From patchwork Fri Oct 11 12:43:59 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heikki Krogerus X-Patchwork-Id: 834862 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1F2E6216A11 for ; Fri, 11 Oct 2024 12:44:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.12 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728650650; cv=none; b=eFWVSu3rZHxJcrTZvG1eyV/p9NXuR2IllWQI1hinsFPqCYZ96lnVl1N1tyGetv7E/Y0L+wfkl5lTsc5FiQH2PNCD9DJxvfF+UyzrKIRMlEumQtq+/y7MVHOpsTaofisyUWhzsBTz7/z3q/jAYgdWJU0nZtRlcp6+zP605s/hrE0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728650650; c=relaxed/simple; bh=jKBDXfMzIO82uIeoIJBjBgs5eQuYwr+0uHE3ObyOq7k=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=r5ERtkoY3N15v/jV23RC4XWRgb2uXdCTmqTQnpkJKHOgCe6FEY4YIQMgk3aB6bCKyDwkpX6As64Evaavlh8oBAh4n/BTzJF9FTUjNCRpxFPbnip3E37NN50mjV5KqXMGHP51LElSv9aR8FLgzvxM1+Yz1sKoOZ06Fn22xjiq1ns= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=g+rLzQJe; arc=none smtp.client-ip=192.198.163.12 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="g+rLzQJe" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1728650648; x=1760186648; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=jKBDXfMzIO82uIeoIJBjBgs5eQuYwr+0uHE3ObyOq7k=; b=g+rLzQJe0iI/lSmKUdDGEnQrWZVAHPuczEbJPjfro4Dpi66FFo++mzlr q2nUQc6pMxQNX879MxPeGHFtN1rHw5Rj8t0f61qhAGv23OCPsQH06wCsQ F2JV4q64xn3m3JZIC6tK2iKJaan8iNsPhzlpv3nqkmqsob2W6LzC/s54F 8KSQTJuTmVzGYRtgf2jNg6/Cis/R+v/eu4lYbL+fMTSzsOWN1IKSyRePL MmT9DEveM6ujIRvmsVf3FyaTuSMpnXui5CJF42R06x00i6COlDs39H+zw 0tPrS9LOhr9ns8zX3nnhuqZcco2l+ddoLdDNOx+pCqaZB+vLsKJPaD46e Q==; X-CSE-ConnectionGUID: HnstIjgMSb+AFYYhLXCYsA== X-CSE-MsgGUID: ODI7k0QpSIql6Fwtof3X3w== X-IronPort-AV: E=McAfee;i="6700,10204,11221"; a="31957695" X-IronPort-AV: E=Sophos;i="6.11,195,1725346800"; d="scan'208";a="31957695" Received: from orviesa008.jf.intel.com ([10.64.159.148]) by fmvoesa106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Oct 2024 05:44:08 -0700 X-CSE-ConnectionGUID: rneTd7lTR/qLp7C+le+o6w== X-CSE-MsgGUID: ILInryWDSNCe3HQTvZBfQA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.11,195,1725346800"; d="scan'208";a="77716145" Received: from black.fi.intel.com (HELO black.fi.intel.com.) ([10.237.72.28]) by orviesa008.jf.intel.com with ESMTP; 11 Oct 2024 05:44:05 -0700 From: Heikki Krogerus To: Greg Kroah-Hartman Cc: Abhishek Pandit-Subedi , Dmitry Baryshkov , =?utf-8?q?=C5=81ukasz_Barto?= =?utf-8?q?sik?= , Benson Leung , Jameson Thies , linux-usb@vger.kernel.org Subject: [PATCH v3 1/4] usb: typec: Add attribute file showing the supported USB modes of the port Date: Fri, 11 Oct 2024 15:43:59 +0300 Message-ID: <20241011124402.3306994-2-heikki.krogerus@linux.intel.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20241011124402.3306994-1-heikki.krogerus@linux.intel.com> References: <20241011124402.3306994-1-heikki.krogerus@linux.intel.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 This attribute file, named "usb_capability", will show the supported USB modes, which are USB 2.0, USB 3.2 and USB4. These modes are defined in the USB Type-C (R2.0) and USB Power Delivery (R3.0 V2.0) Specifications. Signed-off-by: Heikki Krogerus --- Documentation/ABI/testing/sysfs-class-typec | 13 ++++ drivers/usb/typec/class.c | 81 +++++++++++++++++++++ drivers/usb/typec/class.h | 1 + include/linux/usb/typec.h | 17 +++++ 4 files changed, 112 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-class-typec b/Documentation/ABI/testing/sysfs-class-typec index 281b995beb05..7c307f02d99e 100644 --- a/Documentation/ABI/testing/sysfs-class-typec +++ b/Documentation/ABI/testing/sysfs-class-typec @@ -149,6 +149,19 @@ Description: advertise to the partner. The currently used capabilities are in brackets. Selection happens by writing to the file. +What: /sys/class/typec//usb_capability +Date: May 2024 +Contact: Heikki Krogerus +Description: Lists the supported USB Modes. The default USB mode that is used + next time with the Enter_USB Message is in brackets. The default + mode can be changed by writing