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drm/radeon/dpm: add helper to fetch the vrefresh of the current mode

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Needed for DPM on CI.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher
2013-07-19 12:42:08 -04:00
parent 61fb192a1c
commit 6bb5c0d74c
2 changed files with 19 additions and 0 deletions
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18
drivers/gpu/drm/radeon/r600_dpm.c
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@@ -174,6 +174,24 @@ u32 r600_dpm_get_vblank_time(struct radeon_device *rdev)
return vblank_time_us;
}
u32 r600_dpm_get_vrefresh(struct radeon_device *rdev)
{
struct drm_device *dev = rdev->ddev;
struct drm_crtc *crtc;
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;
}
}
return vrefresh;
}
void r600_calculate_u_and_p(u32 i, u32 r_c, u32 p_b,
u32 *p, u32 *u)
{