pwm: tiehrpwm: fix disabled state of pwm when inverted

Submitted by Barnes, Clifton A. on Oct. 3, 2016, 11:37 a.m.

Details

Message ID 1475494622-43846-1-git-send-email-cabarnes@indesign-llc.com
State New
Headers show

Commit Message

Barnes, Clifton A. Oct. 3, 2016, 11:37 a.m.
The disable function forces the output to low regardless of whether
the PWM is inverted. Fix this by checking the inverted status of the
PWM and force the output to the proper state when disabled.

Signed-off-by: Clifton Barnes <cabarnes@indesign-llc.com>
---
 drivers/pwm/pwm-tiehrpwm.c |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

Patch hide | download patch | download mbox

diff --git a/drivers/pwm/pwm-tiehrpwm.c b/drivers/pwm/pwm-tiehrpwm.c
index b5c6b06..e47e020 100644
--- a/drivers/pwm/pwm-tiehrpwm.c
+++ b/drivers/pwm/pwm-tiehrpwm.c
@@ -372,13 +372,14 @@  static void ehrpwm_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm)
 {
 	struct ehrpwm_pwm_chip *pc = to_ehrpwm_pwm_chip(chip);
 	unsigned short aqcsfrc_val, aqcsfrc_mask;
+	bool inv = pc->polarity[pwm->hwpwm] == PWM_POLARITY_INVERSED;
 
-	/* Action Qualifier puts PWM output low forcefully */
+	/* Action Qualifier puts PWM output high/low forcefully */
 	if (pwm->hwpwm) {
-		aqcsfrc_val = AQCSFRC_CSFB_FRCLOW;
+		aqcsfrc_val = inv ? AQCSFRC_CSFB_FRCHIGH : AQCSFRC_CSFB_FRCLOW;
 		aqcsfrc_mask = AQCSFRC_CSFB_MASK;
 	} else {
-		aqcsfrc_val = AQCSFRC_CSFA_FRCLOW;
+		aqcsfrc_val = inv ? AQCSFRC_CSFA_FRCHIGH : AQCSFRC_CSFA_FRCLOW;
 		aqcsfrc_mask = AQCSFRC_CSFA_MASK;
 	}