Merge branch 'for-linus' of git://git.o-hand.com/linux-rpurdie-backlight
[linux-2.6] / sound / soc / codecs / wm8580.c
1 /*
2  * wm8580.c  --  WM8580 ALSA Soc Audio driver
3  *
4  * Copyright 2008 Wolfson Microelectronics PLC.
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>
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
38 #define WM8580_VERSION "0.1"
39
40 struct pll_state {
41         unsigned int in;
42         unsigned int out;
43 };
44
45 /* codec private data */
46 struct wm8580_priv {
47         struct pll_state a;
48         struct pll_state b;
49 };
50
51 /* WM8580 register space */
52 #define WM8580_PLLA1                         0x00
53 #define WM8580_PLLA2                         0x01
54 #define WM8580_PLLA3                         0x02
55 #define WM8580_PLLA4                         0x03
56 #define WM8580_PLLB1                         0x04
57 #define WM8580_PLLB2                         0x05
58 #define WM8580_PLLB3                         0x06
59 #define WM8580_PLLB4                         0x07
60 #define WM8580_CLKSEL                        0x08
61 #define WM8580_PAIF1                         0x09
62 #define WM8580_PAIF2                         0x0A
63 #define WM8580_SAIF1                         0x0B
64 #define WM8580_PAIF3                         0x0C
65 #define WM8580_PAIF4                         0x0D
66 #define WM8580_SAIF2                         0x0E
67 #define WM8580_DAC_CONTROL1                  0x0F
68 #define WM8580_DAC_CONTROL2                  0x10
69 #define WM8580_DAC_CONTROL3                  0x11
70 #define WM8580_DAC_CONTROL4                  0x12
71 #define WM8580_DAC_CONTROL5                  0x13
72 #define WM8580_DIGITAL_ATTENUATION_DACL1     0x14
73 #define WM8580_DIGITAL_ATTENUATION_DACR1     0x15
74 #define WM8580_DIGITAL_ATTENUATION_DACL2     0x16
75 #define WM8580_DIGITAL_ATTENUATION_DACR2     0x17
76 #define WM8580_DIGITAL_ATTENUATION_DACL3     0x18
77 #define WM8580_DIGITAL_ATTENUATION_DACR3     0x19
78 #define WM8580_MASTER_DIGITAL_ATTENUATION    0x1C
79 #define WM8580_ADC_CONTROL1                  0x1D
80 #define WM8580_SPDTXCHAN0                    0x1E
81 #define WM8580_SPDTXCHAN1                    0x1F
82 #define WM8580_SPDTXCHAN2                    0x20
83 #define WM8580_SPDTXCHAN3                    0x21
84 #define WM8580_SPDTXCHAN4                    0x22
85 #define WM8580_SPDTXCHAN5                    0x23
86 #define WM8580_SPDMODE                       0x24
87 #define WM8580_INTMASK                       0x25
88 #define WM8580_GPO1                          0x26
89 #define WM8580_GPO2                          0x27
90 #define WM8580_GPO3                          0x28
91 #define WM8580_GPO4                          0x29
92 #define WM8580_GPO5                          0x2A
93 #define WM8580_INTSTAT                       0x2B
94 #define WM8580_SPDRXCHAN1                    0x2C
95 #define WM8580_SPDRXCHAN2                    0x2D
96 #define WM8580_SPDRXCHAN3                    0x2E
97 #define WM8580_SPDRXCHAN4                    0x2F
98 #define WM8580_SPDRXCHAN5                    0x30
99 #define WM8580_SPDSTAT                       0x31
100 #define WM8580_PWRDN1                        0x32
101 #define WM8580_PWRDN2                        0x33
102 #define WM8580_READBACK                      0x34
103 #define WM8580_RESET                         0x35
104
105 /* PLLB4 (register 7h) */
106 #define WM8580_PLLB4_MCLKOUTSRC_MASK   0x60
107 #define WM8580_PLLB4_MCLKOUTSRC_PLLA   0x20
108 #define WM8580_PLLB4_MCLKOUTSRC_PLLB   0x40
109 #define WM8580_PLLB4_MCLKOUTSRC_OSC    0x60
110
111 #define WM8580_PLLB4_CLKOUTSRC_MASK    0x180
112 #define WM8580_PLLB4_CLKOUTSRC_PLLACLK 0x080
113 #define WM8580_PLLB4_CLKOUTSRC_PLLBCLK 0x100
114 #define WM8580_PLLB4_CLKOUTSRC_OSCCLK  0x180
115
116 /* CLKSEL (register 8h) */
117 #define WM8580_CLKSEL_DAC_CLKSEL_MASK 0x03
118 #define WM8580_CLKSEL_DAC_CLKSEL_PLLA 0x01
119 #define WM8580_CLKSEL_DAC_CLKSEL_PLLB 0x02
120
121 /* AIF control 1 (registers 9h-bh) */
122 #define WM8580_AIF_RATE_MASK       0x7
123 #define WM8580_AIF_RATE_128        0x0
124 #define WM8580_AIF_RATE_192        0x1
125 #define WM8580_AIF_RATE_256        0x2
126 #define WM8580_AIF_RATE_384        0x3
127 #define WM8580_AIF_RATE_512        0x4
128 #define WM8580_AIF_RATE_768        0x5
129 #define WM8580_AIF_RATE_1152       0x6
130
131 #define WM8580_AIF_BCLKSEL_MASK   0x18
132 #define WM8580_AIF_BCLKSEL_64     0x00
133 #define WM8580_AIF_BCLKSEL_128    0x08
134 #define WM8580_AIF_BCLKSEL_256    0x10
135 #define WM8580_AIF_BCLKSEL_SYSCLK 0x18
136
137 #define WM8580_AIF_MS             0x20
138
139 #define WM8580_AIF_CLKSRC_MASK    0xc0
140 #define WM8580_AIF_CLKSRC_PLLA    0x40
141 #define WM8580_AIF_CLKSRC_PLLB    0x40
142 #define WM8580_AIF_CLKSRC_MCLK    0xc0
143
144 /* AIF control 2 (registers ch-eh) */
145 #define WM8580_AIF_FMT_MASK    0x03
146 #define WM8580_AIF_FMT_RIGHTJ  0x00
147 #define WM8580_AIF_FMT_LEFTJ   0x01
148 #define WM8580_AIF_FMT_I2S     0x02
149 #define WM8580_AIF_FMT_DSP     0x03
150
151 #define WM8580_AIF_LENGTH_MASK   0x0c
152 #define WM8580_AIF_LENGTH_16     0x00
153 #define WM8580_AIF_LENGTH_20     0x04
154 #define WM8580_AIF_LENGTH_24     0x08
155 #define WM8580_AIF_LENGTH_32     0x0c
156
157 #define WM8580_AIF_LRP         0x10
158 #define WM8580_AIF_BCP         0x20
159
160 /* Powerdown Register 1 (register 32h) */
161 #define WM8580_PWRDN1_PWDN     0x001
162 #define WM8580_PWRDN1_ALLDACPD 0x040
163
164 /* Powerdown Register 2 (register 33h) */
165 #define WM8580_PWRDN2_OSSCPD   0x001
166 #define WM8580_PWRDN2_PLLAPD   0x002
167 #define WM8580_PWRDN2_PLLBPD   0x004
168 #define WM8580_PWRDN2_SPDIFPD  0x008
169 #define WM8580_PWRDN2_SPDIFTXD 0x010
170 #define WM8580_PWRDN2_SPDIFRXD 0x020
171
172 #define WM8580_DAC_CONTROL5_MUTEALL 0x10
173
174 /*
175  * wm8580 register cache
176  * We can't read the WM8580 register space when we
177  * are using 2 wire for device control, so we cache them instead.
178  */
179 static const u16 wm8580_reg[] = {
180         0x0121, 0x017e, 0x007d, 0x0014, /*R3*/
181         0x0121, 0x017e, 0x007d, 0x0194, /*R7*/
182         0x001c, 0x0002, 0x0002, 0x00c2, /*R11*/
183         0x0182, 0x0082, 0x000a, 0x0024, /*R15*/
184         0x0009, 0x0000, 0x00ff, 0x0000, /*R19*/
185         0x00ff, 0x00ff, 0x00ff, 0x00ff, /*R23*/
186         0x00ff, 0x00ff, 0x00ff, 0x00ff, /*R27*/
187         0x01f0, 0x0040, 0x0000, 0x0000, /*R31(0x1F)*/
188         0x0000, 0x0000, 0x0031, 0x000b, /*R35*/
189         0x0039, 0x0000, 0x0010, 0x0032, /*R39*/
190         0x0054, 0x0076, 0x0098, 0x0000, /*R43(0x2B)*/
191         0x0000, 0x0000, 0x0000, 0x0000, /*R47*/
192         0x0000, 0x0000, 0x005e, 0x003e, /*R51(0x33)*/
193         0x0000, 0x0000 /*R53*/
194 };
195
196 /*
197  * read wm8580 register cache
198  */
199 static inline unsigned int wm8580_read_reg_cache(struct snd_soc_codec *codec,
200         unsigned int reg)
201 {
202         u16 *cache = codec->reg_cache;
203         BUG_ON(reg > ARRAY_SIZE(wm8580_reg));
204         return cache[reg];
205 }
206
207 /*
208  * write wm8580 register cache
209  */
210 static inline void wm8580_write_reg_cache(struct snd_soc_codec *codec,
211         unsigned int reg, unsigned int value)
212 {
213         u16 *cache = codec->reg_cache;
214
215         cache[reg] = value;
216 }
217
218 /*
219  * write to the WM8580 register space
220  */
221 static int wm8580_write(struct snd_soc_codec *codec, unsigned int reg,
222         unsigned int value)
223 {
224         u8 data[2];
225
226         BUG_ON(reg > ARRAY_SIZE(wm8580_reg));
227
228         /* Registers are 9 bits wide */
229         value &= 0x1ff;
230
231         switch (reg) {
232         case WM8580_RESET:
233                 /* Uncached */
234                 break;
235         default:
236                 if (value == wm8580_read_reg_cache(codec, reg))
237                         return 0;
238         }
239
240         /* data is
241          *   D15..D9 WM8580 register offset
242          *   D8...D0 register data
243          */
244         data[0] = (reg << 1) | ((value >> 8) & 0x0001);
245         data[1] = value & 0x00ff;
246
247         wm8580_write_reg_cache(codec, reg, value);
248         if (codec->hw_write(codec->control_data, data, 2) == 2)
249                 return 0;
250         else
251                 return -EIO;
252 }
253
254 static inline unsigned int wm8580_read(struct snd_soc_codec *codec,
255                                        unsigned int reg)
256 {
257         switch (reg) {
