linux-4.4.1/platform_device_add() の履歴(No.1)

• 履歴一覧
• 差分 を表示
• 現在との差分 を表示
• ソース を表示
• linux-4.4.1/platform_device_add() へ行く。
  • 1 (2016-02-15 (月) 00:23:16)

---

参照元†

• linux-4.4.1/platform_device_register()
• linux-4.4.1/platform_device_register_full()

説明†

• パス: linux-4.4.1/drivers/base/platform.c

• FIXME: これは何？
  • 説明

引数†

• struct platform_device *pdev
  • linux-4.4.1/platform_device

返り値†

• int

参考†

実装†

/**
 * platform_device_add - add a platform device to device hierarchy
 * @pdev: platform device we're adding
 *
 * This is part 2 of platform_device_register(), though may be called
 * separately _iff_ pdev was allocated by platform_device_alloc().
 */
int platform_device_add(struct platform_device *pdev)
{
        int i, ret;

        if (!pdev)
                return -EINVAL;

        if (!pdev->dev.parent)
                pdev->dev.parent = &platform_bus;

• • linux-4.4.1/platform_bus(global)

        pdev->dev.bus = &platform_bus_type;

• • linux-4.4.1/platform_bus_type(global)

        switch (pdev->id) {
        default:
                dev_set_name(&pdev->dev, "%s.%d", pdev->name,  pdev->id);
                break;

• • linux-4.4.1/dev_set_name()

        case PLATFORM_DEVID_NONE:
                dev_set_name(&pdev->dev, "%s", pdev->name);
                break;
        case PLATFORM_DEVID_AUTO:
                /*
                 * Automatically allocated device ID. We mark it as such so
                 * that we remember it must be freed, and we append a suffix
                 * to avoid namespace collision with explicit IDs.
                 */
                ret = ida_simple_get(&platform_devid_ida, 0, 0, GFP_KERNEL);
                if (ret < 0)
                        goto err_out;
                pdev->id = ret;
                pdev->id_auto = true;
                dev_set_name(&pdev->dev, "%s.%d.auto", pdev->name, pdev->id);
                break;

• • linux-4.4.1/platform_devid_ida(global)
  • linux-4.4.1/ida_simple_get()

        }

        for (i = 0; i < pdev->num_resources; i++) {
                struct resource *p, *r = &pdev->resource[i];

• • linux-4.4.1/resource

                if (r->name == NULL)
                        r->name = dev_name(&pdev->dev);

• • linux-4.4.1/dev_name()

                p = r->parent;
                if (!p) {
                        if (resource_type(r) == IORESOURCE_MEM)
                                p = &iomem_resource;
                        else if (resource_type(r) == IORESOURCE_IO)
                                p = &ioport_resource;

• • linux-4.4.1/resource_type()
  • linux-4.4.1/iomem_resource(global)
  • linux-4.4.1/ioport_resource(global)

                }

                if (p && insert_resource(p, r)) {
                        dev_err(&pdev->dev, "failed to claim resource %d\n", i);
                        ret = -EBUSY;
                        goto failed;
                }

• • linux-4.4.1/insert_resource()
  • linux-4.4.1/dev_err()

        }

        pr_debug("Registering platform device '%s'. Parent at %s\n",
                 dev_name(&pdev->dev), dev_name(pdev->dev.parent));

• • linux-4.4.1/pr_debug()

        ret = device_add(&pdev->dev);
        if (ret == 0)
                return ret;

• • linux-4.4.1/device_add()

 failed:
        if (pdev->id_auto) {
                ida_simple_remove(&platform_devid_ida, pdev->id);
                pdev->id = PLATFORM_DEVID_AUTO;
        }

• • linux-4.4.1/ida_simple_remove()

        while (--i >= 0) {
                struct resource *r = &pdev->resource[i];
                if (r->parent)
                        release_resource(r);
        }

• • linux-4.4.1/release_resource()

 err_out:
        return ret;
}
EXPORT_SYMBOL_GPL(platform_device_add);

• • linux-4.4.1/EXPORT_SYMBOL_GPL()

コメント†