Merge remote-tracking branch 'regulator/fix/qcom-spmi' into regulator-linus
[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 static const struct regulator_linear_range axp803_dcdc234_ranges[] = {
248         REGULATOR_LINEAR_RANGE(500000, 0x0, 0x46, 10000),
249         REGULATOR_LINEAR_RANGE(1220000, 0x47, 0x4b, 20000),
250 };
251
252 static const struct regulator_linear_range axp803_dcdc5_ranges[] = {
253         REGULATOR_LINEAR_RANGE(800000, 0x0, 0x20, 10000),
254         REGULATOR_LINEAR_RANGE(1140000, 0x21, 0x44, 20000),
255 };
256
257 static const struct regulator_linear_range axp803_dcdc6_ranges[] = {
258         REGULATOR_LINEAR_RANGE(600000, 0x0, 0x32, 10000),
259         REGULATOR_LINEAR_RANGE(1120000, 0x33, 0x47, 20000),
260 };
261
262 /* AXP806's CLDO2 and AXP809's DLDO1 shares the same range */
263 static const struct regulator_linear_range axp803_dldo2_ranges[] = {
264         REGULATOR_LINEAR_RANGE(700000, 0x0, 0x1a, 100000),
265         REGULATOR_LINEAR_RANGE(3400000, 0x1b, 0x1f, 200000),
266 };
267
268 static const struct regulator_desc axp803_regulators[] = {
269         AXP_DESC(AXP803, DCDC1, "dcdc1", "vin1", 1600, 3400, 100,
270                  AXP803_DCDC1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(0)),
271         AXP_DESC_RANGES(AXP803, DCDC2, "dcdc2", "vin2", axp803_dcdc234_ranges,
272                         76, AXP803_DCDC2_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
273                         BIT(1)),
274         AXP_DESC_RANGES(AXP803, DCDC3, "dcdc3", "vin3", axp803_dcdc234_ranges,
275                         76, AXP803_DCDC3_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
276                         BIT(2)),
277         AXP_DESC_RANGES(AXP803, DCDC4, "dcdc4", "vin4", axp803_dcdc234_ranges,
278                         76, AXP803_DCDC4_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
279                         BIT(3)),
280         AXP_DESC_RANGES(AXP803, DCDC5, "dcdc5", "vin5", axp803_dcdc5_ranges,
281                         68, AXP803_DCDC5_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
282                         BIT(4)),
283         AXP_DESC_RANGES(AXP803, DCDC6, "dcdc6", "vin6", axp803_dcdc6_ranges,
284                         72, AXP803_DCDC6_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
285                         BIT(5)),
286         /* secondary switchable output of DCDC1 */
287         AXP_DESC_SW(AXP803, DC1SW, "dc1sw", NULL, AXP22X_PWR_OUT_CTRL2,
288                     BIT(7)),
289         AXP_DESC(AXP803, ALDO1, "aldo1", "aldoin", 700, 3300, 100,
290                  AXP22X_ALDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL3, BIT(5)),
291         AXP_DESC(AXP803, ALDO2, "aldo2", "aldoin", 700, 3300, 100,
292                  AXP22X_ALDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL3, BIT(6)),
293         AXP_DESC(AXP803, ALDO3, "aldo3", "aldoin", 700, 3300, 100,
294                  AXP22X_ALDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL3, BIT(7)),
295         AXP_DESC(AXP803, DLDO1, "dldo1", "dldoin", 700, 3300, 100,
296                  AXP22X_DLDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(3)),
297         AXP_DESC_RANGES(AXP803, DLDO2, "dldo2", "dldoin", axp803_dldo2_ranges,
298                         32, AXP22X_DLDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2,
299                         BIT(4)),
300         AXP_DESC(AXP803, DLDO3, "dldo3", "dldoin", 700, 3300, 100,
301                  AXP22X_DLDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(5)),
302         AXP_DESC(AXP803, DLDO4, "dldo4", "dldoin", 700, 3300, 100,
303                  AXP22X_DLDO4_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(6)),
304         AXP_DESC(AXP803, ELDO1, "eldo1", "eldoin", 700, 1900, 50,
305                  AXP22X_ELDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(0)),
306         AXP_DESC(AXP803, ELDO2, "eldo2", "eldoin", 700, 1900, 50,
307                  AXP22X_ELDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(1)),
308         AXP_DESC(AXP803, ELDO3, "eldo3", "eldoin", 700, 1900, 50,
309                  AXP22X_ELDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(2)),
310         AXP_DESC(AXP803, FLDO1, "fldo1", "fldoin", 700, 1450, 50,
