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[Deepin-Kernel-SIG] [linux 6.6.y] [Upstream] i915 fixes backport from v6.7 - #2253

Merged

opsiff merged 145 commits into

deepin-community:linux-6.6.yfrom

opsiff:linux-6.6.y-2026-11-05-i915-2

Nov 6, 2026

Merged

[Deepin-Kernel-SIG] [linux 6.6.y] [Upstream] i915 fixes backport from v6.7#2253
opsiff merged 145 commits into
deepin-community:linux-6.6.yfrom
opsiff:linux-6.6.y-2026-11-05-i915-2

Commits on Nov 6, 2026
- drm/i915/dg2: Drop pre-production display workarounds
  
  mattrope
  authored and
  opsiff
  committed
  15c2ccb
- drm/i915: Eliminate has_4tile feature flag
  
  mattrope
  authored and
  opsiff
  committed
  8734cb6
- drm/i915/display: call gmdid display probe at a higher level
  
  jnikula
  authored and
  opsiff
  committed
  b818721
- drm/i915: move intel_display_device_probe() one level higher
  
  jnikula
  authored and
  opsiff
  committed
  80cc1e1
- drm/i915/display: Fix style and conventions for DP AUX regs
  
  Lucas De Marchi
  authored and
  opsiff
  committed
  08e3308
- drm/i915/display: Use _PICK_EVEN_2RANGES() in DP AUX regs
  
  Lucas De Marchi
  authored and
  opsiff
  committed
  53be8e9
- drm/i915/xe2lpd: Re-order DP AUX regs
  
  Lucas De Marchi
  authored and
  opsiff
  committed
  cc9f46e
- drm/i915/xe2lpd: Add display power well
  
  vodapalliravi12
  authored and
  opsiff
  committed
  1110fd6
- drm/i915/display: Print display info inside driver display initialization
  
  baluvivek
  authored and
  opsiff
  committed
  2b1afd1
- drm/i915: convert INTEL_DISPLAY_ENABLED() into a function
  
  jnikula
  authored and
  opsiff
  committed
  e9d7d45
- drm/i915: move display info related macros to display
  
  jnikula
  authored and
  opsiff
  committed
  2735389
- drm/i915: separate display runtime info init
  
  jnikula
  authored and
  opsiff
  committed
  03e3beb
- drm/i915: separate subplatform init and runtime feature init
  
  jnikula
  authored and
  opsiff
  committed
  bb997b5
- drm/i915: Stop clobbering old crtc state during state check
  
  vsyrjala
  authored and
  opsiff
  committed
  480dd44
- drm/i915: Constify the crtc states in the DPLL checker
  
  vsyrjala
  authored and
  opsiff
  committed
  a9a5d93
- drm/i915: Simplify DPLL state checker calling convention
  
  vsyrjala
  authored and
  opsiff
  committed
  3e2bd8a
- drm/i915: Simplify snps/c10x DPLL state checker calling convetion
  
  vsyrjala
  authored and
  opsiff
  committed
  4a46cde
- drm/i915: Constify remainder of the state checker
  
  vsyrjala
  authored and
  opsiff
  committed
  ca30fad
- drm/i915: Simplify the state checker calling convetions
  
  vsyrjala
  authored and
  opsiff
  committed
  f6bc540
- drm/i915: s/pipe_config/crtc_state/ in the state checker
  
  vsyrjala
  authored and
  opsiff
  committed
  aa10190
- drm/i915: s/dev_priv/i915/ in the state checker
  
  vsyrjala
  authored and
  opsiff
  committed
  5e215d7
- drm/i915/display: Free crtc_state in verify_crtc_state
  
  surajk8
  authored and
  opsiff
  committed
  d2fd72b
- drm/i915/dp: Sanitize DPCD revision check in intel_dp_get_dsc_sink_cap()
  
  ideak
  authored and
  opsiff
  committed
  9842700
- drm/i915/dp: Store DSC DPCD capabilities in the connector
  
  ideak
  authored and
  opsiff
  committed
  23ae36e
- drm/i915/dp_mst: Set connector DSC capabilities and decompression AUX
  
  ideak
  authored and
  opsiff
  committed
  50cda4b
- drm/i915/dp: Use i915/intel connector local variables in i915_dsc_fec_support_show()
  
  ideak
  authored and
  opsiff
  committed
  43a0d22
- drm/i915/dp: Use connector DSC DPCD in i915_dsc_fec_support_show()
  
  ideak
  authored and
  opsiff
  committed
  617135b
- drm/i915/display: Clean up zero initializers
  
