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58 lines
1.3 KiB
58 lines
1.3 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Driver for ADAU1372 codec |
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* |
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* Copyright 2016 Analog Devices Inc. |
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* Author: Lars-Peter Clausen <[email protected]> |
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*/ |
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#include <linux/mod_devicetable.h> |
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#include <linux/module.h> |
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#include <linux/regmap.h> |
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#include <linux/spi/spi.h> |
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#include <sound/soc.h> |
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#include "adau1372.h" |
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static void adau1372_spi_switch_mode(struct device *dev) |
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{ |
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struct spi_device *spi = to_spi_device(dev); |
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/* |
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* To get the device into SPI mode CLATCH has to be pulled low three |
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* times. Do this by issuing three dummy reads. |
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*/ |
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spi_w8r8(spi, 0x00); |
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spi_w8r8(spi, 0x00); |
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spi_w8r8(spi, 0x00); |
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} |
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static int adau1372_spi_probe(struct spi_device *spi) |
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{ |
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struct regmap_config config; |
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config = adau1372_regmap_config; |
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config.read_flag_mask = 0x1; |
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return adau1372_probe(&spi->dev, |
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devm_regmap_init_spi(spi, &config), adau1372_spi_switch_mode); |
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} |
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static const struct spi_device_id adau1372_spi_id[] = { |
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{ "adau1372", 0 }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(spi, adau1372_spi_id); |
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static struct spi_driver adau1372_spi_driver = { |
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.driver = { |
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.name = "adau1372", |
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}, |
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.probe = adau1372_spi_probe, |
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.id_table = adau1372_spi_id, |
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}; |
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module_spi_driver(adau1372_spi_driver); |
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MODULE_DESCRIPTION("ASoC ADAU1372 CODEC SPI driver"); |
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MODULE_AUTHOR("Lars-Peter Clausen <[email protected]>"); |
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MODULE_LICENSE("GPL v2");
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