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[87.207.52.162]) by mx.google.com with ESMTPSA id y51sm51430597eeu.0.2014.03.03.08.02.35 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 03 Mar 2014 08:02:36 -0800 (PST) From: Tomasz Figa To: linux-pm@vger.kernel.org Cc: linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, Greg Kroah-Hartman , "Rafael J. Wysocki" , Pavel Machek , Len Brown , Russell King , Kukjin Kim , Kumar Gala , Ian Campbell , Mark Rutland , Pawel Moll , Rob Herring , Bartlomiej Zolnierkiewicz , Stephen Warren , Tomasz Figa , Mark Brown , Stephen Boyd , Lorenzo Pieralisi , Ulf Hansson , Marek Szyprowski , Tomasz Figa Subject: [PATCH v2 03/11] ARM: exynos: Move to generic power domain bindings Date: Mon, 3 Mar 2014 17:02:08 +0100 Message-Id: <1393862536-9842-4-git-send-email-tomasz.figa@gmail.com> X-Mailer: git-send-email 1.9.0 In-Reply-To: <1393862536-9842-1-git-send-email-tomasz.figa@gmail.com> References: <1393862536-9842-1-git-send-email-tomasz.figa@gmail.com> Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Spam-Status: No, score=-3.8 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, KHOP_BIG_TO_CC, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, T_DKIM_INVALID, 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 This patch moves Exynos power domain code to use the new generic power domain look-up framework introduced by previous patch, allowing the new code to be compiled with CONFIG_ARCH_EXYNOS selected as well. Signed-off-by: Tomasz Figa --- .../bindings/arm/exynos/power_domain.txt | 12 ++-- arch/arm/mach-exynos/pm_domains.c | 80 +--------------------- kernel/power/Kconfig | 2 +- 3 files changed, 7 insertions(+), 87 deletions(-) diff --git a/Documentation/devicetree/bindings/arm/exynos/power_domain.txt b/Documentation/devicetree/bindings/arm/exynos/power_domain.txt index 5216b41..60f26a8 100644 --- a/Documentation/devicetree/bindings/arm/exynos/power_domain.txt +++ b/Documentation/devicetree/bindings/arm/exynos/power_domain.txt @@ -8,6 +8,8 @@ Required Properties: * samsung,exynos4210-pd - for exynos4210 type power domain. - reg: physical base address of the controller and length of memory mapped region. +- #power-domain-cells: number of cells in power domain specifier; + must be 0. Node of a device using power domains must have a samsung,power-domain property defined with a phandle to respective power domain. @@ -17,12 +19,8 @@ Example: lcd0: power-domain-lcd0 { compatible = "samsung,exynos4210-pd"; reg = <0x10023C00 0x10>; + #power-domain-cells = <0>; }; -Example of the node using power domain: - - node { - /* ... */ - samsung,power-domain = <&lcd0>; - /* ... */ - }; +See Documentation/devicetree/bindings/power/power_domain.txt for description +of consumer-side bindings. diff --git a/arch/arm/mach-exynos/pm_domains.c b/arch/arm/mach-exynos/pm_domains.c index 8fd2488..48ee6c9 100644 --- a/arch/arm/mach-exynos/pm_domains.c +++ b/arch/arm/mach-exynos/pm_domains.c @@ -75,78 +75,6 @@ static int exynos_pd_power_off(struct generic_pm_domain *domain) return exynos_pd_power(domain, false); } -static void exynos_add_device_to_domain(struct exynos_pm_domain *pd, - struct device *dev) -{ - int ret; - - dev_dbg(dev, "adding to power domain %s\n", pd->pd.name); - - while (1) { - ret = pm_genpd_add_device(&pd->pd, dev); - if (ret != -EAGAIN) - break; - cond_resched(); - } - - pm_genpd_dev_need_restore(dev, true); -} - -static void exynos_remove_device_from_domain(struct device *dev) -{ - struct generic_pm_domain *genpd = dev_to_genpd(dev); - int ret; - - dev_dbg(dev, "removing from power domain %s\n", genpd->name); - - while (1) { - ret = pm_genpd_remove_device(genpd, dev); - if (ret != -EAGAIN) - break; - cond_resched(); - } -} - -static void exynos_read_domain_from_dt(struct device *dev) -{ - struct platform_device *pd_pdev; - struct exynos_pm_domain *pd; - struct device_node *node; - - node = of_parse_phandle(dev->of_node, "samsung,power-domain", 0); - if (!node) - return; - pd_pdev = of_find_device_by_node(node); - if (!pd_pdev) - return; - pd = platform_get_drvdata(pd_pdev); - exynos_add_device_to_domain(pd, dev); -} - -static int exynos_pm_notifier_call(struct notifier_block *nb, - unsigned long event, void *data) -{ - struct device *dev = data; - - switch (event) { - case BUS_NOTIFY_BIND_DRIVER: - if (dev->of_node) - exynos_read_domain_from_dt(dev); - - break; - - case BUS_NOTIFY_UNBOUND_DRIVER: - exynos_remove_device_from_domain(dev); - - break; - } - return NOTIFY_DONE; -} - -static struct notifier_block platform_nb = { - .notifier_call = exynos_pm_notifier_call, -}; - static __init int exynos4_pm_init_power_domain(void) { struct platform_device *pdev; @@ -156,8 +84,6 @@ static __init int exynos4_pm_init_power_domain(void) struct exynos_pm_domain *pd; int on; - pdev = of_find_device_by_node(np); - pd = kzalloc(sizeof(*pd), GFP_KERNEL); if (!pd) { pr_err("%s: failed to allocate memory for domain\n", @@ -170,17 +96,13 @@ static __init int exynos4_pm_init_power_domain(void) pd->base = of_iomap(np, 0); pd->pd.power_off = exynos_pd_power_off; pd->pd.power_on = exynos_pd_power_on; - pd->pd.of_node = np; - - platform_set_drvdata(pdev, pd); on = __raw_readl(pd->base + 0x4) & S5P_INT_LOCAL_PWR_EN; pm_genpd_init(&pd->pd, NULL, !on); + of_genpd_add_provider(np, of_genpd_xlate_simple, &pd->pd); } - bus_register_notifier(&platform_bus_type, &platform_nb); - return 0; } arch_initcall(exynos4_pm_init_power_domain); diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig index 45aa98e..b17588c 100644 --- a/kernel/power/Kconfig +++ b/kernel/power/Kconfig @@ -308,7 +308,7 @@ config PM_GENERIC_DOMAINS_RUNTIME config PM_GENERIC_DOMAINS_OF def_bool y - depends on PM_GENERIC_DOMAINS && OF && !ARCH_EXYNOS + depends on PM_GENERIC_DOMAINS && OF config CPU_PM bool