pwm: stmpe: Allow to compile as a module

pwm-stmpe is the only driver that cannot be built as a module. Add the
necessary boilerplate to also make this driver modular.

Signed-off-by: Uwe Kleine-Kön

pwm: stmpe: Allow to compile as a module

pwm-stmpe is the only driver that cannot be built as a module. Add the
necessary boilerplate to also make this driver modular.

Signed-off-by: Uwe Kleine-König <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Uwe Kleine-König <[email protected]>

show more ...

pwm: Strengthen dependency for PWM_SIFIVE

Back when the sifive pwm driver was added there was no symbol for sifive
SoCs yet. Today there is ARCH_SIFIVE however. Let PWM_SIFIVE depend on
that to ensu

pwm: Strengthen dependency for PWM_SIFIVE

Back when the sifive pwm driver was added there was no symbol for sifive
SoCs yet. Today there is ARCH_SIFIVE however. Let PWM_SIFIVE depend on
that to ensure the driver is only build for platforms where there is a
chance that the hardware is available.

Signed-off-by: Uwe Kleine-König <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Uwe Kleine-König <[email protected]>

show more ...

pwm: sophgo: add driver for Sophgo SG2042 PWM

Add a PWM driver for PWM controller in Sophgo SG2042 SoC.

Signed-off-by: Sean Young <[email protected]>
Signed-off-by: Chen Wang <[email protected]>

pwm: sophgo: add driver for Sophgo SG2042 PWM

Add a PWM driver for PWM controller in Sophgo SG2042 SoC.

Signed-off-by: Sean Young <[email protected]>
Signed-off-by: Chen Wang <[email protected]>
Link: https://lore.kernel.org/r/ae8ea1bf0bb0a09336cd8b7f627a994630524bba.1738737617.git.unicorn_wang@outlook.com
[ukleinek: Drop unneeded reset_control_assert() from error path]
Signed-off-by: Uwe Kleine-König <[email protected]>

show more ...

pwm: adp5585: Add Analog Devices ADP5585 support

The ADP5585 is a 10/11 input/output port expander with a built in keypad
matrix decoder, programmable logic, reset generator, and PWM generator.
This

pwm: adp5585: Add Analog Devices ADP5585 support

The ADP5585 is a 10/11 input/output port expander with a built in keypad
matrix decoder, programmable logic, reset generator, and PWM generator.
This driver supports the PWM function using the platform device
registered by the core MFD driver.

The driver is derived from an initial implementation from NXP, available
in commit 113113742208 ("MLK-25922-1 pwm: adp5585: add adp5585 PWM
support") in their BSP kernel tree. It has been extensively rewritten.

Signed-off-by: Clark Wang <[email protected]>
Reviewed-by: Frank Li <[email protected]>
Co-developed-by: Laurent Pinchart <[email protected]>
Signed-off-by: Laurent Pinchart <[email protected]>
Acked-by: Uwe Kleine-König <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Lee Jones <[email protected]>

show more ...

pwm: Add GPIO PWM driver

Add a software PWM which toggles a GPIO from a high-resolution timer.

This will naturally not be as accurate or as efficient as a hardware
PWM, but it is useful in some cas

pwm: Add GPIO PWM driver

Add a software PWM which toggles a GPIO from a high-resolution timer.

This will naturally not be as accurate or as efficient as a hardware
PWM, but it is useful in some cases. I have for example used it for
evaluating LED brightness handling (via leds-pwm) on a board where the
LED was just hooked up to a GPIO, and for a simple verification of the
timer frequency on another platform.

Since high-resolution timers are used, sleeping GPIO chips are not
supported and are rejected in the probe function.

Signed-off-by: Vincent Whitchurch <[email protected]>
Co-developed-by: Stefan Wahren <[email protected]>
Signed-off-by: Stefan Wahren <[email protected]>
Co-developed-by: Linus Walleij <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
Reviewed-by: Dhruva Gole <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Uwe Kleine-König <[email protected]>

show more ...

pwm: Add driver for AXI PWM generator

Add support for the Analog Devices AXI PWM Generator. This device is an
FPGA-implemented peripheral used as PWM signal generator and can be
interfaced with AXI4

pwm: Add driver for AXI PWM generator

Add support for the Analog Devices AXI PWM Generator. This device is an
FPGA-implemented peripheral used as PWM signal generator and can be
interfaced with AXI4. The register map of this peripheral makes it
possible to configure the period and duty cycle of the output signal.

Link: https://analogdevicesinc.github.io/hdl/library/axi_pwm_gen/index.html
Co-developed-by: Sergiu Cuciurean <[email protected]>
Signed-off-by: Sergiu Cuciurean <[email protected]>
Co-developed-by: David Lechner <[email protected]>
Signed-off-by: David Lechner <[email protected]>
Signed-off-by: Drew Fustini <[email protected]>
Acked-by: Nuno Sa <[email protected]>
Co-developed-by: Trevor Gamblin <[email protected]>
Signed-off-by: Trevor Gamblin <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Uwe Kleine-König <[email protected]>

show more ...

pwm: Move contents of sysfs.c into core.c

With the upcoming restructuring having all in a single file simplifies
things a bit. The relevant and somewhat visible changes are:

- Some dropped prototy

pwm: Move contents of sysfs.c into core.c

With the upcoming restructuring having all in a single file simplifies
things a bit. The relevant and somewhat visible changes are:

- Some dropped prototypes from include/linux/pwm.h that were only
necessary that core.c has a declaration of the symbols defined in
sysfs.c. The respective functions are static now.

- The pwm class now also exists if CONFIG_SYSFS isn't enabled. Having
CONFIG_SYSFS is not very relevant today, but even without it the
class and device stuff still provides lifetime tracking.

- Both files had an initcall, these are merged into a single one now.
Instead of a big #ifdef block for CONFIG_DEBUG_FS, a single
if (IS_ENABLED(CONFIG_DEBUG_FS)) is used now. This increases compile
coverage a bit and is a tad nicer on the eyes.

Link: https://lore.kernel.org/r/9e2d39a5280d7dda5bfc6682a8aef510148635b2.1710670958.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <[email protected]>

show more ...

pwm: dwc: split pci out of core driver

Moving towards adding non-pci support for the driver, move the pci
parts out of the core into their own module. This is partly due to
the module_driver() code

pwm: dwc: split pci out of core driver

Moving towards adding non-pci support for the driver, move the pci
parts out of the core into their own module. This is partly due to
the module_driver() code only being allowed once in a module and also
to avoid a number of #ifdef if we build a single file in a system
without pci support.

Signed-off-by: Ben Dooks <[email protected]>
Acked-by: Uwe Kleine-König <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Uwe Kleine-König <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>

show more ...

pwm: crc: Allow compilation as module and with COMPILE_TEST

The driver compiles just fine as a module. The parent driver's Kconfig
symbol already depends on X86 || COMPILE_TEST, so X86 can just be
d

pwm: crc: Allow compilation as module and with COMPILE_TEST

The driver compiles just fine as a module. The parent driver's Kconfig
symbol already depends on X86 || COMPILE_TEST, so X86 can just be
dropped from the dependencies allowing compilation on other platforms
than x86.

Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Linus Walleij <[email protected]>
Signed-off-by: Uwe Kleine-König <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>

show more ...

pwm: microchip-core: Convert SOC_MICROCHIP_POLARFIRE to ARCH_MICROCHIP_POLARFIRE

As part of converting RISC-V SOC_FOO symbols to ARCH_FOO to match the
use of such symbols on other architectures, con

pwm: microchip-core: Convert SOC_MICROCHIP_POLARFIRE to ARCH_MICROCHIP_POLARFIRE

As part of converting RISC-V SOC_FOO symbols to ARCH_FOO to match the
use of such symbols on other architectures, convert the Microchip FPGA
PWM driver to use the new symbol.

Signed-off-by: Conor Dooley <[email protected]>
Acked-by: Uwe Kleine-König <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>

show more ...

mfd: rz-mtu3: Link time dependencies

The new set of drivers for RZ/G2L MTU3a tries to enable compile-testing the
individual client drivers even when the MFD portion is disabled but gets it
wrong, ca

mfd: rz-mtu3: Link time dependencies

The new set of drivers for RZ/G2L MTU3a tries to enable compile-testing the
individual client drivers even when the MFD portion is disabled but gets it
wrong, causing a link failure when the core is in a loadable module but the
other drivers are built-in:

x86_64-linux-ld: drivers/pwm/pwm-rz-mtu3.o: in function `rz_mtu3_pwm_apply':
pwm-rz-mtu3.c:(.text+0x4bf): undefined reference to `rz_mtu3_8bit_ch_write'
x86_64-linux-ld: pwm-rz-mtu3.c:(.text+0x509): undefined reference to `rz_mtu3_disable'

arm-linux-gnueabi-ld: drivers/counter/rz-mtu3-cnt.o: in function `rz_mtu3_cascade_counts_enable_get':
rz-mtu3-cnt.c:(.text+0xbec): undefined reference to `rz_mtu3_shared_reg_read'

It seems better not to add the extra complexity here but instead just use
a normal hard dependency, so remove the #else portion in the header along
with the "|| COMPILE_TEST". This could also be fixed by having slightly more
elaborate Kconfig dependencies or using the cursed 'IS_REACHABLE()' helper,
but in practice it's already possible to compile-test all these drivers
by enabling the mtd portion.

Fixes: 254d3a727421c ("pwm: Add Renesas RZ/G2L MTU3a PWM driver")
Fixes: 0be8907359df4 ("counter: Add Renesas RZ/G2L MTU3a counter driver")
Fixes: 654c293e1687b ("mfd: Add Renesas RZ/G2L MTU3a core driver")
Signed-off-by: Arnd Bergmann <[email protected]>
Acked-by: Thierry Reding <[email protected]>
Reviewed-by: Biju Das <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Lee Jones <[email protected]>

show more ...

pwm: Add Renesas RZ/G2L MTU3a PWM driver

The RZ/G2L Multi-Function Timer Pulse Unit 3 (a.k.a MTU3a) uses
one counter and two match components to configure duty_cycle
and period to generate PWM outpu

pwm: Add Renesas RZ/G2L MTU3a PWM driver

The RZ/G2L Multi-Function Timer Pulse Unit 3 (a.k.a MTU3a) uses
one counter and two match components to configure duty_cycle
and period to generate PWM output waveform.

Add basic support for RZ/G2L MTU3a PWM driver by creating separate
PWM channels for each IOs.

Signed-off-by: Biju Das <[email protected]>
Reviewed-by: Uwe Kleine-König <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>

show more ...

pwm: add microchip soft ip corePWM driver

Add a driver that supports the Microchip FPGA "soft" PWM IP core.

Signed-off-by: Conor Dooley <[email protected]>
Reviewed-by: Uwe Kleine-König <u

pwm: add microchip soft ip corePWM driver

Add a driver that supports the Microchip FPGA "soft" PWM IP core.

Signed-off-by: Conor Dooley <[email protected]>
Reviewed-by: Uwe Kleine-König <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>

show more ...

pwm: Add Apple PWM controller

Adds the Apple PWM controller driver.

Signed-off-by: Sasha Finkelstein <[email protected]>
Acked-by: Sven Peter <[email protected]>
Reviewed-by: Uwe Kleine-König

pwm: Add Apple PWM controller

Adds the Apple PWM controller driver.

Signed-off-by: Sasha Finkelstein <[email protected]>
Acked-by: Sven Peter <[email protected]>
Reviewed-by: Uwe Kleine-König <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>

show more ...

pwm: pxa: Enable for MMP platform

The PXA168, which is part of the MMP platform, also uses this driver.

Signed-off-by: Doug Brown <[email protected]>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pe

pwm: pxa: Enable for MMP platform

The PXA168, which is part of the MMP platform, also uses this driver.

Signed-off-by: Doug Brown <[email protected]>
Acked-by: Uwe Kleine-König <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Uwe Kleine-König <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>

show more ...

pwm: jz4740: Depend on MACH_INGENIC instead of MIPS

The MACH_INGENIC Kconfig option will be selected when building a kernel
targeting Ingenic SoCs, but also when compiling a generic MIPS kernel
that

pwm: jz4740: Depend on MACH_INGENIC instead of MIPS

The MACH_INGENIC Kconfig option will be selected when building a kernel
targeting Ingenic SoCs, but also when compiling a generic MIPS kernel
that happens to support Ingenic SoCs.

Therefore, if MACH_INGENIC is not set, we know that we're not even
trying to build a generic kernel that supports these SoCs, and we can
hide the options to compile the SoC-specific drivers.

Signed-off-by: Paul Cercueil <[email protected]>
Acked-by: Uwe Kleine-König <[email protected]>
Reviewed-by: Philippe Mathieu-Daudé <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>

show more ...

pwm: jz4740: Force dependency on Device Tree

Ingenic SoCs all require CONFIG_OF, so there is no case where we want to
use this driver without CONFIG_OF.

Signed-off-by: Paul Cercueil <paul@crapouill

pwm: jz4740: Force dependency on Device Tree

Ingenic SoCs all require CONFIG_OF, so there is no case where we want to
use this driver without CONFIG_OF.

