summaryrefslogtreecommitdiff
path: root/drivers/pwm/Kconfig
AgeCommit message (Collapse)AuthorFilesLines
2015-01-30pwm: Imagination Technologies PWM DAC driverNaidu Tellapati1-0/+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>
2015-01-30pwm: Add Allwinner SoC supportAlexandre Belloni1-0/+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>
2015-01-30pwm: atmel-hlcdc: Depend on HAVE_CLKThierry Reding1-0/+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>
2014-11-17pwm: samsung: Allow Samsung PWM driver to be enabled on Exynos7Abhilash Kesavan1-1/+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>
2014-11-17pwm: add support for atmel-hlcdc-pwm deviceBoris Brezillon1-0/+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>
2014-11-17pwm: Add BCM2835 PWM driverBart Tanghe1-0/+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>
2014-10-20pwm: Let PWM_CLPS711X depend on HAS_IOMEMChen Gang1-0/+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>
2014-08-25pwm: lpss: make it buildable only on X86Andy Shevchenko1-0/+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>
2014-08-23pwm: lpss: Properly split driver to partsAndy Shevchenko1-1/+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>
2014-08-22pwm: fsl-ftm: Select REGMAP_MMIOFabio Estevam1-0/+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>
2014-08-09Merge tag 'pwm/for-3.17-rc1' of ↵Linus Torvalds1-0/+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
2014-08-07pwm: sti: Add new driver for ST's PWM IPLee Jones1-0/+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>
2014-07-11pwm: add Rockchip SoC PWM supportBeniamino Galvani1-0/+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>
2014-07-09PWM: atmel: allow building for AVR32Alexandre Belloni1-1/+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>
2014-04-28pwm: kona: Introduce Kona PWM controller supportTim Kryger1-0/+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>
2014-04-01pwm: add support for Intel Low Power Subsystem PWMMika Westerberg1-0/+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>
2014-03-19pwm: Add CLPS711X PWM supportAlexander Shiyan1-0/+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>
2014-03-18pwm: Add Freescale FTM PWM driver supportXiubo Li1-0/+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>
2014-02-26pwm: renesas-tpu: Add dependency on HAS_IOMEMRichard Weinberger1-0/+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>
2014-01-27Merge tag 'pwm/for-3.14-rc1' of ↵Linus Torvalds1-2/+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
2014-01-21pwm: Add LP3943 PWM driverMilo Kim1-0/+10
This is the other of the LP3943 MFD driver. LP3943 can be used as a PWM generator, up to 2 channels. * Two PWM generators supported * Supported PWM operations request, free, config, enable and disable * Pin assignment A driver data, 'pin_used' is checked when a PWM is requested. If the output pin is already assigned, then returns as failure. If the pin is available, 'pin_used' is set. When the PWM is not used anymore, then it is cleared. It is defined as unsigned long type for atomic bit operation APIs, but only LSB 16bits are used because LP3943 has 16 outputs. Signed-off-by: Milo Kim <milo.kim@ti.com> Acked-by: Thierry Reding <thierry.reding@gmail.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2013-12-17pwm: atmel-pwm: Add Atmel PWM controller driverBo Shen1-0/+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>
2013-12-17pwm: pca9685: depends on I2C rather than REGMAP_I2CAxel Lin1-1/+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>
2013-12-12pwm: renesas-tpu: Enable driver compilation with COMPILE_TESTLaurent Pinchart1-1/+1
This helps increasing build testing coverage. Cc: Thierry Reding <thierry.reding@gmail.com> Cc: linux-pwm@vger.kernel.org Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Simon Horman <horms@verge.net.au> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
2013-10-17pwm: add ep93xx PWM supportH Hartley Sweeten1-0/+9
