From patchwork Thu Feb 29 23:26:22 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jameson Thies X-Patchwork-Id: 13577732 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 3EA6B74BFE for ; Thu, 29 Feb 2024 23:27:46 +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=1709249268; cv=none; b=fimrFZWuuhEow4Iv2CtgyuWtbiODa4fa41VcF7afuqJmbRSgGBxSJwcOp4w0zBSq6OYib3umeweDJElPcJYdrQwzqrRD7t6WwacG2h6hHXGEF4GT7WHKSSeHfx3dgG1AfxUfkiDbnKV1Zx9ETX7APO7hgho/2xgFkcYZx2fqgdI= 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=209.85.128.201 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="UstDicte" Received: by mail-yw1-f201.google.com with SMTP id 00721157ae682-6097cdb2d5aso10385067b3.3 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=Jo5c2/LJVBy/arTkakkjKsv1oQSiYR8J6AzGtNZpBzAO/SHDS1daEFCRu9zSfVt9jA djh9j27kpEGTtE8RyQDfREQTnOF5I4PZjUTkYNBZJ82Uwc0bap3BkUTRTzNyJ6pklL+o wcp5JiwDmic6zsNkAnuDnlrPTALyoR216V9pWBx8DVF+kZ/c86Wl9f+BkCCi2S1DHmiX fcgtfG18qwrCo/iHxVe0V2ahUMoyZ1ztI6ACweGNQ2046FNoGUTqrNBksq1iEKzU6sJi ZSFDwmvdc6rGUSeWaAW4EoKBq5vkpXlZc4vmjzvijShjmmhlfN4UbZA6U5MAePk/l+Cu hNMA== X-Forwarded-Encrypted: i=1; AJvYcCWPw08456VvSn5hHb9Jb82VPXrr+6vKXKB8FFONSi6H1RsTLEhL0nCIPlAIdmnshfcE62KBDPt6zG6I6qFZa7tn+br5KF79i7rU X-Gm-Message-State: AOJu0YwjP4sPFsQj9Z+2LwSej5296LERRu0inhurUkq9kk6an2t0jEGW hIkNeGlPTrAZZvHzhkjSFNGstrVtZX/cgvSL8fg1cAyIQIIc2Y679yfgTWrbClHuR8J3Sv08M0i Q1w== 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-usb@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 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; From patchwork Thu Feb 29 23:26:23 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jameson Thies X-Patchwork-Id: 13577733 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 402AA13E7C3 for ; Thu, 29 Feb 2024 23:27:56 +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=1709249278; cv=none; b=tF/7mes3MY0PlhoJfqQgkxvAb5Co/NSQdEfQ0J4HFA786qPdikreX6i5GgBn+A8QawHCDlVzY+uKobPlE3NJpiCmll90MgSiI8lzOQirC46HlqFH7XR5xht4yR2yrMY7yszyjt4IkZvGgdlKxMwu7oQqMXzhvnO2sMIlB35vsSU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709249278; c=relaxed/simple; bh=zVkV9Lv4z6NJ5nKGNK4w+Ge1IZKAPYn8766k2zyh1V0=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=UWadbvYeYEZf4y46P7N/m1fo5DOai9gs01LvqOk/PwtUd9Ats85SpFDjhZm+0GcNKhZePjJiMl3rjihRDa9EPMz2njaF7ysJYxevaH8mxIlahgeXpW/fCAuhOT8rtJXc2+HpOw0wAwTdCs0AoymK6gdpGp+aC2JG+cm7PN8BAU4= 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=DfZ/IV27; 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="DfZ/IV27" Received: by mail-yw1-f201.google.com with SMTP id 00721157ae682-608852fc324so22662457b3.2 for ; Thu, 29 Feb 2024 15:27:56 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1709249276; x=1709854076; 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=N9kAHr6PseqJ6J9peq4yN8LHGuh8P9E7ag/V2tVJ+14=; b=DfZ/IV27YKMGSlTp1HIDAuODg/zAtUYhzVxP2LWBzCw8SMmRBDQVCL9oVMbigkxZPT VA1fJxOgRgyonEday2QKbAaJ2TCyoeqrmXedGUg7pZ8Q11NV2AiWrxzZpFmXB34N0HN/ Sn6mlpscZbfbHFP97DWmV7dpn6FuvCOrolAk2OFz/9V6J3jcHm3+C/kowibxJhjvH73s mrK+3+Ycl/ggd/dnIfktenkuXG01Pxu3KSs/JuKQFo4ZXdDxa9ABOeVsjTQ07MnV/W6N +JbvXvhj83c2V/B8fp4GlMd3LzENBYpbHlnksxVAU9DaeunexQzg2ybY2jthWGUuRXwa