drivers/gpu/drm/amd/amdgpu/hdp_v5_2.c - linux - Git at Google

 /*
  * Copyright 2021 Advanced Micro Devices, Inc.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
  * to deal in the Software without restriction, including without limitation
  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  * and/or sell copies of the Software, and to permit persons to whom the
  * Software is furnished to do so, subject to the following conditions:
  *
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  * OTHER DEALINGS IN THE SOFTWARE.
  *
  */
 #include "amdgpu.h"
 #include "amdgpu_atombios.h"
 #include "hdp_v5_2.h"

 #include "hdp/hdp_5_2_1_offset.h"
 #include "hdp/hdp_5_2_1_sh_mask.h"
 #include <uapi/linux/kfd_ioctl.h>

 static void hdp_v5_2_flush_hdp(struct amdgpu_device *adev,
 				struct amdgpu_ring *ring)
 {
 	if (!ring || !ring->funcs->emit_wreg)
 		WREG32_NO_KIQ((adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL) >> 2,
 			0);
 	else
 		amdgpu_ring_emit_wreg(ring,
 			(adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL) >> 2,
 			0);
 }

 static void hdp_v5_2_update_mem_power_gating(struct amdgpu_device *adev,
 					     bool enable)
 {
 	uint32_t hdp_clk_cntl;
 	uint32_t hdp_mem_pwr_cntl;

 	if (!(adev->cg_flags & (AMD_CG_SUPPORT_HDP_LS |
 				AMD_CG_SUPPORT_HDP_DS |
 				AMD_CG_SUPPORT_HDP_SD)))
 		return;

 	hdp_clk_cntl = RREG32_SOC15(HDP, 0, regHDP_CLK_CNTL);
 	hdp_mem_pwr_cntl = RREG32_SOC15(HDP, 0, regHDP_MEM_POWER_CTRL);

 	/* Before doing clock/power mode switch, forced on MEM clock */
 	hdp_clk_cntl = REG_SET_FIELD(hdp_clk_cntl, HDP_CLK_CNTL,
 				     ATOMIC_MEM_CLK_SOFT_OVERRIDE, 1);
 	hdp_clk_cntl = REG_SET_FIELD(hdp_clk_cntl, HDP_CLK_CNTL,
 				     RC_MEM_CLK_SOFT_OVERRIDE, 1);
 	WREG32_SOC15(HDP, 0, regHDP_CLK_CNTL, hdp_clk_cntl);

 	/* disable clock and power gating before any changing */
 	hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL,
 					 ATOMIC_MEM_POWER_CTRL_EN, 0);
 	hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL,
 					 ATOMIC_MEM_POWER_LS_EN, 0);
 	hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL,
 					 ATOMIC_MEM_POWER_DS_EN, 0);
 	hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL,
 					 ATOMIC_MEM_POWER_SD_EN, 0);
 	hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL,
 					 RC_MEM_POWER_CTRL_EN, 0);
 	hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL,
 					 RC_MEM_POWER_LS_EN, 0);
 	hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL,
 					 RC_MEM_POWER_DS_EN, 0);
 	hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL,
 					 RC_MEM_POWER_SD_EN, 0);
 	WREG32_SOC15(HDP, 0, regHDP_MEM_POWER_CTRL, hdp_mem_pwr_cntl);

 	/* Already disabled above. The actions below are for "enabled" only */
 	if (enable) {
 		/* only one clock gating mode (LS/DS/SD) can be enabled */
 		if (adev->cg_flags & AMD_CG_SUPPORT_HDP_SD) {
 			hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl,
 							 HDP_MEM_POWER_CTRL,
 							 ATOMIC_MEM_POWER_SD_EN, 1);
 			hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl,
 							 HDP_MEM_POWER_CTRL,
 							 RC_MEM_POWER_SD_EN, 1);
 		} else if (adev->cg_flags & AMD_CG_SUPPORT_HDP_LS) {
 			hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl,
 							 HDP_MEM_POWER_CTRL,
 							 ATOMIC_MEM_POWER_LS_EN, 1);
 			hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl,
 							 HDP_MEM_POWER_CTRL,
 							 RC_MEM_POWER_LS_EN, 1);
 		} else if (adev->cg_flags & AMD_CG_SUPPORT_HDP_DS) {
 			hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl,
 							 HDP_MEM_POWER_CTRL,
 							 ATOMIC_MEM_POWER_DS_EN, 1);
 			hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl,
 							 HDP_MEM_POWER_CTRL,
 							 RC_MEM_POWER_DS_EN, 1);
 		}

