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/* Copyright (c) 2013 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.
*/
/* Special AC Adapter logic for Falco */
#include "adc.h"
#include "common.h"
#include "console.h"
#include "util.h"
enum adapter_type {
ADAPTER_UNKNOWN,
ADAPTER_45W,
ADAPTER_65W,
ADAPTER_90W,
};
static const char * const adapter_str[] = {
"unknown",
"45W",
"65W",
"90W"
};
static enum adapter_type identify_adapter(void)
{
int mv;
mv = adc_read_channel(ADC_AC_ADAPTER_ID_VOLTAGE);
if (mv >= 434 && mv <= 554)
return ADAPTER_45W;
if (mv >= 561 && mv <= 717)
return ADAPTER_65W;
if (mv >= 725 && mv <= 925)
return ADAPTER_90W;
return ADAPTER_UNKNOWN;
}
static int command_adapter(int argc, char **argv)
{
ccprintf("%s\n", adapter_str[identify_adapter()]);
return EC_SUCCESS;
}
DECLARE_CONSOLE_COMMAND(adapter, command_adapter,
NULL,
"Identify AC adapter type",
NULL);
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