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ec/google/wilco: Add S0ix support handlers

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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>
This commit is contained in:
Duncan Laurie 2019-01-25 10:28:03 -08:00 committed by Duncan Laurie
parent 5b23002799
commit 286a0ab143
2 changed files with 19 additions and 0 deletions
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17
src/ec/google/wilco/acpi/ec.asl
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@ -47,6 +47,9 @@ Device (EC0)
/* 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 @@ Device (EC0)
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"

2
src/ec/google/wilco/acpi/ec_ram.asl
View file

@ -142,3 +142,5 @@ Name (DWTL, Package () { 0x35, 0xff, WR }) /* DPTF: Write Trip Low */
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 */