From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f172.google.com (mail-pl1-f172.google.com [209.85.214.172]) (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 B58B52367D9 for ; Fri, 3 Jul 2026 01:42:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783042931; cv=none; b=hgHu4J9tY0y29r9vPCv+DuLZlDN/YbOtrIyLAAFlNQogxzJO+r2MednFT4i9jeimWOyFH+yFmerfNcWNXDEPhBvcafC1/N1QkYhwTSuCjwz9b8ezpwNKjkPrlEqM8KdlG0MmU83gPBAIDzfVLkm6ZiHLWA+LFUdf3+FeK2hBo78= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783042931; c=relaxed/simple; bh=5v7r4afiWttDE5QEdQ0mFJ//RayoGtlyppLyHK96n1M=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=h0gk1N77W2FtEtuzaYxJottzgoUlIOsNqL1SKQrV8ozAlR7U/pUjEtCM08Fx3mSMO0unApm3mmcQ1yvA/nCjoBmm9FDg9RO66kgvyvoFdUItjnQKsxk7Pe2/Ai9CFv4+lj/7liVPI342pAArEDhKQ+FjRrMqPdZ/TMVOJE5SXjY= 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=Raei81j4; arc=none smtp.client-ip=209.85.214.172 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="Raei81j4" Received: by mail-pl1-f172.google.com with SMTP id d9443c01a7336-2c9e9a8af98so235195ad.0 for ; Thu, 02 Jul 2026 18:42:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1783042930; x=1783647730; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=Bdl/nI02rLhhr4XYsH9/1vppwU3vIyQAjQiCX5x8z48=; b=Raei81j4JEYlZ7xxMCI+CzbQ7lpzdQP4QGk+lYiNC+AExmxivRaN3Jv4HJXgi8okBy wINlPdL/5bX/XUsiREs6wbnLrGlLvjPKpg48Zf9gV1uT0zbbREXj1yz1TRKi1576s86Q Of4EwqLs+F7aProUsUQHCteP0VrOrWvaxiEHHzMXbuvcwWhoMB5NWdOT6Ut0tKxU3Mtg z3HYSzXFV3ILFa/8Y28eECq3u5jE7f7rmj+VWmCY8AFCoB1Fd2Xe9S+gsjG1JX7Bcgab GSYi+eszbExNGHDg5CVlQxt2QzpwDpXZxtQk2PDHCso0TwkIin/JgEqMTGVY1YJnpkKg Mmtg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1783042930; x=1783647730; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=Bdl/nI02rLhhr4XYsH9/1vppwU3vIyQAjQiCX5x8z48=; b=P21pLRihMq8juLEnDu9rdMsGmQVZ9I26S4+jnyaDjsxKp6s8LHdPLSx+ZYlq6gwsHl NdBMWEibHMhxwVuUpXEjqrrvExwrHd64kVbJXSaKDEyvCeXu935RutDu23SqpwSSZjZK t6/NmoeQkZtlBV7LKsdKdbVuqkDlk5t0fYDJonyLou/z72vXydGSxC3hZfDwj3X3Z+9Z izkI6L7kkj0rUrIUAR790gdNS1raXGlZq54qFWbRpYR/OS0vgWXvhiyp98njrRtW37eK R6yd/s1qFstP7GPimct8SpSKsaIbhGNtuTkHwNENCn52WWs31ohAG33/VTeCiHbL80ZJ KIyg== X-Forwarded-Encrypted: i=1; AHgh+RrPXX8qapmlIgQUvtuHISqKsRBkrZa+aPah6xS3a85faUbhVNMBrDguC4Dh/Hg4Li6/dxRbf0inJl6E@vger.kernel.org X-Gm-Message-State: AOJu0YyLueARoWge71jMQOg+Cu1ie64lIQgcfP/TIPV6z5g0Dvu+N9X9 RG/XfKrrYEoUQcSwukhVOSblMPa8gURnqO6nvSVOvz1vvzGmlhlCIRwBsLtQyg== X-Gm-Gg: AfdE7cl2R6pROwjP8ASXPfkUgjnFWscq3Ah9TieDens6wmbiqhsT4OdIE4FHSQgJBam dbP39X8FWGJ+RDqw0hN9rg5QH+DW41c8qa0wkV40YF7N+PwPpZaDNZP2rUwvS097hXObesfF8sL OVvOtPbs8oboWyD2chltY9Xd5arz1FNjQ5+DzFOMkAmbMNqsDTHfGAXYl1dkIuSrlDpv4uBMsHd fDzJ2PUhK+sCchTAslK0Q709KaGxFblitN/H5m0tSHm+O0yrLDMA57zyXxbMxXd8omV6Aq8GlSS