From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-yx1-f45.google.com (mail-yx1-f45.google.com [74.125.224.45]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0048E48094F for ; Wed, 17 Jun 2026 15:04:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.224.45 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781708648; cv=none; b=boC4XgNJXxSOTtzrmQmTW1GSKvUvb1yrml6C0U5thU5yiKxIiGWDXrnX8xM/3e+Rey29ofN9LQpYFE125U0wpryu2Ypa3y2bzy/INYdIjdfcmD5TdFJ29WTFwU5IwGH/oxQM4IPi4bz4Oakb6JTEKQfDEgI9nkaYZGnxvbnsWJU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781708648; c=relaxed/simple; bh=zNOpD/wRzwKVNbxBSxwV1LjW6Oj5E/ebK6eNpQ3MYuc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=b90/PR4d975NHeatHppXObhv7AMXEVvXUeJGzX9RoCPOpl1jR10uVsqUcKQqNlRM7sADOjIItQAn5e7R9X4sfM3HGuYC9DxswB8K4iiu6xbJhvafmTpxRSXB8vQ8f2jD+yi47/O8Xa5RD3zQuJ0nJ2xHPjPB3Z1NwTg8xRe2ePk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=C7vEVCVS; arc=none smtp.client-ip=74.125.224.45 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="C7vEVCVS" Received: by mail-yx1-f45.google.com with SMTP id 956f58d0204a3-662dd616cdbso422623d50.1 for ; Wed, 17 Jun 2026 08:04:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1781708646; x=1782313446; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=HFRBlbr8wUbT3bmJyvww3JgD2moWprJ0/TvqFpmrkVI=; b=C7vEVCVS7lHL71elNZpQBsrOwGi8HjQj+BOz1EhuFdE+hIufIyQje5z8Etk1lC3MrY 7VWY0P7ZV2SNLD2NqvYbaD0FnujHRGYZXWo8k0biN0U8o6ydFUDw/vSz5FdQIsSffSdY 8VmAx0j75yFU2zBby/0r+pn5oB7jv2icyvRQfHPLiZuyIZJ+dWCPlc6mFyPpRmW8BLDs ieRTcG2AUvMtOUUWkWNBPWYW4SwA9ug3cUs5iDov/YFEcy+DYP+RRqT8ckPGtTI12aoU R+WFcWhRTKMPJaWUfvUqUcSxQ6kRaT46TdKcuEcrmNrVs1DI0DOShpqOhd7Qe4x0JVE8 5nHg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1781708646; x=1782313446; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=HFRBlbr8wUbT3bmJyvww3JgD2moWprJ0/TvqFpmrkVI=; b=Nw2YOoKIC80PoOJtiZdOPfuHr0zXcwr5cEo/y2bix80c0nmMJ4nYmumFRpGEvbvmQQ KxfhWW8Q/NTcVptloHC8tItGd7LWbP94IlzU8Xl6t8RfAbzytxHpS6xw34zYued9LO7O hMyazLeZtrpJUn1i5QmOgA1Y9wMKrr2N/FIeH3uwlYiXfkH4gVg1bUWeaDj937U3hpXS e5/uTTID+AiBIZ+m/rsQfw1BRv5y2O/88BG7a9UVKYXDMouSekstQn2lQeVIiMGLiEc4 3aDj7P56fG+zwnqS0IffK2cB+MxscFMGakta1vUAPO9xKR1RKJWrrfSQ92+MH9imEFcG +3yQ== X-Forwarded-Encrypted: i=1; AFNElJ8UnY9V8dC97GTW0cmmychj3+76b0/bUMO3v1viTVoVbLUtvCsNP8rNWUdRXwhpsMXDphjY+mlCPIbt@vger.kernel.org X-Gm-Message-State: AOJu0Yzlu5uwy6QTANzz9VnATOU2RitLtr/SpAhK54CafZzeQEU06Z7V kSf0PkLoYoRWd1QnzNffZfxfetQhvIMnmnXqENu7oFXJ1BhS1i1/bkpT X-Gm-Gg: AfdE7cnaA+DwWfakeyr1qsprgYRpn5KjsWyS++f9NQsZu0XP71a6JCGvNwFwScXOEHK i0s0JjHnL9WMiwKJQFIHyPykylG61coZVdAZqQfGctnWc2Gg4W3UQcjNv1R2kT3yyMmrnuWtGmR 3v4SbOLJ0d9aLtIR1CovU4QZodiRr8H8QnnuKoPNvgluJrN/n5ruRgz/CBABICRwonKsNSx48Lz 7FKdJ37QAh19DBsyl/bICEHbiXWgfBPKYDtNWi3mF6PY1s2p5FibsGGZk7hmndgtqtSu2sK1lMm