// SPDX-License-Identifier: GPL-2.0-or-later
/*
* cx18 init/start/stop/exit stream functions
*
* Derived from ivtv-streams.c
*
* Copyright (C) 2007 Hans Verkuil <[email protected]>
* Copyright (C) 2008 Andy Walls <[email protected]>
*/
#include "cx18-driver.h"
#include "cx18-io.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-dvb.h"
#define CX18_DSP0_INTERRUPT_MASK 0xd0004C
static const struct v4l2_file_operations cx18_v4l2_enc_fops = {
.owner = THIS_MODULE,
.read = cx18_v4l2_read,
.open = cx18_v4l2_open,
.unlocked_ioctl = video_ioctl2,
.release = cx18_v4l2_close,
.poll = cx18_v4l2_enc_poll,
};
static const struct v4l2_file_operations cx18_v4l2_enc_yuv_fops = {
.owner = THIS_MODULE,
.open = cx18_v4l2_open,
.unlocked_ioctl = video_ioctl2,
.release = cx18_v4l2_close,
.poll = vb2_fop_poll,
.read = vb2_fop_read,
.mmap = vb2_fop_mmap,
};
/* 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 num_offset;
int dma;
u32 caps;
} cx18_stream_info[] = {
{ /* CX18_ENC_STREAM_TYPE_MPG */
"encoder MPEG",
VFL_TYPE_VIDEO, 0,
DMA_FROM_DEVICE,
V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
V4L2_CAP_AUDIO | V4L2_CAP_TUNER
},
{ /* CX18_ENC_STREAM_TYPE_TS */
"TS",
VFL_TYPE_VIDEO, -1,
DMA_FROM_DEVICE,
},
{ /* CX18_ENC_STREAM_TYPE_YUV */
"encoder YUV",
VFL_TYPE_VIDEO, CX18_V4L2_ENC_YUV_OFFSET,
DMA_FROM_DEVICE,
V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
V4L2_CAP_STREAMING | V4L2_CAP_AUDIO | V4L2_CAP_TUNER
},
{ /* CX18_ENC_STREAM_TYPE_VBI */
"encoder VBI",
VFL_TYPE_VBI, 0,
DMA_FROM_DEVICE,
V4L2_CAP_VBI_CAPTURE | V4L2_CAP_SLICED_VBI_CAPTURE |
V4L2_CAP_READWRITE | V4L2_CAP_AUDIO | V4L2_CAP_TUNER
},
{ /* CX18_ENC_STREAM_TYPE_PCM */
"encoder PCM audio",
VFL_TYPE_VIDEO, CX18_V4L2_ENC_PCM_OFFSET,
DMA_FROM_DEVICE,
V4L2_CAP_TUNER | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE,
},
{ /* CX18_ENC_STREAM_TYPE_IDX */
"encoder IDX",
VFL_TYPE_VIDEO, -1,
DMA_FROM_DEVICE,
},
{ /* CX18_ENC_STREAM_TYPE_RAD */
"encoder radio",
VFL_TYPE_RADIO, 0,
DMA_NONE,
V4L2_CAP_RADIO | V4L2_CAP_TUNER
},
};
static int cx18_queue_setup(struct vb2_queue *vq,
unsigned int *nbuffers, unsigned int *nplanes,
unsigned int sizes[], struct device *alloc_devs[])
{
unsigned int q_num_bufs = vb2_get_num_buffers(vq);
struct cx18_stream *s = vb2_get_drv_priv(vq);
struct cx18 *cx = s->cx;
unsigned int szimage;
/*
* HM12 YUV size is (Y=(h*720) + UV=(h*(720/2)))
* UYUV YUV size is (Y=(h*720) + UV=(h*(720)))
*/
if (s->pixelformat == V4L2_PIX_FMT_NV12_16L16)
szimage = cx->cxhdl.height * 720 * 3 / 2;
else
szimage = cx->cxhdl.height * 720 * 2;
/*
* Let's request at least three buffers: two for the
* DMA engine and one for userspace.
