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Diffstat (limited to 'drivers/devfreq')
-rw-r--r--drivers/devfreq/devfreq.c25
-rw-r--r--drivers/devfreq/governor.h18
-rw-r--r--drivers/devfreq/governor_passive.c2
-rw-r--r--drivers/devfreq/tegra30-devfreq.c4
4 files changed, 29 insertions, 20 deletions
diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c
index 1b236b9e4d9e..a862acfe987e 100644
--- a/drivers/devfreq/devfreq.c
+++ b/drivers/devfreq/devfreq.c
@@ -31,6 +31,7 @@
#define CREATE_TRACE_POINTS
#include <trace/events/devfreq.h>
+#define IS_SUPPORTED_FLAG(f, name) ((f & DEVFREQ_GOV_FLAG_##name) ? true : false)
#define HZ_PER_KHZ 1000
static struct class *devfreq_class;
@@ -479,7 +480,7 @@ static void devfreq_monitor(struct work_struct *work)
*/
void devfreq_monitor_start(struct devfreq *devfreq)
{
- if (devfreq->governor->interrupt_driven)
+ if (IS_SUPPORTED_FLAG(devfreq->governor->flags, IRQ_DRIVEN))
return;
switch (devfreq->profile->timer) {
@@ -509,7 +510,7 @@ EXPORT_SYMBOL(devfreq_monitor_start);
*/
void devfreq_monitor_stop(struct devfreq *devfreq)
{
- if (devfreq->governor->interrupt_driven)
+ if (IS_SUPPORTED_FLAG(devfreq->governor->flags, IRQ_DRIVEN))
return;
cancel_delayed_work_sync(&devfreq->work);
@@ -540,7 +541,7 @@ void devfreq_monitor_suspend(struct devfreq *devfreq)
devfreq->stop_polling = true;
mutex_unlock(&devfreq->lock);
- if (devfreq->governor->interrupt_driven)
+ if (IS_SUPPORTED_FLAG(devfreq->governor->flags, IRQ_DRIVEN))
return;
cancel_delayed_work_sync(&devfreq->work);
@@ -560,12 +561,13 @@ void devfreq_monitor_resume(struct devfreq *devfreq)
unsigned long freq;
mutex_lock(&devfreq->lock);
- if (!devfreq->stop_polling)
- goto out;
- if (devfreq->governor->interrupt_driven)
+ if (IS_SUPPORTED_FLAG(devfreq->governor->flags, IRQ_DRIVEN))
goto out_update;
+ if (!devfreq->stop_polling)
+ goto out;
+
if (!delayed_work_pending(&devfreq->work) &&
devfreq->profile->polling_ms)
queue_delayed_work(devfreq_wq, &devfreq->work,
@@ -600,10 +602,10 @@ void devfreq_update_interval(struct devfreq *devfreq, unsigned int *delay)
mutex_lock(&devfreq->lock);
devfreq->profile->polling_ms = new_delay;
- if (devfreq->stop_polling)
+ if (IS_SUPPORTED_FLAG(devfreq->governor->flags, IRQ_DRIVEN))
goto out;
- if (devfreq->governor->interrupt_driven)
+ if (devfreq->stop_polling)
goto out;
/* if new delay is zero, stop polling */
@@ -1370,7 +1372,8 @@ static ssize_t governor_store(struct device *dev, struct device_attribute *attr,
if (df->governor == governor) {
ret = 0;
goto out;
- } else if (df->governor->immutable || governor->immutable) {
+ } else if (IS_SUPPORTED_FLAG(df->governor->flags, IMMUTABLE)
+ || IS_SUPPORTED_FLAG(governor->flags, IMMUTABLE)) {
ret = -EINVAL;
goto out;
}
@@ -1425,7 +1428,7 @@ static ssize_t available_governors_show(struct device *d,
* The devfreq with immutable governor (e.g., passive) shows
* only own governor.
