From patchwork Thu May 27 08:44:17 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kyle Tso X-Patchwork-Id: 449255 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=-26.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, 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 8C0D7C47089 for ; Thu, 27 May 2021 08:44:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 685A261028 for ; Thu, 27 May 2021 08:44:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235574AbhE0Iqa (ORCPT ); Thu, 27 May 2021 04:46:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54044 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235576AbhE0Iq0 (ORCPT ); Thu, 27 May 2021 04:46:26 -0400 Received: from mail-qk1-x749.google.com (mail-qk1-x749.google.com [IPv6:2607:f8b0:4864:20::749]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3CE36C06138B for ; Thu, 27 May 2021 01:44:51 -0700 (PDT) Received: by mail-qk1-x749.google.com with SMTP id b19-20020a05620a0893b02902e956b29f5dso2902057qka.16 for ; Thu, 27 May 2021 01:44:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=NBDr+PfWkI5thsojxPz9Zu9rvFYhCniTcdDmiakb3Dw=; b=ux0r69a6ttQbODXqEMUgeZ85sKH1ZMbFb/gSjFmkCETjERqvim+5xdHvC8KDl8bGg7 6dmqmEkyTDBcYXsOsvPxZHGI2fSjqkBTZ4u5dl2aBvF/W8fIRty0vdOueSqxkJ/xakHq AnbJhUT0h0EJ45YvA6om3t+dSDJ6lFKQuNHFTGJR5X7yw13cQADzUqNAxduHsm6CXWuY a9eOSDyGWYCzVBN+/WcCMbRQSlRW5oZu1kBPQ6nWeMpm9kBrxzKxULdGx7QRv5EqgUQI txOTtwrEfMnfXFD+kNjO0LPakpfmBLFUbAEGldIzmvNisC3Ln7RBqTsmXNuP3rSbheO8 FzDA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=NBDr+PfWkI5thsojxPz9Zu9rvFYhCniTcdDmiakb3Dw=; b=WOw0L6ZoyOUZQXTIYJGmqzZBmkBto8rFg9rrbL8qXNQaPMrHOXzDNXLLadmenLl7sq hZvxgiCDC6epwPVnVprlznO2JIo3jbeZvrIHm/lsdbtZD5kTew1ffgrUXi7hKjASk38x vy6CsXj+SzeoXcZ1zf2ie3z7aLvj5yiYbO/4C/3Tm2vdGVAmE3tGNTs7HxhLbfIcGztA BmCy15m7y+GuKtfoLfGaXmO9kBLJJZQFWY9cm1AQmgqU2d9C64nFljMvAsNMJyUcN5oM vHEex8Y1BBgmjwvjwQbPjp2Z3ZKezgczed3HEl0qVRljfQWUZHZssUMk4kclB40v+oIp jdDA== X-Gm-Message-State: AOAM533s68YWp6AJiBYYkQdCSSd3Q8XPPGbHhcUhIm3SZ8KBOjj9r6W0 UdSAdzJYzJTebF2bSipcc4OGILUr14h2 X-Google-Smtp-Source: ABdhPJy6fnlPAVOcK75o5E5a/M2Mr+tkHtuP8kxViBO7TwlYcGtSRFK8RoyP5a3gCSyXFOAMTvdxfaGom61d X-Received: from kyletso.ntc.corp.google.com ([2401:fa00:fc:202:c563:7257:f641:cbcd]) (user=kyletso job=sendgmr) by 2002:ad4:478d:: with SMTP id z13mr2168630qvy.39.1622105090294; Thu, 27 May 2021 01:44:50 -0700 (PDT) Date: Thu, 27 May 2021 16:44:17 +0800 In-Reply-To: <20210527084419.4164369-1-kyletso@google.com> Message-Id: <20210527084419.4164369-2-kyletso@google.com> Mime-Version: 1.0 References: <20210527084419.4164369-1-kyletso@google.com> X-Mailer: git-send-email 2.31.1.818.g46aad6cb9e-goog Subject: [PATCH 1/3] usb: typec: tcpm: Correct the responses in SVDM Version 2.0 DFP 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 In USB PD Spec Rev 3.1 Ver 1.0, section "6.12.5 Applicability of Structured VDM Commands", DFP is allowed and recommended to respond to Discovery Identity with ACK. And in section "6.4.4.2.5.1 Commands other than Attention", NAK should be returned only when receiving Messages with invalid fields, Messages in wrong situation, or unrecognize Messages. Still keep the original design for SVDM Version 1.0 for backward compatibilities. Fixes: 193a68011fdc ("staging: typec: tcpm: Respond to Discover Identity commands") Signed-off-by: Kyle Tso Acked-by: Heikki Krogerus --- drivers/usb/typec/tcpm/tcpm.