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authorJack Rosenthal <jrosenth@chromium.org>2021-11-04 12:11:58 -0600
committerCommit Bot <commit-bot@chromium.org>2021-11-05 04:22:34 +0000
commit252457d4b21f46889eebad61d4c0a65331919cec (patch)
tree01856c4d31d710b20e85a74c8d7b5836e35c3b98 /common/usbc/usb_tc_drp_acc_trysrc_sm.c
parent08f5a1e6fc2c9467230444ac9b582dcf4d9f0068 (diff)
downloadchrome-ec-stabilize-14682.B-ish.tar.gz
In the interest of making long-term branch maintenance incur as little technical debt on us as possible, we should not maintain any files on the branch we are not actually using. This has the added effect of making it extremely clear when merging CLs from the main branch when changes have the possibility to affect us. The follow-on CL adds a convenience script to actually pull updates from the main branch and generate a CL for the update. BUG=b:204206272 BRANCH=ish TEST=make BOARD=arcada_ish && make BOARD=drallion_ish Signed-off-by: Jack Rosenthal <jrosenth@chromium.org> Change-Id: I17e4694c38219b5a0823e0a3e55a28d1348f4b18 Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3262038 Reviewed-by: Jett Rink <jettrink@chromium.org> Reviewed-by: Tom Hughes <tomhughes@chromium.org>
Diffstat (limited to 'common/usbc/usb_tc_drp_acc_trysrc_sm.c')
-rw-r--r--common/usbc/usb_tc_drp_acc_trysrc_sm.c4160
1 files changed, 0 insertions, 4160 deletions
diff --git a/common/usbc/usb_tc_drp_acc_trysrc_sm.c b/common/usbc/usb_tc_drp_acc_trysrc_sm.c
deleted file mode 100644
index 182ea686ec..0000000000
--- a/common/usbc/usb_tc_drp_acc_trysrc_sm.c
+++ /dev/null
@@ -1,4160 +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 "charge_manager.h"
-#include "charge_state.h"
-#include "common.h"
-#include "console.h"
-#include "hooks.h"
-#include "system.h"
-#include "task.h"
-#include "tcpm/tcpm.h"
-#include "usb_common.h"
-#include "usb_mux.h"
-#include "usb_pd.h"
-#include "usb_pd_dpm.h"
-#include "usb_pd_tcpm.h"
-#include "usb_pd_timer.h"
-#include "usb_pe_sm.h"
-#include "usb_prl_sm.h"
-#include "usb_sm.h"
-#include "usb_tc_sm.h"
-#include "usbc_ocp.h"
-#include "usbc_ppc.h"
-#include "vboot.h"
-
-/*
- * USB Type-C DRP with Accessory and Try.SRC module
- * See Figure 4-16 in Release 1.4 of USB Type-C Spec.
- */
-#ifdef CONFIG_COMMON_RUNTIME
-#define CPRINTF(format, args...) cprintf(CC_USBPD, format, ## args)
-#define CPRINTS(format, args...) cprints(CC_USBPD, format, ## args)
-#else /* CONFIG_COMMON_RUNTIME */
-#define CPRINTF(format, args...)
-#define CPRINTS(format, args...)
-#endif
-
-#define CPRINTF_LX(x, format, args...) \
- do { \
- if (tc_debug_level >= x) \
- CPRINTF(format, ## args); \
- } while (0)
-#define CPRINTF_L1(format, args...) CPRINTF_LX(1, format, ## args)
-#define CPRINTF_L2(format, args...) CPRINTF_LX(2, format, ## args)
-#define CPRINTF_L3(format, args...) CPRINTF_LX(3, format, ## args)
-
-#define CPRINTS_LX(x, format, args...) \
- do { \
- if (tc_debug_level >= x) \
- CPRINTS(format, ## args); \
- } while (0)
-#define CPRINTS_L1(format, args...) CPRINTS_LX(1, format, ## args)
-#define CPRINTS_L2(format, args...) CPRINTS_LX(2, format, ## args)
-#define CPRINTS_L3(format, args...) CPRINTS_LX(3, format, ## args)
-
-/*
- * Define DEBUG_PRINT_FLAG_AND_EVENT_NAMES to print flag names when set and
- * cleared, and event names when handled by tc_event_check().
- */
-#undef DEBUG_PRINT_FLAG_AND_EVENT_NAMES
-
-#ifdef DEBUG_PRINT_FLAG_AND_EVENT_NAMES
-void print_flag(int port, int set_or_clear, int flag);
-#define TC_SET_FLAG(port, flag) \
- do { \
- print_flag(port, 1, flag); \
- atomic_or(&tc[port].flags, (flag)); \
- } while (0)
-#define TC_CLR_FLAG(port, flag) \
- do { \
- print_flag(port, 0, flag); \
- atomic_clear_bits(&tc[port].flags, (flag)); \
- } while (0)
-#else
-#define TC_SET_FLAG(port, flag) atomic_or(&tc[port].flags, (flag))
-#define TC_CLR_FLAG(port, flag) atomic_clear_bits(&tc[port].flags, (flag))
-#endif
-#define TC_CHK_FLAG(port, flag) (tc[port].flags & (flag))
-
-/* Type-C Layer Flags */
-/* Flag to note we are sourcing VCONN */
-#define TC_FLAGS_VCONN_ON BIT(0)
-/* Flag to note port partner has Rp/Rp or Rd/Rd */
-#define TC_FLAGS_TS_DTS_PARTNER BIT(1)
-/* Flag to note VBus input has never been low */
-#define TC_FLAGS_VBUS_NEVER_LOW BIT(2)
-/* Flag to note Low Power Mode transition is currently happening */
-#define TC_FLAGS_LPM_TRANSITION BIT(3)
-/* Flag to note Low Power Mode is currently on */
-#define TC_FLAGS_LPM_ENGAGED BIT(4)
-/* Flag to note CVTPD has been detected */
-#define TC_FLAGS_CTVPD_DETECTED BIT(5)
-/* Flag to note request to swap to VCONN on */
-#define TC_FLAGS_REQUEST_VC_SWAP_ON BIT(6)
-/* Flag to note request to swap to VCONN off */
-#define TC_FLAGS_REQUEST_VC_SWAP_OFF BIT(7)
-/* Flag to note request to swap VCONN is being rejected */
-#define TC_FLAGS_REJECT_VCONN_SWAP BIT(8)
-/* Flag to note request to power role swap */
-#define TC_FLAGS_REQUEST_PR_SWAP BIT(9)
-/* Flag to note request to data role swap */
-#define TC_FLAGS_REQUEST_DR_SWAP BIT(10)
-/* Flag to note request to power off sink */
-#define TC_FLAGS_POWER_OFF_SNK BIT(11)
-/* Flag to note port partner is Power Delivery capable */
-#define TC_FLAGS_PARTNER_PD_CAPABLE BIT(12)
-/* Flag to note hard reset has been requested */
-#define TC_FLAGS_HARD_RESET_REQUESTED BIT(13)
-/* Flag to note we are currently performing PR Swap */
-#define TC_FLAGS_PR_SWAP_IN_PROGRESS BIT(14)
-/* Flag to note we should check for connection */
-#define TC_FLAGS_CHECK_CONNECTION BIT(15)
-/* Flag to note request from pd_set_suspend to enter TC_DISABLED state */
-#define TC_FLAGS_REQUEST_SUSPEND BIT(16)
-/* Flag to note we are in TC_DISABLED state */
-#define TC_FLAGS_SUSPENDED BIT(17)
-/* Flag to indicate the port current limit has changed */
-#define TC_FLAGS_UPDATE_CURRENT BIT(18)
-/* Flag to indicate USB mux should be updated */
-#define TC_FLAGS_UPDATE_USB_MUX BIT(19)
-/* Flag for retimer firmware update */
-#define TC_FLAGS_USB_RETIMER_FW_UPDATE_RUN BIT(20)
-#define TC_FLAGS_USB_RETIMER_FW_UPDATE_LTD_RUN BIT(21)
-/* Flag for asynchronous call to request Error Recovery */
-#define TC_FLAGS_REQUEST_ERROR_RECOVERY BIT(22)
-
-/* For checking flag_bit_names[] array */
-#define TC_FLAGS_COUNT 23
-
-/* On disconnect, clear most of the flags. */
-#define CLR_FLAGS_ON_DISCONNECT(port) TC_CLR_FLAG(port, \
- ~(TC_FLAGS_LPM_ENGAGED | TC_FLAGS_REQUEST_SUSPEND | TC_FLAGS_SUSPENDED))
-
-/*
- * 10 ms is enough time for any TCPC transaction to complete
- *
- * This value must be below ~39.7 ms to put ANX7447 into LPM due to bug in
- * silicon (see b/77544959 and b/149761477 for more details).
- */
-#define PD_LPM_DEBOUNCE_US (10 * MSEC)
-
-/*
- * This delay is not part of the USB Type-C specification or the USB port
- * controller specification. Some TCPCs require extra time before the CC_STATUS
- * register is updated when exiting low power mode.
- *
- * This delay can be possibly shortened or removed by checking VBUS state
- * before trying to re-enter LPM.
- *
- * TODO(b/162347811): TCPMv2: Wait for debounce on Vbus and CC lines
- */
-#define PD_LPM_EXIT_DEBOUNCE_US CONFIG_USB_PD_TCPC_LPM_EXIT_DEBOUNCE
-
-/*
- * The TypeC state machine uses this bit to disable/enable PD
- * This bit corresponds to bit-0 of pd_disabled_mask
- */
-#define PD_DISABLED_NO_CONNECTION BIT(0)
-/*
- * Console and Host commands use this bit to override the
- * PD_DISABLED_NO_CONNECTION bit that was set by the TypeC
- * state machine.
- * This bit corresponds to bit-1 of pd_disabled_mask
- */
-#define PD_DISABLED_BY_POLICY BIT(1)
-
-/* Unreachable time in future */
-#define TIMER_DISABLED 0xffffffffffffffff
-
-enum ps_reset_sequence {
- PS_STATE0,
- PS_STATE1,
- PS_STATE2,
-};
-
-/* List of all TypeC-level states */
-enum usb_tc_state {
- /* Super States */
- TC_CC_OPEN,
- TC_CC_RD,
- TC_CC_RP,
- /* Normal States */
- TC_DISABLED,
- TC_ERROR_RECOVERY,
- TC_UNATTACHED_SNK,
- TC_ATTACH_WAIT_SNK,
- TC_ATTACHED_SNK,
- TC_UNATTACHED_SRC,
- TC_ATTACH_WAIT_SRC,
- TC_ATTACHED_SRC,
- TC_TRY_SRC,
- TC_TRY_WAIT_SNK,
- TC_DRP_AUTO_TOGGLE,
- TC_LOW_POWER_MODE,
- TC_CT_UNATTACHED_SNK,
- TC_CT_ATTACHED_SNK,
-
- TC_STATE_COUNT,
-};
-/* Forward declare the full list of states. This is indexed by usb_tc_state */
-static const struct usb_state tc_states[];
-
-/*
- * Remove all of the states that aren't support at link time. This allows
- * IS_ENABLED to work.
- */
-#ifndef CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE
-GEN_NOT_SUPPORTED(TC_DRP_AUTO_TOGGLE);
-#define TC_DRP_AUTO_TOGGLE TC_DRP_AUTO_TOGGLE_NOT_SUPPORTED
-#endif /* CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE */
-
-#ifndef CONFIG_USB_PD_TCPC_LOW_POWER
-GEN_NOT_SUPPORTED(TC_LOW_POWER_MODE);
-#define TC_LOW_POWER_MODE TC_LOW_POWER_MODE_NOT_SUPPORTED
-#endif /* CONFIG_USB_PD_TCPC_LOW_POWER */
-
-#ifndef CONFIG_USB_PE_SM
-GEN_NOT_SUPPORTED(TC_CT_UNATTACHED_SNK);
-#define TC_CT_UNATTACHED_SNK TC_CT_UNATTACHED_SNK_NOT_SUPPORTED
-GEN_NOT_SUPPORTED(TC_CT_ATTACHED_SNK);
-#define TC_CT_ATTACHED_SNK TC_CT_ATTACHED_SNK_NOT_SUPPORTED
-#endif /* CONFIG_USB_PE_SM */
-
-/*
- * If CONFIG_ASSERT_CCD_MODE_ON_DTS_CONNECT is not defined then
- * _GPIO_CCD_MODE_ODL is not needed. Declare as extern so IS_ENABLED will work.
- */
-#ifndef CONFIG_ASSERT_CCD_MODE_ON_DTS_CONNECT
-extern int _GPIO_CCD_MODE_ODL;
-#else
-#define _GPIO_CCD_MODE_ODL GPIO_CCD_MODE_ODL
-#endif /* CONFIG_ASSERT_CCD_MODE_ON_DTS_CONNECT */
-
-/*
- * We will use DEBUG LABELS if we will be able to print (COMMON RUNTIME)
- * and either CONFIG_USB_PD_DEBUG_LEVEL is not defined (no override) or
- * we are overriding and the level is not DISABLED.
- *
- * If we can't print or the CONFIG_USB_PD_DEBUG_LEVEL is defined to be 0
- * then the DEBUG LABELS will be removed from the build.
- */
-#if defined(CONFIG_COMMON_RUNTIME) && \
- (!defined(CONFIG_USB_PD_DEBUG_LEVEL) || \
- (CONFIG_USB_PD_DEBUG_LEVEL > 0))
-#define USB_PD_DEBUG_LABELS
-#endif
-
-/*
- * Helper Macro to determine if the machine is in state
- * TC_ATTACHED_SRC
- */
-#define IS_ATTACHED_SRC(port) (get_state_tc(port) == TC_ATTACHED_SRC)
-
-/*
- * Helper Macro to determine if the machine is in state
- * TC_ATTACHED_SNK
- */
-#define IS_ATTACHED_SNK(port) (get_state_tc(port) == TC_ATTACHED_SNK)
-
-
-/* List of human readable state names for console debugging */
-__maybe_unused static __const_data const char * const tc_state_names[] = {
-#ifdef USB_PD_DEBUG_LABELS
- [TC_DISABLED] = "Disabled",
- [TC_ERROR_RECOVERY] = "ErrorRecovery",
- [TC_UNATTACHED_SNK] = "Unattached.SNK",
- [TC_ATTACH_WAIT_SNK] = "AttachWait.SNK",
- [TC_ATTACHED_SNK] = "Attached.SNK",
- [TC_UNATTACHED_SRC] = "Unattached.SRC",
- [TC_ATTACH_WAIT_SRC] = "AttachWait.SRC",
- [TC_ATTACHED_SRC] = "Attached.SRC",
- [TC_TRY_SRC] = "Try.SRC",
- [TC_TRY_WAIT_SNK] = "TryWait.SNK",
-#ifdef CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE
- [TC_DRP_AUTO_TOGGLE] = "DRPAutoToggle",
-#endif
-#ifdef CONFIG_USB_PD_TCPC_LOW_POWER
- [TC_LOW_POWER_MODE] = "LowPowerMode",
-#endif
-#ifdef CONFIG_USB_PE_SM
- [TC_CT_UNATTACHED_SNK] = "CTUnattached.SNK",
- [TC_CT_ATTACHED_SNK] = "CTAttached.SNK",
-#endif
- /* Super States */
- [TC_CC_OPEN] = "SS:CC_OPEN",
- [TC_CC_RD] = "SS:CC_RD",
- [TC_CC_RP] = "SS:CC_RP",
-
- [TC_STATE_COUNT] = "",
-#endif
-};
-
-/* Debug log level - higher number == more log */
-#ifdef CONFIG_USB_PD_DEBUG_LEVEL
-static const enum debug_level tc_debug_level = CONFIG_USB_PD_DEBUG_LEVEL;
-#else
-static enum debug_level tc_debug_level = DEBUG_LEVEL_1;
-#endif
-
-#ifdef DEBUG_PRINT_FLAG_AND_EVENT_NAMES
-struct bit_name {
- int value;
- const char *name;
-};
-
-static struct bit_name flag_bit_names[] = {
- { TC_FLAGS_VCONN_ON, "VCONN_ON" },
- { TC_FLAGS_TS_DTS_PARTNER, "TS_DTS_PARTNER" },
- { TC_FLAGS_VBUS_NEVER_LOW, "VBUS_NEVER_LOW" },
- { TC_FLAGS_LPM_TRANSITION, "LPM_TRANSITION" },
- { TC_FLAGS_LPM_ENGAGED, "LPM_ENGAGED" },
- { TC_FLAGS_CTVPD_DETECTED, "CTVPD_DETECTED" },
- { TC_FLAGS_REQUEST_VC_SWAP_ON, "REQUEST_VC_SWAP_ON" },
- { TC_FLAGS_REQUEST_VC_SWAP_OFF, "REQUEST_VC_SWAP_OFF" },
- { TC_FLAGS_REJECT_VCONN_SWAP, "REJECT_VCONN_SWAP" },
- { TC_FLAGS_REQUEST_PR_SWAP, "REQUEST_PR_SWAP" },
- { TC_FLAGS_REQUEST_DR_SWAP, "REQUEST_DR_SWAP" },
- { TC_FLAGS_POWER_OFF_SNK, "POWER_OFF_SNK" },
- { TC_FLAGS_PARTNER_PD_CAPABLE, "PARTNER_PD_CAPABLE" },
- { TC_FLAGS_HARD_RESET_REQUESTED, "HARD_RESET_REQUESTED" },
- { TC_FLAGS_PR_SWAP_IN_PROGRESS, "PR_SWAP_IN_PROGRESS" },
- { TC_FLAGS_CHECK_CONNECTION, "CHECK_CONNECTION" },
- { TC_FLAGS_REQUEST_SUSPEND, "REQUEST_SUSPEND" },
- { TC_FLAGS_SUSPENDED, "SUSPENDED" },
- { TC_FLAGS_UPDATE_CURRENT, "UPDATE_CURRENT" },
- { TC_FLAGS_UPDATE_USB_MUX, "UPDATE_USB_MUX" },
- { TC_FLAGS_USB_RETIMER_FW_UPDATE_RUN,
- "USB_RETIMER_FW_UPDATE_RUN" },
- { TC_FLAGS_USB_RETIMER_FW_UPDATE_LTD_RUN,
- "USB_RETIMER_FW_UPDATE_LTD_RUN" },
- { TC_FLAGS_REQUEST_ERROR_RECOVERY, "REQUEST_ERROR_RECOCVERY"},
-};
-BUILD_ASSERT(ARRAY_SIZE(flag_bit_names) == TC_FLAGS_COUNT);
-
-static struct bit_name event_bit_names[] = {
- { TASK_EVENT_SYSJUMP_READY, "SYSJUMP_READY" },
- { TASK_EVENT_IPC_READY, "IPC_READY" },
- { TASK_EVENT_PD_AWAKE, "PD_AWAKE" },
- { TASK_EVENT_PECI_DONE, "PECI_DONE" },
- { TASK_EVENT_I2C_IDLE, "I2C_IDLE" },
-#ifdef TASK_EVENT_PS2_DONE
- { TASK_EVENT_PS2_DONE, "PS2_DONE" },
-#endif
- { TASK_EVENT_DMA_TC, "DMA_TC" },
- { TASK_EVENT_ADC_DONE, "ADC_DONE" },
- { TASK_EVENT_RESET_DONE, "RESET_DONE" },
- { TASK_EVENT_WAKE, "WAKE" },
- { TASK_EVENT_MUTEX, "MUTEX" },
- { TASK_EVENT_TIMER, "TIMER" },
- { PD_EVENT_TX, "TX" },
- { PD_EVENT_CC, "CC" },
- { PD_EVENT_TCPC_RESET, "TCPC_RESET" },
- { PD_EVENT_UPDATE_DUAL_ROLE, "UPDATE_DUAL_ROLE" },
- { PD_EVENT_DEVICE_ACCESSED, "DEVICE_ACCESSED" },
- { PD_EVENT_POWER_STATE_CHANGE, "POWER_STATE_CHANGE" },
- { PD_EVENT_SEND_HARD_RESET, "SEND_HARD_RESET" },
- { PD_EVENT_SYSJUMP, "SYSJUMP" },
-};
-
-static void print_bits(int port, const char *desc, int value,
- struct bit_name *names, int names_size)
-{
- int i;
-
- CPRINTF("C%d: %s 0x%x : ", port, desc, value);
- for (i = 0; i < names_size; i++) {
- if (value & names[i].value)
- CPRINTF("%s | ", names[i].name);
- value &= ~names[i].value;
- }
- if (value != 0)
- CPRINTF("0x%x", value);
- CPRINTF("\n");
-}
-
-void print_flag(int port, int set_or_clear, int flag)
-{
- print_bits(port, set_or_clear ? "Set" : "Clr", flag, flag_bit_names,
- ARRAY_SIZE(flag_bit_names));
-}
-#endif /* DEBUG_PRINT_FLAG_AND_EVENT_NAMES */
-
-#ifndef CONFIG_USB_PD_TRY_SRC
-extern int TC_TRY_SRC_UNDEFINED;
-extern int TC_TRY_WAIT_SNK_UNDEFINED;
-#define TC_TRY_SRC TC_TRY_SRC_UNDEFINED
-#define TC_TRY_WAIT_SNK TC_TRY_WAIT_SNK_UNDEFINED
-#endif
-
-static struct type_c {
- /* state machine context */
- struct sm_ctx ctx;
- /* current port power role (SOURCE or SINK) */
- enum pd_power_role power_role;
- /* current port data role (DFP or UFP) */
- enum pd_data_role data_role;
- /*
- * Higher-level power deliver state machines are enabled if false,
- * else they're disabled if bits PD_DISABLED_NO_CONNECTION or
- * PD_DISABLED_BY_POLICY are set.
