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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adau7118-i2c.c (2347B)

      1// SPDX-License-Identifier: GPL-2.0
      2//
      3// Analog Devices ADAU7118 8 channel PDM-to-I2S/TDM Converter driver over I2C
      4//
      5// Copyright 2019 Analog Devices Inc.
      6
      7#include <linux/i2c.h>
      8#include <linux/module.h>
      9#include <linux/regmap.h>
     10
     11#include "adau7118.h"
     12
     13static const struct reg_default adau7118_reg_defaults[] = {
     14	{ ADAU7118_REG_VENDOR_ID, 0x41 },
     15	{ ADAU7118_REG_DEVICE_ID1, 0x71 },
     16	{ ADAU7118_REG_DEVICE_ID2, 0x18 },
     17	{ ADAU7118_REG_REVISION_ID, 0x00 },
     18	{ ADAU7118_REG_ENABLES, 0x3F },
     19	{ ADAU7118_REG_DEC_RATIO_CLK_MAP, 0xC0 },
     20	{ ADAU7118_REG_HPF_CONTROL, 0xD0 },
     21	{ ADAU7118_REG_SPT_CTRL1, 0x41 },
     22	{ ADAU7118_REG_SPT_CTRL2, 0x00 },
     23	{ ADAU7118_REG_SPT_CX(0), 0x01 },
     24	{ ADAU7118_REG_SPT_CX(1), 0x11 },
     25	{ ADAU7118_REG_SPT_CX(2), 0x21 },
     26	{ ADAU7118_REG_SPT_CX(3), 0x31 },
     27	{ ADAU7118_REG_SPT_CX(4), 0x41 },
     28	{ ADAU7118_REG_SPT_CX(5), 0x51 },
     29	{ ADAU7118_REG_SPT_CX(6), 0x61 },
     30	{ ADAU7118_REG_SPT_CX(7), 0x71 },
     31	{ ADAU7118_REG_DRIVE_STRENGTH, 0x2a },
     32	{ ADAU7118_REG_RESET, 0x00 },
     33};
     34
     35static bool adau7118_volatile(struct device *dev, unsigned int reg)
     36{
     37	return (reg == ADAU7118_REG_RESET);
     38}
     39
     40
     41static const struct regmap_config adau7118_regmap_config = {
     42	.reg_bits = 8,
     43	.val_bits = 8,
     44	.reg_defaults = adau7118_reg_defaults,
     45	.num_reg_defaults = ARRAY_SIZE(adau7118_reg_defaults),
     46	.cache_type = REGCACHE_RBTREE,
     47	.max_register = ADAU7118_REG_RESET,
     48	.volatile_reg = adau7118_volatile,
     49};
     50
     51static int adau7118_probe_i2c(struct i2c_client *i2c)
     52{
     53	struct regmap *map;
     54
     55	map = devm_regmap_init_i2c(i2c, &adau7118_regmap_config);
     56	if (IS_ERR(map)) {
     57		dev_err(&i2c->dev, "Failed to init regmap %ld\n", PTR_ERR(map));
     58		return PTR_ERR(map);
     59	}
     60
     61	return adau7118_probe(&i2c->dev, map, false);
     62}
     63
     64static const struct of_device_id adau7118_of_match[] = {
     65	{ .compatible = "adi,adau7118" },
     66	{}
     67};
     68MODULE_DEVICE_TABLE(of, adau7118_of_match);
     69
     70static const struct i2c_device_id adau7118_id[] = {
     71	{"adau7118", 0},
     72	{}
     73};
     74MODULE_DEVICE_TABLE(i2c, adau7118_id);
     75
     76static struct i2c_driver adau7118_driver = {
     77	.driver = {
     78		.name = "adau7118",
     79		.of_match_table = adau7118_of_match,
     80	},
     81	.probe_new = adau7118_probe_i2c,
     82	.id_table = adau7118_id,
     83};
     84module_i2c_driver(adau7118_driver);
     85
     86MODULE_AUTHOR("Nuno Sa <nuno.sa@analog.com>");
     87MODULE_DESCRIPTION("ADAU7118 8 channel PDM-to-I2S/TDM Converter driver over I2C");
     88MODULE_LICENSE("GPL");