*/
if (q_num_bufs + *nbuffers < 3)
*nbuffers = 3 - q_num_bufs;
if (*nplanes) {
if (*nplanes != 1 || sizes[0] < szimage)
return -EINVAL;
return 0;
}
sizes[0] = szimage;
*nplanes = 1;
return 0;
}
static void cx18_buf_queue(struct vb2_buffer *vb)
{
struct cx18_stream *s = vb2_get_drv_priv(vb->vb2_queue);
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
struct cx18_vb2_buffer *buf =
container_of(vbuf, struct cx18_vb2_buffer, vb);
unsigned long flags;
spin_lock_irqsave(&s->vb_lock, flags);
list_add_tail(&buf->list, &s->vb_capture);
spin_unlock_irqrestore(&s->vb_lock, flags);
}
static int cx18_buf_prepare(struct vb2_buffer *vb)
{
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
struct cx18_stream *s = vb2_get_drv_priv(vb->vb2_queue);
struct cx18 *cx = s->cx;
unsigned int size;
/*
* HM12 YUV size is (Y=(h*720) + UV=(h*(720/2)))
* UYUV YUV size is (Y=(h*720) + UV=(h*(720)))
*/
if (s->pixelformat == V4L2_PIX_FMT_NV12_16L16)
size = cx->cxhdl.height * 720 * 3 / 2;
else
size = cx->cxhdl.height * 720 * 2;
if (vb2_plane_size(vb, 0) < size)
return -EINVAL;
vb2_set_plane_payload(vb, 0, size);
vbuf->field = V4L2_FIELD_INTERLACED;
return 0;
}
void cx18_clear_queue(struct cx18_stream *s, enum vb2_buffer_state state)
{
while (!list_empty(&s->vb_capture)) {
struct cx18_vb2_buffer *buf;
buf = list_first_entry(&s->vb_capture,
struct cx18_vb2_buffer, list);
list_del(&buf->list);
vb2_buffer_done(&buf->vb.vb2_buf, state);
}
}
static int cx18_start_streaming(struct vb2_queue *vq, unsigned int count)
{
struct v4l2_fh *owner = vq->owner;
struct cx18_stream *s = vb2_get_drv_priv(vq);
unsigned long flags;
int rc;
if (WARN_ON(!owner)) {
rc = -EIO;
goto clear_queue;
}
s->sequence = 0;
rc = cx18_start_capture(fh2id(owner));
if (!rc) {
/* Establish a buffer timeout */
mod_timer(&s->vb_timeout, msecs_to_jiffies(2000) + jiffies);
return 0;
}
clear_queue:
spin_lock_irqsave(&s->vb_lock, flags);
cx18_clear_queue(s, VB2_BUF_STATE_QUEUED);
spin_unlock_irqrestore(&s->vb_lock, flags);
return rc;
}
static void cx18_stop_streaming(struct vb2_queue *vq)
{
struct cx18_stream *s = vb2_get_drv_priv(vq);
unsigned long flags;
cx18_stop_capture(s, 0);
timer_delete_sync(&s->vb_timeout);
spin_lock_irqsave(&s->vb_lock, flags);
cx18_clear_queue(s, VB2_BUF_STATE_ERROR);
spin_unlock_irqrestore(&s->vb_lock, flags);
}
static const struct vb2_ops cx18_vb2_qops = {
.queue_setup = cx18_queue_setup,
.buf_queue = cx18_buf_queue,
.buf_prepare = cx18_buf_prepare,
.start_streaming = cx18_start_streaming,
.stop_streaming = cx18_stop_streaming,
.wait_prepare = vb2_ops_wait_prepare,
.wait_finish = vb2_ops_wait_finish,
};
static int cx18_stream_init(struct cx18 *cx, int type)
{
struct cx18_stream *s = &cx->streams[type];
int err = 0;
memset(s, 0, sizeof(*s));
/* initialize cx18_stream fields */
s->dvb = NULL;
s->cx = cx;
s->type = type;
s->name = cx18_stream_info[type].name;
s->handle = CX18_INVALID_TASK_HANDLE;
s->dma = cx18_stream_info[type].dma;
s->v4l2_dev_caps = cx18_stream_info[type].caps;
s->buffers = cx->stream_buffers[type];
s->buf_size = cx->stream_buf_size[type];
INIT_LIST_HEAD(&s->buf_pool);
s->bufs_per_mdl = 1;
s->mdl_size = s->buf_size * s->bufs_per_mdl;
init_waitqueue_head(&s->waitq);
s->id = -1;
spin_lock_init(&s->q_free.lock);
cx18_queue_init(&s->q_free);
spin_lock_init(&s->q_busy.lock);
cx18_queue_init(&s->q_busy);
spin_lock_init(&s->q_full.lock);
cx18_queue_init(&s->q_full);
spin_lock_init(&s->q_idle.lock);
cx18_queue_init(&s->q_idle);
INIT_WORK(&s->out_work_order, cx18_out_work_handler);
INIT_LIST_HEAD(&s->vb_capture);
timer_setup(&s->vb_timeout, cx18_vb_timeout, 0);
spin_lock_init(&s->vb_lock);
