On 11/10/2023 3:40 PM, Ankit Nautiyal wrote:
This patch series adds support for DSC fractional compressed bpp
for MTL+. The series starts with some fixes, followed by patches that
lay groundwork to iterate over valid compressed bpps to select the
'best' compressed bpp with optimal link configuration (taken from
upstream series: https://patchwork.freedesktop.org/series/105200/).
The later patches, add changes to accommodate compressed bpp with
fractional part, including changes to QP calculations.
To get the 'best' compressed bpp, we iterate over the valid compressed
bpp values, but with fractional step size 1/16, 1/8, 1/4 or 1/2 as per
sink support.
The last 2 patches add support to depict DSC sink's fractional support,
and debugfs to enforce use of fractional bpp, while choosing an
appropriate compressed bpp.
Rev10: Rebased and added DSC Fractional support for DP MST.
Pushed patches 1-8 to drm-intel-next, thanks for the reviews, acks.
Regards,
Ankit
Ankit Nautiyal (8):
drm/display/dp: Add helper function to get DSC bpp precision
drm/i915/display: Store compressed bpp in U6.4 format
drm/i915/display: Consider fractional vdsc bpp while computing m_n
values
drm/i915/audio: Consider fractional vdsc bpp while computing tu_data
drm/i915/dp: Iterate over output bpp with fractional step size
drm/i915/dp_mst: Use precision of 1/16 for computing bpp
drm/i916/dp_mst: Iterate over the DSC bpps as per DSC precision
support
drm/i915/dp_mst: Add support for forcing dsc fractional bpp via
debugfs
Swati Sharma (2):
drm/i915/dsc: Add debugfs entry to validate DSC fractional bpp
drm/i915/dsc: Allow DSC only with fractional bpp when forced from
debugfs
Vandita Kulkarni (1):
drm/i915/dsc/mtl: Add support for fractional bpp
drivers/gpu/drm/display/drm_dp_helper.c | 27 ++++++
drivers/gpu/drm/i915/display/icl_dsi.c | 10 +--
drivers/gpu/drm/i915/display/intel_audio.c | 16 ++--
drivers/gpu/drm/i915/display/intel_bios.c | 4 +-
drivers/gpu/drm/i915/display/intel_cdclk.c | 5 +-
drivers/gpu/drm/i915/display/intel_display.c | 6 +-
.../drm/i915/display/intel_display_debugfs.c | 84 ++++++++++++++++++
.../drm/i915/display/intel_display_types.h | 4 +-
drivers/gpu/drm/i915/display/intel_dp.c | 87 +++++++++++--------
drivers/gpu/drm/i915/display/intel_dp_mst.c | 85 +++++++++++-------
drivers/gpu/drm/i915/display/intel_fdi.c | 3 +-
drivers/gpu/drm/i915/display/intel_link_bw.c | 2 +-
.../gpu/drm/i915/display/intel_qp_tables.c | 3 -
drivers/gpu/drm/i915/display/intel_vdsc.c | 29 +++++--
include/drm/display/drm_dp_helper.h | 1 +
15 files changed, 266 insertions(+), 100 deletions(-)
