Change-Id: If0f10dc8002ef8b923177cbf36d0d76316bd017c
Signed-off-by: Rex Zhu <Rex.Zhu at amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.c | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.c
index fe36caf..14f57d9 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.c
@@ -113,24 +113,26 @@ void amdgpu_dpm_print_ps_status(struct amdgpu_device *adev,
printk("\n");
}
+
u32 amdgpu_dpm_get_vblank_time(struct amdgpu_device *adev)
{
struct drm_device *dev = adev->ddev;
struct drm_crtc *crtc;
struct amdgpu_crtc *amdgpu_crtc;
- u32 line_time_us, vblank_lines;
+ u32 vblank_in_pixels;
u32 vblank_time_us = 0xffffffff; /* if the displays are off, vblank time is max */
if (adev->mode_info.num_crtc && adev->mode_info.mode_config_initialized) {
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
amdgpu_crtc = to_amdgpu_crtc(crtc);
if (crtc->enabled && amdgpu_crtc->enabled && amdgpu_crtc->hw_mode.clock) {
- line_time_us = (amdgpu_crtc->hw_mode.crtc_htotal * 1000) /
- amdgpu_crtc->hw_mode.clock;
- vblank_lines = amdgpu_crtc->hw_mode.crtc_vblank_end -
+ vblank_in_pixels =
+ amdgpu_crtc->hw_mode.crtc_htotal *
+ (amdgpu_crtc->hw_mode.crtc_vblank_end -
amdgpu_crtc->hw_mode.crtc_vdisplay +
- (amdgpu_crtc->v_border * 2);
- vblank_time_us = vblank_lines * line_time_us;
+ (amdgpu_crtc->v_border * 2));
+
+ vblank_time_us = vblank_in_pixels * 1000 / amdgpu_crtc->hw_mode.clock;
break;
}
}
--
1.9.1
