diff options
Diffstat (limited to 'drivers/devfreq/governor_performance.c')
| -rw-r--r-- | drivers/devfreq/governor_performance.c | 44 |
1 files changed, 41 insertions, 3 deletions
diff --git a/drivers/devfreq/governor_performance.c b/drivers/devfreq/governor_performance.c index c0596b29176..c72f942f30a 100644 --- a/drivers/devfreq/governor_performance.c +++ b/drivers/devfreq/governor_performance.c @@ -10,6 +10,8 @@ */ #include <linux/devfreq.h> +#include <linux/module.h> +#include "governor.h" static int devfreq_performance_func(struct devfreq *df, unsigned long *freq) @@ -18,12 +20,48 @@ static int devfreq_performance_func(struct devfreq *df, * target callback should be able to get floor value as * said in devfreq.h */ - *freq = UINT_MAX; + if (!df->max_freq) + *freq = UINT_MAX; + else + *freq = df->max_freq; return 0; } -const struct devfreq_governor devfreq_performance = { +static int devfreq_performance_handler(struct devfreq *devfreq, + unsigned int event, void *data) +{ + int ret = 0; + + if (event == DEVFREQ_GOV_START) { + mutex_lock(&devfreq->lock); + ret = update_devfreq(devfreq); + mutex_unlock(&devfreq->lock); + } + + return ret; +} + +static struct devfreq_governor devfreq_performance = { .name = "performance", .get_target_freq = devfreq_performance_func, - .no_central_polling = true, + .event_handler = devfreq_performance_handler, }; + +static int __init devfreq_performance_init(void) +{ + return devfreq_add_governor(&devfreq_performance); +} +subsys_initcall(devfreq_performance_init); + +static void __exit devfreq_performance_exit(void) +{ + int ret; + + ret = devfreq_remove_governor(&devfreq_performance); + if (ret) + pr_err("%s: failed remove governor %d\n", __func__, ret); + + return; +} +module_exit(devfreq_performance_exit); +MODULE_LICENSE("GPL"); |