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/*
* am3517evm.c -- ALSA SoC support for OMAP3517 / AM3517 EVM
*
* Author: Anuj Aggarwal <anuj.aggarwal@ti.com>
*
* Based on sound/soc/omap/beagle.c by Steve Sakoman
*
* Copyright (C) 2009 Texas Instruments Incorporated
*
* 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 version 2.
*
* This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
* whether express or implied; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*/
#include <linux/clk.h>
#include <linux/platform_device.h>
#include <linux/module.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <asm/mach-types.h>
#include <mach/hardware.h>
#include <mach/gpio.h>
#include <plat/mcbsp.h>
#include "omap-mcbsp.h"
#include "omap-pcm.h"
#include "../codecs/tlv320aic23.h"
#define CODEC_CLOCK 12000000
static int am3517evm_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->codec_dai;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
int ret;
/* Set the codec system clock for DAC and ADC */
ret = snd_soc_dai_set_sysclk(codec_dai, 0,
CODEC_CLOCK, SND_SOC_CLOCK_IN);
if (ret < 0) {
printk(KERN_ERR "can't set codec system clock\n");
return ret;
}
ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_CLKR_SRC_CLKX, 0,
SND_SOC_CLOCK_IN);
if (ret < 0) {
printk(KERN_ERR "can't set CPU system clock OMAP_MCBSP_CLKR_SRC_CLKX\n");
return ret;
}
snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_FSR_SRC_FSX, 0,
SND_SOC_CLOCK_IN);
if (ret < 0) {
printk(KERN_ERR "can't set CPU system clock OMAP_MCBSP_FSR_SRC_FSX\n");
return ret;
}
return 0;
}
static struct snd_soc_ops am3517evm_ops = {
.hw_params = am3517evm_hw_params,
};
/* am3517evm machine dapm widgets */
static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
SND_SOC_DAPM_HP("Line Out", NULL),
SND_SOC_DAPM_LINE("Line In", NULL),
SND_SOC_DAPM_MIC("Mic In", NULL),
};
static const struct snd_soc_dapm_route audio_map[] = {
/* Line Out connected to LLOUT, RLOUT */
{"Line Out", NULL, "LOUT"},
{"Line Out", NULL, "ROUT"},
{"LLINEIN", NULL, "Line In"},
{"RLINEIN", NULL, "Line In"},
{"MICIN", NULL, "Mic In"},
};
/* Digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link am3517evm_dai = {
.name = "TLV320AIC23",
.stream_name = "AIC23",
.cpu_dai_name = "omap-mcbsp.1",
.codec_dai_name = "tlv320aic23-hifi",
.platform_name = "omap-pcm-audio",
.codec_name = "tlv320aic23-codec.2-001a",
.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBM_CFM,
.ops = &am3517evm_ops,
};
/* Audio machine driver */
static struct snd_soc_card snd_soc_am3517evm = {
.name = "am3517evm",
.owner = THIS_MODULE,
.dai_link = &am3517evm_dai,
.num_links = 1,
.dapm_widgets = tlv320aic23_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(tlv320aic23_dapm_widgets),
.dapm_routes = audio_map,
.num_dapm_routes = ARRAY_SIZE(audio_map),
};
static struct platform_device *am3517evm_snd_device;
static int __init am3517evm_soc_init(void)
{
int ret;
if (!machine_is_omap3517evm())
return -ENODEV;
pr_info("OMAP3517 / AM3517 EVM SoC init\n");
am3517evm_snd_device = platform_device_alloc("soc-audio", -1);
if (!am3517evm_snd_device) {
printk(KERN_ERR "Platform device allocation failed\n");
return -ENOMEM;
}
platform_set_drvdata(am3517evm_snd_device, &snd_soc_am3517evm);
ret = platform_device_add(am3517evm_snd_device);
if (ret)
goto err1;
return 0;
err1:
printk(KERN_ERR "Unable to add platform device\n");
platform_device_put(am3517evm_snd_device);
return ret;
}
static void __exit am3517evm_soc_exit(void)
{
platform_device_unregister(am3517evm_snd_device);
}
module_init(am3517evm_soc_init);
module_exit(am3517evm_soc_exit);
MODULE_AUTHOR("Anuj Aggarwal <anuj.aggarwal@ti.com>");
MODULE_DESCRIPTION("ALSA SoC OMAP3517 / AM3517 EVM");
MODULE_LICENSE("GPL v2");
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