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With the final call to fput() on a file descriptor, the release action
may be deferred and scheduled on a work queue. The reference count of
that descriptor is still zero and it must not be used. It's possible
that a GPIO change, we want to notify the user-space about, happens
AFTER the reference count on the file descriptor associated with the
character device went down to zero but BEFORE the .release() callback
was called from the workqueue and so BEFORE we unregistered from the
notifier.
Using the regular get_file() routine in this situation triggers the
following warning:
struct file::f_count incremented from zero; use-after-free condition present!
So use the get_file_active() variant that will return NULL on file
descriptors that have been or are being released.
Fixes: 40b7c49950bd ("gpio: cdev: put emitting the line state events on a workqueue")
Reported-by: Alexander Sverdlin <alexander.sverdlin@siemens.com>
Closes: https://lore.kernel.org/all/5d605f7fc99456804911403102a4fe999a14cc85.camel@siemens.com/
Tested-by: Alexander Sverdlin <alexander.sverdlin@siemens.com>
Link: https://lore.kernel.org/r/20251117-gpio-cdev-get-file-v1-1-28a16b5985b8@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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tb10x_set_bits() is not referenced anywhere leading to W=1 warning:
gpio-tb10x.c:59:20: error: unused function 'tb10x_set_bits' [-Werror,-Wunused-function]
After its removal, tb10x_reg_write() becomes unused as well.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20251106-gpio-of-match-v1-1-50c7115a045e@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Restore the set_config operation, as it was lost during the refactoring of
the gpio-aggregator driver while creating the gpio forwarder library.
Fixes: b31c68fd851e7 ("gpio: aggregator: handle runtime registration of gpio_desc in gpiochip_fwd")
Reported-by: kernel test robot <oliver.sang@intel.com>
Closes: https://lore.kernel.org/oe-lkp/202509281206.a7334ae8-lkp@intel.com
Signed-off-by: Thomas Richard <thomas.richard@bootlin.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20250929-gpio-aggregator-fix-set-config-callback-v1-1-39046e1da609@bootlin.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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If the memory allocation in gpiolib_seq_start() fails, the s->private
field remains uninitialized and is later dereferenced without checking
in gpiolib_seq_stop(). Initialize s->private to NULL before calling
kzalloc() and check it before dereferencing it.
Fixes: e348544f7994 ("gpio: protect the list of GPIO devices with SRCU")
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20251103141132.53471-1-brgl@bgdev.pl
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Looking up a GPIO controller by label that is the name of the software
node is wonky at best - the GPIO controller driver is free to set
a different label than the name of its firmware node. We're already being
passed a firmware node handle attached to the GPIO device to
swnode_get_gpio_device() so use it instead for a more precise lookup.
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Fixes: e7f9ff5dc90c ("gpiolib: add support for software nodes")
Link: https://lore.kernel.org/r/20251103-reset-gpios-swnodes-v4-4-6461800b6775@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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The generic_handle_domain_irq() function resolves the hardware IRQ
internally. The driver performed a duplicative mapping by calling
irq_find_mapping() first, which could lead to an RCU stall.
Delete the redundant irq_find_mapping() call and pass the hardware IRQ
directly to generic_handle_domain_irq().
Fixes: c5a4b6fd31e8 ("gpio: Add support for Intel LJCA USB GPIO driver")
Signed-off-by: Haotian Zhang <vulab@iscas.ac.cn>
Link: https://lore.kernel.org/r/20251023070231.1305-1-vulab@iscas.ac.cn
[Bartosz: remove unused variable]
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-gpio-intel into gpio/for-current
intel-gpio fixes for v6.18-1
* Make set debounce errors non-fatal in GPIO ACPI case
* Use human readable error when printing a message in GPIO ACPI code
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One of the coccinelle recipe suggests to use %pe when we deal with
an error pointer. Do it so.
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Julia Lawall <julia.lawall@inria.fr>
Closes: https://lore.kernel.org/r/202510231350.calxvXIm-lkp@intel.com/
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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Commit 16c07342b542 ("gpiolib: acpi: Program debounce when finding GPIO")
adds a gpio_set_debounce_timeout() call to acpi_find_gpio() and makes
acpi_find_gpio() fail if this fails.
But gpio_set_debounce_timeout() failing is a somewhat normal occurrence,
since not all debounce values are supported on all GPIO/pinctrl chips.
Making this an error for example break getting the card-detect GPIO for
the micro-sd slot found on many Bay Trail tablets, breaking support for
the micro-sd slot on these tablets.
acpi_request_own_gpiod() already treats gpio_set_debounce_timeout()
failures as non-fatal, just warning about them.
Add a acpi_gpio_set_debounce_timeout() helper which wraps
gpio_set_debounce_timeout() and warns on failures and replace both existing
gpio_set_debounce_timeout() calls with the helper.
Since the helper only warns on failures this fixes the card-detect issue.
Fixes: 16c07342b542 ("gpiolib: acpi: Program debounce when finding GPIO")
Cc: stable@vger.kernel.org
Cc: Mario Limonciello <superm1@kernel.org>
Signed-off-by: Hans de Goede <hansg@kernel.org>
Acked-by: Andy Shevchenko <andy@kernel.org>
Link: https://lore.kernel.org/stable/20250920201200.20611-1-hansg%40kernel.org
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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The direction of the IDIO-16 GPIO lines is fixed with the first 16 lines
as output and the remaining 16 lines as input. Set the gpio_config
fixed_direction_output member to represent the fixed direction of the
GPIO lines.
Fixes: db02247827ef ("gpio: idio-16: Migrate to the regmap API")
Reported-by: Mark Cave-Ayland <mark.caveayland@nutanix.com>
Closes: https://lore.kernel.org/r/9b0375fd-235f-4ee1-a7fa-daca296ef6bf@nutanix.com
Suggested-by: Michael Walle <mwalle@kernel.org>
Cc: stable@vger.kernel.org # ae495810cffe: gpio: regmap: add the .fixed_direction_output configuration parameter
Cc: stable@vger.kernel.org
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: William Breathitt Gray <wbg@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20251020-fix-gpio-idio-16-regmap-v2-3-ebeb50e93c33@kernel.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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There are GPIO controllers such as the one present in the LX2160ARDB
QIXIS FPGA which have fixed-direction input and output GPIO lines mixed
together in a single register. This cannot be modeled using the
gpio-regmap as-is since there is no way to present the true direction of
a GPIO line.
In order to make this use case possible, add a new configuration
parameter - fixed_direction_output - into the gpio_regmap_config
structure. This will enable user drivers to provide a bitmap that
represents the fixed direction of the GPIO lines.
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Michael Walle <mwalle@kernel.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Attempting to load the pci-idio-16 module fails during regmap
initialization with a return error -EINVAL. This is a result of the
regmap cache failing initialization. Set the idio_16_regmap_config
max_register member to fix this failure.
Fixes: 73d8f3efc5c2 ("gpio: pci-idio-16: Migrate to the regmap API")
Reported-by: Mark Cave-Ayland <mark.caveayland@nutanix.com>
Closes: https://lore.kernel.org/r/9b0375fd-235f-4ee1-a7fa-daca296ef6bf@nutanix.com
Suggested-by: Mark Cave-Ayland <mark.caveayland@nutanix.com>
Cc: stable@vger.kernel.org
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: William Breathitt Gray <wbg@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20251020-fix-gpio-idio-16-regmap-v2-2-ebeb50e93c33@kernel.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Attempting to load the 104-idio-16 module fails during regmap
initialization with a return error -EINVAL. This is a result of the
regmap cache failing initialization. Set the idio_16_regmap_config
max_register member to fix this failure.
Fixes: 2c210c9a34a3 ("gpio: 104-idio-16: Migrate to the regmap API")
Reported-by: Mark Cave-Ayland <mark.caveayland@nutanix.com>
Closes: https://lore.kernel.org/r/9b0375fd-235f-4ee1-a7fa-daca296ef6bf@nutanix.com
Suggested-by: Mark Cave-Ayland <mark.caveayland@nutanix.com>
Cc: stable@vger.kernel.org
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: William Breathitt Gray <wbg@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20251020-fix-gpio-idio-16-regmap-v2-1-ebeb50e93c33@kernel.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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The slimbus regmap passed to the GPIO driver down from MFD does not use
fast_io. This means a mutex is used for locking and thus this GPIO chip
must not be used in atomic context. Change the can_sleep switch in
struct gpio_chip to true.
Fixes: 59c324683400 ("gpio: wcd934x: Add support to wcd934x gpio controller")
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Add "INTC10D1" ACPI device-id for MTL-CVF devices, like the Dell Latitude
7450.
Closes: https://bugzilla.redhat.com/show_bug.cgi?id=2368506
Signed-off-by: Hans de Goede <hansg@kernel.org>
Acked-by: Israel Cepeda <israel.a.cepeda.lopez@intel.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB / Thunderbolt updates from Greg KH:
"Here is the big set of USB and thunderbolt drivers for 6.18-rc1. It
was another normal development cycle, with lots of the usual drivers
getting updates:
- Thunderbolt driver cleanups and additions
- dwc3 driver updates
- dwc2 driver updates
- typec driver updates
- xhci driver updates and additions
- offload USB engine updates for better power management
- unused tracepoint removals
- usb gadget fixes and updates as more users start to rely on these
drivers instead of the "old" function gadget drivers
- new USB device ids
- other minor driver USB driver updates
- new USB I/O driver framework and driver additions"
The last item, the usb i/o driver, has an i2c and gpio driver added
through this tree. Those drivers were acked by the respective
subsystem maintainers.
All of these have been in linux-next for a while"
* tag 'usb-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (132 commits)
usb: vhci-hcd: Prevent suspending virtually attached devices
USB: serial: option: add SIMCom 8230C compositions
thunderbolt: Fix use-after-free in tb_dp_dprx_work
usb: xhci: align PORTSC trace with one-based port numbering
usb: xhci: correct indentation for PORTSC tracing function
usb: xhci: improve TR Dequeue Pointer mask
usb: xhci-pci: add support for hosts with zero USB3 ports
usb: xhci: Update a comment about Stop Endpoint retries
Revert "usb: xhci: Avoid Stop Endpoint retry loop if the endpoint seems Running"
usb: gadget: f_rndis: Refactor bind path to use __free()
usb: gadget: f_ecm: Refactor bind path to use __free()
usb: gadget: f_acm: Refactor bind path to use __free()
usb: gadget: f_ncm: Refactor bind path to use __free()
usb: gadget: Introduce free_usb_request helper
usb: gadget: Store endpoint pointer in usb_request
usb: host: xhci-rcar: Add Renesas RZ/G3E USB3 Host driver support
usb: host: xhci-plat: Add .post_resume_quirk for struct xhci_plat_priv
usb: host: xhci-rcar: Move R-Car reg definitions
dt-bindings: usb: Document Renesas RZ/G3E USB3HOST
usb: gadget: f_fs: Fix epfile null pointer access after ep enable.
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git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control updates from Linus Walleij:
"We have GPIO awareness in the pin control core and an interesting
AAEON driver.
Core changes:
- Allow pins to be identified/marked as GPIO mode with a special
callback.
The pin controller core is now "aware" if a pin is in GPIO mode if
the callback is implemented in the driver, and can thus be marked
as "strict", i.e. disallowing simultaneous use of a line as GPIO
and another function such as I2C.
This is enabled in the Qualcomm TLMM driver and also implemeted
from day 1 in the new Broadcom STB driver
- Rename the pin config option PIN_CONFIG_OUTPUT to PIN_CONFIG_LEVEL
to better describe what the config is doing, as well as making it
more intuitive what shall be returned when reading this property
New drivers:
- Qualcomm SDM660 LPASS LPI TLMM pin controller subdriver
- Qualcomm Glymur family pin controller driver
- Broadcom STB family pin controller driver
- Tegra186 pin controller driver
- AAEON UP pin controller support.
This is some special pin controller that works as an external
advanced line MUX and amplifier for signals from an Intel SoC. A
cooperative effort with the GPIO maintainer was needed to reach a
solution where we reuse code from the GPIO aggregator/forwarder
driver
- Renesas RZ/T2H and RZ/N2H pin controller support
- Axis ARTPEC-8 subdriver for the Samsung pin controller driver
Improvements:
- Output enable (OEN) support in the Renesas RZG2L driver
- Properly support bias pull up/down in the pinctrl-single driver
- Move over all GPIO portions using generic MMIO GPIO to the new
generic GPIO chip management which has a nice and separate API
- Proper DT bindings for some older Broadcom SoCs
- External GPIO (EGPIO) support in the Qualcomm SM8250
Deleted code:
- Dropped the now unused Samsung S3C24xx drivers"
* tag 'pinctrl-v6.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (75 commits)
pinctrl: use more common syntax for compound literals
pinctrl: Simplify printks with pOF format
pinctrl: qcom: Add SDM660 LPASS LPI TLMM
dt-bindings: pinctrl: qcom: Add SDM660 LPI pinctrl
pinctrl: qcom: lpass-lpi: Add ability to use custom pin offsets
pinctrl: qcom: Add glymur pinctrl driver
dt-bindings: pinctrl: qcom: Add Glymur pinctrl
pinctrl: qcom: sm8250: Add egpio support
pinctrl: generic: rename PIN_CONFIG_OUTPUT to LEVEL
pinctrl: keembay: fix double free in keembay_build_functions()
pinctrl: spacemit: fix typo in PRI_TDI pin name
pinctrl: eswin: Fix regulator error check and Kconfig dependency
pinctrl: bcm: Add STB family pin controller driver
dt-bindings: pinctrl: Add support for Broadcom STB pin controller
pinctrl: qcom: make the pinmuxing strict
pinctrl: qcom: mark the `gpio` and `egpio` pins function as non-strict functions
pinctrl: qcom: add infrastructure for marking pin functions as GPIOs
pinctrl: allow to mark pin functions as requestable GPIOs
pinctrl: qcom: use generic pin function helpers
pinctrl: make struct pinfunction a pointer in struct function_desc
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git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio updates from Bartosz Golaszewski:
"There are two new drivers and support for more models in existing
ones.
The generic GPIO API has been reworked and all users converted
which allowed us to move the fields specific to the generic GPIO
implementation out of the high-level struct gpio_chip into its own
structure that wraps the gpio_chip.
Other than that, there's nothing too exciting. Mostly minor tweaks and
fixes all over the place, some refactoring and some small new features
in helper modules.
GPIO core:
- add support for sparse pin ranges to the glue between GPIO and
pinctrl
- use a common prefix across all GPIO descriptor flags for improved
namespacing
New drivers:
- add new GPIO driver for the Nuvoton NCT6694
- add new GPIO driver for MAX7360
Driver improvements:
- add support for Tegra 256 to the gpio-tegra186 driver
- add support for Loongson-2K0300 to the gpio-loongson-64bit driver
- refactor the gpio-aggregator module to expose its GPIO forwarder
API to other in-kernel users (to enable merging of a new pinctrl
driver that uses it)
- convert all remaining drivers to using the modernized generic GPIO
chip API and remove the old interface
- stop displaying global GPIO numbers in debugfs output of controller
drivers
- extend the gpio-regmap helper with a new config option and improve
its support for GPIO interrupts
- remove redundant fast_io parameter from regmap configs in GPIO
drivers that already use MMIO regmaps which imply it
- add support for a new model in gpio-mmio: ixp4xx expansion bus
- order includes alphabetically in a few drivers for better
readability
- use generic device properties where applicable
- use devm_mutex_init() where applicable
- extend build coverage of drivers by enabling more to be compiled
with COMPILE_TEST enabled
- allow building gpio-stmpe as a module
- use dev_err_probe() where it makes sense in drivers
Late driver fixes:
- fix setting GPIO direction to output in gpio-mpfs
Documentation:
- document the usage of software nodes with GPIO chips
Device-tree bindings:
- Add DT bindings documents for new hardware: Tegra256, MAX7360
- Document a new model in Loongson bindings: LS2K0300
- Document a new model using the generic GPIO binding: IXP4xx
- Convert the DT binding for fsl,mxs-pinctrl to YAML
- fix the schema ID in the "trivial" GPIO schema
- describe GPIO hogs in the generic GPIO binding"
* tag 'gpio-updates-for-v6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (122 commits)
gpio: mpfs: fix setting gpio direction to output
gpio: generic: move GPIO_GENERIC_ flags to the correct header
gpio: generic: rename BGPIOF_ flags to GPIO_GENERIC_
gpio: nomadik: fix the debugfs helper stub
MAINTAINERS: Add entry on MAX7360 driver
input: misc: Add support for MAX7360 rotary
input: keyboard: Add support for MAX7360 keypad
gpio: max7360: Add MAX7360 gpio support
gpio: regmap: Allow to provide init_valid_mask callback
gpio: regmap: Allow to allocate regmap-irq device
pwm: max7360: Add MAX7360 PWM support
pinctrl: Add MAX7360 pinctrl driver
mfd: Add max7360 support
dt-bindings: mfd: gpio: Add MAX7360
rtc: Add Nuvoton NCT6694 RTC support
hwmon: Add Nuvoton NCT6694 HWMON support
watchdog: Add Nuvoton NCT6694 WDT support
can: Add Nuvoton NCT6694 CANFD support
i2c: Add Nuvoton NCT6694 I2C support
gpio: Add Nuvoton NCT6694 GPIO support
...
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Madhavan Srinivasan:
- powerpc support for BPF arena and arena atomics
- Patches to switch to msi parent domain (per-device MSI domains)
- Add a lock contention tracepoint in the queued spinlock slowpath
- Fixes for underflow in pseries/powernv msi and pci paths
- Switch from legacy-of-mm-gpiochip dependency to platform driver
- Fixes for handling TLB misses
- Introduce support for powerpc papr-hvpipe
- Add vpa-dtl PMU driver for pseries platform
- Misc fixes and cleanups
Thanks to Aboorva Devarajan, Aditya Bodkhe, Andrew Donnellan, Athira
Rajeev, Cédric Le Goater, Christophe Leroy, Erhard Furtner, Gautam
Menghani, Geert Uytterhoeven, Haren Myneni, Hari Bathini, Joe Lawrence,
Kajol Jain, Kienan Stewart, Linus Walleij, Mahesh Salgaonkar, Nam Cao,
Nicolas Schier, Nysal Jan K.A., Ritesh Harjani (IBM), Ruben Wauters,
Saket Kumar Bhaskar, Shashank MS, Shrikanth Hegde, Tejas Manhas, Thomas
Gleixner, Thomas Huth, Thorsten Blum, Tyrel Datwyler, and Venkat Rao
Bagalkote.
* tag 'powerpc-6.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (49 commits)
powerpc/pseries: Define __u{8,32} types in papr_hvpipe_hdr struct
genirq/msi: Remove msi_post_free()
powerpc/perf/vpa-dtl: Add documentation for VPA dispatch trace log PMU
powerpc/perf/vpa-dtl: Handle the writing of perf record when aux wake up is needed
powerpc/perf/vpa-dtl: Add support to capture DTL data in aux buffer
powerpc/perf/vpa-dtl: Add support to setup and free aux buffer for capturing DTL data
docs: ABI: sysfs-bus-event_source-devices-vpa-dtl: Document sysfs event format entries for vpa_dtl pmu
powerpc/vpa_dtl: Add interface to expose vpa dtl counters via perf
powerpc/time: Expose boot_tb via accessor
powerpc/32: Remove PAGE_KERNEL_TEXT to fix startup failure
powerpc/fprobe: fix updated fprobe for function-graph tracer
powerpc/ftrace: support CONFIG_FUNCTION_GRAPH_RETVAL
powerpc64/modules: replace stub allocation sentinel with an explicit counter
powerpc64/modules: correctly iterate over stubs in setup_ftrace_ool_stubs
powerpc/ftrace: ensure ftrace record ops are always set for NOPs
powerpc/603: Really copy kernel PGD entries into all PGDIRs
powerpc/8xx: Remove left-over instruction and comments in DataStoreTLBMiss handler
powerpc/pseries: HVPIPE changes to support migration
powerpc/pseries: Enable hvpipe with ibm,set-system-parameter RTAS
powerpc/pseries: Enable HVPIPE event message interrupt
...
