Commit 3eb4c564 authored by Huang Rui's avatar Huang Rui Committed by Alex Deucher
Browse files

drm/amdgpu: add gfx power gating for gfx10 



This patch adds power gating handler for gfx10.

v2: simplify function

Signed-off-by: default avatarHuang Rui <ray.huang@amd.com>
Acked-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 682b1f4c

drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c

+24 −0
Original line number Diff line number Diff line
@@ -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;

	}