Commit | Line | Data |
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89b4012b MB |
1 | /* |
2 | * wm8350-core.c -- Device access for Wolfson WM8350 | |
3 | * | |
4 | * Copyright 2007, 2008 Wolfson Microelectronics PLC. | |
5 | * | |
6 | * Author: Liam Girdwood, Mark Brown | |
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> | |
17 | #include <linux/init.h> | |
ebccec0f | 18 | #include <linux/bug.h> |
89b4012b MB |
19 | #include <linux/device.h> |
20 | #include <linux/delay.h> | |
21 | #include <linux/interrupt.h> | |
ebccec0f | 22 | #include <linux/workqueue.h> |
89b4012b MB |
23 | |
24 | #include <linux/mfd/wm8350/core.h> | |
25 | #include <linux/mfd/wm8350/audio.h> | |
ebccec0f | 26 | #include <linux/mfd/wm8350/comparator.h> |
89b4012b MB |
27 | #include <linux/mfd/wm8350/gpio.h> |
28 | #include <linux/mfd/wm8350/pmic.h> | |
ebccec0f | 29 | #include <linux/mfd/wm8350/rtc.h> |
89b4012b | 30 | #include <linux/mfd/wm8350/supply.h> |
ebccec0f | 31 | #include <linux/mfd/wm8350/wdt.h> |
89b4012b MB |
32 | |
33 | #define WM8350_UNLOCK_KEY 0x0013 | |
34 | #define WM8350_LOCK_KEY 0x0000 | |
35 | ||
36 | #define WM8350_CLOCK_CONTROL_1 0x28 | |
37 | #define WM8350_AIF_TEST 0x74 | |
38 | ||
39 | /* debug */ | |
40 | #define WM8350_BUS_DEBUG 0 | |
41 | #if WM8350_BUS_DEBUG | |
42 | #define dump(regs, src) do { \ | |
43 | int i_; \ | |
44 | u16 *src_ = src; \ | |
45 | printk(KERN_DEBUG); \ | |
46 | for (i_ = 0; i_ < regs; i_++) \ | |
47 | printk(" 0x%4.4x", *src_++); \ | |
48 | printk("\n"); \ | |
49 | } while (0); | |
50 | #else | |
51 | #define dump(bytes, src) | |
52 | #endif | |
53 | ||
54 | #define WM8350_LOCK_DEBUG 0 | |
55 | #if WM8350_LOCK_DEBUG | |
56 | #define ldbg(format, arg...) printk(format, ## arg) | |
57 | #else | |
58 | #define ldbg(format, arg...) | |
59 | #endif | |
60 | ||
61 | /* | |
62 | * WM8350 Device IO | |
63 | */ | |
64 | static DEFINE_MUTEX(io_mutex); | |
65 | static DEFINE_MUTEX(reg_lock_mutex); | |
89b4012b MB |
66 | |
67 | /* Perform a physical read from the device. | |
68 | */ | |
69 | static int wm8350_phys_read(struct wm8350 *wm8350, u8 reg, int num_regs, | |
70 | u16 *dest) | |
71 | { | |
72 | int i, ret; | |
73 | int bytes = num_regs * 2; | |
74 | ||
75 | dev_dbg(wm8350->dev, "volatile read\n"); | |
76 | ret = wm8350->read_dev(wm8350, reg, bytes, (char *)dest); | |
77 | ||
78 | for (i = reg; i < reg + num_regs; i++) { | |
79 | /* Cache is CPU endian */ | |
80 | dest[i - reg] = be16_to_cpu(dest[i - reg]); | |
81 | ||
89b4012b MB |
82 | /* Mask out non-readable bits */ |
83 | dest[i - reg] &= wm8350_reg_io_map[i].readable; | |
84 | } | |
85 | ||
86 | dump(num_regs, dest); | |
87 | ||
88 | return ret; | |
89 | } | |
90 | ||
91 | static int wm8350_read(struct wm8350 *wm8350, u8 reg, int num_regs, u16 *dest) | |
92 | { | |
93 | int i; | |
94 | int end = reg + num_regs; | |
95 | int ret = 0; | |
96 | int bytes = num_regs * 2; | |
97 | ||
98 | if (wm8350->read_dev == NULL) | |
99 | return -ENODEV; | |
100 | ||
101 | if ((reg + num_regs - 1) > WM8350_MAX_REGISTER) { | |
102 | dev_err(wm8350->dev, "invalid reg %x\n", | |
