]> git.karo-electronics.de Git - linux-beck.git/commit
drm/i915: Fix cdclk vs. dev_cdclk mess when not recomputing things
authorVille Syrjälä <ville.syrjala@linux.intel.com>
Mon, 14 Nov 2016 16:35:09 +0000 (18:35 +0200)
committerVille Syrjälä <ville.syrjala@linux.intel.com>
Wed, 23 Nov 2016 20:19:22 +0000 (22:19 +0200)
commite0ca7a6be38ce603d26df5707c22e53870a623e0
tree1e65e23961afda5966cdade678742dc030577bd9
parent812b1d2fe527c3c68d04f379aef850dd02db5945
drm/i915: Fix cdclk vs. dev_cdclk mess when not recomputing things

When we end up not recomputing the cdclk, we need to populate
intel_state->cdclk with the "atomic_cdclk_freq" instead of the
current cdclk_freq. When no pipes are active, the actual cdclk_freq
may be lower than what the configuration of the planes and
pipes would require from the point of view of the software state.

This fixes bogus WARNS from skl_max_scale() which is trying to check
the plane software state against the cdclk frequency. So any time
it got called during DPMS off for instance, we might have tripped
the warn if the current mode would have required a higher than
minimum cdclk.

v2: Drop the dev_cdclk stuff (Maarten)

Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Mika Kahola <mika.kahola@intel.com>
Cc: bruno.pagani@ens-lyon.org
Cc: Daniel J Blueman <daniel.blueman@gmail.com>
Cc: Paul Bolle <pebolle@tiscali.nl>
Cc: Joseph Yasi <joe.yasi@gmail.com>
Tested-by: Paul Bolle <pebolle@tiscali.nl>
Tested-by: Joseph Yasi <joe.yasi@gmail.com> (v1)
Cc: stable@vger.kernel.org
Fixes: 1a617b77658e ("drm/i915: Keep track of the cdclk as if all crtc's were active.")
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=98214
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1479141311-11904-2-git-send-email-ville.syrjala@linux.intel.com
drivers/gpu/drm/i915/intel_display.c