[PATCH 1/3] drm/i915/psr: LunarLake IO and Fast Wake time line count maximums are 63

[Jouni Högander]

On LunarLake maximum for IO and Fast Wake times are 63. Take this into
account in calculation and when writing the IO Wake lines.

Bspec: 69885, 70294

Signed-off-by: Jouni Högander <jouni.hogander at intel.com>
---
 drivers/gpu/drm/i915/display/intel_psr.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index f5b33335a9ae..678987bbe168 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -1364,8 +1364,9 @@ static bool _compute_alpm_params(struct intel_dp *intel_dp,
 	fast_wake_time = precharge + preamble + phy_wake +
 		tfw_exit_latency;
 
-	if (DISPLAY_VER(i915) >= 12)
-		/* TODO: Check how we can use ALPM_CTL fast wake extended field */
+	if (DISPLAY_VER(i915) >= 20)
+		max_wake_lines = 63;
+	else if (DISPLAY_VER(i915) >= 12)
 		max_wake_lines = 12;
 	else
 		max_wake_lines = 8;
-- 
2.34.1