1 /*
2 * AXP221 and AXP223 driver
3 *
4 * IMPORTANT when making changes to this file check that the registers
5 * used are the same for the axp221 and axp223.
6 *
7 * (C) Copyright 2014 Hans de Goede <hdegoede@redhat.com>
8 * (C) Copyright 2013 Oliver Schinagl <oliver@schinagl.nl>
9 *
10 * SPDX-License-Identifier: GPL-2.0+
11 */
12
13 #include <common.h>
14 #include <command.h>
15 #include <errno.h>
16 #include <asm/arch/pmic_bus.h>
17 #include <axp_pmic.h>
18
axp221_mvolt_to_cfg(int mvolt,int min,int max,int div)19 static u8 axp221_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 = axp221_mvolt_to_cfg(mvolt, 1600, 3400, 100);
33
34 if (mvolt == 0)
35 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1,
36 AXP221_OUTPUT_CTRL1_DCDC1_EN);
37
38 ret = pmic_bus_write(AXP221_DCDC1_CTRL, cfg);
39 if (ret)
40 return ret;
41
42 ret = pmic_bus_setbits(AXP221_OUTPUT_CTRL2,
43 AXP221_OUTPUT_CTRL2_DCDC1SW_EN);
44 if (ret)
45 return ret;
46
47 return pmic_bus_setbits(AXP221_OUTPUT_CTRL1,
48 AXP221_OUTPUT_CTRL1_DCDC1_EN);
49 }
50
axp_set_dcdc2(unsigned int mvolt)51 int axp_set_dcdc2(unsigned int mvolt)
52 {
53 int ret;
54 u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1540, 20);
55
56 if (mvolt == 0)
57 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1,
58 AXP221_OUTPUT_CTRL1_DCDC2_EN);
59
60 ret = pmic_bus_write(AXP221_DCDC2_CTRL, cfg);
61 if (ret)
62 return ret;
63
64 return pmic_bus_setbits(AXP221_OUTPUT_CTRL1,
65 AXP221_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 = axp221_mvolt_to_cfg(mvolt, 600, 1860, 20);
72
73 if (mvolt == 0)
74 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1,
75 AXP221_OUTPUT_CTRL1_DCDC3_EN);
76
77 ret = pmic_bus_write(AXP221_DCDC3_CTRL, cfg);
78 if (ret)
79 return ret;
80
81 return pmic_bus_setbits(AXP221_OUTPUT_CTRL1,
82 AXP221_OUTPUT_CTRL1_DCDC3_EN);
83 }
84
axp_set_dcdc4(unsigned int mvolt)85 int axp_set_dcdc4(unsigned int mvolt)
86 {
87 int ret;
88 u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1540, 20);
89
90 if (mvolt == 0)
91 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1,
92 AXP221_OUTPUT_CTRL1_DCDC4_EN);
93
94 ret = pmic_bus_write(AXP221_DCDC4_CTRL, cfg);
95 if (ret)
96 return ret;
97
98 return pmic_bus_setbits(AXP221_OUTPUT_CTRL1,
99 AXP221_OUTPUT_CTRL1_DCDC4_EN);
100 }
101
axp_set_dcdc5(unsigned int mvolt)102 int axp_set_dcdc5(unsigned int mvolt)
103 {
104 int ret;
105 u8 cfg = axp221_mvolt_to_cfg(mvolt, 1000, 2550, 50);
106
107 if (mvolt == 0)
108 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1,
109 AXP221_OUTPUT_CTRL1_DCDC5_EN);
110
111 ret = pmic_bus_write(AXP221_DCDC5_CTRL, cfg);
112 if (ret)
113 return ret;
114
115 return pmic_bus_setbits(AXP221_OUTPUT_CTRL1,
116 AXP221_OUTPUT_CTRL1_DCDC5_EN);
117 }
118
axp_set_aldo1(unsigned int mvolt)119 int axp_set_aldo1(unsigned int mvolt)
120 {
121 int ret;
122 u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
123
124 if (mvolt == 0)
125 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1,
126 AXP221_OUTPUT_CTRL1_ALDO1_EN);
127
128 ret = pmic_bus_write(AXP221_ALDO1_CTRL, cfg);
129 if (ret)
130 return ret;
131
132 return pmic_bus_setbits(AXP221_OUTPUT_CTRL1,
133 AXP221_OUTPUT_CTRL1_ALDO1_EN);
134 }
135
axp_set_aldo2(unsigned int mvolt)136 int axp_set_aldo2(unsigned int mvolt)
137 {
138 int ret;
139 u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
140
141 if (mvolt == 0)
142 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1,
