From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f175.google.com (mail-oi1-f175.google.com [209.85.167.175]) (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 B4CA9165EF6 for ; Fri, 2 Aug 2024 19:22:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.175 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722626577; cv=none; b=S1reffrGfhsQloNPxg9cGPgXfb/nQTW7/96hGPgJY/fs0I6UnJgPFfAEQN6DpAbSCwJ2+nBymFew8m01mwcrOF3mRsJKegEcj55OkBe6Q8Shelbfs+TC5J4L+YNGKZ1/mBmLYkrB4oOU+/P3cG2pAAFp+aFha9d5ki3gwhEDIq4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722626577; c=relaxed/simple; bh=5a+ymo3BBR1upvcXnfIAo+PqatW4K0NQ636IZHuJqs0=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=Tz4uk8n4UZYg1/m1TjtokXwsPK5q3IZSqmmYby1nprnu8laSwm6B8rHzOjQivZn6Rh0mV9SA0JInrrDcdoTJbGEIHgJmhvSbgHsa1KWxF5PtEZ7uHGPH8mXu4CY1IGOp+CoMMQhXP4tE/bk/HA8r5eqsV6oiPon3Pn9wmAmnMPk= 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=At/hnVow; arc=none smtp.client-ip=209.85.167.175 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="At/hnVow" Received: by mail-oi1-f175.google.com with SMTP id 5614622812f47-3db14339fb0so5690035b6e.2 for ; Fri, 02 Aug 2024 12:22:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1722626575; x=1723231375; darn=lists.linux.dev; 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=VW8pLbjHmp58tJfvrusMBZ0t6nfvqNtc57mmOOIaTIw=; b=At/hnVoww2LOfSBGZw5ZzHk88NBnssMDbtmNhYvfYbWUxcc9N1AWw+x8dVOKUxp7dW uWioCFkfPYdvmUekW9zjRmIWI03lR/CccPhKrJYzMJRIYFNx8cBYeXhzni9fDcDdohyo P8SMNS4/JL6FfoExpjPd5jlqT4ewAsHDH1d9VOeeTH4gTv+6E3L8zq/f/6G47nKUr2wO oUA9ztiBooVL3BKMhYmi8+7tYvwJrhriI6/vfOhWEQLfLxhTcF95xec9pKaXC+rOCKAO W9ObOtI4ZOAtrAGZBw2H6AID32TrftruLExvETn4kEpx5tPmcNNWo/Pi6cuBlU8OoU6u Hv8Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1722626575; x=1723231375; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=VW8pLbjHmp58tJfvrusMBZ0t6nfvqNtc57mmOOIaTIw=; b=K7rt6/L7s8YyBMOiByVM6IG9nWNLgAjAXQrWpfK6gvZTm6XmNGcUzjuJd38OJ/jDNL TNlzEeY+w2tS80fPa+KGkYmdZ5cf+cUelGLHWfvjIWd6/umwsC8azthF5IPo7BXb1FHz bNYqkDDudVpX5qrQBvZ+zmCE4bpyEbgk2kf8/aIz4ZCQ2a9eHNajzmXlUBCdLrD5AOKj vM04coxHL2dyBT0fUuszIMJDdGwFDqUMtDC5jgAWSv+5WAtBPsJ9k3IDnnGZH21REvAf v8xkrFSaXK4857c33DTC2cHXNUkq1bT1kSKZ/jOQ/PrYoiwNlOYs3YcaUy/TXCF9j14a O3+A== X-Gm-Message-State: AOJu0Yz9GZWCOxuZObezPzi5msNoH79MdAOr4s+/Jl4jpNZNxksckyUz xku7Z2xJ6kZKoD7tj2P2rln+DZWLjzmk9yIbvsRKGQW9Jm/asncgygvQTQ== X-Google-Smtp-Source: AGHT+IGLrF7R/GoK7DvLxn2rE5wHYPa4hHdeD3olNUeNmJFauek8wLdUUrmSSS7uheaq9kYw3f4lNA== X-Received: by 2002:a05:6808:f8a:b0:3d9:dfef:d7c8 with SMTP id 5614622812f47-3db55817bf8mr5537828b6e.27.1722626574804; Fri, 02 Aug 2024 12:22:54 -0700 (PDT) Received: from localhost.localdomain ([2600:1700:fb0:1bcf::54]) by smtp.gmail.com with ESMTPSA id 5614622812f47-3db563b7065sm584592b6e.46.2024.08.02.12.22.