kernel/linux.git/drivers/pwm/Makefile, branch v6.12.80

pwm: adp5585: Add Analog Devices ADP5585 support

2024-08-01T13:09:28+00:00

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 Reviewed-by: Frank Li Co-developed-by: Laurent Pinchart Signed-off-by: Laurent Pinchart Acked-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20240722121100.2855-5-laurent.pinchart@ideasonboard.com Signed-off-by: Lee Jones

pwm: Add GPIO PWM driver

2024-07-10T15:52:47+00:00

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 Co-developed-by: Stefan Wahren Signed-off-by: Stefan Wahren Co-developed-by: Linus Walleij Reviewed-by: Andy Shevchenko Signed-off-by: Linus Walleij Reviewed-by: Dhruva Gole Link: https://lore.kernel.org/r/20240604-pwm-gpio-v7-2-6b67cf60db92@linaro.org Signed-off-by: Uwe Kleine-König

pwm: Add driver for AXI PWM generator

2024-07-10T15:52:46+00:00

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 Signed-off-by: Sergiu Cuciurean Co-developed-by: David Lechner Signed-off-by: David Lechner Signed-off-by: Drew Fustini Acked-by: Nuno Sa Co-developed-by: Trevor Gamblin Signed-off-by: Trevor Gamblin Link: https://lore.kernel.org/r/20240605203507.1934434-3-tgamblin@baylibre.com Signed-off-by: Uwe Kleine-König

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

2024-04-26T19:29:17+00:00

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

pwm: dwc: split pci out of core driver

2023-10-13T08:07:17+00:00

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 Acked-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20230907161242.67190-2-ben.dooks@codethink.co.uk Signed-off-by: Uwe Kleine-König Signed-off-by: Thierry Reding

pwm: Add Renesas RZ/G2L MTU3a PWM driver

2023-06-23T13:46:29+00:00

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 Reviewed-by: Uwe Kleine-König Signed-off-by: Thierry Reding

pwm: add microchip soft ip corePWM driver

2023-06-23T13:43:23+00:00

Add a driver that supports the Microchip FPGA "soft" PWM IP core. Signed-off-by: Conor Dooley Reviewed-by: Uwe Kleine-König Signed-off-by: Thierry Reding

pwm: Add Apple PWM controller

2023-04-06T14:31:38+00:00

Adds the Apple PWM controller driver. Signed-off-by: Sasha Finkelstein Acked-by: Sven Peter Reviewed-by: Uwe Kleine-König Signed-off-by: Thierry Reding

pwm: Add clock based PWM output driver

2022-07-29T11:41:18+00:00

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 Signed-off-by: Nikita Travkin Signed-off-by: Thierry Reding

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

2022-04-22T16:34:24+00:00

Add Sunplus SoC SP7021 PWM Driver Signed-off-by: Hammer Hsieh Signed-off-by: Thierry Reding