From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2EDF0C6778F for ; Thu, 26 Jul 2018 10:16:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D44F620671 for ; Thu, 26 Jul 2018 10:16:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=linaro.org header.i=@linaro.org header.b="f4aft561" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D44F620671 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729812AbeGZLck (ORCPT ); Thu, 26 Jul 2018 07:32:40 -0400 Received: from mail-wm0-f68.google.com ([74.125.82.68]:52689 "EHLO mail-wm0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729391AbeGZLcj (ORCPT ); Thu, 26 Jul 2018 07:32:39 -0400 Received: by mail-wm0-f68.google.com with SMTP id o11-v6so1396845wmh.2 for ; Thu, 26 Jul 2018 03:16:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=nZok4+MHcZ2Rmmvuy9wXzlMzMAeBIWyc64eLlpaY/ps=; b=f4aft561/IOAdqJnFPamXdJqu9t25NHwcBW8/SopBLaT9zJrBGIGb6Dfzs8S7FNdHC PMjEKVQ3YQnoFdGw4TYpJkGKVbh7XFyMPBI/fyBd4M2AdrFSvK/Wdbl1yVV9ESJL+cRm OLe0s0UsDWvkmNOgy4W8XhchgzeWaheK9IutE= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=nZok4+MHcZ2Rmmvuy9wXzlMzMAeBIWyc64eLlpaY/ps=; b=UEY3ybafnOkpgzcXBvrRPAJx4kfOeHnneqoBeZwLt4HC9QHSyfuLwxGTOIBsxlNJI/ q0Givkq3lJXL375/jKVFfBWxYd1Guut4VzQwsY44b2nbffJAbVuQhw80GF9AipEcEIVL 8eUPuZzkD2z5zAegOx2hcEF86iftZAcskSHe60HNyxyVUQvOYlYIsBO1+pKjSoE4r8Tq DARvVptraomiKbRbACJbfxxdcU2UkE/pe61aHZmttbQ8WzDDvL6mRvV/tE58wFlH8VC7 xkjKUQnru0xDeeuLslD8jtRSzMQGLuFlEEtQnWCmHjFWF4xngb+uU0UvPQplud7dJnCg G2iw== X-Gm-Message-State: AOUpUlGgEVp7XJN5jI+uS8cm3kfi1gq0MizmAVS4RYJMPZMbgOO9FDYf NasnYs1ojhQD431uxFmk8loScA== X-Google-Smtp-Source: AAOMgpdFnFoi86dxU3XzRSReRmKX3YX8VBRtAnsvXZCvfATEBlWSBSxJHOMpNeC18/VkTh/F1qY3JQ== X-Received: by 2002:a1c:80b:: with SMTP id 11-v6mr1204834wmi.125.1532600188821; Thu, 26 Jul 2018 03:16:28 -0700 (PDT) Received: from localhost.localdomain ([2a01:e35:879a:6cd0:35bd:fbdf:74b5:3f51]) by smtp.gmail.com with ESMTPSA id f6-v6sm957303wrp.30.2018.07.26.03.16.27 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 26 Jul 2018 03:16:27 -0700 (PDT) From: Daniel Lezcano To: tglx@linutronix.de, mingo@kernel.org Cc: linux-kernel@vger.kernel.org, stanley.chu@mediatek.com, baolin.wang@linaro.org, Sudeep.Holla@arm.com, Orson Zhai , Chunyan Zhang Subject: [PATCH 7/7] clocksource/drivers/sprd: Register one always-on timer to compensate suspend time Date: Thu, 26 Jul 2018 12:15:30 +0200 Message-Id: <1532600131-28168-7-git-send-email-daniel.lezcano@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1532600131-28168-1-git-send-email-daniel.lezcano@linaro.org> References: <014f94f9-54d4-1ee0-aa89-67ca5d221989@free.fr> <1532600131-28168-1-git-send-email-daniel.lezcano@linaro.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Baolin Wang Since the clocksource framework has introduced one suspend clocksource to compensate the suspend time, this patch registers one always-on timer as the suspend clocksource. Signed-off-by: Baolin Wang Signed-off-by: Daniel Lezcano --- drivers/clocksource/timer-sprd.c | 50 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) diff --git a/drivers/clocksource/timer-sprd.c b/drivers/clocksource/timer-sprd.c index ef9ebea..430cb99 100644 --- a/drivers/clocksource/timer-sprd.c +++ b/drivers/clocksource/timer-sprd.c @@ -156,4 +156,54 @@ static int __init sprd_timer_init(struct device_node *np) return 0; } +static struct timer_of suspend_to = { + .flags = TIMER_OF_BASE | TIMER_OF_CLOCK, +}; + +static u64 sprd_suspend_timer_read(struct clocksource *cs) +{ + return ~(u64)readl_relaxed(timer_of_base(&suspend_to) + + TIMER_VALUE_SHDW_LO) & cs->mask; +} + +static int sprd_suspend_timer_enable(struct clocksource *cs) +{ + sprd_timer_update_counter(timer_of_base(&suspend_to), + TIMER_VALUE_LO_MASK); + sprd_timer_enable(timer_of_base(&suspend_to), TIMER_CTL_PERIOD_MODE); + + return 0; +} + +static void sprd_suspend_timer_disable(struct clocksource *cs) +{ + sprd_timer_disable(timer_of_base(&suspend_to)); +} + +static struct clocksource suspend_clocksource = { + .name = "sprd_suspend_timer", + .rating = 200, + .read = sprd_suspend_timer_read, + .enable = sprd_suspend_timer_enable, + .disable = sprd_suspend_timer_disable, + .mask = CLOCKSOURCE_MASK(32), + .flags = CLOCK_SOURCE_IS_CONTINUOUS | CLOCK_SOURCE_SUSPEND_NONSTOP, +}; + +static int __init sprd_suspend_timer_init(struct device_node *np) +{ + int ret; + + ret = timer_of_init(np, &suspend_to); + if (ret) + return ret; + + clocksource_register_hz(&suspend_clocksource, + timer_of_rate(&suspend_to)); + + return 0; +} + TIMER_OF_DECLARE(sc9860_timer, "sprd,sc9860-timer", sprd_timer_init); +TIMER_OF_DECLARE(sc9860_persistent_timer, "sprd,sc9860-suspend-timer", + sprd_suspend_timer_init); -- 2.7.4