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@@ -0,0 +1,115 @@
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+/*
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+ * ALSA PCM device for the
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+ * ALSA interface to cx18 PCM capture streams
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+ *
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+ * Copyright (C) 2009 Andy Walls <awalls@radix.net>
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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., 59 Temple Place, Suite 330, Boston, MA
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+ * 02111-1307 USA
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+ */
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+
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+#include <linux/init.h>
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+#include <linux/kernel.h>
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+
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+#include <media/v4l2-device.h>
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+
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+#include <sound/core.h>
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+#include <sound/pcm.h>
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+
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+#include "cx18-driver.h"
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+#include "cx18-alsa.h"
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+
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+static int snd_cx18_pcm_capture_open(struct snd_pcm_substream *substream)
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+{
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+ struct snd_cx18_card *cxsc = snd_pcm_substream_chip(substream);
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+ struct snd_pcm_runtime *runtime = substream->runtime;
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+ struct v4l2_device *v4l2_dev = cxsc->v4l2_dev;
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+ struct snd_card *sc = cxsc->sc;
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+ struct cx18 *cx = to_cx18(v4l2_dev);
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+ return 0;
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+}
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+
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+static int snd_cx18_pcm_capture_close(struct snd_pcm_substream *substream)
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+{
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+ return 0;
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+}
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+
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+static int snd_cx18_pcm_ioctl(struct snd_pcm_substream *substream,
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+ unsigned int cmd, void *arg)
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+{
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+ return snd_pcm_lib_ioctl(substream, cmd, arg);
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+}
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+
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+static int snd_cx18_pcm_hw_params(struct snd_pcm_substream *substream,
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+ struct snd_pcm_hw_params *params)
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+{
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+ return 0;
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+}
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+
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+static int snd_cx18_pcm_hw_free(struct snd_pcm_substream *substream)
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+{
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+ return 0;
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+}
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+
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+static int snd_cx18_pcm_prepare(struct snd_pcm_substream *substream)
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+{
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+ return 0;
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+}
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+
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+static int snd_cx18_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
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+{
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+ return 0;
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+}
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+
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+static
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+snd_pcm_uframes_t snd_cx18_pcm_pointer(struct snd_pcm_substream *substream)
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+{
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+ return 0;
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+}
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+
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+static struct snd_pcm_ops snd_cx18_pcm_capture_ops = {
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+ .open = snd_cx18_pcm_capture_open,
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+ .close = snd_cx18_pcm_capture_close,
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+ .ioctl = snd_cx18_pcm_ioctl,
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+ .hw_params = snd_cx18_pcm_hw_params,
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+ .hw_free = snd_cx18_pcm_hw_free,
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+ .prepare = snd_cx18_pcm_prepare,
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+ .trigger = snd_cx18_pcm_trigger,
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+ .pointer = snd_cx18_pcm_pointer,
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+};
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+
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+int __init snd_cx18_pcm_create(struct snd_cx18_card *cxsc)
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+{
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+ struct snd_pcm *sp;
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+ struct snd_card *sc = cxsc->sc;
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+ struct v4l2_device *v4l2_dev = cxsc->v4l2_dev;
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+ struct cx18 *cx = to_cx18(v4l2_dev);
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+ int ret;
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+
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+ ret = snd_pcm_new(sc, "CX23418 PCM",
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+ 0, /* PCM device 0, the only one for this card */
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+ 0, /* 0 playback substreams */
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+ 1, /* 1 capture substream */
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+ &sp);
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+ if (ret) {
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+ CX18_ALSA_ERR("%s: snd_cx18_pcm_create() failed with err %d\n",
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+ __func__, ret);
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+ goto err_exit;
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+ }
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+ return 0;
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+
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+err_exit:
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+ return ret;
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+}
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Andy Walls