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2024-08-01pwm: adp5585: Add Analog Devices ADP5585 supportClark Wang1-0/+7
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]>
2024-07-10pwm: Add GPIO PWM driverVincent Whitchurch1-0/+11
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]>
2024-07-10pwm: Add driver for AXI PWM generatorDrew Fustini1-0/+13
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]>
2024-04-26pwm: Move contents of sysfs.c into core.cUwe Kleine-König1-4/+0
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]>
2023-10-13pwm: dwc: split pci out of core driverBen Dooks1-2/+12
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]>
2023-10-13pwm: crc: Allow compilation as module and with COMPILE_TESTUwe Kleine-König1-2/+2
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]>
2023-10-06pwm: microchip-core: Convert SOC_MICROCHIP_POLARFIRE to ARCH_MICROCHIP_POLARFIREConor Dooley1-1/+1
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]>
2023-08-18mfd: rz-mtu3: Link time dependenciesArnd Bergmann1-1/+1
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]>
2023-06-23pwm: Add Renesas RZ/G2L MTU3a PWM driverBiju Das1-0/+11
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]>
2023-06-23pwm: add microchip soft ip corePWM driverConor Dooley1-0/+10
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]>
2023-04-06pwm: Add Apple PWM controllerSasha Finkelstein1-0/+12
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]>
2022-12-06pwm: pxa: Enable for MMP platformDoug Brown1-1/+1
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]>
2022-11-29pwm: jz4740: Depend on MACH_INGENIC instead of MIPSPaul Cercueil1-1/+1
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]>
2022-11-29pwm: jz4740: Force dependency on Device TreePaul Cercueil1-1/+1
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]>
2022-07-29pwm: Add clock based PWM output driverNikita Travkin1-0/+10
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]>
2022-04-22pwm: sunplus-pwm: Add Sunplus SoC SP7021 PWM DriverHammer Hsieh1-0/+11
Add Sunplus SoC SP7021 PWM Driver Signed-off-by: Hammer Hsieh <[email protected]> Signed-off-by: Thierry Reding <[email protected]>
2022-04-22pwm: Add support for Xilinx AXI TimerSean Anderson1-0/+14
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]>
2021-11-05pwm: samsung: Describe driver in KconfigKrzysztof Kozlowski1-1/+3
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]>
2021-09-02pwm: keembay: Improve compile coverage by allowing to enable on !ARM64Uwe Kleine-König1-1/+2
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]>
2021-09-02pwm: jz4740: Improve compile coverage by allowing to enable on !MIPSUwe Kleine-König1-1/+1
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]>
2021-05-05Merge tag 'pwm/for-5.13-rc1' of ↵Linus Torvalds1-0/+9
git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm Pull pwm updates from Thierry Reding: "This adds support for the PWM controller found on Toshiba Visconti SoCs and converts a couple of drivers to the atomic API. There's also a bunch of cleanups and minor fixes across the board" * tag 'pwm/for-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: (35 commits) pwm: Reword docs about pwm_apply_state() pwm: atmel: Improve duty cycle calculation in .apply() pwm: atmel: Fix duty cycle calculation in .get_state() pwm: visconti: Add Toshiba Visconti SoC PWM support dt-bindings: pwm: Add bindings for Toshiba Visconti PWM Controller arm64: dts: rockchip: Remove clock-names from PWM nodes ARM: dts: rockchip: Remove clock-names from PWM nodes dt-bindings: pwm: rockchip: Add more compatible strings dt-bindings: pwm: Convert pwm-rockchip.txt to YAML pwm: mediatek: Remove unused function pwm: pca9685: Improve runtime PM behavior pwm: pca9685: Support hardware readout pwm: pca9685: Switch to atomic API pwm: lpss: Don't modify HW state in .remove callback pwm: sti: Free resources only after pwmchip_remove() pwm: sti: Don't modify HW state in .remove callback pwm: lpc3200: Don't modify HW state in .remove callback pwm: lpc18xx-sct: Free resources only after pwmchip_remove() pwm: bcm-kona: Don't modify HW state in .remove callback pwm: bcm2835: Free resources only after pwmchip_remove() ...