- */
- uint32_t pd_disabled_mask;
- /*
- * Timer for handling TOGGLE_OFF/FORCE_SINK mode when auto-toggle
- * enabled. See drp_auto_toggle_next_state() for details.
- */
- uint64_t drp_sink_time;
-#ifdef CONFIG_USB_PE_SM
- /* Power supply reset sequence during a hard reset */
- enum ps_reset_sequence ps_reset_state;
-#endif
- /* Port polarity */
- enum tcpc_cc_polarity polarity;
- /* port flags, see TC_FLAGS_* */
- uint32_t flags;
- /* The cc state */
- enum pd_cc_states cc_state;
- /* Tasks to notify after TCPC has been reset */
- int tasks_waiting_on_reset;
- /* Tasks preventing TCPC from entering low power mode */
- int tasks_preventing_lpm;
- /* Voltage on CC pin */
- enum tcpc_cc_voltage_status cc_voltage;
- /* Type-C current */
- typec_current_t typec_curr;
- /* Type-C current change */
- typec_current_t typec_curr_change;
-
- /* Selected TCPC CC/Rp values */
- enum tcpc_cc_pull select_cc_pull;
- enum tcpc_rp_value select_current_limit_rp;
- enum tcpc_rp_value select_collision_rp;
-} tc[CONFIG_USB_PD_PORT_MAX_COUNT];
-
-/* Port dual-role state */
-static volatile __maybe_unused
-enum pd_dual_role_states drp_state[CONFIG_USB_PD_PORT_MAX_COUNT] = {
- [0 ... (CONFIG_USB_PD_PORT_MAX_COUNT - 1)] =
- CONFIG_USB_PD_INITIAL_DRP_STATE};
-
-static void set_vconn(int port, int enable);
-
-/* Forward declare common, private functions */
-static __maybe_unused int reset_device_and_notify(int port);
-static __maybe_unused void check_drp_connection(const int port);
-static void sink_power_sub_states(int port);
-static void set_ccd_mode(int port, bool enable);
-
-__maybe_unused static void handle_new_power_state(int port);
-
-static void pd_update_dual_role_config(int port);
-
-/* Forward declare common, private functions */
-static void set_state_tc(const int port, const enum usb_tc_state new_state);
-test_export_static enum usb_tc_state get_state_tc(const int port);
-
-/* Enable variable for Try.SRC states */
-static uint32_t pd_try_src;
-static volatile enum try_src_override_t pd_try_src_override;
-static void pd_update_try_source(void);
-
-static void sink_stop_drawing_current(int port);
-
-__maybe_unused static bool is_try_src_enabled(int port)
-{
- if (!IS_ENABLED(CONFIG_USB_PD_TRY_SRC))
- assert(0);
-
- return ((pd_try_src_override == TRY_SRC_OVERRIDE_ON) ||
- (pd_try_src_override == TRY_SRC_NO_OVERRIDE && pd_try_src));
-}
-
-/*
- * Public Functions
- *
- * NOTE: Functions prefixed with pd_ are defined in usb_pd.h
- * Functions prefixed with tc_ are defined int usb_tc_sm.h
- */
-
-#ifndef CONFIG_USB_PRL_SM
-
-/*
- * These pd_ functions are implemented in common/usb_prl_sm.c
- */
-
-void pd_transmit_complete(int port, int status)
-{
- /* DO NOTHING */
-}
-
-void pd_execute_hard_reset(int port)
-{
- /* DO NOTHING */
-}
-
-__overridable void pd_set_vbus_discharge(int port, int enable)
-{
- /* DO NOTHING */
-}
-
-#endif /* !CONFIG_USB_PRL_SM */
-
-#ifndef CONFIG_USB_PE_SM
-
-/*
- * These pd_ functions are implemented in the PE layer
- */
-const uint32_t * const pd_get_src_caps(int port)
-{
- return NULL;
-}
-
-uint8_t pd_get_src_cap_cnt(int port)
-{
- return 0;
-}
-
-const uint32_t * const pd_get_snk_caps(int port)
-{
- return NULL;
-}
-
-uint8_t pd_get_snk_cap_cnt(int port)
-{
- return 0;
-}
-
-void pd_set_src_caps(int port, int cnt, uint32_t *src_caps)
-{
-}
-
-int pd_get_rev(int port, enum tcpci_msg_type type)
-{
- return PD_REV30;
-}
-
-#endif /* !CONFIG_USB_PR_SM */
-
-#ifndef HAS_TASK_CHIPSET
-__overridable enum pd_dual_role_states board_tc_get_initial_drp_mode(int port)
-{
- /*
- * DRP state is typically adjusted as the chipset state is changed. For
- * projects which don't include an AP this function can be used for to
- * specify what the starting DRP state should be.
- */
- return PD_DRP_FORCE_SINK;
-}
-#endif
-
-void pd_update_contract(int port)
-{
- if (IS_ENABLED(CONFIG_USB_PE_SM)) {
- if (IS_ATTACHED_SRC(port))
- pd_dpm_request(port, DPM_REQUEST_SRC_CAP_CHANGE);
- }
-}
-
-void pd_request_source_voltage(int port, int mv)
-{
- if (IS_ENABLED(CONFIG_USB_PE_SM)) {
- pd_set_max_voltage(mv);
-
- if (IS_ATTACHED_SNK(port))
- pd_dpm_request(port, DPM_REQUEST_NEW_POWER_LEVEL);
- else
- pd_dpm_request(port, DPM_REQUEST_PR_SWAP);
-
- task_wake(PD_PORT_TO_TASK_ID(port));
- }
-}
-
-void pd_set_external_voltage_limit(int port, int mv)
-{
- if (IS_ENABLED(CONFIG_USB_PE_SM)) {
- pd_set_max_voltage(mv);
-
- /* Must be in Attached.SNK when this function is called */
- if (get_state_tc(port) == TC_ATTACHED_SNK)
- pd_dpm_request(port, DPM_REQUEST_NEW_POWER_LEVEL);
-
- task_wake(PD_PORT_TO_TASK_ID(port));
- }
-}
-
-void pd_set_new_power_request(int port)
-{
- if (IS_ENABLED(CONFIG_USB_PE_SM)) {
- /* Must be in Attached.SNK when this function is called */
- if (get_state_tc(port) == TC_ATTACHED_SNK)
- pd_dpm_request(port, DPM_REQUEST_NEW_POWER_LEVEL);
- }
-}
-
-void tc_request_power_swap(int port)
-{
- if (IS_ENABLED(CONFIG_USB_PE_SM)) {
- /*
- * Must be in Attached.SRC or Attached.SNK
- */
- if (IS_ATTACHED_SRC(port) || IS_ATTACHED_SNK(port)) {
- TC_SET_FLAG(port, TC_FLAGS_PR_SWAP_IN_PROGRESS);
-
- /* Let tc_pr_swap_complete start the Vbus debounce */
- pd_timer_disable(port, TC_TIMER_VBUS_DEBOUNCE);
- }
-
- /*
- * TCPCI Rev2 V1.1 4.4.5.4.4
- * Disconnect Detection by the Sink TCPC during a Connection
- *
- * Upon reception of or prior to transmitting a PR_Swap
- * message, the TCPM acting as a Sink shall disable the Sink
- * disconnect detection to retain PD message delivery when
- * Power Role Swap happens. Disable AutoDischargeDisconnect.
- */
- if (IS_ATTACHED_SNK(port))
- tcpm_enable_auto_discharge_disconnect(port, 0);
- }
-}
-
-/* Flag to indicate PD comm is disabled on init */
-static int pd_disabled_on_init;
-
-static void pd_update_pd_comm(void)
-{
- int i;
-
- /*
- * Some batteries take much longer time to report its SOC.
- * The init function disabled PD comm on startup. Need this
- * hook to enable PD comm when the battery level is enough.
- */
- if (pd_disabled_on_init && pd_is_battery_capable()) {
- for (i = 0; i < CONFIG_USB_PD_PORT_MAX_COUNT; i++)
- pd_comm_enable(i, 1);
- pd_disabled_on_init = 0;
- }
-}
-DECLARE_HOOK(HOOK_BATTERY_SOC_CHANGE, pd_update_pd_comm, HOOK_PRIO_DEFAULT);
-
-static bool pd_comm_allowed_by_policy(void)
-{
- if (system_is_in_rw())
- return true;
-
- if (vboot_allow_usb_pd())
- return true;
-
- /*
- * If enable PD in RO on a non-EFS2 device, a hard reset will be issued
- * when sysjump to RW that makes the device brownout on the dead-battery
- * case. Disable PD for this special case as a workaround.
- */
- if (!system_is_locked()) {
- if (IS_ENABLED(CONFIG_VBOOT_EFS2))
- return true;
-
- if (pd_is_battery_capable())
- return true;
-
- pd_disabled_on_init = 1;
- }
-
- return false;
-}
-
-static void tc_policy_pd_enable(int port, int en)
-{
- if (en)
- atomic_clear_bits(&tc[port].pd_disabled_mask,
- PD_DISABLED_BY_POLICY);
- else
- atomic_or(&tc[port].pd_disabled_mask, PD_DISABLED_BY_POLICY);
-
- CPRINTS("C%d: PD comm policy %sabled", port, en ? "en" : "dis");
-}
-
-static void tc_enable_pd(int port, int en)
-{
- if (en)
- atomic_clear_bits(&tc[port].pd_disabled_mask,
- PD_DISABLED_NO_CONNECTION);
- else
- atomic_or(&tc[port].pd_disabled_mask,
- PD_DISABLED_NO_CONNECTION);
-}
-
-__maybe_unused static void tc_enable_try_src(int en)
-{
- if (!IS_ENABLED(CONFIG_USB_PD_TRY_SRC))
- assert(0);
-
- if (en)
- atomic_or(&pd_try_src, 1);
- else
- atomic_clear_bits(&pd_try_src, 1);
-}
-
-/*
- * Exit all modes due to a detach event
- * Note: this skips the ExitMode VDM steps in the PE because it is assumed the
- * partner is not present to receive them, and the PE will no longer be running.
- */
-static void tc_set_modes_exit(int port)
-{
- if (IS_ENABLED(CONFIG_USB_PE_SM) &&
- IS_ENABLED(CONFIG_USB_PD_ALT_MODE_DFP)) {
- pd_dfp_exit_mode(port, TCPCI_MSG_SOP, 0, 0);
- pd_dfp_exit_mode(port, TCPCI_MSG_SOP_PRIME, 0, 0);
- pd_dfp_exit_mode(port, TCPCI_MSG_SOP_PRIME_PRIME, 0, 0);
- }
-}
-
-static void tc_detached(int port)
-{
- TC_CLR_FLAG(port, TC_FLAGS_TS_DTS_PARTNER);
- hook_notify(HOOK_USB_PD_DISCONNECT);
- tc_pd_connection(port, 0);
- tcpm_debug_accessory(port, 0);
- set_ccd_mode(port, 0);
- tc_set_modes_exit(port);
- if (IS_ENABLED(CONFIG_USB_PRL_SM))
- prl_set_default_pd_revision(port);
-
- /* Clear any mux connection on detach */
- if (IS_ENABLED(CONFIG_USBC_SS_MUX))
- usb_mux_set(port, USB_PD_MUX_NONE,
- USB_SWITCH_DISCONNECT, tc[port].polarity);
-}
-
-static inline void pd_set_dual_role_and_event(int port,
- enum pd_dual_role_states state, uint32_t event)
-{
- drp_state[port] = state;
-
- if (IS_ENABLED(CONFIG_USB_PD_TRY_SRC))
- pd_update_try_source();
-
- if (event != 0)
- task_set_event(PD_PORT_TO_TASK_ID(port), event);
-}
-
-void pd_set_dual_role(int port, enum pd_dual_role_states state)
-{
- pd_set_dual_role_and_event(port, state, PD_EVENT_UPDATE_DUAL_ROLE);
-}
-
-int pd_comm_is_enabled(int port)
-{
- return tc_get_pd_enabled(port);
-}
-
-void pd_request_data_swap(int port)
-{
- /*
- * Must be in Attached.SRC, Attached.SNK, DebugAccessory.SNK,
- * or UnorientedDebugAccessory.SRC when this function
- * is called
- */
- if (IS_ATTACHED_SRC(port) || IS_ATTACHED_SNK(port)) {
- TC_SET_FLAG(port, TC_FLAGS_REQUEST_DR_SWAP);
- task_wake(PD_PORT_TO_TASK_ID(port));
- }
-}
-
-/* Return true if partner port is known to be PD capable. */
-bool pd_capable(int port)
-{
- return !!TC_CHK_FLAG(port, TC_FLAGS_PARTNER_PD_CAPABLE);
-}
-
-/*
- * Return true if we transition through Unattached.SNK, but we're still waiting
- * to receive source caps from the partner. This indicates that the PD
- * capabilities are not yet known.
- */
-bool pd_waiting_on_partner_src_caps(int port)
-{
- return !pd_get_src_cap_cnt(port);
-}
-
-enum pd_dual_role_states pd_get_dual_role(int port)
-{
- return drp_state[port];
-}
-
-#ifdef CONFIG_CMD_PD_DEV_DUMP_INFO
-static inline void pd_dev_dump_info(uint16_t dev_id, uint32_t *hash)
-{
- int j;
-
- ccprintf("DevId:%d.%d Hash:", HW_DEV_ID_MAJ(dev_id),
- HW_DEV_ID_MIN(dev_id));
- for (j = 0; j < PD_RW_HASH_SIZE / 4; j++)
- ccprintf(" %08x ", hash[j]);
- ccprintf("\n");
-}
-#endif /* CONFIG_CMD_PD_DEV_DUMP_INFO */
-
-const char *tc_get_current_state(int port)
-{
- if (IS_ENABLED(USB_PD_DEBUG_LABELS))
- return tc_state_names[get_state_tc(port)];
- else
- return "";
-}
-
-uint32_t tc_get_flags(int port)
-{
- return tc[port].flags;
-}
-
-int tc_is_attached_src(int port)
-{
- return IS_ATTACHED_SRC(port);
-}
-
-int tc_is_attached_snk(int port)
-{
- return IS_ATTACHED_SNK(port);
-}
-
-void tc_pd_connection(int port, int en)
-{
- if (en) {
- bool new_pd_capable = false;
-
- if (!TC_CHK_FLAG(port, TC_FLAGS_PARTNER_PD_CAPABLE))
- new_pd_capable = true;
-
- TC_SET_FLAG(port, TC_FLAGS_PARTNER_PD_CAPABLE);
- /* If a PD device is attached then disable deep sleep */
- if (IS_ENABLED(CONFIG_LOW_POWER_IDLE) &&
- !IS_ENABLED(CONFIG_USB_PD_TCPC_ON_CHIP)) {
- disable_sleep(SLEEP_MASK_USB_PD);
- }
-
- /*
- * Update the mux state, only when the PD capable flag
- * transitions from 0 to 1. This ensures that PD charger
- * devices, without data capability are not marked as having
- * USB.
- */
- if (new_pd_capable)
- set_usb_mux_with_current_data_role(port);
- } else {
- TC_CLR_FLAG(port, TC_FLAGS_PARTNER_PD_CAPABLE);
- /* If a PD device isn't attached then enable deep sleep */
- if (IS_ENABLED(CONFIG_LOW_POWER_IDLE) &&
- !IS_ENABLED(CONFIG_USB_PD_TCPC_ON_CHIP)) {
- int i;
-
- /* If all ports are not connected, allow the sleep */
- for (i = 0; i < board_get_usb_pd_port_count(); i++) {
- if (pd_capable(i))
- break;
- }
- if (i == board_get_usb_pd_port_count())
- enable_sleep(SLEEP_MASK_USB_PD);
- }
- }
-}
-
-void tc_ctvpd_detected(int port)
-{
- TC_SET_FLAG(port, TC_FLAGS_CTVPD_DETECTED);
-}
-
-void pd_try_vconn_src(int port)
-{
- set_vconn(port, 1);
-}
-
-int tc_check_vconn_swap(int port)
-{
- if (IS_ENABLED(CONFIG_USBC_VCONN)) {
- if (TC_CHK_FLAG(port, TC_FLAGS_REJECT_VCONN_SWAP))
- return 0;
-
- return pd_check_vconn_swap(port);
- } else
- return 0;
-}
-
-void tc_pr_swap_complete(int port, bool success)
-{
- if (IS_ATTACHED_SNK(port)) {
- /*
- * Give the ADCs in the TCPC or PPC time to react following
- * a PS_RDY message received during a SRC to SNK swap.
- * Note: This is empirically determined, not strictly
- * part of the USB PD spec.
- * Note: Swap in progress should not be cleared until the
- * debounce is completed.
- */
- pd_timer_enable(port, TC_TIMER_VBUS_DEBOUNCE, PD_T_DEBOUNCE);
- } else {
- /* PR Swap is no longer in progress */
- TC_CLR_FLAG(port, TC_FLAGS_PR_SWAP_IN_PROGRESS);
-
- /*
- * AutoDischargeDisconnect was turned off near the SNK->SRC
- * PR-Swap message. If the swap was a success, Vbus should be
- * valid, so re-enable AutoDischargeDisconnect
- */
- if (success)
- tcpm_enable_auto_discharge_disconnect(port, 1);
- }
-}
-
-void tc_prs_src_snk_assert_rd(int port)
-{
- /*
- * Must be in Attached.SRC or UnorientedDebugAccessory.SRC
- * when this function is called
- */
- if (IS_ATTACHED_SRC(port)) {
- /*
- * Transition to Attached.SNK to
- * DebugAccessory.SNK assert Rd
- */
- TC_SET_FLAG(port, TC_FLAGS_REQUEST_PR_SWAP);
- task_wake(PD_PORT_TO_TASK_ID(port));
- }
-}
-
-void tc_prs_snk_src_assert_rp(int port)
-{
- /*
- * Must be in Attached.SNK or DebugAccessory.SNK
- * when this function is called
- */
- if (IS_ATTACHED_SNK(port)) {
- /*
- * Transition to Attached.SRC or
- * UnorientedDebugAccessory.SRC to assert Rp
- */
- TC_SET_FLAG(port, TC_FLAGS_REQUEST_PR_SWAP);
- task_wake(PD_PORT_TO_TASK_ID(port));
- }
-}
-
-/*
- * Hard Reset is being requested. This should not allow a TC connection
- * to go to an unattached state until the connection is recovered from
- * the hard reset. It is possible for a Hard Reset to cause a timeout
- * in trying to recover and an additional Hard Reset would be issued.
