/*
* cx18 init/start/stop/exit stream functions
*
* Derived from ivtv-streams.c
*
* Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
*
* 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
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA
*/
#include "cx18-driver.h"
#include "cx18-fileops.h"
#include "cx18-mailbox.h"
#include "cx18-i2c.h"
#include "cx18-queue.h"
#include "cx18-ioctl.h"
#include "cx18-streams.h"
#include "cx18-cards.h"
#include "cx18-scb.h"
#include "cx18-av-core.h"
#include "cx18-dvb.h"
#define CX18_DSP0_INTERRUPT_MASK 0xd0004C
static struct file_operations cx18_v4l2_enc_fops = {
.owner = THIS_MODULE,
.read = cx18_v4l2_read,
.open = cx18_v4l2_open,
.ioctl = cx18_v4l2_ioctl,
.compat_ioctl = v4l_compat_ioctl32,
.release = cx18_v4l2_close,
.poll = cx18_v4l2_enc_poll,
};
/* offset from 0 to register ts v4l2 minors on */
#define CX18_V4L2_ENC_TS_OFFSET 16
/* offset from 0 to register pcm v4l2 minors on */
#define CX18_V4L2_ENC_PCM_OFFSET 24
/* offset from 0 to register yuv v4l2 minors on */
#define CX18_V4L2_ENC_YUV_OFFSET 32
static struct {
const char *name;
int vfl_type;
int minor_offset;
int dma;
enum v4l2_buf_type buf_type;
struct file_operations *fops;
} cx18_stream_info[] = {
{ /* CX18_ENC_STREAM_TYPE_MPG */
"encoder MPEG",
VFL_TYPE_GRABBER, 0,
PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VIDEO_CAPTURE,
&cx18_v4l2_enc_fops
},
{ /* CX18_ENC_STREAM_TYPE_TS */
"TS",
VFL_TYPE_GRABBER, -1,
PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VIDEO_CAPTURE,
&cx18_v4l2_enc_fops
},
{ /* CX18_ENC_STREAM_TYPE_YUV */
"encoder YUV",
VFL_TYPE_GRABBER, CX18_V4L2_ENC_YUV_OFFSET,
PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VIDEO_CAPTURE,
&cx18_v4l2_enc_fops
},
{ /* CX18_ENC_STREAM_TYPE_VBI */
"encoder VBI",
VFL_TYPE_VBI, 0,
PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VBI_CAPTURE,
&cx18_v4l2_enc_fops
},
{ /* CX18_ENC_STREAM_TYPE_PCM */
"encoder PCM audio",
VFL_TYPE_GRABBER, CX18_V4L2_ENC_PCM_OFFSET,
PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_PRIVATE,
&cx18_v4l2_enc_fops
},
{ /* CX18_ENC_STREAM_TYPE_IDX */
"encoder IDX",
VFL_TYPE_GRABBER, -1,
PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VIDEO_CAPTURE,
&cx18_v4l2_enc_fops
},
{ /* CX18_ENC_STREAM_TYPE_RAD */
"encoder radio",
VFL_TYPE_RADIO, 0,
PCI_DMA_NONE, V4L2_BUF_TYPE_PRIVATE,
&cx18_v4l2_enc_fops
},
};
static void cx18_stream_init(struct cx18 *cx, int type)
{
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->v4l2dev = dev;
/* initialize cx18_stream fields */
s->cx = cx;
s->type = type;
s->name = cx18_stream_info[type].name;
s->handle = 0xffffffff;
s->dma = cx18_stream_info[type].dma;
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);
init_waitqueue_head(&s->waitq);
s->id = -1;
cx18_queue_init(&s->q_free);
cx18_queue_init(&s->q_full);
cx18_queue_init(&s->q_io);
}
static int cx18_prep_dev(struct cx18 *cx, int type)
{
struct cx18_stream *s = &cx->streams[type];
u32 cap = cx->v4l2_cap;
int minor_offset = cx18_stream_info[type].minor_offset;
int minor;
/* These four fields are always initialized. If v4l2dev == NULL, then
this stream is not in use. In that case no other fields but these
four can be used. */
s->v4l2dev = NULL;
s->cx = cx;
s->type = type;
s->name = cx18_stream_info[type].name;
/* Check whether the radio is supported */
if (type == CX18_ENC_STREAM_TYPE_RAD && !(cap & V4L2_CAP_RADIO))
return 0;
