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/*
* sound/soc/tegra/tegra_harmony.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/module.h>
#include <linux/moduleparam.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/tlv.h>
#include <linux/clk.h>
#include <asm/mach-types.h>
#include <asm/hardware/scoop.h>
#include <linux/io.h>
#include "nvodm_query_discovery.h"
#include "../codecs/wm8903.h"
#include "../codecs/wm8753.h"
#include "tegra_transport.h"
static struct platform_device *tegra_snd_device;
NvU64 codec_guid;
#define NVODM_CODEC_MAX_CLOCKS 3
static unsigned int clock_frequencies[NVODM_CODEC_MAX_CLOCKS];
static int set_clock_source_on_codec(NvU64 codec_guid,int IsEnable)
{
const NvOdmPeripheralConnectivity *p_connectivity = NULL;
unsigned int clock_instances[NVODM_CODEC_MAX_CLOCKS];
unsigned int num_clocks;
p_connectivity = NvOdmPeripheralGetGuid(codec_guid);
if (p_connectivity == NULL)
return NV_FALSE;
if (IsEnable) {
if (!NvOdmExternalClockConfig(codec_guid, NV_FALSE,
clock_instances,
clock_frequencies, &num_clocks))
return NV_FALSE;
} else {
if (!NvOdmExternalClockConfig(codec_guid,
NV_TRUE,
clock_instances,
clock_frequencies,
&num_clocks));
return NV_FALSE;
}
return NV_TRUE;
}
static int tegra_harmony_hifi_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
int err;
err = snd_soc_dai_set_fmt(codec_dai,
SND_SOC_DAIFMT_I2S | \
SND_SOC_DAIFMT_NB_IF | \
SND_SOC_DAIFMT_CBS_CFS);
if (err < 0) {
return err;
}
err = snd_soc_dai_set_sysclk(codec_dai,
0,
clock_frequencies[0]*1000,
SND_SOC_CLOCK_IN);
if (err<0) {
return err;
}
return 0;
}
static struct snd_soc_ops tegra_harmony_hifi_ops = {
.hw_params = tegra_harmony_hifi_hw_params,
};
static int tegra_wm8903_init(struct snd_soc_codec *codec)
{
return 0;
}
extern struct snd_soc_dai tegra_i2s_rpc_dai;
extern struct snd_soc_platform tegra_soc_platform;
static struct snd_soc_dai_link tegra_harmony_dai = {
/* Hifi Playback - for similatious use with voice below */
.name = "WM8903",
.stream_name = "WM8903 HiFi",
.cpu_dai = &tegra_i2s_rpc_dai,
.codec_dai = &wm8903_dai,
.init = tegra_wm8903_init,
.ops = &tegra_harmony_hifi_ops,
};
static struct snd_soc_card tegra_harmony = {
.name = "tegra",
.platform = &tegra_soc_platform,
.dai_link = &tegra_harmony_dai,
.num_links = 1,
};
struct harmony_setup_data {
int i2c_bus;
unsigned short i2c_address;
};
static struct snd_soc_device tegra_harmony_snd_devdata = {
.card = &tegra_harmony,
.codec_dev = &soc_codec_dev_wm8903,
};
static int __init tegra_soc_init(void)
{
int ret;
tegra_snd_device = platform_device_alloc("soc-audio", -1);
if (!tegra_snd_device)
return -ENOMEM;
codec_guid = NV_ODM_GUID('w','o','l','f','8','9','0','3');
platform_set_drvdata(tegra_snd_device, &tegra_harmony_snd_devdata);
tegra_harmony_snd_devdata.dev = &tegra_snd_device->dev;
ret = platform_device_add(tegra_snd_device);
if (ret) {
snd_printk(KERN_ERR "tegra audio device could not be added \n");
platform_device_put(tegra_snd_device);
return ret;
}
set_clock_source_on_codec(codec_guid,NV_TRUE);
if (ret != 0)
platform_device_unregister(tegra_snd_device);
return ret;
}
static void __exit tegra_soc_exit(void)
{
set_clock_source_on_codec(codec_guid,0);
platform_device_unregister(tegra_snd_device);
}
module_init(tegra_soc_init);
module_exit(tegra_soc_exit);
/* Module information */
MODULE_DESCRIPTION("Tegra SoC Sound");
MODULE_LICENSE("GPL");
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