Duncan Laurie merged this change.
ec/google/wilco: Add S0ix support handlers
1) In the EC _REG method set the flag indicating S0ix support in the OS.
2) Add a function that can be called by the LPI _DSM method to indicate
to the EC that the OS is entering or exiting S0ix.
BUG=b:73137291
Change-Id: Iddc33a08542a6657694c47a9fda1b02dd39d89f7
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Reviewed-on: https://review.coreboot.org/c/31094
Reviewed-by: Lijian Zhao <lijian.zhao@intel.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Shaunak Saha <shaunak.saha@intel.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
---
M src/ec/google/wilco/acpi/ec.asl
M src/ec/google/wilco/acpi/ec_ram.asl
2 files changed, 19 insertions(+), 0 deletions(-)
diff --git a/src/ec/google/wilco/acpi/ec.asl b/src/ec/google/wilco/acpi/ec.asl
index f9b16b5..be80b2d 100644
--- a/src/ec/google/wilco/acpi/ec.asl
+++ b/src/ec/google/wilco/acpi/ec.asl
@@ -47,6 +47,9 @@
/* Indicate to EC that OS is ready for queries */
W (ERDY, Arg1)
+ /* Indicate that the OS supports S0ix */
+ W (CSOS, One)
+
/* Tell EC to stop emulating PS/2 mouse */
W (PS2M, Zero)
@@ -140,6 +143,20 @@
Return (ECRW (Arg0, Arg1))
}
+ /*
+ * Tell EC that the OS is entering or exiting S0ix
+ */
+ Method (S0IX, 1, Serialized)
+ {
+ If (Arg0) {
+ Printf ("EC Enter S0ix")
+ W (CSEX, One)
+ } Else {
+ Printf ("EC Exit S0ix")
+ W (CSEX, Zero)
+ }
+ }
+
#include "ec_dev.asl"
#include "ec_ram.asl"
#include "ac.asl"
diff --git a/src/ec/google/wilco/acpi/ec_ram.asl b/src/ec/google/wilco/acpi/ec_ram.asl
index 1563a3c..1e5d7cb 100644
--- a/src/ec/google/wilco/acpi/ec_ram.asl
+++ b/src/ec/google/wilco/acpi/ec_ram.asl
@@ -142,3 +142,5 @@
Name (DWTH, Package () { 0x36, 0xff, WR }) /* DPTF: Write Trip High */
Name (DWHY, Package () { 0x37, 0xff, WR }) /* DPTF: Write Hysteresis */
Name (DWTQ, Package () { 0x38, 0xff, WR }) /* DPTF: Write Trip Query */
+Name (CSOS, Package () { 0xb8, 0xff, WR }) /* OS support for S0ix */
+Name (CSEX, Package () { 0xb9, 0xff, WR }) /* OS enter(1)/exit(0) S0ix */
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