Re: [PATCH 16/21] drm/amdgpu: enable JPEG2.0 dpm

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On 2019-11-14 11:03 a.m., Alex Deucher wrote:
On Tue, Nov 12, 2019 at 1:04 PM Leo Liu <leo.liu@xxxxxxx> wrote:
By using its own enabling function

Signed-off-by: Leo Liu <leo.liu@xxxxxxx>
---
  drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c |  8 ++++++++
  drivers/gpu/drm/amd/amdgpu/amdgpu_pm.h |  1 +
  drivers/gpu/drm/amd/amdgpu/jpeg_v2_0.c | 10 +++++++++-
  3 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
index f205f56e3358..b7150171e8d7 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
@@ -2718,6 +2718,14 @@ void amdgpu_pm_print_power_states(struct amdgpu_device *adev)

  }

+void amdgpu_dpm_enable_jpeg(struct amdgpu_device *adev, bool enable)
+{
I would add an "if (is_support_sw_smu(adev))" check here in case this
ever gets called on older asics.

Thanks Alex for the reviews.

I got "is_support_sw_smu()" in place in the beginning, and later has it removed.

because from "is_support_sw_smu",

"if (adev->asic_type == CHIP_VEGA20)
        return (amdgpu_dpm == 2) ? true : false;
else if (adev->asic_type >= CHIP_ARCTURUS)
        return true;
else
        return false;"

JPEG2.0 and above, fits >=CHIP_ARCTURUS, so always return true.

But I will add it back as you suggested, since it has no harm, also in case when condition changed.

Thanks again.

Leo


Other than that, the series (with
the v2 patches) is:
Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx>

+       int ret = smu_dpm_set_power_gate(&adev->smu, AMD_IP_BLOCK_TYPE_JPEG, enable);
+       if (ret)
+               DRM_ERROR("[SW SMU]: dpm enable jpeg failed, state = %s, ret = %d. \n",
+                         enable ? "true" : "false", ret);
+}
+
  int amdgpu_pm_virt_sysfs_init(struct amdgpu_device *adev)
  {
         int ret = 0;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.h
index ef31448ee8d8..3da1da277805 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.h
@@ -41,5 +41,6 @@ void amdgpu_pm_compute_clocks(struct amdgpu_device *adev);
  void amdgpu_dpm_thermal_work_handler(struct work_struct *work);
  void amdgpu_dpm_enable_uvd(struct amdgpu_device *adev, bool enable);
  void amdgpu_dpm_enable_vce(struct amdgpu_device *adev, bool enable);
+void amdgpu_dpm_enable_jpeg(struct amdgpu_device *adev, bool enable);

  #endif
diff --git a/drivers/gpu/drm/amd/amdgpu/jpeg_v2_0.c b/drivers/gpu/drm/amd/amdgpu/jpeg_v2_0.c
index 3869730b2331..a78292d84854 100644
--- a/drivers/gpu/drm/amd/amdgpu/jpeg_v2_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/jpeg_v2_0.c
@@ -333,6 +333,9 @@ static int jpeg_v2_0_start(struct amdgpu_device *adev)
         struct amdgpu_ring *ring = &adev->jpeg.inst->ring_dec;
         int r;

+       if (adev->pm.dpm_enabled)
+               amdgpu_dpm_enable_jpeg(adev, true);
+
         /* disable power gating */
         r = jpeg_v2_0_disable_power_gating(adev);
         if (r)
@@ -388,8 +391,13 @@ static int jpeg_v2_0_stop(struct amdgpu_device *adev)

         /* enable power gating */
         r = jpeg_v2_0_enable_power_gating(adev);
+       if (r)
+               return r;

-       return r;
+       if (adev->pm.dpm_enabled)
+               amdgpu_dpm_enable_jpeg(adev, false);
+
+       return 0;
  }

  /**
--
2.17.1

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