/* Check whether VBI is supported */
if (type == CX18_ENC_STREAM_TYPE_VBI &&
!(cap & (V4L2_CAP_VBI_CAPTURE | V4L2_CAP_SLICED_VBI_CAPTURE)))
return 0;
/* card number + user defined offset + device offset */
minor = cx->num + cx18_first_minor + minor_offset;
/* 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) {
CX18_INFO("Disabled %s device\n", cx18_stream_info[type].name);
return 0;
}
cx18_stream_init(cx, type);
if (minor_offset == -1)
return 0;
/* allocate and initialize the v4l2 video device structure */
s->v4l2dev = video_device_alloc();
if (s->v4l2dev == NULL) {
CX18_ERR("Couldn't allocate v4l2 video_device for %s\n",
s->name);
return -ENOMEM;
}
s->v4l2dev->type =
VID_TYPE_CAPTURE | VID_TYPE_TUNER | VID_TYPE_TELETEXT |
VID_TYPE_CLIPPING | VID_TYPE_SCALES | VID_TYPE_MPEG_ENCODER;
snprintf(s->v4l2dev->name, sizeof(s->v4l2dev->name), "cx18%d %s",
cx->num, s->name);
s->v4l2dev->minor = minor;
s->v4l2dev->dev = &cx->dev->dev;
s->v4l2dev->fops = cx18_stream_info[type].fops;
s->v4l2dev->release = video_device_release;
return 0;
}
/* Initialize v4l2 variables and register v4l2 devices */
int cx18_streams_setup(struct cx18 *cx)
{
int type;
/* Setup V4L2 Devices */
for (type = 0; type < CX18_MAX_STREAMS; type++) {
/* Prepare device */
if (cx18_prep_dev(cx, type))
break;
/* Allocate Stream */
if (cx18_stream_alloc(&cx->streams[type]))
break;
}
if (type == CX18_MAX_STREAMS)
return 0;
/* One or more streams could not be initialized. Clean 'em all up. */
cx18_streams_cleanup(cx, 0);
return -ENOMEM;
}
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 minor;
/* TODO: Shouldn't this be a VFL_TYPE_TRANSPORT or something?
* We need a VFL_TYPE_TS defined.
*/
if (strcmp("TS", s->name) == 0) {
/* just return if no DVB is supported */
if ((cx->card->hw_all & CX18_HW_DVB) == 0)
return 0;
if (cx18_dvb_register(s) < 0) {
CX18_ERR("DVB failed to register\n");
return -EINVAL;
}
}
if (s->v4l2dev == NULL)
return 0;
minor = s->v4l2dev->minor;
/* Register device. First try the desired minor, then any free one. */
if (video_register_device(s->v4l2dev, vfl_type, minor) &&
video_register_device(s->v4l2dev, vfl_type, -1)) {
CX18_ERR("Couldn't register v4l2 device for %s minor %d\n",
s->name, minor);
video_device_release(s->v4l2dev);
s->v4l2dev = NULL;
return -ENOMEM;
}
minor = s->v4l2dev->minor;
switch (vfl_type) {
case VFL_TYPE_GRABBER:
CX18_INFO("Registered device video%d for %s (%d MB)\n",
minor, s->name, cx->options.megabytes[type]);
break;
case VFL_TYPE_RADIO:
CX18_INFO("Registered device radio%d for %s\n",
minor - MINOR_VFL_TYPE_RADIO_MIN, s->name);
break;
case VFL_TYPE_VBI:
if (cx->options.megabytes[type])
CX18_INFO("Registered device vbi%d for %s (%d MB)\n",
minor - MINOR_VFL_TYPE_VBI_MIN,
s->name, cx->options.megabytes[type]);
else
CX18_INFO("Registered device vbi%d for %s\n",
minor - MINOR_VFL_TYPE_VBI_MIN, s->name);
break;
}
return 0;
}
/* Register v4l2 devices */
int cx18_streams_register(struct cx18 *cx)
{
int type;
int err = 0;
/* Register V4L2 devices */
for (type = 0; type < CX18_MAX_STREAMS; type++)
err |= cx18_reg_dev(cx, type);
if (err == 0)
return 0;
/* One or more streams could not be initialized. Clean 'em all up. */
cx18_streams_cleanup(cx, 1);
return -ENOMEM;
}
/* Unregister v4l2 devices */
void cx18_streams_cleanup(struct cx18 *cx, int unregister)
{
struct video_device *vdev;
int type;
/* Teardown all streams */
for (type = 0; type < CX18_MAX_STREAMS; type++) {
