1 // SPDX-License-Identifier: GPL-2.0+
2 //
3 // Copyright (C) 2011-2013 Freescale Semiconductor, Inc. All Rights Reserved.
4
5 #include <linux/kernel.h>
6 #include <linux/module.h>
7 #include <linux/init.h>
8 #include <linux/err.h>
9 #include <linux/of.h>
10 #include <linux/of_device.h>
11 #include <linux/regulator/of_regulator.h>
12 #include <linux/platform_device.h>
13 #include <linux/regulator/driver.h>
14 #include <linux/regulator/machine.h>
15 #include <linux/regulator/pfuze100.h>
16 #include <linux/i2c.h>
17 #include <linux/slab.h>
18 #include <linux/regmap.h>
19
20 #define PFUZE_FLAG_DISABLE_SW BIT(1)
21
22 #define PFUZE_NUMREGS 128
23 #define PFUZE100_VOL_OFFSET 0
24 #define PFUZE100_STANDBY_OFFSET 1
25 #define PFUZE100_MODE_OFFSET 3
26 #define PFUZE100_CONF_OFFSET 4
27
28 #define PFUZE100_DEVICEID 0x0
29 #define PFUZE100_REVID 0x3
30 #define PFUZE100_FABID 0x4
31
32 #define PFUZE100_COINVOL 0x1a
33 #define PFUZE100_SW1ABVOL 0x20
34 #define PFUZE100_SW1ABMODE 0x23
35 #define PFUZE100_SW1CVOL 0x2e
36 #define PFUZE100_SW1CMODE 0x31
37 #define PFUZE100_SW2VOL 0x35
38 #define PFUZE100_SW2MODE 0x38
39 #define PFUZE100_SW3AVOL 0x3c
40 #define PFUZE100_SW3AMODE 0x3f
41 #define PFUZE100_SW3BVOL 0x43
42 #define PFUZE100_SW3BMODE 0x46
43 #define PFUZE100_SW4VOL 0x4a
44 #define PFUZE100_SW4MODE 0x4d
45 #define PFUZE100_SWBSTCON1 0x66
46 #define PFUZE100_VREFDDRCON 0x6a
47 #define PFUZE100_VSNVSVOL 0x6b
48 #define PFUZE100_VGEN1VOL 0x6c
49 #define PFUZE100_VGEN2VOL 0x6d
50 #define PFUZE100_VGEN3VOL 0x6e
51 #define PFUZE100_VGEN4VOL 0x6f
52 #define PFUZE100_VGEN5VOL 0x70
53 #define PFUZE100_VGEN6VOL 0x71
54
55 #define PFUZE100_SWxMODE_MASK 0xf
56 #define PFUZE100_SWxMODE_APS_APS 0x8
57 #define PFUZE100_SWxMODE_APS_OFF 0x4
58
59 #define PFUZE100_VGENxLPWR BIT(6)
60 #define PFUZE100_VGENxSTBY BIT(5)
61
62 enum chips { PFUZE100, PFUZE200, PFUZE3000 = 3, PFUZE3001 = 0x31, };
63
64 struct pfuze_regulator {
65 struct regulator_desc desc;
66 unsigned char stby_reg;
67 unsigned char stby_mask;
68 bool sw_reg;
69 };
70
71 struct pfuze_chip {
72 int chip_id;
73 int flags;
74 struct regmap *regmap;
75 struct device *dev;
76 struct pfuze_regulator regulator_descs[PFUZE100_MAX_REGULATOR];
77 struct regulator_dev *regulators[PFUZE100_MAX_REGULATOR];
78 struct pfuze_regulator *pfuze_regulators;
79 };
80
81 static const int pfuze100_swbst[] = {
82 5000000, 5050000, 5100000, 5150000,
83 };
84
85 static const int pfuze100_vsnvs[] = {
86 1000000, 1100000, 1200000, 1300000, 1500000, 1800000, 3000000,
87 };
88
89 static const int pfuze100_coin[] = {
90 2500000, 2700000, 2800000, 2900000, 3000000, 3100000, 3200000, 3300000,
91 };
92
93 static const int pfuze3000_sw1a[] = {
94 700000, 725000, 750000, 775000, 800000, 825000, 850000, 875000,
95 900000, 925000, 950000, 975000, 1000000, 1025000, 1050000, 1075000,
96 1100000, 1125000, 1150000, 1175000, 1200000, 1225000, 1250000, 1275000,
97 1300000, 1325000, 1350000, 1375000, 1400000, 1425000, 1800000, 3300000,
98 };
99
100 static const int pfuze3000_sw2lo[] = {
101 1500000, 1550000, 1600000, 1650000, 1700000, 1750000, 1800000, 1850000,
102 };
103
104 static const int pfuze3000_sw2hi[] = {
105 2500000, 2800000, 2850000, 3000000, 3100000, 3150000, 3200000, 3300000,
106 };
107
108 static const struct of_device_id pfuze_dt_ids[] = {
109 { .compatible = "fsl,pfuze100", .data = (void *)PFUZE100},
110 { .compatible = "fsl,pfuze200", .data = (void *)PFUZE200},
111 { .compatible = "fsl,pfuze3000", .data = (void *)PFUZE3000},
112 { .compatible = "fsl,pfuze3001", .data = (void *)PFUZE3001},
113 { }
114 };
115 MODULE_DEVICE_TABLE(of, pfuze_dt_ids);
116
