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16 September 2024, 20:19:31 UTC
Revision 56731b16ce5a9f11cb9496d76e4ffac11987fc85 authored by Brian Keiseler on 12 January 2015, 11:04:12 UTC, committed by Brian Keiseler on 12 January 2015, 11:04:12 UTC 
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Tip revision: 56731b16ce5a9f11cb9496d76e4ffac11987fc85 authored by Brian Keiseler on 12 January 2015, 11:04:12 UTC
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Tip revision: 56731b1
via.h 
/* Miscellaneous definitions for VIA chipsets
   Currently used only by drivers/parport/parport_pc.c */

/* Values for SuperIO function select configuration register */
#define VIA_FUNCTION_PARPORT_SPP     0x00
#define VIA_FUNCTION_PARPORT_ECP     0x01
#define VIA_FUNCTION_PARPORT_EPP     0x02
#define VIA_FUNCTION_PARPORT_DISABLE 0x03
#define VIA_FUNCTION_PROBE           0xFF /* Special magic value to be used in code, not to be written into chip */

/* Bits for parallel port mode configuration register */
#define VIA_PARPORT_ECPEPP 0X20
#define VIA_PARPORT_BIDIR  0x80

/* VIA configuration registers */
#define VIA_CONFIG_INDEX 0x3F0
#define VIA_CONFIG_DATA  0x3F1

/* Mask for parallel port IRQ bits (in ISA PnP IRQ routing register 1) */
#define VIA_IRQCONTROL_PARALLEL 0xF0
/* Mask for parallel port DMA bits (in ISA PnP DMA routing register) */
#define VIA_DMACONTROL_PARALLEL 0x0C
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