From patchwork Wed Mar 30 20:03:37 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Boris BREZILLON X-Patchwork-Id: 8703661 Return-Path: X-Original-To: patchwork-linux-arm@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 42FC19F44D for ; Wed, 30 Mar 2016 20:12:39 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 54E7A20121 for ; Wed, 30 Mar 2016 20:12:38 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6A31020361 for ; Wed, 30 Mar 2016 20:12:37 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1alMS8-0003Ly-UR; Wed, 30 Mar 2016 20:10:56 +0000 Received: from down.free-electrons.com ([37.187.137.238] helo=mail.free-electrons.com) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1alMMb-0004aX-QX; Wed, 30 Mar 2016 20:05:17 +0000 Received: by mail.free-electrons.com (Postfix, from userid 110) id BE351183D; Wed, 30 Mar 2016 22:04:52 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from localhost.localdomain (LFbn-1-2159-240.w90-76.abo.wanadoo.fr [90.76.216.240]) by mail.free-electrons.com (Postfix) with ESMTPSA id 08C9F1F3; Wed, 30 Mar 2016 22:04:41 +0200 (CEST) From: Boris Brezillon To: Thierry Reding , linux-pwm@vger.kernel.org Subject: [PATCH v5 14/46] pwm: keep PWM state in sync with hardware state Date: Wed, 30 Mar 2016 22:03:37 +0200 Message-Id: <1459368249-13241-15-git-send-email-boris.brezillon@free-electrons.com> X-Mailer: git-send-email 2.5.0 In-Reply-To: <1459368249-13241-1-git-send-email-boris.brezillon@free-electrons.com> References: <1459368249-13241-1-git-send-email-boris.brezillon@free-electrons.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160330_130514_424498_A0C9D25B X-CRM114-Status: GOOD ( 13.35 ) X-Spam-Score: -2.9 (--) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Milo Kim , Kamil Debski , Heiko Stuebner , linux-doc@vger.kernel.org, David Airlie , Mike Turquette , linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com, Alexandre Belloni , Daniel Vetter , Lee Jones , linux-clk@vger.kernel.org, linux-leds@vger.kernel.org, Boris Brezillon , Krzysztof Kozlowski , linux-samsung-soc@vger.kernel.org, Alexander Shiyan , Jonathan Corbet , Robert Jarzmik , lm-sensors@lm-sensors.org, linux-rockchip@lists.infradead.org, Chen-Yu Tsai , Tomi Valkeinen , linux-input@vger.kernel.org, Jean-Christophe Plagniol-Villard , intel-gfx@lists.freedesktop.org, Guenter Roeck , Jean Delvare , Joachim Eastwood , Bryan Wu , Jani Nikula , Mark Brown , Jacek Anaszewski , linux-arm-kernel@lists.infradead.org, Thomas Petazzoni , Ryan Mallon , Jingoo Han , Dmitry Torokhov , Stephen Boyd , Liam Girdwood , Hartley Sweeten , Richard Purdie , Kukjin Kim , Daniel Vetter , Maxime Ripard MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Before the introduction of pwm_args, the core and some drivers were resetting the PWM period and polarity states to the reference values (those provided through the DT, a PWM lookup table or hardcoded in the driver). Now that all PWM users are correctly using pwm_args to configure their PWM device, we can safely remove some pwm_set_period/polarity() calls. Signed-off-by: Boris Brezillon --- drivers/pwm/core.c | 5 ----- drivers/pwm/pwm-clps711x.c | 1 - drivers/pwm/pwm-pxa.c | 1 - 3 files changed, 7 deletions(-) diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c index cd55d61..6433059 100644 --- a/drivers/pwm/core.c +++ b/drivers/pwm/core.c @@ -147,13 +147,11 @@ of_pwm_xlate_with_flags(struct pwm_chip *pc, const struct of_phandle_args *args) return pwm; pwm->args.period = args->args[1]; - pwm_set_period(pwm, pwm->args.period); if (args->args[2] & PWM_POLARITY_INVERTED) pwm->args.polarity = PWM_POLARITY_INVERSED; else pwm->args.polarity = PWM_POLARITY_NORMAL; - pwm_set_polarity(pwm, pwm->args.polarity); return pwm; } @@ -175,7 +173,6 @@ of_pwm_simple_xlate(struct pwm_chip *pc, const struct of_phandle_args *args) return pwm; pwm->args.period = args->args[1]; - pwm_set_period(pwm, pwm->args.period); return pwm; } @@ -745,8 +742,6 @@ struct pwm_device *pwm_get(struct device *dev, const char *con_id) pwm->args.period = chosen->period; pwm->args.polarity = chosen->polarity; - pwm_set_period(pwm, chosen->period); - pwm_set_polarity(pwm, chosen->polarity); out: mutex_unlock(&pwm_lookup_lock); diff --git a/drivers/pwm/pwm-clps711x.c b/drivers/pwm/pwm-clps711x.c index 807a48d..7d33542 100644 --- a/drivers/pwm/pwm-clps711x.c +++ b/drivers/pwm/pwm-clps711x.c @@ -61,7 +61,6 @@ static int clps711x_pwm_request(struct pwm_chip *chip, struct pwm_device *pwm) /* Store constant period value */ pwm->args.period = DIV_ROUND_CLOSEST(NSEC_PER_SEC, freq); - pwm_set_period(pwm, pwm->args.period); return 0; } diff --git a/drivers/pwm/pwm-pxa.c b/drivers/pwm/pwm-pxa.c index 3fcc886..58b709f 100644 --- a/drivers/pwm/pwm-pxa.c +++ b/drivers/pwm/pwm-pxa.c @@ -161,7 +161,6 @@ pxa_pwm_of_xlate(struct pwm_chip *pc, const struct of_phandle_args *args) return pwm; pwm->args.period = args->args[0]; - pwm_set_period(pwm, args->args[0]); return pwm; }