pfuze100_set_ramp_delay(struct regulator_dev * rdev,int ramp_delay)117 static int pfuze100_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
118 {
119 struct pfuze_chip *pfuze100 = rdev_get_drvdata(rdev);
120 int id = rdev_get_id(rdev);
121 bool reg_has_ramp_delay;
122 unsigned int ramp_bits = 0;
123 int ret;
124
125 switch (pfuze100->chip_id) {
126 case PFUZE3001:
127 /* no dynamic voltage scaling for PF3001 */
128 reg_has_ramp_delay = false;
129 break;
130 case PFUZE3000:
131 reg_has_ramp_delay = (id < PFUZE3000_SWBST);
132 break;
133 case PFUZE200:
134 reg_has_ramp_delay = (id < PFUZE200_SWBST);
135 break;
136 case PFUZE100:
137 default:
138 reg_has_ramp_delay = (id < PFUZE100_SWBST);
139 break;
140 }
141
142 if (reg_has_ramp_delay) {
143 if (ramp_delay > 0) {
144 ramp_delay = 12500 / ramp_delay;
145 ramp_bits = (ramp_delay >> 1) - (ramp_delay >> 3);
146 }
147
148 ret = regmap_update_bits(pfuze100->regmap,
149 rdev->desc->vsel_reg + 4,
150 0xc0, ramp_bits << 6);
151 if (ret < 0)
152 dev_err(pfuze100->dev, "ramp failed, err %d\n", ret);
153 } else {
154 ret = -EACCES;
155 }
156
157 return ret;
158 }
159
160 static const struct regulator_ops pfuze100_ldo_regulator_ops = {
161 .enable = regulator_enable_regmap,
162 .disable = regulator_disable_regmap,
163 .is_enabled = regulator_is_enabled_regmap,
164 .list_voltage = regulator_list_voltage_linear,
165 .set_voltage_sel = regulator_set_voltage_sel_regmap,
166 .get_voltage_sel = regulator_get_voltage_sel_regmap,
167 };
168
169 static const struct regulator_ops pfuze100_fixed_regulator_ops = {
170 .enable = regulator_enable_regmap,
171 .disable = regulator_disable_regmap,
172 .is_enabled = regulator_is_enabled_regmap,
173 .list_voltage = regulator_list_voltage_linear,
174 };
175
176 static const struct regulator_ops pfuze100_sw_regulator_ops = {
177 .list_voltage = regulator_list_voltage_linear,
178 .set_voltage_sel = regulator_set_voltage_sel_regmap,
179 .get_voltage_sel = regulator_get_voltage_sel_regmap,
180 .set_voltage_time_sel = regulator_set_voltage_time_sel,
181 .set_ramp_delay = pfuze100_set_ramp_delay,
182 };
183
184 static const struct regulator_ops pfuze100_sw_disable_regulator_ops = {
185 .enable = regulator_enable_regmap,
186 .disable = regulator_disable_regmap,
187 .is_enabled = regulator_is_enabled_regmap,
188 .list_voltage = regulator_list_voltage_linear,
189 .set_voltage_sel = regulator_set_voltage_sel_regmap,
190 .get_voltage_sel = regulator_get_voltage_sel_regmap,
191 .set_voltage_time_sel = regulator_set_voltage_time_sel,
192 .set_ramp_delay = pfuze100_set_ramp_delay,
193 };
194
195 static const struct regulator_ops pfuze100_swb_regulator_ops = {
196 .enable = regulator_enable_regmap,
197 .disable = regulator_disable_regmap,
198 .is_enabled = regulator_is_enabled_regmap,
199 .list_voltage = regulator_list_voltage_table,
200 .map_voltage = regulator_map_voltage_ascend,
201 .set_voltage_sel = regulator_set_voltage_sel_regmap,
202 .get_voltage_sel = regulator_get_voltage_sel_regmap,
203
204 };
205
206 static const struct regulator_ops pfuze3000_sw_regulator_ops = {
207 .enable = regulator_enable_regmap,
208 .disable = regulator_disable_regmap,
209 .is_enabled = regulator_is_enabled_regmap,
210 .list_voltage = regulator_list_voltage_table,
211 .map_voltage = regulator_map_voltage_ascend,
212 .set_voltage_sel = regulator_set_voltage_sel_regmap,
213 .get_voltage_sel = regulator_get_voltage_sel_regmap,
214 .set_voltage_time_sel = regulator_set_voltage_time_sel,
215 .set_ramp_delay = pfuze100_set_ramp_delay,
216
217 };
218
219 #define PFUZE100_FIXED_REG(_chip, _name, base, voltage) \
220 [_chip ## _ ## _name] = { \
221 .desc = { \
