1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * wm8994-core.c -- Device access for Wolfson WM8994 |
4 | * |
5 | * Copyright 2009 Wolfson Microelectronics PLC. |
6 | * |
7 | * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> |
8 | */ |
9 | |
10 | #include <linux/kernel.h> |
11 | #include <linux/module.h> |
12 | #include <linux/slab.h> |
13 | #include <linux/i2c.h> |
14 | #include <linux/err.h> |
15 | #include <linux/delay.h> |
16 | #include <linux/mfd/core.h> |
17 | #include <linux/of.h> |
18 | #include <linux/pm_runtime.h> |
19 | #include <linux/regmap.h> |
20 | #include <linux/regulator/consumer.h> |
21 | #include <linux/regulator/machine.h> |
22 | |
23 | #include <linux/mfd/wm8994/core.h> |
24 | #include <linux/mfd/wm8994/pdata.h> |
25 | #include <linux/mfd/wm8994/registers.h> |
26 | |
27 | #include "wm8994.h" |
28 | |
29 | static const struct mfd_cell wm8994_regulator_devs[] = { |
30 | { |
31 | .name = "wm8994-ldo" , |
32 | .id = 0, |
33 | .pm_runtime_no_callbacks = true, |
34 | }, |
35 | { |
36 | .name = "wm8994-ldo" , |
37 | .id = 1, |
38 | .pm_runtime_no_callbacks = true, |
39 | }, |
40 | }; |
41 | |
42 | static const struct resource wm8994_codec_resources[] = { |
43 | { |
44 | .start = WM8994_IRQ_TEMP_SHUT, |
45 | .end = WM8994_IRQ_TEMP_WARN, |
46 | .flags = IORESOURCE_IRQ, |
47 | }, |
48 | }; |
49 | |
50 | static const struct resource wm8994_gpio_resources[] = { |
51 | { |
52 | .start = WM8994_IRQ_GPIO(1), |
53 | .end = WM8994_IRQ_GPIO(11), |
54 | .flags = IORESOURCE_IRQ, |
55 | }, |
56 | }; |
57 | |
58 | static const struct mfd_cell wm8994_devs[] = { |
59 | { |
60 | .name = "wm8994-codec" , |
61 | .num_resources = ARRAY_SIZE(wm8994_codec_resources), |
62 | .resources = wm8994_codec_resources, |
63 | }, |
64 | |
65 | { |
66 | .name = "wm8994-gpio" , |
67 | .num_resources = ARRAY_SIZE(wm8994_gpio_resources), |
68 | .resources = wm8994_gpio_resources, |
69 | .pm_runtime_no_callbacks = true, |
70 | }, |
71 | }; |
72 | |
73 | /* |
74 | * Supplies for the main bulk of CODEC; the LDO supplies are ignored |
75 | * and should be handled via the standard regulator API supply |
76 | * management. |
77 | */ |
78 | static const char *wm1811_main_supplies[] = { |
79 | "DBVDD1" , |
80 | "DBVDD2" , |
81 | "DBVDD3" , |
82 | "DCVDD" , |
83 | "AVDD1" , |
84 | "AVDD2" , |
85 | "CPVDD" , |
86 | "SPKVDD1" , |
87 | "SPKVDD2" , |
88 | }; |
89 | |
90 | static const char *wm8994_main_supplies[] = { |
91 | "DBVDD" , |
92 | "DCVDD" , |
93 | "AVDD1" , |
94 | "AVDD2" , |
95 | "CPVDD" , |
96 | "SPKVDD1" , |
97 | "SPKVDD2" , |
98 | }; |
99 | |
100 | static const char *wm8958_main_supplies[] = { |
101 | "DBVDD1" , |
102 | "DBVDD2" , |
103 | "DBVDD3" , |
104 | "DCVDD" , |
105 | "AVDD1" , |
106 | "AVDD2" , |
107 | "CPVDD" , |
108 | "SPKVDD1" , |
109 | "SPKVDD2" , |
110 | }; |
111 | |
112 | static int wm8994_suspend(struct device *dev) |
113 | { |
114 | struct wm8994 *wm8994 = dev_get_drvdata(dev); |
115 | int ret; |
116 | |
117 | /* Don't actually go through with the suspend if the CODEC is |
118 | * still active for accessory detect. */ |
119 | switch (wm8994->type) { |
120 | case WM8958: |
121 | case WM1811: |
122 | ret = wm8994_reg_read(wm8994, WM8958_MIC_DETECT_1); |
123 | if (ret < 0) { |
124 | dev_err(dev, "Failed to read power status: %d\n" , ret); |
125 | } else if (ret & WM8958_MICD_ENA) { |
126 | dev_dbg(dev, "CODEC still active, ignoring suspend\n" ); |
127 | return 0; |
128 | } |
129 | break; |
130 | default: |
131 | break; |
132 | } |
133 | |
134 | /* Disable LDO pulldowns while the device is suspended if we |
135 | * don't know that something will be driving them. */ |
136 | if (!wm8994->ldo_ena_always_driven) |
137 | wm8994_set_bits(wm8994, WM8994_PULL_CONTROL_2, |
138 | WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD, |
139 | WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD); |
140 | |
141 | /* Explicitly put the device into reset in case regulators |
142 | * don't get disabled in order to ensure consistent restart. |
143 | */ |
144 | wm8994_reg_write(wm8994, WM8994_SOFTWARE_RESET, |
145 | val: wm8994_reg_read(wm8994, WM8994_SOFTWARE_RESET)); |
146 | |
147 | regcache_mark_dirty(map: wm8994->regmap); |
148 | |
149 | /* Restore GPIO registers to prevent problems with mismatched |
150 | * pin configurations. |
151 | */ |
152 | ret = regcache_sync_region(map: wm8994->regmap, WM8994_GPIO_1, |
153 | WM8994_GPIO_11); |
154 | if (ret != 0) |
155 | dev_err(dev, "Failed to restore GPIO registers: %d\n" , ret); |
156 | |
157 | /* In case one of the GPIOs is used as a wake input. */ |
158 | ret = regcache_sync_region(map: wm8994->regmap, |
159 | WM8994_INTERRUPT_STATUS_1_MASK, |
160 | WM8994_INTERRUPT_STATUS_1_MASK); |
161 | if (ret != 0) |
162 | dev_err(dev, "Failed to restore interrupt mask: %d\n" , ret); |
163 | |
164 | regcache_cache_only(map: wm8994->regmap, enable: true); |
165 | wm8994->suspended = true; |
166 | |
167 | ret = regulator_bulk_disable(num_consumers: wm8994->num_supplies, |
168 | consumers: wm8994->supplies); |
169 | if (ret != 0) { |
170 | dev_err(dev, "Failed to disable supplies: %d\n" , ret); |
171 | return ret; |
172 | } |
173 | |
174 | return 0; |
175 | } |
176 | |
177 | static int wm8994_resume(struct device *dev) |
178 | { |
179 | struct wm8994 *wm8994 = dev_get_drvdata(dev); |
180 | int ret; |
181 | |
182 | /* We may have lied to the PM core about suspending */ |
183 | if (!wm8994->suspended) |
184 | return 0; |
185 | |
186 | ret = regulator_bulk_enable(num_consumers: wm8994->num_supplies, |
187 | consumers: wm8994->supplies); |
188 | if (ret != 0) { |
189 | dev_err(dev, "Failed to enable supplies: %d\n" , ret); |
190 | return ret; |
191 | } |
192 | |
193 | regcache_cache_only(map: wm8994->regmap, enable: false); |
194 | ret = regcache_sync(map: wm8994->regmap); |
195 | if (ret != 0) { |
196 | dev_err(dev, "Failed to restore register map: %d\n" , ret); |
197 | goto err_enable; |
198 | } |
199 | |
200 | /* Disable LDO pulldowns while the device is active */ |
201 | wm8994_set_bits(wm8994, WM8994_PULL_CONTROL_2, |
202 | WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD, |
203 | val: 0); |
204 | |
205 | wm8994->suspended = false; |
206 | |
207 | return 0; |
208 | |
209 | err_enable: |
210 | regulator_bulk_disable(num_consumers: wm8994->num_supplies, consumers: wm8994->supplies); |
211 | |
212 | return ret; |
213 | } |
214 | |
215 | #ifdef CONFIG_REGULATOR |
216 | static int wm8994_ldo_in_use(struct wm8994_pdata *pdata, int ldo) |
217 | { |
218 | struct wm8994_ldo_pdata *ldo_pdata; |
219 | |
220 | if (!pdata) |
221 | return 0; |
222 | |
223 | ldo_pdata = &pdata->ldo[ldo]; |
224 | |
225 | if (!ldo_pdata->init_data) |
226 | return 0; |
227 | |
228 | return ldo_pdata->init_data->num_consumer_supplies != 0; |
229 | } |
230 | #else |
231 | static int wm8994_ldo_in_use(struct wm8994_pdata *pdata, int ldo) |
232 | { |
233 | return 0; |
234 | } |
235 | #endif |
236 | |
237 | static const struct reg_sequence wm8994_revc_patch[] = { |
238 | { 0x102, 0x3 }, |
239 | { 0x56, 0x3 }, |
240 | { 0x817, 0x0 }, |
241 | { 0x102, 0x0 }, |
242 | }; |
243 | |
244 | static const struct reg_sequence wm8958_reva_patch[] = { |
245 | { 0x102, 0x3 }, |
246 | { 0xcb, 0x81 }, |
247 | { 0x817, 0x0 }, |
248 | { 0x102, 0x0 }, |
249 | }; |
250 | |
251 | static const struct reg_sequence wm1811_reva_patch[] = { |
252 | { 0x102, 0x3 }, |
253 | { 0x56, 0xc07 }, |
254 | { 0x5d, 0x7e }, |
255 | { 0x5e, 0x0 }, |
256 | { 0x102, 0x0 }, |
257 | }; |
258 | |
259 | #ifdef CONFIG_OF |
260 | static int wm8994_set_pdata_from_of(struct wm8994 *wm8994) |
261 | { |
262 | struct device_node *np = wm8994->dev->of_node; |
263 | struct wm8994_pdata *pdata = &wm8994->pdata; |
264 | int i; |
265 | |
266 | if (!np) |
267 | return 0; |
268 | |
269 | if (of_property_read_u32_array(np, propname: "wlf,gpio-cfg" , out_values: pdata->gpio_defaults, |
270 | ARRAY_SIZE(pdata->gpio_defaults)) >= 0) { |
271 | for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) { |
272 | if (wm8994->pdata.gpio_defaults[i] == 0) |
273 | pdata->gpio_defaults[i] |
274 | = WM8994_CONFIGURE_GPIO; |
275 | } |
276 | } |
277 | |
278 | of_property_read_u32_array(np, propname: "wlf,micbias-cfg" , out_values: pdata->micbias, |
279 | ARRAY_SIZE(pdata->micbias)); |
280 | |
281 | pdata->lineout1_diff = !of_property_read_bool(np, propname: "wlf,lineout1-se" ); |
282 | pdata->lineout2_diff = !of_property_read_bool(np, propname: "wlf,lineout2-se" ); |
283 | pdata->lineout1fb = of_property_read_bool(np, propname: "wlf,lineout1-feedback" ); |
284 | pdata->lineout2fb = of_property_read_bool(np, propname: "wlf,lineout2-feedback" ) || |
285 | of_property_read_bool(np, propname: "wlf,ldoena-always-driven" ); |
286 | |
287 | pdata->spkmode_pu = of_property_read_bool(np, propname: "wlf,spkmode-pu" ); |
288 | |
289 | pdata->csnaddr_pd = of_property_read_bool(np, propname: "wlf,csnaddr-pd" ); |
290 | |
291 | return 0; |
292 | } |
293 | #else |
294 | static int wm8994_set_pdata_from_of(struct wm8994 *wm8994) |
295 | { |
296 | return 0; |
297 | } |
298 | #endif |
299 | |
300 | /* |
301 | * Instantiate the generic non-control parts of the device. |
