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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Driver for ADAU1361/ADAU1461/ADAU1761/ADAU1961 codec4 *5 * Copyright 2014 Analog Devices Inc.6 * Author: Lars-Peter Clausen <lars@metafoo.de>7 */8 9#include <linux/mod_devicetable.h>10#include <linux/module.h>11#include <linux/regmap.h>12#include <linux/spi/spi.h>13#include <sound/soc.h>14 15#include "adau1761.h"16 17static void adau1761_spi_switch_mode(struct device *dev)18{19 struct spi_device *spi = to_spi_device(dev);20 21 /*22 * To get the device into SPI mode CLATCH has to be pulled low three23 * times. Do this by issuing three dummy reads.24 */25 spi_w8r8(spi, 0x00);26 spi_w8r8(spi, 0x00);27 spi_w8r8(spi, 0x00);28}29 30static int adau1761_spi_probe(struct spi_device *spi)31{32 const struct spi_device_id *id = spi_get_device_id(spi);33 struct regmap_config config;34 35 if (!id)36 return -EINVAL;37 38 config = adau1761_regmap_config;39 config.val_bits = 8;40 config.reg_bits = 24;41 config.read_flag_mask = 0x1;42 43 return adau1761_probe(&spi->dev,44 devm_regmap_init_spi(spi, &config),45 id->driver_data, adau1761_spi_switch_mode);46}47 48static void adau1761_spi_remove(struct spi_device *spi)49{50 adau17x1_remove(&spi->dev);51}52 53static const struct spi_device_id adau1761_spi_id[] = {54 { "adau1361", ADAU1361 },55 { "adau1461", ADAU1761 },56 { "adau1761", ADAU1761 },57 { "adau1961", ADAU1361 },58 { }59};60MODULE_DEVICE_TABLE(spi, adau1761_spi_id);61 62#if defined(CONFIG_OF)63static const struct of_device_id adau1761_spi_dt_ids[] = {64 { .compatible = "adi,adau1361", },65 { .compatible = "adi,adau1461", },66 { .compatible = "adi,adau1761", },67 { .compatible = "adi,adau1961", },68 { },69};70MODULE_DEVICE_TABLE(of, adau1761_spi_dt_ids);71#endif72 73static struct spi_driver adau1761_spi_driver = {74 .driver = {75 .name = "adau1761",76 .of_match_table = of_match_ptr(adau1761_spi_dt_ids),77 },78 .probe = adau1761_spi_probe,79 .remove = adau1761_spi_remove,80 .id_table = adau1761_spi_id,81};82module_spi_driver(adau1761_spi_driver);83 84MODULE_DESCRIPTION("ASoC ADAU1361/ADAU1461/ADAU1761/ADAU1961 CODEC SPI driver");85MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");86MODULE_LICENSE("GPL");87