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The function i2c_match_id() is used to fetch the matching ID from the i2c_device_id table. This is often used to then retrieve the matching driver_data. This can be done in one step with the helper i2c_get_match_data(). This helper has a couple other benefits: * It doesn't need the i2c_device_id passed in so we do not need to have that forward declared, allowing us to remove those or move the i2c_device_id table down to its more natural spot with the other module info. * It also checks for device match data, which allows for OF and ACPI based probing. That means we do not have to manually check those first and can remove those checks. Signed-off-by: Andrew Davis <afd@ti.com> Link: https://patch.msgid.link/20241203200001.197295-12-afd@ti.com Signed-off-by: Mark Brown <broonie@kernel.org>
56 lines
1.3 KiB
C
56 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* SSM2602/SSM2603/SSM2604 I2C audio driver
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*
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* Copyright 2014 Analog Devices Inc.
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*/
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#include <linux/module.h>
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#include <linux/i2c.h>
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#include <linux/regmap.h>
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#include <sound/soc.h>
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#include "ssm2602.h"
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/*
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* ssm2602 2 wire address is determined by GPIO5
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* state during powerup.
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* low = 0x1a
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* high = 0x1b
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*/
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static int ssm2602_i2c_probe(struct i2c_client *client)
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{
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return ssm2602_probe(&client->dev, (uintptr_t)i2c_get_match_data(client),
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devm_regmap_init_i2c(client, &ssm2602_regmap_config));
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}
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static const struct i2c_device_id ssm2602_i2c_id[] = {
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{ "ssm2602", SSM2602 },
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{ "ssm2603", SSM2602 },
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{ "ssm2604", SSM2604 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, ssm2602_i2c_id);
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static const struct of_device_id ssm2602_of_match[] = {
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{ .compatible = "adi,ssm2602", },
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{ .compatible = "adi,ssm2603", },
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{ .compatible = "adi,ssm2604", },
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{ }
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};
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MODULE_DEVICE_TABLE(of, ssm2602_of_match);
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static struct i2c_driver ssm2602_i2c_driver = {
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.driver = {
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.name = "ssm2602",
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.of_match_table = ssm2602_of_match,
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},
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.probe = ssm2602_i2c_probe,
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.id_table = ssm2602_i2c_id,
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};
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module_i2c_driver(ssm2602_i2c_driver);
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MODULE_DESCRIPTION("ASoC SSM2602/SSM2603/SSM2604 I2C driver");
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MODULE_AUTHOR("Cliff Cai");
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MODULE_LICENSE("GPL");
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