Commit | Line | Data |
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9e501086 MB |
1 | /* |
2 | * wm8994-core.c -- Device access for Wolfson WM8994 | |
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 | ||
15 | #include <linux/kernel.h> | |
16 | #include <linux/module.h> | |
5a0e3ad6 | 17 | #include <linux/slab.h> |
9e501086 | 18 | #include <linux/i2c.h> |
d6c645fc | 19 | #include <linux/err.h> |
9e501086 MB |
20 | #include <linux/delay.h> |
21 | #include <linux/mfd/core.h> | |
20fb2772 MB |
22 | #include <linux/of.h> |
23 | #include <linux/of_device.h> | |
d450f19e | 24 | #include <linux/pm_runtime.h> |
d6c645fc | 25 | #include <linux/regmap.h> |
9e501086 MB |
26 | #include <linux/regulator/consumer.h> |
27 | #include <linux/regulator/machine.h> | |
28 | ||
29 | #include <linux/mfd/wm8994/core.h> | |
30 | #include <linux/mfd/wm8994/pdata.h> | |
31 | #include <linux/mfd/wm8994/registers.h> | |
32 | ||
c3f13861 | 33 | #include "wm8994.h" |
9e501086 | 34 | |
ad59de48 | 35 | static const struct mfd_cell wm8994_regulator_devs[] = { |
d450f19e MB |
36 | { |
37 | .name = "wm8994-ldo", | |
fef22cb4 | 38 | .id = 0, |
d450f19e MB |
39 | .pm_runtime_no_callbacks = true, |
40 | }, | |
41 | { | |
42 | .name = "wm8994-ldo", | |
fef22cb4 | 43 | .id = 1, |
d450f19e MB |
44 | .pm_runtime_no_callbacks = true, |
45 | }, | |
9e501086 MB |
46 | }; |
47 | ||
c9fbf7e0 MB |
48 | static struct resource wm8994_codec_resources[] = { |
49 | { | |
50 | .start = WM8994_IRQ_TEMP_SHUT, | |
51 | .end = WM8994_IRQ_TEMP_WARN, | |
52 | .flags = IORESOURCE_IRQ, | |
53 | }, | |
54 | }; | |
55 | ||
56 | static struct resource wm8994_gpio_resources[] = { | |
57 | { | |
58 | .start = WM8994_IRQ_GPIO(1), | |
59 | .end = WM8994_IRQ_GPIO(11), | |
60 | .flags = IORESOURCE_IRQ, | |
61 | }, | |
62 | }; | |
63 | ||
ad59de48 | 64 | static const struct mfd_cell wm8994_devs[] = { |
c9fbf7e0 MB |
65 | { |
66 | .name = "wm8994-codec", | |
67 | .num_resources = ARRAY_SIZE(wm8994_codec_resources), | |
68 | .resources = wm8994_codec_resources, | |
69 | }, | |
70 | ||
71 | { | |
72 | .name = "wm8994-gpio", | |
73 | .num_resources = ARRAY_SIZE(wm8994_gpio_resources), | |
74 | .resources = wm8994_gpio_resources, | |
d450f19e | 75 | .pm_runtime_no_callbacks = true, |
c9fbf7e0 | 76 | }, |
9e501086 MB |
77 | }; |
78 | ||
79 | /* | |
80 | * Supplies for the main bulk of CODEC; the LDO supplies are ignored | |
81 | * and should be handled via the standard regulator API supply | |
82 | * management. | |
83 | */ | |
b1f43bf3 MB |
84 | static const char *wm1811_main_supplies[] = { |
85 | "DBVDD1", | |
86 | "DBVDD2", | |
87 | "DBVDD3", | |
88 | "DCVDD", | |
89 | "AVDD1", | |
90 | "AVDD2", | |
91 | "CPVDD", | |
92 | "SPKVDD1", | |
93 | "SPKVDD2", | |
94 | }; | |
95 | ||
9e501086 MB |
96 | static const char *wm8994_main_supplies[] = { |
97 | "DBVDD", | |
98 | "DCVDD", | |
99 | "AVDD1", | |
100 | "AVDD2", | |
101 | "CPVDD", | |
102 | "SPKVDD1", | |
103 | "SPKVDD2", | |
104 | }; | |
105 | ||
559e0df6 MB |
106 | static const char *wm8958_main_supplies[] = { |
107 | "DBVDD1", | |
108 | "DBVDD2", | |
