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| author | Venkata(Muni) Anda <muni@nvidia.com> | 2010-01-21 12:24:41 -0800 |
|---|---|---|
| committer | Venkata(Muni) Anda <muni@nvidia.com> | 2010-01-21 22:21:12 -0800 |
| commit | 5b340d629f24131fd5cffee7efa277ba5e1bd400 (patch) | |
| tree | b327f1dd4f3917f9a7d72426c312fc76a96b77a2 /lib/string_helpers.c | |
| parent | 5e6f67c8be842c0edb243638e2b17e56a1704692 (diff) | |
tegra: Update the UART Tx data path and added new system DMA API.
-Using workqueues instead of tasklets for Tx DMA.
-Waiting for the FIFO to drain after the DMA is done, as it is apparently
needed by the HW.
- Added new DMA API to check if the req is already queued. Using
tegra_dma_is_empty might not be correct as one DMA chanel can be serviced
by multiple clients.
With this change, i can browse the BT sometimes. It takes some retires to
enable the BT.
Also during the operation of the BT, i still see the messages like
"out-of-order packet arrived"
Don't know if this is an issue with ther UART or the BT protocol.
Change-Id: I1502ad8178c3c95b4128c564c9f3c1d957195d46
Diffstat (limited to 'lib/string_helpers.c')
0 files changed, 0 insertions, 0 deletions