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15#include <linux/module.h>
16#include <linux/moduleparam.h>
17#include <linux/init.h>
18#include <linux/delay.h>
19#include <linux/pm.h>
20#include <linux/i2c.h>
21#include <linux/spi/spi.h>
22#include <linux/slab.h>
23#include <linux/of_device.h>
24#include <sound/core.h>
25#include <sound/pcm.h>
26#include <sound/pcm_params.h>
27#include <sound/soc.h>
28#include <sound/tlv.h>
29#include <sound/initval.h>
30
31#include "wm8711.h"
32
33
34struct wm8711_priv {
35 enum snd_soc_control_type bus_type;
36 unsigned int sysclk;
37};
38
39
40
41
42
43
44
45static const u16 wm8711_reg[WM8711_CACHEREGNUM] = {
46 0x0079, 0x0079, 0x000a, 0x0008,
47 0x009f, 0x000a, 0x0000, 0x0000
48};
49
50#define wm8711_reset(c) snd_soc_write(c, WM8711_RESET, 0)
51
52static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
53
54static const struct snd_kcontrol_new wm8711_snd_controls[] = {
55
56SOC_DOUBLE_R_TLV("Master Playback Volume", WM8711_LOUT1V, WM8711_ROUT1V,
57 0, 127, 0, out_tlv),
58SOC_DOUBLE_R("Master Playback ZC Switch", WM8711_LOUT1V, WM8711_ROUT1V,
59 7, 1, 0),
60
61};
62
63
64static const struct snd_kcontrol_new wm8711_output_mixer_controls[] = {
65SOC_DAPM_SINGLE("Line Bypass Switch", WM8711_APANA, 3, 1, 0),
66SOC_DAPM_SINGLE("HiFi Playback Switch", WM8711_APANA, 4, 1, 0),
67};
68
69static const struct snd_soc_dapm_widget wm8711_dapm_widgets[] = {
70SND_SOC_DAPM_MIXER("Output Mixer", WM8711_PWR, 4, 1,
71 &wm8711_output_mixer_controls[0],
72 ARRAY_SIZE(wm8711_output_mixer_controls)),
73SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8711_PWR, 3, 1),
74SND_SOC_DAPM_OUTPUT("LOUT"),
75SND_SOC_DAPM_OUTPUT("LHPOUT"),
76SND_SOC_DAPM_OUTPUT("ROUT"),
77SND_SOC_DAPM_OUTPUT("RHPOUT"),
78};
79
80static const struct snd_soc_dapm_route wm8711_intercon[] = {
81
82 {"Output Mixer", "Line Bypass Switch", "Line Input"},
83 {"Output Mixer", "HiFi Playback Switch", "DAC"},
84
85
86 {"RHPOUT", NULL, "Output Mixer"},
87 {"ROUT", NULL, "Output Mixer"},
88 {"LHPOUT", NULL, "Output Mixer"},
89 {"LOUT", NULL, "Output Mixer"},
90};
91
92struct _coeff_div {
93 u32 mclk;
94 u32 rate;
95 u16 fs;
96 u8 sr:4;
97 u8 bosr:1;
98 u8 usb:1;
99};
100
101
102static const struct _coeff_div coeff_div[] = {
103
104 {12288000, 48000, 256, 0x0, 0x0, 0x0},
105 {18432000, 48000, 384, 0x0, 0x1, 0x0},
106 {12000000, 48000, 250, 0x0, 0x0, 0x1},
107
108
109 {12288000, 32000, 384, 0x6, 0x0, 0x0},
110 {18432000, 32000, 576, 0x6, 0x1, 0x0},
111 {12000000, 32000, 375, 0x6, 0x0, 0x1},
112
113
114 {12288000, 8000, 1536, 0x3, 0x0, 0x0},
115 {18432000, 8000, 2304, 0x3, 0x1, 0x0},
116 {11289600, 8000, 1408, 0xb, 0x0, 0x0},
117 {16934400, 8000, 2112, 0xb, 0x1, 0x0},
118 {12000000, 8000, 1500, 0x3, 0x0, 0x1},
119
120
121 {12288000, 96000, 128, 0x7, 0x0, 0x0},
122 {18432000, 96000, 192, 0x7, 0x1, 0x0},
123 {12000000, 96000, 125, 0x7, 0x0, 0x1},
124
125
126 {11289600, 44100, 256, 0x8, 0x0, 0x0},
127 {16934400, 44100, 384, 0x8, 0x1, 0x0},
128 {12000000, 44100, 272, 0x8, 0x1, 0x1},
129
130
131 {11289600, 88200, 128, 0xf, 0x0, 0x0},
132 {16934400, 88200, 192, 0xf, 0x1, 0x0},
133 {12000000, 88200, 136, 0xf, 0x1, 0x1},
134};
135
136static inline int get_coeff(int mclk, int rate)
137{
138 int i;
139
