diff options
| author | Chunfeng Yun <chunfeng.yun@mediatek.com> | 2021-03-08 10:52:05 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-03-10 09:37:17 +0100 |
| commit | fb95c7cf5600b7b74412f27dfb39a1e13fd8a90d (patch) | |
| tree | a26adef0d2e1159293afa37941a1970bd206d2a5 /include/linux/usb/ch9.h | |
| parent | 14295a150050acfc3a1260ee3d2114b0b824199f (diff) | |
usb: common: add function to get interval expressed in us unit
Add a new function to convert bInterval into the time expressed
in 1us unit.
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/25c8a09b055f716c1e5bf11fea72c3418f844482.1615170625.git.chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/usb/ch9.h')
| -rw-r--r-- | include/linux/usb/ch9.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h index abdd310c77f0..74debc824645 100644 --- a/include/linux/usb/ch9.h +++ b/include/linux/usb/ch9.h @@ -90,6 +90,9 @@ extern enum usb_ssp_rate usb_get_maximum_ssp_rate(struct device *dev); */ extern const char *usb_state_string(enum usb_device_state state); +unsigned int usb_decode_interval(const struct usb_endpoint_descriptor *epd, + enum usb_device_speed speed); + #ifdef CONFIG_TRACING /** * usb_decode_ctrl - Returns human readable representation of control request. |