summaryrefslogtreecommitdiffstats
path: root/drivers/pwm (follow)
Commit message (Collapse)AuthorAgeFilesLines
* Merge tag 'for-3.8-rc1' of git://gitorious.org/linux-pwm/linux-pwmLinus Torvalds2012-12-1915-218/+1430
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull pwm changes from Thierry Reding: "A new driver has been added for the SPEAr platform and the TWL4030/6030 driver has been replaced by two drivers that control the regular PWMs and the PWM driven LEDs provided by the chips. The vt8500, tiecap, tiehrpwm, i.MX, LPC32xx and Samsung drivers have all been improved and the device tree bindings now support the PWM signal polarity." Fix up trivial conflicts due to __devinit/exit removal. * tag 'for-3.8-rc1' of git://gitorious.org/linux-pwm/linux-pwm: (21 commits) pwm: samsung: add missing s3c->pwm_id assignment pwm: lpc32xx: Set the chip base for dynamic allocation pwm: lpc32xx: Properly disable the clock on device removal pwm: lpc32xx: Fix the PWM polarity pwm: i.MX: eliminate build warning pwm: Export of_pwm_xlate_with_flags() pwm: Remove pwm-twl6030 driver pwm: New driver to support PWM driven LEDs on TWL4030/6030 series of PMICs pwm: New driver to support PWMs on TWL4030/6030 series of PMICs pwm: pwm-tiehrpwm: pinctrl support pwm: tiehrpwm: Add device-tree binding pwm: pwm-tiehrpwm: Adding TBCLK gating support. pwm: pwm-tiecap: pinctrl support pwm: tiecap: Add device-tree binding pwm: Add TI PWM subsystem driver pwm: Device tree support for PWM polarity pwm: vt8500: Ensure PWM clock is enabled during pwm_config pwm: vt8500: Fix build error pwm: spear: Staticize spear_pwm_config() pwm: Add SPEAr PWM chip driver support ...
| * pwm: samsung: add missing s3c->pwm_id assignmentJoonyoung Shim2012-12-141-0/+1
| | | | | | | | | | | | | | The s3c->pwm_id is used to calculate offset of related register. Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
| * pwm: lpc32xx: Set the chip base for dynamic allocationAlban Bedel2012-12-061-0/+1
| | | | | | | | | | | | | | | | | | | | Doing so allows the base to be allocated dynamically at runtime and makes it easier for the chip to coexist with other PWM chips. Signed-off-by: Alban Bedel <alban.bedel@avionic-design.de> Acked-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>
| * pwm: lpc32xx: Properly disable the clock on device removalAlban Bedel2012-12-061-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | A single clock is used for all PWMs meaning the clock's reference count might be between 0 and N when .remove() is called. Instead of a single clk_disable() call pwm_disable() on each PWM, to ensure that clk_disable() is called for each PWM that is still enabled. Signed-off-by: Alban Bedel <alban.bedel@avionic-design.de> Acked-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>
| * pwm: lpc32xx: Fix the PWM polarityAlban Bedel2012-12-061-1/+16
| | | | | | | | | | | | | | | | | | | | The duty cycles value goes from 1 (99% HIGH) to 256 (0% HIGH) but it is stored modulo 256 in the register as it is only 8 bits wide. Signed-off-by: Alban Bedel <alban.bedel@avionic-design.de> Acked-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>
| * pwm: i.MX: eliminate build warningLothar Waßmann2012-12-061-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | compiling the i.MX pwm driver produces the following warning: |drivers/pwm/pwm-imx.c: In function 'imx_pwm_probe': |drivers/pwm/pwm-imx.c:281:7: warning: assignment discards qualifiers from pointer target type Apply a 'const' attribute to the affected variable declaration. Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
| * pwm: Export of_pwm_xlate_with_flags()Thierry Reding2012-12-061-0/+1
| | | | | | | | | | | | | | | | | | Drivers may want to use this function if they support any of the flags that can be passed via a third cell in the DT specifier. Since those drivers may be built as modules the symbol needs to be exported to make sure that it can be accessed. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
| * pwm: Remove pwm-twl6030 driverPeter Ujfalusi2012-11-283-194/+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>
| * pwm: New driver to support PWM driven LEDs on TWL4030/6030 series of PMICsPeter Ujfalusi2012-11-283-0/+354
| | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * pwm: New driver to support PWMs on TWL4030/6030 series of PMICsPeter Ujfalusi2012-11-283-0/+369
| | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * pwm: pwm-tiehrpwm: pinctrl supportPhilip, Avinash2012-11-281-0/+6
| | | | | | | | | | | | | | | | Enable pinctrl for pwm-tiehrpwm if pinctrl driver available, else bail out with warning message. Signed-off-by: Philip, Avinash <avinashphilip@ti.com> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
| * pwm: tiehrpwm: Add device-tree bindingPhilip, Avinash2012-11-281-1/+41
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch 1. Add support for device-tree binding for EHRWPM driver. 2. Set size of pwm-cells set to 3 to support PWM channel number, PWM period & polarity configuration from device tree. 3. Add enable/disable clock gating in PWM subsystem common config space. 4. When here set .owner member in platform_driver structure to THIS_MODULE. Signed-off-by: Philip, Avinash <avinashphilip@ti.com> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Rob Landley <rob@landley.net> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
| * pwm: pwm-tiehrpwm: Adding TBCLK gating support.Philip, Avinash2012-11-281-0/+14
| | | | | | | | | | | | | | | | | | | | | | | | Some platforms (like AM33XX) requires clock gating from control module explicitly for TBCLK. Enabling of this clock required for the functioning of the time base sub module in EHRPWM module. Adding support for handling by enabling the clock on PWM device enable & disable on PWM device disable. Platforms don't have explicit TBCLK gating has to add dummy TBCLK node. Signed-off-by: Philip, Avinash <avinashphilip@ti.com> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
| * pwm: pwm-tiecap: pinctrl supportPhilip, Avinash2012-11-281-0/+6
| | | | | | | | | | | | | | | | Enable pinctrl for pwm-tiecap if pinctrl driver available, else bail out with warning message. Signed-off-by: Philip, Avinash <avinashphilip@ti.com> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
| * pwm: tiecap: Add device-tree bindingPhilip, Avinash2012-11-281-1/+41
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch 1. Add support for device-tree binding for ECAP APWM driver. 2. Set size of pwm-cells set to 3 to support PWM channel number, PWM period & polarity configuration from device tree. 3. Add enable/disable clock gating in PWM subsystem common config space. 4. When here set .owner member in platform_driver structure to THIS_MODULE. Signed-off-by: Philip, Avinash <avinashphilip@ti.com> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Rob Landley <rob@landley.net> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
| * pwm: Add TI PWM subsystem driverPhilip, Avinash2012-11-284-0/+190
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * pwm: Device tree support for PWM polarityPhilip, Avinash2012-11-221-0/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | Add support for encoding PWM properties in bit encoded form with of_pwm_xlate_with_flags() function support. Platforms require platform specific PWM properties has to populate in 3rd cell of the pwm-specifier and PWM driver should also set .of_xlate support with this function. Currently PWM property polarity encoded in bit position 0 of the third cell in pwm-specifier. Signed-off-by: Philip, Avinash <avinashphilip@ti.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
| * pwm: vt8500: Ensure PWM clock is enabled during pwm_configTony Prisk2012-11-221-2/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | This patch corrects a bug reported by Peter Vasil. When all PWMs are disabled, PWM module may be disabled during calls to pwm_config. This patch enables/disables the clock in pwm_config to ensure the module is active before register read/ writes. Signed-off-by: Tony Prisk <linux@prisktech.co.nz> Tested-by: Peter Vasil <petervasil@gmail.com> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
| * pwm: vt8500: Fix build errorTony Prisk2012-11-221-1/+1
| | | | | | | | | | | | | | A missing '{' causes a build error in pwm-vt8500.c Signed-off-by: Tony Prisk <linux@prisktech.co.nz> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
| * pwm: spear: Staticize spear_pwm_config()Axel Lin2012-11-221-2/+2
| | | | | | | | | | | | | | | | spear_pwm_config() is not referenced outside of this file, make it static. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
| * pwm: Add SPEAr PWM chip driver supportShiraz Hashim2012-11-223-0/+288
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * pwm: vt8500: Update vt8500 PWM driver supportTony Prisk2012-11-011-23/+63
| | | | | | | | | | | | | | | | | | | | | | | | This patch updates pwm-vt8500.c to support devicetree probing and make use of the common clock subsystem. A binding document describing the PWM controller found on arch-vt8500 is also included. Signed-off-by: Tony Prisk <linux@prisktech.co.nz> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
* | pwm: remove use of __devexitBill Pemberton2012-11-2812-12/+12
| | | | | | | | | | | | | | | | | | CONFIG_HOTPLUG is going away as an option so __devexit is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Acked-by: Thierry Reding <thierry.reding@avionic-design.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | pwm: remove use of __devinitBill Pemberton2012-11-287-7/+7
| | | | | | | | | | | | | | | | | | CONFIG_HOTPLUG is going away as an option so __devinit is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Acked-by: Thierry Reding <thierry.reding@avionic-design.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | pwm: remove use of __devexit_pBill Pemberton2012-11-2813-13/+13
|/ | | | | | | | | CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Acked-by: Thierry Reding <thierry.reding@avionic-design.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Merge tag 'for-3.7-rc1' of git://gitorious.org/linux-pwm/linux-pwmLinus Torvalds2012-10-1012-131/+904
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 ...
