Use managed resource allocation in pch and sodaville drivers.
Switch to use for_each_set_bit() in IRQ handlers.
Headers clean up.
Sort headers in inclusion block alphabetically for better maintenance.
Convert to SPDX identifier and fixing MODULE_LICENSE() when appropriate.
Additional format fixes to rectify debug and message printing.
There is a commit which had been applied to v4.20-rc4, that's why dup.
- c3bc3ff9e8 MAINTAINERS: Do maintain Intel GPIO drivers via separate tree
The following is an automated git shortlog grouped by driver:
ich:
- Convert to use SPDX identifier
- Sort headers alphabetically
- Join string literals back
- Convert pr_<level> to dev_<level>
- Switch to use struct device instead of platform_device
- Simplify error handling in ichx_write_bit()
intel-mid:
- Convert to use SPDX identifier
- Remove linux/module.h and sort headers
lynxpoint:
- Convert to use SPDX identifier
- Remove linux/init.h and sort headers
- Use for_each_set_bit() in IRQ handler
MAINTAINERS:
- Do maintain Intel GPIO drivers via separate tree
merrifield:
- Convert to use SPDX identifier
- Remove linux/init.h
pch:
- Convert to use SPDX identifier
- Sort headers alphabetically
- Remove duplicate assignments
- Remove redundant __func__ from debug print
- Use for_each_set_bit() in IRQ handler
- Convert to dev_pm_ops
- Convert to use managed functions pcim_* and devm_*
sch:
- Convert to use SPDX identifier
- Remove linux/init.h and sort headers
sodaville:
- Convert to use SPDX identifier
- Sort headers alphabetically
- Use for_each_set_bit() in IRQ handler
- Convert to use managed functions pcim_* and devm_*
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Merge tag 'intel-gpio-v4.21-1' of git://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-gpio-intel into devel
intel-gpio for v4.21-1
Use managed resource allocation in pch and sodaville drivers.
Switch to use for_each_set_bit() in IRQ handlers.
Headers clean up.
Sort headers in inclusion block alphabetically for better maintenance.
Convert to SPDX identifier and fixing MODULE_LICENSE() when appropriate.
Additional format fixes to rectify debug and message printing.
There is a commit which had been applied to v4.20-rc4, that's why dup.
- c3bc3ff9e8 MAINTAINERS: Do maintain Intel GPIO drivers via separate tree
The following is an automated git shortlog grouped by driver:
ich:
- Convert to use SPDX identifier
- Sort headers alphabetically
- Join string literals back
- Convert pr_<level> to dev_<level>
- Switch to use struct device instead of platform_device
- Simplify error handling in ichx_write_bit()
intel-mid:
- Convert to use SPDX identifier
- Remove linux/module.h and sort headers
lynxpoint:
- Convert to use SPDX identifier
- Remove linux/init.h and sort headers
- Use for_each_set_bit() in IRQ handler
MAINTAINERS:
- Do maintain Intel GPIO drivers via separate tree
merrifield:
- Convert to use SPDX identifier
- Remove linux/init.h
pch:
- Convert to use SPDX identifier
- Sort headers alphabetically
- Remove duplicate assignments
- Remove redundant __func__ from debug print
- Use for_each_set_bit() in IRQ handler
- Convert to dev_pm_ops
- Convert to use managed functions pcim_* and devm_*
sch:
- Convert to use SPDX identifier
- Remove linux/init.h and sort headers
sodaville:
- Convert to use SPDX identifier
- Sort headers alphabetically
- Use for_each_set_bit() in IRQ handler
- Convert to use managed functions pcim_* and devm_*
Before things go out of hand, make it possible to pass
flags when requesting "own" descriptors from a gpio_chip.
This is necessary if the chip wants to request a GPIO with
active low semantics, for example.
Cc: Janusz Krzysztofik <jmkrzyszt@gmail.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Roger Quadros <rogerq@ti.com>
Reviewed-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The problem is reported for allmodconfig build setup:
ERROR: "irq_chip_retrigger_hierarchy" [drivers/gpio/gpio-lpc18xx.ko] undefined!
make[2]: *** [scripts/Makefile.modpost:92: __modpost] Error 1
make[1]: *** [Makefile:1271: modules] Error 2
My testing in runtime shows that it is sufficient to remove .irq_retrigger
callback, which is assigned to unexported irq_chip_retrigger_hierarchy()
function, I did't observe any regressions, and thus apparently it is a
better fix rather than exporting the function defined in kernel/irq/chip.c
(see commit 52b2a05fa7 ("genirq: Export IRQ functions for module use"))
or sticking the GPIO controller driver build to built-in option only.
