From patchwork Thu Dec 2 09:51:20 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Souradeep Chowdhury X-Patchwork-Id: 12652093 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 5463BC433FE for ; Thu, 2 Dec 2021 09:52:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1356646AbhLBJ4H (ORCPT ); Thu, 2 Dec 2021 04:56:07 -0500 Received: from alexa-out.qualcomm.com ([129.46.98.28]:22645 "EHLO alexa-out.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1356679AbhLBJ4B (ORCPT ); Thu, 2 Dec 2021 04:56:01 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1638438760; x=1669974760; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=9eo2qGNnGL41LARnRx/YPixlQKe6J2GkR3doXgm+13I=; b=cwjr80+XMUrAFoz08qnbUgru+scSWV3p3TFIoDf7fZh2s7kGap+6L4AC 274JtABJZ0140pR14paeEj3O6t1ehTm9KgfeBk/iuWHd4cTXQXnWq6xoQ 50nRsejCLHSCKEdTkByQ7MoiQrpt1lifOBEutibjA/Nn3wfDRAh5xwQ+I 0=; Received: from ironmsg08-lv.qualcomm.com ([10.47.202.152]) by alexa-out.qualcomm.com with ESMTP; 02 Dec 2021 01:52:38 -0800 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg08-lv.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Dec 2021 01:52:38 -0800 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 15.2.922.19; Thu, 2 Dec 2021 01:52:37 -0800 Received: from blr-ubuntu-525.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 15.2.922.19; Thu, 2 Dec 2021 01:52:32 -0800 From: Souradeep Chowdhury To: , , , , , , CC: , , , , , , , , Souradeep Chowdhury Subject: [PATCH V2 1/8] dt-bindings: Add the yaml bindings for EUD Date: Thu, 2 Dec 2021 15:21:20 +0530 Message-ID: <401e300b18a86ca8fcfa77db0e7ba48d0ed88f15.1638430506.git.quic_schowdhu@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: References: 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) Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Documentation for Embedded USB Debugger(EUD) device tree bindings in yaml format. Signed-off-by: Souradeep Chowdhury --- .../devicetree/bindings/soc/qcom/qcom,eud.yaml | 50 ++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,eud.yaml diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,eud.yaml b/Documentation/devicetree/bindings/soc/qcom/qcom,eud.yaml new file mode 100644 index 0000000..0c49d08 --- /dev/null +++ b/Documentation/devicetree/bindings/soc/qcom/qcom,eud.yaml @@ -0,0 +1,50 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: "http://devicetree.org/schemas/soc/qcom/qcom,eud.yaml#" +$schema: "http://devicetree.org/meta-schemas/core.yaml#" + +title: Qualcomm Embedded USB Debugger + +maintainers: + - Souradeep Chowdhury + +description: + This binding is used to describe the Qualcomm Embedded USB Debugger, which is + mini USB-hub implemented on chip to support USB-based debug capabilities. + +properties: + compatible: + items: + - enum: + - qcom,sc7280-eud + - const: qcom,eud + + reg: + items: + - description: EUD Base Register Region + - description: EUD Mode Manager Register + + interrupts: + description: + EUD interrupt + + port: + description: + This port is to be attached to the endpoint of the connector child of + DWC3 controller node. The controller has the "usb-role-switch" property. + $ref: /schemas/graph.yaml#/properties/port + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + eud@88e0000 { + compatible = "qcom,sc7280-eud","qcom,eud"; + reg = <0x88e0000 0x2000>, + <0x88e2000 0x1000>; + }; From patchwork Thu Dec 2 09:51:21 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Souradeep Chowdhury X-Patchwork-Id: 12652097 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 A3BE0C433EF for ; Thu, 2 Dec 2021 09:52:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1356680AbhLBJ4N (ORCPT ); Thu, 2 Dec 2021 04:56:13 -0500 Received: from alexa-out-sd-02.qualcomm.com ([199.106.114.39]:26862 "EHLO alexa-out-sd-02.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1356688AbhLBJ4G (ORCPT ); Thu, 2 Dec 2021 04:56:06 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1638438764; x=1669974764; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=q3xAJdHPHppWIWjCvJHk/ddabCDPeYJESL/Fb7Eov80=; b=ShBUON31O9ePglaIQsu9Q8iQua1jQ1FN3xTZAWvrGBnEuX3TSGJQ879C pYaUlTB04Dxe/0+vYBZ9GnEYE/kJ0Zzu+XoosE8LXZ+7ElgiargVyOxk4 keLKaZXSLB5xRuXmPoYBWsvR553YUEFVGqsN1CFa2mrn0kvzLHM+AwZrq E=; Received: from unknown (HELO ironmsg04-sd.qualcomm.com) ([10.53.140.144]) by alexa-out-sd-02.qualcomm.com with ESMTP; 02 Dec 2021 01:52:43 -0800 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; 02 Dec 2021 01:52:43 -0800 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 15.2.922.19; Thu, 2 Dec 2021 01:52:42 -0800 Received: from blr-ubuntu-525.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 15.2.922.19; Thu, 2 Dec 2021 01:52:37 -0800 From: Souradeep Chowdhury To: , , , , , , CC: , , , , , , , , Souradeep Chowdhury Subject: [PATCH V2 2/8] dt-bindings: connector: Add property for EUD type-C connector Date: Thu, 2 Dec 2021 15:21:21 +0530 Message-ID: X-Mailer: git-send-email 2.7.4 In-Reply-To: References: 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) Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Added the property for EUD(Embedded USB Debugger) connector. EUD is a mini usb hub with debug and trace capabilities and it has a type C connector attached to it for role-switching. This connector is attached to EUD via port. Signed-off-by: Souradeep Chowdhury --- Documentation/devicetree/bindings/connector/usb-connector.yaml | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Documentation/devicetree/bindings/connector/usb-connector.yaml b/Documentation/devicetree/bindings/connector/usb-connector.yaml index 7eb8659..bd1823a 100644 --- a/Documentation/devicetree/bindings/connector/usb-connector.yaml +++ b/Documentation/devicetree/bindings/connector/usb-connector.yaml @@ -30,6 +30,10 @@ properties: - const: samsung,usb-connector-11pin - const: usb-b-connector + - items: + - const: qcom,usb-connector-eud + - const: usb-c-connector + label: description: Symbolic name for the connector. From patchwork Thu Dec 2 09:51:22 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Souradeep Chowdhury X-Patchwork-Id: 12652099 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 78BB2C433F5 for ; Thu, 2 Dec 2021 09:52:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1356697AbhLBJ4N (ORCPT ); Thu, 2 Dec 2021 04:56:13 -0500 Received: from alexa-out.qualcomm.com ([129.46.98.28]:30386 "EHLO alexa-out.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1356650AbhLBJ4K (ORCPT ); Thu, 2 Dec 2021 04:56:10 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1638438769; x=1669974769; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=tK9/BaPQbTP4zNp/vSDwy4WaGKZ5z4qtlj5T/6Z1zZc=; b=eVQWVUn4sDxXYqBuuLzQY9YUU4AwcxRh72EBFdSJ6G5AIYIOWdN8eeay iDqxZG9/PC5ES1Irixc1l68JOl3fZv3njML2FRNStfa50cAflHj87TIM5 oSO5thUbxYevSPczoYpuCqcHAHFQ5x1pJvIKenp+fZSxfYaApV29yXiY+ c=; Received: from ironmsg08-lv.qualcomm.com ([10.47.202.152]) by alexa-out.qualcomm.com with ESMTP; 02 Dec 2021 01:52:48 -0800 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg08-lv.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Dec 2021 01:52:48 -0800 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 15.2.922.19; Thu, 2 Dec 2021 01:52:48 -0800 Received: from blr-ubuntu-525.