21 Dec, 2008
3 commits
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This function is used to count how many GPIOs are specified for
a device node.Signed-off-by: Anton Vorontsov
Signed-off-by: Paul Mackerras -
Given this list (contains three gpio specifiers, one of which is a hole):
gpios = ;
of_parse_phandles_with_args() would report -ENOENT for the `hole'
specifier item, the same error value is used to report the end of the
list, for example.Sometimes we want to differentiate holes from real errors -- for
example when we want to count all the [syntax correct] specifiers.With this patch of_parse_phandles_with_args() will report -EEXITS when
somebody requested to parse a hole.Also, make the out_{node,args} arguments optional, when counting we
don't really need the out values.Signed-off-by: Anton Vorontsov
Signed-off-by: Paul Mackerras -
By using 'list++' in the beginning we can simplify the code a
little bit.Suggested-by: Benjamin Herrenschmidt
Signed-off-by: Anton Vorontsov
Signed-off-by: Paul Mackerras
03 Dec, 2008
2 commits
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This adds a new function, of_get_gpio_flags, which is like
of_get_gpio(), but accepts a new "flags" argument. This new function
will be used by the drivers that need to retrieve additional GPIO
information, such as active-low flag.Also, this changes the default ("simple") .xlate routine to warn about
bogus (< 2) #gpio-cells usage: the second cell should always be present
for GPIO flags.Signed-off-by: Anton Vorontsov
Signed-off-by: Paul Mackerras -
For I2C devices we just setting the node pointer in the archdata. This
is needed so that the I2C devices could find their OF tree nodes.Signed-off-by: Anton Vorontsov
Acked-by: Grant Likely
Signed-off-by: Paul Mackerras
19 Nov, 2008
1 commit
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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
31 Oct, 2008
1 commit
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Currently, the numa_node of OF-devices will be overwritten during
device_register, which simply sets the node to -1. On cell machines,
this means that devices can't find their IOMMU, which is referenced
through the device's numa node.Set the numa node for OF devices with no parent, and use the
lower-level device_initialize and device_add functions, so that the
node is preserved.We can remove the call to set_dev_node in of_device_alloc, as it
will be overwritten during register.Signed-off-by: Jeremy Kerr
Signed-off-by: Paul Mackerras
21 Oct, 2008
3 commits
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The patch allows to specify that an SPI device needs an active high chip
select.Signed-off-by: Wolfgang Ocker
Signed-off-by: Kumar Gala -
Format string bug. Not exploitable, as this is only writable by root,
but worth fixing all the same.See 326f6a5c9c9e1a62aec37bdc0c3f8d53adabe77b
Signed-off-by: Benjamin Herrenschmidt
14 Oct, 2008
1 commit
13 Oct, 2008
1 commit
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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
10 Oct, 2008
1 commit
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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
09 Oct, 2008
1 commit
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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.htmlSigned-off-by: Anton Vorontsov
Signed-off-by: Grant Likely
20 Aug, 2008
1 commit
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Recent of_platform changes made of_bus_type_init() overwrite the bus
type's .dev_attrs list, meaning that the "name" attribute that ibmebus
devices previously had is no longer present. This is a user-visible
regression which breaks the userspace eHCA support, since the eHCA
userspace driver relies on the name attribute to check for valid
adapters.This fixes it by providing the "name" attribute in the generic OF
device code instead. Tested on POWER.Signed-off-by: Joachim Fenkes
Signed-off-by: Paul Mackerras
26 Jul, 2008
4 commits
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This patch adds support for populating an SPI bus based on data in the
OF device tree. This is useful for powerpc platforms which use the
device tree instead of discrete code for describing platform layout.Signed-off-by: Grant Likely
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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
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* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (34 commits)
powerpc: Wireup new syscalls
Move update_mmu_cache() declaration from tlbflush.h to pgtable.h
powerpc/pseries: Remove kmalloc call in handling writes to lparcfg
powerpc/pseries: Update arch vector to indicate support for CMO
ibmvfc: Add support for collaborative memory overcommit
ibmvscsi: driver enablement for CMO
ibmveth: enable driver for CMO
ibmveth: Automatically enable larger rx buffer pools for larger mtu
powerpc/pseries: Verify CMO memory entitlement updates with virtual I/O
powerpc/pseries: vio bus support for CMO
powerpc/pseries: iommu enablement for CMO
powerpc/pseries: Add CMO paging statistics
powerpc/pseries: Add collaborative memory manager
powerpc/pseries: Utilities to set firmware page state
powerpc/pseries: Enable CMO feature during platform setup
powerpc/pseries: Split retrieval of processor entitlement data into a helper routine
powerpc/pseries: Add memory entitlement capabilities to /proc/ppc64/lparcfg
powerpc/pseries: Split processor entitlement retrieval and gathering to helper routines
powerpc/pseries: Remove extraneous error reporting for hcall failures in lparcfg
powerpc: Fix compile error with binutils 2.15
...Fixed up conflict in arch/powerpc/platforms/52xx/Kconfig manually.
