soc/intel/common/acpi,mb/*: replace the two obsolete LPID with PEPD

Replace the two obsolete LPID implementations with the new PEPD device.

The PEPD device gets included in the plaforms' `southbridge.asl`, since
it is required to load the `intel_pmc_core` module in Linux, which
checks for the _HID. (See CB:46469 for more info on that.)

There is no harm for mainboards not supporting S0ix, because the _DSM
function won't be called with the LPS0 UUID on such boards. Such boards
can use the debugging functionality of `intel_pmc_core`, too.

Change-Id: Ic8427db33286451618b50ca429d41b604dbb08a5
Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46471
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

7 files changed, 10 insertions, 121 deletions

diff --git a/src/soc/intel/alderlake/acpi/southbridge.asl b/src/soc/intel/alderlake/acpi/southbridge.asl
index 42f3b129a9..3d8e55490a 100644
--- a/src/soc/intel/alderlake/acpi/southbridge.asl
+++ b/src/soc/intel/alderlake/acpi/southbridge.asl
@@ -44,8 +44,8 @@
 /* PCI _OSC */
 #include <soc/intel/common/acpi/pci_osc.asl>
 
-/* PMC Core*/
-#include <soc/intel/common/block/acpi/acpi/pmc.asl>
+/* Intel Power Engine Plug-in */
+#include <soc/intel/common/block/acpi/acpi/pep.asl>
 
 /* GbE 0:1f.6 */
 #include <soc/intel/common/block/acpi/acpi/pch_glan.asl>
diff --git a/src/soc/intel/cannonlake/acpi/southbridge.asl b/src/soc/intel/cannonlake/acpi/southbridge.asl
index 35dc19679d..fafbbfdcda 100644
--- a/src/soc/intel/cannonlake/acpi/southbridge.asl
+++ b/src/soc/intel/cannonlake/acpi/southbridge.asl
@@ -46,5 +46,5 @@
 /* GbE 0:1f.6 */
 #include <soc/intel/common/block/acpi/acpi/pch_glan.asl>
 
