Commit Graph

5201 Commits

Author SHA1 Message Date
Kent Gibson
cfa53463ac gpiolib: cdev: replace if-else chains with switches
Improve readability by replacing if-else chains with switch
statements.

Signed-off-by: Kent Gibson <warthog618@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-07-19 10:01:25 +02:00
Kent Gibson
2487a81223 gpiolib: cdev: simplify parameter in call to hte_edge_setup
Improve readability by using the GPIO_V2_LINE_FLAG_EDGE_BOTH instead
of combining the rising and falling edge flags.

Signed-off-by: Kent Gibson <warthog618@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Dipen Patel <dipenp@nvidia.com>
Tested-by: Dipen Patel <dipenp@nvidia.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-07-19 10:01:25 +02:00
Kent Gibson
160d6e4029 gpiolib: cdev: simplify linereq_free
The edge detector is only ever started after the line desc has been
determined, so move edge_detector_stop() inside the line desc check,
and merge the two checked regions into one.

Signed-off-by: Kent Gibson <warthog618@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Dipen Patel <dipenp@nvidia.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-07-19 10:01:22 +02:00
Aakash Sen Sharma
3e2d53b273 gpio: 104-idi-48: unsigned to unsigned int cleanup
Remove checkpatch warnings. No functional changes.

Signed-off-by: Aakash Sen Sharma <aakashsensharma@gmail.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-07-19 09:57:41 +02:00
Geert Uytterhoeven
b06d7b458a gpio: GPIO_SAMA5D2_PIOBU should depend on ARCH_AT91
The SAMA5D2 PIOBU is only present on some AT91/Microchip SoCs.  Hence
add a dependency on ARCH_AT91, to prevent asking the user about this
driver when configuring a kernel without AT91/Microchip SoC support.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-07-19 09:57:41 +02:00
Liang He
5d07a692f9 gpio: gpiolib-of: Fix refcount bugs in of_mm_gpiochip_add_data()
We should use of_node_get() when a new reference of device_node
is created. It is noted that the old reference stored in
'mm_gc->gc.of_node' should also be decreased.

This patch is based on the fact that there is a call site in function
'qe_add_gpiochips()' of src file 'drivers\soc\fsl\qe\gpio.c'. In this
function, of_mm_gpiochip_add_data() is contained in an iteration of
for_each_compatible_node() which will automatically increase and
decrease the refcount. So we need additional of_node_get() for the
reference escape in of_mm_gpiochip_add_data().

Fixes: a19e3da5bc ("of/gpio: Kill of_gpio_chip and add members directly to gpio_chip")
Signed-off-by: Liang He <windhl@126.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-07-19 09:57:41 +02:00
Shinyzenith
13e024b66c gpio: lp3943: unsigned to unsigned int cleanup
Getting rid of checkpatch findings. No functional changes.

Signed-off-by: Shinyzenith <aakashsensharma@gmail.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-07-19 09:57:40 +02:00
Bartosz Golaszewski
90ce2f01e7 intel-gpio for v5.20-1
* Clean up the GPIO driver of Intel EG20 PCH
 
 The following is an automated git shortlog grouped by driver:
 
 pch:
  -  Change PCI device macros
  -  Use dev_err_probe()
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Merge tag 'intel-gpio-v5.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-gpio-intel into TEST_MERGE

intel-gpio for v5.20-1

* Clean up the GPIO driver of Intel EG20 PCH

The following is an automated git shortlog grouped by driver:

pch:
 -  Change PCI device macros
 -  Use dev_err_probe()
2022-07-19 09:57:25 +02:00
Andy Shevchenko
597a8a888d gpiolib: of: Use device_match_of_node() helper
Instead of open coding, use device_match_of_node() helper.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-07-19 09:57:13 +02:00
Andy Shevchenko
6169d76c56 gpio: adp5588: sort header inclusion alphabetically
Sort header inclusion alphabetically.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-07-19 09:57:13 +02:00
Andy Shevchenko
669f5618fe gpio: adp5588: Do not use defined value for driver name and compatible
It's wrong to use defined string literal for three semantically different
cases, i.e.:
1) compatible string, which is part of ABI and has to have specific format;
2) I2C ID, which is user space visible and also ABI;
3) driver name, that can be changed.

