Subject: [patch 6/6] kirkwood: Add audio support to openrd client platforms

From: [email-masked] (Mark Brown)
Date: Sun, 16 May 2010 18:32:30 +0100

On Sat, May 15, 2010 at 05:30:04PM +0200, apatard at mandriva.com wrote:
> This patch is adding support for openrd client platforms. It's using
> the cs42l51 codec and has one mic and one speaker plugs.
> 
> Signed-off-by: Arnaud Patard <[email-masked]>

This all looks OK - CCing in Liam (and obviously this depends on both
the CODEC and CPU drivers).

> Index: sound-2.6/sound/soc/orion/Kconfig
> ===================================================================
> --- sound-2.6.orig/sound/soc/orion/Kconfig	2010-05-15 17:06:16.890586343 +0200
> +++ sound-2.6/sound/soc/orion/Kconfig	2010-05-15 17:07:30.990586832 +0200
> @@ -9,3 +9,12 @@ config SND_ORION_SOC
>  config SND_ORION_SOC_I2S
>  	tristate
>  
> +config SND_KIRKWOOD_SOC_OPENRD
> +	tristate "SoC Audio support for Kirkwood Openrd Client"
> +	depends on SND_ORION_SOC && MACH_OPENRD_CLIENT
> +	select SND_ORION_SOC_I2S
> +	select SND_SOC_CS42L51
> +	help
> +	  Say Y if you want to add support for SoC audio on
> +	  Openrd Client.
> +
> Index: sound-2.6/sound/soc/orion/Makefile
> ===================================================================
> --- sound-2.6.orig/sound/soc/orion/Makefile	2010-05-15 17:06:16.962086209 +0200
> +++ sound-2.6/sound/soc/orion/Makefile	2010-05-15 17:07:31.006586283 +0200
> @@ -4,3 +4,6 @@ snd-soc-orion-i2s-objs := orion-i2s.o
>  obj-$(CONFIG_SND_ORION_SOC) += snd-soc-orion.o
>  obj-$(CONFIG_SND_ORION_SOC_I2S) += snd-soc-orion-i2s.o
>  
> +snd-soc-openrd-objs := kirkwood-openrd.o
> +
> +obj-$(CONFIG_SND_KIRKWOOD_SOC_OPENRD) += snd-soc-openrd.o
> Index: sound-2.6/sound/soc/orion/kirkwood-openrd.c
> ===================================================================
> --- /dev/null	1970-01-01 00:00:00.000000000 +0000
> +++ sound-2.6/sound/soc/orion/kirkwood-openrd.c	2010-05-15 17:07:31.046586004 +0200
> @@ -0,0 +1,126 @@
> +/*
> + * kirkwood-openrd.c
> + *
> + * (c) 2010 Arnaud Patard <[email-masked]>
> + *
> + *  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.
> + */
> +
> +#include <linux/module.h>
> +#include <linux/moduleparam.h>
> +#include <linux/interrupt.h>
> +#include <linux/platform_device.h>
> +#include <linux/slab.h>
> +#include <sound/soc.h>
> +#include <mach/kirkwood.h>
> +#include <plat/audio.h>
> +#include <asm/mach-types.h>
> +#include "orion-i2s.h"
> +#include "orion-dma.h"
> +#include "../codecs/cs42l51.h"
> +
> +static int openrd_client_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;
> +	struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
> +	int ret;
> +	unsigned int freq, fmt;
> +
> +	fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBM_CFM;
> +	ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
> +	if (ret < 0)
> +		return ret;
> +
> +	ret = snd_soc_dai_set_fmt(codec_dai, fmt);
> +	if (ret < 0)
> +		return ret;
> +
> +	switch (params_rate(params)) {
> +	default:
> +	case 44100:
> +		freq = 11289600;
> +		break;
> +	case 48000:
> +		freq = 12288000;
> +		break;
> +	case 96000:
> +		freq = 24576000;
> +		break;
> +	}
> +
> +	return snd_soc_dai_set_sysclk(codec_dai, 0, freq, SND_SOC_CLOCK_IN);
> +
> +}
> +
> +static struct snd_soc_ops openrd_client_ops = {
> +	.hw_params = openrd_client_hw_params,
> +};
> +
> +
> +static struct snd_soc_dai_link openrd_client_dai[] = {
> +{
> +	.name = "CS42L51",
> +	.stream_name = "CS42L51 HiFi",
> +	.cpu_dai = &orion_i2s_dai,
> +	.codec_dai = &cs42l51_dai,
> +	.ops = &openrd_client_ops,
> +},
> +};
> +
> +
> +static struct snd_soc_card openrd_client = {
> +	.name = "OpenRD Client",
> +	.platform = &orion_soc_platform,
> +	.dai_link = openrd_client_dai,
> +	.num_links = ARRAY_SIZE(openrd_client_dai),
> +};
> +
> +static struct snd_soc_device openrd_client_snd_devdata = {
> +	.card = &openrd_client,
> +	.codec_dev = &soc_codec_device_cs42l51,
> +};
> +
> +static struct platform_device *openrd_client_snd_device;
> +
> +static int __init openrd_client_init(void)
> +{
> +	int ret;
> +
> +	if (!machine_is_openrd_client())
> +		return 0;
> +
> +	openrd_client_snd_device = platform_device_alloc("soc-audio", -1);
> +	if (!openrd_client_snd_device)
> +		return -ENOMEM;
> +
> +	platform_set_drvdata(openrd_client_snd_device,
> +			&openrd_client_snd_devdata);
> +	openrd_client_snd_devdata.dev = &openrd_client_snd_device->dev;
> +
> +	ret = platform_device_add(openrd_client_snd_device);
> +	if (ret) {
> +		printk(KERN_ERR "%s: platform_device_add failed\n", __func__);
> +		platform_device_put(openrd_client_snd_device);
> +	}
> +
> +	return ret;
> +}
> +
> +static void __exit openrd_client_exit(void)
> +{
> +	platform_device_unregister(openrd_client_snd_device);
> +}
> +
> +module_init(openrd_client_init);
> +module_exit(openrd_client_exit);
> +
> +/* Module information */
> +MODULE_AUTHOR("Arnaud Patard <[email-masked]>");
> +MODULE_DESCRIPTION("ALSA SoC OpenRD Client");
> +MODULE_LICENSE("GPL");
> +MODULE_ALIAS("platform:soc-audio");
>