[PATCH v3 00/11] drm/i915: Add support for asynchronous display power disabling

[PATCH v3 00/11] drm/i915: Add support for asynchronous display power disabling

[Imre Deak]

This is v3 of [1] addressing the comments from Chris and Ville and
fixing some checkpatch errors.

[1] https://patchwork.freedesktop.org/series/60242/

Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: José Roberto de Souza <jose.souza@intel.com>

Imre Deak (11):
  drm/i915: Add support for tracking wakerefs w/o power-on guarantee
  drm/i915: Force printing wakeref tacking during pm_cleanup
  drm/i915: Verify power domains state during suspend in all cases
  drm/i915: Add support for asynchronous display power disabling
  drm/i915: Disable power asynchronously during DP AUX transfers
  drm/i915: WARN for eDP encoders in intel_dp_detect_dpcd()
  drm/i915: Remove the unneeded AUX power ref from intel_dp_detect()
  drm/i915: Remove the unneeded AUX power ref from intel_dp_hpd_pulse()
  drm/i915: Replace use of PLLS power domain with DISPLAY_CORE domain
  drm/i915: Avoid taking the PPS lock for non-eDP/VLV/CHV
  drm/i915: Assert that TypeC ports are not used for eDP

 drivers/gpu/drm/i915/i915_drv.h         |   5 +
 drivers/gpu/drm/i915/i915_utils.h       |   4 +-
 drivers/gpu/drm/i915/intel_display.c    |   2 +-
 drivers/gpu/drm/i915/intel_display.h    |   2 +-
 drivers/gpu/drm/i915/intel_dp.c         |  83 ++--
 drivers/gpu/drm/i915/intel_dpll_mgr.c   |  36 +-
 drivers/gpu/drm/i915/intel_drv.h        |  52 ++-
 drivers/gpu/drm/i915/intel_runtime_pm.c | 598 +++++++++++++++++++++---
 drivers/gpu/drm/i915/intel_runtime_pm.h |  13 +
 9 files changed, 663 insertions(+), 132 deletions(-)

-- 
2.17.1

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[PATCH v3 01/11] drm/i915: Add support for tracking wakerefs w/o power-on guarantee

[Imre Deak]

It's useful to track runtime PM refs that don't guarantee a device
power-on state to the rest of the driver. One such case is holding a
reference that will be put asynchronously, during which normal users
without their own reference shouldn't access the HW. A follow-up patch
will add support for disabling display power domains asynchronously
which needs this.

For this we can split wakeref_count into a low half-word tracking
all references (raw-wakerefs) and a high half-word tracking
references guaranteeing a power-on state (wakelocks).

Follow-up patches will make use of the API added here.

While at it add the missing docbook header for the unchecked
display-power and runtime_pm put functions.

No functional changes, except for printing leaked raw-wakerefs
and wakelocks separately in intel_runtime_pm_cleanup().

v2:
- Track raw wakerefs/wakelocks in the low/high half-word of
  wakeref_count, instead of adding a new counter. (Chris)
v3:
- Add a struct_member(T, m) helper instead of open-coding it. (Chris)
- Checkpatch indentation formatting fix.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/i915_utils.h       |   4 +-
 drivers/gpu/drm/i915/intel_drv.h        |  52 +++++++-
 drivers/gpu/drm/i915/intel_runtime_pm.c | 152 ++++++++++++++++++------
 3 files changed, 164 insertions(+), 44 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_utils.h b/drivers/gpu/drm/i915/i915_utils.h
index c849cfa7cb28..5c94c7ab4607 100644
--- a/drivers/gpu/drm/i915/i915_utils.h
+++ b/drivers/gpu/drm/i915/i915_utils.h
@@ -102,6 +102,8 @@
 #define page_pack_bits(ptr, bits) ptr_pack_bits(ptr, bits, PAGE_SHIFT)
 #define page_unpack_bits(ptr, bits) ptr_unpack_bits(ptr, bits, PAGE_SHIFT)
 
+#define struct_member(T, member) (((T *)0)->member)
+
 #define ptr_offset(ptr, member) offsetof(typeof(*(ptr)), member)
 
 #define fetch_and_zero(ptr) ({						\
@@ -118,7 +120,7 @@
  */
 #define container_of_user(ptr, type, member) ({				\
 	void __user *__mptr = (void __user *)(ptr);			\
-	BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) &&	\
+	BUILD_BUG_ON_MSG(!__same_type(*(ptr), struct_member(type, member)) && \
 			 !__same_type(*(ptr), void),			\
 			 "pointer type mismatch in container_of()");	\
 	((type __user *)(__mptr - offsetof(type, member))); })
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 247893ed1543..5ad1256b2065 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1619,6 +1619,24 @@ unsigned int i9xx_plane_max_stride(struct intel_plane *plane,
 				   unsigned int rotation);
 
 /* intel_runtime_pm.c */
+#define BITS_PER_WAKEREF	\
+	BITS_PER_TYPE(struct_member(struct i915_runtime_pm, wakeref_count))
+#define INTEL_RPM_WAKELOCK_SHIFT	(BITS_PER_WAKEREF / 2)
+#define INTEL_RPM_WAKELOCK_BIAS		(1 << INTEL_RPM_WAKELOCK_SHIFT)
+#define INTEL_RPM_RAW_WAKEREF_MASK	(INTEL_RPM_WAKELOCK_BIAS - 1)
+
+static inline int
+intel_rpm_raw_wakeref_count(int wakeref_count)
+{
+	return wakeref_count & INTEL_RPM_RAW_WAKEREF_MASK;
+}
+
+static inline int
+intel_rpm_wakelock_count(int wakeref_count)
+{
+	return wakeref_count >> INTEL_RPM_WAKELOCK_SHIFT;
+}
+
 static inline void
 assert_rpm_device_not_suspended(struct i915_runtime_pm *rpm)
 {
@@ -1627,11 +1645,33 @@ assert_rpm_device_not_suspended(struct i915_runtime_pm *rpm)
 }
 
 static inline void
-__assert_rpm_wakelock_held(struct i915_runtime_pm *rpm)
+____assert_rpm_raw_wakeref_held(struct i915_runtime_pm *rpm, int wakeref_count)
 {
 	assert_rpm_device_not_suspended(rpm);
-	WARN_ONCE(!atomic_read(&rpm->wakeref_count),
-		  "RPM wakelock ref not held during HW access");
+	WARN_ONCE(!intel_rpm_raw_wakeref_count(wakeref_count),
+		  "RPM raw-wakeref not held\n");
+}
+
+static inline void
+____assert_rpm_wakelock_held(struct i915_runtime_pm *rpm, int wakeref_count)
+{
+	____assert_rpm_raw_wakeref_held(rpm, wakeref_count);
+	WARN_ONCE(!intel_rpm_wakelock_count(wakeref_count),
+		  "RPM wakelock ref not held during HW access\n");
+}
+
+static inline void
+assert_rpm_raw_wakeref_held(struct drm_i915_private *i915)
+{
+	struct i915_runtime_pm *rpm = &i915->runtime_pm;
+
+	____assert_rpm_raw_wakeref_held(rpm, atomic_read(&rpm->wakeref_count));
+}
+
+static inline void
+__assert_rpm_wakelock_held(struct i915_runtime_pm *rpm)
+{
+	____assert_rpm_wakelock_held(rpm, atomic_read(&rpm->wakeref_count));
 }
 
 static inline void
@@ -1661,7 +1701,8 @@ assert_rpm_wakelock_held(struct drm_i915_private *i915)
 static inline void
 disable_rpm_wakeref_asserts(struct drm_i915_private *i915)
 {
-	atomic_inc(&i915->runtime_pm.wakeref_count);
+	atomic_add(INTEL_RPM_WAKELOCK_BIAS + 1,
+		   &i915->runtime_pm.wakeref_count);
 }
 
 /**
@@ -1678,7 +1719,8 @@ disable_rpm_wakeref_asserts(struct drm_i915_private *i915)
 static inline void
 enable_rpm_wakeref_asserts(struct drm_i915_private *i915)
 {
-	atomic_dec(&i915->runtime_pm.wakeref_count);
+	atomic_sub(INTEL_RPM_WAKELOCK_BIAS + 1,
+		   &i915->runtime_pm.wakeref_count);
 }
 
 #endif /* __INTEL_DRV_H__ */
diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
index b8fadd1b685c..53a172094c6a 100644
--- a/drivers/gpu/drm/i915/intel_runtime_pm.c
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
@@ -110,9 +110,6 @@ track_intel_runtime_pm_wakeref(struct drm_i915_private *i915)
 	depot_stack_handle_t stack, *stacks;
 	unsigned long flags;
 
-	atomic_inc(&rpm->wakeref_count);
-	assert_rpm_wakelock_held(i915);
-
 	if (!HAS_RUNTIME_PM(i915))
 		return -1;
 
@@ -140,8 +137,8 @@ track_intel_runtime_pm_wakeref(struct drm_i915_private *i915)
 	return stack;
 }
 
-static void cancel_intel_runtime_pm_wakeref(struct drm_i915_private *i915,
-					    depot_stack_handle_t stack)
+static void untrack_intel_runtime_pm_wakeref(struct drm_i915_private *i915,
+					     depot_stack_handle_t stack)
 {
 	struct i915_runtime_pm *rpm = &i915->runtime_pm;
 	unsigned long flags, n;
@@ -236,14 +233,13 @@ __print_intel_runtime_pm_wakeref(struct drm_printer *p,
 }
 
 static noinline void
-untrack_intel_runtime_pm_wakeref(struct drm_i915_private *i915)
+__intel_wakeref_dec_and_check_tracking(struct drm_i915_private *i915)
 {
 	struct i915_runtime_pm *rpm = &i915->runtime_pm;
 	struct intel_runtime_pm_debug dbg = {};
 	struct drm_printer p;
 	unsigned long flags;
 
-	assert_rpm_wakelock_held(i915);
 	if (atomic_dec_and_lock_irqsave(&rpm->wakeref_count,
 					&rpm->debug.lock,
 					flags)) {
@@ -311,19 +307,51 @@ static void init_intel_runtime_pm_wakeref(struct drm_i915_private *i915)
 static depot_stack_handle_t
 track_intel_runtime_pm_wakeref(struct drm_i915_private *i915)
 {
-	atomic_inc(&i915->runtime_pm.wakeref_count);
-	assert_rpm_wakelock_held(i915);
 	return -1;
 }
 
-static void untrack_intel_runtime_pm_wakeref(struct drm_i915_private *i915)
+static void untrack_intel_runtime_pm_wakeref(struct drm_i915_private *i915,
+					     intel_wakeref_t wref)
+{
+}
+
+static void
+__intel_wakeref_dec_and_check_tracking(struct drm_i915_private *i915)
 {
-	assert_rpm_wakelock_held(i915);
 	atomic_dec(&i915->runtime_pm.wakeref_count);
 }
 
 #endif
 
+static void
+intel_runtime_pm_acquire(struct drm_i915_private *i915, bool wakelock)
+{
+	struct i915_runtime_pm *rpm = &i915->runtime_pm;
+
+	if (wakelock) {
+		atomic_add(1 + INTEL_RPM_WAKELOCK_BIAS, &rpm->wakeref_count);
+		assert_rpm_wakelock_held(i915);
+	} else {
+		atomic_inc(&rpm->wakeref_count);
+		assert_rpm_raw_wakeref_held(i915);
+	}
+}
+
+static void
+intel_runtime_pm_release(struct drm_i915_private *i915, int wakelock)
+{
+	struct i915_runtime_pm *rpm = &i915->runtime_pm;
+
+	if (wakelock) {
+		assert_rpm_wakelock_held(i915);
+		atomic_sub(INTEL_RPM_WAKELOCK_BIAS, &rpm->wakeref_count);
+	} else {
+		assert_rpm_raw_wakeref_held(i915);
+	}
+
+	__intel_wakeref_dec_and_check_tracking(i915);
+}
+
 bool intel_display_power_well_is_enabled(struct drm_i915_private *dev_priv,
 					 enum i915_power_well_id power_well_id);
 
@@ -1946,13 +1974,17 @@ static void __intel_display_power_put(struct drm_i915_private *dev_priv,
 }
 
 /**
- * intel_display_power_put - release a power domain reference
+ * intel_display_power_put_unchecked - release an unchecked power domain reference
  * @dev_priv: i915 device instance
  * @domain: power domain to reference
  *
  * This function drops the power domain reference obtained by
  * intel_display_power_get() and might power down the corresponding hardware
  * block right away if this is the last reference.
+ *
+ * This function exists only for historical reasons and should be avoided in
+ * new code, as the correctness of its use cannot be checked. Always use
+ * intel_display_power_put() instead.
  */
 void intel_display_power_put_unchecked(struct drm_i915_private *dev_priv,
 				       enum intel_display_power_domain domain)
@@ -1962,6 +1994,16 @@ void intel_display_power_put_unchecked(struct drm_i915_private *dev_priv,
 }
 
 #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
+/**
+ * intel_display_power_put - release a power domain reference
+ * @dev_priv: i915 device instance
+ * @domain: power domain to reference
+ * @wakeref: wakeref acquired for the reference that is being released
+ *
+ * This function drops the power domain reference obtained by
+ * intel_display_power_get() and might power down the corresponding hardware
+ * block right away if this is the last reference.
+ */
 void intel_display_power_put(struct drm_i915_private *dev_priv,
 			     enum intel_display_power_domain domain,
 			     intel_wakeref_t wakeref)
@@ -4579,19 +4621,8 @@ static void intel_power_domains_verify_state(struct drm_i915_private *i915)
 
 #endif
 
-/**
- * intel_runtime_pm_get - grab a runtime pm reference
- * @i915: i915 device instance
- *
- * This function grabs a device-level runtime pm reference (mostly used for GEM
- * code to ensure the GTT or GT is on) and ensures that it is powered up.
- *
- * Any runtime pm reference obtained by this function must have a symmetric
- * call to intel_runtime_pm_put() to release the reference again.
- *
- * Returns: the wakeref cookie to pass to intel_runtime_pm_put()
- */
-intel_wakeref_t intel_runtime_pm_get(struct drm_i915_private *i915)
+static intel_wakeref_t __intel_runtime_pm_get(struct drm_i915_private *i915,
+					      bool wakelock)
 {
 	struct pci_dev *pdev = i915->drm.pdev;
 	struct device *kdev = &pdev->dev;
@@ -4600,9 +4631,28 @@ intel_wakeref_t intel_runtime_pm_get(struct drm_i915_private *i915)
 	ret = pm_runtime_get_sync(kdev);
 	WARN_ONCE(ret < 0, "pm_runtime_get_sync() failed: %d\n", ret);
 
+	intel_runtime_pm_acquire(i915, wakelock);
+
 	return track_intel_runtime_pm_wakeref(i915);
 }
 
+/**
+ * intel_runtime_pm_get - grab a runtime pm reference
+ * @i915: i915 device instance
+ *
+ * This function grabs a device-level runtime pm reference (mostly used for GEM
+ * code to ensure the GTT or GT is on) and ensures that it is powered up.
+ *
+ * Any runtime pm reference obtained by this function must have a symmetric
+ * call to intel_runtime_pm_put() to release the reference again.
+ *
+ * Returns: the wakeref cookie to pass to intel_runtime_pm_put()
+ */
+intel_wakeref_t intel_runtime_pm_get(struct drm_i915_private *i915)
+{
+	return __intel_runtime_pm_get(i915, true);
+}
+
 /**
  * intel_runtime_pm_get_if_in_use - grab a runtime pm reference if device in use
  * @i915: i915 device instance
@@ -4633,6 +4683,8 @@ intel_wakeref_t intel_runtime_pm_get_if_in_use(struct drm_i915_private *i915)
 			return 0;
 	}
 
+	intel_runtime_pm_acquire(i915, true);
+
 	return track_intel_runtime_pm_wakeref(i915);
 }
 
@@ -4663,33 +4715,56 @@ intel_wakeref_t intel_runtime_pm_get_noresume(struct drm_i915_private *i915)
 	assert_rpm_wakelock_held(i915);
 	pm_runtime_get_noresume(kdev);
 
+	intel_runtime_pm_acquire(i915, true);
+
 	return track_intel_runtime_pm_wakeref(i915);
 }
 
+static void __intel_runtime_pm_put(struct drm_i915_private *i915,
+				   intel_wakeref_t wref,
+				   bool wakelock)
+{
+	struct pci_dev *pdev = i915->drm.pdev;
+	struct device *kdev = &pdev->dev;
+
+	untrack_intel_runtime_pm_wakeref(i915, wref);
+
+	intel_runtime_pm_release(i915, wakelock);
+
+	pm_runtime_mark_last_busy(kdev);
+	pm_runtime_put_autosuspend(kdev);
+}
+
 /**
- * intel_runtime_pm_put - release a runtime pm reference
+ * intel_runtime_pm_put_unchecked - release an unchecked runtime pm reference
  * @i915: i915 device instance
  *
  * This function drops the device-level runtime pm reference obtained by
  * intel_runtime_pm_get() and might power down the corresponding
  * hardware block right away if this is the last reference.
+ *
+ * This function exists only for historical reasons and should be avoided in
+ * new code, as the correctness of its use cannot be checked. Always use
+ * intel_runtime_pm_put() instead.
  */
 void intel_runtime_pm_put_unchecked(struct drm_i915_private *i915)
 {
-	struct pci_dev *pdev = i915->drm.pdev;
-	struct device *kdev = &pdev->dev;
-
-	untrack_intel_runtime_pm_wakeref(i915);
-
-	pm_runtime_mark_last_busy(kdev);
-	pm_runtime_put_autosuspend(kdev);
+	__intel_runtime_pm_put(i915, -1, true);
 }
 
 #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
+/**
+ * intel_runtime_pm_put - release a runtime pm reference
+ * @i915: i915 device instance
+ * @wref: wakeref acquired for the reference that is being released
+ *
+ * This function drops the device-level runtime pm reference obtained by
+ * intel_runtime_pm_get() and might power down the corresponding
+ * hardware block right away if this is the last reference.
+ */
 void intel_runtime_pm_put(struct drm_i915_private *i915, intel_wakeref_t wref)
 {
-	cancel_intel_runtime_pm_wakeref(i915, wref);
-	intel_runtime_pm_put_unchecked(i915);
+	__intel_runtime_pm_put(i915, wref, true);
 }
 #endif
 
@@ -4767,10 +4842,11 @@ void intel_runtime_pm_cleanup(struct drm_i915_private *i915)
 
 	count = atomic_fetch_inc(&rpm->wakeref_count); /* balance untrack */
 	WARN(count,
-	     "i915->runtime_pm.wakeref_count=%d on cleanup\n",
-	     count);
+	     "i915 raw-wakerefs=%d wakelocks=%d on cleanup\n",
+	     intel_rpm_raw_wakeref_count(count),
+	     intel_rpm_wakelock_count(count));
 
-	untrack_intel_runtime_pm_wakeref(i915);
+	intel_runtime_pm_release(i915, false);
 }
 
 void intel_runtime_pm_init_early(struct drm_i915_private *i915)
-- 
2.17.1

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[PATCH v3 02/11] drm/i915: Force printing wakeref tacking during pm_cleanup

[Imre Deak]