103 | reg + num_regs - 1); | |
104 | return -EINVAL; | |
105 | } | |
106 | ||
107 | dev_dbg(wm8350->dev, | |
108 | "%s R%d(0x%2.2x) %d regs\n", __func__, reg, reg, num_regs); | |
109 | ||
110 | #if WM8350_BUS_DEBUG | |
111 | /* we can _safely_ read any register, but warn if read not supported */ | |
112 | for (i = reg; i < end; i++) { | |
113 | if (!wm8350_reg_io_map[i].readable) | |
114 | dev_warn(wm8350->dev, | |
115 | "reg R%d is not readable\n", i); | |
116 | } | |
117 | #endif | |
118 | ||
119 | /* if any volatile registers are required, then read back all */ | |
120 | for (i = reg; i < end; i++) | |
121 | if (wm8350_reg_io_map[i].vol) | |
122 | return wm8350_phys_read(wm8350, reg, num_regs, dest); | |
123 | ||
124 | /* no volatiles, then cache is good */ | |
125 | dev_dbg(wm8350->dev, "cache read\n"); | |
126 | memcpy(dest, &wm8350->reg_cache[reg], bytes); | |
127 | dump(num_regs, dest); | |
128 | return ret; | |
129 | } | |
130 | ||
131 | static inline int is_reg_locked(struct wm8350 *wm8350, u8 reg) | |
132 | { | |
133 | if (reg == WM8350_SECURITY || | |
134 | wm8350->reg_cache[WM8350_SECURITY] == WM8350_UNLOCK_KEY) | |
135 | return 0; | |
136 | ||
137 | if ((reg == WM8350_GPIO_CONFIGURATION_I_O) || | |
138 | (reg >= WM8350_GPIO_FUNCTION_SELECT_1 && | |
139 | reg <= WM8350_GPIO_FUNCTION_SELECT_4) || | |
140 | (reg >= WM8350_BATTERY_CHARGER_CONTROL_1 && | |
141 | reg <= WM8350_BATTERY_CHARGER_CONTROL_3)) | |
142 | return 1; | |
143 | return 0; | |
144 | } | |
145 | ||
146 | static int wm8350_write(struct wm8350 *wm8350, u8 reg, int num_regs, u16 *src) | |
147 | { | |
148 | int i; | |
149 | int end = reg + num_regs; | |
150 | int bytes = num_regs * 2; | |
151 | ||
152 | if (wm8350->write_dev == NULL) | |
153 | return -ENODEV; | |
154 | ||
155 | if ((reg + num_regs - 1) > WM8350_MAX_REGISTER) { | |
156 | dev_err(wm8350->dev, "invalid reg %x\n", | |
157 | reg + num_regs - 1); | |
158 | return -EINVAL; | |
159 | } | |
160 | ||
161 | /* it's generally not a good idea to write to RO or locked registers */ | |
162 | for (i = reg; i < end; i++) { | |
163 | if (!wm8350_reg_io_map[i].writable) { | |
164 | dev_err(wm8350->dev, | |
165 | "attempted write to read only reg R%d\n", i); | |
166 | return -EINVAL; | |
167 | } | |
168 | ||
169 | if (is_reg_locked(wm8350, i)) { | |
170 | dev_err(wm8350->dev, | |
171 | "attempted write to locked reg R%d\n", i); | |
172 | return -EINVAL; | |
173 | } | |
174 | ||
175 | src[i - reg] &= wm8350_reg_io_map[i].writable; | |
176 | ||
177 | wm8350->reg_cache[i] = | |
178 | (wm8350->reg_cache[i] & ~wm8350_reg_io_map[i].writable) | |
179 | | src[i - reg]; | |
180 | ||
181 | src[i - reg] = cpu_to_be16(src[i - reg]); | |
182 | } | |
183 | ||
184 | /* Actually write it out */ | |
185 | return wm8350->write_dev(wm8350, reg, bytes, (char *)src); | |
186 | } | |
187 | ||
188 | /* | |
189 | * Safe read, modify, write methods | |
190 | */ | |
191 | int wm8350_clear_bits(struct wm8350 *wm8350, u16 reg, u16 mask) | |
192 | { | |
193 | u16 data; | |
194 | int err; | |
195 | ||
196 | mutex_lock(&io_mutex); | |
197 | err = wm8350_read(wm8350, reg, 1, &data); | |
198 | if (err) { | |
199 | dev_err(wm8350->dev, "read from reg R%d failed\n", reg); | |
200 | goto out; | |
201 | } | |
202 | ||
203 | data &= ~mask; | |
204 | err = wm8350_write(wm8350, reg, 1, &data); | |
205 | if (err) | |
206 | dev_err(wm8350->dev, "write to reg R%d failed\n", reg); | |
207 | out: | |
208 | mutex_unlock(&io_mutex); | |
209 | return err; | |
210 | } | |
211 | EXPORT_SYMBOL_GPL(wm8350_clear_bits); | |
212 | ||
213 | int wm8350_set_bits(struct wm8350 *wm8350, u16 reg, u16 mask) | |
214 | { | |
215 | u16 data; | |
216 | int err; | |
217 | ||
218 | mutex_lock(&io_mutex); | |
219 | err = wm8350_read(wm8350, reg, 1, &data); | |
220 | if (err) { | |
221 | dev_err(wm8350->dev, "read from reg R%d failed\n", reg); | |
222 | goto out; | |
223 | } | |
224 | ||
225 | data |= mask; | |
226 | err = wm8350_write(wm8350, reg, 1, &data); | |
227 | if (err) | |
228 | dev_err(wm8350->dev, "write to reg R%d failed\n", reg); | |
229 | out: | |
230 | mutex_unlock(&io_mutex); | |
231 | return err; | |
232 | } | |
233 | EXPORT_SYMBOL_GPL(wm8350_set_bits); | |
234 | ||
235 | u16 wm8350_reg_read(struct wm8350 *wm8350, int reg) | |
236 | { | |
237 | u16 data; | |
238 | int err; | |
239 | ||
240 | mutex_lock(&io_mutex); | |
241 | err = wm8350_read(wm8350, reg, 1, &data); | |
242 | if (err) | |
243 | dev_err(wm8350->dev, "read from reg R%d failed\n", reg); | |
244 | ||
245 | mutex_unlock(&io_mutex); | |
246 | return data; | |
247 | } | |
248 | EXPORT_SYMBOL_GPL(wm8350_reg_read); | |
249 | ||
250 | int wm8350_reg_write(struct wm8350 *wm8350, int reg, u16 val) | |
251 | { | |
252 | int ret; | |
253 | u16 data = val; | |
254 | ||
255 | mutex_lock(&io_mutex); | |
256 | ret = wm8350_write(wm8350, reg, 1, &data); | |
257 | if (ret) | |
258 | dev_err(wm8350->dev, "write to reg R%d failed\n", reg); | |
259 | mutex_unlock(&io_mutex); | |
260 | return ret; | |
261 | } | |
262 | EXPORT_SYMBOL_GPL(wm8350_reg_write); | |
263 | ||
264 | int wm8350_block_read(struct wm8350 *wm8350, int start_reg, int regs, | |
265 | u16 *dest) | |
266 | { | |
267 | int err = 0; | |
268 | ||
269 | mutex_lock(&io_mutex); | |
270 | err = wm8350_read(wm8350, start_reg, regs, dest); | |
271 | if (err) | |
272 | dev_err(wm8350->dev, "block read starting from R%d failed\n", | |
273 | start_reg); | |
274 | mutex_unlock(&io_mutex); | |
275 | return err; | |
276 | } | |
277 | EXPORT_SYMBOL_GPL(wm8350_block_read); | |
278 | ||
279 | int wm8350_block_write(struct wm8350 *wm8350, int start_reg, int regs, | |
280 | u16 *src) | |
281 | { | |
282 | int ret = 0; | |
283 | ||
284 | mutex_lock(&io_mutex); | |
285 | ret = wm8350_write(wm8350, start_reg, regs, src); | |
286 | if (ret) | |
287 | dev_err(wm8350->dev, "block write starting at R%d failed\n", | |
288 | start_reg); | |
289 | mutex_unlock(&io_mutex); | |
290 | return ret; | |
291 | } | |
292 | EXPORT_SYMBOL_GPL(wm8350_block_write); | |
293 | ||
858e6744 MB |
294 | /** |
295 | * wm8350_reg_lock() | |
296 | * | |
297 | * The WM8350 has a hardware lock which can be used to prevent writes to | |