143 AXP221_OUTPUT_CTRL1_ALDO2_EN);
144
145 ret = pmic_bus_write(AXP221_ALDO2_CTRL, cfg);
146 if (ret)
147 return ret;
148
149 return pmic_bus_setbits(AXP221_OUTPUT_CTRL1,
150 AXP221_OUTPUT_CTRL1_ALDO2_EN);
151 }
152
axp_set_aldo3(unsigned int mvolt)153 int axp_set_aldo3(unsigned int mvolt)
154 {
155 int ret;
156 u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
157
158 if (mvolt == 0)
159 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL3,
160 AXP221_OUTPUT_CTRL3_ALDO3_EN);
161
162 ret = pmic_bus_write(AXP221_ALDO3_CTRL, cfg);
163 if (ret)
164 return ret;
165
166 return pmic_bus_setbits(AXP221_OUTPUT_CTRL3,
167 AXP221_OUTPUT_CTRL3_ALDO3_EN);
168 }
169
axp_set_dldo(int dldo_num,unsigned int mvolt)170 int axp_set_dldo(int dldo_num, unsigned int mvolt)
171 {
172 u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
173 int ret;
174
175 if (dldo_num < 1 || dldo_num > 4)
176 return -EINVAL;
177
178 if (mvolt == 0)
179 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL2,
180 AXP221_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1));
181
182 ret = pmic_bus_write(AXP221_DLDO1_CTRL + (dldo_num - 1), cfg);
183 if (ret)
184 return ret;
185
186 return pmic_bus_setbits(AXP221_OUTPUT_CTRL2,
187 AXP221_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1));
188 }
189
axp_set_eldo(int eldo_num,unsigned int mvolt)190 int axp_set_eldo(int eldo_num, unsigned int mvolt)
191 {
192 int ret;
193 u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
194
195 if (eldo_num < 1 || eldo_num > 3)
196 return -EINVAL;
197
198 if (mvolt == 0)
199 return pmic_bus_clrbits(AXP221_OUTPUT_CTRL2,
200 AXP221_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1));
201
202 ret = pmic_bus_write(AXP221_ELDO1_CTRL + (eldo_num - 1), cfg);
203 if (ret)
204 return ret;
205
206 return pmic_bus_setbits(AXP221_OUTPUT_CTRL2,
207 AXP221_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1));
208 }
209
axp_init(void)210 int axp_init(void)
211 {
212 u8 axp_chip_id;
213 int ret;
214
215 ret = pmic_bus_init();
216 if (ret)
217 return ret;
218
219 ret = pmic_bus_read(AXP221_CHIP_ID, &axp_chip_id);
220 if (ret)
221 return ret;
222
223 if (!(axp_chip_id == 0x6 || axp_chip_id == 0x7 || axp_chip_id == 0x17))
224 return -ENODEV;
225
226 /*
227 * Turn off LDOIO regulators / tri-state GPIO pins, when rebooting
228 * from android these are sometimes on.
229 */
230 ret = pmic_bus_write(AXP_GPIO0_CTRL, AXP_GPIO_CTRL_INPUT);
231 if (ret)
232 return ret;
233
234 ret = pmic_bus_write(AXP_GPIO1_CTRL, AXP_GPIO_CTRL_INPUT);
235 if (ret)
236 return ret;
237
238 return 0;
239 }
240
axp_get_sid(unsigned int * sid)241 int axp_get_sid(unsigned int *sid)
242 {
243 u8 *dest = (u8 *)sid;
244 int i, ret;
245
246 ret = pmic_bus_init();
247 if (ret)
248 return ret;
249
250 ret = pmic_bus_write(AXP221_PAGE, 1);
251 if (ret)
252 return ret;
253
254 for (i = 0; i < 16; i++) {
255 ret = pmic_bus_read(AXP221_SID + i, &dest[i]);
256 if (ret)
257 return ret;
258 }
259
260 pmic_bus_write(AXP221_PAGE, 0);
261
262 for (i = 0; i < 4; i++)
263 sid[i] = be32_to_cpu(sid[i]);
264
265 return 0;
266 }
267
do_poweroff(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])268 int do_poweroff(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
269 {
270 pmic_bus_write(AXP221_SHUTDOWN, AXP221_SHUTDOWN_POWEROFF);
271
272 /* infinite loop during shutdown */
273 while (1) {}
274
275 /* not reached */
276 return 0;
277 }
278