From patchwork Thu Jan 29 06:38:55 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wenyou Yang X-Patchwork-Id: 5737661 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 [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 65F929F38B for ; Thu, 29 Jan 2015 06:43:14 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id B339B2021B for ; Thu, 29 Jan 2015 06:43:12 +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 EA56A20142 for ; Thu, 29 Jan 2015 06:43:11 +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 1YGinC-00039I-0F; Thu, 29 Jan 2015 06:41:30 +0000 Received: from eusmtp01.atmel.com ([212.144.249.242]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1YGin8-0002bt-VP for linux-arm-kernel@lists.infradead.org; Thu, 29 Jan 2015 06:41:27 +0000 Received: from apsmtp01.atmel.com (10.168.254.30) by eusmtp01.atmel.com (10.161.101.30) with Microsoft SMTP Server id 14.2.347.0; Thu, 29 Jan 2015 07:40:59 +0100 Received: from shaarm01.corp.atmel.com (10.168.254.13) by apsmtp01.corp.atmel.com (10.168.254.30) with Microsoft SMTP Server id 14.2.347.0; Thu, 29 Jan 2015 14:42:35 +0800 From: Wenyou Yang To: , Subject: [PATCH v5 05/13] pm: at91: move the copying the sram function to the sram initializationi phase Date: Thu, 29 Jan 2015 14:38:55 +0800 Message-ID: <1422513535-23885-1-git-send-email-wenyou.yang@atmel.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1422513316-21509-1-git-send-email-wenyou.yang@atmel.com> References: <1422513316-21509-1-git-send-email-wenyou.yang@atmel.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150128_224127_392061_9EE591BD X-CRM114-Status: UNSURE ( 9.45 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -0.7 (/) Cc: sergei.shtylyov@cogentembedded.com, sylvain.rochet@finsecur.com, linux-kernel@vger.kernel.org, linux@maxim.org.za, alexandre.belloni@free-electrons.com, wenyou.yang@atmel.com, peda@axentia.se, 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, 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 decrease the suspend time, move the copying the sram function to the sram initialization phase, instead of every time go to suspend. In the meanwhile, if there is no sram allocated for PM, the PM is not supported. Signed-off-by: Wenyou Yang Acked-by: Alexandre Belloni --- arch/arm/mach-at91/pm.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c index daa998d..6df0152 100644 --- a/arch/arm/mach-at91/pm.c +++ b/arch/arm/mach-at91/pm.c @@ -163,10 +163,6 @@ static int at91_pm_enter(suspend_state_t state) * turning off the main oscillator; reverse on wakeup. */ if (slow_clock) { -#ifdef CONFIG_AT91_SLOW_CLOCK - /* copy slow_clock handler to SRAM, and call it */ - memcpy(slow_clock, at91_slow_clock, at91_slow_clock_sz); -#endif slow_clock(at91_pmc_base, at91_ramc_base[0], at91_ramc_base[1], at91_pm_data.memctrl); @@ -311,6 +307,9 @@ static void __init at91_pm_sram_init(void) sram_pbase = gen_pool_virt_to_phys(sram_pool, sram_base); slow_clock = __arm_ioremap_exec(sram_pbase, at91_slow_clock_sz, false); + /* Copy the slow_clock handler to SRAM */ + memcpy(slow_clock, at91_slow_clock, at91_slow_clock_sz); + put_node: of_node_put(node); } @@ -328,7 +327,10 @@ static void __init at91_pm_init(void) if (at91_cpuidle_device.dev.platform_data) platform_device_register(&at91_cpuidle_device); - suspend_set_ops(&at91_pm_ops); + if (slow_clock) + suspend_set_ops(&at91_pm_ops); + else + pr_info("AT91: PM : Not supported, due to no sram allocated\n"); } void __init at91rm9200_pm_init(void)