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* Merge tag 'pwm/for-5.13-rc1' of ↵Linus Torvalds2021-05-051-0/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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() ...
| * pwm: visconti: Add Toshiba Visconti SoC PWM supportNobuhiro Iwamatsu2021-04-231-0/+1
| | | | | | | | | | | | | | | | | | Add driver for the PWM controller on Toshiba Visconti ARM SoC. Signed-off-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp> Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> [thierry.reding@gmail.com: fix up a couple of checkpatch warnings] Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* | Merge tag 'mfd-next-5.13' of ↵Linus Torvalds2021-04-291-0/+1
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 ...
| * | pwm: ntxec: Add driver for PWM function in Netronix ECJonathan Neuschäfer2021-03-101-0/+1
| |/ | | | | | | | | | | | | | | | | | | | | | | | | 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 <j.neuschaefer@gmx.net> Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Thierry Reding <thierry.reding@gmail.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
* / pwm: Add Raspberry Pi Firmware based PWM busNicolas Saenz Julienne2021-03-221-0/+1
|/ | | | | | | | | | 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 <nsaenzjulienne@suse.de> Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: Remove ZTE ZX driverArnd Bergmann2021-01-201-1/+0
| | | | | | | | | | The ZTE ZX platform is getting removed, so this driver is no longer needed. Cc: Jun Nie <jun.nie@linaro.org> Cc: Shawn Guo <shawnguo@kernel.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: Add PWM fan controller driver for LGM SoCRahul Tanwar2020-12-171-0/+1
| | | | | | | | | | | | 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 <rahul.tanwar@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com> Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: Add DesignWare PWM Controller DriverJarkko Nikula2020-12-171-0/+1
| | | | | | | | | | | | | | | 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) <balbi@kernel.org> Signed-off-by: Felipe Balbi (Intel) <balbi@kernel.org> Co-developed-by: Raymond Tan <raymond.tan@intel.com> Signed-off-by: Raymond Tan <raymond.tan@intel.com> Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: Add PWM driver for Intel Keem BayVijayakannan Ayyathurai2020-12-171-0/+1
| | | | | | | | | | | | | | The Intel Keem Bay SoC requires PWM support. Add the pwm-keembay driver to enable this. Signed-off-by: Lai, Poey Seng <poey.seng.lai@intel.com> Co-developed-by: Vineetha G. Jaya Kumaran <vineetha.g.jaya.kumaran@intel.com> Signed-off-by: Vineetha G. Jaya Kumaran <vineetha.g.jaya.kumaran@intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Co-developed-by: Vijayakannan Ayyathurai <vijayakannan.ayyathurai@intel.com> Signed-off-by: Vijayakannan Ayyathurai <vijayakannan.ayyathurai@intel.com> Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: Add support for sl28cpld PWM controllerMichael Walle2020-09-171-0/+1
| | | | | | | | | | | | | 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 <michael@walle.cc> Acked-by: Thierry Reding <thierry.reding@gmail.com> Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Lee Jones <lee.jones@linaro.org>
* pwm: remove pwm-puv3 driverMike Rapoport2020-07-011-1/+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 <rppt@linux.ibm.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Guenter Roeck <linux@roeck-us.net>
* pwm: Add support for Azoteq IQS620A PWM generatorJeff LaBundy2020-04-141-0/+1
| | | | | | | | | 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 <jeff@labundy.com> Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* bus/ti-pwmss: move TI PWMSS driver from PWM to bus subsystemDavid Lechner2019-10-171-1/+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 <david@lechnology.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* pwm: sprd: Add Spreadtrum PWM supportBaolin Wang2019-09-211-0/+1
| | | | | | | | | This patch adds the Spreadtrum PWM support, which provides maximum 4 channels. Signed-off-by: Neo Hou <neo.hou@unisoc.com> Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: sifive: Add a driver for SiFive SoC PWMYash Shah2019-06-251-0/+1
| | | | | | | | | | | Adds a PWM driver for PWM chip present in SiFive's HiFive Unleashed SoC. Signed-off-by: Wesley W. Terpstra <wesley@sifive.com> [Atish: Various fixes and code cleanup] Signed-off-by: Atish Patra <atish.patra@wdc.com> Signed-off-by: Yash Shah <yash.shah@sifive.com> Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: Add i.MX TPM PWM driver supportAnson Huang2019-05-091-0/+1
