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Commit | Line | Data |
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d1c6b4fe MB |
1 | /* |
2 | * wm831x-ldo.c -- LDO driver for the WM831x series | |
3 | * | |
4 | * Copyright 2009 Wolfson Microelectronics PLC. | |
5 | * | |
6 | * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the | |
10 | * Free Software Foundation; either version 2 of the License, or (at your | |
11 | * option) any later version. | |
12 | */ | |
13 | ||
14 | #include <linux/module.h> | |
15 | #include <linux/moduleparam.h> | |
16 | #include <linux/init.h> | |
17 | #include <linux/bitops.h> | |
18 | #include <linux/err.h> | |
19 | #include <linux/i2c.h> | |
20 | #include <linux/platform_device.h> | |
21 | #include <linux/regulator/driver.h> | |
5a0e3ad6 | 22 | #include <linux/slab.h> |
d1c6b4fe MB |
23 | |
24 | #include <linux/mfd/wm831x/core.h> | |
25 | #include <linux/mfd/wm831x/regulator.h> | |
26 | #include <linux/mfd/wm831x/pdata.h> | |
27 | ||
f1aba13f | 28 | #define WM831X_LDO_MAX_NAME 9 |
d1c6b4fe MB |
29 | |
30 | #define WM831X_LDO_CONTROL 0 | |
31 | #define WM831X_LDO_ON_CONTROL 1 | |
32 | #define WM831X_LDO_SLEEP_CONTROL 2 | |
33 | ||
34 | #define WM831X_ALIVE_LDO_ON_CONTROL 0 | |
35 | #define WM831X_ALIVE_LDO_SLEEP_CONTROL 1 | |
36 | ||
37 | struct wm831x_ldo { | |
38 | char name[WM831X_LDO_MAX_NAME]; | |
f1aba13f | 39 | char supply_name[WM831X_LDO_MAX_NAME]; |
d1c6b4fe MB |
40 | struct regulator_desc desc; |
41 | int base; | |
42 | struct wm831x *wm831x; | |
43 | struct regulator_dev *regulator; | |
44 | }; | |
45 | ||
46 | /* | |
47 | * Shared | |
48 | */ | |
49 | ||
d1c6b4fe MB |
50 | static irqreturn_t wm831x_ldo_uv_irq(int irq, void *data) |
51 | { | |
52 | struct wm831x_ldo *ldo = data; | |
53 | ||
54 | regulator_notifier_call_chain(ldo->regulator, | |
55 | REGULATOR_EVENT_UNDER_VOLTAGE, | |
56 | NULL); | |
57 | ||
58 | return IRQ_HANDLED; | |
59 | } | |
60 | ||
61 | /* | |
62 | * General purpose LDOs | |
63 | */ | |
64 | ||
5ff26a14 | 65 | static const struct regulator_linear_range wm831x_gp_ldo_ranges[] = { |
8828bae4 AL |
66 | REGULATOR_LINEAR_RANGE(900000, 0, 14, 50000), |
67 | REGULATOR_LINEAR_RANGE(1700000, 15, 31, 100000), | |
5ff26a14 | 68 | }; |
d1c6b4fe MB |
69 | |
70 | static int wm831x_gp_ldo_set_suspend_voltage(struct regulator_dev *rdev, | |
71 | int uV) | |
72 | { | |
73 | struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); | |
0a479689 AL |
74 | struct wm831x *wm831x = ldo->wm831x; |
75 | int sel, reg = ldo->base + WM831X_LDO_SLEEP_CONTROL; | |
d1c6b4fe | 76 | |
5ff26a14 | 77 | sel = regulator_map_voltage_linear_range(rdev, uV, uV); |
0a479689 AL |
78 | if (sel < 0) |
79 | return sel; | |
80 | ||
81 | return wm831x_set_bits(wm831x, reg, WM831X_LDO1_ON_VSEL_MASK, sel); | |
d1c6b4fe MB |
82 | } |
83 | ||
d1c6b4fe MB |
84 | static unsigned int wm831x_gp_ldo_get_mode(struct regulator_dev *rdev) |
85 | { | |
86 | struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); | |
87 | struct wm831x *wm831x = ldo->wm831x; | |
88 | int ctrl_reg = ldo->base + WM831X_LDO_CONTROL; | |
89 | int on_reg = ldo->base + WM831X_LDO_ON_CONTROL; | |
