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2720386e BA |
1 | /* |
2 | * Copyright (c) 2014, Sony Mobile Communications AB. | |
3 | * Copyright (c) 2012-2013, The Linux Foundation. All rights reserved. | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License version 2 and | |
7 | * only version 2 as published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | */ | |
14 | ||
15 | #include <linux/module.h> | |
16 | #include <linux/platform_device.h> | |
17 | #include <linux/of.h> | |
18 | #include <linux/of_device.h> | |
19 | #include <linux/regulator/driver.h> | |
20 | #include <linux/regulator/machine.h> | |
21 | #include <linux/regulator/of_regulator.h> | |
22 | #include <linux/mfd/qcom_rpm.h> | |
23 | ||
24 | #include <dt-bindings/mfd/qcom-rpm.h> | |
25 | ||
26 | #define MAX_REQUEST_LEN 2 | |
27 | ||
28 | struct request_member { | |
29 | int word; | |
30 | unsigned int mask; | |
31 | int shift; | |
32 | }; | |
33 | ||
34 | struct rpm_reg_parts { | |
35 | struct request_member mV; /* used if voltage is in mV */ | |
36 | struct request_member uV; /* used if voltage is in uV */ | |
37 | struct request_member ip; /* peak current in mA */ | |
38 | struct request_member pd; /* pull down enable */ | |
39 | struct request_member ia; /* average current in mA */ | |
40 | struct request_member fm; /* force mode */ | |
41 | struct request_member pm; /* power mode */ | |
42 | struct request_member pc; /* pin control */ | |
43 | struct request_member pf; /* pin function */ | |
44 | struct request_member enable_state; /* NCP and switch */ | |
45 | struct request_member comp_mode; /* NCP */ | |
46 | struct request_member freq; /* frequency: NCP and SMPS */ | |
47 | struct request_member freq_clk_src; /* clock source: SMPS */ | |
48 | struct request_member hpm; /* switch: control OCP and SS */ | |
49 | int request_len; | |
50 | }; | |
51 | ||
52 | #define FORCE_MODE_IS_2_BITS(reg) \ | |
6a642509 | 53 | (((reg)->parts->fm.mask >> (reg)->parts->fm.shift) == 3) |
2720386e BA |
54 | |
55 | struct qcom_rpm_reg { | |
56 | struct qcom_rpm *rpm; | |
57 | ||
58 | struct mutex lock; | |
59 | struct device *dev; | |
60 | struct regulator_desc desc; | |
61 | const struct rpm_reg_parts *parts; | |
62 | ||
63 | int resource; | |
64 | u32 val[MAX_REQUEST_LEN]; | |
65 | ||
66 | int uV; | |
67 | int is_enabled; | |
68 | ||
69 | bool supports_force_mode_auto; | |
70 | bool supports_force_mode_bypass; | |
71 | }; | |
72 | ||
73 | static const struct rpm_reg_parts rpm8660_ldo_parts = { | |
74 | .request_len = 2, | |
75 | .mV = { 0, 0x00000FFF, 0 }, | |
76 | .ip = { 0, 0x00FFF000, 12 }, | |
77 | .fm = { 0, 0x03000000, 24 }, | |
78 | .pc = { 0, 0x3C000000, 26 }, | |
79 | .pf = { 0, 0xC0000000, 30 }, | |
80 | .pd = { 1, 0x00000001, 0 }, | |
81 | .ia = { 1, 0x00001FFE, 1 }, | |
82 | }; | |
83 | ||
84 | static const struct rpm_reg_parts rpm8660_smps_parts = { | |
85 | .request_len = 2, | |
86 | .mV = { 0, 0x00000FFF, 0 }, | |
87 | .ip = { 0, 0x00FFF000, 12 }, | |
88 | .fm = { 0, 0x03000000, 24 }, | |
89 | .pc = { 0, 0x3C000000, 26 }, | |
90 | .pf = { 0, 0xC0000000, 30 }, | |
91 | .pd = { 1, 0x00000001, 0 }, | |
92 | .ia = { 1, 0x00001FFE, 1 }, | |
93 | .freq = { 1, 0x001FE000, 13 }, | |
94 | .freq_clk_src = { 1, 0x00600000, 21 }, | |
95 | }; | |
96 | ||
97 | static const struct rpm_reg_parts rpm8660_switch_parts = { | |
98 | .request_len = 1, | |
99 | .enable_state = { 0, 0x00000001, 0 }, | |
100 | .pd = { 0, 0x00000002, 1 }, | |
101 | .pc = { 0, 0x0000003C, 2 }, | |
102 | .pf = { 0, 0x000000C0, 6 }, | |
