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33cf45c8 DP |
1 | /* |
2 | * wm8804.c -- WM8804 S/PDIF transceiver driver | |
3 | * | |
4 | * Copyright 2010 Wolfson Microelectronics plc | |
5 | * | |
6 | * Author: Dimitris Papastamos <dp@opensource.wolfsonmicro.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | */ | |
12 | ||
13 | #include <linux/module.h> | |
14 | #include <linux/moduleparam.h> | |
15 | #include <linux/init.h> | |
16 | #include <linux/delay.h> | |
17 | #include <linux/pm.h> | |
18 | #include <linux/i2c.h> | |
19 | #include <linux/spi/spi.h> | |
20 | #include <linux/regulator/consumer.h> | |
21 | #include <linux/slab.h> | |
22 | #include <sound/core.h> | |
23 | #include <sound/pcm.h> | |
24 | #include <sound/pcm_params.h> | |
25 | #include <sound/soc.h> | |
33cf45c8 DP |
26 | #include <sound/initval.h> |
27 | #include <sound/tlv.h> | |
28 | ||
29 | #include "wm8804.h" | |
30 | ||
31 | #define WM8804_NUM_SUPPLIES 2 | |
32 | static const char *wm8804_supply_names[WM8804_NUM_SUPPLIES] = { | |
33 | "PVDD", | |
34 | "DVDD" | |
35 | }; | |
36 | ||
37 | static const u8 wm8804_reg_defs[] = { | |
38 | 0x05, /* R0 - RST/DEVID1 */ | |
39 | 0x88, /* R1 - DEVID2 */ | |
40 | 0x04, /* R2 - DEVREV */ | |
41 | 0x21, /* R3 - PLL1 */ | |
42 | 0xFD, /* R4 - PLL2 */ | |
43 | 0x36, /* R5 - PLL3 */ | |
44 | 0x07, /* R6 - PLL4 */ | |
45 | 0x16, /* R7 - PLL5 */ | |
46 | 0x18, /* R8 - PLL6 */ | |
47 | 0xFF, /* R9 - SPDMODE */ | |
48 | 0x00, /* R10 - INTMASK */ | |
49 | 0x00, /* R11 - INTSTAT */ | |
50 | 0x00, /* R12 - SPDSTAT */ | |
51 | 0x00, /* R13 - RXCHAN1 */ | |
52 | 0x00, /* R14 - RXCHAN2 */ | |
53 | 0x00, /* R15 - RXCHAN3 */ | |
54 | 0x00, /* R16 - RXCHAN4 */ | |
55 | 0x00, /* R17 - RXCHAN5 */ | |
56 | 0x00, /* R18 - SPDTX1 */ | |
57 | 0x00, /* R19 - SPDTX2 */ | |
58 | 0x00, /* R20 - SPDTX3 */ | |
59 | 0x71, /* R21 - SPDTX4 */ | |
60 | 0x0B, /* R22 - SPDTX5 */ | |
61 | 0x70, /* R23 - GPO0 */ | |
62 | 0x57, /* R24 - GPO1 */ | |
63 | 0x00, /* R25 */ | |
64 | 0x42, /* R26 - GPO2 */ | |
65 | 0x06, /* R27 - AIFTX */ | |
66 | 0x06, /* R28 - AIFRX */ | |
67 | 0x80, /* R29 - SPDRX1 */ | |
68 | 0x07, /* R30 - PWRDN */ | |
69 | }; | |
70 | ||
71 | struct wm8804_priv { | |
72 | enum snd_soc_control_type control_type; | |
73 | struct regulator_bulk_data supplies[WM8804_NUM_SUPPLIES]; | |
74 | struct notifier_block disable_nb[WM8804_NUM_SUPPLIES]; | |
75 | struct snd_soc_codec *codec; | |
76 | }; | |
77 | ||
78 | static int txsrc_get(struct snd_kcontrol *kcontrol, | |
79 | struct snd_ctl_elem_value *ucontrol); | |
80 | ||
81 | static int txsrc_put(struct snd_kcontrol *kcontrol, | |
82 | struct snd_ctl_elem_value *ucontrol); | |
83 | ||
84 | /* | |
85 | * We can't use the same notifier block for more than one supply and | |
86 | * there's no way I can see to get from a callback to the caller | |
87 | * except container_of(). | |
88 | */ | |
89 | #define WM8804_REGULATOR_EVENT(n) \ | |
90 | static int wm8804_regulator_event_##n(struct notifier_block *nb, \ | |
91 | unsigned long event, void *data) \ | |
92 | { \ | |
93 | struct wm8804_priv *wm8804 = container_of(nb, struct wm8804_priv, \ | |
94 | disable_nb[n]); \ | |
95 | if (event & REGULATOR_EVENT_DISABLE) { \ | |
96 | wm8804->codec->cache_sync = 1; \ | |
97 | } \ | |
98 | return 0; \ | |
99 | } | |
100 | ||
101 | WM8804_REGULATOR_EVENT(0) | |
102 | WM8804_REGULATOR_EVENT(1) | |
