From patchwork Thu Mar 28 16:11:27 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rickard Andersson X-Patchwork-Id: 2357861 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by patchwork2.kernel.org (Postfix) with ESMTP id EF874DF2A1 for ; Thu, 28 Mar 2013 16:20:00 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1ULFVq-0007mG-N5; Thu, 28 Mar 2013 16:17:14 +0000 Received: from eu1sys200aog122.obsmtp.com ([207.126.144.153]) by merlin.infradead.org with smtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1ULFR2-0005rQ-BA for linux-arm-kernel@lists.infradead.org; Thu, 28 Mar 2013 16:12:21 +0000 Received: from beta.dmz-eu.st.com ([164.129.1.35]) (using TLSv1) by eu1sys200aob122.postini.com ([207.126.147.11]) with SMTP ID DSNKUVRr3JfzT1zOo92eFFBs2/rtWMpyUp3r@postini.com; Thu, 28 Mar 2013 16:12:16 UTC Received: from zeta.dmz-eu.st.com (zeta.dmz-eu.st.com [164.129.230.9]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 887D61DD; Thu, 28 Mar 2013 16:11:49 +0000 (GMT) Received: from relay2.stm.gmessaging.net (unknown [10.230.100.18]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 293215199; Thu, 28 Mar 2013 16:11:49 +0000 (GMT) Received: from exdcvycastm022.EQ1STM.local (alteon-source-exch [10.230.100.61]) (using TLSv1 with cipher RC4-MD5 (128/128 bits)) (Client CN "exdcvycastm022", Issuer "exdcvycastm022" (not verified)) by relay2.stm.gmessaging.net (Postfix) with ESMTPS id B7B19A8074; Thu, 28 Mar 2013 17:11:42 +0100 (CET) Received: from steludxu2826.lud.stericsson.com (10.230.100.153) by smtp.stericsson.com (10.230.100.30) with Microsoft SMTP Server (TLS) id 8.3.279.5; Thu, 28 Mar 2013 17:11:48 +0100 From: Rickard Andersson To: , , Subject: [PATCH V2 01/12] mfd: db8500: Add IO force function Date: Thu, 28 Mar 2013 17:11:27 +0100 Message-ID: <1364487098-10319-2-git-send-email-rickard.andersson@stericsson.com> X-Mailer: git-send-email 1.8.2 In-Reply-To: <1364487098-10319-1-git-send-email-rickard.andersson@stericsson.com> References: <1364487098-10319-1-git-send-email-rickard.andersson@stericsson.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130328_121216_653146_02C01016 X-CRM114-Status: GOOD ( 13.84 ) X-Spam-Score: -1.9 (-) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-1.9 points) pts rule name description ---- ---------------------- -------------------------------------------------- -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: hongbo.zhang@linaro.org, ulf.hansson@linaro.org, khilman@linaro.org, linus.walleij@stericsson.com, daniel.lezcano@linaro.org, rickard.andersson@stericsson.com 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org The IO force signal needs to be controlled when the system enters/exits the sleep state ApSleep. This hardware signal tells the system that some pins could be driven by GPIO settings instead of directly from the hardware block. Signed-off-by: Rickard Andersson --- drivers/mfd/db8500-prcmu.c | 9 +++++++++ include/linux/mfd/db8500-prcmu.h | 1 + include/linux/mfd/dbx500-prcmu.h | 5 +++++ 3 files changed, 15 insertions(+) diff --git a/drivers/mfd/db8500-prcmu.c b/drivers/mfd/db8500-prcmu.c index 268f45d..7f32575 100644 --- a/drivers/mfd/db8500-prcmu.c +++ b/drivers/mfd/db8500-prcmu.c @@ -879,6 +879,15 @@ bool db8500_prcmu_pending_irq(void) return false; } +void db8500_prcmu_set_ioforce(bool enable) +{ + u32 val = readl(PRCM_IOCR) & ~PRCM_IOCR_IOFORCE; + + if (enable) + val |= PRCM_IOCR_IOFORCE; + writel(val, PRCM_IOCR); +} + /* * This function checks if the specified cpu is in in WFI. It's usage * makes sense only if the gic is decoupled with the db8500_prcmu_gic_decouple diff --git a/include/linux/mfd/db8500-prcmu.h b/include/linux/mfd/db8500-prcmu.h index 6ee4247..21660f6 100644 --- a/include/linux/mfd/db8500-prcmu.h +++ b/include/linux/mfd/db8500-prcmu.h @@ -547,6 +547,7 @@ int db8500_prcmu_gic_recouple(void); int db8500_prcmu_copy_gic_settings(void); bool db8500_prcmu_gic_pending_irq(void); bool db8500_prcmu_pending_irq(void); +void db8500_prcmu_set_ioforce(bool enable); bool db8500_prcmu_is_cpu_in_wfi(int cpu); void db8500_prcmu_enable_wakeups(u32 wakeups); int db8500_prcmu_set_epod(u16 epod_id, u8 epod_state); diff --git a/include/linux/mfd/dbx500-prcmu.h b/include/linux/mfd/dbx500-prcmu.h index c202d6c..2909546 100644 --- a/include/linux/mfd/dbx500-prcmu.h +++ b/include/linux/mfd/dbx500-prcmu.h @@ -267,6 +267,11 @@ static inline bool prcmu_pending_irq(void) return db8500_prcmu_pending_irq(); } +static inline void prcmu_set_ioforce(bool force) +{ + return db8500_prcmu_set_ioforce(force); +} + static inline int prcmu_set_epod(u16 epod_id, u8 epod_state) { return db8500_prcmu_set_epod(epod_id, epod_state);