From patchwork Wed Aug 10 02:55:42 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: cy_huang X-Patchwork-Id: 596563 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3B759C3F6B0 for ; Wed, 10 Aug 2022 02:56:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230238AbiHJC4E (ORCPT ); Tue, 9 Aug 2022 22:56:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59004 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230221AbiHJC4B (ORCPT ); Tue, 9 Aug 2022 22:56:01 -0400 Received: from mail-pf1-x431.google.com (mail-pf1-x431.google.com [IPv6:2607:f8b0:4864:20::431]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 529946E882; Tue, 9 Aug 2022 19:55:59 -0700 (PDT) Received: by mail-pf1-x431.google.com with SMTP id h28so12471966pfq.11; Tue, 09 Aug 2022 19:55:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=references:in-reply-to:message-id:date:subject:cc:to:from:from:to :cc; bh=l3n0xNkM7y1LjHD6LrFxe9l1XPdXW5jtjDOQp4rcO/k=; b=lo1BruH/vdXNwPVHbqSlKdobgAf6YmMjRBWtOLpQU9Je9K7s1b7Wsa2tK+2LtAm4Ki mDfMwxoG/dO9Mzj8UGstVIY/PKtpY4CaSGj6cINFlhqdzgdipYDI95GNTkklhxZZ5jzs JQ5cmoOpcaOloYtrjLWqs/mbhgbbbNgy86TM+ywcxvzc5UzLkTv+usNv8R89Wis87+Je qt6t63W8UMSEKX1Cr0PLfqs4w3zE3KrJdIKj5S+S49NcCxLlnbmE+S4UsIDIymjtKsGT PKtXO7hv6YbyJYTWnU2InIpt57HGslzItJDZtOFiddEOo7aorPhdLXpndX7qpVzSUry+ pQ0w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=references:in-reply-to:message-id:date:subject:cc:to:from :x-gm-message-state:from:to:cc; bh=l3n0xNkM7y1LjHD6LrFxe9l1XPdXW5jtjDOQp4rcO/k=; b=dL/LDM4Jjuc3alb4QgBMO1D1LcQ2eL462QEhZtCDpSupSREv19OUxLXprWdzn/RJMi on7JImwJf6TNk0XxKhLEgHvSupwP8aA5KrLfv3MdAfR2kfKEcKi6cZ7kxzAgPKBxfIZG 8g9VbEbbjTywEbMJOj5IWtnSGtqvOVOLnc+QX0iOm/6anQ9Wo2W8raZeuMePWzz4B8kp zfmAqCHYHF/9F8NPYMqawL/qbah6gK13Pr7A89SrYS8lExiZVN1orZHtJlK4UIvSm1Kn yb1hs5W2vYRLYtaglv3v4YIKvXwYX9cCpgF2Uv6r0pjccoQ148vqFJpkEiuWNgYFCGTF I3Yg== X-Gm-Message-State: ACgBeo2A93oeGyF4w1SOQaICx5b1p8b78Z6aXM3bVXplulGJdcyf5cHK Xoj+fH+I5rH8CDT4ZUP94Dw= X-Google-Smtp-Source: AA6agR5Nsk8n2J7f6D5rnXastYfmjURoEK0IGsEPSab2NT41Qwb3scM9E6J0rmI44rT1FxMITyvIeQ== X-Received: by 2002:a05:6a00:b82:b0:52f:518f:fe6c with SMTP id g2-20020a056a000b8200b0052f518ffe6cmr11690460pfj.80.1660100158724; Tue, 09 Aug 2022 19:55:58 -0700 (PDT) Received: from localhost.localdomain ([2402:7500:577:d15f:416a:c0:aecd:5d6e]) by smtp.gmail.com with ESMTPSA id i5-20020a170902c94500b0016d1f474653sm11785654pla.52.2022.08.09.19.55.56 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Tue, 09 Aug 2022 19:55:58 -0700 (PDT) From: cy_huang To: robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, lee@kernel.org, dmitry.torokhov@gmail.com Cc: cy_huang@richtek.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-input@vger.kernel.org Subject: [PATCH v4 3/3] input: misc: rt5120: Add power key support Date: Wed, 10 Aug 2022 10:55:42 +0800 Message-Id: <1660100142-32493-4-git-send-email-u0084500@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1660100142-32493-1-git-send-email-u0084500@gmail.com> References: <1660100142-32493-1-git-send-email-u0084500@gmail.com> Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org From: ChiYuan Huang Add RT5120 PMIC power key support. Signed-off-by: ChiYuan Huang --- Since v4: - Add "Copyright" string and refine for GPL version string. Since v3: - Simplify the power key irq handler key report - Since press and release irq not needed to keep in private data, change 'press', 'release' irq as local variable only. - Fix Kconfig typo for pwrkey. --- drivers/input/misc/Kconfig | 9 +++ drivers/input/misc/Makefile | 1 + drivers/input/misc/rt5120-pwrkey.c | 109 +++++++++++++++++++++++++++++++++++++ 3 files changed, 119 insertions(+) create mode 100644 drivers/input/misc/rt5120-pwrkey.c diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig index a18ab73..92daa4d 100644 --- a/drivers/input/misc/Kconfig +++ b/drivers/input/misc/Kconfig @@ -891,6 +891,15 @@ config INPUT_SC27XX_VIBRA To compile this driver as a module, choose M here. The module will be called sc27xx_vibra. +config INPUT_RT5120_PWRKEY + tristate "RT5120 PMIC power key support" + depends on MFD_RT5120 + help + This enables support for RT5120 PMIC power key driver. + + To compile this driver as a module, choose M here. the module will + be called rt5120-pwrkey. + config INPUT_STPMIC1_ONKEY tristate "STPMIC1 PMIC Onkey support" depends on MFD_STPMIC1 diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile index 28dfc44..d1fb00e 100644 --- a/drivers/input/misc/Makefile +++ b/drivers/input/misc/Makefile @@ -69,6 +69,7 @@ obj-$(CONFIG_INPUT_RAVE_SP_PWRBUTTON) += rave-sp-pwrbutton.o obj-$(CONFIG_INPUT_RB532_BUTTON) += rb532_button.o obj-$(CONFIG_INPUT_REGULATOR_HAPTIC) += regulator-haptic.o obj-$(CONFIG_INPUT_RETU_PWRBUTTON) += retu-pwrbutton.o +obj-$(CONFIG_INPUT_RT5120_PWRKEY) += rt5120-pwrkey.o obj-$(CONFIG_INPUT_AXP20X_PEK) += axp20x-pek.o obj-$(CONFIG_INPUT_GPIO_ROTARY_ENCODER) += rotary_encoder.o obj-$(CONFIG_INPUT_RK805_PWRKEY) += rk805-pwrkey.o diff --git a/drivers/input/misc/rt5120-pwrkey.c b/drivers/input/misc/rt5120-pwrkey.c new file mode 100644 index 00000000..94d25ba --- /dev/null +++ b/drivers/input/misc/rt5120-pwrkey.c @@ -0,0 +1,109 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2022 Richtek Technology Corp. + * Author: ChiYuan Huang + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#define RT5120_REG_INTSTAT 0x1E +#define RT5120_PWRKEYSTAT_MASK BIT(7) + +struct rt5120_priv { + struct regmap *regmap; + struct input_dev *input; +}; + +static irqreturn_t rt5120_pwrkey_handler(int irq, void *devid) +{ + struct rt5120_priv *priv = devid; + unsigned int stat; + int ret; + + ret = regmap_read(priv->regmap, RT5120_REG_INTSTAT, &stat); + if (ret) + return IRQ_NONE; + + input_report_key(priv->input, KEY_POWER, + !(stat & RT5120_PWRKEYSTAT_MASK)); + input_sync(priv->input); + + return IRQ_HANDLED; +} + +static int rt5120_pwrkey_probe(struct platform_device *pdev) +{ + struct rt5120_priv *priv; + struct device *dev = &pdev->dev; + int press_irq, release_irq; + int ret; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->regmap = dev_get_regmap(dev->parent, NULL); + if (!priv->regmap) + return dev_err_probe(dev, -ENODEV, "Failed to init regmap\n"); + + press_irq = platform_get_irq_byname(pdev, "pwrkey-press"); + if (press_irq < 0) + return press_irq; + + release_irq = platform_get_irq_byname(pdev, "pwrkey-release"); + if (release_irq < 0) + return release_irq; + + /* Make input device be device resource managed */ + priv->input = devm_input_allocate_device(dev); + if (!priv->input) + return dev_err_probe(dev, -ENOMEM, + "Failed to allocate input device\n"); + + priv->input->name = "rt5120_pwrkey"; + priv->input->phys = "rt5120_pwrkey/input0"; + priv->input->id.bustype = BUS_I2C; + input_set_capability(priv->input, EV_KEY, KEY_POWER); + + ret = input_register_device(priv->input); + if (ret) + return dev_err_probe(dev, ret, + "Failed to register input device\n"); + + ret = devm_request_threaded_irq(dev, press_irq, NULL, + rt5120_pwrkey_handler, 0, + "pwrkey-press", priv); + if (ret) + return dev_err_probe(dev, ret, + "Failed to register pwrkey press irq\n"); + + return devm_request_threaded_irq(dev, release_irq, NULL, + rt5120_pwrkey_handler, 0, + "pwrkey-release", priv); +} + +static const struct of_device_id r5120_pwrkey_match_table[] = { + { .compatible = "richtek,rt5120-pwrkey" }, + {} +}; +MODULE_DEVICE_TABLE(of, r5120_pwrkey_match_table); + +static struct platform_driver rt5120_pwrkey_driver = { + .driver = { + .name = "rt5120-pwrkey", + .of_match_table = r5120_pwrkey_match_table, + }, + .probe = rt5120_pwrkey_probe, +}; +module_platform_driver(rt5120_pwrkey_driver); + +MODULE_AUTHOR("ChiYuan Huang "); +MODULE_DESCRIPTION("Richtek RT5120 power key driver"); +MODULE_LICENSE("GPL v2");