 		/* confirmed that ATOMIC/RC_MEM_POWER_CTRL_EN have to be set for SRAM LS/DS/SD */
 		if (adev->cg_flags & (AMD_CG_SUPPORT_HDP_LS | AMD_CG_SUPPORT_HDP_DS |
 				      AMD_CG_SUPPORT_HDP_SD)) {
 			hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL,
 							 ATOMIC_MEM_POWER_CTRL_EN, 1);
 			hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL,
 							 RC_MEM_POWER_CTRL_EN, 1);
 			WREG32_SOC15(HDP, 0, regHDP_MEM_POWER_CTRL, hdp_mem_pwr_cntl);
 		}
 	}

 	/* disable MEM clock override after clock/power mode changing */
 	hdp_clk_cntl = REG_SET_FIELD(hdp_clk_cntl, HDP_CLK_CNTL,
 				     ATOMIC_MEM_CLK_SOFT_OVERRIDE, 0);
 	hdp_clk_cntl = REG_SET_FIELD(hdp_clk_cntl, HDP_CLK_CNTL,
 				     RC_MEM_CLK_SOFT_OVERRIDE, 0);
 	WREG32_SOC15(HDP, 0, regHDP_CLK_CNTL, hdp_clk_cntl);
 }

 static void hdp_v5_2_update_medium_grain_clock_gating(struct amdgpu_device *adev,
 						      bool enable)
 {
 	uint32_t hdp_clk_cntl;

 	if (!(adev->cg_flags & AMD_CG_SUPPORT_HDP_MGCG))
 		return;

 	hdp_clk_cntl = RREG32_SOC15(HDP, 0, regHDP_CLK_CNTL);

 	if (enable) {
 		hdp_clk_cntl &=
 			~(uint32_t)
 			(HDP_CLK_CNTL__ATOMIC_MEM_CLK_SOFT_OVERRIDE_MASK |
 			 HDP_CLK_CNTL__RC_MEM_CLK_SOFT_OVERRIDE_MASK |
 			 HDP_CLK_CNTL__DBUS_CLK_SOFT_OVERRIDE_MASK |
 			 HDP_CLK_CNTL__DYN_CLK_SOFT_OVERRIDE_MASK |
 			 HDP_CLK_CNTL__XDP_REG_CLK_SOFT_OVERRIDE_MASK |
 			 HDP_CLK_CNTL__HDP_REG_CLK_SOFT_OVERRIDE_MASK);
 	} else {
 		hdp_clk_cntl |= HDP_CLK_CNTL__ATOMIC_MEM_CLK_SOFT_OVERRIDE_MASK |
 			HDP_CLK_CNTL__RC_MEM_CLK_SOFT_OVERRIDE_MASK |
 			HDP_CLK_CNTL__DBUS_CLK_SOFT_OVERRIDE_MASK |
 			HDP_CLK_CNTL__DYN_CLK_SOFT_OVERRIDE_MASK |
 			HDP_CLK_CNTL__XDP_REG_CLK_SOFT_OVERRIDE_MASK |
 			HDP_CLK_CNTL__HDP_REG_CLK_SOFT_OVERRIDE_MASK;
 	}

 	WREG32_SOC15(HDP, 0, regHDP_CLK_CNTL, hdp_clk_cntl);
 }

 static void hdp_v5_2_get_clockgating_state(struct amdgpu_device *adev,
 					   u64 *flags)
 {
 	uint32_t tmp;

