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|
/* Copyright 2017 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 "atomic.h"
#include "charge_manager.h"
#include "common.h"
#include "console.h"
#include "gpio.h"
#include "hooks.h"
#include "host_command.h"
#include "i2c.h"
/* Just want the .h file for PS8742 definitions, not the large object file. */
#define CONFIG_USB_MUX_PS8742
#include "ps8740.h"
#undef CONFIG_USB_MUX_PS8742
#include "registers.h"
#include "system.h"
#include "task.h"
#include "tcpm/tcpm.h"
#include "timer.h"
#include "util.h"
#include "usb_common.h"
#include "usb_mux.h"
#include "usb_pd.h"
#include "usb_pd_config.h"
#include "usb_pd_tcpm.h"
#define CPRINTF(format, args...) cprintf(CC_USBPD, format, ## args)
#define CPRINTS(format, args...) cprints(CC_USBPD, format, ## args)
#define DUT_PDO_FIXED_FLAGS (PDO_FIXED_DUAL_ROLE | PDO_FIXED_DATA_SWAP |\
PDO_FIXED_COMM_CAP)
#define CHG_PDO_FIXED_FLAGS (PDO_FIXED_DATA_SWAP)
#define VBUS_UNCHANGED(curr, pend, new) (curr == new && pend == new)
/* Macros to config the PD role */
#define CONF_SET_CLEAR(c, set, clear) ((c | (set)) & ~(clear))
#define CONF_SRC(c) CONF_SET_CLEAR(c, \
CC_DISABLE_DTS | CC_ALLOW_SRC, \
CC_ENABLE_DRP | CC_SNK_WITH_PD)
#define CONF_SNK(c) CONF_SET_CLEAR(c, \
CC_DISABLE_DTS, \
CC_ALLOW_SRC | CC_ENABLE_DRP | CC_SNK_WITH_PD)
#define CONF_PDSNK(c) CONF_SET_CLEAR(c, \
CC_DISABLE_DTS | CC_SNK_WITH_PD, \
CC_ALLOW_SRC | CC_ENABLE_DRP)
#define CONF_DRP(c) CONF_SET_CLEAR(c, \
CC_DISABLE_DTS | CC_ALLOW_SRC | CC_ENABLE_DRP, \
CC_SNK_WITH_PD)
#define CONF_SRCDTS(c) CONF_SET_CLEAR(c, \
CC_ALLOW_SRC, \
CC_ENABLE_DRP | CC_DISABLE_DTS | CC_SNK_WITH_PD)
#define CONF_SNKDTS(c) CONF_SET_CLEAR(c, \
0, \
CC_ALLOW_SRC | CC_ENABLE_DRP | \
CC_DISABLE_DTS | CC_SNK_WITH_PD)
#define CONF_PDSNKDTS(c) CONF_SET_CLEAR(c, \
CC_SNK_WITH_PD, \
CC_ALLOW_SRC | CC_ENABLE_DRP | CC_DISABLE_DTS)
#define CONF_DRPDTS(c) CONF_SET_CLEAR(c, \
CC_ALLOW_SRC | CC_ENABLE_DRP, \
CC_DISABLE_DTS | CC_SNK_WITH_PD)
/* Macros to apply Rd/Rp to CC lines */
#define DUT_ACTIVE_CC_SET(r, flags) \
gpio_set_flags(cc_config & CC_POLARITY ? \
CONCAT2(GPIO_USB_DUT_CC2_, r) : \
CONCAT2(GPIO_USB_DUT_CC1_, r), \
flags)
#define DUT_INACTIVE_CC_SET(r, flags) \
gpio_set_flags(cc_config & CC_POLARITY ? \
CONCAT2(GPIO_USB_DUT_CC1_, r) : \
CONCAT2(GPIO_USB_DUT_CC2_, r), \
flags)
#define DUT_BOTH_CC_SET(r, flags) \
do { \
gpio_set_flags(CONCAT2(GPIO_USB_DUT_CC1_, r), flags); \
gpio_set_flags(CONCAT2(GPIO_USB_DUT_CC2_, r), flags); \
} while (0)
#define DUT_ACTIVE_CC_PU(r) DUT_ACTIVE_CC_SET(r, GPIO_OUT_HIGH)
#define DUT_INACTIVE_CC_PU(r) DUT_INACTIVE_CC_SET(r, GPIO_OUT_HIGH)
#define DUT_ACTIVE_CC_PD(r) DUT_ACTIVE_CC_SET(r, GPIO_OUT_LOW)
#define DUT_BOTH_CC_PD(r) DUT_BOTH_CC_SET(r, GPIO_OUT_LOW)
#define DUT_BOTH_CC_OPEN(r) DUT_BOTH_CC_SET(r, GPIO_INPUT)
/*
* Dynamic PDO that reflects capabilities present on the CHG port. Allow for
* multiple entries so that we can offer greater than 5V charging. The 1st
* entry will be fixed 5V, but its current value may change based on the CHG
* port vbus info. Subsequent entries are used for when offering vbus greater
* than 5V.
