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9399575dd3
This a set of fixes mostly to make the driver actually work: 1. Actually select the line for setting parameters and receiver disable/enable. 2. Select the line for receive and transmit interrupt handling correctly. 3. Report the transmitter empty state correctly. 4. Set the I/O type of ports correctly. 5. Perform polled transmission correctly. 6. Don't fix the console line at ttyS3. 7. Magic SysRq support. 8. Various small bits here and there. Tested with a DECstation 2100 (thanks Flo for making this possible). [akpm@osdl.org: fix typo] Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
68 lines
1.5 KiB
C
68 lines
1.5 KiB
C
/*
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* sercons.c
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* choose the right serial device at boot time
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*
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* triemer 6-SEP-1998
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* sercons.c is designed to allow the three different kinds
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* of serial devices under the decstation world to co-exist
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* in the same kernel. The idea here is to abstract
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* the pieces of the drivers that are common to this file
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* so that they do not clash at compile time and runtime.
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*
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* HK 16-SEP-1998 v0.002
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* removed the PROM console as this is not a real serial
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* device. Added support for PROM console in drivers/char/tty_io.c
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* instead. Although it may work to enable more than one
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* console device I strongly recommend to use only one.
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*/
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#include <linux/init.h>
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#include <asm/dec/machtype.h>
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#ifdef CONFIG_ZS
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extern int zs_init(void);
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#endif
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#ifdef CONFIG_SERIAL_CONSOLE
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#ifdef CONFIG_ZS
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extern void zs_serial_console_init(void);
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#endif
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#endif
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/* rs_init - starts up the serial interface -
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handle normal case of starting up the serial interface */
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#ifdef CONFIG_SERIAL
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int __init rs_init(void)
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{
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#ifdef CONFIG_ZS
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if (IOASIC)
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return zs_init();
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#endif
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return -ENXIO;
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}
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__initcall(rs_init);
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#endif
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#ifdef CONFIG_SERIAL_CONSOLE
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/* serial_console_init handles the special case of starting
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* up the console on the serial port
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*/
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static int __init decserial_console_init(void)
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{
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#ifdef CONFIG_ZS
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if (IOASIC)
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zs_serial_console_init();
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#endif
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return 0;
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}
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console_initcall(decserial_console_init);
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#endif
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