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path: root/drivers/pwm/pwm-tiecap.c
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* 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: Remove a redundant error message when devm_request_and_ioremap failsAxel Lin2012-08-171-3/+1
| | | | | | | | | | 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: pwm-tiecap: PWM driver support for ECAP APWMPhilip, Avinash2012-07-261-0/+232
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>
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