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path: root/sound/soc/soc-cache.c
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2010-02-04ASoC: Add a cache_sync bit to the CODEC structureMark Brown1-5/+15
Add a bit to the CODEC structure indicating if a cache sync is required. By default this will be set if a cache only write is done to a soc-cache register cache. This allows us to avoid syncing the cache back after using cache only writes if there were no changes. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-02-03ASoC: Allow CODECs to ask soc-cache to suppress physical writesMark Brown1-2/+24
Currently the soc-cache code will always write to the device, meaning that we need the device to be powered and active at pretty much all times the system is active. Allowing cache only writes lays some groundwork for future enhancements to allow devices to be put into a full off state when the audio subsystem is idle. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-01-27ASoC: ad1938: use soc-cache framework for codec registers accessBarry Song1-0/+108
Signed-off-by: Barry Song <Barry.Song@analog.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-01-27ASoC: ad1836: use soc-cache framework for codec registers accessBarry Song1-0/+67
Signed-off-by: Barry Song <Barry.Song@analog.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2009-12-31ASoC: soc-cache: cleanup training whitespace and coding styleBarry Song1-1/+1
Signed-off-by: Barry Song <21cnbao@gmail.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2009-09-21ASoC: Convert soc-cache to use C99 style initialisers for the tableMark Brown1-4/+14
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2009-09-07ASoC: Factor out I2C 8 bit address 8 bit data I/OJoonyoung Shim1-0/+30
This patch is for the AK4671 codec driver using this format. Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2009-08-11ASoC: fix I2C build errorsRandy Dunlap1-2/+2
Fix soc build errors when I2C is built as a loadable module: (.text+0x5d26b): undefined reference to `i2c_master_send' soc-cache.c:(.text+0x5d32d): undefined reference to `i2c_transfer' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2009-08-03ASoC: Factor out 7 bit register 9 bit data SPI writeMark Brown1-3/+36
This converts all the Wolfson drivers using this format (the only devices that do) except WM8753 to use it. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2009-08-03ASoC: Factor out I2C 8 bit address 16 bit data I/OMark Brown1-8/+71
As part of this refactoring the type of the CODEC hw_read operation is changed to match the regular read operation. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2009-08-03ASoC: Add I/O control bus information to factored out cache setupMark Brown1-1/+18
While writes tend to be able to use a fairly bus independant format to do the writes reads are all bus specific. To allow us to factor out this code include the bus type as a parameter when setting up the cache. Initially just use this to factor out hw_write_t for I2C. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2009-07-05ASoC: Begin to factor out register cache I/O functionsMark Brown1-0/+105
A lot of CODECs share the same register data formats and therefore replicate the code to manage access to and caching of the register map. In order to reduce code duplication centralised versions of this code will be introduced with drivers able to configure the use of the common code by calling the new snd_soc_codec_set_cache_io() API call during startup. As an initial user the 7 bit address/9 bit data format used by many Wolfson devices is supported for write only CODECs and the drivers with straightforward register cache implementations are converted to use it. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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