diff options
Diffstat (limited to 'drivers/devfreq/devfreq.c')
| -rw-r--r-- | drivers/devfreq/devfreq.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c index 00bcdd9540b5..9a857f8c039e 100644 --- a/drivers/devfreq/devfreq.c +++ b/drivers/devfreq/devfreq.c @@ -69,6 +69,29 @@ static struct devfreq *find_device_devfreq(struct device *dev) } /** + * devfreq_set_freq_limits() - Set min and max frequency from freq_table + * @devfreq: the devfreq instance + */ +static void devfreq_set_freq_limits(struct devfreq *devfreq) +{ + int idx; + unsigned long min = ~0, max = 0; + + if (!devfreq->profile->freq_table) + return; + + for (idx = 0; idx < devfreq->profile->max_state; idx++) { + if (min > devfreq->profile->freq_table[idx]) + min = devfreq->profile->freq_table[idx]; + if (max < devfreq->profile->freq_table[idx]) + max = devfreq->profile->freq_table[idx]; + } + + devfreq->min_freq = min; + devfreq->max_freq = max; +} + +/** * devfreq_get_freq_level() - Lookup freq_table for the frequency * @devfreq: the devfreq instance * @freq: the target frequency @@ -487,6 +510,7 @@ struct devfreq *devfreq_add_device(struct device *dev, devfreq->profile->max_state, GFP_KERNEL); devfreq->last_stat_updated = jiffies; + devfreq_set_freq_limits(devfreq); dev_set_name(&devfreq->dev, "%s", dev_name(dev)); err = device_register(&devfreq->dev); |