103 | .hpm = { 0, 0x00000300, 8 }, | |
104 | }; | |
105 | ||
106 | static const struct rpm_reg_parts rpm8660_ncp_parts = { | |
107 | .request_len = 1, | |
108 | .mV = { 0, 0x00000FFF, 0 }, | |
109 | .enable_state = { 0, 0x00001000, 12 }, | |
110 | .comp_mode = { 0, 0x00002000, 13 }, | |
111 | .freq = { 0, 0x003FC000, 14 }, | |
112 | }; | |
113 | ||
114 | static const struct rpm_reg_parts rpm8960_ldo_parts = { | |
115 | .request_len = 2, | |
116 | .uV = { 0, 0x007FFFFF, 0 }, | |
117 | .pd = { 0, 0x00800000, 23 }, | |
118 | .pc = { 0, 0x0F000000, 24 }, | |
119 | .pf = { 0, 0xF0000000, 28 }, | |
120 | .ip = { 1, 0x000003FF, 0 }, | |
121 | .ia = { 1, 0x000FFC00, 10 }, | |
122 | .fm = { 1, 0x00700000, 20 }, | |
123 | }; | |
124 | ||
125 | static const struct rpm_reg_parts rpm8960_smps_parts = { | |
126 | .request_len = 2, | |
127 | .uV = { 0, 0x007FFFFF, 0 }, | |
128 | .pd = { 0, 0x00800000, 23 }, | |
129 | .pc = { 0, 0x0F000000, 24 }, | |
130 | .pf = { 0, 0xF0000000, 28 }, | |
131 | .ip = { 1, 0x000003FF, 0 }, | |
132 | .ia = { 1, 0x000FFC00, 10 }, | |
133 | .fm = { 1, 0x00700000, 20 }, | |
134 | .pm = { 1, 0x00800000, 23 }, | |
135 | .freq = { 1, 0x1F000000, 24 }, | |
136 | .freq_clk_src = { 1, 0x60000000, 29 }, | |
137 | }; | |
138 | ||
139 | static const struct rpm_reg_parts rpm8960_switch_parts = { | |
140 | .request_len = 1, | |
141 | .enable_state = { 0, 0x00000001, 0 }, | |
142 | .pd = { 0, 0x00000002, 1 }, | |
143 | .pc = { 0, 0x0000003C, 2 }, | |
144 | .pf = { 0, 0x000003C0, 6 }, | |
145 | .hpm = { 0, 0x00000C00, 10 }, | |
146 | }; | |
147 | ||
148 | static const struct rpm_reg_parts rpm8960_ncp_parts = { | |
149 | .request_len = 1, | |
150 | .uV = { 0, 0x007FFFFF, 0 }, | |
151 | .enable_state = { 0, 0x00800000, 23 }, | |
152 | .comp_mode = { 0, 0x01000000, 24 }, | |
153 | .freq = { 0, 0x3E000000, 25 }, | |
154 | }; | |
155 | ||
156 | /* | |
157 | * Physically available PMIC regulator voltage ranges | |
158 | */ | |
159 | static const struct regulator_linear_range pldo_ranges[] = { | |
160 | REGULATOR_LINEAR_RANGE( 750000, 0, 59, 12500), | |
161 | REGULATOR_LINEAR_RANGE(1500000, 60, 123, 25000), | |
162 | REGULATOR_LINEAR_RANGE(3100000, 124, 160, 50000), | |
163 | }; | |
164 | ||
165 | static const struct regulator_linear_range nldo_ranges[] = { | |
166 | REGULATOR_LINEAR_RANGE( 750000, 0, 63, 12500), | |
167 | }; | |
168 | ||
169 | static const struct regulator_linear_range nldo1200_ranges[] = { | |
170 | REGULATOR_LINEAR_RANGE( 375000, 0, 59, 6250), | |
171 | REGULATOR_LINEAR_RANGE( 750000, 60, 123, 12500), | |
172 | }; | |
173 | ||
174 | static const struct regulator_linear_range smps_ranges[] = { | |
175 | REGULATOR_LINEAR_RANGE( 375000, 0, 29, 12500), | |
176 | REGULATOR_LINEAR_RANGE( 750000, 30, 89, 12500), | |
177 | REGULATOR_LINEAR_RANGE(1500000, 90, 153, 25000), | |
178 | }; | |
179 | ||
180 | static const struct regulator_linear_range ftsmps_ranges[] = { | |
181 | REGULATOR_LINEAR_RANGE( 350000, 0, 6, 50000), | |
182 | REGULATOR_LINEAR_RANGE( 700000, 7, 63, 12500), | |
183 | REGULATOR_LINEAR_RANGE(1500000, 64, 100, 50000), | |
184 | }; | |
185 | ||
0f5bb5b5 JC |
186 | static const struct regulator_linear_range smb208_ranges[] = { |
187 | REGULATOR_LINEAR_RANGE( 375000, 0, 29, 12500), | |
188 | REGULATOR_LINEAR_RANGE( 750000, 30, 89, 12500), | |
189 | REGULATOR_LINEAR_RANGE(1500000, 90, 153, 25000), | |
190 | REGULATOR_LINEAR_RANGE(3100000, 154, 234, 25000), | |
191 | }; | |
192 | ||
2720386e BA |
193 | static const struct regulator_linear_range ncp_ranges[] = { |
