diff options
Diffstat (limited to 'common/usbc/usb_pe_ctvpd_sm.c')
| -rw-r--r-- | common/usbc/usb_pe_ctvpd_sm.c | 237 |
1 files changed, 0 insertions, 237 deletions
diff --git a/common/usbc/usb_pe_ctvpd_sm.c b/common/usbc/usb_pe_ctvpd_sm.c deleted file mode 100644 index 346a57a461..0000000000 --- a/common/usbc/usb_pe_ctvpd_sm.c +++ /dev/null @@ -1,237 +0,0 @@ -/* Copyright 2019 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 "common.h" -#include "console.h" -#include "task.h" -#include "util.h" -#include "usb_pd.h" -#include "usb_pd_tcpm.h" -#include "usb_pe_sm.h" -#include "usb_prl_sm.h" -#include "usb_pd_tcpm.h" -#include "usb_tc_sm.h" -#include "usb_emsg.h" -#include "usb_sm.h" - -/* USB Policy Engine Charge-Through VCONN Powered Device module */ - -/* Policy Engine Flags */ -#define PE_FLAGS_MSG_RECEIVED BIT(0) - -/** - * This is the PE Port object that contains information needed to - * implement a VCONN and Charge-Through VCONN Powered Device. - */ -static struct policy_engine { - /* state machine context */ - struct sm_ctx ctx; - /* port flags, see PE_FLAGS_* */ - uint32_t flags; -} pe[CONFIG_USB_PD_PORT_MAX_COUNT]; - -/* List of all policy-engine-level states */ -enum usb_pe_state { - PE_REQUEST, -}; - -/* Forward declare the full list of states. This is indexed by usb_pe_states */ -static const struct usb_state pe_states[]; - -static void set_state_pe(const int port, enum usb_pe_state new_state) -{ - set_state(port, &pe[port].ctx, &pe_states[new_state]); -} - -static void pe_init(int port) -{ - const struct sm_ctx cleared = {}; - - pe[port].flags = 0; - pe[port].ctx = cleared; - set_state_pe(port, PE_REQUEST); -} - -bool pe_in_frs_mode(int port) -{ - /* Will never be in FRS mode */ - return false; -} - -bool pe_in_local_ams(int port) -{ - /* We never start a local AMS */ - return false; -} - -void pe_run(int port, int evt, int en) -{ - static enum sm_local_state local_state[CONFIG_USB_PD_PORT_MAX_COUNT]; - - switch (local_state[port]) { - case SM_PAUSED: - if (!en) - break; - /* fall through */ - case SM_INIT: - pe_init(port); - local_state[port] = SM_RUN; - /* fall through */ - case SM_RUN: - if (en) - run_state(port, &pe[port].ctx); - else - local_state[port] = SM_PAUSED; - break; - } -} - -void pe_message_received(int port) -{ - pe[port].flags |= PE_FLAGS_MSG_RECEIVED; - task_wake(PD_PORT_TO_TASK_ID(port)); -} - -/** - * NOTE: - * The Charge-Through Vconn Powered Device's Policy Engine is very - * simple and no implementation is needed for the following functions - * that might be called by the Protocol Layer. - */ - -void pe_hard_reset_sent(int port) -{ - /* No implementation needed by this policy engine */ -} - -void pe_got_hard_reset(int port) -{ - /* No implementation needed by this policy engine */ -} - -void pe_report_error(int port, enum pe_error e, enum tcpci_msg_type type) -{ - /* No implementation needed by this policy engine */ -} - -void pe_report_discard(int port) -{ - /* No implementation needed by this policy engine */ -} - -void pe_got_soft_reset(int port) -{ - /* No implementation needed by this policy engine */ -} - -void pe_message_sent(int port) -{ - /* No implementation needed by this policy engine */ -} - -static void pe_request_run(const int port) -{ - uint32_t *payload = (uint32_t *)tx_emsg[port].buf; - uint32_t header = rx_emsg[port].header; - uint32_t vdo = *(uint32_t *)rx_emsg[port].buf; - - if (pe[port].flags & PE_FLAGS_MSG_RECEIVED) { - pe[port].flags &= ~PE_FLAGS_MSG_RECEIVED; - - /* - * Only support Structured VDM Discovery - * Identity message - */ - - if (PD_HEADER_TYPE(header) != PD_DATA_VENDOR_DEF) - return; - - if (PD_HEADER_CNT(header) == 0) - return; - - if (!PD_VDO_SVDM(vdo)) - return; - - if (PD_VDO_CMD(vdo) != CMD_DISCOVER_IDENT) - return; - -#ifdef CONFIG_USB_CTVPD - /* - * We have a valid DISCOVER IDENTITY message. - * Attempt to reset support timer - */ - tc_reset_support_timer(port); -#endif - /* Prepare to send ACK */ - - /* VDM Header */ - payload[0] = VDO( - USB_VID_GOOGLE, - 1, /* Structured VDM */ - VDO_SVDM_VERS(1) | - VDO_CMDT(CMDT_RSP_ACK) | - CMD_DISCOVER_IDENT); - - /* ID Header VDO */ - payload[1] = VDO_IDH( - 0, /* Not a USB Host */ - 1, /* Capable of being enumerated as USB Device */ - IDH_PTYPE_VPD, - 0, /* Modal Operation Not Supported */ - USB_VID_GOOGLE); - - /* Cert State VDO */ - payload[2] = 0; - - /* Product VDO */ - payload[3] = VDO_PRODUCT( - CONFIG_USB_PID, - USB_BCD_DEVICE); - - /* VPD VDO */ - payload[4] = VDO_VPD( - VPD_HW_VERSION, - VPD_FW_VERSION, - VPD_MAX_VBUS_20V, - IS_ENABLED(CONFIG_USB_CTVPD) ? VPD_CT_CURRENT - : 0, - IS_ENABLED(CONFIG_USB_CTVPD) ? VPD_VBUS_IMP( - VPD_VBUS_IMPEDANCE) - : 0, - IS_ENABLED(CONFIG_USB_CTVPD) ? VPD_GND_IMP( - VPD_GND_IMPEDANCE) - : 0, - IS_ENABLED(CONFIG_USB_CTVPD) ? VPD_CTS_SUPPORTED - : VPD_CTS_NOT_SUPPORTED); - - /* 20 bytes, 5 data objects */ - tx_emsg[port].len = 20; - - /* Set to highest revision supported by both ports. */ - prl_set_rev(port, TCPCI_MSG_SOP_PRIME, - (PD_HEADER_REV(header) > PD_REV30) ? - PD_REV30 : PD_HEADER_REV(header)); - /* Send the ACK */ - prl_send_data_msg(port, TCPCI_MSG_SOP_PRIME, - PD_DATA_VENDOR_DEF); - } -} - -/* All policy-engine-level states. */ -static const struct usb_state pe_states[] = { - [PE_REQUEST] = { - .run = pe_request_run, - }, -}; - -#ifdef TEST_BUILD -const struct test_sm_data test_pe_sm_data[] = { - { - .base = pe_states, - .size = ARRAY_SIZE(pe_states), - }, -}; -const int test_pe_sm_data_size = ARRAY_SIZE(test_pe_sm_data); -#endif |