From patchwork Tue Feb 26 15:04:37 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Artur Rojek X-Patchwork-Id: 10830469 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4485D1399 for ; Tue, 26 Feb 2019 15:04:18 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 89C5F2A4BB for ; Tue, 26 Feb 2019 15:04:12 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7DD722A4E0; Tue, 26 Feb 2019 15:04:12 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 166E72A4BB for ; Tue, 26 Feb 2019 15:04:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726602AbfBZPEL (ORCPT ); Tue, 26 Feb 2019 10:04:11 -0500 Received: from relay1-d.mail.gandi.net ([217.70.183.193]:55875 "EHLO relay1-d.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726151AbfBZPEL (ORCPT ); Tue, 26 Feb 2019 10:04:11 -0500 X-Originating-IP: 91.192.165.7 Received: from pc.localdomain (unknown [91.192.165.7]) (Authenticated sender: contact@artur-rojek.eu) by relay1-d.mail.gandi.net (Postfix) with ESMTPSA id 0633B240003; Tue, 26 Feb 2019 15:04:06 +0000 (UTC) From: Artur Rojek To: Sebastian Reichel , Rob Herring , Mark Rutland Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Paul Cercueil , Artur Rojek Subject: [PATCH v2 2/2] power: supply: gpio-charger: Add support for charger status. Date: Tue, 26 Feb 2019 16:04:37 +0100 Message-Id: <20190226150437.3704-2-contact@artur-rojek.eu> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190226150437.3704-1-contact@artur-rojek.eu> References: <20190226150437.3704-1-contact@artur-rojek.eu> MIME-Version: 1.0 Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Introduce optional support of POWER_SUPPLY_PROP_STATUS for chargers which provide charging status GPIO. Signed-off-by: Artur Rojek --- Changes: v2: no change drivers/power/supply/gpio-charger.c | 53 +++++++++++++++++++++++------ 1 file changed, 42 insertions(+), 11 deletions(-) diff --git a/drivers/power/supply/gpio-charger.c b/drivers/power/supply/gpio-charger.c index 7e4f11d5a230..ebe986f09472 100644 --- a/drivers/power/supply/gpio-charger.c +++ b/drivers/power/supply/gpio-charger.c @@ -29,11 +29,13 @@ struct gpio_charger { unsigned int irq; + unsigned int status_irq; bool wakeup_enabled; struct power_supply *charger; struct power_supply_desc charger_desc; struct gpio_desc *gpiod; + struct gpio_desc *status; }; static irqreturn_t gpio_charger_irq(int irq, void *devid) @@ -59,6 +61,12 @@ static int gpio_charger_get_property(struct power_supply *psy, case POWER_SUPPLY_PROP_ONLINE: val->intval = gpiod_get_value_cansleep(gpio_charger->gpiod); break; + case POWER_SUPPLY_PROP_STATUS: + if (gpiod_get_value_cansleep(gpio_charger->status)) + val->intval = POWER_SUPPLY_STATUS_CHARGING; + else + val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING; + break; default: return -EINVAL; } @@ -93,8 +101,29 @@ static enum power_supply_type gpio_charger_get_type(struct device *dev) return POWER_SUPPLY_TYPE_UNKNOWN; } +static int gpio_charger_get_irq(struct device *dev, void *dev_id, + struct gpio_desc *gpio) +{ + int ret, irq = gpiod_to_irq(gpio); + + if (irq > 0) { + ret = devm_request_any_context_irq(dev, irq, gpio_charger_irq, + IRQF_TRIGGER_RISING | + IRQF_TRIGGER_FALLING, + dev_name(dev), + dev_id); + if (ret < 0) { + dev_warn(dev, "Failed to request irq: %d\n", ret); + irq = 0; + } + } + + return irq; +} + static enum power_supply_property gpio_charger_properties[] = { POWER_SUPPLY_PROP_ONLINE, + POWER_SUPPLY_PROP_STATUS /* Must always be last in the array. */ }; static int gpio_charger_probe(struct platform_device *pdev) @@ -105,7 +134,7 @@ static int gpio_charger_probe(struct platform_device *pdev) struct gpio_charger *gpio_charger; struct power_supply_desc *charger_desc; unsigned long flags; - int irq, ret; + int ret; if (!pdata && !dev->of_node) { dev_err(dev, "No platform data\n"); @@ -151,9 +180,16 @@ static int gpio_charger_probe(struct platform_device *pdev) return PTR_ERR(gpio_charger->gpiod); } + gpio_charger->status = devm_gpiod_get_optional(dev, "status", GPIOD_IN); + if (IS_ERR(gpio_charger->status)) + return PTR_ERR(gpio_charger->status); + charger_desc = &gpio_charger->charger_desc; charger_desc->properties = gpio_charger_properties; charger_desc->num_properties = ARRAY_SIZE(gpio_charger_properties); + /* Remove POWER_SUPPLY_PROP_STATUS from the supported properties. */ + if (!gpio_charger->status) + charger_desc->num_properties -= 1; charger_desc->get_property = gpio_charger_get_property; psy_cfg.of_node = dev->of_node; @@ -180,16 +216,11 @@ static int gpio_charger_probe(struct platform_device *pdev) return ret; } - irq = gpiod_to_irq(gpio_charger->gpiod); - if (irq > 0) { - ret = devm_request_any_context_irq(dev, irq, gpio_charger_irq, - IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, - dev_name(dev), gpio_charger->charger); - if (ret < 0) - dev_warn(dev, "Failed to request irq: %d\n", ret); - else - gpio_charger->irq = irq; - } + gpio_charger->irq = gpio_charger_get_irq(dev, gpio_charger->charger, + gpio_charger->gpiod); + gpio_charger->status_irq = gpio_charger_get_irq(dev, + gpio_charger->charger, + gpio_charger->status); platform_set_drvdata(pdev, gpio_charger);