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amplifier feedback is not modeled as being dependent on any active
output. Even when there is no playback happening, parts of the graph,
specifically the IV sense->speaker protection->output remains active
and this prevents the DSP from entering low-power states.
This patch suggest a machine driver level approach where the speaker
pins are enabled/disabled dynamically depending on stream start/stop
events. DPAM graph representations show the feedback loop is indeed
disabled and low-power states can be reached.
Signed-off-by: Jenny TC <jenny.tc@intel.com>
Signed-off-by: Harshapriya.n <harshapriya.n@intel.com>
Signed-off-by: Mac Chiang <mac.chiang@intel.com>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
53fdea9604