| | | | | | | | | | | | | | | i.MX7ULP has TPM(Low Power Timer/Pulse Width Modulation Module) inside, it can support multiple PWM channels, all the channels share same counter and period setting, but each channel can configure its duty and polarity independently. There are several TPM modules in i.MX7ULP, the number of channels in TPM modules are different, it can be read from each TPM module's PARAM register. Signed-off-by: Anson Huang <Anson.Huang@nxp.com> Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: imx: Split into two driversUwe Kleine-König2019-01-161-1/+2
| | | | | | | | | | | | | The two PWM implementations called v1 (for i.MX1 and i.MX21) and v2 (for i.MX27 and later) have nothing in common apart from needing two clocks named "per" and "ipg" and being integrated in a SoC named i.MX. So split the file containing the two disjunct drivers into two files and two complete separate drivers. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> [thierry.reding@gmail.com: fix a modular build issue] Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: remove pwm-bfin driverArnd Bergmann2018-03-261-1/+0
| | | | | | | | | The blackfin architecture is getting removed, so this driver is now obsolete as well. Acked-by: Thierry Reding <thierry.reding@gmail.com> Acked-by: Aaron Wu <aaron.wu@analog.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* License cleanup: add SPDX GPL-2.0 license identifier to files with no licenseGreg Kroah-Hartman2017-11-021-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Merge tag 'pwm/for-4.14-rc1' of ↵Linus Torvalds2017-09-111-0/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm Pull pwm updates from Thierry Reding: "The changes for this release include a new driver for the PWM controller found on SoCs of the ZTX ZX family. Support for an old SH-Mobile SoC has been dropped and the Rockchip and MediaTek drivers gain support for more generations. Other than that there are a bunch of coding style fixes, minor bug fixes and cleanup as well as documentation patches" * tag 'pwm/for-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: (32 commits) pwm: pwm-samsung: fix suspend/resume support pwm: samsung: Remove redundant checks from pwm_samsung_config() pwm: mediatek: Disable clock on PWM configuration failure dt-bindings: pwm: Add MT2712/MT7622 information pwm: mediatek: Fix clock control issue pwm: mediatek: Fix PWM source clock selection pwm: mediatek: Fix Kconfig description pwm: tegra: Explicitly request exclusive reset control pwm: hibvt: Explicitly request exclusive reset control pwm: tiehrpwm: Set driver data before runtime PM enable pwm: tiehrpwm: Miscellaneous coding style fixups pwm: tiecap: Set driver data before runtime PM enable pwm: tiecap: Miscellaneous coding style fixups dt-bindings: pwm: tiecap: Add TI 66AK2G SoC specific compatible pwm: tiehrpwm: fix clock imbalance in probe error path pwm: tiehrpwm: Fix runtime PM imbalance at unbind pwm: Kconfig: Enable pwm-tiecap to be built for Keystone pwm: Add ZTE ZX PWM device driver dt-bindings: pwm: Add bindings doc for ZTE ZX PWM controller pwm: bcm2835: Support for polarity setting via DT ...
| * pwm: Add ZTE ZX PWM device driverShawn Guo2017-08-211-0/+1
| | | | | | | | | | | | | | | | | | | | | | It adds PWM device driver for ZTE ZX family SoCs. The PWM controller supports 4 devices with polarity configuration. The driver has been tested with pwm-regulator support to scale core voltage via cpufreq. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* | pwm: Add STM32 LPTimer PWM driverFabrice Gasnier2017-09-041-0/+1
|/ | | | | | | | | Add support for single PWM channel on Low-Power Timer, that can be found on some STM32 platforms. Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com> Acked-by: Thierry Reding <thierry.reding@gmail.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
* pwm: Add MediaTek PWM supportJohn Crispin2017-04-061-0/+1
| | | | | | | | | | | | | This patch adds support for the PWM core found on current ARM base SoCs made by MediaTek. This IP core supports 5 channels and has 2 operational modes. There is the old mode, which is a classical PWM and the new mode which allows the user to define bitmasks that get clocked out on the pins. As the subsystem currently only supports PWM cores with the "old" mode, we can safely ignore the "new" mode for now. Signed-off-by: John Crispin <john@phrozen.org> [thierry.reding@gmail.com: minor cleanups] Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: Add driver for STM32 plaftormBenjamin Gaignard2017-01-251-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This driver adds support for PWM driver on STM32 platform. The SoC have multiple instances of the hardware IP and each of them could have small differences: number of channels, complementary output, auto reload register size... version 9: - fix commit message header - remove one space MODULE_ALIAS version 8: - fix comments done by Thierry on version 7 version 6: - change st,breakinput parameter to make it usuable for stm32f7 too. version 4: - detect at probe time hardware capabilities - fix comments done on v2 and v3 - use PWM atomic ops version 2: - only keep one comptatible - use DT parameters to discover hardware block configuration Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
