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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 | |
ed393dcd MB |
286 | regcache_mark_dirty(wm8994->regmap); |
287 | ||
78a27cd3 CR |
288 | /* Restore GPIO registers to prevent problems with mismatched |
289 | * pin configurations. | |
290 | */ | |
ed393dcd MB |
291 | ret = regcache_sync_region(wm8994->regmap, WM8994_GPIO_1, |
292 | WM8994_GPIO_11); | |
78a27cd3 CR |
293 | if (ret != 0) |
294 | dev_err(dev, "Failed to restore GPIO registers: %d\n", ret); | |
295 | ||
1a2017b7 MB |
296 | /* In case one of the GPIOs is used as a wake input. */ |
297 | ret = regcache_sync_region(wm8994->regmap, | |
298 | WM8994_INTERRUPT_STATUS_1_MASK, | |
299 | WM8994_INTERRUPT_STATUS_1_MASK); | |
300 | if (ret != 0) | |
301 | dev_err(dev, "Failed to restore interrupt mask: %d\n", ret); | |
302 | ||
3befc925 | 303 | regcache_cache_only(wm8994->regmap, true); |
77bd70e9 MB |
304 | wm8994->suspended = true; |
305 | ||
559e0df6 | 306 | ret = regulator_bulk_disable(wm8994->num_supplies, |
9e501086 MB |
307 | wm8994->supplies); |
308 | if (ret != 0) { | |
309 | dev_err(dev, "Failed to disable supplies: %d\n", ret); | |
310 | return ret; | |
311 | } | |
312 | ||
313 | return 0; | |
314 | } | |
315 | ||
d450f19e | 316 | static int wm8994_resume(struct device *dev) |
9e501086 MB |
317 | { |
318 | struct wm8994 *wm8994 = dev_get_drvdata(dev); | |
c3f13861 | 319 | int ret; |
9e501086 | 320 | |
77bd70e9 MB |
321 | /* We may have lied to the PM core about suspending */ |
322 | if (!wm8994->suspended) | |
323 | return 0; | |
324 | ||
559e0df6 | 325 | ret = regulator_bulk_enable(wm8994->num_supplies, |
9e501086 MB |
326 | wm8994->supplies); |
327 | if (ret != 0) { | |
328 | dev_err(dev, "Failed to enable supplies: %d\n", ret); | |
329 | return ret; | |
330 | } | |
331 | ||
3befc925 | 332 | regcache_cache_only(wm8994->regmap, false); |
c3f13861 MB |
333 | ret = regcache_sync(wm8994->regmap); |
334 | if (ret != 0) { | |
335 | dev_err(dev, "Failed to restore register map: %d\n", ret); | |
336 | goto err_enable; | |
98ae1cca | 337 | } |
c9fbf7e0 | 338 | |
881de670 MB |
339 | /* Disable LDO pulldowns while the device is active */ |
340 | wm8994_set_bits(wm8994, WM8994_PULL_CONTROL_2, | |
341 | WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD, | |
342 | 0); | |
343 | ||
77bd70e9 MB |
344 | wm8994->suspended = false; |
345 | ||
9e501086 | 346 | return 0; |
c3f13861 MB |
347 | |
348 | err_enable: | |
349 | regulator_bulk_disable(wm8994->num_supplies, wm8994->supplies); | |
350 | ||
351 | return ret; | |
9e501086 MB |
352 | } |
353 | #endif | |
354 | ||
355 | #ifdef CONFIG_REGULATOR | |
356 | static int wm8994_ldo_in_use(struct wm8994_pdata *pdata, int ldo) | |
357 | { | |
358 | struct wm8994_ldo_pdata *ldo_pdata; | |
359 | ||
