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Some systems using this bus sometimes have very basic devices such as
regulators on the bus, so the I2C bus master needs to be loaded early.
This also matches the behavior of many other I2C bus master drivers.
Therefore initialize via subsys_initcall().
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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Faulty slave devices might drive SDA low after a transfer finishes. So,
when this scenario is detected, have the master generate up to 9 extra
clocks until the SDA is properly released.
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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Minor cleanups. Mostly removing assignments in if statements to get
rid of checkpatch errors.
Signed-off-by: Juerg Haefliger <juergh@gmail.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
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Add support for the 1.5V voltage monitoring input (in7) of the
SMSC SCH5127 chip.
Signed-off-by: Juerg Haefliger <juergh@gmail.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
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EMC1423 uses the similar register and adds a hardware shutdown pin to
protect exceed temperature. This function is set by resistor; it's not
necessary to do anything in the driver except add the emc1423 pid of 0x23.
Signed-off-by: Jekyll Lai <jekyll_lai@wistron.com>
[Updated Kconfig/comments and minor further changes asked for by the hwmon
maintainers]
Signed-off-by: Alan Cox <alan@linux.intel.com>
[Fixed checkpatch warning]
Signed-of--by: Jean Delvare <khali@linux-fr.org>
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I had to look it up for one user, so we might as well store it in the
driver documentation.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
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This is the same case as fschmd, from which the code was copied as far
as I can see. So the same clean-up applies:
The WDIOC_GETSUPPORT ioctl only needs a mutex because it operates on a
static variable. There is no good reason to keep this variable static,
so let's just make it non-static and drop the now useless mutex
altogether.
See the discussion at:
http://marc.info/?l=lm-sensors&m=125563869402323&w=2
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Hans de Goede <hdegoede@redhat.com>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
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As discussed one year ago, the WDIOC_GETSUPPORT ioctl only needs a
mutex because it operates on a static variable. There is no good
reason to keep this variable static, so let's just make it non-static
and drop the now useless mutex altogether.
See the discussion at:
http://marc.info/?l=lm-sensors&m=125563869402323&w=2
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Hans de Goede <hdegoede@redhat.com>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
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Added #define pr_fmt KBUILD_MODNAME ": " fmt
Converted printks to pr_<level>
Coalesced any long formats
Removed prefixes from formats
[JD: Optimize repeated debug messages]
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
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Added #define pr_fmt KBUILD_MODNAME ": " fmt
Converted printks to pr_<level>
Coalesced any long formats
Removed prefixes from formats
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
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Added #define pr_fmt KBUILD_MODNAME ": " fmt
Converted printks to pr_<level>
Coalesced any long formats
Removed prefixes from formats
[JD: Also convert debug messages]
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
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Added #define pr_fmt KBUILD_MODNAME ": " fmt
Converted printks to pr_<level>
Coalesced any long formats
Removed prefixes from formats
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
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Added #define pr_fmt KBUILD_MODNAME ": " fmt
Converted printks to pr_<level>
Coalesced any long formats
Removed prefixes from formats
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
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Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
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We have a standard intrusion detection interface now, drivers should
implement it. I've left the old interface in place for the time being,
with a deprecation warning, it will be removed later.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
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We have a standard intrusion detection interface now, drivers should
implement it. I've left the old interface in place for the time being,
with a deprecation warning, it will be removed later.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
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We have a standard intrusion detection interface now, drivers should
implement it. I've left the old interface in place for the time being,
with a deprecation warning, it will be removed later.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
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Functions set_fan_min() and set_fan_div() assume that the fan_div
values have already been read from the register. The driver currently
doesn't initialize them at load time, they are only set when function
via686a_update_device() is called. This means that set_fan_min() and
set_fan_div() misbehave if, for example, "sensors -s" is called
before any monitoring application (e.g. "sensors") is has been run.
Fix the problem by always initializing the fan_div values at device
bind time.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: stable@kernel.org
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
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The code triggers a false warning with older versions of gcc:
w83795.c: In function 'w83795_update_device':
w83795.c:475: warning: 'lsb' may be used uninitialized in this function
I admit that the code is a little tricky, but I see no way to write it
differently without hurting performance. So let's just silent the
warning with a needless initialization.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
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Trivial patch updating my email contact details due to change of
employer, and because I no longer have access to the previously used
domain.
Unfortunately I also no longer have access to any ads7828 hardware, but
am happy to support/maintain the driver if others are able to test
changes.
Signed-off-by: Steve Hardy <shardy@redhat.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
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arch/ia64/kernel/acpi.c:481: warning: format ‘%d’ expects type ‘int’, but argument 2 has type ‘long unsigned int’
Introduced by commit 05f2f274c8a8747bbfb13ac8ee0c27d5f2ad8510
[IA64] Avoid array overflow if there are too many cpus in SRAT table
Signed-off-by: Tony Luck <tony.luck@intel.com>
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drivers/xen/platform-pci.c:127: error: implicit declaration of function
'pci_request_region'
drivers/xen/platform-pci.c:165: error: implicit declaration of function
'pci_release_region'
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (39 commits)
i915/gtt: fix ordering causing DMAR errors on object teardown.
i915/gtt: fix ordering issues with status setup and DMAR
drm/i915/execbuffer: Reorder binding of objects to favour restrictions
drm/i915: If we hit OOM when allocating GTT pages, clear the aperture
drm/i915/evict: Ensure we completely cleanup on failure
drm/i915/execbuffer: Correctly clear the current object list upon EFAULT
drm/i915/debugfs: Show all objects in the gtt
drm/i915: Record AGP memory type upon error
drm/i915: Periodically flush the active lists and requests
drm/i915/gtt: Unmap the PCI pages after unbinding them from the GTT
drm/i915: Record the error batchbuffer on each ring
drm/i915: Include TLB miss overhead for computing WM
drm/i915: Propagate error from flushing the ring
drm/i915: detect & report PCH display error interrupts
drm/i915: cleanup rc6 code
drm/i915: fix rc6 enabling around suspend/resume
drm/i915: re-enable rc6 support for Ironlake+
drm/i915: Make the ring IMR handling private
drm/i915/ringbuffer: Simplify the ring irq refcounting
drm/i915/debugfs: Show the per-ring IMR
...
