02 Dec, 2009
1 commit
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- Remove wrong and unnecessary unmask operation
- Remove extra GEDR reading
This fixes the loss of interrupts which occurs when two or more pins are
triggered in close succession.Signed-off-by: Alek Du
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
12 Nov, 2009
1 commit
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In case of failure, device_create() returns not NULL but the error code.
The current code checks for non-NULL though which causes kernel oops in
sysfs_create_group() when device_create() fails. Check for error using
IS_ERR() and propagate the error value using PTR_ERR() instead of fixed
-ENODEV code returned now...Signed-off-by: Sergei Shtylyov
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
29 Oct, 2009
1 commit
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The gpio_twl4030_probe() function calls gpio_twl4030_remove(), and the
former has __devinit, so the latter cannot use __devexit. Otherwise we
hit the section mismatch warning:WARNING: drivers/gpio/built-in.o(.devinit.text+0x71a): Section mismatch
in reference from the function _gpio_twl4030_probe() to the function
.devexit.text:_gpio_twl4030_remove()
The function __devinit _gpio_twl4030_probe() references a function
__devexit _gpio_twl4030_remove().
This is often seen when error handling in the init function uses
functionality in the exit path.
The fix is often to remove the __devexit annotation of
_gpio_twl4030_remove() so it may be used outside an exit section.Signed-off-by: Mike Frysinger
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
02 Oct, 2009
1 commit
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[akpm@linux-foundation.org: fix KVM]
Signed-off-by: Alexey Dobriyan
Acked-by: Mike Frysinger
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
24 Sep, 2009
1 commit
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* 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
i2c: Clearly mark ACPI drivers as such
i2c: Add driver for SMBus Control Method Interface
i2c-pnx: Correct use of request_region/request_mem_region
MAINTAINERS: Add maintainer for AT24 and PCA9564/PCA9665
i2c-piix4: Add AMD SB900 SMBus device ID
i2c/chips: Remove deprecated pcf8574 driver
i2c/chips: Remove deprecated pca9539 driver
i2c/chips: Remove deprecated pcf8575 driver
gpio/pcf857x: Copy i2c_device_id from old pcf8574 driver
i2c/scx200_acb: Provide more information on bus errors
i2c: Provide compatibility links for i2c adapters
i2c: Convert i2c adapters to bus devices
i2c: Convert i2c clients to a device type
i2c/tsl2550: Use combined SMBus transactions
i2c-taos-evm: Switch echo off to improve performance
i2c: Drop unused i2c_driver.id field
23 Sep, 2009
9 commits
-
Signed-off-by: Michael Hennerich
Signed-off-by: Bryan Wu
Signed-off-by: Mike Frysinger
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Many gpio chips allow to generate interrupts when the value of a pin
changes. This patch gives usermode application the opportunity to make
use of this feature by calling poll(2) on the /sys/class/gpio/gpioN/value
sysfs file. The edge to trigger can be set in the edge file in the same
directory. Possible values are "none", "rising", "falling", and "both".Using level triggers is not possible with current sysfs since nothing
changes the GPIO value (and the IRQ keeps triggering). Edge triggering
will "just work". Note that if there was an event between read() and
poll(), the poll() returns immediately.Also note that this version only supports true GPIO interrupts. Some
later patch might be able to synthesize this behavior by timer-driven
polling; some systems seem to need that.[dbrownell@users.sourceforge.net: align ids to 16 bit ids; whitespace]
Signed-off-by: Daniel Glöckner
Signed-off-by: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Drivers should be including not .
Signed-off-by: H Hartley Sweeten
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
MAX7315 is pin and software compatible with PCA9534, so add it to the I2C
device ID table of pca953x driver.
http://www.datasheetcatalog.org/datasheet/maxim/MAX7315.pdfSigned-off-by: Alek Du
Acked-by: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The Langwell chip is the IO hub for Intel Moorestown platform which has a
64-pin gpio block device inside. It is exposed as a dedicated PCI device.
We use it to control outside peripheral as well as to do IRQ demuxing.
The gpio block uses MSI to send level type interrupt to IOAPIC.Signed-off-by: Alek Du
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Cc: Eric Miao
Cc: Russell King
Cc: David Brownell
Cc: Samuel Ortiz
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
A GPIO driver for the Freescale MC33880 High/Low side switch
Signed-off-by: Richard Röjfors
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Commit 926b663ce8215ba448960e1ff6e58b67a2c3b99b (gpiolib: allow GPIOs to
be named) already provides naming on the chip level. This patch provides
more flexibility by allowing multiple names where ever in sysfs on a per
GPIO basis.Adapted from David Brownell's comments on a similar concept:
http://lkml.org/lkml/2009/4/20/203.[randy.dunlap@oracle.com: fix build for CONFIG_GENERIC_GPIO=n]
Signed-off-by: Jani Nikula
Acked-by: David Brownell
Cc: Daniel Silverstone
Signed-off-by: Randy Dunlap
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This makes it consistent with other buses (platform, i2c, vio, ...). I'm
not sure why we use the prefixes, but there must be a reason.This was easy enough to do it, and I did it.
