74 lines
1.5 KiB
Bash
74 lines
1.5 KiB
Bash
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#!/bin/sh
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set -e
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usage="Usage: $0 [<delay seconds> [(0|90|128|270)]]\n"
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err_msgs=
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command -v chvt >/dev/null || err_msgs="${err_msgs}"'Need `chvt`\n'
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command -v openvt >/dev/null || err_msgs="${err_msgs}"'Need `openvt`\n'
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command -v fgconsole >/dev/null || err_msgs="${err_msgs}"'Need `fgconsole`\n'
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[ -n "$err_msgs" ] && err_msgs="${err_msgs}"'e.g. install the `kbd` package\n'
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[ -x build/gfx_test ] || \
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err_msgs="${err_msgs}"'Please run from *libgfxinit* source dir and build `gfx_test` first.\n'
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[ "$#" -gt 2 ] && err_msgs="${err_msgs}${usage}"
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if [ -n "$err_msgs" ]; then
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printf "$err_msgs"
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exit 1
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fi
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if [ "$#" -lt 1 ]; then
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# default duration of 5s
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set 5
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fi
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reload_i915=0
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prepare_vt() {
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# switch VT, we might be in X
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orig_vt=`fgconsole`
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openvt -s -- true
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# poll until the VT switch is done
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while [ `fgconsole` -eq $orig_vt ]; do :; done
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# take i915 out of charge
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for vtcon in /sys/devices/virtual/vtconsole/vtcon*; do
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if grep -q frame\ buffer $vtcon/name >/dev/null 2>&1; then
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echo 0 >$vtcon/bind
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break
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fi
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done
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# try unloading it
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if modprobe -r i915 >/dev/null 2>&1; then
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reload_i915=1
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fi
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}
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restore_vt() {
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# reload i915
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if [ $reload_i915 -eq 1 ]; then
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modprobe i915 modeset=1
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else
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# put i915 back in charge
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for vtcon in /sys/devices/virtual/vtconsole/vtcon*; do
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if grep -q dummy $vtcon/name >/dev/null 2>&1; then
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echo 0 >$vtcon/bind
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break
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fi
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done
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fi
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# return to original VT
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chvt $orig_vt
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}
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prepare_vt
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build/gfx_test "$@" || true
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restore_vt
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