Ping
Alex and Christian, Could you give a review on this updated patch? Thanks & Best Regards! James Zhu ________________________________ From: James Zhu <[email protected]> Sent: Thursday, September 13, 2018 4:55 PM To: [email protected] Cc: Zhu, James Subject: [PATCH v2] drm/amdgpu:No action when VCN PG state is unchanged When VCN PG state is unchanged, it is unnecessary to reset power gate state Signed-off-by: James Zhu <[email protected]> --- drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h | 1 + drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c | 12 ++++++++++-- 2 files changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h index 0b0b863..d2219ab 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h @@ -69,6 +69,7 @@ struct amdgpu_vcn { struct amdgpu_ring ring_jpeg; struct amdgpu_irq_src irq; unsigned num_enc_rings; + enum amd_powergating_state cur_state; }; int amdgpu_vcn_sw_init(struct amdgpu_device *adev); diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c b/drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c index 2664bb2..2cde0b4 100644 --- a/drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c +++ b/drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c @@ -1633,12 +1633,20 @@ static int vcn_v1_0_set_powergating_state(void *handle, * revisit this when there is a cleaner line between * the smc and the hw blocks */ + int ret; struct amdgpu_device *adev = (struct amdgpu_device *)handle; + if(state == adev->vcn.cur_state) + return 0; + if (state == AMD_PG_STATE_GATE) - return vcn_v1_0_stop(adev); + ret = vcn_v1_0_stop(adev); else - return vcn_v1_0_start(adev); + ret = vcn_v1_0_start(adev); + + if(!ret) + adev->vcn.cur_state = state; + return ret; } static const struct amd_ip_funcs vcn_v1_0_ip_funcs = { -- 2.7.4
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