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1 | /* |
2 | * Regulator Driver for Freescale MC13783 PMIC | |
3 | * | |
4 | * Copyright (C) 2008 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | ||
11 | #include <linux/mfd/mc13783-private.h> | |
12 | #include <linux/regulator/machine.h> | |
13 | #include <linux/regulator/driver.h> | |
14 | #include <linux/platform_device.h> | |
15 | #include <linux/mfd/mc13783.h> | |
16 | #include <linux/kernel.h> | |
17 | #include <linux/init.h> | |
18 | #include <linux/err.h> | |
19 | ||
20 | struct mc13783_regulator { | |
21 | struct regulator_desc desc; | |
22 | int reg; | |
23 | int enable_bit; | |
24 | }; | |
25 | ||
26 | static struct regulator_ops mc13783_regulator_ops; | |
27 | ||
28 | static struct mc13783_regulator mc13783_regulators[] = { | |
29 | [MC13783_SW_SW3] = { | |
30 | .desc = { | |
31 | .name = "SW_SW3", | |
32 | .ops = &mc13783_regulator_ops, | |
33 | .type = REGULATOR_VOLTAGE, | |
34 | .id = MC13783_SW_SW3, | |
35 | .owner = THIS_MODULE, | |
36 | }, | |
37 | .reg = MC13783_REG_SWITCHERS_5, | |
38 | .enable_bit = MC13783_SWCTRL_SW3_EN, | |
39 | }, | |
40 | [MC13783_SW_PLL] = { | |
41 | .desc = { | |
42 | .name = "SW_PLL", | |
43 | .ops = &mc13783_regulator_ops, | |
44 | .type = REGULATOR_VOLTAGE, | |
45 | .id = MC13783_SW_PLL, | |
46 | .owner = THIS_MODULE, | |
47 | }, | |
48 | .reg = MC13783_REG_SWITCHERS_4, | |
49 | .enable_bit = MC13783_SWCTRL_PLL_EN, | |
50 | }, | |
51 | [MC13783_REGU_VAUDIO] = { | |
52 | .desc = { | |
53 | .name = "REGU_VAUDIO", | |
54 | .ops = &mc13783_regulator_ops, | |
55 | .type = REGULATOR_VOLTAGE, | |
56 | .id = MC13783_REGU_VAUDIO, | |
57 | .owner = THIS_MODULE, | |
58 | }, | |
59 | .reg = MC13783_REG_REGULATOR_MODE_0, | |
60 | .enable_bit = MC13783_REGCTRL_VAUDIO_EN, | |
61 | }, | |
62 | [MC13783_REGU_VIOHI] = { | |
63 | .desc = { | |
64 | .name = "REGU_VIOHI", | |
65 | .ops = &mc13783_regulator_ops, | |
66 | .type = REGULATOR_VOLTAGE, | |
67 | .id = MC13783_REGU_VIOHI, | |
68 | .owner = THIS_MODULE, | |
69 | }, | |
70 | .reg = MC13783_REG_REGULATOR_MODE_0, | |
71 | .enable_bit = MC13783_REGCTRL_VIOHI_EN, | |
72 | }, | |
73 | [MC13783_REGU_VIOLO] = { | |
74 | .desc = { | |
75 | .name = "REGU_VIOLO", | |
76 | .ops = &mc13783_regulator_ops, | |
77 | .type = REGULATOR_VOLTAGE, | |
78 | .id = MC13783_REGU_VIOLO, | |
79 | .owner = THIS_MODULE, | |
80 | }, | |
81 | .reg = MC13783_REG_REGULATOR_MODE_0, | |
82 | .enable_bit = MC13783_REGCTRL_VIOLO_EN, | |
83 | }, | |
84 | [MC13783_REGU_VDIG] = { | |
85 | .desc = { | |
86 | .name = "REGU_VDIG", | |
87 | .ops = &mc13783_regulator_ops, | |
88 | .type = REGULATOR_VOLTAGE, | |
89 | .id = MC13783_REGU_VDIG, | |
90 | .owner = THIS_MODULE, | |
91 | }, | |
92 | .reg = MC13783_REG_REGULATOR_MODE_0, | |
93 | .enable_bit = MC13783_REGCTRL_VDIG_EN, | |
94 | }, | |
95 | [MC13783_REGU_VGEN] = { | |
96 | .desc = { | |
97 | .name = "REGU_VGEN", | |
98 | .ops = &mc13783_regulator_ops, | |
99 | .type = REGULATOR_VOLTAGE, | |
100 | .id = MC13783_REGU_VGEN, | |
101 | .owner = THIS_MODULE, | |
102 | }, | |
103 | .reg = MC13783_REG_REGULATOR_MODE_0, | |
104 | .enable_bit = MC13783_REGCTRL_VGEN_EN, | |
105 | }, | |
106 | [MC13783_REGU_VRFDIG] = { | |
107 | .desc = { | |
108 | .name = "REGU_VRFDIG", | |
109 | .ops = &mc13783_regulator_ops, | |
110 | .type = REGULATOR_VOLTAGE, | |
111 | .id = MC13783_REGU_VRFDIG, | |
112 | .owner = THIS_MODULE, | |
113 | }, | |
114 | .reg = MC13783_REG_REGULATOR_MODE_0, | |
115 | .enable_bit = MC13783_REGCTRL_VRFDIG_EN, | |
116 | }, | |
117 | [MC13783_REGU_VRFREF] = { | |
118 | .desc = { | |
119 | .name = "REGU_VRFREF", | |
120 | .ops = &mc13783_regulator_ops, | |
121 | .type = REGULATOR_VOLTAGE, | |
122 | .id = MC13783_REGU_VRFREF, | |
123 | .owner = THIS_MODULE, | |
124 | }, | |
125 | .reg = MC13783_REG_REGULATOR_MODE_0, | |
126 | .enable_bit = MC13783_REGCTRL_VRFREF_EN, | |
127 | }, | |
128 | [MC13783_REGU_VRFCP] = { | |
129 | .desc = { | |
130 | .name = "REGU_VRFCP", | |
131 | .ops = &mc13783_regulator_ops, | |
132 | .type = REGULATOR_VOLTAGE, | |
133 | .id = MC13783_REGU_VRFCP, | |
134 | .owner = THIS_MODULE, | |
135 | }, | |
136 | .reg = MC13783_REG_REGULATOR_MODE_0, | |
137 | .enable_bit = MC13783_REGCTRL_VRFCP_EN, | |
138 | }, | |
139 | [MC13783_REGU_VSIM] = { | |
140 | .desc = { | |
141 | .name = "REGU_VSIM", | |
142 | .ops = &mc13783_regulator_ops, | |
143 | .type = REGULATOR_VOLTAGE, | |
144 | .id = MC13783_REGU_VSIM, | |
145 | .owner = THIS_MODULE, | |
146 | }, | |
147 | .reg = MC13783_REG_REGULATOR_MODE_1, | |
148 | .enable_bit = MC13783_REGCTRL_VSIM_EN, | |
149 | }, | |
150 | [MC13783_REGU_VESIM] = { | |
151 | .desc = { | |
152 | .name = "REGU_VESIM", | |
153 | .ops = &mc13783_regulator_ops, | |
154 | .type = REGULATOR_VOLTAGE, | |
155 | .id = MC13783_REGU_VESIM, | |
156 | .owner = THIS_MODULE, | |
157 | }, | |
158 | .reg = MC13783_REG_REGULATOR_MODE_1, | |
159 | .enable_bit = MC13783_REGCTRL_VESIM_EN, | |
160 | }, | |
161 | [MC13783_REGU_VCAM] = { | |
162 | .desc = { | |
163 | .name = "REGU_VCAM", | |
164 | .ops = &mc13783_regulator_ops, | |
165 | .type = REGULATOR_VOLTAGE, | |
166 | .id = MC13783_REGU_VCAM, | |
167 | .owner = THIS_MODULE, | |
168 | }, | |
169 | .reg = MC13783_REG_REGULATOR_MODE_1, | |
170 | .enable_bit = MC13783_REGCTRL_VCAM_EN, | |
171 | }, | |