311                  AXP803_FLDO1_V_OUT, 0x0f, AXP22X_PWR_OUT_CTRL3, BIT(2)),
312         AXP_DESC(AXP803, FLDO2, "fldo2", "fldoin", 700, 1450, 50,
313                  AXP803_FLDO2_V_OUT, 0x0f, AXP22X_PWR_OUT_CTRL3, BIT(3)),
314         AXP_DESC_IO(AXP803, LDO_IO0, "ldo-io0", "ips", 700, 3300, 100,
315                     AXP22X_LDO_IO0_V_OUT, 0x1f, AXP20X_GPIO0_CTRL, 0x07,
316                     AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
317         AXP_DESC_IO(AXP803, LDO_IO1, "ldo-io1", "ips", 700, 3300, 100,
318                     AXP22X_LDO_IO1_V_OUT, 0x1f, AXP20X_GPIO1_CTRL, 0x07,
319                     AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
320         AXP_DESC_FIXED(AXP803, RTC_LDO, "rtc-ldo", "ips", 3000),
321 };
322
323 static const struct regulator_linear_range axp806_dcdca_ranges[] = {
324         REGULATOR_LINEAR_RANGE(600000, 0x0, 0x32, 10000),
325         REGULATOR_LINEAR_RANGE(1120000, 0x33, 0x47, 20000),
326 };
327
328 static const struct regulator_linear_range axp806_dcdcd_ranges[] = {
329         REGULATOR_LINEAR_RANGE(600000, 0x0, 0x2d, 20000),
330         REGULATOR_LINEAR_RANGE(1600000, 0x2e, 0x3f, 100000),
331 };
332
333 static const struct regulator_desc axp806_regulators[] = {
334         AXP_DESC_RANGES(AXP806, DCDCA, "dcdca", "vina", axp806_dcdca_ranges,
335                         72, AXP806_DCDCA_V_CTRL, 0x7f, AXP806_PWR_OUT_CTRL1,
336                         BIT(0)),
337         AXP_DESC(AXP806, DCDCB, "dcdcb", "vinb", 1000, 2550, 50,
338                  AXP806_DCDCB_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL1, BIT(1)),
339         AXP_DESC_RANGES(AXP806, DCDCC, "dcdcc", "vinc", axp806_dcdca_ranges,
340                         72, AXP806_DCDCC_V_CTRL, 0x7f, AXP806_PWR_OUT_CTRL1,
341                         BIT(2)),
342         AXP_DESC_RANGES(AXP806, DCDCD, "dcdcd", "vind", axp806_dcdcd_ranges,
343                         64, AXP806_DCDCD_V_CTRL, 0x3f, AXP806_PWR_OUT_CTRL1,
344                         BIT(3)),
345         AXP_DESC(AXP806, DCDCE, "dcdce", "vine", 1100, 3400, 100,
346                  AXP806_DCDCE_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL1, BIT(4)),
347         AXP_DESC(AXP806, ALDO1, "aldo1", "aldoin", 700, 3300, 100,
348                  AXP806_ALDO1_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL1, BIT(5)),
349         AXP_DESC(AXP806, ALDO2, "aldo2", "aldoin", 700, 3400, 100,
350                  AXP806_ALDO2_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL1, BIT(6)),
351         AXP_DESC(AXP806, ALDO3, "aldo3", "aldoin", 700, 3300, 100,
352                  AXP806_ALDO3_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL1, BIT(7)),
353         AXP_DESC(AXP806, BLDO1, "bldo1", "bldoin", 700, 1900, 100,
354                  AXP806_BLDO1_V_CTRL, 0x0f, AXP806_PWR_OUT_CTRL2, BIT(0)),
355         AXP_DESC(AXP806, BLDO2, "bldo2", "bldoin", 700, 1900, 100,
356                  AXP806_BLDO2_V_CTRL, 0x0f, AXP806_PWR_OUT_CTRL2, BIT(1)),
357         AXP_DESC(AXP806, BLDO3, "bldo3", "bldoin", 700, 1900, 100,
358                  AXP806_BLDO3_V_CTRL, 0x0f, AXP806_PWR_OUT_CTRL2, BIT(2)),
359         AXP_DESC(AXP806, BLDO4, "bldo4", "bldoin", 700, 1900, 100,
360                  AXP806_BLDO4_V_CTRL, 0x0f, AXP806_PWR_OUT_CTRL2, BIT(3)),
361         AXP_DESC(AXP806, CLDO1, "cldo1", "cldoin", 700, 3300, 100,
362                  AXP806_CLDO1_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL2, BIT(4)),
363         AXP_DESC_RANGES(AXP806, CLDO2, "cldo2", "cldoin", axp803_dldo2_ranges,
364                         32, AXP806_CLDO2_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL2,
365                         BIT(5)),
366         AXP_DESC(AXP806, CLDO3, "cldo3", "cldoin", 700, 3300, 100,
367                  AXP806_CLDO3_V_CTRL, 0x1f, AXP806_PWR_OUT_CTRL2, BIT(6)),
368         AXP_DESC_SW(AXP806, SW, "sw", "swin", AXP806_PWR_OUT_CTRL2, BIT(7)),
369 };
370
371 static const struct regulator_linear_range axp809_dcdc4_ranges[] = {
372         REGULATOR_LINEAR_RANGE(600000, 0x0, 0x2f, 20000),
373         REGULATOR_LINEAR_RANGE(1800000, 0x30, 0x38, 100000),
374 };
375
376 static const struct regulator_desc axp809_regulators[] = {
