[Intel-gfx] [PATCH v5] drm/i915: Initialize dkl_phy spin lock from display code path

[José Roberto de Souza]

drm/i915: Initialize dkl_phy spin lock from display code path

Start moving the initialization of display locks from
i915_driver_early_probe().
Display locks should be initialized from display-only code paths.

It was also agreed that if a variable is only used in one file, it
should be initialized only in that file, so intel_dkl_phy_init() was
added.

v2:
- added intel_display_locks_init()

v3:
- rebased

v4:
- dropped intel_display_locks_init()

v5:
- moved intel_dkl_phy_init() to the beginning of file

Cc: intel-gfx@lists.freedesktop.org
Cc: Rodrigo Vivi <rodrigo.v...@intel.com>
Cc: Ville Syrjälä <ville.syrj...@linux.intel.com>
Cc: Jani Nikula <jani.nik...@intel.com>
Cc: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
Reviewed-by: Lucas De Marchi <lucas.demar...@intel.com>
Signed-off-by: José Roberto de Souza <jose.so...@intel.com>
---
 drivers/gpu/drm/i915/display/intel_display_driver.c | 2 ++
 drivers/gpu/drm/i915/display/intel_dkl_phy.c        | 9 +++++++++
 drivers/gpu/drm/i915/display/intel_dkl_phy.h        | 1 +
 drivers/gpu/drm/i915/i915_driver.c                  | 1 -
 4 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display_driver.c 
b/drivers/gpu/drm/i915/display/intel_display_driver.c
index b3dbfe2a892e6..60ce10fc72058 100644
--- a/drivers/gpu/drm/i915/display/intel_display_driver.c
+++ b/drivers/gpu/drm/i915/display/intel_display_driver.c
@@ -30,6 +30,7 @@
 #include "intel_display_driver.h"
 #include "intel_display_power.h"
 #include "intel_display_types.h"
+#include "intel_dkl_phy.h"
 #include "intel_dmc.h"
 #include "intel_dp.h"
 #include "intel_dpll.h"
@@ -175,6 +176,7 @@ void intel_display_driver_early_probe(struct 
drm_i915_private *i915)
        if (!HAS_DISPLAY(i915))
                return;
 
+       intel_dkl_phy_init(i915);
        intel_color_init_hooks(i915);
        intel_init_cdclk_hooks(i915);
        intel_audio_hooks_init(i915);
diff --git a/drivers/gpu/drm/i915/display/intel_dkl_phy.c 
b/drivers/gpu/drm/i915/display/intel_dkl_phy.c
index 57cc3edba0163..a001232ad445e 100644
--- a/drivers/gpu/drm/i915/display/intel_dkl_phy.c
+++ b/drivers/gpu/drm/i915/display/intel_dkl_phy.c
@@ -11,6 +11,15 @@
 #include "intel_dkl_phy.h"
 #include "intel_dkl_phy_regs.h"
 
+/**
+ * intel_dkl_phy_init - initialize Dekel PHY
+ * @i915: i915 device instance
+ */
+void intel_dkl_phy_init(struct drm_i915_private *i915)
+{
+       spin_lock_init(&i915->display.dkl.phy_lock);
+}
+
 static void
 dkl_phy_set_hip_idx(struct drm_i915_private *i915, struct intel_dkl_phy_reg 
reg)
 {
diff --git a/drivers/gpu/drm/i915/display/intel_dkl_phy.h 
b/drivers/gpu/drm/i915/display/intel_dkl_phy.h
index 570ee36f9386f..5956ec3e940b1 100644
--- a/drivers/gpu/drm/i915/display/intel_dkl_phy.h
+++ b/drivers/gpu/drm/i915/display/intel_dkl_phy.h
@@ -12,6 +12,7 @@
 
 struct drm_i915_private;
 
+void intel_dkl_phy_init(struct drm_i915_private *i915);
 u32
 intel_dkl_phy_read(struct drm_i915_private *i915, struct intel_dkl_phy_reg 
reg);
 void
diff --git a/drivers/gpu/drm/i915/i915_driver.c 
b/drivers/gpu/drm/i915/i915_driver.c
index a52db8a809006..fd198700272b1 100644
--- a/drivers/gpu/drm/i915/i915_driver.c
+++ b/drivers/gpu/drm/i915/i915_driver.c
@@ -223,7 +223,6 @@ static int i915_driver_early_probe(struct drm_i915_private 
*dev_priv)
        mutex_init(&dev_priv->display.wm.wm_mutex);
        mutex_init(&dev_priv->display.pps.mutex);
        mutex_init(&dev_priv->display.hdcp.comp_mutex);
-       spin_lock_init(&dev_priv->display.dkl.phy_lock);
 
        i915_memcpy_init_early(dev_priv);
        intel_runtime_pm_init_early(&dev_priv->runtime_pm);
-- 
2.40.0