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c index 9ce8c9af4da5..a1bf0dc5babf 100644 --- a/drivers/usb/typec/tcpm/tcpm.c +++ b/drivers/usb/typec/tcpm/tcpm.c @@ -1547,19 +1547,25 @@ static int tcpm_pd_svdm(struct tcpm_port *port, struct typec_altmode *adev, if (PD_VDO_VID(p[0]) != USB_SID_PD) break; - if (PD_VDO_SVDM_VER(p[0]) < svdm_version) + if (PD_VDO_SVDM_VER(p[0]) < svdm_version) { typec_partner_set_svdm_version(port->partner, PD_VDO_SVDM_VER(p[0])); + svdm_version = PD_VDO_SVDM_VER(p[0]); + } tcpm_ams_start(port, DISCOVER_IDENTITY); - /* 6.4.4.3.1: Only respond as UFP (device) */ - if (port->data_role == TYPEC_DEVICE && + /* + * PD2.0 Spec 6.10.3: respond with NAK as DFP (data host) + * PD3.1 Spec 6.4.4.2.5.1: respond with NAK if "invalid field" or + * "wrong configuation" or "Unrecognized" + */ + if ((port->data_role == TYPEC_DEVICE || svdm_version >= SVDM_VER_2_0) && port->nr_snk_vdo) { /* * Product Type DFP and Connector Type are not defined in SVDM * version 1.0 and shall be set to zero. */ - if (typec_get_negotiated_svdm_version(typec) < SVDM_VER_2_0) + if (svdm_version < SVDM_VER_2_0) response[1] = port->snk_vdo[0] & ~IDH_DFP_MASK & ~IDH_CONN_MASK; else From patchwork Thu May 27 08:44:18 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kyle Tso X-Patchwork-Id: 449840 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=-26.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, 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 DE985C47089 for ; Thu, 27 May 2021 08:45:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C0F57613CA for ; Thu, 27 May 2021 08:45:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235590AbhE0Iqb (ORCPT ); Thu, 27 May 2021 04:46:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54058 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235475AbhE0Iq1 (ORCPT ); Thu, 27 May 2021 04:46:27 -0400 Received: from mail-pg1-x54a.google.com (mail-pg1-x54a.google.com [IPv6:2607:f8b0:4864:20::54a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 91CE2C061574 for ; Thu, 27 May 2021 01:44:54 -0700 (PDT) Received: by mail-pg1-x54a.google.com with SMTP id v17-20020a6346510000b029021a532f226dso2515680pgk.21 for ; Thu, 27 May 2021 01:44:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=hWuYlcm+G88I6W6ZPGMYy1rv3ZPflGwOGWbdhraiZfw=; b=BeEXzIMLWyyubqRMQSd15E1pcWUNkuTOPtLuKiYOTQgFdA0zfnGbboJL/8cmsIgi00 19iffh0eS7gxKW4Nj3bu2L9aDkNTm6Y4+WGsYm9TYdXNBOcRGctBHLwCBvXFnz8kLLJW +J5V1oXppObeg+6CA4hfE5EulOxRaJEUt5faGVttw8cWT9a0AVPpMVu3pIuOZxN8OBNS 3m++sFhZG1mofeTyrQ9OQAr1+75ZBvMK0TrkV4cS/Gz/nqty/cQ0Od6R5emnfhdws3Q3 hnX3UT2z5WYw/0fl0uOpOvV/V7+/hML4xgr7Ofm1nJiie+vI3nMopwoq4kyxkrt5S8iL KCiA== X-Google-DKIM-Signature: v=1; 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Thu, 27 May 2021 01:44:54 -0700 (PDT) Date: Thu, 27 May 2021 16:44:18 +0800 In-Reply-To: <20210527084419.4164369-1-kyletso@google.com> Message-Id: <20210527084419.4164369-3-kyletso@google.com> Mime-Version: 1.0 References: <20210527084419.4164369-1-kyletso@google.com> X-Mailer: git-send-email 2.31.1.818.g46aad6cb9e-goog Subject: [PATCH 2/3] dt-bindings: connector: Add PD rev 2.0 VDO definition 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 