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Add a new generic pin configuration parameter PIN_CONFIG_INPUT_VOLTAGE_UV.
This parameter is used to specify the input voltage level of a pin in
microvolts, which corresponds to the 'input-voltage-microvolt' property
in Device Tree.
Reviewed-by: Linus Walleij <linusw@kernel.org>
Signed-off-by: Tzuyi Chang <tychang@realtek.com>
Co-developed-by: Yu-Chun Lin <eleanor.lin@realtek.com>
Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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The argument originates from pinconf_to_config_argument(), which returns a
u32. Therefore, the arg parameter should be an unsigned int instead of enum
pin_config_param.
Fixes: e99ce78030db ("pinctrl: realtek: Add common pinctrl driver for Realtek DHC RTD SoCs")
Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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Some pinctrl devices like mt6397 or mt6392 don't support EINT at all, but
the mtk_eint_init function is always called and returns -ENODEV, which
then bubbles up and causes probe failure.
To address this only call mtk_eint_init if EINT pins are present.
Tested on Xiaomi Mi Smart Clock x04g (mt6392).
Fixes: e46df235b4e6 ("pinctrl: mediatek: refactor EINT related code for all MediaTek pinctrl can fit")
Signed-off-by: Luca Leonardo Scorcia <l.scorcia@gmail.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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Convert pinconf_generic_parse_dt_pinmux() to fwnode API. This makes code
cleaner and potentially reusable for some other types of fwnodes, such as
software nodes.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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Currently we convert device node to fwnode in the
pinconf_generic_parse_dt_config() and then validate the device node.
This is confusing order. Instead, assign fwnode and validate it.
Fixes: e002d162654b ("pinctrl: pinconf-generic: Use only fwnode API in parse_dt_cfg()")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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The pinconf_generic_parse_dt_pinmux() assumes that the 'pinmux' property
is not empty when present. This might be not true. With that, the allocator
will give a special value in return and not NULL which lead to the crash
when trying to access that (invalid) memory. Fix that by fully validating
'pinmux' value, including its length.
Fixes: 7112c05fff83 ("pinctrl: pinconf-generic: Add API for pinmux propertity in DTS file")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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The HDP driver uses the generic GPIO chip API, but this configuration
may not be enabled.
Ensure it is enabled by selecting the appropriate option.
Fixes: 4bcff9c05b9d ("pinctrl: stm32: use new generic GPIO chip API")
Signed-off-by: Amelie Delaunay <amelie.delaunay@foss.st.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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Simplifies allocation slightly by removing a kcalloc call and using
struct_size.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
[linusw@kernel.org: Add in count variable and use __counted_by()]
Signed-off-by: Linus Walleij <linusw@kernel.org>
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Return -ENOTSUPP instead of -EINVAL when encountering unsupported pin
configuration parameters. This is more logical and allows the GPIO
subsystem to gracefully handle unsupported parameters via functions like
gpio_set_config_with_argument_optional(), which specifically ignores
-ENOTSUPP but treats others as failure.
Signed-off-by: Junhui Liu <junhui.liu@pigmoral.tech>
Reviewed-by: Anand Moon <linux.amoon@gmail.com>
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Reviewed-by: Yixun Lan <dlan@kernel.org>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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Starting from revision 1.1 of the Chassis specification the PAD_OWN
is represented by 3 bits instead of 2 bits in the previous revisions.
Update the driver to support this feature.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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The 1kOhm pull down and hardware debouncer are features of the revision 0.92
of the Chassis specification. Fix that in the code accordingly.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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The register space of a certain capability starts at the offset just after
the respective node in the capability list. It means that there are no fixed
offsets for them from SoC to SoC generation and they have to be calculated
at run-time. Improve capability support by adding the respective calculation
algorithm and in the result enable PWM on more platforms that currently may
use the wrong register.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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Replace NULL check with IS_ERR() for devm_platform_ioremap_resource()
return value. Use dev_err_probe() for error handling to maintain
consistency with the rest of the probe function.
Fixes: b7f698b22b8b ("pinctrl: realtek: Switch to use devm functions")
Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers into fixes
pinctrl: renesas: Fixes for v7.0
- Fix device node leaks and invalid wait contexts on RZ/T2H and
RZ/N2H,
- Fix GPIO .get() callback on RZ/A1.
Signed-off-by: Linus Walleij <linusw@kernel.org>
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Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
Change generated with coccinelle.
To: Linus Walleij <linusw@kernel.org>
Cc: linux-gpio@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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Add a driver for the pin controller in the Low Power Audio SubSystem
(LPASS) on the Milos SoC.
Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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When probe fails due to unclear interrupt status register, it returns
a positive number instead of the proper error code. Fix this accordingly.
Fixes: e6cbbe42944d ("pinctrl: Add Cypress cy8c95x0 support")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/r/202602271847.vVWkqLBD-lkp@intel.com/
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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The GPIO .get() callback is expected to return 0 or 1 (or a negative
error code). Ensure that the value returned by rza1_gpio_get() is
normalized to the [0, 1] range.
Fixes: 86ef402d805d606a ("gpiolib: sanitize the return value of gpio_chip::get()")
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/aZYnyl-Nf4S1U2yj@google.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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Add system suspend and resume capabilities to the common Realtek pinctrl
library. This enables saving and restoring pin configurations during the
noirq phase for SoCs that define register ranges.
Signed-off-by: Tzuyi Chang <tychang@realtek.com>
Co-developed-by: Yu-Chun Lin <eleanor.lin@realtek.com>
Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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Correct the grammar in dev_err() messages. Change "Not support <feature>..."
to "<feature> unsupported..." to improve readability and comply with
standard English usage.
Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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Convert the error handling code in probe() to use dev_err_probe() to
enhance semantic meaning.
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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Simplify the probe() function by switching to devm-managed versions of
ioremap and pinctrl registration.
Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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Treating unsupported configurations as errors causes upper layers (like the
GPIO subsystem) to interpret optional features as hard failures, aborting
operations or printing unnecessary error logs.
For example, during gpiod_get(), the GPIO framework attempts to set
PIN_CONFIG_PERSIST_STATE. Since this driver does not support it, false
error reports are generated in dmesg.
Fix this by returning -ENOTSUPP and demoting the log level to dev_dbg.
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Signed-off-by: Tzuyi Chang <tychang@realtek.com>
Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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Prefer "GPL" over "GPL v2" - see commit bf7fbeeae6db
("module: Cure the MODULE_LICENSE "GPL" vs. "GPL v2" bogosity")
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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Insert a "*" in the kernel-doc line to resolve a warning:
Warning: drivers/pinctrl/nxp/pinctrl-s32.h:18 bad line: this group.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Dong Aisheng <Aisheng.dong@nxp.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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GPIO controller driver should typically implement the .get_direction()
callback as GPIOLIB internals may try to use it to determine the state
of a pin. Since introduction of shared proxy, it prints a warning splat
when using a shared spmi gpio.
The implementation is not easy because the controller supports enabling
the input and output logic at the same time, so we aligns on the
behaviour of the .get() operation and return -EINVAL in other
situations.
Fixes: eadff3024472 ("pinctrl: Qualcomm SPMI PMIC GPIO pin controller driver")
Fixes: d7b5f5cc5eb4 ("pinctrl: qcom: spmi-gpio: Add support for GPIO LV/MV subtype")
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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The parse_dt_cfg() uses OF and fwnode APIs. Fix this inconsistency by
fully switching it to use fwnode API and rename the function accordingly.
While at it, add missing linux/property.h inclusion.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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i.MX95 SCMI firmware is only present on NXP i.MX94 and i.MX95 SoCs.
Hence add a dependency on ARCH_MXC, to prevent asking the user about
this driver when configuring a kernel without NXP i.MX SoC family
support.
While at it, relax the dependencies on ARM_SCMI_PROTOCOL and OF when
compile-testing.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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OF_GPIO is selected automatically on all OF systems. Any symbols it
controls also provide stubs so there's really no reason to select it
explicitly.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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The rzt2h_gpio_get_direction() function is called from
gpiod_get_direction(), which ends up being used within the __setup_irq()
call stack when requesting an interrupt.
__setup_irq() holds a raw_spinlock_t with IRQs disabled, which creates
an atomic context. spinlock_t cannot be used within atomic context
when PREEMPT_RT is enabled, since it may become a sleeping lock.
An "[ BUG: Invalid wait context ]" splat is observed when running with
CONFIG_PROVE_LOCKING enabled, describing exactly the aforementioned call
stack.
__setup_irq() needs to hold a raw_spinlock_t with IRQs disabled to
serialize access against a concurrent hard interrupt.
Switch to raw_spinlock_t to fix this.
Fixes: 829dde3369a9 ("pinctrl: renesas: rzt2h: Add GPIO IRQ chip to handle interrupts")
Signed-off-by: Cosmin Tanislav <cosmin-gabriel.tanislav.xa@renesas.com>
Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20260205103930.666051-1-cosmin-gabriel.tanislav.xa@renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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When calling of_parse_phandle_with_fixed_args(), the caller is
responsible for calling of_node_put() to release the device node
reference.
In rzt2h_gpio_register(), the driver fails to call of_node_put() to
release the reference in of_args.np, which causes a memory leak.
Add the missing of_node_put() call to fix the leak.
Fixes: 34d4d093077a ("pinctrl: renesas: Add support for RZ/T2H")
Signed-off-by: Felix Gu <ustc.gu@gmail.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20260127-rzt2h-v1-1-86472e7421b8@gmail.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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In mpfs_pinctrl_probe(), when pctrl->regmap fails, it just print out an
error message without return, which could lead serious errors.
Fixes: 488d704ed7b7 ("pinctrl: add polarfire soc mssio pinctrl driver")
Signed-off-by: Felix Gu <ustc.gu@gmail.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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When applying a pinctrl state, -EPROBE_DEFER may be returned if
dependencies are not ready and the consumer will retry probing.
This is normal probe ordering behaviour and not a real error.
However, pinctrl core currently logs:
"Error applying setting, reverse things back"
even when the return value is -EPROBE_DEFER, resulting in noisy
boot-time error messages.
Replace dev_err() with dev_err_probe() to handle -EPROBE_DEFER
consistently and suppress error logging for deferred probes.
No functional change intended.
Signed-off-by: Michal Piekos <michal.piekos@mmpsystems.pl>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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Convert gpiochip_add_data() to devm_gpiochip_add_data() to use devres
style cleanup across entire driver.
Suggested-by: Linus Walleij <linusw@kernel.org>
Signed-off-by: Ethan Tidmore <ethantidmore06@gmail.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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Fix three possible resource leaks by using the devres version of
clk_prepare_enable(). Also, update error message accordingly.
Detected by Smatch:
drivers/pinctrl/pinctrl-pic32.c:2211 pic32_pinctrl_probe() warn:
'pctl->clk' from clk_prepare_enable() not released on lines: 2208.
drivers/pinctrl/pinctrl-pic32.c:2274 pic32_gpio_probe() warn:
'bank->clk' from clk_prepare_enable() not released on lines: 2264,2272.
Fixes: 2ba384e6c3810 ("pinctrl: pinctrl-pic32: Add PIC32 pin control driver")
Signed-off-by: Ethan Tidmore <ethantidmore06@gmail.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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Add the match data for the pinctrl found in the EyeQ6Lplus OLB. The pin
control is identical in function to the one present in the EyeQ5 but
has a single bank of 32 pins.
Signed-off-by: Benoît Monin <benoit.monin@bootlin.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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Instead of using the pin descriptions, pin functions and register offsets
of the EyeQ5 directly, access those via a pointer to a newly introduced
struct eq5p_match_data.
This structure contains, in addition to the pin descriptions and pin
functions, an array of pin banks. Each bank holds the number of pins
and the register offsets.
All functions accessing a pin now use a pointer to a bank structure and
an offset inside that bank. The conversion from a pin number to a bank
and an offset is done in the new function eq5p_pin_to_bank_offset(),
which replace eq5p_pin_to_bank() and eq5p_pin_to_offset().
All the data related to the EyeQ5 is declared with the eq5p_eyeq5_
prefix to distinguish it from the common code.
During the probe, we use the parent OF node to get the match data.
We cannot directly use an OF node since pinctrl-eyeq5 is an auxiliary
device of clk-eyeq.
Signed-off-by: Benoît Monin <benoit.monin@bootlin.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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Some pinconf properties are mutually exclusive, either because they
convey the same information in different units or represent incompatible
configurations of the same pin. Attempt, in two ways, to prevent these
situations.