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mpfs_gpio_direction_output() actually sets the line to input mode.
Use the correct register settings for output mode so that this function
actually works as intended.
This was a copy-paste mistake made when converting to regmap during the
driver submission process. It went unnoticed because my test for output
mode is toggling LEDs on an Icicle kit which functions with the
incorrect code. The internal reporter has yet to test the patch, but on
their system the incorrect setting may be the reason for failures to
drive the GPIO lines on the BeagleV-fire board.
CC: stable@vger.kernel.org
Fixes: a987b78f3615e ("gpio: mpfs: add polarfire soc gpio support")
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20250925-boogieman-carrot-82989ff75d10@spud
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Make the flags passed to gpio_generic_chip_init() use the same prefix as
the rest of the modernized generic GPIO chip API.
Link: https://lore.kernel.org/r/20250917-gpio-generic-flags-v1-1-69f51fee8c89@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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The gpio_regmap structure is leaked on the error path. Fix this by
jumping to the appropriate kfree instead of returning directly.
Fixes: db305161880a ("gpio: regmap: Allow ngpio to be read from the property")
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Suggested-by: Michael Walle <mwalle@kernel.org>
Reviewed-by: Michael Walle <mwalle@kernel.org>
Link: https://lore.kernel.org/r/20250922142427.3310221-7-ioana.ciornei@nxp.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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When a software-node gets added to a device which already has another
fwnode as primary node it will become the secondary fwnode for that
device.
Currently if a software-node with GPIO properties ends up as the secondary
fwnode then gpiod_find_by_fwnode() will fail to find the GPIOs.
Add a new gpiod_fwnode_lookup() helper which falls back to calling
gpiod_find_by_fwnode() with the secondary fwnode if the GPIO was not
found in the primary fwnode.
Fixes: e7f9ff5dc90c ("gpiolib: add support for software nodes")
Cc: stable@vger.kernel.org
Signed-off-by: Hans de Goede <hansg@kernel.org>
Reviewed-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Link: https://lore.kernel.org/r/20250920200955.20403-1-hansg@kernel.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd into gpio/for-next
Pull changes from the immutable branch between MFD, GPIO, Input, Pinctrl
and PWM trees containing the GPIO driver for max7360.
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd into gpio/for-next
Pull changes from the immutable branch between MFD, GPIO, HWMON, I2C,
CAN, RTC and Watchdog trees containing GPIO support for Nuvoton NCT6694.
|
|
Add driver for Maxim Integrated MAX7360 GPIO/GPO controller.
Two sets of GPIOs are provided by the device:
- Up to 8 GPIOs, shared with the PWM and rotary encoder functionalities.
These GPIOs also provide interrupts on input changes.
- Up to 6 GPOs, on unused keypad columns pins.
Co-developed-by: Kamel Bouhara <kamel.bouhara@bootlin.com>
Signed-off-by: Kamel Bouhara <kamel.bouhara@bootlin.com>
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Link: https://lore.kernel.org/r/20250824-mdb-max7360-support-v14-7-435cfda2b1ea@bootlin.com
Signed-off-by: Lee Jones <lee@kernel.org>
|
|
Allows to populate the gpio_regmap_config structure with
init_valid_mask() callback to set on the final gpio_chip structure.
Reviewed-by: Michael Walle <mwalle@kernel.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Link: https://lore.kernel.org/r/20250824-mdb-max7360-support-v14-6-435cfda2b1ea@bootlin.com
Signed-off-by: Lee Jones <lee@kernel.org>
|
|
GPIO controller often have support for IRQ: allow to easily allocate
both gpio-regmap and regmap-irq in one operation.
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Link: https://lore.kernel.org/r/20250824-mdb-max7360-support-v14-5-435cfda2b1ea@bootlin.com
Signed-off-by: Lee Jones <lee@kernel.org>
|
|
This driver supports GPIO and IRQ functionality for NCT6694 MFD
device based on USB interface.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Ming Yu <a0282524688@gmail.com>
Link: https://lore.kernel.org/r/20250912091952.1169369-3-a0282524688@gmail.com
Signed-off-by: Lee Jones <lee@kernel.org>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-gpio-intel into gpio/for-current
intel-gpio fixes for v6.17-rc7
* Fix a regression to make GpioInt() by index work again
* Ingnore spurious wakeups from touchpad on GPD G1619-05
* Accept debounce from GpioIo() resources
|
|
Since commit 7c010d463372 ("gpiolib: acpi: Make sure we fill struct
acpi_gpio_info"), uninitialized acpi_gpio_info struct are passed to
__acpi_find_gpio() and later in the call stack info->quirks is used in
acpi_populate_gpio_lookup. This breaks the i2c_hid_cpi driver:
[ 58.122916] i2c_hid_acpi i2c-UNIW0001:00: HID over i2c has not been provided an Int IRQ
[ 58.123097] i2c_hid_acpi i2c-UNIW0001:00: probe with driver i2c_hid_acpi failed with error -22
Fix this by initializing the acpi_gpio_info pass to __acpi_find_gpio()
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=220388
Fixes: 7c010d463372 ("gpiolib: acpi: Make sure we fill struct acpi_gpio_info")
Signed-off-by: Sébastien Szymanski <sebastien.szymanski@armadeus.com>
Tested-by: Hans de Goede <hansg@kernel.org>
Reviewed-by: Hans de Goede <hansg@kernel.org>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Tested-By: Calvin Owens <calvin@wbinvd.org>
Cc: stable@vger.kernel.org
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
|
|
We need the USB fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
Add a a driver for the GPIO auxbus child device of the Intel USBIO USB
IO-expander used by the MIPI cameras on various new (Meteor Lake and
later) Intel laptops.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Co-developed-by: Hans de Goede <hansg@kernel.org>
Signed-off-by: Hans de Goede <hansg@kernel.org>
Signed-off-by: Israel Cepeda <israel.a.cepeda.lopez@intel.com>
Link: https://lore.kernel.org/r/20250911181343.77398-3-hansg@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
With all users of bgpio_init() converted to using the modernized generic
GPIO chip API, we can now move the gpio-mmio-specific fields out of
struct gpio_chip and into the dedicated struct gpio_generic_chip. To
that end: adjust the gpio-mmio driver to the new layout, update the
docs, etc.
The changes in gpio-mlxbf2.c and gpio-mpc8xxx.c are here and not in their
respective conversion commits because the former passes the address of
the generic chip's lock to the __releases() annotation and we cannot
really hide it while gpio-mpc8xxx.c accesses the shadow registers in a
driver-specific workaround and there's no reason to make them available
in a public API.
Also: drop the relevant task from TODO as it's now done.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250910-gpio-mmio-gpio-conv-part4-v2-15-f3d1a4c57124@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250910-gpio-mmio-gpio-conv-part4-v2-14-f3d1a4c57124@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250910-gpio-mmio-gpio-conv-part4-v2-13-f3d1a4c57124@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.
Reviewed-by: Yixun Lan <dlan@gentoo.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250910-gpio-mmio-gpio-conv-part4-v2-12-f3d1a4c57124@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.
Reviewed-by: Samuel Holland <samuel.holland@sifive.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250910-gpio-mmio-gpio-conv-part4-v2-11-f3d1a4c57124@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250910-gpio-mmio-gpio-conv-part4-v2-10-f3d1a4c57124@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
This driver uses its own spinlock in interrupt routines while the
generic GPIO chip callbacks use a separate one. This is, of course, racy
so use the fact that the lock in generic GPIO chip is also a spinlock and
convert the interrupt handling functions in this module to using the
provided generic GPIO chip locking API.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250910-gpio-mmio-gpio-conv-part4-v2-9-f3d1a4c57124@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250910-gpio-mmio-gpio-conv-part4-v2-8-f3d1a4c57124@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Tested-by: Florian Fainelli <florian.fainelli@broadcom.com>
Acked-by: Doug Berger <opendmb@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250910-gpio-mmio-gpio-conv-part4-v2-7-f3d1a4c57124@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
The conversion to using the modernized generic GPIO chip API was
incomplete without also converting the direct calls to write/read_reg()
callbacks. Use the provided wrappers from linux/gpio/generic.h.
Fixes: 38d98a822c14 ("gpio: xgene-sb: use new generic GPIO chip API")
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250910-gpio-mmio-gpio-conv-part4-v2-6-f3d1a4c57124@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
This driver uses its own raw spinlock in interrupt routines while the
generic GPIO chip callbacks use a separate one. This is, of course, racy
so use the fact that the lock in generic GPIO chip is also a raw
spinlock and convert the interrupt handling functions in this module to
using the provided generic GPIO chip locking API.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250910-gpio-mmio-gpio-conv-part4-v2-5-f3d1a4c57124@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250910-gpio-mmio-gpio-conv-part4-v2-4-f3d1a4c57124@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250910-gpio-mmio-gpio-conv-part4-v2-3-f3d1a4c57124@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250910-gpio-mmio-gpio-conv-part4-v2-2-f3d1a4c57124@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
Increase build coverage by allowing the module to be built with
COMPILE_TEST=y.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250910-gpio-mmio-gpio-conv-part4-v2-1-f3d1a4c57124@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
While these flags are private within drivers/gpio/, when looking at the
code, it's not really clear they are GPIO-specific. Since these are GPIO
descriptor flags, prepend their names with a common "GPIOD" prefix.
