cvs commit: src/sys/dev/ic ns16550.h src/sys/dev/uart uart_dev_ns8250.c

[Benno Rice]

benno       2006-05-23 00:41:12 UTC

  FreeBSD src repository

  Modified files:
    sys/dev/ic           ns16550.h 
    sys/dev/uart         uart_dev_ns8250.c 
  Log:
  Allow uart(4)'s ns8250 driver to work with devices whose regshift is > 0.
  
  - Rename REG_DL to REG_DLL and REG_DLH.
  - Always treat DLL and DLH as two separate 8-bit registers instead of one
    16-bit register.
  
  Additionally, remove the probe for the high 4 bits of IER being 0 and don't
  assume we can always read/write 0 to/from those bits.
  
  These changes allow uart(4) to drive the UARTs on the Intel XScale PXA255.
  
  Reviewed by:    marcel
  
  Revision  Changes    Path
  1.17      +2 -1      src/sys/dev/ic/ns16550.h
  1.22      +16 -24    src/sys/dev/uart/uart_dev_ns8250.c