From: Daniel Lezcano <daniel.lezcano@linaro.org> To: kgene.kim@samsung.com Cc: linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, t.figa@samsung.com, linaro-kernel@lists.linaro.org, rjw@rjwysocki.net Subject: [PATCH 07/17] ARM: exynos: cpuidle: Use the cpu_pm notifier Date: Fri, 4 Apr 2014 09:47:53 +0200 [thread overview] Message-ID: <1396597683-6969-8-git-send-email-daniel.lezcano@linaro.org> (raw) In-Reply-To: <1396597683-6969-1-git-send-email-daniel.lezcano@linaro.org> Use the cpu_pm_enter/exit notifier to group some pm code inside the pm file. The save and restore code is duplicated across pm.c and cpuidle.c. By using the cpu_pm notifier, we can factor out the routine. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> --- arch/arm/mach-exynos/cpuidle.c | 24 ------------------------ arch/arm/mach-exynos/pm.c | 23 +++++++++++++++++++++++ 2 files changed, 23 insertions(+), 24 deletions(-) diff --git a/arch/arm/mach-exynos/cpuidle.c b/arch/arm/mach-exynos/cpuidle.c index a1e1882..4b090cf 100644 --- a/arch/arm/mach-exynos/cpuidle.c +++ b/arch/arm/mach-exynos/cpuidle.c @@ -66,26 +66,6 @@ static void exynos_set_wakeupmask(void) __raw_writel(0x0000ff3e, S5P_WAKEUP_MASK); } -static unsigned int g_pwr_ctrl, g_diag_reg; - -static void save_cpu_arch_register(void) -{ - /*read power control register*/ - asm("mrc p15, 0, %0, c15, c0, 0" : "=r"(g_pwr_ctrl) : : "cc"); - /*read diagnostic register*/ - asm("mrc p15, 0, %0, c15, c0, 1" : "=r"(g_diag_reg) : : "cc"); - return; -} - -static void restore_cpu_arch_register(void) -{ - /*write power control register*/ - asm("mcr p15, 0, %0, c15, c0, 0" : : "r"(g_pwr_ctrl) : "cc"); - /*write diagnostic register*/ - asm("mcr p15, 0, %0, c15, c0, 1" : : "r"(g_diag_reg) : "cc"); - return; -} - static int idle_finisher(unsigned long flags) { exynos_set_wakeupmask(); @@ -107,8 +87,6 @@ static int exynos_enter_core0_aftr(struct cpuidle_device *dev, { unsigned long tmp; - save_cpu_arch_register(); - /* Setting Central Sequence Register for power down mode */ tmp = __raw_readl(S5P_CENTRAL_SEQ_CONFIGURATION); tmp &= ~S5P_CENTRAL_LOWPWR_CFG; @@ -123,8 +101,6 @@ static int exynos_enter_core0_aftr(struct cpuidle_device *dev, #endif cpu_pm_exit(); - restore_cpu_arch_register(); - /* * If PMU failed while entering sleep mode, WFI will be * ignored by PMU and then exiting cpu_do_idle(). diff --git a/arch/arm/mach-exynos/pm.c b/arch/arm/mach-exynos/pm.c index 2326c67..b2a075e 100644 --- a/arch/arm/mach-exynos/pm.c +++ b/arch/arm/mach-exynos/pm.c @@ -16,6 +16,7 @@ #include <linux/init.h> #include <linux/suspend.h> #include <linux/syscore_ops.h> +#include <linux/cpu_pm.h> #include <linux/io.h> #include <linux/err.h> #include <linux/clk.h> @@ -376,16 +377,38 @@ early_wakeup: return; } +static int exynos_cpu_pm_notifier(struct notifier_block *self, + unsigned long cmd, void *v) +{ + switch (cmd) { + case CPU_PM_ENTER: + exynos_cpu_save_register(); + break; + + case CPU_PM_EXIT: + exynos_cpu_restore_register(); + break; + } + + return NOTIFY_OK; +} + static struct syscore_ops exynos_pm_syscore_ops = { .suspend = exynos_pm_suspend, .resume = exynos_pm_resume, }; +static struct notifier_block exynos_cpu_pm_notifier_block = { + .notifier_call = exynos_cpu_pm_notifier, +}; static __init int exynos_pm_syscore_init(void) { if (soc_is_exynos5440()) return 0; + if (!soc_is_exynos5250()) + cpu_pm_register_notifier(&exynos_cpu_pm_notifier_block); + register_syscore_ops(&exynos_pm_syscore_ops); return 0; } -- 1.7.9.5
WARNING: multiple messages have this Message-ID (diff)