Add the VDO definition for USB PD rev 2.0 in the bindings and define a new property snk-vdos-v1 containing legacy VDOs as the responses to the port partner which only supports PD rev 2.0. Signed-off-by: Kyle Tso --- .../bindings/connector/usb-connector.yaml | 15 ++++ include/dt-bindings/usb/pd.h | 69 ++++++++++++++++++- 2 files changed, 81 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/connector/usb-connector.yaml b/Documentation/devicetree/bindings/connector/usb-connector.yaml index 32509b98142e..92b49bc37939 100644 --- a/Documentation/devicetree/bindings/connector/usb-connector.yaml +++ b/Documentation/devicetree/bindings/connector/usb-connector.yaml @@ -149,6 +149,17 @@ properties: maxItems: 6 $ref: /schemas/types.yaml#/definitions/uint32-array + sink-vdos-v1: + description: An array of u32 with each entry, a Vendor Defined Message Object (VDO), + providing additional information corresponding to the product, the detailed bit + definitions and the order of each VDO can be found in + "USB Power Delivery Specification Revision 2.0, Version 1.3" chapter 6.4.4.3.1 Discover + Identity. User can specify the VDO array via VDO_IDH/_CERT/_PRODUCT/_CABLE/_AMA defined in + dt-bindings/usb/pd.h. + minItems: 3 + maxItems: 6 + $ref: /schemas/types.yaml#/definitions/uint32-array + op-sink-microwatt: description: Sink required operating power in microwatt, if source can't offer the power, Capability Mismatch is set. Required for power sink and @@ -207,6 +218,10 @@ properties: SNK_READY for non-pd link. type: boolean +dependencies: + sink-vdos-v1: [ 'sink-vdos' ] + sink-vdos: [ 'sink-vdos-v1' ] + required: - compatible diff --git a/include/dt-bindings/usb/pd.h b/include/dt-bindings/usb/pd.h index fef3ef65967f..9e47f9673405 100644 --- a/include/dt-bindings/usb/pd.h +++ b/include/dt-bindings/usb/pd.h @@ -106,6 +106,10 @@ * <20:16> :: Reserved, Shall be set to zero * <15:0> :: USB-IF assigned VID for this cable vendor */ + +/* PD Rev2.0 definition */ +#define IDH_PTYPE_UNDEF 0 + /* SOP Product Type (UFP) */ #define IDH_PTYPE_NOT_UFP 0 #define IDH_PTYPE_HUB 1 @@ -228,7 +232,25 @@ | ((pnum) & 0x1f)) /* - * Passive Cable VDO + * Cable VDO (for both Passive and Active Cable VDO in PD Rev2.0) + * --------- + * <31:28> :: Cable HW version + * <27:24> :: Cable FW version + * <23:20> :: Reserved, Shall be set to zero + * <19:18> :: type-C to Type-A/B/C/Captive (00b == A, 01 == B, 10 == C, 11 == Captive) + * <17> :: Reserved, Shall be set to zero + * <16:13> :: cable latency (0001 == <10ns(~1m length)) + * <12:11> :: cable termination type (11b == both ends active VCONN req) + * <10> :: SSTX1 Directionality support (0b == fixed, 1b == cfgable) + * <9> :: SSTX2 Directionality support + * <8> :: SSRX1 Directionality support + * <7> :: SSRX2 Directionality support + * <6:5> :: Vbus current handling capability (01b == 3A, 10b == 5A) + * <4> :: Vbus through cable (0b == no, 1b == yes) + * <3> :: SOP" controller present? (0b == no, 1b == yes) + * <2:0> :: USB SS Signaling support + * + * Passive Cable VDO (PD Rev3.0+) * --------- * <31:28> :: Cable HW version * <27:24> :: Cable FW version @@ -244,7 +266,7 @@ * <4:3> :: Reserved, Shall be set to zero * <2:0> :: USB highest speed * - * Active Cable VDO 1 + * Active Cable VDO 1 (PD Rev3.0+) * --------- * <31:28> :: Cable