drm/amd/powerplay: add Carrizo dpm support

This patch enables basic DPM support for Carrizo.
DPM handles dynamic clock and voltage scaling.

v3: delete peci sub-module
v2: use cgs interface directly
    correct define SMU_EnabledFeatureScoreboard_SclkDpmOn
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/hwmgr/Makefile

@@ -3,7 +3,7 @@
 # It provides the hardware management services for the driver.
 
 HARDWARE_MGR = hwmgr.o processpptables.o functiontables.o \
-	       hardwaremanager.o pp_acpi.o
+	       hardwaremanager.o pp_acpi.o cz_hwmgr.o
 
 AMD_PP_HWMGR = $(addprefix $(AMD_PP_PATH)/hwmgr/,$(HARDWARE_MGR))
 

drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c

+/*
+ * Copyright 2015 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 <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include "atom-types.h"
+#include "atombios.h"
+#include "processpptables.h"
+#include "cgs_common.h"
+#include "smu/smu_8_0_d.h"
+#include "smumgr.h"
+#include "hwmgr.h"
+#include "hardwaremanager.h"
+#include "cz_ppsmc.h"
+#include "cz_hwmgr.h"
+#include "power_state.h"
+
+static const unsigned long PhwCz_Magic = (unsigned long) PHM_Cz_Magic;
+
+static struct cz_power_state *cast_PhwCzPowerState(struct pp_hw_power_state *hw_ps)
+{
+	if (PhwCz_Magic != hw_ps->magic)
+		return NULL;
+
+	return (struct cz_power_state *)hw_ps;
+}
+
+static uint32_t cz_get_sclk_level(struct pp_hwmgr *hwmgr,
+				uint32_t clock, uint32_t msg)
+{
+	int i = 0;
+	struct phm_clock_voltage_dependency_table *table =
+				hwmgr->dyn_state.vddc_dependency_on_sclk;
+
+	switch (msg) {
+	case PPSMC_MSG_SetSclkSoftMin:
+	case PPSMC_MSG_SetSclkHardMin:
+		for (i = 0; i < (int)table->count; i++) {
+			if (clock <= table->entries[i].clk)
+				break;
+		}
+		break;
+
+	case PPSMC_MSG_SetSclkSoftMax:
+	case PPSMC_MSG_SetSclkHardMax:
+		for (i = table->count - 1; i >= 0; i--) {
+			if (clock >= table->entries[i].clk)
+				break;
+		}
+		break;
+
+	default:
+		break;
+	}
+	return i;
+}
+
+static uint32_t cz_get_max_sclk_level(struct pp_hwmgr *hwmgr)
+{
+	struct cz_hwmgr *cz_hwmgr = (struct cz_hwmgr *)(hwmgr->backend);
+
+	if (cz_hwmgr->max_sclk_level == 0) {
+		smum_send_msg_to_smc(hwmgr->smumgr, PPSMC_MSG_GetMaxSclkLevel);
+		cz_hwmgr->max_sclk_level = smum_get_argument(hwmgr->smumgr) + 1;
+	}
+
+	return cz_hwmgr->max_sclk_level;
+}
+
+static int cz_initialize_dpm_defaults(struct pp_hwmgr *hwmgr)
+{
+	struct cz_hwmgr *cz_hwmgr = (struct cz_hwmgr *)(hwmgr->backend);
+	uint32_t i;
+
+	cz_hwmgr->gfx_ramp_step = 256*25/100;
+
+	cz_hwmgr->gfx_ramp_delay = 1; /* by default, we delay 1us */
+
+	for (i = 0; i < CZ_MAX_HARDWARE_POWERLEVELS; i++)
+		cz_hwmgr->activity_target[i] = CZ_AT_DFLT;
+
+	cz_hwmgr->mgcg_cgtt_local0 = 0x00000000;
+	cz_hwmgr->mgcg_cgtt_local1 = 0x00000000;
+
+	cz_hwmgr->clock_slow_down_freq = 25000;
+
+	cz_hwmgr->skip_clock_slow_down = 1;
+
+	cz_hwmgr->enable_nb_ps_policy = 1; /* disable until UNB is ready, Enabled */
+
+	cz_hwmgr->voltage_drop_in_dce_power_gating = 0; /* disable until fully verified */
+
+	cz_hwmgr->voting_rights_clients = 0x00C00033;
+
+	cz_hwmgr->static_screen_threshold = 8;
+
+	cz_hwmgr->ddi_power_gating_disabled = 0;
+
+	cz_hwmgr->bapm_enabled = 1;
+
+	cz_hwmgr->voltage_drop_threshold = 0;
+
+	cz_hwmgr->gfx_power_gating_threshold = 500;
+
+	cz_hwmgr->vce_slow_sclk_threshold = 20000;
+
+	cz_hwmgr->dce_slow_sclk_threshold = 30000;
+
+	cz_hwmgr->disable_driver_thermal_policy = 1;
+
+	cz_hwmgr->disable_nb_ps3_in_battery = 0;
+
+	phm_cap_unset(hwmgr->platform_descriptor.platformCaps,
+							PHM_PlatformCaps_ABM);
+
+	phm_cap_set(hwmgr->platform_descriptor.platformCaps,
+				    PHM_PlatformCaps_NonABMSupportInPPLib);
+
+	phm_cap_set(hwmgr->platform_descriptor.platformCaps,
+					   PHM_PlatformCaps_SclkDeepSleep);
+
+	phm_cap_unset(hwmgr->platform_descriptor.platformCaps,
+					PHM_PlatformCaps_DynamicM3Arbiter);
+
+	cz_hwmgr->override_dynamic_mgpg = 1;
+
+	phm_cap_set(hwmgr->platform_descriptor.platformCaps,
+				  PHM_PlatformCaps_DynamicPatchPowerState);
+
+	cz_hwmgr->thermal_auto_throttling_treshold = 0;
+
+	cz_hwmgr->tdr_clock = 0;
+
+	cz_hwmgr->disable_gfx_power_gating_in_uvd = 0;
+
+	phm_cap_set(hwmgr->platform_descriptor.platformCaps,
