![Vladimir Barinov](/assets/img/avatar_default.png)
Add ASoC support for the TI Davinci SoC and the Davicni-EVM reference board. It includes: - ASoC Davinci DMA driver - ASoC Davinci I2S (Davinci McBSP module based) driver - ASoC Davinci-EVM reference board Signed-off-by: Vladimir Barinov <vbarinov@ru.mvista.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
209 lines
5.3 KiB
C
209 lines
5.3 KiB
C
/*
|
|
* ASoC driver for TI DAVINCI EVM platform
|
|
*
|
|
* Author: Vladimir Barinov, <vbarinov@ru.mvista.com>
|
|
* Copyright: (C) 2007 MontaVista Software, Inc., <source@mvista.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/moduleparam.h>
|
|
#include <linux/timer.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/platform_device.h>
|
|
#include <sound/core.h>
|
|
#include <sound/pcm.h>
|
|
#include <sound/soc.h>
|
|
#include <sound/soc-dapm.h>
|
|
|
|
#include <asm/mach-types.h>
|
|
#include <asm/dma.h>
|
|
#include <asm/arch/hardware.h>
|
|
|
|
#include "../codecs/tlv320aic3x.h"
|
|
#include "davinci-pcm.h"
|
|
#include "davinci-i2s.h"
|
|
|
|
#define EVM_CODEC_CLOCK 22579200
|
|
|
|
static int evm_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_codec_dai *codec_dai = rtd->dai->codec_dai;
|
|
struct snd_soc_cpu_dai *cpu_dai = rtd->dai->cpu_dai;
|
|
int ret = 0;
|
|
|
|
/* set codec DAI configuration */
|
|
ret = codec_dai->dai_ops.set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
|
|
SND_SOC_DAIFMT_CBM_CFM);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* set cpu DAI configuration */
|
|
ret = cpu_dai->dai_ops.set_fmt(cpu_dai, SND_SOC_DAIFMT_CBM_CFM |
|
|
SND_SOC_DAIFMT_IB_NF);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* set the codec system clock */
|
|
ret = codec_dai->dai_ops.set_sysclk(codec_dai, 0, EVM_CODEC_CLOCK,
|
|
SND_SOC_CLOCK_OUT);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct snd_soc_ops evm_ops = {
|
|
.hw_params = evm_hw_params,
|
|
};
|
|
|
|
/* davinci-evm machine dapm widgets */
|
|
static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = {
|
|
SND_SOC_DAPM_HP("Headphone Jack", NULL),
|
|
SND_SOC_DAPM_LINE("Line Out", NULL),
|
|
SND_SOC_DAPM_MIC("Mic Jack", NULL),
|
|
SND_SOC_DAPM_LINE("Line In", NULL),
|
|
};
|
|
|
|
/* davinci-evm machine audio_mapnections to the codec pins */
|
|
static const char *audio_map[][3] = {
|
|
/* Headphone connected to HPLOUT, HPROUT */
|
|
{"Headphone Jack", NULL, "HPLOUT"},
|
|
{"Headphone Jack", NULL, "HPROUT"},
|
|
|
|
/* Line Out connected to LLOUT, RLOUT */
|
|
{"Line Out", NULL, "LLOUT"},
|
|
{"Line Out", NULL, "RLOUT"},
|
|
|
|
/* Mic connected to (MIC3L | MIC3R) */
|
|
{"MIC3L", NULL, "Mic Bias 2V"},
|
|
{"MIC3R", NULL, "Mic Bias 2V"},
|
|
{"Mic Bias 2V", NULL, "Mic Jack"},
|
|
|
|
/* Line In connected to (LINE1L | LINE2L), (LINE1R | LINE2R) */
|
|
{"LINE1L", NULL, "Line In"},
|
|
{"LINE2L", NULL, "Line In"},
|
|
{"LINE1R", NULL, "Line In"},
|
|
{"LINE2R", NULL, "Line In"},
|
|
|
|
{NULL, NULL, NULL},
|
|
};
|
|
|
|
/* Logic for a aic3x as connected on a davinci-evm */
|
|
static int evm_aic3x_init(struct snd_soc_codec *codec)
|
|
{
|
|
