Archived
39 lines
1.3 KiB
Bash
39 lines
1.3 KiB
Bash
#!/bin/bash
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# Handle camera service around suspend/resume.
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#
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# On resume the IPU7 firmware re-authenticates (CSE authenticate_run),
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# but the ov08x40 sensor is not re-bound to the media-controller graph.
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# libcamhal then reports "No sensors available", icamerasrc fails to
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# register properties, and /dev/video50 stays empty — the camera looks
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# dead to every app until reboot.
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#
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# Workaround: after resume, unload + reload ov08x40 and intel_ipu7_isys
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# so isys re-probes the sensor via ipu_bridge.
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#
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# DO NOT unload intel_ipu7_isys pre-suspend: s2idle wake requires the
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# IPU7 driver to be attached, and unloading it before suspend hangs the
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# machine on wake.
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#
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# The post-resume work runs via systemd-run so it doesn't block the
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# lock-screen password prompt while modules settle.
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case "$1" in
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pre)
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systemctl stop v4l2-relayd@ipu7.service 2>/dev/null || true
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;;
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post)
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systemd-run --no-block --unit=camera-resume bash -c '
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rmmod ov08x40 2>/dev/null || true
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rmmod intel_ipu7_isys 2>/dev/null || true
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sleep 1
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modprobe intel_ipu7_isys 2>/dev/null
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sleep 1
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modprobe ov08x40 2>/dev/null
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systemctl reset-failed v4l2-relayd@ipu7.service 2>/dev/null || true
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systemctl start v4l2-relayd@ipu7.service 2>/dev/null || true
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'
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;;
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esac
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exit 0
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