We now have two APIs for registering GPIOLIB_IRQCHIP, this is not
working and creating confusion. Add a TODO item to fix it up.
Cc: Thierry Reding <treding@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
We need to convert all old gpio irqchips to pass the irqchip
setup along when adding the gpio_chip.
For chained irqchips this is a pretty straight-forward
conversion.
Cc: Thierry Reding <treding@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
If an edge interrupt triggers while entering idle just before we save
GPIO datain register to saved_datain, the triggered GPIO will not be
noticed on wake-up. This is because the saved_datain and GPIO datain
are the same on wake-up in omap_gpio_unidle(). Let's fix this by
ignoring any pending edge interrupts for saved_datain.
This issue affects only idle states where the GPIO module internal
wake-up path is operational. For deeper idle states where the GPIO
module gets powered off, Linux generic wakeirqs must be used for
the padconf wake-up events with pinctrl-single driver. For examples,
please see "interrupts-extended" dts usage in many drivers.
This issue can be somewhat easily reproduced by pinging an idle system
with smsc911x Ethernet interface configured IRQ_TYPE_EDGE_FALLING. At
some point the smsc911x interrupts will just stop triggering. Also if
WLCORE WLAN is used with EDGE interrupt like it's documentation specifies,
we can see lost interrupts without this patch.
Note that in the long run we may be able to cancel entering idle by
returning an error in gpio_omap_cpu_notifier() on pending interrupts.
But let's fix the bug first.
Also note that because of the recent clean-up efforts this patch does
not apply directly to older kernels. This does fix a long term issue
though, and can be backported as needed.
Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: Grygorii Strashko <grygorii.strashko@ti.com>
Cc: Keerthy <j-keerthy@ti.com>
Cc: Ladislav Michl <ladis@linux-mips.org>
Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
Cc: Russell King <rmk+kernel@armlinux.org.uk>
Cc: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The IOP3xx has some elaborate code to directly slam the
GPIO lines multiplexed with I2C down low before enablement,
apparently a workaround for a hardware bug found in the
early chips.
After consulting the developer documentation for IOP80321
and IOP80331 I can clearly see that this may be useful for
IOP80321 family (mach-iop32x) but it is highly dubious for
any 80331 series or later chip: in these chips the lines
are not multiplexed for UARTs.
We convert the code to pass optional GPIO descriptors
and register these only on the 80321-based boards where
it makes sense, optionally obtain them in the driver and
use the gpiod_set_raw_value() to ascertain the line gets
driven low when needed.
The GPIO driver does not give the GPIO chip a reasonable
label so the patch also adds that so that these machine
descriptor tables can be used.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
The irq_startup() method returns an unsigned int, but in __irq_startup()
it is assigned to an int. However, nothing checks for errors, so any
error that is returned is ignored.
Remove the check for GPIO-input mode and the error return.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
We must never alter the register tables; these are read-only as far
as the driver is concerned. Constify these tables.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use local variables to store the base iomem address and regs table
pointer like omap_gpio_init_context() does. Not only does this make
the function neater, it also avoids unnecessary reloads of the same
data multiple times.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
When a GPIO block has the set/clear dataout registers implemented, it
also has the normal dataout register implemented. Reading this register
reads the current GPIO output state, and writing it sets the GPIOs to
the explicit state. This is the behaviour that we want when saving and
restoring the context, so use the dataout register exclusively.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
omap_set_gpio_irqenable() calls two helpers that are almost the same
apart from whether they set or clear bits. We can consolidate these:
- in the set/clear bit register case, we can perform the operation on
our saved context copy and write the appropriate set/clear register.
- otherwise, we can use our read-modify-write helper and invert enable
if irqenable_inv is set.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This function open-codes an exclusive-or bitwise operation using an
if() statement and explicitly setting or clearing the bit. Instead,
use an exclusive-or operation instead, and simplify the function.
We can combine the preprocessor conditional using IS_ENABLED() and
gain some additional compilation coverage.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
We already have a read-modify-write helper, but there's more that can
be done with a read-modify-write helper if it returned the new value.
Modify the existing helper to return the new value, and arrange for
it to take one less argument by having the caller compute the register
address.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
bank->level_mask is merely the bitwise or of the level detection
context which we have already read in this function. Rather than
repeating additional reads, compute it from the values already
read.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
One of the reasons for set_multiple() to exist is to allow multiple
GPIOs on the same chip to be changed simultaneously - see commit
5f42424354 ("gpiolib: allow simultaneous setting of multiple GPIO
outputs"):
- Simultaneous glitch-free setting of multiple pins on any kind of
parallel bus attached to GPIOs provided they all reside on the
same chip and bank.
In order for this to work, we should not use the atomic set/clear
registers, but instead read-modify-write the dataout register. We
already take the spinlock to ensure that happens atomically, so
move the code into the set_multiple() function and kill the two
helper functions.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
There is no reason to have helper functions to read the datain and
dataout registers when they are only used in one location. Simplify
this code to make it more readable.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
omap_gpio_get() calls omap_get_gpio_datain() or omap_get_gpio_dataout()
to read the GPIO state. These two functions are only called from this
method, so they don't add much value. Move their contents into
omap_gpio_get() method and simplify.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Architectures are single-copy atomic, which means that simply reading
a register is an inherently atomic operation. There is no need to
take a spinlock here.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Move these two functions to live beside the rest of the gpio chip
implementation, rather than in the middle of the irq chip
implementation.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The irq_ack method does not fit our hardware requirements. Edge
interrupts must be cleared before we handle them, and level interrupts
must be cleared after handling them.
We handle the interrupt clearance in our interrupt handler for edge IRQs
and in the unmask method for level IRQs.
Replace the irq_ack method with the no-op method from the dummy irq
chip.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The edge interrupt handling was effectively:
isr = ISR_reg & enabled;
if (bank->level_mask)
level_mask = bank->level_mask & enabled;
else
level_mask = 0;
edge = isr & ~level_mask;
When bank->level_mask is zero, level_mask will be computed as zero
anyway, so the if() statement is redundant. We are then left with:
isr = ISR_reg & enabled;
level_mask = bank->level_mask & enabled;
edge = isr & ~level_mask;
This can be simplified further to:
isr = ISR_reg & enabled;
edge = isr & ~bank->level_mask;
since the second mask with 'enabled' is redundant.
Improve the associated comment as well.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Commit c4791bc6e3 ("gpio: omap: drop omap_gpio_list") removed the
list head and addition to the list head of each gpio bank, but failed
to remove the list_del() call and the node inside struct gpio_bank.
Remove these too.
Fixes: c4791bc6e3 ("gpio: omap: drop omap_gpio_list")
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Commit 384ebe1c28 ("gpio/omap: Add DT support to GPIO driver") added
the register definition tables to the gpio-omap driver. Subsequently to
that commit, commit 4e962e8998 ("gpio/omap: remove cpu_is_omapxxxx()
checks from *_runtime_resume()") added definitions for irqstatus_raw*
registers to the legacy OMAP4 definitions, but missed the DT
definitions.
This causes an unintentional change of behaviour for the 1.101 errata
workaround on OMAP4 platforms. Fix this oversight.
Fixes: 4e962e8998 ("gpio/omap: remove cpu_is_omapxxxx() checks from *_runtime_resume()")
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Documentation states:
NOTE: There must be a correlation between the wake-up enable and
interrupt-enable registers. If a GPIO pin has a wake-up configured
on it, it must also have the corresponding interrupt enabled (on
one of the two interrupt lines).
Ensure that this condition is always satisfied by enabling the detection
events after enabling the interrupt, and disabling the detection before
disabling the interrupt. This ensures interrupt/wakeup events can not
happen until both the wakeup and interrupt enables correlate.
If we do any clearing, clear between the interrupt enable/disable and
trigger setting.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The stmmac driver currently ignores the GPIO flags which are passed via
devicetree because it operates with legacy GPIO numbers instead of GPIO
descriptors. stmmac assumes that the GPIO is "active HIGH" by default.
This can be overwritten by setting "snps,reset-active-low" to make the
reset line "active LOW".
Recent Amlogic SoCs (G12A which includes S905X2 and S905D2 as well as
G12B which includes S922X) use GPIOZ_14 or GPIOZ_15 for the PHY reset
line. These GPIOs are special because they are marked as "3.3V input
tolerant open drain" pins which means they can only drive the pin output
LOW (to reset the PHY) or to switch to input mode (to take the PHY out
of reset).
The GPIO subsystem already supports this with the GPIO_OPEN_DRAIN and
GPIO_OPEN_SOURCE flags in the devicetree bindings.
Add the stmmac PHY reset line specific active low parsing to gpiolib-of
so stmmac can be ported to GPIO descriptors while being backwards
compatible with device trees which use the "old" way of specifying the
polarity.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Keeping the irq_chip definition static shares it with multiple instances
of the altera gpiochip in the system. This is bad and now we get this
warning from gpiolib core:
"detected irqchip that is shared with multiple gpiochips: please fix the
driver."
Hence, move the irq_chip definition from being driver static into the
struct altera_gpio_chips. So a unique irq_chip is used for each gpiochip
instance.
Signed-off-by: Phil Reid <preid@electromag.com.au>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This driver was using the OF GPIO helper API, but barely used any of its
features and it cost more code than it saved. Also, the OF GPIO code is
now deprecated. Convert it to use a more standard setup and use devm
APIs for initialization to avoid the need for a remove function.
Our rationale for this change is that we are using the Xilinx GPIO with
resources injected using the MFD core rather than on the device tree
itself. Using platform rather than OF-specific resources allows this to
work for free.
Signed-off-by: Robert Hancock <hancock@sedsystems.ca>
Acked-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Fix the compiler warning with ARM64 config enabled
as the current mask assumes 32 bit by default.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
24 bit expanders use REG_ADDR_AI in combination with register addressing. This
conflicts with regmap which takes this bit as part of the register number,
i.e. a second cache entry is defined for accessed with REG_ADDR_AI being
set although on the chip it is the same register as with REG_ADDR_AI being
cleared.
The problem was introduced by
commit b32cecb46b ("gpio: pca953x: Extract the register address mangling to single function")
but only became visible by
commit 8b9f9d4dc5 ("regmap: verify if register is writeable before writing operations")
because before, the regmap size was effectively ignored and
pca953x_writeable_register() did know to ignore REG_ADDR_AI. Still, there
were two separate cache entries created.
Since the use of REG_ADDR_AI seems to be static we can work around this
issue by simply increasing the size of the regmap to cover the "virtual"
registers with REG_ADDR_AI being set. This only means that half of the
regmap buffer will be unused.
Reported-by: H. Nikolaus Schaller <hns@goldelico.com>
Suggested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
When a gpio_chip wants to request a descriptor from itself
using gpiochip_request_own_desc() it needs to be able to specify
fully how to use the descriptor, notably line inversion
semantics. The workaround in the gpiolib.c can be removed
and cases (such as SPI CS) where we need at times to request
a GPIO with line inversion semantics directly on a chip for
workarounds, can be fully supported with this call.
Fix up some users of the API that weren't really using the
last flag to set up the line as input or output properly
but instead just calling direction setting explicitly
after requesting the line.
Cc: Martin Sperl <kernel@martin.sperl.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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fitness for a particular purpose see the gnu general public license
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Based on 1 normalized pattern(s):
this program is free software you can redistribute it and or modify
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fitness for a particular purpose see the gnu general public license
for more details
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may be copied distributed and modified under those terms this
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without any warranty without even the implied warranty of
merchantability or fitness for a particular purpose see the gnu
general public license for more details
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The TI TCA9539 is a variant of the PCA953x GPIO expander,
with 16 GPIOs and interrupt functionality.
Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Here is another set of reviewed patches that adds SPDX tags to different
kernel files, based on a set of rules that are being used to parse the
comments to try to determine that the license of the file is
"GPL-2.0-or-later" or "GPL-2.0-only". Only the "obvious" versions of
these matches are included here, a number of "non-obvious" variants of
text have been found but those have been postponed for later review and
analysis.
There is also a patch in here to add the proper SPDX header to a bunch
of Kbuild files that we have missed in the past due to new files being
added and forgetting that Kbuild uses two different file names for
Makefiles. This issue was reported by the Kbuild maintainer.
These patches have been out for review on the linux-spdx@vger mailing
list, and while they were created by automatic tools, they were
hand-verified by a bunch of different people, all whom names are on the
patches are reviewers.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'spdx-5.2-rc3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull yet more SPDX updates from Greg KH:
"Here is another set of reviewed patches that adds SPDX tags to
different kernel files, based on a set of rules that are being used to
parse the comments to try to determine that the license of the file is
"GPL-2.0-or-later" or "GPL-2.0-only". Only the "obvious" versions of
these matches are included here, a number of "non-obvious" variants of
text have been found but those have been postponed for later review
and analysis.
There is also a patch in here to add the proper SPDX header to a bunch
of Kbuild files that we have missed in the past due to new files being
added and forgetting that Kbuild uses two different file names for
Makefiles. This issue was reported by the Kbuild maintainer.
These patches have been out for review on the linux-spdx@vger mailing
list, and while they were created by automatic tools, they were
hand-verified by a bunch of different people, all whom names are on
the patches are reviewers"
* tag 'spdx-5.2-rc3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (82 commits)
treewide: Add SPDX license identifier - Kbuild
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 225
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 224
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 223
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 222
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 221
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 220
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 218
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 217
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 216
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 215
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 214
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 213
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 211
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 210
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 209
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 207
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 203
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201
...
The Freescale SPI chipselects are special: while everyone else
is using "cs-gpios" the Freescale platforms just use "gpios".
Fix this by responding with "gpios" when asking for "cs-gpios"
in a freescale device node, so we hide this pecularity from
the SPI core.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
We now have a resource managed version of i2c_new_dummy_device() that
also returns an actual error code instead of a NULL-pointer. Use it
in the max732x GPIO driver and simplify code in the process.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Use the managed variant of gpiochip_add_data() and remove the call to
gpiochip_remove().
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Based on 1 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of version 2 of the gnu general public license as
published by the free software foundation
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference in 107 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Steve Winslow <swinslow@gmail.com>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190528171438.615055994@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Based on 1 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms and conditions of the gnu general public license
version 2 as published by the free software foundation this program
is distributed in the hope it will be useful but without any
warranty without even the implied warranty of merchantability or
fitness for a particular purpose see the gnu general public license
for more details you should have received a copy of the gnu general
public license along with this program if not see http www gnu org
licenses
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference in 228 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Steve Winslow <swinslow@gmail.com>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190528171438.107155473@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Based on 1 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation either version 2 of the license this
program is distributed in the hope that it will be useful but
without any warranty without even the implied warranty of
merchantability or fitness for a particular purpose see the gnu
general public license for more details you should have received a
copy of the gnu general public license along with this program if
not write to the free software foundation inc 59 temple place suite
330 boston ma 02111 1307 usa
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference in 3 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Steve Winslow <swinslow@gmail.com>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190528170026.251475812@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Based on 1 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation this program is
distributed in the hope that it will be useful but without any
warranty without even the implied warranty of merchantability or
fitness for a particular purpose see the gnu general public license
for more details you should have received a copy of the gnu general
public license along with this program if not write to the free
software foundation inc 675 mass ave cambridge ma 02139 usa
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference in 44 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Steve Winslow <swinslow@gmail.com>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190528170025.980374610@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Based on 1 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation you should have received a
copy of the gnu general public license along with this program if
not write to the free software foundation inc 59 temple place suite
330 boston ma 02111 1307 usa
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference in 1 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070034.665915326@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Based on 1 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation this program is
distributed in the hope that it will be useful but without any
warranty without even the implied warranty of merchantability or
fitness for a particular purpose see the gnu general public license
for more details
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference in 655 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070034.575739538@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Based on 1 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation version 2 of the license this program
is distributed in the hope that it will be useful but without any
warranty without even the implied warranty of merchantability or
fitness for a particular purpose see the gnu general public license
for more details you should have received a copy of the gnu general
public license along with this program if not write to the free
software foundation inc 59 temple place suite 330 boston ma 02111
1307 usa
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference in 83 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070034.021731668@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Based on 3 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation either version 2 of the license or at
your option any later version this program is distributed in the
hope that it will be useful but without any warranty without even
the implied warranty of merchantability or fitness for a particular
purpose see the gnu general public license for more details
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation either version 2 of the license or at
your option any later version [author] [kishon] [vijay] [abraham]
[i] [kishon]@[ti] [com] this program is distributed in the hope that
it will be useful but without any warranty without even the implied
warranty of merchantability or fitness for a particular purpose see
the gnu general public license for more details
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation either version 2 of the license or at
your option any later version [author] [graeme] [gregory]
[gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i]
[kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema]
[hk] [hemahk]@[ti] [com] this program is distributed in the hope
that it will be useful but without any warranty without even the
implied warranty of merchantability or fitness for a particular
purpose see the gnu general public license for more details
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-or-later
has been chosen to replace the boilerplate/reference in 1105 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Based on 1 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation either version 2 of the license or at
your option any later version
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-or-later
has been chosen to replace the boilerplate/reference in 3029 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Based on 1 normalized pattern(s):
licensed under the gpl 2 or later
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-or-later
has been chosen to replace the boilerplate/reference in 82 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190524100845.150836982@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Make the mb86s7x GPIO block discoverable via ACPI. In addition, add
support for ACPI GPIO interrupts routed via platform interrupts, by
wiring the two together via the to_irq() gpiochip callback.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
em_gio_probe() uses managed initializations for everything but creating
the IRQ domain. Hence in most failure cases, no cleanup needs to be
performed at all.
