From patchwork Tue May 5 21:58:36 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Antti Palosaari X-Patchwork-Id: 6344281 Return-Path: X-Original-To: patchwork-linux-media@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 5C53F9F1C2 for ; Tue, 5 May 2015 21:59:20 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 92C232022D for ; Tue, 5 May 2015 21:59:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9F71F2021F for ; Tue, 5 May 2015 21:59:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752636AbbEEV7H (ORCPT ); Tue, 5 May 2015 17:59:07 -0400 Received: from mail.kapsi.fi ([217.30.184.167]:40297 "EHLO mail.kapsi.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752733AbbEEV7A (ORCPT ); Tue, 5 May 2015 17:59:00 -0400 Received: from dyn3-82-128-189-223.psoas.suomi.net ([82.128.189.223] helo=localhost.localdomain.localdomain) by mail.kapsi.fi with esmtpsa (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1Ypkrj-0003Gx-Kn; Wed, 06 May 2015 00:58:59 +0300 From: Antti Palosaari To: linux-media@vger.kernel.org Cc: Antti Palosaari Subject: [PATCH 15/21] tua9001: use div_u64() for frequency calculation Date: Wed, 6 May 2015 00:58:36 +0300 Message-Id: <1430863122-9888-15-git-send-email-crope@iki.fi> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1430863122-9888-1-git-send-email-crope@iki.fi> References: <1430863122-9888-1-git-send-email-crope@iki.fi> X-SA-Exim-Connect-IP: 82.128.189.223 X-SA-Exim-Mail-From: crope@iki.fi X-SA-Exim-Scanned: No (on mail.kapsi.fi); SAEximRunCond expanded to false Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Use div_u64() to simplify and remove home made divides. Signed-off-by: Antti Palosaari --- drivers/media/tuners/tua9001.c | 9 +-------- drivers/media/tuners/tua9001_priv.h | 1 + 2 files changed, 2 insertions(+), 8 deletions(-) diff --git a/drivers/media/tuners/tua9001.c b/drivers/media/tuners/tua9001.c index 09a1034..d4f6ca0 100644 --- a/drivers/media/tuners/tua9001.c +++ b/drivers/media/tuners/tua9001.c @@ -88,7 +88,6 @@ static int tua9001_set_params(struct dvb_frontend *fe) struct dtv_frontend_properties *c = &fe->dtv_property_cache; int ret, i; u16 val; - u32 frequency; struct tua9001_reg_val data[2]; dev_dbg(&client->dev, @@ -122,14 +121,8 @@ static int tua9001_set_params(struct dvb_frontend *fe) data[0].reg = 0x04; data[0].val = val; - - frequency = (c->frequency - 150000000); - frequency /= 100; - frequency *= 48; - frequency /= 10000; - data[1].reg = 0x1f; - data[1].val = frequency; + data[1].val = div_u64((u64) (c->frequency - 150000000) * 48, 1000000); if (fe->callback) { ret = fe->callback(client->adapter, diff --git a/drivers/media/tuners/tua9001_priv.h b/drivers/media/tuners/tua9001_priv.h index 327ead9..bc406c5 100644 --- a/drivers/media/tuners/tua9001_priv.h +++ b/drivers/media/tuners/tua9001_priv.h @@ -18,6 +18,7 @@ #define TUA9001_PRIV_H #include "tua9001.h" +#include #include struct tua9001_reg_val {