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https://github.com/Telecominfraproject/OpenCellular.git
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1933fb8ff7
Add host event for PD up to AP. The PD toggles a gpio line to EC causing an interrupt on EC. The EC then sends host command down to PD MCU to get its status. There is a new status bit for PD host event, so when EC see's the PD host event status bit, it sends a PD host event to the AP. There is currently only one host event for PD to AP. BUG=chrome-os-partner:31361 BRANCH=none TEST=added PD console command pdevent, which initiates the host event. when sent, verified on EC that it sets the correct host event bit using hostevent console command Change-Id: If1a59a3232e2f9a49f272c6dee5319254d87b9a9 Signed-off-by: Alec Berg <alecaberg@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/213371 Reviewed-by: Randall Spangler <rspangler@chromium.org>
76 lines
1.8 KiB
C
76 lines
1.8 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 "task.h"
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#include "timer.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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void host_command_pd_send_status(void)
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{
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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, tries = 0;
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/* Send battery state of charge */
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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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/* Try 3 times to get the PD MCU status. */
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while (tries++ < 3) {
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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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break;
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task_wait_event(500*MSEC);
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}
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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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/* 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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/* 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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}
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void pd_command_task(void)
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{
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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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