Make this clearer for the casual reviewer by returning early, instead of
jumping to an out-of-sight label.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
There is no need to print error messages when memory allocations or
related operations fail, as the core will take care of that.
Change the returned error codes to -ENOMEM to match the failure cause
while at it.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Use standard functions. Eventually we will be able to drop all
checks and just assign irq_domain_translate_twocell() to this
callback.
Cc: Brian Masney <masneyb@onstation.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This feature is deprecated, it is helpful to inform users about
this. I'm resisting the temptation to add "depends on BROKEN"
to this, but saving that for later.
Reviewed-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Based on 1 normalized pattern(s):
this program is free software you can redistribute it and or modify
i t under the terms of the gnu general public license as published
by th e free software foundation either version 2 of the license or
at you r option any later version
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-or-later
has been chosen to replace the boilerplate/reference in 1 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190523091650.375638818@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Based on 1 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation either version 2 of the license or at
your option any later version this program is distributed in the
hope that it will be useful but without any warranty without even
the implied warranty of merchantability or fitness for a particular
purpose see the gnu general public license for more details you
should have received a copy of the gnu general public license along
with this program if not write to the free software foundation inc
675 mass ave cambridge ma 02139 usa
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-or-later
has been chosen to replace the boilerplate/reference in 441 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190520071858.739733335@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The gpio-adp5588 driver uses interfaces that are provided by
GPIOLIB_IRQCHIP, so select that symbol in its Kconfig entry.
Fixes these build errors:
../drivers/gpio/gpio-adp5588.c: In function ‘adp5588_irq_handler’:
../drivers/gpio/gpio-adp5588.c:266:26: error: ‘struct gpio_chip’ has no member named ‘irq’
dev->gpio_chip.irq.domain, gpio));
^
../drivers/gpio/gpio-adp5588.c: In function ‘adp5588_irq_setup’:
../drivers/gpio/gpio-adp5588.c:298:2: error: implicit declaration of function ‘gpiochip_irqchip_add_nested’ [-Werror=implicit-function-declaration]
ret = gpiochip_irqchip_add_nested(&dev->gpio_chip,
^
../drivers/gpio/gpio-adp5588.c:307:2: error: implicit declaration of function ‘gpiochip_set_nested_irqchip’ [-Werror=implicit-function-declaration]
gpiochip_set_nested_irqchip(&dev->gpio_chip,
^
Fixes: 459773ae8d ("gpio: adp5588-gpio: support interrupt controller")
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: linux-gpio@vger.kernel.org
Reviewed-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Based on 2 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation either version 2 of the license or at
your option any later version this program is distributed in the
hope that it will be useful but without any warranty without even
the implied warranty of merchantability or fitness for a particular
purpose see the gnu general public license for more details you
should have received a copy of the gnu general public license along
with this program if not see http www gnu org licenses
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation either version 2 of the license or at
your option any later version this program is distributed in the
hope that it will be useful but without any warranty without even
the implied warranty of merchantability or fitness for a particular
purpose see the gnu general public license for more details [based]
[from] [clk] [highbank] [c] you should have received a copy of the
gnu general public license along with this program if not see http
www gnu org licenses
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-or-later
has been chosen to replace the boilerplate/reference in 355 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Jilayne Lovejoy <opensource@jilayne.com>
Reviewed-by: Steve Winslow <swinslow@gmail.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190519154041.837383322@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add SPDX license identifiers to all Make/Kconfig files which:
- Have no license information of any form
These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:
GPL-2.0-only
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Pull IRQ chip updates from Ingo Molnar:
"A late irqchips update:
- New TI INTR/INTA set of drivers
- Rewrite of the stm32mp1-exti driver as a platform driver
- Update the IOMMU MSI mapping API to be RT friendly
- A number of cleanups and other low impact fixes"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (34 commits)
iommu/dma-iommu: Remove iommu_dma_map_msi_msg()
irqchip/gic-v3-mbi: Don't map the MSI page in mbi_compose_m{b, s}i_msg()
irqchip/ls-scfg-msi: Don't map the MSI page in ls_scfg_msi_compose_msg()
irqchip/gic-v3-its: Don't map the MSI page in its_irq_compose_msi_msg()
irqchip/gicv2m: Don't map the MSI page in gicv2m_compose_msi_msg()
iommu/dma-iommu: Split iommu_dma_map_msi_msg() in two parts
genirq/msi: Add a new field in msi_desc to store an IOMMU cookie
arm64: arch_k3: Enable interrupt controller drivers
irqchip/ti-sci-inta: Add msi domain support
soc: ti: Add MSI domain bus support for Interrupt Aggregator
irqchip/ti-sci-inta: Add support for Interrupt Aggregator driver
dt-bindings: irqchip: Introduce TISCI Interrupt Aggregator bindings
irqchip/ti-sci-intr: Add support for Interrupt Router driver
dt-bindings: irqchip: Introduce TISCI Interrupt router bindings
gpio: thunderx: Use the default parent apis for {request,release}_resources
genirq: Introduce irq_chip_{request,release}_resource_parent() apis
firmware: ti_sci: Add helper apis to manage resources
firmware: ti_sci: Add RM mapping table for am654
firmware: ti_sci: Add support for IRQ management
firmware: ti_sci: Add support for RM core ops
...
SoC updates, mostly refactorings and cleanups of old legacy platforms.
Major themes this release:
- Conversion of ixp4xx to a modern platform (drivers, DT, bindings)
- Moving some of the ep93xx headers around to get it closer to multiplatform enabled.
- Cleanups of Davinci
This tag also contains a few patches that were queued up as fixes before
5.1 but I didn't get sent in before release.
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Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC platform updates from Olof Johansson:
"SoC updates, mostly refactorings and cleanups of old legacy platforms.
Major themes this release:
- Conversion of ixp4xx to a modern platform (drivers, DT, bindings)
- Moving some of the ep93xx headers around to get it closer to
multiplatform enabled.
- Cleanups of Davinci
This also contains a few patches that were queued up as fixes before
5.1 but I didn't get sent in before release"
* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (123 commits)
ARM: debug-ll: add default address for digicolor
ARM: u300: regulator: add MODULE_LICENSE()
ARM: ep93xx: move private headers out of mach/*
ARM: ep93xx: move pinctrl interfaces into include/linux/soc
ARM: ep93xx: keypad: stop using mach/platform.h
ARM: ep93xx: move network platform data to separate header
ARM: stm32: add AMBA support for stm32 family
MAINTAINERS: update arch/arm/mach-davinci
ARM: rockchip: add missing of_node_put in rockchip_smp_prepare_pmu
ARM: dts: Add queue manager and NPE to the IXP4xx DTSI
soc: ixp4xx: qmgr: Add DT probe code
soc: ixp4xx: qmgr: Add DT bindings for IXP4xx qmgr
soc: ixp4xx: npe: Add DT probe code
soc: ixp4xx: Add DT bindings for IXP4xx NPE
soc: ixp4xx: qmgr: Pass resources
soc: ixp4xx: Remove unused functions
soc: ixp4xx: Uninline several functions
soc: ixp4xx: npe: Pass addresses as resources
ARM: ixp4xx: Turn the QMGR into a platform device
ARM: ixp4xx: Turn the NPE into a platform device
...
- Document (kerneldoc) core mfd_add_devices() API
- New Drivers
- Add support for Altera SOCFPGA System Manager
- Add support for Maxim MAX77650/77651 PMIC
- Add support for Maxim MAX77663 PMIC
- Add support for ST Multi-Function eXpander (STMFX)
- New Device Support
- Add support for LEDs to Intel Cherry Trail Whiskey Cove PMIC
- Add support for RTC to SAMSUNG Electronics S2MPA01 PMIC
- Add support for SAM9X60 to Atmel HLCDC (High-end LCD Controller)
- Add support for USB X-Powers AXP 8xx PMICs
- Add support for Integrated Sensor Hub (ISH) to ChromeOS EC
- Add support for USB PD Logger to ChromeOS EC
- Add support for AXP223 to X-Powers AXP series PMICs
- Add support for Power Supply to X-Powers AXP 803 PMICs
- Add support for Comet Lake to Intel Low Power Subsystem
- Add support for Fingerprint MCU to ChromeOS EC
- Add support for Touchpad MCU to ChromeOS EC
- Move TI LM3532 support to LED
- New Functionality
- Add/extend DT support; max77650, max77620
- Add support for power-off; max77620
- Add support for clocking; syscon
- Add support for host sleep event; cros_ec
- Fix-ups
- Trivial; Formatting, spelling, etc; Kconfig, sec-core, ab8500-debugfs
- Remove unused functionality; rk808, da9063-*
- SPDX conversion; da9063-*, atmel-*,
- Adapt/add new register definitions; cs47l35-tables, cs47l90-tables, imx6q-iomuxc-gpr
- Fix-up DT bindings; ti-lmu, cirrus,lochnagar
- Simply obtaining driver data; ssbi, t7l66xb, tc6387xb, tc6393xb
- Bug Fixes
- Fix incorrect defined values; max77620, da9063
- Fix device initialisation; twl6040
- Reset device on init; intel-lpss
- Fix build warnings when !OF; sun6i-prcm
- Register OF match tables; tps65912-spi
- Fix DMI matching; intel_quark_i2c_gpio
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Merge tag 'mfd-next-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
Pull MFD updates from Lee Jones:
"Core Framework:
- Document (kerneldoc) core mfd_add_devices() API
New Drivers:
- Altera SOCFPGA System Manager
- Maxim MAX77650/77651 PMIC
- Maxim MAX77663 PMIC
- ST Multi-Function eXpander (STMFX)
New Device Support:
- LEDs support in Intel Cherry Trail Whiskey Cove PMIC
- RTC support in SAMSUNG Electronics S2MPA01 PMIC
- SAM9X60 support in Atmel HLCDC (High-end LCD Controller)
- USB X-Powers AXP 8xx PMICs
- Integrated Sensor Hub (ISH) in ChromeOS EC
- USB PD Logger in ChromeOS EC
- AXP223 in X-Powers AXP series PMICs
- Power Supply in X-Powers AXP 803 PMICs
- Comet Lake in Intel Low Power Subsystem
- Fingerprint MCU in ChromeOS EC
- Touchpad MCU in ChromeOS EC
- Move TI LM3532 support to LED
New Functionality:
- max77650, max77620: Add/extend DT support
- max77620 power-off
- syscon clocking
- croc_ec host sleep event
Fix-ups:
- Trivial; Formatting, spelling, etc; Kconfig, sec-core, ab8500-debugfs
- Remove unused functionality; rk808, da9063-*
- SPDX conversion; da9063-*, atmel-*,
- Adapt/add new register definitions; cs47l35-tables, cs47l90-tables, imx6q-iomuxc-gpr
- Fix-up DT bindings; ti-lmu, cirrus,lochnagar
- Simply obtaining driver data; ssbi, t7l66xb, tc6387xb, tc6393xb
Bug Fixes:
- Fix incorrect defined values; max77620, da9063
- Fix device initialisation; twl6040
- Reset device on init; intel-lpss
- Fix build warnings when !OF; sun6i-prcm
- Register OF match tables; tps65912-spi
- Fix DMI matching; intel_quark_i2c_gpio"
* tag 'mfd-next-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (65 commits)
mfd: Use dev_get_drvdata() directly
mfd: cros_ec: Instantiate properly CrOS Touchpad MCU device
mfd: cros_ec: Instantiate properly CrOS FP MCU device
mfd: cros_ec: Update the EC feature codes
mfd: intel-lpss: Add Intel Comet Lake PCI IDs
mfd: lochnagar: Add links to binding docs for sound and hwmon
mfd: ab8500-debugfs: Fix a typo ("deubgfs")
mfd: imx6sx: Add MQS register definition for iomuxc gpr
dt-bindings: mfd: LMU: Fix lm3632 dt binding example
mfd: intel_quark_i2c_gpio: Adjust IOT2000 matching
mfd: da9063: Fix OTP control register names to match datasheets for DA9063/63L
mfd: tps65912-spi: Add missing of table registration
mfd: axp20x: Add USB power supply mfd cell to AXP803
mfd: sun6i-prcm: Fix build warning for non-OF configurations
mfd: intel-lpss: Set the device in reset state when init
platform/chrome: Add support for v1 of host sleep event
mfd: cros_ec: Add host_sleep_event_v1 command
mfd: cros_ec: Instantiate the CrOS USB PD logger driver
mfd: cs47l90: Make DAC_AEC_CONTROL_2 readable
mfd: cs47l35: Make DAC_AEC_CONTROL_2 readable
...
Core changes:
- The gpiolib MMIO driver has been enhanced to handle two direction
registers, i.e. one register to set lines as input and one register
to set lines as output. It turns out some silicon engineer thinks
the ability to configure a line as input and output at the same
time makes sense, this can be debated but includes a lot of analog
electronics reasoning, and the registers are there and need to
be handled consistently. Unsurprisingly, we enforce the lines to
be either inputs or outputs in such schemes.
- Send in the proper argument value to .set_config() dispatched to
the pin control subsystem. Nobody used it before, now someone
does, so fix it to work as expected.
- The ACPI gpiolib portions can now handle pin bias setting (pull up
or pull down). This has been in the ACPI spec for years and we
finally have it properly integrated with Linux GPIOs. It was based
on an observation from Andy Schevchenko that Thomas Petazzoni's
changes to the core for biasing the PCA950x GPIO expander actually
happen to fit hand-in-glove with what the ACPI core needed.
Such nice synergies happen sometimes.
New drivers:
- A new driver for the Mellanox BlueField GPIO controller. This is
using 64bit MMIO registers and can configure lines as inputs
and outputs at the same time and after improving the MMIO library
we handle it just fine. Interesting.
- A new IXP4xx proper gpiochip driver with hierarchical interrupts
should be coming in from the ARM SoC tree as well.
Driver enhancements:
- The PCA053x driver handles the CAT9554 GPIO expander.
- The PCA053x driver handles the NXP PCAL6416 GPIO expander.
- Wake-up support on PCA053x GPIO lines.
- OMAP now does a nice asynchronous IRQ handling on wake-ups by
letting everything wake up on edges, and this makes runtime PM
work as expected too.
Misc:
- Several cleanups such as devres fixes.
- Get rid of some languager comstructs that cause problems when
compiling with LLVMs clang.
- Documentation review and update.
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Merge tag 'gpio-v5.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull gpio updates from Linus Walleij:
"This is the bulk of the GPIO changes for the v5.2 kernel cycle. A bit
later than usual because I was ironing out my own mistakes. I'm
holding some stuff back for the next kernel as a result, and this
should be a healthy and well tested batch.
Core changes:
- The gpiolib MMIO driver has been enhanced to handle two direction
registers, i.e. one register to set lines as input and one register
to set lines as output. It turns out some silicon engineer thinks
the ability to configure a line as input and output at the same
time makes sense, this can be debated but includes a lot of analog
electronics reasoning, and the registers are there and need to be
handled consistently. Unsurprisingly, we enforce the lines to be
either inputs or outputs in such schemes.
- Send in the proper argument value to .set_config() dispatched to
the pin control subsystem. Nobody used it before, now someone does,
so fix it to work as expected.
- The ACPI gpiolib portions can now handle pin bias setting (pull up
or pull down). This has been in the ACPI spec for years and we
finally have it properly integrated with Linux GPIOs. It was based
on an observation from Andy Schevchenko that Thomas Petazzoni's
changes to the core for biasing the PCA950x GPIO expander actually
happen to fit hand-in-glove with what the ACPI core needed. Such
nice synergies happen sometimes.
New drivers:
- A new driver for the Mellanox BlueField GPIO controller. This is
using 64bit MMIO registers and can configure lines as inputs and
outputs at the same time and after improving the MMIO library we
handle it just fine. Interesting.
- A new IXP4xx proper gpiochip driver with hierarchical interrupts
should be coming in from the ARM SoC tree as well.
Driver enhancements:
- The PCA053x driver handles the CAT9554 GPIO expander.
- The PCA053x driver handles the NXP PCAL6416 GPIO expander.
- Wake-up support on PCA053x GPIO lines.
- OMAP now does a nice asynchronous IRQ handling on wake-ups by
letting everything wake up on edges, and this makes runtime PM work
as expected too.
Misc:
- Several cleanups such as devres fixes.
- Get rid of some languager comstructs that cause problems when
compiling with LLVMs clang.
- Documentation review and update"
* tag 'gpio-v5.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (85 commits)
gpio: Update documentation
docs: gpio: convert docs to ReST and rename to *.rst
gpio: sch: Remove write-only core_base
gpio: pxa: Make two symbols static
gpiolib: acpi: Respect pin bias setting
gpiolib: acpi: Add acpi_gpio_update_gpiod_lookup_flags() helper
gpiolib: acpi: Set pin value, based on bias, more accurately
gpiolib: acpi: Change type of dflags
gpiolib: Introduce GPIO_LOOKUP_FLAGS_DEFAULT
gpiolib: Make use of enum gpio_lookup_flags consistent
gpiolib: Indent entry values of enum gpio_lookup_flags
gpio: pca953x: add support for pca6416
dt-bindings: gpio: pca953x: document the nxp,pca6416
gpio: pca953x: add pcal6416 to the of_device_id table
gpio: gpio-omap: Remove conditional pm_runtime handling for GPIO interrupts
gpio: gpio-omap: configure edge detection for level IRQs for idle wakeup
tracing: stop making gpio tracing configurable
gpio: pca953x: Configure wake-up path when wake-up is enabled
gpio: of: Optimize quirk checks
gpio: mmio: Drop bgpio_dir_inverted
...
Nex drivers:
- New driver for Bitmain BM1880 pin controller
- New driver for Mediatek MT8516
- New driver for Cirrus Logich Lochnagar PMIC pins
Updates:
- Incremental development on Renesas SH-PFC
- Incremental development on Intel pin controller and some
particular updates for Cedarfork.
- Pin configuration support in Allwinner SunXi drivers
- Suspend/resume support in the NXP/Freescale i.MX8MQ driver
- Support for more packaging of the ST Micro STM32
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Merge tag 'pinctrl-v5.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control updates from Linus Walleij:
"It is pretty calm and chill in pin control for the moment. Just
incremental development.
There is an odd patch to the Super-H architecture, it's coming from
the maintainers so should be fine.
Summary:
New drivers:
- Bitmain BM1880 pin controller
- Mediatek MT8516
- Cirrus Logich Lochnagar PMIC pins
Updates:
- Incremental development on Renesas SH-PFC
- Incremental development on Intel pin controller and some particular
updates for Cedarfork.
- Pin configuration support in Allwinner SunXi drivers
- Suspend/resume support in the NXP/Freescale i.MX8MQ driver
- Support for more packaging of the ST Micro STM32"
* tag 'pinctrl-v5.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (72 commits)
pinctrl: mcp23s08: Do not complain about unsupported params
pinctrl: Rework Kconfig dependency for BM1880 pinctrl driver
MAINTAINERS: Add entry for BM1880 pinctrl
pinctrl: Add pinctrl support for BM1880 SoC
dt-bindings: pinctrl: Add BM1880 pinctrl binding
pinctrl: stm32: check irq controller availability at probe
pinctrl: mediatek: Add MT8516 Pinctrl driver
pinctrl: zte: fix leaked of_node references
pinctrl: intel: Increase readability of intel_gpio_update_pad_mode()
pinctrl: intel: Retain HOSTSW_OWN for requested gpio pin
pinctrl: pistachio: fix leaked of_node references
pinctrl: sunxi: Support I/O bias voltage setting on H6
pinctrl: sunxi: Prepare for alternative bias voltage setting methods
pinctrl: st: fix leaked of_node references
pinctrl: samsung: fix leaked of_node references
pinctrl: stm32: align stm32mp157 pin names
pinctrl: stm32: add package information for stm32mp157c
pinctrl: stm32: introduce package support
dt-bindings: pinctrl: stm32: add new entry for package information
pinctrl: imx8mq: Add suspend/resume ops
...
Add GPIO support for max77650 mfd device. This PMIC exposes a single
GPIO line.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Merge tag 'pidfd-v5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
Pull pidfd updates from Christian Brauner:
"This patchset makes it possible to retrieve pidfds at process creation
time by introducing the new flag CLONE_PIDFD to the clone() system
call. Linus originally suggested to implement this as a new flag to
clone() instead of making it a separate system call.
After a thorough review from Oleg CLONE_PIDFD returns pidfds in the
parent_tidptr argument. This means we can give back the associated pid
and the pidfd at the same time. Access to process metadata information
thus becomes rather trivial.
As has been agreed, CLONE_PIDFD creates file descriptors based on
anonymous inodes similar to the new mount api. They are made
unconditional by this patchset as they are now needed by core kernel
code (vfs, pidfd) even more than they already were before (timerfd,
signalfd, io_uring, epoll etc.). The core patchset is rather small.
The bulky looking changelist is caused by David's very simple changes
to Kconfig to make anon inodes unconditional.
A pidfd comes with additional information in fdinfo if the kernel
supports procfs. The fdinfo file contains the pid of the process in
the callers pid namespace in the same format as the procfs status
file, i.e. "Pid:\t%d".
To remove worries about missing metadata access this patchset comes
with a sample/test program that illustrates how a combination of
CLONE_PIDFD and pidfd_send_signal() can be used to gain race-free
access to process metadata through /proc/<pid>.
Further work based on this patchset has been done by Joel. His work
makes pidfds pollable. It finished too late for this merge window. I
would prefer to have it sitting in linux-next for a while and send it
for inclusion during the 5.3 merge window"
* tag 'pidfd-v5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux:
samples: show race-free pidfd metadata access
signal: support CLONE_PIDFD with pidfd_send_signal
clone: add CLONE_PIDFD
Make anon_inodes unconditional
* acpi-utils:
gpio: merrifield: Fix build err without CONFIG_ACPI
ACPI / utils: Remove deprecated function since no user left
ASoC: Intel: cht_bsw_rt5672: Convert to use acpi_dev_get_first_match_dev()
ASoC: Intel: cht_bsw_rt5645: Convert to use acpi_dev_get_first_match_dev()
ASoC: Intel: bytcr_rt5651: Convert to use acpi_dev_get_first_match_dev()
ASoC: Intel: bytcr_rt5640: Convert to use acpi_dev_get_first_match_dev()
ASoC: Intel: bytcht_es8316: Convert to use acpi_dev_get_first_match_dev()
ASoC: Intel: bytcht_da7213: Convert to use acpi_dev_get_first_match_dev()
gpio: merrifield: Convert to use acpi_dev_get_first_match_dev()
extcon: axp288: Convert to use acpi_dev_get_first_match_dev()
ACPI / utils: Introduce acpi_dev_get_first_match_dev() helper
* acpi-video:
ACPI: video: Use vendor backlight on Sony VPCEH3U1E
* acpi-soc:
ACPI / LPSS: Use acpi_lpss_* instead of acpi_subsys_* functions for hibernate
* acpi-button:
ACPI: button: reinitialize button state upon resume
thunderx_gpio_irq_{request,release}_resources apis are trying to
{request,release} resources on parent interrupt. There are default
apis doing the same. Use the default parent apis instead of writing
the same code snippet.
Cc: linux-gpio@vger.kernel.org
Cc: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Support. We migrate to MULTI_IRQ_HANDLER, bumps the IRQs to
offset 16, converts to SPARSE_IRQ, then we add proper subsystem
drivers in each subsystem for irqchip, GPIO and clocksource and
switch over to using these new drivers.
Next we modernize the NPE and QMGR drivers and push them down
into drivers/soc.
This has been tested on the IXP4xx NSLU2 and the Gateworks
GW2358-4.
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Merge tag 'ixp4xx-for-armsoc' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-nomadik into arm/soc
This modernizes the IXP4xx platform and adds initial Device Tree
Support. We migrate to MULTI_IRQ_HANDLER, bumps the IRQs to
offset 16, converts to SPARSE_IRQ, then we add proper subsystem
drivers in each subsystem for irqchip, GPIO and clocksource and
switch over to using these new drivers.
Next we modernize the NPE and QMGR drivers and push them down
into drivers/soc.
This has been tested on the IXP4xx NSLU2 and the Gateworks
GW2358-4.
* tag 'ixp4xx-for-armsoc' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-nomadik: (31 commits)
ARM: dts: Add queue manager and NPE to the IXP4xx DTSI
soc: ixp4xx: qmgr: Add DT probe code
soc: ixp4xx: qmgr: Add DT bindings for IXP4xx qmgr
soc: ixp4xx: npe: Add DT probe code
soc: ixp4xx: Add DT bindings for IXP4xx NPE
soc: ixp4xx: qmgr: Pass resources
soc: ixp4xx: Remove unused functions
soc: ixp4xx: Uninline several functions
soc: ixp4xx: npe: Pass addresses as resources
ARM: ixp4xx: Turn the QMGR into a platform device
ARM: ixp4xx: Turn the NPE into a platform device
ARM: ixp4xx: Move IXP4xx QMGR and NPE headers
ARM: ixp4xx: Move NPE and QMGR to drivers/soc
ARM: dts: Add some initial IXP4xx device trees
ARM: ixp4xx: Add device tree boot support
ARM: ixp4xx: Add DT bindings
gpio: ixp4xx: Add OF probing support
gpio: ixp4xx: Add DT bindings
clocksource/drivers/ixp4xx: Add OF initialization support
clocksource/drivers/ixp4xx: Add DT bindings
...
Signed-off-by: Olof Johansson <olof@lixom.net>
The err_remove_chip block is too coarse, and may perform cleanup that
must not be done. E.g. if of_gpiochip_add() fails, of_gpiochip_remove()
is still called, causing:
OF: ERROR: Bad of_node_put() on /soc/gpio@e6050000
CPU: 1 PID: 20 Comm: kworker/1:1 Not tainted 5.1.0-rc2-koelsch+ #407
Hardware name: Generic R-Car Gen2 (Flattened Device Tree)
Workqueue: events deferred_probe_work_func
[<c020ec74>] (unwind_backtrace) from [<c020ae58>] (show_stack+0x10/0x14)
[<c020ae58>] (show_stack) from [<c07c1224>] (dump_stack+0x7c/0x9c)
[<c07c1224>] (dump_stack) from [<c07c5a80>] (kobject_put+0x94/0xbc)
[<c07c5a80>] (kobject_put) from [<c0470420>] (gpiochip_add_data_with_key+0x8d8/0xa3c)
[<c0470420>] (gpiochip_add_data_with_key) from [<c0473738>] (gpio_rcar_probe+0x1d4/0x314)
[<c0473738>] (gpio_rcar_probe) from [<c052fca8>] (platform_drv_probe+0x48/0x94)
and later, if a GPIO consumer tries to use a GPIO from a failed
controller:
WARNING: CPU: 0 PID: 1 at lib/refcount.c:156 kobject_get+0x38/0x4c
refcount_t: increment on 0; use-after-free.
Modules linked in:
CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.1.0-rc2-koelsch+ #407
Hardware name: Generic R-Car Gen2 (Flattened Device Tree)
[<c020ec74>] (unwind_backtrace) from [<c020ae58>] (show_stack+0x10/0x14)
[<c020ae58>] (show_stack) from [<c07c1224>] (dump_stack+0x7c/0x9c)
[<c07c1224>] (dump_stack) from [<c0221580>] (__warn+0xd0/0xec)
[<c0221580>] (__warn) from [<c02215e0>] (warn_slowpath_fmt+0x44/0x6c)
[<c02215e0>] (warn_slowpath_fmt) from [<c07c58fc>] (kobject_get+0x38/0x4c)
[<c07c58fc>] (kobject_get) from [<c068b3ec>] (of_node_get+0x14/0x1c)
[<c068b3ec>] (of_node_get) from [<c0686f24>] (of_find_node_by_phandle+0xc0/0xf0)
[<c0686f24>] (of_find_node_by_phandle) from [<c0686fbc>] (of_phandle_iterator_next+0x68/0x154)
[<c0686fbc>] (of_phandle_iterator_next) from [<c0687fe4>] (__of_parse_phandle_with_args+0x40/0xd0)
[<c0687fe4>] (__of_parse_phandle_with_args) from [<c0688204>] (of_parse_phandle_with_args_map+0x100/0x3ac)
[<c0688204>] (of_parse_phandle_with_args_map) from [<c0471240>] (of_get_named_gpiod_flags+0x38/0x380)
[<c0471240>] (of_get_named_gpiod_flags) from [<c046f864>] (gpiod_get_from_of_node+0x24/0xd8)
[<c046f864>] (gpiod_get_from_of_node) from [<c0470aa4>] (devm_fwnode_get_index_gpiod_from_child+0xa0/0x144)
[<c0470aa4>] (devm_fwnode_get_index_gpiod_from_child) from [<c05f425c>] (gpio_keys_probe+0x418/0x7bc)
[<c05f425c>] (gpio_keys_probe) from [<c052fca8>] (platform_drv_probe+0x48/0x94)
Fix this by splitting the cleanup block, and adding a missing call to
gpiochip_irqchip_remove().
Fixes: 28355f8196 ("gpio: defer probe if pinctrl cannot be found")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This adds device tree probe and registration support for
the IXP4xx GPIO driver.
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This adds a driver for the IXP4xx GPIO block found in
the Intel XScale IXP4xx systems.
The GPIO part of this block is pretty straight-forward and
just uses the generic MMIO GPIO library.
The irqchip side of this driver is hierarchical where
the main irqchip will receive a processed level trigger
in response to the edge detector of the GPIO block,
so for this reason the v2 version of the irqdomain API
is used (as well as in the parent IXP4xx irqchip) and
masking, unmasking and setting up the type on IRQ
happens on several levels.
Currently this GPIO controller will grab the parent
irqdomain using a special function, but as the platform
move toward device tree probing, this will not be needed:
we can just look up the parent irqdomain from the device
tree.
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Fix sparse warnings:
drivers/gpio/gpio-pxa.c:580:29: warning:
symbol 'pxa_irq_domain_ops' was not declared. Should it be static?
drivers/gpio/gpio-pxa.c:819:20: warning:
symbol 'pxa_gpio_syscore_ops' was not declared. Should it be static?
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
When building CONFIG_ACPI is not set
gcc warn this:
drivers/gpio/gpio-merrifield.c: In function mrfld_gpio_get_pinctrl_dev_name:
drivers/gpio/gpio-merrifield.c:388:19: error: dereferencing pointer to incomplete type struct acpi_device
put_device(&adev->dev);
^~
Reported-by: Hulk Robot <hulkci@huawei.com>
Fixes: d00d2109c3 ("gpio: merrifield: Convert to use acpi_dev_get_first_match_dev()")
Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
For now, we don't take into account the pin bias settings supplied by ACPI.
This change is targeting the mentioned gap.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This helper consolidates all settings of GPIO descriptor lookup flags and
quirks in the future if any.
No functional change intended.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
ACPI GpioIo() resource may have different bias settings.
For now, we distinguish only PullUp() setting in order to configure
the initial state of a pin.
Take into consideration the rest of the possible choices as well,
i.e. PullDown, PullNone and PullDefault, when configuring the initial state
of the pin.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Most of the code inside GPIO library is using enum gpiod_flags.
Some of the function still operate with unsigned int.
In order to be more consistent and better type checking, convert
acpi_gpiochip_parse_own_gpio() to use enum gpiod_flags instead of
unsigned int.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Since GPIO library operates with enumerator when it's subject to handle
the GPIO lookup flags, it will be better to clearly see what default means.
Thus, introduce GPIO_LOOKUP_FLAGS_DEFAULT entry to describe
the default assumptions.
While here, replace 0 by newly introduced constant.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The library uses enum gpio_lookup_flags to define the possible
characteristics of GPIO pin. Since enumerator listed only individual
bits the common use of it is in a form of a bitmask of
gpio_lookup_flags GPIO_* values. The more correct type for this is
unsigned long.
Due to above convert all users to use unsigned long instead of
enum gpio_lookup_flags except enumerator definition.
While here, make field and parameter descriptions consistent as well.
Suggested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Make the anon_inodes facility unconditional so that it can be used by core
VFS code and pidfd code.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
[christian@brauner.io: adapt commit message to mention pidfds]
Signed-off-by: Christian Brauner <christian@brauner.io>
When setting sync EIC as IRQ_TYPE_EDGE_BOTH type, we missed to set the
SPRD_EIC_SYNC_INTMODE register to 0, which means detecting edge signals.
Thus this patch fixes the issue.
Fixes: 25518e024e ("gpio: Add Spreadtrum EIC driver support")
Cc: <stable@vger.kernel.org>
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The NXP PCA6416, documented at [1], is a variant of the PCA GPIO
expander with 16 GPIOs, and supporting an interrupt.
[1] https://www.nxp.com/docs/en/data-sheet/PCA6416A.pdf
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
When adding support for the pcal6416, the of_device_id table was left out,
add the proper entry.
Fixes: aac1e3c968 ("gpio: pca953x: add support for pcal6416 type")
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Commit b764a5863f ("gpio: omap: Remove custom PM calls and use cpu_pm
instead") moved interrupt using GPIO banks to idle with cpu_pm in order
to drop the use of pm_runtime_irq_safe() in a later patch. The GPIO
banks with no interrupts claimed are still being idled based on PM
runtime calls. However this caused a regression for am437x suspend for
rtc+ddr idle mode where the device cannot enter idle state as reported
by Keerthy <j-keerthy@ti.com>.
To fix the issue, we must not fail the pm_runtime callbacks. For GPIO
interrupts, we already have irq_chip_pm_get increment the PM runtime
use count as pointed out by Grygorii Strashko <grygorii.strashko@ti.com>.
So all we need to do is remove the conditional handling in the
runtime_suspend and resume functions and let the CPU PM notifier idle
the GPIO banks.
Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: Grygorii Strashko <grygorii.strashko@ti.com>
Cc: Keerthy <j-keerthy@ti.com>
Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
Cc: Tero Kristo <t-kristo@ti.com>
Fixes: b764a5863f ("gpio: omap: Remove custom PM calls and use cpu_pm instead")
Reported-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
[tony@atomide.com: updated patch description, dropped runtime count changes]
Signed-off-by: Tony Lindgren <tony@atomide.com>
Tested-by: Keerthy <j-keerthy@ti.com>
Reviewed-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The GPIO block can enter idle independently of the CPU power management
calls via smart-idle. When the GPIO block enters idle, level detection
stops working due to clocks being shut off, and an alternative form of
edge detection is used. However, this needs the edge detection
registers set to mark the appropriate edges.
Arrange to configure the edge detection enables along with the level
detection to ensure that any transition to active interrupt state that
occurs while the block is idle is detected as a wake-up event.
Since we enable the edge detection when configuring the IRQ, both
omap2_gpio_enable_level_quirk() nor omap2_gpio_disable_level_quirk()
become redundant, which also means OMAP_GPIO_QUIRK_IDLE_REMOVE_TRIGGER
can be removed. This can be now done without regressions as patch
"gpio: gpio-omap: fix level interrupt idling" allows level interrupts
to idle on omap4 without a workaround.
Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: Grygorii Strashko <grygorii.strashko@ti.com>
Cc: Keerthy <j-keerthy@ti.com>
Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
Cc: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
[tony@atomide.com: update description for the fix dependency]
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
- batch of improvements for the vf610 driver which shrink the code and
make use of resource managed helpers
- support for a new variant of pca953x
- make gpio-mockup buildable on systems without IOMEM
- make gpio-74x164 more flexible by using generic device properties
plus minor improvements
- new driver for Mellanox BlueField
- fixes for wakeup GPIOs in gpio-omap
- use devm_platform_ioremap_resource() in gpio-mxc
- a couple improvements of kernel docs for ACPI code
- don't WARN() in gpiod_put() on optional GPIOs
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Merge tag 'gpio-v5.2-updates-for-linus-part1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into devel
gpio: updates for v5.2 (part 1)
- batch of improvements for the vf610 driver which shrink the code and
make use of resource managed helpers
- support for a new variant of pca953x
- make gpio-mockup buildable on systems without IOMEM
- make gpio-74x164 more flexible by using generic device properties
plus minor improvements
- new driver for Mellanox BlueField
- fixes for wakeup GPIOs in gpio-omap
- use devm_platform_ioremap_resource() in gpio-mxc
- a couple improvements of kernel docs for ACPI code
- don't WARN() in gpiod_put() on optional GPIOs
If a device is part of the wake-up path, it should indicate this by
setting its power.wakeup_path field. This allows the genpd core code to
keep the device enabled during system suspend when needed.
As regulators powering devices are not handled by genpd, the driver
handles these itself, and thus must skip regulator control when the
device is part of the wake-up path.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
EXPORT_SYMBOL_GPL() needs a semicolon at the end, also
explicitly include <linux/export.h> as well.
Fixes: 64ebde5b0f ("gpiolib: export devprop_gpiochip_set_names()")
Acked-by: Jan Kundrát <jan.kundrat@cesnet.cz>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The direction inversion semantics are now handled by simply
using the registers for in/out available, no need to keep
track of inversion semantics exmplicitly anymore.
Reviewed-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: Jan Kotas <jank@cadence.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Remove including <linux/version.h> that don't need it.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
During my regression testing I noticed the cadence GPIO driver
fails on the latest gpio for-next tree.
I think the reason is this patch:
commit 96cd559817f2 ("Merge branch 'devel' into for-next")
Here is a part of the test log:
Loopback 8 -> 24
TESTING: gpio: 488: output direction PASSED
TESTING: gpio: 504: input direction PASSED
TESTING: gpio: 488: 0 PASSED
TESTING: gpio: 488 -> 504: 0 PASSED
TESTING: gpio: 488: 1 FAILED
TESTING: gpio: 488 -> 504: 1 FAILED
TESTING: gpio: 488: 0 PASSED
TESTING: gpio: 488 -> 504: 0 PASSED
It looks like the issue is that gc->bgpio_dir has changed its meaning.
It used to be set to the register value (so it was being inverted).
Now it's always set to 1 for output and 0 for input.
However the bgpio_get_set functions were not updated.
So they invert the bit again, which means a wrong register
is being accessed.
This patch fixes that by removing the unnecessary inversion.
Signed-off-by: Jan Kotas <jank@cadence.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The gpio_set_config function creates a pinconf configuration for a given
pinc_config_param.
However, it always uses an arg of 0, which might not be a valid argument
for a given param. A good example of that would be the bias parameters,
where 0 means that the pull up or down resistor is null, and the pin is
directly connected to VCC/GND.
The framework uses in some other places the value 1 as a default argument
to enable the pull resistor, so let's use the same one here.
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Acked-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
clang warns about a tentative array definition in the gpio-omap driver:
drivers/gpio/gpio-omap.c:1282:34: error: tentative array definition assumed to have one element [-Werror]
static const struct of_device_id omap_gpio_match[];
It's best to just reorder the entire file to avoid forward declarations,
which lets us use the regular declaration. To do this, the unnecessary
CONFIG_OF check must also be removed.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Acked-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Reviewed-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Align the Kconfig formatting with the vast majority of the Kconfig
files, to make it a bit easier / more pleasant to read ;-)
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
gpiochip_free_hogs() was always called from gpiochip_remove(), not
of_gpiochip_remove(). It is now also called from the failure patch in
gpiochip_add_data_with_key().
Fixes: f625d46017 ("gpio: add GPIO hogging mechanism")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
It turns out that one specific hardware has two direction
registers: one to set a GPIO line as input and another one
to set a GPIO line as output. So in theory a line can be
configured as input and output at the same time.
Make the MMIO GPIO helper deal with this: store both
registers in the state container, use both in the generic
code if present. Synchronize the input register to the
output register when we register a GPIO chip, with the
output settings taking precedence.
Keep the helper variable to detect inverted direction
semantics (only direction in register) but augment the
code to be more straight-forward for the generic case
when setting the registers.
Fix some flunky with unreadable direction registers at
the same time as we're touching this code.
Cc: David Woods <dwoods@mellanox.com>
Cc: Shravan Kumar Ramani <sramani@mellanox.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
In case of debug and optional GPIO requested, the gpiod_put() is not aware of
and will WARN, which is not the case.
Make gpiod_put() NULL-aware to keep silent for optional GPIOs.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
acpi_dev_get_first_match_name() is deprecated and going to be removed
because it leaks a reference.
Convert the driver to use acpi_dev_get_first_match_dev() instead.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This patch does the following bunch of changes:
- append () to the functions for reference
- convert gpiochip(s) -> GPIO chip(s)
- add a note about returned error code type [acpi_find_gpio()]
- move long summary to a description [acpi_gpio_count()]
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Use the new helper devm_platform_ioremap_resource() which wraps the
platform_get_resource() and devm_ioremap_resource() together, to
simplify the code.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
- fix for a potential NULL-pointer dereference in the aspeed driver
- revert of the commit using the new gpio_set_config() when setting
debaunce and transitory state config as it caused a regression in
the aspeed driver
- two fixes for gpio-mockup for debugfs problems introduced in the
last merge window
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Merge tag 'gpio-v5.1-rc3-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into fixes
gpio fixes for v5.1-rc3
- fix for a potential NULL-pointer dereference in the aspeed driver
- revert of the commit using the new gpio_set_config() when setting
debaunce and transitory state config as it caused a regression in
the aspeed driver
- two fixes for gpio-mockup for debugfs problems introduced in the
last merge window
Calling read() for a single byte read will return 2 currently. Use
simple_read_from_buffer() which correctly handles all sizes.
Fixes: 2a9e27408e ("gpio: mockup: rework debugfs interface")
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
If the call to of_gpiochip_scan_gpios() in of_gpiochip_add() fails, no
error handling is performed. This lead to the need of callers to call
of_gpiochip_remove() on failure, which causes "BAD of_node_put() on ..."
if the failure happened before the call to of_node_get().
Fix this by adding proper error handling.
Note that calling gpiochip_remove_pin_ranges() multiple times causes no
harm: subsequent calls are a no-op.
Fixes: dfbd379ba9 ("gpio: of: Return error if gpio hog configuration failed")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
"spi-cs-high" is going to be specified in child node of an SPI
controller's representing attached SPI device, so change the code to
look for it there, instead of checking parent node.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Cc: Chris Healy <cphealy@gmail.com>
Cc: linux-gpio@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
SPI GPIO device has more than just "cs-gpio" property in its node and
would request those GPIOs as a part of its initialization. To avoid
applying CS-specific quirk to all of them add a check to make sure
that propname is "cs-gpios".
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Cc: Chris Healy <cphealy@gmail.com>
Cc: linux-gpio@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
We are currently assuming all GPIOs are non-wakeup capable GPIOs as we
not configuring the bank->non_wakeup_gpios like we used to earlier with
platform_data.
Let's add omap_gpio_is_off_wakeup_capable() to make the handling clearer
while considering that later patches may want to configure SoC specific
bank->non_wakeup_gpios for the GPIOs in wakeup domain.
Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: Grygorii Strashko <grygorii.strashko@ti.com>
Cc: Keerthy <j-keerthy@ti.com>
Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
Cc: Russell King <rmk+kernel@armlinux.org.uk>
Cc: Tero Kristo <t-kristo@ti.com>
Reported-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
The bank->workaround_enabled should be for omap24xx erratum 1.101 but is not
needed any longer as erratum 1.101 handling only needs to happen based on
!bank->loses_context with patch "gpio: omap: Limit errata 1.101 handling to
wkup domain gpios only".
Further Grygorii Strashko <grygorii.strashko@ti.com> points out that we are
now tagging all edge GPIOs as non-wakeup GPIOs and rely on original erratum
1.101 handling for scacnning for edge interrupts that have triggered during
idle.
Also the TI Android kernel tree has an earlier commit "GPIO: OMAP: Always
scan gpios during runtime resume" by Tero Kristo <t-kristo@ti.com> saying:
"This allows the driver to generate interrupts for GPIOs that can't
wakeup but have changed state during runtime suspend. We cannot
depend on the decision based on no need to restore, as the system
state might change and pending events could gather up."
So let's remove bank->workaround_enabled and always scan for triggered edge
interrupts on resume. We do that based on bank->enabled_non_wakeup_gpios.
Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: Grygorii Strashko <grygorii.strashko@ti.com>
Cc: Keerthy <j-keerthy@ti.com>
Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
Cc: Russell King <rmk+kernel@armlinux.org.uk>
Cc: Tero Kristo <t-kristo@ti.com>
Reported-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
We need to only apply errata 1.101 handling to clear non-wakeup edge gpios
for idle to the gpio bank(s) in the wkup domain to prevent spurious wake-up
events.
And we must restore what we did after idle manually as the gpio bank in
wkup domain is not restored otherwise.
Let's keep bank->saved_datain register reading separate, that's not related
to the 1.101 errata and is used separately on restore.
Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: Grygorii Strashko <grygorii.strashko@ti.com>
Cc: Keerthy <j-keerthy@ti.com>
Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
Cc: Russell King <rmk+kernel@armlinux.org.uk>
Cc: Tero Kristo <t-kristo@ti.com>
Reported-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
The debugfs read callback must advance ppos or users using read() on
the file descriptor will never get the EOL. This wasn't spotted before
as I was using busybox cat for testing which uses sendfile() internally
and only noticed it now when switched to cat from coreutils.
Fixes: 2a9e27408e ("gpio: mockup: rework debugfs interface")
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
This patch adds support for the GPIO controller used by Mellanox
BlueField SOCs.
Reviewed-by: David Woods <dwoods@mellanox.com>
Signed-off-by: Shravan Kumar Ramani <sramani@mellanox.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reduce size of duplicated comments by switching to use SPDX identifier.
No functional change.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
There is no need to include linux/init.h when at the same time
we include linux/module.h.
Remove redundant inclusion.
While here, sort header block alphabetically for easy maintenance.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
ACPI-enabled platforms can use this device via unified device
properties API. Convert driver to support this.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
In case devm_kzalloc, the patch returns ENOMEM to avoid potential
NULL pointer dereference.
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
This function is needed in mcp23s08. That driver is a special snowflake
because it supports several hardware chips as a single "GPIO chip" under
Linux.
Signed-off-by: Jan Kundrát <jan.kundrat@cesnet.cz>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Phil Reid <preid@electromag.com.au>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The testing driver doesn't really depend on HAS_IOMEM. We may want to
build it for testing purposes on architectures not supporting IOMEM,
for example: on user-mode linux. Move it out of the "Memory Mapped GPIO
drivers" section.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
The testing module doesn't need GPIO irqchip nor does it depend on
sysfs. Remove unnecessary dependencies from Kconfig.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Current code test wrong value so it does not verify if the written
data is correctly read back. Fix it.
Also make it return -EPERM if read value does not match written bit,
just like it done for adnp_gpio_direction_output().
Fixes: 5e969a401a ("gpio: Add Avionic Design N-bit GPIO expander support")
Cc: <stable@vger.kernel.org>
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
ida_simple_get may fail and return a negative error number.
The fix checks its return value; if it fails, go to err_destroy.
Cc: <stable@vger.kernel.org>
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
The ON Semiconductor CAT9554 is a variant of the PCA953x GPIO expander,
with 8 GPIOs and interrupt functionality.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
The code already defines "dev" variable to help with that, so make
sure all of the code uses it.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Heiner Kallweit <hkallweit1@gmail.com>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: linux-gpio@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-imx@nxp.com
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Now that the driver's custom remove hook contains only a single
action, replace it by converting the code to use
devm_gpiochip_add_data() to simplify things.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Heiner Kallweit <hkallweit1@gmail.com>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: linux-gpio@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-imx@nxp.com
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Clk_gpio should be disabled in all error paths in the code that
follws, including the case when either gpiochip_add_data() or
gpiochip_irqchip_add() fail. To simplify things fix this by using
devm_add_action() to disable corresponding clock in case of any erros
as well as driver/device removal.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Heiner Kallweit <hkallweit1@gmail.com>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: linux-gpio@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-imx@nxp.com
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Clk_port should be disabled in all error paths in the code that
follws, including the case when either gpiochip_add_data() or
gpiochip_irqchip_add() fail. To simplify things fix this by using
devm_add_action_or_reset() to disable corresponding clock in case of
any erros as well as driver/device removal.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Heiner Kallweit <hkallweit1@gmail.com>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: linux-gpio@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-imx@nxp.com
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Both branches of the if statement do exactly the same thing, just at
different offsets. Simplify the code a bit by moving shared action
code outside of the if statement. No functional change intended.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Heiner Kallweit <hkallweit1@gmail.com>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: linux-gpio@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-imx@nxp.com
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
The only difference between two codepaths is register offset
used. Simplify the code a bit by replacing explicit calls with a
single call with a variable offset. No functional change intended.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Heiner Kallweit <hkallweit1@gmail.com>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: linux-gpio@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-imx@nxp.com
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
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Merge tag 'pci-v5.1-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
- Use match_string() instead of reimplementing it (Andy Shevchenko)
- Enable SERR# forwarding for all bridges (Bharat Kumar Gogada)
- Use Latency Tolerance Reporting if already enabled by platform (Bjorn
Helgaas)
- Save/restore LTR info for suspend/resume (Bjorn Helgaas)
- Fix DPC use of uninitialized data (Dongdong Liu)
- Probe bridge window attributes only once at enumeration-time to fix
device accesses during rescan (Bjorn Helgaas)
- Return BAR size (not "size -1 ") from pci_size() to simplify code (Du
Changbin)
- Use config header type (not class code) identify bridges more
reliably (Honghui Zhang)
- Work around Intel Denverton incorrect Trace Hub BAR size reporting
(Alexander Shishkin)
- Reorder pciehp cached state/hardware state updates to avoid missed
interrupts (Mika Westerberg)
- Turn ibmphp semaphores into completions or mutexes (Arnd Bergmann)
- Mark expected switch fall-through (Mathieu Malaterre)
- Use of_node_name_eq() for node name comparisons (Rob Herring)
- Add ACS and pciehp quirks for HXT SD4800 (Shunyong Yang)
- Consolidate Rohm Vendor ID definitions (Andy Shevchenko)
- Use u32 (not __u32) for things not exposed to userspace (Logan
Gunthorpe)
- Fix locking semantics of bus and slot reset interfaces (Alex
Williamson)
- Update PCIEPORTBUS Kconfig help text (Hou Zhiqiang)
- Allow portdrv to claim subtractive decode Ports so PCIe services will
work for them (Honghui Zhang)
- Report PCIe links that become degraded at run-time (Alexandru
Gagniuc)
- Blacklist Gigabyte X299 Root Port power management to fix Thunderbolt
hotplug (Mika Westerberg)
- Revert runtime PM suspend/resume callbacks that broke PME on network
cable plug (Mika Westerberg)
- Disable Data Link State Changed interrupts to prevent wakeup
immediately after suspend (Mika Westerberg)
- Extend altera to support Stratix 10 (Ley Foon Tan)
- Allow building altera driver on ARM64 (Ley Foon Tan)
- Replace Douglas with Tom Joseph as Cadence PCI host/endpoint
maintainer (Lorenzo Pieralisi)
- Add DT support for R-Car RZ/G2E (R8A774C0) (Fabrizio Castro)
- Add dra72x/dra74x/dra76x SoC compatible strings (Kishon Vijay Abraham I)
- Enable x2 mode support for dra72x/dra74x/dra76x SoC (Kishon Vijay
Abraham I)
- Configure dra7xx PHY to PCIe mode (Kishon Vijay Abraham I)
- Simplify dwc (remove unnecessary header includes, name variables
consistently, reduce inverted logic, etc) (Gustavo Pimentel)
- Add i.MX8MQ support (Andrey Smirnov)
- Add message to help debug dwc MSI-X mask bit errors (Gustavo
Pimentel)
- Work around imx7d PCIe PLL erratum (Trent Piepho)
- Don't assert qcom reset GPIO during probe (Bjorn Andersson)
- Skip dwc MSI init if MSIs have been disabled (Lucas Stach)
- Use memcpy_fromio()/memcpy_toio() instead of plain memcpy() in PCI
endpoint framework (Wen Yang)
- Add interface to discover supported endpoint features to replace a
bitfield that wasn't flexible enough (Kishon Vijay Abraham I)
- Implement the new supported-feature interface for designware-plat,
dra7xx, rockchip, cadence (Kishon Vijay Abraham I)
- Fix issues with 64-bit BAR in endpoints (Kishon Vijay Abraham I)
- Add layerscape endpoint mode support (Xiaowei Bao)
- Remove duplicate struct hv_vp_set in favor of struct hv_vpset (Maya
Nakamura)
- Rework hv_irq_unmask() to use cpumask_to_vpset() instead of
open-coded reimplementation (Maya Nakamura)
- Align Hyper-V struct retarget_msi_interrupt arguments (Maya Nakamura)
- Fix mediatek MMIO size computation to enable full size of available
MMIO space (Honghui Zhang)
- Fix mediatek DMA window size computation to allow endpoint DMA access
to full DRAM address range (Honghui Zhang)
- Fix mvebu prefetchable BAR regression caused by common bridge
emulation that assumed all bridges had prefetchable windows (Thomas
Petazzoni)
- Make advk_pci_bridge_emul_ops static (Wei Yongjun)
- Configure MPS settings for VMD root ports (Jon Derrick)
* tag 'pci-v5.1-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (92 commits)
PCI: Update PCIEPORTBUS Kconfig help text
PCI: Fix "try" semantics of bus and slot reset
PCI/LINK: Report degraded links via link bandwidth notification
dt-bindings: PCI: altera: Add altr,pcie-root-port-2.0
PCI: altera: Enable driver on ARM64
PCI: altera: Add Stratix 10 PCIe support
PCI/PME: Fix possible use-after-free on remove
PCI: aardvark: Make symbol 'advk_pci_bridge_emul_ops' static
PCI: dwc: skip MSI init if MSIs have been explicitly disabled
PCI: hv: Refactor hv_irq_unmask() to use cpumask_to_vpset()
PCI: hv: Replace hv_vp_set with hv_vpset
PCI: hv: Add __aligned(8) to struct retarget_msi_interrupt
PCI: mediatek: Enlarge PCIe2AHB window size to support 4GB DRAM
PCI: mediatek: Fix memory mapped IO range size computation
PCI: dwc: Remove superfluous shifting in definitions
PCI: dwc: Make use of GENMASK/FIELD_PREP
PCI: dwc: Make use of BIT() in constant definitions
PCI: dwc: Share code for dw_pcie_rd/wr_other_conf()
PCI: dwc: Make use of IS_ALIGNED()
PCI: imx6: Add code to request/control "pcie_aux" clock for i.MX8MQ
...
Core changes:
- The big change this time around is the irqchip handling in
the qualcomm pin controllers, closely coupled with the
gpiochip. This rework, in a classic fall-between-the-chairs
fashion has been sidestepped for too long. The Qualcomm
IRQchips using the SPMI and SSBI transport mechanisms have
been rewritten to use hierarchical irqchip. This creates
the base from which I intend to gradually pull support for
hierarchical irqchips into the gpiolib irqchip helpers to
cut down on duplicate code. We have too many hacks in the
kernel because people have been working around the missing
hierarchical irqchip for years, and once it was there,
noone understood it for a while. We are now slowly adapting
to using it. This is why this pull requests include changes
to MFD, SPMI, IRQchip core and some ARM Device Trees
pertaining to the Qualcomm chip family. Since Qualcomm have
so many chips and such large deployments it is paramount
that this platform gets this right, and now it (hopefully)
does.
- Core support for pull-up and pull-down configuration, also
from the device tree. When a simple GPIO chip support a
"off or on" pull-up or pull-down resistor, we provide a
way to set this up using machine descriptors or device tree.
If more elaborate control of pull up/down (such as
resistance shunt setting) is required, drivers should be
phased over to use pin control. We do not yet provide a
userspace ABI for this pull up-down setting but I suspect
the makers are going to ask for it soon enough. PCA953x
is the first user of this new API.
- The GPIO mockup driver has been revamped after some
discussion improving the IRQ simulator in the process.
The idea is to make it possible to use the mockup for
both testing and virtual prototyping, e.g. when you do
not yet have a GPIO expander to play with but really
want to get something to develop code around before
hardware is available. It's neat. The blackbox testing
usecase is currently making its way into kernelci.
- ACPI GPIO core preserves non direction flags when updating
flags.
- A new device core helper for devm_platform_ioremap_resource()
is funneled through the GPIO tree with Greg's ACK.
New drivers:
- TQ-Systems QTMX86 GPIO controllers (using port-mapped
I/O)
- Gateworks PLD GPIO driver (vaccumed up from OpenWrt)
- AMD G-Series PCH (Platform Controller Hub) GPIO driver.
- Fintek F81804 & F81966 subvariants.
- PCA953x now supports NXP PCAL6416.
Driver improvements:
- IRQ support on the Nintendo Wii (Hollywood) GPIO.
- get_direction() support for the MVEBU driver.
- Set the right output level on SAMA5D2.
- Drop the unused irq trigger setting on the Spreadtrum
driver.
- Wakeup support for PCA953x.
- A slew of cleanups in the various Intel drivers.
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Merge tag 'gpio-v5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO updates from Linus Walleij:
"This is the bulk of GPIO changes for the v5.1 cycle:
Core changes:
- The big change this time around is the irqchip handling in the
qualcomm pin controllers, closely coupled with the gpiochip. This
rework, in a classic fall-between-the-chairs fashion has been
sidestepped for too long.
The Qualcomm IRQchips using the SPMI and SSBI transport mechanisms
have been rewritten to use hierarchical irqchip. This creates the
base from which I intend to gradually pull support for hierarchical
irqchips into the gpiolib irqchip helpers to cut down on duplicate
code.
We have too many hacks in the kernel because people have been
working around the missing hierarchical irqchip for years, and once
it was there, noone understood it for a while. We are now slowly
adapting to using it.
This is why this pull requests include changes to MFD, SPMI,
IRQchip core and some ARM Device Trees pertaining to the Qualcomm
chip family. Since Qualcomm have so many chips and such large
deployments it is paramount that this platform gets this right, and
now it (hopefully) does.
- Core support for pull-up and pull-down configuration, also from the
device tree. When a simple GPIO chip supports an "off or on" pull-up
or pull-down resistor, we provide a way to set this up using
machine descriptors or device tree.
If more elaborate control of pull up/down (such as resistance shunt
setting) is required, drivers should be phased over to use pin
control. We do not yet provide a userspace ABI for this pull
up-down setting but I suspect the makers are going to ask for it
soon enough. PCA953x is the first user of this new API.
- The GPIO mockup driver has been revamped after some discussion
improving the IRQ simulator in the process.
The idea is to make it possible to use the mockup for both testing
and virtual prototyping, e.g. when you do not yet have a GPIO
expander to play with but really want to get something to develop
code around before hardware is available. It's neat. The blackbox
testing usecase is currently making its way into kernelci.
- ACPI GPIO core preserves non direction flags when updating flags.
- A new device core helper for devm_platform_ioremap_resource() is
funneled through the GPIO tree with Greg's ACK.
New drivers:
- TQ-Systems QTMX86 GPIO controllers (using port-mapped I/O)
- Gateworks PLD GPIO driver (vaccumed up from OpenWrt)
- AMD G-Series PCH (Platform Controller Hub) GPIO driver.
- Fintek F81804 & F81966 subvariants.
- PCA953x now supports NXP PCAL6416.
Driver improvements:
- IRQ support on the Nintendo Wii (Hollywood) GPIO.
- get_direction() support for the MVEBU driver.
- Set the right output level on SAMA5D2.
- Drop the unused irq trigger setting on the Spreadtrum driver.
- Wakeup support for PCA953x.
- A slew of cleanups in the various Intel drivers"
* tag 'gpio-v5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (110 commits)
gpio: gpio-omap: fix level interrupt idling
gpio: amd-fch: Set proper output level for direction_output
x86: apuv2: remove unused variable
gpio: pca953x: Use PCA_LATCH_INT
platform/x86: fix PCENGINES_APU2 Kconfig warning
gpio: pca953x: Fix dereference of irq data in shutdown
gpio: amd-fch: Fix type error found by sparse
gpio: amd-fch: Drop const from resource
gpio: mxc: add check to return defer probe if clock tree NOT ready
gpio: ftgpio: Register per-instance irqchip
gpio: ixp4xx: Add DT bindings
x86: pcengines apuv2 gpio/leds/keys platform driver
gpio: AMD G-Series PCH gpio driver
drivers: depend on HAS_IOMEM for devm_platform_ioremap_resource()
gpio: tqmx86: Set proper output level for direction_output
gpio: sprd: Change to use SoC compatible string
gpio: sprd: Use SoC compatible string instead of wildcard string
gpio: of: Handle both enable-gpio{,s}
gpio: of: Restrict enable-gpio quirk to regulator-gpio
gpio: davinci: use devm_platform_ioremap_resource()
...
Tony notes that the GPIO module does not idle when level interrupts are
in use, as the wakeup appears to get stuck.
After extensive investigation, it appears that the wakeup will only be
cleared if the interrupt status register is cleared while the interrupt
is enabled. However, we are currently clearing it with the interrupt
disabled for level-based interrupts.
It is acknowledged that this observed behaviour conflicts with a
statement in the TRM:
CAUTION
After servicing the interrupt, the status bit in the interrupt status
register (GPIOi.GPIO_IRQSTATUS_0 or GPIOi.GPIO_IRQSTATUS_1) must be
reset and the interrupt line released (by setting the corresponding
bit of the interrupt status register to 1) before enabling an
interrupt for the GPIO channel in the interrupt-enable register
(GPIOi.GPIO_IRQSTATUS_SET_0 or GPIOi.GPIO_IRQSTATUS_SET_1) to prevent
the occurrence of unexpected interrupts when enabling an interrupt
for the GPIO channel.
However, this does not appear to be a practical problem.
Further, as reported by Grygorii Strashko <grygorii.strashko@ti.com>,
the TI Android kernel tree has an earlier similar patch as "GPIO: OMAP:
Fix the sequence to clear the IRQ status" saying:
if the status is cleared after disabling the IRQ then sWAKEUP will not
be cleared and gates the module transition
When we unmask the level interrupt after the interrupt has been handled,
enable the interrupt and only then clear the interrupt. If the interrupt
is still pending, the hardware will re-assert the interrupt status.
Should the caution note in the TRM prove to be a problem, we could
use a clear-enable-clear sequence instead.
Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: Keerthy <j-keerthy@ti.com>
Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
[tony@atomide.com: updated comments based on an earlier TI patch]
Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Current amd_fch_gpio_direction_output implementation ignores the value
argument, fix it so direction_output will set proper output level.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Enrico Weigelt <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The commit 0cdf21b34e
("gpio: pca953x: set the PCA_PCAL flag also when matching by DT")
introduces a helper macro which tells that chip supports latched interrupts,
but the macro was never used for ACPI or legacy enumeration.
So, make use of it for legacy and ACPI enumeration.
Cc: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
We had again a busy development cycle with many new drivers as well as
lots of core improvements / cleanups. Let's go for highlights:
ALSA core:
- PCM locking scheme was refactored for reducing a global rwlock
- PCM suspend is handled in the device type PM ops now; lots of
explicit calls were reduced by this action
- Cleanups about PCM buffer preallocation calls
- Kill NULL device object in memory allocations
- Lots of procfs API cleanups
ASoC core:
- Support for only powering up channels that are actively being used
- Cleanups / fixes of topology API
ASoC drivers:
- MediaTek BTCVSD for a Bluetooth radio chip, which is the first such
driver we've had upstream!
- Quite a few improvements to simplify the generic card drivers,
especially the merge of the SCU cards into the main generic drivers
- Lots of fixes for probing on Intel systems to follow more standard
styles
- A big refresh and cleanup of the Samsung drivers
- New drivers: Asahi Kasei Microdevices AK4497, Cirrus Logic CS4341
and CS35L26, Google ChromeOS embedded controllers, Ingenic JZ4725B,
MediaTek BTCVSD, MT8183 and MT6358, NXP MICFIL, Rockchip RK3328,
Spreadtrum DMA controllers, Qualcomm WCD9335, Xilinx S/PDIF and PCM
formatters
ALSA drivers:
- Improvements of Tegra HD-audio controller driver for supporting new
chips
- HD-audio codec quirks for ALC294 S4 resume, ASUS laptop, Chrome
headset button support and Dell workstations
- Improved DSD support on USB-audio
- Quirk for MOTU MicroBook II USB-audio
- Support for Fireface UCX support and Solid State Logic Duende
Classic/Mini
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Merge tag 'sound-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai:
"We had again a busy development cycle with many new drivers as well as
lots of core improvements / cleanups. Let's go for highlights:
ALSA core:
- PCM locking scheme was refactored for reducing a global rwlock
- PCM suspend is handled in the device type PM ops now; lots of
explicit calls were reduced by this action
- Cleanups about PCM buffer preallocation calls
- Kill NULL device object in memory allocations
- Lots of procfs API cleanups
ASoC core:
- Support for only powering up channels that are actively being used
- Cleanups / fixes of topology API
ASoC drivers:
- MediaTek BTCVSD for a Bluetooth radio chip, which is the first such
driver we've had upstream!
- Quite a few improvements to simplify the generic card drivers,
especially the merge of the SCU cards into the main generic drivers
- Lots of fixes for probing on Intel systems to follow more standard
styles
- A big refresh and cleanup of the Samsung drivers
- New drivers: Asahi Kasei Microdevices AK4497, Cirrus Logic CS4341
and CS35L26, Google ChromeOS embedded controllers, Ingenic JZ4725B,
MediaTek BTCVSD, MT8183 and MT6358, NXP MICFIL, Rockchip RK3328,
Spreadtrum DMA controllers, Qualcomm WCD9335, Xilinx S/PDIF and PCM
formatters
ALSA drivers:
- Improvements of Tegra HD-audio controller driver for supporting new
chips
- HD-audio codec quirks for ALC294 S4 resume, ASUS laptop, Chrome
headset button support and Dell workstations
- Improved DSD support on USB-audio
- Quirk for MOTU MicroBook II USB-audio
- Support for Fireface UCX support and Solid State Logic Duende
Classic/Mini"
* tag 'sound-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (461 commits)
ALSA: usb-audio: Add quirk for MOTU MicroBook II
ASoC: stm32: i2s: skip useless write in slave mode
ASoC: stm32: i2s: fix race condition in irq handler
ASoC: stm32: i2s: remove useless callback
ASoC: stm32: i2s: fix dma configuration
ASoC: stm32: i2s: fix stream count management
ASoC: stm32: i2s: fix 16 bit format support
ASoC: stm32: i2s: fix IRQ clearing
ASoC: qcom: Kconfig: fix dependency for sdm845
ASoC: Intel: Boards: Add Maxim98373 support
ASoC: rsnd: gen: fix SSI9 4/5/6/7 busif related register address
ALSA: firewire-motu: fix construction of PCM frame for capture direction
ALSA: bebob: use more identical mod_alias for Saffire Pro 10 I/O against Liquid Saffire 56
ALSA: hda: Extend i915 component bind timeout
ASoC: wm_adsp: Improve logging messages
ASoC: wm_adsp: Add support for multiple compressed buffers
ASoC: wm_adsp: Refactor compress stream initialisation
ASoC: wm_adsp: Reorder some functions for improved clarity
ASoC: wm_adsp: Factor out stripping padding from ADSP data
ASoC: cs35l36: Fix an IS_ERR() vs NULL checking bug
...
- Update the ACPICA code in the kernel to upstream revision 20190215
including ACPI 6.3 support and more:
* New predefined methods: _NBS, _NCH, _NIC, _NIH, and _NIG (Erik
Schmauss).
* Update of the PCC Identifier structure in PDTT (Erik Schmauss).
* Support for new Generic Affinity Structure subtable in SRAT
(Erik Schmauss).
* New PCC operation region support (Erik Schmauss).
* Support for GICC statistical profiling for MADT (Erik Schmauss).
* New Error Disconnect Recover notification support (Erik Schmauss).
* New PPTT Processor Structure Flags fields support (Erik Schmauss).
* ACPI 6.3 HMAT updates (Erik Schmauss).
* GTDT Revision 3 support (Erik Schmauss).
* Legacy module-level code (MLC) support removal (Erik Schmauss).
* Update/clarification of messages for control method failures
(Bob Moore).
* Warning on creation of a zero-length opregion (Bob Moore).
* acpiexec option to dump extra info for memory leaks (Bob Moore).
* More ACPI error to firmware error conversions (Bob Moore).
* Debugger fix (Bob Moore).
* Copyrights update (Bob Moore).
- Clean up sleep states support code in ACPICA (Christoph Hellwig).
- Rework in_nmi() handling in the APEI code and add suppor for the
ARM Software Delegated Exception Interface (SDEI) to it (James
Morse).
- Fix possible out-of-bounds accesses in BERT-related core (Ross
Lagerwall).
- Fix the APEI code parsing HEST that includes a Deferred Machine
Check subtable (Yazen Ghannam).
- Use DEFINE_DEBUGFS_ATTRIBUTE for APEI-related debugfs files
(YueHaibing).
- Switch the APEI ERST code to the new generic UUID API (Andy
Shevchenko).
- Update the MAINTAINERS entry for APEI (Borislav Petkov).
- Fix and clean up the ACPI EC driver (Rafael Wysocki, Zhang Rui).
- Fix DMI checks handling in the ACPI backlight driver and add the
"Lunch Box" chassis-type check to it (Hans de Goede).
- Add support for using ACPI table overrides included in built-in
initrd images (Shunyong Yang).
- Update ACPI device enumeration to treat the PWM2 device as "always
present" on Lenovo Yoga Book (Yauhen Kharuzhy).
- Fix up the enumeration of device objects with the PRP0001 device
ID (Andy Shevchenko).
- Clean up PPTT parsing error messages (John Garry).
- Clean up debugfs files creation handling (Greg Kroah-Hartman,
Rafael Wysocki).
- Clean up the ACPI DPTF Makefile (Masahiro Yamada).
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Merge tag 'acpi-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI updates from Rafael Wysocki:
"These are ACPICA updates including ACPI 6.3 support among other
things, APEI updates including the ARM Software Delegated Exception
Interface (SDEI) support, ACPI EC driver fixes and cleanups and other
assorted improvements.
