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Enric Balletbò i Serra
authored and
Mark Brown
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Nov 19, 2009
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refs/heads/master: 2b7b250df74f1f9e15cdf33fa90f6c98a419842d | ||
refs/heads/master: b2a2236d1f5e7c09c8e74b61f13d8ba3fe82f7be |
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/* | ||
* igep0020.c -- SoC audio for IGEP v2 | ||
* | ||
* Based on sound/soc/omap/overo.c by Steve Sakoman | ||
* | ||
* 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. | ||
* | ||
* 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 St, Fifth Floor, Boston, MA | ||
* 02110-1301 USA | ||
* | ||
*/ | ||
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#include <linux/clk.h> | ||
#include <linux/platform_device.h> | ||
#include <sound/core.h> | ||
#include <sound/pcm.h> | ||
#include <sound/soc.h> | ||
#include <sound/soc-dapm.h> | ||
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#include <asm/mach-types.h> | ||
#include <mach/hardware.h> | ||
#include <mach/gpio.h> | ||
#include <plat/mcbsp.h> | ||
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#include "omap-mcbsp.h" | ||
#include "omap-pcm.h" | ||
#include "../codecs/twl4030.h" | ||
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static int igep2_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; | ||
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/* Set codec DAI configuration */ | ||
ret = snd_soc_dai_set_fmt(codec_dai, | ||
SND_SOC_DAIFMT_I2S | | ||
SND_SOC_DAIFMT_NB_NF | | ||
SND_SOC_DAIFMT_CBM_CFM); | ||
if (ret < 0) { | ||
printk(KERN_ERR "can't set codec DAI configuration\n"); | ||
return ret; | ||
} | ||
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/* Set cpu DAI configuration */ | ||
ret = snd_soc_dai_set_fmt(cpu_dai, | ||
SND_SOC_DAIFMT_I2S | | ||
SND_SOC_DAIFMT_NB_NF | | ||
SND_SOC_DAIFMT_CBM_CFM); | ||
if (ret < 0) { | ||
printk(KERN_ERR "can't set cpu DAI configuration\n"); | ||
return ret; | ||
} | ||
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/* Set the codec system clock for DAC and ADC */ | ||
ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000, | ||
SND_SOC_CLOCK_IN); | ||
if (ret < 0) { | ||
printk(KERN_ERR "can't set codec system clock\n"); | ||
return ret; | ||
} | ||
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return 0; | ||
} | ||
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static struct snd_soc_ops igep2_ops = { | ||
.hw_params = igep2_hw_params, | ||
}; | ||
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/* Digital audio interface glue - connects codec <--> CPU */ | ||
static struct snd_soc_dai_link igep2_dai = { | ||
.name = "TWL4030", | ||
.stream_name = "TWL4030", | ||
.cpu_dai = &omap_mcbsp_dai[0], | ||
.codec_dai = &twl4030_dai[TWL4030_DAI_HIFI], | ||
.ops = &igep2_ops, | ||
}; | ||
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/* Audio machine driver */ | ||
static struct snd_soc_card snd_soc_card_igep2 = { | ||
.name = "igep2", | ||
.platform = &omap_soc_platform, | ||
.dai_link = &igep2_dai, | ||
.num_links = 1, | ||
}; | ||
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/* Audio subsystem */ | ||
static struct snd_soc_device igep2_snd_devdata = { | ||
.card = &snd_soc_card_igep2, | ||
.codec_dev = &soc_codec_dev_twl4030, | ||
}; | ||
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static struct platform_device *igep2_snd_device; | ||
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static int __init igep2_soc_init(void) | ||
{ | ||
int ret; | ||
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if (!machine_is_igep0020()) { | ||
pr_debug("Not IGEP v2!\n"); | ||
return -ENODEV; | ||
} | ||
printk(KERN_INFO "IGEP v2 SoC init\n"); | ||
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igep2_snd_device = platform_device_alloc("soc-audio", -1); | ||
if (!igep2_snd_device) { | ||
printk(KERN_ERR "Platform device allocation failed\n"); | ||
return -ENOMEM; | ||
} | ||
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platform_set_drvdata(igep2_snd_device, &igep2_snd_devdata); | ||
igep2_snd_devdata.dev = &igep2_snd_device->dev; | ||
*(unsigned int *)igep2_dai.cpu_dai->private_data = 1; /* McBSP2 */ | ||
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ret = platform_device_add(igep2_snd_device); | ||
if (ret) | ||
goto err1; | ||
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return 0; | ||
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err1: | ||
printk(KERN_ERR "Unable to add platform device\n"); | ||
platform_device_put(igep2_snd_device); | ||
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return ret; | ||
} | ||
module_init(igep2_soc_init); | ||
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static void __exit igep2_soc_exit(void) | ||
{ | ||
platform_device_unregister(igep2_snd_device); | ||
} | ||
module_exit(igep2_soc_exit); | ||
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MODULE_AUTHOR("Enric Balletbo i Serra <eballetbo@iseebcn.com>"); | ||
MODULE_DESCRIPTION("ALSA SoC IGEP v2"); | ||
MODULE_LICENSE("GPL"); |