194 | REGULATOR_LINEAR_RANGE(1500000, 0, 31, 50000), | |
195 | }; | |
196 | ||
197 | static int rpm_reg_write(struct qcom_rpm_reg *vreg, | |
198 | const struct request_member *req, | |
199 | const int value) | |
200 | { | |
201 | if (WARN_ON((value << req->shift) & ~req->mask)) | |
202 | return -EINVAL; | |
203 | ||
204 | vreg->val[req->word] &= ~req->mask; | |
205 | vreg->val[req->word] |= value << req->shift; | |
206 | ||
207 | return qcom_rpm_write(vreg->rpm, | |
208 | vreg->resource, | |
209 | vreg->val, | |
210 | vreg->parts->request_len); | |
211 | } | |
212 | ||
213 | static int rpm_reg_set_mV_sel(struct regulator_dev *rdev, | |
214 | unsigned selector) | |
215 | { | |
216 | struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); | |
217 | const struct rpm_reg_parts *parts = vreg->parts; | |
218 | const struct request_member *req = &parts->mV; | |
219 | int ret = 0; | |
220 | int uV; | |
221 | ||
222 | if (req->mask == 0) | |
223 | return -EINVAL; | |
224 | ||
225 | uV = regulator_list_voltage_linear_range(rdev, selector); | |
226 | if (uV < 0) | |
227 | return uV; | |
228 | ||
229 | mutex_lock(&vreg->lock); | |
2720386e | 230 | if (vreg->is_enabled) |
c6515d2f AL |
231 | ret = rpm_reg_write(vreg, req, uV / 1000); |
232 | ||
233 | if (!ret) | |
234 | vreg->uV = uV; | |
2720386e BA |
235 | mutex_unlock(&vreg->lock); |
236 | ||
237 | return ret; | |
238 | } | |
239 | ||
240 | static int rpm_reg_set_uV_sel(struct regulator_dev *rdev, | |
241 | unsigned selector) | |
242 | { | |
243 | struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); | |
244 | const struct rpm_reg_parts *parts = vreg->parts; | |
245 | const struct request_member *req = &parts->uV; | |
246 | int ret = 0; | |
247 | int uV; | |
248 | ||
249 | if (req->mask == 0) | |
250 | return -EINVAL; | |
251 | ||
252 | uV = regulator_list_voltage_linear_range(rdev, selector); | |
253 | if (uV < 0) | |
254 | return uV; | |
255 | ||
256 | mutex_lock(&vreg->lock); | |
2720386e | 257 | if (vreg->is_enabled) |
c6515d2f AL |
258 | ret = rpm_reg_write(vreg, req, uV); |
259 | ||
260 | if (!ret) | |
261 | vreg->uV = uV; | |
2720386e BA |
262 | mutex_unlock(&vreg->lock); |
263 | ||
264 | return ret; | |
265 | } | |
266 | ||
267 | static int rpm_reg_get_voltage(struct regulator_dev *rdev) | |
268 | { | |
269 | struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); | |
270 | ||
271 | return vreg->uV; | |
272 | } | |
273 | ||
274 | static int rpm_reg_mV_enable(struct regulator_dev *rdev) | |
275 | { | |
276 | struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); | |
277 | const struct rpm_reg_parts *parts = vreg->parts; | |
278 | const struct request_member *req = &parts->mV; | |
279 | int ret; | |
280 | ||
281 | if (req->mask == 0) | |
282 | return -EINVAL; | |
283 | ||
284 | mutex_lock(&vreg->lock); | |
285 | ret = rpm_reg_write(vreg, req, vreg->uV / 1000); | |
286 | if (!ret) | |
287 | vreg->is_enabled = 1; | |
288 | mutex_unlock(&vreg->lock); | |
289 | ||
290 | return ret; | |
291 | } | |
292 | ||
293 | static int rpm_reg_uV_enable(struct regulator_dev *rdev) | |
294 | { | |
295 | struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); | |
296 | const struct rpm_reg_parts *parts = vreg->parts; | |
297 | const struct request_member *req = &parts->uV; | |
298 | int ret; | |
299 | ||
300 | if (req->mask == 0) | |
301 | return -EINVAL; | |
302 | ||
303 | mutex_lock(&vreg->lock); | |
304 | ret = rpm_reg_write(vreg, req, vreg->uV); | |
305 | if (!ret) | |
306 | vreg->is_enabled = 1; | |
307 | mutex_unlock(&vreg->lock); | |
308 | ||
309 | return ret; | |
