mirror of
https://github.com/Telecominfraproject/OpenCellular.git
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ef6e93dc1b
Add espi driver for x86-based platform which support espi interface such
as skylake and so on.
Added source:
1. espi.c: Add drivers which supports the utilities of peripheral and
virtual-wire channels so far.
2. espi.h: Add espi virtual-wire declaration for power sequence FW.
Modified sources:
1. lpc.c: Add interrupts and initialization steps for espi.
2. gpio.c: Add interrupt handler of espi reset.
BRANCH=none
BUG=chrome-os-partner:34346
TEST=make buildall -j; test nuvoton IC specific drivers
Change-Id: Ie80afe79d85aba47fc0b72898a8374c2898ec114
Signed-off-by: Mulin Chao <mlchao@nuvoton.com>
Reviewed-on: https://chromium-review.googlesource.com/366181
Reviewed-by: Randall Spangler <rspangler@chromium.org>
76 lines
1.9 KiB
C
76 lines
1.9 KiB
C
/* Copyright (c) 2016 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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/* eSPI module for Chrome EC */
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#ifndef __CROS_EC_ESPI_H
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#define __CROS_EC_ESPI_H
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#include "gpio_signal.h"
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/* Signal through VW */
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enum espi_vw_signal {
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VW_SIGNAL_BASE = GPIO_COUNT,
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VW_SLP_S3_L, /* index 02h (In) */
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VW_SLP_S4_L,
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VW_SLP_S5_L,
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VW_SUS_STAT_L, /* index 03h (In) */
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VW_PLTRST_L,
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VW_OOB_RST_WARN,
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VW_OOB_RST_ACK, /* index 04h (Out) */
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VW_WAKE_L,
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VW_PME_L,
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VW_ERROR_FATAL, /* index 05h (Out) */
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VW_ERROR_NON_FATAL,
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/* Merge bit 3/0 into one signal. Need to set them simultaneously */
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VW_SLAVE_BTLD_STATUS_DONE,
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VW_SCI_L, /* index 06h (Out) */
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VW_SMI_L,
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VW_RCIN_L,
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VW_HOST_RST_ACK,
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VW_HOST_RST_WARN, /* index 07h (In) */
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VW_SUS_ACK, /* index 40h (Out) */
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VW_SUS_WARN_L, /* index 41h (In) */
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VW_SUS_PWRDN_ACK_L,
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VW_SLP_A_L,
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VW_SLP_LAN, /* index 42h (In) */
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VW_SLP_WLAN,
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};
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/**
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* Set eSPI Virtual-Wire signal to Host
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*
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* @param signal vw signal needs to set
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* @param level level of vw signal
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* @return EC_SUCCESS, or non-zero if error.
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*/
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int espi_vw_set_wire(enum espi_vw_signal signal, uint8_t level);
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/**
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* Get eSPI Virtual-Wire signal from host
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*
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* @param signal vw signal needs to get
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* @return 1: set by host, otherwise: no signal
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*/
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int espi_vw_get_wire(enum espi_vw_signal signal);
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/**
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* Enable VW interrupt of power sequence signal
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*
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* @param signal vw signal needs to enable interrupt
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* @return EC_SUCCESS, or non-zero if error.
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*/
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int espi_vw_enable_wire_int(enum espi_vw_signal signal);
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/**
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* Disable VW interrupt of power sequence signal
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*
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* @param signal vw signal needs to disable interrupt
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* @return EC_SUCCESS, or non-zero if error.
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*/
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int espi_vw_disable_wire_int(enum espi_vw_signal signal);
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#endif /* __CROS_EC_ESPI_H */
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