222 .name = #_name, \
223 .n_voltages = 1, \
224 .ops = &pfuze100_fixed_regulator_ops, \
225 .type = REGULATOR_VOLTAGE, \
226 .id = _chip ## _ ## _name, \
227 .owner = THIS_MODULE, \
228 .min_uV = (voltage), \
229 .enable_reg = (base), \
230 .enable_mask = 0x10, \
231 }, \
232 }
233
234 #define PFUZE100_SW_REG(_chip, _name, base, min, max, step) \
235 [_chip ## _ ## _name] = { \
236 .desc = { \
237 .name = #_name,\
238 .n_voltages = ((max) - (min)) / (step) + 1, \
239 .ops = &pfuze100_sw_regulator_ops, \
240 .type = REGULATOR_VOLTAGE, \
241 .id = _chip ## _ ## _name, \
242 .owner = THIS_MODULE, \
243 .min_uV = (min), \
244 .uV_step = (step), \
245 .vsel_reg = (base) + PFUZE100_VOL_OFFSET, \
246 .vsel_mask = 0x3f, \
247 .enable_reg = (base) + PFUZE100_MODE_OFFSET, \
248 .enable_mask = 0xf, \
249 }, \
250 .stby_reg = (base) + PFUZE100_STANDBY_OFFSET, \
251 .stby_mask = 0x3f, \
252 .sw_reg = true, \
253 }
254
255 #define PFUZE100_SWB_REG(_chip, _name, base, mask, voltages) \
256 [_chip ## _ ## _name] = { \
257 .desc = { \
258 .name = #_name, \
259 .n_voltages = ARRAY_SIZE(voltages), \
260 .ops = &pfuze100_swb_regulator_ops, \
261 .type = REGULATOR_VOLTAGE, \
262 .id = _chip ## _ ## _name, \
263 .owner = THIS_MODULE, \
264 .volt_table = voltages, \
265 .vsel_reg = (base), \
266 .vsel_mask = (mask), \
267 .enable_reg = (base), \
268 .enable_mask = 0x48, \
269 }, \
270 }
271
272 #define PFUZE100_VGEN_REG(_chip, _name, base, min, max, step) \
273 [_chip ## _ ## _name] = { \
274 .desc = { \
275 .name = #_name, \
276 .n_voltages = ((max) - (min)) / (step) + 1, \
277 .ops = &pfuze100_ldo_regulator_ops, \
278 .type = REGULATOR_VOLTAGE, \
279 .id = _chip ## _ ## _name, \
280 .owner = THIS_MODULE, \
281 .min_uV = (min), \
282 .uV_step = (step), \
283 .vsel_reg = (base), \
284 .vsel_mask = 0xf, \
285 .enable_reg = (base), \
286 .enable_mask = 0x10, \
287 }, \
288 .stby_reg = (base), \
289 .stby_mask = 0x20, \
290 }
291
292 #define PFUZE100_COIN_REG(_chip, _name, base, mask, voltages) \
293 [_chip ## _ ## _name] = { \
294 .desc = { \
295 .name = #_name, \
296 .n_voltages = ARRAY_SIZE(voltages), \
297 .ops = &pfuze100_swb_regulator_ops, \
298 .type = REGULATOR_VOLTAGE, \
299 .id = _chip ## _ ## _name, \
300 .owner = THIS_MODULE, \
301 .volt_table = voltages, \
302 .vsel_reg = (base), \
303 .vsel_mask = (mask), \
304 .enable_reg = (base), \
305 .enable_mask = 0x8, \
306 }, \
307 }
308
309 #define PFUZE3000_VCC_REG(_chip, _name, base, min, max, step) { \
310 .desc = { \
311 .name = #_name, \
312 .n_voltages = ((max) - (min)) / (step) + 1, \
313 .ops = &pfuze100_ldo_regulator_ops, \
314 .type = REGULATOR_VOLTAGE, \
315 .id = _chip ## _ ## _name, \
316 .owner = THIS_MODULE, \
317 .min_uV = (min), \
318 .uV_step = (step), \
319 .vsel_reg = (base), \
320 .vsel_mask = 0x3, \
321 .enable_reg = (base), \
322 .enable_mask = 0x10, \
323 }, \
324 .stby_reg = (base), \
325 .stby_mask = 0x20, \
326 }
327
328 /* No linar case for the some switches of PFUZE3000 */
329 #define PFUZE3000_SW_REG(_chip, _name, base, mask, voltages) \
330 [_chip ## _ ## _name] = { \
331 .desc = { \
332 .name = #_name, \
333 .n_voltages = ARRAY_SIZE(voltages), \
334 .ops = &pfuze3000_sw_regulator_ops, \
335 .type = REGULATOR_VOLTAGE, \
336 .id = _chip ## _ ## _name, \
337 .owner = THIS_MODULE, \
338 .volt_table = voltages, \
339 .vsel_reg = (base) + PFUZE100_VOL_OFFSET, \
340 .vsel_mask = (mask), \
341 .enable_reg = (base) + PFUZE100_MODE_OFFSET, \
342 .enable_mask = 0xf, \
343 .enable_val = 0x8, \
344 .enable_time = 500, \
345 }, \
346 .stby_reg = (base) + PFUZE100_STANDBY_OFFSET, \
347 .stby_mask = (mask), \
348 .sw_reg = true, \
