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No core changes this time around.
New drivers:
- New driver for Renesas R8A779H0 also known as R-Car V4M.
- New driver for the Awinic AW9523/B I2C GPIO expander.
I found this living out-of-tree in OpenWrt as an upstream
attempt had stalled on the finishing line, so I picked it
up and finished the job.
Improvements:
- The Nomadik pin control driver was for years re-used out of
tree for the ST STA chips, and now the IP was re-used in a
MIPS automotive SoC called MobilEyeq5, so it has been split
in pin control and GPIO drivers so the latter can be reused
by MobilEyeq5. (Along with a long list of cleanups.)
- A lot of overall cleanup and tidying up.
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Merge tag 'pinctrl-v6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control updates from Linus Walleij:
"No core changes this time around.
New drivers:
- New driver for Renesas R8A779H0 also known as R-Car V4M.
- New driver for the Awinic AW9523/B I2C GPIO expander. I found this
living out-of-tree in OpenWrt as an upstream attempt had stalled on
the finishing line, so I picked it up and finished the job.
Improvements:
- The Nomadik pin control driver was for years re-used out of tree
for the ST STA chips, and now the IP was re-used in a MIPS
automotive SoC called MobilEyeq5, so it has been split in pin
control and GPIO drivers so the latter can be reused by MobilEyeq5.
(Along with a long list of cleanups)
- A lot of overall cleanup and tidying up"
* tag 'pinctrl-v6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (87 commits)
drivers/gpio/nomadik: move dummy nmk_gpio_dbg_show_one() to header
gpio: nomadik: remove BUG_ON() in nmk_gpio_populate_chip()
dt-bindings: pinctrl: qcom: update compatible name for match with driver
pinctrl: aw9523: Make the driver tristate
pinctrl: nomadik: fix dereference of error pointer
gpio: nomadik: Back out some managed resources
pinctrl: aw9523: Add proper terminator
pinctrl: core: comment that pinctrl_add_gpio_range() is deprecated
pinctrl: pinmux: Suppress error message for -EPROBE_DEFER
pinctrl: Add driver for Awinic AW9523/B I2C GPIO Expander
dt-bindings: pinctrl: Add bindings for Awinic AW9523/AW9523B
gpio: nomadik: Finish conversion to use firmware node APIs
gpio: nomadik: fix Kconfig dependencies inbetween pinctrl & GPIO
pinctrl: da9062: Add OF table
dt-bindings: pinctrl: at91: add sam9x7
pinctrl: ocelot: remove redundant assignment to variable ret
gpio: nomadik: grab optional reset control and deassert it at probe
gpio: nomadik: support mobileye,eyeq5-gpio
gpio: nomadik: handle variadic GPIO count
gpio: nomadik: support shared GPIO IRQs
...
This contains the usual amount of driver and device tree changes.
Additionally there is a big rework of how pwm lowlevel drivers are
registered to prepare adding character device support.
Thanks to Dharma Balasubiramani, Dong Aisheng, Duje Mihanović, Jerome
Brunet, Raag Jadav and Rafał Miłecki for their contributions. And sorry
for those who still need some patience because I didn't manage to empty
my review queue.
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Merge tag 'pwm/for-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux
Pull pwm updates from Uwe Kleine-König:
"This contains the usual amount of driver and device tree changes.
Additionally there is a big rework of how pwm lowlevel drivers are
registered to prepare adding character device support.
Thanks to Dharma Balasubiramani, Dong Aisheng, Duje Mihanović, Jerome
Brunet, Raag Jadav and Rafał Miłecki for their contributions. And
sorry for those who still need some patience because I didn't manage
to empty my review queue"
* tag 'pwm/for-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux: (185 commits)
pwm: imx-tpm: fix probe crash due to access registers without clock
pwm: meson: generalize 4 inputs clock on meson8 pwm type
dt-bindings: pwm: amlogic: Add a new binding for meson8 pwm types
dt-bindings: pwm: amlogic: fix s4 bindings
pwm: dwc: simplify error handling
pwm: dwc: Add 16 channel support for Intel Elkhart Lake
pwm: dwc: drop redundant error check
staging: greybus: pwm: Make use of devm_pwmchip_alloc() function
staging: greybus: pwm: Rework how the number of PWM lines is determined
staging: greybus: pwm: Drop unused gb_connection_set_data()
staging: greybus: pwm: Rely on pwm framework to pass a valid hwpwm
staging: greybus: pwm: Make use of pwmchip_parent() accessor
staging: greybus: pwm: Change prototype of helpers to prepare further changes
leds: qcom-lpg: Make use of devm_pwmchip_alloc() function
drm/bridge: ti-sn65dsi86: Make use of devm_pwmchip_alloc() function
drm/bridge: ti-sn65dsi86: Make use of pwmchip_parent() accessor
gpio: mvebu: Make use of devm_pwmchip_alloc() function
pwm: xilinx: Make use of devm_pwmchip_alloc() function
pwm: xilinx: Prepare removing pwm_chip from driver data
pwm: vt8500: Make use of devm_pwmchip_alloc() function
...
