Introduce a new API and handle deferred list via it which moves
towards isolating the GPIO ACPI and quirk APIs. It will helps
splitting them completely in the next changes.
No functional changes.
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Switch to use enum instead of pointers in acpi_gpio_in_ignore_list()
which moves towards isolating the GPIO ACPI and quirk APIs. It will
helps splitting them completely in the next changes.
No functional changes.
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
The previous refactoring missed the filling of the struct acpi_gpio_info
and that's how the lot of the code got eliminated. Restore those pieces
by passing the pointer all down in the call stack.
With this, the code grows by ~6%, but in conjunction with the previous
refactoring it still gives -387 bytes
add/remove: 2/0 grow/shrink: 5/1 up/down: 852/-35 (817)
Function old new delta
acpi_dev_gpio_irq_wake_get_by 129 695 +566
acpi_find_gpio 216 354 +138
acpi_find_gpio.__UNIQUE_ID_ddebug504 - 56 +56
acpi_dev_gpio_irq_wake_get_by.__UNIQUE_ID_ddebug506 - 56 +56
acpi_populate_gpio_lookup 536 548 +12
acpi_gpio_property_lookup 414 426 +12
acpi_get_gpiod_by_index 307 319 +12
__acpi_find_gpio 638 603 -35
Total: Before=14154, After=14971, chg +5.77%
As a positive side effect, it improves memory footprint for
struct acpi_gpio_lookup. `pahole` difference before and after:
- /* size: 64, cachelines: 1, members: 4 */
- /* member types with holes: 1, total: 1 */
+ /* size: 32, cachelines: 1, members: 4 */
Reported-by: Kees Bakker <kees@ijzerbout.nl>
Closes: https://lore.kernel.org/r/9715c8dd-38df-48fd-a9d1-7a78163dc989@ijzerbout.nl
Fixes: 8b4f52ef7a ("gpiolib: acpi: Deduplicate some code in __acpi_find_gpio()")
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Use temporary variable to access the struct acpi_gpio_info members.
This will help further changes to be cleaner. No functional change
intended.
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
On Qualcomm platforms if the board uses GPIO hogs msm_pinmux_request()
calls gpiochip_line_is_valid(). After commit 8015443e24 ("gpio: Hide
valid_mask from direct assignments") gpiochip_line_is_valid() uses
gc->gpiodev, which is NULL when GPIO hog pins are being processed.
Thus after this commit using GPIO hogs causes the following crash. In
order to fix this, verify that gc->gpiodev is not NULL.
Note: it is not possible to reorder calls (e.g. by calling
msm_gpio_init() before pinctrl registration or by splitting
pinctrl_register() into _and_init() and pinctrl_enable() and calling the
latter function after msm_gpio_init()) because GPIO chip registration
would fail with EPROBE_DEFER if pinctrl is not enabled at the time of
registration.
pc : gpiochip_line_is_valid+0x4/0x28
lr : msm_pinmux_request+0x24/0x40
sp : ffff8000808eb870
x29: ffff8000808eb870 x28: 0000000000000000 x27: 0000000000000000
x26: 0000000000000000 x25: ffff726240f9d040 x24: 0000000000000000
x23: ffff7262438c0510 x22: 0000000000000080 x21: ffff726243ea7000
x20: ffffab13f2c4e698 x19: 0000000000000080 x18: 00000000ffffffff
x17: ffff726242ba6000 x16: 0000000000000100 x15: 0000000000000028
x14: 0000000000000000 x13: 0000000000002948 x12: 0000000000000003
x11: 0000000000000078 x10: 0000000000002948 x9 : ffffab13f50eb5e8
x8 : 0000000003ecb21b x7 : 000000000000002d x6 : 0000000000000b68
x5 : 0000007fffffffff x4 : ffffab13f52f84a8 x3 : ffff8000808eb804
x2 : ffffab13f1de8190 x1 : 0000000000000080 x0 : 0000000000000000
Call trace:
gpiochip_line_is_valid+0x4/0x28 (P)
pin_request+0x208/0x2c0
pinmux_enable_setting+0xa0/0x2e0
pinctrl_commit_state+0x150/0x26c
pinctrl_enable+0x6c/0x2a4
pinctrl_register+0x3c/0xb0
devm_pinctrl_register+0x58/0xa0
msm_pinctrl_probe+0x2a8/0x584
sdm845_pinctrl_probe+0x20/0x88
platform_probe+0x68/0xc0
