The third optional argument of pwms is well defined as polarity and it
is already used in a number of pwm drivers, so, to minimize changes in
the remaining drivers which are to be updated accordingly set polarity
in default of_xlate() function.
Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@xxxxxxxxxx>
Cc: Lothar Waßmann <LW@xxxxxxxxxxxxxxxxxxx>
Cc: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
Cc: Thierry Reding <thierry.reding@xxxxxxxxx>
Cc: Shawn Guo <shawn.guo@xxxxxxxxxx>
---
drivers/pwm/core.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
index 966497d..681d154 100644
--- a/drivers/pwm/core.c
+++ b/drivers/pwm/core.c
@@ -174,6 +174,13 @@ of_pwm_simple_xlate(struct pwm_chip *pc, const struct of_phandle_args *args)
pwm_set_period(pwm, args->args[1]);
+ if (pc->of_pwm_n_cells > 2) {
+ if (args->args[2] & PWM_POLARITY_INVERTED)
+ pwm_set_polarity(pwm, PWM_POLARITY_INVERSED);
+ else
+ pwm_set_polarity(pwm, PWM_POLARITY_NORMAL);
+ }
+
return pwm;
}
--
1.7.10.4
--
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