WjEpV5GbVqKS1LIorfZ9YQrLecSCfAqcAK4yxYLS8pD9FuoEsCEyJSLhLbXE0x7k4Kg5x1puiBo CXBgbxrf1HkgTFUhwnUYlXVEBJa+kz+y/EKFfo9D4tLA2Cs6Zm6TzKWpTK/GiWcvk3CC6PAFb1l nXsOexEJy38w== X-Received: by 2002:a05:690e:12cc:b0:660:5c10:deed with SMTP id 956f58d0204a3-662cbc9db17mr3941324d50.55.1781708645682; Wed, 17 Jun 2026 08:04:05 -0700 (PDT) Received: from arch.localdomain ([2409:8a28:a52:c491::1002]) by smtp.gmail.com with ESMTPSA id 956f58d0204a3-662b976e47csm4387677d50.20.2026.06.17.08.04.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 17 Jun 2026 08:04:05 -0700 (PDT) From: Jun Yan To: Dmitry Torokhov , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: Jun Yan , linux-input@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 06/10] Input: cap11xx - add reset gpio support Date: Wed, 17 Jun 2026 23:02:45 +0800 Message-ID: <20260617150318.753148-7-jerrysteve1101@gmail.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260617150318.753148-1-jerrysteve1101@gmail.com> References: <20260617150318.753148-1-jerrysteve1101@gmail.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Some CAP11xx devices (CAP1126/CAP1188) have a dedicated RESET pin. Add hardware reset operation to improve device reliability and ensure proper initialization on probe. Signed-off-by: Jun Yan --- drivers/input/keyboard/cap11xx.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/drivers/input/keyboard/cap11xx.c b/drivers/input/keyboard/cap11xx.c index fae26f035186..1db4a9090705 100644 --- a/drivers/input/keyboard/cap11xx.c +++ b/drivers/input/keyboard/cap11xx.c @@ -5,6 +5,7 @@ * (c) 2014 Daniel Mack */ +#include #include #include #include @@ -44,6 +45,9 @@ #define CAP11XX_MANUFACTURER_ID 0x5d +#define CAP11XX_T_RST_FILT_MIN_US 10000 +#define CAP11XX_T_RST_ON_MIN_MS 400 + #ifdef CONFIG_LEDS_CLASS struct cap11xx_led { struct cap11xx_priv *priv; @@ -56,6 +60,7 @@ struct cap11xx_priv { struct regmap *regmap; struct device *dev; struct input_dev *idev; + struct gpio_desc *reset_gpio; const struct cap11xx_hw_model *model; struct cap11xx_led *leds; @@ -459,6 +464,17 @@ static int cap11xx_i2c_probe(struct i2c_client *i2c_client) if (IS_ERR(priv->regmap)) return PTR_ERR(priv->regmap); + priv->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH); + if (IS_ERR(priv->reset_gpio)) + return dev_err_probe(dev, PTR_ERR(priv->reset_gpio), + "Failed to get 'reset' GPIO\n"); + + if (priv->reset_gpio) { + usleep_range(CAP11XX_T_RST_FILT_MIN_US, CAP11XX_T_RST_FILT_MIN_US * 2); + gpiod_set_value_cansleep(priv->reset_gpio, 0); + msleep(CAP11XX_T_RST_ON_MIN_MS); + } + error = regmap_read(priv->regmap, CAP11XX_REG_PRODUCT_ID, &val); if (error) return dev_err_probe(dev, error, "Failed to read product ID\n"); -- 2.54.0