From nobody Sun Feb 8 10:50:00 2026 Received: from mail-yw1-f202.google.com (mail-yw1-f202.google.com [209.85.128.202]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2C8356D535 for ; Thu, 29 Feb 2024 23:27:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.202 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709249268; cv=none; b=kbbDD02xnr9AJbSt5cW7rziTLWPKUd35LDWveDfH6GphmgUd1XrONGq5yVNHTYjk/+QK2SdcZXegk6gk/JawSDBXSNhUHr9p1tnCwZW9jExNcQa5vvRrG6fxzGoK5c2jWlOrONbBCH+y9HgB6JQwJkjGlUwfCUr7nAGMxPJ6Wsw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709249268; c=relaxed/simple; bh=7tJEoT7UeieYnDrUIelxhTjT/DTW8yYe3f7+9yRHQ0g=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=p5VqksDK+SJyIkDm6aqdcKQlNk1HCktBbQOojA3eI04PkIDlWJpIyKc6JYsRZrHk5NrPx3RhXu7/8db1BoJQ5h/NNkjC9qgQg6CL0MYkj8GuxSREJOa+cGaBDsyfUoE+ywxbJujo0a/HEQgmZyaeXYUHUpMqQzsam0R8bT/To5o= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--jthies.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=UstDicte; arc=none smtp.client-ip=209.85.128.202 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--jthies.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="UstDicte" Received: by mail-yw1-f202.google.com with SMTP id 00721157ae682-60804b369c7so18938537b3.2 for ; Thu, 29 Feb 2024 15:27:45 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1709249265; x=1709854065; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=E3VOyu5h5VNnqIC5C1wAkPY2R8kjBMsntg/JOJOAxJU=; b=UstDicteCTjBperi9tOyIrGuhf+jdUGHooZE4z8lG7gi+AlyqryVfmf/V1PebCg/pT LjKSmniNwekt0cPh4XfoLR4peuAF3eMClSGY2kWZdZeDnphUzDdHcHvgNMKunrbzzpCb evt7rwZonGmFw+vYINQMPLB4ahdxKEO9iA8NePH574wkJa6bJRlr9hV58ZqfZXOWA0bw yvuETpmvJ6gH3X2FOD3ga/pq4mub+thLMLt0H7pXX6OXGfao6ipOEVIfmZUV8hJMPyf7 12DcPyuTSarVJJlEBY3CQw/sSjMLKmBtK0Lt8DaZwcvpMd3F1xPQ7xjASyuqbOjeHjUb OJ3Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1709249265; x=1709854065; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=E3VOyu5h5VNnqIC5C1wAkPY2R8kjBMsntg/JOJOAxJU=; b=ljH9cZrqfDwdYPedQh9MtaIPI8RgR8bgPLGVGjCU+Cr1u/dQ4rwn6AofuXj3mQlmwj wwPWI3gWpcFdrqQ0D1Wnzm9ShQ4cIOmnnvSJfSJ1WWSBBWxH+WUMYQAoRwi9x79lSSzh 7vnnxluO+HscbtcSpx3rb2UzECfe7mt4ZGaz+qHG/o/4UQkL02GiPOWZIZL3GG8GJ81y F4rVLz7Z/CYBEzQBOAuFWsI3ySTHxfjiDq7RAeJH7h+qomCMdQWEHOwWBqfrPyj/jNv4 pesL8q2NsMiyN04XJYssgk3EGLF7xyJjabXZRI8OtjWp8femNyhy0X73jdb65G0nIjfm 8b8w== X-Forwarded-Encrypted: i=1; AJvYcCXgqbJEJ28Ea1I02YNlqOFsQASOjaIF12tb/jCrQIzv7hIdzF7nj/KMrVzck9qu3muRF99OrLhknY4ylYEfv7E4NrqQ9VPOYr+aw2Jd X-Gm-Message-State: AOJu0Yzd4AvIA55ne4QLtVs1Ta6+pGSn8xWfcStrwIdRIY1cGG3TmH8c o1PUmHMbuVRjQDZBPJCwk1K8Nm0ZeFIeTBIysSD95nZpohJ7pTFkUF92mxZ58lZp7fnhSlXFABC tNA== X-Google-Smtp-Source: AGHT+IHvyejkGgypClXhg50bB1VZvyXaC2u7Vf4QdGi/7EhCSBdXhsaVPLCfGNLPt1UrGRRNNIIWY0xW7aI= X-Received: from jthies.c.googlers.com ([fda3:e722:ac3:cc00:20:ed76:c0a8:23db]) (user=jthies job=sendgmr) by 2002:a05:690c:b15:b0:608:e4fc:aada with SMTP id cj21-20020a05690c0b1500b00608e4fcaadamr124ywb.8.1709249265253; Thu, 29 Feb 2024 15:27:45 -0800 (PST) Date: Thu, 29 Feb 2024 23:26:22 +0000 In-Reply-To: <20240229232625.3944115-1-jthies@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20240229232625.3944115-1-jthies@google.com> X-Mailer: git-send-email 2.44.0.rc1.240.g4c46232300-goog Message-ID: <20240229232625.3944115-2-jthies@google.com> Subject: [PATCH v3 1/4] usb: typec: ucsi: Clean up UCSI_CABLE_PROP macros From: Jameson Thies To: heikki.krogerus@linux.intel.com, linux-usb@vger.kernel.org Cc: jthies@google.com, pmalani@chromium.org, bleung@google.com, abhishekpandit@chromium.org, andersson@kernel.org, dmitry.baryshkov@linaro.org, fabrice.gasnier@foss.st.com, gregkh@linuxfoundation.org, hdegoede@redhat.com, neil.armstrong@linaro.org, rajaram.regupathy@intel.com, saranya.gopal@intel.com, linux-kernel@vger.kernel.org, stable@vger.kernel.org, Benson Leung Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Clean up UCSI_CABLE_PROP macros by fixing a bitmask shifting error for plug type and updating the modal support macro for consistent naming. Fixes: 3cf657f07918 ("usb: typec: ucsi: Remove all bit-fields") Cc: stable@vger.kernel.org Reviewed-by: Benson Leung Reviewed-by: Prashant Malani Reviewed-by: Dmitry Baryshkov Signed-off-by: Jameson Thies --- Changes in v3: - Fixed CC stable. Changes in v2: - Tested on usb-testing branch merged with chromeOS 6.8-rc2 kernel. drivers/usb/typec/ucsi/ucsi.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/typec/ucsi/ucsi.h b/drivers/usb/typec/ucsi/ucsi.h index 7e35ffbe0a6f2..469a2baf472e4 100644 --- a/drivers/usb/typec/ucsi/ucsi.h +++ b/drivers/usb/typec/ucsi/ucsi.h @@ -259,12 +259,12 @@ struct ucsi_cable_property { #define UCSI_CABLE_PROP_FLAG_VBUS_IN_CABLE BIT(0) #define UCSI_CABLE_PROP_FLAG_ACTIVE_CABLE BIT(1) #define UCSI_CABLE_PROP_FLAG_DIRECTIONALITY BIT(2) -#define UCSI_CABLE_PROP_FLAG_PLUG_TYPE(_f_) ((_f_) & GENMASK(3, 0)) +#define UCSI_CABLE_PROP_FLAG_PLUG_TYPE(_f_) (((_f_) & GENMASK(4, 3)) >> 3) #define UCSI_CABLE_PROPERTY_PLUG_TYPE_A 0 #define UCSI_CABLE_PROPERTY_PLUG_TYPE_B 1 #define UCSI_CABLE_PROPERTY_PLUG_TYPE_C 2 #define UCSI_CABLE_PROPERTY_PLUG_OTHER 3 -#define UCSI_CABLE_PROP_MODE_SUPPORT BIT(5) +#define UCSI_CABLE_PROP_FLAG_MODE_SUPPORT BIT(5) u8 latency; } __packed; =20 --=20 2.44.0.rc1.240.g4c46232300-goog From nobody Sun Feb 8 10:50:00 2026 Received: from mail-yw1-f201.google.com (mail-yw1-f201.google.com [209.85.128.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2E2A813E7C2 for ; 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Thu, 29 Feb 2024 15:27:56 -0800 (PST) Date: Thu, 29 Feb 2024 23:26:23 +0000 In-Reply-To: <20240229232625.3944115-1-jthies@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20240229232625.3944115-1-jthies@google.com> X-Mailer: git-send-email 2.44.0.rc1.240.g4c46232300-goog Message-ID: <20240229232625.3944115-3-jthies@google.com> Subject: [PATCH v3 2/4] usb: typec: ucsi: Register cables based on GET_CABLE_PROPERTY From: Jameson Thies To: heikki.krogerus@linux.intel.com, linux-usb@vger.kernel.org Cc: jthies@google.com, pmalani@chromium.org, bleung@google.com, abhishekpandit@chromium.org, andersson@kernel.org, dmitry.baryshkov@linaro.org, fabrice.gasnier@foss.st.com, gregkh@linuxfoundation.org, hdegoede@redhat.com, neil.armstrong@linaro.org, rajaram.regupathy@intel.com, saranya.gopal@intel.com, linux-kernel@vger.kernel.org, Benson