[PATCH] drm/amdgpu: check whether s2idle is enabled to determine s0ix

[Lazar, Lijo]

[AMD Public Use]

Maybe just check the global (pm_suspend_target_state == PM_SUSPEND_TO_IDLE) and decide whether it's going to s0ix.

Thanks,
Lijo

-----Original Message-----
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of Liang, Prike
Sent: Tuesday, March 30, 2021 4:32 PM
To: Deucher, Alexander <Alexander.Deucher at amd.com>; amd-gfx at lists.freedesktop.org
Cc: Deucher, Alexander <Alexander.Deucher at amd.com>
Subject: RE: [PATCH] drm/amdgpu: check whether s2idle is enabled to determine s0ix

[AMD Public Use]

[AMD Public Use]

This issue should occur on the hybrid s0i3 system which forces mem_sleep to deep level on the s0i3 enabled platform. We may need use the acpi_target_system_state() to identify the system target sleep level and then handle AMDGPU Sx[0..5] suspend/resume respectively.

Reviewed-by: Prike Liang <Prike.Liang at amd.com>

Thanks,
Prike
> -----Original Message-----
> From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of 
> Alex Deucher
> Sent: Tuesday, March 30, 2021 1:41 AM
> To: amd-gfx at lists.freedesktop.org
> Cc: Deucher, Alexander <Alexander.Deucher at amd.com>
> Subject: [PATCH] drm/amdgpu: check whether s2idle is enabled to 
> determine s0ix
>
> For legacy S3, we need to use different handling in the driver.
> Suggested by Heiko Przybyl.
>
> Bug:
> https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgitl
> a
> b.freedesktop.org%2Fdrm%2Famd%2F-
> %2Fissues%2F1553&data=04%7C01%7CPrike.Liang%40amd.com%7Ce0a
> 7dd7c6958449814c508d8f2d9d1c1%7C3dd8961fe4884e608e11a82d994e183d
> %7C0%7C0%7C637526364636883173%7CUnknown%7CTWFpbGZsb3d8eyJWI
> joiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1
> 000&sdata=SHtEYsQz5%2FgkSGXE%2B9OFzN4yaRgkw6A2xs9IxVy3e5Q%
> 3D&reserved=0
> Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
> index 2e9b16fb3fcd..b64c002b9aa3 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
> @@ -26,6 +26,7 @@
>  #include <linux/slab.h>
>  #include <linux/power_supply.h>
>  #include <linux/pm_runtime.h>
> +#include <linux/suspend.h>
>  #include <acpi/video.h>
>  #include <acpi/actbl.h>
>
> @@ -906,7 +907,7 @@ bool amdgpu_acpi_is_s0ix_supported(struct
> amdgpu_device *adev)  #if defined(CONFIG_AMD_PMC) ||
> defined(CONFIG_AMD_PMC_MODULE)
>  if (acpi_gbl_FADT.flags & ACPI_FADT_LOW_POWER_S0) {  if (adev->flags 
> & AMD_IS_APU) -return true;
> +return pm_suspend_default_s2idle();
>  }
>  #endif
>  return false;
> --
> 2.30.2
>
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