Commit 2a79ea5e authored by Viresh Kumar's avatar Viresh Kumar Committed by Rafael J. Wysocki

PM / QOS: Pass request type to dev_pm_qos_read_value()

In order to allow dev_pm_qos_read_value() to read values for different
QoS requests, pass request type as a parameter to these routines.

For now, it only supports resume-latency request type but will be
extended to frequency limit (min/max) constraints later on.
Reviewed-by: default avatarMatthias Kaehlcke <mka@chromium.org>
Reviewed-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
Signed-off-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 8262331e
...@@ -123,7 +123,7 @@ Will remove the element. After removal it will update the aggregate target and ...@@ -123,7 +123,7 @@ Will remove the element. After removal it will update the aggregate target and
call the notification trees if the target was changed as a result of removing call the notification trees if the target was changed as a result of removing
the request. the request.
s32 dev_pm_qos_read_value(device): s32 dev_pm_qos_read_value(device, type):
Returns the aggregated value for a given device's constraints list. Returns the aggregated value for a given device's constraints list.
enum pm_qos_flags_status dev_pm_qos_flags(device, mask) enum pm_qos_flags_status dev_pm_qos_flags(device, mask)
......
...@@ -33,7 +33,7 @@ static int dev_update_qos_constraint(struct device *dev, void *data) ...@@ -33,7 +33,7 @@ static int dev_update_qos_constraint(struct device *dev, void *data)
* take its current PM QoS constraint (that's the only thing * take its current PM QoS constraint (that's the only thing
* known at this point anyway). * known at this point anyway).
*/ */
constraint_ns = dev_pm_qos_read_value(dev); constraint_ns = dev_pm_qos_read_value(dev, DEV_PM_QOS_RESUME_LATENCY);
constraint_ns *= NSEC_PER_USEC; constraint_ns *= NSEC_PER_USEC;
} }
......
...@@ -105,18 +105,25 @@ s32 __dev_pm_qos_resume_latency(struct device *dev) ...@@ -105,18 +105,25 @@ s32 __dev_pm_qos_resume_latency(struct device *dev)
/** /**
* dev_pm_qos_read_value - Get PM QoS constraint for a given device (locked). * dev_pm_qos_read_value - Get PM QoS constraint for a given device (locked).
* @dev: Device to get the PM QoS constraint value for. * @dev: Device to get the PM QoS constraint value for.
* @type: QoS request type.
*/ */
s32 dev_pm_qos_read_value(struct device *dev) s32 dev_pm_qos_read_value(struct device *dev, enum dev_pm_qos_req_type type)
{ {
struct dev_pm_qos *qos = dev->power.qos;
unsigned long flags; unsigned long flags;
s32 ret; s32 ret;
spin_lock_irqsave(&dev->power.lock, flags); spin_lock_irqsave(&dev->power.lock, flags);
if (IS_ERR_OR_NULL(dev->power.qos)) switch (type) {
ret = PM_QOS_RESUME_LATENCY_NO_CONSTRAINT; case DEV_PM_QOS_RESUME_LATENCY:
else ret = IS_ERR_OR_NULL(qos) ? PM_QOS_RESUME_LATENCY_NO_CONSTRAINT
ret = pm_qos_read_value(&dev->power.qos->resume_latency); : pm_qos_read_value(&qos->resume_latency);
break;
default:
WARN_ON(1);
ret = 0;
}
spin_unlock_irqrestore(&dev->power.lock, flags); spin_unlock_irqrestore(&dev->power.lock, flags);
......
...@@ -140,7 +140,7 @@ s32 pm_qos_read_value(struct pm_qos_constraints *c); ...@@ -140,7 +140,7 @@ s32 pm_qos_read_value(struct pm_qos_constraints *c);
enum pm_qos_flags_status __dev_pm_qos_flags(struct device *dev, s32 mask); enum pm_qos_flags_status __dev_pm_qos_flags(struct device *dev, s32 mask);
enum pm_qos_flags_status dev_pm_qos_flags(struct device *dev, s32 mask); enum pm_qos_flags_status dev_pm_qos_flags(struct device *dev, s32 mask);
s32 __dev_pm_qos_resume_latency(struct device *dev); s32 __dev_pm_qos_resume_latency(struct device *dev);
s32 dev_pm_qos_read_value(struct device *dev); s32 dev_pm_qos_read_value(struct device *dev, enum dev_pm_qos_req_type type);
int dev_pm_qos_add_request(struct device *dev, struct dev_pm_qos_request *req, int dev_pm_qos_add_request(struct device *dev, struct dev_pm_qos_request *req,
enum dev_pm_qos_req_type type, s32 value); enum dev_pm_qos_req_type type, s32 value);
int dev_pm_qos_update_request(struct dev_pm_qos_request *req, s32 new_value); int dev_pm_qos_update_request(struct dev_pm_qos_request *req, s32 new_value);
...@@ -191,8 +191,18 @@ static inline enum pm_qos_flags_status dev_pm_qos_flags(struct device *dev, ...@@ -191,8 +191,18 @@ static inline enum pm_qos_flags_status dev_pm_qos_flags(struct device *dev,
{ return PM_QOS_FLAGS_UNDEFINED; } { return PM_QOS_FLAGS_UNDEFINED; }
static inline s32 __dev_pm_qos_resume_latency(struct device *dev) static inline s32 __dev_pm_qos_resume_latency(struct device *dev)
{ return PM_QOS_RESUME_LATENCY_NO_CONSTRAINT; } { return PM_QOS_RESUME_LATENCY_NO_CONSTRAINT; }
static inline s32 dev_pm_qos_read_value(struct device *dev) static inline s32 dev_pm_qos_read_value(struct device *dev,
{ return PM_QOS_RESUME_LATENCY_NO_CONSTRAINT; } enum dev_pm_qos_req_type type)
{
switch (type) {
case DEV_PM_QOS_RESUME_LATENCY:
return PM_QOS_RESUME_LATENCY_NO_CONSTRAINT;
default:
WARN_ON(1);
return 0;
}
}
static inline int dev_pm_qos_add_request(struct device *dev, static inline int dev_pm_qos_add_request(struct device *dev,
struct dev_pm_qos_request *req, struct dev_pm_qos_request *req,
enum dev_pm_qos_req_type type, enum dev_pm_qos_req_type type,
......
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