Leung Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Register cables with the Type-C Connector Class in the UCSI driver based on the PPM response to GET_CABLE_PROPERTY. Registered cable properties include plug type, cable type and major revision. Reviewed-by: Benson Leung Reviewed-by: Prashant Malani Reviewed-by: Dmitry Baryshkov Reviewed-by: Heikki Krogerus Signed-off-by: Jameson Thies --- Expected cable properties populate the USB Type-C connector class sysfs paths: nospike-rev4 /sys/class/typec # ls port0-cable device identity plug_type port0-plug0 power subsystem type uevent usb_power_delivery_revision Changes in v3: - None. Changes in v2: - Shortened lines to within 80 characters. - Tested on usb-testing branch merged with chromeOS 6.8-rc2 kernel. drivers/usb/typec/ucsi/ucsi.c | 73 +++++++++++++++++++++++++++++++++++ drivers/usb/typec/ucsi/ucsi.h | 5 +++ 2 files changed, 78 insertions(+) diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c index ae105383e69e7..7c84687b5d1a3 100644 --- a/drivers/usb/typec/ucsi/ucsi.c +++ b/drivers/usb/typec/ucsi/ucsi.c @@ -734,6 +734,52 @@ static void ucsi_unregister_partner_pdos(struct ucsi_c= onnector *con) con->partner_pd =3D NULL; } =20 +static int ucsi_register_cable(struct ucsi_connector *con) +{ + struct typec_cable *cable; + struct typec_cable_desc desc =3D {}; + + switch (UCSI_CABLE_PROP_FLAG_PLUG_TYPE(con->cable_prop.flags)) { + case UCSI_CABLE_PROPERTY_PLUG_TYPE_A: + desc.type =3D USB_PLUG_TYPE_A; + break; + case UCSI_CABLE_PROPERTY_PLUG_TYPE_B: + desc.type =3D USB_PLUG_TYPE_B; + break; + case UCSI_CABLE_PROPERTY_PLUG_TYPE_C: + desc.type =3D USB_PLUG_TYPE_C; + break; + default: + desc.type =3D USB_PLUG_NONE; + break; + } + + desc.active =3D !!(UCSI_CABLE_PROP_FLAG_ACTIVE_CABLE & + con->cable_prop.flags); + desc.pd_revision =3D UCSI_CABLE_PROP_FLAG_PD_MAJOR_REV_AS_BCD( + con->cable_prop.flags); + + cable =3D typec_register_cable(con->port, &desc); + if (IS_ERR(cable)) { + dev_err(con->ucsi->dev, + "con%d: failed to register cable (%ld)\n", con->num, + PTR_ERR(cable)); + return PTR_ERR(cable); + } + + con->cable =3D cable; + return 0; +} + +static void ucsi_unregister_cable(struct ucsi_connector *con) +{ + if (!con->cable) + return; + + typec_unregister_cable(con->cable); + con->cable =3D NULL; +} + static void ucsi_pwr_opmode_change(struct ucsi_connector *con) { switch (UCSI_CONSTAT_PWR_OPMODE(con->status.flags)) { @@ -807,6 +853,7 @@ static void ucsi_unregister_partner(struct ucsi_connect= or *con) typec_partner_set_usb_power_delivery(con->partner, NULL); ucsi_unregister_partner_pdos(con); ucsi_unregister_altmodes(con, UCSI_RECIPIENT_SOP); + ucsi_unregister_cable(con); typec_unregister_partner(con->partner); con->partner =3D NULL; } @@ -907,6 +954,30 @@ static int ucsi_check_connection(struct ucsi_connector= *con) return 0; } =20 +static int ucsi_check_cable(struct ucsi_connector *con) +{ + u64 command; + int ret; + + if (con->cable) + return 0; + + command =3D UCSI_GET_CABLE_PROPERTY | UCSI_CONNECTOR_NUMBER(con->num); + ret =3D ucsi_send_command(con->ucsi, command, &con->cable_prop, + sizeof(con->cable_prop)); + if (ret < 0) { + dev_err(con->ucsi->dev, "GET_CABLE_PROPERTY failed (%d)\n", + ret); + return ret; + } + + ret =3D ucsi_register_cable(con); + if (ret < 0) + return ret; + + return 0; +} + static void ucsi_handle_connector_change(struct work_struct *work) { struct ucsi_connector *con =3D container_of(work, struct ucsi_connector, @@ -948,6 +1019,7 @@ static void ucsi_handle_connector_change(struct work_s= truct *work) ucsi_register_partner(con); ucsi_partner_task(con, ucsi_check_connection, 1, HZ); ucsi_partner_task(con, ucsi_check_connector_capability, 1, HZ); + ucsi_partner_task(con, ucsi_check_cable, 1, HZ); =20 if (UCSI_CONSTAT_PWR_OPMODE(con->status.flags) =3D=3D UCSI_CONSTAT_PWR_OPMODE_PD) @@ -1346,6 +1418,7 @@ static int ucsi_register_port(struct ucsi *ucsi, stru= ct ucsi_connector *con) ucsi_register_partner(con); ucsi_pwr_opmode_change(con); ucsi_port_psy_changed(con); + ucsi_check_cable(con); } =20 /* Only notify USB controller if partner supports USB data */ diff --git a/drivers/usb/typec/ucsi/ucsi.h b/drivers/usb/typec/ucsi/ucsi.h index 469a2baf472e4..f0aabef0b7c64 100644 --- a/drivers/usb/typec/ucsi/ucsi.h +++ b/drivers/usb/typec/ucsi/ucsi.h @@ -265,6 +265,9 @@ struct ucsi_cable_property { #define UCSI_CABLE_PROPERTY_PLUG_TYPE_C 2 #define UCSI_CABLE_PROPERTY_PLUG_OTHER 3 #define UCSI_CABLE_PROP_FLAG_MODE_SUPPORT BIT(5) +#define UCSI_CABLE_PROP_FLAG_PD_MAJOR_REV(_f_) (((_f_) & GENMASK(7, 6)) >>= 6) +#define UCSI_CABLE_PROP_FLAG_PD_MAJOR_REV_AS_BCD(_f_) \ + UCSI_SPEC_REVISION_TO_BCD(UCSI_CABLE_PROP_FLAG_PD_MAJOR_REV(_f_)) u8 latency; 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Thu, 29 Feb 2024 15:28:06 -0800 (PST) Date: Thu, 29 Feb 2024 23:26:24 +0000 In-Reply-To: <20240229232625.3944115-1-jthies@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20240229232625.3944115-1-jthies@google.com> X-Mailer: git-send-email 2.44.0.rc1.240.g4c46232300-goog Message-ID: <20240229232625.3944115-4-jthies@google.com> Subject: [PATCH v3 3/4] usb: typec: ucsi: Register SOP/SOP' Discover Identity Responses From: Jameson Thies To: heikki.krogerus@linux.intel.com, linux-usb@vger.kernel.org Cc: jthies@google.com, pmalani@chromium.org, bleung@google.com, abhishekpandit@chromium.org, andersson@kernel.org, dmitry.baryshkov@linaro.org, fabrice.gasnier@foss.st.com, gregkh@linuxfoundation.org, hdegoede@redhat.com, neil.armstrong@linaro.org, rajaram.regupathy@intel.com, saranya.gopal@intel.com, linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Register SOP and SOP' Discover Identity responses with the USB Type-C Connector Class as partner and cable identities, respectively. Discover Identity responses are requested from the PPM using the GET_PD_MESSAGE UCSI command. Signed-off-by: Jameson Thies Reviewed-by: Benson Leung --- GET_PD_MESSAGE responses from the PPM populate partner and cable identity in sysfs: nospike-rev4 /sys/class/typec # ls port0-partner/identity/ cert_stat id_header product