1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2017 Google, Inc
4 * Written by Simon Glass <sjg@chromium.org>
6 * Placeholder regulator driver for as3722.
12 #include <power/as3722.h>
13 #include <power/pmic.h>
14 #include <power/regulator.h>
16 static int stepdown_get_value(struct udevice *dev)
21 static int stepdown_set_value(struct udevice *dev, int uvolt)
26 static int stepdown_set_enable(struct udevice *dev, bool enable)
28 struct udevice *pmic = dev_get_parent(dev);
29 int sd = dev->driver_data;
32 ret = pmic_clrsetbits(pmic, AS3722_SD_CONTROL, 0, 1 << sd);
34 debug("%s: failed to write SD control register: %d", __func__,
42 static int stepdown_get_enable(struct udevice *dev)
44 struct udevice *pmic = dev_get_parent(dev);
45 int sd = dev->driver_data;
48 ret = pmic_reg_read(pmic, AS3722_SD_CONTROL);
50 debug("%s: failed to read SD control register: %d", __func__,
55 return ret & (1 << sd) ? true : false;
58 static int ldo_get_value(struct udevice *dev)
63 static int ldo_set_value(struct udevice *dev, int uvolt)
68 static int ldo_set_enable(struct udevice *dev, bool enable)
70 struct udevice *pmic = dev_get_parent(dev);
71 int ldo = dev->driver_data;
74 ret = pmic_clrsetbits(pmic, AS3722_LDO_CONTROL, 0, 1 << ldo);
76 debug("%s: failed to write LDO control register: %d", __func__,
84 static int ldo_get_enable(struct udevice *dev)
86 struct udevice *pmic = dev_get_parent(dev);
87 int ldo = dev->driver_data;
90 ret = pmic_reg_read(pmic, AS3722_LDO_CONTROL);
92 debug("%s: failed to read SD control register: %d", __func__,
97 return ret & (1 << ldo) ? true : false;
100 static int as3722_stepdown_probe(struct udevice *dev)
102 struct dm_regulator_uclass_platdata *uc_pdata;
104 uc_pdata = dev_get_uclass_platdata(dev);
106 uc_pdata->type = REGULATOR_TYPE_BUCK;
111 static int as3722_ldo_probe(struct udevice *dev)
113 struct dm_regulator_uclass_platdata *uc_pdata;
115 uc_pdata = dev_get_uclass_platdata(dev);
117 uc_pdata->type = REGULATOR_TYPE_LDO;
122 static const struct dm_regulator_ops as3722_stepdown_ops = {
123 .get_value = stepdown_get_value,
124 .set_value = stepdown_set_value,
125 .get_enable = stepdown_get_enable,
126 .set_enable = stepdown_set_enable,
129 static const struct dm_regulator_ops as3722_ldo_ops = {
130 .get_value = ldo_get_value,
131 .set_value = ldo_set_value,
132 .get_enable = ldo_get_enable,
133 .set_enable = ldo_set_enable,
136 U_BOOT_DRIVER(as3722_stepdown) = {
137 .name = "as3722_stepdown",
138 .id = UCLASS_REGULATOR,
139 .ops = &as3722_stepdown_ops,
140 .probe = as3722_stepdown_probe,
143 U_BOOT_DRIVER(as3722_ldo) = {
144 .name = "as3722_ldo",
145 .id = UCLASS_REGULATOR,
146 .ops = &as3722_ldo_ops,
147 .probe = as3722_ldo_probe,