Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760421AbaGYNgY (ORCPT ); Fri, 25 Jul 2014 09:36:24 -0400 Received: from mailout2.samsung.com ([203.254.224.25]:57795 "EHLO mailout2.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760365AbaGYNgV (ORCPT ); Fri, 25 Jul 2014 09:36:21 -0400 X-AuditID: cbfee61a-f79e46d00000134f-2c-53d25d537494 From: Robert Baldyga To: balbi@ti.com Cc: gregkh@linuxfoundation.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, mina86@mina86.com, m.szyprowski@samsung.com, andrzej.p@samsung.com, Robert Baldyga Subject: [PATCH v2 2/3] usb: gadget: f_fs: add ioctl returning ep descriptor Date: Fri, 25 Jul 2014 15:36:02 +0200 Message-id: <1406295363-26998-3-git-send-email-r.baldyga@samsung.com> X-Mailer: git-send-email 1.9.1 In-reply-to: <1406295363-26998-1-git-send-email-r.baldyga@samsung.com> References: <1406295363-26998-1-git-send-email-r.baldyga@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprOLMWRmVeSWpSXmKPExsVy+t9jQd3g2EvBBpdbhSxmvWxnsTh4v96i efF6NovLu+awWSxa1spssfbIXXaLBcdbWC0eHN7J7sDhsX/uGnaPdX9eMXn0bVnF6HH8xnYm j8+b5AJYo7hsUlJzMstSi/TtErgylt3/z1JwlrfiyNe/rA2MjdxdjJwcEgImEvvX7WeBsMUk Ltxbz9bFyMUhJDCdUWLes6nsEE47k8SLha1gVWwCOhJbvk9gBLFFBAQk1r+4BFbELHCcUWLm py9MXYwcHMICPhJTGsVAalgEVCVWrvrNCmLzCrhKTFs+jRFim5zEyWOTweKcAm4SDet2g7UK AdV0nbabwMi7gJFhFaNoakFyQXFSeq6hXnFibnFpXrpecn7uJkZwcD2T2sG4ssHiEKMAB6MS D29H/cVgIdbEsuLK3EOMEhzMSiK8tVGXgoV4UxIrq1KL8uOLSnNSiw8xSnOwKInzHmi1DhQS SE8sSc1OTS1ILYLJMnFwSjUwzpTvOONb/Gi+t81drucmKs51rpeS47XdNDZ/9JmfzaC419He Z0q51IuiqhXlBZ/eZe/4xp3/PuZj5KQFHO9fca9eEcYR8Z6jc7FbUcOd5J4VfGs+flJhzLFI /xl08UjpvK3OD63NT59Z0i+lomz5e9anmonMGnvzWQys6rd6Lrdmj+vIVfBUYinOSDTUYi4q TgQA9AQMQCoCAAA= Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch introduces ioctl named FUNCTIONFS_ENDPOINT_DESC, which returns endpoint descriptor to userspace. It works only if function is active. Signed-off-by: Robert Baldyga --- drivers/usb/gadget/f_fs.c | 17 +++++++++++++++++ include/uapi/linux/usb/functionfs.h | 6 ++++++ 2 files changed, 23 insertions(+) diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c index 490b30f..a2e18cc 100644 --- a/drivers/usb/gadget/f_fs.c +++ b/drivers/usb/gadget/f_fs.c @@ -1031,6 +1031,23 @@ static long ffs_epfile_ioctl(struct file *file, unsigned code, case FUNCTIONFS_ENDPOINT_REVMAP: ret = epfile->ep->num; break; + case FUNCTIONFS_ENDPOINT_DESC: + { + int desc_idx; + struct usb_endpoint_descriptor *desc; + + if (epfile->ffs->gadget->speed == USB_SPEED_SUPER) + desc_idx = 2; + else if (epfile->ffs->gadget->speed == USB_SPEED_HIGH) + desc_idx = 1; + else + desc_idx = 0; + desc = epfile->ep->descs[desc_idx]; + ret = copy_to_user((void *)value, desc, sizeof(*desc)); + if (ret) + ret = -EFAULT; + break; + } default: ret = -ENOTTY; } diff --git a/include/uapi/linux/usb/functionfs.h b/include/uapi/linux/usb/functionfs.h index 1dc473a..1ab6f06 100644 --- a/include/uapi/linux/usb/functionfs.h +++ b/include/uapi/linux/usb/functionfs.h @@ -197,6 +197,12 @@ struct usb_functionfs_event { */ #define FUNCTIONFS_ENDPOINT_REVMAP _IO('g', 129) +/* + * Returns endpoint descriptor. In funciton is not active returns -ENODEV. + */ +#define FUNCTIONFS_ENDPOINT_DESC _IOR('g', 130, \ + struct usb_endpoint_descriptor) + #endif /* _UAPI__LINUX_FUNCTIONFS_H__ */ -- 1.9.1 -- 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/