298 | * some registers (generally those which can cause particularly serious | |
299 | * problems if misused). This function enables that lock. | |
300 | */ | |
89b4012b MB |
301 | int wm8350_reg_lock(struct wm8350 *wm8350) |
302 | { | |
303 | u16 key = WM8350_LOCK_KEY; | |
304 | int ret; | |
305 | ||
306 | ldbg(__func__); | |
307 | mutex_lock(&io_mutex); | |
308 | ret = wm8350_write(wm8350, WM8350_SECURITY, 1, &key); | |
309 | if (ret) | |
310 | dev_err(wm8350->dev, "lock failed\n"); | |
311 | mutex_unlock(&io_mutex); | |
312 | return ret; | |
313 | } | |
314 | EXPORT_SYMBOL_GPL(wm8350_reg_lock); | |
315 | ||
858e6744 MB |
316 | /** |
317 | * wm8350_reg_unlock() | |
318 | * | |
319 | * The WM8350 has a hardware lock which can be used to prevent writes to | |
320 | * some registers (generally those which can cause particularly serious | |
321 | * problems if misused). This function disables that lock so updates | |
322 | * can be performed. For maximum safety this should be done only when | |
323 | * required. | |
324 | */ | |
89b4012b MB |
325 | int wm8350_reg_unlock(struct wm8350 *wm8350) |
326 | { | |
327 | u16 key = WM8350_UNLOCK_KEY; | |
328 | int ret; | |
329 | ||
330 | ldbg(__func__); | |
331 | mutex_lock(&io_mutex); | |
332 | ret = wm8350_write(wm8350, WM8350_SECURITY, 1, &key); | |
333 | if (ret) | |
334 | dev_err(wm8350->dev, "unlock failed\n"); | |
335 | mutex_unlock(&io_mutex); | |
336 | return ret; | |
337 | } | |
338 | EXPORT_SYMBOL_GPL(wm8350_reg_unlock); | |
339 | ||
67488526 MB |
340 | int wm8350_read_auxadc(struct wm8350 *wm8350, int channel, int scale, int vref) |
341 | { | |
342 | u16 reg, result = 0; | |
343 | int tries = 5; | |
344 | ||
345 | if (channel < WM8350_AUXADC_AUX1 || channel > WM8350_AUXADC_TEMP) | |
346 | return -EINVAL; | |
347 | if (channel >= WM8350_AUXADC_USB && channel <= WM8350_AUXADC_TEMP | |
348 | && (scale != 0 || vref != 0)) | |
349 | return -EINVAL; | |
350 | ||
351 | mutex_lock(&wm8350->auxadc_mutex); | |
352 | ||
353 | /* Turn on the ADC */ | |
354 | reg = wm8350_reg_read(wm8350, WM8350_POWER_MGMT_5); | |
355 | wm8350_reg_write(wm8350, WM8350_POWER_MGMT_5, reg | WM8350_AUXADC_ENA); | |
356 | ||
357 | if (scale || vref) { | |
358 | reg = scale << 13; | |
359 | reg |= vref << 12; | |
360 | wm8350_reg_write(wm8350, WM8350_AUX1_READBACK + channel, reg); | |
361 | } | |
362 | ||
363 | reg = wm8350_reg_read(wm8350, WM8350_DIGITISER_CONTROL_1); | |
364 | reg |= 1 << channel | WM8350_AUXADC_POLL; | |
365 | wm8350_reg_write(wm8350, WM8350_DIGITISER_CONTROL_1, reg); | |
366 | ||
367 | do { | |
368 | schedule_timeout_interruptible(1); | |
369 | reg = wm8350_reg_read(wm8350, WM8350_DIGITISER_CONTROL_1); | |
f3df0b75 | 370 | } while ((reg & WM8350_AUXADC_POLL) && --tries); |
67488526 MB |
371 | |
372 | if (!tries) | |
373 | dev_err(wm8350->dev, "adc chn %d read timeout\n", channel); | |
374 | else | |
375 | result = wm8350_reg_read(wm8350, | |
376 | WM8350_AUX1_READBACK + channel); | |
377 | ||
378 | /* Turn off the ADC */ | |
379 | reg = wm8350_reg_read(wm8350, WM8350_POWER_MGMT_5); | |
380 | wm8350_reg_write(wm8350, WM8350_POWER_MGMT_5, | |
381 | reg & ~WM8350_AUXADC_ENA); | |
382 | ||
383 | mutex_unlock(&wm8350->auxadc_mutex); | |
384 | ||
385 | return result & WM8350_AUXADC_DATA1_MASK; | |
386 | } | |
387 | EXPORT_SYMBOL_GPL(wm8350_read_auxadc); | |
388 | ||
89b4012b MB |
389 | /* |
390 | * Cache is always host endian. | |
391 | */ | |
96920630 | 392 | static int wm8350_create_cache(struct wm8350 *wm8350, int type, int mode) |
89b4012b MB |
393 | { |
394 | int i, ret = 0; | |
395 | u16 value; | |
396 | const u16 *reg_map; | |
397 | ||
96920630 | 398 | switch (type) { |
89b4012b | 399 | case 0: |
96920630 MB |
400 | switch (mode) { |
401 | #ifdef CONFIG_MFD_WM8350_CONFIG_MODE_0 | |
402 | case 0: | |
403 | reg_map = wm8350_mode0_defaults; | |
404 | break; | |
89b4012b MB |
405 | #endif |
406 | #ifdef CONFIG_MFD_WM8350_CONFIG_MODE_1 | |
96920630 MB |
407 | case 1: |
408 | reg_map = wm8350_mode1_defaults; | |
409 | break; | |
89b4012b MB |
410 | #endif |
411 | #ifdef CONFIG_MFD_WM8350_CONFIG_MODE_2 | |
96920630 MB |
412 | case 2: |
413 | reg_map = wm8350_mode2_defaults; | |
414 | break; | |
89b4012b MB |
415 | #endif |
416 | #ifdef CONFIG_MFD_WM8350_CONFIG_MODE_3 | |
96920630 MB |
417 | case 3: |
418 | reg_map = wm8350_mode3_defaults; | |
419 | break; | |
89b4012b | 420 | #endif |
96920630 MB |
421 | default: |
422 | dev_err(wm8350->dev, | |
423 | "WM8350 configuration mode %d not supported\n", | |
424 | mode); | |
425 | return -EINVAL; | |
426 | } | |
4331bb32 | 427 | break; |
96920630 | 428 | |
ca23f8c1 MB |
429 | case 1: |
430 | switch (mode) { | |
431 | #ifdef CONFIG_MFD_WM8351_CONFIG_MODE_0 | |
432 | case 0: | |
433 | reg_map = wm8351_mode0_defaults; | |
434 | break; | |
435 | #endif | |
436 | #ifdef CONFIG_MFD_WM8351_CONFIG_MODE_1 | |
437 | case 1: | |
438 | reg_map = wm8351_mode1_defaults; | |
439 | break; | |
440 | #endif | |
441 | #ifdef CONFIG_MFD_WM8351_CONFIG_MODE_2 | |
442 | case 2: | |
443 | reg_map = wm8351_mode2_defaults; | |
444 | break; | |
445 | #endif | |
446 | #ifdef CONFIG_MFD_WM8351_CONFIG_MODE_3 | |
447 | case 3: | |
448 | reg_map = wm8351_mode3_defaults; | |
449 | break; | |
450 | #endif | |
451 | default: | |
452 | dev_err(wm8350->dev, | |
453 | "WM8351 configuration mode %d not supported\n", | |
454 | mode); | |
455 | return -EINVAL; | |
456 | } | |
457 | break; | |
458 | ||
96920630 MB |
459 | case 2: |
460 | switch (mode) { | |
461 | #ifdef CONFIG_MFD_WM8352_CONFIG_MODE_0 | |
462 | case 0: | |
463 | reg_map = wm8352_mode0_defaults; | |
464 | break; | |
465 | #endif | |
466 | #ifdef CONFIG_MFD_WM8352_CONFIG_MODE_1 | |
467 | case 1: | |
468 | reg_map = wm8352_mode1_defaults; | |
469 | break; | |
470 | #endif | |
471 | #ifdef CONFIG_MFD_WM8352_CONFIG_MODE_2 | |
472 | case 2: | |
473 | reg_map = wm8352_mode2_defaults; | |
474 | break; | |
475 | #endif | |
476 | #ifdef CONFIG_MFD_WM8352_CONFIG_MODE_3 | |
477 | case 3: | |
478 | reg_map = wm8352_mode3_defaults; | |
479 | break; | |
480 | #endif | |
481 | default: | |
482 | dev_err(wm8350->dev, | |
483 | "WM8352 configuration mode %d not supported\n", | |
484 | mode); | |
485 | return -EINVAL; | |
