Commit | Line | Data |
---|---|---|
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> | |
24 | #include <linux/of_gpio.h> | |
d450f19e | 25 | #include <linux/pm_runtime.h> |
d6c645fc | 26 | #include <linux/regmap.h> |
9e501086 MB |
27 | #include <linux/regulator/consumer.h> |
28 | #include <linux/regulator/machine.h> | |
29 | ||
30 | #include <linux/mfd/wm8994/core.h> | |
31 | #include <linux/mfd/wm8994/pdata.h> | |
32 | #include <linux/mfd/wm8994/registers.h> | |
33 | ||
c3f13861 | 34 | #include "wm8994.h" |
9e501086 | 35 | |
ad59de48 | 36 | static const struct mfd_cell wm8994_regulator_devs[] = { |
d450f19e MB |
37 | { |
38 | .name = "wm8994-ldo", | |
fef22cb4 | 39 | .id = 0, |
d450f19e MB |
40 | .pm_runtime_no_callbacks = true, |
41 | }, | |
42 | { | |
43 | .name = "wm8994-ldo", | |
fef22cb4 | 44 | .id = 1, |
d450f19e MB |
45 | .pm_runtime_no_callbacks = true, |
46 | }, | |
9e501086 MB |
47 | }; |
48 | ||
c9fbf7e0 MB |
49 | static struct resource wm8994_codec_resources[] = { |
50 | { | |
51 | .start = WM8994_IRQ_TEMP_SHUT, | |
52 | .end = WM8994_IRQ_TEMP_WARN, | |
53 | .flags = IORESOURCE_IRQ, | |
54 | }, | |
55 | }; | |
56 | ||
57 | static struct resource wm8994_gpio_resources[] = { | |
58 | { | |
59 | .start = WM8994_IRQ_GPIO(1), | |
60 | .end = WM8994_IRQ_GPIO(11), | |
61 | .flags = IORESOURCE_IRQ, | |
62 | }, | |
63 | }; | |
64 | ||
ad59de48 | 65 | static const struct mfd_cell wm8994_devs[] = { |
c9fbf7e0 MB |
66 | { |
67 | .name = "wm8994-codec", | |
68 | .num_resources = ARRAY_SIZE(wm8994_codec_resources), | |
69 | .resources = wm8994_codec_resources, | |
70 | }, | |
71 | ||
72 | { | |
73 | .name = "wm8994-gpio", | |
74 | .num_resources = ARRAY_SIZE(wm8994_gpio_resources), | |
75 | .resources = wm8994_gpio_resources, | |
d450f19e | 76 | .pm_runtime_no_callbacks = true, |
c9fbf7e0 | 77 | }, |
9e501086 MB |
78 | }; |
79 | ||
80 | /* | |
81 | * Supplies for the main bulk of CODEC; the LDO supplies are ignored | |
82 | * and should be handled via the standard regulator API supply | |
83 | * management. | |
84 | */ | |
b1f43bf3 MB |
85 | static const char *wm1811_main_supplies[] = { |
86 | "DBVDD1", | |
87 | "DBVDD2", | |
88 | "DBVDD3", | |
89 | "DCVDD", | |
90 | "AVDD1", | |
91 | "AVDD2", | |
92 | "CPVDD", | |
93 | "SPKVDD1", | |
94 | "SPKVDD2", | |
95 | }; | |
96 | ||
9e501086 MB |
97 | static const char *wm8994_main_supplies[] = { |
98 | "DBVDD", | |
99 | "DCVDD", | |
100 | "AVDD1", | |
101 | "AVDD2", | |
102 | "CPVDD", | |
103 | "SPKVDD1", | |
104 | "SPKVDD2", | |
105 | }; | |
106 | ||
559e0df6 MB |
107 | static const char *wm8958_main_supplies[] = { |
108 | "DBVDD1", | |
109 | "DBVDD2", | |
110 | "DBVDD3", | |
111 | "DCVDD", | |
112 | "AVDD1", | |
113 | "AVDD2", | |
114 | "CPVDD", | |
115 | "SPKVDD1", | |
116 | "SPKVDD2", | |
117 | }; | |
118 | ||
48bb9fe4 | 119 | #ifdef CONFIG_PM |
d450f19e | 120 | static int wm8994_suspend(struct device *dev) |
9e501086 MB |
121 | { |
122 | struct wm8994 *wm8994 = dev_get_drvdata(dev); | |
123 | int ret; | |
124 | ||