While at it: update the flags' docs: make spelling consistent, correct
outdated information, etc.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250909-rename-gpio-flags-v1-1-bda208a40856@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
The (typeof(foo)) construct is unusual in the kernel, use a more typical
syntax by explicitly spelling out the type.
Link: https://lore.kernel.org/all/20250909-gpio-mmio-gpio-conv-part4-v1-13-9f723dc3524a@linaro.org/
Suggested-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Link: https://lore.kernel.org/r/20250910-make-compound-literals-normal-again-v1-3-076ee7738a0b@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
Currently the error check from the call to platform_get_irq is always
false because an unsigned int chip->irq.parents[i] is being used to
to perform the less than zero error check. Fix this by using the int
variable ret to perform the check.
Fixes: 03c146cb6cd1 ("gpio: loongson-64bit: Add support for Loongson-2K0300 SoC")
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Reviewed-by: Huacai Chen <chenhuacai@loongson.cn>
Reviewed-by: Yao Zi <ziyao@disroot.org>
Link: https://lore.kernel.org/r/20250909190356.870000-1-colin.i.king@gmail.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
Remove unnecessary semicolons reported by Coccinelle/coccicheck and the
semantic patch at scripts/coccinelle/misc/semicolon.cocci.
Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Link: https://lore.kernel.org/r/20250909065913.4011133-1-nichen@iscas.ac.cn
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
This generic pin config property is confusingly named so let's
rename it to make things clearer.
There are already drivers in the tree that use PIN_CONFIG_OUTPUT
to *read* the value of an output driven pin, which is a big
semantic confusion for the head: are we then reading the
setting of the output or the actual value/level that is put
out on the pin?
We already have PIN_CONFIG_OUTPUT_ENABLE that turns on driver
buffers for output, so this can by logical conclusion only
drive the voltage level if it should be any different.
But if we read the pin, are we then reading the *setting* of
the output value or the *actual* value we can see on the
line?
If the pin has not first been set into output mode with
PIN_CONFIG_OUTPUT_ENABLE, but is instead in some input mode
or tristate, what will reading this property actually
return?
Reading the current users reading this property it is clear
that what we read is the logical level of the pin as 0 or 1
depending on if it is low or high.
Rename it to PIN_CONFIG_LEVEL so it is crystal clear that
we set or read the voltage level of the pin and nothing else.
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
|
|
Use devm_mutex_init() instead of hand-writing it.
This saves some LoC, improves readability and saves some space in the
generated .o file.
Before:
======
text data bss dec hex filename
8431 1808 192 10431 28bf drivers/gpio/gpio-pisosr.o
After:
=====
text data bss dec hex filename
8112 1736 192 10040 2738 drivers/gpio/gpio-pisosr.o
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Andrew Davis <afd@ti.com>
Link: https://lore.kernel.org/r/01910ebdaba7d8d0cdc4ac60eb70da8e29cb85f1.1757251512.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
This controller's input and output logic is similar to previous
generations of SoCs. Additionally, it's capable of interrupt masking,
and could be configured to detect levels and edges, and is supplied with
a distinct reset signal.
The interrupt functionality is implemented through an irqchip, whose
operations are written with previous generation SoCs in mind and could
be reused. Since all Loongson SoCs with similar interrupt capability
(LS2K1500, LS2K2000) support byte-control mode, these operations are for
byte-control mode only for simplicity.
Signed-off-by: Yao Zi <ziyao@disroot.org>
Reviewed-by: Huacai Chen <chenhuacai@loongson.cn>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250904013438.2405-3-ziyao@disroot.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
Update help description with supported ICs from gpio-pca953x.c
Include missing IC names.
Signed-off-by: Akhilesh Patil <akhilesh@ee.iitb.ac.in>
Link: https://lore.kernel.org/r/aLmtOWjAWPtWe/gH@bhairav-test.ee.iitb.ac.in
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250903-gpio-mmio-gpio-conv-part3-v1-12-ff346509f408@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250903-gpio-mmio-gpio-conv-part3-v1-11-ff346509f408@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
For better readability and easier maintenance, order the includes
alphabetically.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250903-gpio-mmio-gpio-conv-part3-v1-10-ff346509f408@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
Increase build coverage by allowing the module to be built with
COMPILE_TEST=y.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250903-gpio-mmio-gpio-conv-part3-v1-9-ff346509f408@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250903-gpio-mmio-gpio-conv-part3-v1-8-ff346509f408@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250903-gpio-mmio-gpio-conv-part3-v1-7-ff346509f408@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
Increase build coverage by allowing the module to be built with
COMPILE_TEST=y. We need an actual prompt entry in this case so add it.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250903-gpio-mmio-gpio-conv-part3-v1-6-ff346509f408@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
For better readability and easier maintenance, order the includes
alphabetically.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250903-gpio-mmio-gpio-conv-part3-v1-5-ff346509f408@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250903-gpio-mmio-gpio-conv-part3-v1-4-ff346509f408@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250903-gpio-mmio-gpio-conv-part3-v1-3-ff346509f408@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250903-gpio-mmio-gpio-conv-part3-v1-2-ff346509f408@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
Increase build coverage by allowing the module to be built with
COMPILE_TEST=y.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250903-gpio-mmio-gpio-conv-part3-v1-1-ff346509f408@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into gpio/for-next
Linux 6.17-rc5
|
|
Remove legacy-of-mm-gpiochip.h header file. The above mentioned
file provides an OF API that's deprecated. There is no agnostic
alternatives to it and we have to open code the logic which was
hidden behind of_mm_gpiochip_add_data(). Note, most of the GPIO
drivers are using their own labeling schemas and resource retrieval
that only a few may gain of the code deduplication, so whenever
alternative is appear we can move drivers again to use that one.
[text copied from commit 34064c8267a6 ("powerpc/8xx:
Drop legacy-of-mm-gpiochip.h header")]
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/9652736ef05b94d9113ea5ce7899734ef82343d1.1755520794.git.christophe.leroy@csgroup.eu
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The 'desc' local variable in nmk_gpio_dbg_show_one() is now only used
with CONFIG_PINCTRL_NOMADIK enabled so wrap its declaration with an
appropriate ifdef.
Fixes: ddeb66d2cb10 ("gpio: nomadik: don't print out global GPIO numbers in debugfs callbacks")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202509032125.nXBcPuaf-lkp@intel.com/
Link: https://lore.kernel.org/r/20250903131903.95100-1-brgl@bgdev.pl
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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In order to further limit the number of references to the GPIO base
number stored in struct gpio_chip, replace the global GPIO numbers in
the output of debugfs callbacks by hardware offsets.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250826-gpio-dbg-show-base-v1-6-7f27cd7f2256@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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In order to further limit the number of references to the GPIO base
number stored in struct gpio_chip, replace the global GPIO numbers in
the output of debugfs callbacks by hardware offsets.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250826-gpio-dbg-show-base-v1-5-7f27cd7f2256@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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In order to further limit the number of references to the GPIO base
number stored in struct gpio_chip, replace the global GPIO numbers in
the output of debugfs callbacks by hardware offsets.
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250826-gpio-dbg-show-base-v1-4-7f27cd7f2256@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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In order to further limit the number of references to the GPIO base
number stored in struct gpio_chip, replace the global GPIO numbers in
the output of debugfs callbacks by hardware offsets.
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250826-gpio-dbg-show-base-v1-3-7f27cd7f2256@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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In order to further limit the number of references to the GPIO base
number stored in struct gpio_chip, replace the global GPIO numbers in
the output of debugfs callbacks by hardware offsets.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250826-gpio-dbg-show-base-v1-2-7f27cd7f2256@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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In order to further limit the number of references to the GPIO base
number stored in struct gpio_chip, replace the global GPIO numbers in
the output of debugfs callbacks by hardware offsets.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250826-gpio-dbg-show-base-v1-1-7f27cd7f2256@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250826-gpio-mmio-gpio-conv-part2-v1-12-f67603e4b27e@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250826-gpio-mmio-gpio-conv-part2-v1-11-f67603e4b27e@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250826-gpio-mmio-gpio-conv-part2-v1-10-f67603e4b27e@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250826-gpio-mmio-gpio-conv-part2-v1-9-f67603e4b27e@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250826-gpio-mmio-gpio-conv-part2-v1-8-f67603e4b27e@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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For easier maintenance: put includes in alphabetical order.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250826-gpio-mmio-gpio-conv-part2-v1-7-f67603e4b27e@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250826-gpio-mmio-gpio-conv-part2-v1-6-f67603e4b27e@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250826-gpio-mmio-gpio-conv-part2-v1-5-f67603e4b27e@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Simplify error handling and shrink the code by using dev_err_probe()
consistently across the driver.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250826-gpio-mmio-gpio-conv-part2-v1-4-f67603e4b27e@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250826-gpio-mmio-gpio-conv-part2-v1-3-f67603e4b27e@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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For easier maintenance: put includes in alphabetical order.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250826-gpio-mmio-gpio-conv-part2-v1-2-f67603e4b27e@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250826-gpio-mmio-gpio-conv-part2-v1-1-f67603e4b27e@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Commit a86240a37d43 ("gpiolib: enable CONFIG_GPIOLIB_LEGACY even for
!GPIOLIB") accidentally pulled all items from within the GPIOLIB submenu
into the main driver menu. Put them back under the top-level GPIO entry.
Suggested-by: Rob Herring <robh@kernel.org>
Fixes: a86240a37d43 ("gpiolib: enable CONFIG_GPIOLIB_LEGACY even for !GPIOLIB")
Reported-by: Rob Herring <robh@kernel.org>
Closes: https://lore.kernel.org/all/20250813222649.GA965895-robh@kernel.org/
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20250901125513.108691-1-brgl@bgdev.pl
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Same issue as G1619-04 in commit 805c74eac8cb ("gpiolib: acpi: Ignore
touchpad wakeup on GPD G1619-04"), Strix Point lineup uses 05.
Signed-off-by: Antheas Kapenekakis <lkml@antheas.dev>
Reviewed-by: Mika Westerberg <westeri@kernel.org>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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Extend the existing Tegra186 GPIO controller driver with support for the
GPIO controller found on Tegra256. While the programming model remains
the same, the number of pins has slightly changed.
Signed-off-by: Prathamesh Shete <pshete@nvidia.com>
Link: https://lore.kernel.org/r/20250823055420.24664-2-pshete@nvidia.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio fixes from Bartosz Golaszewski:
- fix an off-by-one bug in interrupt handling in gpio-timberdale
- update MAINTAINERS
* tag 'gpio-fixes-for-v6.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
MAINTAINERS: Change Altera-PIO driver maintainer
gpio: timberdale: fix off-by-one in IRQ type boundary check
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timbgpio_irq_type() currently accepts offset == ngpio, violating
gpiolib's [0..ngpio-1] contract. This can lead to undefined behavior
when computing '1 << offset', and it is also inconsistent with users
that iterate with for_each_set_bit(..., ngpio).
Tighten the upper bound to reject offset == ngpio. No functional change
for in-range offsets.
Signed-off-by: Junjie Cao <junjie.cao@intel.com>
Link: https://lore.kernel.org/r/20250825090850.127163-1-junjie.cao@intel.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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We're in the process of removing unneeded references to the global GPIO
base number treewide. Use the HW offset instead of the base number.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250815111733.79283-1-brgl@bgdev.pl
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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The IXP4xx expansion bus can have simple memory-mapped GPIO
on it. Using the proper device tree bindings, support probing
this directly from the device tree.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250822-ixp4xx-eb-mmio-gpio-v2-3-bd2edd4a9c74@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control fixes from Linus Walleij:
- Module macro parameter fix for the meson driver so that it actually
modprobes
- ACPI quirk for the ASUS ProArt PX13
- Build dependency for the STMFX driver
- Proper return value for the pinconf callbacks in the Airhoa driver
* tag 'pinctrl-v6.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
pinctrl: airoha: Fix return value in pinconf callbacks
pinctrl: STMFX: add missing HAS_IOMEM dependency
gpiolib: acpi: Add quirk for ASUS ProArt PX13
pinctrl: meson: Fix typo in device table macro
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Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250825-gpio-mmio-gpio-conv-v1-14-356b4b1d5110@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250825-gpio-mmio-gpio-conv-v1-13-356b4b1d5110@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250825-gpio-mmio-gpio-conv-v1-12-356b4b1d5110@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250825-gpio-mmio-gpio-conv-v1-11-356b4b1d5110@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250825-gpio-mmio-gpio-conv-v1-10-356b4b1d5110@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250825-gpio-mmio-gpio-conv-v1-9-356b4b1d5110@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250825-gpio-mmio-gpio-conv-v1-8-356b4b1d5110@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250825-gpio-mmio-gpio-conv-v1-7-356b4b1d5110@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Use dev_err_probe() where applicable.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250825-gpio-mmio-gpio-conv-v1-6-356b4b1d5110@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Avoid pulling in linux/of.h by using the generic device properties.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250825-gpio-mmio-gpio-conv-v1-5-356b4b1d5110@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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There's no corresponding call to platform_get_drvdata() or
dev_get_drvdata(). Remove the call to platform_set_drvdata() from
.probe().
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250825-gpio-mmio-gpio-conv-v1-4-356b4b1d5110@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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There's no reason for this driver to touch the gpio-mmio internals, we
have a dedicated flag passed to bgpio_init() indicating to the module
that the DIR register is unreadable.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250825-gpio-mmio-gpio-conv-v1-3-356b4b1d5110@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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When soc-button-array looks up the GPIO to use it calls acpi_find_gpio()
which will parse _CRS.
acpi_find_gpio.cold (drivers/gpio/gpiolib-acpi-core.c:953)
gpiod_find_and_request (drivers/gpio/gpiolib.c:4598 drivers/gpio/gpiolib.c:4625)
gpiod_get_index (drivers/gpio/gpiolib.c:4877)
The GPIO is setup basically, but the debounce information is discarded.
The platform will assert what debounce should be in _CRS, so program it
at the time it's available.
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Mario Limonciello (AMD) <superm1@kernel.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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The ASUS ProArt PX13 has a spurious wakeup event from the touchpad
a few moments after entering hardware sleep. This can be avoided
by preventing the touchpad from being a wake source.
Add to the wakeup ignore list.
Reported-by: Amit Chaudhari <amitchaudhari@mac.com>
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4482
Tested-by: Amit Chaudhari <amitchaudhari@mac.com>
Signed-off-by: Mario Limonciello (AMD) <superm1@kernel.org>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Link: https://lore.kernel.org/20250814183430.3887973-1-superm1@kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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When using MMIO with regmap, fast_io is implied. No need to set it
again.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20250813161517.4746-4-wsa+renesas@sang-engineering.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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The "> chip->ngpio" comparison here needs to be ">= chip->ngpio",
otherwise it leads to an out of bounds access. The fwd->valid_mask
bitmap only has chip->ngpio bits and the fwd->descs[] array has that
same number of elements. These values are set in
devm_gpiochip_fwd_alloc().
Fixes: c44ce91b8ada ("gpio: aggregator: refactor the code to add GPIO desc in the forwarder")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/aJwk0yBSCccGCjX3@stanley.mountain
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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The gpio-mlxbf3 driver interfaces with two GPIO controllers,
device instance 0 and 1. There is a single IRQ resource shared
between the two controllers, and it is found in the ACPI table for
device instance 0. The driver should not use platform_get_irq(),
otherwise this error is logged when probing instance 1:
mlxbf3_gpio MLNXBF33:01: error -ENXIO: IRQ index 0 not found
Cc: stable@vger.kernel.org
Fixes: cd33f216d241 ("gpio: mlxbf3: Add gpio driver support")
Signed-off-by: David Thompson <davthompson@nvidia.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/ce70b98a201ce82b9df9aa80ac7a5eeaa2268e52.1754928650.git.davthompson@nvidia.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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This reverts commit 10af0273a35ab4513ca1546644b8c853044da134.
While this change was merged, it is not the preferred solution.
During review of a similar change to the gpio-mlxbf2 driver, the
use of "platform_get_irq_optional" was identified as the preferred
solution, so let's use it for gpio-mlxbf3 driver as well.
Cc: stable@vger.kernel.org
Fixes: 10af0273a35a ("gpio: mlxbf3: only get IRQ for device instance 0")
Signed-off-by: David Thompson <davthompson@nvidia.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/8d2b630c71b3742f2c74242cf7d602706a6108e6.1754928650.git.davthompson@nvidia.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into gpio/for-next
Immutable branch for the pinctrl tree to pull from
Refactor the gpio-aggregator module as a prerequisite for merging the
pin controller driver for AAEON UP boards.
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Add a data pointer to store private data in the forwarder.
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Thomas Richard <thomas.richard@bootlin.com>
Link: https://lore.kernel.org/r/20250811-aaeon-up-board-pinctrl-support-v9-8-29f0cbbdfb30@bootlin.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Add request() callback to check if the GPIO descriptor was well registered
in the gpiochip_fwd before using it. This is done to handle the case where
GPIO descriptor is added at runtime in the forwarder.
If at least one GPIO descriptor was not added before the forwarder
registration, we assume the forwarder can sleep as if a GPIO is added at
runtime it may sleep.
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Thomas Richard <thomas.richard@bootlin.com>
Link: https://lore.kernel.org/r/20250811-aaeon-up-board-pinctrl-support-v9-7-29f0cbbdfb30@bootlin.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Export all symbols and create header file for the GPIO forwarder library.
It will be used in the next changes.
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Thomas Richard <thomas.richard@bootlin.com>
Link: https://lore.kernel.org/r/20250811-aaeon-up-board-pinctrl-support-v9-6-29f0cbbdfb30@bootlin.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Remove useless parameters of gpiochip_fwd_setup_delay_line().
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Thomas Richard <thomas.richard@bootlin.com>
Link: https://lore.kernel.org/r/20250811-aaeon-up-board-pinctrl-support-v9-5-29f0cbbdfb30@bootlin.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Add a new function gpiochip_fwd_register(), which finalizes the
initialization of the forwarder and registers the corresponding gpiochip.
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Thomas Richard <thomas.richard@bootlin.com>
Link: https://lore.kernel.org/r/20250811-aaeon-up-board-pinctrl-support-v9-4-29f0cbbdfb30@bootlin.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Create a dedicated function to add a GPIO desc in the forwarder. Instead of
saving a GPIO descs array pointer, now the GPIO descs are passed one by one
to the forwarder which registers them in its own array. So after the call
of gpiochip_fwd_create(), the passed array can be free.
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Thomas Richard <thomas.richard@bootlin.com>
Link: https://lore.kernel.org/r/20250811-aaeon-up-board-pinctrl-support-v9-3-29f0cbbdfb30@bootlin.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Move the GPIO forwarder allocation and static initialization in a dedicated
function.
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Thomas Richard <thomas.richard@bootlin.com>
Link: https://lore.kernel.org/r/20250811-aaeon-up-board-pinctrl-support-v9-2-29f0cbbdfb30@bootlin.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Add support to register for GPIO<->pin mapping using a list of non
consecutive pins. The core already supports sparse pin range (pins member
of struct pinctrl_gpio_range), but it was not possible to register one. If
pins is not NULL the core uses it, otherwise it assumes that a consecutive
pin range was registered and it uses pin_base.
The function gpiochip_add_pin_range() which allocates and fills the struct
pinctrl_gpio_range was renamed to gpiochip_add_pin_range_with_pins() and
the pins parameter was added.
Two new functions were added, gpiochip_add_pin_range() and
gpiochip_add_sparse_pin_range() to register a consecutive or sparse pins
range. Both use gpiochip_add_pin_range_with_pins().
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Thomas Richard <thomas.richard@bootlin.com>
Link: https://lore.kernel.org/r/20250811-aaeon-up-board-pinctrl-support-v9-1-29f0cbbdfb30@bootlin.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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The task is complete, but this was not reflected in the TODO file.