if (cx->streams[type].dvb.enabled)
cx18_dvb_unregister(&cx->streams[type]);
vdev = cx->streams[type].v4l2dev;
cx->streams[type].v4l2dev = NULL;
if (vdev == NULL)
continue;
cx18_stream_free(&cx->streams[type]);
/* Unregister or release device */
if (unregister)
video_unregister_device(vdev);
else
video_device_release(vdev);
}
}
static void cx18_vbi_setup(struct cx18_stream *s)
{
struct cx18 *cx = s->cx;
int raw = cx->vbi.sliced_in->service_set == 0;
u32 data[CX2341X_MBOX_MAX_DATA];
int lines;
if (cx->is_60hz) {
cx->vbi.count = 12;
cx->vbi.start[0] = 10;
cx->vbi.start[1] = 273;
} else { /* PAL/SECAM */
cx->vbi.count = 18;
cx->vbi.start[0] = 6;
cx->vbi.start[1] = 318;
}
/* setup VBI registers */
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 sliced line takes 51 bytes: 4 byte frame header, 4 byte internal
header, 42 data bytes + checksum (to be confirmed) */
if (raw) {
lines = cx->vbi.count * 2;
} else {
lines = cx->is_60hz ? 24 : 38;
if (cx->is_60hz)
lines += 2;
}
cx->vbi.enc_size = lines *
(raw ? cx->vbi.raw_size : cx->vbi.sliced_size);
data[0] = s->handle;
/* Lines per field */
data[1] = (lines / 2) | ((lines / 2) << 16);
/* bytes per line */
data[2] = (raw ? cx->vbi.raw_size : cx->vbi.sliced_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;
} else {
data[4] = 0xB0F0B0F0;
data[5] = 0xA0E0A0E0;
}
CX18_DEBUG_INFO("Setup VBI h: %d lines %x bpl %d fr %d %x %x\n",
data[0], data[1], data[2], data[3], data[4], data[5]);
if (s->type == CX18_ENC_STREAM_TYPE_VBI)
cx18_api(cx, CX18_CPU_SET_RAW_VBI_PARAM, 6, data);
}
int cx18_start_v4l2_encode_stream(struct cx18_stream *s)
{
u32 data[MAX_MB_ARGUMENTS];
struct cx18 *cx = s->cx;
struct list_head *p;
int ts = 0;
int captype = 0;
if (s->v4l2dev == NULL && s->dvb.enabled == 0)
return -EINVAL;
CX18_DEBUG_INFO("Start encoder stream %s\n", s->name);
switch (s->type) {
case CX18_ENC_STREAM_TYPE_MPG:
captype = CAPTURE_CHANNEL_TYPE_MPEG;
cx->mpg_data_received = cx->vbi_data_inserted = 0;
cx->dualwatch_jiffies = jiffies;
cx->dualwatch_stereo_mode = cx->params.audio_properties & 0x300;
cx->search_pack_header = 0;
break;
case CX18_ENC_STREAM_TYPE_TS:
captype = CAPTURE_CHANNEL_TYPE_TS;
ts = 1;
break;
case CX18_ENC_STREAM_TYPE_YUV:
captype = CAPTURE_CHANNEL_TYPE_YUV;
break;
case CX18_ENC_STREAM_TYPE_PCM:
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;
cx->vbi.frame = 0;
cx->vbi.inserted_frame = 0;
memset(cx->vbi.sliced_mpeg_size,
0, sizeof(cx->vbi.sliced_mpeg_size));
break;
default:
return -EINVAL;
}
s->buffers_stolen = 0;
/* mute/unmute video */
cx18_vapi(cx, CX18_CPU_SET_VIDEO_MUTE, 2,
s->handle, !!test_bit(CX18_F_I_RADIO_USER, &cx->i_flags));
/* Clear Streamoff flags in case left from last capture */
clear_bit(CX18_F_S_STREAMOFF, &s->s_flags);
cx18_vapi_result(cx, data, CX18_CREATE_TASK, 1, CPU_CMD_MASK_CAPTURE);
s->handle = data[0];
cx18_vapi(cx, CX18_CPU_SET_CHANNEL_TYPE, 2, s->handle, captype);
if (atomic_read(&cx->ana_capturing) == 0 && !ts) {
/* 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(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 8, 0);
cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 4, 1);
cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 2, s->handle, 12);
cx18_vapi(cx, CX18_CPU_SET_CAPTURE_LINE_NO, 3,
s->handle, cx->digitizer, cx->digitizer);
/* Setup VBI */
if (cx->v4l2_cap & V4L2_CAP_VBI_CAPTURE)
cx18_vbi_setup(s);
/* assign program index info.