77bd70e9 | 125 | /* Don't actually go through with the suspend if the CODEC is |
ebe38f80 | 126 | * still active for accessory detect. */ |
5f40c6b6 MB |
127 | switch (wm8994->type) { |
128 | case WM8958: | |
b5488b6e | 129 | case WM1811: |
5f40c6b6 MB |
130 | ret = wm8994_reg_read(wm8994, WM8958_MIC_DETECT_1); |
131 | if (ret < 0) { | |
132 | dev_err(dev, "Failed to read power status: %d\n", ret); | |
133 | } else if (ret & WM8958_MICD_ENA) { | |
134 | dev_dbg(dev, "CODEC still active, ignoring suspend\n"); | |
135 | return 0; | |
136 | } | |
137 | break; | |
138 | default: | |
139 | break; | |
140 | } | |
141 | ||
881de670 MB |
142 | /* Disable LDO pulldowns while the device is suspended if we |
143 | * don't know that something will be driving them. */ | |
144 | if (!wm8994->ldo_ena_always_driven) | |
145 | wm8994_set_bits(wm8994, WM8994_PULL_CONTROL_2, | |
146 | WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD, | |
147 | WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD); | |
148 | ||
f40dff9e MB |
149 | /* Explicitly put the device into reset in case regulators |
150 | * don't get disabled in order to ensure consistent restart. | |
151 | */ | |
be79cf2f MB |
152 | wm8994_reg_write(wm8994, WM8994_SOFTWARE_RESET, |
153 | wm8994_reg_read(wm8994, WM8994_SOFTWARE_RESET)); | |
f40dff9e | 154 | |
ed393dcd MB |
155 | regcache_mark_dirty(wm8994->regmap); |
156 | ||
78a27cd3 CR |
157 | /* Restore GPIO registers to prevent problems with mismatched |
158 | * pin configurations. | |
159 | */ | |
ed393dcd MB |
160 | ret = regcache_sync_region(wm8994->regmap, WM8994_GPIO_1, |
161 | WM8994_GPIO_11); | |
78a27cd3 CR |
162 | if (ret != 0) |
163 | dev_err(dev, "Failed to restore GPIO registers: %d\n", ret); | |
164 | ||
1a2017b7 MB |
165 | /* In case one of the GPIOs is used as a wake input. */ |
166 | ret = regcache_sync_region(wm8994->regmap, | |
167 | WM8994_INTERRUPT_STATUS_1_MASK, | |
168 | WM8994_INTERRUPT_STATUS_1_MASK); | |
169 | if (ret != 0) | |
170 | dev_err(dev, "Failed to restore interrupt mask: %d\n", ret); | |
171 | ||
3befc925 | 172 | regcache_cache_only(wm8994->regmap, true); |
77bd70e9 MB |
173 | wm8994->suspended = true; |
174 | ||
559e0df6 | 175 | ret = regulator_bulk_disable(wm8994->num_supplies, |
9e501086 MB |
176 | wm8994->supplies); |
177 | if (ret != 0) { | |
178 | dev_err(dev, "Failed to disable supplies: %d\n", ret); | |
179 | return ret; | |
180 | } | |
181 | ||
182 | return 0; | |
183 | } | |
184 | ||
d450f19e | 185 | static int wm8994_resume(struct device *dev) |
9e501086 MB |
186 | { |
187 | struct wm8994 *wm8994 = dev_get_drvdata(dev); | |
c3f13861 | 188 | int ret; |
9e501086 | 189 | |
77bd70e9 MB |
190 | /* We may have lied to the PM core about suspending */ |
191 | if (!wm8994->suspended) | |
192 | return 0; | |
193 | ||
559e0df6 | 194 | ret = regulator_bulk_enable(wm8994->num_supplies, |
9e501086 MB |
195 | wm8994->supplies); |
196 | if (ret != 0) { | |
197 | dev_err(dev, "Failed to enable supplies: %d\n", ret); | |
198 | return ret; | |
199 | } | |
200 | ||
3befc925 | 201 | regcache_cache_only(wm8994->regmap, false); |
c3f13861 MB |
202 | ret = regcache_sync(wm8994->regmap); |
203 | if (ret != 0) { | |
204 | dev_err(dev, "Failed to restore register map: %d\n", ret); | |
205 | goto err_enable; | |
98ae1cca | 206 | } |
c9fbf7e0 | 207 | |
881de670 MB |
208 | /* Disable LDO pulldowns while the device is active */ |
209 | wm8994_set_bits(wm8994, WM8994_PULL_CONTROL_2, | |
210 | WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD, | |
211 | 0); | |
212 | ||
77bd70e9 MB |
213 | wm8994->suspended = false; |
214 | ||
9e501086 | 215 | return 0; |
c3f13861 MB |
216 | |
217 | err_enable: | |
218 | regulator_bulk_disable(wm8994->num_supplies, wm8994->supplies); | |
219 | ||
220 | return ret; | |
9e501086 MB |
221 | } |
222 | #endif | |
223 | ||
224 | #ifdef CONFIG_REGULATOR | |
225 | static int wm8994_ldo_in_use(struct wm8994_pdata *pdata, int ldo) | |
226 | { | |
227 | struct wm8994_ldo_pdata *ldo_pdata; | |
228 | ||
229 | if (!pdata) | |
230 | return 0; | |
231 | ||
232 | ldo_pdata = &pdata->ldo[ldo]; | |
233 | ||
234 | if (!ldo_pdata->init_data) | |
235 | return 0; | |
236 | ||
237 | return ldo_pdata->init_data->num_consumer_supplies != 0; | |
238 | } | |
239 | #else | |
240 | static int wm8994_ldo_in_use(struct wm8994_pdata *pdata, int ldo) | |
241 | { | |
242 | return 0; | |
243 | } | |
244 | #endif | |
245 | ||
8019ff6c | 246 | static const struct reg_sequence wm8994_revc_patch[] = { |
462835e4 MB |
247 | { 0x102, 0x3 }, |
248 | { 0x56, 0x3 }, | |
249 | { 0x817, 0x0 }, | |
250 | { 0x102, 0x0 }, | |
251 | }; | |
252 | ||
8019ff6c | 253 | static const struct reg_sequence wm8958_reva_patch[] = { |
462835e4 MB |
254 | { 0x102, 0x3 }, |
255 | { 0xcb, 0x81 }, | |
256 | { 0x817, 0x0 }, | |
257 | { 0x102, 0x0 }, | |
258 | }; | |
259 | ||
8019ff6c | 260 | static const struct reg_sequence wm1811_reva_patch[] = { |
462835e4 | 261 | { 0x102, 0x3 }, |
9282a7b9 | 262 | { 0x56, 0xc07 }, |
462835e4 MB |
263 | { 0x5d, 0x7e }, |
264 | { 0x5e, 0x0 }, | |
265 | { 0x102, 0x0 }, | |
266 | }; | |
267 | ||
20fb2772 MB |
268 | #ifdef CONFIG_OF |
269 | static int wm8994_set_pdata_from_of(struct wm8994 *wm8994) | |
270 | { | |
271 | struct device_node *np = wm8994->dev->of_node; | |
272 | struct wm8994_pdata *pdata = &wm8994->pdata; | |
273 | int i; | |
274 | ||
275 | if (!np) | |
276 | return 0; | |
277 | ||
278 | if (of_property_read_u32_array(np, "wlf,gpio-cfg", pdata->gpio_defaults, | |
279 | ARRAY_SIZE(pdata->gpio_defaults)) >= 0) { | |
280 | for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) { | |
281 | if (wm8994->pdata.gpio_defaults[i] == 0) | |
282 | pdata->gpio_defaults[i] | |
283 | = WM8994_CONFIGURE_GPIO; | |
284 | } | |
285 | } | |
286 | ||
287 | of_property_read_u32_array(np, "wlf,micbias-cfg", pdata->micbias, | |
288 | ARRAY_SIZE(pdata->micbias)); | |
289 | ||
290 | pdata->lineout1_diff = true; | |
291 | pdata->lineout2_diff = true; | |
292 | if (of_find_property(np, "wlf,lineout1-se", NULL)) | |
293 | pdata->lineout1_diff = false; | |
294 | if (of_find_property(np, "wlf,lineout2-se", NULL)) | |
295 | pdata->lineout2_diff = false; | |
296 | ||
297 | if (of_find_property(np, "wlf,lineout1-feedback", NULL)) | |
298 | pdata->lineout1fb = true; | |
299 | if (of_find_property(np, "wlf,lineout2-feedback", NULL)) | |
300 | pdata->lineout2fb = true; | |
301 | ||
302 | if (of_find_property(np, "wlf,ldoena-always-driven", NULL)) | |
303 | pdata->lineout2fb = true; | |
304 | ||
102370fb AP |
305 | pdata->spkmode_pu = of_property_read_bool(np, "wlf,spkmode-pu"); |
306 | ||
20fb2772 MB |
307 | pdata->ldo[0].enable = of_get_named_gpio(np, "wlf,ldo1ena", 0); |
308 | if (pdata->ldo[0].enable < 0) | |
309 | pdata->ldo[0].enable = 0; | |
310 | ||
311 | pdata->ldo[1].enable = of_get_named_gpio(np, "wlf,ldo2ena", 0); | |
312 | if (pdata->ldo[1].enable < 0) | |
313 | pdata->ldo[1].enable = 0; | |
314 | ||
315 | return 0; | |
316 | } | |
317 | #else | |
318 | static int wm8994_set_pdata_from_of(struct wm8994 *wm8994) | |
319 | { | |
320 | return 0; | |
321 | } | |
322 | #endif | |
323 | ||
9e501086 MB |
324 | /* |
325 | * Instantiate the generic non-control parts of the device. | |
326 | */ | |
f791be49 | 327 | static int wm8994_device_init(struct wm8994 *wm8994, int irq) |
9e501086 | 328 | { |
a8a8fc28 | 329 | struct wm8994_pdata *pdata; |
34697898 | 330 | struct regmap_config *regmap_config; |
8019ff6c | 331 | const struct reg_sequence *regmap_patch = NULL; |
559e0df6 | 332 | const char *devname; |
222bc784 | 333 | int ret, i, patch_regs = 0; |
26c34c25 | 334 | int pulls = 0; |
9e501086 | 335 | |
a8a8fc28 MB |
336 | if (dev_get_platdata(wm8994->dev)) { |
337 | pdata = dev_get_platdata(wm8994->dev); | |
338 | wm8994->pdata = *pdata; | |
339 | } | |
340 | pdata = &wm8994->pdata; | |
341 | ||
20fb2772 MB |
342 | ret = wm8994_set_pdata_from_of(wm8994); |
343 | if (ret != 0) | |
344 | return ret; | |
345 | ||
9e501086 MB |
346 | dev_set_drvdata(wm8994->dev, wm8994); |
347 | ||
348 | /* Add the on-chip regulators first for bootstrapping */ | |
fef22cb4 | 349 | ret = mfd_add_devices(wm8994->dev, 0, |
9e501086 MB |
350 | wm8994_regulator_devs, |
351 | ARRAY_SIZE(wm8994_regulator_devs), | |
55692af5 | 352 | NULL, 0, NULL); |
9e501086 MB |
353 | if (ret != 0) { |
354 | dev_err(wm8994->dev, "Failed to add children: %d\n", ret); | |
9db4249f | 355 | goto err; |
9e501086 MB |
356 | } |
357 | ||
559e0df6 | 358 | switch (wm8994->type) { |
b1f43bf3 MB |
359 | case WM1811: |
360 | wm8994->num_supplies = ARRAY_SIZE(wm1811_main_supplies); | |
361 | break; | |
559e0df6 MB |
362 | case WM8994: |
363 | wm8994->num_supplies = ARRAY_SIZE(wm8994_main_supplies); | |
364 | break; | |
365 | case WM8958: | |
366 | wm8994->num_supplies = ARRAY_SIZE(wm8958_main_supplies); | |
367 | break; | |
368 | default: | |
369 | BUG(); | |
9db4249f | 370 | goto err; |
559e0df6 MB |
371 | } |
372 | ||
a86854d0 KC |
373 | wm8994->supplies = devm_kcalloc(wm8994->dev, |
374 | wm8994->num_supplies, | |
375 | sizeof(struct regulator_bulk_data), | |
376 | GFP_KERNEL); | |
fccbd21f AL |
377 | if (!wm8994->supplies) { |
378 | ret = -ENOMEM; | |