2021-04-28Merge tag 'mfd-next-5.13' of ↵Linus Torvalds1-0/+8
git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd Pull MFD updates from Lee Jones: "Core Framework: - Add support for Software Nodes to MFD Core - Remove support for Device Properties from MFD Core - Use standard APIs in MFD Core New Drivers: - Add support for ROHM BD9576MUF and BD9573MUF PMICs - Add support for Netronix Embedded Controller, PWM and RTC - Add support for Actions Semi ATC260x PMICs and OnKey New Device Support: - Add support for DG1 PCIe Graphics Card to Intel PMT - Add support for ROHM BD71815 PMIC to ROHM BD71828 - Add support for Tolino Shine 2 HD to Netronix Embedded Controller - Add support for AX10 BMC Secure Updates to Intel M10 BMC Removed Device Support: - Remove Arizona Extcon support from MFD - Remove ST-E AB8500 Power Supply code from MFD - Remove AB3100 altogether New Functionality: - Add support for SMBus and I2C modes to Dialog DA9063 - Switch to using Software Nodes in Intel (various) New/converted Device Tree bindings: - rohm bd71815-pmic, rohm bd9576-pmic, netronix ntxec, actions atc260x, ricoh rn5t618, qcom pm8xxx - Fix-ups: - Fix error handling/path; intel_pmt - Simplify code; rohm-bd718x7, ab8500-core, intel-m10-bmc - Trivial clean-ups (reordering, spelling); rohm-generic, rn5t618, max8997 - Use correct data-type; db8500-prcmu - Remove superfluous code; lp87565, intel_quark_i2c_gpi, lpc_sch, twl - Use generic APIs/defines; lm3533-core, intel_quark_i2c_gpio - Regmap related fix-ups; intel-m10-bmc, sec-core - Reorder resource freeing during remove; intel_quark_i2c_gpio - Make table indexing more robust; intel_quark_i2c_gpio - Fix reference imbalances; arizona-irq - Staticify and (un)constify things; arizona-spi, stmpe, ene-kb3930, intel-lpss-acpi, intel-lpss-pci, atc260x-i2c, intel_quark_i2c_gpio Bug Fixes: - Fix incorrect (register) values; intel-m10-bmc - Kconfig related fixes; ABX500_CORE - Do not clear the Auto Reload Register; stm32-timers" * tag 'mfd-next-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (84 commits) mfd: intel-m10-bmc: Add support for MAX10 BMC Secure Updates Revert "mfd: max8997: Add of_compatible to Extcon and Charger mfd_cell" mfd: twl: Remove unused inline function twl4030charger_usb_en() dt-bindings: mfd: Convert pm8xxx bindings to yaml dt-bindings: mfd: Add compatible for pmk8350 rtc i2c: designware: Get rid of legacy platform data mfd: intel_quark_i2c_gpio: Convert I²C to use software nodes mfd: lpc_sch: Partially revert "Add support for Intel Quark X1000" mfd: arizona: Fix rumtime PM imbalance on error mfd: max8997: Replace 8998 with 8997 mfd: core: Use acpi_find_child_device() for child devices lookup mfd: intel_quark_i2c_gpio: Don't play dirty trick with const mfd: intel_quark_i2c_gpio: Enable MSI interrupt mfd: intel_quark_i2c_gpio: Reuse BAR definitions for MFD cell indexing mfd: ntxec: Support for EC in Tolino Shine 2 HD mfd: stm32-timers: Avoid clearing auto reload register mfd: intel_quark_i2c_gpio: Replace I²C speeds with descriptive definitions mfd: intel_quark_i2c_gpio: Remove unused struct device member mfd: intel_quark_i2c_gpio: Unregister resources in reversed order mfd: Kconfig: ABX500_CORE should depend on ARCH_U8500 ...
