Commit 4cc23430 authored Jun 02, 2020 by Guru Das Srinagesh Committed by Thierry Reding Jun 17, 2020

pwm: sifive: Use 64-bit division macro



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>

parent 5bc5d99f

drivers/pwm/pwm-sifive.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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);

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