drm/nv04-nv40: Disable connector polling when there're no spare CRTCs left.
Load detection needs the connector wired to a CRTC, when there are no
inactive CRTCs left that means we need to cut some other head off for
a while, causing intermittent flickering.
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c
index 13f2e1e..c2524ca 100644
--- a/drivers/gpu/drm/nouveau/nouveau_connector.c
+++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
@@ -698,6 +698,44 @@
return NULL;
}
+void
+nouveau_connector_set_polling(struct drm_connector *connector)
+{
+ struct drm_device *dev = connector->dev;
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ struct drm_crtc *crtc;
+ bool spare_crtc = false;
+
+ list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
+ spare_crtc |= !crtc->enabled;
+
+ connector->polled = 0;
+
+ switch (connector->connector_type) {
+ case DRM_MODE_CONNECTOR_VGA:
+ case DRM_MODE_CONNECTOR_TV:
+ if (dev_priv->card_type >= NV_50 ||
+ (nv_gf4_disp_arch(dev) && spare_crtc))
+ connector->polled = DRM_CONNECTOR_POLL_CONNECT;
+ break;
+
+ case DRM_MODE_CONNECTOR_DVII:
+ case DRM_MODE_CONNECTOR_DVID:
+ case DRM_MODE_CONNECTOR_HDMIA:
+ case DRM_MODE_CONNECTOR_DisplayPort:
+ case DRM_MODE_CONNECTOR_eDP:
+ if (dev_priv->card_type >= NV_50)
+ connector->polled = DRM_CONNECTOR_POLL_HPD;
+ else if (connector->connector_type == DRM_MODE_CONNECTOR_DVID ||
+ spare_crtc)
+ connector->polled = DRM_CONNECTOR_POLL_CONNECT;
+ break;
+
+ default:
+ break;
+ }
+}
+
static const struct drm_connector_helper_funcs
nouveau_connector_helper_funcs = {
.get_modes = nouveau_connector_get_modes,
@@ -818,7 +856,6 @@
switch (dcb->type) {
case DCB_CONNECTOR_VGA:
- connector->polled = DRM_CONNECTOR_POLL_CONNECT;
if (dev_priv->card_type >= NV_50) {
drm_connector_attach_property(connector,
dev->mode_config.scaling_mode_property,
@@ -830,17 +867,6 @@
case DCB_CONNECTOR_TV_3:
nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
break;
- case DCB_CONNECTOR_DP:
- case DCB_CONNECTOR_eDP:
- case DCB_CONNECTOR_HDMI_0:
- case DCB_CONNECTOR_HDMI_1:
- case DCB_CONNECTOR_DVI_I:
- case DCB_CONNECTOR_DVI_D:
- if (dev_priv->card_type >= NV_50)
- connector->polled = DRM_CONNECTOR_POLL_HPD;
- else
- connector->polled = DRM_CONNECTOR_POLL_CONNECT;
- /* fall-through */
default:
nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;
@@ -854,6 +880,8 @@
break;
}
+ nouveau_connector_set_polling(connector);
+
drm_sysfs_connector_add(connector);
dcb->drm = connector;
return dcb->drm;