*/
static const uint16_t pd_src_voltages_mv[] = {
5000, 9000, 10000, 12000, 15000, 20000,
};
static uint32_t pd_src_chg_pdo[ARRAY_SIZE(pd_src_voltages_mv)];
static uint8_t chg_pdo_cnt;
const uint32_t pd_snk_pdo[] = {
PDO_FIXED(5000, 500, CHG_PDO_FIXED_FLAGS),
PDO_BATT(4750, 21000, 15000),
PDO_VAR(4750, 21000, 3000),
};
const int pd_snk_pdo_cnt = ARRAY_SIZE(pd_snk_pdo);
struct vbus_prop {
int mv;
int ma;
};
static struct vbus_prop vbus[CONFIG_USB_PD_PORT_MAX_COUNT];
static int active_charge_port = CHARGE_PORT_NONE;
static enum charge_supplier active_charge_supplier;
static uint8_t vbus_rp = TYPEC_RP_RESERVED;
static int cc_config = CC_ALLOW_SRC;
/* Voltage thresholds for no connect in DTS mode */
static int pd_src_vnc_dts[TYPEC_RP_RESERVED][2] = {
{PD_SRC_3_0_VNC_MV, PD_SRC_1_5_VNC_MV},
{PD_SRC_1_5_VNC_MV, PD_SRC_DEF_VNC_MV},
{PD_SRC_3_0_VNC_MV, PD_SRC_DEF_VNC_MV},
};
/* Voltage thresholds for Ra attach in DTS mode */
static int pd_src_rd_threshold_dts[TYPEC_RP_RESERVED][2] = {
{PD_SRC_3_0_RD_THRESH_MV, PD_SRC_1_5_RD_THRESH_MV},
{PD_SRC_1_5_RD_THRESH_MV, PD_SRC_DEF_RD_THRESH_MV},
{PD_SRC_3_0_RD_THRESH_MV, PD_SRC_DEF_RD_THRESH_MV},
};
/* Voltage thresholds for no connect in normal SRC mode */
static int pd_src_vnc[TYPEC_RP_RESERVED] = {
PD_SRC_DEF_VNC_MV,
PD_SRC_1_5_VNC_MV,
PD_SRC_3_0_VNC_MV,
};
/* Voltage thresholds for Ra attach in normal SRC mode */
static int pd_src_rd_threshold[TYPEC_RP_RESERVED] = {
PD_SRC_DEF_RD_THRESH_MV,
PD_SRC_1_5_RD_THRESH_MV,
PD_SRC_3_0_RD_THRESH_MV,
};
/* Saved value for the duration of faking PD disconnect */
static int fake_pd_disconnect_duration_us;
/* Shadow what would be in TCPC register state. */
static int rp_value_stored = TYPEC_RP_USB;
static int cc_pull_stored = TYPEC_CC_RD;
/*
* Set the USB PD max voltage to value appropriate for the board version.
* The red/blue versions of servo_v4 have an ESD between VBUS and CC1/CC2
* that has a breakdown voltage of 11V.
*/
#define MAX_MV_RED_BLUE 9000
static int user_limited_max_mv = 20000;
static uint8_t allow_pr_swap = 1;
static uint8_t allow_dr_swap = 1;
static uint32_t max_supported_voltage(void)
{
int board_max_mv = board_get_version() >= BOARD_VERSION_BLACK ?
PD_MAX_VOLTAGE_MV : MAX_MV_RED_BLUE;
return board_max_mv < user_limited_max_mv ? board_max_mv :
user_limited_max_mv;
}
static int charge_port_is_active(void)
{
return active_charge_port == CHG && vbus[CHG].mv > 0;
}
static int is_charge_through_allowed(void)
{
return charge_port_is_active() && cc_config & CC_ALLOW_SRC;
}
static int get_dual_role_of_src(void)
{
return cc_config & CC_ENABLE_DRP ? PD_DRP_TOGGLE_ON :
PD_DRP_FORCE_SOURCE;
}
static void dut_allow_charge(void)
{
/*
* Update to charge enable if charger still present and not
* already charging.
*/
if (is_charge_through_allowed() &&
pd_get_dual_role(DUT) != PD_DRP_FORCE_SOURCE &&
pd_get_dual_role(DUT) != PD_DRP_TOGGLE_ON) {
CPRINTS("Enable DUT charge through");
pd_set_dual_role(DUT, get_dual_role_of_src());
/*
* If DRP role, don't set any CC pull resistor, the PD
* state machine will toggle and set the pull resistors
* when needed.
*/
if (!(cc_config & CC_ENABLE_DRP))
pd_set_host_mode(DUT, 1);
/*
* Enable PD comm. The PD comm may be disabled during
* the power charge-through was detached.
*/
pd_comm_enable(DUT, 1);
pd_update_contract(DUT);
}
}
DECLARE_DEFERRED(dut_allow_charge);
static void board_manage_dut_port(void)
{
enum pd_dual_role_states allowed_role;
enum pd_dual_role_states current_role;
/*
* This function is called by the CHG port whenever there has been a
* change in its vbus voltage or current. That change may necessitate
* that the DUT port present a different Rp value or renogiate its PD
* contract if it is connected.
*/
/* Assume the default value of Rd */
allowed_role = PD_DRP_FORCE_SINK;
/* If VBUS charge through is available, mark as such. */
if (is_charge_through_allowed())
allowed_role = get_dual_role_of_src();
current_role = pd_get_dual_role(DUT);
if (current_role != allowed_role) {
/* Update role. */
if (allowed_role == PD_DRP_FORCE_SINK) {
/* We've lost charge through. Disable VBUS. */
gpio_set_level(GPIO_DUT_CHG_EN, 0);
/* Mark as SNK only. */
pd_set_dual_role(DUT, PD_DRP_FORCE_SINK);
pd_set_host_mode(DUT, 0);
/*
* Disable PD comm. It matches the user expectation that
* unplugging the power charge-through makes servo v4 as
* a passive hub, without any PD support.
*
* There is an exception that servo v4 is explicitly set
* to have PD, like the "pnsnk" mode.
*/
pd_comm_enable(DUT, cc_config & CC_SNK_WITH_PD ? 1 : 0);
} else {
/* Allow charge through after PD negotiate. */
hook_call_deferred(&dut_allow_charge_data, 2000 * MSEC);
}
}
/*
* Update PD contract to reflect new available CHG
* voltage/current values.
*/
pd_update_contract(DUT);
}
static void update_ports(void)
{
int pdo_index, src_index, snk_index, i;
uint32_t pdo, max_ma, max_mv, unused;
/*
* CHG Vbus has changed states, update PDO that reflects CHG port
* state
*/
if (!charge_port_is_active()) {
/* CHG Vbus has dropped, so become SNK. */
chg_pdo_cnt = 0;
} else {
/* Advertise the 'best' PDOs at various discrete voltages */
if (active_charge_supplier == CHARGE_SUPPLIER_PD) {
src_index = 0;
snk_index = -1;
for (i = 0; i < ARRAY_SIZE(pd_src_voltages_mv); ++i) {
/* Adhere to board voltage limits */
if (pd_src_voltages_mv[i] >
max_supported_voltage())
break;
/* Find the 'best' PDO <= voltage */
pdo_index =
pd_find_pdo_index(pd_get_src_cap_cnt(CHG),
pd_get_src_caps(CHG),
pd_src_voltages_mv[i], &pdo);
/* Don't duplicate PDOs */
if (pdo_index == snk_index)
continue;
/* Skip battery / variable PDOs */
if ((pdo & PDO_TYPE_MASK) != PDO_TYPE_FIXED)
continue;
snk_index = pdo_index;
pd_extract_pdo_power(pdo, &max_ma, &max_mv,
&unused);
pd_src_chg_pdo[src_index++] =
PDO_FIXED_VOLT(max_mv) |
PDO_FIXED_CURR(max_ma) |
DUT_PDO_FIXED_FLAGS |
PDO_FIXED_UNCONSTRAINED;
}
chg_pdo_cnt = src_index;
} else {
/* 5V PDO */
pd_src_chg_pdo[0] = PDO_FIXED_VOLT(PD_MIN_MV) |
PDO_FIXED_CURR(vbus[CHG].ma) |
DUT_PDO_FIXED_FLAGS |
PDO_FIXED_UNCONSTRAINED;
chg_pdo_cnt = 1;
}
}
/* Call DUT port manager to update Rp and possible PD contract */
board_manage_dut_port();
}
int board_set_active_charge_port(int charge_port)
{
if (charge_port == DUT)
return -1;
active_charge_port = charge_port;
update_ports();
if (!charge_port_is_active())
/* Don't negotiate > 5V, except in lockstep with DUT */
pd_set_external_voltage_limit(CHG, PD_MIN_MV);
return 0;
}
void board_set_charge_limit(int port, int supplier, int charge_ma,
int max_ma, int charge_mv)
{
if (port != CHG)
return;
active_charge_supplier = supplier;
/* Update the voltage/current values for CHG port */
vbus[CHG].ma = charge_ma;
vbus[CHG].mv = charge_mv;
update_ports();
}
__override uint8_t board_get_src_dts_polarity(int port)
{
/*
* When servo configured as srcdts, the CC polarity is based
* on the flags.
*/
if (port == DUT)
return !!(cc_config & CC_POLARITY);
return 0;
}
int pd_tcpc_cc_nc(int port, int cc_volt, int cc_sel)
{
int rp_index;
int nc;
/* Can never be called from CHG port as it's sink only */
if (port == CHG)
return 0;
rp_index = vbus_rp;
/*
* If rp_index > 2, then always return not connected. This case should
* only happen when all Rp GPIO controls are tri-stated.
*/
if (rp_index >= TYPEC_RP_RESERVED)
return 1;
/* Select the correct voltage threshold for current Rp and DTS mode */
if (cc_config & CC_DISABLE_DTS)
nc = cc_volt >= pd_src_vnc[rp_index];
else
nc = cc_volt >= pd_src_vnc_dts[rp_index][
cc_config & CC_POLARITY ? !cc_sel : cc_sel];
return nc;
}
int pd_tcpc_cc_ra(int port, int cc_volt, int cc_sel)
{
int rp_index;
int ra;
/* Can never be called from CHG port as it's sink only */
if (port == CHG)
return 0;
rp_index = vbus_rp;
/*
* If rp_index > 2, then can't be Ra. This case should
* only happen when all Rp GPIO controls are tri-stated.
*/
if (rp_index >= TYPEC_RP_RESERVED)
return 0;
/* Select the correct voltage threshold for current Rp and DTS mode */
if (cc_config & CC_DISABLE_DTS)
ra = cc_volt < pd_src_rd_threshold[rp_index];
else
ra = cc_volt < pd_src_rd_threshold_dts[rp_index][
cc_config & CC_POLARITY ? !cc_sel : cc_sel];
return ra;
}
/* DUT CC readings aren't valid if we aren't applying CC pulls */
bool cc_is_valid(void)
{
if ((cc_config & CC_DETACH) || (cc_pull_stored == TYPEC_CC_OPEN) ||
((cc_pull_stored == TYPEC_CC_RP) &&
(rp_value_stored == TYPEC_RP_RESERVED)))
return false;
return true;
}
int pd_adc_read(int port, int cc)
{
int mv;
if (port == 0)
mv = adc_read_channel(cc ? ADC_CHG_CC2_PD : ADC_CHG_CC1_PD);
else if (cc_is_valid()) {
/*
* In servo v4 hardware logic, both CC lines are wired directly
* to DUT. When servo v4 as a snk, DUT may source Vconn to CC2
* (CC1 if polarity flip) and make the voltage high as vRd-3.0,
* which makes the PD state mess up. As the PD state machine
* doesn't handle this case. It assumes that CC2 (CC1 if
* polarity flip) is separated by a Type-C cable, resulting a
* voltage lower than the max of vRa.
*
* It fakes the voltage within vRa.
*/
if ((cc_config & CC_DISABLE_DTS) &&
cc_pull_stored == TYPEC_CC_RD && port == DUT &&
cc == (cc_config & CC_POLARITY ? 0 : 1))
mv = 0;
else
mv = adc_read_channel(cc ? ADC_DUT_CC2_PD :
ADC_DUT_CC1_PD);
} else {
/*
* When emulating detach, fake the voltage on CC to 0 to avoid
* triggering some debounce logic.
*
* The servo v4 makes Rd/Rp open but the DUT may present Rd/Rp
* alternatively that makes the voltage on CC falls into some
* unexpected range and triggers the PD state machine switching
* between SNK_DISCONNECTED and SNK_DISCONNECTED_DEBOUNCE.
*/
mv = 0;
}
return mv;
}
static int board_set_rp(int rp)
{
if (cc_config & CC_DISABLE_DTS) {
/*
* DTS mode is disabled, so only present the requested Rp value
* on CC1 (active) and leave all Rp/Rd resistors on CC2
* (inactive) disconnected.
*/
switch (rp) {
case TYPEC_RP_USB:
DUT_ACTIVE_CC_PU(RPUSB);
break;
case TYPEC_RP_1A5:
DUT_ACTIVE_CC_PU(RP1A5);
break;
case TYPEC_RP_3A0:
DUT_ACTIVE_CC_PU(RP3A0);
break;
case TYPEC_RP_RESERVED:
/*
* This case can be used to force a detach event since
* all values are set to inputs above. Nothing else to
* set.
