1 files changed, 107 insertions, 0 deletions
diff --git a/sound/soc/tegra/tegra_i2s.c b/sound/soc/tegra/tegra_i2s.c
new file mode 100644
index 000000000000..6e672347ae5e
--- /dev/null
+++ b/sound/soc/tegra/tegra_i2s.c
@@ -0,0 +1,107 @@
+/*
+ * sound/soc/tegra/tegra_i2s.c
+ *
+ * ALSA SOC driver for NVIDIA Tegra SoCs
+ *
+ * Copyright (C) 2010 NVIDIA Corporation
+ *
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/delay.h>
+#include <linux/clk.h>
+#include <linux/jiffies.h>
+#include <linux/io.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/initval.h>
+#include <sound/soc.h>
+
+#include "mach/nvrm_linux.h"
+#include "nvrm_memmgr.h"
+#include "nvassert.h"
+
+#include "tegra_transport.h"
+
+extern struct snd_soc_dai tegra_i2s_rpc_dai;
+
+static int tegra_i2s_rpc_hw_params(struct snd_pcm_substream *substream,
+				   struct snd_pcm_hw_params *params,
+				   struct snd_soc_dai *dai)
+{
+	switch (params_rate(params)) {
+	case 8000:
+	case 32000:
+	case 44100:
+	case 48000:
+	case 88200:
+	case 96000:
+		return 0;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int tegra_i2s_rpc_probe(struct platform_device *pdev,
+			       struct snd_soc_dai *dai)
+{
+	return 0;
+}
+
+#define TEGRA_I2S_RATES (SNDRV_PCM_RATE_8000_96000)
+
+struct snd_soc_dai tegra_i2s_rpc_dai = {
+	.name = "tegra-i2s-rpc",
+	.id = 0,
+	.probe = tegra_i2s_rpc_probe,
+	.playback = {
+	.channels_min = 1,
+	.channels_max = 2,
+	.rates = TEGRA_I2S_RATES,
+	.formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 | \
+		   SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE | \
+		   SNDRV_PCM_FMTBIT_S32_LE,},
+	.capture = {
+	.channels_min = 1,
+	.channels_max = 2,
+	.rates = TEGRA_I2S_RATES,
+	.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE |\
+		   SNDRV_PCM_FMTBIT_S32_LE,},
+	.ops = {
+	.hw_params = tegra_i2s_rpc_hw_params,
+	},
+};
+EXPORT_SYMBOL_GPL(tegra_i2s_rpc_dai);
+
+static int __init tegra_i2s_rpc_init(void)
+{
+	return snd_soc_register_dai(&tegra_i2s_rpc_dai);
+}
+module_init(tegra_i2s_rpc_init);
+
+static void __exit tegra_i2s_rpc_exit(void)
+{
+	snd_soc_unregister_dai(&tegra_i2s_rpc_dai);
+}
+module_exit(tegra_i2s_rpc_exit);
+
+/* Module information */
+MODULE_DESCRIPTION("Tegra I2S RPC Interface");
+MODULE_LICENSE("GPL");