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> | |
d450f19e | 22 | #include <linux/pm_runtime.h> |
d6c645fc | 23 | #include <linux/regmap.h> |
9e501086 MB |
24 | #include <linux/regulator/consumer.h> |
25 | #include <linux/regulator/machine.h> | |
26 | ||
27 | #include <linux/mfd/wm8994/core.h> | |
28 | #include <linux/mfd/wm8994/pdata.h> | |
29 | #include <linux/mfd/wm8994/registers.h> | |
30 | ||
c3f13861 | 31 | #include "wm8994.h" |
9e501086 MB |
32 | |
33 | /** | |
34 | * wm8994_reg_read: Read a single WM8994 register. | |
35 | * | |
36 | * @wm8994: Device to read from. | |
37 | * @reg: Register to read. | |
38 | */ | |
39 | int wm8994_reg_read(struct wm8994 *wm8994, unsigned short reg) | |
40 | { | |
d6c645fc | 41 | unsigned int val; |
9e501086 MB |
42 | int ret; |
43 | ||
d6c645fc | 44 | ret = regmap_read(wm8994->regmap, reg, &val); |
9e501086 MB |
45 | |
46 | if (ret < 0) | |
47 | return ret; | |
48 | else | |
d6c645fc | 49 | return val; |
9e501086 MB |
50 | } |
51 | EXPORT_SYMBOL_GPL(wm8994_reg_read); | |
52 | ||
53 | /** | |
54 | * wm8994_bulk_read: Read multiple WM8994 registers | |
55 | * | |
56 | * @wm8994: Device to read from | |
57 | * @reg: First register | |
58 | * @count: Number of registers | |
316b6cc0 | 59 | * @buf: Buffer to fill. The data will be returned big endian. |
9e501086 MB |
60 | */ |
61 | int wm8994_bulk_read(struct wm8994 *wm8994, unsigned short reg, | |
62 | int count, u16 *buf) | |
63 | { | |
d6c645fc | 64 | return regmap_bulk_read(wm8994->regmap, reg, buf, count); |
9e501086 | 65 | } |
9e501086 | 66 | |
9e501086 MB |
67 | /** |
68 | * wm8994_reg_write: Write a single WM8994 register. | |
69 | * | |
70 | * @wm8994: Device to write to. | |
71 | * @reg: Register to write to. | |
72 | * @val: Value to write. | |
73 | */ | |
74 | int wm8994_reg_write(struct wm8994 *wm8994, unsigned short reg, | |
75 | unsigned short val) | |
76 | { | |
d6c645fc | 77 | return regmap_write(wm8994->regmap, reg, val); |
9e501086 MB |
78 | } |
79 | EXPORT_SYMBOL_GPL(wm8994_reg_write); | |
80 | ||
e93c5387 MB |
81 | /** |
82 | * wm8994_bulk_write: Write multiple WM8994 registers | |
83 | * | |
84 | * @wm8994: Device to write to | |
85 | * @reg: First register | |
86 | * @count: Number of registers | |
4277163c | 87 | * @buf: Buffer to write from. Data must be big-endian formatted. |
e93c5387 MB |
88 | */ |
89 | int wm8994_bulk_write(struct wm8994 *wm8994, unsigned short reg, | |
07e73fbb | 90 | int count, const u16 *buf) |
e93c5387 | 91 | { |
d6c645fc | 92 | return regmap_raw_write(wm8994->regmap, reg, buf, count * sizeof(u16)); |
e93c5387 MB |
93 | } |
94 | EXPORT_SYMBOL_GPL(wm8994_bulk_write); | |
95 | ||
9e501086 MB |
96 | /** |
97 | * wm8994_set_bits: Set the value of a bitfield in a WM8994 register | |
98 | * | |
99 | * @wm8994: Device to write to. | |
100 | * @reg: Register to write to. | |
101 | * @mask: Mask of bits to set. | |
102 | * @val: Value to set (unshifted) | |
103 | */ | |
104 | int wm8994_set_bits(struct wm8994 *wm8994, unsigned short reg, | |
105 | unsigned short mask, unsigned short val) | |
106 | { | |
d6c645fc | 107 | return regmap_update_bits(wm8994->regmap, reg, mask, val); |
9e501086 MB |
108 | } |
109 | EXPORT_SYMBOL_GPL(wm8994_set_bits); | |
110 | ||
111 | static struct mfd_cell wm8994_regulator_devs[] = { | |
d450f19e MB |
112 | { |
113 | .name = "wm8994-ldo", | |
114 | .id = 1, | |
115 | .pm_runtime_no_callbacks = true, | |
116 | }, | |
117 | { | |
118 | .name = "wm8994-ldo", | |
119 | .id = 2, | |
120 | .pm_runtime_no_callbacks = true, | |
121 | }, | |
9e501086 MB |
122 | }; |
123 | ||
c9fbf7e0 MB |
124 | static struct resource wm8994_codec_resources[] = { |
125 | { | |
126 | .start = WM8994_IRQ_TEMP_SHUT, | |
127 | .end = WM8994_IRQ_TEMP_WARN, | |
128 | .flags = IORESOURCE_IRQ, | |
129 | }, | |
130 | }; | |
131 | ||
132 | static struct resource wm8994_gpio_resources[] = { | |
133 | { | |
134 | .start = WM8994_IRQ_GPIO(1), | |
135 | .end = WM8994_IRQ_GPIO(11), | |
136 | .flags = IORESOURCE_IRQ, | |
137 | }, | |
138 | }; | |
139 | ||
9e501086 | 140 | static struct mfd_cell wm8994_devs[] = { |
c9fbf7e0 MB |
141 | { |
142 | .name = "wm8994-codec", | |
143 | .num_resources = ARRAY_SIZE(wm8994_codec_resources), | |
144 | .resources = wm8994_codec_resources, | |
145 | }, | |
146 | ||
147 | { | |
148 | .name = "wm8994-gpio", | |
149 | .num_resources = ARRAY_SIZE(wm8994_gpio_resources), | |
150 | .resources = wm8994_gpio_resources, | |
d450f19e | 151 | .pm_runtime_no_callbacks = true, |
c9fbf7e0 | 152 | }, |
9e501086 MB |
153 | }; |
154 | ||
155 | /* | |
156 | * Supplies for the main bulk of CODEC; the LDO supplies are ignored | |
157 | * and should be handled via the standard regulator API supply | |
158 | * management. | |
159 | */ | |
b1f43bf3 MB |
160 | static const char *wm1811_main_supplies[] = { |
161 | "DBVDD1", | |
162 | "DBVDD2", | |
163 | "DBVDD3", | |
164 | "DCVDD", | |
165 | "AVDD1", | |
166 | "AVDD2", | |
167 | "CPVDD", | |
168 | "SPKVDD1", | |
169 | "SPKVDD2", | |
170 | }; | |
171 | ||
9e501086 MB |
172 | static const char *wm8994_main_supplies[] = { |
173 | "DBVDD", | |
174 | "DCVDD", | |
175 | "AVDD1", | |
176 | "AVDD2", | |
177 | "CPVDD", | |
178 | "SPKVDD1", | |
179 | "SPKVDD2", | |
180 | }; | |
181 | ||
559e0df6 MB |
182 | static const char *wm8958_main_supplies[] = { |
183 | "DBVDD1", | |
184 | "DBVDD2", | |
185 | "DBVDD3", | |
186 | "DCVDD", | |
187 | "AVDD1", | |
188 | "AVDD2", | |
189 | "CPVDD", | |
190 | "SPKVDD1", | |
191 | "SPKVDD2", | |
192 | }; | |
193 | ||
9e501086 | 194 | #ifdef CONFIG_PM |
d450f19e | 195 | static int wm8994_suspend(struct device *dev) |
9e501086 MB |
196 | { |
197 | struct wm8994 *wm8994 = dev_get_drvdata(dev); | |
198 | int ret; | |
199 | ||
77bd70e9 MB |
200 | /* Don't actually go through with the suspend if the CODEC is |
201 | * still active (eg, for audio passthrough from CP. */ | |
202 | ret = wm8994_reg_read(wm8994, WM8994_POWER_MANAGEMENT_1); | |
203 | if (ret < 0) { | |
204 | dev_err(dev, "Failed to read power status: %d\n", ret); | |
205 | } else if (ret & WM8994_VMID_SEL_MASK) { | |
206 | dev_dbg(dev, "CODEC still active, ignoring suspend\n"); | |
207 | return 0; | |
208 | } | |
209 | ||
5f40c6b6 MB |
210 | ret = wm8994_reg_read(wm8994, WM8994_POWER_MANAGEMENT_4); |
211 | if (ret < 0) { | |
212 | dev_err(dev, "Failed to read power status: %d\n", ret); | |
