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/*
* Copyright (C) ST-Ericsson SA 2010
*
* ST-Ericsson B2R2 profiling API
*
* Author: Johan Mossberg <johan.xx.mossberg@stericsson.com>
* for ST-Ericsson.
*
* License terms: GNU General Public License (GPL), version 2.
*/
#ifndef _LINUX_VIDEO_B2R2_PROFILER_API_H
#define _LINUX_VIDEO_B2R2_PROFILER_API_H
#include <video/b2r2_blt.h>
/**
* struct b2r2_blt_profiling_info - Profiling information for a blit
*
* @nsec_active_in_cpu: The number of nanoseconds the job was active in the CPU.
* This is an approximate value, check out the code for more
* info.
* @nsec_active_in_b2r2: The number of nanoseconds the job was active in B2R2. This
* is an approximate value, check out the code for more info.
* @total_time_nsec: The total time the job took in nano seconds. Includes ideling.
*/
struct b2r2_blt_profiling_info {
s32 nsec_active_in_cpu;
s32 nsec_active_in_b2r2;
s32 total_time_nsec;
};
/**
* struct b2r2_profiler - B2R2 profiler.
*
* The callbacks are never run concurrently. No heavy stuff must be done in the
* callbacks as this might adversely affect the B2R2 driver. The callbacks must
* not call the B2R2 profiler API as this will cause a deadlock. If the callbacks
* call into the B2R2 driver care must be taken as deadlock situations can arise.
*
* @blt_done: Called when a blit has finished, timed out or been canceled.
*/
struct b2r2_profiler {
void (*blt_done)(const struct b2r2_blt_req * const request, const s32 request_id, const struct b2r2_blt_profiling_info * const blt_profiling_info);
};
/**
* b2r2_register_profiler() - Registers a profiler.
*
* Currently only one profiler can be registered at any given time.
*
* @profiler: The profiler
*
* Returns 0 on success, negative error code on failure
*/
int b2r2_register_profiler(const struct b2r2_profiler * const profiler);
/**
* b2r2_unregister_profiler() - Unregisters a profiler.
*
* @profiler: The profiler
*/
void b2r2_unregister_profiler(const struct b2r2_profiler * const profiler);
#endif /* #ifdef _LINUX_VIDEO_B2R2_PROFILER_API_H */
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