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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2020-03-02 10:27:25 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2020-03-20 10:07:16 +0100 |
| commit | c4dcbcd30f046d6411cb0d789ad94056b935f26b (patch) | |
| tree | c05841b9a07d093aedf6bc79a60ac1c7ab9b7fcf /include/usb | |
| parent | 4569ddd9130ecb475b224ffbc6851e0b4c471028 (diff) | |
| download | barebox-c4dcbcd30f046d6411cb0d789ad94056b935f26b.tar.gz barebox-c4dcbcd30f046d6411cb0d789ad94056b935f26b.tar.xz | |
usb: support set hub depth request for USB 3.0 hubs
This is an adoption of U-Boot commit bbc6f06c0031249bf1983b875e54cb7549bafe60:
| commit bbc6f06c0031249bf1983b875e54cb7549bafe60
| Author: Bin Meng <bmeng.cn@gmail.com>
| Date: Wed Jul 19 21:51:13 2017 +0800
|
| usb: hub: Support 'set hub depth' request for USB 3.0 hubs
|
| USB 3.0 hub uses a hub depth value multiplied by four as an offset
| into the 'route string' to locate the bits it uses to determine the
| downstream port number. We shall set the hub depth value of a USB
| 3.0 hub after it is configured.
|
| Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
| Reviewed-by: Simon Glass <sjg@chromium.org>
In this patch we also support recording the depth of a hub in
struct usb_device.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'include/usb')
| -rw-r--r-- | include/usb/usb.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/usb/usb.h b/include/usb/usb.h index 94506fa525..5de9e25863 100644 --- a/include/usb/usb.h +++ b/include/usb/usb.h @@ -108,6 +108,7 @@ struct usb_device { int act_len; /* transfered bytes */ int maxchild; /* Number of ports if hub */ int portnr; + int level; struct usb_device *parent; struct usb_device *children[USB_MAXCHILDREN]; @@ -460,4 +461,6 @@ int usb_register_otg_device(struct device_d *parent, extern struct list_head usb_device_list; +bool usb_hub_is_root_hub(struct usb_device *hdev); + #endif /*_USB_H_ */ |