kernel/linux.git/drivers/of/base.c, branch v2.6.28

Merge commit 'gcl/gcl-next'

2008-10-13T23:11:27+00:00

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

powerpc/of-bindings: Don't support linux, "compatible" values

2008-10-10T04:55:18+00:00

Compatible property values in the form linux, is not documented anywhere and using it leaks Linux implementation details into the device tree data (which is bad). Remove support for compatible values of this form. If any platforms exist which depended on this code (and I don't know of any), then they can be fixed up by adding legacy translations to the lookup table in this file. Signed-off-by: Grant Likely Signed-off-by: Benjamin Herrenschmidt

OF: add fsl,mcu-mpc8349emitx to the exception list

2008-10-08T17:37:51+00:00

of/base.c matches on the first (most specific) entries, which isn't quite practical but it was discussed[1] that this won't change. The bindings specifies verbose information for the devices, but it doesn't fit in the I2C ID's 20 characters limit. The limit won't change[2], and the bindings won't change either as they're correct. So we have to put an exception for the MPC8349E-mITX-compatible MCUs. [1] http://www.mail-archive.com/linuxppc-dev@ozlabs.org/msg21196.html [2] http://www.nabble.com/-PATCH-1-2--i2c:-expand-I2C's-id.name-to-23-characters-td19577063.html Signed-off-by: Anton Vorontsov Signed-off-by: Grant Likely

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 null pointer check to of_find_property

2008-05-15T10:49:49+00:00

Update function of_find_property() to return NULL if the device_node passed to it is also NULL. Otherwise, passing NULL will cause a null pointer dereference. Without this, the legacy_serial driver will crash if there's no 'chosen' node in the device tree. Signed-off-by: Timur Tabi Signed-off-by: Paul Mackerras

[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

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