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pwm: sifive: Use 64-bit division macro

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Since the PWM framework is switching struct pwm_args.period's datatype
to u64, prepare for this transition by using DIV64_U64_ROUND_CLOSEST to
handle a 64-bit divisor.

Signed-off-by: Guru Das Srinagesh <gurus@codeaurora.org>
Acked-by: Palmer Dabbelt <palmerdabbelt@google.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This commit is contained in:
Guru Das Srinagesh 2020-06-02 15:31:12 -07:00 committed by Thierry Reding
parent 5bc5d99f1f
commit 4cc23430a5
1 changed files with 1 additions and 1 deletions
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drivers/pwm/pwm-sifive.c
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@ -181,7 +181,7 @@ static int pwm_sifive_apply(struct pwm_chip *chip, struct pwm_device *pwm,
* consecutively
*/
num = (u64)duty_cycle * (1U << PWM_SIFIVE_CMPWIDTH);
frac = DIV_ROUND_CLOSEST_ULL(num, state->period);
frac = DIV64_U64_ROUND_CLOSEST(num, state->period);
/* The hardware cannot generate a 100% duty cycle */
frac = min(frac, (1U << PWM_SIFIVE_CMPWIDTH) - 1);