377         AXP_DESC(AXP809, DCDC1, "dcdc1", "vin1", 1600, 3400, 100,
378                  AXP22X_DCDC1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(1)),
379         AXP_DESC(AXP809, DCDC2, "dcdc2", "vin2", 600, 1540, 20,
380                  AXP22X_DCDC2_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(2)),
381         AXP_DESC(AXP809, DCDC3, "dcdc3", "vin3", 600, 1860, 20,
382                  AXP22X_DCDC3_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(3)),
383         AXP_DESC_RANGES(AXP809, DCDC4, "dcdc4", "vin4", axp809_dcdc4_ranges,
384                         57, AXP22X_DCDC4_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1,
385                         BIT(4)),
386         AXP_DESC(AXP809, DCDC5, "dcdc5", "vin5", 1000, 2550, 50,
387                  AXP22X_DCDC5_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(5)),
388         /* secondary switchable output of DCDC1 */
389         AXP_DESC_SW(AXP809, DC1SW, "dc1sw", NULL, AXP22X_PWR_OUT_CTRL2,
390                     BIT(7)),
391         /* LDO regulator internally chained to DCDC5 */
392         AXP_DESC(AXP809, DC5LDO, "dc5ldo", NULL, 700, 1400, 100,
393                  AXP22X_DC5LDO_V_OUT, 0x7, AXP22X_PWR_OUT_CTRL1, BIT(0)),
394         AXP_DESC(AXP809, ALDO1, "aldo1", "aldoin", 700, 3300, 100,
395                  AXP22X_ALDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(6)),
396         AXP_DESC(AXP809, ALDO2, "aldo2", "aldoin", 700, 3300, 100,
397                  AXP22X_ALDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(7)),
398         AXP_DESC(AXP809, ALDO3, "aldo3", "aldoin", 700, 3300, 100,
399                  AXP22X_ALDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(5)),
400         AXP_DESC_RANGES(AXP809, DLDO1, "dldo1", "dldoin", axp803_dldo2_ranges,
401                         32, AXP22X_DLDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2,
402                         BIT(3)),
403         AXP_DESC(AXP809, DLDO2, "dldo2", "dldoin", 700, 3300, 100,
404                  AXP22X_DLDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(4)),
405         AXP_DESC(AXP809, ELDO1, "eldo1", "eldoin", 700, 3300, 100,
406                  AXP22X_ELDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(0)),
407         AXP_DESC(AXP809, ELDO2, "eldo2", "eldoin", 700, 3300, 100,
408                  AXP22X_ELDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(1)),
409         AXP_DESC(AXP809, ELDO3, "eldo3", "eldoin", 700, 3300, 100,
410                  AXP22X_ELDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(2)),
411         /*
412          * Note the datasheet only guarantees reliable operation up to
413          * 3.3V, this needs to be enforced via dts provided constraints
414          */
415         AXP_DESC_IO(AXP809, LDO_IO0, "ldo_io0", "ips", 700, 3800, 100,
416                     AXP22X_LDO_IO0_V_OUT, 0x1f, AXP20X_GPIO0_CTRL, 0x07,
417                     AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
418         /*
419          * Note the datasheet only guarantees reliable operation up to
420          * 3.3V, this needs to be enforced via dts provided constraints
421          */
422         AXP_DESC_IO(AXP809, LDO_IO1, "ldo_io1", "ips", 700, 3800, 100,
423                     AXP22X_LDO_IO1_V_OUT, 0x1f, AXP20X_GPIO1_CTRL, 0x07,
424                     AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
425         AXP_DESC_FIXED(AXP809, RTC_LDO, "rtc_ldo", "ips", 1800),
426         AXP_DESC_SW(AXP809, SW, "sw", "swin", AXP22X_PWR_OUT_CTRL2, BIT(6)),
427 };
428
429 static int axp20x_set_dcdc_freq(struct platform_device *pdev, u32 dcdcfreq)
430 {
431         struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
432         unsigned int reg = AXP20X_DCDC_FREQ;
433         u32 min, max, def, step;
434
435         switch (axp20x->variant) {
436         case AXP202_ID:
437         case AXP209_ID:
438                 min = 750;
439                 max = 1875;
440                 def = 1500;
441                 step = 75;
442                 break;
443         case AXP803_ID:
444                 /*
445                  * AXP803 DCDC work frequency setting has the same range and
446                  * step as AXP22X, but at a different register.
