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7#include <common.h>
8#include <dm.h>
9#include <errno.h>
10#include <log.h>
11#include <power/rk8xx_pmic.h>
12#include <power/pmic.h>
13
14static struct reg_data rk817_init_reg[] = {
15
16
17
18 { RK817_BUCK4_CMIN, 0x60, 0x60},
19};
20
21static const struct pmic_child_info pmic_children_info[] = {
22 { .prefix = "DCDC_REG", .driver = "rk8xx_buck"},
23 { .prefix = "LDO_REG", .driver = "rk8xx_ldo"},
24 { .prefix = "SWITCH_REG", .driver = "rk8xx_switch"},
25 { },
26};
27
28static int rk8xx_reg_count(struct udevice *dev)
29{
30 return RK808_NUM_OF_REGS;
31}
32
33static int rk8xx_write(struct udevice *dev, uint reg, const uint8_t *buff,
34 int len)
35{
36 int ret;
37
38 ret = dm_i2c_write(dev, reg, buff, len);
39 if (ret) {
40 debug("write error to device: %p register: %#x!\n", dev, reg);
41 return ret;
42 }
43
44 return 0;
45}
46
47static int rk8xx_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
48{
49 int ret;
50
51 ret = dm_i2c_read(dev, reg, buff, len);
52 if (ret) {
53 debug("read error from device: %p register: %#x!\n", dev, reg);
54 return ret;
55 }
56
57 return 0;
58}
59
60#if CONFIG_IS_ENABLED(PMIC_CHILDREN)
61static int rk8xx_bind(struct udevice *dev)
62{
63 ofnode regulators_node;
64 int children;
65
66 regulators_node = dev_read_subnode(dev, "regulators");
67 if (!ofnode_valid(regulators_node)) {
68 debug("%s: %s regulators subnode not found!\n", __func__,
69 dev->name);
70 return -ENXIO;
71 }
72
73 debug("%s: '%s' - found regulators subnode\n", __func__, dev->name);
74
75 children = pmic_bind_children(dev, regulators_node, pmic_children_info);
76 if (!children)
77 debug("%s: %s - no child found\n", __func__, dev->name);
78
79
80 return 0;
81}
82#endif
83
84static int rk8xx_probe(struct udevice *dev)
85{
86 struct rk8xx_priv *priv = dev_get_priv(dev);
87 struct reg_data *init_data = NULL;
88 int init_data_num = 0;
89 int ret = 0, i, show_variant;
90 u8 msb, lsb, id_msb, id_lsb;
91 u8 on_source = 0, off_source = 0;
92 u8 power_en0, power_en1, power_en2, power_en3;
93 u8 value;
94
95
96 if (device_is_compatible(dev, "rockchip,rk817") ||
97 device_is_compatible(dev, "rockchip,rk809")) {
98 id_msb = RK817_ID_MSB;
99 id_lsb = RK817_ID_LSB;
100 } else {
101 id_msb = ID_MSB;
102 id_lsb = ID_LSB;
103 }
104
105 ret = rk8xx_read(dev, id_msb, &msb, 1);
106 if (ret)
107 return ret;
108 ret = rk8xx_read(dev, id_lsb, &lsb, 1);
109 if (ret)
110 return ret;
111
112 priv->variant = ((msb << 8) | lsb) & RK8XX_ID_MSK;
113 show_variant = priv->variant;
114 switch (priv->variant) {
115 case RK808_ID:
116 show_variant = 0x808;
117 break;
118 case RK805_ID:
119 case RK816_ID:
120 case RK818_ID:
121 on_source = RK8XX_ON_SOURCE;
122 off_source = RK8XX_OFF_SOURCE;
123 break;
124 case RK809_ID:
125 case RK817_ID:
126 on_source = RK817_ON_SOURCE;
127 off_source = RK817_OFF_SOURCE;
128 init_data = rk817_init_reg;
129 init_data_num = ARRAY_SIZE(rk817_init_reg);
130 power_en0 = pmic_reg_read(dev, RK817_POWER_EN0);
131 power_en1 = pmic_reg_read(dev, RK817_POWER_EN1);
132 power_en2 = pmic_reg_read(dev, RK817_POWER_EN2);
133 power_en3 = pmic_reg_read(dev, RK817_POWER_EN3);
134
135 value = (power_en0 & 0x0f) | ((power_en1 & 0x0f) << 4);
136 pmic_reg_write(dev, RK817_POWER_EN_SAVE0, value);
137 value = (power_en2 & 0x0f) | ((power_en3 & 0x0f) << 4);
138 pmic_reg_write(dev, RK817_POWER_EN_SAVE1, value);
139 break;
140 default:
141 printf("Unknown PMIC: RK%x!!\n", priv->variant);
142 return -EINVAL;
143 }
144
145 for (i = 0; i < init_data_num; i++) {
146 ret = pmic_clrsetbits(dev,
147 init_data[i].reg,
148 init_data[i].mask,
149 init_data[i].val);
150 if (ret < 0) {
151 printf("%s: i2c set reg 0x%x failed, ret=%d\n",
152 __func__, init_data[i].reg, ret);
153 }
154
155 debug("%s: reg[0x%x] = 0x%x\n", __func__, init_data[i].reg,
156 pmic_reg_read(dev, init_data[i].reg));
157 }
158
159 printf("PMIC: RK%x ", show_variant);
160
161 if (on_source && off_source)
162 printf("(on=0x%02x, off=0x%02x)",
163 pmic_reg_read(dev, on_source),
164 pmic_reg_read(dev, off_source));
165 printf("\n");
166
167 return 0;
168}
169
170static struct dm_pmic_ops rk8xx_ops = {
171 .reg_count = rk8xx_reg_count,
172 .read = rk8xx_read,
173 .write = rk8xx_write,
174};
175
176static const struct udevice_id rk8xx_ids[] = {
177 { .compatible = "rockchip,rk805" },
178 { .compatible = "rockchip,rk808" },
179 { .compatible = "rockchip,rk809" },
180 { .compatible = "rockchip,rk816" },
181 { .compatible = "rockchip,rk817" },
182 { .compatible = "rockchip,rk818" },
183 { }
184};
185
186U_BOOT_DRIVER(rockchip_rk805) = {
187 .name = "rockchip_rk805",
188 .id = UCLASS_PMIC,
189 .of_match = rk8xx_ids,
190#if CONFIG_IS_ENABLED(PMIC_CHILDREN)
191 .bind = rk8xx_bind,
192#endif
193 .priv_auto = sizeof(struct rk8xx_priv),
194 .probe = rk8xx_probe,
195 .ops = &rk8xx_ops,
196};
197
198DM_DRIVER_ALIAS(rockchip_rk805, rockchip_rk808)
199
