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Diffstat (limited to 'test/usb_typec_ctvpd.c')
| -rw-r--r-- | test/usb_typec_ctvpd.c | 1542 |
1 files changed, 0 insertions, 1542 deletions
diff --git a/test/usb_typec_ctvpd.c b/test/usb_typec_ctvpd.c deleted file mode 100644 index 52c8be0639..0000000000 --- a/test/usb_typec_ctvpd.c +++ /dev/null @@ -1,1542 +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. - * - * Test USB Type-C VPD and CTVPD module. - */ -#include "common.h" -#include "crc.h" -#include "task.h" -#include "test_util.h" -#include "timer.h" -#include "usb_pd.h" -#include "usb_sm.h" -#include "usb_tc_sm.h" -#include "util.h" -#include "usb_pd_tcpm.h" -#include "usb_pd_test_util.h" -#include "usb_sm_checks.h" -#include "vpd_api.h" - -#define PORT0 0 - -enum cc_type {CC1, CC2}; -enum vbus_type {VBUS_0 = 0, VBUS_5 = 5000}; -enum vconn_type {VCONN_0 = 0, VCONN_3 = 3000, VCONN_5 = 5000}; -enum snk_con_voltage_type {SRC_CON_DEF, SRC_CON_1_5, SRC_CON_3_0}; - -/* - * These enum definitions are declared in usb_tc_*_sm and are private to that - * file. If those definitions are re-ordered, then we need to update these - * definitions (should be very rare). - */ -enum usb_tc_state { - /* Normal States */ - TC_DISABLED, - TC_UNATTACHED_SNK, - TC_ATTACH_WAIT_SNK, - TC_ATTACHED_SNK, - TC_ERROR_RECOVERY, - TC_TRY_SNK, - TC_UNATTACHED_SRC, - TC_ATTACH_WAIT_SRC, - TC_TRY_WAIT_SRC, - TC_ATTACHED_SRC, - TC_CT_TRY_SNK, - TC_CT_ATTACH_WAIT_UNSUPPORTED, - TC_CT_ATTACHED_UNSUPPORTED, - TC_CT_UNATTACHED_UNSUPPORTED, - TC_CT_UNATTACHED_VPD, - TC_CT_DISABLED_VPD, - TC_CT_ATTACHED_VPD, - TC_CT_ATTACH_WAIT_VPD, -}; - -/* Defined in implementation */ -enum usb_tc_state get_state_tc(const int port); - -struct pd_port_t { - int host_mode; - int has_vbus; - int msg_tx_id; - int msg_rx_id; - int polarity; - int partner_role; /* -1 for none */ - int partner_polarity; - int rev; -} pd_port[CONFIG_USB_PD_PORT_MAX_COUNT]; - -uint64_t wait_for_state_change(int port, uint64_t timeout) -{ - uint64_t start; - uint64_t wait; - enum usb_tc_state state = get_state_tc(port); - - task_wake(PD_PORT_TO_TASK_ID(port)); - - wait = get_time().val + timeout; - start = get_time().val; - while (get_state_tc(port) == state && get_time().val < wait) { - task_wake(PD_PORT_TO_TASK_ID(port)); - task_wait_event(1 * MSEC); - } - - return get_time().val - start; -} - -#if defined(TEST_USB_TYPEC_CTVPD) -static int ct_connect_sink(enum cc_type cc, enum snk_con_voltage_type v) -{ - int ret; - - switch (v) { - case SRC_CON_DEF: - ret = (cc) ? mock_set_cc2_rp3a0_rd_l(PD_SRC_DEF_RD_THRESH_MV) : - mock_set_cc1_rp3a0_rd_l(PD_SRC_DEF_RD_THRESH_MV); - break; - case SRC_CON_1_5: - ret = (cc) ? mock_set_cc2_rp3a0_rd_l(PD_SRC_1_5_RD_THRESH_MV) : - mock_set_cc1_rp3a0_rd_l(PD_SRC_1_5_RD_THRESH_MV); - break; - case SRC_CON_3_0: - ret = (cc) ? mock_set_cc2_rp3a0_rd_l(PD_SRC_3_0_RD_THRESH_MV) : - mock_set_cc1_rp3a0_rd_l(PD_SRC_3_0_RD_THRESH_MV); - break; - default: - ret = 0; - } - - return ret; -} - -static int ct_disconnect_sink(void) -{ - int r1; - int r2; - - r1 = mock_set_cc1_rp3a0_rd_l(PD_SRC_DEF_VNC_MV); - r2 = mock_set_cc2_rp3a0_rd_l(PD_SRC_DEF_VNC_MV); - - return r1 & r2; -} - -static int ct_connect_source(enum cc_type cc, enum vbus_type vbus) -{ - mock_set_ct_vbus(vbus); - return (cc) ? mock_set_cc2_rpusb_odh(PD_SNK_VA_MV) : - mock_set_cc1_rpusb_odh(PD_SNK_VA_MV); -} - -static int ct_disconnect_source(void) -{ - int r1; - int r2; - - mock_set_ct_vbus(VBUS_0); - r1 = mock_set_cc1_rpusb_odh(0); - r2 = mock_set_cc2_rpusb_odh(0); - - return r1 & r2; -} -#endif - -static void host_disconnect_source(void) -{ - mock_set_host_vbus(VBUS_0); - mock_set_host_cc_source_voltage(0); - mock_set_host_cc_sink_voltage(0); -} - -static void host_connect_source(enum vbus_type vbus) -{ - mock_set_host_vbus(vbus); - mock_set_host_cc_source_voltage(PD_SNK_VA_MV); -} - -#if defined(TEST_USB_TYPEC_CTVPD) -static void host_connect_sink(enum snk_con_voltage_type v) -{ - switch (v) { - case SRC_CON_DEF: - mock_set_host_cc_sink_voltage(PD_SRC_DEF_RD_THRESH_MV); - break; - case SRC_CON_1_5: - mock_set_host_cc_sink_voltage(PD_SRC_1_5_RD_THRESH_MV); - break; - case SRC_CON_3_0: - mock_set_host_cc_sink_voltage(PD_SRC_3_0_RD_THRESH_MV); - break; - } -} -#endif - -static void init_port(int port) -{ - pd_port[port].polarity = 0; - pd_port[port].rev = PD_REV30; - pd_port[port].msg_tx_id = 0; - pd_port[port].msg_rx_id = 0; -} - -static int check_host_ra_rd(void) -{ - /* Make sure CC_RP3A0_RD_L is configured as GPO */ - if (mock_get_cfg_cc_rp3a0_rd_l() != PIN_GPO) - return 0; - - /* Make sure CC_RP3A0_RD_L is asserted low */ - if (mock_get_cc_rp3a0_rd_l() != 0) - return 0; - - /* Make sure VPDMCU_CC_EN is enabled */ - if (mock_get_mcu_cc_en() != 1) - return 0; - - /* Make sure CC_VPDMCU is configured as ADC */ - if (mock_get_cfg_cc_vpdmcu() != PIN_ADC) - return 0; - - /* Make sure CC_DB_EN_OD is HZ */ - if (mock_get_cc_db_en_od() != GPO_HZ) - return 0; - - return 1; -} - -static int check_host_rd(void) -{ - /* Make sure CC_RP3A0_RD_L is configured as GPO */ - if (mock_get_cfg_cc_rp3a0_rd_l() != PIN_GPO) - return 0; - - /* Make sure CC_RP3A0_RD_L is asserted low */ - if (mock_get_cc_rp3a0_rd_l() != 0) - return 0; - - /* Make sure VPDMCU_CC_EN is enabled */ - if (mock_get_mcu_cc_en() != 1) - return 0; - - /* Make sure CC_VPDMCU