[PATCH 5/9] drm/radeon/dpm: add vce dpm support for TN

[Christian König]

From: Alex Deucher <alexander.deucher at amd.com>

Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/radeon/trinity_dpm.c | 76 ++++++++++++++++++++++++++++++++++++
 1 file changed, 76 insertions(+)

diff --git a/drivers/gpu/drm/radeon/trinity_dpm.c b/drivers/gpu/drm/radeon/trinity_dpm.c
index a5b02c5..e0d0780 100644
--- a/drivers/gpu/drm/radeon/trinity_dpm.c
+++ b/drivers/gpu/drm/radeon/trinity_dpm.c
@@ -985,6 +985,15 @@ static void trinity_set_uvd_clock_after_set_eng_clock(struct radeon_device *rdev
 	trinity_setup_uvd_clocks(rdev, new_rps, old_rps);
 }
 
+static void trinity_set_vce_clock(struct radeon_device *rdev,
+				  struct radeon_ps *new_rps,
+				  struct radeon_ps *old_rps)
+{
+	if ((old_rps->evclk != new_rps->evclk) ||
+	    (old_rps->ecclk != new_rps->ecclk))
+		radeon_set_vce_clocks(rdev, new_rps->evclk, new_rps->ecclk);
+}
+
 static void trinity_program_ttt(struct radeon_device *rdev)
 {
 	struct trinity_power_info *pi = trinity_get_pi(rdev);
@@ -1246,6 +1255,7 @@ int trinity_dpm_set_power_state(struct radeon_device *rdev)
 		trinity_force_level_0(rdev);
 		trinity_unforce_levels(rdev);
 		trinity_set_uvd_clock_after_set_eng_clock(rdev, new_ps, old_ps);
+		trinity_set_vce_clock(rdev, new_ps, old_ps);
 	}
 	trinity_release_mutex(rdev);
 
@@ -1483,7 +1493,35 @@ static void trinity_adjust_uvd_state(struct radeon_device *rdev,
 	}
 }
 
+static int trinity_get_vce_clock_voltage(struct radeon_device *rdev,
+					 u32 evclk, u32 ecclk, u16 *voltage)
+{
+	u32 i;
+	int ret = -EINVAL;
+	struct radeon_vce_clock_voltage_dependency_table *table =
+		&rdev->pm.dpm.dyn_state.vce_clock_voltage_dependency_table;
+
+	if (((evclk == 0) && (ecclk == 0)) ||
+	    (table && (table->count == 0))) {
+		*voltage = 0;
+		return 0;
+	}
+
+	for (i = 0; i < table->count; i++) {
+		if ((evclk <= table->entries[i].evclk) &&
+		    (ecclk <= table->entries[i].ecclk)) {
+			*voltage = table->entries[i].v;
+			ret = 0;
+			break;
+		}
+	}
+
+	/* if no match return the highest voltage */
+	if (ret)
+		*voltage = table->entries[table->count - 1].v;
 
+	return ret;
+}
 
 static void trinity_apply_state_adjust_rules(struct radeon_device *rdev,
 					     struct radeon_ps *new_rps,
@@ -1496,6 +1534,7 @@ static void trinity_apply_state_adjust_rules(struct radeon_device *rdev,
 	u32 min_sclk = pi->sys_info.min_sclk; /* XXX check against disp reqs */
 	u32 sclk_in_sr = pi->sys_info.min_sclk; /* ??? */
 	u32 i;
+	u16 min_vce_voltage;
 	bool force_high;
 	u32 num_active_displays = rdev->pm.dpm.new_active_crtc_count;
 
@@ -1504,6 +1543,14 @@ static void trinity_apply_state_adjust_rules(struct radeon_device *rdev,
 
 	trinity_adjust_uvd_state(rdev, new_rps);
 
+	if (new_rps->vce_active) {
+		new_rps->evclk = rdev->pm.dpm.vce_states[rdev->pm.dpm.vce_level].evclk;
+		new_rps->ecclk = rdev->pm.dpm.vce_states[rdev->pm.dpm.vce_level].ecclk;
+	} else {
+		new_rps->evclk = 0;
+		new_rps->ecclk = 0;
+	}
+
 	for (i = 0; i < ps->num_levels; i++) {
 		if (ps->levels[i].vddc_index < min_voltage)
 			ps->levels[i].vddc_index = min_voltage;
@@ -1512,6 +1559,17 @@ static void trinity_apply_state_adjust_rules(struct radeon_device *rdev,
 			ps->levels[i].sclk =
 				trinity_get_valid_engine_clock(rdev, min_sclk);
 
+		/* patch in vce limits */
+		if (new_rps->vce_active) {
+			/* sclk */
+			if (ps->levels[i].sclk < rdev->pm.dpm.vce_states[rdev->pm.dpm.vce_level].sclk)
+				ps->levels[i].sclk = rdev->pm.dpm.vce_states[rdev->pm.dpm.vce_level].sclk;
+			/* vddc */
+			trinity_get_vce_clock_voltage(rdev, new_rps->evclk, new_rps->ecclk, &min_vce_voltage);
+			if (ps->levels[i].vddc_index < min_vce_voltage)
+				ps->levels[i].vddc_index = min_vce_voltage;
+		}
+
 		ps->levels[i].ds_divider_index =
 			sumo_get_sleep_divider_id_from_clock(rdev, ps->levels[i].sclk, sclk_in_sr);
 
@@ -1733,6 +1791,19 @@ static int trinity_parse_power_table(struct radeon_device *rdev)
 		power_state_offset += 2 + power_state->v2.ucNumDPMLevels;
 	}
 	rdev->pm.dpm.num_ps = state_array->ucNumEntries;
+
+	/* fill in the vce power states */
+	for (i = 0; i < RADEON_MAX_VCE_LEVELS; i++) {
+		u32 sclk;
+		clock_array_index = rdev->pm.dpm.vce_states[i].clk_idx;
+		clock_info = (union pplib_clock_info *)
+			&clock_info_array->clockInfo[clock_array_index * clock_info_array->ucEntrySize];
+		sclk = le16_to_cpu(clock_info->sumo.usEngineClockLow);
+		sclk |= clock_info->sumo.ucEngineClockHigh << 16;
+		rdev->pm.dpm.vce_states[i].sclk = sclk;
+		rdev->pm.dpm.vce_states[i].mclk = 0;
+	}
+
 	return 0;
 }
 
@@ -1914,6 +1985,10 @@ int trinity_dpm_init(struct radeon_device *rdev)
 	if (ret)
 		return ret;
 
+	ret = r600_parse_extended_power_table(rdev);
+	if (ret)
+		return ret;
+
 	ret = trinity_parse_power_table(rdev);
 	if (ret)
 		return ret;
@@ -2000,6 +2075,7 @@ void trinity_dpm_fini(struct radeon_device *rdev)
 	}
 	kfree(rdev->pm.dpm.ps);
 	kfree(rdev->pm.dpm.priv);
+	r600_free_extended_power_table(rdev);
 }
 
 u32 trinity_dpm_get_sclk(struct radeon_device *rdev, bool low)
-- 
1.9.1