The current practice is that drivers iterate over their endpoints and
parse each endpoint separately. This is very similar in a number of
drivers, implement a generic function for the job. Driver specific matters
can be taken into account in the driver specific callback.

Convert the omap3isp as an example.

Signed-off-by: Sakari Ailus <sakari.ai...@linux.intel.com>
---
 drivers/media/platform/omap3isp/isp.c | 115 ++++++++++-------------------
 drivers/media/platform/omap3isp/isp.h |   5 +-
 drivers/media/v4l2-core/v4l2-async.c  |  16 +++++
 drivers/media/v4l2-core/v4l2-fwnode.c | 131 ++++++++++++++++++++++++++++++++++
 include/media/v4l2-async.h            |  24 ++++++-
 include/media/v4l2-fwnode.h           |  48 +++++++++++++
 6 files changed, 254 insertions(+), 85 deletions(-)

diff --git a/drivers/media/platform/omap3isp/isp.c 
b/drivers/media/platform/omap3isp/isp.c
index 1a428fe9f070..a546cf774d40 100644
--- a/drivers/media/platform/omap3isp/isp.c
+++ b/drivers/media/platform/omap3isp/isp.c
@@ -2001,6 +2001,7 @@ static int isp_remove(struct platform_device *pdev)
        __omap3isp_put(isp, false);
 
        media_entity_enum_cleanup(&isp->crashed);
+       v4l2_async_notifier_release(&isp->notifier);
 
        return 0;
 }
@@ -2011,44 +2012,41 @@ enum isp_of_phy {
        ISP_OF_PHY_CSIPHY2,
 };
 
-static int isp_fwnode_parse(struct device *dev, struct fwnode_handle *fwnode,
-                           struct isp_async_subdev *isd)
+static int isp_fwnode_parse(struct device *dev,
+                           struct v4l2_fwnode_endpoint *vep,
+                           struct v4l2_async_subdev *asd)
 {
+       struct isp_async_subdev *isd =
+               container_of(asd, struct isp_async_subdev, asd);
        struct isp_bus_cfg *buscfg = &isd->bus;
-       struct v4l2_fwnode_endpoint vep;
-       unsigned int i;
-       int ret;
        bool csi1 = false;
-
-       ret = v4l2_fwnode_endpoint_parse(fwnode, &vep);
-       if (ret)
-               return ret;
+       unsigned int i;
 
        dev_dbg(dev, "parsing endpoint %pOF, interface %u\n",
-               to_of_node(fwnode), vep.base.port);
+               to_of_node(vep->base.local_fwnode), vep->base.port);
 
-       switch (vep.base.port) {
+       switch (vep->base.port) {
        case ISP_OF_PHY_PARALLEL:
                buscfg->interface = ISP_INTERFACE_PARALLEL;
                buscfg->bus.parallel.data_lane_shift =
-                       vep.bus.parallel.data_shift;
+                       vep->bus.parallel.data_shift;
                buscfg->bus.parallel.clk_pol =
-                       !!(vep.bus.parallel.flags
+                       !!(vep->bus.parallel.flags
                           & V4L2_MBUS_PCLK_SAMPLE_FALLING);
                buscfg->bus.parallel.hs_pol =
-                       !!(vep.bus.parallel.flags & V4L2_MBUS_VSYNC_ACTIVE_LOW);
+                       !!(vep->bus.parallel.flags & 
V4L2_MBUS_VSYNC_ACTIVE_LOW);
                buscfg->bus.parallel.vs_pol =
-                       !!(vep.bus.parallel.flags & V4L2_MBUS_HSYNC_ACTIVE_LOW);
+                       !!(vep->bus.parallel.flags & 
V4L2_MBUS_HSYNC_ACTIVE_LOW);
                buscfg->bus.parallel.fld_pol =
-                       !!(vep.bus.parallel.flags & V4L2_MBUS_FIELD_EVEN_LOW);
+                       !!(vep->bus.parallel.flags & V4L2_MBUS_FIELD_EVEN_LOW);
                buscfg->bus.parallel.data_pol =
-                       !!(vep.bus.parallel.flags & V4L2_MBUS_DATA_ACTIVE_LOW);
-               buscfg->bus.parallel.bt656 = vep.bus_type == V4L2_MBUS_BT656;
+                       !!(vep->bus.parallel.flags & V4L2_MBUS_DATA_ACTIVE_LOW);
+               buscfg->bus.parallel.bt656 = vep->bus_type == V4L2_MBUS_BT656;
                break;
 
        case ISP_OF_PHY_CSIPHY1:
        case ISP_OF_PHY_CSIPHY2:
-               switch (vep.bus_type) {
+               switch (vep->bus_type) {
                case V4L2_MBUS_CCP2:
                case V4L2_MBUS_CSI1:
                        dev_dbg(dev, "CSI-1/CCP-2 configuration\n");
@@ -2060,11 +2058,11 @@ static int isp_fwnode_parse(struct device *dev, struct 
fwnode_handle *fwnode,
                        break;
                default:
                        dev_err(dev, "unsupported bus type %u\n",
-                               vep.bus_type);
+                               vep->bus_type);
                        return -EINVAL;
                }
 
-               switch (vep.base.port) {
+               switch (vep->base.port) {
                case ISP_OF_PHY_CSIPHY1:
                        if (csi1)
                                buscfg->interface = ISP_INTERFACE_CCP2B_PHY1;
@@ -2080,47 +2078,47 @@ static int isp_fwnode_parse(struct device *dev, struct 
fwnode_handle *fwnode,
                }
                if (csi1) {
                        buscfg->bus.ccp2.lanecfg.clk.pos =
-                               vep.bus.mipi_csi1.clock_lane;
+                               vep->bus.mipi_csi1.clock_lane;
                        buscfg->bus.ccp2.lanecfg.clk.pol =
-                               vep.bus.mipi_csi1.lane_polarity[0];
+                               vep->bus.mipi_csi1.lane_polarity[0];
                        dev_dbg(dev, "clock lane polarity %u, pos %u\n",
                                buscfg->bus.ccp2.lanecfg.clk.pol,
                                buscfg->bus.ccp2.lanecfg.clk.pos);
 
                        buscfg->bus.ccp2.lanecfg.data[0].pos =
-                               vep.bus.mipi_csi1.data_lane;
+                               vep->bus.mipi_csi1.data_lane;
                        buscfg->bus.ccp2.lanecfg.data[0].pol =
-                               vep.bus.mipi_csi1.lane_polarity[1];
+                               vep->bus.mipi_csi1.lane_polarity[1];
 
                        dev_dbg(dev, "data lane polarity %u, pos %u\n",
                                buscfg->bus.ccp2.lanecfg.data[0].pol,
                                buscfg->bus.ccp2.lanecfg.data[0].pos);
 
                        buscfg->bus.ccp2.strobe_clk_pol =
-                               vep.bus.mipi_csi1.clock_inv;
-                       buscfg->bus.ccp2.phy_layer = vep.bus.mipi_csi1.strobe;
+                               vep->bus.mipi_csi1.clock_inv;
+                       buscfg->bus.ccp2.phy_layer = vep->bus.mipi_csi1.strobe;
                        buscfg->bus.ccp2.ccp2_mode =
-                               vep.bus_type == V4L2_MBUS_CCP2;
+                               vep->bus_type == V4L2_MBUS_CCP2;
                        buscfg->bus.ccp2.vp_clk_pol = 1;
 
                        buscfg->bus.ccp2.crc = 1;
                } else {
                        buscfg->bus.csi2.lanecfg.clk.pos =
-                               vep.bus.mipi_csi2.clock_lane;
+                               vep->bus.mipi_csi2.clock_lane;
                        buscfg->bus.csi2.lanecfg.clk.pol =
-                               vep.bus.mipi_csi2.lane_polarities[0];
+                               vep->bus.mipi_csi2.lane_polarities[0];
                        dev_dbg(dev, "clock lane polarity %u, pos %u\n",
                                buscfg->bus.csi2.lanecfg.clk.pol,
                                buscfg->bus.csi2.lanecfg.clk.pos);
 
                        buscfg->bus.csi2.num_data_lanes =
-                               vep.bus.mipi_csi2.num_data_lanes;
+                               vep->bus.mipi_csi2.num_data_lanes;
 
