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yaml --- r: 316251 b: refs/heads/master c: f62ae7b h: refs/heads/master i: 316249: 57f55fd 316247: 76eabd1 v: v3
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Scott Jiang
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Mark Brown
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Jun 20, 2012
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refs/heads/master: d2aae47f804830da904d2454d73959eda4ebb0fd | ||
refs/heads/master: f62ae7bda434ac5d2bcd6feb4f5bdb5885633177 |
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/* | ||
* bf6xx-i2s.c - Analog Devices BF6XX i2s interface driver | ||
* | ||
* Copyright (c) 2012 Analog Devices Inc. | ||
* | ||
* 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., 675 Mass Ave, Cambridge, MA 02139, USA. | ||
*/ | ||
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#include <linux/device.h> | ||
#include <linux/init.h> | ||
#include <linux/module.h> | ||
#include <linux/platform_device.h> | ||
#include <sound/pcm.h> | ||
#include <sound/pcm_params.h> | ||
#include <sound/soc.h> | ||
#include <sound/soc-dai.h> | ||
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#include "bf6xx-sport.h" | ||
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struct sport_params param; | ||
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static int bfin_i2s_set_dai_fmt(struct snd_soc_dai *cpu_dai, | ||
unsigned int fmt) | ||
{ | ||
struct sport_device *sport = snd_soc_dai_get_drvdata(cpu_dai); | ||
struct device *dev = &sport->pdev->dev; | ||
int ret = 0; | ||
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param.spctl &= ~(SPORT_CTL_OPMODE | SPORT_CTL_CKRE | SPORT_CTL_FSR | ||
| SPORT_CTL_LFS | SPORT_CTL_LAFS); | ||
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | ||
case SND_SOC_DAIFMT_I2S: | ||
param.spctl |= SPORT_CTL_OPMODE | SPORT_CTL_CKRE | ||
| SPORT_CTL_LFS; | ||
break; | ||
case SND_SOC_DAIFMT_DSP_A: | ||
param.spctl |= SPORT_CTL_FSR; | ||
break; | ||
case SND_SOC_DAIFMT_LEFT_J: | ||
param.spctl |= SPORT_CTL_OPMODE | SPORT_CTL_LFS | ||
| SPORT_CTL_LAFS; | ||
break; | ||
default: | ||
dev_err(dev, "%s: Unknown DAI format type\n", __func__); | ||
ret = -EINVAL; | ||
break; | ||
} | ||
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param.spctl &= ~(SPORT_CTL_ICLK | SPORT_CTL_IFS); | ||
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | ||
case SND_SOC_DAIFMT_CBM_CFM: | ||
break; | ||
case SND_SOC_DAIFMT_CBS_CFS: | ||
case SND_SOC_DAIFMT_CBM_CFS: | ||
case SND_SOC_DAIFMT_CBS_CFM: | ||
ret = -EINVAL; | ||
break; | ||
default: | ||
dev_err(dev, "%s: Unknown DAI master type\n", __func__); | ||
ret = -EINVAL; | ||
break; | ||
} | ||
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return ret; | ||
} | ||
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static int bfin_i2s_hw_params(struct snd_pcm_substream *substream, | ||
struct snd_pcm_hw_params *params, | ||
struct snd_soc_dai *dai) | ||
{ | ||
struct sport_device *sport = snd_soc_dai_get_drvdata(dai); | ||
struct device *dev = &sport->pdev->dev; | ||
int ret = 0; | ||
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param.spctl &= ~SPORT_CTL_SLEN; | ||
switch (params_format(params)) { | ||
case SNDRV_PCM_FORMAT_S8: | ||
param.spctl |= 0x70; | ||
sport->wdsize = 1; | ||
case SNDRV_PCM_FORMAT_S16_LE: | ||
param.spctl |= 0xf0; | ||
sport->wdsize = 2; | ||
break; | ||
case SNDRV_PCM_FORMAT_S24_LE: | ||
param.spctl |= 0x170; | ||
sport->wdsize = 3; | ||
break; | ||
case SNDRV_PCM_FORMAT_S32_LE: | ||
param.spctl |= 0x1f0; | ||
sport->wdsize = 4; | ||
break; | ||
} | ||
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | ||
ret = sport_set_tx_params(sport, ¶m); | ||
if (ret) { | ||
dev_err(dev, "SPORT tx is busy!\n"); | ||
return ret; | ||
} | ||
} else { | ||
ret = sport_set_rx_params(sport, ¶m); | ||
if (ret) { | ||
dev_err(dev, "SPORT rx is busy!\n"); | ||
return ret; | ||
} | ||
} | ||
return 0; | ||
} | ||
