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>

1 files changed, 24 insertions, 1 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index 24ebb4ea7984..42bcaf41b8c4 100644
--- 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++;
                                 }