From: daniel.lezcano@linaro.org (Daniel Lezcano) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH 07/17] ARM: exynos: cpuidle: Use the cpu_pm notifier Date: Fri, 4 Apr 2014 09:47:53 +0200 [thread overview] Message-ID: <1396597683-6969-8-git-send-email-daniel.lezcano@linaro.org> (raw) In-Reply-To: <1396597683-6969-1-git-send-email-daniel.lezcano@linaro.org> Use the cpu_pm_enter/exit notifier to group some pm code inside the pm file. The save and restore code is duplicated across pm.c and cpuidle.c. By using the cpu_pm notifier, we can factor out the routine. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> --- arch/arm/mach-exynos/cpuidle.c | 24 ------------------------ arch/arm/mach-exynos/pm.c | 23 +++++++++++++++++++++++ 2 files changed, 23 insertions(+), 24 deletions(-) diff --git a/arch/arm/mach-exynos/cpuidle.c b/arch/arm/mach-exynos/cpuidle.c index a1e1882..4b090cf 100644 --- a/arch/arm/mach-exynos/cpuidle.c +++ b/arch/arm/mach-exynos/cpuidle.c @@ -66,26 +66,6 @@ static void exynos_set_wakeupmask(void) __raw_writel(0x0000ff3e, S5P_WAKEUP_MASK); } -static unsigned int g_pwr_ctrl, g_diag_reg; - -static void save_cpu_arch_register(void) -{ - /*read power control register*/ - asm("mrc p15, 0, %0, c15, c0, 0" : "=r"(g_pwr_ctrl) : : "cc"); - /*read diagnostic register*/ - asm("mrc p15, 0, %0, c15, c0, 1" : "=r"(g_diag_reg) : : "cc"); - return; -} - -static void restore_cpu_arch_register(void) -{ - /*write power control register*/ - asm("mcr p15, 0, %0, c15, c0, 0" : : "r"(g_pwr_ctrl) : "cc"); - /*write diagnostic register*/ - asm("mcr p15, 0, %0, c15, c0, 1" : : "r"(g_diag_reg) : "cc"); - return; -} - static int idle_finisher(unsigned long flags) { exynos_set_wakeupmask(); @@ -107,8 +87,6 @@ static int exynos_enter_core0_aftr(struct cpuidle_device *dev, { unsigned long tmp; - save_cpu_arch_register(); - /* Setting Central Sequence Register for power down mode */ tmp = __raw_readl(S5P_CENTRAL_SEQ_CONFIGURATION); tmp &= ~S5P_CENTRAL_LOWPWR_CFG; @@ -123,8 +101,6 @@ static int exynos_enter_core0_aftr(struct cpuidle_device *dev, #endif cpu_pm_exit(); - restore_cpu_arch_register(); - /* * If PMU failed while entering sleep mode, WFI will be * ignored by PMU and then exiting cpu_do_idle(). diff --git a/arch/arm/mach-exynos/pm.c b/arch/arm/mach-exynos/pm.c index 2326c67..b2a075e 100644 --- a/arch/arm/mach-exynos/pm.c +++ b/arch/arm/mach-exynos/pm.c @@ -16,6 +16,7 @@ #include <linux/init.h> #include <linux/suspend.h> #include <linux/syscore_ops.h> +#include <linux/cpu_pm.h> #include <linux/io.h> #include <linux/err.h> #include <linux/clk.h> @@ -376,16 +377,38 @@ early_wakeup: return; } +static int exynos_cpu_pm_notifier(struct notifier_block *self, + unsigned long cmd, void *v) +{ + switch (cmd) { + case CPU_PM_ENTER: + exynos_cpu_save_register(); + break; + + case CPU_PM_EXIT: + exynos_cpu_restore_register(); + break; + } + + return NOTIFY_OK; +} + static struct syscore_ops exynos_pm_syscore_ops = { .suspend = exynos_pm_suspend, .resume = exynos_pm_resume, }; +static struct notifier_block exynos_cpu_pm_notifier_block = { + .notifier_call = exynos_cpu_pm_notifier, +}; static __init int exynos_pm_syscore_init(void) { if (soc_is_exynos5440()) return 0; + if (!soc_is_exynos5250()) + cpu_pm_register_notifier(&exynos_cpu_pm_notifier_block); + register_syscore_ops(&exynos_pm_syscore_ops); return 0; } -- 1.7.9.5