360 | if (!pdata) | |
361 | return 0; | |
362 | ||
363 | ldo_pdata = &pdata->ldo[ldo]; | |
364 | ||
365 | if (!ldo_pdata->init_data) | |
366 | return 0; | |
367 | ||
368 | return ldo_pdata->init_data->num_consumer_supplies != 0; | |
369 | } | |
370 | #else | |
371 | static int wm8994_ldo_in_use(struct wm8994_pdata *pdata, int ldo) | |
372 | { | |
373 | return 0; | |
374 | } | |
375 | #endif | |
376 | ||
a73e5df1 | 377 | static const struct reg_default wm8994_revc_patch[] = { |
462835e4 MB |
378 | { 0x102, 0x3 }, |
379 | { 0x56, 0x3 }, | |
380 | { 0x817, 0x0 }, | |
381 | { 0x102, 0x0 }, | |
382 | }; | |
383 | ||
a73e5df1 | 384 | static const struct reg_default wm8958_reva_patch[] = { |
462835e4 MB |
385 | { 0x102, 0x3 }, |
386 | { 0xcb, 0x81 }, | |
387 | { 0x817, 0x0 }, | |
388 | { 0x102, 0x0 }, | |
389 | }; | |
390 | ||
a73e5df1 | 391 | static const struct reg_default wm1811_reva_patch[] = { |
462835e4 | 392 | { 0x102, 0x3 }, |
9282a7b9 | 393 | { 0x56, 0xc07 }, |
462835e4 MB |
394 | { 0x5d, 0x7e }, |
395 | { 0x5e, 0x0 }, | |
396 | { 0x102, 0x0 }, | |
397 | }; | |
398 | ||
9e501086 MB |
399 | /* |
400 | * Instantiate the generic non-control parts of the device. | |
401 | */ | |
f791be49 | 402 | static int wm8994_device_init(struct wm8994 *wm8994, int irq) |
9e501086 | 403 | { |
a8a8fc28 | 404 | struct wm8994_pdata *pdata; |
34697898 | 405 | struct regmap_config *regmap_config; |
462835e4 | 406 | const struct reg_default *regmap_patch = NULL; |
559e0df6 | 407 | const char *devname; |
462835e4 | 408 | int ret, i, patch_regs; |
26c34c25 | 409 | int pulls = 0; |
9e501086 | 410 | |
a8a8fc28 MB |
411 | if (dev_get_platdata(wm8994->dev)) { |
412 | pdata = dev_get_platdata(wm8994->dev); | |
413 | wm8994->pdata = *pdata; | |
414 | } | |
415 | pdata = &wm8994->pdata; | |
416 | ||
9e501086 MB |
417 | dev_set_drvdata(wm8994->dev, wm8994); |
418 | ||
419 | /* Add the on-chip regulators first for bootstrapping */ | |
420 | ret = mfd_add_devices(wm8994->dev, -1, | |
421 | wm8994_regulator_devs, | |
422 | ARRAY_SIZE(wm8994_regulator_devs), | |
55692af5 | 423 | NULL, 0, NULL); |
9e501086 MB |
424 | if (ret != 0) { |
425 | dev_err(wm8994->dev, "Failed to add children: %d\n", ret); | |
9db4249f | 426 | goto err; |
9e501086 MB |
427 | } |
428 | ||
559e0df6 | 429 | switch (wm8994->type) { |
b1f43bf3 MB |
430 | case WM1811: |
431 | wm8994->num_supplies = ARRAY_SIZE(wm1811_main_supplies); | |
432 | break; | |
559e0df6 MB |
433 | case WM8994: |
434 | wm8994->num_supplies = ARRAY_SIZE(wm8994_main_supplies); | |
435 | break; | |
436 | case WM8958: | |
437 | wm8994->num_supplies = ARRAY_SIZE(wm8958_main_supplies); | |
438 | break; | |
439 | default: | |
440 | BUG(); | |
9db4249f | 441 | goto err; |
559e0df6 MB |
442 | } |
443 | ||
2fa33494 MB |
