From nobody Tue Apr 7 10:59:50 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 36050337BA4; Fri, 13 Mar 2026 19:03:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773428609; cv=none; b=rBFiCHTpIgbNUiIxIyXbJiJY+oOCqzWXQHjUYGuu9yOM9979feIxYXIcKWawYmSyR3qG8fezzBHUF+zhALNcDutKywbiV84Qv/ICA4AMYGRLmiey7yC4m6FWYyPhUpRR+uvOmdBTojrGfZ+/Pra7hFgh55MPMSi+Tvc4UqoM10w= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773428609; c=relaxed/simple; bh=Bksge0BwZIZRSlux7ElMK3YW88ScPyqClLpzxyD7WoM=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=lo2oVGWQy610YMXM6uVZPiw4XkfkfeF4gRk26mgvnTDY5tZFu7x5ndCi4L4FrwzRe6ef6dGiulOmY1bIAkKQwkGrOwJ8uw2BFwm3Uzn+lJmjnXvL3nLP//500m+mt4UTJQlpwfqPs3JyvG8ONziCm7IC0G6KfDVsnSY3EqMihsg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=d3Fds5DX; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="d3Fds5DX" Received: by smtp.kernel.org (Postfix) with ESMTPS id 7A76AC2BCB5; Fri, 13 Mar 2026 19:03:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1773428608; bh=Bksge0BwZIZRSlux7ElMK3YW88ScPyqClLpzxyD7WoM=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=d3Fds5DXUU0RJrPsweowB8IsWH0+VPxuzLh4NyE/eo6X/HvFZlMvIGszvnbi+PifN ke1u40jr/eKQA5IpHCEZhIRd/x4YFKoZKuB/P2eGul4mTba2OKcp1HVnFQ486HAtBs 89w6UUA7EHKzujRT6gTqnguKhvx7wGoHDs+I5EgAm5Ph+nF7IrJZK0EK6lkYI9u7IS egJdhO/j8J4un38lIxcdSf/2RS/dHczDjf0O+StPsOs0zyeeyNVP/IRIVMZCQ+NWFq xVMJiKMajFyQ9uq4+a3/OBZENulU2vQDnM2Zj+L4BsHcD0Ajxrj3EyXLT3I8ERA8cK sOGHvTB3FbmaA== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 71262107BCD0; Fri, 13 Mar 2026 19:03:28 +0000 (UTC) From: Markus Probst via B4 Relay Date: Fri, 13 Mar 2026 20:03:08 +0100 Subject: [PATCH v3 4/7] mfd: match acpi devices against PRP0001 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260313-synology_microp_initial-v3-4-ad6ac463a201@posteo.de> References: <20260313-synology_microp_initial-v3-0-ad6ac463a201@posteo.de> In-Reply-To: <20260313-synology_microp_initial-v3-0-ad6ac463a201@posteo.de> To: Lee Jones , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Greg Kroah-Hartman , Miguel Ojeda , Boqun Feng , Gary Guo , =?utf-8?q?Bj=C3=B6rn_Roy_Baron?= , Benno Lossin , Andreas Hindborg , Alice Ryhl , Trevor Gross , Danilo Krummrich , "Rafael J. Wysocki" , Igor Korotin , Daniel Almeida , Bjorn Helgaas , =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= , Pavel Machek , Len Brown , Robert Moore Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, rust-for-linux@vger.kernel.org, driver-core@lists.linux.dev, linux-pci@vger.kernel.org, linux-leds@vger.kernel.org, linux-acpi@vger.kernel.org, acpica-devel@lists.linux.dev, Markus Probst X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=2049; i=markus.probst@posteo.de; h=from:subject:message-id; bh=hBb7npui0bE9foF8ScZ10sjTmUwGIOBRFmkU8LUvBWM=; b=owEBiQJ2/ZANAwAIATR2H/jnrUPSAcsmYgBptF93eoVl4DjsVgQ72oaZooBCN5wvnCfEb4Bga W4Ay9kmUaiJAk8EAAEIADkWIQSCdBjE9KxY53IwxHM0dh/4561D0gUCabRfdxsUgAAAAAAEAA5t