vWTw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1709249276; x=1709854076; 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=N9kAHr6PseqJ6J9peq4yN8LHGuh8P9E7ag/V2tVJ+14=; b=L2khiL3KedbqguDvSK8IXQn1ic4cFsVt3+UGg7R8i/vykbYxXjZOOIMqJ0lkrAOKTV iMZU724oQ6uRxa8M+QzAnSfQCr6X1N6J3DHKs59hdODRuKwPRJcxBfqZ32H4ejzIlnLr RV1uvEfl6BpOUWP2MmhZqNxKDe6eMcNsHqiSsdsoAyOov5ee1jalihIevcBS0hD3kaho P5UpFPZh7/XjTybeTQ6CzFbL+Cs26Ru/RqgYbHN5dz47y0UX93VNaByvlWc1a5lo/pjh +K4YZWgmxLSnYTx/ZCJ7e7+MWlcrGHqyeBCIEzNQo12lm3+Bmqx+LlaeiNZ/9NouqJBm bPnA== X-Forwarded-Encrypted: i=1; AJvYcCWFz/RseX9gajkjOmaTrYMkdQVMONUz/xc2R3lhqaaa8aJfKkgDZbTL/E77vT5uW5iKfuD9odSKDm9+bWsfUCEsdyFRJ2nliMmx X-Gm-Message-State: AOJu0YwV8/Wb27r0juNptdlPTVKMXMk3LK8QAHeJJBP4e/3+OX7zikqu qFMThRiUdsFzAnwS1ufvL6u5DBPS1S3a2O81woCaUoBtHb3VoDs69ETfe5rFTY0VLWnMrwTTAFM LlQ== X-Google-Smtp-Source: AGHT+IEyPaBPyUk4B1LwqqJGD/dGBn71yAtbHF2GaEzzXAimWpS585c7j/xu8ZbvSsrnqic/d9XFYGOT+3o= X-Received: from jthies.c.googlers.com ([fda3:e722:ac3:cc00:20:ed76:c0a8:23db]) (user=jthies job=sendgmr) by 2002:a05:690c:c17:b0:608:8773:85da with SMTP id cl23-20020a05690c0c1700b00608877385damr8741ywb.0.1709249276217; 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-usb@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 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_connector *con) con->partner_pd = NULL; } +static int ucsi_register_cable(struct ucsi_connector *con) +{ + struct typec_cable *cable; + struct typec_cable_desc desc = {}; + + switch (UCSI_CABLE_PROP_FLAG_PLUG_TYPE(con->cable_prop.flags)) { + case UCSI_CABLE_PROPERTY_PLUG_TYPE_A: + desc.type = USB_PLUG_TYPE_A; + break; + case UCSI_CABLE_PROPERTY_PLUG_TYPE_B: + desc.type = USB_PLUG_TYPE_B; + break; + case UCSI_CABLE_PROPERTY_PLUG_TYPE_C: + desc.type = USB_PLUG_TYPE_C; + break; + default: + desc.type = USB_PLUG_NONE; + break; + } + + desc.active = !!(UCSI_CABLE_PROP_FLAG_ACTIVE_CABLE & + con->cable_prop.flags); + desc.pd_revision = UCSI_CABLE_PROP_FLAG_PD_MAJOR_REV_AS_BCD( + con->cable_prop.flags); + + cable = 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 = cable; + return 0; +} + +static void ucsi_unregister_cable(struct ucsi_connector *con) +{ + if (!con->cable) + return; + + typec_unregister_cable(con->cable); + con->cable = 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_connector *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 = NULL; } @@ -907,6 +954,30 @@ static int ucsi_check_connection(struct ucsi_connector *con) return 0; } +static int ucsi_check_cable(struct ucsi_connector *con) +{ + u64 command; + int ret; + + if (con->cable) + return 0; + + command = UCSI_GET_CABLE_PROPERTY | UCSI_CONNECTOR_NUMBER(con->num); + ret = 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 = 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 = container_of(work, struct ucsi_connector, @@ -948,6 +1019,7 @@ 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_check_cable, 1, HZ); if (UCSI_CONSTAT_PWR_OPMODE(con->status.flags) == UCSI_CONSTAT_PWR_OPMODE_PD) @@ -1346,6 +1418,7 @@ static int ucsi_register_port(struct ucsi *ucsi, struct ucsi_connector *con) ucsi_register_partner(con); ucsi_pwr_opmode_change(con); ucsi_port_psy_changed(con); + ucsi_check_cable(con); } /* 