Remove the non-standard EP93xx PWM driver in drivers/misc and add a new driver for the PWM controllers on the EP93xx platform based on the PWM framework. These PWM controllers each support 1 PWM channel with programmable duty cycle, frequency, and polarity inversion. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ryan Mallon <rmallon@gmail.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
2013-06-21pwm: Add Renesas TPU PWM driverLaurent Pinchart1-0/+10
The Timer Pulse Unit (TPU) is a 4-channels 16-bit timer used to generate waveforms. This driver exposes PWM functions through the PWM API for other drivers to use. The code is loosely based on the leds-renesas-tpu driver by Magnus Damm and the TPU PWM driver shipped in the Armadillo EVA 800 kernel sources. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Axel Lin <axel.lin@ingics.com> Tested-by: Simon Horman <horms@verge.net.au> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
2013-06-21pwm: Add sysfs interfaceH Hartley Sweeten1-0/+4
Add a simple sysfs interface to the generic PWM framework. /sys/class/pwm/ `-- pwmchipN/ for each PWM chip |-- export (w/o) ask the kernel to export a PWM channel |-- npwm (r/o) number of PWM channels in this PWM chip |-- pwmX/ for each exported PWM channel | |-- duty_cycle (r/w) duty cycle (in nanoseconds) | |-- enable (r/w) enable/disable PWM | |-- period (r/w) period (in nanoseconds) | `-- polarity (r/w) polarity of PWM (normal/inversed) `-- unexport (w/o) return a PWM channel to the kernel Based on work by Lars Poeschel. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Thierry Reding <thierry.reding@gmail.com> Cc: Lars Poeschel <poeschel@lemonage.de> Cc: Ryan Mallon <rmallon@gmail.com> Cc: Rob Landley <rob@landley.net> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
2013-06-12pwm: add pca9685 driverSteffen Trumtrar1-0/+9
Add pwm driver for the NXP pca9685 16 channel pwm-led controller. The driver is really barebones at this stage. E.g. the OE' pin and therefore the corresponding registers are not supported. The driver was tested on a HW where this pin is tied to GND. Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de> [thierry.reding@gmail.com: style and whitespace cleanups] Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
2013-03-22pwm: davinci: Add Kconfig support for ECAP & EHRPWM devicesPhilip Avinash1-5/+3
Add EHRPWM and ECAP support build support for DAVINCI_DA8XX platforms. Also, since DAVINCI platforms doesn't support TI-PWM-Subsystem module, remove the select option for CONFIG_PWM_TIPWMSS. Also, update CONFIG_PWM_TIPWMSS compiler directive appropriately in pwm-tipwmss.h to fix the below compiler error upon removal of CONFIG_PWM_TIPWMSS for DAVINCI platforms. drivers/pwm/pwm-tiecap.c: In function 'ecap_pwm_probe': drivers/pwm/pwm-tiecap.c:263:4: error: 'PWMSS_ECAPCLK_EN' undeclared (first use in this function) drivers/pwm/pwm-tiecap.c:263:4: note: each undeclared identifier is reported only once for each function it appears in drivers/pwm/pwm-tiecap.c:264:17: error: 'PWMSS_ECAPCLK_EN_ACK' undeclared (first use in this function) drivers/pwm/pwm-tiecap.c: In function 'ecap_pwm_remove': drivers/pwm/pwm-tiecap.c:291:49: error: 'PWMSS_ECAPCLK_STOP_REQ' undeclared (first use in this function) make[2]: *** [drivers/pwm/pwm-tiecap.o] Error 1 make[1]: *** [drivers/pwm] Error 2 make: *** [drivers] Error 2 Signed-off-by: Philip Avinash <avinashphilip@ti.com> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
2013-01-30pwm: Make Kconfig entries more consistentThierry Reding1-4/+4
PWM is now consistently spelled in all uppercase letters. For the Atmel driver the entry now also mentions Atmel to make it easier to find. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
2013-01-08pwm: atmel: add Timer Counter Block PWM driverBoris BREZILLON1-0/+12
This patch adds a PWM driver based on Atmel Timer Counter Block. The Timer Counter Block is used in Waveform generator mode. A Timer Counter Block provides up to 6 PWM devices grouped by 2: * group 0 = PWM 0 and 1 * group 1 = PWM 2 and 3 * group 2 = PMW 4 and 5 PWM devices in a given group must be configured with the same period value. If a PWM device in a group tries to change the period value and the other device is already configured with a different value an error will be returned. This driver requires device tree support. The Timer Counter Block number used to create a PWM chip is given by the tc-block field in an "atmel,tcb-pwm" compatible node. This patch was tested on kizbox board (at91sam9g20 SoC) with pwm-leds. Signed-off-by: Boris BREZILLON <linux-arm@overkiz.com> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
