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Mark Brown
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Apr 11, 2011
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refs/heads/master: c93993aca45a223452d2a95383b655c85878c6e8 | ||
refs/heads/master: 4bb3f43c6e3f3f6897f60ee1bab423ce23539d2c |
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/* | ||
* Driver for the 1250-EV1 audio I/O module | ||
* | ||
* Copyright 2011 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. | ||
* | ||
*/ | ||
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#include <linux/init.h> | ||
#include <linux/module.h> | ||
#include <linux/i2c.h> | ||
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#include <sound/soc.h> | ||
#include <sound/soc-dapm.h> | ||
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static const struct snd_soc_dapm_widget wm1250_ev1_dapm_widgets[] = { | ||
SND_SOC_DAPM_ADC("ADC", "wm1250-ev1 Capture", SND_SOC_NOPM, 0, 0), | ||
SND_SOC_DAPM_DAC("DAC", "wm1250-ev1 Playback", SND_SOC_NOPM, 0, 0), | ||
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SND_SOC_DAPM_INPUT("WM1250 Input"), | ||
SND_SOC_DAPM_INPUT("WM1250 Output"), | ||
}; | ||
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static const struct snd_soc_dapm_route wm1250_ev1_dapm_routes[] = { | ||
{ "ADC", NULL, "WM1250 Input" }, | ||
{ "WM1250 Output", NULL, "DAC" }, | ||
}; | ||
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static struct snd_soc_dai_driver wm1250_ev1_dai = { | ||
.name = "wm1250-ev1", | ||
.playback = { | ||
.stream_name = "Playback", | ||
.channels_min = 1, | ||
.channels_max = 1, | ||
.rates = SNDRV_PCM_RATE_8000, | ||
.formats = SNDRV_PCM_FMTBIT_S16_LE, | ||
}, | ||
.capture = { | ||
.stream_name = "Capture", | ||
.channels_min = 1, | ||
.channels_max = 1, | ||
.rates = SNDRV_PCM_RATE_8000, | ||
.formats = SNDRV_PCM_FMTBIT_S16_LE, | ||
}, | ||
}; | ||
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static struct snd_soc_codec_driver soc_codec_dev_wm1250_ev1 = { | ||
.dapm_widgets = wm1250_ev1_dapm_widgets, | ||
.num_dapm_widgets = ARRAY_SIZE(wm1250_ev1_dapm_widgets), | ||
.dapm_routes = wm1250_ev1_dapm_routes, | ||
.num_dapm_routes = ARRAY_SIZE(wm1250_ev1_dapm_routes), | ||
}; | ||
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static int __devinit wm1250_ev1_probe(struct i2c_client *i2c, | ||
const struct i2c_device_id *id) | ||
{ | ||
return snd_soc_register_codec(&i2c->dev, &soc_codec_dev_wm1250_ev1, | ||
&wm1250_ev1_dai, 1); | ||
} | ||
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static int __devexit wm1250_ev1_remove(struct i2c_client *i2c) | ||
{ | ||
snd_soc_unregister_codec(&i2c->dev); | ||
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return 0; | ||
} | ||
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static const struct i2c_device_id wm1250_ev1_i2c_id[] = { | ||
{ "wm1250-ev1", 0 }, | ||
{ } | ||
}; | ||
MODULE_DEVICE_TABLE(i2c, wm1250_ev1__id); | ||
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static struct i2c_driver wm1250_ev1_i2c_driver = { | ||
.driver = { | ||
.name = "wm1250-ev1", | ||
.owner = THIS_MODULE, | ||
}, | ||
.probe = wm1250_ev1_probe, | ||
.remove = __devexit_p(wm1250_ev1_remove), | ||
.id_table = wm1250_ev1_i2c_id, | ||
}; | ||
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static int __init wm1250_ev1_modinit(void) | ||
{ | ||
int ret = 0; | ||
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ret = i2c_add_driver(&wm1250_ev1_i2c_driver); | ||
if (ret != 0) | ||
pr_err("Failed to register WM1250-EV1 I2C driver: %d\n", ret); | ||
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return ret; | ||
} | ||
module_init(wm1250_ev1_modinit); | ||
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static void __exit wm1250_ev1_exit(void) | ||
{ | ||
i2c_del_driver(&wm1250_ev1_i2c_driver); | ||
} | ||
module_exit(wm1250_ev1_exit); | ||
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MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); | ||
MODULE_DESCRIPTION("WM1250-EV1 audio I/O module driver"); | ||
MODULE_LICENSE("GPL"); |