*/
break;
default:
return EC_ERROR_INVAL;
}
} else {
/* DTS mode is enabled. The rp parameter is used to select the
* Type C current limit to advertise. The combinations of Rp on
* each CC line is shown in the table below.
*
* CC values for Debug sources (DTS)
*
* Source type Mode of Operation CC1 CC2
* ---------------------------------------------
* DTS Default USB Power Rp3A0 Rp1A5
* DTS USB-C @ 1.5 A Rp1A5 RpUSB
* DTS USB-C @ 3 A Rp3A0 RpUSB
*/
switch (rp) {
case TYPEC_RP_USB:
DUT_ACTIVE_CC_PU(RP3A0);
DUT_INACTIVE_CC_PU(RP1A5);
break;
case TYPEC_RP_1A5:
DUT_ACTIVE_CC_PU(RP1A5);
DUT_INACTIVE_CC_PU(RPUSB);
break;
case TYPEC_RP_3A0:
DUT_ACTIVE_CC_PU(RP3A0);
DUT_INACTIVE_CC_PU(RPUSB);
break;
case TYPEC_RP_RESERVED:
/*
* This case can be used to force a detach event since
* all values are set to inputs above. Nothing else to
* set.
*/
break;
default:
return EC_ERROR_INVAL;
}
}
/* Save new Rp value for DUT port */
vbus_rp = rp;
return EC_SUCCESS;
}
int pd_set_rp_rd(int port, int cc_pull, int rp_value)
{
int rv = EC_SUCCESS;
if (port != 1)
return EC_ERROR_UNIMPLEMENTED;
/* CC is disabled for emulating detach. Don't change Rd/Rp. */
if (cc_config & CC_DETACH)
return EC_SUCCESS;
/* By default disconnect all Rp/Rd resistors from both CC lines */
/* Set Rd for CC1/CC2 to High-Z. */
DUT_BOTH_CC_OPEN(RD);
/* Set Rp for CC1/CC2 to High-Z. */
DUT_BOTH_CC_OPEN(RP3A0);
DUT_BOTH_CC_OPEN(RP1A5);
DUT_BOTH_CC_OPEN(RPUSB);
/* Set TX Hi-Z */
DUT_BOTH_CC_OPEN(TX_DATA);
if (cc_pull == TYPEC_CC_RP) {
rv = board_set_rp(rp_value);
} else if (cc_pull == TYPEC_CC_RD) {
/*
* The DUT port uses a captive cable. It can present Rd on both
* CC1 and CC2. If DTS mode is enabled, then present Rd on both
* CC lines. However, if DTS mode is disabled only present Rd on
* CC1 (active).
*/
if (cc_config & CC_DISABLE_DTS)
DUT_ACTIVE_CC_PD(RD);
else
DUT_BOTH_CC_PD(RD);
}
rp_value_stored = rp_value;
cc_pull_stored = cc_pull;
return rv;
}
int board_select_rp_value(int port, int rp)
{
if (port != 1)
return EC_ERROR_UNIMPLEMENTED;
/*
* Update Rp value to indicate non-pd power available.
* Do not change pull direction though.
*/
if ((rp != rp_value_stored) && (cc_pull_stored == TYPEC_CC_RP)) {
rp_value_stored = rp;
return pd_set_rp_rd(port, TYPEC_CC_RP, rp);
}
return EC_SUCCESS;
}
int charge_manager_get_source_pdo(const uint32_t **src_pdo, const int port)
{
int pdo_cnt = 0;
/*
* If CHG is providing VBUS, then advertise what's available on the CHG
* port, otherwise we provide no power.
*/
if (charge_port_is_active()) {
*src_pdo = pd_src_chg_pdo;
pdo_cnt = chg_pdo_cnt;
}
return pdo_cnt;
}
__override void pd_transition_voltage(int idx)
{
timestamp_t deadline;
uint32_t ma, mv, unused;
pd_extract_pdo_power(pd_src_chg_pdo[idx - 1], &ma, &mv, &unused);
/* Is this a transition to a new voltage? */
if (charge_port_is_active() && vbus[CHG].mv != mv) {
/*
* Alter voltage limit on charge port, this should cause
* the port to select the desired PDO.
*/
pd_set_external_voltage_limit(CHG, mv);
/* Wait for CHG transition */
deadline.val = get_time().val + PD_T_PS_TRANSITION;
CPRINTS("Waiting for CHG port transition");
while (charge_port_is_active() &&
vbus[CHG].mv != mv &&
get_time().val < deadline.val)
msleep(10);
if (vbus[CHG].mv != mv) {
CPRINTS("Missed CHG transition, resetting DUT");
pd_power_supply_reset(DUT);
return;
}
CPRINTS("CHG transitioned");
}
vbus[DUT].mv = vbus[CHG].mv;
vbus[DUT].ma = vbus[CHG].ma;
}
int pd_set_power_supply_ready(int port)
{
/* Port 0 can never provide vbus. */
if (port == CHG)
return EC_ERROR_INVAL;
if (charge_port_is_active()) {
/* Enable VBUS */
gpio_set_level(GPIO_DUT_CHG_EN, 1);
if (vbus[CHG].mv != PD_MIN_MV)
CPRINTS("ERROR, CHG port voltage %d != PD_MIN_MV",
vbus[CHG].mv);
vbus[DUT].mv = vbus[CHG].mv;
vbus[DUT].ma = vbus[CHG].mv;
pd_set_dual_role(DUT, get_dual_role_of_src());
} else {
vbus[DUT].mv = 0;
vbus[DUT].ma = 0;
gpio_set_level(GPIO_DUT_CHG_EN, 0);
pd_set_dual_role(DUT, PD_DRP_FORCE_SINK);
return EC_ERROR_NOT_POWERED;
}
return EC_SUCCESS; /* we are ready */
}
void pd_power_supply_reset(int port)
{
/* Port 0 can never provide vbus. */
if (port == CHG)
return;
/* Disable VBUS */
gpio_set_level(GPIO_DUT_CHG_EN, 0);
/* DUT is lost, back to 5V limit on CHG */
pd_set_external_voltage_limit(CHG, PD_MIN_MV);
}
int pd_snk_is_vbus_provided(int port)
{
return gpio_get_level(port ? GPIO_USB_DET_PP_DUT :
GPIO_USB_DET_PP_CHG);
}
__override int pd_check_power_swap(int port)
{
/*
* When only host VBUS is available, then servo_v4 is not setting
* PDO_FIXED_UNCONSTRAINED in the src_pdo sent to the DUT. When this bit
* is not set, the DUT will always attempt to swap its power role to
* SRC. Let servo_v4 have more control over its power role by always
* rejecting power swap requests from the DUT.