310 | } | |
311 | ||
312 | static int rpm_reg_switch_enable(struct regulator_dev *rdev) | |
313 | { | |
314 | struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); | |
315 | const struct rpm_reg_parts *parts = vreg->parts; | |
316 | const struct request_member *req = &parts->enable_state; | |
317 | int ret; | |
318 | ||
319 | if (req->mask == 0) | |
320 | return -EINVAL; | |
321 | ||
322 | mutex_lock(&vreg->lock); | |
323 | ret = rpm_reg_write(vreg, req, 1); | |
324 | if (!ret) | |
325 | vreg->is_enabled = 1; | |
326 | mutex_unlock(&vreg->lock); | |
327 | ||
328 | return ret; | |
329 | } | |
330 | ||
331 | static int rpm_reg_mV_disable(struct regulator_dev *rdev) | |
332 | { | |
333 | struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); | |
334 | const struct rpm_reg_parts *parts = vreg->parts; | |
335 | const struct request_member *req = &parts->mV; | |
336 | int ret; | |
337 | ||
338 | if (req->mask == 0) | |
339 | return -EINVAL; | |
340 | ||
341 | mutex_lock(&vreg->lock); | |
342 | ret = rpm_reg_write(vreg, req, 0); | |
343 | if (!ret) | |
344 | vreg->is_enabled = 0; | |
345 | mutex_unlock(&vreg->lock); | |
346 | ||
347 | return ret; | |
348 | } | |
349 | ||
350 | static int rpm_reg_uV_disable(struct regulator_dev *rdev) | |
351 | { | |
352 | struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); | |
353 | const struct rpm_reg_parts *parts = vreg->parts; | |
354 | const struct request_member *req = &parts->uV; | |
355 | int ret; | |
356 | ||
357 | if (req->mask == 0) | |
358 | return -EINVAL; | |
359 | ||
360 | mutex_lock(&vreg->lock); | |
361 | ret = rpm_reg_write(vreg, req, 0); | |
362 | if (!ret) | |
363 | vreg->is_enabled = 0; | |
364 | mutex_unlock(&vreg->lock); | |
365 | ||
366 | return ret; | |
367 | } | |
368 | ||
369 | static int rpm_reg_switch_disable(struct regulator_dev *rdev) | |
370 | { | |
371 | struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); | |
372 | const struct rpm_reg_parts *parts = vreg->parts; | |
373 | const struct request_member *req = &parts->enable_state; | |
374 | int ret; | |
375 | ||
376 | if (req->mask == 0) | |
377 | return -EINVAL; | |
378 | ||
379 | mutex_lock(&vreg->lock); | |
380 | ret = rpm_reg_write(vreg, req, 0); | |
381 | if (!ret) | |
382 | vreg->is_enabled = 0; | |
383 | mutex_unlock(&vreg->lock); | |
384 | ||
385 | return ret; | |
386 | } | |
387 | ||
388 | static int rpm_reg_is_enabled(struct regulator_dev *rdev) | |
389 | { | |
390 | struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); | |
391 | ||
392 | return vreg->is_enabled; | |
393 | } | |
394 | ||
395 | static struct regulator_ops uV_ops = { | |
396 | .list_voltage = regulator_list_voltage_linear_range, | |
397 | ||
398 | .set_voltage_sel = rpm_reg_set_uV_sel, | |
399 | .get_voltage = rpm_reg_get_voltage, | |
400 | ||
401 | .enable = rpm_reg_uV_enable, | |
402 | .disable = rpm_reg_uV_disable, | |
403 | .is_enabled = rpm_reg_is_enabled, | |
404 | }; | |
405 | ||
406 | static struct regulator_ops mV_ops = { | |
407 | .list_voltage = regulator_list_voltage_linear_range, | |
408 | ||
409 | .set_voltage_sel = rpm_reg_set_mV_sel, | |
410 | .get_voltage = rpm_reg_get_voltage, | |
411 | ||
412 | .enable = rpm_reg_mV_enable, | |
413 | .disable = rpm_reg_mV_disable, | |
414 | .is_enabled = rpm_reg_is_enabled, | |
415 | }; | |
416 | ||
417 | static struct regulator_ops switch_ops = { | |
418 | .enable = rpm_reg_switch_enable, | |
419 | .disable = rpm_reg_switch_disable, | |
420 | .is_enabled = rpm_reg_is_enabled, | |
421 | }; | |
422 | ||
423 | /* | |