349 }
350
351 #define PFUZE3000_SW3_REG(_chip, _name, base, min, max, step) { \
352 .desc = { \
353 .name = #_name,\
354 .n_voltages = ((max) - (min)) / (step) + 1, \
355 .ops = &pfuze100_sw_regulator_ops, \
356 .type = REGULATOR_VOLTAGE, \
357 .id = _chip ## _ ## _name, \
358 .owner = THIS_MODULE, \
359 .min_uV = (min), \
360 .uV_step = (step), \
361 .vsel_reg = (base) + PFUZE100_VOL_OFFSET, \
362 .vsel_mask = 0xf, \
363 }, \
364 .stby_reg = (base) + PFUZE100_STANDBY_OFFSET, \
365 .stby_mask = 0xf, \
366 }
367
368 /* PFUZE100 */
369 static struct pfuze_regulator pfuze100_regulators[] = {
370 PFUZE100_SW_REG(PFUZE100, SW1AB, PFUZE100_SW1ABVOL, 300000, 1875000, 25000),
371 PFUZE100_SW_REG(PFUZE100, SW1C, PFUZE100_SW1CVOL, 300000, 1875000, 25000),
372 PFUZE100_SW_REG(PFUZE100, SW2, PFUZE100_SW2VOL, 400000, 1975000, 25000),
373 PFUZE100_SW_REG(PFUZE100, SW3A, PFUZE100_SW3AVOL, 400000, 1975000, 25000),
374 PFUZE100_SW_REG(PFUZE100, SW3B, PFUZE100_SW3BVOL, 400000, 1975000, 25000),
375 PFUZE100_SW_REG(PFUZE100, SW4, PFUZE100_SW4VOL, 400000, 1975000, 25000),
376 PFUZE100_SWB_REG(PFUZE100, SWBST, PFUZE100_SWBSTCON1, 0x3 , pfuze100_swbst),
377 PFUZE100_SWB_REG(PFUZE100, VSNVS, PFUZE100_VSNVSVOL, 0x7, pfuze100_vsnvs),
378 PFUZE100_FIXED_REG(PFUZE100, VREFDDR, PFUZE100_VREFDDRCON, 750000),
379 PFUZE100_VGEN_REG(PFUZE100, VGEN1, PFUZE100_VGEN1VOL, 800000, 1550000, 50000),
380 PFUZE100_VGEN_REG(PFUZE100, VGEN2, PFUZE100_VGEN2VOL, 800000, 1550000, 50000),
381 PFUZE100_VGEN_REG(PFUZE100, VGEN3, PFUZE100_VGEN3VOL, 1800000, 3300000, 100000),
382 PFUZE100_VGEN_REG(PFUZE100, VGEN4, PFUZE100_VGEN4VOL, 1800000, 3300000, 100000),
383 PFUZE100_VGEN_REG(PFUZE100, VGEN5, PFUZE100_VGEN5VOL, 1800000, 3300000, 100000),
384 PFUZE100_VGEN_REG(PFUZE100, VGEN6, PFUZE100_VGEN6VOL, 1800000, 3300000, 100000),
385 PFUZE100_COIN_REG(PFUZE100, COIN, PFUZE100_COINVOL, 0x7, pfuze100_coin),
386 };
387
388 static struct pfuze_regulator pfuze200_regulators[] = {
389 PFUZE100_SW_REG(PFUZE200, SW1AB, PFUZE100_SW1ABVOL, 300000, 1875000, 25000),
390 PFUZE100_SW_REG(PFUZE200, SW2, PFUZE100_SW2VOL, 400000, 1975000, 25000),
391 PFUZE100_SW_REG(PFUZE200, SW3A, PFUZE100_SW3AVOL, 400000, 1975000, 25000),
392 PFUZE100_SW_REG(PFUZE200, SW3B, PFUZE100_SW3BVOL, 400000, 1975000, 25000),
393 PFUZE100_SWB_REG(PFUZE200, SWBST, PFUZE100_SWBSTCON1, 0x3 , pfuze100_swbst),
394 PFUZE100_SWB_REG(PFUZE200, VSNVS, PFUZE100_VSNVSVOL, 0x7, pfuze100_vsnvs),
395 PFUZE100_FIXED_REG(PFUZE200, VREFDDR, PFUZE100_VREFDDRCON, 750000),
396 PFUZE100_VGEN_REG(PFUZE200, VGEN1, PFUZE100_VGEN1VOL, 800000, 1550000, 50000),
397 PFUZE100_VGEN_REG(PFUZE200, VGEN2, PFUZE100_VGEN2VOL, 800000, 1550000, 50000),
398 PFUZE100_VGEN_REG(PFUZE200, VGEN3, PFUZE100_VGEN3VOL, 1800000, 3300000, 100000),
399 PFUZE100_VGEN_REG(PFUZE200, VGEN4, PFUZE100_VGEN4VOL, 1800000, 3300000, 100000),
400 PFUZE100_VGEN_REG(PFUZE200, VGEN5, PFUZE100_VGEN5VOL, 1800000, 3300000, 100000),
401 PFUZE100_VGEN_REG(PFUZE200, VGEN6, PFUZE100_VGEN6VOL, 1800000, 3300000, 100000),
402 PFUZE100_COIN_REG(PFUZE200, COIN, PFUZE100_COINVOL, 0x7, pfuze100_coin),
403 };
404
405 static struct pfuze_regulator pfuze3000_regulators[] = {
406 PFUZE3000_SW_REG(PFUZE3000, SW1A, PFUZE100_SW1ABVOL, 0x1f, pfuze3000_sw1a),
407 PFUZE100_SW_REG(PFUZE3000, SW1B, PFUZE100_SW1CVOL, 700000, 1475000, 25000),
408 PFUZE3000_SW_REG(PFUZE3000, SW2, PFUZE100_SW2VOL, 0x7, pfuze3000_sw2lo),
409 PFUZE3000_SW3_REG(PFUZE3000, SW3, PFUZE100_SW3AVOL, 900000, 1650000, 50000),
410 PFUZE100_SWB_REG(PFUZE3000, SWBST, PFUZE100_SWBSTCON1, 0x3, pfuze100_swbst),
411 PFUZE100_SWB_REG(PFUZE3000, VSNVS, PFUZE100_VSNVSVOL, 0x7, pfuze100_vsnvs),