302 | */ |
303 | static int wm8994_device_init(struct wm8994 *wm8994, int irq) |
304 | { |
305 | struct wm8994_pdata *pdata; |
306 | struct regmap_config *regmap_config; |
307 | const struct reg_sequence *regmap_patch = NULL; |
308 | const char *devname; |
309 | int ret, i, patch_regs = 0; |
310 | int pulls = 0; |
311 | |
312 | if (dev_get_platdata(dev: wm8994->dev)) { |
313 | pdata = dev_get_platdata(dev: wm8994->dev); |
314 | wm8994->pdata = *pdata; |
315 | } |
316 | pdata = &wm8994->pdata; |
317 | |
318 | ret = wm8994_set_pdata_from_of(wm8994); |
319 | if (ret != 0) |
320 | return ret; |
321 | |
322 | /* Add the on-chip regulators first for bootstrapping */ |
323 | ret = mfd_add_devices(parent: wm8994->dev, id: 0, |
324 | cells: wm8994_regulator_devs, |
325 | ARRAY_SIZE(wm8994_regulator_devs), |
326 | NULL, irq_base: 0, NULL); |
327 | if (ret != 0) { |
328 | dev_err(wm8994->dev, "Failed to add children: %d\n" , ret); |
329 | goto err; |
330 | } |
331 | |
332 | switch (wm8994->type) { |
333 | case WM1811: |
334 | wm8994->num_supplies = ARRAY_SIZE(wm1811_main_supplies); |
335 | break; |
336 | case WM8994: |
337 | wm8994->num_supplies = ARRAY_SIZE(wm8994_main_supplies); |
338 | break; |
339 | case WM8958: |
340 | wm8994->num_supplies = ARRAY_SIZE(wm8958_main_supplies); |
341 | break; |
342 | default: |
343 | BUG(); |
344 | goto err; |
345 | } |
346 | |
347 | wm8994->supplies = devm_kcalloc(dev: wm8994->dev, |
348 | n: wm8994->num_supplies, |
349 | size: sizeof(struct regulator_bulk_data), |
350 | GFP_KERNEL); |
351 | if (!wm8994->supplies) { |
352 | ret = -ENOMEM; |
353 | goto err; |
354 | } |
355 | |
356 | switch (wm8994->type) { |
357 | case WM1811: |
358 | for (i = 0; i < ARRAY_SIZE(wm1811_main_supplies); i++) |
359 | wm8994->supplies[i].supply = wm1811_main_supplies[i]; |
360 | break; |
361 | case WM8994: |
362 | for (i = 0; i < ARRAY_SIZE(wm8994_main_supplies); i++) |
363 | wm8994->supplies[i].supply = wm8994_main_supplies[i]; |
364 | break; |
365 | case WM8958: |
366 | for (i = 0; i < ARRAY_SIZE(wm8958_main_supplies); i++) |
367 | wm8994->supplies[i].supply = wm8958_main_supplies[i]; |
368 | break; |
369 | default: |
370 | BUG(); |
371 | goto err; |
372 | } |
373 | |
374 | /* |
375 | * Can't use devres helper here as some of the supplies are provided by |
376 | * wm8994->dev's children (regulators) and those regulators are |
377 | * unregistered by the devres core before the supplies are freed. |
378 | */ |
379 | ret = regulator_bulk_get(dev: wm8994->dev, num_consumers: wm8994->num_supplies, |
380 | consumers: wm8994->supplies); |
381 | if (ret != 0) { |
382 | if (ret != -EPROBE_DEFER) |
383 | dev_err(wm8994->dev, "Failed to get supplies: %d\n" , |
384 | ret); |
385 | goto err; |
386 | } |
387 | |
388 | ret = regulator_bulk_enable(num_consumers: wm8994->num_supplies, consumers: wm8994->supplies); |
389 | if (ret != 0) { |
390 | dev_err(wm8994->dev, "Failed to enable supplies: %d\n" , ret); |
391 | goto err_regulator_free; |
392 | } |
393 | |
394 | ret = wm8994_reg_read(wm8994, WM8994_SOFTWARE_RESET); |
395 | if (ret < 0) { |
396 | dev_err(wm8994->dev, "Failed to read ID register\n" ); |
397 | goto err_enable; |
398 | } |
399 | switch (ret) { |
400 | case 0x1811: |
401 | devname = "WM1811" ; |
402 | if (wm8994->type != WM1811) |
403 | dev_warn(wm8994->dev, "Device registered as type %d\n" , |
404 | wm8994->type); |
405 | wm8994->type = WM1811; |
406 | break; |
407 | case 0x8994: |
408 | devname = "WM8994" ; |
409 | if (wm8994->type != WM8994) |
410 | dev_warn(wm8994->dev, "Device registered as type %d\n" , |
411 | wm8994->type); |
412 | wm8994->type = WM8994; |
413 | break; |
414 | case 0x8958: |
415 | devname = "WM8958" ; |
416 | if (wm8994->type != WM8958) |
417 | dev_warn(wm8994->dev, "Device registered as type %d\n" , |
418 | wm8994->type); |
419 | wm8994->type = WM8958; |
420 | break; |
421 | default: |
422 | dev_err(wm8994->dev, "Device is not a WM8994, ID is %x\n" , |
423 | ret); |
424 | ret = -EINVAL; |
425 | goto err_enable; |
426 | } |
427 | |
428 | ret = wm8994_reg_read(wm8994, WM8994_CHIP_REVISION); |
429 | if (ret < 0) { |
430 | dev_err(wm8994->dev, "Failed to read revision register: %d\n" , |
431 | ret); |
432 | goto err_enable; |
433 | } |
434 | wm8994->revision = ret & WM8994_CHIP_REV_MASK; |
435 | wm8994->cust_id = (ret & WM8994_CUST_ID_MASK) >> WM8994_CUST_ID_SHIFT; |
436 | |
437 | switch (wm8994->type) { |
438 | case WM8994: |
439 | switch (wm8994->revision) { |
440 | case 0: |
441 | case 1: |
442 | dev_warn(wm8994->dev, |
443 | "revision %c not fully supported\n" , |
444 | 'A' + wm8994->revision); |
445 | break; |
446 | case 2: |
447 | case 3: |
448 | default: |
449 | regmap_patch = wm8994_revc_patch; |
450 | patch_regs = ARRAY_SIZE(wm8994_revc_patch); |
451 | break; |
452 | } |
453 | break; |
454 | |
455 | case WM8958: |
456 | switch (wm8994->revision) { |
457 | case 0: |
458 | regmap_patch = wm8958_reva_patch; |
459 | patch_regs = ARRAY_SIZE(wm8958_reva_patch); |
460 | break; |
461 | default: |
462 | break; |
463 | } |
464 | break; |
465 | |
466 | case WM1811: |
467 | /* Revision C did not change the relevant layer */ |
468 | if (wm8994->revision > 1) |
469 | wm8994->revision++; |
470 | |
471 | regmap_patch = wm1811_reva_patch; |
472 | patch_regs = ARRAY_SIZE(wm1811_reva_patch); |
473 | break; |
474 | |
475 | default: |
476 | break; |
477 | } |
478 | |
479 | dev_info(wm8994->dev, "%s revision %c CUST_ID %02x\n" , devname, |
480 | 'A' + wm8994->revision, wm8994->cust_id); |
481 | |
482 | switch (wm8994->type) { |
483 | case WM1811: |
484 | regmap_config = &wm1811_regmap_config; |
485 | break; |
486 | case WM8994: |
487 | regmap_config = &wm8994_regmap_config; |
488 | break; |
489 | case WM8958: |
490 | regmap_config = &wm8958_regmap_config; |
491 | break; |
492 | default: |
493 | dev_err(wm8994->dev, "Unknown device type %d\n" , wm8994->type); |
494 | ret = -EINVAL; |
495 | goto err_enable; |
496 | } |
497 | |
498 | ret = regmap_reinit_cache(map: wm8994->regmap, config: regmap_config); |
499 | if (ret != 0) { |
