92 lines
2.3 KiB
C
Executable File
92 lines
2.3 KiB
C
Executable File
/*
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* Calibration support for Cirrus Logic CS35L41 codec
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*
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* Copyright 2017 Cirrus Logic
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*
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* Author: David Rhodes <david.rhodes@cirrus.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/module.h>
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#include <linux/miscdevice.h>
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#include <linux/device.h>
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#include <linux/uaccess.h>
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#include <linux/delay.h>
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#include <linux/regmap.h>
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#include <linux/slab.h>
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#include <linux/syscalls.h>
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#include <linux/file.h>
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#include <linux/fcntl.h>
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#include <linux/fs.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <asm/io.h>
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#include <linux/firmware.h>
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#include <linux/vmalloc.h>
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#include <linux/workqueue.h>
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#include <linux/power_supply.h>
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#include <linux/fs.h>
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#include <linux/of_device.h>
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#include <linux/mfd/cs35l41/core.h>
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#include <linux/mfd/cs35l41/registers.h>
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#include <linux/mfd/cs35l41/calibration.h>
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#include <linux/mfd/cs35l41/wmfw.h>
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static int cs35l41_cal_probe(struct platform_device *pdev)
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{
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struct cs35l41_data *cs35l41 = dev_get_drvdata(pdev->dev.parent);
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unsigned int temp;
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bool right_channel_amp;
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const char *dsp_part_name;
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const char *mfd_suffix;
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int ret;
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regmap_read(cs35l41->regmap, 0x00000000, &temp);
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dev_info(&pdev->dev, "Prince Calibration Driver probe, Dev ID = %x\n", temp);
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right_channel_amp = of_property_read_bool(cs35l41->dev->of_node,
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"cirrus,right-channel-amp");
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ret = of_property_read_string(cs35l41->dev->of_node,
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"cirrus,dsp-part-name",
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&dsp_part_name);
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if (ret < 0)
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dsp_part_name = "cs35l41";
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ret = of_property_read_string(cs35l41->dev->of_node,
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"cirrus,mfd-suffix",
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&mfd_suffix);
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if (ret < 0) {
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dev_err(&pdev->dev, "No MFD suffix\n");
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return -EINVAL;
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}
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ret = cirrus_cal_amp_add(cs35l41->regmap, mfd_suffix,
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dsp_part_name);
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if (ret < 0) {
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dev_info(&pdev->dev,
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"cirrus_cal device not ready, probe deferred\n");
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return -EPROBE_DEFER;
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}
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return 0;
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}
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static int cs35l41_cal_remove(struct platform_device *pdev)
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{
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return 0;
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}
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static struct platform_driver cs35l41_cal_driver = {
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.driver = {
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.name = "cs35l41-cal",
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.owner = THIS_MODULE,
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},
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.probe = cs35l41_cal_probe,
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.remove = cs35l41_cal_remove,
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};
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module_platform_driver(cs35l41_cal_driver);
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