424 | * PM8058 regulators | |
425 | */ | |
426 | static const struct qcom_rpm_reg pm8058_pldo = { | |
427 | .desc.linear_ranges = pldo_ranges, | |
428 | .desc.n_linear_ranges = ARRAY_SIZE(pldo_ranges), | |
429 | .desc.n_voltages = 161, | |
430 | .desc.ops = &mV_ops, | |
431 | .parts = &rpm8660_ldo_parts, | |
432 | .supports_force_mode_auto = false, | |
433 | .supports_force_mode_bypass = false, | |
434 | }; | |
435 | ||
436 | static const struct qcom_rpm_reg pm8058_nldo = { | |
437 | .desc.linear_ranges = nldo_ranges, | |
438 | .desc.n_linear_ranges = ARRAY_SIZE(nldo_ranges), | |
439 | .desc.n_voltages = 64, | |
440 | .desc.ops = &mV_ops, | |
441 | .parts = &rpm8660_ldo_parts, | |
442 | .supports_force_mode_auto = false, | |
443 | .supports_force_mode_bypass = false, | |
444 | }; | |
445 | ||
446 | static const struct qcom_rpm_reg pm8058_smps = { | |
447 | .desc.linear_ranges = smps_ranges, | |
448 | .desc.n_linear_ranges = ARRAY_SIZE(smps_ranges), | |
449 | .desc.n_voltages = 154, | |
450 | .desc.ops = &mV_ops, | |
451 | .parts = &rpm8660_smps_parts, | |
452 | .supports_force_mode_auto = false, | |
453 | .supports_force_mode_bypass = false, | |
454 | }; | |
455 | ||
456 | static const struct qcom_rpm_reg pm8058_ncp = { | |
457 | .desc.linear_ranges = ncp_ranges, | |
458 | .desc.n_linear_ranges = ARRAY_SIZE(ncp_ranges), | |
459 | .desc.n_voltages = 32, | |
460 | .desc.ops = &mV_ops, | |
461 | .parts = &rpm8660_ncp_parts, | |
462 | }; | |
463 | ||
464 | static const struct qcom_rpm_reg pm8058_switch = { | |
465 | .desc.ops = &switch_ops, | |
466 | .parts = &rpm8660_switch_parts, | |
467 | }; | |
468 | ||
469 | /* | |
470 | * PM8901 regulators | |
471 | */ | |
472 | static const struct qcom_rpm_reg pm8901_pldo = { | |
473 | .desc.linear_ranges = pldo_ranges, | |
474 | .desc.n_linear_ranges = ARRAY_SIZE(pldo_ranges), | |
475 | .desc.n_voltages = 161, | |
476 | .desc.ops = &mV_ops, | |
477 | .parts = &rpm8660_ldo_parts, | |
478 | .supports_force_mode_auto = false, | |
479 | .supports_force_mode_bypass = true, | |
480 | }; | |
481 | ||
482 | static const struct qcom_rpm_reg pm8901_nldo = { | |
483 | .desc.linear_ranges = nldo_ranges, | |
484 | .desc.n_linear_ranges = ARRAY_SIZE(nldo_ranges), | |
485 | .desc.n_voltages = 64, | |
486 | .desc.ops = &mV_ops, | |
487 | .parts = &rpm8660_ldo_parts, | |
488 | .supports_force_mode_auto = false, | |
489 | .supports_force_mode_bypass = true, | |
490 | }; | |
491 | ||
492 | static const struct qcom_rpm_reg pm8901_ftsmps = { | |
493 | .desc.linear_ranges = ftsmps_ranges, | |
494 | .desc.n_linear_ranges = ARRAY_SIZE(ftsmps_ranges), | |
495 | .desc.n_voltages = 101, | |
496 | .desc.ops = &mV_ops, | |
497 | .parts = &rpm8660_smps_parts, | |
498 | .supports_force_mode_auto = true, | |
499 | .supports_force_mode_bypass = false, | |
500 | }; | |
501 | ||
502 | static const struct qcom_rpm_reg pm8901_switch = { | |
503 | .desc.ops = &switch_ops, | |
504 | .parts = &rpm8660_switch_parts, | |
505 | }; | |
506 | ||
507 | /* | |
508 | * PM8921 regulators | |
509 | */ | |
510 | static const struct qcom_rpm_reg pm8921_pldo = { | |
511 | .desc.linear_ranges = pldo_ranges, | |
512 | .desc.n_linear_ranges = ARRAY_SIZE(pldo_ranges), | |
513 | .desc.n_voltages = 161, | |
514 | .desc.ops = &uV_ops, | |
515 | .parts = &rpm8960_ldo_parts, | |
516 | .supports_force_mode_auto = false, | |
517 | .supports_force_mode_bypass = true, | |
518 | }; | |
519 | ||
520 | static const struct qcom_rpm_reg pm8921_nldo = { | |
521 | .desc.linear_ranges = nldo_ranges, | |
522 | .desc.n_linear_ranges = ARRAY_SIZE(nldo_ranges), | |
