From nobody Fri Dec 19 03:04:00 2025 Received: from mail-yw1-f202.google.com (mail-yw1-f202.google.com [209.85.128.202]) (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 3456430EF80 for ; Mon, 13 Oct 2025 20:34:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.202 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760387663; cv=none; b=OTnpiHuAkUNKD0noXvl9hsWJciZYyXVEBUR7lEJRZmKV4R5cSPDxgGT9xrEVnUogiSYMGC0QekdBAwHO4dG1mL+gp0egMgc7TVem5cgrj1D9t5lDRhEBQaC1GR1XGuZkDl2nDiDOwLqk+kZoA5jctS0bOY5S+56GgoLHajD+uNU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760387663; c=relaxed/simple; bh=R1YnFh8aXUGKuVVtnPClepvt/LVUGJ/UtnMqEulZIYo=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=dUFwHb6GPtDWxiW4cSGWH83XoGLQx+kpy60zRVKn3U6qN3UD7tiFBI7uUMpySaT2tey78u33q0psgn7JVMX3GnI3WlilJS6ifs9j2Oa0J7MC9uqpAQnpDJgocswqeMQpKDEktLmO9BjtFJT+jQvqEsPqWIFw/mii02resk4l0y8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--jthies.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=bMO52PQz; arc=none smtp.client-ip=209.85.128.202 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--jthies.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="bMO52PQz" Received: by mail-yw1-f202.google.com with SMTP id 00721157ae682-7811685b417so43821207b3.1 for ; Mon, 13 Oct 2025 13:34:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1760387660; x=1760992460; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=GFnB74J1pAvDm1nl6YVxkFp2KLUlGXZiPBf1NrkOorI=; b=bMO52PQzI4F9dPx84r//NPWVXxaBOt65XYRWH9LDhdRM7bXFtZStQCFKaejRJhfSlS OQr9g6hDIBxLYdnioYiARYTbaxVzMeBwdhU7ELfWZMgScGo2JrGUCwXWky8qDrcDaBPU SnCMo5/9alVda50NLSfhgeblc94Nb4NkQSO8rzGm+CZ5gldUd04tQp/WMU4+hYyC9Rha MoWgdQsvzv6eEzhFeqahauHedOUl9E8y/T7WtB2jbbYcUpqo92hJssxkD6zG2ZnfXccf YuUH5Q98qKN6joDtJ3EwZ3w/f5xDidnCDT40rTwBvJ6nrP5mYhT6rDbPYqrkF99cJvhU YbFA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1760387660; x=1760992460; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=GFnB74J1pAvDm1nl6YVxkFp2KLUlGXZiPBf1NrkOorI=; b=pkAwkvRBL8VFDtbs+1WVIwFVLIdbQhTabYpxX4qcvb2Z3GHD5cypa0Fgx6nsYuvASM UwtR9457rQSHiWuyzRoDxyMZXJwqjinAZWqu+aI87qSR41q55eexPn/vG8bkbVXlN/CO 8l66uDPvYJo6Hm/Y+7XVuqVZ2o3q2Ogv5nhFDtTfoQp15WXHKfKc+wcRJxcnvuOYYsOM jgy9HgGtoeM2YR57mmkAOg4wtlMMIUwKWLZjJMj4aJUVAzqqeKLzZxcPEXL+X1y2ryz8 MvgF50mdD84Cyrog9sGRWNEEagAYv6s/1B2bTrxRNpyijVf4fjAsWJBH3XSw3CTpZQKa i3qw== X-Forwarded-Encrypted: i=1; AJvYcCWIdcsyh+4alldssSSRCArMKI1rt8NNGm7VwGduq+Wal5DjcDASh2HzQB6ofkIWBtot4vOIK/hha7+L/Sw=@vger.kernel.org X-Gm-Message-State: AOJu0YxU/FriNkWIz0m5LGWcM8O56au/yZt35vGD71bSaK8dsXflijkH akD4hENVuwLNcwIELPYPy80lqY/UcWkS4xJDibfriK09+EjEVUkVaG97PJfpTQxMwaJakGcaGrR rEbOvtw== X-Google-Smtp-Source: AGHT+IEjUm82raEjN7d+M3tvikmOo78EaMWdJ4VaMRN5Im1/+9AxanQNq/18YLWj74gbMAzsjUUto92DYFo= X-Received: from ywbjh10.prod.google.com ([2002:a05:690c:710a:b0:780:e432:6fc7]) (user=jthies job=prod-delivery.src-stubby-dispatcher) by 