9a767d43 | 90 | int ret; |
d1c6b4fe MB |
91 | |
92 | ret = wm831x_reg_read(wm831x, on_reg); | |
93 | if (ret < 0) | |
9a767d43 | 94 | return ret; |
d1c6b4fe MB |
95 | |
96 | if (!(ret & WM831X_LDO1_ON_MODE)) | |
97 | return REGULATOR_MODE_NORMAL; | |
98 | ||
99 | ret = wm831x_reg_read(wm831x, ctrl_reg); | |
100 | if (ret < 0) | |
9a767d43 | 101 | return ret; |
d1c6b4fe MB |
102 | |
103 | if (ret & WM831X_LDO1_LP_MODE) | |
104 | return REGULATOR_MODE_STANDBY; | |
105 | else | |
106 | return REGULATOR_MODE_IDLE; | |
107 | } | |
108 | ||
109 | static int wm831x_gp_ldo_set_mode(struct regulator_dev *rdev, | |
110 | unsigned int mode) | |
111 | { | |
112 | struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); | |
113 | struct wm831x *wm831x = ldo->wm831x; | |
114 | int ctrl_reg = ldo->base + WM831X_LDO_CONTROL; | |
115 | int on_reg = ldo->base + WM831X_LDO_ON_CONTROL; | |
116 | int ret; | |
117 | ||
118 | ||
119 | switch (mode) { | |
120 | case REGULATOR_MODE_NORMAL: | |
121 | ret = wm831x_set_bits(wm831x, on_reg, | |
122 | WM831X_LDO1_ON_MODE, 0); | |
123 | if (ret < 0) | |
124 | return ret; | |
125 | break; | |
126 | ||
127 | case REGULATOR_MODE_IDLE: | |
128 | ret = wm831x_set_bits(wm831x, ctrl_reg, | |
e260999c | 129 | WM831X_LDO1_LP_MODE, 0); |
d1c6b4fe MB |
130 | if (ret < 0) |
131 | return ret; | |
132 | ||
133 | ret = wm831x_set_bits(wm831x, on_reg, | |
134 | WM831X_LDO1_ON_MODE, | |
135 | WM831X_LDO1_ON_MODE); | |
136 | if (ret < 0) | |
137 | return ret; | |
e260999c | 138 | break; |
d1c6b4fe MB |
139 | |
140 | case REGULATOR_MODE_STANDBY: | |
141 | ret = wm831x_set_bits(wm831x, ctrl_reg, | |
e260999c AL |
142 | WM831X_LDO1_LP_MODE, |
143 | WM831X_LDO1_LP_MODE); | |
d1c6b4fe MB |
144 | if (ret < 0) |
145 | return ret; | |
146 | ||
147 | ret = wm831x_set_bits(wm831x, on_reg, | |
148 | WM831X_LDO1_ON_MODE, | |
149 | WM831X_LDO1_ON_MODE); | |
150 | if (ret < 0) | |
151 | return ret; | |
152 | break; | |
153 | ||
154 | default: | |
155 | return -EINVAL; | |
156 | } | |
157 | ||
158 | return 0; | |
159 | } | |
160 | ||
161 | static int wm831x_gp_ldo_get_status(struct regulator_dev *rdev) | |
162 | { | |
163 | struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); | |
164 | struct wm831x *wm831x = ldo->wm831x; | |
165 | int mask = 1 << rdev_get_id(rdev); | |
166 | int ret; | |
167 | ||
168 | /* Is the regulator on? */ | |
169 | ret = wm831x_reg_read(wm831x, WM831X_LDO_STATUS); | |
170 | if (ret < 0) | |
171 | return ret; | |
172 | if (!(ret & mask)) | |
173 | return REGULATOR_STATUS_OFF; | |
174 | ||
175 | /* Is it reporting under voltage? */ | |
176 | ret = wm831x_reg_read(wm831x, WM831X_LDO_UV_STATUS); | |
363506cd AL |
177 | if (ret < 0) |
178 | return ret; | |
d1c6b4fe MB |
179 | if (ret & mask) |
180 | return REGULATOR_STATUS_ERROR; | |
181 | ||
182 | ret = wm831x_gp_ldo_get_mode(rdev); | |
183 | if (ret < 0) | |
184 | return ret; | |
185 | else | |
186 | return regulator_mode_to_status(ret); | |
187 | } | |
188 | ||
189 | static unsigned int wm831x_gp_ldo_get_optimum_mode(struct regulator_dev *rdev, | |
190 | int input_uV, | |
191 | int output_uV, int load_uA) | |
192 | { | |
193 | if (load_uA < 20000) | |
194 | return REGULATOR_MODE_STANDBY; | |
195 | if (load_uA < 50000) | |
196 | return REGULATOR_MODE_IDLE; | |
197 | return REGULATOR_MODE_NORMAL; | |
198 | } | |
199 | ||
200 | ||
201 | static struct regulator_ops wm831x_gp_ldo_ops = { | |
5ff26a14 MB |
202 | .list_voltage = regulator_list_voltage_linear_range, |
203 | .map_voltage = regulator_map_voltage_linear_range, | |
ac663b47 | 204 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
0a479689 | 205 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
d1c6b4fe MB |
206 | .set_suspend_voltage = wm831x_gp_ldo_set_suspend_voltage, |
207 | .get_mode = wm831x_gp_ldo_get_mode, | |
208 | .set_mode = wm831x_gp_ldo_set_mode, | |
209 | .get_status = wm831x_gp_ldo_get_status, | |
210 | .get_optimum_mode = wm831x_gp_ldo_get_optimum_mode, | |
22c5fb6a MB |
211 | .get_bypass = regulator_get_bypass_regmap, |
212 | .set_bypass = regulator_set_bypass_regmap, | |
d1c6b4fe | 213 | |
ca8c361b MB |
214 | .is_enabled = regulator_is_enabled_regmap, |
215 | .enable = regulator_enable_regmap, | |
216 | .disable = regulator_disable_regmap, | |
d1c6b4fe MB |
217 | }; |
218 | ||
a5023574 | 219 | static int wm831x_gp_ldo_probe(struct platform_device *pdev) |
d1c6b4fe MB |
220 | { |
221 | struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent); | |
dff91d0b | 222 | struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev); |
c172708d | 223 | struct regulator_config config = { }; |
137a6354 | 224 | int id; |
d1c6b4fe MB |
225 | struct wm831x_ldo *ldo; |
226 | struct resource *res; | |
227 | int ret, irq; | |
228 | ||
137a6354 MB |
229 | if (pdata && pdata->wm831x_num) |
230 | id = (pdata->wm831x_num * 10) + 1; | |
231 | else | |
232 | id = 0; | |
233 | id = pdev->id - id; | |
234 | ||
d1c6b4fe MB |
235 | dev_dbg(&pdev->dev, "Probing LDO%d\n", id + 1); |
236 | ||
fded2f4f | 237 | ldo = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_ldo), GFP_KERNEL); |
fae3b836 | 238 | if (!ldo) |
d1c6b4fe | 239 | return -ENOMEM; |
d1c6b4fe MB |
240 | |
241 | ldo->wm831x = wm831x; | |
242 | ||
5656098e | 243 | res = platform_get_resource(pdev, IORESOURCE_REG, 0); |
d1c6b4fe | 244 | if (res == NULL) { |
5656098e | 245 | dev_err(&pdev->dev, "No REG resource\n"); |
d1c6b4fe MB |
246 | ret = -EINVAL; |
247 | goto err; | |
248 | } | |
249 | ldo->base = res->start; | |
250 | ||
251 | snprintf(ldo->name, sizeof(ldo->name), "LDO%d", id + 1); | |
252 | ldo->desc.name = ldo->name; | |
f1aba13f MB |
253 | |
254 | snprintf(ldo->supply_name, sizeof(ldo->supply_name), | |
255 | "LDO%dVDD", id + 1); | |
256 | ldo->desc.supply_name = ldo->supply_name; | |
257 | ||
d1c6b4fe MB |
258 | ldo->desc.id = id; |
259 | ldo->desc.type = REGULATOR_VOLTAGE; | |
5ff26a14 | 260 | ldo->desc.n_voltages = 32; |
d1c6b4fe MB |
261 | ldo->desc.ops = &wm831x_gp_ldo_ops; |
262 | ldo->desc.owner = THIS_MODULE; | |
ac663b47 MB |
263 | ldo->desc.vsel_reg = ldo->base + WM831X_LDO_ON_CONTROL; |
264 | ldo->desc.vsel_mask = WM831X_LDO1_ON_VSEL_MASK; | |
ca8c361b MB |
265 | ldo->desc.enable_reg = WM831X_LDO_ENABLE; |
266 | ldo->desc.enable_mask = 1 << id; | |
22c5fb6a MB |
267 | ldo->desc.bypass_reg = ldo->base; |
268 | ldo->desc.bypass_mask = WM831X_LDO1_SWI; | |
5ff26a14 MB |
269 | ldo->desc.linear_ranges = wm831x_gp_ldo_ranges; |
270 | ldo->desc.n_linear_ranges = ARRAY_SIZE(wm831x_gp_ldo_ranges); | |
d1c6b4fe | 271 | |
c172708d | 272 | config.dev = pdev->dev.parent; |
b7ca8788 MB |
273 | if (pdata) |
274 | config.init_data = pdata->ldo[id]; | |
c172708d | 275 | config.driver_data = ldo; |
ac663b47 | 276 | config.regmap = wm831x->regmap; |
c172708d | 277 | |
fc7c60e3 MB |
278 | ldo->regulator = devm_regulator_register(&pdev->dev, &ldo->desc, |
279 | &config); | |
d1c6b4fe MB |
280 | if (IS_ERR(ldo->regulator)) { |
281 | ret = PTR_ERR(ldo->regulator); | |
282 | dev_err(wm831x->dev, "Failed to register LDO%d: %d\n", | |
283 | id + 1, ret); | |
284 | goto err; | |
285 | } | |
286 | ||
cd99758b | 287 | irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "UV")); |
41c7a879 MB |
288 | ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, |
289 | wm831x_ldo_uv_irq, | |
290 | IRQF_TRIGGER_RISING, ldo->name, | |
291 | ldo); | |
d1c6b4fe MB |
292 | if (ret != 0) { |
293 | dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n", | |
294 | irq, ret); | |
fc7c60e3 | 295 | goto err; |
d1c6b4fe MB |
296 | } |
297 | ||
298 | platform_set_drvdata(pdev, ldo); | |
299 | ||
300 | return 0; | |
301 | ||
d1c6b4fe | 302 | err: |
d1c6b4fe MB |
303 | return ret; |
304 | } | |
305 | ||
d1c6b4fe MB |
306 | static struct platform_driver wm831x_gp_ldo_driver = { |
307 | .probe = wm831x_gp_ldo_probe, | |
d1c6b4fe MB |
308 | .driver = { |
309 | .name = "wm831x-ldo", | |
310 | }, | |
311 | }; | |
312 | ||
313 | /* | |
314 | * Analogue LDOs | |
315 | */ | |
316 | ||
5ff26a14 | 317 | static const struct regulator_linear_range wm831x_aldo_ranges[] = { |
8828bae4 AL |
318 | REGULATOR_LINEAR_RANGE(1000000, 0, 12, 50000), |
319 | REGULATOR_LINEAR_RANGE(1700000, 13, 31, 100000), | |
5ff26a14 | 320 | }; |
d1c6b4fe MB |
321 | |
322 | static int wm831x_aldo_set_suspend_voltage(struct regulator_dev *rdev, | |
323 | int uV) | |
324 | { | |
325 | struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); | |
0a479689 AL |
326 | struct wm831x *wm831x = ldo->wm831x; |
327 | int sel, reg = ldo->base + WM831X_LDO_SLEEP_CONTROL; | |
328 | ||
5ff26a14 | 329 | sel = regulator_map_voltage_linear_range(rdev, uV, uV); |
0a479689 AL |
330 | if (sel < 0) |
331 | return sel; | |
d1c6b4fe | 332 | |
0a479689 | 333 | return wm831x_set_bits(wm831x, reg, WM831X_LDO7_ON_VSEL_MASK, sel); |
d1c6b4fe MB |
334 | } |
335 | ||
d1c6b4fe MB |
336 | static unsigned int wm831x_aldo_get_mode(struct regulator_dev *rdev) |
337 | { | |
338 | struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); | |
339 | struct wm831x *wm831x = ldo->wm831x; | |
340 | int on_reg = ldo->base + WM831X_LDO_ON_CONTROL; | |
6f17c652 | 341 | int ret; |
d1c6b4fe MB |
342 | |
343 | ret = wm831x_reg_read(wm831x, on_reg); | |
344 | if (ret < 0) | |
345 | return 0; | |
346 | ||
347 | if (ret & WM831X_LDO7_ON_MODE) | |
348 | return REGULATOR_MODE_IDLE; | |
349 | else | |
350 | return REGULATOR_MODE_NORMAL; | |
351 | } | |
352 | ||
353 | static int wm831x_aldo_set_mode(struct regulator_dev *rdev, | |
354 | unsigned int mode) | |
355 | { | |
356 | struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); | |
357 | struct wm831x *wm831x = ldo->wm831x; | |
d1c6b4fe MB |
358 | int on_reg = ldo->base + WM831X_LDO_ON_CONTROL; |
359 | int ret; | |
360 | ||
361 | ||
362 | switch (mode) { | |
363 | case REGULATOR_MODE_NORMAL: | |
e841a36a | 364 | ret = wm831x_set_bits(wm831x, on_reg, WM831X_LDO7_ON_MODE, 0); |
d1c6b4fe MB |
365 | if (ret < 0) |
366 | return ret; | |
367 | break; | |
368 | ||
369 | case REGULATOR_MODE_IDLE: | |
e841a36a | 370 | ret = wm831x_set_bits(wm831x, on_reg, WM831X_LDO7_ON_MODE, |
d1c6b4fe MB |
371 | WM831X_LDO7_ON_MODE); |
372 | if (ret < 0) | |
373 | return ret; | |
374 | break; | |
375 | ||
376 | default: | |
377 | return -EINVAL; | |
378 | } | |
379 | ||
380 | return 0; | |
381 | } | |
382 | ||
383 | static int wm831x_aldo_get_status(struct regulator_dev *rdev) | |
384 | { | |
385 | struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); | |
386 | struct wm831x *wm831x = ldo->wm831x; | |
387 | int mask = 1 << rdev_get_id(rdev); | |
388 | int ret; | |
389 | ||
390 | /* Is the regulator on? */ | |
391 | ret = wm831x_reg_read(wm831x, WM831X_LDO_STATUS); | |
392 | if (ret < 0) | |
393 | return ret; | |
394 | if (!(ret & mask)) | |
395 | return REGULATOR_STATUS_OFF; | |
396 | ||
397 | /* Is it reporting under voltage? */ | |
398 | ret = wm831x_reg_read(wm831x, WM831X_LDO_UV_STATUS); | |
363506cd AL |
399 | if (ret < 0) |
400 | return ret; | |
d1c6b4fe MB |
401 | if (ret & mask) |
402 | return REGULATOR_STATUS_ERROR; | |
403 | ||
404 | ret = wm831x_aldo_get_mode(rdev); | |
405 | if (ret < 0) | |
406 | return ret; | |
407 | else | |
408 | return regulator_mode_to_status(ret); | |
409 | } | |
410 | ||
411 | static struct regulator_ops wm831x_aldo_ops = { | |
5ff26a14 MB |
412 | .list_voltage = regulator_list_voltage_linear_range, |
413 | .map_voltage = regulator_map_voltage_linear_range, | |
ac663b47 | 414 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
0a479689 | 415 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
d1c6b4fe MB |
416 | .set_suspend_voltage = wm831x_aldo_set_suspend_voltage, |
417 | .get_mode = wm831x_aldo_get_mode, | |
418 | .set_mode = wm831x_aldo_set_mode, | |
419 | .get_status = wm831x_aldo_get_status, | |
22c5fb6a MB |
420 | .set_bypass = regulator_set_bypass_regmap, |
421 | .get_bypass = regulator_get_bypass_regmap, | |
d1c6b4fe | 422 | |
ca8c361b MB |
423 | .is_enabled = regulator_is_enabled_regmap, |
424 | .enable = regulator_enable_regmap, | |
425 | .disable = regulator_disable_regmap, | |
d1c6b4fe MB |
426 | }; |
427 | ||
a5023574 | 428 | static int wm831x_aldo_probe(struct platform_device *pdev) |
d1c6b4fe MB |
429 | { |
430 | struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent); | |
dff91d0b | 431 | struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev); |
c172708d | 432 | struct regulator_config config = { }; |
137a6354 | 433 | int id; |
d1c6b4fe MB |
434 | struct wm831x_ldo *ldo; |
435 | struct resource *res; | |
436 | int ret, irq; | |
437 | ||
137a6354 MB |
438 | if (pdata && pdata->wm831x_num) |
439 | id = (pdata->wm831x_num * 10) + 1; | |
440 | else | |
441 | id = 0; | |
442 | id = pdev->id - id; | |
443 | ||
d1c6b4fe MB |
444 | dev_dbg(&pdev->dev, "Probing LDO%d\n", id + 1); |
445 | ||
fded2f4f | 446 | ldo = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_ldo), GFP_KERNEL); |
fae3b836 | 447 | if (!ldo) |
d1c6b4fe | 448 | return -ENOMEM; |
d1c6b4fe MB |
449 | |
450 | ldo->wm831x = wm831x; | |
451 | ||
5656098e | 452 | res = platform_get_resource(pdev, IORESOURCE_REG, 0); |
d1c6b4fe | 453 | if (res == NULL) { |
5656098e | 454 | dev_err(&pdev->dev, "No REG resource\n"); |
d1c6b4fe MB |
455 | ret = -EINVAL; |
456 | goto err; | |
457 | } | |
458 | ldo->base = res->start; | |
459 | ||
460 | snprintf(ldo->name, sizeof(ldo->name), "LDO%d", id + 1); | |
461 | ldo->desc.name = ldo->name; | |
f1aba13f MB |
462 | |
463 | snprintf(ldo->supply_name, sizeof(ldo->supply_name), | |
464 | "LDO%dVDD", id + 1); | |
465 | ldo->desc.supply_name = ldo->supply_name; | |
466 | ||
d1c6b4fe MB |
467 | ldo->desc.id = id; |
468 | ldo->desc.type = REGULATOR_VOLTAGE; | |
5ff26a14 MB |
469 | ldo->desc.n_voltages = 32; |
470 | ldo->desc.linear_ranges = wm831x_aldo_ranges; | |
471 | ldo->desc.n_linear_ranges = ARRAY_SIZE(wm831x_aldo_ranges); | |
d1c6b4fe MB |
472 | ldo->desc.ops = &wm831x_aldo_ops; |
473 | ldo->desc.owner = THIS_MODULE; | |
ac663b47 MB |
474 | ldo->desc.vsel_reg = ldo->base + WM831X_LDO_ON_CONTROL; |
475 | ldo->desc.vsel_mask = WM831X_LDO7_ON_VSEL_MASK; | |
ca8c361b MB |
476 | ldo->desc.enable_reg = WM831X_LDO_ENABLE; |
477 | ldo->desc.enable_mask = 1 << id; | |
22c5fb6a MB |
478 | ldo->desc.bypass_reg = ldo->base; |
479 | ldo->desc.bypass_mask = WM831X_LDO7_SWI; | |
d1c6b4fe | 480 | |
c172708d | 481 | config.dev = pdev->dev.parent; |
b7ca8788 MB |
482 | if (pdata) |
483 | config.init_data = pdata->ldo[id]; | |
c172708d | 484 | config.driver_data = ldo; |
ac663b47 | 485 | config.regmap = wm831x->regmap; |
c172708d | 486 | |
fc7c60e3 MB |
487 | ldo->regulator = devm_regulator_register(&pdev->dev, &ldo->desc, |
488 | &config); | |
d1c6b4fe MB |
489 | if (IS_ERR(ldo->regulator)) { |
490 | ret = PTR_ERR(ldo->regulator); | |
491 | dev_err(wm831x->dev, "Failed to register LDO%d: %d\n", | |
492 | id + 1, ret); | |
493 | goto err; | |
494 | } | |
495 | ||
cd99758b | 496 | irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "UV")); |
41c7a879 MB |
497 | ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, |
498 | wm831x_ldo_uv_irq, | |
499 | IRQF_TRIGGER_RISING, ldo->name, ldo); | |
d1c6b4fe MB |
500 | if (ret != 0) { |
501 | dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n", | |
502 | irq, ret); | |
fc7c60e3 | 503 | goto err; |
d1c6b4fe MB |
504 | } |
505 | ||
506 | platform_set_drvdata(pdev, ldo); | |
507 | ||
508 | return 0; | |
509 | ||
d1c6b4fe | 510 | err: |
d1c6b4fe MB |
511 | return ret; |
512 | } | |
513 | ||
d1c6b4fe MB |
514 | static struct platform_driver wm831x_aldo_driver = { |
515 | .probe = wm831x_aldo_probe, | |
d1c6b4fe MB |
516 | .driver = { |
517 | .name = "wm831x-aldo", | |
518 | }, | |
519 | }; | |
520 | ||
521 | /* | |
522 | * Alive LDO | |
523 | */ | |
524 | ||