172 | [MC13783_REGU_VRFBG] = { | |
173 | .desc = { | |
174 | .name = "REGU_VRFBG", | |
175 | .ops = &mc13783_regulator_ops, | |
176 | .type = REGULATOR_VOLTAGE, | |
177 | .id = MC13783_REGU_VRFBG, | |
178 | .owner = THIS_MODULE, | |
179 | }, | |
180 | .reg = MC13783_REG_REGULATOR_MODE_1, | |
181 | .enable_bit = MC13783_REGCTRL_VRFBG_EN, | |
182 | }, | |
183 | [MC13783_REGU_VVIB] = { | |
184 | .desc = { | |
185 | .name = "REGU_VVIB", | |
186 | .ops = &mc13783_regulator_ops, | |
187 | .type = REGULATOR_VOLTAGE, | |
188 | .id = MC13783_REGU_VVIB, | |
189 | .owner = THIS_MODULE, | |
190 | }, | |
191 | .reg = MC13783_REG_REGULATOR_MODE_1, | |
192 | .enable_bit = MC13783_REGCTRL_VVIB_EN, | |
193 | }, | |
194 | [MC13783_REGU_VRF1] = { | |
195 | .desc = { | |
196 | .name = "REGU_VRF1", | |
197 | .ops = &mc13783_regulator_ops, | |
198 | .type = REGULATOR_VOLTAGE, | |
199 | .id = MC13783_REGU_VRF1, | |
200 | .owner = THIS_MODULE, | |
201 | }, | |
202 | .reg = MC13783_REG_REGULATOR_MODE_1, | |
203 | .enable_bit = MC13783_REGCTRL_VRF1_EN, | |
204 | }, | |
205 | [MC13783_REGU_VRF2] = { | |
206 | .desc = { | |
207 | .name = "REGU_VRF2", | |
208 | .ops = &mc13783_regulator_ops, | |
209 | .type = REGULATOR_VOLTAGE, | |
210 | .id = MC13783_REGU_VRF2, | |
211 | .owner = THIS_MODULE, | |
212 | }, | |
213 | .reg = MC13783_REG_REGULATOR_MODE_1, | |
214 | .enable_bit = MC13783_REGCTRL_VRF2_EN, | |
215 | }, | |
216 | [MC13783_REGU_VMMC1] = { | |
217 | .desc = { | |
218 | .name = "REGU_VMMC1", | |
219 | .ops = &mc13783_regulator_ops, | |
220 | .type = REGULATOR_VOLTAGE, | |
221 | .id = MC13783_REGU_VMMC1, | |
222 | .owner = THIS_MODULE, | |
223 | }, | |
224 | .reg = MC13783_REG_REGULATOR_MODE_1, | |
225 | .enable_bit = MC13783_REGCTRL_VMMC1_EN, | |
226 | }, | |
227 | [MC13783_REGU_VMMC2] = { | |
228 | .desc = { | |
229 | .name = "REGU_VMMC2", | |
230 | .ops = &mc13783_regulator_ops, | |
231 | .type = REGULATOR_VOLTAGE, | |
232 | .id = MC13783_REGU_VMMC2, | |
233 | .owner = THIS_MODULE, | |
234 | }, | |
235 | .reg = MC13783_REG_REGULATOR_MODE_1, | |
236 | .enable_bit = MC13783_REGCTRL_VMMC2_EN, | |
237 | }, | |
238 | [MC13783_REGU_GPO1] = { | |
239 | .desc = { | |
240 | .name = "REGU_GPO1", | |
241 | .ops = &mc13783_regulator_ops, | |
242 | .type = REGULATOR_VOLTAGE, | |
243 | .id = MC13783_REGU_GPO1, | |
244 | .owner = THIS_MODULE, | |
245 | }, | |
246 | .reg = MC13783_REG_POWER_MISCELLANEOUS, | |
247 | .enable_bit = MC13783_REGCTRL_GPO1_EN, | |
248 | }, | |
249 | [MC13783_REGU_GPO2] = { | |
250 | .desc = { | |
251 | .name = "REGU_GPO2", | |
252 | .ops = &mc13783_regulator_ops, | |
253 | .type = REGULATOR_VOLTAGE, | |
254 | .id = MC13783_REGU_GPO2, | |
255 | .owner = THIS_MODULE, | |
256 | }, | |
257 | .reg = MC13783_REG_POWER_MISCELLANEOUS, | |
258 | .enable_bit = MC13783_REGCTRL_GPO2_EN, | |
259 | }, | |
260 | [MC13783_REGU_GPO3] = { | |
261 | .desc = { | |
262 | .name = "REGU_GPO3", | |
263 | .ops = &mc13783_regulator_ops, | |
264 | .type = REGULATOR_VOLTAGE, | |
265 | .id = MC13783_REGU_GPO3, | |
266 | .owner = THIS_MODULE, | |
267 | }, | |
268 | .reg = MC13783_REG_POWER_MISCELLANEOUS, | |
269 | .enable_bit = MC13783_REGCTRL_GPO3_EN, | |
270 | }, | |
271 | [MC13783_REGU_GPO4] = { | |
272 | .desc = { | |
273 | .name = "REGU_GPO4", | |
274 | .ops = &mc13783_regulator_ops, | |
275 | .type = REGULATOR_VOLTAGE, | |
276 | .id = MC13783_REGU_GPO4, | |
277 | .owner = THIS_MODULE, | |
278 | }, | |
279 | .reg = MC13783_REG_POWER_MISCELLANEOUS, | |
280 | .enable_bit = MC13783_REGCTRL_GPO4_EN, | |
281 | }, | |
282 | }; | |
283 | ||
284 | struct mc13783_priv { | |
285 | struct regulator_desc desc[ARRAY_SIZE(mc13783_regulators)]; | |
286 | struct mc13783 *mc13783; | |
287 | struct regulator_dev *regulators[0]; | |
288 | }; | |
289 | ||
290 | static int mc13783_enable(struct regulator_dev *rdev) | |
291 | { | |
292 | struct mc13783_priv *priv = rdev_get_drvdata(rdev); | |
293 | int id = rdev_get_id(rdev); | |
294 | ||
295 | dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id); | |
296 | ||
297 | return mc13783_set_bits(priv->mc13783, mc13783_regulators[id].reg, | |
298 | mc13783_regulators[id].enable_bit, | |
299 | mc13783_regulators[id].enable_bit); | |
300 | } | |
301 | ||
302 | static int mc13783_disable(struct regulator_dev *rdev) | |
303 | { | |
304 | struct mc13783_priv *priv = rdev_get_drvdata(rdev); | |
305 | int id = rdev_get_id(rdev); | |
306 | ||
307 | dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id); | |
308 | ||
309 | return mc13783_set_bits(priv->mc13783, mc13783_regulators[id].reg, | |
310 | mc13783_regulators[id].enable_bit, 0); | |
311 | } | |
312 | ||
313 | static int mc13783_is_enabled(struct regulator_dev *rdev) | |
314 | { | |
315 | struct mc13783_priv *priv = rdev_get_drvdata(rdev); | |
316 | int ret, id = rdev_get_id(rdev); | |
317 | unsigned int val; | |
318 | ||
319 | ret = mc13783_reg_read(priv->mc13783, mc13783_regulators[id].reg, &val); | |
320 | if (ret) | |
321 | return ret; | |
322 | ||
323 | return (val & mc13783_regulators[id].enable_bit) != 0; | |
324 | } | |
325 | ||
326 | static struct regulator_ops mc13783_regulator_ops = { | |
327 | .enable = mc13783_enable, | |
328 | .disable = mc13783_disable, | |
329 | .is_enabled = mc13783_is_enabled, | |
330 | }; | |
331 | ||