is configured as ADC */ - if (mock_get_cfg_cc_vpdmcu() != PIN_ADC) - return 0; - - /* Make sure CC_DB_EN_OD is LOW */ - if (mock_get_cc_db_en_od() != GPO_LOW) - return 0; - - return 1; -} - -#if defined(TEST_USB_TYPEC_CTVPD) -static int check_host_rp3a0(void) -{ - /* Make sure CC_RP3A0_RD_L is asserted high */ - if (mock_get_cc_rp3a0_rd_l() != 1) - return 0; - - return 1; -} - -static int check_host_rpusb(void) -{ - /* Make sure CC_RPUSB_ODH is asserted high */ - if (mock_get_cc_rpusb_odh() != 1) - return 0; - - /* Make sure CC_RP3A0_RD_L is configured as comparator */ - if (mock_get_cfg_cc_rp3a0_rd_l() != PIN_CMP) - return 0; - - return 1; -} - -static int check_host_cc_open(void) -{ - /* Make sure CC_RPUSB_ODH is hi-z */ - if (mock_get_cc_rpusb_odh() != GPO_HZ) - return 0; - - /* Make sure CC_RP3A0_RD_L is set to comparitor */ - if (mock_get_cfg_cc_rp3a0_rd_l() != PIN_CMP) - return 0; - - /* Make sure cc_db_en_od is set low */ - if (mock_get_cc_db_en_od() != GPO_LOW) - return 0; - - return 1; -} - -static int check_ct_ccs_hz(void) -{ - return (mock_get_ct_rd() == GPO_HIGH); -} - -static int check_ct_ccs_rd(void) -{ - return (mock_get_ct_rd() == GPO_LOW); -} - -static int check_ct_ccs_cc1_rpusb(void) -{ - return (mock_get_ct_cc1_rpusb() == 1); -} -#endif - -void inc_tx_id(int port) -{ - pd_port[port].msg_tx_id = (pd_port[port].msg_tx_id + 1) % 7; -} - -void inc_rx_id(int port) -{ - pd_port[port].msg_rx_id = (pd_port[port].msg_rx_id + 1) % 7; -} - -static int verify_goodcrc(int port, int role, int id) -{ - return pd_test_tx_msg_verify_sop_prime(port) && - pd_test_tx_msg_verify_short(port, PD_HEADER(PD_CTRL_GOOD_CRC, - role, role, id, 0, 0, 0)) && - pd_test_tx_msg_verify_crc(port) && - pd_test_tx_msg_verify_eop(port); -} - -static void simulate_rx_msg(int port, uint16_t header, int cnt, - const uint32_t *data) -{ - int i; - - pd_test_rx_set_preamble(port, 1); - pd_test_rx_msg_append_sop_prime(port); - pd_test_rx_msg_append_short(port, header); - - crc32_init(); - crc32_hash16(header); - - for (i = 0; i < cnt; ++i) { - pd_test_rx_msg_append_word(port, data[i]); - crc32_hash32(data[i]); - } - - pd_test_rx_msg_append_word(port, crc32_result()); - - pd_test_rx_msg_append_eop(port); - pd_test_rx_msg_append_last_edge(port); - - pd_simulate_rx(port); -} - -static void simulate_goodcrc(int port, int role, int id) -{ - simulate_rx_msg(port, PD_HEADER(PD_CTRL_GOOD_CRC, role, role, id, 0, - pd_port[port].rev, 0), 0, NULL); -} - -static void simulate_discovery_identity(int port) -{ - uint16_t header = PD_HEADER(PD_DATA_VENDOR_DEF, PD_ROLE_SOURCE, - 0, pd_port[port].msg_rx_id, - 1, pd_port[port].rev, 0); - uint32_t msg = VDO(USB_SID_PD, - 1, /* Structured VDM */ - VDO_SVDM_VERS(1) | - VDO_CMDT(CMDT_INIT) | - CMD_DISCOVER_IDENT); - - simulate_rx_msg(port, header, 1, (const uint32_t *)&msg); -} - -static int test_vpd_host_src_detection(void) -{ - int port = PORT0; - - mock_set_vconn(VCONN_0); - host_disconnect_source(); - - task_wake(PD_PORT_TO_TASK_ID(port)); - task_wait_event(40 * MSEC); - - /* - * TEST: - * Host is configured properly and start state is UNATTACHED_SNK - */ - TEST_ASSERT(check_host_ra_rd()); - TEST_ASSERT(get_state_tc(port) == TC_UNATTACHED_SNK); - - /* - * TEST: - * Host PORT Source Connection Detected - */ - - host_connect_source(VBUS_0); - mock_set_vconn(VCONN_0); - - wait_for_state_change(port, 40 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_ATTACH_WAIT_SNK); - - /* - * TEST: - * Host CC debounce in ATTACH_WAIT_SNK state - */ - - host_disconnect_source(); - - task_wake(PD_PORT_TO_TASK_ID(port)); - task_wait_event(5 * MSEC); - - /* - * TEST: - * Host CC debounce in ATTACH_WAIT_SNK state - */ - - host_connect_source(VBUS_0); - mock_set_vconn(VCONN_0); - - task_wake(PD_PORT_TO_TASK_ID(port)); - task_wait_event(50 * MSEC); - - /* - * TEST: - * Host Port Connection Removed - */ - host_disconnect_source(); - - wait_for_state_change(port, 40 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_UNATTACHED_SNK); - - return EC_SUCCESS; -} - -static int test_vpd_host_src_detection_vbus(void) -{ - int port = PORT0; - - mock_set_vconn(VCONN_0); - host_disconnect_source(); - - task_wake(PD_PORT_TO_TASK_ID(port)); - task_wait_event(40 * MSEC); - - /* - * TEST: - * Host is configured properly and start state is UNATTACHED_SNK - */ - - TEST_ASSERT(check_host_ra_rd()); - TEST_ASSERT(get_state_tc(port) == TC_UNATTACHED_SNK); - - /* - * TEST: - * Host Port Source Connection Detected - */ - - host_connect_source(VBUS_0); - mock_set_vconn(VCONN_0); - - wait_for_state_change(port, 40 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_ATTACH_WAIT_SNK); - - /* - * TEST: - * Host Port Source Detected for tCCDebounce and Host Port VBUS - * Detected. - */ - - host_connect_source(VBUS_5); - - wait_for_state_change(port, PD_T_CC_DEBOUNCE + 10 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_ATTACHED_SNK); - - /* - * TEST: - * Host Port VBUS Removed - */ - - host_connect_source(VBUS_0); - - /* - * The state changes from UNATTACHED_SNK to ATTACH_WAIT_SNK immediately - * if Rp is detected. - */ - wait_for_state_change(port, 10 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_ATTACH_WAIT_SNK); - - return EC_SUCCESS; -} - -static int test_vpd_host_src_detection_vconn(void) -{ - int port = PORT0; - - mock_set_vconn(VCONN_0); - host_disconnect_source(); - - task_wake(PD_PORT_TO_TASK_ID(port)); - task_wait_event(40 * MSEC); - - /* - * TEST: - * Host is configured properly and start state is UNATTACHED_SNK - */ - - TEST_ASSERT(check_host_ra_rd()); - TEST_ASSERT(get_state_tc(port) == TC_UNATTACHED_SNK); - - /* - * TEST: - * Host Source Connection Detected - */ - - host_connect_source(VBUS_0); - mock_set_vconn(VCONN_0); - - wait_for_state_change(port, 40 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_ATTACH_WAIT_SNK); - - /* - * TEST: - * Host Port Source Detected for tCCDebounce and VCONN Detected - */ - - host_connect_source(VBUS_0); - mock_set_vconn(VCONN_3); - - wait_for_state_change(port, PD_T_CC_DEBOUNCE + 10 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_ATTACHED_SNK); - - /* VCONN was detected. Make sure RA is removed */ - task_wake(PD_PORT_TO_TASK_ID(port)); - task_wait_event(40 * MSEC); - TEST_ASSERT(check_host_rd()); - - /* - * TEST: - * Host Port VCONN Removed - */ - - mock_set_host_cc_source_voltage(0); - mock_set_vconn(VCONN_0); - - wait_for_state_change(port, 10 * MSEC); - - TEST_EQ(get_state_tc(port), TC_UNATTACHED_SNK, "%d"); - - host_disconnect_source(); - - return EC_SUCCESS; -} - -static int test_vpd_host_src_detection_message_reception(void) -{ - int port = PORT0; - uint32_t expected_vdm_header = VDO(USB_VID_GOOGLE, - 1, /* Structured VDM */ - VDO_SVDM_VERS(1) | - VDO_CMDT(CMDT_RSP_ACK) | - CMD_DISCOVER_IDENT); - uint32_t expected_vdo_id_header = 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); - uint32_t expected_vdo_cert = 0; - uint32_t expected_vdo_product = VDO_PRODUCT( - CONFIG_USB_PID, - USB_BCD_DEVICE); - uint32_t expected_vdo_vpd = 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); - - mock_set_vconn(VCONN_0); - host_disconnect_source(); - - task_wake(PD_PORT_TO_TASK_ID(port)); - task_wait_event(40 * MSEC); - - /* - * TEST: - * Host is configured properly and start state is UNATTACHED_SNK - */ - - TEST_ASSERT(check_host_ra_rd()); - TEST_ASSERT(get_state_tc(port) == TC_UNATTACHED_SNK); - - /* - * Transition to ATTACHED_SNK - */ - - host_connect_source(VBUS_5); - - wait_for_state_change(port, 10 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_ATTACH_WAIT_SNK); - - wait_for_state_change(port, PD_T_CC_DEBOUNCE + 20 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_ATTACHED_SNK); - - /* Run state machines to enable rx monitoring */ - task_wake(PD_PORT_TO_TASK_ID(port)); - task_wait_event(30 * MSEC); - - /* - * TEST: - * Reception of Discovery Identity message - */ - - simulate_discovery_identity(port); - task_wait_event(30 * MSEC); - - TEST_ASSERT(verify_goodcrc(port, - PD_ROLE_SINK, pd_port[port].msg_rx_id)); - - task_wake(PD_PORT_TO_TASK_ID(port)); - task_wait_event(30 * MSEC); - inc_rx_id(port); - - /* Test Discover Identity Ack */ - TEST_ASSERT(pd_test_tx_msg_verify_sop_prime(port)); - TEST_ASSERT(pd_test_tx_msg_verify_short(port, - PD_HEADER(PD_DATA_VENDOR_DEF, PD_PLUG_FROM_CABLE, 0, - pd_port[port].msg_tx_id, 5, pd_port[port].rev, 0))); - TEST_ASSERT(pd_test_tx_msg_verify_word(port, expected_vdm_header)); - TEST_ASSERT(pd_test_tx_msg_verify_word(port, expected_vdo_id_header)); - TEST_ASSERT(pd_test_tx_msg_verify_word(port, expected_vdo_cert)); - TEST_ASSERT(pd_test_tx_msg_verify_word(port, expected_vdo_product)); - TEST_ASSERT(pd_test_tx_msg_verify_word(port, expected_vdo_vpd)); - TEST_ASSERT(pd_test_tx_msg_verify_crc(port)); - TEST_ASSERT(pd_test_tx_msg_verify_eop(port)); - - task_wake(PD_PORT_TO_TASK_ID(port)); - task_wait_event(30 * MSEC); - - /* Ack was good. Send GoodCRC */ - simulate_goodcrc(port, PD_ROLE_SOURCE, pd_port[port].msg_tx_id); - task_wake(PD_PORT_TO_TASK_ID(port)); - task_wait_event(30 * MSEC); - inc_tx_id(port); - - /* - * TEST: - * Host Port VBUS Removed - */ - - host_disconnect_source(); - - wait_for_state_change(port, 100 * MSEC); - - TEST_EQ(get_state_tc(port), TC_UNATTACHED_SNK, "%d"); - - - return EC_SUCCESS; -} - -#if defined(TEST_USB_TYPEC_CTVPD) -static int test_ctvpd_behavior_case1(void) -{ - int port = PORT0; - - mock_set_vconn(VCONN_0); - host_disconnect_source(); - TEST_ASSERT(ct_disconnect_source()); - TEST_ASSERT(ct_disconnect_sink()); - - task_wake(PD_PORT_TO_TASK_ID(port)); - task_wait_event(40 * MSEC); - - /* - * CASE 1: The following tests the behavior when a DRP is connected to a - * Charge-Through VCONN-Powered USB Device (abbreviated CTVPD), - * with no Power Source attached to the ChargeThrough port on - * the CTVPD. - */ - - /* 1. DRP and CTVPD are both in the unattached state */ - TEST_ASSERT(get_state_tc(port) == TC_UNATTACHED_SNK); - - /* - * a. DRP alternates between Unattached.SRC and Unattached.SNK - * - * b. CTVPD has applied Rd on its Charge-Through port’s CC1 and CC2 - * pins and Rd on the Host-side port’s CC pin - */ - TEST_ASSERT(check_host_ra_rd()); - TEST_ASSERT(check_ct_ccs_rd()); - - /* - * 2. DRP transitions from Unattached.SRC to AttachWait.SRC to - * Attached.SRC - * - * a. DRP in Unattached.SRC detects the CC pull-down of CTVPD which - * is in Unattached.SNK and DRP enters AttachWait.SRC - * b. DRP in AttachWait.SRC detects that pull down on CC persists for - * tCCDebounce, enters Attached.SRC and turns on VBUS and VCONN - */ - host_connect_source(VBUS_5); - mock_set_vconn(VCONN_3); - - /* - * 3. CTVPD transitions from Unattached.SNK to Attached.SNK