[Intel-xe] [PATCH 4/6] drm/i915/display: Apply workarounds during display init

[Matt Roper]

Rather than applying display workarounds as part of
intel_clock_gating_init() (which in turn is confusingly called from
i915_gem_init during device probe), handle them at the point we're
actually initializing the display hardware.  This will also ensure that
these workarounds are properly applied during display initialization on
the Xe driver, which re-uses i915's display code, but does not call
i915's gem init.

Signed-off-by: Matt Roper <matthew.d.roper at intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi at intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230906234732.3728630-10-matthew.d.roper@intel.com
(cherry picked from commit da1bc5cc3b55af2d785c6dd02c3b461f89f51adf)
---
 drivers/gpu/drm/i915/display/intel_display_driver.c | 3 +++
 drivers/gpu/drm/i915/intel_clock_gating.c           | 3 ---
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display_driver.c b/drivers/gpu/drm/i915/display/intel_display_driver.c
index 8f144d4d3c39..9d9b034b9bdc 100644
--- a/drivers/gpu/drm/i915/display/intel_display_driver.c
+++ b/drivers/gpu/drm/i915/display/intel_display_driver.c
@@ -31,6 +31,7 @@
 #include "intel_display_irq.h"
 #include "intel_display_power.h"
 #include "intel_display_types.h"
+#include "intel_display_wa.h"
 #include "intel_dkl_phy.h"
 #include "intel_dmc.h"
 #include "intel_dp.h"
@@ -88,6 +89,8 @@ void intel_display_driver_init_hw(struct drm_i915_private *i915)
 	intel_update_cdclk(i915);
 	intel_cdclk_dump_config(i915, &i915->display.cdclk.hw, "Current CDCLK");
 	cdclk_state->logical = cdclk_state->actual = i915->display.cdclk.hw;
+
+	intel_display_wa_apply(i915);
 }
 
 static const struct drm_mode_config_funcs intel_mode_funcs = {
diff --git a/drivers/gpu/drm/i915/intel_clock_gating.c b/drivers/gpu/drm/i915/intel_clock_gating.c
index abfb6bdbd367..9c21ce69bd98 100644
--- a/drivers/gpu/drm/i915/intel_clock_gating.c
+++ b/drivers/gpu/drm/i915/intel_clock_gating.c
@@ -28,7 +28,6 @@
 #include "display/intel_de.h"
 #include "display/intel_display.h"
 #include "display/intel_display_trace.h"
-#include "display/intel_display_wa.h"
 #include "display/skl_watermark.h"
 
 #include "gt/intel_engine_regs.h"
@@ -750,8 +749,6 @@ static void i830_init_clock_gating(struct drm_i915_private *i915)
 void intel_clock_gating_init(struct drm_i915_private *i915)
 {
 	i915->clock_gating_funcs->init_clock_gating(i915);
-
-	intel_display_wa_apply(i915);
 }
 
 static void nop_init_clock_gating(struct drm_i915_private *i915)
-- 
2.41.0