vfl_type = cx18_stream_info[type].vfl_type;
- int num;
+ int num, ret;
/* TODO: Shouldn't this be a VFL_TYPE_TRANSPORT or something?
* We need a VFL_TYPE_TS defined.
/* just return if no DVB is supported */
if ((cx->card->hw_all & CX18_HW_DVB) == 0)
return 0;
- if (cx18_dvb_register(s) < 0) {
+ ret = cx18_dvb_register(s);
+ if (ret < 0) {
CX18_ERR("DVB failed to register\n");
- return -EINVAL;
+ return ret;
}
}
}
/* Register device. First try the desired minor, then any free one. */
- if (video_register_device(s->v4l2dev, vfl_type, num)) {
+ ret = video_register_device(s->v4l2dev, vfl_type, num);
+ if (ret < 0) {
CX18_ERR("Couldn't register v4l2 device for %s kernel number %d\n",
s->name, num);
video_device_release(s->v4l2dev);
s->v4l2dev = NULL;
- return -ENOMEM;
+ return ret;
}
num = s->v4l2dev->num;
switch (vfl_type) {
case VFL_TYPE_GRABBER:
- CX18_INFO("Registered device video%d for %s (%d MB)\n",
- num, s->name, cx->options.megabytes[type]);
+ CX18_INFO("Registered device video%d for %s (%d x %d kB)\n",
+ num, s->name, cx->stream_buffers[type],
+ cx->stream_buf_size[type]/1024);
break;
case VFL_TYPE_RADIO:
break;
case VFL_TYPE_VBI:
- if (cx->options.megabytes[type])
- CX18_INFO("Registered device vbi%d for %s (%d MB)\n",
- num,
- s->name, cx->options.megabytes[type]);
+ if (cx->stream_buffers[type])
+ CX18_INFO("Registered device vbi%d for %s "
+ "(%d x %d bytes)\n",
+ num, s->name, cx->stream_buffers[type],
+ cx->stream_buf_size[type]);
else
CX18_INFO("Registered device vbi%d for %s\n",
num, s->name);
int cx18_streams_register(struct cx18 *cx)
{
int type;
- int err = 0;
+ int err;
+ int ret = 0;
/* Register V4L2 devices */
- for (type = 0; type < CX18_MAX_STREAMS; type++)
- err |= cx18_reg_dev(cx, type);
+ for (type = 0; type < CX18_MAX_STREAMS; type++) {
+ err = cx18_reg_dev(cx, type);
+ if (err && ret == 0)
+ ret = err;
+ }
- if (err == 0)
+ if (ret == 0)
return 0;
/* One or more streams could not be initialized. Clean 'em all up. */
cx18_streams_cleanup(cx, 1);
- return -ENOMEM;
+ return ret;
}
/* Unregister v4l2 devices */
static void cx18_vbi_setup(struct cx18_stream *s)
{
struct cx18 *cx = s->cx;
- int raw = cx->vbi.sliced_in->service_set == 0;
+ int raw = cx18_raw_vbi(cx);
u32 data[CX2341X_MBOX_MAX_DATA];
int lines;
cx18_av_cmd(cx, VIDIOC_S_FMT, &cx->vbi.in);
/* determine number of lines and total number of VBI bytes.
- A raw line takes 1443 bytes: 2 * 720 + 4 byte frame header - 1
- The '- 1' byte is probably an unused U or V byte. Or something...