 	/* AMD_CG_SUPPORT_HDP_MGCG */
 	tmp = RREG32_SOC15(HDP, 0, regHDP_CLK_CNTL);
 	if (!(tmp & (HDP_CLK_CNTL__ATOMIC_MEM_CLK_SOFT_OVERRIDE_MASK |
 		     HDP_CLK_CNTL__RC_MEM_CLK_SOFT_OVERRIDE_MASK |
 		     HDP_CLK_CNTL__DBUS_CLK_SOFT_OVERRIDE_MASK |
 		     HDP_CLK_CNTL__DYN_CLK_SOFT_OVERRIDE_MASK |
 		     HDP_CLK_CNTL__XDP_REG_CLK_SOFT_OVERRIDE_MASK |
 		     HDP_CLK_CNTL__HDP_REG_CLK_SOFT_OVERRIDE_MASK)))
 		*flags |= AMD_CG_SUPPORT_HDP_MGCG;

 	/* AMD_CG_SUPPORT_HDP_LS/DS/SD */
 	tmp = RREG32_SOC15(HDP, 0, regHDP_MEM_POWER_CTRL);
 	if (tmp & HDP_MEM_POWER_CTRL__ATOMIC_MEM_POWER_LS_EN_MASK)
 		*flags |= AMD_CG_SUPPORT_HDP_LS;
 	else if (tmp & HDP_MEM_POWER_CTRL__ATOMIC_MEM_POWER_DS_EN_MASK)
 		*flags |= AMD_CG_SUPPORT_HDP_DS;
 	else if (tmp & HDP_MEM_POWER_CTRL__ATOMIC_MEM_POWER_SD_EN_MASK)
 		*flags |= AMD_CG_SUPPORT_HDP_SD;
 }

 static void hdp_v5_2_update_clock_gating(struct amdgpu_device *adev,
 					      bool enable)
 {
 	hdp_v5_2_update_mem_power_gating(adev, enable);
 	hdp_v5_2_update_medium_grain_clock_gating(adev, enable);
 }

 const struct amdgpu_hdp_funcs hdp_v5_2_funcs = {
 	.flush_hdp = hdp_v5_2_flush_hdp,
 	.update_clock_gating = hdp_v5_2_update_clock_gating,
 	.get_clock_gating_state = hdp_v5_2_get_clockgating_state,
 };
	/*
	* Copyright 2021 Advanced Micro Devices, Inc.
	*
	* Permission is hereby granted, free of charge, to any person obtaining a
	* copy of this software and associated documentation files (the "Software"),
	* to deal in the Software without restriction, including without limitation
	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	* and/or sell copies of the Software, and to permit persons to whom the
	* Software is furnished to do so, subject to the following conditions:
	*
	* The above copyright notice and this permission notice shall be included in
	* all copies or substantial portions of the Software.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	* OTHER DEALINGS IN THE SOFTWARE.
	*
	*/
	#include "amdgpu.h"
	#include "amdgpu_atombios.h"
	#include "hdp_v5_2.h"

	#include "hdp/hdp_5_2_1_offset.h"
	#include "hdp/hdp_5_2_1_sh_mask.h"
	#include <uapi/linux/kfd_ioctl.h>

	static void hdp_v5_2_flush_hdp(struct amdgpu_device *adev,
	struct amdgpu_ring *ring)
	{
	if (!ring \|\| !ring->funcs->emit_wreg)
	WREG32_NO_KIQ((adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL) >> 2,
	0);
	else
	amdgpu_ring_emit_wreg(ring,
	(adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL) >> 2,
	0);
	}

	static void hdp_v5_2_update_mem_power_gating(struct amdgpu_device *adev,
	bool enable)
	{
	uint32_t hdp_clk_cntl;
	uint32_t hdp_mem_pwr_cntl;

	if (!(adev->cg_flags & (AMD_CG_SUPPORT_HDP_LS \|
	AMD_CG_SUPPORT_HDP_DS \|
	AMD_CG_SUPPORT_HDP_SD)))
	return;

	hdp_clk_cntl = RREG32_SOC15(HDP, 0, regHDP_CLK_CNTL);
	hdp_mem_pwr_cntl = RREG32_SOC15(HDP, 0, regHDP_MEM_POWER_CTRL);