2021-04-23pwm: visconti: Add Toshiba Visconti SoC PWM supportNobuhiro Iwamatsu1-0/+9
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]>
2021-03-22pwm: Add Raspberry Pi Firmware based PWM busNicolas Saenz Julienne1-0/+9
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]>
2021-03-10pwm: ntxec: Add driver for PWM function in Netronix ECJonathan Neuschäfer1-0/+8
The Netronix EC provides a PWM output which is used for the backlight on some ebook readers. This patches adds a driver for the PWM output. The .get_state callback is not implemented, because the PWM state can't be read back from the hardware. Signed-off-by: Jonathan Neuschäfer <[email protected]> Reviewed-by: Uwe Kleine-König <[email protected]> Acked-by: Thierry Reding <[email protected]> Signed-off-by: Lee Jones <[email protected]>
2021-01-20pwm: Remove ZTE ZX driverArnd Bergmann1-10/+0
The ZTE ZX platform is getting removed, so this driver is no longer needed. Cc: Jun Nie <[email protected]> Cc: Shawn Guo <[email protected]> Signed-off-by: Arnd Bergmann <[email protected]> Signed-off-by: Thierry Reding <[email protected]>
2020-12-17pwm: lpss: Make compilable with COMPILE_TESTUwe Kleine-König1-3/+3
All used ACPI functions have dummy implementations, and there is no hard dependency on x86. Signed-off-by: Uwe Kleine-König <[email protected]> Signed-off-by: Thierry Reding <[email protected]>
2020-12-17pwm: Fix dependencies on HAS_IOMEMUwe Kleine-König1-7/+28
Drivers making use of IO remapping must depend on HAS_IOMEM. Reported-by: kernel test robot <[email protected]> Signed-off-by: Uwe Kleine-König <[email protected]> Signed-off-by: Thierry Reding <[email protected]>
2020-12-17pwm: Add PWM fan controller driver for LGM SoCRahul Tanwar1-0/+11
Intel Lightning Mountain(LGM) SoC contains a PWM fan controller. This PWM controller does not have any other consumer, it is a dedicated PWM controller for fan attached to the system. Add driver for this PWM fan controller. Signed-off-by: Rahul Tanwar <[email protected]> Reviewed-by: Andy Shevchenko <[email protected]> Reviewed-by: Uwe Kleine-König <[email protected]> Signed-off-by: Thierry Reding <[email protected]>
2020-12-17pwm: Add DesignWare PWM Controller DriverJarkko Nikula1-0/+9
Introduce driver for Synopsys DesignWare PWM Controller used on Intel Elkhart Lake. Initial implementation is done by Felipe Balbi while he was working at Intel with later changes from Raymond Tan and me. Co-developed-by: Felipe Balbi (Intel) <[email protected]> Signed-off-by: Felipe Balbi (Intel) <[email protected]> Co-developed-by: Raymond Tan <[email protected]> Signed-off-by: Raymond Tan <[email protected]> Signed-off-by: Jarkko Nikula <[email protected]> Signed-off-by: Thierry Reding <[email protected]>
2020-12-17pwm: Add PWM driver for Intel Keem BayVijayakannan Ayyathurai1-0/+9
The Intel Keem Bay SoC requires PWM support. Add the pwm-keembay driver to enable this. Signed-off-by: Lai, Poey Seng <[email protected]> Co-developed-by: Vineetha G. Jaya Kumaran <[email protected]> Signed-off-by: Vineetha G. Jaya Kumaran <[email protected]> Reviewed-by: Andy Shevchenko <[email protected]> Co-developed-by: Vijayakannan Ayyathurai <[email protected]> Signed-off-by: Vijayakannan Ayyathurai <[email protected]> Reviewed-by: Uwe Kleine-König <[email protected]> Signed-off-by: Thierry Reding <[email protected]>
2020-12-17pwm: atmel-tcb: Switch to new bindingAlexandre Belloni1-1/+2
The PWM is now a subnode of the used TCB. This is cleaner and it mainly allows to stop wasting TCB channels when only 2 or 4 PWMs are used. This also removes the atmel_tclib dependency Cc: Thierry Reding <[email protected]> Cc: [email protected] Signed-off-by: Alexandre Belloni <[email protected]> Signed-off-by: Thierry Reding <[email protected]>
