projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
ASoC: Fix warning in wm9705
[deliverable/linux.git] / sound / soc / codecs / wm8580.c
CommitLineData
e88ba015
MB		 1/*
2 * wm8580.c -- WM8580 ALSA Soc Audio driver
3 *
6f7cb44b 4 * Copyright 2008, 2009 Wolfson Microelectronics PLC.
e88ba015
MB		 5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2 of the License, or (at your
9 * option) any later version.
10 *
11 * Notes:
12 * The WM8580 is a multichannel codec with S/PDIF support, featuring six
13 * DAC channels and two ADC channels.
14 *
15 * Currently only the primary audio interface is supported - S/PDIF and
16 * the secondary audio interfaces are not.
17 */
18
19#include <linux/module.h>
20#include <linux/moduleparam.h>
e88ba015
MB		 21#include <linux/kernel.h>
22#include <linux/init.h>
23#include <linux/delay.h>
24#include <linux/pm.h>
25#include <linux/i2c.h>
26#include <linux/platform_device.h>
27#include <sound/core.h>
28#include <sound/pcm.h>
29#include <sound/pcm_params.h>
30#include <sound/soc.h>
31#include <sound/soc-dapm.h>
32#include <sound/tlv.h>
33#include <sound/initval.h>
34#include <asm/div64.h>
35
36#include "wm8580.h"
37
e88ba015
MB		 38/* WM8580 register space */
39#define WM8580_PLLA1 0x00
40#define WM8580_PLLA2 0x01
41#define WM8580_PLLA3 0x02
42#define WM8580_PLLA4 0x03
43#define WM8580_PLLB1 0x04
44#define WM8580_PLLB2 0x05
45#define WM8580_PLLB3 0x06
46#define WM8580_PLLB4 0x07
47#define WM8580_CLKSEL 0x08
48#define WM8580_PAIF1 0x09
49#define WM8580_PAIF2 0x0A
50#define WM8580_SAIF1 0x0B
51#define WM8580_PAIF3 0x0C
52#define WM8580_PAIF4 0x0D
53#define WM8580_SAIF2 0x0E
54#define WM8580_DAC_CONTROL1 0x0F
55#define WM8580_DAC_CONTROL2 0x10
56#define WM8580_DAC_CONTROL3 0x11
57#define WM8580_DAC_CONTROL4 0x12
58#define WM8580_DAC_CONTROL5 0x13
59#define WM8580_DIGITAL_ATTENUATION_DACL1 0x14
60#define WM8580_DIGITAL_ATTENUATION_DACR1 0x15
61#define WM8580_DIGITAL_ATTENUATION_DACL2 0x16
62#define WM8580_DIGITAL_ATTENUATION_DACR2 0x17
63#define WM8580_DIGITAL_ATTENUATION_DACL3 0x18
64#define WM8580_DIGITAL_ATTENUATION_DACR3 0x19
65#define WM8580_MASTER_DIGITAL_ATTENUATION 0x1C
66#define WM8580_ADC_CONTROL1 0x1D
67#define WM8580_SPDTXCHAN0 0x1E
68#define WM8580_SPDTXCHAN1 0x1F
69#define WM8580_SPDTXCHAN2 0x20
70#define WM8580_SPDTXCHAN3 0x21
71#define WM8580_SPDTXCHAN4 0x22
72#define WM8580_SPDTXCHAN5 0x23
73#define WM8580_SPDMODE 0x24
74#define WM8580_INTMASK 0x25
75#define WM8580_GPO1 0x26
76#define WM8580_GPO2 0x27
77#define WM8580_GPO3 0x28
78#define WM8580_GPO4 0x29
79#define WM8580_GPO5 0x2A
80#define WM8580_INTSTAT 0x2B
81#define WM8580_SPDRXCHAN1 0x2C
82#define WM8580_SPDRXCHAN2 0x2D
83#define WM8580_SPDRXCHAN3 0x2E
84#define WM8580_SPDRXCHAN4 0x2F
85#define WM8580_SPDRXCHAN5 0x30
86#define WM8580_SPDSTAT 0x31
87#define WM8580_PWRDN1 0x32
88#define WM8580_PWRDN2 0x33
89#define WM8580_READBACK 0x34
90#define WM8580_RESET 0x35
91
6f7cb44b
MB		 92#define WM8580_MAX_REGISTER 0x35
93
e88ba015
MB		 94/* PLLB4 (register 7h) */
95#define WM8580_PLLB4_MCLKOUTSRC_MASK 0x60
96#define WM8580_PLLB4_MCLKOUTSRC_PLLA 0x20
97#define WM8580_PLLB4_MCLKOUTSRC_PLLB 0x40
98#define WM8580_PLLB4_MCLKOUTSRC_OSC 0x60
99
100#define WM8580_PLLB4_CLKOUTSRC_MASK 0x180
101#define WM8580_PLLB4_CLKOUTSRC_PLLACLK 0x080
102#define WM8580_PLLB4_CLKOUTSRC_PLLBCLK 0x100
103#define WM8580_PLLB4_CLKOUTSRC_OSCCLK 0x180
104
105/* CLKSEL (register 8h) */
106#define WM8580_CLKSEL_DAC_CLKSEL_MASK 0x03
107#define WM8580_CLKSEL_DAC_CLKSEL_PLLA 0x01
108#define WM8580_CLKSEL_DAC_CLKSEL_PLLB 0x02
109