int i;
|
|
|
|
/* Add davinci-evm specific widgets */
|
|
for (i = 0; i < ARRAY_SIZE(aic3x_dapm_widgets); i++)
|
|
snd_soc_dapm_new_control(codec, &aic3x_dapm_widgets[i]);
|
|
|
|
/* Set up davinci-evm specific audio path audio_map */
|
|
for (i = 0; audio_map[i][0] != NULL; i++)
|
|
snd_soc_dapm_connect_input(codec, audio_map[i][0],
|
|
audio_map[i][1], audio_map[i][2]);
|
|
|
|
/* not connected */
|
|
snd_soc_dapm_set_endpoint(codec, "MONO_LOUT", 0);
|
|
snd_soc_dapm_set_endpoint(codec, "HPLCOM", 0);
|
|
snd_soc_dapm_set_endpoint(codec, "HPRCOM", 0);
|
|
|
|
/* always connected */
|
|
snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 1);
|
|
snd_soc_dapm_set_endpoint(codec, "Line Out", 1);
|
|
snd_soc_dapm_set_endpoint(codec, "Mic Jack", 1);
|
|
snd_soc_dapm_set_endpoint(codec, "Line In", 1);
|
|
|
|
snd_soc_dapm_sync_endpoints(codec);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* davinci-evm digital audio interface glue - connects codec <--> CPU */
|
|
static struct snd_soc_dai_link evm_dai = {
|
|
.name = "TLV320AIC3X",
|
|
.stream_name = "AIC3X",
|
|
.cpu_dai = &davinci_i2s_dai,
|
|
.codec_dai = &aic3x_dai,
|
|
.init = evm_aic3x_init,
|
|
.ops = &evm_ops,
|
|
};
|
|
|
|
/* davinci-evm audio machine driver */
|
|
static struct snd_soc_machine snd_soc_machine_evm = {
|
|
.name = "DaVinci EVM",
|
|
.dai_link = &evm_dai,
|
|
.num_links = 1,
|
|
};
|
|
|
|
/* evm audio private data */
|
|
static struct aic3x_setup_data evm_aic3x_setup = {
|
|
.i2c_address = 0x1b,
|
|
};
|
|
|
|
/* evm audio subsystem */
|
|
static struct snd_soc_device evm_snd_devdata = {
|
|
.machine = &snd_soc_machine_evm,
|
|
.platform = &davinci_soc_platform,
|
|
.codec_dev = &soc_codec_dev_aic3x,
|
|
.codec_data = &evm_aic3x_setup,
|
|
};
|
|
|
|
static struct resource evm_snd_resources[] = {
|
|
{
|
|
.start = DAVINCI_MCBSP_BASE,
|
|
.end = DAVINCI_MCBSP_BASE + SZ_8K - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
};
|
|
|
|
static struct evm_snd_platform_data evm_snd_data = {
|
|
.tx_dma_ch = DM644X_DMACH_MCBSP_TX,
|
|
.rx_dma_ch = DM644X_DMACH_MCBSP_RX,
|
|
};
|
|
|
|
static struct platform_device *evm_snd_device;
|
|
|
|
static int __init evm_init(void)
|
|
{
|
|
int ret;
|
|
|
|
evm_snd_device = platform_device_alloc("soc-audio", 0);
|
|
if (!evm_snd_device)
|
|
return -ENOMEM;
|
|
|
|
platform_set_drvdata(evm_snd_device, &evm_snd_devdata);
|
|
evm_snd_devdata.dev = &evm_snd_device->dev;
|
|
evm_snd_device->dev.platform_data = &evm_snd_data;
|
|
|
|
ret = platform_device_add_resources(evm_snd_device, evm_snd_resources,
|
|
ARRAY_SIZE(evm_snd_resources));
|
|
if (ret) {
|
|
platform_device_put(evm_snd_device);
|
|
return ret;
|
|
}
|
|
|
|
ret = platform_device_add(evm_snd_device);
|
|
if (ret)
|
|
platform_device_put(evm_snd_device);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void __exit evm_exit(void)
|
|
{
|
|
platform_device_unregister(evm_snd_device);
|
|
}
|
|
|
|
module_init(evm_init);
|
|
module_exit(evm_exit);
|
|
|
|
MODULE_AUTHOR("Vladimir Barinov");
|
|
MODULE_DESCRIPTION("TI DAVINCI EVM ASoC driver");
|
|
MODULE_LICENSE("GPL");
|