258         default:
259                 return wm8580_read_reg_cache(codec, reg);
260         }
261 }
262
263 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
264
265 static int wm8580_out_vu(struct snd_kcontrol *kcontrol,
266                          struct snd_ctl_elem_value *ucontrol)
267 {
268         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
269         int reg = kcontrol->private_value & 0xff;
270         int reg2 = (kcontrol->private_value >> 24) & 0xff;
271         int ret;
272         u16 val;
273
274         /* Clear the register cache so we write without VU set */
275         wm8580_write_reg_cache(codec, reg, 0);
276         wm8580_write_reg_cache(codec, reg2, 0);
277
278         ret = snd_soc_put_volsw_2r(kcontrol, ucontrol);
279         if (ret < 0)
280                 return ret;
281
282         /* Now write again with the volume update bit set */
283         val = wm8580_read_reg_cache(codec, reg);
284         wm8580_write(codec, reg, val | 0x0100);
285
286         val = wm8580_read_reg_cache(codec, reg2);
287         wm8580_write(codec, reg2, val | 0x0100);
288
289         return 0;
290 }
291
292 #define SOC_WM8580_OUT_DOUBLE_R_TLV(xname, reg_left, reg_right, shift, max, invert, tlv_array) \
293 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
294         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
295                 SNDRV_CTL_ELEM_ACCESS_READWRITE,  \
296         .tlv.p = (tlv_array), \
297         .info = snd_soc_info_volsw_2r, \
298         .get = snd_soc_get_volsw_2r, .put = wm8580_out_vu, \
299         .private_value = (reg_left) | ((shift) << 8)  |         \
300                 ((max) << 12) | ((invert) << 20) | ((reg_right) << 24) }
301
302 static const struct snd_kcontrol_new wm8580_snd_controls[] = {
303 SOC_WM8580_OUT_DOUBLE_R_TLV("DAC1 Playback Volume",
304                             WM8580_DIGITAL_ATTENUATION_DACL1,
305                             WM8580_DIGITAL_ATTENUATION_DACR1,
306                             0, 0xff, 0, dac_tlv),
307 SOC_WM8580_OUT_DOUBLE_R_TLV("DAC2 Playback Volume",
308                             WM8580_DIGITAL_ATTENUATION_DACL2,
309                             WM8580_DIGITAL_ATTENUATION_DACR2,
310                             0, 0xff, 0, dac_tlv),
311 SOC_WM8580_OUT_DOUBLE_R_TLV("DAC3 Playback Volume",
312                             WM8580_DIGITAL_ATTENUATION_DACL3,
313                             WM8580_DIGITAL_ATTENUATION_DACR3,
314                             0, 0xff, 0, dac_tlv),
315
316 SOC_SINGLE("DAC1 Deemphasis Switch", WM8580_DAC_CONTROL3, 0, 1, 0),
317 SOC_SINGLE("DAC2 Deemphasis Switch", WM8580_DAC_CONTROL3, 1, 1, 0),
318 SOC_SINGLE("DAC3 Deemphasis Switch", WM8580_DAC_CONTROL3, 2, 1, 0),
319
320 SOC_DOUBLE("DAC1 Invert Switch", WM8580_DAC_CONTROL4,  0, 1, 1, 0),
321 SOC_DOUBLE("DAC2 Invert Switch", WM8580_DAC_CONTROL4,  2, 3, 1, 0),
322 SOC_DOUBLE("DAC3 Invert Switch", WM8580_DAC_CONTROL4,  4, 5, 1, 0),
323
324 SOC_SINGLE("DAC ZC Switch", WM8580_DAC_CONTROL5, 5, 1, 0),
325 SOC_SINGLE("DAC1 Switch", WM8580_DAC_CONTROL5, 0, 1, 0),
326 SOC_SINGLE("DAC2 Switch", WM8580_DAC_CONTROL5, 1, 1, 0),
327 SOC_SINGLE("DAC3 Switch", WM8580_DAC_CONTROL5, 2, 1, 0),
328
329 SOC_DOUBLE("ADC Mute Switch", WM8580_ADC_CONTROL1, 0, 1, 1, 0),
330 SOC_SINGLE("ADC High-Pass Filter Switch", WM8580_ADC_CONTROL1, 4, 1, 0),
331 };
332
333 /* Add non-DAPM controls */
334 static int wm8580_add_controls(struct snd_soc_codec *codec)
335 {
336         int err, i;
337
338         for (i = 0; i < ARRAY_SIZE(wm8580_snd_controls); i++) {
339                 err = snd_ctl_add(codec->card,
340                                   snd_soc_cnew(&wm8580_snd_controls[i],
341                                                codec, NULL));
342                 if (err < 0)
343                         return err;
344         }
345         return 0;
346 }
347 static const struct snd_soc_dapm_widget wm8580_dapm_widgets[] = {
348 SND_SOC_DAPM_DAC("DAC1", "Playback", WM8580_PWRDN1, 2, 1),
349 SND_SOC_DAPM_DAC("DAC2", "Playback", WM8580_PWRDN1, 3, 1),
350 SND_SOC_DAPM_DAC("DAC3", "Playback", WM8580_PWRDN1, 4, 1),
351
352 SND_SOC_DAPM_OUTPUT("VOUT1L"),
353 SND_SOC_DAPM_OUTPUT("VOUT1R"),
354 SND_SOC_DAPM_OUTPUT("VOUT2L"),
355 SND_SOC_DAPM_OUTPUT("VOUT2R"),
