drm/i915/dp: Track the pipe and link bpp limits separately

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A follow-up patch will need to limit the output link bpp both in the
non-DSC and DSC configuration, so track the pipe and link bpp limits
separately in the link_config_limits struct.

Use .4 fixed point format for link bpp matching the 1/16 bpp granularity
in DSC mode and for now keep this limit matching the pipe bpp limit.

v2: (Jani)
- Add to_bpp_int(), to_bpp_x16() helpers instead of opencoding them.
- Rename link_config_limits::link.min/max_bpp to min/max_bpp_x16.

Cc: Jani Nikula <jani.nikula@linux.intel.com>
Reviewed-by: Luca Coelho <luciano.coelho@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230921195159.2646027-3-imre.deak@intel.com

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This commit is contained in:

Imre Deak 2023-09-21 22:51:50 +03:00

parent 72b2d2a6f1

commit 703c5994fe

4 changed files with 45 additions and 18 deletions

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10

drivers/gpu/drm/i915/display/intel_display_types.h

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27

drivers/gpu/drm/i915/display/intel_dp.c

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9

drivers/gpu/drm/i915/display/intel_dp.h

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17

drivers/gpu/drm/i915/display/intel_dp_mst.c

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