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33cf45c8 DP |
1 | /* |
2 | * wm8804.c -- WM8804 S/PDIF transceiver driver | |
3 | * | |
656baaeb | 4 | * Copyright 2010-11 Wolfson Microelectronics plc |
33cf45c8 DP |
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> | |
d2dd0540 | 19 | #include <linux/of_device.h> |
33cf45c8 | 20 | #include <linux/spi/spi.h> |
891271c2 | 21 | #include <linux/regmap.h> |
33cf45c8 DP |
22 | #include <linux/regulator/consumer.h> |
23 | #include <linux/slab.h> | |
24 | #include <sound/core.h> | |
25 | #include <sound/pcm.h> | |
26 | #include <sound/pcm_params.h> | |
27 | #include <sound/soc.h> | |
33cf45c8 DP |
28 | #include <sound/initval.h> |
29 | #include <sound/tlv.h> | |
30 | ||
31 | #include "wm8804.h" | |
32 | ||
33 | #define WM8804_NUM_SUPPLIES 2 | |
34 | static const char *wm8804_supply_names[WM8804_NUM_SUPPLIES] = { | |
35 | "PVDD", | |
36 | "DVDD" | |
37 | }; | |
38 | ||
891271c2 MB |
39 | static const struct reg_default wm8804_reg_defaults[] = { |
40 | { 3, 0x21 }, /* R3 - PLL1 */ | |
41 | { 4, 0xFD }, /* R4 - PLL2 */ | |
42 | { 5, 0x36 }, /* R5 - PLL3 */ | |
43 | { 6, 0x07 }, /* R6 - PLL4 */ | |
44 | { 7, 0x16 }, /* R7 - PLL5 */ | |
45 | { 8, 0x18 }, /* R8 - PLL6 */ | |
46 | { 9, 0xFF }, /* R9 - SPDMODE */ | |
47 | { 10, 0x00 }, /* R10 - INTMASK */ | |
48 | { 18, 0x00 }, /* R18 - SPDTX1 */ | |
49 | { 19, 0x00 }, /* R19 - SPDTX2 */ | |
50 | { 20, 0x00 }, /* R20 - SPDTX3 */ | |
51 | { 21, 0x71 }, /* R21 - SPDTX4 */ | |
52 | { 22, 0x0B }, /* R22 - SPDTX5 */ | |
53 | { 23, 0x70 }, /* R23 - GPO0 */ | |
54 | { 24, 0x57 }, /* R24 - GPO1 */ | |
55 | { 26, 0x42 }, /* R26 - GPO2 */ | |
56 | { 27, 0x06 }, /* R27 - AIFTX */ | |
57 | { 28, 0x06 }, /* R28 - AIFRX */ | |
58 | { 29, 0x80 }, /* R29 - SPDRX1 */ | |
59 | { 30, 0x07 }, /* R30 - PWRDN */ | |
33cf45c8 DP |
60 | }; |
61 | ||
62 | struct wm8804_priv { | |
891271c2 | 63 | struct regmap *regmap; |
33cf45c8 DP |
64 | struct regulator_bulk_data supplies[WM8804_NUM_SUPPLIES]; |
65 | struct notifier_block disable_nb[WM8804_NUM_SUPPLIES]; | |
33cf45c8 DP |
66 | }; |
67 | ||
68 | static int txsrc_get(struct snd_kcontrol *kcontrol, | |
69 | struct snd_ctl_elem_value *ucontrol); | |
70 | ||
71 | static int txsrc_put(struct snd_kcontrol *kcontrol, | |
72 | struct snd_ctl_elem_value *ucontrol); | |
73 | ||
74 | /* | |
75 | * We can't use the same notifier block for more than one supply and | |
76 | * there's no way I can see to get from a callback to the caller | |
77 | * except container_of(). | |
78 | */ | |
79 | #define WM8804_REGULATOR_EVENT(n) \ | |
80 | static int wm8804_regulator_event_##n(struct notifier_block *nb, \ | |
81 | unsigned long event, void *data) \ | |
82 | { \ | |
83 | struct wm8804_priv *wm8804 = container_of(nb, struct wm8804_priv, \ | |
84 | disable_nb[n]); \ | |
85 | if (event & REGULATOR_EVENT_DISABLE) { \ | |
891271c2 | 86 | regcache_mark_dirty(wm8804->regmap); \ |
33cf45c8 DP |
87 | } \ |
88 | return 0; \ | |
89 | } | |
90 | ||
91 | WM8804_REGULATOR_EVENT(0) | |
92 | WM8804_REGULATOR_EVENT(1) | |
93 | ||
94 | static const char *txsrc_text[] = { "S/PDIF RX", "AIF" }; | |
da9f39f5 | 95 | static SOC_ENUM_SINGLE_EXT_DECL(txsrc, txsrc_text); |
33cf45c8 DP |
96 | |
97 | static const struct snd_kcontrol_new wm8804_snd_controls[] = { | |
98 | SOC_ENUM_EXT("Input Source", txsrc, txsrc_get, txsrc_put), | |
