From c8781f56c85997a42e8ab3254f37c0c301f6b490 Mon Sep 17 00:00:00 2001 From: Huang Rui Date: Thu, 5 Jan 2017 21:07:02 +0800 Subject: [PATCH] drm/amdgpu: add get clockgating_state method for uvd v5&v6 MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Signed-off-by: Huang Rui Reviewed-by: Christian König Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 + drivers/gpu/drm/amd/amdgpu/uvd_v5_0.c | 33 +++++++++++++++++++++++++++++++-- drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c | 33 +++++++++++++++++++++++++++++++-- 3 files changed, 63 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index c237290..5fa7c96 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -1037,6 +1037,7 @@ struct amdgpu_uvd { bool use_ctx_buf; struct amd_sched_entity entity; uint32_t srbm_soft_reset; + bool is_powergated; }; /* diff --git a/drivers/gpu/drm/amd/amdgpu/uvd_v5_0.c b/drivers/gpu/drm/amd/amdgpu/uvd_v5_0.c index 6de6bec..9b49824 100644 --- a/drivers/gpu/drm/amd/amdgpu/uvd_v5_0.c +++ b/drivers/gpu/drm/amd/amdgpu/uvd_v5_0.c @@ -822,16 +822,44 @@ static int uvd_v5_0_set_powergating_state(void *handle, * the smc and the hw blocks */ struct amdgpu_device *adev = (struct amdgpu_device *)handle; + int ret = 0; if (!(adev->pg_flags & AMD_PG_SUPPORT_UVD)) return 0; if (state == AMD_PG_STATE_GATE) { uvd_v5_0_stop(adev); - return 0; + adev->uvd.is_powergated = true; } else { - return uvd_v5_0_start(adev); + ret = uvd_v5_0_start(adev); + if (ret) + goto out; + adev->uvd.is_powergated = false; + } + +out: + return ret; +} + +static void uvd_v5_0_get_clockgating_state(void *handle, u32 *flags) +{ + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + int data; + + mutex_lock(&adev->pm.mutex); + + if (adev->uvd.is_powergated) { + DRM_INFO("Cannot get clockgating state when UVD is powergated.\n"); + goto out; } + + /* AMD_CG_SUPPORT_UVD_MGCG */ + data = RREG32(mmUVD_CGC_CTRL); + if (data & UVD_CGC_CTRL__DYN_CLOCK_MODE_MASK) + *flags |= AMD_CG_SUPPORT_UVD_MGCG; + +out: + mutex_unlock(&adev->pm.mutex); } static const struct amd_ip_funcs uvd_v5_0_ip_funcs = { @@ -849,6 +877,7 @@ static const struct amd_ip_funcs uvd_v5_0_ip_funcs = { .soft_reset = uvd_v5_0_soft_reset, .set_clockgating_state = uvd_v5_0_set_clockgating_state, .set_powergating_state = uvd_v5_0_set_powergating_state, + .get_clockgating_state = uvd_v5_0_get_clockgating_state, }; static const struct amdgpu_ring_funcs uvd_v5_0_ring_funcs = { diff --git a/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c b/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c index ba0bbf7..de7e035 100644 --- a/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c +++ b/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c @@ -1047,6 +1047,7 @@ static int uvd_v6_0_set_powergating_state(void *handle, * the smc and the hw blocks */ struct amdgpu_device *adev = (struct amdgpu_device *)handle; + int ret = 0; if (!(adev->pg_flags & AMD_PG_SUPPORT_UVD)) return 0; @@ -1055,10 +1056,37 @@ static int uvd_v6_0_set_powergating_state(void *handle, if (state == AMD_PG_STATE_GATE) { uvd_v6_0_stop(adev); - return 0; + adev->uvd.is_powergated = true; } else { - return uvd_v6_0_start(adev); + ret = uvd_v6_0_start(adev); + if (ret) + goto out; + adev->uvd.is_powergated = false; + } + +out: + return ret; +} + +static void uvd_v6_0_get_clockgating_state(void *handle, u32 *flags) +{ + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + int data; + + mutex_lock(&adev->pm.mutex); + + if (adev->uvd.is_powergated) { + DRM_INFO("Cannot get clockgating state when UVD is powergated.\n"); + goto out; } + + /* AMD_CG_SUPPORT_UVD_MGCG */ + data = RREG32(mmUVD_CGC_CTRL); + if (data & UVD_CGC_CTRL__DYN_CLOCK_MODE_MASK) + *flags |= AMD_CG_SUPPORT_UVD_MGCG; + +out: + mutex_unlock(&adev->pm.mutex); } static const struct amd_ip_funcs uvd_v6_0_ip_funcs = { @@ -1079,6 +1107,7 @@ static const struct amd_ip_funcs uvd_v6_0_ip_funcs = { .post_soft_reset = uvd_v6_0_post_soft_reset, .set_clockgating_state = uvd_v6_0_set_clockgating_state, .set_powergating_state = uvd_v6_0_set_powergating_state, + .get_clockgating_state = uvd_v6_0_get_clockgating_state, }; static const struct amdgpu_ring_funcs uvd_v6_0_ring_phys_funcs = { -- 2.7.4