diff options
| author |   Ville Syrjälä <ville.syrjala@linux.intel.com> | 2016-05-31 12:08:34 +0300 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2016-06-02 14:33:09 +0300 |
| commit | df457245b5b7515cf97763ebd8975229e34d4cf3 (patch) | |
| tree | 18a92c7579e505989a240a05d54eeb5e2e3eb05c /drivers/gpu/drm/i915/intel_bios.c | |
| parent | drm/i915: Silence "unexpected child device config size" for VBT on 845g (diff) | |
| download | linux-dev-df457245b5b7515cf97763ebd8975229e34d4cf3.tar.xz linux-dev-df457245b5b7515cf97763ebd8975229e34d4cf3.zip | |
drm/i915: Extract physical display dimensions from VBT
The VBT has these mysterious H/V image sizes as part of the display
timings. Looking at some dumps those appear to be the physical
dimensions in mm. Which makes sense since the timing descriptor matches
the format used by EDID detailed timing descriptor, which defines these
as "H/V Addressable Video Image Size in mm".
So let's use that information from the panel fixed mode to get the
physical dimensions for LVDS/eDP/DSI displays. And with that we can
fill out the display_info so that userspace can get at it via
GetConnector.
v2: Use (hi<<8)|lo instead of broken (hi<<4)+lo
Handle LVDS and eDP too
Cc: Stephen Just <stephenjust@gmail.com>
Tested-by: Stephen Just <stephenjust@gmail.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=96255
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1464685714-30507-1-git-send-email-ville.syrjala@linux.intel.com
Reviewed-by: Mika Kahola <mika.kahola@intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_bios.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_bios.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c index e04e03b2da84..713a02db378a 100644 --- a/drivers/gpu/drm/i915/intel_bios.c +++ b/drivers/gpu/drm/i915/intel_bios.c @@ -139,6 +139,11 @@ fill_detail_timing_data(struct drm_display_mode *panel_fixed_mode, else panel_fixed_mode->flags |= DRM_MODE_FLAG_NVSYNC; + panel_fixed_mode->width_mm = (dvo_timing->himage_hi << 8) | + dvo_timing->himage_lo; + panel_fixed_mode->height_mm = (dvo_timing->vimage_hi << 8) | + dvo_timing->vimage_lo; + /* Some VBTs have bogus h/vtotal values */ if (panel_fixed_mode->hsync_end > panel_fixed_mode->htotal) panel_fixed_mode->htotal = panel_fixed_mode->hsync_end + 1; |