product_type_vdo1 product_type_vdo2 product_type_vdo3 nospike-rev4 /sys/class/typec # ls port0-cable/identity/ cert_stat id_header product product_type_vdo1 product_type_vdo2 product_type_vdo3 Changes in v3: - None. Changes in v2: - Re-ordered memset call and null assignment when unregistering partners and cables. - Supports registering partner and cable identity with UCSI versions before v2.0. - Shortened lines to within 80 characters with the exception of two error log lines with three indentations. - Tested on usb-testing branch merged with chromeOS 6.8-rc2 kernel. drivers/usb/typec/ucsi/ucsi.c | 125 ++++++++++++++++++++++++++++++++++ drivers/usb/typec/ucsi/ucsi.h | 29 ++++++++ 2 files changed, 154 insertions(+) diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c index 7c84687b5d1a3..4088422b33c74 100644 --- a/drivers/usb/typec/ucsi/ucsi.c +++ b/drivers/usb/typec/ucsi/ucsi.c @@ -646,6 +646,121 @@ static int ucsi_get_src_pdos(struct ucsi_connector *c= on) return ret; } =20 +static int ucsi_read_identity(struct ucsi_connector *con, u8 recipient, + struct usb_pd_identity *id) +{ + struct ucsi *ucsi =3D con->ucsi; + struct ucsi_pd_message_disc_id resp =3D {}; + u64 command; + int ret; + + if (ucsi->version < UCSI_VERSION_2_0) { + /* + * Before UCSI v2.0, MESSAGE_IN is 16 bytes which cannot fit + * the 28 byte identity response including the VDM header. + * First request the VDM header, ID Header VDO, Cert Stat VDO + * and Product VDO. + */ + command =3D UCSI_COMMAND(UCSI_GET_PD_MESSAGE) | + UCSI_CONNECTOR_NUMBER(con->num); + command |=3D UCSI_GET_PD_MESSAGE_RECIPIENT(recipient); + command |=3D UCSI_GET_PD_MESSAGE_OFFSET(0); + command |=3D UCSI_GET_PD_MESSAGE_BYTES(0x10); + command |=3D UCSI_GET_PD_MESSAGE_TYPE( + UCSI_GET_PD_MESSAGE_TYPE_IDENTITY); + + ret =3D ucsi_send_command(ucsi, command, &resp, 0x10); + if (ret < 0) { + dev_err(ucsi->dev, + "UCSI_GET_PD_MESSAGE v1.2 failed first request (%d)\n", + ret); + return ret; + } + + /* Then request Product Type VDO1 through Product Type VDO3. */ + command =3D UCSI_COMMAND(UCSI_GET_PD_MESSAGE) | + UCSI_CONNECTOR_NUMBER(con->num); + command |=3D UCSI_GET_PD_MESSAGE_RECIPIENT(recipient); + command |=3D UCSI_GET_PD_MESSAGE_OFFSET(0x10); + command |=3D UCSI_GET_PD_MESSAGE_BYTES(0xc); + command |=3D UCSI_GET_PD_MESSAGE_TYPE( + UCSI_GET_PD_MESSAGE_TYPE_IDENTITY); + + ret =3D ucsi_send_command(ucsi, command, &resp.vdo[0], 0xc); + if (ret < 0) { + dev_err(ucsi->dev, + "UCSI_GET_PD_MESSAGE v1.2 failed second request (%d)\n", + ret); + return ret; + } + } else { + /* + * In UCSI v2.0 and after, MESSAGE_IN is large enough to request + * the large enough to request the full Discover Identity + * response at once. + */ + command =3D UCSI_COMMAND(UCSI_GET_PD_MESSAGE) | + UCSI_CONNECTOR_NUMBER(con->num); + command |=3D UCSI_GET_PD_MESSAGE_RECIPIENT(recipient); + /* VDM Header + 6 VDOs (0x1c bytes) without an offset */ + command |=3D UCSI_GET_PD_MESSAGE_OFFSET(0); + command |=3D UCSI_GET_PD_MESSAGE_BYTES(0x1c); + command |=3D UCSI_GET_PD_MESSAGE_TYPE( + UCSI_GET_PD_MESSAGE_TYPE_IDENTITY); + + ret =3D