213 | } else if (ret & (WM8994_AIF2ADCL_ENA | WM8994_AIF2ADCR_ENA | | |
214 | WM8994_AIF1ADC2L_ENA | WM8994_AIF1ADC2R_ENA | | |
215 | WM8994_AIF1ADC1L_ENA | WM8994_AIF1ADC1R_ENA)) { | |
216 | dev_dbg(dev, "CODEC still active, ignoring suspend\n"); | |
217 | return 0; | |
218 | } | |
219 | ||
220 | ret = wm8994_reg_read(wm8994, WM8994_POWER_MANAGEMENT_5); | |
221 | if (ret < 0) { | |
222 | dev_err(dev, "Failed to read power status: %d\n", ret); | |
223 | } else if (ret & (WM8994_AIF2DACL_ENA | WM8994_AIF2DACR_ENA | | |
224 | WM8994_AIF1DAC2L_ENA | WM8994_AIF1DAC2R_ENA | | |
225 | WM8994_AIF1DAC1L_ENA | WM8994_AIF1DAC1R_ENA)) { | |
226 | dev_dbg(dev, "CODEC still active, ignoring suspend\n"); | |
227 | return 0; | |
228 | } | |
229 | ||
230 | switch (wm8994->type) { | |
231 | case WM8958: | |
b5488b6e | 232 | case WM1811: |
5f40c6b6 MB |
233 | ret = wm8994_reg_read(wm8994, WM8958_MIC_DETECT_1); |
234 | if (ret < 0) { | |
235 | dev_err(dev, "Failed to read power status: %d\n", ret); | |
236 | } else if (ret & WM8958_MICD_ENA) { | |
237 | dev_dbg(dev, "CODEC still active, ignoring suspend\n"); | |
238 | return 0; | |
239 | } | |
240 | break; | |
241 | default: | |
242 | break; | |
243 | } | |
244 | ||
e7c248a0 MB |
245 | switch (wm8994->type) { |
246 | case WM1811: | |
247 | ret = wm8994_reg_read(wm8994, WM8994_ANTIPOP_2); | |
248 | if (ret < 0) { | |
249 | dev_err(dev, "Failed to read jackdet: %d\n", ret); | |
250 | } else if (ret & WM1811_JACKDET_MODE_MASK) { | |
251 | dev_dbg(dev, "CODEC still active, ignoring suspend\n"); | |
252 | return 0; | |
253 | } | |
254 | break; | |
255 | default: | |
256 | break; | |
257 | } | |
258 | ||
a3462490 MB |
259 | switch (wm8994->type) { |
260 | case WM1811: | |
261 | ret = wm8994_reg_read(wm8994, WM8994_ANTIPOP_2); | |
262 | if (ret < 0) { | |
263 | dev_err(dev, "Failed to read jackdet: %d\n", ret); | |
264 | } else if (ret & WM1811_JACKDET_MODE_MASK) { | |
265 | dev_dbg(dev, "CODEC still active, ignoring suspend\n"); | |
266 | return 0; | |
267 | } | |
268 | break; | |
269 | default: | |
270 | break; | |
271 | } | |
272 | ||
881de670 MB |
273 | /* Disable LDO pulldowns while the device is suspended if we |
274 | * don't know that something will be driving them. */ | |
275 | if (!wm8994->ldo_ena_always_driven) | |
276 | wm8994_set_bits(wm8994, WM8994_PULL_CONTROL_2, | |
277 | WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD, | |
278 | WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD); | |
279 | ||
f40dff9e MB |
280 | /* Explicitly put the device into reset in case regulators |
281 | * don't get disabled in order to ensure consistent restart. | |
282 | */ | |
be79cf2f MB |
283 | wm8994_reg_write(wm8994, WM8994_SOFTWARE_RESET, |
284 | wm8994_reg_read(wm8994, WM8994_SOFTWARE_RESET)); | |
f40dff9e | 285 | |
3befc925 | 286 | regcache_cache_only(wm8994->regmap, true); |
c3f13861 | 287 | regcache_mark_dirty(wm8994->regmap); |
f40dff9e | 288 | |
77bd70e9 MB |
289 | wm8994->suspended = true; |
290 | ||
559e0df6 | 291 | ret = regulator_bulk_disable(wm8994->num_supplies, |
9e501086 MB |
292 | wm8994->supplies); |
293 | if (ret != 0) { | |
294 | dev_err(dev, "Failed to disable supplies: %d\n", ret); | |