Make sure we print and drop the wakeref tracking info during pm_cleanup
even if there are wakeref holders (either raw-wakeref or wakelock
holders). Dropping the wakeref tracking means that a late put on the ref
will WARN since the wakeref will be unknown, but that is rightly so,
since the put is late and we want to catch that case.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/intel_runtime_pm.c | 75 ++++++++++++++++++-------
 1 file changed, 54 insertions(+), 21 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
index 53a172094c6a..18152978375a 100644
--- a/drivers/gpu/drm/i915/intel_runtime_pm.c
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
@@ -233,31 +233,60 @@ __print_intel_runtime_pm_wakeref(struct drm_printer *p,
 }
 
 static noinline void
-__intel_wakeref_dec_and_check_tracking(struct drm_i915_private *i915)
+__untrack_all_wakerefs(struct intel_runtime_pm_debug *debug,
+		       struct intel_runtime_pm_debug *saved)
+{
+	*saved = *debug;
+
+	debug->owners = NULL;
+	debug->count = 0;
+	debug->last_release = __save_depot_stack();
+}
+
+static void
+dump_and_free_wakeref_tracking(struct intel_runtime_pm_debug *debug)
 {
-	struct i915_runtime_pm *rpm = &i915->runtime_pm;
-	struct intel_runtime_pm_debug dbg = {};
 	struct drm_printer p;
-	unsigned long flags;
 
-	if (atomic_dec_and_lock_irqsave(&rpm->wakeref_count,
-					&rpm->debug.lock,
-					flags)) {
-		dbg = rpm->debug;
-
-		rpm->debug.owners = NULL;
-		rpm->debug.count = 0;
-		rpm->debug.last_release = __save_depot_stack();
-
-		spin_unlock_irqrestore(&rpm->debug.lock, flags);
-	}
-	if (!dbg.count)
+	if (!debug->count)
 		return;
 
 	p = drm_debug_printer("i915");
-	__print_intel_runtime_pm_wakeref(&p, &dbg);
+	__print_intel_runtime_pm_wakeref(&p, debug);
 
-	kfree(dbg.owners);
+	kfree(debug->owners);
+}
+
+static noinline void
+__intel_wakeref_dec_and_check_tracking(struct drm_i915_private *i915)
+{
+	struct i915_runtime_pm *rpm = &i915->runtime_pm;
+	struct intel_runtime_pm_debug dbg = {};
+	unsigned long flags;
+
+	if (!atomic_dec_and_lock_irqsave(&rpm->wakeref_count,
+					 &rpm->debug.lock,
+					 flags))
+		return;
+
+	__untrack_all_wakerefs(&rpm->debug, &dbg);
+	spin_unlock_irqrestore(&rpm->debug.lock, flags);
+
+	dump_and_free_wakeref_tracking(&dbg);
+}
+
+static noinline void
+untrack_all_intel_runtime_pm_wakerefs(struct drm_i915_private *i915)
+{
+	struct i915_runtime_pm *rpm = &i915->runtime_pm;
+	struct intel_runtime_pm_debug dbg = {};
+	unsigned long flags;
+
+	spin_lock_irqsave(&rpm->debug.lock, flags);
+	__untrack_all_wakerefs(&rpm->debug, &dbg);
+	spin_unlock_irqrestore(&rpm->debug.lock, flags);
+
+	dump_and_free_wakeref_tracking(&dbg);
 }
 
 void print_intel_runtime_pm_wakeref(struct drm_i915_private *i915,
@@ -321,6 +350,11 @@ __intel_wakeref_dec_and_check_tracking(struct drm_i915_private *i915)
 	atomic_dec(&i915->runtime_pm.wakeref_count);
 }
 
+static void
+untrack_all_intel_runtime_pm_wakerefs(struct drm_i915_private *i915)
+{
+}
+
 #endif
 
 static void
@@ -4838,15 +4872,14 @@ void intel_runtime_pm_disable(struct drm_i915_private *i915)
 void intel_runtime_pm_cleanup(struct drm_i915_private *i915)
 {
 	struct i915_runtime_pm *rpm = &i915->runtime_pm;
-	int count;
+	int count = atomic_read(&rpm->wakeref_count);
 
-	count = atomic_fetch_inc(&rpm->wakeref_count); /* balance untrack */
 	WARN(count,
 	     "i915 raw-wakerefs=%d wakelocks=%d on cleanup\n",
 	     intel_rpm_raw_wakeref_count(count),
 	     intel_rpm_wakelock_count(count));
 
-	intel_runtime_pm_release(i915, false);
+	untrack_all_intel_runtime_pm_wakerefs(i915);
 }
 
 void intel_runtime_pm_init_early(struct drm_i915_private *i915)
-- 
2.17.1

_______________________________________________
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https://lists.freedesktop.org/mailman/listinfo/intel-gfx

[PATCH v3 03/11] drm/i915: Verify power domains state during suspend in all cases

[Imre Deak]

There is no reason why we couldn't verify the power domains state during
suspend in all cases, so do that. I overlooked this when originally
adding the check.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/intel_runtime_pm.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
index 18152978375a..2cf4943df2e7 100644
--- a/drivers/gpu/drm/i915/intel_runtime_pm.c
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
@@ -4528,10 +4528,10 @@ void intel_power_domains_suspend(struct drm_i915_private *i915,
 	 * Even if power well support was disabled we still want to disable
 	 * power wells if power domains must be deinitialized for suspend.
 	 */
-	if (!i915_modparams.disable_power_well) {
+	if (!i915_modparams.disable_power_well)
 		intel_display_power_put_unchecked(i915, POWER_DOMAIN_INIT);
-		intel_power_domains_verify_state(i915);
-	}
+
+	intel_power_domains_verify_state(i915);
 
 	if (INTEL_GEN(i915) >= 11)
 		icl_display_core_uninit(i915);
-- 
2.17.1

_______________________________________________
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[PATCH v3 04/11] drm/i915: Add support for asynchronous display power disabling

[Imre Deak]

By disabling a power domain asynchronously we can restrict holding a
reference on that power domain to the actual code sequence that
requires the power to be on for the HW access it's doing, by also
avoiding unneeded on-off-on togglings of the power domain (since the
disabling happens with a delay).

One benefit is potential power saving due to the following two reasons:
1. The fact that we will now be holding the reference only for the
   necessary duration by the end of the patchset. While simply not
   delaying the disabling has the same benefit, it has the problem that
   frequent on-off-on power switching has its own power cost (see the 2.
   point below) and the debug trace for power well on/off events will
   cause a lot of dmesg spam (see details about this further below).
2. Avoiding the power cost of freuqent on-off-on power switching. This
   requires us to find the optimal disabling delay based on the measured
   power cost of on->off and off->on switching of each power well vs.
   the power of keeping the given power well on.

   In this patchset I'm not providing this optimal delay for two
   reasons:
   a) I don't have the means yet to perform the measurement (with high
      enough signal-to-noise ratio, or with the help of an energy
      counter that takes switching into account). I'm currently looking
      for a way to measure this.

   b) Before reducing the disabling delay we need an alternative way for
      debug tracing powerwell on/off events. Simply avoiding/throttling
      the debug messages is not a solution, see further below.

   Note that even in the case where we can't measure any considerable
   power cost of frequent on-off switching of powerwells, it still would
   make sense to do the disabling asynchronously (with 0 delay) to avoid
   blocking on the disabling. On VLV I measured this disabling time
   overhead to be 1ms on average with a worst case of 4ms.

In the case of the AUX power domains on ICL we would also need to keep
the sequence where we hold the power reference short, the way it would
be by the end of this patchset where we hold it only for the actual AUX
transfer. Anything else would make the locking we need for ICL TypeC
ports (whenever we hold a reference on any AUX power domain) rather
problematic, adding for instance unnecessary lockdep dependencies to
the required TypeC port lock.

I chose the disabling delay to be 100msec for now to avoid the unneeded
toggling (and so not to introduce dmesg spamming) in the DP MST sideband
signaling code. We could optimize this delay later, once we have the
means to measure the switching power cost (see above).

Note that simply removing/throttling the debug tracing for power well
on/off events is not a solution. We need to know the exact spots of
these events and cannot rely only on incorrect register accesses caught
(due to not holding a wakeref at the time of access). Incorrect
powerwell enabling/disabling could lead to other problems, for instance
we need to keep certain powerwells enabled for the duration of modesets
and AUX transfers.

v2:
- Clarify the commit log parts about power cost measurement and the
  problem of simply removing/throttling debug tracing. (Chris)
- Optimize out local wakeref vars at intel_runtime_pm_put_raw() and
  intel_display_power_put_async() call sites if
  CONFIG_DRM_I915_DEBUG_RUNTIME_PM=n. (Chris)
- Rebased on v2 of the wakeref w/o power-on guarantee patch.
- Add missing docbook headers.
v3:
- Checkpatch spelling/missing-empty-line fix.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/i915_drv.h         |   5 +
 drivers/gpu/drm/i915/intel_runtime_pm.c | 363 +++++++++++++++++++++++-
 drivers/gpu/drm/i915/intel_runtime_pm.h |   8 +
 3 files changed, 369 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index d0257808734c..5801f5407589 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -834,6 +834,11 @@ struct i915_power_domains {
 
 	struct mutex lock;
 	int domain_use_count[POWER_DOMAIN_NUM];
+
+	struct delayed_work async_put_work;
+	intel_wakeref_t async_put_wakeref;
+	u64 async_put_domains[2];
+
 	struct i915_power_well *power_wells;
 };
 
diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
index 2cf4943df2e7..2ed6fb33856a 100644
--- a/drivers/gpu/drm/i915/intel_runtime_pm.c
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
@@ -60,6 +60,19 @@
  * present for a given platform.
  */
 
+static intel_wakeref_t intel_runtime_pm_get_raw(struct drm_i915_private *i915);
+static void
+__intel_runtime_pm_put(struct drm_i915_private *i915, intel_wakeref_t wref,
+		       bool wakelock);
+
+#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
+static void
+intel_runtime_pm_put_raw(struct drm_i915_private *i915, intel_wakeref_t wref);
+#else
+#define intel_runtime_pm_put_raw(i915, wref) \
+	__intel_runtime_pm_put(i915, -1, false)
+#endif
+
 #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
 
 #include <linux/sort.h>
@@ -1903,6 +1916,125 @@ static void chv_pipe_power_well_disable(struct drm_i915_private *dev_priv,
 	chv_set_pipe_power_well(dev_priv, power_well, false);
 }
 
+static u64 __async_put_domains_mask(struct i915_power_domains *power_domains)
+{
+	return power_domains->async_put_domains[0] |
+	       power_domains->async_put_domains[1];
+}
+
+#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
+
+static bool
+assert_async_put_domain_masks_disjoint(struct i915_power_domains *power_domains)
+{
+	return !WARN_ON(power_domains->async_put_domains[0] &
+			power_domains->async_put_domains[1]);
+}
+
+static bool
+__async_put_domains_state_ok(struct i915_power_domains *power_domains)
+{
+	enum intel_display_power_domain domain;
+	bool err = false;
+
+	err |= !assert_async_put_domain_masks_disjoint(power_domains);
+	err |= WARN_ON(!!power_domains->async_put_wakeref !=
+		       !!__async_put_domains_mask(power_domains));
+
+	for_each_power_domain(domain, __async_put_domains_mask(power_domains))
+		err |= WARN_ON(power_domains->domain_use_count[domain] != 1);
+
+	return !err;
+}
+
+static void print_power_domains(struct i915_power_domains *power_domains,
+				const char *prefix, u64 mask)
+{
+	enum intel_display_power_domain domain;
+
+	DRM_DEBUG_DRIVER("%s (%lu):\n", prefix, hweight64(mask));
+	for_each_power_domain(domain, mask)
+		DRM_DEBUG_DRIVER("%s use_count %d\n",
+				 intel_display_power_domain_str(domain),
+				 power_domains->domain_use_count[domain]);
+}
+
+static void
+print_async_put_domains_state(struct i915_power_domains *power_domains)
+{
+	DRM_DEBUG_DRIVER("async_put_wakeref %u\n",
+			 power_domains->async_put_wakeref);
+
+	print_power_domains(power_domains, "async_put_domains[0]",
+			    power_domains->async_put_domains[0]);
+	print_power_domains(power_domains, "async_put_domains[1]",
+			    power_domains->async_put_domains[1]);
+}
+
+static void
+verify_async_put_domains_state(struct i915_power_domains *power_domains)
+{
+	if (!__async_put_domains_state_ok(power_domains))
+		print_async_put_domains_state(power_domains);
+}
+
+#else
+
+static void
+assert_async_put_domain_masks_disjoint(struct i915_power_domains *power_domains)
+{
+}
+
+static void
+verify_async_put_domains_state(struct i915_power_domains *power_domains)
+{
+}
+
+#endif /* CONFIG_DRM_I915_DEBUG_RUNTIME_PM */
+
+static u64 async_put_domains_mask(struct i915_power_domains *power_domains)
+{
+	assert_async_put_domain_masks_disjoint(power_domains);
+
+	return __async_put_domains_mask(power_domains);
+}
+
+static void
+async_put_domains_clear_domain(struct i915_power_domains *power_domains,
+			       enum intel_display_power_domain domain)
+{
+	assert_async_put_domain_masks_disjoint(power_domains);
+
+	power_domains->async_put_domains[0] &= ~BIT_ULL(domain);
+	power_domains->async_put_domains[1] &= ~BIT_ULL(domain);
+}
+
+static bool
+intel_display_power_grab_async_put_ref(struct drm_i915_private *dev_priv,
+				       enum intel_display_power_domain domain)
+{
+	struct i915_power_domains *power_domains = &dev_priv->power_domains;
+	bool ret = false;
+
+	if (!(async_put_domains_mask(power_domains) & BIT_ULL(domain)))
+		goto out_verify;
+
+	async_put_domains_clear_domain(power_domains, domain);
+
+	ret = true;
+
+	if (async_put_domains_mask(power_domains))
+		goto out_verify;
+
+	cancel_delayed_work(&power_domains->async_put_work);
+	intel_runtime_pm_put_raw(dev_priv,
+				 fetch_and_zero(&power_domains->async_put_wakeref));
+out_verify:
+	verify_async_put_domains_state(power_domains);
+
+	return ret;
+}
+
 static void
 __intel_display_power_get_domain(struct drm_i915_private *dev_priv,
 				 enum intel_display_power_domain domain)
@@ -1910,6 +2042,9 @@ __intel_display_power_get_domain(struct drm_i915_private *dev_priv,
 	struct i915_power_domains *power_domains = &dev_priv->power_domains;
 	struct i915_power_well *power_well;
 
+	if (intel_display_power_grab_async_put_ref(dev_priv, domain))
+		return;
+
 	for_each_power_domain_well(dev_priv, power_well, BIT_ULL(domain))
 		intel_power_well_get(dev_priv, power_well);
 
@@ -1935,9 +2070,7 @@ intel_wakeref_t intel_display_power_get(struct drm_i915_private *dev_priv,
 	intel_wakeref_t wakeref = intel_runtime_pm_get(dev_priv);
 
 	mutex_lock(&power_domains->lock);
-
 	__intel_display_power_get_domain(dev_priv, domain);
-
 	mutex_unlock(&power_domains->lock);
 
 	return wakeref;
@@ -1986,24 +2119,36 @@ intel_display_power_get_if_enabled(struct drm_i915_private *dev_priv,
 	return wakeref;
 }
 
-static void __intel_display_power_put(struct drm_i915_private *dev_priv,
-				      enum intel_display_power_domain domain)
+static void
+__intel_display_power_put_domain(struct drm_i915_private *dev_priv,
+				 enum intel_display_power_domain domain)
 {
 	struct i915_power_domains *power_domains;
 	struct i915_power_well *power_well;
+	const char *name = intel_display_power_domain_str(domain);
 
 	power_domains = &dev_priv->power_domains;
 
-	mutex_lock(&power_domains->lock);
-
 	WARN(!power_domains->domain_use_count[domain],
 	     "Use count on domain %s is already zero\n",
-	     intel_display_power_domain_str(domain));
+	     name);
+	WARN(async_put_domains_mask(power_domains) & BIT_ULL(domain),
+	     "Async disabling of domain %s is pending\n",
+	     name);
+
 	power_domains->domain_use_count[domain]--;
 
 	for_each_power_domain_well_reverse(dev_priv, power_well, BIT_ULL(domain))
 		intel_power_well_put(dev_priv, power_well);
+}
 
+static void __intel_display_power_put(struct drm_i915_private *dev_priv,
+				      enum intel_display_power_domain domain)
+{
+	struct i915_power_domains *power_domains = &dev_priv->power_domains;
+
+	mutex_lock(&power_domains->lock);
+	__intel_display_power_put_domain(dev_priv, domain);
 	mutex_unlock(&power_domains->lock);
 }
 
@@ -2027,6 +2172,188 @@ void intel_display_power_put_unchecked(struct drm_i915_private *dev_priv,
 	intel_runtime_pm_put_unchecked(dev_priv);
 }
 
+static void
+queue_async_put_domains_work(struct i915_power_domains *power_domains,
+			     intel_wakeref_t wakeref)
+{
+	WARN_ON(power_domains->async_put_wakeref);
+	power_domains->async_put_wakeref = wakeref;
+	WARN_ON(!queue_delayed_work(system_unbound_wq,
+				    &power_domains->async_put_work,
+				    msecs_to_jiffies(100)));
+}
+
+static void
+release_async_put_domains(struct i915_power_domains *power_domains, u64 mask)
+{
+	struct drm_i915_private *dev_priv =
+		container_of(power_domains, struct drm_i915_private,
+			     power_domains);
+	enum intel_display_power_domain domain;
+	intel_wakeref_t wakeref;
+
+	/*
+	 * The caller must hold already raw wakeref, upgrade that to a proper
+	 * wakeref to make the state checker happy about the HW access during
+	 * power well disabling.
+	 */
+	assert_rpm_raw_wakeref_held(dev_priv);
+	wakeref = intel_runtime_pm_get(dev_priv);
+
+	for_each_power_domain(domain, mask) {
+		/* Clear before put, so put's sanity check is happy. */
+		async_put_domains_clear_domain(power_domains, domain);
+		__intel_display_power_put_domain(dev_priv, domain);
+	}
+
+	intel_runtime_pm_put(dev_priv, wakeref);
+}
+
+static void
+intel_display_power_put_async_work(struct work_struct *work)
+{
+	struct drm_i915_private *dev_priv =
+		container_of(work, struct drm_i915_private,
+			     power_domains.async_put_work.work);
+	struct i915_power_domains *power_domains = &dev_priv->power_domains;
+	intel_wakeref_t new_work_wakeref = intel_runtime_pm_get_raw(dev_priv);
+	intel_wakeref_t old_work_wakeref = 0;
+
+	mutex_lock(&power_domains->lock);
+
+	/*
+	 * Bail out if all the domain refs pending to be released were grabbed
+	 * by subsequent gets or a flush_work.
+	 */
+	old_work_wakeref = fetch_and_zero(&power_domains->async_put_wakeref);
+	if (!old_work_wakeref)
+		goto out_verify;
+
+	release_async_put_domains(power_domains,
+				  power_domains->async_put_domains[0]);
+
+	/* Requeue the work if more domains were async put meanwhile. */
+	if (power_domains->async_put_domains[1]) {
+		power_domains->async_put_domains[0] =
+			fetch_and_zero(&power_domains->async_put_domains[1]);
+		queue_async_put_domains_work(power_domains,
+					     fetch_and_zero(&new_work_wakeref));
+	}
+
+out_verify:
+	verify_async_put_domains_state(power_domains);
+
+	mutex_unlock(&power_domains->lock);
+
+	if (old_work_wakeref)
+		intel_runtime_pm_put_raw(dev_priv, old_work_wakeref);
+	if (new_work_wakeref)
+		intel_runtime_pm_put_raw(dev_priv, new_work_wakeref);
+}
+
+/**
+ * intel_display_power_put_async - release a power domain reference asynchronously
+ * @i915: i915 device instance
+ * @domain: power domain to reference
+ * @wakeref: wakeref acquired for the reference that is being released
+ *
+ * This function drops the power domain reference obtained by
+ * intel_display_power_get*() and schedules a work to power down the
+ * corresponding hardware block if this is the last reference.
+ */
+void __intel_display_power_put_async(struct drm_i915_private *i915,
+				     enum intel_display_power_domain domain,
+				     intel_wakeref_t wakeref)
+{
+	struct i915_power_domains *power_domains = &i915->power_domains;
+	intel_wakeref_t work_wakeref = intel_runtime_pm_get_raw(i915);
+
+	mutex_lock(&power_domains->lock);
+
+	if (power_domains->domain_use_count[domain] > 1) {
+		__intel_display_power_put_domain(i915, domain);
+
+		goto out_verify;
+	}
+
+	WARN_ON(power_domains->domain_use_count[domain] != 1);
+
+	/* Let a pending work requeue itself or queue a new one. */
+	if (power_domains->async_put_wakeref) {
+		power_domains->async_put_domains[1] |= BIT_ULL(domain);
+	} else {
+		power_domains->async_put_domains[0] |= BIT_ULL(domain);
+		queue_async_put_domains_work(power_domains,
+					     fetch_and_zero(&work_wakeref));
+	}
+
+out_verify:
+	verify_async_put_domains_state(power_domains);
+
+	mutex_unlock(&power_domains->lock);
+
+	if (work_wakeref)
+		intel_runtime_pm_put_raw(i915, work_wakeref);
+
+	intel_runtime_pm_put(i915, wakeref);
+}
+
+/**
+ * intel_display_power_flush_work - flushes the async display power disabling work
+ * @i915: i915 device instance
+ *
+ * Flushes any pending work that was scheduled by a preceding
+ * intel_display_power_put_async() call, completing the disabling of the
+ * corresponding power domains.
+ *
+ * Note that the work handler function may still be running after this
+ * function returns; to ensure that the work handler isn't running use
+ * intel_display_power_flush_work_sync() instead.
+ */
+void intel_display_power_flush_work(struct drm_i915_private *i915)
+{
+	struct i915_power_domains *power_domains = &i915->power_domains;
+	intel_wakeref_t work_wakeref;
+
+	mutex_lock(&power_domains->lock);
+
+	work_wakeref = fetch_and_zero(&power_domains->async_put_wakeref);
+	if (!work_wakeref)
+		goto out_verify;
+
+	release_async_put_domains(power_domains,
+				  async_put_domains_mask(power_domains));
+	cancel_delayed_work(&power_domains->async_put_work);
+
+out_verify:
+	verify_async_put_domains_state(power_domains);
+
+	mutex_unlock(&power_domains->lock);
+
+	if (work_wakeref)
+		intel_runtime_pm_put_raw(i915, work_wakeref);
+}
+
+/**
+ * intel_display_power_flush_work_sync - flushes and syncs the async display power disabling work
+ * @i915: i915 device instance
+ *
+ * Like intel_display_power_flush_work(), but also ensure that the work
+ * handler function is not running any more when this function returns.
+ */
+static void
+intel_display_power_flush_work_sync(struct drm_i915_private *dev_priv)
+{
+	struct i915_power_domains *power_domains = &dev_priv->power_domains;
+
+	intel_display_power_flush_work(dev_priv);
+	cancel_delayed_work_sync(&power_domains->async_put_work);
+
+	verify_async_put_domains_state(power_domains);
+
+	WARN_ON(power_domains->async_put_wakeref);
+}
+
 #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
 /**
  * intel_display_power_put - release a power domain reference
@@ -3525,6 +3852,9 @@ int intel_power_domains_init(struct drm_i915_private *dev_priv)
 
