Commit | Line | Data |
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3cad5fc8 AL |
1 | // SPDX-License-Identifier: GPL-2.0+ |
2 | // | |
3 | // wm831x-ldo.c -- LDO driver for the WM831x series | |
4 | // | |
5 | // Copyright 2009 Wolfson Microelectronics PLC. | |
6 | // | |
7 | // Author: Mark Brown <broonie@opensource.wolfsonmicro.com> | |
d1c6b4fe MB |
8 | |
9 | #include <linux/module.h> | |
10 | #include <linux/moduleparam.h> | |
11 | #include <linux/init.h> | |
12 | #include <linux/bitops.h> | |
13 | #include <linux/err.h> | |
14 | #include <linux/i2c.h> | |
15 | #include <linux/platform_device.h> | |
16 | #include <linux/regulator/driver.h> | |
5a0e3ad6 | 17 | #include <linux/slab.h> |
d1c6b4fe MB |
18 | |
19 | #include <linux/mfd/wm831x/core.h> | |
20 | #include <linux/mfd/wm831x/regulator.h> | |
21 | #include <linux/mfd/wm831x/pdata.h> | |
22 | ||
f1aba13f | 23 | #define WM831X_LDO_MAX_NAME 9 |
d1c6b4fe MB |
24 | |
25 | #define WM831X_LDO_CONTROL 0 | |
26 | #define WM831X_LDO_ON_CONTROL 1 | |
27 | #define WM831X_LDO_SLEEP_CONTROL 2 | |
28 | ||
29 | #define WM831X_ALIVE_LDO_ON_CONTROL 0 | |
30 | #define WM831X_ALIVE_LDO_SLEEP_CONTROL 1 | |
31 | ||
32 | struct wm831x_ldo { | |
33 | char name[WM831X_LDO_MAX_NAME]; | |
f1aba13f | 34 | char supply_name[WM831X_LDO_MAX_NAME]; |
d1c6b4fe MB |
35 | struct regulator_desc desc; |
36 | int base; | |
37 | struct wm831x *wm831x; | |
38 | struct regulator_dev *regulator; | |
39 | }; | |
40 | ||
41 | /* | |
42 | * Shared | |
43 | */ | |
44 | ||
d1c6b4fe MB |
45 | static irqreturn_t wm831x_ldo_uv_irq(int irq, void *data) |
46 | { | |
47 | struct wm831x_ldo *ldo = data; | |
48 | ||
49 | regulator_notifier_call_chain(ldo->regulator, | |
50 | REGULATOR_EVENT_UNDER_VOLTAGE, | |
51 | NULL); | |
52 | ||
53 | return IRQ_HANDLED; | |
54 | } | |
55 | ||
56 | /* | |
57 | * General purpose LDOs | |
58 | */ | |
59 | ||
60ab7f41 | 60 | static const struct linear_range wm831x_gp_ldo_ranges[] = { |
8828bae4 AL |
61 | REGULATOR_LINEAR_RANGE(900000, 0, 14, 50000), |
62 | REGULATOR_LINEAR_RANGE(1700000, 15, 31, 100000), | |
5ff26a14 | 63 | }; |
d1c6b4fe MB |
64 | |
65 | static int wm831x_gp_ldo_set_suspend_voltage(struct regulator_dev *rdev, | |
66 | int uV) | |
67 | { | |
68 | struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); | |
0a479689 AL |
69 | struct wm831x *wm831x = ldo->wm831x; |
70 | int sel, reg = ldo->base + WM831X_LDO_SLEEP_CONTROL; | |
d1c6b4fe | 71 | |
5ff26a14 | 72 | sel = regulator_map_voltage_linear_range(rdev, uV, uV); |
0a479689 AL |
73 | if (sel < 0) |
74 | return sel; | |
75 | ||
76 | return wm831x_set_bits(wm831x, reg, WM831X_LDO1_ON_VSEL_MASK, sel); | |
d1c6b4fe MB |
77 | } |
78 | ||
d1c6b4fe MB |
79 | static unsigned int wm831x_gp_ldo_get_mode(struct regulator_dev *rdev) |
80 | { | |
81 | struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); | |
82 | struct wm831x *wm831x = ldo->wm831x; | |
83 | int ctrl_reg = ldo->base + WM831X_LDO_CONTROL; | |
84 | int on_reg = ldo->base + WM831X_LDO_ON_CONTROL; | |
9a767d43 | 85 | int ret; |
d1c6b4fe MB |
86 | |
87 | ret = wm831x_reg_read(wm831x, on_reg); | |
88 | if (ret < 0) | |
9a767d43 | 89 | return ret; |
d1c6b4fe MB |
90 | |
91 | if (!(ret & WM831X_LDO1_ON_MODE)) | |
92 | return REGULATOR_MODE_NORMAL; | |
93 | ||
94 | ret = wm831x_reg_read(wm831x, ctrl_reg); | |
95 | if (ret < 0) | |
9a767d43 | 96 | return ret; |
d1c6b4fe MB |
97 | |
98 | if (ret & WM831X_LDO1_LP_MODE) | |
99 | return REGULATOR_MODE_STANDBY; | |
100 | else | |
101 | return REGULATOR_MODE_IDLE; | |
102 | } | |
103 | ||
104 | static int wm831x_gp_ldo_set_mode(struct regulator_dev *rdev, | |
105 | unsigned int mode) | |
106 | { | |
107 | struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); | |
108 | struct wm831x *wm831x = ldo->wm831x; | |
109 | int ctrl_reg = ldo->base + WM831X_LDO_CONTROL; | |
110 | int on_reg = ldo->base + WM831X_LDO_ON_CONTROL; | |
111 | int ret; | |
112 | ||
113 | ||
114 | switch (mode) { | |
115 | case REGULATOR_MODE_NORMAL: | |
116 | ret = wm831x_set_bits(wm831x, on_reg, | |
117 | WM831X_LDO1_ON_MODE, 0); | |
118 | if (ret < 0) | |
119 | return ret; | |
120 | break; | |
121 | ||
122 | case REGULATOR_MODE_IDLE: | |
123 | ret = wm831x_set_bits(wm831x, ctrl_reg, | |
e260999c | 124 | WM831X_LDO1_LP_MODE, 0); |
d1c6b4fe MB |
125 | if (ret < 0) |
126 | return ret; | |
127 | ||
128 | ret = wm831x_set_bits(wm831x, on_reg, | |
129 | WM831X_LDO1_ON_MODE, | |
130 | WM831X_LDO1_ON_MODE); | |
131 | if (ret < 0) | |
132 | return ret; | |
e260999c | 133 | break; |
d1c6b4fe MB |
134 | |
135 | case REGULATOR_MODE_STANDBY: | |
136 | ret = wm831x_set_bits(wm831x, ctrl_reg, | |
e260999c AL |
137 | WM831X_LDO1_LP_MODE, |
138 | WM831X_LDO1_LP_MODE); | |
d1c6b4fe MB |
139 | if (ret < 0) |
140 | return ret; | |
141 | ||
142 | ret = wm831x_set_bits(wm831x, on_reg, | |
143 | WM831X_LDO1_ON_MODE, | |
144 | WM831X_LDO1_ON_MODE); | |
145 | if (ret < 0) | |
146 | return ret; | |
147 | break; | |
148 | ||
149 | default: | |
150 | return -EINVAL; | |
151 | } | |
152 | ||
153 | return 0; | |
154 | } | |
155 | ||
156 | static int wm831x_gp_ldo_get_status(struct regulator_dev *rdev) | |
157 | { | |
158 | struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); | |
159 | struct wm831x *wm831x = ldo->wm831x; | |
160 | int mask = 1 << rdev_get_id(rdev); | |
161 | int ret; | |
162 | ||
163 | /* Is the regulator on? */ | |
164 | ret = wm831x_reg_read(wm831x, WM831X_LDO_STATUS); | |
165 | if (ret < 0) | |
166 | return ret; | |
167 | if (!(ret & mask)) | |
168 | return REGULATOR_STATUS_OFF; | |
169 | ||
170 | /* Is it reporting under voltage? */ | |
171 | ret = wm831x_reg_read(wm831x, WM831X_LDO_UV_STATUS); | |
363506cd AL |
172 | if (ret < 0) |
173 | return ret; | |
d1c6b4fe MB |
174 | if (ret & mask) |
175 | return REGULATOR_STATUS_ERROR; | |
176 | ||
177 | ret = wm831x_gp_ldo_get_mode(rdev); | |
178 | if (ret < 0) | |
179 | return ret; | |
180 | else | |
181 | return regulator_mode_to_status(ret); | |
182 | } | |
183 | ||
184 | static unsigned int wm831x_gp_ldo_get_optimum_mode(struct regulator_dev *rdev, | |
185 | int input_uV, | |
186 | int output_uV, int load_uA) | |
187 | { | |
188 | if (load_uA < 20000) | |
