pwm: atmel: Fix incorrect CDTY value after disabling
authorAlexandre Belloni <alexandre.belloni@free-electrons.com>
Mon, 25 May 2015 16:11:49 +0000 (18:11 +0200)
committerThierry Reding <thierry.reding@gmail.com>
Fri, 12 Jun 2015 09:16:12 +0000 (11:16 +0200)
commit472ac3dcac108d6648ee28616c6de1e3b0bb361f
treec8e8c98f9737977e5442f45797a6b88c61a2f995
parent4c027f7ba8520df088d34ae045205a6f8e2a1d76
pwm: atmel: Fix incorrect CDTY value after disabling

pwm-leds calls .config() and .disable() in a row. This exhibits that it
may happen that the channel gets disabled before CDTY has been updated
with CUPD. The issue gets quite worse with long periods. So, ensure that
at least one period has past before disabling the channel by polling
ISR.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Tested-by: Gaƫl PORTAY <gael.portay@gmail.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
drivers/pwm/pwm-atmel.c