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> | |
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 MB |
35 | |
36 | /** | |
37 | * wm8994_reg_read: Read a single WM8994 register. | |
38 | * | |
39 | * @wm8994: Device to read from. | |
40 | * @reg: Register to read. | |
41 | */ | |
42 | int wm8994_reg_read(struct wm8994 *wm8994, unsigned short reg) | |
43 | { | |
d6c645fc | 44 | unsigned int val; |
9e501086 MB |
45 | int ret; |
46 | ||
d6c645fc | 47 | ret = regmap_read(wm8994->regmap, reg, &val); |
9e501086 MB |
48 | |
49 | if (ret < 0) | |
50 | return ret; | |
51 | else | |
d6c645fc | 52 | return val; |
9e501086 MB |
53 | } |
54 | EXPORT_SYMBOL_GPL(wm8994_reg_read); | |
55 | ||
56 | /** | |
57 | * wm8994_bulk_read: Read multiple WM8994 registers | |
58 | * | |
59 | * @wm8994: Device to read from | |
60 | * @reg: First register | |
61 | * @count: Number of registers | |
316b6cc0 | 62 | * @buf: Buffer to fill. The data will be returned big endian. |
9e501086 MB |
63 | */ |
64 | int wm8994_bulk_read(struct wm8994 *wm8994, unsigned short reg, | |
65 | int count, u16 *buf) | |
66 | { | |
d6c645fc | 67 | return regmap_bulk_read(wm8994->regmap, reg, buf, count); |
9e501086 | 68 | } |
9e501086 | 69 | |
9e501086 MB |
70 | /** |
71 | * wm8994_reg_write: Write a single WM8994 register. | |
72 | * | |
73 | * @wm8994: Device to write to. | |
74 | * @reg: Register to write to. | |
75 | * @val: Value to write. | |
76 | */ | |
77 | int wm8994_reg_write(struct wm8994 *wm8994, unsigned short reg, | |
78 | unsigned short val) | |
79 | { | |
d6c645fc | 80 | return regmap_write(wm8994->regmap, reg, val); |
9e501086 MB |
81 | } |
82 | EXPORT_SYMBOL_GPL(wm8994_reg_write); | |
83 | ||
e93c5387 MB |
84 | /** |
85 | * wm8994_bulk_write: Write multiple WM8994 registers | |
86 | * | |
87 | * @wm8994: Device to write to | |
88 | * @reg: First register | |
89 | * @count: Number of registers | |
4277163c | 90 | * @buf: Buffer to write from. Data must be big-endian formatted. |
e93c5387 MB |
91 | */ |
92 | int wm8994_bulk_write(struct wm8994 *wm8994, unsigned short reg, | |
07e73fbb | 93 | int count, const u16 *buf) |
e93c5387 | 94 | { |
d6c645fc | 95 | return regmap_raw_write(wm8994->regmap, reg, buf, count * sizeof(u16)); |
e93c5387 MB |
96 | } |
97 | EXPORT_SYMBOL_GPL(wm8994_bulk_write); | |
98 | ||
9e501086 MB |
99 | /** |
100 | * wm8994_set_bits: Set the value of a bitfield in a WM8994 register | |
101 | * | |
102 | * @wm8994: Device to write to. | |
103 | * @reg: Register to write to. | |
104 | * @mask: Mask of bits to set. | |
105 | * @val: Value to set (unshifted) | |
106 | */ | |
107 | int wm8994_set_bits(struct wm8994 *wm8994, unsigned short reg, | |
108 | unsigned short mask, unsigned short val) | |
109 | { | |
d6c645fc | 110 | return regmap_update_bits(wm8994->regmap, reg, mask, val); |
9e501086 MB |
111 | } |
112 | EXPORT_SYMBOL_GPL(wm8994_set_bits); | |
113 | ||
114 | static struct mfd_cell wm8994_regulator_devs[] = { | |
d450f19e MB |
115 | { |
116 | .name = "wm8994-ldo", | |
117 | .id = 1, | |
118 | .pm_runtime_no_callbacks = true, | |
119 | }, | |
120 | { | |
121 | .name = "wm8994-ldo", | |
122 | .id = 2, | |
123 | .pm_runtime_no_callbacks = true, | |
124 | }, | |
9e501086 MB |
125 | }; |
126 | ||
c9fbf7e0 MB |
