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Lars-Peter Clausen
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Mark Brown
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Aug 16, 2011
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/* | ||
* Machine driver for EVAL-ADAU1373 on Analog Devices bfin | ||
* evaluation boards. | ||
* | ||
* Copyright 2011 Analog Devices Inc. | ||
* Author: Lars-Peter Clausen <lars@metafoo.de> | ||
* | ||
* Licensed under the GPL-2 or later. | ||
*/ | ||
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#include <linux/module.h> | ||
#include <linux/device.h> | ||
#include <sound/core.h> | ||
#include <sound/pcm.h> | ||
#include <sound/soc.h> | ||
#include <sound/pcm_params.h> | ||
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#include "../codecs/adau1373.h" | ||
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static const struct snd_soc_dapm_widget bfin_eval_adau1373_dapm_widgets[] = { | ||
SND_SOC_DAPM_LINE("Line In1", NULL), | ||
SND_SOC_DAPM_LINE("Line In2", NULL), | ||
SND_SOC_DAPM_LINE("Line In3", NULL), | ||
SND_SOC_DAPM_LINE("Line In4", NULL), | ||
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SND_SOC_DAPM_LINE("Line Out1", NULL), | ||
SND_SOC_DAPM_LINE("Line Out2", NULL), | ||
SND_SOC_DAPM_LINE("Stereo Out", NULL), | ||
SND_SOC_DAPM_HP("Headphone", NULL), | ||
SND_SOC_DAPM_HP("Earpiece", NULL), | ||
SND_SOC_DAPM_SPK("Speaker", NULL), | ||
}; | ||
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static const struct snd_soc_dapm_route bfin_eval_adau1373_dapm_routes[] = { | ||
{ "AIN1L", NULL, "Line In1" }, | ||
{ "AIN1R", NULL, "Line In1" }, | ||
{ "AIN2L", NULL, "Line In2" }, | ||
{ "AIN2R", NULL, "Line In2" }, | ||
{ "AIN3L", NULL, "Line In3" }, | ||
{ "AIN3R", NULL, "Line In3" }, | ||
{ "AIN4L", NULL, "Line In4" }, | ||
{ "AIN4R", NULL, "Line In4" }, | ||
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/* MICBIAS can be connected via a jumper to the line-in jack, since w | ||
don't know which one is going to be used, just power both. */ | ||
{ "Line In1", NULL, "MICBIAS1" }, | ||
{ "Line In2", NULL, "MICBIAS1" }, | ||
{ "Line In3", NULL, "MICBIAS1" }, | ||
{ "Line In4", NULL, "MICBIAS1" }, | ||
{ "Line In1", NULL, "MICBIAS2" }, | ||
{ "Line In2", NULL, "MICBIAS2" }, | ||
{ "Line In3", NULL, "MICBIAS2" }, | ||
{ "Line In4", NULL, "MICBIAS2" }, | ||
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{ "Line Out1", NULL, "LOUT1L" }, | ||
{ "Line Out1", NULL, "LOUT1R" }, | ||
{ "Line Out2", NULL, "LOUT2L" }, | ||
{ "Line Out2", NULL, "LOUT2R" }, | ||
{ "Headphone", NULL, "HPL" }, | ||
{ "Headphone", NULL, "HPR" }, | ||
{ "Earpiece", NULL, "EP" }, | ||
{ "Speaker", NULL, "SPKL" }, | ||
{ "Stereo Out", NULL, "SPKR" }, | ||
}; | ||
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static int bfin_eval_adau1373_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; | ||
struct snd_soc_dai *codec_dai = rtd->codec_dai; | ||
int ret; | ||
int pll_rate; | ||
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ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S | | ||
SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM); | ||
if (ret) | ||
return ret; | ||
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ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | | ||
SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM); | ||
if (ret) | ||
return ret; | ||
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switch (params_rate(params)) { | ||
case 48000: | ||
case 8000: | ||
case 12000: | ||
case 16000: | ||
case 24000: | ||
case 32000: | ||
pll_rate = 48000 * 1024; | ||
break; | ||
case 44100: | ||
case 7350: | ||
case 11025: | ||
case 14700: | ||
case 22050: | ||
case 29400: | ||
pll_rate = 44100 * 1024; | ||
break; | ||
default: | ||
return -EINVAL; | ||
} | ||