  vsyrjala
  authored and
  opsiff
  committed
  74fdb98
- drm/i915/dp: Consider output_format while computing dsc bpp
  
  aknautiyal
  authored and
  opsiff
  committed
  f612ccc
- drm/i915/dp: Move compressed bpp check with 420 format inside the helper
  
  aknautiyal
  authored and
  opsiff
  committed
  49105b7
- drm/i915/dp: Use consistent name for link bpp and compressed bpp
  
  aknautiyal
  authored and
  opsiff
  committed
  6f75184
- drm/i915/dp: Update Bigjoiner interface bits for computing compressed bpp
  
  aknautiyal
  authored and
  opsiff
  committed
  ecaf774
- drm/i915/intel_cdclk: Add vdsc with bigjoiner constraints on min_cdlck
  
  aknautiyal
  authored and
  opsiff
  committed
  de521c8
- drm/i915/dp: Remove extra logs for printing DSC info
  
  aknautiyal
  authored and
  opsiff
  committed
  515375b
- drm/i915/dp: Avoid forcing DSC BPC for MST case
  
  aknautiyal
  authored and
  opsiff
  committed
  f5f0dd9
- drm/i915/dp: Add functions to get min/max src input bpc with DSC
  
  aknautiyal
  authored and
  opsiff
  committed
  a84e05f
- drm/i915/dp: Check min bpc DSC limits for dsc_force_bpc also
  
  aknautiyal
  authored and
  opsiff
  committed
  6e8d28e
- drm/i915/dp: Avoid left shift of DSC output bpp by 4
  
  aknautiyal
  authored and
  opsiff
  committed
  6bb7cf0
- drm/i915/dp: Rename helper to get DSC max pipe_bpp
  
  aknautiyal
  authored and
  opsiff
  committed
  94e977e
- drm/i915/dp: Separate out functions for edp/DP for computing DSC bpp
  
  aknautiyal
  authored and
  opsiff
  committed
  75edd96
- drm/i915/dp: Add DSC BPC/BPP constraints while selecting pipe bpp with DSC
  
  aknautiyal
  authored and
  opsiff
  committed
  4f58aef
- drm/i915/dp: Separate out function to get compressed bpp with joiner
  
  aknautiyal
  authored and
  opsiff
  committed
  d5b6742
- drm/i915/dp: Get optimal link config to have best compressed bpp
  
  aknautiyal
  authored and
  opsiff
  committed
  6edd00d
- drm/i915/dp: Check src/sink compressed bpp limit for edp
  
  aknautiyal
  authored and
  opsiff
  committed
  3582476
- drivers/drm/i915: Honor limits->max_bpp while computing DSC max input bpp
  
  aknautiyal
  authored and
  opsiff
  committed
  895d567
- drm/i915/dp: Skip computing a non-DSC link config if DSC is needed
  
  ideak
  authored and
  opsiff
  committed
  544a1c1
- drm/i915/dp: Factor out helpers to compute the link limits
  
  ideak
  authored and
  opsiff
  committed
  19834f1
- drm/i915/dp: Track the pipe and link bpp limits separately
  
  ideak
  authored and
  opsiff
  committed
  51db2ec
- drm/i915/dp: Update the link bpp limits for DSC mode
  
  ideak
  authored and
  opsiff
  committed
  90f09d3
- drm/i915/dp: Limit the output link bpp in DSC mode
  
  ideak
  authored and
  opsiff
  committed
  60079cc
- drm/i915: Add helpers for BW management on shared display links
  
  ideak
  authored and
  opsiff
  committed
  8c93632
- drm/i915/fdi: Improve FDI BW sharing between pipe B and C
  
  ideak
  authored and
  opsiff
  committed
  026c065
- drm/i915/dp: Use connector DSC DPCD in intel_dp_dsc_compute_max_bpp()
  
  ideak
  authored and
  opsiff
  committed
  5297954
- drm/i915/dp: Use connector DSC DPCD in intel_dp_supports_fec()
  
  ideak
  authored and
  opsiff
  committed
  615093e
- drm/i915/dp: Use connector DSC DPCD in intel_dp_supports_dsc()
  
  ideak
  authored and
  opsiff
  committed
  6c355ae
- drm/i915/dp: Use connector DSC DPCD in intel_dp_dsc_max_sink_compressed_bppx16()
  
  ideak
  authored and
  opsiff
  committed
  3d42a51
- drm/i915/dp: Pass connector DSC DPCD to drm_dp_dsc_sink_supported_input_bpcs()
  
