Return proper error instead of 0 if regmap_init_i2c fails.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Venu Byravarasu <vbyravarasu@nvidia.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Since it's not like we will re-arrange the keys at run-time, it
seems proper to allow the keymap data to be const. This solves
a compilation warning in ux500.
Cc: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This patch converts the iTCO_wdt driver to use the multi-function device
driver model. It uses resources discovered by the lpc_ich driver, so that
it no longer does its own PCI scanning.
Signed-off-by: Aaron Sierra <asierra@xes-inc.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Add support for National Semiconductor / TI LM3533 lighting power chips.
This is the core driver which provides register access over I2C and
registers the ambient-light-sensor, LED and backlight sub-drivers.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This applies a supply alias for the db8500's fifth Nomadik i2c port.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This patch will enable probing to occur during a Device Tree enabled
boot. The IRQ base is expected to be located in and will be fetched
from the DT itself. We also prevent any of the db8500 regulators
from being registered here, as they will be enabled via DT instead.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Pass the probe function as part of the platform_driver struct and
register using the more common platform_driver_register call. In
subsequent patches we'll also add DT support into the struct.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
The driver calls of_match_node() with the arguments swapped.
Signed-off-by: Olof Johansson <olof@lixom.net>
Tested-by: Ying-Chun Liu <paul.liu@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This patch adds the Intel Centerton processor DeviceID for the
Integrated Legacy Block (ILB).
The ILB provides GPIO, SMBus, and Watchdog functionality.
Signed-off-by: Seth Heasley <seth.heasley@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This patch adds the Integrated Legacy Block DeviceID for the Centerton CPU. It will be used in the GPIO and Multifunction Devices driver.
Signed-off-by: Seth Heasley <seth.heasley@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This introduces 128 gpio bits (for each PCI device installed) with
working interrupt support.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>
Acked-by: Giancarlo Asnaghi <giancarlo.asnaghi@st.com>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This also introduces <asm/sta2x11.h> to export a function that is in
the base sta2x11 support patches. The header will increase with other
prototypes and constants over time.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>
Acked-by: Giancarlo Asnaghi <giancarlo.asnaghi@st.com>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Read CUST_ID from the device and log it for diagnostics.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
The driver still uses a custom cache implementation but the underlying
physical I/O is now done using the regmap API, saving some code and
avoiding allocating enormous scratch arrays on the stack.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
The removal of mach/io.h from most ARM platforms also set the range of
valid IO ports to be empty for most platforms when previously any 32
bit integer had been valid. This makes it impossible to add IO resources
as the added range is smaller than that of the root resource for IO ports.
Since we're not really using IO memory at all fix this by defining our
own root resource outside the normal tree and make that the parent of
all IO resources. This also ensures we won't conflict with read IO ports
if we ever run on a platform which happens to use them.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
A warning was being generated by the reference from tps65910_i2c_probe()
to tps65910_sleepinit() since the latter was annotated as __init but the
former was unannotated. Since these functions can only be called during
device init make them both __devinit, and while we're at it also annotate
tps65910_i2c_remove() __devexit for symmetry.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
The legacy suspend operations have been deprecated and printing warnings
on boot for over a year now.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Venu Byravarasu <vbyravarasu@nvidia.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
CONFIG_PM also covers runtime only PM.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Venu Byravarasu <vbyravarasu@nvidia.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This patch makes it possible to disable battery management
via a module boot parameter. When 'ab8500-core.no_bm=1' then
ab8500_btemp, ab8500_chargalg, ab8500_charger and ab8500_fg will
not be probed. This boot parameter is used for scripted testing
of the system.
Signed-off-by: Rickard Andersson <rickard.andersson@stericsson.com>
Reviewed-by: Jonas Aberg <jonas.aberg@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
If we are in the middle of an I2C transfer we need to deny suspend
of the AB8500 core. Implement an atomic reference counter for the
I2C operations to make sure we don't do this.
Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com>
Reviewed-by: Mattias Wallin <mattias.wallin@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Ensure that the AB interrupt is only handled at a time when
all core drivers are resumed. Ensure that the AB interrupt
is marked as a wakeup interrupt.
