| /* SPDX-License-Identifier: GPL-2.0 */ | |
| /* 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 |