356 SND_SOC_DAPM_OUTPUT("VOUT3L"),
357 SND_SOC_DAPM_OUTPUT("VOUT3R"),
358
359 SND_SOC_DAPM_ADC("ADC", "Capture", WM8580_PWRDN1, 1, 1),
360
361 SND_SOC_DAPM_INPUT("AINL"),
362 SND_SOC_DAPM_INPUT("AINR"),
363 };
364
365 static const struct snd_soc_dapm_route audio_map[] = {
366         { "VOUT1L", NULL, "DAC1" },
367         { "VOUT1R", NULL, "DAC1" },
368
369         { "VOUT2L", NULL, "DAC2" },
370         { "VOUT2R", NULL, "DAC2" },
371
372         { "VOUT3L", NULL, "DAC3" },
373         { "VOUT3R", NULL, "DAC3" },
374
375         { "ADC", NULL, "AINL" },
376         { "ADC", NULL, "AINR" },
377 };
378
379 static int wm8580_add_widgets(struct snd_soc_codec *codec)
380 {
381         snd_soc_dapm_new_controls(codec, wm8580_dapm_widgets,
382                                   ARRAY_SIZE(wm8580_dapm_widgets));
383
384         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
385
386         snd_soc_dapm_new_widgets(codec);
387         return 0;
388 }
389
390 /* PLL divisors */
391 struct _pll_div {
392         u32 prescale:1;
393         u32 postscale:1;
394         u32 freqmode:2;
395         u32 n:4;
396         u32 k:24;
397 };
398
399 /* The size in bits of the pll divide */
400 #define FIXED_PLL_SIZE (1 << 22)
401
402 /* PLL rate to output rate divisions */
403 static struct {
404         unsigned int div;
405         unsigned int freqmode;
406         unsigned int postscale;
407 } post_table[] = {
408         {  2,  0, 0 },
409         {  4,  0, 1 },
410         {  4,  1, 0 },
411         {  8,  1, 1 },
412         {  8,  2, 0 },
413         { 16,  2, 1 },
414         { 12,  3, 0 },
415         { 24,  3, 1 }
416 };
417
418 static int pll_factors(struct _pll_div *pll_div, unsigned int target,
419                        unsigned int source)
420 {
421         u64 Kpart;
422         unsigned int K, Ndiv, Nmod;
423         int i;
424
425         pr_debug("wm8580: PLL %dHz->%dHz\n", source, target);
426
427         /* Scale the output frequency up; the PLL should run in the
428          * region of 90-100MHz.
429          */
430         for (i = 0; i < ARRAY_SIZE(post_table); i++) {
431                 if (target * post_table[i].div >=  90000000 &&
432                     target * post_table[i].div <= 100000000) {
433                         pll_div->freqmode = post_table[i].freqmode;
434                         pll_div->postscale = post_table[i].postscale;
435                         target *= post_table[i].div;
436                         break;
437                 }
438         }
439
440         if (i == ARRAY_SIZE(post_table)) {
441                 printk(KERN_ERR "wm8580: Unable to scale output frequency "
442                        "%u\n", target);
443                 return -EINVAL;
444         }
445
446         Ndiv = target / source;
447
448         if (Ndiv < 5) {
449                 source /= 2;
450                 pll_div->prescale = 1;
451                 Ndiv = target / source;
452         } else
453                 pll_div->prescale = 0;
454
455         if ((Ndiv < 5) || (Ndiv > 13)) {
456                 printk(KERN_ERR
457                         "WM8580 N=%d outside supported range\n", Ndiv);
458                 return -EINVAL;
459         }
460
461         pll_div->n = Ndiv;
462         Nmod = target % source;
463         Kpart = FIXED_PLL_SIZE * (long long)Nmod;
464
465         do_div(Kpart, source);
466
467         K = Kpart & 0xFFFFFFFF;
468
469         pll_div->k = K;
470
471         pr_debug("PLL %x.%x prescale %d freqmode %d postscale %d\n",
472                  pll_div->n, pll_div->k, pll_div->prescale, pll_div->freqmode,
473                  pll_div->postscale);
474
475         return 0;
476 }
477
478 static int wm8580_set_dai_pll(struct snd_soc_dai *codec_dai,
479                 int pll_id, unsigned int freq_in, unsigned int freq_out)
480 {
481         int offset;
482         struct snd_soc_codec *codec = codec_dai->codec;
483         struct wm8580_priv *wm8580 = codec->private_data;
484         struct pll_state *state;
485         struct _pll_div pll_div;
486         unsigned int reg;
487         unsigned int pwr_mask;
488         int ret;
489
490         /* GCC isn't able to work out the ifs below for initialising/using
491          * pll_div so suppress warnings.
