From 3eb4c56422c7b8e3f567b2412d0c4f09f2899fb8 Mon Sep 17 00:00:00 2001 From: Huang Rui Date: Tue, 22 Sep 2020 18:59:07 +0800 Subject: [PATCH] drm/amdgpu: add gfx power gating for gfx10 This patch adds power gating handler for gfx10. v2: simplify function Signed-off-by: Huang Rui Acked-by: Alex Deucher Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c index e27d0d5..9a8d3f7 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c @@ -7584,6 +7584,27 @@ static bool gfx_v10_0_is_rlcg_access_range(struct amdgpu_device *adev, u32 offse return gfx_v10_0_check_rlcg_range(adev, offset, NULL, 0); } +static void gfx_v10_cntl_power_gating(struct amdgpu_device *adev, bool enable) +{ + u32 data = RREG32_SOC15(GC, 0, mmRLC_PG_CNTL); + + if (enable && (adev->cg_flags & AMD_PG_SUPPORT_GFX_PG)) + data |= RLC_PG_CNTL__GFX_POWER_GATING_ENABLE_MASK; + else + data &= ~RLC_PG_CNTL__GFX_POWER_GATING_ENABLE_MASK; + + WREG32_SOC15(GC, 0, mmRLC_PG_CNTL, data); +} + +static void gfx_v10_cntl_pg(struct amdgpu_device *adev, bool enable) +{ + amdgpu_gfx_rlc_enter_safe_mode(adev); + + gfx_v10_cntl_power_gating(adev, enable); + + amdgpu_gfx_rlc_exit_safe_mode(adev); +} + static const struct amdgpu_rlc_funcs gfx_v10_0_rlc_funcs = { .is_rlc_enabled = gfx_v10_0_is_rlc_enabled, .set_safe_mode = gfx_v10_0_set_safe_mode, @@ -7631,6 +7652,9 @@ static int gfx_v10_0_set_powergating_state(void *handle, case CHIP_NAVY_FLOUNDER: amdgpu_gfx_off_ctrl(adev, enable); break; + case CHIP_VANGOGH: + gfx_v10_cntl_pg(adev, enable); + break; default: break; } -- 2.7.4