109 | "DBVDD3", | |
110 | "DCVDD", | |
111 | "AVDD1", | |
112 | "AVDD2", | |
113 | "CPVDD", | |
114 | "SPKVDD1", | |
115 | "SPKVDD2", | |
116 | }; | |
117 | ||
48bb9fe4 | 118 | #ifdef CONFIG_PM |
d450f19e | 119 | static int wm8994_suspend(struct device *dev) |
9e501086 MB |
120 | { |
121 | struct wm8994 *wm8994 = dev_get_drvdata(dev); | |
122 | int ret; | |
123 | ||
77bd70e9 | 124 | /* Don't actually go through with the suspend if the CODEC is |
ebe38f80 | 125 | * still active for accessory detect. */ |
5f40c6b6 MB |
126 | switch (wm8994->type) { |
127 | case WM8958: | |
b5488b6e | 128 | case WM1811: |
5f40c6b6 MB |
129 | ret = wm8994_reg_read(wm8994, WM8958_MIC_DETECT_1); |
130 | if (ret < 0) { | |
131 | dev_err(dev, "Failed to read power status: %d\n", ret); | |
132 | } else if (ret & WM8958_MICD_ENA) { | |
133 | dev_dbg(dev, "CODEC still active, ignoring suspend\n"); | |
134 | return 0; | |
135 | } | |
136 | break; | |
137 | default: | |
138 | break; | |
139 | } | |
140 | ||
881de670 MB |
141 | /* Disable LDO pulldowns while the device is suspended if we |
142 | * don't know that something will be driving them. */ | |
143 | if (!wm8994->ldo_ena_always_driven) | |
144 | wm8994_set_bits(wm8994, WM8994_PULL_CONTROL_2, | |
145 | WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD, | |
146 | WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD); | |
147 | ||
f40dff9e MB |
148 | /* Explicitly put the device into reset in case regulators |
149 | * don't get disabled in order to ensure consistent restart. | |
150 | */ | |
be79cf2f MB |
151 | wm8994_reg_write(wm8994, WM8994_SOFTWARE_RESET, |
152 | wm8994_reg_read(wm8994, WM8994_SOFTWARE_RESET)); | |
f40dff9e | 153 | |
ed393dcd MB |
154 | regcache_mark_dirty(wm8994->regmap); |
155 | ||
78a27cd3 CR |
156 | /* Restore GPIO registers to prevent problems with mismatched |
157 | * pin configurations. | |
158 | */ | |
ed393dcd MB |
159 | ret = regcache_sync_region(wm8994->regmap, WM8994_GPIO_1, |
160 | WM8994_GPIO_11); | |
78a27cd3 CR |
161 | if (ret != 0) |
162 | dev_err(dev, "Failed to restore GPIO registers: %d\n", ret); | |
163 | ||
1a2017b7 MB |
164 | /* In case one of the GPIOs is used as a wake input. */ |
165 | ret = regcache_sync_region(wm8994->regmap, | |
166 | WM8994_INTERRUPT_STATUS_1_MASK, | |
167 | WM8994_INTERRUPT_STATUS_1_MASK); | |
168 | if (ret != 0) | |
169 | dev_err(dev, "Failed to restore interrupt mask: %d\n", ret); | |
170 | ||
3befc925 | 171 | regcache_cache_only(wm8994->regmap, true); |
77bd70e9 MB |
172 | wm8994->suspended = true; |
173 | ||
559e0df6 | 174 | ret = regulator_bulk_disable(wm8994->num_supplies, |
9e501086 MB |
175 | wm8994->supplies); |
176 | if (ret != 0) { | |
177 | dev_err(dev, "Failed to disable supplies: %d\n", ret); | |
178 | return ret; | |
179 | } | |
180 | ||
181 | return 0; | |
182 | } | |
183 | ||
d450f19e | 184 | static int wm8994_resume(struct device *dev) |
9e501086 MB |
185 | { |
186 | struct wm8994 *wm8994 = dev_get_drvdata(dev); | |
c3f13861 | 187 | int ret; |
9e501086 | 188 | |
77bd70e9 MB |
189 | /* We may have lied to the PM core about suspending */ |
