Merge remote-tracking branch 'regulator/topic/axp20x' into regulator-next
[sfrench/cifs-2.6.git] / drivers / regulator / axp20x-regulator.c
1 /*
2  * AXP20x regulators driver.
3  *
4  * Copyright (C) 2013 Carlo Caione <carlo@caione.org>
5  *
6  * This file is subject to the terms and conditions of the GNU General
7  * Public License. See the file "COPYING" in the main directory of this
8  * archive for more details.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  * GNU General Public License for more details.
14  */
15
16 #include <linux/err.h>
17 #include <linux/init.h>
18 #include <linux/module.h>
19 #include <linux/of.h>
20 #include <linux/of_device.h>
21 #include <linux/platform_device.h>
22 #include <linux/regmap.h>
23 #include <linux/mfd/axp20x.h>
24 #include <linux/regulator/driver.h>
25 #include <linux/regulator/of_regulator.h>
26
27 #define AXP20X_IO_ENABLED               0x03
28 #define AXP20X_IO_DISABLED              0x07
29
30 #define AXP22X_IO_ENABLED               0x03
31 #define AXP22X_IO_DISABLED              0x04
32
33 #define AXP20X_WORKMODE_DCDC2_MASK      BIT(2)
34 #define AXP20X_WORKMODE_DCDC3_MASK      BIT(1)
35 #define AXP22X_WORKMODE_DCDCX_MASK(x)   BIT(x)
36
37 #define AXP20X_FREQ_DCDC_MASK           0x0f
38
39 #define AXP22X_MISC_N_VBUSEN_FUNC       BIT(4)
40
41 #define AXP_DESC_IO(_family, _id, _match, _supply, _min, _max, _step, _vreg,    \
42                     _vmask, _ereg, _emask, _enable_val, _disable_val)           \
43         [_family##_##_id] = {                                                   \
44                 .name           = (_match),                                     \
45                 .supply_name    = (_supply),                                    \
46                 .of_match       = of_match_ptr(_match),                         \
47                 .regulators_node = of_match_ptr("regulators"),                  \
48                 .type           = REGULATOR_VOLTAGE,                            \
49                 .id             = _family##_##_id,                              \
50                 .n_voltages     = (((_max) - (_min)) / (_step) + 1),            \
51                 .owner          = THIS_MODULE,                                  \
52                 .min_uV         = (_min) * 1000,                                \
53                 .uV_step        = (_step) * 1000,                               \
54                 .vsel_reg       = (_vreg),                                      \
55                 .vsel_mask      = (_vmask),                                     \
56                 .enable_reg     = (_ereg),                                      \
57                 .enable_mask    = (_emask),                                     \
58                 .enable_val     = (_enable_val),                                \
59                 .disable_val    = (_disable_val),                               \
60                 .ops            = &axp20x_ops,                                  \
61         }
62
63 #define AXP_DESC(_family, _id, _match, _supply, _min, _max, _step, _vreg,       \
64                  _vmask, _ereg, _emask)                                         \
65         [_family##_##_id] = {                                                   \
66                 .name           = (_match),                                     \
67                 .supply_name    = (_supply),                                    \
68                 .of_match       = of_match_ptr(_match),                         \
69                 .regulators_node = of_match_ptr("regulators"),                  \
70                 .type           = REGULATOR_VOLTAGE,                            \
71                 .id             = _family##_##_id,                              \
72                 .n_voltages     = (((_max) - (_min)) / (_step) + 1),            \
73                 .owner          = THIS_MODULE,                                  \
74                 .min_uV         = (_min) * 1000,                                \
75                 .uV_step        = (_step) * 1000,                               \
76                 .vsel_reg       = (_vreg),                                      \
77                 .vsel_mask      = (_vmask),                                     \
78                 .enable_reg     = (_ereg),                                      \
79                 .enable_mask    = (_emask),                                     \
80                 .ops            = &axp20x_ops,                                  \
81         }
82
83 #define AXP_DESC_SW(_family, _id, _match, _supply, _ereg, _emask)               \
84         [_family##_##_id] = {                                                   \
85                 .name           = (_match),                                     \
86                 .supply_name    = (_supply),                                    \
87                 .of_match       = of_match_ptr(_match),                         \
88                 .regulators_node = of_match_ptr("regulators"),                  \
89                 .type           = REGULATOR_VOLTAGE,                            \
90                 .id             = _family##_##_id,                              \
91                 .owner          = THIS_MODULE,                                  \
92                 .enable_reg     = (_ereg),                                      \