  ideak
  authored and
  opsiff
  committed
  ff7810a
- drm/i915/dp: Pass only the required i915 to intel_dp_source_dsc_version_minor()
  
  ideak
  authored and
  opsiff
  committed
  8d6ffa4
- drm/i915/dp: Pass only the required DSC DPCD to intel_dp_sink_dsc_version_minor()
  
  ideak
  authored and
  opsiff
  committed
  d129516
- drm/i915/dp: Use connector DSC DPCD in intel_dp_dsc_compute_params()
  
  ideak
  authored and
  opsiff
  committed
  9574835
- drm/i915/dp: Use connector DSC DPCD in intel_dp_dsc_supports_format()
  
  ideak
  authored and
  opsiff
  committed
  b149beb
- drm/i915/dp: Use connector DSC DPCD in intel_dp_dsc_get_slice_count()
  
  ideak
  authored and
  opsiff
  committed
  47c9990
- drm/i915/dp: Use connector DSC DPCD in intel_dp_mode_valid()
  
  ideak
  authored and
  opsiff
  committed
  6324972
- drm/i915/dp: Use connector DSC DPCD in intel_dp_dsc_compute_config()
  
  ideak
  authored and
  opsiff
  committed
  1c1846f
- drm/i915/dp_mst: Use connector DSC DPCD in intel_dp_mst_mode_valid_ctx()
  
  ideak
  authored and
  opsiff
  committed
  ab10963
- drm/i915/dp: Remove unused DSC caps from intel_dp
  
  ideak
  authored and
  opsiff
  committed
  8e512f1
- drm/i915/dp: Fix the computation for compressed_bpp for DISPLAY < 13
  
  aknautiyal
  authored and
  opsiff
  committed
  8bebd02
- drm/i915/dp: Iterate DSC BPP from high to low on all platforms
  
  jnikula
  authored and
  opsiff
  committed
  b9f417e
- drm/i915/dp_mst: Fix race between connector registration and setup
  
  ideak
  authored and
  opsiff
  committed
  50c4745
- drm/i915/dp: Fix the max DSC bpc supported by source
  
  aknautiyal
  authored and
  opsiff
  committed
  193a5e3
- drm/i915/dp: Use a mode's crtc_clock vs. clock during state computation
  
  ideak
  authored and
  opsiff
  committed
  1f23ff6
- drm/i915/dp: Fix BW check in is_bw_sufficient_for_dsc_config()
  
  ideak
  authored and
  opsiff
  committed
  823985d
- drm/i915/dp_mst: Fix DSC input BPP computation
  
  ideak
  authored and
  opsiff
  committed
  a76a8d4
- drm/i915/dp: Use the same link bpp budget for DSC validation and configuration
  opsiff
  committed
  3a0c388
- drm/i915/dp_mst: Disable DSC on ICL MST outputs
  
  ideak
  authored and
  opsiff
  committed
  b75a381
- drm/dp_mst: Add helper to determine if an MST port is downstream of another port
  
  ideak
  authored and
  opsiff
  committed
  1ca31e7
- drm/dp_mst: Factor out a helper to check the atomic state of a topology manager
  
  ideak
  authored and
  opsiff
  committed
  3a45ff0
- drm/dp_mst: Allow DSC in any Synaptics last branch device
  
  ideak
  authored and
  opsiff
  committed
  de5abe4
- drm/dp: Add DP_HBLANK_EXPANSION_CAPABLE and DSC_PASSTHROUGH_EN DPCD flags
  
  ideak
  authored and
  opsiff
  committed
  2033eb4
- drm/dp_mst: Add HBLANK expansion quirk for Synaptics MST hubs
  
  ideak
  authored and
  opsiff
  committed
  2d619c9
- drm/dp: Add helpers to calculate the link BW overhead
  
  ideak
  authored and
  opsiff
  committed
  fd4d67a
- drm/dp: Fix divide-by-zero regression on DP MST unplug with nouveau
  
  chris-bainbridge
  authored and
  opsiff
  committed
  fd10279
- drm/i915/dp_mst: Enable FEC early once it's known DSC is needed
  
  ideak
  authored and
  opsiff
  committed
  0b401b2
- drm/i915/dp: Specify the FEC overhead as an increment vs. a remainder
  
  ideak
  authored and
  opsiff
  committed
  d25e888
- drm/i915/dp: Pass actual BW overhead to m_n calculation
  
  ideak
  authored and
  opsiff
  committed
  704d229
- drm/i915/dp_mst: Account for FEC and DSC overhead during BW allocation
  
