drm: Shrink {width,height}_mm to u16

Instead of supporting ~2000km wide displayes let's limit ourselves
to ~65m. That seems plenty big enough to me.

Even with EDID_QUIRK_DETAILED_IN_CM EDIDs seem to be limited to
10*0xfff which fits into the 16 bits.

Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200428171940.19552-6-ville.syrjala@linux.intel.com

diff --git a/include/drm/drm_modes.h b/include/drm/drm_modes.h
index 01ec0c6..b93b5dc 100644 (file)
--- a/include/drm/drm_modes.h
+++ b/include/drm/drm_modes.h
@@ -331,7 +331,7 @@ struct drm_display_mode {
         * Addressable size of the output in mm, projectors should set this to
         * 0.
         */
-       int width_mm;
+       u16 width_mm;
 
        /**
         * @height_mm:
@@ -339,7 +339,7 @@ struct drm_display_mode {
         * Addressable size of the output in mm, projectors should set this to
         * 0.
         */
-       int height_mm;
+       u16 height_mm;
 
        /**
         * @crtc_clock: