24 Aug, 2020
1 commit
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Replace the existing /* fall through */ comments and its variants with
the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary
fall-through markings when it is the case.[1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through
Signed-off-by: Gustavo A. R. Silva
30 Jun, 2020
1 commit
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Enables probing via the ACPI PRP0001 route but more is mostly about
removing examples of this that might get copied into new drivers.Also fixes
drivers/mux/adgs1408.c:112:34: warning: unused variable 'adgs1408_of_match
as has been reported recently.Fixes: e9e40543ad5b ("spi: Add generic SPI multiplexer")
Reported-by: kbuild test robot
Signed-off-by: Andy Shevchenko
Signed-off-by: Peter Rosin
Link: https://lore.kernel.org/r/20200529145726.5708-1-peda@axentia.se
Signed-off-by: Greg Kroah-Hartman
30 Jul, 2019
1 commit
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Introduce wrappers for {bus/driver/class}_find_device() to
locate devices by its of_node.Cc: Maarten Lankhorst
Cc: Maxime Ripard
Cc: dri-devel@lists.freedesktop.org
Cc: David Airlie
Cc: Daniel Vetter
Cc: devicetree@vger.kernel.org
Cc: Florian Fainelli
Cc: Frank Rowand
Cc: Heiko Stuebner
Cc: Liam Girdwood
Cc: linux-i2c@vger.kernel.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-spi@vger.kernel.org
Cc: Mathieu Poirier
Cc: Rob Herring
Cc: Srinivas Kandagatla
Cc: Takashi Iwai
Cc: Alan Tull
Cc: linux-fpga@vger.kernel.org
Cc: Peter Rosin
Cc: Florian Fainelli
Cc: Heiner Kallweit
Cc: "David S. Miller"
Cc: Andrew Lunn
Cc: Liam Girdwood
Cc: "Rafael J. Wysocki"
Cc: Thor Thayer
Cc: Jiri Slaby
Cc: Andrew Lunn
Cc: Peter Rosin
Signed-off-by: Suzuki K Poulose
Acked-by: Lee Jones
Acked-by: Wolfram Sang # I2C part
Acked-by: Moritz Fischer # For FPGA part
Acked-by: Mark Brown
Link: https://lore.kernel.org/r/20190723221838.12024-3-suzuki.poulose@arm.com
Signed-off-by: Greg Kroah-Hartman
21 Jun, 2019
1 commit
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Generic register bitfield-based multiplexer that controls the multiplexer
producer defined under a parent node.
The driver corresponding to parent node provides register read/write
capabilities.Signed-off-by: Pankaj Bansal
Signed-off-by: Peter Rosin
Signed-off-by: Greg Kroah-Hartman
23 Oct, 2018
1 commit
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Pull GPIO updates from Linus Walleij:
"This is the bulk of GPIO changes for the v4.20 series:Core changes:
- A patch series from Hans Verkuil to make it possible to
enable/disable IRQs on a GPIO line at runtime and drive GPIO lines
as output without having to put/get them from scratch.The irqchip callbacks have been improved so that they can use only
the fastpatch callbacks to enable/disable irqs like any normal
irqchip, especially the gpiod_lock_as_irq() has been improved to be
callable in fastpath context.A bunch of rework had to be done to achieve this but it is a big
win since I never liked to restrict this to slowpath. The only call
requireing slowpath was try_module_get() and this is kept at the
.request_resources() slowpath callback. In the GPIO CEC driver this
is a big win sine a single line is used for both outgoing and
incoming traffic, and this needs to use IRQs for incoming traffic
while actively driving the line for outgoing traffic.- Janusz Krzysztofik improved the GPIO array API to pass a "cookie"
(struct gpio_array) and a bitmap for setting or getting multiple
GPIO lines at once.This improvement orginated in a specific need to speed up an OMAP1
driver and has led to a much better API and real performance gains
when the state of the array can be used to bypass a lot of checks
and code when we want things to go really fast.The previous code would minimize the number of calls down to the
driver callbacks assuming the CPU speed was orders of magnitude
faster than the I/O latency, but this assumption was wrong on
several platforms: what we needed to do was to profile and improve
the speed on the hot path of the array functions and this change is
now completed.- Clean out the painful and hard to grasp BNF experiments from the
device tree bindings. Future approaches are looking into using JSON
schema for this purpose. (Rob Herring is floating a patch series.)New drivers:
- The RCAR driver now supports r8a774a1 (RZ/G2M).
