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pwm: lpss: Allow duty cycle to be 0 

A duty cycle is represented by values [0..<period>] which reflects [0%..100%].
0% of the duty cycle means always off (logical "0") on output. Allow this in
the driver.

Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This commit is contained in:
Andy Shevchenko 2017-01-28 17:10:40 +02:00 committed by Thierry Reding
parent 684309e504
commit b5c050c719
1 changed files with 0 additions and 2 deletions
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2
drivers/pwm/pwm-lpss.c
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@ -107,8 +107,6 @@ static int pwm_lpss_config(struct pwm_chip *chip, struct pwm_device *pwm,
base_unit = DIV_ROUND_CLOSEST_ULL(freq, c);
if (duty_ns <= 0)
duty_ns = 1;
on_time_div = 255ULL * duty_ns;
do_div(on_time_div, period_ns);
on_time_div = 255ULL - on_time_div;