140 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
141 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
142 return i;
143 }
144 return 0;
145}
146
147static int wm8711_hw_params(struct snd_pcm_substream *substream,
148 struct snd_pcm_hw_params *params,
149 struct snd_soc_dai *dai)
150{
151 struct snd_soc_codec *codec = dai->codec;
152 struct wm8711_priv *wm8711 = snd_soc_codec_get_drvdata(codec);
153 u16 iface = snd_soc_read(codec, WM8711_IFACE) & 0xfff3;
154 int i = get_coeff(wm8711->sysclk, params_rate(params));
155 u16 srate = (coeff_div[i].sr << 2) |
156 (coeff_div[i].bosr << 1) | coeff_div[i].usb;
157
158 snd_soc_write(codec, WM8711_SRATE, srate);
159
160
161 switch (params_format(params)) {
162 case SNDRV_PCM_FORMAT_S16_LE:
163 break;
164 case SNDRV_PCM_FORMAT_S20_3LE:
165 iface |= 0x0004;
166 break;
167 case SNDRV_PCM_FORMAT_S24_LE:
168 iface |= 0x0008;
169 break;
170 }
171
172 snd_soc_write(codec, WM8711_IFACE, iface);
173 return 0;
174}
175
176static int wm8711_pcm_prepare(struct snd_pcm_substream *substream,
177 struct snd_soc_dai *dai)
178{
179 struct snd_soc_codec *codec = dai->codec;
180
181
182 snd_soc_write(codec, WM8711_ACTIVE, 0x0001);
183
184 return 0;
185}
186
187static void wm8711_shutdown(struct snd_pcm_substream *substream,
188 struct snd_soc_dai *dai)
189{
190 struct snd_soc_codec *codec = dai->codec;
191
192
193 if (!codec->active) {
194 udelay(50);
195 snd_soc_write(codec, WM8711_ACTIVE, 0x0);
196 }
197}
198
199static int wm8711_mute(struct snd_soc_dai *dai, int mute)
200{
201 struct snd_soc_codec *codec = dai->codec;
202 u16 mute_reg = snd_soc_read(codec, WM8711_APDIGI) & 0xfff7;
203
204 if (mute)
205 snd_soc_write(codec, WM8711_APDIGI, mute_reg | 0x8);
206 else
207 snd_soc_write(codec, WM8711_APDIGI, mute_reg);
208
209 return 0;
210}
211
212static int wm8711_set_dai_sysclk(struct snd_soc_dai *codec_dai,
213 int clk_id, unsigned int freq, int dir)
214{
215 struct snd_soc_codec *codec = codec_dai->codec;
216 struct wm8711_priv *wm8711 = snd_soc_codec_get_drvdata(codec);
217
218 switch (freq) {
219 case 11289600:
220 case 12000000:
221 case 12288000:
222 case 16934400:
223 case 18432000:
224 wm8711->sysclk = freq;
225 return 0;
226 }
227 return -EINVAL;
228}
229
230static int wm8711_set_dai_fmt(struct snd_soc_dai *codec_dai,
231 unsigned int fmt)
232{
233 struct snd_soc_codec *codec = codec_dai->codec;
234 u16 iface = snd_soc_read(codec, WM8711_IFACE) & 0x000c;
235
236
237 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
238 case SND_SOC_DAIFMT_CBM_CFM:
239 iface |= 0x0040;
240 break;
241 case SND_SOC_DAIFMT_CBS_CFS:
242 break;
243 default:
244 return -EINVAL;
245 }
246
247
248 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
249 case SND_SOC_DAIFMT_I2S:
250 iface |= 0x0002;
251 break;
252 case SND_SOC_DAIFMT_RIGHT_J:
253 break;
254 case SND_SOC_DAIFMT_LEFT_J:
255 iface |= 0x0001;
256 break;
257 case SND_SOC_DAIFMT_DSP_A:
258 iface |= 0x0003;
259 break;
260 case SND_SOC_DAIFMT_DSP_B:
261 iface |= 0x0013;
262 break;
263 default:
264 return -EINVAL;
265 }
266
267
268 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
269 case SND_SOC_DAIFMT_NB_NF:
270 break;
271 case SND_SOC_DAIFMT_IB_IF:
272 iface |= 0x0090;
273 break;
274 case SND_SOC_DAIFMT_IB_NF:
275 iface |= 0x0080;
