2 * AXP20x regulators driver.
4 * Copyright (C) 2013 Carlo Caione <carlo@caione.org>
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.
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.
16 #include <linux/err.h>
17 #include <linux/init.h>
18 #include <linux/module.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>
27 #define AXP20X_IO_ENABLED 0x03
28 #define AXP20X_IO_DISABLED 0x07
30 #define AXP22X_IO_ENABLED 0x03
31 #define AXP22X_IO_DISABLED 0x04
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)
37 #define AXP20X_FREQ_DCDC_MASK 0x0f
39 #define AXP22X_MISC_N_VBUSEN_FUNC BIT(4)
41 #define AXP_DESC_IO(_family, _id, _match, _supply, _min, _max, _step, _vreg, \
42 _vmask, _ereg, _emask, _enable_val, _disable_val) \
43 [_family##_##_id] = { \
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), \
63 #define AXP_DESC(_family, _id, _match, _supply, _min, _max, _step, _vreg, \
64 _vmask, _ereg, _emask) \
65 [_family##_##_id] = { \
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), \
83 #define AXP_DESC_SW(_family, _id, _match, _supply, _ereg, _emask) \
84 [_family##_##_id] = { \
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, \
97 #define AXP_DESC_FIXED(_family, _id, _match, _supply, _volt) \
98 [_family##_##_id] = { \
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, \
106 .owner = THIS_MODULE, \
107 .min_uV = (_volt) * 1000, \
108 .ops = &axp20x_ops_fixed \
111 #define AXP_DESC_RANGES(_family, _id, _match, _supply, _ranges, _n_voltages, \
112 _vreg, _vmask, _ereg, _emask) \
113 [_family##_##_id] = { \
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, \
131 static struct regulator_ops axp20x_ops_fixed
= {
132 .list_voltage
= regulator_list_voltage_linear
,
135 static 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
,
144 static 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
,
153 static struct regulator_ops axp20x_ops_sw
= {
154 .enable
= regulator_enable_regmap
,
155 .disable
= regulator_disable_regmap
,
156 .is_enabled
= regulator_is_enabled_regmap
,
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),
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
,
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
),
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
,
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),
235 static const struct regulator_desc axp22x_drivevbus_regulator
= {
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
,
247 static const struct regulator_linear_range axp806_dcdca_ranges
[] = {
248 REGULATOR_LINEAR_RANGE(600000, 0x0, 0x32, 10000),
249 REGULATOR_LINEAR_RANGE(1120000, 0x33, 0x47, 20000),
252 static const struct regulator_linear_range axp806_dcdcd_ranges
[] = {