412 PFUZE100_FIXED_REG(PFUZE3000, VREFDDR, PFUZE100_VREFDDRCON, 750000),
413 PFUZE100_VGEN_REG(PFUZE3000, VLDO1, PFUZE100_VGEN1VOL, 1800000, 3300000, 100000),
414 PFUZE100_VGEN_REG(PFUZE3000, VLDO2, PFUZE100_VGEN2VOL, 800000, 1550000, 50000),
415 PFUZE3000_VCC_REG(PFUZE3000, VCCSD, PFUZE100_VGEN3VOL, 2850000, 3300000, 150000),
416 PFUZE3000_VCC_REG(PFUZE3000, V33, PFUZE100_VGEN4VOL, 2850000, 3300000, 150000),
417 PFUZE100_VGEN_REG(PFUZE3000, VLDO3, PFUZE100_VGEN5VOL, 1800000, 3300000, 100000),
418 PFUZE100_VGEN_REG(PFUZE3000, VLDO4, PFUZE100_VGEN6VOL, 1800000, 3300000, 100000),
419 };
420
421 static struct pfuze_regulator pfuze3001_regulators[] = {
422 PFUZE3000_SW_REG(PFUZE3001, SW1, PFUZE100_SW1ABVOL, 0x1f, pfuze3000_sw1a),
423 PFUZE3000_SW_REG(PFUZE3001, SW2, PFUZE100_SW2VOL, 0x7, pfuze3000_sw2lo),
424 PFUZE3000_SW3_REG(PFUZE3001, SW3, PFUZE100_SW3AVOL, 900000, 1650000, 50000),
425 PFUZE100_SWB_REG(PFUZE3001, VSNVS, PFUZE100_VSNVSVOL, 0x7, pfuze100_vsnvs),
426 PFUZE100_VGEN_REG(PFUZE3001, VLDO1, PFUZE100_VGEN1VOL, 1800000, 3300000, 100000),
427 PFUZE100_VGEN_REG(PFUZE3001, VLDO2, PFUZE100_VGEN2VOL, 800000, 1550000, 50000),
428 PFUZE3000_VCC_REG(PFUZE3001, VCCSD, PFUZE100_VGEN3VOL, 2850000, 3300000, 150000),
429 PFUZE3000_VCC_REG(PFUZE3001, V33, PFUZE100_VGEN4VOL, 2850000, 3300000, 150000),
430 PFUZE100_VGEN_REG(PFUZE3001, VLDO3, PFUZE100_VGEN5VOL, 1800000, 3300000, 100000),
431 PFUZE100_VGEN_REG(PFUZE3001, VLDO4, PFUZE100_VGEN6VOL, 1800000, 3300000, 100000),
432 };
433
434 /* PFUZE100 */
435 static struct of_regulator_match pfuze100_matches[] = {
436 { .name = "sw1ab", },
437 { .name = "sw1c", },
438 { .name = "sw2", },
439 { .name = "sw3a", },
440 { .name = "sw3b", },
441 { .name = "sw4", },
442 { .name = "swbst", },
443 { .name = "vsnvs", },
444 { .name = "vrefddr", },
445 { .name = "vgen1", },
446 { .name = "vgen2", },
447 { .name = "vgen3", },
448 { .name = "vgen4", },
449 { .name = "vgen5", },
450 { .name = "vgen6", },
451 { .name = "coin", },
452 };
453
454 /* PFUZE200 */
455 static struct of_regulator_match pfuze200_matches[] = {
456
457 { .name = "sw1ab", },
458 { .name = "sw2", },
459 { .name = "sw3a", },
460 { .name = "sw3b", },
461 { .name = "swbst", },
462 { .name = "vsnvs", },
463 { .name = "vrefddr", },
464 { .name = "vgen1", },
465 { .name = "vgen2", },
466 { .name = "vgen3", },
467 { .name = "vgen4", },
468 { .name = "vgen5", },
469 { .name = "vgen6", },
470 { .name = "coin", },
471 };
472
473 /* PFUZE3000 */
474 static struct of_regulator_match pfuze3000_matches[] = {
475
476 { .name = "sw1a", },
477 { .name = "sw1b", },
478 { .name = "sw2", },
479 { .name = "sw3", },
480 { .name = "swbst", },
481 { .name = "vsnvs", },
482 { .name = "vrefddr", },
483 { .name = "vldo1", },
484 { .name = "vldo2", },
485 { .name = "vccsd", },
486 { .name = "v33", },
487 { .name = "vldo3", },
488 { .name = "vldo4", },
489 };
490
491 /* PFUZE3001 */
492 static struct of_regulator_match pfuze3001_matches[] = {
493
494 { .name = "sw1", },
495 { .name = "sw2", },
496 { .name = "sw3", },
497 { .name = "vsnvs", },
498 { .name = "vldo1", },
499 { .name = "vldo2", },
500 { .name = "vccsd", },
501 { .name = "v33", },
502 { .name = "vldo3", },
503 { .name = "vldo4", },
504 };
505
506 static struct of_regulator_match *pfuze_matches;
507
pfuze_parse_regulators_dt(struct pfuze_chip * chip)508 static int pfuze_parse_regulators_dt(struct pfuze_chip *chip)
509 {
510 struct device *dev = chip->dev;
511 struct device_node *np, *parent;
512 int ret;
513
514 np = of_node_get(dev->of_node);
515 if (!np)
516 return -EINVAL;
517
518 if (of_property_read_bool(np, "fsl,pfuze-support-disable-sw"))
