diff options
Diffstat (limited to 'drivers/media/platform/vivid/vivid-vbi-cap.c')
| -rw-r--r-- | drivers/media/platform/vivid/vivid-vbi-cap.c | 361 |
1 files changed, 361 insertions, 0 deletions
diff --git a/drivers/media/platform/vivid/vivid-vbi-cap.c b/drivers/media/platform/vivid/vivid-vbi-cap.c new file mode 100644 index 000000000..92a852955 --- /dev/null +++ b/drivers/media/platform/vivid/vivid-vbi-cap.c @@ -0,0 +1,361 @@ +// 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" + +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 & V4L2_STD_525_60; + + vivid_vbi_gen_sliced(vbi_gen, is_60hz, seqnr); + + if (!is_60hz) { + if (dev->loop_video) { + 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] = 0x01; + break; + case TPG_VIDEO_ASPECT_16X9_CENTRE: + vbi_gen->data[12].data[0] = 0x0b; + break; + case TPG_VIDEO_ASPECT_16X9_ANAMORPHIC: + vbi_gen->data[12].data[0] = 0x07; + break; + case TPG_VIDEO_ASPECT_4X3: + default: + vbi_gen->data[12].data[0] = 0x08; + break; + } + } + } else if (dev->loop_video && 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 & 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, 0x10, vb2_plane_size(&buf->vb.vb2_buf, 0)); + + if (!VIVID_INVALID_SIGNAL(dev->std_signal_mode)) + vivid_vbi_gen_raw(&dev->vbi_gen, &vbi, vbuf); + + buf->vb.vb2_buf.timestamp = ktime_get_ns() + dev->time_wrap_offset; +} + + +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)) { + unsigned i; + + for (i = 0; i < 25; i++) + vbuf[i] = dev->vbi_gen.data[i]; + } + + buf->vb.vb2_buf.timestamp = ktime_get_ns() + dev->time_wrap_offset; +} + +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 & 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; + + sizes[0] = size; + + if (vq->num_buffers + *nbuffers < 2) + *nbuffers = 2 - vq->num_buffers; + + *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 & 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); +} + +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, + .wait_prepare = vb2_ops_wait_prepare, + .wait_finish = vb2_ops_wait_finish, +}; + +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 (dev->stream_sliced_vbi_cap && vb2_is_busy(&dev->vb_vbi_cap_q)) + return -EBUSY; + dev->stream_sliced_vbi_cap = false; + dev->vbi_cap_dev.queue->type = V4L2_BUF_TYPE_VBI_CAPTURE; + 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 & 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 (!dev->stream_sliced_vbi_cap && vb2_is_busy(&dev->vb_vbi_cap_q)) + return -EBUSY; + dev->service_set_cap = vbi->service_set; + dev->stream_sliced_vbi_cap = true; + dev->vbi_cap_dev.queue->type = V4L2_BUF_TYPE_SLICED_VBI_CAPTURE; + 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 & 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; +} |