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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/platform_device.h>
22#include <linux/spi/spi.h>
23#include <linux/slab.h>
24#include <linux/of_device.h>
25#include <sound/core.h>
26#include <sound/pcm.h>
27#include <sound/pcm_params.h>
28#include <sound/soc.h>
29#include <sound/tlv.h>
30#include <sound/initval.h>
31
32#include "wm8711.h"
33
34
35struct wm8711_priv {
36 enum snd_soc_control_type bus_type;
37 unsigned int sysclk;
38};
39
40
41
42
43
44
45
46static const u16 wm8711_reg[WM8711_CACHEREGNUM] = {
47 0x0079, 0x0079, 0x000a, 0x0008,
48 0x009f, 0x000a, 0x0000, 0x0000
49};
50
51#define wm8711_reset(c) snd_soc_write(c, WM8711_RESET, 0)
52
53static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
54
55static const struct snd_kcontrol_new wm8711_snd_controls[] = {
56
57SOC_DOUBLE_R_TLV("Master Playback Volume", WM8711_LOUT1V, WM8711_ROUT1V,
58 0, 127, 0, out_tlv),
59SOC_DOUBLE_R("Master Playback ZC Switch", WM8711_LOUT1V, WM8711_ROUT1V,
60 7, 1, 0),
61
62};
63
64
65static const struct snd_kcontrol_new wm8711_output_mixer_controls[] = {
66SOC_DAPM_SINGLE("Line Bypass Switch", WM8711_APANA, 3, 1, 0),
67SOC_DAPM_SINGLE("HiFi Playback Switch", WM8711_APANA, 4, 1, 0),
68};
69
70static const struct snd_soc_dapm_widget wm8711_dapm_widgets[] = {
71SND_SOC_DAPM_MIXER("Output Mixer", WM8711_PWR, 4, 1,
72 &wm8711_output_mixer_controls[0],
73 ARRAY_SIZE(wm8711_output_mixer_controls)),
74SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8711_PWR, 3, 1),
75SND_SOC_DAPM_OUTPUT("LOUT"),
76SND_SOC_DAPM_OUTPUT("LHPOUT"),
77SND_SOC_DAPM_OUTPUT("ROUT"),
78SND_SOC_DAPM_OUTPUT("RHPOUT"),
79};
80
81static const struct snd_soc_dapm_route wm8711_intercon[] = {
82
83 {"Output Mixer", "Line Bypass Switch", "Line Input"},
84 {"Output Mixer", "HiFi Playback Switch", "DAC"},
85
86
87 {"RHPOUT", NULL, "Output Mixer"},
88 {"ROUT", NULL, "Output Mixer"},
89 {"LHPOUT", NULL, "Output Mixer"},
90 {"LOUT", NULL, "Output Mixer"},
91};
92
93struct _coeff_div {
94 u32 mclk;
95 u32 rate;
96 u16 fs;
97 u8 sr:4;
98 u8 bosr:1;
99 u8 usb:1;
100};
101
102
103static const struct _coeff_div coeff_div[] = {
104
105 {12288000, 48000, 256, 0x0, 0x0, 0x0},
106 {18432000, 48000, 384, 0x0, 0x1, 0x0},
107 {12000000, 48000, 250, 0x0, 0x0, 0x1},
108
109
110 {12288000, 32000, 384, 0x6, 0x0, 0x0},
111 {18432000, 32000, 576, 0x6, 0x1, 0x0},
112 {12000000, 32000, 375, 0x6, 0x0, 0x1},
113
114
115 {12288000, 8000, 1536, 0x3, 0x0, 0x0},
116 {18432000, 8000, 2304, 0x3, 0x1, 0x0},
117 {11289600, 8000, 1408, 0xb, 0x0, 0x0},
118 {16934400, 8000, 2112, 0xb, 0x1, 0x0},
119 {12000000, 8000, 1500, 0x3, 0x0, 0x1},
120
121
122 {12288000, 96000, 128, 0x7, 0x0, 0x0},
123 {18432000, 96000, 192, 0x7, 0x1, 0x0},
124 {12000000, 96000, 125, 0x7, 0x0, 0x1},
125
126
127 {11289600, 44100, 256, 0x8, 0x0, 0x0},
128 {16934400, 44100, 384, 0x8, 0x1, 0x0},
129 {12000000, 44100, 272, 0x8, 0x1, 0x1},
130
131
132 {11289600, 88200, 128, 0xf, 0x0, 0x0},
133 {16934400, 88200, 192, 0xf, 0x1, 0x0},
134 {12000000, 88200, 136, 0xf, 0x1, 0x1},
135};
136
137static inline int get_coeff(int mclk, int rate)
138{
139 int i;
140
141 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
142 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
143 return i;
144 }
145 return 0;
146}
147
148static int wm8711_hw_params(struct snd_pcm_substream *substream,
149 struct snd_pcm_hw_params *params,
150 struct snd_soc_dai *dai)
151{
152 struct snd_soc_codec *codec = dai->codec;
153 struct wm8711_priv *wm8711 = snd_soc_codec_get_drvdata(codec);
154 u16 iface = snd_soc_read(codec, WM8711_IFACE) & 0xfff3;
155 int i = get_coeff(wm8711->sysclk, params_rate(params));
156 u16 srate = (coeff_div[i].sr << 2) |
157 (coeff_div[i].bosr << 1) | coeff_div[i].usb;
158
159 snd_soc_write(codec, WM8711_SRATE, srate);
160
161
162 switch (params_format(params)) {
163 case SNDRV_PCM_FORMAT_S16_LE:
164 break;
165 case SNDRV_PCM_FORMAT_S20_3LE:
166 iface |= 0x0004;
167 break;
168 case SNDRV_PCM_FORMAT_S24_LE:
169 iface |= 0x0008;
170 break;
171 }
172
173 snd_soc_write(codec, WM8711_IFACE, iface);
174 return 0;
175}
176
177static int wm8711_pcm_prepare(struct snd_pcm_substream *substream,
178 struct snd_soc_dai *dai)
179{
180 struct snd_soc_codec *codec = dai->codec;
181
182
183 snd_soc_write(codec, WM8711_ACTIVE, 0x0001);
184
185 return 0;
186}
187
188static void wm8711_shutdown(struct snd_pcm_substream *substream,
189 struct snd_soc_dai *dai)
190{
191 struct snd_soc_codec *codec = dai->codec;
192
193
194 if (!codec->active) {
195 udelay(50);
196 snd_soc_write(codec, WM8711_ACTIVE, 0x0);
197 }
198}
199
200static int wm8711_mute(struct snd_soc_dai *dai, int mute)
201{
202 struct snd_soc_codec *codec = dai->codec;
203 u16 mute_reg = snd_soc_read(codec, WM8711_APDIGI) & 0xfff7;
204
205 if (mute)
206 snd_soc_write(codec, WM8711_APDIGI, mute_reg | 0x8);
207 else
208 snd_soc_write(codec, WM8711_APDIGI, mute_reg);
209
210 return 0;
211}
212
213static int wm8711_set_dai_sysclk(struct snd_soc_dai *codec_dai,
214 int clk_id, unsigned int freq, int dir)
215{
216 struct snd_soc_codec *codec = codec_dai->codec;
217 struct wm8711_priv *wm8711 = snd_soc_codec_get_drvdata(codec);
218
219 switch (freq) {
220 case 11289600:
221 case 12000000:
222 case 12288000:
223 case 16934400:
224 case 18432000:
225 wm8711->sysclk = freq;
226 return 0;
227 }
228 return -EINVAL;
229}
230
231static int wm8711_set_dai_fmt(struct snd_soc_dai *codec_dai,
232 unsigned int fmt)
233{
234 struct snd_soc_codec *codec = codec_dai->codec;
235 u16 iface = snd_soc_read(codec, WM8711_IFACE) & 0x000c;
236
237
238 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
239 case SND_SOC_DAIFMT_CBM_CFM:
240 iface |= 0x0040;
241 break;
242 case SND_SOC_DAIFMT_CBS_CFS:
243 break;
244 default:
245 return -EINVAL;
246 }
247
248
249 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
250 case SND_SOC_DAIFMT_I2S:
251 iface |= 0x0002;
252 break;
253 case SND_SOC_DAIFMT_RIGHT_J:
254 break;
255 case SND_SOC_DAIFMT_LEFT_J:
256 iface |= 0x0001;
257 break;
258 case SND_SOC_DAIFMT_DSP_A:
259 iface |= 0x0003;
260 break;
261 case SND_SOC_DAIFMT_DSP_B:
262 iface |= 0x0013;
263 break;
264 default:
265 return -EINVAL;
266 }
267
268
269 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
270 case SND_SOC_DAIFMT_NB_NF:
271 break;
272 case SND_SOC_DAIFMT_IB_IF:
273 iface |= 0x0090;
274 break;
275 case SND_SOC_DAIFMT_IB_NF:
276 iface |= 0x0080;
277 break;
278 case SND_SOC_DAIFMT_NB_IF:
279 iface |= 0x0010;
280 break;
281 default:
282 return -EINVAL;
283 }
284
285
286 snd_soc_write(codec, WM8711_IFACE, iface);
287 return 0;
288}
289
290static int wm8711_set_bias_level(struct snd_soc_codec *codec,
291 enum snd_soc_bias_level level)
292{
293 u16 reg = snd_soc_read(codec, WM8711_PWR) & 0xff7f;
294
295 switch (level) {
296 case SND_SOC_BIAS_ON:
297 snd_soc_write(codec, WM8711_PWR, reg);
298 break;
299 case SND_SOC_BIAS_PREPARE:
300 break;
301 case SND_SOC_BIAS_STANDBY:
302 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF)
303 snd_soc_cache_sync(codec);
304
305 snd_soc_write(codec, WM8711_PWR, reg | 0x0040);
306 break;
307 case SND_SOC_BIAS_OFF:
308 snd_soc_write(codec, WM8711_ACTIVE, 0x0);
309 snd_soc_write(codec, WM8711_PWR, 0xffff);
310 break;
311 }
312 codec->dapm.bias_level = level;
313 return 0;
314}
315
316#define WM8711_RATES SNDRV_PCM_RATE_8000_96000
317
318#define WM8711_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
319 SNDRV_PCM_FMTBIT_S24_LE)
320
321static struct snd_soc_dai_ops wm8711_ops = {
322 .prepare = wm8711_pcm_prepare,
323 .hw_params = wm8711_hw_params,
324 .shutdown = wm8711_shutdown,
325 .digital_mute = wm8711_mute,
326 .set_sysclk = wm8711_set_dai_sysclk,
327 .set_fmt = wm8711_set_dai_fmt,
328};
329
330static struct snd_soc_dai_driver wm8711_dai = {
331 .name = "wm8711-hifi",
332 .playback = {
333 .stream_name = "Playback",
334 .channels_min = 1,
335 .channels_max = 2,
336 .rates = WM8711_RATES,
337 .formats = WM8711_FORMATS,
338 },
339 .ops = &wm8711_ops,
340};
341
342static int wm8711_suspend(struct snd_soc_codec *codec, pm_message_t state)
343{
344 snd_soc_write(codec, WM8711_ACTIVE, 0x0);
345 wm8711_set_bias_level(codec, SND_SOC_BIAS_OFF);
346 return 0;
347}
348
349static int wm8711_resume(struct snd_soc_codec *codec)
350{
351 wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
352 return 0;
353}
354
355static int wm8711_probe(struct snd_soc_codec *codec)
356{
357 struct wm8711_priv *wm8711 = snd_soc_codec_get_drvdata(codec);
358 int ret;
359
360 ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8711->bus_type);
361 if (ret < 0) {
362 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
363 return ret;
364 }
365
366 ret = wm8711_reset(codec);
367 if (ret < 0) {
368 dev_err(codec->dev, "Failed to issue reset\n");
369 return ret;
370 }
371
372 wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
373
374
375 snd_soc_update_bits(codec, WM8711_LOUT1V, 0x0100, 0x0100);
376 snd_soc_update_bits(codec, WM8711_ROUT1V, 0x0100, 0x0100);
377
378 snd_soc_add_controls(codec, wm8711_snd_controls,
379 ARRAY_SIZE(wm8711_snd_controls));
380
381 return ret;
382
383}
384
385
386static int wm8711_remove(struct snd_soc_codec *codec)