93                 .enable_mask    = (_emask),                                     \
94                 .ops            = &axp20x_ops_sw,                               \
95         }
96
97 #define AXP_DESC_FIXED(_family, _id, _match, _supply, _volt)                    \
98         [_family##_##_id] = {                                                   \
99                 .name           = (_match),                                     \
100                 .supply_name    = (_supply),                                    \
101                 .of_match       = of_match_ptr(_match),                         \
102                 .regulators_node = of_match_ptr("regulators"),                  \
103                 .type           = REGULATOR_VOLTAGE,                            \
104                 .id             = _family##_##_id,                              \
105                 .n_voltages     = 1,                                            \
106                 .owner          = THIS_MODULE,                                  \
107                 .min_uV         = (_volt) * 1000,                               \
108                 .ops            = &axp20x_ops_fixed                             \
109         }
110
111 #define AXP_DESC_RANGES(_family, _id, _match, _supply, _ranges, _n_voltages,    \
112                         _vreg, _vmask, _ereg, _emask)                           \
113         [_family##_##_id] = {                                                   \
114                 .name           = (_match),                                     \
115                 .supply_name    = (_supply),                                    \
116                 .of_match       = of_match_ptr(_match),                         \
117                 .regulators_node = of_match_ptr("regulators"),                  \
118                 .type           = REGULATOR_VOLTAGE,                            \
119                 .id             = _family##_##_id,                              \
120                 .n_voltages     = (_n_voltages),                                \
121                 .owner          = THIS_MODULE,                                  \
122                 .vsel_reg       = (_vreg),                                      \
123                 .vsel_mask      = (_vmask),                                     \
124                 .enable_reg     = (_ereg),                                      \
125                 .enable_mask    = (_emask),                                     \
126                 .linear_ranges  = (_ranges),                                    \
127                 .n_linear_ranges = ARRAY_SIZE(_ranges),                         \
128                 .ops            = &axp20x_ops_range,                            \
129         }
130
131 static const struct regulator_ops axp20x_ops_fixed = {
132         .list_voltage           = regulator_list_voltage_linear,
133 };
134
135 static const struct regulator_ops axp20x_ops_range = {
136         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
137         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
138         .list_voltage           = regulator_list_voltage_linear_range,
139         .enable                 = regulator_enable_regmap,
140         .disable                = regulator_disable_regmap,
141         .is_enabled             = regulator_is_enabled_regmap,
142 };
143
144 static const struct regulator_ops axp20x_ops = {
145         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
146         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
147         .list_voltage           = regulator_list_voltage_linear,
148         .enable                 = regulator_enable_regmap,
149         .disable                = regulator_disable_regmap,
150         .is_enabled             = regulator_is_enabled_regmap,
151 };
152
153 static const struct regulator_ops axp20x_ops_sw = {
154         .enable                 = regulator_enable_regmap,
155         .disable                = regulator_disable_regmap,
156         .is_enabled             = regulator_is_enabled_regmap,
157 };
158
159 static const struct regulator_linear_range axp20x_ldo4_ranges[] = {
160         REGULATOR_LINEAR_RANGE(1250000, 0x0, 0x0, 0),
161         REGULATOR_LINEAR_RANGE(1300000, 0x1, 0x8, 100000),
162         REGULATOR_LINEAR_RANGE(2500000, 0x9, 0x9, 0),
163         REGULATOR_LINEAR_RANGE(2700000, 0xa, 0xb, 100000),
164         REGULATOR_LINEAR_RANGE(3000000, 0xc, 0xf, 100000),
165 };
166
167 static const struct regulator_desc axp20x_regulators[] = {
168         AXP_DESC(AXP20X, DCDC2, "dcdc2", "vin2", 700, 2275, 25,
169                  AXP20X_DCDC2_V_OUT, 0x3f, AXP20X_PWR_OUT_CTRL, 0x10),
170         AXP_DESC(AXP20X, DCDC3, "dcdc3", "vin3", 700, 3500, 25,
171                  AXP20X_DCDC3_V_OUT, 0x7f, AXP20X_PWR_OUT_CTRL, 0x02),
172         AXP_DESC_FIXED(AXP20X, LDO1, "ldo1", "acin", 1300),
173         AXP_DESC(AXP20X, LDO2, "ldo2", "ldo24in", 1800, 3300, 100,
174                  AXP20X_LDO24_V_OUT, 0xf0, AXP20X_PWR_OUT_CTRL, 0x04),
175         AXP_DESC(AXP20X, LDO3, "ldo3", "ldo3in", 700, 3500, 25,
176                  AXP20X_LDO3_V_OUT, 0x7f, AXP20X_PWR_OUT_CTRL, 0x40),
177         AXP_DESC_RANGES(AXP20X, LDO4, "ldo4", "ldo24in", axp20x_ldo4_ranges,
178                         16, AXP20X_LDO24_V_OUT, 0x0f, AXP20X_PWR_OUT_CTRL,
179                         0x08),
180         AXP_DESC_IO(AXP20X, LDO5, "ldo5", "ldo5in", 1800, 3300, 100,
