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-rw-r--r--config/coreboot/default/patches/0037-ec-dell-mec5035-Add-S3-suspend-SMI-handler.patch117
1 files changed, 117 insertions, 0 deletions
diff --git a/config/coreboot/default/patches/0037-ec-dell-mec5035-Add-S3-suspend-SMI-handler.patch b/config/coreboot/default/patches/0037-ec-dell-mec5035-Add-S3-suspend-SMI-handler.patch
new file mode 100644
index 00000000..8947fe3c
--- /dev/null
+++ b/config/coreboot/default/patches/0037-ec-dell-mec5035-Add-S3-suspend-SMI-handler.patch
@@ -0,0 +1,117 @@
+From 7e921212d3113320b2d28e66cd6a6788533fcab7 Mon Sep 17 00:00:00 2001
+From: Nicholas Chin <nic.c3.14@gmail.com>
+Date: Fri, 3 May 2024 11:03:32 -0600
+Subject: [PATCH 37/39] ec/dell/mec5035: Add S3 suspend SMI handler
+
+Change-Id: I655868aba46911d128f6c24f410dc6fdf83f3070
+Signed-off-by: Nicholas Chin <nic.c3.14@gmail.com>
+---
+ src/ec/dell/mec5035/Makefile.mk | 1 +
+ src/ec/dell/mec5035/mec5035.c | 14 ++++++++++++++
+ src/ec/dell/mec5035/mec5035.h | 19 +++++++++++++++++++
+ src/ec/dell/mec5035/smihandler.c | 17 +++++++++++++++++
+ 4 files changed, 51 insertions(+)
+ create mode 100644 src/ec/dell/mec5035/smihandler.c
+
+diff --git a/src/ec/dell/mec5035/Makefile.mk b/src/ec/dell/mec5035/Makefile.mk
+index 4ebdd811f9..be557e4599 100644
+--- a/src/ec/dell/mec5035/Makefile.mk
++++ b/src/ec/dell/mec5035/Makefile.mk
+@@ -5,5 +5,6 @@ ifeq ($(CONFIG_EC_DELL_MEC5035),y)
+ bootblock-y += mec5035.c
+ romstage-y += mec5035.c
+ ramstage-y += mec5035.c
++smm-y += mec5035.c smihandler.c
+
+ endif
+diff --git a/src/ec/dell/mec5035/mec5035.c b/src/ec/dell/mec5035/mec5035.c
+index 68b6b2f7fb..33bf046634 100644
+--- a/src/ec/dell/mec5035/mec5035.c
++++ b/src/ec/dell/mec5035/mec5035.c
+@@ -94,6 +94,20 @@ void mec5035_control_radio(enum ec_radio_dev dev, enum ec_radio_state state)
+ ec_command(CMD_RADIO_CTRL);
+ }
+
++void mec5035_sleep_enable(void)
++{
++ u8 buf[SLEEP_EN_NUM_ARGS] = {3, 0};
++ write_mailbox_regs(buf, 2, SLEEP_EN_NUM_ARGS);
++ ec_command(CMD_SLEEP_ENABLE);
++}
++
++void mec5035_change_wake(u8 source, enum ec_wake_change change)
++{
++ u8 buf[ACPI_WAKEUP_NUM_ARGS] = {change, source, 0, 0x40};
++ write_mailbox_regs(buf, 2, ACPI_WAKEUP_NUM_ARGS);
++ ec_command(CMD_ACPI_WAKEUP_CHANGE);
++}
++
+ void mec5035_early_init(void)
+ {
+ /* If this isn't sent the EC shuts down the system after about 15
+diff --git a/src/ec/dell/mec5035/mec5035.h b/src/ec/dell/mec5035/mec5035.h
+index fa15a9d621..069616fbc5 100644
+--- a/src/ec/dell/mec5035/mec5035.h
++++ b/src/ec/dell/mec5035/mec5035.h
+@@ -4,6 +4,7 @@
+ #define _EC_DELL_MEC5035_H_
+
+ #include <stdint.h>
++#include <types.h>
+
+ #define NUM_REGISTERS 32
+
+@@ -29,9 +30,27 @@ enum ec_radio_state {
+ RADIO_ON
+ };
+
++#define CMD_ACPI_WAKEUP_CHANGE 0x4a
++#define ACPI_WAKEUP_NUM_ARGS 4
++enum ec_wake_change {
++ WAKE_OFF = 0,
++ WAKE_ON
++};
++enum ec_acpi_wake_events {
++ EC_ACPI_WAKE_PWRB = BIT(0), /* Wake up by power button */
++ EC_ACPI_WAKE_LID = BIT(1), /* Wake up by lid switch */
++ EC_ACPI_WAKE_RTC = BIT(5), /* Wake up by RTC */
++};
++
++#define CMD_SLEEP_ENABLE 0x64
++#define SLEEP_EN_NUM_ARGS 2
++
+ u8 mec5035_mouse_touchpad(u8 setting);
+ void mec5035_cpu_ok(void);
+ void mec5035_early_init(void);
+ void mec5035_control_radio(enum ec_radio_dev device, enum ec_radio_state state);
++void mec5035_sleep(int slp_type);
++void mec5035_change_wake(u8 source, enum ec_wake_change change);
++void mec5035_sleep_enable(void);
+
+ #endif /* _EC_DELL_MEC5035_H_ */
+diff --git a/src/ec/dell/mec5035/smihandler.c b/src/ec/dell/mec5035/smihandler.c
+new file mode 100644
+index 0000000000..1db834773d
+--- /dev/null
++++ b/src/ec/dell/mec5035/smihandler.c
+@@ -0,0 +1,17 @@
++/* SPDX-License-Identifier: GPL-2.0-only */
++
++#include <acpi/acpi.h>
++#include <console/console.h>
++#include <ec/acpi/ec.h>
++#include "mec5035.h"
++
++void mec5035_sleep(int slp_type)
++{
++ switch (slp_type) {
++ case ACPI_S3:
++ /* System does not yet resume properly if woken by lid */
++ mec5035_change_wake(EC_ACPI_WAKE_LID, WAKE_OFF);
++ mec5035_sleep_enable();
++ break;
++ }
++}
+--
+2.39.2
+