+					PHM_PlatformCaps_DynamicUVDState);
+
+	cz_hwmgr->is_nb_dpm_enabled_by_driver = 1;
+
+	phm_cap_set(hwmgr->platform_descriptor.platformCaps,
+				   PHM_PlatformCaps_DisableVoltageIsland);
+
+	return 0;
+}
+
+static uint32_t cz_convert_8Bit_index_to_voltage(
+			struct pp_hwmgr *hwmgr, uint16_t voltage)
+{
+	return 6200 - (voltage * 25);
+}
+
+static int cz_construct_max_power_limits_table(struct pp_hwmgr *hwmgr,
+			struct phm_clock_and_voltage_limits *table)
+{
+	struct cz_hwmgr *cz_hwmgr = (struct cz_hwmgr *)hwmgr->backend;
+	struct cz_sys_info *sys_info = &cz_hwmgr->sys_info;
+	struct phm_clock_voltage_dependency_table *dep_table =
+				hwmgr->dyn_state.vddc_dependency_on_sclk;
+
+	if (dep_table->count > 0) {
+		table->sclk = dep_table->entries[dep_table->count-1].clk;
+		table->vddc = cz_convert_8Bit_index_to_voltage(hwmgr,
+		   (uint16_t)dep_table->entries[dep_table->count-1].v);
+	}
+	table->mclk = sys_info->nbp_memory_clock[0];
+	return 0;
+}
+
+static int cz_init_dynamic_state_adjustment_rule_settings(
+			struct pp_hwmgr *hwmgr,
+			ATOM_CLK_VOLT_CAPABILITY *disp_voltage_table)
+{
+	uint32_t table_size =
+		sizeof(struct phm_clock_voltage_dependency_table) +
+		(7 * sizeof(struct phm_clock_voltage_dependency_record));
+
+	struct phm_clock_voltage_dependency_table *table_clk_vlt =
+					kzalloc(table_size, GFP_KERNEL);
+
+	if (NULL == table_clk_vlt) {
+		printk(KERN_ERR "[ powerplay ] Can not allocate memory!\n");
+		return -ENOMEM;
+	}
+
+	table_clk_vlt->count = 8;
+	table_clk_vlt->entries[0].clk = PP_DAL_POWERLEVEL_0;
+	table_clk_vlt->entries[0].v = 0;
+	table_clk_vlt->entries[1].clk = PP_DAL_POWERLEVEL_1;
+	table_clk_vlt->entries[1].v = 1;
+	table_clk_vlt->entries[2].clk = PP_DAL_POWERLEVEL_2;
+	table_clk_vlt->entries[2].v = 2;
+	table_clk_vlt->entries[3].clk = PP_DAL_POWERLEVEL_3;
+	table_clk_vlt->entries[3].v = 3;
+	table_clk_vlt->entries[4].clk = PP_DAL_POWERLEVEL_4;
+	table_clk_vlt->entries[4].v = 4;
+	table_clk_vlt->entries[5].clk = PP_DAL_POWERLEVEL_5;
+	table_clk_vlt->entries[5].v = 5;
+	table_clk_vlt->entries[6].clk = PP_DAL_POWERLEVEL_6;
+	table_clk_vlt->entries[6].v = 6;
+	table_clk_vlt->entries[7].clk = PP_DAL_POWERLEVEL_7;
+	table_clk_vlt->entries[7].v = 7;
+	hwmgr->dyn_state.vddc_dep_on_dal_pwrl = table_clk_vlt;
+
+	return 0;
+}
+
+static int cz_get_system_info_data(struct pp_hwmgr *hwmgr)
+{
+	struct cz_hwmgr *cz_hwmgr = (struct cz_hwmgr *)hwmgr->backend;
+	ATOM_INTEGRATED_SYSTEM_INFO_V1_9 *info = NULL;
+	uint32_t i;
+	int result = 0;
+	uint8_t frev, crev;
+	uint16_t size;
+
+	info = (ATOM_INTEGRATED_SYSTEM_INFO_V1_9 *) cgs_atom_get_data_table(
+			hwmgr->device,
+			GetIndexIntoMasterTable(DATA, IntegratedSystemInfo),
+			&size, &frev, &crev);
+
+	if (crev != 9) {
+		printk(KERN_ERR "[ powerplay ] Unsupported IGP table: %d %d\n", frev, crev);
+		return -EINVAL;
+	}
+
+	if (info == NULL) {
+		printk(KERN_ERR "[ powerplay ] Could not retrieve the Integrated System Info Table!\n");
+		return -EINVAL;
+	}
+
+	cz_hwmgr->sys_info.bootup_uma_clock =
+				   le32_to_cpu(info->ulBootUpUMAClock);
+
+	cz_hwmgr->sys_info.bootup_engine_clock =
+				le32_to_cpu(info->ulBootUpEngineClock);
+
+	cz_hwmgr->sys_info.dentist_vco_freq =
+				   le32_to_cpu(info->ulDentistVCOFreq);
+
+	cz_hwmgr->sys_info.system_config =
+				     le32_to_cpu(info->ulSystemConfig);
+
+	cz_hwmgr->sys_info.bootup_nb_voltage_index =
+				  le16_to_cpu(info->usBootUpNBVoltage);
+
+	cz_hwmgr->sys_info.htc_hyst_lmt =
+			(info->ucHtcHystLmt == 0) ? 5 : info->ucHtcHystLmt;
+
+	cz_hwmgr->sys_info.htc_tmp_lmt =
+			(info->ucHtcTmpLmt == 0) ? 203 : info->ucHtcTmpLmt;
+
+	if (cz_hwmgr->sys_info.htc_tmp_lmt <=
+			cz_hwmgr->sys_info.htc_hyst_lmt) {
+		printk(KERN_ERR "[ powerplay ] The htcTmpLmt should be larger than htcHystLmt.\n");
+		return -EINVAL;
+	}
+
+	cz_hwmgr->sys_info.nb_dpm_enable =
+				cz_hwmgr->enable_nb_ps_policy &&
+				(le32_to_cpu(info->ulSystemConfig) >> 3 & 0x1);
+
+	for (i = 0; i < CZ_NUM_NBPSTATES; i++) {
+		if (i < CZ_NUM_NBPMEMORYCLOCK) {
+			cz_hwmgr->sys_info.nbp_memory_clock[i] =
+			  le32_to_cpu(info->ulNbpStateMemclkFreq[i]);
+		}
+		cz_hwmgr->sys_info.nbp_n_clock[i] =
+			    le32_to_cpu(info->ulNbpStateNClkFreq[i]);
