353 lines
10 KiB
C
353 lines
10 KiB
C
/*
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*
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* (c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "saa7134.h"
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#include "saa7134-reg.h"
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#include <linux/init.h>
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#include <linux/list.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/delay.h>
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#include <media/v4l2-common.h>
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#include <media/v4l2-event.h>
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/* ------------------------------------------------------------------ */
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MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
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MODULE_LICENSE("GPL");
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static unsigned int empress_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
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module_param_array(empress_nr, int, NULL, 0444);
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MODULE_PARM_DESC(empress_nr,"ts device number");
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/* ------------------------------------------------------------------ */
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static int start_streaming(struct vb2_queue *vq, unsigned int count)
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{
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struct saa7134_dmaqueue *dmaq = vq->drv_priv;
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struct saa7134_dev *dev = dmaq->dev;
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u32 leading_null_bytes = 0;
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int err;
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err = saa7134_ts_start_streaming(vq, count);
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if (err)
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return err;
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/* If more cards start to need this, then this
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should probably be added to the card definitions. */
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switch (dev->board) {
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case SAA7134_BOARD_BEHOLD_M6:
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case SAA7134_BOARD_BEHOLD_M63:
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case SAA7134_BOARD_BEHOLD_M6_EXTRA:
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leading_null_bytes = 1;
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break;
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}
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saa_call_all(dev, core, init, leading_null_bytes);
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/* Unmute audio */
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saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
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saa_readb(SAA7134_AUDIO_MUTE_CTRL) & ~(1 << 6));
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dev->empress_started = 1;
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return 0;
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}
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static void stop_streaming(struct vb2_queue *vq)
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{
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struct saa7134_dmaqueue *dmaq = vq->drv_priv;
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struct saa7134_dev *dev = dmaq->dev;
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saa7134_ts_stop_streaming(vq);
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saa_writeb(SAA7134_SPECIAL_MODE, 0x00);
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msleep(20);
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saa_writeb(SAA7134_SPECIAL_MODE, 0x01);
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msleep(100);
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/* Mute audio */
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saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
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saa_readb(SAA7134_AUDIO_MUTE_CTRL) | (1 << 6));
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dev->empress_started = 0;
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}
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static struct vb2_ops saa7134_empress_qops = {
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.queue_setup = saa7134_ts_queue_setup,
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.buf_init = saa7134_ts_buffer_init,
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.buf_prepare = saa7134_ts_buffer_prepare,
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.buf_queue = saa7134_vb2_buffer_queue,
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.wait_prepare = vb2_ops_wait_prepare,
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.wait_finish = vb2_ops_wait_finish,
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.start_streaming = start_streaming,
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.stop_streaming = stop_streaming,
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};
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/* ------------------------------------------------------------------ */
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static int empress_enum_fmt_vid_cap(struct file *file, void *priv,
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struct v4l2_fmtdesc *f)
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{
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if (f->index != 0)
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return -EINVAL;
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strlcpy(f->description, "MPEG TS", sizeof(f->description));
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f->pixelformat = V4L2_PIX_FMT_MPEG;
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f->flags = V4L2_FMT_FLAG_COMPRESSED;
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return 0;
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}
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static int empress_g_fmt_vid_cap(struct file *file, void *priv,
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struct v4l2_format *f)
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{
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struct saa7134_dev *dev = video_drvdata(file);
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struct v4l2_subdev_format fmt = {
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.which = V4L2_SUBDEV_FORMAT_ACTIVE,
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};
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struct v4l2_mbus_framefmt *mbus_fmt = &fmt.format;
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saa_call_all(dev, pad, get_fmt, NULL, &fmt);
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v4l2_fill_pix_format(&f->fmt.pix, mbus_fmt);
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f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
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f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
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f->fmt.pix.bytesperline = 0;
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return 0;
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}
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static int empress_s_fmt_vid_cap(struct file *file, void *priv,
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struct v4l2_format *f)
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{