2012-11-28pwm: Remove pwm-twl6030 driverPeter Ujfalusi1-9/+0
This driver only supported the Charging indicator LED. New set of drivers going to provide support for both PWMs and LEDs for twl4030 and twl6030 series of PMICs. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
2012-11-28pwm: New driver to support PWM driven LEDs on TWL4030/6030 series of PMICsPeter Ujfalusi1-0/+9
The driver supports the following LED outputs as generic PWM driver: TWL4030 LEDA and LEDB (PWMA and PWMB) TWL6030 Charging indicator LED (PWM LED) On TWL6030 when the PWM requested LED is configured to be controlled by SW. In this case the user can enable/disable and set the duty period freely. When the PWM has been freed, the LED driver is put back to HW control. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
2012-11-28pwm: New driver to support PWMs on TWL4030/6030 series of PMICsPeter Ujfalusi1-0/+9
The driver supports the following PWM outputs: TWL4030 PWM0 and PWM1 TWL6030 PWM1 and PWM2 On TWL4030 the PWM signals are muxed. Upon requesting the PWM the driver will select the correct mux so the PWM can be used. When the PWM has been freed the original configuration is going to be restored. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
2012-11-28pwm: Add TI PWM subsystem driverPhilip, Avinash1-0/+11
In some platforms (like am33xx), PWM sub modules (ECAP, EHRPWM, EQEP) are integrated to PWM subsystem. These PWM submodules has resources shared and only one register bit-field is provided to control module/clock enable/disable, makes it difficult to handle common resources from independent PWMSS submodule drivers. So the solution here implemented in this patch is, to create driver for PWMSS and take the role of parent driver for PWM submodules. PWMSS parent driver enumerates all the child nodes under PWMSS module. Also symbol "pwmss_submodule_state_change" exported to enable clock gating for individual PWMSS submodules, and submodule drivers has to enable clock gating from their drivers. As this is only supported during DT boot, the parent/child relationship is created and populated in DT execution flow. The only required change is inside DTS file, making EHRPWM & ECAP as a child to PWMSS node. Signed-off-by: Philip, Avinash <avinashphilip@ti.com> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
2012-11-23pwm: Add SPEAr PWM chip driver supportShiraz Hashim1-0/+11
Add support for PWM chips present on SPEAr platforms. These PWM chips support 4 channel output with programmable duty cycle and frequency. More details on these PWM chips can be obtained from relevant chapter of reference manual, present at following[1] location. 1. http://www.st.com/internet/mcu/product/251211.jsp Cc: Thierry Reding <thierry.reding@avionic-design.de> Signed-off-by: Shiraz Hashim <shiraz.hashim@st.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Vipin Kumar <vipin.kumar@st.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
2012-10-10Merge tag 'for-3.7-rc1' of git://gitorious.org/linux-pwm/linux-pwmLinus Torvalds1-1/+28
Pull pwm changes from Thierry Reding: "All legacy PWM providers have now been moved to the PWM subsystem. The plan for 3.8 is to adapt all board files to provide a lookup table for PWM devices in order to get rid of the global namespace. Subsequently, users of the legacy pwm_request() and pwm_free() functions can be migrated to the new pwm_get() and pwm_put() functions. Once this has been completed, the legacy API and the compatibility code in the core can be removed. In addition to the above, these changes also add support for configuring the polarity of a PWM signal (currently only supported on ECAP and EHRPWM) and include a much needed rework of the i.MX driver. Managed functions to obtain and release a PWM device (devm_pwm_get() and devm_pwm_put()) have