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mfd: tps65218: Remove redundant read wrapper
[linux-2.6/btrfs-unstable.git] / drivers / regulator / axp20x-regulator.c
blob54382ef902c67b3df6702ba6034793cf5d2ae059
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 struct regulator_ops axp20x_ops_fixed = {
132 .list_voltage = regulator_list_voltage_linear,
133 };
134
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,
142 };
143
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,
151 };
152
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,
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 axp806_dcdca_ranges[] = {
248 REGULATOR_LINEAR_RANGE(600000, 0x0, 0x32, 10000),
249 REGULATOR_LINEAR_RANGE(1120000, 0x33, 0x47, 20000),
250 };
251
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),
255 };
256
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),
260 };
261
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,
265 BIT(0)),
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,
270 BIT(2)),
271 AXP_DESC_RANGES(AXP806, DCDCD, "dcdcd", "vind", axp806_dcdcd_ranges,
272 64, AXP806_DCDCD_V_CTRL, 0x3f, AXP806_PWR_OUT_CTRL1,
273 BIT(3)),
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,
294 BIT(5)),
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)),
298 };
299
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),
303 };
304
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,
314 BIT(4)),
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,
319 BIT(7)),
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,
331 BIT(3)),
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)),
348 };
349
350 static int axp20x_set_dcdc_freq(struct platform_device *pdev, u32 dcdcfreq)
351 {
352 struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
353 unsigned int reg = AXP20X_DCDC_FREQ;
354 u32 min, max, def, step;
355
356 switch (axp20x->variant) {
357 case AXP202_ID:
358 case AXP209_ID:
359 min = 750;
360 max = 1875;
361 def = 1500;
362 step = 75;
363 break;
364 case AXP806_ID:
365 /*
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)
370 */
371 reg = AXP806_DCDC_FREQ_CTRL;
372 case AXP221_ID:
373 case AXP223_ID:
374 case AXP809_ID:
375 min = 1800;
376 max = 4050;
377 def = 3000;
378 step = 150;
379 break;
380 default:
381 dev_err(&pdev->dev,
382 "Setting DCDC frequency for unsupported AXP variant\n");
383 return -EINVAL;
384 }
385
386 if (dcdcfreq == 0)
387 dcdcfreq = def;
388
389 if (dcdcfreq < min) {
390 dcdcfreq = min;
391 dev_warn(&pdev->dev, "DCDC frequency too low. Set to %ukHz\n",
392 min);
393 }
394
395 if (dcdcfreq > max) {
396 dcdcfreq = max;
397 dev_warn(&pdev->dev, "DCDC frequency too high. Set to %ukHz\n",
398 max);
399 }
400
401 dcdcfreq = (dcdcfreq - min) / step;
402
403 return regmap_update_bits(axp20x->regmap, reg,
404 AXP20X_FREQ_DCDC_MASK, dcdcfreq);
405 }
406
407 static int axp20x_regulator_parse_dt(struct platform_device *pdev)
408 {
409 struct device_node *np, *regulators;
410 int ret;
411 u32 dcdcfreq = 0;
412
413 np = of_node_get(pdev->dev.parent->of_node);
414 if (!np)
415 return 0;
416
417 regulators = of_get_child_by_name(np, "regulators");
418 if (!regulators) {
419 dev_warn(&pdev->dev, "regulators node not found\n");
420 } else {
421 of_property_read_u32(regulators, "x-powers,dcdc-freq", &dcdcfreq);
422 ret = axp20x_set_dcdc_freq(pdev, dcdcfreq);
423 if (ret < 0) {
424 dev_err(&pdev->dev, "Error setting dcdc frequency: %d\n", ret);
425 return ret;
426 }
427
428 of_node_put(regulators);
429 }
430
431 return 0;
432 }
433
434 static int axp20x_set_dcdc_workmode(struct regulator_dev *rdev, int id, u32 workmode)
435 {
436 struct axp20x_dev *axp20x = rdev_get_drvdata(rdev);
437 unsigned int reg = AXP20X_DCDC_MODE;
438 unsigned int mask;
439
440 switch (axp20x->variant) {
441 case AXP202_ID:
442 case AXP209_ID:
443 if ((id != AXP20X_DCDC2) && (id != AXP20X_DCDC3))
444 return -EINVAL;
445
446 mask = AXP20X_WORKMODE_DCDC2_MASK;
447 if (id == AXP20X_DCDC3)
448 mask = AXP20X_WORKMODE_DCDC3_MASK;
449
450 workmode <<= ffs(mask) - 1;
451 break;
452
453 case AXP806_ID:
454 reg = AXP806_DCDC_MODE_CTRL2;
455 /*
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)
459 */
460 case AXP221_ID:
461 case AXP223_ID:
462 case AXP809_ID:
463 if (id < AXP22X_DCDC1 || id > AXP22X_DCDC5)
464 return -EINVAL;
465
466 mask = AXP22X_WORKMODE_DCDCX_MASK(id - AXP22X_DCDC1);
467 workmode <<= id - AXP22X_DCDC1;
468 break;
469
470 default:
471 /* should not happen */
472 WARN_ON(1);
473 return -EINVAL;
474 }
475
476 return regmap_update_bits(rdev->regmap, reg, mask, workmode);
477 }
478
479 /*
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.
