118 lines
3.4 KiB
Diff
118 lines
3.4 KiB
Diff
From a8c4f7004ea1c9b8268a87dd0b700c250ec4747d Mon Sep 17 00:00:00 2001
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From: Nicholas Chin <nic.c3.14@gmail.com>
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Date: Fri, 3 May 2024 11:03:32 -0600
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Subject: [PATCH] ec/dell/mec5035: Add S3 suspend SMI handler
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Change-Id: I655868aba46911d128f6c24f410dc6fdf83f3070
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Signed-off-by: Nicholas Chin <nic.c3.14@gmail.com>
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---
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src/ec/dell/mec5035/Makefile.mk | 1 +
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src/ec/dell/mec5035/mec5035.c | 14 ++++++++++++++
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src/ec/dell/mec5035/mec5035.h | 19 +++++++++++++++++++
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src/ec/dell/mec5035/smihandler.c | 17 +++++++++++++++++
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4 files changed, 51 insertions(+)
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create mode 100644 src/ec/dell/mec5035/smihandler.c
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diff --git a/src/ec/dell/mec5035/Makefile.mk b/src/ec/dell/mec5035/Makefile.mk
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index 4ebdd811f9..be557e4599 100644
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--- a/src/ec/dell/mec5035/Makefile.mk
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+++ b/src/ec/dell/mec5035/Makefile.mk
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@@ -5,5 +5,6 @@ ifeq ($(CONFIG_EC_DELL_MEC5035),y)
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bootblock-y += mec5035.c
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romstage-y += mec5035.c
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ramstage-y += mec5035.c
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+smm-y += mec5035.c smihandler.c
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endif
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diff --git a/src/ec/dell/mec5035/mec5035.c b/src/ec/dell/mec5035/mec5035.c
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index 68b6b2f7fb..33bf046634 100644
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--- a/src/ec/dell/mec5035/mec5035.c
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+++ b/src/ec/dell/mec5035/mec5035.c
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@@ -94,6 +94,20 @@ void mec5035_control_radio(enum ec_radio_dev dev, enum ec_radio_state state)
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ec_command(CMD_RADIO_CTRL);
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}
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+void mec5035_sleep_enable(void)
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+{
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+ u8 buf[SLEEP_EN_NUM_ARGS] = {3, 0};
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+ write_mailbox_regs(buf, 2, SLEEP_EN_NUM_ARGS);
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+ ec_command(CMD_SLEEP_ENABLE);
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+}
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+
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+void mec5035_change_wake(u8 source, enum ec_wake_change change)
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+{
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+ u8 buf[ACPI_WAKEUP_NUM_ARGS] = {change, source, 0, 0x40};
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+ write_mailbox_regs(buf, 2, ACPI_WAKEUP_NUM_ARGS);
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+ ec_command(CMD_ACPI_WAKEUP_CHANGE);
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+}
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+
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void mec5035_early_init(void)
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{
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/* If this isn't sent the EC shuts down the system after about 15
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diff --git a/src/ec/dell/mec5035/mec5035.h b/src/ec/dell/mec5035/mec5035.h
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index fa15a9d621..069616fbc5 100644
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--- a/src/ec/dell/mec5035/mec5035.h
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+++ b/src/ec/dell/mec5035/mec5035.h
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@@ -4,6 +4,7 @@
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#define _EC_DELL_MEC5035_H_
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#include <stdint.h>
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+#include <types.h>
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#define NUM_REGISTERS 32
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@@ -29,9 +30,27 @@ enum ec_radio_state {
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RADIO_ON
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};
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+#define CMD_ACPI_WAKEUP_CHANGE 0x4a
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+#define ACPI_WAKEUP_NUM_ARGS 4
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+enum ec_wake_change {
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+ WAKE_OFF = 0,
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+ WAKE_ON
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+};
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+enum ec_acpi_wake_events {
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+ EC_ACPI_WAKE_PWRB = BIT(0), /* Wake up by power button */
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+ EC_ACPI_WAKE_LID = BIT(1), /* Wake up by lid switch */
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+ EC_ACPI_WAKE_RTC = BIT(5), /* Wake up by RTC */
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+};
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+
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+#define CMD_SLEEP_ENABLE 0x64
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+#define SLEEP_EN_NUM_ARGS 2
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+
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u8 mec5035_mouse_touchpad(u8 setting);
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void mec5035_cpu_ok(void);
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void mec5035_early_init(void);
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void mec5035_control_radio(enum ec_radio_dev device, enum ec_radio_state state);
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+void mec5035_sleep(int slp_type);
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+void mec5035_change_wake(u8 source, enum ec_wake_change change);
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+void mec5035_sleep_enable(void);
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#endif /* _EC_DELL_MEC5035_H_ */
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diff --git a/src/ec/dell/mec5035/smihandler.c b/src/ec/dell/mec5035/smihandler.c
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new file mode 100644
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index 0000000000..1db834773d
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--- /dev/null
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+++ b/src/ec/dell/mec5035/smihandler.c
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@@ -0,0 +1,17 @@
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+/* SPDX-License-Identifier: GPL-2.0-only */
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+
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+#include <acpi/acpi.h>
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+#include <console/console.h>
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+#include <ec/acpi/ec.h>
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+#include "mec5035.h"
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+
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+void mec5035_sleep(int slp_type)
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+{
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+ switch (slp_type) {
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+ case ACPI_S3:
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+ /* System does not yet resume properly if woken by lid */
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+ mec5035_change_wake(EC_ACPI_WAKE_LID, WAKE_OFF);
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+ mec5035_sleep_enable();
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+ break;
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+ }
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+}
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--
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2.44.0
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