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ret = snd_soc_dai_set_pll(codec_dai, ADAU1373_PLL1, | ||
ADAU1373_PLL_SRC_MCLK1, 12288000, pll_rate); | ||
if (ret) | ||
return ret; | ||
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ret = snd_soc_dai_set_sysclk(codec_dai, ADAU1373_CLK_SRC_PLL1, pll_rate, | ||
SND_SOC_CLOCK_IN); | ||
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return ret; | ||
} | ||
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static int bfin_eval_adau1373_codec_init(struct snd_soc_pcm_runtime *rtd) | ||
{ | ||
struct snd_soc_dai *codec_dai = rtd->codec_dai; | ||
unsigned int pll_rate = 48000 * 1024; | ||
int ret; | ||
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ret = snd_soc_dai_set_pll(codec_dai, ADAU1373_PLL1, | ||
ADAU1373_PLL_SRC_MCLK1, 12288000, pll_rate); | ||
if (ret) | ||
return ret; | ||
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ret = snd_soc_dai_set_sysclk(codec_dai, ADAU1373_CLK_SRC_PLL1, pll_rate, | ||
SND_SOC_CLOCK_IN); | ||
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return ret; | ||
} | ||
static struct snd_soc_ops bfin_eval_adau1373_ops = { | ||
.hw_params = bfin_eval_adau1373_hw_params, | ||
}; | ||
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static struct snd_soc_dai_link bfin_eval_adau1373_dai = { | ||
.name = "adau1373", | ||
.stream_name = "adau1373", | ||
.cpu_dai_name = "bfin-i2s.0", | ||
.codec_dai_name = "adau1373-aif1", | ||
.platform_name = "bfin-i2s-pcm-audio", | ||
.codec_name = "adau1373.0-001a", | ||
.ops = &bfin_eval_adau1373_ops, | ||
.init = bfin_eval_adau1373_codec_init, | ||
}; | ||
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static struct snd_soc_card bfin_eval_adau1373 = { | ||
.name = "bfin-eval-adau1373", | ||
.dai_link = &bfin_eval_adau1373_dai, | ||
.num_links = 1, | ||
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.dapm_widgets = bfin_eval_adau1373_dapm_widgets, | ||
.num_dapm_widgets = ARRAY_SIZE(bfin_eval_adau1373_dapm_widgets), | ||
.dapm_routes = bfin_eval_adau1373_dapm_routes, | ||
.num_dapm_routes = ARRAY_SIZE(bfin_eval_adau1373_dapm_routes), | ||
}; | ||
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static int bfin_eval_adau1373_probe(struct platform_device *pdev) | ||
{ | ||
struct snd_soc_card *card = &bfin_eval_adau1373; | ||
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card->dev = &pdev->dev; | ||
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return snd_soc_register_card(&bfin_eval_adau1373); | ||
} | ||
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static int __devexit bfin_eval_adau1373_remove(struct platform_device *pdev) | ||
{ | ||
struct snd_soc_card *card = platform_get_drvdata(pdev); | ||
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snd_soc_unregister_card(card); | ||
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return 0; | ||
} | ||
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static struct platform_driver bfin_eval_adau1373_driver = { | ||
.driver = { | ||
.name = "bfin-eval-adau1373", | ||
.owner = THIS_MODULE, | ||
.pm = &snd_soc_pm_ops, | ||
}, | ||
.probe = bfin_eval_adau1373_probe, | ||
.remove = __devexit_p(bfin_eval_adau1373_remove), | ||
}; | ||
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static int __init bfin_eval_adau1373_init(void) | ||
{ | ||
return platform_driver_register(&bfin_eval_adau1373_driver); | ||
} | ||
module_init(bfin_eval_adau1373_init); | ||
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static void __exit bfin_eval_adau1373_exit(void) | ||
{ | ||
platform_driver_unregister(&bfin_eval_adau1373_driver); | ||
} | ||
module_exit(bfin_eval_adau1373_exit); | ||
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MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); | ||
MODULE_DESCRIPTION("ALSA SoC bfin adau1373 driver"); | ||
MODULE_LICENSE("GPL"); | ||
MODULE_ALIAS("platform:bfin-eval-adau1373"); |