if (type == CX18_ENC_STREAM_TYPE_YUV) {
s->vb_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
/* Assume the previous pixel default */
s->pixelformat = V4L2_PIX_FMT_NV12_16L16;
s->vb_bytes_per_frame = cx->cxhdl.height * 720 * 3 / 2;
s->vb_bytes_per_line = 720;
s->vidq.io_modes = VB2_READ | VB2_MMAP | VB2_DMABUF;
s->vidq.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
s->vidq.drv_priv = s;
s->vidq.buf_struct_size = sizeof(struct cx18_vb2_buffer);
s->vidq.ops = &cx18_vb2_qops;
s->vidq.mem_ops = &vb2_vmalloc_memops;
s->vidq.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
s->vidq.min_queued_buffers = 2;
s->vidq.gfp_flags = GFP_DMA32;
s->vidq.dev = &cx->pci_dev->dev;
s->vidq.lock = &cx->serialize_lock;
err = vb2_queue_init(&s->vidq);
if (err)
v4l2_err(&cx->v4l2_dev, "cannot init vb2 queue\n");
s->video_dev.queue = &s->vidq;
}
return err;
}
static int cx18_prep_dev(struct cx18 *cx, int type)
{
struct cx18_stream *s = &cx->streams[type];
u32 cap = cx->v4l2_cap;
int num_offset = cx18_stream_info[type].num_offset;
int num = cx->instance + cx18_first_minor + num_offset;
int err;
/*
* These five fields are always initialized.
* For analog capture related streams, if video_dev.v4l2_dev == NULL then the
* stream is not in use.
* For the TS stream, if dvb == NULL then the stream is not in use.
* In those cases no other fields but these four can be used.
*/
s->video_dev.v4l2_dev = NULL;
s->dvb = 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;
/* User explicitly selected 0 buffers for these streams, so don't
create them. */
if (cx18_stream_info[type].dma != DMA_NONE &&
cx->stream_buffers[type] == 0) {
CX18_INFO("Disabled %s device\n", cx18_stream_info[type].name);
return 0;
}
err = cx18_stream_init(cx, type);
if (err)
return err;
/* Allocate the cx18_dvb struct only for the TS on cards with DTV */
if (type == CX18_ENC_STREAM_TYPE_TS) {
if (cx->card->hw_all & CX18_HW_DVB) {
s->dvb = kzalloc(sizeof(struct cx18_dvb), GFP_KERNEL);
if (s->dvb == NULL) {
CX18_ERR("Couldn't allocate cx18_dvb structure for %s\n",
s->name);
return -ENOMEM;
}
} else {
/* Don't need buffers for the TS, if there is no DVB */
s->buffers = 0;
}
}
if (num_offset == -1)
return 0;
/* initialize the v4l2 video device structure */
snprintf(s->video_dev.name, sizeof(s->video_dev.name), "%s %s",
cx->v4l2_dev.name, s->name);
s->video_dev.num = num;
s->video_dev.v4l2_dev = &cx->v4l2_dev;
if (type == CX18_ENC_STREAM_TYPE_YUV)
s->video_dev.fops = &cx18_v4l2_enc_yuv_fops;
else
s->video_dev.fops = &cx18_v4l2_enc_fops;
s->video_dev.release = video_device_release_empty;
if (cx->card->video_inputs->video_type == CX18_CARD_INPUT_VID_TUNER)
s->video_dev.tvnorms = cx->tuner_std;
else
s->video_dev.tvnorms = V4L2_STD_ALL;
s->video_dev.lock = &cx->serialize_lock;
cx18_set_funcs(&s->video_dev);
return 0;
}
/* Initialize v4l2 variables and register v4l2 devices */
int cx18_streams_setup(struct cx18 *cx)
{
int type, ret;
/* Setup V4L2 Devices */
for (type = 0; type < CX18_MAX_STREAMS; type++) {
/* Prepare device */
ret = cx18_prep_dev(cx, type);
if (ret < 0)
break;
/* Allocate Stream */
ret = cx18_stream_alloc(&cx->streams[type]);
if (ret < 0)
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 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;
const char *name;
int num, ret;
if (type == CX18_ENC_STREAM_TYPE_TS && s->dvb != NULL) {
ret = cx18_dvb_register(s);
if (ret < 0) {
CX18_ERR("DVB failed to register\n");
return ret;
}
}
if (s->video_dev.v4l2_dev == NULL)
return 0;
num = s->video_dev.num;
s->video_dev.device_caps = s->v4l2_dev_caps; /* device capabilities */