110/* AIF control 1 (registers 9h-bh) */
111#define WM8580_AIF_RATE_MASK 0x7
112#define WM8580_AIF_RATE_128 0x0
113#define WM8580_AIF_RATE_192 0x1
114#define WM8580_AIF_RATE_256 0x2
115#define WM8580_AIF_RATE_384 0x3
116#define WM8580_AIF_RATE_512 0x4
117#define WM8580_AIF_RATE_768 0x5
118#define WM8580_AIF_RATE_1152 0x6
119
120#define WM8580_AIF_BCLKSEL_MASK 0x18
121#define WM8580_AIF_BCLKSEL_64 0x00
122#define WM8580_AIF_BCLKSEL_128 0x08
123#define WM8580_AIF_BCLKSEL_256 0x10
124#define WM8580_AIF_BCLKSEL_SYSCLK 0x18
125
126#define WM8580_AIF_MS 0x20
127
128#define WM8580_AIF_CLKSRC_MASK 0xc0
129#define WM8580_AIF_CLKSRC_PLLA 0x40
130#define WM8580_AIF_CLKSRC_PLLB 0x40
131#define WM8580_AIF_CLKSRC_MCLK 0xc0
132
133/* AIF control 2 (registers ch-eh) */
134#define WM8580_AIF_FMT_MASK 0x03
135#define WM8580_AIF_FMT_RIGHTJ 0x00
136#define WM8580_AIF_FMT_LEFTJ 0x01
137#define WM8580_AIF_FMT_I2S 0x02
138#define WM8580_AIF_FMT_DSP 0x03
139
140#define WM8580_AIF_LENGTH_MASK 0x0c
141#define WM8580_AIF_LENGTH_16 0x00
142#define WM8580_AIF_LENGTH_20 0x04
143#define WM8580_AIF_LENGTH_24 0x08
144#define WM8580_AIF_LENGTH_32 0x0c
145
146#define WM8580_AIF_LRP 0x10
147#define WM8580_AIF_BCP 0x20
148
149/* Powerdown Register 1 (register 32h) */
150#define WM8580_PWRDN1_PWDN 0x001
151#define WM8580_PWRDN1_ALLDACPD 0x040
152
153/* Powerdown Register 2 (register 33h) */
154#define WM8580_PWRDN2_OSSCPD 0x001
155#define WM8580_PWRDN2_PLLAPD 0x002
156#define WM8580_PWRDN2_PLLBPD 0x004
157#define WM8580_PWRDN2_SPDIFPD 0x008
158#define WM8580_PWRDN2_SPDIFTXD 0x010
159#define WM8580_PWRDN2_SPDIFRXD 0x020
160
161#define WM8580_DAC_CONTROL5_MUTEALL 0x10
162
163/*
164 * wm8580 register cache
165 * We can't read the WM8580 register space when we
166 * are using 2 wire for device control, so we cache them instead.
167 */
168static const u16 wm8580_reg[] = {
169 0x0121, 0x017e, 0x007d, 0x0014, /*R3*/
170 0x0121, 0x017e, 0x007d, 0x0194, /*R7*/
171 0x001c, 0x0002, 0x0002, 0x00c2, /*R11*/
172 0x0182, 0x0082, 0x000a, 0x0024, /*R15*/
173 0x0009, 0x0000, 0x00ff, 0x0000, /*R19*/
174 0x00ff, 0x00ff, 0x00ff, 0x00ff, /*R23*/
175 0x00ff, 0x00ff, 0x00ff, 0x00ff, /*R27*/
176 0x01f0, 0x0040, 0x0000, 0x0000, /*R31(0x1F)*/
177 0x0000, 0x0000, 0x0031, 0x000b, /*R35*/
178 0x0039, 0x0000, 0x0010, 0x0032, /*R39*/
179 0x0054, 0x0076, 0x0098, 0x0000, /*R43(0x2B)*/
180 0x0000, 0x0000, 0x0000, 0x0000, /*R47*/
181 0x0000, 0x0000, 0x005e, 0x003e, /*R51(0x33)*/
182 0x0000, 0x0000 /*R53*/
183};
184
6f7cb44b
MB		 185struct pll_state {
186 unsigned int in;
187 unsigned int out;
188};
189
190/* codec private data */
191struct wm8580_priv {
192 struct snd_soc_codec codec;
193 u16 reg_cache[WM8580_MAX_REGISTER + 1];
194 struct pll_state a;
195 struct pll_state b;
196};
197
198
e88ba015
MB		 199/*
200 * read wm8580 register cache
201 */
202static inline unsigned int wm8580_read_reg_cache(struct snd_soc_codec *codec,
203 unsigned int reg)
204{
205 u16 *cache = codec->reg_cache;
91432e97 206 BUG_ON(reg >= ARRAY_SIZE(wm8580_reg));
e88ba015
MB		 207 return cache[reg];
208}
209
210/*
211 * write wm8580 register cache
212 */
213static inline void wm8580_write_reg_cache(struct snd_soc_codec *codec,
214 unsigned int reg, unsigned int value)
215{
216 u16 *cache = codec->reg_cache;
217
218 cache[reg] = value;
219}
220
221/*
222 * write to the WM8580 register space
223 */
224static int wm8580_write(struct snd_soc_codec *codec, unsigned int reg,
225 unsigned int value)
226{
227 u8 data[2];
228
91432e97 229 BUG_ON(reg >= ARRAY_SIZE(wm8580_reg));
e88ba015
MB		 230
231 /* Registers are 9 bits wide */