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#ifdef CONFIG_PM | ||
static int bfin_i2s_suspend(struct snd_soc_dai *dai) | ||
{ | ||
struct sport_device *sport = snd_soc_dai_get_drvdata(dai); | ||
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if (dai->capture_active) | ||
sport_rx_stop(sport); | ||
if (dai->playback_active) | ||
sport_tx_stop(sport); | ||
return 0; | ||
} | ||
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static int bfin_i2s_resume(struct snd_soc_dai *dai) | ||
{ | ||
struct sport_device *sport = snd_soc_dai_get_drvdata(dai); | ||
struct device *dev = &sport->pdev->dev; | ||
int ret; | ||
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ret = sport_set_tx_params(sport, ¶m); | ||
if (ret) { | ||
dev_err(dev, "SPORT tx is busy!\n"); | ||
return ret; | ||
} | ||
ret = sport_set_rx_params(sport, ¶m); | ||
if (ret) { | ||
dev_err(dev, "SPORT rx is busy!\n"); | ||
return ret; | ||
} | ||
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return 0; | ||
} | ||
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#else | ||
#define bfin_i2s_suspend NULL | ||
#define bfin_i2s_resume NULL | ||
#endif | ||
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#define BFIN_I2S_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ | ||
SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \ | ||
SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | \ | ||
SNDRV_PCM_RATE_96000) | ||
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#define BFIN_I2S_FORMATS (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE | \ | ||
SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) | ||
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static struct snd_soc_dai_ops bfin_i2s_dai_ops = { | ||
.hw_params = bfin_i2s_hw_params, | ||
.set_fmt = bfin_i2s_set_dai_fmt, | ||
}; | ||
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static struct snd_soc_dai_driver bfin_i2s_dai = { | ||
.suspend = bfin_i2s_suspend, | ||
.resume = bfin_i2s_resume, | ||
.playback = { | ||
.channels_min = 1, | ||
.channels_max = 2, | ||
.rates = BFIN_I2S_RATES, | ||
.formats = BFIN_I2S_FORMATS, | ||
}, | ||
.capture = { | ||
.channels_min = 1, | ||
.channels_max = 2, | ||
.rates = BFIN_I2S_RATES, | ||
.formats = BFIN_I2S_FORMATS, | ||
}, | ||
.ops = &bfin_i2s_dai_ops, | ||
}; | ||
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static int __devinit bfin_i2s_probe(struct platform_device *pdev) | ||
{ | ||
struct sport_device *sport; | ||
struct device *dev = &pdev->dev; | ||
int ret; | ||
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sport = sport_create(pdev); | ||
if (!sport) | ||
return -ENODEV; | ||
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/* register with the ASoC layers */ | ||
ret = snd_soc_register_dai(dev, &bfin_i2s_dai); | ||
if (ret) { | ||
dev_err(dev, "Failed to register DAI: %d\n", ret); | ||
sport_delete(sport); | ||
return ret; | ||
} | ||
platform_set_drvdata(pdev, sport); | ||
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return 0; | ||
} | ||
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static int __devexit bfin_i2s_remove(struct platform_device *pdev) | ||
{ | ||
struct sport_device *sport = platform_get_drvdata(pdev); | ||
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snd_soc_unregister_dai(&pdev->dev); | ||
sport_delete(sport); | ||
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return 0; | ||
} | ||
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static struct platform_driver bfin_i2s_driver = { | ||
.probe = bfin_i2s_probe, | ||
.remove = __devexit_p(bfin_i2s_remove), | ||
.driver = { | ||
.name = "bfin-i2s", | ||
.owner = THIS_MODULE, | ||
}, | ||
}; | ||
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module_platform_driver(bfin_i2s_driver); | ||
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MODULE_DESCRIPTION("Analog Devices BF6XX i2s interface driver"); | ||
MODULE_AUTHOR("Scott Jiang <Scott.Jiang.Linux@gmail.com>"); | ||
MODULE_LICENSE("GPL v2"); |