* pwm: Add PWM driver for HiSilicon BVT SOCsyuanjian2016-11-291-0/+1
| | | | | | | | | | | Add PWM driver for the PWM controller found on HiSilicon BVT SoCs such as Hi3519V100, Hi3516CV300, etc. The PWM controller is primarily in charge of controlling the P-Iris lens. Reviewed-by: Jiancheng Xue <xuejiancheng@hisilicon.com> Signed-off-by: Jian Yuan <yuanjian12@hisilicon.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: Add support for Meson PWM ControllerNeil Armstrong2016-09-081-0/+1
| | | | | | | | | | Add support for the PWM controller found in the Amlogic SoCs. This driver supports the Meson8b and GXBB SoCs. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Tested-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: Add ChromeOS EC PWM driverBrian Norris2016-07-251-0/+1
| | | | | | | | | | | | | | | | | | | Use the new ChromeOS EC EC_CMD_PWM_{GET,SET}_DUTY commands to control one or more PWMs attached to the Embedded Controller. Because the EC allows us to modify the duty cycle (as a percentage, where U16_MAX is 100%) but not the period, we assign the period a fixed value of EC_PWM_MAX_DUTY and reject all attempts to change it. This driver supports only device tree at the moment, because that provides a very flexible way of describing the relationship between PWMs and their consumer devices (e.g., backlight). On a non-DT system, we'll probably want to use the non-GENERIC addressing (i.e., we'll need to make special device instances that will use EC_PWM_TYPE_KB_LIGHT or EC_PWM_TYPE_DISPLAY_LIGHT), as well as the relatively inflexible pwm_lookup infrastructure for matching devices. Defer that work for now. Signed-off-by: Brian Norris <briannorris@chromium.org> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: Add a driver for the STMPE PWMLinus Walleij2016-07-111-0/+1
| | | | | | | | | | | | | | | This adds a driver for the PWM block found in chips of the STMPE 24xx series of multi-purpose I2C expanders. (I think STMPE means ST Microelectronics Multi-Purpose Expander.) This PWM was designed in accordance with Nokia specifications and is kind of weird and usually just switched between max and zero duty cycle. However it is indeed a PWM so it needs to live in the PWM subsystem. This PWM is mostly used for white LED backlight. Cc: Lee Jones <lee.jones@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: Add support for Broadcom iProc PWM controllerYendapally Reddy Dhananjaya Reddy2016-07-111-0/+1
| | | | | | | | | Add support for the PWM controller present in Broadcom's iProc family of SoCs. It has been tested on the Northstar+ bcm958625HR board. Signed-off-by: Yendapally Reddy Dhananjaya Reddy <yendapally.reddy@broadcom.com> [thierry.reding@gmail.com: bunch of coding style fixes, cleanups] Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: Add PWM driver for OMAP using dual-mode timersNeil Armstrong2015-12-161-0/+1
| | | | | | | | | | | | | | | | | | | Adds support for using a OMAP dual-mode timer with PWM capability as a Linux PWM device. The driver controls the timer by using the dmtimer API. Add a platform_data structure for each pwm-omap-dmtimer nodes containing the dmtimers functions in order to get driver not rely on platform specific functions. Cc: Grant Erickson <marathon96@gmail.com> Cc: NeilBrown <neilb@suse.de> Cc: Joachim Eastwood <manabian@gmail.com> Suggested-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Tony Lindgren <tony@atomide.com> [thierry.reding@gmail.com: coding style bikeshed, fix timer leak] Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: Add MediaTek display PWM driver supportYH Huang2015-10-061-0/+1
| | | | | | | | | | Add display PWM driver support to modify backlight for MT8173 and MT6595. The PWM has one channel to control the brightness of the display. When the (high_width / period) is closer to 1, the screen is brighter; otherwise, it is darker. Signed-off-by: YH Huang <yh.huang@mediatek.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: Add Broadcom BCM7038 PWM controller supportFlorian Fainelli2015-10-061-0/+1
| | | | | | | | | | Add support for the BCM7038-style PWM controller found in all BCM7xxx STB SoCs. This controller has a hardcoded 2 channels per controller, and cascades a variable frequency generator on top of a fixed frequency generator which offers a range of a 148ns period all the way to ~622ms periods. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: Add support for R-Car PWM TimerYoshihiro Shimoda2015-10-061-0/+1
| | | | | | | | | | This patch adds support for R-Car SoCs PWM Timer. The PWM timer of R-Car H2 has 7 channels. So, we can use the channels if we describe device tree nodes. Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: Add support for the Berlin PWM controllerAntoine Ténart2015-10-061-0/+1
