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authorMark Brown <broonie@kernel.org>2020-03-26 19:04:33 +0000
committerMark Brown <broonie@kernel.org>2020-03-26 19:04:33 +0000
commitb2fc1c08f74444b72f16bd5dc505eca33d1d6c6b (patch)
treef972c862883f4d025d5cc5e4267ea4bcbab822ef /include/sound/soc-acpi.h
parentMerge series "ASoC: Intel: machine driver updates" from Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>: (diff)
parentASoC: rt1308-sdw: use slot and rx_mask to configure stream (diff)
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Merge series "ASoC: rt1308-sdw: configure amplifier with set_tdm_slot()" from Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>:
When two (or more) amplifiers are on the same link, the integrator may: a) assign dedicated slots for each of the amplifiers. b) provide the same configuration to all amplifiers, and rely on additional controls/processing in the amplifier to generate different outputs. case a) was the initial direction for SoundWire and is required for amplifiers with limited capabilities, but to deal with orientation or 'posture' changes it's easier to implement case b) when the amplifier can deal with multiple channels. This patchset suggest the use of the set_tdm_slot() API to define which of the channels will be consumed by what amplifiers. This maps well with SoundWire's 'ChannelEnable' registers. The notion of slot_width is however irrelevant here and ignored, and SoundWire ports are typically single direction, so only one of the two masks shall be used. Pierre-Louis Bossart (2): ASoC: rt1308-sdw: add set_tdm_slot() support ASoC: rt1308-sdw: use slot and rx_mask to configure stream sound/soc/codecs/rt1308-sdw.c | 38 +++++++++++++++++++++++++++++++---- sound/soc/codecs/rt1308-sdw.h | 2 ++ 2 files changed, 36 insertions(+), 4 deletions(-) -- 2.20.1
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