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author | Takashi Iwai <tiwai@suse.de> | 2014-06-03 11:51:14 +0200 |
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committer | Takashi Iwai <tiwai@suse.de> | 2014-06-03 11:51:14 +0200 |
commit | 8743dcd6639c28204ac03fb3e9db7932e3d85418 (patch) | |
tree | 53b80846cf6731ddb196d522ed2bbf0f76da8344 /sound/soc/codecs/adau1781-spi.c | |
parent | Merge branch 'for-linus' into for-next (diff) | |
parent | ASoC: free jack GPIOs before the sound card is freed (diff) | |
download | linux-8743dcd6639c28204ac03fb3e9db7932e3d85418.tar.xz linux-8743dcd6639c28204ac03fb3e9db7932e3d85418.zip |
Merge tag 'asoc-v3.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-next
ASoC: Final updates for v3.16
A few more updates from the last week of development, nothing too
exciting. Highlights include:
- GPIO descriptor support for jacks
- More updates and fixes to the Freescale SSI, Intel and rsnd drivers.
- New drivers for Analog Devices ADAU1361, ADAU1381, ADAU1761 and
ADAU1781, and Realtek RT5677.
Diffstat (limited to 'sound/soc/codecs/adau1781-spi.c')
-rw-r--r-- | sound/soc/codecs/adau1781-spi.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/sound/soc/codecs/adau1781-spi.c b/sound/soc/codecs/adau1781-spi.c new file mode 100644 index 000000000000..194686716bbe --- /dev/null +++ b/sound/soc/codecs/adau1781-spi.c @@ -0,0 +1,75 @@ +/* + * Driver for ADAU1381/ADAU1781 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 "adau1781.h" + +static void adau1781_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 adau1781_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 = adau1781_regmap_config; + config.val_bits = 8; + config.reg_bits = 24; + config.read_flag_mask = 0x1; + + return adau1781_probe(&spi->dev, + devm_regmap_init_spi(spi, &config), + id->driver_data, adau1781_spi_switch_mode); +} + +static int adau1781_spi_remove(struct spi_device *spi) +{ + snd_soc_unregister_codec(&spi->dev); + return 0; +} + +static const struct spi_device_id adau1781_spi_id[] = { + { "adau1381", ADAU1381 }, + { "adau1781", ADAU1781 }, + { } +}; +MODULE_DEVICE_TABLE(spi, adau1781_spi_id); + +static struct spi_driver adau1781_spi_driver = { + .driver = { + .name = "adau1781", + .owner = THIS_MODULE, + }, + .probe = adau1781_spi_probe, + .remove = adau1781_spi_remove, + .id_table = adau1781_spi_id, +}; +module_spi_driver(adau1781_spi_driver); + +MODULE_DESCRIPTION("ASoC ADAU1381/ADAU1781 CODEC SPI driver"); +MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); +MODULE_LICENSE("GPL"); |