From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753072Ab3ISHY4 (ORCPT ); Thu, 19 Sep 2013 03:24:56 -0400 Received: from eusmtp01.atmel.com ([212.144.249.242]:59273 "EHLO eusmtp01.atmel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752589Ab3ISHYz (ORCPT ); Thu, 19 Sep 2013 03:24:55 -0400 Message-ID: <523AA6C4.6000305@atmel.com> Date: Thu, 19 Sep 2013 09:24:52 +0200 From: Nicolas Ferre Organization: atmel User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130803 Thunderbird/17.0.8 MIME-Version: 1.0 To: Boris BREZILLON , Thierry Reding CC: , , Subject: Re: [PATCH 2/2] pwm: atmel-tcb: fix max time computation for slow clk source References: <1379516720-23289-1-git-send-email-b.brezillon@overkiz.com> <1379516781-23379-1-git-send-email-b.brezillon@overkiz.com> In-Reply-To: <1379516781-23379-1-git-send-email-b.brezillon@overkiz.com> Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Content-Transfer-Encoding: 7bit X-Originating-IP: [10.161.30.18] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 18/09/2013 17:06, Boris BREZILLON : > Use the the tcb counter width to compute the maximum time that can be > represented using the slow clock source instead of the static 16 bit width. > > Signed-off-by: Boris BREZILLON Acked-by: Nicolas Ferre > --- > drivers/pwm/pwm-atmel-tcb.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/pwm/pwm-atmel-tcb.c b/drivers/pwm/pwm-atmel-tcb.c > index 0266969..f3dcd02 100644 > --- a/drivers/pwm/pwm-atmel-tcb.c > +++ b/drivers/pwm/pwm-atmel-tcb.c > @@ -307,7 +307,7 @@ static int atmel_tcb_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm, > i = slowclk; > rate = 32768; > min = div_u64(NSEC_PER_SEC, rate); > - max = min << 16; > + max = min << tc->tcb_config->counter_width; > > /* If period is too big return ERANGE error */ > if (max < period_ns) > -- Nicolas Ferre