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 15.2.922.19; Thu, 2 Dec 2021 01:52:43 -0800 From: Souradeep Chowdhury To: , , , , , , CC: , , , , , , , , Souradeep Chowdhury Subject: [PATCH V2 3/8] bindings: usb: dwc3: Update dwc3 properties for EUD connector Date: Thu, 2 Dec 2021 15:21:22 +0530 Message-ID: <6a58f6b4b6f6328c8897b0e636466c270ee54da4.1638430506.git.quic_schowdhu@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: References: 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) Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add the connector property for dwc3 node. This connector can be used to role-switch the controller from device to host and vice versa. Signed-off-by: Souradeep Chowdhury --- Documentation/devicetree/bindings/usb/snps,dwc3.yaml | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml index 078fb78..9382168 100644 --- a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml +++ b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml @@ -318,6 +318,12 @@ properties: items: enum: [1, 4, 8, 16, 32, 64, 128, 256] + connector: + type: object + $ref: /connector/usb-connector.yaml# + description: + Connector for dual role switch, especially for "eud-usb-c-connector" + unevaluatedProperties: false required: From patchwork Thu Dec 2 09:51:23 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Souradeep Chowdhury X-Patchwork-Id: 12652101 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 35264C433F5 for ; Thu, 2 Dec 2021 09:52:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1356658AbhLBJ4R (ORCPT ); Thu, 2 Dec 2021 04:56:17 -0500 Received: from alexa-out.qualcomm.com ([129.46.98.28]:40078 "EHLO alexa-out.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1356670AbhLBJ4Q (ORCPT ); Thu, 2 Dec 2021 04:56:16 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1638438774; x=1669974774; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=14KrR4/MMtskTCagjldDybzElGI2BWUp5xLYygCBPlQ=; b=HWm+6oD76OviWrubKG681VeL0ZQeEgmpp0yYB04iGIuJ1McWK5ekry5g CIiFCKGryQLc9ifX5iswIZKJTFgnn3v3rssuAyJ7zRewTTJDG93j4soQi lnc2vBGlm7gO9RSrfnlqY8bz2jvolz7vgJbT3FUdXpLoyj8H0VGNxI3Xn 8=; Received: from ironmsg09-lv.qualcomm.com ([10.47.202.153]) by alexa-out.qualcomm.com with ESMTP; 02 Dec 2021 01:52:54 -0800 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg09-lv.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Dec 2021 01:52:54 -0800 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 15.2.922.19; Thu, 2 Dec 2021 01:52:53 -0800 Received: from blr-ubuntu-525.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 15.2.922.19; Thu, 2 Dec 2021 01:52:48 -0800 From: Souradeep Chowdhury To: , , , , , , CC: , , , , , , , , Souradeep Chowdhury Subject: [PATCH V2 4/8] usb: dwc3: drd: Register the eud connector child node for dwc3 Date: Thu, 2 Dec 2021 15:21:23 +0530 Message-ID: X-Mailer: git-send-email 2.7.4 In-Reply-To: References: 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) Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Register the child node for dwc3 which is the "eud_usb_connector". The eud driver will be able to switch the usb role from device to host and vice versa using the role switch property of dwc3 node. Signed-off-by: Souradeep Chowdhury --- drivers/usb/dwc3/drd.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/drivers/usb/dwc3/drd.c b/drivers/usb/dwc3/drd.c index d7f7683..b4ea55c 100644 --- a/drivers/usb/dwc3/drd.c +++ b/drivers/usb/dwc3/drd.c @@ -8,6 +8,7 @@ */ #include +#include #include #include #include @@ -164,6 +165,27 @@ static int dwc3_otg_get_irq(struct dwc3 *dwc) return irq; } +static int dwc3_register_eud(struct dwc3 *dwc) +{ + struct device *dev = dwc->dev; + struct device_node *np = dev->of_node; + int ret; + + of_get_child_by_name(np, "eud_usb_connector"); + if (!np) { + dev_dbg(dev, "no usb_connector child node specified\n"); + return 0; + } + + ret = of_platform_populate(np, NULL, NULL, dev); + if (ret) { + dev_err(dev, "failed to register usb_connector - %d\n", ret); + return ret; + } + + return 0; +} + void dwc3_otg_init(struct dwc3 *dwc) { u32 reg; @@ -580,6 +602,10 @@ int dwc3_drd_init(struct dwc3 *dwc) ret = dwc3_setup_role_switch(dwc); if (ret < 0) return ret; + + ret = dwc3_register_eud(dwc); + if (ret < 0) + return ret; } else if (dwc->edev) { dwc->edev_nb.notifier_call = dwc3_drd_notifier; ret = extcon_register_notifier(dwc->edev, EXTCON_USB_HOST, From patchwork Thu Dec 2 09:51:24 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Souradeep Chowdhury X-Patchwork-Id: 12652103 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 56909C4332F for ; Thu, 2 Dec 2021 09:53:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1356757AbhLBJ40 (ORCPT ); Thu, 2 Dec 2021 04:56:26 -0500 Received: from alexa-out-sd-02.qualcomm.com ([199.106.114.39]:26892 "EHLO alexa-out-sd-02.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1356713AbhLBJ4V (ORCPT ); Thu, 2 Dec 2021 04:56:21 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1638438779; x=1669974779; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=vHpx56BQetVRRX/nlyWns4ejtFMVAAmmvmRzCFh8kes=; b=wDKYS8mVBCDO2UEgoO70QkMj1LTC/2RAQpNSjYnWZ7bJwDhjO4XwjlXV odRNXym6JDlYf4UD3YZkkyh/Jy+wy580CCu8bnkuWi6uvhgmtJrbgtHwf Qn6th8E/18z4Lyac9lFv9lZT8Q94Myuu0Bl+2Jpc4Wr2U+lu/BbxnkhBQ s=; Received: from unknown (HELO ironmsg04-sd.qualcomm.com) ([10.53.140.144]) by alexa-out-sd-02.qualcomm.com with ESMTP; 02 Dec 2021 01:52:59 -0800 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; 02 Dec 2021 01:52:58 -0800 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 15.2.922.19; Thu, 2 Dec 2021 01:52:58 -0800 Received: from blr-ubuntu-525.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 15.2.922.19; Thu, 2 Dec 2021 01:52:53 -0800 From: Souradeep Chowdhury To: , , , , , , CC: , , , , , , , , Souradeep Chowdhury Subject: [PATCH V2 5/8] soc: qcom: eud: Add driver support for Embedded USB Debugger(EUD) Date: Thu, 2 Dec 2021 15:21:24 +0530 Message-ID: X-Mailer: git-send-email 2.7.4 In-Reply-To: References: 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) Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add support for control peripheral of EUD (Embedded USB Debugger) to listen to events such as USB attach/detach, pet EUD to indicate software is functional.Reusing the platform device kobj, sysfs entry 'enable' is created to enable or disable EUD. To enable the eud the following needs to be done echo 1 > /sys/bus/platform/.../enable To disable eud, following is the command echo 0 > /sys/bus/platform/.../enable Signed-off-by: Souradeep Chowdhury --- Documentation/ABI/testing/sysfs-driver-eud | 9 + drivers/soc/qcom/Kconfig | 10 ++ drivers/soc/qcom/Makefile | 1 + drivers/soc/qcom/qcom_eud.c | 268 +++++++++++++++++++++++++++++ 4 files changed, 288 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-driver-eud create mode 100644 drivers/soc/qcom/qcom_eud.c -- 2.7.4 diff --git a/Documentation/ABI/testing/sysfs-driver-eud b/Documentation/ABI/testing/sysfs-driver-eud new file mode 100644 index 0000000..eaf2e82 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-driver-eud @@ -0,0 +1,9 @@ +What: /sys/bus/platform/drivers/eud/.../enable +Date: October 2021 +Contact: Souradeep Chowdhury +Description: + The Enable/Disable sysfs interface for Embedded + USB Debugger(EUD). This enables and disables the + EUD based on a 1 or a 0 value. By enabling EUD, + the user is able to activate the mini-usb hub of + EUD for debug and trace capabilities. diff --git a/drivers/soc/qcom/Kconfig b/drivers/soc/qcom/Kconfig index 79b568f..a4db41b 100644 --- a/drivers/soc/qcom/Kconfig +++ b/drivers/soc/qcom/Kconfig @@ -42,6 +42,16 @@ config QCOM_CPR To compile this driver as a module, choose M here: the module will be called qcom-cpr +config QCOM_EUD + tristate "QCOM Embedded USB Debugger(EUD) Driver" + select USB_ROLE_SWITCH + help + This module enables support for Qualcomm Technologies, Inc. + Embedded USB Debugger (EUD). The EUD is a control peripheral + which reports VBUS attach/detach events and has USB-based + debug and trace capabilities. On selecting m, the module name + that is built is qcom_eud.ko + config QCOM_GENI_SE tristate "QCOM GENI Serial Engine Driver" depends on ARCH_QCOM || COMPILE_TEST diff --git a/drivers/soc/qcom/Makefile b/drivers/soc/qcom/Makefile index ad675a6..3331a40 100644 --- a/drivers/soc/qcom/Makefile +++ b/drivers/soc/qcom/Makefile @@ -4,6 +4,7 @@ obj-$(CONFIG_QCOM_AOSS_QMP) += qcom_aoss.o obj-$(CONFIG_QCOM_GENI_SE) += qcom-geni-se.o obj-$(CONFIG_QCOM_COMMAND_DB) += cmd-db.o obj-$(CONFIG_QCOM_CPR) += cpr.o +obj-$(CONFIG_QCOM_EUD) += qcom_eud.o obj-$(CONFIG_QCOM_GSBI) += qcom_gsbi.o obj-$(CONFIG_QCOM_MDT_LOADER) += mdt_loader.o obj-$(CONFIG_QCOM_OCMEM) += ocmem.o diff --git a/drivers/soc/qcom/qcom_eud.c b/drivers/soc/qcom/qcom_eud.c new file mode 100644 index 0000000..613ac41 --- /dev/null +++ b/drivers/soc/qcom/qcom_eud.c @@ -0,0 +1,268 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2015-2021, The Linux Foundation. All rights reserved. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define EUD_REG_INT1_EN_MASK 0x0024 +#define EUD_REG_INT_STATUS_1 0x0044 +#define EUD_REG_CTL_OUT_1 0x0074 +#define EUD_REG_VBUS_INT_CLR 0x0080 +#define EUD_REG_CSR_EUD_EN 0x1014 +#define EUD_REG_SW_ATTACH_DET 0x1018 +#define EUD_REG_EUD_EN2 0x0000 + +#define EUD_ENABLE BIT(0) +#define EUD_INT_PET_EUD BIT(0) +#define EUD_INT_VBUS BIT(2) +#define EUD_INT_SAFE_MODE BIT(4) +#define EUD_INT_ALL (EUD_INT_VBUS|EUD_INT_SAFE_MODE) + +struct eud_chip { + struct device *dev; + struct usb_role_switch *role_sw; + void __iomem *eud_reg_base; + void __iomem *eud_mode_mgr2_phys_base; + unsigned int int_status; + int eud_irq; + bool enable; + bool usb_attach; + +}; + +static int enable_eud(struct eud_chip *priv) +{ + writel(EUD_ENABLE, priv->eud_reg_base + EUD_REG_CSR_EUD_EN); + writel(EUD_INT_VBUS | EUD_INT_SAFE_MODE, + priv->eud_reg_base + EUD_REG_INT1_EN_MASK); + writel(1, priv->eud_mode_mgr2_phys_base + EUD_REG_EUD_EN2); + + return usb_role_switch_set_role(priv->role_sw, USB_ROLE_DEVICE); +} + +static void disable_eud(struct eud_chip *priv) +{ + writel(0, priv->eud_reg_base + EUD_REG_CSR_EUD_EN); + writel(0, priv->eud_mode_mgr2_phys_base + EUD_REG_EUD_EN2); +} + +static ssize_t enable_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct eud_chip *chip = dev_get_drvdata(dev); + + return sysfs_emit(buf, "%d\n", chip->enable); +} + +static ssize_t enable_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct eud_chip *chip = dev_get_drvdata(dev); + bool enable; + int ret; + + if (kstrtobool(buf, &enable)) + return -EINVAL; + + if (enable) { + ret = enable_eud(chip); + if (!ret) + chip->enable = enable; + } else { + disable_eud(chip); + } + + return count; +} + +static DEVICE_ATTR_RW(enable); + +static struct attribute *eud_attrs[] = { + &dev_attr_enable.attr, + NULL, +}; + +static struct attribute_group attr_group = { + .attrs = eud_attrs, +}; + +static const struct attribute_group *attr_groups[] = { + &attr_group, + NULL +}; + +static void usb_attach_detach(struct eud_chip *chip) +{ + u32 reg; + + /* read ctl_out_1[4] to find USB attach or detach event */ + reg = readl(chip->eud_reg_base + EUD_REG_CTL_OUT_1); + if (reg & EUD_INT_SAFE_MODE) + chip->usb_attach = true; + else + chip->usb_attach = false; + + /* set