2 * Copyright (C) 2014-2015 Samsung Electronics
3 * Przemyslaw Marczak <p.marczak@samsung.com>
5 * SPDX-License-Identifier: GPL-2.0+
14 #include <dm/device-internal.h>
15 #include <dm/uclass-internal.h>
16 #include <power/pmic.h>
17 #include <linux/ctype.h>
19 DECLARE_GLOBAL_DATA_PTR;
21 #if CONFIG_IS_ENABLED(PMIC_CHILDREN)
22 int pmic_bind_children(struct udevice *pmic, ofnode parent,
23 const struct pmic_child_info *child_info)
25 const struct pmic_child_info *info;
27 struct udevice *child;
28 const char *node_name;
35 debug("%s for '%s' at node offset: %d\n", __func__, pmic->name,
38 ofnode_for_each_subnode(node, parent) {
39 node_name = ofnode_get_name(node);
41 debug("* Found child node: '%s'\n", node_name);
44 for (info = child_info; info->prefix && info->driver; info++) {
45 debug(" - compatible prefix: '%s'\n", info->prefix);
47 prefix_len = strlen(info->prefix);
48 if (strncmp(info->prefix, node_name, prefix_len)) {
49 reg_name = ofnode_read_string(node,
53 if (strncmp(info->prefix, reg_name, prefix_len))
57 drv = lists_driver_lookup_name(info->driver);
59 debug(" - driver: '%s' not found!\n",
64 debug(" - found child driver: '%s'\n", drv->name);
66 ret = device_bind_with_driver_data(pmic, drv, node_name,
69 debug(" - child binding error: %d\n", ret);
73 debug(" - bound child device: '%s'\n", child->name);
75 child->driver_data = trailing_strtol(node_name);
77 debug(" - set 'child->driver_data': %lu\n",
85 debug(" - compatible prefix not found\n");
88 debug("Bound: %d children for PMIC: '%s'\n", bind_count, pmic->name);
93 int pmic_get(const char *name, struct udevice **devp)
95 return uclass_get_device_by_name(UCLASS_PMIC, name, devp);
98 int pmic_reg_count(struct udevice *dev)
100 const struct dm_pmic_ops *ops = dev_get_driver_ops(dev);
102 if (!ops || !ops->reg_count)
105 return ops->reg_count(dev);
108 int pmic_read(struct udevice *dev, uint reg, uint8_t *buffer, int len)
110 const struct dm_pmic_ops *ops = dev_get_driver_ops(dev);
115 if (!ops || !ops->read)
118 return ops->read(dev, reg, buffer, len);
121 int pmic_write(struct udevice *dev, uint reg, const uint8_t *buffer, int len)
123 const struct dm_pmic_ops *ops = dev_get_driver_ops(dev);
128 if (!ops || !ops->write)
131 return ops->write(dev, reg, buffer, len);
134 int pmic_reg_read(struct udevice *dev, uint reg)
139 debug("%s: reg=%x", __func__, reg);
140 ret = pmic_read(dev, reg, &byte, 1);
141 debug(", value=%x, ret=%d\n", byte, ret);
143 return ret ? ret : byte;
146 int pmic_reg_write(struct udevice *dev, uint reg, uint value)
151 debug("%s: reg=%x, value=%x", __func__, reg, value);
152 ret = pmic_write(dev, reg, &byte, 1);
153 debug(", ret=%d\n", ret);
158 int pmic_clrsetbits(struct udevice *dev, uint reg, uint clr, uint set)
163 ret = pmic_reg_read(dev, reg);
166 byte = (ret & ~clr) | set;
168 return pmic_reg_write(dev, reg, byte);
171 UCLASS_DRIVER(pmic) = {