to the file when supported by the + driver. + + Valid values: + - usb2 (USB 2.0) + - usb3 (USB 3.2) + - usb4 (USB4) + USB Type-C partner devices (eg. /sys/class/typec/port0-partner/) What: /sys/class/typec/-partner/accessory_mode diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c index 9262fcd4144f..ea9ee47bb246 100644 --- a/drivers/usb/typec/class.c +++ b/drivers/usb/typec/class.c @@ -219,6 +219,13 @@ static ssize_t usb_power_delivery_revision_show(struct device *dev, char *buf); static DEVICE_ATTR_RO(usb_power_delivery_revision); +static const char * const usb_modes[] = { + [USB_MODE_NONE] = "none", + [USB_MODE_USB2] = "usb2", + [USB_MODE_USB3] = "usb3", + [USB_MODE_USB4] = "usb4" +}; + /* ------------------------------------------------------------------------- */ /* Alternate Modes */ @@ -1289,6 +1296,67 @@ EXPORT_SYMBOL_GPL(typec_unregister_cable); /* ------------------------------------------------------------------------- */ /* USB Type-C ports */ +/** + * typec_port_set_usb_mode - Set the operational USB mode for the port + * @port: USB Type-C port + * @mode: USB Mode (USB2, USB3 or USB4) + * + * @mode will be used with the next Enter_USB message. Existing connections are + * not affected. + */ +void typec_port_set_usb_mode(struct typec_port *port, enum usb_mode mode) +{ + port->usb_mode = mode; +} +EXPORT_SYMBOL_GPL(typec_port_set_usb_mode); + +static ssize_t +usb_capability_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + enum usb_mode mode = to_typec_port(dev)->usb_mode; + u8 cap = to_typec_port(dev)->cap->usb_capability; + int len = 0; + int i; + + for (i = USB_MODE_USB2; i < USB_MODE_USB4 + 1; i++) { + if (!(BIT(i - 1) & cap)) + continue; + + if (i == mode) + len += sysfs_emit_at(buf, len, "[%s] ", usb_modes[i]); + else + len += sysfs_emit_at(buf, len, "%s ", usb_modes[i]); + } + + buf[len - 1] = '\n'; + return len; +} + +static ssize_t +usb_capability_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t size) +{ + struct typec_port *port = to_typec_port(dev); + int ret = 0; + int mode; + + if (!port->ops || !port->ops->default_usb_mode_set) + return -EOPNOTSUPP; + + mode = sysfs_match_string(usb_modes, buf); + if (mode < 0) + return mode; + + ret = port->ops->default_usb_mode_set(port, mode); + if (ret) + return ret; + + port->usb_mode = mode; + + return size; +} +static DEVICE_ATTR_RW(usb_capability); + /** * typec_port_set_usb_power_delivery - Assign USB PD for port. * @port: USB Type-C port. @@ -1757,6 +1825,7 @@ static struct attribute *typec_attrs[] = { &dev_attr_vconn_source.attr, &dev_attr_port_type.attr, &dev_attr_orientation.attr, + &dev_attr_usb_capability.attr, NULL, }; @@ -1790,6 +1859,11 @@ static umode_t typec_attr_is_visible(struct kobject *kobj, if (port->cap->orientation_aware) return 0444; return 0; + } else if (attr == &dev_attr_usb_capability.attr) { + if (!port->cap->usb_capability) + return 0; + if (!port->ops || !port->ops->default_usb_mode_set) + return 0444; } return attr->mode; @@ -2428,6 +2502,13 @@ struct typec_port *typec_register_port(struct device *parent, port->con.attach = typec_partner_attach; port->con.deattach = typec_partner_deattach; + if (cap->usb_capability & USB_CAPABILITY_USB4) + port->usb_mode = USB_MODE_USB4; + else if (cap->usb_capability & USB_CAPABILITY_USB3) + port->usb_mode = USB_MODE_USB3; + else if (cap->usb_capability & USB_CAPABILITY_USB2) + port->usb_mode = USB_MODE_USB2; + device_initialize(&port->dev); port->dev.class = &typec_class; port->dev.parent = parent; diff --git a/drivers/usb/typec/class.h b/drivers/usb/typec/class.h index 7485cdb9dd20..85bc50aa54f7 100644 --- a/drivers/usb/typec/class.h +++ b/drivers/usb/typec/class.h @@ -55,6 +55,7 @@ struct typec_port { enum typec_role vconn_role; enum typec_pwr_opmode pwr_opmode; enum typec_port_type port_type; + enum usb_mode usb_mode; struct mutex port_type_lock; enum typec_orientation orientation; diff --git a/include/linux/usb/typec.h b/include/linux/usb/typec.h index 549275f8ac1b..f7edced5b10b 100644 --- a/include/linux/usb/typec.h +++ b/include/linux/usb/typec.h @@ -87,6 +87,17 @@ enum typec_orientation { TYPEC_ORIENTATION_REVERSE, }; +enum usb_mode { + USB_MODE_NONE, + USB_MODE_USB2, + USB_MODE_USB3, + USB_MODE_USB4 +}; + +#define USB_CAPABILITY_USB2 BIT(0) +#define USB_CAPABILITY_USB3 BIT(1) +#define USB_CAPABILITY_USB4 BIT(2) + /* * struct enter_usb_data - Enter_USB Message details * @eudo: Enter_USB Data Object @@ -240,6 +251,7 @@ struct typec_partner_desc { * @port_type_set: Set port type * @pd_get: Get available USB Power Delivery Capabilities. * @pd_set: Set USB Power Delivery Capabilities. + * @default_usb_mode_set: USB Mode to be used by default with Enter_USB Message */ struct typec_operations { int (*try_role)(struct typec_port *port, int role); @@ -250,6 +262,7 @@ struct typec_operations { enum typec_port_type type); struct usb_power_delivery **(*pd_get)(struct typec_port *port); int (*pd_set)(struct typec_port *port, struct usb_power_delivery *pd); + int (*default_usb_mode_set)(struct typec_port *port, enum usb_mode mode); }; enum usb_pd_svdm_ver { @@ -267,6 +280,7 @@ enum usb_pd_svdm_ver { * @svdm_version: USB PD Structured VDM version if supported * @prefer_role: Initial role preference (DRP ports). * @accessory: Supported Accessory Modes + * @usb_capability: Supported USB Modes * @fwnode: Optional fwnode of the port * @driver_data: Private pointer for driver specific info * @pd: Optional USB Power Delivery Support @@ -283,6 +297,7 @@ struct typec_capability { int prefer_role; enum typec_accessory accessory[TYPEC_MAX_ACCESSORY]; unsigned int orientation_aware:1; + u8 usb_capability; struct fwnode_handle *fwnode; void *driver_data; @@ -350,6 +365,8 @@ int typec_port_set_usb_power_delivery(struct typec_port *port, struct usb_power_ int typec_partner_set_usb_power_delivery(struct typec_partner *partner, struct usb_power_delivery *pd); +void typec_port_set_usb_mode(struct typec_port *port, enum usb_mode mode); + /** * struct typec_connector - Representation of Type-C port for external drivers * @attach: notification about device removal From patchwork Fri Oct 11 12:44:00 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heikki Krogerus X-Patchwork-Id: 835059 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E9E3121791C for ; Fri, 11 Oct 2024 12:44:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.12 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728650652; cv=none; b=XSL0gGROopwBfcjrXBR0eavdwE1v0Cx5k83KJWxhrW7TEdW2fmV0eITIFjvbyp93a8KnxAMOuE/gLHhbT+/8aAzcYfRcTgDvWDD2wo5+g0Jki8mqEBpUeU7eSkB+oMMgQiVzyyz32f7CbRy437xabQ4s73QmAYZLwFxPeulucts= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728650652; c=relaxed/simple; bh=3DLvslfPI+iMWLKZ103f9nELbX08bqMmOO+kVQ5VO40=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=nwGyTgX34mn0T5hcR7KUHbbhY1Nm/YkXW8ooPK4D1qxoe+lOHdpRCZj7yHTGhnECVGhWKSjb13zkIbk7uAJOCm86IOLMMumQRP7nddxstD8OmOmqzBY8HWCORGT70LnL2YQhUrI5A5wbNorD4l3mOfCFw1phU/B0D1rK+IFyVIY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=R6CW6Uf0; arc=none smtp.client-ip=192.198.163.12 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="R6CW6Uf0" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1728650651; x=1760186651; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=3DLvslfPI+iMWLKZ103f9nELbX08bqMmOO+kVQ5VO40=; b=R6CW6Uf0E0i22spBGyc2FSvFWz1Kl2lUB/TOj3JwPaSAq/lLpKwN+S7Y olTogvC+nAKKLrAo407RuM6ph101na1EowjhlY8MaToPVgdAaZME+U+nr 0yEcFLK0jz0KHlVEYHx4mPkxu8RR9vKNoeX/dLaJZowrR7GolBIu8YIwg m8Tawc2iY7Er41Rd8K28Lxh0oQtGxavp0IUYp0Cj6TBCU2dGBmuho6bKZ w2u2at2osrhH+i0HwTD+Ip4Tx4yiT+dgVqtEIb2USghPxDwllRDVgckPV Brxqv3qTI6EHAgj56M/Vix9NufC3pqChW2KOYVGBaPctVd7eaWxfe0n5d A==; X-CSE-ConnectionGUID: 0F+6fMShSd+LCAGivjiBHg== X-CSE-MsgGUID: EAhrORh2TvWvGD5rR0Hgzw== X-IronPort-AV: E=McAfee;i="6700,10204,11221"; a="31957704" X-IronPort-AV: E=Sophos;i="6.11,195,1725346800"; d="scan'208";a="31957704" Received: from orviesa008.jf.intel.com ([10.64.159.148]) by fmvoesa106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Oct 2024 05:44:10 -0700 X-CSE-ConnectionGUID: usyGrRUfSwiFqNmSgkYZ/A== X-CSE-MsgGUID: LApFIsojRMWn6cr/4AN44A== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.11,195,1725346800"; d="scan'208";a="77716162" Received: from black.fi.intel.com (HELO black.fi.intel.com.) ([10.237.72.28]) by orviesa008.jf.intel.com with ESMTP; 11 Oct 2024 05:44:08 -0700 From: Heikki Krogerus To: Greg Kroah-Hartman Cc: Abhishek Pandit-Subedi , Dmitry Baryshkov , =?utf-8?q?