492          */
493         memset(&pll_div, 0, sizeof(pll_div));
494
495         switch (pll_id) {
496         case WM8580_PLLA:
497                 state = &wm8580->a;
498                 offset = 0;
499                 pwr_mask = WM8580_PWRDN2_PLLAPD;
500                 break;
501         case WM8580_PLLB:
502                 state = &wm8580->b;
503                 offset = 4;
504                 pwr_mask = WM8580_PWRDN2_PLLBPD;
505                 break;
506         default:
507                 return -ENODEV;
508         }
509
510         if (freq_in && freq_out) {
511                 ret = pll_factors(&pll_div, freq_out, freq_in);
512                 if (ret != 0)
513                         return ret;
514         }
515
516         state->in = freq_in;
517         state->out = freq_out;
518
519         /* Always disable the PLL - it is not safe to leave it running
520          * while reprogramming it.
521          */
522         reg = wm8580_read(codec, WM8580_PWRDN2);
523         wm8580_write(codec, WM8580_PWRDN2, reg | pwr_mask);
524
525         if (!freq_in || !freq_out)
526                 return 0;
527
528         wm8580_write(codec, WM8580_PLLA1 + offset, pll_div.k & 0x1ff);
529         wm8580_write(codec, WM8580_PLLA2 + offset, (pll_div.k >> 9) & 0xff);
530         wm8580_write(codec, WM8580_PLLA3 + offset,
531                      (pll_div.k >> 18 & 0xf) | (pll_div.n << 4));
532
533         reg = wm8580_read(codec, WM8580_PLLA4 + offset);
534         reg &= ~0x3f;
535         reg |= pll_div.prescale | pll_div.postscale << 1 |
536                 pll_div.freqmode << 4;
537
538         wm8580_write(codec, WM8580_PLLA4 + offset, reg);
539
540         /* All done, turn it on */
541         reg = wm8580_read(codec, WM8580_PWRDN2);
542         wm8580_write(codec, WM8580_PWRDN2, reg & ~pwr_mask);
543
544         return 0;
545 }
546
547 /*
548  * Set PCM DAI bit size and sample rate.
549  */
550 static int wm8580_paif_hw_params(struct snd_pcm_substream *substream,
551         struct snd_pcm_hw_params *params)
552 {
553         struct snd_soc_pcm_runtime *rtd = substream->private_data;
554         struct snd_soc_dai_link *dai = rtd->dai;
555         struct snd_soc_device *socdev = rtd->socdev;
556         struct snd_soc_codec *codec = socdev->codec;
557         u16 paifb = wm8580_read(codec, WM8580_PAIF3 + dai->codec_dai->id);
558
559         paifb &= ~WM8580_AIF_LENGTH_MASK;
560         /* bit size */
561         switch (params_format(params)) {
562         case SNDRV_PCM_FORMAT_S16_LE:
563                 break;
564         case SNDRV_PCM_FORMAT_S20_3LE:
565                 paifb |= WM8580_AIF_LENGTH_20;
566                 break;
567         case SNDRV_PCM_FORMAT_S24_LE:
568                 paifb |= WM8580_AIF_LENGTH_24;
569                 break;
570         case SNDRV_PCM_FORMAT_S32_LE:
571                 paifb |= WM8580_AIF_LENGTH_24;
572                 break;
573         default:
574                 return -EINVAL;
575         }
576
577         wm8580_write(codec, WM8580_PAIF3 + dai->codec_dai->id, paifb);
578         return 0;
579 }
580
581 static int wm8580_set_paif_dai_fmt(struct snd_soc_dai *codec_dai,
582                                       unsigned int fmt)
583 {
584         struct snd_soc_codec *codec = codec_dai->codec;
585         unsigned int aifa;
586         unsigned int aifb;
587         int can_invert_lrclk;
588
589         aifa = wm8580_read(codec, WM8580_PAIF1 + codec_dai->id);
590         aifb = wm8580_read(codec, WM8580_PAIF3 + codec_dai->id);
591
592         aifb &= ~(WM8580_AIF_FMT_MASK | WM8580_AIF_LRP | WM8580_AIF_BCP);
593
594         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
595         case SND_SOC_DAIFMT_CBS_CFS:
596                 aifa &= ~WM8580_AIF_MS;
597                 break;
598         case SND_SOC_DAIFMT_CBM_CFM:
599                 aifa |= WM8580_AIF_MS;
600                 break;
601         default:
602                 return -EINVAL;
603         }
604
605         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
606         case SND_SOC_DAIFMT_I2S:
607                 can_invert_lrclk = 1;
608                 aifb |= WM8580_AIF_FMT_I2S;
609                 break;
610         case SND_SOC_DAIFMT_RIGHT_J:
611                 can_invert_lrclk = 1;
612                 aifb |= WM8580_AIF_FMT_RIGHTJ;
613                 break;
614         case SND_SOC_DAIFMT_LEFT_J:
615                 can_invert_lrclk = 1;
616                 aifb |= WM8580_AIF_FMT_LEFTJ;
617                 break;
618         case SND_SOC_DAIFMT_DSP_A:
619                 can_invert_lrclk = 0;
620                 aifb |= WM8580_AIF_FMT_DSP;
621                 break;
622         case SND_SOC_DAIFMT_DSP_B:
623                 can_invert_lrclk = 0;