181                     AXP20X_LDO5_V_OUT, 0xf0, AXP20X_GPIO0_CTRL, 0x07,
182                     AXP20X_IO_ENABLED, AXP20X_IO_DISABLED),
183 };
184
185 static const struct regulator_desc axp22x_regulators[] = {
186         AXP_DESC(AXP22X, DCDC1, "dcdc1", "vin1", 1600, 3400, 100,
187                  AXP22X_DCDC1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(1)),
188         AXP_DESC(AXP22X, DCDC2, "dcdc2", "vin2", 600, 1540, 20,
189                  AXP22X_DCDC2_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(2)),
190         AXP_DESC(AXP22X, DCDC3, "dcdc3", "vin3", 600, 1860, 20,
191                  AXP22X_DCDC3_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(3)),
192         AXP_DESC(AXP22X, DCDC4, "dcdc4", "vin4", 600, 1540, 20,
193                  AXP22X_DCDC4_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(4)),
194         AXP_DESC(AXP22X, DCDC5, "dcdc5", "vin5", 1000, 2550, 50,
195                  AXP22X_DCDC5_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(5)),
196         /* secondary switchable output of DCDC1 */
197         AXP_DESC_SW(AXP22X, DC1SW, "dc1sw", NULL, AXP22X_PWR_OUT_CTRL2,
198                     BIT(7)),
199         /* LDO regulator internally chained to DCDC5 */
200         AXP_DESC(AXP22X, DC5LDO, "dc5ldo", NULL, 700, 1400, 100,
201                  AXP22X_DC5LDO_V_OUT, 0x7, AXP22X_PWR_OUT_CTRL1, BIT(0)),
202         AXP_DESC(AXP22X, ALDO1, "aldo1", "aldoin", 700, 3300, 100,
203                  AXP22X_ALDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(6)),
204         AXP_DESC(AXP22X, ALDO2, "aldo2", "aldoin", 700, 3300, 100,
205                  AXP22X_ALDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(7)),
206         AXP_DESC(AXP22X, ALDO3, "aldo3", "aldoin", 700, 3300, 100,
207                  AXP22X_ALDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL3, BIT(7)),
208         AXP_DESC(AXP22X, DLDO1, "dldo1", "dldoin", 700, 3300, 100,
209                  AXP22X_DLDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(3)),
210         AXP_DESC(AXP22X, DLDO2, "dldo2", "dldoin", 700, 3300, 100,
211                  AXP22X_DLDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(4)),
212         AXP_DESC(AXP22X, DLDO3, "dldo3", "dldoin", 700, 3300, 100,
213                  AXP22X_DLDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(5)),
214         AXP_DESC(AXP22X, DLDO4, "dldo4", "dldoin", 700, 3300, 100,
215                  AXP22X_DLDO4_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(6)),
216         AXP_DESC(AXP22X, ELDO1, "eldo1", "eldoin", 700, 3300, 100,
217                  AXP22X_ELDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(0)),
218         AXP_DESC(AXP22X, ELDO2, "eldo2", "eldoin", 700, 3300, 100,
219                  AXP22X_ELDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(1)),
220         AXP_DESC(AXP22X, ELDO3, "eldo3", "eldoin", 700, 3300, 100,
221                  AXP22X_ELDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(2)),
222         /* Note the datasheet only guarantees reliable operation up to
223          * 3.3V, this needs to be enforced via dts provided constraints */
224         AXP_DESC_IO(AXP22X, LDO_IO0, "ldo_io0", "ips", 700, 3800, 100,
225                     AXP22X_LDO_IO0_V_OUT, 0x1f, AXP20X_GPIO0_CTRL, 0x07,
226                     AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
227         /* Note the datasheet only guarantees reliable operation up to
228          * 3.3V, this needs to be enforced via dts provided constraints */
229         AXP_DESC_IO(AXP22X, LDO_IO1, "ldo_io1", "ips", 700, 3800, 100,
230                     AXP22X_LDO_IO1_V_OUT, 0x1f, AXP20X_GPIO1_CTRL, 0x07,
231                     AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
232         AXP_DESC_FIXED(AXP22X, RTC_LDO, "rtc_ldo", "ips", 3000),
233 };
234
235 static const struct regulator_desc axp22x_drivevbus_regulator = {
236         .name           = "drivevbus",
237         .supply_name    = "drivevbus",
238         .of_match       = of_match_ptr("drivevbus"),
239         .regulators_node = of_match_ptr("regulators"),
240         .type           = REGULATOR_VOLTAGE,
241         .owner          = THIS_MODULE,
242         .enable_reg     = AXP20X_VBUS_IPSOUT_MGMT,
243         .enable_mask    = BIT(2),
244         .ops            = &axp20x_ops_sw,
245 };
246
247 /* DCDC ranges shared with AXP813 */
248 static const struct regulator_linear_range axp803_dcdc234_ranges[] = {
249         REGULATOR_LINEAR_RANGE(500000, 0x0, 0x46, 10000),
250         REGULATOR_LINEAR_RANGE(1220000, 0x47, 0x4b, 20000),
251 };
252
253 static const struct regulator_linear_range axp803_dcdc5_ranges[] = {
254         REGULATOR_LINEAR_RANGE(800000, 0x0, 0x20, 10000),
255         REGULATOR_LINEAR_RANGE(1140000, 0x21, 0x44, 20000),
256 };
257
258 static const struct regulator_linear_range axp803_dcdc6_ranges[] = {
259         REGULATOR_LINEAR_RANGE(600000, 0x0, 0x32, 10000),
260         REGULATOR_LINEAR_RANGE(1120000, 0x33, 0x47, 20000),
261 };
262
263 /* AXP806's CLDO2 and AXP809's DLDO1 shares the same range */
264 static const struct regulator_linear_range axp803_dldo2_ranges[] = {
265         REGULATOR_LINEAR_RANGE(700000, 0x0, 0x1a, 100000),
266         REGULATOR_LINEAR_RANGE(3400000, 0x1b, 0x1f, 200000),
267 };
268
269 static const struct regulator_desc axp803_regulators[] = {
270         AXP_DESC(AXP803, DCDC1, "dcdc1", "vin1", 1600, 3400, 100,
