cvs commit: src/sys/arm/at91 uart_dev_at91usart.c src/sys/arm/sa11x0 uart_dev_sa1110.c src/sys/dev/uart uart_cpu.h uart_dev_ns8250.c uart_dev_sab82532.c uart_dev_z8530.c uart_kbd_sun.c

[Marius Strobl]

marius      2007-01-18 22:01:20 UTC

  FreeBSD src repository

  Modified files:
    sys/arm/at91         uart_dev_at91usart.c 
    sys/arm/sa11x0       uart_dev_sa1110.c 
    sys/dev/uart         uart_cpu.h uart_dev_ns8250.c 
                         uart_dev_sab82532.c uart_dev_z8530.c 
                         uart_kbd_sun.c 
  Log:
  - Add a uart_rxready() and corresponding device-specific implementations
    that can be used to check whether receive data is ready, i.e. whether
    the subsequent call of uart_poll() should return a char, and unlike
    uart_poll() doesn't actually receive data.
  - Remove the device-specific implementations of uart_poll() and implement
    uart_poll() in terms of uart_getc() and the newly added uart_rxready()
    in order to minimize code duplication.
  - In sunkbd(4) take advantage of uart_rxready() and use it to implement
    the polled mode part of sunkbd_check() so we don't need to buffer a
    potentially read char in the softc.
  - Fix some mis-indentation in sunkbd_read_char().
  
  Discussed with: marcel
  
  Revision  Changes    Path
  1.11      +5 -7      src/sys/arm/at91/uart_dev_at91usart.c
  1.7       +5 -6      src/sys/arm/sa11x0/uart_dev_sa1110.c
  1.11      +16 -2     src/sys/dev/uart/uart_cpu.h
  1.24      +4 -6      src/sys/dev/uart/uart_dev_ns8250.c
  1.15      +4 -6      src/sys/dev/uart/uart_dev_sab82532.c
  1.21      +4 -6      src/sys/dev/uart/uart_dev_z8530.c
  1.11      +7 -15     src/sys/dev/uart/uart_kbd_sun.c