Mask 7: select I/P/B, Num_req: 400 max */
cx18_vapi_result(cx, data, CX18_CPU_SET_INDEXTABLE, 1, 0);
/* Setup API for Stream */
cx2341x_update(cx, cx18_api_func, NULL, &cx->params);
}
if (atomic_read(&cx->tot_capturing) == 0) {
clear_bit(CX18_F_I_EOS, &cx->i_flags);
write_reg(7, CX18_DSP0_INTERRUPT_MASK);
}
cx18_vapi(cx, CX18_CPU_DE_SET_MDL_ACK, 3, s->handle,
(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);
writel(buf->dma_handle, &cx->scb->cpu_mdl[buf->id].paddr);
writel(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);
}
/* begin_capture */
if (cx18_vapi(cx, CX18_CPU_CAPTURE_START, 1, s->handle)) {
CX18_DEBUG_WARN("Error starting capture!\n");
cx18_vapi(cx, CX18_DESTROY_TASK, 1, s->handle);
return -EINVAL;
}
/* you're live! sit back and await interrupts :) */
if (!ts)
atomic_inc(&cx->ana_capturing);
atomic_inc(&cx->tot_capturing);
return 0;
}
void cx18_stop_all_captures(struct cx18 *cx)
{
int i;
for (i = CX18_MAX_STREAMS - 1; i >= 0; i--) {
struct cx18_stream *s = &cx->streams[i];
if (s->v4l2dev == NULL && s->dvb.enabled == 0)
continue;
if (test_bit(CX18_F_S_STREAMING, &s->s_flags))
cx18_stop_v4l2_encode_stream(s, 0);
}
}
int cx18_stop_v4l2_encode_stream(struct cx18_stream *s, int gop_end)
{
struct cx18 *cx = s->cx;
unsigned long then;
if (s->v4l2dev == NULL && s->dvb.enabled == 0)
return -EINVAL;
/* This function assumes that you are allowed to stop the capture
and that we are actually capturing */
CX18_DEBUG_INFO("Stop Capture\n");
if (atomic_read(&cx->tot_capturing) == 0)
return 0;
if (s->type == CX18_ENC_STREAM_TYPE_MPG)
cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 2, s->handle, !gop_end);
else
cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 1, s->handle);
then = jiffies;
if (s->type == CX18_ENC_STREAM_TYPE_MPG && gop_end) {
CX18_INFO("ignoring gop_end: not (yet?) supported by the firmware\n");
}
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);
cx18_vapi(cx, CX18_DESTROY_TASK, 1, s->handle);
s->handle = 0xffffffff;
if (atomic_read(&cx->tot_capturing) > 0)
return 0;
write_reg(5, CX18_DSP0_INTERRUPT_MASK);
wake_up(&s->waitq);
return 0;
}
u32 cx18_find_handle(struct cx18 *cx)
{
int i;
/* find first available handle to be used for global settings */
for (i = 0; i < CX18_MAX_STREAMS; i++) {
struct cx18_stream *s = &cx->streams[i];
if (s->v4l2dev && s->handle)
return s->handle;
}
return 0;
}
