Hi,
here is v3 of this series. It's largely the same as before, but I
adjusted 'tty: xuartps: Don't consider circular buffer when enabling
transmitter' according to Peter's suggestions.
I also spent some time trying to get Peter's test for flow control and
xchar running. The xchar thing fails and will need some more work, but I
think in general it should be possible to get it to work.
The flow control test passes:
root@Xilinx-ZC1751-DC1:~# ./flow /dev/ttyPS0
Test flow control on /dev/ttyPS0
begin test1
patterns sent: 223 recvd: 208
read distribution: 1 = 0
2+ = 0
4+ = 0
8+ = 0
16+ = 0
32+ = 643
64+ = 0
128+ = 0
256+ = 0
512+ = 0
PASSED
root@Xilinx-ZC1751-DC1:~# ./flow /dev/ttyPS1
Test flow control on /dev/ttyPS1
begin test1
patterns sent: 223 recvd: 208
read distribution: 1 = 0
2+ = 0
4+ = 0
8+ = 0
16+ = 0
32+ = 643
64+ = 0
128+ = 0
256+ = 0
512+ = 0
PASSED
Sören
Sören Brinkmann (10):
tty: xuartps: Beautify read-modify writes
tty: xuartps: Use spinlock to serialize HW access
tty: xuartps: Don't consider circular buffer when enabling transmitter
tty: xuartps: Clear interrupt status register in shutdown
tty: xuartps: Improve startup function
tty: xuartps: Keep lock for whole ISR
tty: xuartps: Acquire port lock for shutdown
tty: xuartps: Move RX path into helper function
tty: xuartps: Only handle RX IRQs when RX is enabled
tty: xuartps: Cleanup: Reformat if-else
drivers/tty/serial/xilinx_uartps.c | 246 +++++++++++++++++++++----------------
1 file changed, 137 insertions(+), 109 deletions(-)
--
2.6.3.3.g9bb996a
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