From patchwork Thu Oct 8 06:15:51 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Badhri Jagan Sridharan X-Patchwork-Id: 11822223 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 87159139F for ; Thu, 8 Oct 2020 06:16:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6512720782 for ; Thu, 8 Oct 2020 06:16:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="ECVBCFHo" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728883AbgJHGQs (ORCPT ); Thu, 8 Oct 2020 02:16:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36792 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728600AbgJHGQZ (ORCPT ); Thu, 8 Oct 2020 02:16:25 -0400 Received: from mail-pf1-x449.google.com (mail-pf1-x449.google.com [IPv6:2607:f8b0:4864:20::449]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B98EAC0613DF for ; Wed, 7 Oct 2020 23:16:23 -0700 (PDT) Received: by mail-pf1-x449.google.com with SMTP id a16so3063098pfk.2 for ; Wed, 07 Oct 2020 23:16:23 -0700 (PDT) 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=IvjkXzvW+6lNlW1+WxkRnhzLSIktZGiqYABylT0P1Jw=; b=ECVBCFHoGJFmlpmlKxY54GiGeVoQi6NcJEP/nSDJkt2B6grDRwwJGVDCa0/LgBWVIN zn3PmJb0jK4lLns5VDA6CDyZZiIy76K5gxtplBJjT+t0x20Vzl2/OuMwwPuMlrJfHzC3 na1Ihx/iD9EBZF54ppUOafLfUg1+coxmJrS5sdHLZ4VlErLuxMfw8ZpUHC78jfcT9bYu UlwUJnUoltWqbrZorRJLBggOsSnavm13Yi1tSLHhxI5qRV37U7JtrNdbCouaEBuAeucq 3RcR2MJ0QMToN5dgsg1RHrTMd8y2MWrcund/qlE4TFVRfKsFAdaXkF6ClR+Hygfylov+ xfgg== 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=IvjkXzvW+6lNlW1+WxkRnhzLSIktZGiqYABylT0P1Jw=; b=mjS4yWNth2mTkEhXPQVq0vbdHeBZLXvRmBB9bogg3Z5UerpF9M1vujbcUHnVlyQK6R o+4QzEUvzOql9jFCIEcspjSIurgxXqgBSC+jKw7d2Ea1KFZgmyWycZcw3x02Myi6YvWG LD6EsnpNJ9uifNLEbS3iuKngDt6g3AKp3+gpR0hHI6Opl4hzaKyrsOe5/UciZAP6LMuZ Qy3gF+a2sMLyLCEB2/nRv/ZzlSafWvYsDlCP0ZpkLzgtS8LjRdruRwICAJlD9OXI/q/z 9jWkdE4ccABaFtu2k7qlhFs9RPeDIV7GxaN7QDMB2MzhPPkcqBg/VNOlS/asRhlH5HUk jNbg== X-Gm-Message-State: AOAM532JeQ10KtYj3bccYvHKF0ODFZbhUGBgNPUIeCqPes2/9PWvWIE0 eJCl2NVBA4QCUTbuyGM/FfN2C/09wrU= X-Google-Smtp-Source: ABdhPJy9elM1FPyXKazUGzgY9O12LDmXbvBYh2mrZEhM4EuaT853sVF3jhlNBHpNw/AT77Zg5Yvy7W4Gzyg= Sender: "badhri via sendgmr" X-Received: from badhri.mtv.corp.google.com ([2620:15c:211:1:f292:1cff:fee0:66cf]) (user=badhri job=sendgmr) by 2002:a62:1414:0:b029:152:44af:42e with SMTP id 20-20020a6214140000b029015244af042emr6108924pfu.66.1602137783217; Wed, 07 Oct 2020 23:16:23 -0700 (PDT) Date: Wed, 7 Oct 2020 23:15:51 -0700 In-Reply-To: <20201008061556.1402293-1-badhri@google.com> Message-Id: <20201008061556.1402293-11-badhri@google.com> Mime-Version: 1.0 References: <20201008061556.1402293-1-badhri@google.com> X-Mailer: git-send-email 2.28.0.806.g8561365e88-goog Subject: [PATCH v10 10/15] usb: typec: tcpci: frs sourcing vbus callback From: Badhri Jagan Sridharan To: Guenter Roeck , Heikki Krogerus , Greg Kroah-Hartman , Rob Herring , Lee Jones , Mark Brown , Maxime Ripard , Alexandre Belloni , Thierry Reding , Prashant Malani , Badhri Jagan Sridharan Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, Amelie Delaunay Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org During FRS hardware autonomously starts to source vbus. Provide callback to perform chip specific operations. Signed-off-by: Badhri Jagan Sridharan Reviewed-by: Heikki Krogerus --- v9 is the first version of this patch in the series. Added to fix occasional bug of vbus turning back on when disconnecting the FRS accessory after disconnect. No changes since v9. --- drivers/usb/typec/tcpm/tcpci.c | 9 +++++++++ drivers/usb/typec/tcpm/tcpci.h | 4 ++++ 2 files changed, 13 insertions(+) diff --git a/drivers/usb/typec/tcpm/tcpci.c b/drivers/usb/typec/tcpm/tcpci.c index f9f0af64da5f..f91688e43991 100644 --- a/drivers/usb/typec/tcpm/tcpci.c +++ b/drivers/usb/typec/tcpm/tcpci.c @@ -284,6 +284,14 @@ static int tcpci_enable_frs(struct tcpc_dev *dev, bool enable) return ret; } +static void tcpci_frs_sourcing_vbus(struct tcpc_dev *dev) +{ + struct tcpci *tcpci = tcpc_to_tcpci(dev); + + if (tcpci->data->frs_sourcing_vbus) + tcpci->data->frs_sourcing_vbus(tcpci, tcpci->data); +} + static int tcpci_set_bist_data(struct tcpc_dev *tcpc, bool enable) { struct tcpci *tcpci = tcpc_to_tcpci(tcpc); @@ -628,6 +636,7 @@ struct tcpci *tcpci_register_port(struct device *dev, struct tcpci_data *data) tcpci->tcpc.pd_transmit = tcpci_pd_transmit; tcpci->tcpc.set_bist_data = tcpci_set_bist_data; tcpci->tcpc.enable_frs = tcpci_enable_frs; + tcpci->tcpc.frs_sourcing_vbus = tcpci_frs_sourcing_vbus; err = tcpci_parse_config(tcpci); if (err < 0) diff --git a/drivers/usb/typec/tcpm/tcpci.h b/drivers/usb/typec/tcpm/tcpci.h index 5ef07a56d67a..b418fe11b527 100644 --- a/drivers/usb/typec/tcpm/tcpci.h +++ b/drivers/usb/typec/tcpm/tcpci.h @@ -143,6 +143,9 @@ /* * @TX_BUF_BYTE_x_hidden * optional; Set when TX_BUF_BYTE_x can only be accessed through I2C_WRITE_BYTE_COUNT. + * @frs_sourcing_vbus: + * Optional; Callback to perform chip specific operations when FRS + * is sourcing vbus. */ struct tcpci; struct tcpci_data { @@ -154,6 +157,7 @@ struct tcpci_data { int (*start_drp_toggling)(struct tcpci *tcpci, struct tcpci_data *data, enum typec_cc_status cc); int (*set_vbus)(struct tcpci *tcpci, struct tcpci_data *data, bool source, bool sink); + void (*frs_sourcing_vbus)(struct tcpci *tcpci, struct tcpci_data *data); }; struct tcpci *tcpci_register_port(struct device *dev, struct tcpci_data *data);