Update Linux to v5.10.109
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz
Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/include/linux/fwnode.h b/include/linux/fwnode.h
index ababd6b..9506f8e 100644
--- a/include/linux/fwnode.h
+++ b/include/linux/fwnode.h
@@ -17,6 +17,7 @@
struct fwnode_handle {
struct fwnode_handle *secondary;
const struct fwnode_operations *ops;
+ struct device *dev;
};
/**
@@ -49,13 +50,15 @@
* struct fwnode_operations - Operations for fwnode interface
* @get: Get a reference to an fwnode.
* @put: Put a reference to an fwnode.
+ * @device_is_available: Return true if the device is available.
* @device_get_match_data: Return the device driver match data.
* @property_present: Return true if a property is present.
- * @property_read_integer_array: Read an array of integer properties. Return
- * zero on success, a negative error code
- * otherwise.
+ * @property_read_int_array: Read an array of integer properties. Return zero on
+ * success, a negative error code otherwise.
* @property_read_string_array: Read an array of string properties. Return zero
* on success, a negative error code otherwise.
+ * @get_name: Return the name of an fwnode.
+ * @get_name_prefix: Get a prefix for a node (for printing purposes).
* @get_parent: Return the parent of an fwnode.
* @get_next_child_node: Return the next child node in an iteration.
* @get_named_child_node: Return a child node with a given name.
@@ -65,6 +68,44 @@
* endpoint node.
* @graph_get_port_parent: Return the parent node of a port node.
* @graph_parse_endpoint: Parse endpoint for port and endpoint id.
+ * @add_links: Called after the device corresponding to the fwnode is added
+ * using device_add(). The function is expected to create device
+ * links to all the suppliers of the device that are available at
+ * the time this function is called. The function must NOT stop
+ * at the first failed device link if other unlinked supplier
+ * devices are present in the system. This is necessary for the
+ * driver/bus sync_state() callbacks to work correctly.
+ *
+ * For example, say Device-C depends on suppliers Device-S1 and
+ * Device-S2 and the dependency is listed in that order in the
+ * firmware. Say, S1 gets populated from the firmware after
+ * late_initcall_sync(). Say S2 is populated and probed way
+ * before that in device_initcall(). When C is populated, if this
+ * add_links() function doesn't continue past a "failed linking to
+ * S1" and continue linking C to S2, then S2 will get a
+ * sync_state() callback before C is probed. This is because from
+ * the perspective of S2, C was never a consumer when its
+ * sync_state() evaluation is done. To avoid this, the add_links()
+ * function has to go through all available suppliers of the
+ * device (that corresponds to this fwnode) and link to them
+ * before returning.
+ *
+ * If some suppliers are not yet available (indicated by an error
+ * return value), this function will be called again when other
+ * devices are added to allow creating device links to any newly
+ * available suppliers.
+ *
+ * Return 0 if device links have been successfully created to all
+ * the known suppliers of this device or if the supplier
+ * information is not known.
+ *
+ * Return -ENODEV if the suppliers needed for probing this device
+ * have not been registered yet (because device links can only be
+ * created to devices registered with the driver core).
+ *
+ * Return -EAGAIN if some of the suppliers of this device have not
+ * been registered yet, but none of those suppliers are necessary
+ * for probing the device.
*/
struct fwnode_operations {
struct fwnode_handle *(*get)(struct fwnode_handle *fwnode);
@@ -82,6 +123,8 @@
(*property_read_string_array)(const struct fwnode_handle *fwnode_handle,
const char *propname, const char **val,
size_t nval);
+ const char *(*get_name)(const struct fwnode_handle *fwnode);
+ const char *(*get_name_prefix)(const struct fwnode_handle *fwnode);
struct fwnode_handle *(*get_parent)(const struct fwnode_handle *fwnode);
struct fwnode_handle *
(*get_next_child_node)(const struct fwnode_handle *fwnode,
@@ -102,6 +145,8 @@
(*graph_get_port_parent)(struct fwnode_handle *fwnode);
int (*graph_parse_endpoint)(const struct fwnode_handle *fwnode,
struct fwnode_endpoint *endpoint);
+ int (*add_links)(const struct fwnode_handle *fwnode,
+ struct device *dev);
};
#define fwnode_has_op(fwnode, op) \
@@ -123,5 +168,10 @@
if (fwnode_has_op(fwnode, op)) \
(fwnode)->ops->op(fwnode, ## __VA_ARGS__); \
} while (false)
+#define get_dev_from_fwnode(fwnode) get_device((fwnode)->dev)
+
+extern u32 fw_devlink_get_flags(void);
+void fw_devlink_pause(void);
+void fw_devlink_resume(void);
#endif