lkml.org 
[lkml]   [2007]   [Aug]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [linux-usb-devel] [RFC] USB: driver for iphone charging
    On Fri, 24 Aug 2007, Oliver Neukum wrote:

    > This schedules the change via a workqueue, so you'll be reprobed. If you
    > fire of the first vendor command you are doing so before the configuration
    > is changed. How is this supposed to work?

    I would do it like this:

    static int iphone_probe(struct usb_interface *intf,
    const struct usb_device_id *id)
    {
    struct usb_device *udev = interface_to_usbdev(intf);
    int rc;

    if (udev->actconfig->desc.bConfigurationValue != 3) {
    dbg(&udev->dev, "Calling set_configuration\n");
    rc = usb_driver_set_configuration(udev, 3);
    } else {
    dbg(&udev->dev, "Configuration set, sending magic comand\n");
    rc = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
    0x40, (USB_DIR_OUT | USB_TYPE_VENDOR |
    USB_RECIP_DEVICE),
    0x6400, 0, NULL, 0, 1000);
    }
    if (rc)
    dev_err(&udev->dev, "Command failed: %d\n", rc);

    /* we don't really want to bind to the device, userspace programs can
    * handle the syncing just fine, so get outta here. */
    return -ENODEV;
    }

    Alan Stern

    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2007-08-24 16:11    [W:3.346 / U:0.032 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site