=C5=81ukasz_Barto?= =?utf-8?q?sik?= , Benson Leung , Jameson Thies , linux-usb@vger.kernel.org Subject: [PATCH v3 2/4] usb: typec: Add attribute file showing the USB Modes of the partner Date: Fri, 11 Oct 2024 15:44:00 +0300 Message-ID: <20241011124402.3306994-3-heikki.krogerus@linux.intel.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20241011124402.3306994-1-heikki.krogerus@linux.intel.com> References: <20241011124402.3306994-1-heikki.krogerus@linux.intel.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 This attribute file shows the supported USB modes (USB 2.0, USB 3.0 and USB4) of the partner, and the currently active mode. The active mode is determined primarily by checking the speed of the enumerated USB device. When USB Power Delivery is supported, the active USB mode should be always the mode that was used with the Enter_USB Message, regardless of the result of the USB enumeration. The port drivers can separately assign the mode with a dedicated API. If USB Power Delivery Identity is supplied for the partner device, the supported modes are extracted from it. Signed-off-by: Heikki Krogerus --- Documentation/ABI/testing/sysfs-class-typec | 14 +++ drivers/usb/typec/class.c | 123 +++++++++++++++++++- drivers/usb/typec/class.h | 2 + include/linux/usb/typec.h | 5 + 4 files changed, 140 insertions(+), 4 deletions(-) diff --git a/Documentation/ABI/testing/sysfs-class-typec b/Documentation/ABI/testing/sysfs-class-typec index 7c307f02d99e..a3afe04b2688 100644 --- a/Documentation/ABI/testing/sysfs-class-typec +++ b/Documentation/ABI/testing/sysfs-class-typec @@ -233,6 +233,20 @@ Description: directory exists, it will have an attribute file for every VDO in Discover Identity command result. +What: /sys/class/typec/-partner/usb_mode +Date: February 2024 +Contact: Heikki Krogerus +Description: The USB Modes that the partner device supports. The active mode + is displayed in brackets. The active USB mode can be changed by + writing to this file when the port driver is able to send Data + Reset Message to the partner. That requires USB Power Delivery + contract between the partner and the port. + + Valid values: + - usb2 (USB 2.0) + - usb3 (USB 3.2) + - usb4 (USB4) + USB Type-C cable devices (eg. /sys/class/typec/port0-cable/) Note: Electronically Marked Cables will have a device also for one cable plug diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c index ea9ee47bb246..a6fedafc9c86 100644 --- a/drivers/usb/typec/class.c +++ b/drivers/usb/typec/class.c @@ -618,6 +618,74 @@ EXPORT_SYMBOL_GPL(typec_unregister_altmode); /* ------------------------------------------------------------------------- */ /* Type-C Partners */ +/** + * typec_partner_set_usb_mode - Assign active USB Mode for the partner + * @partner: USB Type-C partner + * @mode: USB Mode (USB2, USB3 or USB4) + * + * The port drivers can use this function to assign the active USB Mode to + * @partner. The USB Mode can change for example due to Data Reset. + */ +void typec_partner_set_usb_mode(struct typec_partner *partner, enum usb_mode mode) +{ + if (!partner || partner->usb_mode == mode) + return; + + partner->usb_capability |= BIT(mode - 1); + partner->usb_mode = mode; + sysfs_notify(&partner->dev.kobj, NULL, "usb_mode"); +} +EXPORT_SYMBOL_GPL(typec_partner_set_usb_mode); + +static ssize_t +usb_mode_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct typec_partner *partner = to_typec_partner(dev); + int len = 0; + int i; + + for (i = USB_MODE_USB2; i < USB_MODE_USB4 + 1; i++) { + if (!