Re: [PATCH V2] serial/uart: Add tunable RX interrupt trigger I/F of FIFO buffers

2014-02-17 Thread Yoshihiro YUNOMAE
Hi Alan, Thank you for your reply. (2014/02/18 0:12), One Thousand Gnomes wrote: According to HW specification of serial UART devices, RX interrupt trigger can be changed, but the trigger is hard-coded. For example, RX interrupt trigger in 16550A can be set to 1, 4, 8, or 14 bytes for HW, but c

Re: [PATCH V2] serial/uart: Add tunable RX interrupt trigger I/F of FIFO buffers

2014-02-17 Thread One Thousand Gnomes
> According to HW specification of serial UART devices, RX interrupt trigger > can be changed, but the trigger is hard-coded. For example, RX interrupt > trigger > in 16550A can be set to 1, 4, 8, or 14 bytes for HW, but current driver sets > the trigger to only 8bytes. > > This patch makes a 165

[PATCH V2] serial/uart: Add tunable RX interrupt trigger I/F of FIFO buffers

2014-02-16 Thread Yoshihiro YUNOMAE
Add tunable RX interrupt trigger I/F of FIFO buffers. Serial devices are used as not only message communication devices but control or sending communication devices. For the latter uses, normally small data will be exchanged, so user applications want to receive data unit as soon as possible for re