127 | static struct resource wm8994_codec_resources[] = { |
128 | { | |
129 | .start = WM8994_IRQ_TEMP_SHUT, | |
130 | .end = WM8994_IRQ_TEMP_WARN, | |
131 | .flags = IORESOURCE_IRQ, | |
132 | }, | |
133 | }; | |
134 | ||
135 | static struct resource wm8994_gpio_resources[] = { | |
136 | { | |
137 | .start = WM8994_IRQ_GPIO(1), | |
138 | .end = WM8994_IRQ_GPIO(11), | |
139 | .flags = IORESOURCE_IRQ, | |
140 | }, | |
141 | }; | |
142 | ||
9e501086 | 143 | static struct mfd_cell wm8994_devs[] = { |
c9fbf7e0 MB |
144 | { |
145 | .name = "wm8994-codec", | |
146 | .num_resources = ARRAY_SIZE(wm8994_codec_resources), | |
147 | .resources = wm8994_codec_resources, | |
148 | }, | |
149 | ||
150 | { | |
151 | .name = "wm8994-gpio", | |
152 | .num_resources = ARRAY_SIZE(wm8994_gpio_resources), | |
153 | .resources = wm8994_gpio_resources, | |
d450f19e | 154 | .pm_runtime_no_callbacks = true, |
c9fbf7e0 | 155 | }, |
9e501086 MB |
156 | }; |
157 | ||
158 | /* | |
159 | * Supplies for the main bulk of CODEC; the LDO supplies are ignored | |
160 | * and should be handled via the standard regulator API supply | |
161 | * management. | |
162 | */ | |
b1f43bf3 MB |
163 | static const char *wm1811_main_supplies[] = { |
164 | "DBVDD1", | |
165 | "DBVDD2", | |
166 | "DBVDD3", | |
167 | "DCVDD", | |
168 | "AVDD1", | |
169 | "AVDD2", | |
170 | "CPVDD", | |
171 | "SPKVDD1", | |
172 | "SPKVDD2", | |
173 | }; | |
174 | ||
9e501086 MB |
175 | static const char *wm8994_main_supplies[] = { |
176 | "DBVDD", | |
177 | "DCVDD", | |
178 | "AVDD1", | |
179 | "AVDD2", | |
180 | "CPVDD", | |
181 | "SPKVDD1", | |
182 | "SPKVDD2", | |
183 | }; | |
184 | ||
559e0df6 MB |
185 | static const char *wm8958_main_supplies[] = { |
186 | "DBVDD1", | |
187 | "DBVDD2", | |
188 | "DBVDD3", | |
189 | "DCVDD", | |
190 | "AVDD1", | |
191 | "AVDD2", | |
192 | "CPVDD", | |
193 | "SPKVDD1", | |
194 | "SPKVDD2", | |
195 | }; | |
196 | ||
6394678e | 197 | #ifdef CONFIG_PM_RUNTIME |
d450f19e | 198 | static int wm8994_suspend(struct device *dev) |
9e501086 MB |
199 | { |
200 | struct wm8994 *wm8994 = dev_get_drvdata(dev); | |
201 | int ret; | |
202 | ||
77bd70e9 | 203 | /* Don't actually go through with the suspend if the CODEC is |
ebe38f80 | 204 | * still active for accessory detect. */ |
5f40c6b6 MB |
205 | switch (wm8994->type) { |
206 | case WM8958: | |
b5488b6e | 207 | case WM1811: |
5f40c6b6 MB |
208 | ret = wm8994_reg_read(wm8994, WM8958_MIC_DETECT_1); |
209 | if (ret < 0) { | |
210 | dev_err(dev, "Failed to read power status: %d\n", ret); | |
211 | } else if (ret & WM8958_MICD_ENA) { | |
212 | dev_dbg(dev, "CODEC still active, ignoring suspend\n"); | |
213 | return 0; | |
214 | } | |
215 | break; | |
216 | default: | |
217 | break; | |
218 | } | |
219 | ||
881de670 MB |
220 | /* Disable LDO pulldowns while the device is suspended if we |
221 | * don't know that something will be driving them. */ | |
222 | if (!wm8994->ldo_ena_always_driven) | |
223 | wm8994_set_bits(wm8994, WM8994_PULL_CONTROL_2, | |
224 | WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD, | |
225 | WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD); | |
226 | ||
f40dff9e MB |
227 | /* Explicitly put the device into reset in case regulators |