523 | .desc.n_voltages = 64, | |
524 | .desc.ops = &uV_ops, | |
525 | .parts = &rpm8960_ldo_parts, | |
526 | .supports_force_mode_auto = false, | |
527 | .supports_force_mode_bypass = true, | |
528 | }; | |
529 | ||
530 | static const struct qcom_rpm_reg pm8921_nldo1200 = { | |
531 | .desc.linear_ranges = nldo1200_ranges, | |
532 | .desc.n_linear_ranges = ARRAY_SIZE(nldo1200_ranges), | |
533 | .desc.n_voltages = 124, | |
534 | .desc.ops = &uV_ops, | |
535 | .parts = &rpm8960_ldo_parts, | |
536 | .supports_force_mode_auto = false, | |
537 | .supports_force_mode_bypass = true, | |
538 | }; | |
539 | ||
540 | static const struct qcom_rpm_reg pm8921_smps = { | |
541 | .desc.linear_ranges = smps_ranges, | |
542 | .desc.n_linear_ranges = ARRAY_SIZE(smps_ranges), | |
543 | .desc.n_voltages = 154, | |
544 | .desc.ops = &uV_ops, | |
545 | .parts = &rpm8960_smps_parts, | |
546 | .supports_force_mode_auto = true, | |
547 | .supports_force_mode_bypass = false, | |
548 | }; | |
549 | ||
550 | static const struct qcom_rpm_reg pm8921_ftsmps = { | |
551 | .desc.linear_ranges = ftsmps_ranges, | |
552 | .desc.n_linear_ranges = ARRAY_SIZE(ftsmps_ranges), | |
553 | .desc.n_voltages = 101, | |
554 | .desc.ops = &uV_ops, | |
555 | .parts = &rpm8960_smps_parts, | |
556 | .supports_force_mode_auto = true, | |
557 | .supports_force_mode_bypass = false, | |
558 | }; | |
559 | ||
560 | static const struct qcom_rpm_reg pm8921_ncp = { | |
561 | .desc.linear_ranges = ncp_ranges, | |
562 | .desc.n_linear_ranges = ARRAY_SIZE(ncp_ranges), | |
563 | .desc.n_voltages = 32, | |
564 | .desc.ops = &uV_ops, | |
565 | .parts = &rpm8960_ncp_parts, | |
566 | }; | |
567 | ||
568 | static const struct qcom_rpm_reg pm8921_switch = { | |
569 | .desc.ops = &switch_ops, | |
570 | .parts = &rpm8960_switch_parts, | |
571 | }; | |
572 | ||
0f5bb5b5 JC |
573 | static const struct qcom_rpm_reg smb208_smps = { |
574 | .desc.linear_ranges = smb208_ranges, | |
575 | .desc.n_linear_ranges = ARRAY_SIZE(smb208_ranges), | |
576 | .desc.n_voltages = 235, | |
577 | .desc.ops = &uV_ops, | |
578 | .parts = &rpm8960_smps_parts, | |
579 | .supports_force_mode_auto = false, | |
580 | .supports_force_mode_bypass = false, | |
581 | }; | |
582 | ||
2720386e BA |
583 | static const struct of_device_id rpm_of_match[] = { |
584 | { .compatible = "qcom,rpm-pm8058-pldo", .data = &pm8058_pldo }, | |
585 | { .compatible = "qcom,rpm-pm8058-nldo", .data = &pm8058_nldo }, | |
586 | { .compatible = "qcom,rpm-pm8058-smps", .data = &pm8058_smps }, | |
587 | { .compatible = "qcom,rpm-pm8058-ncp", .data = &pm8058_ncp }, | |
588 | { .compatible = "qcom,rpm-pm8058-switch", .data = &pm8058_switch }, | |
589 | ||
590 | { .compatible = "qcom,rpm-pm8901-pldo", .data = &pm8901_pldo }, | |
591 | { .compatible = "qcom,rpm-pm8901-nldo", .data = &pm8901_nldo }, | |
592 | { .compatible = "qcom,rpm-pm8901-ftsmps", .data = &pm8901_ftsmps }, | |
593 | { .compatible = "qcom,rpm-pm8901-switch", .data = &pm8901_switch }, | |
594 | ||
595 | { .compatible = "qcom,rpm-pm8921-pldo", .data = &pm8921_pldo }, | |
596 | { .compatible = "qcom,rpm-pm8921-nldo", .data = &pm8921_nldo }, | |
597 | { .compatible = "qcom,rpm-pm8921-nldo1200", .data = &pm8921_nldo1200 }, | |
598 | { .compatible = "qcom,rpm-pm8921-smps", .data = &pm8921_smps }, | |
599 | { .compatible = "qcom,rpm-pm8921-ftsmps", .data = &pm8921_ftsmps }, | |
600 | { .compatible = "qcom,rpm-pm8921-ncp", .data = &pm8921_ncp }, | |
601 | { .compatible = "qcom,rpm-pm8921-switch", .data = &pm8921_switch }, | |
0f5bb5b5 JC |