through - * AttachWait.SNK. - * - * a. CTVPD detects the host-side CC pull-up of the DRP and CTVPD - * enters AttachWait.SNK - * b. CTVPD in AttachWait.SNK detects that pull up on the Host-side - * port’s CC persists for tCCDebounce, VCONN present and enters - * Attached.SNK - * c. CTVPD present a high-impedance to ground (above zOPEN) on its - * Charge-Through port’s CC1 and CC2 pins - */ - wait_for_state_change(port, 40 * MSEC); - TEST_ASSERT(get_state_tc(port) == TC_ATTACH_WAIT_SNK); - - wait_for_state_change(port, PD_T_CC_DEBOUNCE + 40 * MSEC); - TEST_ASSERT(get_state_tc(port) == TC_ATTACHED_SNK); - TEST_ASSERT(check_ct_ccs_hz()); - - /* - * 4. While DRP and CTVPD are in their respective attached states, DRP - * discovers the ChargeThrough CTVPD and transitions to - * CTUnattached.SNK - * - * a. DRP (as Source) queries the device identity via USB PD - * (Device Identity Command) on SOP’. - * b. CTVPD responds on SOP’, advertising that it is a - * Charge-Through VCONN-Powered USB Device - * c. DRP (as Source) removes VBUS - * d. DRP (as Source) changes its Rp to a Rd - * e. DRP (as Sink) continues to provide VCONN and enters - * CTUnattached.SNK - */ - host_disconnect_source(); - - /* - * 5. CTVPD transitions to CTUnattached.VPD - * - * a. CTVPD detects VBUS removal, VCONN presence, the low Host-side - * CC pin and enters CTUnattached.VPD - * b. CTVPD changes its host-side Rd to a Rp advertising 3.0 A - * c. CTVPD isolates itself from VBUS - * d. CTVPD apply Rd on its Charge-Through port’s CC1 and CC2 pins - */ - wait_for_state_change(port, 40 * MSEC); - TEST_ASSERT(get_state_tc(port) == TC_CT_UNATTACHED_VPD); - - /* - * 6. While the CTVPD in CTUnattached.VPD state and the DRP in - * CTUnattached.SNK state: - * - * a. CTVPD monitors Charge-Though CC pins for a source or sink; - * when a Power Source attach is detected, enters - * CTAttachWait.VPD; when a sink is detected, enters - * CTAttachWait.Unsupported - * b. CTVPD monitors VCONN for Host detach and when detected, enters - * Unattached.SNK - * c. DRP monitors VBUS and CC for CTVPD detach for tVPDDetach and - * when detected, enters Unattached.SNK - * d. DRP monitors VBUS for Power Source attach and when detected, - * enters CTAttached.SNK - */ - /* Attach Power Source */ - TEST_ASSERT(ct_connect_source(CC2, VBUS_0)); - - wait_for_state_change(port, 40 * MSEC); - TEST_EQ(get_state_tc(port), TC_CT_ATTACH_WAIT_VPD, "%d"); - - /* Remove Power Source */ - TEST_ASSERT(ct_disconnect_source()); - - wait_for_state_change(port, 40 * MSEC); - - TEST_EQ(get_state_tc(port), TC_CT_UNATTACHED_VPD, "%d"); - - /* Attach Sink */ - TEST_ASSERT(ct_connect_sink(CC1, SRC_CON_DEF)); - - wait_for_state_change(port, 40 * MSEC); - - TEST_EQ(get_state_tc(port), TC_CT_ATTACH_WAIT_UNSUPPORTED, "%d"); - - /* Remove VCONN (Host detach) */ - mock_set_vconn(VCONN_0); - - wait_for_state_change(port, 40 * MSEC); - - TEST_EQ(get_state_tc(port), TC_UNATTACHED_SNK, "%d"); - - return EC_SUCCESS; -} - -static int test_ctvpd_behavior_case2(void) -{ - int port = PORT0; - - mock_set_vconn(VCONN_0); - host_disconnect_source(); - TEST_ASSERT(ct_disconnect_source()); - TEST_ASSERT(ct_disconnect_sink()); - - task_wake(PD_PORT_TO_TASK_ID(port)); - task_wait_event(40 * MSEC); - - /* - * CASE 2: The following tests the behavior when a Power Source is - * connected to a Charge-Through VCONN-Powered USB Device - * (abbreviated CTVPD), with a Host already attached to the - * Host-Side port on the CTVPD. - */ - - /* - * 1. DRP is in CTUnattached.SNK state, CTVPD in CTUnattached.VPD, and - * Power Source in the unattached state - * - * a. CTVPD has applied Rd on the Charge-Through port’s CC1 and CC2 - * pins and Rp termination advertising 3.0 A on the Host-side - * port’s CC pin - */ - TEST_ASSERT(get_state_tc(port) == TC_UNATTACHED_SNK); - - host_connect_source(VBUS_5); - mock_set_vconn(VCONN_3); - - wait_for_state_change(port, 40 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_ATTACH_WAIT_SNK); - - wait_for_state_change(port, PD_T_CC_DEBOUNCE + 40 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_ATTACHED_SNK); - - /* Remove Host CC */ - mock_set_host_cc_source_voltage(0); - - wait_for_state_change(port, 40 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_CT_UNATTACHED_VPD); - TEST_ASSERT(check_ct_ccs_rd()); - TEST_ASSERT(check_host_rp3a0()); - - /* - * 2. Power Source transitions from Unattached.SRC to Attached.SRC - * through AttachWait.SRC. - * - * a. Power Source detects the CC pull-down of the CTVPD and enters - * AttachWait.SRC - * b. Power Source in AttachWait.SRC detects that pull down on CC - * persists for tCCDebounce, enters Attached.SRC and turns on - * VBUS - */ - TEST_ASSERT(ct_connect_source(CC2, VBUS_5)); - - /* - * 3. CTVPD transitions from CTUnattached.VPD through CTAttachWait.VPD - * to CTAttached.VPD - * - * a. CTVPD detects the Source’s Rp on one of its Charge-Through CC - * pins, and transitions to CTAttachWait.VPD - * b. CTVPD finishes any active USB PD communication on SOP’ and - * ceases to respond to SOP’ queries - * c. CTVPD in CTAttachWait.VPD detects that the pull up on - * Charge-Through CC pin persists for tCCDebounce, detects VBUS - * and enters CTAttached.VPD - * d. CTVPD connects the active Charge-Through CC pin to the - * Host-side port’s CC pin - * e. CTVPD disables its Rp termination