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Reviewed-by: Jonas Aberg <jonas.aberg@stericsson.com>
Reviewed-by: Mattias Wallin <mattias.wallin@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
The AB8505 and AB9540 has extended support for micro USB
resistance detection, used for detecting chargers. Let's
register resources for this resource. Let's also split off the
separate codec device for AB9540.
Signed-off-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Adds support for mc13xxx family ICs connected via i2c.
Signed-off-by: Marc Reilly <marc@cpdesign.com.au>
Acked-by: Oskar Schirmer <oskar@scara.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
All spi specific code is moved into a new module. The mc13xxx struct
moves to a new local include file by necessity.
A new config choice selects the SPI bus type support and by default is
value of SPI_MASTER to remain compatible with existing configs.
Signed-off-by: Marc Reilly <marc@cpdesign.com.au>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This change converts the mc13xxx core to use regmap rather than direct
spi r/w.
The spidev member of mc13xxx struct becomes redundant and is removed.
Extra debugging aids are added to mc13xxx_reg_rmw.
Mutex init is moved to before regmap init.
Signed-off-by: Marc Reilly <marc@cpdesign.com.au>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This patch abstracts the bus specific operations from the driver core.
Generic init and cleanup is consolidated into mc13xxx_common_*.
spi specific functions are renamed to reflect such.
(The irq member of the mc13xxx struct is no longer redundant, it's used
to store the irq for cleanup time).
Signed-off-by: Marc Reilly <marc@cpdesign.com.au>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
'ARM: OMAP3: USB: Fix the EHCI ULPI PHY reset issue' removes the include for
linux/gpio.h from omap-usb-host.c. This include indirectly includes plat/cpu.h
which is required by omap-usb-host.c. Fix the build breakage by including
it directly.
Acked-by: Keshava Munegowda <keshava_mgowda@ti.com>
Acked-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Russ Dill <Russ.Dill@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Adding support for device sleep through the external input control
signal "SLEEP".
Changing the SLEEP signal state can switch the device into SLEEP and
ACTIVE state.
Also adding sleep configuration for different resources so that they
should be keep on during sleep state of device.
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This patch adds device-tree support for dialog MFD and the binding
documentations.
Signed-off-by: Ying-Chun Liu (PaulLiu) <paul.liu@linaro.org>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Shawn Guo <shawn.guo@linaro.org>
Cc: Ashish Jangam <ashish.jangam@kpitcummins.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
The devm_* functions eliminate the need for manual resource releasing
and simplify error handling. Resources allocated by devm_* are freed
automatically on driver detach.
Signed-off-by: Pasi Savanainen <ext-pasi.m.savanainen@gmail.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
The mfd/asic3 driver does not currently define a irq_set_wake() handler.
Consequently any attempt to configure the 3 ASIC3 GPIO buttons - RECORD,
CALENDAR, HOME - as wakeup sources results in Unbalanced IRQ warnings
when the system is woken from sleep mode:
WARNING: at kernel/irq/manage.c:520 irq_set_irq_wake+0xc4/0xf8()
Unbalanced IRQ 342 wake disable
...
WARNING: at kernel/irq/manage.c:520 irq_set_irq_wake+0xc4/0xf8()
Unbalanced IRQ 337 wake disable
...
WARNING: at kernel/irq/manage.c:520 irq_set_irq_wake+0xc4/0xf8()
Unbalanced IRQ 339 wake disable
...
This patch adds a irq_set_wake() handler to the mfd/asic3 driver.
Signed-off-by: Paul Parsons <lost.distance@yahoo.com>
Cc: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
In ancient times it was necessary to manually initialize the bus field of an
spi_driver to spi_bus_type. These days this is done in spi_driver_register() so
we can drop the manual assignment.
The patch was generated using the following coccinelle semantic patch:
// <smpl>
@@
identifier _driver;
@@
struct spi_driver _driver = {
.driver = {
- .bus = &spi_bus_type,
},
};
// </smpl>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
The mfd/asic3 driver does not set the ds1wm_driver_data clock_rate field
before passing the structure to the DS1WM w1 busmaster driver.
