cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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pcm512x-i2c.c (1931B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 * Driver for the PCM512x CODECs
      4 *
      5 * Author:	Mark Brown <broonie@kernel.org>
      6 *		Copyright 2014 Linaro Ltd
      7 */
      8
      9#include <linux/init.h>
     10#include <linux/module.h>
     11#include <linux/i2c.h>
     12#include <linux/acpi.h>
     13
     14#include "pcm512x.h"
     15
     16static int pcm512x_i2c_probe(struct i2c_client *i2c)
     17{
     18	struct regmap *regmap;
     19	struct regmap_config config = pcm512x_regmap;
     20
     21	/* msb needs to be set to enable auto-increment of addresses */
     22	config.read_flag_mask = 0x80;
     23	config.write_flag_mask = 0x80;
     24
     25	regmap = devm_regmap_init_i2c(i2c, &config);
     26	if (IS_ERR(regmap))
     27		return PTR_ERR(regmap);
     28
     29	return pcm512x_probe(&i2c->dev, regmap);
     30}
     31
     32static int pcm512x_i2c_remove(struct i2c_client *i2c)
     33{
     34	pcm512x_remove(&i2c->dev);
     35	return 0;
     36}
     37
     38static const struct i2c_device_id pcm512x_i2c_id[] = {
     39	{ "pcm5121", },
     40	{ "pcm5122", },
     41	{ "pcm5141", },
     42	{ "pcm5142", },
     43	{ }
     44};
     45MODULE_DEVICE_TABLE(i2c, pcm512x_i2c_id);
     46
     47#if defined(CONFIG_OF)
     48static const struct of_device_id pcm512x_of_match[] = {
     49	{ .compatible = "ti,pcm5121", },
     50	{ .compatible = "ti,pcm5122", },
     51	{ .compatible = "ti,pcm5141", },
     52	{ .compatible = "ti,pcm5142", },
     53	{ }
     54};
     55MODULE_DEVICE_TABLE(of, pcm512x_of_match);
     56#endif
     57
     58#ifdef CONFIG_ACPI
     59static const struct acpi_device_id pcm512x_acpi_match[] = {
     60	{ "104C5121", 0 },
     61	{ "104C5122", 0 },
     62	{ "104C5141", 0 },
     63	{ "104C5142", 0 },
     64	{ },
     65};
     66MODULE_DEVICE_TABLE(acpi, pcm512x_acpi_match);
     67#endif
     68
     69static struct i2c_driver pcm512x_i2c_driver = {
     70	.probe_new	= pcm512x_i2c_probe,
     71	.remove 	= pcm512x_i2c_remove,
     72	.id_table	= pcm512x_i2c_id,
     73	.driver		= {
     74		.name	= "pcm512x",
     75		.of_match_table = of_match_ptr(pcm512x_of_match),
     76		.acpi_match_table = ACPI_PTR(pcm512x_acpi_match),
     77		.pm     = &pcm512x_pm_ops,
     78	},
     79};
     80
     81module_i2c_driver(pcm512x_i2c_driver);
     82
     83MODULE_DESCRIPTION("ASoC PCM512x codec driver - I2C");
     84MODULE_AUTHOR("Mark Brown <broonie@kernel.org>");
     85MODULE_LICENSE("GPL v2");