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authorChris Wilson <chris@chris-wilson.co.uk>2010-09-09 23:51:02 +0100
committerDave Airlie <airlied@redhat.com>2010-09-13 20:29:11 +1000
commit7b334fcb45b757ffb093696ca3de1b0c8b4a33f1 (patch)
treefe56259639b9f1c993d742e27468087c46e51f05 /include/drm/drm_crtc.h
parent27849044ca6ff9c52f63271b511282acf6d1c251 (diff)
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drm: Use a nondestructive mode for output detect when polling
Destructive load-detection is very expensive and due to failings elsewhere can trigger system wide stalls of up to 600ms. A simple first step to correcting this is not to invoke such an expensive and destructive load-detection operation automatically. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=29536 Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=16265 Reported-by: Bruno Prémont <bonbons@linux-vserver.org> Tested-by: Sitsofe Wheeler <sitsofe@yahoo.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'include/drm/drm_crtc.h')
-rw-r--r--include/drm/drm_crtc.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index c9f3cc5949a..5536223fbac 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -386,7 +386,8 @@ struct drm_connector_funcs {
void (*dpms)(struct drm_connector *connector, int mode);
void (*save)(struct drm_connector *connector);
void (*restore)(struct drm_connector *connector);
- enum drm_connector_status (*detect)(struct drm_connector *connector);
+ enum drm_connector_status (*detect)(struct drm_connector *connector,
+ bool nondestructive);
int (*fill_modes)(struct drm_connector *connector, uint32_t max_width, uint32_t max_height);
int (*set_property)(struct drm_connector *connector, struct drm_property *property,
uint64_t val);