444 | wm8994->supplies = devm_kzalloc(wm8994->dev, |
445 | sizeof(struct regulator_bulk_data) * | |
446 | wm8994->num_supplies, GFP_KERNEL); | |
fccbd21f AL |
447 | if (!wm8994->supplies) { |
448 | ret = -ENOMEM; | |
9db4249f | 449 | goto err; |
fccbd21f | 450 | } |
9e501086 | 451 | |
559e0df6 | 452 | switch (wm8994->type) { |
b1f43bf3 MB |
453 | case WM1811: |
454 | for (i = 0; i < ARRAY_SIZE(wm1811_main_supplies); i++) | |
455 | wm8994->supplies[i].supply = wm1811_main_supplies[i]; | |
456 | break; | |
559e0df6 MB |
457 | case WM8994: |
458 | for (i = 0; i < ARRAY_SIZE(wm8994_main_supplies); i++) | |
459 | wm8994->supplies[i].supply = wm8994_main_supplies[i]; | |
460 | break; | |
461 | case WM8958: | |
462 | for (i = 0; i < ARRAY_SIZE(wm8958_main_supplies); i++) | |
463 | wm8994->supplies[i].supply = wm8958_main_supplies[i]; | |
464 | break; | |
465 | default: | |
466 | BUG(); | |
9db4249f | 467 | goto err; |
559e0df6 MB |
468 | } |
469 | ||
470 | ret = regulator_bulk_get(wm8994->dev, wm8994->num_supplies, | |
9e501086 MB |
471 | wm8994->supplies); |
472 | if (ret != 0) { | |
473 | dev_err(wm8994->dev, "Failed to get supplies: %d\n", ret); | |
9db4249f | 474 | goto err; |
9e501086 MB |
475 | } |
476 | ||
559e0df6 | 477 | ret = regulator_bulk_enable(wm8994->num_supplies, |
9e501086 MB |
478 | wm8994->supplies); |
479 | if (ret != 0) { | |
480 | dev_err(wm8994->dev, "Failed to enable supplies: %d\n", ret); | |
7731074a | 481 | goto err_get; |
9e501086 MB |
482 | } |
483 | ||
484 | ret = wm8994_reg_read(wm8994, WM8994_SOFTWARE_RESET); | |
485 | if (ret < 0) { | |
486 | dev_err(wm8994->dev, "Failed to read ID register\n"); | |
487 | goto err_enable; | |
488 | } | |
559e0df6 | 489 | switch (ret) { |
b1f43bf3 MB |
490 | case 0x1811: |
491 | devname = "WM1811"; | |
492 | if (wm8994->type != WM1811) | |
493 | dev_warn(wm8994->dev, "Device registered as type %d\n", | |
494 | wm8994->type); | |
495 | wm8994->type = WM1811; | |
496 | break; | |
559e0df6 MB |
497 | case 0x8994: |
498 | devname = "WM8994"; | |
499 | if (wm8994->type != WM8994) | |
500 | dev_warn(wm8994->dev, "Device registered as type %d\n", | |
501 | wm8994->type); | |
502 | wm8994->type = WM8994; | |
503 | break; | |
504 | case 0x8958: | |
505 | devname = "WM8958"; | |
506 | if (wm8994->type != WM8958) | |
507 | dev_warn(wm8994->dev, "Device registered as type %d\n", | |
508 | wm8994->type); | |
509 | wm8994->type = WM8958; | |
510 | break; | |
511 | default: | |
9e501086 MB |
512 | dev_err(wm8994->dev, "Device is not a WM8994, ID is %x\n", |
513 | ret); | |
514 | ret = -EINVAL; | |
515 | goto err_enable; | |
516 | } | |
517 | ||
518 | ret = wm8994_reg_read(wm8994, WM8994_CHIP_REVISION); | |
519 | if (ret < 0) { | |
520 | dev_err(wm8994->dev, "Failed to read revision register: %d\n", | |
521 | ret); | |
