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[2001:1868:205::9]) by mx.google.com with ESMTPS id n63si16849647pfg.16.2016.12.05.17.34.19 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 05 Dec 2016 17:34:19 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org designates 2001:1868:205::9 as permitted sender) client-ip=2001:1868:205::9; Authentication-Results: mx.google.com; dkim=neutral (body hash did not verify) header.i=@linaro.org; spf=pass (google.com: best guess record for domain of linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org designates 2001:1868:205::9 as permitted sender) smtp.mailfrom=linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org; dmarc=fail (p=NONE dis=NONE) header.from=linaro.org Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1cE4cT-00042S-B9; Tue, 06 Dec 2016 01:32:33 +0000 Received: from mail-pf0-x234.google.com ([2607:f8b0:400e:c00::234]) by bombadil.infradead.org with esmtps (Exim 4.85_2 #1 (Red Hat Linux)) id 1cE4cL-0003zO-HC for linux-arm-kernel@lists.infradead.org; Tue, 06 Dec 2016 01:32:28 +0000 Received: by mail-pf0-x234.google.com with SMTP id c4so66791354pfb.1 for ; Mon, 05 Dec 2016 17:32:02 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id; bh=SMGOl7hJSZr/B1g0IfqLCviE8KX27WUyavDx6JYY7uc=; b=jlzgBOMo0Tyu+wi/1FxFKD/7pF9jWSREUE/1yGK2tUFgfYZEYbqz+h9oZJMKqvBHu7 n4ECzT97KgplucXxq3zlyDbzIopwN09TOYaTIaYj6eyRme78eqOut6T/ckp1qINfzWPe Oz9pRxAw08NBK3/vYOYnfoqEiOxE3qDrHk210= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=SMGOl7hJSZr/B1g0IfqLCviE8KX27WUyavDx6JYY7uc=; b=Meq/lxDJ1vM8bQZvU7WxqdcrUK3OYzl5o/5SV+3HEn7n45yLCR/WdmdMy/4qi1SzNc 8xxbt0jrXazqXs1ty8EuRidixbAlwRjHWk/zFIwOfX5LFZJEt4mfQNHhOtTudee7SZKs nHL+jk4p2k2V1uE0SfTBgjoEIr2PfTsbSWJ/cgIa2/iDm3mSNSZD5nvtKJV370eDEZnx P++FhGrOfnjklnqZGo94Rk9DkGV/GW5+42bkzuyxyJY0yETxL79evwL1CvWm8LMAMIiB BqmgiY9tIGA4idXT0mzbEvSnlCoeu64mAto1H/4fzvaite8q5lgtBroJBhUqujgIQDmh oTNg== X-Gm-Message-State: AKaTC02s4BJGMNfLg3wCyHdnW4eYSNJltfrCHQN03VZPK/6T2Yw/J3NCWDoBQBklaSW4Hbtw X-Received: by 10.99.62.13 with SMTP id l13mr107823365pga.112.1480987922376; Mon, 05 Dec 2016 17:32:02 -0800 (PST) Received: from localhost.localdomain ([104.237.91.152]) by smtp.gmail.com with ESMTPSA id s5sm30267113pgj.19.2016.12.05.17.31.48 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 05 Dec 2016 17:32:01 -0800 (PST) From: Baoyou Xie To: jun.nie@linaro.org, oss@buserror.net, krzk@kernel.org, arnd@arndb.de, ulf.hansson@linaro.org, scott.branden@broadcom.com, yangbo.lu@nxp.com, f.fainelli@gmail.com, alex.aring@gmail.com, claudiu.manoil@nxp.com, qiang.zhao@freescale.com, pankaj.dubey@samsung.com, rmk+kernel@arm.linux.org.uk, geert+renesas@glider.be Subject: [PATCH v2 1/2] soc: zte: pm_domains: Prepare for supporting ARMv8 2967 family Date: Tue, 6 Dec 2016 09:30:27 +0800 Message-Id: <1480987828-20549-1-git-send-email-baoyou.xie@linaro.org> X-Mailer: git-send-email 2.7.4 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20161205_173225_795346_64014F0B X-CRM114-Status: GOOD ( 19.65 ) X-Spam-Score: -2.7 (--) X-Spam-Report: SpamAssassin version 3.4.0 on bombadil.infradead.org summary: Content analysis details: (-2.7 points) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 HK_RANDOM_ENVFROM Envelope sender username looks random 0.0 HK_RANDOM_FROM From username looks random 0.0 URIBL_RED Contains an URL listed in the URIBL redlist [URIs: zte.com.cn] -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [2607:f8b0:400e:c00:0:0:0:234 listed