482 */
483 static bool axp20x_is_polyphase_slave(struct axp20x_dev *axp20x, int id)
484 {
485 u32 reg = 0;
486
487 /* Only AXP806 has poly-phase outputs */
488 if (axp20x->variant != AXP806_ID)
489 return false;
490
491 regmap_read(axp20x->regmap, AXP806_DCDC_MODE_CTRL2, &reg);
492
493 switch (id) {
494 case AXP806_DCDCB:
495 return (((reg & GENMASK(7, 6)) == BIT(6)) ||
496 ((reg & GENMASK(7, 6)) == BIT(7)));
497 case AXP806_DCDCC:
498 return ((reg & GENMASK(7, 6)) == BIT(7));
499 case AXP806_DCDCE:
500 return !!(reg & BIT(5));
501 }
502
503 return false;
504 }
505
506 static int axp20x_regulator_probe(struct platform_device *pdev)
507 {
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,
515 };
516 int ret, i, nregulators;
517 u32 workmode;
518 const char *dcdc1_name = axp22x_regulators[AXP22X_DCDC1].name;
519 const char *dcdc5_name = axp22x_regulators[AXP22X_DCDC5].name;
520 bool drivevbus = false;
521
522 switch (axp20x->variant) {
523 case AXP202_ID:
524 case AXP209_ID:
525 regulators = axp20x_regulators;
526 nregulators = AXP20X_REG_ID_MAX;
527 break;
528 case AXP221_ID:
529 case AXP223_ID:
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");
534 break;
535 case AXP806_ID:
536 regulators = axp806_regulators;
537 nregulators = AXP806_REG_ID_MAX;
538 break;
539 case AXP809_ID:
540 regulators = axp809_regulators;
541 nregulators = AXP809_REG_ID_MAX;
542 break;
543 default:
544 dev_err(&pdev->dev, "Unsupported AXP variant: %ld\n",
545 axp20x->variant);
546 return -EINVAL;
547 }
548
549 /* This only sets the dcdc freq. Ignore any errors */
550 axp20x_regulator_parse_dt(pdev);
551
552 for (i = 0; i < nregulators; i++) {
553 const struct regulator_desc *desc = &regulators[i];
554 struct regulator_desc *new_desc;
555
556 /*
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.
560 */
561 if (axp20x_is_polyphase_slave(axp20x, i))
562 continue;
563
564 /*
565 * Regulators DC1SW and DC5LDO are connected internally,
566 * so we have to handle their supply names separately.
567 *
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
571 * name.
572 */
573 if ((regulators == axp22x_regulators && i == AXP22X_DC1SW) ||
574 (regulators == axp809_regulators && i == AXP809_DC1SW)) {
575 new_desc = devm_kzalloc(&pdev->dev, sizeof(*desc),
576 GFP_KERNEL);
577 *new_desc = regulators[i];
578 new_desc->supply_name = dcdc1_name;
579 desc = new_desc;
580 }
581
582 if ((regulators == axp22x_regulators && i == AXP22X_DC5LDO) ||
583 (regulators == axp809_regulators && i == AXP809_DC5LDO)) {
584 new_desc = devm_kzalloc(&pdev->dev, sizeof(*desc),
585 GFP_KERNEL);
586 *new_desc = regulators[i];
587 new_desc->supply_name = dcdc5_name;
588 desc = new_desc;
589 }
590
591 rdev = devm_regulator_register(&pdev->dev, desc, &config);
592 if (IS_ERR(rdev)) {
593 dev_err(&pdev->dev, "Failed to register %s\n",
594 regulators[i].name);
595
596 return PTR_ERR(rdev);
597 }
598
599 ret = of_property_read_u32(rdev->dev.of_node,
600 "x-powers,dcdc-workmode",
601 &workmode);
602 if (!ret) {
603 if (axp20x_set_dcdc_workmode(rdev, i, workmode))
604 dev_err(&pdev->dev, "Failed to set workmode on %s\n",
605 rdev->desc->name);
606 }
607
608 /*
609 * Save AXP22X DCDC1 / DCDC5 regulator names for later.
610 */
611 if ((regulators == axp22x_regulators && i == AXP22X_DCDC1) ||
612 (regulators == axp809_regulators && i == AXP809_DCDC1))
613 of_property_read_string(rdev->dev.of_node,
614 "regulator-name",
615 &dcdc1_name);
616
617 if ((regulators == axp22x_regulators && i == AXP22X_DCDC5) ||
618 (regulators == axp809_regulators && i == AXP809_DCDC5))
619 of_property_read_string(rdev->dev.of_node,
620 "regulator-name",
621 &dcdc5_name);
622 }
623
624 if (drivevbus) {
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,
630 &config);
631 if (IS_ERR(rdev)) {
632 dev_err(&pdev->dev, "Failed to register drivevbus\n");
633 return PTR_ERR(rdev);
634 }
635 }
636
637 return 0;
638 }
639
640 static struct platform_driver axp20x_regulator_driver = {
641 .probe = axp20x_regulator_probe,
642 .driver = {
643 .name = "axp20x-regulator",
644 },
645 };
646
647 module_platform_driver(axp20x_regulator_driver);
648
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");
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