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| author | Nathan Fontenot <nfont@linux.vnet.ibm.com> | 2012-10-02 18:57:57 +0200 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-11-15 02:56:41 +0100 |
| commit | 1cf3d8b3d24cd383ddfd5442c83ec5c355ffc2f7 (patch) | |
| tree | 0f4790e95f917c6b76d95c88b7b3d67445261893 /include | |
| parent | powerpc+of: Move of_drconf_cell struct definition to asm/prom.h (diff) | |
| download | linux-1cf3d8b3d24cd383ddfd5442c83ec5c355ffc2f7.tar.xz linux-1cf3d8b3d24cd383ddfd5442c83ec5c355ffc2f7.zip | |
powerpc+of: Add of node/property notification chain for adds and removes
This patch moves the notification chain for updates to the device tree
from the powerpc/pseries code to the base OF code. This makes this
functionality available to all architectures.
Additionally the notification chain is updated to allow notifications
for property add/remove/update. To make this work a pointer to a new
struct (of_prop_reconfig) is passed to the routines in the notification chain.
The of_prop_reconfig property contains a pointer to the node containing the
property and a pointer to the property itself. In the case of property
updates, the property pointer refers to the new property.
Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/of.h | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/include/linux/of.h b/include/linux/of.h index 72843b72a2b2..fb5d87b66e3e 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -22,6 +22,7 @@ #include <linux/mod_devicetable.h> #include <linux/spinlock.h> #include <linux/topology.h> +#include <linux/notifier.h> #include <asm/byteorder.h> #include <asm/errno.h> @@ -272,11 +273,24 @@ extern int prom_remove_property(struct device_node *np, struct property *prop); extern int prom_update_property(struct device_node *np, struct property *newprop); -#if defined(CONFIG_OF_DYNAMIC) /* For updating the device tree at runtime */ -extern void of_attach_node(struct device_node *); -extern void of_detach_node(struct device_node *); -#endif +#define OF_RECONFIG_ATTACH_NODE 0x0001 +#define OF_RECONFIG_DETACH_NODE 0x0002 +#define OF_RECONFIG_ADD_PROPERTY 0x0003 +#define OF_RECONFIG_REMOVE_PROPERTY 0x0004 +#define OF_RECONFIG_UPDATE_PROPERTY 0x0005 + +struct of_prop_reconfig { + struct device_node *dn; + struct property *prop; +}; + +extern int of_reconfig_notifier_register(struct notifier_block *); +extern int of_reconfig_notifier_unregister(struct notifier_block *); +extern int of_reconfig_notify(unsigned long, void *); + +extern int of_attach_node(struct device_node *); +extern int of_detach_node(struct device_node *); #define of_match_ptr(_ptr) (_ptr) |