diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2023-03-20 11:05:21 +0200 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2023-03-24 23:56:35 +0200 |
| commit | c5de248484afeb6de259239a23645790038d9df3 (patch) | |
| tree | 828a96a5142a3edcbff126f601e9c5d23c4f447d /drivers/gpu/drm/i915/display/skl_universal_plane.c | |
| parent | 5a08585d38d66dd64b8ae22229bdfae3fdc1ef3e (diff) | |
drm/i915/dpt: Add a modparam to disable DPT via the chicken bit
Add i915.enable_dpt modparam to allow disabling the DPT
usage in hardware via the chicken bit. Useful when debugging
potential DPT issues.
Quickly smoke tested on ADL.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230320090522.9909-6-ville.syrjala@linux.intel.com
Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/i915/display/skl_universal_plane.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/skl_universal_plane.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/skl_universal_plane.c b/drivers/gpu/drm/i915/display/skl_universal_plane.c index fd0065a46ec5..8ea0598a5a07 100644 --- a/drivers/gpu/drm/i915/display/skl_universal_plane.c +++ b/drivers/gpu/drm/i915/display/skl_universal_plane.c @@ -2475,6 +2475,12 @@ skl_get_initial_plane_config(struct intel_crtc *crtc, goto error; } + if (!dev_priv->params.enable_dpt && + intel_fb_modifier_uses_dpt(dev_priv, fb->modifier)) { + drm_dbg_kms(&dev_priv->drm, "DPT disabled, skipping initial FB\n"); + goto error; + } + /* * DRM_MODE_ROTATE_ is counter clockwise to stay compatible with Xrandr * while i915 HW rotation is clockwise, thats why this swapping. |