EPROBE_DEFER error returns are not really critical, since they cancel
the probe process, but the kernel will return later and retry.
However, depending on the probe order, this might issue quite some
verbatim and scary, though pointless messages:
[ 2.388731] 300b000.pinctrl: pin-224 (5000000.serial) status -517
[ 2.397321] 300b000.pinctrl: could not request pin 224 (PH0) from group PH0 on device 300b000.pinctrl
Replace dev_err() with dev_err_probe(), which not only drops the
priority of the message from error to debug, but also puts some text
into debugfs' devices_deferred file, for later reference.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Link: https://lore.kernel.org/r/20240305143859.2449147-1-andre.przywara@arm.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The Awinic AW9523(B) is a multi-function I2C gpio expander in a
TQFN-24L package, featuring PWM (max 37mA per pin, or total max
power 3.2Watts) for LED driving capability.
It has two ports with 8 pins per port (for a total of 16 pins),
configurable as either PWM with 1/256 stepping or GPIO input/output,
1.8V logic input; each GPIO can be configured as input or output
independently from each other.
This IC also has an internal interrupt controller, which is capable
of generating an interrupt for each GPIO, depending on the
configuration, and will raise an interrupt on the INTN pin to
advertise this to an external interrupt controller.
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
Signed-off-by: David Bauer <mail@david-bauer.net>
Link: https://lore.kernel.org/r/20210624214458.68716-2-mail@david-bauer.net
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20240301-awinic-aw9523-v8-1-7ec572f5dfb4@linaro.org
Previously driver got a few updates in order to replace OF APIs by
respective firmware node, however it was not finished to the logical
end, e.g., some APIs that has been used are still require OF node
to be passed. Finish that job by converting leftovers to use firmware
node APIs.
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20240302173401.217830-1-andy.shevchenko@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Add OF table as per the binding so that driver get instantiated and
bind automatically when the driver is built as a module.
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20240226191607.397386-1-biju.das.jz@bp.renesas.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The variable ret is being assigned a value that is never read, it
is being re-assigned a value in every case statement in the following
switch statement. The assignment is redundant and can be removed.
Cleans up clang scan build warning:
drivers/pinctrl/pinctrl-ocelot.c:1404:3: warning: Value stored to 'ret'
is never read [deadcode.DeadStores]
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://lore.kernel.org/r/20240223162850.3914349-1-colin.i.king@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The call to gpiod_to_gpio_device() does not increase the reference count
of the GPIO device struct so it must not be decreased. Remove the buggy
__free() decorator.
Fixes: 524fc108b8 ("pinctrl: stop using gpiod_to_chip()")
Reported-by: David Arcari <darcari@redhat.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Link: https://lore.kernel.org/r/20240223123214.288181-1-brgl@bgdev.pl
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
We create a custom compatible for the STA2X11 IP block as integrated
into the Mobileye EyeQ5 platform. Its wake and alternate functions have
been disabled, we want to avoid touching those registers.
We both do: (1) early return in functions that do not support the
platform, but with warnings, and (2) avoid calling those functions in
the first place.
We ensure that pinctrl-nomadik is not used with this STA2X11 variant.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
Link: https://lore.kernel.org/r/20240228-mbly-gpio-v2-24-3ba757474006@bootlin.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Move away from statically allocated GPIO IDs. Switch to dynamic ID
allocation. Static IDs are deprecated because they cause issues when
multiple GPIO controllers are to be found on the same platform.
Add a bit of complexity to do pin number -> GPIO chip + offset.
Previously, bank number and offsets were retrieved using division and
remainder (bank size being constant 32). Now, to get the pin number
matching a bank base, we must know the sum of ngpios of previous banks.
