[PATCH v2 5/8] PM / devfreq: Get the available next frequency on update_devfreq()

[Chanwoo Choi]

The update_devfreq() considers only user frequency (min_freq/max_freq)
and the next target_freq provided by the governor. But,  The commit
a76caf55e5b35 ("thermal: Add devfreq cooling") is able to disable
OPP as a cooling device. In result, the update_devfreq() have to
consider the 'opp->available' status in order to decicde the next freq
by the devfreq_recommended_opp().

Signed-off-by: Chanwoo Choi 
---
 drivers/devfreq/devfreq.c | 9 -
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c
index 1c4b377cacfb..3b9662ffe603 100644
--- a/drivers/devfreq/devfreq.c
+++ b/drivers/devfreq/devfreq.c
@@ -255,6 +255,7 @@ static int devfreq_notify_transition(struct devfreq 
*devfreq,
 int update_devfreq(struct devfreq *devfreq)
 {
struct devfreq_freqs freqs;
+   struct dev_pm_opp *opp;
unsigned long freq, cur_freq;
int err = 0;
u32 flags = 0;
@@ -273,7 +274,7 @@ int update_devfreq(struct devfreq *devfreq)
return err;
 
/*
-* Adjust the frequency with user freq and QoS.
+* Adjust the frequency with user freq, QoS and available freq.
 *
 * List from the highest priority
 * max_freq
@@ -289,6 +290,12 @@ int update_devfreq(struct devfreq *devfreq)
flags |= DEVFREQ_FLAG_LEAST_UPPER_BOUND; /* Use LUB */
}
 
+   opp = devfreq_recommended_opp(devfreq->dev.parent, , flags);
+   if (IS_ERR(opp))
+   return PTR_ERR(opp);
+   freq = dev_pm_opp_get_freq(opp);
+   dev_pm_opp_put(opp);
+
if (devfreq->profile->get_cur_freq)
devfreq->profile->get_cur_freq(devfreq->dev.parent, _freq);
else
-- 
1.9.1

[PATCH v2 5/8] PM / devfreq: Get the available next frequency on update_devfreq()

[Chanwoo Choi]

The update_devfreq() considers only user frequency (min_freq/max_freq)
and the next target_freq provided by the governor. But,  The commit
a76caf55e5b35 ("thermal: Add devfreq cooling") is able to disable
OPP as a cooling device. In result, the update_devfreq() have to
consider the 'opp->available' status in order to decicde the next freq
by the devfreq_recommended_opp().

Signed-off-by: Chanwoo Choi 
---
 drivers/devfreq/devfreq.c | 9 -
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c
index 1c4b377cacfb..3b9662ffe603 100644
--- a/drivers/devfreq/devfreq.c
+++ b/drivers/devfreq/devfreq.c
@@ -255,6 +255,7 @@ static int devfreq_notify_transition(struct devfreq 
*devfreq,
 int update_devfreq(struct devfreq *devfreq)
 {
struct devfreq_freqs freqs;
+   struct dev_pm_opp *opp;
unsigned long freq, cur_freq;
int err = 0;
u32 flags = 0;
@@ -273,7 +274,7 @@ int update_devfreq(struct devfreq *devfreq)
return err;
 
/*
-* Adjust the frequency with user freq and QoS.
+* Adjust the frequency with user freq, QoS and available freq.
 *
 * List from the highest priority
 * max_freq
@@ -289,6 +290,12 @@ int update_devfreq(struct devfreq *devfreq)
flags |= DEVFREQ_FLAG_LEAST_UPPER_BOUND; /* Use LUB */
}
 
+   opp = devfreq_recommended_opp(devfreq->dev.parent, , flags);
+   if (IS_ERR(opp))
+   return PTR_ERR(opp);
+   freq = dev_pm_opp_get_freq(opp);
+   dev_pm_opp_put(opp);
+
if (devfreq->profile->get_cur_freq)
devfreq->profile->get_cur_freq(devfreq->dev.parent, _freq);
else
-- 
1.9.1