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Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1da177e4 LT |
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 |