500 | dev_err(wm8994->dev, "Failed to reinit register cache: %d\n" , |
501 | ret); |
502 | goto err_enable; |
503 | } |
504 | |
505 | /* Explicitly put the device into reset in case regulators |
506 | * don't get disabled in order to ensure we know the device |
507 | * state. |
508 | */ |
509 | ret = wm8994_reg_write(wm8994, WM8994_SOFTWARE_RESET, |
510 | val: wm8994_reg_read(wm8994, WM8994_SOFTWARE_RESET)); |
511 | if (ret != 0) { |
512 | dev_err(wm8994->dev, "Failed to reset device: %d\n" , ret); |
513 | goto err_enable; |
514 | } |
515 | |
516 | if (regmap_patch) { |
517 | ret = regmap_register_patch(map: wm8994->regmap, regs: regmap_patch, |
518 | num_regs: patch_regs); |
519 | if (ret != 0) { |
520 | dev_err(wm8994->dev, "Failed to register patch: %d\n" , |
521 | ret); |
522 | goto err_enable; |
523 | } |
524 | } |
525 | |
526 | wm8994->irq_base = pdata->irq_base; |
527 | wm8994->gpio_base = pdata->gpio_base; |
528 | |
529 | /* GPIO configuration is only applied if it's non-zero */ |
530 | for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) { |
531 | if (pdata->gpio_defaults[i]) { |
532 | wm8994_set_bits(wm8994, WM8994_GPIO_1 + i, |
533 | mask: 0xffff, val: pdata->gpio_defaults[i]); |
534 | } |
535 | } |
536 | |
537 | wm8994->ldo_ena_always_driven = pdata->ldo_ena_always_driven; |
538 | |
539 | if (pdata->spkmode_pu) |
540 | pulls |= WM8994_SPKMODE_PU; |
541 | if (pdata->csnaddr_pd) |
542 | pulls |= WM8994_CSNADDR_PD; |
543 | |
544 | /* Disable unneeded pulls */ |
545 | wm8994_set_bits(wm8994, WM8994_PULL_CONTROL_2, |
546 | WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD | |
547 | WM8994_SPKMODE_PU | WM8994_CSNADDR_PD, |
548 | val: pulls); |
549 | |
550 | /* In some system designs where the regulators are not in use, |
551 | * we can achieve a small reduction in leakage currents by |
552 | * floating LDO outputs. This bit makes no difference if the |
553 | * LDOs are enabled, it only affects cases where the LDOs were |
554 | * in operation and are then disabled. |
555 | */ |
556 | for (i = 0; i < WM8994_NUM_LDO_REGS; i++) { |
557 | if (wm8994_ldo_in_use(pdata, ldo: i)) |
558 | wm8994_set_bits(wm8994, WM8994_LDO_1 + i, |
559 | WM8994_LDO1_DISCH, WM8994_LDO1_DISCH); |
560 | else |
561 | wm8994_set_bits(wm8994, WM8994_LDO_1 + i, |
562 | WM8994_LDO1_DISCH, val: 0); |
563 | } |
564 | |
565 | wm8994_irq_init(wm8994); |
566 | |
567 | ret = mfd_add_devices(parent: wm8994->dev, id: -1, |
568 | cells: wm8994_devs, ARRAY_SIZE(wm8994_devs), |
569 | NULL, irq_base: 0, NULL); |
570 | if (ret != 0) { |
571 | dev_err(wm8994->dev, "Failed to add children: %d\n" , ret); |
572 | goto err_irq; |
573 | } |
574 | |
575 | pm_runtime_set_active(dev: wm8994->dev); |
576 | pm_runtime_enable(dev: wm8994->dev); |
577 | pm_runtime_idle(dev: wm8994->dev); |
578 | |
579 | return 0; |
580 | |
581 | err_irq: |
582 | wm8994_irq_exit(wm8994); |
583 | err_enable: |
584 | regulator_bulk_disable(num_consumers: wm8994->num_supplies, |
585 | consumers: wm8994->supplies); |
586 | err_regulator_free: |
