<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=Windows-1252"> </head> <body> <div style="color: rgb(33, 33, 33); background-color: rgb(255, 255, 255);" dir="auto"> Talking from generic API perspective - S3 is considered active for dGPU only if it's going to non-S0 state. If called from anywhere else than suspend op, this should return false.<span></span></div> <div id="ms-outlook-mobile-signature" dir="auto"> <div><br> </div> Thanks,<br> Lijo</div> <hr style="display:inline-block;width:98%" tabindex="-1"> <div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Limonciello, Mario <Mario.Limonciello@amd.com><br> <b>Sent:</b> Wednesday, January 26, 2022 8:37:28 PM<br> <b>To:</b> Lazar, Lijo <Lijo.Lazar@amd.com>; amd-gfx@lists.freedesktop.org <amd-gfx@lists.freedesktop.org><br> <b>Cc:</b> Liang, Prike <Prike.Liang@amd.com><br> <b>Subject:</b> RE: [PATCH v5 2/4] drm/amd: add support to check whether the system is set to s3</font> <div> </div> </div> <style>  </style> <div lang="EN-US" link="#0563C1" vlink="#954F72" style="word-wrap:break-word"> <div class="x_WordSection1"> <p class="x_msipheaderc10f11a2" style="margin:0in"><span style="font-size:10.0pt; font-family:"Arial",sans-serif; color:green">[Public]</span></p> <p class="x_MsoNormal"> </p> <p class="x_MsoNormal">That was intentional – shouldn’t dGPU always be going through S3 path currently?</p> <p class="x_MsoNormal"> </p> <div style="border:none; border-left:solid blue 1.5pt; padding:0in 0in 0in 4.0pt"> <div> <div style="border:none; border-top:solid #E1E1E1 1.0pt; padding:3.0pt 0in 0in 0in"> <p class="x_MsoNormal"><b>From:</b> Lazar, Lijo <Lijo.Lazar@amd.com> <br> <b>Sent:</b> Wednesday, January 26, 2022 09:06<br> <b>To:</b> Limonciello, Mario <Mario.Limonciello@amd.com>; 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> Re: [PATCH v5 2/4] drm/amd: add support to check whether the system is set to s3</p> </div> </div> <p class="x_MsoNormal"> </p> <p style="margin:15.0pt"><span style="font-size:10.0pt; font-family:"Arial",sans-serif; color:green">[Public]</span></p> <p class="x_MsoNormal"> </p> <div> <div> <p class="x_MsoNormal" style="background:white"><span style="color:#212121">Returns true for dGPU always. Better to keep the whole check under something like this.</span></p> </div> <div> <p class="x_MsoNormal" style="background:white"><span style="color:#212121"> </span></p> </div> <div> <p class="x_MsoNormal" style="background:white"><span style="color:#212121">if (pm_suspend_target_state != PM_SUSPEND_ON)</span></p> </div> <div id="x_ms-outlook-mobile-signature"> <div> <p class="x_MsoNormal"> </p> </div> <p class="x_MsoNormal">Thanks,<br> Lijo</p> </div> <div class="x_MsoNormal" align="center" style="text-align:center"> <hr size="2" width="98%" align="center"> </div> <div id="x_divRplyFwdMsg"> <p class="x_MsoNormal"><b><span style="color:black">From:</span></b><span style="color:black"> amd-gfx <<a href="mailto:amd-gfx-bounces@lists.freedesktop.org">amd-gfx-bounces@lists.freedesktop.org</a>> on behalf of Mario Limonciello <<a href="mailto:mario.limonciello@amd.com">mario.limonciello@amd.com</a>><br> <b>Sent:</b> Wednesday, January 26, 2022 9:39:42 AM<br> <b>To:</b> <a href="mailto:amd-gfx@lists.freedesktop.org">amd-gfx@lists.freedesktop.org</a> <<a href="mailto:amd-gfx@lists.freedesktop.org">amd-gfx@lists.freedesktop.org</a>><br> <b>Cc:</b> Liang, Prike <<a href="mailto:Prike.Liang@amd.com">Prike.Liang@amd.com</a>>; Limonciello, Mario <<a href="mailto:Mario.Limonciello@amd.com">Mario.Limonciello@amd.com</a>><br> <b>Subject:</b> [PATCH v5 2/4] drm/amd: add support to check whether the system is set to s3</span> </p> <div> <p class="x_MsoNormal"> </p> </div> </div> <div> <div> <p class="x_MsoNormal" style="margin-bottom:12.0pt">This will be used to help make decisions on what to do in<br> misconfigured systems.<br> <br> Signed-off-by: Mario Limonciello <<a href="mailto:mario.limonciello@amd.com">mario.limonciello@amd.com</a>><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</p> </div> </div> </div> </div> </div> </div> </body> </html>