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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 | ||
186 | static const struct regulator_linear_range ncp_ranges[] = { | |
187 | REGULATOR_LINEAR_RANGE(1500000, 0, 31, 50000), | |
188 | }; | |
189 | ||
190 | static int rpm_reg_write(struct qcom_rpm_reg *vreg, | |
191 | const struct request_member *req, | |
192 | const int value) | |
193 | { | |
194 | if (WARN_ON((value << req->shift) & ~req->mask)) | |
195 | return -EINVAL; | |
196 | ||
197 | vreg->val[req->word] &= ~req->mask; | |
198 | vreg->val[req->word] |= value << req->shift; | |
199 | ||
200 | return qcom_rpm_write(vreg->rpm, | |
201 | vreg->resource, | |
202 | vreg->val, | |
203 | vreg->parts->request_len); | |
204 | } | |
205 | ||
206 | static int rpm_reg_set_mV_sel(struct regulator_dev *rdev, | |
207 | unsigned selector) | |
208 | { | |
209 | struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); | |
210 | const struct rpm_reg_parts *parts = vreg->parts; | |
211 | const struct request_member *req = &parts->mV; | |
212 | int ret = 0; | |
213 | int uV; | |
214 | ||
215 | if (req->mask == 0) | |
216 | return -EINVAL; | |
217 | ||
218 | uV = regulator_list_voltage_linear_range(rdev, selector); | |
219 | if (uV < 0) | |
220 | return uV; | |
221 | ||
222 | mutex_lock(&vreg->lock); | |
223 | vreg->uV = uV; | |
224 | if (vreg->is_enabled) | |
225 | ret = rpm_reg_write(vreg, req, vreg->uV / 1000); | |
226 | mutex_unlock(&vreg->lock); | |
227 | ||
228 | return ret; | |
229 | } | |
230 | ||
231 | static int rpm_reg_set_uV_sel(struct regulator_dev *rdev, | |
232 | unsigned selector) | |
233 | { | |
234 | struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); | |
235 | const struct rpm_reg_parts *parts = vreg->parts; | |
236 | const struct request_member *req = &parts->uV; | |
237 | int ret = 0; | |
238 | int uV; | |
239 | ||
240 | if (req->mask == 0) | |
241 | return -EINVAL; | |
242 | ||
243 | uV = regulator_list_voltage_linear_range(rdev, selector); | |
244 | if (uV < 0) | |
245 | return uV; | |
246 | ||
247 | mutex_lock(&vreg->lock); | |
248 | vreg->uV = uV; | |
249 | if (vreg->is_enabled) | |
250 | ret = rpm_reg_write(vreg, req, vreg->uV); | |
251 | mutex_unlock(&vreg->lock); | |
252 | ||
253 | return ret; | |
254 | } | |
255 | ||
256 | static int rpm_reg_get_voltage(struct regulator_dev *rdev) | |
257 | { | |
258 | struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); | |
259 | ||
260 | return vreg->uV; | |
261 | } | |
262 | ||
263 | static int rpm_reg_mV_enable(struct regulator_dev *rdev) | |
264 | { | |
265 | struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); | |
266 | const struct rpm_reg_parts *parts = vreg->parts; | |
267 | const struct request_member *req = &parts->mV; | |
268 | int ret; | |
269 | ||
270 | if (req->mask == 0) | |
271 | return -EINVAL; | |
272 | ||
273 | mutex_lock(&vreg->lock); | |
274 | ret = rpm_reg_write(vreg, req, vreg->uV / 1000); | |
275 | if (!ret) | |
276 | vreg->is_enabled = 1; | |
277 | mutex_unlock(&vreg->lock); | |
278 | ||
279 | return ret; | |
280 | } | |
281 | ||
282 | static int rpm_reg_uV_enable(struct regulator_dev *rdev) | |
283 | { | |
284 | struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); | |
285 | const struct rpm_reg_parts *parts = vreg->parts; | |
286 | const struct request_member *req = &parts->uV; | |
287 | int ret; | |
288 | ||
289 | if (req->mask == 0) | |
290 | return -EINVAL; | |
291 | ||
292 | mutex_lock(&vreg->lock); | |
293 | ret = rpm_reg_write(vreg, req, vreg->uV); | |
294 | if (!ret) | |
295 | vreg->is_enabled = 1; | |
296 | mutex_unlock(&vreg->lock); | |
297 | ||
298 | return ret; | |
299 | } | |
300 | ||
301 | static int rpm_reg_switch_enable(struct regulator_dev *rdev) | |
302 | { | |
303 | struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); | |
304 | const struct rpm_reg_parts *parts = vreg->parts; | |
305 | const struct request_member *req = &parts->enable_state; | |
306 | int ret; | |
307 | ||
308 | if (req->mask == 0) | |
309 | return -EINVAL; | |
310 | ||
311 | mutex_lock(&vreg->lock); | |
312 | ret = rpm_reg_write(vreg, req, 1); | |
313 | if (!ret) | |
314 | vreg->is_enabled = 1; | |
315 | mutex_unlock(&vreg->lock); | |
316 | ||
317 | return ret; | |
318 | } | |
319 | ||
320 | static int rpm_reg_mV_disable(struct regulator_dev *rdev) | |
321 | { | |
322 | struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); | |
323 | const struct rpm_reg_parts *parts = vreg->parts; | |
324 | const struct request_member *req = &parts->mV; | |
325 | int ret; | |
326 | ||
327 | if (req->mask == 0) | |
328 | return -EINVAL; | |
329 | ||
330 | mutex_lock(&vreg->lock); | |
331 | ret = rpm_reg_write(vreg, req, 0); | |
332 | if (!ret) | |
333 | vreg->is_enabled = 0; | |
334 | mutex_unlock(&vreg->lock); | |
335 | ||
336 | return ret; | |
337 | } | |
338 | ||
339 | static int rpm_reg_uV_disable(struct regulator_dev *rdev) | |
340 | { | |
341 | struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); | |
342 | const struct rpm_reg_parts *parts = vreg->parts; | |
343 | const struct request_member *req = &parts->uV; | |
344 | int ret; | |
345 | ||
346 | if (req->mask == 0) | |
347 | return -EINVAL; | |
348 | ||
349 | mutex_lock(&vreg->lock); | |
350 | ret = rpm_reg_write(vreg, req, 0); | |
351 | if (!ret) | |
352 | vreg->is_enabled = 0; | |
353 | mutex_unlock(&vreg->lock); | |
354 | ||
355 | return ret; | |
356 | } | |
357 | ||
358 | static int rpm_reg_switch_disable(struct regulator_dev *rdev) | |
359 | { | |
360 | struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); | |
361 | const struct rpm_reg_parts *parts = vreg->parts; | |
362 | const struct request_member *req = &parts->enable_state; | |
363 | int ret; | |
364 | ||
365 | if (req->mask == 0) | |
366 | return -EINVAL; | |
367 | ||
368 | mutex_lock(&vreg->lock); | |
369 | ret = rpm_reg_write(vreg, req, 0); | |
370 | if (!ret) | |
371 | vreg->is_enabled = 0; | |
372 | mutex_unlock(&vreg->lock); | |
373 | ||
374 | return ret; | |
375 | } | |
376 | ||
377 | static int rpm_reg_is_enabled(struct regulator_dev *rdev) | |
378 | { | |
379 | struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); | |
380 | ||
381 | return vreg->is_enabled; | |
382 | } | |
383 | ||
384 | static struct regulator_ops uV_ops = { | |
385 | .list_voltage = regulator_list_voltage_linear_range, | |
386 | ||
387 | .set_voltage_sel = rpm_reg_set_uV_sel, | |
388 | .get_voltage = rpm_reg_get_voltage, | |
389 | ||
390 | .enable = rpm_reg_uV_enable, | |
391 | .disable = rpm_reg_uV_disable, | |
392 | .is_enabled = rpm_reg_is_enabled, | |
393 | }; | |
394 | ||
395 | static struct regulator_ops mV_ops = { | |
396 | .list_voltage = regulator_list_voltage_linear_range, | |
397 | ||
398 | .set_voltage_sel = rpm_reg_set_mV_sel, | |
399 | .get_voltage = rpm_reg_get_voltage, | |
400 | ||
401 | .enable = rpm_reg_mV_enable, | |
402 | .disable = rpm_reg_mV_disable, | |
403 | .is_enabled = rpm_reg_is_enabled, | |
404 | }; | |
405 | ||
406 | static struct regulator_ops switch_ops = { | |
407 | .enable = rpm_reg_switch_enable, | |
408 | .disable = rpm_reg_switch_disable, | |
409 | .is_enabled = rpm_reg_is_enabled, | |
410 | }; | |
411 | ||
412 | /* | |
413 | * PM8058 regulators | |
414 | */ | |
415 | static const struct qcom_rpm_reg pm8058_pldo = { | |
416 | .desc.linear_ranges = pldo_ranges, | |
417 | .desc.n_linear_ranges = ARRAY_SIZE(pldo_ranges), | |
418 | .desc.n_voltages = 161, | |
419 | .desc.ops = &mV_ops, | |
420 | .parts = &rpm8660_ldo_parts, | |
421 | .supports_force_mode_auto = false, | |
422 | .supports_force_mode_bypass = false, | |
423 | }; | |
424 | ||
425 | static const struct qcom_rpm_reg pm8058_nldo = { | |
426 | .desc.linear_ranges = nldo_ranges, | |
427 | .desc.n_linear_ranges = ARRAY_SIZE(nldo_ranges), | |
428 | .desc.n_voltages = 64, | |
429 | .desc.ops = &mV_ops, | |
430 | .parts = &rpm8660_ldo_parts, | |
431 | .supports_force_mode_auto = false, | |
432 | .supports_force_mode_bypass = false, | |
433 | }; | |
434 | ||
435 | static const struct qcom_rpm_reg pm8058_smps = { | |
436 | .desc.linear_ranges = smps_ranges, | |
437 | .desc.n_linear_ranges = ARRAY_SIZE(smps_ranges), | |
438 | .desc.n_voltages = 154, | |
439 | .desc.ops = &mV_ops, | |
440 | .parts = &rpm8660_smps_parts, | |
441 | .supports_force_mode_auto = false, | |
442 | .supports_force_mode_bypass = false, | |
443 | }; | |
444 | ||
445 | static const struct qcom_rpm_reg pm8058_ncp = { | |
446 | .desc.linear_ranges = ncp_ranges, | |
447 | .desc.n_linear_ranges = ARRAY_SIZE(ncp_ranges), | |
448 | .desc.n_voltages = 32, | |
449 | .desc.ops = &mV_ops, | |
450 | .parts = &rpm8660_ncp_parts, | |
451 | }; | |
452 | ||
453 | static const struct qcom_rpm_reg pm8058_switch = { | |
454 | .desc.ops = &switch_ops, | |
455 | .parts = &rpm8660_switch_parts, | |
456 | }; | |
457 | ||
458 | /* | |
459 | * PM8901 regulators | |
460 | */ | |
461 | static const struct qcom_rpm_reg pm8901_pldo = { | |
462 | .desc.linear_ranges = pldo_ranges, | |
463 | .desc.n_linear_ranges = ARRAY_SIZE(pldo_ranges), | |
464 | .desc.n_voltages = 161, | |
465 | .desc.ops = &mV_ops, | |
466 | .parts = &rpm8660_ldo_parts, | |
467 | .supports_force_mode_auto = false, | |
468 | .supports_force_mode_bypass = true, | |
469 | }; | |
470 | ||
471 | static const struct qcom_rpm_reg pm8901_nldo = { | |
472 | .desc.linear_ranges = nldo_ranges, | |
473 | .desc.n_linear_ranges = ARRAY_SIZE(nldo_ranges), | |
474 | .desc.n_voltages = 64, | |
475 | .desc.ops = &mV_ops, | |
476 | .parts = &rpm8660_ldo_parts, | |
477 | .supports_force_mode_auto = false, | |
478 | .supports_force_mode_bypass = true, | |
479 | }; | |
480 | ||
481 | static const struct qcom_rpm_reg pm8901_ftsmps = { | |
482 | .desc.linear_ranges = ftsmps_ranges, | |
483 | .desc.n_linear_ranges = ARRAY_SIZE(ftsmps_ranges), | |
484 | .desc.n_voltages = 101, | |
485 | .desc.ops = &mV_ops, | |
486 | .parts = &rpm8660_smps_parts, | |
487 | .supports_force_mode_auto = true, | |
488 | .supports_force_mode_bypass = false, | |
489 | }; | |
490 | ||
491 | static const struct qcom_rpm_reg pm8901_switch = { | |
492 | .desc.ops = &switch_ops, | |
493 | .parts = &rpm8660_switch_parts, | |
494 | }; | |
495 | ||
496 | /* | |
497 | * PM8921 regulators | |
498 | */ | |
499 | static const struct qcom_rpm_reg pm8921_pldo = { | |
500 | .desc.linear_ranges = pldo_ranges, | |
501 | .desc.n_linear_ranges = ARRAY_SIZE(pldo_ranges), | |
502 | .desc.n_voltages = 161, | |
503 | .desc.ops = &uV_ops, | |
504 | .parts = &rpm8960_ldo_parts, | |
505 | .supports_force_mode_auto = false, | |
506 | .supports_force_mode_bypass = true, | |
507 | }; | |
508 | ||
509 | static const struct qcom_rpm_reg pm8921_nldo = { | |
510 | .desc.linear_ranges = nldo_ranges, | |
511 | .desc.n_linear_ranges = ARRAY_SIZE(nldo_ranges), | |
512 | .desc.n_voltages = 64, | |
513 | .desc.ops = &uV_ops, | |
514 | .parts = &rpm8960_ldo_parts, | |
515 | .supports_force_mode_auto = false, | |
516 | .supports_force_mode_bypass = true, | |
517 | }; | |
518 | ||
519 | static const struct qcom_rpm_reg pm8921_nldo1200 = { | |
520 | .desc.linear_ranges = nldo1200_ranges, | |
521 | .desc.n_linear_ranges = ARRAY_SIZE(nldo1200_ranges), | |
522 | .desc.n_voltages = 124, | |
523 | .desc.ops = &uV_ops, | |
524 | .parts = &rpm8960_ldo_parts, | |
525 | .supports_force_mode_auto = false, | |
526 | .supports_force_mode_bypass = true, | |
527 | }; | |
528 | ||
529 | static const struct qcom_rpm_reg pm8921_smps = { | |
530 | .desc.linear_ranges = smps_ranges, | |
531 | .desc.n_linear_ranges = ARRAY_SIZE(smps_ranges), | |
532 | .desc.n_voltages = 154, | |
533 | .desc.ops = &uV_ops, | |
534 | .parts = &rpm8960_smps_parts, | |
535 | .supports_force_mode_auto = true, | |
536 | .supports_force_mode_bypass = false, | |
537 | }; | |
538 | ||
539 | static const struct qcom_rpm_reg pm8921_ftsmps = { | |
540 | .desc.linear_ranges = ftsmps_ranges, | |