525 | #define WM831X_ALIVE_LDO_MAX_SELECTOR 0xf | |
526 | ||
d1c6b4fe MB |
527 | static int wm831x_alive_ldo_set_suspend_voltage(struct regulator_dev *rdev, |
528 | int uV) | |
529 | { | |
530 | struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); | |
0a479689 AL |
531 | struct wm831x *wm831x = ldo->wm831x; |
532 | int sel, reg = ldo->base + WM831X_ALIVE_LDO_SLEEP_CONTROL; | |
533 | ||
534 | sel = regulator_map_voltage_linear(rdev, uV, uV); | |
535 | if (sel < 0) | |
536 | return sel; | |
d1c6b4fe | 537 | |
0a479689 | 538 | return wm831x_set_bits(wm831x, reg, WM831X_LDO11_ON_VSEL_MASK, sel); |
d1c6b4fe MB |
539 | } |
540 | ||
d1c6b4fe MB |
541 | static int wm831x_alive_ldo_get_status(struct regulator_dev *rdev) |
542 | { | |
543 | struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); | |
544 | struct wm831x *wm831x = ldo->wm831x; | |
545 | int mask = 1 << rdev_get_id(rdev); | |
546 | int ret; | |
547 | ||
548 | /* Is the regulator on? */ | |
549 | ret = wm831x_reg_read(wm831x, WM831X_LDO_STATUS); | |
550 | if (ret < 0) | |
551 | return ret; | |
552 | if (ret & mask) | |
553 | return REGULATOR_STATUS_ON; | |
554 | else | |
555 | return REGULATOR_STATUS_OFF; | |
556 | } | |
557 | ||
558 | static struct regulator_ops wm831x_alive_ldo_ops = { | |
d31e954e | 559 | .list_voltage = regulator_list_voltage_linear, |
c2543b5f | 560 | .map_voltage = regulator_map_voltage_linear, |
ac663b47 | 561 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
0a479689 | 562 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
d1c6b4fe MB |
563 | .set_suspend_voltage = wm831x_alive_ldo_set_suspend_voltage, |
564 | .get_status = wm831x_alive_ldo_get_status, | |
565 | ||
ca8c361b MB |
566 | .is_enabled = regulator_is_enabled_regmap, |
567 | .enable = regulator_enable_regmap, | |
568 | .disable = regulator_disable_regmap, | |
d1c6b4fe MB |
569 | }; |
570 | ||
a5023574 | 571 | static int wm831x_alive_ldo_probe(struct platform_device *pdev) |
d1c6b4fe MB |
572 | { |
573 | struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent); | |
dff91d0b | 574 | struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev); |
c172708d | 575 | struct regulator_config config = { }; |
137a6354 | 576 | int id; |
d1c6b4fe MB |
577 | struct wm831x_ldo *ldo; |
578 | struct resource *res; | |
579 | int ret; | |
580 | ||
137a6354 MB |
581 | if (pdata && pdata->wm831x_num) |
582 | id = (pdata->wm831x_num * 10) + 1; | |
583 | else | |
584 | id = 0; | |
585 | id = pdev->id - id; | |
586 | ||
587 | ||
d1c6b4fe MB |
588 | dev_dbg(&pdev->dev, "Probing LDO%d\n", id + 1); |
589 | ||
fded2f4f | 590 | ldo = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_ldo), GFP_KERNEL); |
fae3b836 | 591 | if (!ldo) |
d1c6b4fe | 592 | return -ENOMEM; |
d1c6b4fe MB |
593 | |
594 | ldo->wm831x = wm831x; | |
595 | ||
5656098e | 596 | res = platform_get_resource(pdev, IORESOURCE_REG, 0); |
d1c6b4fe | 597 | if (res == NULL) { |
5656098e | 598 | dev_err(&pdev->dev, "No REG resource\n"); |
d1c6b4fe MB |
599 | ret = -EINVAL; |
600 | goto err; | |
601 | } | |
602 | ldo->base = res->start; | |
603 | ||
604 | snprintf(ldo->name, sizeof(ldo->name), "LDO%d", id + 1); | |