103 | ||
104 | static const char *txsrc_text[] = { "S/PDIF RX", "AIF" }; | |
105 | static const SOC_ENUM_SINGLE_EXT_DECL(txsrc, txsrc_text); | |
106 | ||
107 | static const struct snd_kcontrol_new wm8804_snd_controls[] = { | |
108 | SOC_ENUM_EXT("Input Source", txsrc, txsrc_get, txsrc_put), | |
109 | SOC_SINGLE("TX Playback Switch", WM8804_PWRDN, 2, 1, 1), | |
110 | SOC_SINGLE("AIF Playback Switch", WM8804_PWRDN, 4, 1, 1) | |
111 | }; | |
112 | ||
113 | static int txsrc_get(struct snd_kcontrol *kcontrol, | |
114 | struct snd_ctl_elem_value *ucontrol) | |
115 | { | |
116 | struct snd_soc_codec *codec; | |
117 | unsigned int src; | |
118 | ||
119 | codec = snd_kcontrol_chip(kcontrol); | |
120 | src = snd_soc_read(codec, WM8804_SPDTX4); | |
121 | if (src & 0x40) | |
122 | ucontrol->value.integer.value[0] = 1; | |
123 | else | |
124 | ucontrol->value.integer.value[0] = 0; | |
125 | ||
126 | return 0; | |
127 | } | |
128 | ||
129 | static int txsrc_put(struct snd_kcontrol *kcontrol, | |
130 | struct snd_ctl_elem_value *ucontrol) | |
131 | { | |
132 | struct snd_soc_codec *codec; | |
133 | unsigned int src, txpwr; | |
134 | ||
135 | codec = snd_kcontrol_chip(kcontrol); | |
136 | ||
137 | if (ucontrol->value.integer.value[0] != 0 | |
138 | && ucontrol->value.integer.value[0] != 1) | |
139 | return -EINVAL; | |
140 | ||
141 | src = snd_soc_read(codec, WM8804_SPDTX4); | |
142 | switch ((src & 0x40) >> 6) { | |
143 | case 0: | |
144 | if (!ucontrol->value.integer.value[0]) | |
145 | return 0; | |
146 | break; | |
147 | case 1: | |
148 | if (ucontrol->value.integer.value[1]) | |
149 | return 0; | |
150 | break; | |
151 | } | |
152 | ||
153 | /* save the current power state of the transmitter */ | |
154 | txpwr = snd_soc_read(codec, WM8804_PWRDN) & 0x4; | |
155 | /* power down the transmitter */ | |
156 | snd_soc_update_bits(codec, WM8804_PWRDN, 0x4, 0x4); | |
157 | /* set the tx source */ | |
158 | snd_soc_update_bits(codec, WM8804_SPDTX4, 0x40, | |
159 | ucontrol->value.integer.value[0] << 6); | |
160 | ||
161 | if (ucontrol->value.integer.value[0]) { | |
162 | /* power down the receiver */ | |
163 | snd_soc_update_bits(codec, WM8804_PWRDN, 0x2, 0x2); | |
164 | /* power up the AIF */ | |
165 | snd_soc_update_bits(codec, WM8804_PWRDN, 0x10, 0); | |
166 | } else { | |
167 | /* don't power down the AIF -- may be used as an output */ | |
168 | /* power up the receiver */ | |
169 | snd_soc_update_bits(codec, WM8804_PWRDN, 0x2, 0); | |
170 | } | |
171 | ||
172 | /* restore the transmitter's configuration */ | |
173 | snd_soc_update_bits(codec, WM8804_PWRDN, 0x4, txpwr); | |
174 | ||
175 | return 0; | |
176 | } | |
177 | ||
d4754ec9 | 178 | static int wm8804_volatile(struct snd_soc_codec *codec, unsigned int reg) |
33cf45c8 DP |
179 | { |
180 | switch (reg) { | |
181 | case WM8804_RST_DEVID1: | |
182 | case WM8804_DEVID2: | |
183 | case WM8804_DEVREV: | |
184 | case WM8804_INTSTAT: | |
185 | case WM8804_SPDSTAT: | |
186 | case WM8804_RXCHAN1: | |
187 | case WM8804_RXCHAN2: | |
188 | case WM8804_RXCHAN3: | |
189 | case WM8804_RXCHAN4: | |
190 | case WM8804_RXCHAN5: | |
191 | return 1; | |
192 | default: | |
193 | break; | |
194 | } | |
195 | ||
196 | return 0; | |
197 | } | |
198 | ||
199 | static int wm8804_reset(struct snd_soc_codec *codec) | |
200 | { | |
201 | return snd_soc_write(codec, WM8804_RST_DEVID1, 0x0); | |
202 | } | |
203 | ||
204 | static int wm8804_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) | |
205 | { | |
206 | struct snd_soc_codec *codec; | |
207 | u16 format, master, bcp, lrp; | |
208 | ||
209 | codec = dai->codec; | |
210 | ||
211 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
212 | case SND_SOC_DAIFMT_I2S: | |
213 | format = 0x2; | |
214 | break; | |
215 | case SND_SOC_DAIFMT_RIGHT_J: | |
216 | format = 0x0; | |
217 | break; | |
218 | case SND_SOC_DAIFMT_LEFT_J: | |
219 | format = 0x1; | |
220 | break; | |
221 | case SND_SOC_DAIFMT_DSP_A: | |
222 | case SND_SOC_DAIFMT_DSP_B: | |
223 | format = 0x3; | |
224 | break; | |
225 | default: | |
226 | dev_err(dai->dev, "Unknown dai format\n"); | |
227 | return -EINVAL; | |
228 | } | |
229 | ||
230 | /* set data format */ | |
231 | snd_soc_update_bits(codec, WM8804_AIFTX, 0x3, format); | |
232 | snd_soc_update_bits(codec, WM8804_AIFRX, 0x3, format); | |
233 | ||
234 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
235 | case SND_SOC_DAIFMT_CBM_CFM: | |
236 | master = 1; | |
237 | break; | |
238 | case SND_SOC_DAIFMT_CBS_CFS: | |
239 | master = 0; | |
240 | break; | |
241 | default: | |
242 | dev_err(dai->dev, "Unknown master/slave configuration\n"); | |
243 | return -EINVAL; | |
244 | } | |
245 | ||
246 | /* set master/slave mode */ | |
247 | snd_soc_update_bits(codec, WM8804_AIFRX, 0x40, master << 6); | |
248 | ||
249 | bcp = lrp = 0; | |
250 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
251 | case SND_SOC_DAIFMT_NB_NF: | |
252 | break; | |
253 | case SND_SOC_DAIFMT_IB_IF: | |
254 | bcp = lrp = 1; | |
255 | break; | |
256 | case SND_SOC_DAIFMT_IB_NF: | |
257 | bcp = 1; | |
258 | break; | |
259 | case SND_SOC_DAIFMT_NB_IF: | |
260 | lrp = 1; | |
261 | break; | |
262 | default: | |
263 | dev_err(dai->dev, "Unknown polarity configuration\n"); | |
264 | return -EINVAL; | |
265 | } | |
266 | ||
267 | /* set frame inversion */ | |
268 | snd_soc_update_bits(codec, WM8804_AIFTX, 0x10 | 0x20, | |
269 | (bcp << 4) | (lrp << 5)); | |
270 | snd_soc_update_bits(codec, WM8804_AIFRX, 0x10 | 0x20, | |
271 | (bcp << 4) | (lrp << 5)); | |
272 | return 0; | |
273 | } | |
274 | ||
275 | static int wm8804_hw_params(struct snd_pcm_substream *substream, | |
276 | struct snd_pcm_hw_params *params, | |
277 | struct snd_soc_dai *dai) | |
278 | { | |
279 | struct snd_soc_codec *codec; | |
280 | u16 blen; | |
281 | ||
282 | codec = dai->codec; | |
283 | ||
284 | switch (params_format(params)) { | |
285 | case SNDRV_PCM_FORMAT_S16_LE: | |
286 | blen = 0x0; | |
287 | break; | |
288 | case SNDRV_PCM_FORMAT_S20_3LE: | |
289 | blen = 0x1; | |
290 | break; | |
291 | case SNDRV_PCM_FORMAT_S24_LE: | |
292 | blen = 0x2; | |
293 | break; | |
294 | default: | |
295 | dev_err(dai->dev, "Unsupported word length: %u\n", | |
296 | params_format(params)); | |
297 | return -EINVAL; | |
298 | } | |
299 | ||
300 | /* set word length */ | |
301 | snd_soc_update_bits(codec, WM8804_AIFTX, 0xc, blen << 2); | |
302 | snd_soc_update_bits(codec, WM8804_AIFRX, 0xc, blen << 2); | |
303 | ||
304 | return 0; | |
305 | } | |
306 | ||
307 | struct pll_div { | |
308 | u32 prescale:1; | |
309 | u32 mclkdiv:1; | |
310 | u32 freqmode:2; | |
311 | u32 n:4; | |
312 | u32 k:22; | |
313 | }; | |
314 | ||
315 | /* PLL rate to output rate divisions */ | |
316 | static struct { | |