+ A raw line takes 1444 bytes: 4 byte SAV code + 2 * 720
A sliced line takes 51 bytes: 4 byte frame header, 4 byte internal
header, 42 data bytes + checksum (to be confirmed) */
if (raw) {
/* Lines per field */
data[1] = (lines / 2) | ((lines / 2) << 16);
/* bytes per line */
- data[2] = (raw ? cx->vbi.raw_size : cx->vbi.sliced_size);
+ data[2] = (raw ? cx->vbi.raw_decoder_line_size
+ : cx->vbi.sliced_decoder_line_size);
/* Every X number of frames a VBI interrupt arrives
(frames as in 25 or 30 fps) */
data[3] = 1;
/* Setup VBI for the cx25840 digitizer */
if (raw) {
data[4] = 0x20602060;
- data[5] = 0x30703070;
+ data[5] = 0x307090d0;
} else {
data[4] = 0xB0F0B0F0;
data[5] = 0xA0E0A0E0;
cx18_api(cx, CX18_CPU_SET_RAW_VBI_PARAM, 6, data);
}
+struct cx18_queue *cx18_stream_put_buf_fw(struct cx18_stream *s,
+ struct cx18_buffer *buf)
+{
+ struct cx18 *cx = s->cx;
+ struct cx18_queue *q;
+
+ /* Don't give it to the firmware, if we're not running a capture */
+ if (s->handle == CX18_INVALID_TASK_HANDLE ||
+ !test_bit(CX18_F_S_STREAMING, &s->s_flags))
+ return cx18_enqueue(s, buf, &s->q_free);
+
+ q = cx18_enqueue(s, buf, &s->q_busy);
+ if (q != &s->q_busy)
+ return q; /* The firmware has the max buffers it can handle */
+
+ cx18_buf_sync_for_device(s, buf);
+ cx18_vapi(cx, CX18_CPU_DE_SET_MDL, 5, s->handle,
+ (void __iomem *) &cx->scb->cpu_mdl[buf->id] - cx->enc_mem,
+ 1, buf->id, s->buf_size);
+ return q;
+}
+
+void cx18_stream_load_fw_queue(struct cx18_stream *s)
+{
+ struct cx18_queue *q;
+ struct cx18_buffer *buf;
+
+ if (atomic_read(&s->q_free.buffers) == 0 ||
+ atomic_read(&s->q_busy.buffers) >= CX18_MAX_FW_MDLS_PER_STREAM)
+ return;
+
+ /* Move from q_free to q_busy notifying the firmware, until the limit */
+ do {
+ buf = cx18_dequeue(s, &s->q_free);
+ if (buf == NULL)
+ break;
+ q = cx18_stream_put_buf_fw(s, buf);
+ } while (atomic_read(&s->q_busy.buffers) < CX18_MAX_FW_MDLS_PER_STREAM
+ && q == &s->q_busy);
+}
+
int cx18_start_v4l2_encode_stream(struct cx18_stream *s)
{
u32 data[MAX_MB_ARGUMENTS];
struct cx18 *cx = s->cx;
- struct list_head *p;
+ struct cx18_buffer *buf;
int ts = 0;
int captype = 0;
captype = CAPTURE_CHANNEL_TYPE_PCM;
break;
case CX18_ENC_STREAM_TYPE_VBI:
- captype = cx->vbi.sliced_in->service_set ?
- CAPTURE_CHANNEL_TYPE_SLICED_VBI : CAPTURE_CHANNEL_TYPE_VBI;
+ captype = cx18_raw_vbi(cx) ?
