summaryrefslogtreecommitdiffstats
path: root/drivers/pwm/Kconfig (follow)
Commit message (Collapse)AuthorAgeFilesLines
* Merge tag 'pwm/for-4.14-rc1' of ↵Linus Torvalds2017-09-111-2/+11
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: mediatek: Fix Kconfig descriptionZhi Mao2017-08-211-1/+1
| | | | | | | | | | | | | | | | | | Fix a copy/paste error that sneaked into the Kconfig description of the Mediatek PWM driver. Signed-off-by: Zhi Mao <zhi.mao@mediatek.com> Acked-by: John Crispin <john@phrozen.org> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * pwm: Kconfig: Enable pwm-tiecap to be built for KeystoneVignesh R2017-08-211-1/+1
| | | | | | | | | | | | | | | | | | 66AK2G SoC has ECAP subsystem that is used as pwm-backlight provider for display. Hence, enable pwm-tiecap driver to be built for Keystone architecture. Signed-off-by: Vignesh R <vigneshr@ti.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * pwm: Add ZTE ZX PWM device driverShawn Guo2017-08-211-0/+9
| | | | | | | | | | | | | | | | | | | | | | 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/+10
|/ | | | | | | | | 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/+9
| | | | | | | | | | | | | 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>
* Merge tag 'pwm/for-4.11-rc1' of ↵Linus Torvalds2017-03-011-1/+3
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm Pull pwm updates from Thierry Reding: "This set contains mostly fixes to existing drivers as well as cleanup of code that's not been in active use for a while" * tag 'pwm/for-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: (27 commits) acpi: lpss: call pwm_add_table() for BSW PWM device pwm: Try to load modules during pwm_get() pwm: Don't hold pwm_lookup_lock longer than necessary pwm: Make the PWM_POLARITY flag in DTB optional pwm: Print error messages with pr_err() instead of pr_debug() pwm: imx: Add polarity inversion support to i.MX's PWMv2 pwm: imx: doc: Update imx-pwm.txt documentation entry pwm: imx: Remove redundant i.MX PWMv2 code pwm: imx: Provide atomic PWM support for i.MX PWMv2 pwm: imx: Move PWMv2 wait for fifo slot code to a separate function pwm: imx: Move PWMv2 software reset code to a separate function pwm: imx: Rewrite v1 code to facilitate switch to atomic PWM pwm: imx: Add separate set of PWM ops for v1 and v2 pwm: imx: Remove ipg clock and enable per clock when required pwm: lpss: Add Intel Gemini Lake PCI ID pwm: lpss: Do not export board infos for different PWM types pwm: lpss: Avoid reconfiguring while UPDATE bit is still enabled pwm: lpss: Switch to new atomic API pwm: lpss: Allow duty cycle to be 0 pwm: lpss: Avoid potential overflow of base_unit ...
| * pwm: bcm-iproc: Update dependencies for compile-testScott Branden2017-01-191-1/+3
| | | | | | | | | | | | | | | | | | | | | | Add dependency on COMMON_CLK and allow COMPILE_TEST for broader compile coverage. Default to Y for IPROC SoCs. This allows the driver to simply be enabled by selecting PWM. Signed-off-by: Scott Branden <scott.branden@broadcom.com> Reviewed-by: Ray Jui <ray.jui@broadcom.com> [thierry.reding@gmail.com: reword commit message] Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* | pwm: Add driver for STM32 plaftormBenjamin Gaignard2017-01-251-0/+9
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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/+9
| | | | | | | | | | | 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/+9
| | | | | | | | | | 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/+7
| | | | | | | | | | | | | | | | | | | 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: rcar: Use ARCH_RENESASRyo Kodama2016-07-111-1/+1
| | | | | | | | | | | Replace ARCH_RCAR_GEN{1,2} with ARCH_RENESAS in order to support R-Car Gen3. Signed-off-by: Ryo Kodama <ryo.kodama.vz@renesas.com> Signed-off-by: Harunobu Kurokawa <harunobu.kurokawa.dn@renesas.com> Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: Add a driver for the STMPE PWMLinus Walleij2016-07-111-0/+7
| | | | | | | | | | | | | | | 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/+10
| | | | | | | | | 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: rcar: Depend on ARCH_RENESAS instead of ARCH_SHMOBILESimon Horman2016-03-231-1/+1
| | | | | | | | | | | This is part of an ongoing process to migrate from ARCH_SHMOBILE to ARCH_RENESAS the motivation for which being that RENESAS seems to be a more appropriate name than SHMOBILE for the majority of Renesas ARM based SoCs. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: add HAS_IOMEM dependency to PWM_FSL_FTMVegard Nossum2016-01-041-0/+1