next prev parent reply other threads:[~2014-04-04 7:47 UTC|newest] Thread overview: 78+ messages / expand[flat|nested] mbox.gz Atom feed top 2014-04-04 7:47 [PATCH 00/17] ARM: exynos: cpuidle: Move the driver to drivers/cpuidle Daniel Lezcano 2014-04-04 7:47 ` Daniel Lezcano 2014-04-04 7:47 ` [PATCH 01/17] ARM: exynos: cpuidle: Prevent forward declaration Daniel Lezcano 2014-04-04 7:47 ` Daniel Lezcano 2014-04-04 8:42 ` Viresh Kumar 2014-04-04 8:42 ` Viresh Kumar 2014-04-04 7:47 ` [PATCH 02/17] ARM: exynos: cpuidle: use cpuidle_register Daniel Lezcano 2014-04-04 7:47 ` Daniel Lezcano 2014-04-04 8:44 ` Viresh Kumar 2014-04-04 8:44 ` Viresh Kumar 2014-04-04 7:47 ` [PATCH 03/17] ARM: exynos: cpuidle: change function name prefix Daniel Lezcano 2014-04-04 7:47 ` Daniel Lezcano 2014-04-04 8:45 ` Viresh Kumar 2014-04-04 8:45 ` Viresh Kumar 2014-04-04 7:47 ` [PATCH 04/17] ARM: exynos: cpuidle: encapsulate register access inside a function Daniel Lezcano 2014-04-04 7:47 ` Daniel Lezcano 2014-04-04 8:46 ` Viresh Kumar 2014-04-04 8:46 ` Viresh Kumar 2014-04-04 7:47 ` [PATCH 05/17] ARM: exynos: cpuidle: Move some code inside the idle_finisher Daniel Lezcano 2014-04-04 7:47 ` Daniel Lezcano 2014-04-04 8:50 ` Viresh Kumar 2014-04-04 8:50 ` Viresh Kumar 2014-04-04 9:02 ` Daniel Lezcano 2014-04-04 9:02 ` Daniel Lezcano 2014-04-04 7:47 ` [PATCH 06/17] ARM: exynos: cpuidle: Fix S5P_WAKEUP_STAT call Daniel Lezcano 2014-04-04 7:47 ` Daniel Lezcano 2014-04-04 8:53 ` Viresh Kumar 2014-04-04 8:53 ` Viresh Kumar 2014-04-04 7:47 ` Daniel Lezcano [this message] 2014-04-04 7:47 ` [PATCH 07/17] ARM: exynos: cpuidle: Use the cpu_pm notifier Daniel Lezcano 2014-04-04 7:47 ` [PATCH 08/17] ARM: exynos: cpuidle: Move scu_enable in " Daniel Lezcano 2014-04-04 7:47 ` Daniel Lezcano 2014-04-04 8:57 ` Viresh Kumar 2014-04-04 8:57 ` Viresh Kumar 2014-04-04 9:03 ` Daniel Lezcano 2014-04-04 9:03 ` Daniel Lezcano 2014-04-04 7:47 ` [PATCH 09/17] ARM: exynos: cpuidle: Remove ifdef for scu_enable Daniel Lezcano 2014-04-04 7:47 ` Daniel Lezcano 2014-04-04 8:58 ` Viresh Kumar 2014-04-04 8:58 ` Viresh Kumar 2014-04-04 7:47 ` [PATCH 10/17] ARM: exynos: cpuidle: Move exynos_set_wakeupmask in the cpu_pm notifier Daniel Lezcano 2014-04-04 7:47 ` Daniel Lezcano 2014-04-04 8:59 ` Viresh Kumar 2014-04-04 8:59 ` Viresh Kumar 2014-04-04 7:47 ` [PATCH 11/17] ARM: exynos: cpuidle: Move the power sequence call " Daniel Lezcano 2014-04-04 7:47 ` Daniel Lezcano 2014-04-04 9:02 ` Viresh Kumar 2014-04-04 9:02 ` Viresh Kumar 2014-04-04 7:47 ` [PATCH 12/17] ARM: exynos: cpuidle: Move S5P_CHECK_AFTR in a header Daniel Lezcano 2014-04-04 7:47 ` Daniel Lezcano 2014-04-04 9:03 ` Viresh Kumar 2014-04-04 9:03 ` Viresh Kumar 2014-04-04 7:47 ` [PATCH 13/17] ARM: exynos: cpuidle: Move clock setup to pm.c Daniel Lezcano 2014-04-04 7:47 ` Daniel Lezcano 2014-04-04 9:05 ` Viresh Kumar 2014-04-04 9:05 ` Viresh Kumar 2014-04-04 7:48 ` [PATCH 14/17] ARM: exynos: cpuidle: Move the boot vector in pm.c Daniel Lezcano 2014-04-04 7:48 ` Daniel Lezcano 2014-04-04 9:05 ` Viresh Kumar 2014-04-04 9:05 ` Viresh Kumar 2014-04-04 7:48 ` [PATCH 15/17] ARM: exynos: cpuidle: Pass the AFTR callback to the platform_data Daniel Lezcano 2014-04-04 7:48 ` Daniel Lezcano 2014-04-04 9:09 ` Viresh Kumar 2014-04-04 9:09 ` Viresh Kumar 2014-04-04 7:48 ` [PATCH 16/17] ARM: exynos: cpuidle: Move the driver to drivers/cpuidle directory Daniel Lezcano 2014-04-04 7:48 ` Daniel Lezcano 2014-04-04 9:07 ` Viresh Kumar 2014-04-04 9:07 ` Viresh Kumar 2014-04-04 7:48 ` [PATCH 17/17] ARM: exynos: config: Enable cpuidle Daniel Lezcano 2014-04-04 7:48 ` Daniel Lezcano 2014-04-04 9:10 ` Viresh Kumar 2014-04-04 9:10 ` Viresh Kumar 2014-04-04 9:16 ` Daniel Lezcano 2014-04-04 9:16 ` Daniel Lezcano 2014-04-04 9:00 ` [PATCH 00/17] ARM: exynos: cpuidle: Move the driver to drivers/cpuidle Sachin Kamat 2014-04-04 9:00 ` Sachin Kamat 2014-04-04 9:55 ` Daniel Lezcano 2014-04-04 9:55 ` Daniel Lezcano
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