541 | .desc.n_linear_ranges = ARRAY_SIZE(ftsmps_ranges), | |
542 | .desc.n_voltages = 101, | |
543 | .desc.ops = &uV_ops, | |
544 | .parts = &rpm8960_smps_parts, | |
545 | .supports_force_mode_auto = true, | |
546 | .supports_force_mode_bypass = false, | |
547 | }; | |
548 | ||
549 | static const struct qcom_rpm_reg pm8921_ncp = { | |
550 | .desc.linear_ranges = ncp_ranges, | |
551 | .desc.n_linear_ranges = ARRAY_SIZE(ncp_ranges), | |
552 | .desc.n_voltages = 32, | |
553 | .desc.ops = &uV_ops, | |
554 | .parts = &rpm8960_ncp_parts, | |
555 | }; | |
556 | ||
557 | static const struct qcom_rpm_reg pm8921_switch = { | |
558 | .desc.ops = &switch_ops, | |
559 | .parts = &rpm8960_switch_parts, | |
560 | }; | |
561 | ||
562 | static const struct of_device_id rpm_of_match[] = { | |
563 | { .compatible = "qcom,rpm-pm8058-pldo", .data = &pm8058_pldo }, | |
564 | { .compatible = "qcom,rpm-pm8058-nldo", .data = &pm8058_nldo }, | |
565 | { .compatible = "qcom,rpm-pm8058-smps", .data = &pm8058_smps }, | |
566 | { .compatible = "qcom,rpm-pm8058-ncp", .data = &pm8058_ncp }, | |
567 | { .compatible = "qcom,rpm-pm8058-switch", .data = &pm8058_switch }, | |
568 | ||
569 | { .compatible = "qcom,rpm-pm8901-pldo", .data = &pm8901_pldo }, | |
570 | { .compatible = "qcom,rpm-pm8901-nldo", .data = &pm8901_nldo }, | |
571 | { .compatible = "qcom,rpm-pm8901-ftsmps", .data = &pm8901_ftsmps }, | |
572 | { .compatible = "qcom,rpm-pm8901-switch", .data = &pm8901_switch }, | |
573 | ||
574 | { .compatible = "qcom,rpm-pm8921-pldo", .data = &pm8921_pldo }, | |
575 | { .compatible = "qcom,rpm-pm8921-nldo", .data = &pm8921_nldo }, | |
576 | { .compatible = "qcom,rpm-pm8921-nldo1200", .data = &pm8921_nldo1200 }, | |
577 | { .compatible = "qcom,rpm-pm8921-smps", .data = &pm8921_smps }, | |
578 | { .compatible = "qcom,rpm-pm8921-ftsmps", .data = &pm8921_ftsmps }, | |
579 | { .compatible = "qcom,rpm-pm8921-ncp", .data = &pm8921_ncp }, | |
580 | { .compatible = "qcom,rpm-pm8921-switch", .data = &pm8921_switch }, | |
581 | { } | |
582 | }; | |
583 | MODULE_DEVICE_TABLE(of, rpm_of_match); | |
584 | ||
585 | static int rpm_reg_set(struct qcom_rpm_reg *vreg, | |
586 | const struct request_member *req, | |
587 | const int value) | |
588 | { | |
589 | if (req->mask == 0 || (value << req->shift) & ~req->mask) | |
590 | return -EINVAL; | |
591 | ||
592 | vreg->val[req->word] &= ~req->mask; | |
593 | vreg->val[req->word] |= value << req->shift; | |
594 | ||
595 | return 0; | |
596 | } | |
597 | ||
598 | static int rpm_reg_of_parse_freq(struct device *dev, struct qcom_rpm_reg *vreg) | |
599 | { | |
600 | static const int freq_table[] = { | |
601 | 19200000, 9600000, 6400000, 4800000, 3840000, 3200000, 2740000, | |
602 | 2400000, 2130000, 1920000, 1750000, 1600000, 1480000, 1370000, | |
603 | 1280000, 1200000, | |
604 | ||
605 | }; | |
606 | const char *key; | |
607 | u32 freq; | |
608 | int ret; | |
609 | int i; | |
610 | ||
611 | key = "qcom,switch-mode-frequency"; | |
