From e35c28a24b850afd23beccf9c6683d9cd0b7c4b3 Mon Sep 17 00:00:00 2001 From: Emmanuel Vadot Date: Tue, 17 Nov 2020 14:59:58 +0000 Subject: syscon: Add syscon_get_by_ofw_node This allow to get a syscon node defined under a specific fdt node (which isn't always the device one). --- sys/dev/extres/syscon/syscon.c | 15 +++++++++++++++ sys/dev/extres/syscon/syscon.h | 1 + 2 files changed, 16 insertions(+) (limited to 'sys/dev/extres') diff --git a/sys/dev/extres/syscon/syscon.c b/sys/dev/extres/syscon/syscon.c index 2ab1bec4f140e..9bae304328805 100644 --- a/sys/dev/extres/syscon/syscon.c +++ b/sys/dev/extres/syscon/syscon.c @@ -263,6 +263,21 @@ syscon_get_ofw_node(struct syscon *syscon) return (syscon->ofw_node); } +int +syscon_get_by_ofw_node(device_t cdev, phandle_t node, struct syscon **syscon) +{ + + SYSCON_TOPO_SLOCK(); + *syscon = syscon_find_by_ofw_node(node); + if (*syscon == NULL) { + SYSCON_TOPO_UNLOCK(); + device_printf(cdev, "Failed to find syscon node\n"); + return (ENODEV); + } + SYSCON_TOPO_UNLOCK(); + return (0); +} + int syscon_get_by_ofw_property(device_t cdev, phandle_t cnode, char *name, struct syscon **syscon) diff --git a/sys/dev/extres/syscon/syscon.h b/sys/dev/extres/syscon/syscon.h index ff742937ac1e2..cb138ed5ded53 100644 --- a/sys/dev/extres/syscon/syscon.h +++ b/sys/dev/extres/syscon/syscon.h @@ -73,6 +73,7 @@ struct syscon *syscon_create_ofw_node(device_t pdev, phandle_t syscon_get_ofw_node(struct syscon *syscon); int syscon_get_by_ofw_property(device_t consumer, phandle_t node, char *name, struct syscon **syscon); +int syscon_get_by_ofw_node(device_t cdev, phandle_t node, struct syscon **syscon); #endif #endif /* DEV_SYSCON_H */ -- cgit v1.3