drm/bridge: anx7625: Ensure bridge is suspended in disable()

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[ Upstream commit 4d5b7daa3c ]

Similar to commit 26db46bc9c ("drm/bridge: parade-ps8640: Ensure bridge
is suspended in .post_disable()"). Add a mutex to ensure that aux transfer
won't race with atomic_disable by holding the PM reference and prevent
the bridge from suspend.

Also we need to use pm_runtime_put_sync_suspend() to suspend the bridge
instead of idle with pm_runtime_put_sync().

Fixes: 3203e497eb ("drm/bridge: anx7625: Synchronously run runtime suspend.")
Fixes: adca62ec37 ("drm/bridge: anx7625: Support reading edid through aux channel")
Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
Tested-by: Xuxin Xiong <xuxinxiong@huaqin.corp-partner.google.com>
Reviewed-by: Pin-yen Lin <treapking@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240118015916.2296741-1-hsinyi@chromium.org
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Hsin-Yi Wang 2024-01-17 17:58:14 -08:00 • committed by Greg Kroah-Hartman

parent 9564767b67

commit a2fa86e2bb

2 changed files with 8 additions and 1 deletions

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7

drivers/gpu/drm/bridge/analogix/anx7625.c

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2

drivers/gpu/drm/bridge/analogix/anx7625.h

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