advertising 3.0 A on the - * Host-side port’s CC pin - * f. CTVPD disables its Rd on the Charge-Through CC pins - * g. CTVPD connects VBUS from the Charge-Through side to the Host - * side - */ - - wait_for_state_change(port, 40 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_CT_ATTACH_WAIT_VPD); - - wait_for_state_change(port, PD_T_CC_DEBOUNCE + 40 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_CT_ATTACHED_VPD); - TEST_ASSERT(moch_get_ct_cl_sel() == CT_CC2); - TEST_ASSERT(check_host_cc_open()); - TEST_ASSERT(check_ct_ccs_hz()); - TEST_ASSERT(mock_get_vbus_pass_en()); - - /* - * 4. DRP (as Sink) transitions to CTAttached.SNK - * a. DRP (as Sink) detects VBUS, monitors vRd for available current - * and enter CTAttached.SNK - */ - - /* - * 5. While the devices are all in their respective attached states: - * a. CTVPD monitors VCONN for DRP detach and when detected, - * enters CTDisabled.VPD - * b. CTVPD monitors VBUS and CC for Power Source detach and when - * detected, enters CTUnattached.VPD within tVPDCTDD - * c. DRP (as Sink) monitors VBUS for Charge-Through Power Source - * detach and when detected, enters CTUnattached.SNK - * d. DRP (as Sink) monitors VBUS and CC for CTVPD detach and when - * detected, enters Unattached.SNK (and resumes toggling between - * Unattached.SNK and Unattached.SRC) - * e. Power Source monitors CC for CTVPD detach and when detected, - * enters Unattached.SRC - */ - mock_set_vconn(VCONN_0); - - wait_for_state_change(port, 40 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_CT_DISABLED_VPD); - - return EC_SUCCESS; -} - -static int test_ctvpd_behavior_case3(void) -{ - int port = PORT0; - - mock_set_vconn(VCONN_0); - host_disconnect_source(); - TEST_ASSERT(ct_disconnect_source()); - TEST_ASSERT(ct_disconnect_sink()); - - task_wake(PD_PORT_TO_TASK_ID(port)); - task_wait_event(40 * MSEC); - - /* - * CASE 3: The following describes the behavior when a Power Source is - * connected to a ChargeThrough VCONN-Powered USB Device - * (abbreviated CTVPD), with no Host attached to the Host-side - * port on the CTVPD. - */ - - /* - * 1. CTVPD and Power Source are both in the unattached state - * a. CTVPD has applied Rd on the Charge-Through port’s CC1 and CC2 - * pins and Rd on the Host-side port’s CC pin - */ - TEST_ASSERT(get_state_tc(port) == TC_UNATTACHED_SNK); - - TEST_ASSERT(check_ct_ccs_rd()); - TEST_ASSERT(check_host_ra_rd()); - TEST_ASSERT(ct_connect_source(CC2, VBUS_5)); - - /* - * 2. Power Source transitions from Unattached.SRC to Attached.SRC - * through AttachWait.SRC. - * - * a. Power Source detects the CC pull-down of the CTVPD and enters - * AttachWait.SRC - * b. Power Source in AttachWait.SRC detects that pull down on CC - * persists for tCCDebounce, enters Attached.SRC and turns on - * VBUS - */ - - /* 3. CTVPD alternates between Unattached.SNk and Unattached.SRC - * - * a. CTVPD detects the Source’s Rp on one of its Charge-Through CC - * pins, detects VBUS for tCCDebounce and starts alternating - * between Unattached.SRC and Unattached.SNK - */ - wait_for_state_change(port, PD_T_CC_DEBOUNCE + 40 * MSEC); - TEST_ASSERT(get_state_tc(port) == TC_UNATTACHED_SRC); - - /* - * 4. While the CTVPD alternates between Unattached.SRC and - * Unattached.SNK state and the Power Source in Attached.SRC state: - * - * a. CTVPD monitors the Host-side port’s CC pin for device attach - * and when detected, enters AttachWait.SRC - * b. CTVPD monitors VBUS for Power Source detach and when detected, - * enters Unattached.SNK - * c. Power Source monitors CC for CTVPD detach and when detected, - * enters Unattached.SRC - */ - - /* Attached host side device */ - host_connect_sink(SRC_CON_DEF); - - wait_for_state_change(port, 40 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_ATTACH_WAIT_SRC); - - /* Remove VBUS */ - TEST_ASSERT(ct_disconnect_source()); - - wait_for_state_change(port, 40 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_UNATTACHED_SNK); - - return EC_SUCCESS; -} - -static int test_ctvpd_behavior_case4(void) -{ - int port = PORT0; - uint32_t expected_vdm_header = VDO(USB_VID_GOOGLE, - 1, /* Structured VDM */ - VDO_SVDM_VERS(1) | - VDO_CMDT(CMDT_RSP_ACK) | - CMD_DISCOVER_IDENT); - uint32_t expected_vdo_id_header = 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); - uint32_t expected_vdo_cert = 0; - uint32_t expected_vdo_product = VDO_PRODUCT( - CONFIG_USB_PID, - USB_BCD_DEVICE); - uint32_t expected_vdo_vpd = 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); - - init_port(port); - mock_set_vconn(VCONN_0); - host_disconnect_source(); - TEST_ASSERT(ct_disconnect_source()); - TEST_ASSERT(ct_disconnect_sink()); - - task_wake(PD_PORT_TO_TASK_ID(port)); - task_wait_event(40 * MSEC); - - /* - * CASE 4: The following describes the behavior when a DRP is connected - * to a Charge-Through VCONN-Powered USB Device - * (abbreviated CTVPD), with a Power Source already attached to - * the Charge-Through side on the CTVPD. - */ - - /* - * 1. DRP, CTVPD and Sink are all in the unattached state - * - * a. DRP alternates between Unattached.SRC and Unattached.SNK - * b. CTVPD has applied Rd on its Charge-Through port’s CC1 and CC2 - * pins and Rd on the Host-side port’s CC pin - */ - TEST_ASSERT(get_state_tc(port) == TC_UNATTACHED_SNK); - - TEST_ASSERT(check_ct_ccs_rd()); - TEST_ASSERT(check_host_ra_rd()); - - /* - * 