*/
/* Port 0 can never provide vbus. */
if (port == CHG)
return 0;
if (pd_get_power_role(port) == PD_ROLE_SINK && !(cc_config & CC_ALLOW_SRC))
return 0;
if (pd_snk_is_vbus_provided(CHG))
return allow_pr_swap;
return 0;
}
__override int pd_check_data_swap(int port,
enum pd_data_role data_role)
{
/*
* Servo should allow data role swaps to let DUT see the USB hub, but
* doing it on CHG port is a waste as its data lines is unconnected.
*/
if (port == CHG)
return 0;
return allow_dr_swap;
}
__override void pd_execute_data_swap(int port,
enum pd_data_role data_role)
{
/*
* TODO(b/137887386): Turn on the fastboot/DFU path when data swap to
* DFP?
*/
}
__override void pd_check_pr_role(int port,
enum pd_power_role pr_role,
int flags)
{
/*
* Don't define any policy to initiate power role swap.
*
* CHG port is SNK only. DUT port requires a user to switch its
* role by commands. So don't do anything implicitly.
*/
}
__override void pd_check_dr_role(int port,
enum pd_data_role dr_role,
int flags)
{
if (port == CHG)
return;
/* If DFP, try to switch to UFP, to let DUT see the USB hub. */
if ((flags & PD_FLAGS_PARTNER_DR_DATA) && dr_role == PD_ROLE_DFP)
pd_request_data_swap(port);
}
/* ----------------- Vendor Defined Messages ------------------ */
/*
* DP alt-mode config, user configurable.
* Default is the mode disabled, supporting the C and D pin assignment,
* multi-function preferred, and a plug.
*/
static int alt_dp_config = (ALT_DP_PIN_C | ALT_DP_PIN_D | ALT_DP_MF_PREF |
ALT_DP_PLUG);
/**
* Get the pins based on the user config.
*/
static int alt_dp_config_pins(void)
{
int pins = 0;
if (alt_dp_config & ALT_DP_PIN_C)
pins |= MODE_DP_PIN_C;
if (alt_dp_config & ALT_DP_PIN_D)
pins |= MODE_DP_PIN_D;
if (alt_dp_config & ALT_DP_PIN_E)
pins |= MODE_DP_PIN_E;
return pins;
}
/**
* Get the cable outlet value (plug or receptacle) based on the user config.
*/
static int alt_dp_config_cable(void)
{
return (alt_dp_config & ALT_DP_PLUG) ? CABLE_PLUG : CABLE_RECEPTACLE;
}
const uint32_t vdo_idh = VDO_IDH(0, /* data caps as USB host */
1, /* data caps as USB device */
IDH_PTYPE_AMA, /* Alternate mode */
1, /* supports alt modes */
USB_VID_GOOGLE);
const uint32_t vdo_product = VDO_PRODUCT(CONFIG_USB_PID, CONFIG_USB_BCD_DEV);
const uint32_t vdo_ama = VDO_AMA(CONFIG_USB_PD_IDENTITY_HW_VERS,
CONFIG_USB_PD_IDENTITY_SW_VERS,
0, 0, 0, 0, /* SS[TR][12] */
0, /* Vconn power */
0, /* Vconn power required */
0, /* Vbus power required */
AMA_USBSS_U31_GEN1 /* USB SS support */);
static int svdm_response_identity(int port, uint32_t *payload)
{
int dp_supported = (alt_dp_config & ALT_DP_ENABLE) != 0;
if (dp_supported) {
payload[VDO_I(IDH)] = vdo_idh;
payload[VDO_I(CSTAT)] = VDO_CSTAT(0);
payload[VDO_I(PRODUCT)] = vdo_product;
payload[VDO_I(AMA)] = vdo_ama;
return VDO_I(AMA) + 1;
} else {
return 0;
}
}
static int svdm_response_svids(int port, uint32_t *payload)
{
payload[1] = VDO_SVID(USB_SID_DISPLAYPORT, 0);
return 2;
}
#define MODE_CNT 1
#define OPOS 1
/*
* The Type-C demux PS8742 supports pin assignment C, D, and E. Response the DP
* capabilities with supporting all of them.
