From patchwork Fri Jul 5 22:18:39 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Ripard X-Patchwork-Id: 2824408 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 23576C0AB2 for ; Fri, 5 Jul 2013 22:22:28 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 5038E20182 for ; Fri, 5 Jul 2013 22:22:27 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 47EC82017E for ; Fri, 5 Jul 2013 22:22:26 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UvEMI-00055M-Gv; Fri, 05 Jul 2013 22:20:07 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1UvELw-0008RB-AH; Fri, 05 Jul 2013 22:19:44 +0000 Received: from mail.free-electrons.com ([94.23.35.102]) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1UvELR-0008LL-37 for linux-arm-kernel@lists.infradead.org; Fri, 05 Jul 2013 22:19:15 +0000 Received: by mail.free-electrons.com (Postfix, from userid 106) id 396EA835; Sat, 6 Jul 2013 00:18:48 +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=-4.4 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from localhost (189.58.26.109.rev.sfr.net [109.26.58.189]) by mail.free-electrons.com (Postfix) with ESMTPSA id 9A3387BF; Sat, 6 Jul 2013 00:18:48 +0200 (CEST) From: Maxime Ripard To: John Stultz , Thomas Gleixner Subject: [PATCHv4 04/10] clocksource: sun4i: Add clocksource and sched clock drivers Date: Sat, 6 Jul 2013 00:18:39 +0200 Message-Id: <1373062725-19625-5-git-send-email-maxime.ripard@free-electrons.com> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1373062725-19625-1-git-send-email-maxime.ripard@free-electrons.com> References: <1373062725-19625-1-git-send-email-maxime.ripard@free-electrons.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130705_181913_343748_6A52085B X-CRM114-Status: GOOD ( 10.64 ) X-Spam-Score: -2.1 (--) Cc: Emilio Lopez , linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com, kevin.z.m.zh@gmail.com, sunny@allwinnertech.com, shuge@allwinnertech.com, Maxime Ripard , linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 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-Virus-Scanned: ClamAV using ClamSMTP Use the second timer found on the Allwinner SoCs as a clock source and sched clock, that were both not used yet on these platforms. Signed-off-by: Maxime Ripard --- drivers/clocksource/sun4i_timer.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/clocksource/sun4i_timer.c b/drivers/clocksource/sun4i_timer.c index f5e227b..b581c93 100644 --- a/drivers/clocksource/sun4i_timer.c +++ b/drivers/clocksource/sun4i_timer.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include #include @@ -96,6 +97,11 @@ static struct irqaction sun4i_timer_irq = { .dev_id = &sun4i_clockevent, }; +static u32 sun4i_timer_sched_read(void) +{ + return ~readl(timer_base + TIMER_CNTVAL_REG(1)); +} + static void __init sun4i_timer_init(struct device_node *node) { unsigned long rate = 0; @@ -117,6 +123,15 @@ static void __init sun4i_timer_init(struct device_node *node) rate = clk_get_rate(clk); + writel(~0, timer_base + TIMER_INTVAL_REG(1)); + writel(TIMER_CTL_ENABLE | TIMER_CTL_RELOAD | + TIMER_CTL_CLK_SRC(TIMER_CTL_CLK_SRC_OSC24M), + timer_base + TIMER_CTL_REG(1)); + + setup_sched_clock(sun4i_timer_sched_read, 32, rate); + clocksource_mmio_init(timer_base + TIMER_CNTVAL_REG(1), node->name, + rate, 300, 32, clocksource_mmio_readl_down); + writel(rate / (TIMER_SCAL * HZ), timer_base + TIMER_INTVAL_REG(0));