+	}
+
+	for (i = 0; i < MAX_DISPLAY_CLOCK_LEVEL; i++) {
+		cz_hwmgr->sys_info.display_clock[i] =
+					le32_to_cpu(info->sDispClkVoltageMapping[i].ulMaximumSupportedCLK);
+	}
+
+	/* Here use 4 levels, make sure not exceed */
+	for (i = 0; i < CZ_NUM_NBPSTATES; i++) {
+		cz_hwmgr->sys_info.nbp_voltage_index[i] =
+			     le16_to_cpu(info->usNBPStateVoltage[i]);
+	}
+
+	if (!cz_hwmgr->sys_info.nb_dpm_enable) {
+		for (i = 1; i < CZ_NUM_NBPSTATES; i++) {
+			if (i < CZ_NUM_NBPMEMORYCLOCK) {
+				cz_hwmgr->sys_info.nbp_memory_clock[i] =
+				    cz_hwmgr->sys_info.nbp_memory_clock[0];
+			}
+			cz_hwmgr->sys_info.nbp_n_clock[i] =
+				    cz_hwmgr->sys_info.nbp_n_clock[0];
+			cz_hwmgr->sys_info.nbp_voltage_index[i] =
+				    cz_hwmgr->sys_info.nbp_voltage_index[0];
+		}
+	}
+
+	if (le32_to_cpu(info->ulGPUCapInfo) &
+		SYS_INFO_GPUCAPS__ENABEL_DFS_BYPASS) {
+		phm_cap_set(hwmgr->platform_descriptor.platformCaps,
+				    PHM_PlatformCaps_EnableDFSBypass);
+	}
+
+	cz_hwmgr->sys_info.uma_channel_number = info->ucUMAChannelNumber;
+
+	cz_construct_max_power_limits_table (hwmgr,
+				    &hwmgr->dyn_state.max_clock_voltage_on_ac);
+
+	cz_init_dynamic_state_adjustment_rule_settings(hwmgr,
+				    &info->sDISPCLK_Voltage[0]);
+
+	return result;
+}
+
+static int cz_construct_boot_state(struct pp_hwmgr *hwmgr)
+{
+	struct cz_hwmgr *cz_hwmgr = (struct cz_hwmgr *)(hwmgr->backend);
+
+	cz_hwmgr->boot_power_level.engineClock =
+				cz_hwmgr->sys_info.bootup_engine_clock;
+
+	cz_hwmgr->boot_power_level.vddcIndex =
+			(uint8_t)cz_hwmgr->sys_info.bootup_nb_voltage_index;
+
+	cz_hwmgr->boot_power_level.dsDividerIndex = 0;
+
+	cz_hwmgr->boot_power_level.ssDividerIndex = 0;
+
+	cz_hwmgr->boot_power_level.allowGnbSlow = 1;
+
+	cz_hwmgr->boot_power_level.forceNBPstate = 0;
+
+	cz_hwmgr->boot_power_level.hysteresis_up = 0;
+
+	cz_hwmgr->boot_power_level.numSIMDToPowerDown = 0;
+
+	cz_hwmgr->boot_power_level.display_wm = 0;
+
+	cz_hwmgr->boot_power_level.vce_wm = 0;
+
+	return 0;
+}
+
+static int cz_tf_reset_active_process_mask(struct pp_hwmgr *hwmgr, void *input,
+					void *output, void *storage, int result)
+{
+	return 0;
+}
+
+static int cz_tf_upload_pptable_to_smu(struct pp_hwmgr *hwmgr, void *input,
+					void *output, void *storage, int result)
+{
+	return 0;
+}
+
+static int cz_tf_init_sclk_limit(struct pp_hwmgr *hwmgr, void *input,
+				 void *output, void *storage, int result)
+{
+	struct cz_hwmgr *cz_hwmgr = (struct cz_hwmgr *)(hwmgr->backend);
+	struct phm_clock_voltage_dependency_table *table =
+					hwmgr->dyn_state.vddc_dependency_on_sclk;
+	unsigned long clock = 0, level;
+
+	if (NULL == table && table->count <= 0)
+		return -EINVAL;
+
+	cz_hwmgr->sclk_dpm.soft_min_clk = table->entries[0].clk;
+	cz_hwmgr->sclk_dpm.hard_min_clk = table->entries[0].clk;
+
+	level = cz_get_max_sclk_level(hwmgr) - 1;
+
+	if (level < table->count)
+		clock = table->entries[level].clk;
+	else
+		clock = table->entries[table->count - 1].clk;
+
+	cz_hwmgr->sclk_dpm.soft_max_clk = clock;
+	cz_hwmgr->sclk_dpm.hard_max_clk = clock;
+
+	return 0;
+}
+
+static int cz_tf_init_uvd_limit(struct pp_hwmgr *hwmgr, void *input,
+				void *output, void *storage, int result)
+{
+	struct cz_hwmgr *cz_hwmgr = (struct cz_hwmgr *)(hwmgr->backend);
+	struct phm_uvd_clock_voltage_dependency_table *table =
+				hwmgr->dyn_state.uvd_clocl_voltage_dependency_table;
+	unsigned long clock = 0, level;
+
+	if (NULL == table && table->count <= 0)
+		return -EINVAL;
+
+	cz_hwmgr->uvd_dpm.soft_min_clk = 0;
+	cz_hwmgr->uvd_dpm.hard_min_clk = 0;
+
+	smum_send_msg_to_smc(hwmgr->smumgr, PPSMC_MSG_GetMaxUvdLevel);
+	level = smum_get_argument(hwmgr->smumgr);
+
+	if (level < table->count)
+		clock = table->entries[level].vclk;
+	else
+		clock = table->entries[table->count - 1].vclk;
+
+	cz_hwmgr->uvd_dpm.soft_max_clk = clock;
+	cz_hwmgr->uvd_dpm.hard_max_clk = clock;
+
+	return 0;
+}
+
+static int cz_tf_init_vce_limit(struct pp_hwmgr *hwmgr, void *input,
+				void *output, void *storage, int result)
+{
+	struct cz_hwmgr *cz_hwmgr = (struct cz_hwmgr *)(hwmgr->backend);
+	struct phm_vce_clock_voltage_dependency_table *table =
+				hwmgr->dyn_state.vce_clocl_voltage_dependency_table;
+	unsigned long clock = 0, level;
