e97d320df2
While we assume a keyboard is attached, we send an echo command every 500ms. If there is no data coming from the keyboard within 200ms, we assume it was detached. Correspondingly, if we assume no keyboard is attached, we run an echo command once per second. Change-Id: I2c75182761729bf30711305f3d8b9d43eafad675 Signed-off-by: Nico Huber <nico.h@gmx.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/47593 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
67 lines
2.7 KiB
C
67 lines
2.7 KiB
C
/*
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*
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* Copyright 2018 Google LLC
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef __DRIVERS_I8042_I8042_H__
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#define __DRIVERS_I8042_I8042_H__
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/* Port 0x64 commands */
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#define I8042_CMD_RD_CMD_BYTE 0x20
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#define I8042_CMD_WR_CMD_BYTE 0x60
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#define I8042_CMD_BYTE_XLATE (1 << 6)
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#define I8042_CMD_DIS_AUX 0xa7
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#define I8042_CMD_EN_AUX 0xa8
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#define I8042_CMD_AUX_TEST 0xa9
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#define I8042_CMD_SELF_TEST 0xaa
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#define I8042_SELF_TEST_RSP 0x55
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#define I8042_CMD_KB_TEST 0xab
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#define I8042_CMD_DIAG_DUMP 0xac
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#define I8042_CMD_DIS_KB 0xad
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#define I8042_CMD_EN_KB 0xae
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#define I8042_CMD_RD_INPUT_PORT 0xc0
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#define I8042_CMD_RD_OUTPUT_PORT 0xd0
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#define I8042_CMD_WR_OUTPUT_PORT 0xd1
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#define I8042_CMD_RD_TEST_INPUTS 0xe0
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/* Port 0x60 keyboard commands */
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#define I8042_KBCMD_SET_MODE_IND 0xed
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#define I8042_MODE_CAPS_LOCK_ON (1 << 2)
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#define I8042_MODE_CAPS_LOCK_OFF (0 << 2)
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#define I8042_MODE_NUM_LOCK_ON (1 << 1)
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#define I8042_MODE_NUM_LOCK_OFF (0 << 1)
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#define I8042_MODE_SCROLL_LOCK_ON (1 << 0)
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#define I8042_MODE_SCROLL_LOCK_OFF (0 << 0)
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#define I8042_KBCMD_ECHO 0xee
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#define I8042_KBCMD_SET_SCANCODE 0xf0
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#define I8042_KBCMD_SET_TYPEMATIC 0xf3
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#define I8042_KBCMD_EN 0xf4
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#define I8042_KBCMD_DEFAULT_DIS 0xf5
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#define I8042_KBCMD_SET_DEFAULT 0xf6
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#define I8042_KBCMD_RESEND 0xfe
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#define I8042_KBCMD_RESET 0xff
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#endif /* __DRIVERS_I8042_I8042_H__ */
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