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drm/i915/opregion: early exit from encoder notify if SWSCI isn't there

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Newer platforms aren't supposed to have mailbox #2 or SWSCI
support. Bail out early from encoder notify if that is the case,
skipping the out-of-bounds checks and debug messages.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/82f63313057ed2d96856b3f8d76536826a897bc7.1644489329.git.jani.nikula@intel.com
This commit is contained in:
Jani Nikula 2022-02-10 12:36:44 +02:00
parent 73144c0ce4
commit 66b09ddd8b
1 changed files with 6 additions and 0 deletions
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6
drivers/gpu/drm/i915/display/intel_opregion.c
View file

@ -358,11 +358,17 @@ int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder,
u32 parm = 0;
u32 type = 0;
u32 port;
int ret;
/* don't care about old stuff for now */
if (!HAS_DDI(dev_priv))
return 0;
/* Avoid port out of bounds checks if SWSCI isn't there. */
ret = check_swsci_function(dev_priv, SWSCI_SBCB_DISPLAY_POWER_STATE);
if (ret)
return ret;
if (intel_encoder->type == INTEL_OUTPUT_DSI)
port = 0;
else