From patchwork Tue Sep 29 02:39:59 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: 11804851 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 11243618 for ; Tue, 29 Sep 2020 02:40:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E9352221E8 for ; Tue, 29 Sep 2020 02:40:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="eThgSYYw" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727511AbgI2Cki (ORCPT ); Mon, 28 Sep 2020 22:40:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40054 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727457AbgI2Ckb (ORCPT ); Mon, 28 Sep 2020 22:40:31 -0400 Received: from mail-qt1-x84a.google.com (mail-qt1-x84a.google.com [IPv6:2607:f8b0:4864:20::84a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 39BCAC0613CF for ; Mon, 28 Sep 2020 19:40:31 -0700 (PDT) Received: by mail-qt1-x84a.google.com with SMTP id g1so1999156qtc.22 for ; Mon, 28 Sep 2020 19:40:31 -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=+8V9XbF+nrhvOeFjlq1gqGlcRl5hrQT9omJcJW0tz7E=; b=eThgSYYws9kLpLHXJUFr8JlqfR0wyD59aDcTKSpqbsx6KIFxXcnLhU123aJufAG5WH aDXDmzpTpskIbia0MgBBXSxSbn9D49hM95Y5gcdvk5KasouU/EUxaaOkgaLoA7gLHbBZ mLFZyzCFBFplneMO5kRnVhmXU8OVM+0SxYVaiILHXuCSd5etox30tyBSlB1pyq8j7vnl p+pt0YFFe0+KCPJNLCrOm6lKk/HCz3ASuUm/CgmjIvExOL/8MBztejPq9+WfTWQp84JX EqRvZ+FPJAi8dDJwpQAygrOGlF2gYOv2HypGFKuUp3WW+ZQz0YWAss5U+aX+fjVmfCzW QSWg== 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=+8V9XbF+nrhvOeFjlq1gqGlcRl5hrQT9omJcJW0tz7E=; b=GTa/mmyLt+7lh8vXI8tcD2eZLBDnnWbZfNYFt4psH5kiD64L7cECojHQJ4jmACsn2j 4r63ezrudIvLrD8e8E/KOQCoSOaB8lHXODZCcSEp/nUQ7PDb9jxn4CDrtsxaIQ5MQE4b oElLzc5BzCbZCN7pKPMepbLDA8tL9KQlhYjhs46vsUyrr2yfqBFl3uPeihe7bK2OwMK8 NlWkXbEbrLX0PgRopvQTOUd0dtUql2My9orS7Ywck22amIzSEkvDltp7Tp5CtkYvl2Jo WhdgMfzHnd3etftolN6kdqNUIU63OD2XO8LYUV1ZnzojELfp/mp7BfLJ2WyIG3MjZH1w DMmA== X-Gm-Message-State: AOAM532798mTzyv20nQB5e3PhYFHlDdUh+7tIhIA7uN2xg/uh6Nzhg0B VOLrspPrtr/9QKkeL6iXciFUXtLNr6g= X-Google-Smtp-Source: ABdhPJzwsg7Sc8wZ0WPfTkzvJTJdAdYy3e+MUHpTHIttV5fY2N8t9NGM6qfFCPHu+ad0WPdZNkpCdjyfmhM= 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:ad4:58c7:: with SMTP id dh7mr2723471qvb.20.1601347230306; Mon, 28 Sep 2020 19:40:30 -0700 (PDT) Date: Mon, 28 Sep 2020 19:39:59 -0700 In-Reply-To: <20200929024004.244992-1-badhri@google.com> Message-Id: <20200929024004.244992-11-badhri@google.com> Mime-Version: 1.0 References: <20200929024004.244992-1-badhri@google.com> X-Mailer: git-send-email 2.28.0.709.gb0816b6eb0-goog Subject: [PATCH v9 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 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 --- 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. --- 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);