602 | |
603 | { .compatible = "qcom,rpm-smb208", .data = &smb208_smps }, | |
2720386e BA |
604 | { } |
605 | }; | |
606 | MODULE_DEVICE_TABLE(of, rpm_of_match); | |
607 | ||
608 | static int rpm_reg_set(struct qcom_rpm_reg *vreg, | |
609 | const struct request_member *req, | |
610 | const int value) | |
611 | { | |
612 | if (req->mask == 0 || (value << req->shift) & ~req->mask) | |
613 | return -EINVAL; | |
614 | ||
615 | vreg->val[req->word] &= ~req->mask; | |
616 | vreg->val[req->word] |= value << req->shift; | |
617 | ||
618 | return 0; | |
619 | } | |
620 | ||
621 | static int rpm_reg_of_parse_freq(struct device *dev, struct qcom_rpm_reg *vreg) | |
622 | { | |
623 | static const int freq_table[] = { | |
624 | 19200000, 9600000, 6400000, 4800000, 3840000, 3200000, 2740000, | |
625 | 2400000, 2130000, 1920000, 1750000, 1600000, 1480000, 1370000, | |
626 | 1280000, 1200000, | |
627 | ||
628 | }; | |
629 | const char *key; | |
630 | u32 freq; | |
631 | int ret; | |
632 | int i; | |
633 | ||
634 | key = "qcom,switch-mode-frequency"; | |
635 | ret = of_property_read_u32(dev->of_node, key, &freq); | |
636 | if (ret) { | |
637 | dev_err(dev, "regulator requires %s property\n", key); | |
638 | return -EINVAL; | |
639 | } | |
640 | ||
641 | for (i = 0; i < ARRAY_SIZE(freq_table); i++) { | |
642 | if (freq == freq_table[i]) { | |
643 | rpm_reg_set(vreg, &vreg->parts->freq, i + 1); | |
644 | return 0; | |
645 | } | |
646 | } | |
647 | ||
648 | dev_err(dev, "invalid frequency %d\n", freq); | |
649 | return -EINVAL; | |
650 | } | |
651 | ||
652 | static int rpm_reg_probe(struct platform_device *pdev) | |
653 | { | |
654 | struct regulator_init_data *initdata; | |
655 | const struct qcom_rpm_reg *template; | |
656 | const struct of_device_id *match; | |
aad615c6 | 657 | struct regulator_config config = { }; |
2720386e BA |
658 | struct regulator_dev *rdev; |
659 | struct qcom_rpm_reg *vreg; | |
660 | const char *key; | |
661 | u32 force_mode; | |
662 | bool pwm; | |
663 | u32 val; | |
664 | int ret; | |
665 | ||
666 | match = of_match_device(rpm_of_match, &pdev->dev); | |
667 | template = match->data; | |
668 | ||
2720386e BA |
669 | vreg = devm_kmalloc(&pdev->dev, sizeof(*vreg), GFP_KERNEL); |
670 | if (!vreg) { | |
671 | dev_err(&pdev->dev, "failed to allocate vreg\n"); | |
672 | return -ENOMEM; | |
673 | } | |
674 | memcpy(vreg, template, sizeof(*vreg)); | |
675 | mutex_init(&vreg->lock); | |
676 | vreg->dev = &pdev->dev; | |
677 | vreg->desc.id = -1; | |
678 | vreg->desc.owner = THIS_MODULE; | |
679 | vreg->desc.type = REGULATOR_VOLTAGE; | |
680 | vreg->desc.name = pdev->dev.of_node->name; | |
00cea31f | 681 | vreg->desc.supply_name = "vin"; |
2720386e BA |
682 | |
683 | vreg->rpm = dev_get_drvdata(pdev->dev.parent); | |
684 | if (!vreg->rpm) { | |
685 | dev_err(&pdev->dev, "unable to retrieve handle to rpm\n"); | |
686 | return -ENODEV; | |
687 | } | |
688 | ||
072e78b1 JMC |
689 | initdata = of_get_regulator_init_data(&pdev->dev, pdev->dev.of_node, |
690 | &vreg->desc); | |
691 | if (!initdata) | |
692 | return -EINVAL; | |
693 | ||
2720386e BA |
694 | key = "reg"; |
695 | ret = of_property_read_u32(pdev->dev.of_node, key, &val); | |
696 | if (ret) { | |
697 | dev_err(&pdev->dev, "failed to read %s\n", key); | |
698 | return ret; | |
699 | } | |
700 | vreg->resource = val; | |
701 | ||
702 | if ((vreg->parts->uV.mask || vreg->parts->mV.mask) && | |
703 | (!initdata->constraints.min_uV || !initdata->constraints.max_uV)) { | |
704 | dev_err(&pdev->dev, "no voltage specified for regulator\n"); | |