189 | return REGULATOR_MODE_STANDBY; | |
190 | if (load_uA < 50000) | |
191 | return REGULATOR_MODE_IDLE; | |
192 | return REGULATOR_MODE_NORMAL; | |
193 | } | |
194 | ||
195 | ||
b0d6dd3b | 196 | static const struct regulator_ops wm831x_gp_ldo_ops = { |
5ff26a14 MB |
197 | .list_voltage = regulator_list_voltage_linear_range, |
198 | .map_voltage = regulator_map_voltage_linear_range, | |
ac663b47 | 199 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
0a479689 | 200 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
d1c6b4fe MB |
201 | .set_suspend_voltage = wm831x_gp_ldo_set_suspend_voltage, |
202 | .get_mode = wm831x_gp_ldo_get_mode, | |
203 | .set_mode = wm831x_gp_ldo_set_mode, | |
204 | .get_status = wm831x_gp_ldo_get_status, | |
205 | .get_optimum_mode = wm831x_gp_ldo_get_optimum_mode, | |
22c5fb6a MB |
206 | .get_bypass = regulator_get_bypass_regmap, |
207 | .set_bypass = regulator_set_bypass_regmap, | |
d1c6b4fe | 208 | |
ca8c361b MB |
209 | .is_enabled = regulator_is_enabled_regmap, |
210 | .enable = regulator_enable_regmap, | |
211 | .disable = regulator_disable_regmap, | |
d1c6b4fe MB |
212 | }; |
213 | ||
a5023574 | 214 | static int wm831x_gp_ldo_probe(struct platform_device *pdev) |
d1c6b4fe MB |
215 | { |
216 | struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent); | |
dff91d0b | 217 | struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev); |
c172708d | 218 | struct regulator_config config = { }; |
137a6354 | 219 | int id; |
d1c6b4fe MB |
220 | struct wm831x_ldo *ldo; |
221 | struct resource *res; | |
222 | int ret, irq; | |
223 | ||
137a6354 MB |
224 | if (pdata && pdata->wm831x_num) |
225 | id = (pdata->wm831x_num * 10) + 1; | |
226 | else | |
227 | id = 0; | |
228 | id = pdev->id - id; | |
229 | ||
d1c6b4fe MB |
230 | dev_dbg(&pdev->dev, "Probing LDO%d\n", id + 1); |
231 | ||
fded2f4f | 232 | ldo = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_ldo), GFP_KERNEL); |
fae3b836 | 233 | if (!ldo) |
d1c6b4fe | 234 | return -ENOMEM; |
d1c6b4fe MB |
235 | |
236 | ldo->wm831x = wm831x; | |
237 | ||
5656098e | 238 | res = platform_get_resource(pdev, IORESOURCE_REG, 0); |
d1c6b4fe | 239 | if (res == NULL) { |
5656098e | 240 | dev_err(&pdev->dev, "No REG resource\n"); |
d1c6b4fe MB |
241 | ret = -EINVAL; |
242 | goto err; | |
243 | } | |
244 | ldo->base = res->start; | |
245 | ||
246 | snprintf(ldo->name, sizeof(ldo->name), "LDO%d", id + 1); | |
247 | ldo->desc.name = ldo->name; | |
f1aba13f MB |
248 | |
249 | snprintf(ldo->supply_name, sizeof(ldo->supply_name), | |
250 | "LDO%dVDD", id + 1); | |
251 | ldo->desc.supply_name = ldo->supply_name; | |
252 | ||
d1c6b4fe MB |
253 | ldo->desc.id = id; |
254 | ldo->desc.type = REGULATOR_VOLTAGE; | |
5ff26a14 | 255 | ldo->desc.n_voltages = 32; |
d1c6b4fe MB |
256 | ldo->desc.ops = &wm831x_gp_ldo_ops; |
257 | ldo->desc.owner = THIS_MODULE; | |
ac663b47 MB |
258 | ldo->desc.vsel_reg = ldo->base + WM831X_LDO_ON_CONTROL; |
259 | ldo->desc.vsel_mask = WM831X_LDO1_ON_VSEL_MASK; | |
ca8c361b MB |
260 | ldo->desc.enable_reg = WM831X_LDO_ENABLE; |
261 | ldo->desc.enable_mask = 1 << id; | |
