From mboxrd@z Thu Jan 1 00:00:00 1970 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=-6.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS 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 6A2E3C32771 for ; Tue, 7 Jan 2020 00:29:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0C3A22075A for ; Tue, 7 Jan 2020 00:29:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=crapouillou.net header.i=@crapouillou.net header.b="IaTVRP+Z" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727332AbgAGA3Y (ORCPT ); Mon, 6 Jan 2020 19:29:24 -0500 Received: from outils.crapouillou.net ([89.234.176.41]:39074 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727163AbgAGA3Y (ORCPT ); Mon, 6 Jan 2020 19:29:24 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1578356962; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:references; bh=nDpaTHAJN6PnaV/NUe5XTLxwtko/PI3XInMzN1gqSog=; b=IaTVRP+ZrStoqzsgKqnWJM4j6qwUryJ+LTPdbaYmvcUYcFtj4SnzP1wZdS7bzYGWwiDdAn OoYZJoGT2Ue72mMspsDx52CUii50p5BpULeOr+s5TZmHiqsf8EEkWayk9ba0j91xuXOj4k +eD9JQroJMh606esKCzzJKnk3Cn+/5k= From: Paul Cercueil To: Greg Kroah-Hartman Cc: Chunfeng Yun , od@zcrc.me, linux-usb@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Paul Cercueil Subject: [PATCH] usb: common: usb-conn-gpio: Register charger Date: Tue, 7 Jan 2020 01:29:01 +0100 Message-Id: <20200107002901.940297-1-paul@crapouillou.net> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Register a power supply charger, whose online state depends on whether the USB role is set to device or not. Signed-off-by: Paul Cercueil --- drivers/usb/common/usb-conn-gpio.c | 45 ++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) diff --git a/drivers/usb/common/usb-conn-gpio.c b/drivers/usb/common/usb-conn-gpio.c index ed204cbb63ea..08a411388d3c 100644 --- a/drivers/usb/common/usb-conn-gpio.c +++ b/drivers/usb/common/usb-conn-gpio.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include @@ -38,6 +39,9 @@ struct usb_conn_info { struct gpio_desc *vbus_gpiod; int id_irq; int vbus_irq; + + struct power_supply_desc desc; + struct power_supply *charger; }; /** @@ -98,6 +102,8 @@ static void usb_conn_detect_cable(struct work_struct *work) ret = regulator_enable(info->vbus); if (ret) dev_err(info->dev, "enable vbus regulator failed\n"); + } else { + power_supply_changed(info->charger); } info->last_role = role; @@ -121,10 +127,35 @@ static irqreturn_t usb_conn_isr(int irq, void *dev_id) return IRQ_HANDLED; } +static enum power_supply_property usb_charger_properties[] = { + POWER_SUPPLY_PROP_ONLINE, +}; + +static int usb_charger_get_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct usb_conn_info *info = power_supply_get_drvdata(psy); + + switch (psp) { + case POWER_SUPPLY_PROP_ONLINE: + val->intval = info->last_role == USB_ROLE_DEVICE; + break; + default: + return -EINVAL; + } + + return 0; +} + static int usb_conn_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; + struct power_supply_desc *desc; struct usb_conn_info *info; + struct power_supply_config cfg = { + .of_node = dev->of_node, + }; int ret = 0; info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL); @@ -203,6 +234,20 @@ static int usb_conn_probe(struct platform_device *pdev) } } + desc = &info->desc; + desc->name = "usb-charger"; + desc->properties = usb_charger_properties; + desc->num_properties = ARRAY_SIZE(usb_charger_properties); + desc->get_property = usb_charger_get_property; + desc->type = POWER_SUPPLY_TYPE_USB; + cfg.drv_data = info; + + info->charger = devm_power_supply_register(dev, desc, &cfg); + if (IS_ERR(info->charger)) { + dev_err(dev, "Unable to register charger"); + return PTR_ERR(info->charger); + } + platform_set_drvdata(pdev, info); /* Perform initial detection */ -- 2.24.1