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This patch adds functionality to the gpio-lib subsystem to make it
possible to enable the gpio-lib code even if the architecture code didn't
request to get it built in.The archtitecture code does still need to implement the gpiolib accessor
functions in its asm/gpio.h file. This patch adds the implementations for
x86 and PPC.With these changes it is possible to run generic GPIO expansion cards on
every architecture that implements the trivial wrapper functions. Support
for more architectures can easily be added.Signed-off-by: Michael Buesch
Cc: Benjamin Herrenschmidt
Cc: Stephen Rothwell
Cc: David Brownell
Cc: Russell King
Cc: Haavard Skinnemoen
Cc: Jesper Nilsson
Cc: Ralf Baechle
Cc: Paul Mackerras
Cc: Benjamin Herrenschmidt
Cc: Ingo Molnar
Cc: Thomas Gleixner
Cc: Jean Delvare
Cc: Samuel Ortiz
Cc: Kumar Gala
Cc: Sam Ravnborg
Cc: Adrian Bunk
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
22 Jul, 2008
1 commit
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If an I2C device node does not specify an interrupt, the .irq member of the
board_info struct was set to -1. This caused crashes on following
irq_dispose_mappings. Leave it NO_IRQ as returned from irq_of_parse_and_map.
(Suggesting -1 as 'i2c-no-irq' used to be a bug in linux/i2c.h.)Signed-off-by: Wolfram Sang
Acked-by: Sean MacLennan
Signed-off-by: Grant Likely
13 Jul, 2008
1 commit
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drivers/of/of_i2c.c should include for the prototype
for of_register_i2c_devices().Signed-off-by: Robert P. J. Day
Acked-by: Jean Delvare
Acked-by: Jochen Friedrich
Acked-by: Stephen Rothwell
Signed-off-by: Grant Likely
09 Jun, 2008
1 commit
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Conflicts:
arch/powerpc/sysdev/fsl_soc.c
07 Jun, 2008
1 commit
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Change the name of the device from "rtc-ds1374" to just "ds1374", to match
what all other RTC drivers do. I seem to remember that this name was
chosen to avoid possible confusion with an older ds1374 driver, but that
driver was removed 3 months ago.Signed-off-by: Jean Delvare
Signed-off-by: Alessandro Zummo
Acked-by: Kumar Gala
Cc: Paul Mackerras
Cc: Benjamin Herrenschmidt
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
23 May, 2008
1 commit
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Since the "gpiolib: dynamic gpio number allocation" patch was recently
merged into Linus' tree (commit 8d0aab2f16c4fa170f32e7a74a52cd0122bbafef),
we can use dynamic GPIO base allocation now.This, in turn, removes number of gpios per chip constraint.
