2 * Driver for ADAU1381/ADAU1781 CODEC
4 * Copyright 2014 Analog Devices Inc.
7 * Licensed under the GPL-2.
10 #include <linux/mod_devicetable.h>
11 #include <linux/module.h>
12 #include <linux/regmap.h>
13 #include <linux/spi/spi.h>
14 #include <sound/soc.h>
18 static void adau1781_spi_switch_mode(struct device *dev)
20 struct spi_device *spi = to_spi_device(dev);
23 * To get the device into SPI mode CLATCH has to be pulled low three
24 * times. Do this by issuing three dummy reads.
31 static int adau1781_spi_probe(struct spi_device *spi)
33 const struct spi_device_id *id = spi_get_device_id(spi);
34 struct regmap_config config;
39 config = adau1781_regmap_config;
42 config.read_flag_mask = 0x1;
44 return adau1781_probe(&spi->dev,
45 devm_regmap_init_spi(spi, &config),
46 id->driver_data, adau1781_spi_switch_mode);
49 static int adau1781_spi_remove(struct spi_device *spi)
51 adau17x1_remove(&spi->dev);
55 static const struct spi_device_id adau1781_spi_id[] = {
56 { "adau1381", ADAU1381 },
57 { "adau1781", ADAU1781 },
60 MODULE_DEVICE_TABLE(spi, adau1781_spi_id);
62 #if defined(CONFIG_OF)
63 static const struct of_device_id adau1781_spi_dt_ids[] = {
64 { .compatible = "adi,adau1381", },
65 { .compatible = "adi,adau1781", },
68 MODULE_DEVICE_TABLE(of, adau1781_spi_dt_ids);
71 static struct spi_driver adau1781_spi_driver = {
74 .of_match_table = of_match_ptr(adau1781_spi_dt_ids),
76 .probe = adau1781_spi_probe,
77 .remove = adau1781_spi_remove,
78 .id_table = adau1781_spi_id,
80 module_spi_driver(adau1781_spi_driver);
82 MODULE_DESCRIPTION("ASoC ADAU1381/ADAU1781 CODEC SPI driver");
84 MODULE_LICENSE("GPL");