- * During this entire process it is important that the TC is not allowed
- * to go to an unattached state.
- *
- * Type-C Spec Rev 2.0 section 4.5.2.2.5.2
- * Exiting from Attached.SNK State
- * A port that is not a V CONN-Powered USB Device and is not in the
- * process of a USB PD PR_Swap or a USB PD Hard Reset or a USB PD
- * FR_Swap shall transition to Unattached.SNK
- */
-void tc_hard_reset_request(int port)
-{
- TC_SET_FLAG(port, TC_FLAGS_HARD_RESET_REQUESTED);
- task_wake(PD_PORT_TO_TASK_ID(port));
-}
-
-void tc_try_src_override(enum try_src_override_t ov)
-{
- if (!IS_ENABLED(CONFIG_USB_PD_TRY_SRC))
- assert(0);
-
- if (IS_ENABLED(CONFIG_USB_PD_TRY_SRC)) {
- switch (ov) {
- case TRY_SRC_OVERRIDE_OFF: /* 0 */
- pd_try_src_override = TRY_SRC_OVERRIDE_OFF;
- break;
- case TRY_SRC_OVERRIDE_ON: /* 1 */
- pd_try_src_override = TRY_SRC_OVERRIDE_ON;
- break;
- default:
- pd_try_src_override = TRY_SRC_NO_OVERRIDE;
- }
- }
-}
-
-enum try_src_override_t tc_get_try_src_override(void)
-{
- if (!IS_ENABLED(CONFIG_USB_PD_TRY_SRC))
- assert(0);
-
- return pd_try_src_override;
-}
-
-void tc_snk_power_off(int port)
-{
- if (IS_ATTACHED_SNK(port)) {
- TC_SET_FLAG(port, TC_FLAGS_POWER_OFF_SNK);
- sink_stop_drawing_current(port);
- }
-}
-
-int tc_src_power_on(int port)
-{
- /*
- * Check our OC event counter. If we've exceeded our threshold, then
- * let's latch our source path off to prevent continuous cycling. When
- * the PD state machine detects a disconnection on the CC lines, we will
- * reset our OC event counter.
- */
- if (IS_ENABLED(CONFIG_USBC_OCP) && usbc_ocp_is_port_latched_off(port))
- return EC_ERROR_ACCESS_DENIED;
-
- if (IS_ATTACHED_SRC(port))
- return pd_set_power_supply_ready(port);
-
- return 0;
-}
-
-void tc_src_power_off(int port)
-{
- /* Remove VBUS */
- pd_power_supply_reset(port);
-
- if (IS_ENABLED(CONFIG_CHARGE_MANAGER))
- charge_manager_set_ceil(port, CEIL_REQUESTOR_PD,
- CHARGE_CEIL_NONE);
-}
-
-/* Set what role the partner is right now, for the PPC and OCP module */
-static void tc_set_partner_role(int port, enum ppc_device_role role)
-{
- if (IS_ENABLED(CONFIG_USBC_PPC))
- ppc_dev_is_connected(port, role);
-
- if (IS_ENABLED(CONFIG_USBC_OCP)) {
- usbc_ocp_snk_is_connected(port, role == PPC_DEV_SNK);
- /*
- * Clear the overcurrent event counter
- * since we've detected a disconnect.
- */
- if (role == PPC_DEV_DISCONNECTED)
- usbc_ocp_clear_event_counter(port);
- }
-}
-
-/*
- * Depending on the load on the processor and the tasks running
- * it can take a while for the task associated with this port
- * to run. So build in 1ms delays, for up to 300ms, to wait for
- * the suspend to actually happen.
- */
-#define SUSPEND_SLEEP_DELAY 1
-#define SUSPEND_SLEEP_RETRIES 300
-
-void pd_set_suspend(int port, int suspend)
-{
- if (pd_is_port_enabled(port) == !suspend)
- return;
-
- /* Track if we are suspended or not */
- if (suspend) {
- int wait = 0;
-
- TC_SET_FLAG(port, TC_FLAGS_REQUEST_SUSPEND);
-
- /*
- * Avoid deadlock when running from task
- * which we are going to suspend
- */
- if (PD_PORT_TO_TASK_ID(port) == task_get_current())
- return;
-
- task_wake(PD_PORT_TO_TASK_ID(port));
-
- /* Sleep this task if we are not suspended */
- while (pd_is_port_enabled(port)) {
- if (++wait > SUSPEND_SLEEP_RETRIES) {
- CPRINTS("C%d: NOT SUSPENDED after %dms",
- port, wait * SUSPEND_SLEEP_DELAY);
- return;
- }
- msleep(SUSPEND_SLEEP_DELAY);
- }
- } else {
- TC_CLR_FLAG(port, TC_FLAGS_REQUEST_SUSPEND);
- task_wake(PD_PORT_TO_TASK_ID(port));
- }
-}
-
-void pd_set_error_recovery(int port)
-{
- TC_SET_FLAG(port, TC_FLAGS_REQUEST_ERROR_RECOVERY);
-}
-
-int pd_is_port_enabled(int port)
-{
- /*
- * Checking get_state_tc(port) from another task isn't safe since it
- * can return TC_DISABLED before tc_cc_open_entry and tc_disabled_entry
- * are complete. So check TC_FLAGS_SUSPENDED instead.
- */
- return !TC_CHK_FLAG(port, TC_FLAGS_SUSPENDED);
-}
-
-int pd_fetch_acc_log_entry(int port)
-{
- if (IS_ENABLED(CONFIG_USB_PE_SM))
- pd_send_vdm(port, USB_VID_GOOGLE, VDO_CMD_GET_LOG, NULL, 0);
-
- return EC_RES_SUCCESS;
-}
-
-enum tcpc_cc_polarity pd_get_polarity(int port)
-{
- return tc[port].polarity;
-}
-
-enum pd_data_role pd_get_data_role(int port)
-{
- return tc[port].data_role;
-}
-
-enum pd_power_role pd_get_power_role(int port)
-{
- return tc[port].power_role;
-}
-
-enum pd_cc_states pd_get_task_cc_state(int port)
-{
- return tc[port].cc_state;
-}
-
-uint8_t pd_get_task_state(int port)
-{
- return get_state_tc(port);
-}
-
-bool pd_get_vconn_state(int port)
-{
- return !!TC_CHK_FLAG(port, TC_FLAGS_VCONN_ON);
-}
-
-const char *pd_get_task_state_name(int port)
-{
- return tc_get_current_state(port);
-}
-
-void pd_vbus_low(int port)
-{
- TC_CLR_FLAG(port, TC_FLAGS_VBUS_NEVER_LOW);
-}
-
-int pd_is_connected(int port)
-{
- return (IS_ATTACHED_SRC(port) ||
- (IS_ENABLED(CONFIG_USB_PE_SM) &&
- ((get_state_tc(port) == TC_CT_UNATTACHED_SNK) ||
- (get_state_tc(port) == TC_CT_ATTACHED_SNK))) ||
- IS_ATTACHED_SNK(port));
-}
-
-bool pd_is_disconnected(int port)
-{
- return !pd_is_connected(port);
-}
-
-/*
- * PD functions which query our fixed PDO flags. Both the source and sink
- * capabilities can present these values, and they should match between the two
- * for compliant partners.
- */
-static bool pd_check_fixed_flag(int port, uint32_t flag)
-{
- uint32_t fixed_pdo;
-
- if (pd_get_src_cap_cnt(port) != 0)
- fixed_pdo = *pd_get_src_caps(port);
- else if (pd_get_snk_cap_cnt(port) != 0)
- fixed_pdo = *pd_get_snk_caps(port);
- else
- return false;
-
- /*
- * Error check that first PDO is fixed, as 6.4.1 Capabilities requires
- * in the Power Delivery Specification.
- * "The vSafe5V Fixed Supply Object Shall always be the first object"
- */
- if ((fixed_pdo & PDO_TYPE_MASK) != PDO_TYPE_FIXED)
- return false;
-
- return fixed_pdo & flag;
-}
-
-bool pd_get_partner_data_swap_capable(int port)
-{
- return pd_check_fixed_flag(port, PDO_FIXED_DATA_SWAP);
-}
-
-bool pd_get_partner_usb_comm_capable(int port)
-{
- return pd_check_fixed_flag(port, PDO_FIXED_COMM_CAP);
-}
-
-bool pd_get_partner_dual_role_power(int port)
-{
- return pd_check_fixed_flag(port, PDO_FIXED_DUAL_ROLE);
-}
-
-bool pd_get_partner_unconstr_power(int port)
-{
- return pd_check_fixed_flag(port, PDO_FIXED_UNCONSTRAINED);
-}
-
-static void bc12_role_change_handler(int port, enum pd_data_role prev_data_role,
- enum pd_data_role data_role)
-{
- int event = 0;
- int task_id = USB_CHG_PORT_TO_TASK_ID(port);
- bool role_changed = (data_role != prev_data_role);
-
- if (!IS_ENABLED(CONFIG_BC12_DETECT_DATA_ROLE_TRIGGER))
- return;
-
- /* Get the data role of our device */
- switch (data_role) {
- case PD_ROLE_UFP:
- /* Only trigger BC12 detection on a role change */
- if (role_changed)
- event = USB_CHG_EVENT_DR_UFP;
- break;
- case PD_ROLE_DFP:
- /* Only trigger BC12 host mode on a role change */
- if (role_changed)
- event = USB_CHG_EVENT_DR_DFP;
- break;
- case PD_ROLE_DISCONNECTED:
- event = USB_CHG_EVENT_CC_OPEN;
- break;
- default:
- return;
- }
-
- if (event)
- task_set_event(task_id, event);
-}
-
-/*
- * TCPC CC/Rp management
- */
-static void typec_select_pull(int port, enum tcpc_cc_pull pull)
-{
- tc[port].select_cc_pull = pull;
-}
-void typec_select_src_current_limit_rp(int port, enum tcpc_rp_value rp)
-{
- tc[port].select_current_limit_rp = rp;
- if (IS_ATTACHED_SRC(port))
- TC_SET_FLAG(port, TC_FLAGS_UPDATE_CURRENT);
-}
-__overridable int typec_get_default_current_limit_rp(int port)
-{
- return CONFIG_USB_PD_PULLUP;
-}
-void typec_select_src_collision_rp(int port, enum tcpc_rp_value rp)
-{
- tc[port].select_collision_rp = rp;
-}
-static enum tcpc_rp_value typec_get_active_select_rp(int port)
-{
- /* Explicit contract will use the collision Rp */
- if (IS_ENABLED(CONFIG_USB_PD_REV30) &&
- pe_is_explicit_contract(port))
- return tc[port].select_collision_rp;
- return tc[port].select_current_limit_rp;
-}
-int typec_update_cc(int port)
-{
- int rv;
- enum tcpc_cc_pull pull = tc[port].select_cc_pull;
- enum tcpc_rp_value rp = typec_get_active_select_rp(port);
-
- rv = tcpm_select_rp_value(port, rp);
- if (rv)
- return rv;
-
- return tcpm_set_cc(port, pull);
-}
-
-#ifdef CONFIG_USB_PE_SM
-/*
- * This function performs a source hard reset. It should be called
- * repeatedly until a true value is returned, signaling that the
- * source hard reset is complete. A false value is returned otherwise.
- */
-static bool tc_perform_src_hard_reset(int port)
-{
- switch (tc[port].ps_reset_state) {
- case PS_STATE0:
- /* Remove VBUS */
- tc_src_power_off(port);
-
- /* Turn off VCONN */
- set_vconn(port, 0);
-
- /* Set role to DFP */
- tc_set_data_role(port, PD_ROLE_DFP);
-
- tc[port].ps_reset_state = PS_STATE1;
- pd_timer_enable(port, TC_TIMER_TIMEOUT, PD_T_SRC_RECOVER);
- return false;
- case PS_STATE1:
- /* Enable VBUS */
- tc_src_power_on(port);
-
- /* Update the Rp Value */
- typec_update_cc(port);
-
- /* Turn off VCONN */
- set_vconn(port, 1);
-
- tc[port].ps_reset_state = PS_STATE2;
- pd_timer_enable(port, TC_TIMER_TIMEOUT,
- PD_POWER_SUPPLY_TURN_ON_DELAY);
- return false;
- case PS_STATE2:
- /* Tell Policy Engine Hard Reset is complete */
- pe_ps_reset_complete(port);
-
- tc[port].ps_reset_state = PS_STATE0;
- return true;
- }
-
- /*
- * This return is added to appease the compiler. It should
- * never be reached because the switch handles all possible
- * cases of the enum ps_reset_sequence type.
- */
- return true;
-}
-
-/*
- * Wait for recovery after a hard reset. Call repeatedly until true is
- * returned, signaling that the hard reset is complete.
- */
-static bool tc_perform_snk_hard_reset(int port)
-{
- switch (tc[port].ps_reset_state) {
- case PS_STATE0:
- /* Hard reset sets us back to default data role */
- tc_set_data_role(port, PD_ROLE_UFP);
-
- /*
- * When VCONN is supported, the Hard Reset Shall cause
- * the Port with the Rd resistor asserted to turn off
- * VCONN.
- */
- if (IS_ENABLED(CONFIG_USBC_VCONN) &&
- TC_CHK_FLAG(port, TC_FLAGS_VCONN_ON))
- set_vconn(port, 0);
-
- /* Wait up to tVSafe0V for Vbus to disappear */
- tc[port].ps_reset_state = PS_STATE1;
- pd_timer_enable(port, TC_TIMER_TIMEOUT, PD_T_SAFE_0V);
- return false;
- case PS_STATE1:
- if (pd_check_vbus_level(port, VBUS_SAFE0V)) {
- /*
- * Partner dropped Vbus, reduce our current consumption
- * and await its return.
- */
- sink_stop_drawing_current(port);
-
- tcpm_enable_auto_discharge_disconnect(port, 0);
-
- /* Move on to waiting for the return of Vbus */
- tc[port].ps_reset_state = PS_STATE2;
- pd_timer_enable(port, TC_TIMER_TIMEOUT,
- PD_T_SRC_RECOVER_MAX +
- PD_T_SRC_TURN_ON);
- }
-
- if (pd_timer_is_expired(port, TC_TIMER_TIMEOUT)) {
- /*
- * No Vbus drop likely indicates a non-PD port partner,
- * move to the next stage anyway.
- */
- tc[port].ps_reset_state = PS_STATE2;
- pd_timer_enable(port, TC_TIMER_TIMEOUT,
- PD_T_SRC_RECOVER_MAX +
- PD_T_SRC_TURN_ON);
- }
- return false;
- case PS_STATE2:
- /*
- * Look for the voltage to be above disconnect. Since we didn't
- * drop our draw on non-PD partners, they may have dipped below
- * vSafe5V but still be in a valid connected voltage.
- */
- if (!pd_check_vbus_level(port, VBUS_REMOVED)) {
- /*
- * Inform policy engine that power supply
- * reset is complete
- */
- tc[port].ps_reset_state = PS_STATE0;
- pe_ps_reset_complete(port);
-
- /*
- * Now that VBUS is back, let's notify charge manager
- * regarding the source's current capabilities.
- * sink_power_sub_states() reacts to changes in CC
- * terminations, however during a HardReset, the
- * terminations of a non-PD port partner will not
- * change. Therefore, set the debounce time to right
- * now, such that we'll actually reset the correct input
- * current limit.
- */
- pd_timer_enable(port, TC_TIMER_CC_DEBOUNCE, 0);
- sink_power_sub_states(port);
-
- /* Power is back, Enable AutoDischargeDisconnect */
- tcpm_enable_auto_discharge_disconnect(port, 1);
- return true;
- }
- /*
- * If Vbus isn't back after wait + tSrcTurnOn, go unattached
- */
- if (pd_timer_is_expired(port, TC_TIMER_TIMEOUT)) {
- tc[port].ps_reset_state = PS_STATE0;
- set_state_tc(port, TC_UNATTACHED_SNK);
- return true;
- }
- }
-
- return false;
-}
-#endif /* CONFIG_USB_PE_SM */
-
-void tc_start_error_recovery(int port)
-{
- assert(port == TASK_ID_TO_PD_PORT(task_get_current()));
-
- /*
- * The port should transition to the ErrorRecovery state
- * from any other state when directed.
- */
- set_state_tc(port, TC_ERROR_RECOVERY);
-}
-
-static void restart_tc_sm(int port, enum usb_tc_state start_state)
-{
- int res;
-
- /* Clear flags before we transitions states */
- tc[port].flags = 0;
-
- res = tcpm_init(port);
-
- CPRINTS("C%d: TCPC init %s", port, res ? "failed" : "ready");
-
- /*
- * Update the Rp Value. We don't need to update CC lines though as that
- * happens in below set_state transition.
- */
- typec_select_src_current_limit_rp(port,
- typec_get_default_current_limit_rp(port));
-
- /* Disable if restart failed, otherwise start in default state. */
- set_state_tc(port, res ? TC_DISABLED : start_state);
-
- if (IS_ENABLED(CONFIG_USBC_SS_MUX))
- /* Initialize USB mux to its default state */
- usb_mux_init(port);
-
- if (IS_ENABLED(CONFIG_USBC_PPC)) {
- /*
- * Wait to initialize the PPC after tcpc, which sets
- * the correct Rd values; otherwise the TCPC might
- * not be pulling the CC lines down when the PPC connects the
- * CC lines from the USB connector to the TCPC cause the source
- * to drop Vbus causing a brown out.
- */
- ppc_init(port);
- }
-
- if (IS_ENABLED(CONFIG_CHARGE_MANAGER)) {
- /*
- * Only initialize PD supplier current limit to 0.
- * Defer initializing type-C supplier current limit
- * to Unattached.SNK or Attached.SNK.
- */
- pd_set_input_current_limit(port, 0, 0);
- charge_manager_update_dualrole(port, CAP_UNKNOWN);
- }
-
- /*
- * PD r3.0 v2.0, ss6.2.1.1.5:
- * After a physical or logical (USB Type-C Error Recovery) Attach, a
- * Port discovers the common Specification Revision level between itself
- * and its Port Partner and/or the Cable Plug(s), and uses this
- * Specification Revision level until a Detach, Hard Reset or Error
- * Recovery happens.
- *
- * This covers the Error Recovery case, because TC_ERROR_RECOVERY
- * reinitializes the TC state machine. This also covers the implicit
- * case when PD is suspended and resumed or when the state machine is
- * first initialized.
- */
- if (IS_ENABLED(CONFIG_USB_PRL_SM))
- prl_set_default_pd_revision(port);
-
-#ifdef CONFIG_USB_PE_SM
- tc_enable_pd(port, 0);
- tc[port].ps_reset_state = PS_STATE0;
-#endif
-}
-
-void tc_state_init(int port)
-{
- enum usb_tc_state first_state;
-
- /* For test builds, replicate static initialization */
- if (IS_ENABLED(TEST_BUILD)) {
- int i;
-
- for (i = 0; i < CONFIG_USB_PD_PORT_MAX_COUNT; ++i) {
- memset(&tc[i], 0, sizeof(tc[i]));
- drp_state[i] = CONFIG_USB_PD_INITIAL_DRP_STATE;
- }
- }
-
- /* If port is not available, there is nothing to initialize */
- if (port >= board_get_usb_pd_port_count()) {
- tc_enable_pd(port, 0);
- TC_SET_FLAG(port, TC_FLAGS_REQUEST_SUSPEND);
- return;
- }
-
-
- /* Allow system to set try src enable */
- if (IS_ENABLED(CONFIG_USB_PD_TRY_SRC))
- tc_try_src_override(TRY_SRC_NO_OVERRIDE);
-
- /*
- * Set initial PD communication policy.
- */
- tc_policy_pd_enable(port, pd_comm_allowed_by_policy());
-
-#ifdef HAS_TASK_CHIPSET
- /* Set dual-role state based on chipset power state */
- if (chipset_in_state(CHIPSET_STATE_ANY_OFF))
- pd_set_dual_role_and_event(port, PD_DRP_FORCE_SINK, 0);
- else if (chipset_in_state(CHIPSET_STATE_ANY_SUSPEND))
- pd_set_dual_role_and_event(port, pd_get_drp_state_in_suspend(), 0);
- else /* CHIPSET_STATE_ON */
- pd_set_dual_role_and_event(port, PD_DRP_TOGGLE_ON, 0);
-#else
- pd_set_dual_role_and_event(port, board_tc_get_initial_drp_mode(port), 0);
-#endif
-
- /*
- * We are going to apply CC open (start with ErrorRecovery state)
- * unless there is something which forbids us to do that (one of
- * conditions below is true)
- */
- first_state = TC_ERROR_RECOVERY;
-
- /*
- * If we just lost power, don't apply CC open. Otherwise we would boot
- * loop, and if this is a fresh power on, then we know there isn't any
- * stale PD state as well.
- */
- if (system_get_reset_flags() &
- (EC_RESET_FLAG_BROWNOUT | EC_RESET_FLAG_POWER_ON)) {
- first_state = TC_UNATTACHED_SNK;
- }
-
- /*
- * If this is non-EFS2 device, battery is not present and EC RO doesn't
- * keep power-on reset flag after reset caused by H1, then don't apply
- * CC open because it will cause brown out.
- *
- * Please note that we are checking if CONFIG_BOARD_RESET_AFTER_POWER_ON
- * is defined now, but actually we need to know if it was enabled in
- * EC RO! It was assumed that if CONFIG_BOARD_RESET_AFTER_POWER_ON is
- * defined now it was defined in EC RO too.
- */
- if (!IS_ENABLED(CONFIG_BOARD_RESET_AFTER_POWER_ON) &&
- !IS_ENABLED(CONFIG_VBOOT_EFS2) && IS_ENABLED(CONFIG_BATTERY) &&
- (battery_is_present() == BP_NO)) {
- first_state = TC_UNATTACHED_SNK;
- }
-
- if (first_state == TC_UNATTACHED_SNK) {
- /* Turn off any previous sourcing */
- tc_src_power_off(port);
- set_vconn(port, 0);
- }
-
-#ifdef CONFIG_USB_PD_TCPC_BOARD_INIT
- /* Board specific TCPC init */
- board_tcpc_init();
-#endif
-
- /*
- * Start with ErrorRecovery state if we can to put us in
- * a clean state from any previous boots.
- */
- restart_tc_sm(port, first_state);
-}
-
-enum pd_cable_plug tc_get_cable_plug(int port)
-{
- /*
- * Messages sent by this state machine are always from a DFP/UFP,
- * i.e. the chromebook.
- */
- return PD_PLUG_FROM_DFP_UFP;
-}
-
-void pd_comm_enable(int port, int en)
-{
- tc_policy_pd_enable(port, en);
-}
-
-uint8_t tc_get_polarity(int port)
-{
- return tc[port].polarity;
-}
-
-uint8_t tc_get_pd_enabled(int port)
-{
- return !tc[port].pd_disabled_mask;
-}
-
-bool pd_alt_mode_capable(int port)
-{
- return IS_ENABLED(CONFIG_USB_PE_SM) && tc_get_pd_enabled(port);
-}
-
-void tc_set_power_role(int port, enum pd_power_role role)
-{
- tc[port].power_role = role;
-}
-
-/*
- * Private Functions
- */
-
-/* Set GPIO_CCD_MODE_ODL gpio */
-static void set_ccd_mode(const int port, const bool enable)
-{
- if (IS_ENABLED(CONFIG_ASSERT_CCD_MODE_ON_DTS_CONNECT) &&
- port == CONFIG_CCD_USBC_PORT_NUMBER) {
- if (enable)
- CPRINTS("Asserting GPIO_CCD_MODE_ODL");
- gpio_set_level(_GPIO_CCD_MODE_ODL, !enable);
- }
-}
-
-/* Set the TypeC state machine to a new state. */
-static void set_state_tc(const int port, const enum usb_tc_state new_state)
-{
- assert(port == TASK_ID_TO_PD_PORT(task_get_current()));
-
- set_state(port, &tc[port].ctx, &tc_states[new_state]);
-}
-
-/* Get the current TypeC state. */
-test_export_static enum usb_tc_state get_state_tc(const int port)
-{
- /* Default to returning TC_STATE_COUNT if no state has been set */
- if (tc[port].ctx.current == NULL)
- return TC_STATE_COUNT;
- else
- return tc[port].ctx.current - &tc_states[0];
-}
-
-/* Get the previous TypeC state. */
-static enum usb_tc_state get_last_state_tc(const int port)
-{
- return tc[port].ctx.previous - &tc_states[0];
-}
-
-static void print_current_state(const int port)
-{
- if (IS_ENABLED(USB_PD_DEBUG_LABELS))
- CPRINTS_L1("C%d: %s", port, tc_state_names[get_state_tc(port)]);
- else
- CPRINTS("C%d: tc-st%d", port, get_state_tc(port));
-}
-
-static void handle_device_access(int port)
-{
- if (IS_ENABLED(CONFIG_USB_PD_TCPC_LOW_POWER) &&
- get_state_tc(port) == TC_LOW_POWER_MODE) {
- tc_start_event_loop(port);
- pd_timer_enable(port, TC_TIMER_LOW_POWER_TIME,
- PD_LPM_DEBOUNCE_US);
- }
-}
-
-void tc_event_check(int port, int evt)
-{
-#ifdef DEBUG_PRINT_FLAG_AND_EVENT_NAMES
- if (evt != TASK_EVENT_TIMER)
- print_bits(port, "Event", evt, event_bit_names,
- ARRAY_SIZE(event_bit_names));
-#endif
-
- if (evt & PD_EXIT_LOW_POWER_EVENT_MASK)
- TC_SET_FLAG(port, TC_FLAGS_CHECK_CONNECTION);
-
- if (evt & PD_EVENT_DEVICE_ACCESSED)
- handle_device_access(port);
-
- if (evt & PD_EVENT_TCPC_RESET)
- reset_device_and_notify(port);
-
- if (evt & PD_EVENT_RX_HARD_RESET)
- pd_execute_hard_reset(port);
-
- if (evt & PD_EVENT_SEND_HARD_RESET) {
- /* Pass Hard Reset request to PE layer if available */
- if (IS_ENABLED(CONFIG_USB_PE_SM) && tc_get_pd_enabled(port))
- pd_dpm_request(port, DPM_REQUEST_HARD_RESET_SEND);
- }
-
-#ifdef CONFIG_POWER_COMMON
- if (IS_ENABLED(CONFIG_POWER_COMMON)) {
- if (evt & PD_EVENT_POWER_STATE_CHANGE)
- handle_new_power_state(port);
- }
-#endif /* CONFIG_POWER_COMMON */
-
- if (IS_ENABLED(CONFIG_USB_PD_ALT_MODE_DFP)) {
- int i;
-
- /*
- * Notify all ports of sysjump
- */
- if (evt & PD_EVENT_SYSJUMP) {
- for (i = 0; i <
- CONFIG_USB_PD_PORT_MAX_COUNT; i++)
- dpm_set_mode_exit_request(i);
- notify_sysjump_ready();
- }
- }
-
- if (evt & PD_EVENT_UPDATE_DUAL_ROLE)
- pd_update_dual_role_config(port);
-}
-
-/*
- * CC values for regular sources and Debug sources (aka DTS)
- *
- * Source type Mode of Operation CC1 CC2
- * ---------------------------------------------
- * Regular Default USB Power RpUSB Open
- * Regular USB-C @ 1.5 A Rp1A5 Open
- * Regular USB-C @ 3 A Rp3A0 Open
- * DTS Default USB Power Rp3A0 Rp1A5
- * DTS USB-C @ 1.5 A Rp1A5 RpUSB
- * DTS USB-C @ 3 A Rp3A0 RpUSB
- */
-
-void tc_set_data_role(int port, enum pd_data_role role)
-{
- enum pd_data_role prev_data_role;
-
- prev_data_role = tc[port].data_role;
- tc[port].data_role = role;
-
- if (IS_ENABLED(CONFIG_USBC_SS_MUX))
- set_usb_mux_with_current_data_role(port);
-
- /*
- * Run any board-specific code for role swap (e.g. setting OTG signals
- * to SoC).
- */
- pd_execute_data_swap(port, role);
-
- /*
- * For BC1.2 detection that is triggered on data role change events
- * instead of VBUS changes, need to set an event to wake up the USB_CHG
- * task and indicate the current data role.
- */
- bc12_role_change_handler(port, prev_data_role, tc[port].data_role);
-
- /* Notify TCPC of role update */
- tcpm_set_msg_header(port, tc[port].power_role, tc[port].data_role);
-}
-
-static void sink_stop_drawing_current(int port)
-{
- pd_set_input_current_limit(port, 0, 0);
-
- if (IS_ENABLED(CONFIG_CHARGE_MANAGER)) {
- typec_set_input_current_limit(port, 0, 0);
- charge_manager_set_ceil(port,
- CEIL_REQUESTOR_PD, CHARGE_CEIL_NONE);
- }
-}
-
-static void pd_update_try_source(void)
-{
-#ifdef CONFIG_USB_PD_TRY_SRC
- tc_enable_try_src(pd_is_try_source_capable());
-#endif
-}
-DECLARE_HOOK(HOOK_BATTERY_SOC_CHANGE, pd_update_try_source, HOOK_PRIO_DEFAULT);
-
-static void set_vconn(int port, int enable)
-{
- if (enable)
- TC_SET_FLAG(port, TC_FLAGS_VCONN_ON);
- else
- TC_CLR_FLAG(port, TC_FLAGS_VCONN_ON);
-
- /*
- * Check our OC event counter. If we've exceeded our threshold, then
- * let's latch our source path off to prevent continuous cycling. When
- * the PD state machine detects a disconnection on the CC lines, we will
- * reset our OC event counter.
- */
- if (IS_ENABLED(CONFIG_USBC_OCP) &&
- enable && usbc_ocp_is_port_latched_off(port))
- return;
-
- /*
- * Disable PPC Vconn first then TCPC in case the voltage feeds back
- * to TCPC and damages.
- */
- if (IS_ENABLED(CONFIG_USBC_PPC_VCONN) && !enable)
- ppc_set_vconn(port, 0);
-
- /*
- * Some TCPCs/PPC combinations can trigger OVP if the TCPC doesn't
- * source VCONN. This happens if the TCPC will trip OVP with 5V, and the
- * PPC doesn't isolate the TCPC from VCONN when sourcing. But, some PPCs
- * which do isolate the TCPC can't handle 5V on its host-side CC pins,
- * so the TCPC shouldn't source VCONN in those cases.
- *
- * In the first case, both TCPC and PPC will potentially source Vconn,
- * but that should be okay since Vconn has "make before break"
- * electrical requirements when swapping anyway.
- *
- * See b/72961003 and b/180973460
- */
- tcpm_set_vconn(port, enable);
-
- if (IS_ENABLED(CONFIG_USBC_PPC_VCONN) && enable)
- ppc_set_vconn(port, 1);
-}
-
-/* This must only be called from the PD task */
-static void pd_update_dual_role_config(int port)
-{
- if (tc[port].power_role == PD_ROLE_SOURCE &&
- (drp_state[port] == PD_DRP_FORCE_SINK ||
- (drp_state[port] == PD_DRP_TOGGLE_OFF &&
- get_state_tc(port) == TC_UNATTACHED_SRC))) {
- /*
- * Change to sink if port is currently a source AND (new DRP
- * state is force sink OR new DRP state is toggle off and we are
- * in the source disconnected state).
- */
- set_state_tc(port, TC_UNATTACHED_SNK);
- } else if (tc[port].power_role == PD_ROLE_SINK &&
- drp_state[port] == PD_DRP_FORCE_SOURCE) {
- /*
- * Change to source if port is currently a sink and the
- * new DRP state is force source.
- */
- set_state_tc(port, TC_UNATTACHED_SRC);
- }
-}
-
-__maybe_unused static void handle_new_power_state(int port)
-{
- if (!IS_ENABLED(CONFIG_POWER_COMMON))
- assert(0);
-
- if (IS_ENABLED(CONFIG_POWER_COMMON) &&
- IS_ENABLED(CONFIG_USB_PE_SM)) {
- if (chipset_in_or_transitioning_to_state(
- CHIPSET_STATE_ANY_OFF)) {
- /*
- * The SoC will negotiate alternate mode again when it
- * boots up
- */
- dpm_set_mode_exit_request(port);
- }
- }
-
- /*
- * If the sink port was sourcing Vconn, and can no longer, request a
- * hard reset on this port to restore Vconn to the source.
- */
- if (IS_ENABLED(CONFIG_USB_PE_SM)) {
- if (tc_is_vconn_src(port) && tc_is_attached_snk(port) &&
- !pd_check_vconn_swap(port))
- pd_dpm_request(port, DPM_REQUEST_HARD_RESET_SEND);
- }
-
- /*
- * TC_FLAGS_UPDATE_USB_MUX is set on chipset startup and shutdown.
- * Set the USB mux according to the new power state. If the chipset
- * is transitioning to OFF, this disconnects USB and DP mux.
- *
- * Transitions to and from suspend states do not change the USB mux
- * or the alternate mode configuration.
- */
- if (TC_CHK_FLAG(port, TC_FLAGS_UPDATE_USB_MUX)) {
- TC_CLR_FLAG(port, TC_FLAGS_UPDATE_USB_MUX);
- set_usb_mux_with_current_data_role(port);
- }
-}
-
-#ifdef CONFIG_USBC_VCONN_SWAP
-void pd_request_vconn_swap_off(int port)
-{
- if (get_state_tc(port) == TC_ATTACHED_SRC ||
- get_state_tc(port) == TC_ATTACHED_SNK) {
- TC_SET_FLAG(port, TC_FLAGS_REQUEST_VC_SWAP_OFF);
- task_wake(PD_PORT_TO_TASK_ID(port));
- }
-}
-
-void pd_request_vconn_swap_on(int port)
-{
- if (get_state_tc(port) == TC_ATTACHED_SRC ||
- get_state_tc(port) == TC_ATTACHED_SNK) {
- TC_SET_FLAG(port, TC_FLAGS_REQUEST_VC_SWAP_ON);
- task_wake(PD_PORT_TO_TASK_ID(port));
- }
-}
-
-void pd_request_vconn_swap(int port)
-{
- pd_dpm_request(port, DPM_REQUEST_VCONN_SWAP);
-}
-#endif
-
-int tc_is_vconn_src(int port)
-{
- if (IS_ENABLED(CONFIG_USBC_VCONN))
- return TC_CHK_FLAG(port, TC_FLAGS_VCONN_ON);
- else
- return 0;
-}
-
-static __maybe_unused int reset_device_and_notify(int port)
-{
- int rv;
- int task, waiting_tasks;
-
- /* This should only be called from the PD task */
- assert(port == TASK_ID_TO_PD_PORT(task_get_current()));
-
- TC_SET_FLAG(port, TC_FLAGS_LPM_TRANSITION);
- rv = tcpm_init(port);
- TC_CLR_FLAG(port, TC_FLAGS_LPM_TRANSITION);
- TC_CLR_FLAG(port, TC_FLAGS_LPM_ENGAGED);
- tc_start_event_loop(port);
-
- CPRINTS("C%d: TCPC init %s", port, rv ? "failed!" : "ready");
-
- /*
- * Before getting the other tasks that are waiting, clear the reset
- * event from this PD task to prevent multiple reset/init events
- * occurring.
- *
- * The double reset event happens when the higher priority PD interrupt
- * task gets an interrupt during the above tcpm_init function. When that
- * occurs, the higher priority task waits correctly for us to finish
- * waking the TCPC, but it has also set PD_EVENT_TCPC_RESET again, which
- * would result in a second, unnecessary init.
- */
- atomic_clear_bits(task_get_event_bitmap(task_get_current()),
- PD_EVENT_TCPC_RESET);
-
- waiting_tasks = atomic_clear(&tc[port].tasks_waiting_on_reset);
-
- /* Wake up all waiting tasks. */
- while (waiting_tasks) {
- task = __fls(waiting_tasks);
- waiting_tasks &= ~BIT(task);
- task_set_event(task, TASK_EVENT_PD_AWAKE);
- }
-
- return rv;
-}
-
-#ifdef CONFIG_USB_PD_TCPC_LOW_POWER
-void pd_wait_exit_low_power(int port)
-{
- if (!TC_CHK_FLAG(port, TC_FLAGS_LPM_ENGAGED))
- return;
-
- if (port == TASK_ID_TO_PD_PORT(task_get_current())) {
- if (!TC_CHK_FLAG(port, TC_FLAGS_LPM_TRANSITION))
- reset_device_and_notify(port);
- } else {
- /* Otherwise, we need to wait for the TCPC reset to complete */
- atomic_or(&tc[port].tasks_waiting_on_reset,
- 1 << task_get_current());
- /*
- * NOTE: We could be sending the PD task the reset event while
- * it is already processing the reset event. If that occurs,
- * then we will reset the TCPC multiple times, which is
- * undesirable but most likely benign. Empirically, this doesn't
- * happen much, but it if starts occurring, we can add a guard
- * to prevent/reduce it.
- */
- task_set_event(PD_PORT_TO_TASK_ID(port), PD_EVENT_TCPC_RESET);
- task_wait_event_mask(TASK_EVENT_PD_AWAKE, -1);
- }
-}
-
-/*
- * This can be called from any task. If we are in the PD task, we can handle
- * immediately. Otherwise, we need to notify the PD task via event.
- */
-void pd_device_accessed(int port)
-{
- if (port == TASK_ID_TO_PD_PORT(task_get_current()))
- handle_device_access(port);
- else
- task_set_event(PD_PORT_TO_TASK_ID(port),
- PD_EVENT_DEVICE_ACCESSED);
-}
-
-/*
- * TODO(b/137493121): Move this function to a separate file that's shared
- * between the this and the original stack.
- */
-void pd_prevent_low_power_mode(int port, int prevent)
-{
- const int current_task_mask = (1 << task_get_current());
-
- if (prevent)
- atomic_or(&tc[port].tasks_preventing_lpm, current_task_mask);
- else
- atomic_clear_bits(&tc[port].tasks_preventing_lpm,
- current_task_mask);
-}
-#endif /* CONFIG_USB_PD_TCPC_LOW_POWER */
-
-static void sink_power_sub_states(int port)
-{
- enum tcpc_cc_voltage_status cc1, cc2, cc;
- enum tcpc_cc_voltage_status new_cc_voltage;
-
- tcpm_get_cc(port, &cc1, &cc2);
-
- cc = polarity_rm_dts(tc[port].polarity) ? cc2 : cc1;
-
- if (cc == TYPEC_CC_VOLT_RP_DEF)
- new_cc_voltage = TYPEC_CC_VOLT_RP_DEF;
- else if (cc == TYPEC_CC_VOLT_RP_1_5)
- new_cc_voltage = TYPEC_CC_VOLT_RP_1_5;
- else if (cc == TYPEC_CC_VOLT_RP_3_0)
- new_cc_voltage = TYPEC_CC_VOLT_RP_3_0;
- else
- new_cc_voltage = TYPEC_CC_VOLT_OPEN;
-
- /* Debounce the cc state */
- if (new_cc_voltage != tc[port].cc_voltage) {
- tc[port].cc_voltage = new_cc_voltage;
- pd_timer_enable(port, TC_TIMER_CC_DEBOUNCE,
- PD_T_RP_VALUE_CHANGE);
- return;
- }
-
- if (!pd_timer_is_disabled(port, TC_TIMER_CC_DEBOUNCE)) {
- if (!pd_timer_is_expired(port, TC_TIMER_CC_DEBOUNCE))
- return;
-
- pd_timer_disable(port, TC_TIMER_CC_DEBOUNCE);
-
- if (IS_ENABLED(CONFIG_CHARGE_MANAGER)) {
- tc[port].typec_curr = usb_get_typec_current_limit(
- tc[port].polarity, cc1, cc2);
-
- typec_set_input_current_limit(port,
- tc[port].typec_curr, TYPE_C_VOLTAGE);
- charge_manager_update_dualrole(port, CAP_DEDICATED);
- }
- }
-}
-
-
-/*
- * TYPE-C State Implementations
- */
-
-/**
- * Disabled
- *
- * Super State Entry Actions:
- * Remove the terminations from CC
- * Set VBUS and VCONN off
- */
-static void tc_disabled_entry(const int port)
-{
- print_current_state(port);
- /*
- * We have completed tc_cc_open_entry (our super state), so set flag
- * to indicate to pd_is_port_enabled that we are now suspended.
- */
- TC_SET_FLAG(port, TC_FLAGS_SUSPENDED);
-}
-
-static void tc_disabled_run(const int port)
-{
- /* If pd_set_suspend clears the request, go to TC_UNATTACHED_SNK/SRC. */
- if (!TC_CHK_FLAG(port, TC_FLAGS_REQUEST_SUSPEND)) {
- set_state_tc(port, drp_state[port] == PD_DRP_FORCE_SOURCE ?
- TC_UNATTACHED_SRC : TC_UNATTACHED_SNK);
- } else {
- if (IS_ENABLED(CONFIG_USBC_RETIMER_FW_UPDATE)) {
- if (TC_CHK_FLAG(port,
- TC_FLAGS_USB_RETIMER_FW_UPDATE_LTD_RUN)) {
- TC_CLR_FLAG(port,
- TC_FLAGS_USB_RETIMER_FW_UPDATE_LTD_RUN);
- usb_retimer_fw_update_process_op_cb(port);
- }
- }
- tc_pause_event_loop(port);
- }
-}
-
-static void tc_disabled_exit(const int port)
-{
- int rv;
-
- tc_start_event_loop(port);
- TC_CLR_FLAG(port, TC_FLAGS_SUSPENDED);
-
- rv = tcpm_init(port);
- CPRINTS("C%d: TCPC init %s", port, rv ? "failed!" : "ready");
-}
-
-/**
- * ErrorRecovery
- *
- * Super State Entry Actions:
- * Remove the terminations from CC
- * Set's VBUS and VCONN off
- */
-static void tc_error_recovery_entry(const int port)
-{
- print_current_state(port);
-
- pd_timer_enable(port, TC_TIMER_TIMEOUT, PD_T_ERROR_RECOVERY);
-
- TC_CLR_FLAG(port, TC_FLAGS_REQUEST_ERROR_RECOVERY);
-}
-
-static void tc_error_recovery_run(const int port)
-{
- enum usb_tc_state start_state;
-
- if (!pd_timer_is_expired(port, TC_TIMER_TIMEOUT))
- return;
-
- /*
- * If we transitioned to error recovery as the first state and we
- * didn't brown out, we don't need to reinitialized the tc statemachine
- * because we just did that. So transition to the state directly.
- */
- if (tc[port].ctx.previous == NULL) {
- set_state_tc(port, drp_state[port] == PD_DRP_FORCE_SOURCE ?
- TC_UNATTACHED_SRC : TC_UNATTACHED_SNK);
- return;
- }
-
- /*
- * If try src support is active (e.g. in S0). Then try to become the
- * SRC, otherwise we should try to be the sink.
- */
- start_state = TC_UNATTACHED_SNK;
- if (IS_ENABLED(CONFIG_USB_PD_TRY_SRC))
- if (is_try_src_enabled(port) ||
- drp_state[port] == PD_DRP_FORCE_SOURCE)
- start_state = TC_UNATTACHED_SRC;
-
- restart_tc_sm(port, start_state);
-}
-
-static void tc_error_recovery_exit(const int port)
-{
- pd_timer_disable(port, TC_TIMER_TIMEOUT);
-}
-
-/**
- * Unattached.SNK
- */
-static void tc_unattached_snk_entry(const int port)
-{
- enum pd_data_role prev_data_role;
-
- if (get_last_state_tc(port) != TC_UNATTACHED_SRC) {
- tc_detached(port);
- print_current_state(port);
- }
-
- /*
- * We are in an unattached state and considering to be a SNK
- * searching for a SRC partner. We set the CC pull value to
- * to indicate our intent to be SNK in hopes a partner SRC
- * will is there to attach to.
- *
- * Both CC1 and CC2 pins shall be independently terminated to
- * ground through Rd.
- *
- * Restore default current limit Rp in case we swap to source
- *
- * Run any debug detaches needed before setting CC, as some TCPCs may
- * require we set CC Open before changing power roles with a debug
- * accessory.
- */
- tcpm_debug_detach(port);
- typec_select_pull(port, TYPEC_CC_RD);
- typec_select_src_current_limit_rp(port,
- typec_get_default_current_limit_rp(port));
- typec_update_cc(port);
-
-
- prev_data_role = tc[port].data_role;
- tc[port].data_role = PD_ROLE_DISCONNECTED;
- /*
- * When data role set events are used to enable BC1.2, then CC
- * detach events are used to notify BC1.2 that it can be powered
- * down.
- */
- bc12_role_change_handler(port, prev_data_role, tc[port].data_role);
-
- if (IS_ENABLED(CONFIG_CHARGE_MANAGER))
- charge_manager_update_dualrole(port, CAP_UNKNOWN);
-
- tc_set_partner_role(port, PPC_DEV_DISCONNECTED);
-
- /*
- * Indicate that the port is disconnected so the board
- * can restore state from any previous data swap.
- */
- pd_execute_data_swap(port, PD_ROLE_DISCONNECTED);
- pd_timer_enable(port, TC_TIMER_NEXT_ROLE_SWAP, PD_T_DRP_SNK);
-
- if (IS_ENABLED(CONFIG_USB_PE_SM)) {
- CLR_FLAGS_ON_DISCONNECT(port);
- tc_enable_pd(port, 0);
- }
-}
-
-static void tc_unattached_snk_run(const int port)
-{
- enum tcpc_cc_voltage_status cc1, cc2;
-
- /*
- * TODO(b/137498392): Add wait before sampling the CC
- * status after role changes
- */
-
- if (IS_ENABLED(CONFIG_USB_PE_SM)) {
- if (TC_CHK_FLAG(port, TC_FLAGS_HARD_RESET_REQUESTED)) {
- TC_CLR_FLAG(port, TC_FLAGS_HARD_RESET_REQUESTED);
- tc_set_data_role(port, PD_ROLE_UFP);
- /* Inform Policy Engine that hard reset is complete */
- pe_ps_reset_complete(port);
- }
- }
-
- /* Check for connection */
- tcpm_get_cc(port, &cc1, &cc2);
-
- /*
- * The port shall transition to AttachWait.SNK when a Source
- * connection is detected, as indicated by the SNK.Rp state
- * on at least one of its CC pins.
- *
- * A DRP shall transition to Unattached.SRC within tDRPTransition
- * after the state of both CC pins is SNK.Open for
- * tDRP − dcSRC.DRP ∙ tDRP.
- */
- if (cc_is_rp(cc1) || cc_is_rp(cc2)) {
- /* Connection Detected */
- set_state_tc(port, TC_ATTACH_WAIT_SNK);
- return;
- }
-
- /*
- * Debounce the CC open status. Some TCPC needs time to get the CC
- * status valid. Before that, CC open is reported by default. Wait
- * to make sure the CC is really open. Reuse the role toggle timer.
- */
- if (!pd_timer_is_expired(port, TC_TIMER_NEXT_ROLE_SWAP))
- return;
-
- /*
- * Initialize type-C supplier current limits to 0. The charge
- * manage is now seeded if it was not.
- */
- if (IS_ENABLED(CONFIG_CHARGE_MANAGER))
- typec_set_input_current_limit(port, 0, 0);
-
- /*
- * Attempt TCPC auto DRP toggle if it is
- * not already auto toggling.
- */
- if (IS_ENABLED(CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE) &&
- drp_state[port] == PD_DRP_TOGGLE_ON &&
- tcpm_auto_toggle_supported(port)) {
- set_state_tc(port, TC_DRP_AUTO_TOGGLE);
- } else if (drp_state[port] == PD_DRP_TOGGLE_ON) {
- /* DRP Toggle. The timer was checked above. */
- set_state_tc(port, TC_UNATTACHED_SRC);
- } else if (IS_ENABLED(CONFIG_USB_PD_TCPC_LOW_POWER) &&
- (drp_state[port] == PD_DRP_FORCE_SINK ||
- drp_state[port] == PD_DRP_TOGGLE_OFF)) {
- set_state_tc(port, TC_LOW_POWER_MODE);
- }
-}
-
-static void tc_unattached_snk_exit(const int port)
-{
- pd_timer_disable(port, TC_TIMER_NEXT_ROLE_SWAP);
-}
-
-/**
- * AttachWait.SNK
- *
- * Super State Entry Actions:
- * Vconn Off
- * Place Rd on CC
- * Set power role to SINK
- */
-static void tc_attach_wait_snk_entry(const int port)
-{
- print_current_state(port);
-
- tc[port].cc_state = PD_CC_UNSET;
-}
-
-static void tc_attach_wait_snk_run(const int port)
-{
- enum tcpc_cc_voltage_status cc1, cc2;
- enum pd_cc_states new_cc_state;
-
- /* Check for connection */
- tcpm_get_cc(port, &cc1, &cc2);
-
- if (cc_is_rp(cc1) && cc_is_rp(cc2) && board_is_dts_port(port))
- new_cc_state = PD_CC_DFP_DEBUG_ACC;
- else if (cc_is_rp(cc1) || cc_is_rp(cc2))
- new_cc_state = PD_CC_DFP_ATTACHED;
- else
- new_cc_state = PD_CC_NONE;
-
- /* Debounce the cc state */
- if (new_cc_state != tc[port].cc_state) {
- pd_timer_enable(port, TC_TIMER_CC_DEBOUNCE, PD_T_CC_DEBOUNCE);
- pd_timer_enable(port, TC_TIMER_PD_DEBOUNCE, PD_T_PD_DEBOUNCE);
- tc[port].cc_state = new_cc_state;
- return;
- }
-
- /*
- * A DRP shall transition to Unattached.SRC when the state of both
- * the CC1 and CC2 pins is SNK.Open for at least tPDDebounce, however
- * when DRP state prevents switch to SRC the next state should be
- * Unattached.SNK.
- */
- if (new_cc_state == PD_CC_NONE &&
- pd_timer_is_expired(port, TC_TIMER_PD_DEBOUNCE)) {
- /* We are detached */
- if (drp_state[port] == PD_DRP_TOGGLE_OFF
- || drp_state[port] == PD_DRP_FREEZE
- || drp_state[port] == PD_DRP_FORCE_SINK)
- set_state_tc(port, TC_UNATTACHED_SNK);
- else
- set_state_tc(port, TC_UNATTACHED_SRC);
- return;
- }
-
- /* Wait for CC debounce */
- if (!pd_timer_is_expired(port, TC_TIMER_CC_DEBOUNCE))
- return;
-
- /*
- * The port shall transition to Attached.SNK after the state of only
- * one of the CC1 or CC2 pins is SNK.Rp for at least tCCDebounce and
- * VBUS is detected.
- *
- * A DRP that strongly prefers the Source role may optionally
- * transition to Try.SRC instead of Attached.SNK when the state of only
- * one CC pin has been SNK.Rp for at least tCCDebounce and VBUS is
- * detected.
- *
- * If the port supports Debug Accessory Mode, the port shall transition
- * to DebugAccessory.SNK if the state of both the CC1 and CC2 pins is
- * SNK.Rp for at least tCCDebounce and VBUS is detected.
- */
- if (pd_is_vbus_present(port)) {
- if (new_cc_state == PD_CC_DFP_ATTACHED) {
- if (IS_ENABLED(CONFIG_USB_PD_TRY_SRC) &&
- is_try_src_enabled(port))
- set_state_tc(port, TC_TRY_SRC);
- else
- set_state_tc(port, TC_ATTACHED_SNK);
- } else {
- /* new_cc_state is PD_CC_DFP_DEBUG_ACC */
- CPRINTS("C%d: Debug accessory detected", port);
- TC_SET_FLAG(port, TC_FLAGS_TS_DTS_PARTNER);
- set_state_tc(port, TC_ATTACHED_SNK);
- }
-
- if (IS_ENABLED(CONFIG_USB_PE_SM) &&
- IS_ENABLED(CONFIG_USB_PD_ALT_MODE_DFP)) {
- hook_call_deferred(&pd_usb_billboard_deferred_data,
- PD_T_AME);
- }
- }
-}
-
-static void tc_attach_wait_snk_exit(const int port)
-{
- pd_timer_disable(port, TC_TIMER_CC_DEBOUNCE);
- pd_timer_disable(port, TC_TIMER_PD_DEBOUNCE);
-}
-
-/**
- * Attached.SNK, shared with Debug Accessory.SNK
- */
-static void tc_attached_snk_entry(const int port)
-{
- enum tcpc_cc_voltage_status cc1, cc2;
-
- print_current_state(port);
-
- /*
- * Known state of attach is SNK. We need to apply this pull value
- * to make it set in hardware at the correct time but set the common
- * pull here.
- *
- * Both CC1 and CC2 pins shall be independently terminated to
- * ground through Rd.
- */
- typec_select_pull(port, TYPEC_CC_RD);
-
- /* Inform the PPC and OCP module that a source is connected */
- tc_set_partner_role(port, PPC_DEV_SRC);
-
- if (IS_ENABLED(CONFIG_USB_PE_SM) &&
- TC_CHK_FLAG(port, TC_FLAGS_PR_SWAP_IN_PROGRESS)) {
- /* Flipping power role - Disable AutoDischargeDisconnect */
- tcpm_enable_auto_discharge_disconnect(port, 0);
-
- /* Apply Rd */
- typec_update_cc(port);
-
- /* Change role to sink */
- tc_set_power_role(port, PD_ROLE_SINK);
- tcpm_set_msg_header(port, tc[port].power_role,
- tc[port].data_role);
-
- /*
- * Maintain VCONN supply state, whether ON or OFF, and its
- * data role / usb mux connections. Do not re-enable
- * AutoDischargeDisconnect until the swap is completed
- * and tc_pr_swap_complete is called.
- */
- } else {
- /* Get connector orientation */
- tcpm_get_cc(port, &cc1, &cc2);
- tc[port].polarity = get_snk_polarity(cc1, cc2);
- pd_set_polarity(port, tc[port].polarity);
-
- tc_set_data_role(port, PD_ROLE_UFP);
-
- hook_notify(HOOK_USB_PD_CONNECT);
-
- if (IS_ENABLED(CONFIG_CHARGE_MANAGER)) {
- tc[port].typec_curr =
- usb_get_typec_current_limit(tc[port].polarity,
- cc1, cc2);
- typec_set_input_current_limit(port,
- tc[port].typec_curr, TYPE_C_VOLTAGE);
- /*
- * Start new connections as dedicated until source caps
- * are received, at which point the PE will update the
- * flag.
- */
- charge_manager_update_dualrole(port, CAP_DEDICATED);
- }
-
- /* Apply Rd */
- typec_update_cc(port);
-
- /*
- * Attached.SNK - enable AutoDischargeDisconnect
- * Do this after applying Rd to CC lines to avoid
- * TCPC_REG_FAULT_STATUS_AUTO_DISCHARGE_FAIL (b/171567398)
- */
- tcpm_enable_auto_discharge_disconnect(port, 1);
- }
-
- pd_timer_disable(port, TC_TIMER_CC_DEBOUNCE);
-
- /* Enable PD */
- if (IS_ENABLED(CONFIG_USB_PE_SM))
- tc_enable_pd(port, 1);
-
- if (TC_CHK_FLAG(port, TC_FLAGS_TS_DTS_PARTNER)) {
- tcpm_debug_accessory(port, 1);
- set_ccd_mode(port, 1);
- }
-}
-
-/*
- * Check whether Vbus has been removed on this port, accounting for some Vbus
- * debounce if FRS is enabled.
- *
- * Returns true if a new state was set and the calling run should exit.
- */
-static bool tc_snk_check_vbus_removed(const int port)
-{
- if (IS_ENABLED(CONFIG_USB_PD_FRS)) {
- /*
- * Debounce Vbus presence when FRS is enabled. Note that we may
- * lose Vbus before the FRS signal comes in to let us know
- * we're PR swapping, but we must still transition to unattached
- * within tSinkDisconnect.
- *
- * We may safely re-use the Vbus debounce timer here
- * since a PR swap would no longer be in progress when Vbus
- * removal is checked.
- */
- if (pd_check_vbus_level(port, VBUS_REMOVED)) {
- if (pd_timer_is_disabled(port,
- TC_TIMER_VBUS_DEBOUNCE)) {
- pd_timer_enable(port, TC_TIMER_VBUS_DEBOUNCE,
- PD_T_FRS_VBUS_DEBOUNCE);
- } else if (pd_timer_is_expired(port,
- TC_TIMER_VBUS_DEBOUNCE)) {
- set_state_tc(port, TC_UNATTACHED_SNK);
- return true;
- }
- } else {
- pd_timer_disable(port, TC_TIMER_VBUS_DEBOUNCE);
- }
- } else if (pd_check_vbus_level(port, VBUS_REMOVED)) {
- set_state_tc(port, TC_UNATTACHED_SNK);
- return true;
- }
-
- return false;
-}
-
-static void tc_attached_snk_run(const int port)
-{
-#ifdef CONFIG_USB_PE_SM
- /*
- * Perform Hard Reset
- */
- if (TC_CHK_FLAG(port, TC_FLAGS_HARD_RESET_REQUESTED)) {
- /*
- * Wait to clear the hard reset request until Vbus has returned
- * to default (or, if it didn't return, we transition to
- * unattached)
- */
- if (tc_perform_snk_hard_reset(port))
- TC_CLR_FLAG(port, TC_FLAGS_HARD_RESET_REQUESTED);
-
- return;
- }
-
- /*
- * From 4.5.2.2.5.2 Exiting from Attached.SNK State:
- *
- * "A port that is not a Vconn-Powered USB Device and is not in the
- * process of a USB PD PR_Swap or a USB PD Hard Reset or a USB PD
- * FR_Swap shall transition to Unattached.SNK within tSinkDisconnect
- * when Vbus falls below vSinkDisconnect for Vbus operating at or
- * below 5 V or below vSinkDisconnectPD when negotiated by USB PD
- * to operate above 5 V."
- *
- * TODO(b/149530538): Use vSinkDisconnectPD when above 5V
- */
-
- /*
- * Debounce Vbus before we drop that we are doing a PR_Swap
- */
- if (TC_CHK_FLAG(port, TC_FLAGS_PR_SWAP_IN_PROGRESS) &&
- pd_timer_is_expired(port, TC_TIMER_VBUS_DEBOUNCE)) {
- /* PR Swap is no longer in progress */
- TC_CLR_FLAG(port, TC_FLAGS_PR_SWAP_IN_PROGRESS);
- pd_timer_disable(port, TC_TIMER_VBUS_DEBOUNCE);
-
- /*
- * AutoDischargeDisconnect was turned off when we
- * hit Safe0V on SRC->SNK PR-Swap. We now are done
- * with the swap and should have Vbus, so re-enable
- * AutoDischargeDisconnect.
- */
- if (!pd_check_vbus_level(port, VBUS_REMOVED))
- tcpm_enable_auto_discharge_disconnect(port, 1);
- }
-
- /*
- * The sink will be powered off during a power role swap but we don't
- * want to trigger a disconnect.
- */
- if (!TC_CHK_FLAG(port, TC_FLAGS_POWER_OFF_SNK) &&
- !TC_CHK_FLAG(port, TC_FLAGS_PR_SWAP_IN_PROGRESS)) {
- /*
- * Detach detection
- */
- if (tc_snk_check_vbus_removed(port))
- return;
-
- if (!pe_is_explicit_contract(port))
- sink_power_sub_states(port);
- }
-
- /*
- * PD swap commands
- */
- if (tc_get_pd_enabled(port) && prl_is_running(port)) {
- /*
- * Power Role Swap
- */
- if (TC_CHK_FLAG(port, TC_FLAGS_REQUEST_PR_SWAP)) {
- /*
- * We may want to verify partner is applying Rd before
- * we swap. However, some TCPCs (such as TUSB422) will
- * not report the correct CC status before VBUS falls to
- * vSafe0V, so this will be problematic in the FRS case.
- */
- set_state_tc(port, TC_ATTACHED_SRC);
- return;
- }
-
- /*
- * Data Role Swap
- */
- if (TC_CHK_FLAG(port, TC_FLAGS_REQUEST_DR_SWAP)) {
- TC_CLR_FLAG(port, TC_FLAGS_REQUEST_DR_SWAP);
-
- /* Perform Data Role Swap */
- tc_set_data_role(port,
- tc[port].data_role == PD_ROLE_UFP ?
- PD_ROLE_DFP : PD_ROLE_UFP);
- }
-
- /*
- * VCONN Swap
- * UnorientedDebugAccessory.SRC shall not drive Vconn
- */
- if (IS_ENABLED(CONFIG_USBC_VCONN) &&
- !TC_CHK_FLAG(port, TC_FLAGS_TS_DTS_PARTNER)) {
- if (TC_CHK_FLAG(port, TC_FLAGS_REQUEST_VC_SWAP_ON)) {
- TC_CLR_FLAG(port, TC_FLAGS_REQUEST_VC_SWAP_ON);
-
- set_vconn(port, 1);
- /*
- * Inform policy engine that vconn swap is
- * complete
- */
- pe_vconn_swap_complete(port);
- } else if (TC_CHK_FLAG(port,
- TC_FLAGS_REQUEST_VC_SWAP_OFF)) {
- TC_CLR_FLAG(port, TC_FLAGS_REQUEST_VC_SWAP_OFF);
-
- set_vconn(port, 0);
- /*
- * Inform policy engine that vconn swap is
- * complete
- */
- pe_vconn_swap_complete(port);
- }
- }
-
- if (!TC_CHK_FLAG(port, TC_FLAGS_TS_DTS_PARTNER)) {
- /*
- * If the port supports Charge-Through VCONN-Powered USB
- * devices, and an explicit PD contract has failed to be
- * negotiated, the port shall query the identity of the
- * cable via USB PD on SOP’
- */
- if (!pe_is_explicit_contract(port) &&
- TC_CHK_FLAG(port, TC_FLAGS_CTVPD_DETECTED)) {
- /*
- * A port that via SOP’ has detected an
- * attached Charge-Through VCONN-Powered USB
- * device shall transition to Unattached.SRC
- * if an explicit PD contract has failed to
- * be negotiated.
- */
- /* CTVPD detected */
- set_state_tc(port, TC_UNATTACHED_SRC);
- }
- }
- }
-
-#else /* CONFIG_USB_PE_SM */
-
- /* Detach detection */
- if (tc_snk_check_vbus_removed(port))
- return;
-
- /* Run Sink Power Sub-State */
- sink_power_sub_states(port);
-#endif /* CONFIG_USB_PE_SM */
-}
-
-static void tc_attached_snk_exit(const int port)
-{
- if (!TC_CHK_FLAG(port, TC_FLAGS_REQUEST_PR_SWAP)) {
- /*
- * If supplying VCONN, the port shall cease to supply
- * it within tVCONNOFF of exiting Attached.SNK if not
- * PR swapping.
- */
- if (TC_CHK_FLAG(port, TC_FLAGS_VCONN_ON))
- set_vconn(port, 0);
-
- /*
- * Attached.SNK exit - disable AutoDischargeDisconnect
- * NOTE: This should not happen if we are suspending. It will
- * happen in tc_cc_open_entry if that is the path we are
- * taking.
- */
- if (!TC_CHK_FLAG(port, TC_FLAGS_REQUEST_SUSPEND))
- tcpm_enable_auto_discharge_disconnect(port, 0);
- }
-
- /* Clear flags after checking Vconn status */
- TC_CLR_FLAG(port, TC_FLAGS_REQUEST_PR_SWAP | TC_FLAGS_POWER_OFF_SNK);
-
- /* Stop drawing power */
- sink_stop_drawing_current(port);
-
- if (TC_CHK_FLAG(port, TC_FLAGS_TS_DTS_PARTNER))
- tcpm_debug_detach(port);
-
- pd_timer_disable(port, TC_TIMER_CC_DEBOUNCE);
- pd_timer_disable(port, TC_TIMER_TIMEOUT);
- pd_timer_disable(port, TC_TIMER_VBUS_DEBOUNCE);
-}
-
-/**
- * Unattached.SRC
- */
-static void tc_unattached_src_entry(const int port)
-{
- enum pd_data_role prev_data_role;
-
- if (get_last_state_tc(port) != TC_UNATTACHED_SNK) {
- tc_detached(port);
- print_current_state(port);
- }
-
- /*
- * We are in an unattached state and considering to be a SRC
- * searching for a SNK partner. We set the CC pull value to
- * to indicate our intent to be SRC in hopes a partner SNK
- * will is there to attach to.
- *
- * Both CC1 and CC2 pins shall be independently terminated to
- * ground through Rp.
- *
- * Restore default current limit Rp.
- *
- * Run any debug detaches needed before setting CC, as some TCPCs may
- * require we set CC Open before changing power roles with a debug
- * accessory.
- */
- tcpm_debug_detach(port);
- typec_select_pull(port, TYPEC_CC_RP);
- typec_select_src_current_limit_rp(port,
- typec_get_default_current_limit_rp(port));
- typec_update_cc(port);
-
- prev_data_role = tc[port].data_role;
- tc[port].data_role = PD_ROLE_DISCONNECTED;
-
- /*
- * When data role set events are used to enable BC1.2, then CC
- * detach events are used to notify BC1.2 that it can be powered
- * down.
- */
- bc12_role_change_handler(port, prev_data_role, tc[port].data_role);
-
- tc_set_partner_role(port, PPC_DEV_DISCONNECTED);
-
- if (IS_ENABLED(CONFIG_CHARGE_MANAGER))
- charge_manager_update_dualrole(port, CAP_UNKNOWN);
-
- if (IS_ENABLED(CONFIG_USB_PE_SM)) {
- CLR_FLAGS_ON_DISCONNECT(port);
- tc_enable_pd(port, 0);
- }
-
- pd_timer_enable(port, TC_TIMER_NEXT_ROLE_SWAP, PD_T_DRP_SRC);
-}
-
-static void tc_unattached_src_run(const int port)
-{
- enum tcpc_cc_voltage_status cc1, cc2;
-
- if (IS_ENABLED(CONFIG_USB_PE_SM)) {
- if (TC_CHK_FLAG(port, TC_FLAGS_HARD_RESET_REQUESTED)) {
- TC_CLR_FLAG(port, TC_FLAGS_HARD_RESET_REQUESTED);
- tc_set_data_role(port, PD_ROLE_DFP);
- /* Inform Policy Engine that hard reset is complete */
- pe_ps_reset_complete(port);
- }
- }
-
- if (IS_ENABLED(CONFIG_USBC_OCP)) {
- /*
- * If the port is latched off, just continue to
- * monitor for a detach.
- */
- if (usbc_ocp_is_port_latched_off(port))
- return;
- }
-
- /* Check for connection */
- tcpm_get_cc(port, &cc1, &cc2);
-
- /*
- * Transition to AttachWait.SRC when:
- * 1) The SRC.Rd state is detected on either CC1 or CC2 pin or
- * 2) The SRC.Ra state is detected on both the CC1 and CC2 pins.
- *
- * A DRP shall transition to Unattached.SNK within tDRPTransition
- * after dcSRC.DRP ∙ tDRP
- */
- if (cc_is_at_least_one_rd(cc1, cc2) || cc_is_audio_acc(cc1, cc2))
- set_state_tc(port, TC_ATTACH_WAIT_SRC);
- else if (pd_timer_is_expired(port, TC_TIMER_NEXT_ROLE_SWAP) &&
- drp_state[port] != PD_DRP_FORCE_SOURCE &&
- drp_state[port] != PD_DRP_FREEZE)
- set_state_tc(port, TC_UNATTACHED_SNK);
- /*
- * Attempt TCPC auto DRP toggle
- */
- else if (IS_ENABLED(CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE) &&
- drp_state[port] == PD_DRP_TOGGLE_ON &&
- tcpm_auto_toggle_supported(port) && cc_is_open(cc1, cc2))
- set_state_tc(port, TC_DRP_AUTO_TOGGLE);
- else if (IS_ENABLED(CONFIG_USB_PD_TCPC_LOW_POWER) &&
- (drp_state[port] == PD_DRP_FORCE_SOURCE ||
- drp_state[port] == PD_DRP_TOGGLE_OFF))
- set_state_tc(port, TC_LOW_POWER_MODE);
-}
-
-static void tc_unattached_src_exit(const int port)
-{
- pd_timer_disable(port, TC_TIMER_NEXT_ROLE_SWAP);
-}
-
-/**
- * AttachWait.SRC
- *
- * Super State Entry Actions:
- * Vconn Off
- * Place Rp on CC
- * Set power role to SOURCE
- */
-static void tc_attach_wait_src_entry(const int port)
-{
- print_current_state(port);
-
- tc[port].cc_state = PD_CC_UNSET;
-}
-
-static void tc_attach_wait_src_run(const int port)
-{
- enum tcpc_cc_voltage_status cc1, cc2;
- enum pd_cc_states new_cc_state;
-
- /* Check for connection */
- tcpm_get_cc(port, &cc1, &cc2);
-
- if (cc_is_snk_dbg_acc(cc1, cc2) && board_is_dts_port(port)) {
- /*
- * Debug accessory.
- * A debug accessory in a non-DTS port will be
- * recognized by at_least_one_rd as UFP attached.
- */
- new_cc_state = PD_CC_UFP_DEBUG_ACC;
- } else if (cc_is_at_least_one_rd(cc1, cc2)) {
- /* UFP attached */
- new_cc_state = PD_CC_UFP_ATTACHED;
- } else if (cc_is_audio_acc(cc1, cc2)) {
- /* AUDIO Accessory not supported. Just ignore */
- new_cc_state = PD_CC_UFP_AUDIO_ACC;
- } else {
- /* No UFP */
- if (drp_state[port] == PD_DRP_FORCE_SOURCE)
- set_state_tc(port, TC_UNATTACHED_SRC);
- else
- set_state_tc(port, TC_UNATTACHED_SNK);
- return;
- }
-
- /* Debounce the cc state */
- if (new_cc_state != tc[port].cc_state) {
- pd_timer_enable(port, TC_TIMER_CC_DEBOUNCE, PD_T_CC_DEBOUNCE);
- tc[port].cc_state = new_cc_state;
- return;
- }
-
- /* Wait for CC debounce */
- if (!pd_timer_is_expired(port, TC_TIMER_CC_DEBOUNCE))
- return;
-
- /*
- * The port shall transition to Attached.SRC when VBUS is at vSafe0V
- * and the SRC.Rd state is detected on exactly one of the CC1 or CC2
- * pins for at least tCCDebounce.
- *
- * If the port supports Debug Accessory Mode, it shall transition to
- * UnorientedDebugAccessory.SRC when VBUS is at vSafe0V and the SRC.Rd
- * state is detected on both the CC1 and CC2 pins for at least
- * tCCDebounce.
- */
- if (pd_check_vbus_level(port, VBUS_SAFE0V)) {
- if (new_cc_state == PD_CC_UFP_ATTACHED) {
- set_state_tc(port, TC_ATTACHED_SRC);
- return;
- } else if (new_cc_state == PD_CC_UFP_DEBUG_ACC) {
- CPRINTS("C%d: Debug accessory detected", port);
- TC_SET_FLAG(port, TC_FLAGS_TS_DTS_PARTNER);
- set_state_tc(port, TC_ATTACHED_SRC);
- return;
- }
- }
-}
-
-static void tc_attach_wait_src_exit(const int port)
-{
- pd_timer_disable(port, TC_TIMER_CC_DEBOUNCE);
-}
-
-/**
- * Attached.SRC, shared with UnorientedDebugAccessory.SRC
- */
-static void tc_attached_src_entry(const int port)
-{
- enum tcpc_cc_voltage_status cc1, cc2;
-
- print_current_state(port);
-
- pd_timer_disable(port, TC_TIMER_TIMEOUT);
-
- /*
- * Known state of attach is SRC. We need to apply this pull value
- * to make it set in hardware at the correct time but set the common
- * pull here.
- *
- * Both CC1 and CC2 pins shall be independently terminated to
- * pulled up through Rp.
- *
- * Set selected current limit in the hardware.
- */
- typec_select_pull(port, TYPEC_CC_RP);
- typec_set_source_current_limit(port, tc[port].select_current_limit_rp);
-
- if (IS_ENABLED(CONFIG_USB_PE_SM)) {
- if (TC_CHK_FLAG(port, TC_FLAGS_PR_SWAP_IN_PROGRESS)) {
- /* Change role to source */
- tc_set_power_role(port, PD_ROLE_SOURCE);
- tcpm_set_msg_header(port,
- tc[port].power_role,
- tc[port].data_role);
-
- /* Enable VBUS */
- tc_src_power_on(port);
-
- /* Apply Rp */
- typec_update_cc(port);
-
- /*
- * Maintain VCONN supply state, whether ON or OFF, and
- * its data role / usb mux connections. Do not
- * re-enable AutoDischargeDisconnect until the swap is
- * completed and tc_pr_swap_complete is called.
- */
- } else {
- /*
- * Set up CC's, Vconn, and ADD before Vbus, as per
- * Figure 4-24. DRP Initialization and Connection
- * Detection in TCPCI r2 v1.2 specification.
- */
-
- /* Get connector orientation */
- tcpm_get_cc(port, &cc1, &cc2);
- tc[port].polarity = get_src_polarity(cc1, cc2);
- pd_set_polarity(port, tc[port].polarity);
-
- /* Attached.SRC - enable AutoDischargeDisconnect */
- tcpm_enable_auto_discharge_disconnect(port, 1);
-
- /* Apply Rp */
- typec_update_cc(port);
-
- /*
- * Initial data role for sink is DFP
- * This also sets the usb mux
- */
- tc_set_data_role(port, PD_ROLE_DFP);
-
- /*
- * Start sourcing Vconn before Vbus to ensure
- * we are within USB Type-C Spec 1.4 tVconnON
- *
- * UnorientedDebugAccessory.SRC shall not drive Vconn
- */
- if (IS_ENABLED(CONFIG_USBC_VCONN) &&
- !TC_CHK_FLAG(port, TC_FLAGS_TS_DTS_PARTNER))
- set_vconn(port, 1);
-
- /* Enable VBUS */
- if (tc_src_power_on(port)) {
- /* Stop sourcing Vconn if Vbus failed */
- if (IS_ENABLED(CONFIG_USBC_VCONN))
- set_vconn(port, 0);
-
- if (IS_ENABLED(CONFIG_USBC_SS_MUX))
- usb_mux_set(port,
- USB_PD_MUX_NONE,
- USB_SWITCH_DISCONNECT,
- tc[port].polarity);
- }
-
- tc_enable_pd(port, 0);
- pd_timer_enable(port, TC_TIMER_TIMEOUT,
- MAX(PD_POWER_SUPPLY_TURN_ON_DELAY,
- PD_T_VCONN_STABLE));
- }
- } else {
- /*
- * Set up CC's, Vconn, and ADD before Vbus, as per
- * Figure 4-24. DRP Initialization and Connection
- * Detection in TCPCI r2 v1.2 specification.
- */
-
- /* Get connector orientation */
- tcpm_get_cc(port, &cc1, &cc2);
- tc[port].polarity = get_src_polarity(cc1, cc2);
- pd_set_polarity(port, tc[port].polarity);
-
- /* Attached.SRC - enable AutoDischargeDisconnect */
- tcpm_enable_auto_discharge_disconnect(port, 1);
-
- /* Apply Rp */
- typec_update_cc(port);
-
- /*
- * Initial data role for sink is DFP
- * This also sets the usb mux
- */
- tc_set_data_role(port, PD_ROLE_DFP);
-
- /*
- * Start sourcing Vconn before Vbus to ensure
- * we are within USB Type-C Spec 1.4 tVconnON
- *
- * UnorientedDebugAccessory.SRC shall not drive Vconn
- */
- if (IS_ENABLED(CONFIG_USBC_VCONN) &&
- !TC_CHK_FLAG(port, TC_FLAGS_TS_DTS_PARTNER))
- set_vconn(port, 1);
-
- /* Enable VBUS */
- if (tc_src_power_on(port)) {
- /* Stop sourcing Vconn if Vbus failed */
- if (IS_ENABLED(CONFIG_USBC_VCONN))
- set_vconn(port, 0);
-
- if (IS_ENABLED(CONFIG_USBC_SS_MUX))
- usb_mux_set(port, USB_PD_MUX_NONE,
- USB_SWITCH_DISCONNECT, tc[port].polarity);
- }
- }
-
- /* Inform PPC and OCP module that a sink is connected. */
- tc_set_partner_role(port, PPC_DEV_SNK);
-
- /* Initialize type-C supplier to seed the charge manger */
- if (IS_ENABLED(CONFIG_CHARGE_MANAGER))
- typec_set_input_current_limit(port, 0, 0);
-
- /*
- * Only notify if we're not performing a power role swap. During a
- * power role swap, the port partner is not disconnecting/connecting.
- */
- if (!TC_CHK_FLAG(port, TC_FLAGS_PR_SWAP_IN_PROGRESS)) {
- hook_notify(HOOK_USB_PD_CONNECT);
- }
-
- if (TC_CHK_FLAG(port, TC_FLAGS_TS_DTS_PARTNER)) {
- tcpm_debug_accessory(port, 1);
- set_ccd_mode(port, 1);
- }
-
- /*
- * Some TCPCs require time to correctly return CC status after
- * changing the ROLE_CONTROL register. Due to that, we have to ignore
- * CC_NONE state until PD_T_SRC_DISCONNECT delay has elapsed.
- * From the "Universal Serial Bus Type-C Cable and Connector
- * Specification" Release 2.0 paragraph 4.5.2.2.9.2:
- * The Source shall detect the SRC.Open state within tSRCDisconnect,
- * but should detect it as quickly as possible
- */
- pd_timer_enable(port, TC_TIMER_CC_DEBOUNCE, PD_T_SRC_DISCONNECT);
-}
-
-static void tc_attached_src_run(const int port)
-{
- enum tcpc_cc_voltage_status cc1, cc2;
-
- /* Check for connection */
- tcpm_get_cc(port, &cc1, &cc2);
-
- if (polarity_rm_dts(tc[port].polarity))
- cc1 = cc2;
-
- if (cc1 == TYPEC_CC_VOLT_OPEN)
- tc[port].cc_state = PD_CC_NONE;
- else
- tc[port].cc_state = PD_CC_UFP_ATTACHED;
-
- /*
- * When the SRC.Open state is detected on the monitored CC pin, a DRP
- * shall transition to Unattached.SNK unless it strongly prefers the
- * Source role. In that case, it shall transition to TryWait.SNK.
- * This transition to TryWait.SNK is needed so that two devices that
- * both prefer the Source role do not loop endlessly between Source
- * and Sink. In other words, a DRP that would enter Try.SRC from
- * AttachWait.SNK shall enter TryWait.SNK for a Sink detach from
- * Attached.SRC.
- */
- if (tc[port].cc_state == PD_CC_NONE &&
- pd_timer_is_expired(port, TC_TIMER_CC_DEBOUNCE)) {
- bool tryWait;
- enum usb_tc_state new_tc_state = TC_UNATTACHED_SNK;
-
- if (IS_ENABLED(CONFIG_USB_PD_TRY_SRC))
- tryWait = is_try_src_enabled(port) &&
- !TC_CHK_FLAG(port, TC_FLAGS_TS_DTS_PARTNER);
-
- if (drp_state[port] == PD_DRP_FORCE_SOURCE)
- new_tc_state = TC_UNATTACHED_SRC;
- else if(IS_ENABLED(CONFIG_USB_PD_TRY_SRC))
- new_tc_state = tryWait ?
- TC_TRY_WAIT_SNK : TC_UNATTACHED_SNK;
-
- set_state_tc(port, new_tc_state);
- return;
- }
-
-#ifdef CONFIG_USB_PE_SM
- /*
- * Enable PD communications after power supply has fully
- * turned on
- */
- if (pd_timer_is_expired(port, TC_TIMER_TIMEOUT)) {
- tc_enable_pd(port, 1);
- pd_timer_disable(port, TC_TIMER_TIMEOUT);
- }
-
- if (!tc_get_pd_enabled(port))
- return;
-
- /*
- * Handle Hard Reset from Policy Engine
- */
- if (TC_CHK_FLAG(port, TC_FLAGS_HARD_RESET_REQUESTED)) {
- /* Ignoring Hard Resets while the power supply is resetting.*/
- if (!pd_timer_is_disabled(port, TC_TIMER_TIMEOUT) &&
- !pd_timer_is_expired(port, TC_TIMER_TIMEOUT))
- return;
-
- if (tc_perform_src_hard_reset(port))
- TC_CLR_FLAG(port, TC_FLAGS_HARD_RESET_REQUESTED);
-
- return;
- }
-
- /*
- * PD swap commands
- */
- if (tc_get_pd_enabled(port) && prl_is_running(port)) {
- /*
- * Power Role Swap Request
- */
- if (TC_CHK_FLAG(port, TC_FLAGS_REQUEST_PR_SWAP)) {
- /* Clear TC_FLAGS_REQUEST_PR_SWAP on exit */
- return set_state_tc(port, TC_ATTACHED_SNK);
- }
-
- /*
- * Data Role Swap Request
- */
- if (TC_CHK_FLAG(port, TC_FLAGS_REQUEST_DR_SWAP)) {
- TC_CLR_FLAG(port, TC_FLAGS_REQUEST_DR_SWAP);
-
- /* Perform Data Role Swap */
- tc_set_data_role(port,
- tc[port].data_role == PD_ROLE_DFP ?
- PD_ROLE_UFP : PD_ROLE_DFP);
- }
-
- /*
- * Vconn Swap Request
- * UnorientedDebugAccessory.SRC shall not drive Vconn
- */
- if (IS_ENABLED(CONFIG_USBC_VCONN) &&
- !TC_CHK_FLAG(port, TC_FLAGS_TS_DTS_PARTNER)) {
- /*
- * VCONN Swap Request
- */
- if (TC_CHK_FLAG(port, TC_FLAGS_REQUEST_VC_SWAP_ON)) {
- TC_CLR_FLAG(port, TC_FLAGS_REQUEST_VC_SWAP_ON);
- set_vconn(port, 1);
- pe_vconn_swap_complete(port);
- } else if (TC_CHK_FLAG(port,
- TC_FLAGS_REQUEST_VC_SWAP_OFF)) {
- TC_CLR_FLAG(port, TC_FLAGS_REQUEST_VC_SWAP_OFF);
- set_vconn(port, 0);
- pe_vconn_swap_complete(port);
- }
- }
-
- /*
- * A DRP that supports Charge-Through VCONN-Powered USB Devices
- * shall transition to CTUnattached.SNK if the connected device
- * identifies itself as a Charge-Through VCONN-Powered USB
- * Device in its Discover Identity Command response.
- */
-
- /*
- * A DRP that supports Charge-Through VCONN-Powered USB Devices
- * shall transition to CTUnattached.SNK if the connected device
- * identifies itself as a Charge-Through VCONN-Powered USB
- * Device in its Discover Identity Command response.
- *
- * If it detects that it is connected to a VCONN-Powered USB
- * Device, the port may remove VBUS and discharge it to
- * vSafe0V, while continuing to remain in this state with VCONN
- * applied.
- */
- if (!TC_CHK_FLAG(port, TC_FLAGS_TS_DTS_PARTNER) &&
- TC_CHK_FLAG(port, TC_FLAGS_CTVPD_DETECTED)) {
-
- set_state_tc(port, TC_CT_UNATTACHED_SNK);
- }
- }
-#endif
-
- if (TC_CHK_FLAG(port, TC_FLAGS_UPDATE_CURRENT)) {
- TC_CLR_FLAG(port, TC_FLAGS_UPDATE_CURRENT);
- typec_set_source_current_limit(port,
- tc[port].select_current_limit_rp);
- pd_update_contract(port);
-
- /* Update Rp if no contract is present */
- if (!IS_ENABLED(CONFIG_USB_PE_SM) ||
- !pe_is_explicit_contract(port))
- typec_update_cc(port);
- }
-}
-
-static void tc_attached_src_exit(const int port)
-{
- /*
- * A port shall cease to supply VBUS within tVBUSOFF of exiting
- * Attached.SRC.
- */
- tc_src_power_off(port);
-
- if (!TC_CHK_FLAG(port, TC_FLAGS_REQUEST_PR_SWAP)) {
- /* Attached.SRC exit - disable AutoDischargeDisconnect */
- tcpm_enable_auto_discharge_disconnect(port, 0);
-
- /*
- * Disable VCONN if not power role swapping and
- * a CTVPD was not detected
- */
- if (TC_CHK_FLAG(port, TC_FLAGS_VCONN_ON) &&
- !TC_CHK_FLAG(port, TC_FLAGS_CTVPD_DETECTED))
- set_vconn(port, 0);
- }
-
- /* Clear CTVPD detected after checking for Vconn */
- TC_CLR_FLAG(port, TC_FLAGS_CTVPD_DETECTED);
-
- /* Clear PR swap flag after checking for Vconn */
- TC_CLR_FLAG(port, TC_FLAGS_REQUEST_PR_SWAP);
-
- if (TC_CHK_FLAG(port, TC_FLAGS_TS_DTS_PARTNER))
- tcpm_debug_detach(port);
-
- pd_timer_disable(port, TC_TIMER_CC_DEBOUNCE);
- pd_timer_disable(port, TC_TIMER_TIMEOUT);
-}
-
-static __maybe_unused void check_drp_connection(const int port)
-{
- enum pd_drp_next_states next_state;
- enum tcpc_cc_voltage_status cc1, cc2;
-
- TC_CLR_FLAG(port, TC_FLAGS_CHECK_CONNECTION);
-
- /* Check for connection */
- tcpm_get_cc(port, &cc1, &cc2);
-
- tc[port].drp_sink_time = get_time().val;
-
- /* Get the next toggle state */
- next_state = drp_auto_toggle_next_state(&tc[port].drp_sink_time,
- tc[port].power_role, drp_state[port], cc1, cc2,
- tcpm_auto_toggle_supported(port));
-
- if (next_state == DRP_TC_DEFAULT)
- next_state = (PD_ROLE_DEFAULT(port) == PD_ROLE_SOURCE)
- ? DRP_TC_UNATTACHED_SRC
- : DRP_TC_UNATTACHED_SNK;
-
- switch (next_state) {
- case DRP_TC_UNATTACHED_SNK:
- set_state_tc(port, TC_UNATTACHED_SNK);
- break;
- case DRP_TC_ATTACHED_WAIT_SNK:
- set_state_tc(port, TC_ATTACH_WAIT_SNK);
- break;
- case DRP_TC_UNATTACHED_SRC:
- set_state_tc(port, TC_UNATTACHED_SRC);
- break;
- case DRP_TC_ATTACHED_WAIT_SRC:
- set_state_tc(port, TC_ATTACH_WAIT_SRC);
- break;
-
-#ifdef CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE
- case DRP_TC_DRP_AUTO_TOGGLE:
- set_state_tc(port, TC_DRP_AUTO_TOGGLE);
- break;
-#endif
-
- default:
- CPRINTS("C%d: Error: DRP next state %d", port, next_state);
- break;
- }
-}
-
-/**
- * DrpAutoToggle
- */
-__maybe_unused static void tc_drp_auto_toggle_entry(const int port)
-{
- if (!IS_ENABLED(CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE))
- assert(0);
-
- print_current_state(port);
-
- /*
- * We need to ensure that we are waiting in the previous Rd or Rp state
- * for the minimum of DRP SNK or SRC so the first toggle cause by
- * transition into auto toggle doesn't violate spec timing.
- */
- pd_timer_enable(port, TC_TIMER_TIMEOUT,
- MAX(PD_T_DRP_SNK, PD_T_DRP_SRC));
-}
-
-__maybe_unused static void tc_drp_auto_toggle_run(const int port)
-{
- if (!IS_ENABLED(CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE))
- assert(0);
-
- /*
- * A timer is running, but if a connection comes in while waiting
- * then allow that to take higher priority.
- */
- if (TC_CHK_FLAG(port, TC_FLAGS_CHECK_CONNECTION))
- check_drp_connection(port);
-
- else if (!pd_timer_is_disabled(port, TC_TIMER_TIMEOUT)) {
- if (!pd_timer_is_expired(port, TC_TIMER_TIMEOUT))
- return;
-
- pd_timer_disable(port, TC_TIMER_TIMEOUT);
- tcpm_enable_drp_toggle(port);
-
- if (IS_ENABLED(CONFIG_USB_PD_TCPC_LOW_POWER)) {
- set_state_tc(port, TC_LOW_POWER_MODE);
- }
- }
-}
-
-__maybe_unused static void tc_drp_auto_toggle_exit(const int port)
-{
- pd_timer_disable(port, TC_TIMER_TIMEOUT);
-}
-
-__maybe_unused static void tc_low_power_mode_entry(const int port)
-{
- if (!IS_ENABLED(CONFIG_USB_PD_TCPC_LOW_POWER))
- assert(0);
-
- print_current_state(port);
- pd_timer_enable(port, TC_TIMER_LOW_POWER_TIME, PD_LPM_DEBOUNCE_US);
-}
-
-__maybe_unused static void tc_low_power_mode_run(const int port)
-{
- if (!IS_ENABLED(CONFIG_USB_PD_TCPC_LOW_POWER))
- assert(0);
-
- if (TC_CHK_FLAG(port, TC_FLAGS_CHECK_CONNECTION)) {
- tc_start_event_loop(port);
- if (pd_timer_is_disabled(port, TC_TIMER_LOW_POWER_EXIT_TIME)) {
- pd_timer_enable(port, TC_TIMER_LOW_POWER_EXIT_TIME,
- PD_LPM_EXIT_DEBOUNCE_US);
- } else if (pd_timer_is_expired(port,
- TC_TIMER_LOW_POWER_EXIT_TIME)) {
- CPRINTS("C%d: Exit Low Power Mode", port);
- check_drp_connection(port);
- }
- return;
- }
-
- if (tc[port].tasks_preventing_lpm)
- pd_timer_enable(port, TC_TIMER_LOW_POWER_TIME,
- PD_LPM_DEBOUNCE_US);
-
- if (pd_timer_is_expired(port, TC_TIMER_LOW_POWER_TIME)) {
- CPRINTS("C%d: TCPC Enter Low Power Mode", port);
- TC_SET_FLAG(port, TC_FLAGS_LPM_ENGAGED);
- TC_SET_FLAG(port, TC_FLAGS_LPM_TRANSITION);
- tcpm_enter_low_power_mode(port);
- TC_CLR_FLAG(port, TC_FLAGS_LPM_TRANSITION);
- tc_pause_event_loop(port);
-
- pd_timer_disable(port, TC_TIMER_LOW_POWER_EXIT_TIME);
- }
-}
-
-__maybe_unused static void tc_low_power_mode_exit(const int port)
-{
- pd_timer_disable(port, TC_TIMER_LOW_POWER_TIME);
- pd_timer_disable(port, TC_TIMER_LOW_POWER_EXIT_TIME);
-}
-
-/**
- * Try.SRC
- *
- * Super State Entry Actions:
- * Vconn Off
- * Place Rp on CC
- * Set power role to SOURCE
- */
-#ifdef CONFIG_USB_PD_TRY_SRC
-static void tc_try_src_entry(const int port)
-{
- print_current_state(port);
-
- tc[port].cc_state = PD_CC_UNSET;
- pd_timer_enable(port, TC_TIMER_TRY_WAIT_DEBOUNCE, PD_T_DRP_TRY);
- pd_timer_enable(port, TC_TIMER_TIMEOUT, PD_T_TRY_TIMEOUT);
-
- /*
- * We are a SNK but would prefer to be a SRC. Set the pull to
- * indicate we want to be a SRC and looking for a SNK.
- *
- * Both CC1 and CC2 pins shall be independently terminated to
- * ground through Rp.
- */
- typec_select_pull(port, TYPEC_CC_RP);
-
- typec_select_src_current_limit_rp(port,
- typec_get_default_current_limit_rp(port));
-
- /* Apply Rp */
- typec_update_cc(port);
-}
-
-static void tc_try_src_run(const int port)
-{
- enum tcpc_cc_voltage_status cc1, cc2;
- enum pd_cc_states new_cc_state;
-
- /* Check for connection */
- tcpm_get_cc(port, &cc1, &cc2);
-
- if ((cc1 == TYPEC_CC_VOLT_RD && cc2 != TYPEC_CC_VOLT_RD) ||
- (cc1 != TYPEC_CC_VOLT_RD && cc2 == TYPEC_CC_VOLT_RD))
- new_cc_state = PD_CC_UFP_ATTACHED;
- else
- new_cc_state = PD_CC_NONE;
-
- /* Debounce the cc state */
- if (new_cc_state != tc[port].cc_state) {
- tc[port].cc_state = new_cc_state;
- pd_timer_enable(port, TC_TIMER_CC_DEBOUNCE, PD_T_CC_DEBOUNCE);
- }
-
- /*
- * The port shall transition to Attached.SRC when the SRC.Rd state is
- * detected on exactly one of the CC1 or CC2 pins for at least
- * tTryCCDebounce.
- */
- if (new_cc_state == PD_CC_UFP_ATTACHED &&
- pd_timer_is_expired(port, TC_TIMER_CC_DEBOUNCE))
- set_state_tc(port, TC_ATTACHED_SRC);
-
- /*
- * The port shall transition to TryWait.SNK after tDRPTry and the
- * SRC.Rd state has not been detected and VBUS is within vSafe0V,
- * or after tTryTimeout and the SRC.Rd state has not been detected.
- */
- if (new_cc_state == PD_CC_NONE) {
- if ((pd_timer_is_expired(port, TC_TIMER_TRY_WAIT_DEBOUNCE) &&
- pd_check_vbus_level(port, VBUS_SAFE0V)) ||
- pd_timer_is_expired(port, TC_TIMER_TIMEOUT)) {
- set_state_tc(port, TC_TRY_WAIT_SNK);
- }
- }
-}
-
-static void tc_try_src_exit(const int port)
-{
- pd_timer_disable(port, TC_TIMER_CC_DEBOUNCE);
- pd_timer_disable(port, TC_TIMER_TIMEOUT);
- pd_timer_disable(port, TC_TIMER_TRY_WAIT_DEBOUNCE);
-}
-
-/**
- * TryWait.SNK
- *
- * Super State Entry Actions:
- * Vconn Off
- * Place Rd on CC
- * Set power role to SINK
- */
-static void tc_try_wait_snk_entry(const int port)
-{
- print_current_state(port);
-
- tc_enable_pd(port, 0);
- tc[port].cc_state = PD_CC_UNSET;
- pd_timer_enable(port, TC_TIMER_TRY_WAIT_DEBOUNCE, PD_T_CC_DEBOUNCE);
-
- /*
- * We were a SNK, tried to be a SRC and it didn't work out. Try to
- * go back to being a SNK. Set the pull to indicate we want to be
- * a SNK and looking for a SRC.
- *
- * Both CC1 and CC2 pins shall be independently terminated to
- * ground through Rd.
- */
- typec_select_pull(port, TYPEC_CC_RD);
-
- /* Apply Rd */
- typec_update_cc(port);
-}
-
-static void tc_try_wait_snk_run(const int port)
-{
- enum tcpc_cc_voltage_status cc1, cc2;
- enum pd_cc_states new_cc_state;
-
- /* Check for connection */
- tcpm_get_cc(port, &cc1, &cc2);
-
- /* We only care about CCs being open */
- if (cc1 == TYPEC_CC_VOLT_OPEN && cc2 == TYPEC_CC_VOLT_OPEN)
- new_cc_state = PD_CC_NONE;
- else
- new_cc_state = PD_CC_UNSET;
-
- /* Debounce the cc state */
- if (new_cc_state != tc[port].cc_state) {
- tc[port].cc_state = new_cc_state;
- pd_timer_enable(port, TC_TIMER_PD_DEBOUNCE, PD_T_PD_DEBOUNCE);
- }
-
- /*
- * The port shall transition to Unattached.SNK when the state of both
- * of the CC1 and CC2 pins is SNK.Open for at least tPDDebounce.
- */
- if (new_cc_state == PD_CC_NONE &&
- pd_timer_is_expired(port, TC_TIMER_PD_DEBOUNCE)) {
- set_state_tc(port, TC_UNATTACHED_SNK);
- return;
- }
-
- /*
- * The port shall transition to Attached.SNK after tCCDebounce if or
- * when VBUS is detected.
- */
- if (pd_timer_is_expired(port, TC_TIMER_TRY_WAIT_DEBOUNCE) &&
- pd_is_vbus_present(port))
- set_state_tc(port, TC_ATTACHED_SNK);
-}
-
-static void tc_try_wait_snk_exit(const int port)
-{
- pd_timer_disable(port, TC_TIMER_PD_DEBOUNCE);
- pd_timer_disable(port, TC_TIMER_TRY_WAIT_DEBOUNCE);
-}
-#endif
-
-/*
- * CTUnattached.SNK
- */
-__maybe_unused static void tc_ct_unattached_snk_entry(int port)
-{
- if (!IS_ENABLED(CONFIG_USB_PE_SM))
- assert(0);
-
- print_current_state(port);
-
- /*
- * Both CC1 and CC2 pins shall be independently terminated to
- * ground through Rd.
- */
- typec_select_pull(port, TYPEC_CC_RD);
- typec_update_cc(port);
-
- tc[port].cc_state = PD_CC_UNSET;
-
- /* Set power role to sink */
- tc_set_power_role(port, PD_ROLE_SINK);
- tcpm_set_msg_header(port, tc[port].power_role, tc[port].data_role);
-
- /*
- * The policy engine is in the disabled state. Disable PD and
- * re-enable it
- */
- tc_enable_pd(port, 0);
-
- pd_timer_enable(port, TC_TIMER_TIMEOUT, PD_POWER_SUPPLY_TURN_ON_DELAY);
-}
-
-__maybe_unused static void tc_ct_unattached_snk_run(int port)
-{
- enum tcpc_cc_voltage_status cc1;
- enum tcpc_cc_voltage_status cc2;
- enum pd_cc_states new_cc_state;
-
- if (!IS_ENABLED(CONFIG_USB_PE_SM))
- assert(0);
-
- if (!pd_timer_is_disabled(port, TC_TIMER_TIMEOUT)) {
- if (pd_timer_is_expired(port, TC_TIMER_TIMEOUT)) {
- tc_enable_pd(port, 1);
- pd_timer_disable(port, TC_TIMER_TIMEOUT);
- } else {
- return;
- }
- }
-
- /* Wait until Protocol Layer is ready */
- if (!prl_is_running(port))
- return;
-
- /*
- * Hard Reset is sent when the PE layer is disabled due to a
- * CTVPD connection.
- */
- if (TC_CHK_FLAG(port, TC_FLAGS_HARD_RESET_REQUESTED)) {
- TC_CLR_FLAG(port, TC_FLAGS_HARD_RESET_REQUESTED);
- /* Nothing to do. Just signal hard reset completion */
- pe_ps_reset_complete(port);
- }
-
- /* Check for connection */
- tcpm_get_cc(port, &cc1, &cc2);
-
- /* We only care about CCs being open */
- if (cc1 == TYPEC_CC_VOLT_OPEN && cc2 == TYPEC_CC_VOLT_OPEN)
- new_cc_state = PD_CC_NONE;
- else
- new_cc_state = PD_CC_UNSET;
-
- /* Debounce the cc state */
- if (new_cc_state != tc[port].cc_state) {
- tc[port].cc_state = new_cc_state;
- pd_timer_enable(port, TC_TIMER_CC_DEBOUNCE, PD_T_VPDDETACH);
- }
-
- /*
- * The port shall transition to Unattached.SNK if the state of
- * the CC pin is SNK.Open for tVPDDetach after VBUS is vSafe0V.
- */
- else if (pd_timer_is_expired(port, TC_TIMER_CC_DEBOUNCE)) {
- if (new_cc_state == PD_CC_NONE &&
- pd_check_vbus_level(port, VBUS_SAFE0V)) {
- set_state_tc(port, TC_UNATTACHED_SNK);
- return;
- }
- }
-
- /*
- * The port shall transition to CTAttached.SNK when VBUS is detected.
- */
- if (pd_is_vbus_present(port))
- set_state_tc(port, TC_CT_ATTACHED_SNK);
-}
-
-__maybe_unused static void tc_ct_unattached_snk_exit(int port)
-{
- pd_timer_disable(port, TC_TIMER_CC_DEBOUNCE);
- pd_timer_disable(port, TC_TIMER_TIMEOUT);
-}
-
-/**
- * CTAttached.SNK
- */
-__maybe_unused static void tc_ct_attached_snk_entry(int port)
-{
- if (!IS_ENABLED(CONFIG_USB_PE_SM))
- assert(0);
-
- print_current_state(port);
-
- /* The port shall reject a VCONN swap request. */
- TC_SET_FLAG(port, TC_FLAGS_REJECT_VCONN_SWAP);
-}
-
-__maybe_unused static void tc_ct_attached_snk_run(int port)
-{
- if (!IS_ENABLED(CONFIG_USB_PE_SM))
- assert(0);
-
- /*
- * Hard Reset is sent when the PE layer is disabled due to a
- * CTVPD connection.
- */
- if (TC_CHK_FLAG(port, TC_FLAGS_HARD_RESET_REQUESTED)) {
- TC_CLR_FLAG(port, TC_FLAGS_HARD_RESET_REQUESTED);
- /* Nothing to do. Just signal hard reset completion */
- pe_ps_reset_complete(port);
- }
-
- /*
- * A port that is not in the process of a USB PD Hard Reset shall
- * transition to CTUnattached.SNK within tSinkDisconnect when VBUS
- * falls below vSinkDisconnect
- */
- if (pd_check_vbus_level(port, VBUS_REMOVED)) {
- set_state_tc(port, TC_CT_UNATTACHED_SNK);
- return;
- }
-
- /*
- * The port shall operate in one of the Sink Power Sub-States
- * and remain within the Sink Power Sub-States, until either VBUS is
- * removed or a USB PD contract is established with the source.
- */
- if (!pe_is_explicit_contract(port))
- sink_power_sub_states(port);
-}
-
-__maybe_unused static void tc_ct_attached_snk_exit(int port)
-{
- if (!IS_ENABLED(CONFIG_USB_PE_SM))
- assert(0);
-
- /* Stop drawing power */
- sink_stop_drawing_current(port);
-
- TC_CLR_FLAG(port, TC_FLAGS_REJECT_VCONN_SWAP);
-}
-
-/**
- * Super State CC_RD
- */
-static void tc_cc_rd_entry(const int port)
-{
- /* Disable VCONN */
- if (IS_ENABLED(CONFIG_USBC_VCONN))
- set_vconn(port, 0);
-
- /* Set power role to sink */
- tc_set_power_role(port, PD_ROLE_SINK);
- tcpm_set_msg_header(port, tc[port].power_role, tc[port].data_role);
-}
-
-
-/**
- * Super State CC_RP
- */
-static void tc_cc_rp_entry(const int port)
-{
- /* Disable VCONN */
- if (IS_ENABLED(CONFIG_USBC_VCONN))
- set_vconn(port, 0);
-
- /* Set power role to source */
- tc_set_power_role(port, PD_ROLE_SOURCE);
- tcpm_set_msg_header(port, tc[port].power_role, tc[port].data_role);
-}
-
-/**
- * Super State CC_OPEN
- */
-static void tc_cc_open_entry(const int port)
-{
- /* Ensure we are not sourcing Vbus */
- tc_src_power_off(port);
-
- /* Disable VCONN */
- set_vconn(port, 0);
-
- /*
- * Ensure we disable discharging before setting CC lines to open.
- * If we were sourcing above, then we already drained Vbus. If partner
- * is sourcing Vbus they will drain Vbus if they are PD-capable. This
- * should only be done if a battery is present as a batteryless
- * device will brown out when AutoDischargeDisconnect is disabled and
- * we do not want this to happen until the set_cc open/open to make
- * sure the TCPC has managed its internal states for disconnecting
- * the only source of power it has.
- */
- if (battery_is_present())
- tcpm_enable_auto_discharge_disconnect(port, 0);
-
- /*
- * We may brown out after applying CC open, so flush console first.
- * Console flush can take a long time, so if we aren't in danger of
- * browning out, don't do it so we can meet certain compliance timing
- * requirements.
- */
- CPRINTS("C%d: Applying CC Open!", port);
- if (!battery_is_present())
- cflush();
-
- /* Remove terminations from CC */
- typec_select_pull(port, TYPEC_CC_OPEN);
- typec_update_cc(port);
-
- tc_set_partner_role(port, PPC_DEV_DISCONNECTED);
- tc_detached(port);
-}
-
-void tc_set_debug_level(enum debug_level debug_level)
-{
-#ifndef CONFIG_USB_PD_DEBUG_LEVEL
- tc_debug_level = debug_level;
-#endif
-}
-
-void tc_usb_firmware_fw_update_limited_run(int port)
-{
- TC_SET_FLAG(port, TC_FLAGS_USB_RETIMER_FW_UPDATE_LTD_RUN);
- task_wake(PD_PORT_TO_TASK_ID(port));
-}
-
-void tc_usb_firmware_fw_update_run(int port)
-{
- TC_SET_FLAG(port, TC_FLAGS_USB_RETIMER_FW_UPDATE_RUN);
- task_wake(PD_PORT_TO_TASK_ID(port));
-}
-
-void tc_run(const int port)
-{
- /*
- * If pd_set_suspend set TC_FLAGS_REQUEST_SUSPEND, go directly to
- * TC_DISABLED.
- */
- if (get_state_tc(port) != TC_DISABLED
- && TC_CHK_FLAG(port, TC_FLAGS_REQUEST_SUSPEND)) {
- /* Invalidate a contract, if there is one */
- if (IS_ENABLED(CONFIG_USB_PE_SM))
- pe_invalidate_explicit_contract(port);
-
- set_state_tc(port, TC_DISABLED);
- }
-
- /* If error recovery has been requested, transition now */
- if (TC_CHK_FLAG(port, TC_FLAGS_REQUEST_ERROR_RECOVERY)) {
- if (IS_ENABLED(CONFIG_USB_PE_SM))
- pe_invalidate_explicit_contract(port);
- set_state_tc(port, TC_ERROR_RECOVERY);
- }
-
- if (IS_ENABLED(CONFIG_USBC_RETIMER_FW_UPDATE)) {
- if (TC_CHK_FLAG(port, TC_FLAGS_USB_RETIMER_FW_UPDATE_RUN)) {
- TC_CLR_FLAG(port, TC_FLAGS_USB_RETIMER_FW_UPDATE_RUN);
- usb_retimer_fw_update_process_op_cb(port);
- }
- }
-
- run_state(port, &tc[port].ctx);
-}
-
-static void pd_chipset_resume(void)
-{
- int i;
-
- for (i = 0; i < CONFIG_USB_PD_PORT_MAX_COUNT; i++) {
- if(IS_ENABLED(CONFIG_USB_PE_SM))
- pd_resume_check_pr_swap_needed(i);
-
- pd_set_dual_role_and_event(i,
- PD_DRP_TOGGLE_ON,
- PD_EVENT_UPDATE_DUAL_ROLE
- | PD_EVENT_POWER_STATE_CHANGE);
- }
-
- CPRINTS("PD:S3->S0");
-}
-DECLARE_HOOK(HOOK_CHIPSET_RESUME, pd_chipset_resume, HOOK_PRIO_DEFAULT);
-
-static void pd_chipset_suspend(void)
-{
- int i;
-
- for (i = 0; i < CONFIG_USB_PD_PORT_MAX_COUNT; i++) {
- pd_set_dual_role_and_event(i,
- pd_get_drp_state_in_suspend(),
- PD_EVENT_UPDATE_DUAL_ROLE
- | PD_EVENT_POWER_STATE_CHANGE);
- }
-
- CPRINTS("PD:S0->S3");
-}
-DECLARE_HOOK(HOOK_CHIPSET_SUSPEND, pd_chipset_suspend, HOOK_PRIO_DEFAULT);
-
-static void pd_chipset_reset(void)
-{
- int i;
-
- if (!IS_ENABLED(CONFIG_USB_PE_SM))
- return;
-
- for (i = 0; i < board_get_usb_pd_port_count(); i++) {
- enum tcpci_msg_type tx;
-
- /* Do not notify the AP of irrelevant past Hard Resets. */
- pd_clear_events(i, PD_STATUS_EVENT_HARD_RESET);
-
- /*
- * Re-set events for SOP and SOP' discovery complete so the
- * kernel knows to consume discovery information for them.
- */
- for (tx = TCPCI_MSG_SOP; tx <= TCPCI_MSG_SOP_PRIME; tx++) {
- if (pd_get_identity_discovery(i, tx) != PD_DISC_NEEDED
- && pd_get_svids_discovery(i, tx) != PD_DISC_NEEDED
- && pd_get_modes_discovery(i, tx) != PD_DISC_NEEDED)
- pd_notify_event(i, tx == TCPCI_MSG_SOP ?
- PD_STATUS_EVENT_SOP_DISC_DONE :
- PD_STATUS_EVENT_SOP_PRIME_DISC_DONE);
- }
-
- /* Exit mode so AP can enter mode again after reset */
- if (IS_ENABLED(CONFIG_USB_PD_REQUIRE_AP_MODE_ENTRY))
- dpm_set_mode_exit_request(i);
- }
-}
-DECLARE_HOOK(HOOK_CHIPSET_RESET, pd_chipset_reset, HOOK_PRIO_DEFAULT);
-
-static void pd_chipset_startup(void)
-{
- int i;
-
- for (i = 0; i < CONFIG_USB_PD_PORT_MAX_COUNT; i++) {
- TC_SET_FLAG(i, TC_FLAGS_UPDATE_USB_MUX);
- pd_set_dual_role_and_event(i,
- pd_get_drp_state_in_suspend(),
- PD_EVENT_UPDATE_DUAL_ROLE
- | PD_EVENT_POWER_STATE_CHANGE);
- /*
- * Request port discovery to restore any
- * alt modes.
- * TODO(b/158042116): Do not start port discovery if there
- * is an existing connection.
- */
- if (IS_ENABLED(CONFIG_USB_PE_SM))
- pd_dpm_request(i, DPM_REQUEST_PORT_DISCOVERY);
- }
-
- CPRINTS("PD:S5->S3");
-}
-DECLARE_HOOK(HOOK_CHIPSET_STARTUP, pd_chipset_startup, HOOK_PRIO_DEFAULT);
-
-static void pd_chipset_shutdown(void)
-{
- int i;
-
- for (i = 0; i < CONFIG_USB_PD_PORT_MAX_COUNT; i++) {
- TC_SET_FLAG(i, TC_FLAGS_UPDATE_USB_MUX);
- pd_set_dual_role_and_event(i,
- PD_DRP_FORCE_SINK,
- PD_EVENT_UPDATE_DUAL_ROLE
- | PD_EVENT_POWER_STATE_CHANGE);
- }
-
- CPRINTS("PD:S3->S5");
-}
-DECLARE_HOOK(HOOK_CHIPSET_SHUTDOWN, pd_chipset_shutdown, HOOK_PRIO_DEFAULT);
-
-static void pd_set_power_change(void)
-{
- int i;
-
- for (i = 0; i < CONFIG_USB_PD_PORT_MAX_COUNT; i++) {
- task_set_event(PD_PORT_TO_TASK_ID(i),
- PD_EVENT_POWER_STATE_CHANGE);
- }
-}
-DECLARE_DEFERRED(pd_set_power_change);
-
-static void pd_chipset_hard_off(void)
-{
- /*
- * Wait 1 second to check our Vconn sourcing status, as the power rails
- * which were supporting it may take some time to change after entering
- * G3.
- */
- hook_call_deferred(&pd_set_power_change_data, 1 * SECOND);
-}
-DECLARE_HOOK(HOOK_CHIPSET_HARD_OFF, pd_chipset_hard_off, HOOK_PRIO_DEFAULT);
-
-/*
- * Type-C State Hierarchy (Sub-States are listed inside the boxes)
- *
- * |TC_CC_RD --------------| |TC_CC_RP ------------------------|
- * | | | |
- * | TC_UNATTACHED_SNK | | TC_UNATTACHED_SRC |
- * | TC_ATTACH_WAIT_SNK | | TC_ATTACH_WAIT_SRC |
- * | TC_TRY_WAIT_SNK | | TC_TRY_SRC |
- * |-----------------------| |---------------------------------|
- *
- * |TC_CC_OPEN -----------|
- * | |
- * | TC_DISABLED |
- * | TC_ERROR_RECOVERY |
- * |----------------------|
- *
- * TC_ATTACHED_SNK TC_ATTACHED_SRC TC_DRP_AUTO_TOGGLE TC_LOW_POWER_MODE
- *
- */
-static __const_data const struct usb_state tc_states[] = {
- /* Super States */
- [TC_CC_OPEN] = {
- .entry = tc_cc_open_entry,
- },
- [TC_CC_RD] = {
- .entry = tc_cc_rd_entry,
- },
- [TC_CC_RP] = {
- .entry = tc_cc_rp_entry,
- },
- /* Normal States */
- [TC_DISABLED] = {
- .entry = tc_disabled_entry,
- .run = tc_disabled_run,
- .exit = tc_disabled_exit,
- .parent = &tc_states[TC_CC_OPEN],
- },
- [TC_ERROR_RECOVERY] = {
- .entry = tc_error_recovery_entry,
- .run = tc_error_recovery_run,
- .exit = tc_error_recovery_exit,
- .parent = &tc_states[TC_CC_OPEN],
- },
- [TC_UNATTACHED_SNK] = {
- .entry = tc_unattached_snk_entry,
- .run = tc_unattached_snk_run,
- .exit = tc_unattached_snk_exit,
- .parent = &tc_states[TC_CC_RD],
- },
- [TC_ATTACH_WAIT_SNK] = {
- .entry = tc_attach_wait_snk_entry,
- .run = tc_attach_wait_snk_run,
- .exit = tc_attach_wait_snk_exit,
- .parent = &tc_states[TC_CC_RD],
- },
- [TC_ATTACHED_SNK] = {
- .entry = tc_attached_snk_entry,
- .run = tc_attached_snk_run,
- .exit = tc_attached_snk_exit,
- },
- [TC_UNATTACHED_SRC] = {
- .entry = tc_unattached_src_entry,
- .run = tc_unattached_src_run,
- .exit = tc_unattached_src_exit,
- .parent = &tc_states[TC_CC_RP],
- },
- [TC_ATTACH_WAIT_SRC] = {
- .entry = tc_attach_wait_src_entry,
- .run = tc_attach_wait_src_run,
- .exit = tc_attach_wait_src_exit,
- .parent = &tc_states[TC_CC_RP],
- },
- [TC_ATTACHED_SRC] = {
- .entry = tc_attached_src_entry,
- .run = tc_attached_src_run,
- .exit = tc_attached_src_exit,
- },
-#ifdef CONFIG_USB_PD_TRY_SRC
- [TC_TRY_SRC] = {
- .entry = tc_try_src_entry,
- .run = tc_try_src_run,
- .exit = tc_try_src_exit,
- .parent = &tc_states[TC_CC_RP],
- },
- [TC_TRY_WAIT_SNK] = {
- .entry = tc_try_wait_snk_entry,
- .run = tc_try_wait_snk_run,
- .exit = tc_try_wait_snk_exit,
- .parent = &tc_states[TC_CC_RD],
- },
-#endif /* CONFIG_USB_PD_TRY_SRC */
-#ifdef CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE
- [TC_DRP_AUTO_TOGGLE] = {
- .entry = tc_drp_auto_toggle_entry,
- .run = tc_drp_auto_toggle_run,
- .exit = tc_drp_auto_toggle_exit,
- },
-#endif /* CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE */
-#ifdef CONFIG_USB_PD_TCPC_LOW_POWER
- [TC_LOW_POWER_MODE] = {
- .entry = tc_low_power_mode_entry,
- .run = tc_low_power_mode_run,
- .exit = tc_low_power_mode_exit,
- },
-#endif /* CONFIG_USB_PD_TCPC_LOW_POWER */
-#ifdef CONFIG_USB_PE_SM
- [TC_CT_UNATTACHED_SNK] = {
- .entry = tc_ct_unattached_snk_entry,
- .run = tc_ct_unattached_snk_run,
- .exit = tc_ct_unattached_snk_exit,
- },
- [TC_CT_ATTACHED_SNK] = {
- .entry = tc_ct_attached_snk_entry,
- .run = tc_ct_attached_snk_run,
- .exit = tc_ct_attached_snk_exit,
- },
-#endif
-};
-
-#if defined(TEST_BUILD) && defined(USB_PD_DEBUG_LABELS)
-const struct test_sm_data test_tc_sm_data[] = {
- {
- .base = tc_states,
- .size = ARRAY_SIZE(tc_states),
- .names = tc_state_names,
- .names_size = ARRAY_SIZE(tc_state_names),
- },
-};
-const int test_tc_sm_data_size = ARRAY_SIZE(test_tc_sm_data);
-#endif