This was not noticed before commit 26a6afb, because ds1wm_find_divisor()
unintentionally returned the correct divisor when a zero clock_rate was
passed in. However after that commit DS1WM fails a zero clock_rate:
ds1wm ds1wm: no suitable divisor for 0Hz clock
This patch sets the ds1wm_driver_data clock_rate field.
Signed-off-by: Paul Parsons <lost.distance@yahoo.com>
Acked-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Adding the gpio of RC583 in the list of rc583 mfd devices
to register the gpio driver of RC5T583.
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This patch is part of a set which adds PCMCIA/CF support for the hx4700.
This patch adds asic3_set_register() calls to:
1. Enable the PCMCIA/CF in asic3_probe().
2. Disable the PCMCIA/CF in asic3_remove().
Signed-off-by: Paul Parsons <lost.distance@yahoo.com>
Acked-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
There's no need to mark the chip revision registers as volatile, it won't
change at runtime so we can cache it from the device at startup.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This patch converts the drivers in drivers/mfd/* to use module_pci_driver()
macro which makes the code smaller and a bit simpler.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Cc: Andres Salomon <dilinger@queued.net>
Cc: Ira W. Snyder <iws@ovro.caltech.edu>
Cc: Florian Fainelli <florian@openwrt.org>
Cc: Denis Turischev <denis@compulab.co.il>
Cc: Harald Welte <HaraldWelte@viatech.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This driver works on many Intel chipsets, including the ICH6, ICH7,
ICH8, ICH9, ICH10, 3100, Series 5/3400 (Ibex Peak), Series 6/C200
(Cougar Point), and NM10 (Tiger Point).
Additional Intel chipsets should be easily supported if needed, eg the
ICH1-5, EP80579, etc.
Tested on QM67 (Cougar Point), QM57 (Ibex Peak), 3100 (Whitmore Lake),
and NM10 (Tiger Point).
Includes work from Jean Delvare:
- Resource leak removal during module load/unload
- GPIO API bit value enforcement
Also includes code cleanup from Guenter Roeck and Grant Likely.
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Signed-off-by: Aaron Sierra <asierra@xes-inc.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This driver currently creates resources for use by a forthcoming ICH
chipset GPIO driver. It could be expanded to create the resources for
converting the esb2rom (mtd) and iTCO_wdt (wdt), and potentially more,
drivers to use the mfd model.
Signed-off-by: Aaron Sierra <asierra@xes-inc.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
As long as there is no other non-const variable marked __initdata in the
same compilation unit it doesn't hurt. If there were one however
compilation would fail with
error: $variablename causes a section type conflict
because a section containing const variables is marked read only and so
cannot contain non-const variables.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Fix for an issue causing hibernation to hang on systems with highmem (that
practically means i386) due to broken memory management (bug introduced in 3.2,
so -stable material) and PM documentation update making the freezer
documentation follow the code again after some recent updates.
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Merge tag 'pm-for-3.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael J. Wysocki:
"Fix for an issue causing hibernation to hang on systems with highmem
(that practically means i386) due to broken memory management (bug
introduced in 3.2, so -stable material) and PM documentation update
making the freezer documentation follow the code again after some
recent updates."
* tag 'pm-for-3.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PM / Freezer / Docs: Update documentation about freezing of tasks
PM / Hibernate: fix the number of pages used for hibernate/thaw buffering
The autofs packet size has had a very unfortunate size problem on x86:
because the alignment of 'u64' differs in 32-bit and 64-bit modes, and
because the packet data was not 8-byte aligned, the size of the autofsv5
packet structure differed between 32-bit and 64-bit modes despite
looking otherwise identical (300 vs 304 bytes respectively).
We first fixed that up by making the 64-bit compat mode know about this
problem in commit a32744d4ab ("autofs: work around unhappy compat
problem on x86-64"), and that made a 32-bit 'systemd' work happily on a
64-bit kernel because everything then worked the same way as on a 32-bit
kernel.
But it turned out that 'automount' had actually known and worked around
this problem in user space, so fixing the kernel to do the proper 32-bit
compatibility handling actually *broke* 32-bit automount on a 64-bit
kernel, because it knew that the packet sizes were wrong and expected
those incorrect sizes.
As a result, we ended up reverting that compatibility mode fix, and
thus breaking systemd again, in commit fcbf94b9de.
