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0c516b4ff8
This patch adds support for the Cirrus Logic CS42448/CS42888 Audio CODEC that has six/four 24-bit AD and eight 24-bit DA converters. [ CS42448/CS42888 supports both I2C and SPI control ports. As initial patch, this patch only adds the support for I2C. ] Signed-off-by: Nicolin Chen <Guangyu.Chen@freescale.com> Acked-by: Brian Austin <brian.austin@cirrus.com> Acked-by: Paul Handrigan <Paul.Handrigan@cirrus.com> Signed-off-by: Mark Brown <broonie@linaro.org>
64 lines
1.5 KiB
C
64 lines
1.5 KiB
C
/*
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* Cirrus Logic CS42448/CS42888 Audio CODEC DAI I2C driver
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*
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* Copyright (C) 2014 Freescale Semiconductor, Inc.
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*
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* Author: Nicolin Chen <Guangyu.Chen@freescale.com>
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*
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* This file is licensed under the terms of the GNU General Public License
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* version 2. This program is licensed "as is" without any warranty of any
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* kind, whether express or implied.
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*/
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#include <linux/i2c.h>
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#include <linux/module.h>
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#include <linux/pm_runtime.h>
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#include <sound/soc.h>
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#include "cs42xx8.h"
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static int cs42xx8_i2c_probe(struct i2c_client *i2c,
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const struct i2c_device_id *id)
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{
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u32 ret = cs42xx8_probe(&i2c->dev,
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devm_regmap_init_i2c(i2c, &cs42xx8_regmap_config));
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if (ret)
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return ret;
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pm_runtime_enable(&i2c->dev);
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pm_request_idle(&i2c->dev);
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return 0;
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}
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static int cs42xx8_i2c_remove(struct i2c_client *i2c)
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{
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snd_soc_unregister_codec(&i2c->dev);
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pm_runtime_disable(&i2c->dev);
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return 0;
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}
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static struct i2c_device_id cs42xx8_i2c_id[] = {
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{"cs42448", (kernel_ulong_t)&cs42448_data},
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{"cs42888", (kernel_ulong_t)&cs42888_data},
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{}
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};
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MODULE_DEVICE_TABLE(i2c, cs42xx8_i2c_id);
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static struct i2c_driver cs42xx8_i2c_driver = {
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.driver = {
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.name = "cs42xx8",
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.owner = THIS_MODULE,
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.pm = &cs42xx8_pm,
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},
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.probe = cs42xx8_i2c_probe,
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.remove = cs42xx8_i2c_remove,
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.id_table = cs42xx8_i2c_id,
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};
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module_i2c_driver(cs42xx8_i2c_driver);
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MODULE_DESCRIPTION("Cirrus Logic CS42448/CS42888 ALSA SoC Codec I2C Driver");
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MODULE_AUTHOR("Freescale Semiconductor, Inc.");
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MODULE_LICENSE("GPL");
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