Firstly, for enable/disable properties, produce an error if both are
set. Since enable/disable properties share the same enum value, they can
be trivially checked via the newly added bitmap. Having both enable and
disable for the same config makes no sense at all, so produce an error
in this case.
For interactions between properties, doing them outside the loop makes
more sense as it can be evaluated once. In case there are some edge
cases that would be broken by producing an error, only warn for now.
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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We have three ID tables spread over the driver code. Move all of them
closer to the end of the file where the first user appears to be. With
that done, drop unneeded trailing commas.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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The I²C ID table is a subject to new entries that may potentially
break the order of the existing ones. Avoid this by using string
literals for the chip naming. Note, linker will deduplicate same
string literals and use only a single copy, hence it won't be the
change in size in data section.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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The 'name' is only assigned and never used. Drop it for good.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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For all these years of driver existence the driver_data has been used
only as a raw material for other fields in the struct cy8c95x0_pinctrl.
Move it from the structure to be just a local variable in ->probe().
Later, if ever need arises, we may reconsider that.
While at it, drop an unneeded validation and replace uintptr_t with plain
unsigned long which is more readable and works in the same way.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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Unify error messages that might appear during probe phase by
switching to use dev_err_probe().
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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The pin control core is covered to report any error via message.
The devm_request_threaded_irq() already prints an error message.
Remove the duplicates.
While at it, drop the info message as the same information about
an IRQ in use can be retrieved differently.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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Use devm_mutex_init() since it brings some benefits when
CONFIG_DEBUG_MUTEXES is enabled.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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When code had been changed to use for_each_set_clump8(), it mistakenly
switched from chip->nport to chip->tpin since the cy8c9540 and cy8c9560
have a 4-pin gap. This, in particular, led to the missed read of
the last bank interrupt status register and hence missing interrupts
on those pins. Restore the upper limit in for_each_set_clump8() to take
into consideration that gap.
Fixes: 83e29a7a1fdf ("pinctrl: cy8c95x0; Switch to use for_each_set_clump8()")
Cc: stable@vger.kernel.org
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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After commit 471e998c0e31 ("gpiolib: remove redundant callback check"),
a warning will be printed if the gpio driver does not implement this
callback. The warning was added in commit e623c4303ed1 ("gpiolib:
sanitize the return value of gpio_chip::get_direction()"), but was
masked by the "redundant" check.
The warning can be triggered by any action that calls the callback,
such as dumping the GPIO state from /sys/kernel/debug/gpio.
Implement it for the sunxi driver. This is simply a matter of reading
out the mux value from the registers, then checking if it is one of
the GPIO functions and which direction it is.
Signed-off-by: Chen-Yu Tsai <wens@kernel.org>
Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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Commit e2c58cbe3aff ("pinctrl: rockchip: Simplify locking with
scoped_guard()") added a scoped_guard() over existing code containing a
"break" instruction. That "break" was for the outer (existing)
for-loop, which now exits inner, scoped_guard() loop. If GPIO driver
did not probe, then driver will not bail out, but instead continue to
configure the pin.
Fix the issue by simplifying the code - the break in original code was
leading directly to end of the function returning 0, thus we can simply
return here rockchip_pinconf_defer_pin status.
Reported-by: David Lechner <dlechner@baylibre.com>
Closes: https://lore.kernel.org/r/f5b38942-a584-4e78-a893-de4a219070b2@baylibre.com/
Fixes: e2c58cbe3aff ("pinctrl: rockchip: Simplify locking with scoped_guard()")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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devm_add_action_or_reset() already invokes the action on failure,
so the explicit put causes a double-put.
Fixes: 9b07cdf86a0b ("pinctrl: cirrus: Fix fwnode leak in cs42l43_pin_probe()")
Signed-off-by: Felix Gu <ustc.gu@gmail.com>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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aml_dt_node_to_map_pinmux()
The of_get_parent() function returns a device_node with an incremented
reference count.
Use the __free(device_node) cleanup attribute to ensure of_node_put()
is automatically called when pnode goes out of scope, fixing a
reference leak.
Fixes: 6e9be3abb78c ("pinctrl: Add driver support for Amlogic SoCs")
Signed-off-by: Felix Gu <ustc.gu@gmail.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
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