diff options
author | Victor Lowther <victor.lowther@gmail.com> | 2010-06-03 16:30:32 -0500 |
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committer | Victor Lowther <victor.lowther@gmail.com> | 2010-06-05 13:42:46 -0500 |
commit | 381ff7b01f459e5767d927386dad48e52d2c5f02 (patch) | |
tree | 061be870dbb169bac14d9eb9f10bd5fb57af454a /pm | |
parent | 43e64366c2c5c9831c041fb571bf7e92ad3598c2 (diff) |
Add sata_alpm control hook.
Diffstat (limited to 'pm')
-rw-r--r-- | pm/power.d/sata_alpm | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/pm/power.d/sata_alpm b/pm/power.d/sata_alpm new file mode 100644 index 0000000..e102998 --- /dev/null +++ b/pm/power.d/sata_alpm @@ -0,0 +1,31 @@ +#!/bin/sh + +. "${PM_FUNCTIONS}" + +SATA_ALPM_ENABLE=${SATA_ALPM_ENABLE:-true} + +help() { +cat <<EOF +SATA link ALPM parameters: + +SATA_ALPM_ENABLE = whether to use SATA ALPM on battery. +Defaults to "true". + +EOF +} + +set_sata_alpm() { + for f in /sys/class/scsi_host/host*/link_power_management_policy; do + [ -w "$f" ] || continue + echo "$1" > "$f" + done +} + +case $1 in + true) [ "$SATA_ALPM_ENABLE" = true ] && set_sata_alpm min_power;; + false) set_sata_alpm max_performance;; + help) help;; + *) exit $NA;; +esac + +exit 0
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