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Rev 6661 Rev 6938
Line 154... Line 154...
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u32 r600_dpm_get_vblank_time(struct radeon_device *rdev)
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u32 r600_dpm_get_vblank_time(struct radeon_device *rdev)
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{
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{
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	struct drm_device *dev = rdev->ddev;
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	struct drm_device *dev = rdev->ddev;
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	struct drm_crtc *crtc;
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	struct drm_crtc *crtc;
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	struct radeon_crtc *radeon_crtc;
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	struct radeon_crtc *radeon_crtc;
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	u32 vblank_in_pixels;
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	u32 line_time_us, vblank_lines;
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	u32 vblank_time_us = 0xffffffff; /* if the displays are off, vblank time is max */
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	u32 vblank_time_us = 0xffffffff; /* if the displays are off, vblank time is max */
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	if (rdev->num_crtc && rdev->mode_info.mode_config_initialized) {
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	if (rdev->num_crtc && rdev->mode_info.mode_config_initialized) {
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		list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
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		list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
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			radeon_crtc = to_radeon_crtc(crtc);
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			radeon_crtc = to_radeon_crtc(crtc);
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			if (crtc->enabled && radeon_crtc->enabled && radeon_crtc->hw_mode.clock) {
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			if (crtc->enabled && radeon_crtc->enabled && radeon_crtc->hw_mode.clock) {
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				vblank_in_pixels =
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				line_time_us = (radeon_crtc->hw_mode.crtc_htotal * 1000) /
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					radeon_crtc->hw_mode.crtc_htotal *
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					radeon_crtc->hw_mode.clock;
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					(radeon_crtc->hw_mode.crtc_vblank_end -
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				vblank_lines = radeon_crtc->hw_mode.crtc_vblank_end -
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					radeon_crtc->hw_mode.crtc_vdisplay +
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					radeon_crtc->hw_mode.crtc_vdisplay +
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					 (radeon_crtc->v_border * 2));
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					(radeon_crtc->v_border * 2);
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				vblank_time_us = vblank_in_pixels * 1000 / radeon_crtc->hw_mode.clock;
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				vblank_time_us = vblank_lines * line_time_us;
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				break;
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				break;
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			}
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			}
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		}
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		}