[PATCH 07/17] usb: xhci-mtk: add a function to get bandwidth boundary

Chunfeng Yun
2021-03-05T09:04:05Z

This is used to simplify unit test.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
---
drivers/usb/host/xhci-mtk-sch.c | 27 ++++++++++++++++++++-------
1 file changed, 20 insertions(+), 7 deletions(-)

diff --git a/drivers/usb/host/xhci-mtk-sch.c b/drivers/usb/host/xhci-mtk-sch.c
index bef82c1f909d..cb597357f134 100644
--- a/drivers/usb/host/xhci-mtk-sch.c
+++ b/drivers/usb/host/xhci-mtk-sch.c
@@ -37,6 +37,25 @@ static int is_fs_or_ls(enum usb_device_speed speed)
return speed == USB_SPEED_FULL || speed == USB_SPEED_LOW;
}

+static u32 get_bw_boundary(enum usb_device_speed speed)
+{
+ u32 boundary;
+
+ switch (speed) {
+ case USB_SPEED_SUPER_PLUS:
+ boundary = SSP_BW_BOUNDARY;
+ break;
+ case USB_SPEED_SUPER:
+ boundary = SS_BW_BOUNDARY;
+ break;
+ default:
+ boundary = HS_BW_BOUNDARY;
+ break;
+ }
+
+ return boundary;
+}
+
/*
* get the index of bandwidth domains array which @ep belongs to.
*
@@ -579,13 +598,7 @@ static int check_sch_bw(struct usb_device *udev,
break;
}

- if (udev->speed == USB_SPEED_SUPER_PLUS)
- bw_boundary = SSP_BW_BOUNDARY;
- else if (udev->speed == USB_SPEED_SUPER)
- bw_boundary = SS_BW_BOUNDARY;
- else
- bw_boundary = HS_BW_BOUNDARY;
-
+ bw_boundary = get_bw_boundary(udev->speed);
/* check bandwidth */
if (min_bw > bw_boundary)
return -ERANGE;
--
2.18.0