arch/x86/include/asm/serial.h

   1 #ifndef _ASM_X86_SERIAL_H
   2 #define _ASM_X86_SERIAL_H
   3
   4 /*
   5  * This assumes you have a 1.8432 MHz clock for your UART.
   6  *
   7  * It'd be nice if someone built a serial card with a 24.576 MHz
   8  * clock, since the 16550A is capable of handling a top speed of 1.5
   9  * megabits/second; but this requires the faster clock.
  10  */
  11 #define BASE_BAUD ( 1843200 / 16 )
  12
  13 /* Standard COM flags (except for COM4, because of the 8514 problem) */
  14 #ifdef CONFIG_SERIAL_DETECT_IRQ
  15 #define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ)
  16 #define STD_COM4_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_AUTO_IRQ)
  17 #else
  18 #define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST)
  19 #define STD_COM4_FLAGS ASYNC_BOOT_AUTOCONF
  20 #endif
  21
  22 #define SERIAL_PORT_DFNS                        \
  23         /* UART CLK   PORT IRQ     FLAGS        */                      \
  24         { 0, BASE_BAUD, 0x3F8, 4, STD_COM_FLAGS },      /* ttyS0 */     \
  25         { 0, BASE_BAUD, 0x2F8, 3, STD_COM_FLAGS },      /* ttyS1 */     \
  26         { 0, BASE_BAUD, 0x3E8, 4, STD_COM_FLAGS },      /* ttyS2 */     \
  27         { 0, BASE_BAUD, 0x2E8, 3, STD_COM4_FLAGS },     /* ttyS3 */
  28
  29 #endif /* _ASM_X86_SERIAL_H */