This is done in find_nmk_gpio_from_pin() which also exposes the offset
inside the bank.
Also remove the assumption that bank sizes are constant. Instead of
using NMK_GPIO_PER_CHIP as bank size, use nmk_gpio_chips[i]->ngpio.
Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
Link: https://lore.kernel.org/r/20240228-mbly-gpio-v2-19-3ba757474006@bootlin.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Fix strict checkpatch warnings relative to if-else blocks and bool
expressions. Message types addressed:
CHECK: Comparison to NULL could be written "!nmk_cfg_params[index].choice"
CHECK: Unbalanced braces around else statement
CHECK: Using comparison to false is error prone
CHECK: Using comparison to true is error prone
CHECK: braces {} should be used on all arms of this statement
Before: 0 errors, 1 warnings, 16 checks.
After: 0 errors, 1 warnings, 7 checks.
Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
Link: https://lore.kernel.org/r/20240228-mbly-gpio-v2-13-3ba757474006@bootlin.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
nmk_pinctrl_probe() iterates over each GPIO block. Use an early
conditional continue to skip to the next iteration rather than indent
all the loop code block.
Do not change code logic. The block is changed from:
for (i = 0; i < NMK_MAX_BANKS; i++) {
x = of_parse_phandle(...);
if (x) {
... do work ...
}
}
To:
for (i = 0; i < NMK_MAX_BANKS; i++) {
x = of_parse_phandle(...);
if (!x)
continue;
... do work ...
}
Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
Link: https://lore.kernel.org/r/20240228-mbly-gpio-v2-10-3ba757474006@bootlin.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Fix compiler warning found in the pinctrl-nomadik platform driver. GCC
message is as such:
drivers/pinctrl/nomadik/pinctrl-nomadik.c:1169:12: warning: cast from
pointer to integer of different size [-Wpointer-to-int-cast]
Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
Link: https://lore.kernel.org/r/20240228-mbly-gpio-v2-9-3ba757474006@bootlin.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Fix compiler warning found in the pinctrl-nomadik platform driver. GCC
message is as such:
drivers/pinctrl/nomadik/pinctrl-nomadik.c:855:21: warning:
format ‘%u’ expects argument of type ‘unsigned int’, but argument 5
has type ‘size_t {aka const long unsigned int}’ [-Wformat=]
Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
Link: https://lore.kernel.org/r/20240228-mbly-gpio-v2-8-3ba757474006@bootlin.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
PINCTRL_NOMADIK, PINCTRL_STN8815 and PINCTRL_DB8500 depend on ARCH_U8500
or ARCH_NOMADIK. Add COMPILE_TEST as an option to allow test building
the driver.
Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
Link: https://lore.kernel.org/r/20240228-mbly-gpio-v2-7-3ba757474006@bootlin.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Previously, drivers/pinctrl/nomadik/pinctrl-nomadik.c registered two
platform drivers: pinctrl & GPIO. Move the GPIO aspect to the
drivers/gpio/ folder, as would be expected.
Both drivers are intertwined for a reason; pinctrl requires access to
GPIO registers for pinmuxing, pull-disable, disabling interrupts while
setting the muxing and wakeup control. Information sharing is done
through a shared array containing GPIO chips and a few helper
functions. That shared array is not touched from gpio-nomadik when
CONFIG_PINCTRL_NOMADIK is not defined.
Make no change to the code that moved into gpio-nomadik; there should be
no behavior change following. A few functions are shared and header
comments are added. Checkpatch warnings are addressed. NUM_BANKS is
renamed to NMK_MAX_BANKS.
It is supported to compile gpio-nomadik without pinctrl-nomadik. The
opposite is not true.
Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
Link: https://lore.kernel.org/r/20240228-mbly-gpio-v2-6-3ba757474006@bootlin.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Previously, the statement looked like:
slpm[x] &= ~BIT(g->grp.pins[i]);
Where:
- slpm is a unsigned int pointer;
- g->grp.pins[i] is a pin number. It can grow to more than 32.
The expected shift amount is a pin bank offset.
This bug does not occur on every group or pin: the altsetting must be
NMK_GPIO_ALT_C and the pin must be 32 or above. It might have occured.
For example, in pinctrl-nomadik-db8500.c, pin group i2c3_c_2 has the
right altsetting and pins 229 and 230.
