44 строки
1.5 KiB
C
44 строки
1.5 KiB
C
/*
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* include/asm-ppc/pc_serial.h
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*
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* This is basically a copy of include/asm-i386/serial.h.
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* It is used on platforms which have an ISA bus and thus are likely
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* to have PC-style serial ports at the legacy I/O port addresses.
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* It also includes the definitions for the fourport, accent, boca
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* and hub6 multiport serial cards, although I have never heard of
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* anyone using any of those on a PPC platform. -- paulus
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*/
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#include <linux/config.h>
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/*
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* This assumes you have a 1.8432 MHz clock for your UART.
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*
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* It'd be nice if someone built a serial card with a 24.576 MHz
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* clock, since the 16550A is capable of handling a top speed of 1.5
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* megabits/second; but this requires the faster clock.
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*/
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#define BASE_BAUD ( 1843200 / 16 )
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#ifdef CONFIG_SERIAL_MANY_PORTS
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#define RS_TABLE_SIZE 64
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#else
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#define RS_TABLE_SIZE 4
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#endif
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/* Standard COM flags (except for COM4, because of the 8514 problem) */
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#ifdef CONFIG_SERIAL_DETECT_IRQ
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#define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ)
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#define STD_COM4_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_AUTO_IRQ)
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#else
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#define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST)
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#define STD_COM4_FLAGS ASYNC_BOOT_AUTOCONF
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#endif
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#define SERIAL_PORT_DFNS \
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/* UART CLK PORT IRQ FLAGS */ \
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{ 0, BASE_BAUD, 0x3F8, 4, STD_COM_FLAGS }, /* ttyS0 */ \
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{ 0, BASE_BAUD, 0x2F8, 3, STD_COM_FLAGS }, /* ttyS1 */ \
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{ 0, BASE_BAUD, 0x3E8, 4, STD_COM_FLAGS }, /* ttyS2 */ \
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{ 0, BASE_BAUD, 0x2E8, 3, STD_COM4_FLAGS }, /* ttyS3 */
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