22c5fb6a MB |
262 | ldo->desc.bypass_reg = ldo->base; |
263 | ldo->desc.bypass_mask = WM831X_LDO1_SWI; | |
5ff26a14 MB |
264 | ldo->desc.linear_ranges = wm831x_gp_ldo_ranges; |
265 | ldo->desc.n_linear_ranges = ARRAY_SIZE(wm831x_gp_ldo_ranges); | |
d1c6b4fe | 266 | |
c172708d | 267 | config.dev = pdev->dev.parent; |
b7ca8788 MB |
268 | if (pdata) |
269 | config.init_data = pdata->ldo[id]; | |
c172708d | 270 | config.driver_data = ldo; |
ac663b47 | 271 | config.regmap = wm831x->regmap; |
c172708d | 272 | |
fc7c60e3 MB |
273 | ldo->regulator = devm_regulator_register(&pdev->dev, &ldo->desc, |
274 | &config); | |
d1c6b4fe MB |
275 | if (IS_ERR(ldo->regulator)) { |
276 | ret = PTR_ERR(ldo->regulator); | |
277 | dev_err(wm831x->dev, "Failed to register LDO%d: %d\n", | |
278 | id + 1, ret); | |
279 | goto err; | |
280 | } | |
281 | ||
cd99758b | 282 | irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "UV")); |
41c7a879 MB |
283 | ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, |
284 | wm831x_ldo_uv_irq, | |
29454738 FE |
285 | IRQF_TRIGGER_RISING | IRQF_ONESHOT, |
286 | ldo->name, | |
41c7a879 | 287 | ldo); |
d1c6b4fe MB |
288 | if (ret != 0) { |
289 | dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n", | |
290 | irq, ret); | |
fc7c60e3 | 291 | goto err; |
d1c6b4fe MB |
292 | } |
293 | ||
294 | platform_set_drvdata(pdev, ldo); | |
295 | ||
296 | return 0; | |
297 | ||
d1c6b4fe | 298 | err: |
d1c6b4fe MB |
299 | return ret; |
300 | } | |
301 | ||
d1c6b4fe MB |
302 | static struct platform_driver wm831x_gp_ldo_driver = { |
303 | .probe = wm831x_gp_ldo_probe, | |
d1c6b4fe MB |
304 | .driver = { |
305 | .name = "wm831x-ldo", | |
306 | }, | |
307 | }; | |
308 | ||
309 | /* | |
310 | * Analogue LDOs | |
311 | */ | |
312 | ||
60ab7f41 | 313 | static const struct linear_range wm831x_aldo_ranges[] = { |
8828bae4 AL |
314 | REGULATOR_LINEAR_RANGE(1000000, 0, 12, 50000), |
315 | REGULATOR_LINEAR_RANGE(1700000, 13, 31, 100000), | |
5ff26a14 | 316 | }; |
d1c6b4fe MB |
317 | |
318 | static int wm831x_aldo_set_suspend_voltage(struct regulator_dev *rdev, | |
319 | int uV) | |
320 | { | |
321 | struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); | |
0a479689 AL |
322 | struct wm831x *wm831x = ldo->wm831x; |
323 | int sel, reg = ldo->base + WM831X_LDO_SLEEP_CONTROL; | |
324 | ||
5ff26a14 | 325 | sel = regulator_map_voltage_linear_range(rdev, uV, uV); |
0a479689 AL |
326 | if (sel < 0) |
327 | return sel; | |
d1c6b4fe | 328 | |
0a479689 | 329 | return wm831x_set_bits(wm831x, reg, WM831X_LDO7_ON_VSEL_MASK, sel); |
d1c6b4fe MB |
330 | } |
331 | ||
d1c6b4fe MB |
332 | static unsigned int wm831x_aldo_get_mode(struct regulator_dev *rdev) |
333 | { | |
334 | struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); | |
335 | struct wm831x *wm831x = ldo->wm831x; | |
336 | int on_reg = ldo->base + WM831X_LDO_ON_CONTROL; | |
6f17c652 | 337 | int ret; |
d1c6b4fe MB |
338 | |
339 | ret = wm831x_reg_read(wm831x, on_reg); | |
340 | if (ret < 0) | |
341 | return 0; | |
342 | ||
343 | if (ret & WM831X_LDO7_ON_MODE) | |
344 | return REGULATOR_MODE_IDLE; | |
345 | else | |
