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 | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/drivers/media/platform/rcar-vin/rcar-vin.h b/drivers/media/platform/rcar-vin/rcar-vin.h
index 903d8fb8426a7860..ca2c2a23cef8506c 100644
--- a/drivers/media/platform/rcar-vin/rcar-vin.h
+++ b/drivers/media/platform/rcar-vin/rcar-vin.h
@@ -43,6 +43,14 @@ enum model_id {
RCAR_GEN3,
};
+enum rvin_csi_id {
+ RVIN_CSI20,
+ RVIN_CSI21,
+ RVIN_CSI40,
+ RVIN_CSI41,
+ RVIN_CSI_MAX,
+};
+
/**
* STOPPED - No operation in progress
* RUNNING - Operation in progress have buffers
@@ -81,12 +89,33 @@ struct rvin_graph_entity {
unsigned int sink_pad;
};
+/** struct rvin_group_route - Map a CSI-2 receiver and channel to a CHSEL
+ * @vin: Which VIN the CSI-2 and VC describes
+ * @csi: VIN internal number for CSI-2 device
+ * @chan: Output channel of the CSI-2 receiver. Each R-Car CSI-2
+ * receiver has four output channels facing the VIN
+ * devices, each channel can carry one CSI-2 Virtual
+ * Channel (VC) and there are no correlation between
+ * output channel number and CSI-2 VC. It's up to the
+ * CSI-2 receiver driver to configure which VC is
+ * outputted on which channel, the VIN devices only
+ * cares about output channels.
+ * @mask: Bitmask of chsel values which accommodates route
+ */
+struct rvin_group_route {
+ unsigned int vin;
+ enum rvin_csi_id csi;
+ unsigned char chan;
+ unsigned int mask;
+};
+
/**
* struct rvin_info - Information about the particular VIN implementation
* @model: VIN model
* @use_mc: use media controller instead of controlling subdevice
* @max_width: max input width the VIN supports
* @max_height: max input height the VIN supports
+ * @routes: routing table VIN <-> CSI-2 for the chsel values
*/
struct rvin_info {
enum model_id model;
@@ -94,6 +123,7 @@ struct rvin_info {
unsigned int max_width;
unsigned int max_height;
+ const struct rvin_group_route *routes;
};
/**
--
2.16.1
