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authorMaarten Lankhorst <maarten.lankhorst@linux.intel.com>2023-04-12 12:01:32 +0200
committerMaarten Lankhorst <maarten.lankhorst@linux.intel.com>2023-04-12 12:01:32 +0200
commit5603effb8295ada8419408d038a34ca89d658229 (patch)
treeb06d8e309631d507c7b030e943b8479e2d15250b /drivers/pwm/pwm-meson.c
parentb89ce1177d42d5c124e83f3858818cd4e6a2c46f (diff)
parent09a9639e56c01c7a00d6c0ca63f4c7c41abe075d (diff)
Merge remote-tracking branch 'drm/drm-fixes' into drm-misc-fixes
We were stuck on rc2, should at least attempt to track drm-fixes slightly. Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Diffstat (limited to 'drivers/pwm/pwm-meson.c')
-rw-r--r--drivers/pwm/pwm-meson.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/pwm/pwm-meson.c b/drivers/pwm/pwm-meson.c
index 16d79ca5d8f5..5cd7b90872c6 100644
--- a/drivers/pwm/pwm-meson.c
+++ b/drivers/pwm/pwm-meson.c
@@ -162,6 +162,12 @@ static int meson_pwm_calc(struct meson_pwm *meson, struct pwm_device *pwm,
duty = state->duty_cycle;
period = state->period;
+ /*
+ * Note this is wrong. The result is an output wave that isn't really
+ * inverted and so is wrongly identified by .get_state as normal.
+ * Fixing this needs some care however as some machines might rely on
+ * this.
+ */
if (state->polarity == PWM_POLARITY_INVERSED)
duty = period - duty;
@@ -358,6 +364,8 @@ static int meson_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
state->duty_cycle = 0;
}
+ state->polarity = PWM_POLARITY_NORMAL;
+
return 0;
}