295 | return ret; | |
296 | } | |
297 | ||
298 | return 0; | |
299 | } | |
300 | ||
d450f19e | 301 | static int wm8994_resume(struct device *dev) |
9e501086 MB |
302 | { |
303 | struct wm8994 *wm8994 = dev_get_drvdata(dev); | |
c3f13861 | 304 | int ret; |
9e501086 | 305 | |
77bd70e9 MB |
306 | /* We may have lied to the PM core about suspending */ |
307 | if (!wm8994->suspended) | |
308 | return 0; | |
309 | ||
559e0df6 | 310 | ret = regulator_bulk_enable(wm8994->num_supplies, |
9e501086 MB |
311 | wm8994->supplies); |
312 | if (ret != 0) { | |
313 | dev_err(dev, "Failed to enable supplies: %d\n", ret); | |
314 | return ret; | |
315 | } | |
316 | ||
3befc925 | 317 | regcache_cache_only(wm8994->regmap, false); |
c3f13861 MB |
318 | ret = regcache_sync(wm8994->regmap); |
319 | if (ret != 0) { | |
320 | dev_err(dev, "Failed to restore register map: %d\n", ret); | |
321 | goto err_enable; | |
98ae1cca | 322 | } |
c9fbf7e0 | 323 | |
881de670 MB |
324 | /* Disable LDO pulldowns while the device is active */ |
325 | wm8994_set_bits(wm8994, WM8994_PULL_CONTROL_2, | |
326 | WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD, | |
327 | 0); | |
328 | ||
77bd70e9 MB |
329 | wm8994->suspended = false; |
330 | ||
9e501086 | 331 | return 0; |
c3f13861 MB |
332 | |
333 | err_enable: | |
334 | regulator_bulk_disable(wm8994->num_supplies, wm8994->supplies); | |
335 | ||
336 | return ret; | |
9e501086 MB |
337 | } |
338 | #endif | |
339 | ||
340 | #ifdef CONFIG_REGULATOR | |
341 | static int wm8994_ldo_in_use(struct wm8994_pdata *pdata, int ldo) | |
342 | { | |
343 | struct wm8994_ldo_pdata *ldo_pdata; | |
344 | ||
345 | if (!pdata) | |
346 | return 0; | |
347 | ||
348 | ldo_pdata = &pdata->ldo[ldo]; | |
349 | ||
350 | if (!ldo_pdata->init_data) | |
351 | return 0; | |
352 | ||
353 | return ldo_pdata->init_data->num_consumer_supplies != 0; | |
354 | } | |
355 | #else | |
356 | static int wm8994_ldo_in_use(struct wm8994_pdata *pdata, int ldo) | |
357 | { | |
358 | return 0; | |
359 | } | |
360 | #endif | |
361 | ||
462835e4 MB |
362 | static const __devinitdata struct reg_default wm8994_revc_patch[] = { |
363 | { 0x102, 0x3 }, | |
364 | { 0x56, 0x3 }, | |
365 | { 0x817, 0x0 }, | |
366 | { 0x102, 0x0 }, | |
367 | }; | |
368 | ||
369 | static const __devinitdata struct reg_default wm8958_reva_patch[] = { | |
370 | { 0x102, 0x3 }, | |
371 | { 0xcb, 0x81 }, | |
372 | { 0x817, 0x0 }, | |
373 | { 0x102, 0x0 }, | |
374 | }; | |
375 | ||
376 | static const __devinitdata struct reg_default wm1811_reva_patch[] = { | |
377 | { 0x102, 0x3 }, | |
a0cc0209 | 378 | { 0x56, 0x7 }, |
462835e4 MB |
379 | { 0x5d, 0x7e }, |
380 | { 0x5e, 0x0 }, | |
381 | { 0x102, 0x0 }, | |
382 | }; | |
383 | ||
9e501086 MB |
384 | /* |
385 | * Instantiate the generic non-control parts of the device. | |
386 | */ | |
abc0ccea | 387 | static __devinit int wm8994_device_init(struct wm8994 *wm8994, int irq) |
9e501086 MB |
388 | { |
389 | struct wm8994_pdata *pdata = wm8994->dev->platform_data; | |
34697898 | 390 | struct regmap_config *regmap_config; |
462835e4 | 391 | const struct reg_default *regmap_patch = NULL; |
559e0df6 | 392 | const char *devname; |
