drm/i915/lnl: Program PKGC_LATENCY register

If fixed refresh rate program the PKGC_LATENCY register
with the highest latency from level 1 and above LP registers
and program ADDED_WAKE_TIME = DSB execution time.
else program PKGC_LATENCY with all 1's and ADDED_WAKE_TIME as 0.
This is used to improve package C residency by sending the highest
latency tolerance requirement (LTR) when the planes are done with the
frame until the next frame programming window (set context latency,
window 2) starts.
Bspec: 68986

--v2
-Fix indentation [Chaitanya]

--v3
-Take into account if fixed refrersh rate or not [Vinod]
-Added wake time dependengt on DSB execution time [Vinod]
-Use REG_FIELD_PREP [Jani]
-Call program_pkgc_latency from appropriate place [Jani]
-no need for the ~0 while setting max latency [Jani]
-change commit message to add the new changes made in.

--v4
-Remove extra blank line [Vinod]
-move the vrr.enable check to previous loop [Vinod]

Signed-off-by: Suraj Kandpal <[email protected]>
Reviewed-by: Chaitanya Kumar Borah <[email protected]>
Reviewed-by: Vinod Govindapillai <[email protected]>
Signed-off-by: Animesh Manna <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

0 files changed, 0 insertions, 0 deletions