99 | SOC_SINGLE("TX Playback Switch", WM8804_PWRDN, 2, 1, 1), | |
100 | SOC_SINGLE("AIF Playback Switch", WM8804_PWRDN, 4, 1, 1) | |
101 | }; | |
102 | ||
103 | static int txsrc_get(struct snd_kcontrol *kcontrol, | |
104 | struct snd_ctl_elem_value *ucontrol) | |
105 | { | |
106 | struct snd_soc_codec *codec; | |
107 | unsigned int src; | |
108 | ||
109 | codec = snd_kcontrol_chip(kcontrol); | |
110 | src = snd_soc_read(codec, WM8804_SPDTX4); | |
111 | if (src & 0x40) | |
112 | ucontrol->value.integer.value[0] = 1; | |
113 | else | |
114 | ucontrol->value.integer.value[0] = 0; | |
115 | ||
116 | return 0; | |
117 | } | |
118 | ||
119 | static int txsrc_put(struct snd_kcontrol *kcontrol, | |
120 | struct snd_ctl_elem_value *ucontrol) | |
121 | { | |
122 | struct snd_soc_codec *codec; | |
123 | unsigned int src, txpwr; | |
124 | ||
125 | codec = snd_kcontrol_chip(kcontrol); | |
126 | ||
127 | if (ucontrol->value.integer.value[0] != 0 | |
128 | && ucontrol->value.integer.value[0] != 1) | |
129 | return -EINVAL; | |
130 | ||
131 | src = snd_soc_read(codec, WM8804_SPDTX4); | |
132 | switch ((src & 0x40) >> 6) { | |
133 | case 0: | |
134 | if (!ucontrol->value.integer.value[0]) | |
135 | return 0; | |
136 | break; | |
137 | case 1: | |
138 | if (ucontrol->value.integer.value[1]) | |
139 | return 0; | |
140 | break; | |
141 | } | |
142 | ||
143 | /* save the current power state of the transmitter */ | |
144 | txpwr = snd_soc_read(codec, WM8804_PWRDN) & 0x4; | |
145 | /* power down the transmitter */ | |
146 | snd_soc_update_bits(codec, WM8804_PWRDN, 0x4, 0x4); | |
147 | /* set the tx source */ | |
148 | snd_soc_update_bits(codec, WM8804_SPDTX4, 0x40, | |
149 | ucontrol->value.integer.value[0] << 6); | |
150 | ||
151 | if (ucontrol->value.integer.value[0]) { | |
152 | /* power down the receiver */ | |
153 | snd_soc_update_bits(codec, WM8804_PWRDN, 0x2, 0x2); | |
154 | /* power up the AIF */ | |
155 | snd_soc_update_bits(codec, WM8804_PWRDN, 0x10, 0); | |
156 | } else { | |
157 | /* don't power down the AIF -- may be used as an output */ | |
158 | /* power up the receiver */ | |
159 | snd_soc_update_bits(codec, WM8804_PWRDN, 0x2, 0); | |
160 | } | |
161 | ||
162 | /* restore the transmitter's configuration */ | |
163 | snd_soc_update_bits(codec, WM8804_PWRDN, 0x4, txpwr); | |
164 | ||
165 | return 0; | |
166 | } | |
167 | ||
891271c2 | 168 | static bool wm8804_volatile(struct device *dev, unsigned int reg) |
33cf45c8 DP |
169 | { |
170 | switch (reg) { | |
171 | case WM8804_RST_DEVID1: | |
172 | case WM8804_DEVID2: | |
173 | case WM8804_DEVREV: | |
174 | case WM8804_INTSTAT: | |
175 | case WM8804_SPDSTAT: | |
176 | case WM8804_RXCHAN1: | |
177 | case WM8804_RXCHAN2: | |
178 | case WM8804_RXCHAN3: | |
179 | case WM8804_RXCHAN4: | |
180 | case WM8804_RXCHAN5: | |
891271c2 | 181 | return true; |
33cf45c8 | 182 | default: |
891271c2 | 183 | return false; |
33cf45c8 | 184 | } |
33cf45c8 DP |
185 | } |
186 | ||
187 | static int wm8804_reset(struct snd_soc_codec *codec) | |
188 | { | |
189 | return snd_soc_write(codec, WM8804_RST_DEVID1, 0x0); | |
190 | } | |
191 | ||
192 | static int wm8804_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) | |
193 | { | |
194 | struct snd_soc_codec *codec; | |
195 | u16 format, master, bcp, lrp; | |
196 | ||
197 | codec = dai->codec; | |
198 | ||
199 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