271                  AXP803_DCDC1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(0)),
272         AXP_DESC_RANGES(AXP803, DCDC2, "dcdc2", "vin2", axp803_dcdc234_ranges,
273                         76, AXP803_DCDC2_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
274                         BIT(1)),
275         AXP_DESC_RANGES(AXP803, DCDC3, "dcdc3", "vin3", axp803_dcdc234_ranges,
276                         76, AXP803_DCDC3_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
277                         BIT(2)),
278         AXP_DESC_RANGES(AXP803, DCDC4, "dcdc4", "vin4", axp803_dcdc234_ranges,
279                         76, AXP803_DCDC4_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
280                         BIT(3)),
281         AXP_DESC_RANGES(AXP803, DCDC5, "dcdc5", "vin5", axp803_dcdc5_ranges,
282                         68, AXP803_DCDC5_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
283                         BIT(4)),
284         AXP_DESC_RANGES(AXP803, DCDC6, "dcdc6", "vin6", axp803_dcdc6_ranges,
285                         72, AXP803_DCDC6_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
286                         BIT(5)),
287         /* secondary switchable output of DCDC1 */
288         AXP_DESC_SW(AXP803, DC1SW, "dc1sw", NULL, AXP22X_PWR_OUT_CTRL2,
289                     BIT(7)),
290         AXP_DESC(AXP803, ALDO1, "aldo1", "aldoin", 700, 3300, 100,
291                  AXP22X_ALDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL3, BIT(5)),
292         AXP_DESC(AXP803, ALDO2, "aldo2", "aldoin", 700, 3300, 100,
293                  AXP22X_ALDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL3, BIT(6)),
294         AXP_DESC(AXP803, ALDO3, "aldo3", "aldoin", 700, 3300, 100,
295                  AXP22X_ALDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL3, BIT(7)),
296         AXP_DESC(AXP803, DLDO1, "dldo1", "dldoin", 700, 3300, 100,
297                  AXP22X_DLDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(3)),
298         AXP_DESC_RANGES(AXP803, DLDO2, "dldo2", "dldoin", axp803_dldo2_ranges,
299                         32, AXP22X_DLDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2,
300                         BIT(4)),
301         AXP_DESC(AXP803, DLDO3, "dldo3", "dldoin", 700, 3300, 100,
302                  AXP22X_DLDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(5)),
303         AXP_DESC(AXP803, DLDO4, "dldo4", "dldoin", 700, 3300, 100,
304                  AXP22X_DLDO4_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(6)),
305         AXP_DESC(AXP803, ELDO1, "eldo1", "eldoin", 700, 1900, 50,
306                  AXP22X_ELDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(0)),
307         AXP_DESC(AXP803, ELDO2, "eldo2", "eldoin", 700, 1900, 50,
308                  AXP22X_ELDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(1)),
309         AXP_DESC(AXP803, ELDO3, "eldo3", "eldoin", 700, 1900, 50,
310                  AXP22X_ELDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(2)),
311         AXP_DESC(AXP803, FLDO1, "fldo1", "fldoin", 700, 1450, 50,
312                  AXP803_FLDO1_V_OUT, 0x0f, AXP22X_PWR_OUT_CTRL3, BIT(2)),
313         AXP_DESC(AXP803, FLDO2, "fldo2", "fldoin", 700, 1450, 50,
314                  AXP803_FLDO2_V_OUT, 0x0f, AXP22X_PWR_OUT_CTRL3, BIT(3)),
315         AXP_DESC_IO(AXP803, LDO_IO0, "ldo-io0", "ips", 700, 3300, 100,
316                     AXP22X_LDO_IO0_V_OUT, 0x1f, AXP20X_GPIO0_CTRL, 0x07,
317                     AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
318         AXP_DESC_IO(AXP803, LDO_IO1, "ldo-io1", "ips", 700, 3300, 100,
319                     AXP22X_LDO_IO1_V_OUT, 0x1f, AXP20X_GPIO1_CTRL, 0x07,
320                     AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
321         AXP_DESC_FIXED(AXP803, RTC_LDO, "rtc-ldo", "ips", 3000),
322 };
323
324 static const struct regulator_linear_range axp806_dcdca_ranges[] = {
325         REGULATOR_LINEAR_RANGE(600000, 0x0, 0x32, 10000),
326         REGULATOR_LINEAR_RANGE(1120000, 0x33, 0x47, 20000),
327 };
328
329 static const struct regulator_linear_range axp806_dcdcd_ranges[] = {
330         REGULATOR_LINEAR_RANGE(600000, 0x0, 0x2d, 20000),
331         REGULATOR_LINEAR_RANGE(1600000, 0x2e, 0x3f, 100000),
332 };
333
334 static const struct regulator_desc axp806_regulators[] = {
335         AXP_DESC_RANGES(AXP806, DCDCA, "dcdca", "vina", axp806_dcdca_ranges,
336                         72, AXP806_DCDCA_V_CTRL, 0x7f, AXP806_PWR_OUT_CTRL1,
337                         BIT(0)),
338         AXP_DESC(AXP806, DCDCB, "dcdcb", "vinb", 1000, 2550, 50,
339                  AXP806_DCDCB_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL1, BIT(1)),
340         AXP_DESC_RANGES(AXP806, DCDCC, "dcdcc", "vinc", axp806_dcdca_ranges,
341                         72, AXP806_DCDCC_V_CTRL, 0x7f, AXP806_PWR_OUT_CTRL1,
342                         BIT(2)),
343         AXP_DESC_RANGES(AXP806, DCDCD, "dcdcd", "vind", axp806_dcdcd_ranges,
344                         64, AXP806_DCDCD_V_CTRL, 0x3f, AXP806_PWR_OUT_CTRL1,
345                         BIT(3)),
346         AXP_DESC(AXP806, DCDCE, "dcdce", "vine", 1100, 3400, 100,
347                  AXP806_DCDCE_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL1, BIT(4)),
348         AXP_DESC(AXP806, ALDO1, "aldo1", "aldoin", 700, 3300, 100,
349                  AXP806_ALDO1_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL1, BIT(5)),
