soundwire: qcom: add in-band wake up interrupt support

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Some of the Qualcomm SoundWire Controller instances like the ones that are
connected to RX path along with Headset connections support Waking up
Controller from Low power clock stop state using SoundWire In-band interrupt.
SoundWire Slave on the bus would initiate this by pulling the data line high,
while the clock is stopped.

Add support to this wake up interrupt.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20220228172528.3489-4-srinivas.kandagatla@linaro.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>

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Srinivas Kandagatla 2022-02-28 17:25:28 +00:00 • committed by Vinod Koul

parent c7449e766d

commit 04d46a7b38

1 changed files with 48 additions and 0 deletions

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drivers/soundwire/qcom.c

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