253 REGULATOR_LINEAR_RANGE(600000, 0x0, 0x2d, 20000),
254 REGULATOR_LINEAR_RANGE(1600000, 0x2e, 0x3f, 100000),
257 static const struct regulator_linear_range axp806_cldo2_ranges
[] = {
258 REGULATOR_LINEAR_RANGE(700000, 0x0, 0x1a, 100000),
259 REGULATOR_LINEAR_RANGE(3400000, 0x1b, 0x1f, 200000),
262 static const struct regulator_desc axp806_regulators
[] = {
263 AXP_DESC_RANGES(AXP806
, DCDCA
, "dcdca", "vina", axp806_dcdca_ranges
,
264 72, AXP806_DCDCA_V_CTRL
, 0x7f, AXP806_PWR_OUT_CTRL1
,
266 AXP_DESC(AXP806
, DCDCB
, "dcdcb", "vinb", 1000, 2550, 50,
267 AXP806_DCDCB_V_CTRL
, 0x1f, AXP806_PWR_OUT_CTRL1
, BIT(1)),
268 AXP_DESC_RANGES(AXP806
, DCDCC
, "dcdcc", "vinc", axp806_dcdca_ranges
,
269 72, AXP806_DCDCC_V_CTRL
, 0x7f, AXP806_PWR_OUT_CTRL1
,
271 AXP_DESC_RANGES(AXP806
, DCDCD
, "dcdcd", "vind", axp806_dcdcd_ranges
,
272 64, AXP806_DCDCD_V_CTRL
, 0x3f, AXP806_PWR_OUT_CTRL1
,
274 AXP_DESC(AXP806
, DCDCE
, "dcdce", "vine", 1100, 3400, 100,
275 AXP806_DCDCB_V_CTRL
, 0x1f, AXP806_PWR_OUT_CTRL1
, BIT(4)),
276 AXP_DESC(AXP806
, ALDO1
, "aldo1", "aldoin", 700, 3300, 100,
277 AXP806_ALDO1_V_CTRL
, 0x1f, AXP806_PWR_OUT_CTRL1
, BIT(5)),
278 AXP_DESC(AXP806
, ALDO2
, "aldo2", "aldoin", 700, 3400, 100,
279 AXP806_ALDO2_V_CTRL
, 0x1f, AXP806_PWR_OUT_CTRL1
, BIT(6)),
280 AXP_DESC(AXP806
, ALDO3
, "aldo3", "aldoin", 700, 3300, 100,
281 AXP806_ALDO3_V_CTRL
, 0x1f, AXP806_PWR_OUT_CTRL1
, BIT(7)),
282 AXP_DESC(AXP806
, BLDO1
, "bldo1", "bldoin", 700, 1900, 100,
283 AXP806_BLDO1_V_CTRL
, 0x0f, AXP806_PWR_OUT_CTRL2
, BIT(0)),
284 AXP_DESC(AXP806
, BLDO2
, "bldo2", "bldoin", 700, 1900, 100,
285 AXP806_BLDO2_V_CTRL
, 0x0f, AXP806_PWR_OUT_CTRL2
, BIT(1)),
286 AXP_DESC(AXP806
, BLDO3
, "bldo3", "bldoin", 700, 1900, 100,
287 AXP806_BLDO3_V_CTRL
, 0x0f, AXP806_PWR_OUT_CTRL2
, BIT(2)),
288 AXP_DESC(AXP806
, BLDO4
, "bldo4", "bldoin", 700, 1900, 100,
289 AXP806_BLDO4_V_CTRL
, 0x0f, AXP806_PWR_OUT_CTRL2
, BIT(3)),
290 AXP_DESC(AXP806
, CLDO1
, "cldo1", "cldoin", 700, 3300, 100,
291 AXP806_CLDO1_V_CTRL
, 0x1f, AXP806_PWR_OUT_CTRL2
, BIT(4)),
292 AXP_DESC_RANGES(AXP806
, CLDO2
, "cldo2", "cldoin", axp806_cldo2_ranges
,
293 32, AXP806_CLDO2_V_CTRL
, 0x1f, AXP806_PWR_OUT_CTRL2
,
295 AXP_DESC(AXP806
, CLDO3
, "cldo3", "cldoin", 700, 3300, 100,
296 AXP806_CLDO3_V_CTRL
, 0x1f, AXP806_PWR_OUT_CTRL2
, BIT(6)),
297 AXP_DESC_SW(AXP806
, SW
, "sw", "swin", AXP806_PWR_OUT_CTRL2
, BIT(7)),
300 static const struct regulator_linear_range axp809_dcdc4_ranges
[] = {
301 REGULATOR_LINEAR_RANGE(600000, 0x0, 0x2f, 20000),
302 REGULATOR_LINEAR_RANGE(1800000, 0x30, 0x38, 100000),
305 static const struct regulator_desc axp809_regulators
[] = {
306 AXP_DESC(AXP809
, DCDC1
, "dcdc1", "vin1", 1600, 3400, 100,
307 AXP22X_DCDC1_V_OUT
, 0x1f, AXP22X_PWR_OUT_CTRL1