With both automount and systemd doing a single read() system call, and
verifying that they get *exactly* the size they expect but using
different sizes, it seemed that fixing one of them inevitably seemed to
break the other. At one point, a patch I seriously considered applying
from Michael Tokarev did a "strcmp()" to see if it was automount that
was doing the operation. Ugly, ugly.
However, a prettier solution exists now thanks to the packetized pipe
mode. By marking the communication pipe as being packetized (by simply
setting the O_DIRECT flag), we can always just write the bigger packet
size, and if user-space does a smaller read, it will just get that
partial end result and the extra alignment padding will simply be thrown
away.
This makes both automount and systemd happy, since they now get the size
they asked for, and the kernel side of autofs simply no longer needs to
care - it could pad out the packet arbitrarily.
Of course, if there is some *other* user of autofs (please, please,
please tell me it ain't so - and we haven't heard of any) that tries to
read the packets with multiple writes, that other user will now be
broken - the whole point of the packetized mode is that one system call
gets exactly one packet, and you cannot read a packet in pieces.
Tested-by: Michael Tokarev <mjt@tls.msk.ru>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: David Miller <davem@davemloft.net>
Cc: Ian Kent <raven@themaw.net>
Cc: Thomas Meyer <thomas@m3y3r.de>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The file Documentation/power/freezing-of-tasks.txt was still referencing
the TIF_FREEZE flag, that was removed by the commit
d88e4cb67197d007fb778d62fe17360e970d5bfa(freezer: remove now unused
TIF_FREEZE).
This patch removes all the references of TIF_FREEZE that were left
behind.
Signed-off-by: Marcos Paulo de Souza <marcos.souza.org@gmail.com>
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
The actual internal pipe implementation is already really about
individual packets (called "pipe buffers"), and this simply exposes that
as a special packetized mode.
When we are in the packetized mode (marked by O_DIRECT as suggested by
Alan Cox), a write() on a pipe will not merge the new data with previous
writes, so each write will get a pipe buffer of its own. The pipe
buffer is then marked with the PIPE_BUF_FLAG_PACKET flag, which in turn
will tell the reader side to break the read at that boundary (and throw
away any partial packet contents that do not fit in the read buffer).
End result: as long as you do writes less than PIPE_BUF in size (so that
the pipe doesn't have to split them up), you can now treat the pipe as a
packet interface, where each read() system call will read one packet at
a time. You can just use a sufficiently big read buffer (PIPE_BUF is
sufficient, since bigger than that doesn't guarantee atomicity anyway),
and the return value of the read() will naturally give you the size of
the packet.
NOTE! We do not support zero-sized packets, and zero-sized reads and
writes to a pipe continue to be no-ops. Also note that big packets will
currently be split at write time, but that the size at which that
happens is not really specified (except that it's bigger than PIPE_BUF).
Currently that limit is the system page size, but we might want to
explicitly support bigger packets some day.
The main user for this is going to be the autofs packet interface,
allowing us to stop having to care so deeply about exact packet sizes
(which have had bugs with 32/64-bit compatibility modes). But user
space can create packetized pipes with "pipe2(fd, O_DIRECT)", which will
fail with an EINVAL on kernels that do not support this interface.
Tested-by: Michael Tokarev <mjt@tls.msk.ru>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: David Miller <davem@davemloft.net>
Cc: Ian Kent <raven@themaw.net>
Cc: Thomas Meyer <thomas@m3y3r.de>
Cc: stable@kernel.org # needed for systemd/autofs interaction fix
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Here are some tiny drivers/staging/ bugfixes. Some build fixes that
were recently reported, as well as one kfree bug that is hitting a
number of users.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-3.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging tree fixes from Greg Kroah-Hartman:
"Here are some tiny drivers/staging/ bugfixes. Some build fixes that
were recently reported, as well as one kfree bug that is hitting a
number of users."
* tag 'staging-3.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: ozwpan: Fix bug where kfree is called twice.
staging: octeon-ethernet: fix build errors by including interrupt.h
staging: zcache: fix Kconfig crypto dependency
staging: tidspbridge: remove usage of OMAP2_L4_IO_ADDRESS
