1 files changed, 0 insertions, 314 deletions
diff --git a/drivers/media/pci/intel/ipu3/cio2-bridge.c b/drivers/media/pci/intel/ipu3/cio2-bridge.c
deleted file mode 100644
index 4657e99df033..000000000000
--- a/drivers/media/pci/intel/ipu3/cio2-bridge.c
+++ /dev/null
@@ -1,314 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/* Author: Dan Scally <djrscally@gmail.com> */
-
-#include <linux/acpi.h>
-#include <linux/device.h>
-#include <linux/pci.h>
-#include <linux/property.h>
-#include <media/v4l2-fwnode.h>
-
-#include "cio2-bridge.h"
-
-/*
- * Extend this array with ACPI Hardware IDs of devices known to be working
- * plus the number of link-frequencies expected by their drivers, along with
- * the frequency values in hertz. This is somewhat opportunistic way of adding
- * support for this for now in the hopes of a better source for the information
- * (possibly some encoded value in the SSDB buffer that we're unaware of)
- * becoming apparent in the future.
- *
- * Do not add an entry for a sensor that is not actually supported.
- */
-static const struct cio2_sensor_config cio2_supported_sensors[] = {
-	/* Omnivision OV5693 */
-	CIO2_SENSOR_CONFIG("INT33BE", 0),
-	/* Omnivision OV2680 */
-	CIO2_SENSOR_CONFIG("OVTI2680", 0),
-};
-
-static const struct cio2_property_names prop_names = {
-	.clock_frequency = "clock-frequency",
-	.rotation = "rotation",
-	.bus_type = "bus-type",
-	.data_lanes = "data-lanes",
-	.remote_endpoint = "remote-endpoint",
-	.link_frequencies = "link-frequencies",
-};
-
-static int cio2_bridge_read_acpi_buffer(struct acpi_device *adev, char *id,
-					void *data, u32 size)
-{
-	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
-	union acpi_object *obj;
-	acpi_status status;
-	int ret = 0;
-
-	status = acpi_evaluate_object(adev->handle, id, NULL, &buffer);
-	if (ACPI_FAILURE(status))
-		return -ENODEV;
-
-	obj = buffer.pointer;
-	if (!obj) {
-		dev_err(&adev->dev, "Couldn't locate ACPI buffer\n");
-		return -ENODEV;
-	}
-
-	if (obj->type != ACPI_TYPE_BUFFER) {
-		dev_err(&adev->dev, "Not an ACPI buffer\n");
-		ret = -ENODEV;
-		goto out_free_buff;
-	}
-
-	if (obj->buffer.length > size) {
-		dev_err(&adev->dev, "Given buffer is too small\n");
-		ret = -EINVAL;
-		goto out_free_buff;
-	}
-
-	memcpy(data, obj->buffer.pointer, obj->buffer.length);
-
-out_free_buff:
-	kfree(buffer.pointer);
-	return ret;
-}
-
-static void cio2_bridge_create_fwnode_properties(
-	struct cio2_sensor *sensor,
-	struct cio2_bridge *bridge,
-	const struct cio2_sensor_config *cfg)
-{
-	sensor->prop_names = prop_names;
-
-	sensor->local_ref[0] = SOFTWARE_NODE_REFERENCE(&sensor->swnodes[SWNODE_CIO2_ENDPOINT]);
-	sensor->remote_ref[0] = SOFTWARE_NODE_REFERENCE(&sensor->swnodes[SWNODE_SENSOR_ENDPOINT]);
-
-	sensor->dev_properties[0] = PROPERTY_ENTRY_U32(
-					sensor->prop_names.clock_frequency,
-					sensor->ssdb.mclkspeed);
-	sensor->dev_properties[1] = PROPERTY_ENTRY_U8(