624                 aifb |= WM8580_AIF_FMT_DSP;
625                 aifb |= WM8580_AIF_LRP;
626                 break;
627         default:
628                 return -EINVAL;
629         }
630
631         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
632         case SND_SOC_DAIFMT_NB_NF:
633                 break;
634
635         case SND_SOC_DAIFMT_IB_IF:
636                 if (!can_invert_lrclk)
637                         return -EINVAL;
638                 aifb |= WM8580_AIF_BCP;
639                 aifb |= WM8580_AIF_LRP;
640                 break;
641
642         case SND_SOC_DAIFMT_IB_NF:
643                 aifb |= WM8580_AIF_BCP;
644                 break;
645
646         case SND_SOC_DAIFMT_NB_IF:
647                 if (!can_invert_lrclk)
648                         return -EINVAL;
649                 aifb |= WM8580_AIF_LRP;
650                 break;
651
652         default:
653                 return -EINVAL;
654         }
655
656         wm8580_write(codec, WM8580_PAIF1 + codec_dai->id, aifa);
657         wm8580_write(codec, WM8580_PAIF3 + codec_dai->id, aifb);
658
659         return 0;
660 }
661
662 static int wm8580_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
663                                  int div_id, int div)
664 {
665         struct snd_soc_codec *codec = codec_dai->codec;
666         unsigned int reg;
667
668         switch (div_id) {
669         case WM8580_MCLK:
670                 reg = wm8580_read(codec, WM8580_PLLB4);
671                 reg &= ~WM8580_PLLB4_MCLKOUTSRC_MASK;
672
673                 switch (div) {
674                 case WM8580_CLKSRC_MCLK:
675                         /* Input */
676                         break;
677
678                 case WM8580_CLKSRC_PLLA:
679                         reg |= WM8580_PLLB4_MCLKOUTSRC_PLLA;
680                         break;
681                 case WM8580_CLKSRC_PLLB:
682                         reg |= WM8580_PLLB4_MCLKOUTSRC_PLLB;
683                         break;
684
685                 case WM8580_CLKSRC_OSC:
686                         reg |= WM8580_PLLB4_MCLKOUTSRC_OSC;
687                         break;
688
689                 default:
690                         return -EINVAL;
691                 }
692                 wm8580_write(codec, WM8580_PLLB4, reg);
693                 break;
694
695         case WM8580_DAC_CLKSEL:
696                 reg = wm8580_read(codec, WM8580_CLKSEL);
697                 reg &= ~WM8580_CLKSEL_DAC_CLKSEL_MASK;
698
699                 switch (div) {
700                 case WM8580_CLKSRC_MCLK:
701                         break;
702
703                 case WM8580_CLKSRC_PLLA:
704                         reg |= WM8580_CLKSEL_DAC_CLKSEL_PLLA;
705                         break;
706
707                 case WM8580_CLKSRC_PLLB:
708                         reg |= WM8580_CLKSEL_DAC_CLKSEL_PLLB;
709                         break;
710
711                 default:
712                         return -EINVAL;
713                 }
714                 wm8580_write(codec, WM8580_CLKSEL, reg);
715                 break;
716
717         case WM8580_CLKOUTSRC:
718                 reg = wm8580_read(codec, WM8580_PLLB4);
719                 reg &= ~WM8580_PLLB4_CLKOUTSRC_MASK;
720
721                 switch (div) {
722                 case WM8580_CLKSRC_NONE:
723                         break;
724
725                 case WM8580_CLKSRC_PLLA:
726                         reg |= WM8580_PLLB4_CLKOUTSRC_PLLACLK;
727                         break;
728
729                 case WM8580_CLKSRC_PLLB:
730                         reg |= WM8580_PLLB4_CLKOUTSRC_PLLBCLK;
731                         break;
732
733                 case WM8580_CLKSRC_OSC:
734                         reg |= WM8580_PLLB4_CLKOUTSRC_OSCCLK;
735                         break;
736
737                 default:
738                         return -EINVAL;
739                 }
740                 wm8580_write(codec, WM8580_PLLB4, reg);
741                 break;
742
743         default:
744                 return -EINVAL;
745         }
746
747         return 0;
748 }
749
750 static int wm8580_digital_mute(struct snd_soc_dai *codec_dai, int mute)
751 {
752         struct snd_soc_codec *codec = codec_dai->codec;
753         unsigned int reg;
754
755         reg = wm8580_read(codec, WM8580_DAC_CONTROL5);
756
757         if (mute)
758                 reg |= WM8580_DAC_CONTROL5_MUTEALL;
759         else
760                 reg &= ~WM8580_DAC_CONTROL5_MUTEALL;
761
762         wm8580_write(codec, WM8580_DAC_CONTROL5, reg);
763
764         return 0;
765 }
766
767 static int wm8580_set_bias_level(struct snd_soc_codec *codec,
768         enum snd_soc_bias_level level)
769 {
770         u16 reg;
771         switch (level) {
