381 lines
9.3 KiB
C
381 lines
9.3 KiB
C
/* Copyright 2015 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "atomic.h"
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#include "charge_manager.h"
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#include "common.h"
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#include "console.h"
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#include "gpio.h"
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#include "hooks.h"
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#include "host_command.h"
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#include "registers.h"
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#include "system.h"
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#include "task.h"
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#include "timer.h"
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#include "util.h"
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#include "usb_mux.h"
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#include "usb_pd.h"
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#define CPRINTF(format, args...) cprintf(CC_USBPD, format, ## args)
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#define CPRINTS(format, args...) cprints(CC_USBPD, format, ## args)
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#define PDO_FIXED_FLAGS (PDO_FIXED_DUAL_ROLE | PDO_FIXED_DATA_SWAP |\
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PDO_FIXED_COMM_CAP)
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/* TODO: fill in correct source and sink capabilities */
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const uint32_t pd_src_pdo[] = {
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PDO_FIXED(5000, 1500, PDO_FIXED_FLAGS),
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};
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const int pd_src_pdo_cnt = ARRAY_SIZE(pd_src_pdo);
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const uint32_t pd_snk_pdo[] = {
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PDO_FIXED(5000, 500, PDO_FIXED_FLAGS),
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PDO_BATT(4750, 21000, 15000),
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PDO_VAR(4750, 21000, 3000),
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};
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const int pd_snk_pdo_cnt = ARRAY_SIZE(pd_snk_pdo);
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int pd_is_valid_input_voltage(int mv)
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{
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return 1;
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}
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void pd_transition_voltage(int idx)
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{
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/* No-operation: we are always 5V */
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}
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int pd_set_power_supply_ready(int port)
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{
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/* Disable charging */
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gpio_set_level(port ? GPIO_USB_C1_CHARGE_EN_L :
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GPIO_USB_C0_CHARGE_EN_L, 1);
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/* Provide VBUS */
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gpio_set_level(port ? GPIO_USB_C1_5V_EN :
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GPIO_USB_C0_5V_EN, 1);
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/* notify host of power info change */
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pd_send_host_event(PD_EVENT_POWER_CHANGE);
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return EC_SUCCESS; /* we are ready */
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}
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void pd_power_supply_reset(int port)
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{
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/* Disable VBUS */
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gpio_set_level(port ? GPIO_USB_C1_5V_EN :
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GPIO_USB_C0_5V_EN, 0);
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/* notify host of power info change */
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pd_send_host_event(PD_EVENT_POWER_CHANGE);
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}
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int pd_snk_is_vbus_provided(int port)
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{
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return !gpio_get_level(port ? GPIO_USB_C1_VBUS_WAKE_L :
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GPIO_USB_C0_VBUS_WAKE_L);
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}
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int pd_board_checks(void)
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{
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return EC_SUCCESS;
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}
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int pd_check_power_swap(int port)
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{
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/*
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* Allow power swap as long as we are acting as a dual role device,
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* otherwise assume our role is fixed (not in S0 or console command
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* to fix our role).
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*/
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return pd_get_dual_role(port) == PD_DRP_TOGGLE_ON ? 1 : 0;
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}
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int pd_check_data_swap(int port,
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enum pd_data_role data_role)
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{
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/* Allow data swap if we are a UFP, otherwise don't allow */
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return (data_role == PD_ROLE_UFP) ? 1 : 0;
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}
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int pd_check_vconn_swap(int port)
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{
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/* in G3, do not allow vconn swap since pp5000_A rail is off */
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return gpio_get_level(GPIO_PMIC_SLP_SUS_L);
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}
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void pd_execute_data_swap(int port,
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enum pd_data_role data_role)
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{
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/* Do nothing */
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}
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void pd_check_pr_role(int port,
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enum pd_power_role pr_role,
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int flags)
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{
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/*
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* If partner is dual-role power and dualrole toggling is on, consider
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* if a power swap is necessary.
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*/
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if ((flags & PD_FLAGS_PARTNER_DR_POWER) &&
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pd_get_dual_role(port) == PD_DRP_TOGGLE_ON) {
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/*
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* If we are a sink and partner is not unconstrained, then
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* swap to become a source. If we are source and partner is
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* unconstrained, swap to become a sink.
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*/
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int partner_unconstrained = flags & PD_FLAGS_PARTNER_UNCONSTR;
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if ((!partner_unconstrained && pr_role == PD_ROLE_SINK) ||
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(partner_unconstrained && pr_role == PD_ROLE_SOURCE))
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pd_request_power_swap(port);
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}
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}
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void pd_check_dr_role(int port,
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enum pd_data_role dr_role,
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int flags)
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{
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/* If UFP, try to switch to DFP */
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if ((flags & PD_FLAGS_PARTNER_DR_DATA) && dr_role == PD_ROLE_UFP)
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pd_request_data_swap(port);
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}
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/* ----------------- Vendor Defined Messages ------------------ */
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const struct svdm_response svdm_rsp = {
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.identity = NULL,
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.svids = NULL,
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.modes = NULL,
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};
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int pd_custom_vdm(int port, int cnt, uint32_t *payload,
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uint32_t **rpayload)
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{
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int cmd = PD_VDO_CMD(payload[0]);
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uint16_t dev_id = 0;
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int is_rw;
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/* make sure we have some payload */
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if (cnt == 0)
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return 0;
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switch (cmd) {
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case VDO_CMD_VERSION:
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/* guarantee last byte of payload is null character */
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*(payload + cnt - 1) = 0;
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CPRINTF("version: %s\n", (char *)(payload+1));
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break;
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case VDO_CMD_READ_INFO:
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case VDO_CMD_SEND_INFO:
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/* copy hash */
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if (cnt == 7) {
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dev_id = VDO_INFO_HW_DEV_ID(payload[6]);
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is_rw = VDO_INFO_IS_RW(payload[6]);
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CPRINTF("DevId:%d.%d SW:%d RW:%d\n",
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HW_DEV_ID_MAJ(dev_id),
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HW_DEV_ID_MIN(dev_id),
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VDO_INFO_SW_DBG_VER(payload[6]),
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is_rw);
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} else if (cnt == 6) {
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/* really old devices don't have last byte */
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pd_dev_store_rw_hash(port, dev_id, payload + 1,
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EC_IMAGE_UNKNOWN);
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}
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break;
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case VDO_CMD_CURRENT:
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CPRINTF("Current: %dmA\n", payload[1]);
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break;
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case VDO_CMD_FLIP:
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usb_mux_flip(port);
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break;
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#ifdef CONFIG_USB_PD_LOGGING
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case VDO_CMD_GET_LOG:
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pd_log_recv_vdm(port, cnt, payload);
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break;
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#endif /* CONFIG_USB_PD_LOGGING */
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}
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return 0;
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}
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#ifdef CONFIG_USB_PD_ALT_MODE_DFP
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static int dp_flags[CONFIG_USB_PD_PORT_MAX_COUNT];
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/* DP Status VDM as returned by UFP */
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static uint32_t dp_status[CONFIG_USB_PD_PORT_MAX_COUNT];
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static void svdm_safe_dp_mode(int port)
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{
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/* make DP interface safe until configure */
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dp_flags[port] = 0;
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dp_status[port] = 0;
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usb_mux_set(port, USB_PD_MUX_NONE,
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USB_SWITCH_CONNECT, pd_get_polarity(port));
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}
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static int svdm_enter_dp_mode(int port, uint32_t mode_caps)
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{
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/* Only enter mode if device is DFP_D capable */
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if (mode_caps & MODE_DP_SNK) {
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svdm_safe_dp_mode(port);
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return 0;
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}
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return -1;
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}
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static int svdm_dp_status(int port, uint32_t *payload)
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{
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int opos = pd_alt_mode(port, TCPC_TX_SOP, USB_SID_DISPLAYPORT);
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payload[0] = VDO(USB_SID_DISPLAYPORT, 1,
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CMD_DP_STATUS | VDO_OPOS(opos));
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payload[1] = VDO_DP_STATUS(0, /* HPD IRQ ... not applicable */
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0, /* HPD level ... not applicable */
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0, /* exit DP? ... no */
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0, /* usb mode? ... no */
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0, /* multi-function ... no */
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(!!(dp_flags[port] & DP_FLAGS_DP_ON)),
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0, /* power low? ... no */
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(!!(dp_flags[port] & DP_FLAGS_DP_ON)));
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return 2;
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};
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static int svdm_dp_config(int port, uint32_t *payload)
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{
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int opos = pd_alt_mode(port, TCPC_TX_SOP, USB_SID_DISPLAYPORT);
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int mf_pref = PD_VDO_DPSTS_MF_PREF(dp_status[port]);
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int pin_mode = pd_dfp_dp_get_pin_mode(port, dp_status[port]);
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if (!pin_mode)
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return 0;
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usb_mux_set(port, mf_pref ? USB_PD_MUX_DOCK : USB_PD_MUX_DP_ENABLED,
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USB_SWITCH_CONNECT, pd_get_polarity(port));
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payload[0] = VDO(USB_SID_DISPLAYPORT, 1,
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CMD_DP_CONFIG | VDO_OPOS(opos));
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payload[1] = VDO_DP_CFG(pin_mode, /* pin mode */
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1, /* DPv1.3 signaling */
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2); /* UFP connected */
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return 2;
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};
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#define PORT_TO_HPD(port) ((port) ? GPIO_USB_C1_DP_HPD : GPIO_USB_C0_DP_HPD)
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__override void svdm_dp_post_config(int port)
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{
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dp_flags[port] |= DP_FLAGS_DP_ON;
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if (!(dp_flags[port] & DP_FLAGS_HPD_HI_PENDING))
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return;
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gpio_set_level(PORT_TO_HPD(port), 1);
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/* set the minimum time delay (2ms) for the next HPD IRQ */
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svdm_hpd_deadline[port] = get_time().val + HPD_USTREAM_DEBOUNCE_LVL;
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}
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__override int svdm_dp_attention(int port, uint32_t *payload)
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{
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int cur_lvl;
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int lvl = PD_VDO_DPSTS_HPD_LVL(payload[1]);
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int irq = PD_VDO_DPSTS_HPD_IRQ(payload[1]);
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enum gpio_signal hpd = PORT_TO_HPD(port);
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cur_lvl = gpio_get_level(hpd);
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dp_status[port] = payload[1];
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/* Its initial DP status message prior to config */
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if (!(dp_flags[port] & DP_FLAGS_DP_ON)) {
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if (lvl)
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dp_flags[port] |= DP_FLAGS_HPD_HI_PENDING;
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return 1;
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}
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if (irq & cur_lvl) {
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uint64_t now = get_time().val;
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/* wait for the minimum spacing between IRQ_HPD if needed */
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if (now < svdm_hpd_deadline[port])
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usleep(svdm_hpd_deadline[port] - now);
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/* generate IRQ_HPD pulse */
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gpio_set_level(hpd, 0);
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usleep(HPD_DSTREAM_DEBOUNCE_IRQ);
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gpio_set_level(hpd, 1);
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/* set the minimum time delay (2ms) for the next HPD IRQ */
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svdm_hpd_deadline[port] = get_time().val +
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HPD_USTREAM_DEBOUNCE_LVL;
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} else if (irq & !cur_lvl) {
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CPRINTF("ERR:HPD:IRQ&LOW\n");
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return 0; /* nak */
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} else {
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gpio_set_level(hpd, lvl);
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/* set the minimum time delay (2ms) for the next HPD IRQ */
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svdm_hpd_deadline[port] = get_time().val +
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HPD_USTREAM_DEBOUNCE_LVL;
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}
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/* ack */
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return 1;
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}
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static void svdm_exit_dp_mode(int port)
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{
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svdm_safe_dp_mode(port);
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gpio_set_level(PORT_TO_HPD(port), 0);
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}
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static int svdm_enter_gfu_mode(int port, uint32_t mode_caps)
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{
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/* Always enter GFU mode */
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return 0;
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}
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static void svdm_exit_gfu_mode(int port)
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{
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}
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static int svdm_gfu_status(int port, uint32_t *payload)
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{
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/*
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* This is called after enter mode is successful, send unstructured
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* VDM to read info.
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*/
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pd_send_vdm(port, USB_VID_GOOGLE, VDO_CMD_READ_INFO, NULL, 0);
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return 0;
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}
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static int svdm_gfu_config(int port, uint32_t *payload)
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{
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return 0;
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}
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static int svdm_gfu_attention(int port, uint32_t *payload)
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{
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return 0;
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}
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const struct svdm_amode_fx supported_modes[] = {
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{
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.svid = USB_SID_DISPLAYPORT,
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.enter = &svdm_enter_dp_mode,
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.status = &svdm_dp_status,
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.config = &svdm_dp_config,
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.post_config = &svdm_dp_post_config,
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.attention = &svdm_dp_attention,
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.exit = &svdm_exit_dp_mode,
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},
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{
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.svid = USB_VID_GOOGLE,
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.enter = &svdm_enter_gfu_mode,
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.status = &svdm_gfu_status,
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.config = &svdm_gfu_config,
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.attention = &svdm_gfu_attention,
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.exit = &svdm_exit_gfu_mode,
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}
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};
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const int supported_modes_cnt = ARRAY_SIZE(supported_modes);
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#endif /* CONFIG_USB_PD_ALT_MODE_DFP */
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