/* card number + user defined offset + device offset */
if (type != CX18_ENC_STREAM_TYPE_MPG) {
struct cx18_stream *s_mpg = &cx->streams[CX18_ENC_STREAM_TYPE_MPG];
if (s_mpg->video_dev.v4l2_dev)
num = s_mpg->video_dev.num
+ cx18_stream_info[type].num_offset;
}
video_set_drvdata(&s->video_dev, s);
/* Register device. First try the desired minor, then any free one. */
ret = video_register_device_no_warn(&s->video_dev, vfl_type, num);
if (ret < 0) {
CX18_ERR("Couldn't register v4l2 device for %s (device node number %d)\n",
s->name, num);
s->video_dev.v4l2_dev = NULL;
return ret;
}
name = video_device_node_name(&s->video_dev);
switch (vfl_type) {
case VFL_TYPE_VIDEO:
CX18_INFO("Registered device %s for %s (%d x %d.%02d kB)\n",
name, s->name, cx->stream_buffers[type],
cx->stream_buf_size[type] / 1024,
(cx->stream_buf_size[type] * 100 / 1024) % 100);
break;
case VFL_TYPE_RADIO:
CX18_INFO("Registered device %s for %s\n", name, s->name);
break;
case VFL_TYPE_VBI:
if (cx->stream_buffers[type])
CX18_INFO("Registered device %s for %s (%d x %d bytes)\n",
name, s->name, cx->stream_buffers[type],
cx->stream_buf_size[type]);
else
CX18_INFO("Registered device %s for %s\n",
name, s->name);
break;
}
return 0;
}
/* Register v4l2 devices */
int cx18_streams_register(struct cx18 *cx)
{
int type;
int err;
int ret = 0;
/* Register V4L2 devices */
for (type = 0; type < CX18_MAX_STREAMS; type++) {
err = cx18_reg_dev(cx, type);
if (err && ret == 0)
ret = err;
}
if (ret == 0)
return 0;
/* One or more streams could not be initialized. Clean 'em all up. */
cx18_streams_cleanup(cx, 1);
return ret;
}
/* 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++) {
/* The TS has a cx18_dvb structure, not a video_device */
if (type == CX18_ENC_STREAM_TYPE_TS) {
if (cx->streams[type].dvb != NULL) {
if (unregister)
cx18_dvb_unregister(&cx->streams[type]);
kfree(cx->streams[type].dvb);
cx->streams[type].dvb = NULL;
cx18_stream_free(&cx->streams[type]);
}
continue;
}
/* No struct video_device, but can have buffers allocated */
if (type == CX18_ENC_STREAM_TYPE_IDX) {
/* If the module params didn't inhibit IDX ... */
if (cx->stream_buffers[type] != 0) {
cx->stream_buffers[type] = 0;
/*
* Before calling cx18_stream_free(),
* check if the IDX stream was actually set up.
* Needed, since the cx18_probe() error path
* exits through here as well as normal clean up
*/
if (cx->streams[type].buffers != 0)
cx18_stream_free(&cx->streams[type]);
}
continue;
}
/* If struct video_device exists, can have buffers allocated */
vdev = &cx->streams[type].video_dev;
if (vdev->v4l2_dev == NULL)
continue;
cx18_stream_free(&cx->streams[type]);
if (type == CX18_ENC_STREAM_TYPE_YUV)
vb2_video_unregister_device(vdev);
else
video_unregister_device(vdev);
}
}
static void cx18_vbi_setup(struct cx18_stream *s)
{
struct cx18 *cx = s->cx;
int raw = cx18_raw_vbi(cx);
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 */
if (raw)
v4l2_subdev_call(cx->sd_av, vbi, s_raw_fmt, &cx->vbi.in.fmt.vbi);
else
v4l2_subdev_call(cx->sd_av, vbi, s_sliced_fmt, &cx->vbi.in.fmt.sliced);
/*
* Send the CX18_CPU_SET_RAW_VBI_PARAM API command to setup Encoder Raw
* VBI when the first analog capture channel starts, as once it starts
* (e.g. MPEG), we can't effect any change in the Encoder Raw VBI setup
* (i.e. for the VBI capture channels). We also send it for each
* analog capture channel anyway just to make sure we get the proper
* behavior
*/
if (raw) {
lines = cx->vbi.count * 2;
} else {
/*
* For 525/60 systems, according to the VIP 2 & BT.656 std:
* The EAV RP code's Field bit toggles on line 4, a few lines
* after the Vertcal Blank bit has already toggled.