Fixes: dbfe8ca259 ("pinctrl/nomadik: implement pin multiplexing")
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
Link: https://lore.kernel.org/r/20240228-mbly-gpio-v2-5-3ba757474006@bootlin.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
- Add support for the R-Car V4M (R8A779H0) SoC,
- Add support for suspend/resume on the RZ/G2L family,
- Miscellaneous fixes and improvements.
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Merge tag 'renesas-pinctrl-for-v6.9-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers into devel
pinctrl: renesas: Updates for v6.9 (take two)
- Add support for the R-Car V4M (R8A779H0) SoC,
- Add support for suspend/resume on the RZ/G2L family,
- Miscellaneous fixes and improvements.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The xlate callbacks are supposed to translate of_phandle_args to proper
provider without modifying the of_phandle_args. Make the argument
pointer to const for code safety and readability.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Thierry Reding <treding@nvidia.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Florian Fainelli <florian.fainelli@broadcom.com> #Broadcom
Link: https://lore.kernel.org/r/20240217093937.58234-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The conversion to DEFINE_NOIRQ_DEV_PM_OPS() lost the ability of the
compiler to optimize away the struct dev_pm_ops object when it is not
needed.
Fix this by replacing the use of pm_sleep_ptr() by a custom wrapper.
Fixes: 727eb02eb7 ("pinctrl: renesas: Switch to use DEFINE_NOIRQ_DEV_PM_OPS() helper")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/6238a78e32fa21f0c795406b6cba7bce7af92577.1708513940.git.geert+renesas@glider.be
pinctrl-rzg2l driver is used on RZ/G3S which support deep sleep states
where power to most of the SoC components is turned off.
For this add suspend/resume support. This involves saving and restoring
configured registers along with disabling clock in case there is no pin
configured as wakeup sources.
To save/restore registers 2 caches were allocated: one for GPIO pins and
one for dedicated pins.
On suspend path the pin controller registers are saved and if none of the
pins are configured as wakeup sources the pinctrl clock is disabled.
Otherwise it remains on.
On resume path the configuration is done as follows:
1/ setup PFCs by writing to registers on pin based accesses
2/ setup GPIOs by writing to registers on port based accesses and
following configuration steps specified in hardware manual
3/ setup dedicated pins by writing to registers on port based accesses
4/ setup interrupts.
Because interrupt signals are routed to IA55 interrupt controller and
IA55 interrupt controller resumes before pin controller, patch restores
also the configured interrupts just after pin settings are restored to
avoid invalid interrupts while resuming.
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20240215124112.2259103-3-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
The pinctrl-rzg2l driver accesses gpio_chip.irq, which is available only
if CONFIG_GPIOLIB_IRQCHIP=y, and uses APIs that are defined only if
CONFIG_IRQ_DOMAIN_HIERARCHY=y (irq_chip_*_parent() APIs).
On ARCH_RZG2L, CONFIG_IRQ_DOMAIN_HIERARCHY is selected anyway, e.g. by
CONFIG_ARM_GIC_V3, but CONFIG_GPIOLIB_IRQCHIP is not (it is on R-Car).
Make this explicit at the driver level for a clearer view of the
dependencies.
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20240215124112.2259103-2-claudiu.beznea.uj@bp.renesas.com
[geert: select GPIOLIB_IRQCHIP, too]
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Currently on irq_disable(), we are disabling gpio interrupt enable(ISEL).
That means the pin is just gpio input and not gpio input interrupt any
more. So, move configuring ISEL in rzg2l_gpio_child_to_parent_hwirq()/
rzg2l_gpio_irq_domain_free() so that the pin will be gpioint always even
during irq_disable().
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20240206135318.165426-1-biju.das.jz@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Configure GPIO interrupt as input mode. Also if the bootloader sets
gpio interrupt pin as function, override it as gpio.
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20240206135115.151218-2-biju.das.jz@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
The driver for stm32mp257 is missing the suspend callback in
struct dev_pm_ops.
Add the callback, using the common stm32_pinctrl_suspend()
function.
Signed-off-by: Antonio Borneo <antonio.borneo@foss.st.com>
Fixes: 619f8ca4a7 ("pinctrl: stm32: add stm32mp257 pinctrl support")
Link: https://lore.kernel.org/r/20240207104604.174843-1-antonio.borneo@foss.st.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