519 chip->flags |= PFUZE_FLAG_DISABLE_SW;
520
521 parent = of_get_child_by_name(np, "regulators");
522 if (!parent) {
523 dev_err(dev, "regulators node not found\n");
524 return -EINVAL;
525 }
526
527 switch (chip->chip_id) {
528 case PFUZE3001:
529 pfuze_matches = pfuze3001_matches;
530 ret = of_regulator_match(dev, parent, pfuze3001_matches,
531 ARRAY_SIZE(pfuze3001_matches));
532 break;
533 case PFUZE3000:
534 pfuze_matches = pfuze3000_matches;
535 ret = of_regulator_match(dev, parent, pfuze3000_matches,
536 ARRAY_SIZE(pfuze3000_matches));
537 break;
538 case PFUZE200:
539 pfuze_matches = pfuze200_matches;
540 ret = of_regulator_match(dev, parent, pfuze200_matches,
541 ARRAY_SIZE(pfuze200_matches));
542 break;
543
544 case PFUZE100:
545 default:
546 pfuze_matches = pfuze100_matches;
547 ret = of_regulator_match(dev, parent, pfuze100_matches,
548 ARRAY_SIZE(pfuze100_matches));
549 break;
550 }
551
552 of_node_put(parent);
553 if (ret < 0) {
554 dev_err(dev, "Error parsing regulator init data: %d\n",
555 ret);
556 return ret;
557 }
558
559 return 0;
560 }
561
match_init_data(int index)562 static inline struct regulator_init_data *match_init_data(int index)
563 {
564 return pfuze_matches[index].init_data;
565 }
566
match_of_node(int index)567 static inline struct device_node *match_of_node(int index)
568 {
569 return pfuze_matches[index].of_node;
570 }
571
572 static struct pfuze_chip *syspm_pfuze_chip;
573
pfuze_power_off_prepare(void)574 static void pfuze_power_off_prepare(void)
575 {
576 dev_info(syspm_pfuze_chip->dev, "Configure standby mode for power off");
577
578 /* Switch from default mode: APS/APS to APS/Off */
579 regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_SW1ABMODE,
580 PFUZE100_SWxMODE_MASK, PFUZE100_SWxMODE_APS_OFF);
581 regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_SW1CMODE,
582 PFUZE100_SWxMODE_MASK, PFUZE100_SWxMODE_APS_OFF);
583 regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_SW2MODE,
584 PFUZE100_SWxMODE_MASK, PFUZE100_SWxMODE_APS_OFF);
585 regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_SW3AMODE,
586 PFUZE100_SWxMODE_MASK, PFUZE100_SWxMODE_APS_OFF);
587 regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_SW3BMODE,
588 PFUZE100_SWxMODE_MASK, PFUZE100_SWxMODE_APS_OFF);
589 regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_SW4MODE,
590 PFUZE100_SWxMODE_MASK, PFUZE100_SWxMODE_APS_OFF);
591
592 regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_VGEN1VOL,
593 PFUZE100_VGENxLPWR | PFUZE100_VGENxSTBY,
594 PFUZE100_VGENxSTBY);
595 regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_VGEN2VOL,
596 PFUZE100_VGENxLPWR | PFUZE100_VGENxSTBY,
597 PFUZE100_VGENxSTBY);
598 regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_VGEN3VOL,
599 PFUZE100_VGENxLPWR | PFUZE100_VGENxSTBY,
600 PFUZE100_VGENxSTBY);
601 regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_VGEN4VOL,
602 PFUZE100_VGENxLPWR | PFUZE100_VGENxSTBY,
603 PFUZE100_VGENxSTBY);
604 regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_VGEN5VOL,
605 PFUZE100_VGENxLPWR | PFUZE100_VGENxSTBY,
606 PFUZE100_VGENxSTBY);
607 regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_VGEN6VOL,
608 PFUZE100_VGENxLPWR | PFUZE100_VGENxSTBY,
609 PFUZE100_VGENxSTBY);
610 }
611
pfuze_power_off_prepare_init(struct pfuze_chip * pfuze_chip)612 static int pfuze_power_off_prepare_init(struct pfuze_chip *pfuze_chip)
613 {
614 if (pfuze_chip->chip_id != PFUZE100) {
615 dev_warn(pfuze_chip->dev, "Requested pm_power_off_prepare handler for not supported chip\n");
616 return -ENODEV;
617 }
618
619 if (pm_power_off_prepare) {
620 dev_warn(pfuze_chip->dev, "pm_power_off_prepare is already registered.\n");