Specifics:
- Update the ACPICA code in the kernel to upstream revision 20190215
including ACPI 6.3 support and more:
* New predefined methods: _NBS, _NCH, _NIC, _NIH, and _NIG (Erik
Schmauss).
* Update of the PCC Identifier structure in PDTT (Erik Schmauss).
* Support for new Generic Affinity Structure subtable in SRAT
(Erik Schmauss).
* New PCC operation region support (Erik Schmauss).
* Support for GICC statistical profiling for MADT (Erik Schmauss).
* New Error Disconnect Recover notification support (Erik
Schmauss).
* New PPTT Processor Structure Flags fields support (Erik
Schmauss).
* ACPI 6.3 HMAT updates (Erik Schmauss).
* GTDT Revision 3 support (Erik Schmauss).
* Legacy module-level code (MLC) support removal (Erik Schmauss).
* Update/clarification of messages for control method failures
(Bob Moore).
* Warning on creation of a zero-length opregion (Bob Moore).
* acpiexec option to dump extra info for memory leaks (Bob Moore).
* More ACPI error to firmware error conversions (Bob Moore).
* Debugger fix (Bob Moore).
* Copyrights update (Bob Moore)
- Clean up sleep states support code in ACPICA (Christoph Hellwig)
- Rework in_nmi() handling in the APEI code and add suppor for the
ARM Software Delegated Exception Interface (SDEI) to it (James
Morse)
- Fix possible out-of-bounds accesses in BERT-related core (Ross
Lagerwall)
- Fix the APEI code parsing HEST that includes a Deferred Machine
Check subtable (Yazen Ghannam)
- Use DEFINE_DEBUGFS_ATTRIBUTE for APEI-related debugfs files
(YueHaibing)
- Switch the APEI ERST code to the new generic UUID API (Andy
Shevchenko)
- Update the MAINTAINERS entry for APEI (Borislav Petkov)
- Fix and clean up the ACPI EC driver (Rafael Wysocki, Zhang Rui)
- Fix DMI checks handling in the ACPI backlight driver and add the
"Lunch Box" chassis-type check to it (Hans de Goede)
- Add support for using ACPI table overrides included in built-in
initrd images (Shunyong Yang)
- Update ACPI device enumeration to treat the PWM2 device as "always
present" on Lenovo Yoga Book (Yauhen Kharuzhy)
- Fix up the enumeration of device objects with the PRP0001 device ID
(Andy Shevchenko)
- Clean up PPTT parsing error messages (John Garry)
- Clean up debugfs files creation handling (Greg Kroah-Hartman,
Rafael Wysocki)
- Clean up the ACPI DPTF Makefile (Masahiro Yamada)"
* tag 'acpi-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (65 commits)
ACPI / bus: Respect PRP0001 when retrieving device match data
ACPICA: Update version to 20190215
ACPI/ACPICA: Trivial: fix spelling mistakes and fix whitespace formatting
ACPICA: ACPI 6.3: add GTDT Revision 3 support
ACPICA: ACPI 6.3: HMAT updates
ACPICA: ACPI 6.3: PPTT add additional fields in Processor Structure Flags
ACPICA: ACPI 6.3: add Error Disconnect Recover Notification value
ACPICA: ACPI 6.3: MADT: add support for statistical profiling in GICC
ACPICA: ACPI 6.3: add PCC operation region support for AML interpreter
efi: cper: Fix possible out-of-bounds access
ACPI: APEI: Fix possible out-of-bounds access to BERT region
ACPICA: ACPI 6.3: SRAT: add Generic Affinity Structure subtable
ACPICA: ACPI 6.3: Add Trigger order to PCC Identifier structure in PDTT
ACPICA: ACPI 6.3: Adding predefined methods _NBS, _NCH, _NIC, _NIH, and _NIG
ACPICA: Update/clarify messages for control method failures
ACPICA: Debugger: Fix possible fault with the "test objects" command
ACPICA: Interpreter: Emit warning for creation of a zero-length op region
ACPICA: Remove legacy module-level code support
ACPI / x86: Make PWM2 device always present at Lenovo Yoga Book
ACPI / video: Extend chassis-type detection with a "Lunch Box" check
..
* acpica:
ACPICA: Update version to 20190215
ACPI/ACPICA: Trivial: fix spelling mistakes and fix whitespace formatting
ACPICA: ACPI 6.3: add GTDT Revision 3 support
ACPICA: ACPI 6.3: HMAT updates
ACPICA: ACPI 6.3: PPTT add additional fields in Processor Structure Flags
ACPICA: ACPI 6.3: add Error Disconnect Recover Notification value
ACPICA: ACPI 6.3: MADT: add support for statistical profiling in GICC
ACPICA: ACPI 6.3: add PCC operation region support for AML interpreter
ACPICA: ACPI 6.3: SRAT: add Generic Affinity Structure subtable
ACPICA: ACPI 6.3: Add Trigger order to PCC Identifier structure in PDTT
ACPICA: ACPI 6.3: Adding predefined methods _NBS, _NCH, _NIC, _NIH, and _NIG
ACPICA: Update/clarify messages for control method failures
ACPICA: Debugger: Fix possible fault with the "test objects" command
ACPICA: Interpreter: Emit warning for creation of a zero-length op region
ACPICA: Remove legacy module-level code support
ACPICA: Get rid of acpi_sleep_dispatch()
ACPICA: Update version to 20190108
ACPICA: All acpica: Update copyrights to 2019
ACPICA: acpiexec: Add option to dump extra info for memory leaks
ACPICA: Convert more ACPI errors to firmware errors
If a PCA953x gpio was used as an interrupt and then released,
the shutdown function was trying to extract the pca953x_chip
pointer directly from the irq_data, but in reality was getting
the gpio_chip structure.
The net effect was that the subsequent writes to the data
structure corrupted data in the gpio_chip structure, which wasn't
immediately obvious until attempting to use the GPIO again in the
future, at which point the kernel panics.
This fix correctly extracts the pca953x_chip structure via the
gpio_chip structure, as is correctly done in the other irq
functions.
Fixes: 0a70fe00ef ("gpio: pca953x: Clear irq trigger type on irq shutdown")
Cc: stable@vger.kernel.org
Signed-off-by: Mark Walton <mark.walton@serialtek.com>
Reviewed-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The build servers and linux-next are complaining like this:
drivers/gpio/gpio-amd-fch.c: In function 'amd_fch_gpio_probe':
drivers/gpio/gpio-amd-fch.c:164:49: warning: passing argument 2 of
'devm_ioremap_resource' discards 'const' qualifier from pointer
target type [-Wdiscarded-qualifiers]
priv->base = devm_ioremap_resource(&pdev->dev, &amd_fch_gpio_iores);
^~~~~~~~~~~~~~~~~~~
In file included from include/linux/platform_device.h:14, from
drivers/gpio/gpio-amd-fch.c:15:
include/linux/device.h:709:15: note: expected 'struct resource *'
but argument is of type 'const struct resource *'
void __iomem *devm_ioremap_resource(struct device *dev,struct resource *res);
^~~~~~~~~~~~~~~~~~~~~
Let's just remove "const" for now.
It is possible that devm_ioremap_resource() should rather
be constified so we can pass const resources as arguments.
But right now I just want to get rid of this build warning.
Fixes: e09d168f13 ("gpio: AMD G-Series PCH gpio driver")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reported-by: kbuild test robot <lkp@intel.com>
Reported-by: Anders Roxell <anders.roxell@linaro.org>
Cc: Enrico Weigelt <info@metux.net>
Tested-by: Anders Roxell <anders.roxell@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
On i.MX8MQ platform, clock driver uses platform driver
model and it is probed after GPIO driver, so when GPIO
driver fails to get clock, it should check the error type
to decide whether to return defer probe or just ignore
the clock operation.
Fixes: 2808801aab ("gpio: mxc: add clock operation")
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This augments the FTGPIO010 to register one irqchip
per instance instead of using a static definition.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
GPIO platform driver for the AMD G-series PCH (eg. on GX-412TC)
This driver doesn't registers itself automatically, as it needs to
be provided with platform specific configuration, provided by some
board driver setup code.
Didn't implement oftree probing yet, as it's rarely found on x86.
Cc: linux-gpio@vger.kernel.org
Cc: linus.walleij@linaro.org
Cc: bgolaszewski@baylibre.com
Cc: dvhart@infradead.org
Cc: platform-driver-x86@vger.kernel.org
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
For output-only gpios, direction_output should set proper output level.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Fixes: b868db94a6 ("gpio: tqmx86: Add GPIO from for this IO controller")
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Change to use SoC compatible string instead of wildcard string.
The Spreadtrum SC9860 platform device trees and drivers' development
are still in progress, and now we will always recompile and ship
device trees at the same time as we will compile and ship the kernel,
so we do not need care about the backwards compatibility.
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Handle both enable-gpio and enable-gpios properties of the GPIO
regulator in the quirk. The later is the preferred modern name
of the property.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Jan Kotas <jank@cadence.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Mark Brown <broonie@kernel.org>
Cc: Thierry Reding <treding@nvidia.com>
Cc: Wolfram Sang <wsa+renesas@sang-engineering.com>
Cc: linux-renesas-soc@vger.kernel.org
To: linux-gpio@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Commit 0e7d6f9401 ("gpio: of: Apply regulator-gpio quirk only to
enable-gpios") breaks the device tree ABI specified in the device tree
bindings for fixed regulators (compatible "regulator-fixed"). According
to these bindings the polarity of the GPIO is exclusively controlled by
the presence or absence of the enable-active-high property. As such the
polarity quirk implemented in of_gpio_flags_quirks() must be applied to
the GPIO specified for fixed regulators.
However, commit 0e7d6f9401 ("gpio: of: Apply regulator-gpio quirk only
to enable-gpios") restricted the quirk to the enable-gpios property for
fixed regulators as well, whereas according to the commit message itself
it should only apply to "regulator-gpio" compatible device tree nodes.
Fix this by actually implementing what the offending commit intended,
which is to ensure that the quirk is applied to the GPIO specified by
the "enable-gpio" property for the "regulator-gpio" bindings only.
This fixes a regression on Jetson TX1 where the fixed regulator for the
HDMI +5V pin relies on the flags quirk for the proper polarity.
Fixes: 0e7d6f9401 ("gpio: of: Apply regulator-gpio quirk only to enable-gpios")
Signed-off-by: Thierry Reding <treding@nvidia.com>
Tested-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the new helper that wraps the calls to platform_get_resource() and
devm_ioremap_resource() together.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Implement the irq_set_wake() method in the (optional) irq_chip of the
GPIO expander, and propagate wake-up settings to the upstream interrupt
controller. This allows GPIOs connected to a PCA953X GPIO expander to
serve as wake-up sources.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
- gpio-mockup updates improving the user-space testing interface and
adding line state tracking for correct edge interrupts
- interrupt simulator patch exposing the irq type configuration to
users
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Merge tag 'gpio-v5.1-updates-for-linus-part-2' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into devel
gpio: updates for v5.1 - part 2
- gpio-mockup updates improving the user-space testing interface and
adding line state tracking for correct edge interrupts
- interrupt simulator patch exposing the irq type configuration to
users
This patch hunk is a lightly modified version of a diff found
in a Tegra code dump from a product tree. It makes a lot of
sense because this is what most drivers do.
Cc: Thierry Reding <treding@nvidia.com>
Cc: Stefan Agner <stefan@agner.ch>
Cc: Dmitry Osipenko <digetx@gmail.com>
Cc: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Modify the way the debugfs interface works in gpio-mockup. Introduce
the concept of dummy pull config which will keep the mockup lines in
known state. The pull values can be modified by writing to the debugfs
files corresponding to lines. Lines in input mode always report the
current pull value, lines in output mode change the line value but
it will revert back to the one specified by current pull when released.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
The unlocked variants only get called from places where we already have
the pointer to the underlying gpio_mockup_chip structure, so take it
as parameter instead of struct gpio_chip.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
While no user reported any race condition problems with gpio-mockup,
let's be on the safe side and use a mutex when performing any changes
on the dummy chip structures.
Suggested-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Since commit d6cd33ad71 ("regulator: gpio: Convert to use descriptors")
the GPIO regulator had inverted the polarity of the control GPIO. This
problem manifested itself on systems with DT containing the following
description (snippet from salvator-common.dtsi):
gpios = <&gpio5 1 GPIO_ACTIVE_HIGH>;
gpios-states = <1>;
states = <3300000 1
1800000 0>;
Prior to the aforementioned commit, the gpio-regulator code used
gpio_request_array() to claim the GPIO(s) specified in the "gpios"
DT node, while the commit changed that to devm_gpiod_get_index().
The legacy gpio_request_array() calls gpio_request_one() and then
gpiod_request(), which parses the DT flags of the "gpios" node and
populates the GPIO descriptor flags field accordingly.
The new devm_gpiod_get_index() calls gpiod_get_index(), then
of_find_gpio(), of_get_named_gpiod_flags() with flags != NULL,
and then of_gpio_flags_quirks(). Since commit a603a2b8d8
("gpio: of: Add special quirk to parse regulator flags"),
of_gpio_flags_quirks() contains a quirk for regulator-gpio
which was never triggered by the legacy gpio_request_array()
code path, but is triggered by devm_gpiod_get_index() code
path.
This quirk checks whether a GPIO is associated with a fixed
or gpio-regulator and if so, checks two additional conditions.
First, whether such GPIO is active-low, and if so, ignores the
active-low flag. Second, whether the regulator DT node does
have an "enable-active-high" property and if the property is
NOT present, sets the GPIO flags as active-low.
The second check triggers a problem, since it is applied to all
GPIOs associated with a gpio-regulator, rather than only on the
"enable" GPIOs, as the old code did. This changes the way the
gpio-regulator interprets the DT description of the control
GPIOs.
The old code using gpio_request_array() explicitly parsed the
"enable-active-high" DT property and only applied it to the
GPIOs described in the "enable-gpios" DT node, and only if
those were present.
This patch fixes the quirk code by only applying the quirk
to "enable-gpios", thus restoring the old behavior.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Jan Kotas <jank@cadence.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Mark Brown <broonie@kernel.org>
Cc: Wolfram Sang <wsa+renesas@sang-engineering.com>
Cc: linux-renesas-soc@vger.kernel.org
To: linux-gpio@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Small clean up for Intel PMIC GPIO drivers, includes:
- optimizing IRQ handlers by usage of for_each_set_bit()
- sorting headers alphabetically for better maintenance
- conversion to SPDX identifier
The following is an automated git shortlog grouped by driver:
crystalcove:
- Convert to use SPDX identifier
- Sort headers alphabetically
- Use for_each_set_bit() in IRQ handler
msic:
- Convert to use SPDX identifier
- Sort headers alphabetically
- Remove duplicate check in IRQ handler
wcove:
- Convert to use SPDX identifier
- Fix indentation
- Sort headers alphabetically
- Allow return negative error code from to_reg()
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Merge tag 'intel-gpio-v5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-gpio-intel into devel
intel-gpio for v5.1-1
Small clean up for Intel PMIC GPIO drivers, includes:
- optimizing IRQ handlers by usage of for_each_set_bit()
- sorting headers alphabetically for better maintenance
- conversion to SPDX identifier
The following is an automated git shortlog grouped by driver:
crystalcove:
- Convert to use SPDX identifier
- Sort headers alphabetically
- Use for_each_set_bit() in IRQ handler
msic:
- Convert to use SPDX identifier
- Sort headers alphabetically
- Remove duplicate check in IRQ handler
wcove:
- Convert to use SPDX identifier
- Fix indentation
- Sort headers alphabetically
- Allow return negative error code from to_reg()
- support for a new variant of pca953x
- documentation fix from Wolfram
- some tegra186 name changes
- two minor fixes for madera and altera-a10sr
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Merge tag 'gpio-v5.1-updates-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into devel
gpio updates for v5.1
- support for a new variant of pca953x
- documentation fix from Wolfram
- some tegra186 name changes
- two minor fixes for madera and altera-a10sr
Change the coding style to make it does error checking first.
This also fixes checkpatch warning about line over 80 characters.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Tested by: Thor Thayer <thor.thayer@linux.intel.com>
Reviewed by: Thor Thayer <thor.thayer@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
The new prefix allows the GPIOs to be uniquely identified on a per-chip
basis, which makes it easier to distinguish Tegra186 specific GPIOs from
those of later chips such as Tegra194 which supports a very different
set of GPIOs.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
madera_gpio_chip is only used as a template so it can be marked as const.
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
The NXP PCAL6416, documented at [1], is a variant of the PCA GPIO
expander with 16 GPIOs, and supporting an interrupt and the "extended"
features for interrupt, pull-up/pull-down configuration, etc.
[1] https://www.nxp.com/docs/en/data-sheet/PCAL6416A.pdf
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Similarly to PXA3xx, pinctrl-single can't set pin direction on MMP2 either.
See also: commit 9dabfdd84b ("gpio: pxa: disable pinctrl calls for
PXA3xx")
Cc: stable@vger.kernel.org
Fixes: a770d94637 ("gpio: pxa: add pin control gpio direction and request")
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Unlike gpio_rcar_irq_set_wake(), which this solution was based on,
pcf857x_irq_set_wake() does not need to do anything else than calling
irq_set_irq_wake() for the upstream interrupt controller. Hence there
is no reason for making this call conditional, and no longer a need for
keeping a copy of the interrupt number that also serves as a flag.