ucsi_send_command(ucsi, command, &resp, sizeof(resp)); + if (ret < 0) { + dev_err(ucsi->dev, "UCSI_GET_PD_MESSAGE failed (%d)\n", + ret); + return ret; + } + } + + id->id_header =3D resp.id_header; + id->cert_stat =3D resp.cert_stat; + id->product =3D resp.product; + id->vdo[0] =3D resp.vdo[0]; + id->vdo[1] =3D resp.vdo[1]; + id->vdo[2] =3D resp.vdo[2]; + return 0; +} + +static int ucsi_get_partner_identity(struct ucsi_connector *con) +{ + int ret; + + ret =3D ucsi_read_identity(con, UCSI_RECIPIENT_SOP, + &con->partner_identity); + if (ret < 0) + return ret; + + ret =3D typec_partner_set_identity(con->partner); + if (ret < 0) { + dev_err(con->ucsi->dev, "Failed to set partner identity (%d)\n", + ret); + } + + return ret; +} + +static int ucsi_get_cable_identity(struct ucsi_connector *con) +{ + int ret; + + ret =3D ucsi_read_identity(con, UCSI_RECIPIENT_SOP_P, + &con->cable_identity); + if (ret < 0) + return ret; + + ret =3D typec_cable_set_identity(con->cable); + if (ret < 0) { + dev_err(con->ucsi->dev, "Failed to set cable identity (%d)\n", + ret); + } + + return ret; +} + static int ucsi_check_altmodes(struct ucsi_connector *con) { int ret, num_partner_am; @@ -754,6 +869,7 @@ static int ucsi_register_cable(struct ucsi_connector *c= on) break; } =20 + desc.identity =3D &con->cable_identity; desc.active =3D !!(UCSI_CABLE_PROP_FLAG_ACTIVE_CABLE & con->cable_prop.flags); desc.pd_revision =3D UCSI_CABLE_PROP_FLAG_PD_MAJOR_REV_AS_BCD( @@ -777,6 +893,7 @@ static void ucsi_unregister_cable(struct ucsi_connector= *con) return; =20 typec_unregister_cable(con->cable); + memset(&con->cable_identity, 0, sizeof(con->cable_identity)); con->cable =3D NULL; } =20 @@ -827,6 +944,7 @@ static int ucsi_register_partner(struct ucsi_connector = *con) break; } =20 + desc.identity =3D &con->partner_identity; desc.usb_pd =3D pwr_opmode =3D=3D UCSI_CONSTAT_PWR_OPMODE_PD; desc.pd_revision =3D UCSI_CONCAP_FLAG_PARTNER_PD_MAJOR_REV_AS_BCD(con->ca= p.flags); =20 @@ -855,6 +973,7 @@ static void ucsi_unregister_partner(struct ucsi_connect= or *con) ucsi_unregister_altmodes(con, UCSI_RECIPIENT_SOP); ucsi_unregister_cable(con); typec_unregister_partner(con->partner); + memset(&con->partner_identity, 0, sizeof(con->partner_identity)); con->partner =3D NULL; } =20 @@ -975,6 +1094,10 @@ static int ucsi_check_cable(struct ucsi_connector *co= n) if (ret < 0) return ret; =20 + ret =3D ucsi_get_cable_identity(con); + if (ret < 0) + return ret; + return 0; } =20 @@ -1019,6 +1142,7 @@ static void ucsi_handle_connector_change(struct work_= struct *work) ucsi_register_partner(con); ucsi_partner_task(con, ucsi_check_connection, 1, HZ); ucsi_partner_task(con, ucsi_check_connector_capability, 1, HZ); + ucsi_partner_task(con, ucsi_get_partner_identity, 1, HZ); ucsi_partner_task(con, ucsi_check_cable, 1, HZ); =20 if (UCSI_CONSTAT_PWR_OPMODE(con->status.flags) =3D=3D @@ -1418,6 +1542,7 @@ static int ucsi_register_port(struct ucsi *ucsi, stru= ct ucsi_connector *con) ucsi_register_partner(con); ucsi_pwr_opmode_change(con); ucsi_port_psy_changed(con); + ucsi_get_partner_identity(con); ucsi_check_cable(con); } =20 