From patchwork Fri Jul 30 12:43:46 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kyle Tso X-Patchwork-Id: 12411203 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-21.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT, USER_IN_DEF_DKIM_WL autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3B3E9C4338F for ; Fri, 30 Jul 2021 12:45:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1E63E60E97 for ; Fri, 30 Jul 2021 12:45:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238880AbhG3MpO (ORCPT ); Fri, 30 Jul 2021 08:45:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42172 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238877AbhG3Moq (ORCPT ); Fri, 30 Jul 2021 08:44:46 -0400 Received: from mail-qv1-xf49.google.com (mail-qv1-xf49.google.com [IPv6:2607:f8b0:4864:20::f49]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EAA89C061796 for ; Fri, 30 Jul 2021 05:43:53 -0700 (PDT) Received: by mail-qv1-xf49.google.com with SMTP id m15-20020a0cbf0f0000b02902e60d75210eso5804210qvi.19 for ; Fri, 30 Jul 2021 05:43:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:message-id:mime-version:subject:from:to:cc; bh=BUiqVnmCC5LvHUiB8iYWIOWbO4jO0OfShvOq4rUC/U0=; b=uot/DzFgmwjObSu3zktrMgJ2umnJ8lum8uAOrI27vCbViA92GIbqlHdxxDRPAtckTu pERv9asVh4OIsUjb+BUVGdepbl1ymy3BdWTldI52oht4Djvx8c1uLSPY415R6wMYVqfP gh2tWn1w+GJx/x5pJ64MIl5CVdTQ5d4MVpxZcq/C15WiF5kTACB9QcDW/Ru8dv3bKYO7 1XCRNDQ1GfUcykDekKhqhlqii7cp89YBceib99SKdTvjEb4dOjmjNd2B7LZRDb5dXKUx a5PQTb0tC4XQwd4a3cymf2cMRcb8AR13tAzMA+varqD7Skn/iPnkXY10kLohLcJB0CWT oSFw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:message-id:mime-version:subject:from:to:cc; bh=BUiqVnmCC5LvHUiB8iYWIOWbO4jO0OfShvOq4rUC/U0=; b=RLKA02ityjf8j8efBMl5Uzgkmc9l9Pv0tF+dNAcs1v8/pIDlS8w2UOJ0xErrQVsBbY jt3mNypqYNoPiI3r6z3/Ig+vIwqzyyeX81eELOx4SlQAEVgWfBzXW3++xiyhqEIW62tP Rj+YX2b5YGbFDGn0YJb97HXSTutbJrCrovXEfvb3qi7s5KPt2uNMU0tVZD0/780/hYBO zixG7tSva6bKUh5buXJOB43LfBT1GPBUlA+VgZo/XXP5b75eAbwGGJdmvvOTHqDxtBxO 8bWE7B8BTV3d/6OCwN+7xUJ0++xi0erj26jZM+JLfht0Ow1Vys5zIXYBKK9Tpx7Sh5Qv gYDg== X-Gm-Message-State: AOAM531pq8Qan+nT3/jGTrBwMT3S41DZfNSMMkyLnslWmupJ8KS4kyfi X3VLILLsmIeDRp5P7VYgWts7p3mh+est X-Google-Smtp-Source: ABdhPJxzxMzASRvkFgqW+ytumwovki124B/n372u7N1TvgSmlRct/5OVggH9RDgimalWc+KEFLXb7Jn2Ascy X-Received: from kyletso.ntc.corp.google.com ([2401:fa00:fc:202:6892:a74:4970:a062]) (user=kyletso job=sendgmr) by 2002:ad4:522c:: with SMTP id r12mr2460956qvq.17.1627649032859; Fri, 30 Jul 2021 05:43:52 -0700 (PDT) Date: Fri, 30 Jul 2021 20:43:46 +0800 Message-Id: <20210730124348.1986638-1-kyletso@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.32.0.554.ge1b32706d8-goog Subject: [PATCH v5 0/2] TCPM non-PD mode From: Kyle Tso To: linux@roeck-us.net, heikki.krogerus@linux.intel.com, gregkh@linuxfoundation.org, robh+dt@kernel.org Cc: badhri@google.com, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Kyle Tso Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org cover-letter is the same as that in v4 The reason for this patch is to let the device/system policy decide whether PD is going to be supported using devicetree properties. A new dt property "pd-unsupported" is introduced and TCPM uses this property as a flag to decide whether PD is supported. If the flag is false (the dt property is not present), the RX functionality of the low-level driver will not be enabled. The power negotiation related states will be skipped as well. If the flag is true, everything is a what it was before. If "pd-unsupported" is present, and the port is SRC or DRP, another existing dt property "typec-power-opmode" needs to be specified to indicate which Rp value should be used when the port is SRC. changes since v4: dt-bindings: connector: Add pd-unsupported property - Corrected the subject usb: typec: tcpm: Support non-PD mode - Added Reviewed-by Kyle Tso (2): dt-bindings: connector: Add pd-unsupported property usb: typec: tcpm: Support non-PD mode .../bindings/connector/usb-connector.yaml | 4 + drivers/usb/typec/tcpm/tcpm.c | 87 +++++++++++++++---- 2 files changed, 72 insertions(+), 19 deletions(-)