Fixes: d9d87d90cc0b10cd ("treewide: rename GPIO set callbacks back to their original names")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/417af7e5a110c527eb759289bd5d2fd6885f4e01.1754917104.git.geert+renesas@glider.be
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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When `devm_add_action_or_reset()` fails, it is due to a failed memory
allocation and will thus return `-ENOMEM`. `dev_err_probe()` doesn't do
anything when error is `-ENOMEM`. Therefore, remove the useless call to
`dev_err_probe()` when `devm_add_action_or_reset()` fails, and just
return the value instead.
Signed-off-by: Waqar Hameed <waqar.hameed@axis.com>
Link: https://lore.kernel.org/r/pndjz3im7te.a.out@axis.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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These changes just fix Linux Kernel Coding Style, no functional
improve.
-Macros with complex values should be enclosed in parentheses
Signed-off-by: Li Jun <lijun01@kylinos.cn>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20250731091637.595136-1-lijun01@kylinos.cn
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Add the necessary boilerplate to also make this driver modular.
Keep the subsys_initcall to not change registration order for built-in.
Also add OF match table for module autoloading.
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Link: https://lore.kernel.org/r/20250728060544.18169-1-alexander.stein@ew.tq-group.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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The conversion of all GPIO drivers to using the .set_rv() and
.set_multiple_rv() callbacks from struct gpio_chip (which - unlike their
predecessors - return an integer and allow the controller drivers to
indicate failures to users) is now complete and the legacy ones have
been removed. Rename the new callbacks back to their original names in
one sweeping change.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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With no more users of the legacy GPIO line value setters - .set() and
.set_multiple() - we can now remove them from the kernel.
Link: https://lore.kernel.org/r/20250725074651.14002-1-brgl@bgdev.pl
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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The gpio-mlxbf2 driver interfaces with four GPIO controllers,
device instances 0-3. There are two IRQ resources shared between
the four controllers, and they are found in the ACPI table for
instances 0 and 3. The driver should not use platform_get_irq(),
otherwise this error is logged when probing instances 1 and 2:
mlxbf2_gpio MLNXBF22:01: error -ENXIO: IRQ index 0 not found
Fixes: 2b725265cb08 ("gpio: mlxbf2: Introduce IRQ support")
Cc: stable@vger.kernel.org
Signed-off-by: David Thompson <davthompson@nvidia.com>
Reviewed-by: Shravan Kumar Ramani <shravankr@nvidia.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Link: https://lore.kernel.org/r/20250728144619.29894-1-davthompson@nvidia.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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This reverts commit 20117cf426b6 ("gpio: pxa: Make irq_chip immutableas")
as it caused a regression on samsung coreprimevelte and we've not been
able to fix it so far.
Cc: stable@vger.kernel.org # v6.16
Fixes: 20117cf426b6 ("gpio: pxa: Make irq_chip immutableas")
Reported-by: Duje Mihanović <duje@dujemihanovic.xyz>
Closes: https://lore.kernel.org/all/3367665.aeNJFYEL58@radijator/
Tested-by: Duje Mihanović <duje@dujemihanovic.xyz>
Link: https://lore.kernel.org/r/20250801071858.7554-1-brgl@bgdev.pl
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio updates from Bartosz Golaszewski:
"There's one new driver (Apple SMC) and extensions to existing drivers
for supporting new HW models. A lot of different impovements across
drivers and in core GPIO code. Details on that are in the signed tag
as usual.
We managed to remove some of the legacy APIs. Arnd Bergmann started to
work on making the legacy bits optional so that we may compile them
only for older platforms that still really need them.
Rob Herring has done a lot of work to convert legacy .txt dt-bindings
for GPIO controllers to YAML. There are only a few left now in the
GPIO tree.
A big part of the commits in this PR concern the conversion of GPIO
drivers to using the new line value setter callbacks. This conversion
is now complete treewide (unless I've missed something) and once all
the changes from different trees land in mainline, I'll send you
another PR containing a commit dropping the legacy callbacks from the
tree.
As the quest to pay back technical dept never really ends, we're
starting another set of interface conversions, this time it's about
moving fields specific to only a handful of drivers using the
gpio-mmio helper out of the core gpio_chip structure that every
controller implements and uses. This cycle we introduce a new set of
APIs and convert a few drivers under drivers/gpio/, next cycle we'll
convert remaining modules treewide (in gpio, pinctrl and mfd trees)
and finally remove the old interfaces and move the gpio-mmio fields
into their own structure wrapping gpio_chip.
One last change I should mention here is the rework of the sysfs
interface. In 2016, we introduced the GPIO character device as the
preferred alternative to the sysfs class under /sys/class/gpio. While
it has seen a wide adoption with the help of its user-space
counterpart - libgpiod - there are still users who prefer the
simplicity of sysfs.
As far as the GPIO subsystem is concerned, the problem is not the
existince of the GPIO class as such but rather the fact that it
exposes the global GPIO numbers to the user-space, stopping us from
ever being able to remove the numberspace from the kernel. To that
end, this release we introduced a parallel, limited sysfs interface
that doesn't expose these numbers and only implements a subset of
features that are relevant to the existing users. This is a result of
several discussions over the course of last year and should allow us
to remove the legacy part some time in the future.
Summary:
GPIOLIB core:
- introduce a parallel, limited sysfs user ABI that doesn't expose
the global GPIO numbers to user-space while maintaining backward
compatibility with the end goal of it completely replacing the
existing interface, allowing us to remove it
- remove the legacy devm_gpio_request() routine which has no more
users
- start the process of allowing to compile-out the legacy parts of
the GPIO core for users who don't need it by introducing a new
Kconfig option: GPIOLIB_LEGACY
- don't use global GPIO numbers in debugfs output from the core code
(drivers still do it, the work is ongoing)
- start the process of moving the fields specific to the gpio-mmio
helper out of the core struct gpio_chip into their own structure
that wraps it: create a new header with modern interfaces and
convert several drivers to using it
- remove the platform data structure associated with the gpio-mmio
helper from the kernel after having converted all remaining users
to generic device properties
- remove legacy struct gpio definition as it has no more users
New drivers:
- add the GPIO driver for the Apple System Management Controller
Driver improvements:
- add support for new models to gpio-adp5585, gpio-tps65219 and
gpio-pca953x
- extend the interrupt support in gpio-loongson-64bit
- allow to mark the simulated GPIO lines as invalid in gpio-sim
- convert all remaining GPIO drivers to using the new GPIO value
setter callbacks
- convert gpio-rcar to using simple device power management ops
callbacks
- don't check if current direction of a line is output before setting
the value in gpio-pisosr and ti-fpc202: the GPIO core already
handles that
- also drop unneeded GPIO range checks in drivers, the core already
makes sure we're within bounds when calling driver callbacks
- use dev_fwnode() where applicable across GPIO drivers
- set line value in gpio-zynqmp-modepin and gpio-twl6040 when the
user wants to change direction of the pin to output even though
these drivers don't need to do anything else to actually set the
direction, otherwise a call like gpiod_direction_output(d, 1) will
not result in the line driver high
- remove the reduntant call to pm_runtime_mark_last_busy() from
gpio-arizona
- use lock guards in gpio-cadence and gpio-mxc
- check the return values of regmap functions in gpio-wcd934x and
gpio-tps65912
- use better regmap interfaces in gpio-wcove and gpio-pca953x
- remove dummy GPIO chip callbacks from several drivers in cases
where the GPIO core can already handle their absence
- allow building gpio-palmas as a module
Fixes:
- use correct bit widths (according to the documentation) in
gpio-virtio
Device-tree bindings:
- convert several of the legacy .txt documents for many different
devices to YAML, improving automatic validation
- create a "trivial" GPIO DT schema that covers a wide range of
simple hardware that share a set of basic GPIO properties
- document new HW: Apple MAC SMC GPIO block and adp5589 I/O expander
- document a new model for pca95xx
- add and/or remove properties in YAML documents for gpio-rockchip,
fsl,qoriq-gpio, arm,pl061 and gpio-xilinx
Misc:
- some minor refactoring in several places, adding/removing forward
declarations, moving defines to better places, constify the
arguments in some functions, remove duplicate includes, etc.
- documentation updates"
* tag 'gpio-updates-for-v6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (202 commits)
MIPS: alchemy: gpio: use new GPIO line value setter callbacks for the remaining chips
gpiolib: enable CONFIG_GPIOLIB_LEGACY even for !GPIOLIB
gpio: virtio: Fix config space reading.
gpiolib: make legacy interfaces optional
dt-bindings: gpio: rockchip: Allow use of a power-domain
gpiolib: of: add forward declaration for struct device_node
power: reset: macsmc-reboot: Add driver for rebooting via Apple SMC
gpio: Add new gpio-macsmc driver for Apple Macs
mfd: Add Apple Silicon System Management Controller
soc: apple: rtkit: Make shmem_destroy optional
dt-bindings: mfd: Add Apple Mac System Management Controller
dt-bindings: power: reboot: Add Apple Mac SMC Reboot Controller
dt-bindings: gpio: Add Apple Mac SMC GPIO block
gpio: cadence: Remove duplicated include in gpio-cadence.c
gpio: tps65219: Add support for TI TPS65214 PMIC
gpio: tps65219: Update _IDX & _OFFSET macro prefix
gpio: sysfs: Fix an end of loop test in gpiod_unexport()
dt-bindings: gpio: Convert qca,ar7100-gpio to DT schema
dt-bindings: gpio: Convert maxim,max3191x to DT schema
dt-bindings: gpio: fsl,qoriq-gpio: Add missing mpc8xxx compatibles
...
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A few drivers that use the legacy GPIOLIB interfaces can be enabled
even when GPIOLIB is disabled entirely. With my previous patch this
now causes build failures like:
drivers/nfc/s3fwrn5/uart.c: In function 's3fwrn82_uart_parse_dt':
drivers/nfc/s3fwrn5/uart.c:100:14: error: implicit declaration of function 'gpio_is_valid'; did you mean 'uuid_is_valid'? [-Werror=implicit-function-declaration]
These did not show up in my randconfig tests because randconfig almost
always has GPIOLIB selected by some other driver, and I did most
of the testing with follow-up patches that address the failures
properly.