190 | if (!wm8994->suspended) | |
191 | return 0; | |
192 | ||
559e0df6 | 193 | ret = regulator_bulk_enable(wm8994->num_supplies, |
9e501086 MB |
194 | wm8994->supplies); |
195 | if (ret != 0) { | |
196 | dev_err(dev, "Failed to enable supplies: %d\n", ret); | |
197 | return ret; | |
198 | } | |
199 | ||
3befc925 | 200 | regcache_cache_only(wm8994->regmap, false); |
c3f13861 MB |
201 | ret = regcache_sync(wm8994->regmap); |
202 | if (ret != 0) { | |
203 | dev_err(dev, "Failed to restore register map: %d\n", ret); | |
204 | goto err_enable; | |
98ae1cca | 205 | } |
c9fbf7e0 | 206 | |
881de670 MB |
207 | /* Disable LDO pulldowns while the device is active */ |
208 | wm8994_set_bits(wm8994, WM8994_PULL_CONTROL_2, | |
209 | WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD, | |
210 | 0); | |
211 | ||
77bd70e9 MB |
212 | wm8994->suspended = false; |
213 | ||
9e501086 | 214 | return 0; |
c3f13861 MB |
215 | |
216 | err_enable: | |
217 | regulator_bulk_disable(wm8994->num_supplies, wm8994->supplies); | |
218 | ||
219 | return ret; | |
9e501086 MB |
220 | } |
221 | #endif | |
222 | ||
223 | #ifdef CONFIG_REGULATOR | |
224 | static int wm8994_ldo_in_use(struct wm8994_pdata *pdata, int ldo) | |
225 | { | |
226 | struct wm8994_ldo_pdata *ldo_pdata; | |
227 | ||
228 | if (!pdata) | |
229 | return 0; | |
230 | ||
231 | ldo_pdata = &pdata->ldo[ldo]; | |
232 | ||
233 | if (!ldo_pdata->init_data) | |
234 | return 0; | |
235 | ||
236 | return ldo_pdata->init_data->num_consumer_supplies != 0; | |
237 | } | |
238 | #else | |
239 | static int wm8994_ldo_in_use(struct wm8994_pdata *pdata, int ldo) | |
240 | { | |
241 | return 0; | |
242 | } | |
243 | #endif | |
244 | ||
8019ff6c | 245 | static const struct reg_sequence wm8994_revc_patch[] = { |
462835e4 MB |
246 | { 0x102, 0x3 }, |
247 | { 0x56, 0x3 }, | |
248 | { 0x817, 0x0 }, | |
249 | { 0x102, 0x0 }, | |
250 | }; | |
251 | ||
8019ff6c | 252 | static const struct reg_sequence wm8958_reva_patch[] = { |
462835e4 MB |
253 | { 0x102, 0x3 }, |
254 | { 0xcb, 0x81 }, | |
255 | { 0x817, 0x0 }, | |
256 | { 0x102, 0x0 }, | |
257 | }; | |
258 | ||
8019ff6c | 259 | static const struct reg_sequence wm1811_reva_patch[] = { |
462835e4 | 260 | { 0x102, 0x3 }, |
9282a7b9 | 261 | { 0x56, 0xc07 }, |
462835e4 MB |
262 | { 0x5d, 0x7e }, |
263 | { 0x5e, 0x0 }, | |
264 | { 0x102, 0x0 }, | |
265 | }; | |
266 | ||
20fb2772 MB |
267 | #ifdef CONFIG_OF |
268 | static int wm8994_set_pdata_from_of(struct wm8994 *wm8994) | |
269 | { | |
270 | struct device_node *np = wm8994->dev->of_node; | |
271 | struct wm8994_pdata *pdata = &wm8994->pdata; | |
272 | int i; | |
273 | ||
274 | if (!np) | |
275 | return 0; | |
276 | ||
277 | if (of_property_read_u32_array(np, "wlf,gpio-cfg", pdata->gpio_defaults, | |
278 | ARRAY_SIZE(pdata->gpio_defaults)) >= 0) { | |
279 | for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) { | |
280 | if (wm8994->pdata.gpio_defaults[i] == 0) | |
281 | pdata->gpio_defaults[i] | |
282 | = WM8994_CONFIGURE_GPIO; | |
283 | } | |
284 | } | |
285 | ||
