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/*
* 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;
}
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