Commit 5d82a81e authored May 16, 2016 by Subbaraman Narayanamurthy

power: qpnp-fg: add support for restoring battery information



There is a requirement that if the same battery is removed and
inserted again, fuel gauge software should be able to restore the
battery state of charge (SOC) again. The implementation requires
that the userspace writes the stored battery information via
power supply properties battery_info_id and battery_info. Add
support for it.

Since the restoration should take place based on the specified
battery voltage or SOC limits, add the needed module parameters
(batt_valid_ocv, batt_range_pct) to support this requirement.

This feature itself is controlled by a device tree property
"qcom,fg-restore-batt-info".

CRs-Fixed: 1035402
Change-Id: Idf27dbb6a69f01f69e12c4e34cb4f4eb9c3f01e6
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>

parent 53160878

Documentation/devicetree/bindings/power/qpnp-fg.txt

+8 −0

Original line number	Diff line number	Diff line
		@@ -273,6 +273,14 @@ Parent node optional properties:
		default limit would be 150C.
		- qcom,fg-cc-soc-limit-pct: Percentage of CC_SOC before resetting
		FG and restore the full CC_SOC value.
		- qcom,fg-restore-batt-info: A boolean property to specify whether
		battery parameters needs to be
		restored. If this feature is enabled,
		then validating the battery parameters
		by OCV/battery SOC, validation range
		in percentage should be specified via
		appropriate module parameters to make
		it work properly.

		qcom,fg-soc node required properties:
		- reg : offset and length of the PMIC peripheral register map.

drivers/power/qpnp-fg.c

+481 −250

File changed.

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