From patchwork Wed May 25 18:20:21 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krishna Kurapati X-Patchwork-Id: 12861487 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 A520DC433EF for ; Wed, 25 May 2022 18:20:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233452AbiEYSUk (ORCPT ); Wed, 25 May 2022 14:20:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34756 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231321AbiEYSUk (ORCPT ); Wed, 25 May 2022 14:20:40 -0400 Received: from alexa-out-sd-02.qualcomm.com (alexa-out-sd-02.qualcomm.com [199.106.114.39]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D51C8ABF67; Wed, 25 May 2022 11:20:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1653502838; x=1685038838; h=from:to:cc:subject:date:message-id:mime-version; bh=Rj+yk/1ZZ+5Db/WRKPe+sKAQ9C2XIp9i7ydkUsZJQF0=; b=pW+pDaT2ug62GO1hd7zL4Qy6L4jIuvHWDB//+PbxOm9EMU+dl+apz9Zr 33g2F7ZDc8XiBf/r2xDFUwEp7nKVKhFMyKU4KY9r36lpmsFLijKJNXs0y zWX6Nbl0Nq589yaGsfmTdd8pzkLKQWodkDJLWTgwwlTXqI8QHQlNuaAud A=; Received: from unknown (HELO ironmsg04-sd.qualcomm.com) ([10.53.140.144]) by alexa-out-sd-02.qualcomm.com with ESMTP; 25 May 2022 11:20:38 -0700 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg04-sd.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 May 2022 11:20:38 -0700 Received: from nalasex01a.na.qualcomm.com (10.47.209.196) by nasanex01c.na.qualcomm.com (10.47.97.222) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Wed, 25 May 2022 11:20:37 -0700 Received: from hu-kriskura-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 15.2.986.22; Wed, 25 May 2022 11:20:31 -0700 From: Krishna Kurapati To: Krzysztof Kozlowski , Rob Herring , Andy Gross , Bjorn Andersson , Greg Kroah-Hartman , Felipe Balbi , Stephen Boyd , Doug Anderson , "Matthias Kaehlcke" , Mathias Nyman CC: , , , , , , , , Krishna Kurapati Subject: [PATCH v18 0/5] USB DWC3 host wake up support from system suspend Date: Wed, 25 May 2022 23:50:21 +0530 Message-ID: <1653502826-24256-1-git-send-email-quic_kriskura@quicinc.com> X-Mailer: git-send-email 2.7.4 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) Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Avoiding phy powerdown in host mode when dwc3 is wakeup capable, so that it can be wake up by devices. Keep usb30_prim gdsc active to retain controller status during suspend/resume. Changes in v18: Fixed minor nit picks in v17 reported by Matthias. Changes in v17: Moved the speed check to glue driver. Powering down phy's solely based on dwc3 wakeup capability. Configuring the interrupt functions appropriately. Changes in v16: Added changes to power down the phy's during suspend only if dwc3 is not wakeup capable. Changes in v15: Added patch to enable wakeup for xhci-plat based on children wakeup status. Used device_wakeup_path instead of device_children_wakeup_capable Changes in v14: Added patch for device_children_wakeup_capable. Used device_children_wakeup_capable instead of usb_wakeup_enabled_descendants. Fixed minor nit picks in v13 reported by Matthias. Changes in v13: Moved the dt bindings patch to start. Changed dwc3_set_phy_speed_mode to dwc3_check_phy_speed_mode. Check wakep-source property for dwc3 core node to set the wakeup capability. Drop the device_init_wakeup call from runtime suspend and resume. Added GENPD_FLAG_RPM_ALWAYS_ON and set GENPD_FLAG_ALWAYS_ON if wakeup is supported. Changes in v12: Squashed PATCH 1/5 and 2/5 of v11. Added dt bindings and device tree entry for wakeup-source property for dwc3 core node. Dropped redundant phy_set_mode call. Changes in v11: Moving back to v8 version https://patchwork.kernel.org/project/linux-arm-msm/cover/1624882097-23265-1-git-send-email-sanm@codeaurora.org as we are getting interrupts during suspend when enabling both DP hs phy irq and DM hs phy irq. Moved the set phy mode function to dwc3/core.c from xhci-plat.c We didn't find any other option other than accessing xhci from dwc. Changes in v10: PATCH 1/6: Change device_set_wakeup_capable to device_set_wakeup_enable PATCH 2/6: Remove redundant else part in dwc3_resume_common PATCH 4/6: Change the irg flags PATCH 5/6: Set flag GENPD_FLAG_ALWAYS_ON PATCH 6/6: Remove disable interrupts function and enable interrupts in probe. Changes in v9: Checking with device_may_makeup property instead of phy_power_off flag. Changed the IRQ flags and removed hs_phy_mode variable. Changes in v8: Moved the dwc3 suspend quirk code in dwc3/host.c to xhci-plat.c Checking phy_power_off flag instead of usb_wakeup_enabled_descendants to keep gdsc active. Changes in v7: Change in commit text and message in PATCH 1/5 and PATCH 5/5 as per Matthias suggestion. Added curly braces for if and else if sections in PATCH 4/5. Changes in v6: Addressed comments in host.c and core.c Separated the patches in dwc3-qcom.c to make it simple. Dropped wakeup-source change as it is not related to this series. Changes in v5: Added phy_power_off flag to check presence of wakeup capable devices. Dropped patch[v4,4/5] as it is present linux-next. Addressed comments in host.c and dwc3-qcom.c. Changes in v4: Addressed Matthias comments raised in v3. Changes in v3: Removed need_phy_for_wakeup flag and by default avoiding phy powerdown. Addressed Matthias comments and added entry for DEV_SUPERSPEED. Added suspend_quirk in dwc3 host and moved the dwc3_set_phy_speed_flags. Added wakeup-source dt entry and reading in dwc-qcom.c glue driver. Changes in v2: Dropped the patch in clock to set GENPD_FLAG_ACTIVE_WAKEUP flag and setting in usb dwc3 driver. Separated the core patch and glue driver patch. Made need_phy_for_wakeup flag part of dwc structure and hs_phy_flags as unsgined int. Adrressed the comment on device_init_wakeup call. Corrected offset for reading portsc register. Added pacth to support wakeup in xo shutdown case. Sandeep Maheswaram (5): dt-bindings: usb: dwc3: Add wakeup-source property support usb: dwc3: core: Host wake up support from system suspend usb: dwc3: qcom: Add helper functions to enable,disable wake irqs usb: dwc3: qcom: Configure wakeup interrupts during suspend usb: dwc3: qcom: Keep power domain on to retain controller status .../devicetree/bindings/usb/snps,dwc3.yaml | 5 + drivers/usb/dwc3/core.c | 26 ++-- drivers/usb/dwc3/dwc3-qcom.c | 140 +++++++++++++++------ 3 files changed, 117 insertions(+), 54 deletions(-)