1494a1f62b
this helper will be used for controllers which want to work at a lower speed even though they support higher USB transfer rates. One such case is Texas Instruments' AM437x SoC where it uses a USB3 controller without a USB3 PHY, rendering the controller USB2-only. Signed-off-by: Felipe Balbi <balbi@ti.com>
40 lines
906 B
C
40 lines
906 B
C
/*
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* OF helpers for usb devices.
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*
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* This file is released under the GPLv2
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*/
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#ifndef __LINUX_USB_OF_H
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#define __LINUX_USB_OF_H
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#include <linux/usb/ch9.h>
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#include <linux/usb/otg.h>
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#include <linux/usb/phy.h>
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#if IS_ENABLED(CONFIG_OF)
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enum usb_dr_mode of_usb_get_dr_mode(struct device_node *np);
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enum usb_device_speed of_usb_get_maximum_speed(struct device_node *np);
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#else
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static inline enum usb_dr_mode of_usb_get_dr_mode(struct device_node *np)
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{
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return USB_DR_MODE_UNKNOWN;
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}
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static inline enum usb_device_speed
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of_usb_get_maximum_speed(struct device_node *np)
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{
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return USB_SPEED_UNKNOWN;
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}
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#endif
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#if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_USB_PHY)
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enum usb_phy_interface of_usb_get_phy_mode(struct device_node *np);
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#else
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static inline enum usb_phy_interface of_usb_get_phy_mode(struct device_node *np)
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{
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return USBPHY_INTERFACE_MODE_UNKNOWN;
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}
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#endif
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#endif /* __LINUX_USB_OF_H */
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