Drop the define and use appropriate string literals in place.

While at it, drop comma at terminator entry of OF ID table.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-07-19 09:57:13 +02:00
Andy Shevchenko
4a40ccccb6 gpio: adp5588: Switch from of headers to mod_devicetable.h
There is nothing directly using of specific interfaces in this driver,
so lets not include the headers.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-07-19 09:57:13 +02:00
Jianqun Xu
cc165ba48a gpio: rockchip: add support for rk3588
Add V2.1 rockchip gpio controller type, which is part of the
RK3588 SoC.

Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
2022-07-19 09:57:13 +02:00
Andy Shevchenko
8773bacefc gpio: adnp: Make use of device properties
Convert the module to be property provider agnostic and allow
it to be used on non-OF platforms.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-07-19 09:57:13 +02:00
Andy Shevchenko
a2a15e1263 gpio: adnp: use simple i2c probe function
The i2c probe functions here don't use the id information provided in
their second argument, so the single-parameter i2c probe function
("probe_new") can be used instead.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-07-19 09:57:13 +02:00
Lucas Stach
d274f02eb9 gpio: pca9570: add pca9571 support
The PCA9571 very similar to the PCA9570, it only differs in the
number of GPIOs.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-07-19 09:57:13 +02:00
Uwe Kleine-König
3d57fa2a22 gpio: xgs-iproc: Drop if with an always false condition
The remove callback is only called after probe completed successfully.
In this case platform_set_drvdata() was called with a non-NULL argument
and so chip is never NULL.

Also note that returning an error code from a remove callback doesn't
result in the device staying bound. It's still removed and devm
callbacks are called.

This is a preparation for making platform remove callbacks return void.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-07-19 09:57:13 +02:00
Uwe Kleine-König
1923433cd6 gpio: brcmstb: Make .remove() obviously always return 0
priv cannot be NULL because brcmstb_gpio_probe() calls
platform_set_drvdata() with a non-NULL argument, so the check for !priv can
be dropped.

Also remove the variable ret that is only used to hide a bit that in the
end zero is returned.

This is a preparation for making platform remove callbacks return void.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-07-19 09:56:51 +02:00
Uwe Kleine-König
7e55b33d3f gpio: ucb1400: Remove platform setup and teardown support
There is no user of these callbacks. The motivation for this change is
to stop returning an error code from the remove callback.

This is a preparation for making platform remove callbacks return void.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-07-19 09:56:51 +02:00
Uwe Kleine-König
421e3c16c3 gpio: twl4030: Don't return an error after WARN in .remove
Returning a non-zero value in a platform driver's remove callback only
results in an error message ("remove callback returned a non-zero value.
This will be ignored.", see platform_remove()), and then the device is
removed anyhow.

As there was just a WARN_ON triggered, return 0 to drop the follow up
warning. The latter output is hardly relevant after the big WARN splat.

This is a preparation for making platform remove callbacks return void.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-07-19 09:56:51 +02:00
Uwe Kleine-König
2a1192ff08 gpio: twl4030: Drop platform teardown callback
There is no machine providing a teardown callback, so drop the unused
code.

This is a preparation for making platform remove callbacks return void.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-07-19 09:56:51 +02:00
Devarsh Thakkar
0651a73092 gpio: davinci: Add support for system suspend/resume PM
Add support for system suspend/resume PM hooks, save the
register context of all the required gpio registers on suspend
and restore context on the resume.

Signed-off-by: Devarsh Thakkar <devarsht@ti.com>
Signed-off-by: Aswath Govindraju <a-govindraju@ti.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-07-19 09:56:51 +02:00
Andy Shevchenko
2b038e786f gpiolib: devres: Get rid of unused devm_gpio_free()
The last user, which in fact was a dead code, has gone a year ago,
previous one 3 years ago. On top of that we want to drop away the
legacy GPIO APIs in the kernel, so take a chance to get rid of
unused devm_gpio_free() and accompanying stuff.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-07-19 09:56:34 +02:00
Bartosz Golaszewski
7329b07172 gpio: sim: fix the chip_name configfs item
The chip_name configs attribute always displays the device name of the
first GPIO bank because the logic of the relevant function is simply
wrong.

Fix it by correctly comparing the bank's swnode against the GPIO
device's children.

Fixes: cb8c474e79 ("gpio: sim: new testing module")
Cc: stable@vger.kernel.org
Reported-by: Kent Gibson <warthog618@gmail.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Kent Gibson <warthog618@gmail.com>
Tested-by: Kent Gibson <warthog618@gmail.com>
2022-07-12 13:41:25 +02:00
Kent Gibson
c8e27a4a51 gpiolib: cdev: fix null pointer dereference in linereq_free()
Fix a kernel NULL pointer dereference reported by gpio kselftests.

linereq_free() can be called as part of the cleanup of a failed request,
at which time the desc for a line may not have been determined, so it
is unsafe to dereference without a check.

Add a check prior to dereferencing the line desc.

Fixes: 2068339a6c ("gpiolib: cdev: Add hardware timestamp clock type")
Signed-off-by: Kent Gibson <warthog618@gmail.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-07-07 12:18:18 +02:00
Leon Romanovsky
8af3a0b238 gpio: vf610: fix compilation error
Fix compilation error by explicitly adding the missing include.

drivers/gpio/gpio-vf610.c: In function ‘vf610_gpio_direction_input’:
drivers/gpio/gpio-vf610.c:120:9: error: implicit declaration of function ‘pinctrl_gpio_direction_input’; did you mean ‘vf610_gpio_direction_input’? [-Werror=implicit-function-declaration]
  120 |  return pinctrl_gpio_direction_input(chip->base + gpio);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |         vf610_gpio_direction_input

Fixes: 30a35c07d9 ("gpio: vf610: drop the SOC_VF610 dependency for GPIO_VF610")
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-07-05 15:58:59 +02:00
Linus Torvalds
8c23f235a6 gpio fixes for v5.19-rc4
- make the irqchip immutable in gpio-realtek-otto
 - fix error code propagation in gpio-winbond
 - fix device removing in gpio-grgpio
 - fix a typo in gpio-mxs which indicates the driver is for a different model
 - documentation fixes
 - MAINTAINERS file updates
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Merge tag 'gpio-fixes-for-v5.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio fixes from Bartosz Golaszewski:

 - make the irqchip immutable in gpio-realtek-otto

 - fix error code propagation in gpio-winbond

 - fix device removing in gpio-grgpio

 - fix a typo in gpio-mxs which indicates the driver is for a different
   model

 - documentation fixes

 - MAINTAINERS file updates

* tag 'gpio-fixes-for-v5.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
  gpio: mxs: Fix header comment
  gpio: Fix kernel-doc comments to nested union
  gpio: grgpio: Fix device removing
  gpio: winbond: Fix error code in winbond_gpio_get()
  gpio: realtek-otto: Make the irqchip immutable
  docs: driver-api: gpio: Fix filename mismatch
  MAINTAINERS: add include/dt-bindings/gpio to GPIO SUBSYSTEM
2022-06-24 17:01:31 -07:00
Stefan Wahren
b0d473185b gpio: mxs: Fix header comment
This driver is about MXS GPIO support. MXC is a different platform.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-06-23 23:18:13 +02:00
Uwe Kleine-König
c1c2a15c2b gpio: grgpio: Fix device removing
If a platform device's remove callback returns non-zero, the device core
emits a warning and still removes the device and calls the devm cleanup
callbacks.

