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dfc0c82b AL |
1 | // SPDX-License-Identifier: GPL-2.0+ |
2 | // | |
3 | // arizona-micsupp.c -- Microphone supply for Arizona devices | |
4 | // | |
5 | // Copyright 2012 Wolfson Microelectronics PLC. | |
6 | // | |
7 | // Author: Mark Brown <broonie@opensource.wolfsonmicro.com> | |
b667a45d 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> | |
6f1c9c57 | 14 | #include <linux/of.h> |
b667a45d MB |
15 | #include <linux/platform_device.h> |
16 | #include <linux/regulator/driver.h> | |
17 | #include <linux/regulator/machine.h> | |
36bcdf1b | 18 | #include <linux/regulator/of_regulator.h> |
b667a45d | 19 | #include <linux/slab.h> |
e6ed9058 MB |
20 | #include <linux/workqueue.h> |
21 | #include <sound/soc.h> | |
b667a45d MB |
22 | |
23 | #include <linux/mfd/arizona/core.h> | |
24 | #include <linux/mfd/arizona/pdata.h> | |
25 | #include <linux/mfd/arizona/registers.h> | |
26 | ||
7bd7916d RF |
27 | #include <linux/mfd/madera/core.h> |
28 | #include <linux/mfd/madera/pdata.h> | |
29 | #include <linux/mfd/madera/registers.h> | |
30 | ||
22161f3e RF |
31 | #include <linux/regulator/arizona-micsupp.h> |
32 | ||
b667a45d MB |
33 | struct arizona_micsupp { |
34 | struct regulator_dev *regulator; | |
e165983e RF |
35 | struct regmap *regmap; |
36 | struct snd_soc_dapm_context **dapm; | |
37 | unsigned int enable_reg; | |
38 | struct device *dev; | |
b667a45d MB |
39 | |
40 | struct regulator_consumer_supply supply; | |
41 | struct regulator_init_data init_data; | |
e6ed9058 MB |
42 | |
43 | struct work_struct check_cp_work; | |
b667a45d MB |
44 | }; |
45 | ||
e6ed9058 MB |
46 | static void arizona_micsupp_check_cp(struct work_struct *work) |
47 | { | |
48 | struct arizona_micsupp *micsupp = | |
49 | container_of(work, struct arizona_micsupp, check_cp_work); | |
e165983e RF |
50 | struct snd_soc_dapm_context *dapm = *micsupp->dapm; |
51 | struct snd_soc_component *component; | |
52 | unsigned int val; | |
e6ed9058 MB |
53 | int ret; |
54 | ||
e165983e | 55 | ret = regmap_read(micsupp->regmap, micsupp->enable_reg, &val); |
e6ed9058 | 56 | if (ret != 0) { |
e165983e RF |
57 | dev_err(micsupp->dev, |
58 | "Failed to read CP state: %d\n", ret); | |
e6ed9058 MB |
59 | return; |
60 | } | |
61 | ||
62 | if (dapm) { | |
e165983e RF |
63 | component = snd_soc_dapm_to_component(dapm); |
64 | ||
65 | if ((val & (ARIZONA_CPMIC_ENA | ARIZONA_CPMIC_BYPASS)) == | |
e6ed9058 | 66 | ARIZONA_CPMIC_ENA) |
98cf9965 RF |
67 | snd_soc_component_force_enable_pin(component, |
68 | "MICSUPP"); | |
e6ed9058 | 69 | else |
98cf9965 | 70 | snd_soc_component_disable_pin(component, "MICSUPP"); |
e6ed9058 MB |
71 | |
72 | snd_soc_dapm_sync(dapm); | |
73 | } | |
74 | } | |
75 | ||
76 | static int arizona_micsupp_enable(struct regulator_dev *rdev) | |
77 | { | |
78 | struct arizona_micsupp *micsupp = rdev_get_drvdata(rdev); | |
79 | int ret; | |
80 | ||
81 | ret = regulator_enable_regmap(rdev); | |
82 | ||
83 | if (ret == 0) | |
84 | schedule_work(&micsupp->check_cp_work); | |
85 | ||
86 | return ret; | |
87 | } | |
88 | ||
89 | static int arizona_micsupp_disable(struct regulator_dev *rdev) | |
90 | { | |
91 | struct arizona_micsupp *micsupp = rdev_get_drvdata(rdev); | |
92 | int ret; | |
93 | ||
94 | ret = regulator_disable_regmap(rdev); | |
95 | if (ret == 0) | |
96 | schedule_work(&micsupp->check_cp_work); | |
97 | ||
98 | return ret; | |
99 | } | |
100 | ||
101 | static int arizona_micsupp_set_bypass(struct regulator_dev *rdev, bool ena) | |
102 | { | |
103 | struct arizona_micsupp *micsupp = rdev_get_drvdata(rdev); | |
104 | int ret; | |
105 | ||
106 | ret = regulator_set_bypass_regmap(rdev, ena); | |
107 | if (ret == 0) | |
108 | schedule_work(&micsupp->check_cp_work); | |
109 | ||
110 | return ret; | |
111 | } | |
112 | ||
2773ead1 | 113 | static const struct regulator_ops arizona_micsupp_ops = { |
e6ed9058 MB |
114 | .enable = arizona_micsupp_enable, |
115 | .disable = arizona_micsupp_disable, | |
b667a45d MB |
116 | .is_enabled = regulator_is_enabled_regmap, |
117 | ||
71979aa3 CK |
118 | .list_voltage = regulator_list_voltage_linear_range, |
119 | .map_voltage = regulator_map_voltage_linear_range, | |
b667a45d MB |
120 | |
121 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
122 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
e477ce07 MB |
123 | |
124 | .get_bypass = regulator_get_bypass_regmap, | |
e6ed9058 | 125 | .set_bypass = arizona_micsupp_set_bypass, |
b667a45d MB |
126 | }; |
127 | ||
71979aa3 CK |
128 | static const struct regulator_linear_range arizona_micsupp_ranges[] = { |
129 | REGULATOR_LINEAR_RANGE(1700000, 0, 0x1e, 50000), | |
130 | REGULATOR_LINEAR_RANGE(3300000, 0x1f, 0x1f, 0), | |
131 | }; | |
132 | ||
b667a45d MB |
133 | static const struct regulator_desc arizona_micsupp = { |
134 | .name = "MICVDD", | |
135 | .supply_name = "CPVDD", | |
136 | .type = REGULATOR_VOLTAGE, | |
71979aa3 | 137 | .n_voltages = 32, |
b667a45d MB |
138 | .ops = &arizona_micsupp_ops, |
139 | ||
140 | .vsel_reg = ARIZONA_LDO2_CONTROL_1, | |
141 | .vsel_mask = ARIZONA_LDO2_VSEL_MASK, | |
142 | .enable_reg = ARIZONA_MIC_CHARGE_PUMP_1, | |
143 | .enable_mask = ARIZONA_CPMIC_ENA, | |
e477ce07 MB |
144 | .bypass_reg = ARIZONA_MIC_CHARGE_PUMP_1, |
145 | .bypass_mask = ARIZONA_CPMIC_BYPASS, | |
b667a45d | 146 | |
71979aa3 CK |
147 | .linear_ranges = arizona_micsupp_ranges, |
148 | .n_linear_ranges = ARRAY_SIZE(arizona_micsupp_ranges), | |
149 | ||
95072818 MB |
150 | .enable_time = 3000, |
151 | ||
b667a45d MB |
152 | .owner = THIS_MODULE, |
153 | }; | |
154 | ||
d2e7491e CK |
155 | static const struct regulator_linear_range arizona_micsupp_ext_ranges[] = { |
156 | REGULATOR_LINEAR_RANGE(900000, 0, 0x14, 25000), | |
157 | REGULATOR_LINEAR_RANGE(1500000, 0x15, 0x27, 100000), | |
158 | }; | |
159 | ||
160 | static const struct regulator_desc arizona_micsupp_ext = { | |
161 | .name = "MICVDD", | |
162 | .supply_name = "CPVDD", | |
163 | .type = REGULATOR_VOLTAGE, | |
164 | .n_voltages = 40, | |
165 | .ops = &arizona_micsupp_ops, | |
166 | ||
167 | .vsel_reg = ARIZONA_LDO2_CONTROL_1, | |
168 | .vsel_mask = ARIZONA_LDO2_VSEL_MASK, | |
169 | .enable_reg = ARIZONA_MIC_CHARGE_PUMP_1, | |
170 | .enable_mask = ARIZONA_CPMIC_ENA, | |
171 | .bypass_reg = ARIZONA_MIC_CHARGE_PUMP_1, | |
172 | .bypass_mask = ARIZONA_CPMIC_BYPASS, | |
173 | ||
174 | .linear_ranges = arizona_micsupp_ext_ranges, | |
175 | .n_linear_ranges = ARRAY_SIZE(arizona_micsupp_ext_ranges), | |
176 | ||
177 | .enable_time = 3000, | |
178 | ||
179 | .owner = THIS_MODULE, | |
180 | }; | |
181 | ||
b667a45d MB |
182 | static const struct regulator_init_data arizona_micsupp_default = { |
183 | .constraints = { | |
184 | .valid_ops_mask = REGULATOR_CHANGE_STATUS | | |
9fc50a2e MB |
185 | REGULATOR_CHANGE_VOLTAGE | |
186 | REGULATOR_CHANGE_BYPASS, | |
b667a45d MB |
187 | .min_uV = 1700000, |
188 | .max_uV = 3300000, | |
189 | }, | |
190 | ||
191 | .num_consumer_supplies = 1, | |
192 | }; | |
193 | ||
d2e7491e CK |
194 | static const struct regulator_init_data arizona_micsupp_ext_default = { |
195 | .constraints = { | |
196 | .valid_ops_mask = REGULATOR_CHANGE_STATUS | | |
197 | REGULATOR_CHANGE_VOLTAGE | | |
198 | REGULATOR_CHANGE_BYPASS, | |
199 | .min_uV = 900000, | |
200 | .max_uV = 3300000, | |
201 | }, | |
202 | ||
203 | .num_consumer_supplies = 1, | |
204 | }; | |
205 | ||
7bd7916d RF |
206 | static const struct regulator_desc madera_micsupp = { |
207 | .name = "MICVDD", | |
208 | .supply_name = "CPVDD1", | |
209 | .type = REGULATOR_VOLTAGE, | |
210 | .n_voltages = 40, | |
211 | .ops = &arizona_micsupp_ops, | |
212 | ||
213 | .vsel_reg = MADERA_LDO2_CONTROL_1, | |
214 | .vsel_mask = MADERA_LDO2_VSEL_MASK, | |
215 | .enable_reg = MADERA_MIC_CHARGE_PUMP_1, | |
216 | .enable_mask = MADERA_CPMIC_ENA, | |
217 | .bypass_reg = MADERA_MIC_CHARGE_PUMP_1, | |
218 | .bypass_mask = MADERA_CPMIC_BYPASS, | |
219 | ||
220 | .linear_ranges = arizona_micsupp_ext_ranges, | |
221 | .n_linear_ranges = ARRAY_SIZE(arizona_micsupp_ext_ranges), | |
222 | ||
223 | .enable_time = 3000, | |
224 | ||
225 | .owner = THIS_MODULE, | |
226 | }; | |
227 | ||
22161f3e | 228 | static int arizona_micsupp_of_get_pdata(struct arizona_micsupp_pdata *pdata, |
072e78b1 JMC |
229 | struct regulator_config *config, |
230 | const struct regulator_desc *desc) | |
36bcdf1b | 231 | { |
36bcdf1b CK |
232 | struct arizona_micsupp *micsupp = config->driver_data; |
233 | struct device_node *np; | |
234 | struct regulator_init_data *init_data; | |
235 | ||
22161f3e | 236 | np = of_get_child_by_name(config->dev->of_node, "micvdd"); |
36bcdf1b CK |
237 | |
238 | if (np) { | |
239 | config->of_node = np; | |