diff --git a/drivers/usb/typec/ucsi/ucsi.h b/drivers/usb/typec/ucsi/ucsi.h index f0aabef0b7c64..b89fae82e8ce7 100644 --- a/drivers/usb/typec/ucsi/ucsi.h +++ b/drivers/usb/typec/ucsi/ucsi.h @@ -106,6 +106,7 @@ void ucsi_connector_change(struct ucsi *ucsi, u8 num); #define UCSI_GET_CABLE_PROPERTY 0x11 #define UCSI_GET_CONNECTOR_STATUS 0x12 #define UCSI_GET_ERROR_STATUS 0x13 +#define UCSI_GET_PD_MESSAGE 0x15 =20 #define UCSI_CONNECTOR_NUMBER(_num_) ((u64)(_num_) << 16) #define UCSI_COMMAND(_cmd_) ((_cmd_) & 0xff) @@ -159,6 +160,18 @@ void ucsi_connector_change(struct ucsi *ucsi, u8 num); #define UCSI_MAX_PDOS (4) #define UCSI_GET_PDOS_SRC_PDOS ((u64)1 << 34) =20 +/* GET_PD_MESSAGE command bits */ +#define UCSI_GET_PD_MESSAGE_RECIPIENT(_r_) ((u64)(_r_) << 23) +#define UCSI_GET_PD_MESSAGE_OFFSET(_r_) ((u64)(_r_) << 26) +#define UCSI_GET_PD_MESSAGE_BYTES(_r_) ((u64)(_r_) << 34) +#define UCSI_GET_PD_MESSAGE_TYPE(_r_) ((u64)(_r_) << 42) +#define UCSI_GET_PD_MESSAGE_TYPE_SNK_CAP_EXT 0 +#define UCSI_GET_PD_MESSAGE_TYPE_SRC_CAP_EXT 1 +#define UCSI_GET_PD_MESSAGE_TYPE_BAT_CAP 2 +#define UCSI_GET_PD_MESSAGE_TYPE_BAT_STAT 3 +#define UCSI_GET_PD_MESSAGE_TYPE_IDENTITY 4 +#define UCSI_GET_PD_MESSAGE_TYPE_REVISION 5 + /* -----------------------------------------------------------------------= --- */ =20 /* Error information returned by PPM in response to GET_ERROR_STATUS comma= nd. */ @@ -338,6 +351,18 @@ struct ucsi_connector_status { ((get_unaligned_le32(&(_p_)[5]) & GENMASK(16, 1)) >> 1) } __packed; 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Thu, 29 Feb 2024 15:28:22 -0800 (PST) Date: Thu, 29 Feb 2024 23:26:25 +0000 In-Reply-To: <20240229232625.3944115-1-jthies@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20240229232625.3944115-1-jthies@google.com> X-Mailer: git-send-email 2.44.0.rc1.240.g4c46232300-goog Message-ID: <20240229232625.3944115-5-jthies@google.com> Subject: [PATCH v3 4/4] usb: typec: ucsi: Register SOP' alternate modes with cable plug From: Jameson Thies To: heikki.krogerus@linux.intel.com, linux-usb@vger.kernel.org Cc: jthies@google.com, pmalani@chromium.org, bleung@google.com, abhishekpandit@chromium.org, andersson@kernel.org, dmitry.baryshkov@linaro.org, fabrice.gasnier@foss.st.com, gregkh@linuxfoundation.org, hdegoede@redhat.com, neil.armstrong@linaro.org, rajaram.regupathy@intel.com, saranya.gopal@intel.com, linux-kernel@vger.kernel.org, Benson Leung Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Register SOP' alternate modes with a Type-C Connector Class cable plug. Alternate modes are queried from the PPM using the GET_ALTERNATE_MODES command with recipient set to SOP'. Reviewed-by: Benson Leung Reviewed-by: Prashant Malani Reviewed-by: Heikki Krogerus Signed-off-by: Jameson Thies --- SOP' GET_ALTERNATE_MODE responses from the PPM are correctly registered to the cable plug. nospike-rev4 /sys/class/typec # ls port0-cable/port0-plug0/ device port0-plug0.0 port0-plug0.1 power subsystem uevent Changes in v3: - None. Changes in v2: - Shortened lines to within 80 characters. - Tested on usb-testing branch merged with