, BIT(1)),
308 AXP_DESC(AXP809
, DCDC2
, "dcdc2", "vin2", 600, 1540, 20,
309 AXP22X_DCDC2_V_OUT
, 0x3f, AXP22X_PWR_OUT_CTRL1
, BIT(2)),
310 AXP_DESC(AXP809
, DCDC3
, "dcdc3", "vin3", 600, 1860, 20,
311 AXP22X_DCDC3_V_OUT
, 0x3f, AXP22X_PWR_OUT_CTRL1
, BIT(3)),
312 AXP_DESC_RANGES(AXP809
, DCDC4
, "dcdc4", "vin4", axp809_dcdc4_ranges
,
313 57, AXP22X_DCDC4_V_OUT
, 0x3f, AXP22X_PWR_OUT_CTRL1
,
315 AXP_DESC(AXP809
, DCDC5
, "dcdc5", "vin5", 1000, 2550, 50,
316 AXP22X_DCDC5_V_OUT
, 0x1f, AXP22X_PWR_OUT_CTRL1
, BIT(5)),
317 /* secondary switchable output of DCDC1 */
318 AXP_DESC_SW(AXP809
, DC1SW
, "dc1sw", NULL
, AXP22X_PWR_OUT_CTRL2
,
320 /* LDO regulator internally chained to DCDC5 */
321 AXP_DESC(AXP809
, DC5LDO
, "dc5ldo", NULL
, 700, 1400, 100,
322 AXP22X_DC5LDO_V_OUT
, 0x7, AXP22X_PWR_OUT_CTRL1
, BIT(0)),
323 AXP_DESC(AXP809
, ALDO1
, "aldo1", "aldoin", 700, 3300, 100,
324 AXP22X_ALDO1_V_OUT
, 0x1f, AXP22X_PWR_OUT_CTRL1
, BIT(6)),
325 AXP_DESC(AXP809
, ALDO2
, "aldo2", "aldoin", 700, 3300, 100,
326 AXP22X_ALDO2_V_OUT
, 0x1f, AXP22X_PWR_OUT_CTRL1
, BIT(7)),
327 AXP_DESC(AXP809
, ALDO3
, "aldo3", "aldoin", 700, 3300, 100,
328 AXP22X_ALDO3_V_OUT
, 0x1f, AXP22X_PWR_OUT_CTRL2
, BIT(5)),
329 AXP_DESC_RANGES(AXP809
, DLDO1
, "dldo1", "dldoin", axp806_cldo2_ranges
,
330 32, AXP22X_DLDO1_V_OUT
, 0x1f, AXP22X_PWR_OUT_CTRL2
,
332 AXP_DESC(AXP809
, DLDO2
, "dldo2", "dldoin", 700, 3300, 100,
333 AXP22X_DLDO2_V_OUT
, 0x1f, AXP22X_PWR_OUT_CTRL2
, BIT(4)),
334 AXP_DESC(AXP809
, ELDO1
, "eldo1", "eldoin", 700, 3300, 100,
335 AXP22X_ELDO1_V_OUT
, 0x1f, AXP22X_PWR_OUT_CTRL2
, BIT(0)),
336 AXP_DESC(AXP809
, ELDO2
, "eldo2", "eldoin", 700, 3300, 100,
337 AXP22X_ELDO2_V_OUT
, 0x1f, AXP22X_PWR_OUT_CTRL2
, BIT(1)),
338 AXP_DESC(AXP809
, ELDO3
, "eldo3", "eldoin", 700, 3300, 100,
339 AXP22X_ELDO3_V_OUT
, 0x1f, AXP22X_PWR_OUT_CTRL2
, BIT(2)),
340 AXP_DESC_IO(AXP809
, LDO_IO0
, "ldo_io0", "ips", 700, 3300, 100,
341 AXP22X_LDO_IO0_V_OUT
, 0x1f, AXP20X_GPIO0_CTRL
, 0x07,
342 AXP22X_IO_ENABLED
, AXP22X_IO_DISABLED
),
343 AXP_DESC_IO(AXP809
, LDO_IO1
, "ldo_io1", "ips", 700, 3300, 100,
344 AXP22X_LDO_IO1_V_OUT
, 0x1f, AXP20X_GPIO1_CTRL
, 0x07,
345 AXP22X_IO_ENABLED
, AXP22X_IO_DISABLED
),
346 AXP_DESC_FIXED(AXP809
, RTC_LDO
, "rtc_ldo", "ips", 1800),
347 AXP_DESC_SW(AXP809
, SW
, "sw", "swin", AXP22X_PWR_OUT_CTRL2
, BIT(6)),
350 static int axp20x_set_dcdc_freq(struct platform_device
*pdev
, u32 dcdcfreq
)
352 struct axp20x_dev
*axp20x
= dev_get_drvdata(pdev
->dev
.parent
);
353 unsigned int reg
= AXP20X_DCDC_FREQ
;
354 u32 min
, max
, def
, step
;
356 switch (axp20x
->variant
) {
366 * AXP806 DCDC work frequency setting has the same range and
367 * step as AXP22X, but at a different register.