286 | of_property_read_u32_array(np, "wlf,micbias-cfg", pdata->micbias, | |
287 | ARRAY_SIZE(pdata->micbias)); | |
288 | ||
289 | pdata->lineout1_diff = true; | |
290 | pdata->lineout2_diff = true; | |
291 | if (of_find_property(np, "wlf,lineout1-se", NULL)) | |
292 | pdata->lineout1_diff = false; | |
293 | if (of_find_property(np, "wlf,lineout2-se", NULL)) | |
294 | pdata->lineout2_diff = false; | |
295 | ||
296 | if (of_find_property(np, "wlf,lineout1-feedback", NULL)) | |
297 | pdata->lineout1fb = true; | |
298 | if (of_find_property(np, "wlf,lineout2-feedback", NULL)) | |
299 | pdata->lineout2fb = true; | |
300 | ||
301 | if (of_find_property(np, "wlf,ldoena-always-driven", NULL)) | |
302 | pdata->lineout2fb = true; | |
303 | ||
102370fb AP |
304 | pdata->spkmode_pu = of_property_read_bool(np, "wlf,spkmode-pu"); |
305 | ||
4d3e55bc AP |
306 | pdata->csnaddr_pd = of_property_read_bool(np, "wlf,csnaddr-pd"); |
307 | ||
20fb2772 MB |
308 | return 0; |
309 | } | |
310 | #else | |
311 | static int wm8994_set_pdata_from_of(struct wm8994 *wm8994) | |
312 | { | |
313 | return 0; | |
314 | } | |
315 | #endif | |
316 | ||
9e501086 MB |
317 | /* |
318 | * Instantiate the generic non-control parts of the device. | |
319 | */ | |
f791be49 | 320 | static int wm8994_device_init(struct wm8994 *wm8994, int irq) |
9e501086 | 321 | { |
a8a8fc28 | 322 | struct wm8994_pdata *pdata; |
34697898 | 323 | struct regmap_config *regmap_config; |
8019ff6c | 324 | const struct reg_sequence *regmap_patch = NULL; |
559e0df6 | 325 | const char *devname; |
222bc784 | 326 | int ret, i, patch_regs = 0; |
26c34c25 | 327 | int pulls = 0; |
9e501086 | 328 | |
a8a8fc28 MB |
329 | if (dev_get_platdata(wm8994->dev)) { |
330 | pdata = dev_get_platdata(wm8994->dev); | |
331 | wm8994->pdata = *pdata; | |
332 | } | |
333 | pdata = &wm8994->pdata; | |
334 | ||
20fb2772 MB |
335 | ret = wm8994_set_pdata_from_of(wm8994); |
336 | if (ret != 0) | |
337 | return ret; | |
338 | ||
9e501086 MB |
339 | dev_set_drvdata(wm8994->dev, wm8994); |
340 | ||
341 | /* Add the on-chip regulators first for bootstrapping */ | |
fef22cb4 | 342 | ret = mfd_add_devices(wm8994->dev, 0, |
9e501086 MB |
343 | wm8994_regulator_devs, |
344 | ARRAY_SIZE(wm8994_regulator_devs), | |
55692af5 | 345 | NULL, 0, NULL); |
9e501086 MB |
346 | if (ret != 0) { |
347 | dev_err(wm8994->dev, "Failed to add children: %d\n", ret); | |
9db4249f | 348 | goto err; |
9e501086 MB |
349 | } |
350 | ||
559e0df6 | 351 | switch (wm8994->type) { |
b1f43bf3 MB |
352 | case WM1811: |
353 | wm8994->num_supplies = ARRAY_SIZE(wm1811_main_supplies); | |
354 | break; | |
559e0df6 MB |
355 | case WM8994: |
356 | wm8994->num_supplies = ARRAY_SIZE(wm8994_main_supplies); | |
357 | break; | |
358 | case WM8958: | |
359 | wm8994->num_supplies = ARRAY_SIZE(wm8958_main_supplies); | |
360 | break; | |
361 | default: | |
362 | BUG(); | |
9db4249f | 363 | goto err; |
559e0df6 MB |
364 | } |
365 | ||
a86854d0 KC |
366 | wm8994->supplies = devm_kcalloc(wm8994->dev, |
367 | wm8994->num_supplies, | |
368 | sizeof(struct regulator_bulk_data), | |
369 | GFP_KERNEL); | |
fccbd21f AL |