 	mutex_init(&power_domains->lock);
 
+	INIT_DELAYED_WORK(&power_domains->async_put_work,
+			  intel_display_power_put_async_work);
+
 	/*
 	 * The enabling order will be from lower to higher indexed wells,
 	 * the disabling order is reversed.
@@ -4445,6 +4775,8 @@ void intel_power_domains_fini_hw(struct drm_i915_private *i915)
 	if (!i915_modparams.disable_power_well)
 		intel_display_power_put_unchecked(i915, POWER_DOMAIN_INIT);
 
+	intel_display_power_flush_work_sync(i915);
+
 	intel_power_domains_verify_state(i915);
 
 	/* Keep the power well enabled, but cancel its rpm wakeref. */
@@ -4520,6 +4852,7 @@ void intel_power_domains_suspend(struct drm_i915_private *i915,
 	if (!(i915->csr.allowed_dc_mask & DC_STATE_EN_DC9) &&
 	    suspend_mode == I915_DRM_SUSPEND_IDLE &&
 	    i915->csr.dmc_payload) {
+		intel_display_power_flush_work(i915);
 		intel_power_domains_verify_state(i915);
 		return;
 	}
@@ -4531,6 +4864,7 @@ void intel_power_domains_suspend(struct drm_i915_private *i915,
 	if (!i915_modparams.disable_power_well)
 		intel_display_power_put_unchecked(i915, POWER_DOMAIN_INIT);
 
+	intel_display_power_flush_work(i915);
 	intel_power_domains_verify_state(i915);
 
 	if (INTEL_GEN(i915) >= 11)
@@ -4609,6 +4943,8 @@ static void intel_power_domains_verify_state(struct drm_i915_private *i915)
 
 	mutex_lock(&power_domains->lock);
 
+	verify_async_put_domains_state(power_domains);
+
 	dump_domain_info = false;
 	for_each_power_well(i915, power_well) {
 		enum intel_display_power_domain domain;
@@ -4670,6 +5006,11 @@ static intel_wakeref_t __intel_runtime_pm_get(struct drm_i915_private *i915,
 	return track_intel_runtime_pm_wakeref(i915);
 }
 
+static intel_wakeref_t intel_runtime_pm_get_raw(struct drm_i915_private *i915)
+{
+	return __intel_runtime_pm_get(i915, false);
+}
+
 /**
  * intel_runtime_pm_get - grab a runtime pm reference
  * @i915: i915 device instance
@@ -4769,6 +5110,14 @@ static void __intel_runtime_pm_put(struct drm_i915_private *i915,
 	pm_runtime_put_autosuspend(kdev);
 }
 
+#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
+static void
+intel_runtime_pm_put_raw(struct drm_i915_private *i915, intel_wakeref_t wref)
+{
+	__intel_runtime_pm_put(i915, wref, false);
+}
+#endif
+
 /**
  * intel_runtime_pm_put_unchecked - release an unchecked runtime pm reference
  * @i915: i915 device instance
diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.h b/drivers/gpu/drm/i915/intel_runtime_pm.h
index e30b38632bd2..a7a3d929546f 100644
--- a/drivers/gpu/drm/i915/intel_runtime_pm.h
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.h
@@ -59,13 +59,21 @@ intel_display_power_get_if_enabled(struct drm_i915_private *dev_priv,
 				   enum intel_display_power_domain domain);
 void intel_display_power_put_unchecked(struct drm_i915_private *dev_priv,
 				       enum intel_display_power_domain domain);
+void __intel_display_power_put_async(struct drm_i915_private *i915,
+				     enum intel_display_power_domain domain,
+				     intel_wakeref_t wakeref);
+void intel_display_power_flush_work(struct drm_i915_private *i915);
 #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
 void intel_display_power_put(struct drm_i915_private *dev_priv,
 			     enum intel_display_power_domain domain,
 			     intel_wakeref_t wakeref);
+#define intel_display_power_put_async(i915, domain, wakeref) \
+	__intel_display_power_put_async(i915, domain, wakeref)
 #else
 #define intel_display_power_put(i915, domain, wakeref) \
 	intel_display_power_put_unchecked(i915, domain)
+#define intel_display_power_put_async(i915, domain, wakeref) \
+	__intel_display_power_put_async(i915, domain, -1)
 #endif
 void icl_dbuf_slices_update(struct drm_i915_private *dev_priv,
 			    u8 req_slices);
-- 
2.17.1

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

[PATCH v4 04/11] drm/i915: Add support for asynchronous display power disabling

[Imre Deak]

By disabling a power domain asynchronously we can restrict holding a
reference on that power domain to the actual code sequence that
requires the power to be on for the HW access it's doing, by also
avoiding unneeded on-off-on togglings of the power domain (since the
disabling happens with a delay).

One benefit is potential power saving due to the following two reasons:
1. The fact that we will now be holding the reference only for the
   necessary duration by the end of the patchset. While simply not
   delaying the disabling has the same benefit, it has the problem that
   frequent on-off-on power switching has its own power cost (see the 2.
   point below) and the debug trace for power well on/off events will
   cause a lot of dmesg spam (see details about this further below).
2. Avoiding the power cost of freuqent on-off-on power switching. This
   requires us to find the optimal disabling delay based on the measured
   power cost of on->off and off->on switching of each power well vs.
   the power of keeping the given power well on.

   In this patchset I'm not providing this optimal delay for two
   reasons:
   a) I don't have the means yet to perform the measurement (with high
      enough signal-to-noise ratio, or with the help of an energy
      counter that takes switching into account). I'm currently looking
      for a way to measure this.

   b) Before reducing the disabling delay we need an alternative way for
      debug tracing powerwell on/off events. Simply avoiding/throttling
      the debug messages is not a solution, see further below.

   Note that even in the case where we can't measure any considerable
   power cost of frequent on-off switching of powerwells, it still would
   make sense to do the disabling asynchronously (with 0 delay) to avoid
   blocking on the disabling. On VLV I measured this disabling time
   overhead to be 1ms on average with a worst case of 4ms.

In the case of the AUX power domains on ICL we would also need to keep
the sequence where we hold the power reference short, the way it would
be by the end of this patchset where we hold it only for the actual AUX
transfer. Anything else would make the locking we need for ICL TypeC
ports (whenever we hold a reference on any AUX power domain) rather
problematic, adding for instance unnecessary lockdep dependencies to
the required TypeC port lock.

I chose the disabling delay to be 100msec for now to avoid the unneeded
toggling (and so not to introduce dmesg spamming) in the DP MST sideband
signaling code. We could optimize this delay later, once we have the
means to measure the switching power cost (see above).

Note that simply removing/throttling the debug tracing for power well
on/off events is not a solution. We need to know the exact spots of
these events and cannot rely only on incorrect register accesses caught
(due to not holding a wakeref at the time of access). Incorrect
powerwell enabling/disabling could lead to other problems, for instance
we need to keep certain powerwells enabled for the duration of modesets
and AUX transfers.

v2:
- Clarify the commit log parts about power cost measurement and the
  problem of simply removing/throttling debug tracing. (Chris)
- Optimize out local wakeref vars at intel_runtime_pm_put_raw() and
  intel_display_power_put_async() call sites if
  CONFIG_DRM_I915_DEBUG_RUNTIME_PM=n. (Chris)
- Rebased on v2 of the wakeref w/o power-on guarantee patch.
- Add missing docbook headers.
v3:
- Checkpatch spelling/missing-empty-line fix.
v4:
- Fix unintended local wakeref var optimization when using
  call-arguments with side-effects, by using inline funcs instead of
  macros. In this patch in particular this will fix the
  intel_display_power_grab_async_put_ref()->intel_runtime_pm_put_raw()
  call).

  No size change in practice (would be the same disregarding the
  corresponding change in intel_display_power_grab_async_put_ref()):
  $ size i915-macro.ko
     text	   data	    bss	    dec	    hex	filename
  2455190	 105890	  10272	2571352	 273c58	i915-macro.ko
  $ size i915-inline.ko
     text	   data	    bss	    dec	    hex	filename
  2455195	 105890	  10272	2571357	 273c5d	i915-inline.ko

  Kudos to Stan for reporting the raw-wakeref WARNs this issue caused. His
  config has CONFIG_DRM_I915_DEBUG_RUNTIME_PM=n, which I didn't retest
  after v1, and we are also not testing this config in CI.

  Now tested both with CONFIG_DRM_I915_DEBUG_RUNTIME_PM=y/n on ICL,
  connecting both Chamelium and regular DP, HDMI sinks.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Cc: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> (v3)
---
 drivers/gpu/drm/i915/i915_drv.h         |   5 +
 drivers/gpu/drm/i915/intel_runtime_pm.c | 366 +++++++++++++++++++++++-
 drivers/gpu/drm/i915/intel_runtime_pm.h |  33 ++-
 3 files changed, 394 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index d0257808734c..5801f5407589 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -834,6 +834,11 @@ struct i915_power_domains {
 
 	struct mutex lock;
 	int domain_use_count[POWER_DOMAIN_NUM];
+
+	struct delayed_work async_put_work;
+	intel_wakeref_t async_put_wakeref;
+	u64 async_put_domains[2];
+
 	struct i915_power_well *power_wells;
 };
 
diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
index 2cf4943df2e7..a41885c54fe8 100644
--- a/drivers/gpu/drm/i915/intel_runtime_pm.c
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
@@ -60,6 +60,22 @@
  * present for a given platform.
  */
 
+static intel_wakeref_t intel_runtime_pm_get_raw(struct drm_i915_private *i915);
+static void
+__intel_runtime_pm_put(struct drm_i915_private *i915, intel_wakeref_t wref,
+		       bool wakelock);
+
+#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
+static void
+intel_runtime_pm_put_raw(struct drm_i915_private *i915, intel_wakeref_t wref);
+#else
+static inline void intel_runtime_pm_put_raw(struct drm_i915_private *i915,
+					    intel_wakeref_t wref)
+{
+	__intel_runtime_pm_put(i915, -1, false);
+}
+#endif
+
 #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
 
 #include <linux/sort.h>
@@ -1903,6 +1919,125 @@ static void chv_pipe_power_well_disable(struct drm_i915_private *dev_priv,
 	chv_set_pipe_power_well(dev_priv, power_well, false);
 }
 
+static u64 __async_put_domains_mask(struct i915_power_domains *power_domains)
+{
+	return power_domains->async_put_domains[0] |
+	       power_domains->async_put_domains[1];
+}
+
+#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
+
+static bool
+assert_async_put_domain_masks_disjoint(struct i915_power_domains *power_domains)
+{
+	return !WARN_ON(power_domains->async_put_domains[0] &
+			power_domains->async_put_domains[1]);
+}
+
+static bool
+__async_put_domains_state_ok(struct i915_power_domains *power_domains)
+{
+	enum intel_display_power_domain domain;
+	bool err = false;
+
+	err |= !assert_async_put_domain_masks_disjoint(power_domains);
+	err |= WARN_ON(!!power_domains->async_put_wakeref !=
+		       !!__async_put_domains_mask(power_domains));
+
+	for_each_power_domain(domain, __async_put_domains_mask(power_domains))
+		err |= WARN_ON(power_domains->domain_use_count[domain] != 1);
+
+	return !err;
+}
+
+static void print_power_domains(struct i915_power_domains *power_domains,
+				const char *prefix, u64 mask)
+{
+	enum intel_display_power_domain domain;
+
+	DRM_DEBUG_DRIVER("%s (%lu):\n", prefix, hweight64(mask));
+	for_each_power_domain(domain, mask)
+		DRM_DEBUG_DRIVER("%s use_count %d\n",
+				 intel_display_power_domain_str(domain),
+				 power_domains->domain_use_count[domain]);
+}
+
+static void
+print_async_put_domains_state(struct i915_power_domains *power_domains)
+{
+	DRM_DEBUG_DRIVER("async_put_wakeref %u\n",
+			 power_domains->async_put_wakeref);
+
+	print_power_domains(power_domains, "async_put_domains[0]",
+			    power_domains->async_put_domains[0]);
+	print_power_domains(power_domains, "async_put_domains[1]",
+			    power_domains->async_put_domains[1]);
+}
+
+static void
+verify_async_put_domains_state(struct i915_power_domains *power_domains)
+{
+	if (!__async_put_domains_state_ok(power_domains))
+		print_async_put_domains_state(power_domains);
+}
+
+#else
+
+static void
+assert_async_put_domain_masks_disjoint(struct i915_power_domains *power_domains)
+{
+}
+
+static void
+verify_async_put_domains_state(struct i915_power_domains *power_domains)
+{
+}
+
+#endif /* CONFIG_DRM_I915_DEBUG_RUNTIME_PM */
+
+static u64 async_put_domains_mask(struct i915_power_domains *power_domains)
+{
+	assert_async_put_domain_masks_disjoint(power_domains);
+
+	return __async_put_domains_mask(power_domains);
+}
+
+static void
+async_put_domains_clear_domain(struct i915_power_domains *power_domains,
+			       enum intel_display_power_domain domain)
+{
+	assert_async_put_domain_masks_disjoint(power_domains);
+
+	power_domains->async_put_domains[0] &= ~BIT_ULL(domain);
+	power_domains->async_put_domains[1] &= ~BIT_ULL(domain);
+}
+
+static bool
+intel_display_power_grab_async_put_ref(struct drm_i915_private *dev_priv,
+				       enum intel_display_power_domain domain)
+{
+	struct i915_power_domains *power_domains = &dev_priv->power_domains;
+	bool ret = false;
+
+	if (!(async_put_domains_mask(power_domains) & BIT_ULL(domain)))
+		goto out_verify;
+
+	async_put_domains_clear_domain(power_domains, domain);
+
+	ret = true;
+
+	if (async_put_domains_mask(power_domains))
+		goto out_verify;
+
+	cancel_delayed_work(&power_domains->async_put_work);
+	intel_runtime_pm_put_raw(dev_priv,
+				 fetch_and_zero(&power_domains->async_put_wakeref));
+out_verify:
+	verify_async_put_domains_state(power_domains);
+
+	return ret;
+}
+
 static void
 __intel_display_power_get_domain(struct drm_i915_private *dev_priv,
 				 enum intel_display_power_domain domain)
@@ -1910,6 +2045,9 @@ __intel_display_power_get_domain(struct drm_i915_private *dev_priv,
 	struct i915_power_domains *power_domains = &dev_priv->power_domains;
 	struct i915_power_well *power_well;
 
+	if (intel_display_power_grab_async_put_ref(dev_priv, domain))
+		return;
+
 	for_each_power_domain_well(dev_priv, power_well, BIT_ULL(domain))
 		intel_power_well_get(dev_priv, power_well);
 
@@ -1935,9 +2073,7 @@ intel_wakeref_t intel_display_power_get(struct drm_i915_private *dev_priv,
 	intel_wakeref_t wakeref = intel_runtime_pm_get(dev_priv);
 
 	mutex_lock(&power_domains->lock);
-
 	__intel_display_power_get_domain(dev_priv, domain);
-
 	mutex_unlock(&power_domains->lock);
 
 	return wakeref;
@@ -1986,24 +2122,36 @@ intel_display_power_get_if_enabled(struct drm_i915_private *dev_priv,
 	return wakeref;
 }
 
-static void __intel_display_power_put(struct drm_i915_private *dev_priv,
-				      enum intel_display_power_domain domain)
+static void
+__intel_display_power_put_domain(struct drm_i915_private *dev_priv,
+				 enum intel_display_power_domain domain)
 {
 	struct i915_power_domains *power_domains;
 	struct i915_power_well *power_well;
+	const char *name = intel_display_power_domain_str(domain);
 
 	power_domains = &dev_priv->power_domains;
 
-	mutex_lock(&power_domains->lock);
-
 	WARN(!power_domains->domain_use_count[domain],
 	     "Use count on domain %s is already zero\n",
-	     intel_display_power_domain_str(domain));
+	     name);
+	WARN(async_put_domains_mask(power_domains) & BIT_ULL(domain),
+	     "Async disabling of domain %s is pending\n",
+	     name);
+
 	power_domains->domain_use_count[domain]--;
 
 	for_each_power_domain_well_reverse(dev_priv, power_well, BIT_ULL(domain))
 		intel_power_well_put(dev_priv, power_well);
+}
 
+static void __intel_display_power_put(struct drm_i915_private *dev_priv,
+				      enum intel_display_power_domain domain)
+{
+	struct i915_power_domains *power_domains = &dev_priv->power_domains;
+
+	mutex_lock(&power_domains->lock);
+	__intel_display_power_put_domain(dev_priv, domain);
 	mutex_unlock(&power_domains->lock);
 }
 