447                  * Fall through to the check below.
448                  * (See include/linux/mfd/axp20x.h)
449                  */
450                 reg = AXP803_DCDC_FREQ_CTRL;
451         case AXP806_ID:
452                 /*
453                  * AXP806 also have DCDC work frequency setting register at a
454                  * different position.
455                  */
456                 if (axp20x->variant == AXP806_ID)
457                         reg = AXP806_DCDC_FREQ_CTRL;
458         case AXP221_ID:
459         case AXP223_ID:
460         case AXP809_ID:
461                 min = 1800;
462                 max = 4050;
463                 def = 3000;
464                 step = 150;
465                 break;
466         default:
467                 dev_err(&pdev->dev,
468                         "Setting DCDC frequency for unsupported AXP variant\n");
469                 return -EINVAL;
470         }
471
472         if (dcdcfreq == 0)
473                 dcdcfreq = def;
474
475         if (dcdcfreq < min) {
476                 dcdcfreq = min;
477                 dev_warn(&pdev->dev, "DCDC frequency too low. Set to %ukHz\n",
478                          min);
479         }
480
481         if (dcdcfreq > max) {
482                 dcdcfreq = max;
483                 dev_warn(&pdev->dev, "DCDC frequency too high. Set to %ukHz\n",
484                          max);
485         }
486
487         dcdcfreq = (dcdcfreq - min) / step;
488
489         return regmap_update_bits(axp20x->regmap, reg,
490                                   AXP20X_FREQ_DCDC_MASK, dcdcfreq);
491 }
492
493 static int axp20x_regulator_parse_dt(struct platform_device *pdev)
494 {
495         struct device_node *np, *regulators;
496         int ret;
497         u32 dcdcfreq = 0;
498
499         np = of_node_get(pdev->dev.parent->of_node);
500         if (!np)
501                 return 0;
502
503         regulators = of_get_child_by_name(np, "regulators");
504         if (!regulators) {
505                 dev_warn(&pdev->dev, "regulators node not found\n");
506         } else {
507                 of_property_read_u32(regulators, "x-powers,dcdc-freq", &dcdcfreq);
508                 ret = axp20x_set_dcdc_freq(pdev, dcdcfreq);
509                 if (ret < 0) {
510                         dev_err(&pdev->dev, "Error setting dcdc frequency: %d\n", ret);
511                         return ret;
512                 }
513
514                 of_node_put(regulators);
515         }
516
517         return 0;
518 }
519
520 static int axp20x_set_dcdc_workmode(struct regulator_dev *rdev, int id, u32 workmode)
521 {
522         struct axp20x_dev *axp20x = rdev_get_drvdata(rdev);
523         unsigned int reg = AXP20X_DCDC_MODE;
524         unsigned int mask;
525
526         switch (axp20x->variant) {
527         case AXP202_ID:
528         case AXP209_ID:
529                 if ((id != AXP20X_DCDC2) && (id != AXP20X_DCDC3))
530                         return -EINVAL;
531
532                 mask = AXP20X_WORKMODE_DCDC2_MASK;
533                 if (id == AXP20X_DCDC3)
534                         mask = AXP20X_WORKMODE_DCDC3_MASK;
535
536                 workmode <<= ffs(mask) - 1;
537                 break;
538
539         case AXP806_ID:
540                 reg = AXP806_DCDC_MODE_CTRL2;
541                 /*
542                  * AXP806 DCDC regulator IDs have the same range as AXP22X.