462835e4 | 393 | int ret, i, patch_regs; |
26c34c25 | 394 | int pulls = 0; |
9e501086 | 395 | |
9e501086 MB |
396 | dev_set_drvdata(wm8994->dev, wm8994); |
397 | ||
398 | /* Add the on-chip regulators first for bootstrapping */ | |
399 | ret = mfd_add_devices(wm8994->dev, -1, | |
400 | wm8994_regulator_devs, | |
401 | ARRAY_SIZE(wm8994_regulator_devs), | |
402 | NULL, 0); | |
403 | if (ret != 0) { | |
404 | dev_err(wm8994->dev, "Failed to add children: %d\n", ret); | |
9db4249f | 405 | goto err; |
9e501086 MB |
406 | } |
407 | ||
559e0df6 | 408 | switch (wm8994->type) { |
b1f43bf3 MB |
409 | case WM1811: |
410 | wm8994->num_supplies = ARRAY_SIZE(wm1811_main_supplies); | |
411 | break; | |
559e0df6 MB |
412 | case WM8994: |
413 | wm8994->num_supplies = ARRAY_SIZE(wm8994_main_supplies); | |
414 | break; | |
415 | case WM8958: | |
416 | wm8994->num_supplies = ARRAY_SIZE(wm8958_main_supplies); | |
417 | break; | |
418 | default: | |
419 | BUG(); | |
9db4249f | 420 | goto err; |
559e0df6 MB |
421 | } |
422 | ||
2fa33494 MB |
423 | wm8994->supplies = devm_kzalloc(wm8994->dev, |
424 | sizeof(struct regulator_bulk_data) * | |
425 | wm8994->num_supplies, GFP_KERNEL); | |
fccbd21f AL |
426 | if (!wm8994->supplies) { |
427 | ret = -ENOMEM; | |
9db4249f | 428 | goto err; |
fccbd21f | 429 | } |
9e501086 | 430 | |
559e0df6 | 431 | switch (wm8994->type) { |
b1f43bf3 MB |
432 | case WM1811: |
433 | for (i = 0; i < ARRAY_SIZE(wm1811_main_supplies); i++) | |
434 | wm8994->supplies[i].supply = wm1811_main_supplies[i]; | |
435 | break; | |
559e0df6 MB |
436 | case WM8994: |
437 | for (i = 0; i < ARRAY_SIZE(wm8994_main_supplies); i++) | |
438 | wm8994->supplies[i].supply = wm8994_main_supplies[i]; | |
439 | break; | |
440 | case WM8958: | |
441 | for (i = 0; i < ARRAY_SIZE(wm8958_main_supplies); i++) | |
442 | wm8994->supplies[i].supply = wm8958_main_supplies[i]; | |
443 | break; | |
444 | default: | |
445 | BUG(); | |
9db4249f | 446 | goto err; |
559e0df6 MB |
447 | } |
448 | ||
449 | ret = regulator_bulk_get(wm8994->dev, wm8994->num_supplies, | |
9e501086 MB |
450 | wm8994->supplies); |
451 | if (ret != 0) { | |
452 | dev_err(wm8994->dev, "Failed to get supplies: %d\n", ret); | |
9db4249f | 453 | goto err; |
9e501086 MB |
454 | } |
455 | ||
559e0df6 | 456 | ret = regulator_bulk_enable(wm8994->num_supplies, |
9e501086 MB |
457 | wm8994->supplies); |
458 | if (ret != 0) { | |
459 | dev_err(wm8994->dev, "Failed to enable supplies: %d\n", ret); | |
7731074a | 460 | goto err_get; |
9e501086 MB |
461 | } |
462 | ||
463 | ret = wm8994_reg_read(wm8994, WM8994_SOFTWARE_RESET); | |
464 | if (ret < 0) { | |
465 | dev_err(wm8994->dev, "Failed to read ID register\n"); | |
466 | goto err_enable; | |
467 | } | |
559e0df6 | 468 | switch (ret) { |
b1f43bf3 MB |
469 | case 0x1811: |
470 | devname = "WM1811"; | |
471 | if (wm8994->type != WM1811) | |
472 | dev_warn(wm8994->dev, "Device registered as type %d\n", | |
473 | wm8994->type); | |
474 | wm8994->type = WM1811; | |
475 | break; | |
559e0df6 MB |
476 | case 0x8994: |
477 | devname = "WM8994"; | |
478 | if (wm8994->type != WM8994) | |
479 | dev_warn(wm8994->dev, "Device registered as type %d\n", | |
480 | wm8994->type); | |
