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Linux/sound/soc/codecs/pcm512x-i2c.c

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  1 // SPDX-License-Identifier: GPL-2.0-only
  2 /*
  3  * Driver for the PCM512x CODECs
  4  *
  5  * Author:      Mark Brown <broonie@kernel.org>
  6  *              Copyright 2014 Linaro Ltd
  7  */
  8 
  9 #include <linux/init.h>
 10 #include <linux/module.h>
 11 #include <linux/i2c.h>
 12 #include <linux/acpi.h>
 13 
 14 #include "pcm512x.h"
 15 
 16 static int pcm512x_i2c_probe(struct i2c_client *i2c,
 17                              const struct i2c_device_id *id)
 18 {
 19         struct regmap *regmap;
 20         struct regmap_config config = pcm512x_regmap;
 21 
 22         /* msb needs to be set to enable auto-increment of addresses */
 23         config.read_flag_mask = 0x80;
 24         config.write_flag_mask = 0x80;
 25 
 26         regmap = devm_regmap_init_i2c(i2c, &config);
 27         if (IS_ERR(regmap))
 28                 return PTR_ERR(regmap);
 29 
 30         return pcm512x_probe(&i2c->dev, regmap);
 31 }
 32 
 33 static int pcm512x_i2c_remove(struct i2c_client *i2c)
 34 {
 35         pcm512x_remove(&i2c->dev);
 36         return 0;
 37 }
 38 
 39 static const struct i2c_device_id pcm512x_i2c_id[] = {
 40         { "pcm5121", },
 41         { "pcm5122", },
 42         { "pcm5141", },
 43         { "pcm5142", },
 44         { }
 45 };
 46 MODULE_DEVICE_TABLE(i2c, pcm512x_i2c_id);
 47 
 48 #if defined(CONFIG_OF)
 49 static const struct of_device_id pcm512x_of_match[] = {
 50         { .compatible = "ti,pcm5121", },
 51         { .compatible = "ti,pcm5122", },
 52         { .compatible = "ti,pcm5141", },
 53         { .compatible = "ti,pcm5142", },
 54         { }
 55 };
 56 MODULE_DEVICE_TABLE(of, pcm512x_of_match);
 57 #endif
 58 
 59 #ifdef CONFIG_ACPI
 60 static const struct acpi_device_id pcm512x_acpi_match[] = {
 61         { "104C5121", 0 },
 62         { "104C5122", 0 },
 63         { "104C5141", 0 },
 64         { "104C5142", 0 },
 65         { },
 66 };
 67 MODULE_DEVICE_TABLE(acpi, pcm512x_acpi_match);
 68 #endif
 69 
 70 static struct i2c_driver pcm512x_i2c_driver = {
 71         .probe          = pcm512x_i2c_probe,
 72         .remove         = pcm512x_i2c_remove,
 73         .id_table       = pcm512x_i2c_id,
 74         .driver         = {
 75                 .name   = "pcm512x",
 76                 .of_match_table = of_match_ptr(pcm512x_of_match),
 77                 .acpi_match_table = ACPI_PTR(pcm512x_acpi_match),
 78                 .pm     = &pcm512x_pm_ops,
 79         },
 80 };
 81 
 82 module_i2c_driver(pcm512x_i2c_driver);
 83 
 84 MODULE_DESCRIPTION("ASoC PCM512x codec driver - I2C");
 85 MODULE_AUTHOR("Mark Brown <broonie@kernel.org>");
 86 MODULE_LICENSE("GPL v2");
 87 

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