- Synopsys GPIO via CREGs driver.
Major improvements:
- Modernization of the EP93xx driver to use irqdomain and other
contemporary concepts.- The ingenic driver has been merged into the Ingenic pin control
driver and removed from the GPIO subsystem.- Debounce support in the ftgpio010 driver"
* tag 'gpio-v4.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (116 commits)
gpio: Clarify kerneldoc on gpiochip_set_chained_irqchip()
gpio: Remove unused 'irqchip' argument to gpiochip_set_cascaded_irqchip()
gpio: Drop parent irq assignment during cascade setup
mmc: pwrseq_simple: Fix incorrect handling of GPIO bitmap
gpio: fix SNPS_CREG kconfig dependency warning
gpiolib: Initialize gdev field before is used
gpio: fix kernel-doc after devres.c file rename
gpio: fix doc string for devm_gpiochip_add_data() to not talk about irq_chip
gpio: syscon: Fix possible NULL ptr usage
gpiolib: Show correct direction from the beginning
pinctrl: msm: Use init_valid_mask exported function
gpiolib: Add init_valid_mask exported function
GPIO: add single-register GPIO via CREG driver
dt-bindings: Document the Synopsys GPIO via CREG bindings
gpio: mockup: use device properties instead of platform_data
gpio: Slightly more helpful debugfs
gpio: omap: Remove set but not used variable 'dev'
gpio: omap: drop omap_gpio_list
Accept partial 'gpio-line-names' property.
gpio: omap: get rid of the conditional PM runtime calls
...
12 Oct, 2018
1 commit
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The file is GPL v2 or later.
Acked-by: Mircea Caprioru
Signed-off-by: Peter Rosin
Signed-off-by: Greg Kroah-Hartman
13 Sep, 2018
2 commits
-
In order to make use of array info obtained from gpiod_get_array() and
speed up processing of arrays matching single GPIO chip layout, that
information must be passed to get/set array functions. Extend the
functions' API with that additional parameter and update all users.
Pass NULL if a user builds an array itself from single GPIOs.Cc: Jonathan Corbet
Cc: Miguel Ojeda Sandonis
Cc: Geert Uytterhoeven
Cc: Sebastien Bourdelin
Cc: Lukas Wunner
Cc: Peter Korsgaard
Cc: Peter Rosin
Cc: Andrew Lunn
Cc: Florian Fainelli
Cc: "David S. Miller"
Cc: Rojhalat Ibrahim
Cc: Dominik Brodowski
Cc: Russell King
Cc: Kishon Vijay Abraham I
Cc: Tony Lindgren
Cc: Lars-Peter Clausen
Cc: Michael Hennerich
Cc: Jonathan Cameron
Cc: Hartmut Knaack
Cc: Peter Meerwald-Stadler
Cc: Greg Kroah-Hartman
Cc: Jiri Slaby
Cc: Yegor Yefremov
Cc: Uwe Kleine-König
Signed-off-by: Janusz Krzysztofik
Acked-by: Ulf Hansson
Signed-off-by: Linus Walleij -
Most users of get/set array functions iterate consecutive bits of data,
usually a single integer, while processing array of results obtained
from, or building an array of values to be passed to those functions.
Save time wasted on those iterations by changing the functions' API to
accept bitmaps.All current users are updated as well.
