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/intel_fb.c | |
| parent | drm/i915: Add PLANE_CHICKEN registers (diff) | |
| download | wireguard-linux-c5de248484afeb6de259239a23645790038d9df3.tar.xz wireguard-linux-c5de248484afeb6de259239a23645790038d9df3.zip | |
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/intel_fb.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_fb.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_fb.c b/drivers/gpu/drm/i915/display/intel_fb.c index 9609c5de3f91..e5f637897b5e 100644 --- a/drivers/gpu/drm/i915/display/intel_fb.c +++ b/drivers/gpu/drm/i915/display/intel_fb.c @@ -716,14 +716,15 @@ static unsigned int intel_fb_modifier_to_tiling(u64 fb_modifier) } } -static bool intel_modifier_uses_dpt(struct drm_i915_private *i915, u64 modifier) +bool intel_fb_modifier_uses_dpt(struct drm_i915_private *i915, u64 modifier) { return HAS_DPT(i915) && modifier != DRM_FORMAT_MOD_LINEAR; } bool intel_fb_uses_dpt(const struct drm_framebuffer *fb) { - return fb && intel_modifier_uses_dpt(to_i915(fb->dev), fb->modifier); + return fb && to_i915(fb->dev)->params.enable_dpt && + intel_fb_modifier_uses_dpt(to_i915(fb->dev), fb->modifier); } unsigned int intel_cursor_alignment(const struct drm_i915_private *i915) @@ -1705,7 +1706,7 @@ u32 intel_fb_max_stride(struct drm_i915_private *dev_priv, * The new CCS hash mode makes remapping impossible */ if (DISPLAY_VER(dev_priv) < 4 || intel_fb_is_ccs_modifier(modifier) || - intel_modifier_uses_dpt(dev_priv, modifier)) + intel_fb_modifier_uses_dpt(dev_priv, modifier)) return intel_plane_fb_max_stride(dev_priv, pixel_format, modifier); else if (DISPLAY_VER(dev_priv) >= 7) return 256 * 1024; |