b79bd63a66
The i2c probe functions here don't use the id information provided in
their second argument, so the single-parameter i2c probe function
("probe_new") can be used instead.
This avoids scanning the identifier tables during probes.
Signed-off-by: Stephen Kitt <steve@sk2.org>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20220325164828.1209201-1-steve@sk2.org
Signed-off-by: Mark Brown <broonie@kernel.org>
89 lines
2.3 KiB
C
89 lines
2.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
//
|
|
// Analog Devices ADAU7118 8 channel PDM-to-I2S/TDM Converter driver over I2C
|
|
//
|
|
// Copyright 2019 Analog Devices Inc.
|
|
|
|
#include <linux/i2c.h>
|
|
#include <linux/module.h>
|
|
#include <linux/regmap.h>
|
|
|
|
#include "adau7118.h"
|
|
|
|
static const struct reg_default adau7118_reg_defaults[] = {
|
|
{ ADAU7118_REG_VENDOR_ID, 0x41 },
|
|
{ ADAU7118_REG_DEVICE_ID1, 0x71 },
|
|
{ ADAU7118_REG_DEVICE_ID2, 0x18 },
|
|
{ ADAU7118_REG_REVISION_ID, 0x00 },
|
|
{ ADAU7118_REG_ENABLES, 0x3F },
|
|
{ ADAU7118_REG_DEC_RATIO_CLK_MAP, 0xC0 },
|
|
{ ADAU7118_REG_HPF_CONTROL, 0xD0 },
|
|
{ ADAU7118_REG_SPT_CTRL1, 0x41 },
|
|
{ ADAU7118_REG_SPT_CTRL2, 0x00 },
|
|
{ ADAU7118_REG_SPT_CX(0), 0x01 },
|
|
{ ADAU7118_REG_SPT_CX(1), 0x11 },
|
|
{ ADAU7118_REG_SPT_CX(2), 0x21 },
|
|
{ ADAU7118_REG_SPT_CX(3), 0x31 },
|
|
{ ADAU7118_REG_SPT_CX(4), 0x41 },
|
|
{ ADAU7118_REG_SPT_CX(5), 0x51 },
|
|
{ ADAU7118_REG_SPT_CX(6), 0x61 },
|
|
{ ADAU7118_REG_SPT_CX(7), 0x71 },
|
|
{ ADAU7118_REG_DRIVE_STRENGTH, 0x2a },
|
|
{ ADAU7118_REG_RESET, 0x00 },
|
|
};
|
|
|
|
static bool adau7118_volatile(struct device *dev, unsigned int reg)
|
|
{
|
|
return (reg == ADAU7118_REG_RESET);
|
|
}
|
|
|
|
|
|
static const struct regmap_config adau7118_regmap_config = {
|
|
.reg_bits = 8,
|
|
.val_bits = 8,
|
|
.reg_defaults = adau7118_reg_defaults,
|
|
.num_reg_defaults = ARRAY_SIZE(adau7118_reg_defaults),
|
|
.cache_type = REGCACHE_RBTREE,
|
|
.max_register = ADAU7118_REG_RESET,
|
|
.volatile_reg = adau7118_volatile,
|
|
};
|
|
|
|
static int adau7118_probe_i2c(struct i2c_client *i2c)
|
|
{
|
|
struct regmap *map;
|
|
|
|
map = devm_regmap_init_i2c(i2c, &adau7118_regmap_config);
|
|
if (IS_ERR(map)) {
|
|
dev_err(&i2c->dev, "Failed to init regmap %ld\n", PTR_ERR(map));
|
|
return PTR_ERR(map);
|
|
}
|
|
|
|
return adau7118_probe(&i2c->dev, map, false);
|
|
}
|
|
|
|
static const struct of_device_id adau7118_of_match[] = {
|
|
{ .compatible = "adi,adau7118" },
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(of, adau7118_of_match);
|
|
|
|
static const struct i2c_device_id adau7118_id[] = {
|
|
{"adau7118", 0},
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, adau7118_id);
|
|
|
|
static struct i2c_driver adau7118_driver = {
|
|
.driver = {
|
|
.name = "adau7118",
|
|
.of_match_table = adau7118_of_match,
|
|
},
|
|
.probe_new = adau7118_probe_i2c,
|
|
.id_table = adau7118_id,
|
|
};
|
|
module_i2c_driver(adau7118_driver);
|
|
|
|
MODULE_AUTHOR("Nuno Sa <nuno.sa@analog.com>");
|
|
MODULE_DESCRIPTION("ADAU7118 8 channel PDM-to-I2S/TDM Converter driver over I2C");
|
|
MODULE_LICENSE("GPL");
|