drm/radeon: parse the acp clock voltage deps table

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

1 files changed, 26 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/r600_dpm.c b/drivers/gpu/drm/radeon/r600_dpm.c
index 314886ab011b..bf851ac5491a 100644
--- a/drivers/gpu/drm/radeon/r600_dpm.c
+++ b/drivers/gpu/drm/radeon/r600_dpm.c
@@ -1106,6 +1106,30 @@ int r600_parse_extended_power_table(struct radeon_device *rdev)
                         rdev->pm.dpm.dyn_state.ppm_table->tj_max =
                                 le32_to_cpu(ppm->ulTjmax);
                 }
+                if ((le16_to_cpu(ext_hdr->usSize) >= SIZE_OF_ATOM_PPLIB_EXTENDEDHEADER_V6) &&
+                        ext_hdr->usACPTableOffset) {
+                        ATOM_PPLIB_ACPClk_Voltage_Limit_Table *limits =
+                                (ATOM_PPLIB_ACPClk_Voltage_Limit_Table *)
+                                (mode_info->atom_context->bios + data_offset +
+                                 le16_to_cpu(ext_hdr->usACPTableOffset) + 1);
+                        u32 size = limits->numEntries *
+                                sizeof(struct radeon_clock_voltage_dependency_entry);
+                        rdev->pm.dpm.dyn_state.acp_clock_voltage_dependency_table.entries =
+                                kzalloc(size, GFP_KERNEL);
+                        if (!rdev->pm.dpm.dyn_state.acp_clock_voltage_dependency_table.entries) {
+                                r600_free_extended_power_table(rdev);
+                                return -ENOMEM;
+                        }
+                        rdev->pm.dpm.dyn_state.acp_clock_voltage_dependency_table.count =
+                                limits->numEntries;
+                        for (i = 0; i < limits->numEntries; i++) {
+                                rdev->pm.dpm.dyn_state.acp_clock_voltage_dependency_table.entries[i].clk =
+                                        le16_to_cpu(limits->entries[i].usACPClockLow) |
+                                        (limits->entries[i].ucACPClockHigh << 16);
+                                rdev->pm.dpm.dyn_state.acp_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_V7) &&
                         ext_hdr->usPowerTuneTableOffset) {
                         u8 rev = *(u8 *)(mode_info->atom_context->bios + data_offset +
@@ -1173,6 +1197,8 @@ void r600_free_extended_power_table(struct radeon_device *rdev)
                 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);
+        if (rdev->pm.dpm.dyn_state.acp_clock_voltage_dependency_table.entries)
+                kfree(rdev->pm.dpm.dyn_state.acp_clock_voltage_dependency_table.entries);
 }
 
 enum radeon_pcie_gen r600_get_pcie_gen_support(struct radeon_device *rdev,