diff options
Diffstat (limited to 'drivers/devfreq/devfreq_devbw.c')
| -rw-r--r-- | drivers/devfreq/devfreq_devbw.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/drivers/devfreq/devfreq_devbw.c b/drivers/devfreq/devfreq_devbw.c index b6b87fc29255..8a836d92e542 100644 --- a/drivers/devfreq/devfreq_devbw.c +++ b/drivers/devfreq/devfreq_devbw.c @@ -45,6 +45,7 @@ struct dev_data { int cur_ab; int cur_ib; long gov_ab; + unsigned int ab_percent; struct devfreq *df; struct devfreq_dev_profile dp; }; @@ -78,6 +79,11 @@ static int set_bw(struct device *dev, int new_ib, int new_ab) return ret; } +static unsigned int find_ab(struct dev_data *d, unsigned long *freq) +{ + return (d->ab_percent * (*freq)) / 100; +} + static void find_freq(struct devfreq_dev_profile *p, unsigned long *freq, u32 flags) { @@ -105,7 +111,11 @@ static int devbw_target(struct device *dev, unsigned long *freq, u32 flags) struct dev_data *d = dev_get_drvdata(dev); find_freq(&d->dp, freq, flags); - return set_bw(dev, *freq, d->gov_ab); + + if (!d->gov_ab) + return set_bw(dev, *freq, find_ab(d, freq)); + else + return set_bw(dev, *freq, d->gov_ab); } static int devbw_get_dev_status(struct device *dev, @@ -119,6 +129,7 @@ static int devbw_get_dev_status(struct device *dev, #define PROP_PORTS "qcom,src-dst-ports" #define PROP_TBL "qcom,bw-tbl" +#define PROP_AB_PER "qcom,ab-percent" #define PROP_ACTIVE "qcom,active-only" int devfreq_add_devbw(struct device *dev) @@ -196,6 +207,15 @@ int devfreq_add_devbw(struct device *dev) p->max_state = len; } + if (of_find_property(dev->of_node, PROP_AB_PER, &len)) { + ret = of_property_read_u32(dev->of_node, PROP_AB_PER, + &d->ab_percent); + if (ret) + return ret; + + dev_dbg(dev, "ab-percent used %u\n", d->ab_percent); + } + d->bus_client = msm_bus_scale_register_client(&d->bw_data); if (!d->bus_client) { dev_err(dev, "Unable to register bus client\n"); |