276 break;
277 case SND_SOC_DAIFMT_NB_IF:
278 iface |= 0x0010;
279 break;
280 default:
281 return -EINVAL;
282 }
283
284
285 snd_soc_write(codec, WM8711_IFACE, iface);
286 return 0;
287}
288
289static int wm8711_set_bias_level(struct snd_soc_codec *codec,
290 enum snd_soc_bias_level level)
291{
292 u16 reg = snd_soc_read(codec, WM8711_PWR) & 0xff7f;
293
294 switch (level) {
295 case SND_SOC_BIAS_ON:
296 snd_soc_write(codec, WM8711_PWR, reg);
297 break;
298 case SND_SOC_BIAS_PREPARE:
299 break;
300 case SND_SOC_BIAS_STANDBY:
301 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF)
302 snd_soc_cache_sync(codec);
303
304 snd_soc_write(codec, WM8711_PWR, reg | 0x0040);
305 break;
306 case SND_SOC_BIAS_OFF:
307 snd_soc_write(codec, WM8711_ACTIVE, 0x0);
308 snd_soc_write(codec, WM8711_PWR, 0xffff);
309 break;
310 }
311 codec->dapm.bias_level = level;
312 return 0;
313}
314
315#define WM8711_RATES SNDRV_PCM_RATE_8000_96000
316
317#define WM8711_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
318 SNDRV_PCM_FMTBIT_S24_LE)
319
320static const struct snd_soc_dai_ops wm8711_ops = {
321 .prepare = wm8711_pcm_prepare,
322 .hw_params = wm8711_hw_params,
323 .shutdown = wm8711_shutdown,
324 .digital_mute = wm8711_mute,
325 .set_sysclk = wm8711_set_dai_sysclk,
326 .set_fmt = wm8711_set_dai_fmt,
327};
328
329static struct snd_soc_dai_driver wm8711_dai = {
330 .name = "wm8711-hifi",
331 .playback = {
332 .stream_name = "Playback",
333 .channels_min = 1,
334 .channels_max = 2,
335 .rates = WM8711_RATES,
336 .formats = WM8711_FORMATS,
337 },
338 .ops = &wm8711_ops,
339};
340
341static int wm8711_suspend(struct snd_soc_codec *codec)
342{
343 snd_soc_write(codec, WM8711_ACTIVE, 0x0);
344 wm8711_set_bias_level(codec, SND_SOC_BIAS_OFF);
345 return 0;
346}
347
348static int wm8711_resume(struct snd_soc_codec *codec)
349{
350 wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
351 return 0;
352}
353
354static int wm8711_probe(struct snd_soc_codec *codec)
355{
356 struct wm8711_priv *wm8711 = snd_soc_codec_get_drvdata(codec);
357 int ret;
358
359 ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8711->bus_type);
360 if (ret < 0) {
361 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
362 return ret;
363 }
364
365 ret = wm8711_reset(codec);
366 if (ret < 0) {
367 dev_err(codec->dev, "Failed to issue reset\n");
368 return ret;
369 }
370
371 wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
372
373
374 snd_soc_update_bits(codec, WM8711_LOUT1V, 0x0100, 0x0100);
375 snd_soc_update_bits(codec, WM8711_ROUT1V, 0x0100, 0x0100);
376
377 return ret;
378
379}
380
381
382static int wm8711_remove(struct snd_soc_codec *codec)
383{
384 wm8711_set_bias_level(codec, SND_SOC_BIAS_OFF);
385 return 0;
386}
387
388static struct snd_soc_codec_driver soc_codec_dev_wm8711 = {
389 .probe = wm8711_probe,
390 .remove = wm8711_remove,
391 .suspend = wm8711_suspend,
392 .resume = wm8711_resume,
393 .set_bias_level = wm8711_set_bias_level,
394 .reg_cache_size = ARRAY_SIZE(wm8711_reg),
395 .reg_word_size = sizeof(u16),
396 .reg_cache_default = wm8711_reg,
397 .controls = wm8711_snd_controls,
398 .num_controls = ARRAY_SIZE(wm8711_snd_controls),
399 .dapm_widgets = wm8711_dapm_widgets,
400 .num_dapm_widgets = ARRAY_SIZE(wm8711_dapm_widgets),