370 | if (!wm8994->supplies) { |
371 | ret = -ENOMEM; | |
9db4249f | 372 | goto err; |
fccbd21f | 373 | } |
9e501086 | 374 | |
559e0df6 | 375 | switch (wm8994->type) { |
b1f43bf3 MB |
376 | case WM1811: |
377 | for (i = 0; i < ARRAY_SIZE(wm1811_main_supplies); i++) | |
378 | wm8994->supplies[i].supply = wm1811_main_supplies[i]; | |
379 | break; | |
559e0df6 MB |
380 | case WM8994: |
381 | for (i = 0; i < ARRAY_SIZE(wm8994_main_supplies); i++) | |
382 | wm8994->supplies[i].supply = wm8994_main_supplies[i]; | |
383 | break; | |
384 | case WM8958: | |
385 | for (i = 0; i < ARRAY_SIZE(wm8958_main_supplies); i++) | |
386 | wm8994->supplies[i].supply = wm8958_main_supplies[i]; | |
387 | break; | |
388 | default: | |
389 | BUG(); | |
9db4249f | 390 | goto err; |
559e0df6 | 391 | } |
202b5689 VK |
392 | |
393 | /* | |
394 | * Can't use devres helper here as some of the supplies are provided by | |
395 | * wm8994->dev's children (regulators) and those regulators are | |
396 | * unregistered by the devres core before the supplies are freed. | |
397 | */ | |
398 | ret = regulator_bulk_get(wm8994->dev, wm8994->num_supplies, | |
9e501086 MB |
399 | wm8994->supplies); |
400 | if (ret != 0) { | |
401 | dev_err(wm8994->dev, "Failed to get supplies: %d\n", ret); | |
9db4249f | 402 | goto err; |
9e501086 MB |
403 | } |
404 | ||
3e56c468 | 405 | ret = regulator_bulk_enable(wm8994->num_supplies, wm8994->supplies); |
9e501086 MB |
406 | if (ret != 0) { |
407 | dev_err(wm8994->dev, "Failed to enable supplies: %d\n", ret); | |
202b5689 | 408 | goto err_regulator_free; |
9e501086 MB |
409 | } |
410 | ||
411 | ret = wm8994_reg_read(wm8994, WM8994_SOFTWARE_RESET); | |
412 | if (ret < 0) { | |
413 | dev_err(wm8994->dev, "Failed to read ID register\n"); | |
414 | goto err_enable; | |
415 | } | |
559e0df6 | 416 | switch (ret) { |
b1f43bf3 MB |
417 | case 0x1811: |
418 | devname = "WM1811"; | |
419 | if (wm8994->type != WM1811) | |
420 | dev_warn(wm8994->dev, "Device registered as type %d\n", | |
421 | wm8994->type); | |
422 | wm8994->type = WM1811; | |
423 | break; | |
559e0df6 MB |
424 | case 0x8994: |
425 | devname = "WM8994"; | |
426 | if (wm8994->type != WM8994) | |
427 | dev_warn(wm8994->dev, "Device registered as type %d\n", | |
428 | wm8994->type); | |
429 | wm8994->type = WM8994; | |
430 | break; | |
431 | case 0x8958: | |
432 | devname = "WM8958"; | |
433 | if (wm8994->type != WM8958) | |
434 | dev_warn(wm8994->dev, "Device registered as type %d\n", | |
435 | wm8994->type); | |
436 | wm8994->type = WM8958; | |
437 | break; | |
438 | default: | |
9e501086 MB |
439 | dev_err(wm8994->dev, "Device is not a WM8994, ID is %x\n", |
440 | ret); | |
441 | ret = -EINVAL; | |
442 | goto err_enable; | |
443 | } | |
444 | ||
445 | ret = wm8994_reg_read(wm8994, WM8994_CHIP_REVISION); | |
446 | if (ret < 0) { | |
447 | dev_err(wm8994->dev, "Failed to read revision register: %d\n", | |
448 | ret); | |
449 | goto err_enable; | |
450 | } | |
cc7a7279 MB |
451 | wm8994->revision = ret & WM8994_CHIP_REV_MASK; |
452 | wm8994->cust_id = (ret & WM8994_CUST_ID_MASK) >> WM8994_CUST_ID_SHIFT; | |