9db4249f | 379 | goto err; |
fccbd21f | 380 | } |
9e501086 | 381 | |
559e0df6 | 382 | switch (wm8994->type) { |
b1f43bf3 MB |
383 | case WM1811: |
384 | for (i = 0; i < ARRAY_SIZE(wm1811_main_supplies); i++) | |
385 | wm8994->supplies[i].supply = wm1811_main_supplies[i]; | |
386 | break; | |
559e0df6 MB |
387 | case WM8994: |
388 | for (i = 0; i < ARRAY_SIZE(wm8994_main_supplies); i++) | |
389 | wm8994->supplies[i].supply = wm8994_main_supplies[i]; | |
390 | break; | |
391 | case WM8958: | |
392 | for (i = 0; i < ARRAY_SIZE(wm8958_main_supplies); i++) | |
393 | wm8994->supplies[i].supply = wm8958_main_supplies[i]; | |
394 | break; | |
395 | default: | |
396 | BUG(); | |
9db4249f | 397 | goto err; |
559e0df6 | 398 | } |
202b5689 VK |
399 | |
400 | /* | |
401 | * Can't use devres helper here as some of the supplies are provided by | |
402 | * wm8994->dev's children (regulators) and those regulators are | |
403 | * unregistered by the devres core before the supplies are freed. | |
404 | */ | |
405 | ret = regulator_bulk_get(wm8994->dev, wm8994->num_supplies, | |
9e501086 MB |
406 | wm8994->supplies); |
407 | if (ret != 0) { | |
408 | dev_err(wm8994->dev, "Failed to get supplies: %d\n", ret); | |
9db4249f | 409 | goto err; |
9e501086 MB |
410 | } |
411 | ||
3e56c468 | 412 | ret = regulator_bulk_enable(wm8994->num_supplies, wm8994->supplies); |
9e501086 MB |
413 | if (ret != 0) { |
414 | dev_err(wm8994->dev, "Failed to enable supplies: %d\n", ret); | |
202b5689 | 415 | goto err_regulator_free; |
9e501086 MB |
416 | } |
417 | ||
418 | ret = wm8994_reg_read(wm8994, WM8994_SOFTWARE_RESET); | |
419 | if (ret < 0) { | |
420 | dev_err(wm8994->dev, "Failed to read ID register\n"); | |
421 | goto err_enable; | |
422 | } | |
559e0df6 | 423 | switch (ret) { |
b1f43bf3 MB |
424 | case 0x1811: |
425 | devname = "WM1811"; | |
426 | if (wm8994->type != WM1811) | |
427 | dev_warn(wm8994->dev, "Device registered as type %d\n", | |
428 | wm8994->type); | |
429 | wm8994->type = WM1811; | |
430 | break; | |
559e0df6 MB |
431 | case 0x8994: |
432 | devname = "WM8994"; | |
433 | if (wm8994->type != WM8994) | |
434 | dev_warn(wm8994->dev, "Device registered as type %d\n", | |
435 | wm8994->type); | |
436 | wm8994->type = WM8994; | |
437 | break; | |
438 | case 0x8958: | |
439 | devname = "WM8958"; | |
440 | if (wm8994->type != WM8958) | |
441 | dev_warn(wm8994->dev, "Device registered as type %d\n", | |
442 | wm8994->type); | |
443 | wm8994->type = WM8958; | |
444 | break; | |
445 | default: | |
9e501086 MB |
446 | dev_err(wm8994->dev, "Device is not a WM8994, ID is %x\n", |
447 | ret); | |
448 | ret = -EINVAL; | |
449 | goto err_enable; | |
450 | } | |
451 | ||
452 | ret = wm8994_reg_read(wm8994, WM8994_CHIP_REVISION); | |
453 | if (ret < 0) { | |
454 | dev_err(wm8994->dev, "Failed to read revision register: %d\n", | |
455 | ret); | |
456 | goto err_enable; | |
457 | } | |
cc7a7279 MB |
458 | wm8994->revision = ret & WM8994_CHIP_REV_MASK; |
459 | wm8994->cust_id = (ret & WM8994_CUST_ID_MASK) >> WM8994_CUST_ID_SHIFT; | |
9e501086 | 460 | |