228 | * don't get disabled in order to ensure consistent restart. | |
229 | */ | |
be79cf2f MB |
230 | wm8994_reg_write(wm8994, WM8994_SOFTWARE_RESET, |
231 | wm8994_reg_read(wm8994, WM8994_SOFTWARE_RESET)); | |
f40dff9e | 232 | |
ed393dcd MB |
233 | regcache_mark_dirty(wm8994->regmap); |
234 | ||
78a27cd3 CR |
235 | /* Restore GPIO registers to prevent problems with mismatched |
236 | * pin configurations. | |
237 | */ | |
ed393dcd MB |
238 | ret = regcache_sync_region(wm8994->regmap, WM8994_GPIO_1, |
239 | WM8994_GPIO_11); | |
78a27cd3 CR |
240 | if (ret != 0) |
241 | dev_err(dev, "Failed to restore GPIO registers: %d\n", ret); | |
242 | ||
1a2017b7 MB |
243 | /* In case one of the GPIOs is used as a wake input. */ |
244 | ret = regcache_sync_region(wm8994->regmap, | |
245 | WM8994_INTERRUPT_STATUS_1_MASK, | |
246 | WM8994_INTERRUPT_STATUS_1_MASK); | |
247 | if (ret != 0) | |
248 | dev_err(dev, "Failed to restore interrupt mask: %d\n", ret); | |
249 | ||
3befc925 | 250 | regcache_cache_only(wm8994->regmap, true); |
77bd70e9 MB |
251 | wm8994->suspended = true; |
252 | ||
559e0df6 | 253 | ret = regulator_bulk_disable(wm8994->num_supplies, |
9e501086 MB |
254 | wm8994->supplies); |
255 | if (ret != 0) { | |
256 | dev_err(dev, "Failed to disable supplies: %d\n", ret); | |
257 | return ret; | |
258 | } | |
259 | ||
260 | return 0; | |
261 | } | |
262 | ||
d450f19e | 263 | static int wm8994_resume(struct device *dev) |
9e501086 MB |
264 | { |
265 | struct wm8994 *wm8994 = dev_get_drvdata(dev); | |
c3f13861 | 266 | int ret; |
9e501086 | 267 | |
77bd70e9 MB |
268 | /* We may have lied to the PM core about suspending */ |
269 | if (!wm8994->suspended) | |
270 | return 0; | |
271 | ||
559e0df6 | 272 | ret = regulator_bulk_enable(wm8994->num_supplies, |
9e501086 MB |
273 | wm8994->supplies); |
274 | if (ret != 0) { | |
275 | dev_err(dev, "Failed to enable supplies: %d\n", ret); | |
276 | return ret; | |
277 | } | |
278 | ||
3befc925 | 279 | regcache_cache_only(wm8994->regmap, false); |
c3f13861 MB |
280 | ret = regcache_sync(wm8994->regmap); |
281 | if (ret != 0) { | |
282 | dev_err(dev, "Failed to restore register map: %d\n", ret); | |
283 | goto err_enable; | |
98ae1cca | 284 | } |
c9fbf7e0 | 285 | |
881de670 MB |
286 | /* Disable LDO pulldowns while the device is active */ |
287 | wm8994_set_bits(wm8994, WM8994_PULL_CONTROL_2, | |
288 | WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD, | |
289 | 0); | |
290 | ||
77bd70e9 MB |
291 | wm8994->suspended = false; |
292 | ||
9e501086 | 293 | return 0; |
c3f13861 MB |
294 | |
295 | err_enable: | |
296 | regulator_bulk_disable(wm8994->num_supplies, wm8994->supplies); | |
297 | ||
298 | return ret; | |
9e501086 MB |
299 | } |
300 | #endif | |
301 | ||
302 | #ifdef CONFIG_REGULATOR | |
303 | static int wm8994_ldo_in_use(struct wm8994_pdata *pdata, int ldo) | |
304 | { | |
305 | struct wm8994_ldo_pdata *ldo_pdata; | |
306 | ||
307 | if (!pdata) | |
308 | return 0; | |
309 | ||
310 | ldo_pdata = &pdata->ldo[ldo]; | |
311 | ||
312 | if (!ldo_pdata->init_data) | |
313 | return 0; | |
314 | ||
315 | return ldo_pdata->init_data->num_consumer_supplies != 0; | |
316 | } | |
317 | #else | |
318 | static int wm8994_ldo_in_use(struct wm8994_pdata *pdata, int ldo) | |
319 | { | |
320 | return 0; | |
321 | } | |
322 | #endif | |
323 | ||
a73e5df1 | 324 | static const struct reg_default wm8994_revc_patch[] = { |
462835e4 MB |
325 | { 0x102, 0x3 }, |
326 | { 0x56, 0x3 }, | |
327 | { 0x817, 0x0 }, | |
328 | { 0x102, 0x0 }, | |
329 | }; | |
330 | ||
a73e5df1 | 331 | static const struct reg_default wm8958_reva_patch[] = { |
462835e4 MB |
332 | { 0x102, 0x3 }, |
333 | { 0xcb, 0x81 }, | |
334 | { 0x817, 0x0 }, | |
335 | { 0x102, 0x0 }, | |
336 | }; | |
337 | ||
a73e5df1 | 338 | static const struct reg_default wm1811_reva_patch[] = { |
462835e4 | 339 | { 0x102, 0x3 }, |
9282a7b9 | 340 | { 0x56, 0xc07 }, |
462835e4 MB |
341 | { 0x5d, 0x7e }, |
342 | { 0x5e, 0x0 }, | |
343 | { 0x102, 0x0 }, | |
344 | }; | |
345 | ||
20fb2772 MB |
346 | #ifdef CONFIG_OF |
347 | static int wm8994_set_pdata_from_of(struct wm8994 *wm8994) | |
348 | { | |
349 | struct device_node *np = wm8994->dev->of_node; | |
350 | struct wm8994_pdata *pdata = &wm8994->pdata; | |
351 | int i; | |
352 | ||
353 | if (!np) | |
354 | return 0; | |
355 | ||
356 | if (of_property_read_u32_array(np, "wlf,gpio-cfg", pdata->gpio_defaults, | |
357 | ARRAY_SIZE(pdata->gpio_defaults)) >= 0) { | |
358 | for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) { | |
359 | if (wm8994->pdata.gpio_defaults[i] == 0) | |
360 | pdata->gpio_defaults[i] | |
361 | = WM8994_CONFIGURE_GPIO; | |
362 | } | |
363 | } | |
364 | ||
365 | of_property_read_u32_array(np, "wlf,micbias-cfg", pdata->micbias, | |
366 | ARRAY_SIZE(pdata->micbias)); | |
367 | ||
368 | pdata->lineout1_diff = true; | |
369 | pdata->lineout2_diff = true; | |
370 | if (of_find_property(np, "wlf,lineout1-se", NULL)) | |
371 | pdata->lineout1_diff = false; | |
372 | if (of_find_property(np, "wlf,lineout2-se", NULL)) | |
373 | pdata->lineout2_diff = false; | |
374 | ||
375 | if (of_find_property(np, "wlf,lineout1-feedback", NULL)) | |
376 | pdata->lineout1fb = true; | |
377 | if (of_find_property(np, "wlf,lineout2-feedback", NULL)) | |
378 | pdata->lineout2fb = true; | |
379 | ||
380 | if (of_find_property(np, "wlf,ldoena-always-driven", NULL)) | |
381 | pdata->lineout2fb = true; | |
382 | ||
383 | pdata->ldo[0].enable = of_get_named_gpio(np, "wlf,ldo1ena", 0); | |
384 | if (pdata->ldo[0].enable < 0) | |
385 | pdata->ldo[0].enable = 0; | |
386 | ||
387 | pdata->ldo[1].enable = of_get_named_gpio(np, "wlf,ldo2ena", 0); | |
388 | if (pdata->ldo[1].enable < 0) | |
389 | pdata->ldo[1].enable = 0; | |
390 | ||
391 | return 0; | |
392 | } | |
393 | #else | |
394 | static int wm8994_set_pdata_from_of(struct wm8994 *wm8994) | |
395 | { | |
396 | return 0; | |
397 | } | |
398 | #endif | |
399 | ||
9e501086 MB |
400 | /* |
401 | * Instantiate the generic non-control parts of the device. | |
402 | */ | |
f791be49 | 403 | static int wm8994_device_init(struct wm8994 *wm8994, int irq) |
9e501086 | 404 | { |
a8a8fc28 | 405 | struct wm8994_pdata *pdata; |
34697898 | 406 | struct regmap_config *regmap_config; |
462835e4 | 407 | const struct reg_default *regmap_patch = NULL; |
559e0df6 | 408 | const char *devname; |
222bc784 | 409 | int ret, i, patch_regs = 0; |
26c34c25 | 410 | int pulls = 0; |
9e501086 | 411 | |
a8a8fc28 MB |
412 | if (dev_get_platdata(wm8994->dev)) { |
413 | pdata = dev_get_platdata(wm8994->dev); | |