9e501086 | 453 | |
a2495bc7 MB |
454 | switch (wm8994->type) { |
455 | case WM8994: | |
7ed5849c | 456 | switch (wm8994->revision) { |
a2495bc7 MB |
457 | case 0: |
458 | case 1: | |
559e0df6 MB |
459 | dev_warn(wm8994->dev, |
460 | "revision %c not fully supported\n", | |
7ed5849c | 461 | 'A' + wm8994->revision); |
a2495bc7 | 462 | break; |
462835e4 MB |
463 | case 2: |
464 | case 3: | |
d54e17f9 | 465 | default: |
462835e4 MB |
466 | regmap_patch = wm8994_revc_patch; |
467 | patch_regs = ARRAY_SIZE(wm8994_revc_patch); | |
468 | break; | |
462835e4 MB |
469 | } |
470 | break; | |
471 | ||
472 | case WM8958: | |
473 | switch (wm8994->revision) { | |
474 | case 0: | |
475 | regmap_patch = wm8958_reva_patch; | |
476 | patch_regs = ARRAY_SIZE(wm8958_reva_patch); | |
477 | break; | |
a2495bc7 MB |
478 | default: |
479 | break; | |
480 | } | |
9e501086 | 481 | break; |
462835e4 | 482 | |
443e67ed MB |
483 | case WM1811: |
484 | /* Revision C did not change the relevant layer */ | |
7ed5849c MB |
485 | if (wm8994->revision > 1) |
486 | wm8994->revision++; | |
d54e17f9 MB |
487 | |
488 | regmap_patch = wm1811_reva_patch; | |
489 | patch_regs = ARRAY_SIZE(wm1811_reva_patch); | |
443e67ed | 490 | break; |
462835e4 | 491 | |
9e501086 | 492 | default: |
9e501086 MB |
493 | break; |
494 | } | |
495 | ||
cc7a7279 MB |
496 | dev_info(wm8994->dev, "%s revision %c CUST_ID %02x\n", devname, |
497 | 'A' + wm8994->revision, wm8994->cust_id); | |
9e501086 | 498 | |
34697898 MB |
499 | switch (wm8994->type) { |
500 | case WM1811: | |
501 | regmap_config = &wm1811_regmap_config; | |
502 | break; | |
503 | case WM8994: | |
504 | regmap_config = &wm8994_regmap_config; | |
505 | break; | |
506 | case WM8958: | |
507 | regmap_config = &wm8958_regmap_config; | |
508 | break; | |
509 | default: | |
510 | dev_err(wm8994->dev, "Unknown device type %d\n", wm8994->type); | |
df47df55 AB |
511 | ret = -EINVAL; |
512 | goto err_enable; | |
34697898 MB |
513 | } |
514 | ||
515 | ret = regmap_reinit_cache(wm8994->regmap, regmap_config); | |
516 | if (ret != 0) { | |
517 | dev_err(wm8994->dev, "Failed to reinit register cache: %d\n", | |
518 | ret); | |
df47df55 | 519 | goto err_enable; |
34697898 | 520 | } |
9e501086 | 521 | |
f3799e93 MB |
522 | /* Explicitly put the device into reset in case regulators |
523 | * don't get disabled in order to ensure we know the device | |
524 | * state. | |
525 | */ | |
526 | ret = wm8994_reg_write(wm8994, WM8994_SOFTWARE_RESET, | |
527 | wm8994_reg_read(wm8994, WM8994_SOFTWARE_RESET)); | |
528 | if (ret != 0) { | |
529 | dev_err(wm8994->dev, "Failed to reset device: %d\n", ret); | |
df47df55 | 530 | goto err_enable; |
f3799e93 MB |
531 | } |
532 | ||
462835e4 MB |
533 | if (regmap_patch) { |
534 | ret = regmap_register_patch(wm8994->regmap, regmap_patch, | |
535 | patch_regs); | |
536 | if (ret != 0) { | |
537 | dev_err(wm8994->dev, "Failed to register patch: %d\n", | |
538 | ret); | |
df47df55 | 539 | goto err_enable; |
462835e4 MB |
540 | } |
541 | } | |
542 | ||
a8a8fc28 MB |
543 | wm8994->irq_base = pdata->irq_base; |
