diff options
author | Ryo Kodama <ryo.kodama.vz@renesas.com> | 2015-11-08 19:42:25 -0500 |
---|---|---|
committer | Thierry Reding <thierry.reding@gmail.com> | 2015-12-16 11:02:14 -0500 |
commit | 72c16a9f98afad073b4a9c947c1c89bfb886ffcb (patch) | |
tree | c506bf3b4970c77e0b24e3651f25f597254fdd80 /drivers/pwm | |
parent | d6dbdf0ddefa581e49c2abe5fb0eb17d14111d89 (diff) |
pwm: rcar: Improve accuracy of frequency division setting
From: Ryo Kodama <ryo.kodama.vz@renesas.com>
When period_ns is set to the same value of RCAR_PWM_MAX_CYCLE in
rcar_pwm_get_clock_division(), this function should allow such value
for improving accuracy of frequency division setting.
Signed-off-by: Ryo Kodama <ryo.kodama.vz@renesas.com>
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Diffstat (limited to 'drivers/pwm')
-rw-r--r-- | drivers/pwm/pwm-rcar.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/pwm/pwm-rcar.c b/drivers/pwm/pwm-rcar.c index 6e99a63ffa29..7b8ac0678137 100644 --- a/drivers/pwm/pwm-rcar.c +++ b/drivers/pwm/pwm-rcar.c | |||
@@ -81,7 +81,7 @@ static int rcar_pwm_get_clock_division(struct rcar_pwm_chip *rp, int period_ns) | |||
81 | max = (unsigned long long)NSEC_PER_SEC * RCAR_PWM_MAX_CYCLE * | 81 | max = (unsigned long long)NSEC_PER_SEC * RCAR_PWM_MAX_CYCLE * |
82 | (1 << div); | 82 | (1 << div); |
83 | do_div(max, clk_rate); | 83 | do_div(max, clk_rate); |
84 | if (period_ns < max) | 84 | if (period_ns <= max) |
85 | break; | 85 | break; |
86 | } | 86 | } |
87 | 87 | ||