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9#include <common.h>
10#include <fdtdec.h>
11#include <errno.h>
12#include <dm.h>
13#include <i2c.h>
14#include <log.h>
15#include <power/pmic.h>
16#include <power/regulator.h>
17#include <power/lp87565.h>
18
19static const char lp87565_buck_ctrl1[LP87565_BUCK_NUM] = {0x2, 0x4, 0x6, 0x8, 0x2, 0x6};
20static const char lp87565_buck_vout[LP87565_BUCK_NUM] = {0xA, 0xC, 0xE, 0x10, 0xA, 0xE };
21
22static int lp87565_buck_enable(struct udevice *dev, int op, bool *enable)
23{
24 int ret;
25 unsigned int adr;
26 struct dm_regulator_uclass_plat *uc_pdata;
27
28 uc_pdata = dev_get_uclass_plat(dev);
29 adr = uc_pdata->ctrl_reg;
30
31 ret = pmic_reg_read(dev->parent, adr);
32 if (ret < 0)
33 return ret;
34
35 if (op == PMIC_OP_GET) {
36 ret &= LP87565_BUCK_MODE_MASK;
37
38 if (ret)
39 *enable = true;
40 else
41 *enable = false;
42
43 return 0;
44 } else if (op == PMIC_OP_SET) {
45 if (*enable)
46 ret |= LP87565_BUCK_MODE_MASK;
47 else
48 ret &= ~LP87565_BUCK_MODE_MASK;
49 ret = pmic_reg_write(dev->parent, adr, ret);
50 if (ret)
51 return ret;
52 }
53
54 return 0;
55}
56
57static int lp87565_buck_volt2val(int uV)
58{
59 if (uV > LP87565_BUCK_VOLT_MAX)
60 return -EINVAL;
61 else if (uV > 1400000)
62 return (uV - 1420000) / 20000 + 0x9E;
63 else if (uV > 730000)
64 return (uV - 735000) / 5000 + 0x18;
65 else if (uV >= 500000)
66 return (uV - 500000) / 10000;
67 else
68 return -EINVAL;
69}
70
71static int lp87565_buck_val2volt(int val)
72{
73 if (val > LP87565_BUCK_VOLT_MAX_HEX)
74 return -EINVAL;
75 else if (val > 0x9D)
76 return 1400000 + (val - 0x9D) * 20000;
77 else if (val > 0x17)
78 return 730000 + (val - 0x17) * 5000;
79 else if (val >= 0x0)
80 return 500000 + val * 10000;
81 else
82 return -EINVAL;
83}
84
85static int lp87565_buck_val(struct udevice *dev, int op, int *uV)
86{
87 unsigned int hex, adr;
88 int ret;
89 struct dm_regulator_uclass_plat *uc_pdata;
90
91 uc_pdata = dev_get_uclass_plat(dev);
92
93 if (op == PMIC_OP_GET)
94 *uV = 0;
95
96 adr = uc_pdata->volt_reg;
97
98 ret = pmic_reg_read(dev->parent, adr);
99 if (ret < 0)
100 return ret;
101
102 if (op == PMIC_OP_GET) {
103 ret &= LP87565_BUCK_VOLT_MASK;
104 ret = lp87565_buck_val2volt(ret);
105 if (ret < 0)
106 return ret;
107 *uV = ret;
108
109 return 0;
110 }
111
112 hex = lp87565_buck_volt2val(*uV);
113 if (hex < 0)
114 return hex;
115
116 ret &= 0x0;
117 ret = hex;
118
119 ret = pmic_reg_write(dev->parent, adr, ret);
120
121 return ret;
122}
123
124static int lp87565_buck_probe(struct udevice *dev)
125{
126 struct dm_regulator_uclass_plat *uc_pdata;
127 int idx;
128
129 uc_pdata = dev_get_uclass_plat(dev);
130 uc_pdata->type = REGULATOR_TYPE_BUCK;
131
132 idx = dev->driver_data;
133 if (idx == 0 || idx == 1 || idx == 2 || idx == 3) {
134 debug("Single phase regulator\n");
135 } else if (idx == 23) {
136 idx = 5;
137 } else if (idx == 10) {
138 idx = 4;
139 } else {
140 printf("Wrong ID for regulator\n");
141 return -EINVAL;
142 }
143
144 uc_pdata->ctrl_reg = lp87565_buck_ctrl1[idx];
145 uc_pdata->volt_reg = lp87565_buck_vout[idx];
146
147 return 0;
148}
149
150static int buck_get_value(struct udevice *dev)
151{
152 int uV;
153 int ret;
154
155 ret = lp87565_buck_val(dev, PMIC_OP_GET, &uV);
156 if (ret)
157 return ret;
158
159 return uV;
160}
161
162static int buck_set_value(struct udevice *dev, int uV)
163{
164 return lp87565_buck_val(dev, PMIC_OP_SET, &uV);
165}
166
167static int buck_get_enable(struct udevice *dev)
168{
169 bool enable = false;
170 int ret;
171
172
173 ret = lp87565_buck_enable(dev, PMIC_OP_GET, &enable);
174 if (ret)
175 return ret;
176
177 return enable;
178}
179
180static int buck_set_enable(struct udevice *dev, bool enable)
181{
182 return lp87565_buck_enable(dev, PMIC_OP_SET, &enable);
183}
184
185static const struct dm_regulator_ops lp87565_buck_ops = {
186 .get_value = buck_get_value,
187 .set_value = buck_set_value,
188 .get_enable = buck_get_enable,
189 .set_enable = buck_set_enable,
190};
191
192U_BOOT_DRIVER(lp87565_buck) = {
193 .name = LP87565_BUCK_DRIVER,
194 .id = UCLASS_REGULATOR,
195 .ops = &lp87565_buck_ops,
196 .probe = lp87565_buck_probe,
197};
198