in] [list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: xie.baoyou@zte.com.cn, linux-kernel@vger.kernel.org, chen.chaokai@zte.com.cn, wang.qiang01@zte.com.cn, baoyou.xie@linaro.org, shawnguo@kernel.org, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org The ARMv8 2967 family (296718, 296716 etc) uses different value for controlling the power domain on/off registers, Choose the value depending on the compatible. Multiple domains are prepared for the family, they'are privated by the drivers of boards. This patch prepares the common functions. Signed-off-by: Baoyou Xie --- drivers/soc/Kconfig | 1 + drivers/soc/Makefile | 1 + drivers/soc/zte/Kconfig | 13 ++++ drivers/soc/zte/Makefile | 4 ++ drivers/soc/zte/pm_domains.c | 140 +++++++++++++++++++++++++++++++++++++++++++ drivers/soc/zte/pm_domains.h | 41 +++++++++++++ 6 files changed, 200 insertions(+) create mode 100644 drivers/soc/zte/Kconfig create mode 100644 drivers/soc/zte/Makefile create mode 100644 drivers/soc/zte/pm_domains.c create mode 100644 drivers/soc/zte/pm_domains.h -- 2.7.4 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel diff --git a/drivers/soc/Kconfig b/drivers/soc/Kconfig index f31bceb..f09023f 100644 --- a/drivers/soc/Kconfig +++ b/drivers/soc/Kconfig @@ -11,5 +11,6 @@ source "drivers/soc/tegra/Kconfig" source "drivers/soc/ti/Kconfig" source "drivers/soc/ux500/Kconfig" source "drivers/soc/versatile/Kconfig" +source "drivers/soc/zte/Kconfig" endmenu diff --git a/drivers/soc/Makefile b/drivers/soc/Makefile index 50c23d0..05eae52 100644 --- a/drivers/soc/Makefile +++ b/drivers/soc/Makefile @@ -16,3 +16,4 @@ obj-$(CONFIG_ARCH_TEGRA) += tegra/ obj-$(CONFIG_SOC_TI) += ti/ obj-$(CONFIG_ARCH_U8500) += ux500/ obj-$(CONFIG_PLAT_VERSATILE) += versatile/ +obj-$(CONFIG_ARCH_ZX) += zte/ diff --git a/drivers/soc/zte/Kconfig b/drivers/soc/zte/Kconfig new file mode 100644 index 0000000..4953c3fa --- /dev/null +++ b/drivers/soc/zte/Kconfig @@ -0,0 +1,13 @@ +# +# zx SoC drivers +# +menuconfig SOC_ZX + bool "zx SoC driver support" + +if SOC_ZX + +config ZX_PM_DOMAINS + bool "zx PM domains" + depends on PM_GENERIC_DOMAINS + +endif diff --git a/drivers/soc/zte/Makefile b/drivers/soc/zte/Makefile new file mode 100644 index 0000000..97ac8ea --- /dev/null +++ b/drivers/soc/zte/Makefile @@ -0,0 +1,4 @@ +# +# zx SOC drivers +# +obj-$(CONFIG_ZX_PM_DOMAINS) += pm_domains.o diff --git a/drivers/soc/zte/pm_domains.c b/drivers/soc/zte/pm_domains.c new file mode 100644 index 0000000..956c963 --- /dev/null +++ b/drivers/soc/zte/pm_domains.c @@ -0,0 +1,140 @@ +/* + * Copyright (C) 2015 ZTE Ltd. + * + * Author: Baoyou Xie + * License terms: GNU General Public License (GPL) version 2 + */ +#include +#include +#include +#include +#include "pm_domains.h" + +#define PCU_DM_CLKEN(zpd) ((zpd)->reg_offset[REG_CLKEN]) +#define PCU_DM_ISOEN(zpd) ((zpd)->reg_offset[REG_ISOEN]) +#define PCU_DM_RSTEN(zpd) ((zpd)->reg_offset[REG_RSTEN]) +#define PCU_DM_PWREN(zpd) ((zpd)->reg_offset[REG_PWREN]) +#define PCU_DM_ACK_SYNC(zpd) ((zpd)->reg_offset[REG_ACK_SYNC]) + +static void __iomem *pcubase; + +int zx_normal_power_on(struct generic_pm_domain *domain) +{ + struct zx_pm_domain *zpd = (struct zx_pm_domain *)domain; + unsigned long loop = 20000; + u32 val; + + loop = 1000; + do { + val = readl_relaxed(pcubase + PCU_DM_PWREN(zpd)); + val |= BIT(zpd->bit); + writel_relaxed(val, pcubase + PCU_DM_PWREN(zpd)); + + udelay(1); + val = readl_relaxed(pcubase + + PCU_DM_ACK_SYNC(zpd)) & BIT(zpd->bit); + } while (--loop && !val); + + if (!loop) { + pr_err("Error: %s %s fail\n", __func__, domain->name); + return -EIO; + } + + val = readl_relaxed(pcubase + PCU_DM_RSTEN(zpd)); + val &= ~BIT(zpd->bit); + writel_relaxed(val | BIT(zpd->bit), pcubase + PCU_DM_RSTEN(zpd)); + udelay(5); + + val = readl_relaxed(pcubase + PCU_DM_ISOEN(zpd)); + val &= ~BIT(zpd->bit); + writel_relaxed(val, pcubase + PCU_DM_ISOEN(zpd)); + udelay(5); + + val = readl_relaxed(pcubase + PCU_DM_CLKEN(zpd)); + val &= ~BIT(zpd->bit); + writel_relaxed(val | BIT(zpd->bit), pcubase + PCU_DM_CLKEN(zpd)); + udelay(5); + + pr_info("normal poweron %s\n", domain->name); + + return 0; +} + +int zx_normal_power_off(struct generic_pm_domain *domain) +{ + struct zx_pm_domain *zpd = (struct zx_pm_domain *)domain; + unsigned long loop = 1000; + u32 val; + + val = readl_relaxed(pcubase + PCU_DM_CLKEN(zpd)); + val &= ~BIT(zpd->bit); + writel_relaxed(val, pcubase + PCU_DM_CLKEN(zpd)); + udelay(5); + + val = readl_relaxed(pcubase + PCU_DM_ISOEN(zpd)); + val &= ~BIT(zpd->bit); + writel_relaxed(val | BIT(zpd->bit), pcubase + PCU_DM_ISOEN(zpd)); + udelay(5); + + val = readl_relaxed(pcubase + PCU_DM_RSTEN(zpd)); + val &= ~BIT(zpd->bit); + writel_relaxed(val, pcubase + PCU_DM_RSTEN(zpd)); + udelay(5); + + loop = 1000; + do { + val = readl_relaxed(pcubase + PCU_DM_PWREN(zpd)); + val &= ~BIT(zpd->bit); + writel_relaxed(val, pcubase + PCU_DM_PWREN(zpd)); + + udelay(1); + + val = readl_relaxed(pcubase + + PCU_DM_ACK_SYNC(zpd)) & BIT(zpd->bit); + } while (--loop && val); + + if (!loop) { + pr_err("Error: %s %s fail\n", __func__, domain->name); + return -EIO; + } + + pr_info("normal poweroff %s\n", domain->name); + + return 0; +} + +int +zx_pd_probe(struct platform_device *pdev, + struct generic_pm_domain **zx_pm_domains, + int domain_num) +{ + struct genpd_onecell_data *genpd_data; + struct resource *res; + int i; + + genpd_data = devm_kzalloc(&pdev->dev, sizeof(*genpd_data), GFP_KERNEL); + if (!genpd_data) + return -ENOMEM; + + genpd_data->domains = zx_pm_domains; + genpd_data->num_domains = domain_num; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(&pdev->dev, "no memory resource defined\n"); + return -ENODEV; + } + + pcubase = devm_ioremap_resource(&pdev->dev, res); + if (!pcubase) { + dev_err(&pdev->dev, "ioremap fail.\n"); + return -EIO; + } + + for (i = 0; i < domain_num; ++i) + pm_genpd_init(zx_pm_domains[i], NULL, false); + + of_genpd_add_provider_onecell(pdev->dev.of_node, genpd_data); + dev_info(&pdev->dev, "powerdomain init ok\n"); + return 0; +} diff --git a/drivers/soc/zte/pm_domains.h b/drivers/soc/zte/pm_domains.h new file mode 100644 index 0000000..e02518e --- /dev/null +++ b/drivers/soc/zte/pm_domains.h @@ -0,0 +1,41 @@ +/* + * Copyright (c) 2015 ZTE Co., Ltd. + * http://www.zte.com.cn + * + * Header for ZTE's Power Domain Driver support + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __ZTE_PM_DOMAIN_H +#define __ZTE_PM_DOMAIN_H + +#include +#include + +enum { + REG_CLKEN, + REG_ISOEN, + REG_RSTEN, + REG_PWREN, + REG_ACK_SYNC, + + /* The size of the array - must be last */ + REG_ARRAY_SIZE, +}; + +struct zx_pm_domain { + struct generic_pm_domain dm; + const u16 bit; + const u16 *reg_offset; +}; + +extern int zx_normal_power_on(struct generic_pm_domain *domain); +extern int zx_normal_power_off(struct generic_pm_domain *domain); +extern int +zx_pd_probe(struct platform_device *pdev, + struct generic_pm_domain **zx_pm_domains, + int domain_num); +#endif /* __ZTE_PM_DOMAIN_H */