From patchwork Wed Jun 28 17:37:26 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Patel, Utkarsh H" X-Patchwork-Id: 13296098 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id EA713EB64D7 for ; Wed, 28 Jun 2023 17:37:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231926AbjF1RhW (ORCPT ); Wed, 28 Jun 2023 13:37:22 -0400 Received: from mga18.intel.com ([134.134.136.126]:11724 "EHLO mga18.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231691AbjF1RhI (ORCPT ); Wed, 28 Jun 2023 13:37:08 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1687973828; x=1719509828; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=unQ9Ida9BK58eirKqqPGe4rswfOrgisjIAOxxzN5qHw=; b=MIkdC0bPqX6Qdda6i5vFl3+HucV8wNe2pQbdAwYWMPvOUp78oPAjtNpn BvaJPUYO8yx+SNGK6TnNdvVj2WlH1M1YGZRYwSf1A/38fxlLyXBzmuEkZ JASPEKr4y+9ZlvIVU/MoF6hEDKaf9ogOTI/ZC6NvWnHFkvlU3Nh1jkFlB 3zYv/9SXOnvu3App1/u+MyKH2uoc0Ot4TAke5EwPCVa+HU6juxa4iUPm0 VzFuNg4hByMcrpu1NcUZLjSONzNW8YJHh51nWJ5o8EHdgc8k6UX1rUj6G wA/xUXgeUnH2wFqO4VhBXmQW4xf6ec8mJDF3vB9vW8k3g9dHZD16DH9O1 Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10755"; a="346679451" X-IronPort-AV: E=Sophos;i="6.01,166,1684825200"; d="scan'208";a="346679451" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Jun 2023 10:37:03 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10755"; a="1047499363" X-IronPort-AV: E=Sophos;i="6.01,166,1684825200"; d="scan'208";a="1047499363" Received: from uhpatel-desk4.jf.intel.com ([10.23.15.157]) by fmsmga005.fm.intel.com with ESMTP; 28 Jun 2023 10:37:01 -0700 From: Utkarsh Patel To: linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, heikki.krogerus@linux.intel.com, pmalani@chromium.org, bleung@chromium.org Cc: Utkarsh Patel Subject: [PATCH v2 1/2] platform/chrome: cros_ec_typec: Configure Retimer cable type Date: Wed, 28 Jun 2023 10:37:26 -0700 Message-Id: <20230628173727.701140-2-utkarsh.h.patel@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230628173727.701140-1-utkarsh.h.patel@intel.com> References: <20230628173727.701140-1-utkarsh.h.patel@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Connector class driver only configure cable type active or passive. With this change it will also configure if the cable type is retimer or redriver if required by AP. This detail will be provided as a part of cable discover mode VDO. Signed-off-by: Utkarsh Patel --- Changes in v2: - Implemented use of cable discover mode vdo. - Removed adittional changes to host command. --- --- drivers/platform/chrome/cros_ec_typec.c | 33 ++++++++++++++++++++++++- 1 file changed, 32 insertions(+), 1 deletion(-) diff --git a/drivers/platform/chrome/cros_ec_typec.c b/drivers/platform/chrome/cros_ec_typec.c index 25f9767c28e8..557f396d1c00 100644 --- a/drivers/platform/chrome/cros_ec_typec.c +++ b/drivers/platform/chrome/cros_ec_typec.c @@ -406,6 +406,25 @@ static int cros_typec_usb_safe_state(struct cros_typec_port *port) return ret; } +static int cros_typec_get_cable_vdo(struct cros_typec_data *typec, int port_num, + uint16_t svid) +{ + struct cros_typec_port *port = typec->ports[port_num]; + struct list_head *head = &port->plug_mode_list; + struct cros_typec_altmode_node *node; + + list_for_each_entry(node, head, list) { + if (node->amode->svid == svid) + break; + } + + if (node->amode->svid != svid) + return 0; + + return node->amode->vdo; +} + + /* * Spoof the VDOs that were likely communicated by the partner for TBT alt * mode. @@ -416,6 +435,7 @@ static int cros_typec_enable_tbt(struct cros_typec_data *typec, { struct cros_typec_port *port = typec->ports[port_num]; struct typec_thunderbolt_data data; + uint32_t cable_vdo; int ret; if (typec->pd_ctrl_ver < 2) { @@ -442,6 +462,11 @@ static int cros_typec_enable_tbt(struct cros_typec_data *typec, data.cable_mode |= TBT_SET_CABLE_ROUNDED(pd_ctrl->cable_gen); + cable_vdo = cros_typec_get_cable_vdo(typec, port_num, USB_TYPEC_TBT_SID); + + if (cable_vdo & TBT_CABLE_RETIMER) + data.cable_mode |= TBT_CABLE_RETIMER; + /* Enter Mode VDO */ data.enter_vdo = TBT_SET_CABLE_SPEED(pd_ctrl->cable_speed); @@ -513,17 +538,23 @@ static int cros_typec_enable_usb4(struct cros_typec_data *typec, { struct cros_typec_port *port = typec->ports[port_num]; struct enter_usb_data data; + uint32_t cable_vdo; data.eudo = EUDO_USB_MODE_USB4 << EUDO_USB_MODE_SHIFT; + cable_vdo = cros_typec_get_cable_vdo(typec, port_num, USB_TYPEC_TBT_SID); + /* Cable Speed */ data.eudo |= pd_ctrl->cable_speed << EUDO_CABLE_SPEED_SHIFT; /* Cable Type */ if (pd_ctrl->control_flags & USB_PD_CTRL_OPTICAL_CABLE) data.eudo |= EUDO_CABLE_TYPE_OPTICAL << EUDO_CABLE_TYPE_SHIFT; - else if (pd_ctrl->control_flags & USB_PD_CTRL_ACTIVE_CABLE) + else if (cable_vdo & TBT_CABLE_RETIMER) data.eudo |= EUDO_CABLE_TYPE_RE_TIMER << EUDO_CABLE_TYPE_SHIFT; + else if (!(cable_vdo & TBT_CABLE_RETIMER) && + (pd_ctrl->control_flags & USB_PD_CTRL_ACTIVE_CABLE)) + data.eudo |= EUDO_CABLE_TYPE_RE_DRIVER << EUDO_CABLE_TYPE_SHIFT; data.active_link_training = !!(pd_ctrl->control_flags & USB_PD_CTRL_ACTIVE_LINK_UNIDIR);