// SPDX-License-Identifier: GPL-2.0-only
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/*
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* vivid-vbi-cap.c - vbi capture support functions.
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*
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* Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
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*/
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#include <linux/errno.h>
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#include <linux/kernel.h>
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#include <linux/videodev2.h>
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#include <media/v4l2-common.h>
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#include "vivid-core.h"
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#include "vivid-kthread-cap.h"
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#include "vivid-vbi-cap.h"
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#include "vivid-vbi-gen.h"
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static void vivid_sliced_vbi_cap_fill(struct vivid_dev *dev, unsigned seqnr)
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{
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struct vivid_vbi_gen_data *vbi_gen = &dev->vbi_gen;
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bool is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60;
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vivid_vbi_gen_sliced(vbi_gen, is_60hz, seqnr);
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if (!is_60hz) {
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if (dev->loop_video) {
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if (dev->vbi_out_have_wss) {
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vbi_gen->data[12].data[0] = dev->vbi_out_wss[0];
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vbi_gen->data[12].data[1] = dev->vbi_out_wss[1];
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} else {
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vbi_gen->data[12].id = 0;
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}
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} else {
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switch (tpg_g_video_aspect(&dev->tpg)) {
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case TPG_VIDEO_ASPECT_14X9_CENTRE:
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vbi_gen->data[12].data[0] = 0x01;
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break;
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case TPG_VIDEO_ASPECT_16X9_CENTRE:
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vbi_gen->data[12].data[0] = 0x0b;
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break;
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case TPG_VIDEO_ASPECT_16X9_ANAMORPHIC:
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vbi_gen->data[12].data[0] = 0x07;
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break;
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case TPG_VIDEO_ASPECT_4X3:
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default:
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vbi_gen->data[12].data[0] = 0x08;
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break;
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}
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}
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} else if (dev->loop_video && is_60hz) {
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if (dev->vbi_out_have_cc[0]) {
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vbi_gen->data[0].data[0] = dev->vbi_out_cc[0][0];
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vbi_gen->data[0].data[1] = dev->vbi_out_cc[0][1];
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} else {
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vbi_gen->data[0].id = 0;
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}
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if (dev->vbi_out_have_cc[1]) {
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vbi_gen->data[1].data[0] = dev->vbi_out_cc[1][0];
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vbi_gen->data[1].data[1] = dev->vbi_out_cc[1][1];
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} else {
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vbi_gen->data[1].id = 0;
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}
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}
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}
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static void vivid_g_fmt_vbi_cap(struct vivid_dev *dev, struct v4l2_vbi_format *vbi)
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{
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bool is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60;
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vbi->sampling_rate = 27000000;
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vbi->offset = 24;
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vbi->samples_per_line = 1440;
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vbi->sample_format = V4L2_PIX_FMT_GREY;
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vbi->start[0] = is_60hz ? V4L2_VBI_ITU_525_F1_START + 9 : V4L2_VBI_ITU_625_F1_START + 5;
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vbi->start[1] = is_60hz ? V4L2_VBI_ITU_525_F2_START + 9 : V4L2_VBI_ITU_625_F2_START + 5;
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vbi->count[0] = vbi->count[1] = is_60hz ? 12 : 18;
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vbi->flags = dev->vbi_cap_interlaced ? V4L2_VBI_INTERLACED : 0;
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vbi->reserved[0] = 0;
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vbi->reserved[1] = 0;
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}
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void vivid_raw_vbi_cap_process(struct vivid_dev *dev, struct vivid_buffer *buf)
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{
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struct v4l2_vbi_format vbi;
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u8 *vbuf = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
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vivid_g_fmt_vbi_cap(dev, &vbi);
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buf->vb.sequence = dev->vbi_cap_seq_count;
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if (dev->field_cap == V4L2_FIELD_ALTERNATE)
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buf->vb.sequence /= 2;
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vivid_sliced_vbi_cap_fill(dev, buf->vb.sequence);
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memset(vbuf, 0x10, vb2_plane_size(&buf->vb.vb2_buf, 0));
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if (!VIVID_INVALID_SIGNAL(dev->std_signal_mode[dev->input]))
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vivid_vbi_gen_raw(&dev->vbi_gen, &vbi, vbuf);
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}
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void vivid_sliced_vbi_cap_process(struct vivid_dev *dev,
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struct vivid_buffer *buf)
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{
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struct v4l2_sliced_vbi_data *vbuf =
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vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
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buf->vb.sequence = dev->vbi_cap_seq_count;
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if (dev->field_cap == V4L2_FIELD_ALTERNATE)
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buf->vb.sequence /= 2;
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vivid_sliced_vbi_cap_fill(dev, buf->vb.sequence);
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memset(vbuf, 0, vb2_plane_size(&buf->vb.vb2_buf, 0));
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if (!VIVID_INVALID_SIGNAL(dev->std_signal_mode[dev->input])) {
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unsigned i;
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for (i = 0; i < 25; i++)
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vbuf[i] = dev->vbi_gen.data[i];
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}
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}
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static int vbi_cap_queue_setup(struct vb2_queue *vq,
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unsigned *nbuffers, unsigned *nplanes,
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unsigned sizes[], struct device *alloc_devs[])
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{
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struct vivid_dev *dev = vb2_get_drv_priv(vq);
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bool is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60;
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unsigned size = vq->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE ?