More benefits from the change are expected as soon as planned support
for accepting/passing those bitmaps directly from/to respective GPIO
chip callbacks if applicable is implemented.Cc: Jonathan Corbet
Cc: Miguel Ojeda Sandonis
Cc: Sebastien Bourdelin
Cc: Lukas Wunner
Cc: Peter Korsgaard
Cc: Peter Rosin
Cc: Andrew Lunn
Cc: Florian Fainelli
Cc: "David S. Miller"
Cc: Rojhalat Ibrahim
Cc: Dominik Brodowski
Cc: Russell King
Cc: Kishon Vijay Abraham I
Cc: Tony Lindgren
Cc: Lars-Peter Clausen
Cc: Michael Hennerich
Cc: Jonathan Cameron
Cc: Hartmut Knaack
Cc: Peter Meerwald-Stadler
Cc: Greg Kroah-Hartman
Cc: Jiri Slaby
Cc: Yegor Yefremov
Cc: Uwe Kleine-König
Signed-off-by: Janusz Krzysztofik
Acked-by: Ulf Hansson
Reviewed-by: Geert Uytterhoeven
Tested-by: Geert Uytterhoeven
Signed-off-by: Linus Walleij
02 Aug, 2018
1 commit
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This patch adds basic support for Analog Device ADGS1408/09 SPI mux
controller.The device is probed and set to a disabled state. It uses the new mux
controller framework.Signed-off-by: Mircea Caprioru
Signed-off-by: Peter Rosin
Signed-off-by: Greg Kroah-Hartman
23 Apr, 2018
1 commit
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Use the new probe style for i2c drivers.
Signed-off-by: Peter Rosin
Signed-off-by: Greg Kroah-Hartman
02 Feb, 2018
1 commit
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Pull char/misc driver updates from Greg KH:
"Here is the big pull request for char/misc drivers for 4.16-rc1.There's a lot of stuff in here. Three new driver subsystems were added
for various types of hardware busses:- siox
- slimbus
- soundwireas well as a new vboxguest subsystem for the VirtualBox hypervisor
drivers.There's also big updates from the FPGA subsystem, lots of Android
binder fixes, the usual handful of hyper-v updates, and lots of other
smaller driver updates.All of these have been in linux-next for a long time, with no reported
issues"* tag 'char-misc-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (155 commits)
char: lp: use true or false for boolean values
android: binder: use VM_ALLOC to get vm area
android: binder: Use true and false for boolean values
lkdtm: fix handle_irq_event symbol for INT_HW_IRQ_EN
EISA: Delete error message for a failed memory allocation in eisa_probe()
EISA: Whitespace cleanup
misc: remove AVR32 dependencies
virt: vbox: Add error mapping for VERR_INVALID_NAME and VERR_NO_MORE_FILES
soundwire: Fix a signedness bug
uio_hv_generic: fix new type mismatch warnings
uio_hv_generic: fix type mismatch warnings
auxdisplay: img-ascii-lcd: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE
uio_hv_generic: add rescind support
uio_hv_generic: check that host supports monitor page
uio_hv_generic: create send and receive buffers
uio: document uio_hv_generic regions
doc: fix documentation about uio_hv_generic
vmbus: add monitor_id and subchannel_id to sysfs per channel
vmbus: fix ABI documentation
uio_hv_generic: use ISR callback method
...
09 Jan, 2018
2 commits
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Remove all free-text license texts.
This is done on a quest to remove the 700+ different ways that files in
the kernel describe the GPL license text.No copyright headers or other non-license-description text was removed.
Reviewed-by: Philippe Ombredanne
Acked-by: Philipp Zabel
Signed-off-by: Peter Rosin
Signed-off-by: Greg Kroah-Hartman -
class_find_device already does a get_device on the returned device.
So the device returned by of_find_mux_chip_by_node is already referenced
and we should not reference it again (and unref it on error).Signed-off-by: Hans de Goede
Signed-off-by: Peter Rosin
Cc: stable
Signed-off-by: Greg Kroah-Hartman
29 Aug, 2017
1 commit
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Make this const as it is only stored in the type field of a device
structure, which is const.
Done using Coccinelle.Signed-off-by: Bhumika Goyal
Signed-off-by: Peter Rosin
Signed-off-by: Greg Kroah-Hartman
28 Aug, 2017
2 commits
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Preserve the module names with Makefile additions.