772         case SND_SOC_BIAS_ON:
773         case SND_SOC_BIAS_PREPARE:
774         case SND_SOC_BIAS_STANDBY:
775                 break;
776         case SND_SOC_BIAS_OFF:
777                 reg = wm8580_read(codec, WM8580_PWRDN1);
778                 wm8580_write(codec, WM8580_PWRDN1, reg | WM8580_PWRDN1_PWDN);
779                 break;
780         }
781         codec->bias_level = level;
782         return 0;
783 }
784
785 #define WM8580_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
786                         SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
787
788 struct snd_soc_dai wm8580_dai[] = {
789         {
790                 .name = "WM8580 PAIFRX",
791                 .id = 0,
792                 .playback = {
793                         .stream_name = "Playback",
794                         .channels_min = 1,
795                         .channels_max = 6,
796                         .rates = SNDRV_PCM_RATE_8000_192000,
797                         .formats = WM8580_FORMATS,
798                 },
799                 .ops = {
800                          .hw_params = wm8580_paif_hw_params,
801                  },
802                 .dai_ops = {
803                          .set_fmt = wm8580_set_paif_dai_fmt,
804                          .set_clkdiv = wm8580_set_dai_clkdiv,
805                          .set_pll = wm8580_set_dai_pll,
806                          .digital_mute = wm8580_digital_mute,
807                  },
808         },
809         {
810                 .name = "WM8580 PAIFTX",
811                 .id = 1,
812                 .capture = {
813                         .stream_name = "Capture",
814                         .channels_min = 2,
815                         .channels_max = 2,
816                         .rates = SNDRV_PCM_RATE_8000_192000,
817                         .formats = WM8580_FORMATS,
818                 },
819                 .ops = {
820                          .hw_params = wm8580_paif_hw_params,
821                  },
822                 .dai_ops = {
823                          .set_fmt = wm8580_set_paif_dai_fmt,
824                          .set_clkdiv = wm8580_set_dai_clkdiv,
825                          .set_pll = wm8580_set_dai_pll,
826                  },
827         },
828 };
829 EXPORT_SYMBOL_GPL(wm8580_dai);
830
831 /*
832  * initialise the WM8580 driver
833  * register the mixer and dsp interfaces with the kernel
834  */
835 static int wm8580_init(struct snd_soc_device *socdev)
836 {
837         struct snd_soc_codec *codec = socdev->codec;
838         int ret = 0;
839
840         codec->name = "WM8580";
841         codec->owner = THIS_MODULE;
842         codec->read = wm8580_read_reg_cache;
843         codec->write = wm8580_write;
844         codec->set_bias_level = wm8580_set_bias_level;
845         codec->dai = wm8580_dai;
846         codec->num_dai = ARRAY_SIZE(wm8580_dai);
847         codec->reg_cache_size = ARRAY_SIZE(wm8580_reg);
848         codec->reg_cache = kmemdup(wm8580_reg, sizeof(wm8580_reg),
849                                    GFP_KERNEL);
850
851         if (codec->reg_cache == NULL)
852                 return -ENOMEM;
853
854         /* Get the codec into a known state */
855         wm8580_write(codec, WM8580_RESET, 0);
856
857         /* Power up and get individual control of the DACs */
858         wm8580_write(codec, WM8580_PWRDN1, wm8580_read(codec, WM8580_PWRDN1) &
859                      ~(WM8580_PWRDN1_PWDN | WM8580_PWRDN1_ALLDACPD));
860
861         /* Make VMID high impedence */
862         wm8580_write(codec, WM8580_ADC_CONTROL1,
863                      wm8580_read(codec,  WM8580_ADC_CONTROL1) & ~0x100);
864
865         /* register pcms */
866         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1,
867                                SNDRV_DEFAULT_STR1);
868         if (ret < 0) {
869                 printk(KERN_ERR "wm8580: failed to create pcms\n");
870                 goto pcm_err;
871         }
872
873         wm8580_add_controls(codec);
874         wm8580_add_widgets(codec);
875
876         ret = snd_soc_register_card(socdev);
877         if (ret < 0) {
878                 printk(KERN_ERR "wm8580: failed to register card\n");
879                 goto card_err;
880         }
881         return ret;
882
883 card_err:
884         snd_soc_free_pcms(socdev);
885         snd_soc_dapm_free(socdev);
886 pcm_err:
887         kfree(codec->reg_cache);
888         return ret;
889 }
890
891 /* If the i2c layer weren't so broken, we could pass this kind of data
892    around */
893 static struct snd_soc_device *wm8580_socdev;
894
895 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
896
897 /*
898  * WM8580 2 wire address is determined by GPIO5
899  * state during powerup.
