drm/radeon: fix endian swapping in vbios fetch for tdp table

[platform/adaptation/renesas_rcar/renesas_kernel.git] / drivers / gpu / drm / radeon / r600_dpm.c

diff --git a/drivers/gpu/drm/radeon/r600_dpm.c b/drivers/gpu/drm/radeon/r600_dpm.c
index e4cc9b3..3334f91 100644 (file)
--- a/drivers/gpu/drm/radeon/r600_dpm.c
+++ b/drivers/gpu/drm/radeon/r600_dpm.c
@@ -158,16 +158,18 @@ u32 r600_dpm_get_vblank_time(struct radeon_device *rdev)
        u32 line_time_us, vblank_lines;
        u32 vblank_time_us = 0xffffffff; /* if the displays are off, vblank time is max */
 
-       list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
-               radeon_crtc = to_radeon_crtc(crtc);
-               if (crtc->enabled && radeon_crtc->enabled && radeon_crtc->hw_mode.clock) {
-                       line_time_us = (radeon_crtc->hw_mode.crtc_htotal * 1000) /
-                               radeon_crtc->hw_mode.clock;
-                       vblank_lines = radeon_crtc->hw_mode.crtc_vblank_end -
-                               radeon_crtc->hw_mode.crtc_vdisplay +
-                               (radeon_crtc->v_border * 2);
-                       vblank_time_us = vblank_lines * line_time_us;
-                       break;
+       if (rdev->num_crtc && rdev->mode_info.mode_config_initialized) {
+               list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+                       radeon_crtc = to_radeon_crtc(crtc);
+                       if (crtc->enabled && radeon_crtc->enabled && radeon_crtc->hw_mode.clock) {
+                               line_time_us = (radeon_crtc->hw_mode.crtc_htotal * 1000) /
+                                       radeon_crtc->hw_mode.clock;
+                               vblank_lines = radeon_crtc->hw_mode.crtc_vblank_end -
+                                       radeon_crtc->hw_mode.crtc_vdisplay +
+                                       (radeon_crtc->v_border * 2);
+                               vblank_time_us = vblank_lines * line_time_us;
+                               break;
+                       }
                }
        }
 
@@ -181,14 +183,15 @@ u32 r600_dpm_get_vrefresh(struct radeon_device *rdev)
        struct radeon_crtc *radeon_crtc;
        u32 vrefresh = 0;
 
-       list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
-               radeon_crtc = to_radeon_crtc(crtc);
-               if (crtc->enabled && radeon_crtc->enabled && radeon_crtc->hw_mode.clock) {
-                       vrefresh = radeon_crtc->hw_mode.vrefresh;
-                       break;
+       if (rdev->num_crtc && rdev->mode_info.mode_config_initialized) {
+               list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+                       radeon_crtc = to_radeon_crtc(crtc);
+                       if (crtc->enabled && radeon_crtc->enabled && radeon_crtc->hw_mode.clock) {
+                               vrefresh = radeon_crtc->hw_mode.vrefresh;
+                               break;
+                       }
                }
        }
-
        return vrefresh;
 }
 
@@ -1206,7 +1209,7 @@ int r600_parse_extended_power_table(struct radeon_device *rdev)
                                        (mode_info->atom_context->bios + data_offset +
                                         le16_to_cpu(ext_hdr->usPowerTuneTableOffset));
                                rdev->pm.dpm.dyn_state.cac_tdp_table->maximum_power_delivery_limit =
-                                       ppt->usMaximumPowerDeliveryLimit;
+                                       le16_to_cpu(ppt->usMaximumPowerDeliveryLimit);
                                pt = &ppt->power_tune_table;
                        } else {
                                ATOM_PPLIB_POWERTUNE_Table *ppt = (ATOM_PPLIB_POWERTUNE_Table *)