2. DRP transitions from Unattached.SRC to AttachWait.SRC to - * Attached.SRC - * - * a. DRP in Unattached.SRC detects the CC pull-down of CTVPD which - * is in Unattached.SNK and DRP enters AttachWait.SRC - * b. DRP in AttachWait.SRC detects that pull down on CC persists - * for tCCDebounce, enters Attached.SRC and turns on VBUS and - * VCONN - */ - - host_connect_source(VBUS_5); - mock_set_vconn(VCONN_3); - - /* - * 3. CTVPD transitions from Unattached.SNK to Attached.SNK through - * AttachWait.SNK. - * - * a. CTVPD detects the host-side CC pull-up of the DRP and CTVPD - * enters AttachWait.SNK - * b. CTVPD in AttachWait.SNK detects that pull up on the - * Host-side port’s CC persists for tCCDebounce, VCONN present - * and enters Attached.SNK - * c. CTVPD present a high-impedance to ground (above zOPEN) on its - * Charge-Through port’s CC1 and CC2 pins - */ - - wait_for_state_change(port, 40 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_ATTACH_WAIT_SNK); - - wait_for_state_change(port, PD_T_CC_DEBOUNCE + 40 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_ATTACHED_SNK); - TEST_ASSERT(check_ct_ccs_hz()); - - /* - * 4. While DRP and CTVPD are in their respective attached states, DRP - * discovers the ChargeThrough CTVPD and transitions to - * CTUnattached.SNK - * - * a. DRP (as Source) queries the device identity via USB PD - * (Discover Identity Command) on SOP’. - * b. CTVPD responds on SOP’, advertising that it is a - * Charge-Through VCONN-Powered USB Device - * c. DRP (as Source) removes VBUS - * d. DRP (as Source) changes its Rp to a Rd - * e. DRP (as Sink) continues to provide VCONN and enters - * CTUnattached.SNK - */ - - task_wake(PD_PORT_TO_TASK_ID(port)); - task_wait_event(40 * MSEC); - - simulate_discovery_identity(port); - task_wait_event(40 * MSEC); - - TEST_ASSERT(verify_goodcrc(port, - PD_ROLE_SINK, pd_port[port].msg_rx_id)); - - task_wake(PD_PORT_TO_TASK_ID(port)); - task_wait_event(40 * MSEC); - inc_rx_id(port); - - /* Test Discover Identity Ack */ - TEST_ASSERT(pd_test_tx_msg_verify_sop_prime(port)); - TEST_ASSERT(pd_test_tx_msg_verify_short(port, - PD_HEADER(PD_DATA_VENDOR_DEF, PD_PLUG_FROM_CABLE, 0, - pd_port[port].msg_tx_id, 5, pd_port[port].rev, 0))); - TEST_ASSERT(pd_test_tx_msg_verify_word(port, expected_vdm_header)); - TEST_ASSERT(pd_test_tx_msg_verify_word(port, expected_vdo_id_header)); - TEST_ASSERT(pd_test_tx_msg_verify_word(port, expected_vdo_cert)); - TEST_ASSERT(pd_test_tx_msg_verify_word(port, expected_vdo_product)); - TEST_ASSERT(pd_test_tx_msg_verify_word(port, expected_vdo_vpd)); - TEST_ASSERT(pd_test_tx_msg_verify_crc(port)); - TEST_ASSERT(pd_test_tx_msg_verify_eop(port)); - - task_wake(PD_PORT_TO_TASK_ID(port)); - task_wait_event(40 * MSEC); - - /* Ack was good. Send GoodCRC */ - simulate_goodcrc(port, PD_ROLE_SOURCE, pd_port[port].msg_tx_id); - task_wake(PD_PORT_TO_TASK_ID(port)); - task_wait_event(40 * MSEC); - inc_tx_id(port); - - /* - * 5. CTVPD transitions to CTUnattached.VPD - * - * a. CTVPD detects VBUS removal, VCONN presence, the low Host-side - * CC pin and enters CTUnattached.VPD - * b. CTVPD changes its host-side Rd to a Rp termination advertising - * 3.0 A - * c. CTVPD isolates itself from VBUS - * d. CTVPD apply Rd on its Charge-Through port’s CC1 and CC2 pins - */ - host_disconnect_source(); - - wait_for_state_change(port, 40 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_CT_UNATTACHED_VPD); - TEST_ASSERT(check_ct_ccs_rd()); - TEST_ASSERT(check_host_rp3a0()); - - /* - * 6. CTVPD alternates between CTUnattached.VPD and - * CTUnattached.Unsupported - */ - wait_for_state_change(port, PD_T_DRP_SRC + 10 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_CT_UNATTACHED_UNSUPPORTED); - - wait_for_state_change(port, PD_T_DRP_SRC + 10 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_CT_UNATTACHED_VPD); - TEST_ASSERT(ct_connect_source(CC2, VBUS_5)); - - wait_for_state_change(port, 40 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_CT_ATTACH_WAIT_VPD); - - return EC_SUCCESS; -} - -static int test_ctvpd_behavior_case5(void) -{ - int port = PORT0; - - mock_set_vconn(VCONN_0); - host_disconnect_source(); - TEST_ASSERT(ct_disconnect_source()); - TEST_ASSERT(ct_disconnect_sink()); - - task_wake(PD_PORT_TO_TASK_ID(port)); - task_wait_event(40 * MSEC); - - /* - * CASE 5: The following describes the behavior when a Power Source is - * connected to a ChargeThrough VCONN-Powered USB Device - * (abbreviated CTVPD), with a DRP (with dead battery) attached - * to the Host-side port on the CTVPD. - */ - - /* - * 1. DRP, CTVPD and Power Source are all in the unattached state - * - * a. DRP apply dead battery Rd - * b. CTVPD apply Rd on the Charge-Through port’s CC1 and CC2 pins - * and Rd on the Host-side port’s CC pin - */ - TEST_ASSERT(get_state_tc(port) == TC_UNATTACHED_SNK); - - TEST_ASSERT(check_ct_ccs_rd()); - TEST_ASSERT(check_host_ra_rd()); - - /* - * 2. Power Source transitions from Unattached.SRC to Attached.SRC - * through AttachWait.SRC. - * - * a. Power Source detects the CC pull-down of the CTVPD and enters - * AttachWait.SRC - * b. Power Source in AttachWait.SRC detects that pull down on CC - * persists for tCCDebounce, enters Attached.SRC and enable VBUS - */ - TEST_ASSERT(ct_connect_source(CC2, VBUS_5)); - - /* - * 3. CTVPD alternates between