(BIT(i - 1) & partner->usb_capability)) + continue; + + if (i == partner->usb_mode) + len += sysfs_emit_at(buf, len, "[%s] ", usb_modes[i]); + else + len += sysfs_emit_at(buf, len, "%s ", usb_modes[i]); + } + + buf[len - 1] = '\n'; + return len; +} + +static ssize_t usb_mode_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t size) +{ + struct typec_partner *partner = to_typec_partner(dev); + struct typec_port *port = to_typec_port(dev->parent); + int mode; + int ret; + + if (!port->ops || !port->ops->enter_usb_mode) + return -EOPNOTSUPP; + + mode = sysfs_match_string(usb_modes, buf); + if (mode < 0) + return mode; + + if (mode == partner->usb_mode) + return size; + + ret = port->ops->enter_usb_mode(port, mode); + if (ret) + return ret; + + typec_partner_set_usb_mode(partner, mode); + + return size; +} +static DEVICE_ATTR_RW(usb_mode); + static ssize_t accessory_mode_show(struct device *dev, struct device_attribute *attr, char *buf) @@ -664,6 +732,7 @@ static struct attribute *typec_partner_attrs[] = { &dev_attr_supports_usb_power_delivery.attr, &dev_attr_number_of_alternate_modes.attr, &dev_attr_type.attr, + &dev_attr_usb_mode.attr, &dev_attr_usb_power_delivery_revision.attr, NULL }; @@ -671,6 +740,14 @@ static struct attribute *typec_partner_attrs[] = { static umode_t typec_partner_attr_is_visible(struct kobject *kobj, struct attribute *attr, int n) { struct typec_partner *partner = to_typec_partner(kobj_to_dev(kobj)); + struct typec_port *port = to_typec_port(partner->dev.parent); + + if (attr == &dev_attr_usb_mode.attr) { + if (!partner->usb_capability) + return 0; + if (!port->ops || !port->ops->enter_usb_mode) + return 0444; + } if (attr == &dev_attr_number_of_alternate_modes.attr) { if (partner->num_altmodes < 0) @@ -744,10 +821,33 @@ static void typec_partner_unlink_device(struct typec_partner *partner, struct de */ int typec_partner_set_identity(struct typec_partner *partner) { - if (!partner->identity) + u8 usb_capability = partner->usb_capability; + struct device *dev = &partner->dev; + struct usb_pd_identity *id; + + id = get_pd_identity(dev); + if (!id) return -EINVAL; - typec_report_identity(&partner->dev); + if (to_typec_port(dev->parent)->data_role == TYPEC_HOST) { + u32 devcap = PD_VDO_UFP_DEVCAP(id->vdo[0]); + + if (devcap & (DEV_USB2_CAPABLE | DEV_USB2_BILLBOARD)) + usb_capability |= USB_CAPABILITY_USB2; + if (devcap & DEV_USB3_CAPABLE) + usb_capability |= USB_CAPABILITY_USB3; + if (devcap & DEV_USB4_CAPABLE) + usb_capability |= USB_CAPABILITY_USB4; + } else { + usb_capability = PD_VDO_DFP_HOSTCAP(id->vdo[0]); + } + + if (partner->usb_capability != usb_capability) { + partner->usb_capability = usb_capability; + sysfs_notify(&dev->kobj, NULL, "usb_mode"); + } + + typec_report_identity(dev); return 0; } EXPORT_SYMBOL_GPL(typec_partner_set_identity); @@ -917,6 +1017,7 @@ struct typec_partner *typec_register_partner(struct typec_port *port, partner->usb_pd = desc->usb_pd; partner->accessory = desc->accessory; partner->num_altmodes = -1; + partner->usb_capability = desc->usb_capability; partner->pd_revision = desc->pd_revision; partner->svdm_version = port->cap->svdm_version; partner->attach = desc->attach; @@ -936,6 +1037,15 @@ struct typec_partner *typec_register_partner(struct typec_port *port, partner->dev.type = &typec_partner_dev_type; dev_set_name(&partner->dev, "%s-partner", dev_name(&port->dev)); + if (port->usb2_dev) { + partner->usb_capability |= USB_CAPABILITY_USB2; + partner->usb_mode = USB_MODE_USB2; + } + if (port->usb3_dev) { + partner->usb_capability |= USB_CAPABILITY_USB2 | USB_CAPABILITY_USB3; + partner->usb_mode = USB_MODE_USB3; + } + ret = device_register(&partner->dev); if (ret) { dev_err(&port->dev, "failed to register partner (%d)\n", ret); @@ -1935,13 +2045,18 @@ static void typec_partner_attach(struct typec_connector *con, struct device *dev struct typec_port *port = container_of(con, struct typec_port, con); struct typec_partner *partner = typec_get_partner(port); struct usb_device *udev = to_usb_device(dev); + enum usb_mode usb_mode; - if (udev->speed < USB_SPEED_SUPER) + if (udev->speed < USB_SPEED_SUPER) { + usb_mode = USB_MODE_USB2; port->usb2_dev = dev; - else + } else { + usb_mode = USB_MODE_USB3; port->usb3_dev = dev; + } if (partner) { + typec_partner_set_usb_mode(partner, usb_mode); typec_partner_link_device(partner, dev); put_device(&partner->dev); } diff --git a/drivers/usb/typec/class.h b/drivers/usb/typec/class.h index 85bc50aa54f7..b3076a24ad2e 100644 --- a/drivers/usb/typec/class.h +++ b/drivers/usb/typec/class.h @@ -35,6 +35,8 @@ struct typec_partner { int num_altmodes; u16 pd_revision; /* 0300H = "3.0" */ enum usb_pd_svdm_ver svdm_version; + enum usb_mode usb_mode; + u8 usb_capability; struct usb_power_delivery *pd; diff --git a/include/linux/usb/typec.h b/include/linux/usb/typec.h index f7edced5b10b..d616b8807000 100644 --- a/include/linux/usb/typec.h +++ b/include/linux/usb/typec.h @@ -220,6 +220,7 @@ struct typec_cable_desc { * @accessory: Audio, Debug or none. * @identity: Discover Identity command data * @pd_revision: USB Power Delivery Specification Revision if supported + * @usb_capability: Supported USB Modes * @attach: Notification about attached USB device * @deattach: Notification about removed USB device * @@ -237,6 +238,7 @@ struct typec_partner_desc { enum typec_accessory accessory; struct usb_pd_identity *identity; u16 pd_revision; /* 0300H = "3.0" */ + u8 usb_capability; void (*attach)(struct typec_partner *partner, struct device *dev); void (*deattach)(struct typec_partner *partner, struct device *dev); @@ -252,6 +254,7 @@ struct typec_partner_desc { * @pd_get: Get available USB Power Delivery Capabilities. * @pd_set: Set USB Power Delivery Capabilities. * @default_usb_mode_set: USB Mode to be used by default with Enter_USB Message + * @enter_usb_mode: Change the active USB Mode */ struct typec_operations { int (*try_role)(struct typec_port *port, int role); @@ -263,6 +266,7 @@ struct typec_operations { struct usb_power_delivery **(*pd_get)(struct typec_port *port); int (*pd_set)(struct typec_port *port, struct usb_power_delivery *pd); int (*default_usb_mode_set)(struct typec_port *port, enum usb_mode mode); + int (*enter_usb_mode)(struct typec_port *port, enum usb_mode mode); }; enum usb_pd_svdm_ver { @@ -365,6 +369,7 @@ int typec_port_set_usb_power_delivery(struct typec_port *port, struct usb_power_ int typec_partner_set_usb_power_delivery(struct typec_partner *partner, struct usb_power_delivery *pd); +void typec_partner_set_usb_mode(struct typec_partner *partner, enum usb_mode usb_mode); void typec_port_set_usb_mode(struct typec_port *port, enum usb_mode mode); /** From patchwork Fri Oct 11 12:44:01 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heikki Krogerus X-Patchwork-Id: 834861 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6055F218588 for ; Fri, 11 Oct 2024 12:44:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.12 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728650654; cv=none; b=RiT2x6glflIsHPAMhcQhgiXRMDsVOkULsZC1Fxf9jgw6iXkKC9mkK/gvVG0i3T/lHPrBFdsXBPTSGVJnflTZ8jMwKqxWKUseQ/j/ncVuKSmdnUI3BC/zw0LGUP0OgNKk6QSuKKtAq0Nj8o/rTzOhRy52zu13X8XYU5rZICMfAhg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728650654; c=relaxed/simple; bh=85QACXgzNQ6JGHtoS1i4jJwSrOKiUFUTIGKAnJ+5yKA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=lC4VCb+cU2MR/6hhAi4eRdFaxD+ObYErrU+aeZFJz5vosnKZJhPg2FWP1xppvEgaFWfW29ly9uDMM5FSb9upum8Gt9AzYXfOvbrTOhifgrbW2thC1nVtZPOsZhJ1ZY8Neoz/4usVL3o7+C/nj5HpGEiBe6Fv5oulr8rk4iTOvUg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=i4tYe1iD; arc=none smtp.client-ip=192.198.163.12 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="i4tYe1iD" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1728650653; x=1760186653; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=85QACXgzNQ6JGHtoS1i4jJwSrOKiUFUTIGKAnJ+5yKA=; b=i4tYe1iDjlqN7mlviSqNtSnEOQIugOGpWVavtKilk6Qb3y9D6AZgmWPL HHAA0wntMCvrhk1Pmh9WDoxL0lO4nPA3vqzkXvs7+JQCVYw8205+dgHXm xkz4IvoAnxGlkPAxglvNyvM0eMlx7P6OhNTt1KJ+wmZnoaApZtB5Trpjg vCYvAe/afELSdQe8M1YZCMLqUHPo2A1Ocntyre9cX6uKyWpPx7SUR9xP0 