From: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx>
We now have dev_priv->fbc.lock and it should be enough to protect
everything related to FBC.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_debugfs.c | 6 ------
drivers/gpu/drm/i915/intel_display.c | 18 ++----------------
drivers/gpu/drm/i915/intel_drv.h | 1 +
drivers/gpu/drm/i915/intel_fbc.c | 22 +++++++++++++++++++---
4 files changed, 22 insertions(+), 25 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index c99be0e..d36aa639 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1620,13 +1620,9 @@ static int i915_fbc_fc_get(void *data, u64 *val)
if (INTEL_INFO(dev)->gen < 7 || !HAS_FBC(dev))
return -ENODEV;
- drm_modeset_lock_all(dev);
mutex_lock(&dev_priv->fbc.lock);
-
*val = dev_priv->fbc.false_color;
-
mutex_unlock(&dev_priv->fbc.lock);
- drm_modeset_unlock_all(dev);
return 0;
}
@@ -1640,7 +1636,6 @@ static int i915_fbc_fc_set(void *data, u64 val)
if (INTEL_INFO(dev)->gen < 7 || !HAS_FBC(dev))
return -ENODEV;
- drm_modeset_lock_all(dev);
mutex_lock(&dev_priv->fbc.lock);
reg = I915_READ(ILK_DPFC_CONTROL);
@@ -1651,7 +1646,6 @@ static int i915_fbc_fc_set(void *data, u64 val)
(reg & ~FBC_CTL_FALSE_COLOR));
mutex_unlock(&dev_priv->fbc.lock);
- drm_modeset_unlock_all(dev);
return 0;
}
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 3f48917..cf3a86d 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -4682,9 +4682,7 @@ intel_post_enable_primary(struct drm_crtc *crtc)
*/
hsw_enable_ips(intel_crtc);
- mutex_lock(&dev->struct_mutex);
intel_fbc_update(dev);
- mutex_unlock(&dev->struct_mutex);
/*
* Gen2 reports pipe underruns whenever all planes are disabled.
@@ -4740,10 +4738,7 @@ intel_pre_disable_primary(struct drm_crtc *crtc)
if (HAS_GMCH_DISPLAY(dev))
intel_set_memory_cxsr(dev_priv, false);
- mutex_lock(&dev->struct_mutex);
- if (dev_priv->fbc.crtc == intel_crtc)
- intel_fbc_disable(dev);
- mutex_unlock(&dev->struct_mutex);
+ intel_fbc_disable_crtc(intel_crtc);
/*
* FIXME IPS should be fine as long as one plane is
@@ -5045,9 +5040,7 @@ static void ironlake_crtc_disable(struct drm_crtc *crtc)
intel_crtc->active = false;
intel_update_watermarks(crtc);
- mutex_lock(&dev->struct_mutex);
intel_fbc_update(dev);
- mutex_unlock(&dev->struct_mutex);
}
static void haswell_crtc_disable(struct drm_crtc *crtc)
@@ -5100,9 +5093,7 @@ static void haswell_crtc_disable(struct drm_crtc *crtc)
intel_crtc->active = false;
intel_update_watermarks(crtc);
- mutex_lock(&dev->struct_mutex);
intel_fbc_update(dev);
- mutex_unlock(&dev->struct_mutex);
if (intel_crtc_to_shared_dpll(intel_crtc))
intel_disable_shared_dpll(intel_crtc);
@@ -6199,9 +6190,7 @@ static void i9xx_crtc_disable(struct drm_crtc *crtc)
intel_crtc->active = false;
intel_update_watermarks(crtc);
- mutex_lock(&dev->struct_mutex);
intel_fbc_update(dev);
- mutex_unlock(&dev->struct_mutex);
}
static void intel_crtc_disable_noatomic(struct drm_crtc *crtc)
@@ -13786,11 +13775,8 @@ static void intel_finish_crtc_commit(struct drm_crtc *crtc)
intel_frontbuffer_flip(dev, intel_crtc->atomic.fb_bits);
- if (intel_crtc->atomic.update_fbc) {
- mutex_lock(&dev->struct_mutex);
+ if (intel_crtc->atomic.update_fbc)
intel_fbc_update(dev);
- mutex_unlock(&dev->struct_mutex);
- }
if (intel_crtc->atomic.post_enable_primary)
intel_post_enable_primary(crtc);
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index bcafefc..ac34041 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1251,6 +1251,7 @@ bool intel_fbc_enabled(struct drm_device *dev);
void intel_fbc_update(struct drm_device *dev);
void intel_fbc_init(struct drm_i915_private *dev_priv);
void intel_fbc_disable(struct drm_device *dev);
+void intel_fbc_disable_crtc(struct intel_crtc *crtc);
void intel_fbc_invalidate(struct drm_i915_private *dev_priv,
unsigned int frontbuffer_bits,
enum fb_op_origin origin);
diff --git a/drivers/gpu/drm/i915/intel_fbc.c b/drivers/gpu/drm/i915/intel_fbc.c
index 31ff88b..ef52847 100644
--- a/drivers/gpu/drm/i915/intel_fbc.c
+++ b/drivers/gpu/drm/i915/intel_fbc.c
@@ -335,7 +335,6 @@ static void intel_fbc_work_fn(struct work_struct *__work)
struct drm_device *dev = work->crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- mutex_lock(&dev->struct_mutex);
mutex_lock(&dev_priv->fbc.lock);
if (work == dev_priv->fbc.fbc_work) {
/* Double check that we haven't switched fb without cancelling
@@ -352,7 +351,6 @@ static void intel_fbc_work_fn(struct work_struct *__work)
dev_priv->fbc.fbc_work = NULL;
}
mutex_unlock(&dev_priv->fbc.lock);
- mutex_unlock(&dev->struct_mutex);
kfree(work);
}
@@ -366,7 +364,7 @@ static void intel_fbc_cancel_work(struct drm_i915_private *dev_priv)
DRM_DEBUG_KMS("cancelling pending FBC enable\n");
- /* Synchronisation is provided by struct_mutex and checking of
+ /* Synchronisation is provided by fbc.lock and checking of
* dev_priv->fbc.fbc_work, so we can perform the cancellation
* entirely asynchronously.
*/
@@ -454,6 +452,24 @@ void intel_fbc_disable(struct drm_device *dev)
mutex_unlock(&dev_priv->fbc.lock);
}
+/**
+ * intel_fbc_disable_crtc - disable FBC for CRTC
+ * @crtc: the CRTC
+ *
+ * This function is called when the CRTC is being disabled. If it is the FBC
+ * CRTC, then FBC will also be disabled.
+ */
+void intel_fbc_disable_crtc(struct intel_crtc *crtc)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ mutex_lock(&dev_priv->fbc.lock);
+ if (dev_priv->fbc.crtc == crtc)
+ __intel_fbc_disable(dev);
+ mutex_unlock(&dev_priv->fbc.lock);
+}
+
const char *intel_no_fbc_reason_str(enum no_fbc_reason reason)
{
switch (reason) {
--
2.1.4
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