From 32559cecae49998091dd5645b386ed917f5c468d Mon Sep 17 00:00:00 2001 From: Michael Tretter Date: Fri, 13 Sep 2019 15:14:42 +0200 Subject: firmware: add function to find firmware by devicetree node Allows to get the firmware manager using a phandle from the devicetree. Signed-off-by: Michael Tretter Signed-off-by: Sascha Hauer --- common/firmware.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'common') 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 -- cgit v1.2.3