                        for (i = 0; i < buscfg->bus.csi2.num_data_lanes; i++) {
                                buscfg->bus.csi2.lanecfg.data[i].pos =
-                                       vep.bus.mipi_csi2.data_lanes[i];
+                                       vep->bus.mipi_csi2.data_lanes[i];
                                buscfg->bus.csi2.lanecfg.data[i].pol =
-                                       vep.bus.mipi_csi2.lane_polarities[i + 
1];
+                                       vep->bus.mipi_csi2.lane_polarities[i + 
1];
                                dev_dbg(dev,
                                        "data lane %u polarity %u, pos %u\n", i,
                                        buscfg->bus.csi2.lanecfg.data[i].pol,
@@ -2137,57 +2135,13 @@ static int isp_fwnode_parse(struct device *dev, struct 
fwnode_handle *fwnode,
 
        default:
                dev_warn(dev, "%pOF: invalid interface %u\n",
-                        to_of_node(fwnode), vep.base.port);
+                        to_of_node(vep->base.local_fwnode), vep->base.port);
                return -EINVAL;
        }
 
        return 0;
 }
 
-static int isp_fwnodes_parse(struct device *dev,
-                            struct v4l2_async_notifier *notifier)
-{
-       struct fwnode_handle *fwnode = NULL;
-
-       notifier->subdevs = devm_kcalloc(
-               dev, ISP_MAX_SUBDEVS, sizeof(*notifier->subdevs), GFP_KERNEL);
-       if (!notifier->subdevs)
-               return -ENOMEM;
-
-       while (notifier->num_subdevs < ISP_MAX_SUBDEVS &&
-              (fwnode = fwnode_graph_get_next_endpoint(
-                       of_fwnode_handle(dev->of_node), fwnode))) {
-               struct isp_async_subdev *isd;
-
-               isd = devm_kzalloc(dev, sizeof(*isd), GFP_KERNEL);
-               if (!isd)
-                       goto error;
-
-               if (isp_fwnode_parse(dev, fwnode, isd)) {
-                       devm_kfree(dev, isd);
-                       continue;
-               }
-
-               notifier->subdevs[notifier->num_subdevs] = &isd->asd;
-
-               isd->asd.match.fwnode.fwnode =
-                       fwnode_graph_get_remote_port_parent(fwnode);
-               if (!isd->asd.match.fwnode.fwnode) {
-                       dev_warn(dev, "bad remote port parent\n");
-                       goto error;
-               }
-
-               isd->asd.match_type = V4L2_ASYNC_MATCH_FWNODE;
-               notifier->num_subdevs++;
-       }
-
-       return notifier->num_subdevs;
-
-error:
-       fwnode_handle_put(fwnode);
-       return -EINVAL;
-}
-
 static int isp_subdev_notifier_complete(struct v4l2_async_notifier *async)
 {
        struct isp_device *isp = container_of(async, struct isp_device,
@@ -2256,7 +2210,9 @@ static int isp_probe(struct platform_device *pdev)
        if (ret)
                return ret;
 
-       ret = isp_fwnodes_parse(&pdev->dev, &isp->notifier);
+       ret = v4l2_async_notifier_parse_fwnode_endpoints(
+               &pdev->dev, &isp->notifier, sizeof(struct isp_async_subdev),
+               isp_fwnode_parse);
        if (ret < 0)
                return ret;
 
@@ -2407,6 +2363,7 @@ static int isp_probe(struct platform_device *pdev)
        __omap3isp_put(isp, false);
 error:
        mutex_destroy(&isp->isp_mutex);
+       v4l2_async_notifier_release(&isp->notifier);
 
        return ret;
 }
diff --git a/drivers/media/platform/omap3isp/isp.h 
b/drivers/media/platform/omap3isp/isp.h
index e528df6efc09..8b9043db94b3 100644
--- a/drivers/media/platform/omap3isp/isp.h
+++ b/drivers/media/platform/omap3isp/isp.h
@@ -220,14 +220,11 @@ struct isp_device {
 
        unsigned int sbl_resources;
        unsigned int subclk_resources;
-
-#define ISP_MAX_SUBDEVS                8
-       struct v4l2_subdev *subdevs[ISP_MAX_SUBDEVS];
 };
 
 struct isp_async_subdev {
-       struct isp_bus_cfg bus;
        struct v4l2_async_subdev asd;
+       struct isp_bus_cfg bus;
 };
 
 #define v4l2_subdev_to_bus_cfg(sd) \
diff --git a/drivers/media/v4l2-core/v4l2-async.c 
b/drivers/media/v4l2-core/v4l2-async.c
index 851f128eba22..c490acf5ae82 100644
--- a/drivers/media/v4l2-core/v4l2-async.c
+++ b/drivers/media/v4l2-core/v4l2-async.c
@@ -22,6 +22,7 @@
 
