From fa840676f5f3bd92b63c352f0c8bf6f14bc2c314 Mon Sep 17 00:00:00 2001 From: Alexandru Gagniuc Date: Wed, 9 Apr 2014 21:07:43 -0500 Subject: [PATCH] ec/compal/ene932: Update to use coreboot EC-mainboard API This patch implements a simple interface between the EC and mainboard ASL code. This interface does not rely on the preprocessor, and prevents name conflicts by scoping the interface methods. As this interface is documented on the coreboot wiki, an in-tree documentation is not provided. Change-Id: If0b09be4f5e17cc444539a30f0186590fa0b72b5 Signed-off-by: Alexandru Gagniuc Reviewed-on: http://review.coreboot.org/5515 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin --- src/ec/compal/ene932/acpi/ec.asl | 41 +++++++++++++++++-- src/ec/compal/ene932/documentation.txt | 21 +++------- src/mainboard/google/parrot/acpi/ec.asl | 5 +-- .../google/parrot/acpi/mainboard.asl | 20 +++++++++ .../hp/pavilion_m6_1035dx/acpi/ec.asl | 4 +- .../hp/pavilion_m6_1035dx/acpi/mainboard.asl | 21 ++++++++-- 6 files changed, 83 insertions(+), 29 deletions(-) diff --git a/src/ec/compal/ene932/acpi/ec.asl b/src/ec/compal/ene932/acpi/ec.asl index a042d7588d..0b7837f3eb 100644 --- a/src/ec/compal/ene932/acpi/ec.asl +++ b/src/ec/compal/ene932/acpi/ec.asl @@ -27,7 +27,7 @@ Device (EC0) { Name (_HID, EISAID ("PNP0C09")) Name (_UID, 1) - Name (_GPE, EC_SCI) // GPE for Runtime SCI + Name (_GPE, EC_SCI_GPE) // GPE for Runtime SCI OperationRegion (ERAM, EmbeddedControl, 0x00, 0xff) Field (ERAM, ByteAcc, Lock, Preserve) @@ -272,9 +272,6 @@ Device (EC0) // Initialize AC power state Store (ADPT, \PWRS) - // Initialize LID switch state - Store (EC_ACPI_LID_SWITCH_OBJECT, \LIDS) - // Force a read of CPU temperature Store (CTML, Local0) } @@ -308,6 +305,36 @@ Device (EC0) * Hotkey break Function 46h */ + /* Decrease brightness hotkey */ + Method (_Q11, 0, NotSerialized) + { + \_SB.MB.BRTD() + } + + /* Increase brightness hotkey */ + Method (_Q12, 0, NotSerialized) + { + \_SB.MB.BRTU() + } + + /* Lid opened */ + Method (_Q15, 0, NotSerialized) + { + \_SB.MB.LIDO() + } + + /* Lid closed */ + Method (_Q16, 0, NotSerialized) + { + \_SB.MB.LIDC() + } + + /* Switch display hotkey */ + Method (_Q1C, 0, NotSerialized) + { + \_SB.MB.DSPS() + } + // AC Power Connected Method (_Q37, 0, NotSerialized) { @@ -328,6 +355,12 @@ Device (EC0) \PNOT () } + /* Wireless toggle hotkey */ + Method (_Q40, 0, NotSerialized) + { + \_SB.MB.WLTG() + } + // Battery at critical low state Method (_Q22, 0, NotSerialized) { diff --git a/src/ec/compal/ene932/documentation.txt b/src/ec/compal/ene932/documentation.txt index eeb801a73f..a597e4eb7a 100644 --- a/src/ec/compal/ene932/documentation.txt +++ b/src/ec/compal/ene932/documentation.txt @@ -1,23 +1,14 @@ -Accessing the EC space -====================== +ASL interface +============= -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. +This EC implements the standard mainboard-EC coreboot interface. +Deviations from standard interface +================================== -Interfacing with the ASL files -============================== +The following method must be defined in the global namespace: -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 a0ee9d5343..ae0090fb5e 100644 --- a/src/mainboard/google/parrot/acpi/ec.asl +++ b/src/mainboard/google/parrot/acpi/ec.asl @@ -19,10 +19,7 @@ /* mainboard configuration */ #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 +#define EC_SCI_GPE 23 // GPIO7 << 16 to GPE bit for Runtime SCI /* ACPI code for EC functions */ #include "../../../../ec/compal/ene932/acpi/ec.asl" diff --git a/src/mainboard/google/parrot/acpi/mainboard.asl b/src/mainboard/google/parrot/acpi/mainboard.asl index 7b9aef0e91..4ab97330b1 100644 --- a/src/mainboard/google/parrot/acpi/mainboard.asl +++ b/src/mainboard/google/parrot/acpi/mainboard.asl @@ -68,4 +68,24 @@ Scope (\_SB) { }) } + Device (MB) { + /* Lid open */ + Method (LIDO) { /* Not needed on this board */ } + /* Lid closed */ + Method (LIDC) { /* Not needed on this board */ } + /* Increase brightness */ + Method (BRTU) { /* Not needed on this board */ } + /* Decrease brightness */ + Method (BRTD) { /* Not needed on this board */ } + /* Switch display */ + Method (DSPS) { /* Not needed on this board */ } + /* Toggle wireless */ + Method (WLTG) { /* Not needed on this board */ } + /* Return lid state */ + Method (LIDS) + { + Return (GP15) + } + } + } diff --git a/src/mainboard/hp/pavilion_m6_1035dx/acpi/ec.asl b/src/mainboard/hp/pavilion_m6_1035dx/acpi/ec.asl index e0d92fabac..188515c165 100644 --- a/src/mainboard/hp/pavilion_m6_1035dx/acpi/ec.asl +++ b/src/mainboard/hp/pavilion_m6_1035dx/acpi/ec.asl @@ -6,9 +6,7 @@ /* * EC bits specific to the mainboard */ -#define EC_SCI 3 -/* TODO: We do not yet know how the LID is connected to the platform */ -#define EC_ACPI_LID_SWITCH_OBJECT Zero +#define EC_SCI_GPE 3 /* ACPI code for EC functions */ #include diff --git a/src/mainboard/hp/pavilion_m6_1035dx/acpi/mainboard.asl b/src/mainboard/hp/pavilion_m6_1035dx/acpi/mainboard.asl index e30d083aa8..57e2b3c5c7 100644 --- a/src/mainboard/hp/pavilion_m6_1035dx/acpi/mainboard.asl +++ b/src/mainboard/hp/pavilion_m6_1035dx/acpi/mainboard.asl @@ -38,7 +38,6 @@ /* Variables used by EC */ /* TODO: These may belong in global non-volatile storage */ Name(PWRS, Zero) - Name(LIDS, Zero) /* AcpiGpe0Blk */ OperationRegion(GP0B, SystemMemory, 0xfed80814, 0x04) @@ -78,8 +77,24 @@ Scope (\_SB) { Name(_HID, EisaId("PNP0C0D")) Method(_LID, 0) { - Store (GE22, \LIDS) - Return (\LIDS) + Return (GE22) /* GE pin 22 */ } } + + Device (MB) { + /* Lid open */ + Method (LIDO) { /* Stub */ } + /* Lid closed */ + Method (LIDC) { /* Stub */ } + /* Increase brightness */ + Method (BRTU) { /* Stub */ } + /* Decrease brightness */ + Method (BRTD) { /* Stub */ } + /* Switch display */ + Method (DSPS) { /* Stub */ } + /* Toggle wireless */ + Method (WLTG) { /* Stub */ } + /* Return lid state */ + Method (LIDS) { /* Stub */ } + } }