  ideak
  authored and
  opsiff
  committed
  a6d00be
- drm/i915/dp_mst: Program the DSC PPS SDP for each stream
  
  ideak
  authored and
  opsiff
  committed
  2727131
- drm/i915/dp: Make sure the DSC PPS SDP is disabled whenever DSC is disabled
  
  ideak
  authored and
  opsiff
  committed
  060cb64
- drm/i915/dp_mst: Add missing DSC compression disabling
  
  ideak
  authored and
  opsiff
  committed
  badb244
- drm/i915/dp: Wait for FEC detected status in the sink
  
  ideak
  authored and
  opsiff
  committed
  caef11b
- drm/i915/dp: Disable FEC ready flag in the sink
  
  ideak
  authored and
  opsiff
  committed
  8a77ecb
- drm/i915/dp_mst: Handle the Synaptics HBlank expansion quirk
  
  ideak
  authored and
  opsiff
  committed
  301892d
- drm/i915/dp: Enable DSC via the connector decompression AUX
  
  ideak
  authored and
  opsiff
  committed
  114db26
- drm/i915/dp_mst: Enable DSC passthrough
  
  ideak
  authored and
  opsiff
  committed
  ad4f7da
- drm/i915/dp_mst: Enable MST DSC decompression for all streams
  
  ideak
  authored and
  opsiff
  committed
  1e6416e
- drm/i915/dp_mst: Force modeset CRTC if DSC toggling requires it
  
  ideak
  authored and
  opsiff
  committed
  abacfc9
- drm/i915/dp_mst: Improve BW sharing between MST streams
  
  ideak
  authored and
  opsiff
  committed
  5f01160
- drm/i915/dp_mst: Check BW limitations only after all streams are computed
  
  ideak
  authored and
  opsiff
  committed
  77289f2
- drm/i915: Query compressed bpp properly using correct DPCD and DP Spec info
  
  StanFox1984
  authored and
  opsiff
  committed
  84230f5
- drm/display/dp: Add helper function to get DSC bpp precision
  
  aknautiyal
  authored and
  opsiff
  committed
  8502b20
- drm: Fix DSC BPP increment decoding
  
  ideak
  authored and
  opsiff
  committed
  ba55f1a
- drm/i915/display: Store compressed bpp in U6.4 format
  
  aknautiyal
  authored and
  opsiff
  committed
  9439002
- drm/i915: Fix fractional bpp handling in intel_link_bw_reduce_bpp()
  
  ideak
  authored and
  opsiff
  committed
  d95d3fe
- drm/i915/display: Consider fractional vdsc bpp while computing m_n values
  
  aknautiyal
  authored and
  opsiff
  committed
  16df9bd
- drm/i915/dsc/mtl: Add support for fractional bpp
  
  Vanditakulkarni
  authored and
  opsiff
  committed
  2fd0dc2
- drm/i915/dp: Iterate over output bpp with fractional step size
  
  aknautiyal
  authored and
  opsiff
  committed
  fdddf07
- drm/i915/dsc: Add debugfs entry to validate DSC fractional bpp
  
  swatish2-linux
  authored and
  opsiff
  committed
  fe1e8a2
- drm/i915/dsc: Allow DSC only with fractional bpp when forced from debugfs
  
  swatish2-linux
  authored and
  opsiff
  committed
  677acd7
- drm/dp_mst: Fix PBN divider calculation for UHBR rates
  
  ideak
  authored and
  opsiff
  committed
  53f64a2
- drm/i915/dp: Replace intel_dp_is_uhbr_rate() with drm_dp_is_uhbr_rate()
  
  ideak
  authored and
  opsiff
  committed
  3bca68e
- drm/i915/dp: Account for channel coding efficiency on UHBR links
  
  ideak
  authored and
  opsiff
  committed
  14c2e26
- drm/i915/dp: Fix UHBR link M/N values
  
  ideak
  authored and
  opsiff
  committed
  ab8dc00
- drm/i915/dp_mst: Calculate the BW overhead in intel_dp_mst_find_vcpi_slots_for_bpp()
  
  ideak
  authored and
  opsiff
  committed
  3cea2ba
- drm/i915/dp_mst: Fix PBN / MTP_TU size calculation for UHBR rates
  
  ideak
  authored and
  opsiff
  committed
  3484632
- drm/i915/dp: Report a rounded-down value as the maximum data rate
  
  ideak
  authored and
  opsiff
  committed
  6aa7b33
- drm/i915/dp: Simplify intel_dp_max_data_rate()
  
