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[90.5.59.229]) by mx.google.com with ESMTPS id fv2sm3486696wib.6.2013.03.15.07.27.31 (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 15 Mar 2013 07:27:32 -0700 (PDT) From: Daniel Lezcano To: linaro-kernel@lists.linaro.org, linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org Subject: [RFC patch 08/11] cpuidle / imx : use common ARM cpuidle driver Date: Fri, 15 Mar 2013 15:27:07 +0100 Message-Id: <1363357630-22214-9-git-send-email-daniel.lezcano@linaro.org> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1363357630-22214-1-git-send-email-daniel.lezcano@linaro.org> References: <1363357630-22214-1-git-send-email-daniel.lezcano@linaro.org> X-Gm-Message-State: ALoCoQkqcj0OqE6MADYzo5VgaCNSn+/NqdnqT59VG5xZOUDi1bD4cwJ12JA5ES3uAp06srl33l87 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130315_102736_525241_6CBDAF3C X-CRM114-Status: GOOD ( 18.65 ) 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: andrew@lunn.ch, magnus.damm@gmail.com, ben-linux@fluff.org, nsekhar@ti.com, nicolas.ferre@atmel.com, rob.herring@calxeda.com, rjw@sisk.pl, kevin.hilman@linaro.org, horms@verge.net.au, kernel@pengutronix.de, kgene.kim@samsung.com, plagnioj@jcrosoft.com, linux@maxim.org.za, jason@lakedaemon.net, lenb@kernel.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+incoming-imx=patchwork.ozlabs.org@lists.infradead.org List-Id: linux-imx-kernel.lists.patchwork.ozlabs.org Signed-off-by: Daniel Lezcano --- arch/arm/mach-imx/Makefile | 1 - arch/arm/mach-imx/cpuidle-imx6q.c | 18 +-------- arch/arm/mach-imx/cpuidle.c | 80 ------------------------------------- arch/arm/mach-imx/cpuidle.h | 6 +-- arch/arm/mach-imx/pm-imx5.c | 3 +- 5 files changed, 4 insertions(+), 104 deletions(-) delete mode 100644 arch/arm/mach-imx/cpuidle.c diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile index c4ce090..9933955 100644 --- a/arch/arm/mach-imx/Makefile +++ b/arch/arm/mach-imx/Makefile @@ -30,7 +30,6 @@ obj-$(CONFIG_MXC_DEBUG_BOARD) += 3ds_debugboard.o obj-$(CONFIG_CPU_FREQ_IMX) += cpufreq.o ifeq ($(CONFIG_CPU_IDLE),y) -obj-y += cpuidle.o obj-$(CONFIG_SOC_IMX6Q) += cpuidle-imx6q.o endif diff --git a/arch/arm/mach-imx/cpuidle-imx6q.c b/arch/arm/mach-imx/cpuidle-imx6q.c index d533e26..f2d71f8 100644 --- a/arch/arm/mach-imx/cpuidle-imx6q.c +++ b/arch/arm/mach-imx/cpuidle-imx6q.c @@ -48,17 +48,6 @@ done: return index; } -/* - * For each cpu, setup the broadcast timer because local timer - * stops for the states other than WFI. - */ -static void imx6q_setup_broadcast_timer(void *arg) -{ - int cpu = smp_processor_id(); - - clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_ON, &cpu); -} - static struct cpuidle_driver imx6q_cpuidle_driver = { .name = "imx6q_cpuidle", .owner = THIS_MODULE, @@ -70,7 +59,7 @@ static struct cpuidle_driver imx6q_cpuidle_driver = { { .exit_latency = 50, .target_residency = 75, - .flags = CPUIDLE_FLAG_TIME_VALID, + .flags = CPUIDLE_FLAG_TIME_VALID | CPUIDLE_FLAG_TIMER_STOP, .enter = imx6q_enter_wait, .name = "WAIT", .desc = "Clock off", @@ -88,8 +77,5 @@ int __init imx6q_cpuidle_init(void) /* Set chicken bit to get a reliable WAIT mode support */ imx6q_set_chicken_bit(); - /* Configure the broadcast timer on each cpu */ - on_each_cpu(imx6q_setup_broadcast_timer, NULL, 1); - - return imx_cpuidle_init(&imx6q_cpuidle_driver); + return arm_idle_init(&imx6q_cpuidle_driver); } diff --git a/arch/arm/mach-imx/cpuidle.c b/arch/arm/mach-imx/cpuidle.c deleted file mode 100644 index d4cb511..0000000 --- a/arch/arm/mach-imx/cpuidle.c +++ /dev/null @@ -1,80 +0,0 @@ -/* - * Copyright 2012 Freescale Semiconductor, Inc. - * Copyright 2012 Linaro Ltd. - * - * The code contained herein is licensed under the GNU General Public - * License. You may obtain a copy of the GNU General Public License - * Version 2 or later at the following locations: - * - * http://www.opensource.org/licenses/gpl-license.html - * http://www.gnu.org/copyleft/gpl.html - */ - -#include -#include -#include -#include -#include -#include - -static struct cpuidle_device __percpu * imx_cpuidle_devices; - -static void __init imx_cpuidle_devices_uninit(void) -{ - int cpu_id; - struct cpuidle_device *dev; - - for_each_possible_cpu(cpu_id) { - dev = per_cpu_ptr(imx_cpuidle_devices, cpu_id); - cpuidle_unregister_device(dev); - } - - free_percpu(imx_cpuidle_devices); -} - -int __init imx_cpuidle_init(struct cpuidle_driver *drv) -{ - struct cpuidle_device *dev; - int cpu_id, ret; - - if (drv->state_count > CPUIDLE_STATE_MAX) { - pr_err("%s: state_count exceeds maximum\n", __func__); - return -EINVAL; - } - - ret = cpuidle_register_driver(drv); - if (ret) { - pr_err("%s: Failed to register cpuidle driver with error: %d\n", - __func__, ret); - return ret; - } - - imx_cpuidle_devices = alloc_percpu(struct cpuidle_device); - if (imx_cpuidle_devices == NULL) { - ret = -ENOMEM; - goto unregister_drv; - } - - /* initialize state data for each cpuidle_device */ - for_each_possible_cpu(cpu_id) { - dev = per_cpu_ptr(imx_cpuidle_devices, cpu_id); - dev->cpu = cpu_id; - dev->state_count = drv->state_count; - - ret = cpuidle_register_device(dev); - if (ret) { - pr_err("%s: Failed to register cpu %u, error: %d\n", - __func__, cpu_id, ret); - goto uninit; - } - } - - return 0; - -uninit: - imx_cpuidle_devices_uninit(); - -unregister_drv: - cpuidle_unregister_driver(drv); - return ret; -} diff --git a/arch/arm/mach-imx/cpuidle.h b/arch/arm/mach-imx/cpuidle.h index e092d13..a15248c 100644 --- a/arch/arm/mach-imx/cpuidle.h +++ b/arch/arm/mach-imx/cpuidle.h @@ -11,15 +11,11 @@ */ #include +#include #ifdef CONFIG_CPU_IDLE -extern int imx_cpuidle_init(struct cpuidle_driver *drv); extern int imx6q_cpuidle_init(void); #else -static inline int imx_cpuidle_init(struct cpuidle_driver *drv) -{ - return -ENODEV; -} static inline int imx6q_cpuidle_init(void) { return -ENODEV; diff --git a/arch/arm/mach-imx/pm-imx5.c b/arch/arm/mach-imx/pm-imx5.c index f67fd7e..b2d231c 100644 --- a/arch/arm/mach-imx/pm-imx5.c +++ b/arch/arm/mach-imx/pm-imx5.c @@ -193,8 +193,7 @@ static int __init imx5_pm_common_init(void) /* Set the registers to the default cpu idle state. */ mx5_cpu_lp_set(IMX5_DEFAULT_CPU_IDLE_STATE); - imx_cpuidle_init(&imx5_cpuidle_driver); - return 0; + return arm_idle_init(&imx5_cpuidle_driver); } void __init imx51_pm_init(void)