+
+	if (NULL == table && table->count <= 0)
+		return -EINVAL;
+
+	cz_hwmgr->vce_dpm.soft_min_clk = 0;
+	cz_hwmgr->vce_dpm.hard_min_clk = 0;
+
+	smum_send_msg_to_smc(hwmgr->smumgr, PPSMC_MSG_GetMaxEclkLevel);
+	level = smum_get_argument(hwmgr->smumgr);
+
+	if (level < table->count)
+		clock = table->entries[level].ecclk;
+	else
+		clock = table->entries[table->count - 1].ecclk;
+
+	cz_hwmgr->vce_dpm.soft_max_clk = clock;
+	cz_hwmgr->vce_dpm.hard_max_clk = clock;
+
+	return 0;
+}
+
+static int cz_tf_init_acp_limit(struct pp_hwmgr *hwmgr, void *input,
+				void *output, void *storage, int result)
+{
+	struct cz_hwmgr *cz_hwmgr = (struct cz_hwmgr *)(hwmgr->backend);
+	struct phm_acp_clock_voltage_dependency_table *table =
+				hwmgr->dyn_state.acp_clock_voltage_dependency_table;
+	unsigned long clock = 0, level;
+
+	if (NULL == table && table->count <= 0)
+		return -EINVAL;
+
+	cz_hwmgr->acp_dpm.soft_min_clk = 0;
+	cz_hwmgr->acp_dpm.hard_min_clk = 0;
+
+	smum_send_msg_to_smc(hwmgr->smumgr, PPSMC_MSG_GetMaxAclkLevel);
+	level = smum_get_argument(hwmgr->smumgr);
+
+	if (level < table->count)
+		clock = table->entries[level].acpclk;
+	else
+		clock = table->entries[table->count - 1].acpclk;
+
+	cz_hwmgr->acp_dpm.soft_max_clk = clock;
+	cz_hwmgr->acp_dpm.hard_max_clk = clock;
+	return 0;
+}
+
+static int cz_tf_init_power_gate_state(struct pp_hwmgr *hwmgr, void *input,
+				void *output, void *storage, int result)
+{
+	struct cz_hwmgr *cz_hwmgr = (struct cz_hwmgr *)(hwmgr->backend);
+
+	cz_hwmgr->uvd_power_gated = false;
+	cz_hwmgr->vce_power_gated = false;
+	cz_hwmgr->samu_power_gated = false;
+	cz_hwmgr->acp_power_gated = false;
+	cz_hwmgr->pgacpinit = true;
+
+	return 0;
+}
+
+static int cz_tf_init_sclk_threshold(struct pp_hwmgr *hwmgr, void *input,
+				void *output, void *storage, int result)
+{
+	struct cz_hwmgr *cz_hwmgr = (struct cz_hwmgr *)(hwmgr->backend);
+
+	cz_hwmgr->low_sclk_interrupt_threshold = 0;
+
+	return 0;
+}
+
+static struct phm_master_table_item cz_setup_asic_list[] = {
+	{NULL, cz_tf_reset_active_process_mask},
+	{NULL, cz_tf_upload_pptable_to_smu},
+	{NULL, cz_tf_init_sclk_limit},
+	{NULL, cz_tf_init_uvd_limit},
+	{NULL, cz_tf_init_vce_limit},
+	{NULL, cz_tf_init_acp_limit},
+	{NULL, cz_tf_init_power_gate_state},
+	{NULL, cz_tf_init_sclk_threshold},
+	{NULL, NULL}
+};
+
+static struct phm_master_table_header cz_setup_asic_master = {
+	0,
+	PHM_MasterTableFlag_None,
+	cz_setup_asic_list
+};
+
+static int cz_tf_program_voting_clients(struct pp_hwmgr *hwmgr, void *input,
+				void *output, void *storage, int result)
+{
+	PHMCZ_WRITE_SMC_REGISTER(hwmgr->device, CG_FREQ_TRAN_VOTING_0,
+				PPCZ_VOTINGRIGHTSCLIENTS_DFLT0);
+	return 0;
+}
+
+static int cz_tf_start_dpm(struct pp_hwmgr *hwmgr, void *input, void *output,
+			   void *storage, int result)
+{
+	int res = 0xff;
+	struct cz_hwmgr *cz_hwmgr = (struct cz_hwmgr *)(hwmgr->backend);
+	unsigned long dpm_features = 0;
+
+	cz_hwmgr->dpm_flags |= DPMFlags_SCLK_Enabled;
+	dpm_features |= SCLK_DPM_MASK;
+
+	res = smum_send_msg_to_smc_with_parameter(hwmgr->smumgr,
+				PPSMC_MSG_EnableAllSmuFeatures,
+				dpm_features);
+
+	return res;
+}
+
+static int cz_tf_program_bootup_state(struct pp_hwmgr *hwmgr, void *input,
+				void *output, void *storage, int result)
+{
+	struct cz_hwmgr *cz_hwmgr = (struct cz_hwmgr *)(hwmgr->backend);
+
+	cz_hwmgr->sclk_dpm.soft_min_clk = cz_hwmgr->sys_info.bootup_engine_clock;
+	cz_hwmgr->sclk_dpm.soft_max_clk = cz_hwmgr->sys_info.bootup_engine_clock;
+
+	smum_send_msg_to_smc_with_parameter(hwmgr->smumgr,
+				PPSMC_MSG_SetSclkSoftMin,
+				cz_get_sclk_level(hwmgr,
+				cz_hwmgr->sclk_dpm.soft_min_clk,
+				PPSMC_MSG_SetSclkSoftMin));
+
+	smum_send_msg_to_smc_with_parameter(hwmgr->smumgr,
+				PPSMC_MSG_SetSclkSoftMax,
+				cz_get_sclk_level(hwmgr,
+				cz_hwmgr->sclk_dpm.soft_max_clk,
+				PPSMC_MSG_SetSclkSoftMax));
+
+	return 0;
+}
+
+int cz_tf_reset_acp_boot_level(struct pp_hwmgr *hwmgr, void *input,
+				void *output, void *storage, int result)
+{
+	struct cz_hwmgr *cz_hwmgr = (struct cz_hwmgr *)(hwmgr->backend);
+
+	cz_hwmgr->acp_boot_level = 0xff;
+	return 0;
+}
+
+static bool cz_dpm_check_smu_features(struct pp_hwmgr *hwmgr,