481 | wm8994->type = WM8994; | |
482 | break; | |
483 | case 0x8958: | |
484 | devname = "WM8958"; | |
485 | if (wm8994->type != WM8958) | |
486 | dev_warn(wm8994->dev, "Device registered as type %d\n", | |
487 | wm8994->type); | |
488 | wm8994->type = WM8958; | |
489 | break; | |
490 | default: | |
9e501086 MB |
491 | dev_err(wm8994->dev, "Device is not a WM8994, ID is %x\n", |
492 | ret); | |
493 | ret = -EINVAL; | |
494 | goto err_enable; | |
495 | } | |
496 | ||
497 | ret = wm8994_reg_read(wm8994, WM8994_CHIP_REVISION); | |
498 | if (ret < 0) { | |
499 | dev_err(wm8994->dev, "Failed to read revision register: %d\n", | |
500 | ret); | |
501 | goto err_enable; | |
502 | } | |
7ed5849c | 503 | wm8994->revision = ret; |
9e501086 | 504 | |
a2495bc7 MB |
505 | switch (wm8994->type) { |
506 | case WM8994: | |
7ed5849c | 507 | switch (wm8994->revision) { |
a2495bc7 MB |
508 | case 0: |
509 | case 1: | |
559e0df6 MB |
510 | dev_warn(wm8994->dev, |
511 | "revision %c not fully supported\n", | |
7ed5849c | 512 | 'A' + wm8994->revision); |
a2495bc7 | 513 | break; |
462835e4 MB |
514 | case 2: |
515 | case 3: | |
516 | regmap_patch = wm8994_revc_patch; | |
517 | patch_regs = ARRAY_SIZE(wm8994_revc_patch); | |
518 | break; | |
519 | default: | |
520 | break; | |
521 | } | |
522 | break; | |
523 | ||
524 | case WM8958: | |
525 | switch (wm8994->revision) { | |
526 | case 0: | |
527 | regmap_patch = wm8958_reva_patch; | |
528 | patch_regs = ARRAY_SIZE(wm8958_reva_patch); | |
529 | break; | |
a2495bc7 MB |
530 | default: |
531 | break; | |
532 | } | |
9e501086 | 533 | break; |
462835e4 | 534 | |
443e67ed MB |
535 | case WM1811: |
536 | /* Revision C did not change the relevant layer */ | |
7ed5849c MB |
537 | if (wm8994->revision > 1) |
538 | wm8994->revision++; | |
462835e4 MB |
539 | switch (wm8994->revision) { |
540 | case 0: | |
541 | case 1: | |
a0cc0209 MB |
542 | case 2: |
543 | case 3: | |
462835e4 MB |
544 | regmap_patch = wm1811_reva_patch; |
545 | patch_regs = ARRAY_SIZE(wm1811_reva_patch); | |
546 | break; | |
547 | default: | |
548 | break; | |
549 | } | |
443e67ed | 550 | break; |
462835e4 | 551 | |
9e501086 | 552 | default: |
9e501086 MB |
553 | break; |
554 | } | |
555 | ||
7ed5849c MB |
556 | dev_info(wm8994->dev, "%s revision %c\n", devname, |
557 | 'A' + wm8994->revision); | |
9e501086 | 558 | |
34697898 MB |
559 | switch (wm8994->type) { |
560 | case WM1811: | |
561 | regmap_config = &wm1811_regmap_config; | |
562 | break; | |
563 | case WM8994: | |
564 | regmap_config = &wm8994_regmap_config; | |
565 | break; | |
566 | case WM8958: | |
567 | regmap_config = &wm8958_regmap_config; | |
568 | break; | |
569 | default: | |
570 | dev_err(wm8994->dev, "Unknown device type %d\n", wm8994->type); | |
571 | return -EINVAL; | |
572 | } | |
573 | ||
574 | ret = regmap_reinit_cache(wm8994->regmap, regmap_config); | |
575 | if (ret != 0) { | |
576 | dev_err(wm8994->dev, "Failed to reinit register cache: %d\n", | |
577 | ret); | |
578 | return ret; | |
579 | } | |
9e501086 | 580 | |
462835e4 MB |
581 | if (regmap_patch) { |
582 | ret = regmap_register_patch(wm8994->regmap, regmap_patch, | |
583 | patch_regs); | |