*/
- if (df->governor->immutable) {
+ if (IS_SUPPORTED_FLAG(df->governor->flags, IMMUTABLE)) {
count = scnprintf(&buf[count], DEVFREQ_NAME_LEN,
"%s ", df->governor_name);
/*
@@ -1436,7 +1439,7 @@ static ssize_t available_governors_show(struct device *d,
struct devfreq_governor *governor;
list_for_each_entry(governor, &devfreq_governor_list, node) {
- if (governor->immutable)
+ if (IS_SUPPORTED_FLAG(governor->flags, IMMUTABLE))
continue;
count += scnprintf(&buf[count], (PAGE_SIZE - count - 2),
"%s ", governor->name);
diff --git a/drivers/devfreq/governor.h b/drivers/devfreq/governor.h
index 02cf876244d6..7dbb110a869e 100644
--- a/drivers/devfreq/governor.h
+++ b/drivers/devfreq/governor.h
@@ -25,14 +25,21 @@
#define DEVFREQ_MIN_FREQ 0
#define DEVFREQ_MAX_FREQ ULONG_MAX
+/*
+ * Definition of the governor feature flags
+ * - DEVFREQ_GOV_FLAG_IMMUTABLE
+ * : This governor is never changeable to other governors.
+ * - DEVFREQ_GOV_FLAG_IRQ_DRIVEN
+ * : The devfreq won't schedule the work for this governor.
+ */
+#define DEVFREQ_GOV_FLAG_IMMUTABLE BIT(0)
+#define DEVFREQ_GOV_FLAG_IRQ_DRIVEN BIT(1)
+
/**
* struct devfreq_governor - Devfreq policy governor
* @node: list node - contains registered devfreq governors
* @name: Governor's name
- * @immutable: Immutable flag for governor. If the value is 1,
- * this governor is never changeable to other governor.
- * @interrupt_driven: Devfreq core won't schedule polling work for this
- * governor if value is set to 1.
+ * @flags: Governor's feature flags
* @get_target_freq: Returns desired operating frequency for the device.
* Basically, get_target_freq will run
* devfreq_dev_profile.get_dev_status() to get the
@@ -50,8 +57,7 @@ struct devfreq_governor {
struct list_head node;
const char name[DEVFREQ_NAME_LEN];
- const unsigned int immutable;
- const unsigned int interrupt_driven;
+ const u64 flags;
int (*get_target_freq)(struct devfreq *this, unsigned long *freq);
int (*event_handler)(struct devfreq *devfreq,
unsigned int event, void *data);
diff --git a/drivers/devfreq/governor_passive.c b/drivers/devfreq/governor_passive.c
index 53a1b1596232..63332e4a65ae 100644
--- a/drivers/devfreq/governor_passive.c
+++ b/drivers/devfreq/governor_passive.c
@@ -158,7 +158,7 @@ static int devfreq_passive_event_handler(struct devfreq *devfreq,
static struct devfreq_governor devfreq_passive = {
.name = DEVFREQ_GOV_PASSIVE,
- .immutable = 1,
+ .flags = DEVFREQ_GOV_FLAG_IMMUTABLE,
.get_target_freq = devfreq_passive_get_target_freq,
.event_handler = devfreq_passive_event_handler,
};
diff --git a/drivers/devfreq/tegra30-devfreq.c b/drivers/devfreq/tegra30-devfreq.c
index f5e74c2ede85..faa1aecf2a31 100644
--- a/drivers/devfreq/tegra30-devfreq.c
+++ b/drivers/devfreq/tegra30-devfreq.c
@@ -765,10 +765,10 @@ static int tegra_governor_event_handler(struct devfreq *devfreq,
static struct devfreq_governor tegra_devfreq_governor = {
.name = "tegra_actmon",
+ .flags = DEVFREQ_GOV_FLAG_IMMUTABLE
+ | DEVFREQ_GOV_FLAG_IRQ_DRIVEN,
.get_target_freq = tegra_governor_get_target,
.event_handler = tegra_governor_event_handler,
- .immutable = true,
- .interrupt_driven = true,
};
static int tegra_devfreq_probe(struct platform_device *pdev)
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-22 12:46:22 +0300