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 02 Aug 2024 12:22:54 -0700 (PDT) From: Chris Morgan To: linux-sunxi@lists.linux.dev Cc: linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-iio@vger.kernel.org, quentin.schulz@free-electrons.com, mripard@kernel.org, tgamblin@baylibre.com, aidanmacdonald.0x0@gmail.com, u.kleine-koenig@pengutronix.de, lee@kernel.org, samuel@sholland.org, jernej.skrabec@gmail.com, sre@kernel.org, wens@csie.org, conor+dt@kernel.org, krzk+dt@kernel.org, robh@kernel.org, lars@metafoo.de, jic23@kernel.org, Chris Morgan Subject: [PATCH V2 06/15] power: supply: axp20x_usb_power: add input-current-limit-microamp Date: Fri, 2 Aug 2024 14:20:17 -0500 Message-Id: <20240802192026.446344-7-macroalpha82@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240802192026.446344-1-macroalpha82@gmail.com> References: <20240802192026.446344-1-macroalpha82@gmail.com> Precedence: bulk X-Mailing-List: linux-sunxi@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Chris Morgan Allow users to specify a maximum input current for the device. Some devices allow up to 3.25A of input current (such as the AXP717), which may be too much for some implementations. Signed-off-by: Chris Morgan --- drivers/power/supply/axp20x_usb_power.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/drivers/power/supply/axp20x_usb_power.c b/drivers/power/supply/axp20x_usb_power.c index cd9e92f2ce71..69fbb5861934 100644 --- a/drivers/power/supply/axp20x_usb_power.c +++ b/drivers/power/supply/axp20x_usb_power.c @@ -80,6 +80,7 @@ struct axp20x_usb_power { struct iio_channel *vbus_v; struct iio_channel *vbus_i; struct delayed_work vbus_detect; + int max_input_cur; unsigned int old_status; unsigned int online; unsigned int num_irqs; @@ -323,6 +324,13 @@ static int axp20x_usb_power_set_input_current_limit(struct axp20x_usb_power *pow if (intval == -1) return -EINVAL; + if (power->max_input_cur && (intval > power->max_input_cur)) { + dev_warn(power->dev, + "reqested current %d clamped to max current %d\n", + intval, power->max_input_cur); + intval = power->max_input_cur; + } + /* * BC1.2 detection can cause a race condition if we try to set a current * limit while it's in progress. When it finishes it will overwrite the @@ -661,6 +669,18 @@ static int axp20x_regmap_field_alloc_optional(struct device *dev, return 0; } +/* Optionally allow users to specify a maximum charging current. */ +static void axp20x_usb_power_parse_dt(struct device *dev, + struct axp20x_usb_power *power) +{ + int ret; + + ret = device_property_read_u32(dev, "input-current-limit-microamp", + &power->max_input_cur); + if (ret) + dev_dbg(dev, "%s() no input-current-limit specified\n", __func__); +} + static int axp20x_usb_power_probe(struct platform_device *pdev) { struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent); @@ -697,6 +717,8 @@ static int axp20x_usb_power_probe(struct platform_device *pdev) if (IS_ERR(power->curr_lim_fld)) return PTR_ERR(power->curr_lim_fld); + axp20x_usb_power_parse_dt(&pdev->dev, power); + ret = axp20x_regmap_field_alloc_optional(&pdev->dev, power->regmap, axp_data->vbus_valid_bit, &power->vbus_valid_bit); -- 2.34.1