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https://github.com/Telecominfraproject/OpenCellular.git
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25bbb6b5de
Add i8042 output port commands (0xf0-0xff), I8042_ENABLE_A20 and I8042_DISABLE_A20. BUG=chrome-os-partner:13119, BRANCH=None TEST=Tested on W7 installer. No KB error shown on EC console. Change-Id: I9ad1fd7baa10683ef18ccf13faf09dc0cefcca0a Signed-off-by: Louis Yung-Chieh Lo <yjlou@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/34994 Reviewed-by: Stefan Reinauer <reinauer@chromium.org>
95 lines
2.0 KiB
C
95 lines
2.0 KiB
C
/* Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/* LPC module for Chrome EC */
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#ifndef __CROS_EC_LPC_H
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#define __CROS_EC_LPC_H
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#include "common.h"
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/**
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* Return a pointer to the memory-mapped buffer.
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*
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* This buffer is writable at any time, and the host can read it at any time.
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*/
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uint8_t *lpc_get_memmap_range(void);
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/**
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* Return true if keyboard data is waiting for the host to read (TOH is still
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* set).
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*/
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int lpc_keyboard_has_char(void);
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/* Return true if the FRMH is still set */
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int lpc_keyboard_input_pending(void);
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/**
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* Send a byte to host via keyboard port 0x60.
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*
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* @param chr Byte to send
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* @param send_irq If non-zero, asserts IRQ
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*/
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void lpc_keyboard_put_char(uint8_t chr, int send_irq);
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/**
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* Clear the keyboard buffer.
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*/
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void lpc_keyboard_clear_buffer(void);
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/**
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* Send an IRQ to host if there is a byte in buffer already.
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*/
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void lpc_keyboard_resume_irq(void);
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/**
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* Return non-zero if the COMx interface has received a character.
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*/
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int lpc_comx_has_char(void);
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/**
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* Return the next character pending on the COMx interface.
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*/
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int lpc_comx_get_char(void);
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/**
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* Put a character to the COMx LPC interface.
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*/
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void lpc_comx_put_char(int c);
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/*
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* Low-level LPC interface for host events.
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*
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* For use by host_event_commands.c. Other modules should use the methods
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* provided in host_command.h.
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*/
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/* Types of host events */
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enum lpc_host_event_type {
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LPC_HOST_EVENT_SMI = 0,
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LPC_HOST_EVENT_SCI,
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LPC_HOST_EVENT_WAKE,
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};
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/**
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* Set the event state.
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*/
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void lpc_set_host_event_state(uint32_t mask);
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/**
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* Set the event mask for the specified event type.
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*
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* @param type Event type
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* @param mask New event mask
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*/
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void lpc_set_host_event_mask(enum lpc_host_event_type type, uint32_t mask);
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/**
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* Return the event mask for the specified event type.
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*/
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uint32_t lpc_get_host_event_mask(enum lpc_host_event_type type);
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#endif /* __CROS_EC_LPC_H */
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