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git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6
* 'tools' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6:
tools: create power/x86/x86_energy_perf_policy
tools: create power/x86/turbostat
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* git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-ktest: (30 commits)
ktest: Ask for the manditory config options instead of just failing
ktest: Copy the last good and bad configs in config_bisect
ktest: For grub reboot, use run_ssh instead of run_command
ktest: Added force stop after success and failure
ktest: Parse off the directory name in useconfig for failures
ktest: Use different temp config name for minconfig
ktest: Updated the sample.conf for the latest options
ktest: Added compare script to test ktest.pl to sample.conf
ktest: Added config_bisect test type
ktest/cleanups: Added version 0.2, ssh as options
ktest: Output something easy to parse for failure or success
ktest: Allow a test case to undefine a default value
ktest: Use $output_config instead of typing $outputdir/.config
ktest: Write to stdout if no log file is given
ktest: Use oldnoconfig instead of yes command
ktest: Update the sample config file with more documentation
ktest: New TEST_START instead of using [], and use real SHA1s
ktest: Add poweroff after halt and powercycle after reboot
ktest: Add POST_INSTALL to allow initrds to be created
ktest: Added sample.conf, new %default option format
...
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git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen
* 'stable/xenbus' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
xen/xenbus: making backend support modular is too complex
xen/pci: Make xen-pcifront be dependent on XEN_XENBUS_FRONTEND
xen/xenbus: fixup checkpatch issues in xenbus_probe*
xen/netfront: select XEN_XENBUS_FRONTEND
xen/xenbus: clean up noise in xenbus_probe_frontend.c
xen/xenbus: clean up noise in xenbus_probe_backend.c
xen/xenbus: clean up noise in xenbus_probe.c
xen/xenbus: cleanup debug noise in xenbus_comms.c
xen/xenbus: clean up error handling
xen/xenbus: make frontend bus GPL
xen/xenbus: make sure backend bus is registered earlier
xenbus/frontend: register bus earlier
xen: remove xen/evtchn.h
xen: add backend driver support
xen: separate out frontend xenbus
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Fix writev() to not keep writing the first segment over and over again
instead of moving onto subsequent segments and update the NTFS entry in
MAINTAINERS to reflect that Tuxera Inc. now supports the NTFS driver.
Signed-off-by: Anton Altaparmakov <anton@tuxera.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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platform-pci is rather generic for a modular distro style kernel.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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This is the correct interface to use and something has broken the use
of the previous incorrect interface (which fails because the request
conflicts with the resources assigned for the PCI device itself
instead of nesting like the PCI interfaces do).
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: stable@kernel.org # 2.6.37 only
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The index is missing so the return is wrong.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
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Otherwise, we will not return error if write to MC13892_SWITCHERS5 failed.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Yong Shen <yong.shen@linaro.org>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
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We only expose the use and open counts to userspace, providing a tiny
bit of insight into what the API is up to.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
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It's a boolean value so use the type.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
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The recent introduction of standard regulator API logging macros means
that all our log messages have at least the function name in them and
logging that the constraints are for the regulator API is probably a
bit much.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
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If a consumer sets the same voltage range as is currently configured
for that consumer there's no need to run through setting the voltage
again. This pattern may occur with some CPUfreq implementations where
the same voltage range is used for multiple frequencies.
Reported-by: Saravana Kannan <skannan@codeaurora.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
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When cooperating with an external control source the regulator setup
may be changed underneath the API. Currently consumers can just redo
the regulator_set_voltage() to restore a previously set configuration
but provide an explicit API for doing this as optimsations in the
regulator_set_voltage() implementation will shortly prevent that.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
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No point exposing functions that aren't used elsewhere to the global
namespace and sparse warns about doing so.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
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Currently we notify a voltage change whenever we exit set_voltage(),
even if the change failed for some reason (eg, a constraints issue).
This shouldn't cause any substantial ill effects but is wasteful as
listeners get notified on noops. Fix this by moving the notification
into _do_set_voltage() and only notifying if we don't return an error.
Reported-by: Saravana Kannan <skannan@codeaurora.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
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Many regulator drivers implement voltage setting by looping through a
table of possible values, normally because the set of available voltages
can't be mapped onto selectors with simple calcuation. Factor out these
loops by providing a variant of set_voltage() which takes a selector rather
than a voltage range as an argument and implementing a loop through the
available selectors in the core.
This is not going to be suitable for use with all devices as when the
regulator voltage can be mapped onto selector values with a simple
calculation the linear scan through the available values will be more
expensive than just doing the calculation, especially for regulators
that provide fine grained voltage control.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
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Push all the callers of the chip set_voltage() operation out into a single
function to facilitiate future refactoring.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
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Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
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Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
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Since the MFD core for this device and the regulator drivers for these
devices can be built modular we should also support modular build of
the shared code for the regulator drivers, otherwise we try to link
built in code against modular code with unfortunate results.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
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add support for mc13892, tested on mx51 babbage board
Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Yong Shen <yong.shen@linaro.org>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
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move some common functions and micros of mc13783 regulaor driver to
a seperate file, which makes it possible for mc13892 to share code.
Signed-off-by: Yong Shen <yong.shen@linaro.org>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
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