*/
uint32_t vdo_dp_mode[MODE_CNT];
static int svdm_response_modes(int port, uint32_t *payload)
{
vdo_dp_mode[0] =
VDO_MODE_DP(0, /* UFP pin cfg supported: none */
alt_dp_config_pins(), /* DFP pin */
1, /* no usb2.0 signalling in AMode */
alt_dp_config_cable(), /* plug or receptacle */
MODE_DP_V13, /* DPv1.3 Support, no Gen2 */
MODE_DP_SNK); /* Its a sink only */
/* CCD uses the SBU lines; don't enable DP when dts-mode enabled */
if (!(cc_config & CC_DISABLE_DTS))
return 0; /* NAK */
if (PD_VDO_VID(payload[0]) != USB_SID_DISPLAYPORT)
return 0; /* NAK */
memcpy(payload + 1, vdo_dp_mode, sizeof(vdo_dp_mode));
return MODE_CNT + 1;
}
static int is_typec_dp_muxed(void)
{
int value;
i2c_read8(I2C_PORT_MASTER, PS8740_I2C_ADDR0_FLAG, PS8740_REG_MODE,
&value);
return value & PS8740_MODE_DP_ENABLED ? 1 : 0;
}
static void set_typec_mux(int pin_cfg)
{
int value;
switch (pin_cfg) {
case 0:
value = 0;
CPRINTS("PinCfg:off");
break;
case MODE_DP_PIN_C:
value = PS8740_MODE_DP_ENABLED;
CPRINTS("PinCfg:C");
break;
case MODE_DP_PIN_D:
value = PS8740_MODE_DP_ENABLED | PS8740_MODE_USB_ENABLED;
CPRINTS("PinCfg:D");
break;
case MODE_DP_PIN_E:
value = PS8740_MODE_DP_ENABLED | PS8740_MODE_CE_DP_ENABLED;
CPRINTS("PinCfg:E");
break;
default:
CPRINTS("PinCfg not supported: %d", pin_cfg);
return;
}
if (value && cc_config & CC_POLARITY)
value |= PS8740_MODE_POLARITY_INVERTED;
i2c_write8(I2C_PORT_MASTER, PS8740_I2C_ADDR0_FLAG, PS8740_REG_MODE,
value);
}
static int get_hpd_level(void)
{
if (alt_dp_config & ALT_DP_OVERRIDE_HPD)
return (alt_dp_config & ALT_DP_HPD_LVL) != 0;
else
return gpio_get_level(GPIO_DP_HPD);
}
static int dp_status(int port, uint32_t *payload)
{
int opos = PD_VDO_OPOS(payload[0]);
int hpd = get_hpd_level();
if (opos != OPOS)
return 0; /* NAK */
payload[1] = VDO_DP_STATUS(
0, /* IRQ_HPD */
hpd, /* HPD_HI|LOW */
0, /* request exit DP */
0, /* request exit USB */
(alt_dp_config & ALT_DP_MF_PREF) != 0, /* MF pref */
is_typec_dp_muxed(),
0, /* power low */
hpd ? 0x2 : 0);
return 2;
}
static int dp_config(int port, uint32_t *payload)
{
if (PD_DP_CFG_DPON(payload[1]))
set_typec_mux(PD_DP_CFG_PIN(payload[1]));
return 1;
}
/* Whether alternate mode has been entered or not */
static int alt_mode;
static int svdm_enter_mode(int port, uint32_t *payload)
{
/* SID & mode request is valid */
if ((PD_VDO_VID(payload[0]) != USB_SID_DISPLAYPORT) ||
(PD_VDO_OPOS(payload[0]) != OPOS))
return 0; /* NAK */
alt_mode = OPOS;
return 1;
}
int pd_alt_mode(int port, enum tcpm_transmit_type type, uint16_t svid)
{
if (type == TCPC_TX_SOP && svid == USB_SID_DISPLAYPORT)
return alt_mode;
return 0;
}
static int svdm_exit_mode(int port, uint32_t *payload)
{
if (PD_VDO_VID(payload[0]) == USB_SID_DISPLAYPORT)
set_typec_mux(0);
alt_mode = 0;
return 1; /* Must return ACK */
}
static struct amode_fx dp_fx = {
.status = &dp_status,
.config = &dp_config,
};
const struct svdm_response svdm_rsp = {
.identity = &svdm_response_identity,
.svids = &svdm_response_svids,
.modes = &svdm_response_modes,
.enter_mode = &svdm_enter_mode,
.amode = &dp_fx,
.exit_mode = &svdm_exit_mode,
};
__override int pd_custom_vdm(int port, int cnt, uint32_t *payload,
uint32_t **rpayload)
{
int cmd = PD_VDO_CMD(payload[0]);
/* make sure we have some payload */
if (cnt == 0)
return 0;
switch (cmd) {
case VDO_CMD_VERSION:
/* guarantee last byte of payload is null character */
*(payload + cnt - 1) = 0;
CPRINTF("ver: %s\n", (char *)(payload+1));
break;
case VDO_CMD_CURRENT:
CPRINTF("Current: %dmA\n", payload[1]);
break;
}
return 0;
}
__override const struct svdm_amode_fx supported_modes[] = {};
__override const int supported_modes_cnt = ARRAY_SIZE(supported_modes);
static void print_cc_mode(void)
{
/* Get current CCD status */
ccprintf("cc: %s\n", cc_config & CC_DETACH ? "off" : "on");
ccprintf("dts mode: %s\n", cc_config & CC_DISABLE_DTS ? "off" : "on");
ccprintf("chg mode: %s\n",
gpio_get_level(GPIO_DUT_CHG_EN) ? "on" : "off");
ccprintf("chg allowed: %s\n", cc_config & CC_ALLOW_SRC ? "on" : "off");
ccprintf("drp enabled: %s\n", cc_config & CC_ENABLE_DRP ? "on" : "off");
ccprintf("cc polarity: %s\n", cc_config & CC_POLARITY ? "cc2" :
"cc1");
ccprintf("pd enabled: %s\n", pd_comm_is_enabled(DUT) ? "on" : "off");
}
static void do_cc(int cc_config_new)
{
int chargeable;
int dualrole;
if (cc_config_new != cc_config) {
if (!(cc_config & CC_DETACH)) {
/* Force detach */
gpio_set_level(GPIO_DUT_CHG_EN, 0);
/* Always set to 0 here so both CC lines are changed */
cc_config &= ~(CC_DISABLE_DTS & CC_ALLOW_SRC);
/* Remove Rp/Rd on both CC lines */
pd_comm_enable(DUT, 0);
pd_set_rp_rd(DUT, TYPEC_CC_RP, TYPEC_RP_RESERVED);
/*
* If just changing mode (cc keeps enabled), give some
* time for DUT to detach, use tErrorRecovery.
*/
if (!(cc_config_new & CC_DETACH))
usleep(PD_T_ERROR_RECOVERY);
}
if ((cc_config & ~cc_config_new) & CC_DISABLE_DTS) {
/* DTS-disabled -> DTS-enabled */
ccd_enable(1);
ext_hpd_detection_enable(0);
} else if ((cc_config_new & ~cc_config) & CC_DISABLE_DTS) {
/* DTS-enabled -> DTS-disabled */
ccd_enable(0);
if (!(alt_dp_config & ALT_DP_OVERRIDE_HPD))
ext_hpd_detection_enable(1);
}
/* Accept new cc_config value */
cc_config = cc_config_new;
if (!(cc_config & CC_DETACH)) {
/* Can we source? */
chargeable = is_charge_through_allowed();
dualrole = chargeable ? get_dual_role_of_src() :
PD_DRP_FORCE_SINK;
pd_set_dual_role(DUT, dualrole);
/*
* If force_source or force_sink role, explicitly set
* the Rp or Rd resistors on CC lines.
