drm/i915/lnl: Remove watchdog timers for PSR

Watchdog timers for Lunarlake HW were removed for PSR/PSR2
The patch removes the use of these timers from the driver code.

BSpec: 69895

v2: Reword commit message (Ville)
    Drop HPD mask from LNL (Ville)
    Revise masking logic (Jouni)
v3: Revise commit message (Ville)
    Revert HPD mask removal as irrelevant for this patch (Ville)

Signed-off-by: Mika Kahola <mika.kahola@intel.com>
Reviewed-by: Jouni Högander <jouni.hogander@intel.com>
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231010095233.590613-1-mika.kahola@intel.com

diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index bb65881e87cc269e66ba5fc9fa869a6b612e1dbd..4f1f31fc9529d78c6b71667be70bb1fff46941ce 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -676,7 +676,9 @@ static void hsw_activate_psr1(struct intel_dp *intel_dp)
 
        val |= EDP_PSR_IDLE_FRAMES(psr_compute_idle_frames(intel_dp));
 
-       val |= EDP_PSR_MAX_SLEEP_TIME(max_sleep_time);
+       if (DISPLAY_VER(dev_priv) < 20)
+               val |= EDP_PSR_MAX_SLEEP_TIME(max_sleep_time);
+
        if (IS_HASWELL(dev_priv))
                val |= EDP_PSR_MIN_LINK_ENTRY_TIME_8_LINES;
 
@@ -1400,8 +1402,10 @@ static void intel_psr_enable_source(struct intel_dp *intel_dp,
         */
        mask = EDP_PSR_DEBUG_MASK_MEMUP |
               EDP_PSR_DEBUG_MASK_HPD |
-              EDP_PSR_DEBUG_MASK_LPSP |
-              EDP_PSR_DEBUG_MASK_MAX_SLEEP;
+              EDP_PSR_DEBUG_MASK_LPSP;
+
+       if (DISPLAY_VER(dev_priv) < 20)
+               mask |= EDP_PSR_DEBUG_MASK_MAX_SLEEP;
 
        /*
         * No separate pipe reg write mask on hsw/bdw, so have to unmask all