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da09155a MB |
1 | /* |
2 | * wm8350.c -- Voltage and current regulation for the Wolfson WM8350 PMIC | |
3 | * | |
4 | * Copyright 2007, 2008 Wolfson Microelectronics PLC. | |
5 | * | |
6 | * Author: Liam Girdwood | |
7 | * linux@wolfsonmicro.com | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify it | |
10 | * under the terms of the GNU General Public License as published by the | |
11 | * Free Software Foundation; either version 2 of the License, or (at your | |
12 | * option) any later version. | |
13 | */ | |
14 | ||
15 | #include <linux/module.h> | |
16 | #include <linux/moduleparam.h> | |
17 | #include <linux/init.h> | |
18 | #include <linux/bitops.h> | |
19 | #include <linux/err.h> | |
20 | #include <linux/i2c.h> | |
21 | #include <linux/mfd/wm8350/core.h> | |
22 | #include <linux/mfd/wm8350/pmic.h> | |
23 | #include <linux/platform_device.h> | |
24 | #include <linux/regulator/driver.h> | |
25 | #include <linux/regulator/machine.h> | |
26 | ||
27 | /* Microamps */ | |
28 | static const int isink_cur[] = { | |
29 | 4, | |
30 | 5, | |
31 | 6, | |
32 | 7, | |
33 | 8, | |
34 | 10, | |
35 | 11, | |
36 | 14, | |
37 | 16, | |
38 | 19, | |
39 | 23, | |
40 | 27, | |
41 | 32, | |
42 | 39, | |
43 | 46, | |
44 | 54, | |
45 | 65, | |
46 | 77, | |
47 | 92, | |
48 | 109, | |
49 | 130, | |
50 | 154, | |
51 | 183, | |
52 | 218, | |
53 | 259, | |
54 | 308, | |
55 | 367, | |
56 | 436, | |
57 | 518, | |
58 | 616, | |
59 | 733, | |
60 | 872, | |
61 | 1037, | |
62 | 1233, | |
63 | 1466, | |
64 | 1744, | |
65 | 2073, | |
66 | 2466, | |
67 | 2933, | |
68 | 3487, | |
69 | 4147, | |
70 | 4932, | |
71 | 5865, | |
72 | 6975, | |
73 | 8294, | |
74 | 9864, | |
75 | 11730, | |
76 | 13949, | |
77 | 16589, | |
78 | 19728, | |
79 | 23460, | |
80 | 27899, | |
81 | 33178, | |
82 | 39455, | |
83 | 46920, | |
84 | 55798, | |
85 | 66355, | |
86 | 78910, | |
87 | 93840, | |
88 | 111596, | |
89 | 132710, | |
90 | 157820, | |
91 | 187681, | |
92 | 223191 | |
93 | }; | |
94 | ||
95 | static int get_isink_val(int min_uA, int max_uA, u16 *setting) | |
96 | { | |
97 | int i; | |
98 | ||
99 | for (i = ARRAY_SIZE(isink_cur) - 1; i >= 0; i--) { | |
100 | if (min_uA <= isink_cur[i] && max_uA >= isink_cur[i]) { | |
101 | *setting = i; | |
102 | return 0; | |
103 | } | |
104 | } | |
105 | return -EINVAL; | |
106 | } | |
107 | ||
108 | static inline int wm8350_ldo_val_to_mvolts(unsigned int val) | |
109 | { | |
110 | if (val < 16) | |
111 | return (val * 50) + 900; | |
112 | else | |
113 | return ((val - 16) * 100) + 1800; | |
114 | ||
115 | } | |
116 | ||
117 | static inline unsigned int wm8350_ldo_mvolts_to_val(int mV) | |
118 | { | |
119 | if (mV < 1800) | |
120 | return (mV - 900) / 50; | |
121 | else | |
122 | return ((mV - 1800) / 100) + 16; | |
123 | } | |
124 | ||
125 | static inline int wm8350_dcdc_val_to_mvolts(unsigned int val) | |
126 | { | |
127 | return (val * 25) + 850; | |
128 | } | |
129 | ||
130 | static inline unsigned int wm8350_dcdc_mvolts_to_val(int mV) | |
131 | { | |
132 | return (mV - 850) / 25; | |
133 | } | |
134 | ||
135 | static int wm8350_isink_set_current(struct regulator_dev *rdev, int min_uA, | |
136 | int max_uA) | |
137 | { | |
138 | struct wm8350 *wm8350 = rdev_get_drvdata(rdev); | |
139 | int isink = rdev_get_id(rdev); | |
140 | u16 val, setting; | |
141 | int ret; | |
142 | ||
143 | ret = get_isink_val(min_uA, max_uA, &setting); | |
144 | if (ret != 0) | |
145 | return ret; | |
146 | ||
147 | switch (isink) { | |
148 | case WM8350_ISINK_A: | |
149 | val = wm8350_reg_read(wm8350, WM8350_CURRENT_SINK_DRIVER_A) & | |
150 | ~WM8350_CS1_ISEL_MASK; | |
151 | wm8350_reg_write(wm8350, WM8350_CURRENT_SINK_DRIVER_A, | |
152 | val | setting); | |
153 | break; | |
154 | case WM8350_ISINK_B: | |
155 | val = wm8350_reg_read(wm8350, WM8350_CURRENT_SINK_DRIVER_B) & | |
156 | ~WM8350_CS1_ISEL_MASK; | |
157 | wm8350_reg_write(wm8350, WM8350_CURRENT_SINK_DRIVER_B, | |
158 | val | setting); | |
159 | break; | |
160 | default: | |
161 | return -EINVAL; | |
162 | } | |
163 | ||
164 | return 0; | |
165 | } | |
166 | ||
167 | static int wm8350_isink_get_current(struct regulator_dev *rdev) | |
168 | { | |
169 | struct wm8350 *wm8350 = rdev_get_drvdata(rdev); | |
170 | int isink = rdev_get_id(rdev); | |
171 | u16 val; | |
172 | ||
173 | switch (isink) { | |
174 | case WM8350_ISINK_A: | |
175 | val = wm8350_reg_read(wm8350, WM8350_CURRENT_SINK_DRIVER_A) & | |
176 | WM8350_CS1_ISEL_MASK; | |
177 | break; | |
178 | case WM8350_ISINK_B: | |
179 | val = wm8350_reg_read(wm8350, WM8350_CURRENT_SINK_DRIVER_B) & | |
180 | WM8350_CS1_ISEL_MASK; | |
181 | break; | |
182 | default: | |
183 | return 0; | |
184 | } | |
185 | ||
186 | return (isink_cur[val] + 50) / 100; | |
187 | } | |
188 | ||
189 | /* turn on ISINK followed by DCDC */ | |
190 | static int wm8350_isink_enable(struct regulator_dev *rdev) | |
191 | { | |
192 | struct wm8350 *wm8350 = rdev_get_drvdata(rdev); | |
193 | int isink = rdev_get_id(rdev); | |
194 | ||
195 | switch (isink) { | |
196 | case WM8350_ISINK_A: | |
197 | switch (wm8350->pmic.isink_A_dcdc) { | |
198 | case WM8350_DCDC_2: | |
199 | case WM8350_DCDC_5: | |
200 | wm8350_set_bits(wm8350, WM8350_POWER_MGMT_7, | |
201 | WM8350_CS1_ENA); | |
202 | wm8350_set_bits(wm8350, WM8350_CSA_FLASH_CONTROL, | |
203 | WM8350_CS1_DRIVE); | |
204 | wm8350_set_bits(wm8350, WM8350_DCDC_LDO_REQUESTED, | |
205 | 1 << (wm8350->pmic.isink_A_dcdc - | |
206 | WM8350_DCDC_1)); | |
207 | break; | |
208 | default: | |
209 | return -EINVAL; | |
210 | } | |
211 | break; | |
212 | case WM8350_ISINK_B: | |
213 | switch (wm8350->pmic.isink_B_dcdc) { | |
214 | case WM8350_DCDC_2: | |
215 | case WM8350_DCDC_5: | |
216 | wm8350_set_bits(wm8350, WM8350_POWER_MGMT_7, | |
217 | WM8350_CS2_ENA); | |
218 | wm8350_set_bits(wm8350, WM8350_CSB_FLASH_CONTROL, | |
219 | WM8350_CS2_DRIVE); | |
220 | wm8350_set_bits(wm8350, WM8350_DCDC_LDO_REQUESTED, | |
221 | 1 << (wm8350->pmic.isink_B_dcdc - | |
222 | WM8350_DCDC_1)); | |
223 | break; | |
224 | default: | |
225 | return -EINVAL; | |
226 | } | |
227 | break; | |
228 | default: | |
229 | return -EINVAL; | |
230 | } | |
231 | return 0; | |
232 | } | |
233 | ||
234 | static int wm8350_isink_disable(struct regulator_dev *rdev) | |
235 | { | |