chromeOS 6.8-rc2 kernel. drivers/usb/typec/ucsi/ucsi.c | 60 +++++++++++++++++++++++++++++++++++ drivers/usb/typec/ucsi/ucsi.h | 2 ++ 2 files changed, 62 insertions(+) diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c index 4088422b33c74..281954fe9d855 100644 --- a/drivers/usb/typec/ucsi/ucsi.c +++ b/drivers/usb/typec/ucsi/ucsi.c @@ -399,6 +399,27 @@ static int ucsi_register_altmode(struct ucsi_connector= *con, =20 con->partner_altmode[i] =3D alt; break; + case UCSI_RECIPIENT_SOP_P: + i =3D ucsi_next_altmode(con->plug_altmode); + if (i < 0) { + ret =3D i; + goto err; + } + + ret =3D ucsi_altmode_next_mode(con->plug_altmode, desc->svid); + if (ret < 0) + return ret; + + desc->mode =3D ret; + + alt =3D typec_plug_register_altmode(con->plug, desc); + if (IS_ERR(alt)) { + ret =3D PTR_ERR(alt); + goto err; + } + + con->plug_altmode[i] =3D alt; + break; default: return -EINVAL; } @@ -566,6 +587,9 @@ static void ucsi_unregister_altmodes(struct ucsi_connec= tor *con, u8 recipient) case UCSI_RECIPIENT_SOP: adev =3D con->partner_altmode; break; + case UCSI_RECIPIENT_SOP_P: + adev =3D con->plug_altmode; + break; default: return; } @@ -849,6 +873,33 @@ static void ucsi_unregister_partner_pdos(struct ucsi_c= onnector *con) con->partner_pd =3D NULL; } =20 +static int ucsi_register_plug(struct ucsi_connector *con) +{ + struct typec_plug *plug; + struct typec_plug_desc desc =3D {.index =3D TYPEC_PLUG_SOP_P}; + + plug =3D typec_register_plug(con->cable, &desc); + if (IS_ERR(plug)) { + dev_err(con->ucsi->dev, + "con%d: failed to register plug (%ld)\n", con->num, + PTR_ERR(plug)); + return PTR_ERR(plug); + } + + con->plug =3D plug; + return 0; +} + +static void ucsi_unregister_plug(struct ucsi_connector *con) +{ + if (!con->plug) + return; + + ucsi_unregister_altmodes(con, UCSI_RECIPIENT_SOP_P); + typec_unregister_plug(con->plug); + con->plug =3D NULL; +} + static int ucsi_register_cable(struct ucsi_connector *con) { struct typec_cable *cable; @@ -892,6 +943,7 @@ static void ucsi_unregister_cable(struct ucsi_connector= *con) if (!con->cable) return; =20 + ucsi_unregister_plug(con); typec_unregister_cable(con->cable); memset(&con->cable_identity, 0, sizeof(con->cable_identity)); con->cable =3D NULL; @@ -1098,6 +1150,14 @@ static int ucsi_check_cable(struct ucsi_connector *c= on) if (ret < 0) return ret; =20 + ret =3D ucsi_register_plug(con); + if (ret < 0) + return ret; + + ret =3D ucsi_register_altmodes(con, UCSI_RECIPIENT_SOP_P); + if (ret < 0) + return ret; + return 0; } =20 diff --git a/drivers/usb/typec/ucsi/ucsi.h b/drivers/usb/typec/ucsi/ucsi.h index b89fae82e8ce7..32daf5f586505 100644 --- a/drivers/usb/typec/ucsi/ucsi.h +++ b/drivers/usb/typec/ucsi/ucsi.h @@ -429,9 +429,11 @@ struct ucsi_connector { struct typec_port *port; struct typec_partner *partner; struct typec_cable *cable; + struct typec_plug *plug; =20 struct typec_altmode *port_altmode[UCSI_MAX_ALTMODES]; struct typec_altmode *partner_altmode[UCSI_MAX_ALTMODES]; + struct typec_altmode *plug_altmode[UCSI_MAX_ALTMODES]; =20 struct typec_capability typec_cap; =20 --=20 2.44.0.rc1.240.g4c46232300-goog