From 125bc681bc5d8183594e30492f0345a61ab3cc94 Mon Sep 17 00:00:00 2001 From: Jeremy McDermond Date: Mon, 18 Apr 2016 17:24:06 -0700 Subject: ASoC: tlv320aic32x4: Add SPI support Add support for running the tlv32x4 control channel over SPI rather than I2C. Signed-off-by: Jeremy McDermond Signed-off-by: Mark Brown --- sound/soc/codecs/tlv320aic32x4-spi.c | 76 ++++++++++++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 sound/soc/codecs/tlv320aic32x4-spi.c (limited to 'sound/soc/codecs/tlv320aic32x4-spi.c') diff --git a/sound/soc/codecs/tlv320aic32x4-spi.c b/sound/soc/codecs/tlv320aic32x4-spi.c new file mode 100644 index 000000000000..724fcdd491b2 --- /dev/null +++ b/sound/soc/codecs/tlv320aic32x4-spi.c @@ -0,0 +1,76 @@ +/* + * linux/sound/soc/codecs/tlv320aic32x4-spi.c + * + * Copyright 2011 NW Digital Radio + * + * Author: Jeremy McDermond + * + * Based on sound/soc/codecs/wm8974 and TI driver for kernel 2.6.27. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include +#include + +#include "tlv320aic32x4.h" + +static int aic32x4_spi_probe(struct spi_device *spi) +{ + struct regmap *regmap; + struct regmap_config config; + + config = aic32x4_regmap_config; + config.reg_bits = 7; + config.pad_bits = 1; + config.val_bits = 8; + config.read_flag_mask = 0x01; + + regmap = devm_regmap_init_spi(spi, &config); + return aic32x4_probe(&spi->dev, regmap); +} + +static int aic32x4_spi_remove(struct spi_device *spi) +{ + return aic32x4_remove(&spi->dev); +} + +static const struct spi_device_id aic32x4_spi_id[] = { + { "tlv320aic32x4", 0 }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(spi, aic32x4_spi_id); + +static const struct of_device_id aic32x4_of_id[] = { + { .compatible = "ti,tlv320aic32x4", }, + { /* senitel */ } +}; +MODULE_DEVICE_TABLE(of, aic32x4_of_id); + +static struct spi_driver aic32x4_spi_driver = { + .driver = { + .name = "tlv320aic32x4", + .owner = THIS_MODULE, + .of_match_table = aic32x4_of_id, + }, + .probe = aic32x4_spi_probe, + .remove = aic32x4_spi_remove, + .id_table = aic32x4_spi_id, +}; + +module_spi_driver(aic32x4_spi_driver); + +MODULE_DESCRIPTION("ASoC TLV320AIC32x4 codec driver SPI"); +MODULE_AUTHOR("Jeremy McDermond "); +MODULE_LICENSE("GPL"); -- cgit v1.2.3