236 | struct wm8350 *wm8350 = rdev_get_drvdata(rdev); | |
237 | int isink = rdev_get_id(rdev); | |
238 | ||
239 | switch (isink) { | |
240 | case WM8350_ISINK_A: | |
241 | switch (wm8350->pmic.isink_A_dcdc) { | |
242 | case WM8350_DCDC_2: | |
243 | case WM8350_DCDC_5: | |
244 | wm8350_clear_bits(wm8350, WM8350_DCDC_LDO_REQUESTED, | |
245 | 1 << (wm8350->pmic.isink_A_dcdc - | |
246 | WM8350_DCDC_1)); | |
247 | wm8350_clear_bits(wm8350, WM8350_POWER_MGMT_7, | |
248 | WM8350_CS1_ENA); | |
249 | break; | |
250 | default: | |
251 | return -EINVAL; | |
252 | } | |
253 | break; | |
254 | case WM8350_ISINK_B: | |
255 | switch (wm8350->pmic.isink_B_dcdc) { | |
256 | case WM8350_DCDC_2: | |
257 | case WM8350_DCDC_5: | |
258 | wm8350_clear_bits(wm8350, WM8350_DCDC_LDO_REQUESTED, | |
259 | 1 << (wm8350->pmic.isink_B_dcdc - | |
260 | WM8350_DCDC_1)); | |
261 | wm8350_clear_bits(wm8350, WM8350_POWER_MGMT_7, | |
262 | WM8350_CS2_ENA); | |
263 | break; | |
264 | default: | |
265 | return -EINVAL; | |
266 | } | |
267 | break; | |
268 | default: | |
269 | return -EINVAL; | |
270 | } | |
271 | return 0; | |
272 | } | |
273 | ||
274 | static int wm8350_isink_is_enabled(struct regulator_dev *rdev) | |
275 | { | |
276 | struct wm8350 *wm8350 = rdev_get_drvdata(rdev); | |
277 | int isink = rdev_get_id(rdev); | |
278 | ||
279 | switch (isink) { | |
280 | case WM8350_ISINK_A: | |
281 | return wm8350_reg_read(wm8350, WM8350_CURRENT_SINK_DRIVER_A) & | |
282 | 0x8000; | |
283 | case WM8350_ISINK_B: | |
284 | return wm8350_reg_read(wm8350, WM8350_CURRENT_SINK_DRIVER_B) & | |
285 | 0x8000; | |
286 | } | |
287 | return -EINVAL; | |
288 | } | |
289 | ||
290 | int wm8350_isink_set_flash(struct wm8350 *wm8350, int isink, u16 mode, | |
291 | u16 trigger, u16 duration, u16 on_ramp, u16 off_ramp, | |
292 | u16 drive) | |
293 | { | |
294 | switch (isink) { | |
295 | case WM8350_ISINK_A: | |
296 | wm8350_reg_write(wm8350, WM8350_CSA_FLASH_CONTROL, | |
297 | (mode ? WM8350_CS1_FLASH_MODE : 0) | | |
298 | (trigger ? WM8350_CS1_TRIGSRC : 0) | | |
299 | duration | on_ramp | off_ramp | drive); | |
300 | break; | |
301 | case WM8350_ISINK_B: | |
302 | wm8350_reg_write(wm8350, WM8350_CSB_FLASH_CONTROL, | |
303 | (mode ? WM8350_CS2_FLASH_MODE : 0) | | |
304 | (trigger ? WM8350_CS2_TRIGSRC : 0) | | |
305 | duration | on_ramp | off_ramp | drive); | |
306 | break; | |
307 | default: | |
308 | return -EINVAL; | |
309 | } | |
310 | return 0; | |
311 | } | |
312 | EXPORT_SYMBOL_GPL(wm8350_isink_set_flash); | |
313 | ||
314 | static int wm8350_dcdc_set_voltage(struct regulator_dev *rdev, int min_uV, | |
315 | int max_uV) | |
316 | { | |
317 | struct wm8350 *wm8350 = rdev_get_drvdata(rdev); | |
318 | int volt_reg, dcdc = rdev_get_id(rdev), mV, | |
319 | min_mV = min_uV / 1000, max_mV = max_uV / 1000; | |
320 | u16 val; | |
321 | ||
322 | if (min_mV < 850 || min_mV > 4025) | |
323 | return -EINVAL; | |
324 | if (max_mV < 850 || max_mV > 4025) | |
325 | return -EINVAL; | |
326 | ||
327 | /* step size is 25mV */ | |
328 | mV = (min_mV - 826) / 25; | |
329 | if (wm8350_dcdc_val_to_mvolts(mV) > max_mV) | |
330 | return -EINVAL; | |
331 | BUG_ON(wm8350_dcdc_val_to_mvolts(mV) < min_mV); | |
332 | ||
333 | switch (dcdc) { | |
334 | case WM8350_DCDC_1: | |
335 | volt_reg = WM8350_DCDC1_CONTROL; | |
336 | break; | |
337 | case WM8350_DCDC_3: | |
338 | volt_reg = WM8350_DCDC3_CONTROL; | |
339 | break; | |
340 | case WM8350_DCDC_4: | |
341 | volt_reg = WM8350_DCDC4_CONTROL; | |
342 | break; | |
343 | case WM8350_DCDC_6: | |
344 | volt_reg = WM8350_DCDC6_CONTROL; | |
345 | break; | |
346 | case WM8350_DCDC_2: | |
347 | case WM8350_DCDC_5: | |
348 | default: | |
349 | return -EINVAL; | |
350 | } | |
351 | ||
352 | /* all DCDCs have same mV bits */ | |
353 | val = wm8350_reg_read(wm8350, volt_reg) & ~WM8350_DC1_VSEL_MASK; | |
354 | wm8350_reg_write(wm8350, volt_reg, val | mV); | |
355 | return 0; | |
356 | } | |
357 | ||
358 | static int wm8350_dcdc_get_voltage(struct regulator_dev *rdev) | |
359 | { | |
360 | struct wm8350 *wm8350 = rdev_get_drvdata(rdev); | |
361 | int volt_reg, dcdc = rdev_get_id(rdev); | |
362 | u16 val; | |
363 | ||
364 | switch (dcdc) { | |
365 | case WM8350_DCDC_1: | |
366 | volt_reg = WM8350_DCDC1_CONTROL; | |
367 | break; | |
368 | case WM8350_DCDC_3: | |
369 | volt_reg = WM8350_DCDC3_CONTROL; | |
370 | break; | |
371 | case WM8350_DCDC_4: | |
372 | volt_reg = WM8350_DCDC4_CONTROL; | |
373 | break; | |
374 | case WM8350_DCDC_6: | |
375 | volt_reg = WM8350_DCDC6_CONTROL; | |
376 | break; | |
377 | case WM8350_DCDC_2: | |
378 | case WM8350_DCDC_5: | |
379 | default: | |
380 | return -EINVAL; | |
381 | } | |
382 | ||
383 | /* all DCDCs have same mV bits */ | |
384 | val = wm8350_reg_read(wm8350, volt_reg) & WM8350_DC1_VSEL_MASK; | |
385 | return wm8350_dcdc_val_to_mvolts(val) * 1000; | |
386 | } | |
387 | ||
388 | static int wm8350_dcdc_set_suspend_voltage(struct regulator_dev *rdev, int uV) | |
389 | { | |
390 | struct wm8350 *wm8350 = rdev_get_drvdata(rdev); | |
391 | int volt_reg, mV = uV / 1000, dcdc = rdev_get_id(rdev); | |
392 | u16 val; | |
393 | ||
394 | dev_dbg(wm8350->dev, "%s %d mV %d\n", __func__, dcdc, mV); | |
395 | ||
396 | if (mV && (mV < 850 || mV > 4025)) { | |
397 | dev_err(wm8350->dev, | |
398 | "DCDC%d suspend voltage %d mV out of range\n", | |
399 | dcdc, mV); | |
400 | return -EINVAL; | |
401 | } | |
402 | if (mV == 0) | |
403 | mV = 850; | |
404 | ||
405 | switch (dcdc) { | |
406 | case WM8350_DCDC_1: | |
407 | volt_reg = WM8350_DCDC1_LOW_POWER; | |
408 | break; | |
409 | case WM8350_DCDC_3: | |
410 | volt_reg = WM8350_DCDC3_LOW_POWER; | |
411 | break; | |
412 | case WM8350_DCDC_4: | |
413 | volt_reg = WM8350_DCDC4_LOW_POWER; | |
414 | break; | |
415 | case WM8350_DCDC_6: | |
416 | volt_reg = WM8350_DCDC6_LOW_POWER; | |
417 | break; | |
418 | case WM8350_DCDC_2: | |
419 | case WM8350_DCDC_5: | |
420 | default: | |
421 | return -EINVAL; | |
422 | } | |
423 | ||
424 | /* all DCDCs have same mV bits */ | |
425 | val = wm8350_reg_read(wm8350, volt_reg) & ~WM8350_DC1_VSEL_MASK; | |
426 | wm8350_reg_write(wm8350, volt_reg, | |
427 | val | wm8350_dcdc_mvolts_to_val(mV)); | |
428 | return 0; | |
429 | } | |
430 | ||
431 | static int wm8350_dcdc_set_suspend_enable(struct regulator_dev *rdev) | |
432 | { | |