 #include <media/v4l2-async.h>
 #include <media/v4l2-device.h>
+#include <media/v4l2-fwnode.h>
 #include <media/v4l2-subdev.h>
 
 static bool match_i2c(struct v4l2_subdev *sd, struct v4l2_async_subdev *asd)
@@ -278,6 +279,21 @@ void v4l2_async_notifier_unregister(struct 
v4l2_async_notifier *notifier)
 }
 EXPORT_SYMBOL(v4l2_async_notifier_unregister);
 
+void v4l2_async_notifier_release(struct v4l2_async_notifier *notifier)
+{
+       unsigned int i;
+
+       if (!notifier->max_subdevs)
+               return;
+
+       for (i = 0; i < notifier->num_subdevs; i++)
+               kfree(notifier->subdevs[i]);
+
+       kvfree(notifier->subdevs);
+       notifier->max_subdevs = 0;
+}
+EXPORT_SYMBOL_GPL(v4l2_async_notifier_release);
+
 int v4l2_async_register_subdev(struct v4l2_subdev *sd)
 {
        struct v4l2_async_notifier *notifier;
diff --git a/drivers/media/v4l2-core/v4l2-fwnode.c 
b/drivers/media/v4l2-core/v4l2-fwnode.c
index 706f9e7b90f1..2496d76eef4b 100644
--- a/drivers/media/v4l2-core/v4l2-fwnode.c
+++ b/drivers/media/v4l2-core/v4l2-fwnode.c
@@ -19,6 +19,7 @@
  */
 #include <linux/acpi.h>
 #include <linux/kernel.h>
+#include <linux/mm.h>
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/property.h>
@@ -26,6 +27,7 @@
 #include <linux/string.h>
 #include <linux/types.h>
 
+#include <media/v4l2-async.h>
 #include <media/v4l2-fwnode.h>
 
 enum v4l2_fwnode_bus_type {
@@ -313,6 +315,135 @@ void v4l2_fwnode_put_link(struct v4l2_fwnode_link *link)
 }
 EXPORT_SYMBOL_GPL(v4l2_fwnode_put_link);
 