Just propagate irq_set_irq_wake() to the upstream interrupt controller,
using the original interrupt number.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Fix the following warning by adding a missing break:
drivers/gpio/gpio-eic-sprd.c: In function ‘sprd_eic_irq_set_type’:
drivers/gpio/gpio-eic-sprd.c:403:3: warning: this statement may fall through [-Wimplicit-fallthrough=]
switch (flow_type) {
^~~~~~
drivers/gpio/gpio-eic-sprd.c:435:2: note: here
default:
^~~~~~~
This patch is part of the ongoing efforts to enable
-Wimplicit-fallthrough.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The Zynq GPIO driver currently implements runtime PM by:
- Enabling runtime PM support in ->probe() and letting the runtime PM
reference counter drop to zero at the end of ->probe().
- Increasing the runtime PM reference counter in ->request() and
decreasing it in ->free().
However, the latter is not sufficient: when a GPIO is used as an
interrupt, ->request() and ->free() are not called. Due to this, the
runtime PM counter remains to zero when the only GPIOs in use are used
as interrupts, causing them to simply not work.
To address this problem, this commit implement the
->irq_request_resources() and ->irq_release_resources() hooks,
ensuring that the runtime PM counter is properly
incremented/decremented. Since we override the default hooks, we keep
the existing behavior by making sure they call gpiochip_reqres_irq() /
gpiochip_relres_irq() respectively.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Reviewed-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit adds a minimal implementation of the ->set_config() hook,
with support for the PIN_CONFIG_BIAS_PULL_UP and
PIN_CONFIG_BIAS_PULL_DOWN configurations.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit adds support for configuring the pull-up and pull-down
resistors available in some GPIO controllers. While configuring
pull-up/pull-down is already possible through the pinctrl subsystem,
some GPIO controllers, especially simple ones such as GPIO expanders
on I2C, don't have any pinmuxing capability and therefore do not use
the pinctrl subsystem.
This commit implements the GPIO_PULL_UP and GPIO_PULL_DOWN flags,
which can be used from the Device Tree, to enable a pull-up or
pull-down resistor on a given GPIO.
The flag is simply propagated all the way to the core GPIO subsystem,
where it is used to call the gpio_chip ->set_config callback with the
appropriate existing PIN_CONFIG_BIAS_* values.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
As suggested by Linus Walleij, let's use the new gpio_set_config()
helper in gpiod_set_debounce() and gpiod_set_transitory().
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit simply renames gpio_set_drive_single_ended() to
gpio_set_config(), as the function is not specific to setting the GPIO
drive type, and will be used for other purposes in followup commits.
In addition, it moves the function above gpiod_direction_input(), as
it will be used from gpiod_direction_input().
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Interupts were generated using GPIN interrupts of
ADP5588. These interrupts have two important limitations:
1. Interrupts can only be generated for either rising or
falling edges but not both.
2. Interrupts are reasserted as long as the interrupt condition
persists (i.e. high or low level on that GPIN). This generates
lots of interrupts unless the event is very short.
To overcome this, ADP5588 provides an event system which queues
up to 10 events in a buffer. GPIN events are queued whenever the
GPIN is asserted or deasserted. This makes it possible to support
generating GPIN interrupts for both edges and to generate only one
interrupt per state change.
Thus it is possible to chain the gpio-keys driver for some GPIOs.
Signed-off-by: Nikolaus Voss <nikolaus.voss@loewensteinmedical.de>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Make platform data optional and add DT id table.
Switch to dynamically mapped GPIOs and IRQs if not provided
via platform data.
Signed-off-by: Nikolaus Voss <nikolaus.voss@loewensteinmedical.de>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
It's not necessary to remove gpio_chip which added with
devm_gpiochip_add_data().
Fixes: b868db94a6 ("gpio: tqmx86: Add GPIO from for this IO controller")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This adds a driver for Gateworks PLD GPIO, that exist in
two instances on the Gateworks Cambria GW2358-4 router
platform at least.
Cc: Imre Kaloz <kaloz@openwrt.org>
Cc: Tim Harvey <tharvey@gateworks.com>
Reviewed-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
New quirk enforces search for GPIO based on its type,
i.e. iterate over GpioIo resources only.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Reduce size of duplicated comments by switching to use SPDX identifier.
No functional change.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reduce size of duplicated comments by switching to use SPDX identifier.
No functional change.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reduce size of duplicated comments by switching to use SPDX identifier.
No functional change.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
There is no need to check for non-zero pending since for_each_set_bit() does it
on the first iteration.
While here, drop redundant assignment.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
The type of to_reg() is unsigned int while it might return
a negative error code. Callers are also expecting a signed type.
For sake of type consistency replace unsigned int with plain int.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
This simplifies and standardizes the AB IRQ handler by using
the for_each_set_bit() library function.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
This fixes the kernel complains:
gpio gpiochip1: (1e000600.gpio-bank1): detected irqchip that is shared
with multiple gpiochips: please fix the driver.
gpio gpiochip2: (1e000600.gpio-bank2): detected irqchip that is shared
with multiple gpiochips: please fix the driver.
Fixes: 4ba9c3afda ("gpio: mt7621: Add a driver for MT7621")
Cc: stable@vger.kernel.org
Signed-off-by: René van Dorst <opensource@vdorst.com>
Cc: linux-gpio@vger.kernel.org
Cc: linux-mediatek@lists.infradead.org
Tested-by: Greg Ungerer <gerg@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Move the Rohm Vendor ID to pci_ids.h instead of defining it in several
drivers.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
On SoC reset all GPIO interrupts are disable. However, if kexec is
used to boot into a new kernel, the SoC does not experience a
reset. Hence GPIO interrupts can be left enabled from the previous
kernel. It is then possible for the interrupt to fire before an
interrupt handler is registered, resulting in the kernel complaining
of an "unexpected IRQ trap", the interrupt is never cleared, and so
fires again, resulting in an interrupt storm.
Disable all GPIO interrupts before registering the GPIO IRQ chip.
Fixes: 7f2691a196 ("gpio: vf610: add gpiolib/IRQ chip driver for Vybrid")
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The checker complains during build
gpiolib-acpi.c:45: warning: Function parameter or member 'irq_requested' not described in 'acpi_gpio_event'
because the typo in the field description.
Fix the name to have documentation up-to-date.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Some TQ-Systems ComExpress modules contain an IO controller with 8
GPIO lines.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Add missing '*' char to the start of the comment lines.
Signed-off-by: Phil Reid <preid@electromag.com.au>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The SPI chip selects were not properly inspected due to
a logic inversion. This made SPI GPIOs not work.
Cc: Jan Kotas <jank@cadence.com>
Reported-by: Jan Kotas <jank@cadence.com>
Tested-by: Jan Kotas <jank@cadence.com>
Fixes: f3186dd876 ("spi: Optionally use GPIO descriptors for CS GPIOs")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
This adds the two new functions gpiochip_irq_domain_activate and
gpiochip_irq_domain_deactivate that can be used as the activate and
deactivate functions in the struct irq_domain_ops. This is for
situations where only gpiochip_{lock,unlock}_as_irq needs to be called.
SPMI and SSBI GPIO are two users that will initially use these
functions.
Signed-off-by: Brian Masney <masneyb@onstation.org>
Suggested-by: Stephen Boyd <sboyd@kernel.org>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The altr_a10sr_gpio_direction_output should set proper output level
based on the value argument.
Fixes: 26a48c4cc2 ("gpio: altera-a10sr: Add A10 System Resource Chip GPIO support.")
Cc: <stable@vger.kernel.org>
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Tested by: Thor Thayer <thor.thayer@linux.intel.com>
Reviewed by: Thor Thayer <thor.thayer@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
When setting async EIC as IRQ_TYPE_EDGE_BOTH type, we missed to set the
SPRD_EIC_ASYNC_INTMODE register to 0, which means detecting edge signals.
Thus this patch fixes the issue.
Fixes: 25518e024e ("gpio: Add Spreadtrum EIC driver support")
Cc: <stable@vger.kernel.org>
Signed-off-by: Neo Hou <neo.hou@unisoc.com>
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Since differnt type EICs have its own data register to read, thus fix the
incorrect data register.
Fixes: 25518e024e ("gpio: Add Spreadtrum EIC driver support")
Cc: <stable@vger.kernel.org>
Signed-off-by: Neo Hou <neo.hou@unisoc.com>
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Nested interrupts run inside the calling thread's context and the top
half handler is never called which means that we never read the
timestamp.
This issue came up when trying to read line events from a gpiochip
using regmap_irq_chip for interrupts.
Fix it by reading the timestamp from the irq thread function if it's
still 0 by the time the second handler is called.
Fixes: d58f2bf261 ("gpio: Timestamp events in hardirq handler")
Cc: stable@vger.kernel.org
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
When multiple instances of pcf857x chips are present, a fix up
message [1] is printed during the probe of the 2nd and later
instances.
The issue is that the driver is using the same irq_chip data
structure between multiple instances.
Fix this by allocating the irq_chip data structure per instance.
[1] fix up message addressed by this patch
[ 1.212100] gpio gpiochip9: (pcf8575): detected irqchip that is shared with multiple gpiochips: please fix the driver.
Cc: Stable <stable@vger.kernel.org>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Basic implementation of driver is used to support Fintek
F81804 & F81966 gpios with custom register set.
Signed-off-by: Steffen Kothe <steffen.kothe.gc1993@googlemail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
R-Car GPIO controller provides two interfaces to set GPIO line output
signal state, and for a particular GPIO line the selected interface is
determined by OUTDTSEL bit value.
At the moment the driver supports only one of two interfaces, namely
OUTDT General Output Register is used to control the output signal.
While this selection is the default one on reset, it is not explicitly
configured on probe, thus it might be possible that kernel and userspace
consumers of a GPIO won't be able to set the wanted GPIO output signal.
Below is a simple test case to reproduce the described problem and
verify this fix in the kernel on H3 ULCB by setting non-default OUTDTSEL
configuration from a bootloader:
u-boot > mw.l 0xe6055440 0x3000 1
...
userspace > echo default-on > /sys/devices/platform/leds/leds/led5/trigger
userspace > echo default-on > /sys/devices/platform/leds/leds/led6/trigger
Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Like the Spreadtrum EIC driver[1], this driver needs to emulate edge
triggered interrupts to support the generic gpio-keys driver.
[1]: https://www.spinics.net/lists/kernel/msg2764576.html
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This patch implements level-triggered IRQs in the Hollywood GPIO driver.
Edge triggered interrupts are not supported in this GPIO controller, so
I moved their emulation into a separate patch.
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
When a system has two PCA953x GPIO expanders, the kernel complains with:
gpio gpiochip2: (0-0021): detected irqchip that is shared with multiple gpiochips: please fix the driver.
Indeed, there is a single instance of "struct irq_chip" that gets
re-used for both PCA953x instance. This commit moves the "struct
irq_chip" to be part of the "struct pca953x_chip", so that we have one
"struct irq_chip" per PCA953X instance.
As part of this, the name of the irq_chip is also made different on a
per-instance basis, now using the dev_name() of the I2C device. This
changes what is visible in /proc/interrupts.
Before:
47: 0 0 pca953x 10 Edge e0100000.sdhci cd
48: 0 0 pca953x 6 Edge e0101000.sdhci cd
After:
47: 0 0 0-0020 10 Edge e0100000.sdhci cd
48: 2 0 0-0020 6 Edge e0101000.sdhci cd
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The current design of pca953x_irq_setup() is:
if (all conditions to support IRQ are met) {
lots of code to support IRQs, which goes to a serious indentation
level.
}
return 0;
It makes more sense to handle this like this:
if (!all conditions to support IRQ are met)
return 0;
handle IRQ support
This commit does just this change, reducing by one tab the indentation
level of the IRQ setup code. Thanks to this reduced indentation level,
we are less restricted by the 80-column limit, and we can have more
function arguments on the same line.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The Spreadtrum PMIC interrupt controller has no registers to set irq
trigger type, since it is always high level trigger. That means the
PMIC EIC controller as a child device of PMIC INTC does not need to
set the trigger type, so remove it.
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Set proper output level base on the argument of direction_output.
Also remove sama5d2_piobu_set_direction() as there is only one caller
now.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Fixes the following sparse warning:
drivers/gpio/gpio-pca953x.c:292:28: warning:
symbol 'pca953x_i2c_regmap' was not declared. Should it be static?
Fixes: 4942723276 ("gpio: pca953x: Perform basic regmap conversion")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
__acpi_gpio_update_gpiod_flags purpose is to make the gpiod_flags used
when requesting a GPIO match the restrictions from the ACPI resource,
as stored in acpi_gpio_info.flags.
But acpi_gpio_info.flags only contains direction info, and the
requester may have passed in special non-direction flags like
GPIOD_FLAGS_BIT_NONEXCLUSIVE, which we currently clobber.
This commit modifies __acpi_gpio_update_gpiod_flags to preserve these
special flags, so that a requested of an ACPI GPIO can e.g. pass
GPIOD_FLAGS_BIT_NONEXCLUSIV and have it work as intended.
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
struct gpio_chip documentation recommends to always implement this
callback function.
A more concrete motivation is to be able (in combination with
GPIOD_ASIS) to detect whether the bootloader has changed the state of a
GPIO signal.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
acpi_gpiochip_alloc_event only continues allocating an event and adding
it to the list if gpiochip_request_own_desc does not return an error.
So events with an error desc are never placed on the events list and this
check is really not necessary.
Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Core changes:
- Some core changes are already in outside of this pull
request as they came through the regulator tree, most
notably devm_gpiod_unhinge() that removes devres refcount
management from a GPIO descriptor. This is needed in
subsystems such as regulators where the regulator core
need to take over the reference counting and lifecycle
management for a GPIO descriptor.
- We dropped devm_gpiochip_remove() and devm_gpio_chip_match()
as nothing needs it. We can bring it back if need be.
- Add a global TODO so people see where we are going. This
helps setting the direction now that we are two GPIO
maintainers.
- Handle the MMC CD/WP properties in the device tree core.
(The bulk of patches activating this code is already
merged through the MMC/SD tree.)
- Augment gpiochip_request_own_desc() to pass a flag so
we as gpiochips can request lines as active low or open
drain etc even from ourselves.
New drivers:
- New driver for Cadence GPIO blocks.
- New driver for Atmel SAMA5D2 PIOBU GPIO lines.
Driver improvements:
- A major refactoring of the PCA953x driver - this driver has
been around for ages, and is now modernized to reduce code
duplication that has stacked up and is using regmap to read
write and cache registers.
- Intel drivers are now maintained in a separate tree and
start with a round of cleanups and unifications.
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Merge tag 'gpio-v4.21-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO updates from Linus Walleij:
"This is the bulk of GPIO changes for the v4.21 kernel series.
Core changes:
- Some core changes are already in outside of this pull request as
they came through the regulator tree, most notably
devm_gpiod_unhinge() that removes devres refcount management from a
GPIO descriptor. This is needed in subsystems such as regulators
where the regulator core need to take over the reference counting
and lifecycle management for a GPIO descriptor.
- We dropped devm_gpiochip_remove() and devm_gpio_chip_match() as
nothing needs it. We can bring it back if need be.
- Add a global TODO so people see where we are going. This helps
setting the direction now that we are two GPIO maintainers.
- Handle the MMC CD/WP properties in the device tree core. (The bulk
of patches activating this code is already merged through the
MMC/SD tree.)
- Augment gpiochip_request_own_desc() to pass a flag so we as
gpiochips can request lines as active low or open drain etc even
from ourselves.
New drivers:
- New driver for Cadence GPIO blocks.
- New driver for Atmel SAMA5D2 PIOBU GPIO lines.
Driver improvements:
- A major refactoring of the PCA953x driver - this driver has been
around for ages, and is now modernized to reduce code duplication
that has stacked up and is using regmap to read write and cache
registers.
- Intel drivers are now maintained in a separate tree and start with
a round of cleanups and unifications"
* tag 'gpio-v4.21-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (99 commits)
gpio: sama5d2-piobu: Depend on OF_GPIO
gpio: Add Cadence GPIO driver
dt-bindings: gpio: Add bindings for Cadence GPIO
gpiolib-acpi: remove unused variable 'err', cleans up build warning
gpio: mxs: read pin level directly instead of using .get
gpio: aspeed: remove duplicated statement
gpio: add driver for SAMA5D2 PIOBU pins
dt-bindings: arm: atmel: describe SECUMOD usage as a GPIO controller
gpio/mmc/of: Respect polarity in the device tree
dt-bindings: gpio: rcar: Add r8a774c0 (RZ/G2E) support
memory: omap-gpmc: Get the header of the enum
ARM: omap1: Fix new user of gpiochip_request_own_desc()
gpio: pca953x: Add regmap dependency for PCA953x driver
gpio: raspberrypi-exp: decrease refcount on firmware dt node
gpiolib: Fix return value of gpio_to_desc() stub if !GPIOLIB
gpio: pca953x: Restore registers after suspend/resume cycle
gpio: pca953x: Zap single use of pca953x_read_single()
gpio: pca953x: Zap ad-hoc reg_output cache
gpio: pca953x: Zap ad-hoc reg_direction cache
gpio: pca953x: Perform basic regmap conversion
...
