// SPDX-License-Identifier: GPL-2.0-only
/*
* vivid-vbi-cap.c - vbi capture support functions.
*
* Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
*/
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include "vivid-core.h"
#include "vivid-kthread-cap.h"
#include "vivid-vbi-cap.h"
#include "vivid-vbi-gen.h"
#include "vivid-vid-common.h"
static void vivid_sliced_vbi_cap_fill(struct vivid_dev *dev, unsigned seqnr)
{
struct vivid_vbi_gen_data *vbi_gen = &dev->vbi_gen;
bool is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60;
vivid_vbi_gen_sliced(vbi_gen, is_60hz, seqnr);
if (!is_60hz) {
if (vivid_vid_can_loop(dev)) {
if (dev->vbi_out_have_wss) {
vbi_gen->data[12 ].data[0 ] = dev->vbi_out_wss[0 ];
vbi_gen->data[12 ].data[1 ] = dev->vbi_out_wss[1 ];
} else {
vbi_gen->data[12 ].id = 0 ;
}
} else {
switch (tpg_g_video_aspect(&dev->tpg)) {
case TPG_VIDEO_ASPECT_14X9_CENTRE:
vbi_gen->data[12 ].data[0 ] = 0 x01;
break ;
case TPG_VIDEO_ASPECT_16X9_CENTRE:
vbi_gen->data[12 ].data[0 ] = 0 x0b;
break ;
case TPG_VIDEO_ASPECT_16X9_ANAMORPHIC:
vbi_gen->data[12 ].data[0 ] = 0 x07;
break ;
case TPG_VIDEO_ASPECT_4X3:
default :
vbi_gen->data[12 ].data[0 ] = 0 x08;
break ;
}
}
} else if (vivid_vid_can_loop(dev) && is_60hz) {
if (dev->vbi_out_have_cc[0 ]) {
vbi_gen->data[0 ].data[0 ] = dev->vbi_out_cc[0 ][0 ];
vbi_gen->data[0 ].data[1 ] = dev->vbi_out_cc[0 ][1 ];
} else {
vbi_gen->data[0 ].id = 0 ;
}
if (dev->vbi_out_have_cc[1 ]) {
vbi_gen->data[1 ].data[0 ] = dev->vbi_out_cc[1 ][0 ];
vbi_gen->data[1 ].data[1 ] = dev->vbi_out_cc[1 ][1 ];
} else {
vbi_gen->data[1 ].id = 0 ;
}
}
}
static void vivid_g_fmt_vbi_cap(struct vivid_dev *dev, struct v4l2_vbi_format *vbi)
{
bool is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60;
vbi->sampling_rate = 27000000 ;
vbi->offset = 24 ;
vbi->samples_per_line = 1440 ;
vbi->sample_format = V4L2_PIX_FMT_GREY;
vbi->start[0 ] = is_60hz ? V4L2_VBI_ITU_525_F1_START + 9 : V4L2_VBI_ITU_625_F1_START + 5 ;
vbi->start[1 ] = is_60hz ? V4L2_VBI_ITU_525_F2_START + 9 : V4L2_VBI_ITU_625_F2_START + 5 ;
vbi->count[0 ] = vbi->count[1 ] = is_60hz ? 12 : 18 ;
vbi->flags = dev->vbi_cap_interlaced ? V4L2_VBI_INTERLACED : 0 ;
vbi->reserved[0 ] = 0 ;
vbi->reserved[1 ] = 0 ;
}
void vivid_raw_vbi_cap_process(struct vivid_dev *dev, struct vivid_buffer *buf)
{
struct v4l2_vbi_format vbi;
u8 *vbuf = vb2_plane_vaddr(&buf->vb.vb2_buf, 0 );
vivid_g_fmt_vbi_cap(dev, &vbi);
buf->vb.sequence = dev->vbi_cap_seq_count;
if (dev->field_cap == V4L2_FIELD_ALTERNATE)
buf->vb.sequence /= 2 ;
vivid_sliced_vbi_cap_fill(dev, buf->vb.sequence);
memset(vbuf, 0 x10, vb2_plane_size(&buf->vb.vb2_buf, 0 ));
if (!VIVID_INVALID_SIGNAL(dev->std_signal_mode[dev->input]))
vivid_vbi_gen_raw(&dev->vbi_gen, &vbi, vbuf);
}
void vivid_sliced_vbi_cap_process(struct vivid_dev *dev,
struct vivid_buffer *buf)
{
struct v4l2_sliced_vbi_data *vbuf =
vb2_plane_vaddr(&buf->vb.vb2_buf, 0 );
buf->vb.sequence = dev->vbi_cap_seq_count;
if (dev->field_cap == V4L2_FIELD_ALTERNATE)
buf->vb.sequence /= 2 ;
vivid_sliced_vbi_cap_fill(dev, buf->vb.sequence);
memset(vbuf, 0 , vb2_plane_size(&buf->vb.vb2_buf, 0 ));
if (!VIVID_INVALID_SIGNAL(dev->std_signal_mode[dev->input])) {
unsigned i;
for (i = 0 ; i < 25 ; i++)
vbuf[i] = dev->vbi_gen.data[i];
}
}
static int vbi_cap_queue_setup(struct vb2_queue *vq,
unsigned *nbuffers, unsigned *nplanes,
unsigned sizes[], struct device *alloc_devs[])
{
struct vivid_dev *dev = vb2_get_drv_priv(vq);
bool is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60;
unsigned size = vq->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE ?
