From patchwork Fri Jan 21 13:53:46 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Souradeep Chowdhury X-Patchwork-Id: 12719738 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 C0C04C433EF for ; Fri, 21 Jan 2022 13:55:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350341AbiAUNze (ORCPT ); Fri, 21 Jan 2022 08:55:34 -0500 Received: from alexa-out-sd-02.qualcomm.com ([199.106.114.39]:48697 "EHLO alexa-out-sd-02.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1380727AbiAUNzb (ORCPT ); Fri, 21 Jan 2022 08:55:31 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1642773331; x=1674309331; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=1cgvw3TuDnR0tiIAfdYVILOiGl3xRJe7Hu9djvWiJQI=; b=uEmo7OqQqJteWVywYYeSgE3iJ0ImAgMXsiX361vgY8o4I8lMiyp4YjpM uTd88IWh0blAo5kuMEr1sJSGlugq3yR5nuTZTGGr/PALlaD6LXS0Dl3b2 Zpxi3CYYmUPmzcHkwfMfJcIi9aXknzZ2za7Lty+tQwWEmHM9iqR7XkmDU w=; Received: from unknown (HELO ironmsg05-sd.qualcomm.com) ([10.53.140.145]) by alexa-out-sd-02.qualcomm.com with ESMTP; 21 Jan 2022 05:55:31 -0800 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg05-sd.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Jan 2022 05:55:30 -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; Fri, 21 Jan 2022 05:55:30 -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; Fri, 21 Jan 2022 05:55:24 -0800 From: Souradeep Chowdhury To: , , , , , , CC: , , , , , , , , Subject: [PATCH V4 1/6] dt-bindings: Add the yaml bindings for EUD Date: Fri, 21 Jan 2022 19:23:46 +0530 Message-ID: <91c61d815123fb0b7e067e368d784e3434997068.1642768837.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 Reviewed-by: Bjorn Andersson --- .../devicetree/bindings/soc/qcom/qcom,eud.yaml | 77 ++++++++++++++++++++++ 1 file changed, 77 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,eud.yaml -- 2.7.4 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..c98aab2 --- /dev/null +++ b/Documentation/devicetree/bindings/soc/qcom/qcom,eud.yaml @@ -0,0 +1,77 @@ +# 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 + maxItems: 1 + + ports: + $ref: /schemas/graph.yaml#/properties/ports + description: + These ports are to be attached to the endpoint of the DWC3 controller node + and type C connector node. The controller has the "usb-role-switch" + property. + + properties: + port@0: + $ref: /schemas/graph.yaml#/properties/port + description: This port is to be attached to the DWC3 controller. + + port@1: + $ref: /schemas/graph.yaml#/properties/port + description: This port is to be attached to the type C connector. + +required: + - compatible + - reg + - ports + +additionalProperties: false + +examples: + - | + eud@88e0000 { + compatible = "qcom,sc7280-eud","qcom,eud"; + reg = <0x88e0000 0x2000>, + <0x88e2000 0x1000>; + ports { + #address-cells = <1>; + #size-cells = <0>; + port@0 { + reg = <0>; + eud_ep: endpoint { + remote-endpoint = <&usb2_role_switch>; + }; + }; + port@1 { + reg = <1>; + eud_con: endpoint { + remote-endpoint = <&con_eud>; + }; + }; + }; + }; From patchwork Fri Jan 21 13:53:47 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Souradeep Chowdhury X-Patchwork-Id: 12719739 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 BE4A0C433FE for ; Fri, 21 Jan 2022 13:55:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1380821AbiAUNzh (ORCPT ); Fri, 21 Jan 2022 08:55:37 -0500 Received: from alexa-out-sd-01.qualcomm.com ([199.106.114.38]:39457 "EHLO alexa-out-sd-01.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1380829AbiAUNzh (ORCPT ); Fri, 21 Jan 2022 08:55:37 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1642773337; x=1674309337; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=SwlNbX5wfNFRpOd9XnI3lnANLmRGA7YuZdu5yHGhgPA=; b=lJkLcNgLzcIP6bvJ1CmVSMMQmGeNo33Eu85Djc6TmUGnHTFukeuUydCf O5Ntz0OoYd/DZI0TPjvJp1gthtpmLSgA9SUzJbokOkVXHhcLwWurO9P2C VfAuJMpyLTilddMcVS+fslk4qvCF/JGcy4GEd7Ry08UYOVXpfwowBsLBJ g=; Received: from unknown (HELO ironmsg03-sd.qualcomm.com) ([10.53.140.143]) by alexa-out-sd-01.qualcomm.com with ESMTP; 21 Jan 2022 05:55:37 -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; 21 Jan 2022 05:55:36 -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; Fri, 21 Jan 2022 05:55:36 -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; Fri, 21 Jan 2022 05:55:30 -0800 From: Souradeep Chowdhury To: , , , , , , CC: , , , , , , , , Subject: [PATCH V4 2/6] bindings: usb: dwc3: Update dwc3 properties for EUD connector Date: Fri, 21 Jan 2022 19:23:47 +0530 Message-ID: <7ddaf7dc192c5f03f70d27297551e758a39a4ab5.1642768837.