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=-13.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 1BD86C433DF for ; Thu, 6 Aug 2020 18:27:09 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5B80023106 for ; Thu, 6 Aug 2020 18:27:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="Juk6xOjX"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="VHn+t9EE" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5B80023106 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:MIME-Version:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:References:In-Reply-To:Message-Id:Date:Subject:To: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=LMCTss8hO4A8PZ29F2gcc5V5KHsPZxORws3LK2zHCUo=; b=Juk6xOjXVczo7L/oOPpc2pZMEd A1BtIYAbH2xAPhGmUk0vDAzj4mtNUC3LgtHs0r+msYUIBdmimqwtMwZF5lSt1yJA7LdCKAaKhruoF qmikE08wEbBw0Ood6+HRMyuK0Zp9xNnrrijO+heuFQFgRh1E/znD9uHem/xwsZIPf5GgCOZLC/jTM GTLfl/XO01rfrOfiMgvX7X6Gf2b5xYYSm7jUqf+BqMr7MoBLpfDpJlHDtHzeB7R0tDJWdQcHv8rQc O/QB5Vp+LWxGy5iTHmd8ia+jQQ1cDnK6CE4TdGEz30DRCuuRMIOMr6zZlWW5m1y1eqATGmmGfqBu8 bJuPOZug==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1k3kZL-0001GO-9B; Thu, 06 Aug 2020 18:24:47 +0000 Received: from mail.kernel.org ([198.145.29.99]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1k3kXQ-0008Kw-LT for linux-arm-kernel@lists.infradead.org; Thu, 06 Aug 2020 18:22:51 +0000 Received: from localhost.localdomain (unknown [194.230.155.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 459DD22D72; Thu, 6 Aug 2020 18:22:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1596738167; bh=eC8+pdiOP0SN41WUeXwn8RHaqXAyWuLR/6yLOdAxbuk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VHn+t9EEdJVdosmd7F/izmV/f/BVJ2cqpO/rOXPJA+hkWnTb+ZcHGrmO09n3zqq00 cEZgOxnbH50Oz/fzhKpLLQL6S+SfioSMmFDm6iI8IBuS9MA7Eev/PZZ7uyPmHDHbnC Kp5ilhF0X14zo6b3c/21m8qfQP2BgvBkw8gI1mIY= From: Krzysztof Kozlowski To: linux-kernel@vger.kernel.org Subject: [PATCH v2 17/41] ARM: s5pv210: use private pm save/restore Date: Thu, 6 Aug 2020 20:20:34 +0200 Message-Id: <20200806182059.2431-17-krzk@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200806181932.2253-1-krzk@kernel.org> References: <20200806181932.2253-1-krzk@kernel.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200806_142248_881889_2B72735D X-CRM114-Status: GOOD ( 21.79 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-samsung-soc@vger.kernel.org, Arnd Bergmann , Russell King , Krzysztof Kozlowski , Kyungmin Park , Kukjin Kim , linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Arnd Bergmann The pm save/restore code is fairly small, so in order to separate the s3c and s5p platforms, adding an s5p specific copy instead of sharing it is actually easier. Signed-off-by: Arnd Bergmann Signed-off-by: Krzysztof Kozlowski --- arch/arm/mach-s5pv210/Makefile | 7 ----- arch/arm/mach-s5pv210/pm.c | 45 ++++++++++++++++++++++++++++-- arch/arm/mach-s5pv210/regs-clock.h | 4 ++- arch/arm/mach-s5pv210/s5pv210.c | 2 -- arch/arm/plat-samsung/Makefile | 3 +- 5 files changed, 47 insertions(+), 14 deletions(-) diff --git a/arch/arm/mach-s5pv210/Makefile b/arch/arm/mach-s5pv210/Makefile index e7b551e18e5c..aa0a1f091daf 100644 --- a/arch/arm/mach-s5pv210/Makefile +++ b/arch/arm/mach-s5pv210/Makefile @@ -3,12 +3,5 @@ # Copyright (c) 2010 Samsung Electronics Co., Ltd. # http://www.samsung.com/ -ccflags-$(CONFIG_ARCH_MULTIPLATFORM) += -I$(srctree)/arch/arm/plat-samsung/include - -# Core - obj-$(CONFIG_PM_SLEEP) += pm.o sleep.o - -# machine support - obj-y += s5pv210.o diff --git a/arch/arm/mach-s5pv210/pm.c b/arch/arm/mach-s5pv210/pm.c index efdb5a27c060..d59c094cdea8 100644 --- a/arch/arm/mach-s5pv210/pm.c +++ b/arch/arm/mach-s5pv210/pm.c @@ -13,15 +13,56 @@ #include #include #include +#include #include #include -#include - #include "common.h" #include "regs-clock.h" +/* helper functions to save and restore register state */ +struct sleep_save { + void __iomem *reg; + unsigned long val; +}; + +#define SAVE_ITEM(x) \ + { .reg = (x) } + +/** + * s3c_pm_do_save() - save a set of registers for restoration on resume. + * @ptr: Pointer to an array of registers. + * @count: Size of the ptr array. + * + * Run through the list of registers given, saving their contents in the + * array for later restoration when we wakeup. + */ +static void s3c_pm_do_save(struct sleep_save *ptr, int count) +{ + for (; count > 0; count--, ptr++) { + ptr->val = readl_relaxed(ptr->reg); + S3C_PMDBG("saved %p value %08lx\n", ptr->reg, ptr->val); + } +} + +/** + * s3c_pm_do_restore() - restore register values from the save list. + * @ptr: Pointer to an array of registers. + * @count: Size of the ptr array. + * + * Restore the register values saved from s3c_pm_do_save(). + * + * WARNING: Do not put any debug in here that may effect memory or use + * peripherals, as things may be changing! +*/ + +static void s3c_pm_do_restore_core(const struct sleep_save *ptr, int count) +{ + for (; count > 0; count--, ptr++) + writel_relaxed(ptr->val, ptr->reg); +} + static struct sleep_save s5pv210_core_save[] = { /* Clock ETC */ SAVE_ITEM(S5P_MDNIE_SEL), diff --git a/arch/arm/mach-s5pv210/regs-clock.h b/arch/arm/mach-s5pv210/regs-clock.h index 2a35c831a9b0..9cad2306e470 100644 --- a/arch/arm/mach-s5pv210/regs-clock.h +++ b/arch/arm/mach-s5pv210/regs-clock.h @@ -9,7 +9,9 @@ #ifndef __ASM_ARCH_REGS_CLOCK_H #define __ASM_ARCH_REGS_CLOCK_H __FILE__ -#include +#define S3C_ADDR_BASE 0xF6000000 +#define S3C_ADDR(x) ((void __iomem __force *)S3C_ADDR_BASE + (x)) +#define S3C_VA_SYS S3C_ADDR(0x00100000) #define S5P_CLKREG(x) (S3C_VA_SYS + (x)) diff --git a/arch/arm/mach-s5pv210/s5pv210.c b/arch/arm/mach-s5pv210/s5pv210.c index 868f9c20419d..a21ed3bb992a 100644 --- a/arch/arm/mach-s5pv210/s5pv210.c +++ b/arch/arm/mach-s5pv210/s5pv210.c @@ -13,8 +13,6 @@ #include #include -#include - #include "common.h" #include "regs-clock.h" diff --git a/arch/arm/plat-samsung/Makefile b/arch/arm/plat-samsung/Makefile index c47f58ed83e2..feddb42cae51 100644 --- a/arch/arm/plat-samsung/Makefile +++ b/arch/arm/plat-samsung/Makefile @@ -24,8 +24,7 @@ obj-$(CONFIG_GPIO_SAMSUNG) += gpio-samsung.o # PM support -obj-$(CONFIG_PM_SLEEP) += pm-common.o -obj-$(CONFIG_SAMSUNG_PM) += pm.o +obj-$(CONFIG_SAMSUNG_PM) += pm.o pm-common.o obj-$(CONFIG_SAMSUNG_PM_GPIO) += pm-gpio.o obj-$(CONFIG_SAMSUNG_WAKEMASK) += wakeup-mask.o -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel