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    Subject[PATCH v2 08/12] USB: EHCI: register dependency parser for firmware nodes
    Date
    So others can find out whether a firmware node depends on a phy as
    specified in bindings/usb/nvidia,tegra20-ehci.txt.

    Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
    ---

    Changes in v2: None

    drivers/usb/host/ehci-tegra.c | 16 ++++++++++++++++
    1 file changed, 16 insertions(+)

    diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c
    index 4031b37..3665eaa 100644
    --- a/drivers/usb/host/ehci-tegra.c
    +++ b/drivers/usb/host/ehci-tegra.c
    @@ -589,6 +589,18 @@ static const struct ehci_driver_overrides tegra_overrides __initconst = {
    .reset = tegra_ehci_reset,
    };

    +static void tegra_ehci_get_dependencies(struct fwnode_handle *fwnode,
    + struct list_head *deps)
    +{
    + struct device_node *np;
    +
    + np = of_parse_phandle(to_of_node(fwnode), "nvidia,phy", 0);
    + if (!np)
    + return;
    +
    + fwnode_add_dependency(&np->fwnode, deps);
    +}
    +
    static int __init ehci_tegra_init(void)
    {
    if (usb_disabled())
    @@ -611,6 +623,8 @@ static int __init ehci_tegra_init(void)
    tegra_ehci_hc_driver.unmap_urb_for_dma = tegra_ehci_unmap_urb_for_dma;
    tegra_ehci_hc_driver.hub_control = tegra_ehci_hub_control;

    + fwnode_add_dependency_parser(tegra_ehci_get_dependencies);
    +
    return platform_driver_register(&tegra_ehci_driver);
    }
    module_init(ehci_tegra_init);
    @@ -618,6 +632,8 @@ module_init(ehci_tegra_init);
    static void __exit ehci_tegra_cleanup(void)
    {
    platform_driver_unregister(&tegra_ehci_driver);
    +
    + fwnode_remove_dependency_parser(tegra_ehci_get_dependencies);
    }
    module_exit(ehci_tegra_cleanup);

    --
    2.4.1


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