[PATCH v3 22/27] rcar-vin: add chsel information to rvin_info

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Each Gen3 SoC has a limited set of predefined routing possibilities for
which CSI-2 device and virtual channel can be routed to which VIN
instance. Prepare to store this information in the struct rvin_info.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
---
 drivers/media/platform/rcar-vin/rcar-vin.h | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/drivers/media/platform/rcar-vin/rcar-vin.h b/drivers/media/platform/rcar-vin/rcar-vin.h
index 94258bf7cd58d097..386ede9c95d9aedb 100644
--- a/drivers/media/platform/rcar-vin/rcar-vin.h
+++ b/drivers/media/platform/rcar-vin/rcar-vin.h
@@ -35,6 +35,9 @@
 /* Max number on VIN instances that can be in a system */
 #define RCAR_VIN_NUM 8
 
+/* Max number of CHSEL values for any Gen3 SoC */
+#define RCAR_CHSEL_MAX 6
+
 enum chip_id {
 	RCAR_H1,
 	RCAR_M1,
@@ -91,6 +94,19 @@ struct rvin_graph_entity {
 
 struct rvin_group;
 
+
+/** struct rvin_group_chsel - Map a CSI2 device and channel for a CHSEL value
+ * @csi:		VIN internal number for CSI2 device
+ * @chan:		CSI-2 channel number on remote. Note that channel
+ *			is not the same as VC. The CSI-2 hardware have 4
+ *			channels it can output on but which VC is outputted
+ *			on which channel is configurable inside the CSI-2.
+ */
+struct rvin_group_chsel {
+	enum rvin_csi_id csi;
+	unsigned int chan;
+};
+
 /**
  * struct rvin_info- Information about the particular VIN implementation
  * @chip:		type of VIN chip
@@ -98,6 +114,9 @@ struct rvin_group;
  *
  * max_width:		max input width the VIN supports
  * max_height:		max input height the VIN supports
+ *
+ * num_chsels:		number of possible chsel values for this VIN
+ * chsels:		routing table VIN <-> CSI-2 for the chsel values
  */
 struct rvin_info {
 	enum chip_id chip;
@@ -105,6 +124,9 @@ struct rvin_info {
 
 	unsigned int max_width;
 	unsigned int max_height;
+
+	unsigned int num_chsels;
+	struct rvin_group_chsel chsels[RCAR_VIN_NUM][RCAR_CHSEL_MAX];
 };
 
 /**
-- 
2.12.0




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