linux-toradex.git/include/linux/of.h, branch tegra-10.9.9

of: add of_parse_phandle() helper for parsing phandle properties

2009-04-27T09:53:45+00:00

of_parse_phandle() is a helper function to read and parse a phandle
property and return a pointer to the resulting device_node.

Signed-off-by: Grant Likely 
Acked-by: Andy Fleming 
Signed-off-by: David S. Miller

of: Add helpers for finding device nodes which have a given property

2008-11-19T05:05:00+00:00

This commit adds a routine for finding a device node which has a
certain property.  The contents of the property are not taken into
account, merely the presence or absence of the property.

Based on that routine, we add a for_each_ macro for iterating over all
nodes that have a certain property.

Signed-off-by: Michael Ellerman 
Signed-off-by: Paul Mackerras

of: Add new helper of_parse_phandles_with_args()

2008-10-12T23:55:47+00:00

The helper is factored out of of_get_gpio(). Will be used by the QE
pin multiplexing functions (they need to parse the gpios = <> too).

Signed-off-by: Anton Vorontsov 
Signed-off-by: Benjamin Herrenschmidt

of: adapt of_find_i2c_driver() to be usable by SPI also

2008-07-26T02:25:13+00:00

SPI has a similar problem as I2C in that it needs to determine an
appropriate modalias value for each device node.  This patch adapts
the of_i2c of_find_i2c_driver() function to be usable by of_spi also.

Signed-off-by: Grant Likely

[POWERPC] Add of_device_is_available function

2008-04-07T03:49:23+00:00

IEEE 1275 defined a standard "status" property to indicate the operational
status of a device.  The property has four possible values: okay, disabled,
fail, fail-xxx.  The absence of this property means the operational status
of the device is unknown or okay.

This adds a function called of_device_is_available that checks the state
of the status property of a device.  If the property is absent or set to
either "okay" or "ok", it returns 1.  Otherwise it returns 0.

Signed-off-by: Josh Boyer 
Signed-off-by: Paul Mackerras

[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

[POWERPC] Add for_each_child_of_node() helper for iterating over child nodes

2007-12-11T02:34:39+00:00

Add for_each_child_of_node() to encapsulate the common idiom of
iterating over the children of a device_node.

Signed-off-by: Michael Ellerman 
Acked-by: Stephen Rothwell 
Signed-off-by: Paul Mackerras

remove asm/bitops.h includes

2007-10-19T18:53:41+00:00

remove asm/bitops.h includes

including asm/bitops directly may cause compile errors. don't include it
and include linux/bitops instead. next patch will deny including asm header
directly.

Cc: Adrian Bunk 
Signed-off-by: Jiri Slaby 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[POWERPC] Remove get_property and device_is_compatible

2007-08-17T01:01:58+00:00

They were only needed for backwards compatibility and all in tree uses
have now been changed.

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