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; } __packed; @@ -400,6 +403,7 @@ struct ucsi_connector { struct typec_port *port; struct typec_partner *partner; + struct typec_cable *cable; struct typec_altmode *port_altmode[UCSI_MAX_ALTMODES]; struct typec_altmode *partner_altmode[UCSI_MAX_ALTMODES]; @@ -408,6 +412,7 @@ struct ucsi_connector { 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; From patchwork Thu Feb 29 23:26:24 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jameson Thies X-Patchwork-Id: 13577734 Received: from mail-yb1-f201.google.com (mail-yb1-f201.google.com [209.85.219.201]) (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 B0E7B200CD for ; Thu, 29 Feb 2024 23:28:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.219.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709249290; cv=none; b=YLKsC7CQoz5Ws+hFMcYY8MP8/X+e3aqGSM+9E8OtzbL2gKMnOJkM+7cigo7IuMQ5BVF2sr3a8QVGc+klICRVxtsmx0IoGmx/BHSgJ0lG3kJvlL8GCHOfGf0oNaDVYhLqpCDw6S6NeO9mtdtZLAJBN3EQ8yqeJb4UOmx2P0/NbsE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709249290; c=relaxed/simple; bh=edGmOSoQMVD2u38yE1yMurpWdztdrOqPIpxnPb19KFM=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=rEiqkjAPk1I6vNplkhNisOzkA0rdIajbq0u5zrp6qS3SQPyxnp2Jmk78/edS0vDOBrl5eEdyv9esAAzN9v4HwEV+gksYBHPjK+c6EFj0XkYyw9JGae79nXb94pTVvE9eSMD7A0UJ5kEJqbnX/S0Dqz4o5nueHTjiqQ8Fcr6sDKc= 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=QKHhaNoN; arc=none smtp.client-ip=209.85.219.201 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="QKHhaNoN" Received: by mail-yb1-f201.google.com with SMTP id 3f1490d57ef6-dbe9e13775aso2525685276.1 for ; Thu, 29 Feb 2024 15:28:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1709249287; x=1709854087; 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=R6EX1C7KAOXRIXYaHKuIEyWBFy8Yv7CZZQhI1NgZXIY=; b=QKHhaNoNBIVuHv3fFcCZTBkVmtu21Be0hACblqvl8Q/wWRLOvEXyDq9dT74H9LujDb H7tukz+LhAM/516ZnHSgGVM8LAsGqff9oc49wyX2NoM6RNg/FzHGbBdASMUT4Tu1lhJm 7Nhg9F/1prpQyI5I/ODQlrzw8erCKlktLHqmOuxE8jr+OyrJ+Ko5x5egTh9PmmzwYAiV EmC0v+rg5nojEwFwCatokme8QNYCr26Qc8oHOQ5MWb5lX4Z9LpYXBEIEa6aus0qy2RDW k2gBX+e0/FDVM4AEuUUNFFJVVlsCydmdURKaOOlAoNOqS4xBQ4E/1ahBELR4+DKiqO7M /bwQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1709249287; x=1709854087; 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=R6EX1C7KAOXRIXYaHKuIEyWBFy8Yv7CZZQhI1NgZXIY=; b=VNTZcwxNgd1Xnv7yvRQsFVnNji4SJv3kPBLTfZQBgj+2+7vUt+hMUbjvrw1fvjF+qG wqS36baik8OggnRaqcAwcKf5KW83RNVSumLBQLR7qL61FHXF0d10TNSTnVMocetuwgB/ At2FeOnX64S3GEV0vgVek4BZy1lU8uxNm9nA2CA/rJ3+0qaCElhhp0qEw8E1vU75IvSK WVT3tYIAXvVkOn+z0RTt8TqjTC50WEIX9mQcoAyYErfSVSk+hVzJyd+41yHbuVu+zNU5 U2pgBbvZfoDTL8jXb4w+3f86NPxOo9c6fjEMKeJxNZnWb1gyrxxHASnb61gO89IJiXBF AWjw== X-Forwarded-Encrypted: i=1; AJvYcCVzWONinK4X6qTuFMrafM7za7MTMFLoYzAA9mhOhcvVKq0BgnKowtto1IYLQHvT2pkr5vgZNJXwTNFqEjn92Y9XpO194DMHlWmH X-Gm-Message-State: AOJu0YzaYDtGVUHZ+GQ9yNYvpnxd2jwOLv190uS7h/4XkZwk87PfNNBh 2Zra9pZyAutWauyRbAmEaSNqjCj1VIBzdJGjuA0ZoHzAOYE9/6DtQ6QtdKjCWHt5mRLvpLzwKAZ txw== X-Google-Smtp-Source: AGHT+IEOZx8tXzIZbP2c+lNWxaVusTiE5AUhdazQWPrQEPMUK8kGR9/Q9BK0yVwzk//NIvAa+ncmUrSCJ1A= X-Received: from jthies.c.googlers.com ([fda3:e722:ac3:cc00:20:ed76:c0a8:23db]) (user=jthies job=sendgmr) by 2002:a05:6902:d42:b0:dc6:e5d3:5f03 with SMTP id cs2-20020a0569020d4200b00dc6e5d35f03mr872838ybb.4.1709249286897; 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-usb@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 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 *con) return ret; } +static int ucsi_read_identity(struct ucsi_connector *con, u8 recipient, + struct usb_pd_identity *id) +{ + struct ucsi *ucsi = con->ucsi; + struct ucsi_pd_message_disc_id resp = {}; + 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 = UCSI_COMMAND(UCSI_GET_PD_MESSAGE) | + UCSI_CONNECTOR_NUMBER(con->num); + command |= UCSI_GET_PD_MESSAGE_RECIPIENT(recipient); + command |= UCSI_GET_PD_MESSAGE_OFFSET(0); + command |= UCSI_GET_PD_MESSAGE_BYTES(0x10); + command |= UCSI_GET_PD_MESSAGE_TYPE( + UCSI_GET_PD_MESSAGE_TYPE_IDENTITY); + + ret = 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 = UCSI_COMMAND(UCSI_GET_PD_MESSAGE) | + UCSI_CONNECTOR_NUMBER(con->num); + command |= UCSI_GET_PD_MESSAGE_RECIPIENT(recipient); + command |= UCSI_GET_PD_MESSAGE_OFFSET(0x10); + command |= UCSI_GET_PD_MESSAGE_BYTES(0xc); + command |= UCSI_GET_PD_MESSAGE_TYPE( + UCSI_GET_PD_MESSAGE_TYPE_IDENTITY); + + ret = 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 = UCSI_COMMAND(UCSI_GET_PD_MESSAGE) | + UCSI_CONNECTOR_NUMBER(con->num); + command |= UCSI_GET_PD_MESSAGE_RECIPIENT(recipient); + /* VDM Header + 6 VDOs (0x1c bytes) without an offset */ + command |= UCSI_GET_PD_MESSAGE_OFFSET(0); + command |= UCSI_GET_PD_MESSAGE_BYTES(0x1c); + command |= UCSI_GET_PD_MESSAGE_TYPE( + UCSI_GET_PD_MESSAGE_TYPE_IDENTITY); + + ret = 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 = resp.id_header; + id->cert_stat = resp.cert_stat; + id->product = resp.product; + id->vdo[0] = resp.vdo[0]; + id->vdo[1] = resp.vdo[1]; + id->vdo[2] = resp.vdo[2]; + return 0; +} + +static int ucsi_get_partner_identity(struct ucsi_connector *con) +{ + int ret; + + ret = ucsi_read_identity(con, UCSI_RECIPIENT_SOP, + &con->partner_identity); + if (ret < 0) + return ret; + + ret = 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 = ucsi_read_identity(con, UCSI_RECIPIENT_SOP_P, + &con->cable_identity); + if (ret < 0) + return ret; + + ret = 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 *con) break; } + desc.identity = &con->cable_identity; desc.active = !!(UCSI_CABLE_PROP_FLAG_ACTIVE_CABLE & con->cable_prop.flags); desc.pd_revision = UCSI_CABLE_PROP_FLAG_PD_MAJOR_REV_AS_BCD( @@ -777,6 +893,7 @@ static void ucsi_unregister_cable(struct ucsi_connector *con) return; typec_unregister_cable(con->cable); + memset(&con->cable_identity, 0, sizeof(con->cable_identity)); con->cable = NULL; } @@ -827,6 +944,7 @@ static int ucsi_register_partner(struct ucsi_connector *con) break; } + desc.identity = &con->partner_identity; desc.usb_pd = pwr_opmode == UCSI_CONSTAT_PWR_OPMODE_PD; desc.pd_revision = UCSI_CONCAP_FLAG_PARTNER_PD_MAJOR_REV_AS_BCD(con->cap.flags); @@ -855,6 +973,7 @@ static void ucsi_unregister_partner(struct ucsi_connector *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 = NULL; } @@ -975,6 +1094,10 @@ static int ucsi_check_cable(struct ucsi_connector *con) if (ret < 0) return ret; + ret = ucsi_get_cable_identity(con); + if (ret < 0) + return ret; + return 0; } @@ -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); if (UCSI_CONSTAT_PWR_OPMODE(con->status.flags) == @@ -1418,6 +1542,7 @@ static int ucsi_register_port(struct ucsi *ucsi, struct 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); } 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 #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) +/* 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 + /* -------------------------------------------------------------------------- */ /* Error information returned by PPM in response to GET_ERROR_STATUS command. */ @@ -338,6 +351,18 @@ struct ucsi_connector_status { ((get_unaligned_le32(&(_p_)[5]) & GENMASK(16, 1)) >> 1) } __packed; +/* + * Data structure filled by PPM in response to GET_PD_MESSAGE command with the + * Response Message Type set to Discover Identity Response. + */ +struct ucsi_pd_message_disc_id { + u32 vdm_header; + u32 id_header; + u32 cert_stat; + u32 product; + u32 vdo[3]; +} __packed; + /* -------------------------------------------------------------------------- */ struct ucsi_debugfs_entry { @@ -428,6 +453,10 @@ struct ucsi_connector { struct usb_power_delivery_capabilities *partner_sink_caps; struct usb_role_switch *usb_role_sw; + + /* USB PD identity */ + struct usb_pd_identity partner_identity; + struct usb_pd_identity cable_identity; }; int ucsi_send_command(struct ucsi *ucsi, u64 command, From patchwork Thu Feb 29 23:26:25 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jameson Thies X-Patchwork-Id: 13577735 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 8525B446AC for ; Thu, 29 Feb 2024 23:28:23 +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=1709249305; cv=none; b=J1ZPjiqD2JA1+HaU+l8bMlyyPcZQCtFKCpIYsmGwLS2LTxUyiSqKkm7Iq17mvmuAwyz2Jx62BWxU54fA5MmW26iZXwtcOFYq/aDlpdFQmTA/CGv1J7j+LmN4Z1oSFTG5TlXUHXFApcpsTQXI2HejqfIj6XPZ4Ix3Qq+YQvQU1oI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709249305; c=relaxed/simple; bh=sjFQtDvhvEyWLfprHkf57jFvK86g9+U0imPTasrTbf0=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=l95YpT8dbZFIC/heE4CVZ5g8p6GKlE/SDVDbUj9mSCi5UP4xJGZKKhbMl4DJXE8zFfyHKyogyhLVx6Nq17OFSA9D6FpryHcQ5IaZ8sSB2O3d0KKawJ74Rf88G6d09Q+zHZYitD/U1MuIQe9WAkHnsN3PALdIPx6vKz+ZPkw7YLo= 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=nm8n2PeT; 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="nm8n2PeT" Received: by mail-yw1-f202.google.com with SMTP id 00721157ae682-608e88ca078so25275247b3.1 for ; Thu, 29 Feb 2024 15:28:23 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1709249302; x=1709854102; 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=DIpbzGnuxG/veYQVRb7uyrg5E8imeH2l3OOJtVWsq90=; b=nm8n2PeTnaFNoXXE3u8FAy2WgfsyzGQ8mEd5TNbxK2nlw9kMeOGqJPEg05bc9NGooO r+a0QYlNZWUnopzncKv1u/IU/dXFTc19fIHqy+2uPi50AA29And35/HEyi0lRtmdpY5C yoaAC6dVp23EBDzefol2IOhW2r/uEPgNfMQTrqnNOMGrkylV+YId3A5jV+CB7T7Jag4F E5HeaOXV0B+Psn2ImVbftPyjZmZWvyyHsLWMU+TvhpYwS4oHHBGSMl7TL+ysDpU4euHG