1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 21da177e4SLinus Torvalds /* Miscellaneous definitions for VIA chipsets 31da177e4SLinus Torvalds Currently used only by drivers/parport/parport_pc.c */ 41da177e4SLinus Torvalds 51da177e4SLinus Torvalds /* Values for SuperIO function select configuration register */ 61da177e4SLinus Torvalds #define VIA_FUNCTION_PARPORT_SPP 0x00 71da177e4SLinus Torvalds #define VIA_FUNCTION_PARPORT_ECP 0x01 81da177e4SLinus Torvalds #define VIA_FUNCTION_PARPORT_EPP 0x02 91da177e4SLinus Torvalds #define VIA_FUNCTION_PARPORT_DISABLE 0x03 101da177e4SLinus Torvalds #define VIA_FUNCTION_PROBE 0xFF /* Special magic value to be used in code, not to be written into chip */ 111da177e4SLinus Torvalds 121da177e4SLinus Torvalds /* Bits for parallel port mode configuration register */ 131da177e4SLinus Torvalds #define VIA_PARPORT_ECPEPP 0X20 141da177e4SLinus Torvalds #define VIA_PARPORT_BIDIR 0x80 151da177e4SLinus Torvalds 161da177e4SLinus Torvalds /* VIA configuration registers */ 171da177e4SLinus Torvalds #define VIA_CONFIG_INDEX 0x3F0 181da177e4SLinus Torvalds #define VIA_CONFIG_DATA 0x3F1 191da177e4SLinus Torvalds 201da177e4SLinus Torvalds /* Mask for parallel port IRQ bits (in ISA PnP IRQ routing register 1) */ 211da177e4SLinus Torvalds #define VIA_IRQCONTROL_PARALLEL 0xF0 221da177e4SLinus Torvalds /* Mask for parallel port DMA bits (in ISA PnP DMA routing register) */ 231da177e4SLinus Torvalds #define VIA_DMACONTROL_PARALLEL 0x0C 24