346 | return REGULATOR_MODE_NORMAL; | |
347 | } | |
348 | ||
349 | static int wm831x_aldo_set_mode(struct regulator_dev *rdev, | |
350 | unsigned int mode) | |
351 | { | |
352 | struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); | |
353 | struct wm831x *wm831x = ldo->wm831x; | |
d1c6b4fe MB |
354 | int on_reg = ldo->base + WM831X_LDO_ON_CONTROL; |
355 | int ret; | |
356 | ||
357 | ||
358 | switch (mode) { | |
359 | case REGULATOR_MODE_NORMAL: | |
e841a36a | 360 | ret = wm831x_set_bits(wm831x, on_reg, WM831X_LDO7_ON_MODE, 0); |
d1c6b4fe MB |
361 | if (ret < 0) |
362 | return ret; | |
363 | break; | |
364 | ||
365 | case REGULATOR_MODE_IDLE: | |
e841a36a | 366 | ret = wm831x_set_bits(wm831x, on_reg, WM831X_LDO7_ON_MODE, |
d1c6b4fe MB |
367 | WM831X_LDO7_ON_MODE); |
368 | if (ret < 0) | |
369 | return ret; | |
370 | break; | |
371 | ||
372 | default: | |
373 | return -EINVAL; | |
374 | } | |
375 | ||
376 | return 0; | |
377 | } | |
378 | ||
379 | static int wm831x_aldo_get_status(struct regulator_dev *rdev) | |
380 | { | |
381 | struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); | |
382 | struct wm831x *wm831x = ldo->wm831x; | |
383 | int mask = 1 << rdev_get_id(rdev); | |
384 | int ret; | |
385 | ||
386 | /* Is the regulator on? */ | |
387 | ret = wm831x_reg_read(wm831x, WM831X_LDO_STATUS); | |
388 | if (ret < 0) | |
389 | return ret; | |
390 | if (!(ret & mask)) | |
391 | return REGULATOR_STATUS_OFF; | |
392 | ||
393 | /* Is it reporting under voltage? */ | |
394 | ret = wm831x_reg_read(wm831x, WM831X_LDO_UV_STATUS); | |
363506cd AL |
395 | if (ret < 0) |
396 | return ret; | |
d1c6b4fe MB |
397 | if (ret & mask) |
398 | return REGULATOR_STATUS_ERROR; | |
399 | ||
400 | ret = wm831x_aldo_get_mode(rdev); | |
401 | if (ret < 0) | |
402 | return ret; | |
403 | else | |
404 | return regulator_mode_to_status(ret); | |
405 | } | |
406 | ||
b0d6dd3b | 407 | static const struct regulator_ops wm831x_aldo_ops = { |
5ff26a14 MB |
408 | .list_voltage = regulator_list_voltage_linear_range, |
409 | .map_voltage = regulator_map_voltage_linear_range, | |
ac663b47 | 410 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
0a479689 | 411 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
d1c6b4fe MB |
412 | .set_suspend_voltage = wm831x_aldo_set_suspend_voltage, |
413 | .get_mode = wm831x_aldo_get_mode, | |
414 | .set_mode = wm831x_aldo_set_mode, | |
415 | .get_status = wm831x_aldo_get_status, | |
22c5fb6a MB |
416 | .set_bypass = regulator_set_bypass_regmap, |
417 | .get_bypass = regulator_get_bypass_regmap, | |
d1c6b4fe | 418 | |
ca8c361b MB |
419 | .is_enabled = regulator_is_enabled_regmap, |
420 | .enable = regulator_enable_regmap, | |
421 | .disable = regulator_disable_regmap, | |
d1c6b4fe MB |
422 | }; |
423 | ||
a5023574 | 424 | static int wm831x_aldo_probe(struct platform_device *pdev) |
d1c6b4fe MB |
425 | { |
426 | struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent); | |
dff91d0b | 427 | struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev); |
c172708d | 428 | struct regulator_config config = { }; |
137a6354 | 429 | int id; |