hOgjxSE0zzESIJ47nt82kq/EPBZ7RxgFT169F4HXAZmS9X3uIO/stly3KQBQPrk3IzO2 rsYA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1709249302; x=1709854102; 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=DIpbzGnuxG/veYQVRb7uyrg5E8imeH2l3OOJtVWsq90=; b=Xk7MnM1UjDnfO2f5l3gay4fmZLK9vD1Wk+vpTI8LMpPqVo8aeFyNgzhAKv5cS8OiPc OlbjKFxliObqFuIO3fKaFVtNjeE5pbuR2N8r7lz05iWKUlEU0crLjhTgmoqD6pMd6ray 7F06OCDiCvdH8xebRUHs39jVzJaJBDNot7iqDfjxnqBqfzXrswaiWoyaVQTOfZWwVBng UFgXFv+69dpEkXVJ+T0GFnKAXYW3v+YI1uR7P+yhwJnXzmJjSUuQ+vqdJBoNOCwJMJHi g9EorUhUWzpXVbjzz17F5LwFC8BI8BIrOMtYTrlwPWHAq/QIxHBLgTIqlpEghm6mEKnM 72JA== X-Forwarded-Encrypted: i=1; AJvYcCWR4t/jPImpd0ffwLr1jVO8Cb0Hzwy/FzAFNHsb1WpTkrTDfdEhmvGuKZ9Fusx0KhhcctBB2iYFtPy5owrJ1D7d7ZhBl1wRdWRn X-Gm-Message-State: AOJu0YzjFZZez7aeIcO3/L3f4YKXW1jEwFWJzJOrgMsgcb9mrx4XYdLn JeCrhbZzECckzZHi6O2GEv4me1TXMm8hcenZ3JNqSFLzCPPmgyK3CR/dvwdBD0ZlOi9jtCj47r2 hhQ== X-Google-Smtp-Source: AGHT+IEQdV7H7CHxrnccmLNuQKd/TUmgGzmqv3n4/NAfpiq2qW0h/l/JfxuMlMpEcrlOT+b5qU1x1R6kbbw= X-Received: from jthies.c.googlers.com ([fda3:e722:ac3:cc00:20:ed76:c0a8:23db]) (user=jthies job=sendgmr) by 2002:a81:9808:0:b0:609:5dc8:fc81 with SMTP id p8-20020a819808000000b006095dc8fc81mr1551ywg.1.1709249302545; 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-usb@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 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, con->partner_altmode[i] = alt; break; + case UCSI_RECIPIENT_SOP_P: + i = ucsi_next_altmode(con->plug_altmode); + if (i < 0) { + ret = i; + goto err; + } + + ret = ucsi_altmode_next_mode(con->plug_altmode, desc->svid); + if (ret < 0) + return ret; + + desc->mode = ret; + + alt = typec_plug_register_altmode(con->plug, desc); + if (IS_ERR(alt)) { + ret = PTR_ERR(alt); + goto err; + } + + con->plug_altmode[i] = alt; + break; default: return -EINVAL; } @@ -566,6 +587,9 @@ static void ucsi_unregister_altmodes(struct ucsi_connector *con, u8 recipient) case UCSI_RECIPIENT_SOP: adev = con->partner_altmode; break; + case UCSI_RECIPIENT_SOP_P: + adev = con->plug_altmode; + break; default: return; } @@ -849,6 +873,33 @@ static void ucsi_unregister_partner_pdos(struct ucsi_connector *con) con->partner_pd = NULL; } +static int ucsi_register_plug(struct ucsi_connector *con) +{ + struct typec_plug *plug; + struct typec_plug_desc desc = {.index = TYPEC_PLUG_SOP_P}; + + plug = 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 = 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 = 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; + ucsi_unregister_plug(con); typec_unregister_cable(con->cable); memset(&con->cable_identity, 0, sizeof(con->cable_identity)); con->cable = NULL; @@ -1098,6 +1150,14 @@ static int ucsi_check_cable(struct ucsi_connector *con) if (ret < 0) return ret; + ret = ucsi_register_plug(con); + if (ret < 0) + return ret; + + ret = ucsi_register_altmodes(con, UCSI_RECIPIENT_SOP_P); + if (ret < 0) + return ret; + return 0; } 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; struct typec_altmode *port_altmode[UCSI_MAX_ALTMODES]; struct typec_altmode *partner_altmode[UCSI_MAX_ALTMODES]; + struct typec_altmode *plug_altmode[UCSI_MAX_ALTMODES]; struct typec_capability typec_cap;