Unattached.SNK and Unattached.SRC - * - * a. CTVPD detects the Source’s Rp on one of its Charge-Through CC - * pins, detects VBUS for tCCDebounce and starts alternating - * between Unattached.SRC and Unattached.SNK - */ - - wait_for_state_change(port, PD_T_CC_DEBOUNCE + 40 * MSEC); - TEST_ASSERT(get_state_tc(port) == TC_UNATTACHED_SRC); - - /* Connect Host With Dead Battery */ - host_connect_sink(SRC_CON_DEF); - - /* - * 4. CTVPD transitions from Unattached.SRC to Try.SNK through - * AttachWait.SRC - * - * a. CTVPD in Unattached.SRC detects the CC pull-down of DRP which - * is in Unattached.SNK and CTVPD enters AttachWait.SRC - * b. CTVPD in AttachWait.SRC detects that pull down on CC persists - * for tCCDebounce and enters Try.SNK - * c. CTVPD disables Rp termination advertising Default USB Power on - * the Host-side port’s CC - * d. CTVPD enables Rd on the Host-side port’s CC - */ - - wait_for_state_change(port, 40 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_ATTACH_WAIT_SRC); - - wait_for_state_change(port, PD_T_CC_DEBOUNCE + 10 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_TRY_SNK); - TEST_ASSERT(check_host_ra_rd()); - - /* 5. DRP in dead battery condition remains in Unattached.SNK */ - - /* - * 6. CTVPD transitions from Try.SNK to Attached.SRC through - * TryWait.SRC - * - * a. CTVPD didn’t detect the CC pull-up of the DRP for - * tTryDebounce after tDRPTry and enters TryWait.SRC - * b. CTVPD disables Rd on the Host-side port’s CC - * c. CTVPD enables Rp termination advertising Default USB Power on - * the Host-side port’s CC - * d. CTVPD detects the CC pull-down of the DRP for tTryCCDebounce - * and enters Attached.SRC - * e. CTVPD connects VBUS from the Charge-Through side to the Host - * side - */ - wait_for_state_change(port, PD_T_TRY_CC_DEBOUNCE + - PD_T_DRP_TRY + 40 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_TRY_WAIT_SRC); - TEST_ASSERT(check_host_rpusb()); - - wait_for_state_change(port, 40 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_ATTACHED_SRC); - TEST_ASSERT(mock_get_vbus_pass_en()); - - /* - * 7. DRP transitions from Unattached.SNK to Attached.SNK through - * AttachWait.SNK - * - * a. DRP in Unattached.SNK detects the CC pull-up of CTVPD which is - * in Attached.SRC and DRP enters AttachWait.SNK - * b. DRP in AttachWait.SNK detects that pull up on CC persists for - * tCCDebounce, VBUS present and enters Attached.SNK - */ - - /* - * 8. While the devices are all in their respective attached states: - * a. CTVPD monitors the Host-side port’s CC pin for device attach - * and when detected, enters Unattached.SNK - * b. CTVPD monitors VBUS for Power Source detach and when detected, - * enters Unattached.SNK - * c. Power Source monitors CC for CTVPD detach and when detected, - * enters Unattached.SRC - * d. DRP monitors VBUS for CTVPD detach and when detected, enters - * Unattached.SNK - * e. Additionally, the DRP may query the identity of the cable via - * USB PD on SOP’ when it has sufficient battery power and when - * a Charge-Through VPD is identified enters TryWait.SRC if - * implemented, or enters Unattached.SRC if TryWait.SRC is not - * supported - */ - TEST_ASSERT(ct_connect_source(CC2, VBUS_0)); - - wait_for_state_change(port, 40 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_UNATTACHED_SNK); - - return EC_SUCCESS; -} - -static int test_ctvpd_behavior_case6(void) -{ - int port = PORT0; - - mock_set_vconn(VCONN_0); - host_disconnect_source(); - TEST_ASSERT(ct_disconnect_source()); - TEST_ASSERT(ct_disconnect_sink()); - - task_wake(PD_PORT_TO_TASK_ID(port)); - task_wait_event(40 * MSEC); - - /* - * CASE 6: The following describes the behavior when a DRP is connected - * to a Charge-Through VCONN-Powered USB Device - * (abbreviated CTVPD) and a Sink is attached to the - * Charge-Through port on the CTVPD. - */ - - /* - * 1. DRP, CTVPD and Sink are all in the unattached state - * - * a. DRP alternates between Unattached.SRC and Unattached.SNK - * b. CTVPD has applied Rd on its Charge-Through port’s CC1 and CC2 - * pins and Rd on the Host-side port’s CC pin - */ - TEST_ASSERT(get_state_tc(port) == TC_UNATTACHED_SNK); - TEST_ASSERT(check_ct_ccs_rd()); - TEST_ASSERT(check_host_ra_rd()); - - /* - * 2. DRP transitions from Unattached.SRC to AttachWait.SRC to - * Attached.SRC - * - * a. DRP in Unattached.SRC detects the CC pull-down of CTVPD which - * is in Unattached.SNK and DRP enters AttachWait.SRC - * b. DRP in AttachWait.SRC detects that pull down on CC persists - * for tCCDebounce, enters Attached.SRC and turns on VBUS and - * VCONN - */ - host_connect_source(VBUS_5); - mock_set_vconn(VCONN_3); - - /* - * 3. CTVPD transitions from Unattached.SNK to Attached.SNK through - * AttachWait.SNK. - * - * a. CTVPD detects the host-side CC pull-up of the DRP and CTVPD - * enters AttachWait.SNK - * b. CTVPD in AttachWait.SNK detects that pull up on the Host-side - * port’s CC persists for tCCDebounce, VCONN present and enters - * Attached.SNK - * c. CTVPD present a high-impedance to ground (above zOPEN) on its - * Charge-Through port’s CC1 and CC2 pins - */ - wait_for_state_change(port, 40 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_ATTACH_WAIT_SNK); - - wait_for_state_change(port, PD_T_CC_DEBOUNCE + 40 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_ATTACHED_SNK); - TEST_ASSERT(check_ct_ccs_hz()); - - /* - * 