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lib/crc: Add a helper to read a single CRC value

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In this case, we also take care of starting/stopping the CRC collection.

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
This commit is contained in:
Damien Lespiau 2014-02-06 16:17:38 +00:00
parent 7d0e2f618c
commit 6954103192
2 changed files with 15 additions and 0 deletions
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14
lib/igt_debugfs.c
View File

@ -341,6 +341,20 @@ igt_pipe_crc_get_crcs(igt_pipe_crc_t *pipe_crc, int n_crcs,
*out_crcs = crcs; *out_crcs = crcs;
} }
/*
* Read 1 CRC from @pipe_crc. This function blocks until the CRC is retrieved.
* @out_crc must be allocated by the caller.
*
* This function takes care of the pipe_crc book-keeping, it will start/stop
* the collection of the CRC.
*/
void igt_pipe_crc_collect_crc(igt_pipe_crc_t *pipe_crc, igt_crc_t *out_crc)
{
igt_pipe_crc_start(pipe_crc);
read_one_crc(pipe_crc, out_crc);
igt_pipe_crc_stop(pipe_crc);
}
/* /*
* Drop caches * Drop caches
*/ */

1
lib/igt_debugfs.h
View File

@ -79,6 +79,7 @@ void igt_pipe_crc_start(igt_pipe_crc_t *pipe_crc);
void igt_pipe_crc_stop(igt_pipe_crc_t *pipe_crc); void igt_pipe_crc_stop(igt_pipe_crc_t *pipe_crc);
void igt_pipe_crc_get_crcs(igt_pipe_crc_t *pipe_crc, int n_crcs, void igt_pipe_crc_get_crcs(igt_pipe_crc_t *pipe_crc, int n_crcs,
igt_crc_t **out_crcs); igt_crc_t **out_crcs);
void igt_pipe_crc_collect_crc(igt_pipe_crc_t *pipe_crc, igt_crc_t *out_crc);
/* /*
* Drop caches * Drop caches