Reported-by: kbuild test robot <lkp@intel.com>
Fixes: 5ddabfe8d3 ("gpio: lpc18xx: add GPIO pin interrupt controller support")
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.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>
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>
Reduce size of duplicated comments by switching to use SPDX identifier.
No functional change.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.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>
There is no need to include linux/init.h when at the same time
we include linux/module.h.
Remove redundant inclusion.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.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>
There is no need to include linux/module.h when at the same time
we include linux/init.h.
Remove redundant inclusion.
While here, remove no-op macro and sort header block alphabetically
for easy maintenance.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
dev_dbg includes the function name & line number by default when dynamic
debugging is enabled. Hence __func__ is redundant here and removed.
Do the same for any messages in ->probe() since it doesn't make sense.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
For easy grepping on debug purposes join string literals back in the
messages.
While here, fix spelling typo.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
There is no need to have a pointer to struct platform_device.
Instead, switch to use struct device one.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Simplify error handling in ichx_write_bit() and propagate its error code
to the caller.
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>
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>
checkpatch.pl suggests to use SPDX license tag. I am happy to
follow it.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The Zynq's gpios can be configured by the bootloader. But Linux will
erroneously report all gpios as inputs unless we implement
get_direction().
Signed-off-by: Brandon Maier <Brandon.Maier@collins.com>
Tested-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Subsequent generations of Tegra, such as Tegra194, contain a completely
different set of GPIOs. In order to clarify that the Tegra186 defines
are indeed specific to Tegra186, change the prefix from TEGRA_ to
TEGRA186_.
Note that for now we need to keep the old definitions in place to avoid
breaking compilation in file that use this header. Once all users have
been converted to use the new defines, the old ones can be removed.
Also note that this is only a naming change and doesn't affect device
tree ABI.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
From LPC18xx and LPC43xx User Manuals the GPIO controller consists of
the following weakly connected blocks:
* GPIO pin interrupt block at 0x40087000,
* GPIO GROUP0 interrupt block at 0x40088000,
* GPIO GROUP1 interrupt block at 0x40089000,
* GPIO port block at 0x400F4000.
While all 4 sub-controller blocks have their own I/O addresses, moreover
all 3 interrupt blocks are APB0 peripherals and high-speed GPIO block is
an AHB slave, according to the hardware manual interrupt controllers and
GPIO controller block are seen as a single device, all 4 sub-controllers
have the shared reset signal RGU #28 and the same shared clock to access
registers CLK_Mx_GPIO on CCU1.
The change adds descriptions of the currently missing interrupt controller
blocks found on GPIO controller, new added properties are 'reg-names',
'resets', 'interrupt-controller' and '#interrupt-cells', also the example
is updated to reflect the changes in device tree binding description.
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The change adds support of LPC18xx/LPC43xx GPIO pin interrupt controller
block within SoC GPIO controller. The new interrupt controller driver
allows to configure and capture edge or level interrupts on 8 arbitrary
selectedinput GPIO pins, and lift the signals to be reported as NVIC rising
edge interrupts. Configuration of a particular GPIO pin to serve as
interrupt and its mapping to an interrupt on NVIC is done by SCU pin
controller, for more details see description of 'nxp,gpio-pin-interrupt'
device tree property of a GPIO pin [1].
From LPC18xx and LPC43xx User Manuals the GPIO controller consists of
the following blocks:
* GPIO pin interrupt block at 0x40087000, this change adds its support,
* GPIO GROUP0 interrupt block at 0x40088000,
* GPIO GROUP1 interrupt block at 0x40089000,
* GPIO port block at 0x400F4000, it is supported by the original driver.
While all 4 sub-controller blocks have their own I/O addresses, moreover
all 3 interrupt blocks are APB0 peripherals and high-speed GPIO block is
an AHB slave, according to the hardware manual the GPIO controller is
seen as a single block, and 4 sub-controllers have the shared reset signal
RGU #28 and clock to register interface CLK_CPU_GPIO on CCU1.
Likely support of two GPIO group interrupt blocks won't be added in short
term, because the mechanism to mask several interrupt sources is not well
defined.
[1] Documentation/devicetree/bindings/pinctrl/nxp,lpc1850-scu.txt
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This is a non-functional change, it simplifies multiple access to
'struct device' pointer derived from a platform device pointer,
the new local variable will also be used in the following changes.
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Replace GPLv2 header with the SPDX identifier.
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The error cases of mediatek_gpio_bank_probe() would go unnoticed (except
for the dev_err() messages). The probe function should return an error
if one of the banks failed to initialize properly indicated by
not returning non-0.
