From patchwork Tue Mar 21 16:31:12 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: fu.wei@linaro.org X-Patchwork-Id: 9637083 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 2B424602CC for ; Tue, 21 Mar 2017 16:32:49 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1A04528304 for ; Tue, 21 Mar 2017 16:32:49 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0D93C28338; Tue, 21 Mar 2017 16:32:49 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [65.50.211.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 958AF28304 for ; Tue, 21 Mar 2017 16:32:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=nDgD5tKn8atgXW2MARjRDM4+x1pZwgaQnIZ4TRiQ6ts=; b=HZ/wOm6w+mazDlSI6/p0qQUqpZ NwxwHiC35MvEiIcgxkxvNtXA7bwtjb8FT7dAEU9uNU/DFSZZA2FIMP3GqfdxRvIZtVNVf4FNjlSTd D4jL9EKhlEj2XWqDceM16ow3tUHjVr94eBNKDkXJfLrqzJkemuVYEUiW83vSD8smg7L9/BowY17bm I+xfMcsh1tJ4NevaYO41vnojAw1lNtuRT0PN0jpZBA1MlVz7HqiUsmKJaI8hyrO7TYyAqWzIM/9AU OO3NfuCQKndhqz14KLWMQQiHrC0tsTYzBZkWqDdcJAkaazZjBuRc17zSn8Azq19ndHB8kuFTwcXhR 4fPOQjUQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1cqMiG-00054X-9Y; Tue, 21 Mar 2017 16:32:48 +0000 Received: from mx1.redhat.com ([209.132.183.28]) by bombadil.infradead.org with esmtps (Exim 4.87 #1 (Red Hat Linux)) id 1cqMiB-0004kE-6z for linux-arm-kernel@lists.infradead.org; Tue, 21 Mar 2017 16:32:45 +0000 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id E888B437F48; Tue, 21 Mar 2017 16:32:24 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com E888B437F48 Authentication-Results: ext-mx05.extmail.prod.ext.phx2.redhat.com; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: ext-mx05.extmail.prod.ext.phx2.redhat.com; spf=fail smtp.mailfrom=fu.wei@linaro.org DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com E888B437F48 Received: from Rei-Ayanami.localdomain.com (ovpn-8-64.pek2.redhat.com [10.72.8.64]) by smtp.corp.redhat.com (Postfix) with ESMTP id C40A97B153; Tue, 21 Mar 2017 16:32:08 +0000 (UTC) From: fu.wei@linaro.org To: rjw@rjwysocki.net, lenb@kernel.org, daniel.lezcano@linaro.org, tglx@linutronix.de, marc.zyngier@arm.com, mark.rutland@arm.com, lorenzo.pieralisi@arm.com, sudeep.holla@arm.com, hanjun.guo@linaro.org Subject: [PATCH v22 01/11] clocksource: arm_arch_timer: introduce a wrapper function to get the frequency from mmio. Date: Wed, 22 Mar 2017 00:31:12 +0800 Message-Id: <20170321163122.9183-2-fu.wei@linaro.org> In-Reply-To: <20170321163122.9183-1-fu.wei@linaro.org> References: <20170321163122.9183-1-fu.wei@linaro.org> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.29]); Tue, 21 Mar 2017 16:32:25 +0000 (UTC) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20170321_093243_311916_94BD787B X-CRM114-Status: GOOD ( 11.51 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linaro-acpi@lists.linaro.org, catalin.marinas@arm.com, will.deacon@arm.com, linux-kernel@vger.kernel.org, wim@iguana.be, Fu Wei , wei@redhat.com, al.stone@linaro.org, tn@semihalf.com, timur@codeaurora.org, linux-acpi@vger.kernel.org, linux@roeck-us.net, harba@codeaurora.org, julien.grall@arm.com, linux-watchdog@vger.kernel.org, arnd@arndb.de, jcm@redhat.com, cov@codeaurora.org, linux-arm-kernel@lists.infradead.org, graeme.gregory@linaro.org, rruigrok@codeaurora.org, leo.duran@amd.com, Suravee.Suthikulpanit@amd.com, christoffer.dall@linaro.org 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 From: Fu Wei The patch introduce a new functions: arch_timer_mem_get_cntfrq, and applies it in arch_timer_detect_rate. This function will be used for getting the frequency from mmio to prepare for reworking counter frequency detection. Signed-off-by: Fu Wei --- drivers/clocksource/arm_arch_timer.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c index 3faed19..843f923 100644 --- a/drivers/clocksource/arm_arch_timer.c +++ b/drivers/clocksource/arm_arch_timer.c @@ -555,6 +555,11 @@ static int arch_timer_starting_cpu(unsigned int cpu) return 0; } +static u32 arch_timer_mem_get_cntfrq(void __iomem *cntbase) +{ + return readl_relaxed(cntbase + CNTFRQ); +} + static void arch_timer_detect_rate(void __iomem *cntbase, struct device_node *np) { @@ -569,7 +574,7 @@ arch_timer_detect_rate(void __iomem *cntbase, struct device_node *np) if (!acpi_disabled || of_property_read_u32(np, "clock-frequency", &arch_timer_rate)) { if (cntbase) - arch_timer_rate = readl_relaxed(cntbase + CNTFRQ); + arch_timer_rate = arch_timer_mem_get_cntfrq(cntbase); else arch_timer_rate = arch_timer_get_cntfrq(); }