2002:a05:690c:7487:b0:781:64f:3145 with SMTP id 00721157ae682-781064f72ecmr131650497b3.67.1760387660244; Mon, 13 Oct 2025 13:34:20 -0700 (PDT) Date: Mon, 13 Oct 2025 20:33:27 +0000 In-Reply-To: <20251013203331.398517-1-jthies@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20251013203331.398517-1-jthies@google.com> X-Mailer: git-send-email 2.51.0.858.gf9c4a03a3a-goog Message-ID: <20251013203331.398517-4-jthies@google.com> Subject: [PATCH v4 3/3] mfd: cros_ec: Don't add cros_ec_ucsi if it is defined in OF or ACPI From: Jameson Thies To: dmitry.baryshkov@oss.qualcomm.com, akuchynski@chromium.org, abhishekpandit@chromium.org, krzk+dt@kernel.org, robh@kernel.org, bleung@chromium.org, heikki.krogerus@linux.intel.com, ukaszb@chromium.org, tzungbi@kernel.org Cc: devicetree@vger.kernel.org, chrome-platform@lists.linux.dev, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, Jameson Thies Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" On devices with a UCSI PPM in the EC, check for cros_ec_ucsi to be defined in the OF device tree or an ACPI node. If it is defined by either OF or ACPI, it does not need to be added as a subdevice of cros_ec_dev mfd. cros_ec_ucsi will load from the OF or ACPI node. Signed-off-by: Jameson Thies Reviewed-by: Benson Leung Reviewed-by: Abhishek Pandit-Subedi --- drivers/mfd/cros_ec_dev.c | 23 ++++++++++++++++++----- 1 file changed, 18 insertions(+), 5 deletions(-) diff --git a/drivers/mfd/cros_ec_dev.c b/drivers/mfd/cros_ec_dev.c index dc80a272726b..1928c2ea2b8f 100644 --- a/drivers/mfd/cros_ec_dev.c +++ b/drivers/mfd/cros_ec_dev.c @@ -5,6 +5,7 @@ * Copyright (C) 2014 Google, Inc. */ =20 +#include #include #include #include @@ -131,11 +132,6 @@ static const struct cros_feature_to_cells cros_subdevi= ces[] =3D { .mfd_cells =3D cros_ec_rtc_cells, .num_cells =3D ARRAY_SIZE(cros_ec_rtc_cells), }, - { - .id =3D EC_FEATURE_UCSI_PPM, - .mfd_cells =3D cros_ec_ucsi_cells, - .num_cells =3D ARRAY_SIZE(cros_ec_ucsi_cells), - }, { .id =3D EC_FEATURE_HANG_DETECT, .mfd_cells =3D cros_ec_wdt_cells, @@ -264,6 +260,23 @@ static int ec_device_probe(struct platform_device *pde= v) } } =20 + /* + * FW nodes can load cros_ec_ucsi, but early PDC devices did not define + * the required nodes. On PDC systems without FW nodes for cros_ec_ucsi, + * the driver should be added as an mfd subdevice. + */ + if (cros_ec_check_features(ec, EC_FEATURE_USB_PD) && + cros_ec_check_features(ec, EC_FEATURE_UCSI_PPM) && + !acpi_dev_found("GOOG0021") && + !of_find_compatible_node(NULL, NULL, "google,cros-ec-ucsi")) { + retval =3D mfd_add_hotplug_devices(ec->dev, + cros_ec_ucsi_cells, + ARRAY_SIZE(cros_ec_ucsi_cells)); + + if (retval) + dev_warn(ec->dev, "failed to add cros_ec_ucsi: %d\n", retval); + } + /* * UCSI provides power supply information so we don't need to separately * load the cros_usbpd_charger driver. --=20 2.51.0.858.gf9c4a03a3a-goog