diff options
Diffstat (limited to 'drivers/gpu/drm/lima/lima_devfreq.h')
| -rw-r--r-- | drivers/gpu/drm/lima/lima_devfreq.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/drivers/gpu/drm/lima/lima_devfreq.h b/drivers/gpu/drm/lima/lima_devfreq.h new file mode 100644 index 000000000..b8e50feae --- /dev/null +++ b/drivers/gpu/drm/lima/lima_devfreq.h @@ -0,0 +1,42 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright 2020 Martin Blumenstingl <martin.blumenstingl@googlemail.com> */ + +#ifndef __LIMA_DEVFREQ_H__ +#define __LIMA_DEVFREQ_H__ + +#include <linux/devfreq.h> +#include <linux/spinlock.h> +#include <linux/ktime.h> + +struct devfreq; +struct thermal_cooling_device; + +struct lima_device; + +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 |