- Cleanup BKOPS support
- Introduce MMC_CAP_SYNC_RUNTIME_PM
- slot-gpio: Delete legacy slot GPIO handling
MMC host:
- alcor: Add new mmc host driver for Alcor Micro PCI based cardreader
- bcm2835: Several improvements to better recover from errors
- jz4740: Rework and fixup pre|post_req support
- mediatek: Add support for SDIO IRQs
- meson-gx: Improve clock phase management
- meson-gx: Stop descriptor on errors
- mmci: Complete the sbc error path by sending a stop command
- renesas_sdhi/tmio: Fixup reset/resume operations
- renesas_sdhi: Add support for r8a774c0 and R7S9210
- renesas_sdhi: Whitelist R8A77990 SDHI
- renesas_sdhi: Fixup eMMC HS400 compatibility issues for H3 and M3-W
- rtsx_usb_sdmmc: Re-work card detection/removal support
- rtsx_usb_sdmmc: Re-work runtime PM support
- sdhci: Fix timeout loops for some variant drivers
- sdhci: Improve support for error handling due to failing commands
- sdhci-acpi/pci: Disable LED control for Intel BYT-based controllers
- sdhci_am654: Add new SDHCI variant driver to support TI's AM654 SOCs
- sdhci-of-esdhc: Add support for eMMC HS400 mode
- sdhci-omap: Fixup reset support
- sdhci-omap: Workaround errata regarding SDR104/HS200 tuning failures
- sdhci-msm: Fixup sporadic write transfers issues for SDR104/HS200
- sdhci-msm: Fixup dynamical clock gating issues
- various: Complete converting all hosts into using slot GPIO descriptors
Other:
- Move GPIO mmc platform data for mips/sh/arm to GPIO descriptors
- Add new Alcor Micro cardreader PCI driver
- Support runtime power management for memstick rtsx_usb_ms driver
- Use USB remote wakeups for card detection for rtsx_usb misc driver
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Merge tag 'mmc-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC updates from Ulf Hansson:
"This time, this pull request contains changes crossing subsystems and
archs/platforms, which is mainly because of a bigger modernization of
moving from legacy GPIO to GPIO descriptors for MMC (by Linus
Walleij).
Additionally, once again, I am funneling changes to
drivers/misc/cardreader/* and drivers/memstick/* through my MMC tree,
mostly due to that we lack a maintainer for these.
Summary:
MMC core:
- Cleanup BKOPS support
- Introduce MMC_CAP_SYNC_RUNTIME_PM
- slot-gpio: Delete legacy slot GPIO handling
MMC host:
- alcor: Add new mmc host driver for Alcor Micro PCI based cardreader
- bcm2835: Several improvements to better recover from errors
- jz4740: Rework and fixup pre|post_req support
- mediatek: Add support for SDIO IRQs
- meson-gx: Improve clock phase management
- meson-gx: Stop descriptor on errors
- mmci: Complete the sbc error path by sending a stop command
- renesas_sdhi/tmio: Fixup reset/resume operations
- renesas_sdhi: Add support for r8a774c0 and R7S9210
- renesas_sdhi: Whitelist R8A77990 SDHI
- renesas_sdhi: Fixup eMMC HS400 compatibility issues for H3 and M3-W
- rtsx_usb_sdmmc: Re-work card detection/removal support
- rtsx_usb_sdmmc: Re-work runtime PM support
- sdhci: Fix timeout loops for some variant drivers
- sdhci: Improve support for error handling due to failing commands
- sdhci-acpi/pci: Disable LED control for Intel BYT-based controllers
- sdhci_am654: Add new SDHCI variant driver to support TI's AM654 SOCs
- sdhci-of-esdhc: Add support for eMMC HS400 mode
- sdhci-omap: Fixup reset support
- sdhci-omap: Workaround errata regarding SDR104/HS200 tuning failures
- sdhci-msm: Fixup sporadic write transfers issues for SDR104/HS200
- sdhci-msm: Fixup dynamical clock gating issues
- various: Complete converting all hosts into using slot GPIO descriptors
Other:
- Move GPIO mmc platform data for mips/sh/arm to GPIO descriptors
- Add new Alcor Micro cardreader PCI driver
- Support runtime power management for memstick rtsx_usb_ms driver
- Use USB remote wakeups for card detection for rtsx_usb misc driver"
* tag 'mmc-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (99 commits)
mmc: mediatek: Add MMC_CAP_SDIO_IRQ support
mmc: renesas_sdhi_internal_dmac: Whitelist r8a774c0
dt-bindings: mmc: renesas_sdhi: Add r8a774c0 support
mmc: core: Cleanup BKOPS support
mmc: core: Drop redundant check in mmc_send_hpi_cmd()
mmc: sdhci-omap: Workaround errata regarding SDR104/HS200 tuning failures (i929)
dt-bindings: sdhci-omap: Add note for cpu_thermal
mmc: sdhci-acpi: Disable LED control for Intel BYT-based controllers
mmc: sdhci-pci: Disable LED control for Intel BYT-based controllers
mmc: sdhci: Add quirk to disable LED control
mmc: mmci: add variant property to set command stop bit
misc: alcor_pci: fix spelling mistake "invailid" -> "invalid"
mmc: meson-gx: add signal resampling
mmc: meson-gx: align default phase on soc vendor tree
mmc: meson-gx: remove useless lock
mmc: meson-gx: make sure the descriptor is stopped on errors
mmc: sdhci_am654: Add Initial Support for AM654 SDHCI driver
dt-bindings: mmc: sdhci-of-arasan: Add deprecated message for AM65
dt-bindings: mmc: sdhci-am654: Document bindings for the host controllers on TI's AM654 SOCs
mmc: sdhci-msm: avoid unused function warning
...
This has been a busy release for the regmap-irq code, there's several
new features been added, including an API cleanup for how we specify
types that affected one existing driver (gpio-max77620):
- Support for hardware that flags rising and falling edges on separate
status bits from Bartosz Golaszewski.
- Support for explicitly clearing interrupts before unmasking from
Bartosz Golaszewski.
- Support for level triggered IRQs from Matti Vaittinen.
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Merge tag 'regmap-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull regmap updates from Mark Brown:
"This has been a busy release for the regmap-irq code, there's several
new features been added, including an API cleanup for how we specify
types that affected one existing driver (gpio-max77620):
- Support for hardware that flags rising and falling edges on
separate status bits from Bartosz Golaszewski.
- Support for explicitly clearing interrupts before unmasking from
Bartosz Golaszewski.
- Support for level triggered IRQs from Matti Vaittinen"
* tag 'regmap-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: irq: add an option to clear status registers on unmask
regmap: regmap-irq/gpio-max77620: add level-irq support
regmap: regmap-irq: Remove default irq type setting from core
regmap: debugfs: convert to DEFINE_SHOW_ATTRIBUTE
regmap: rbtree: convert to DEFINE_SHOW_ATTRIBUTE
regmap: irq: handle HW using separate rising/falling edge interrupts
regmap: add a new macro:REGMAP_IRQ_REG_LINE(_id, _reg_bits)
This has been a very busy release for the core, some fixes, one large new
feature and a big bit of refactoring to update the GPIO API:
- Support for coupled regulators from Dmitry Osipenko based on a prior
attempt by Maciej Purski, allowing us to handle situations where the
voltages on two regulators can't be too far apart from each other.
- Conversion of the GPIO support in both drivers and the core to use
GPIO descriptors rather than numbers, part of the overall project to
remove GPIO numbers.
- Support for standby mode suspend states from Andrei Stefanescu.
- New drivers for Allwinner AXP209, Cirrus Logic Lochnagar and
Microchip MPC16502.
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Merge tag 'regulator-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator updates from Mark Brown:
"This has been a very busy release for the core, some fixes, one large
new feature and a big bit of refactoring to update the GPIO API:
- Support for coupled regulators from Dmitry Osipenko based on a
prior attempt by Maciej Purski, allowing us to handle situations
where the voltages on two regulators can't be too far apart from
each other.
- Conversion of the GPIO support in both drivers and the core to use
GPIO descriptors rather than numbers, part of the overall project
to remove GPIO numbers.
- Support for standby mode suspend states from Andrei Stefanescu.
- New drivers for Allwinner AXP209, Cirrus Logic Lochnagar and
Microchip MPC16502"
* tag 'regulator-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (90 commits)
regulator: tps65910: fix a missing check of return value
regulator: mcp16502: Select REGMAP_I2C to fix build error
regulator: convert to DEFINE_SHOW_ATTRIBUTE
regulator: mcp16502: Fix missing n_voltages setting
regulator: mcp16502: Use #ifdef CONFIG_PM_SLEEP around mcp16502_suspend/resume_noirq
regulator: mcp16502: code cleanup
regulator: act8945a-regulator: make symbol act8945a_pm static
drivers/regulator: fix a missing check of return value
regulator: act8945a-regulator: fix 'defined but not used' compiler warning
regulator: axp20x: fix set_ramp_delay for AXP209/dcdc2
regulator: mcp16502: add support for suspend
mfd: axp20x: use explicit bit defines
mfd: axp20x: Clean up included headers
regulator: dts: enable soft-start and ramp delay for the OLinuXino Lime2
dt-bindings: mfd: axp20x: Add software based soft_start for AXP209 LDO3
regulator: axp20x: add software based soft_start for AXP209 LDO3
dt-bindings: mfd: axp20x: add support for regulator-ramp-delay for AXP209
regulator: axp20x: add support for set_ramp_delay for AXP209
mfd: axp20x: name voltage ramping define properly
regulator: mcp16502: add regulator driver for MCP16502
...
This driver clearly needs OF_GPIO so depend on it.
Fixes a build error.
Cc: Andrei Stefanescu <Andrei.Stefanescu@microchip.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
- ACPI IRQ request deferral
- OMAP: revert deferred wakeup quirk
- MAX7301: fix DMA safe memory handling
- MVEBU: selective probe failure on missing clk
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Merge tag 'gpio-v4.20-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO fixes from Linus Walleij:
"Hopefully last round of GPIO fixes.
The ACPI patch is pretty important for some laptop users, the rest is
driver-specific for embedded (mostly ARM) systems.
I took out one ACPI patch that wasn't critical enough because I
couldn't justify sending it at this point, and that is why the commit
date is today, but the patches have been in linux-next.
Sorry for not sending some of them earlier :(
Notice that we have a co-maintainer for GPIO now, Bartosz Golaszewski,
and he might jump in and make some pull requests at times when I am
off.
Summary:
- ACPI IRQ request deferral
- OMAP: revert deferred wakeup quirk
- MAX7301: fix DMA safe memory handling
- MVEBU: selective probe failure on missing clk"
* tag 'gpio-v4.20-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio: mvebu: only fail on missing clk if pwm is actually to be used
gpio: max7301: fix driver for use with CONFIG_VMAP_STACK
gpio: gpio-omap: Revert deferred wakeup quirk handling for regressions
gpiolib-acpi: Only defer request_irq for GpioInt ACPI event handlers
This patch adds a driver for Cadence GPIO controller.
It can be enabled with GPIO_CADENCE Kconfig option.
It uses generic GPIO infrastructure and works
as an interrupt controller.
At the moment it only supports level sensitive irqs.
Signed-off-by: Jan Kotas <jank@cadence.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Variable err is defined but never used. Remove it. Cleans up warning:
warning: unused variable ‘err’ [-Wunused-variable]
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Calling readl directly instead of going through another function that
results in the same result to remove some overhead. I didn't try to
measure the performance gain, but IMHO there is little benefit from
abstracting a GPIO register access in the GPIO driver.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Remove duplicated assignment statement from aspeed_gpio_probe() function.
Signed-off-by: Tao Ren <taoren@fb.com>
Acked-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
PIOBU pins do not lose their voltage during Backup/Self-refresh.
This patch adds a simple GPIO controller for them and a
maintainer for the driver.
This driver adds support for using the pins as GPIO
offering the possibility to read/set the voltage.
Signed-off-by: Andrei Stefanescu <andrei.stefanescu@microchip.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The gpio IP on Armada 370 at offset 0x18180 has neither a clk nor pwm
registers. So there is no need for a clk as the pwm isn't used anyhow.
So only check for the clk in the presence of the pwm registers. This fixes
a failure to probe the gpio driver for the above mentioned gpio device.
Fixes: 757642f9a5 ("gpio: mvebu: Add limited PWM support")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
spi_read() and spi_write() require DMA-safe memory. When
CONFIG_VMAP_STACK is selected, those functions cannot be used
with buffers on stack.
This patch replaces calls to spi_read() and spi_write() by
spi_write_then_read() which doesn't require DMA-safe buffers.
Fixes: 0c36ec3147 ("gpio: gpio driver for max7301 SPI GPIO expander")
Cc: <stable@vger.kernel.org>
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Commit ec0daae685 ("gpio: omap: Add level wakeup handling for omap4
based SoCs") attempted to fix omap4 GPIO wakeup handling as it was
blocking deeper SoC idle states. However this caused a regression for
GPIOs during runtime having over second long latencies for Ethernet
GPIO interrupt as reportedy by Russell King <rmk+kernel@armlinux.org.uk>.
Let's fix this issue by doing a partial revert of the breaking commit.
We still want to keep the quirk handling around as it is also used for
OMAP_GPIO_QUIRK_IDLE_REMOVE_TRIGGER.
The real fix for omap4 GPIO wakeup handling involves fixes for
omap_set_gpio_trigger() and omap_gpio_unmask_irq() and will be posted
separately. And we must keep the wakeup bit enabled during runtime
because of module doing clock autogating with autoidle configured.
Reported-by: Russell King <rmk+kernel@armlinux.org.uk>
Fixes: ec0daae685 ("gpio: omap: Add level wakeup handling for omap4
based SoCs")
Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: Grygorii Strashko <grygorii.strashko@ti.com>
Cc: Keerthy <j-keerthy@ti.com>
Cc: Ladislav Michl <ladis@linux-mips.org>
Cc: Russell King <rmk+kernel@armlinux.org.uk>
Cc: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Add level active IRQ support to regmap-irq irqchip. Change breaks
existing regmap-irq type setting. Convert the existing drivers which
use regmap-irq with trigger type setting (gpio-max77620) to work
with this new approach. So we do not magically support level-active
IRQs on gpio-max77620 - but add support to the regmap-irq for chips
which support them =)
We do not support distinguishing situation where HW supports rising
and falling edge detection but not both. Separating this would require
inventing yet another flags for IRQ types.
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
The device tree bindings for the MMC card detect and
write protect lines specify that these should be active
low unless "cd-inverted" or "wp-inverted" has been
specified.
However that is not how the kernel code has worked. It
has always respected the flags passed to the phandle in
the device tree, but respected the "cd-inverted" and
"wp-inverted" flags such that if those are set, the
polarity will be the inverse of that specified in the
device tree.
Switch to behaving like the old code did and fix the
regression.
Fixes: 81c85ec15a ("gpio: OF: Parse MMC-specific CD and WP properties")
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Select REGMAP_I2C in Kconfig, since the driver now depends on regmap
and this was missing, thus breaking build on various systems.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
We're getting a reference RPi's firmware node in order to be able to
communicate with it's driver. We should decrease the reference count on
the dt node after being done with it.
Fixes: a98d90e7d5 ("gpio: raspberrypi-exp: Driver for RPi3 GPIO expander via mailbox service")
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Instead of using the name directly from the I2C client
to name the gpio_chip, use dev_name() on the client->dev,
so we get the sometimes more unique device name, as I2C has
a mechanism for naming its devices explicitly in e.g.
board data.
This is a prerequisite for being able to reference
uniquely any I2C GPIO expander defined in a board file
when setting up GPIO descriptor tables.
Reviewed-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
It is possible that the PCA953x is powered down during suspend.
Use regmap cache to assure the registers in the PCA953x are in
line with the driver state after resume.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Drop pca953x_write_single() which is used in one place.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Replace the ad-hoc reg_output output register caching with generic
regcache cache. Drop pca953x_write_single() which is no longer used.
This reduces code duplication.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Convert the driver to use regmap to access the chips. Due to the convoluted
register mapping scheme, implement read/write/volatile check functions that
untangle the mess and perform check accordingly. This patch does not zap the
internal register cache of the PCA953x driver, nor does it push the regmap
access down into the gpiochip accessors to simplify the review. All that is
in subsequent patches.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Instead of having the I2C register calculation function spread across
multiple accessor functions, pull it out into a single function which
returns the adjusted register address.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The ad-hoc i2c block write can be replaced by standard register accessor
function, which correctly handles all the chip details and differences.
Do so to simplify the code.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The PCA957x and PCA953x init functions are almost the same, except for
the different register mapping and one extra write to BKEN register in
case of PCA957x. Factor out the common code.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
At this point, the pca953x_{read,write}_regs_mul() can read single bank
PCA953x GPIO chips as well. Merge the _8 and _mul functions together to
simplify the code a bit.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
At this point, these two functions only differ in whether they do or do not
set the address increment bit. The 16 GPIO case does not need to set the AI
bit, except for PCA9575 on write, while the 24 GPIO and more case does set
the AI bit always. Merge these two functions together to simplify the code
a bit.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
At this point, these two functions only differ in whether they do or do not
set the address increment bit on PCA9575. Merge these two functions together
to simplify the code a bit.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The multi-byte IO on various pca953x chips requires the auto-increment bit,
while other chips toggle the LSbit automatically. Note that LSbit toggling
only alternates between two registers during the IO, it is not the same as
address auto-increment. The driver currently assumes that #gpios > 16 implies
auto-increment, while #gpios <= 16 implies LSbit toggling. This is incorrect
at there are chips with 16 GPIOs which require the auto-increment bit.
The PCA9575, according to NXP datasheet rev. 4.2 from 16 April 2015, section
7.3 Command Register, the bit 7 in command register is the auto-increment
bit, which allows programming multiple registers sequentially.
Set this bit both in pca953x_gpio_set_multiple(), where it fixes the multi
register programming, and in pca957x_write_regs_16(), where is simplifies
the function. In fact, the pca957x_write_regs_16() now looks rather similar
to pca953x_write_regs_24() and pca953x_write_regs_16(), which is intended
for subsequent patches.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The PCAL_PINCTRL_MASK is too large. The extended register block on
PCAL6524, which is the largest chip with this block, has the block
limited to address range 0x40..0x7f. This is because the bit 7 in
the command register is used for the Address Increment functionality.
Trim the mask to 0x60 to match the datasheet and to prevent accidental
overwrite of the AI bit.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Reviewed-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Linus Walleij