| * pwm: Check for negative duty-cycle and periodThierry Reding2012-10-056-12/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make sure the duty-cycle and period passed in are not negative. This should eventually be made implicit by making them unsigned. While at it, the drivers' .config() implementations can have the equivalent checks removed. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Cc: Shawn Guo <shawn.guo@linaro.org> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Sachin Kamat <sachin.kamat@linaro.org> Cc: Axel Lin <axel.lin@gmail.com> Cc: Kukjin Kim <kgene.kim@samsung.com> Cc: Jingoo Han <jg1.han@samsung.com> Cc: Jonghwan Choi <jhbird.choi@samsung.com> Cc: Sascha Hauer <s.hauer@pengutronix.de> Cc: "Philip, Avinash" <avinashphilip@ti.com> Cc: Vaibhav Bedia <vaibhav.bedia@ti.com> Acked-by: Jingoo Han <jg1.han@samsung.com>
| * pwm: Add Ingenic JZ4740 supportThierry Reding2012-10-053-1/+232
| | | | | | | | | | | | | | | | | | | | 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>
| * pwm: Move PUV3 PWM driver to PWM frameworkThierry Reding2012-10-053-1/+172
| | | | | | | | | | | | | | | | | | 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>
| * pwm: Move AB8500 PWM driver to PWM frameworkThierry Reding2012-09-203-0/+163
| | | | | | | | | | | | | | | | | | | | 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>
| * pwm: i.MX: fix clock lookupPhilipp Zabel2012-09-121-8/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The i.MX PWM core has two clocks: The ipg clock and the ipg highfreq (peripheral) clock. The ipg clock has to be enabled for this hardware to work. The actual PWM output can either be driven by the ipg clock or the ipg highfreq. The ipg highfreq has the advantage that it runs even when the SoC is in low power modes. This patch requests both clocks and enables the ipg clock for accessing registers and the peripheral clock to actually turn on the PWM. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Reviewed-by: Shawn Guo <shawn.guo@linaro.org> Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
| * pwm: i.MX: use per clock unconditionallySascha Hauer2012-09-121-7/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The i.MX PWM module has two clocks: The ipg clock and the ipg highfreq (peripheral) clock. The ipg clock has to be enabled for this hardware to work. The actual PWM output can either be driven by the ipg clock or the ipg highfreq. The ipg highfreq has the advantage that it runs even when the SoC is in low power modes. Use the always running clock also on i.MX25. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Reviewed-by: Shawn Guo <shawn.guo@linaro.org> Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
| * pwm: i.MX: add devicetree supportPhilipp Zabel2012-09-121-9/+35
| | | | | | | | | | | | | | | | | | | | | | | | At the same time remove platform based support. No user for this driver has made it into mainline so far, so all we break is out of tree stuff. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Reviewed-by: Shawn Guo <shawn.guo@linaro.org> Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
| * pwm: i.MX: Use module_platform_driverSascha Hauer2012-09-121-11/+1
| | | | | | | | | | | | | | Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Reviewed-by: Shawn Guo <shawn.guo@linaro.org> Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
| * pwm: i.MX: add functions to enable/disable pwm.Sascha Hauer2012-09-121-4/+44
| | | | | | | | | | | | | | | | | | | | | | | | We used to enable/disable the PWM only by switching the clock on or off. Instead, use the dedicated register bits. These differ on different SoCs, so introduce a SoC specific function for this. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Reviewed-by: Shawn Guo <shawn.guo@linaro.org> Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
| * pwm: i.MX: remove unnecessary if in pwm_[en|dis]ableSascha Hauer2012-09-121-14/+11
| | | | | | | | | | | | | | | | | | | | | | The PWM core makes sure that pwm_enable/disable are called only once. Still keep the enabled state since we will need it in pwm_config. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Reviewed-by: Shawn Guo <shawn.guo@linaro.org> Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
| * pwm: i.MX: factor out SoC specific functionsSascha Hauer2012-09-121-63/+83
| | | | | | | | | | | | | | | | | | | | To cleanup the code and to make it easier to support different SoCs. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Reviewed-by: Shawn Guo <shawn.guo@linaro.org> Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
| * pwm: pwm-tiehrpwm: Add support for configuring polarity of PWMPhilip, Avinash2012-09-101-22/+51
