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[Public]<br>
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Returns true for dGPU always. Better to keep the whole check under something like this.</div>
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if (pm_suspend_target_state != PM_SUSPEND_ON)</div>
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Thanks,<br>
Lijo</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> amd-gfx <amd-gfx-bounces@lists.freedesktop.org> on behalf of Mario Limonciello <mario.limonciello@amd.com><br>
<b>Sent:</b> Wednesday, January 26, 2022 9:39:42 AM<br>
<b>To:</b> amd-gfx@lists.freedesktop.org <amd-gfx@lists.freedesktop.org><br>
<b>Cc:</b> Liang, Prike <Prike.Liang@amd.com>; Limonciello, Mario <Mario.Limonciello@amd.com><br>
<b>Subject:</b> [PATCH v5 2/4] drm/amd: add support to check whether the system is set to s3</font>
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<div class="PlainText">This will be used to help make decisions on what to do in<br>
misconfigured systems.<br>
<br>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com><br>
---<br>
drivers/gpu/drm/amd/amdgpu/amdgpu.h | 2 ++<br>
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c | 17 +++++++++++++++++<br>
2 files changed, 19 insertions(+)<br>
<br>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h<br>
index 3bc76759c143..f184c88d3d4f 100644<br>
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h<br>
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h<br>
@@ -1409,11 +1409,13 @@ int amdgpu_acpi_smart_shift_update(struct drm_device *dev, enum amdgpu_ss ss_sta<br>
int amdgpu_acpi_pcie_notify_device_ready(struct amdgpu_device *adev);<br>
<br>
void amdgpu_acpi_get_backlight_caps(struct amdgpu_dm_backlight_caps *caps);<br>
+bool amdgpu_acpi_is_s3_active(struct amdgpu_device *adev);<br>
bool amdgpu_acpi_is_s0ix_active(struct amdgpu_device *adev);<br>
void amdgpu_acpi_detect(void);<br>
#else<br>
static inline int amdgpu_acpi_init(struct amdgpu_device *adev) { return 0; }<br>
static inline void amdgpu_acpi_fini(struct amdgpu_device *adev) { }<br>
+static inline bool amdgpu_acpi_is_s3_active(struct amdgpu_device *adev) { return false };<br>
static inline bool amdgpu_acpi_is_s0ix_active(struct amdgpu_device *adev) { return false; }<br>
static inline void amdgpu_acpi_detect(void) { }<br>
static inline bool amdgpu_acpi_is_power_shift_control_supported(void) { return false; }<br>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c<br>
index 2531da6cbec3..df673062bc03 100644<br>
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c<br>
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c<br>
@@ -1031,6 +1031,23 @@ void amdgpu_acpi_detect(void)<br>
}<br>
}<br>
<br>
+/**<br>
+ * amdgpu_acpi_is_s3_active<br>
+ *<br>
+ * @adev: amdgpu_device_pointer<br>
+ *<br>
+ * returns true if supported, false if not.<br>
+ */<br>
+bool amdgpu_acpi_is_s3_active(struct amdgpu_device *adev)<br>
+{<br>
+#if IS_ENABLED(CONFIG_SUSPEND)<br>
+ return !(adev->flags & AMD_IS_APU) ||<br>
+ pm_suspend_target_state == PM_SUSPEND_MEM;<br>
+#else<br>
+ return false;<br>
+#endif<br>
+}<br>
+<br>
/**<br>
* amdgpu_acpi_is_s0ix_active<br>
*<br>
-- <br>
2.25.1<br>
<br>
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