drm/radeon/kms/pm: patch default power state with default clocks/voltages on r6xx+

The default power state does not always match the default clocks and voltage
for a particular card.  The information in the firmware info table is correct
and should be used in preference to the info the default power state.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index 24ebb4e..42bcaf4 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -1755,9 +1755,22 @@ void radeon_atombios_get_power_modes(struct radeon_device *rdev)
                                rdev->pm.power_state[state_index].misc2 = 0;
                        }
                } else {
+                       int fw_index = GetIndexIntoMasterTable(DATA, FirmwareInfo);
+                       uint8_t fw_frev, fw_crev;
+                       uint16_t fw_data_offset, vddc = 0;
+                       union firmware_info *firmware_info;
+                       ATOM_PPLIB_THERMALCONTROLLER *controller = &power_info->info_4.sThermalController;
+
+                       if (atom_parse_data_header(mode_info->atom_context, fw_index, NULL,
+                                                  &fw_frev, &fw_crev, &fw_data_offset)) {
+                               firmware_info =
+                                       (union firmware_info *)(mode_info->atom_context->bios +
+                                                               fw_data_offset);
+                               vddc = firmware_info->info_14.usBootUpVDDCVoltage;
+                       }
+
                        /* add the i2c bus for thermal/fan chip */
                        /* no support for internal controller yet */
-                       ATOM_PPLIB_THERMALCONTROLLER *controller = &power_info->info_4.sThermalController;
                        if (controller->ucType > 0) {
                                if ((controller->ucType == ATOM_PP_THERMALCONTROLLER_RV6xx) ||
                                    (controller->ucType == ATOM_PP_THERMALCONTROLLER_RV770) ||
@@ -1904,6 +1917,16 @@ void radeon_atombios_get_power_modes(struct radeon_device *rdev)
                                                rdev->pm.default_power_state_index = state_index;
                                                rdev->pm.power_state[state_index].default_clock_mode =
                                                        &rdev->pm.power_state[state_index].clock_info[mode_index - 1];
+                                               /* patch the table values with the default slck/mclk from firmware info */
+                                               for (j = 0; j < mode_index; j++) {
+                                                       rdev->pm.power_state[state_index].clock_info[j].mclk =
+                                                               rdev->clock.default_mclk;
+                                                       rdev->pm.power_state[state_index].clock_info[j].sclk =
+                                                               rdev->clock.default_sclk;
+                                                       if (vddc)
+                                                               rdev->pm.power_state[state_index].clock_info[j].voltage.voltage =
+                                                                       vddc;
+                                               }
                                        }
                                        state_index++;
                                }