From: Paulo Zanoni <paulo.r.zan...@intel.com>
I want to make this code a little more complicated, so let's extract
the function first.
Signed-off-by: Paulo Zanoni <paulo.r.zan...@intel.com>
---
drivers/gpu/drm/i915/intel_fbc.c | 46 +++++++++++++++++++++++++---------------
1 file changed, 29 insertions(+), 17 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_fbc.c b/drivers/gpu/drm/i915/intel_fbc.c
index 03ba43d..450d0be 100644
--- a/drivers/gpu/drm/i915/intel_fbc.c
+++ b/drivers/gpu/drm/i915/intel_fbc.c
@@ -444,6 +444,32 @@ static bool set_no_fbc_reason(struct drm_i915_private
*dev_priv,
return true;
}
+static struct drm_crtc *intel_fbc_find_crtc(struct drm_i915_private *dev_priv)
+{
+ struct drm_device *dev = dev_priv->dev;
+ struct drm_crtc *crtc = NULL, *tmp_crtc;
+
+ for_each_crtc(dev, tmp_crtc) {
+ if (intel_crtc_active(tmp_crtc) &&
+ to_intel_crtc(tmp_crtc)->primary_enabled) {
+ if (crtc) {
+ if (set_no_fbc_reason(dev_priv,
FBC_MULTIPLE_PIPES))
+ DRM_DEBUG_KMS("more than one pipe
active, disabling compression\n");
+ return NULL;
+ }
+ crtc = tmp_crtc;
+ }
+ }
+
+ if (!crtc || crtc->primary->fb == NULL) {
+ if (set_no_fbc_reason(dev_priv, FBC_NO_OUTPUT))
+ DRM_DEBUG_KMS("no output, disabling\n");
+ return NULL;
+ }
+
+ return crtc;
+}
+
/**
* intel_fbc_update - enable/disable FBC as needed
* @dev: the drm_device
@@ -466,7 +492,7 @@ static bool set_no_fbc_reason(struct drm_i915_private
*dev_priv,
void intel_fbc_update(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
- struct drm_crtc *crtc = NULL, *tmp_crtc;
+ struct drm_crtc *crtc = NULL;
struct intel_crtc *intel_crtc;
struct drm_framebuffer *fb;
struct drm_i915_gem_object *obj;
@@ -497,23 +523,9 @@ void intel_fbc_update(struct drm_device *dev)
* - new fb is too large to fit in compressed buffer
* - going to an unsupported config (interlace, pixel multiply, etc.)
*/
- for_each_crtc(dev, tmp_crtc) {
- if (intel_crtc_active(tmp_crtc) &&
- to_intel_crtc(tmp_crtc)->primary_enabled) {
- if (crtc) {
- if (set_no_fbc_reason(dev_priv,
FBC_MULTIPLE_PIPES))
- DRM_DEBUG_KMS("more than one pipe
active, disabling compression\n");
- goto out_disable;
- }
- crtc = tmp_crtc;
- }
- }
-
- if (!crtc || crtc->primary->fb == NULL) {
- if (set_no_fbc_reason(dev_priv, FBC_NO_OUTPUT))
- DRM_DEBUG_KMS("no output, disabling\n");
+ crtc = intel_fbc_find_crtc(dev_priv);
+ if (!crtc)
goto out_disable;
- }
intel_crtc = to_intel_crtc(crtc);
fb = crtc->primary->fb;
--
2.1.3
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