From patchwork Thu Feb 23 05:18:28 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Prashanth K X-Patchwork-Id: 13149863 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 C8C49C61DA4 for ; Thu, 23 Feb 2023 05:18:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233136AbjBWFSv (ORCPT ); Thu, 23 Feb 2023 00:18:51 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43124 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232817AbjBWFSt (ORCPT ); Thu, 23 Feb 2023 00:18:49 -0500 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BED8E3C78F; Wed, 22 Feb 2023 21:18:45 -0800 (PST) Received: from pps.filterd (m0279871.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 31N558kj022111; Thu, 23 Feb 2023 05:18:41 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : mime-version : content-type; s=qcppdkim1; bh=uDljakYelKyMseFDA7jnuI68ogj5XTtW+0h7qI7CYjQ=; b=NhxilBwCA3JnK8O9KnQ85mBIGwN/yiYnisSRX4XGmkXSGZpeb3UjXbyqaPdufsjhdeeX sKZD5631CrquCTOLz1nGvOikYWL1dMqFhqbhtrOdfX4B1Zk2rjhfEYyXP2UrB6PLkxVG jEcL5VfCsaC1VBOti48XY/9YttljKir/vw5Oa2QTqtSHHJKXZ/ocEFzskLw93E99hUdg iq0HYBy3cTlpEktK7HGMYcDPGi3KFbzRXXvhd+B+iWRzTddG1bebHXTqwArwAPhUIFHa ZfeIexcVTURgPU75Blf7atO1RUjyP2AG93m7P5/nx1vuXjqZ59guEQ7hicfnkaPy17mD Dg== Received: from nalasppmta05.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3nwymx89y3-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 23 Feb 2023 05:18:40 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA05.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 31N5Id5b028181 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 23 Feb 2023 05:18:39 GMT Received: from hu-prashk-hyd.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.41; Wed, 22 Feb 2023 21:18:36 -0800 From: Prashanth K To: Greg Kroah-Hartman , Thinh Nguyen , Jakob Koschel , =?utf-8?b?SsOzIMOBZ2lsYSBCaXRzY2g=?= , Alan Stern CC: Pratham Pratap , Jack Pham , , , Prashanth K Subject: [PATCH v1 0/2] Fix vbus draw of dwc3 gadget Date: Thu, 23 Feb 2023 10:48:28 +0530 Message-ID: <1677129510-10283-1-git-send-email-quic_prashk@quicinc.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: S8if6nz20MNktqCUKjUmLrq0LUHhSP2b X-Proofpoint-GUID: S8if6nz20MNktqCUKjUmLrq0LUHhSP2b X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.930,Hydra:6.0.562,FMLib:17.11.170.22 definitions=2023-02-23_01,2023-02-22_02,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 priorityscore=1501 spamscore=0 clxscore=1011 mlxlogscore=245 adultscore=0 suspectscore=0 phishscore=0 bulkscore=0 lowpriorityscore=0 mlxscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2302230045 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Currently dwc3 gadget processes the suspend interrupt event only if the device is in configured state. But consider a case where device is not configured and got suspend interrupt, in that case our gadget would still use 100mA as composite_suspend didn't happen. But battery charging specification (BC1.2) expects a downstream device to draw less than 2.5mA when unconnected OR suspended. And while resuming, the gadget can draw upto 100mA if its not configured, but the current implementation of composite_resume doesnt consider the case of unconfigured device. This series addresses the above mentioned issues. Prashanth K (2): usb: dwc3: gadget: Change condition for processing suspend event usb: gadget: composite: Draw 100mA current if not configured drivers/usb/dwc3/gadget.c | 11 ++--------- drivers/usb/gadget/composite.c | 2 ++ 2 files changed, 4 insertions(+), 9 deletions(-)