[alsa-devel] ASoC: BeagleBoard driver development (PCM3168)
wendelin klimann
wklimann at gmail.com
Sun Feb 10 22:50:37 CET 2013
hello
I try to implement an PCM3168 audio codec from TI to the BeagleBoard but
actually i am stuck and it would be rally nice if one could help me a
little bit.
My ALSA driver version is 1.0.24 and i use an 3.2.18 kernel.
As a startingpoint i used the files
*/linux-mainline-3.2.18-r121b/git/sound/soc/codecs/pcm3008.c*
*/linux-mainline-3.2.18-r121b/git/sound/soc/codecs/pcm3008.h*
The files (see end of e-mail)
*/linux-mainline-3.2.18-r121b/git/sound/soc/omap/pcm3168_soundcard.c
/linux-mainline-3.2.18-r121b/git/sound/soc/codecs/pcm3168.c
/linux-mainline-3.2.18-r121b/git/sound/soc/codecs/pcm3168.h*
could be compiled successfully and also the insmod loads the modules
*$: insmod
/lib/modules/3.2.18/kernel/sound/soc/omap/snd-soc-pcm3168_soundcard.ko*
*$: lsmod*
Module Size Used by
snd_soc_pcm3168 1886 0
snd_soc_pcm3168_soundcard 2094 0
twl4
030_madc_hwmon 2569 0
snd_soc_omap3beagle 2239 0
rtc_twl 4382 0
snd_soc_twl4030 37616 1
rtc_ds1307 6642 0
snd_soc_omap 3521 1
snd_soc_omap_mcbsp 8374 1
snd_soc_core 107346 6
snd_soc_pcm3168,snd_soc_pcm3168_soundcard,snd_soc_omap3beagle,snd_soc_twl4030,snd_soc_omap,snd_soc_omap_mcbsp
regmap_spi 1263 1 snd_soc_core
snd_pcm 78039 4
snd_soc_twl4030,snd_soc_omap,snd_soc_omap_mcbsp,snd_soc_core
snd_timer 18848 1 snd_pcm
snd 57930 3 snd_soc_core,snd_pcm,snd_timer
soundcore 6954 1 snd
iptable_nat 3819 0
snd_page_alloc 4979 1 snd_pcm
nf_nat 16515 1 iptable_nat
nf_conntrack_ipv4 12018 3 iptable_nat,nf_nat
nf_conntrack 71219 3 iptable_nat,nf_nat,nf_conntrack_ipv4
nf_defrag_ipv4 1379 1 nf_conntrack_ipv4
ip_tables 10537 1 iptable_nat
x_tables 16505 2 iptable_nat,ip_tables
gpio_keys 7117 0
autofs4 20492 2
but the new ALSA device is not recognized
*$:aplay -l*
**** List of PLAYBACK Hardware Devices ****
card 0: omap3beagle [omap3beagle], device 0: TWL4030 twl4030-hifi-0 []
Subdevices
: 1/1
Subdevice #0: subdevice #0
So i tried to get some information in
*$: cd /sys/kernel/debug/asoc*
*/sys/kernel/debug/asoc$: ls*
codecs dais omap3beagle pcm3168 platforms
*/sys/kernel/debug/asoc$: cat codecs*
pcm3168-codec.0
twl4030-codec
*/sys/kernel/debug/asoc$: cat dais*
pcm3168-hifi
twl4030-voice
twl4030-hifi
omap-mcbsp-dai.4
omap-mcbsp-dai.3
omap-mcbsp-dai.2
omap-mcbsp-dai.1
omap-mcbsp-dai.0
*/sys/kernel/debug/asoc$: cat platforms*
omap-pcm-audio
snd-soc-dummy
*/sys/kernel/debug/asoc$:cd omap3beagle*
*/sys/kernel/debug/asoc/omap3beagle$:ls*
dapm dapm_pop_time twl4030-codec
*/sys/kernel/debug/asoc/omap3beagle$:cd /sys/kernel/debug/asoc/pcm3168*
*/sys/kernel/debug/asoc/pcm3168$: ls*
dapm_pop_time
At this point i have no idea how to solve the problem or how to debug
further and i would be very grateful for any hint.
Thanks a lot
Wendelin
*
***********************************************************************************************
*
/linux-mainline-3.2.18-r121b/git/sound/soc/omap/pcm3168_soundcard.c
*
**
***********************************************************************************************
*/*
* PCM3168 ASoC driver for BeagleBoard.
*
* Author: Hugo Villeneuve
* Copyright (C) 2008 Lyrtech inc
*
* adapted by Klimann Wendelin <wklimann at hotmail.com>
*
*
* Based on ASoC driver for TI DAVINCI EVM platform, original copyright
follow:
* Copyright: (C) 2007 MontaVista Software, Inc., <source at 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/clk.h>
#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <asm/mach-types.h>
//#include <asm/dma.h>
#include <mach/hardware.h>
#include <mach/gpio.h>
//#include <mach/edma.h>
#include <plat/mcbsp.h>
#include "omap-mcbsp.h"
#include "omap-pcm.h"
#include "../codecs/pcm3168.h"
/*
* CLKX and CLKR are the inputs for the Sample Rate Generator.