317 | unsigned int div; | |
318 | unsigned int freqmode; | |
319 | unsigned int mclkdiv; | |
320 | } post_table[] = { | |
321 | { 2, 0, 0 }, | |
322 | { 4, 0, 1 }, | |
323 | { 4, 1, 0 }, | |
324 | { 8, 1, 1 }, | |
325 | { 8, 2, 0 }, | |
326 | { 16, 2, 1 }, | |
327 | { 12, 3, 0 }, | |
328 | { 24, 3, 1 } | |
329 | }; | |
330 | ||
331 | #define FIXED_PLL_SIZE ((1ULL << 22) * 10) | |
332 | static int pll_factors(struct pll_div *pll_div, unsigned int target, | |
333 | unsigned int source) | |
334 | { | |
335 | u64 Kpart; | |
336 | unsigned long int K, Ndiv, Nmod, tmp; | |
337 | int i; | |
338 | ||
339 | /* | |
340 | * Scale the output frequency up; the PLL should run in the | |
341 | * region of 90-100MHz. | |
342 | */ | |
343 | for (i = 0; i < ARRAY_SIZE(post_table); i++) { | |
344 | tmp = target * post_table[i].div; | |
345 | if (tmp >= 90000000 && tmp <= 100000000) { | |
346 | pll_div->freqmode = post_table[i].freqmode; | |
347 | pll_div->mclkdiv = post_table[i].mclkdiv; | |
348 | target *= post_table[i].div; | |
349 | break; | |
350 | } | |
351 | } | |
352 | ||
353 | if (i == ARRAY_SIZE(post_table)) { | |
354 | pr_err("%s: Unable to scale output frequency: %uHz\n", | |
355 | __func__, target); | |
356 | return -EINVAL; | |
357 | } | |
358 | ||
359 | pll_div->prescale = 0; | |
360 | Ndiv = target / source; | |
361 | if (Ndiv < 5) { | |
362 | source >>= 1; | |
363 | pll_div->prescale = 1; | |
364 | Ndiv = target / source; | |
365 | } | |
366 | ||
367 | if (Ndiv < 5 || Ndiv > 13) { | |
368 | pr_err("%s: WM8804 N value is not within the recommended range: %lu\n", | |
369 | __func__, Ndiv); | |
370 | return -EINVAL; | |
371 | } | |
372 | pll_div->n = Ndiv; | |
373 | ||
374 | Nmod = target % source; | |
375 | Kpart = FIXED_PLL_SIZE * (u64)Nmod; | |
376 | ||
377 | do_div(Kpart, source); | |
378 | ||
379 | K = Kpart & 0xffffffff; | |
380 | if ((K % 10) >= 5) | |
381 | K += 5; | |
382 | K /= 10; | |
383 | pll_div->k = K; | |
384 | ||
385 | return 0; | |
386 | } | |
387 | ||
388 | static int wm8804_set_pll(struct snd_soc_dai *dai, int pll_id, | |
389 | int source, unsigned int freq_in, | |
390 | unsigned int freq_out) | |
391 | { | |
33cf45c8 | 392 | struct snd_soc_codec *codec; |
33cf45c8 DP |
393 | |
394 | codec = dai->codec; | |
86ce6c9a DP |
395 | if (!freq_in || !freq_out) { |
396 | /* disable the PLL */ | |
6c20c807 | 397 | snd_soc_update_bits(codec, WM8804_PWRDN, 0x1, 0x1); |
86ce6c9a DP |
398 | return 0; |
399 | } else { | |
400 | int ret; | |
401 | struct pll_div pll_div; | |
402 | ||
33cf45c8 DP |
403 | ret = pll_factors(&pll_div, freq_out, freq_in); |
404 | if (ret) | |
405 | return ret; | |
33cf45c8 | 406 | |
86ce6c9a | 407 | /* power down the PLL before reprogramming it */ |
6c20c807 | 408 | snd_soc_update_bits(codec, WM8804_PWRDN, 0x1, 0x1); |
33cf45c8 | 409 | |
86ce6c9a DP |
410 | if (!freq_in || !freq_out) |
411 | return 0; | |
33cf45c8 | 412 | |
86ce6c9a DP |
413 | /* set PLLN and PRESCALE */ |
414 | snd_soc_update_bits(codec, WM8804_PLL4, 0xf | 0x10, | |
415 | pll_div.n | (pll_div.prescale << 4)); | |
416 | /* set mclkdiv and freqmode */ | |
417 | snd_soc_update_bits(codec, WM8804_PLL5, 0x3 | 0x8, | |
418 | pll_div.freqmode | (pll_div.mclkdiv << 3)); | |
419 | /* set PLLK */ | |
420 | snd_soc_write(codec, WM8804_PLL1, pll_div.k & 0xff); | |
421 | snd_soc_write(codec, WM8804_PLL2, (pll_div.k >> 8) & 0xff); | |
