From nobody Sun Feb 8 15:57:45 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 B6D0BBA34 for ; Fri, 23 Feb 2024 01:04:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708650297; cv=none; b=qcuf6P0CNIhzkKfKb6nP2Lya+3Zymr0R5538ZE0TP3c85l9Qpvbz+9YjsrQ3nbUhK7zVJyuE02BWIHCakcCl24ooOOosATunjVWcmDkqfadXBusXfYF2xm/SEWcb5YOn6D70WLm/lvsillshUF7gwQJQdubfLz3HX7Q8sNit7Vs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708650297; c=relaxed/simple; bh=AudtEw/bZJ4k+bg0BQXq7THY6fgEi4z3QFF3Hrqxw/o=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=oUKMO1OGE/pxcV15BmCIkemDoMKEXGwq5KJgGqvY5qgJll2InlT7mqerOXXYojldxXu0TYOkisbkuYMMy86hjVNK3AP9wzso0JGSgZyvTAY3wnNZaQvjctVn5Vkf2gLLUOI0R+z7IRLn/OBMBaTj1864frPlrkF07LKWC4v85iQ= 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=coZQTzsb; arc=none smtp.client-ip=209.85.128.201 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="coZQTzsb" Received: by mail-yw1-f201.google.com with SMTP id 00721157ae682-5f38d676cecso18874507b3.0 for ; Thu, 22 Feb 2024 17:04:55 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1708650294; x=1709255094; 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=nQLpgxev/UCFVGLIwR3AMfjodJpmJGMqgmKMEJOc+QI=; b=coZQTzsb+j5y6+fDWV/GhQTsnEY2EaDPan0aE8Jd8U3rmuOvbzPhtiX6PZ6knZJWfH /7+ZMMWp1YggZW2i8CTzBdZD4VIDFnTlRztMzTq03XfXqf8E9Hy7y4j1ezQxKiqPpEJx Y3BsCnW40ugWxbpCf4vVCwcIrSGakvXQjxEq9/lP7DvI7xW4H6l7UX2XbyAEk8fCj6KT fFfLDbHLfaAYg9D0T81D/eYT/npOnEsjnkUcYt/KSjSlnUpyanNcPLeXQG7i2c1RgCTk POxTnx6E9NONYcaAE2cedOEXaevaUBA5gN0ZC0AIYlii1ARe8tVVpWMPY2P0kG73kfsw 8m8A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1708650294; x=1709255094; 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=nQLpgxev/UCFVGLIwR3AMfjodJpmJGMqgmKMEJOc+QI=; b=QSSjz5ERb9W1qNiyobJy2ykpngoVz7WM1oT231Jj/wCgSxuySwFuJwgSjawow0Idkn EfyMBT8sa31kRsIDAXdBXfh8naEY7osa3j/m2Bl8xa3/rKANWoviR/lvZW3t7NhjRgJK URtk4qtReLKz4W/tHS7ZAOQfmXGOsmgk/bd1mLiwnI3s6nflIutCADnEp4YJWamcITjv 3mx9iD8dZr4kxREnar0BHbhbX+MzFv0cT1g+rRgvBA6+LoFZbqGc45suwcWjECucg+MG /f8sznnE6WRsSvX6ioBUyZaEBEVxyJVg29hHBU99EeUU0OEhce5ylWga9ZMw7/MuxAIK 6R1A== X-Forwarded-Encrypted: i=1; AJvYcCV31yZDh7EktQlRmSiqSJDB0eET4KdMGUt1180xig1IqpoEn7Cy8ZRYsCMqhd6IwwpFHmFIrO/pRJtVi8p3kdVjP/R9nV/WTsyjCo5I X-Gm-Message-State: AOJu0YxDwujM/qoPNrojDr1A8I05TaAJLd4/ctvu3Kb5GRSbLoOPk0av /upvq417GGTqPEXS+0IkVFzctBvrjMzCAPDzcB7l7quYnOCDEhH7Y7QCXpv0POok7MyysDoPf9g Jsw== X-Google-Smtp-Source: AGHT+IH7+MqAZARcx1INh7j3pZVkMPgMbKUi15UsYSr52zBlvbI26cjbHg9VKykt97KsPD1Sdu7371KOR2Y= X-Received: from jthies.c.googlers.com ([fda3:e722:ac3:cc00:20:ed76:c0a8:23db]) (user=jthies job=sendgmr) by 2002:a25:ab89:0:b0:dc6:e884:2342 with SMTP id v9-20020a25ab89000000b00dc6e8842342mr184752ybi.5.1708650294753; Thu, 22 Feb 2024 17:04:54 -0800 (PST) Date: Fri, 23 Feb 2024 01:03:26 +0000 In-Reply-To: <20240223010328.2826774-1-jthies@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20240223010328.2826774-1-jthies@google.com> X-Mailer: git-send-email 2.44.0.rc0.258.g7320e95886-goog Message-ID: <20240223010328.2826774-3-jthies@google.com> Subject: [PATCH 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 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. Signed-off-by: Jameson Thies Reviewed-by: Benson Leung Reviewed-by: Dmitry Baryshkov Reviewed-by: Heikki Krogerus Reviewed-by: Prashant Malani --- Tested on v6.6 kernel. Expected cable properties populate the USB Type-C connector class sysfs paths: redrix-rev3 /sys/class/typec # ls port2-cable device identity plug_type port2-plug0 power subsystem type uevent usb_power_delivery_revision drivers/usb/typec/ucsi/ucsi.c | 69 +++++++++++++++++++++++++++++++++++ drivers/usb/typec/ucsi/ucsi.h | 5 +++ 2 files changed, 74 insertions(+) diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c index ae105383e69e..15e82f5fab37 100644 --- a/drivers/usb/typec/ucsi/ucsi.c +++ b/drivers/usb/typec/ucsi/ucsi.c @@ -734,6 +734,50 @@ 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.fl= ags); + 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 +851,7 @@ 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 +952,28 @@ 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(co= n->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 +1015,7 @@ 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 +1414,7 @@ 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 469a2baf472e..f0aabef0b7c6 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; } __packed; =20 @@ -400,6 +403,7 @@ struct ucsi_connector { =20 struct typec_port *port; struct typec_partner *partner; + struct typec_cable *cable; =20 struct typec_altmode *port_altmode[UCSI_MAX_ALTMODES]; struct typec_altmode *partner_altmode[UCSI_MAX_ALTMODES]; @@ -408,6 +412,7 @@ struct ucsi_connector { =20 struct ucsi_connector_status status; struct ucsi_connector_capability cap; + struct ucsi_cable_property cable_prop; struct power_supply *psy; struct power_supply_desc psy_desc; u32 rdo; --=20 2.44.0.rc0.258.g7320e95886-goog