diff options
Diffstat (limited to 'src/soc/intel/baytrail/acpi/dptf/charger.asl')
| -rw-r--r-- | src/soc/intel/baytrail/acpi/dptf/charger.asl | 43 |
1 files changed, 33 insertions, 10 deletions
diff --git a/src/soc/intel/baytrail/acpi/dptf/charger.asl b/src/soc/intel/baytrail/acpi/dptf/charger.asl index 7560f139be..7c7f62fb57 100644 --- a/src/soc/intel/baytrail/acpi/dptf/charger.asl +++ b/src/soc/intel/baytrail/acpi/dptf/charger.asl @@ -14,23 +14,46 @@ Device (TCHG) } } - Name (PPSS, Package () + /* Return charger performance states defined by mainboard */ + Method (PPSS) { - Package () { 0, 0, 0, 0, 0, 0x880, "mA", 0 }, /* 2.1A */ - Package () { 0, 0, 0, 0, 1, 0x800, "mA", 0 }, /* 2.0A */ - Package () { 0, 0, 0, 0, 2, 0x600, "mA", 0 }, /* 1.5A */ - Package () { 0, 0, 0, 0, 3, 0x400, "mA", 0 }, /* 1.0A */ - Package () { 0, 0, 0, 0, 4, 0x200, "mA", 0 }, /* 0.5A */ - Package () { 0, 0, 0, 0, 5, 0x000, "mA", 0 }, /* 0.0A */ - }) + Return (\_SB.CHPS) + } + /* Return maximum charger current limit */ Method (PPPC) { + /* Convert size of PPSS table to index */ + Store (SizeOf (\_SB.CHPS), Local0) + Decrement (Local0) + + /* Check if charging is disabled (AC removed) */ + If (LEqual (\PWRS, Zero)) { + /* Return last power state */ + Return (Local0) + } Else { + /* Return highest power state */ + Return (0) + } + Return (0) } - Method (SPPC, 1, Serialized) + /* Set charger current limit */ + Method (SPPC, 1) + { + /* Retrieve Control (index 4) for specified PPSS level */ + Store (DeRefOf (Index (DeRefOf (Index + (\_SB.CHPS, ToInteger (Arg0))), 4)), Local0) + + /* Pass Control value to EC to limit charging */ + \_SB.PCI0.LPCB.EC0.CHGS (Local0) + } + + /* Initialize charger participant */ + Method (INIT) { - /* TODO: Tell EC to limit battery charging */ + /* Disable charge limit */ + \_SB.PCI0.LPCB.EC0.CHGD () } } |