Commit 453e8b3d authored by Uwe Kleine-König's avatar Uwe Kleine-König Committed by Thierry Reding
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pwm: atmel: Fix duty cycle calculation in .get_state() 



The CDTY register contains the number of inactive cycles. .apply() does
this correctly, however .get_state() got this wrong.

Fixes: 651b510a ("pwm: atmel: Implement .get_state()")
Signed-off-by: default avatarUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: default avatarThierry Reding <thierry.reding@gmail.com>
parent 721b5957

drivers/pwm/pwm-atmel.c

+1 −1
Original line number Diff line number Diff line
@@ -319,7 +319,7 @@ static void atmel_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm, 


		cdty = atmel_pwm_ch_readl(atmel_pwm, pwm->hwpwm,

					  atmel_pwm->data->regs.duty);

		tmp = (u64)cdty * NSEC_PER_SEC;

		tmp = (u64)(cprd - cdty) * NSEC_PER_SEC;

		tmp <<= pres;

		state->duty_cycle = DIV64_U64_ROUND_UP(tmp, rate);