0342518b0c
Do not allow the CS35L56 to be put into its lowest power "hibernation" mode. This only affects I2C because "hibernation" is already disabled on SPI. Recent firmwares need a different wake-up sequence. Until that sequence has been specified, the chip "hibernation" mode must be disabled otherwise it can intermittently fail to wake. Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Link: https://lore.kernel.org/r/20230912132739.3478441-1-rf@opensource.cirrus.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
69 lines
1.7 KiB
C
69 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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//
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// CS35L56 HDA audio driver I2C binding
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//
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// Copyright (C) 2023 Cirrus Logic, Inc. and
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// Cirrus Logic International Semiconductor Ltd.
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#include <linux/i2c.h>
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#include <linux/module.h>
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#include <linux/regmap.h>
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#include "cs35l56_hda.h"
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static int cs35l56_hda_i2c_probe(struct i2c_client *clt)
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{
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struct cs35l56_hda *cs35l56;
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int ret;
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cs35l56 = devm_kzalloc(&clt->dev, sizeof(*cs35l56), GFP_KERNEL);
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if (!cs35l56)
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return -ENOMEM;
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cs35l56->base.dev = &clt->dev;
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cs35l56->base.regmap = devm_regmap_init_i2c(clt, &cs35l56_regmap_i2c);
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if (IS_ERR(cs35l56->base.regmap)) {
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ret = PTR_ERR(cs35l56->base.regmap);
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dev_err(cs35l56->base.dev, "Failed to allocate register map: %d\n",
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ret);
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return ret;
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}
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ret = cs35l56_hda_common_probe(cs35l56, clt->addr);
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if (ret)
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return ret;
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ret = cs35l56_irq_request(&cs35l56->base, clt->irq);
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if (ret < 0)
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cs35l56_hda_remove(cs35l56->base.dev);
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return ret;
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}
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static void cs35l56_hda_i2c_remove(struct i2c_client *clt)
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{
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cs35l56_hda_remove(&clt->dev);
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}
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static const struct i2c_device_id cs35l56_hda_i2c_id[] = {
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{ "cs35l56-hda", 0 },
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{}
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};
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static struct i2c_driver cs35l56_hda_i2c_driver = {
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.driver = {
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.name = "cs35l56-hda",
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.pm = &cs35l56_hda_pm_ops,
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},
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.id_table = cs35l56_hda_i2c_id,
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.probe = cs35l56_hda_i2c_probe,
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.remove = cs35l56_hda_i2c_remove,
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};
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module_i2c_driver(cs35l56_hda_i2c_driver);
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MODULE_DESCRIPTION("HDA CS35L56 I2C driver");
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MODULE_IMPORT_NS(SND_HDA_SCODEC_CS35L56);
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MODULE_IMPORT_NS(SND_SOC_CS35L56_SHARED);
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MODULE_AUTHOR("Richard Fitzgerald <rf@opensource.cirrus.com>");
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MODULE_AUTHOR("Simon Trimmer <simont@opensource.cirrus.com>");
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MODULE_LICENSE("GPL");
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