-/* PMC Core */
-#include <soc/intel/common/block/acpi/acpi/pmc.asl>
+/* Intel Power Engine Plug-in */
+#include <soc/intel/common/block/acpi/acpi/pep.asl>
diff --git a/src/soc/intel/common/acpi/lpit.asl b/src/soc/intel/common/acpi/lpit.asl
deleted file mode 100644
index 6159685b53..0000000000
--- a/src/soc/intel/common/acpi/lpit.asl
+++ /dev/null
@@ -1,103 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-
-#define LPID_DSM_ARG2_ENUM_FUNCTIONS 0
-#define LPID_DSM_ARG2_GET_DEVICE_CONSTRAINTS 1
-
-#define LPID_DSM_ARG2_GET_CRASH_DUMP_DEV 2
-#define LPID_DSM_ARG2_DISPLAY_OFF_NOTIFY 3
-#define LPID_DSM_ARG2_DISPLAY_ON_NOTIFY 4
-#define LPID_DSM_ARG2_S0IX_ENTRY 5
-#define LPID_DSM_ARG2_S0IX_EXIT 6
-
-External(\_SB.MS0X, MethodObj)
-External(\_SB.PCI0.LPCB.EC0.S0IX, MethodObj)
-External(\_SB.PCI0.EGPM, MethodObj)
-External(\_SB.PCI0.RGPM, MethodObj)
-
-Scope(\_SB)
-{
-	Device(LPID)
-	{
-		Name(_ADR, 0x00000000)
-		Name(_CID, EISAID("PNP0D80"))
-		Name(UUID, ToUUID("c4eb40a0-6cd2-11e2-bcfd-0800200c9a66"))
-		Method(_DSM, 4)
-		{
-			If(Arg0 == ^UUID) {
-				/*
-				 * Enum functions
-				 */
-				If(Arg2 == LPID_DSM_ARG2_ENUM_FUNCTIONS) {
-					Return(Buffer(One) {0x60})
-				}
-				/*
-				 * Function 1 - Get Device Constraints
-				 */
-				If(Arg2 == LPID_DSM_ARG2_GET_DEVICE_CONSTRAINTS) {
-					Return(Package(5) {0, Ones, Ones, Ones, Ones})
-				}
-				/*
-				 * Function 2 - Get Crash Dump Device
-				 */
-				If(Arg2 == LPID_DSM_ARG2_GET_CRASH_DUMP_DEV) {
-					Return(Buffer(One) {0x0})
-				}
-				/*
-				 * Function 3 - Display Off Notification
-				 */
-				If(Arg2 == LPID_DSM_ARG2_DISPLAY_OFF_NOTIFY) {
-				}
-				/*
-				 * Function 4 - Display On Notification
-				 */
-				If(Arg2 == LPID_DSM_ARG2_DISPLAY_ON_NOTIFY) {
-				}
-				/*
-				 * Function 5 - Low Power S0 Entry Notification
-				 */
-				If(Arg2 == LPID_DSM_ARG2_S0IX_ENTRY) {
-					/* Inform the EC */
-					If (CondRefOf (\_SB.PCI0.LPCB.EC0.S0IX)) {
-						\_SB.PCI0.LPCB.EC0.S0IX(1)
-					}
-
-					/* provide board level S0ix hook */
-					If (CondRefOf (\_SB.MS0X)) {
-						\_SB.MS0X(1)
-					}
-
-					/*
-					 * Save the current PM bits then
-					 * enable GPIO PM with MISCCFG_ENABLE_GPIO_PM_CONFIG
-					 */
-					If (CondRefOf (\_SB.PCI0.EGPM))
-					{
-						\_SB.PCI0.EGPM ()
-					}
-				}
-				/*
-				 * Function 6 - Low Power S0 Exit Notification
-				 */
-				If(Arg2 == LPID_DSM_ARG2_S0IX_EXIT) {
-					/* Inform the EC */
-					If (CondRefOf (\_SB.PCI0.LPCB.EC0.S0IX)) {
-						\_SB.PCI0.LPCB.EC0.S0IX(0)
-					}
-
-					/* provide board level S0ix hook */
-					If (CondRefOf (\_SB.MS0X)) {
-						\_SB.MS0X(0)
-					}
-
-					/* Restore GPIO all Community PM */
-					If (CondRefOf (\_SB.PCI0.RGPM))
-					{
-						\_SB.PCI0.RGPM ()
-					}
-				}
-			}
-
-			Return(Buffer(One) {0x00})
-		}		// Method(_DSM)
-	}			// Device (LPID)
-}				// End Scope(\_SB)
diff --git a/src/soc/intel/common/block/acpi/acpi/pmc.asl b/src/soc/intel/common/block/acpi/acpi/pmc.asl
deleted file mode 100644
index ddf6470096..0000000000
--- a/src/soc/intel/common/block/acpi/acpi/pmc.asl
+++ /dev/null
@@ -1,8 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-
-Device (PEPD)
-{
-	Name (_HID, "INT33A1" /* Intel Power Engine */)
-	Name (_CID, EisaId ("PNP0D80") /* System Power Management Controller */)
-	Name (_UID, One)
-}
diff --git a/src/soc/intel/elkhartlake/acpi/southbridge.asl b/src/soc/intel/elkhartlake/acpi/southbridge.asl
index 28705b1097..17d19131b5 100644
--- a/src/soc/intel/elkhartlake/acpi/southbridge.asl
+++ b/src/soc/intel/elkhartlake/acpi/southbridge.asl
@@ -41,8 +41,8 @@
 /* PCI _OSC */
 #include <soc/intel/common/acpi/pci_osc.asl>
 
-/* PMC Core*/
-#include <soc/intel/common/block/acpi/acpi/pmc.asl>
+/* Intel Power Engine Plug-in */
+#include <soc/intel/common/block/acpi/acpi/pep.asl>
 
 /* EMMC/SD card */
 #include "scs.asl"
diff --git a/src/soc/intel/jasperlake/acpi/southbridge.asl b/src/soc/intel/jasperlake/acpi/southbridge.asl
index b82cce50ab..ebc6fd8443 100644
--- a/src/soc/intel/jasperlake/acpi/southbridge.asl
+++ b/src/soc/intel/jasperlake/acpi/southbridge.asl
@@ -47,8 +47,8 @@
 /* PCI _OSC */
 #include <soc/intel/common/acpi/pci_osc.asl>
 
-/* PMC Core*/
-#include <soc/intel/common/block/acpi/acpi/pmc.asl>
+/* Intel Power Engine Plug-in */
+#include <soc/intel/common/block/acpi/acpi/pep.asl>
 
 /* EMMC/SD card */
 #include "scs.asl"
diff --git a/src/soc/intel/tigerlake/acpi/southbridge.asl b/src/soc/intel/tigerlake/acpi/southbridge.asl
index 42f3b129a9..3d8e55490a 100644
--- a/src/soc/intel/tigerlake/acpi/southbridge.asl
+++ b/src/soc/intel/tigerlake/acpi/southbridge.asl
@@ -44,8 +44,8 @@
 /* PCI _OSC */
 #include <soc/intel/common/acpi/pci_osc.asl>
 
-/* PMC Core*/
-#include <soc/intel/common/block/acpi/acpi/pmc.asl>
+/* Intel Power Engine Plug-in */
+#include <soc/intel/common/block/acpi/acpi/pep.asl>
 
 /* GbE 0:1f.6 */
 #include <soc/intel/common/block/acpi/acpi/pch_glan.asl>