2023-05-05 12:53:02 +02:00
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#!/bin/sh -eu
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2023-06-28 11:08:53 +02:00
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if ! lsmod | grep i2c_dev >/dev/null 2>&1; then
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2023-05-05 12:53:02 +02:00
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echo "kernel module i2c-dev must be loaded"
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exit
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fi
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2023-06-28 11:08:53 +02:00
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if ! command -v i2cdump >/dev/null 2>&1; then
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2023-05-05 12:53:02 +02:00
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echo "i2cdump from i2c-tools must be installed"
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exit
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fi
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for connector in $(find /sys/class/drm/ -maxdepth 1 -name 'card[0-9]-*'); do
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bus=$(find "$connector/" -maxdepth 1 -mindepth 1 -type d -name 'i2c-*' -print -quit | sed -n 's/.*\/i2c\-\(.*\)/\1/p')
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if [ "$bus" = "" ]; then
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bus=$(find "$connector/ddc/i2c-dev/" -maxdepth 1 -mindepth 1 -type d -name 'i2c-*' -print -quit | sed -n 's/.*\/i2c\-\(.*\)/\1/p')
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fi
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if [ "$bus" = "" ]; then
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echo "Connector $(basename $connector) does not have an i2c bus. Skipping."
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continue
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fi
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echo "Dumping connector $(basename $connector) i2c bus address 0x50"
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i2cdump -y $bus 0x50 b
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echo "Dumping connector $(basename $connector) i2c bus address 0x51"
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i2cdump -y $bus 0x51 b
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echo "Dumping connector $(basename $connector) i2c bus address 0x54"
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i2cdump -y $bus 0x54 b
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echo "Dumping connector $(basename $connector) i2c bus address 0x55"
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i2cdump -y $bus 0x55 b
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done
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