*
* If DRP role, don't set any CC pull resistor, the PD
* state machine will toggle and set the pull resistors
* when needed.
*/
if (dualrole != PD_DRP_TOGGLE_ON)
pd_set_host_mode(DUT, chargeable);
/*
* For the normal lab use, emulating a sink has no PD
* comm, like a passive hub. For the PD FAFT use, we
* need to validate some PD behavior, so a flag
* CC_SNK_WITH_PD to force enabling PD comm.
*/
if (cc_config & CC_SNK_WITH_PD)
pd_comm_enable(DUT, 1);
else
pd_comm_enable(DUT, chargeable);
}
}
}
static int command_cc(int argc, char **argv)
{
int cc_config_new = cc_config;
if (argc < 2) {
print_cc_mode();
return EC_SUCCESS;
}
if (!strcasecmp(argv[1], "off")) {
cc_config_new |= CC_DETACH;
} else if (!strcasecmp(argv[1], "on")) {
cc_config_new &= ~CC_DETACH;
} else {
cc_config_new &= ~CC_DETACH;
if (!strcasecmp(argv[1], "src"))
cc_config_new = CONF_SRC(cc_config_new);
else if (!strcasecmp(argv[1], "snk"))
cc_config_new = CONF_SNK(cc_config_new);
else if (!strcasecmp(argv[1], "pdsnk"))
cc_config_new = CONF_PDSNK(cc_config_new);
else if (!strcasecmp(argv[1], "drp"))
cc_config_new = CONF_DRP(cc_config_new);
else if (!strcasecmp(argv[1], "srcdts"))
cc_config_new = CONF_SRCDTS(cc_config_new);
else if (!strcasecmp(argv[1], "snkdts"))
cc_config_new = CONF_SNKDTS(cc_config_new);
else if (!strcasecmp(argv[1], "pdsnkdts"))
cc_config_new = CONF_PDSNKDTS(cc_config_new);
else if (!strcasecmp(argv[1], "drpdts"))
cc_config_new = CONF_DRPDTS(cc_config_new);
else
return EC_ERROR_PARAM2;
}
if (!strcasecmp(argv[2], "cc1"))
cc_config_new &= ~CC_POLARITY;
else if (!strcasecmp(argv[2], "cc2"))
cc_config_new |= CC_POLARITY;
else if (argc >= 3)
return EC_ERROR_PARAM3;
do_cc(cc_config_new);
print_cc_mode();
return EC_SUCCESS;
}
DECLARE_CONSOLE_COMMAND(cc, command_cc,
"[off|on|src|snk|pdsnk|drp|srcdts|snkdts|pdsnkdts|"
"drpdts] [cc1|cc2]",
"Servo_v4 DTS and CHG mode");
static void fake_disconnect_end(void)
{
/* Reenable CC lines with previous dts and src modes */
do_cc(cc_config & ~CC_DETACH);
}
DECLARE_DEFERRED(fake_disconnect_end);
static void fake_disconnect_start(void)
{
/* Disable CC lines */
do_cc(cc_config | CC_DETACH);
hook_call_deferred(&fake_disconnect_end_data,
fake_pd_disconnect_duration_us);
}
DECLARE_DEFERRED(fake_disconnect_start);
static int cmd_fake_disconnect(int argc, char *argv[])
{
int delay_ms, duration_ms;
char *e;
if (argc < 3)
return EC_ERROR_PARAM_COUNT;
delay_ms = strtoi(argv[1], &e, 0);
if (*e || delay_ms < 0)
return EC_ERROR_PARAM1;
duration_ms = strtoi(argv[2], &e, 0);
if (*e || duration_ms < 0)
return EC_ERROR_PARAM2;
/* Cancel any pending function calls */
hook_call_deferred(&fake_disconnect_start_data, -1);
hook_call_deferred(&fake_disconnect_end_data, -1);
fake_pd_disconnect_duration_us = duration_ms * MSEC;
hook_call_deferred(&fake_disconnect_start_data, delay_ms * MSEC);
ccprintf("Fake disconnect for %d ms starting in %d ms.\n",
duration_ms, delay_ms);
return EC_SUCCESS;
}
DECLARE_CONSOLE_COMMAND(fakedisconnect, cmd_fake_disconnect,
"<delay_ms> <duration_ms>", NULL);
static int cmd_ada_srccaps(int argc, char *argv[])
{
int i;
const uint32_t * const ada_srccaps = pd_get_src_caps(CHG);
for (i = 0; i < pd_get_src_cap_cnt(CHG); ++i) {
uint32_t max_ma, max_mv, unused;
if (IS_ENABLED(CONFIG_USB_PD_ONLY_FIXED_PDOS) &&
(ada_srccaps[i] & PDO_TYPE_MASK) != PDO_TYPE_FIXED)
continue;
pd_extract_pdo_power(ada_srccaps[i], &max_ma, &max_mv, &unused);
ccprintf("%d: %dmV/%dmA\n", i, max_mv, max_ma);
}
return EC_SUCCESS;
}
DECLARE_CONSOLE_COMMAND(ada_srccaps, cmd_ada_srccaps,
"",
"Print adapter SrcCap");
static int cmd_dp_action(int argc, char *argv[])
{
int i;
char *e;
if (argc < 1)
return EC_ERROR_PARAM_COUNT;
if (argc == 1) {
CPRINTS("DP alt-mode: %s",
(alt_dp_config & ALT_DP_ENABLE) ? "enable" : "disable");
}
if (!strcasecmp(argv[1], "enable")) {
alt_dp_config |= ALT_DP_ENABLE;
} else if (!strcasecmp(argv[1], "disable")) {
alt_dp_config &= ~ALT_DP_ENABLE;
} else if (!strcasecmp(argv[1], "pins")) {
if (argc >= 3) {
alt_dp_config &= ~(ALT_DP_PIN_C | ALT_DP_PIN_D |
ALT_DP_PIN_E);
for (i = 0; i < 3; i++) {
if (!argv[2][i])
break;