232 value &= 0x1ff;
233
234 switch (reg) {
235 case WM8580_RESET:
236 /* Uncached */
237 break;
238 default:
239 if (value == wm8580_read_reg_cache(codec, reg))
240 return 0;
241 }
242
243 /* data is
244 * D15..D9 WM8580 register offset
245 * D8...D0 register data
246 */
247 data[0] = (reg << 1) | ((value >> 8) & 0x0001);
248 data[1] = value & 0x00ff;
249
250 wm8580_write_reg_cache(codec, reg, value);
251 if (codec->hw_write(codec->control_data, data, 2) == 2)
252 return 0;
253 else
254 return -EIO;
255}
256
257static inline unsigned int wm8580_read(struct snd_soc_codec *codec,
258 unsigned int reg)
259{
260 switch (reg) {
261 default:
262 return wm8580_read_reg_cache(codec, reg);
263 }
264}
265
266static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
267
268static int wm8580_out_vu(struct snd_kcontrol *kcontrol,
269 struct snd_ctl_elem_value *ucontrol)
270{
271 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
272 int reg = kcontrol->private_value & 0xff;
273 int reg2 = (kcontrol->private_value >> 24) & 0xff;
274 int ret;
275 u16 val;
276
277 /* Clear the register cache so we write without VU set */
278 wm8580_write_reg_cache(codec, reg, 0);
279 wm8580_write_reg_cache(codec, reg2, 0);
280
281 ret = snd_soc_put_volsw_2r(kcontrol, ucontrol);
282 if (ret < 0)
283 return ret;
284
285 /* Now write again with the volume update bit set */
286 val = wm8580_read_reg_cache(codec, reg);
287 wm8580_write(codec, reg, val | 0x0100);
288
289 val = wm8580_read_reg_cache(codec, reg2);
290 wm8580_write(codec, reg2, val | 0x0100);
291
292 return 0;
293}
294
295#define SOC_WM8580_OUT_DOUBLE_R_TLV(xname, reg_left, reg_right, shift, max, invert, tlv_array) \
296{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
297 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
298 SNDRV_CTL_ELEM_ACCESS_READWRITE, \
299 .tlv.p = (tlv_array), \
300 .info = snd_soc_info_volsw_2r, \
301 .get = snd_soc_get_volsw_2r, .put = wm8580_out_vu, \
302 .private_value = (reg_left) | ((shift) << 8) | \
303 ((max) << 12) | ((invert) << 20) | ((reg_right) << 24) }
304
305static const struct snd_kcontrol_new wm8580_snd_controls[] = {
306SOC_WM8580_OUT_DOUBLE_R_TLV("DAC1 Playback Volume",
307 WM8580_DIGITAL_ATTENUATION_DACL1,
308 WM8580_DIGITAL_ATTENUATION_DACR1,
309 0, 0xff, 0, dac_tlv),
310SOC_WM8580_OUT_DOUBLE_R_TLV("DAC2 Playback Volume",
311 WM8580_DIGITAL_ATTENUATION_DACL2,
312 WM8580_DIGITAL_ATTENUATION_DACR2,
313 0, 0xff, 0, dac_tlv),
314SOC_WM8580_OUT_DOUBLE_R_TLV("DAC3 Playback Volume",
315 WM8580_DIGITAL_ATTENUATION_DACL3,
316 WM8580_DIGITAL_ATTENUATION_DACR3,
317 0, 0xff, 0, dac_tlv),
318
319SOC_SINGLE("DAC1 Deemphasis Switch", WM8580_DAC_CONTROL3, 0, 1, 0),
320SOC_SINGLE("DAC2 Deemphasis Switch", WM8580_DAC_CONTROL3, 1, 1, 0),
321SOC_SINGLE("DAC3 Deemphasis Switch", WM8580_DAC_CONTROL3, 2, 1, 0),
322
323SOC_DOUBLE("DAC1 Invert Switch", WM8580_DAC_CONTROL4, 0, 1, 1, 0),
324SOC_DOUBLE("DAC2 Invert Switch", WM8580_DAC_CONTROL4, 2, 3, 1, 0),
325SOC_DOUBLE("DAC3 Invert Switch", WM8580_DAC_CONTROL4, 4, 5, 1, 0),
326
327SOC_SINGLE("DAC ZC Switch", WM8580_DAC_CONTROL5, 5, 1, 0),
328SOC_SINGLE("DAC1 Switch", WM8580_DAC_CONTROL5, 0, 1, 0),
329SOC_SINGLE("DAC2 Switch", WM8580_DAC_CONTROL5, 1, 1, 0),
330SOC_SINGLE("DAC3 Switch", WM8580_DAC_CONTROL5, 2, 1, 0),
331
332SOC_DOUBLE("ADC Mute Switch", WM8580_ADC_CONTROL1, 0, 1, 1, 0),
333SOC_SINGLE("ADC High-Pass Filter Switch", WM8580_ADC_CONTROL1, 4, 1, 0),
334};
335
e88ba015
MB		 336static const struct snd_soc_dapm_widget wm8580_dapm_widgets[] = {
337SND_SOC_DAPM_DAC("DAC1", "Playback", WM8580_PWRDN1, 2, 1),
338SND_SOC_DAPM_DAC("DAC2", "Playback", WM8580_PWRDN1, 3, 1),
339SND_SOC_DAPM_DAC("DAC3", "Playback", WM8580_PWRDN1, 4, 1),
340
341SND_SOC_DAPM_OUTPUT("VOUT1L"),
342SND_SOC_DAPM_OUTPUT("VOUT1R"),
343SND_SOC_DAPM_OUTPUT("VOUT2L"),
344SND_SOC_DAPM_OUTPUT("VOUT2R"),
345SND_SOC_DAPM_OUTPUT("VOUT3L"),
346SND_SOC_DAPM_OUTPUT("VOUT3R"),
347
348SND_SOC_DAPM_ADC("ADC", "Capture", WM8580_PWRDN1, 1, 1),
349
350SND_SOC_DAPM_INPUT("AINL"),
351SND_SOC_DAPM_INPUT("AINR"),
352};
353
354static const struct snd_soc_dapm_route audio_map[] = {
355 { "VOUT1L", NULL, "DAC1" },
356 { "VOUT1R", NULL, "DAC1" },
357
358 { "VOUT2L", NULL, "DAC2" },
359 { "VOUT2R", NULL, "DAC2" },
360
361 { "VOUT3L", NULL, "DAC3" },
362 { "VOUT3R", NULL, "DAC3" },
363
364 { "ADC", NULL, "AINL" },
365 { "ADC", NULL, "AINR" },
366};
367
368static int wm8580_add_widgets(struct snd_soc_codec *codec)
369{
370 snd_soc_dapm_new_controls(codec, wm8580_dapm_widgets,
371 ARRAY_SIZE(wm8580_dapm_widgets));
372
373 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
374
375 snd_soc_dapm_new_widgets(codec);
376 return 0;
377}
378
379/* PLL divisors */
380struct _pll_div {
381 u32 prescale:1;
382 u32 postscale:1;
383 u32 freqmode:2;
384 u32 n:4;
385 u32 k:24;
386};
387
388/* The size in bits of the pll divide */
389#define FIXED_PLL_SIZE (1 << 22)
390
391/* PLL rate to output rate divisions */
392static struct {
393 unsigned int div;
394 unsigned int freqmode;
395 unsigned int postscale;
396} post_table[] = {
397 { 2, 0, 0 },
398 { 4, 0, 1 },
399 { 4, 1, 0 },
400 { 8, 1, 1 },
401 { 8, 2, 0 },
402 { 16, 2, 1 },
403 { 12, 3, 0 },
404 { 24, 3, 1 }
405};
406
407static int pll_factors(struct _pll_div *pll_div, unsigned int target,
408 unsigned int source)
409{
410 u64 Kpart;
411 unsigned int K, Ndiv, Nmod;
412 int i;
413
414 pr_debug("wm8580: PLL %dHz->%dHz\n", source, target);
415
416 /* Scale the output frequency up; the PLL should run in the
417 * region of 90-100MHz.
418 */
419 for (i = 0; i < ARRAY_SIZE(post_table); i++) {
420 if (target * post_table[i].div >= 90000000 &&
421 target * post_table[i].div <= 100000000) {
422 pll_div->freqmode = post_table[i].freqmode;
423 pll_div->postscale = post_table[i].postscale;
424 target *= post_table[i].div;
425 break;
426 }
427 }
428
429 if (i == ARRAY_SIZE(post_table)) {
430 printk(KERN_ERR "wm8580: Unable to scale output frequency "
431 "%u\n", target);
432 return -EINVAL;
433 }
434
435 Ndiv = target / source;
436
437 if (Ndiv < 5) {
438 source /= 2;
439 pll_div->prescale = 1;
440 Ndiv = target / source;
441 } else
442 pll_div->prescale = 0;
443
444 if ((Ndiv < 5) || (Ndiv > 13)) {
445 printk(KERN_ERR
446 "WM8580 N=%d outside supported range\n", Ndiv);
447 return -EINVAL;
448 }
449
450 pll_div->n = Ndiv;
451 Nmod = target % source;
452 Kpart = FIXED_PLL_SIZE * (long long)Nmod;
453
454 do_div(Kpart, source);
455
456 K = Kpart & 0xFFFFFFFF;
457
458 pll_div->k = K;
459
460 pr_debug("PLL %x.%x prescale %d freqmode %d postscale %d\n",
461 pll_div->n, pll_div->k, pll_div->prescale, pll_div->freqmode,
462 pll_div->postscale);
463
464 return 0;
465}
466
467static int wm8580_set_dai_pll(struct snd_soc_dai *codec_dai,
468 int pll_id, unsigned int freq_in, unsigned int freq_out)
469{
470 int offset;
471 struct snd_soc_codec *codec = codec_dai->codec;
472 struct wm8580_priv *wm8580 = codec->private_data;
473 struct pll_state *state;
474 struct _pll_div pll_div;
475 unsigned int reg;
476 unsigned int pwr_mask;
477 int ret;
478
479 /* GCC isn't able to work out the ifs below for initialising/using
480 * pll_div so suppress warnings.
