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/* Copyright (c) 2014 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 "charge_manager.h"
#include "common.h"
#include "console.h"
#include "gpio.h"
#include "hooks.h"
#include "host_command.h"
#include "registers.h"
#include "task.h"
#include "timer.h"
#include "util.h"
#include "usb_pd.h"
#define CPRINTF(format, args...) cprintf(CC_USBPD, format, ## args)
#define CPRINTS(format, args...) cprints(CC_USBPD, format, ## args)
#define PDO_FIXED_FLAGS (PDO_FIXED_DUAL_ROLE | PDO_FIXED_DATA_SWAP)
const uint32_t pd_src_pdo[] = {
PDO_FIXED(5000, 900, PDO_FIXED_FLAGS),
};
const int pd_src_pdo_cnt = ARRAY_SIZE(pd_src_pdo);
const uint32_t pd_snk_pdo[] = {
PDO_FIXED(5000, 500, PDO_FIXED_FLAGS),
PDO_BATT(4750, 21000, 10000),
PDO_VAR(4750, 21000, 3000),
};
const int pd_snk_pdo_cnt = ARRAY_SIZE(pd_snk_pdo);
void pd_set_input_current_limit(int port, uint32_t max_ma,
uint32_t supply_voltage)
{
struct charge_port_info charge;
charge.current = max_ma;
charge.voltage = supply_voltage;
charge_manager_update_charge(CHARGE_SUPPLIER_PD, port, &charge);
}
void typec_set_input_current_limit(int port, uint32_t max_ma,
uint32_t supply_voltage)
{
struct charge_port_info charge;
charge.current = max_ma;
charge.voltage = supply_voltage;
charge_manager_update_charge(CHARGE_SUPPLIER_TYPEC, port, &charge);
}
int pd_is_valid_input_voltage(int mv)
{
/* Any voltage less than the max is allowed */
return 1;
}
int pd_check_requested_voltage(uint32_t rdo)
{
int max_ma = rdo & 0x3FF;
int op_ma = (rdo >> 10) & 0x3FF;
int idx = rdo >> 28;
uint32_t pdo;
uint32_t pdo_ma;
if (!idx || idx > pd_src_pdo_cnt)
return EC_ERROR_INVAL; /* Invalid index */
/* check current ... */
pdo = pd_src_pdo[idx - 1];
pdo_ma = (pdo & 0x3ff);
if (op_ma > pdo_ma)
return EC_ERROR_INVAL; /* too much op current */
if (max_ma > pdo_ma)
return EC_ERROR_INVAL; /* too much max current */
CPRINTF("Requested %d V %d mA (for %d/%d mA)\n",
((pdo >> 10) & 0x3ff) * 50, (pdo & 0x3ff) * 10,
((rdo >> 10) & 0x3ff) * 10, (rdo & 0x3ff) * 10);
return EC_SUCCESS;
}
void pd_transition_voltage(int idx)
{
/* No-operation: we are always 5V */
}
int pd_set_power_supply_ready(int port)
{
/* provide VBUS */
gpio_set_level(GPIO_USBC_5V_EN, 1);
return EC_SUCCESS; /* we are ready */
}
void pd_power_supply_reset(int port)
{
/* Kill VBUS */
gpio_set_level(GPIO_USBC_5V_EN, 0);
}
int pd_snk_is_vbus_provided(int port)
{
return gpio_get_level(GPIO_CHGR_ACOK);
}
int pd_board_checks(void)
{
return EC_SUCCESS;
}
int pd_check_power_swap(int port)
{
/* TODO: use battery level to decide to accept/reject power swap */
/*
* Allow power swap as long as we are acting as a dual role device,
* otherwise assume our role is fixed (not in S0 or console command
* to fix our role).
*/
return pd_get_dual_role() == PD_DRP_TOGGLE_ON ? 1 : 0;
}
int pd_check_data_swap(int port, int data_role)
{
/* Always allow data swap: we can be DFP or UFP for USB */
return 1;
}
int pd_check_vconn_swap(int port)
{
/*
* VCONN is provided directly by the battery(PPVAR_SYS)
* but use the same rules as power swap
*/
return pd_get_dual_role() == PD_DRP_TOGGLE_ON ? 1 : 0;
}
void pd_execute_data_swap(int port, int data_role)
{
/* inform the host controller to change role */
pd_send_host_event(PD_EVENT_DATA_SWAP);
}
void pd_check_pr_role(int port, int pr_role, int flags)
{
/*
* If partner is dual-role power and dualrole toggling is on, consider
* if a power swap is necessary.
*/
if ((flags & PD_FLAGS_PARTNER_DR_POWER) &&
pd_get_dual_role() == PD_DRP_TOGGLE_ON) {
/*
* If we are source and partner is externally powered,
* swap to become a sink.
*/
if ((flags & PD_FLAGS_PARTNER_EXTPOWER) &&
pr_role == PD_ROLE_SOURCE)
pd_request_power_swap(port);
}
}
void pd_check_dr_role(int port, int dr_role, int flags)
{
/* if the partner is a DRP (e.g. laptop), try to switch to UFP */
if ((flags & PD_FLAGS_PARTNER_DR_DATA) && dr_role == PD_ROLE_DFP)
pd_request_data_swap(port);
}
int pd_custom_vdm(int port, int cnt, uint32_t *payload,
uint32_t **rpayload)
{
return 0;
}
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