24 Dec, 2010
1 commit
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If we are registering an i2c device that has a device tree node like
this real-world example:rtc@68 {
compatible = "dallas,ds1337";
reg = ;
};of_i2c_register_devices() will try to load a module called ds1337.ko.
There is no such module, so it will fail. If we look in modules.alias
we will find entries like these:.
.
.
alias i2c:ds1339 rtc_ds1307
alias i2c:ds1338 rtc_ds1307
alias i2c:ds1337 rtc_ds1307
alias i2c:ds1307 rtc_ds1307
alias i2c:ds1374 rtc_ds1374
.
.
.The module we want is really called rtc_ds1307.ko. If we request a
module called "i2c:ds1337", the userspace module loader will do the
right thing (unless it is busybox) and load rtc_ds1307.ko. So we add
the I2C_MODULE_PREFIX to the request_module() string.Signed-off-by: David Daney
Signed-off-by: Grant Likely
22 Oct, 2010
1 commit
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The __init directives should go on the definitions of things, not the
declaration, also __init is meaningless for inline functions, so
remove it from prom.h. This allows us to get rid of a useless
#include, but most of the rest of them are useless too, so kill them
as well.If of_i2c.c needs irq definitions, it should include linux/irq.h
directly, not assume indirect inclusion via asm/prom.h.Signed-off-by: David Daney
Acked-by: Ralf Baechle
Signed-off-by: Grant Likely
06 Jul, 2010
1 commit
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This patch cleans up the i2c OF support code to make it selectable by
all architectures and allow for automatic registration of i2c devices.Signed-off-by: Grant Likely
19 May, 2010
2 commits
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This patch eliminates the node pointer from struct of_device and the
of_node (or prom_node) pointer from struct dev_archdata since the node
pointer is now part of struct device proper when CONFIG_OF is set, and
all users of the old pointer locations have already been converted over
to use device->of_node.Also remove dev_archdata_{get,set}_node() as it is no longer used by
anything.Signed-off-by: Grant Likely
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The following structure elements duplicate the information in
'struct device.of_node' and so are being eliminated. This patch
makes all readers of these elements use device.of_node instead.(struct of_device *)->node
(struct dev_archdata *)->prom_node (sparc)
(struct dev_archdata *)->of_node (powerpc & microblaze)Signed-off-by: Grant Likely
29 Apr, 2010
1 commit
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The struct device_node *of_node pointer is moving out of dev->archdata
and into the struct device proper. of_i2c.c needs to set the of_node
pointer before the device is registered. Since the i2c subsystem
doesn't allow 2 stage allocation and registration of i2c devices, the
of_node pointer needs to be passed via the i2c_board_info structure
so that it is set prior to registration.This patch adds of_node to struct i2c_board_info (conditional on
CONFIG_OF), sets of_node in i2c_new_device(), and modifies of_i2c.c
to use the new parameter. The calling of dev_archdata_set_node()
from of_i2c will be removed in a subsequent patch when of_node is
removed from archdata and all users are converted over.Signed-off-by: Grant Likely
09 Feb, 2010
1 commit
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Properties in the device tree are specified as big-endian. At present,
the only platforms to support device trees are also big-endian, so we've
been acessing the properties as raw values.We'd like to add device tree support to little-endian platforms too, so
add endian conversion to the sites where we access property values in
the common of code.Compiled on powerpc (ppc44x_defconfig & ppc64_defconfig) and arm (fdt
support only for now).Signed-off-by: Jeremy Kerr
Signed-off-by: Grant Likely
10 Jan, 2009
1 commit
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The of_find_i2c_device_by_node function allows you to follow a
reference in the device tree to an i2c device node and then locate
the linux device instantiated by the device tree. Example use: an I2S
bus driver finding the i2c_device instance for a codec described by
a device tree node.This was waiting for Anton's i2c patches that were just added.
Signed-off-by: Jon Smirl
Signed-off-by: Grant Likely
03 Dec, 2008
1 commit
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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
21 Oct, 2008
1 commit
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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
26 Jul, 2008
1 commit
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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
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
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
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
