From mboxrd@z Thu Jan 1 00:00:00 1970 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 CD009C433DB for ; Tue, 2 Feb 2021 17:17:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 96B7064F50 for ; Tue, 2 Feb 2021 17:17:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237405AbhBBRRR (ORCPT ); Tue, 2 Feb 2021 12:17:17 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50774 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236242AbhBBQUf (ORCPT ); Tue, 2 Feb 2021 11:20:35 -0500 Received: from mail-yb1-xb49.google.com (mail-yb1-xb49.google.com [IPv6:2607:f8b0:4864:20::b49]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 962B8C061355 for ; Tue, 2 Feb 2021 08:17:58 -0800 (PST) Received: by mail-yb1-xb49.google.com with SMTP id f8so21059642ybc.18 for ; Tue, 02 Feb 2021 08:17:58 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=sender:date:in-reply-to:message-id:mime-version:references:subject :from:to:cc; bh=G83UMcGfs1JwC6PuJSpXcsaU8cHWlIPK7q/f+Tkx3xA=; b=aComoEVKjRKcOCaq27ftruVqnGD0vx0k5c4Q1OZGD51yM7i164oZo1GcPFZ9UmHy66 /QlUnlp+Wk/AxUW0TXBtIrZRhf5D6GQJgPy4LDkuD928BGVY9R+b3Hjb/0gWCwOF34BY dHKQkcrJ4tfPrdKUh0pmvaAaeGifZZgtvhytxH+QQDjvZEYPuAP9yx8CQknv04yKVO7Q TwKhipAwhwNOf1aSBnynxJAgJWY8W/GRBC92kBblN2FoAgAa7WFfJLVy/eXH6yiA0i4O uvEbHX9MAhDcXhh9RCmQZmy83vlAjdxSq9giXBvhh7E88f38vShXkEDERQyGkffBWYkI POLg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=G83UMcGfs1JwC6PuJSpXcsaU8cHWlIPK7q/f+Tkx3xA=; b=gHmsFVlbtqoCdwE+wTJ71l8SVXmNow8CXWk85yzKyD4mPdwAC+degXfduDtuoikzix z5qq/ESz4PQ5aTiQiHW+6ygaX4QuDwL1Y04WrwuvTT9JUfFLcgcRlywlehST4a+6fUX9 HA5c/Htx16vh8N26kOeeO0lKen+8NLSZ9pRO6LJNuP/sbzNlBoFfX7xId+3BT3uWFzDE vTE+32+SHHTYK6nHBOwWhBgiy79Hsisbu/wp1GREdS02hmo7SnE9We5PNckvpCb0XZ+Q QcrS4VxQKP0BRdrHQZHdr6Y686rLMtX/HnHMh3T3rWAPWYSNUP6mcsn/fFwYr+RIhWuK WwkQ== X-Gm-Message-State: AOAM531iu2Q+CxaDB+6ItwVj83fwnO+zHPTg9WKp5gp1Aw90B0i7ujUt P2BnfjGVdXl1R0jZIeTO1eVo6aZ5Jw8m X-Google-Smtp-Source: ABdhPJweB8TIL1E3fQ50UJTi69BGSjmN3DLlM0XEklGGqF5SUXa2njgcW92gGBfAMbiGgf0AMHiqB1++rL6q Sender: "kyletso via sendgmr" X-Received: from kyletso.ntc.corp.google.com ([2401:fa00:fc:202:dd94:c753:a81d:c855]) (user=kyletso job=sendgmr) by 2002:a25:7a44:: with SMTP id v65mr34602514ybc.0.1612282677894; Tue, 02 Feb 2021 08:17:57 -0800 (PST) Date: Wed, 3 Feb 2021 00:17:30 +0800 In-Reply-To: <20210202161733.932215-1-kyletso@google.com> Message-Id: <20210202161733.932215-6-kyletso@google.com> Mime-Version: 1.0 References: <20210202161733.932215-1-kyletso@google.com> X-Mailer: git-send-email 2.30.0.365.g02bc693789-goog Subject: [PATCH v5 5/8] usb: typec: ucsi: Detemine common SVDM Version From: Kyle Tso To: linux@roeck-us.net, heikki.krogerus@linux.intel.com, gregkh@linuxfoundation.org, hdegoede@redhat.com, robh+dt@kernel.org Cc: badhri@google.com, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Kyle Tso Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch implements the following requirement in the Spec. PD Spec Revision 3.0 Version 2.0 + ECNs 2020-12-10 6.4.4.2.3 Structured VDM Version "The Structured VDM Version field of the Discover Identity Command sent and received during VDM discovery Shall be used to determine the lowest common Structured VDM Version supported by the Port Partners or Cable Plug and Shall continue to operate