@@ -2027,6 +2175,188 @@ void intel_display_power_put_unchecked(struct drm_i915_private *dev_priv,
 	intel_runtime_pm_put_unchecked(dev_priv);
 }
 
+static void
+queue_async_put_domains_work(struct i915_power_domains *power_domains,
+			     intel_wakeref_t wakeref)
+{
+	WARN_ON(power_domains->async_put_wakeref);
+	power_domains->async_put_wakeref = wakeref;
+	WARN_ON(!queue_delayed_work(system_unbound_wq,
+				    &power_domains->async_put_work,
+				    msecs_to_jiffies(100)));
+}
+
+static void
+release_async_put_domains(struct i915_power_domains *power_domains, u64 mask)
+{
+	struct drm_i915_private *dev_priv =
+		container_of(power_domains, struct drm_i915_private,
+			     power_domains);
+	enum intel_display_power_domain domain;
+	intel_wakeref_t wakeref;
+
+	/*
+	 * The caller must hold already raw wakeref, upgrade that to a proper
+	 * wakeref to make the state checker happy about the HW access during
+	 * power well disabling.
+	 */
+	assert_rpm_raw_wakeref_held(dev_priv);
+	wakeref = intel_runtime_pm_get(dev_priv);
+
+	for_each_power_domain(domain, mask) {
+		/* Clear before put, so put's sanity check is happy. */
+		async_put_domains_clear_domain(power_domains, domain);
+		__intel_display_power_put_domain(dev_priv, domain);
+	}
+
+	intel_runtime_pm_put(dev_priv, wakeref);
+}
+
+static void
+intel_display_power_put_async_work(struct work_struct *work)
+{
+	struct drm_i915_private *dev_priv =
+		container_of(work, struct drm_i915_private,
+			     power_domains.async_put_work.work);
+	struct i915_power_domains *power_domains = &dev_priv->power_domains;
+	intel_wakeref_t new_work_wakeref = intel_runtime_pm_get_raw(dev_priv);
+	intel_wakeref_t old_work_wakeref = 0;
+
+	mutex_lock(&power_domains->lock);
+
+	/*
+	 * Bail out if all the domain refs pending to be released were grabbed
+	 * by subsequent gets or a flush_work.
+	 */
+	old_work_wakeref = fetch_and_zero(&power_domains->async_put_wakeref);
+	if (!old_work_wakeref)
+		goto out_verify;
+
+	release_async_put_domains(power_domains,
+				  power_domains->async_put_domains[0]);
+
+	/* Requeue the work if more domains were async put meanwhile. */
+	if (power_domains->async_put_domains[1]) {
+		power_domains->async_put_domains[0] =
+			fetch_and_zero(&power_domains->async_put_domains[1]);
+		queue_async_put_domains_work(power_domains,
+					     fetch_and_zero(&new_work_wakeref));
+	}
+
+out_verify:
+	verify_async_put_domains_state(power_domains);
+
+	mutex_unlock(&power_domains->lock);
+
+	if (old_work_wakeref)
+		intel_runtime_pm_put_raw(dev_priv, old_work_wakeref);
+	if (new_work_wakeref)
+		intel_runtime_pm_put_raw(dev_priv, new_work_wakeref);
+}
+
+/**
+ * intel_display_power_put_async - release a power domain reference asynchronously
+ * @i915: i915 device instance
+ * @domain: power domain to reference
+ * @wakeref: wakeref acquired for the reference that is being released
+ *
+ * This function drops the power domain reference obtained by
+ * intel_display_power_get*() and schedules a work to power down the
+ * corresponding hardware block if this is the last reference.
+ */
+void __intel_display_power_put_async(struct drm_i915_private *i915,
+				     enum intel_display_power_domain domain,
+				     intel_wakeref_t wakeref)
+{
+	struct i915_power_domains *power_domains = &i915->power_domains;
+	intel_wakeref_t work_wakeref = intel_runtime_pm_get_raw(i915);
+
+	mutex_lock(&power_domains->lock);
+
+	if (power_domains->domain_use_count[domain] > 1) {
+		__intel_display_power_put_domain(i915, domain);
+
+		goto out_verify;
+	}
+
+	WARN_ON(power_domains->domain_use_count[domain] != 1);
+
+	/* Let a pending work requeue itself or queue a new one. */
+	if (power_domains->async_put_wakeref) {
+		power_domains->async_put_domains[1] |= BIT_ULL(domain);
+	} else {
+		power_domains->async_put_domains[0] |= BIT_ULL(domain);
+		queue_async_put_domains_work(power_domains,
+					     fetch_and_zero(&work_wakeref));
+	}
+
+out_verify:
+	verify_async_put_domains_state(power_domains);
+
+	mutex_unlock(&power_domains->lock);
+
+	if (work_wakeref)
+		intel_runtime_pm_put_raw(i915, work_wakeref);
+
+	intel_runtime_pm_put(i915, wakeref);
+}
+
+/**
+ * intel_display_power_flush_work - flushes the async display power disabling work
+ * @i915: i915 device instance
+ *
+ * Flushes any pending work that was scheduled by a preceding
+ * intel_display_power_put_async() call, completing the disabling of the
+ * corresponding power domains.
+ *
+ * Note that the work handler function may still be running after this
+ * function returns; to ensure that the work handler isn't running use
+ * intel_display_power_flush_work_sync() instead.
+ */
+void intel_display_power_flush_work(struct drm_i915_private *i915)
+{
+	struct i915_power_domains *power_domains = &i915->power_domains;
+	intel_wakeref_t work_wakeref;
+
+	mutex_lock(&power_domains->lock);
+
+	work_wakeref = fetch_and_zero(&power_domains->async_put_wakeref);
+	if (!work_wakeref)
+		goto out_verify;
+
+	release_async_put_domains(power_domains,
+				  async_put_domains_mask(power_domains));
+	cancel_delayed_work(&power_domains->async_put_work);
+
+out_verify:
+	verify_async_put_domains_state(power_domains);
+
+	mutex_unlock(&power_domains->lock);
+
+	if (work_wakeref)
+		intel_runtime_pm_put_raw(i915, work_wakeref);
+}
+
+/**
+ * intel_display_power_flush_work_sync - flushes and syncs the async display power disabling work
+ * @i915: i915 device instance
+ *
+ * Like intel_display_power_flush_work(), but also ensure that the work
+ * handler function is not running any more when this function returns.
+ */
+static void
+intel_display_power_flush_work_sync(struct drm_i915_private *dev_priv)
+{
+	struct i915_power_domains *power_domains = &dev_priv->power_domains;
+
+	intel_display_power_flush_work(dev_priv);
+	cancel_delayed_work_sync(&power_domains->async_put_work);
+
+	verify_async_put_domains_state(power_domains);
+
+	WARN_ON(power_domains->async_put_wakeref);
+}
+
 #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
 /**
  * intel_display_power_put - release a power domain reference
@@ -3525,6 +3855,9 @@ int intel_power_domains_init(struct drm_i915_private *dev_priv)
 
 	mutex_init(&power_domains->lock);
 
+	INIT_DELAYED_WORK(&power_domains->async_put_work,
+			  intel_display_power_put_async_work);
+
 	/*
 	 * The enabling order will be from lower to higher indexed wells,
 	 * the disabling order is reversed.
@@ -4445,6 +4778,8 @@ void intel_power_domains_fini_hw(struct drm_i915_private *i915)
 	if (!i915_modparams.disable_power_well)
 		intel_display_power_put_unchecked(i915, POWER_DOMAIN_INIT);
 
+	intel_display_power_flush_work_sync(i915);
+
 	intel_power_domains_verify_state(i915);
 
 	/* Keep the power well enabled, but cancel its rpm wakeref. */
@@ -4520,6 +4855,7 @@ void intel_power_domains_suspend(struct drm_i915_private *i915,
 	if (!(i915->csr.allowed_dc_mask & DC_STATE_EN_DC9) &&
 	    suspend_mode == I915_DRM_SUSPEND_IDLE &&
 	    i915->csr.dmc_payload) {
+		intel_display_power_flush_work(i915);
 		intel_power_domains_verify_state(i915);
 		return;
 	}
@@ -4531,6 +4867,7 @@ void intel_power_domains_suspend(struct drm_i915_private *i915,
 	if (!i915_modparams.disable_power_well)
 		intel_display_power_put_unchecked(i915, POWER_DOMAIN_INIT);
 
+	intel_display_power_flush_work(i915);
 	intel_power_domains_verify_state(i915);
 
 	if (INTEL_GEN(i915) >= 11)
@@ -4609,6 +4946,8 @@ static void intel_power_domains_verify_state(struct drm_i915_private *i915)
 
 	mutex_lock(&power_domains->lock);
 
+	verify_async_put_domains_state(power_domains);
+
 	dump_domain_info = false;
 	for_each_power_well(i915, power_well) {
 		enum intel_display_power_domain domain;
@@ -4670,6 +5009,11 @@ static intel_wakeref_t __intel_runtime_pm_get(struct drm_i915_private *i915,
 	return track_intel_runtime_pm_wakeref(i915);
 }
 
+static intel_wakeref_t intel_runtime_pm_get_raw(struct drm_i915_private *i915)
+{
+	return __intel_runtime_pm_get(i915, false);
+}
+
 /**
  * intel_runtime_pm_get - grab a runtime pm reference
  * @i915: i915 device instance
@@ -4769,6 +5113,14 @@ static void __intel_runtime_pm_put(struct drm_i915_private *i915,
 	pm_runtime_put_autosuspend(kdev);
 }
 
+#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
+static void
+intel_runtime_pm_put_raw(struct drm_i915_private *i915, intel_wakeref_t wref)
+{
+	__intel_runtime_pm_put(i915, wref, false);
+}
+#endif
+
 /**
  * intel_runtime_pm_put_unchecked - release an unchecked runtime pm reference
  * @i915: i915 device instance
diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.h b/drivers/gpu/drm/i915/intel_runtime_pm.h
index e30b38632bd2..fec83cb618e3 100644
--- a/drivers/gpu/drm/i915/intel_runtime_pm.h
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.h
@@ -59,13 +59,36 @@ intel_display_power_get_if_enabled(struct drm_i915_private *dev_priv,
 				   enum intel_display_power_domain domain);
 void intel_display_power_put_unchecked(struct drm_i915_private *dev_priv,
 				       enum intel_display_power_domain domain);
+void __intel_display_power_put_async(struct drm_i915_private *i915,
+				     enum intel_display_power_domain domain,
+				     intel_wakeref_t wakeref);
+void intel_display_power_flush_work(struct drm_i915_private *i915);
 #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
 void intel_display_power_put(struct drm_i915_private *dev_priv,
 			     enum intel_display_power_domain domain,
 			     intel_wakeref_t wakeref);
+static inline void
+intel_display_power_put_async(struct drm_i915_private *i915,
+			      enum intel_display_power_domain domain,
+			      intel_wakeref_t wakeref)
+{
+	__intel_display_power_put_async(i915, domain, wakeref);
+}
 #else
-#define intel_display_power_put(i915, domain, wakeref) \
-	intel_display_power_put_unchecked(i915, domain)
+static inline void
+intel_display_power_put(struct drm_i915_private *i915,
+			enum intel_display_power_domain domain,
+			intel_wakeref_t wakeref)
+{
+	intel_display_power_put_unchecked(i915, domain);
+}
+static inline void
+intel_display_power_put_async(struct drm_i915_private *i915,
+			      enum intel_display_power_domain domain,
+			      intel_wakeref_t wakeref)
+{
+	__intel_display_power_put_async(i915, domain, -1);
+}
 #endif
 void icl_dbuf_slices_update(struct drm_i915_private *dev_priv,
 			    u8 req_slices);
@@ -86,7 +109,11 @@ void intel_runtime_pm_put_unchecked(struct drm_i915_private *i915);
 #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
 void intel_runtime_pm_put(struct drm_i915_private *i915, intel_wakeref_t wref);
 #else
-#define intel_runtime_pm_put(i915, wref) intel_runtime_pm_put_unchecked(i915)
+static inline void
+intel_runtime_pm_put(struct drm_i915_private *i915, intel_wakeref_t wref)
+{
+	intel_runtime_pm_put_unchecked(i915);
+}
 #endif
 
 #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
-- 
2.17.1

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[PATCH v3 05/11] drm/i915: Disable power asynchronously during DP AUX transfers

[Imre Deak]

In a follow-up patch we will restrict holding the reference on the AUX
power domain to the AUX transfer function. To avoid the unnecessary
on-off-on power togglings drop the reference asynchronously.

There is no reason we couldn't do this in general and also put the
reference asynchronously in pps_unlock(); but that's a separate change
that can be done as a follow-up.

Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/i915/intel_dp.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 53cc4afea256..700ceacb82e6 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1221,7 +1221,10 @@ intel_dp_aux_xfer(struct intel_dp *intel_dp,
 			to_i915(intel_dig_port->base.base.dev);
 	i915_reg_t ch_ctl, ch_data[5];
 	u32 aux_clock_divider;
-	intel_wakeref_t wakeref;
+	enum intel_display_power_domain aux_domain =
+		intel_aux_power_domain(intel_dig_port);
+	intel_wakeref_t aux_wakeref;
+	intel_wakeref_t pps_wakeref;
 	int i, ret, recv_bytes;
 	int try, clock = 0;
 	u32 status;
@@ -1231,7 +1234,8 @@ intel_dp_aux_xfer(struct intel_dp *intel_dp,
 	for (i = 0; i < ARRAY_SIZE(ch_data); i++)
 		ch_data[i] = intel_dp->aux_ch_data_reg(intel_dp, i);
 
-	wakeref = pps_lock(intel_dp);
+	aux_wakeref = intel_display_power_get(dev_priv, aux_domain);
+	pps_wakeref = pps_lock(intel_dp);
 
 	/*
 	 * We will be called with VDD already enabled for dpcd/edid/oui reads.
@@ -1377,7 +1381,8 @@ intel_dp_aux_xfer(struct intel_dp *intel_dp,
 	if (vdd)
 		edp_panel_vdd_off(intel_dp, false);
 
-	pps_unlock(intel_dp, wakeref);
+	pps_unlock(intel_dp, pps_wakeref);
+	intel_display_power_put_async(dev_priv, aux_domain, aux_wakeref);
 
 	return ret;
 }
-- 
2.17.1

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[PATCH v3 06/11] drm/i915: WARN for eDP encoders in intel_dp_detect_dpcd()

[Imre Deak]

We are not calling this function for eDP, so add an early assert about
this for clarity.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/i915/intel_dp.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 700ceacb82e6..1e011998e9d5 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -4844,15 +4844,15 @@ intel_dp_detect_dpcd(struct intel_dp *intel_dp)
 	u8 *dpcd = intel_dp->dpcd;
 	u8 type;
 
+	if (WARN_ON(intel_dp_is_edp(intel_dp)))
+		return connector_status_connected;
+
 	if (lspcon->active)
 		lspcon_resume(lspcon);
 
 	if (!intel_dp_get_dpcd(intel_dp))
 		return connector_status_disconnected;
 
-	if (intel_dp_is_edp(intel_dp))
-		return connector_status_connected;
-
 	/* if there's no downstream port, we're done */
 	if (!drm_dp_is_branch(dpcd))
 		return connector_status_connected;
-- 
2.17.1

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[PATCH v3 07/11] drm/i915: Remove the unneeded AUX power ref from intel_dp_detect()

[Imre Deak]

We don't need the AUX power for the whole duration of the detect, only
when we're doing AUX transfers. The AUX transfer function takes its own
reference on the AUX power domain already. The two places during detect
which access display core registers (not specific to a
pipe/port/transcoder) only need the power domain that is required for
that access. That power domain is equivalent to the device global power
domain on most platforms (enabled whenever we hold a runtime PM
reference) except on CHV/VLV where it's equivalent to the display power
well.

Add a new power domain that reflects the above, and use this at the two
spots accessing registers. With that we can avoid taking the AUX
reference for the whole duration of the detect function.

Put the domains asynchronously to avoid the unneeded on-off-on toggling.

Also adapt the idea from with_intel_runtime_pm et al. for making it easy
to write short sequences where a display power ref is needed.

v2: (Ville)
- Add with_intel_display_power() helper to simplify things.
- s/bool res/bool is_connected/

Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/i915/intel_display.h    |  1 +
 drivers/gpu/drm/i915/intel_dp.c         | 32 +++++++++++++++----------
 drivers/gpu/drm/i915/intel_runtime_pm.c |  4 ++++
 drivers/gpu/drm/i915/intel_runtime_pm.h |  5 ++++
 4 files changed, 29 insertions(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.h b/drivers/gpu/drm/i915/intel_display.h
index 1b6f5a71184d..7f3fafdfbd5f 100644
--- a/drivers/gpu/drm/i915/intel_display.h
+++ b/drivers/gpu/drm/i915/intel_display.h
@@ -220,6 +220,7 @@ enum aux_ch {
 #define aux_ch_name(a) ((a) + 'A')
 
 enum intel_display_power_domain {
+	POWER_DOMAIN_DISPLAY_CORE,
 	POWER_DOMAIN_PIPE_A,
 	POWER_DOMAIN_PIPE_B,
 	POWER_DOMAIN_PIPE_C,
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 1e011998e9d5..553071812f69 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -216,14 +216,16 @@ static int intel_dp_get_fia_supported_lane_count(struct intel_dp *intel_dp)
 	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
 	struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
 	enum tc_port tc_port = intel_port_to_tc(dev_priv, dig_port->base.port);
+	intel_wakeref_t wakeref;
 	u32 lane_info;
 
 	if (tc_port == PORT_TC_NONE || dig_port->tc_type != TC_PORT_TYPEC)
 		return 4;
 
-	lane_info = (I915_READ(PORT_TX_DFLEXDPSP) &
-		     DP_LANE_ASSIGNMENT_MASK(tc_port)) >>
-		    DP_LANE_ASSIGNMENT_SHIFT(tc_port);
+	with_intel_display_power(dev_priv, POWER_DOMAIN_DISPLAY_CORE, wakeref)
+		lane_info = (I915_READ(PORT_TX_DFLEXDPSP) &
+			     DP_LANE_ASSIGNMENT_MASK(tc_port)) >>
+				DP_LANE_ASSIGNMENT_SHIFT(tc_port);
 
 	switch (lane_info) {
 	default:
@@ -5294,7 +5296,7 @@ static bool icl_digital_port_connected(struct intel_encoder *encoder)
  *
  * Return %true if port is connected, %false otherwise.
  */
-bool intel_digital_port_connected(struct intel_encoder *encoder)
+static bool __intel_digital_port_connected(struct intel_encoder *encoder)
 {
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 
@@ -5324,6 +5326,18 @@ bool intel_digital_port_connected(struct intel_encoder *encoder)
 	return false;
 }
 
+bool intel_digital_port_connected(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	intel_wakeref_t wakeref;
+	bool is_connected;
+
+	with_intel_display_power(dev_priv, POWER_DOMAIN_DISPLAY_CORE, wakeref)
+		is_connected = __intel_digital_port_connected(encoder);
+
+	return is_connected;
+}
+
 static struct edid *
 intel_dp_get_edid(struct intel_dp *intel_dp)
 {
@@ -5377,16 +5391,11 @@ intel_dp_detect(struct drm_connector *connector,
 	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
 	struct intel_encoder *encoder = &dig_port->base;
 	enum drm_connector_status status;
-	enum intel_display_power_domain aux_domain =
-		intel_aux_power_domain(dig_port);
-	intel_wakeref_t wakeref;
 
 	DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
 		      connector->base.id, connector->name);
 	WARN_ON(!drm_modeset_is_locked(&dev_priv->drm.mode_config.connection_mutex));
 