Move the symbol outside of the 'if CONFIG_GPIOLIB' block for the moment
to avoid the build failures. It can be moved back and turned off by
default once all the driver specific changes are merged.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202507261934.yIHeUuEQ-lkp@intel.com/
Fixes: 678bae2eaa81 ("gpiolib: make legacy interfaces optional")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20250726211053.2226857-1-arnd@kernel.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Quote from the virtio specification chapter 4.2.2.2:
"For the device-specific configuration space, the driver MUST use 8 bit
wide accesses for 8 bit wide fields, 16 bit wide and aligned accesses
for 16 bit wide fields and 32 bit wide and aligned accesses for 32 and
64 bit wide fields."
Signed-off-by: Harald Mommer <harald.mommer@oss.qualcomm.com>
Cc: stable@vger.kernel.org
Fixes: 3a29355a22c0 ("gpio: Add virtio-gpio driver")
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Link: https://lore.kernel.org/r/20250724143718.5442-2-harald.mommer@oss.qualcomm.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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The traditional interfaces are only used on a small number of ancient
boards. Make these optional now so they can be disabled by default.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Link: https://lore.kernel.org/r/20250722153634.3683927-1-arnd@kernel.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd into gpio/for-next
Immutable branch between MFD, GPIO, Power and SoC due for the v6.17 merge window
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Commit 08a149c40bdb ("gpiolib: Clean up headers") added a forward
declaration for struct device.
Later, commit 07445ae1c263 ("gpiolib: of: change of_find_gpio() to
accept device node") changed the function signature to accept a struct
device_node instead of a struct device.
Replace forward declaration of struct device with struct device_node to
match the updated function signature.
Signed-off-by: Andrei Lalaev <andrey.lalaev@gmail.com>
Link: https://lore.kernel.org/r/20250721155737.261990-1-andrey.lalaev@gmail.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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This driver implements the GPIO service on top of the SMC framework
on Apple Mac machines. In particular, these are the GPIOs present in the
PMU IC which are used to control power to certain on-board devices.
Although the underlying hardware supports various pin config settings
(input/output, open drain, etc.), this driver does not implement that
functionality and leaves it up to the firmware to configure things
properly. We also don't yet support interrupts/events. This is
sufficient for device power control, which is the only thing we need to
support at this point. More features will be implemented when needed.
To our knowledge, only Apple Silicon Macs implement this SMC feature.
Signed-off-by: Hector Martin <marcan@marcan.st>
Reviewed-by: Bartosz Golaszewski <brgl@bgdev.pl>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Sven Peter <sven@kernel.org>
Signed-off-by: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Reviewed-by: Neal Gompa <neal@gompa.dev>
Signed-off-by: Sven Peter <sven@kernel.org>
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Link: https://lore.kernel.org/r/20250610-smc-6-15-v7-6-556cafd771d3@kernel.org
Signed-off-by: Lee Jones <lee@kernel.org>
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The header files linux/gpio/driver.h is included twice in gpio-cadence.c,
so one inclusion of each can be removed.
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=22931
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Link: https://lore.kernel.org/r/20250723064608.2178024-1-yang.lee@linux.alibaba.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Add support for the TI TPS65214 PMIC with the addition of an id_table,
separate TPS65214 template_chip, and device-specific _change_direction
functions.
- Use platform_get_device_id() to assign dev-specific information.
- Use different change_direction() functions since TPS65214's GPIO
configuration bits are changeable during device operation through bit
GPIO_CONFIG in GENERAL_CONFIG register.
- Remove MODULE_ALIAS since it is now generated by MODULE_DEVICE_TABLE.
Reviewed-by: Jonathan Cormier <jcormier@criticallink.com>
Tested-by: Jonathan Cormier <jcormier@criticallink.com>
Signed-off-by: Shree Ramamoorthy <s-ramamoorthy@ti.com>
Link: https://lore.kernel.org/r/20250722181609.1541739-3-s-ramamoorthy@ti.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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TPS65215 and TPS65219 are overlapping PMIC devices. While their regulator
features differe, the GPIO features are the same. In the TPS65219 MFD
driver, the 2 PMICs share the same "tps65219-gpio" compatible string to
limit support for TPS65215 in this GPIO driver to comments.
The TPS6521X_GPIO0_IDX and TPS6521X_GPIO0_OFFSET macro name prefixes are
updated to indicate these macros apply to both PMICs.
Reviewed-by: Roger Quadros <rogerq@kernel.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Jonathan Cormier <jcormier@criticallink.com>
Signed-off-by: Shree Ramamoorthy <s-ramamoorthy@ti.com>
Link: https://lore.kernel.org/r/20250722181609.1541739-2-s-ramamoorthy@ti.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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The test for "if (!desc_data)" does not work correctly because the list
iterator in a list_for_each_entry() loop is always non-NULL. If we don't
exit via a break, then it points to invalid memory. Instead, use a tmp
variable for the list iterator and only set the "desc_data" when we have
found a match.
Fixes: 1cd53df733c2 ("gpio: sysfs: don't look up exported lines as class devices")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/747545bf-05f0-4f89-ba77-cb96bf9041f1@sabinyo.mountain
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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The patch converting the driver to using new GPIO line value setters
only converted the set() callback and missed set_multiple(). Fix it now.
Fixes: 1919ea19a4ff ("gpio: xilinx: use new GPIO line value setter callbacks")
Acked-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/20250717131116.53878-1-brgl@bgdev.pl
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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devm_gpiod_put_array() is meant to undo the effects of
devm_gpiod_get_array() - in particular, it should release the GPIOs
contained in the array acquired with the latter. It is meant to be the
resource-managed version of gpiod_put_array(), and it should behave
similar to the non-array version devm_gpiod_put().
Since commit d1d52c6622a6 ("gpiolib: devres: Finish the conversion to
use devm_add_action()") it doesn't do that anymore, it just removes the
devres action and frees associated memory, but it doesn't actually
release the GPIOs.
Fix by switching from devm_remove_action() to devm_release_action(),
which will in addition invoke the action to release the GPIOs.
Fixes: d1d52c6622a6 ("gpiolib: devres: Finish the conversion to use devm_add_action()")
Signed-off-by: André Draszik <andre.draszik@linaro.org>
Reported-by: Wattson CI <wattson-external@google.com>
Reported-by: Samuel Wu <wusamuel@google.com>
Link: https://lore.kernel.org/r/20250715-gpiolib-devres-put-array-fix-v1-1-970d82a8c887@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Add the interrupt enable register offset (inten_offset) so that GPIO
interrupts can be enabled normally on more models.
According to the latest interface specifications, the definition of GPIO
interrupts in ACPI is similar to that in FDT. The GPIO interrupts are
listed one by one according to the GPIO number, and the corresponding
interrupt number can be obtained directly through the GPIO number
specified by the consumer.
Signed-off-by: Xi Ruoyao <xry111@xry111.site>
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Reviewed-by: Huacai Chen <chenhuacai@loongson.cn>
Link: https://lore.kernel.org/r/20250714064542.2276247-1-zhoubinbin@loongson.cn
[Bartosz: tweaked the commit message]
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Unlock before returning if vprbrd_gpiob_setdir() fails.
Fixes: 55e2d1eec110 ("gpio: viperboard: use new GPIO line value setter callbacks")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/9e72018c-e46e-4e55-83e4-503da4d022fc@sabinyo.mountain
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Remove the completed task tracking the rework of the sysfs interface and
add a new task to track the removal of the legacy bits and pieces.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250704-gpio-sysfs-chip-export-v4-10-9289d8758243@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Add a Kconfig switch allowing to disable the legacy parts of the GPIO
sysfs interface. This means that even though we keep the
/sys/class/gpio/ directory, it no longer contains the global
export/unexport attribute pair (instead, the user should use the
per-chip export/unpexport) nor the gpiochip$BASE entries. This option
default to y if GPIO sysfs is enabled but we'll default it to n at some
point in the future.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250704-gpio-sysfs-chip-export-v4-9-9289d8758243@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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As a way to allow the user-space to stop referring to GPIOs by their
global numbers, introduce a parallel group of line attributes for
exported GPIO that live inside the GPIO chip class device and are
referred to by their HW offset within their parent chip.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250704-gpio-sysfs-chip-export-v4-8-9289d8758243@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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In preparation for adding a parallel, per-chip attribute group for
exported GPIO lines, stop using class device APIs to refer to it in the
code. When unregistering the chip, don't call class_find_device() but
instead store exported lines in a linked list inside the GPIO chip data
object and look it up there.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250704-gpio-sysfs-chip-export-v4-7-9289d8758243@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Currently each exported GPIO is represented in sysfs as a separate class
device. This allows us to simply use dev_get_drvdata() to retrieve the
pointer passed to device_create_with_groups() from sysfs ops callbacks.
However, we're preparing to add a parallel set of per-line sysfs
attributes that will live inside the associated gpiochip group. They are
not registered as class devices and so have the parent device passed as
argument to their callbacks (the GPIO chip class device).
Put the attribute structs inside the GPIO descriptor data and
dereference the relevant ones using container_of() in the callbacks.
This way, we'll be able to reuse the same code for both the legacy and
new GPIO attributes.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250704-gpio-sysfs-chip-export-v4-6-9289d8758243@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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In preparation for future commits which will make use of descriptor AND
GPIO-device data in the same functions rename the former from data to
desc_data separately which will make future changes smaller and easier
to read.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250704-gpio-sysfs-chip-export-v4-5-9289d8758243@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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We don't use any fields from struct device in gpio_sysfs_request_irq(),
gpio_sysfs_free_irq() and gpio_sysfs_set_active_low(). We only use the
dev argument to get the associated struct gpiod_data pointer with
dev_get_drvdata().
