From patchwork Thu Aug 26 14:31:44 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heikki Krogerus X-Patchwork-Id: 503617 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT 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 D7F32C432BE for ; Thu, 26 Aug 2021 14:31:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BAC1560EE9 for ; Thu, 26 Aug 2021 14:31:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242829AbhHZOcm (ORCPT ); Thu, 26 Aug 2021 10:32:42 -0400 Received: from mga03.intel.com ([134.134.136.65]:40917 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242820AbhHZOcl (ORCPT ); Thu, 26 Aug 2021 10:32:41 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10088"; a="217789901" X-IronPort-AV: E=Sophos;i="5.84,353,1620716400"; d="scan'208";a="217789901" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Aug 2021 07:31:54 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.84,353,1620716400"; d="scan'208";a="598501023" Received: from black.fi.intel.com (HELO black.fi.intel.com.) ([10.237.72.28]) by fmsmga001.fm.intel.com with ESMTP; 26 Aug 2021 07:31:52 -0700 From: Heikki Krogerus To: Ulrich Huber Cc: linux-usb@vger.kernel.org Subject: [RFC PATCH 5/7] usb: typec: ucsi: Check the partner alt modes always if there is PD contract Date: Thu, 26 Aug 2021 17:31:44 +0300 Message-Id: <20210826143146.25799-6-heikki.krogerus@linux.intel.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210826143146.25799-1-heikki.krogerus@linux.intel.com> References: <20210826143146.25799-1-heikki.krogerus@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org UCSI does not tell the driver explicitly when the firmware (PPM in UCSI lingo) has actually detected the partner alternate modes, there is no specific change event for that. That's why they have to be checked with any notification that informs that PD contract with that partner has been achieved. Previously the alternate modes were checked always when the firmware (PPM) informed that something with the partner had changed, but on some platforms the EC firmware does not generate separate events for generic partner changes at all. On those platforms the EC firmware notifies the driver only about connections, or separately about the PD contract if it was not achieved soon enough after the initial connection event. Signed-off-by: Heikki Krogerus --- drivers/usb/typec/ucsi/ucsi.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c index 8af292141fe7b..188181737acf0 100644 --- a/drivers/usb/typec/ucsi/ucsi.c +++ b/drivers/usb/typec/ucsi/ucsi.c @@ -627,6 +627,7 @@ static void ucsi_pwr_opmode_change(struct ucsi_connector *con) con->rdo = con->status.request_data_obj; typec_set_pwr_opmode(con->port, TYPEC_PWR_MODE_PD); ucsi_get_src_pdos(con, 1); + ucsi_partner_task(con, ucsi_check_altmodes, 30, 0); break; case UCSI_CONSTAT_PWR_OPMODE_TYPEC1_5: con->rdo = 0; @@ -726,8 +727,6 @@ static void ucsi_partner_change(struct ucsi_connector *con) if (ret) dev_err(con->ucsi->dev, "con:%d: failed to set usb role:%d\n", con->num, u_role); - - ucsi_partner_task(con, ucsi_check_altmodes, 30, 0); } static void ucsi_handle_connector_change(struct work_struct *work) @@ -878,10 +877,15 @@ static void ucsi_handle_connector_change(struct work_struct *work) break; } - if (con->status.flags & UCSI_CONSTAT_CONNECTED) + if (con->status.flags & UCSI_CONSTAT_CONNECTED) { ucsi_register_partner(con); - else + + if (UCSI_CONSTAT_PWR_OPMODE(con->status.flags) == + UCSI_CONSTAT_PWR_OPMODE_PD) + ucsi_partner_task(con, ucsi_check_altmodes, 30, 0); + } else { ucsi_unregister_partner(con); + } ucsi_port_psy_changed(con); @@ -1244,7 +1248,7 @@ static int ucsi_register_port(struct ucsi *ucsi, int index) ret = 0; } - if (con->partner) + if (UCSI_CONSTAT_PWR_OPMODE(con->status.flags) == UCSI_CONSTAT_PWR_OPMODE_PD) ucsi_check_altmodes(con); trace_ucsi_register_port(con->num, &con->status);