200 | case SND_SOC_DAIFMT_I2S: | |
201 | format = 0x2; | |
202 | break; | |
203 | case SND_SOC_DAIFMT_RIGHT_J: | |
204 | format = 0x0; | |
205 | break; | |
206 | case SND_SOC_DAIFMT_LEFT_J: | |
207 | format = 0x1; | |
208 | break; | |
209 | case SND_SOC_DAIFMT_DSP_A: | |
210 | case SND_SOC_DAIFMT_DSP_B: | |
211 | format = 0x3; | |
212 | break; | |
213 | default: | |
214 | dev_err(dai->dev, "Unknown dai format\n"); | |
215 | return -EINVAL; | |
216 | } | |
217 | ||
218 | /* set data format */ | |
219 | snd_soc_update_bits(codec, WM8804_AIFTX, 0x3, format); | |
220 | snd_soc_update_bits(codec, WM8804_AIFRX, 0x3, format); | |
221 | ||
222 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
223 | case SND_SOC_DAIFMT_CBM_CFM: | |
224 | master = 1; | |
225 | break; | |
226 | case SND_SOC_DAIFMT_CBS_CFS: | |
227 | master = 0; | |
228 | break; | |
229 | default: | |
230 | dev_err(dai->dev, "Unknown master/slave configuration\n"); | |
231 | return -EINVAL; | |
232 | } | |
233 | ||
234 | /* set master/slave mode */ | |
235 | snd_soc_update_bits(codec, WM8804_AIFRX, 0x40, master << 6); | |
236 | ||
237 | bcp = lrp = 0; | |
238 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
239 | case SND_SOC_DAIFMT_NB_NF: | |
240 | break; | |
241 | case SND_SOC_DAIFMT_IB_IF: | |
242 | bcp = lrp = 1; | |
243 | break; | |
244 | case SND_SOC_DAIFMT_IB_NF: | |
245 | bcp = 1; | |
246 | break; | |
247 | case SND_SOC_DAIFMT_NB_IF: | |
248 | lrp = 1; | |
249 | break; | |
250 | default: | |
251 | dev_err(dai->dev, "Unknown polarity configuration\n"); | |
252 | return -EINVAL; | |
253 | } | |
254 | ||
255 | /* set frame inversion */ | |
256 | snd_soc_update_bits(codec, WM8804_AIFTX, 0x10 | 0x20, | |
257 | (bcp << 4) | (lrp << 5)); | |
258 | snd_soc_update_bits(codec, WM8804_AIFRX, 0x10 | 0x20, | |
259 | (bcp << 4) | (lrp << 5)); | |
260 | return 0; | |
261 | } | |
262 | ||
263 | static int wm8804_hw_params(struct snd_pcm_substream *substream, | |
264 | struct snd_pcm_hw_params *params, | |
265 | struct snd_soc_dai *dai) | |
266 | { | |
267 | struct snd_soc_codec *codec; | |
268 | u16 blen; | |
269 | ||
270 | codec = dai->codec; | |
271 | ||
272 | switch (params_format(params)) { | |
273 | case SNDRV_PCM_FORMAT_S16_LE: | |
274 | blen = 0x0; | |
275 | break; | |
276 | case SNDRV_PCM_FORMAT_S20_3LE: | |
277 | blen = 0x1; | |
278 | break; | |
279 | case SNDRV_PCM_FORMAT_S24_LE: | |
280 | blen = 0x2; | |
281 | break; | |
282 | default: | |
283 | dev_err(dai->dev, "Unsupported word length: %u\n", | |
284 | params_format(params)); | |
285 | return -EINVAL; | |
286 | } | |
287 | ||
288 | /* set word length */ | |
289 | snd_soc_update_bits(codec, WM8804_AIFTX, 0xc, blen << 2); | |
290 | snd_soc_update_bits(codec, WM8804_AIFRX, 0xc, blen << 2); | |
291 | ||
292 | return 0; | |
293 | } | |
294 | ||
295 | struct pll_div { | |
296 | u32 prescale:1; | |
297 | u32 mclkdiv:1; | |
298 | u32 freqmode:2; | |
299 | u32 n:4; | |
300 | u32 k:22; | |
301 | }; | |
302 | ||
303 | /* PLL rate to output rate divisions */ | |
304 | static struct { | |
305 | unsigned int div; | |
306 | unsigned int freqmode; | |
307 | unsigned int mclkdiv; | |
308 | } post_table[] = { | |
309 | { 2, 0, 0 }, | |
310 | { 4, 0, 1 }, | |
311 | { 4, 1, 0 }, | |
312 | { 8, 1, 1 }, | |
313 | { 8, 2, 0 }, | |
314 | { 16, 2, 1 }, | |
315 | { 12, 3, 0 }, | |
316 | { 24, 3, 1 } | |
317 | }; | |
318 | ||
