drm/i915: enable 30bpp for DP outputs

We always limited the link bw calculations to 24bpp. Tested with
my shiny new high-bpc screen, seems to work as advertised.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=65280
Tested-by: shui yangwei <yangweix.shui@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 759a1c5..6d56075 100644 (file)
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -704,7 +704,7 @@ intel_dp_compute_config(struct intel_encoder *encoder,
 
        /* Walk through all bpp values. Luckily they're all nicely spaced with 2
         * bpc in between. */
-       bpp = min_t(int, 8*3, pipe_config->pipe_bpp);
+       bpp = pipe_config->pipe_bpp;
        if (is_edp(intel_dp) && dev_priv->vbt.edp_bpp)
                bpp = min_t(int, bpp, dev_priv->vbt.edp_bpp);