* Tell the encoder to capture 21-4+1=18 lines per field,
* since we want lines 10 through 21.
*
* For 625/50 systems, according to the VIP 2 & BT.656 std:
* The EAV RP code's Field bit toggles on line 1, a few lines
* after the Vertcal Blank bit has already toggled.
* (We've actually set the digitizer so that the Field bit
* toggles on line 2.) Tell the encoder to capture 23-2+1=22
* lines per field, since we want lines 6 through 23.
*/
lines = cx->is_60hz ? (21 - 4 + 1) * 2 : (23 - 2 + 1) * 2;
}
data[0] = s->handle;
/* Lines per field */
data[1] = (lines / 2) | ((lines / 2) << 16);
/* bytes per line */
data[2] = (raw ? VBI_ACTIVE_SAMPLES
: (cx->is_60hz ? VBI_HBLANK_SAMPLES_60HZ
: VBI_HBLANK_SAMPLES_50HZ));
/* Every X number of frames a VBI interrupt arrives
(frames as in 25 or 30 fps) */
data[3] = 1;
/*
* Set the SAV/EAV RP codes to look for as start/stop points
* when in VIP-1.1 mode
*/
if (raw) {
/*
* Start codes for beginning of "active" line in vertical blank
* 0x20 ( VerticalBlank )
* 0x60 ( EvenField VerticalBlank )
*/
data[4] = 0x20602060;
/*
* End codes for end of "active" raw lines and regular lines
* 0x30 ( VerticalBlank HorizontalBlank)
* 0x70 ( EvenField VerticalBlank HorizontalBlank)
* 0x90 (Task HorizontalBlank)
* 0xd0 (Task EvenField HorizontalBlank)
*/
data[5] = 0x307090d0;
} else {
/*
* End codes for active video, we want data in the hblank region
* 0xb0 (Task 0 VerticalBlank HorizontalBlank)
* 0xf0 (Task EvenField VerticalBlank HorizontalBlank)
*
* Since the V bit is only allowed to toggle in the EAV RP code,
* just before the first active region line, these two
* are problematic:
* 0x90 (Task HorizontalBlank)
* 0xd0 (Task EvenField HorizontalBlank)
*
* We have set the digitzer such that we don't have to worry
* about these problem codes.
*/
data[4] = 0xB0F0B0F0;
/*
* Start codes for beginning of active line in vertical blank
* 0xa0 (Task VerticalBlank )
* 0xe0 (Task EvenField VerticalBlank )
*/
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]);
cx18_api(cx, CX18_CPU_SET_RAW_VBI_PARAM, 6, data);
}
void cx18_stream_rotate_idx_mdls(struct cx18 *cx)
{
struct cx18_stream *s = &cx->streams[CX18_ENC_STREAM_TYPE_IDX];
struct cx18_mdl *mdl;
if (!cx18_stream_enabled(s))
return;
/* Return if the firmware is not running low on MDLs */
if ((atomic_read(&s->q_free.depth) + atomic_read(&s->q_busy.depth)) >=
CX18_ENC_STREAM_TYPE_IDX_FW_MDL_MIN)
return;
/* Return if there are no MDLs to rotate back to the firmware */
if (atomic_read(&s->q_full.depth) < 2)
return;
/*
* Take the oldest IDX MDL still holding data, and discard its index
* entries by scheduling the MDL to go back to the firmware
*/
mdl = cx18_dequeue(s, &s->q_full);
if (mdl != NULL)
cx18_enqueue(s, mdl, &s->q_free);
}
static
struct cx18_queue *_cx18_stream_put_mdl_fw(struct cx18_stream *s,
struct cx18_mdl *mdl)
{
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_STOPPING, &s->s_flags) ||
!test_bit(CX18_F_S_STREAMING, &s->s_flags))
return cx18_enqueue(s, mdl, &s->q_free);
q = cx18_enqueue(s, mdl, &s->q_busy);
if (q != &s->q_busy)