been added and the pwm-backlight driver has been updated to use them. If the PWM subsystem hasn't been enabled, dummy functions are provided that allow the subsystem to safely compile out. Some common checks on input parameters have been moved to the core and removed from the drivers. Finally, a small fix corrects the description of the PWM specifier's second cell in the device tree representation." * tag 'for-3.7-rc1' of git://gitorious.org/linux-pwm/linux-pwm: (23 commits) pwm: dt: Fix description of second PWM cell pwm: Check for negative duty-cycle and period pwm: Add Ingenic JZ4740 support MIPS: JZ4740: Export timer API pwm: Move PUV3 PWM driver to PWM framework unicore32: pwm: Use managed resource allocations unicore32: pwm: Remove unnecessary indirection unicore32: pwm: Use module_platform_driver() unicore32: pwm: Properly remap memory-mapped registers pwm-backlight: Use devm_pwm_get() instead of pwm_get() pwm: Move AB8500 PWM driver to PWM framework pwm: Fix compilation error when CONFIG_PWM is not defined pwm: i.MX: fix clock lookup pwm: i.MX: use per clock unconditionally pwm: i.MX: add devicetree support pwm: i.MX: Use module_platform_driver pwm: i.MX: add functions to enable/disable pwm. pwm: i.MX: remove unnecessary if in pwm_[en|dis]able pwm: i.MX: factor out SoC specific functions pwm: pwm-tiehrpwm: Add support for configuring polarity of PWM ...
2012-10-05pwm: Add Ingenic JZ4740 supportThierry Reding1-1/+10
This commit moves the driver to drivers/pwm and converts it to the new PWM framework. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Acked-by: Lars-Peter Clausen <lars@metafoo.de> Tested-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Ralf Baechle <ralf@linux-mips.org>
2012-10-05pwm: Move PUV3 PWM driver to PWM frameworkThierry Reding1-1/+10
This commit moves the driver to drivers/pwm and converts it to the new PWM framework. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Tested-by: Qin Rui <qinrui@mprc.pku.edu.cn> Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
2012-10-05Merge tag 'mfd-3.7-1' of ↵Linus Torvalds1-0/+9
git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6 Pull MFD changes from Samuel Ortiz: "MFD bits for the 3.7 merge window. As usual we have a few new drivers: - TI LP8788 - TI OMAP USB TLL - Maxim MAX8907 - SMSC ECE1099 - Dialog Semiconductor DA9055 - A simpler syscon driver that allow us to get rid of the anatop one. Drivers are also gradually getting Device Tree and IRQ domain support. The following drivers got DT support: - palmas, 88pm860x, tc3589x and twl4030-audio And those ones now use the IRQ domain APIs: - 88pm860x, tc3589x, db8500_prcmu Also some other interesting changes: - Intel's ICH LPC now supports Lynx Point - TI's twl4030-audio added a GPO child - tps6527 enabled its backlight subdevice - The twl6030 pwm driver moved to the new PWM subsystem And finally a bunch of cleanup and casual fixes for mc13xxx, 88pm860x, palmas, ab8500, wm8994, wm5110, max8907 and the tps65xxx family." Fix up various annoying conflicts: the DT and IRQ domain support came in twice and was already in 3.6. And then it was apparently rebased. Guys, DON'T REBASE! * tag 'mfd-3.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: (89 commits) ARM: dts: Enable 88pm860x pmic mfd: 88pm860x: Move gpadc init into touch mfd: 88pm860x: Device tree support mfd: 88pm860x: Use irqdomain mfd: smsc: Add support for smsc gpio io/keypad driver backlight: tps65217_bl: Add missing platform_set_drvdata in tps65217_bl_probe mfd: DA9055 core driver mfd: tps65910: Add alarm interrupt of TPS65910 RTC to mfd device list mfd: wm5110: Add register patches for revision B mfd: wm5110: Disable control interface error report for WM5110 rev B mfd: max8907: Remove regulator-compatible from DT docs backlight: Add TPS65217 WLED driver mfd: Add backlight as subdevice to the tps65217 mfd: Provide the PRCMU with its own IRQ domain mfd: Fix max8907 sparse warning mfd: Add lp8788 mfd driver mfd: dbx500: Provide a more accurate smp_twd clock mfd: rc5t583: Fix warning messages regulator: palmas: Add DT support mfd: palmas: Change regulator defns to better suite DT ...
