From patchwork Tue Oct 14 07:15:40 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ulf Hansson X-Patchwork-Id: 5078641 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 [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 329E59F349 for ; Tue, 14 Oct 2014 07:20:11 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 69BE720154 for ; Tue, 14 Oct 2014 07:20:10 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 94E5520142 for ; Tue, 14 Oct 2014 07:20:09 +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 1XdwMu-0000Xj-5j; Tue, 14 Oct 2014 07:18:04 +0000 Received: from mail-la0-f44.google.com ([209.85.215.44]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1XdwLK-000812-7b for linux-arm-kernel@lists.infradead.org; Tue, 14 Oct 2014 07:16:26 +0000 Received: by mail-la0-f44.google.com with SMTP id hs14so7995023lab.3 for ; Tue, 14 Oct 2014 00:16:08 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=Dy6drD0zEmNQ9qaqPrXqPz8VeGNoBU4rqXC6rLXdrU0=; b=ddYYR6I8iXsyESmIl3ae/5iha4WdhrjxqAyz3IJMSNqchM0UyL3lj9mTeHoL0QVMUA YWA8A7dil98/m9z4UCdIPIq0kf1m9raF7uNXYrexKuqz89zwA65KrNMLKIgASVrrWfCE 13N5LtQI+53x2hnBQZvq7iIJEQJ9b3rx2JreniVJG4rbvoNr4suVVKkfgxpw9Uil9ij5 9GVezn4IPmBM/91JjnL+w0zoIqr/6jNIrICzwxVPQiOhOxHSvzfwtyvcdoEkRxhZxGXg C8LaVTQlRqgEzZD1CkSOytfSF1OeX3SGrIyqa1o7kHh6Xnm2CnafH7hKyIG/lYlCY4Ri 1UNw== X-Gm-Message-State: ALoCoQm3KODgFicCa1c+vluSbnmTrdTAdVyek9jlLcSwC55dhVWjtvHAcD52/Vdi9doC2VjDueMY X-Received: by 10.152.21.170 with SMTP id w10mr3391908lae.9.1413270968904; Tue, 14 Oct 2014 00:16:08 -0700 (PDT) Received: from uffe-Latitude-E6430s.lan (90-231-160-185-no158.tbcn.telia.com. [90.231.160.185]) by mx.google.com with ESMTPSA id a2sm5279497lbs.21.2014.10.14.00.16.06 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 14 Oct 2014 00:16:08 -0700 (PDT) From: Ulf Hansson To: Mauro Carvalho Chehab , linux-media@vger.kernel.org Subject: [PATCH 7/7] [media] exynos-gsc: Do full clock gating at runtime PM suspend Date: Tue, 14 Oct 2014 09:15:40 +0200 Message-Id: <1413270940-4378-8-git-send-email-ulf.hansson@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1413270940-4378-1-git-send-email-ulf.hansson@linaro.org> References: <1413270940-4378-1-git-send-email-ulf.hansson@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20141014_001626_481627_4CE9612F X-CRM114-Status: GOOD ( 11.78 ) X-Spam-Score: -0.7 (/) Cc: Ulf Hansson , Kevin Hilman , Sylwester Nawrocki , Geert Uytterhoeven , linux-pm@vger.kernel.org, Pavel Machek , "Rafael J. Wysocki" , Tomasz Figa , linux-samsung-soc@vger.kernel.org, Philipp Zabel , Kukjin Kim , linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_NONE, 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 To potentially save more power in runtime PM suspend state, let's also prepare/unprepare the clock from the runtime PM callbacks. Signed-off-by: Ulf Hansson --- drivers/media/platform/exynos-gsc/gsc-core.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/media/platform/exynos-gsc/gsc-core.c b/drivers/media/platform/exynos-gsc/gsc-core.c index e48aefa..e90ba09 100644 --- a/drivers/media/platform/exynos-gsc/gsc-core.c +++ b/drivers/media/platform/exynos-gsc/gsc-core.c @@ -1161,7 +1161,7 @@ static int gsc_runtime_resume(struct device *dev) pr_debug("gsc%d: state: 0x%lx", gsc->id, gsc->state); - ret = clk_enable(gsc->clock); + ret = clk_prepare_enable(gsc->clock); if (ret) return ret; @@ -1179,7 +1179,7 @@ static int gsc_runtime_suspend(struct device *dev) ret = gsc_m2m_suspend(gsc); if (!ret) - clk_disable(gsc->clock); + clk_disable_unprepare(gsc->clock); pr_debug("gsc%d: state: 0x%lx", gsc->id, gsc->state); return ret;