  ideak
  authored and
  opsiff
  committed
  4b8a479
- drm/i915/dp: Reuse intel_dp_{max,effective}_data_rate in intel_link_compute_m_n()
  
  ideak
  authored and
  opsiff
  committed
  2d14b10
- drm/dp: Add drm_dp_max_dprx_data_rate()
  
  ideak
  authored and
  opsiff
  committed
  4ec2a5e
- drm/i915: Fix display bpp limit computation during system resume
  
  ideak
  authored and
  opsiff
  committed
  47b4342
- drm/i915/dp: Use drm_dp_max_dprx_data_rate()
  
  ideak
  authored and
  opsiff
  committed
  359305d
- drm/i915/dp: Factor out intel_dp_config_required_rate()
  
  ideak
  authored and
  opsiff
  committed
  25ddc66
- drm/i915/dp: Add intel_dp_max_link_data_rate()
  
  ideak
  authored and
  opsiff
  committed
  cc16a68
- drm/i915/dp: Fix connector DSC HW state readout
  
  ideak
  authored and
  opsiff
  committed
  22ba9d2
- drm/i915/dp: Fix DSC state HW readout for SST connectors
  
  ideak
  authored and
  opsiff
  committed
  6980a74
- drm/i915: Extract intel_dp_joiner_needs_dsc()
  
  vsyrjala
  authored and
  opsiff
  committed
  9ceadd2
- drm/i915/mst: Check intel_dp_joiner_needs_dsc()
  
  vsyrjala
  authored and
  opsiff
  committed
  c7cebfa
- drm/i915/adlp: Add MST FEC BS jitter WA (Wa_14013163432)
  
  ideak
  authored and
  opsiff
  committed
  c80cce9
- drm/i915/adlp: Add MST short HBlank WA (Wa_14014143976)
  
  ideak
  authored and
  opsiff
  committed
  5bc7054
- drm/i915/adlp: Add DP MST DPT/DPTP alignment WA (Wa_14014143976)
  
  ideak
  authored and
  opsiff
  committed
  721d5f7
- drm/i915/mtl: Add DP FEC BS jitter WA
  
  ideak
  authored and
  opsiff
  committed
  4a42f77
- drm/i915/dp_mst: Fix symbol clock when calculating the DSC DPT bpp limit
  
  ideak
  authored and
  opsiff
  committed
  8b9c186
- drm/i915/dp_mst: Fix BW limit check when calculating DSC DPT bpp
  
  ideak
  authored and
  opsiff
  committed
  5c14726
- drm/i915/dp_mst: Account for channel coding efficiency in the DSC DPT bpp limit
  
  ideak
  authored and
  opsiff
  committed
  fdfc7a6
- drm/i915/dp_mst: Account with the DSC DPT bpp limit on MTL
  
  ideak
  authored and
  opsiff
  committed
  c1ee31c
- drm/i915/dp_mst: Sanitize calculating the DSC DPT bpp limit
  
  ideak
  authored and
  opsiff
  committed
  8ab145a
- drm/dp: Add drm_dp_128b132b_supported()
  
  ideak
  authored and
  opsiff
  committed
  37667f5
- drm/dp_mst: Factor out drm_dp_mst_port_is_logical()
  
  ideak
  authored and
  opsiff
  committed
  00f4253
- drm/dp_mst: Add drm_dp_mst_aux_for_parent()
  
  ideak
  authored and
  opsiff
  committed
  96172e8
- drm/i915/dp_mst: Make HBLANK expansion quirk work for logical ports
  
  ideak
  authored and
  opsiff
  committed
  78aa883
- drm/i915/dp_mst: Enable HBLANK expansion quirk for UHBR rates
  
  ideak
  authored and
  opsiff
  committed
  b9b8073
- drm/i915/dp_mst: Handle error during DSC BW overhead/slice calculation
  
  ideak
  authored and
  opsiff
  committed
  fc84acb
- drm/i915/dp_mst: Don't require DSC hblank quirk for a non-DSC compatible mode
  
  ideak
  authored and
  opsiff
  committed
  c4ec05c
- drm/i915/vdsc: Use the DSC config tables for DSI panels
  
  surajk8
  authored and
  opsiff
  committed
  147a499
- drm/i915/adlp+: Add DSC early pixel count scaling WA (Wa_1409098942)
  
  ideak
  authored and
  opsiff
  committed
  340614f
- drm/dp_mst: Fix DSC decompression detection in Synaptics branch devices
  
  ideak
  authored and
  opsiff
  committed
  6ccfbb5

Commits

Commits on Nov 6, 2026