LXR linux/arch/m68k/include/asm/serial.h

   1/*
   2 * include/asm-m68k/serial.h
   3 *
   4 * currently this seems useful only for a Q40,
   5 * it's an almost exact copy of ../asm-alpha/serial.h
   6 *
   7 */
   8
   9
  10/*
  11 * This assumes you have a 1.8432 MHz clock for your UART.
  12 *
  13 * It'd be nice if someone built a serial card with a 24.576 MHz
  14 * clock, since the 16550A is capable of handling a top speed of 1.5
  15 * megabits/second; but this requires the faster clock.
  16 */
  17#define BASE_BAUD ( 1843200 / 16 )
  18
  19/* Standard COM flags (except for COM4, because of the 8514 problem) */
  20#ifdef CONFIG_SERIAL_DETECT_IRQ
  21#define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ)
  22#define STD_COM4_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_AUTO_IRQ)
  23#else
  24#define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST)
  25#define STD_COM4_FLAGS ASYNC_BOOT_AUTOCONF
  26#endif
  27
  28#ifdef CONFIG_ISA
  29#define SERIAL_PORT_DFNS                        \
  30        /* UART CLK   PORT IRQ     FLAGS        */                      \
  31        { 0, BASE_BAUD, 0x3F8, 4, STD_COM_FLAGS },      /* ttyS0 */     \
  32        { 0, BASE_BAUD, 0x2F8, 3, STD_COM_FLAGS },      /* ttyS1 */     \
  33        { 0, BASE_BAUD, 0x3E8, 4, STD_COM_FLAGS },      /* ttyS2 */     \
  34        { 0, BASE_BAUD, 0x2E8, 3, STD_COM4_FLAGS },     /* ttyS3 */
  35#endif
  36