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https://github.com/Telecominfraproject/OpenCellular.git
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58719e3073
Use the PDCMD task to handle PD MCU interrupts, and use it to trigger the tcpc_alert(). Note this fixes bug on Glados and Oak that could cause watchdog reset because tcpc_alert() which uses i2c to talk to tcpc was called from hooks task and can delay tickling watchdog. BUG=chrome-os-partner:40920 BRANCH=none TEST=load on glados and plug zinger into both ports many times. make sure we get a stable contract and no watchdog reset. Change-Id: I37625fae2ca0057d2ee8fa1eea6974f2d26d1b91 Signed-off-by: Alec Berg <alecaberg@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/275296 Reviewed-by: Scott Collyer <scollyer@chromium.org> Reviewed-by: Shawn N <shawnn@chromium.org>
145 lines
3.8 KiB
C
145 lines
3.8 KiB
C
/* Copyright (c) 2014 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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/* Host command module for PD MCU */
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#include "charge_state.h"
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#include "common.h"
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#include "console.h"
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#include "host_command.h"
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#include "lightbar.h"
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#include "panic.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 "usb_pd_tcpm.h"
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#include "util.h"
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#define CPRINTS(format, args...) cprints(CC_PD_HOST_CMD, format, ## args)
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#define TASK_EVENT_EXCHANGE_PD_STATUS TASK_EVENT_CUSTOM(1)
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#ifdef CONFIG_USB_PD_MCU_CHG_CTRL
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/* By default allow 5V charging only for the dead battery case */
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static enum pd_charge_state charge_state = PD_CHARGE_5V;
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#define CHARGE_PORT_UNINITIALIZED -2
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static int charge_port = CHARGE_PORT_UNINITIALIZED;
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int pd_get_active_charge_port(void)
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{
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return charge_port;
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}
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#endif
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void host_command_pd_send_status(enum pd_charge_state new_chg_state)
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{
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#ifdef CONFIG_USB_PD_MCU_CHG_CTRL
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/* Update PD MCU charge state if necessary */
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if (new_chg_state != PD_CHARGE_NO_CHANGE)
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charge_state = new_chg_state;
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#endif
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/* Wake PD HC task to send status */
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task_set_event(TASK_ID_PDCMD, TASK_EVENT_EXCHANGE_PD_STATUS, 0);
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}
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static void pd_exchange_status(void)
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{
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struct ec_params_pd_status ec_status;
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struct ec_response_pd_status pd_status;
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int rv = 0;
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#ifdef CONFIG_HOSTCMD_PD_PANIC
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static int pd_in_rw;
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#endif
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/* Send PD charge state and battery state of charge */
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#ifdef CONFIG_USB_PD_MCU_CHG_CTRL
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ec_status.charge_state = charge_state;
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#endif
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if (charge_get_flags() & CHARGE_FLAG_BATT_RESPONSIVE)
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ec_status.batt_soc = charge_get_percent();
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else
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ec_status.batt_soc = -1;
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rv = pd_host_command(EC_CMD_PD_EXCHANGE_STATUS, 1, &ec_status,
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sizeof(struct ec_params_pd_status), &pd_status,
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sizeof(struct ec_response_pd_status));
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/* If PD doesn't support new command version, try old version */
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if (rv == -EC_RES_INVALID_VERSION)
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rv = pd_host_command(EC_CMD_PD_EXCHANGE_STATUS, 0, &ec_status,
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sizeof(struct ec_params_pd_status), &pd_status,
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sizeof(struct ec_response_pd_status));
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if (rv < 0) {
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CPRINTS("Host command to PD MCU failed");
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return;
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}
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#ifdef CONFIG_HOSTCMD_PD_PANIC
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/*
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* Check if PD MCU is in RW. If PD MCU was in RW and is now in RO
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* AND it did not sysjump to RO, then it must have crashed, and
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* therefore we should panic as well.
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*/
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if (pd_status.status & PD_STATUS_IN_RW) {
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pd_in_rw = 1;
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} else if (pd_in_rw &&
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!(pd_status.status & PD_STATUS_JUMPED_TO_IMAGE)) {
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panic_printf("PD crash");
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software_panic(PANIC_SW_PD_CRASH, 0);
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}
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#endif
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#ifdef CONFIG_USB_PD_MCU_CHG_CTRL
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#ifdef HAS_TASK_LIGHTBAR
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/*
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* If charge port has changed, and it was initialized, then show
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* battery status on lightbar.
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*/
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if (pd_status.active_charge_port != charge_port) {
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if (charge_port != CHARGE_PORT_UNINITIALIZED) {
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charge_port = pd_status.active_charge_port;
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lightbar_sequence(LIGHTBAR_TAP);
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} else {
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charge_port = pd_status.active_charge_port;
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}
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}
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#else
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/* Store the active charge port */
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charge_port = pd_status.active_charge_port;
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#endif
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/* Set input current limit */
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rv = charge_set_input_current_limit(MAX(pd_status.curr_lim_ma,
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CONFIG_CHARGER_INPUT_CURRENT));
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if (rv < 0)
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CPRINTS("Failed to set input current limit from PD MCU");
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#endif /* CONFIG_USB_PD_MCU_CHG_CTRL */
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/* If PD is signalling host event, then pass it up to AP */
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if (pd_status.status & PD_STATUS_HOST_EVENT)
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host_set_single_event(EC_HOST_EVENT_PD_MCU);
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#ifdef CONFIG_USB_PD_TCPM_TCPCI
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tcpc_alert();
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#endif
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}
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void pd_command_task(void)
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{
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/* On startup exchange status with the PD */
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pd_exchange_status();
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while (1) {
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/* Wait for the next command event */
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int evt = task_wait_event(-1);
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/* Process event to send status to PD */
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if (evt & TASK_EVENT_EXCHANGE_PD_STATUS)
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pd_exchange_status();
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}
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}
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