1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * AXP818 driver based on AXP221 driver
4 *
5 *
6 * (C) Copyright 2015 Vishnu Patekar <vishnuptekar0510@gmail.com>
7 *
8 * Based on axp221.c
9 * (C) Copyright 2014 Hans de Goede <hdegoede@redhat.com>
10 * (C) Copyright 2013 Oliver Schinagl <oliver@schinagl.nl>
11 */
12
13 #include <common.h>
14 #include <errno.h>
15 #include <asm/arch/gpio.h>
16 #include <asm/arch/pmic_bus.h>
17 #include <axp_pmic.h>
18
axp818_mvolt_to_cfg(int mvolt,int min,int max,int div)19 static u8 axp818_mvolt_to_cfg(int mvolt, int min, int max, int div)
20 {
21 if (mvolt < min)
22 mvolt = min;
23 else if (mvolt > max)
24 mvolt = max;
25
26 return (mvolt - min) / div;
27 }
28
axp_set_dcdc1(unsigned int mvolt)29 int axp_set_dcdc1(unsigned int mvolt)
30 {
31 int ret;
32 u8 cfg = axp818_mvolt_to_cfg(mvolt, 1600, 3400, 100);
33
34 if (mvolt == 0)
35 return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1,
36 AXP818_OUTPUT_CTRL1_DCDC1_EN);
37
38 ret = pmic_bus_write(AXP818_DCDC1_CTRL, cfg);
39 if (ret)
40 return ret;
41
42 return pmic_bus_setbits(AXP818_OUTPUT_CTRL1,
43 AXP818_OUTPUT_CTRL1_DCDC1_EN);
44 }
45
axp_set_dcdc2(unsigned int mvolt)46 int axp_set_dcdc2(unsigned int mvolt)
47 {
48 int ret;
49 u8 cfg;
50
51 if (mvolt >= 1220)
52 cfg = 70 + axp818_mvolt_to_cfg(mvolt, 1220, 1300, 20);
53 else
54 cfg = axp818_mvolt_to_cfg(mvolt, 500, 1200, 10);
55
56 if (mvolt == 0)
57 return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1,
58 AXP818_OUTPUT_CTRL1_DCDC2_EN);
59
60 ret = pmic_bus_write(AXP818_DCDC2_CTRL, cfg);
61 if (ret)
62 return ret;
63
64 return pmic_bus_setbits(AXP818_OUTPUT_CTRL1,
65 AXP818_OUTPUT_CTRL1_DCDC2_EN);
66 }
67
axp_set_dcdc3(unsigned int mvolt)68 int axp_set_dcdc3(unsigned int mvolt)
69 {
70 int ret;
71 u8 cfg;
72
73 if (mvolt >= 1220)
74 cfg = 70 + axp818_mvolt_to_cfg(mvolt, 1220, 1300, 20);
75 else
76 cfg = axp818_mvolt_to_cfg(mvolt, 500, 1200, 10);
77
78 if (mvolt == 0)
79 return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1,
80 AXP818_OUTPUT_CTRL1_DCDC3_EN);
81
82 ret = pmic_bus_write(AXP818_DCDC3_CTRL, cfg);
83 if (ret)
84 return ret;
85
86 return pmic_bus_setbits(AXP818_OUTPUT_CTRL1,
87 AXP818_OUTPUT_CTRL1_DCDC3_EN);
88 }
89
axp_set_dcdc5(unsigned int mvolt)90 int axp_set_dcdc5(unsigned int mvolt)
91 {
92 int ret;
93 u8 cfg;
94
95 if (mvolt >= 1140)
96 cfg = 32 + axp818_mvolt_to_cfg(mvolt, 1140, 1840, 20);
97 else
98 cfg = axp818_mvolt_to_cfg(mvolt, 800, 1120, 10);
99
100 if (mvolt == 0)
101 return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1,
102 AXP818_OUTPUT_CTRL1_DCDC5_EN);
103
104 ret = pmic_bus_write(AXP818_DCDC5_CTRL, cfg);
105 if (ret)
106 return ret;
107
108 return pmic_bus_setbits(AXP818_OUTPUT_CTRL1,
109 AXP818_OUTPUT_CTRL1_DCDC5_EN);
110 }
111
axp_set_aldo(int aldo_num,unsigned int mvolt)112 int axp_set_aldo(int aldo_num, unsigned int mvolt)
113 {
114 int ret;
115 u8 cfg;
116
117 if (aldo_num < 1 || aldo_num > 3)
118 return -EINVAL;
119
120 if (mvolt == 0)
121 return pmic_bus_clrbits(AXP818_OUTPUT_CTRL3,
122 AXP818_OUTPUT_CTRL3_ALDO1_EN << (aldo_num - 1));
123
124 cfg = axp818_mvolt_to_cfg(mvolt, 700, 3300, 100);
125 ret = pmic_bus_write(AXP818_ALDO1_CTRL + (aldo_num - 1), cfg);
126 if (ret)
127 return ret;
128
129 return pmic_bus_setbits(AXP818_OUTPUT_CTRL3,
130 AXP818_OUTPUT_CTRL3_ALDO1_EN << (aldo_num - 1));
131 }
132
133 /* TODO: re-work other AXP drivers to consolidate ALDO functions. */
axp_set_aldo1(unsigned int mvolt)134 int axp_set_aldo1(unsigned int mvolt)
