The bspec suggests giving cursor planes a fixed allocation of 8
blocks when running in a multi-CRTC configuration. However we
have found that this small allocation can only accommodate level
0 watermarks on many platforms, which in turn prevents the
system from entering deeper sleep states. Let's use a slightly
higher allocation of 16 blocks for the cursor to increase our
chances of enabling lower power states.
Signed-off-by: Radhakrishna Sripada <radhakrishna.srip...@intel.com>
Signed-off-by: Matt Roper <matthew.d.ro...@intel.com>
---
drivers/gpu/drm/i915/intel_pm.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 658a756..a949dac 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -2933,7 +2933,8 @@ static unsigned int skl_cursor_allocation(int num_active)
if (num_active == 1)
return 32;
- return 8;
+ /* higher than bspec recommendation (8) */
+ return 16;
}
static void skl_ddb_entry_init_from_hw(struct skl_ddb_entry *entry, u32 reg)
--
1.9.1
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