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ec/lenovo/h8: Support an optional battery page flip delay 

The Lenovo H8 battery interface uses a paged EC memory area.

Some Thinkpads (in particular the S230U) use a different EC controller
(ENE KB9012) with mostly compatible firmware, which requires an explicit
delay between writing the page register and reading the page data.

Change-Id: Iaeb8c4829efa29139396b519de803f10dd93f03f
Signed-off-by: Tobias Diedrich <ranma+coreboot@tdiedrich.de>
Reviewed-on: https://review.coreboot.org/18348
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Nico Huber <nico.h@gmx.de>
This commit is contained in:
Tobias Diedrich 2017-02-12 13:16:18 +01:00 committed by Martin Roth
parent b4d0757855
commit 1583dbd7b7
1 changed files with 24 additions and 8 deletions
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32
src/ec/lenovo/h8/acpi/battery.asl
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@ -84,6 +84,22 @@ Field (ERAM, ByteAcc, NoLock, Preserve)
BANA, 128
}
/*
* Switches the battery information page (16 bytes ERAM @0xa0) with an
* optional compile-time delay.
*
* Arg0:
* bit7-4: Battery number
* bit3-0: Information page number
*/
Method(BPAG, 1, NotSerialized)
{
Store(Arg0, PAGE)
#ifdef BATTERY_PAGE_DELAY_MS
Sleep(BATTERY_PAGE_DELAY_MS)
#endif
}
/* Arg0: Battery
* Arg1: Battery Status Package
* Arg2: charging
@ -93,9 +109,9 @@ Method(BSTA, 4, NotSerialized)
{
Acquire(ECLK, 0xffff)
Store(0, Local0)
Or(1, Arg0, PAGE)
^BPAG(Or(1, Arg0))
Store(BAMA, Local1)
Store(Arg0, PAGE) /* Battery dynamic information */
^BPAG(Arg0) /* Battery dynamic information */
/*
* Present rate is a 16bit signed int, positive while charging
@ -147,12 +163,12 @@ Method(BSTA, 4, NotSerialized)
Method(BINF, 2, NotSerialized)
{
Acquire(ECLK, 0xffff)
Or(1, Arg1, PAGE) /* Battery 0 static information */
^BPAG(Or(1, Arg1)) /* Battery 0 static information */
Xor(BAMA, 1, Index(Arg0, 0))
Store(BAMA, Local0)
Store(Arg1, PAGE)
^BPAG(Arg1)
Store(BAFC, Local2)
Or(2, Arg1, PAGE)
^BPAG(Or(2, Arg1))
Store(BADC, Local1)
if (Local0)
@ -177,13 +193,13 @@ Method(BINF, 2, NotSerialized)
}
Store (SERN, Index (Arg0, 10)) // Serial Number
Or(4, Arg1, PAGE)
^BPAG(Or(4, Arg1))
Name (TYPE, Buffer() { 0, 0, 0, 0, 0 })
Store(BATY, TYPE)
Store(TYPE, Index (Arg0, 11)) // Battery type
Or(5, Arg1, PAGE)
^BPAG(Or(5, Arg1))
Store(BAOE, Index (Arg0, 12)) // OEM information
Or(6, Arg1, PAGE)
^BPAG(Or(6, Arg1))
Store(BANA, Index (Arg0, 9)) // Model number
Release(ECLK)
Return (Arg0)