433 | struct wm8350 *wm8350 = rdev_get_drvdata(rdev); | |
434 | int dcdc = rdev_get_id(rdev); | |
435 | u16 val; | |
436 | ||
437 | switch (dcdc) { | |
438 | case WM8350_DCDC_1: | |
439 | val = wm8350_reg_read(wm8350, WM8350_DCDC1_LOW_POWER) | |
440 | & ~WM8350_DCDC_HIB_MODE_MASK; | |
441 | wm8350_reg_write(wm8350, WM8350_DCDC1_LOW_POWER, | |
442 | wm8350->pmic.dcdc1_hib_mode); | |
443 | break; | |
444 | case WM8350_DCDC_3: | |
445 | val = wm8350_reg_read(wm8350, WM8350_DCDC3_LOW_POWER) | |
446 | & ~WM8350_DCDC_HIB_MODE_MASK; | |
447 | wm8350_reg_write(wm8350, WM8350_DCDC3_LOW_POWER, | |
448 | wm8350->pmic.dcdc3_hib_mode); | |
449 | break; | |
450 | case WM8350_DCDC_4: | |
451 | val = wm8350_reg_read(wm8350, WM8350_DCDC4_LOW_POWER) | |
452 | & ~WM8350_DCDC_HIB_MODE_MASK; | |
453 | wm8350_reg_write(wm8350, WM8350_DCDC4_LOW_POWER, | |
454 | wm8350->pmic.dcdc4_hib_mode); | |
455 | break; | |
456 | case WM8350_DCDC_6: | |
457 | val = wm8350_reg_read(wm8350, WM8350_DCDC6_LOW_POWER) | |
458 | & ~WM8350_DCDC_HIB_MODE_MASK; | |
459 | wm8350_reg_write(wm8350, WM8350_DCDC6_LOW_POWER, | |
460 | wm8350->pmic.dcdc6_hib_mode); | |
461 | break; | |
462 | case WM8350_DCDC_2: | |
463 | case WM8350_DCDC_5: | |
464 | default: | |
465 | return -EINVAL; | |
466 | } | |
467 | ||
468 | return 0; | |
469 | } | |
470 | ||
471 | static int wm8350_dcdc_set_suspend_disable(struct regulator_dev *rdev) | |
472 | { | |
473 | struct wm8350 *wm8350 = rdev_get_drvdata(rdev); | |
474 | int dcdc = rdev_get_id(rdev); | |
475 | u16 val; | |
476 | ||
477 | switch (dcdc) { | |
478 | case WM8350_DCDC_1: | |
479 | val = wm8350_reg_read(wm8350, WM8350_DCDC1_LOW_POWER); | |
480 | wm8350->pmic.dcdc1_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK; | |
481 | wm8350_reg_write(wm8350, WM8350_DCDC1_LOW_POWER, | |
482 | WM8350_DCDC_HIB_MODE_DIS); | |
483 | break; | |
484 | case WM8350_DCDC_3: | |
485 | val = wm8350_reg_read(wm8350, WM8350_DCDC3_LOW_POWER); | |
486 | wm8350->pmic.dcdc3_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK; | |
487 | wm8350_reg_write(wm8350, WM8350_DCDC3_LOW_POWER, | |
488 | WM8350_DCDC_HIB_MODE_DIS); | |
489 | break; | |
490 | case WM8350_DCDC_4: | |
491 | val = wm8350_reg_read(wm8350, WM8350_DCDC4_LOW_POWER); | |
492 | wm8350->pmic.dcdc4_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK; | |
493 | wm8350_reg_write(wm8350, WM8350_DCDC4_LOW_POWER, | |
494 | WM8350_DCDC_HIB_MODE_DIS); | |
495 | break; | |
496 | case WM8350_DCDC_6: | |
497 | val = wm8350_reg_read(wm8350, WM8350_DCDC6_LOW_POWER); | |
498 | wm8350->pmic.dcdc6_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK; | |
499 | wm8350_reg_write(wm8350, WM8350_DCDC6_LOW_POWER, | |
500 | WM8350_DCDC_HIB_MODE_DIS); | |
501 | break; | |
502 | case WM8350_DCDC_2: | |
503 | case WM8350_DCDC_5: | |
504 | default: | |
505 | return -EINVAL; | |
506 | } | |
507 | ||
508 | return 0; | |
509 | } | |
510 | ||
511 | static int wm8350_dcdc25_set_suspend_enable(struct regulator_dev *rdev) | |
512 | { | |
513 | struct wm8350 *wm8350 = rdev_get_drvdata(rdev); | |
514 | int dcdc = rdev_get_id(rdev); | |
515 | u16 val; | |
516 | ||
517 | switch (dcdc) { | |
518 | case WM8350_DCDC_2: | |
519 | val = wm8350_reg_read(wm8350, WM8350_DCDC2_CONTROL) | |
520 | & ~WM8350_DC2_HIB_MODE_MASK; | |
521 | wm8350_reg_write(wm8350, WM8350_DCDC2_CONTROL, val | | |
522 | WM8350_DC2_HIB_MODE_ACTIVE); | |
523 | break; | |
524 | case WM8350_DCDC_5: | |
525 | val = wm8350_reg_read(wm8350, WM8350_DCDC5_CONTROL) | |
526 | & ~WM8350_DC2_HIB_MODE_MASK; | |
527 | wm8350_reg_write(wm8350, WM8350_DCDC5_CONTROL, val | | |
528 | WM8350_DC5_HIB_MODE_ACTIVE); | |
529 | break; | |
530 | default: | |
531 | return -EINVAL; | |
532 | } | |
533 | return 0; | |
534 | } | |
535 | ||
536 | static int wm8350_dcdc25_set_suspend_disable(struct regulator_dev *rdev) | |
537 | { | |
538 | struct wm8350 *wm8350 = rdev_get_drvdata(rdev); | |
539 | int dcdc = rdev_get_id(rdev); | |
540 | u16 val; | |
541 | ||
542 | switch (dcdc) { | |
543 | case WM8350_DCDC_2: | |
544 | val = wm8350_reg_read(wm8350, WM8350_DCDC2_CONTROL) | |
545 | & ~WM8350_DC2_HIB_MODE_MASK; | |
546 | wm8350_reg_write(wm8350, WM8350_DCDC2_CONTROL, val | | |
547 | WM8350_DC2_HIB_MODE_DISABLE); | |
548 | break; | |
549 | case WM8350_DCDC_5: | |
550 | val = wm8350_reg_read(wm8350, WM8350_DCDC5_CONTROL) | |
551 | & ~WM8350_DC2_HIB_MODE_MASK; | |
552 | wm8350_reg_write(wm8350, WM8350_DCDC5_CONTROL, val | | |
553 | WM8350_DC2_HIB_MODE_DISABLE); | |
554 | break; | |
555 | default: | |
556 | return -EINVAL; | |
557 | } | |
558 | return 0; | |
559 | } | |
560 | ||
561 | static int wm8350_dcdc_set_suspend_mode(struct regulator_dev *rdev, | |
562 | unsigned int mode) | |
563 | { | |
564 | struct wm8350 *wm8350 = rdev_get_drvdata(rdev); | |
565 | int dcdc = rdev_get_id(rdev); | |
566 | u16 *hib_mode; | |
567 | ||
568 | switch (dcdc) { | |
569 | case WM8350_DCDC_1: | |
570 | hib_mode = &wm8350->pmic.dcdc1_hib_mode; | |
571 | break; | |
572 | case WM8350_DCDC_3: | |
573 | hib_mode = &wm8350->pmic.dcdc3_hib_mode; | |
574 | break; | |
575 | case WM8350_DCDC_4: | |
576 | hib_mode = &wm8350->pmic.dcdc4_hib_mode; | |
577 | break; | |
578 | case WM8350_DCDC_6: | |
579 | hib_mode = &wm8350->pmic.dcdc6_hib_mode; | |
580 | break; | |
581 | case WM8350_DCDC_2: | |
582 | case WM8350_DCDC_5: | |
583 | default: | |
584 | return -EINVAL; | |
585 | } | |
586 | ||
587 | switch (mode) { | |
588 | case REGULATOR_MODE_NORMAL: | |
589 | *hib_mode = WM8350_DCDC_HIB_MODE_IMAGE; | |
590 | break; | |
591 | case REGULATOR_MODE_IDLE: | |
592 | *hib_mode = WM8350_DCDC_HIB_MODE_STANDBY; | |
593 | break; | |
594 | case REGULATOR_MODE_STANDBY: | |
595 | *hib_mode = WM8350_DCDC_HIB_MODE_LDO_IM; | |
596 | break; | |
597 | default: | |
598 | return -EINVAL; | |
599 | } | |
600 | ||
601 | return 0; | |
602 | } | |
603 | ||
604 | static int wm8350_ldo_set_suspend_voltage(struct regulator_dev *rdev, int uV) | |
605 | { | |
606 | struct wm8350 *wm8350 = rdev_get_drvdata(rdev); | |
607 | int volt_reg, mV = uV / 1000, ldo = rdev_get_id(rdev); | |
608 | u16 val; | |
609 | ||
610 | dev_dbg(wm8350->dev, "%s %d mV %d\n", __func__, ldo, mV); | |
611 | ||
612 | if (mV < 900 || mV > 3300) { | |
613 | dev_err(wm8350->dev, "LDO%d voltage %d mV out of range\n", | |
614 | ldo, mV); | |