350         AXP_DESC(AXP806, ALDO2, "aldo2", "aldoin", 700, 3400, 100,
351                  AXP806_ALDO2_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL1, BIT(6)),
352         AXP_DESC(AXP806, ALDO3, "aldo3", "aldoin", 700, 3300, 100,
353                  AXP806_ALDO3_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL1, BIT(7)),
354         AXP_DESC(AXP806, BLDO1, "bldo1", "bldoin", 700, 1900, 100,
355                  AXP806_BLDO1_V_CTRL, 0x0f, AXP806_PWR_OUT_CTRL2, BIT(0)),
356         AXP_DESC(AXP806, BLDO2, "bldo2", "bldoin", 700, 1900, 100,
357                  AXP806_BLDO2_V_CTRL, 0x0f, AXP806_PWR_OUT_CTRL2, BIT(1)),
358         AXP_DESC(AXP806, BLDO3, "bldo3", "bldoin", 700, 1900, 100,
359                  AXP806_BLDO3_V_CTRL, 0x0f, AXP806_PWR_OUT_CTRL2, BIT(2)),
360         AXP_DESC(AXP806, BLDO4, "bldo4", "bldoin", 700, 1900, 100,
361                  AXP806_BLDO4_V_CTRL, 0x0f, AXP806_PWR_OUT_CTRL2, BIT(3)),
362         AXP_DESC(AXP806, CLDO1, "cldo1", "cldoin", 700, 3300, 100,
363                  AXP806_CLDO1_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL2, BIT(4)),
364         AXP_DESC_RANGES(AXP806, CLDO2, "cldo2", "cldoin", axp803_dldo2_ranges,
365                         32, AXP806_CLDO2_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL2,
366                         BIT(5)),
367         AXP_DESC(AXP806, CLDO3, "cldo3", "cldoin", 700, 3300, 100,
368                  AXP806_CLDO3_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL2, BIT(6)),
369         AXP_DESC_SW(AXP806, SW, "sw", "swin", AXP806_PWR_OUT_CTRL2, BIT(7)),
370 };
371
372 static const struct regulator_linear_range axp809_dcdc4_ranges[] = {
373         REGULATOR_LINEAR_RANGE(600000, 0x0, 0x2f, 20000),
374         REGULATOR_LINEAR_RANGE(1800000, 0x30, 0x38, 100000),
375 };
376
377 static const struct regulator_desc axp809_regulators[] = {
378         AXP_DESC(AXP809, DCDC1, "dcdc1", "vin1", 1600, 3400, 100,
379                  AXP22X_DCDC1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(1)),
380         AXP_DESC(AXP809, DCDC2, "dcdc2", "vin2", 600, 1540, 20,
381                  AXP22X_DCDC2_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(2)),
382         AXP_DESC(AXP809, DCDC3, "dcdc3", "vin3", 600, 1860, 20,
383                  AXP22X_DCDC3_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(3)),
384         AXP_DESC_RANGES(AXP809, DCDC4, "dcdc4", "vin4", axp809_dcdc4_ranges,
385                         57, AXP22X_DCDC4_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1,
386                         BIT(4)),
387         AXP_DESC(AXP809, DCDC5, "dcdc5", "vin5", 1000, 2550, 50,
388                  AXP22X_DCDC5_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(5)),
389         /* secondary switchable output of DCDC1 */
390         AXP_DESC_SW(AXP809, DC1SW, "dc1sw", NULL, AXP22X_PWR_OUT_CTRL2,
391                     BIT(7)),
392         /* LDO regulator internally chained to DCDC5 */
393         AXP_DESC(AXP809, DC5LDO, "dc5ldo", NULL, 700, 1400, 100,
394                  AXP22X_DC5LDO_V_OUT, 0x7, AXP22X_PWR_OUT_CTRL1, BIT(0)),
395         AXP_DESC(AXP809, ALDO1, "aldo1", "aldoin", 700, 3300, 100,
396                  AXP22X_ALDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(6)),
397         AXP_DESC(AXP809, ALDO2, "aldo2", "aldoin", 700, 3300, 100,
398                  AXP22X_ALDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(7)),
399         AXP_DESC(AXP809, ALDO3, "aldo3", "aldoin", 700, 3300, 100,
400                  AXP22X_ALDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(5)),
401         AXP_DESC_RANGES(AXP809, DLDO1, "dldo1", "dldoin", axp803_dldo2_ranges,
402                         32, AXP22X_DLDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2,
403                         BIT(3)),
404         AXP_DESC(AXP809, DLDO2, "dldo2", "dldoin", 700, 3300, 100,
405                  AXP22X_DLDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(4)),
406         AXP_DESC(AXP809, ELDO1, "eldo1", "eldoin", 700, 3300, 100,
407                  AXP22X_ELDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(0)),
408         AXP_DESC(AXP809, ELDO2, "eldo2", "eldoin", 700, 3300, 100,
409                  AXP22X_ELDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(1)),
410         AXP_DESC(AXP809, ELDO3, "eldo3", "eldoin", 700, 3300, 100,
411                  AXP22X_ELDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(2)),
412         /*
413          * Note the datasheet only guarantees reliable operation up to
414          * 3.3V, this needs to be enforced via dts provided constraints
415          */
416         AXP_DESC_IO(AXP809, LDO_IO0, "ldo_io0", "ips", 700, 3800, 100,
417                     AXP22X_LDO_IO0_V_OUT, 0x1f, AXP20X_GPIO0_CTRL, 0x07,
418                     AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
419         /*
420          * Note the datasheet only guarantees reliable operation up to
421          * 3.3V, this needs to be enforced via dts provided constraints
422          */
423         AXP_DESC_IO(AXP809, LDO_IO1, "ldo_io1", "ips", 700, 3800, 100,
424                     AXP22X_LDO_IO1_V_OUT, 0x1f, AXP20X_GPIO1_CTRL, 0x07,
425                     AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
426         AXP_DESC_FIXED(AXP809, RTC_LDO, "rtc_ldo", "ips", 1800),
427         AXP_DESC_SW(AXP809, SW, "sw", "swin", AXP22X_PWR_OUT_CTRL2, BIT(6)),
428 };
429
430 static const struct regulator_desc axp813_regulators[] = {