332 | static int __devinit mc13783_regulator_probe(struct platform_device *pdev) | |
333 | { | |
334 | struct mc13783_priv *priv; | |
335 | struct mc13783 *mc13783 = dev_get_drvdata(pdev->dev.parent); | |
336 | struct mc13783_regulator_init_data *init_data; | |
337 | int i, ret; | |
338 | ||
339 | dev_dbg(&pdev->dev, "mc13783_regulator_probe id %d\n", pdev->id); | |
340 | ||
341 | priv = kzalloc(sizeof(*priv) + mc13783->num_regulators * sizeof(void *), | |
342 | GFP_KERNEL); | |
343 | if (!priv) | |
344 | return -ENOMEM; | |
345 | ||
346 | priv->mc13783 = mc13783; | |
347 | ||
348 | for (i = 0; i < mc13783->num_regulators; i++) { | |
349 | init_data = &mc13783->regulators[i]; | |
350 | priv->regulators[i] = regulator_register( | |
351 | &mc13783_regulators[init_data->id].desc, | |
352 | &pdev->dev, init_data->init_data, priv); | |
353 | ||
354 | if (IS_ERR(priv->regulators[i])) { | |
355 | dev_err(&pdev->dev, "failed to register regulator %s\n", | |
356 | mc13783_regulators[i].desc.name); | |
357 | ret = PTR_ERR(priv->regulators[i]); | |
358 | goto err; | |
359 | } | |
360 | } | |
361 | ||
362 | platform_set_drvdata(pdev, priv); | |
363 | ||
364 | return 0; | |
365 | err: | |
366 | while (--i >= 0) | |
367 | regulator_unregister(priv->regulators[i]); | |
368 | ||
369 | kfree(priv); | |
370 | ||
371 | return ret; | |
372 | } | |
373 | ||
374 | static int __devexit mc13783_regulator_remove(struct platform_device *pdev) | |
375 | { | |
376 | struct mc13783_priv *priv = platform_get_drvdata(pdev); | |
377 | struct mc13783 *mc13783 = priv->mc13783; | |
378 | int i; | |
379 | ||
380 | for (i = 0; i < mc13783->num_regulators; i++) | |
381 | regulator_unregister(priv->regulators[i]); | |
382 | ||
383 | return 0; | |
384 | } | |
385 | ||
386 | static struct platform_driver mc13783_regulator_driver = { | |
387 | .driver = { | |
388 | .name = "mc13783-regulator", | |
389 | .owner = THIS_MODULE, | |
390 | }, | |
391 | .remove = __devexit_p(mc13783_regulator_remove), | |
392 | }; | |
393 | ||
394 | static int __init mc13783_regulator_init(void) | |
395 | { | |
396 | return platform_driver_probe(&mc13783_regulator_driver, | |
397 | mc13783_regulator_probe); | |
398 | } | |
399 | subsys_initcall(mc13783_regulator_init); | |
400 | ||
401 | static void __exit mc13783_regulator_exit(void) | |
402 | { | |
403 | platform_driver_unregister(&mc13783_regulator_driver); | |
404 | } | |
405 | module_exit(mc13783_regulator_exit); | |
406 | ||
407 | MODULE_LICENSE("GPL"); | |
408 | MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de"); | |
409 | MODULE_DESCRIPTION("Regulator Driver for Freescale MC13783 PMIC"); | |
410 | MODULE_ALIAS("platform:mc13783-regulator"); |