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Mon, 19 Oct 2020 09:10:14 +0000 From: Li Jun To: heikki.krogerus@linux.intel.com, robh+dt@kernel.org, rafael@kernel.org Cc: gregkh@linuxfoundation.org, andriy.shevchenko@linux.intel.com, hdegoede@redhat.com, lee.jones@linaro.org, mika.westerberg@linux.intel.com, dmitry.torokhov@gmail.com, prabhakar.mahadev-lad.rj@bp.renesas.com, laurent.pinchart+renesas@ideasonboard.com, linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-imx@nxp.com, peter.chen@nxp.com Subject: [PATCH v4 2/4] device property: Add fwnode_is_compatible() and device_is_compatible() helpers Date: Mon, 19 Oct 2020 17:03:13 +0800 Message-Id: <1603098195-9923-2-git-send-email-jun.li@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1603098195-9923-1-git-send-email-jun.li@nxp.com> References: <1603098195-9923-1-git-send-email-jun.li@nxp.com> X-Originating-IP: [119.31.174.66] X-ClientProxiedBy: SG2PR01CA0128.apcprd01.prod.exchangelabs.com (2603:1096:4:40::32) To DB8PR04MB6523.eurprd04.prod.outlook.com (2603:10a6:10:10f::26) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from localhost.localdomain (119.31.174.66) by SG2PR01CA0128.apcprd01.prod.exchangelabs.com (2603:1096:4:40::32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.20.3477.21 via Frontend Transport; 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X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: a0fc9a30-67a9-4ee7-b3c6-08d8740ec9df X-MS-Exchange-CrossTenant-AuthSource: DB8PR04MB6523.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Oct 2020 09:10:14.0279 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: Aizlz1/1E+71E1Wl39rA2AdfLKDA3nMKQDYSo3CO8F27OS+QXv4NFrwv+WIE2KeG X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB6PR0401MB2342 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org From: Heikki Krogerus Since there are also some ACPI platforms where the "compatible" property is used, introducing a generic helper function fwnode_is_compatible() that can be used with DT, ACPI and swnodes, and a wrapper function device_is_compatible() with it. The function calls of_device_is_comaptible() with OF nodes, and with ACPI and swnodes it matches the given string against the "compatible" string property array. Signed-off-by: Heikki Krogerus Signed-off-by: Li Jun --- New patch for v4. drivers/base/property.c | 35 +++++++++++++++++++++++++++++++++++ include/linux/property.h | 3 +++ 2 files changed, 38 insertions(+) diff --git a/drivers/base/property.c b/drivers/base/property.c index d58aa98..32e3a3e 100644 --- a/drivers/base/property.c +++ b/drivers/base/property.c @@ -1184,3 +1184,38 @@ const void *device_get_match_data(struct device *dev) return fwnode_call_ptr_op(dev_fwnode(dev), device_get_match_data, dev); } EXPORT_SYMBOL_GPL(device_get_match_data); + +/** + * fwnode_is_compatible - Check does fwnode have the given compatible string + * @fwnode: fwnode with the "compatible" property + * @compat: The compatible string + * + * Match the compatible strings of @fwnode against @compat. Returns positive + * value on match, and 0 when no matching compatible string is found. + */ +int fwnode_is_compatible(struct fwnode_handle *fwnode, const char *compat) +{ + int ret; + + if (is_of_node(fwnode)) + return of_device_is_compatible(to_of_node(fwnode), compat); + + ret = fwnode_property_match_string(fwnode, "compatible", compat); + + return ret < 0 ? 0 : 1; +} +EXPORT_SYMBOL_GPL(fwnode_is_compatible); + +/** + * device_is_compatible - Check does a device have the given compatible string + * @dev: Device with the "compatible" property + * @compat: The compatible string + * + * Match the compatible strings of @dev against @compat. Returns positive value + * on match, and 0 when no matching compatible string is found. + */ +int device_is_compatible(struct device *dev, const char *compat) +{ + return fwnode_is_compatible(dev_fwnode(dev), compat); +} +EXPORT_SYMBOL_GPL(device_is_compatible); diff --git a/include/linux/property.h b/include/linux/property.h index 9f805c4..4a84325 100644 --- a/include/linux/property.h +++ b/include/linux/property.h @@ -418,6 +418,9 @@ fwnode_graph_get_endpoint_by_id(const struct fwnode_handle *fwnode, int fwnode_graph_parse_endpoint(const struct fwnode_handle *fwnode, struct fwnode_endpoint *endpoint); +int fwnode_is_compatible(struct fwnode_handle *fwnode, const char *compat); +int device_is_compatible(struct device *dev, const char *compat); + /* -------------------------------------------------------------------------- */ /* Software fwnode support - when HW description is incomplete or missing */