On 2020-01-21 12:47 p.m., James Zhu wrote:
On 2020-01-21 12:29 p.m., Leo Liu wrote:
On 2020-01-21 11:19 a.m., James Zhu wrote:
Fix a bug for the 2nd vcn instance at start and stop.
Signed-off-by: James Zhu <James.Zhu@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/vcn_v2_5.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_v2_5.c
b/drivers/gpu/drm/amd/amdgpu/vcn_v2_5.c
index c351d1a..740a291 100644
--- a/drivers/gpu/drm/amd/amdgpu/vcn_v2_5.c
+++ b/drivers/gpu/drm/amd/amdgpu/vcn_v2_5.c
@@ -891,8 +891,10 @@ static int vcn_v2_5_start(struct amdgpu_device
*adev)
for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
if (adev->vcn.harvest_config & (1 << i))
continue;
- if (adev->pg_flags & AMD_PG_SUPPORT_VCN_DPG)
- return vcn_v2_5_start_dpg_mode(adev, i,
adev->vcn.indirect_sram);
+ if (adev->pg_flags & AMD_PG_SUPPORT_VCN_DPG) {
+ r = vcn_v2_5_start_dpg_mode(adev, i,
adev->vcn.indirect_sram);
+ continue;
+ }
"r" is not being considered, and after the loop, it will be going to
the code below, is it correct?
Since DPG mode start/stop always return 0. I have added code to return
0 below under DPG mode
Then you should move the "return 0" here instead of adding two more
unnecessary lines.
/* disable register anti-hang mechanism */
WREG32_P(SOC15_REG_OFFSET(UVD, i, mmUVD_POWER_STATUS), 0,
@@ -903,6 +905,9 @@ static int vcn_v2_5_start(struct amdgpu_device
*adev)
WREG32_SOC15(UVD, i, mmUVD_STATUS, tmp);
}
+ if (adev->pg_flags & AMD_PG_SUPPORT_VCN_DPG)
+ return 0;
+
/*SW clock gating */
vcn_v2_5_disable_clock_gating(adev);
@@ -1294,10 +1299,9 @@ static int vcn_v2_5_stop(struct
amdgpu_device *adev)
for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
if (adev->vcn.harvest_config & (1 << i))
continue;
-
if (adev->pg_flags & AMD_PG_SUPPORT_VCN_DPG) {
r = vcn_v2_5_stop_dpg_mode(adev, i);
- goto power_off;
+ continue;
}
same problem as above, don't go through the code that isn't necessary.
should be fine under DPG mode.
It's about clean implementation. if not necessary, why do we need to add
them.
Leo
JAmes
Regards,
Leo
/* wait for vcn idle */
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