drm/radeon: parse the vce clock voltage deps table

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

drivers/gpu/drm/radeon/r600_dpm.c

@@ -989,12 +989,47 @@ int r600_parse_extended_power_table(struct radeon_device *rdev)
 		}
 	}
 
-	/* ppm table */
+	/* ext tables */
 	if (le16_to_cpu(power_info->pplib.usTableSize) >=
 	    sizeof(struct _ATOM_PPLIB_POWERPLAYTABLE3)) {
 		ATOM_PPLIB_EXTENDEDHEADER *ext_hdr = (ATOM_PPLIB_EXTENDEDHEADER *)
 			(mode_info->atom_context->bios + data_offset +
 			 le16_to_cpu(power_info->pplib3.usExtendendedHeaderOffset));
+		if ((le16_to_cpu(ext_hdr->usSize) >= SIZE_OF_ATOM_PPLIB_EXTENDEDHEADER_V2) &&
+			ext_hdr->usVCETableOffset) {
+			VCEClockInfoArray *array = (VCEClockInfoArray *)
+				(mode_info->atom_context->bios + data_offset +
+                                 le16_to_cpu(ext_hdr->usVCETableOffset) + 1);
+			ATOM_PPLIB_VCE_Clock_Voltage_Limit_Table *limits =
+				(ATOM_PPLIB_VCE_Clock_Voltage_Limit_Table *)
+				(mode_info->atom_context->bios + data_offset +
+				 le16_to_cpu(ext_hdr->usVCETableOffset) + 1 +
+				 1 + array->ucNumEntries * sizeof(VCEClockInfo));
+			u32 size = limits->numEntries *
+				sizeof(struct radeon_vce_clock_voltage_dependency_entry);
+			rdev->pm.dpm.dyn_state.vce_clock_voltage_dependency_table.entries =
+				kzalloc(size, GFP_KERNEL);
+			if (!rdev->pm.dpm.dyn_state.vce_clock_voltage_dependency_table.entries) {
+				kfree(rdev->pm.dpm.dyn_state.vddc_dependency_on_sclk.entries);
+				kfree(rdev->pm.dpm.dyn_state.vddci_dependency_on_mclk.entries);
+				kfree(rdev->pm.dpm.dyn_state.vddc_dependency_on_mclk.entries);
+				kfree(rdev->pm.dpm.dyn_state.mvdd_dependency_on_mclk.entries);
+				kfree(rdev->pm.dpm.dyn_state.cac_leakage_table.entries);
+				return -ENOMEM;
+			}
+			rdev->pm.dpm.dyn_state.vce_clock_voltage_dependency_table.count =
+				limits->numEntries;
+			for (i = 0; i < limits->numEntries; i++) {
+				VCEClockInfo *vce_clk =
+					&array->entries[limits->entries[i].ucVCEClockInfoIndex];
+				rdev->pm.dpm.dyn_state.vce_clock_voltage_dependency_table.entries[i].evclk =
+					le16_to_cpu(vce_clk->usEVClkLow) | (vce_clk->ucEVClkHigh << 16);
+				rdev->pm.dpm.dyn_state.vce_clock_voltage_dependency_table.entries[i].ecclk =
+					le16_to_cpu(vce_clk->usECClkLow) | (vce_clk->ucECClkHigh << 16);
+				rdev->pm.dpm.dyn_state.vce_clock_voltage_dependency_table.entries[i].v =
+					le16_to_cpu(limits->entries[i].usVoltage);
+			}
+		}
 		if ((le16_to_cpu(ext_hdr->usSize) >= SIZE_OF_ATOM_PPLIB_EXTENDEDHEADER_V5) &&
 		    ext_hdr->usPPMTableOffset) {
 			ATOM_PPLIB_PPM_Table *ppm = (ATOM_PPLIB_PPM_Table *)
@@ -1008,6 +1043,7 @@ int r600_parse_extended_power_table(struct radeon_device *rdev)
 				kfree(rdev->pm.dpm.dyn_state.vddc_dependency_on_mclk.entries);
 				kfree(rdev->pm.dpm.dyn_state.mvdd_dependency_on_mclk.entries);
 				kfree(rdev->pm.dpm.dyn_state.cac_leakage_table.entries);
+				kfree(rdev->pm.dpm.dyn_state.vce_clock_voltage_dependency_table.entries);
 				return -ENOMEM;
 			}
 			rdev->pm.dpm.dyn_state.ppm_table->ppm_design = ppm->ucPpmDesign;
@@ -1044,6 +1080,7 @@ int r600_parse_extended_power_table(struct radeon_device *rdev)
 				kfree(rdev->pm.dpm.dyn_state.mvdd_dependency_on_mclk.entries);
 				kfree(rdev->pm.dpm.dyn_state.cac_leakage_table.entries);
 				kfree(rdev->pm.dpm.dyn_state.ppm_table);
+				kfree(rdev->pm.dpm.dyn_state.vce_clock_voltage_dependency_table.entries);
 				return -ENOMEM;
 			}
 			if (rev > 0) {
@@ -1096,6 +1133,8 @@ void r600_free_extended_power_table(struct radeon_device *rdev)
 		kfree(rdev->pm.dpm.dyn_state.ppm_table);
 	if (rdev->pm.dpm.dyn_state.cac_tdp_table)
 		kfree(rdev->pm.dpm.dyn_state.cac_tdp_table);
+	if (rdev->pm.dpm.dyn_state.vce_clock_voltage_dependency_table.entries)
+		kfree(rdev->pm.dpm.dyn_state.vce_clock_voltage_dependency_table.entries);
 }
 
 enum radeon_pcie_gen r600_get_pcie_gen_support(struct radeon_device *rdev,