From patchwork Thu Feb 23 12:42:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Prashanth K X-Patchwork-Id: 13150232 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 54454C61DA4 for ; Thu, 23 Feb 2023 12:42:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234067AbjBWMm2 (ORCPT ); Thu, 23 Feb 2023 07:42:28 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39178 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234073AbjBWMm0 (ORCPT ); Thu, 23 Feb 2023 07:42:26 -0500 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8876954A3E; Thu, 23 Feb 2023 04:42:22 -0800 (PST) Received: from pps.filterd (m0279867.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 31NCO52u019294; Thu, 23 Feb 2023 12:42:18 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 : mime-version : content-type; s=qcppdkim1; bh=MM0qQty+voAnaENBBVdRbuianxgy+a6YzP501pjWE/8=; b=Fsvtn6blOcOlLdJwdm0eECdRKGcn6pKPvTWxxQepjdEqqayFU9u8jQuL23M0aATavvPA DuWLmvJEkhux1H2ZR7mgDfWnL6zPILSffIKFG0gKpLA9Mu2EMlcKnBsDujP7hqy3D+L9 HEOOZGUkjy/3KlmrbIZd5x1sytF9L+cVKON7XCp2tGSggH1NPSfh8jGSckq1LtolwPQm ABJqueTtnlGkJoFMLGsqjw/erJ1qVU9VeQYeMUhXFChGWbIIqSU8o60WUdUUVXjWmgv5 3OFeKjMcYf0C6Pp9TcBWfRUQAaeYzgKlyAWYQ61wiAyf5X7BbXLFa/evXu2ZXuyvM/Bk vQ== Received: from nalasppmta02.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3nwy9gha7q-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 23 Feb 2023 12:42:18 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA02.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 31NCgHuT016399 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 23 Feb 2023 12:42:17 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; Thu, 23 Feb 2023 04:42:13 -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 v3 2/2] usb: gadget: composite: Draw 100mA current if not configured Date: Thu, 23 Feb 2023 18:12:01 +0530 Message-ID: <1677156121-30364-3-git-send-email-quic_prashk@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1677156121-30364-1-git-send-email-quic_prashk@quicinc.com> References: <1677156121-30364-1-git-send-email-quic_prashk@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) 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-GUID: arqHJS_I9qyKZNVlz-FYHgcn3QxI3bSO X-Proofpoint-ORIG-GUID: arqHJS_I9qyKZNVlz-FYHgcn3QxI3bSO 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_07,2023-02-23_01,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 mlxlogscore=646 spamscore=0 malwarescore=0 adultscore=0 impostorscore=0 mlxscore=0 suspectscore=0 lowpriorityscore=0 clxscore=1015 priorityscore=1501 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2302230103 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Currently we don't change the current value if device isn't in configured state. But the battery charging specification says, device can draw up to 100mA of current if its in unconfigured state. Hence add a Vbus_draw work in composite_resume to draw 100mA if the device isn't configured. Signed-off-by: Prashanth K --- drivers/usb/gadget/composite.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 403563c..386140f 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -2449,6 +2449,10 @@ void composite_resume(struct usb_gadget *gadget) usb_gadget_clear_selfpowered(gadget); usb_gadget_vbus_draw(gadget, maxpower); + } else { + maxpower = CONFIG_USB_GADGET_VBUS_DRAW; + maxpower = min(maxpower, 100U); + usb_gadget_vbus_draw(gadget, maxpower); } cdev->suspended = 0;