RE: [PATCH] drm/amdgpu: Warn about disabled DPM

[Quan, Evan]

[AMD Official Use Only - Internal Distribution Only]

Reviewed-by: Evan Quan <evan.q...@amd.com>

-----Original Message-----
From: amd-gfx <amd-gfx-boun...@lists.freedesktop.org> On Behalf Of Paul Menzel
Sent: Wednesday, June 17, 2020 3:17 PM
To: Deucher, Alexander <alexander.deuc...@amd.com>; Koenig, Christian 
<christian.koe...@amd.com>
Cc: Paul Menzel <pmen...@molgen.mpg.de>; amd-gfx@lists.freedesktop.org
Subject: [PATCH] drm/amdgpu: Warn about disabled DPM

Currently, besides there is no explicit message, that DPM is disabled.
The user would need to know, that the missing success line is an indicator.

    [drm] amdgpu: dpm initialized

So, add an explicit message, and make it log level warning, as disabling dpm is 
not the default.

Resolves: 
https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgitlab.freedesktop.org%2Fdrm%2Famd%2F-%2Fissues%2F1173&amp;data=02%7C01%7Cevan.quan%40amd.com%7C4ba79bb63487426f074d08d81290e615%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637279760886452253&amp;sdata=if2K3qoBopyK%2FLqycejyBac7JuifQk%2F6O576wubDSDA%3D&amp;reserved=0
Cc: amd-gfx@lists.freedesktop.org
Signed-off-by: Paul Menzel <pmen...@molgen.mpg.de>
---
 drivers/gpu/drm/amd/amdgpu/kv_dpm.c | 4 +++-  
drivers/gpu/drm/amd/amdgpu/si_dpm.c | 4 +++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/kv_dpm.c 
b/drivers/gpu/drm/amd/amdgpu/kv_dpm.c
index 4b3faaccecb9..071215e8039a 100644
--- a/drivers/gpu/drm/amd/amdgpu/kv_dpm.c
+++ b/drivers/gpu/drm/amd/amdgpu/kv_dpm.c
@@ -3014,8 +3014,10 @@ static int kv_dpm_sw_init(void *handle)
 adev->pm.current_mclk = adev->clock.default_mclk;
 adev->pm.int_thermal_type = THERMAL_TYPE_NONE;

-if (amdgpu_dpm == 0)
+if (amdgpu_dpm == 0) {
+DRM_WARN("amdgpu: dpm disabled\n");
 return 0;
+}

 INIT_WORK(&adev->pm.dpm.thermal.work, amdgpu_dpm_thermal_work_handler);
 mutex_lock(&adev->pm.mutex);
diff --git a/drivers/gpu/drm/amd/amdgpu/si_dpm.c 
b/drivers/gpu/drm/amd/amdgpu/si_dpm.c
index c00ba4b23c9a..6af89587f80c 100644
--- a/drivers/gpu/drm/amd/amdgpu/si_dpm.c
+++ b/drivers/gpu/drm/amd/amdgpu/si_dpm.c
@@ -7687,8 +7687,10 @@ static int si_dpm_sw_init(void *handle)
 adev->pm.current_mclk = adev->clock.default_mclk;
 adev->pm.int_thermal_type = THERMAL_TYPE_NONE;

-if (amdgpu_dpm == 0)
+if (amdgpu_dpm == 0) {
+DRM_INFO("amdgpu: dpm disabled\n");
 return 0;
+}

 ret = si_dpm_init_microcode(adev);
 if (ret)
--
2.27.0

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