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The driver can match by multiple methods. Its of_device_id table is referenced via of_match_ptr() so it will be unused for !CONFIG_OF builds: sound/soc/codecs/pcm179x-i2c.c:33:34: warning: ‘pcm179x_of_match’ defined but not used [-Wunused-const-variable=] Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Link: https://lore.kernel.org/r/20201125164452.89239-29-krzk@kernel.org Signed-off-by: Mark Brown <broonie@kernel.org>
61 lines
1.3 KiB
C
61 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* PCM179X ASoC I2C driver
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*
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* Copyright (c) Teenage Engineering AB 2016
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*
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* Jacob Siverskog <jacob@teenage.engineering>
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*/
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/i2c.h>
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#include <linux/regmap.h>
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#include "pcm179x.h"
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static int pcm179x_i2c_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct regmap *regmap;
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int ret;
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regmap = devm_regmap_init_i2c(client, &pcm179x_regmap_config);
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if (IS_ERR(regmap)) {
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ret = PTR_ERR(regmap);
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dev_err(&client->dev, "Failed to allocate regmap: %d\n", ret);
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return ret;
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}
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return pcm179x_common_init(&client->dev, regmap);
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}
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#ifdef CONFIG_OF
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static const struct of_device_id pcm179x_of_match[] = {
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{ .compatible = "ti,pcm1792a", },
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{ }
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};
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MODULE_DEVICE_TABLE(of, pcm179x_of_match);
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#endif
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static const struct i2c_device_id pcm179x_i2c_ids[] = {
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{ "pcm179x", 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, pcm179x_i2c_ids);
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static struct i2c_driver pcm179x_i2c_driver = {
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.driver = {
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.name = "pcm179x",
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.of_match_table = of_match_ptr(pcm179x_of_match),
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},
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.id_table = pcm179x_i2c_ids,
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.probe = pcm179x_i2c_probe,
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};
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module_i2c_driver(pcm179x_i2c_driver);
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MODULE_DESCRIPTION("ASoC PCM179X I2C driver");
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MODULE_AUTHOR("Jacob Siverskog <jacob@teenage.engineering>");
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MODULE_LICENSE("GPL");
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