drm/i915: Shrink bxt_ddi_buf_trans

All the values we put into the BXT buf_trans tables fit into 8 bits.
So switch over to u8 from the u32 we use currently.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170918182604.9519-3-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>

diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index 797008033089132bbaee8ef8fb82e0d65bebf394..5c709985904e3b4b0520a401e222397c80591ce9 100644 (file)
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -301,10 +301,10 @@ static const struct ddi_buf_trans skl_y_ddi_translations_hdmi[] = {
 };
 
 struct bxt_ddi_buf_trans {
-       u32 margin;     /* swing value */
-       u32 scale;      /* scale value */
-       u32 enable;     /* scale enable */
-       u32 deemphasis;
+       u8 margin;      /* swing value */
+       u8 scale;       /* scale value */
+       u8 enable;      /* scale enable */
+       u8 deemphasis;
        bool default_index; /* true if the entry represents default value */
 };