forked from Minki/linux
1a60667fc8
Currently both the oscillator and the PLL are powered up in set_bias_level. This can be problematic when using output clocks from the wm8804 for other devices. The snd_soc_codec_set_pll API defines that a clock should be available once the call returns, however, with all the clocking controlled in set_bias_level this is not currently the case. This patch enables pm_runtime for the wm8804, enabling both the regulators and the oscillator when the chip resumes, and enabling the PLL in the snd_soc_codec_set_pll call. Naturally the enabling the PLL will also cause the chip to resume. Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@kernel.org>
66 lines
1.5 KiB
C
66 lines
1.5 KiB
C
/*
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* wm8804-i2c.c -- WM8804 S/PDIF transceiver driver - I2C
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*
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* Copyright 2015 Cirrus Logic Inc
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*
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* Author: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/i2c.h>
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#include "wm8804.h"
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static int wm8804_i2c_probe(struct i2c_client *i2c,
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const struct i2c_device_id *id)
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{
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struct regmap *regmap;
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regmap = devm_regmap_init_i2c(i2c, &wm8804_regmap_config);
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if (IS_ERR(regmap))
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return PTR_ERR(regmap);
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return wm8804_probe(&i2c->dev, regmap);
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}
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static int wm8804_i2c_remove(struct i2c_client *i2c)
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{
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wm8804_remove(&i2c->dev);
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return 0;
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}
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static const struct i2c_device_id wm8804_i2c_id[] = {
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{ "wm8804", 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, wm8804_i2c_id);
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static const struct of_device_id wm8804_of_match[] = {
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{ .compatible = "wlf,wm8804", },
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{ }
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};
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MODULE_DEVICE_TABLE(of, wm8804_of_match);
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static struct i2c_driver wm8804_i2c_driver = {
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.driver = {
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.name = "wm8804",
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.owner = THIS_MODULE,
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.pm = &wm8804_pm,
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.of_match_table = wm8804_of_match,
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},
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.probe = wm8804_i2c_probe,
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.remove = wm8804_i2c_remove,
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.id_table = wm8804_i2c_id
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};
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module_i2c_driver(wm8804_i2c_driver);
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MODULE_DESCRIPTION("ASoC WM8804 driver - I2C");
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MODULE_AUTHOR("Charles Keepax <ckeepax@opensource.wolfsonmicro.com>");
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MODULE_LICENSE("GPL");
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