431         AXP_DESC(AXP813, DCDC1, "dcdc1", "vin1", 1600, 3400, 100,
432                  AXP803_DCDC1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(0)),
433         AXP_DESC_RANGES(AXP813, DCDC2, "dcdc2", "vin2", axp803_dcdc234_ranges,
434                         76, AXP803_DCDC2_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
435                         BIT(1)),
436         AXP_DESC_RANGES(AXP813, DCDC3, "dcdc3", "vin3", axp803_dcdc234_ranges,
437                         76, AXP803_DCDC3_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
438                         BIT(2)),
439         AXP_DESC_RANGES(AXP813, DCDC4, "dcdc4", "vin4", axp803_dcdc234_ranges,
440                         76, AXP803_DCDC4_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
441                         BIT(3)),
442         AXP_DESC_RANGES(AXP813, DCDC5, "dcdc5", "vin5", axp803_dcdc5_ranges,
443                         68, AXP803_DCDC5_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
444                         BIT(4)),
445         AXP_DESC_RANGES(AXP813, DCDC6, "dcdc6", "vin6", axp803_dcdc6_ranges,
446                         72, AXP803_DCDC6_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
447                         BIT(5)),
448         AXP_DESC_RANGES(AXP813, DCDC7, "dcdc7", "vin7", axp803_dcdc6_ranges,
449                         72, AXP813_DCDC7_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
450                         BIT(6)),
451         AXP_DESC(AXP813, ALDO1, "aldo1", "aldoin", 700, 3300, 100,
452                  AXP22X_ALDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL3, BIT(5)),
453         AXP_DESC(AXP813, ALDO2, "aldo2", "aldoin", 700, 3300, 100,
454                  AXP22X_ALDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL3, BIT(6)),
455         AXP_DESC(AXP813, ALDO3, "aldo3", "aldoin", 700, 3300, 100,
456                  AXP22X_ALDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL3, BIT(7)),
457         AXP_DESC(AXP813, DLDO1, "dldo1", "dldoin", 700, 3300, 100,
458                  AXP22X_DLDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(3)),
459         AXP_DESC_RANGES(AXP813, DLDO2, "dldo2", "dldoin", axp803_dldo2_ranges,
460                         32, AXP22X_DLDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2,
461                         BIT(4)),
462         AXP_DESC(AXP813, DLDO3, "dldo3", "dldoin", 700, 3300, 100,
463                  AXP22X_DLDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(5)),
464         AXP_DESC(AXP813, DLDO4, "dldo4", "dldoin", 700, 3300, 100,
465                  AXP22X_DLDO4_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(6)),
466         AXP_DESC(AXP813, ELDO1, "eldo1", "eldoin", 700, 1900, 50,
467                  AXP22X_ELDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(0)),
468         AXP_DESC(AXP813, ELDO2, "eldo2", "eldoin", 700, 1900, 50,
469                  AXP22X_ELDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(1)),
470         AXP_DESC(AXP813, ELDO3, "eldo3", "eldoin", 700, 1900, 50,
471                  AXP22X_ELDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(2)),
472         /* to do / check ... */
473         AXP_DESC(AXP813, FLDO1, "fldo1", "fldoin", 700, 1450, 50,
474                  AXP803_FLDO1_V_OUT, 0x0f, AXP22X_PWR_OUT_CTRL3, BIT(2)),
475         AXP_DESC(AXP813, FLDO2, "fldo2", "fldoin", 700, 1450, 50,
476                  AXP803_FLDO2_V_OUT, 0x0f, AXP22X_PWR_OUT_CTRL3, BIT(3)),
477         /*
478          * TODO: FLDO3 = {DCDC5, FLDOIN} / 2
479          *
480          * This means FLDO3 effectively switches supplies at runtime,
481          * something the regulator subsystem does not support.
482          */
483         AXP_DESC_FIXED(AXP813, RTC_LDO, "rtc-ldo", "ips", 1800),
484         AXP_DESC_IO(AXP813, LDO_IO0, "ldo-io0", "ips", 700, 3300, 100,
485                     AXP22X_LDO_IO0_V_OUT, 0x1f, AXP20X_GPIO0_CTRL, 0x07,
486                     AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
487         AXP_DESC_IO(AXP813, LDO_IO1, "ldo-io1", "ips", 700, 3300, 100,
488                     AXP22X_LDO_IO1_V_OUT, 0x1f, AXP20X_GPIO1_CTRL, 0x07,
489                     AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
490         AXP_DESC_SW(AXP813, SW, "sw", "swin", AXP22X_PWR_OUT_CTRL2, BIT(7)),
491 };
492
493 static int axp20x_set_dcdc_freq(struct platform_device *pdev, u32 dcdcfreq)
494 {
495         struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
496         unsigned int reg = AXP20X_DCDC_FREQ;
497         u32 min, max, def, step;
498
499         switch (axp20x->variant) {
500         case AXP202_ID:
501         case AXP209_ID:
502                 min = 750;
503                 max = 1875;
504                 def = 1500;
505                 step = 75;
506                 break;
507         case AXP803_ID:
508         case AXP813_ID:
509                 /*
510                  * AXP803/AXP813 DCDC work frequency setting has the same
511                  * range and step as AXP22X, but at a different register.
512                  * Fall through to the check below.
513                  * (See include/linux/mfd/axp20x.h)
514                  */
515                 reg = AXP803_DCDC_FREQ_CTRL;
516         case AXP806_ID:
517                 /*
518                  * AXP806 also have DCDC work frequency setting register at a
519                  * different position.
