From patchwork Tue Feb 2 16:17:29 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kyle Tso X-Patchwork-Id: 12062391 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 23195C433DB for ; Tue, 2 Feb 2021 17:20:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D88F964F8D for ; Tue, 2 Feb 2021 17:20:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236832AbhBBRUO (ORCPT ); Tue, 2 Feb 2021 12:20:14 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50770 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236234AbhBBQUc (ORCPT ); Tue, 2 Feb 2021 11:20:32 -0500 Received: from mail-yb1-xb4a.google.com (mail-yb1-xb4a.google.com [IPv6:2607:f8b0:4864:20::b4a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B306CC061351 for ; Tue, 2 Feb 2021 08:17:54 -0800 (PST) Received: by mail-yb1-xb4a.google.com with SMTP id l10so24531361ybt.6 for ; Tue, 02 Feb 2021 08:17:54 -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=QQFE5jwkjJ77NThauqkBipHFY85tQdjTEdZy4SSPTx0=; b=vweDA2y4OSm1/oa4+na9gLHDLog8tG9XQYK7sRC2mFQBRUKR6XyvD6HsbEVqmveYBy bbevrSI/Odv48qP97t6WMJ/p0bVDX5QwtXBWjmuNZt3mgnXnuae0tj5ggSTcubfghVoo WZ/7nHD3jfOzD0GQTAJzUR3lrOOUg4Qx/OQnjW6Qqxva0pEwtK6LTXD1fiwlBEMiW2hx YUVzYCT8KhbPbcuzmQNpiShLtK3uvm2vsGoVApFsS7yiCzvrWIIVOr6xYA9/zKQ3uF6t o4cUViMsHClJ2Moi1l2DTYcf7XtYf6GWvt+DukDo55V8uGWHMXck3PND8U9jwjvAI5De 1fjA== 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=QQFE5jwkjJ77NThauqkBipHFY85tQdjTEdZy4SSPTx0=; b=okau13LYyd3vMouSLfNbecZUzQ3S2iTCmSJJ4sv/QYgmyyFQdksbWq+TQaR9LETe3w jG/UFI4mjgBQW1JycH2w6x+2PQ+UfhRQ9DFx+BWASPk4BXbp852OoPKhuU4aXN9dEQU5 PbkP8lkrd+KWsWINXSXNWnTmlxxjn2uSItsQsfAHn8u/tE7L8FR2HPnjlsn3PujXJ/ad /4nRKqK1vFhlvrp6iZyWpS6ZwAa7brRic3Ew3RHeS8nRj0aBCSrCgEP2e9OxzpG0QTFn pqr9Ez795wOzSw8v/cpmpcdNsAPlof6IC4GJ86fDZ4wvRIQ7Vcio4dA0HBsAntzEj7oE vS9w== X-Gm-Message-State: AOAM53184PI2wjezLzD/qNfFBYfG5kwsAS2mSySIUtc4FAIafE+h0tYW ZNvtZs9Mbufyj2qQX2th6yzNn31IwP+4 X-Google-Smtp-Source: ABdhPJxttsh9DIV/8Dg++ZL+LOi3ANrU/ZR4tnXWVoFRNaOpLNrLBeVt+xscj2NXJlG11ZdXcBbBjdZXiHHe 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:bb12:: with SMTP id z18mr34297721ybg.488.1612282673969; Tue, 02 Feb 2021 08:17:53 -0800 (PST) Date: Wed, 3 Feb 2021 00:17:29 +0800 In-Reply-To: <20210202161733.932215-1-kyletso@google.com> Message-Id: <20210202161733.932215-5-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 4/8] usb: typec: tcpm: 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 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org 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." Also clear the fields newly defined in SVDM version 2.0 for compatibilities. Signed-off-by: Kyle Tso --- drivers/usb/typec/tcpm/tcpm.c | 49 ++++++++++++++++++++++++++++------- 1 file changed, 40 insertions(+), 9 deletions(-) diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c index 4b4cd3c585f4..979b7ee6473c 100644 --- a/drivers/usb/typec/tcpm/tcpm.c +++ b/drivers/usb/typec/tcpm/tcpm.c @@ -1475,6 +1475,7 @@ static int tcpm_pd_svdm(struct tcpm_port *port, struct typec_altmode *adev, const u32 *p, int cnt, u32 *response, enum adev_actions *adev_action) { + struct typec_port *typec = port->typec_port; struct typec_altmode *pdev; struct pd_mode_data *modep; int rlen = 0; @@ -1500,10 +1501,21 @@ 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]) < typec_get_svdm_version(typec)) + typec_set_svdm_version(typec, PD_VDO_SVDM_VER(p[0])); /* 6.4.4.3.1: Only respond as UFP (device) */ if (port->data_role == TYPEC_DEVICE && port->nr_snk_vdo) { - for (i = 0; i < port->nr_snk_vdo; i++) + /* + * Product Type DFP and Connector Type are not defined in SVDM + * version 1.0 and shall be set to zero. + */ + if (typec_get_svdm_version(typec) < SVDM_VER_2_0) + response[1] = port->snk_vdo[0] & ~IDH_DFP_MASK + & ~IDH_CONN_MASK; + 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; } @@ -1532,6 +1544,8 @@ static int tcpm_pd_svdm(struct tcpm_port *port, struct typec_altmode *adev, response[0] = p[0] | VDO_CMDT(CMDT_RSP_BUSY); rlen = 1; } + response[0] = (response[0] & ~VDO_SVDM_VERS_MASK) | + (VDO_SVDM_VERS(typec_get_svdm_version(typec))); break; case CMDT_RSP_ACK: /* silently drop message if we are not connected */ @@ -1542,19 +1556,23 @@ static int tcpm_pd_svdm(struct tcpm_port *port, struct typec_altmode *adev, switch (cmd) { case CMD_DISCOVER_IDENT: + if (PD_VDO_SVDM_VER(p[0]) < typec_get_svdm_version(typec)) + typec_set_svdm_version(typec, PD_VDO_SVDM_VER(p[0])); /* 6.4.4.3.1 */ svdm_consume_identity(port, p, cnt); - response[0] = VDO(USB_SID_PD, 1, SVDM_VER_1_0, CMD_DISCOVER_SVID); + response[0] = VDO(USB_SID_PD, 1, typec_get_svdm_version(typec), + CMD_DISCOVER_SVID); rlen = 1; break; case CMD_DISCOVER_SVID: /* 6.4.4.3.2 */ if (svdm_consume_svids(port, p, cnt)) { - response[0] = VDO(USB_SID_PD, 1, SVDM_VER_1_0, + response[0] = VDO(USB_SID_PD, 1, typec_get_svdm_version(typec), CMD_DISCOVER_SVID); rlen = 1; } else if (modep->nsvids && supports_modal(port)) { - response[0] = VDO(modep->svids[0], 1, SVDM_VER_1_0, + response[0] = VDO(modep->svids[0], 1, + typec_get_svdm_version(typec), CMD_DISCOVER_MODES); rlen = 1; } @@ -1565,7 +1583,8 @@ static int tcpm_pd_svdm(struct tcpm_port *port, struct typec_altmode *adev, modep->svid_index++; if (modep->svid_index < modep->nsvids) { u16 svid = modep->svids[modep->svid_index]; - response[0] = VDO(svid, 1, SVDM_VER_1_0, CMD_DISCOVER_MODES); + response[0] = VDO(svid, 1, typec_get_svdm_version(typec), + CMD_DISCOVER_MODES); rlen = 1; } else { tcpm_register_partner_altmodes(port); @@ -1592,6 +1611,8 @@ static int tcpm_pd_svdm(struct tcpm_port *port, struct typec_altmode *adev, /* Unrecognized SVDM */ response[0] = p[0] | VDO_CMDT(CMDT_RSP_NAK); rlen = 1; + response[0] = (response[0] & ~VDO_SVDM_VERS_MASK) | + (VDO_SVDM_VERS(typec_get_svdm_version(typec))); break; } break; @@ -1611,6 +1632,8 @@ static int tcpm_pd_svdm(struct