Signed-off-by: Anton Vorontsov
Signed-off-by: Paul Mackerras
16 May, 2008
2 commits
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Commit 140b932f8cb6cced10b96860651a198b1b89cbb9 ("Create modalias file
in sysfs for of_platform bus") needs this to avoid breaking the sparc
builds.Just move the code and add whitespace around some binary operators.
Signed-off-by: Stephen Rothwell
Acked-by: David S. Miller
Signed-off-by: Paul Mackerras
15 May, 2008
1 commit
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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
14 May, 2008
1 commit
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Create /sys/bus/of_platform/devices/*/modalias file to allow autoloading
of modules. Modalias files are already present for many other bus types.
This adds also a newline to the devspec files.Also create a devspec file for mac-io devices. They were created as a
side effect. Use correct buffer size for mac-io modalias buffer.Tested on iBook1 and Efika.
Signed-off-by: Olaf Hering
Signed-off-by: Paul Mackerras
24 Apr, 2008
1 commit
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After commit 585468e5d5962660867c269e26f0a4b89a599473
([POWERPC] i2c: Fix build breakage introduced by OF helpers)
drivers/of/of_i2c.c needs a MODULE_LICENSE.Signed-off-by: Adrian Bunk
Signed-off-by: Paul Mackerras
20 Apr, 2008
1 commit
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Fix build breakage introduced in commit "[POWERPC] i2c: OF helpers for
the i2c API". If i2c-core is compiled as a module, the helper needs
to be compiled as a module, as well. Rename i2c.c to of_i2c.c to
avoid name space conflict.[paulus@samba.org: Changed dependency from OF to PPC_OF to avoid
sparc{32,64} allmodconfig breakage.]Signed-off-by: Jochen Friedrich
Signed-off-by: Paul Mackerras
17 Apr, 2008
2 commits
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This implements various helpers to support OF bindings for the i2c
API.Signed-off-by: Jochen Friedrich
Acked-by: David S. Miller
Acked-by: Stephen Rothwell
Signed-off-by: Paul Mackerras -
This implements various helpers to support OF bindings for the GPIO
LIB API.Previously this was PowerPC specific, but it seems this code isn't
arch-dependent anyhow, so let's place it into of/.SPARC will not see this addition yet, real hardware seem to not use
GPIOs at all. But this might change:http://www.leox.org/docs/faq_MLleon.html
"16-bit I/O port" sounds promising. :-)
Signed-off-by: Anton Vorontsov
Acked-by: Grant Likely
Signed-off-by: Paul Mackerras
07 Apr, 2008
1 commit
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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
06 Feb, 2008
2 commits
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Although of_platform_device's can have a shutdown routine, at the moment
the bus code doesn't actually call it. So add the required glue to
hook the shutdown routine.Signed-off-by: Michael Ellerman
Acked-by: Benjamin Herrenschmidt
Signed-off-by: Paul Mackerras -
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
17 Jan, 2008
1 commit
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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
18 Oct, 2007
1 commit
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Also of_unregister_driver. These will be shortly also used by the
PowerPC code.Signed-off-by: Stephen Rothwell
Signed-off-by: David S. Miller
20 Jul, 2007
3 commits
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and populate it with the common parts from PowerPC and Sparc[64].
Signed-off-by: Stephen Rothwell
Acked-by: Paul Mackerras
Acked-by: David S. Miller -
This just moves the common stuff from the arch of_device.h files to
linux/of_device.h.Signed-off-by: Stephen Rothwell
Acked-by: Paul Mackerras
Acked-by: David S. Miller -
This moves all the common parts for the Sparc, Sparc64 and PowerPC
of_device.c files into drivers/of/device.c.Apart from the simple move, Sparc gains of_match_node() and a call to
of_node_put in of_release_dev(). PowerPC gains better recovery if
device_create_file() fails in of_device_register().Signed-off-by: Stephen Rothwell
Acked-by: Paul Mackerras
Acked-by: David S. Miller