414 | wm8994->pdata = *pdata; | |
415 | } | |
416 | pdata = &wm8994->pdata; | |
417 | ||
20fb2772 MB |
418 | ret = wm8994_set_pdata_from_of(wm8994); |
419 | if (ret != 0) | |
420 | return ret; | |
421 | ||
9e501086 MB |
422 | dev_set_drvdata(wm8994->dev, wm8994); |
423 | ||
424 | /* Add the on-chip regulators first for bootstrapping */ | |
425 | ret = mfd_add_devices(wm8994->dev, -1, | |
426 | wm8994_regulator_devs, | |
427 | ARRAY_SIZE(wm8994_regulator_devs), | |
55692af5 | 428 | NULL, 0, NULL); |
9e501086 MB |
429 | if (ret != 0) { |
430 | dev_err(wm8994->dev, "Failed to add children: %d\n", ret); | |
9db4249f | 431 | goto err; |
9e501086 MB |
432 | } |
433 | ||
559e0df6 | 434 | switch (wm8994->type) { |
b1f43bf3 MB |
435 | case WM1811: |
436 | wm8994->num_supplies = ARRAY_SIZE(wm1811_main_supplies); | |
437 | break; | |
559e0df6 MB |
438 | case WM8994: |
439 | wm8994->num_supplies = ARRAY_SIZE(wm8994_main_supplies); | |
440 | break; | |
441 | case WM8958: | |
442 | wm8994->num_supplies = ARRAY_SIZE(wm8958_main_supplies); | |
443 | break; | |
444 | default: | |
445 | BUG(); | |
9db4249f | 446 | goto err; |
559e0df6 MB |
447 | } |
448 | ||
2fa33494 MB |
449 | wm8994->supplies = devm_kzalloc(wm8994->dev, |
450 | sizeof(struct regulator_bulk_data) * | |
451 | wm8994->num_supplies, GFP_KERNEL); | |
fccbd21f AL |
452 | if (!wm8994->supplies) { |
453 | ret = -ENOMEM; | |
9db4249f | 454 | goto err; |
fccbd21f | 455 | } |
9e501086 | 456 | |
559e0df6 | 457 | switch (wm8994->type) { |
b1f43bf3 MB |
458 | case WM1811: |
459 | for (i = 0; i < ARRAY_SIZE(wm1811_main_supplies); i++) | |
460 | wm8994->supplies[i].supply = wm1811_main_supplies[i]; | |
461 | break; | |
559e0df6 MB |
462 | case WM8994: |
463 | for (i = 0; i < ARRAY_SIZE(wm8994_main_supplies); i++) | |
464 | wm8994->supplies[i].supply = wm8994_main_supplies[i]; | |
465 | break; | |
466 | case WM8958: | |
467 | for (i = 0; i < ARRAY_SIZE(wm8958_main_supplies); i++) | |
468 | wm8994->supplies[i].supply = wm8958_main_supplies[i]; | |
469 | break; | |
470 | default: | |
471 | BUG(); | |
9db4249f | 472 | goto err; |
559e0df6 MB |
473 | } |
474 | ||
f1c68e4d | 475 | ret = devm_regulator_bulk_get(wm8994->dev, wm8994->num_supplies, |
9e501086 MB |
476 | wm8994->supplies); |
477 | if (ret != 0) { | |
478 | dev_err(wm8994->dev, "Failed to get supplies: %d\n", ret); | |
9db4249f | 479 | goto err; |
9e501086 MB |
480 | } |
481 | ||
559e0df6 | 482 | ret = regulator_bulk_enable(wm8994->num_supplies, |
9e501086 MB |
483 | wm8994->supplies); |
484 | if (ret != 0) { | |
485 | dev_err(wm8994->dev, "Failed to enable supplies: %d\n", ret); | |
f1c68e4d | 486 | goto err; |
9e501086 MB |
487 | } |
488 | ||
489 | ret = wm8994_reg_read(wm8994, WM8994_SOFTWARE_RESET); | |
490 | if (ret < 0) { | |
491 | dev_err(wm8994->dev, "Failed to read ID register\n"); | |
492 | goto err_enable; | |
493 | } | |
559e0df6 | 494 | switch (ret) { |
b1f43bf3 MB |
495 | case 0x1811: |
496 | devname = "WM1811"; | |
497 | if (wm8994->type != WM1811) | |
498 | dev_warn(wm8994->dev, "Device registered as type %d\n", | |
499 | wm8994->type); | |
500 | wm8994->type = WM1811; | |
501 | break; | |
559e0df6 MB |
502 | case 0x8994: |
503 | devname = "WM8994"; | |
504 | if (wm8994->type != WM8994) | |
