From patchwork Fri Apr 16 12:46:58 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Artur Petrosyan X-Patchwork-Id: 423086 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C95F8C433ED for ; Fri, 16 Apr 2021 12:47:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A1927611BF for ; Fri, 16 Apr 2021 12:47:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243595AbhDPMr1 (ORCPT ); Fri, 16 Apr 2021 08:47:27 -0400 Received: from smtprelay-out1.synopsys.com ([149.117.87.133]:42226 "EHLO smtprelay-out1.synopsys.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243069AbhDPMr1 (ORCPT ); Fri, 16 Apr 2021 08:47:27 -0400 Received: from mailhost.synopsys.com (mdc-mailhost1.synopsys.com [10.225.0.209]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by smtprelay-out1.synopsys.com (Postfix) with ESMTPS id 85CD0C06B9; Fri, 16 Apr 2021 12:47:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=synopsys.com; s=mail; t=1618577222; bh=EB3d1O8ZkzAhpUgq8QJFbFXUneDMHT1L8PBMvL6acPw=; h=Date:In-Reply-To:References:From:Subject:To:Cc:From; b=BTKwQJ01811YGPnYL7QPJGuoLneHbq2jCfFXUl3pnyiWR6+Ik+VmFApXc6gLOzkxG vPmXlDcnue2xUUsPOIQqPVZSh8BZo3rrrXhHJ1BGAUxvjINi8uDch5ReOXWP8HPgpx IXW60CsAOHFoN7J0CykiS7pl1Yeybyzf44bUov/AkJzBRILoBK4oZ2IsJEmutGFCeK WWAWmiMHiOi1EZc56R+UEA5tIYgDQhPAThLV8EpPjwCJNsuHiq+J7HZOEH5p3FPqfL vitCp6G1q5vsW6rGPdHFApiy0HAfUp1LXeZgXf4YKdU5+CZgLM4lRONwsKOu5A5Xwk zHDV2bCML4keA== Received: from razpc-HP (razpc-hp.internal.synopsys.com [10.116.126.207]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by mailhost.synopsys.com (Postfix) with ESMTPSA id 652CFA005C; Fri, 16 Apr 2021 12:46:59 +0000 (UTC) Received: by razpc-HP (sSMTP sendmail emulation); Fri, 16 Apr 2021 16:46:58 +0400 Date: Fri, 16 Apr 2021 16:46:58 +0400 In-Reply-To: References: X-SNPS-Relay: synopsys.com From: Artur Petrosyan Subject: [PATCH v2 02/15] usb: dwc2: Reset DEVADDR after exiting gadget hibernation. To: Felipe Balbi , Greg Kroah-Hartman , Minas Harutyunyan , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Cc: John Youn , Artur Petrosyan , Minas Harutyunyan Message-Id: <20210416124659.652CFA005C@mailhost.synopsys.com> Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Initially resetting device address was done in dwc2_hsotg_irq() interrupt handler. However, when core is hibernated USB RESET is not handled in dwc2_hsotg_irq() handler, instead USB RESET interrupt is handled in dwc2_handle_gpwrdn_intr() handler. - Added reset device address to zero when core exits from gadget hibernation. Signed-off-by: Artur Petrosyan Signed-off-by: Minas Harutyunyan Acked-by: Minas Harutyunyan --- drivers/usb/dwc2/gadget.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 2f50f3e62caa..e6bb1bdb2760 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -5305,6 +5305,10 @@ int dwc2_gadget_exit_hibernation(struct dwc2_hsotg *hsotg, dwc2_writel(hsotg, dr->dcfg, DCFG); dwc2_writel(hsotg, dr->dctl, DCTL); + /* On USB Reset, reset device address to zero */ + if (reset) + dwc2_clear_bit(hsotg, DCFG, DCFG_DEVADDR_MASK); + /* De-assert Wakeup Logic */ gpwrdn = dwc2_readl(hsotg, GPWRDN); gpwrdn &= ~GPWRDN_PMUACTV;