On 07/24/2014 03:28 PM, Sebastian Hesselbarth wrote:
This adds support for xHCI USB 3.0 host controllers found on various
SoCs and PCI devices. Currently, the driver only supports the virtual
USB 2.0 ports of the host controller, so if you plan to use USB 3.0
devices, put a USB 2.0 cable in between.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@xxxxxxxxx>
---
[...]
diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
new file mode 100644
index 000000000000..64d39dd53e5a
--- /dev/null
+++ b/drivers/usb/host/xhci-hub.c
@@ -0,0 +1,699 @@
[...]
+static void xhci_setup_common_hub_descriptor(struct xhci_hcd *xhci,
+ struct usb_hub_descriptor *desc, int ports)
+{
+ u16 val;
+
+ /* xhci section 5.4.9 says 20ms max */
+ desc->bPwrOn2PwrGood = 10;
+ desc->bHubContrCurrent = 0;
+
+// desc->bNbrPorts = ports;
+ desc->bNbrPorts = xhci->num_usb3_ports + xhci->num_usb2_ports;
Dammit. The commented line is correct, the one below is a left-over
from USB 3.0 testing.
Either fix it up or request a v2 please.
Sebastian
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