505 | dev_warn(wm8994->dev, "Device registered as type %d\n", | |
506 | wm8994->type); | |
507 | wm8994->type = WM8994; | |
508 | break; | |
509 | case 0x8958: | |
510 | devname = "WM8958"; | |
511 | if (wm8994->type != WM8958) | |
512 | dev_warn(wm8994->dev, "Device registered as type %d\n", | |
513 | wm8994->type); | |
514 | wm8994->type = WM8958; | |
515 | break; | |
516 | default: | |
9e501086 MB |
517 | dev_err(wm8994->dev, "Device is not a WM8994, ID is %x\n", |
518 | ret); | |
519 | ret = -EINVAL; | |
520 | goto err_enable; | |
521 | } | |
522 | ||
523 | ret = wm8994_reg_read(wm8994, WM8994_CHIP_REVISION); | |
524 | if (ret < 0) { | |
525 | dev_err(wm8994->dev, "Failed to read revision register: %d\n", | |
526 | ret); | |
527 | goto err_enable; | |
528 | } | |
cc7a7279 MB |
529 | wm8994->revision = ret & WM8994_CHIP_REV_MASK; |
530 | wm8994->cust_id = (ret & WM8994_CUST_ID_MASK) >> WM8994_CUST_ID_SHIFT; | |
9e501086 | 531 | |
a2495bc7 MB |
532 | switch (wm8994->type) { |
533 | case WM8994: | |
7ed5849c | 534 | switch (wm8994->revision) { |
a2495bc7 MB |
535 | case 0: |
536 | case 1: | |
559e0df6 MB |
537 | dev_warn(wm8994->dev, |
538 | "revision %c not fully supported\n", | |
7ed5849c | 539 | 'A' + wm8994->revision); |
a2495bc7 | 540 | break; |
462835e4 MB |
541 | case 2: |
542 | case 3: | |
d54e17f9 | 543 | default: |
462835e4 MB |
544 | regmap_patch = wm8994_revc_patch; |
545 | patch_regs = ARRAY_SIZE(wm8994_revc_patch); | |
546 | break; | |
462835e4 MB |
547 | } |
548 | break; | |
549 | ||
550 | case WM8958: | |
551 | switch (wm8994->revision) { | |
552 | case 0: | |
553 | regmap_patch = wm8958_reva_patch; | |
554 | patch_regs = ARRAY_SIZE(wm8958_reva_patch); | |
555 | break; | |
a2495bc7 MB |
556 | default: |
557 | break; | |
558 | } | |
9e501086 | 559 | break; |
462835e4 | 560 | |
443e67ed MB |
561 | case WM1811: |
562 | /* Revision C did not change the relevant layer */ | |
7ed5849c MB |
563 | if (wm8994->revision > 1) |
564 | wm8994->revision++; | |
d54e17f9 MB |
565 | |
566 | regmap_patch = wm1811_reva_patch; | |
567 | patch_regs = ARRAY_SIZE(wm1811_reva_patch); | |
443e67ed | 568 | break; |
462835e4 | 569 | |
9e501086 | 570 | default: |
9e501086 MB |
571 | break; |
572 | } | |
573 | ||
cc7a7279 MB |
574 | dev_info(wm8994->dev, "%s revision %c CUST_ID %02x\n", devname, |
575 | 'A' + wm8994->revision, wm8994->cust_id); | |
9e501086 | 576 | |
34697898 MB |
577 | switch (wm8994->type) { |
578 | case WM1811: | |
579 | regmap_config = &wm1811_regmap_config; | |
580 | break; | |
581 | case WM8994: | |
582 | regmap_config = &wm8994_regmap_config; | |
583 | break; | |
584 | case WM8958: | |
585 | regmap_config = &wm8958_regmap_config; | |
586 | break; | |
587 | default: | |
588 | dev_err(wm8994->dev, "Unknown device type %d\n", wm8994->type); | |
589 | return -EINVAL; | |
590 | } | |
591 | ||
592 | ret = regmap_reinit_cache(wm8994->regmap, regmap_config); | |
593 | if (ret != 0) { | |
594 | dev_err(wm8994->dev, "Failed to reinit register cache: %d\n", | |
595 | ret); | |
596 | return ret; | |
597 | } | |
9e501086 | 598 | |
f3799e93 MB |
599 | /* Explicitly put the device into reset in case regulators |
600 | * don't get disabled in order to ensure we know the device | |
601 | * state. | |
602 | */ | |
