[V4,1/7] ARM: tegra: cpuidle: separate cpuidle driver for different chips

Message ID	1351676481-28425-2-git-send-email-josephl@nvidia.com (mailing list archive)
State	New, archived
Headers	show Return-Path: <linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org> From: Joseph Lo <josephl@nvidia.com> To: Stephen Warren <swarren@wwwdotorg.org> Subject: [PATCH V4 1/7] ARM: tegra: cpuidle: separate cpuidle driver for different chips Date: Wed, 31 Oct 2012 17:41:15 +0800 Message-ID: <1351676481-28425-2-git-send-email-josephl@nvidia.com> In-Reply-To: <1351676481-28425-1-git-send-email-josephl@nvidia.com> References: <1351676481-28425-1-git-send-email-josephl@nvidia.com> MIME-Version: 1.0 summary: Content analysis details: (-7.6 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at http://www.dnswl.org/, high trust [216.228.121.35 listed in list.dnswl.org] -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.0 SPF_PASS SPF: sender matches SPF record -0.7 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: linux-tegra@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Joseph Lo <josephl@nvidia.com> Precedence: list Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org

diff --git a/arch/arm/mach-tegra/Makefile b/arch/arm/mach-tegra/Makefile index e6929c6..9b80c1e 100644 --- a/arch/arm/mach-tegra/Makefile +++ b/arch/arm/mach-tegra/Makefile @@ -14,9 +14,15 @@ obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += tegra20_clocks.o obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += tegra20_clocks_data.o obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += tegra2_emc.o obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += sleep-tegra20.o +ifeq ($(CONFIG_CPU_IDLE),y) +obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += cpuidle-tegra20.o +endif obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += tegra30_clocks.o obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += tegra30_clocks_data.o obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += sleep-tegra30.o +ifeq ($(CONFIG_CPU_IDLE),y) +obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += cpuidle-tegra30.o +endif obj-$(CONFIG_SMP) += platsmp.o headsmp.o obj-$(CONFIG_SMP) += reset.o obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o diff --git a/arch/arm/mach-tegra/cpuidle.c b/arch/arm/mach-tegra/cpuidle-tegra20.c similarity index 91% copy from arch/arm/mach-tegra/cpuidle.c copy to arch/arm/mach-tegra/cpuidle-tegra20.c index 4e0b07c..d32e8b0 100644 --- a/arch/arm/mach-tegra/cpuidle.c +++ b/arch/arm/mach-tegra/cpuidle-tegra20.c @@ -1,6 +1,4 @@ /* - * arch/arm/mach-tegra/cpuidle.c - * * CPU idle driver for Tegra CPUs * * Copyright (c) 2010-2012, NVIDIA Corporation. @@ -27,7 +25,7 @@ #include <asm/cpuidle.h> -struct cpuidle_driver tegra_idle_driver = { +static struct cpuidle_driver tegra_idle_driver = { .name = "tegra_idle", .owner = THIS_MODULE, .en_core_tk_irqen = 1, @@ -39,7 +37,7 @@ struct cpuidle_driver tegra_idle_driver = { static DEFINE_PER_CPU(struct cpuidle_device, tegra_idle_device); -static int __init tegra_cpuidle_init(void) +int __init tegra20_cpuidle_init(void) { int ret; unsigned int cpu; @@ -66,4 +64,3 @@ static int __init tegra_cpuidle_init(void) } return 0; } -device_initcall(tegra_cpuidle_init); diff --git a/arch/arm/mach-tegra/cpuidle.c b/arch/arm/mach-tegra/cpuidle-tegra30.c similarity index 91% copy from arch/arm/mach-tegra/cpuidle.c copy to arch/arm/mach-tegra/cpuidle-tegra30.c index 4e0b07c..37e7551 100644 --- a/arch/arm/mach-tegra/cpuidle.c +++ b/arch/arm/mach-tegra/cpuidle-tegra30.c @@ -1,6 +1,4 @@ /* - * arch/arm/mach-tegra/cpuidle.c - * * CPU idle driver for Tegra CPUs * * Copyright (c) 2010-2012, NVIDIA Corporation. @@ -27,7 +25,7 @@ #include <asm/cpuidle.h> -struct cpuidle_driver tegra_idle_driver = { +static struct cpuidle_driver tegra_idle_driver = { .name = "tegra_idle", .owner = THIS_MODULE, .en_core_tk_irqen = 1, @@ -39,7 +37,7 @@ struct cpuidle_driver tegra_idle_driver = { static DEFINE_PER_CPU(struct cpuidle_device, tegra_idle_device); -static int __init tegra_cpuidle_init(void) +int __init tegra30_cpuidle_init(void) { int ret; unsigned int cpu; @@ -66,4 +64,3 @@ static int __init tegra_cpuidle_init(void) } return 0; } -device_initcall(tegra_cpuidle_init); diff --git a/arch/arm/mach-tegra/cpuidle.c b/arch/arm/mach-tegra/cpuidle.c index 4e0b07c..d065139 100644 --- a/arch/arm/mach-tegra/cpuidle.c +++ b/arch/arm/mach-tegra/cpuidle.c @@ -23,47 +23,26 @@ #include <linux/kernel.h> #include <linux/module.h> -#include <linux/cpuidle.h> -#include <asm/cpuidle.h> - -struct cpuidle_driver tegra_idle_driver = { - .name = "tegra_idle", - .owner = THIS_MODULE, - .en_core_tk_irqen = 1, - .state_count = 1, - .states = { - [0] = ARM_CPUIDLE_WFI_STATE_PWR(600), - }, -}; - -static DEFINE_PER_CPU(struct cpuidle_device, tegra_idle_device); +#include "fuse.h" +#include "cpuidle.h" static int __init tegra_cpuidle_init(void) { int ret; - unsigned int cpu; - struct cpuidle_device *dev; - struct cpuidle_driver *drv = &tegra_idle_driver; - ret = cpuidle_register_driver(&tegra_idle_driver); - if (ret) { - pr_err("CPUidle driver registration failed\n"); - return ret; + switch (tegra_chip_id) { + case TEGRA20: + ret = tegra20_cpuidle_init(); + break; + case TEGRA30: + ret = tegra30_cpuidle_init(); + break; + default: + ret = -ENODEV; + break; } - for_each_possible_cpu(cpu) { - dev = &per_cpu(tegra_idle_device, cpu); - dev->cpu = cpu; - - dev->state_count = drv->state_count; - ret = cpuidle_register_device(dev); - if (ret) { - pr_err("CPU%u: CPUidle device registration failed\n", - cpu); - return ret; - } - } - return 0; + return ret; } device_initcall(tegra_cpuidle_init); diff --git a/arch/arm/mach-tegra/cpuidle.h b/arch/arm/mach-tegra/cpuidle.h new file mode 100644 index 0000000..496204d --- /dev/null +++ b/arch/arm/mach-tegra/cpuidle.h @@ -0,0 +1,32 @@ +/* + * Copyright (c) 2012, NVIDIA Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef __MACH_TEGRA_CPUIDLE_H +#define __MACH_TEGRA_CPUIDLE_H + +#ifdef CONFIG_ARCH_TEGRA_2x_SOC +int tegra20_cpuidle_init(void); +#else +static inline int tegra20_cpuidle_init(void) { return -ENODEV; } +#endif + +#ifdef CONFIG_ARCH_TEGRA_3x_SOC +int tegra30_cpuidle_init(void); +#else +static inline int tegra30_cpuidle_init(void) { return -ENODEV; } +#endif + +#endif

[V4,1/7] ARM: tegra: cpuidle: separate cpuidle driver for different chips

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