return q; /* The firmware has the max MDLs it can handle */
cx18_mdl_sync_for_device(s, mdl);
cx18_vapi(cx, CX18_CPU_DE_SET_MDL, 5, s->handle,
(void __iomem *) &cx->scb->cpu_mdl[mdl->id] - cx->enc_mem,
s->bufs_per_mdl, mdl->id, s->mdl_size);
return q;
}
static
void _cx18_stream_load_fw_queue(struct cx18_stream *s)
{
struct cx18_queue *q;
struct cx18_mdl *mdl;
if (atomic_read(&s->q_free.depth) == 0 ||
atomic_read(&s->q_busy.depth) >= CX18_MAX_FW_MDLS_PER_STREAM)
return;
/* Move from q_free to q_busy notifying the firmware, until the limit */
do {
mdl = cx18_dequeue(s, &s->q_free);
if (mdl == NULL)
break;
q = _cx18_stream_put_mdl_fw(s, mdl);
} while (atomic_read(&s->q_busy.depth) < CX18_MAX_FW_MDLS_PER_STREAM
&& q == &s->q_busy);
}
void cx18_out_work_handler(struct work_struct *work)
{
struct cx18_stream *s =
container_of(work, struct cx18_stream, out_work_order);
_cx18_stream_load_fw_queue(s);
}
static void cx18_stream_configure_mdls(struct cx18_stream *s)
{
cx18_unload_queues(s);
switch (s->type) {
case CX18_ENC_STREAM_TYPE_YUV:
/*
* Height should be a multiple of 32 lines.
* Set the MDL size to the exact size needed for one frame.
* Use enough buffers per MDL to cover the MDL size
*/
if (s->pixelformat == V4L2_PIX_FMT_NV12_16L16)
s->mdl_size = 720 * s->cx->cxhdl.height * 3 / 2;
else
s->mdl_size = 720 * s->cx->cxhdl.height * 2;
s->bufs_per_mdl = s->mdl_size / s->buf_size;
if (s->mdl_size % s->buf_size)
s->bufs_per_mdl++;
break;
case CX18_ENC_STREAM_TYPE_VBI:
s->bufs_per_mdl = 1;
if (cx18_raw_vbi(s->cx)) {
s->mdl_size = (s->cx->is_60hz ? 12 : 18)
* 2 * VBI_ACTIVE_SAMPLES;
} else {
/*
* See comment in cx18_vbi_setup() below about the
* extra lines we capture in sliced VBI mode due to
* the lines on which EAV RP codes toggle.
*/
s->mdl_size = s->cx->is_60hz
? (21 - 4 + 1) * 2 * VBI_HBLANK_SAMPLES_60HZ
: (23 - 2 + 1) * 2 * VBI_HBLANK_SAMPLES_50HZ;
}
break;
default:
s->bufs_per_mdl = 1;
s->mdl_size = s->buf_size * s->bufs_per_mdl;
break;
}
cx18_load_queues(s);
}
int cx18_start_v4l2_encode_stream(struct cx18_stream *s)
{
u32 data[MAX_MB_ARGUMENTS];
struct cx18 *cx = s->cx;
int captype = 0;
struct cx18_stream *s_idx;
if (!cx18_stream_enabled(s))
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 = v4l2_ctrl_g_ctrl(cx->cxhdl.audio_mode);
cx->search_pack_header = 0;
break;
case CX18_ENC_STREAM_TYPE_IDX:
captype = CAPTURE_CHANNEL_TYPE_INDEX;
break;
case CX18_ENC_STREAM_TYPE_TS:
captype = CAPTURE_CHANNEL_TYPE_TS;
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:
#ifdef CX18_ENCODER_PARSES_SLICED
captype = cx18_raw_vbi(cx) ?
CAPTURE_CHANNEL_TYPE_VBI : CAPTURE_CHANNEL_TYPE_SLICED_VBI;
#else
/*
* Currently we set things up so that Sliced VBI from the
* digitizer is handled as Raw VBI by the encoder
*/
captype = CAPTURE_CHANNEL_TYPE_VBI;
#endif
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;
}
/* 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);
/*
* For everything but CAPTURE_CHANNEL_TYPE_TS, play it safe and
* set up all the parameters, as it is not obvious which parameters the
* firmware shares across capture channel types and which it does not.