584 | if (ret != 0) { | |
585 | dev_err(wm8994->dev, "Failed to register patch: %d\n", | |
586 | ret); | |
9db4249f | 587 | goto err; |
462835e4 MB |
588 | } |
589 | } | |
590 | ||
9e501086 | 591 | if (pdata) { |
c9fbf7e0 | 592 | wm8994->irq_base = pdata->irq_base; |
9e501086 MB |
593 | wm8994->gpio_base = pdata->gpio_base; |
594 | ||
595 | /* GPIO configuration is only applied if it's non-zero */ | |
596 | for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) { | |
597 | if (pdata->gpio_defaults[i]) { | |
598 | wm8994_set_bits(wm8994, WM8994_GPIO_1 + i, | |
599 | 0xffff, | |
600 | pdata->gpio_defaults[i]); | |
601 | } | |
602 | } | |
881de670 MB |
603 | |
604 | wm8994->ldo_ena_always_driven = pdata->ldo_ena_always_driven; | |
26c34c25 MB |
605 | |
606 | if (pdata->spkmode_pu) | |
607 | pulls |= WM8994_SPKMODE_PU; | |
9e501086 MB |
608 | } |
609 | ||
26c34c25 | 610 | /* Disable unneeded pulls */ |
881de670 | 611 | wm8994_set_bits(wm8994, WM8994_PULL_CONTROL_2, |
26c34c25 MB |
612 | WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD | |
613 | WM8994_SPKMODE_PU | WM8994_CSNADDR_PD, | |
614 | pulls); | |
881de670 | 615 | |
9e501086 MB |
616 | /* In some system designs where the regulators are not in use, |
617 | * we can achieve a small reduction in leakage currents by | |
618 | * floating LDO outputs. This bit makes no difference if the | |
619 | * LDOs are enabled, it only affects cases where the LDOs were | |
620 | * in operation and are then disabled. | |
621 | */ | |
622 | for (i = 0; i < WM8994_NUM_LDO_REGS; i++) { | |
623 | if (wm8994_ldo_in_use(pdata, i)) | |
624 | wm8994_set_bits(wm8994, WM8994_LDO_1 + i, | |
625 | WM8994_LDO1_DISCH, WM8994_LDO1_DISCH); | |
626 | else | |
627 | wm8994_set_bits(wm8994, WM8994_LDO_1 + i, | |
628 | WM8994_LDO1_DISCH, 0); | |
629 | } | |
630 | ||
c9fbf7e0 MB |
631 | wm8994_irq_init(wm8994); |
632 | ||
9e501086 MB |
633 | ret = mfd_add_devices(wm8994->dev, -1, |
634 | wm8994_devs, ARRAY_SIZE(wm8994_devs), | |
635 | NULL, 0); | |
636 | if (ret != 0) { | |
637 | dev_err(wm8994->dev, "Failed to add children: %d\n", ret); | |
c9fbf7e0 | 638 | goto err_irq; |
9e501086 MB |
639 | } |
640 | ||
d450f19e | 641 | pm_runtime_enable(wm8994->dev); |
ee67b0cd | 642 | pm_runtime_idle(wm8994->dev); |
d450f19e | 643 | |
9e501086 MB |
644 | return 0; |
645 | ||
c9fbf7e0 MB |
646 | err_irq: |
647 | wm8994_irq_exit(wm8994); | |
9e501086 | 648 | err_enable: |
559e0df6 | 649 | regulator_bulk_disable(wm8994->num_supplies, |
9e501086 MB |
650 | wm8994->supplies); |
651 | err_get: | |
559e0df6 | 652 | regulator_bulk_free(wm8994->num_supplies, wm8994->supplies); |
9db4249f | 653 | err: |
9e501086 | 654 | mfd_remove_devices(wm8994->dev); |
9e501086 MB |
655 | return ret; |
656 | } | |
657 | ||
abc0ccea | 658 | static __devexit void wm8994_device_exit(struct wm8994 *wm8994) |
9e501086 | 659 | { |
d450f19e | 660 | pm_runtime_disable(wm8994->dev); |
9e501086 | 661 | mfd_remove_devices(wm8994->dev); |
c9fbf7e0 | 662 | wm8994_irq_exit(wm8994); |
559e0df6 | 663 | regulator_bulk_disable(wm8994->num_supplies, |
9e501086 | 664 | wm8994->supplies); |
559e0df6 | 665 | regulator_bulk_free(wm8994->num_supplies, wm8994->supplies); |