| | | | | | | | | Add a PWM controller driver for the Marvell Berlin SoCs. This PWM controller has 4 channels. Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com> Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* Merge tag 'pwm/for-4.3-rc1' of ↵Linus Torvalds2015-09-091-0/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm Pull pwm updates from Thierry Reding: "This set of changes introduces the beginnings of a new API that's based around the concept of states that can be atomically applied. Drivers go to various lengths to implement something similar, which indicates that the core should really be providing the necessary framework. On top of that, there is a bit of cleanup as well as improved kerneldoc and integration into the device-drivers DocBook. Regarding drivers there is a new one for the NXP LPC18xx family of SoCs and a couple of fixes for existing drivers (pca9685, Broadcom Kona and Atmel HLCDC)" * tag 'pwm/for-4.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: ARM: at91: pwm: atmel-hlcdc: Add at91sam9n12 errata pwm: Add NXP LPC18xx PWM/SCT DT binding documentation pwm: NXP LPC18xx PWM/SCT driver pwm-pca9685: Support changing the output frequency pwm-pca9685: Fix several driver bugs pwm: kona: Modify settings application sequence pwm: pca9685: Drop owner assignment pwm: Add to device-drivers documentation pwm: Clean up kerneldoc pwm: Remove useless whitespace pwm: sysfs: Remove unnecessary padding pwm: sysfs: Properly convert from enum to string pwm: Make use of pwm_get_xxx() helpers where appropriate pwm: Add pwm_get_polarity() helper function pwm: Constify PWM device where possible pwm: Add the pwm_is_enabled() helper
| * pwm: NXP LPC18xx PWM/SCT driverAriel D'Alessandro2015-09-091-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This commit adds support for NXP LPC18xx PWM/SCT. NXP LPC SoCs family, which includes LPC18xx/LPC43xx, provides a State Configurable Timer (SCT) which can be configured as a Pulse Width Modulator. Other SoCs in that family may share the same hardware. The PWM supports a total of 16 channels, but only 15 can be simultaneously requested. There's only one period, global to all the channels, thus PWM driver will refuse setting different values to it, unless there's only one channel requested. Signed-off-by: Ariel D'Alessandro <ariel@vanguardiasur.com.ar> [thierry.reding@gmail.com: remove excessive padding of fields] Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* | pwm: crc: Add Crystalcove (CRC) PWM driverShobhit Kumar2015-07-211-0/+1
|/ | | | | | | | | | | | | | | | | | The Crystalcove PMIC provides three PWM signals and this driver exports one of them on the BYT platform which is used to control backlight for DSI panel. This is platform device implementation of the drivers/mfd cell device for CRC PMIC. CC: Samuel Ortiz <sameo@linux.intel.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Alexandre Courbot <gnurou@gmail.com> Cc: Thierry Reding <thierry.reding@gmail.com> Cc: Paul Bolle <pebolle@tiscali.nl> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Tested-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com> Reviewed-by: Varka Bhadram <varkabhadram@gmail.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
* pwm: Imagination Technologies PWM DAC driverNaidu Tellapati2015-01-301-0/+1
| | | | | | | | | | | | | | | The Pistachio SOC from Imagination Technologies includes a Pulse Width Modulation DAC which produces 1 to 4 digital bit-outputs which represent digital waveforms. These PWM outputs are primarily in charge of controlling backlight LED devices. Reviewed-by: Andrew Bresticker <abrestic@chromium.org> Signed-off-by: Naidu Tellapati <Naidu.Tellapati@imgtec.com> Signed-off-by: Sai Masarapu <Sai.Masarapu@imgtec.com> Signed-off-by: Ezequiel Garcia <ezequiel.garcia@imgtec.com> Reviewed-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com> [thierry.reding: fixup license header as discussed on list] Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: Add Allwinner SoC supportAlexandre Belloni2015-01-301-0/+1
| | | | | | | | | This adds a generic PWM framework driver for the PWM controller found on Allwinner SoCs. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: add support for atmel-hlcdc-pwm deviceBoris Brezillon2014-11-171-0/+1
| | | | | | | | | | | | | | | The HLCDC IP available in some Atmel SoCs (i.e. at91sam9x5, at91sam9n12 or sama5d3 families for instance) provides a PWM device. This driver add support for a PWM chip exposing a single PWM device (which will most likely be used to drive a backlight device). Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Tested-by: Anthony Harivel <anthony.harivel@emtrion.de> Tested-by: Ludovic Desroches <ludovic.desroches@atmel.com> Acked-by: Thierry Reding <thierry.reding@gmail.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: Add BCM2835 PWM driverBart Tanghe2014-11-171-0/+1