K8rbHyFfBK6hZBK34S+LrfcFna2cvogOJr3oazTcN2iztHzwrLdiqOe+GT/PMDJ95ozT4SBnpg8 Q2AxJnMuCLb9NkBlh3131jVxixYN2/TG9CBDgGZjmiBoqSsuvgzM5gppU8lkQsWhzyGQYjQpEd0 1dOIKanF6oW5rbKgszmNp7RwYO9rbl0OYWTzXU4ieqao/FAOlucri/wWgjMJk= X-Received: by 2002:a17:902:ecc6:b0:2ca:ca48:c36a with SMTP id d9443c01a7336-2caca48d3ebmr24445935ad.18.1783042929874; Thu, 02 Jul 2026 18:42:09 -0700 (PDT) Received: from cosmo-ubuntu-2404.. (61-220-246-151.hinet-ip.hinet.net. [61.220.246.151]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2cad7140a13sm1250695ad.30.2026.07.02.18.42.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 02 Jul 2026 18:42:09 -0700 (PDT) From: Cosmo Chou To: lee@kernel.org, pavel@kernel.org, riku.voipio@iki.fi Cc: linusw@kernel.org, brgl@kernel.org, linux-leds@vger.kernel.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, cosmo.chou@quantatw.com, Cosmo Chou Subject: [PATCH v2] leds: pca9532: Fix inverted GPIO output polarity Date: Fri, 3 Jul 2026 09:42:01 +0800 Message-ID: <20260703014201.69829-1-chou.cosmo@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The pca9532_gpio_set_value() function incorrectly mapped the requested value to PCA9532_ON and PCA9532_OFF, inverting the GPIO output polarity. A requested logical high (val=1) incorrectly enabled the LED output driver, which on this open-drain device pulls the pin low, while a requested logical low (val=0) released the pin. Correct the mapping so that val=1 yields PCA9532_OFF (pin released / high-impedance) and val=0 yields PCA9532_ON (pin driven low). pca9532_gpio_direction_input() is also updated to pass val=1 to pca9532_gpio_set_value() to align with the corrected polarity mapping, ensuring the pin remains not driven when configured as an input. Fixes: 3c1ab50d0a31 ("drivers/leds/leds-pca9532.c: add gpio capability") Signed-off-by: Cosmo Chou --- Changes in v2: - Correct the format of "Fixes:" tag. drivers/leds/leds-pca9532.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/leds/leds-pca9532.c b/drivers/leds/leds-pca9532.c index f3bf59495b68..2d37e00e459d 100644 --- a/drivers/leds/leds-pca9532.c +++ b/drivers/leds/leds-pca9532.c @@ -327,9 +327,9 @@ static int pca9532_gpio_set_value(struct gpio_chip *gc, unsigned int offset, struct pca9532_led *led = &data->leds[offset]; if (val) - led->state = PCA9532_ON; - else led->state = PCA9532_OFF; + else + led->state = PCA9532_ON; pca9532_setled(led); @@ -349,7 +349,7 @@ static int pca9532_gpio_get_value(struct gpio_chip *gc, unsigned offset) static int pca9532_gpio_direction_input(struct gpio_chip *gc, unsigned offset) { /* To use as input ensure pin is not driven */ - pca9532_gpio_set_value(gc, offset, 0); + pca9532_gpio_set_value(gc, offset, 1); return 0; } -- 2.43.0