d1c6b4fe MB |
430 | struct wm831x_ldo *ldo; |
431 | struct resource *res; | |
432 | int ret, irq; | |
433 | ||
137a6354 MB |
434 | if (pdata && pdata->wm831x_num) |
435 | id = (pdata->wm831x_num * 10) + 1; | |
436 | else | |
437 | id = 0; | |
438 | id = pdev->id - id; | |
439 | ||
d1c6b4fe MB |
440 | dev_dbg(&pdev->dev, "Probing LDO%d\n", id + 1); |
441 | ||
fded2f4f | 442 | ldo = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_ldo), GFP_KERNEL); |
fae3b836 | 443 | if (!ldo) |
d1c6b4fe | 444 | return -ENOMEM; |
d1c6b4fe MB |
445 | |
446 | ldo->wm831x = wm831x; | |
447 | ||
5656098e | 448 | res = platform_get_resource(pdev, IORESOURCE_REG, 0); |
d1c6b4fe | 449 | if (res == NULL) { |
5656098e | 450 | dev_err(&pdev->dev, "No REG resource\n"); |
d1c6b4fe MB |
451 | ret = -EINVAL; |
452 | goto err; | |
453 | } | |
454 | ldo->base = res->start; | |
455 | ||
456 | snprintf(ldo->name, sizeof(ldo->name), "LDO%d", id + 1); | |
457 | ldo->desc.name = ldo->name; | |
f1aba13f MB |
458 | |
459 | snprintf(ldo->supply_name, sizeof(ldo->supply_name), | |
460 | "LDO%dVDD", id + 1); | |
461 | ldo->desc.supply_name = ldo->supply_name; | |
462 | ||
d1c6b4fe MB |
463 | ldo->desc.id = id; |
464 | ldo->desc.type = REGULATOR_VOLTAGE; | |
5ff26a14 MB |
465 | ldo->desc.n_voltages = 32; |
466 | ldo->desc.linear_ranges = wm831x_aldo_ranges; | |
467 | ldo->desc.n_linear_ranges = ARRAY_SIZE(wm831x_aldo_ranges); | |
d1c6b4fe MB |
468 | ldo->desc.ops = &wm831x_aldo_ops; |
469 | ldo->desc.owner = THIS_MODULE; | |
ac663b47 MB |
470 | ldo->desc.vsel_reg = ldo->base + WM831X_LDO_ON_CONTROL; |
471 | ldo->desc.vsel_mask = WM831X_LDO7_ON_VSEL_MASK; | |
ca8c361b MB |
472 | ldo->desc.enable_reg = WM831X_LDO_ENABLE; |
473 | ldo->desc.enable_mask = 1 << id; | |
22c5fb6a MB |
474 | ldo->desc.bypass_reg = ldo->base; |
475 | ldo->desc.bypass_mask = WM831X_LDO7_SWI; | |
d1c6b4fe | 476 | |
c172708d | 477 | config.dev = pdev->dev.parent; |
b7ca8788 MB |
478 | if (pdata) |
479 | config.init_data = pdata->ldo[id]; | |
c172708d | 480 | config.driver_data = ldo; |
ac663b47 | 481 | config.regmap = wm831x->regmap; |
c172708d | 482 | |
fc7c60e3 MB |
483 | ldo->regulator = devm_regulator_register(&pdev->dev, &ldo->desc, |
484 | &config); | |
d1c6b4fe MB |
485 | if (IS_ERR(ldo->regulator)) { |
486 | ret = PTR_ERR(ldo->regulator); | |
487 | dev_err(wm831x->dev, "Failed to register LDO%d: %d\n", | |
488 | id + 1, ret); | |
489 | goto err; | |
490 | } | |
491 | ||
cd99758b | 492 | irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "UV")); |
41c7a879 MB |
493 | ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, |
494 | wm831x_ldo_uv_irq, | |
29454738 FE |
495 | IRQF_TRIGGER_RISING | IRQF_ONESHOT, |
496 | ldo->name, ldo); | |
d1c6b4fe MB |
497 | if (ret != 0) { |
498 | dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n", | |
499 | irq, ret); | |
fc7c60e3 | 500 | goto err; |
d1c6b4fe MB |
501 | } |
502 | ||
503 | platform_set_drvdata(pdev, ldo); | |
504 | ||
505 | return 0; | |
506 | ||
d1c6b4fe | 507 | err: |
d1c6b4fe MB |
508 | return ret; |
509 | } | |
510 | ||
d1c6b4fe MB |
