ALSA: hda: Introduce flags to force commands via PIO instead of CORB

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Add AZX_DCAPS_PIO_COMMANDS quirk (bit 31) and use_pio_for_commands flag to
be able to select PIO mode as alternative for CORB based command sending
while retaining the RIRB functionality to receive unsolicited responses.

This mode differs from the azx single_cmd mode when RIRB is disabled.

The mixed mode is needed on Lunar Lake family because it is recommended to
use Immediate Command Response (PIO mode) instead of CORB for HDA commands.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Liam Girdwood <liam.r.girdwood@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Message-ID: <20240409083812.14001-2-peter.ujfalusi@linux.intel.com>

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Peter Ujfalusi 2024-04-09 11:38:08 +03:00 • committed by Takashi Iwai

parent 5738cf65e8

commit a1de26c0b7

2 changed files with 2 additions and 0 deletions

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include/sound/hdaudio.h

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sound/pci/hda/hda_controller.h

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