From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1hC3k6-0007eA-2C for barebox@lists.infradead.org; Thu, 04 Apr 2019 14:53:29 +0000 From: Michael Tretter Date: Thu, 4 Apr 2019 16:53:18 +0200 Message-Id: <20190404145320.11465-6-m.tretter@pengutronix.de> In-Reply-To: <20190404145320.11465-1-m.tretter@pengutronix.de> References: <20190404145320.11465-1-m.tretter@pengutronix.de> MIME-Version: 1.0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [RFC PATCH 5/7] firmware: allow to find manager by device node To: barebox@lists.infradead.org Cc: Michael Tretter The firmware manager can be found by using the id-String. The id cannot be used, if the user of the firmware handler is a driver that only has a handle to the firmware managers devicetree node, because there is no way to map from the devicetree to the id. Add a function that allows to get the firmware handler using its device tree node. Signed-off-by: Michael Tretter --- common/firmware.c | 18 ++++++++++++++++++ include/firmware.h | 1 + 2 files changed, 19 insertions(+) diff --git a/common/firmware.c b/common/firmware.c index 9d55d73e7a..609cf11822 100644 --- a/common/firmware.c +++ b/common/firmware.c @@ -62,6 +62,24 @@ struct firmware_mgr *firmwaremgr_find(const char *id) return NULL; } +/* + * firmwaremgr_find_by_node - find a firmware device handler + * + * Find a firmware device handler using the device node of the firmware + * handler. This allows to retrieve the firmware handler with a phandle from + * the device tree. + */ +struct firmware_mgr *firmwaremgr_find_by_node(const struct device_node *np) +{ + struct firmware_mgr *mgr; + + list_for_each_entry(mgr, &firmwaremgr_list, list) + if (mgr->handler->dev->parent->device_node == np) + return mgr; + + return NULL; +} + /* * firmwaremgr_list_handlers - list registered firmware device handlers * in pretty format diff --git a/include/firmware.h b/include/firmware.h index 284e0f9705..ccd3b0669b 100644 --- a/include/firmware.h +++ b/include/firmware.h @@ -34,6 +34,7 @@ struct firmware_mgr; int firmwaremgr_register(struct firmware_handler *); struct firmware_mgr *firmwaremgr_find(const char *); +struct firmware_mgr *firmwaremgr_find_by_node(const struct device_node *); void firmwaremgr_list_handlers(void); -- 2.20.1 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox