Commit 9feaa388 authored by Uwe Kleine-König's avatar Uwe Kleine-König Committed by sanglipeng
Browse files

pwm: hibvt: Explicitly set .polarity in .get_state() 

stable inclusion
from stable-v5.10.179
commit 155b2586de3f171d46c8a1955990d4676487501e
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I8C809

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=155b2586de3f171d46c8a1955990d4676487501e

--------------------------------

[ Upstream commit 6f579379 ]

The driver only both polarities. Complete the implementation of
.get_state() by setting .polarity according to the configured hardware
state.

Fixes: d09f0081 ("pwm: Add PWM driver for HiSilicon BVT SOCs")
Link: https://lore.kernel.org/r/20230228135508.1798428-2-u.kleine-koenig@pengutronix.de


Signed-off-by: default avatarUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: default avatarThierry Reding <thierry.reding@gmail.com>
Signed-off-by: default avatarUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarsanglipeng <sanglipeng1@jd.com>
parent 917dc051

drivers/pwm/pwm-hibvt.c

+1 −0
Original line number Diff line number Diff line
@@ -146,6 +146,7 @@ static void hibvt_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm, 


	value = readl(base + PWM_CTRL_ADDR(pwm->hwpwm));

	state->enabled = (PWM_ENABLE_MASK & value);

	state->polarity = (PWM_POLARITY_MASK & value) ? PWM_POLARITY_INVERSED : PWM_POLARITY_NORMAL;

}



static int hibvt_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,