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/* Copyright 2020 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.
*/
#include "i2c.h"
#include "tusb1064.h"
#include "ioexpanders.h"
int init_tusb1064(int port)
{
uint8_t val;
/* Enable the TUSB1064 redriver */
cmux_en(1);
/* Disconnect USB3.1 and DP */
val = tusb1064_read_byte(port, TUSB1064_REG_GENERAL);
if (val < 0)
return EC_ERROR_INVAL;
val &= ~REG_GENERAL_CTLSEL_2DP_AND_USB3;
if (tusb1064_write_byte(port, TUSB1064_REG_GENERAL, val))
return EC_ERROR_INVAL;
return EC_SUCCESS;
}
int tusb1064_write_byte(int port, uint8_t reg, uint8_t val)
{
return i2c_write8(port, TUSB1064_ADDR_FLAGS, reg, val);
}
int tusb1064_read_byte(int port, uint8_t reg)
{
int tmp;
if (i2c_read8(port, TUSB1064_ADDR_FLAGS, reg, &tmp))
return -1;
return tmp;
}
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