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path: root/drivers/pwm/pwm-lpc32xx.c (follow)
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2014-10-20pwm: drop owner assignment from platform_driversWolfram Sang1-1/+0
A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2013-10-08pwm: lpc32xx: Remove redundant of_match_ptrSachin Kamat1-1/+1
The data structure of_match_ptr() protects is always compiled in. Hence of_match_ptr() is not needed. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Cc: Alexandre Pereira da Silva <aletes.xgr@gmail.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
2013-09-03pwm: simplify use of devm_ioremap_resourceJulia Lawall1-3/+0
Remove unneeded error handling on the result of a call to platform_get_resource when the value is passed to devm_ioremap_resource. Move the call to platform_get_resource adjacent to the call to devm_ioremap_resource to make the connection between them more clear. A simplified version of the semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression pdev,res,n,e,e1; expression ret != 0; identifier l; @@ - res = platform_get_resource(pdev, IORESOURCE_MEM, n); ... when != res - if (res == NULL) { ... \(goto l;\|return ret;\) } ... when != res + res = platform_get_resource(pdev, IORESOURCE_MEM, n); e = devm_ioremap_resource(e1, res); // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
2013-06-12pwm: Fill in missing .owner fieldsThierry Reding1-0/+1
Some drivers don't set the .owner fields of the struct device_driver or struct pwm_ops, which causes the module usage count to become wrong. Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
2013-04-23pwm: lpc32xx: Don't change PWM_ENABLE bit in lpc32xx_pwm_configAxel Lin1-2/+5
lpc32xx_pwm_config() is supposed to set duty_ns and period_ns, it should not change PWM_ENABLE bit. Signed-off-by: Axel Lin <axel.lin@ingics.com> Tested-by: Roland Stigge <stigge@antcom.de> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
2013-04-23pwm: lpc32xx: Properly set PWM_ENABLE bit in lpc32xx_pwm_[enable|disable]Axel Lin1-2/+16
According to the LPC32x0 User Manual [1]: For both PWM1 and PWM2 Control Registers: BIT 31: This bit gates the PWM_CLK signal and enables the external output pin to the PWM_PIN_STATE logical level. 0 = PWM disabled. (Default) 1 = PWM enabled So in lpc32xx_pwm_enable(), we should set PWM_ENABLE bit. In lpc32xx_pwm_disable(), we should just clear PWM_ENABLE bit rather than write 0 to the register which will also clear PWMx_RELOADV and PWMx_DUTY bits. [1] http://www.nxp.com/documents/user_manual/UM10326.pdf Signed-off-by: Axel Lin <axel.lin@ingics.com> Tested-by: Roland Stigge <stigge@antcom.de> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
2013-04-23pwm: Constify OF match tablesThierry Reding1-1/+1
A few drivers already annotate this properly. Make the same change for all other OF supporting drivers. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Acked-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Alexandre Pereira da Silva <aletes.xgr@gmail.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
2013-01-22pwm: Convert to devm_ioremap_resource()Thierry Reding1-3/+3
Convert all uses of devm_request_and_ioremap() to the newly introduced devm_ioremap_resource() which provides more consistent error handling. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-12-19Merge tag 'for-3.8-rc1' of git://gitorious.org/linux-pwm/linux-pwmLinus Torvalds1-2/+21
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 ...
2012-12-06pwm: lpc32xx: Set the chip base for dynamic allocationAlban Bedel1-0/+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>
2012-12-06pwm: lpc32xx: Properly disable the clock on device removalAlban Bedel1-1/+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>
2012-12-06pwm: lpc32xx: Fix the PWM polarityAlban Bedel1-1/+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>
2012-11-28pwm: remove use of __devexitBill Pemberton1-1/+1
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>
2012-11-28pwm: remove use of __devexit_pBill Pemberton1-1/+1
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>
2012-07-23pwm: add lpc32xx PWM supportAlexandre Pereira da Silva1-0/+148
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>
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