switch (argv[2][i]) {
case 'c':
case 'C':
alt_dp_config |= ALT_DP_PIN_C;
break;
case 'd':
case 'D':
alt_dp_config |= ALT_DP_PIN_D;
break;
case 'e':
case 'E':
alt_dp_config |= ALT_DP_PIN_E;
break;
}
}
}
CPRINTS("Pins: %s%s%s",
(alt_dp_config & ALT_DP_PIN_C) ? "C" : "",
(alt_dp_config & ALT_DP_PIN_D) ? "D" : "",
(alt_dp_config & ALT_DP_PIN_E) ? "E" : "");
} else if (!strcasecmp(argv[1], "mf")) {
if (argc >= 3) {
i = strtoi(argv[2], &e, 10);
if (*e)
return EC_ERROR_PARAM3;
if (i)
alt_dp_config |= ALT_DP_MF_PREF;
else
alt_dp_config &= ~ALT_DP_MF_PREF;
}
CPRINTS("MF pref: %d", (alt_dp_config & ALT_DP_MF_PREF) != 0);
} else if (!strcasecmp(argv[1], "plug")) {
if (argc >= 3) {
i = strtoi(argv[2], &e, 10);
if (*e)
return EC_ERROR_PARAM3;
if (i)
alt_dp_config |= ALT_DP_PLUG;
else
alt_dp_config &= ~ALT_DP_PLUG;
}
CPRINTS("Plug or receptacle: %d",
(alt_dp_config & ALT_DP_PLUG) != 0);
} else if (!strcasecmp(argv[1], "hpd")) {
if (argc >= 3) {
if (!strncasecmp(argv[2], "ext", 3)) {
alt_dp_config &= ~ALT_DP_OVERRIDE_HPD;
ext_hpd_detection_enable(1);
} else if (!strncasecmp(argv[2], "h", 1)) {
alt_dp_config |= ALT_DP_OVERRIDE_HPD;
alt_dp_config |= ALT_DP_HPD_LVL;
/*
* Modify the HPD to high. Need to enable the
* external HPD signal monitoring. A monitor
* may send a IRQ at any time to notify DUT.
*/
ext_hpd_detection_enable(1);
pd_send_hpd(DUT, hpd_high);
} else if (!strncasecmp(argv[2], "l", 1)) {
alt_dp_config |= ALT_DP_OVERRIDE_HPD;
alt_dp_config &= ~ALT_DP_HPD_LVL;
ext_hpd_detection_enable(0);
pd_send_hpd(DUT, hpd_low);
} else if (!strcasecmp(argv[2], "irq")) {
pd_send_hpd(DUT, hpd_irq);
}
}
CPRINTS("HPD source: %s",
(alt_dp_config & ALT_DP_OVERRIDE_HPD) ? "overridden"
: "external");
CPRINTS("HPD level: %d", get_hpd_level());
} else if (!strcasecmp(argv[1], "help")) {
CPRINTS("Usage: usbc_action dp [enable|disable|hpd|mf|pins|"
"plug]");
}
return EC_SUCCESS;
}
static int cmd_usbc_action(int argc, char *argv[])
{
if (argc >= 2 && !strcasecmp(argv[1], "dp"))
return cmd_dp_action(argc - 1, &argv[1]);
if (argc != 2 && argc != 3)
return EC_ERROR_PARAM_COUNT;
/* TODO(b:140256624): drop *v command if we migrate to chg cmd. */
if (!strcasecmp(argv[1], "5v")) {
do_cc(CONF_SRC(cc_config));
user_limited_max_mv = 5000;
update_ports();
} else if (!strcasecmp(argv[1], "12v")) {
do_cc(CONF_SRC(cc_config));
user_limited_max_mv = 12000;
update_ports();
} else if (!strcasecmp(argv[1], "20v")) {
do_cc(CONF_SRC(cc_config));
user_limited_max_mv = 20000;
update_ports();
} else if (!strcasecmp(argv[1], "dev")) {
/* Set the limit back to original */
user_limited_max_mv = 20000;
do_cc(CONF_PDSNK(cc_config));
} else if (!strcasecmp(argv[1], "pol0")) {
do_cc(cc_config & ~CC_POLARITY);
} else if (!strcasecmp(argv[1], "pol1")) {
do_cc(cc_config | CC_POLARITY);
} else if (!strcasecmp(argv[1], "drp")) {
/* Toggle the DRP state, compatible with Plankton. */
do_cc(cc_config ^ CC_ENABLE_DRP);
CPRINTF("DRP = %d, host_mode = %d\n",
!!(cc_config & CC_ENABLE_DRP),
!!(cc_config & CC_ALLOW_SRC));
} else if (!strcasecmp(argv[1], "chg")) {
int sink_v;
if (argc != 3)
return EC_ERROR_PARAM2;
sink_v = atoi(argv[2]);
if (!sink_v)
return EC_ERROR_PARAM2;
user_limited_max_mv = sink_v * 1000;
do_cc(CONF_SRC(cc_config));
update_ports();
/*
* TODO(b:140256624): servod captures 'chg SRC' keyword to
* recognize if this command is supported in the firmware.
* Drop this message if when we phase out the usbc_role control.
*/
ccprintf("CHG SRC %dmV\n", user_limited_max_mv);
} else if (!strcasecmp(argv[1], "drswap")) {
if (argc == 2) {
CPRINTF("allow_dr_swap = %d\n", allow_dr_swap);
return EC_SUCCESS;
}
if (argc != 3)
return EC_ERROR_PARAM2;
allow_dr_swap = !!atoi(argv[2]);
} else if (!strcasecmp(argv[1], "prswap")) {
if (argc == 2) {
CPRINTF("allow_pr_swap = %d\n", allow_pr_swap);
return EC_SUCCESS;
}
if (argc != 3)
return EC_ERROR_PARAM2;
allow_pr_swap = !!atoi(argv[2]);
} else {
return EC_ERROR_PARAM1;
}
return EC_SUCCESS;
}
DECLARE_CONSOLE_COMMAND(usbc_action, cmd_usbc_action,
"5v|12v|20v|dev|pol0|pol1|drp|dp|chg x(x=voltage)|"
"drswap [1|0]|prswap [1|0]",
"Set Servo v4 type-C port state");
|