422 | snd_soc_write(codec, WM8804_PLL3, pll_div.k >> 16); | |
423 | ||
424 | /* power up the PLL */ | |
6c20c807 | 425 | snd_soc_update_bits(codec, WM8804_PWRDN, 0x1, 0); |
86ce6c9a | 426 | } |
33cf45c8 DP |
427 | |
428 | return 0; | |
429 | } | |
430 | ||
431 | static int wm8804_set_sysclk(struct snd_soc_dai *dai, | |
432 | int clk_id, unsigned int freq, int dir) | |
433 | { | |
434 | struct snd_soc_codec *codec; | |
435 | ||
436 | codec = dai->codec; | |
437 | ||
438 | switch (clk_id) { | |
439 | case WM8804_TX_CLKSRC_MCLK: | |
440 | if ((freq >= 10000000 && freq <= 14400000) | |
441 | || (freq >= 16280000 && freq <= 27000000)) | |
442 | snd_soc_update_bits(codec, WM8804_PLL6, 0x80, 0x80); | |
443 | else { | |
444 | dev_err(dai->dev, "OSCCLOCK is not within the " | |
445 | "recommended range: %uHz\n", freq); | |
446 | return -EINVAL; | |
447 | } | |
448 | break; | |
449 | case WM8804_TX_CLKSRC_PLL: | |
450 | snd_soc_update_bits(codec, WM8804_PLL6, 0x80, 0); | |
451 | break; | |
452 | case WM8804_CLKOUT_SRC_CLK1: | |
453 | snd_soc_update_bits(codec, WM8804_PLL6, 0x8, 0); | |
454 | break; | |
455 | case WM8804_CLKOUT_SRC_OSCCLK: | |
456 | snd_soc_update_bits(codec, WM8804_PLL6, 0x8, 0x8); | |
457 | break; | |
458 | default: | |
459 | dev_err(dai->dev, "Unknown clock source: %d\n", clk_id); | |
460 | return -EINVAL; | |
461 | } | |
462 | ||
463 | return 0; | |
464 | } | |
465 | ||
466 | static int wm8804_set_clkdiv(struct snd_soc_dai *dai, | |
467 | int div_id, int div) | |
468 | { | |
469 | struct snd_soc_codec *codec; | |
470 | ||
471 | codec = dai->codec; | |
472 | switch (div_id) { | |
473 | case WM8804_CLKOUT_DIV: | |
474 | snd_soc_update_bits(codec, WM8804_PLL5, 0x30, | |
475 | (div & 0x3) << 4); | |
476 | break; | |
477 | default: | |
478 | dev_err(dai->dev, "Unknown clock divider: %d\n", div_id); | |
479 | return -EINVAL; | |
480 | } | |
481 | return 0; | |
482 | } | |
483 | ||
484 | static void wm8804_sync_cache(struct snd_soc_codec *codec) | |
485 | { | |
486 | short i; | |
487 | u8 *cache; | |
488 | ||
489 | if (!codec->cache_sync) | |
490 | return; | |
491 | ||
492 | codec->cache_only = 0; | |
493 | cache = codec->reg_cache; | |
494 | for (i = 0; i < codec->driver->reg_cache_size; i++) { | |
495 | if (i == WM8804_RST_DEVID1 || cache[i] == wm8804_reg_defs[i]) | |
496 | continue; | |
497 | snd_soc_write(codec, i, cache[i]); | |
498 | } | |
499 | codec->cache_sync = 0; | |
500 | } | |
501 | ||
502 | static int wm8804_set_bias_level(struct snd_soc_codec *codec, | |
503 | enum snd_soc_bias_level level) | |
504 | { | |
505 | int ret; | |
506 | struct wm8804_priv *wm8804; | |
507 | ||
508 | wm8804 = snd_soc_codec_get_drvdata(codec); | |
509 | switch (level) { | |
510 | case SND_SOC_BIAS_ON: | |
511 | break; | |
512 | case SND_SOC_BIAS_PREPARE: | |
513 | /* power up the OSC and the PLL */ | |
514 | snd_soc_update_bits(codec, WM8804_PWRDN, 0x9, 0); | |
515 | break; | |
516 | case SND_SOC_BIAS_STANDBY: | |
ce6120cc | 517 | if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) { |
33cf45c8 DP |
518 | ret = regulator_bulk_enable(ARRAY_SIZE(wm8804->supplies), |
519 | wm8804->supplies); | |
520 | if (ret) { | |
521 | dev_err(codec->dev, | |
522 | "Failed to enable supplies: %d\n", | |
523 | ret); | |
524 | return ret; | |
525 | } | |
526 | wm8804_sync_cache(codec); | |
527 | } | |
528 | /* power down the OSC and the PLL */ | |
