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/* Copyright 2016 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.
*/
/* Type-C port manager for Parade PS8751 with integrated superspeed muxes */
#include "common.h"
#include "ps8751.h"
#include "tcpm.h"
#include "timer.h"
#if !defined(CONFIG_USB_PD_TCPM_TCPCI) || \
!defined(CONFIG_USB_PD_TCPM_MUX) || \
!defined(CONFIG_USBC_SS_MUX)
#error "PS8751 is using a standard TCPCI interface with integrated mux control"
#error "Please upgrade your board configuration"
#endif
static int dp_set_hpd(int port, int enable)
{
int reg;
int rv;
rv = tcpc_read(port, PS8751_REG_CTRL_1, ®);
if (rv)
return rv;
if (enable)
reg |= PS8751_REG_CTRL_1_HPD;
else
reg &= ~PS8751_REG_CTRL_1_HPD;
return tcpc_write(port, PS8751_REG_CTRL_1, reg);
}
static int dp_set_irq(int port, int enable)
{
int reg;
int rv;
rv = tcpc_read(port, PS8751_REG_CTRL_1, ®);
if (rv)
return rv;
if (enable)
reg |= PS8751_REG_CTRL_1_IRQ;
else
reg &= ~PS8751_REG_CTRL_1_IRQ;
return tcpc_write(port, PS8751_REG_CTRL_1, reg);
}
void ps8751_tcpc_update_hpd_status(int port, int hpd_lvl, int hpd_irq)
{
dp_set_hpd(port, hpd_lvl);
if (hpd_irq) {
dp_set_irq(port, 0);
msleep(1);
dp_set_irq(port, hpd_irq);
}
}
#ifdef CONFIG_USB_PD_TCPC_FW_VERSION
int ps8751_tcpc_get_fw_version(int port, int *version)
{
return tcpc_read(port, PS8751_REG_VERSION, version);
}
#endif
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