612 | ret = of_property_read_u32(dev->of_node, key, &freq); | |
613 | if (ret) { | |
614 | dev_err(dev, "regulator requires %s property\n", key); | |
615 | return -EINVAL; | |
616 | } | |
617 | ||
618 | for (i = 0; i < ARRAY_SIZE(freq_table); i++) { | |
619 | if (freq == freq_table[i]) { | |
620 | rpm_reg_set(vreg, &vreg->parts->freq, i + 1); | |
621 | return 0; | |
622 | } | |
623 | } | |
624 | ||
625 | dev_err(dev, "invalid frequency %d\n", freq); | |
626 | return -EINVAL; | |
627 | } | |
628 | ||
629 | static int rpm_reg_probe(struct platform_device *pdev) | |
630 | { | |
631 | struct regulator_init_data *initdata; | |
632 | const struct qcom_rpm_reg *template; | |
633 | const struct of_device_id *match; | |
aad615c6 | 634 | struct regulator_config config = { }; |
2720386e BA |
635 | struct regulator_dev *rdev; |
636 | struct qcom_rpm_reg *vreg; | |
637 | const char *key; | |
638 | u32 force_mode; | |
639 | bool pwm; | |
640 | u32 val; | |
641 | int ret; | |
642 | ||
643 | match = of_match_device(rpm_of_match, &pdev->dev); | |
644 | template = match->data; | |
645 | ||
646 | initdata = of_get_regulator_init_data(&pdev->dev, pdev->dev.of_node); | |
647 | if (!initdata) | |
648 | return -EINVAL; | |
649 | ||
650 | vreg = devm_kmalloc(&pdev->dev, sizeof(*vreg), GFP_KERNEL); | |
651 | if (!vreg) { | |
652 | dev_err(&pdev->dev, "failed to allocate vreg\n"); | |
653 | return -ENOMEM; | |
654 | } | |
655 | memcpy(vreg, template, sizeof(*vreg)); | |
656 | mutex_init(&vreg->lock); | |
657 | vreg->dev = &pdev->dev; | |
658 | vreg->desc.id = -1; | |
659 | vreg->desc.owner = THIS_MODULE; | |
660 | vreg->desc.type = REGULATOR_VOLTAGE; | |
661 | vreg->desc.name = pdev->dev.of_node->name; | |
662 | ||
663 | vreg->rpm = dev_get_drvdata(pdev->dev.parent); | |
664 | if (!vreg->rpm) { | |
665 | dev_err(&pdev->dev, "unable to retrieve handle to rpm\n"); | |
666 | return -ENODEV; | |
667 | } | |
668 | ||
669 | key = "reg"; | |
670 | ret = of_property_read_u32(pdev->dev.of_node, key, &val); | |
671 | if (ret) { | |
672 | dev_err(&pdev->dev, "failed to read %s\n", key); | |
673 | return ret; | |
674 | } | |
675 | vreg->resource = val; | |
676 | ||
677 | if ((vreg->parts->uV.mask || vreg->parts->mV.mask) && | |
678 | (!initdata->constraints.min_uV || !initdata->constraints.max_uV)) { | |
679 | dev_err(&pdev->dev, "no voltage specified for regulator\n"); | |
680 | return -EINVAL; | |
681 | } | |
682 | ||
683 | key = "bias-pull-down"; | |
684 | if (of_property_read_bool(pdev->dev.of_node, key)) { | |
685 | ret = rpm_reg_set(vreg, &vreg->parts->pd, 1); | |
686 | if (ret) { | |
687 | dev_err(&pdev->dev, "%s is invalid", key); | |
688 | return ret; | |
689 | } | |
690 | } | |
691 | ||
692 | if (vreg->parts->freq.mask) { | |
693 | ret = rpm_reg_of_parse_freq(&pdev->dev, vreg); | |
694 | if (ret < 0) | |
695 | return ret; | |
696 | } | |
697 | ||
698 | if (vreg->parts->pm.mask) { | |
699 | key = "qcom,power-mode-hysteretic"; | |