Signed-off-by: Peter Rosin
Signed-off-by: Greg Kroah-Hartman -
Now that we have a custom printf format specifier, convert users of
full_name to use %pOF instead. This is preparation to remove storing
of the full path string for each node.Signed-off-by: Rob Herring
Signed-off-by: Peter Rosin
Signed-off-by: Greg Kroah-Hartman
17 Jul, 2017
2 commits
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Fixes an obvious and nasty typo.
Fixes: a3b02a9c6591 ("mux: minimal mux subsystem")
Signed-off-by: Kuppuswamy Sathyanarayanan
Signed-off-by: Peter Rosin
Signed-off-by: Greg Kroah-Hartman -
The MULTIPLEXER question in the Kconfig might be confusing and is
of dubious value. Remove it. This makes consumers responsible for
selecting MULTIPLEXER, which they already do.Signed-off-by: Peter Rosin
Reported-by: Linus Torvalds
Signed-off-by: Greg Kroah-Hartman
09 Jun, 2017
1 commit
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COMPILE_TEST makes no sense when I2C is disabled, as the driver cannot compile
in that configuration:drivers/mux/mux-adg792a.c: In function 'adg792a_write_cmd':
drivers/mux/mux-adg792a.c:34:9: error: implicit declaration of function 'i2c_smbus_write_byte_data'; did you mean 'i2c_set_clientdata'? [-Werror=implicit-function-declaration]
drivers/mux/mux-adg792a.o: In function `adg792a_driver_init':
mux-adg792a.c:(.init.text+0x14): undefined reference to `i2c_register_driver'
drivers/mux/mux-adg792a.o: In function `adg792a_probe':
mux-adg792a.c:(.text.adg792a_probe+0x94): undefined reference to `i2c_smbus_write_byte_data'
drivers/mux/mux-adg792a.o: In function `adg792a_set':
mux-adg792a.c:(.text.adg792a_set+0x80): undefined reference to `i2c_smbus_write_byte_data'Fixes: afda08c4caa9 ("mux: adg792a: add mux controller driver for ADG792A/G")
Signed-off-by: Arnd Bergmann
Reviewed-by: Peter Rosin
Signed-off-by: Greg Kroah-Hartman
03 Jun, 2017
4 commits
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This adds a driver for mmio-based syscon multiplexers controlled by
bitfields in a syscon register range.Signed-off-by: Philipp Zabel
Signed-off-by: Peter Rosin
Signed-off-by: Greg Kroah-Hartman -
Analog Devices ADG792A/G is a triple 4:1 mux.
Reviewed-by: Jonathan Cameron
Signed-off-by: Peter Rosin
Signed-off-by: Greg Kroah-Hartman -
The driver builds a single multiplexer controller using a number
of gpio pins. For N pins, there will be 2^N possible multiplexer
states. The GPIO pins can be connected (by the hardware) to several
multiplexers, which in that case will be operated in parallel.Reviewed-by: Jonathan Cameron
Signed-off-by: Peter Rosin
Reviewed-by: Philipp Zabel
Signed-off-by: Greg Kroah-Hartman -
Add a new minimalistic subsystem that handles multiplexer controllers.
When multiplexers are used in various places in the kernel, and the
same multiplexer controller can be used for several independent things,
there should be one place to implement support for said multiplexer
controller.A single multiplexer controller can also be used to control several
parallel multiplexers, that are in turn used by different subsystems
in the kernel, leading to a need to coordinate multiplexer accesses.
The multiplexer subsystem handles this coordination.Thanks go out to Lars-Peter Clausen, Jonathan Cameron, Rob Herring,
Wolfram Sang, Paul Gortmaker, Dan Carpenter, Colin Ian King, Greg
Kroah-Hartman and last but certainly not least to Philipp Zabel for
helpful comments, reviews, patches and general encouragement!Reviewed-by: Jonathan Cameron
Signed-off-by: Peter Rosin
Reviewed-by: Philipp Zabel
Tested-by: Philipp Zabel
Signed-off-by: Greg Kroah-Hartman
