[PATCH v5 5/7] media: ipu-bridge: Assign endpoint property indices dynamically

[Fernando Rimoli <fernandorimoli11@gmail.com>]

Index the ep_properties array dynamically instead of plain numerical
values as is done in mipi-disco-img.c.

Signed-off-by: Fernando Rimoli <fernandorimoli11@gmail.com>
Tested-by: Jakob Berg Jespersen <dev@berg.pm> # Surface Pro 7+, IPU6 Tiger Lake
Tested-by: Fil Dunsky <filipp.dunsky@gmail.com> # Surface Pro 8, IPU6 Tiger Lake (8086:9a19)
Tested-by: Lucas Lis <lucaseze.lis@gmail.com> # Surface Pro 7+, IPU6 Tiger Lake (0x9a19)
Tested-by: Kengo Oki <dev.kengo.fugu0141@gmail.com> # Surface Go 4, IPU6 Alder Lake-N 8086:462e
---
 drivers/media/pci/intel/ipu-bridge.c | 27 ++++++++++++++-------------
 include/media/ipu-bridge.h           | 19 ++++++++++++++++++-
 2 files changed, 32 insertions(+), 14 deletions(-)

diff --git a/drivers/media/pci/intel/ipu-bridge.c b/drivers/media/pci/intel/ipu-bridge.c
index 131c70844..eb7d1611b 100644
--- a/drivers/media/pci/intel/ipu-bridge.c
+++ b/drivers/media/pci/intel/ipu-bridge.c
@@ -451,6 +451,7 @@ static void ipu_bridge_create_fwnode_properties(
 {
 	struct ipu_property_names *names = &sensor->prop_names;
 	struct software_node *nodes = sensor->swnodes;
+	unsigned int i = 0;
 
 	sensor->prop_names = prop_names;
 
@@ -508,21 +509,21 @@ static void ipu_bridge_create_fwnode_properties(
 			PROPERTY_ENTRY_REF_ARRAY("lens-focus", sensor->vcm_ref);
 	}
 
-	sensor->ep_properties[0] = PROPERTY_ENTRY_U32(
-					sensor->prop_names.bus_type,
-					V4L2_FWNODE_BUS_TYPE_CSI2_DPHY);
-	sensor->ep_properties[1] = PROPERTY_ENTRY_U32_ARRAY_LEN(
-					sensor->prop_names.data_lanes,
-					bridge->data_lanes, sensor->lanes);
-	sensor->ep_properties[2] = PROPERTY_ENTRY_REF_ARRAY(
-					sensor->prop_names.remote_endpoint,
-					sensor->local_ref);
+	sensor->ep_properties[IPU_BRIDGE_NEXT_PROPERTY(i, EP_BUS_TYPE)] =
+		PROPERTY_ENTRY_U32(names->bus_type,
+				   V4L2_FWNODE_BUS_TYPE_CSI2_DPHY);
+	sensor->ep_properties[IPU_BRIDGE_NEXT_PROPERTY(i, EP_DATA_LANES)] =
+		PROPERTY_ENTRY_U32_ARRAY_LEN(names->data_lanes,
+					     bridge->data_lanes, sensor->lanes);
+	sensor->ep_properties[IPU_BRIDGE_NEXT_PROPERTY(i, EP_REMOTE_EP)] =
+		PROPERTY_ENTRY_REF_ARRAY(names->remote_endpoint,
+					 sensor->local_ref);
 
 	if (cfg->nr_link_freqs > 0)
-		sensor->ep_properties[3] = PROPERTY_ENTRY_U64_ARRAY_LEN(
-			sensor->prop_names.link_frequencies,
-			cfg->link_freqs,
-			cfg->nr_link_freqs);
+		sensor->ep_properties[IPU_BRIDGE_NEXT_PROPERTY(i, EP_LINK_FREQUENCIES)] =
+			PROPERTY_ENTRY_U64_ARRAY_LEN(names->link_frequencies,
+						     cfg->link_freqs,
+						     cfg->nr_link_freqs);
 
 	sensor->ipu_properties[0] = PROPERTY_ENTRY_U32_ARRAY_LEN(
 					sensor->prop_names.data_lanes,
diff --git a/include/media/ipu-bridge.h b/include/media/ipu-bridge.h
index 16fac7654..06701d151 100644
--- a/include/media/ipu-bridge.h
+++ b/include/media/ipu-bridge.h
@@ -64,6 +64,23 @@ enum ipu_sensor_swnodes {
 	SWNODE_COUNT
 };
 
+enum ipu_bridge_ep_props {
+	IPU_BRIDGE_EP_BUS_TYPE,
+	IPU_BRIDGE_EP_DATA_LANES,
+	IPU_BRIDGE_EP_REMOTE_EP,
+	IPU_BRIDGE_EP_LINK_FREQUENCIES,
+	IPU_BRIDGE_EP_NUM_OF,
+	IPU_BRIDGE_EP_NUM_ENTRIES
+};
+
+/*
+ * Get the index of the next property in a property array, with a given maximum
+ * value.
+ */
+#define IPU_BRIDGE_NEXT_PROPERTY(index, max)		\
+	(WARN_ON((index) > IPU_BRIDGE_##max) ?		\
+	 IPU_BRIDGE_##max : (index)++)
+
 /* Data representation as it is in ACPI SSDB buffer */
 struct ipu_sensor_ssdb {
 	u8 version;
@@ -141,7 +158,7 @@ struct ipu_sensor {
 	const char *vcm_type;
 
 	struct ipu_property_names prop_names;
-	struct property_entry ep_properties[5];
+	struct property_entry ep_properties[IPU_BRIDGE_EP_NUM_ENTRIES];
 	struct property_entry dev_properties[5];
 	struct property_entry ipu_properties[3];
 	struct property_entry ivsc_properties[1];
-- 
2.43.0