+				unsigned long check_feature)
+{
+	int result;
+	unsigned long features;
+
+	result = smum_send_msg_to_smc_with_parameter(hwmgr->smumgr, PPSMC_MSG_GetFeatureStatus, 0);
+	if (result == 0) {
+		features = smum_get_argument(hwmgr->smumgr);
+		if (features & check_feature)
+			return true;
+	}
+
+	return result;
+}
+
+static int cz_tf_check_for_dpm_disabled(struct pp_hwmgr *hwmgr, void *input,
+				void *output, void *storage, int result)
+{
+	if (cz_dpm_check_smu_features(hwmgr, SMU_EnabledFeatureScoreboard_SclkDpmOn))
+		return PP_Result_TableImmediateExit;
+	return 0;
+}
+
+static int cz_tf_enable_didt(struct pp_hwmgr *hwmgr, void *input,
+				void *output, void *storage, int result)
+{
+	/* TO DO */
+	return 0;
+}
+
+static int cz_tf_check_for_dpm_enabled(struct pp_hwmgr *hwmgr,
+						void *input, void *output,
+						void *storage, int result)
+{
+	if (!cz_dpm_check_smu_features(hwmgr,
+			     SMU_EnabledFeatureScoreboard_SclkDpmOn))
+		return PP_Result_TableImmediateExit;
+	return 0;
+}
+
+static struct phm_master_table_item cz_disable_dpm_list[] = {
+	{ NULL, cz_tf_check_for_dpm_enabled},
+	{NULL, NULL},
+};
+
+
+static struct phm_master_table_header cz_disable_dpm_master = {
+	0,
+	PHM_MasterTableFlag_None,
+	cz_disable_dpm_list
+};
+
+static struct phm_master_table_item cz_enable_dpm_list[] = {
+	{ NULL, cz_tf_check_for_dpm_disabled },
+	{ NULL, cz_tf_program_voting_clients },
+	{ NULL, cz_tf_start_dpm},
+	{ NULL, cz_tf_program_bootup_state},
+	{ NULL, cz_tf_enable_didt },
+	{ NULL, cz_tf_reset_acp_boot_level },
+	{NULL, NULL},
+};
+
+static struct phm_master_table_header cz_enable_dpm_master = {
+	0,
+	PHM_MasterTableFlag_None,
+	cz_enable_dpm_list
+};
+
+static int cz_hwmgr_backend_init(struct pp_hwmgr *hwmgr)
+{
+	int result = 0;
+
+	result = cz_initialize_dpm_defaults(hwmgr);
+	if (result != 0) {
+		printk(KERN_ERR "[ powerplay ] cz_initialize_dpm_defaults failed\n");
+		return result;
+	}
+
+	result = cz_get_system_info_data(hwmgr);
+	if (result != 0) {
+		printk(KERN_ERR "[ powerplay ] cz_get_system_info_data failed\n");
+		return result;
+	}
+
+	cz_construct_boot_state(hwmgr);
+
+	result = phm_construct_table(hwmgr, &cz_setup_asic_master,
+				&(hwmgr->setup_asic));
+	if (result != 0) {
+		printk(KERN_ERR "[ powerplay ] Fail to construct setup ASIC\n");
+		return result;
+	}
+
+	result = phm_construct_table(hwmgr, &cz_disable_dpm_master,
+				&(hwmgr->disable_dynamic_state_management));
+
+	result = phm_construct_table(hwmgr, &cz_enable_dpm_master,
+				&(hwmgr->enable_dynamic_state_management));
+
+	return result;
+}
+
+static int cz_hwmgr_backend_fini(struct pp_hwmgr *hwmgr)
+{
+	if (hwmgr != NULL || hwmgr->backend != NULL) {
+		kfree(hwmgr->backend);
+		kfree(hwmgr);
+	}
+	return 0;
+}
+
+int cz_phm_force_dpm_highest(struct pp_hwmgr *hwmgr)
+{
+	struct cz_hwmgr *cz_hwmgr = (struct cz_hwmgr *)(hwmgr->backend);
+
+	if (cz_hwmgr->sclk_dpm.soft_min_clk !=
+				cz_hwmgr->sclk_dpm.soft_max_clk)
+		smum_send_msg_to_smc_with_parameter(hwmgr->smumgr,
+						PPSMC_MSG_SetSclkSoftMin,
+						cz_get_sclk_level(hwmgr,
+						cz_hwmgr->sclk_dpm.soft_max_clk,
+						PPSMC_MSG_SetSclkSoftMin));
+	return 0;
+}
+
+int cz_phm_unforce_dpm_levels(struct pp_hwmgr *hwmgr)
+{
+	struct cz_hwmgr *cz_hwmgr = (struct cz_hwmgr *)(hwmgr->backend);
+	struct phm_clock_voltage_dependency_table *table =
+				hwmgr->dyn_state.vddc_dependency_on_sclk;
+	unsigned long clock = 0, level;
+
+	if (NULL == table && table->count <= 0)
+		return -EINVAL;
+
+	cz_hwmgr->sclk_dpm.soft_min_clk = table->entries[0].clk;
+	cz_hwmgr->sclk_dpm.hard_min_clk = table->entries[0].clk;
+
+	level = cz_get_max_sclk_level(hwmgr) - 1;
+
+	if (level < table->count)
+		clock = table->entries[level].clk;
+	else
+		clock = table->entries[table->count - 1].clk;
+
+	cz_hwmgr->sclk_dpm.soft_max_clk = clock;
+	cz_hwmgr->sclk_dpm.hard_max_clk = clock;
+
+	smum_send_msg_to_smc_with_parameter(hwmgr->smumgr,
+				PPSMC_MSG_SetSclkSoftMin,
+				cz_get_sclk_level(hwmgr,
+				cz_hwmgr->sclk_dpm.soft_min_clk,
+				PPSMC_MSG_SetSclkSoftMin));
+
+	smum_send_msg_to_smc_with_parameter(hwmgr->smumgr,
+				PPSMC_MSG_SetSclkSoftMax,
+				cz_get_sclk_level(hwmgr,
+				cz_hwmgr->sclk_dpm.soft_max_clk,
