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soc/intel/common: provide display hook in PEP for ECs 

Provide PEP display notification hook for ECs.

Change-Id: Icbfd294cdd238e63eb947c227a9cf73daca702ef
Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68789
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
This commit is contained in:
Michael Niewöhner 2022-05-18 22:27:13 +02:00
parent 060dc7b26d
commit a972e238dd
1 changed files with 13 additions and 0 deletions
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13
src/soc/intel/common/block/acpi/pep.c
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@ -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);