oasECTsLb1xW74G8S4nM+OTH6eAKa+mpkHIqivnQJMarK2lo3EitO6927 bnsh3vfYEBygsIOsXZfj3bBn7G8z09sLvaYTEHe6f6C4iR6efrc5aZWGJ A==; X-CSE-ConnectionGUID: iD5gnHsiSX6IkGmKOlCeLQ== X-CSE-MsgGUID: vfLyg2pWS7iPDyKFF6WVZA== X-IronPort-AV: E=McAfee;i="6700,10204,11221"; a="31957712" X-IronPort-AV: E=Sophos;i="6.11,195,1725346800"; d="scan'208";a="31957712" Received: from orviesa008.jf.intel.com ([10.64.159.148]) by fmvoesa106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Oct 2024 05:44:13 -0700 X-CSE-ConnectionGUID: hazRoEoNT6ylb9xpX+Ce+g== X-CSE-MsgGUID: abzGXKWGTL6o42UI7eksGQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.11,195,1725346800"; d="scan'208";a="77716177" Received: from black.fi.intel.com (HELO black.fi.intel.com.) ([10.237.72.28]) by orviesa008.jf.intel.com with ESMTP; 11 Oct 2024 05:44:10 -0700 From: Heikki Krogerus To: Greg Kroah-Hartman Cc: Abhishek Pandit-Subedi , Dmitry Baryshkov , =?utf-8?q?=C5=81ukasz_Barto?= =?utf-8?q?sik?= , Benson Leung , Jameson Thies , linux-usb@vger.kernel.org Subject: [PATCH v3 3/4] usb: typec: ucsi: Supply the USB capabilities to the ports Date: Fri, 11 Oct 2024 15:44:01 +0300 Message-ID: <20241011124402.3306994-4-heikki.krogerus@linux.intel.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20241011124402.3306994-1-heikki.krogerus@linux.intel.com> References: <20241011124402.3306994-1-heikki.krogerus@linux.intel.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The USB capabilities can be extracted from the response to the Get Connector Capability command. USB2 and USB3 support can be checked from the Operation Mode field, and USB4 support from the Extended Operation Mode field. Signed-off-by: Heikki Krogerus --- drivers/usb/typec/ucsi/ucsi.c | 7 +++++++ drivers/usb/typec/ucsi/ucsi.h | 8 ++++++++ 2 files changed, 15 insertions(+) diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c index e0f3925e401b..13c739d334c4 100644 --- a/drivers/usb/typec/ucsi/ucsi.c +++ b/drivers/usb/typec/ucsi/ucsi.c @@ -1588,6 +1588,13 @@ static int ucsi_register_port(struct ucsi *ucsi, struct ucsi_connector *con) if (con->cap.op_mode & UCSI_CONCAP_OPMODE_DEBUG_ACCESSORY) *accessory = TYPEC_ACCESSORY_DEBUG; + if (UCSI_CONCAP_USB2_SUPPORT(con)) + cap->usb_capability |= USB_CAPABILITY_USB2; + if (UCSI_CONCAP_USB3_SUPPORT(con)) + cap->usb_capability |= USB_CAPABILITY_USB3; + if (UCSI_CONCAP_USB4_SUPPORT(con)) + cap->usb_capability |= USB_CAPABILITY_USB4; + cap->driver_data = con; cap->ops = &ucsi_ops; diff --git a/drivers/usb/typec/ucsi/ucsi.h b/drivers/usb/typec/ucsi/ucsi.h index 1cf5aad4c23a..a1f4b9b568c8 100644 --- a/drivers/usb/typec/ucsi/ucsi.h +++ b/drivers/usb/typec/ucsi/ucsi.h @@ -286,6 +286,14 @@ struct ucsi_connector_capability { UCSI_SPEC_REVISION_TO_BCD(UCSI_CONCAP_FLAG_PARTNER_PD_MAJOR_REV(_f_)) } __packed; +#define UCSI_CONCAP_USB2_SUPPORT(_con_) ((_con_)->cap.op_mode & UCSI_CONCAP_OPMODE_USB2) +#define UCSI_CONCAP_USB3_SUPPORT(_con_) ((_con_)->cap.op_mode & UCSI_CONCAP_OPMODE_USB3) +#define UCSI_CONCAP_USB4_SUPPORT(_con_) \ + ((_con_)->ucsi->version >= UCSI_VERSION_2_0 && \ + ((_con_)->cap.flags & (UCSI_CONCAP_EX_OP_MODE_USB4_GEN2 | \ + UCSI_CONCAP_EX_OP_MODE_USB4_GEN3 | \ + UCSI_CONCAP_EX_OP_MODE_USB4_GEN4))) + struct ucsi_altmode { u16 svid; u32 mid; From patchwork Fri Oct 11 12:44:02 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heikki Krogerus X-Patchwork-Id: 835058 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 23781218588 for ; Fri, 11 Oct 2024 12:44:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.12 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728650659; cv=none; b=pyLkeyGSFhqcSVnNfbhTTyke3B1zqd61TUK0dG5nhH0Ayb0nOkn5yoL3ImwgTxlxPxgSmt+NEBSTB+53z09fywP/QKO6rG55KiWvMfsMd9KcdLGOVSFuU9nlQ10Lx10DUpjDwnZsSWP3juVUzjDnQO/PJGw+8YymV7Tkf7F4/M4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728650659; c=relaxed/simple; bh=+oqTaLNbD0nIAK3DWOlcr9M1G8NAByjPH9PR2kehoSA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=nojkhAIJ+LzhaygAiuXbrPg5cBoPt5Iz9helcAfcJKaMJ24PT5HVA/8eT/4+JeShXUh8ZLm3r6VsXK7irZ83LSN/Lkgflpghmcr70JKdew0aSfzxwxhdzvOYSAlg4jFM7BIEIXahpL9ze9aim2bbltUeSGWYjOBlndO9E/hTZT4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=hnL8YcyH; arc=none