2020-10-24Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/socLinus Torvalds1-1/+1
Pull ARM SoC platform updates from Olof Johansson: "SoC changes, a substantial part of this is cleanup of some of the older platforms that used to have a bunch of board files. In particular: - Remove non-DT i.MX platforms that haven't seen activity in years, it's time to remove them. - A bunch of cleanup and removal of platform data for TI/OMAP platforms, moving over to genpd for power/reset control (yay!) - Major cleanup of Samsung S3C24xx and S3C64xx platforms, moving them closer to multiplatform support (not quite there yet, but getting close). There are a few other changes too, smaller fixlets, etc. For new platform support, the primary ones are: - New SoC: Hisilicon SD5203, ARM926EJ-S platform. - Cpufreq support for i.MX7ULP" * tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (121 commits) ARM: mstar: Select MStar intc ARM: stm32: Replace HTTP links with HTTPS ones ARM: debug: add UART early console support for SD5203 ARM: hisi: add support for SD5203 SoC ARM: omap3: enable off mode automatically clk: imx: imx35: Remove mx35_clocks_init() clk: imx: imx31: Remove mx31_clocks_init() clk: imx: imx27: Remove mx27_clocks_init() ARM: imx: Remove unused definitions ARM: imx35: Retrieve the IIM base address from devicetree ARM: imx3: Retrieve the AVIC base address from devicetree ARM: imx3: Retrieve the CCM base address from devicetree ARM: imx31: Retrieve the IIM base address from devicetree ARM: imx27: Retrieve the CCM base address from devicetree ARM: imx27: Retrieve the SYSCTRL base address from devicetree ARM: s3c64xx: bring back notes from removed debug-macro.S ARM: s3c24xx: fix Wunused-variable warning on !MMU ARM: samsung: fix PM debug build with DEBUG_LL but !MMU MAINTAINERS: mark linux-samsung-soc list non-moderated ARM: imx: Remove remnant board file support pieces ...
2020-09-17pwm: Add support for sl28cpld PWM controllerMichael Walle1-0/+10
Add support for the PWM controller of the sl28cpld board management controller. This is part of a multi-function device driver. The controller has one PWM channel and can just generate four distinct frequencies. Signed-off-by: Michael Walle <[email protected]> Acked-by: Thierry Reding <[email protected]> Reviewed-by: Uwe Kleine-König <[email protected]> Signed-off-by: Lee Jones <[email protected]>
2020-08-19ARM: s5pv210: don't imply CONFIG_PLAT_SAMSUNGArnd Bergmann1-1/+1
The plat-samsung directory and mach-s5pv210 can be build completely independently, so split the two Kconfig symbols CONFIG_PLAT_SAMSUNG and CONFIG_ARCH_S5PV210. Signed-off-by: Arnd Bergmann <[email protected]> Acked-by: Ulf Hansson <[email protected]> Acked-by: Thierry Reding <[email protected]> Acked-by: Mark Brown <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Krzysztof Kozlowski <[email protected]>
2020-07-01pwm: remove pwm-puv3 driverMike Rapoport1-9/+0
The unicore32 port is removed from the kernel. There is no point to keep stale PWM driver for this architecture. Signed-off-by: Mike Rapoport <[email protected]> Acked-by: Arnd Bergmann <[email protected]> Acked-by: Guenter Roeck <[email protected]>
2020-06-02pwm: jz4740: Drop dependency on MACH_INGENICPaul Cercueil1-1/+1
Depending on MACH_INGENIC prevent us from creating a generic kernel that works on more than one MIPS board. Instead, we just depend on MIPS being set. Acked-by: Uwe Kleine-König <[email protected]> Signed-off-by: Paul Cercueil <[email protected]> Signed-off-by: Thierry Reding <[email protected]>
2020-04-14pwm: Add support for Azoteq IQS620A PWM generatorJeff LaBundy1-0/+10
