diff options
| -rw-r--r-- | src/ec/compal/ene932/acpi/ec.asl | 2 | ||||
| -rw-r--r-- | src/ec/compal/ene932/documentation.txt | 23 | ||||
| -rw-r--r-- | src/mainboard/google/parrot/acpi/ec.asl | 3 |
3 files changed, 27 insertions, 1 deletions
diff --git a/src/ec/compal/ene932/acpi/ec.asl b/src/ec/compal/ene932/acpi/ec.asl index cb50a21dc5..a042d7588d 100644 --- a/src/ec/compal/ene932/acpi/ec.asl +++ b/src/ec/compal/ene932/acpi/ec.asl @@ -273,7 +273,7 @@ Device (EC0) Store (ADPT, \PWRS) // Initialize LID switch state - Store (GP15, \LIDS) + Store (EC_ACPI_LID_SWITCH_OBJECT, \LIDS) // Force a read of CPU temperature Store (CTML, Local0) diff --git a/src/ec/compal/ene932/documentation.txt b/src/ec/compal/ene932/documentation.txt new file mode 100644 index 0000000000..eeb801a73f --- /dev/null +++ b/src/ec/compal/ene932/documentation.txt @@ -0,0 +1,23 @@ + +Accessing the EC space +====================== + +The ACPI implementation uses the standard I/O ports 0x62 and 0x66 to access the +EC functionality. Accesses to these ports must be directed to the LPC bus to +which the EC is connected. + + +Interfacing with the ASL files +============================== + +The mainboard code must define several variables for the ASL files. + +* EC_SCI + Defines the General Purpose Event (GPE) corresponding to the EC's SCI line. +* EC_ACPI_LID_SWITCH_OBJECT + Defines the APCI object which reads the state of the lid, with 0 = open, and + 1 = closed. This is usually the bit which reads the GPIO input corresponding + to the lid switch. +* PNOT() + The mainboard must define a PNOT method to handle power state notifications + and Notify CPU device objects to re-evaluate their _PPC and _CST tables. diff --git a/src/mainboard/google/parrot/acpi/ec.asl b/src/mainboard/google/parrot/acpi/ec.asl index 522a0b9a98..a0ee9d5343 100644 --- a/src/mainboard/google/parrot/acpi/ec.asl +++ b/src/mainboard/google/parrot/acpi/ec.asl @@ -21,5 +21,8 @@ #include "../ec.h" #define EC_SCI 23 // GPIO7 << 16 to GPE bit for Runtime SCI +/* GP15 is defined in the southbridge's ASL */ +#define EC_ACPI_LID_SWITCH_OBJECT GP15 + /* ACPI code for EC functions */ #include "../../../../ec/compal/ene932/acpi/ec.asl" |