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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2017-01-28 17:10:40 +0200
committerThierry Reding <thierry.reding@gmail.com>2017-01-30 08:13:39 +0100
commitb5c050c719922901891bdd8580d224e2a0035db5 (patch)
tree5cb36aac5ece4729626dd424c6e13a781991f33d /drivers/pwm
parent684309e5043efaaa94d9b4e65f53f7fdde1f6675 (diff)
downloadlinux-b5c050c719922901891bdd8580d224e2a0035db5.tar.bz2
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>
Diffstat (limited to 'drivers/pwm')
-rw-r--r--drivers/pwm/pwm-lpss.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/pwm/pwm-lpss.c b/drivers/pwm/pwm-lpss.c
index 8642feeb8abd..ffa01ab907a6 100644
--- a/drivers/pwm/pwm-lpss.c
+++ b/drivers/pwm/pwm-lpss.c
@@ -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;