drm/amd/powerplay: Add floor DCEF for DS on boot.

Use the vbios to look up the default frequencies
for socclk and dcefclk.

Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -388,11 +388,33 @@ int pp_atomfwctrl_get_gpio_information(struct pp_hwmgr *hwmgr,
 	return 0;
 }
 
+int pp_atomfwctrl__get_clk_information_by_clkid(struct pp_hwmgr *hwmgr, BIOS_CLKID id, uint32_t *frequency)
+{
+	struct atom_get_smu_clock_info_parameters_v3_1   parameters;
+	struct atom_get_smu_clock_info_output_parameters_v3_1 *output;
+	uint32_t ix;
+
+	parameters.clk_id = id;
+	parameters.command = GET_SMU_CLOCK_INFO_V3_1_GET_CLOCK_FREQ;
+
+	ix = GetIndexIntoMasterCmdTable(getsmuclockinfo);
+	if (!cgs_atom_exec_cmd_table(hwmgr->device, ix, &parameters)) {
+		output = (struct atom_get_smu_clock_info_output_parameters_v3_1 *)&parameters;
+		*frequency = output->atom_smu_outputclkfreq.smu_clock_freq_hz / 10000;
+	} else {
+		pr_info("Error execute_table getsmuclockinfo!");
+		return -1;
+	}
+
+	return 0;
+}
+
 int pp_atomfwctrl_get_vbios_bootup_values(struct pp_hwmgr *hwmgr,
 			struct pp_atomfwctrl_bios_boot_up_values *boot_values)
 {
 	struct atom_firmware_info_v3_1 *info = NULL;
 	uint16_t ix;
+	uint32_t frequency = 0;
 
 	ix = GetIndexIntoMasterDataTable(firmwareinfo);
 	info = (struct atom_firmware_info_v3_1 *)
@@ -407,11 +429,18 @@ int pp_atomfwctrl_get_vbios_bootup_values(struct pp_hwmgr *hwmgr,
 	boot_values->ulRevision = info->firmware_revision;
 	boot_values->ulGfxClk   = info->bootup_sclk_in10khz;
 	boot_values->ulUClk     = info->bootup_mclk_in10khz;
-	boot_values->ulSocClk   = 0;
 	boot_values->usVddc     = info->bootup_vddc_mv;
 	boot_values->usVddci    = info->bootup_vddci_mv;
 	boot_values->usMvddc    = info->bootup_mvddc_mv;
 	boot_values->usVddGfx   = info->bootup_vddgfx_mv;
+	boot_values->ulSocClk   = 0;
+	boot_values->ulDCEFClk   = 0;
+
+	if (!pp_atomfwctrl__get_clk_information_by_clkid(hwmgr, SMU9_SYSPLL0_SOCCLK_ID, &frequency))
+		boot_values->ulSocClk   = frequency;
+
+	if (!pp_atomfwctrl__get_clk_information_by_clkid(hwmgr, SMU9_SYSPLL0_DCEFCLK_ID, &frequency))
+		boot_values->ulDCEFClk   = frequency;
 
 	return 0;
 }

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

@@ -26,6 +26,8 @@
 
 #include "hwmgr.h"
 
+typedef enum atom_smu9_syspll0_clock_id BIOS_CLKID;
+
 #define GetIndexIntoMasterCmdTable(FieldName) \
 	(((char*)(&((struct atom_master_list_of_command_functions_v2_1*)0)->FieldName)-(char*)0)/sizeof(uint16_t))
 #define GetIndexIntoMasterDataTable(FieldName) \
@@ -125,6 +127,7 @@ struct pp_atomfwctrl_bios_boot_up_values {
 	uint32_t   ulGfxClk;
 	uint32_t   ulUClk;
 	uint32_t   ulSocClk;
+	uint32_t   ulDCEFClk;
 	uint16_t   usVddc;
 	uint16_t   usVddci;
 	uint16_t   usMvddc;

drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c

@@ -2451,6 +2451,7 @@ static int vega10_init_smc_table(struct pp_hwmgr *hwmgr)
 		data->vbios_boot_state.gfx_clock = boot_up_values.ulGfxClk;
 		data->vbios_boot_state.mem_clock = boot_up_values.ulUClk;
 		data->vbios_boot_state.soc_clock = boot_up_values.ulSocClk;
+		data->vbios_boot_state.dcef_clock = boot_up_values.ulDCEFClk;
 		if (0 != boot_up_values.usVddc) {
 			smum_send_msg_to_smc_with_parameter(hwmgr->smumgr,
 						PPSMC_MSG_SetFloorSocVoltage,
@@ -2459,6 +2460,9 @@ static int vega10_init_smc_table(struct pp_hwmgr *hwmgr)
 		} else {
 			data->vbios_boot_state.bsoc_vddc_lock = false;
 		}
+		smum_send_msg_to_smc_with_parameter(hwmgr->smumgr,
+				PPSMC_MSG_SetMinDeepSleepDcefclk,
+			(uint32_t)(data->vbios_boot_state.dcef_clock / 100));
 	}
 
 	result = vega10_populate_avfs_parameters(hwmgr);

drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.h

@@ -185,6 +185,7 @@ struct vega10_vbios_boot_state {
 	uint32_t    gfx_clock;
 	uint32_t    mem_clock;
 	uint32_t    soc_clock;
+	uint32_t    dcef_clock;
 };
 
 #define DPMTABLE_OD_UPDATE_SCLK     0x00000001