2012-09-20pwm: Move AB8500 PWM driver to PWM frameworkThierry Reding1-0/+9
This commit moves the driver to drivers/pwm and converts it to the new PWM framework. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Arun Murthy <arun.murthy@stericsson.com>
2012-09-19pwm: Move TWL6030 PWM driver to PWM frameworkThierry Reding1-0/+9
This commit moves the driver to drivers/pwm and converts it to the new PWM framework. In order for this to work properly, register the PWM as child of the multi-function TWL6030 device. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-08-20pwm: Improve Kconfig help textThierry Reding1-6/+25
The Kconfig help text should help the user understand what functionality is provided by an option. This is especially true for new subsystems. An improved help text is provided by this commit in the hopes of clarifying the usefulness of the PWM framework. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Acked-by: Borislav Petkov <bp@alien8.de>
2012-07-26pwm: pwm-tiehrpwm: PWM driver support for EHRPWMPhilip, Avinash1-0/+10
Enhanced high resolution PWM module (EHRPWM) hardware can be used to generate PWM output over 2 channels. This commit adds PWM driver support for EHRPWM device present on AM33XX SOC. Current implementation supports simple PWM functionality. Reviewed-by: Vaibhav Bedia <vaibhav.bedia@ti.com> Signed-off-by: Philip, Avinash <avinashphilip@ti.com> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
2012-07-26pwm: pwm-tiecap: PWM driver support for ECAP APWMPhilip, Avinash1-0/+10
ECAP hardware on AM33XX SOC supports auxiliary PWM (APWM) feature. This commit adds PWM driver support for ECAP hardware on AM33XX SOC. In the ECAP hardware, each PWM pin can also be configured to be in capture mode. Current implementation only supports PWM mode of operation. Also, hardware supports sync between multiple PWM pins but the driver supports simple independent PWM functionality. Reviewed-by: Vaibhav Bedia <vaibhav.bedia@ti.com> Signed-off-by: Philip, Avinash <avinashphilip@ti.com> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
2012-07-23pwm: add lpc32xx PWM supportAlexandre Pereira da Silva1-0/+10
Add lpc32xx SOC PWM driver. Signed-off-by: Alexandre Pereira da Silva <aletes.xgr@gmail.com> Acked-by: Roland Stigge <stigge@antcom.de> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
2012-07-23pwm: Conflict with legacy PWM APIThierry Reding1-0/+1
In order to avoid duplicate symbols with legacy PWM API implementations, the new PWM framework needs to conflict with any of the existing legacy implementations. This is done in two ways: for implementations provided by drivers, a conflict is added to the driver to ensure it will have to be ported to the PWM subsystem before it can coexist with other PWM providers. For architecture-specific code, the conflict is added to the PWM symbol to avoid confusion when a previously picked platform or machine can no longer be selected because of the PWM subsystem being included. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
2012-07-23pwm: pwm-mxs: use global reset function stmp_reset_blockShawn Guo1-0/+1
Use global reset function stmp_reset_block instead of mxs_reset_block to remove <mach/common.h> inclusion. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
2012-07-03pwm: add pwm-mxs supportShawn Guo1-0/+9
Add generic PWM framework driver (DT only) for Freescale MXS. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
2012-07-03ARM vt8500: Move vt8500 pwm driver to pwm frameworkSascha Hauer1-0/+9
Move the driver to drivers/pwm/ and convert it to use the framework. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Cc: Alexey Charkov <alchark@gmail.com> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-22 23:16:31 +0300