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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 00:20:36 +0200 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 00:20:36 +0200 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/input/serio/i8042.h | |
download | linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'drivers/input/serio/i8042.h')
-rw-r--r-- | drivers/input/serio/i8042.h | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/drivers/input/serio/i8042.h b/drivers/input/serio/i8042.h new file mode 100644 index 000000000000..13835039a2a7 --- /dev/null +++ b/drivers/input/serio/i8042.h @@ -0,0 +1,133 @@ +#ifndef _I8042_H +#define _I8042_H + +#include <linux/config.h> + +/* + * Copyright (c) 1999-2002 Vojtech Pavlik + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + */ + +/* + * Arch-dependent inline functions and defines. + */ + +#if defined(CONFIG_MACH_JAZZ) +#include "i8042-jazzio.h" +#elif defined(CONFIG_SGI_IP22) +#include "i8042-ip22io.h" +#elif defined(CONFIG_PPC) +#include "i8042-ppcio.h" +#elif defined(CONFIG_SPARC32) || defined(CONFIG_SPARC64) +#include "i8042-sparcio.h" +#elif defined(CONFIG_X86) || defined(CONFIG_IA64) +#include "i8042-x86ia64io.h" +#else +#include "i8042-io.h" +#endif + +/* + * This is in 50us units, the time we wait for the i8042 to react. This + * has to be long enough for the i8042 itself to timeout on sending a byte + * to a non-existent mouse. + */ + +#define I8042_CTL_TIMEOUT 10000 + +/* + * When the device isn't opened and it's interrupts aren't used, we poll it at + * regular intervals to see if any characters arrived. If yes, we can start + * probing for any mouse / keyboard connected. This is the period of the + * polling. + */ + +#define I8042_POLL_PERIOD HZ/20 + +/* + * Status register bits. + */ + +#define I8042_STR_PARITY 0x80 +#define I8042_STR_TIMEOUT 0x40 +#define I8042_STR_AUXDATA 0x20 +#define I8042_STR_KEYLOCK 0x10 +#define I8042_STR_CMDDAT 0x08 +#define I8042_STR_MUXERR 0x04 +#define I8042_STR_IBF 0x02 +#define I8042_STR_OBF 0x01 + +/* + * Control register bits. + */ + +#define I8042_CTR_KBDINT 0x01 +#define I8042_CTR_AUXINT 0x02 +#define I8042_CTR_IGNKEYLOCK 0x08 +#define I8042_CTR_KBDDIS 0x10 +#define I8042_CTR_AUXDIS 0x20 +#define I8042_CTR_XLATE 0x40 + +/* + * Commands. + */ + +#define I8042_CMD_CTL_RCTR 0x0120 +#define I8042_CMD_CTL_WCTR 0x1060 +#define I8042_CMD_CTL_TEST 0x01aa + +#define I8042_CMD_KBD_DISABLE 0x00ad +#define I8042_CMD_KBD_ENABLE 0x00ae +#define I8042_CMD_KBD_TEST 0x01ab +#define I8042_CMD_KBD_LOOP 0x11d2 + +#define I8042_CMD_AUX_DISABLE 0x00a7 +#define I8042_CMD_AUX_ENABLE 0x00a8 +#define I8042_CMD_AUX_TEST 0x01a9 +#define I8042_CMD_AUX_SEND 0x10d4 +#define I8042_CMD_AUX_LOOP 0x11d3 + +#define I8042_CMD_MUX_PFX 0x0090 +#define I8042_CMD_MUX_SEND 0x1090 + +/* + * Return codes. + */ + +#define I8042_RET_CTL_TEST 0x55 + +/* + * Expected maximum internal i8042 buffer size. This is used for flushing + * the i8042 buffers. + */ + +#define I8042_BUFFER_SIZE 16 + +/* + * Number of AUX ports on controllers supporting active multiplexing + * specification + */ + +#define I8042_NUM_MUX_PORTS 4 + +/* + * Debug. + */ + +#ifdef DEBUG +static unsigned long i8042_start_time; +#define dbg_init() do { i8042_start_time = jiffies; } while (0) +#define dbg(format, arg...) \ + do { \ + if (i8042_debug) \ + printk(KERN_DEBUG __FILE__ ": " format " [%d]\n" , \ + ## arg, (int) (jiffies - i8042_start_time)); \ + } while (0) +#else +#define dbg_init() do { } while (0) +#define dbg(format, arg...) do {} while (0) +#endif + +#endif /* _I8042_H */ |