+static int v4l2_async_notifier_realloc(struct v4l2_async_notifier *notifier,
+                                      unsigned int max_subdevs)
+{
+       struct v4l2_async_subdev **subdevs;
+
+       if (max_subdevs <= notifier->max_subdevs)
+               return 0;
+
+       subdevs = kvmalloc_array(
+               max_subdevs, sizeof(*notifier->subdevs),
+               GFP_KERNEL | __GFP_ZERO);
+       if (!subdevs)
+               return -ENOMEM;
+
+       if (notifier->subdevs) {
+               memcpy(subdevs, notifier->subdevs,
+                      sizeof(*subdevs) * notifier->num_subdevs);
+
+               kvfree(notifier->subdevs);
+       }
+
+       notifier->subdevs = subdevs;
+       notifier->max_subdevs = max_subdevs;
+
+       return 0;
+}
+
+static int v4l2_async_notifier_fwnode_parse_endpoint(
+       struct device *dev, struct v4l2_async_notifier *notifier,
+       struct fwnode_handle *endpoint, unsigned int asd_struct_size,
+       int (*parse_single)(struct device *dev,
+                           struct v4l2_fwnode_endpoint *vep,
+                           struct v4l2_async_subdev *asd))
+{
+       struct v4l2_async_subdev *asd;
+       struct v4l2_fwnode_endpoint *vep;
+       int ret = 0;
+
+       asd = kzalloc(asd_struct_size, GFP_KERNEL);
+       if (!asd)
+               return -ENOMEM;
+
+       asd->match.fwnode.fwnode =
+               fwnode_graph_get_remote_port_parent(endpoint);
+       if (!asd->match.fwnode.fwnode) {
+               dev_warn(dev, "bad remote port parent\n");
+               ret = -EINVAL;
+               goto out_err;
+       }
+
+       /* Ignore endpoints the parsing of which failed. */
+       vep = v4l2_fwnode_endpoint_alloc_parse(endpoint);
+       if (IS_ERR(vep)) {
+               ret = PTR_ERR(vep);
+               dev_warn(dev, "unable to parse V4L2 fwnode endpoint (%d)\n",
+                        ret);
+               goto out_err;
+       }
+
+       ret = parse_single(dev, vep, asd);
+       v4l2_fwnode_endpoint_free(vep);
+       if (ret) {
+               dev_warn(dev, "driver could not parse endpoint (%d)\n", ret);
+               goto out_err;
+       }
+
+       asd->match_type = V4L2_ASYNC_MATCH_FWNODE;
+       notifier->subdevs[notifier->num_subdevs] = asd;
+       notifier->num_subdevs++;
+
+       return 0;
+
+out_err:
+       fwnode_handle_put(asd->match.fwnode.fwnode);
+       kfree(asd);
+
+       return ret;
+}
+
+int v4l2_async_notifier_parse_fwnode_endpoints(
+       struct device *dev, struct v4l2_async_notifier *notifier,
+       size_t asd_struct_size,
+       int (*parse_single)(struct device *dev,
+                           struct v4l2_fwnode_endpoint *vep,
+                           struct v4l2_async_subdev *asd))
+{
+       struct fwnode_handle *fwnode = NULL;
+       unsigned int max_subdevs = notifier->max_subdevs;
+       int ret;
+
+       if (asd_struct_size < sizeof(struct v4l2_async_subdev) ||
+           notifier->v4l2_dev)
+               return -EINVAL;
+
+       for (fwnode = NULL; (fwnode = fwnode_graph_get_next_endpoint(
+                                    dev_fwnode(dev), fwnode)); )
+               if (fwnode_device_is_available(
+                           fwnode_graph_get_port_parent(fwnode)))
+                       max_subdevs++;
+
+       /* No subdevs to add? Return here. */
+       if (max_subdevs == notifier->max_subdevs)
+               return 0;
+
+       ret = v4l2_async_notifier_realloc(notifier, max_subdevs);
+       if (ret)
+               return ret;
+
+       for (fwnode = NULL; (fwnode = fwnode_graph_get_next_endpoint(
+                                    dev_fwnode(dev), fwnode)); ) {
+               if (!fwnode_device_is_available(
+                           fwnode_graph_get_port_parent(fwnode)))
+                       continue;
+
+               if (WARN_ON(notifier->num_subdevs >= notifier->max_subdevs))
+                       break;
+
+               ret = v4l2_async_notifier_fwnode_parse_endpoint(
+                       dev, notifier, fwnode, asd_struct_size, parse_single);
+               if (ret < 0)
+                       break;
+       }
+
+       fwnode_handle_put(fwnode);
+
+       return ret;
+}
+EXPORT_SYMBOL_GPL(v4l2_async_notifier_parse_fwnode_endpoints);
+
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Sakari Ailus <sakari.ai...@linux.intel.com>");
 MODULE_AUTHOR("Sylwester Nawrocki <s.nawro...@samsung.com>");
diff --git a/include/media/v4l2-async.h b/include/media/v4l2-async.h
index c69d8c8a66d0..cf13c7311a1c 100644
--- a/include/media/v4l2-async.h
+++ b/include/media/v4l2-async.h
@@ -18,7 +18,6 @@ struct device;
 struct device_node;
 struct v4l2_device;
 struct v4l2_subdev;
-struct v4l2_async_notifier;
 
 /* A random max subdevice number, used to allocate an array on stack */
 #define V4L2_MAX_SUBDEVS 128U
@@ -50,6 +49,10 @@ enum v4l2_async_match_type {
  * @match:     union of per-bus type matching data sets
  * @list:      used to link struct v4l2_async_subdev objects, waiting to be
  *             probed, to a notifier->waiting list
+ *
+ * When the struct is used as the first member of a driver specific
+ * struct, the driver specific struct shall contain the @struct
+ * v4l2_async_subdev as its first member.
  */
 struct v4l2_async_subdev {
        enum v4l2_async_match_type match_type;
@@ -78,7 +81,8 @@ struct v4l2_async_subdev {
 /**
  * struct v4l2_async_notifier - v4l2_device notifier data
  *
- * @num_subdevs: number of subdevices
+ * @num_subdevs: number of subdevices used in subdevs array
+ * @max_subdevs: number of subdevices allocated in subdevs array
  * @subdevs:   array of pointers to subdevice descriptors
  * @v4l2_dev:  pointer to struct v4l2_device
  * @waiting:   list of struct v4l2_async_subdev, waiting for their drivers
@@ -90,6 +94,7 @@ struct v4l2_async_subdev {
  */
 struct v4l2_async_notifier {
        unsigned int num_subdevs;
+       unsigned int max_subdevs;
        struct v4l2_async_subdev **subdevs;
        struct v4l2_device *v4l2_dev;
        struct list_head waiting;
@@ -121,6 +126,21 @@ int v4l2_async_notifier_register(struct v4l2_device 
*v4l2_dev,
 void v4l2_async_notifier_unregister(struct v4l2_async_notifier *notifier);
 
