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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/pcm1789-i2c.c:36:34: warning: ‘pcm1789_of_match’ defined but not used [-Wunused-const-variable=] Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Link: https://lore.kernel.org/r/20201125164452.89239-28-krzk@kernel.org Signed-off-by: Mark Brown <broonie@kernel.org>
65 lines
1.5 KiB
C
65 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
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// Audio driver for PCM1789 I2C
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// Copyright (C) 2018 Bootlin
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// Mylène Josserand <mylene.josserand@bootlin.com>
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#include <linux/clk.h>
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#include <linux/delay.h>
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#include <linux/i2c.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/regmap.h>
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#include "pcm1789.h"
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static int pcm1789_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, &pcm1789_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 pcm1789_common_init(&client->dev, regmap);
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}
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static int pcm1789_i2c_remove(struct i2c_client *client)
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{
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return pcm1789_common_exit(&client->dev);
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}
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#ifdef CONFIG_OF
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static const struct of_device_id pcm1789_of_match[] = {
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{ .compatible = "ti,pcm1789", },
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{ }
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};
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MODULE_DEVICE_TABLE(of, pcm1789_of_match);
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#endif
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static const struct i2c_device_id pcm1789_i2c_ids[] = {
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{ "pcm1789", 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, pcm1789_i2c_ids);
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static struct i2c_driver pcm1789_i2c_driver = {
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.driver = {
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.name = "pcm1789",
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.of_match_table = of_match_ptr(pcm1789_of_match),
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},
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.id_table = pcm1789_i2c_ids,
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.probe = pcm1789_i2c_probe,
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.remove = pcm1789_i2c_remove,
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};
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module_i2c_driver(pcm1789_i2c_driver);
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MODULE_DESCRIPTION("ASoC PCM1789 I2C driver");
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MODULE_AUTHOR("Mylène Josserand <mylene.josserand@bootlin.com>");
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MODULE_LICENSE("GPL");
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