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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.
*
* Renesas RAA489000 TCPC driver
*/
#include "common.h"
#include "console.h"
#include "driver/charger/isl923x.h"
#include "i2c.h"
#include "raa489000.h"
#include "tcpci.h"
#include "tcpm.h"
#define CPRINTF(format, args...) cprintf(CC_USBPD, format, ## args)
#define CPRINTS(format, args...) cprints(CC_USBPD, format, ## args)
int raa489000_init(int port)
{
int rv;
int regval;
int i2c_port;
/* Perform unlock sequence */
rv = tcpc_write16(port, 0xAA, 0xDAA0);
if (rv)
CPRINTS("c%d: failed unlock step1", port);
rv = tcpc_write16(port, 0xAA, 0xACE0);
if (rv)
CPRINTS("c%d: failed unlock step2", port);
rv = tcpc_write16(port, 0xAA, 0x0D0B);
if (rv)
CPRINTS("c%d: failed unlock step3", port);
/* Note: registers may not be ready until TCPCI init succeeds */
rv = tcpci_tcpm_init(port);
if (rv)
return rv;
/*
* Set some vendor defined registers to enable the CC comparators and
* remove the dead battery resistors.
*/
rv = tcpc_write16(port, RAA489000_TYPEC_SETTING1,
RAA489000_SETTING1_RDOE | RAA489000_SETTING1_CC2_CMP3_EN |
RAA489000_SETTING1_CC2_CMP2_EN |
RAA489000_SETTING1_CC2_CMP1_EN |
RAA489000_SETTING1_CC1_CMP3_EN |
RAA489000_SETTING1_CC1_CMP2_EN |
RAA489000_SETTING1_CC1_CMP1_EN |
RAA489000_SETTING1_CC_DB_EN);
if (rv)
CPRINTS("c%d: failed to enable CC comparators", port);
/* Enable the ADC */
/*
* TODO(b:147316511) Since this register can be accessed by multiple
* tasks, we should add a mutex when modifying this register.
*/
i2c_port = tcpc_config[port].i2c_info.port;
rv = i2c_read16(i2c_port, ISL923X_ADDR_FLAGS, ISL9238_REG_CONTROL3,
®val);
regval |= RAA489000_ENABLE_ADC;
rv |= i2c_write16(i2c_port, ISL923X_ADDR_FLAGS, ISL9238_REG_CONTROL3,
regval);
if (rv)
CPRINTS("c%d: failed to enable ADCs", port);
/* Enable Vbus detection */
rv = tcpc_write(port, TCPC_REG_COMMAND,
TCPC_REG_COMMAND_ENABLE_VBUS_DETECT);
if (rv)
CPRINTS("c%d: failed to enable vbus detect cmd", port);
/* Set Rx enable for receiver comparator */
rv = tcpc_read16(port, RAA489000_PD_PHYSICAL_SETTING1, ®val);
regval |= RAA489000_PD_PHY_SETTING1_RECEIVER_EN |
RAA489000_PD_PHY_SETTING1_SQUELCH_EN |
RAA489000_PD_PHY_SETTING1_TX_LDO11_EN;
rv |= tcpc_write16(port, RAA489000_PD_PHYSICAL_SETTING1, regval);
if (rv)
CPRINTS("c%d: failed to set PD PHY setting1", port);
/* Enable VBUS auto discharge. needed to goodcrc */
rv = tcpc_read(port, TCPC_REG_POWER_CTRL, ®val);
regval |= TCPC_REG_POWER_CTRL_AUTO_DISCHARGE_DISCONNECT;
rv |= tcpc_write(port, TCPC_REG_POWER_CTRL, regval);
if (rv)
CPRINTS("c%d: failed to set auto discharge", port);
/* The vendor says to set this setting. */
rv = tcpc_write16(port, RAA489000_PD_PHYSICAL_PARAMETER1, 0x6C07);
if (rv)
CPRINTS("c%d: failed to set PD PHY PARAM1", port);
/* Enable the correct TCPCI interface version */
rv = tcpc_read16(port, RAA489000_TCPC_SETTING1, ®val);
if (!(tcpc_config[port].flags & TCPC_FLAGS_TCPCI_REV2_0))
regval |= RAA489000_TCPCV1_0_EN;
else
regval &= ~RAA489000_TCPCV1_0_EN;
/* Allow the TCPC to control VBUS. */
regval |= RAA489000_TCPC_PWR_CNTRL;
rv = tcpc_write16(port, RAA489000_TCPC_SETTING1, regval);
if (rv)
CPRINTS("c%d: failed to set TCPCIv1.0 mode", port);
return rv;
}
int raa489000_tcpm_set_cc(int port, int pull)
{
int rv;
rv = tcpci_tcpm_set_cc(port, pull);
if (rv)
return rv;
/* TCPM should set RDOE to 1 after setting Rp */
if (pull == TYPEC_CC_RP)
rv = tcpc_update16(port, RAA489000_TYPEC_SETTING1,
RAA489000_SETTING1_RDOE, MASK_SET);
return rv;
}
/* RAA489000 is a TCPCI compatible port controller */
const struct tcpm_drv raa489000_tcpm_drv = {
.init = &raa489000_init,
.release = &tcpci_tcpm_release,
.get_cc = &tcpci_tcpm_get_cc,
#ifdef CONFIG_USB_PD_VBUS_DETECT_TCPC
.get_vbus_level = &tcpci_tcpm_get_vbus_level,
#endif
.select_rp_value = &tcpci_tcpm_select_rp_value,
.set_cc = &raa489000_tcpm_set_cc,
.set_polarity = &tcpci_tcpm_set_polarity,
.set_vconn = &tcpci_tcpm_set_vconn,
.set_msg_header = &tcpci_tcpm_set_msg_header,
.set_rx_enable = &tcpci_tcpm_set_rx_enable,
.get_message_raw = &tcpci_tcpm_get_message_raw,
.transmit = &tcpci_tcpm_transmit,
.tcpc_alert = &tcpci_tcpc_alert,
#ifdef CONFIG_USB_PD_DISCHARGE_TCPC
.tcpc_discharge_vbus = &tcpci_tcpc_discharge_vbus,
#endif
#ifdef CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE
.drp_toggle = &tcpci_tcpc_drp_toggle,
#endif
.get_chip_info = &tcpci_get_chip_info,
#ifdef CONFIG_USB_PD_TCPC_LOW_POWER
.enter_low_power_mode = &tcpci_enter_low_power_mode,
#endif
};
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