529 | snd_soc_update_bits(codec, WM8804_PWRDN, 0x9, 0x9); | |
530 | break; | |
531 | case SND_SOC_BIAS_OFF: | |
532 | /* power down the OSC and the PLL */ | |
533 | snd_soc_update_bits(codec, WM8804_PWRDN, 0x9, 0x9); | |
534 | regulator_bulk_disable(ARRAY_SIZE(wm8804->supplies), | |
535 | wm8804->supplies); | |
536 | break; | |
537 | } | |
538 | ||
ce6120cc | 539 | codec->dapm.bias_level = level; |
33cf45c8 DP |
540 | return 0; |
541 | } | |
542 | ||
543 | #ifdef CONFIG_PM | |
544 | static int wm8804_suspend(struct snd_soc_codec *codec, pm_message_t state) | |
545 | { | |
546 | wm8804_set_bias_level(codec, SND_SOC_BIAS_OFF); | |
547 | return 0; | |
548 | } | |
549 | ||
550 | static int wm8804_resume(struct snd_soc_codec *codec) | |
551 | { | |
552 | wm8804_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
553 | return 0; | |
554 | } | |
555 | #else | |
556 | #define wm8804_suspend NULL | |
557 | #define wm8804_resume NULL | |
558 | #endif | |
559 | ||
560 | static int wm8804_remove(struct snd_soc_codec *codec) | |
561 | { | |
562 | struct wm8804_priv *wm8804; | |
563 | int i; | |
564 | ||
565 | wm8804 = snd_soc_codec_get_drvdata(codec); | |
566 | wm8804_set_bias_level(codec, SND_SOC_BIAS_OFF); | |
567 | ||
568 | for (i = 0; i < ARRAY_SIZE(wm8804->supplies); ++i) | |
569 | regulator_unregister_notifier(wm8804->supplies[i].consumer, | |
570 | &wm8804->disable_nb[i]); | |
571 | regulator_bulk_free(ARRAY_SIZE(wm8804->supplies), wm8804->supplies); | |
572 | return 0; | |
573 | } | |
574 | ||
575 | static int wm8804_probe(struct snd_soc_codec *codec) | |
576 | { | |
577 | struct wm8804_priv *wm8804; | |
578 | int i, id1, id2, ret; | |
579 | ||
580 | wm8804 = snd_soc_codec_get_drvdata(codec); | |
581 | wm8804->codec = codec; | |
582 | ||
ce6120cc | 583 | codec->dapm.idle_bias_off = 1; |
33cf45c8 DP |
584 | |
585 | ret = snd_soc_codec_set_cache_io(codec, 8, 8, wm8804->control_type); | |
586 | if (ret < 0) { | |
587 | dev_err(codec->dev, "Failed to set cache i/o: %d\n", ret); | |
588 | return ret; | |
589 | } | |
590 | ||
591 | for (i = 0; i < ARRAY_SIZE(wm8804->supplies); i++) | |
592 | wm8804->supplies[i].supply = wm8804_supply_names[i]; | |
593 | ||
594 | ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8804->supplies), | |
595 | wm8804->supplies); | |
596 | if (ret) { | |
597 | dev_err(codec->dev, "Failed to request supplies: %d\n", ret); | |
598 | return ret; | |
599 | } | |
600 | ||
601 | wm8804->disable_nb[0].notifier_call = wm8804_regulator_event_0; | |
602 | wm8804->disable_nb[1].notifier_call = wm8804_regulator_event_1; | |
603 | ||
604 | /* This should really be moved into the regulator core */ | |
605 | for (i = 0; i < ARRAY_SIZE(wm8804->supplies); i++) { | |
606 | ret = regulator_register_notifier(wm8804->supplies[i].consumer, | |
607 | &wm8804->disable_nb[i]); | |
608 | if (ret != 0) { | |
609 | dev_err(codec->dev, | |
610 | "Failed to register regulator notifier: %d\n", | |
611 | ret); | |
612 | } | |
613 | } | |
614 | ||
615 | ret = regulator_bulk_enable(ARRAY_SIZE(wm8804->supplies), | |
616 | wm8804->supplies); | |
617 | if (ret) { | |
618 | dev_err(codec->dev, "Failed to enable supplies: %d\n", ret); | |
619 | goto err_reg_get; | |
620 | } | |
621 | ||
622 | id1 = snd_soc_read(codec, WM8804_RST_DEVID1); | |
623 | if (id1 < 0) { | |
624 | dev_err(codec->dev, "Failed to read device ID: %d\n", id1); | |
