driver/tcpm/rt1715.c

/* 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.
 */

/* Richtek RT1715 Type-C port controller */

#include "common.h"
#include "rt1715.h"
#include "tcpci.h"
#include "tcpm.h"
#include "timer.h"
#include "usb_pd.h"

#ifndef CONFIG_USB_PD_TCPM_TCPCI
#error "RT1715 is using a standard TCPCI interface"
#error "Please upgrade your board configuration"
#endif

static int rt1715_enable_ext_messages(int port, int enable)
{
	return tcpc_update8(port, RT1715_REG_VENDOR_5,
			    RT1715_REG_VENDOR_5_ENEXTMSG,
			    enable ? MASK_SET : MASK_CLR);
}

static int rt1715_tcpci_tcpm_init(int port)
{
	int rv;

	/* RT1715 has a vendor-defined register reset */
	rv = tcpc_update8(port, RT1715_REG_VENDOR_7,
			  RT1715_REG_VENDOR_7_SOFT_RESET, MASK_SET);
	if (rv)
		return rv;

	msleep(10);
	rv = tcpc_update8(port, RT1715_REG_VENDOR_5,
			  RT1715_REG_VENDOR_5_SHUTDOWN_OFF, MASK_SET);
	if (rv)
		return rv;

	if (IS_ENABLED(CONFIG_USB_PD_REV30))
		rt1715_enable_ext_messages(port, 1);
	return tcpci_tcpm_init(port);
}

const struct tcpm_drv rt1715_tcpm_drv = {
	.init = &rt1715_tcpci_tcpm_init,
	.release = &tcpci_tcpm_release,
	.get_cc = &tcpci_tcpm_get_cc,
#ifdef CONFIG_USB_PD_VBUS_DETECT_TCPC
	.check_vbus_level = &tcpci_tcpm_check_vbus_level,
#endif
	.select_rp_value = &tcpci_tcpm_select_rp_value,
	.set_cc = &tcpci_tcpm_set_cc,
	.set_polarity = &tcpci_tcpm_set_polarity,
#ifdef CONFIG_USB_PD_DECODE_SOP
	.sop_prime_enable	= &tcpci_tcpm_sop_prime_enable,
#endif
	.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
	.tcpc_enable_auto_discharge_disconnect =
		&tcpci_tcpc_enable_auto_discharge_disconnect,
#ifdef CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE
	.drp_toggle = &tcpci_tcpc_drp_toggle,
#endif
#ifdef CONFIG_USBC_PPC
	.set_snk_ctrl = &tcpci_tcpm_set_snk_ctrl,
	.set_src_ctrl = &tcpci_tcpm_set_src_ctrl,
#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
};