319 | #define FIXED_PLL_SIZE ((1ULL << 22) * 10) | |
320 | static int pll_factors(struct pll_div *pll_div, unsigned int target, | |
321 | unsigned int source) | |
322 | { | |
323 | u64 Kpart; | |
324 | unsigned long int K, Ndiv, Nmod, tmp; | |
325 | int i; | |
326 | ||
327 | /* | |
328 | * Scale the output frequency up; the PLL should run in the | |
329 | * region of 90-100MHz. | |
330 | */ | |
331 | for (i = 0; i < ARRAY_SIZE(post_table); i++) { | |
332 | tmp = target * post_table[i].div; | |
333 | if (tmp >= 90000000 && tmp <= 100000000) { | |
334 | pll_div->freqmode = post_table[i].freqmode; | |
335 | pll_div->mclkdiv = post_table[i].mclkdiv; | |
336 | target *= post_table[i].div; | |
337 | break; | |
338 | } | |
339 | } | |
340 | ||
341 | if (i == ARRAY_SIZE(post_table)) { | |
342 | pr_err("%s: Unable to scale output frequency: %uHz\n", | |
343 | __func__, target); | |
344 | return -EINVAL; | |
345 | } | |
346 | ||
347 | pll_div->prescale = 0; | |
348 | Ndiv = target / source; | |
349 | if (Ndiv < 5) { | |
350 | source >>= 1; | |
351 | pll_div->prescale = 1; | |
352 | Ndiv = target / source; | |
353 | } | |
354 | ||
355 | if (Ndiv < 5 || Ndiv > 13) { | |
356 | pr_err("%s: WM8804 N value is not within the recommended range: %lu\n", | |
357 | __func__, Ndiv); | |
358 | return -EINVAL; | |
359 | } | |
360 | pll_div->n = Ndiv; | |
361 | ||
362 | Nmod = target % source; | |
363 | Kpart = FIXED_PLL_SIZE * (u64)Nmod; | |
364 | ||
365 | do_div(Kpart, source); | |
366 | ||
367 | K = Kpart & 0xffffffff; | |
368 | if ((K % 10) >= 5) | |
369 | K += 5; | |
370 | K /= 10; | |
371 | pll_div->k = K; | |
372 | ||
373 | return 0; | |
374 | } | |
375 | ||
376 | static int wm8804_set_pll(struct snd_soc_dai *dai, int pll_id, | |
377 | int source, unsigned int freq_in, | |
378 | unsigned int freq_out) | |
379 | { | |
33cf45c8 | 380 | struct snd_soc_codec *codec; |
33cf45c8 DP |
381 | |
382 | codec = dai->codec; | |
86ce6c9a DP |
383 | if (!freq_in || !freq_out) { |
384 | /* disable the PLL */ | |
6c20c807 | 385 | snd_soc_update_bits(codec, WM8804_PWRDN, 0x1, 0x1); |
86ce6c9a DP |
386 | return 0; |
387 | } else { | |
388 | int ret; | |
389 | struct pll_div pll_div; | |
390 | ||
33cf45c8 DP |
391 | ret = pll_factors(&pll_div, freq_out, freq_in); |
392 | if (ret) | |
393 | return ret; | |
33cf45c8 | 394 | |
86ce6c9a | 395 | /* power down the PLL before reprogramming it */ |
6c20c807 | 396 | snd_soc_update_bits(codec, WM8804_PWRDN, 0x1, 0x1); |
33cf45c8 | 397 | |
86ce6c9a DP |
398 | /* set PLLN and PRESCALE */ |
399 | snd_soc_update_bits(codec, WM8804_PLL4, 0xf | 0x10, | |
400 | pll_div.n | (pll_div.prescale << 4)); | |
401 | /* set mclkdiv and freqmode */ | |
402 | snd_soc_update_bits(codec, WM8804_PLL5, 0x3 | 0x8, | |
403 | pll_div.freqmode | (pll_div.mclkdiv << 3)); | |
404 | /* set PLLK */ | |
405 | snd_soc_write(codec, WM8804_PLL1, pll_div.k & 0xff); | |
406 | snd_soc_write(codec, WM8804_PLL2, (pll_div.k >> 8) & 0xff); | |
407 | snd_soc_write(codec, WM8804_PLL3, pll_div.k >> 16); | |
408 | ||
409 | /* power up the PLL */ | |
6c20c807 | 410 | snd_soc_update_bits(codec, WM8804_PWRDN, 0x1, 0); |
86ce6c9a | 411 | } |
33cf45c8 DP |
412 | |
413 | return 0; | |
414 | } | |
415 | ||
416 | static int wm8804_set_sysclk(struct snd_soc_dai *dai, | |
417 | int clk_id, unsigned int freq, int dir) | |
418 | { | |
419 | struct snd_soc_codec *codec; | |
420 | ||
421 | codec = dai->codec; | |