486 | } | |
487 | break; | |
488 | ||
89b4012b | 489 | default: |
96920630 MB |
490 | dev_err(wm8350->dev, |
491 | "WM835x configuration mode %d not supported\n", | |
89b4012b MB |
492 | mode); |
493 | return -EINVAL; | |
494 | } | |
495 | ||
496 | wm8350->reg_cache = | |
9dfd3381 | 497 | kmalloc(sizeof(u16) * (WM8350_MAX_REGISTER + 1), GFP_KERNEL); |
89b4012b MB |
498 | if (wm8350->reg_cache == NULL) |
499 | return -ENOMEM; | |
500 | ||
501 | /* Read the initial cache state back from the device - this is | |
502 | * a PMIC so the device many not be in a virgin state and we | |
503 | * can't rely on the silicon values. | |
504 | */ | |
9dfd3381 MB |
505 | ret = wm8350->read_dev(wm8350, 0, |
506 | sizeof(u16) * (WM8350_MAX_REGISTER + 1), | |
507 | wm8350->reg_cache); | |
508 | if (ret < 0) { | |
509 | dev_err(wm8350->dev, | |
510 | "failed to read initial cache values\n"); | |
511 | goto out; | |
512 | } | |
513 | ||
514 | /* Mask out uncacheable/unreadable bits and the audio. */ | |
89b4012b | 515 | for (i = 0; i < WM8350_MAX_REGISTER; i++) { |
89b4012b MB |
516 | if (wm8350_reg_io_map[i].readable && |
517 | (i < WM8350_CLOCK_CONTROL_1 || i > WM8350_AIF_TEST)) { | |
9dfd3381 | 518 | value = be16_to_cpu(wm8350->reg_cache[i]); |
89b4012b MB |
519 | value &= wm8350_reg_io_map[i].readable; |
520 | wm8350->reg_cache[i] = value; | |
521 | } else | |
522 | wm8350->reg_cache[i] = reg_map[i]; | |
523 | } | |
524 | ||
525 | out: | |
526 | return ret; | |
527 | } | |
89b4012b | 528 | |
9201d38b MB |
529 | /* |
530 | * Register a client device. This is non-fatal since there is no need to | |
531 | * fail the entire device init due to a single platform device failing. | |
532 | */ | |
533 | static void wm8350_client_dev_register(struct wm8350 *wm8350, | |
534 | const char *name, | |
535 | struct platform_device **pdev) | |
536 | { | |
537 | int ret; | |
538 | ||
539 | *pdev = platform_device_alloc(name, -1); | |
540 | if (pdev == NULL) { | |
541 | dev_err(wm8350->dev, "Failed to allocate %s\n", name); | |
542 | return; | |
543 | } | |
544 | ||
545 | (*pdev)->dev.parent = wm8350->dev; | |
546 | platform_set_drvdata(*pdev, wm8350); | |
547 | ret = platform_device_add(*pdev); | |
548 | if (ret != 0) { | |
549 | dev_err(wm8350->dev, "Failed to register %s: %d\n", name, ret); | |
550 | platform_device_put(*pdev); | |
551 | *pdev = NULL; | |
552 | } | |
553 | } | |
554 | ||
ebccec0f | 555 | int wm8350_device_init(struct wm8350 *wm8350, int irq, |
bcdd4efc | 556 | struct wm8350_platform_data *pdata) |
89b4012b | 557 | { |
85c93ea7 | 558 | int ret; |
b797a555 MB |
559 | u16 id1, id2, mask_rev; |
560 | u16 cust_id, mode, chip_rev; | |
89b4012b MB |
561 | |
562 | /* get WM8350 revision and config mode */ | |
85c93ea7 MB |
563 | ret = wm8350->read_dev(wm8350, WM8350_RESET_ID, sizeof(id1), &id1); |
564 | if (ret != 0) { | |
565 | dev_err(wm8350->dev, "Failed to read ID: %d\n", ret); | |
566 | goto err; | |
567 | } | |
568 | ||
569 | ret = wm8350->read_dev(wm8350, WM8350_ID, sizeof(id2), &id2); | |
570 | if (ret != 0) { | |
