[PATCH][next] drm/vmwgfx: Let SVGA_REG_NUM_DISPLAYS decide output connectivity
Thomas Hellstrom
thellstrom at vmware.com
Thu Dec 16 06:22:24 PST 2010
Makes the user able to determine the number of connected outputs from
the VMware GUI.
Signed-off-by: Thomas Hellstrom <thellstrom at vmware.com>
---
drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c | 13 ++++++++++---
1 files changed, 10 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c
index 29113c9..335c91c 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c
@@ -340,9 +340,16 @@ static enum drm_connector_status
vmw_ldu_connector_detect(struct drm_connector *connector,
bool force)
{
- if (vmw_connector_to_ldu(connector)->pref_active)
- return connector_status_connected;
- return connector_status_disconnected;
+ uint32_t num_displays;
+ struct drm_device *dev = connector->dev;
+ struct vmw_private *dev_priv = vmw_priv(dev);
+
+ mutex_lock(&dev_priv->hw_mutex);
+ num_displays = vmw_read(dev_priv, SVGA_REG_NUM_DISPLAYS);
+ mutex_unlock(&dev_priv->hw_mutex);
+
+ return ((vmw_connector_to_ldu(connector)->base.unit < num_displays) ?
+ connector_status_connected : connector_status_disconnected);
}
static struct drm_display_mode vmw_ldu_connector_builtin[] = {
--
1.6.2.5
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