tcpm_port *port, struct typec_altmode *adev, /* Unrecognized SVDM */ response[0] = p[0] | VDO_CMDT(CMDT_RSP_NAK); rlen = 1; + response[0] = (response[0] & ~VDO_SVDM_VERS_MASK) | + (VDO_SVDM_VERS(typec_get_svdm_version(typec))); break; } port->vdm_sm_running = false; @@ -1618,6 +1641,8 @@ static int tcpm_pd_svdm(struct tcpm_port *port, struct typec_altmode *adev, default: response[0] = p[0] | VDO_CMDT(CMDT_RSP_NAK); rlen = 1; + response[0] = (response[0] & ~VDO_SVDM_VERS_MASK) | + (VDO_SVDM_VERS(typec_get_svdm_version(typec))); port->vdm_sm_running = false; break; } @@ -1695,7 +1720,9 @@ static void tcpm_handle_vdm_request(struct tcpm_port *port, break; case ADEV_QUEUE_VDM_SEND_EXIT_MODE_ON_FAIL: if (typec_altmode_vdm(adev, p[0], &p[1], cnt)) { - response[0] = VDO(adev->svid, 1, SVDM_VER_1_0, CMD_EXIT_MODE); + response[0] = VDO(adev->svid, 1, + typec_get_svdm_version(port->typec_port), + CMD_EXIT_MODE); response[0] |= VDO_OPOS(adev->mode); rlen = 1; } @@ -1729,7 +1756,8 @@ static void tcpm_send_vdm(struct tcpm_port *port, u32 vid, int cmd, /* set VDM header with VID & CMD */ header = VDO(vid, ((vid & USB_SID_PD) == USB_SID_PD) ? - 1 : (PD_VDO_CMD(cmd) <= CMD_ATTENTION), SVDM_VER_1_0, cmd); + 1 : (PD_VDO_CMD(cmd) <= CMD_ATTENTION), + typec_get_svdm_version(port->typec_port), cmd); tcpm_queue_vdm(port, header, data, count); } @@ -2024,7 +2052,8 @@ static int tcpm_altmode_enter(struct typec_altmode *altmode, u32 *vdo) struct tcpm_port *port = typec_altmode_get_drvdata(altmode); u32 header; - header = VDO(altmode->svid, vdo ? 2 : 1, SVDM_VER_1_0, CMD_ENTER_MODE); + header = VDO(altmode->svid, vdo ? 2 : 1, typec_get_svdm_version(port->typec_port), + CMD_ENTER_MODE); header |= VDO_OPOS(altmode->mode); tcpm_queue_vdm_unlocked(port, header, vdo, vdo ? 1 : 0); @@ -2036,7 +2065,7 @@ static int tcpm_altmode_exit(struct typec_altmode *altmode) struct tcpm_port *port = typec_altmode_get_drvdata(altmode); u32 header; - header = VDO(altmode->svid, 1, SVDM_VER_1_0, CMD_EXIT_MODE); + header = VDO(altmode->svid, 1, typec_get_svdm_version(port->typec_port), CMD_EXIT_MODE); header |= VDO_OPOS(altmode->mode); tcpm_queue_vdm_unlocked(port, header, NULL, 0); @@ -3445,6 +3474,7 @@ static void tcpm_reset_port(struct tcpm_port *port) port->attached = false; port->pd_capable = false; port->pps_data.supported = false; + typec_set_svdm_version(port->typec_port, port->typec_caps.svdm_version); /* * First Rx ID should be 0; set this to a sentinel of -1 so that @@ -5952,6 +5982,7 @@ struct tcpm_port *tcpm_register_port(struct device *dev, struct tcpc_dev *tcpc) port->typec_caps.fwnode = tcpc->fwnode; port->typec_caps.revision = 0x0120; /* Type-C spec release 1.2 */ port->typec_caps.pd_revision = 0x0300; /* USB-PD spec release 3.0 */ + port->typec_caps.svdm_version = SVDM_VER_2_0; port->typec_caps.driver_data = port; port->typec_caps.ops = &tcpm_ops; port->typec_caps.orientation_aware = 1;