From patchwork Tue Feb 2 09:33:38 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kyle Tso X-Patchwork-Id: 12061213 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=ham 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 8759DC433DB for ; Tue, 2 Feb 2021 09:36:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 24C7E64EDE for ; Tue, 2 Feb 2021 09:36:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233018AbhBBJfu (ORCPT ); Tue, 2 Feb 2021 04:35:50 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48718 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232989AbhBBJfL (ORCPT ); Tue, 2 Feb 2021 04:35:11 -0500 Received: from mail-qv1-xf4a.google.com (mail-qv1-xf4a.google.com [IPv6:2607:f8b0:4864:20::f4a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CDA61C061354 for ; Tue, 2 Feb 2021 01:34:05 -0800 (PST) Received: by mail-qv1-xf4a.google.com with SMTP id u8so13258782qvm.5 for ; Tue, 02 Feb 2021 01:34:05 -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=fLa5TsXSBpsP57i7rTOAM7gZx7/PzEEhNrjLn4yitAU=; b=Te+W0rf8yNG7vTowb1I3yC8CWpaJzKa9KQM+asvwhnmsZkI7eVi2S9qBvEkhXafDkT AEI0HR9XBKifp8SMXqS6Ph82ux+HRRc1lc6/k0kB3xEnCDP2weHsGLQxGS11Z9ww6Guv eCpxqPYYeNCR/OYdvwI6WEk7jqOR0RDg/3AHIxot3lvf8IZZRGcz6Fbsxv/+f1UbuH8o A5ObXYTZ47DlKrHKKZeIhcPUQxlP6DRfWbBhktcAbwP5OoN46RlLrECZuiGcYpJ1bvt/ ilpjAZkThguKOJqoF01oQ204iJylDVmHgDleeXOO+zdN5PdHc+bAhpWH4st8UOMBGFjT IWDQ== 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=fLa5TsXSBpsP57i7rTOAM7gZx7/PzEEhNrjLn4yitAU=; b=o72QKXEFUwNV/tz+iZB/dDGFeywZZd+Ex8OSbyvojSWCPqnawPVpOpf/UDkDPN8Nvy KFpZn7pP4NuUpj/A2dj0S8HjLgo0KCg9LQEp8NxaDRJj1ESt1QdmNZc69vZCCUwD+YrT ayFlKDxzpnX/6byn+QmDfrUXwRhhZXLaIOCFu4nbJy1VuH1oLprfr3ksAWNpA/+C5HzX UTEUnjsMc4RR1QrrCCaNkMKyA32YlY/PomeywSQshULCH9BWOz0imu4T/+B3yzMzliV2 wY/vxe65Tr3AmmFgXeTIoOvgOjKJHeh0UGrQDPJoQhSb7Z3+2bPI0SNwaU4pQUkZm12f 18eg== X-Gm-Message-State: AOAM5306R0KNHZsZKcphPzXdssMmvJKPxHyUACfUdbBSP/tu9BHQleJ8 X8wJwyuVZOnRoymeT0PKrRjjU8b1PYhu X-Google-Smtp-Source: ABdhPJx27eBJ0eMcA/swaeyiblGIDVkN5ZbfgwV+pd6W3+1EpJaXN9L5OYcaXOGGm42MwG0tmv6pVxwx7vTc 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:a05:6214:192d:: with SMTP id es13mr11651940qvb.9.1612258445004; Tue, 02 Feb 2021 01:34:05 -0800 (PST) Date: Tue, 2 Feb 2021 17:33:38 +0800 In-Reply-To: <20210202093342.738691-1-kyletso@google.com> Message-Id: <20210202093342.738691-5-kyletso@google.com> Mime-Version: 1.0 References: <20210202093342.738691-1-kyletso@google.com> X-Mailer: git-send-email 2.30.0.365.g02bc693789-goog Subject: [PATCH v4 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 | 47 +++++++++++++++++++++++++++++------ 1 file changed, 39 insertions(+), 8 deletions(-) diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c index 0afd8ef692e8..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, 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, + 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, + 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, 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, 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), 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, 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, 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;