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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 /driver/tcpm/it8xxx2.c
parent08f5a1e6fc2c9467230444ac9b582dcf4d9f0068 (diff)
downloadchrome-ec-firmware-cherry-14454.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 'driver/tcpm/it8xxx2.c')
-rw-r--r--driver/tcpm/it8xxx2.c968
1 files changed, 0 insertions, 968 deletions
diff --git a/driver/tcpm/it8xxx2.c b/driver/tcpm/it8xxx2.c
deleted file mode 100644
index dd5d1231fc..0000000000
--- a/driver/tcpm/it8xxx2.c
+++ /dev/null
@@ -1,968 +0,0 @@
-/* Copyright 2020 The Chromium OS Authors. All rights reserved.
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-/* TCPM on ITE chip it8xxx2 with embedded TCPC */
-
-#include "common.h"
-#include "config.h"
-#include "console.h"
-#include "it83xx_pd.h"
-#include "ite_pd_intc.h"
-#include "registers.h"
-#include "system.h"
-#include "task.h"
-#include "timer.h"
-#include "util.h"
-#include "usb_common.h"
-#include "usb_pd.h"
-#include "usb_pd_tcpm.h"
-#include "hooks.h"
-
-#ifdef CONFIG_USB_PD_TCPMV1
-#if defined(CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE) || \
- defined(CONFIG_USB_PD_VBUS_DETECT_TCPC) || \
- defined(CONFIG_USB_PD_TCPC_LOW_POWER) || \
- defined(CONFIG_USB_PD_DISCHARGE_TCPC)
-#error "Unsupported config options of IT8xxx2 PD driver"
-#endif
-#endif
-
-#ifdef CONFIG_USB_PD_TCPMV2
-#if defined(CONFIG_USB_PD_VBUS_DETECT_TCPC) || \
- defined(CONFIG_USB_PD_DISCHARGE_TCPC)
-#error "Unsupported config options of IT8xxx2 PD driver"
-#endif
-#endif
-
-#define CPRINTS(format, args...) cprints(CC_USBPD, format, ## args)
-
-bool rx_en[IT83XX_USBPD_PHY_PORT_COUNT];
-STATIC_IF(CONFIG_USB_PD_DECODE_SOP)
- bool sop_prime_en[IT83XX_USBPD_PHY_PORT_COUNT];
-static uint8_t tx_error_status[IT83XX_USBPD_PHY_PORT_COUNT] = {0};
-
-const struct usbpd_ctrl_t usbpd_ctrl_regs[] = {
- {&IT83XX_GPIO_GPCRF4, &IT83XX_GPIO_GPCRF5, IT83XX_IRQ_USBPD0},
- {&IT83XX_GPIO_GPCRH1, &IT83XX_GPIO_GPCRH2, IT83XX_IRQ_USBPD1},
- {&IT83XX_GPIO_GPCRP0, &IT83XX_GPIO_GPCRP1, IT83XX_IRQ_USBPD2},
-};
-BUILD_ASSERT(ARRAY_SIZE(usbpd_ctrl_regs) >= IT83XX_USBPD_PHY_PORT_COUNT);
-
-/*
- * Disable cc analog and pd digital module, but only left Rd_5.1K (Not
- * Rd_DB) analog module alive to assert Rd on CCs. EC reset or calling
- * _init() are able to re-active cc and pd.
- */
-void it83xx_Rd_5_1K_only_for_hibernate(int port)
-{
- uint8_t cc_config = (port == USBPD_PORT_C ?
- IT83XX_USBPD_CC_PIN_CONFIG2 :
- IT83XX_USBPD_CC_PIN_CONFIG);
-
- /* This only apply to active PD port */
- if (*usbpd_ctrl_regs[port].cc1 == cc_config &&
- *usbpd_ctrl_regs[port].cc2 == cc_config) {
- /* Disable PD Tx and Rx PHY */
- IT83XX_USBPD_PDGCR(port) &= ~USBPD_REG_MASK_BMC_PHY;
- /* Disable CCs voltage detector */
- IT83XX_USBPD_CCGCR(port) |=
- USBPD_REG_MASK_DISABLE_CC_VOL_DETECTOR;
- /* Select Rp reserved value for not current leakage */
- IT83XX_USBPD_CCGCR(port) |=
- USBPD_REG_MASK_CC_SELECT_RP_RESERVED;
- /*
- * Connect CCs analog module (ex.UP/RD/DET/TX/RX), and
- * connect CCs 5.1K to GND, and
- * CCs assert Rd
- */
- IT83XX_USBPD_CCCSR(port) &=
- ~(USBPD_REG_MASK_CC2_DISCONNECT |
- USBPD_REG_MASK_CC2_DISCONNECT_5_1K_TO_GND |
- USBPD_REG_MASK_CC1_DISCONNECT |
- USBPD_REG_MASK_CC1_DISCONNECT_5_1K_TO_GND |
- USBPD_REG_MASK_CC1_CC2_RP_RD_SELECT);
- /* Disconnect CCs 5V tolerant */
- IT83XX_USBPD_CCPSR(port) |=
- (USBPD_REG_MASK_DISCONNECT_POWER_CC2 |
- USBPD_REG_MASK_DISCONNECT_POWER_CC1);
- /* Enable CCs analog module */
- IT83XX_USBPD_CCGCR(port) &= ~USBPD_REG_MASK_DISABLE_CC;
- }
-}
-
-static enum tcpc_cc_voltage_status it8xxx2_get_cc(enum usbpd_port port,
- enum usbpd_cc_pin cc_pin)
-{
- enum usbpd_ufp_volt_status ufp_volt;
- enum usbpd_dfp_volt_status dfp_volt;
- enum tcpc_cc_voltage_status cc_state = TYPEC_CC_VOLT_OPEN;
-
- /*
- * Because the message header bit(8) field has different definition
- * between SOP and SOP'/SOP'', in order to not happen misjudgement
- * when we receive SOP or SOP'/SOP'', the getting power role synchronize
- * with pd[port].power_role (also synchronization with tcpm_set_cc)
- * instead of message header.
