drm/i915/psr: Improve fast and IO wake lines calculation

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Current fast and IO wake lines calculation is assuming fast wake sync
length is 18 pulses. Let's improve this by checking actual length.

Add getter for IO buffer wake time and return 10 us there which was assumed
with static 42 us IO wake time. Upcoming patches will extent this for
different display versions.

Bspec: 65450

v3:
  - s/get_io_buffer_wake_time/io_buffer_wake_time/ and use it directly in
    calculation.
v2:
  - rename io_wake_time in if block to io_buffer_wake_time
  - rename get_io_wake_time to get_io_buffer_wake_time

Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240313133221.868391-3-jouni.hogander@intel.com

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This commit is contained in:

Jouni Högander 2024-03-13 15:32:19 +02:00

parent 8453c12aa2

commit fe10e7c681

1 changed files with 14 additions and 6 deletions

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

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