-					sensor->prop_names.rotation,
-					sensor->ssdb.degree);
-
-	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->ssdb.lanes);
-	sensor->ep_properties[2] = PROPERTY_ENTRY_REF_ARRAY(
-					sensor->prop_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->cio2_properties[0] = PROPERTY_ENTRY_U32_ARRAY_LEN(
-					sensor->prop_names.data_lanes,
-					bridge->data_lanes,
-					sensor->ssdb.lanes);
-	sensor->cio2_properties[1] = PROPERTY_ENTRY_REF_ARRAY(
-					sensor->prop_names.remote_endpoint,
-					sensor->remote_ref);
-}
-
-static void cio2_bridge_init_swnode_names(struct cio2_sensor *sensor)
-{
-	snprintf(sensor->node_names.remote_port,
-		 sizeof(sensor->node_names.remote_port),
-		 SWNODE_GRAPH_PORT_NAME_FMT, sensor->ssdb.link);
-	snprintf(sensor->node_names.port,
-		 sizeof(sensor->node_names.port),
-		 SWNODE_GRAPH_PORT_NAME_FMT, 0); /* Always port 0 */
-	snprintf(sensor->node_names.endpoint,
-		 sizeof(sensor->node_names.endpoint),
-		 SWNODE_GRAPH_ENDPOINT_NAME_FMT, 0); /* And endpoint 0 */
-}
-
-static void cio2_bridge_create_connection_swnodes(struct cio2_bridge *bridge,
-						  struct cio2_sensor *sensor)
-{
-	struct software_node *nodes = sensor->swnodes;
-
-	cio2_bridge_init_swnode_names(sensor);
-
-	nodes[SWNODE_SENSOR_HID] = NODE_SENSOR(sensor->name,
-					       sensor->dev_properties);
-	nodes[SWNODE_SENSOR_PORT] = NODE_PORT(sensor->node_names.port,
-					      &nodes[SWNODE_SENSOR_HID]);
-	nodes[SWNODE_SENSOR_ENDPOINT] = NODE_ENDPOINT(
-						sensor->node_names.endpoint,
-						&nodes[SWNODE_SENSOR_PORT],
-						sensor->ep_properties);
-	nodes[SWNODE_CIO2_PORT] = NODE_PORT(sensor->node_names.remote_port,
-					    &bridge->cio2_hid_node);
-	nodes[SWNODE_CIO2_ENDPOINT] = NODE_ENDPOINT(
-						sensor->node_names.endpoint,
-						&nodes[SWNODE_CIO2_PORT],
-						sensor->cio2_properties);
-}
-
-static void cio2_bridge_unregister_sensors(struct cio2_bridge *bridge)
-{
-	struct cio2_sensor *sensor;
-	unsigned int i;
-
-	for (i = 0; i < bridge->n_sensors; i++) {
-		sensor = &bridge->sensors[i];
-		software_node_unregister_nodes(sensor->swnodes);
-		acpi_dev_put(sensor->adev);
-	}
-}
-
-static int cio2_bridge_connect_sensor(const struct cio2_sensor_config *cfg,
-				      struct cio2_bridge *bridge,
-				      struct pci_dev *cio2)
-{
-	struct fwnode_handle *fwnode;
-	struct cio2_sensor *sensor;
-	struct acpi_device *adev;
-	int ret;
-
-	for_each_acpi_dev_match(adev, cfg->hid, NULL, -1) {
-		if (!adev->status.enabled) {
-			acpi_dev_put(adev);
-			continue;
-		}
-
-		if (bridge->n_sensors >= CIO2_NUM_PORTS) {
-			acpi_dev_put(adev);
-			dev_err(&cio2->dev, "Exceeded available CIO2 ports\n");
-			return -EINVAL;
-		}
-
-		sensor = &bridge->sensors[bridge->n_sensors];
-		sensor->adev = adev;
-		strscpy(sensor->name, cfg->hid, sizeof(sensor->name));
-
-		ret = cio2_bridge_read_acpi_buffer(adev, "SSDB",
-						   &sensor->ssdb,
-						   sizeof(sensor->ssdb));