368 * Fall through to the check below.
369 * (See include/linux/mfd/axp20x.h)
371 reg
= AXP806_DCDC_FREQ_CTRL
;
382 "Setting DCDC frequency for unsupported AXP variant\n");
389 if (dcdcfreq
< min
) {
391 dev_warn(&pdev
->dev
, "DCDC frequency too low. Set to %ukHz\n",
395 if (dcdcfreq
> max
) {
397 dev_warn(&pdev
->dev
, "DCDC frequency too high. Set to %ukHz\n",
401 dcdcfreq
= (dcdcfreq
- min
) / step
;
403 return regmap_update_bits(axp20x
->regmap
, reg
,
404 AXP20X_FREQ_DCDC_MASK
, dcdcfreq
);
407 static int axp20x_regulator_parse_dt(struct platform_device
*pdev
)
409 struct device_node
*np
, *regulators
;
413 np
= of_node_get(pdev
->dev
.parent
->of_node
);
417 regulators
= of_get_child_by_name(np
, "regulators");
419 dev_warn(&pdev
->dev
, "regulators node not found\n");
421 of_property_read_u32(regulators
, "x-powers,dcdc-freq", &dcdcfreq
);
422 ret
= axp20x_set_dcdc_freq(pdev
, dcdcfreq
);
424 dev_err(&pdev
->dev
, "Error setting dcdc frequency: %d\n", ret
);
428 of_node_put(regulators
);
434 static int axp20x_set_dcdc_workmode(struct regulator_dev
*rdev
, int id
, u32 workmode
)
436 struct axp20x_dev
*axp20x
= rdev_get_drvdata(rdev
);
437 unsigned int reg
= AXP20X_DCDC_MODE
;
440 switch (axp20x
->variant
) {
443 if ((id
!= AXP20X_DCDC2
) && (id
!= AXP20X_DCDC3
))
446 mask
= AXP20X_WORKMODE_DCDC2_MASK
;
447 if (id
== AXP20X_DCDC3
)
448 mask
= AXP20X_WORKMODE_DCDC3_MASK
;
450 workmode
<<= ffs(mask
) - 1;
454 reg
= AXP806_DCDC_MODE_CTRL2
;
456 * AXP806 DCDC regulator IDs have the same range as AXP22X.
457 * Fall through to the check below.
458 * (See include/linux/mfd/axp20x.h)
463 if (id
< AXP22X_DCDC1
|| id
> AXP22X_DCDC5
)
466 mask
= AXP22X_WORKMODE_DCDCX_MASK(id
- AXP22X_DCDC1
);
467 workmode
<<= id
- AXP22X_DCDC1
;
471 /* should not happen */
476 return regmap_update_bits(rdev
->regmap
, reg
, mask
, workmode
);
480 * This function checks whether a regulator is part of a poly-phase
481 * output setup based on the registers settings. Returns true if it is.
483 static bool axp20x_is_polyphase_slave(struct axp20x_dev
*axp20x
, int id
)
487 /* Only AXP806 has poly-phase outputs */
488 if (axp20x
->variant
!= AXP806_ID
)
491 regmap_read(axp20x
->regmap
, AXP806_DCDC_MODE_CTRL2
, ®
);
495 return (((reg
& GENMASK(7, 6)) == BIT(6)) ||
496 ((reg
& GENMASK(7, 6)) == BIT(7)));
498 return ((reg
& GENMASK(7, 6)) == BIT(7));
500 return !!(reg
& BIT(5));
506 static int axp20x_regulator_probe(struct platform_device
*pdev
)
508 struct regulator_dev
*rdev
;
509 struct axp20x_dev
*axp20x
= dev_get_drvdata(pdev
->dev
.parent
);
510 const struct regulator_desc
*regulators
;
511 struct regulator_config config
= {
512 .dev
= pdev
->dev
.parent
,
513 .regmap
= axp20x
->regmap
,
514 .driver_data
= axp20x
,
516 int ret
, i
, nregulators
;
518 const char *dcdc1_name
= axp22x_regulators
[AXP22X_DCDC1
].name
;
519 const char *dcdc5_name
= axp22x_regulators
[AXP22X_DCDC5
].name
;
520 bool drivevbus
= false;
522 switch (axp20x
->variant
) {
525 regulators
= axp20x_regulators
;
526 nregulators
= AXP20X_REG_ID_MAX
;
530 regulators
= axp22x_regulators
;
531 nregulators
= AXP22X_REG_ID_MAX
;
532 drivevbus
= of_property_read_bool(pdev
->dev
.parent
->of_node
,
533 "x-powers,drive-vbus-en");
536 regulators
= axp806_regulators
;
537 nregulators
= AXP806_REG_ID_MAX
;
540 regulators
= axp809_regulators
;
541 nregulators
= AXP809_REG_ID_MAX
;
544 dev_err(&pdev
->dev
, "Unsupported AXP variant: %ld\n",
549 /* This only sets the dcdc freq. Ignore any errors */
550 axp20x_regulator_parse_dt(pdev
);
552 for (i
= 0; i
< nregulators
; i
++) {
553 const struct regulator_desc
*desc
= ®ulators
[i
];
554 struct regulator_desc
*new_desc
;
557 * If this regulator is a slave in a poly-phase setup,
558 * skip it, as its controls are bound to the master
559 * regulator and won't work.