240 | ||
22161f3e | 241 | init_data = of_get_regulator_init_data(config->dev, np, desc); |
36bcdf1b CK |
242 | |
243 | if (init_data) { | |
244 | init_data->consumer_supplies = &micsupp->supply; | |
245 | init_data->num_consumer_supplies = 1; | |
246 | ||
22161f3e | 247 | pdata->init_data = init_data; |
36bcdf1b CK |
248 | } |
249 | } | |
250 | ||
251 | return 0; | |
252 | } | |
253 | ||
7d8d14b5 RF |
254 | static int arizona_micsupp_common_init(struct platform_device *pdev, |
255 | struct arizona_micsupp *micsupp, | |
256 | const struct regulator_desc *desc, | |
257 | struct arizona_micsupp_pdata *pdata) | |
b667a45d | 258 | { |
b667a45d | 259 | struct regulator_config config = { }; |
b667a45d MB |
260 | int ret; |
261 | ||
e6ed9058 | 262 | INIT_WORK(&micsupp->check_cp_work, arizona_micsupp_check_cp); |
b667a45d | 263 | |
b667a45d MB |
264 | micsupp->init_data.consumer_supplies = &micsupp->supply; |
265 | micsupp->supply.supply = "MICVDD"; | |
7d8d14b5 | 266 | micsupp->supply.dev_name = dev_name(micsupp->dev); |
e165983e | 267 | micsupp->enable_reg = desc->enable_reg; |
b667a45d | 268 | |
7d8d14b5 | 269 | config.dev = micsupp->dev; |
b667a45d | 270 | config.driver_data = micsupp; |
7d8d14b5 | 271 | config.regmap = micsupp->regmap; |
b667a45d | 272 | |
36bcdf1b | 273 | if (IS_ENABLED(CONFIG_OF)) { |
7d8d14b5 | 274 | if (!dev_get_platdata(micsupp->dev)) { |
22161f3e RF |
275 | ret = arizona_micsupp_of_get_pdata(pdata, &config, |
276 | desc); | |
36bcdf1b CK |
277 | if (ret < 0) |
278 | return ret; | |
279 | } | |
280 | } | |
281 | ||
22161f3e RF |
282 | if (pdata->init_data) |
283 | config.init_data = pdata->init_data; | |
b667a45d MB |
284 | else |
285 | config.init_data = &micsupp->init_data; | |
286 | ||
7d8d14b5 RF |
287 | /* Default to regulated mode */ |
288 | regmap_update_bits(micsupp->regmap, micsupp->enable_reg, | |
6dc027c9 MB |
289 | ARIZONA_CPMIC_BYPASS, 0); |
290 | ||
b6b7709c | 291 | micsupp->regulator = devm_regulator_register(&pdev->dev, |
d2e7491e | 292 | desc, |
b6b7709c | 293 | &config); |
a7b976ae CK |
294 | |
295 | of_node_put(config.of_node); | |
296 | ||
b667a45d MB |
297 | if (IS_ERR(micsupp->regulator)) { |
298 | ret = PTR_ERR(micsupp->regulator); | |
7d8d14b5 | 299 | dev_err(micsupp->dev, "Failed to register mic supply: %d\n", |
b667a45d MB |
300 | ret); |
301 | return ret; | |
302 | } | |
303 | ||
304 | platform_set_drvdata(pdev, micsupp); | |
305 | ||
306 | return 0; | |
307 | } | |
308 | ||
7d8d14b5 RF |
309 | static int arizona_micsupp_probe(struct platform_device *pdev) |
310 | { | |
311 | struct arizona *arizona = dev_get_drvdata(pdev->dev.parent); | |
312 | const struct regulator_desc *desc; | |
313 | struct arizona_micsupp *micsupp; | |
314 | ||
315 | micsupp = devm_kzalloc(&pdev->dev, sizeof(*micsupp), GFP_KERNEL); | |
316 | if (!micsupp) | |
317 | return -ENOMEM; | |
318 | ||
