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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.
*
* Host commands for TCPMv2 USB PD module
*/
#include <string.h>
#include "console.h"
#include "ec_commands.h"
#include "host_command.h"
#include "usb_mux.h"
#include "usb_pd.h"
#include "usb_pd_tcpm.h"
#include "util.h"
#define CPRINTF(format, args...) cprintf(CC_USBPD, format, ## args)
#define CPRINTS(format, args...) cprints(CC_USBPD, format, ## args)
/* Retrieve all discovery results for the given port and transmit type */
static enum ec_status hc_typec_discovery(struct host_cmd_handler_args *args)
{
const struct ec_params_typec_discovery *p = args->params;
struct ec_response_typec_discovery *r = args->response;
const struct pd_discovery *disc;
enum tcpci_msg_type type;
/* Confirm the number of HC VDOs matches our stored VDOs */
BUILD_ASSERT(sizeof(r->discovery_vdo) == sizeof(union disc_ident_ack));
if (p->port >= board_get_usb_pd_port_count())
return EC_RES_INVALID_PARAM;
if (p->partner_type > TYPEC_PARTNER_SOP_PRIME)
return EC_RES_INVALID_PARAM;
type = p->partner_type == TYPEC_PARTNER_SOP ?
TCPCI_MSG_SOP : TCPCI_MSG_SOP_PRIME;
/*
* Clear out access mask so we can track if tasks have touched data
* since read started.
*/
pd_discovery_access_clear(p->port, type);
disc = pd_get_am_discovery_and_notify_access(p->port, type);
/* Initialize return size to that of discovery with no SVIDs */
args->response_size = sizeof(*r);
if (pd_get_identity_discovery(p->port, type) == PD_DISC_COMPLETE) {
r->identity_count = disc->identity_cnt;
memcpy(r->discovery_vdo,
pd_get_identity_response(p->port, type)->raw_value,
sizeof(r->discovery_vdo));
} else {
r->identity_count = 0;
return EC_RES_SUCCESS;
}
if (pd_get_modes_discovery(p->port, type) == PD_DISC_COMPLETE) {
int svid_i;
int max_resp_svids = (args->response_max - args->response_size)/
sizeof(struct svid_mode_info);
if (disc->svid_cnt > max_resp_svids) {
CPRINTS("Warn: SVIDS exceeded HC response");
r->svid_count = max_resp_svids;
} else {
r->svid_count = disc->svid_cnt;
}
for (svid_i = 0; svid_i < r->svid_count; svid_i++) {
r->svids[svid_i].svid = disc->svids[svid_i].svid;
r->svids[svid_i].mode_count =
disc->svids[svid_i].mode_cnt;
memcpy(r->svids[svid_i].mode_vdo,
disc->svids[svid_i].mode_vdo,
sizeof(r->svids[svid_i].mode_vdo));
args->response_size += sizeof(struct svid_mode_info);
}
} else {
r->svid_count = 0;
}
/*
* Verify that another task did not access this data during the duration
* of the copy. If the data was accessed, return BUSY so the AP will
* try retrieving again and get the updated data.
*/
if (!pd_discovery_access_validate(p->port, type)) {
CPRINTS("[C%d] %s returns EC_RES_BUSY!!\n", p->port, __func__);
return EC_RES_BUSY;
}
return EC_RES_SUCCESS;
}
DECLARE_HOST_COMMAND(EC_CMD_TYPEC_DISCOVERY,
hc_typec_discovery,
EC_VER_MASK(0));
static enum ec_status hc_typec_control(struct host_cmd_handler_args *args)
{
const struct ec_params_typec_control *p = args->params;
if (p->port >= board_get_usb_pd_port_count())
return EC_RES_INVALID_PARAM;
switch (p->command) {
case TYPEC_CONTROL_COMMAND_EXIT_MODES:
pd_dpm_request(p->port, DPM_REQUEST_EXIT_MODES);
break;
case TYPEC_CONTROL_COMMAND_CLEAR_EVENTS:
pd_clear_events(p->port, p->clear_events_mask);
break;
case TYPEC_CONTROL_COMMAND_ENTER_MODE:
return pd_request_enter_mode(p->port, p->mode_to_enter);
default:
return EC_RES_INVALID_PARAM;
}
return EC_RES_SUCCESS;
}
DECLARE_HOST_COMMAND(EC_CMD_TYPEC_CONTROL, hc_typec_control, EC_VER_MASK(0));
static enum ec_status hc_typec_status(struct host_cmd_handler_args *args)
{
const struct ec_params_typec_status *p = args->params;
struct ec_response_typec_status *r = args->response;
const char *tc_state_name;
if (p->port >= board_get_usb_pd_port_count())
return EC_RES_INVALID_PARAM;
if (args->response_max < sizeof(*r))
return EC_RES_RESPONSE_TOO_BIG;
args->response_size = sizeof(*r);
r->pd_enabled = pd_comm_is_enabled(p->port);
r->dev_connected = pd_is_connected(p->port);
r->sop_connected = pd_capable(p->port);
r->power_role = pd_get_power_role(p->port);
r->data_role = pd_get_data_role(p->port);
r->vconn_role = pd_get_vconn_state(p->port) ? PD_ROLE_VCONN_SRC :
PD_ROLE_VCONN_OFF;
r->polarity = pd_get_polarity(p->port);
r->cc_state = pd_get_task_cc_state(p->port);
r->dp_pin = get_dp_pin_mode(p->port);
r->mux_state = usb_mux_get(p->port);
tc_state_name = pd_get_task_state_name(p->port);
strzcpy(r->tc_state, tc_state_name, sizeof(r->tc_state));
r->events = pd_get_events(p->port);
r->sop_revision = r->sop_connected ?
PD_STATUS_REV_SET_MAJOR(pd_get_rev(p->port, TCPCI_MSG_SOP)) : 0;
r->sop_prime_revision =
pd_get_identity_discovery(p->port, TCPCI_MSG_SOP_PRIME) ==
PD_DISC_COMPLETE ?
PD_STATUS_REV_SET_MAJOR(pd_get_rev(p->port,
TCPCI_MSG_SOP_PRIME))
: 0;
r->source_cap_count = pd_get_src_cap_cnt(p->port);
memcpy(r->source_cap_pdos, pd_get_src_caps(p->port),
r->source_cap_count * sizeof(uint32_t));
r->sink_cap_count = pd_get_snk_cap_cnt(p->port);
memcpy(r->sink_cap_pdos, pd_get_snk_caps(p->port),
r->sink_cap_count * sizeof(uint32_t));
return EC_RES_SUCCESS;
}
DECLARE_HOST_COMMAND(EC_CMD_TYPEC_STATUS, hc_typec_status, EC_VER_MASK(0));
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