+				PPSMC_MSG_SetSclkSoftMax));
+
+	return 0;
+}
+
+int cz_phm_force_dpm_lowest(struct pp_hwmgr *hwmgr)
+{
+	struct cz_hwmgr *cz_hwmgr = (struct cz_hwmgr *)(hwmgr->backend);
+
+	if (cz_hwmgr->sclk_dpm.soft_min_clk !=
+				cz_hwmgr->sclk_dpm.soft_max_clk) {
+		cz_hwmgr->sclk_dpm.soft_max_clk =
+			cz_hwmgr->sclk_dpm.soft_min_clk;
+
+		smum_send_msg_to_smc_with_parameter(hwmgr->smumgr,
+				PPSMC_MSG_SetSclkSoftMax,
+				cz_get_sclk_level(hwmgr,
+				cz_hwmgr->sclk_dpm.soft_max_clk,
+				PPSMC_MSG_SetSclkSoftMax));
+	}
+
+	return 0;
+}
+
+static int cz_dpm_force_dpm_level(struct pp_hwmgr *hwmgr,
+				enum amd_dpm_forced_level level)
+{
+	int ret = 0;
+
+	switch (level) {
+	case AMD_DPM_FORCED_LEVEL_HIGH:
+		ret = cz_phm_force_dpm_highest(hwmgr);
+		if (ret)
+			return ret;
+		break;
+	case AMD_DPM_FORCED_LEVEL_LOW:
+		ret = cz_phm_force_dpm_lowest(hwmgr);
+		if (ret)
+			return ret;
+		break;
+	case AMD_DPM_FORCED_LEVEL_AUTO:
+		ret = cz_phm_unforce_dpm_levels(hwmgr);
+		if (ret)
+			return ret;
+		break;
+	default:
+		break;
+	}
+
+	hwmgr->dpm_level = level;
+
+	return ret;
+}
+
+static int cz_dpm_patch_boot_state(struct pp_hwmgr *hwmgr,
+					struct pp_hw_power_state *hw_ps)
+{
+	struct cz_hwmgr *cz_hwmgr = (struct cz_hwmgr *)(hwmgr->backend);
+	struct cz_power_state *cz_ps = cast_PhwCzPowerState(hw_ps);
+
+	cz_ps->level = 1;
+	cz_ps->nbps_flags = 0;
+	cz_ps->bapm_flags = 0;
+	cz_ps->levels[0] = cz_hwmgr->boot_power_level;
+
+	return 0;
+}
+
+static int cz_dpm_get_pp_table_entry_callback(
+						     struct pp_hwmgr *hwmgr,
+					   struct pp_hw_power_state *hw_ps,
+							  unsigned int index,
+						     const void *clock_info)
+{
+	struct cz_power_state *cz_ps = cast_PhwCzPowerState(hw_ps);
+
+	const ATOM_PPLIB_CZ_CLOCK_INFO *cz_clock_info = clock_info;
+
+	struct phm_clock_voltage_dependency_table *table =
+				    hwmgr->dyn_state.vddc_dependency_on_sclk;
+	uint8_t clock_info_index = cz_clock_info->index;
+
+	if (clock_info_index > (uint8_t)(hwmgr->platform_descriptor.hardwareActivityPerformanceLevels - 1))
+		clock_info_index = (uint8_t)(hwmgr->platform_descriptor.hardwareActivityPerformanceLevels - 1);
+
+	cz_ps->levels[index].engineClock = table->entries[clock_info_index].clk;
+	cz_ps->levels[index].vddcIndex = (uint8_t)table->entries[clock_info_index].v;
+
+	cz_ps->level = index + 1;
+
+	if (phm_cap_enabled(hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_SclkDeepSleep)) {
+		cz_ps->levels[index].dsDividerIndex = 5;
+		cz_ps->levels[index].ssDividerIndex = 5;
+	}
+
+	return 0;
+}
+
+static int cz_dpm_get_num_of_pp_table_entries(struct pp_hwmgr *hwmgr)
+{
+	int result;
+	unsigned long ret = 0;
+
+	result = pp_tables_get_num_of_entries(hwmgr, &ret);
+
+	return result ? 0 : ret;
+}
+
+static int cz_dpm_get_pp_table_entry(struct pp_hwmgr *hwmgr,
+		    unsigned long entry, struct pp_power_state *ps)
+{
+	int result;
+	struct cz_power_state *cz_ps;
+
+	ps->hardware.magic = PhwCz_Magic;
+
+	cz_ps = cast_PhwCzPowerState(&(ps->hardware));
+
+	result = pp_tables_get_entry(hwmgr, entry, ps,
+			cz_dpm_get_pp_table_entry_callback);
+
+	cz_ps->uvd_clocks.vclk = ps->uvd_clocks.VCLK;
+	cz_ps->uvd_clocks.dclk = ps->uvd_clocks.DCLK;
+
+	return result;
+}
+
+int cz_get_power_state_size(struct pp_hwmgr *hwmgr)
+{
+	return sizeof(struct cz_power_state);
+}
+
+static const struct pp_hwmgr_func cz_hwmgr_funcs = {
+	.backend_init = cz_hwmgr_backend_init,
+	.backend_fini = cz_hwmgr_backend_fini,
+	.asic_setup = NULL,
+	.force_dpm_level = cz_dpm_force_dpm_level,
+	.get_power_state_size = cz_get_power_state_size,
+	.patch_boot_state = cz_dpm_patch_boot_state,
+	.get_pp_table_entry = cz_dpm_get_pp_table_entry,
+	.get_num_of_pp_table_entries = cz_dpm_get_num_of_pp_table_entries,
+};
+
+int cz_hwmgr_init(struct pp_hwmgr *hwmgr)
+{
+	struct cz_hwmgr *cz_hwmgr;
+	int ret = 0;
+
+	cz_hwmgr = kzalloc(sizeof(struct cz_hwmgr), GFP_KERNEL);
+	if (cz_hwmgr == NULL)
+		return -ENOMEM;
+
+	hwmgr->backend = cz_hwmgr;
+	hwmgr->hwmgr_func = &cz_hwmgr_funcs;
+	hwmgr->pptable_func = &pptable_funcs;
+	return ret;
+}

drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.h

+/*
+ * Copyright 2015 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.
