diff options
| author | Jani Nikula <jani.nikula@intel.com> | 2022-02-10 19:16:03 +0300 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2022-02-11 10:54:42 +0300 |
| commit | 69898171829d6fb92e366a989f2f14d8b5b15e21 (patch) | |
| tree | 6ee40f13b8ca39bc33c2bca2dc3ee3e3b51933ad /drivers/gpu/drm/i915/display/intel_opregion.c | |
| parent | 66b09ddd8b323547e24871ec05fc63c44a557877 (diff) | |
| download | linux-69898171829d6fb92e366a989f2f14d8b5b15e21.tar.xz | |
drm/i915/opregion: handle SWSCI Mailbox #2 obsoletion
Opregion Mailbox #2 is obsolete for SWSCI usage in opregion v2.x, and
repurposed in opregion v3.x. Warn about obsole mailbox presence in v2.x,
and ignore with an error for v3.x.
v2: Demote drm_warn() to drm_dbg() on opregion v2.x
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/20220210161603.647254-1-jani.nikula@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_opregion.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_opregion.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_opregion.c b/drivers/gpu/drm/i915/display/intel_opregion.c index ce3d44cc2461..11de19da0948 100644 --- a/drivers/gpu/drm/i915/display/intel_opregion.c +++ b/drivers/gpu/drm/i915/display/intel_opregion.c @@ -932,9 +932,17 @@ int intel_opregion_setup(struct drm_i915_private *dev_priv) } if (mboxes & MBOX_SWSCI) { - drm_dbg(&dev_priv->drm, "SWSCI supported\n"); - opregion->swsci = base + OPREGION_SWSCI_OFFSET; - swsci_setup(dev_priv); + u8 major = opregion->header->over.major; + + if (major >= 3) { + drm_err(&dev_priv->drm, "SWSCI Mailbox #2 present for opregion v3.x, ignoring\n"); + } else { + if (major >= 2) + drm_dbg(&dev_priv->drm, "SWSCI Mailbox #2 present for opregion v2.x\n"); + drm_dbg(&dev_priv->drm, "SWSCI supported\n"); + opregion->swsci = base + OPREGION_SWSCI_OFFSET; + swsci_setup(dev_priv); + } } if (mboxes & MBOX_ASLE) { |