linux-toradex.git/drivers/of/base.c, branch v2.6.25.20

[POWERPC] Add of_get_next_parent()

2008-02-06T05:29:59+00:00

Iterating through a device node's parents is simple enough, but dealing
with the refcounts properly is a little ugly, and replicating that logic
is asking for someone to get it wrong or forget it all together, eg:

while (dn != NULL) {
	/* loop body */
	tmp = of_get_parent(dn);
	of_node_put(dn);
	dn = tmp;
}

So add of_get_next_parent(), inspired by of_get_next_child().  The
contract is that it returns the parent and drops the reference on the
current node, this makes the loop look like:

while (dn != NULL) {
	/* loop body */
	dn = of_get_next_parent(dn);
}

Signed-off-by: Michael Ellerman 
Acked-by: David S. Miller 
Signed-off-by: Paul Mackerras

[POWERPC] Add of_find_matching_node() helper function

2008-01-17T03:53:22+00:00

Similar to of_find_compatible_node(), of_find_matching_node() and
for_each_matching_node() allow you to iterate over the device tree
looking for specific nodes, except that they take of_device_id
tables instead of strings.

This also moves of_match_node() from driver/of/device.c to
driver/of/base.c to colocate it with the of_find_matching_node which
depends on it.

Signed-off-by: Grant Likely 
Signed-off-by: Paul Mackerras

Consolidate of_find_node_by routines

2007-07-20T03:39:06+00:00

This consolidates the routines of_find_node_by_path, of_find_node_by_name,
of_find_node_by_type and of_find_compatible_device.  Again, the comparison
of strings are done differently by Sparc and PowerPC and also these add
read_locks around the iterations.

Signed-off-by: Stephen Rothwell 
Acked-by: Paul Mackerras 
Acked-by: David S. Miller

Consolidate of_get_next_child

2007-07-20T03:34:26+00:00

This adds a read_lock around the child/next accesses on Sparc.

Signed-off-by: Stephen Rothwell 
Acked-by: Paul Mackerras 
Acked-by: David S. Miller

Consolidate of_get_parent

2007-07-20T03:32:58+00:00

This requires creating dummy of_node_{get,put} routines for sparc and
sparc64.  It also adds a read_lock around the parent accesses.

Signed-off-by: Stephen Rothwell 
Acked-by: Paul Mackerras 
Acked-by: David S. Miller

Consolidate of_find_property

2007-07-20T03:32:24+00:00

The only change here is that a readlock is taken while the property list
is being traversed on Sparc where it was not taken previously.

Also, Sparc uses strcasecmp to compare property names while PowerPC
uses strcmp.

Signed-off-by: Stephen Rothwell 
Acked-by: Paul Mackerras 
Acked-by: David S. Miller

Consolidate of_device_is_compatible

2007-07-20T03:29:51+00:00

The only difference here is that Sparc uses strncmp to match compatibility
names while PowerPC uses strncasecmp.

Signed-off-by: Stephen Rothwell 
Acked-by: Paul Mackerras 
Acked-by: David S. Miller

Start split out of common open firmware code

2007-07-20T03:28:41+00:00

This creates drivers/of/base.c (depending on CONFIG_OF) and puts
the first trivially common bits from the prom.c files into it.

Signed-off-by: Stephen Rothwell 
Acked-by: Paul Mackerras 
Acked-by: David S. Miller