diff options
| author | Imre Deak <imre.deak@intel.com> | 2021-11-01 20:35:51 +0200 |
|---|---|---|
| committer | Imre Deak <imre.deak@intel.com> | 2021-11-03 11:07:24 +0200 |
| commit | 9755f055f5121c40c481c1d5dd02a1c3fb0e7953 (patch) | |
| tree | 4d49ce6f9f06312b4927e9da00ed9d3fe196d0e9 /drivers/gpu/drm/i915/display/intel_dpt.h | |
| parent | 8d2f683f1c49b3a3c56ab92437722eda7e85bac2 (diff) | |
drm/i915: Restore memory mapping for DPT FBs across system suspend/resume
At least during hibernation the DPT mappings are lost with all stolen
memory content, so suspend/resume these mappings similarly to GGTT
mappings.
This fixes a problem where the restoring modeset during system resume fails
with pipe faults if a tiled framebuffer was active before suspend.
v2: Clarify the way restore works in intel_dpt_resume()'s Docbook entry.
(Chris)
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Vunny Sodhi <vunny.sodhi@intel.com>
Reported-and-tested-by: Vunny Sodhi <vunny.sodhi@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211101183551.3580546-2-imre.deak@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_dpt.h')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_dpt.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_dpt.h b/drivers/gpu/drm/i915/display/intel_dpt.h index 45142b8f849f..e18a9f767b11 100644 --- a/drivers/gpu/drm/i915/display/intel_dpt.h +++ b/drivers/gpu/drm/i915/display/intel_dpt.h @@ -6,6 +6,8 @@ #ifndef __INTEL_DPT_H__ #define __INTEL_DPT_H__ +struct drm_i915_private; + struct i915_address_space; struct i915_vma; struct intel_framebuffer; @@ -13,6 +15,8 @@ struct intel_framebuffer; void intel_dpt_destroy(struct i915_address_space *vm); struct i915_vma *intel_dpt_pin(struct i915_address_space *vm); void intel_dpt_unpin(struct i915_address_space *vm); +void intel_dpt_suspend(struct drm_i915_private *i915); +void intel_dpt_resume(struct drm_i915_private *i915); struct i915_address_space * intel_dpt_create(struct intel_framebuffer *fb); |