544 | wm8994->gpio_base = pdata->gpio_base; | |
545 | ||
546 | /* GPIO configuration is only applied if it's non-zero */ | |
547 | for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) { | |
548 | if (pdata->gpio_defaults[i]) { | |
549 | wm8994_set_bits(wm8994, WM8994_GPIO_1 + i, | |
550 | 0xffff, pdata->gpio_defaults[i]); | |
9e501086 | 551 | } |
a8a8fc28 | 552 | } |
881de670 | 553 | |
a8a8fc28 | 554 | wm8994->ldo_ena_always_driven = pdata->ldo_ena_always_driven; |
26c34c25 | 555 | |
a8a8fc28 MB |
556 | if (pdata->spkmode_pu) |
557 | pulls |= WM8994_SPKMODE_PU; | |
4d3e55bc AP |
558 | if (pdata->csnaddr_pd) |
559 | pulls |= WM8994_CSNADDR_PD; | |
9e501086 | 560 | |
26c34c25 | 561 | /* Disable unneeded pulls */ |
881de670 | 562 | wm8994_set_bits(wm8994, WM8994_PULL_CONTROL_2, |
26c34c25 MB |
563 | WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD | |
564 | WM8994_SPKMODE_PU | WM8994_CSNADDR_PD, | |
565 | pulls); | |
881de670 | 566 | |
9e501086 MB |
567 | /* In some system designs where the regulators are not in use, |
568 | * we can achieve a small reduction in leakage currents by | |
569 | * floating LDO outputs. This bit makes no difference if the | |
570 | * LDOs are enabled, it only affects cases where the LDOs were | |
571 | * in operation and are then disabled. | |
572 | */ | |
573 | for (i = 0; i < WM8994_NUM_LDO_REGS; i++) { | |
574 | if (wm8994_ldo_in_use(pdata, i)) | |
575 | wm8994_set_bits(wm8994, WM8994_LDO_1 + i, | |
576 | WM8994_LDO1_DISCH, WM8994_LDO1_DISCH); | |
577 | else | |
578 | wm8994_set_bits(wm8994, WM8994_LDO_1 + i, | |
579 | WM8994_LDO1_DISCH, 0); | |
580 | } | |
581 | ||
c9fbf7e0 MB |
582 | wm8994_irq_init(wm8994); |
583 | ||
9e501086 MB |
584 | ret = mfd_add_devices(wm8994->dev, -1, |
585 | wm8994_devs, ARRAY_SIZE(wm8994_devs), | |
55692af5 | 586 | NULL, 0, NULL); |
9e501086 MB |
587 | if (ret != 0) { |
588 | dev_err(wm8994->dev, "Failed to add children: %d\n", ret); | |
c9fbf7e0 | 589 | goto err_irq; |
9e501086 MB |
590 | } |
591 | ||
d450f19e | 592 | pm_runtime_enable(wm8994->dev); |
ee67b0cd | 593 | pm_runtime_idle(wm8994->dev); |
d450f19e | 594 | |
9e501086 MB |
595 | return 0; |
596 | ||
c9fbf7e0 MB |
597 | err_irq: |
598 | wm8994_irq_exit(wm8994); | |
9e501086 | 599 | err_enable: |
559e0df6 | 600 | regulator_bulk_disable(wm8994->num_supplies, |
9e501086 | 601 | wm8994->supplies); |
202b5689 VK |
602 | err_regulator_free: |
603 | regulator_bulk_free(wm8994->num_supplies, wm8994->supplies); | |
9db4249f | 604 | err: |
9e501086 | 605 | mfd_remove_devices(wm8994->dev); |
9e501086 MB |
606 | return ret; |
607 | } | |
608 | ||
4740f73f | 609 | static void wm8994_device_exit(struct wm8994 *wm8994) |
9e501086 | 610 | { |
d450f19e | 611 | pm_runtime_disable(wm8994->dev); |
c9fbf7e0 | 612 | wm8994_irq_exit(wm8994); |
3e56c468 | 613 | regulator_bulk_disable(wm8994->num_supplies, wm8994->supplies); |
202b5689 | 614 | regulator_bulk_free(wm8994->num_supplies, wm8994->supplies); |
bb63f7d3 | 615 | mfd_remove_devices(wm8994->dev); |
9e501086 MB |
616 | } |
617 | ||
