diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2013-01-17 16:31:29 +0200 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-01-20 13:09:44 +0100 |
| commit | 55bc60db5988c8366751d3d04dd690698a53412c (patch) | |
| tree | 1fc546713d825d8b2892d2b113f36c965008f7f1 /drivers/gpu/drm/i915/i915_drv.h | |
| parent | 3685a8f38f2c54bb6058c0e66ae0562f8ab84e66 (diff) | |
| download | lwn-55bc60db5988c8366751d3d04dd690698a53412c.tar.gz lwn-55bc60db5988c8366751d3d04dd690698a53412c.zip | |
drm/i915: Add "Automatic" mode for the "Broadcast RGB" property
Add a new "Automatic" mode to the "Broadcast RGB" range property.
When selected the driver automagically selects between full range and
limited range output.
Based on CEA-861 [1] guidelines, limited range output is selected if the
mode is a CEA mode, except 640x480. Otherwise full range output is used.
Additionally DVI monitors should most likely default to full range
always.
As per DP1.2a [2] DisplayPort should always use full range for 18bpp, and
otherwise will follow CEA-861 rules.
NOTE: The default value for the property will now be "Automatic"
so some people may be affected in case they're relying on the
current full range default.
[1] CEA-861-E - 5.1 Default Encoding Parameters
[2] VESA DisplayPort Ver.1.2a - 5.1.1.1 Video Colorimetry
v2: Use has_hdmi_sink to check if a HDMI monitor is present
v3: Add information about relevant spec chapters
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_drv.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index f3f2e5e1393f..0a2a18b8a075 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -1811,5 +1811,9 @@ __i915_write(64, q) #define POSTING_READ(reg) (void)I915_READ_NOTRACE(reg) #define POSTING_READ16(reg) (void)I915_READ16_NOTRACE(reg) +/* "Broadcast RGB" property */ +#define INTEL_BROADCAST_RGB_AUTO 0 +#define INTEL_BROADCAST_RGB_FULL 1 +#define INTEL_BROADCAST_RGB_LIMITED 2 #endif |