481 */
482 memset(&pll_div, 0, sizeof(pll_div));
483
484 switch (pll_id) {
485 case WM8580_PLLA:
486 state = &wm8580->a;
487 offset = 0;
488 pwr_mask = WM8580_PWRDN2_PLLAPD;
489 break;
490 case WM8580_PLLB:
491 state = &wm8580->b;
492 offset = 4;
493 pwr_mask = WM8580_PWRDN2_PLLBPD;
494 break;
495 default:
496 return -ENODEV;
497 }
498
499 if (freq_in && freq_out) {
500 ret = pll_factors(&pll_div, freq_out, freq_in);
501 if (ret != 0)
502 return ret;
503 }
504
505 state->in = freq_in;
506 state->out = freq_out;
507
508 /* Always disable the PLL - it is not safe to leave it running
509 * while reprogramming it.
510 */
511 reg = wm8580_read(codec, WM8580_PWRDN2);
512 wm8580_write(codec, WM8580_PWRDN2, reg | pwr_mask);
513
514 if (!freq_in || !freq_out)
515 return 0;
516
517 wm8580_write(codec, WM8580_PLLA1 + offset, pll_div.k & 0x1ff);
518 wm8580_write(codec, WM8580_PLLA2 + offset, (pll_div.k >> 9) & 0xff);
519 wm8580_write(codec, WM8580_PLLA3 + offset,
520 (pll_div.k >> 18 & 0xf) | (pll_div.n << 4));
521
522 reg = wm8580_read(codec, WM8580_PLLA4 + offset);
523 reg &= ~0x3f;
524 reg |= pll_div.prescale | pll_div.postscale << 1 |
525 pll_div.freqmode << 4;
526
527 wm8580_write(codec, WM8580_PLLA4 + offset, reg);
528
529 /* All done, turn it on */
530 reg = wm8580_read(codec, WM8580_PWRDN2);
531 wm8580_write(codec, WM8580_PWRDN2, reg & ~pwr_mask);
532
533 return 0;
534}
535
536/*
537 * Set PCM DAI bit size and sample rate.
538 */
539static int wm8580_paif_hw_params(struct snd_pcm_substream *substream,
dee89c4d
MB		 540 struct snd_pcm_hw_params *params,
541 struct snd_soc_dai *dai)
e88ba015
MB		 542{
543 struct snd_soc_pcm_runtime *rtd = substream->private_data;
e88ba015 544 struct snd_soc_device *socdev = rtd->socdev;
6627a653 545 struct snd_soc_codec *codec = socdev->card->codec;
dee89c4d 546 u16 paifb = wm8580_read(codec, WM8580_PAIF3 + dai->id);
e88ba015
MB		 547
548 paifb &= ~WM8580_AIF_LENGTH_MASK;
549 /* bit size */
550 switch (params_format(params)) {
551 case SNDRV_PCM_FORMAT_S16_LE:
552 break;
553 case SNDRV_PCM_FORMAT_S20_3LE:
554 paifb |= WM8580_AIF_LENGTH_20;
555 break;
556 case SNDRV_PCM_FORMAT_S24_LE:
557 paifb |= WM8580_AIF_LENGTH_24;
558 break;
559 case SNDRV_PCM_FORMAT_S32_LE:
560 paifb |= WM8580_AIF_LENGTH_24;
561 break;
562 default:
563 return -EINVAL;
564 }
565
dee89c4d 566 wm8580_write(codec, WM8580_PAIF3 + dai->id, paifb);
e88ba015
MB		 567 return 0;
568}
569
570static int wm8580_set_paif_dai_fmt(struct snd_soc_dai *codec_dai,
571 unsigned int fmt)
572{
573 struct snd_soc_codec *codec = codec_dai->codec;
574 unsigned int aifa;
575 unsigned int aifb;
576 int can_invert_lrclk;
577
578 aifa = wm8580_read(codec, WM8580_PAIF1 + codec_dai->id);
579 aifb = wm8580_read(codec, WM8580_PAIF3 + codec_dai->id);
580
581 aifb &= ~(WM8580_AIF_FMT_MASK | WM8580_AIF_LRP | WM8580_AIF_BCP);
582
583 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
584 case SND_SOC_DAIFMT_CBS_CFS:
585 aifa &= ~WM8580_AIF_MS;
586 break;
587 case SND_SOC_DAIFMT_CBM_CFM:
588 aifa |= WM8580_AIF_MS;
589 break;
590 default:
591 return -EINVAL;
592 }
593
594 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
595 case SND_SOC_DAIFMT_I2S:
596 can_invert_lrclk = 1;
597 aifb |= WM8580_AIF_FMT_I2S;
598 break;
599 case SND_SOC_DAIFMT_RIGHT_J:
600 can_invert_lrclk = 1;
601 aifb |= WM8580_AIF_FMT_RIGHTJ;
602 break;
603 case SND_SOC_DAIFMT_LEFT_J:
604 can_invert_lrclk = 1;
605 aifb |= WM8580_AIF_FMT_LEFTJ;
606 break;
607 case SND_SOC_DAIFMT_DSP_A:
608 can_invert_lrclk = 0;
609 aifb |= WM8580_AIF_FMT_DSP;
610 break;
611 case SND_SOC_DAIFMT_DSP_B:
612 can_invert_lrclk = 0;
613 aifb |= WM8580_AIF_FMT_DSP;
614 aifb |= WM8580_AIF_LRP;
615 break;
616 default:
617 return -EINVAL;
618 }
