[Intel-gfx] [PATCH 4/4] DO_NOT_MERGE: drm/i915/display: Enable PSR2 selective fetch by default

[José Roberto de Souza]

Only to execute tests with PSR2 selective fetch enabled and check what
is broken.

IGT tests know to fail with this:
- kms_cursor_legacy: all tests that checks if evasion happend, I have
fix for it making cursor_slowpath() returns true for display 12+.

- kms_psr2_su: The pageflip test, it needs to have the damage clip set
otherwise it will update the whole screen and the selective blocks
will not match with expected.

- kms_psr: psr2_*_(mmap_gtt, mmap_cpu, blt and render), all those
tests should be dropped or skipped for display 12+.

Signed-off-by: José Roberto de Souza <jose.souza at intel.com>
---
 drivers/gpu/drm/i915/display/intel_psr.c | 9 ---------
 drivers/gpu/drm/i915/i915_params.h       | 2 +-
 2 files changed, 1 insertion(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index 894a2d35668a2..e128f0c2aeecc 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -877,15 +877,6 @@ static bool intel_psr2_config_valid(struct intel_dp *intel_dp,
 		return false;
 	}
 
-	/*
-	 * We are missing the implementation of some workarounds to enabled PSR2
-	 * in Alderlake_P, until ready PSR2 should be kept disabled.
-	 */
-	if (IS_ALDERLAKE_P(dev_priv)) {
-		drm_dbg_kms(&dev_priv->drm, "PSR2 is missing the implementation of workarounds\n");
-		return false;
-	}
-
 	if (!transcoder_has_psr2(dev_priv, crtc_state->cpu_transcoder)) {
 		drm_dbg_kms(&dev_priv->drm,
 			    "PSR2 not supported in transcoder %s\n",
diff --git a/drivers/gpu/drm/i915/i915_params.h b/drivers/gpu/drm/i915/i915_params.h
index f27eceb82c0f5..8d725b64592d8 100644
--- a/drivers/gpu/drm/i915/i915_params.h
+++ b/drivers/gpu/drm/i915/i915_params.h
@@ -55,7 +55,7 @@ struct drm_printer;
 	param(int, enable_fbc, -1, 0600) \
 	param(int, enable_psr, -1, 0600) \
 	param(bool, psr_safest_params, false, 0400) \
-	param(bool, enable_psr2_sel_fetch, false, 0400) \
+	param(bool, enable_psr2_sel_fetch, true, 0400) \
 	param(int, disable_power_well, -1, 0400) \
 	param(int, enable_ips, 1, 0600) \
 	param(int, invert_brightness, 0, 0600) \
-- 
2.32.0