From: Jouni Högander Date: Fri, 17 May 2024 07:30:03 +0000 (+0300) Subject: drm/i915/psr: LunarLake IO and Fast Wake time line count maximums are 68 X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=45430e7b7c8de9ed910d99cc8906db3db5a1334d;p=users%2Fjedix%2Flinux-maple.git drm/i915/psr: LunarLake IO and Fast Wake time line count maximums are 68 On LunarLake maximum for IO and Fast Wake time line counts are 68: 6 bits + 5 lines added by the HW. Take this into account in calculation and when writing the IO Wake lines. v2: maximum line count is 68 (6 bits + 5 lines added by HW) Signed-off-by: Jouni Högander Reviewed-by: Uma Shankar Link: https://patchwork.freedesktop.org/patch/msgid/20240517073005.2414293-2-jouni.hogander@intel.com --- diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c index df0d14a5023f..f5d3eb776833 100644 --- a/drivers/gpu/drm/i915/display/intel_psr.c +++ b/drivers/gpu/drm/i915/display/intel_psr.c @@ -1421,8 +1421,9 @@ 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 = 68; + else if (DISPLAY_VER(i915) >= 12) max_wake_lines = 12; else max_wake_lines = 8;