619
620 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
621 case SND_SOC_DAIFMT_NB_NF:
622 break;
623
624 case SND_SOC_DAIFMT_IB_IF:
625 if (!can_invert_lrclk)
626 return -EINVAL;
627 aifb |= WM8580_AIF_BCP;
628 aifb |= WM8580_AIF_LRP;
629 break;
630
631 case SND_SOC_DAIFMT_IB_NF:
632 aifb |= WM8580_AIF_BCP;
633 break;
634
635 case SND_SOC_DAIFMT_NB_IF:
636 if (!can_invert_lrclk)
637 return -EINVAL;
638 aifb |= WM8580_AIF_LRP;
639 break;
640
641 default:
642 return -EINVAL;
643 }
644
645 wm8580_write(codec, WM8580_PAIF1 + codec_dai->id, aifa);
646 wm8580_write(codec, WM8580_PAIF3 + codec_dai->id, aifb);
647
648 return 0;
649}
650
651static int wm8580_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
652 int div_id, int div)
653{
654 struct snd_soc_codec *codec = codec_dai->codec;
655 unsigned int reg;
656
657 switch (div_id) {
658 case WM8580_MCLK:
659 reg = wm8580_read(codec, WM8580_PLLB4);
660 reg &= ~WM8580_PLLB4_MCLKOUTSRC_MASK;
661
662 switch (div) {
663 case WM8580_CLKSRC_MCLK:
664 /* Input */
665 break;
666
667 case WM8580_CLKSRC_PLLA:
668 reg |= WM8580_PLLB4_MCLKOUTSRC_PLLA;
669 break;
670 case WM8580_CLKSRC_PLLB:
671 reg |= WM8580_PLLB4_MCLKOUTSRC_PLLB;
672 break;
673
674 case WM8580_CLKSRC_OSC:
675 reg |= WM8580_PLLB4_MCLKOUTSRC_OSC;
676 break;
677
678 default:
679 return -EINVAL;
680 }
681 wm8580_write(codec, WM8580_PLLB4, reg);
682 break;
683
684 case WM8580_DAC_CLKSEL:
685 reg = wm8580_read(codec, WM8580_CLKSEL);
686 reg &= ~WM8580_CLKSEL_DAC_CLKSEL_MASK;
687
688 switch (div) {
689 case WM8580_CLKSRC_MCLK:
690 break;
691
692 case WM8580_CLKSRC_PLLA:
693 reg |= WM8580_CLKSEL_DAC_CLKSEL_PLLA;
694 break;
695
696 case WM8580_CLKSRC_PLLB:
697 reg |= WM8580_CLKSEL_DAC_CLKSEL_PLLB;
698 break;
699
700 default:
701 return -EINVAL;
702 }
703 wm8580_write(codec, WM8580_CLKSEL, reg);
704 break;
705
706 case WM8580_CLKOUTSRC:
707 reg = wm8580_read(codec, WM8580_PLLB4);
708 reg &= ~WM8580_PLLB4_CLKOUTSRC_MASK;
709
710 switch (div) {
711 case WM8580_CLKSRC_NONE:
712 break;
713
714 case WM8580_CLKSRC_PLLA:
715 reg |= WM8580_PLLB4_CLKOUTSRC_PLLACLK;
716 break;
717
718 case WM8580_CLKSRC_PLLB:
719 reg |= WM8580_PLLB4_CLKOUTSRC_PLLBCLK;
720 break;
721
722 case WM8580_CLKSRC_OSC:
723 reg |= WM8580_PLLB4_CLKOUTSRC_OSCCLK;
724 break;
725
726 default:
727 return -EINVAL;
728 }
729 wm8580_write(codec, WM8580_PLLB4, reg);
730 break;
731
732 default:
733 return -EINVAL;
734 }
735
736 return 0;
737}
738
739static int wm8580_digital_mute(struct snd_soc_dai *codec_dai, int mute)
740{
741 struct snd_soc_codec *codec = codec_dai->codec;
742 unsigned int reg;
743
744 reg = wm8580_read(codec, WM8580_DAC_CONTROL5);
745
746 if (mute)
747 reg |= WM8580_DAC_CONTROL5_MUTEALL;
748 else
749 reg &= ~WM8580_DAC_CONTROL5_MUTEALL;
750
751 wm8580_write(codec, WM8580_DAC_CONTROL5, reg);
752
753 return 0;
754}
755
756static int wm8580_set_bias_level(struct snd_soc_codec *codec,
757 enum snd_soc_bias_level level)
758{
759 u16 reg;
760 switch (level) {
761 case SND_SOC_BIAS_ON:
762 case SND_SOC_BIAS_PREPARE:
6f7cb44b
MB		 763 break;
764
e88ba015 765 case SND_SOC_BIAS_STANDBY:
6f7cb44b
MB		 766 if (codec->bias_level == SND_SOC_BIAS_OFF) {
767 /* Power up and get individual control of the DACs */
768 reg = wm8580_read(codec, WM8580_PWRDN1);
769 reg &= ~(WM8580_PWRDN1_PWDN | WM8580_PWRDN1_ALLDACPD);
770 wm8580_write(codec, WM8580_PWRDN1, reg);
771
772 /* Make VMID high impedence */
773 reg = wm8580_read(codec, WM8580_ADC_CONTROL1);
774 reg &= ~0x100;
775 wm8580_write(codec, WM8580_ADC_CONTROL1, reg);
776 }
e88ba015 777 break;
6f7cb44b 778
e88ba015
MB		 779 case SND_SOC_BIAS_OFF:
780 reg = wm8580_read(codec, WM8580_PWRDN1);
781 wm8580_write(codec, WM8580_PWRDN1, reg | WM8580_PWRDN1_PWDN);
