| /* |
| * Driver for ADAU1361/ADAU1461/ADAU1761/ADAU1961 codec |
| * |
| * Copyright 2014 Analog Devices Inc. |
| * Author: Lars-Peter Clausen <lars@metafoo.de> |
| * |
| * Licensed under the GPL-2. |
| */ |
| |
| #include <linux/mod_devicetable.h> |
| #include <linux/module.h> |
| #include <linux/regmap.h> |
| #include <linux/spi/spi.h> |
| #include <sound/soc.h> |
| |
| #include "adau1761.h" |
| |
| static void adau1761_spi_switch_mode(struct device *dev) |
| { |
| struct spi_device *spi = to_spi_device(dev); |
| |
| /* |
| * To get the device into SPI mode CLATCH has to be pulled low three |
| * times. Do this by issuing three dummy reads. |
| */ |
| spi_w8r8(spi, 0x00); |
| spi_w8r8(spi, 0x00); |
| spi_w8r8(spi, 0x00); |
| } |
| |
| static int adau1761_spi_probe(struct spi_device *spi) |
| { |
| const struct spi_device_id *id = spi_get_device_id(spi); |
| struct regmap_config config; |
| |
| if (!id) |
| return -EINVAL; |
| |
| config = adau1761_regmap_config; |
| config.val_bits = 8; |
| config.reg_bits = 24; |
| config.read_flag_mask = 0x1; |
| |
| return adau1761_probe(&spi->dev, |
| devm_regmap_init_spi(spi, &config), |
| id->driver_data, adau1761_spi_switch_mode); |
| } |
| |
| static int adau1761_spi_remove(struct spi_device *spi) |
| { |
| adau17x1_remove(&spi->dev); |
| return 0; |
| } |
| |
| static const struct spi_device_id adau1761_spi_id[] = { |
| { "adau1361", ADAU1361 }, |
| { "adau1461", ADAU1761 }, |
| { "adau1761", ADAU1761 }, |
| { "adau1961", ADAU1361 }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(spi, adau1761_spi_id); |
| |
| #if defined(CONFIG_OF) |
| static const struct of_device_id adau1761_spi_dt_ids[] = { |
| { .compatible = "adi,adau1361", }, |
| { .compatible = "adi,adau1461", }, |
| { .compatible = "adi,adau1761", }, |
| { .compatible = "adi,adau1961", }, |
| { }, |
| }; |
| MODULE_DEVICE_TABLE(of, adau1761_spi_dt_ids); |
| #endif |
| |
| static struct spi_driver adau1761_spi_driver = { |
| .driver = { |
| .name = "adau1761", |
| .of_match_table = of_match_ptr(adau1761_spi_dt_ids), |
| }, |
| .probe = adau1761_spi_probe, |
| .remove = adau1761_spi_remove, |
| .id_table = adau1761_spi_id, |
| }; |
| module_spi_driver(adau1761_spi_driver); |
| |
| MODULE_DESCRIPTION("ASoC ADAU1361/ADAU1461/ADAU1761/ADAU1961 CODEC SPI driver"); |
| MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); |
| MODULE_LICENSE("GPL"); |