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/*
* 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");
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