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
|
// SPDX-License-Identifier: GPL-2.0+
#include <dm.h>
#include <power/pmic.h>
#include <power/regulator.h>
#define AXP_VBUS_IPSOUT 0x30
#define AXP_VBUS_IPSOUT_DRIVEBUS BIT(2)
#define AXP_MISC_CTRL 0x8f
#define AXP_MISC_CTRL_N_VBUSEN_FUNC BIT(4)
static int axp_drivevbus_get_enable(struct udevice *dev)
{
int ret;
ret = pmic_reg_read(dev->parent, AXP_VBUS_IPSOUT);
if (ret < 0)
return ret;
return !!(ret & AXP_VBUS_IPSOUT_DRIVEBUS);
}
static int axp_drivevbus_set_enable(struct udevice *dev, bool enable)
{
return pmic_clrsetbits(dev->parent, AXP_VBUS_IPSOUT,
AXP_VBUS_IPSOUT_DRIVEBUS,
enable ? AXP_VBUS_IPSOUT_DRIVEBUS : 0);
}
static const struct dm_regulator_ops axp_drivevbus_ops = {
.get_enable = axp_drivevbus_get_enable,
.set_enable = axp_drivevbus_set_enable,
};
static int axp_drivevbus_probe(struct udevice *dev)
{
struct dm_regulator_uclass_plat *uc_plat = dev_get_uclass_plat(dev);
int ret;
uc_plat->type = REGULATOR_TYPE_FIXED;
if (dev_read_bool(dev->parent, "x-powers,drive-vbus-en")) {
ret = pmic_clrsetbits(dev->parent, AXP_MISC_CTRL,
AXP_MISC_CTRL_N_VBUSEN_FUNC, 0);
if (ret)
return ret;
}
return 0;
}
U_BOOT_DRIVER(axp_drivevbus) = {
.name = "axp_drivevbus",
.id = UCLASS_REGULATOR,
.probe = axp_drivevbus_probe,
.ops = &axp_drivevbus_ops,
};
|