705 | return -EINVAL; | |
706 | } | |
707 | ||
708 | key = "bias-pull-down"; | |
709 | if (of_property_read_bool(pdev->dev.of_node, key)) { | |
710 | ret = rpm_reg_set(vreg, &vreg->parts->pd, 1); | |
711 | if (ret) { | |
712 | dev_err(&pdev->dev, "%s is invalid", key); | |
713 | return ret; | |
714 | } | |
715 | } | |
716 | ||
717 | if (vreg->parts->freq.mask) { | |
718 | ret = rpm_reg_of_parse_freq(&pdev->dev, vreg); | |
719 | if (ret < 0) | |
720 | return ret; | |
721 | } | |
722 | ||
723 | if (vreg->parts->pm.mask) { | |
724 | key = "qcom,power-mode-hysteretic"; | |
725 | pwm = !of_property_read_bool(pdev->dev.of_node, key); | |
726 | ||
727 | ret = rpm_reg_set(vreg, &vreg->parts->pm, pwm); | |
728 | if (ret) { | |
729 | dev_err(&pdev->dev, "failed to set power mode\n"); | |
730 | return ret; | |
731 | } | |
732 | } | |
733 | ||
734 | if (vreg->parts->fm.mask) { | |
735 | force_mode = -1; | |
736 | ||
737 | key = "qcom,force-mode"; | |
738 | ret = of_property_read_u32(pdev->dev.of_node, key, &val); | |
739 | if (ret == -EINVAL) { | |
740 | val = QCOM_RPM_FORCE_MODE_NONE; | |
741 | } else if (ret < 0) { | |
742 | dev_err(&pdev->dev, "failed to read %s\n", key); | |
743 | return ret; | |
744 | } | |
745 | ||
746 | /* | |
747 | * If force-mode is encoded as 2 bits then the | |
748 | * possible register values are: | |
749 | * NONE, LPM, HPM | |
750 | * otherwise: | |
751 | * NONE, LPM, AUTO, HPM, BYPASS | |
752 | */ | |
753 | switch (val) { | |
754 | case QCOM_RPM_FORCE_MODE_NONE: | |
755 | force_mode = 0; | |
756 | break; | |
757 | case QCOM_RPM_FORCE_MODE_LPM: | |
758 | force_mode = 1; | |
759 | break; | |
760 | case QCOM_RPM_FORCE_MODE_HPM: | |
761 | if (FORCE_MODE_IS_2_BITS(vreg)) | |
762 | force_mode = 2; | |
763 | else | |
764 | force_mode = 3; | |
765 | break; | |
766 | case QCOM_RPM_FORCE_MODE_AUTO: | |
767 | if (vreg->supports_force_mode_auto) | |
768 | force_mode = 2; | |
769 | break; | |
770 | case QCOM_RPM_FORCE_MODE_BYPASS: | |
771 | if (vreg->supports_force_mode_bypass) | |
772 | force_mode = 4; | |
773 | break; | |
774 | } | |
775 | ||
a412ec27 | 776 | if (force_mode == -1) { |
2720386e BA |
777 | dev_err(&pdev->dev, "invalid force mode\n"); |
778 | return -EINVAL; | |
779 | } | |
780 | ||
781 | ret = rpm_reg_set(vreg, &vreg->parts->fm, force_mode); | |
782 | if (ret) { | |
783 | dev_err(&pdev->dev, "failed to set force mode\n"); | |
784 | return ret; | |
785 | } | |
786 | } | |
787 | ||
788 | config.dev = &pdev->dev; | |
789 | config.init_data = initdata; | |
790 | config.driver_data = vreg; | |
791 | config.of_node = pdev->dev.of_node; | |
792 | rdev = devm_regulator_register(&pdev->dev, &vreg->desc, &config); | |
793 | if (IS_ERR(rdev)) { | |
794 | dev_err(&pdev->dev, "can't register regulator\n"); | |
795 | return PTR_ERR(rdev); | |
796 | } | |
797 | ||
798 | return 0; | |
799 | } | |
800 | ||
801 | static struct platform_driver rpm_reg_driver = { | |
802 | .probe = rpm_reg_probe, | |
803 | .driver = { | |
804 | .name = "qcom_rpm_reg", | |
2720386e BA |
805 | .of_match_table = of_match_ptr(rpm_of_match), |
806 | }, | |
807 | }; | |
808 | ||
809 | static int __init rpm_reg_init(void) | |
810 | { | |
811 | return platform_driver_register(&rpm_reg_driver); | |
812 | } | |
813 | subsys_initcall(rpm_reg_init); | |
814 | ||
815 | static void __exit rpm_reg_exit(void) | |
816 | { | |
817 | platform_driver_unregister(&rpm_reg_driver); | |
818 | } | |
819 | module_exit(rpm_reg_exit) | |
820 | ||
821 | MODULE_DESCRIPTION("Qualcomm RPM regulator driver"); | |
822 | MODULE_LICENSE("GPL v2"); |