522 | goto err_enable; | |
523 | } | |
cc7a7279 MB |
524 | wm8994->revision = ret & WM8994_CHIP_REV_MASK; |
525 | wm8994->cust_id = (ret & WM8994_CUST_ID_MASK) >> WM8994_CUST_ID_SHIFT; | |
9e501086 | 526 | |
a2495bc7 MB |
527 | switch (wm8994->type) { |
528 | case WM8994: | |
7ed5849c | 529 | switch (wm8994->revision) { |
a2495bc7 MB |
530 | case 0: |
531 | case 1: | |
559e0df6 MB |
532 | dev_warn(wm8994->dev, |
533 | "revision %c not fully supported\n", | |
7ed5849c | 534 | 'A' + wm8994->revision); |
a2495bc7 | 535 | break; |
462835e4 MB |
536 | case 2: |
537 | case 3: | |
d54e17f9 | 538 | default: |
462835e4 MB |
539 | regmap_patch = wm8994_revc_patch; |
540 | patch_regs = ARRAY_SIZE(wm8994_revc_patch); | |
541 | break; | |
462835e4 MB |
542 | } |
543 | break; | |
544 | ||
545 | case WM8958: | |
546 | switch (wm8994->revision) { | |
547 | case 0: | |
548 | regmap_patch = wm8958_reva_patch; | |
549 | patch_regs = ARRAY_SIZE(wm8958_reva_patch); | |
550 | break; | |
a2495bc7 MB |
551 | default: |
552 | break; | |
553 | } | |
9e501086 | 554 | break; |
462835e4 | 555 | |
443e67ed MB |
556 | case WM1811: |
557 | /* Revision C did not change the relevant layer */ | |
7ed5849c MB |
558 | if (wm8994->revision > 1) |
559 | wm8994->revision++; | |
d54e17f9 MB |
560 | |
561 | regmap_patch = wm1811_reva_patch; | |
562 | patch_regs = ARRAY_SIZE(wm1811_reva_patch); | |
443e67ed | 563 | break; |
462835e4 | 564 | |
9e501086 | 565 | default: |
9e501086 MB |
566 | break; |
567 | } | |
568 | ||
cc7a7279 MB |
569 | dev_info(wm8994->dev, "%s revision %c CUST_ID %02x\n", devname, |
570 | 'A' + wm8994->revision, wm8994->cust_id); | |
9e501086 | 571 | |
34697898 MB |
572 | switch (wm8994->type) { |
573 | case WM1811: | |
574 | regmap_config = &wm1811_regmap_config; | |
575 | break; | |
576 | case WM8994: | |
577 | regmap_config = &wm8994_regmap_config; | |
578 | break; | |
579 | case WM8958: | |
580 | regmap_config = &wm8958_regmap_config; | |
581 | break; | |
582 | default: | |
583 | dev_err(wm8994->dev, "Unknown device type %d\n", wm8994->type); | |
584 | return -EINVAL; | |
585 | } | |
586 | ||
587 | ret = regmap_reinit_cache(wm8994->regmap, regmap_config); | |
588 | if (ret != 0) { | |
589 | dev_err(wm8994->dev, "Failed to reinit register cache: %d\n", | |
590 | ret); | |
591 | return ret; | |
592 | } | |
9e501086 | 593 | |
462835e4 MB |
594 | if (regmap_patch) { |
595 | ret = regmap_register_patch(wm8994->regmap, regmap_patch, | |
596 | patch_regs); | |
597 | if (ret != 0) { | |
598 | dev_err(wm8994->dev, "Failed to register patch: %d\n", | |
599 | ret); | |
9db4249f | 600 | goto err; |
462835e4 MB |
601 | } |
602 | } | |
603 | ||
a8a8fc28 MB |
604 | wm8994->irq_base = pdata->irq_base; |
605 | wm8994->gpio_base = pdata->gpio_base; | |
606 | ||
