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authorVille Syrjälä <ville.syrjala@linux.intel.com>2018-11-14 15:32:55 +0200
committerJoonas Lahtinen <joonas.lahtinen@linux.intel.com>2018-11-15 13:57:20 +0200
commit6e8adf6f4a4fa57dd3bef6b70de96e2b7b311204 (patch)
treec718f7455da456bf8eb64df62965c77b68a8d456 /drivers/gpu/drm/i915/intel_hotplug.c
parent27971d613fcb5b6ad96320bc4f2c90f4d4fde768 (diff)
drm/i915: Account for scale factor when calculating initial phase
To get the initial phase correct we need to account for the scale factor as well. I forgot this initially and was mostly looking at heavily upscaled content where the minor difference between -0.5 and the proper initial phase was not readily apparent. And let's toss in a comment that tries to explain the formula a little bit. v2: The initial phase upper limit is 1.5, not 24.0! Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Fixes: 0a59952b24e2 ("drm/i915: Configure SKL+ scaler initial phase correctly") Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20181029181820.21956-1-ville.syrjala@linux.intel.com Tested-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com> Tested-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> #irc Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> #irc (cherry picked from commit e7a278a329dd8aa2c70c564849f164cb5673689c) Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_hotplug.c')
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