* FSX and FSR are outputs, driven by the sample Rate Generator.
*/
/*
* SND_SOC_DAIFMT_CBS_CFS
* for codec in slave mode
*/
#define AUDIO_FORMAT (SND_SOC_DAIFMT_DSP_B | \
SND_SOC_DAIFMT_CBM_CFM | \
SND_SOC_DAIFMT_IB_NF)
static int pcm3168_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 *cpu_dai = rtd->cpu_dai;
int fs;
int ret = 0;
printk("in hw_params -> by kli");
/* Fsref can be 8000 to 96000. */
fs = params_rate(params);
/* set cpu DAI configuration */
ret = snd_soc_dai_set_fmt(cpu_dai, AUDIO_FORMAT);
if (ret < 0) {
printk(KERN_ERR "can't set cpu DAI configuration\n");
return ret;
}
pr_debug("pcm3168_hw_params: rate = %d Hz\n", fs);
return 0;
}
static struct snd_soc_ops pcm3168_ops = {
.hw_params = pcm3168_hw_params,
};
/* omap-pcm3168 digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link pcm3168_dai = {
.name = "PCM3168", /* Codec name */
.stream_name = "PCM3168",
.cpu_dai_name = "omap-mcbsp-dai.2",
.codec_dai_name = "pcm3168-hifi",
.codec_name = "pcm3168-codec",
.platform_name = "omap-pcm-audio",
.ops = &pcm3168_ops,
};
/* omap-pcm3168 audio machine driver */
static struct snd_soc_card snd_soc_pcm3168 = {
.name = "pcm3168", // -> "OMAP pcm3168"
.owner = THIS_MODULE,
.dai_link = &pcm3168_dai,
.num_links = 1,
};
/* pcm3168 audio private data */
static struct pcm3168_setup_data pcm3168_pcm3168_setup = {
// .dem0_pin = GPIO(45),
// .dem1_pin = GPIO(46),
// .pdad_pin = GPIO(47),
// .pdda_pin = GPIO(38),
};
struct platform_device pcm3168_codec = {
.name = "pcm3168-codec",
.id = 0,
.dev = {
.platform_data = &pcm3168_pcm3168_setup,
},
};
static struct platform_device *pcm3168_snd_device;
static int __init pcm3168_init(void)
{
int ret;
printk(KERN_ALERT "in init soundcard \n");
if (!(machine_is_omap3_beagle()))
return -ENODEV;
platform_device_register(&pcm3168_codec);
pcm3168_snd_device = platform_device_alloc("soc-audio", 0);
if (!pcm3168_snd_device) {
printk(KERN_ERR "platform device allocation failed\n");
return -ENOMEM;
}
platform_set_drvdata(pcm3168_snd_device, &snd_soc_pcm3168);
// platform_device_add_data(pcm3168_snd_device, &pcm3168_snd_data,
// sizeof(pcm3168_snd_data));
/* ret = platform_device_add_resources(pcm3168_snd_device,
pcm3168_snd_resources,
ARRAY_SIZE(pcm3168_snd_resources));
if (ret) {
printk(KERN_ERR "platform device add resources failed\n");
goto error;
}
*/
ret = platform_device_add(pcm3168_snd_device);
if (ret)
goto error;
return ret;
error:
platform_device_put(pcm3168_snd_device);
return ret;
}
static void __exit pcm3168_exit(void)
{
platform_device_unregister(pcm3168_snd_device);
platform_device_unregister(&pcm3168_codec);
}
module_init(pcm3168_init);
module_exit(pcm3168_exit);
MODULE_AUTHOR("Klimann Wendelin <wklimann at hotmail.com>");
MODULE_DESCRIPTION("PCM3168 Beagle ASoC driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:pcm3168-soc-audio");
*
***********************************************************************************************
*
/linux-mainline-3.2.18-r121b/git/sound/soc/codecs/pcm3168.c
*
**
***********************************************************************************************
*/*
* ALSA Soc PCM3168 codec support
*
* Author: Hugo Villeneuve
* Copyright (C) 2008 Lyrtech inc
*
* adapted by Klimann Wendelin
*
*
* Based on AC97 Soc codec, original copyright follow:
* Copyright 2005 Wolfson Microelectronics PLC.
*
* 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.
*
* Generic PCM3168 support.
