From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ot1-f51.google.com (mail-ot1-f51.google.com [209.85.210.51]) (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 9A92C1836D9 for ; Mon, 19 Aug 2024 16:48:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.51 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724086130; cv=none; b=iZ+9ln5gs6V8dWfrhCSpNMJCjO9CcKjZVYHJgj5nTjq61CRqMtId5VTOAEA0bVkDV5R2Pi3IlP3Ff32BKY++oI/q/+5K5YGu60E6iHuXAsBVhxe+mF/Ab1u09D5i3+eS44FW20glHtYnMYXEtYVMvUKw8jUWgjeoYK1DU9yUWrI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724086130; c=relaxed/simple; bh=5a+ymo3BBR1upvcXnfIAo+PqatW4K0NQ636IZHuJqs0=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=r3LDvfQ5+mz6Nc0Qbc8ZadbkSyu/agYzkRnr0OxJjb9NHuLcaECM0Y+6kD2DGkv+uUUvNb7oOGIwvRF141my+IkTeG5iF1hTTx3jOh9r0hHJO8BeqvR+Swpvfs2iAyrMOammfQeYgMJr3sfWMuZaNohFB+6HotEtqgZDr2eW+1M= 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=DCVUmkCp; arc=none smtp.client-ip=209.85.210.51 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="DCVUmkCp" Received: by mail-ot1-f51.google.com with SMTP id 46e09a7af769-7095bfd6346so2521902a34.0 for ; Mon, 19 Aug 2024 09:48:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1724086127; x=1724690927; 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=DCVUmkCp+oQXTv/909939Ac1ouOsLGOKbu9jZXcA5qe7HnotaBcjqZefoWGbOpT7jg pvlKp1lQCqu3sAawLtrdxqHZT3Gh7GY9pGTT2QQp++9XfWA7wDCtlu45vwOPkxjFLaC6 BQ/DjfKNYxHM/G+qCOxH7X4NXR0v2cS/NQoyKx9rDdq7yk+ptVxwvqZ6R/UYwXaDyJ04 RnjTzisxmIczjcVdwMglZWrjblqDRPD84X13lnRnPFRbEKZsrOkg9rN+3mL1o4q/6ojB SEYLjOCtaDt2/g02w/PMH9x6SV6BnH5xfOsZ0vj0MlpwVNjALho5s435k5IU7/IknPXc feKw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1724086127; x=1724690927; 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=DlljNDJCAcoRPpexSExtXK+nSvBuHmwjFsy4d2gIWtrV+aDxpTSpI5tXfl7gjEwvaC SF2UcsPhAkijVPmX4HmwV9UhObb4sVzYjUMF0NUacz5XSqvCGOP4b0JI/hLBOoOqvujL uQfwgX9jiWm2gDBK0325nMoKBYRjTB9bObo4SIRpUkrLRUOhQ8zu14uEwwixMZdgzlKz 4ckK0Ql6hri5bxFHwbFuIKnyDfMonWR4TAsQFAwUxItWkKZ//7ePvGlLbmw1tJex2miz O7hplE1nYqluCeueEpUwhGScEkhMpWItbddMqAlwSlYxBmrlGQpltQLiewm6Wcv7ckKM Hwnw== X-Gm-Message-State: AOJu0Yx5kvRZ3dPAgTJ54WQktpJ61nMJUM/38xh6GlfKJ1PyUoIMuboe 6zoiCrbYH+oZL/Lw/gEZ6JiXS838C1NBmuY9z2RxbDS4vGviziX3EuHk5g== X-Google-Smtp-Source: AGHT+IGLpyFYSUV+cBCNRptV8yxiewNZEx5HrXXFCUBc5RJlJY+ALXntzTpuvudFQsRUtsorOOSeSQ== X-Received: by 2002:a05:6830:380d:b0:709:33ee:f578 with SMTP id 46e09a7af769-70cac84f622mr12959822a34.14.1724086127315; Mon, 19 Aug 2024 09:48:47 -0700 (PDT) Received: from localhost.localdomain ([2600:1700:fb0:1bcf::54]) by smtp.gmail.com with ESMTPSA id 46e09a7af769-70ca649c61csm2332428a34.26.2024.08.19.09.48.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Aug 2024 09:48:47 -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, jonathan.cameron@huawei.com, Chris Morgan Subject: [PATCH V3 06/15] power: supply: axp20x_usb_power: add input-current-limit-microamp Date: Mon, 19 Aug 2024 11:46:10 -0500 Message-Id: <20240819164619.556309-7-macroalpha82@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240819164619.556309-1-macroalpha82@gmail.com> References: <20240819164619.556309-1-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