900  *    low  = 0x1a
901  *    high = 0x1b
902  */
903 static unsigned short normal_i2c[] = { 0, I2C_CLIENT_END };
904
905 /* Magic definition of all other variables and things */
906 I2C_CLIENT_INSMOD;
907
908 static struct i2c_driver wm8580_i2c_driver;
909 static struct i2c_client client_template;
910
911 static int wm8580_codec_probe(struct i2c_adapter *adap, int addr, int kind)
912 {
913         struct snd_soc_device *socdev = wm8580_socdev;
914         struct wm8580_setup_data *setup = socdev->codec_data;
915         struct snd_soc_codec *codec = socdev->codec;
916         struct i2c_client *i2c;
917         int ret;
918
919         if (addr != setup->i2c_address)
920                 return -ENODEV;
921
922         client_template.adapter = adap;
923         client_template.addr = addr;
924
925         i2c =  kmemdup(&client_template, sizeof(client_template), GFP_KERNEL);
926         if (i2c == NULL) {
927                 kfree(codec);
928                 return -ENOMEM;
929         }
930         i2c_set_clientdata(i2c, codec);
931         codec->control_data = i2c;
932
933         ret = i2c_attach_client(i2c);
934         if (ret < 0) {
935                 dev_err(&i2c->dev, "failed to attach codec at addr %x\n", addr);
936                 goto err;
937         }
938
939         ret = wm8580_init(socdev);
940         if (ret < 0) {
941                 dev_err(&i2c->dev, "failed to initialise WM8580\n");
942                 goto err;
943         }
944
945         return ret;
946
947 err:
948         kfree(codec);
949         kfree(i2c);
950         return ret;
951 }
952
953 static int wm8580_i2c_detach(struct i2c_client *client)
954 {
955         struct snd_soc_codec *codec = i2c_get_clientdata(client);
956         i2c_detach_client(client);
957         kfree(codec->reg_cache);
958         kfree(client);
959         return 0;
960 }
961
962 static int wm8580_i2c_attach(struct i2c_adapter *adap)
963 {
964         return i2c_probe(adap, &addr_data, wm8580_codec_probe);
965 }
966
967 /* corgi i2c codec control layer */
968 static struct i2c_driver wm8580_i2c_driver = {
969         .driver = {
970                 .name = "WM8580 I2C Codec",
971                 .owner = THIS_MODULE,
972         },
973         .attach_adapter = wm8580_i2c_attach,
974         .detach_client =  wm8580_i2c_detach,
975         .command =        NULL,
976 };
977
978 static struct i2c_client client_template = {
979         .name =   "WM8580",
980         .driver = &wm8580_i2c_driver,
981 };
982 #endif
983
984 static int wm8580_probe(struct platform_device *pdev)
985 {
986         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
987         struct wm8580_setup_data *setup;
988         struct snd_soc_codec *codec;
989         struct wm8580_priv *wm8580;
990         int ret = 0;
991
992         pr_info("WM8580 Audio Codec %s\n", WM8580_VERSION);
993
994         setup = socdev->codec_data;
995         codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
996         if (codec == NULL)
997                 return -ENOMEM;
998
999         wm8580 = kzalloc(sizeof(struct wm8580_priv), GFP_KERNEL);
1000         if (wm8580 == NULL) {
1001                 kfree(codec);
1002                 return -ENOMEM;
1003         }
1004
1005         codec->private_data = wm8580;
1006         socdev->codec = codec;
1007         mutex_init(&codec->mutex);
1008         INIT_LIST_HEAD(&codec->dapm_widgets);
1009         INIT_LIST_HEAD(&codec->dapm_paths);
1010         wm8580_socdev = socdev;
1011
1012 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1013         if (setup->i2c_address) {
1014                 normal_i2c[0] = setup->i2c_address;
1015                 codec->hw_write = (hw_write_t)i2c_master_send;
1016                 ret = i2c_add_driver(&wm8580_i2c_driver);
1017                 if (ret != 0)
1018                         printk(KERN_ERR "can't add i2c driver");
1019         }
1020 #else
1021                 /* Add other interfaces here */
1022 #endif
1023         return ret;
1024 }
1025
1026 /* power down chip */
1027 static int wm8580_remove(struct platform_device *pdev)
1028 {
1029         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1030         struct snd_soc_codec *codec = socdev->codec;
1031
1032         if (codec->control_data)
1033                 wm8580_set_bias_level(codec, SND_SOC_BIAS_OFF);
1034         snd_soc_free_pcms(socdev);
1035         snd_soc_dapm_free(socdev);
1036 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1037         i2c_del_driver(&wm8580_i2c_driver);
1038 #endif
1039         kfree(codec->private_data);
1040         kfree(codec);
1041
1042         return 0;
1043 }
1044
1045 struct snd_soc_codec_device soc_codec_dev_wm8580 = {
1046         .probe =        wm8580_probe,
1047         .remove =       wm8580_remove,
1048 };
1049 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8580);
1050
1051 MODULE_DESCRIPTION("ASoC WM8580 driver");
1052 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
1053 MODULE_LICENSE("GPL");