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
79
80
81
82
83
|
// SPDX-License-Identifier: GPL-2.0+
/*
* AXP305 driver
*
* (C) Copyright 2020 Jernej Skrabec <jernej.skrabec@siol.net>
*
* Based on axp221.c
* (C) Copyright 2014 Hans de Goede <hdegoede@redhat.com>
* (C) Copyright 2013 Oliver Schinagl <oliver@schinagl.nl>
*/
#include <common.h>
#include <command.h>
#include <errno.h>
#include <asm/arch/pmic_bus.h>
#include <axp_pmic.h>
#define AXP305_DCDC4_1600MV_OFFSET 46
static u8 axp305_mvolt_to_cfg(int mvolt, int min, int max, int div)
{
if (mvolt < min)
mvolt = min;
else if (mvolt > max)
mvolt = max;
return (mvolt - min) / div;
}
int axp_set_dcdc4(unsigned int mvolt)
{
int ret;
u8 cfg;
if (mvolt >= 1600)
cfg = AXP305_DCDC4_1600MV_OFFSET +
axp305_mvolt_to_cfg(mvolt, 1600, 3300, 100);
else
cfg = axp305_mvolt_to_cfg(mvolt, 600, 1500, 20);
if (mvolt == 0)
return pmic_bus_clrbits(AXP305_OUTPUT_CTRL1,
AXP305_OUTPUT_CTRL1_DCDCD_EN);
ret = pmic_bus_write(AXP305_DCDCD_VOLTAGE, cfg);
if (ret)
return ret;
return pmic_bus_setbits(AXP305_OUTPUT_CTRL1,
AXP305_OUTPUT_CTRL1_DCDCD_EN);
}
int axp_init(void)
{
u8 axp_chip_id;
int ret;
ret = pmic_bus_init();
if (ret)
return ret;
ret = pmic_bus_read(AXP305_CHIP_VERSION, &axp_chip_id);
if (ret)
return ret;
if ((axp_chip_id & AXP305_CHIP_VERSION_MASK) != 0x40)
return -ENODEV;
return ret;
}
#if !CONFIG_IS_ENABLED(ARM_PSCI_FW) && !IS_ENABLED(CONFIG_SYSRESET_CMD_POWEROFF)
int do_poweroff(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
{
pmic_bus_write(AXP305_SHUTDOWN, AXP305_POWEROFF);
/* infinite loop during shutdown */
while (1) {}
/* not reached */
return 0;
}
#endif
|
