Patch set updated for coreboot: 21a394c hp/pavilion_m6_1035dx: Add ACPI support for reading battery level

[Alexandru Gagniuc]

Alexandru Gagniuc ([e-mail]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/5445

-gerrit

commit 21a394c1782019c5f2d75152703a967d70e48505
Author: Alexandru Gagniuc 
Date:   Mon Mar 31 16:17:54 2014 -0500

hp/pavilion_m6_1035dx: Add ACPI support for reading battery level

Hook in the EC ASL code. This provides just enough information for the
    OS to be able to read the battery information.

EC notifications (_Qxx) do not yet work, and it is unclear if the
    issue is in the ACPI code, or if the EC is not set up properly. Thus,
    the OS must boot with the battery inserted in order to be able to read
    its status.

The _L03 ACPI method is also removed, as the EC SCI uses this event.

Change-Id: I85cbaeb9c77e60bd1c68d928412f897de50c6329
    Signed-off-by: Alexandru Gagniuc 
---
 src/mainboard/hp/pavilion_m6_1035dx/acpi/ec.asl       | 14 ++++++++++++++
 src/mainboard/hp/pavilion_m6_1035dx/acpi/gpe.asl      |  6 ------
 .../hp/pavilion_m6_1035dx/acpi/mainboard.asl          | 19 +++++++++++++++++++
 src/mainboard/hp/pavilion_m6_1035dx/dsdt.asl          |  4 ++++
 4 files changed, 37 insertions(+), 6 deletions(-)

diff --git a/src/mainboard/hp/pavilion_m6_1035dx/acpi/ec.asl b/src/mainboard/hp/pavilion_m6_1035dx/acpi/ec.asl
new file mode 100644
index 0000000..e0d92fa
--- /dev/null
+++ b/src/mainboard/hp/pavilion_m6_1035dx/acpi/ec.asl
@@ -0,0 +1,14 @@
+/*
+ * Copyright (C) 2014 Alexandru Gagniuc 
+ * Subject to the GNU GPL v2, or (at your option) any later version.
+ */
+
+/*
+ * 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
+
+/* ACPI code for EC functions */
+#include <ec/compal/ene932/acpi/ec.asl>
diff --git a/src/mainboard/hp/pavilion_m6_1035dx/acpi/gpe.asl b/src/mainboard/hp/pavilion_m6_1035dx/acpi/gpe.asl
index 40a19d4..a240308 100644
--- a/src/mainboard/hp/pavilion_m6_1035dx/acpi/gpe.asl
+++ b/src/mainboard/hp/pavilion_m6_1035dx/acpi/gpe.asl
@@ -19,12 +19,6 @@

Scope(_GPE) {	/* Start Scope GPE */

-	/*  General event 3  */
-	Method(_L03) {
-		/* DBGO("\_GPE\_L00\n") */
-		Notify(_SB.PCI0.PWRB, 0x02) /* NOTIFY_DEVICE_WAKE */
-	}
-
    /*  Legacy PM event  */
    Method(_L08) {
    	/* DBGO("\_GPE\_L08\n") */
diff --git a/src/mainboard/hp/pavilion_m6_1035dx/acpi/mainboard.asl b/src/mainboard/hp/pavilion_m6_1035dx/acpi/mainboard.asl
index 040f069..0ddb038 100644
--- a/src/mainboard/hp/pavilion_m6_1035dx/acpi/mainboard.asl
+++ b/src/mainboard/hp/pavilion_m6_1035dx/acpi/mainboard.asl
@@ -35,9 +35,28 @@
    Name(OSV, Ones) /* Assume nothing */
    Name(PMOD, One) /* Assume APIC */

+	/* 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)
    	Field(GP0B, ByteAcc, NoLock, Preserve) {
    	, 11,
    	USBS, 1,
    }
+
+	/*
+	 * Used by EC code on certain events
+	 *
+	 * From ec/compal/ene932/acpi/ec.asl:
+	 * 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.
+	 */
+	Method (PNOT)
+	{
+		Store("Received PNOT call (probably from EC)", Debug)
+		/* TODO: Implement this */
+	}
diff --git a/src/mainboard/hp/pavilion_m6_1035dx/dsdt.asl b/src/mainboard/hp/pavilion_m6_1035dx/dsdt.asl
index ef2ae6f..c1f1933 100644
--- a/src/mainboard/hp/pavilion_m6_1035dx/dsdt.asl
+++ b/src/mainboard/hp/pavilion_m6_1035dx/dsdt.asl
@@ -69,6 +69,10 @@ DefinitionBlock (

}   /* End Scope(_SB)  */

+	Scope(_SB.PCI0.LIBR) {
+		#include "acpi/ec.asl"
+	}
+
    /* Describe SMBUS for the Southbridge */
    #include <southbridge/amd/agesa/hudson/acpi/smbus.asl>