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Message-ID: <26eb7093-d777-4071-b539-8e2141117dae@rowland.harvard.edu>
Date: Thu, 25 Jul 2024 11:49:22 -0400
From: Alan Stern <stern@...land.harvard.edu>
To: Daniel Scally <djrscally@...il.com>
Cc: Kernel development list <linux-kernel@...r.kernel.org>
Subject: Intel SkyLake ACPI INT3472 not working on Dell Latitude 7450
Dan:
The 6.9 kernel fails to activate the webcam on my new laptop. Comparing
dmesg logs with the webcam enabled vs. disabled in the BIOS shows
that the difference lies in the INT3472 driver. With the camera
enabled, the following messages appear:
[ 5.128560] int3472-discrete INT3472:01: GPIO type 0x12 unknown; the sensor may not work
[ 5.128588] int3472-discrete INT3472:01: cannot find GPIO chip INTC10D1:00, deferring
[ 5.135938] int3472-discrete INT3472:01: GPIO type 0x12 unknown; the sensor may not work
[ 5.135960] int3472-discrete INT3472:01: cannot find GPIO chip INTC10D1:00, deferring
[ 5.141230] int3472-discrete INT3472:0c: GPIO type 0x12 unknown; the sensor may not work
[ 5.141243] int3472-discrete INT3472:0c: unknown \_SB.GPI0 pin number mismatch _DSM 17 resource 369
[ 5.141245] int3472-discrete INT3472:0c: GPIO type 0x02 unknown; the sensor may not work
[ 5.148382] int3472-discrete INT3472:01: GPIO type 0x12 unknown; the sensor may not work
[ 5.148413] int3472-discrete INT3472:01: cannot find GPIO chip INTC10D1:00, deferring
... many repeats ...
[ 17.421707] platform INT3472:01: deferred probe pending: int3472-discrete: Failed to get GPIO
Can you say what's needed to get this working, or suggest a more
appropriate person to ask?
Thanks,
Alan Stern
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