700 | pwm = !of_property_read_bool(pdev->dev.of_node, key); | |
701 | ||
702 | ret = rpm_reg_set(vreg, &vreg->parts->pm, pwm); | |
703 | if (ret) { | |
704 | dev_err(&pdev->dev, "failed to set power mode\n"); | |
705 | return ret; | |
706 | } | |
707 | } | |
708 | ||
709 | if (vreg->parts->fm.mask) { | |
710 | force_mode = -1; | |
711 | ||
712 | key = "qcom,force-mode"; | |
713 | ret = of_property_read_u32(pdev->dev.of_node, key, &val); | |
714 | if (ret == -EINVAL) { | |
715 | val = QCOM_RPM_FORCE_MODE_NONE; | |
716 | } else if (ret < 0) { | |
717 | dev_err(&pdev->dev, "failed to read %s\n", key); | |
718 | return ret; | |
719 | } | |
720 | ||
721 | /* | |
722 | * If force-mode is encoded as 2 bits then the | |
723 | * possible register values are: | |
724 | * NONE, LPM, HPM | |
725 | * otherwise: | |
726 | * NONE, LPM, AUTO, HPM, BYPASS | |
727 | */ | |
728 | switch (val) { | |
729 | case QCOM_RPM_FORCE_MODE_NONE: | |
730 | force_mode = 0; | |
731 | break; | |
732 | case QCOM_RPM_FORCE_MODE_LPM: | |
733 | force_mode = 1; | |
734 | break; | |
735 | case QCOM_RPM_FORCE_MODE_HPM: | |
736 | if (FORCE_MODE_IS_2_BITS(vreg)) | |
737 | force_mode = 2; | |
738 | else | |
739 | force_mode = 3; | |
740 | break; | |
741 | case QCOM_RPM_FORCE_MODE_AUTO: | |
742 | if (vreg->supports_force_mode_auto) | |
743 | force_mode = 2; | |
744 | break; | |
745 | case QCOM_RPM_FORCE_MODE_BYPASS: | |
746 | if (vreg->supports_force_mode_bypass) | |
747 | force_mode = 4; | |
748 | break; | |
749 | } | |
750 | ||
751 | if (force_mode < 0) { | |
752 | dev_err(&pdev->dev, "invalid force mode\n"); | |
753 | return -EINVAL; | |
754 | } | |
755 | ||
756 | ret = rpm_reg_set(vreg, &vreg->parts->fm, force_mode); | |
757 | if (ret) { | |
758 | dev_err(&pdev->dev, "failed to set force mode\n"); | |
759 | return ret; | |
760 | } | |
761 | } | |
762 | ||
763 | config.dev = &pdev->dev; | |
764 | config.init_data = initdata; | |
765 | config.driver_data = vreg; | |
766 | config.of_node = pdev->dev.of_node; | |
767 | rdev = devm_regulator_register(&pdev->dev, &vreg->desc, &config); | |
768 | if (IS_ERR(rdev)) { | |
769 | dev_err(&pdev->dev, "can't register regulator\n"); | |
770 | return PTR_ERR(rdev); | |
771 | } | |
772 | ||
773 | return 0; | |
774 | } | |
775 | ||
776 | static struct platform_driver rpm_reg_driver = { | |
777 | .probe = rpm_reg_probe, | |
778 | .driver = { | |
779 | .name = "qcom_rpm_reg", | |
780 | .owner = THIS_MODULE, | |
781 | .of_match_table = of_match_ptr(rpm_of_match), | |
782 | }, | |
783 | }; | |
784 | ||
785 | static int __init rpm_reg_init(void) | |
786 | { | |
787 | return platform_driver_register(&rpm_reg_driver); | |
788 | } | |
789 | subsys_initcall(rpm_reg_init); | |
790 | ||
791 | static void __exit rpm_reg_exit(void) | |
792 | { | |
793 | platform_driver_unregister(&rpm_reg_driver); | |
794 | } | |
795 | module_exit(rpm_reg_exit) | |
796 | ||
797 | MODULE_DESCRIPTION("Qualcomm RPM regulator driver"); | |
798 | MODULE_LICENSE("GPL v2"); |