diff mbox

pwm: rcar: Improve accuracy of frequency division setting

Message ID 1447029745-3648-1-git-send-email-yoshihiro.shimoda.uh@renesas.com
State Accepted
Headers show

Commit Message

Yoshihiro Shimoda Nov. 9, 2015, 12:42 a.m. UTC 
From: Ryo Kodama <ryo.kodama.vz@renesas.com>

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>
---
 drivers/pwm/pwm-rcar.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Thierry Reding Dec. 16, 2015, 4:03 p.m. UTC | #1 
On Mon, Nov 09, 2015 at 09:42:25AM +0900, Yoshihiro Shimoda wrote:
> From: Ryo Kodama <ryo.kodama.vz@renesas.com>
> 
> 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>
> ---
>  drivers/pwm/pwm-rcar.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Applied, thanks.

Thierry
diff mbox

Patch

diff --git a/drivers/pwm/pwm-rcar.c b/drivers/pwm/pwm-rcar.c
index 6e99a63..7b8ac06 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)
 		max = (unsigned long long)NSEC_PER_SEC * RCAR_PWM_MAX_CYCLE *
 			(1 << div);
 		do_div(max, clk_rate);
-		if (period_ns < max)
+		if (period_ns <= max)
 			break;
 	}