-	wakeref = intel_display_power_get(dev_priv, aux_domain);
-
 	/* Can't disconnect eDP */
 	if (intel_dp_is_edp(intel_dp))
 		status = edp_detect(intel_dp);
@@ -5450,10 +5459,8 @@ intel_dp_detect(struct drm_connector *connector,
 		int ret;
 
 		ret = intel_dp_retrain_link(encoder, ctx);
-		if (ret) {
-			intel_display_power_put(dev_priv, aux_domain, wakeref);
+		if (ret)
 			return ret;
-		}
 	}
 
 	/*
@@ -5475,7 +5482,6 @@ intel_dp_detect(struct drm_connector *connector,
 	if (status != connector_status_connected && !intel_dp->is_mst)
 		intel_dp_unset_edid(intel_dp);
 
-	intel_display_power_put(dev_priv, aux_domain, wakeref);
 	return status;
 }
 
diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
index 2ed6fb33856a..3b120515aa9c 100644
--- a/drivers/gpu/drm/i915/intel_runtime_pm.c
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
@@ -406,6 +406,8 @@ const char *
 intel_display_power_domain_str(enum intel_display_power_domain domain)
 {
 	switch (domain) {
+	case POWER_DOMAIN_DISPLAY_CORE:
+		return "DISPLAY_CORE";
 	case POWER_DOMAIN_PIPE_A:
 		return "PIPE_A";
 	case POWER_DOMAIN_PIPE_B:
@@ -2384,6 +2386,7 @@ void intel_display_power_put(struct drm_i915_private *dev_priv,
 	BIT_ULL(POWER_DOMAIN_INIT))
 
 #define VLV_DISPLAY_POWER_DOMAINS (		\
+	BIT_ULL(POWER_DOMAIN_DISPLAY_CORE) |	\
 	BIT_ULL(POWER_DOMAIN_PIPE_A) |		\
 	BIT_ULL(POWER_DOMAIN_PIPE_B) |		\
 	BIT_ULL(POWER_DOMAIN_PIPE_A_PANEL_FITTER) |	\
@@ -2430,6 +2433,7 @@ void intel_display_power_put(struct drm_i915_private *dev_priv,
 	BIT_ULL(POWER_DOMAIN_INIT))
 
 #define CHV_DISPLAY_POWER_DOMAINS (		\
+	BIT_ULL(POWER_DOMAIN_DISPLAY_CORE) |	\
 	BIT_ULL(POWER_DOMAIN_PIPE_A) |		\
 	BIT_ULL(POWER_DOMAIN_PIPE_B) |		\
 	BIT_ULL(POWER_DOMAIN_PIPE_C) |		\
diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.h b/drivers/gpu/drm/i915/intel_runtime_pm.h
index a7a3d929546f..99246eecafab 100644
--- a/drivers/gpu/drm/i915/intel_runtime_pm.h
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.h
@@ -75,6 +75,11 @@ void intel_display_power_put(struct drm_i915_private *dev_priv,
 #define intel_display_power_put_async(i915, domain, wakeref) \
 	__intel_display_power_put_async(i915, domain, -1)
 #endif
+
+#define with_intel_display_power(i915, domain, wf) \
+	for ((wf) = intel_display_power_get((i915), (domain)); (wf); \
+	     intel_display_power_put_async((i915), (domain), (wf)), (wf) = 0)
+
 void icl_dbuf_slices_update(struct drm_i915_private *dev_priv,
 			    u8 req_slices);
 
-- 
2.17.1

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[PATCH v3 08/11] drm/i915: Remove the unneeded AUX power ref from intel_dp_hpd_pulse()

[Imre Deak]

The power get/put was added in

commit 1c767b339b39 ("drm/i915: take display port power domain in DP HPD handler")
Author: Imre Deak <imre.deak@intel.com>
Date:   Mon Aug 18 14:42:42 2014 +0300

to account for the HW access in ibx_digital_port_connected(). This
latter call was in turn removed in

commit 7d23e3c37bb3 ("drm/i915: Cleaning up intel_dp_hpd_pulse")
Author: Shubhangi Shrivastava <shubhangi.shrivastava@intel.com>
Date:   Wed Mar 30 18:05:23 2016 +0530

after which we didn't actually need the power reference.

One way we are accessing the HW during HPD pulse handling is via DP AUX
transfers, but the transfer function takes its own reference, so doesn't
need the reference in intel_dp_hpd_pulse().

The other spot is in

	intel_psr_short_pulse()->intel_psr_disable_locked()

but that can only happen when the panel is enabled with the
corresponding modeset already holding the required power reference.

v2:
- Remove the unneeded power get/put from intel_psr_disable_locked().
  (Ville)
- Checkpatch commit quoting format fix in the commit log.

Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/i915/intel_dp.c | 20 ++++----------------
 1 file changed, 4 insertions(+), 16 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 553071812f69..8a91b453b2e9 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -6302,9 +6302,6 @@ enum irqreturn
 intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd)
 {
 	struct intel_dp *intel_dp = &intel_dig_port->dp;
-	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
-	enum irqreturn ret = IRQ_NONE;
-	intel_wakeref_t wakeref;
 
 	if (long_hpd && intel_dig_port->base.type == INTEL_OUTPUT_EDP) {
 		/*
@@ -6327,9 +6324,6 @@ intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd)
 		return IRQ_NONE;
 	}
 
-	wakeref = intel_display_power_get(dev_priv,
-					  intel_aux_power_domain(intel_dig_port));
-
 	if (intel_dp->is_mst) {
 		if (intel_dp_check_mst_status(intel_dp) == -EINVAL) {
 			/*
@@ -6341,7 +6335,8 @@ intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd)
 			intel_dp->is_mst = false;
 			drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr,
 							intel_dp->is_mst);
-			goto put_power;
+
+			return IRQ_NONE;
 		}
 	}
 
@@ -6351,17 +6346,10 @@ intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd)
 		handled = intel_dp_short_pulse(intel_dp);
 
 		if (!handled)
-			goto put_power;
+			return IRQ_NONE;
 	}
 
-	ret = IRQ_HANDLED;
-
-put_power:
-	intel_display_power_put(dev_priv,
-				intel_aux_power_domain(intel_dig_port),
-				wakeref);
-
-	return ret;
+	return IRQ_HANDLED;
 }
 
 /* check the VBT to see whether the eDP is on another port */
-- 
2.17.1

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Re: [PATCH v3 08/11] drm/i915: Remove the unneeded AUX power ref from intel_dp_hpd_pulse()

[Souza, Jose]

[-- Attachment #1.1: Type: text/plain, Size: 3656 bytes --]

On Thu, 2019-05-09 at 20:34 +0300, Imre Deak wrote:
> The power get/put was added in
> 
> commit 1c767b339b39 ("drm/i915: take display port power domain in DP
> HPD handler")
> Author: Imre Deak <imre.deak@intel.com>
> Date:   Mon Aug 18 14:42:42 2014 +0300
> 
> to account for the HW access in ibx_digital_port_connected(). This
> latter call was in turn removed in
> 
> commit 7d23e3c37bb3 ("drm/i915: Cleaning up intel_dp_hpd_pulse")
> Author: Shubhangi Shrivastava <shubhangi.shrivastava@intel.com>
> Date:   Wed Mar 30 18:05:23 2016 +0530
> 
> after which we didn't actually need the power reference.
> 
> One way we are accessing the HW during HPD pulse handling is via DP
> AUX
> transfers, but the transfer function takes its own reference, so
> doesn't
> need the reference in intel_dp_hpd_pulse().

<Did not look at the other patches />

The problem of removing that reference is that every aux transfer will
take a little bit more of time because it will need to wait the aux
power well to be enabled/disabled, taking one reference before hand
save us that.

> 
> The other spot is in
> 
> 	intel_psr_short_pulse()->intel_psr_disable_locked()
> 
> but that can only happen when the panel is enabled with the
> corresponding modeset already holding the required power reference.
> 
> v2:
> - Remove the unneeded power get/put from intel_psr_disable_locked().
>   (Ville)
> - Checkpatch commit quoting format fix in the commit log.
> 
> Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
> Cc: José Roberto de Souza <jose.souza@intel.com>
> Signed-off-by: Imre Deak <imre.deak@intel.com>
> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
> ---
>  drivers/gpu/drm/i915/intel_dp.c | 20 ++++----------------
>  1 file changed, 4 insertions(+), 16 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_dp.c
> b/drivers/gpu/drm/i915/intel_dp.c
> index 553071812f69..8a91b453b2e9 100644
> --- a/drivers/gpu/drm/i915/intel_dp.c
> +++ b/drivers/gpu/drm/i915/intel_dp.c
> @@ -6302,9 +6302,6 @@ enum irqreturn
>  intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool
> long_hpd)
>  {
>  	struct intel_dp *intel_dp = &intel_dig_port->dp;
> -	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
> -	enum irqreturn ret = IRQ_NONE;
> -	intel_wakeref_t wakeref;
>  
>  	if (long_hpd && intel_dig_port->base.type == INTEL_OUTPUT_EDP)
> {
>  		/*
> @@ -6327,9 +6324,6 @@ intel_dp_hpd_pulse(struct intel_digital_port
> *intel_dig_port, bool long_hpd)
>  		return IRQ_NONE;
>  	}
>  
> -	wakeref = intel_display_power_get(dev_priv,
> -					  intel_aux_power_domain(intel_
> dig_port));
> -
>  	if (intel_dp->is_mst) {
>  		if (intel_dp_check_mst_status(intel_dp) == -EINVAL) {
>  			/*
> @@ -6341,7 +6335,8 @@ intel_dp_hpd_pulse(struct intel_digital_port
> *intel_dig_port, bool long_hpd)
>  			intel_dp->is_mst = false;
>  			drm_dp_mst_topology_mgr_set_mst(&intel_dp-
> >mst_mgr,
>  							intel_dp-
> >is_mst);
> -			goto put_power;
> +
> +			return IRQ_NONE;
>  		}
>  	}
>  
> @@ -6351,17 +6346,10 @@ intel_dp_hpd_pulse(struct intel_digital_port
> *intel_dig_port, bool long_hpd)
>  		handled = intel_dp_short_pulse(intel_dp);
>  
>  		if (!handled)
> -			goto put_power;
> +			return IRQ_NONE;
>  	}
>  
> -	ret = IRQ_HANDLED;
> -
> -put_power:
> -	intel_display_power_put(dev_priv,
> -				intel_aux_power_domain(intel_dig_port),
> -				wakeref);
> -
> -	return ret;
> +	return IRQ_HANDLED;
>  }
>  
>  /* check the VBT to see whether the eDP is on another port */

[-- Attachment #1.2: This is a digitally signed message part --]
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[-- Attachment #2: Type: text/plain, Size: 159 bytes --]

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Re: [PATCH v3 08/11] drm/i915: Remove the unneeded AUX power ref from intel_dp_hpd_pulse()

[Imre Deak]

On Thu, May 09, 2019 at 08:43:25PM +0300, Souza, Jose wrote:
> On Thu, 2019-05-09 at 20:34 +0300, Imre Deak wrote:
> > The power get/put was added in
> > 
> > commit 1c767b339b39 ("drm/i915: take display port power domain in DP
> > HPD handler")
> > Author: Imre Deak <imre.deak@intel.com>
> > Date:   Mon Aug 18 14:42:42 2014 +0300
> > 
> > to account for the HW access in ibx_digital_port_connected(). This
> > latter call was in turn removed in
> > 
> > commit 7d23e3c37bb3 ("drm/i915: Cleaning up intel_dp_hpd_pulse")
> > Author: Shubhangi Shrivastava <shubhangi.shrivastava@intel.com>
> > Date:   Wed Mar 30 18:05:23 2016 +0530
> > 
> > after which we didn't actually need the power reference.
> > 
> > One way we are accessing the HW during HPD pulse handling is via DP
> > AUX
> > transfers, but the transfer function takes its own reference, so
> > doesn't
> > need the reference in intel_dp_hpd_pulse().
> 
> <Did not look at the other patches />
> 
> The problem of removing that reference is that every aux transfer will
> take a little bit more of time because it will need to wait the aux
> power well to be enabled/disabled, taking one reference before hand
> save us that.

That is solved by disabling the power with a delay. But we could only
claim that there would be any problem (even in the lack of the delayed
disabling) with actual numbers for the enabling/disabling delay. Please
check the discussion on patch 4 for more details.

> 
> > 
> > The other spot is in
> > 
> > 	intel_psr_short_pulse()->intel_psr_disable_locked()
> > 
> > but that can only happen when the panel is enabled with the
> > corresponding modeset already holding the required power reference.
> > 
> > v2:
> > - Remove the unneeded power get/put from intel_psr_disable_locked().
> >   (Ville)
> > - Checkpatch commit quoting format fix in the commit log.
> > 
> > Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
> > Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
> > Cc: José Roberto de Souza <jose.souza@intel.com>
> > Signed-off-by: Imre Deak <imre.deak@intel.com>
> > Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
> > ---
> >  drivers/gpu/drm/i915/intel_dp.c | 20 ++++----------------
> >  1 file changed, 4 insertions(+), 16 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/i915/intel_dp.c
> > b/drivers/gpu/drm/i915/intel_dp.c
> > index 553071812f69..8a91b453b2e9 100644
> > --- a/drivers/gpu/drm/i915/intel_dp.c
> > +++ b/drivers/gpu/drm/i915/intel_dp.c
> > @@ -6302,9 +6302,6 @@ enum irqreturn
> >  intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool
> > long_hpd)
> >  {
> >  	struct intel_dp *intel_dp = &intel_dig_port->dp;
> > -	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
> > -	enum irqreturn ret = IRQ_NONE;
> > -	intel_wakeref_t wakeref;
> >  
> >  	if (long_hpd && intel_dig_port->base.type == INTEL_OUTPUT_EDP)
> > {
> >  		/*
> > @@ -6327,9 +6324,6 @@ intel_dp_hpd_pulse(struct intel_digital_port
> > *intel_dig_port, bool long_hpd)
> >  		return IRQ_NONE;
> >  	}
> >  
> > -	wakeref = intel_display_power_get(dev_priv,
> > -					  intel_aux_power_domain(intel_
> > dig_port));
> > -
> >  	if (intel_dp->is_mst) {
> >  		if (intel_dp_check_mst_status(intel_dp) == -EINVAL) {
> >  			/*
> > @@ -6341,7 +6335,8 @@ intel_dp_hpd_pulse(struct intel_digital_port
> > *intel_dig_port, bool long_hpd)
> >  			intel_dp->is_mst = false;
> >  			drm_dp_mst_topology_mgr_set_mst(&intel_dp-
> > >mst_mgr,
> >  							intel_dp-
> > >is_mst);
> > -			goto put_power;
> > +
> > +			return IRQ_NONE;
> >  		}
> >  	}
> >  
> > @@ -6351,17 +6346,10 @@ intel_dp_hpd_pulse(struct intel_digital_port
> > *intel_dig_port, bool long_hpd)
> >  		handled = intel_dp_short_pulse(intel_dp);
> >  
> >  		if (!handled)
> > -			goto put_power;
> > +			return IRQ_NONE;
> >  	}
> >  
> > -	ret = IRQ_HANDLED;
> > -
> > -put_power:
> > -	intel_display_power_put(dev_priv,
> > -				intel_aux_power_domain(intel_dig_port),
> > -				wakeref);
> > -
> > -	return ret;
> > +	return IRQ_HANDLED;
> >  }
> >  
> >  /* check the VBT to see whether the eDP is on another port */


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[PATCH v3 09/11] drm/i915: Replace use of PLLS power domain with DISPLAY_CORE domain

[Imre Deak]

There isn't a separate power domain specific to PLLs. When programming
them we require the same power domain to be enabled which is needed when
accessing other display core parts (not specific to any
pipe/port/transcoder). This corresponds to the DISPLAY_CORE domain added
previously in this patchset, so use that instead to save bits in the
power domain mask.

Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/i915/intel_display.c    |  2 +-
 drivers/gpu/drm/i915/intel_display.h    |  1 -
 drivers/gpu/drm/i915/intel_dpll_mgr.c   | 36 ++++++++++++-------------
 drivers/gpu/drm/i915/intel_runtime_pm.c |  2 --
 4 files changed, 19 insertions(+), 22 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 05177f37181b..5ecab1666704 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -6363,7 +6363,7 @@ static u64 get_crtc_power_domains(struct drm_crtc *crtc,
 		mask |= BIT_ULL(POWER_DOMAIN_AUDIO);
 
 	if (crtc_state->shared_dpll)
-		mask |= BIT_ULL(POWER_DOMAIN_PLLS);
+		mask |= BIT_ULL(POWER_DOMAIN_DISPLAY_CORE);
 
 	return mask;
 }
diff --git a/drivers/gpu/drm/i915/intel_display.h b/drivers/gpu/drm/i915/intel_display.h
index 7f3fafdfbd5f..41f2aa966abc 100644
--- a/drivers/gpu/drm/i915/intel_display.h
+++ b/drivers/gpu/drm/i915/intel_display.h
@@ -251,7 +251,6 @@ enum intel_display_power_domain {
 	POWER_DOMAIN_PORT_OTHER,
 	POWER_DOMAIN_VGA,
 	POWER_DOMAIN_AUDIO,
-	POWER_DOMAIN_PLLS,
 	POWER_DOMAIN_AUX_A,
 	POWER_DOMAIN_AUX_B,
 	POWER_DOMAIN_AUX_C,
diff --git a/drivers/gpu/drm/i915/intel_dpll_mgr.c b/drivers/gpu/drm/i915/intel_dpll_mgr.c
index bf5e2541c35e..897d93537414 100644
--- a/drivers/gpu/drm/i915/intel_dpll_mgr.c
+++ b/drivers/gpu/drm/i915/intel_dpll_mgr.c
@@ -351,7 +351,7 @@ static bool ibx_pch_dpll_get_hw_state(struct drm_i915_private *dev_priv,
 	u32 val;
 
 	wakeref = intel_display_power_get_if_enabled(dev_priv,
-						     POWER_DOMAIN_PLLS);
+						     POWER_DOMAIN_DISPLAY_CORE);
 	if (!wakeref)
 		return false;
 
@@ -360,7 +360,7 @@ static bool ibx_pch_dpll_get_hw_state(struct drm_i915_private *dev_priv,
 	hw_state->fp0 = I915_READ(PCH_FP0(id));
 	hw_state->fp1 = I915_READ(PCH_FP1(id));
 
-	intel_display_power_put(dev_priv, POWER_DOMAIN_PLLS, wakeref);
+	intel_display_power_put(dev_priv, POWER_DOMAIN_DISPLAY_CORE, wakeref);
 
 	return val & DPLL_VCO_ENABLE;
 }
@@ -519,14 +519,14 @@ static bool hsw_ddi_wrpll_get_hw_state(struct drm_i915_private *dev_priv,
 	u32 val;
 
 	wakeref = intel_display_power_get_if_enabled(dev_priv,
-						     POWER_DOMAIN_PLLS);
+						     POWER_DOMAIN_DISPLAY_CORE);
 	if (!wakeref)
 		return false;
 
 	val = I915_READ(WRPLL_CTL(id));
 	hw_state->wrpll = val;
 
-	intel_display_power_put(dev_priv, POWER_DOMAIN_PLLS, wakeref);
+	intel_display_power_put(dev_priv, POWER_DOMAIN_DISPLAY_CORE, wakeref);
 
 	return val & WRPLL_PLL_ENABLE;
 }
@@ -539,14 +539,14 @@ static bool hsw_ddi_spll_get_hw_state(struct drm_i915_private *dev_priv,
 	u32 val;
 
 	wakeref = intel_display_power_get_if_enabled(dev_priv,
-						     POWER_DOMAIN_PLLS);
+						     POWER_DOMAIN_DISPLAY_CORE);
 	if (!wakeref)
 		return false;
 
 	val = I915_READ(SPLL_CTL);
 	hw_state->spll = val;
 