Fixes: 4ba9c3afda ("gpio: mt7621: Add a driver for MT7621")
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Acked-by: Sean Wang <sean.wang@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
kasprintf() may return NULL on failure of internal allocation thus the
assigned label is not safe if not explicitly checked. On error
mediatek_gpio_bank_probe() returns negative values so -ENOMEM in the
(unlikely) failure case should be fine here.
Fixes: 4ba9c3afda ("gpio: mt7621: Add a driver for MT7621")
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Reviewed-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Acked-by: Sean Wang <sean.wang@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
I'll be getting all GPIO e-mail now, so remove my name from reviewers
of gpio-mockup.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The change simplifies dereferences to the mediated struct device, also
it allows to limit the scope of the platform device usage to probe and
remove functions only.
Non-functional change.
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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>
Convert the legacy system PM callbacks to new ones. Meanwhile, remove the
redundant calls to the PCI for changing a power state since it's done by bus
code.
While here, remove weird indentation with backslash in use.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
This makes the error handling much more simpler than open-coding everything
and in addition makes the probe function smaller an tidier.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
This makes the error handling much more simpler than open-coding everything
and in addition makes the probe function smaller an tidier.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
When retrieveing CD (card detect) and WP (write protect)
GPIO handles from the device tree, make sure to assign
them active low by default unless the "cd-inverted" or
"wp-inverted" properties are set. These properties mean
that respective signal is active HIGH since the SDHCI
specification stipulates that this kind of signals
should be treated as active LOW.
If the twocell GPIO flag is also specified as active
low, well that's nice and we will silently ignore the
tautological specification.
If however the GPIO line is specified as active low
in the GPIO flasg cell and "cd-inverted" or "wp-inverted"
is also specified, the latter takes precedence and we
print a warning.
The current effect on the MMC slot-gpio core are as
follows:
For CD GPIOs: no effect. The current code in
mmc/core/host.c calls mmc_gpiod_request_cd() with
the "override_active_level" argument set to true,
which means that whatever the GPIO descriptor
thinks about active low/high will be ignored, the
core will use the MMC_CAP2_CD_ACTIVE_HIGH to keep
track of this and reads the raw value from the
GPIO descriptor, totally bypassing gpiolibs inversion
semantics. I plan to clean this up at a later point
passing the handling of inversion semantics over
to gpiolib, so this patch prepares the ground for
that.
Fow WP GPIOs: this is probably fixing a bug, because
the code in mmc/core/host.c calls mmc_gpiod_request_ro()
with the "override_active_level" argument set to false,
which means it will respect the inversion semantics of
the gpiolib and ignore the MMC_CAP2_RO_ACTIVE_HIGH
flag for everyone using this through device tree.
However the code in host.c confusingly goes to great
lengths setting up the MMC_CAP2_RO_ACTIVE_HIGH flag
from the GPIO descriptor and by reading the "wp-inverted"
property of the node. As far as I can tell this is all
in vain and the inversion is broken: device trees that
use "wp-inverted" do not work as intended, instead the
only way to actually get inversion on a line is by
setting the second cell flag to GPIO_ACTIVE_HIGH (which
will be the default) or GPIO_ACTIVE_LOW if they want
the proper MMC semantics. Presumably all device trees do
this right but we need to parse and handle this properly.
Cc: linux-mmc@vger.kernel.org
Cc: linux-gpio@vger.kernel.org
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The sub-nodes should not be called gpio-controller, but simply gpio.
Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
It's easy to verify that the change of drivers/gpio/gpiolib-of.c license
header to SPDX standard changes the license from GPLv2+ to GPLv2, and
this change corrects it.
Fixes: dae5f0afcf ("gpio: Use SPDX header for core library")
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Remove linux/gpio/driver.h which is included more than once
Signed-off-by: Brajeswar Ghosh <brajeswar.linux@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Some SoCs need the gpio clock to be enabled before accessing
HW registers. This patch add the optional clock handling.
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Stefan Agner <stefan@agner.ch>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: linux-gpio@vger.kernel.org
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
During noirq suspend/resume phase, GPIO irq could arrive
and its registers like IMR will be changed by irq handle
process, to make the GPIO registers exactly when it is
powered ON after resume, move the GPIO noirq suspend/resume
callback to syscore suspend/resume phase, local irq is
disabled at this phase so GPIO registers are atomic.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Drop the broken to_gpio_irq_chip() container_of() helper, which would
break the build for anyone who tries to use it.
Specifically, struct gpio_irq_chip only holds a pointer to a struct
irq_chip so using container_of() on an irq-chip pointer makes no sense.
Fixes: da80ff81a8 ("gpio: Move irqchip into struct gpio_irq_chip")
Cc: Thierry Reding <treding@nvidia.com>
Cc: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This patch updates license to use SPDX-License-Identifier
instead of verbose license text.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
