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ec/system76/ec: acpi: Implement _BIX method 

Implement _BIX method to expose battery cycle count.

Requires an EC version with support for cycle count.

Change-Id: I5f7a1d275caff59960aaf9c39b9c707970350987
Signed-off-by: Ian Douglas Scott <idscott@system76.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57678
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jeremy Soller <jeremy@system76.com>
This commit is contained in:
Ian Douglas Scott 2021-09-15 09:27:49 -06:00 committed by Felix Held
parent 6260bf712a
commit 8031abfcc2
2 changed files with 79 additions and 0 deletions
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78
src/ec/system76/ec/acpi/battery.asl
View File

@ -96,6 +96,84 @@ Device (BAT0)
Return (PBIF) /* \_SB_.BAT0.PBIF */
}
Name (PBIX, Package ()
{
0, // 0 - Revision
1, // 1 - Power Unit: mAh
0xFFFFFFFF, // 2 - Design Capacity
0xFFFFFFFF, // 3 - Last Full Charge Capacity
1, // 4 - Battery Technology: Rechargeable
0xFFFFFFFF, // 5 - Design Voltage
0, // 6 - Design Capacity of Warning
0, // 7 - Design Capacity of Low
0, // 8 - Cycle Count
98000, // 9 - Measurement Accuracy
0xFFFFFFFF, // 10 - Max Sampling Time
0xFFFFFFFF, // 11 - Min Sampling Time
0xFFFFFFFF, // 12 - Max Averaging Interval
0xFFFFFFFF, // 13 - Min Averaging Interval
0x40, // 14 - Battery Capacity Granularity 1
0x40, // 15 - Battery Capacity Granularity 2
" ", // 16 - Model Number
" ", // 17 - Serial Number
" ", // 18 - Battery Type
" " // 19 - OEM Information
})
Method (IVBX, 0, NotSerialized)
{
PBIX [2] = 0xFFFFFFFF
PBIX [3] = 0xFFFFFFFF
PBIX [5] = 0xFFFFFFFF
PBIX [16] = " "
PBIX [17] = " "
PBIX [18] = " "
PBIX [19] = " "
BFCC = 0
}
Method (UPBX, 0, NotSerialized)
{
If (^^PCI0.LPCB.EC0.BAT0)
{
Local0 = (^^PCI0.LPCB.EC0.BDC0 & 0xFFFF)
PBIX [2] = Local0
Local0 = (^^PCI0.LPCB.EC0.BFC0 & 0xFFFF)
PBIX [3] = Local0
BFCC = Local0
Local0 = (^^PCI0.LPCB.EC0.BDV0 & 0xFFFF)
PBIX [5] = Local0
Local0 = (^^PCI0.LPCB.EC0.BCW0 & 0xFFFF)
PBIX [6] = Local0
Local0 = (^^PCI0.LPCB.EC0.BCL0 & 0xFFFF)
PBIX [7] = Local0
LOCAL0 = ^^PCI0.LPCB.EC0.CYC0
PBIX [8] = LOCAL0
PBIX [16] = "BAT"
PBIX [17] = "0001"
PBIX [18] = "LION"
PBIX [19] = "Notebook"
}
Else
{
IVBX ()
}
}
// _BIX: Battery Information Extended
Method (_BIX, 0, NotSerialized)
{
If (^^PCI0.LPCB.EC0.ECOK)
{
UPBX ()
}
Else
{
IVBX ()
}
Return (PBIX) /* \_SB_.BAT0.PBIX */
}
Name (PBST, Package (0x04)
{
Zero, // 0 - Battery state

1
src/ec/system76/ec/acpi/ec_ram.asl
View File

@ -28,6 +28,7 @@ Field (ERAM, ByteAcc, Lock, Preserve)
Offset (0x3A),
BCW0, 32,
BCL0, 32,
CYC0, 16, // Battery cycle count
Offset (0x68),
ECOS, 8, // Detected OS, 0 = no ACPI, 1 = ACPI but no driver, 2 = ACPI with driver
Offset (0xC8),