422 | ||
423 | switch (clk_id) { | |
424 | case WM8804_TX_CLKSRC_MCLK: | |
425 | if ((freq >= 10000000 && freq <= 14400000) | |
426 | || (freq >= 16280000 && freq <= 27000000)) | |
427 | snd_soc_update_bits(codec, WM8804_PLL6, 0x80, 0x80); | |
428 | else { | |
429 | dev_err(dai->dev, "OSCCLOCK is not within the " | |
430 | "recommended range: %uHz\n", freq); | |
431 | return -EINVAL; | |
432 | } | |
433 | break; | |
434 | case WM8804_TX_CLKSRC_PLL: | |
435 | snd_soc_update_bits(codec, WM8804_PLL6, 0x80, 0); | |
436 | break; | |
437 | case WM8804_CLKOUT_SRC_CLK1: | |
438 | snd_soc_update_bits(codec, WM8804_PLL6, 0x8, 0); | |
439 | break; | |
440 | case WM8804_CLKOUT_SRC_OSCCLK: | |
441 | snd_soc_update_bits(codec, WM8804_PLL6, 0x8, 0x8); | |
442 | break; | |
443 | default: | |
444 | dev_err(dai->dev, "Unknown clock source: %d\n", clk_id); | |
445 | return -EINVAL; | |
446 | } | |
447 | ||
448 | return 0; | |
449 | } | |
450 | ||
451 | static int wm8804_set_clkdiv(struct snd_soc_dai *dai, | |
452 | int div_id, int div) | |
453 | { | |
454 | struct snd_soc_codec *codec; | |
455 | ||
456 | codec = dai->codec; | |
457 | switch (div_id) { | |
458 | case WM8804_CLKOUT_DIV: | |
459 | snd_soc_update_bits(codec, WM8804_PLL5, 0x30, | |
460 | (div & 0x3) << 4); | |
461 | break; | |
462 | default: | |
463 | dev_err(dai->dev, "Unknown clock divider: %d\n", div_id); | |
464 | return -EINVAL; | |
465 | } | |
466 | return 0; | |
467 | } | |
468 | ||
33cf45c8 DP |
469 | static int wm8804_set_bias_level(struct snd_soc_codec *codec, |
470 | enum snd_soc_bias_level level) | |
471 | { | |
472 | int ret; | |
473 | struct wm8804_priv *wm8804; | |
474 | ||
475 | wm8804 = snd_soc_codec_get_drvdata(codec); | |
476 | switch (level) { | |
477 | case SND_SOC_BIAS_ON: | |
478 | break; | |
479 | case SND_SOC_BIAS_PREPARE: | |
480 | /* power up the OSC and the PLL */ | |
481 | snd_soc_update_bits(codec, WM8804_PWRDN, 0x9, 0); | |
482 | break; | |
483 | case SND_SOC_BIAS_STANDBY: | |
ce6120cc | 484 | if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) { |
33cf45c8 DP |
485 | ret = regulator_bulk_enable(ARRAY_SIZE(wm8804->supplies), |
486 | wm8804->supplies); | |
487 | if (ret) { | |
488 | dev_err(codec->dev, | |
489 | "Failed to enable supplies: %d\n", | |
490 | ret); | |
491 | return ret; | |
492 | } | |
891271c2 | 493 | regcache_sync(wm8804->regmap); |
33cf45c8 DP |
494 | } |
495 | /* power down the OSC and the PLL */ | |
496 | snd_soc_update_bits(codec, WM8804_PWRDN, 0x9, 0x9); | |
497 | break; | |
498 | case SND_SOC_BIAS_OFF: | |
499 | /* power down the OSC and the PLL */ | |
500 | snd_soc_update_bits(codec, WM8804_PWRDN, 0x9, 0x9); | |
501 | regulator_bulk_disable(ARRAY_SIZE(wm8804->supplies), | |
502 | wm8804->supplies); | |
503 | break; | |
504 | } | |
505 | ||
ce6120cc | 506 | codec->dapm.bias_level = level; |
33cf45c8 DP |
507 | return 0; |
508 | } | |
509 | ||
510 | #ifdef CONFIG_PM | |
84b315ee | 511 | static int wm8804_suspend(struct snd_soc_codec *codec) |
33cf45c8 DP |
512 | { |
513 | wm8804_set_bias_level(codec, SND_SOC_BIAS_OFF); | |
514 | return 0; | |
515 | } | |
516 | ||
517 | static int wm8804_resume(struct snd_soc_codec *codec) | |
518 | { | |
519 | wm8804_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
520 | return 0; | |
521 | } | |
522 | #else | |
523 | #define wm8804_suspend NULL | |
524 | #define wm8804_resume NULL | |
