drm/rcar-du: Add platform module device table

The platform device id driver data field points to a device information
structure that only contains a (currently empty) features field for now.
Support for additional model-dependent features will be added later.

Only the R8A7779 variant is currently supported.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.h b/drivers/gpu/drm/rcar-du/rcar_du_drv.h
index 193cc59d495c..06dbf4ff139c 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.h
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.h
@@ -25,9 +25,18 @@ struct clk;
 struct device;
 struct drm_device;
 
+/*
+ * struct rcar_du_device_info - DU model-specific information
+ * @features: device features (RCAR_DU_FEATURE_*)
+ */
+struct rcar_du_device_info {
+	unsigned int features;
+};
+
 struct rcar_du_device {
 	struct device *dev;
 	const struct rcar_du_platform_data *pdata;
+	const struct rcar_du_device_info *info;
 
 	void __iomem *mmio;
 	struct clk *clock;
@@ -50,6 +59,12 @@ struct rcar_du_device {
 	} planes;
 };
 
+static inline bool rcar_du_has(struct rcar_du_device *rcdu,
+			       unsigned int feature)
+{
+	return rcdu->info->features & feature;
+}
+
 int rcar_du_get(struct rcar_du_device *rcdu);
 void rcar_du_put(struct rcar_du_device *rcdu);