diff options
-rw-r--r-- | drivers/acpi/property.c | 40 | ||||
-rw-r--r-- | drivers/base/property.c | 91 | ||||
-rw-r--r-- | drivers/of/property.c | 52 | ||||
-rw-r--r-- | include/linux/fwnode.h | 14 |
4 files changed, 114 insertions, 83 deletions
diff --git a/drivers/acpi/property.c b/drivers/acpi/property.c index 14013f635db6..a24ca61294eb 100644 --- a/drivers/acpi/property.c +++ b/drivers/acpi/property.c @@ -1179,6 +1179,42 @@ acpi_fwnode_get_named_child_node(struct fwnode_handle *fwnode, return NULL; } +static struct fwnode_handle * +acpi_fwnode_graph_get_next_endpoint(struct fwnode_handle *fwnode, + struct fwnode_handle *prev) +{ + struct fwnode_handle *endpoint; + + endpoint = acpi_graph_get_next_endpoint(fwnode, prev); + if (IS_ERR(endpoint)) + return NULL; + + return endpoint; +} + +static struct fwnode_handle * +acpi_fwnode_graph_get_remote_endpoint(struct fwnode_handle *fwnode) +{ + struct fwnode_handle *endpoint = NULL; + + acpi_graph_get_remote_endpoint(fwnode, NULL, NULL, &endpoint); + + return endpoint; +} + +static int acpi_fwnode_graph_parse_endpoint(struct fwnode_handle *fwnode, + struct fwnode_endpoint *endpoint) +{ + struct fwnode_handle *port_fwnode = fwnode_get_parent(fwnode); + + endpoint->local_fwnode = fwnode; + + fwnode_property_read_u32(port_fwnode, "port", &endpoint->port); + fwnode_property_read_u32(fwnode, "endpoint", &endpoint->id); + + return 0; +} + const struct fwnode_operations acpi_fwnode_ops = { .property_present = acpi_fwnode_property_present, .property_read_int_array = acpi_fwnode_property_read_int_array, @@ -1186,4 +1222,8 @@ const struct fwnode_operations acpi_fwnode_ops = { .get_parent = acpi_node_get_parent, .get_next_child_node = acpi_get_next_subnode, .get_named_child_node = acpi_fwnode_get_named_child_node, + .graph_get_next_endpoint = acpi_fwnode_graph_get_next_endpoint, + .graph_get_remote_endpoint = acpi_fwnode_graph_get_remote_endpoint, + .graph_get_port_parent = acpi_node_get_parent, + .graph_parse_endpoint = acpi_fwnode_graph_parse_endpoint, }; diff --git a/drivers/base/property.c b/drivers/base/property.c index fee0705e40e9..e1a58ac8840e 100644 --- a/drivers/base/property.c +++ b/drivers/base/property.c @@ -1156,24 +1156,7 @@ struct fwnode_handle * fwnode_graph_get_next_endpoint(struct fwnode_handle *fwnode, struct fwnode_handle *prev) { - struct fwnode_handle *endpoint = NULL; - - if (is_of_node(fwnode)) { - struct device_node *node; - - node = of_graph_get_next_endpoint(to_of_node(fwnode), - to_of_node(prev)); - - if (node) - endpoint = &node->fwnode; - } else if (is_acpi_node(fwnode)) { - endpoint = acpi_graph_get_next_endpoint(fwnode, prev); - if (IS_ERR(endpoint)) - endpoint = NULL; - } - - return endpoint; - + return fwnode_call_ptr_op(fwnode, graph_get_next_endpoint, prev); } EXPORT_SYMBOL_GPL(fwnode_graph_get_next_endpoint); @@ -1186,22 +1169,12 @@ EXPORT_SYMBOL_GPL(fwnode_graph_get_next_endpoint); struct fwnode_handle * fwnode_graph_get_remote_port_parent(struct fwnode_handle *fwnode) { - struct fwnode_handle *parent = NULL; + struct fwnode_handle *port, *parent; - if (is_of_node(fwnode)) { - struct device_node *node; + port = fwnode_graph_get_remote_port(fwnode); + parent = fwnode_call_ptr_op(port, graph_get_port_parent); - node = of_graph_get_remote_port_parent(to_of_node(fwnode)); - if (node) - parent = &node->fwnode; - } else if (is_acpi_node(fwnode)) { - int ret; - - ret = acpi_graph_get_remote_endpoint(fwnode, &parent, NULL, - NULL); - if (ret) - return NULL; - } + fwnode_handle_put(port); return parent; } @@ -1215,23 +1188,7 @@ EXPORT_SYMBOL_GPL(fwnode_graph_get_remote_port_parent); */ struct fwnode_handle *fwnode_graph_get_remote_port(struct fwnode_handle *fwnode) { - struct fwnode_handle *port = NULL; - - if (is_of_node(fwnode)) { - struct device_node *node; - - node = of_graph_get_remote_port(to_of_node(fwnode)); - if (node) - port = &node->fwnode; - } else if (is_acpi_node(fwnode)) { - int ret; - - ret = acpi_graph_get_remote_endpoint(fwnode, NULL, &port, NULL); - if (ret) - return NULL; - } - - return port; + return fwnode_get_next_parent(fwnode_graph_get_remote_endpoint(fwnode)); } EXPORT_SYMBOL_GPL(fwnode_graph_get_remote_port); @@ -1244,25 +1201,7 @@ EXPORT_SYMBOL_GPL(fwnode_graph_get_remote_port); struct fwnode_handle * fwnode_graph_get_remote_endpoint(struct fwnode_handle *fwnode) { - struct fwnode_handle *endpoint = NULL; - - if (is_of_node(fwnode)) { - struct device_node *node; - - node = of_parse_phandle(to_of_node(fwnode), "remote-endpoint", - 0); - if (node) - endpoint = &node->fwnode; - } else if (is_acpi_node(fwnode)) { - int ret; - - ret = acpi_graph_get_remote_endpoint(fwnode, NULL, NULL, - &endpoint); - if (ret) - return NULL; - } - - return endpoint; + return fwnode_call_ptr_op(fwnode, graph_get_remote_endpoint); } EXPORT_SYMBOL_GPL(fwnode_graph_get_remote_endpoint); @@ -1278,22 +1217,8 @@ EXPORT_SYMBOL_GPL(fwnode_graph_get_remote_endpoint); int fwnode_graph_parse_endpoint(struct fwnode_handle *fwnode, struct fwnode_endpoint *endpoint) { - struct fwnode_handle *port_fwnode = fwnode_get_parent(fwnode); - memset(endpoint, 0, sizeof(*endpoint)); - endpoint->local_fwnode = fwnode; - - if (is_acpi_node(port_fwnode)) { - fwnode_property_read_u32(port_fwnode, "port", &endpoint->port); - fwnode_property_read_u32(fwnode, "endpoint", &endpoint->id); - } else { - fwnode_property_read_u32(port_fwnode, "reg", &endpoint->port); - fwnode_property_read_u32(fwnode, "reg", &endpoint->id); - } - - fwnode_handle_put(port_fwnode); - - return 0; + return fwnode_call_int_op(fwnode, graph_parse_endpoint, endpoint); } EXPORT_SYMBOL(fwnode_graph_parse_endpoint); diff --git a/drivers/of/property.c b/drivers/of/property.c index 250859234fb0..e859e41e33f3 100644 --- a/drivers/of/property.c +++ b/drivers/of/property.c @@ -844,6 +844,54 @@ of_fwnode_get_named_child_node(struct fwnode_handle *fwnode, return NULL; } +static struct fwnode_handle * +of_fwnode_graph_get_next_endpoint(struct fwnode_handle *fwnode, + struct fwnode_handle *prev) +{ + return of_fwnode_handle(of_graph_get_next_endpoint(to_of_node(fwnode), + to_of_node(prev))); +} + +static struct fwnode_handle * +of_fwnode_graph_get_remote_endpoint(struct fwnode_handle *fwnode) +{ + return of_fwnode_handle(of_parse_phandle(to_of_node(fwnode), + "remote-endpoint", 0)); +} + +static struct fwnode_handle * +of_fwnode_graph_get_port_parent(struct fwnode_handle *fwnode) +{ + struct device_node *np; + + /* Get the parent of the port */ + np = of_get_next_parent(to_of_node(fwnode)); + if (!np) + return NULL; + + /* Is this the "ports" node? If not, it's the port parent. */ + if (of_node_cmp(np->name, "ports")) + return of_fwnode_handle(np); + + return of_fwnode_handle(of_get_next_parent(np)); +} + +static int of_fwnode_graph_parse_endpoint(struct fwnode_handle *fwnode, + struct fwnode_endpoint *endpoint) +{ + struct device_node *node = to_of_node(fwnode); + struct device_node *port_node = of_get_parent(node); + + endpoint->local_fwnode = fwnode; + + of_property_read_u32(port_node, "reg", &endpoint->port); + of_property_read_u32(node, "reg", &endpoint->id); + + of_node_put(port_node); + + return 0; +} + const struct fwnode_operations of_fwnode_ops = { .get = of_fwnode_get, .put = of_fwnode_put, @@ -853,4 +901,8 @@ const struct fwnode_operations of_fwnode_ops = { .get_parent = of_fwnode_get_parent, .get_next_child_node = of_fwnode_get_next_child_node, .get_named_child_node = of_fwnode_get_named_child_node, + .graph_get_next_endpoint = of_fwnode_graph_get_next_endpoint, + .graph_get_remote_endpoint = of_fwnode_graph_get_remote_endpoint, + .graph_get_port_parent = of_fwnode_graph_get_port_parent, + .graph_parse_endpoint = of_fwnode_graph_parse_endpoint, }; diff --git a/include/linux/fwnode.h b/include/linux/fwnode.h index 8f64b3ae9c57..e315d867d631 100644 --- a/include/linux/fwnode.h +++ b/include/linux/fwnode.h @@ -57,6 +57,11 @@ struct fwnode_endpoint { * @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. + * @graph_get_next_endpoint: Return an endpoint node in an iteration. + * @graph_get_remote_endpoint: Return the remote endpoint node of a local + * endpoint node. + * @graph_get_port_parent: Return the parent node of a port node. + * @graph_parse_endpoint: Parse endpoint for port and endpoint id. */ struct fwnode_operations { void (*get)(struct fwnode_handle *fwnode); @@ -76,6 +81,15 @@ struct fwnode_operations { struct fwnode_handle *child); struct fwnode_handle * (*get_named_child_node)(struct fwnode_handle *fwnode, const char *name); + struct fwnode_handle * + (*graph_get_next_endpoint)(struct fwnode_handle *fwnode, + struct fwnode_handle *prev); + struct fwnode_handle * + (*graph_get_remote_endpoint)(struct fwnode_handle *fwnode); + struct fwnode_handle * + (*graph_get_port_parent)(struct fwnode_handle *fwnode); + int (*graph_parse_endpoint)(struct fwnode_handle *fwnode, + struct fwnode_endpoint *endpoint); }; #define fwnode_has_op(fwnode, op) \ |