From patchwork Tue Nov 23 04:28:18 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Souradeep Chowdhury X-Patchwork-Id: 12633405 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 CD2B0C433EF for ; Tue, 23 Nov 2021 04:30:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233384AbhKWEdc (ORCPT ); Mon, 22 Nov 2021 23:33:32 -0500 Received: from so254-9.mailgun.net ([198.61.254.9]:35717 "EHLO so254-9.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233289AbhKWEd2 (ORCPT ); Mon, 22 Nov 2021 23:33:28 -0500 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1637641820; h=Message-Id: Date: Subject: Cc: To: From: Sender; bh=whmtLXvAQB0fIWyD4MRnrzokarPNCNaLn2AAiLNwSWc=; b=KLpZCTqCcCoQOIFf6qq8yNBpkLrSc795CfYfas+rm1Kv/EPouyLyDptcIeeqqBi8CHOiGXNe rQs/yjtwdEk5AHcAzXGq+6b7THhARvZPdzciz5Pm3z3UFliiYD8A4ZYjbaa5aaySD9aHi9v4 XuafNmGdIgeDMipW4LN0wdEKSyA= X-Mailgun-Sending-Ip: 198.61.254.9 X-Mailgun-Sid: WyI1MzIzYiIsICJsaW51eC1hcm0tbXNtQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n08.prod.us-east-1.postgun.com with SMTP id 619c6e5bdf12ba53c4f4b1c9 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Tue, 23 Nov 2021 04:30:19 GMT Sender: schowdhu=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 0458BC4361A; Tue, 23 Nov 2021 04:30:19 +0000 (UTC) Received: from blr-ubuntu-525.qualcomm.com (blr-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.18.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: schowdhu) by smtp.codeaurora.org (Postfix) with ESMTPSA id 22DCDC4360C; Tue, 23 Nov 2021 04:30:13 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 smtp.codeaurora.org 22DCDC4360C Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=fail smtp.mailfrom=codeaurora.org From: Souradeep Chowdhury To: linux-arm-msm@vger.kernel.org, linux-usb@vger.kernel.org, devicetree@vger.kernel.org, pure.logic@nexus-software.ie, bjorn.andersson@linaro.org, greg@kroah.com Cc: linux-kernel@vger.kernel.org, tsoni@codeaurora.org, psodagud@codeaurora.org, satyap@codeaurora.org, pheragu@codeaurora.org, rnayak@codeaurora.org, sibis@codeaurora.org, saiprakash.ranjan@codeaurora.org, quic_schowdhu@quicinc.com, Souradeep Chowdhury Subject: [PATCH V1 0/8] Add Embedded USB Debugger (EUD) driver Date: Tue, 23 Nov 2021 09:58:18 +0530 Message-Id: X-Mailer: git-send-email 2.7.4 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org This is a series of patches that implements a driver for the control peripheral, EUD (Embedded USB Debugger). The EUD is a mini-USB hub implemented on chip to support the USB-based debug and trace capabilities. Apart from debug capabilities, EUD has a control peripheral. Control Peripheral is on when EUD is on and gets signals like USB attach, pet EUD etc. EUD driver listens to events like USB attach or detach and then informs the USB about these events via ROLE-SWITCH. At regular intervals, the EUD driver receives an interrupt to pet the driver indicating that the software is functional. Changes in V1 * EUD has now been mapped as a separate DT node as it is an independent QCOM IP. * EUD is attached to the connector child of dwc3 via port end point since EUD driver needs the connector for role-switching, * EUD driver has been moved now to drivers/soc/qcom/qcom_eud.c. * All the comments from version 0 of the patch has been implemented. Souradeep Chowdhury (8): dt-bindings: Add the yaml bindings for EUD dt-bindings: connector: Add property for EUD type-C connector bindings: usb: dwc3: Update dwc3 properties for EUD connector usb: dwc3: drd: Register the eud connector child node for dwc3 soc: qcom: eud: Add driver support for Embedded USB Debugger(EUD) arm64: dts: qcom: sc7280: Add EUD dt node and dwc3 connector arm64: dts: qcom: sc7280: Set the default dr_mode for usb2 MAINTAINERS: Add maintainer entry for EUD Documentation/ABI/testing/sysfs-driver-eud | 9 + .../bindings/connector/usb-connector.yaml | 4 + .../devicetree/bindings/soc/qcom/qcom,eud.yaml | 52 ++++ .../devicetree/bindings/usb/snps,dwc3.yaml | 6 + MAINTAINERS | 8 + arch/arm64/boot/dts/qcom/sc7280-idp.dts | 4 + arch/arm64/boot/dts/qcom/sc7280.dtsi | 25 ++ drivers/soc/qcom/Kconfig | 10 + drivers/soc/qcom/Makefile | 1 + drivers/soc/qcom/qcom_eud.c | 268 +++++++++++++++++++++ drivers/usb/dwc3/drd.c | 26 ++ 11 files changed, 413 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-driver-eud create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,eud.yaml create mode 100644 drivers/soc/qcom/qcom_eud.c --- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation