From patchwork Mon Nov 19 18:31:01 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stephen Warren X-Patchwork-Id: 1768461 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by patchwork1.kernel.org (Postfix) with ESMTP id 923483FCAE for ; Mon, 19 Nov 2012 19:28:04 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1TaWu3-00063s-CI; Mon, 19 Nov 2012 19:21:07 +0000 Received: from casper.infradead.org ([2001:770:15f::2]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1TaWMV-0002y3-JO for linux-arm-kernel@merlin.infradead.org; Mon, 19 Nov 2012 18:46:28 +0000 Received: from avon.wwwdotorg.org ([2001:470:1f0f:bd7::2]) by casper.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1TaW82-0008T4-AY for linux-arm-kernel@lists.infradead.org; Mon, 19 Nov 2012 18:31:31 +0000 Received: from severn.wwwdotorg.org (unknown [192.168.65.5]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by avon.wwwdotorg.org (Postfix) with ESMTPS id C1CA99E9B8; Mon, 19 Nov 2012 11:32:57 -0700 (MST) Received: from swarren-lx1.nvidia.com (localhost [127.0.0.1]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by severn.wwwdotorg.org (Postfix) with ESMTPSA id C736BE40FD; Mon, 19 Nov 2012 11:31:26 -0700 (MST) From: Stephen Warren To: Russell King Subject: [PATCH V3 05/11] ARM: at91: convert timer suspend/resume to clock_event_device Date: Mon, 19 Nov 2012 11:31:01 -0700 Message-Id: <1353349867-28494-6-git-send-email-swarren@wwwdotorg.org> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1353349867-28494-1-git-send-email-swarren@wwwdotorg.org> References: <1353349867-28494-1-git-send-email-swarren@wwwdotorg.org> X-NVConfidentiality: public X-Virus-Scanned: clamav-milter 0.96.5 at avon.wwwdotorg.org X-Virus-Status: Clean X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20121119_183130_742494_2D20162E X-CRM114-Status: GOOD ( 16.87 ) X-Spam-Score: 0.5 (/) X-Spam-Report: SpamAssassin version 3.3.2 on casper.infradead.org summary: Content analysis details: (0.5 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 3.0 KHOP_BIG_TO_CC Sent to 10+ recipients instaed of Bcc or a list -0.0 SPF_PASS SPF: sender matches SPF record -0.6 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: linux-arch@vger.kernel.org, Stephen Warren , Arnd Bergmann , John Stultz , Nicolas Ferre , linux-kernel@vger.kernel.org, Olof Johansson , Thomas Gleixner , Andrew Victor , linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Stephen Warren Move at91's timer suspend/resume functions from struct sys_timer at91sam926x_timer into struct clock_event_device pit_clkevt. This will allow the sys_timer suspend/resume fields to be removed, and eventually lead to a complete removal of struct sys_timer. Cc: Andrew Victor Cc: Nicolas Ferre Acked-by: Jean-Christophe PLAGNIOL-VILLARD Signed-off-by: Stephen Warren --- arch/arm/mach-at91/at91sam926x_time.c | 47 ++++++++++++++++++--------------- 1 file changed, 26 insertions(+), 21 deletions(-) diff --git a/arch/arm/mach-at91/at91sam926x_time.c b/arch/arm/mach-at91/at91sam926x_time.c index 358412f..f7191e1 100644 --- a/arch/arm/mach-at91/at91sam926x_time.c +++ b/arch/arm/mach-at91/at91sam926x_time.c @@ -104,12 +104,38 @@ pit_clkevt_mode(enum clock_event_mode mode, struct clock_event_device *dev) } } +static void at91sam926x_pit_suspend(struct clock_event_device *cedev) +{ + /* Disable timer */ + pit_write(AT91_PIT_MR, 0); +} + +static void at91sam926x_pit_reset(void) +{ + /* Disable timer and irqs */ + pit_write(AT91_PIT_MR, 0); + + /* Clear any pending interrupts, wait for PIT to stop counting */ + while (PIT_CPIV(pit_read(AT91_PIT_PIVR)) != 0) + cpu_relax(); + + /* Start PIT but don't enable IRQ */ + pit_write(AT91_PIT_MR, (pit_cycle - 1) | AT91_PIT_PITEN); +} + +static void at91sam926x_pit_resume(struct clock_event_device *cedev) +{ + at91sam926x_pit_reset(); +} + static struct clock_event_device pit_clkevt = { .name = "pit", .features = CLOCK_EVT_FEAT_PERIODIC, .shift = 32, .rating = 100, .set_mode = pit_clkevt_mode, + .suspend = at91sam926x_pit_suspend, + .resume = at91sam926x_pit_resume, }; @@ -150,19 +176,6 @@ static struct irqaction at91sam926x_pit_irq = { .irq = NR_IRQS_LEGACY + AT91_ID_SYS, }; -static void at91sam926x_pit_reset(void) -{ - /* Disable timer and irqs */ - pit_write(AT91_PIT_MR, 0); - - /* Clear any pending interrupts, wait for PIT to stop counting */ - while (PIT_CPIV(pit_read(AT91_PIT_PIVR)) != 0) - cpu_relax(); - - /* Start PIT but don't enable IRQ */ - pit_write(AT91_PIT_MR, (pit_cycle - 1) | AT91_PIT_PITEN); -} - #ifdef CONFIG_OF static struct of_device_id pit_timer_ids[] = { { .compatible = "atmel,at91sam9260-pit" }, @@ -250,12 +263,6 @@ static void __init at91sam926x_pit_init(void) clockevents_register_device(&pit_clkevt); } -static void at91sam926x_pit_suspend(void) -{ - /* Disable timer */ - pit_write(AT91_PIT_MR, 0); -} - void __init at91sam926x_ioremap_pit(u32 addr) { #if defined(CONFIG_OF) @@ -275,6 +282,4 @@ void __init at91sam926x_ioremap_pit(u32 addr) struct sys_timer at91sam926x_timer = { .init = at91sam926x_pit_init, - .suspend = at91sam926x_pit_suspend, - .resume = at91sam926x_pit_reset, };