and clear vbus_int_clr[0] to clear interrupt */ + writel(BIT(0), chip->eud_reg_base + EUD_REG_VBUS_INT_CLR); + writel(0, chip->eud_reg_base + EUD_REG_VBUS_INT_CLR); +} + +static void pet_eud(struct eud_chip *chip) +{ + u32 reg; + int ret; + + /* read sw_attach_det[0] to find attach/detach event */ + reg = readl(chip->eud_reg_base + EUD_REG_SW_ATTACH_DET); + if (reg & EUD_INT_PET_EUD) { + /* Detach & Attach pet for EUD */ + writel(0, chip->eud_reg_base + EUD_REG_SW_ATTACH_DET); + /* Delay to make sure detach pet is done before attach pet */ + ret = readl_poll_timeout(chip->eud_reg_base + EUD_REG_SW_ATTACH_DET, + reg, (reg == 0), 1, 100); + if (ret) { + dev_err(chip->dev, "Detach pet failed\n"); + return; + } + + writel(EUD_INT_PET_EUD, chip->eud_reg_base + + EUD_REG_SW_ATTACH_DET); + } else { + /* Attach pet for EUD */ + writel(EUD_INT_PET_EUD, chip->eud_reg_base + + EUD_REG_SW_ATTACH_DET); + } +} + +static irqreturn_t handle_eud_irq(int irq, void *data) +{ + struct eud_chip *chip = data; + u32 reg; + + /* read status register and find out which interrupt triggered */ + reg = readl(chip->eud_reg_base + EUD_REG_INT_STATUS_1); + switch (reg & EUD_INT_ALL) { + case EUD_INT_VBUS: + chip->int_status = EUD_INT_VBUS; + usb_attach_detach(chip); + return IRQ_WAKE_THREAD; + case EUD_INT_SAFE_MODE: + pet_eud(chip); + break; + default: + return IRQ_NONE; + } + return IRQ_HANDLED; +} + +static irqreturn_t handle_eud_irq_thread(int irq, void *data) +{ + struct eud_chip *chip = data; + int ret; + + if (chip->int_status == EUD_INT_VBUS) { + if (chip->usb_attach) + ret = usb_role_switch_set_role(chip->role_sw, USB_ROLE_DEVICE); + else + ret = usb_role_switch_set_role(chip->role_sw, USB_ROLE_HOST); + if (ret) + dev_err(chip->dev, "failed to set role switch\n"); + } + + return IRQ_HANDLED; +} + +static int eud_probe(struct platform_device *pdev) +{ + struct eud_chip *chip; + struct fwnode_handle *fwnode = pdev->dev.fwnode, *ep, *connector; + int ret; + + chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL); + if (!chip) + return -ENOMEM; + + chip->dev = &pdev->dev; + + ep = fwnode_graph_get_next_endpoint(fwnode, NULL); + if (!ep) + return -ENODEV; + + connector = fwnode_graph_get_remote_port_parent(ep); + fwnode_handle_put(ep); + if (!connector) + return -ENODEV; + + chip->role_sw = fwnode_usb_role_switch_get(connector); + if (IS_ERR(chip->role_sw)) { + return dev_err_probe(chip->dev, PTR_ERR(chip->role_sw), + "failed to get role switch\n"); + } + + chip->eud_reg_base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(chip->eud_reg_base)) + return PTR_ERR(chip->eud_reg_base); + + chip->eud_mode_mgr2_phys_base = devm_platform_ioremap_resource(pdev, 1); + if (IS_ERR(chip->eud_mode_mgr2_phys_base)) + return PTR_ERR(chip->eud_mode_mgr2_phys_base); + + chip->eud_irq = platform_get_irq(pdev, 0); + ret = devm_request_threaded_irq(&pdev->dev, chip->eud_irq, handle_eud_irq, + handle_eud_irq_thread, IRQF_ONESHOT, NULL, chip); + if (ret) + return dev_err_probe(chip->dev, ret, "failed to allocate irq\n"); + + enable_irq_wake(chip->eud_irq); + + platform_set_drvdata(pdev, chip); + + return 0; +} + +static int eud_remove(struct platform_device *pdev) +{ + struct eud_chip *chip = platform_get_drvdata(pdev); + + if (chip->enable) + disable_eud(chip); + + device_init_wakeup(&pdev->dev, false); + disable_irq_wake(chip->eud_irq); + + return 0; +} + +static const struct of_device_id eud_dt_match[] = { + { .compatible = "qcom,sc7280-eud" }, + { } +}; +MODULE_DEVICE_TABLE(of, eud_dt_match); + +static struct platform_driver eud_driver = { + .probe = eud_probe, + .remove = eud_remove, + .driver = { + .name = "eud", + .dev_groups = attr_groups, + .of_match_table = eud_dt_match, + }, +}; +module_platform_driver(eud_driver); + +MODULE_DESCRIPTION("QTI EUD driver"); +MODULE_LICENSE("GPL v2"); From patchwork Thu Dec 2 09:51:25 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Souradeep Chowdhury X-Patchwork-Id: 12652105 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 970FFC433EF for ; Thu, 2 Dec 2021 09:53:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1356781AbhLBJ4m (ORCPT ); Thu, 2 Dec 2021 04:56:42 -0500 Received: from alexa-out-sd-01.qualcomm.com ([199.106.114.38]:58218 "EHLO alexa-out-sd-01.