782 break;
783 }
784 codec->bias_level = level;
785 return 0;
786}
787
788#define WM8580_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
789 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
790
6335d055
EM		 791static struct snd_soc_dai_ops wm8580_dai_ops_playback = {
792 .hw_params = wm8580_paif_hw_params,
793 .set_fmt = wm8580_set_paif_dai_fmt,
794 .set_clkdiv = wm8580_set_dai_clkdiv,
795 .set_pll = wm8580_set_dai_pll,
796 .digital_mute = wm8580_digital_mute,
797};
798
799static struct snd_soc_dai_ops wm8580_dai_ops_capture = {
800 .hw_params = wm8580_paif_hw_params,
801 .set_fmt = wm8580_set_paif_dai_fmt,
802 .set_clkdiv = wm8580_set_dai_clkdiv,
803 .set_pll = wm8580_set_dai_pll,
804};
805
e88ba015
MB		 806struct snd_soc_dai wm8580_dai[] = {
807 {
808 .name = "WM8580 PAIFRX",
809 .id = 0,
810 .playback = {
811 .stream_name = "Playback",
812 .channels_min = 1,
813 .channels_max = 6,
814 .rates = SNDRV_PCM_RATE_8000_192000,
815 .formats = WM8580_FORMATS,
816 },
6335d055 817 .ops = &wm8580_dai_ops_playback,
e88ba015
MB		 818 },
819 {
820 .name = "WM8580 PAIFTX",
821 .id = 1,
822 .capture = {
823 .stream_name = "Capture",
824 .channels_min = 2,
825 .channels_max = 2,
826 .rates = SNDRV_PCM_RATE_8000_192000,
827 .formats = WM8580_FORMATS,
828 },
6335d055 829 .ops = &wm8580_dai_ops_capture,
e88ba015
MB		 830 },
831};
832EXPORT_SYMBOL_GPL(wm8580_dai);
833
6f7cb44b
MB		 834static struct snd_soc_codec *wm8580_codec;
835
836static int wm8580_probe(struct platform_device *pdev)
e88ba015 837{
6f7cb44b
MB		 838 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
839 struct snd_soc_codec *codec;
e88ba015
MB		 840 int ret = 0;
841
6f7cb44b
MB		 842 if (wm8580_codec == NULL) {
843 dev_err(&pdev->dev, "Codec device not registered\n");
844 return -ENODEV;
845 }
e88ba015 846
6f7cb44b
MB		 847 socdev->card->codec = wm8580_codec;
848 codec = wm8580_codec;
e88ba015
MB		 849
850 /* register pcms */
6f7cb44b 851 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
e88ba015 852 if (ret < 0) {
6f7cb44b 853 dev_err(codec->dev, "failed to create pcms: %d\n", ret);
e88ba015
MB		 854 goto pcm_err;
855 }
856
3e8e1952 857 snd_soc_add_controls(codec, wm8580_snd_controls,
6f7cb44b 858 ARRAY_SIZE(wm8580_snd_controls));
e88ba015 859 wm8580_add_widgets(codec);
968a6025 860 ret = snd_soc_init_card(socdev);
e88ba015 861 if (ret < 0) {
6f7cb44b 862 dev_err(codec->dev, "failed to register card: %d\n", ret);
e88ba015
MB		 863 goto card_err;
864 }
6f7cb44b 865
e88ba015
MB		 866 return ret;
867
868card_err:
869 snd_soc_free_pcms(socdev);
870 snd_soc_dapm_free(socdev);
871pcm_err:
e88ba015
MB		 872 return ret;
873}
874
6f7cb44b
MB		 875/* power down chip */
876static int wm8580_remove(struct platform_device *pdev)
877{
878 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
e88ba015 879
6f7cb44b
MB		 880 snd_soc_free_pcms(socdev);
881 snd_soc_dapm_free(socdev);
e88ba015 882
6f7cb44b
MB		 883 return 0;
884}
885
886struct snd_soc_codec_device soc_codec_dev_wm8580 = {
887 .probe = wm8580_probe,
888 .remove = wm8580_remove,
889};
890EXPORT_SYMBOL_GPL(soc_codec_dev_wm8580);
891
892static int wm8580_register(struct wm8580_priv *wm8580)
893{
894 int ret, i;
895 struct snd_soc_codec *codec = &wm8580->codec;
896
897 if (wm8580_codec) {
898 dev_err(codec->dev, "Another WM8580 is registered\n");
899 ret = -EINVAL;
900 goto err;
901 }
902
903 mutex_init(&codec->mutex);
904 INIT_LIST_HEAD(&codec->dapm_widgets);
905 INIT_LIST_HEAD(&codec->dapm_paths);
906
907 codec->private_data = wm8580;
908 codec->name = "WM8580";
909 codec->owner = THIS_MODULE;
910 codec->read = wm8580_read_reg_cache;
911 codec->write = wm8580_write;
912 codec->bias_level = SND_SOC_BIAS_OFF;