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36 * sizeof(struct v4l2_sliced_vbi_data) :
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1440 * 2 * (is_60hz ? 12 : 18);
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if (!vivid_is_sdtv_cap(dev))
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return -EINVAL;
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sizes[0] = size;
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if (vq->num_buffers + *nbuffers < 2)
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*nbuffers = 2 - vq->num_buffers;
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*nplanes = 1;
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return 0;
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}
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static int vbi_cap_buf_prepare(struct vb2_buffer *vb)
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{
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struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
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bool is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60;
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unsigned size = vb->vb2_queue->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE ?
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36 * sizeof(struct v4l2_sliced_vbi_data) :
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1440 * 2 * (is_60hz ? 12 : 18);
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dprintk(dev, 1, "%s\n", __func__);
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if (dev->buf_prepare_error) {
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/*
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* Error injection: test what happens if buf_prepare() returns
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* an error.
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*/
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dev->buf_prepare_error = false;
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return -EINVAL;
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}
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if (vb2_plane_size(vb, 0) < size) {
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dprintk(dev, 1, "%s data will not fit into plane (%lu < %u)\n",
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__func__, vb2_plane_size(vb, 0), size);
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return -EINVAL;
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}
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vb2_set_plane_payload(vb, 0, size);
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return 0;
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}
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static void vbi_cap_buf_queue(struct vb2_buffer *vb)
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{
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struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
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struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
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struct vivid_buffer *buf = container_of(vbuf, struct vivid_buffer, vb);
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dprintk(dev, 1, "%s\n", __func__);
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spin_lock(&dev->slock);
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list_add_tail(&buf->list, &dev->vbi_cap_active);
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spin_unlock(&dev->slock);
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}
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static int vbi_cap_start_streaming(struct vb2_queue *vq, unsigned count)
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{
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struct vivid_dev *dev = vb2_get_drv_priv(vq);
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int err;
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dprintk(dev, 1, "%s\n", __func__);
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dev->vbi_cap_seq_count = 0;
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if (dev->start_streaming_error) {
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dev->start_streaming_error = false;
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err = -EINVAL;
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} else {
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err = vivid_start_generating_vid_cap(dev, &dev->vbi_cap_streaming);
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}
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if (err) {
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struct vivid_buffer *buf, *tmp;
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list_for_each_entry_safe(buf, tmp, &dev->vbi_cap_active, list) {
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list_del(&buf->list);
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vb2_buffer_done(&buf->vb.vb2_buf,
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VB2_BUF_STATE_QUEUED);
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}
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}
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return err;
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}
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/* abort streaming and wait for last buffer */
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static void vbi_cap_stop_streaming(struct vb2_queue *vq)
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{
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struct vivid_dev *dev = vb2_get_drv_priv(vq);
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dprintk(dev, 1, "%s\n", __func__);
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vivid_stop_generating_vid_cap(dev, &dev->vbi_cap_streaming);
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}
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static void vbi_cap_buf_request_complete(struct vb2_buffer *vb)
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{
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struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
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v4l2_ctrl_request_complete(vb->req_obj.req, &dev->ctrl_hdl_vbi_cap);
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}
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const struct vb2_ops vivid_vbi_cap_qops = {
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.queue_setup = vbi_cap_queue_setup,
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.buf_prepare = vbi_cap_buf_prepare,
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.buf_queue = vbi_cap_buf_queue,
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.start_streaming = vbi_cap_start_streaming,
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.stop_streaming = vbi_cap_stop_streaming,
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.buf_request_complete = vbi_cap_buf_request_complete,
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.wait_prepare = vb2_ops_wait_prepare,
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.wait_finish = vb2_ops_wait_finish,
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};
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int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
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struct v4l2_format *f)
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{
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struct vivid_dev *dev = video_drvdata(file);
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struct v4l2_vbi_format *vbi = &f->fmt.vbi;
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if (!vivid_is_sdtv_cap(dev) || !dev->has_raw_vbi_cap)
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return -EINVAL;
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vivid_g_fmt_vbi_cap(dev, vbi);
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return 0;
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}
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int vidioc_s_fmt_vbi_cap(struct file *file, void *priv,
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struct v4l2_format *f)
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{