4. While DRP and CTVPD are in their respective attached states, DRP - * discovers the ChargeThrough CTVPD and transitions to - * CTUnattached.SNK - * - * a. DRP (as Source) queries the device identity via USB PD - * (Discover Identity Command) on SOP’. - * b. CTVPD responds on SOP’, advertising that it is a - * Charge-Through VCONN-Powered USB Device - * c. DRP (as Source) removes VBUS - * d. DRP (as Source) changes its Rp to a Rd - * e. DRP (as Sink) continues to provide VCONN and enters - * CTUnattached.SNK - */ - - host_disconnect_source(); - host_connect_sink(SRC_CON_DEF); - - /* - * 5. CTVPD transitions to CTUnattached.VPD - * - * a. CTVPD detects VBUS removal, VCONN presence, the low Host-side - * CC pin and enters CTUnattached.VPD - * b. CTVPD changes its host-side Rd to a Rp termination advertising - * 3.0 A - * c. CTVPD isolates itself from VBUS - * d. CTVPD apply Rd on its Charge-Through port’s CC1 and CC2 pins - */ - wait_for_state_change(port, 40 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_CT_UNATTACHED_VPD); - TEST_ASSERT(check_host_rp3a0()); - TEST_ASSERT(mock_get_vbus_pass_en() == 0); - TEST_ASSERT(check_ct_ccs_rd()); - - /* - * 6. CTVPD alternates between CTUnattached.VPD and - * CTUnattached.Unsupported - * - * a. CTVPD detects SRC.open on its Charge-Through CC pins and - * starts alternating between CTUnattached.VPD and - * CTUnattached.Unsupported - */ - wait_for_state_change(port, PD_T_DRP_SNK + 40 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_CT_UNATTACHED_UNSUPPORTED); - - wait_for_state_change(port, PD_T_DRP_SNK + 40 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_CT_UNATTACHED_VPD); - - wait_for_state_change(port, PD_T_DRP_SNK + 40 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_CT_UNATTACHED_UNSUPPORTED); - - /* - * 7. CTVPD transitions from CTUnattached.Unsupported to CTTry.SNK - * through CTAttachWait.Unsupported - * - * a. CTVPD in CTUnattached.Unsupported detects the CC pull-down of - * the Sink which is in Unattached.SNK and CTVPD enters - * CTAttachWait.Unsupported - * b. CTVPD in CTAttachWait.Unsupported detects that pull down on CC - * persists for tCCDebounce and enters CTTry.SNK - * c. CTVPD disables Rp termination advertising Default USB Power on - * the ChargeThrough port’s CC pins - * d. CTVPD enables Rd on the Charge-Through port’s CC pins - */ - TEST_ASSERT(ct_connect_sink(CC1, SRC_CON_DEF)); - - wait_for_state_change(port, 40 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_CT_ATTACH_WAIT_UNSUPPORTED); - - wait_for_state_change(port, PD_T_CC_DEBOUNCE + 40 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_CT_TRY_SNK); - TEST_ASSERT(check_ct_ccs_rd()); - - /* - * 8. CTVPD transitions from CTTry.SNK to CTAttached.Unsupported - * - * a. CTVPD didn’t detect the CC pull-up of the potential Source - * for tDRPTryWait after tDRPTry and enters - * CTAttached.Unsupported - */ - - wait_for_state_change(port, PD_T_DRP_TRY + PD_T_TRY_WAIT + 40 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_CT_ATTACHED_UNSUPPORTED); - - /* - * 9. While the CTVPD in CTAttached.Unsupported state, the DRP in - * CTUnattached.SNK state and the Sink in Unattached.SNK state: - * - * a. CTVPD disables the Rd termination on the Charge-Through - * port’s CC pins and applies Rp termination advertising - * Default USB Power - * b. CTVPD exposes a USB Billboard Device Class to the DRP - * indicating that it is connected to an unsupported device on - * its Charge Through port - * c. CTVPD monitors Charge-Though CC pins for Sink detach and when - * detected, enters CTUnattached.VPD - * d. CTVPD monitors VCONN for Host detach and when detected, enters - * Unattached.SNK - * e. DRP monitors CC for CTVPD detach for tVPDDetach and when - * detected, enters Unattached.SNK - * f. DRP monitors VBUS for CTVPD Charge-Through source attach and, - * when detected, enters CTAttached.SNK - */ - - TEST_ASSERT(check_ct_ccs_cc1_rpusb()); - TEST_ASSERT(mock_get_present_billboard() == BB_SNK); - - TEST_ASSERT(ct_disconnect_sink()); - - wait_for_state_change(port, 40 * MSEC); - - TEST_ASSERT(get_state_tc(port) == TC_CT_UNATTACHED_VPD); - - return EC_SUCCESS; -} -#endif - -void run_test(int argc, char **argv) -{ - test_reset(); - - init_port(PORT0); - - /* VPD and CTVPD tests */ - RUN_TEST(test_vpd_host_src_detection); - RUN_TEST(test_vpd_host_src_detection_vbus); - RUN_TEST(test_vpd_host_src_detection_vconn); - RUN_TEST(test_vpd_host_src_detection_message_reception); - - /* CTVPD only tests */ -#if defined(TEST_USB_TYPEC_CTVPD) - /* DRP to VCONN-Powered USB Device (CTVPD) Behavior Tests */ - RUN_TEST(test_ctvpd_behavior_case1); - RUN_TEST(test_ctvpd_behavior_case2); - RUN_TEST(test_ctvpd_behavior_case3); - RUN_TEST(test_ctvpd_behavior_case4); - RUN_TEST(test_ctvpd_behavior_case5); - RUN_TEST(test_ctvpd_behavior_case6); -#endif - - /* Do basic state machine validity checks last. */ - RUN_TEST(test_tc_no_parent_cycles); - RUN_TEST(test_tc_all_states_named); - - /* - * Since you have to include TypeC layer when adding PE layer, the - * PE test would have the same build dependencies, so go ahead and test - * te PE statemachine here so we don't have to create another test exe - */ - RUN_TEST(test_pe_no_parent_cycles); - RUN_TEST(test_pe_all_states_named); - - test_print_result(); -} - |