621 return -EBUSY;
622 }
623
624 if (syspm_pfuze_chip) {
625 dev_warn(pfuze_chip->dev, "syspm_pfuze_chip is already set.\n");
626 return -EBUSY;
627 }
628
629 syspm_pfuze_chip = pfuze_chip;
630 pm_power_off_prepare = pfuze_power_off_prepare;
631
632 return 0;
633 }
634
pfuze_identify(struct pfuze_chip * pfuze_chip)635 static int pfuze_identify(struct pfuze_chip *pfuze_chip)
636 {
637 unsigned int value;
638 int ret;
639
640 ret = regmap_read(pfuze_chip->regmap, PFUZE100_DEVICEID, &value);
641 if (ret)
642 return ret;
643
644 if (((value & 0x0f) == 0x8) && (pfuze_chip->chip_id == PFUZE100)) {
645 /*
646 * Freescale misprogrammed 1-3% of parts prior to week 8 of 2013
647 * as ID=8 in PFUZE100
648 */
649 dev_info(pfuze_chip->dev, "Assuming misprogrammed ID=0x8");
650 } else if ((value & 0x0f) != pfuze_chip->chip_id &&
651 (value & 0xf0) >> 4 != pfuze_chip->chip_id &&
652 (value != pfuze_chip->chip_id)) {
653 /* device id NOT match with your setting */
654 dev_warn(pfuze_chip->dev, "Illegal ID: %x\n", value);
655 return -ENODEV;
656 }
657
658 ret = regmap_read(pfuze_chip->regmap, PFUZE100_REVID, &value);
659 if (ret)
660 return ret;
661 dev_info(pfuze_chip->dev,
662 "Full layer: %x, Metal layer: %x\n",
663 (value & 0xf0) >> 4, value & 0x0f);
664
665 ret = regmap_read(pfuze_chip->regmap, PFUZE100_FABID, &value);
666 if (ret)
667 return ret;
668 dev_info(pfuze_chip->dev, "FAB: %x, FIN: %x\n",
669 (value & 0xc) >> 2, value & 0x3);
670
671 return 0;
672 }
673
674 static const struct regmap_config pfuze_regmap_config = {
675 .reg_bits = 8,
676 .val_bits = 8,
677 .max_register = PFUZE_NUMREGS - 1,
678 .cache_type = REGCACHE_RBTREE,
679 };
680
pfuze100_regulator_probe(struct i2c_client * client,const struct i2c_device_id * id)681 static int pfuze100_regulator_probe(struct i2c_client *client,
682 const struct i2c_device_id *id)
683 {
684 struct pfuze_chip *pfuze_chip;
685 struct regulator_config config = { };
686 int i, ret;
687 const struct of_device_id *match;
688 u32 regulator_num;
689 u32 sw_check_start, sw_check_end, sw_hi = 0x40;
690
691 pfuze_chip = devm_kzalloc(&client->dev, sizeof(*pfuze_chip),
692 GFP_KERNEL);
693 if (!pfuze_chip)
694 return -ENOMEM;
695
696 if (client->dev.of_node) {
697 match = of_match_device(of_match_ptr(pfuze_dt_ids),
698 &client->dev);
699 if (!match) {
700 dev_err(&client->dev, "Error: No device match found\n");
701 return -ENODEV;
702 }
703 pfuze_chip->chip_id = (int)(long)match->data;
704 } else if (id) {
705 pfuze_chip->chip_id = id->driver_data;
706 } else {
707 dev_err(&client->dev, "No dts match or id table match found\n");
708 return -ENODEV;
709 }
710
711 i2c_set_clientdata(client, pfuze_chip);
712 pfuze_chip->dev = &client->dev;
713
714 pfuze_chip->regmap = devm_regmap_init_i2c(client, &pfuze_regmap_config);
715 if (IS_ERR(pfuze_chip->regmap)) {
716 ret = PTR_ERR(pfuze_chip->regmap);
717 dev_err(&client->dev,
718 "regmap allocation failed with err %d\n", ret);
719 return ret;
720 }
721
722 ret = pfuze_identify(pfuze_chip);
723 if (ret) {
724 dev_err(&client->dev, "unrecognized pfuze chip ID!\n");
725 return ret;
726 }
727
728 /* use the right regulators after identify the right device */
729 switch (pfuze_chip->chip_id) {
730 case PFUZE3001:
731 pfuze_chip->pfuze_regulators = pfuze3001_regulators;
732 regulator_num = ARRAY_SIZE(pfuze3001_regulators);
733 sw_check_start = PFUZE3001_SW2;
734 sw_check_end = PFUZE3001_SW2;
735 sw_hi = 1 << 3;
736 break;
737 case PFUZE3000:
738 pfuze_chip->pfuze_regulators = pfuze3000_regulators;
739 regulator_num = ARRAY_SIZE(pfuze3000_regulators);
740 sw_check_start = PFUZE3000_SW2;