607 | /* GPIO configuration is only applied if it's non-zero */ | |
608 | for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) { | |
609 | if (pdata->gpio_defaults[i]) { | |
610 | wm8994_set_bits(wm8994, WM8994_GPIO_1 + i, | |
611 | 0xffff, pdata->gpio_defaults[i]); | |
9e501086 | 612 | } |
a8a8fc28 | 613 | } |
881de670 | 614 | |
a8a8fc28 | 615 | wm8994->ldo_ena_always_driven = pdata->ldo_ena_always_driven; |
26c34c25 | 616 | |
a8a8fc28 MB |
617 | if (pdata->spkmode_pu) |
618 | pulls |= WM8994_SPKMODE_PU; | |
9e501086 | 619 | |
26c34c25 | 620 | /* Disable unneeded pulls */ |
881de670 | 621 | wm8994_set_bits(wm8994, WM8994_PULL_CONTROL_2, |
26c34c25 MB |
622 | WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD | |
623 | WM8994_SPKMODE_PU | WM8994_CSNADDR_PD, | |
624 | pulls); | |
881de670 | 625 | |
9e501086 MB |
626 | /* In some system designs where the regulators are not in use, |
627 | * we can achieve a small reduction in leakage currents by | |
628 | * floating LDO outputs. This bit makes no difference if the | |
629 | * LDOs are enabled, it only affects cases where the LDOs were | |
630 | * in operation and are then disabled. | |
631 | */ | |
632 | for (i = 0; i < WM8994_NUM_LDO_REGS; i++) { | |
633 | if (wm8994_ldo_in_use(pdata, i)) | |
634 | wm8994_set_bits(wm8994, WM8994_LDO_1 + i, | |
635 | WM8994_LDO1_DISCH, WM8994_LDO1_DISCH); | |
636 | else | |
637 | wm8994_set_bits(wm8994, WM8994_LDO_1 + i, | |
638 | WM8994_LDO1_DISCH, 0); | |
639 | } | |
640 | ||
c9fbf7e0 MB |
641 | wm8994_irq_init(wm8994); |
642 | ||
9e501086 MB |
643 | ret = mfd_add_devices(wm8994->dev, -1, |
644 | wm8994_devs, ARRAY_SIZE(wm8994_devs), | |
55692af5 | 645 | NULL, 0, NULL); |
9e501086 MB |
646 | if (ret != 0) { |
647 | dev_err(wm8994->dev, "Failed to add children: %d\n", ret); | |
c9fbf7e0 | 648 | goto err_irq; |
9e501086 MB |
649 | } |
650 | ||
d450f19e | 651 | pm_runtime_enable(wm8994->dev); |
ee67b0cd | 652 | pm_runtime_idle(wm8994->dev); |
d450f19e | 653 | |
9e501086 MB |
654 | return 0; |
655 | ||
c9fbf7e0 MB |
656 | err_irq: |
657 | wm8994_irq_exit(wm8994); | |
9e501086 | 658 | err_enable: |
559e0df6 | 659 | regulator_bulk_disable(wm8994->num_supplies, |
9e501086 MB |
660 | wm8994->supplies); |
661 | err_get: | |
559e0df6 | 662 | regulator_bulk_free(wm8994->num_supplies, wm8994->supplies); |
9db4249f | 663 | err: |
9e501086 | 664 | mfd_remove_devices(wm8994->dev); |
9e501086 MB |
665 | return ret; |
666 | } | |
667 | ||
4740f73f | 668 | static void wm8994_device_exit(struct wm8994 *wm8994) |
9e501086 | 669 | { |
d450f19e | 670 | pm_runtime_disable(wm8994->dev); |
9e501086 | 671 | mfd_remove_devices(wm8994->dev); |
c9fbf7e0 | 672 | wm8994_irq_exit(wm8994); |
559e0df6 | 673 | regulator_bulk_disable(wm8994->num_supplies, |
9e501086 | 674 | wm8994->supplies); |