Signed-off-by: Anton Vorontsov
Cc: David Brownell
Cc: David Woodhouse
Cc: Grant Likely
Cc: Jean Delvare
Cc: Ben Dooks
Cc: Benjamin Herrenschmidt
Cc: Dmitry Torokhov
Cc: Samuel Ortiz
Cc: "John W. Linville"
Acked-by: Mike Frysinger
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
21 Sep, 2009
1 commit
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Trivial patch which adds the __init/__exit macro to the init/exit functions of
drivers/gpio/bt8xxgpio.cSigned-off-by: Peter Huewe
Acked-by: Michael Buesch
Signed-off-by: Jiri Kosina
19 Sep, 2009
1 commit
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The deprecated pcf8574 driver is going to be removed. Make sure the
replacement driver inherits all i2c_device_ids for a smooth transition.Signed-off-by: Wolfram Sang
Cc: David Brownell
Signed-off-by: Jean Delvare
17 Sep, 2009
1 commit
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Add support for the GPIO pins on the WM831x. No direct support is
currently supplied for configuring non-gpiolib functionality such
as pull configuration and alternate functions, soft configuration
of these will be provided in a future patch.Currently use of these pins as interrupts is not supported due to
the ongoing issues with generic irq not support interrupt controllers
on interrupt driven buses. Users can directly request the interrupts
with the wm831x-specific APIs currently provided if required.Signed-off-by: Mark Brown
Acked-by: David Brownell
Signed-off-by: Samuel Ortiz
13 Jul, 2009
1 commit
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* Remove smp_lock.h from files which don't need it (including some headers!)
* Add smp_lock.h to files which do need it
* Make smp_lock.h include conditional in hardirq.h
It's needed only for one kernel_locked() usage which is under CONFIG_PREEMPTThis will make hardirq.h inclusion cheaper for every PREEMPT=n config
(which includes allmodconfig/allyesconfig, BTW)Signed-off-by: Alexey Dobriyan
Signed-off-by: Linus Torvalds
03 Jul, 2009
2 commits
-
Signed-off-by: Yoichi Yuasa
Signed-off-by: Ralf Baechle -
Signed-off-by: Yoichi Yuasa
Signed-off-by: Ralf Baechle
01 Jul, 2009
2 commits
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IRQ handling is wrong for any GPIO >= PL061_GPIO_NR.
Fix this by implementing and using a proper .to_irq method.
Signed-off-by: Baruch Siach
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Note that IRQ has not been initialized when kmalloc() fails.
Also, use DECLARE_BITMAP() to make the code clearer.
Signed-off-by: Baruch Siach
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
20 Jun, 2009
1 commit
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This is a driver for the ARM PrimeCell PL061 GPIO AMBA peripheral. The
driver is implemented using the gpiolib framework.This driver also includes support for the use of the PL061 as an interrupt
controller (secondary).Signed-off-by: Baruch Siach
Cc: David Brownell
Acked-by: Russell King
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
19 Jun, 2009
4 commits
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PCA9556 is the software-compatible predecessor to the PCA9557, so add it
to the supported I2C device ID table.Signed-off-by: Nate Case
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
On OpenFirmware platforms, it makes the most sense to get platform_data
from the device tree. Make an attempt to translate OF node properties
into platform_data struct before bailing out.Note that the implementation approach taken differs from other device
drivers that make use of device tree information. This is because I2C
chips are already registered automatically by of_i2c, so we can get by
with a small translator function in the driver.[akpm@linux-foundation.org: coding-style fixes]
[akpm@linux-foundation.org: kfree(NULL) is legal]
Signed-off-by: Nate Case
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The remove member of the spi_driver max7301_driver uses __devexit_p(), so
the remove function itself should be marked with __devexit. Even more so
considering the probe function is marked with __devinit.Signed-off-by: Mike Frysinger
Acked-by: Juergen Beisert
Cc: Dmitry Baryshkov
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add support to the PCA953x driver to use the GPIOLIB naming facility for
GPIOs.Signed-off-by: Daniel Silverstone
Cc: Ben Gardner
Cc: Jean Delvare
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
21 May, 2009
1 commit
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Signed-off-by: Michal Simek
04 Apr, 2009
1 commit
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* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (28 commits)
trivial: Update my email address
trivial: NULL noise: drivers/mtd/tests/mtd_*test.c
trivial: NULL noise: drivers/media/dvb/frontends/drx397xD_fw.h
trivial: Fix misspelling of "Celsius".
trivial: remove unused variable 'path' in alloc_file()
trivial: fix a pdlfush -> pdflush typo in comment
trivial: jbd header comment typo fix for JBD_PARANOID_IOFAIL
trivial: wusb: Storage class should be before const qualifier
trivial: drivers/char/bsr.c: Storage class should be before const qualifier
trivial: h8300: Storage class should be before const qualifier
trivial: fix where cgroup documentation is not correctly referred to
trivial: Give the right path in Documentation example
trivial: MTD: remove EOL from MODULE_DESCRIPTION
trivial: Fix typo in bio_split()'s documentation
trivial: PWM: fix of #endif comment
trivial: fix typos/grammar errors in Kconfig texts
trivial: Fix misspelling of firmware
trivial: cgroups: documentation typo and spelling corrections
trivial: Update contact info for Jochen Hein
trivial: fix typo "resgister" -> "register"
...