*
* Some of the cx18_vapi() calls below apply to only certain capture
* channel types. We're hoping there's no harm in calling most of them
* anyway, as long as the values are all consistent. Setting some
* shared parameters will have no effect once an analog capture channel
* has started streaming.
*/
if (captype != CAPTURE_CHANNEL_TYPE_TS) {
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);
/*
* Audio related reset according to
* Documentation/driver-api/media/drivers/cx2341x-devel.rst
*/
if (atomic_read(&cx->ana_capturing) == 0)
cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 2,
s->handle, 12);
/*
* Number of lines for Field 1 & Field 2 according to
* Documentation/driver-api/media/drivers/cx2341x-devel.rst
* Field 1 is 312 for 625 line systems in BT.656
* Field 2 is 313 for 625 line systems in BT.656
*/
cx18_vapi(cx, CX18_CPU_SET_CAPTURE_LINE_NO, 3,
s->handle, 312, 313);
if (cx->v4l2_cap & V4L2_CAP_VBI_CAPTURE)
cx18_vbi_setup(s);
/*
* Select to receive I, P, and B frame index entries, if the
* index stream is enabled. Otherwise disable index entry
* generation.
*/
s_idx = &cx->streams[CX18_ENC_STREAM_TYPE_IDX];
cx18_vapi_result(cx, data, CX18_CPU_SET_INDEXTABLE, 2,
s->handle, cx18_stream_enabled(s_idx) ? 7 : 0);
/* Call out to the common CX2341x API setup for user controls */
cx->cxhdl.priv = s;
cx2341x_handler_setup(&cx->cxhdl);
/*
* When starting a capture and we're set for radio,
* ensure the video is muted, despite the user control.
*/
if (!cx->cxhdl.video_mute &&
test_bit(CX18_F_I_RADIO_USER, &cx->i_flags))
cx18_vapi(cx, CX18_CPU_SET_VIDEO_MUTE, 2, s->handle,
(v4l2_ctrl_g_ctrl(cx->cxhdl.video_mute_yuv) << 8) | 1);
/* Enable the Video Format Converter for UYVY 4:2:2 support,
* rather than the default HM12 Macroblovk 4:2:0 support.
*/
if (captype == CAPTURE_CHANNEL_TYPE_YUV) {
if (s->pixelformat == V4L2_PIX_FMT_UYVY)
cx18_vapi(cx, CX18_CPU_SET_VFC_PARAM, 2,
s->handle, 1);
else
/* If in doubt, default to HM12 */
cx18_vapi(cx, CX18_CPU_SET_VFC_PARAM, 2,
s->handle, 0);
}
}
if (atomic_read(&cx->tot_capturing) == 0) {
cx2341x_handler_set_busy(&cx->cxhdl, 1);
clear_bit(CX18_F_I_EOS, &cx->i_flags);
cx18_write_reg(cx, 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);
/* Init all the cpu_mdls for this stream */
cx18_stream_configure_mdls(s);
_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");
/* Ensure we're really not capturing before releasing MDLs */
set_bit(CX18_F_S_STOPPING, &s->s_flags);
if (s->type == CX18_ENC_STREAM_TYPE_MPG)
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);
s->handle = CX18_INVALID_TASK_HANDLE;
clear_bit(CX18_F_S_STOPPING, &s->s_flags);
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;
}
/* you're live! sit back and await interrupts :) */
if (captype != CAPTURE_CHANNEL_TYPE_TS)
atomic_inc(&cx->ana_capturing);
atomic_inc(&cx->tot_capturing);
return 0;
}
EXPORT_SYMBOL(cx18_start_v4l2_encode_stream);
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 (!cx18_stream_enabled(s))
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;
if (!cx18_stream_enabled(s))
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;
set_bit(CX18_F_S_STOPPING, &s->s_flags);
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);
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);
/* 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;
clear_bit(CX18_F_S_STOPPING, &s->s_flags);
if (atomic_read(&cx->tot_capturing) > 0)
return 0;
cx2341x_handler_set_busy(&cx->cxhdl, 0);
cx18_write_reg(cx, 5, CX18_DSP0_INTERRUPT_MASK);
wake_up(&s->waitq);
return 0;
}
EXPORT_SYMBOL(cx18_stop_v4l2_encode_stream);
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->video_dev.v4l2_dev && (s->handle != CX18_INVALID_TASK_HANDLE))
return s->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 (cx18_stream_enabled(s))
return s;
}
return NULL;
}
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