| Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | /* Miscellaneous definitions for VIA chipsets |
| 3 | Currently used only by drivers/parport/parport_pc.c */ |
| 4 | |
| 5 | /* Values for SuperIO function select configuration register */ |
| 6 | #define VIA_FUNCTION_PARPORT_SPP 0x00 |
| 7 | #define VIA_FUNCTION_PARPORT_ECP 0x01 |
| 8 | #define VIA_FUNCTION_PARPORT_EPP 0x02 |
| 9 | #define VIA_FUNCTION_PARPORT_DISABLE 0x03 |
| 10 | #define VIA_FUNCTION_PROBE 0xFF /* Special magic value to be used in code, not to be written into chip */ |
| 11 | |
| 12 | /* Bits for parallel port mode configuration register */ |
| 13 | #define VIA_PARPORT_ECPEPP 0X20 |
| 14 | #define VIA_PARPORT_BIDIR 0x80 |
| 15 | |
| 16 | /* VIA configuration registers */ |
| 17 | #define VIA_CONFIG_INDEX 0x3F0 |
| 18 | #define VIA_CONFIG_DATA 0x3F1 |
| 19 | |
| 20 | /* Mask for parallel port IRQ bits (in ISA PnP IRQ routing register 1) */ |
| 21 | #define VIA_IRQCONTROL_PARALLEL 0xF0 |
| 22 | /* Mask for parallel port DMA bits (in ISA PnP DMA routing register) */ |
| 23 | #define VIA_DMACONTROL_PARALLEL 0x0C |