drivers/gpu/drm/lima/lima_devfreq.h

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/lima/lima_devfreq.h

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/lima/lima_devfreq.h
Extension
.h
Size
1075 bytes
Lines
43
Domain
Driver Families
Bucket
drivers/gpu
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct lima_devfreq {
	struct devfreq *devfreq;
	struct thermal_cooling_device *cooling;
	struct devfreq_simple_ondemand_data gov_data;

	ktime_t busy_time;
	ktime_t idle_time;
	ktime_t time_last_update;
	int busy_count;
	/*
	 * Protect busy_time, idle_time, time_last_update and busy_count
	 * because these can be updated concurrently, for example by the GP
	 * and PP interrupts.
	 */
	spinlock_t lock;
};

int lima_devfreq_init(struct lima_device *ldev);
void lima_devfreq_fini(struct lima_device *ldev);

void lima_devfreq_record_busy(struct lima_devfreq *devfreq);
void lima_devfreq_record_idle(struct lima_devfreq *devfreq);

int lima_devfreq_resume(struct lima_devfreq *devfreq);
int lima_devfreq_suspend(struct lima_devfreq *devfreq);

#endif

Annotation

Implementation Notes