| | | | | | | | | | | | | | | | | | | Ran into this on UML: drivers/built-in.o: In function `fsl_pwm_probe': linux/drivers/pwm/pwm-fsl-ftm.c:436: undefined reference to `devm_ioremap_resource' collect2: error: ld returned 1 exit status devm_ioremap_resource() is defined only when HAS_IOMEM is selected. Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com> Cc: Xiubo Li <Li.Xiubo@freescale.com> Cc: Alison Wang <b18965@freescale.com> Cc: Jingchang Lu <b35083@freescale.com> Cc: Sascha Hauer <s.hauer@pengutronix.de> Cc: Yuan Yao <yao.yuan@freescale.com> Cc: Thierry Reding <thierry.reding@gmail.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: Add PWM driver for OMAP using dual-mode timersNeil Armstrong2015-12-161-0/+9
| | | | | | | | | | | | | | | | | | | 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: lpss: Select core part automaticallyAndy Shevchenko2015-12-161-10/+5
| | | | | | | | | We have two users of core part right now. Let them to select core part automatically. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm-pca9685: enable ACPI device found on Galileo Gen2Andy Shevchenko2015-11-061-1/+1
| | | | | | | | | There is a chip connected to i2c bus on Intel Galileo Gen2 board. Enable it via ACPI ID INT3492. Cc: Thierry Reding <thierry.reding@gmail.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: Add MediaTek display PWM driver supportYH Huang2015-10-061-0/+11
| | | | | | | | | | 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: tipwmss: Enable on TI DRA7x and AM437xVignesh R2015-10-061-3/+3
| | | | | | | | | | | TIPWMSS is present on TI's DRA7x and AM437x SoCs. Enable its usage. Instead of adding each SoC individually, use the more generic symbol ARCH_OMAP2PLUS instead. Signed-off-by: Vignesh R <vigneshr@ti.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: Add Broadcom BCM7038 PWM controller supportFlorian Fainelli2015-10-061-0/+10
| | | | | | | | | | 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/+11
| | | | | | | | | | 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/+9
| | | | | | | | | 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/+12
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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/+7
|/ | | | | | | | | | | | | | | | | | 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/+13
| | | | | | | | | | | | | | | 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/+10
| | | | | | | | | 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: atmel-hlcdc: Depend on HAVE_CLKThierry Reding2015-01-301-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The include/linux/clk.h header defines dummy implementations for the various clk_*() functions if HAVE_CLK is not selected to improve build coverage in randconfig builds. The dummy implementation of clk_get_rate() returns 0, which causes the Atmel HLCDC PWM driver's atmel_hlcdc_pwm_config() implementation to end up calling: do_div(clk_period_ns, 0) On x86, do_div(n, base) will end up evaluating to this: n >>= ilog2(base) with base = 0, the implementation of ilog2() will call ____ilog2_NaN(), which is purposely undefined and results in a linker failure: ERROR: "____ilog2_NaN" [drivers/pwm/pwm-atmel-hlcdc.ko] undefined! The implementation of do_div() checks that base is a power of 2 before calling ilog2(). The compiler doesn't optimize this away, presumably because is_power_of_2() is an inline function and the compiler doesn't or can't inspect it closely enough. ilog2() being a macro it still ends up generating the ____ilog2_NaN() because of the constant 0. The root of the problem is that the driver really should be checking before possibly dividing by zero. That should eventually be fixed, but for now just assume that the clock runs at a sensible frequency when available. Reported-by: Jim Davis <jim.epost@gmail.com> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: samsung: Allow Samsung PWM driver to be enabled on Exynos7Abhilash Kesavan2014-11-171-1/+1
| | | | | | | | To re-use the existing PWM driver for 64-bit ARM based Exynos7 SoC, make the driver depend on ARCH_EXYNOS along with PLAT_SAMSUNG. Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: add support for atmel-hlcdc-pwm deviceBoris Brezillon2014-11-171-0/+11
| | | | | | | | | | | | | | | 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/+9