603 | ret = wm8994_reg_write(wm8994, WM8994_SOFTWARE_RESET, | |
604 | wm8994_reg_read(wm8994, WM8994_SOFTWARE_RESET)); | |
605 | if (ret != 0) { | |
606 | dev_err(wm8994->dev, "Failed to reset device: %d\n", ret); | |
607 | return ret; | |
608 | } | |
609 | ||
462835e4 MB |
610 | if (regmap_patch) { |
611 | ret = regmap_register_patch(wm8994->regmap, regmap_patch, | |
612 | patch_regs); | |
613 | if (ret != 0) { | |
614 | dev_err(wm8994->dev, "Failed to register patch: %d\n", | |
615 | ret); | |
9db4249f | 616 | goto err; |
462835e4 MB |
617 | } |
618 | } | |
619 | ||
a8a8fc28 MB |
620 | wm8994->irq_base = pdata->irq_base; |
621 | wm8994->gpio_base = pdata->gpio_base; | |
622 | ||
623 | /* GPIO configuration is only applied if it's non-zero */ | |
624 | for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) { | |
625 | if (pdata->gpio_defaults[i]) { | |
626 | wm8994_set_bits(wm8994, WM8994_GPIO_1 + i, | |
627 | 0xffff, pdata->gpio_defaults[i]); | |
9e501086 | 628 | } |
a8a8fc28 | 629 | } |
881de670 | 630 | |
a8a8fc28 | 631 | wm8994->ldo_ena_always_driven = pdata->ldo_ena_always_driven; |
26c34c25 | 632 | |
a8a8fc28 MB |
633 | if (pdata->spkmode_pu) |
634 | pulls |= WM8994_SPKMODE_PU; | |
9e501086 | 635 | |
26c34c25 | 636 | /* Disable unneeded pulls */ |
881de670 | 637 | wm8994_set_bits(wm8994, WM8994_PULL_CONTROL_2, |
26c34c25 MB |
638 | WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD | |
639 | WM8994_SPKMODE_PU | WM8994_CSNADDR_PD, | |
640 | pulls); | |
881de670 | 641 | |
9e501086 MB |
642 | /* In some system designs where the regulators are not in use, |
643 | * we can achieve a small reduction in leakage currents by | |
644 | * floating LDO outputs. This bit makes no difference if the | |
645 | * LDOs are enabled, it only affects cases where the LDOs were | |
646 | * in operation and are then disabled. | |
647 | */ | |
648 | for (i = 0; i < WM8994_NUM_LDO_REGS; i++) { | |
649 | if (wm8994_ldo_in_use(pdata, i)) | |
650 | wm8994_set_bits(wm8994, WM8994_LDO_1 + i, | |
651 | WM8994_LDO1_DISCH, WM8994_LDO1_DISCH); | |
652 | else | |
653 | wm8994_set_bits(wm8994, WM8994_LDO_1 + i, | |
654 | WM8994_LDO1_DISCH, 0); | |
655 | } | |
656 | ||
c9fbf7e0 MB |
657 | wm8994_irq_init(wm8994); |
658 | ||
9e501086 MB |
659 | ret = mfd_add_devices(wm8994->dev, -1, |
660 | wm8994_devs, ARRAY_SIZE(wm8994_devs), | |
55692af5 | 661 | NULL, 0, NULL); |
9e501086 MB |
662 | if (ret != 0) { |
663 | dev_err(wm8994->dev, "Failed to add children: %d\n", ret); | |
c9fbf7e0 | 664 | goto err_irq; |
9e501086 MB |
665 | } |
666 | ||
d450f19e | 667 | pm_runtime_enable(wm8994->dev); |
ee67b0cd | 668 | pm_runtime_idle(wm8994->dev); |
d450f19e | 669 | |
9e501086 MB |
670 | return 0; |
671 | ||
c9fbf7e0 MB |
672 | err_irq: |
673 | wm8994_irq_exit(wm8994); | |
9e501086 | 674 | err_enable: |
559e0df6 | 675 | regulator_bulk_disable(wm8994->num_supplies, |
9e501086 | 676 | wm8994->supplies); |
9db4249f | 677 | err: |
9e501086 | 678 | mfd_remove_devices(wm8994->dev); |
9e501086 MB |
679 | return ret; |
680 | } | |
681 | ||
4740f73f | 682 | static void wm8994_device_exit(struct wm8994 *wm8994) |
9e501086 | 683 | { |
d450f19e | 684 | pm_runtime_disable(wm8994->dev); |
9e501086 | 685 | mfd_remove_devices(wm8994->dev); |
c9fbf7e0 | 686 | wm8994_irq_exit(wm8994); |