a2495bc7 MB |
461 | switch (wm8994->type) { |
462 | case WM8994: | |
7ed5849c | 463 | switch (wm8994->revision) { |
a2495bc7 MB |
464 | case 0: |
465 | case 1: | |
559e0df6 MB |
466 | dev_warn(wm8994->dev, |
467 | "revision %c not fully supported\n", | |
7ed5849c | 468 | 'A' + wm8994->revision); |
a2495bc7 | 469 | break; |
462835e4 MB |
470 | case 2: |
471 | case 3: | |
d54e17f9 | 472 | default: |
462835e4 MB |
473 | regmap_patch = wm8994_revc_patch; |
474 | patch_regs = ARRAY_SIZE(wm8994_revc_patch); | |
475 | break; | |
462835e4 MB |
476 | } |
477 | break; | |
478 | ||
479 | case WM8958: | |
480 | switch (wm8994->revision) { | |
481 | case 0: | |
482 | regmap_patch = wm8958_reva_patch; | |
483 | patch_regs = ARRAY_SIZE(wm8958_reva_patch); | |
484 | break; | |
a2495bc7 MB |
485 | default: |
486 | break; | |
487 | } | |
9e501086 | 488 | break; |
462835e4 | 489 | |
443e67ed MB |
490 | case WM1811: |
491 | /* Revision C did not change the relevant layer */ | |
7ed5849c MB |
492 | if (wm8994->revision > 1) |
493 | wm8994->revision++; | |
d54e17f9 MB |
494 | |
495 | regmap_patch = wm1811_reva_patch; | |
496 | patch_regs = ARRAY_SIZE(wm1811_reva_patch); | |
443e67ed | 497 | break; |
462835e4 | 498 | |
9e501086 | 499 | default: |
9e501086 MB |
500 | break; |
501 | } | |
502 | ||
cc7a7279 MB |
503 | dev_info(wm8994->dev, "%s revision %c CUST_ID %02x\n", devname, |
504 | 'A' + wm8994->revision, wm8994->cust_id); | |
9e501086 | 505 | |
34697898 MB |
506 | switch (wm8994->type) { |
507 | case WM1811: | |
508 | regmap_config = &wm1811_regmap_config; | |
509 | break; | |
510 | case WM8994: | |
511 | regmap_config = &wm8994_regmap_config; | |
512 | break; | |
513 | case WM8958: | |
514 | regmap_config = &wm8958_regmap_config; | |
515 | break; | |
516 | default: | |
517 | dev_err(wm8994->dev, "Unknown device type %d\n", wm8994->type); | |
df47df55 AB |
518 | ret = -EINVAL; |
519 | goto err_enable; | |
34697898 MB |
520 | } |
521 | ||
522 | ret = regmap_reinit_cache(wm8994->regmap, regmap_config); | |
523 | if (ret != 0) { | |
524 | dev_err(wm8994->dev, "Failed to reinit register cache: %d\n", | |
525 | ret); | |
df47df55 | 526 | goto err_enable; |
34697898 | 527 | } |
9e501086 | 528 | |
f3799e93 MB |
529 | /* Explicitly put the device into reset in case regulators |
530 | * don't get disabled in order to ensure we know the device | |
531 | * state. | |
532 | */ | |
533 | ret = wm8994_reg_write(wm8994, WM8994_SOFTWARE_RESET, | |
534 | wm8994_reg_read(wm8994, WM8994_SOFTWARE_RESET)); | |
535 | if (ret != 0) { | |
536 | dev_err(wm8994->dev, "Failed to reset device: %d\n", ret); | |
df47df55 | 537 | goto err_enable; |
f3799e93 MB |
538 | } |
539 | ||
462835e4 MB |
540 | if (regmap_patch) { |
541 | ret = regmap_register_patch(wm8994->regmap, regmap_patch, | |
542 | patch_regs); | |
543 | if (ret != 0) { | |
544 | dev_err(wm8994->dev, "Failed to register patch: %d\n", | |
545 | ret); | |
df47df55 | 546 | goto err_enable; |
462835e4 MB |
547 | } |
548 | } | |
549 | ||
a8a8fc28 MB |
550 | wm8994->irq_base = pdata->irq_base; |
