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From d6935e6d62b35ec14d2187c2cfdc19934d66db6d Mon Sep 17 00:00:00 2001
From: "Guilherme G. Piccoli" <gpiccoli@igalia.com>
Date: Thu, 2 Nov 2023 16:28:35 -0300
Subject: [PATCH] (NOT-FOR-UPSTREAM) PM: suspend: Disable s2idle on Steam Deck
Jupiter platform doesn't support s2idle - system appears to
sleep and never wakeup again. So, disable it based on DMI
checking for platforms named "Valve Jupiter".
Signed-off-by: Guilherme G. Piccoli <gpiccoli@igalia.com>
(cherry picked from commit 3956de585667cfd9f91a3ee8af34f6c0d44f4381)
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Signed-off-by: Jan200101 <sentrycraft123@gmail.com>
---
kernel/power/suspend.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c
index fa3bf161d13f..e614b865a099 100644
--- a/kernel/power/suspend.c
+++ b/kernel/power/suspend.c
@@ -30,6 +30,7 @@
#include <trace/events/power.h>
#include <linux/compiler.h>
#include <linux/moduleparam.h>
+#include <linux/dmi.h>
#include "power.h"
@@ -60,6 +61,7 @@ static DECLARE_SWAIT_QUEUE_HEAD(s2idle_wait_head);
enum s2idle_states __read_mostly s2idle_state;
static DEFINE_RAW_SPINLOCK(s2idle_lock);
+static bool s2idle_unsupported;
/**
* pm_suspend_default_s2idle - Check if suspend-to-idle is the default suspend.
@@ -174,6 +176,8 @@ static bool valid_state(suspend_state_t state)
void __init pm_states_init(void)
{
+ const char *sys_vendor, *product_name;
+
/* "mem" and "freeze" are always present in /sys/power/state. */
pm_states[PM_SUSPEND_MEM] = pm_labels[PM_SUSPEND_MEM];
pm_states[PM_SUSPEND_TO_IDLE] = pm_labels[PM_SUSPEND_TO_IDLE];
@@ -182,6 +186,20 @@ void __init pm_states_init(void)
* initialize mem_sleep_states[] accordingly here.
*/
mem_sleep_states[PM_SUSPEND_TO_IDLE] = mem_sleep_labels[PM_SUSPEND_TO_IDLE];
+
+ /*
+ * Identify here if we're running on Steam Deck - if so, we shouldn't
+ * support s2idle mem_sleep mode, since this mode doesn't work on Deck.
+ */
+
+ sys_vendor = dmi_get_system_info(DMI_SYS_VENDOR);
+ product_name = dmi_get_system_info(DMI_PRODUCT_NAME);
+
+ if (sys_vendor && (!strncmp("Valve", sys_vendor, 5)) &&
+ product_name && (!strncmp("Jupiter", product_name, 7))) {
+ s2idle_unsupported = true;
+ pr_info("Steam Deck quirk - no s2idle allowed!\n");
+ }
}
static int __init mem_sleep_default_setup(char *str)
@@ -562,6 +580,10 @@ static int enter_state(suspend_state_t state)
return -EAGAIN;
}
#endif
+ if (s2idle_unsupported) {
+ pr_info("s2idle sleep is not supported\n");
+ return -EINVAL;
+ }
} else if (!valid_state(state)) {
return -EINVAL;
}
--
2.43.0
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