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struct saa7134_dev *dev = video_drvdata(file);
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struct v4l2_subdev_format format = {
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.which = V4L2_SUBDEV_FORMAT_ACTIVE,
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};
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v4l2_fill_mbus_format(&format.format, &f->fmt.pix, MEDIA_BUS_FMT_FIXED);
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saa_call_all(dev, pad, set_fmt, NULL, &format);
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v4l2_fill_pix_format(&f->fmt.pix, &format.format);
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f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
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f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
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f->fmt.pix.bytesperline = 0;
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return 0;
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}
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static int empress_try_fmt_vid_cap(struct file *file, void *priv,
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struct v4l2_format *f)
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{
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struct saa7134_dev *dev = video_drvdata(file);
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struct v4l2_subdev_pad_config pad_cfg;
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struct v4l2_subdev_format format = {
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.which = V4L2_SUBDEV_FORMAT_TRY,
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};
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v4l2_fill_mbus_format(&format.format, &f->fmt.pix, MEDIA_BUS_FMT_FIXED);
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saa_call_all(dev, pad, set_fmt, &pad_cfg, &format);
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v4l2_fill_pix_format(&f->fmt.pix, &format.format);
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f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
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f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
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f->fmt.pix.bytesperline = 0;
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return 0;
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}
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static const struct v4l2_file_operations ts_fops =
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{
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.owner = THIS_MODULE,
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.open = v4l2_fh_open,
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.release = vb2_fop_release,
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.read = vb2_fop_read,
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.poll = vb2_fop_poll,
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.mmap = vb2_fop_mmap,
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.unlocked_ioctl = video_ioctl2,
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};
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static const struct v4l2_ioctl_ops ts_ioctl_ops = {
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.vidioc_querycap = saa7134_querycap,
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.vidioc_enum_fmt_vid_cap = empress_enum_fmt_vid_cap,
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.vidioc_try_fmt_vid_cap = empress_try_fmt_vid_cap,
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.vidioc_s_fmt_vid_cap = empress_s_fmt_vid_cap,
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.vidioc_g_fmt_vid_cap = empress_g_fmt_vid_cap,
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.vidioc_reqbufs = vb2_ioctl_reqbufs,
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.vidioc_querybuf = vb2_ioctl_querybuf,
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.vidioc_qbuf = vb2_ioctl_qbuf,
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.vidioc_dqbuf = vb2_ioctl_dqbuf,
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.vidioc_expbuf = vb2_ioctl_expbuf,
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.vidioc_streamon = vb2_ioctl_streamon,
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.vidioc_streamoff = vb2_ioctl_streamoff,
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.vidioc_g_frequency = saa7134_g_frequency,
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.vidioc_s_frequency = saa7134_s_frequency,
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.vidioc_g_tuner = saa7134_g_tuner,
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.vidioc_s_tuner = saa7134_s_tuner,
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.vidioc_enum_input = saa7134_enum_input,
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.vidioc_g_input = saa7134_g_input,
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.vidioc_s_input = saa7134_s_input,
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.vidioc_s_std = saa7134_s_std,
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.vidioc_g_std = saa7134_g_std,
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.vidioc_querystd = saa7134_querystd,
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.vidioc_log_status = v4l2_ctrl_log_status,
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.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
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.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
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};
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/* ----------------------------------------------------------- */
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static struct video_device saa7134_empress_template = {
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.name = "saa7134-empress",
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.fops = &ts_fops,
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.ioctl_ops = &ts_ioctl_ops,
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.tvnorms = SAA7134_NORMS,
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};
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static void empress_signal_update(struct work_struct *work)
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{
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struct saa7134_dev* dev =
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container_of(work, struct saa7134_dev, empress_workqueue);
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if (dev->nosignal) {
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pr_debug("no video signal\n");
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} else {
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pr_debug("video signal acquired\n");
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}
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}
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static void empress_signal_change(struct saa7134_dev *dev)
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{
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schedule_work(&dev->empress_workqueue);
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}
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static bool empress_ctrl_filter(const struct v4l2_ctrl *ctrl)
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{
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switch (ctrl->id) {
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case V4L2_CID_BRIGHTNESS:
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case V4L2_CID_HUE:
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case V4L2_CID_CONTRAST:
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case V4L2_CID_SATURATION:
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case V4L2_CID_AUDIO_MUTE:
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case V4L2_CID_AUDIO_VOLUME:
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case V4L2_CID_PRIVATE_INVERT:
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case V4L2_CID_PRIVATE_AUTOMUTE:
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return true;
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default:
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return false;
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}
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}
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static int empress_init(struct saa7134_dev *dev)
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{
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struct v4l2_ctrl_handler *hdl = &dev->empress_ctrl_handler;
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struct vb2_queue *q;
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int err;
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pr_debug("%s: %s\n", dev->name, __func__);
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dev->empress_dev = video_device_alloc();
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if (NULL == dev->empress_dev)
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return -ENOMEM;
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*(dev->empress_dev) = saa7134_empress_template;
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dev->empress_dev->v4l2_dev = &dev->v4l2_dev;
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dev->empress_dev->release = video_device_release;
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dev->empress_dev->lock = &dev->lock;
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snprintf(dev->empress_dev->name, sizeof(dev->empress_dev->name),
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"%s empress (%s)", dev->name,
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saa7134_boards[dev->board].name);
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v4l2_ctrl_handler_init(hdl, 21);
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v4l2_ctrl_add_handler(hdl, &dev->ctrl_handler, empress_ctrl_filter);
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if (dev->empress_sd)
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v4l2_ctrl_add_handler(hdl, dev->empress_sd->ctrl_handler, NULL);
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if (hdl->error) {
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video_device_release(dev->empress_dev);
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return hdl->error;
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}
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dev->empress_dev->ctrl_handler = hdl;
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INIT_WORK(&dev->empress_workqueue, empress_signal_update);
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q = &dev->empress_vbq;
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q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
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/*
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* Do not add VB2_USERPTR: the saa7134 DMA engine cannot handle
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* transfers that do not start at the beginning of a page. A USERPTR
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* can start anywhere in a page, so USERPTR support is a no-go.
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*/
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q->io_modes = VB2_MMAP | VB2_DMABUF | VB2_READ;
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q->drv_priv = &dev->ts_q;
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q->ops = &saa7134_empress_qops;
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q->gfp_flags = GFP_DMA32;
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q->mem_ops = &vb2_dma_sg_memops;
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q->buf_struct_size = sizeof(struct saa7134_buf);
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q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
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q->lock = &dev->lock;
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err = vb2_queue_init(q);
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if (err)
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return err;
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dev->empress_dev->queue = q;
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video_set_drvdata(dev->empress_dev, dev);
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err = video_register_device(dev->empress_dev,VFL_TYPE_GRABBER,
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empress_nr[dev->nr]);
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if (err < 0) {
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pr_info("%s: can't register video device\n",
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dev->name);
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video_device_release(dev->empress_dev);
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dev->empress_dev = NULL;
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return err;
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}
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pr_info("%s: registered device %s [mpeg]\n",
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dev->name, video_device_node_name(dev->empress_dev));
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empress_signal_update(&dev->empress_workqueue);
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return 0;
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}
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static int empress_fini(struct saa7134_dev *dev)
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{
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pr_debug("%s: %s\n", dev->name, __func__);
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if (NULL == dev->empress_dev)
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return 0;
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flush_work(&dev->empress_workqueue);
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video_unregister_device(dev->empress_dev);
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vb2_queue_release(&dev->empress_vbq);
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v4l2_ctrl_handler_free(&dev->empress_ctrl_handler);
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dev->empress_dev = NULL;
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return 0;
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}
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static struct saa7134_mpeg_ops empress_ops = {
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.type = SAA7134_MPEG_EMPRESS,
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.init = empress_init,
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.fini = empress_fini,
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.signal_change = empress_signal_change,
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};
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static int __init empress_register(void)
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{
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return saa7134_ts_register(&empress_ops);
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}
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static void __exit empress_unregister(void)
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{
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saa7134_ts_unregister(&empress_ops);
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}
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module_init(empress_register);
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module_exit(empress_unregister);
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