blob: 82d58f79aa135521cdb1c75ebcccd3ca2092b99e (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
/* Copyright (c) 2014 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.
*/
/* Host command module for PD MCU */
#include "charge_state.h"
#include "common.h"
#include "console.h"
#include "host_command.h"
#include "task.h"
#include "timer.h"
#include "util.h"
#define CPRINTS(format, args...) cprints(CC_PD_HOST_CMD, format, ## args)
#define TASK_EVENT_EXCHANGE_PD_STATUS TASK_EVENT_CUSTOM(1)
void host_command_pd_send_status(void)
{
task_set_event(TASK_ID_PDCMD, TASK_EVENT_EXCHANGE_PD_STATUS, 0);
}
static void pd_exchange_status(void)
{
struct ec_params_pd_status ec_status;
struct ec_response_pd_status pd_status;
int rv = 0, tries = 0;
/* Send battery state of charge */
if (charge_get_flags() & CHARGE_FLAG_BATT_RESPONSIVE)
ec_status.batt_soc = charge_get_percent();
else
ec_status.batt_soc = -1;
/* Try 3 times to get the PD MCU status. */
while (tries++ < 3) {
rv = pd_host_command(EC_CMD_PD_EXCHANGE_STATUS, 0, &ec_status,
sizeof(struct ec_params_pd_status), &pd_status,
sizeof(struct ec_response_pd_status));
if (rv >= 0)
break;
task_wait_event(500*MSEC);
}
if (rv < 0) {
CPRINTS("Host command to PD MCU failed");
return;
}
/* Set input current limit */
#ifdef BOARD_SAMUS
/*
* TODO(crosbug.com/p/28532): Remove this workaround for Samus p2b
* boards which cannot correctly limit input current.
*/
pd_status.curr_lim_ma = pd_status.curr_lim_ma * 2 / 3;
#endif
rv = charge_set_input_current_limit(MAX(pd_status.curr_lim_ma,
CONFIG_CHARGER_INPUT_CURRENT));
if (rv < 0)
CPRINTS("Failed to set input current limit from PD MCU");
}
void pd_command_task(void)
{
while (1) {
/* Wait for the next command event */
int evt = task_wait_event(-1);
/* Process event to send status to PD */
if (evt & TASK_EVENT_EXCHANGE_PD_STATUS)
pd_exchange_status();
}
}
|