- */
- /* Sink */
- if (pd_get_power_role(port) == PD_ROLE_SINK) {
- if (cc_pin == USBPD_CC_PIN_1)
- ufp_volt = USBPD_GET_SNK_COMPARE_CC1_VOLT(port);
- else
- ufp_volt = USBPD_GET_SNK_COMPARE_CC2_VOLT(port);
-
- switch (ufp_volt) {
- case USBPD_UFP_STATE_SNK_DEF:
- cc_state = TYPEC_CC_VOLT_RP_DEF;
- break;
- case USBPD_UFP_STATE_SNK_1_5:
- cc_state = TYPEC_CC_VOLT_RP_1_5;
- break;
- case USBPD_UFP_STATE_SNK_3_0:
- cc_state = TYPEC_CC_VOLT_RP_3_0;
- break;
- case USBPD_UFP_STATE_SNK_OPEN:
- cc_state = TYPEC_CC_VOLT_OPEN;
- break;
- default:
- cc_state = TYPEC_CC_VOLT_OPEN;
- break;
- }
- /* Source */
- } else {
- if (cc_pin == USBPD_CC_PIN_1)
- dfp_volt = USBPD_GET_SRC_COMPARE_CC1_VOLT(port);
- else
- dfp_volt = USBPD_GET_SRC_COMPARE_CC2_VOLT(port);
-
- switch (dfp_volt) {
- case USBPD_DFP_STATE_SRC_RA:
- cc_state = TYPEC_CC_VOLT_RA;
- break;
- case USBPD_DFP_STATE_SRC_RD:
- cc_state = TYPEC_CC_VOLT_RD;
- break;
- case USBPD_DFP_STATE_SRC_OPEN:
- cc_state = TYPEC_CC_VOLT_OPEN;
- break;
- default:
- cc_state = TYPEC_CC_VOLT_OPEN;
- break;
- }
- }
-
- return cc_state;
-}
-
-static int it8xxx2_tcpm_get_message_raw(int port, uint32_t *buf, int *head)
-{
- int cnt = PD_HEADER_CNT(IT83XX_USBPD_RMH(port));
-
- if (!USBPD_IS_RX_DONE(port))
- return EC_ERROR_UNKNOWN;
-
- /* Store header */
- *head = IT83XX_USBPD_RMH(port);
-
- /*
- * BIT[6:4] SOP type of Rx message
- * 000b=SOP, 001b=SOP', 010b=SOP", 011b=Debug SOP', 100b=Debug SOP"
- * 101b=HRDRST, 110b=CBLRST
- * 000b~100b is aligned to enum tcpci_msg_type.
- *
- */
- if (IS_ENABLED(CONFIG_USB_PD_DECODE_SOP))
- *head |= PD_HEADER_SOP((IT83XX_USBPD_MTSR0(port) >> 4) & 0x7);
-
- /* Check data message */
- if (cnt)
- memcpy(buf, (uint32_t *)&IT83XX_USBPD_RDO(port), cnt * 4);
-
- return EC_SUCCESS;
-}
-
-void it8xxx2_clear_tx_error_status(enum usbpd_port port)
-{
- tx_error_status[port] = 0;
-}
-
-void it8xxx2_get_tx_error_status(enum usbpd_port port)
-{
- tx_error_status[port] = IT83XX_USBPD_MTCR(port) &
- (USBPD_REG_MASK_TX_NOT_EN_STAT |
- USBPD_REG_MASK_TX_DISCARD_STAT |
- USBPD_REG_MASK_TX_NO_RESPONSE_STAT);
-}
-
-static enum tcpc_transmit_complete it8xxx2_tx_data(enum usbpd_port port,
- enum tcpci_msg_type type,
- uint16_t header,
- const uint32_t *buf)
-{
- int r;
- uint32_t evt;
- uint8_t length = PD_HEADER_CNT(header);
-
- /* Set message header */
- IT83XX_USBPD_MHSR0(port) = (uint8_t)header;
- IT83XX_USBPD_MHSR1(port) = (header >> 8);
-
- /*
- * Bit[2:0] Tx message type
- * 000b=SOP, 001b=SOP', 010b=SOP", 011b=Debug SOP', 100b=Debug SOP''.
- */
- IT83XX_USBPD_MTSR0(port) =
- (IT83XX_USBPD_MTSR0(port) & ~0x7) | (type & 0x7);
-
- /* Limited by PD_HEADER_CNT() */
- ASSERT(length <= 0x7);
-
- if (length)
- /* Set data */
- memcpy((uint32_t *)&IT83XX_USBPD_TDO(port), buf, length * 4);
-
- for (r = 0; r <= CONFIG_PD_RETRY_COUNT; r++) {
- /* Start Tx */
- USBPD_KICK_TX_START(port);
- evt = task_wait_event_mask(TASK_EVENT_PHY_TX_DONE,
- PD_T_TCPC_TX_TIMEOUT);
-
- /*
- * Check Tx error status (TCPC won't set multi tx errors at one
- * time transmission):
- * 1) If we doesn't enable Tx.
- * 2) If discard, means HW doesn't send the msg and resend.
- * 3) If port partner doesn't respond GoodCRC.
- * 4) If Tx timeout.
- */
- if (tx_error_status[port] || (evt & TASK_EVENT_TIMER)) {
- if (tx_error_status[port] &
- USBPD_REG_MASK_TX_NOT_EN_STAT) {
- CPRINTS("p%d TxErr: Tx EN and resend", port);
- tx_error_status[port] &=
- ~USBPD_REG_MASK_TX_NOT_EN_STAT;
- IT83XX_USBPD_PDGCR(port) |=
- USBPD_REG_MASK_TX_MESSAGE_ENABLE;
- continue;
- } else if (tx_error_status[port] &
- USBPD_REG_MASK_TX_DISCARD_STAT) {
- CPRINTS("p%d TxErr: Discard and resend", port);
- tx_error_status[port] &=
- ~USBPD_REG_MASK_TX_DISCARD_STAT;
- continue;
- } else if (tx_error_status[port] &
- USBPD_REG_MASK_TX_NO_RESPONSE_STAT) {
- /* HW had automatically resent message twice */
- tx_error_status[port] &=
- ~USBPD_REG_MASK_TX_NO_RESPONSE_STAT;
- return TCPC_TX_COMPLETE_FAILED;
- } else if (evt & TASK_EVENT_TIMER) {
- CPRINTS("p%d TxErr: Timeout", port);
- return TCPC_TX_UNSET;
- }
- } else
- break;
- }
-
- if (r > CONFIG_PD_RETRY_COUNT)
- return TCPC_TX_COMPLETE_DISCARDED;
-
- return TCPC_TX_COMPLETE_SUCCESS;
-}
-
-static enum tcpc_transmit_complete it8xxx2_send_hw_reset(enum usbpd_port port)
-{
- /* Send hard reset */
- USBPD_SEND_HARD_RESET(port);
- usleep(MSEC);
-
- if (!(IT83XX_USBPD_ISR(port) & USBPD_REG_MASK_HARD_RESET_TX_DONE))
- return TCPC_TX_COMPLETE_FAILED;
- IT83XX_USBPD_ISR(port) = USBPD_REG_MASK_HARD_RESET_TX_DONE;
-
- return TCPC_TX_COMPLETE_SUCCESS;
-}
-
-static enum tcpc_transmit_complete it8xxx2_send_cable_reset(
- enum usbpd_port port)
-{
- /* Send cable reset */
- USBPD_SEND_CABLE_RESET(port);
- usleep(MSEC);
-
- if (!(IT83XX_USBPD_ISR(port) & USBPD_REG_MASK_CABLE_RESET_TX_DONE))
- return TCPC_TX_COMPLETE_FAILED;
- IT83XX_USBPD_ISR(port) = USBPD_REG_MASK_CABLE_RESET_TX_DONE;
-
- return TCPC_TX_COMPLETE_SUCCESS;
-}
-
-static void it8xxx2_send_bist_mode2_pattern(enum usbpd_port port)
-{
- USBPD_ENABLE_SEND_BIST_MODE_2(port);
- usleep(PD_T_BIST_TRANSMIT);
- USBPD_DISABLE_SEND_BIST_MODE_2(port);
-}
-
-static void it8xxx2_enable_vconn(enum usbpd_port port, int enabled)
-{
- enum usbpd_cc_pin cc_pin;
-
- if (USBPD_GET_PULL_CC_SELECTION(port))
- cc_pin = USBPD_CC_PIN_1;
- else
- cc_pin = USBPD_CC_PIN_2;
-
- if (enabled) {
- /* Disable unused CC to become VCONN */
- if (cc_pin == USBPD_CC_PIN_1) {
- IT83XX_USBPD_CCCSR(port) = USBPD_CC2_DISCONNECTED(port);
- IT83XX_USBPD_CCPSR(port) = (IT83XX_USBPD_CCPSR(port)
- & ~USBPD_REG_MASK_DISCONNECT_POWER_CC2)
- | USBPD_REG_MASK_DISCONNECT_POWER_CC1;
- } else {
- IT83XX_USBPD_CCCSR(port) = USBPD_CC1_DISCONNECTED(port);
- IT83XX_USBPD_CCPSR(port) = (IT83XX_USBPD_CCPSR(port)
- & ~USBPD_REG_MASK_DISCONNECT_POWER_CC1)
- | USBPD_REG_MASK_DISCONNECT_POWER_CC2;
- }
- } else {
- /* Connect cc analog module (ex.UP/RD/DET/TX/RX) */
- IT83XX_USBPD_CCCSR(port) &= ~(USBPD_REG_MASK_CC2_DISCONNECT |
- USBPD_REG_MASK_CC1_DISCONNECT);
- /* Disable cc 5v tolerant */
- IT83XX_USBPD_CCPSR(port) |=
- (USBPD_REG_MASK_DISCONNECT_POWER_CC1 |
- USBPD_REG_MASK_DISCONNECT_POWER_CC2);
- }
-}
-
-static void it8xxx2_enable_cc(enum usbpd_port port, int enable)
-{
- if (enable)
- IT83XX_USBPD_CCGCR(port) &= ~USBPD_REG_MASK_DISABLE_CC;
- else
- IT83XX_USBPD_CCGCR(port) |= USBPD_REG_MASK_DISABLE_CC;
-}
-
-static void it8xxx2_set_power_role(enum usbpd_port port, int power_role)
-{
- /* 0: PD_ROLE_SINK, 1: PD_ROLE_SOURCE */
- if (power_role == PD_ROLE_SOURCE) {
- /*
- * Bit[0:6] BMC Rx threshold setting
- * 000 1000b: power neutral
- * 010 0000b: sinking power =>
- * High to low Y3Rx threshold = 0.38,
- * Low to high Y3Rx threshold = 0.54.
- * 000 0010b: sourcing power =>
- * High to low Y3Rx threshold = 0.64,
- * Low to high Y3Rx threshold = 0.79.
- */
- IT83XX_USBPD_BMCDR0(port) = USBPD_REG_MASK_BMC_RX_THRESHOLD_SRC;
- /* Bit0: source */
- IT83XX_USBPD_MHSR1(port) |= USBPD_REG_MASK_SOP_PORT_POWER_ROLE;
- /* Bit1: CC1 and CC2 select Rp */
- IT83XX_USBPD_CCCSR(port) |= USBPD_REG_MASK_CC1_CC2_RP_RD_SELECT;
- } else {
- /*
- * Bit[0:6] BMC Rx threshold setting
- * 000 1000b: power neutral
- * 010 0000b: sinking power =>
- * High to low Y3Rx threshold = 0.38,
- * Low to high Y3Rx threshold = 0.54.
- * 000 0010b: sourcing power =>
- * High to low Y3Rx threshold = 0.64,
- * Low to high Y3Rx threshold = 0.79.
- */
- IT83XX_USBPD_BMCDR0(port) = USBPD_REG_MASK_BMC_RX_THRESHOLD_SNK;
- /* Bit0: sink */
- IT83XX_USBPD_MHSR1(port) &= ~USBPD_REG_MASK_SOP_PORT_POWER_ROLE;
- /* Bit1: CC1 and CC2 select Rd */
- IT83XX_USBPD_CCCSR(port) &=
- ~USBPD_REG_MASK_CC1_CC2_RP_RD_SELECT;
- }
-}
-
-static void it8xxx2_set_data_role(enum usbpd_port port, int data_role)
-{
- /* 0: PD_ROLE_UFP 1: PD_ROLE_DFP */
- if (data_role == PD_ROLE_DFP)
- /* Bit5: DFP */
- IT83XX_USBPD_MHSR0(port) |= USBPD_REG_MASK_SOP_PORT_DATA_ROLE;
- else
- /* Bit5: UFP */
- IT83XX_USBPD_MHSR0(port) &= ~USBPD_REG_MASK_SOP_PORT_DATA_ROLE;
-}
-
-static void it8xxx2_select_polarity(enum usbpd_port port,
- enum usbpd_cc_pin cc_pin)
-{
- /* CC1/CC2 selection */
- if (cc_pin == USBPD_CC_PIN_1)
- IT83XX_USBPD_CCGCR(port) |= USBPD_REG_MASK_CC1_CC2_SELECTION;
- else
- IT83XX_USBPD_CCGCR(port) &= ~USBPD_REG_MASK_CC1_CC2_SELECTION;
-}
-
-static int it8xxx2_set_cc(enum usbpd_port port, int pull)
-{
- int enable_cc = 1;
-
- switch (pull) {
- case TYPEC_CC_RD:
- it8xxx2_set_power_role(port, PD_ROLE_SINK);
- break;
- case TYPEC_CC_RP:
- it8xxx2_set_power_role(port, PD_ROLE_SOURCE);
- break;
- case TYPEC_CC_OPEN:
- /* Power-down CC1 & CC2 to remove Rp/Rd */
- enable_cc = 0;
- break;
- default:
- return EC_ERROR_UNIMPLEMENTED;
- }
-
- it8xxx2_enable_cc(port, enable_cc);
- return EC_SUCCESS;
-}
-
-static int it8xxx2_tcpm_release(int port)
-{
- return EC_ERROR_UNIMPLEMENTED;
-}
-
-static int it8xxx2_tcpm_get_cc(int port,
- enum tcpc_cc_voltage_status *cc1,
- enum tcpc_cc_voltage_status *cc2)
-{
- *cc2 = it8xxx2_get_cc(port, USBPD_CC_PIN_2);
- *cc1 = it8xxx2_get_cc(port, USBPD_CC_PIN_1);
-
- return EC_SUCCESS;
-}
-
-static int it8xxx2_tcpm_select_rp_value(int port, int rp_sel)
-{
- uint8_t rp;
-
- /*
- * Bit[3-1]: CC output current (effective when Rp assert in 05h Bit[1])
- * 111: reserved
- * 010: 330uA outpt (3.0A)
- * 100: 180uA outpt (1.5A)
- * 110: 80uA outpt (USB default)
- */
- switch (rp_sel) {
- case TYPEC_RP_1A5:
- rp = USBPD_REG_MASK_CC_SELECT_RP_1A5;
- break;
- case TYPEC_RP_3A0:
- rp = USBPD_REG_MASK_CC_SELECT_RP_3A0;
- break;
- case TYPEC_RP_USB:
- default:
- rp = USBPD_REG_MASK_CC_SELECT_RP_DEF;
- break;
- }
- IT83XX_USBPD_CCGCR(port) = (IT83XX_USBPD_CCGCR(port) & ~(7 << 1)) | rp;
-
- return EC_SUCCESS;
-}
-
-static int it8xxx2_tcpm_set_cc(int port, int pull)
-{
- return it8xxx2_set_cc(port, pull);
-}
-
-static int it8xxx2_tcpm_set_polarity(int port, enum tcpc_cc_polarity polarity)
-{
- enum usbpd_cc_pin cc_pin =
- (polarity == POLARITY_CC1 || polarity == POLARITY_CC1_DTS) ?
- USBPD_CC_PIN_1 : USBPD_CC_PIN_2;
-
- it8xxx2_select_polarity(port, cc_pin);
-
- return EC_SUCCESS;
-}
-
-__maybe_unused static int it8xxx2_tcpm_decode_sop_prime_enable(int port,
- bool enable)
-{
- /* Save SOP'/SOP'' enable state */
- sop_prime_en[port] = enable;
-
- if (!rx_en[port])
- return EC_SUCCESS;
-
- if (enable)
- IT83XX_USBPD_PDCSR1(port) |=
- (USBPD_REG_MASK_SOPP_RX_ENABLE |
- USBPD_REG_MASK_SOPPP_RX_ENABLE);
- else
- IT83XX_USBPD_PDCSR1(port) &=
- ~(USBPD_REG_MASK_SOPP_RX_ENABLE |
- USBPD_REG_MASK_SOPPP_RX_ENABLE);
-
- return EC_SUCCESS;
-}
-
-static int it8xxx2_tcpm_set_vconn(int port, int enable)
-{
- /*
- * IT8xxx2 doesn't have integrated circuit to source CC lines for VCONN.
- * An external device like PPC or Power Switch has to source the VCONN.
- */
- if (IS_ENABLED(CONFIG_USBC_VCONN)) {
- if (enable) {
- /*
- * Unused cc will become Vconn SRC, disable cc analog
- * module (ex.UP/RD/DET/Tx/Rx) and enable 5v tolerant.
- */
- it8xxx2_enable_vconn(port, enable);
- if (IS_ENABLED(CONFIG_USB_PD_DECODE_SOP))
- /* Enable tcpc receive SOP' and SOP'' packet */
- it8xxx2_tcpm_decode_sop_prime_enable(port,
- true);
- /* Turn on Vconn power switch. */
- board_pd_vconn_ctrl(port,
- USBPD_GET_PULL_CC_SELECTION(port) ?
- USBPD_CC_PIN_2 : USBPD_CC_PIN_1,
- enable);
- } else {
- /*
- * If the pd port has previous connection and supplies
- * Vconn, then RO jumping to RW reset the system,
- * we never know which cc is the previous Vconn pin,
- * so we always turn both cc pins off when disable
- * Vconn power switch.
- */
- board_pd_vconn_ctrl(port, USBPD_CC_PIN_1, enable);
- board_pd_vconn_ctrl(port, USBPD_CC_PIN_2, enable);
- if (IS_ENABLED(CONFIG_USB_PD_DECODE_SOP))
- /* Disable tcpc receive SOP' and SOP'' packet */
- it8xxx2_tcpm_decode_sop_prime_enable(port,
- false);
- /*
- * Before disabling cc 5v tolerant, we need to make
- * sure cc voltage detector is enabled and Vconn is
- * dropped below 3.3v (>500us) to avoid the potential
- * risk of voltage fed back into Vcore.
- */
- usleep(IT83XX_USBPD_T_VCONN_BELOW_3_3V);
- /*
- * Since our cc are not Vconn SRC, enable cc analog
- * module (ex.UP/RD/DET/Tx/Rx) and disable 5v tolerant.
- */
- it8xxx2_enable_vconn(port, enable);
- }
- }
-
- return EC_SUCCESS;
-}
-
-static int it8xxx2_tcpm_set_msg_header(int port, int power_role, int data_role)
-{
- /* 0: PD_ROLE_SINK, 1: PD_ROLE_SOURCE */
- if (power_role == PD_ROLE_SOURCE)
- /* Bit0: source */
- IT83XX_USBPD_MHSR1(port) |= USBPD_REG_MASK_SOP_PORT_POWER_ROLE;
- else
- /* Bit0: sink */
- IT83XX_USBPD_MHSR1(port) &= ~USBPD_REG_MASK_SOP_PORT_POWER_ROLE;
-
- it8xxx2_set_data_role(port, data_role);
-
- return EC_SUCCESS;
-}
-
-static int it8xxx2_tcpm_set_rx_enable(int port, int enable)
-{
- /* Save rx_on */
- rx_en[port] = !!enable;
-
- if (enable) {
- IT83XX_USBPD_IMR(port) &= ~USBPD_REG_MASK_MSG_RX_DONE;
- IT83XX_USBPD_PDCSR1(port) |=
- (USBPD_REG_MASK_SOP_RX_ENABLE |
- USBPD_REG_MASK_HARD_RESET_RX_ENABLE);
- if (IS_ENABLED(CONFIG_USB_PD_DECODE_SOP))
- it8xxx2_tcpm_decode_sop_prime_enable(port,
- sop_prime_en[port]);
- } else {
- IT83XX_USBPD_IMR(port) |= USBPD_REG_MASK_MSG_RX_DONE;
- IT83XX_USBPD_PDCSR1(port) &= ~(USBPD_REG_MASK_SOP_RX_ENABLE |
- USBPD_REG_MASK_SOPP_RX_ENABLE |
- USBPD_REG_MASK_SOPPP_RX_ENABLE |
- USBPD_REG_MASK_HARD_RESET_RX_ENABLE);
- }
-
- return EC_SUCCESS;
-}
-
-static int it8xxx2_tcpm_transmit(int port,
- enum tcpci_msg_type type,
- uint16_t header,
- const uint32_t *data)
-{
- int status = TCPC_TX_COMPLETE_FAILED;
-
- switch (type) {
- case TCPCI_MSG_SOP:
- case TCPCI_MSG_SOP_PRIME:
- case TCPCI_MSG_SOP_PRIME_PRIME:
- case TCPCI_MSG_SOP_DEBUG_PRIME:
- case TCPCI_MSG_SOP_DEBUG_PRIME_PRIME:
- status = it8xxx2_tx_data(port,
- type,
- header,
- data);
- break;
- case TCPCI_MSG_TX_BIST_MODE_2:
- it8xxx2_send_bist_mode2_pattern(port);
- status = TCPC_TX_COMPLETE_SUCCESS;
- break;
- case TCPCI_MSG_TX_HARD_RESET:
- status = it8xxx2_send_hw_reset(port);
- break;
- case TCPCI_MSG_CABLE_RESET:
- status = it8xxx2_send_cable_reset(port);
- break;
- default:
- status = TCPC_TX_COMPLETE_FAILED;
- break;
- }
- pd_transmit_complete(port, status);
-
- return EC_SUCCESS;
-}
-
-static int it8xxx2_tcpm_get_chip_info(int port, int live,
- struct ec_response_pd_chip_info_v1 *chip_info)
-{
- chip_info->vendor_id = USB_VID_ITE;
- chip_info->product_id = ((IT83XX_GCTRL_CHIPID1 << 8) |
- IT83XX_GCTRL_CHIPID2);
- chip_info->device_id = IT83XX_GCTRL_CHIPVER & 0xf;
- chip_info->fw_version_number = 0xEC;
-
- return EC_SUCCESS;
-}
-
-#ifdef CONFIG_USB_PD_TCPC_LOW_POWER
-static int it8xxx2_tcpm_enter_low_power_mode(int port)
-{
- /*
- * ITE embedded TCPC SLEEP_MASK_USB_PD flag is only controlled by
- * it8xxx2 driver in it8xxx2_set_pd_sleep_mask(), and do low power
- * mode in idle_task().
- * In deep sleep mode, ITE TCPC clock is turned off, and the
- * timer every 5ms to exit the mode and wakeup PD task to run
- * (ex. change the CC lines termination).
- */
- return EC_SUCCESS;
-}
-#endif
-
-#ifdef CONFIG_USB_PD_FRS_TCPC
-static int it8xxx2_tcpm_set_frs_enable(int port, int enable)
-{
- uint8_t mask = (USBPD_REG_FAST_SWAP_REQUEST_ENABLE |
- USBPD_REG_FAST_SWAP_DETECT_ENABLE);
-
- if (enable) {
- /*
- * Disable HW auto turn off FRS requestion and detection
- * when we receive soft or hard reset.
- */
- IT83XX_USBPD_PDMSR(port) &= ~USBPD_REG_MASK_AUTO_FRS_DISABLE;
- /* W/C status */
- IT83XX_USBPD_IFS(port) = 0x33;
- /* Enable FRS detection (cc to GND) interrupt */
- IT83XX_USBPD_MIFS(port) &= ~(USBPD_REG_MASK_FAST_SWAP_ISR |
- USBPD_REG_MASK_FAST_SWAP_DETECT_ISR);
- /* Enable FRS detection (cc to GND) */
- IT83XX_USBPD_PDFSCR(port) = (IT83XX_USBPD_PDFSCR(port) & ~mask)
- | USBPD_REG_FAST_SWAP_DETECT_ENABLE;
- /*
- * TODO(b/160210457): Enable HW auto trigger
- * GPH3(port0)/GPH4(port1) output H/L after we detect FRS cc
- * low signal.
- */
- } else {
- /* Disable FRS detection (cc to GND) interrupt */
- IT83XX_USBPD_MIFS(port) |= (USBPD_REG_MASK_FAST_SWAP_ISR |
- USBPD_REG_MASK_FAST_SWAP_DETECT_ISR);
- /* Disable FRS detection and requestion */
- IT83XX_USBPD_PDFSCR(port) &= ~mask;
- /*
- * TODO(b/160210457): Disable HW auto trigger
- * GPH3(port0)/GPH4(port1) output H/L after we detect FRS cc
- * low signal.
- */
- }
-
- return EC_SUCCESS;
-}
-#endif
-
-static void it8xxx2_tcpm_switch_plug_out_type(int port)
-{
- enum tcpc_cc_voltage_status cc1, cc2;
-
- /* Check what do we and partner cc assert */
- it8xxx2_tcpm_get_cc(port, &cc1, &cc2);
-
- if ((cc1 == TYPEC_CC_VOLT_RD && cc2 == TYPEC_CC_VOLT_RD) ||
- (cc1 == TYPEC_CC_VOLT_RA && cc2 == TYPEC_CC_VOLT_RA))
- /* We're source, switch to detect audio/debug plug out. */
- IT83XX_USBPD_TCDCR(port) = (IT83XX_USBPD_TCDCR(port) &
- ~USBPD_REG_PLUG_IN_OUT_DETECT_DISABLE) |
- USBPD_REG_PLUG_OUT_DETECT_TYPE_SELECT |
- USBPD_REG_PLUG_OUT_SELECT;
- else if (cc1 == TYPEC_CC_VOLT_RD || cc2 == TYPEC_CC_VOLT_RD)
- /* We're source, switch to detect sink plug out. */
- IT83XX_USBPD_TCDCR(port) = (IT83XX_USBPD_TCDCR(port) &
- ~USBPD_REG_PLUG_IN_OUT_DETECT_DISABLE &
- ~USBPD_REG_PLUG_OUT_DETECT_TYPE_SELECT) |
- USBPD_REG_PLUG_OUT_SELECT;
- else if (cc1 >= TYPEC_CC_VOLT_RP_DEF || cc2 >= TYPEC_CC_VOLT_RP_DEF)
- /*
- * We're sink, disable detect interrupt, so messages on cc line
- * won't trigger interrupt.
- * NOTE: Plug out is detected by TCPM polling Vbus.
- */
- IT83XX_USBPD_TCDCR(port) |=
- USBPD_REG_PLUG_IN_OUT_DETECT_DISABLE;
- /*
- * If not above cases, plug in interrupt will fire again,
- * and call switch_plug_out_type() to set the right state.
- */
-}
-
-void switch_plug_out_type(enum usbpd_port port)
-{
- it8xxx2_tcpm_switch_plug_out_type(port);
-}
-
-static void it8xxx2_init(enum usbpd_port port, int role)
-{
- uint8_t cc_config = (port == USBPD_PORT_C ?
- IT83XX_USBPD_CC_PIN_CONFIG2 :
- IT83XX_USBPD_CC_PIN_CONFIG);
-
- if (IS_ENABLED(CONFIG_IT83XX_TUNE_CC_PHY)) {
- /* Tune cc Tx pre-driving time */
- const struct cc_para_t *ptr =
- board_get_cc_tuning_parameter(port);
-
- IT83XX_USBPD_CCPSR3_RISE(port) = ptr->rising_time;
- IT83XX_USBPD_CCPSR4_FALL(port) = ptr->falling_time;
- }
- /* Reset and disable HW auto generate message header */
- IT83XX_USBPD_PDMSR(port) &= ~USBPD_REG_MASK_DISABLE_AUTO_GEN_TX_HEADER;
- USBPD_SW_RESET(port);
- /* According PD version set HW auto retry count */
- IT83XX_USBPD_PDCSR0(port) = (IT83XX_USBPD_PDCSR0(port) & ~0xC0) |
- (CONFIG_PD_RETRY_COUNT << 6);
- /* Disable Rx decode */
- it8xxx2_tcpm_set_rx_enable(port, 0);
- if (IS_ENABLED(CONFIG_USB_PD_TCPMV1)) {
- uint8_t flags = 0;
- /*
- * If explicit contract is set in bbram when EC boot up, then
- * TCPMv1 set soft reset as first state instead of
- * unattached.SNK, so we need to enable BMC PHY for tx module.
- *
- * NOTE: If the platform is without battery and connects to
- * adapter, then cold reset EC, our Rd is always asserted on cc,
- * so adapter keeps providing 5v and data in BBRAM are still
- * alive.
- */
- if ((pd_get_saved_port_flags(port, &flags) == EC_SUCCESS) &&
- (flags & PD_BBRMFLG_EXPLICIT_CONTRACT))
- USBPD_ENABLE_BMC_PHY(port);
- }
- /* Disable all interrupts */
- IT83XX_USBPD_IMR(port) = 0xff;
- /* W/C status */
- IT83XX_USBPD_ISR(port) = 0xff;
- /* Enable cc voltage detector */
- IT83XX_USBPD_CCGCR(port) &= ~USBPD_REG_MASK_DISABLE_CC_VOL_DETECTOR;
- /* Select Rp value USB-DEFAULT (Rd value default connect with 5.1k) */
- it8xxx2_tcpm_select_rp_value(port, TYPEC_RP_USB);
- /* Which cc pin connect in attached state. Default to cc1 */
- it8xxx2_select_polarity(port, USBPD_CC_PIN_1);
- /* Change data role as the same power role */
- it8xxx2_set_data_role(port, role);
- /* Set default power role and assert Rp/Rd */
- it8xxx2_set_power_role(port, role);
- /* Disable vconn: connect cc analog module, disable cc 5v tolerant */
- it8xxx2_tcpm_set_vconn(port, 0);
- /* Enable tx done and hard reset detect interrupt */
- IT83XX_USBPD_IMR(port) &= ~(USBPD_REG_MASK_MSG_TX_DONE |
- USBPD_REG_MASK_HARD_RESET_DETECT);
-#ifdef IT83XX_INTC_PLUG_IN_OUT_SUPPORT
- /*
- * When tcpc detect type-c plug in (cc lines voltage change), it will
- * interrupt fw to wake pd task, so task can react immediately.
- *
- * W/C status and enable type-c plug-in detect interrupt.
- */
- IT83XX_USBPD_TCDCR(port) = (IT83XX_USBPD_TCDCR(port) &
- ~(USBPD_REG_PLUG_IN_OUT_DETECT_DISABLE |
- USBPD_REG_PLUG_OUT_SELECT)) |
- USBPD_REG_PLUG_IN_OUT_DETECT_STAT;
-#endif
- /* Set cc1/cc2 pins alternate mode */
- *usbpd_ctrl_regs[port].cc1 = cc_config;
- *usbpd_ctrl_regs[port].cc2 = cc_config;
- task_clear_pending_irq(usbpd_ctrl_regs[port].irq);
-#ifdef CONFIG_ZEPHYR
- irq_connect_dynamic(usbpd_ctrl_regs[port].irq, 0,
- (void (*)(const void *))chip_pd_irq, (void *)port, 0);
-#endif
- task_enable_irq(usbpd_ctrl_regs[port].irq);
- USBPD_START(port);
- /*
- * Disconnect CCs Rd_DB from GND
- * NOTE: CCs assert both Rd_5.1k and Rd_DB from USBPD_START() to
- * disconnect Rd_DB about 1.5us.
- */
- IT83XX_USBPD_CCPSR(port) |= (USBPD_REG_MASK_DISCONNECT_5_1K_CC2_DB |
- USBPD_REG_MASK_DISCONNECT_5_1K_CC1_DB);
-}
-
-static int it8xxx2_tcpm_init(int port)
-{
- /* Initialize physical layer */
- it8xxx2_init(port, PD_ROLE_DEFAULT(port));
-
- return EC_SUCCESS;
-}
-
-static void it8xxx2_set_pd_sleep_mask(int port)
-{
- int i;
- bool prevent_deep_sleep = false;
-
- /*
- * Set SLEEP_MASK_USB_PD for deep sleep mode:
- * 1.Enable deep sleep mode, when all ITE ports are in Unattach.SRC/SNK
- * state (HOOK_DISCONNECT called) and other ports aren't pd_capable().
- * 2.Disable deep sleep mode, when one of ITE port is in Attach.SRC/SNK
- * state (HOOK_CONNECT called) or one of other ports is pd_capable().
- */
- for (i = 0; i < CONFIG_USB_PD_ITE_ACTIVE_PORT_COUNT; ++i) {
- if (IT83XX_USBPD_PDGCR(i) & USBPD_REG_MASK_BMC_PHY) {
- prevent_deep_sleep = true;
- break;
- }
- }
-
- /*
- * Check if any other ports have a PD port partner connected. Deep
- * sleep is forbidden if any PD port partner is connected. Above, we
- * only checked for the ITE ports.
- */
- if (!prevent_deep_sleep) {
- for (; i < board_get_usb_pd_port_count(); i++)
- if (pd_capable(i))
- prevent_deep_sleep = true;
- }
-
- if (prevent_deep_sleep)
- disable_sleep(SLEEP_MASK_USB_PD);
- else
- enable_sleep(SLEEP_MASK_USB_PD);
-}
-
-static void it8xxx2_tcpm_hook_connect(void)
-{
- int port = TASK_ID_TO_PD_PORT(task_get_current());
-
-#ifdef CONFIG_USB_PD_TCPMV2
- /*
- * There are five cases that hook_connect() be called by TCPMv2:
- * 1)AttachWait.SNK -> Attached.SNK: disable detect interrupt.
- * 2)AttachWait.SRC -> Attached.SRC: enable detect plug out.
- * 3)AttachWait.SNK -> Try.SRC -> TryWait.SNK -> Attached.SNK: we do
- * Try.SRC fail, disable detect interrupt.
- * 4)AttachWait.SNK -> Try.SRC -> Attached.SRC: we do Try.SRC
- * successfully, need to switch to detect plug out.
- * 5)Attached.SRC -> TryWait.SNK -> Attached.SNK: partner do Try.SRC
- * successfully, disable detect interrupt.
- *
- * NOTE: Try.SRC and TryWait.SNK are embedded respectively in
- * SRC_DISCONNECT and SNK_DISCONNECT in TCPMv1. Every time we go to
- * Try.SRC/TryWait.SNK state, the plug in interrupt will be enabled and
- * fire for 3), 4), 5) cases, then set correctly for the SRC detect plug
- * out or the SNK disable detect, so TCPMv1 needn't this.
- */
- it8xxx2_tcpm_switch_plug_out_type(port);
-#endif
- /* Enable PD PHY Tx and Rx module since type-c has connected. */
- USBPD_ENABLE_BMC_PHY(port);
- it8xxx2_set_pd_sleep_mask(port);
-}
-
-DECLARE_HOOK(HOOK_USB_PD_CONNECT, it8xxx2_tcpm_hook_connect, HOOK_PRIO_DEFAULT);
-
-static void it8xxx2_tcpm_hook_disconnect(void)
-{
- int port = TASK_ID_TO_PD_PORT(task_get_current());
-
- if (IS_ENABLED(IT83XX_INTC_PLUG_IN_OUT_SUPPORT))
- /*
- * Switch to detect plug in and enable detect plug in interrupt,
- * since pd task has detected a type-c physical disconnected.
- */
- IT83XX_USBPD_TCDCR(port) &= ~(USBPD_REG_PLUG_OUT_SELECT |
- USBPD_REG_PLUG_IN_OUT_DETECT_DISABLE);
-
- /* Exit BIST test data mode */
- USBPD_SW_RESET(port);
-
- /*
- * Init rx status and disable PD PHY Tx and Rx module for better power
- * consumption since type-c has disconnected.
- */
- rx_en[port] = 0;
- if (IS_ENABLED(CONFIG_USB_PD_DECODE_SOP))
- sop_prime_en[port] = 0;
- USBPD_DISABLE_BMC_PHY(port);
- it8xxx2_set_pd_sleep_mask(port);
-}
-
-DECLARE_HOOK(HOOK_USB_PD_DISCONNECT, it8xxx2_tcpm_hook_disconnect,
- HOOK_PRIO_DEFAULT);
-
-const struct tcpm_drv it8xxx2_tcpm_drv = {
- .init = &it8xxx2_tcpm_init,
- .release = &it8xxx2_tcpm_release,
- .get_cc = &it8xxx2_tcpm_get_cc,
- .select_rp_value = &it8xxx2_tcpm_select_rp_value,
- .set_cc = &it8xxx2_tcpm_set_cc,
- .set_polarity = &it8xxx2_tcpm_set_polarity,
-#ifdef CONFIG_USB_PD_DECODE_SOP
- .sop_prime_enable = &it8xxx2_tcpm_decode_sop_prime_enable,
-#endif
- .set_vconn = &it8xxx2_tcpm_set_vconn,
- .set_msg_header = &it8xxx2_tcpm_set_msg_header,
- .set_rx_enable = &it8xxx2_tcpm_set_rx_enable,
- .get_message_raw = &it8xxx2_tcpm_get_message_raw,
- .transmit = &it8xxx2_tcpm_transmit,
-#ifdef CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE
- .drp_toggle = NULL,
-#endif
- .get_chip_info = &it8xxx2_tcpm_get_chip_info,
-#ifdef CONFIG_USB_PD_TCPC_LOW_POWER
- .enter_low_power_mode = &it8xxx2_tcpm_enter_low_power_mode,
-#endif
-#ifdef CONFIG_USB_PD_FRS_TCPC
- .set_frs_enable = &it8xxx2_tcpm_set_frs_enable,
-#endif
-};