+ CAPTURE_CHANNEL_TYPE_VBI : CAPTURE_CHANNEL_TYPE_SLICED_VBI;
cx->vbi.frame = 0;
cx->vbi.inserted_frame = 0;
memset(cx->vbi.sliced_mpeg_size,
cx18_vapi(cx, CX18_CPU_SET_CHANNEL_TYPE, 2, s->handle, captype);
if (atomic_read(&cx->ana_capturing) == 0 && !ts) {
+ struct cx18_api_func_private priv;
+
/* Stuff from Windows, we don't know what it is */
cx18_vapi(cx, CX18_CPU_SET_VER_CROP_LINE, 2, s->handle, 0);
cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 3, 1);
cx18_vapi_result(cx, data, CX18_CPU_SET_INDEXTABLE, 1, 0);
/* Setup API for Stream */
- cx2341x_update(cx, cx18_api_func, NULL, &cx->params);
+ priv.cx = cx;
+ priv.s = s;
+ cx2341x_update(&priv, cx18_api_func, NULL, &cx->params);
}
if (atomic_read(&cx->tot_capturing) == 0) {
(void __iomem *)&cx->scb->cpu_mdl_ack[s->type][0] - cx->enc_mem,
(void __iomem *)&cx->scb->cpu_mdl_ack[s->type][1] - cx->enc_mem);
- list_for_each(p, &s->q_free.list) {
- struct cx18_buffer *buf = list_entry(p, struct cx18_buffer, list);
-
+ /* Init all the cpu_mdls for this stream */
+ cx18_flush_queues(s);
+ mutex_lock(&s->qlock);
+ list_for_each_entry(buf, &s->q_free.list, list) {
cx18_writel(cx, buf->dma_handle,
&cx->scb->cpu_mdl[buf->id].paddr);
cx18_writel(cx, s->buf_size, &cx->scb->cpu_mdl[buf->id].length);
- cx18_vapi(cx, CX18_CPU_DE_SET_MDL, 5, s->handle,
- (void __iomem *)&cx->scb->cpu_mdl[buf->id] - cx->enc_mem,
- 1, buf->id, s->buf_size);
}
+ mutex_unlock(&s->qlock);
+ cx18_stream_load_fw_queue(s);
+
/* begin_capture */
if (cx18_vapi(cx, CX18_CPU_CAPTURE_START, 1, s->handle)) {
CX18_DEBUG_WARN("Error starting capture!\n");
cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 2, s->handle, 1);
else
cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 1, s->handle);
+ clear_bit(CX18_F_S_STREAMING, &s->s_flags);
+ /* FIXME - CX18_F_S_STREAMOFF as well? */
cx18_vapi(cx, CX18_CPU_DE_RELEASE_MDL, 1, s->handle);
cx18_vapi(cx, CX18_DESTROY_TASK, 1, s->handle);
- /* FIXME - clean-up DSP0_INT mask, i_flags, s_flags, etc. */
+ s->handle = CX18_INVALID_TASK_HANDLE;
+ if (atomic_read(&cx->tot_capturing) == 0) {
+ set_bit(CX18_F_I_EOS, &cx->i_flags);
+ cx18_write_reg(cx, 5, CX18_DSP0_INTERRUPT_MASK);
+ }
return -EINVAL;
}
CX18_INFO("ignoring gop_end: not (yet?) supported by the firmware\n");
}
- /* Tell the CX23418 it can't use our buffers anymore */
- cx18_vapi(cx, CX18_CPU_DE_RELEASE_MDL, 1, s->handle);
-
if (s->type != CX18_ENC_STREAM_TYPE_TS)
atomic_dec(&cx->ana_capturing);
atomic_dec(&cx->tot_capturing);
/* Clear capture and no-read bits */
clear_bit(CX18_F_S_STREAMING, &s->s_flags);
+ /* Tell the CX23418 it can't use our buffers anymore */
+ cx18_vapi(cx, CX18_CPU_DE_RELEASE_MDL, 1, s->handle);
+
cx18_vapi(cx, CX18_DESTROY_TASK, 1, s->handle);
s->handle = CX18_INVALID_TASK_HANDLE;
}
return CX18_INVALID_TASK_HANDLE;
}
+
+struct cx18_stream *cx18_handle_to_stream(struct cx18 *cx, u32 handle)
+{
+ int i;
+ struct cx18_stream *s;
+
+ if (handle == CX18_INVALID_TASK_HANDLE)
+ return NULL;
+
+ for (i = 0; i < CX18_MAX_STREAMS; i++) {
+ s = &cx->streams[i];
+ if (s->handle != handle)
+ continue;
+ if (s->v4l2dev || s->dvb.enabled)
+ return s;
+ }
+ return NULL;
+}