559e0df6 | 675 | regulator_bulk_free(wm8994->num_supplies, wm8994->supplies); |
9e501086 MB |
676 | } |
677 | ||
cf763c2e MB |
678 | static const struct of_device_id wm8994_of_match[] = { |
679 | { .compatible = "wlf,wm1811", }, | |
680 | { .compatible = "wlf,wm8994", }, | |
681 | { .compatible = "wlf,wm8958", }, | |
682 | { } | |
683 | }; | |
684 | MODULE_DEVICE_TABLE(of, wm8994_of_match); | |
685 | ||
f791be49 | 686 | static int wm8994_i2c_probe(struct i2c_client *i2c, |
027d6766 | 687 | const struct i2c_device_id *id) |
9e501086 MB |
688 | { |
689 | struct wm8994 *wm8994; | |
d6c645fc | 690 | int ret; |
9e501086 | 691 | |
2fa33494 | 692 | wm8994 = devm_kzalloc(&i2c->dev, sizeof(struct wm8994), GFP_KERNEL); |
d0a11693 | 693 | if (wm8994 == NULL) |
9e501086 | 694 | return -ENOMEM; |
9e501086 MB |
695 | |
696 | i2c_set_clientdata(i2c, wm8994); | |
697 | wm8994->dev = &i2c->dev; | |
c9fbf7e0 | 698 | wm8994->irq = i2c->irq; |
559e0df6 | 699 | wm8994->type = id->driver_data; |
9e501086 | 700 | |
9db4249f | 701 | wm8994->regmap = devm_regmap_init_i2c(i2c, &wm8994_base_regmap_config); |
d6c645fc MB |
702 | if (IS_ERR(wm8994->regmap)) { |
703 | ret = PTR_ERR(wm8994->regmap); | |
704 | dev_err(wm8994->dev, "Failed to allocate register map: %d\n", | |
705 | ret); | |
d6c645fc MB |
706 | return ret; |
707 | } | |
708 | ||
559e0df6 | 709 | return wm8994_device_init(wm8994, i2c->irq); |
9e501086 MB |
710 | } |
711 | ||
4740f73f | 712 | static int wm8994_i2c_remove(struct i2c_client *i2c) |
9e501086 MB |
713 | { |
714 | struct wm8994 *wm8994 = i2c_get_clientdata(i2c); | |
715 | ||
716 | wm8994_device_exit(wm8994); | |
717 | ||
718 | return 0; | |
719 | } | |
720 | ||
9e501086 | 721 | static const struct i2c_device_id wm8994_i2c_id[] = { |
b1f43bf3 | 722 | { "wm1811", WM1811 }, |
71d17184 | 723 | { "wm1811a", WM1811 }, |
559e0df6 MB |
724 | { "wm8994", WM8994 }, |
725 | { "wm8958", WM8958 }, | |
9e501086 MB |
726 | { } |
727 | }; | |
728 | MODULE_DEVICE_TABLE(i2c, wm8994_i2c_id); | |
729 | ||
aad34310 MB |
730 | static UNIVERSAL_DEV_PM_OPS(wm8994_pm_ops, wm8994_suspend, wm8994_resume, |
731 | NULL); | |
d450f19e | 732 | |
9e501086 MB |
733 | static struct i2c_driver wm8994_i2c_driver = { |
734 | .driver = { | |
d450f19e MB |
735 | .name = "wm8994", |
736 | .owner = THIS_MODULE, | |
737 | .pm = &wm8994_pm_ops, | |
cf763c2e | 738 | .of_match_table = wm8994_of_match, |
9e501086 MB |
739 | }, |
740 | .probe = wm8994_i2c_probe, | |
84449216 | 741 | .remove = wm8994_i2c_remove, |
9e501086 MB |
742 | .id_table = wm8994_i2c_id, |
743 | }; | |
744 | ||
ceb57d27 | 745 | module_i2c_driver(wm8994_i2c_driver); |
9e501086 MB |
746 | |
747 | MODULE_DESCRIPTION("Core support for the WM8994 audio CODEC"); | |
748 | MODULE_LICENSE("GPL"); | |
749 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); |