	/* Before doing clock/power mode switch, forced on MEM clock */
	hdp_clk_cntl = REG_SET_FIELD(hdp_clk_cntl, HDP_CLK_CNTL,
	ATOMIC_MEM_CLK_SOFT_OVERRIDE, 1);
	hdp_clk_cntl = REG_SET_FIELD(hdp_clk_cntl, HDP_CLK_CNTL,
	RC_MEM_CLK_SOFT_OVERRIDE, 1);
	WREG32_SOC15(HDP, 0, regHDP_CLK_CNTL, hdp_clk_cntl);

	/* disable clock and power gating before any changing */
	hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL,
	ATOMIC_MEM_POWER_CTRL_EN, 0);
	hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL,
	ATOMIC_MEM_POWER_LS_EN, 0);
	hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL,
	ATOMIC_MEM_POWER_DS_EN, 0);
	hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL,
	ATOMIC_MEM_POWER_SD_EN, 0);
	hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL,
	RC_MEM_POWER_CTRL_EN, 0);
	hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL,
	RC_MEM_POWER_LS_EN, 0);
	hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL,
	RC_MEM_POWER_DS_EN, 0);
	hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL,
	RC_MEM_POWER_SD_EN, 0);
	WREG32_SOC15(HDP, 0, regHDP_MEM_POWER_CTRL, hdp_mem_pwr_cntl);

	/* Already disabled above. The actions below are for "enabled" only */
	if (enable) {
	/* only one clock gating mode (LS/DS/SD) can be enabled */
	if (adev->cg_flags & AMD_CG_SUPPORT_HDP_SD) {
	hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl,
	HDP_MEM_POWER_CTRL,
	ATOMIC_MEM_POWER_SD_EN, 1);
	hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl,
	HDP_MEM_POWER_CTRL,
	RC_MEM_POWER_SD_EN, 1);
	} else if (adev->cg_flags & AMD_CG_SUPPORT_HDP_LS) {
	hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl,
	HDP_MEM_POWER_CTRL,
	ATOMIC_MEM_POWER_LS_EN, 1);
	hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl,
	HDP_MEM_POWER_CTRL,
	RC_MEM_POWER_LS_EN, 1);
	} else if (adev->cg_flags & AMD_CG_SUPPORT_HDP_DS) {
	hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl,
	HDP_MEM_POWER_CTRL,
	ATOMIC_MEM_POWER_DS_EN, 1);
	hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl,
	HDP_MEM_POWER_CTRL,
	RC_MEM_POWER_DS_EN, 1);
	}

	/* confirmed that ATOMIC/RC_MEM_POWER_CTRL_EN have to be set for SRAM LS/DS/SD */
	if (adev->cg_flags & (AMD_CG_SUPPORT_HDP_LS \| AMD_CG_SUPPORT_HDP_DS \|
	AMD_CG_SUPPORT_HDP_SD)) {
	hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL,
	ATOMIC_MEM_POWER_CTRL_EN, 1);
	hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL,
	RC_MEM_POWER_CTRL_EN, 1);
	WREG32_SOC15(HDP, 0, regHDP_MEM_POWER_CTRL, hdp_mem_pwr_cntl);
	}
	}

	/* disable MEM clock override after clock/power mode changing */
	hdp_clk_cntl = REG_SET_FIELD(hdp_clk_cntl, HDP_CLK_CNTL,
	ATOMIC_MEM_CLK_SOFT_OVERRIDE, 0);
	hdp_clk_cntl = REG_SET_FIELD(hdp_clk_cntl, HDP_CLK_CNTL,
	RC_MEM_CLK_SOFT_OVERRIDE, 0);
	WREG32_SOC15(HDP, 0, regHDP_CLK_CNTL, hdp_clk_cntl);
	}

	static void hdp_v5_2_update_medium_grain_clock_gating(struct amdgpu_device *adev,
	bool enable)
	{
	uint32_t hdp_clk_cntl;

	if (!(adev->cg_flags & AMD_CG_SUPPORT_HDP_MGCG))
	return;