525 | #endif | |
526 | ||
527 | static int wm8804_remove(struct snd_soc_codec *codec) | |
528 | { | |
529 | struct wm8804_priv *wm8804; | |
530 | int i; | |
531 | ||
532 | wm8804 = snd_soc_codec_get_drvdata(codec); | |
533 | wm8804_set_bias_level(codec, SND_SOC_BIAS_OFF); | |
534 | ||
535 | for (i = 0; i < ARRAY_SIZE(wm8804->supplies); ++i) | |
536 | regulator_unregister_notifier(wm8804->supplies[i].consumer, | |
537 | &wm8804->disable_nb[i]); | |
538 | regulator_bulk_free(ARRAY_SIZE(wm8804->supplies), wm8804->supplies); | |
539 | return 0; | |
540 | } | |
541 | ||
542 | static int wm8804_probe(struct snd_soc_codec *codec) | |
543 | { | |
544 | struct wm8804_priv *wm8804; | |
545 | int i, id1, id2, ret; | |
546 | ||
547 | wm8804 = snd_soc_codec_get_drvdata(codec); | |
33cf45c8 | 548 | |
33cf45c8 DP |
549 | for (i = 0; i < ARRAY_SIZE(wm8804->supplies); i++) |
550 | wm8804->supplies[i].supply = wm8804_supply_names[i]; | |
551 | ||
552 | ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8804->supplies), | |
553 | wm8804->supplies); | |
554 | if (ret) { | |
555 | dev_err(codec->dev, "Failed to request supplies: %d\n", ret); | |
556 | return ret; | |
557 | } | |
558 | ||
559 | wm8804->disable_nb[0].notifier_call = wm8804_regulator_event_0; | |
560 | wm8804->disable_nb[1].notifier_call = wm8804_regulator_event_1; | |
561 | ||
562 | /* This should really be moved into the regulator core */ | |
563 | for (i = 0; i < ARRAY_SIZE(wm8804->supplies); i++) { | |
564 | ret = regulator_register_notifier(wm8804->supplies[i].consumer, | |
565 | &wm8804->disable_nb[i]); | |
566 | if (ret != 0) { | |
567 | dev_err(codec->dev, | |
568 | "Failed to register regulator notifier: %d\n", | |
569 | ret); | |
570 | } | |
571 | } | |
572 | ||
573 | ret = regulator_bulk_enable(ARRAY_SIZE(wm8804->supplies), | |
574 | wm8804->supplies); | |
575 | if (ret) { | |
576 | dev_err(codec->dev, "Failed to enable supplies: %d\n", ret); | |
577 | goto err_reg_get; | |
578 | } | |
579 | ||
580 | id1 = snd_soc_read(codec, WM8804_RST_DEVID1); | |
581 | if (id1 < 0) { | |
582 | dev_err(codec->dev, "Failed to read device ID: %d\n", id1); | |
583 | ret = id1; | |
584 | goto err_reg_enable; | |
585 | } | |
586 | ||
587 | id2 = snd_soc_read(codec, WM8804_DEVID2); | |
588 | if (id2 < 0) { | |
589 | dev_err(codec->dev, "Failed to read device ID: %d\n", id2); | |
590 | ret = id2; | |
591 | goto err_reg_enable; | |
592 | } | |
593 | ||
594 | id2 = (id2 << 8) | id1; | |
595 | ||
891271c2 | 596 | if (id2 != 0x8805) { |
33cf45c8 DP |
597 | dev_err(codec->dev, "Invalid device ID: %#x\n", id2); |
598 | ret = -EINVAL; | |
599 | goto err_reg_enable; | |
600 | } | |
601 | ||
e595b325 DP |
602 | ret = snd_soc_read(codec, WM8804_DEVREV); |
603 | if (ret < 0) { | |
604 | dev_err(codec->dev, "Failed to read device revision: %d\n", | |
605 | ret); | |
606 | goto err_reg_enable; | |
607 | } | |
608 | dev_info(codec->dev, "revision %c\n", ret + 'A'); | |
609 | ||
33cf45c8 DP |
610 | ret = wm8804_reset(codec); |
611 | if (ret < 0) { | |
612 | dev_err(codec->dev, "Failed to issue reset: %d\n", ret); | |
613 | goto err_reg_enable; | |
614 | } | |
615 | ||
616 | wm8804_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
617 | ||
33cf45c8 DP |
618 | return 0; |
619 | ||
620 | err_reg_enable: | |
621 | regulator_bulk_disable(ARRAY_SIZE(wm8804->supplies), wm8804->supplies); | |
