diff options
Diffstat (limited to 'src/ec/google/wilco/acpi/ucsi.asl')
| -rw-r--r-- | src/ec/google/wilco/acpi/ucsi.asl | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/src/ec/google/wilco/acpi/ucsi.asl b/src/ec/google/wilco/acpi/ucsi.asl new file mode 100644 index 0000000000..f69e5924e7 --- /dev/null +++ b/src/ec/google/wilco/acpi/ucsi.asl @@ -0,0 +1,157 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2019 Google LLC + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +Device (UCSI) +{ + Name (_HID, "GOOG000E") + Name (_CID, EisaId ("PNP0CA0")) + Name (_DDN, "Wilco EC UCSI") + Name (_UID, One) + Name (_ADR, Zero) + Name (_STA, 0xf) + + /* Value written to EC control register to start UCSI command */ + Name (UCMD, 0xE0) + + /* Shared memory fields are defined in the SSDT */ + External (VER0, FieldUnitObj) + External (VER1, FieldUnitObj) + External (CCI0, FieldUnitObj) + External (CCI1, FieldUnitObj) + External (CCI2, FieldUnitObj) + External (CCI3, FieldUnitObj) + External (CTL0, FieldUnitObj) + External (CTL1, FieldUnitObj) + External (CTL2, FieldUnitObj) + External (CTL3, FieldUnitObj) + External (CTL4, FieldUnitObj) + External (CTL5, FieldUnitObj) + External (CTL6, FieldUnitObj) + External (CTL7, FieldUnitObj) + External (MGI0, FieldUnitObj) + External (MGI1, FieldUnitObj) + External (MGI2, FieldUnitObj) + External (MGI3, FieldUnitObj) + External (MGI4, FieldUnitObj) + External (MGI5, FieldUnitObj) + External (MGI6, FieldUnitObj) + External (MGI7, FieldUnitObj) + External (MGI8, FieldUnitObj) + External (MGI9, FieldUnitObj) + External (MGIA, FieldUnitObj) + External (MGIB, FieldUnitObj) + External (MGIC, FieldUnitObj) + External (MGID, FieldUnitObj) + External (MGIE, FieldUnitObj) + External (MGIF, FieldUnitObj) + External (MGO0, FieldUnitObj) + External (MGO1, FieldUnitObj) + External (MGO2, FieldUnitObj) + External (MGO3, FieldUnitObj) + External (MGO4, FieldUnitObj) + External (MGO5, FieldUnitObj) + External (MGO6, FieldUnitObj) + External (MGO7, FieldUnitObj) + External (MGO8, FieldUnitObj) + External (MGO9, FieldUnitObj) + External (MGOA, FieldUnitObj) + External (MGOB, FieldUnitObj) + External (MGOC, FieldUnitObj) + External (MGOD, FieldUnitObj) + External (MGOE, FieldUnitObj) + External (MGOF, FieldUnitObj) + + Method (INIT) + { + /* Read UCSI version from EC into shared memory */ + ^VER0 = R (^^UVR0) + ^VER1 = R (^^UVR1) + } + + Method (_DSM, 4, Serialized) + { + If (Arg0 != ToUUID ("6f8398c2-7ca4-11e4-ad36-631042b5008f")) { + Return (Buffer (One) { Zero }) + } + + Switch (ToInteger (Arg2)) + { + Case (Zero) + { + Return (Buffer (One) { 0x07 }) + } + Case (One) + { + /* Write Message Out */ + W (^^UMO0, ^MGO0) + W (^^UMO1, ^MGO1) + W (^^UMO2, ^MGO2) + W (^^UMO3, ^MGO3) + W (^^UMO4, ^MGO4) + W (^^UMO5, ^MGO5) + W (^^UMO6, ^MGO6) + W (^^UMO7, ^MGO7) + W (^^UMO8, ^MGO8) + W (^^UMO9, ^MGO9) + W (^^UMOA, ^MGOA) + W (^^UMOB, ^MGOB) + W (^^UMOC, ^MGOC) + W (^^UMOD, ^MGOD) + W (^^UMOE, ^MGOE) + W (^^UMOF, ^MGOF) + + /* Write Control */ + W (^^UCL0, ^CTL0) + W (^^UCL1, ^CTL1) + W (^^UCL2, ^CTL2) + W (^^UCL3, ^CTL3) + W (^^UCL4, ^CTL4) + W (^^UCL5, ^CTL5) + W (^^UCL6, ^CTL6) + W (^^UCL7, ^CTL7) + + /* Start EC Command */ + W (^^UCTL, ^UCMD) + } + Case (2) + { + /* Read Message In */ + ^MGI0 = R (^^UMI0) + ^MGI1 = R (^^UMI1) + ^MGI2 = R (^^UMI2) + ^MGI3 = R (^^UMI3) + ^MGI4 = R (^^UMI4) + ^MGI5 = R (^^UMI5) + ^MGI6 = R (^^UMI6) + ^MGI7 = R (^^UMI7) + ^MGI8 = R (^^UMI8) + ^MGI9 = R (^^UMI9) + ^MGIA = R (^^UMIA) + ^MGIB = R (^^UMIB) + ^MGIC = R (^^UMIC) + ^MGID = R (^^UMID) + ^MGIE = R (^^UMIE) + ^MGIF = R (^^UMIF) + + /* Read Status */ + ^CCI0 = R (^^UCI0) + ^CCI1 = R (^^UCI1) + ^CCI2 = R (^^UCI2) + ^CCI3 = R (^^UCI3) + } + } + Return (Buffer (One) { Zero }) + } +} |