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/gpio.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/clk.h>
#include <linux/platform_device.h>
#include <linux/module.h>
#include <sound/core.h>
#include <sound/initval.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
//#include <sound/soc-dapm.h>
#include <sound/soc.h>
#include <asm/mach-types.h>
#include <mach/hardware.h>
#include <mach/gpio.h>
#include <plat/mcbsp.h>
#include "../omap/omap-mcbsp.h"
#include "../omap/omap-pcm.h"
#include "pcm3168.h"
#define PCM3168_VERSION "0.1"
#define PCM3168_RATES SNDRV_PCM_RATE_8000_96000 /*(SNDRV_PCM_RATE_32000 |
SNDRV_PCM_RATE_44100 | \
SNDRV_PCM_RATE_48000)*/
static struct snd_soc_dai_driver pcm3168_dai = {
.name = "pcm3168-hifi",
.playback = {
.stream_name = "PCM3168 Playback",
.channels_min = 2,
.channels_max = 8,
.rates = PCM3168_RATES,
.formats = SNDRV_PCM_FMTBIT_S16_LE, //SNDRV_PCM_FMTBIT_S32_LE
},
.capture = {
.stream_name = "PCM3168 Capture",
.channels_min = 2,
.channels_max = 6,
.rates = PCM3168_RATES,
.formats = SNDRV_PCM_FMTBIT_S16_LE, //SNDRV_PCM_FMTBIT_S32_LE
},
};
static void pcm3168_gpio_free(struct pcm3168_setup_data *setup)
{
// gpio_free(setup->dem0_pin);
// gpio_free(setup->dem1_pin);
// gpio_free(setup->pdad_pin);
// gpio_free(setup->pdda_pin);
}
static int pcm3168_soc_probe(struct snd_soc_codec *codec)
{
struct pcm3168_setup_data *setup = codec->dev->platform_data;
int ret = 0;
printk(KERN_ALERT "in SOC Probe -> kli \n");
printk(KERN_INFO "PCM3168 SoC Audio Codec %s\n", PCM3168_VERSION);
return ret;
gpio_err:
// pcm3168_gpio_free(setup);
return ret;
}
static int pcm3168_soc_remove(struct snd_soc_codec *codec)
{
struct pcm3168_setup_data *setup = codec->dev->platform_data;
// pcm3168_gpio_free(setup);
return 0;
}
#define pcm3168_soc_suspend NULL
#define pcm3168_soc_resume NULL
static struct snd_soc_codec_driver soc_codec_dev_pcm3168 = {
.probe = pcm3168_soc_probe,
.remove = pcm3168_soc_remove,
.suspend = pcm3168_soc_suspend,
.resume = pcm3168_soc_resume,
};
static int __devinit pcm3168_codec_probe(struct platform_device *pdev)
{
int ret;
printk(KERN_ALERT "probe pcm3168 -> kli \n");
ret = snd_soc_register_codec(&pdev->dev,
&soc_codec_dev_pcm3168, &pcm3168_dai, 1);
printk(KERN_ALERT "probe_after pcm3168 -> kli = %d \n", ret);
return ret;
}
static int __devexit pcm3168_codec_remove(struct platform_device *pdev)
{
printk(KERN_ALERT "remove pcm3168 -> kli \n");
snd_soc_unregister_codec(&pdev->dev);
return 0;
}
MODULE_ALIAS("platform:pcm3168-codec");
static struct platform_driver pcm3168_codec_driver = {
.probe = pcm3168_codec_probe,
.remove = __devexit_p(pcm3168_codec_remove),
.driver = {
.name = "pcm3168-codec",
.owner = THIS_MODULE,
},
};
static int __init pcm3168_modinit(void)
{
printk(KERN_ALERT "in init of 3168 -> kli \n");
return platform_driver_register(&pcm3168_codec_driver);
}
module_init(pcm3168_modinit);
static void __exit pcm3168_exit(void)
{
printk(KERN_ALERT "in exit of 3168 -> kli \n");
platform_driver_unregister(&pcm3168_codec_driver);
}
module_exit(pcm3168_exit);
MODULE_DESCRIPTION("Soc PCM3168 driver");
MODULE_AUTHOR("Klimann Wendelin <wklimann at hotmail.com>");
MODULE_LICENSE("GPL");
*
***********************************************************************************************
*
/linux-mainline-3.2.18-r121b/git/sound/soc/codecs/pcm3168.h
*
***********************************************************************************************
*
/*
* PCM3168 ALSA SoC Layer
*
* Author: Hugo Villeneuve
* Copyright (C) 2008 Lyrtech inc
*
* adapted by Klimann Wendelin <wklimann at hotmail.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.
*/
#ifndef __LINUX_SND_SOC_PCM3168_2_H
#define __LINUX_SND_SOC_PCM3168_2_H
struct pcm3168_setup_data {
// unsigned dem0_pin;
// unsigned dem1_pin;
// unsigned pdad_pin;
// unsigned pdda_pin;
};
#endif
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