615 | return -EINVAL; | |
616 | } | |
617 | ||
618 | switch (ldo) { | |
619 | case WM8350_LDO_1: | |
620 | volt_reg = WM8350_LDO1_LOW_POWER; | |
621 | break; | |
622 | case WM8350_LDO_2: | |
623 | volt_reg = WM8350_LDO2_LOW_POWER; | |
624 | break; | |
625 | case WM8350_LDO_3: | |
626 | volt_reg = WM8350_LDO3_LOW_POWER; | |
627 | break; | |
628 | case WM8350_LDO_4: | |
629 | volt_reg = WM8350_LDO4_LOW_POWER; | |
630 | break; | |
631 | default: | |
632 | return -EINVAL; | |
633 | } | |
634 | ||
635 | /* all LDOs have same mV bits */ | |
636 | val = wm8350_reg_read(wm8350, volt_reg) & ~WM8350_LDO1_VSEL_MASK; | |
637 | wm8350_reg_write(wm8350, volt_reg, | |
638 | val | wm8350_ldo_mvolts_to_val(mV)); | |
639 | return 0; | |
640 | } | |
641 | ||
642 | static int wm8350_ldo_set_suspend_enable(struct regulator_dev *rdev) | |
643 | { | |
644 | struct wm8350 *wm8350 = rdev_get_drvdata(rdev); | |
645 | int volt_reg, ldo = rdev_get_id(rdev); | |
646 | u16 val; | |
647 | ||
648 | switch (ldo) { | |
649 | case WM8350_LDO_1: | |
650 | volt_reg = WM8350_LDO1_LOW_POWER; | |
651 | break; | |
652 | case WM8350_LDO_2: | |
653 | volt_reg = WM8350_LDO2_LOW_POWER; | |
654 | break; | |
655 | case WM8350_LDO_3: | |
656 | volt_reg = WM8350_LDO3_LOW_POWER; | |
657 | break; | |
658 | case WM8350_LDO_4: | |
659 | volt_reg = WM8350_LDO4_LOW_POWER; | |
660 | break; | |
661 | default: | |
662 | return -EINVAL; | |
663 | } | |
664 | ||
665 | /* all LDOs have same mV bits */ | |
666 | val = wm8350_reg_read(wm8350, volt_reg) & ~WM8350_LDO1_HIB_MODE_MASK; | |
667 | wm8350_reg_write(wm8350, volt_reg, val); | |
668 | return 0; | |
669 | } | |
670 | ||
671 | static int wm8350_ldo_set_suspend_disable(struct regulator_dev *rdev) | |
672 | { | |
673 | struct wm8350 *wm8350 = rdev_get_drvdata(rdev); | |
674 | int volt_reg, ldo = rdev_get_id(rdev); | |
675 | u16 val; | |
676 | ||
677 | switch (ldo) { | |
678 | case WM8350_LDO_1: | |
679 | volt_reg = WM8350_LDO1_LOW_POWER; | |
680 | break; | |
681 | case WM8350_LDO_2: | |
682 | volt_reg = WM8350_LDO2_LOW_POWER; | |
683 | break; | |
684 | case WM8350_LDO_3: | |
685 | volt_reg = WM8350_LDO3_LOW_POWER; | |
686 | break; | |
687 | case WM8350_LDO_4: | |
688 | volt_reg = WM8350_LDO4_LOW_POWER; | |
689 | break; | |
690 | default: | |
691 | return -EINVAL; | |
692 | } | |
693 | ||
694 | /* all LDOs have same mV bits */ | |
695 | val = wm8350_reg_read(wm8350, volt_reg) & ~WM8350_LDO1_HIB_MODE_MASK; | |
696 | wm8350_reg_write(wm8350, volt_reg, WM8350_LDO1_HIB_MODE_DIS); | |
697 | return 0; | |
698 | } | |
699 | ||
700 | static int wm8350_ldo_set_voltage(struct regulator_dev *rdev, int min_uV, | |
701 | int max_uV) | |
702 | { | |
703 | struct wm8350 *wm8350 = rdev_get_drvdata(rdev); | |
704 | int volt_reg, ldo = rdev_get_id(rdev), mV, min_mV = min_uV / 1000, | |
705 | max_mV = max_uV / 1000; | |
706 | u16 val; | |
707 | ||
708 | if (min_mV < 900 || min_mV > 3300) | |
709 | return -EINVAL; | |
710 | if (max_mV < 900 || max_mV > 3300) | |
711 | return -EINVAL; | |
712 | ||
713 | if (min_mV < 1800) { | |
714 | /* step size is 50mV < 1800mV */ | |
715 | mV = (min_mV - 851) / 50; | |
716 | if (wm8350_ldo_val_to_mvolts(mV) > max_mV) | |
717 | return -EINVAL; | |
718 | BUG_ON(wm8350_ldo_val_to_mvolts(mV) < min_mV); | |
719 | } else { | |
720 | /* step size is 100mV > 1800mV */ | |
721 | mV = ((min_mV - 1701) / 100) + 16; | |
722 | if (wm8350_ldo_val_to_mvolts(mV) > max_mV) | |
723 | return -EINVAL; | |
724 | BUG_ON(wm8350_ldo_val_to_mvolts(mV) < min_mV); | |
725 | } | |
726 | ||
727 | switch (ldo) { | |
728 | case WM8350_LDO_1: | |
729 | volt_reg = WM8350_LDO1_CONTROL; | |
730 | break; | |
731 | case WM8350_LDO_2: | |
732 | volt_reg = WM8350_LDO2_CONTROL; | |
733 | break; | |
734 | case WM8350_LDO_3: | |
735 | volt_reg = WM8350_LDO3_CONTROL; | |
736 | break; | |
737 | case WM8350_LDO_4: | |
738 | volt_reg = WM8350_LDO4_CONTROL; | |
739 | break; | |
740 | default: | |
741 | return -EINVAL; | |
742 | } | |
743 | ||
744 | /* all LDOs have same mV bits */ | |
745 | val = wm8350_reg_read(wm8350, volt_reg) & ~WM8350_LDO1_VSEL_MASK; | |
746 | wm8350_reg_write(wm8350, volt_reg, val | mV); | |
747 | return 0; | |
748 | } | |
749 | ||
750 | static int wm8350_ldo_get_voltage(struct regulator_dev *rdev) | |
751 | { | |
752 | struct wm8350 *wm8350 = rdev_get_drvdata(rdev); | |
753 | int volt_reg, ldo = rdev_get_id(rdev); | |
754 | u16 val; | |
755 | ||
756 | switch (ldo) { | |
757 | case WM8350_LDO_1: | |
758 | volt_reg = WM8350_LDO1_CONTROL; | |
759 | break; | |
760 | case WM8350_LDO_2: | |
761 | volt_reg = WM8350_LDO2_CONTROL; | |
762 | break; | |
763 | case WM8350_LDO_3: | |
764 | volt_reg = WM8350_LDO3_CONTROL; | |
765 | break; | |
766 | case WM8350_LDO_4: | |
767 | volt_reg = WM8350_LDO4_CONTROL; | |
768 | break; | |
769 | default: | |
770 | return -EINVAL; | |
771 | } | |
772 | ||
773 | /* all LDOs have same mV bits */ | |
774 | val = wm8350_reg_read(wm8350, volt_reg) & WM8350_LDO1_VSEL_MASK; | |
775 | return wm8350_ldo_val_to_mvolts(val) * 1000; | |
776 | } | |
777 | ||
778 | int wm8350_dcdc_set_slot(struct wm8350 *wm8350, int dcdc, u16 start, | |
779 | u16 stop, u16 fault) | |
780 | { | |
781 | int slot_reg; | |
782 | u16 val; | |
783 | ||
784 | dev_dbg(wm8350->dev, "%s %d start %d stop %d\n", | |
785 | __func__, dcdc, start, stop); | |
786 | ||
787 | /* slot valid ? */ | |
788 | if (start > 15 || stop > 15) | |
789 | return -EINVAL; | |
790 | ||
791 | switch (dcdc) { | |
792 | case WM8350_DCDC_1: | |
793 | slot_reg = WM8350_DCDC1_TIMEOUTS; | |
794 | break; | |
795 | case WM8350_DCDC_2: | |
796 | slot_reg = WM8350_DCDC2_TIMEOUTS; | |
797 | break; | |
798 | case WM8350_DCDC_3: | |
799 | slot_reg = WM8350_DCDC3_TIMEOUTS; | |
800 | break; | |
801 | case WM8350_DCDC_4: | |
802 | slot_reg = WM8350_DCDC4_TIMEOUTS; | |
803 | break; | |
804 | case WM8350_DCDC_5: | |
805 | slot_reg = WM8350_DCDC5_TIMEOUTS; | |
806 | break; | |
807 | case WM8350_DCDC_6: | |
808 | slot_reg = WM8350_DCDC6_TIMEOUTS; | |
809 | break; | |
810 | default: | |
811 | return -EINVAL; | |
812 | } | |
813 | ||
814 | val = wm8350_reg_read(wm8350, slot_reg) & | |
815 | ~(WM8350_DC1_ENSLOT_MASK | WM8350_DC1_SDSLOT_MASK | | |
816 | WM8350_DC1_ERRACT_MASK); | |
817 | wm8350_reg_write(wm8350, slot_reg, | |
818 | val | (start << WM8350_DC1_ENSLOT_SHIFT) | | |