Signed-off-by: Paul Cercueil <[email protected]>
Acked-by: Uwe Kleine-König <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>

show more ...

pwm: Add clock based PWM output driver

Some systems have clocks exposed to external devices. If the clock
controller supports duty-cycle configuration, such clocks can be used as
pwm outputs. In fac

pwm: Add clock based PWM output driver

Some systems have clocks exposed to external devices. If the clock
controller supports duty-cycle configuration, such clocks can be used as
pwm outputs. In fact PWM and CLK subsystems are interfaced with in a
similar way and an "opposite" driver already exists (clk-pwm). Add a
driver that would enable pwm devices to be used via clk subsystem.

Acked-by: Uwe Kleine-König <[email protected]>
Signed-off-by: Nikita Travkin <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>

show more ...

pwm: sunplus-pwm: Add Sunplus SoC SP7021 PWM Driver

Add Sunplus SoC SP7021 PWM Driver

Signed-off-by: Hammer Hsieh <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>

pwm: Add support for Xilinx AXI Timer

This adds PWM support for Xilinx LogiCORE IP AXI soft timers commonly
found on Xilinx FPGAs. At the moment clock control is very basic: we
just enable the clock

pwm: Add support for Xilinx AXI Timer

This adds PWM support for Xilinx LogiCORE IP AXI soft timers commonly
found on Xilinx FPGAs. At the moment clock control is very basic: we
just enable the clock during probe and pin the frequency. In the future,
someone could add support for disabling the clock when not in use.

Some common code has been specially demarcated. While currently only
used by the PWM driver, it is anticipated that it may be split off in
the future to be used by the timer driver as well.

This driver was written with reference to Xilinx DS764 for v1.03.a [1].

[1] https://www.xilinx.com/support/documentation/ip_documentation/axi_timer/v1_03_a/axi_timer_ds764.pdf

Signed-off-by: Sean Anderson <[email protected]>
Acked-by: Michal Simek <[email protected]>
Reviewed-by: Uwe Kleine-König <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>

show more ...

pwm: samsung: Describe driver in Kconfig

Describe better which driver applies to which SoC, to make configuring
kernel for Samsung SoC easier.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowsk

pwm: samsung: Describe driver in Kconfig

Describe better which driver applies to which SoC, to make configuring
kernel for Samsung SoC easier.

Signed-off-by: Krzysztof Kozlowski <[email protected]>
Acked-by: Uwe Kleine-König <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>

show more ...

pwm: keembay: Improve compile coverage by allowing to enable on !ARM64

There are no arm64 specific constructs in this driver and it compiles
just fine with ARCH=arm.

Signed-off-by: Uwe Kleine-König

pwm: keembay: Improve compile coverage by allowing to enable on !ARM64

There are no arm64 specific constructs in this driver and it compiles
just fine with ARCH=arm.

Signed-off-by: Uwe Kleine-König <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>

show more ...

pwm: jz4740: Improve compile coverage by allowing to enable on !MIPS

There are no mips specific constructs in this driver and it compiles
just fine with ARCH=arm.

Signed-off-by: Uwe Kleine-König <u

pwm: jz4740: Improve compile coverage by allowing to enable on !MIPS

There are no mips specific constructs in this driver and it compiles
just fine with ARCH=arm.

Signed-off-by: Uwe Kleine-König <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>

show more ...

pwm: visconti: Add Toshiba Visconti SoC PWM support

Add driver for the PWM controller on Toshiba Visconti ARM SoC.

Signed-off-by: Nobuhiro Iwamatsu <[email protected]>
Reviewed-by: U

pwm: visconti: Add Toshiba Visconti SoC PWM support

Add driver for the PWM controller on Toshiba Visconti ARM SoC.

Signed-off-by: Nobuhiro Iwamatsu <[email protected]>
Reviewed-by: Uwe Kleine-König <[email protected]>
[[email protected]: fix up a couple of checkpatch warnings]
Signed-off-by: Thierry Reding <[email protected]>

show more ...

pwm: Add Raspberry Pi Firmware based PWM bus

Adds support to control the PWM bus available in official Raspberry Pi
PoE HAT. Only RPi's co-processor has access to it, so commands have to
be sent thr

pwm: Add Raspberry Pi Firmware based PWM bus

Adds support to control the PWM bus available in official Raspberry Pi
PoE HAT. Only RPi's co-processor has access to it, so commands have to
be sent through RPi's firmware mailbox interface.

Signed-off-by: Nicolas Saenz Julienne <[email protected]>
Reviewed-by: Uwe Kleine-König <[email protected]>
Acked-by: Thierry Reding <[email protected]>

show more ...