From 30d221db4439973076953e2ed44344fa92d1d09f Mon Sep 17 00:00:00 2001 From: Alessandro Guido Date: Fri, 18 Apr 2008 13:31:13 -0700 Subject: [PATCH] [CPUFREQ] allow use of the powersave governor as the default one Allow use of the powersave cpufreq governor as the default one for EMBEDDED configs. Signed-off-by: Alessandro Guido Signed-off-by: Andrew Morton Signed-off-by: Dave Jones --- drivers/cpufreq/Kconfig | 9 +++++++++ drivers/cpufreq/cpufreq_powersave.c | 8 ++++++-- include/linux/cpufreq.h | 3 +++ 3 files changed, 18 insertions(+), 2 deletions(-) diff --git a/drivers/cpufreq/Kconfig b/drivers/cpufreq/Kconfig index c159ae64eeb2..5f076aef74fa 100644 --- a/drivers/cpufreq/Kconfig +++ b/drivers/cpufreq/Kconfig @@ -69,6 +69,15 @@ config CPU_FREQ_DEFAULT_GOV_PERFORMANCE the frequency statically to the highest frequency supported by the CPU. +config CPU_FREQ_DEFAULT_GOV_POWERSAVE + bool "powersave" + depends on EMBEDDED + select CPU_FREQ_GOV_POWERSAVE + help + Use the CPUFreq governor 'powersave' as default. This sets + the frequency statically to the lowest frequency supported by + the CPU. + config CPU_FREQ_DEFAULT_GOV_USERSPACE bool "userspace" select CPU_FREQ_GOV_USERSPACE diff --git a/drivers/cpufreq/cpufreq_powersave.c b/drivers/cpufreq/cpufreq_powersave.c index 13fe06b94b0a..88d2f44fba48 100644 --- a/drivers/cpufreq/cpufreq_powersave.c +++ b/drivers/cpufreq/cpufreq_powersave.c @@ -35,12 +35,12 @@ static int cpufreq_governor_powersave(struct cpufreq_policy *policy, return 0; } -static struct cpufreq_governor cpufreq_gov_powersave = { +struct cpufreq_governor cpufreq_gov_powersave = { .name = "powersave", .governor = cpufreq_governor_powersave, .owner = THIS_MODULE, }; - +EXPORT_SYMBOL(cpufreq_gov_powersave); static int __init cpufreq_gov_powersave_init(void) { @@ -58,5 +58,9 @@ MODULE_AUTHOR("Dominik Brodowski "); MODULE_DESCRIPTION("CPUfreq policy governor 'powersave'"); MODULE_LICENSE("GPL"); +#ifdef CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE +fs_initcall(cpufreq_gov_powersave_init); +#else module_init(cpufreq_gov_powersave_init); +#endif module_exit(cpufreq_gov_powersave_exit); diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index a881fd62c447..e7e91dbfde0f 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -308,6 +308,9 @@ extern struct cpufreq_governor cpufreq_gov_performance; #endif #ifdef CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE #define CPUFREQ_DEFAULT_GOVERNOR (&cpufreq_gov_performance) +#elif defined(CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE) +extern struct cpufreq_governor cpufreq_gov_powersave; +#define CPUFREQ_DEFAULT_GOVERNOR (&cpufreq_gov_powersave) #elif defined(CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE) extern struct cpufreq_governor cpufreq_gov_userspace; #define CPUFREQ_DEFAULT_GOVERNOR (&cpufreq_gov_userspace)