pwm: sun4i: Use nsecs_to_jiffies to avoid a division

Since the PWM framework is switching struct pwm_state.period's datatype
to u64, prepare for this transition by using nsecs_to_jiffies() which
does away with the need for a division operation.

Signed-off-by: Guru Das Srinagesh <gurus@codeaurora.org>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

diff --git a/drivers/pwm/pwm-sun4i.c b/drivers/pwm/pwm-sun4i.c
index 18fbbe3277d0fe1c20598205d9a2e0b53d351da9..961c59c99bb3be30e287d3c9d4810a1e92cbe227 100644 (file)
--- a/drivers/pwm/pwm-sun4i.c
+++ b/drivers/pwm/pwm-sun4i.c
@@ -285,7 +285,7 @@ static int sun4i_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
        val = (duty & PWM_DTY_MASK) | PWM_PRD(period);
        sun4i_pwm_writel(sun4i_pwm, val, PWM_CH_PRD(pwm->hwpwm));
        sun4i_pwm->next_period[pwm->hwpwm] = jiffies +
-               usecs_to_jiffies(cstate.period / 1000 + 1);
+               nsecs_to_jiffies(cstate.period + 1000);
 
        if (state->polarity != PWM_POLARITY_NORMAL)
                ctrl &= ~BIT_CH(PWM_ACT_STATE, pwm->hwpwm);