So it's not save to not unregister the gpiochip because on the next request
to a GPIO the driver accesses kfree()'d memory. Also if an IRQ triggers,
the freed memory is accessed.

Instead rely on the GPIO framework to ensure that after gpiochip_remove()
all GPIOs are freed and so the corresponding IRQs are unmapped.

This is a preparation for making platform remove callbacks return void.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-06-23 16:42:27 +02:00
Dan Carpenter
9ca766eaea gpio: winbond: Fix error code in winbond_gpio_get()
This error path returns 1, but it should instead propagate the negative
error code from winbond_sio_enter().

Fixes: a0d6500941 ("gpio: winbond: Add driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-06-23 16:29:55 +02:00
Andy Shevchenko
b65bb2c148 gpio: pch: Change PCI device macros
Use PCI_DEVICE_DATA macro. No functional changes are expected.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2022-06-21 18:01:11 +03:00
Andy Shevchenko
d3bb436deb gpio: pch: Use dev_err_probe()
Simplify the error path in ->probe() a bit by using dev_err_probe().

While at it, correct the messages since the called function were changed
in the past.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2022-06-21 18:01:10 +03:00
huhai
c81aba8fde MIPS: Remove repetitive increase irq_err_count
commit 979934da9e ("[PATCH] mips: update IRQ handling for vr41xx") added
a function irq_dispatch, and it'll increase irq_err_count when the get_irq
callback returns a negative value, but increase irq_err_count in get_irq
was not removed.

And also, modpost complains once gpio-vr41xx drivers become modules.
  ERROR: modpost: "irq_err_count" [drivers/gpio/gpio-vr41xx.ko] undefined!

So it would be a good idea to remove repetitive increase irq_err_count in
get_irq callback.

Fixes: 27fdd325da ("MIPS: Update VR41xx GPIO driver to use gpiolib")
Fixes: 979934da9e ("[PATCH] mips: update IRQ handling for vr41xx")
Reported-by: k2ci <kernel-bot@kylinos.cn>
Signed-off-by: huhai <huhai@kylinos.cn>
Signed-off-by: Genjian Zhang <zhanggenjian@kylinos.cn>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2022-06-21 16:50:58 +02:00
Sander Vanheule
a01a40e334 gpio: realtek-otto: Make the irqchip immutable
Since commit 6c846d026d ("gpio: Don't fiddle with irqchips marked as
immutable") a warning is issued for the realtek-otto driver:

    gpio gpiochip0: (18003500.gpio): not an immutable chip, please consider fixing it!

Make the driver's irqchip immutable to fix this.

Signed-off-by: Sander Vanheule <sander@svanheule.net>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-06-13 18:13:36 +02:00
Serge Semin
77006f6edc gpio: dwapb: Don't print error on -EPROBE_DEFER
Currently if the APB or Debounce clocks aren't yet ready to be requested
the DW GPIO driver will correctly handle that by deferring the probe
procedure, but the error is still printed to the system log. It needlessly
pollutes the log since there was no real error but a request to postpone
the clock request procedure since the clocks subsystem hasn't been fully
initialized yet. Let's fix that by using the dev_err_probe method to print
the APB/clock request error status. It will correctly handle the deferred
probe situation and print the error if it actually happens.

Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-06-10 14:26:15 +02:00
Andy Shevchenko
b93a8b2c51 gpio: dln2: make irq_chip immutable
Since recently, the kernel is nagging about mutable irq_chips:

   "not an immutable chip, please consider fixing it!"

Drop the unneeded copy, flag it as IRQCHIP_IMMUTABLE, add the new
helper functions and call the appropriate gpiolib functions.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2022-06-06 14:09:16 +03:00
Andy Shevchenko
f1138dacb7 gpio: sch: make irq_chip immutable
Since recently, the kernel is nagging about mutable irq_chips:

   "not an immutable chip, please consider fixing it!"

