From patchwork Thu Mar 16 23:38:07 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Elson Roy Serrao X-Patchwork-Id: 13178397 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 68A29C6FD1F for ; Thu, 16 Mar 2023 23:39:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229838AbjCPXjC (ORCPT ); Thu, 16 Mar 2023 19:39:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32904 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230123AbjCPXip (ORCPT ); Thu, 16 Mar 2023 19:38:45 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 384E9B6D30; Thu, 16 Mar 2023 16:38:32 -0700 (PDT) Received: from pps.filterd (m0279873.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 32GMSG1p013873; Thu, 16 Mar 2023 23:38:14 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : in-reply-to : references; s=qcppdkim1; bh=jgq6H8II6Z0ilzNUlyVFzHKRunZzG3RZ4KR7S/XvShg=; b=hYTIdHD/unFMtQZizXII0S+UOCSfbCt50mC3tiJrwE+VMmXL8V6dq9kbvjJKYwEWEZ+v hzYsvNWdpTQ/ppLkaniI8q3lzyb0ehXwtHwQ0kUf2tZWj159SAgap087bVRMQEkjjPGh EJjv2n8IAtVHzSaAEBDFgjhSqyoZCQE8Nn+AjxAKejE7a6Pkm1cgYFc+M0Ui+/3km320 OlTosKof80nBThHMjGpsivOnmYMQmedEkMyN9ViXGKiY6UXeUEJClmgghBXw31iT5gkJ 7Lnno7+/iQ9Va+VimpSIR+oOcpQWd2NMnyY/iL0pZoaDXV02lUFgFooIB3F1QVe2Zr2W 9g== Received: from nalasppmta01.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3pc4vv9b5p-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 16 Mar 2023 23:38:14 +0000 Received: from pps.filterd (NALASPPMTA01.qualcomm.com [127.0.0.1]) by NALASPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTP id 32GNcDmM007517; Thu, 16 Mar 2023 23:38:13 GMT Received: from pps.reinject (localhost [127.0.0.1]) by NALASPPMTA01.qualcomm.com (PPS) with ESMTP id 3pbpy2782q-1; Thu, 16 Mar 2023 23:38:13 +0000 Received: from NALASPPMTA01.qualcomm.com (NALASPPMTA01.qualcomm.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 32GNcDNV007509; Thu, 16 Mar 2023 23:38:13 GMT Received: from hu-devc-lv-c.qualcomm.com (hu-eserrao-lv.qualcomm.com [10.47.235.164]) by NALASPPMTA01.qualcomm.com (PPS) with ESMTP id 32GNcD3S007507; Thu, 16 Mar 2023 23:38:13 +0000 Received: by hu-devc-lv-c.qualcomm.com (Postfix, from userid 464172) id AB32420E5A; Thu, 16 Mar 2023 16:38:12 -0700 (PDT) From: Elson Roy Serrao To: gregkh@linuxfoundation.org, Thinh.Nguyen@synopsys.com Cc: linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, quic_wcheng@quicinc.com, quic_jackp@quicinc.com, Elson Roy Serrao Subject: [PATCH v12 5/6] usb: gadget: arm the function for triggering remote wakeup Date: Thu, 16 Mar 2023 16:38:07 -0700 Message-Id: <1679009888-8239-6-git-send-email-quic_eserrao@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1679009888-8239-1-git-send-email-quic_eserrao@quicinc.com> References: <1679009888-8239-1-git-send-email-quic_eserrao@quicinc.com> X-QCInternal: smtphost X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: _NTDcmGVGvDMdIKHFoER9NgbLWdXO7z4 X-Proofpoint-GUID: _NTDcmGVGvDMdIKHFoER9NgbLWdXO7z4 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.942,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-03-16_14,2023-03-16_02,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 phishscore=0 mlxlogscore=417 mlxscore=0 spamscore=0 clxscore=1015 impostorscore=0 bulkscore=0 malwarescore=0 suspectscore=0 priorityscore=1501 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2303150002 definitions=main-2303160176 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org When host sends function suspend feature selector to the device, arm the function for remote wakeup based on the received packet. Also host queries the function wakeup capability through a get status request. Handle such requests in composite layer for cases where function driver has not exposed a get_status callback. Signed-off-by: Elson Roy Serrao --- drivers/usb/gadget/composite.c | 26 +++++++++++++++++++++++--- 1 file changed, 23 insertions(+), 3 deletions(-) diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 2111732..2c1100e 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -2006,9 +2006,20 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) f = cdev->config->interface[intf]; if (!f) break; - status = f->get_status ? f->get_status(f) : 0; - if (status < 0) - break; + + if (f->get_status) { + status = f->get_status(f); + if (status < 0) + break; + } else { + /* Set D0 and D1 bits based on func wakeup capability */ + if (f->config->bmAttributes & USB_CONFIG_ATT_WAKEUP) { + status |= USB_INTRF_STAT_FUNC_RW_CAP; + if (f->func_wakeup_armed) + status |= USB_INTRF_STAT_FUNC_RW; + } + } + put_unaligned_le16(status & 0x0000ffff, req->buf); break; /* @@ -2029,6 +2040,15 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) f = cdev->config->interface[intf]; if (!f) break; + + if (w_index & USB_INTRF_FUNC_SUSPEND_RW) { + if (!(f->config->bmAttributes & + USB_CONFIG_ATT_WAKEUP)) + break; + f->func_wakeup_armed = (ctrl->bRequest == + USB_REQ_SET_FEATURE); + } + value = 0; if (f->func_suspend) value = f->func_suspend(f, w_index >> 8);