cf763c2e | 618 | static const struct of_device_id wm8994_of_match[] = { |
39aa3b5a MB |
619 | { .compatible = "wlf,wm1811", .data = (void *)WM1811 }, |
620 | { .compatible = "wlf,wm8994", .data = (void *)WM8994 }, | |
621 | { .compatible = "wlf,wm8958", .data = (void *)WM8958 }, | |
cf763c2e MB |
622 | { } |
623 | }; | |
624 | MODULE_DEVICE_TABLE(of, wm8994_of_match); | |
625 | ||
f791be49 | 626 | static int wm8994_i2c_probe(struct i2c_client *i2c, |
027d6766 | 627 | const struct i2c_device_id *id) |
9e501086 | 628 | { |
20fb2772 | 629 | const struct of_device_id *of_id; |
9e501086 | 630 | struct wm8994 *wm8994; |
d6c645fc | 631 | int ret; |
9e501086 | 632 | |
2fa33494 | 633 | wm8994 = devm_kzalloc(&i2c->dev, sizeof(struct wm8994), GFP_KERNEL); |
d0a11693 | 634 | if (wm8994 == NULL) |
9e501086 | 635 | return -ENOMEM; |
9e501086 MB |
636 | |
637 | i2c_set_clientdata(i2c, wm8994); | |
638 | wm8994->dev = &i2c->dev; | |
c9fbf7e0 | 639 | wm8994->irq = i2c->irq; |
20fb2772 MB |
640 | |
641 | if (i2c->dev.of_node) { | |
642 | of_id = of_match_device(wm8994_of_match, &i2c->dev); | |
643 | if (of_id) | |
7f8279ce | 644 | wm8994->type = (enum wm8994_type)of_id->data; |
20fb2772 MB |
645 | } else { |
646 | wm8994->type = id->driver_data; | |
647 | } | |
9e501086 | 648 | |
9db4249f | 649 | wm8994->regmap = devm_regmap_init_i2c(i2c, &wm8994_base_regmap_config); |
d6c645fc MB |
650 | if (IS_ERR(wm8994->regmap)) { |
651 | ret = PTR_ERR(wm8994->regmap); | |
652 | dev_err(wm8994->dev, "Failed to allocate register map: %d\n", | |
653 | ret); | |
d6c645fc MB |
654 | return ret; |
655 | } | |
656 | ||
559e0df6 | 657 | return wm8994_device_init(wm8994, i2c->irq); |
9e501086 MB |
658 | } |
659 | ||
4740f73f | 660 | static int wm8994_i2c_remove(struct i2c_client *i2c) |
9e501086 MB |
661 | { |
662 | struct wm8994 *wm8994 = i2c_get_clientdata(i2c); | |
663 | ||
664 | wm8994_device_exit(wm8994); | |
665 | ||
666 | return 0; | |
667 | } | |
668 | ||
9e501086 | 669 | static const struct i2c_device_id wm8994_i2c_id[] = { |
b1f43bf3 | 670 | { "wm1811", WM1811 }, |
71d17184 | 671 | { "wm1811a", WM1811 }, |
559e0df6 MB |
672 | { "wm8994", WM8994 }, |
673 | { "wm8958", WM8958 }, | |
9e501086 MB |
674 | { } |
675 | }; | |
676 | MODULE_DEVICE_TABLE(i2c, wm8994_i2c_id); | |
677 | ||
6394678e MB |
678 | static const struct dev_pm_ops wm8994_pm_ops = { |
679 | SET_RUNTIME_PM_OPS(wm8994_suspend, wm8994_resume, NULL) | |
680 | }; | |
d450f19e | 681 | |
9e501086 MB |
682 | static struct i2c_driver wm8994_i2c_driver = { |
683 | .driver = { | |
d450f19e | 684 | .name = "wm8994", |
d450f19e | 685 | .pm = &wm8994_pm_ops, |
20fb2772 | 686 | .of_match_table = of_match_ptr(wm8994_of_match), |
9e501086 MB |
687 | }, |
688 | .probe = wm8994_i2c_probe, | |
84449216 | 689 | .remove = wm8994_i2c_remove, |
9e501086 MB |
690 | .id_table = wm8994_i2c_id, |
691 | }; | |
692 | ||
ceb57d27 | 693 | module_i2c_driver(wm8994_i2c_driver); |
9e501086 MB |
694 | |
695 | MODULE_DESCRIPTION("Core support for the WM8994 audio CODEC"); | |
696 | MODULE_LICENSE("GPL"); | |
697 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); |