[PATCH 11/13] drm/amd/powerplay: set vega12 pre display configurations

[Evan Quan <evan.quan-5C7GfCeVMHo@public.gmane.org>]

PPSMC_MSG_NumOfDisplays is set as 0 and uclk is forced as
highest.

Change-Id: I2400279d3c979d99f4dd4b8d53f051cd8f8e0c33
Signed-off-by: Evan Quan <evan.quan@amd.com>
---
 drivers/gpu/drm/amd/powerplay/hwmgr/vega12_hwmgr.c | 41 ++++++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/vega12_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/vega12_hwmgr.c
index 26bdfff..1fadb71 100644
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/vega12_hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/vega12_hwmgr.c
@@ -2110,6 +2110,45 @@ static int vega12_apply_clocks_adjust_rules(struct pp_hwmgr *hwmgr)
 	return 0;
 }
 
+static int vega12_set_uclk_to_highest_dpm_level(struct pp_hwmgr *hwmgr,
+		struct vega12_single_dpm_table *dpm_table)
+{
+	struct vega12_hwmgr *data = (struct vega12_hwmgr *)(hwmgr->backend);
+	int ret = 0;
+
+	if (data->smu_features[GNLD_DPM_UCLK].enabled) {
+		PP_ASSERT_WITH_CODE(dpm_table->count > 0,
+				"[SetUclkToHightestDpmLevel] Dpm table has no entry!",
+				return -EINVAL);
+		PP_ASSERT_WITH_CODE(dpm_table->count <= NUM_UCLK_DPM_LEVELS,
+				"[SetUclkToHightestDpmLevel] Dpm table has too many entries!",
+				return -EINVAL);
+
+		dpm_table->dpm_state.hard_min_level = dpm_table->dpm_levels[dpm_table->count - 1].value;
+		PP_ASSERT_WITH_CODE(!(ret = smum_send_msg_to_smc_with_parameter(hwmgr,
+				PPSMC_MSG_SetHardMinByFreq,
+				(PPCLK_UCLK << 16 ) | dpm_table->dpm_state.hard_min_level)),
+				"[SetUclkToHightestDpmLevel] Set hard min uclk failed!",
+				return ret);
+	}
+
+	return ret;
+}
+
+static int vega12_pre_display_configuration_changed_task(struct pp_hwmgr *hwmgr)
+{
+	struct vega12_hwmgr *data = (struct vega12_hwmgr *)(hwmgr->backend);
+	int ret = 0;
+
+	smum_send_msg_to_smc_with_parameter(hwmgr,
+			PPSMC_MSG_NumOfDisplays, 0);
+
+	ret = vega12_set_uclk_to_highest_dpm_level(hwmgr,
+			&data->dpm_table.mem_table);
+
+	return ret;
+}
+
 static int vega12_display_configuration_changed_task(struct pp_hwmgr *hwmgr)
 {
 	struct vega12_hwmgr *data = (struct vega12_hwmgr *)(hwmgr->backend);
@@ -2358,6 +2397,8 @@ static const struct pp_hwmgr_func vega12_hwmgr_funcs = {
 	.print_clock_levels = vega12_print_clock_levels,
 	.apply_clocks_adjust_rules =
 		vega12_apply_clocks_adjust_rules,
+	.pre_display_config_changed =
+		vega12_pre_display_configuration_changed_task,
 	.display_config_changed = vega12_display_configuration_changed_task,
 	.powergate_uvd = vega12_power_gate_uvd,
 	.powergate_vce = vega12_power_gate_vce,
-- 
2.7.4

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