819 | (stop << WM8350_DC1_SDSLOT_SHIFT) | | |
820 | (fault << WM8350_DC1_ERRACT_SHIFT)); | |
821 | ||
822 | return 0; | |
823 | } | |
824 | EXPORT_SYMBOL_GPL(wm8350_dcdc_set_slot); | |
825 | ||
826 | int wm8350_ldo_set_slot(struct wm8350 *wm8350, int ldo, u16 start, u16 stop) | |
827 | { | |
828 | int slot_reg; | |
829 | u16 val; | |
830 | ||
831 | dev_dbg(wm8350->dev, "%s %d start %d stop %d\n", | |
832 | __func__, ldo, start, stop); | |
833 | ||
834 | /* slot valid ? */ | |
835 | if (start > 15 || stop > 15) | |
836 | return -EINVAL; | |
837 | ||
838 | switch (ldo) { | |
839 | case WM8350_LDO_1: | |
840 | slot_reg = WM8350_LDO1_TIMEOUTS; | |
841 | break; | |
842 | case WM8350_LDO_2: | |
843 | slot_reg = WM8350_LDO2_TIMEOUTS; | |
844 | break; | |
845 | case WM8350_LDO_3: | |
846 | slot_reg = WM8350_LDO3_TIMEOUTS; | |
847 | break; | |
848 | case WM8350_LDO_4: | |
849 | slot_reg = WM8350_LDO4_TIMEOUTS; | |
850 | break; | |
851 | default: | |
852 | return -EINVAL; | |
853 | } | |
854 | ||
855 | val = wm8350_reg_read(wm8350, slot_reg) & ~WM8350_LDO1_SDSLOT_MASK; | |
856 | wm8350_reg_write(wm8350, slot_reg, val | ((start << 10) | (stop << 6))); | |
857 | return 0; | |
858 | } | |
859 | EXPORT_SYMBOL_GPL(wm8350_ldo_set_slot); | |
860 | ||
861 | int wm8350_dcdc25_set_mode(struct wm8350 *wm8350, int dcdc, u16 mode, | |
862 | u16 ilim, u16 ramp, u16 feedback) | |
863 | { | |
864 | u16 val; | |
865 | ||
866 | dev_dbg(wm8350->dev, "%s %d mode: %s %s\n", __func__, dcdc, | |
867 | mode ? "normal" : "boost", ilim ? "low" : "normal"); | |
868 | ||
869 | switch (dcdc) { | |
870 | case WM8350_DCDC_2: | |
871 | val = wm8350_reg_read(wm8350, WM8350_DCDC2_CONTROL) | |
872 | & ~(WM8350_DC2_MODE_MASK | WM8350_DC2_ILIM_MASK | | |
873 | WM8350_DC2_RMP_MASK | WM8350_DC2_FBSRC_MASK); | |
874 | wm8350_reg_write(wm8350, WM8350_DCDC2_CONTROL, val | | |
875 | (mode << WM8350_DC2_MODE_SHIFT) | | |
876 | (ilim << WM8350_DC2_ILIM_SHIFT) | | |
877 | (ramp << WM8350_DC2_RMP_SHIFT) | | |
878 | (feedback << WM8350_DC2_FBSRC_SHIFT)); | |
879 | break; | |
880 | case WM8350_DCDC_5: | |
881 | val = wm8350_reg_read(wm8350, WM8350_DCDC5_CONTROL) | |
882 | & ~(WM8350_DC5_MODE_MASK | WM8350_DC5_ILIM_MASK | | |
883 | WM8350_DC5_RMP_MASK | WM8350_DC5_FBSRC_MASK); | |
884 | wm8350_reg_write(wm8350, WM8350_DCDC5_CONTROL, val | | |
885 | (mode << WM8350_DC5_MODE_SHIFT) | | |
886 | (ilim << WM8350_DC5_ILIM_SHIFT) | | |
887 | (ramp << WM8350_DC5_RMP_SHIFT) | | |
888 | (feedback << WM8350_DC5_FBSRC_SHIFT)); | |
889 | break; | |
890 | default: | |
891 | return -EINVAL; | |
892 | } | |
893 | ||
894 | return 0; | |
895 | } | |
896 | EXPORT_SYMBOL_GPL(wm8350_dcdc25_set_mode); | |
897 | ||
898 | static int wm8350_dcdc_enable(struct regulator_dev *rdev) | |
899 | { | |
900 | struct wm8350 *wm8350 = rdev_get_drvdata(rdev); | |
901 | int dcdc = rdev_get_id(rdev); | |
902 | u16 shift; | |
903 | ||
904 | if (dcdc < WM8350_DCDC_1 || dcdc > WM8350_DCDC_6) | |
905 | return -EINVAL; | |
906 | ||
907 | shift = dcdc - WM8350_DCDC_1; | |
908 | wm8350_set_bits(wm8350, WM8350_DCDC_LDO_REQUESTED, 1 << shift); | |
909 | return 0; | |
910 | } | |
911 | ||
912 | static int wm8350_dcdc_disable(struct regulator_dev *rdev) | |
913 | { | |
914 | struct wm8350 *wm8350 = rdev_get_drvdata(rdev); | |
915 | int dcdc = rdev_get_id(rdev); | |
916 | u16 shift; | |
917 | ||
918 | if (dcdc < WM8350_DCDC_1 || dcdc > WM8350_DCDC_6) | |
919 | return -EINVAL; | |
920 | ||
921 | shift = dcdc - WM8350_DCDC_1; | |
922 | wm8350_clear_bits(wm8350, WM8350_DCDC_LDO_REQUESTED, 1 << shift); | |
923 | ||
924 | return 0; | |
925 | } | |
926 | ||
927 | static int wm8350_ldo_enable(struct regulator_dev *rdev) | |
928 | { | |
929 | struct wm8350 *wm8350 = rdev_get_drvdata(rdev); | |
930 | int ldo = rdev_get_id(rdev); | |
931 | u16 shift; | |
932 | ||
933 | if (ldo < WM8350_LDO_1 || ldo > WM8350_LDO_4) | |
934 | return -EINVAL; | |
935 | ||
936 | shift = (ldo - WM8350_LDO_1) + 8; | |
937 | wm8350_set_bits(wm8350, WM8350_DCDC_LDO_REQUESTED, 1 << shift); | |
938 | return 0; | |
939 | } | |
940 | ||
941 | static int wm8350_ldo_disable(struct regulator_dev *rdev) | |
942 | { | |
943 | struct wm8350 *wm8350 = rdev_get_drvdata(rdev); | |
944 | int ldo = rdev_get_id(rdev); | |
945 | u16 shift; | |
946 | ||
947 | if (ldo < WM8350_LDO_1 || ldo > WM8350_LDO_4) | |
948 | return -EINVAL; | |
949 | ||
950 | shift = (ldo - WM8350_LDO_1) + 8; | |
951 | wm8350_clear_bits(wm8350, WM8350_DCDC_LDO_REQUESTED, 1 << shift); | |
952 | return 0; | |
953 | } | |
954 | ||
955 | static int force_continuous_enable(struct wm8350 *wm8350, int dcdc, int enable) | |
956 | { | |
957 | int reg = 0, ret; | |
958 | ||
959 | switch (dcdc) { | |
960 | case WM8350_DCDC_1: | |
961 | reg = WM8350_DCDC1_FORCE_PWM; | |
962 | break; | |
963 | case WM8350_DCDC_3: | |
964 | reg = WM8350_DCDC3_FORCE_PWM; | |
965 | break; | |
966 | case WM8350_DCDC_4: | |
967 | reg = WM8350_DCDC4_FORCE_PWM; | |
968 | break; | |
969 | case WM8350_DCDC_6: | |
970 | reg = WM8350_DCDC6_FORCE_PWM; | |
971 | break; | |
972 | default: | |
973 | return -EINVAL; | |
974 | } | |
975 | ||
976 | if (enable) | |
977 | ret = wm8350_set_bits(wm8350, reg, | |
978 | WM8350_DCDC1_FORCE_PWM_ENA); | |
979 | else | |
980 | ret = wm8350_clear_bits(wm8350, reg, | |
981 | WM8350_DCDC1_FORCE_PWM_ENA); | |
982 | return ret; | |
983 | } | |
984 | ||
985 | static int wm8350_dcdc_set_mode(struct regulator_dev *rdev, unsigned int mode) | |
986 | { | |
987 | struct wm8350 *wm8350 = rdev_get_drvdata(rdev); | |
988 | int dcdc = rdev_get_id(rdev); | |
989 | u16 val; | |
990 | ||
991 | if (dcdc < WM8350_DCDC_1 || dcdc > WM8350_DCDC_6) | |
992 | return -EINVAL; | |
993 | ||
994 | if (dcdc == WM8350_DCDC_2 || dcdc == WM8350_DCDC_5) | |
995 | return -EINVAL; | |
996 | ||
997 | val = 1 << (dcdc - WM8350_DCDC_1); | |
998 | ||
999 | switch (mode) { | |
1000 | case REGULATOR_MODE_FAST: | |
1001 | /* force continuous mode */ | |
1002 | wm8350_set_bits(wm8350, WM8350_DCDC_ACTIVE_OPTIONS, val); | |
1003 | wm8350_clear_bits(wm8350, WM8350_DCDC_SLEEP_OPTIONS, val); | |
1004 | force_continuous_enable(wm8350, dcdc, 1); | |
1005 | break; | |
1006 | case REGULATOR_MODE_NORMAL: | |
1007 | /* active / pulse skipping */ | |
1008 | wm8350_set_bits(wm8350, WM8350_DCDC_ACTIVE_OPTIONS, val); | |