+ *
+ */
+
+#ifndef _CZ_HWMGR_H_
+#define _CZ_HWMGR_H_
+
+#include "cgs_common.h"
+
+#define CZ_NUM_NBPSTATES               4
+#define CZ_NUM_NBPMEMORYCLOCK          2
+#define MAX_DISPLAY_CLOCK_LEVEL        8
+#define CZ_AT_DFLT                     30
+#define CZ_MAX_HARDWARE_POWERLEVELS    8
+#define PPCZ_VOTINGRIGHTSCLIENTS_DFLT0   0x3FFFC102
+
+/* Carrizo device IDs */
+#define DEVICE_ID_CZ_9870             0x9870
+#define DEVICE_ID_CZ_9874             0x9874
+#define DEVICE_ID_CZ_9875             0x9875
+#define DEVICE_ID_CZ_9876             0x9876
+#define DEVICE_ID_CZ_9877             0x9877
+
+#define PHMCZ_WRITE_SMC_REGISTER(device, reg, value)                            \
+		cgs_write_ind_register(device, CGS_IND_REG__SMC, ix##reg, value)
+
+struct cz_dpm_entry {
+	uint32_t soft_min_clk;
+	uint32_t hard_min_clk;
+	uint32_t soft_max_clk;
+	uint32_t hard_max_clk;
+};
+
+struct cz_sys_info {
+	uint32_t bootup_uma_clock;
+	uint32_t bootup_engine_clock;
+	uint32_t dentist_vco_freq;
+	uint32_t nb_dpm_enable;
+	uint32_t nbp_memory_clock[CZ_NUM_NBPMEMORYCLOCK];
+	uint32_t nbp_n_clock[CZ_NUM_NBPSTATES];
+	uint16_t nbp_voltage_index[CZ_NUM_NBPSTATES];
+	uint32_t display_clock[MAX_DISPLAY_CLOCK_LEVEL];
+	uint16_t bootup_nb_voltage_index;
+	uint8_t htc_tmp_lmt;
+	uint8_t htc_hyst_lmt;
+	uint32_t system_config;
+	uint32_t uma_channel_number;
+};
+
+#define MAX_DISPLAYPHY_IDS			0x8
+#define DISPLAYPHY_LANEMASK			0xF
+#define UNKNOWN_TRANSMITTER_PHY_ID		(-1)
+
+#define DISPLAYPHY_PHYID_SHIFT			24
+#define DISPLAYPHY_LANESELECT_SHIFT		16
+
+#define DISPLAYPHY_RX_SELECT			0x1
+#define DISPLAYPHY_TX_SELECT			0x2
+#define DISPLAYPHY_CORE_SELECT			0x4
+
+#define DDI_POWERGATING_ARG(phyID, lanemask, rx, tx, core) \
+		(((uint32_t)(phyID))<<DISPLAYPHY_PHYID_SHIFT | \
+		((uint32_t)(lanemask))<<DISPLAYPHY_LANESELECT_SHIFT | \
+		((rx) ? DISPLAYPHY_RX_SELECT : 0) | \
+		((tx) ? DISPLAYPHY_TX_SELECT : 0) | \
+		((core) ? DISPLAYPHY_CORE_SELECT : 0))
+
+struct cz_display_phy_info_entry {
+	uint8_t phy_present;
+	uint8_t active_lane_mapping;
+	uint8_t display_config_type;
+	uint8_t active_number_of_lanes;
+};
+
+#define CZ_MAX_DISPLAYPHY_IDS			10
+
+struct cz_display_phy_info {
+	bool display_phy_access_initialized;
+	struct cz_display_phy_info_entry entries[CZ_MAX_DISPLAYPHY_IDS];
+};
+
+struct cz_power_level {
+	uint32_t engineClock;
+	uint8_t vddcIndex;
+	uint8_t dsDividerIndex;
+	uint8_t ssDividerIndex;
+	uint8_t allowGnbSlow;
+	uint8_t forceNBPstate;
+	uint8_t display_wm;
+	uint8_t vce_wm;
+	uint8_t numSIMDToPowerDown;
+	uint8_t hysteresis_up;
+	uint8_t rsv[3];
+};
+
+struct cz_uvd_clocks {
+	uint32_t vclk;
+	uint32_t dclk;
+	uint32_t vclk_low_divider;
+	uint32_t vclk_high_divider;
+	uint32_t dclk_low_divider;
+	uint32_t dclk_high_divider;
+};
+
+enum cz_pstate_previous_action {
+	DO_NOTHING = 1,
+	FORCE_HIGH,
+	CANCEL_FORCE_HIGH
+};
+
+struct pp_disable_nb_ps_flags {
+	union {
+		struct {
+			uint32_t entry : 1;
+			uint32_t display : 1;
+			uint32_t driver: 1;
+			uint32_t vce : 1;
+			uint32_t uvd : 1;
+			uint32_t acp : 1;
+			uint32_t reserved: 26;
+		} bits;
+		uint32_t u32All;
+	};
+};
+
+struct cz_power_state {
+	unsigned int magic;
+	uint32_t level;
+	struct cz_uvd_clocks uvd_clocks;
+	uint32_t evclk;
+	uint32_t ecclk;
+	uint32_t samclk;
+	uint32_t acpclk;
+	bool need_dfs_bypass;
+	uint32_t nbps_flags;
+	uint32_t bapm_flags;
+	uint8_t dpm_0_pg_nb_ps_low;
+	uint8_t dpm_0_pg_nb_ps_high;
+	uint8_t dpm_x_nb_ps_low;
+	uint8_t dpm_x_nb_ps_high;
+	enum cz_pstate_previous_action action;
+	struct cz_power_level levels[CZ_MAX_HARDWARE_POWERLEVELS];
+	struct pp_disable_nb_ps_flags disable_nb_ps_flag;
+};
+
+#define DPMFlags_SCLK_Enabled			0x00000001
+#define DPMFlags_UVD_Enabled			0x00000002
+#define DPMFlags_VCE_Enabled			0x00000004
+#define DPMFlags_ACP_Enabled			0x00000008
+#define DPMFlags_ForceHighestValid		0x40000000
+#define DPMFlags_Debug				0x80000000
+
+#define SMU_EnabledFeatureScoreboard_AcpDpmOn   0x00000001 /* bit 0 */