| | | | | | | | 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: Let PWM_CLPS711X depend on HAS_IOMEMChen Gang2014-10-201-0/+1
| | | | | | | | | | | | PWM_CLPS711X needs HAS_IOMEM, so depend on it, the related error (with allmodconfig under um): MODPOST 1205 modules ERROR: "devm_ioremap_resource" [drivers/pwm/pwm-clps711x.ko] undefined! ERROR: "devm_ioremap" [drivers/net/phy/mdio-bcm-unimac.ko] undefined! Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: lpss: make it buildable only on X86Andy Shevchenko2014-08-251-0/+1
| | | | | | | | There is no sign of this IP block on non-x86 architectures and rather will not be. Thus, make this explicit by applying a direct dependency to X86. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: lpss: Properly split driver to partsAndy Shevchenko2014-08-231-1/+18
| | | | | | | | | | | | | | | | | | 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: fsl-ftm: Select REGMAP_MMIOFabio Estevam2014-08-221-0/+1
| | | | | | | | | | | | | | Commit 42fa98a9c360 ("pwm: fsl-ftm: Convert to direct regmap API usage") introduced the following error when REGMAP_MMIO=n: drivers/built-in.o: In function `fsl_pwm_probe': >> pwm-fsl-ftm.c:(.text+0xd7d7): undefined reference to `devm_regmap_init_mmio_clk' Select select REGMAP_MMIO in order to fix this error. Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* Merge tag 'pwm/for-3.17-rc1' of ↵Linus Torvalds2014-08-091-0/+17
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm Pull pwm changes from Thierry Reding: "The set of changes for this merge window contains two new drivers: one for Rockchip SoCs and another for STMicroelectronics STiH4xx SoCs. The remainder of the changes are the usual small cleanups such as removing redundant OOM messages, signalling that a PWM chip's operations can sleep and removing an unneeded dependency" * tag 'pwm/for-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: pwm: rockchip: Added to support for RK3288 SoC pwm: rockchip: document RK3288 SoC compatible pwm: sti: Remove PWM period table pwm: sti: Sync between enable/disable calls pwm: sti: Ensure same period values for all channels pwm: sti: Fix PWM prescaler handling pwm: sti: Supply Device Tree binding documentation for ST's PWM IP pwm: sti: Add new driver for ST's PWM IP pwm: imx: set can_sleep flag for imx_pwm pwm: lpss: remove dependency on clk framework pwm: pwm-tipwmss: remove unnecessary OOM messages pwm: rockchip: document device tree bindings pwm: add Rockchip SoC PWM support
| * pwm: sti: Add new driver for ST's PWM IPLee Jones2014-08-071-0/+10
| | | | | | | | | | | | | | | | | | 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/+7
| | | | | | | | | | | | | | | | 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: atmel: allow building for AVR32Alexandre Belloni2014-07-091-1/+1
|/ | | | | | | | The Atmel PWM IP can be found on avr32 chips. This allows selecting and building the driver on avr32. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
* pwm: kona: Introduce Kona PWM controller supportTim Kryger2014-04-281-0/+9
| | | | | | | | | | 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/+10
| | | | | | | | | | | 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/+9
| | | | | | | | | 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/+10
| | | | | | | | | | | | 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>
* pwm: renesas-tpu: Add dependency on HAS_IOMEMRichard Weinberger2014-02-261-0/+1
| | | | | | | | | | | On archs like S390 or um this driver cannot build nor work. Make it depend on HAS_IOMEM to bypass build failures. drivers/built-in.o: In function `tpu_probe': drivers/pwm/pwm-renesas-tpu.c:421: undefined reference to `devm_ioremap_resource' Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* Merge tag 'pwm/for-3.14-rc1' of ↵Linus Torvalds2014-01-271-2/+12
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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/+9
| | | | | | | | | | | | | | | | | | | | 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>
| * pwm: pca9685: depends on I2C rather than REGMAP_I2CAxel Lin2013-12-171-1/+2
| | | | | | | | | | | | | | | | | | REGMAP_I2C is not a visible config option. Thus make PWM_PCA9685 depend on I2c and then select REGMAP_I2C. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Steffen Trumtrar <s.trumtrar@pengutronix.de> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-30 01:08:06 +0100