From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- sound/soc/codecs/adau1372-spi.c | 58 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 sound/soc/codecs/adau1372-spi.c (limited to 'sound/soc/codecs/adau1372-spi.c') diff --git a/sound/soc/codecs/adau1372-spi.c b/sound/soc/codecs/adau1372-spi.c new file mode 100644 index 000000000..51298e00f --- /dev/null +++ b/sound/soc/codecs/adau1372-spi.c @@ -0,0 +1,58 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Driver for ADAU1372 codec + * + * Copyright 2016 Analog Devices Inc. + * Author: Lars-Peter Clausen + */ + +#include +#include +#include +#include +#include + +#include "adau1372.h" + +static void adau1372_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 adau1372_spi_probe(struct spi_device *spi) +{ + struct regmap_config config; + + config = adau1372_regmap_config; + config.read_flag_mask = 0x1; + + return adau1372_probe(&spi->dev, + devm_regmap_init_spi(spi, &config), adau1372_spi_switch_mode); +} + +static const struct spi_device_id adau1372_spi_id[] = { + { "adau1372", 0 }, + { } +}; +MODULE_DEVICE_TABLE(spi, adau1372_spi_id); + +static struct spi_driver adau1372_spi_driver = { + .driver = { + .name = "adau1372", + }, + .probe = adau1372_spi_probe, + .id_table = adau1372_spi_id, +}; +module_spi_driver(adau1372_spi_driver); + +MODULE_DESCRIPTION("ASoC ADAU1372 CODEC SPI driver"); +MODULE_AUTHOR("Lars-Peter Clausen "); +MODULE_LICENSE("GPL v2"); -- cgit v1.2.3