Drop the unneeded copy, flag it as IRQCHIP_IMMUTABLE, add the new
helper functions and call the appropriate gpiolib functions.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-06-06 14:09:16 +03:00
Andy Shevchenko
a80fed9fb6 gpio: merrifield: make irq_chip immutable
Since recently, the kernel is nagging about mutable irq_chips:

   "not an immutable chip, please consider fixing it!"

Drop the unneeded copy, flag it as IRQCHIP_IMMUTABLE, add the new
helper functions and call the appropriate gpiolib functions.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2022-06-06 14:09:16 +03:00
Andy Shevchenko
41a18c4918 gpio: wcove: make irq_chip immutable
Since recently, the kernel is nagging about mutable irq_chips:

   "not an immutable chip, please consider fixing it!"

Drop the unneeded copy, flag it as IRQCHIP_IMMUTABLE, add the new
helper functions and call the appropriate gpiolib functions.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
2022-06-06 14:09:16 +03:00
Andy Shevchenko
68a12c19e1 gpio: crystalcove: Join function declarations and long lines
There is no more hard limit of 80 characters for long lines, so
join a few of them for better readability.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2022-06-06 14:09:16 +03:00
Andy Shevchenko
b34d2ad73a gpio: crystalcove: Use specific type and API for IRQ number
Use specific type and API for IRQ number in the callbacks.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2022-06-06 14:09:15 +03:00
Andy Shevchenko
386cbe7f1b gpio: crystalcove: make irq_chip immutable
Since recently, the kernel is nagging about mutable irq_chips:

   "not an immutable chip, please consider fixing it!"

Drop the unneeded copy, flag it as IRQCHIP_IMMUTABLE, add the new
helper functions and call the appropriate gpiolib functions.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2022-06-06 14:09:15 +03:00
Linus Torvalds
2981436374 hte: New subsystem for v5.19-rc1
This contains the new HTE subsystem that has been in the works for a
 couple of months now. The infrastructure provided allows for drivers to
 register as hardware timestamp providers, while consumers will be able
 to request events that they are interested in (such as GPIOs and IRQs)
 to be timestamped by the hardware providers.
 
 Note that this currently supports only one provider, but there seems to
 be enough interest in this functionality and we expect to see more
 drivers added once this is merged.
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Merge tag 'hte/for-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux

Pull hardware timestamping subsystem from Thierry Reding:
 "This contains the new HTE (hardware timestamping engine) subsystem
  that has been in the works for a couple of months now.

  The infrastructure provided allows for drivers to register as hardware
  timestamp providers, while consumers will be able to request events
  that they are interested in (such as GPIOs and IRQs) to be timestamped
  by the hardware providers.

  Note that this currently supports only one provider, but there seems
  to be enough interest in this functionality and we expect to see more
  drivers added once this is merged"

[ Linus Walleij mentions the Intel PMC in the Elkhart and Tiger Lake
  platforms as another future timestamp provider ]

* tag 'hte/for-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
  dt-bindings: timestamp: Correct id path
  dt-bindings: Renamed hte directory to timestamp
  hte: Uninitialized variable in hte_ts_get()
  hte: Fix off by one in hte_push_ts_ns()
  hte: Fix possible use-after-free in tegra_hte_test_remove()
  hte: Remove unused including <linux/version.h>
  MAINTAINERS: Add HTE Subsystem
  hte: Add Tegra HTE test driver
  tools: gpio: Add new hardware clock type
  gpiolib: cdev: Add hardware timestamp clock type
  gpio: tegra186: Add HTE support
  gpiolib: Add HTE support
  dt-bindings: Add HTE bindings
  hte: Add Tegra194 HTE kernel provider
  drivers: Add hardware timestamp engine (HTE) subsystem
  Documentation: Add HTE subsystem guide
2022-06-05 09:12:28 -07:00
Linus Torvalds
032dcf09e2 gpio updates for v5.19-rc1
- use the correct register for regcache sync in gpio-pca953x
 - remove unused and potentially harmful code from gpio-adp5588
 - MAINTAINERS update
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Merge tag 'gpio-fixes-for-v5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio fixes from Bartosz Golaszewski:

 - use the correct register for regcache sync in gpio-pca953x

 - remove unused and potentially harmful code from gpio-adp5588

 - MAINTAINERS update

* tag 'gpio-fixes-for-v5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
  gpio: adp5588: Remove support for platform setup and teardown callbacks
  gpio: pca953x: use the correct register address to do regcache sync
  MAINTAINERS: Update Intel GPIO (PMIC and PCH) to Supported
  MAINTAINERS: Update GPIO ACPI library to Supported
2022-06-03 20:01:25 -07:00
Uwe Kleine-König
7bb8a0cf49 gpio: adp5588: Remove support for platform setup and teardown callbacks
If the teardown callback failed in the gpio driver, it fails to free the
irq (if there is one). The device is removed anyhow. If later on the irq
triggers, all sorts of unpleasant things might happen (e.g. accessing
the struct adp5588_gpio which is already freed in the meantime or starting
i2c bus transfers for an unregistered device). Even before irq support was
added to this driver, exiting early was wrong; back then it failed to
unregister the gpiochip.

Fortunately these callbacks aren't used any more since at least blackfin
was removed in 2018. So just drop them.

Note that they are not removed from struct adp5588_gpio_platform_data
because the keyboard driver adp5588-keys.c also makes use of them.
(I didn't check if the callbacks might have been called twice, maybe there
is another reason hidden to better not call these functions.)

This patch is a preparation for making i2c remove callbacks return void.

Fixes: 80884094e3 ("gpio: adp5588-gpio: new driver for ADP5588 GPIO expanders")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-06-02 09:17:38 +02:00
Haibo Chen
43624eda86 gpio: pca953x: use the correct register address to do regcache sync
For regcache_sync_region, need to use pca953x_recalc_addr() to get
the real register address.

Fixes: b765743005 ("gpio: pca953x: Restore registers after suspend/resume cycle")
Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-06-01 19:20:27 +02:00
Linus Torvalds
907bb57aa7 Pin control bulk changes for the v5.19 series:
Core changes:
 
 - New helpers from Andy such as for_each_gpiochip_node() affecting both
   GPIO and pin control, improving a bunch of drivers in the process.
 
 - Pulled in Marc Zyngiers work to make IRQ chips immutable, and started
   to apply fixups on top.
 
 New drivers:
 
 - New driver for Marvell MVEBU 98DX2530.
 
 - New driver for Mediatek MT8195.
 
 - Support Qualcomm PMX65 and PM6125.
 
 - New driver for Qualcomm SC7280 LPASS pin control.
 
 - New driver for Rockchip RK3588.
 
 - New driver for NXP Freescale i.MXRT1170.
 
 - New driver for Mediatek MT6795 Helio X10.
 
 Improvements:
 
 - Several Aspeed G6 cleanups and non-critical fixes.
 
 - Thorought refactoring of some of the ever improving Renesas drivers.
 
 - Clean up Mediatek MT8192 bindings a bit.
 
 - PWM output and clock monitoring in the Ocelot LAN966x driver.
 
 - Thorough refactoring and cleanup of the Ralink drivers such as
   RT2880, RT3883, RT305X, MT7620, MT7621, MT7628 splitting these into proper
   sub-drivers.
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Merge tag 'pinctrl-v5.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control updates from Linus Walleij:
 "Pretty big this time. Mostly due to (nice) Renesas refactorings.

  Core changes:

   - New helpers from Andy such as for_each_gpiochip_node() affecting
     both GPIO and pin control, improving a bunch of drivers in the
     process.

   - Pulled in Marc Zyngiers work to make IRQ chips immutable, and
     started to apply fixups on top.

  New drivers:

   - New driver for Marvell MVEBU 98DX2530.

   - New driver for Mediatek MT8195.