YW51MiwyLjUrMS4xMSwyLDIACgkQNHYf+OetQ9L3fhAAhjV2cdrYE2uf7iM0x/J1I4s8JWTDwfI xc+elomemxd+j6pR0OhuKw3DggNCb1dc8H6scm/wv+zqfc0xBKay+QT8Ff3XjZvcfV1U4R3Oyct eyEhtj30Es5qqTjIPLNA1R3NAU3H7lhnUTviHadma7MR00Va9hVUetjEmHx4YDlIepo5n1NNIfU XYlU+dEoRsJ0f74IAhjc0He6zdNLSlLzP7pde5aQLNMq1egTwt42unDrVA6N6Ds++Dzm3ufmCTx fcFTLqoTm9S+A0E+Iie9+3KsPkqsyDY79insqEc8Liv7iqCRtzPrE4GLHh3zYT6pXSMDf/t85Cg IvRUpVxq7plwWrYa7C/s17zVOPhv9NxYSsIldWuUZKqwzJ6Q8xS9HXLA8BCW3XY7OMU6+Qrudjp Qoq/uDrkEHNgAxFHJcxq/L+o89nhnf7dWy0kbljzJaFs4ahpWzmX+BCWp7NtPKfppwnUoTK16va AayxkUxyh1wVVjMwONb4gJImT9Db6YrEzenviJbys/YZpUwQibiBDgRqO0vEuNntLTzChNLekHd bwO+Ca+pBIF05iMu5dk+WfKPtFU8QnXMkSbn7rVm3rkCLGJgYqUz4kTbLWWkCO66okvXGyT20ul nZnHj0MwmDpnd7JKqoESSpaXvpiIAb85zKiiOJMc8kBZFfobEKLQ= X-Developer-Key: i=markus.probst@posteo.de; a=openpgp; fpr=827418C4F4AC58E77230C47334761FF8E7AD43D2 X-Endpoint-Received: by B4 Relay for markus.probst@posteo.de/default with auth_id=680 X-Original-From: Markus Probst Reply-To: markus.probst@posteo.de From: Markus Probst PRP0001 can be used to provide DT-compatible device identification in ACPI. If the mfd device is bound to a acpi fwnode and no acpi_match data is provided by the driver, match against PRP0001 and the provided `of_compatible` string. Signed-off-by: Markus Probst --- drivers/mfd/mfd-core.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/drivers/mfd/mfd-core.c b/drivers/mfd/mfd-core.c index 6be58eb5a746..29bf54664acf 100644 --- a/drivers/mfd/mfd-core.c +++ b/drivers/mfd/mfd-core.c @@ -39,6 +39,10 @@ struct match_ids_walk_data { struct acpi_device_id *ids; struct acpi_device *adev; }; +struct match_of_ids_walk_data { + const struct of_device_id *ids; + struct acpi_device *adev; +}; =20 static int match_device_ids(struct acpi_device *adev, void *data) { @@ -52,10 +56,23 @@ static int match_device_ids(struct acpi_device *adev, v= oid *data) return 0; } =20 +static int match_of_device_ids(struct acpi_device *adev, void *data) +{ + struct match_of_ids_walk_data *wd =3D data; + + if (!acpi_of_match_device_ids(adev, wd->ids)) { + wd->adev =3D adev; + return 1; + } + + return 0; +} + static void mfd_acpi_add_device(const struct mfd_cell *cell, struct platform_device *pdev) { const struct mfd_cell_acpi_match *match =3D cell->acpi_match; + const char *of_compatible =3D cell->of_compatible; struct acpi_device *adev =3D NULL; struct acpi_device *parent; =20 @@ -86,6 +103,16 @@ static void mfd_acpi_add_device(const struct mfd_cell *= cell, } else { adev =3D acpi_find_child_device(parent, match->adr, false); } + } else if (of_compatible) { + struct of_device_id ids[2] =3D {}; + struct match_of_ids_walk_data wd =3D { + .adev =3D NULL, + .ids =3D ids, + }; + + strscpy(ids[0].compatible, of_compatible, sizeof(ids[0].compatible)); + acpi_dev_for_each_child(parent, match_of_device_ids, &wd); + adev =3D wd.adev; } =20 device_set_node(&pdev->dev, acpi_fwnode_handle(adev ?: parent)); --=20 2.52.0