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struct vivid_dev *dev = video_drvdata(file);
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int ret = vidioc_g_fmt_vbi_cap(file, priv, f);
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if (ret)
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return ret;
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if (dev->stream_sliced_vbi_cap && vb2_is_busy(&dev->vb_vbi_cap_q))
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return -EBUSY;
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dev->stream_sliced_vbi_cap = false;
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dev->vbi_cap_dev.queue->type = V4L2_BUF_TYPE_VBI_CAPTURE;
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return 0;
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}
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void vivid_fill_service_lines(struct v4l2_sliced_vbi_format *vbi, u32 service_set)
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{
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vbi->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36;
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vbi->service_set = service_set;
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memset(vbi->service_lines, 0, sizeof(vbi->service_lines));
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memset(vbi->reserved, 0, sizeof(vbi->reserved));
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if (vbi->service_set == 0)
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return;
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if (vbi->service_set & V4L2_SLICED_CAPTION_525) {
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vbi->service_lines[0][21] = V4L2_SLICED_CAPTION_525;
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vbi->service_lines[1][21] = V4L2_SLICED_CAPTION_525;
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}
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if (vbi->service_set & V4L2_SLICED_WSS_625) {
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unsigned i;
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for (i = 7; i <= 18; i++)
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vbi->service_lines[0][i] =
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vbi->service_lines[1][i] = V4L2_SLICED_TELETEXT_B;
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vbi->service_lines[0][23] = V4L2_SLICED_WSS_625;
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}
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}
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int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt)
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{
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struct vivid_dev *dev = video_drvdata(file);
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struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced;
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if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap)
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return -EINVAL;
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vivid_fill_service_lines(vbi, dev->service_set_cap);
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return 0;
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}
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int vidioc_try_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt)
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{
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struct vivid_dev *dev = video_drvdata(file);
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struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced;
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bool is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60;
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u32 service_set = vbi->service_set;
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if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap)
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return -EINVAL;
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service_set &= is_60hz ? V4L2_SLICED_CAPTION_525 :
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V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
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vivid_fill_service_lines(vbi, service_set);
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return 0;
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}
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int vidioc_s_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt)
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{
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struct vivid_dev *dev = video_drvdata(file);
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struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced;
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int ret = vidioc_try_fmt_sliced_vbi_cap(file, fh, fmt);
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if (ret)
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return ret;
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if (!dev->stream_sliced_vbi_cap && vb2_is_busy(&dev->vb_vbi_cap_q))
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return -EBUSY;
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dev->service_set_cap = vbi->service_set;
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dev->stream_sliced_vbi_cap = true;
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dev->vbi_cap_dev.queue->type = V4L2_BUF_TYPE_SLICED_VBI_CAPTURE;
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return 0;
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}
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int vidioc_g_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_sliced_vbi_cap *cap)
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{
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struct vivid_dev *dev = video_drvdata(file);
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struct video_device *vdev = video_devdata(file);
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bool is_60hz;
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if (vdev->vfl_dir == VFL_DIR_RX) {
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is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60;
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if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap ||
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cap->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE)
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return -EINVAL;
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} else {
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is_60hz = dev->std_out & V4L2_STD_525_60;
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if (!vivid_is_svid_out(dev) || !dev->has_sliced_vbi_out ||
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cap->type != V4L2_BUF_TYPE_SLICED_VBI_OUTPUT)
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return -EINVAL;
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}
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cap->service_set = is_60hz ? V4L2_SLICED_CAPTION_525 :
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V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
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if (is_60hz) {
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cap->service_lines[0][21] = V4L2_SLICED_CAPTION_525;
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cap->service_lines[1][21] = V4L2_SLICED_CAPTION_525;
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} else {
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unsigned i;
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for (i = 7; i <= 18; i++)
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cap->service_lines[0][i] =
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cap->service_lines[1][i] = V4L2_SLICED_TELETEXT_B;
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cap->service_lines[0][23] = V4L2_SLICED_WSS_625;
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}
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return 0;
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}
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