36 * sizeof (struct v4l2_sliced_vbi_data) :
1440 * 2 * (is_60hz ? 12 : 18 );
if (!vivid_is_sdtv_cap(dev))
return -EINVAL;
if (*nplanes)
return sizes[0 ] < size ? -EINVAL : 0 ;
sizes[0 ] = size;
*nplanes = 1 ;
return 0 ;
}
static int vbi_cap_buf_prepare(struct vb2_buffer *vb)
{
struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
bool is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60;
unsigned size = vb->vb2_queue->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE ?
36 * sizeof (struct v4l2_sliced_vbi_data) :
1440 * 2 * (is_60hz ? 12 : 18 );
dprintk(dev, 1 , "%s\n" , __func__);
if (dev->buf_prepare_error) {
/*
* Error injection: test what happens if buf_prepare() returns
* an error.
*/
dev->buf_prepare_error = false ;
return -EINVAL;
}
if (vb2_plane_size(vb, 0 ) < size) {
dprintk(dev, 1 , "%s data will not fit into plane (%lu < %u)\n" ,
__func__, vb2_plane_size(vb, 0 ), size);
return -EINVAL;
}
vb2_set_plane_payload(vb, 0 , size);
return 0 ;
}
static void vbi_cap_buf_queue(struct vb2_buffer *vb)
{
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
struct vivid_buffer *buf = container_of(vbuf, struct vivid_buffer, vb);
dprintk(dev, 1 , "%s\n" , __func__);
spin_lock(&dev->slock);
list_add_tail(&buf->list, &dev->vbi_cap_active);
spin_unlock(&dev->slock);
}
static int vbi_cap_start_streaming(struct vb2_queue *vq, unsigned count)
{
struct vivid_dev *dev = vb2_get_drv_priv(vq);
int err;
dprintk(dev, 1 , "%s\n" , __func__);
dev->vbi_cap_seq_count = 0 ;
if (dev->start_streaming_error) {
dev->start_streaming_error = false ;
err = -EINVAL;
} else {
err = vivid_start_generating_vid_cap(dev, &dev->vbi_cap_streaming);
}
if (err) {
struct vivid_buffer *buf, *tmp;
list_for_each_entry_safe(buf, tmp, &dev->vbi_cap_active, list) {
list_del(&buf->list);
vb2_buffer_done(&buf->vb.vb2_buf,
VB2_BUF_STATE_QUEUED);
}
}
return err;
}
/* abort streaming and wait for last buffer */
static void vbi_cap_stop_streaming(struct vb2_queue *vq)
{
struct vivid_dev *dev = vb2_get_drv_priv(vq);
dprintk(dev, 1 , "%s\n" , __func__);
vivid_stop_generating_vid_cap(dev, &dev->vbi_cap_streaming);
}
static void vbi_cap_buf_request_complete(struct vb2_buffer *vb)
{
struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
v4l2_ctrl_request_complete(vb->req_obj.req, &dev->ctrl_hdl_vbi_cap);
}
const struct vb2_ops vivid_vbi_cap_qops = {
.queue_setup = vbi_cap_queue_setup,
.buf_prepare = vbi_cap_buf_prepare,
.buf_queue = vbi_cap_buf_queue,
.start_streaming = vbi_cap_start_streaming,
.stop_streaming = vbi_cap_stop_streaming,
.buf_request_complete = vbi_cap_buf_request_complete,
};
int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct vivid_dev *dev = video_drvdata(file);
struct v4l2_vbi_format *vbi = &f->fmt.vbi;
if (!vivid_is_sdtv_cap(dev) || !dev->has_raw_vbi_cap)
return -EINVAL;
vivid_g_fmt_vbi_cap(dev, vbi);
return 0 ;
}
int vidioc_s_fmt_vbi_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct vivid_dev *dev = video_drvdata(file);
int ret = vidioc_g_fmt_vbi_cap(file, priv, f);
if (ret)
return ret;
if (f->type != V4L2_BUF_TYPE_VBI_CAPTURE && vb2_is_busy(&dev->vb_vbi_cap_q))