really_probe+0xbc/0x298
__driver_probe_device+0x78/0x12c
driver_probe_device+0x3c/0x160
__device_attach_driver+0xb8/0x138
bus_for_each_drv+0x84/0xe0
__device_attach+0x9c/0x188
device_initial_probe+0x14/0x20
bus_probe_device+0xac/0xb0
deferred_probe_work_func+0x8c/0xc8
process_one_work+0x208/0x5e8
worker_thread+0x1b4/0x35c
kthread+0x144/0x220
ret_from_fork+0x10/0x20
Code: b5fffba0 17fffff2 9432ec27 f9400400 (f9428800)
Fixes: 8015443e24 ("gpio: Hide valid_mask from direct assignments")
Reported-by: Doug Anderson <dianders@chromium.org>
Closes: https://lore.kernel.org/r/CAD=FV=Vg8_ZOLgLoC4WhFPzhVsxXFC19NrF38W6cW_W_3nFjbw@mail.gmail.com
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Matti Vaittinen <mazziesaccount@gmail.com>
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Link: https://lore.kernel.org/20250513-pinctrl-msm-fix-v2-1-249999af0fc1@oss.qualcomm.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
irq_domain_add_*() interfaces are going away as being obsolete now.
Switch to the preferred irq_domain_create_*() ones. Those differ in the
node parameter: They take more generic struct fwnode_handle instead of
struct device_node. Therefore, of_fwnode_handle() is added around the
original parameter.
Note some of the users can likely use dev->fwnode directly instead of
indirect of_fwnode_handle(dev->of_node). But dev->fwnode is not
guaranteed to be set for all, so this has to be investigated on case to
case basis (by people who can actually test with the HW).
[ tglx: Fix up subject prefix ]
Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/20250319092951.37667-18-jirislaby@kernel.org
The gpiolib is moving to make irq_chip immutable, otherwise
there is warning: "not an immutable chip, please consider fixing it!"
The bcm_gpio_irq_chip already has irq hooks configured correctly,
bcm_kona_gpio_irq_mask/bcm_kona_gpio_irq_unmask calls gpiochip_disable_irq/
gpiochip_enable_irq, and bcm_kona_gpio_irq_reqres/irq_release_resources
calls gpiochip_reqres_irq/gpiochip_relres_irq.
So just need to flag it as IRQCHIP_IMMUTABLE.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250509-gpio-v1-1-639377c98288@nxp.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
If an input changes state during wake-up and is used as an interrupt
source, the IRQ handler reads the volatile input register to clear the
interrupt mask and deassert the IRQ line. However, the IRQ handler is
triggered before access to the register is granted, causing the read
operation to fail.
As a result, the IRQ handler enters a loop, repeatedly printing the
"failed reading register" message, until `pca953x_resume()` is eventually
called, which restores the driver context and enables access to
registers.
Fix by disabling the IRQ line before entering suspend mode, and
re-enabling it after the driver context is restored in `pca953x_resume()`.
An IRQ can be disabled with disable_irq() and still wake the system as
long as the IRQ has wake enabled, so the wake-up functionality is
preserved.
Fixes: b765743005 ("gpio: pca953x: Restore registers after suspend/resume cycle")
Cc: stable@vger.kernel.org
Signed-off-by: Emanuele Ghidoli <emanuele.ghidoli@toradex.com>
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20250512095441.31645-1-francesco@dolcini.it
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
The blzp1600_gpio_of_match is defined unconditionally and can always be referenced
by the driver, so don't use of_match_ptr() and avoid this warning:
drivers/gpio/gpio-blzp1600.c:263:34: error: 'blzp1600_gpio_of_match' defined but not used [-Werror=unused-const-variable=]
263 | static const struct of_device_id blzp1600_gpio_of_match[] = {
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20250502203721.2117186-1-arnd@kernel.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