741 sw_check_end = PFUZE3000_SW2;
742 sw_hi = 1 << 3;
743 break;
744 case PFUZE200:
745 pfuze_chip->pfuze_regulators = pfuze200_regulators;
746 regulator_num = ARRAY_SIZE(pfuze200_regulators);
747 sw_check_start = PFUZE200_SW2;
748 sw_check_end = PFUZE200_SW3B;
749 break;
750 case PFUZE100:
751 default:
752 pfuze_chip->pfuze_regulators = pfuze100_regulators;
753 regulator_num = ARRAY_SIZE(pfuze100_regulators);
754 sw_check_start = PFUZE100_SW2;
755 sw_check_end = PFUZE100_SW4;
756 break;
757 }
758 dev_info(&client->dev, "pfuze%s found.\n",
759 (pfuze_chip->chip_id == PFUZE100) ? "100" :
760 (((pfuze_chip->chip_id == PFUZE200) ? "200" :
761 ((pfuze_chip->chip_id == PFUZE3000) ? "3000" : "3001"))));
762
763 memcpy(pfuze_chip->regulator_descs, pfuze_chip->pfuze_regulators,
764 sizeof(pfuze_chip->regulator_descs));
765
766 ret = pfuze_parse_regulators_dt(pfuze_chip);
767 if (ret)
768 return ret;
769
770 for (i = 0; i < regulator_num; i++) {
771 struct regulator_init_data *init_data;
772 struct regulator_desc *desc;
773 int val;
774
775 desc = &pfuze_chip->regulator_descs[i].desc;
776
777 init_data = match_init_data(i);
778
779 /* SW2~SW4 high bit check and modify the voltage value table */
780 if (i >= sw_check_start && i <= sw_check_end) {
781 ret = regmap_read(pfuze_chip->regmap,
782 desc->vsel_reg, &val);
783 if (ret) {
784 dev_err(&client->dev, "Fails to read from the register.\n");
785 return ret;
786 }
787
788 if (val & sw_hi) {
789 if (pfuze_chip->chip_id == PFUZE3000 ||
790 pfuze_chip->chip_id == PFUZE3001) {
791 desc->volt_table = pfuze3000_sw2hi;
792 desc->n_voltages = ARRAY_SIZE(pfuze3000_sw2hi);
793 } else {
794 desc->min_uV = 800000;
795 desc->uV_step = 50000;
796 desc->n_voltages = 51;
797 }
798 }
799 }
800
801 /*
802 * Allow SW regulators to turn off. Checking it trough a flag is
803 * a workaround to keep the backward compatibility with existing
804 * old dtb's which may relay on the fact that we didn't disable
805 * the switched regulator till yet.
806 */
807 if (pfuze_chip->flags & PFUZE_FLAG_DISABLE_SW) {
808 if (pfuze_chip->chip_id == PFUZE100 ||
809 pfuze_chip->chip_id == PFUZE200) {
810 if (pfuze_chip->regulator_descs[i].sw_reg) {
811 desc->ops = &pfuze100_sw_disable_regulator_ops;
812 desc->enable_val = 0x8;
813 desc->disable_val = 0x0;
814 desc->enable_time = 500;
815 }
816 }
817 }
818
819 config.dev = &client->dev;
820 config.init_data = init_data;
821 config.driver_data = pfuze_chip;
822 config.of_node = match_of_node(i);
823
824 pfuze_chip->regulators[i] =
825 devm_regulator_register(&client->dev, desc, &config);
826 if (IS_ERR(pfuze_chip->regulators[i])) {
827 dev_err(&client->dev, "register regulator%s failed\n",
828 pfuze_chip->pfuze_regulators[i].desc.name);
829 return PTR_ERR(pfuze_chip->regulators[i]);
830 }
831 }
832
833 if (of_property_read_bool(client->dev.of_node,
834 "fsl,pmic-stby-poweroff"))
835 return pfuze_power_off_prepare_init(pfuze_chip);
836
837 return 0;
838 }
839
pfuze100_regulator_remove(struct i2c_client * client)840 static int pfuze100_regulator_remove(struct i2c_client *client)
841 {
842 if (syspm_pfuze_chip) {
843 syspm_pfuze_chip = NULL;
844 pm_power_off_prepare = NULL;
845 }
846
847 return 0;
848 }
849
850 static struct i2c_driver pfuze_driver = {
851 .driver = {
852 .name = "pfuze100-regulator",
853 .of_match_table = pfuze_dt_ids,
854 },
855 .probe = pfuze100_regulator_probe,
856 .remove = pfuze100_regulator_remove,
857 };
858 module_i2c_driver(pfuze_driver);
859
860 MODULE_AUTHOR("Robin Gong <b38343@freescale.com>");
861 MODULE_DESCRIPTION("Regulator Driver for Freescale PFUZE100/200/3000/3001 PMIC");
862 MODULE_LICENSE("GPL v2");
863