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
|
/* Copyright 2015 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.
*
* Battery pack vendor provided charging profile
*/
#include "battery.h"
#include "battery_smart.h"
#include "i2c.h"
#include "util.h"
/* Shutdown mode parameter to write to manufacturer access register */
#define PARAM_CUT_OFF_LOW 0x10
#define PARAM_CUT_OFF_HIGH 0x00
static const struct battery_info info = {
#if (BOARD_REV >= OAK_REV3)
.voltage_max = 13050,
.voltage_normal = 11400,
/*
* TODO(crosbug.com/p/44428):
* In order to compatible with 2S battery, set min voltage as 6V rather
* than 9V. Should set voltage_min to 9V, when 2S battery
* phased out.
*/
.voltage_min = 6000,
#else /* BOARD_REV < OAK_REV3 */
.voltage_max = 8700,
.voltage_normal = 7600,
.voltage_min = 6000,
#endif
/* Pre-charge values. */
.precharge_current = 256, /* mA */
.start_charging_min_c = 0,
.start_charging_max_c = 45,
.charging_min_c = 0,
.charging_max_c = 45,
.discharging_min_c = 0,
.discharging_max_c = 60,
};
const struct battery_info *battery_get_info(void)
{
return &info;
}
static int cutoff(void)
{
int rv;
uint8_t buf[3];
/* Ship mode command must be sent twice to take effect */
buf[0] = SB_MANUFACTURER_ACCESS & 0xff;
buf[1] = PARAM_CUT_OFF_LOW;
buf[2] = PARAM_CUT_OFF_HIGH;
i2c_lock(I2C_PORT_BATTERY, 1);
rv = i2c_xfer_unlocked(I2C_PORT_BATTERY, BATTERY_ADDR_FLAGS,
buf, 3, NULL, 0, I2C_XFER_SINGLE);
rv |= i2c_xfer_unlocked(I2C_PORT_BATTERY, BATTERY_ADDR_FLAGS,
buf, 3, NULL, 0, I2C_XFER_SINGLE);
i2c_lock(I2C_PORT_BATTERY, 0);
return rv;
}
int board_cut_off_battery(void)
{
return cutoff();
}
|