520                  */
521                 if (axp20x->variant == AXP806_ID)
522                         reg = AXP806_DCDC_FREQ_CTRL;
523         case AXP221_ID:
524         case AXP223_ID:
525         case AXP809_ID:
526                 min = 1800;
527                 max = 4050;
528                 def = 3000;
529                 step = 150;
530                 break;
531         default:
532                 dev_err(&pdev->dev,
533                         "Setting DCDC frequency for unsupported AXP variant\n");
534                 return -EINVAL;
535         }
536
537         if (dcdcfreq == 0)
538                 dcdcfreq = def;
539
540         if (dcdcfreq < min) {
541                 dcdcfreq = min;
542                 dev_warn(&pdev->dev, "DCDC frequency too low. Set to %ukHz\n",
543                          min);
544         }
545
546         if (dcdcfreq > max) {
547                 dcdcfreq = max;
548                 dev_warn(&pdev->dev, "DCDC frequency too high. Set to %ukHz\n",
549                          max);
550         }
551
552         dcdcfreq = (dcdcfreq - min) / step;
553
554         return regmap_update_bits(axp20x->regmap, reg,
555                                   AXP20X_FREQ_DCDC_MASK, dcdcfreq);
556 }
557
558 static int axp20x_regulator_parse_dt(struct platform_device *pdev)
559 {
560         struct device_node *np, *regulators;
561         int ret;
562         u32 dcdcfreq = 0;
563
564         np = of_node_get(pdev->dev.parent->of_node);
565         if (!np)
566                 return 0;
567
568         regulators = of_get_child_by_name(np, "regulators");
569         if (!regulators) {
570                 dev_warn(&pdev->dev, "regulators node not found\n");
571         } else {
572                 of_property_read_u32(regulators, "x-powers,dcdc-freq", &dcdcfreq);
573                 ret = axp20x_set_dcdc_freq(pdev, dcdcfreq);
574                 if (ret < 0) {
575                         dev_err(&pdev->dev, "Error setting dcdc frequency: %d\n", ret);
576                         return ret;
577                 }
578
579                 of_node_put(regulators);
580         }
581
582         return 0;
583 }
584
585 static int axp20x_set_dcdc_workmode(struct regulator_dev *rdev, int id, u32 workmode)
586 {
587         struct axp20x_dev *axp20x = rdev_get_drvdata(rdev);
588         unsigned int reg = AXP20X_DCDC_MODE;
589         unsigned int mask;
590
591         switch (axp20x->variant) {
592         case AXP202_ID:
593         case AXP209_ID:
594                 if ((id != AXP20X_DCDC2) && (id != AXP20X_DCDC3))
595                         return -EINVAL;
596
597                 mask = AXP20X_WORKMODE_DCDC2_MASK;
598                 if (id == AXP20X_DCDC3)
599                         mask = AXP20X_WORKMODE_DCDC3_MASK;
600
601                 workmode <<= ffs(mask) - 1;
602                 break;
603
604         case AXP806_ID:
605                 reg = AXP806_DCDC_MODE_CTRL2;
606                 /*
607                  * AXP806 DCDC regulator IDs have the same range as AXP22X.
608                  * Fall through to the check below.
609                  * (See include/linux/mfd/axp20x.h)
610                  */
611         case AXP221_ID:
612         case AXP223_ID:
613         case AXP809_ID:
614                 if (id < AXP22X_DCDC1 || id > AXP22X_DCDC5)
615                         return -EINVAL;
616
617                 mask = AXP22X_WORKMODE_DCDCX_MASK(id - AXP22X_DCDC1);
618                 workmode <<= id - AXP22X_DCDC1;
619                 break;
620
621         case AXP803_ID:
622                 if (id < AXP803_DCDC1 || id > AXP803_DCDC6)
623                         return -EINVAL;
624
625                 mask = AXP22X_WORKMODE_DCDCX_MASK(id - AXP803_DCDC1);
626                 workmode <<= id - AXP803_DCDC1;
627                 break;
628
629         case AXP813_ID:
630                 if (id < AXP813_DCDC1 || id > AXP813_DCDC7)
631                         return -EINVAL;
632
633                 mask = AXP22X_WORKMODE_DCDCX_MASK(id - AXP813_DCDC1);
634                 workmode <<= id - AXP813_DCDC1;
635                 break;
636
637         default:
638                 /* should not happen */
639                 WARN_ON(1);
640                 return -EINVAL;
641         }
642
643         return regmap_update_bits(rdev->regmap, reg, mask, workmode);
644 }
645
646 /*
647  * This function checks whether a regulator is part of a poly-phase
648  * output setup based on the registers settings. Returns true if it is.
649  */
650 static bool axp20x_is_polyphase_slave(struct axp20x_dev *axp20x, int id)
651 {
652         u32 reg = 0;
653
654         /*
655          * Currently in our supported AXP variants, only AXP803, AXP806,
656          * and AXP813 have polyphase regulators.
657          */
658         switch (axp20x->variant) {
659         case AXP803_ID:
660         case AXP813_ID:
661                 regmap_read(axp20x->regmap, AXP803_POLYPHASE_CTRL, &reg);
662
663                 switch (id) {
664                 case AXP803_DCDC3:
665                         return !!(reg & BIT(6));
666                 case AXP803_DCDC6:
667                         return !!(reg & BIT(5));
668                 }
669                 break;
670
671         case AXP806_ID:
672                 regmap_read(axp20x->regmap, AXP806_DCDC_MODE_CTRL2, &reg);
673
674                 switch (id) {
675                 case AXP806_DCDCB:
676                         return (((reg & GENMASK(7, 6)) == BIT(6)) ||
677                                 ((reg & GENMASK(7, 6)) == BIT(7)));
678                 case AXP806_DCDCC:
679                         return ((reg & GENMASK(7, 6)) == BIT(7));
680                 case AXP806_DCDCE:
681                         return !!(reg & BIT(5));
682                 }
683                 break;
684
685         default:
686                 return false;
687         }
688
689         return false;
690 }
691
692 static int axp20x_regulator_probe(struct platform_device *pdev)
693 {
694         struct regulator_dev *rdev;
695         struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
696         const struct regulator_desc *regulators;
697         struct regulator_config config = {
698                 .dev = pdev->dev.parent,
699                 .regmap = axp20x->regmap,
700                 .driver_data = axp20x,
701         };
702         int ret, i, nregulators;
703         u32 workmode;
704         const char *dcdc1_name = axp22x_regulators[AXP22X_DCDC1].name;
705         const char *dcdc5_name = axp22x_regulators[AXP22X_DCDC5].name;
706         bool drivevbus = false;
707
708         switch (axp20x->variant) {
709         case AXP202_ID:
710         case AXP209_ID:
711                 regulators = axp20x_regulators;
712                 nregulators = AXP20X_REG_ID_MAX;
713                 break;
714         case AXP221_ID:
715         case AXP223_ID:
716                 regulators = axp22x_regulators;
717                 nregulators = AXP22X_REG_ID_MAX;
718                 drivevbus = of_property_read_bool(pdev->dev.parent->of_node,
719                                                   "x-powers,drive-vbus-en");
720                 break;
721         case AXP803_ID:
722                 regulators = axp803_regulators;
723                 nregulators = AXP803_REG_ID_MAX;
724                 break;
725         case AXP806_ID:
726                 regulators = axp806_regulators;
727                 nregulators = AXP806_REG_ID_MAX;
728                 break;
729         case AXP809_ID:
730                 regulators = axp809_regulators;
731                 nregulators = AXP809_REG_ID_MAX;
732                 break;
733         case AXP813_ID:
734                 regulators = axp813_regulators;
735                 nregulators = AXP813_REG_ID_MAX;
736                 drivevbus = of_property_read_bool(pdev->dev.parent->of_node,
737                                                   "x-powers,drive-vbus-en");
738                 break;
739         default:
740                 dev_err(&pdev->dev, "Unsupported AXP variant: %ld\n",
741                         axp20x->variant);
742                 return -EINVAL;
743         }
744
745         /* This only sets the dcdc freq. Ignore any errors */
746         axp20x_regulator_parse_dt(pdev);
747
748         for (i = 0; i < nregulators; i++) {
749                 const struct regulator_desc *desc = &regulators[i];
750                 struct regulator_desc *new_desc;
751
752                 /*
753                  * If this regulator is a slave in a poly-phase setup,
754                  * skip it, as its controls are bound to the master
755                  * regulator and won't work.