To make the transition to not using dev_get_drvdata() across line
callbacks for sysfs attributes easier, pass gpiod_data directly to
these functions instead of having it wrapped in struct device.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250704-gpio-sysfs-chip-export-v4-4-9289d8758243@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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There's no reason to retrieve the reference to the sysfs dirent every
time we request an interrupt, we can as well only do it once when
exporting the GPIO.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250704-gpio-sysfs-chip-export-v4-3-9289d8758243@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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In order to enable moving away from the global GPIO numberspace-based
exporting of lines over sysfs: add a parallel, per-chip entry under
/sys/class/gpio/ for every registered GPIO chip, denoted by device ID
in the file name and not its base GPIO number.
Compared to the existing chip group: it does not contain the "base"
attribute as the goal of this change is to not refer to GPIOs by their
global number from user-space anymore. It also contains its own,
per-chip export/unexport attribute pair which allow to export lines by
their hardware offset within the chip.
Caveat #1: the new device cannot be a link to (or be linked to by) the
existing "gpiochip<BASE>" entry as we cannot create links in
/sys/class/xyz/.
Caveat #2: the new entry cannot be named "gpiochipX" as it could
conflict with devices whose base is statically defined to a low number.
Let's go with "chipX" instead.
While at it: the chip label is unique so update the untrue statement
when extending the docs.
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250704-gpio-sysfs-chip-export-v4-2-9289d8758243@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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We have a dedicated comparator for GPIO descriptors that performs
additional checks and hides the implementation detail of whether the
same GPIO can be associated with two separate struct gpio_desc objects.
Use it in sysfs code
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250704-gpio-sysfs-chip-export-v4-1-9289d8758243@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Link: https://lore.kernel.org/r/20250715-gpiochip-set-rv-gpio-remaining-v2-2-072b4cf06330@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Replace the if-else with a direct call to the regmap_assign_bits()
helper and save a couple lines of code.
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20250715-gpiochip-set-rv-gpio-remaining-v2-1-072b4cf06330@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Using regmap_update_bits() allows to reduce the number of I2C transfers
when updating bits that haven't changed on non-volatile registers.
For example on a PCAL6416, when changing a GPIO direction from input to
output, the number of I2C transfers can be reduced from 4 to just 1 if
the pull resistors configuration hasn't changed and the output value
is the same as before.
Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Link: https://lore.kernel.org/r/20250714133730.6353-1-hugo@hugovil.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-gpio-intel into gpio/for-current
intel-gpio for v6.16-2
* Add a quirk for Acer Nitro V15 against wakeup capability
The following is an automated git shortlog grouped by driver:
gpiolib:
- acpi: Add a quirk for Acer Nitro V15
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It's ok to not do anything specific when setting direction but the
callback should still respect the line value the user requests.
Link: https://lore.kernel.org/r/20250709-gpiochip-set-rv-gpio-remaining-v1-19-b8950f69618d@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Link: https://lore.kernel.org/r/20250709-gpiochip-set-rv-gpio-remaining-v1-18-b8950f69618d@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Link: https://lore.kernel.org/r/20250709-gpiochip-set-rv-gpio-remaining-v1-17-b8950f69618d@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Link: https://lore.kernel.org/r/20250709-gpiochip-set-rv-gpio-remaining-v1-16-b8950f69618d@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Link: https://lore.kernel.org/r/20250709-gpiochip-set-rv-gpio-remaining-v1-15-b8950f69618d@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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GPIO core deals just fine with input-only controllers not implementing
the .set() callback. Remove the unneeded dummy implementation.
Link: https://lore.kernel.org/r/20250709-gpiochip-set-rv-gpio-remaining-v1-14-b8950f69618d@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Link: https://lore.kernel.org/r/20250709-gpiochip-set-rv-gpio-remaining-v1-13-b8950f69618d@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Link: https://lore.kernel.org/r/20250709-gpiochip-set-rv-gpio-remaining-v1-12-b8950f69618d@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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GPIO core already makes sure that offsets higher than the number of GPIOs
are never passed to controller callbacks. We can remove the unnecessary
check.
Link: https://lore.kernel.org/r/20250709-gpiochip-set-rv-gpio-remaining-v1-11-b8950f69618d@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Link: https://lore.kernel.org/r/20250709-gpiochip-set-rv-gpio-remaining-v1-10-b8950f69618d@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Link: https://lore.kernel.org/r/20250709-gpiochip-set-rv-gpio-remaining-v1-9-b8950f69618d@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20250709-gpiochip-set-rv-gpio-remaining-v1-8-b8950f69618d@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20250709-gpiochip-set-rv-gpio-remaining-v1-7-b8950f69618d@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20250709-gpiochip-set-rv-gpio-remaining-v1-6-b8950f69618d@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Link: https://lore.kernel.org/r/20250709-gpiochip-set-rv-gpio-remaining-v1-5-b8950f69618d@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Link: https://lore.kernel.org/r/20250709-gpiochip-set-rv-gpio-remaining-v1-3-b8950f69618d@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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regmap_update_bits() can fail so check its return value in
wcd_gpio_direction_output() for consistency with the rest of the code
and propagate any errors.
Link: https://lore.kernel.org/r/20250709-gpiochip-set-rv-gpio-remaining-v1-2-b8950f69618d@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Link: https://lore.kernel.org/r/20250709-gpiochip-set-rv-gpio-remaining-v1-1-b8950f69618d@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Link: https://lore.kernel.org/r/20250707-gpiochip-set-rv-gpio-round4-v1-12-35668aaaf6d2@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Link: https://lore.kernel.org/r/20250707-gpiochip-set-rv-gpio-round4-v1-11-35668aaaf6d2@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Acked-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Link: https://lore.kernel.org/r/20250707-gpiochip-set-rv-gpio-round4-v1-10-35668aaaf6d2@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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It's ok for a GPIO controller to be output-only but the .direction_out()
callback must also set the requested line value.
Link: https://lore.kernel.org/r/20250707-gpiochip-set-rv-gpio-round4-v1-9-35668aaaf6d2@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Link: https://lore.kernel.org/r/20250707-gpiochip-set-rv-gpio-round4-v1-8-35668aaaf6d2@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Link: https://lore.kernel.org/r/20250707-gpiochip-set-rv-gpio-round4-v1-7-35668aaaf6d2@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Link: https://lore.kernel.org/r/20250707-gpiochip-set-rv-gpio-round4-v1-6-35668aaaf6d2@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Acked-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
Link: https://lore.kernel.org/r/20250707-gpiochip-set-rv-gpio-round4-v1-5-35668aaaf6d2@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Link: https://lore.kernel.org/r/20250707-gpiochip-set-rv-gpio-round4-v1-4-35668aaaf6d2@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Link: https://lore.kernel.org/r/20250707-gpiochip-set-rv-gpio-round4-v1-3-35668aaaf6d2@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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regmap_update_bits() can fail, check its return value like we do
elsewhere in the driver.
Link: https://lore.kernel.org/r/20250707-gpiochip-set-rv-gpio-round4-v1-2-35668aaaf6d2@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Link: https://lore.kernel.org/r/20250707-gpiochip-set-rv-gpio-round4-v1-1-35668aaaf6d2@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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One of the users of global GPIO numbers in the kernel are the debugfs
callbacks in GPIO drivers. Before converting any custom .dbg_show()
callbacks in individual modules, let's first make GPIO core stop using
GPIO base in debugfs output. Use hardware offsets instead.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250707141313.73169-1-brgl@bgdev.pl
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Convert the Renesas R-Car GPIO driver from SIMPLE_DEV_PM_OPS() to
DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr(). This lets us drop the
check for CONFIG_PM_SLEEP, and reduces kernel size in case CONFIG_PM or
CONFIG_PM_SLEEP is disabled, while increasing build coverage.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Link: https://lore.kernel.org/r/e201140426daacaa799d73e2f76bfd96b6f5718f.1752086619.git.geert+renesas@glider.be
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Add a new line-level, boolean property to the gpio-sim configfs
interface called 'valid'. It's set by default and the user can unset it
to make the line be included in the standard `gpio-reserved-ranges`
property when the chip is registered with GPIO core. This allows users
to specify which lines should not be available for requesting as GPIOs.
Link: https://lore.kernel.org/r/20250630130358.40352-1-brgl@bgdev.pl
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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of_flags is passed down to GPIO chip's xlate function, so ensure this one
is properly initialized as - if the xlate callback does nothing with it
- we may end up with various configuration errors like:
gpio-720 (enable): multiple pull-up, pull-down or pull-disable enabled, invalid configuration
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Link: https://lore.kernel.org/r/20250708083829.658051-1-alexander.stein@ew.tq-group.com
[Bartosz: tweaked the commit message]
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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The TI TCA6418 is a 18-channel I2C I/O expander. It is slightly
different to other models from the same family, such as TCA6416,
but has enough in common with them to make it work with just a
few tweaks, which are explained in the code's documentation.
Signed-off-by: Maria Garcia <mariagarcia7293@gmail.com>
Link: https://lore.kernel.org/r/20250703205740.45385-3-mariagarcia7293@gmail.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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pm_runtime_put_autosuspend(), pm_runtime_put_sync_autosuspend(),
pm_runtime_autosuspend() and pm_request_autosuspend() now include a call
to pm_runtime_mark_last_busy(). Remove the now-reduntant explicit call to
pm_runtime_mark_last_busy().
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Link: https://lore.kernel.org/r/20250704075408.3217690-1-sakari.ailus@linux.intel.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Link: https://lore.kernel.org/r/20250702-gpiochip-set-rv-gpio-round3-v1-12-0d23be74f71d@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Link: https://lore.kernel.org/r/20250702-gpiochip-set-rv-gpio-round3-v1-11-0d23be74f71d@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
|
struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Link: https://lore.kernel.org/r/20250702-gpiochip-set-rv-gpio-round3-v1-10-0d23be74f71d@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
