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authorFelipe Balbi <balbi@ti.com>2013-06-30 13:56:45 +0300
committerFelipe Balbi <balbi@ti.com>2013-07-29 13:56:46 +0300
commit1494a1f62bf7cf57345e9282c8189fe2a21fab64 (patch)
tree16b5e45329a149af37278811b760422ae5e0d46d /include/linux/usb
parent410aee70f06da60dd8f78c3ec3346cc74c9bed46 (diff)
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')
-rw-r--r--include/linux/usb/of.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/usb/of.h b/include/linux/usb/of.h
index a0ef405368b..5a7cb9ebf0e 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)