diff options
| -rw-r--r-- | drivers/pwm/pwm-rzg2l-gpt.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/pwm/pwm-rzg2l-gpt.c b/drivers/pwm/pwm-rzg2l-gpt.c index 2ddbb13f50aa..360c8bf3b190 100644 --- a/drivers/pwm/pwm-rzg2l-gpt.c +++ b/drivers/pwm/pwm-rzg2l-gpt.c @@ -270,15 +270,19 @@ static int rzg2l_gpt_config(struct pwm_chip *chip, struct pwm_device *pwm, * prescale and period can NOT be modified when there are multiple IOs * in use with different settings. */ - if (rzg2l_gpt->channel_request_count[ch] > 1 && period_ticks != rzg2l_gpt->period_ticks[ch]) - return -EBUSY; + if (rzg2l_gpt->channel_request_count[ch] > 1) { + if (period_ticks < rzg2l_gpt->period_ticks[ch]) + return -EBUSY; + else + period_ticks = rzg2l_gpt->period_ticks[ch]; + } prescale = rzg2l_gpt_calculate_prescale(rzg2l_gpt, period_ticks); pv = rzg2l_gpt_calculate_pv_or_dc(period_ticks, prescale); duty_ticks = mul_u64_u64_div_u64(state->duty_cycle, rzg2l_gpt->rate_khz, USEC_PER_SEC); - if (duty_ticks > RZG2L_MAX_TICKS) - duty_ticks = RZG2L_MAX_TICKS; + if (duty_ticks > period_ticks) + duty_ticks = period_ticks; dc = rzg2l_gpt_calculate_pv_or_dc(duty_ticks, prescale); /* |