diff options
| author | Sebastian Andrzej Siewior <[email protected]> | 2013-06-20 12:13:04 +0200 |
|---|---|---|
| committer | Felipe Balbi <[email protected]> | 2013-08-09 17:40:16 +0300 |
| commit | 9b3452d1fa3c017d3664ff9e6a601daa6e0576eb (patch) | |
| tree | ac2fdd71c45975f2430d094ef138ccd0a2d835c0 /tools/perf/scripts/python/sctop.py | |
| parent | 97238b35d5bbb5d5312d83c30a429824b777619f (diff) | |
usb: musb dma: add cppi41 dma driver
This driver is currently used by musb' cppi41 couter part. I may merge
both dma engine user of musb at some point but not just yet.
The driver seems to work in RX/TX mode in host mode, tested on mass
storage. I increaed the size of the TX / RX transfers and waited for the
core code to cancel a transfers and it seems to recover.
v2..3:
- use mall transfers on RX side and check data toggle.
- use rndis mode on tx side so we haveon interrupt for 4096 transfers.
- remove custom "transferred" hack and use dmaengine_tx_status() to
compute the total amount of data that has been transferred.
- cancel transfers and reclaim descriptors
v1..v2:
- RX path added
- dma mode 0 & 1 is working
- device tree nodes re-created.
Cc: Vinod Koul <[email protected]>
Cc: Dan Williams <[email protected]>
Signed-off-by: Sebastian Andrzej Siewior <[email protected]>
Signed-off-by: Felipe Balbi <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/sctop.py')
0 files changed, 0 insertions, 0 deletions