+#define SMU_EnabledFeatureScoreboard_SclkDpmOn    0x00200000
+#define SMU_EnabledFeatureScoreboard_UvdDpmOn   0x00800000 /* bit 23 */
+#define SMU_EnabledFeatureScoreboard_VceDpmOn   0x01000000 /* bit 24 */
+
+struct cz_hwmgr {
+	uint32_t activity_target[CZ_MAX_HARDWARE_POWERLEVELS];
+	uint32_t dpm_interval;
+
+	uint32_t voltage_drop_threshold;
+
+	uint32_t voting_rights_clients;
+
+	uint32_t disable_driver_thermal_policy;
+
+	uint32_t static_screen_threshold;
+
+	uint32_t gfx_power_gating_threshold;
+
+	uint32_t activity_hysteresis;
+	uint32_t bootup_sclk_divider;
+	uint32_t gfx_ramp_step;
+	uint32_t gfx_ramp_delay; /* in micro-seconds */
+
+	uint32_t thermal_auto_throttling_treshold;
+
+	struct cz_sys_info sys_info;
+
+	struct cz_power_level boot_power_level;
+	uint32_t mgcg_cgtt_local0;
+	uint32_t mgcg_cgtt_local1;
+
+	uint32_t tdr_clock; /* in 10khz unit */
+
+	uint32_t ddi_power_gating_disabled;
+	uint32_t disable_gfx_power_gating_in_uvd;
+	uint32_t disable_nb_ps3_in_battery;
+
+	uint32_t lock_nb_ps_in_uvd_play_back;
+
+	struct cz_display_phy_info display_phy_info;
+	uint32_t vce_slow_sclk_threshold; /* default 200mhz */
+	uint32_t dce_slow_sclk_threshold; /* default 300mhz */
+	uint32_t min_sclk_did;  /* minimum sclk divider */
+
+	bool disp_clk_bypass;
+	bool disp_clk_bypass_pending;
+	uint32_t bapm_enabled;
+	uint32_t clock_slow_down_freq;
+	uint32_t skip_clock_slow_down;
+	uint32_t enable_nb_ps_policy;
+	uint32_t voltage_drop_in_dce_power_gating;
+	uint32_t uvd_dpm_interval;
+	uint32_t override_dynamic_mgpg;
+	uint32_t lclk_deep_enabled;
+
+	uint32_t uvd_performance;
+
+	bool video_start;
+	bool battery_state;
+	uint32_t lowest_valid;
+	uint32_t highest_valid;
+	uint32_t high_voltage_threshold;
+	uint32_t is_nb_dpm_enabled;
+	uint32_t is_nb_dpm_enabled_by_driver;
+	uint32_t is_voltage_island_enabled;
+
+	bool pgacpinit;
+
+	uint8_t disp_config;
+
+	/* PowerTune */
+	uint32_t power_containment_features;
+	bool cac_enabled;
+	bool disable_uvd_power_tune_feature;
+	bool enable_ba_pm_feature;
+	bool enable_tdc_limit_feature;
+
+	uint32_t sram_end;
+	uint32_t dpm_table_start;
+	uint32_t soft_regs_start;
+
+	uint8_t uvd_level_count;
+	uint8_t vce_level_count;
+
+	uint8_t acp_level_count;
+	uint8_t samu_level_count;
+	uint32_t fps_high_threshold;
+	uint32_t fps_low_threshold;
+
+	uint32_t dpm_flags;
+	struct cz_dpm_entry sclk_dpm;
+	struct cz_dpm_entry uvd_dpm;
+	struct cz_dpm_entry vce_dpm;
+	struct cz_dpm_entry acp_dpm;
+
+	uint8_t uvd_boot_level;
+	uint8_t vce_boot_level;
+	uint8_t acp_boot_level;
+	uint8_t samu_boot_level;
+	uint8_t uvd_interval;
+	uint8_t vce_interval;
+	uint8_t acp_interval;
+	uint8_t samu_interval;
+
+	uint8_t graphics_interval;
+	uint8_t graphics_therm_throttle_enable;
+	uint8_t graphics_voltage_change_enable;
+
+	uint8_t graphics_clk_slow_enable;
+	uint8_t graphics_clk_slow_divider;
+
+	uint32_t display_cac;
+	uint32_t low_sclk_interrupt_threshold;
+
+	uint32_t dram_log_addr_h;
+	uint32_t dram_log_addr_l;
+	uint32_t dram_log_phy_addr_h;
+	uint32_t dram_log_phy_addr_l;
+	uint32_t dram_log_buff_size;
+
+	bool uvd_power_gated;
+	bool vce_power_gated;
+	bool samu_power_gated;
+	bool acp_power_gated;
+	bool acp_power_up_no_dsp;
+	uint32_t active_process_mask;
+
+	uint32_t max_sclk_level;
+	uint32_t num_of_clk_entries;
+	struct cz_power_state *cz_ps;
+};
+
+struct pp_hwmgr;
+
+int cz_hwmgr_init(struct pp_hwmgr *hwmgr);
+
+#endif /* _CZ_HWMGR_H_ */

drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c

@@ -27,8 +27,7 @@
 #include "cgs_common.h"
 #include "power_state.h"
 #include "hwmgr.h"
-
-
+#include "cz_hwmgr.h"
 
 int hwmgr_init(struct amd_pp_init *pp_init, struct pp_instance *handle)
 {
@@ -51,6 +50,9 @@ int hwmgr_init(struct amd_pp_init *pp_init, struct pp_instance *handle)
 	hwmgr->power_source = PP_PowerSource_AC;
 
 	switch (hwmgr->chip_family) {
+	case AMD_FAMILY_CZ:
+		cz_hwmgr_init(hwmgr);
+		break;
 	default:
 		return -EINVAL;
 	}