-	intel_display_power_put(dev_priv, POWER_DOMAIN_PLLS, wakeref);
+	intel_display_power_put(dev_priv, POWER_DOMAIN_DISPLAY_CORE, wakeref);
 
 	return val & SPLL_PLL_ENABLE;
 }
@@ -1004,7 +1004,7 @@ static bool skl_ddi_pll_get_hw_state(struct drm_i915_private *dev_priv,
 	bool ret;
 
 	wakeref = intel_display_power_get_if_enabled(dev_priv,
-						     POWER_DOMAIN_PLLS);
+						     POWER_DOMAIN_DISPLAY_CORE);
 	if (!wakeref)
 		return false;
 
@@ -1025,7 +1025,7 @@ static bool skl_ddi_pll_get_hw_state(struct drm_i915_private *dev_priv,
 	ret = true;
 
 out:
-	intel_display_power_put(dev_priv, POWER_DOMAIN_PLLS, wakeref);
+	intel_display_power_put(dev_priv, POWER_DOMAIN_DISPLAY_CORE, wakeref);
 
 	return ret;
 }
@@ -1041,7 +1041,7 @@ static bool skl_ddi_dpll0_get_hw_state(struct drm_i915_private *dev_priv,
 	bool ret;
 
 	wakeref = intel_display_power_get_if_enabled(dev_priv,
-						     POWER_DOMAIN_PLLS);
+						     POWER_DOMAIN_DISPLAY_CORE);
 	if (!wakeref)
 		return false;
 
@@ -1058,7 +1058,7 @@ static bool skl_ddi_dpll0_get_hw_state(struct drm_i915_private *dev_priv,
 	ret = true;
 
 out:
-	intel_display_power_put(dev_priv, POWER_DOMAIN_PLLS, wakeref);
+	intel_display_power_put(dev_priv, POWER_DOMAIN_DISPLAY_CORE, wakeref);
 
 	return ret;
 }
@@ -1602,7 +1602,7 @@ static bool bxt_ddi_pll_get_hw_state(struct drm_i915_private *dev_priv,
 	bxt_port_to_phy_channel(dev_priv, port, &phy, &ch);
 
 	wakeref = intel_display_power_get_if_enabled(dev_priv,
-						     POWER_DOMAIN_PLLS);
+						     POWER_DOMAIN_DISPLAY_CORE);
 	if (!wakeref)
 		return false;
 
@@ -1660,7 +1660,7 @@ static bool bxt_ddi_pll_get_hw_state(struct drm_i915_private *dev_priv,
 	ret = true;
 
 out:
-	intel_display_power_put(dev_priv, POWER_DOMAIN_PLLS, wakeref);
+	intel_display_power_put(dev_priv, POWER_DOMAIN_DISPLAY_CORE, wakeref);
 
 	return ret;
 }
@@ -2087,7 +2087,7 @@ static bool cnl_ddi_pll_get_hw_state(struct drm_i915_private *dev_priv,
 	bool ret;
 
 	wakeref = intel_display_power_get_if_enabled(dev_priv,
-						     POWER_DOMAIN_PLLS);
+						     POWER_DOMAIN_DISPLAY_CORE);
 	if (!wakeref)
 		return false;
 
@@ -2107,7 +2107,7 @@ static bool cnl_ddi_pll_get_hw_state(struct drm_i915_private *dev_priv,
 	ret = true;
 
 out:
-	intel_display_power_put(dev_priv, POWER_DOMAIN_PLLS, wakeref);
+	intel_display_power_put(dev_priv, POWER_DOMAIN_DISPLAY_CORE, wakeref);
 
 	return ret;
 }
@@ -2862,7 +2862,7 @@ static bool mg_pll_get_hw_state(struct drm_i915_private *dev_priv,
 	u32 val;
 
 	wakeref = intel_display_power_get_if_enabled(dev_priv,
-						     POWER_DOMAIN_PLLS);
+						     POWER_DOMAIN_DISPLAY_CORE);
 	if (!wakeref)
 		return false;
 
@@ -2909,7 +2909,7 @@ static bool mg_pll_get_hw_state(struct drm_i915_private *dev_priv,
 
 	ret = true;
 out:
-	intel_display_power_put(dev_priv, POWER_DOMAIN_PLLS, wakeref);
+	intel_display_power_put(dev_priv, POWER_DOMAIN_DISPLAY_CORE, wakeref);
 	return ret;
 }
 
@@ -2924,7 +2924,7 @@ static bool icl_pll_get_hw_state(struct drm_i915_private *dev_priv,
 	u32 val;
 
 	wakeref = intel_display_power_get_if_enabled(dev_priv,
-						     POWER_DOMAIN_PLLS);
+						     POWER_DOMAIN_DISPLAY_CORE);
 	if (!wakeref)
 		return false;
 
@@ -2937,7 +2937,7 @@ static bool icl_pll_get_hw_state(struct drm_i915_private *dev_priv,
 
 	ret = true;
 out:
-	intel_display_power_put(dev_priv, POWER_DOMAIN_PLLS, wakeref);
+	intel_display_power_put(dev_priv, POWER_DOMAIN_DISPLAY_CORE, wakeref);
 	return ret;
 }
 
diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
index 3b120515aa9c..4f8a22ee05eb 100644
--- a/drivers/gpu/drm/i915/intel_runtime_pm.c
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
@@ -468,8 +468,6 @@ intel_display_power_domain_str(enum intel_display_power_domain domain)
 		return "VGA";
 	case POWER_DOMAIN_AUDIO:
 		return "AUDIO";
-	case POWER_DOMAIN_PLLS:
-		return "PLLS";
 	case POWER_DOMAIN_AUX_A:
 		return "AUX_A";
 	case POWER_DOMAIN_AUX_B:
-- 
2.17.1

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[PATCH v3 10/11] drm/i915: Avoid taking the PPS lock for non-eDP/VLV/CHV

[Imre Deak]

On ICL we have to make sure that we enable the AUX power domain in a
controlled way (corresponding to the port's actual TypeC mode). Since
the PPS lock - which takes an AUX power ref - is only needed on
eDP on all platforms and eDP/DP on VLV/CHV avoid taking it in all
other cases.

v2:
- Clarify commit log about the condition for taking the PPS lock.
  (Ville)

Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/i915/intel_dp.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 8a91b453b2e9..52452155250f 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -6259,6 +6259,10 @@ void intel_dp_encoder_reset(struct drm_encoder *encoder)
 
 	intel_dp->reset_link_params = true;
 
+	if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv) &&
+	    !intel_dp_is_edp(intel_dp))
+		return;
+
 	with_pps_lock(intel_dp, wakeref) {
 		if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
 			intel_dp->active_pipe = vlv_active_pipe(intel_dp);
-- 
2.17.1

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[PATCH v3 11/11] drm/i915: Assert that TypeC ports are not used for eDP

[Imre Deak]

Add an assert that we don't use TypeC ports for eDP. That may in theory
be possible on TypeC legacy ports, but I'm not sure if that's a
practical scenario, so let's deal with that only if there's a use case.
Adding support for that wouldn't be too difficult, since TypeC mode
switching is not possible on TypeC legacy ports.

Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/i915/intel_dp.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 52452155250f..e3e719c04440 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -7206,10 +7206,16 @@ intel_dp_init_connector(struct intel_digital_port *intel_dig_port,
 	intel_dp->DP = I915_READ(intel_dp->output_reg);
 	intel_dp->attached_connector = intel_connector;
 
-	if (intel_dp_is_port_edp(dev_priv, port))
+	if (intel_dp_is_port_edp(dev_priv, port)) {
+		/*
+		 * Currently we don't support eDP on TypeC ports, although in
+		 * theory it could work on TypeC legacy ports.
+		 */
+		WARN_ON(intel_port_is_tc(dev_priv, port));
 		type = DRM_MODE_CONNECTOR_eDP;
-	else
+	} else {
 		type = DRM_MODE_CONNECTOR_DisplayPort;
+	}
 
 	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
 		intel_dp->active_pipe = vlv_active_pipe(intel_dp);
-- 
2.17.1

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✗ Fi.CI.CHECKPATCH: warning for drm/i915: Add support for asynchronous display power disabling (rev4)

[Patchwork]

== Series Details ==

Series: drm/i915: Add support for asynchronous display power disabling (rev4)
URL   : https://patchwork.freedesktop.org/series/60242/
State : warning

== Summary ==

$ dim checkpatch origin/drm-tip
cf4ea8e124c3 drm/i915: Add support for tracking wakerefs w/o power-on guarantee
-:45: CHECK:MACRO_ARG_PRECEDENCE: Macro argument 'T' may be better as '(T)' to avoid precedence issues
#45: FILE: drivers/gpu/drm/i915/i915_utils.h:105:
+#define struct_member(T, member) (((T *)0)->member)

-:45: CHECK:MACRO_ARG_PRECEDENCE: Macro argument 'member' may be better as '(member)' to avoid precedence issues
#45: FILE: drivers/gpu/drm/i915/i915_utils.h:105:
+#define struct_member(T, member) (((T *)0)->member)

total: 0 errors, 0 warnings, 2 checks, 341 lines checked
79f1a80345ce drm/i915: Force printing wakeref tacking during pm_cleanup
8fddd30bab27 drm/i915: Verify power domains state during suspend in all cases
ee3d9b40ce98 drm/i915: Add support for asynchronous display power disabling
b782fd807447 drm/i915: Disable power asynchronously during DP AUX transfers
e050454a5a0a drm/i915: WARN for eDP encoders in intel_dp_detect_dpcd()
5acca0e6cc51 drm/i915: Remove the unneeded AUX power ref from intel_dp_detect()
-:176: CHECK:MACRO_ARG_REUSE: Macro argument reuse 'i915' - possible side-effects?
#176: FILE: drivers/gpu/drm/i915/intel_runtime_pm.h:79:
+#define with_intel_display_power(i915, domain, wf) \
+	for ((wf) = intel_display_power_get((i915), (domain)); (wf); \
+	     intel_display_power_put_async((i915), (domain), (wf)), (wf) = 0)

-:176: CHECK:MACRO_ARG_REUSE: Macro argument reuse 'domain' - possible side-effects?
#176: FILE: drivers/gpu/drm/i915/intel_runtime_pm.h:79:
+#define with_intel_display_power(i915, domain, wf) \
+	for ((wf) = intel_display_power_get((i915), (domain)); (wf); \
+	     intel_display_power_put_async((i915), (domain), (wf)), (wf) = 0)

-:176: CHECK:MACRO_ARG_REUSE: Macro argument reuse 'wf' - possible side-effects?
#176: FILE: drivers/gpu/drm/i915/intel_runtime_pm.h:79:
+#define with_intel_display_power(i915, domain, wf) \
+	for ((wf) = intel_display_power_get((i915), (domain)); (wf); \
+	     intel_display_power_put_async((i915), (domain), (wf)), (wf) = 0)

total: 0 errors, 0 warnings, 3 checks, 119 lines checked
c7f8f0661059 drm/i915: Remove the unneeded AUX power ref from intel_dp_hpd_pulse()
-:12: WARNING:COMMIT_LOG_LONG_LINE: Possible unwrapped commit description (prefer a maximum 75 chars per line)
#12: 
commit 1c767b339b39 ("drm/i915: take display port power domain in DP HPD handler")

total: 0 errors, 1 warnings, 0 checks, 46 lines checked
5ed418d5c21c drm/i915: Replace use of PLLS power domain with DISPLAY_CORE domain
8be8c1a2a3ec drm/i915: Avoid taking the PPS lock for non-eDP/VLV/CHV
00c05bcbe976 drm/i915: Assert that TypeC ports are not used for eDP

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

✗ Fi.CI.SPARSE: warning for drm/i915: Add support for asynchronous display power disabling (rev4)

[Patchwork]

== Series Details ==

Series: drm/i915: Add support for asynchronous display power disabling (rev4)
URL   : https://patchwork.freedesktop.org/series/60242/
State : warning

== Summary ==

$ dim sparse origin/drm-tip
Sparse version: v0.5.2
Commit: drm/i915: Add support for tracking wakerefs w/o power-on guarantee
-drivers/gpu/drm/i915/selftests/../i915_utils.h:184:16: warning: expression using sizeof(void)
+drivers/gpu/drm/i915/selftests/../i915_utils.h:186:16: warning: expression using sizeof(void)

Commit: drm/i915: Force printing wakeref tacking during pm_cleanup
Okay!

Commit: drm/i915: Verify power domains state during suspend in all cases
Okay!

Commit: drm/i915: Add support for asynchronous display power disabling
Okay!

Commit: drm/i915: Disable power asynchronously during DP AUX transfers
Okay!

Commit: drm/i915: WARN for eDP encoders in intel_dp_detect_dpcd()
Okay!

Commit: drm/i915: Remove the unneeded AUX power ref from intel_dp_detect()
Okay!

Commit: drm/i915: Remove the unneeded AUX power ref from intel_dp_hpd_pulse()
Okay!

Commit: drm/i915: Replace use of PLLS power domain with DISPLAY_CORE domain
Okay!

Commit: drm/i915: Avoid taking the PPS lock for non-eDP/VLV/CHV
Okay!

Commit: drm/i915: Assert that TypeC ports are not used for eDP
Okay!

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

✓ Fi.CI.BAT: success for drm/i915: Add support for asynchronous display power disabling (rev4)

[Patchwork]

== Series Details ==

Series: drm/i915: Add support for asynchronous display power disabling (rev4)
URL   : https://patchwork.freedesktop.org/series/60242/
State : success

== Summary ==

CI Bug Log - changes from CI_DRM_6072 -> Patchwork_12995
====================================================

Summary
-------

  **SUCCESS**

  No regressions found.

  External URL: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12995/

Known issues
------------

  Here are the changes found in Patchwork_12995 that come from known issues:

### IGT changes ###

#### Issues hit ####

  * igt@amdgpu/amd_basic@userptr:
    - fi-kbl-8809g:       [PASS][1] -> [DMESG-WARN][2] ([fdo#108965])
   [1]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6072/fi-kbl-8809g/igt@amdgpu/amd_basic@userptr.html
   [2]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12995/fi-kbl-8809g/igt@amdgpu/amd_basic@userptr.html

  * igt@kms_frontbuffer_tracking@basic:
    - fi-hsw-peppy:       [PASS][3] -> [DMESG-WARN][4] ([fdo#102614])
   [3]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6072/fi-hsw-peppy/igt@kms_frontbuffer_tracking@basic.html
   [4]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12995/fi-hsw-peppy/igt@kms_frontbuffer_tracking@basic.html

  
#### Possible fixes ####

  * igt@gem_exec_suspend@basic-s4-devices:
    - fi-kbl-7500u:       [DMESG-WARN][5] ([fdo#105128] / [fdo#107139]) -> [PASS][6]
   [5]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6072/fi-kbl-7500u/igt@gem_exec_suspend@basic-s4-devices.html
   [6]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12995/fi-kbl-7500u/igt@gem_exec_suspend@basic-s4-devices.html

  
#### Warnings ####

  * igt@i915_selftest@live_hangcheck:
    - fi-apl-guc:         [INCOMPLETE][7] ([fdo#103927] / [fdo#110624]) -> [DMESG-FAIL][8] ([fdo#110620])
   [7]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6072/fi-apl-guc/igt@i915_selftest@live_hangcheck.html
   [8]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12995/fi-apl-guc/igt@i915_selftest@live_hangcheck.html

  * igt@runner@aborted:
    - fi-apl-guc:         [FAIL][9] ([fdo#110624]) -> [FAIL][10] ([fdo#110622])
   [9]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6072/fi-apl-guc/igt@runner@aborted.html
   [10]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12995/fi-apl-guc/igt@runner@aborted.html

  
  [fdo#102614]: https://bugs.freedesktop.org/show_bug.cgi?id=102614
  [fdo#103927]: https://bugs.freedesktop.org/show_bug.cgi?id=103927
  [fdo#105128]: https://bugs.freedesktop.org/show_bug.cgi?id=105128
  [fdo#107139]: https://bugs.freedesktop.org/show_bug.cgi?id=107139
  [fdo#108965]: https://bugs.freedesktop.org/show_bug.cgi?id=108965
  [fdo#110620]: https://bugs.freedesktop.org/show_bug.cgi?id=110620
  [fdo#110622]: https://bugs.freedesktop.org/show_bug.cgi?id=110622
  [fdo#110624]: https://bugs.freedesktop.org/show_bug.cgi?id=110624


Participating hosts (49 -> 44)
------------------------------

  Additional (1): fi-blb-e6850 
  Missing    (6): fi-ilk-m540 fi-hsw-4200u fi-byt-squawks fi-bsw-cyan fi-ctg-p8600 fi-byt-clapper 


Build changes
-------------

  * Linux: CI_DRM_6072 -> Patchwork_12995

  CI_DRM_6072: 645586708589c3d2ac81114595e875cdfbbff385 @ git://anongit.freedesktop.org/gfx-ci/linux
  IGT_4976: b1d91d0228db999145405e529952ca49bab7f706 @ git://anongit.freedesktop.org/xorg/app/intel-gpu-tools
  Patchwork_12995: 00c05bcbe97667ffa80702b2772dfd90962616a6 @ git://anongit.freedesktop.org/gfx-ci/linux


== Linux commits ==

00c05bcbe976 drm/i915: Assert that TypeC ports are not used for eDP
8be8c1a2a3ec drm/i915: Avoid taking the PPS lock for non-eDP/VLV/CHV
5ed418d5c21c drm/i915: Replace use of PLLS power domain with DISPLAY_CORE domain
c7f8f0661059 drm/i915: Remove the unneeded AUX power ref from intel_dp_hpd_pulse()
5acca0e6cc51 drm/i915: Remove the unneeded AUX power ref from intel_dp_detect()
e050454a5a0a drm/i915: WARN for eDP encoders in intel_dp_detect_dpcd()
b782fd807447 drm/i915: Disable power asynchronously during DP AUX transfers
ee3d9b40ce98 drm/i915: Add support for asynchronous display power disabling
8fddd30bab27 drm/i915: Verify power domains state during suspend in all cases
79f1a80345ce drm/i915: Force printing wakeref tacking during pm_cleanup
cf4ea8e124c3 drm/i915: Add support for tracking wakerefs w/o power-on guarantee

== Logs ==

For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12995/
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

✓ Fi.CI.IGT: success for drm/i915: Add support for asynchronous display power disabling (rev4)

[Patchwork]

== Series Details ==

Series: drm/i915: Add support for asynchronous display power disabling (rev4)
URL   : https://patchwork.freedesktop.org/series/60242/
State : success

== Summary ==

CI Bug Log - changes from CI_DRM_6072_full -> Patchwork_12995_full
====================================================

Summary
-------

  **SUCCESS**

  No regressions found.