756                  */
757                 if (axp20x_is_polyphase_slave(axp20x, i))
758                         continue;
759
760                 /* Support for AXP813's FLDO3 is not implemented */
761                 if (axp20x->variant == AXP813_ID && i == AXP813_FLDO3)
762                         continue;
763
764                 /*
765                  * Regulators DC1SW and DC5LDO are connected internally,
766                  * so we have to handle their supply names separately.
767                  *
768                  * We always register the regulators in proper sequence,
769                  * so the supply names are correctly read. See the last
770                  * part of this loop to see where we save the DT defined
771                  * name.
772                  */
773                 if ((regulators == axp22x_regulators && i == AXP22X_DC1SW) ||
774                     (regulators == axp803_regulators && i == AXP803_DC1SW) ||
775                     (regulators == axp809_regulators && i == AXP809_DC1SW)) {
776                         new_desc = devm_kzalloc(&pdev->dev, sizeof(*desc),
777                                                 GFP_KERNEL);
778                         if (!new_desc)
779                                 return -ENOMEM;
780
781                         *new_desc = regulators[i];
782                         new_desc->supply_name = dcdc1_name;
783                         desc = new_desc;
784                 }
785
786                 if ((regulators == axp22x_regulators && i == AXP22X_DC5LDO) ||
787                     (regulators == axp809_regulators && i == AXP809_DC5LDO)) {
788                         new_desc = devm_kzalloc(&pdev->dev, sizeof(*desc),
789                                                 GFP_KERNEL);
790                         if (!new_desc)
791                                 return -ENOMEM;
792
793                         *new_desc = regulators[i];
794                         new_desc->supply_name = dcdc5_name;
795                         desc = new_desc;
796                 }
797
798                 rdev = devm_regulator_register(&pdev->dev, desc, &config);
799                 if (IS_ERR(rdev)) {
800                         dev_err(&pdev->dev, "Failed to register %s\n",
801                                 regulators[i].name);
802
803                         return PTR_ERR(rdev);
804                 }
805
806                 ret = of_property_read_u32(rdev->dev.of_node,
807                                            "x-powers,dcdc-workmode",
808                                            &workmode);
809                 if (!ret) {
810                         if (axp20x_set_dcdc_workmode(rdev, i, workmode))
811                                 dev_err(&pdev->dev, "Failed to set workmode on %s\n",
812                                         rdev->desc->name);
813                 }
814
815                 /*
816                  * Save AXP22X DCDC1 / DCDC5 regulator names for later.
817                  */
818                 if ((regulators == axp22x_regulators && i == AXP22X_DCDC1) ||
819                     (regulators == axp809_regulators && i == AXP809_DCDC1))
820                         of_property_read_string(rdev->dev.of_node,
821                                                 "regulator-name",
822                                                 &dcdc1_name);
823
824                 if ((regulators == axp22x_regulators && i == AXP22X_DCDC5) ||
825                     (regulators == axp809_regulators && i == AXP809_DCDC5))
826                         of_property_read_string(rdev->dev.of_node,
827                                                 "regulator-name",
828                                                 &dcdc5_name);
829         }
830
831         if (drivevbus) {
832                 /* Change N_VBUSEN sense pin to DRIVEVBUS output pin */
833                 regmap_update_bits(axp20x->regmap, AXP20X_OVER_TMP,
834                                    AXP22X_MISC_N_VBUSEN_FUNC, 0);
835                 rdev = devm_regulator_register(&pdev->dev,
836                                                &axp22x_drivevbus_regulator,
837                                                &config);
838                 if (IS_ERR(rdev)) {
839                         dev_err(&pdev->dev, "Failed to register drivevbus\n");
840                         return PTR_ERR(rdev);
841                 }
842         }
843
844         return 0;
845 }
846
847 static struct platform_driver axp20x_regulator_driver = {
848         .probe  = axp20x_regulator_probe,
849         .driver = {
850                 .name           = "axp20x-regulator",
851         },
852 };
853
854 module_platform_driver(axp20x_regulator_driver);
855
856 MODULE_LICENSE("GPL v2");
857 MODULE_AUTHOR("Carlo Caione <carlo@caione.org>");
858 MODULE_DESCRIPTION("Regulator Driver for AXP20X PMIC");
859 MODULE_ALIAS("platform:axp20x-regulator");