135 {
136 return axp_set_aldo(1, mvolt);
137 }
138
axp_set_aldo2(unsigned int mvolt)139 int axp_set_aldo2(unsigned int mvolt)
140 {
141 return axp_set_aldo(2, mvolt);
142 }
143
axp_set_aldo3(unsigned int mvolt)144 int axp_set_aldo3(unsigned int mvolt)
145 {
146 return axp_set_aldo(3, mvolt);
147 }
148
axp_set_dldo(int dldo_num,unsigned int mvolt)149 int axp_set_dldo(int dldo_num, unsigned int mvolt)
150 {
151 int ret;
152 u8 cfg;
153
154 if (dldo_num < 1 || dldo_num > 4)
155 return -EINVAL;
156
157 if (mvolt == 0)
158 return pmic_bus_clrbits(AXP818_OUTPUT_CTRL2,
159 AXP818_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1));
160
161 cfg = axp818_mvolt_to_cfg(mvolt, 700, 3300, 100);
162 if (dldo_num == 2 && mvolt > 3300)
163 cfg += 1 + axp818_mvolt_to_cfg(mvolt, 3400, 4200, 200);
164 ret = pmic_bus_write(AXP818_DLDO1_CTRL + (dldo_num - 1), cfg);
165 if (ret)
166 return ret;
167
168 return pmic_bus_setbits(AXP818_OUTPUT_CTRL2,
169 AXP818_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1));
170 }
171
axp_set_eldo(int eldo_num,unsigned int mvolt)172 int axp_set_eldo(int eldo_num, unsigned int mvolt)
173 {
174 int ret;
175 u8 cfg;
176
177 if (eldo_num < 1 || eldo_num > 3)
178 return -EINVAL;
179
180 if (mvolt == 0)
181 return pmic_bus_clrbits(AXP818_OUTPUT_CTRL2,
182 AXP818_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1));
183
184 cfg = axp818_mvolt_to_cfg(mvolt, 700, 1900, 50);
185 ret = pmic_bus_write(AXP818_ELDO1_CTRL + (eldo_num - 1), cfg);
186 if (ret)
187 return ret;
188
189 return pmic_bus_setbits(AXP818_OUTPUT_CTRL2,
190 AXP818_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1));
191 }
192
axp_set_fldo(int fldo_num,unsigned int mvolt)193 int axp_set_fldo(int fldo_num, unsigned int mvolt)
194 {
195 int ret;
196 u8 cfg;
197
198 if (fldo_num < 1 || fldo_num > 3)
199 return -EINVAL;
200
201 if (mvolt == 0)
202 return pmic_bus_clrbits(AXP818_OUTPUT_CTRL3,
203 AXP818_OUTPUT_CTRL3_FLDO1_EN << (fldo_num - 1));
204
205 if (fldo_num < 3) {
206 cfg = axp818_mvolt_to_cfg(mvolt, 700, 1450, 50);
207 ret = pmic_bus_write(AXP818_FLDO1_CTRL + (fldo_num - 1), cfg);
208 } else {
209 /*
210 * Special case for FLDO3, which is DCDC5 / 2 or FLDOIN / 2
211 * Since FLDOIN is unknown, test against DCDC5.
212 */
213 if (mvolt * 2 == CONFIG_AXP_DCDC5_VOLT)
214 ret = pmic_bus_clrbits(AXP818_FLDO2_3_CTRL,
215 AXP818_FLDO2_3_CTRL_FLDO3_VOL);
216 else
217 ret = pmic_bus_setbits(AXP818_FLDO2_3_CTRL,
218 AXP818_FLDO2_3_CTRL_FLDO3_VOL);
219 }
220 if (ret)
221 return ret;
222
223 return pmic_bus_setbits(AXP818_OUTPUT_CTRL3,
224 AXP818_OUTPUT_CTRL3_FLDO1_EN << (fldo_num - 1));
225 }
226
axp_set_sw(bool on)227 int axp_set_sw(bool on)
228 {
229 if (on)
230 return pmic_bus_setbits(AXP818_OUTPUT_CTRL2,
231 AXP818_OUTPUT_CTRL2_SW_EN);
232
233 return pmic_bus_clrbits(AXP818_OUTPUT_CTRL2,
234 AXP818_OUTPUT_CTRL2_SW_EN);
235 }
236
axp_init(void)237 int axp_init(void)
238 {
239 u8 axp_chip_id;
240 int ret;
241
242 ret = pmic_bus_init();
243 if (ret)
244 return ret;
245
246 ret = pmic_bus_read(AXP818_CHIP_ID, &axp_chip_id);
247 if (ret)
248 return ret;
249
250 if (!(axp_chip_id == 0x51))
251 return -ENODEV;
252 else
253 return ret;
254
255 return 0;
256 }
257
do_poweroff(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])258 int do_poweroff(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
259 {
260 pmic_bus_write(AXP818_SHUTDOWN, AXP818_SHUTDOWN_POWEROFF);
261
262 /* infinite loop during shutdown */
263 while (1) {}
264
265 /* not reached */
266 return 0;
267 }
268