625 | ret = id1; | |
626 | goto err_reg_enable; | |
627 | } | |
628 | ||
629 | id2 = snd_soc_read(codec, WM8804_DEVID2); | |
630 | if (id2 < 0) { | |
631 | dev_err(codec->dev, "Failed to read device ID: %d\n", id2); | |
632 | ret = id2; | |
633 | goto err_reg_enable; | |
634 | } | |
635 | ||
636 | id2 = (id2 << 8) | id1; | |
637 | ||
638 | if (id2 != ((wm8804_reg_defs[WM8804_DEVID2] << 8) | |
639 | | wm8804_reg_defs[WM8804_RST_DEVID1])) { | |
640 | dev_err(codec->dev, "Invalid device ID: %#x\n", id2); | |
641 | ret = -EINVAL; | |
642 | goto err_reg_enable; | |
643 | } | |
644 | ||
e595b325 DP |
645 | ret = snd_soc_read(codec, WM8804_DEVREV); |
646 | if (ret < 0) { | |
647 | dev_err(codec->dev, "Failed to read device revision: %d\n", | |
648 | ret); | |
649 | goto err_reg_enable; | |
650 | } | |
651 | dev_info(codec->dev, "revision %c\n", ret + 'A'); | |
652 | ||
33cf45c8 DP |
653 | ret = wm8804_reset(codec); |
654 | if (ret < 0) { | |
655 | dev_err(codec->dev, "Failed to issue reset: %d\n", ret); | |
656 | goto err_reg_enable; | |
657 | } | |
658 | ||
659 | wm8804_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
660 | ||
661 | snd_soc_add_controls(codec, wm8804_snd_controls, | |
662 | ARRAY_SIZE(wm8804_snd_controls)); | |
663 | return 0; | |
664 | ||
665 | err_reg_enable: | |
666 | regulator_bulk_disable(ARRAY_SIZE(wm8804->supplies), wm8804->supplies); | |
667 | err_reg_get: | |
668 | regulator_bulk_free(ARRAY_SIZE(wm8804->supplies), wm8804->supplies); | |
669 | return ret; | |
670 | } | |
671 | ||
672 | static struct snd_soc_dai_ops wm8804_dai_ops = { | |
673 | .hw_params = wm8804_hw_params, | |
674 | .set_fmt = wm8804_set_fmt, | |
675 | .set_sysclk = wm8804_set_sysclk, | |
676 | .set_clkdiv = wm8804_set_clkdiv, | |
677 | .set_pll = wm8804_set_pll | |
678 | }; | |
679 | ||
680 | #define WM8804_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ | |
681 | SNDRV_PCM_FMTBIT_S24_LE) | |
682 | ||
683 | static struct snd_soc_dai_driver wm8804_dai = { | |
cb13c6b3 | 684 | .name = "wm8804-spdif", |
33cf45c8 DP |
685 | .playback = { |
686 | .stream_name = "Playback", | |
687 | .channels_min = 2, | |
688 | .channels_max = 2, | |
689 | .rates = SNDRV_PCM_RATE_8000_192000, | |
690 | .formats = WM8804_FORMATS, | |
691 | }, | |
692 | .capture = { | |
693 | .stream_name = "Capture", | |
694 | .channels_min = 2, | |
695 | .channels_max = 2, | |
696 | .rates = SNDRV_PCM_RATE_8000_192000, | |
697 | .formats = WM8804_FORMATS, | |
698 | }, | |
699 | .ops = &wm8804_dai_ops, | |
700 | .symmetric_rates = 1 | |
701 | }; | |
702 | ||
703 | static struct snd_soc_codec_driver soc_codec_dev_wm8804 = { | |
704 | .probe = wm8804_probe, | |
705 | .remove = wm8804_remove, | |
706 | .suspend = wm8804_suspend, | |
707 | .resume = wm8804_resume, | |
708 | .set_bias_level = wm8804_set_bias_level, | |
709 | .reg_cache_size = ARRAY_SIZE(wm8804_reg_defs), | |
710 | .reg_word_size = sizeof(u8), | |
711 | .reg_cache_default = wm8804_reg_defs, | |
712 | .volatile_register = wm8804_volatile | |
713 | }; | |
714 | ||
715 | #if defined(CONFIG_SPI_MASTER) | |
716 | static int __devinit wm8804_spi_probe(struct spi_device *spi) | |
717 | { | |
718 | struct wm8804_priv *wm8804; | |
719 | int ret; | |
720 | ||
721 | wm8804 = kzalloc(sizeof *wm8804, GFP_KERNEL); | |
fe3e2e7f DC |
722 | if (!wm8804) |
723 | return -ENOMEM; | |