 /**
+ * v4l2_async_notifier_release - release notifier resources
+ * @notifier: the notifier the resources of which are to be released
+ *
+ * Release memory resources related to a notifier, including the async
+ * sub-devices allocated for the purposes of the notifier. The user is
+ * responsible for releasing the notifier's resources after calling
+ * @v4l2_async_notifier_parse_fwnode_endpoints.
+ *
+ * There is no harm from calling v4l2_async_notifier_release in other
+ * cases as long as its memory has been zeroed after it has been
+ * allocated.
+ */
+void v4l2_async_notifier_release(struct v4l2_async_notifier *notifier);
+
+/**
  * v4l2_async_register_subdev - registers a sub-device to the asynchronous
  *     subdevice framework
  *
diff --git a/include/media/v4l2-fwnode.h b/include/media/v4l2-fwnode.h
index 68eb22ba571b..d063ab4ff67b 100644
--- a/include/media/v4l2-fwnode.h
+++ b/include/media/v4l2-fwnode.h
@@ -25,6 +25,8 @@
 #include <media/v4l2-mediabus.h>
 
 struct fwnode_handle;
+struct v4l2_async_notifier;
+struct v4l2_async_subdev;
 
 #define V4L2_FWNODE_CSI2_MAX_DATA_LANES        4
 
@@ -201,4 +203,50 @@ int v4l2_fwnode_parse_link(struct fwnode_handle *fwnode,
  */
 void v4l2_fwnode_put_link(struct v4l2_fwnode_link *link);
 
+/**
+ * v4l2_async_notifier_parse_fwnode_endpoints - Parse V4L2 fwnode endpoints in 
a
+ *                                             device node
+ * @dev: the device the endpoints of which are to be parsed
+ * @notifier: notifier for @dev
+ * @asd_struct_size: size of the driver's async sub-device struct, including
+ *                  sizeof(struct v4l2_async_subdev). The &struct
+ *                  v4l2_async_subdev shall be the first member of
+ *                  the driver's async sub-device struct, i.e. both
+ *                  begin at the same memory address.
+ * @parse_single: driver's callback function called on each V4L2 fwnode 
endpoint
+ *
+ * Parse the fwnode endpoints of the @dev device and populate the async sub-
+ * devices array of the notifier. The @parse_endpoint callback function is
+ * called for each endpoint with the corresponding async sub-device pointer to
+ * let the caller initialize the driver-specific part of the async sub-device
+ * structure.
+ *
+ * The notifier memory shall be zeroed before this function is called on the
+ * notifier.
+ *
+ * This function may not be called on a registered notifier and may be called 
on
+ * a notifier only once. When using this function, the user may not access the
+ * notifier's subdevs array nor change notifier's num_subdevs field, these are
+ * reserved for the framework's internal use only.
+ *
+ * The @struct v4l2_fwnode_endpoint passed to the callback function
+ * @parse_single is released once the function is finished. If there is a need
+ * to retain that configuration, the user needs to allocate memory for it.
+ *
+ * Any notifier populated using this function must be released with a call to
+ * v4l2_async_notifier_release() after it has been unregistered and the async
+ * sub-devices are no longer in use.
+ *
+ * Return: %0 on success, including when no async sub-devices are found
+ *        %-ENOMEM if memory allocation failed
+ *        %-EINVAL if graph or endpoint parsing failed
+ *        Other error codes as returned by @parse_single
+ */
+int v4l2_async_notifier_parse_fwnode_endpoints(
+       struct device *dev, struct v4l2_async_notifier *notifier,
+       size_t asd_struct_size,
+       int (*parse_single)(struct device *dev,
+                           struct v4l2_fwnode_endpoint *vep,
+                           struct v4l2_async_subdev *asd));
+
 #endif /* _V4L2_FWNODE_H */
-- 
2.11.0

Reply via email to