diff options
| author |   Felipe Balbi <balbi@ti.com> | 2013-06-30 13:56:45 +0300 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2013-07-29 13:56:46 +0300 |
| commit | 1494a1f62bf7cf57345e9282c8189fe2a21fab64 (patch) | |
| tree | 16b5e45329a149af37278811b760422ae5e0d46d /include/linux/usb/of.h | |
| parent | usb: phy: protect against NULL phy pointers (diff) | |
| download | linux-dev-1494a1f62bf7cf57345e9282c8189fe2a21fab64.tar.xz linux-dev-1494a1f62bf7cf57345e9282c8189fe2a21fab64.zip | |
usb: common: introduce of_usb_get_maximum_speed()
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>
Diffstat (limited to 'include/linux/usb/of.h')
| -rw-r--r-- | include/linux/usb/of.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/usb/of.h b/include/linux/usb/of.h index a0ef405368b8..5a7cb9ebf0ef 100644 --- a/include/linux/usb/of.h +++ b/include/linux/usb/of.h @@ -7,16 +7,24 @@ #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(struct device_node *np); +enum usb_device_speed of_usb_get_maximum_speed(struct device_node *np); #else static inline enum usb_dr_mode of_usb_get_dr_mode(struct device_node *np) { return USB_DR_MODE_UNKNOWN; } + +static inline enum usb_device_speed +of_usb_get_maximum_speed(struct device_node *np) +{ + return USB_SPEED_UNKNOWN; +} #endif #if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_USB_PHY) |