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https://github.com/koreader/koreader
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cb2314d11b
* Run grep against /proc/modules directly instead of forking to lsmod * Revamp the CPUFreq governor choice logic I finally figured out why the scaling on the H2O was so wonky: Because it relies on an obscure i.MX hardware feature called DVFS, and it gets flipped for mysterious workaround-y reasons depending on Wi-Fi state... * Start playing with conservative, because just staying pegged at max clock is entirely stupid. And DVFS is extremely conservative, it needs somewhat sustained load to clock up... * Take care of the DVFS switcheroo in the Wi-Fi scripts
41 lines
1.6 KiB
Bash
Executable File
41 lines
1.6 KiB
Bash
Executable File
#!/bin/sh
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# NOTE: Close any non-standard fds, so that it doesn't come back to bite us in the ass with USBMS later...
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for fd in /proc/"$$"/fd/*; do
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fd_id="$(basename "${fd}")"
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if [ -e "${fd}" ] && [ "${fd_id}" -gt 2 ]; then
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# NOTE: dash (meaning, in turn, busybox's ash, uses fd 10+ open to /dev/tty or $0 (w/ CLOEXEC))
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fd_path="$(readlink -f "${fd}")"
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if [ "${fd_path}" != "/dev/tty" ] && [ "${fd_path}" != "$(readlink -f "${0}")" ] && [ "${fd}" != "${fd_path}" ]; then
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eval "exec ${fd_id}>&-"
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echo "[enable-wifi.sh] Closed fd ${fd_id} -> ${fd_path}"
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fi
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fi
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done
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# Load wifi modules and enable wifi.
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if ! grep -q "sdio_wifi_pwr" "/proc/modules"; then
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if [ -e "/drivers/${PLATFORM}/wifi/sdio_wifi_pwr.ko" ]; then
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# Handle the shitty DVFS switcheroo...
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if [ -n "${CPUFREQ_DVFS}" ]; then
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echo "userspace" >"/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor"
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echo "1" >"/sys/devices/platform/mxc_dvfs_core.0/enable"
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fi
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insmod "/drivers/${PLATFORM}/wifi/sdio_wifi_pwr.ko"
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fi
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fi
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# Moar sleep!
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usleep 250000
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# NOTE: Used to be exported in WIFI_MODULE_PATH before FW 4.23
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grep -q "${WIFI_MODULE}" "/proc/modules" || insmod "/drivers/${PLATFORM}/wifi/${WIFI_MODULE}.ko"
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# Race-y as hell, don't try to optimize this!
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sleep 1
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ifconfig "${INTERFACE}" up
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[ "${WIFI_MODULE}" != "8189fs" ] && [ "${WIFI_MODULE}" != "8192es" ] && wlarm_le -i "${INTERFACE}" up
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pkill -0 wpa_supplicant ||
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env -u LD_LIBRARY_PATH \
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wpa_supplicant -D wext -s -i "${INTERFACE}" -c /etc/wpa_supplicant/wpa_supplicant.conf -O /var/run/wpa_supplicant -B
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