linux-4.4.1/of_platform_bus_create() の変更点

• 追加された行はこの色です。
• 削除された行はこの色です。
• linux-4.4.1/of_platform_bus_create() へ行く。
• linux-4.4.1/of_platform_bus_create() の差分を削除

*参照元 [#x4be5a2e]
#backlinks

*説明 [#qfcb6b7a]
-パス: [[linux-4.4.1/drivers/of/platform.c]]

-FIXME: これは何？
--説明


**引数 [#aa80daaf]
-struct device_node *bus
--
--[[linux-4.4.1/device_node]]
-const struct of_device_id *matches
--
--[[linux-4.4.1/of_device_id]]
-const struct of_dev_auxdata *lookup
--
--[[linux-4.4.1/of_dev_auxdata]]
-struct device *parent
--
--[[linux-4.4.1/device]]
-bool strict
--


**返り値 [#a6c7e460]
-int
--


**参考 [#xd434490]


*実装 [#j3e052f0]
 /**
  * of_platform_bus_create() - Create a device for a node and its children.
  * @bus: device node of the bus to instantiate
  * @matches: match table for bus nodes
  * @lookup: auxdata table for matching id and platform_data with device nodes
  * @parent: parent for new device, or NULL for top level.
  * @strict: require compatible property
  *
  * Creates a platform_device for the provided device_node, and optionally
  * recursively create devices for all the child nodes.
  */
 static int of_platform_bus_create(struct device_node *bus,
                                   const struct of_device_id *matches,
                                   const struct of_dev_auxdata *lookup,
                                   struct device *parent, bool strict)
 {
         const struct of_dev_auxdata *auxdata;
         struct device_node *child;
         struct platform_device *dev;
         const char *bus_id = NULL;
         void *platform_data = NULL;
         int rc = 0;
 
-
--[[linux-4.4.1/of_dev_auxdata]]
--[[linux-4.4.1/devie_node]]
--[[linux-4.4.1/platform_device]]

         /* Make sure it has a compatible property */
         if (strict && (!of_get_property(bus, "compatible", NULL))) {
                 pr_debug("%s() - skipping %s, no compatible prop\n",
                          __func__, bus->full_name);
                 return 0;
         }
 
-
--[[linux-4.4.1/of_get_property()]]
--[[linux-4.4.1/pr_debug()]]

         auxdata = of_dev_lookup(lookup, bus);
         if (auxdata) {
                 bus_id = auxdata->name;
                 platform_data = auxdata->platform_data;
         }
 
-
--[[linux-4.4.1/of_dev_lookup()]]

         if (of_device_is_compatible(bus, "arm,primecell")) {
                 /*
                  * Don't return an error here to keep compatibility with older
                  * device tree files.
                  */
                 of_amba_device_create(bus, bus_id, platform_data, parent);
                 return 0;
         }
 
-
--[[linux-4.4.1/of_device_is_compatible()]]
--[[linux-4.4.1/of_amba_device_create()]]

         dev = of_platform_device_create_pdata(bus, bus_id, platform_data, parent);
         if (!dev || !of_match_node(matches, bus))
                 return 0;
 
-
--[[linux-4.4.1/of_platform_device_create_pdata()]]
--[[linux-4.4.1/of_match_node()]]

         for_each_child_of_node(bus, child) {
                 pr_debug("   create child: %s\n", child->full_name);
                 rc = of_platform_bus_create(child, matches, lookup, &dev->dev, strict);
                 if (rc) {
                         of_node_put(child);
                         break;
                 }
         }
         of_node_set_flag(bus, OF_POPULATED_BUS);
-
--[[linux-4.4.1/for_each_child_of_node()]]
--[[linux-4.4.1/of_platform_bus_create()]]
--[[linux-4.4.1/of_node_put()]]
--[[linux-4.4.1/of_node_set_flag()]]

         return rc;
 }


*コメント [#u688871d]