  

Known issues
------------

  Here are the changes found in Patchwork_12995_full that come from known issues:

### IGT changes ###

#### Issues hit ####

  * igt@gem_exec_schedule@fifo-blt:
    - shard-hsw:          [PASS][1] -> [INCOMPLETE][2] ([fdo#103540])
   [1]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6072/shard-hsw6/igt@gem_exec_schedule@fifo-blt.html
   [2]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12995/shard-hsw6/igt@gem_exec_schedule@fifo-blt.html

  * igt@gem_workarounds@suspend-resume:
    - shard-apl:          [PASS][3] -> [DMESG-WARN][4] ([fdo#108566]) +6 similar issues
   [3]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6072/shard-apl6/igt@gem_workarounds@suspend-resume.html
   [4]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12995/shard-apl4/igt@gem_workarounds@suspend-resume.html

  * igt@kms_cursor_legacy@2x-nonblocking-modeset-vs-cursor-atomic:
    - shard-glk:          [PASS][5] -> [FAIL][6] ([fdo#106509] / [fdo#107409])
   [5]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6072/shard-glk6/igt@kms_cursor_legacy@2x-nonblocking-modeset-vs-cursor-atomic.html
   [6]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12995/shard-glk1/igt@kms_cursor_legacy@2x-nonblocking-modeset-vs-cursor-atomic.html

  * igt@kms_flip@2x-modeset-vs-vblank-race-interruptible:
    - shard-glk:          [PASS][7] -> [FAIL][8] ([fdo#103060])
   [7]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6072/shard-glk3/igt@kms_flip@2x-modeset-vs-vblank-race-interruptible.html
   [8]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12995/shard-glk5/igt@kms_flip@2x-modeset-vs-vblank-race-interruptible.html

  * igt@kms_flip@flip-vs-expired-vblank:
    - shard-skl:          [PASS][9] -> [FAIL][10] ([fdo#105363]) +1 similar issue
   [9]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6072/shard-skl1/igt@kms_flip@flip-vs-expired-vblank.html
   [10]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12995/shard-skl4/igt@kms_flip@flip-vs-expired-vblank.html

  * igt@kms_frontbuffer_tracking@fbc-1p-pri-indfb-multidraw:
    - shard-iclb:         [PASS][11] -> [FAIL][12] ([fdo#103167]) +4 similar issues
   [11]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6072/shard-iclb3/igt@kms_frontbuffer_tracking@fbc-1p-pri-indfb-multidraw.html
   [12]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12995/shard-iclb1/igt@kms_frontbuffer_tracking@fbc-1p-pri-indfb-multidraw.html

  * igt@kms_pipe_crc_basic@suspend-read-crc-pipe-a:
    - shard-skl:          [PASS][13] -> [INCOMPLETE][14] ([fdo#104108]) +1 similar issue
   [13]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6072/shard-skl10/igt@kms_pipe_crc_basic@suspend-read-crc-pipe-a.html
   [14]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12995/shard-skl5/igt@kms_pipe_crc_basic@suspend-read-crc-pipe-a.html

  * igt@kms_plane_alpha_blend@pipe-c-coverage-7efc:
    - shard-skl:          [PASS][15] -> [FAIL][16] ([fdo#108145] / [fdo#110403])
   [15]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6072/shard-skl1/igt@kms_plane_alpha_blend@pipe-c-coverage-7efc.html
   [16]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12995/shard-skl7/igt@kms_plane_alpha_blend@pipe-c-coverage-7efc.html

  * igt@kms_psr@psr2_cursor_plane_onoff:
    - shard-iclb:         [PASS][17] -> [SKIP][18] ([fdo#109441]) +2 similar issues
   [17]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6072/shard-iclb2/igt@kms_psr@psr2_cursor_plane_onoff.html
   [18]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12995/shard-iclb6/igt@kms_psr@psr2_cursor_plane_onoff.html

  * igt@kms_setmode@basic:
    - shard-apl:          [PASS][19] -> [FAIL][20] ([fdo#99912])
   [19]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6072/shard-apl1/igt@kms_setmode@basic.html
   [20]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12995/shard-apl3/igt@kms_setmode@basic.html

  
#### Possible fixes ####

  * igt@i915_suspend@debugfs-reader:
    - shard-apl:          [DMESG-WARN][21] ([fdo#108566]) -> [PASS][22] +3 similar issues
   [21]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6072/shard-apl6/igt@i915_suspend@debugfs-reader.html
   [22]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12995/shard-apl2/igt@i915_suspend@debugfs-reader.html

  * igt@kms_cursor_crc@cursor-256x256-suspend:
    - shard-apl:          [FAIL][23] ([fdo#103375]) -> [PASS][24]
   [23]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6072/shard-apl5/igt@kms_cursor_crc@cursor-256x256-suspend.html
   [24]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12995/shard-apl5/igt@kms_cursor_crc@cursor-256x256-suspend.html

  * igt@kms_cursor_edge_walk@pipe-b-64x64-bottom-edge:
    - shard-snb:          [SKIP][25] ([fdo#109271] / [fdo#109278]) -> [PASS][26]
   [25]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6072/shard-snb7/igt@kms_cursor_edge_walk@pipe-b-64x64-bottom-edge.html
   [26]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12995/shard-snb7/igt@kms_cursor_edge_walk@pipe-b-64x64-bottom-edge.html

  * igt@kms_dp_dsc@basic-dsc-enable-edp:
    - shard-iclb:         [SKIP][27] ([fdo#109349]) -> [PASS][28]
   [27]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6072/shard-iclb7/igt@kms_dp_dsc@basic-dsc-enable-edp.html
   [28]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12995/shard-iclb2/igt@kms_dp_dsc@basic-dsc-enable-edp.html

  * igt@kms_flip@flip-vs-suspend:
    - shard-kbl:          [DMESG-WARN][29] ([fdo#108566]) -> [PASS][30]
   [29]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6072/shard-kbl1/igt@kms_flip@flip-vs-suspend.html
   [30]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12995/shard-kbl7/igt@kms_flip@flip-vs-suspend.html

  * igt@kms_flip@plain-flip-fb-recreate-interruptible:
    - shard-skl:          [FAIL][31] ([fdo#100368]) -> [PASS][32]
   [31]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6072/shard-skl2/igt@kms_flip@plain-flip-fb-recreate-interruptible.html
   [32]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12995/shard-skl1/igt@kms_flip@plain-flip-fb-recreate-interruptible.html

  * igt@kms_frontbuffer_tracking@fbcpsr-1p-primscrn-cur-indfb-draw-render:
    - shard-iclb:         [FAIL][33] ([fdo#103167]) -> [PASS][34] +3 similar issues
   [33]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6072/shard-iclb2/igt@kms_frontbuffer_tracking@fbcpsr-1p-primscrn-cur-indfb-draw-render.html
   [34]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12995/shard-iclb6/igt@kms_frontbuffer_tracking@fbcpsr-1p-primscrn-cur-indfb-draw-render.html

  * igt@kms_plane_lowres@pipe-a-tiling-y:
    - shard-iclb:         [FAIL][35] ([fdo#103166]) -> [PASS][36]
   [35]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6072/shard-iclb5/igt@kms_plane_lowres@pipe-a-tiling-y.html
   [36]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12995/shard-iclb3/igt@kms_plane_lowres@pipe-a-tiling-y.html

  * igt@kms_psr@psr2_primary_mmap_cpu:
    - shard-iclb:         [SKIP][37] ([fdo#109441]) -> [PASS][38] +2 similar issues
   [37]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6072/shard-iclb7/igt@kms_psr@psr2_primary_mmap_cpu.html
   [38]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12995/shard-iclb2/igt@kms_psr@psr2_primary_mmap_cpu.html

  * igt@kms_setmode@basic:
    - shard-kbl:          [FAIL][39] ([fdo#99912]) -> [PASS][40]
   [39]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6072/shard-kbl5/igt@kms_setmode@basic.html
   [40]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12995/shard-kbl1/igt@kms_setmode@basic.html

  * igt@perf@oa-exponents:
    - shard-glk:          [FAIL][41] ([fdo#105483]) -> [PASS][42]
   [41]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6072/shard-glk5/igt@perf@oa-exponents.html
   [42]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12995/shard-glk5/igt@perf@oa-exponents.html

  
#### Warnings ####

  * igt@kms_frontbuffer_tracking@fbc-1p-shrfb-fliptrack:
    - shard-skl:          [FAIL][43] ([fdo#103167]) -> [FAIL][44] ([fdo#108040])
   [43]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6072/shard-skl5/igt@kms_frontbuffer_tracking@fbc-1p-shrfb-fliptrack.html
   [44]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12995/shard-skl4/igt@kms_frontbuffer_tracking@fbc-1p-shrfb-fliptrack.html

  
  [fdo#100368]: https://bugs.freedesktop.org/show_bug.cgi?id=100368
  [fdo#103060]: https://bugs.freedesktop.org/show_bug.cgi?id=103060
  [fdo#103166]: https://bugs.freedesktop.org/show_bug.cgi?id=103166
  [fdo#103167]: https://bugs.freedesktop.org/show_bug.cgi?id=103167
  [fdo#103375]: https://bugs.freedesktop.org/show_bug.cgi?id=103375
  [fdo#103540]: https://bugs.freedesktop.org/show_bug.cgi?id=103540
  [fdo#104108]: https://bugs.freedesktop.org/show_bug.cgi?id=104108
  [fdo#105363]: https://bugs.freedesktop.org/show_bug.cgi?id=105363
  [fdo#105483]: https://bugs.freedesktop.org/show_bug.cgi?id=105483
  [fdo#106509]: https://bugs.freedesktop.org/show_bug.cgi?id=106509
  [fdo#107409]: https://bugs.freedesktop.org/show_bug.cgi?id=107409
  [fdo#108040]: https://bugs.freedesktop.org/show_bug.cgi?id=108040
  [fdo#108145]: https://bugs.freedesktop.org/show_bug.cgi?id=108145
  [fdo#108566]: https://bugs.freedesktop.org/show_bug.cgi?id=108566
  [fdo#109271]: https://bugs.freedesktop.org/show_bug.cgi?id=109271
  [fdo#109278]: https://bugs.freedesktop.org/show_bug.cgi?id=109278
  [fdo#109349]: https://bugs.freedesktop.org/show_bug.cgi?id=109349
  [fdo#109441]: https://bugs.freedesktop.org/show_bug.cgi?id=109441
  [fdo#110403]: https://bugs.freedesktop.org/show_bug.cgi?id=110403
  [fdo#99912]: https://bugs.freedesktop.org/show_bug.cgi?id=99912


Participating hosts (10 -> 10)
------------------------------

  No changes in participating hosts


Build changes
-------------

  * Linux: CI_DRM_6072 -> Patchwork_12995

  CI_DRM_6072: 645586708589c3d2ac81114595e875cdfbbff385 @ git://anongit.freedesktop.org/gfx-ci/linux
  IGT_4976: b1d91d0228db999145405e529952ca49bab7f706 @ git://anongit.freedesktop.org/xorg/app/intel-gpu-tools
  Patchwork_12995: 00c05bcbe97667ffa80702b2772dfd90962616a6 @ git://anongit.freedesktop.org/gfx-ci/linux
  piglit_4509: fdc5a4ca11124ab8413c7988896eec4c97336694 @ git://anongit.freedesktop.org/piglit

== Logs ==

For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12995/
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

✗ Fi.CI.CHECKPATCH: warning for drm/i915: Add support for asynchronous display power disabling (rev5)

[Patchwork]

== Series Details ==

Series: drm/i915: Add support for asynchronous display power disabling (rev5)
URL   : https://patchwork.freedesktop.org/series/60242/
State : warning

== Summary ==

$ dim checkpatch origin/drm-tip
7638893cffd3 drm/i915: Add support for tracking wakerefs w/o power-on guarantee
-:45: CHECK:MACRO_ARG_PRECEDENCE: Macro argument 'T' may be better as '(T)' to avoid precedence issues
#45: FILE: drivers/gpu/drm/i915/i915_utils.h:105:
+#define struct_member(T, member) (((T *)0)->member)

-:45: CHECK:MACRO_ARG_PRECEDENCE: Macro argument 'member' may be better as '(member)' to avoid precedence issues
#45: FILE: drivers/gpu/drm/i915/i915_utils.h:105:
+#define struct_member(T, member) (((T *)0)->member)

total: 0 errors, 0 warnings, 2 checks, 341 lines checked
7650efc33704 drm/i915: Force printing wakeref tacking during pm_cleanup
bc549fc35e2b drm/i915: Verify power domains state during suspend in all cases
a5cac9598b02 drm/i915: Add support for asynchronous display power disabling
-:626: CHECK:LINE_SPACING: Please use a blank line after function/struct/union/enum declarations
#626: FILE: drivers/gpu/drm/i915/intel_runtime_pm.h:85:
+}
+static inline void

total: 0 errors, 0 warnings, 1 checks, 519 lines checked
9e224e536182 drm/i915: Disable power asynchronously during DP AUX transfers
16c16ea57356 drm/i915: WARN for eDP encoders in intel_dp_detect_dpcd()
d0a3f6ba151b drm/i915: Remove the unneeded AUX power ref from intel_dp_detect()
-:176: CHECK:MACRO_ARG_REUSE: Macro argument reuse 'i915' - possible side-effects?
#176: FILE: drivers/gpu/drm/i915/intel_runtime_pm.h:94:
+#define with_intel_display_power(i915, domain, wf) \
+	for ((wf) = intel_display_power_get((i915), (domain)); (wf); \
+	     intel_display_power_put_async((i915), (domain), (wf)), (wf) = 0)

-:176: CHECK:MACRO_ARG_REUSE: Macro argument reuse 'domain' - possible side-effects?
#176: FILE: drivers/gpu/drm/i915/intel_runtime_pm.h:94:
+#define with_intel_display_power(i915, domain, wf) \
+	for ((wf) = intel_display_power_get((i915), (domain)); (wf); \
+	     intel_display_power_put_async((i915), (domain), (wf)), (wf) = 0)

-:176: CHECK:MACRO_ARG_REUSE: Macro argument reuse 'wf' - possible side-effects?
#176: FILE: drivers/gpu/drm/i915/intel_runtime_pm.h:94:
+#define with_intel_display_power(i915, domain, wf) \
+	for ((wf) = intel_display_power_get((i915), (domain)); (wf); \
+	     intel_display_power_put_async((i915), (domain), (wf)), (wf) = 0)

total: 0 errors, 0 warnings, 3 checks, 119 lines checked
067c55ce5456 drm/i915: Remove the unneeded AUX power ref from intel_dp_hpd_pulse()
-:12: WARNING:COMMIT_LOG_LONG_LINE: Possible unwrapped commit description (prefer a maximum 75 chars per line)
#12: 
commit 1c767b339b39 ("drm/i915: take display port power domain in DP HPD handler")

total: 0 errors, 1 warnings, 0 checks, 46 lines checked
97e49c443919 drm/i915: Replace use of PLLS power domain with DISPLAY_CORE domain
30503f7a72e7 drm/i915: Avoid taking the PPS lock for non-eDP/VLV/CHV
fc767820cb42 drm/i915: Assert that TypeC ports are not used for eDP

_______________________________________________
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✗ Fi.CI.SPARSE: warning for drm/i915: Add support for asynchronous display power disabling (rev5)

[Patchwork]

== Series Details ==

Series: drm/i915: Add support for asynchronous display power disabling (rev5)
URL   : https://patchwork.freedesktop.org/series/60242/
State : warning

== Summary ==

$ dim sparse origin/drm-tip
Sparse version: v0.5.2
Commit: drm/i915: Add support for tracking wakerefs w/o power-on guarantee
-drivers/gpu/drm/i915/selftests/../i915_utils.h:184:16: warning: expression using sizeof(void)
+drivers/gpu/drm/i915/selftests/../i915_utils.h:186:16: warning: expression using sizeof(void)

Commit: drm/i915: Force printing wakeref tacking during pm_cleanup
Okay!

Commit: drm/i915: Verify power domains state during suspend in all cases
Okay!

Commit: drm/i915: Add support for asynchronous display power disabling
Okay!

Commit: drm/i915: Disable power asynchronously during DP AUX transfers
Okay!

Commit: drm/i915: WARN for eDP encoders in intel_dp_detect_dpcd()
Okay!

Commit: drm/i915: Remove the unneeded AUX power ref from intel_dp_detect()
Okay!

Commit: drm/i915: Remove the unneeded AUX power ref from intel_dp_hpd_pulse()
Okay!

Commit: drm/i915: Replace use of PLLS power domain with DISPLAY_CORE domain
Okay!

Commit: drm/i915: Avoid taking the PPS lock for non-eDP/VLV/CHV
Okay!

Commit: drm/i915: Assert that TypeC ports are not used for eDP
Okay!

_______________________________________________
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✓ Fi.CI.BAT: success for drm/i915: Add support for asynchronous display power disabling (rev5)

[Patchwork]

== Series Details ==

Series: drm/i915: Add support for asynchronous display power disabling (rev5)
URL   : https://patchwork.freedesktop.org/series/60242/
State : success

== Summary ==

CI Bug Log - changes from CI_DRM_6077 -> Patchwork_13009
====================================================

Summary
-------

  **SUCCESS**

  No regressions found.

  External URL: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/

Known issues
------------

  Here are the changes found in Patchwork_13009 that come from known issues:

### IGT changes ###

#### Issues hit ####

  * igt@gem_exec_suspend@basic-s3:
    - fi-blb-e6850:       [PASS][1] -> [INCOMPLETE][2] ([fdo#107718])
   [1]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/fi-blb-e6850/igt@gem_exec_suspend@basic-s3.html
   [2]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/fi-blb-e6850/igt@gem_exec_suspend@basic-s3.html

  
  [fdo#107718]: https://bugs.freedesktop.org/show_bug.cgi?id=107718


Participating hosts (53 -> 46)
------------------------------

  Missing    (7): fi-kbl-soraka fi-ilk-m540 fi-hsw-4200u fi-byt-squawks fi-bsw-cyan fi-byt-clapper fi-bdw-samus 


Build changes
-------------

  * Linux: CI_DRM_6077 -> Patchwork_13009

  CI_DRM_6077: f175074b17cfeb7d64cfcfd6b2641641a10d4deb @ git://anongit.freedesktop.org/gfx-ci/linux
  IGT_4984: 66c887d2f7a92a4a97acd9611d5342afc5d4f815 @ git://anongit.freedesktop.org/xorg/app/intel-gpu-tools
  Patchwork_13009: fc767820cb42ad616d59aa7db4ac02d5333aca07 @ git://anongit.freedesktop.org/gfx-ci/linux


== Linux commits ==

fc767820cb42 drm/i915: Assert that TypeC ports are not used for eDP
30503f7a72e7 drm/i915: Avoid taking the PPS lock for non-eDP/VLV/CHV
97e49c443919 drm/i915: Replace use of PLLS power domain with DISPLAY_CORE domain
067c55ce5456 drm/i915: Remove the unneeded AUX power ref from intel_dp_hpd_pulse()
d0a3f6ba151b drm/i915: Remove the unneeded AUX power ref from intel_dp_detect()
16c16ea57356 drm/i915: WARN for eDP encoders in intel_dp_detect_dpcd()
9e224e536182 drm/i915: Disable power asynchronously during DP AUX transfers
a5cac9598b02 drm/i915: Add support for asynchronous display power disabling
bc549fc35e2b drm/i915: Verify power domains state during suspend in all cases
7650efc33704 drm/i915: Force printing wakeref tacking during pm_cleanup
7638893cffd3 drm/i915: Add support for tracking wakerefs w/o power-on guarantee

== Logs ==

For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

✓ Fi.CI.IGT: success for drm/i915: Add support for asynchronous display power disabling (rev5)

[Patchwork]

== Series Details ==

Series: drm/i915: Add support for asynchronous display power disabling (rev5)
URL   : https://patchwork.freedesktop.org/series/60242/
State : success

== Summary ==

CI Bug Log - changes from CI_DRM_6077_full -> Patchwork_13009_full
====================================================

Summary
-------

  **SUCCESS**

  No regressions found.

  

Possible new issues
-------------------

  Here are the unknown changes that may have been introduced in Patchwork_13009_full:

### IGT changes ###

#### Suppressed ####

  The following results come from untrusted machines, tests, or statuses.
  They do not affect the overall result.