319 | micsupp->regmap = arizona->regmap; | |
320 | micsupp->dapm = &arizona->dapm; | |
321 | micsupp->dev = arizona->dev; | |
322 | ||
323 | /* | |
324 | * Since the chip usually supplies itself we provide some | |
325 | * default init_data for it. This will be overridden with | |
326 | * platform data if provided. | |
327 | */ | |
328 | switch (arizona->type) { | |
329 | case WM5110: | |
330 | case WM8280: | |
331 | desc = &arizona_micsupp_ext; | |
332 | micsupp->init_data = arizona_micsupp_ext_default; | |
333 | break; | |
334 | default: | |
335 | desc = &arizona_micsupp; | |
336 | micsupp->init_data = arizona_micsupp_default; | |
337 | break; | |
338 | } | |
339 | ||
340 | return arizona_micsupp_common_init(pdev, micsupp, desc, | |
341 | &arizona->pdata.micvdd); | |
342 | } | |
343 | ||
7bd7916d RF |
344 | static int madera_micsupp_probe(struct platform_device *pdev) |
345 | { | |
346 | struct madera *madera = dev_get_drvdata(pdev->dev.parent); | |
347 | struct arizona_micsupp *micsupp; | |
348 | ||
349 | micsupp = devm_kzalloc(&pdev->dev, sizeof(*micsupp), GFP_KERNEL); | |
350 | if (!micsupp) | |
351 | return -ENOMEM; | |
352 | ||
353 | micsupp->regmap = madera->regmap; | |
354 | micsupp->dapm = &madera->dapm; | |
355 | micsupp->dev = madera->dev; | |
356 | micsupp->init_data = arizona_micsupp_ext_default; | |
357 | ||
358 | return arizona_micsupp_common_init(pdev, micsupp, &madera_micsupp, | |
359 | &madera->pdata.micvdd); | |
360 | } | |
361 | ||
b667a45d MB |
362 | static struct platform_driver arizona_micsupp_driver = { |
363 | .probe = arizona_micsupp_probe, | |
b667a45d MB |
364 | .driver = { |
365 | .name = "arizona-micsupp", | |
b667a45d MB |
366 | }, |
367 | }; | |
368 | ||
7bd7916d RF |
369 | static struct platform_driver madera_micsupp_driver = { |
370 | .probe = madera_micsupp_probe, | |
371 | .driver = { | |
372 | .name = "madera-micsupp", | |
373 | }, | |
374 | }; | |
375 | ||
376 | static struct platform_driver * const arizona_micsupp_drivers[] = { | |
377 | &arizona_micsupp_driver, | |
378 | &madera_micsupp_driver, | |
379 | }; | |
380 | ||
381 | static int __init arizona_micsupp_init(void) | |
382 | { | |
383 | return platform_register_drivers(arizona_micsupp_drivers, | |
384 | ARRAY_SIZE(arizona_micsupp_drivers)); | |
385 | } | |
386 | module_init(arizona_micsupp_init); | |
387 | ||
388 | static void __exit arizona_micsupp_exit(void) | |
389 | { | |
390 | platform_unregister_drivers(arizona_micsupp_drivers, | |
391 | ARRAY_SIZE(arizona_micsupp_drivers)); | |
392 | } | |
393 | module_exit(arizona_micsupp_exit); | |
b667a45d MB |
394 | |
395 | /* Module information */ | |
396 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); | |
397 | MODULE_DESCRIPTION("Arizona microphone supply driver"); | |
398 | MODULE_LICENSE("GPL"); | |
399 | MODULE_ALIAS("platform:arizona-micsupp"); | |
7bd7916d | 400 | MODULE_ALIAS("platform:madera-micsupp"); |