lkml.org 
[lkml]   [2012]   [Sep]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[ 081/262] usb: gadget: dummy_hcd: add support for USB_DT_BOS on rh
    Date
    From: Greg KH <gregkh@linuxfoundation.org>

    3.5-stable review patch. If anyone has any objections, please let me know.

    ------------------

    From: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>

    commit 3b9c1c5ba7a95caae8440ea47308496b14f7301a upstream.

    Without a reply for USB_DT_BOS the USB3 mode does not work since
    448b6eb1 ("USB: Make sure to fetch the BOS desc for roothubs.).

    Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
    Signed-off-by: Felipe Balbi <balbi@ti.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/usb/gadget/dummy_hcd.c | 33 +++++++++++++++++++++++++++++++++
    1 file changed, 33 insertions(+)

    --- a/drivers/usb/gadget/dummy_hcd.c
    +++ b/drivers/usb/gadget/dummy_hcd.c
    @@ -1916,6 +1916,27 @@ done:
    return retval;
    }

    +/* usb 3.0 root hub device descriptor */
    +struct {
    + struct usb_bos_descriptor bos;
    + struct usb_ss_cap_descriptor ss_cap;
    +} __packed usb3_bos_desc = {
    +
    + .bos = {
    + .bLength = USB_DT_BOS_SIZE,
    + .bDescriptorType = USB_DT_BOS,
    + .wTotalLength = cpu_to_le16(sizeof(usb3_bos_desc)),
    + .bNumDeviceCaps = 1,
    + },
    + .ss_cap = {
    + .bLength = USB_DT_USB_SS_CAP_SIZE,
    + .bDescriptorType = USB_DT_DEVICE_CAPABILITY,
    + .bDevCapabilityType = USB_SS_CAP_TYPE,
    + .wSpeedSupported = cpu_to_le16(USB_5GBPS_OPERATION),
    + .bFunctionalitySupport = ilog2(USB_5GBPS_OPERATION),
    + },
    +};
    +
    static inline void
    ss_hub_descriptor(struct usb_hub_descriptor *desc)
    {
    @@ -2006,6 +2027,18 @@ static int dummy_hub_control(
    else
    hub_descriptor((struct usb_hub_descriptor *) buf);
    break;
    +
    + case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
    + if (hcd->speed != HCD_USB3)
    + goto error;
    +
    + if ((wValue >> 8) != USB_DT_BOS)
    + goto error;
    +
    + memcpy(buf, &usb3_bos_desc, sizeof(usb3_bos_desc));
    + retval = sizeof(usb3_bos_desc);
    + break;
    +
    case GetHubStatus:
    *(__le32 *) buf = cpu_to_le32(0);
    break;



    \
     
     \ /
      Last update: 2012-09-29 00:01    [W:2.119 / U:0.128 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site