571 | dev_err(wm8350->dev, "Failed to read ID: %d\n", ret); | |
572 | goto err; | |
573 | } | |
574 | ||
575 | ret = wm8350->read_dev(wm8350, WM8350_REVISION, sizeof(mask_rev), | |
576 | &mask_rev); | |
577 | if (ret != 0) { | |
578 | dev_err(wm8350->dev, "Failed to read revision: %d\n", ret); | |
579 | goto err; | |
580 | } | |
89b4012b MB |
581 | |
582 | id1 = be16_to_cpu(id1); | |
583 | id2 = be16_to_cpu(id2); | |
b797a555 | 584 | mask_rev = be16_to_cpu(mask_rev); |
89b4012b | 585 | |
b797a555 MB |
586 | if (id1 != 0x6143) { |
587 | dev_err(wm8350->dev, | |
588 | "Device with ID %x is not a WM8350\n", id1); | |
589 | ret = -ENODEV; | |
590 | goto err; | |
591 | } | |
592 | ||
593 | mode = id2 & WM8350_CONF_STS_MASK >> 10; | |
594 | cust_id = id2 & WM8350_CUST_ID_MASK; | |
595 | chip_rev = (id2 & WM8350_CHIP_REV_MASK) >> 12; | |
596 | dev_info(wm8350->dev, | |
597 | "CONF_STS %d, CUST_ID %d, MASK_REV %d, CHIP_REV %d\n", | |
598 | mode, cust_id, mask_rev, chip_rev); | |
599 | ||
600 | if (cust_id != 0) { | |
601 | dev_err(wm8350->dev, "Unsupported CUST_ID\n"); | |
602 | ret = -ENODEV; | |
603 | goto err; | |
604 | } | |
605 | ||
606 | switch (mask_rev) { | |
607 | case 0: | |
645524a9 MB |
608 | wm8350->pmic.max_dcdc = WM8350_DCDC_6; |
609 | wm8350->pmic.max_isink = WM8350_ISINK_B; | |
610 | ||
b797a555 | 611 | switch (chip_rev) { |
89b4012b | 612 | case WM8350_REV_E: |
b797a555 | 613 | dev_info(wm8350->dev, "WM8350 Rev E\n"); |
89b4012b MB |
614 | break; |
615 | case WM8350_REV_F: | |
b797a555 | 616 | dev_info(wm8350->dev, "WM8350 Rev F\n"); |
89b4012b MB |
617 | break; |
618 | case WM8350_REV_G: | |
b797a555 | 619 | dev_info(wm8350->dev, "WM8350 Rev G\n"); |
d756f4a4 | 620 | wm8350->power.rev_g_coeff = 1; |
89b4012b | 621 | break; |
0c8a6016 | 622 | case WM8350_REV_H: |
b797a555 | 623 | dev_info(wm8350->dev, "WM8350 Rev H\n"); |
d756f4a4 | 624 | wm8350->power.rev_g_coeff = 1; |
0c8a6016 | 625 | break; |
89b4012b MB |
626 | default: |
627 | /* For safety we refuse to run on unknown hardware */ | |
b797a555 | 628 | dev_err(wm8350->dev, "Unknown WM8350 CHIP_REV\n"); |
89b4012b MB |
629 | ret = -ENODEV; |
630 | goto err; | |
631 | } | |
b797a555 MB |
632 | break; |
633 | ||
ca23f8c1 MB |
634 | case 1: |
635 | wm8350->pmic.max_dcdc = WM8350_DCDC_4; | |
636 | wm8350->pmic.max_isink = WM8350_ISINK_A; | |
637 | ||
638 | switch (chip_rev) { | |
639 | case 0: | |
640 | dev_info(wm8350->dev, "WM8351 Rev A\n"); | |
641 | wm8350->power.rev_g_coeff = 1; | |
642 | break; | |
643 | ||
02d46e07 MB |
644 | case 1: |
645 | dev_info(wm8350->dev, "WM8351 Rev B\n"); | |
646 | wm8350->power.rev_g_coeff = 1; | |
647 | break; | |
648 | ||
ca23f8c1 MB |
649 | default: |
650 | dev_err(wm8350->dev, "Unknown WM8351 CHIP_REV\n"); | |
651 | ret = -ENODEV; | |
652 | goto err; | |
653 | } | |
654 | break; | |
655 | ||
96920630 | 656 | case 2: |
645524a9 MB |
657 | wm8350->pmic.max_dcdc = WM8350_DCDC_6; |
658 | wm8350->pmic.max_isink = WM8350_ISINK_B; | |
659 | ||
96920630 MB |
660 | switch (chip_rev) { |
661 | case 0: | |
662 | dev_info(wm8350->dev, "WM8352 Rev A\n"); | |
663 | wm8350->power.rev_g_coeff = 1; | |
