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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2010-12-04 07:45:57 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2010-12-04 13:41:04 +0000 |
| commit | 49078f7d108f132582e5af46304c317b55f83948 (patch) | |
| tree | ce32c5971d1d70444142e7e618c29b63b5a6e4fe | |
| parent | 22ed1113a9adda6e193c329119a384362da01289 (diff) | |
| download | linux-49078f7d108f132582e5af46304c317b55f83948.tar.bz2 | |
drm/i915: Factor in pixel-repeat in FDI M/N calculation
Fixes the modesetting on the secondary panel of the Libretto W100 and
presumably many more Ironlake laptops with SDVO LVDS displays.
Reported-and-tested-by: Matthew Willoughby <mattfredwill@gmail.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@kernel.org
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index fac118b2df7d..d9b7092439ef 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -3710,6 +3710,7 @@ static int intel_crtc_mode_set(struct drm_crtc *crtc, /* FDI link */ if (HAS_PCH_SPLIT(dev)) { + int pixel_multiplier = intel_mode_get_pixel_multiplier(adjusted_mode); int lane = 0, link_bw, bpp; /* CPU eDP doesn't require FDI link, so just set DP M/N according to current link config */ @@ -3793,6 +3794,8 @@ static int intel_crtc_mode_set(struct drm_crtc *crtc, intel_crtc->fdi_lanes = lane; + if (pixel_multiplier > 1) + link_bw *= pixel_multiplier; ironlake_compute_m_n(bpp, lane, target_clock, link_bw, &m_n); } |