common/espi.c

/* Copyright (c) 2017 The Chromium OS Authors. All rights reserved.
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

/* eSPI common functionality for Chrome EC */

#include "common.h"
#include "gpio.h"
#include "registers.h"
#include "espi.h"
#include "timer.h"
#include "util.h"


const char *espi_vw_names[] = {
	"VW_SLP_S3_L",
	"VW_SLP_S4_L",
	"VW_SLP_S5_L",
	"VW_SUS_STAT_L",
	"VW_PLTRST_L",
	"VW_OOB_RST_WARN",
	"VW_OOB_RST_ACK",
	"VW_WAKE_L",
	"VW_PME_L",
	"VW_ERROR_FATAL",
	"VW_ERROR_NON_FATAL",
	/* Merge bit 3/0 into one signal. Need to set them simultaneously */
	"VW_SLAVE_BTLD_STATUS_DONE",
	"VW_SCI_L",
	"VW_SMI_L",
	"VW_RCIN_L",
	"VW_HOST_RST_ACK",
	"VW_HOST_RST_WARN",
	"VW_SUS_ACK",
	"VW_SUS_WARN_L",
	"VW_SUS_PWRDN_ACK_L",
	"VW_SLP_A_L",
	"VW_SLP_LAN",
	"VW_SLP_WLAN",
};
BUILD_ASSERT(ARRAY_SIZE(espi_vw_names) == VW_SIGNAL_COUNT);


const char *espi_vw_get_wire_name(enum espi_vw_signal signal)
{
	int idx;

	if ((uint32_t)signal > VW_SIGNAL_BASE) {
		idx = (uint32_t)signal - (VW_SIGNAL_BASE + 1);
		if (idx < ARRAY_SIZE(espi_vw_names))
			return espi_vw_names[idx];
	}

	return NULL;
}


int espi_signal_is_vw(int signal)
{
	enum espi_vw_signal sig = (enum espi_vw_signal)signal;

	if ((sig > VW_SIGNAL_BASE) && (sig < VW_SIGNAL_BASE_END))
		return 1;

	return 0;
}