IO buffer wake time used for IO wake calculation is dependent on port clock
on LunarLake and beyond. Take this into account in get_io_buffer_wake_time.
Bspec: 65450
v2: add own io_wake_time helper for LunarLake
Signed-off-by: Jouni Högander <jouni.hogander@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_psr.c | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index 747761efa4be..e3daaf05d640 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -1165,11 +1165,23 @@ static int tgl_io_buffer_wake_time(void)
return 10;
}
+static int lnl_io_buffer_wake_time(int port_clock)
+{
+ if (port_clock > 270000)
+ return 10;
+ else if (port_clock > 162000)
+ return 11;
+ else
+ return 15;
+}
+
static int io_buffer_wake_time(const struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
- if (DISPLAY_VER(i915) >= 12)
+ if (DISPLAY_VER(i915) >= 20)
+ return lnl_io_buffer_wake_time(crtc_state->port_clock);
+ else if (DISPLAY_VER(i915) >= 12)
return tgl_io_buffer_wake_time();
else
return skl_io_buffer_wake_time();
--
2.34.1
