From a972e238dd63beca0c60bf00c6e1cef0bed95d27 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Michael=20Niew=C3=B6hner?= Date: Wed, 18 May 2022 22:27:13 +0200 Subject: soc/intel/common: provide display hook in PEP for ECs MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Provide PEP display notification hook for ECs. Change-Id: Icbfd294cdd238e63eb947c227a9cf73daca702ef Signed-off-by: Michael Niewöhner Reviewed-on: https://review.coreboot.org/c/coreboot/+/68789 Tested-by: build bot (Jenkins) Reviewed-by: Angel Pons --- src/soc/intel/common/block/acpi/pep.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'src') diff --git a/src/soc/intel/common/block/acpi/pep.c b/src/soc/intel/common/block/acpi/pep.c index cd1030cb8e..2ba9f94573 100644 --- a/src/soc/intel/common/block/acpi/pep.c +++ b/src/soc/intel/common/block/acpi/pep.c @@ -16,6 +16,7 @@ #define SYSTEM_POWER_MANAGEMENT_HID "INT33A1" #define SYSTEM_POWER_MANAGEMENT_CID "PNP0D80" #define EC_S0IX_HOOK "\\_SB.PCI0.LPCB.EC0.S0IX" +#define EC_DISPLAY_HOOK "\\_SB.PCI0.LPCB.EC0.EDSX" #define MAINBOARD_HOOK "\\_SB.MS0X" #define MAINBOARD_DISPLAY_HOOK "\\_SB.MDSX" #define ENABLE_PM_BITS_HOOK "\\_SB.PCI0.EGPM" @@ -169,6 +170,12 @@ static void lpi_s0ix_exit(void *unused) static void lpi_display_on(void *unused) { + /* Inform the EC */ + acpigen_write_if_cond_ref_of(EC_DISPLAY_HOOK); + acpigen_emit_namestring(EC_DISPLAY_HOOK); + acpigen_write_integer(1); + acpigen_write_if_end(); + /* Provide a board level S0ix hook */ acpigen_write_if_cond_ref_of(MAINBOARD_DISPLAY_HOOK); acpigen_emit_namestring(MAINBOARD_DISPLAY_HOOK); @@ -178,6 +185,12 @@ static void lpi_display_on(void *unused) static void lpi_display_off(void *unused) { + /* Inform the EC */ + acpigen_write_if_cond_ref_of(EC_DISPLAY_HOOK); + acpigen_emit_namestring(EC_DISPLAY_HOOK); + acpigen_write_integer(0); + acpigen_write_if_end(); + /* Provide a board level S0ix hook */ acpigen_write_if_cond_ref_of(MAINBOARD_DISPLAY_HOOK); acpigen_emit_namestring(MAINBOARD_DISPLAY_HOOK); -- cgit v1.2.3