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Šerif Rami
a2a2210f2c
This patch implements the full audio playback data path. It introduces the allocation, submission, and completion handling for isochronous playback and feedback URBs. The feedback URB completion handler is the core of the driver's clocking mechanism. It reads the number of samples consumed by the device and uses a pattern-based algorithm to adjust the size of outgoing playback packets. This keeps the host and device synchronized and prevents xruns. The patch also adds the necessary vendor and UAC control messages to configure the device's sample rate. The PCM trigger is updated to start and stop the playback and feedback URBs. Basic suspend and resume handlers are included to manage stream state across power cycles. Signed-off-by: Šerif Rami <ramiserifpersia@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://patch.msgid.link/20250814172222.9448-4-ramiserifpersia@gmail.com
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