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author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-08 22:31:16 +0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-08 22:31:16 +0400 |
commit | 3f17ea6dea8ba5668873afa54628a91aaa3fb1c0 (patch) | |
tree | afbeb2accd4c2199ddd705ae943995b143a0af02 /sound/soc/codecs/adau1761-spi.c | |
parent | 1860e379875dfe7271c649058aeddffe5afd9d0d (diff) | |
parent | 1a5700bc2d10cd379a795fd2bb377a190af5acd4 (diff) | |
download | linux-3f17ea6dea8ba5668873afa54628a91aaa3fb1c0.tar.xz |
Merge branch 'next' (accumulated 3.16 merge window patches) into master
Now that 3.15 is released, this merges the 'next' branch into 'master',
bringing us to the normal situation where my 'master' branch is the
merge window.
* accumulated work in next: (6809 commits)
ufs: sb mutex merge + mutex_destroy
powerpc: update comments for generic idle conversion
cris: update comments for generic idle conversion
idle: remove cpu_idle() forward declarations
nbd: zero from and len fields in NBD_CMD_DISCONNECT.
mm: convert some level-less printks to pr_*
MAINTAINERS: adi-buildroot-devel is moderated
MAINTAINERS: add linux-api for review of API/ABI changes
mm/kmemleak-test.c: use pr_fmt for logging
fs/dlm/debug_fs.c: replace seq_printf by seq_puts
fs/dlm/lockspace.c: convert simple_str to kstr
fs/dlm/config.c: convert simple_str to kstr
mm: mark remap_file_pages() syscall as deprecated
mm: memcontrol: remove unnecessary memcg argument from soft limit functions
mm: memcontrol: clean up memcg zoneinfo lookup
mm/memblock.c: call kmemleak directly from memblock_(alloc|free)
mm/mempool.c: update the kmemleak stack trace for mempool allocations
lib/radix-tree.c: update the kmemleak stack trace for radix tree allocations
mm: introduce kmemleak_update_trace()
mm/kmemleak.c: use %u to print ->checksum
...
Diffstat (limited to 'sound/soc/codecs/adau1761-spi.c')
-rw-r--r-- | sound/soc/codecs/adau1761-spi.c | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/sound/soc/codecs/adau1761-spi.c b/sound/soc/codecs/adau1761-spi.c new file mode 100644 index 000000000000..cce2f11f1ffb --- /dev/null +++ b/sound/soc/codecs/adau1761-spi.c @@ -0,0 +1,77 @@ +/* + * Driver for ADAU1761/ADAU1461/ADAU1761/ADAU1961 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 "adau1761.h" + +static void adau1761_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 adau1761_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 = adau1761_regmap_config; + config.val_bits = 8; + config.reg_bits = 24; + config.read_flag_mask = 0x1; + + return adau1761_probe(&spi->dev, + devm_regmap_init_spi(spi, &config), + id->driver_data, adau1761_spi_switch_mode); +} + +static int adau1761_spi_remove(struct spi_device *spi) +{ + snd_soc_unregister_codec(&spi->dev); + return 0; +} + +static const struct spi_device_id adau1761_spi_id[] = { + { "adau1361", ADAU1361 }, + { "adau1461", ADAU1761 }, + { "adau1761", ADAU1761 }, + { "adau1961", ADAU1361 }, + { } +}; +MODULE_DEVICE_TABLE(spi, adau1761_spi_id); + +static struct spi_driver adau1761_spi_driver = { + .driver = { + .name = "adau1761", + .owner = THIS_MODULE, + }, + .probe = adau1761_spi_probe, + .remove = adau1761_spi_remove, + .id_table = adau1761_spi_id, +}; +module_spi_driver(adau1761_spi_driver); + +MODULE_DESCRIPTION("ASoC ADAU1361/ADAU1461/ADAU1761/ADAU1961 CODEC SPI driver"); +MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); +MODULE_LICENSE("GPL"); |