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authorsommerfeld <sommerfeld@NetBSD.org>2002-03-24 03:46:10 +0000
committersommerfeld <sommerfeld@NetBSD.org>2002-03-24 03:46:10 +0000
commitb8de140e4e277c34f4cf57d25018f2329ebc56c3 (patch)
tree498c74d958f6c32b3a50dbd38c3717c3a348c142 /sys/dev/microcode
parentaa1563948c47a00b3f02a769e19f4b4b34979fb8 (diff)
Prototype ACPI Control Method Battery driver.
ACPI defines two different battery device interfaces: "Control Method" batteries, in which AML methods are defined in order to get battery status and set battery alarm thresholds, and a "Smart Battery" device, which is an SMbus device accessed through the ACPI Embedded Controller device; this driver knows how to attach to the former sort of device. As a total kludge, since we haven't wired things up to sysmon/envsys yet, we report battery status through a once-per-minute kernel printf, so don't use this driver yet if you want your disk to spin down. Motivated by and tested on Sony PCG-R505TL laptop, which has nonfunctional APM. configure as: acpibat* at acpi ? Sample output: acpibat0 at acpi0: ACPI Battery acpibat0: Sony Corp. LION acpibat0: Design 38480mWh, Predicted 38480mWh Warn 120mWh Low 0mWh acpibat0: discharging: 15112mV cap 25480mWh (66%) rate 16849mW ... acpibat0: discharging: 15224mV cap 25070mWh (65%) rate 18405mW ... acpibat0: discharging: 15200mV cap 24310mWh (63%) rate 13771mW ... acpibat0: charging: 15768mV cap 23330mWh (60%) rate 20388mW
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