[Intel-gfx] [PATCH v5 00/11] DSB enablement.

[Animesh Manna]

Display State Buffer (DSB) is hardware capability which allows driver
to batch submit HW programming.

As part of initial enablement common api created which currently used
to program gamma lut proramming.

Going forwad DSB support can be added for HDR and flip related operation.

HSDES: 1209978241
BSpec: 32020

v1: Initial version.

v2: Move intel_dsb files under display folder and fixed an issue.

v3: As per review comments from Chris and Jani,
- removed some unwanted code. (Chris)
- Used i915_gem_object_create_internal instead of _shmem. (Chris)
- cmd_buf_tail removed and can be derived through vma object. (Chris)
- Simplified and optimized code few places. (Chris)
- Called dsb-api directly in callsites instead going via I915_WRITE. (Jani)

v4: Addressed review commnets from Shashank.

v5: Addressed review commnets from Shashank and Jani.

Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
Cc: Jani Nikula <jani.nikula at intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
Cc: Daniel Vetter <daniel at ffwll.ch>
Cc: Imre Deak <imre.deak at intel.com>
Cc: Michel Thierry <michel.thierry at intel.com>
Cc: Uma Shankar <uma.shankar at intel.com>
Cc: Shashank Sharma <shashank.sharma at intel.com>
Cc: Swati Sharma <swati2.sharma at intel.com>
Cc: Lucas De Marchi <lucas.demarchi at intel.com>
Signed-off-by: Animesh Manna <animesh.manna at intel.com>

Animesh Manna (11):
  drm/i915/dsb: feature flag added for display state buffer.
  drm/i915/dsb: DSB context creation.
  drm/i915/dsb: single register write function for DSB.
  drm/i915/dsb: Indexed register write function for DSB.
  drm/i915/dsb: Check DSB engine status.
  drm/i915/dsb: functions to enable/disable DSB engine.
  drm/i915/dsb: function to trigger workload execution of DSB.
  drm/i915/dsb: added dsb refcount to synchronize between get/put.
  drm/i915/dsb: Enable gamma lut programming using DSB.
  drm/i915/dsb: Enable DSB for gen12.
  drm/i915/dsb: Documentation for DSB.

 Documentation/gpu/i915.rst                    |   9 +
 drivers/gpu/drm/i915/Makefile                 |   1 +
 drivers/gpu/drm/i915/display/intel_color.c    |  63 ++--
 .../drm/i915/display/intel_display_types.h    |   3 +
 drivers/gpu/drm/i915/display/intel_dsb.c      | 335 ++++++++++++++++++
 drivers/gpu/drm/i915/display/intel_dsb.h      |  49 +++
 drivers/gpu/drm/i915/i915_drv.h               |   3 +
 drivers/gpu/drm/i915/i915_pci.c               |   3 +-
 drivers/gpu/drm/i915/i915_reg.h               |  10 +
 drivers/gpu/drm/i915/intel_device_info.h      |   1 +
 10 files changed, 454 insertions(+), 23 deletions(-)
 create mode 100644 drivers/gpu/drm/i915/display/intel_dsb.c
 create mode 100644 drivers/gpu/drm/i915/display/intel_dsb.h

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2.22.0