smtp.client-ip=192.198.163.12 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="hnL8YcyH" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1728650657; x=1760186657; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=+oqTaLNbD0nIAK3DWOlcr9M1G8NAByjPH9PR2kehoSA=; b=hnL8YcyH2mRXqhUkYmWXBgglFIfAlM9O9oPBynlVpbXIb624ERgE+11S 4d4tIAI3PPqiG0FhiBalKKkQHAgNe8qWmpDwy7w1EVb+CKmCVqkH6uiN+ 8QOc2YzKuYML6RonfkPiWuIPWALAwl7ryRHNIk7JEYcAP47/MCHNbdDdM SnCpzLyBBh3efgbp5vPK9SU3ldmo1iQUfiO72TqB45OwKWEZJG3y8tRA8 V95Zsm3PgBRmL8vB3xlEhyOkotSxYfW04SMuPRg1mOIUGVsw0PnwK+7jT 6f94nRE+Ov5U1vq6dfs7TQLZG4g/2jlTEDjH9yDpg1VHy+CBPsZj+d+WP w==; X-CSE-ConnectionGUID: Tdf7N5kUQS6/BwQLg5LgJQ== X-CSE-MsgGUID: XF4BCsUlRcamMguueNEJhw== X-IronPort-AV: E=McAfee;i="6700,10204,11221"; a="31957718" X-IronPort-AV: E=Sophos;i="6.11,195,1725346800"; d="scan'208";a="31957718" Received: from orviesa008.jf.intel.com ([10.64.159.148]) by fmvoesa106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Oct 2024 05:44:15 -0700 X-CSE-ConnectionGUID: L5gSKwwyQ5umHTnxdM+uPg== X-CSE-MsgGUID: QGH0FIFrRO27FQfMYkzDpw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.11,195,1725346800"; d="scan'208";a="77716194" Received: from black.fi.intel.com (HELO black.fi.intel.com.) ([10.237.72.28]) by orviesa008.jf.intel.com with ESMTP; 11 Oct 2024 05:44:12 -0700 From: Heikki Krogerus To: Greg Kroah-Hartman Cc: Abhishek Pandit-Subedi , Dmitry Baryshkov , =?utf-8?q?=C5=81ukasz_Barto?= =?utf-8?q?sik?= , Benson Leung , Jameson Thies , linux-usb@vger.kernel.org Subject: [PATCH v3 4/4] usb: typec: ucsi: Add support for the partner USB Modes Date: Fri, 11 Oct 2024 15:44:02 +0300 Message-ID: <20241011124402.3306994-5-heikki.krogerus@linux.intel.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20241011124402.3306994-1-heikki.krogerus@linux.intel.com> References: <20241011124402.3306994-1-heikki.krogerus@linux.intel.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 UCSI does not share the contents of the Enter_USB Message that was used, so the active mode still has to be always determined from the enumerated USB device. However, after UCSI v2.0 it is possible to check separately is USB4 the active mode. So with USB2 and USB3 the mode is always determined from the result of the USB enumeration, and when USB4 USB Mode is active, UCSI driver can assign the mode directly. Signed-off-by: Heikki Krogerus --- drivers/usb/typec/ucsi/ucsi.c | 8 ++++++++ drivers/usb/typec/ucsi/ucsi.h | 2 ++ 2 files changed, 10 insertions(+) diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c index 13c739d334c4..804f7f9b35ea 100644 --- a/drivers/usb/typec/ucsi/ucsi.c +++ b/drivers/usb/typec/ucsi/ucsi.c @@ -1057,6 +1057,14 @@ static int ucsi_register_partner(struct ucsi_connector *con) con->partner = partner; + if (con->ucsi->version >= UCSI_VERSION_3_0) + if (UCSI_CONSTAT_PARTNER_FLAGS(con->status.flags) & + UCSI_CONSTAT_PARTNER_FLAG_USB4_GEN4) + typec_partner_set_usb_mode(partner, USB_MODE_USB4); + if (con->ucsi->version >= UCSI_VERSION_2_0) + if (UCSI_CONSTAT_PARTNER_FLAGS(con->status.flags) & + UCSI_CONSTAT_PARTNER_FLAG_USB4_GEN3) + typec_partner_set_usb_mode(partner, USB_MODE_USB4); return 0; } diff --git a/drivers/usb/typec/ucsi/ucsi.h b/drivers/usb/typec/ucsi/ucsi.h index a1f4b9b568c8..d850073e8d0a 100644 --- a/drivers/usb/typec/ucsi/ucsi.h +++ b/drivers/usb/typec/ucsi/ucsi.h @@ -346,6 +346,8 @@ struct ucsi_connector_status { #define UCSI_CONSTAT_PARTNER_FLAGS(_f_) (((_f_) & GENMASK(12, 5)) >> 5) #define UCSI_CONSTAT_PARTNER_FLAG_USB 1 #define UCSI_CONSTAT_PARTNER_FLAG_ALT_MODE 2 +#define UCSI_CONSTAT_PARTNER_FLAG_USB4_GEN3 4 +#define UCSI_CONSTAT_PARTNER_FLAG_USB4_GEN4 8 #define UCSI_CONSTAT_PARTNER_TYPE(_f_) (((_f_) & GENMASK(15, 13)) >> 13) #define UCSI_CONSTAT_PARTNER_TYPE_DFP 1 #define UCSI_CONSTAT_PARTNER_TYPE_UFP 2