	hdp_clk_cntl = RREG32_SOC15(HDP, 0, regHDP_CLK_CNTL);

	if (enable) {
	hdp_clk_cntl &=
	~(uint32_t)
	(HDP_CLK_CNTL__ATOMIC_MEM_CLK_SOFT_OVERRIDE_MASK \|
	HDP_CLK_CNTL__RC_MEM_CLK_SOFT_OVERRIDE_MASK \|
	HDP_CLK_CNTL__DBUS_CLK_SOFT_OVERRIDE_MASK \|
	HDP_CLK_CNTL__DYN_CLK_SOFT_OVERRIDE_MASK \|
	HDP_CLK_CNTL__XDP_REG_CLK_SOFT_OVERRIDE_MASK \|
	HDP_CLK_CNTL__HDP_REG_CLK_SOFT_OVERRIDE_MASK);
	} else {
	hdp_clk_cntl \|= HDP_CLK_CNTL__ATOMIC_MEM_CLK_SOFT_OVERRIDE_MASK \|
	HDP_CLK_CNTL__RC_MEM_CLK_SOFT_OVERRIDE_MASK \|
	HDP_CLK_CNTL__DBUS_CLK_SOFT_OVERRIDE_MASK \|
	HDP_CLK_CNTL__DYN_CLK_SOFT_OVERRIDE_MASK \|
	HDP_CLK_CNTL__XDP_REG_CLK_SOFT_OVERRIDE_MASK \|
	HDP_CLK_CNTL__HDP_REG_CLK_SOFT_OVERRIDE_MASK;
	}

	WREG32_SOC15(HDP, 0, regHDP_CLK_CNTL, hdp_clk_cntl);
	}

	static void hdp_v5_2_get_clockgating_state(struct amdgpu_device *adev,
	u64 *flags)
	{
	uint32_t tmp;

	/* AMD_CG_SUPPORT_HDP_MGCG */
	tmp = RREG32_SOC15(HDP, 0, regHDP_CLK_CNTL);
	if (!(tmp & (HDP_CLK_CNTL__ATOMIC_MEM_CLK_SOFT_OVERRIDE_MASK \|
	HDP_CLK_CNTL__RC_MEM_CLK_SOFT_OVERRIDE_MASK \|
	HDP_CLK_CNTL__DBUS_CLK_SOFT_OVERRIDE_MASK \|
	HDP_CLK_CNTL__DYN_CLK_SOFT_OVERRIDE_MASK \|
	HDP_CLK_CNTL__XDP_REG_CLK_SOFT_OVERRIDE_MASK \|
	HDP_CLK_CNTL__HDP_REG_CLK_SOFT_OVERRIDE_MASK)))
	*flags \|= AMD_CG_SUPPORT_HDP_MGCG;

	/* AMD_CG_SUPPORT_HDP_LS/DS/SD */
	tmp = RREG32_SOC15(HDP, 0, regHDP_MEM_POWER_CTRL);
	if (tmp & HDP_MEM_POWER_CTRL__ATOMIC_MEM_POWER_LS_EN_MASK)
	*flags \|= AMD_CG_SUPPORT_HDP_LS;
	else if (tmp & HDP_MEM_POWER_CTRL__ATOMIC_MEM_POWER_DS_EN_MASK)
	*flags \|= AMD_CG_SUPPORT_HDP_DS;
	else if (tmp & HDP_MEM_POWER_CTRL__ATOMIC_MEM_POWER_SD_EN_MASK)
	*flags \|= AMD_CG_SUPPORT_HDP_SD;
	}

	static void hdp_v5_2_update_clock_gating(struct amdgpu_device *adev,
	bool enable)
	{
	hdp_v5_2_update_mem_power_gating(adev, enable);
	hdp_v5_2_update_medium_grain_clock_gating(adev, enable);
	}

	const struct amdgpu_hdp_funcs hdp_v5_2_funcs = {
	.flush_hdp = hdp_v5_2_flush_hdp,
	.update_clock_gating = hdp_v5_2_update_clock_gating,
	.get_clock_gating_state = hdp_v5_2_get_clockgating_state,
	};