1009 | wm8350_clear_bits(wm8350, WM8350_DCDC_SLEEP_OPTIONS, val); | |
1010 | force_continuous_enable(wm8350, dcdc, 0); | |
1011 | break; | |
1012 | case REGULATOR_MODE_IDLE: | |
1013 | /* standby mode */ | |
1014 | force_continuous_enable(wm8350, dcdc, 0); | |
1015 | wm8350_clear_bits(wm8350, WM8350_DCDC_SLEEP_OPTIONS, val); | |
1016 | wm8350_clear_bits(wm8350, WM8350_DCDC_ACTIVE_OPTIONS, val); | |
1017 | break; | |
1018 | case REGULATOR_MODE_STANDBY: | |
1019 | /* LDO mode */ | |
1020 | force_continuous_enable(wm8350, dcdc, 0); | |
1021 | wm8350_set_bits(wm8350, WM8350_DCDC_SLEEP_OPTIONS, val); | |
1022 | break; | |
1023 | } | |
1024 | ||
1025 | return 0; | |
1026 | } | |
1027 | ||
1028 | static unsigned int wm8350_dcdc_get_mode(struct regulator_dev *rdev) | |
1029 | { | |
1030 | struct wm8350 *wm8350 = rdev_get_drvdata(rdev); | |
1031 | int dcdc = rdev_get_id(rdev); | |
1032 | u16 mask, sleep, active, force; | |
1033 | int mode = REGULATOR_MODE_NORMAL; | |
1034 | ||
1035 | if (dcdc < WM8350_DCDC_1 || dcdc > WM8350_DCDC_6) | |
1036 | return -EINVAL; | |
1037 | ||
1038 | if (dcdc == WM8350_DCDC_2 || dcdc == WM8350_DCDC_5) | |
1039 | return -EINVAL; | |
1040 | ||
1041 | mask = 1 << (dcdc - WM8350_DCDC_1); | |
1042 | active = wm8350_reg_read(wm8350, WM8350_DCDC_ACTIVE_OPTIONS) & mask; | |
1043 | sleep = wm8350_reg_read(wm8350, WM8350_DCDC_SLEEP_OPTIONS) & mask; | |
1044 | force = wm8350_reg_read(wm8350, WM8350_DCDC1_FORCE_PWM) | |
1045 | & WM8350_DCDC1_FORCE_PWM_ENA; | |
1046 | dev_dbg(wm8350->dev, "mask %x active %x sleep %x force %x", | |
1047 | mask, active, sleep, force); | |
1048 | ||
1049 | if (active && !sleep) { | |
1050 | if (force) | |
1051 | mode = REGULATOR_MODE_FAST; | |
1052 | else | |
1053 | mode = REGULATOR_MODE_NORMAL; | |
1054 | } else if (!active && !sleep) | |
1055 | mode = REGULATOR_MODE_IDLE; | |
1056 | else if (!sleep) | |
1057 | mode = REGULATOR_MODE_STANDBY; | |
1058 | ||
1059 | return mode; | |
1060 | } | |
1061 | ||
1062 | static unsigned int wm8350_ldo_get_mode(struct regulator_dev *rdev) | |
1063 | { | |
1064 | return REGULATOR_MODE_NORMAL; | |
1065 | } | |
1066 | ||
1067 | struct wm8350_dcdc_efficiency { | |
1068 | int uA_load_min; | |
1069 | int uA_load_max; | |
1070 | unsigned int mode; | |
1071 | }; | |
1072 | ||
1073 | static const struct wm8350_dcdc_efficiency dcdc1_6_efficiency[] = { | |
1074 | {0, 10000, REGULATOR_MODE_STANDBY}, /* 0 - 10mA - LDO */ | |
1075 | {10000, 100000, REGULATOR_MODE_IDLE}, /* 10mA - 100mA - Standby */ | |
1076 | {100000, 1000000, REGULATOR_MODE_NORMAL}, /* > 100mA - Active */ | |
1077 | {-1, -1, REGULATOR_MODE_NORMAL}, | |
1078 | }; | |
1079 | ||
1080 | static const struct wm8350_dcdc_efficiency dcdc3_4_efficiency[] = { | |
1081 | {0, 10000, REGULATOR_MODE_STANDBY}, /* 0 - 10mA - LDO */ | |
1082 | {10000, 100000, REGULATOR_MODE_IDLE}, /* 10mA - 100mA - Standby */ | |
1083 | {100000, 800000, REGULATOR_MODE_NORMAL}, /* > 100mA - Active */ | |
1084 | {-1, -1, REGULATOR_MODE_NORMAL}, | |
1085 | }; | |
1086 | ||
1087 | static unsigned int get_mode(int uA, const struct wm8350_dcdc_efficiency *eff) | |
1088 | { | |
1089 | int i = 0; | |
1090 | ||
1091 | while (eff[i].uA_load_min != -1) { | |
1092 | if (uA >= eff[i].uA_load_min && uA <= eff[i].uA_load_max) | |
1093 | return eff[i].mode; | |
1094 | } | |
1095 | return REGULATOR_MODE_NORMAL; | |
1096 | } | |
1097 | ||
1098 | /* Query the regulator for it's most efficient mode @ uV,uA | |
1099 | * WM8350 regulator efficiency is pretty similar over | |
1100 | * different input and output uV. | |
1101 | */ | |
1102 | static unsigned int wm8350_dcdc_get_optimum_mode(struct regulator_dev *rdev, | |
1103 | int input_uV, int output_uV, | |
1104 | int output_uA) | |
1105 | { | |
1106 | int dcdc = rdev_get_id(rdev), mode; | |
1107 | ||
1108 | switch (dcdc) { | |
1109 | case WM8350_DCDC_1: | |
1110 | case WM8350_DCDC_6: | |
1111 | mode = get_mode(output_uA, dcdc1_6_efficiency); | |
1112 | break; | |
1113 | case WM8350_DCDC_3: | |
1114 | case WM8350_DCDC_4: | |
1115 | mode = get_mode(output_uA, dcdc3_4_efficiency); | |
1116 | break; | |
1117 | default: | |
1118 | mode = REGULATOR_MODE_NORMAL; | |
1119 | break; | |
1120 | } | |
1121 | return mode; | |
1122 | } | |
1123 | ||
1124 | static int wm8350_dcdc_is_enabled(struct regulator_dev *rdev) | |
1125 | { | |
1126 | struct wm8350 *wm8350 = rdev_get_drvdata(rdev); | |
1127 | int dcdc = rdev_get_id(rdev), shift; | |
1128 | ||
1129 | if (dcdc < WM8350_DCDC_1 || dcdc > WM8350_DCDC_6) | |
1130 | return -EINVAL; | |
1131 | ||
1132 | shift = dcdc - WM8350_DCDC_1; | |
1133 | return wm8350_reg_read(wm8350, WM8350_DCDC_LDO_REQUESTED) | |
1134 | & (1 << shift); | |
1135 | } | |
1136 | ||
1137 | static int wm8350_ldo_is_enabled(struct regulator_dev *rdev) | |
1138 | { | |
1139 | struct wm8350 *wm8350 = rdev_get_drvdata(rdev); | |
1140 | int ldo = rdev_get_id(rdev), shift; | |
1141 | ||
1142 | if (ldo < WM8350_LDO_1 || ldo > WM8350_LDO_4) | |
1143 | return -EINVAL; | |
1144 | ||
1145 | shift = (ldo - WM8350_LDO_1) + 8; | |
1146 | return wm8350_reg_read(wm8350, WM8350_DCDC_LDO_REQUESTED) | |
1147 | & (1 << shift); | |
1148 | } | |
1149 | ||
1150 | static struct regulator_ops wm8350_dcdc_ops = { | |
1151 | .set_voltage = wm8350_dcdc_set_voltage, | |
1152 | .get_voltage = wm8350_dcdc_get_voltage, | |
1153 | .enable = wm8350_dcdc_enable, | |
1154 | .disable = wm8350_dcdc_disable, | |
1155 | .get_mode = wm8350_dcdc_get_mode, | |
1156 | .set_mode = wm8350_dcdc_set_mode, | |
1157 | .get_optimum_mode = wm8350_dcdc_get_optimum_mode, | |
1158 | .is_enabled = wm8350_dcdc_is_enabled, | |
1159 | .set_suspend_voltage = wm8350_dcdc_set_suspend_voltage, | |
1160 | .set_suspend_enable = wm8350_dcdc_set_suspend_enable, | |
1161 | .set_suspend_disable = wm8350_dcdc_set_suspend_disable, | |
1162 | .set_suspend_mode = wm8350_dcdc_set_suspend_mode, | |
1163 | }; | |
1164 | ||
1165 | static struct regulator_ops wm8350_dcdc2_5_ops = { | |
1166 | .enable = wm8350_dcdc_enable, | |
1167 | .disable = wm8350_dcdc_disable, | |
1168 | .is_enabled = wm8350_dcdc_is_enabled, | |
1169 | .set_suspend_enable = wm8350_dcdc25_set_suspend_enable, | |
1170 | .set_suspend_disable = wm8350_dcdc25_set_suspend_disable, | |
1171 | }; | |
1172 | ||
1173 | static struct regulator_ops wm8350_ldo_ops = { | |
