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 88683aaee3b6acd5..617f254b52fe106d 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];
};
/**
--
2.14.0
