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344 lines
9.5 KiB
344 lines
9.5 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* |
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* (c) 2004 Gerd Knorr <[email protected]> [SuSE Labs] |
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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 <[email protected]> [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 const 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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f->pixelformat = V4L2_PIX_FMT_MPEG; |
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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 const 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, false); |
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if (dev->empress_sd) |
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v4l2_ctrl_add_handler(hdl, dev->empress_sd->ctrl_handler, NULL, true); |
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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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q->dev = &dev->pci->dev; |
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err = vb2_queue_init(q); |
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if (err) { |
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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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dev->empress_dev->queue = q; |
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dev->empress_dev->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_STREAMING | |
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V4L2_CAP_VIDEO_CAPTURE; |
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if (dev->tuner_type != TUNER_ABSENT && dev->tuner_type != UNSET) |
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dev->empress_dev->device_caps |= V4L2_CAP_TUNER; |
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video_set_drvdata(dev->empress_dev, dev); |
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err = video_register_device(dev->empress_dev,VFL_TYPE_VIDEO, |
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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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vb2_video_unregister_device(dev->empress_dev); |
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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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