diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.14.71/4688-drm-amdgpu-No-action-when-VCN-PG-state-is-unchanged.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.14.71/4688-drm-amdgpu-No-action-when-VCN-PG-state-is-unchanged.patch | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.14.71/4688-drm-amdgpu-No-action-when-VCN-PG-state-is-unchanged.patch b/common/recipes-kernel/linux/linux-yocto-4.14.71/4688-drm-amdgpu-No-action-when-VCN-PG-state-is-unchanged.patch new file mode 100644 index 00000000..fdc5a03e --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.14.71/4688-drm-amdgpu-No-action-when-VCN-PG-state-is-unchanged.patch @@ -0,0 +1,61 @@ +From e1e9c636bd5b19b538d05c8885a19e9355923e74 Mon Sep 17 00:00:00 2001 +From: James Zhu <jzhums@gmail.com> +Date: Thu, 13 Sep 2018 16:55:44 -0400 +Subject: [PATCH 4688/5725] drm/amdgpu:No action when VCN PG state is unchanged +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +When VCN PG state is unchanged, it is unnecessary to reset power +gate state + +Signed-off-by: James Zhu <James.Zhu@amd.com> +Acked-by: Alex Deucher <alexander.deucher@amd.com> +Acked-by: Christian König <christian.koenig@amd.com> +--- + 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 d0c428f..5b219e6 100644 +--- a/drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c ++++ b/drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c +@@ -1637,12 +1637,20 @@ 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 + |