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 ports property for dwc3 node. This port can be used by the Embedded USB Debugger for role switching the controller from device to host mode and vice versa. Signed-off-by: Souradeep Chowdhury --- Documentation/devicetree/bindings/usb/snps,dwc3.yaml | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml index d29ffcd..ccb1236 100644 --- a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml +++ b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml @@ -332,6 +332,16 @@ properties: items: enum: [1, 4, 8, 16, 32, 64, 128, 256] + ports: + $ref: /schemas/graph.yaml#/properties/ports + description: + This port is to be attached to the endpoint of the Embedded USB Debugger. + + properties: + port@0: + $ref: /schemas/graph.yaml#/properties/port + description: Connector endpoint of Embedded USB debugger. + unevaluatedProperties: false required: From patchwork Fri Jan 21 13:53:48 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Souradeep Chowdhury X-Patchwork-Id: 12719740 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 B0131C433F5 for ; Fri, 21 Jan 2022 13:55:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1380815AbiAUNzo (ORCPT ); Fri, 21 Jan 2022 08:55:44 -0500 Received: from alexa-out-sd-02.qualcomm.com ([199.106.114.39]:41947 "EHLO alexa-out-sd-02.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1380845AbiAUNzn (ORCPT ); Fri, 21 Jan 2022 08:55:43 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1642773342; x=1674309342; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=VBio0j/QDyws1/pIBGem9GsL5YO7LoerdkB2IhF8+bs=; b=p0RwhjMsqyGdLhyy2m0IIspUynxZEbJQVfQlhDRmIsLxfa6kGQ0b9kUc 6fWdYQlWMtC3nMWu75KizNqUurUIqCqgbuDd80evBUlYriih3s7xp2Y9c 4sQnA99W4NULa75NxJV2wADHn5AVavfLglAwrAvKcxGvQjNYERhQa4AOa Y=; Received: from unknown (HELO ironmsg01-sd.qualcomm.com) ([10.53.140.141]) by alexa-out-sd-02.qualcomm.com with ESMTP; 21 Jan 2022 05:55:42 -0800 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg01-sd.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Jan 2022 05:55:42 -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; Fri, 21 Jan 2022 05:55:42 -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; Fri, 21 Jan 2022 05:55:36 -0800 From: Souradeep Chowdhury To: , , , , , , CC: , , , , , , , , Subject: [PATCH V4 3/6] soc: qcom: eud: Add driver support for Embedded USB Debugger(EUD) Date: Fri, 21 Jan 2022 19:23:48 +0530 Message-ID: <7ccee5ae484e6917f5838c8abde368680ec63d05.1642768837.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 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 | 250 +++++++++++++++++++++++++++++ 4 files changed, 270 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..2381552 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-driver-eud @@ -0,0 +1,9 @@ +What: /sys/bus/platform/drivers/eud/.../enable +Date: January 2022 +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 e718b87..abc6be0 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 70d5de6..e0c7d2d 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..a538645 --- /dev/null +++ b/drivers/soc/qcom/qcom_eud.c @@ -0,0 +1,250 @@ +// 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 + +#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 *base; + void __iomem *mode_mgr; + unsigned int int_status; + int irq; + bool enabled; + bool usb_attached; +}; + +static int enable_eud(struct eud_chip *priv) +{ + writel(EUD_ENABLE, priv->base + EUD_REG_CSR_EUD_EN); + writel(EUD_INT_VBUS | EUD_INT_SAFE_MODE, + priv->base + EUD_REG_INT1_EN_MASK); + writel(1, priv->mode_mgr + 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->base + EUD_REG_CSR_EUD_EN); + writel(0, priv->mode_mgr + 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->enabled); +} + +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->enabled = enable; + else + disable_eud(chip); + } else { + disable_eud(chip); + } + + return count; +} + +static DEVICE_ATTR_RW(enable); + +static struct attribute *eud_attrs[] = { + &dev_attr_enable.attr, + NULL, +}; +ATTRIBUTE_GROUPS(eud); + +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->base + EUD_REG_CTL_OUT_1); + chip->usb_attached = reg & EUD_INT_SAFE_MODE; +} + +static void pet_eud(struct eud_chip *chip) +{ + u32 reg; + int ret; + + /* When the EUD_INT_PET_EUD in SW_ATTACH_DET is set, the cable has been + * disconnected and we need to detach the pet to check if EUD is in safe + * mode before attaching again. + */ + reg = readl(chip->base + EUD_REG_SW_ATTACH_DET); + if (reg & EUD_INT_PET_EUD) { + /* Detach & Attach pet for EUD */ + writel(0, chip->base + EUD_REG_SW_ATTACH_DET); + /* Delay to make sure detach pet is done before attach pet */ + ret = readl_poll_timeout(chip->base + EUD_REG_SW_ATTACH_DET, + reg, (reg == 0), 1, 100); + if (ret) { + dev_err(chip->dev, "Detach pet failed\n"); + return; + } + } + /* Attach pet for EUD */ + writel(EUD_INT_PET_EUD, chip->base +EUD_REG_SW_ATTACH_DET); +} + +static irqreturn_t handle_eud_irq(int irq, void *data) +{ + struct eud_chip *chip = data; + u32 reg; + + reg = readl(chip->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); + return IRQ_HANDLED; + default: + return IRQ_NONE; + } +} + +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_attached) + 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"); + } + + /* set and clear vbus_int_clr[0] to clear interrupt */ + writel(BIT(0), chip->base + EUD_REG_VBUS_INT_CLR); + writel(0, chip->base + EUD_REG_VBUS_INT_CLR); + + return IRQ_HANDLED; +} + +static int eud_probe(struct platform_device *pdev) +{ + struct eud_chip *chip; + struct fwnode_handle *fwnode = pdev->dev.fwnode, *dwc3; + int ret; + + chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL); + if (!chip) + return -ENOMEM; + + chip->dev = &pdev->dev; + + dwc3 = fwnode_graph_get_next_endpoint(fwnode, NULL); + if (!dwc3) + return -ENODEV; + + chip->role_sw = fwnode_usb_role_switch_get(dwc3); + if (IS_ERR(chip->role_sw)) { + ret = PTR_ERR(chip->role_sw); + usb_role_switch_put(chip->role_sw); + return dev_err_probe(chip->dev, ret, + "failed to get role switch\n"); + } + + chip->base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(chip->base)) + return PTR_ERR(chip->base); + + chip->mode_mgr = devm_platform_ioremap_resource(pdev, 1); + if (IS_ERR(chip->mode_mgr)) + return PTR_ERR(chip->mode_mgr); + + chip->irq = platform_get_irq(pdev, 0); + ret = devm_request_threaded_irq(&pdev->dev, chip->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->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->enabled) + disable_eud(chip); + + device_init_wakeup(&pdev->dev, false); + disable_irq_wake(chip->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 = "qcom_eud", + .dev_groups = eud_groups, + .of_match_table = eud_dt_match, + }, +}; +module_platform_driver(eud_driver); + +MODULE_DESCRIPTION("QTI EUD driver"); +MODULE_LICENSE("GPL v2"); From patchwork Fri Jan 21 13:53:49 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Souradeep Chowdhury X-Patchwork-Id: 12719741 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 D16DDC433EF for ; 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21 Jan 2022 05:55:48 -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; Fri, 21 Jan 2022 05:55:47 -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; Fri, 21 Jan 2022 05:55:42 -0800 From: Souradeep Chowdhury To: , , , , , , CC: , , , , , , , , Subject: [PATCH V4 4/6] arm64: dts: qcom: sc7280: Add EUD dt node and dwc3 connector Date: Fri, 21 Jan 2022 19:23:49 +0530 Message-ID: <3ca56ffa9e4aa73f3c3f36d0edad0827ee11d953.1642768837.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 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 typec connector node for EUD which is attached to EUD node via port. EUD is also attached to DWC3 node via port. Also add the role-switch property to dwc3 node. Signed-off-by: Souradeep Chowdhury --- arch/arm64/boot/dts/qcom/sc7280.dtsi | 39 ++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi index 937c2e0..daac831 100644 --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi @@ -2583,6 +2583,14 @@ phys = <&usb_2_hsphy>; phy-names = "usb2-phy"; maximum-speed = "high-speed"; + usb-role-switch; + ports { + port@0 { + usb2_role_switch: endpoint { + remote-endpoint = <&eud_ep>; + }; + }; + }; }; }; @@ -2624,6 +2632,37 @@ 