03 Apr, 2009
2 commits
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We want to phase out the GPIO "autorequest" mechanism in gpiolib and
require all callers to use gpio_request().- Update feature-removal-schedule
- Update the documentation now
- Convert the relevant pr_warning() in gpiolib to a WARN()
so folk using this mechanism get a noisy stack dumpSome drivers and board init code will probably need to change.
Implementations not using gpiolib will still be fine; they are already
required to implement gpio_{request,free}() stubs.Signed-off-by: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Allow GPIOs in GPIOLIB chips to be named. This name is then used when the
GPIO is exported to sysfs, although it could be used elsewhere if deemed
useful.Signed-off-by: Daniel Silverstone
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
30 Mar, 2009
1 commit
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Signed-off-by: Matt LaPlante
Acked-by: Randy Dunlap
Signed-off-by: Jiri Kosina
25 Mar, 2009
1 commit
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Cc: Michael Buesch
Acked-by: Greg Kroah-Hartman
Signed-off-by: Kay Sievers
30 Jan, 2009
1 commit
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Fix request-already-requested handling in gpio_request().
Signed-off-by: Magnus Damm
Acked-by: David Brownell
Cc: [2.6.28.x]
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
16 Jan, 2009
1 commit
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A number of drivers in drivers/gpio return -ENODEV when confronted with
missing setup parameters such as the platform data. However, returning
-ENODEV causes the driver layer to silently ignore the driver as it
assumes the probe did not find anything and was only speculative.To make life easier to discern why a driver is not being attached, change
to returning -EINVAL, which is a better description of the fact that the
driver data was not valid.Also add a set of dev_dbg() statements to the error paths to provide an
better explanation of the error as there may be more that one point in the
driver.Signed-off-by: Ben Dooks
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
07 Jan, 2009
4 commits
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* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: (60 commits)
uio: make uio_info's name and version const
UIO: Documentation for UIO ioport info handling
UIO: Pass information about ioports to userspace (V2)
UIO: uio_pdrv_genirq: allow custom irq_flags
UIO: use pci_ioremap_bar() in drivers/uio
arm: struct device - replace bus_id with dev_name(), dev_set_name()
libata: struct device - replace bus_id with dev_name(), dev_set_name()
avr: struct device - replace bus_id with dev_name(), dev_set_name()
block: struct device - replace bus_id with dev_name(), dev_set_name()
chris: struct device - replace bus_id with dev_name(), dev_set_name()
dmi: struct device - replace bus_id with dev_name(), dev_set_name()
gadget: struct device - replace bus_id with dev_name(), dev_set_name()
gpio: struct device - replace bus_id with dev_name(), dev_set_name()
gpu: struct device - replace bus_id with dev_name(), dev_set_name()
hwmon: struct device - replace bus_id with dev_name(), dev_set_name()
i2o: struct device - replace bus_id with dev_name(), dev_set_name()
IA64: struct device - replace bus_id with dev_name(), dev_set_name()
i7300_idle: struct device - replace bus_id with dev_name(), dev_set_name()
infiniband: struct device - replace bus_id with dev_name(), dev_set_name()
ISDN: struct device - replace bus_id with dev_name(), dev_set_name()
... -
Minor updates to the pca953x GPIO expander driver: handle several more
compatible parts, and stop assuming that the I2C layer's return codes are
garbage (that's now been fixed).Signed-off-by: David Brownell
Cc: Eric Miao
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Provide a static debounce configuration mechanism for twl4030 GPIOs,
replacing the previous dynamic one. The single user of that mechanism was
for MMC card detect debouncing.Boards can provide a bitmask saying which GPIOs to debounce (30 msec).
It's always enabled for pins with the MMC card-detect/VMMCx link active,
so most boards won't need to set the debounce mask.This is a net code shrink, including runtime footprint.
Signed-off-by: David Brownell
Signed-off-by: Tony Lindgren
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Kay Sievers
Signed-off-by: Greg Kroah-Hartman
20 Nov, 2008
1 commit
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There are already various drivers having bigger label than 12 bytes. Most
of them fit well under 20 bytes but make column width exact so that
oversized labels don't mess up output alignment.Signed-off-by: Jarkko Nikula
Acked-by: David Brownell
Cc: [2.6.26.x, 2.6.26.x, 2.6.27.x]
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
