drm/i915: Make encoder cloning more flexible

Currently we allow encoders to indicate whether they can be part of a
cloned set with just one flag. That's not flexible enough to describe
the actual hardware capabilities. Instead make it a bitmask of encoder
types with which the current encoder can be cloned.

For now we set the bitmask to allow DVO+DVO and DVO+VGA, which should
match what the old boolean flag allowed. We will add some more cloning
options in the future.

Note that this patch also removes the encoder.possible_clones setting
from encoder setup code - we compute this dynamically.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
[danvet: Add Ville's explanation why removing the encoder
possible_clones is save.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/gpu/drm/i915/intel_tv.c b/drivers/gpu/drm/i915/intel_tv.c
index b64fc1c6ff3f..5be4ab218054 100644
--- a/drivers/gpu/drm/i915/intel_tv.c
+++ b/drivers/gpu/drm/i915/intel_tv.c
@@ -1639,9 +1639,8 @@ intel_tv_init(struct drm_device *dev)
         intel_connector_attach_encoder(intel_connector, intel_encoder);
         intel_encoder->type = INTEL_OUTPUT_TVOUT;
         intel_encoder->crtc_mask = (1 << 0) | (1 << 1);
-        intel_encoder->cloneable = false;
+        intel_encoder->cloneable = 0;
         intel_encoder->base.possible_crtcs = ((1 << 0) | (1 << 1));
-        intel_encoder->base.possible_clones = (1 << INTEL_OUTPUT_TVOUT);
         intel_tv->type = DRM_MODE_CONNECTOR_Unknown;
 
         /* BIOS margin values */