d9be3f21f4
In case of double buffering (two capture buffers), the CSI is
frequently starved because of a lack of buffer in the active pool.
You can find below an example of double buffering scenario:
FREE_BUF ACTIVE_BUF
start: 0 2
frame0_complete: 0 1 (no buffer to load in active)
resubmit_frame0: 1 1
frame1_complete: 1 0 (CSI stopped, active buf = 0)
resubmit_frame1: 2 0
0 -> 2 (CSI restarted)
This patch solves this issue by loading buffer to active at submit
time.
FREE_BUF ACTIVE_BUF
start: 0 2
frame0_complete: 0 1
resubmit_frame0: 1 1
0 -> 2 (Direct load to active)
frame1_complete: 0 1
resubmit_frame1: 1 1
0 -> 2
...
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
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| .. | ||
| debug | ||
| fs | ||
| hal | ||
| lib | ||
| CMakeLists.txt | ||
| Kconfig | ||