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usb: of: add functions to bind a companion controller

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EHCI controllers will have a companion controller. However, on platform
bus, there was difficult to bind them in previous code. So, this
patch adds helper functions to bind them using a "companion" property.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Yoshihiro Shimoda
2017-02-21 19:59:47 +09:00
committed by Greg Kroah-Hartman
parent cfd6ed4537
commit 5095cb89c6
3 changed files with 29 additions and 0 deletions
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5
include/linux/usb/of.h
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@@ -18,6 +18,7 @@ int of_usb_update_otg_caps(struct device_node *np,
struct usb_otg_caps *otg_caps);
struct device_node *usb_of_get_child_node(struct device_node *parent,
int portnum);
struct device *usb_of_get_companion_dev(struct device *dev);
#else
static inline enum usb_dr_mode
of_usb_get_dr_mode_by_phy(struct device_node *np, int arg0)
@@ -38,6 +39,10 @@ static inline struct device_node *usb_of_get_child_node
{
return NULL;
}
static inline struct device *usb_of_get_companion_dev(struct device *dev)
{
return NULL;
}
#endif
#if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_USB_SUPPORT)