543                  * Fall through to the check below.
544                  * (See include/linux/mfd/axp20x.h)
545                  */
546         case AXP221_ID:
547         case AXP223_ID:
548         case AXP809_ID:
549                 if (id < AXP22X_DCDC1 || id > AXP22X_DCDC5)
550                         return -EINVAL;
551
552                 mask = AXP22X_WORKMODE_DCDCX_MASK(id - AXP22X_DCDC1);
553                 workmode <<= id - AXP22X_DCDC1;
554                 break;
555
556         case AXP803_ID:
557                 if (id < AXP803_DCDC1 || id > AXP803_DCDC6)
558                         return -EINVAL;
559
560                 mask = AXP22X_WORKMODE_DCDCX_MASK(id - AXP803_DCDC1);
561                 workmode <<= id - AXP803_DCDC1;
562                 break;
563
564         default:
565                 /* should not happen */
566                 WARN_ON(1);
567                 return -EINVAL;
568         }
569
570         return regmap_update_bits(rdev->regmap, reg, mask, workmode);
571 }
572
573 /*
574  * This function checks whether a regulator is part of a poly-phase
575  * output setup based on the registers settings. Returns true if it is.
576  */
577 static bool axp20x_is_polyphase_slave(struct axp20x_dev *axp20x, int id)
578 {
579         u32 reg = 0;
580
581         /*
582          * Currently in our supported AXP variants, only AXP803 and AXP806
583          * have polyphase regulators.
584          */
585         switch (axp20x->variant) {
586         case AXP803_ID:
587                 regmap_read(axp20x->regmap, AXP803_POLYPHASE_CTRL, &reg);
588
589                 switch (id) {
590                 case AXP803_DCDC3:
591                         return !!(reg & BIT(6));
592                 case AXP803_DCDC6:
593                         return !!(reg & BIT(5));
594                 }
595                 break;
596
597         case AXP806_ID:
598                 regmap_read(axp20x->regmap, AXP806_DCDC_MODE_CTRL2, &reg);
599
600                 switch (id) {
601                 case AXP806_DCDCB:
602                         return (((reg & GENMASK(7, 6)) == BIT(6)) ||
603                                 ((reg & GENMASK(7, 6)) == BIT(7)));
604                 case AXP806_DCDCC:
605                         return ((reg & GENMASK(7, 6)) == BIT(7));
606                 case AXP806_DCDCE:
607                         return !!(reg & BIT(5));
608                 }
609                 break;
610
611         default:
612                 return false;
613         }
614
615         return false;
616 }
617
618 static int axp20x_regulator_probe(struct platform_device *pdev)
619 {
620         struct regulator_dev *rdev;
621         struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
622         const struct regulator_desc *regulators;
623         struct regulator_config config = {
624                 .dev = pdev->dev.parent,
625                 .regmap = axp20x->regmap,
626                 .driver_data = axp20x,
627         };
628         int ret, i, nregulators;
629         u32 workmode;
630         const char *dcdc1_name = axp22x_regulators[AXP22X_DCDC1].name;
631         const char *dcdc5_name = axp22x_regulators[AXP22X_DCDC5].name;
632         bool drivevbus = false;
633
634         switch (axp20x->variant) {
635         case AXP202_ID:
636         case AXP209_ID:
637                 regulators = axp20x_regulators;
638                 nregulators = AXP20X_REG_ID_MAX;
639                 break;
640         case AXP221_ID:
641         case AXP223_ID:
642                 regulators = axp22x_regulators;
643                 nregulators = AXP22X_REG_ID_MAX;
644                 drivevbus = of_property_read_bool(pdev->dev.parent->of_node,
645                                                   "x-powers,drive-vbus-en");
646                 break;
647         case AXP803_ID:
648                 regulators = axp803_regulators;
649                 nregulators = AXP803_REG_ID_MAX;
650                 break;
651         case AXP806_ID:
652                 regulators = axp806_regulators;
653                 nregulators = AXP806_REG_ID_MAX;
654                 break;
655         case AXP809_ID:
656                 regulators = axp809_regulators;
657                 nregulators = AXP809_REG_ID_MAX;
658                 break;
659         default:
660                 dev_err(&pdev->dev, "Unsupported AXP variant: %ld\n",
661                         axp20x->variant);
662                 return -EINVAL;
663         }
664
665         /* This only sets the dcdc freq. Ignore any errors */
666         axp20x_regulator_parse_dt(pdev);
667
668         for (i = 0; i < nregulators; i++) {
669                 const struct regulator_desc *desc = &regulators[i];
670                 struct regulator_desc *new_desc;
671
672                 /*
673                  * If this regulator is a slave in a poly-phase setup,
674                  * skip it, as its controls are bound to the master
675                  * regulator and won't work.