using this Specification Revision until they are Detached." Signed-off-by: Kyle Tso --- drivers/usb/typec/ucsi/displayport.c | 12 +++++++++--- drivers/usb/typec/ucsi/ucsi.c | 2 ++ 2 files changed, 11 insertions(+), 3 deletions(-) diff --git a/drivers/usb/typec/ucsi/displayport.c b/drivers/usb/typec/ucsi/displayport.c index 1d387bddefb9..b58ef26a50e0 100644 --- a/drivers/usb/typec/ucsi/displayport.c +++ b/drivers/usb/typec/ucsi/displayport.c @@ -48,6 +48,7 @@ struct ucsi_dp { static int ucsi_displayport_enter(struct typec_altmode *alt, u32 *vdo) { struct ucsi_dp *dp = typec_altmode_get_drvdata(alt); + struct typec_port *port = dp->con->port; struct ucsi *ucsi = dp->con->ucsi; u64 command; u8 cur = 0; @@ -83,7 +84,7 @@ static int ucsi_displayport_enter(struct typec_altmode *alt, u32 *vdo) * mode, and letting the alt mode driver continue. */ - dp->header = VDO(USB_TYPEC_DP_SID, 1, SVDM_VER_1_0, CMD_ENTER_MODE); + dp->header = VDO(USB_TYPEC_DP_SID, 1, typec_get_svdm_version(port), CMD_ENTER_MODE); dp->header |= VDO_OPOS(USB_TYPEC_DP_MODE); dp->header |= VDO_CMDT(CMDT_RSP_ACK); @@ -101,6 +102,7 @@ static int ucsi_displayport_enter(struct typec_altmode *alt, u32 *vdo) static int ucsi_displayport_exit(struct typec_altmode *alt) { struct ucsi_dp *dp = typec_altmode_get_drvdata(alt); + struct typec_port *port = dp->con->port; u64 command; int ret = 0; @@ -120,7 +122,7 @@ static int ucsi_displayport_exit(struct typec_altmode *alt) if (ret < 0) goto out_unlock; - dp->header = VDO(USB_TYPEC_DP_SID, 1, SVDM_VER_1_0, CMD_EXIT_MODE); + dp->header = VDO(USB_TYPEC_DP_SID, 1, typec_get_svdm_version(port), CMD_EXIT_MODE); dp->header |= VDO_OPOS(USB_TYPEC_DP_MODE); dp->header |= VDO_CMDT(CMDT_RSP_ACK); @@ -184,6 +186,7 @@ static int ucsi_displayport_vdm(struct typec_altmode *alt, u32 header, const u32 *data, int count) { struct ucsi_dp *dp = typec_altmode_get_drvdata(alt); + struct typec_port *port = dp->con->port; int cmd_type = PD_VDO_CMDT(header); int cmd = PD_VDO_CMD(header); @@ -200,7 +203,10 @@ static int ucsi_displayport_vdm(struct typec_altmode *alt, switch (cmd_type) { case CMDT_INIT: - dp->header = VDO(USB_TYPEC_DP_SID, 1, SVDM_VER_1_0, cmd); + if (PD_VDO_SVDM_VER(header) < typec_get_svdm_version(port)) + typec_set_svdm_version(port, PD_VDO_SVDM_VER(header)); + + dp->header = VDO(USB_TYPEC_DP_SID, 1, typec_get_svdm_version(port), cmd); dp->header |= VDO_OPOS(USB_TYPEC_DP_MODE); switch (cmd) { diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c index ca3f4194ad90..8c4897a7bf75 100644 --- a/drivers/usb/typec/ucsi/ucsi.c +++ b/drivers/usb/typec/ucsi/ucsi.c @@ -764,6 +764,7 @@ static void ucsi_handle_connector_change(struct work_struct *work) if (con->status.change & UCSI_CONSTAT_CONNECT_CHANGE) { typec_set_pwr_role(con->port, role); + typec_set_svdm_version(con->port, con->typec_cap.svdm_version); switch (UCSI_CONSTAT_PARTNER_TYPE(con->status.flags)) { case UCSI_CONSTAT_PARTNER_TYPE_UFP: @@ -1052,6 +1053,7 @@ static int ucsi_register_port(struct ucsi *ucsi, int index) cap->revision = ucsi->cap.typec_version; cap->pd_revision = ucsi->cap.pd_version; + cap->svdm_version = SVDM_VER_2_0; cap->prefer_role = TYPEC_NO_PREFERRED_ROLE; if (con->cap.op_mode & UCSI_CONCAP_OPMODE_AUDIO_ACCESSORY) -- 2.30.0.365.g02bc693789-goog