V4L/DVB: cx18-alsa: Add non-working cx18-alsa-pcm.[ch] files to avoid data loss

/*

 *  ALSA PCM device for the

 *  ALSA interface to cx18 PCM capture streams

 *

 *  Copyright (C) 2009  Andy Walls <awalls@radix.net>

 *

 *  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

 */

#include <linux/init.h>

#include <linux/kernel.h>

#include <media/v4l2-device.h>

#include <sound/core.h>

#include <sound/pcm.h>

#include "cx18-driver.h"

#include "cx18-alsa.h"

static int snd_cx18_pcm_capture_open(struct snd_pcm_substream *substream)

{

	struct snd_cx18_card *cxsc = snd_pcm_substream_chip(substream);

	struct snd_pcm_runtime *runtime = substream->runtime;

	struct v4l2_device *v4l2_dev = cxsc->v4l2_dev;

	struct snd_card *sc = cxsc->sc;

	struct cx18 *cx = to_cx18(v4l2_dev);

	return 0;

}

static int snd_cx18_pcm_capture_close(struct snd_pcm_substream *substream)

{

	return 0;

}

static int snd_cx18_pcm_ioctl(struct snd_pcm_substream *substream,

		     unsigned int cmd, void *arg)

{

	return snd_pcm_lib_ioctl(substream, cmd, arg);

}

static int snd_cx18_pcm_hw_params(struct snd_pcm_substream *substream,

			 struct snd_pcm_hw_params *params)

{

	return 0;

}

static int snd_cx18_pcm_hw_free(struct snd_pcm_substream *substream)

{

	return 0;

}

static int snd_cx18_pcm_prepare(struct snd_pcm_substream *substream)

{

	return 0;

}

static int snd_cx18_pcm_trigger(struct snd_pcm_substream *substream, int cmd)

{

	return 0;

}

static

snd_pcm_uframes_t snd_cx18_pcm_pointer(struct snd_pcm_substream *substream)

{

	return 0;

}

static struct snd_pcm_ops snd_cx18_pcm_capture_ops = {

	.open		= snd_cx18_pcm_capture_open,

	.close		= snd_cx18_pcm_capture_close,

	.ioctl		= snd_cx18_pcm_ioctl,

	.hw_params	= snd_cx18_pcm_hw_params,

	.hw_free	= snd_cx18_pcm_hw_free,

	.prepare	= snd_cx18_pcm_prepare,

	.trigger	= snd_cx18_pcm_trigger,

	.pointer	= snd_cx18_pcm_pointer,

};

int __init snd_cx18_pcm_create(struct snd_cx18_card *cxsc)

{

	struct snd_pcm *sp;

	struct snd_card *sc = cxsc->sc;

	struct v4l2_device *v4l2_dev = cxsc->v4l2_dev;

	struct cx18 *cx = to_cx18(v4l2_dev);

	int ret;

	ret = snd_pcm_new(sc, "CX23418 PCM",

			  0, /* PCM device 0, the only one for this card */

			  0, /* 0 playback substreams */

			  1, /* 1 capture substream */

			  &sp);

	if (ret) {

		CX18_ALSA_ERR("%s: snd_cx18_pcm_create() failed with err %d\n",

			      __func__, ret);

		goto err_exit;

	}

	return 0;

err_exit:

	return ret;

}

/*

 *  ALSA PCM device for the

 *  ALSA interface to cx18 PCM capture streams

 *

 *  Copyright (C) 2009  Andy Walls <awalls@radix.net>

 *

 *  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

 */

int __init snd_cx18_pcm_create(struct snd_cx18_card *cxsc);