33cf45c8 DP |
724 | |
725 | wm8804->control_type = SND_SOC_SPI; | |
726 | spi_set_drvdata(spi, wm8804); | |
727 | ||
728 | ret = snd_soc_register_codec(&spi->dev, | |
729 | &soc_codec_dev_wm8804, &wm8804_dai, 1); | |
730 | if (ret < 0) | |
731 | kfree(wm8804); | |
732 | return ret; | |
733 | } | |
734 | ||
735 | static int __devexit wm8804_spi_remove(struct spi_device *spi) | |
736 | { | |
737 | snd_soc_unregister_codec(&spi->dev); | |
738 | kfree(spi_get_drvdata(spi)); | |
739 | return 0; | |
740 | } | |
741 | ||
742 | static struct spi_driver wm8804_spi_driver = { | |
743 | .driver = { | |
744 | .name = "wm8804", | |
745 | .owner = THIS_MODULE, | |
746 | }, | |
747 | .probe = wm8804_spi_probe, | |
748 | .remove = __devexit_p(wm8804_spi_remove) | |
749 | }; | |
750 | #endif | |
751 | ||
752 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
753 | static __devinit int wm8804_i2c_probe(struct i2c_client *i2c, | |
754 | const struct i2c_device_id *id) | |
755 | { | |
756 | struct wm8804_priv *wm8804; | |
757 | int ret; | |
758 | ||
759 | wm8804 = kzalloc(sizeof *wm8804, GFP_KERNEL); | |
fe3e2e7f DC |
760 | if (!wm8804) |
761 | return -ENOMEM; | |
33cf45c8 DP |
762 | |
763 | wm8804->control_type = SND_SOC_I2C; | |
764 | i2c_set_clientdata(i2c, wm8804); | |
765 | ||
766 | ret = snd_soc_register_codec(&i2c->dev, | |
767 | &soc_codec_dev_wm8804, &wm8804_dai, 1); | |
768 | if (ret < 0) | |
769 | kfree(wm8804); | |
770 | return ret; | |
771 | } | |
772 | ||
773 | static __devexit int wm8804_i2c_remove(struct i2c_client *client) | |
774 | { | |
775 | snd_soc_unregister_codec(&client->dev); | |
776 | kfree(i2c_get_clientdata(client)); | |
777 | return 0; | |
778 | } | |
779 | ||
780 | static const struct i2c_device_id wm8804_i2c_id[] = { | |
781 | { "wm8804", 0 }, | |
782 | { } | |
783 | }; | |
784 | MODULE_DEVICE_TABLE(i2c, wm8804_i2c_id); | |
785 | ||
786 | static struct i2c_driver wm8804_i2c_driver = { | |
787 | .driver = { | |
788 | .name = "wm8804", | |
789 | .owner = THIS_MODULE, | |
790 | }, | |
791 | .probe = wm8804_i2c_probe, | |
792 | .remove = __devexit_p(wm8804_i2c_remove), | |
793 | .id_table = wm8804_i2c_id | |
794 | }; | |
795 | #endif | |
796 | ||
797 | static int __init wm8804_modinit(void) | |
798 | { | |
799 | int ret = 0; | |
800 | ||
801 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
802 | ret = i2c_add_driver(&wm8804_i2c_driver); | |
803 | if (ret) { | |
804 | printk(KERN_ERR "Failed to register wm8804 I2C driver: %d\n", | |
805 | ret); | |
806 | } | |
807 | #endif | |
808 | #if defined(CONFIG_SPI_MASTER) | |
809 | ret = spi_register_driver(&wm8804_spi_driver); | |
810 | if (ret != 0) { | |
811 | printk(KERN_ERR "Failed to register wm8804 SPI driver: %d\n", | |
812 | ret); | |
813 | } | |
814 | #endif | |
815 | return ret; | |
816 | } | |
817 | module_init(wm8804_modinit); | |
818 | ||
819 | static void __exit wm8804_exit(void) | |
820 | { | |
821 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
822 | i2c_del_driver(&wm8804_i2c_driver); | |
823 | #endif | |
824 | #if defined(CONFIG_SPI_MASTER) | |
825 | spi_unregister_driver(&wm8804_spi_driver); | |
826 | #endif | |
827 | } | |
828 | module_exit(wm8804_exit); | |
829 | ||
830 | MODULE_DESCRIPTION("ASoC WM8804 driver"); | |
831 | MODULE_AUTHOR("Dimitris Papastamos <dp@opensource.wolfsonmicro.com>"); | |
832 | MODULE_LICENSE("GPL"); |