401 .dapm_routes = wm8711_intercon,
402 .num_dapm_routes = ARRAY_SIZE(wm8711_intercon),
403};
404
405static const struct of_device_id wm8711_of_match[] = {
406 { .compatible = "wlf,wm8711", },
407 { }
408};
409MODULE_DEVICE_TABLE(of, wm8711_of_match);
410
411#if defined(CONFIG_SPI_MASTER)
412static int __devinit wm8711_spi_probe(struct spi_device *spi)
413{
414 struct wm8711_priv *wm8711;
415 int ret;
416
417 wm8711 = kzalloc(sizeof(struct wm8711_priv), GFP_KERNEL);
418 if (wm8711 == NULL)
419 return -ENOMEM;
420
421 spi_set_drvdata(spi, wm8711);
422 wm8711->bus_type = SND_SOC_SPI;
423
424 ret = snd_soc_register_codec(&spi->dev,
425 &soc_codec_dev_wm8711, &wm8711_dai, 1);
426 if (ret < 0)
427 kfree(wm8711);
428 return ret;
429}
430
431static int __devexit wm8711_spi_remove(struct spi_device *spi)
432{
433 snd_soc_unregister_codec(&spi->dev);
434 kfree(spi_get_drvdata(spi));
435 return 0;
436}
437
438static struct spi_driver wm8711_spi_driver = {
439 .driver = {
440 .name = "wm8711",
441 .owner = THIS_MODULE,
442 .of_match_table = wm8711_of_match,
443 },
444 .probe = wm8711_spi_probe,
445 .remove = __devexit_p(wm8711_spi_remove),
446};
447#endif
448
449#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
450static __devinit int wm8711_i2c_probe(struct i2c_client *client,
451 const struct i2c_device_id *id)
452{
453 struct wm8711_priv *wm8711;
454 int ret;
455
456 wm8711 = kzalloc(sizeof(struct wm8711_priv), GFP_KERNEL);
457 if (wm8711 == NULL)
458 return -ENOMEM;
459
460 i2c_set_clientdata(client, wm8711);
461 wm8711->bus_type = SND_SOC_I2C;
462
463 ret = snd_soc_register_codec(&client->dev,
464 &soc_codec_dev_wm8711, &wm8711_dai, 1);
465 if (ret < 0)
466 kfree(wm8711);
467 return ret;
468}
469
470static __devexit int wm8711_i2c_remove(struct i2c_client *client)
471{
472 snd_soc_unregister_codec(&client->dev);
473 kfree(i2c_get_clientdata(client));
474 return 0;
475}
476
477static const struct i2c_device_id wm8711_i2c_id[] = {
478 { "wm8711", 0 },
479 { }
480};
481MODULE_DEVICE_TABLE(i2c, wm8711_i2c_id);
482
483static struct i2c_driver wm8711_i2c_driver = {
484 .driver = {
485 .name = "wm8711",
486 .owner = THIS_MODULE,
487 .of_match_table = wm8711_of_match,
488 },
489 .probe = wm8711_i2c_probe,
490 .remove = __devexit_p(wm8711_i2c_remove),
491 .id_table = wm8711_i2c_id,
492};
493#endif
494
495static int __init wm8711_modinit(void)
496{
497 int ret;
498#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
499 ret = i2c_add_driver(&wm8711_i2c_driver);
500 if (ret != 0) {
501 printk(KERN_ERR "Failed to register WM8711 I2C driver: %d\n",
502 ret);
503 }
504#endif
505#if defined(CONFIG_SPI_MASTER)
506 ret = spi_register_driver(&wm8711_spi_driver);
507 if (ret != 0) {
508 printk(KERN_ERR "Failed to register WM8711 SPI driver: %d\n",
509 ret);
510 }
511#endif
512 return 0;
513}
514module_init(wm8711_modinit);
515
516static void __exit wm8711_exit(void)
517{
518#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
519 i2c_del_driver(&wm8711_i2c_driver);
520#endif
521#if defined(CONFIG_SPI_MASTER)
522 spi_unregister_driver(&wm8711_spi_driver);
523#endif
524}
525module_exit(wm8711_exit);
526
527MODULE_DESCRIPTION("ASoC WM8711 driver");
528MODULE_AUTHOR("Mike Arthur");
529MODULE_LICENSE("GPL");
530