return -EBUSY;
return 0 ;
}
void vivid_fill_service_lines(struct v4l2_sliced_vbi_format *vbi, u32 service_set)
{
vbi->io_size = sizeof (struct v4l2_sliced_vbi_data) * 36 ;
vbi->service_set = service_set;
memset(vbi->service_lines, 0 , sizeof (vbi->service_lines));
memset(vbi->reserved, 0 , sizeof (vbi->reserved));
if (vbi->service_set == 0 )
return ;
if (vbi->service_set & V4L2_SLICED_CAPTION_525) {
vbi->service_lines[0 ][21 ] = V4L2_SLICED_CAPTION_525;
vbi->service_lines[1 ][21 ] = V4L2_SLICED_CAPTION_525;
}
if (vbi->service_set & V4L2_SLICED_WSS_625) {
unsigned i;
for (i = 7 ; i <= 18 ; i++)
vbi->service_lines[0 ][i] =
vbi->service_lines[1 ][i] = V4L2_SLICED_TELETEXT_B;
vbi->service_lines[0 ][23 ] = V4L2_SLICED_WSS_625;
}
}
int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt)
{
struct vivid_dev *dev = video_drvdata(file);
struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced;
if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap)
return -EINVAL;
vivid_fill_service_lines(vbi, dev->service_set_cap);
return 0 ;
}
int vidioc_try_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt)
{
struct vivid_dev *dev = video_drvdata(file);
struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced;
bool is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60;
u32 service_set = vbi->service_set;
if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap)
return -EINVAL;
service_set &= is_60hz ? V4L2_SLICED_CAPTION_525 :
V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
vivid_fill_service_lines(vbi, service_set);
return 0 ;
}
int vidioc_s_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt)
{
struct vivid_dev *dev = video_drvdata(file);
struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced;
int ret = vidioc_try_fmt_sliced_vbi_cap(file, fh, fmt);
if (ret)
return ret;
if (fmt->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE && vb2_is_busy(&dev->vb_vbi_cap_q))
return -EBUSY;
dev->service_set_cap = vbi->service_set;
return 0 ;
}
int vidioc_g_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_sliced_vbi_cap *cap)
{
struct vivid_dev *dev = video_drvdata(file);
struct video_device *vdev = video_devdata(file);
bool is_60hz;
if (vdev->vfl_dir == VFL_DIR_RX) {
is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60;
if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap ||
cap->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE)
return -EINVAL;
} else {
is_60hz = dev->std_out & V4L2_STD_525_60;
if (!vivid_is_svid_out(dev) || !dev->has_sliced_vbi_out ||
cap->type != V4L2_BUF_TYPE_SLICED_VBI_OUTPUT)
return -EINVAL;
}
cap->service_set = is_60hz ? V4L2_SLICED_CAPTION_525 :
V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
if (is_60hz) {
cap->service_lines[0 ][21 ] = V4L2_SLICED_CAPTION_525;
cap->service_lines[1 ][21 ] = V4L2_SLICED_CAPTION_525;
} else {
unsigned i;
for (i = 7 ; i <= 18 ; i++)
cap->service_lines[0 ][i] =
cap->service_lines[1 ][i] = V4L2_SLICED_TELETEXT_B;
cap->service_lines[0 ][23 ] = V4L2_SLICED_WSS_625;
}
return 0 ;
}
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