diff options
| author | Adrian McMenamin <adrian@mcmen.demon.co.uk> | 2007-09-21 15:55:55 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2007-09-21 15:55:55 +0900 |
| commit | 17be2d2b1c333e1e4c378369ba90ab2dd11c589a (patch) | |
| tree | 2858bf8499f28bdf6422a89d896f6d8885c3231b /include/asm-sh/dreamcast | |
| parent | e87ab0c43c30faa0f4b337bfa87bce7923e67485 (diff) | |
sh: Add maple bus support for the SEGA Dreamcast.
The Maple bus is SEGA's proprietary serial bus for peripherals
(keyboard, mouse, controller etc). The bus is capable of some
(limited) hotplugging and operates at up to 2 M/bits.
Drivers of one sort or another existed/exist for 2.4 and a rudimentary
port, which didn't support the 2.6 device driver model was also in
existence.
This driver - for the bus logic itself and for the keyboard (other
drivers will follow) are based on the code and concepts of those old
drivers but have lots of completely rewritten parts.
I have the maple bus code as a built in now as that seems the sane and
rational way to handle something like that - you either want the bus
or you don't.
Signed-off-by: Adrian McMenamin <adrian@mcmen.demon.co.uk>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'include/asm-sh/dreamcast')
| -rw-r--r-- | include/asm-sh/dreamcast/maple.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/include/asm-sh/dreamcast/maple.h b/include/asm-sh/dreamcast/maple.h new file mode 100644 index 00000000000..51f6a87f1f1 --- /dev/null +++ b/include/asm-sh/dreamcast/maple.h @@ -0,0 +1,37 @@ +#ifndef __ASM_MAPLE_H +#define __ASM_MAPLE_H + +#define MAPLE_PORTS 4 +#define MAPLE_PNP_INTERVAL HZ +#define MAPLE_MAXPACKETS 8 +#define MAPLE_DMA_ORDER 14 +#define MAPLE_DMA_SIZE (1 << MAPLE_DMA_ORDER) +#define MAPLE_DMA_PAGES ((MAPLE_DMA_ORDER > PAGE_SHIFT) ? \ + MAPLE_DMA_ORDER - PAGE_SHIFT : 0) + +/* Maple Bus registers */ +#define MAPLE_BASE 0xa05f6c00 +#define MAPLE_DMAADDR (MAPLE_BASE+0x04) +#define MAPLE_TRIGTYPE (MAPLE_BASE+0x10) +#define MAPLE_ENABLE (MAPLE_BASE+0x14) +#define MAPLE_STATE (MAPLE_BASE+0x18) +#define MAPLE_SPEED (MAPLE_BASE+0x80) +#define MAPLE_RESET (MAPLE_BASE+0x8c) + +#define MAPLE_MAGIC 0x6155404f +#define MAPLE_2MBPS 0 +#define MAPLE_TIMEOUT(n) ((n)<<15) + +/* Function codes */ +#define MAPLE_FUNC_CONTROLLER 0x001 +#define MAPLE_FUNC_MEMCARD 0x002 +#define MAPLE_FUNC_LCD 0x004 +#define MAPLE_FUNC_CLOCK 0x008 +#define MAPLE_FUNC_MICROPHONE 0x010 +#define MAPLE_FUNC_ARGUN 0x020 +#define MAPLE_FUNC_KEYBOARD 0x040 +#define MAPLE_FUNC_LIGHTGUN 0x080 +#define MAPLE_FUNC_PURUPURU 0x100 +#define MAPLE_FUNC_MOUSE 0x200 + +#endif /* __ASM_MAPLE_H */ |