This patch adds support for the Azoteq IQS620A, capable of generating a 1-kHz PWM output with duty cycle between ~0.4% and 100% (inclusive). Signed-off-by: Jeff LaBundy <[email protected]> Reviewed-by: Uwe Kleine-König <[email protected]> Signed-off-by: Thierry Reding <[email protected]>
2020-03-30pwm: jz4740: Obtain regmap from parent nodePaul Cercueil1-0/+1
The TCU registers are shared between a handful of drivers, accessing them through the same regmap. While this driver is devicetree-compatible, it is never (as of now) probed from devicetree, so this change does not introduce a ABI problem with current devicetree files. Signed-off-by: Paul Cercueil <[email protected]> Tested-by: Mathieu Malaterre <[email protected]> Tested-by: Artur Rojek <[email protected]> Signed-off-by: Thierry Reding <[email protected]>
2020-03-30pwm: jz4740: Use clocks from TCU driverPaul Cercueil1-0/+1
The ingenic-timer "TCU" driver provides us with clocks, that can be (un)gated, reparented or reclocked from devicetree, instead of having these settings hardcoded in this driver. The new code now uses a clk pointer per PWM (instead of a clk per pwm-chip before). So the pointer is stored in per-pwm data now. The calls to arch-specific timer code is replaced with standard clock API calls to start and stop each channel's clock. While this driver is devicetree-compatible, it is never (as of now) probed from devicetree, so this change does not introduce a ABI problem with current devicetree files. Signed-off-by: Paul Cercueil <[email protected]> Tested-by: Mathieu Malaterre <[email protected]> Tested-by: Artur Rojek <[email protected]> Signed-off-by: Thierry Reding <[email protected]>
2020-03-30pwm: Enable compile testing for some of driversKrzysztof Kozlowski1-22/+25
Some of the PWM drivers can be compile tested to increase build coverage. The Meson PWM driver requires COMMON_CLK dependency. Signed-off-by: Krzysztof Kozlowski <[email protected]> Acked-by: Florian Fainelli <[email protected]> # For Broadcoam Reviewed-by: Martin Blumenstingl <[email protected]> # For Meson Acked-by: Claudiu Beznea <[email protected]> # For Atmel Acked-by: Uwe Kleine-König <[email protected]> Signed-off-by: Thierry Reding <[email protected]>
2020-03-30pwm: Implement some checks for lowlevel driversUwe Kleine-König1-0/+9
There are some expectations which the callbacks provided by lowlevel drivers should fulfill. Implement checks that help driver authors to get these semantics right. As these have some overhead the checks can be disabled using a Kconfig setting. Signed-off-by: Uwe Kleine-König <[email protected]> Signed-off-by: Thierry Reding <[email protected]>
2020-01-20pwm: bcm2835: Allow building for ARCH_BRCMSTBFlorian Fainelli1-1/+1
BCM7211 is supported using ARCH_BRCMSTB and uses this PWM controller driver, make it possible to build it. Signed-off-by: Florian Fainelli <[email protected]> Acked-by: Uwe Kleine-König <[email protected]> Signed-off-by: Thierry Reding <[email protected]>
2020-01-20pwm: omap-dmtimer: Allow compiling with COMPILE_TESTUwe Kleine-König1-1/+2
The dependency on OMAP_DM_TIMER is only a runtime dependency. Also OMAP_DM_TIMER cannot be enabled without ARCH_OMAP being enabled. Signed-off-by: Uwe Kleine-König <[email protected]> Signed-off-by: Thierry Reding <[email protected]>
2020-01-08pwm: Fix minor Kconfig whitespace issuesKrzysztof Kozlowski1-2/+2
Remove double whitespace after "config" keyword. Signed-off-by: Krzysztof Kozlowski <[email protected]> Signed-off-by: Thierry Reding <[email protected]>
2019-10-17bus/ti-pwmss: move TI PWMSS driver from PWM to bus subsystemDavid Lechner1-9/+0