676                  */
677                 if (axp20x_is_polyphase_slave(axp20x, i))
678                         continue;
679
680                 /*
681                  * Regulators DC1SW and DC5LDO are connected internally,
682                  * so we have to handle their supply names separately.
683                  *
684                  * We always register the regulators in proper sequence,
685                  * so the supply names are correctly read. See the last
686                  * part of this loop to see where we save the DT defined
687                  * name.
688                  */
689                 if ((regulators == axp22x_regulators && i == AXP22X_DC1SW) ||
690                     (regulators == axp803_regulators && i == AXP803_DC1SW) ||
691                     (regulators == axp809_regulators && i == AXP809_DC1SW)) {
692                         new_desc = devm_kzalloc(&pdev->dev, sizeof(*desc),
693                                                 GFP_KERNEL);
694                         if (!new_desc)
695                                 return -ENOMEM;
696
697                         *new_desc = regulators[i];
698                         new_desc->supply_name = dcdc1_name;
699                         desc = new_desc;
700                 }
701
702                 if ((regulators == axp22x_regulators && i == AXP22X_DC5LDO) ||
703                     (regulators == axp809_regulators && i == AXP809_DC5LDO)) {
704                         new_desc = devm_kzalloc(&pdev->dev, sizeof(*desc),
705                                                 GFP_KERNEL);
706                         if (!new_desc)
707                                 return -ENOMEM;
708
709                         *new_desc = regulators[i];
710                         new_desc->supply_name = dcdc5_name;
711                         desc = new_desc;
712                 }
713
714                 rdev = devm_regulator_register(&pdev->dev, desc, &config);
715                 if (IS_ERR(rdev)) {
716                         dev_err(&pdev->dev, "Failed to register %s\n",
717                                 regulators[i].name);
718
719                         return PTR_ERR(rdev);
720                 }
721
722                 ret = of_property_read_u32(rdev->dev.of_node,
723                                            "x-powers,dcdc-workmode",
724                                            &workmode);
725                 if (!ret) {
726                         if (axp20x_set_dcdc_workmode(rdev, i, workmode))
727                                 dev_err(&pdev->dev, "Failed to set workmode on %s\n",
728                                         rdev->desc->name);
729                 }
730
731                 /*
732                  * Save AXP22X DCDC1 / DCDC5 regulator names for later.
733                  */
734                 if ((regulators == axp22x_regulators && i == AXP22X_DCDC1) ||
735                     (regulators == axp809_regulators && i == AXP809_DCDC1))
736                         of_property_read_string(rdev->dev.of_node,
737                                                 "regulator-name",
738                                                 &dcdc1_name);
739
740                 if ((regulators == axp22x_regulators && i == AXP22X_DCDC5) ||
741                     (regulators == axp809_regulators && i == AXP809_DCDC5))
742                         of_property_read_string(rdev->dev.of_node,
743                                                 "regulator-name",
744                                                 &dcdc5_name);
745         }
746
747         if (drivevbus) {
748                 /* Change N_VBUSEN sense pin to DRIVEVBUS output pin */
749                 regmap_update_bits(axp20x->regmap, AXP20X_OVER_TMP,
750                                    AXP22X_MISC_N_VBUSEN_FUNC, 0);
751                 rdev = devm_regulator_register(&pdev->dev,
752                                                &axp22x_drivevbus_regulator,
753                                                &config);
754                 if (IS_ERR(rdev)) {
755                         dev_err(&pdev->dev, "Failed to register drivevbus\n");
756                         return PTR_ERR(rdev);
757                 }
758         }
759
760         return 0;
761 }
762
763 static struct platform_driver axp20x_regulator_driver = {
764         .probe  = axp20x_regulator_probe,
765         .driver = {
766                 .name           = "axp20x-regulator",
767         },
768 };
769
770 module_platform_driver(axp20x_regulator_driver);
771
772 MODULE_LICENSE("GPL v2");
773 MODULE_AUTHOR("Carlo Caione <carlo@caione.org>");
774 MODULE_DESCRIPTION("Regulator Driver for AXP20X PMIC");
775 MODULE_ALIAS("platform:axp20x-regulator");