  * {igt@kms_cursor_crc@pipe-b-cursor-suspend}:
    - shard-apl:          [PASS][1] -> [DMESG-WARN][2]
   [1]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-apl1/igt@kms_cursor_crc@pipe-b-cursor-suspend.html
   [2]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-apl5/igt@kms_cursor_crc@pipe-b-cursor-suspend.html

  
Known issues
------------

  Here are the changes found in Patchwork_13009_full that come from known issues:

### IGT changes ###

#### Issues hit ####

  * igt@gem_tiled_swapping@non-threaded:
    - shard-hsw:          [PASS][3] -> [FAIL][4] ([fdo#108686])
   [3]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-hsw5/igt@gem_tiled_swapping@non-threaded.html
   [4]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-hsw8/igt@gem_tiled_swapping@non-threaded.html

  * igt@i915_pm_rpm@basic-rte:
    - shard-skl:          [PASS][5] -> [INCOMPLETE][6] ([fdo#107807])
   [5]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-skl5/igt@i915_pm_rpm@basic-rte.html
   [6]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-skl6/igt@i915_pm_rpm@basic-rte.html

  * igt@kms_cursor_legacy@2x-long-cursor-vs-flip-atomic:
    - shard-hsw:          [PASS][7] -> [FAIL][8] ([fdo#105767])
   [7]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-hsw5/igt@kms_cursor_legacy@2x-long-cursor-vs-flip-atomic.html
   [8]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-hsw8/igt@kms_cursor_legacy@2x-long-cursor-vs-flip-atomic.html

  * igt@kms_cursor_legacy@cursor-vs-flip-atomic-transitions:
    - shard-hsw:          [PASS][9] -> [FAIL][10] ([fdo#103355])
   [9]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-hsw6/igt@kms_cursor_legacy@cursor-vs-flip-atomic-transitions.html
   [10]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-hsw6/igt@kms_cursor_legacy@cursor-vs-flip-atomic-transitions.html

  * igt@kms_flip@modeset-vs-vblank-race:
    - shard-glk:          [PASS][11] -> [FAIL][12] ([fdo#103060])
   [11]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-glk6/igt@kms_flip@modeset-vs-vblank-race.html
   [12]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-glk1/igt@kms_flip@modeset-vs-vblank-race.html

  * igt@kms_flip@plain-flip-fb-recreate-interruptible:
    - shard-skl:          [PASS][13] -> [FAIL][14] ([fdo#100368])
   [13]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-skl5/igt@kms_flip@plain-flip-fb-recreate-interruptible.html
   [14]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-skl9/igt@kms_flip@plain-flip-fb-recreate-interruptible.html

  * igt@kms_frontbuffer_tracking@fbcpsr-1p-primscrn-cur-indfb-draw-render:
    - shard-iclb:         [PASS][15] -> [FAIL][16] ([fdo#103167]) +7 similar issues
   [15]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-iclb8/igt@kms_frontbuffer_tracking@fbcpsr-1p-primscrn-cur-indfb-draw-render.html
   [16]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-iclb4/igt@kms_frontbuffer_tracking@fbcpsr-1p-primscrn-cur-indfb-draw-render.html

  * igt@kms_psr@psr2_cursor_render:
    - shard-iclb:         [PASS][17] -> [SKIP][18] ([fdo#109441]) +1 similar issue
   [17]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-iclb2/igt@kms_psr@psr2_cursor_render.html
   [18]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-iclb1/igt@kms_psr@psr2_cursor_render.html

  * igt@kms_vblank@pipe-c-ts-continuation-suspend:
    - shard-apl:          [PASS][19] -> [DMESG-WARN][20] ([fdo#108566]) +1 similar issue
   [19]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-apl6/igt@kms_vblank@pipe-c-ts-continuation-suspend.html
   [20]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-apl7/igt@kms_vblank@pipe-c-ts-continuation-suspend.html

  
#### Possible fixes ####

  * igt@i915_pm_rpm@i2c:
    - shard-skl:          [INCOMPLETE][21] ([fdo#107807]) -> [PASS][22] +1 similar issue
   [21]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-skl1/igt@i915_pm_rpm@i2c.html
   [22]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-skl4/igt@i915_pm_rpm@i2c.html

  * igt@i915_pm_rps@waitboost:
    - shard-apl:          [FAIL][23] ([fdo#102250]) -> [PASS][24]
   [23]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-apl6/igt@i915_pm_rps@waitboost.html
   [24]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-apl6/igt@i915_pm_rps@waitboost.html

  * igt@i915_suspend@fence-restore-tiled2untiled:
    - shard-apl:          [DMESG-WARN][25] ([fdo#108566]) -> [PASS][26] +2 similar issues
   [25]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-apl1/igt@i915_suspend@fence-restore-tiled2untiled.html
   [26]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-apl5/igt@i915_suspend@fence-restore-tiled2untiled.html

  * {igt@kms_cursor_crc@pipe-b-cursor-alpha-opaque}:
    - shard-skl:          [FAIL][27] -> [PASS][28]
   [27]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-skl6/igt@kms_cursor_crc@pipe-b-cursor-alpha-opaque.html
   [28]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-skl1/igt@kms_cursor_crc@pipe-b-cursor-alpha-opaque.html

  * igt@kms_flip_tiling@flip-changes-tiling-y:
    - shard-skl:          [FAIL][29] ([fdo#107931] / [fdo#108303]) -> [PASS][30]
   [29]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-skl6/igt@kms_flip_tiling@flip-changes-tiling-y.html
   [30]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-skl1/igt@kms_flip_tiling@flip-changes-tiling-y.html

  * igt@kms_frontbuffer_tracking@fbcpsr-1p-offscren-pri-shrfb-draw-pwrite:
    - shard-iclb:         [FAIL][31] ([fdo#103167]) -> [PASS][32] +2 similar issues
   [31]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-iclb2/igt@kms_frontbuffer_tracking@fbcpsr-1p-offscren-pri-shrfb-draw-pwrite.html
   [32]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-iclb1/igt@kms_frontbuffer_tracking@fbcpsr-1p-offscren-pri-shrfb-draw-pwrite.html

  * igt@kms_plane_alpha_blend@pipe-b-constant-alpha-min:
    - shard-skl:          [FAIL][33] ([fdo#108145]) -> [PASS][34]
   [33]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-skl6/igt@kms_plane_alpha_blend@pipe-b-constant-alpha-min.html
   [34]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-skl1/igt@kms_plane_alpha_blend@pipe-b-constant-alpha-min.html

  * igt@kms_psr@psr2_primary_mmap_gtt:
    - shard-iclb:         [SKIP][35] ([fdo#109441]) -> [PASS][36] +1 similar issue
   [35]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-iclb3/igt@kms_psr@psr2_primary_mmap_gtt.html
   [36]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-iclb2/igt@kms_psr@psr2_primary_mmap_gtt.html

  * igt@kms_sysfs_edid_timing:
    - shard-iclb:         [FAIL][37] ([fdo#100047]) -> [PASS][38]
   [37]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-iclb3/igt@kms_sysfs_edid_timing.html
   [38]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-iclb7/igt@kms_sysfs_edid_timing.html

  
  {name}: This element is suppressed. This means it is ignored when computing
          the status of the difference (SUCCESS, WARNING, or FAILURE).

  [fdo#100047]: https://bugs.freedesktop.org/show_bug.cgi?id=100047
  [fdo#100368]: https://bugs.freedesktop.org/show_bug.cgi?id=100368
  [fdo#102250]: https://bugs.freedesktop.org/show_bug.cgi?id=102250
  [fdo#103060]: https://bugs.freedesktop.org/show_bug.cgi?id=103060
  [fdo#103167]: https://bugs.freedesktop.org/show_bug.cgi?id=103167
  [fdo#103355]: https://bugs.freedesktop.org/show_bug.cgi?id=103355
  [fdo#105767]: https://bugs.freedesktop.org/show_bug.cgi?id=105767
  [fdo#107807]: https://bugs.freedesktop.org/show_bug.cgi?id=107807
  [fdo#107931]: https://bugs.freedesktop.org/show_bug.cgi?id=107931
  [fdo#108145]: https://bugs.freedesktop.org/show_bug.cgi?id=108145
  [fdo#108303]: https://bugs.freedesktop.org/show_bug.cgi?id=108303
  [fdo#108566]: https://bugs.freedesktop.org/show_bug.cgi?id=108566
  [fdo#108686]: https://bugs.freedesktop.org/show_bug.cgi?id=108686
  [fdo#109441]: https://bugs.freedesktop.org/show_bug.cgi?id=109441


Participating hosts (10 -> 10)
------------------------------

  No changes in participating hosts


Build changes
-------------

  * Linux: CI_DRM_6077 -> Patchwork_13009

  CI_DRM_6077: f175074b17cfeb7d64cfcfd6b2641641a10d4deb @ git://anongit.freedesktop.org/gfx-ci/linux
  IGT_4984: 66c887d2f7a92a4a97acd9611d5342afc5d4f815 @ git://anongit.freedesktop.org/xorg/app/intel-gpu-tools
  Patchwork_13009: fc767820cb42ad616d59aa7db4ac02d5333aca07 @ git://anongit.freedesktop.org/gfx-ci/linux
  piglit_4509: fdc5a4ca11124ab8413c7988896eec4c97336694 @ git://anongit.freedesktop.org/piglit

== Logs ==

For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/
_______________________________________________
Intel-gfx mailing list
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Re: ✓ Fi.CI.IGT: success for drm/i915: Add support for asynchronous display power disabling (rev5)

[Imre Deak]

On Tue, May 14, 2019 at 12:06:36AM +0000, Patchwork wrote:
> == Series Details ==
> 
> Series: drm/i915: Add support for asynchronous display power disabling (rev5)
> URL   : https://patchwork.freedesktop.org/series/60242/
> State : success

Pushed to -dinq with a checkpatch w/s and a docbook fix, thanks for the
reviews and testing!

> 
> == Summary ==
> 
> CI Bug Log - changes from CI_DRM_6077_full -> Patchwork_13009_full
> ====================================================
> 
> Summary
> -------
> 
>   **SUCCESS**
> 
>   No regressions found.
> 
>   
> 
> Possible new issues
> -------------------
> 
>   Here are the unknown changes that may have been introduced in Patchwork_13009_full:
> 
> ### IGT changes ###
> 
> #### Suppressed ####
> 
>   The following results come from untrusted machines, tests, or statuses.
>   They do not affect the overall result.
> 
>   * {igt@kms_cursor_crc@pipe-b-cursor-suspend}:
>     - shard-apl:          [PASS][1] -> [DMESG-WARN][2]
>    [1]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-apl1/igt@kms_cursor_crc@pipe-b-cursor-suspend.html
>    [2]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-apl5/igt@kms_cursor_crc@pipe-b-cursor-suspend.html
> 
>   
> Known issues
> ------------
> 
>   Here are the changes found in Patchwork_13009_full that come from known issues:
> 
> ### IGT changes ###
> 
> #### Issues hit ####
> 
>   * igt@gem_tiled_swapping@non-threaded:
>     - shard-hsw:          [PASS][3] -> [FAIL][4] ([fdo#108686])
>    [3]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-hsw5/igt@gem_tiled_swapping@non-threaded.html
>    [4]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-hsw8/igt@gem_tiled_swapping@non-threaded.html
> 
>   * igt@i915_pm_rpm@basic-rte:
>     - shard-skl:          [PASS][5] -> [INCOMPLETE][6] ([fdo#107807])
>    [5]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-skl5/igt@i915_pm_rpm@basic-rte.html
>    [6]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-skl6/igt@i915_pm_rpm@basic-rte.html
> 
>   * igt@kms_cursor_legacy@2x-long-cursor-vs-flip-atomic:
>     - shard-hsw:          [PASS][7] -> [FAIL][8] ([fdo#105767])
>    [7]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-hsw5/igt@kms_cursor_legacy@2x-long-cursor-vs-flip-atomic.html
>    [8]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-hsw8/igt@kms_cursor_legacy@2x-long-cursor-vs-flip-atomic.html
> 
>   * igt@kms_cursor_legacy@cursor-vs-flip-atomic-transitions:
>     - shard-hsw:          [PASS][9] -> [FAIL][10] ([fdo#103355])
>    [9]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-hsw6/igt@kms_cursor_legacy@cursor-vs-flip-atomic-transitions.html
>    [10]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-hsw6/igt@kms_cursor_legacy@cursor-vs-flip-atomic-transitions.html
> 
>   * igt@kms_flip@modeset-vs-vblank-race:
>     - shard-glk:          [PASS][11] -> [FAIL][12] ([fdo#103060])
>    [11]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-glk6/igt@kms_flip@modeset-vs-vblank-race.html
>    [12]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-glk1/igt@kms_flip@modeset-vs-vblank-race.html
> 
>   * igt@kms_flip@plain-flip-fb-recreate-interruptible:
>     - shard-skl:          [PASS][13] -> [FAIL][14] ([fdo#100368])
>    [13]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-skl5/igt@kms_flip@plain-flip-fb-recreate-interruptible.html
>    [14]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-skl9/igt@kms_flip@plain-flip-fb-recreate-interruptible.html
> 
>   * igt@kms_frontbuffer_tracking@fbcpsr-1p-primscrn-cur-indfb-draw-render:
>     - shard-iclb:         [PASS][15] -> [FAIL][16] ([fdo#103167]) +7 similar issues
>    [15]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-iclb8/igt@kms_frontbuffer_tracking@fbcpsr-1p-primscrn-cur-indfb-draw-render.html
>    [16]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-iclb4/igt@kms_frontbuffer_tracking@fbcpsr-1p-primscrn-cur-indfb-draw-render.html
> 
>   * igt@kms_psr@psr2_cursor_render:
>     - shard-iclb:         [PASS][17] -> [SKIP][18] ([fdo#109441]) +1 similar issue
>    [17]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-iclb2/igt@kms_psr@psr2_cursor_render.html
>    [18]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-iclb1/igt@kms_psr@psr2_cursor_render.html
> 
>   * igt@kms_vblank@pipe-c-ts-continuation-suspend:
>     - shard-apl:          [PASS][19] -> [DMESG-WARN][20] ([fdo#108566]) +1 similar issue
>    [19]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-apl6/igt@kms_vblank@pipe-c-ts-continuation-suspend.html
>    [20]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-apl7/igt@kms_vblank@pipe-c-ts-continuation-suspend.html
> 
>   
> #### Possible fixes ####
> 
>   * igt@i915_pm_rpm@i2c:
>     - shard-skl:          [INCOMPLETE][21] ([fdo#107807]) -> [PASS][22] +1 similar issue
>    [21]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-skl1/igt@i915_pm_rpm@i2c.html
>    [22]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-skl4/igt@i915_pm_rpm@i2c.html
> 
>   * igt@i915_pm_rps@waitboost:
>     - shard-apl:          [FAIL][23] ([fdo#102250]) -> [PASS][24]
>    [23]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-apl6/igt@i915_pm_rps@waitboost.html
>    [24]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-apl6/igt@i915_pm_rps@waitboost.html
> 
>   * igt@i915_suspend@fence-restore-tiled2untiled:
>     - shard-apl:          [DMESG-WARN][25] ([fdo#108566]) -> [PASS][26] +2 similar issues
>    [25]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-apl1/igt@i915_suspend@fence-restore-tiled2untiled.html
>    [26]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-apl5/igt@i915_suspend@fence-restore-tiled2untiled.html
> 
>   * {igt@kms_cursor_crc@pipe-b-cursor-alpha-opaque}:
>     - shard-skl:          [FAIL][27] -> [PASS][28]
>    [27]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-skl6/igt@kms_cursor_crc@pipe-b-cursor-alpha-opaque.html
>    [28]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-skl1/igt@kms_cursor_crc@pipe-b-cursor-alpha-opaque.html
> 
>   * igt@kms_flip_tiling@flip-changes-tiling-y:
>     - shard-skl:          [FAIL][29] ([fdo#107931] / [fdo#108303]) -> [PASS][30]
>    [29]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-skl6/igt@kms_flip_tiling@flip-changes-tiling-y.html
>    [30]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-skl1/igt@kms_flip_tiling@flip-changes-tiling-y.html
> 
>   * igt@kms_frontbuffer_tracking@fbcpsr-1p-offscren-pri-shrfb-draw-pwrite:
>     - shard-iclb:         [FAIL][31] ([fdo#103167]) -> [PASS][32] +2 similar issues
>    [31]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-iclb2/igt@kms_frontbuffer_tracking@fbcpsr-1p-offscren-pri-shrfb-draw-pwrite.html
>    [32]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-iclb1/igt@kms_frontbuffer_tracking@fbcpsr-1p-offscren-pri-shrfb-draw-pwrite.html
> 
>   * igt@kms_plane_alpha_blend@pipe-b-constant-alpha-min:
>     - shard-skl:          [FAIL][33] ([fdo#108145]) -> [PASS][34]
>    [33]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-skl6/igt@kms_plane_alpha_blend@pipe-b-constant-alpha-min.html
>    [34]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-skl1/igt@kms_plane_alpha_blend@pipe-b-constant-alpha-min.html
> 
>   * igt@kms_psr@psr2_primary_mmap_gtt:
>     - shard-iclb:         [SKIP][35] ([fdo#109441]) -> [PASS][36] +1 similar issue
>    [35]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-iclb3/igt@kms_psr@psr2_primary_mmap_gtt.html
>    [36]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-iclb2/igt@kms_psr@psr2_primary_mmap_gtt.html
> 
>   * igt@kms_sysfs_edid_timing:
>     - shard-iclb:         [FAIL][37] ([fdo#100047]) -> [PASS][38]
>    [37]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6077/shard-iclb3/igt@kms_sysfs_edid_timing.html
>    [38]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/shard-iclb7/igt@kms_sysfs_edid_timing.html
> 
>   
>   {name}: This element is suppressed. This means it is ignored when computing
>           the status of the difference (SUCCESS, WARNING, or FAILURE).
> 
>   [fdo#100047]: https://bugs.freedesktop.org/show_bug.cgi?id=100047
>   [fdo#100368]: https://bugs.freedesktop.org/show_bug.cgi?id=100368
>   [fdo#102250]: https://bugs.freedesktop.org/show_bug.cgi?id=102250
>   [fdo#103060]: https://bugs.freedesktop.org/show_bug.cgi?id=103060
>   [fdo#103167]: https://bugs.freedesktop.org/show_bug.cgi?id=103167
>   [fdo#103355]: https://bugs.freedesktop.org/show_bug.cgi?id=103355
>   [fdo#105767]: https://bugs.freedesktop.org/show_bug.cgi?id=105767
>   [fdo#107807]: https://bugs.freedesktop.org/show_bug.cgi?id=107807
>   [fdo#107931]: https://bugs.freedesktop.org/show_bug.cgi?id=107931
>   [fdo#108145]: https://bugs.freedesktop.org/show_bug.cgi?id=108145
>   [fdo#108303]: https://bugs.freedesktop.org/show_bug.cgi?id=108303
>   [fdo#108566]: https://bugs.freedesktop.org/show_bug.cgi?id=108566
>   [fdo#108686]: https://bugs.freedesktop.org/show_bug.cgi?id=108686
>   [fdo#109441]: https://bugs.freedesktop.org/show_bug.cgi?id=109441
> 
> 
> Participating hosts (10 -> 10)
> ------------------------------
> 
>   No changes in participating hosts
> 
> 
> Build changes
> -------------
> 
>   * Linux: CI_DRM_6077 -> Patchwork_13009
> 
>   CI_DRM_6077: f175074b17cfeb7d64cfcfd6b2641641a10d4deb @ git://anongit.freedesktop.org/gfx-ci/linux
>   IGT_4984: 66c887d2f7a92a4a97acd9611d5342afc5d4f815 @ git://anongit.freedesktop.org/xorg/app/intel-gpu-tools
>   Patchwork_13009: fc767820cb42ad616d59aa7db4ac02d5333aca07 @ git://anongit.freedesktop.org/gfx-ci/linux
>   piglit_4509: fdc5a4ca11124ab8413c7988896eec4c97336694 @ git://anongit.freedesktop.org/piglit
> 
> == Logs ==
> 
> For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13009/
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