Unverified Commit f5eb9503 authored by Richard Fitzgerald's avatar Richard Fitzgerald Committed by Mark Brown
Browse files

ASoC: cs35l56: Wait for control port ready during system-resume 



The CS35L56 could be hard-reset during a system suspend-resume cycle,
either by the codec driver, in cs35l56_system_resume_early(), or by ACPI.
After a hard reset the driver must wait for the control port to be ready
(datasheet tIRS time) before attempting to access the CS35L56.

Signed-off-by: default avatarRichard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20230808164702.21272-4-rf@opensource.cirrus.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 85373458

sound/soc/codecs/cs35l56.c

+6 −0
Original line number Diff line number Diff line
@@ -952,6 +952,12 @@ int cs35l56_system_resume(struct device *dev) 


	dev_dbg(dev, "system_resume\n");



	/*

	 * We might have done a hard reset or the CS35L56 was power-cycled

	 * so wait for control port to be ready.

	 */

	cs35l56_wait_control_port_ready();



	/* Undo pm_runtime_force_suspend() before re-enabling the irq */

	ret = pm_runtime_force_resume(dev);

	if (cs35l56->base.irq)