587 | regulator_bulk_free(num_consumers: wm8994->num_supplies, consumers: wm8994->supplies); |
588 | err: |
589 | mfd_remove_devices(parent: wm8994->dev); |
590 | return ret; |
591 | } |
592 | |
593 | static void wm8994_device_exit(struct wm8994 *wm8994) |
594 | { |
595 | pm_runtime_get_sync(dev: wm8994->dev); |
596 | pm_runtime_disable(dev: wm8994->dev); |
597 | pm_runtime_put_noidle(dev: wm8994->dev); |
598 | wm8994_irq_exit(wm8994); |
599 | regulator_bulk_disable(num_consumers: wm8994->num_supplies, consumers: wm8994->supplies); |
600 | regulator_bulk_free(num_consumers: wm8994->num_supplies, consumers: wm8994->supplies); |
601 | mfd_remove_devices(parent: wm8994->dev); |
602 | } |
603 | |
604 | static const struct of_device_id wm8994_of_match[] = { |
605 | { .compatible = "wlf,wm1811" , .data = (void *)WM1811 }, |
606 | { .compatible = "wlf,wm8994" , .data = (void *)WM8994 }, |
607 | { .compatible = "wlf,wm8958" , .data = (void *)WM8958 }, |
608 | { } |
609 | }; |
610 | MODULE_DEVICE_TABLE(of, wm8994_of_match); |
611 | |
612 | static int wm8994_i2c_probe(struct i2c_client *i2c) |
613 | { |
614 | struct wm8994 *wm8994; |
615 | int ret; |
616 | |
617 | wm8994 = devm_kzalloc(dev: &i2c->dev, size: sizeof(struct wm8994), GFP_KERNEL); |
618 | if (wm8994 == NULL) |
619 | return -ENOMEM; |
620 | |
621 | i2c_set_clientdata(client: i2c, data: wm8994); |
622 | wm8994->dev = &i2c->dev; |
623 | wm8994->irq = i2c->irq; |
624 | |
625 | wm8994->type = (enum wm8994_type)i2c_get_match_data(client: i2c); |
626 | |
627 | wm8994->regmap = devm_regmap_init_i2c(i2c, &wm8994_base_regmap_config); |
628 | if (IS_ERR(ptr: wm8994->regmap)) { |
629 | ret = PTR_ERR(ptr: wm8994->regmap); |
630 | dev_err(wm8994->dev, "Failed to allocate register map: %d\n" , |
631 | ret); |
632 | return ret; |
633 | } |
634 | |
635 | return wm8994_device_init(wm8994, irq: i2c->irq); |
636 | } |
637 | |
638 | static void wm8994_i2c_remove(struct i2c_client *i2c) |
639 | { |
640 | struct wm8994 *wm8994 = i2c_get_clientdata(client: i2c); |
641 | |
642 | wm8994_device_exit(wm8994); |
643 | } |
644 | |
645 | static const struct i2c_device_id wm8994_i2c_id[] = { |
646 | { "wm1811" , WM1811 }, |
647 | { "wm1811a" , WM1811 }, |
648 | { "wm8994" , WM8994 }, |
649 | { "wm8958" , WM8958 }, |
650 | { } |
651 | }; |
652 | MODULE_DEVICE_TABLE(i2c, wm8994_i2c_id); |
653 | |
654 | static const struct dev_pm_ops wm8994_pm_ops = { |
655 | RUNTIME_PM_OPS(wm8994_suspend, wm8994_resume, NULL) |
656 | }; |
657 | |
658 | static struct i2c_driver wm8994_i2c_driver = { |
659 | .driver = { |
660 | .name = "wm8994" , |
661 | .pm = pm_ptr(&wm8994_pm_ops), |
662 | .of_match_table = wm8994_of_match, |
663 | }, |
664 | .probe = wm8994_i2c_probe, |
665 | .remove = wm8994_i2c_remove, |
666 | .id_table = wm8994_i2c_id, |
667 | }; |
668 | |
669 | module_i2c_driver(wm8994_i2c_driver); |
670 | |
671 | MODULE_DESCRIPTION("Core support for the WM8994 audio CODEC" ); |
672 | MODULE_LICENSE("GPL" ); |
673 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>" ); |
674 | MODULE_SOFTDEP("pre: wm8994_regulator" ); |
675 | |