linux-stable/include/linux/usb/of.h
Hans de Goede ce15ed4c5d USB: Fix of_usb_get_dr_mode_by_phy with a shared phy block
Some SoCs have a single phy-hw-block with multiple phys, this is
modelled by a single phy dts node, so we end up with multiple
controller nodes with a phys property pointing to the phy-node
of the otg-phy.

Only one of these controllers typically is an otg controller, yet we
were checking the first controller who uses a phy from the block and
then end up looking for a dr_mode property in e.g. the ehci controller.

This commit fixes this by adding an arg0 parameter to
of_usb_get_dr_mode_by_phy and make of_usb_get_dr_mode_by_phy
check that this matches the phandle args[0] value when looking for
the otg controller.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-06-21 10:52:39 +03:00

53 lines
1.3 KiB
C

/*
* OF helpers for usb devices.
*
* This file is released under the GPLv2
*/
#ifndef __LINUX_USB_OF_H
#define __LINUX_USB_OF_H
#include <linux/usb/ch9.h>
#include <linux/usb/otg.h>
#include <linux/usb/phy.h>
#if IS_ENABLED(CONFIG_OF)
enum usb_dr_mode of_usb_get_dr_mode_by_phy(struct device_node *np, int arg0);
bool of_usb_host_tpl_support(struct device_node *np);
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);
#else
static inline enum usb_dr_mode
of_usb_get_dr_mode_by_phy(struct device_node *np, int arg0)
{
return USB_DR_MODE_UNKNOWN;
}
static inline bool of_usb_host_tpl_support(struct device_node *np)
{
return false;
}
static inline int of_usb_update_otg_caps(struct device_node *np,
struct usb_otg_caps *otg_caps)
{
return 0;
}
static inline struct device_node *usb_of_get_child_node
(struct device_node *parent, int portnum)
{
return NULL;
}
#endif
#if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_USB_SUPPORT)
enum usb_phy_interface of_usb_get_phy_mode(struct device_node *np);
#else
static inline enum usb_phy_interface of_usb_get_phy_mode(struct device_node *np)
{
return USBPHY_INTERFACE_MODE_UNKNOWN;
}
#endif
#endif /* __LINUX_USB_OF_H */