605 | ldo->desc.name = ldo->name; | |
f1aba13f MB |
606 | |
607 | snprintf(ldo->supply_name, sizeof(ldo->supply_name), | |
608 | "LDO%dVDD", id + 1); | |
609 | ldo->desc.supply_name = ldo->supply_name; | |
610 | ||
d1c6b4fe MB |
611 | ldo->desc.id = id; |
612 | ldo->desc.type = REGULATOR_VOLTAGE; | |
613 | ldo->desc.n_voltages = WM831X_ALIVE_LDO_MAX_SELECTOR + 1; | |
614 | ldo->desc.ops = &wm831x_alive_ldo_ops; | |
615 | ldo->desc.owner = THIS_MODULE; | |
ac663b47 MB |
616 | ldo->desc.vsel_reg = ldo->base + WM831X_ALIVE_LDO_ON_CONTROL; |
617 | ldo->desc.vsel_mask = WM831X_LDO11_ON_VSEL_MASK; | |
ca8c361b MB |
618 | ldo->desc.enable_reg = WM831X_LDO_ENABLE; |
619 | ldo->desc.enable_mask = 1 << id; | |
d31e954e MB |
620 | ldo->desc.min_uV = 800000; |
621 | ldo->desc.uV_step = 50000; | |
eefaa3c6 | 622 | ldo->desc.enable_time = 1000; |
d1c6b4fe | 623 | |
c172708d | 624 | config.dev = pdev->dev.parent; |
b7ca8788 MB |
625 | if (pdata) |
626 | config.init_data = pdata->ldo[id]; | |
c172708d | 627 | config.driver_data = ldo; |
ac663b47 | 628 | config.regmap = wm831x->regmap; |
c172708d | 629 | |
fc7c60e3 MB |
630 | ldo->regulator = devm_regulator_register(&pdev->dev, &ldo->desc, |
631 | &config); | |
d1c6b4fe MB |
632 | if (IS_ERR(ldo->regulator)) { |
633 | ret = PTR_ERR(ldo->regulator); | |
634 | dev_err(wm831x->dev, "Failed to register LDO%d: %d\n", | |
635 | id + 1, ret); | |
636 | goto err; | |
637 | } | |
638 | ||
639 | platform_set_drvdata(pdev, ldo); | |
640 | ||
641 | return 0; | |
642 | ||
643 | err: | |
d1c6b4fe MB |
644 | return ret; |
645 | } | |
646 | ||
d1c6b4fe MB |
647 | static struct platform_driver wm831x_alive_ldo_driver = { |
648 | .probe = wm831x_alive_ldo_probe, | |
d1c6b4fe MB |
649 | .driver = { |
650 | .name = "wm831x-alive-ldo", | |
651 | }, | |
652 | }; | |
653 | ||
654 | static int __init wm831x_ldo_init(void) | |
655 | { | |
656 | int ret; | |
657 | ||
658 | ret = platform_driver_register(&wm831x_gp_ldo_driver); | |
659 | if (ret != 0) | |
660 | pr_err("Failed to register WM831x GP LDO driver: %d\n", ret); | |
661 | ||
662 | ret = platform_driver_register(&wm831x_aldo_driver); | |
663 | if (ret != 0) | |
664 | pr_err("Failed to register WM831x ALDO driver: %d\n", ret); | |
665 | ||
666 | ret = platform_driver_register(&wm831x_alive_ldo_driver); | |
667 | if (ret != 0) | |
668 | pr_err("Failed to register WM831x alive LDO driver: %d\n", | |
669 | ret); | |
670 | ||
671 | return 0; | |
672 | } | |
673 | subsys_initcall(wm831x_ldo_init); | |
674 | ||
675 | static void __exit wm831x_ldo_exit(void) | |
676 | { | |
677 | platform_driver_unregister(&wm831x_alive_ldo_driver); | |
678 | platform_driver_unregister(&wm831x_aldo_driver); | |
679 | platform_driver_unregister(&wm831x_gp_ldo_driver); | |
680 | } | |
681 | module_exit(wm831x_ldo_exit); | |
682 | ||
683 | /* Module information */ | |
684 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); | |
685 | MODULE_DESCRIPTION("WM831x LDO driver"); | |
686 | MODULE_LICENSE("GPL"); | |
687 | MODULE_ALIAS("platform:wm831x-ldo"); | |
688 | MODULE_ALIAS("platform:wm831x-aldo"); | |
689 | MODULE_ALIAS("platform:wm831x-aliveldo"); |