drm: atmel-hlcdc: move output mode selection in CRTC implementation
In order to support multiple outputs we need to move the output mode
selection to the CRTC object, so that the output validity check can be
done against the drm_atomic_state.
If the connectors selected by a specific mode setting are requiring
incompatible bus format the atomic operation is aborted (->atomic_check()
returns -EINVAL).
In order to implement that, we need to define our own CRTC state and
overload default ->reset(), ->atomic_duplicate_state() and
->atomic_destroy_state() functions.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Tested-by: Nicolas Ferre <nicolas.ferre@atmel.com>
diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h
index 638e3c7..93d0281 100644
--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h
@@ -53,6 +53,8 @@
* @max_spw: maximum vertical/horizontal pulse width
* @max_vpw: maximum vertical back/front porch width
* @max_hpw: maximum horizontal back/front porch width
+ * @conflicting_output_formats: true if RGBXXX output formats conflict with
+ * each other.
* @layers: a layer description table describing available layers
* @nlayers: layer description table size
*/
@@ -64,6 +66,7 @@
int max_spw;
int max_vpw;
int max_hpw;
+ bool conflicting_output_formats;
const struct atmel_hlcdc_layer_desc *layers;
int nlayers;
};