511 | static struct platform_driver wm831x_aldo_driver = { |
512 | .probe = wm831x_aldo_probe, | |
d1c6b4fe MB |
513 | .driver = { |
514 | .name = "wm831x-aldo", | |
515 | }, | |
516 | }; | |
517 | ||
518 | /* | |
519 | * Alive LDO | |
520 | */ | |
521 | ||
522 | #define WM831X_ALIVE_LDO_MAX_SELECTOR 0xf | |
523 | ||
d1c6b4fe MB |
524 | static int wm831x_alive_ldo_set_suspend_voltage(struct regulator_dev *rdev, |
525 | int uV) | |
526 | { | |
527 | struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); | |
0a479689 AL |
528 | struct wm831x *wm831x = ldo->wm831x; |
529 | int sel, reg = ldo->base + WM831X_ALIVE_LDO_SLEEP_CONTROL; | |
530 | ||
531 | sel = regulator_map_voltage_linear(rdev, uV, uV); | |
532 | if (sel < 0) | |
533 | return sel; | |
d1c6b4fe | 534 | |
0a479689 | 535 | return wm831x_set_bits(wm831x, reg, WM831X_LDO11_ON_VSEL_MASK, sel); |
d1c6b4fe MB |
536 | } |
537 | ||
d1c6b4fe MB |
538 | static int wm831x_alive_ldo_get_status(struct regulator_dev *rdev) |
539 | { | |
540 | struct wm831x_ldo *ldo = rdev_get_drvdata(rdev); | |
541 | struct wm831x *wm831x = ldo->wm831x; | |
542 | int mask = 1 << rdev_get_id(rdev); | |
543 | int ret; | |
544 | ||
545 | /* Is the regulator on? */ | |
546 | ret = wm831x_reg_read(wm831x, WM831X_LDO_STATUS); | |
547 | if (ret < 0) | |
548 | return ret; | |
549 | if (ret & mask) | |
550 | return REGULATOR_STATUS_ON; | |
551 | else | |
552 | return REGULATOR_STATUS_OFF; | |
553 | } | |
554 | ||
b0d6dd3b | 555 | static const struct regulator_ops wm831x_alive_ldo_ops = { |
d31e954e | 556 | .list_voltage = regulator_list_voltage_linear, |
c2543b5f | 557 | .map_voltage = regulator_map_voltage_linear, |
ac663b47 | 558 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
0a479689 | 559 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
d1c6b4fe MB |
560 | .set_suspend_voltage = wm831x_alive_ldo_set_suspend_voltage, |
561 | .get_status = wm831x_alive_ldo_get_status, | |
562 | ||
ca8c361b MB |
563 | .is_enabled = regulator_is_enabled_regmap, |
564 | .enable = regulator_enable_regmap, | |
565 | .disable = regulator_disable_regmap, | |
d1c6b4fe MB |
566 | }; |
567 | ||
a5023574 | 568 | static int wm831x_alive_ldo_probe(struct platform_device *pdev) |
d1c6b4fe MB |
569 | { |
570 | struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent); | |
dff91d0b | 571 | struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev); |
c172708d | 572 | struct regulator_config config = { }; |
137a6354 | 573 | int id; |
d1c6b4fe MB |
574 | struct wm831x_ldo *ldo; |
575 | struct resource *res; | |
576 | int ret; | |
577 | ||
137a6354 MB |
578 | if (pdata && pdata->wm831x_num) |
579 | id = (pdata->wm831x_num * 10) + 1; | |
580 | else | |
581 | id = 0; | |
582 | id = pdev->id - id; | |
583 | ||
584 | ||
d1c6b4fe MB |
585 | dev_dbg(&pdev->dev, "Probing LDO%d\n", id + 1); |
586 | ||
fded2f4f | 587 | ldo = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_ldo), GFP_KERNEL); |
fae3b836 | 588 | if (!ldo) |
d1c6b4fe | 589 | return -ENOMEM; |
d1c6b4fe MB |
590 | |
591 | ldo->wm831x = wm831x; | |
592 | ||
