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f4e772708b
This covers modules which need to initialize before task_start(), but don't particularly care in what order they're initialized. Signed-off-by: Randall Spangler <rspangler@chromium.org> BUG=none TEST=if it boots, it works Change-Id: I69829aac8d1c3c14ee04916a794b84bbf03a09eb
70 lines
2.2 KiB
C
70 lines
2.2 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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/* Manually generate an IRQ to host.
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* Note that the irq_num == 0 would set the AH bit (Active High).
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*/
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void lpc_manual_irq(int irq_num);
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/* Return a pointer to the host command data buffer. This buffer must
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* only be accessed between a notification to host_command_received()
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* and a subsequent call to lpc_SendHostResponse(). <slot> is 0 for
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* kernel-originated commands, 1 for usermode-originated commands. */
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uint8_t *lpc_get_host_range(int slot);
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/* Return a pointer to the memory-mapped buffer. This buffer is writable at
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* any time, and the host can read it at any time. */
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uint8_t *lpc_get_memmap_range(void);
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/* Send a result code to a host command. <slot> is 0 for kernel-originated
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* commands, 1 for usermode-originated commands. */
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void lpc_send_host_response(int slot, int result);
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/* Return true if the TOH is still set */
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int lpc_keyboard_has_char(void);
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/* Send a byte to host via port 0x60 and asserts IRQ if specified. */
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void lpc_keyboard_put_char(uint8_t chr, int send_irq);
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/* Return non-zero if the COMx interface has received a character. */
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int lpc_comx_has_char(void);
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/* Return the next character pending on the COMx interface. */
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int lpc_comx_get_char(void);
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/* Put a character to the COMx LPC interface. */
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void lpc_comx_put_char(int c);
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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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/* Set one or more SCI/SMI event bits. */
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void lpc_set_host_events(uint32_t mask);
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/* Clear one or more SCI/SMI event bits. Write 1 to a bit to clear it. */
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void lpc_clear_host_events(uint32_t mask);
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/* Return the raw SCI/SMI event state. */
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uint32_t lpc_get_host_events(void);
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/* Set the event mask for the specified event type. */
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void lpc_set_host_event_mask(enum lpc_host_event_type type, uint32_t mask);
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/* Return the event mask for the specified event type. */
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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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