| | | | | | | | | | | | | | | | | | | | | | | | EHRPWM hardware supports polarity configuration of PWM output. However configuration of polarity done in hardware only in .enable() to ensure PWM output present only after enabling PWM. This commit adds support for polarity configuration for EHRPWM. When being here, remove configuring of polarity during .config() and do it explicitly from .set_polarity(). Signed-off-by: Philip, Avinash <avinashphilip@ti.com> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
| * pwm: pwm-tiecap: Add support for configuring polarity of PWMPhilip, Avinash2012-09-101-0/+22
| | | | | | | | | | | | | | | | ECAP APWM hardware supports polarity configuration of PWM output. This commit adds support for polarity configuration of ECAP APWM. Signed-off-by: Philip, Avinash <avinashphilip@ti.com> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
| * pwm: add devm_pwm_get() and devm_pwm_put()Alexandre Courbot2012-09-101-0/+58
| | | | | | | | | | | | | | | | | | Add resource managed variants of pwm_get() and pwm_put() for convenience. Code is largely inspired by the equivalent devm functions of the regulator framework. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
| * pwm: Add support for configuring the PWM polarityPhilip, Avinash2012-09-101-0/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some hardware supports inverting the polarity of the PWM signal. This commit adds support to the PWM framework to allow users of the PWM API to configure the polarity. Note that in order to reduce complexity, changing the polarity of a PWM signal is only allowed while the PWM is disabled. A practical example where this can prove useful is to simulate inversion of the duty cycle. While inversion of polarity and duty cycle are not exactly the same, the differences for most use-cases are negligible. Signed-off-by: Philip, Avinash <avinashphilip@ti.com> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
* | Merge tag 'mfd-3.7-1' of ↵Linus Torvalds2012-10-053-0/+194
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 ...
| * pwm: Move TWL6030 PWM driver to PWM frameworkThierry Reding2012-09-193-0/+194
| | | | | | | | | | | | | | | | | | | | 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>
* | pwm: pwm-tiehrpwm: Fix conflicting channel period settingPhilip, Avinash2012-09-101-0/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | EHRPWM hardware supports 2 independent PWM channels. However the device uses only one register to handle period setting for both channels. So both channels should be configured for same period (in nsec). Fix the same by returning error for conflicting period values. However, allow 1. Configuration of period settings if not conflicting with other channels 2. Re-configuring of period settings if no other channels being configured Signed-off-by: Philip, Avinash <avinashphilip@ti.com> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
* | pwm: pwm-tiecap: Disable APWM mode after configurePhilip, Avinash2012-09-101-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | APWM mode is enabled while configuring PWM device. This was done to handle shadow & immediate mode update of period and compare registers. However, leaving it enabled after configuring will cause APWM output on PWM pin even before enabling PWM device. Fix the same by disabling APWM mode after configuring if PWM device is not running. Signed-off-by: Philip, Avinash <avinashphilip@ti.com> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
* | pwm: Improve Kconfig help textThierry Reding2012-08-201-6/+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>
* | pwm: core: Fix coding style issuesSachin Kamat2012-08-171-4/+4
| | | | | | | | | | | | | | | | | | | | Fixes the following: WARNING: line over 80 characters ERROR: spaces required around that ':' (ctx:VxW) WARNING: Prefer pr_warn(... to pr_warning(... Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
* | pwm: vt8500: Fix coding style issueSachin Kamat2012-08-171-1/+1
| | | | | | | | | | | | | | | | | | Fixes the following: WARNING: Prefer pr_warn(... to pr_warning(... pr_warning("Waiting for status bits 0x%x to clear timed out\n", Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
* | pwm: Remove a redundant error message when devm_request_and_ioremap failsAxel Lin2012-08-173-9/+3
| | | | | | | | | | | | | | | | | | | | The implementation in devm_request_and_ioremap() already shows error message, so no need to show dev_err again if devm_request_and_ioremap() fails. Signed-off-by: Axel Lin <axel.lin@gmail.com> Cc: Stephen Warren <swarren@wwwdotorg.org> Cc: Philip, Avinash <avinashphilip@ti.com> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
* | pwm: samsung: add missing device pointer to struct pwm_chipJingoo Han2012-08-171-0/+1
| | | | | | | | | | | | | | | | This patch adds missing device pointer to struct pwm_chip. If the device pointer is NULL, pwmchip_add() will return error. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-21 17:47:44 +0100