1174 | .set_voltage = wm8350_ldo_set_voltage, | |
1175 | .get_voltage = wm8350_ldo_get_voltage, | |
1176 | .enable = wm8350_ldo_enable, | |
1177 | .disable = wm8350_ldo_disable, | |
1178 | .is_enabled = wm8350_ldo_is_enabled, | |
1179 | .get_mode = wm8350_ldo_get_mode, | |
1180 | .set_suspend_voltage = wm8350_ldo_set_suspend_voltage, | |
1181 | .set_suspend_enable = wm8350_ldo_set_suspend_enable, | |
1182 | .set_suspend_disable = wm8350_ldo_set_suspend_disable, | |
1183 | }; | |
1184 | ||
1185 | static struct regulator_ops wm8350_isink_ops = { | |
1186 | .set_current_limit = wm8350_isink_set_current, | |
1187 | .get_current_limit = wm8350_isink_get_current, | |
1188 | .enable = wm8350_isink_enable, | |
1189 | .disable = wm8350_isink_disable, | |
1190 | .is_enabled = wm8350_isink_is_enabled, | |
1191 | }; | |
1192 | ||
1193 | static struct regulator_desc wm8350_reg[NUM_WM8350_REGULATORS] = { | |
1194 | { | |
1195 | .name = "DCDC1", | |
1196 | .id = WM8350_DCDC_1, | |
1197 | .ops = &wm8350_dcdc_ops, | |
1198 | .irq = WM8350_IRQ_UV_DC1, | |
1199 | .type = REGULATOR_VOLTAGE, | |
1200 | .owner = THIS_MODULE, | |
1201 | }, | |
1202 | { | |
1203 | .name = "DCDC2", | |
1204 | .id = WM8350_DCDC_2, | |
1205 | .ops = &wm8350_dcdc2_5_ops, | |
1206 | .irq = WM8350_IRQ_UV_DC2, | |
1207 | .type = REGULATOR_VOLTAGE, | |
1208 | .owner = THIS_MODULE, | |
1209 | }, | |
1210 | { | |
1211 | .name = "DCDC3", | |
1212 | .id = WM8350_DCDC_3, | |
1213 | .ops = &wm8350_dcdc_ops, | |
1214 | .irq = WM8350_IRQ_UV_DC3, | |
1215 | .type = REGULATOR_VOLTAGE, | |
1216 | .owner = THIS_MODULE, | |
1217 | }, | |
1218 | { | |
1219 | .name = "DCDC4", | |
1220 | .id = WM8350_DCDC_4, | |
1221 | .ops = &wm8350_dcdc_ops, | |
1222 | .irq = WM8350_IRQ_UV_DC4, | |
1223 | .type = REGULATOR_VOLTAGE, | |
1224 | .owner = THIS_MODULE, | |
1225 | }, | |
1226 | { | |
1227 | .name = "DCDC5", | |
1228 | .id = WM8350_DCDC_5, | |
1229 | .ops = &wm8350_dcdc2_5_ops, | |
1230 | .irq = WM8350_IRQ_UV_DC5, | |
1231 | .type = REGULATOR_VOLTAGE, | |
1232 | .owner = THIS_MODULE, | |
1233 | }, | |
1234 | { | |
1235 | .name = "DCDC6", | |
1236 | .id = WM8350_DCDC_6, | |
1237 | .ops = &wm8350_dcdc_ops, | |
1238 | .irq = WM8350_IRQ_UV_DC6, | |
1239 | .type = REGULATOR_VOLTAGE, | |
1240 | .owner = THIS_MODULE, | |
1241 | }, | |
1242 | { | |
1243 | .name = "LDO1", | |
1244 | .id = WM8350_LDO_1, | |
1245 | .ops = &wm8350_ldo_ops, | |
1246 | .irq = WM8350_IRQ_UV_LDO1, | |
1247 | .type = REGULATOR_VOLTAGE, | |
1248 | .owner = THIS_MODULE, | |
1249 | }, | |
1250 | { | |
1251 | .name = "LDO2", | |
1252 | .id = WM8350_LDO_2, | |
1253 | .ops = &wm8350_ldo_ops, | |
1254 | .irq = WM8350_IRQ_UV_LDO2, | |
1255 | .type = REGULATOR_VOLTAGE, | |
1256 | .owner = THIS_MODULE, | |
1257 | }, | |
1258 | { | |
1259 | .name = "LDO3", | |
1260 | .id = WM8350_LDO_3, | |
1261 | .ops = &wm8350_ldo_ops, | |
1262 | .irq = WM8350_IRQ_UV_LDO3, | |
1263 | .type = REGULATOR_VOLTAGE, | |
1264 | .owner = THIS_MODULE, | |
1265 | }, | |
1266 | { | |
1267 | .name = "LDO4", | |
1268 | .id = WM8350_LDO_4, | |
1269 | .ops = &wm8350_ldo_ops, | |
1270 | .irq = WM8350_IRQ_UV_LDO4, | |
1271 | .type = REGULATOR_VOLTAGE, | |
1272 | .owner = THIS_MODULE, | |
1273 | }, | |
1274 | { | |
1275 | .name = "ISINKA", | |
1276 | .id = WM8350_ISINK_A, | |
1277 | .ops = &wm8350_isink_ops, | |
1278 | .irq = WM8350_IRQ_CS1, | |
1279 | .type = REGULATOR_CURRENT, | |
1280 | .owner = THIS_MODULE, | |
1281 | }, | |
1282 | { | |
1283 | .name = "ISINKB", | |
1284 | .id = WM8350_ISINK_B, | |
1285 | .ops = &wm8350_isink_ops, | |
1286 | .irq = WM8350_IRQ_CS2, | |
1287 | .type = REGULATOR_CURRENT, | |
1288 | .owner = THIS_MODULE, | |
1289 | }, | |
1290 | }; | |
1291 | ||
1292 | static void pmic_uv_handler(struct wm8350 *wm8350, int irq, void *data) | |
1293 | { | |
1294 | struct regulator_dev *rdev = (struct regulator_dev *)data; | |
1295 | ||
1296 | if (irq == WM8350_IRQ_CS1 || irq == WM8350_IRQ_CS2) | |
1297 | regulator_notifier_call_chain(rdev, | |
1298 | REGULATOR_EVENT_REGULATION_OUT, | |
1299 | wm8350); | |
1300 | else | |
1301 | regulator_notifier_call_chain(rdev, | |
1302 | REGULATOR_EVENT_UNDER_VOLTAGE, | |
1303 | wm8350); | |
1304 | } | |
1305 | ||
1306 | static int wm8350_regulator_probe(struct platform_device *pdev) | |
1307 | { | |
1308 | struct wm8350 *wm8350 = dev_get_drvdata(&pdev->dev); | |
1309 | struct regulator_dev *rdev; | |
1310 | int ret; | |
1311 | u16 val; | |
1312 | ||
1313 | if (pdev->id < WM8350_DCDC_1 || pdev->id > WM8350_ISINK_B) | |
1314 | return -ENODEV; | |
1315 | ||
1316 | /* do any regulatior specific init */ | |
1317 | switch (pdev->id) { | |
1318 | case WM8350_DCDC_1: | |
1319 | val = wm8350_reg_read(wm8350, WM8350_DCDC1_LOW_POWER); | |
1320 | wm8350->pmic.dcdc1_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK; | |
1321 | break; | |
1322 | case WM8350_DCDC_3: | |
1323 | val = wm8350_reg_read(wm8350, WM8350_DCDC3_LOW_POWER); | |
1324 | wm8350->pmic.dcdc3_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK; | |
1325 | break; | |
1326 | case WM8350_DCDC_4: | |
1327 | val = wm8350_reg_read(wm8350, WM8350_DCDC4_LOW_POWER); | |
1328 | wm8350->pmic.dcdc4_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK; | |
1329 | break; | |
1330 | case WM8350_DCDC_6: | |
1331 | val = wm8350_reg_read(wm8350, WM8350_DCDC6_LOW_POWER); | |
1332 | wm8350->pmic.dcdc6_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK; | |
1333 | break; | |
1334 | } | |
1335 | ||
1336 | ||
1337 | /* register regulator */ | |
1338 | rdev = regulator_register(&wm8350_reg[pdev->id], &pdev->dev, | |
1339 | dev_get_drvdata(&pdev->dev)); | |
1340 | if (IS_ERR(rdev)) { | |
1341 | dev_err(&pdev->dev, "failed to register %s\n", | |
1342 | wm8350_reg[pdev->id].name); | |
1343 | return PTR_ERR(rdev); | |
1344 | } | |
1345 | ||
1346 | /* register regulator IRQ */ | |
1347 | ret = wm8350_register_irq(wm8350, wm8350_reg[pdev->id].irq, | |
1348 | pmic_uv_handler, rdev); | |
1349 | if (ret < 0) { | |
1350 | regulator_unregister(rdev); | |
1351 | dev_err(&pdev->dev, "failed to register regulator %s IRQ\n", | |
1352 | wm8350_reg[pdev->id].name); | |
1353 | return ret; | |
1354 | } | |
1355 | ||
1356 | wm8350_unmask_irq(wm8350, wm8350_reg[pdev->id].irq); | |
1357 | ||
1358 | return 0; | |
1359 | } | |
1360 | ||