-		if (ret)
-			goto err_put_adev;
-
-		if (sensor->ssdb.lanes > CIO2_MAX_LANES) {
-			dev_err(&adev->dev,
-				"Number of lanes in SSDB is invalid\n");
-			ret = -EINVAL;
-			goto err_put_adev;
-		}
-
-		cio2_bridge_create_fwnode_properties(sensor, bridge, cfg);
-		cio2_bridge_create_connection_swnodes(bridge, sensor);
-
-		ret = software_node_register_nodes(sensor->swnodes);
-		if (ret)
-			goto err_put_adev;
-
-		fwnode = software_node_fwnode(&sensor->swnodes[
-						      SWNODE_SENSOR_HID]);
-		if (!fwnode) {
-			ret = -ENODEV;
-			goto err_free_swnodes;
-		}
-
-		adev->fwnode.secondary = fwnode;
-
-		dev_info(&cio2->dev, "Found supported sensor %s\n",
-			 acpi_dev_name(adev));
-
-		bridge->n_sensors++;
-	}
-
-	return 0;
-
-err_free_swnodes:
-	software_node_unregister_nodes(sensor->swnodes);
-err_put_adev:
-	acpi_dev_put(sensor->adev);
-	return ret;
-}
-
-static int cio2_bridge_connect_sensors(struct cio2_bridge *bridge,
-				       struct pci_dev *cio2)
-{
-	unsigned int i;
-	int ret;
-
-	for (i = 0; i < ARRAY_SIZE(cio2_supported_sensors); i++) {
-		const struct cio2_sensor_config *cfg =
-			&cio2_supported_sensors[i];
-
-		ret = cio2_bridge_connect_sensor(cfg, bridge, cio2);
-		if (ret)
-			goto err_unregister_sensors;
-	}
-
-	return 0;
-
-err_unregister_sensors:
-	cio2_bridge_unregister_sensors(bridge);
-	return ret;
-}
-
-int cio2_bridge_init(struct pci_dev *cio2)
-{
-	struct device *dev = &cio2->dev;
-	struct fwnode_handle *fwnode;
-	struct cio2_bridge *bridge;
-	unsigned int i;
-	int ret;
-
-	bridge = kzalloc(sizeof(*bridge), GFP_KERNEL);
-	if (!bridge)
-		return -ENOMEM;
-
-	strscpy(bridge->cio2_node_name, CIO2_HID,
-		sizeof(bridge->cio2_node_name));
-	bridge->cio2_hid_node.name = bridge->cio2_node_name;
-
-	ret = software_node_register(&bridge->cio2_hid_node);
-	if (ret < 0) {
-		dev_err(dev, "Failed to register the CIO2 HID node\n");
-		goto err_free_bridge;
-	}
-
-	/*
-	 * Map the lane arrangement, which is fixed for the IPU3 (meaning we
-	 * only need one, rather than one per sensor). We include it as a
-	 * member of the struct cio2_bridge rather than a global variable so
-	 * that it survives if the module is unloaded along with the rest of
-	 * the struct.
-	 */
-	for (i = 0; i < CIO2_MAX_LANES; i++)
-		bridge->data_lanes[i] = i + 1;
-
-	ret = cio2_bridge_connect_sensors(bridge, cio2);
-	if (ret || bridge->n_sensors == 0)
-		goto err_unregister_cio2;
-
-	dev_info(dev, "Connected %d cameras\n", bridge->n_sensors);
-
-	fwnode = software_node_fwnode(&bridge->cio2_hid_node);
-	if (!fwnode) {
-		dev_err(dev, "Error getting fwnode from cio2 software_node\n");
-		ret = -ENODEV;
-		goto err_unregister_sensors;
-	}
-
-	set_secondary_fwnode(dev, fwnode);
-
-	return 0;
-
-err_unregister_sensors:
-	cio2_bridge_unregister_sensors(bridge);
-err_unregister_cio2:
-	software_node_unregister(&bridge->cio2_hid_node);
-err_free_bridge:
-	kfree(bridge);
-
-	return ret;
-}