5656098e | 593 | res = platform_get_resource(pdev, IORESOURCE_REG, 0); |
d1c6b4fe | 594 | if (res == NULL) { |
5656098e | 595 | dev_err(&pdev->dev, "No REG resource\n"); |
d1c6b4fe MB |
596 | ret = -EINVAL; |
597 | goto err; | |
598 | } | |
599 | ldo->base = res->start; | |
600 | ||
601 | snprintf(ldo->name, sizeof(ldo->name), "LDO%d", id + 1); | |
602 | ldo->desc.name = ldo->name; | |
f1aba13f MB |
603 | |
604 | snprintf(ldo->supply_name, sizeof(ldo->supply_name), | |
605 | "LDO%dVDD", id + 1); | |
606 | ldo->desc.supply_name = ldo->supply_name; | |
607 | ||
d1c6b4fe MB |
608 | ldo->desc.id = id; |
609 | ldo->desc.type = REGULATOR_VOLTAGE; | |
610 | ldo->desc.n_voltages = WM831X_ALIVE_LDO_MAX_SELECTOR + 1; | |
611 | ldo->desc.ops = &wm831x_alive_ldo_ops; | |
612 | ldo->desc.owner = THIS_MODULE; | |
ac663b47 MB |
613 | ldo->desc.vsel_reg = ldo->base + WM831X_ALIVE_LDO_ON_CONTROL; |
614 | ldo->desc.vsel_mask = WM831X_LDO11_ON_VSEL_MASK; | |
ca8c361b MB |
615 | ldo->desc.enable_reg = WM831X_LDO_ENABLE; |
616 | ldo->desc.enable_mask = 1 << id; | |
d31e954e MB |
617 | ldo->desc.min_uV = 800000; |
618 | ldo->desc.uV_step = 50000; | |
eefaa3c6 | 619 | ldo->desc.enable_time = 1000; |
d1c6b4fe | 620 | |
c172708d | 621 | config.dev = pdev->dev.parent; |
b7ca8788 MB |
622 | if (pdata) |
623 | config.init_data = pdata->ldo[id]; | |
c172708d | 624 | config.driver_data = ldo; |
ac663b47 | 625 | config.regmap = wm831x->regmap; |
c172708d | 626 | |
fc7c60e3 MB |
627 | ldo->regulator = devm_regulator_register(&pdev->dev, &ldo->desc, |
628 | &config); | |
d1c6b4fe MB |
629 | if (IS_ERR(ldo->regulator)) { |
630 | ret = PTR_ERR(ldo->regulator); | |
631 | dev_err(wm831x->dev, "Failed to register LDO%d: %d\n", | |
632 | id + 1, ret); | |
633 | goto err; | |
634 | } | |
635 | ||
636 | platform_set_drvdata(pdev, ldo); | |
637 | ||
638 | return 0; | |
639 | ||
640 | err: | |
d1c6b4fe MB |
641 | return ret; |
642 | } | |
643 | ||
d1c6b4fe MB |
644 | static struct platform_driver wm831x_alive_ldo_driver = { |
645 | .probe = wm831x_alive_ldo_probe, | |
d1c6b4fe MB |
646 | .driver = { |
647 | .name = "wm831x-alive-ldo", | |
648 | }, | |
649 | }; | |
650 | ||
92a513b7 TR |
651 | static struct platform_driver * const drivers[] = { |
652 | &wm831x_gp_ldo_driver, | |
653 | &wm831x_aldo_driver, | |
654 | &wm831x_alive_ldo_driver, | |
655 | }; | |
656 | ||
d1c6b4fe MB |
657 | static int __init wm831x_ldo_init(void) |
658 | { | |
92a513b7 | 659 | return platform_register_drivers(drivers, ARRAY_SIZE(drivers)); |
d1c6b4fe MB |
660 | } |
661 | subsys_initcall(wm831x_ldo_init); | |
662 | ||
663 | static void __exit wm831x_ldo_exit(void) | |
664 | { | |
92a513b7 | 665 | platform_unregister_drivers(drivers, ARRAY_SIZE(drivers)); |
d1c6b4fe MB |
666 | } |
667 | module_exit(wm831x_ldo_exit); | |
668 | ||
669 | /* Module information */ | |
670 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); | |
671 | MODULE_DESCRIPTION("WM831x LDO driver"); | |
672 | MODULE_LICENSE("GPL"); | |
673 | MODULE_ALIAS("platform:wm831x-ldo"); | |
674 | MODULE_ALIAS("platform:wm831x-aldo"); | |
675 | MODULE_ALIAS("platform:wm831x-aliveldo"); |