The TI PWMSS driver is a simple bus driver for providing power power management for the PWM peripherals on TI AM33xx SoCs, namely eCAP, eHRPWM and eQEP. The eQEP is a counter rather than a PWM, so it does not make sense to have the bus driver in the PWM subsystem since the PWMSS is not exclusive to PWM devices. Signed-off-by: David Lechner <[email protected]> Signed-off-by: Jonathan Cameron <[email protected]>
2019-09-27Merge tag 'pwm/for-5.4-rc1' of ↵Linus Torvalds1-1/+12
git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm Pull pwm updates from Thierry Reding: "Besides one new driver being added for the PWM controller found in various Spreadtrum SoCs, this series of changes brings a slew of, mostly minor, fixes and cleanups for existing drivers, as well as some enhancements to the core code. Lastly, Uwe is added to the PWM subsystem entry of the MAINTAINERS file, making official his role as a reviewer" * tag 'pwm/for-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: (34 commits) MAINTAINERS: Add myself as reviewer for the PWM subsystem MAINTAINERS: Add patchwork link for PWM entry MAINTAINERS: Add a selection of PWM related keywords to the PWM entry pwm: mediatek: Add MT7629 compatible string dt-bindings: pwm: Update bindings for MT7629 SoC pwm: mediatek: Update license and switch to SPDX tag pwm: mediatek: Use pwm_mediatek as common prefix pwm: mediatek: Allocate the clks array dynamically pwm: mediatek: Remove the has_clks field pwm: mediatek: Drop the check for of_device_get_match_data() pwm: atmel: Consolidate driver data initialization pwm: atmel: Remove unneeded check for match data pwm: atmel: Remove platform_device_id and use only dt bindings pwm: stm32-lp: Add check in case requested period cannot be achieved pwm: Ensure pwm_apply_state() doesn't modify the state argument pwm: fsl-ftm: Don't update the state for the caller of pwm_apply_state() pwm: sun4i: Don't update the state for the caller of pwm_apply_state() pwm: rockchip: Don't update the state for the caller of pwm_apply_state() pwm: Let pwm_get_state() return the last implemented state pwm: Introduce local struct pwm_chip in pwm_apply_state() ...
2019-09-21pwm: atmel: Remove platform_device_id and use only dt bindingsKamel Bouhara1-1/+1
Since commit 26202873bb51 ("avr32: remove support for AVR32 architecture") there is no more user of platform_device_id and we should only use dt bindings Signed-off-by: Kamel Bouhara <[email protected]> Acked-by: Alexandre Belloni <[email protected]> Acked-by: Claudiu Beznea <[email protected]> Acked-by: Uwe Kleine-König <[email protected]> Signed-off-by: Thierry Reding <[email protected]>
2019-09-21pwm: sprd: Add Spreadtrum PWM supportBaolin Wang1-0/+11
This patch adds the Spreadtrum PWM support, which provides maximum 4 channels. Signed-off-by: Neo Hou <[email protected]> Signed-off-by: Baolin Wang <[email protected]> Signed-off-by: Thierry Reding <[email protected]>
2019-09-02mfd / platform: cros_ec: Move cros-ec core driver out from MFDEnric Balletbo i Serra1-1/+1
Now, the ChromeOS EC core driver has nothing related to an MFD device, so move that driver from the MFD subsystem to the platform/chrome subsystem. Signed-off-by: Enric Balletbo i Serra <[email protected]> Acked-by: Andy Shevchenko <[email protected]> Acked-by: Thierry Reding <[email protected]> Acked-by: Mark Brown <[email protected]> Acked-by: Wolfram Sang <[email protected]> Acked-by: Neil Armstrong <[email protected]> Acked-by: Alexandre Belloni <[email protected]> Acked-by: Jonathan Cameron <[email protected]> Acked-by: Benjamin Tissoires <[email protected]> Acked-by: Dmitry Torokhov <[email protected]> Acked-by: Sebastian Reichel <[email protected]> Acked-by: Chanwoo Choi <[email protected]> Reviewed-by: Gwendal Grignou <[email protected]> Tested-by: Gwendal Grignou <[email protected]> Signed-off-by: Lee Jones <[email protected]>
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