622 | err_reg_get: | |
623 | regulator_bulk_free(ARRAY_SIZE(wm8804->supplies), wm8804->supplies); | |
624 | return ret; | |
625 | } | |
626 | ||
85e7652d | 627 | static const struct snd_soc_dai_ops wm8804_dai_ops = { |
33cf45c8 DP |
628 | .hw_params = wm8804_hw_params, |
629 | .set_fmt = wm8804_set_fmt, | |
630 | .set_sysclk = wm8804_set_sysclk, | |
631 | .set_clkdiv = wm8804_set_clkdiv, | |
632 | .set_pll = wm8804_set_pll | |
633 | }; | |
634 | ||
635 | #define WM8804_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ | |
636 | SNDRV_PCM_FMTBIT_S24_LE) | |
637 | ||
3115ae17 MB |
638 | #define WM8804_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \ |
639 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_64000 | \ | |
640 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000 | \ | |
641 | SNDRV_PCM_RATE_176400 | SNDRV_PCM_RATE_192000) | |
642 | ||
33cf45c8 | 643 | static struct snd_soc_dai_driver wm8804_dai = { |
cb13c6b3 | 644 | .name = "wm8804-spdif", |
33cf45c8 DP |
645 | .playback = { |
646 | .stream_name = "Playback", | |
647 | .channels_min = 2, | |
648 | .channels_max = 2, | |
3115ae17 | 649 | .rates = WM8804_RATES, |
33cf45c8 DP |
650 | .formats = WM8804_FORMATS, |
651 | }, | |
652 | .capture = { | |
653 | .stream_name = "Capture", | |
654 | .channels_min = 2, | |
655 | .channels_max = 2, | |
3115ae17 | 656 | .rates = WM8804_RATES, |
33cf45c8 DP |
657 | .formats = WM8804_FORMATS, |
658 | }, | |
659 | .ops = &wm8804_dai_ops, | |
660 | .symmetric_rates = 1 | |
661 | }; | |
662 | ||
663 | static struct snd_soc_codec_driver soc_codec_dev_wm8804 = { | |
664 | .probe = wm8804_probe, | |
665 | .remove = wm8804_remove, | |
666 | .suspend = wm8804_suspend, | |
667 | .resume = wm8804_resume, | |
668 | .set_bias_level = wm8804_set_bias_level, | |
eb3032f8 | 669 | .idle_bias_off = true, |
5a374524 MB |
670 | |
671 | .controls = wm8804_snd_controls, | |
672 | .num_controls = ARRAY_SIZE(wm8804_snd_controls), | |
33cf45c8 DP |
673 | }; |
674 | ||
d2dd0540 MB |
675 | static const struct of_device_id wm8804_of_match[] = { |
676 | { .compatible = "wlf,wm8804", }, | |
677 | { } | |
678 | }; | |
679 | MODULE_DEVICE_TABLE(of, wm8804_of_match); | |
680 | ||
891271c2 MB |
681 | static struct regmap_config wm8804_regmap_config = { |
682 | .reg_bits = 8, | |
683 | .val_bits = 8, | |
684 | ||
685 | .max_register = WM8804_MAX_REGISTER, | |
686 | .volatile_reg = wm8804_volatile, | |
687 | ||
688 | .cache_type = REGCACHE_RBTREE, | |
689 | .reg_defaults = wm8804_reg_defaults, | |
690 | .num_reg_defaults = ARRAY_SIZE(wm8804_reg_defaults), | |
691 | }; | |
692 | ||
33cf45c8 | 693 | #if defined(CONFIG_SPI_MASTER) |
7a79e94e | 694 | static int wm8804_spi_probe(struct spi_device *spi) |
33cf45c8 DP |
695 | { |
696 | struct wm8804_priv *wm8804; | |
697 | int ret; | |
698 | ||
f649f1a8 | 699 | wm8804 = devm_kzalloc(&spi->dev, sizeof *wm8804, GFP_KERNEL); |
fe3e2e7f DC |
700 | if (!wm8804) |
701 | return -ENOMEM; | |
33cf45c8 | 702 | |
9bb6e95e | 703 | wm8804->regmap = devm_regmap_init_spi(spi, &wm8804_regmap_config); |
891271c2 MB |
704 | if (IS_ERR(wm8804->regmap)) { |
705 | ret = PTR_ERR(wm8804->regmap); | |
706 | return ret; | |
707 | } | |
708 | ||
33cf45c8 DP |
709 | spi_set_drvdata(spi, wm8804); |
710 | ||
711 | ret = snd_soc_register_codec(&spi->dev, | |
712 | &soc_codec_dev_wm8804, &wm8804_dai, 1); | |
f649f1a8 | 713 | |
33cf45c8 DP |
