soundwire: bus: initialize bus clock base and scale registers

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The SoundWire 1.2 specification adds new registers to allow for
seamless clock changes while audio transfers are on-going. Program
them following the specification.

Note that dynamic clock changes are not supported for now, this only
adds the register initialization.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20200608205436.2402-5-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

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Pierre-Louis Bossart 2020-06-09 04:54:36 +08:00 • committed by Vinod Koul

parent b5924268d6

commit 29d158f906

2 changed files with 117 additions and 0 deletions

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107

drivers/soundwire/bus.c

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10

include/linux/soundwire/sdw_registers.h

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