913 codec->set_bias_level = wm8580_set_bias_level;
914 codec->dai = wm8580_dai;
915 codec->num_dai = ARRAY_SIZE(wm8580_dai);
916 codec->reg_cache_size = ARRAY_SIZE(wm8580->reg_cache);
917 codec->reg_cache = &wm8580->reg_cache;
918
919 memcpy(codec->reg_cache, wm8580_reg, sizeof(wm8580_reg));
920
921 /* Get the codec into a known state */
922 ret = wm8580_write(codec, WM8580_RESET, 0);
923 if (ret != 0) {
924 dev_err(codec->dev, "Failed to reset codec: %d\n", ret);
925 goto err;
926 }
927
928 for (i = 0; i < ARRAY_SIZE(wm8580_dai); i++)
929 wm8580_dai[i].dev = codec->dev;
930
931 wm8580_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
e88ba015 932
6f7cb44b
MB		 933 wm8580_codec = codec;
934
935 ret = snd_soc_register_codec(codec);
936 if (ret != 0) {
937 dev_err(codec->dev, "Failed to register codec: %d\n", ret);
938 goto err;
939 }
940
941 ret = snd_soc_register_dais(wm8580_dai, ARRAY_SIZE(wm8580_dai));
942 if (ret != 0) {
943 dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
944 goto err_codec;
945 }
946
947 return 0;
948
949err_codec:
950 snd_soc_unregister_codec(codec);
951err:
952 kfree(wm8580);
953 return ret;
954}
955
956static void wm8580_unregister(struct wm8580_priv *wm8580)
957{
958 wm8580_set_bias_level(&wm8580->codec, SND_SOC_BIAS_OFF);
959 snd_soc_unregister_dais(wm8580_dai, ARRAY_SIZE(wm8580_dai));
960 snd_soc_unregister_codec(&wm8580->codec);
961 kfree(wm8580);
962 wm8580_codec = NULL;
963}
964
965#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
17be5522
JD		 966static int wm8580_i2c_probe(struct i2c_client *i2c,
967 const struct i2c_device_id *id)
e88ba015 968{
6f7cb44b
MB		 969 struct wm8580_priv *wm8580;
970 struct snd_soc_codec *codec;
971
972 wm8580 = kzalloc(sizeof(struct wm8580_priv), GFP_KERNEL);
973 if (wm8580 == NULL)
974 return -ENOMEM;
975
976 codec = &wm8580->codec;
977 codec->hw_write = (hw_write_t)i2c_master_send;
e88ba015 978
6f7cb44b 979 i2c_set_clientdata(i2c, wm8580);
e88ba015
MB		 980 codec->control_data = i2c;
981
6f7cb44b
MB		 982 codec->dev = &i2c->dev;
983
984 return wm8580_register(wm8580);
e88ba015
MB		 985}
986
17be5522 987static int wm8580_i2c_remove(struct i2c_client *client)
e88ba015 988{
6f7cb44b
MB		 989 struct wm8580_priv *wm8580 = i2c_get_clientdata(client);
990 wm8580_unregister(wm8580);
e88ba015
MB		 991 return 0;
992}
993
17be5522
JD		 994static const struct i2c_device_id wm8580_i2c_id[] = {
995 { "wm8580", 0 },
996 { }
997};
998MODULE_DEVICE_TABLE(i2c, wm8580_i2c_id);
e88ba015 999
e88ba015
MB		 1000static struct i2c_driver wm8580_i2c_driver = {
1001 .driver = {
6f7cb44b 1002 .name = "wm8580",
e88ba015
MB		 1003 .owner = THIS_MODULE,
1004 },
17be5522
JD		 1005 .probe = wm8580_i2c_probe,
1006 .remove = wm8580_i2c_remove,
1007 .id_table = wm8580_i2c_id,
e88ba015 1008};
6f7cb44b 1009#endif
e88ba015 1010
6f7cb44b 1011static int __init wm8580_modinit(void)
17be5522 1012{
17be5522
JD		 1013 int ret;
1014
6f7cb44b 1015#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
17be5522
JD		 1016 ret = i2c_add_driver(&wm8580_i2c_driver);
1017 if (ret != 0) {
6f7cb44b 1018 pr_err("Failed to register WM8580 I2C driver: %d\n", ret);
e88ba015 1019 }
e88ba015 1020#endif
e88ba015
MB		 1021
1022 return 0;
1023}
64089b84
MB		 1024module_init(wm8580_modinit);
1025
1026static void __exit wm8580_exit(void)
1027{
6f7cb44b
MB		 1028#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1029 i2c_del_driver(&wm8580_i2c_driver);
1030#endif
64089b84
MB		 1031}
1032module_exit(wm8580_exit);
1033
e88ba015
MB		 1034MODULE_DESCRIPTION("ASoC WM8580 driver");
1035MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
1036MODULE_LICENSE("GPL");
Linux kernel - Deliverables
This page took 0.081123 seconds and 5 git commands to generate.