561 if (axp20x_is_polyphase_slave(axp20x
, i
))
565 * Regulators DC1SW and DC5LDO are connected internally,
566 * so we have to handle their supply names separately.
568 * We always register the regulators in proper sequence,
569 * so the supply names are correctly read. See the last
570 * part of this loop to see where we save the DT defined
573 if ((regulators
== axp22x_regulators
&& i
== AXP22X_DC1SW
) ||
574 (regulators
== axp809_regulators
&& i
== AXP809_DC1SW
)) {
575 new_desc
= devm_kzalloc(&pdev
->dev
, sizeof(*desc
),
577 *new_desc
= regulators
[i
];
578 new_desc
->supply_name
= dcdc1_name
;
582 if ((regulators
== axp22x_regulators
&& i
== AXP22X_DC5LDO
) ||
583 (regulators
== axp809_regulators
&& i
== AXP809_DC5LDO
)) {
584 new_desc
= devm_kzalloc(&pdev
->dev
, sizeof(*desc
),
586 *new_desc
= regulators
[i
];
587 new_desc
->supply_name
= dcdc5_name
;
591 rdev
= devm_regulator_register(&pdev
->dev
, desc
, &config
);
593 dev_err(&pdev
->dev
, "Failed to register %s\n",
596 return PTR_ERR(rdev
);
599 ret
= of_property_read_u32(rdev
->dev
.of_node
,
600 "x-powers,dcdc-workmode",
603 if (axp20x_set_dcdc_workmode(rdev
, i
, workmode
))
604 dev_err(&pdev
->dev
, "Failed to set workmode on %s\n",
609 * Save AXP22X DCDC1 / DCDC5 regulator names for later.
611 if ((regulators
== axp22x_regulators
&& i
== AXP22X_DCDC1
) ||
612 (regulators
== axp809_regulators
&& i
== AXP809_DCDC1
))
613 of_property_read_string(rdev
->dev
.of_node
,
617 if ((regulators
== axp22x_regulators
&& i
== AXP22X_DCDC5
) ||
618 (regulators
== axp809_regulators
&& i
== AXP809_DCDC5
))
619 of_property_read_string(rdev
->dev
.of_node
,
625 /* Change N_VBUSEN sense pin to DRIVEVBUS output pin */
626 regmap_update_bits(axp20x
->regmap
, AXP20X_OVER_TMP
,
627 AXP22X_MISC_N_VBUSEN_FUNC
, 0);
628 rdev
= devm_regulator_register(&pdev
->dev
,
629 &axp22x_drivevbus_regulator
,
632 dev_err(&pdev
->dev
, "Failed to register drivevbus\n");
633 return PTR_ERR(rdev
);
640 static struct platform_driver axp20x_regulator_driver
= {
641 .probe
= axp20x_regulator_probe
,
643 .name
= "axp20x-regulator",
647 module_platform_driver(axp20x_regulator_driver
);
649 MODULE_LICENSE("GPL v2");
650 MODULE_AUTHOR("Carlo Caione <carlo@caione.org>");
651 MODULE_DESCRIPTION("Regulator Driver for AXP20X PMIC");
652 MODULE_ALIAS("platform:axp20x-regulator");