714 | return ret; |
715 | } | |
716 | ||
7a79e94e | 717 | static int wm8804_spi_remove(struct spi_device *spi) |
33cf45c8 DP |
718 | { |
719 | snd_soc_unregister_codec(&spi->dev); | |
33cf45c8 DP |
720 | return 0; |
721 | } | |
722 | ||
723 | static struct spi_driver wm8804_spi_driver = { | |
724 | .driver = { | |
725 | .name = "wm8804", | |
726 | .owner = THIS_MODULE, | |
d2dd0540 | 727 | .of_match_table = wm8804_of_match, |
33cf45c8 DP |
728 | }, |
729 | .probe = wm8804_spi_probe, | |
7a79e94e | 730 | .remove = wm8804_spi_remove |
33cf45c8 DP |
731 | }; |
732 | #endif | |
733 | ||
f3f9a60f | 734 | #if IS_ENABLED(CONFIG_I2C) |
7a79e94e BP |
735 | static int wm8804_i2c_probe(struct i2c_client *i2c, |
736 | const struct i2c_device_id *id) | |
33cf45c8 DP |
737 | { |
738 | struct wm8804_priv *wm8804; | |
739 | int ret; | |
740 | ||
f649f1a8 | 741 | wm8804 = devm_kzalloc(&i2c->dev, sizeof *wm8804, GFP_KERNEL); |
fe3e2e7f DC |
742 | if (!wm8804) |
743 | return -ENOMEM; | |
33cf45c8 | 744 | |
9bb6e95e | 745 | wm8804->regmap = devm_regmap_init_i2c(i2c, &wm8804_regmap_config); |
f320515a AL |
746 | if (IS_ERR(wm8804->regmap)) { |
747 | ret = PTR_ERR(wm8804->regmap); | |
748 | return ret; | |
749 | } | |
750 | ||
33cf45c8 DP |
751 | i2c_set_clientdata(i2c, wm8804); |
752 | ||
753 | ret = snd_soc_register_codec(&i2c->dev, | |
754 | &soc_codec_dev_wm8804, &wm8804_dai, 1); | |
33cf45c8 DP |
755 | return ret; |
756 | } | |
757 | ||
7a79e94e | 758 | static int wm8804_i2c_remove(struct i2c_client *i2c) |
33cf45c8 | 759 | { |
891271c2 | 760 | snd_soc_unregister_codec(&i2c->dev); |
33cf45c8 DP |
761 | return 0; |
762 | } | |
763 | ||
764 | static const struct i2c_device_id wm8804_i2c_id[] = { | |
765 | { "wm8804", 0 }, | |
766 | { } | |
767 | }; | |
768 | MODULE_DEVICE_TABLE(i2c, wm8804_i2c_id); | |
769 | ||
770 | static struct i2c_driver wm8804_i2c_driver = { | |
771 | .driver = { | |
772 | .name = "wm8804", | |
773 | .owner = THIS_MODULE, | |
d2dd0540 | 774 | .of_match_table = wm8804_of_match, |
33cf45c8 DP |
775 | }, |
776 | .probe = wm8804_i2c_probe, | |
7a79e94e | 777 | .remove = wm8804_i2c_remove, |
33cf45c8 DP |
778 | .id_table = wm8804_i2c_id |
779 | }; | |
780 | #endif | |
781 | ||
782 | static int __init wm8804_modinit(void) | |
783 | { | |
784 | int ret = 0; | |
785 | ||
f3f9a60f | 786 | #if IS_ENABLED(CONFIG_I2C) |
33cf45c8 DP |
787 | ret = i2c_add_driver(&wm8804_i2c_driver); |
788 | if (ret) { | |
789 | printk(KERN_ERR "Failed to register wm8804 I2C driver: %d\n", | |
790 | ret); | |
791 | } | |
792 | #endif | |
793 | #if defined(CONFIG_SPI_MASTER) | |
794 | ret = spi_register_driver(&wm8804_spi_driver); | |
795 | if (ret != 0) { | |
796 | printk(KERN_ERR "Failed to register wm8804 SPI driver: %d\n", | |
797 | ret); | |
798 | } | |
799 | #endif | |
800 | return ret; | |
801 | } | |
802 | module_init(wm8804_modinit); | |
803 | ||
804 | static void __exit wm8804_exit(void) | |
805 | { | |
f3f9a60f | 806 | #if IS_ENABLED(CONFIG_I2C) |
33cf45c8 DP |
807 | i2c_del_driver(&wm8804_i2c_driver); |
808 | #endif | |
809 | #if defined(CONFIG_SPI_MASTER) | |
810 | spi_unregister_driver(&wm8804_spi_driver); | |
811 | #endif | |
812 | } | |
813 | module_exit(wm8804_exit); | |
814 | ||
815 | MODULE_DESCRIPTION("ASoC WM8804 driver"); | |
816 | MODULE_AUTHOR("Dimitris Papastamos <dp@opensource.wolfsonmicro.com>"); | |
817 | MODULE_LICENSE("GPL"); |