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>; + ports { + port@0 { + eud_ep: endpoint { + remote-endpoint = <&usb2_role_switch>; + }; + }; + port@1 { + eud_con: endpoint { + remote-endpoint = <&con_eud>; + }; + }; + }; + }; + + eud_typec: connector { + compatible = "usb-c-connector"; + ports { + port@0 { + con_eud: endpoint { + remote-endpoint = <&eud_con>; + }; + }; + }; + }; + nsp_noc: interconnect@a0c0000 { reg = <0 0x0a0c0000 0 0x10000>; compatible = "qcom,sc7280-nsp-noc"; From patchwork Fri Jan 21 13:53:50 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Souradeep Chowdhury X-Patchwork-Id: 12719742 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 C0A11C433F5 for ; Fri, 21 Jan 2022 13:55:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1380829AbiAUNzy (ORCPT ); Fri, 21 Jan 2022 08:55:54 -0500 Received: from alexa-out-sd-01.qualcomm.com ([199.106.114.38]:39485 "EHLO alexa-out-sd-01.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1380845AbiAUNzy (ORCPT ); Fri, 21 Jan 2022 08:55:54 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1642773354; x=1674309354; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=drqZVZe4KU7lEdfNU9kq9h8bXnkgN0O14JdKWXV2obQ=; b=GSetBzbyXEiR6x3uhLUsfxWdOKNCb0dfcKvukKebDARQm0o8VMySeqSm N3lCf44M1trbsoIszKuRRz0nfJZXoi1ybQQ3gbJAAwP8z4E40X3vLNOJ/ 3FAQXT8ZM26tNLhKAvkN2YpStYeG+L+RrfhW1UHZ4Oy3b/P4er6vdTkjI Q=; Received: from unknown (HELO ironmsg04-sd.qualcomm.com) ([10.53.140.144]) by alexa-out-sd-01.qualcomm.com with ESMTP; 21 Jan 2022 05:55:54 -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; 21 Jan 2022 05:55:53 -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; Fri, 21 Jan 2022 05:55:53 -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; Fri, 21 Jan 2022 05:55:47 -0800 From: Souradeep Chowdhury To: , , , , , , CC: , , , , , , , , Subject: [PATCH V4 5/6] arm64: dts: qcom: sc7280: Set the default dr_mode for usb2 Date: Fri, 21 Jan 2022 19:23:50 +0530 Message-ID: <232f37a6f76c3f24a122f32978b5c1e73dc7e7c4.1642768837.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 Reviewed-by: Bjorn Andersson --- 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 9b991ba..f40eaa5 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_rtc { status = "okay"; }; From patchwork Fri Jan 21 13:53:51 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Souradeep Chowdhury X-Patchwork-Id: 12719743 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 62DC6C433EF for ; Fri, 21 Jan 2022 13:56:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350769AbiAUN4B (ORCPT ); Fri, 21 Jan 2022 08:56:01 -0500 Received: from alexa-out-sd-02.qualcomm.com ([199.106.114.39]:6828 "EHLO alexa-out-sd-02.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1380874AbiAUN4A (ORCPT ); Fri, 21 Jan 2022 08:56:00 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1642773360; x=1674309360; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=/tJxn3aegN2u9McR6qwjkE21gbqdzXpJZKU6OYmDMns=; b=T3qoZ7Dx3zeimP67JAWv1jr9TtMWMbwcEHxHeP+zYhwHi+RRZZg+Z3gX 67Et6dkSYCwESF6sCnyPibrUcQWyWlu6CbDzZQ+SqkJ0Z3HvQoB3SIp61 qLsZNvnCg4RidnSDv82Se+7AsI3Xe+7ZwD4MCxcgNFsZnhwQUF+g3IL5M 0=; Received: from unknown (HELO ironmsg01-sd.qualcomm.com) ([10.53.140.141]) by alexa-out-sd-02.qualcomm.com with ESMTP; 21 Jan 2022 05:55:59 -0800 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg01-sd.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Jan 2022 05:55:59 -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; Fri, 21 Jan 2022 05:55:59 -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; Fri, 21 Jan 2022 05:55:53 -0800 From: Souradeep Chowdhury To: , , , , , , CC: , , , , , , , , Subject: [PATCH V4 6/6] MAINTAINERS: Add maintainer entry for EUD Date: Fri, 21 Jan 2022 19:23:51 +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 entry for maintainer for EUD driver and other associated files. Signed-off-by: Souradeep Chowdhury Reviewed-by: Bjorn Andersson --- MAINTAINERS | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index b84e2d5..0fa9d54 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -7227,6 +7227,14 @@ F: include/uapi/linux/mdio.h F: include/uapi/linux/mii.h F: net/core/of_net.c +QCOM EMBEDDED USB DEBUGGER(EUD) +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 + EXEC & BINFMT API R: Eric Biederman R: Kees Cook