551 | wm8994->gpio_base = pdata->gpio_base; | |
552 | ||
553 | /* GPIO configuration is only applied if it's non-zero */ | |
554 | for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) { | |
555 | if (pdata->gpio_defaults[i]) { | |
556 | wm8994_set_bits(wm8994, WM8994_GPIO_1 + i, | |
557 | 0xffff, pdata->gpio_defaults[i]); | |
9e501086 | 558 | } |
a8a8fc28 | 559 | } |
881de670 | 560 | |
a8a8fc28 | 561 | wm8994->ldo_ena_always_driven = pdata->ldo_ena_always_driven; |
26c34c25 | 562 | |
a8a8fc28 MB |
563 | if (pdata->spkmode_pu) |
564 | pulls |= WM8994_SPKMODE_PU; | |
9e501086 | 565 | |
26c34c25 | 566 | /* Disable unneeded pulls */ |
881de670 | 567 | wm8994_set_bits(wm8994, WM8994_PULL_CONTROL_2, |
26c34c25 MB |
568 | WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD | |
569 | WM8994_SPKMODE_PU | WM8994_CSNADDR_PD, | |
570 | pulls); | |
881de670 | 571 | |
9e501086 MB |
572 | /* In some system designs where the regulators are not in use, |
573 | * we can achieve a small reduction in leakage currents by | |
574 | * floating LDO outputs. This bit makes no difference if the | |
575 | * LDOs are enabled, it only affects cases where the LDOs were | |
576 | * in operation and are then disabled. | |
577 | */ | |
578 | for (i = 0; i < WM8994_NUM_LDO_REGS; i++) { | |
579 | if (wm8994_ldo_in_use(pdata, i)) | |
580 | wm8994_set_bits(wm8994, WM8994_LDO_1 + i, | |
581 | WM8994_LDO1_DISCH, WM8994_LDO1_DISCH); | |
582 | else | |
583 | wm8994_set_bits(wm8994, WM8994_LDO_1 + i, | |
584 | WM8994_LDO1_DISCH, 0); | |
585 | } | |
586 | ||
c9fbf7e0 MB |
587 | wm8994_irq_init(wm8994); |
588 | ||
9e501086 MB |
589 | ret = mfd_add_devices(wm8994->dev, -1, |
590 | wm8994_devs, ARRAY_SIZE(wm8994_devs), | |
55692af5 | 591 | NULL, 0, NULL); |
9e501086 MB |
592 | if (ret != 0) { |
593 | dev_err(wm8994->dev, "Failed to add children: %d\n", ret); | |
c9fbf7e0 | 594 | goto err_irq; |
9e501086 MB |
595 | } |
596 | ||
d450f19e | 597 | pm_runtime_enable(wm8994->dev); |
ee67b0cd | 598 | pm_runtime_idle(wm8994->dev); |
d450f19e | 599 | |
9e501086 MB |
600 | return 0; |
601 | ||
c9fbf7e0 MB |
602 | err_irq: |
603 | wm8994_irq_exit(wm8994); | |
9e501086 | 604 | err_enable: |
559e0df6 | 605 | regulator_bulk_disable(wm8994->num_supplies, |
9e501086 | 606 | wm8994->supplies); |
202b5689 VK |
607 | err_regulator_free: |
608 | regulator_bulk_free(wm8994->num_supplies, wm8994->supplies); | |
9db4249f | 609 | err: |
9e501086 | 610 | mfd_remove_devices(wm8994->dev); |
9e501086 MB |
611 | return ret; |
612 | } | |
613 | ||
4740f73f | 614 | static void wm8994_device_exit(struct wm8994 *wm8994) |
9e501086 | 615 | { |
d450f19e | 616 | pm_runtime_disable(wm8994->dev); |
c9fbf7e0 | 617 | wm8994_irq_exit(wm8994); |
3e56c468 | 618 | regulator_bulk_disable(wm8994->num_supplies, wm8994->supplies); |
202b5689 | 619 | regulator_bulk_free(wm8994->num_supplies, wm8994->supplies); |
bb63f7d3 | 620 | mfd_remove_devices(wm8994->dev); |
9e501086 MB |
621 | } |
622 | ||
cf763c2e | 623 | static const struct of_device_id wm8994_of_match[] = { |
39aa3b5a MB |
624 | { .compatible = "wlf,wm1811", .data = (void *)WM1811 }, |
625 | { .compatible = "wlf,wm8994", .data = (void *)WM8994 }, | |
626 | { .compatible = "wlf,wm8958", .data = (void *)WM8958 }, | |
cf763c2e MB |
627 | { } |
628 | }; | |
629 | MODULE_DEVICE_TABLE(of, wm8994_of_match); | |
630 | ||
f791be49 | 631 | static int wm8994_i2c_probe(struct i2c_client *i2c, |
027d6766 | 632 | const struct i2c_device_id *id) |
9e501086 | 633 | { |
20fb2772 | 634 | const struct of_device_id *of_id; |
9e501086 | 635 | struct wm8994 *wm8994; |
d6c645fc | 636 | int ret; |
9e501086 | 637 | |
2fa33494 | 638 | wm8994 = devm_kzalloc(&i2c->dev, sizeof(struct wm8994), GFP_KERNEL); |
d0a11693 | 639 | if (wm8994 == NULL) |
9e501086 | 640 | return -ENOMEM; |
9e501086 MB |
641 | |
642 | i2c_set_clientdata(i2c, wm8994); | |
643 | wm8994->dev = &i2c->dev; | |
c9fbf7e0 | 644 | wm8994->irq = i2c->irq; |
20fb2772 MB |
645 | |
646 | if (i2c->dev.of_node) { | |
647 | of_id = of_match_device(wm8994_of_match, &i2c->dev); | |
648 | if (of_id) | |
7f8279ce | 649 | wm8994->type = (enum wm8994_type)of_id->data; |
20fb2772 MB |
650 | } else { |
651 | wm8994->type = id->driver_data; | |
652 | } | |
9e501086 | 653 | |
9db4249f | 654 | wm8994->regmap = devm_regmap_init_i2c(i2c, &wm8994_base_regmap_config); |
d6c645fc MB |
655 | if (IS_ERR(wm8994->regmap)) { |
656 | ret = PTR_ERR(wm8994->regmap); | |
657 | dev_err(wm8994->dev, "Failed to allocate register map: %d\n", | |
658 | ret); | |
d6c645fc MB |
659 | return ret; |
660 | } | |
661 | ||
559e0df6 | 662 | return wm8994_device_init(wm8994, i2c->irq); |
9e501086 MB |
663 | } |
664 | ||
4740f73f | 665 | static int wm8994_i2c_remove(struct i2c_client *i2c) |
9e501086 MB |
666 | { |
667 | struct wm8994 *wm8994 = i2c_get_clientdata(i2c); | |
668 | ||
669 | wm8994_device_exit(wm8994); | |
670 | ||
671 | return 0; | |
672 | } | |
673 | ||
9e501086 | 674 | static const struct i2c_device_id wm8994_i2c_id[] = { |
b1f43bf3 | 675 | { "wm1811", WM1811 }, |
71d17184 | 676 | { "wm1811a", WM1811 }, |
559e0df6 MB |
677 | { "wm8994", WM8994 }, |
678 | { "wm8958", WM8958 }, | |
9e501086 MB |
679 | { } |
680 | }; | |
681 | MODULE_DEVICE_TABLE(i2c, wm8994_i2c_id); | |
682 | ||
6394678e MB |
683 | static const struct dev_pm_ops wm8994_pm_ops = { |
684 | SET_RUNTIME_PM_OPS(wm8994_suspend, wm8994_resume, NULL) | |
685 | }; | |
d450f19e | 686 | |
9e501086 MB |
687 | static struct i2c_driver wm8994_i2c_driver = { |
688 | .driver = { | |
d450f19e | 689 | .name = "wm8994", |
d450f19e | 690 | .pm = &wm8994_pm_ops, |
20fb2772 | 691 | .of_match_table = of_match_ptr(wm8994_of_match), |
9e501086 MB |
692 | }, |
693 | .probe = wm8994_i2c_probe, | |
84449216 | 694 | .remove = wm8994_i2c_remove, |
9e501086 MB |
695 | .id_table = wm8994_i2c_id, |
696 | }; | |
697 | ||
ceb57d27 | 698 | module_i2c_driver(wm8994_i2c_driver); |
9e501086 MB |
699 | |
700 | MODULE_DESCRIPTION("Core support for the WM8994 audio CODEC"); | |
701 | MODULE_LICENSE("GPL"); | |
702 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); |