drm/radeon: parse the samu clock voltage deps table

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

diff --git a/drivers/gpu/drm/radeon/r600_dpm.c b/drivers/gpu/drm/radeon/r600_dpm.c
index 98db6ea..314886a 100644 (file)
--- a/drivers/gpu/drm/radeon/r600_dpm.c
+++ b/drivers/gpu/drm/radeon/r600_dpm.c
@@ -1051,6 +1051,30 @@ int r600_parse_extended_power_table(struct radeon_device *rdev)
                                        le16_to_cpu(limits->entries[i].usVoltage);
                        }
                }
+               if ((le16_to_cpu(ext_hdr->usSize) >= SIZE_OF_ATOM_PPLIB_EXTENDEDHEADER_V4) &&
+                       ext_hdr->usSAMUTableOffset) {
+                       ATOM_PPLIB_SAMClk_Voltage_Limit_Table *limits =
+                               (ATOM_PPLIB_SAMClk_Voltage_Limit_Table *)
+                               (mode_info->atom_context->bios + data_offset +
+                                le16_to_cpu(ext_hdr->usSAMUTableOffset) + 1);
+                       u32 size = limits->numEntries *
+                               sizeof(struct radeon_clock_voltage_dependency_entry);
+                       rdev->pm.dpm.dyn_state.samu_clock_voltage_dependency_table.entries =
+                               kzalloc(size, GFP_KERNEL);
+                       if (!rdev->pm.dpm.dyn_state.samu_clock_voltage_dependency_table.entries) {
+                               r600_free_extended_power_table(rdev);
+                               return -ENOMEM;
+                       }
+                       rdev->pm.dpm.dyn_state.samu_clock_voltage_dependency_table.count =
+                               limits->numEntries;
+                       for (i = 0; i < limits->numEntries; i++) {
+                               rdev->pm.dpm.dyn_state.samu_clock_voltage_dependency_table.entries[i].clk =
+                                       le16_to_cpu(limits->entries[i].usSAMClockLow) |
+                                       (limits->entries[i].ucSAMClockHigh << 16);
+                               rdev->pm.dpm.dyn_state.samu_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 *)
@@ -1147,6 +1171,8 @@ void r600_free_extended_power_table(struct radeon_device *rdev)
                kfree(rdev->pm.dpm.dyn_state.vce_clock_voltage_dependency_table.entries);
        if (rdev->pm.dpm.dyn_state.uvd_clock_voltage_dependency_table.entries)
                kfree(rdev->pm.dpm.dyn_state.uvd_clock_voltage_dependency_table.entries);
+       if (rdev->pm.dpm.dyn_state.samu_clock_voltage_dependency_table.entries)
+               kfree(rdev->pm.dpm.dyn_state.samu_clock_voltage_dependency_table.entries);
 }
 
 enum radeon_pcie_gen r600_get_pcie_gen_support(struct radeon_device *rdev,