9e501086 MB |
666 | } |
667 | ||
cf763c2e MB |
668 | static const struct of_device_id wm8994_of_match[] = { |
669 | { .compatible = "wlf,wm1811", }, | |
670 | { .compatible = "wlf,wm8994", }, | |
671 | { .compatible = "wlf,wm8958", }, | |
672 | { } | |
673 | }; | |
674 | MODULE_DEVICE_TABLE(of, wm8994_of_match); | |
675 | ||
027d6766 MB |
676 | static __devinit int wm8994_i2c_probe(struct i2c_client *i2c, |
677 | const struct i2c_device_id *id) | |
9e501086 MB |
678 | { |
679 | struct wm8994 *wm8994; | |
d6c645fc | 680 | int ret; |
9e501086 | 681 | |
2fa33494 | 682 | wm8994 = devm_kzalloc(&i2c->dev, sizeof(struct wm8994), GFP_KERNEL); |
d0a11693 | 683 | if (wm8994 == NULL) |
9e501086 | 684 | return -ENOMEM; |
9e501086 MB |
685 | |
686 | i2c_set_clientdata(i2c, wm8994); | |
687 | wm8994->dev = &i2c->dev; | |
c9fbf7e0 | 688 | wm8994->irq = i2c->irq; |
559e0df6 | 689 | wm8994->type = id->driver_data; |
9e501086 | 690 | |
9db4249f | 691 | wm8994->regmap = devm_regmap_init_i2c(i2c, &wm8994_base_regmap_config); |
d6c645fc MB |
692 | if (IS_ERR(wm8994->regmap)) { |
693 | ret = PTR_ERR(wm8994->regmap); | |
694 | dev_err(wm8994->dev, "Failed to allocate register map: %d\n", | |
695 | ret); | |
d6c645fc MB |
696 | return ret; |
697 | } | |
698 | ||
559e0df6 | 699 | return wm8994_device_init(wm8994, i2c->irq); |
9e501086 MB |
700 | } |
701 | ||
027d6766 | 702 | static __devexit int wm8994_i2c_remove(struct i2c_client *i2c) |
9e501086 MB |
703 | { |
704 | struct wm8994 *wm8994 = i2c_get_clientdata(i2c); | |
705 | ||
706 | wm8994_device_exit(wm8994); | |
707 | ||
708 | return 0; | |
709 | } | |
710 | ||
9e501086 | 711 | static const struct i2c_device_id wm8994_i2c_id[] = { |
b1f43bf3 | 712 | { "wm1811", WM1811 }, |
71d17184 | 713 | { "wm1811a", WM1811 }, |
559e0df6 MB |
714 | { "wm8994", WM8994 }, |
715 | { "wm8958", WM8958 }, | |
9e501086 MB |
716 | { } |
717 | }; | |
718 | MODULE_DEVICE_TABLE(i2c, wm8994_i2c_id); | |
719 | ||
aad34310 MB |
720 | static UNIVERSAL_DEV_PM_OPS(wm8994_pm_ops, wm8994_suspend, wm8994_resume, |
721 | NULL); | |
d450f19e | 722 | |
9e501086 MB |
723 | static struct i2c_driver wm8994_i2c_driver = { |
724 | .driver = { | |
d450f19e MB |
725 | .name = "wm8994", |
726 | .owner = THIS_MODULE, | |
727 | .pm = &wm8994_pm_ops, | |
cf763c2e | 728 | .of_match_table = wm8994_of_match, |
9e501086 MB |
729 | }, |
730 | .probe = wm8994_i2c_probe, | |
027d6766 | 731 | .remove = __devexit_p(wm8994_i2c_remove), |
9e501086 MB |
732 | .id_table = wm8994_i2c_id, |
733 | }; | |
734 | ||
735 | static int __init wm8994_i2c_init(void) | |
736 | { | |
737 | int ret; | |
738 | ||
739 | ret = i2c_add_driver(&wm8994_i2c_driver); | |
740 | if (ret != 0) | |
741 | pr_err("Failed to register wm8994 I2C driver: %d\n", ret); | |
742 | ||
743 | return ret; | |
744 | } | |
745 | module_init(wm8994_i2c_init); | |
746 | ||
747 | static void __exit wm8994_i2c_exit(void) | |
748 | { | |
749 | i2c_del_driver(&wm8994_i2c_driver); | |
750 | } | |
751 | module_exit(wm8994_i2c_exit); | |
752 | ||
753 | MODULE_DESCRIPTION("Core support for the WM8994 audio CODEC"); | |
754 | MODULE_LICENSE("GPL"); | |
755 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); |