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1356778AbhLBJ43 (ORCPT ); Thu, 2 Dec 2021 04:56:29 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1638438787; x=1669974787; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; 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Thu, 2 Dec 2021 01:52:58 -0800 From: Souradeep Chowdhury To: , , , , , , CC: , , , , , , , , Souradeep Chowdhury Subject: [PATCH V2 6/8] arm64: dts: qcom: sc7280: Add EUD dt node and dwc3 connector Date: Thu, 2 Dec 2021 15:21:25 +0530 Message-ID: X-Mailer: git-send-email 2.7.4 In-Reply-To: References: 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) Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add the Embedded USB Debugger(EUD) device tree node. The node contains EUD base register region and EUD mode manager register regions along with the interrupt entry. Also add the connector to EUD which is mapped as the child of dwc3. The connector is attached to EUD via port. Also add the role-switch property to dwc3 node. Signed-off-by: Souradeep Chowdhury --- arch/arm64/boot/dts/qcom/sc7280.dtsi | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi index 53a21d0..2d14e5c 100644 --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi @@ -1315,6 +1315,18 @@ phys = <&usb_2_hsphy>; phy-names = "usb2-phy"; maximum-speed = "high-speed"; + usb-role-switch; + usb_con: eud_usb_connector { + compatible = "qcom,usb-connector-eud", + "usb-c-connector"; + ports { + port@0 { + usb2_role_switch: endpoint { + remote-endpoint = <&eud_ep>; + }; + }; + }; + }; }; }; @@ -1339,6 +1351,19 @@ interrupts = ; }; + eud: eud@88e0000 { + compatible = "qcom,sc7280-eud","qcom,eud"; + reg = <0 0x88e0000 0 0x2000>, + <0 0x88e2000 0 0x1000>; + interrupt-parent = <&pdc>; + interrupts = <11 IRQ_TYPE_LEVEL_HIGH>; + port { + eud_ep: endpoint { + remote-endpoint = <&usb2_role_switch>; + }; + }; + }; + nsp_noc: interconnect@a0c0000 { reg = <0 0x0a0c0000 0 0x10000>; compatible = "qcom,sc7280-nsp-noc"; From patchwork Thu Dec 2 09:51:26 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Souradeep Chowdhury X-Patchwork-Id: 12652107 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 A5794C433EF for ; Thu, 2 Dec 2021 09:53:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1356802AbhLBJ4t (ORCPT ); Thu, 2 Dec 2021 04:56:49 -0500 Received: from alexa-out.qualcomm.com ([129.46.98.28]:44444 "EHLO alexa-out.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1356790AbhLBJ4b (ORCPT ); Thu, 2 Dec 2021 04:56:31 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1638438789; x=1669974789; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=cF/GECuwp1S1UbdJMGwmQpraS1FiRU+LUbq4e6yb5EQ=; b=VwZwWdr5L6nCm3eRipv/bSa3fU3SXzCpI8MJUGFuyQy+lOK35lXd3Rj5 8x8CyqntOVLNImvcbAyiMBbLE3QXl/cwGlmDdJEzDa+vuIGaxn+LKaGQ9 xXXW8o0DZcHCzMVC4qhCwdKL3mMEc2buL0N5xxQe4NdXMBB+YnydGUI1a Q=; Received: from ironmsg08-lv.qualcomm.com ([10.47.202.152]) by alexa-out.qualcomm.com with ESMTP; 02 Dec 2021 01:53:09 -0800 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg08-lv.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Dec 2021 01:53:09 -0800 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 15.2.922.19; Thu, 2 Dec 2021 01:53:08 -0800 Received: from blr-ubuntu-525.