path: root/drivers/media/pci/ivtv/ivtv-streams.c

/*
    init/start/stop/exit stream functions
    Copyright (C) 2003-2004  Kevin Thayer <nufan_wfk at yahoo.com>
    Copyright (C) 2004  Chris Kennedy <c@groovy.org>
    Copyright (C) 2005-2007  Hans Verkuil <hverkuil@xs4all.nl>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

/* License: GPL
 * Author: Kevin Thayer <nufan_wfk at yahoo dot com>
 *
 * This file will hold API related functions, both internal (firmware api)
 * and external (v4l2, etc)
 *
 * -----
 * MPG600/MPG160 support by  T.Adachi <tadachi@tadachi-net.com>
 *                      and Takeru KOMORIYA<komoriya@paken.org>
 *
 * AVerMedia M179 GPIO info by Chris Pinkham <cpinkham@bc2va.org>
 *                using information provided by Jiun-Kuei Jung @ AVerMedia.
 */

#include "ivtv-driver.h"
#include "ivtv-fileops.h"
#include "ivtv-queue.h"
#include "ivtv-mailbox.h"
#include "ivtv-ioctl.h"
#include "ivtv-irq.h"
#include "ivtv-yuv.h"
#include "ivtv-cards.h"
#include "ivtv-streams.h"
#include "ivtv-firmware.h"
#include <media/v4l2-event.h>

static const struct v4l2_file_operations ivtv_v4l2_enc_fops = {
	.owner = THIS_MODULE,
	.read = ivtv_v4l2_read,
	.write = ivtv_v4l2_write,
	.open = ivtv_v4l2_open,
	.unlocked_ioctl = video_ioctl2,
	.release = ivtv_v4l2_close,
	.poll = ivtv_v4l2_enc_poll,
};

static const struct v4l2_file_operations ivtv_v4l2_dec_fops = {
	.owner = THIS_MODULE,
	.read = ivtv_v4l2_read,
	.write = ivtv_v4l2_write,
	.open = ivtv_v4l2_open,
	.unlocked_ioctl = video_ioctl2,
	.release = ivtv_v4l2_close,
	.poll = ivtv_v4l2_dec_poll,
};

static const struct v4l2_file_operations ivtv_v4l2_radio_fops = {
	.owner = THIS_MODULE,
	.open = ivtv_v4l2_open,
	.unlocked_ioctl = video_ioctl2,
	.release = ivtv_v4l2_close,
	.poll = ivtv_v4l2_enc_poll,
};

#define IVTV_V4L2_DEC_MPG_OFFSET  16	/* offset from 0 to register decoder mpg v4l2 minors on */
#define IVTV_V4L2_ENC_PCM_OFFSET  24	/* offset from 0 to register pcm v4l2 minors on */
#define IVTV_V4L2_ENC_YUV_OFFSET  32	/* offset from 0 to register yuv v4l2 minors on */
#define IVTV_V4L2_DEC_YUV_OFFSET  48	/* offset from 0 to register decoder yuv v4l2 minors on */
#define IVTV_V4L2_DEC_VBI_OFFSET   8	/* offset from 0 to register decoder vbi input v4l2 minors on */
#define IVTV_V4L2_DEC_VOUT_OFFSET 16	/* offset from 0 to register vbi output v4l2 minors on */

static struct {
	const char *name;
	int vfl_type;
	int num_offset;
	int dma, pio;
	u32 v4l2_caps;
	const struct v4l2_file_operations *fops;
} ivtv_stream_info[] = {
	{	/* IVTV_ENC_STREAM_TYPE_MPG */
		"encoder MPG",
		VFL_TYPE_GRABBER, 0,
		PCI_DMA_FROMDEVICE, 0,
		V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TUNER |
			V4L2_CAP_AUDIO | V4L2_CAP_READWRITE,
		&ivtv_v4l2_enc_fops
	},
	{	/* IVTV_ENC_STREAM_TYPE_YUV */
		"encoder YUV",
		VFL_TYPE_GRABBER, IVTV_V4L2_ENC_YUV_OFFSET,
		PCI_DMA_FROMDEVICE, 0,
		V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TUNER |
			V4L2_CAP_AUDIO | V4L2_CAP_READWRITE,
		&ivtv_v4l2_enc_fops
	},
	{	/* IVTV_ENC_STREAM_TYPE_VBI */
		"encoder VBI",
		VFL_TYPE_VBI, 0,
		PCI_DMA_FROMDEVICE, 0,
		V4L2_CAP_VBI_CAPTURE | V4L2_CAP_SLICED_VBI_CAPTURE | V4L2_CAP_TUNER |
			V4L2_CAP_AUDIO | V4L2_CAP_READWRITE,
		&ivtv_v4l2_enc_fops
	},
	{	/* IVTV_ENC_STREAM_TYPE_PCM */
		"encoder PCM",
		VFL_TYPE_GRABBER, IVTV_V4L2_ENC_PCM_OFFSET,
		PCI_DMA_FROMDEVICE, 0,
		V4L2_CAP_TUNER | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE,
		&ivtv_v4l2_enc_fops
	},
	{	/* IVTV_ENC_STREAM_TYPE_RAD */
		"encoder radio",
		VFL_TYPE_RADIO, 0,
		PCI_DMA_NONE, 1,
		V4L2_CAP_RADIO | V4L2_CAP_TUNER,
		&ivtv_v4l2_radio_fops
	},
	{	/* IVTV_DEC_STREAM_TYPE_MPG */
		"decoder MPG",
		VFL_TYPE_GRABBER, IVTV_V4L2_DEC_MPG_OFFSET,
		PCI_DMA_TODEVICE, 0,
		V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE,
		&ivtv_v4l2_dec_fops
	},
	{	/* IVTV_DEC_STREAM_TYPE_VBI */
		"decoder VBI",
		VFL_TYPE_VBI, IVTV_V4L2_DEC_VBI_OFFSET,
		PCI_DMA_NONE, 1,
		V4L2_CAP_SLICED_VBI_CAPTURE | V4L2_CAP_READWRITE,
		&ivtv_v4l2_enc_fops
	},
	{	/* IVTV_DEC_STREAM_TYPE_VOUT */
		"decoder VOUT",
		VFL_TYPE_VBI, IVTV_V4L2_DEC_VOUT_OFFSET,
		PCI_DMA_NONE, 1,
		V4L2_CAP_SLICED_VBI_OUTPUT | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE,
		&ivtv_v4l2_dec_fops
	},
	{	/* IVTV_DEC_STREAM_TYPE_YUV */
		"decoder YUV",
		VFL_TYPE_GRABBER, IVTV_V4L2_DEC_YUV_OFFSET,
		PCI_DMA_TODEVICE, 0,
		V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE,
		&ivtv_v4l2_dec_fops
	}
};

static void ivtv_stream_init(struct ivtv *itv, int type)
{
	struct ivtv_stream *s = &itv->streams[type];
	struct video_device *vdev = s->vdev;

	/* we need to keep vdev, so restore it afterwards */
	memset(s, 0, sizeof(*s));
	s->vdev