1361 | static int wm8350_regulator_remove(struct platform_device *pdev) | |
1362 | { | |
1363 | struct regulator_dev *rdev = platform_get_drvdata(pdev); | |
1364 | struct wm8350 *wm8350 = rdev_get_drvdata(rdev); | |
1365 | ||
1366 | wm8350_mask_irq(wm8350, wm8350_reg[pdev->id].irq); | |
1367 | wm8350_free_irq(wm8350, wm8350_reg[pdev->id].irq); | |
1368 | ||
1369 | regulator_unregister(rdev); | |
1370 | ||
1371 | return 0; | |
1372 | } | |
1373 | ||
1374 | int wm8350_register_regulator(struct wm8350 *wm8350, int reg, | |
1375 | struct regulator_init_data *initdata) | |
1376 | { | |
1377 | struct platform_device *pdev; | |
1378 | int ret; | |
1379 | ||
1380 | if (wm8350->pmic.pdev[reg]) | |
1381 | return -EBUSY; | |
1382 | ||
645524a9 MB |
1383 | if (reg >= WM8350_DCDC_1 && reg <= WM8350_DCDC_6 && |
1384 | reg > wm8350->pmic.max_dcdc) | |
1385 | return -ENODEV; | |
1386 | if (reg >= WM8350_ISINK_A && reg <= WM8350_ISINK_B && | |
1387 | reg > wm8350->pmic.max_isink) | |
1388 | return -ENODEV; | |
1389 | ||
da09155a MB |
1390 | pdev = platform_device_alloc("wm8350-regulator", reg); |
1391 | if (!pdev) | |
1392 | return -ENOMEM; | |
1393 | ||
1394 | wm8350->pmic.pdev[reg] = pdev; | |
1395 | ||
1396 | initdata->driver_data = wm8350; | |
1397 | ||
1398 | pdev->dev.platform_data = initdata; | |
1399 | pdev->dev.parent = wm8350->dev; | |
1400 | platform_set_drvdata(pdev, wm8350); | |
1401 | ||
1402 | ret = platform_device_add(pdev); | |
1403 | ||
1404 | if (ret != 0) { | |
1405 | dev_err(wm8350->dev, "Failed to register regulator %d: %d\n", | |
1406 | reg, ret); | |
1407 | platform_device_del(pdev); | |
1408 | wm8350->pmic.pdev[reg] = NULL; | |
1409 | } | |
1410 | ||
1411 | return ret; | |
1412 | } | |
1413 | EXPORT_SYMBOL_GPL(wm8350_register_regulator); | |
1414 | ||
0081e802 MB |
1415 | /** |
1416 | * wm8350_register_led - Register a WM8350 LED output | |
1417 | * | |
1418 | * @param wm8350 The WM8350 device to configure. | |
1419 | * @param lednum LED device index to create. | |
1420 | * @param dcdc The DCDC to use for the LED. | |
1421 | * @param isink The ISINK to use for the LED. | |
1422 | * @param pdata Configuration for the LED. | |
1423 | * | |
1424 | * The WM8350 supports the use of an ISINK together with a DCDC to | |
1425 | * provide a power-efficient LED driver. This function registers the | |
1426 | * regulators and instantiates the platform device for a LED. The | |
1427 | * operating modes for the LED regulators must be configured using | |
1428 | * wm8350_isink_set_flash(), wm8350_dcdc25_set_mode() and | |
1429 | * wm8350_dcdc_set_slot() prior to calling this function. | |
1430 | */ | |
1431 | int wm8350_register_led(struct wm8350 *wm8350, int lednum, int dcdc, int isink, | |
1432 | struct wm8350_led_platform_data *pdata) | |
1433 | { | |
1434 | struct wm8350_led *led; | |
1435 | struct platform_device *pdev; | |
1436 | int ret; | |
1437 | ||
8dd2c9e3 | 1438 | if (lednum >= ARRAY_SIZE(wm8350->pmic.led) || lednum < 0) { |
0081e802 MB |
1439 | dev_err(wm8350->dev, "Invalid LED index %d\n", lednum); |
1440 | return -ENODEV; | |
1441 | } | |
1442 | ||
1443 | led = &wm8350->pmic.led[lednum]; | |
1444 | ||
1445 | if (led->pdev) { | |
1446 | dev_err(wm8350->dev, "LED %d already allocated\n", lednum); | |
1447 | return -EINVAL; | |
1448 | } | |
1449 | ||
1450 | pdev = platform_device_alloc("wm8350-led", lednum); | |
1451 | if (pdev == NULL) { | |
1452 | dev_err(wm8350->dev, "Failed to allocate LED %d\n", lednum); | |
1453 | return -ENOMEM; | |
1454 | } | |
1455 | ||
1456 | led->isink_consumer.dev = &pdev->dev; | |
1457 | led->isink_consumer.supply = "led_isink"; | |
1458 | led->isink_init.num_consumer_supplies = 1; | |
1459 | led->isink_init.consumer_supplies = &led->isink_consumer; | |
1460 | led->isink_init.constraints.min_uA = 0; | |
1461 | led->isink_init.constraints.max_uA = pdata->max_uA; | |
1462 | led->isink_init.constraints.valid_ops_mask = REGULATOR_CHANGE_CURRENT; | |
1463 | led->isink_init.constraints.valid_modes_mask = REGULATOR_MODE_NORMAL; | |
1464 | ret = wm8350_register_regulator(wm8350, isink, &led->isink_init); | |
1465 | if (ret != 0) { | |
1466 | platform_device_put(pdev); | |
1467 | return ret; | |
1468 | } | |
1469 | ||
1470 | led->dcdc_consumer.dev = &pdev->dev; | |
1471 | led->dcdc_consumer.supply = "led_vcc"; | |
1472 | led->dcdc_init.num_consumer_supplies = 1; | |
1473 | led->dcdc_init.consumer_supplies = &led->dcdc_consumer; | |
1474 | led->dcdc_init.constraints.valid_modes_mask = REGULATOR_MODE_NORMAL; | |
1475 | ret = wm8350_register_regulator(wm8350, dcdc, &led->dcdc_init); | |
1476 | if (ret != 0) { | |
1477 | platform_device_put(pdev); | |
1478 | return ret; | |
1479 | } | |
1480 | ||
1481 | switch (isink) { | |
1482 | case WM8350_ISINK_A: | |
1483 | wm8350->pmic.isink_A_dcdc = dcdc; | |
1484 | break; | |
1485 | case WM8350_ISINK_B: | |
1486 | wm8350->pmic.isink_B_dcdc = dcdc; | |
1487 | break; | |
1488 | } | |
1489 | ||
1490 | pdev->dev.platform_data = pdata; | |
1491 | pdev->dev.parent = wm8350->dev; | |
1492 | ret = platform_device_add(pdev); | |
1493 | if (ret != 0) { | |
1494 | dev_err(wm8350->dev, "Failed to register LED %d: %d\n", | |
1495 | lednum, ret); | |
1496 | platform_device_put(pdev); | |
1497 | return ret; | |
1498 | } | |
1499 | ||
1500 | led->pdev = pdev; | |
1501 | ||
1502 | return 0; | |
1503 | } | |
1504 | EXPORT_SYMBOL_GPL(wm8350_register_led); | |
1505 | ||
da09155a MB |
1506 | static struct platform_driver wm8350_regulator_driver = { |
1507 | .probe = wm8350_regulator_probe, | |
1508 | .remove = wm8350_regulator_remove, | |
1509 | .driver = { | |
1510 | .name = "wm8350-regulator", | |
1511 | }, | |
1512 | }; | |
1513 | ||
1514 | static int __init wm8350_regulator_init(void) | |
1515 | { | |
1516 | return platform_driver_register(&wm8350_regulator_driver); | |
1517 | } | |
1518 | subsys_initcall(wm8350_regulator_init); | |
1519 | ||
1520 | static void __exit wm8350_regulator_exit(void) | |
1521 | { | |
1522 | platform_driver_unregister(&wm8350_regulator_driver); | |
1523 | } | |
1524 | module_exit(wm8350_regulator_exit); | |
1525 | ||
1526 | /* Module information */ | |
1527 | MODULE_AUTHOR("Liam Girdwood"); | |
1528 | MODULE_DESCRIPTION("WM8350 voltage and current regulator driver"); | |
1529 | MODULE_LICENSE("GPL"); |