664 | break; | |
665 | ||
666 | default: | |
667 | dev_err(wm8350->dev, "Unknown WM8352 CHIP_REV\n"); | |
668 | ret = -ENODEV; | |
669 | goto err; | |
670 | } | |
671 | break; | |
672 | ||
b797a555 MB |
673 | default: |
674 | dev_err(wm8350->dev, "Unknown MASK_REV\n"); | |
89b4012b MB |
675 | ret = -ENODEV; |
676 | goto err; | |
677 | } | |
678 | ||
96920630 | 679 | ret = wm8350_create_cache(wm8350, mask_rev, mode); |
89b4012b | 680 | if (ret < 0) { |
b797a555 | 681 | dev_err(wm8350->dev, "Failed to create register cache\n"); |
89b4012b MB |
682 | return ret; |
683 | } | |
684 | ||
67488526 | 685 | mutex_init(&wm8350->auxadc_mutex); |
32064503 | 686 | |
e0a3389a MB |
687 | ret = wm8350_irq_init(wm8350, irq, pdata); |
688 | if (ret < 0) | |
ebccec0f | 689 | goto err; |
ebccec0f | 690 | |
62571c29 MB |
691 | if (pdata && pdata->init) { |
692 | ret = pdata->init(wm8350); | |
693 | if (ret != 0) { | |
694 | dev_err(wm8350->dev, "Platform init() failed: %d\n", | |
695 | ret); | |
e0a3389a | 696 | goto err_irq; |
62571c29 MB |
697 | } |
698 | } | |
699 | ||
ebccec0f MB |
700 | wm8350_reg_write(wm8350, WM8350_SYSTEM_INTERRUPTS_MASK, 0x0); |
701 | ||
add41cb4 MB |
702 | wm8350_client_dev_register(wm8350, "wm8350-codec", |
703 | &(wm8350->codec.pdev)); | |
704 | wm8350_client_dev_register(wm8350, "wm8350-gpio", | |
705 | &(wm8350->gpio.pdev)); | |
fb6c023a MB |
706 | wm8350_client_dev_register(wm8350, "wm8350-hwmon", |
707 | &(wm8350->hwmon.pdev)); | |
add41cb4 MB |
708 | wm8350_client_dev_register(wm8350, "wm8350-power", |
709 | &(wm8350->power.pdev)); | |
710 | wm8350_client_dev_register(wm8350, "wm8350-rtc", &(wm8350->rtc.pdev)); | |
711 | wm8350_client_dev_register(wm8350, "wm8350-wdt", &(wm8350->wdt.pdev)); | |
712 | ||
89b4012b MB |
713 | return 0; |
714 | ||
e0a3389a MB |
715 | err_irq: |
716 | wm8350_irq_exit(wm8350); | |
89b4012b MB |
717 | err: |
718 | kfree(wm8350->reg_cache); | |
719 | return ret; | |
720 | } | |
721 | EXPORT_SYMBOL_GPL(wm8350_device_init); | |
722 | ||
723 | void wm8350_device_exit(struct wm8350 *wm8350) | |
724 | { | |
da09155a MB |
725 | int i; |
726 | ||
0081e802 MB |
727 | for (i = 0; i < ARRAY_SIZE(wm8350->pmic.led); i++) |
728 | platform_device_unregister(wm8350->pmic.led[i].pdev); | |
729 | ||
da09155a | 730 | for (i = 0; i < ARRAY_SIZE(wm8350->pmic.pdev); i++) |
add41cb4 MB |
731 | platform_device_unregister(wm8350->pmic.pdev[i]); |
732 | ||
733 | platform_device_unregister(wm8350->wdt.pdev); | |
734 | platform_device_unregister(wm8350->rtc.pdev); | |
735 | platform_device_unregister(wm8350->power.pdev); | |
fb6c023a | 736 | platform_device_unregister(wm8350->hwmon.pdev); |
add41cb4 MB |
737 | platform_device_unregister(wm8350->gpio.pdev); |
738 | platform_device_unregister(wm8350->codec.pdev); | |
da09155a | 739 | |
e0a3389a MB |
740 | wm8350_irq_exit(wm8350); |
741 | ||
89b4012b MB |
742 | kfree(wm8350->reg_cache); |
743 | } | |
744 | EXPORT_SYMBOL_GPL(wm8350_device_exit); | |
745 | ||
ebccec0f | 746 | MODULE_DESCRIPTION("WM8350 AudioPlus PMIC core driver"); |
89b4012b | 747 | MODULE_LICENSE("GPL"); |