559e0df6 | 687 | regulator_bulk_disable(wm8994->num_supplies, |
9e501086 | 688 | wm8994->supplies); |
9e501086 MB |
689 | } |
690 | ||
cf763c2e | 691 | static const struct of_device_id wm8994_of_match[] = { |
39aa3b5a MB |
692 | { .compatible = "wlf,wm1811", .data = (void *)WM1811 }, |
693 | { .compatible = "wlf,wm8994", .data = (void *)WM8994 }, | |
694 | { .compatible = "wlf,wm8958", .data = (void *)WM8958 }, | |
cf763c2e MB |
695 | { } |
696 | }; | |
697 | MODULE_DEVICE_TABLE(of, wm8994_of_match); | |
698 | ||
f791be49 | 699 | static int wm8994_i2c_probe(struct i2c_client *i2c, |
027d6766 | 700 | const struct i2c_device_id *id) |
9e501086 | 701 | { |
20fb2772 | 702 | const struct of_device_id *of_id; |
9e501086 | 703 | struct wm8994 *wm8994; |
d6c645fc | 704 | int ret; |
9e501086 | 705 | |
2fa33494 | 706 | wm8994 = devm_kzalloc(&i2c->dev, sizeof(struct wm8994), GFP_KERNEL); |
d0a11693 | 707 | if (wm8994 == NULL) |
9e501086 | 708 | return -ENOMEM; |
9e501086 MB |
709 | |
710 | i2c_set_clientdata(i2c, wm8994); | |
711 | wm8994->dev = &i2c->dev; | |
c9fbf7e0 | 712 | wm8994->irq = i2c->irq; |
20fb2772 MB |
713 | |
714 | if (i2c->dev.of_node) { | |
715 | of_id = of_match_device(wm8994_of_match, &i2c->dev); | |
716 | if (of_id) | |
717 | wm8994->type = (int)of_id->data; | |
718 | } else { | |
719 | wm8994->type = id->driver_data; | |
720 | } | |
9e501086 | 721 | |
9db4249f | 722 | wm8994->regmap = devm_regmap_init_i2c(i2c, &wm8994_base_regmap_config); |
d6c645fc MB |
723 | if (IS_ERR(wm8994->regmap)) { |
724 | ret = PTR_ERR(wm8994->regmap); | |
725 | dev_err(wm8994->dev, "Failed to allocate register map: %d\n", | |
726 | ret); | |
d6c645fc MB |
727 | return ret; |
728 | } | |
729 | ||
559e0df6 | 730 | return wm8994_device_init(wm8994, i2c->irq); |
9e501086 MB |
731 | } |
732 | ||
4740f73f | 733 | static int wm8994_i2c_remove(struct i2c_client *i2c) |
9e501086 MB |
734 | { |
735 | struct wm8994 *wm8994 = i2c_get_clientdata(i2c); | |
736 | ||
737 | wm8994_device_exit(wm8994); | |
738 | ||
739 | return 0; | |
740 | } | |
741 | ||
9e501086 | 742 | static const struct i2c_device_id wm8994_i2c_id[] = { |
b1f43bf3 | 743 | { "wm1811", WM1811 }, |
71d17184 | 744 | { "wm1811a", WM1811 }, |
559e0df6 MB |
745 | { "wm8994", WM8994 }, |
746 | { "wm8958", WM8958 }, | |
9e501086 MB |
747 | { } |
748 | }; | |
749 | MODULE_DEVICE_TABLE(i2c, wm8994_i2c_id); | |
750 | ||
6394678e MB |
751 | static const struct dev_pm_ops wm8994_pm_ops = { |
752 | SET_RUNTIME_PM_OPS(wm8994_suspend, wm8994_resume, NULL) | |
753 | }; | |
d450f19e | 754 | |
9e501086 MB |
755 | static struct i2c_driver wm8994_i2c_driver = { |
756 | .driver = { | |
d450f19e MB |
757 | .name = "wm8994", |
758 | .owner = THIS_MODULE, | |
759 | .pm = &wm8994_pm_ops, | |
20fb2772 | 760 | .of_match_table = of_match_ptr(wm8994_of_match), |
9e501086 MB |
761 | }, |
762 | .probe = wm8994_i2c_probe, | |
84449216 | 763 | .remove = wm8994_i2c_remove, |
9e501086 MB |
764 | .id_table = wm8994_i2c_id, |
765 | }; | |
766 | ||
ceb57d27 | 767 | module_i2c_driver(wm8994_i2c_driver); |
9e501086 MB |
768 | |
769 | MODULE_DESCRIPTION("Core support for the WM8994 audio CODEC"); | |
770 | MODULE_LICENSE("GPL"); | |
771 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); |