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 15.2.922.19; Thu, 2 Dec 2021 01:53:03 -0800 From: Souradeep Chowdhury To: , , , , , , CC: , , , , , , , , Souradeep Chowdhury Subject: [PATCH V2 7/8] arm64: dts: qcom: sc7280: Set the default dr_mode for usb2 Date: Thu, 2 Dec 2021 15:21:26 +0530 Message-ID: <0da9d07fc955a0cdeb2b702b3942f45ad0dfa232.1638430506.git.quic_schowdhu@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: References: 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) Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Set the default dr_mode for usb2 node to "otg" to enable. role-switch for EUD(Embedded USB Debugger) connector node. Signed-off-by: Souradeep Chowdhury --- arch/arm64/boot/dts/qcom/sc7280-idp.dts | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/sc7280-idp.dts b/arch/arm64/boot/dts/qcom/sc7280-idp.dts index 64fc22a..7c69c78 100644 --- a/arch/arm64/boot/dts/qcom/sc7280-idp.dts +++ b/arch/arm64/boot/dts/qcom/sc7280-idp.dts @@ -61,6 +61,10 @@ modem-init; }; +&usb_2_dwc3 { + dr_mode = "otg"; +}; + &pmk8350_vadc { pmr735a_die_temp { reg = ; From patchwork Thu Dec 2 09:51:27 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Souradeep Chowdhury X-Patchwork-Id: 12652139 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 12FE7C433FE for ; Thu, 2 Dec 2021 09:53:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1356784AbhLBJ5M (ORCPT ); Thu, 2 Dec 2021 04:57:12 -0500 Received: from alexa-out-sd-02.qualcomm.com ([199.106.114.39]:27019 "EHLO alexa-out-sd-02.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1356821AbhLBJ4y (ORCPT ); Thu, 2 Dec 2021 04:56:54 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1638438812; x=1669974812; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=ApkT5CfALdPrbby3Mvv70S+36/G3OWU+coKJm3QqI+U=; b=h9b+8iETBrnZC79hvjEVt2LCgGwVOuMWhYXcJTklez1982F2dz3SjF3G cCoDr4n/W4mHZHctSDjO6m1u4ivFV3Muqrc4CERPufdy1vb8ZcTTVdjso HC6XAByE6cf6kMzye8MibSy76Kw583Gvk0ntXTAdbA8L5OR20zRB/zCiT s=; Received: from unknown (HELO ironmsg03-sd.qualcomm.com) ([10.53.140.143]) by alexa-out-sd-02.qualcomm.com with ESMTP; 02 Dec 2021 01:53:31 -0800 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg03-sd.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Dec 2021 01:53:18 -0800 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 15.2.922.19; Thu, 2 Dec 2021 01:53:14 -0800 Received: from blr-ubuntu-525.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 15.2.922.19; Thu, 2 Dec 2021 01:53:08 -0800 From: Souradeep Chowdhury To: , , , , , , CC: , , , , , , , , Souradeep Chowdhury Subject: [PATCH V2 8/8] MAINTAINERS: Add maintainer entry for EUD Date: Thu, 2 Dec 2021 15:21:27 +0530 Message-ID: <7e5fbfa45746143fb0ee3235d9e00557cdfcac9a.1638430506.git.quic_schowdhu@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: References: 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) Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add the entry for maintainer for EUD driver and other associated files. Signed-off-by: Souradeep Chowdhury --- MAINTAINERS | 8 ++++++++ 1 file changed, 8 insertions(+) -- 2.7.4 diff --git a/MAINTAINERS b/MAINTAINERS index 0227e15..54f616a 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -7018,6 +7018,14 @@ F: include/trace/events/mdio.h F: include/uapi/linux/mdio.h F: include/uapi/linux/mii.h +EUD-QCOM +M: Souradeep Chowdhury +L: linux-arm-msm@vger.kernel.org +S: Maintained +F: Documentation/ABI/testing/sysfs-driver-eud +F: Documentation/devicetree/bindings/arm/msm/qcom,eud.yaml +F: drivers/usb/common/qcom_eud.c + EXFAT FILE SYSTEM M: Namjae Jeon M: Sungjong Seo