1 /*
2 * Copyright (c) 2023 Nordic Semiconductor ASA
3 * SPDX-License-Identifier: Apache-2.0
4 */
5
6 #define DT_DRV_COMPAT nordic_npm1100
7
8 #include <errno.h>
9
10 #include <zephyr/drivers/gpio.h>
11 #include <zephyr/drivers/regulator.h>
12 #include <zephyr/dt-bindings/regulator/npm1100.h>
13 #include <zephyr/toolchain.h>
14
15 struct regulator_npm1100_pconfig {
16 struct gpio_dt_spec iset;
17 };
18
19 struct regulator_npm1100_config {
20 struct regulator_common_config common;
21 struct gpio_dt_spec mode;
22 };
23
24 struct regulator_npm1100_data {
25 struct regulator_common_data data;
26 };
27
regulator_npm1100_set_mode(const struct device * dev,regulator_mode_t mode)28 static int regulator_npm1100_set_mode(const struct device *dev,
29 regulator_mode_t mode)
30 {
31 const struct regulator_npm1100_config *config = dev->config;
32
33 if ((config->mode.port == NULL) || (mode > NPM1100_MODE_PWM)) {
34 return -ENOTSUP;
35 }
36
37 return gpio_pin_set_dt(&config->mode,
38 mode == NPM1100_MODE_AUTO ? 0 : 1);
39 }
40
regulator_npm1100_get_mode(const struct device * dev,regulator_mode_t * mode)41 static int regulator_npm1100_get_mode(const struct device *dev,
42 regulator_mode_t *mode)
43 {
44 const struct regulator_npm1100_config *config = dev->config;
45 int ret;
46
47 if (config->mode.port == NULL) {
48 return -ENOTSUP;
49 }
50
51 ret = gpio_pin_get_dt(&config->mode);
52 if (ret < 0) {
53 return ret;
54 }
55
56 *mode = (ret == 0) ? NPM1100_MODE_AUTO : NPM1100_MODE_PWM;
57
58 return 0;
59 }
60
regulator_npm1100_init(const struct device * dev)61 static __unused int regulator_npm1100_init(const struct device *dev)
62 {
63 const struct regulator_npm1100_config *config = dev->config;
64 int ret;
65
66 if (config->mode.port != NULL) {
67 if (!gpio_is_ready_dt(&config->mode)) {
68 return -ENODEV;
69 }
70
71 ret = gpio_pin_configure_dt(&config->mode,
72 GPIO_INPUT | GPIO_OUTPUT_INACTIVE);
73 if (ret < 0) {
74 return ret;
75 }
76 }
77
78 regulator_common_data_init(dev);
79
80 return regulator_common_init(dev, true);
81 }
82
regulator_npm1100_common_init(const struct device * dev)83 static int regulator_npm1100_common_init(const struct device *dev)
84 {
85 const struct regulator_npm1100_pconfig *config = dev->config;
86
87 if (config->iset.port != NULL) {
88 int ret;
89
90 if (!gpio_is_ready_dt(&config->iset)) {
91 return -ENODEV;
92 }
93
94 ret = gpio_pin_configure_dt(&config->iset,
95 GPIO_OUTPUT_INACTIVE);
96 if (ret < 0) {
97 return ret;
98 }
99 }
100
101 return 0;
102 }
103
104 static const __unused struct regulator_driver_api api = {
105 .set_mode = regulator_npm1100_set_mode,
106 .get_mode = regulator_npm1100_get_mode,
107 };
108
109 #define REGULATOR_NPM1100_DEFINE_BUCK(node_id, id) \
110 static struct regulator_npm1100_data data_##id; \
111 \
112 static const struct regulator_npm1100_config config_##id = { \
113 .common = REGULATOR_DT_COMMON_CONFIG_INIT(node_id), \
114 .mode = GPIO_DT_SPEC_GET_OR(node_id, nordic_mode_gpios, {}), \
115 }; \
116 \
117 DEVICE_DT_DEFINE(node_id, regulator_npm1100_init, NULL, &data_##id, \
118 &config_##id, POST_KERNEL, \
119 CONFIG_REGULATOR_NPM1100_INIT_PRIORITY, &api);
120
121 #define REGULATOR_NPM1100_DEFINE_BUCK_COND(inst) \
122 COND_CODE_1(DT_NODE_EXISTS(DT_INST_CHILD(inst, buck)), \
123 (REGULATOR_NPM1100_DEFINE_BUCK(DT_INST_CHILD(inst, buck), \
124 buck##inst)), \
125 ())
126
127 #define REGULATOR_NPM1100_DEFINE_ALL(inst) \
128 static const struct regulator_npm1100_pconfig config_##inst = { \
129 .iset = GPIO_DT_SPEC_INST_GET_OR(inst, nordic_iset_gpios, {}), \
130 }; \
131 \
132 DEVICE_DT_INST_DEFINE(inst, regulator_npm1100_common_init, NULL, NULL, \
133 &config_##inst, POST_KERNEL, \
134 CONFIG_REGULATOR_NPM1100_INIT_PRIORITY, NULL); \
135 \
136 REGULATOR_NPM1100_DEFINE_BUCK_COND(inst)
137
138 DT_INST_FOREACH_STATUS_OKAY(REGULATOR_NPM1100_DEFINE_ALL)
139
