drm/amd/powerplay: move asic unrelated function to hwmgr.c.

It's generic and used by multiple asics.

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>

1 files changed, 38 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c
index 7d69ed6..1c48917 100644
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c
@@ -30,6 +30,9 @@
 #include "pppcielanes.h"
 #include "pp_debug.h"
 #include "ppatomctrl.h"
+#include "ppsmc.h"
+
+#define VOLTAGE_SCALE               4
 
 extern int cz_hwmgr_init(struct pp_hwmgr *hwmgr);
 extern int tonga_hwmgr_init(struct pp_hwmgr *hwmgr);
@@ -566,3 +569,38 @@ uint32_t phm_get_lowest_enabled_level(struct pp_hwmgr *hwmgr, uint32_t mask)
 
 	return level;
 }
+
+void phm_apply_dal_min_voltage_request(struct pp_hwmgr *hwmgr)
+{
+	struct phm_ppt_v1_information *table_info =
+			(struct phm_ppt_v1_information *)hwmgr->pptable;
+	struct phm_clock_voltage_dependency_table *table =
+				table_info->vddc_dep_on_dal_pwrl;
+	struct phm_ppt_v1_clock_voltage_dependency_table *vddc_table;
+	enum PP_DAL_POWERLEVEL dal_power_level = hwmgr->dal_power_level;
+	uint32_t req_vddc = 0, req_volt, i;
+
+	if (!table || table->count <= 0
+		|| dal_power_level < PP_DAL_POWERLEVEL_ULTRALOW
+		|| dal_power_level > PP_DAL_POWERLEVEL_PERFORMANCE)
+		return;
+
+	for (i = 0; i < table->count; i++) {
+		if (dal_power_level == table->entries[i].clk) {
+			req_vddc = table->entries[i].v;
+			break;
+		}
+	}
+
+	vddc_table = table_info->vdd_dep_on_sclk;
+	for (i = 0; i < vddc_table->count; i++) {
+		if (req_vddc <= vddc_table->entries[i].vddc) {
+			req_volt = (((uint32_t)vddc_table->entries[i].vddc) * VOLTAGE_SCALE);
+			smum_send_msg_to_smc_with_parameter(hwmgr->smumgr,
+					PPSMC_MSG_VddC_Request, req_volt);
+			return;
+		}
+	}
+	printk(KERN_ERR "DAL requested level can not"
+			" found a available voltage in VDDC DPM Table \n");
+}