HW version * <27:24> :: Cable FW version @@ -266,7 +288,9 @@ #define CABLE_VDO_VER1_0 0 #define CABLE_VDO_VER1_3 3 -/* Connector Type */ +/* Connector Type (_ATYPE and _BTYPE are for PD Rev2.0 only) */ +#define CABLE_ATYPE 0 +#define CABLE_BTYPE 1 #define CABLE_CTYPE 2 #define CABLE_CAPTIVE 3 @@ -303,12 +327,22 @@ #define CABLE_CURR_3A 1 #define CABLE_CURR_5A 2 +/* USB SuperSpeed Signaling Support (PD Rev2.0) */ +#define CABLE_USBSS_U2_ONLY 0 +#define CABLE_USBSS_U31_GEN1 1 +#define CABLE_USBSS_U31_GEN2 2 + /* USB Highest Speed */ #define CABLE_USB2_ONLY 0 #define CABLE_USB32_GEN1 1 #define CABLE_USB32_4_GEN2 2 #define CABLE_USB4_GEN3 3 +#define VDO_CABLE(hw, fw, cbl, lat, term, tx1d, tx2d, rx1d, rx2d, cur, vps, sopp, usbss) \ + (((hw) & 0x7) << 28 | ((fw) & 0x7) << 24 | ((cbl) & 0x3) << 18 \ + | ((lat) & 0x7) << 13 | ((term) & 0x3) << 11 | (tx1d) << 10 \ + | (tx2d) << 9 | (rx1d) << 8 | (rx2d) << 7 | ((cur) & 0x3) << 5 \ + | (vps) << 4 | (sopp) << 3 | ((usbss) & 0x7)) #define VDO_PCABLE(hw, fw, ver, conn, lat, term, vbm, cur, spd) \ (((hw) & 0xf) << 28 | ((fw) & 0xf) << 24 | ((ver) & 0x7) << 21 \ | ((conn) & 0x3) << 18 | ((lat) & 0xf) << 13 | ((term) & 0x3) << 11 \ @@ -373,6 +407,35 @@ | ((hops) & 0x3) << 6 | (u2) << 5 | (u32) << 4 | (lane) << 3 \ | (iso) << 2 | (gen)) +/* + * AMA VDO (PD Rev2.0) + * --------- + * <31:28> :: Cable HW version + * <27:24> :: Cable FW version + * <23:12> :: Reserved, Shall be set to zero + * <11> :: SSTX1 Directionality support (0b == fixed, 1b == cfgable) + * <10> :: SSTX2 Directionality support + * <9> :: SSRX1 Directionality support + * <8> :: SSRX2 Directionality support + * <7:5> :: Vconn power + * <4> :: Vconn power required + * <3> :: Vbus power required + * <2:0> :: USB SS Signaling support + */ +#define VDO_AMA(hw, fw, tx1d, tx2d, rx1d, rx2d, vcpwr, vcr, vbr, usbss) \ + (((hw) & 0x7) << 28 | ((fw) & 0x7) << 24 \ + | (tx1d) << 11 | (tx2d) << 10 | (rx1d) << 9 | (rx2d) << 8 \ + | ((vcpwr) & 0x7) << 5 | (vcr) << 4 | (vbr) << 3 \ + | ((usbss) & 0x7)) + +#define PD_VDO_AMA_VCONN_REQ(vdo) (((vdo) >> 4) & 1) +#define PD_VDO_AMA_VBUS_REQ(vdo) (((vdo) >> 3) & 1) + +#define AMA_USBSS_U2_ONLY 0 +#define AMA_USBSS_U31_GEN1 1 +#define AMA_USBSS_U31_GEN2 2 +#define AMA_USBSS_BBONLY 3 + /* * VPD VDO * --------- From patchwork Thu May 27 08:44:19 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kyle Tso X-Patchwork-Id: 449254 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=-26.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, 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 7F070C4707F for ; Thu, 27 May 2021 08:45:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 63C7A613CC for ; Thu, 27 May 2021 08:45:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235605AbhE0Iqf (ORCPT ); Thu, 27 May 2021 04:46:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54074 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235594AbhE0Iqc (ORCPT ); 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d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=NqV+UHFoHvqcq/R8sYfWHsT1BHUr10auoTbMwxVa1MY=; b=kPpRdltTC1+gTzVFlIkYsgq9cSYJiqbEjY+fZHJ/Va4qEvZv+h5h/tY9HTXM0IHHRB 9Ei3meU+pMT1E84e4SnaRHIeppLlwzmWLJ0wtJH/5lc0MFUg+pIZQ33wiF687Hh7v7M4 gXQdiBYZWbIdjx0r5fwf3uktowbYZ1Pwn+RnqvfRP/0YOe9hZy4g1NKaqRerqaScuyRv +HdRKsSU9/7wkPYnbVPBprJI8EUoK5kolcyzeksyQpgyYf41+e5m9mmWNpO3j6oDZD4T ikI0YjmcnWHEfScaaUBT0aHIO1Boi16XDI2lzTQtITqYkOzC7q0Yy9rDEaMqBgbrxGbP 1s9Q== X-Gm-Message-State: AOAM530AsX6bRFEvGmeR0n6d2G0zN1C1fHSGWj7MSbCDYfGIgWTY0UE+ EujIqqfapzGUtBnFw/ToTkFz/RmOZWyd X-Google-Smtp-Source: ABdhPJwxZJ6gmdrZ26fdJ3KzSUJDVghx72sFTMFQY+TWdVvQW5dNHefeQdnQqkFqyXVZ7PhBsDpr/owQtgZ2 X-Received: from kyletso.ntc.corp.google.com ([2401:fa00:fc:202:c563:7257:f641:cbcd]) (user=kyletso job=sendgmr) by 2002:a62:1d52:0:b029:2dd:ee:1439 with SMTP id d79-20020a621d520000b02902dd00ee1439mr2646720pfd.57.1622105097999; Thu, 27 May 2021 01:44:57 -0700 (PDT) Date: Thu, 27 May 2021 16:44:19 +0800 In-Reply-To: <20210527084419.4164369-1-kyletso@google.com> Message-Id: <20210527084419.4164369-4-kyletso@google.com> Mime-Version: 1.0 References: <20210527084419.4164369-1-kyletso@google.com> X-Mailer: git-send-email 2.31.1.818.g46aad6cb9e-goog Subject: [PATCH 3/3] usb: typec: tcpm: Introduce snk_vdo_v1 for SVDM version 1.0 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 The ID Header VDO and Product VDOs defined in USB PD Spec rev 2.0 and rev 3.1 are quite different. Add an additional array snk_vdo_v1 and send it as the response to the port partner if it only supports SVDM version 1.0. Signed-off-by: Kyle Tso --- drivers/usb/typec/tcpm/tcpm.c | 40 +++++++++++++++++++++++++---------- 1 file changed, 29 insertions(+), 11 deletions(-) diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c index a1bf0dc5babf..07d2bed0a63b 100644 --- a/drivers/usb/typec/tcpm/tcpm.c +++ b/drivers/usb/typec/tcpm/tcpm.c @@ -401,6 +401,8 @@ struct tcpm_port { unsigned int nr_src_pdo; u32 snk_pdo[PDO_MAX_OBJECTS]; unsigned int nr_snk_pdo; + u32 snk_vdo_v1[VDO_MAX_OBJECTS]; + unsigned int nr_snk_vdo_v1; u32 snk_vdo[VDO_MAX_OBJECTS]; unsigned int nr_snk_vdo; @@ -1561,18 +1563,18 @@ static int tcpm_pd_svdm(struct tcpm_port *port, struct typec_altmode *adev, */ if ((port->data_role == TYPEC_DEVICE || svdm_version >= SVDM_VER_2_0) && port->nr_snk_vdo) { - /* - * Product Type DFP and Connector Type are not defined in SVDM - * version 1.0 and shall be set to zero. - */ - if (svdm_version < SVDM_VER_2_0) - response[1] = port->snk_vdo[0] & ~IDH_DFP_MASK - & ~IDH_CONN_MASK; - else + if (svdm_version < SVDM_VER_2_0) { + response[1] = port->snk_vdo_v1[0]; + for (i = 1; i < port->nr_snk_vdo_v1; i++) + response[i + 1] = port->snk_vdo_v1[i]; + rlen = port->nr_snk_vdo_v1 + 1; + + } else { response[1] = port->snk_vdo[0]; - for (i = 1; i < port->nr_snk_vdo; i++) - response[i + 1] = port->snk_vdo[i]; - rlen = port->nr_snk_vdo + 1; + for (i = 1; i < port->nr_snk_vdo; i++) + response[i + 1] = port->snk_vdo[i]; + rlen = port->nr_snk_vdo + 1; + } } break; case CMD_DISCOVER_SVID: @@ -5953,6 +5955,22 @@ static int tcpm_fw_get_caps(struct tcpm_port *port, return ret; } + /* If sink-vdos is found, sink-vdos-v1 is expected for backward compatibility. */ + if (port->nr_snk_vdo) { + ret = fwnode_property_count_u32(fwnode, "sink-vdos-v1"); + if (ret < 0) + return ret; + else if (ret == 0) + return -ENODATA; + + port->nr_snk_vdo_v1 = min(ret, VDO_MAX_OBJECTS); + ret = fwnode_property_read_u32_array(fwnode, "sink-vdos-v1", + port->snk_vdo_v1, + port->nr_snk_vdo_v1); + if (ret < 0) + return ret; + } + return 0; }