| | | | | | | | Add PWM driver for Broadcom BCM2835 processor (Raspberry Pi) Signed-off-by: Bart Tanghe <bart.tanghe@thomasmore.be> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: lpss: Properly split driver to partsAndy Shevchenko2014-08-231-0/+2
| | | | | | | | | | | | | | | | | | The driver consists of core, PCI, and platform parts. It would be better to split them into separate files. The platform driver is now called pwm-lpss-platform. Thus, previously set CONFIG_PWM_LPSS=m is not enough to build it. But we are on the safe side since it seems no one from outside Intel is using it for now. While here, move to use macros module_pci_driver() and module_platform_driver(). Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Alan Cox <alan@linux.intel.com> [thierry.reding: change select to depends on PWM_LPSS, cleanup] Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: sti: Add new driver for ST's PWM IPLee Jones2014-08-071-0/+1
| | | | | | | | | This driver supports all current STi platforms' PWM IPs. Signed-off-by: Ajit Pal Singh <ajitpal.singh@st.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> [thierry.reding: rename module to pwm-sti, fix build breakage] Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: add Rockchip SoC PWM supportBeniamino Galvani2014-07-111-0/+1
| | | | | | | | This commit adds a driver for the PWM controller found on Rockchip RK29, RK30 and RK31 SoCs. Signed-off-by: Beniamino Galvani <b.galvani@gmail.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: kona: Introduce Kona PWM controller supportTim Kryger2014-04-281-0/+1
| | | | | | | | | | Add support for the six-channel Kona PWM controller found on Broadcom mobile SoCs like bcm281xx. Signed-off-by: Tim Kryger <tim.kryger@linaro.org> Reviewed-by: Alex Elder <elder@linaro.org> Reviewed-by: Markus Mayer <markus.mayer@linaro.org> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: add support for Intel Low Power Subsystem PWMMika Westerberg2014-04-011-0/+1
| | | | | | | | | | | Add support for Intel Low Power I/O subsystem PWM controllers found on Intel BayTrail SoC. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Chew, Kean Ho <kean.ho.chew@intel.com> Signed-off-by: Chang, Rebecca Swee Fun <rebecca.swee.fun.chang@intel.com> Signed-off-by: Chew, Chiau Ee <chiau.ee.chew@intel.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: Add CLPS711X PWM supportAlexander Shiyan2014-03-181-0/+1
| | | | | | | | | Add a new driver for the ARM CLPS711X Pulse Width Modulator (PWM) interface. This CPU contain two 4-bit PWM outputs with constant period, based on CPU PLL frequency. PWM polarity is determined by hardware by power on reset. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: Add Freescale FTM PWM driver supportXiubo Li2014-03-181-0/+1
| | | | | | | | | | | | The FTM PWM device can be found on Vybrid VF610 Tower and Layerscape LS-1 SoCs. Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com> Signed-off-by: Alison Wang <b18965@freescale.com> Signed-off-by: Jingchang Lu <b35083@freescale.com> Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de> Reviewed-by: Yuan Yao <yao.yuan@freescale.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* Merge tag 'pwm/for-3.14-rc1' of ↵Linus Torvalds2014-01-271-0/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm Pull pwm changes from Thierry Reding: "The patches for this release cycle include various enhancements (device tree support, better compile coverage, ...) for existing drivers. There is a new driver for Atmel SoCs. Various drivers as well as the sysfs support received minor fixes and cleanups" * tag 'pwm/for-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: pwm: tiecap: Remove duplicate put_sync call pwm: tiehrpwm: use dev_err() instead of pr_err() pwm: pxa: remove unnecessary space before tabs pwm: ep93xx: split module author names pwm: use seq_puts() instead of seq_printf() pwm: atmel-pwm: Do not unprepare clock after successful registration of: Add Atmel PWM controller device tree binding pwm: atmel-pwm: Add Atmel PWM controller driver backlight: pwm_bl: Remove error message upon devm_kzalloc() failure pwm: pca9685: depends on I2C rather than REGMAP_I2C pwm: renesas-tpu: Enable driver compilation with COMPILE_TEST pwm: jz4740: Use devm_clk_get() pwm: jz4740: Pass device to clk_get() pwm: sysfs: Convert to use ATTRIBUTE_GROUPS macro pwm: pxa: Add device tree support
| * pwm: atmel-pwm: Add Atmel PWM controller driverBo Shen2013-12-171-0/+1
| | | | | | | | | | | | | | | | | | | | Add a PWM framework driver for the PWM controller found on Atmel SoCs. Signed-off-by: Bo Shen <voice.shen@atmel.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> [thierry.reding: coding style and other minor cleanups] Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-16 16:14:19 +0100