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pwm: pca9685: Fix period change with same duty cycle

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am: 6ef213d621

Change-Id: I8fb7580acf2136527372f2435e04081821bac7c7
This commit is contained in:
Clemens Gruber 2017-03-15 02:11:49 +00:00 • committed by android-build-merger
commit 27eb9f28e3
1 changed files with 0 additions and 11 deletions
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11
drivers/pwm/pwm-pca9685.c
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@ -65,7 +65,6 @@
#define PCA9685_MAXCHAN 0x10
#define LED_FULL (1 << 4)
#define MODE1_RESTART (1 << 7)
#define MODE1_SLEEP (1 << 4)
#define MODE2_INVRT (1 << 4)
#define MODE2_OUTDRV (1 << 2)
@ -117,16 +116,6 @@ static int pca9685_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
udelay(500);
pca->period_ns = period_ns;
/*
* If the duty cycle did not change, restart PWM with
* the same duty cycle to period ratio and return.
*/
if (duty_ns == pca->duty_ns) {
regmap_update_bits(pca->regmap, PCA9685_MODE1,
MODE1_RESTART, 0x1);
return 0;
}
} else {
dev_err(chip->dev,
"prescaler not set: period out of bounds!\n");