   - Support Qualcomm PMX65 and PM6125.

   - New driver for Qualcomm SC7280 LPASS pin control.

   - New driver for Rockchip RK3588.

   - New driver for NXP Freescale i.MXRT1170.

   - New driver for Mediatek MT6795 Helio X10.

  Improvements:

   - Several Aspeed G6 cleanups and non-critical fixes.

   - Thorought refactoring of some of the ever improving Renesas
     drivers.

   - Clean up Mediatek MT8192 bindings a bit.

   - PWM output and clock monitoring in the Ocelot LAN966x driver.

   - Thorough refactoring and cleanup of the Ralink drivers such as
     RT2880, RT3883, RT305X, MT7620, MT7621, MT7628 splitting these into
     proper sub-drivers"

* tag 'pinctrl-v5.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (161 commits)
  pinctrl: apple: Use a raw spinlock for the regmap
  pinctrl: berlin: bg4ct: Use devm_platform_*ioremap_resource() APIs
  pinctrl: intel: Fix kernel doc format, i.e. add return sections
  dt-bindings: pinctrl: qcom: Drop 'maxItems' on 'wakeup-parent'
  pinctrl: starfive: Make the irqchip immutable
  pinctrl: mediatek: Add pinctrl driver for MT6795 Helio X10
  dt-bindings: pinctrl: Add MediaTek MT6795 pinctrl bindings
  pinctrl: freescale: Add i.MXRT1170 pinctrl driver support
  dt-bindings: pinctrl: add i.MXRT1170 pinctrl Documentation
  dt-bindings: pinctrl: rockchip: increase max amount of device functions
  dt-bindings: pinctrl: qcom,pmic-gpio: add 'gpio-reserved-ranges'
  dt-bindings: pinctrl: qcom,pmic-gpio: add 'input-disable'
  dt-bindings: pinctrl: qcom,pmic-gpio: describe gpio-line-names
  dt-bindings: pinctrl: qcom,pmic-gpio: fix matching pin config
  dt-bindings: pinctrl: qcom,pmic-gpio: document PM8150L and PMM8155AU
  pinctrl: qcom: spmi-gpio: Add pm6125 compatible
  dt-bindings: pinctrl: qcom-pmic-gpio: Add pm6125 compatible
  pinctrl: intel: Drop unused irqchip member in struct intel_pinctrl
  pinctrl: intel: make irq_chip immutable
  pinctrl: cherryview: Use GPIO chip pointer in chv_gpio_irq_mask_unmask()
  ...
2022-05-28 11:15:54 -07:00
Linus Torvalds
7182e89769 gpio updates for v5.19
- use ioread()/iowrite() interfaces instead of raw inb()/outb() in drivers
 - make irqchips immutable due to the new warning popping up when drivers try to
   modify the irqchip structures
 - add new compatibles to dt-bindings for realtek-otto, renesas-rcar and pca95xx
 - add support for new models to gpio-rcar, gpio-pca953x & gpio-realtek-otto
 - allow parsing of GPIO hogs represented as children nodes of gpio-uniphier
 - define a set of common GPIO consumer strings in dt-bindings
 - shrink code in gpio-ml-ioh by using more devres interfaces
 - pass arguments to devm_kcalloc() in correct order in gpio-sim
 - add new helpers for iterating over GPIO firmware nodes and descriptors to
   gpiolib core and use it in several drivers
 - drop unused syscon_regmap_lookup_by_compatible() function
 - correct format specifiers and signedness of variables in GPIO ACPI
 - drop unneeded error checks in gpio-ftgpio
 - stop using the deprecated of_gpio.h header in gpio-zevio
 - drop platform_data support in gpio-max732x
 - simplify Kconfig dependencies in gpio-vf610
 - use raw spinlocks where needed to make PREEMPT_RT happy
 - fix return values in board files using gpio-pcf857x
 - convert more drivers to using fwnode instead of of_node
 - minor fixes and improvements in gpiolib core
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Merge tag 'gpio-updates-for-v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio updates from Bartosz Golaszewski:
 "We have lots of small changes all over the place, but no huge reworks
  or new drivers:

   - use ioread()/iowrite() interfaces instead of raw inb()/outb() in
     drivers

   - make irqchips immutable due to the new warning popping up when
     drivers try to modify the irqchip structures

   - add new compatibles to dt-bindings for realtek-otto, renesas-rcar
     and pca95xx

   - add support for new models to gpio-rcar, gpio-pca953x &
     gpio-realtek-otto

   - allow parsing of GPIO hogs represented as children nodes of
     gpio-uniphier

   - define a set of common GPIO consumer strings in dt-bindings

   - shrink code in gpio-ml-ioh by using more devres interfaces

   - pass arguments to devm_kcalloc() in correct order in gpio-sim

   - add new helpers for iterating over GPIO firmware nodes and
     descriptors to gpiolib core and use it in several drivers

   - drop unused syscon_regmap_lookup_by_compatible() function

   - correct format specifiers and signedness of variables in GPIO ACPI

   - drop unneeded error checks in gpio-ftgpio

   - stop using the deprecated of_gpio.h header in gpio-zevio

   - drop platform_data support in gpio-max732x

   - simplify Kconfig dependencies in gpio-vf610

   - use raw spinlocks where needed to make PREEMPT_RT happy

   - fix return values in board files using gpio-pcf857x

   - convert more drivers to using fwnode instead of of_node

   - minor fixes and improvements in gpiolib core"

* tag 'gpio-updates-for-v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (55 commits)
  gpio: sifive: Make the irqchip immutable
  gpio: rcar: Make the irqchip immutable
  gpio: pcf857x: Make the irqchip immutable
  gpio: pca953x: Make the irqchip immutable
  gpio: dwapb: Make the irqchip immutable
  gpio: sim: Use correct order for the parameters of devm_kcalloc()
  gpio: ml-ioh: Convert to use managed functions pcim* and devm_*
  gpio: ftgpio: Remove unneeded ERROR check before clk_disable_unprepare
  gpio: ws16c48: Utilize iomap interface
  gpio: gpio-mm: Utilize iomap interface
  gpio: 104-idio-16: Utilize iomap interface
  gpio: 104-idi-48: Utilize iomap interface
  gpio: 104-dio-48e: Utilize iomap interface
  gpio: zevio: drop of_gpio.h header
  gpio: max77620: Make the irqchip immutable
  dt-bindings: gpio: pca95xx: add entry for pca6408
  gpio: pca953xx: Add support for pca6408
  gpio: max732x: Drop unused support for irq and setup code via platform data
  gpio: vf610: drop the SOC_VF610 dependency for GPIO_VF610
  gpio: syscon: Remove usage of syscon_regmap_lookup_by_compatible
  ...
2022-05-26 14:51:38 -07:00
Geert Uytterhoeven
5a7cb9f397 gpio: sifive: Make the irqchip immutable
Commit 6c846d026d ("gpio: Don't fiddle with irqchips marked as
immutable") added a warning to indicate if the gpiolib is altering the
internals of irqchips.  Following this change the following warning is
now observed for the sifive driver:

    gpio gpiochip1: (38001000.gpio-controller): not an immutable chip, please consider fixing it!

Fix this by making the irqchip in the sifive driver immutable.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-05-24 16:35:52 +02:00
Geert Uytterhoeven
718b972d32 gpio: rcar: Make the irqchip immutable
Commit 6c846d026d ("gpio: Don't fiddle with irqchips marked as
immutable") added a warning to indicate if the gpiolib is altering the
internals of irqchips.  Following this change the following warning is
now observed for the gpio-rcar driver:

    gpio gpiochip0: (e6050000.gpio): not an immutable chip, please consider fixing it!

Fix this by making the irqchip in the gpio-rcar driver immutable.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2022-05-24 16:35:49 +02:00