387{
388 wm8711_set_bias_level(codec, SND_SOC_BIAS_OFF);
389 return 0;
390}
391
392static struct snd_soc_codec_driver soc_codec_dev_wm8711 = {
393 .probe = wm8711_probe,
394 .remove = wm8711_remove,
395 .suspend = wm8711_suspend,
396 .resume = wm8711_resume,
397 .set_bias_level = wm8711_set_bias_level,
398 .reg_cache_size = ARRAY_SIZE(wm8711_reg),
399 .reg_word_size = sizeof(u16),
400 .reg_cache_default = wm8711_reg,
401 .dapm_widgets = wm8711_dapm_widgets,
402 .num_dapm_widgets = ARRAY_SIZE(wm8711_dapm_widgets),
403 .dapm_routes = wm8711_intercon,
404 .num_dapm_routes = ARRAY_SIZE(wm8711_intercon),
405};
406
407static const struct of_device_id wm8711_of_match[] = {
408 { .compatible = "wlf,wm8711", },
409 { }
410};
411MODULE_DEVICE_TABLE(of, wm8711_of_match);
412
413#if defined(CONFIG_SPI_MASTER)
414static int __devinit wm8711_spi_probe(struct spi_device *spi)
415{
416 struct wm8711_priv *wm8711;
417 int ret;
418
419 wm8711 = kzalloc(sizeof(struct wm8711_priv), GFP_KERNEL);
420 if (wm8711 == NULL)
421 return -ENOMEM;
422
423 spi_set_drvdata(spi, wm8711);
424 wm8711->bus_type = SND_SOC_SPI;
425
426 ret = snd_soc_register_codec(&spi->dev,
427 &soc_codec_dev_wm8711, &wm8711_dai, 1);
428 if (ret < 0)
429 kfree(wm8711);
430 return ret;
431}
432
433static int __devexit wm8711_spi_remove(struct spi_device *spi)
434{
435 snd_soc_unregister_codec(&spi->dev);
436 kfree(spi_get_drvdata(spi));
437 return 0;
438}
439
440static struct spi_driver wm8711_spi_driver = {
441 .driver = {
442 .name = "wm8711",
443 .owner = THIS_MODULE,
444 .of_match_table = wm8711_of_match,
445 },
446 .probe = wm8711_spi_probe,
447 .remove = __devexit_p(wm8711_spi_remove),
448};
449#endif
450
451#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
452static __devinit int wm8711_i2c_probe(struct i2c_client *client,
453 const struct i2c_device_id *id)
454{
455 struct wm8711_priv *wm8711;
456 int ret;
457
458 wm8711 = kzalloc(sizeof(struct wm8711_priv), GFP_KERNEL);
459 if (wm8711 == NULL)
460 return -ENOMEM;
461
462 i2c_set_clientdata(client, wm8711);
463 wm8711->bus_type = SND_SOC_I2C;
464
465 ret = snd_soc_register_codec(&client->dev,
466 &soc_codec_dev_wm8711, &wm8711_dai, 1);
467 if (ret < 0)
468 kfree(wm8711);
469 return ret;
470}
471
472static __devexit int wm8711_i2c_remove(struct i2c_client *client)
473{
474 snd_soc_unregister_codec(&client->dev);
475 kfree(i2c_get_clientdata(client));
476 return 0;
477}
478
479static const struct i2c_device_id wm8711_i2c_id[] = {
480 { "wm8711", 0 },
481 { }
482};
483MODULE_DEVICE_TABLE(i2c, wm8711_i2c_id);
484
485static struct i2c_driver wm8711_i2c_driver = {
486 .driver = {
487 .name = "wm8711",
488 .owner = THIS_MODULE,
489 .of_match_table = wm8711_of_match,
490 },
491 .probe = wm8711_i2c_probe,
492 .remove = __devexit_p(wm8711_i2c_remove),
493 .id_table = wm8711_i2c_id,
494};
495#endif
496
497static int __init wm8711_modinit(void)
498{
499 int ret;
500#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
501 ret = i2c_add_driver(&wm8711_i2c_driver);
502 if (ret != 0) {
503 printk(KERN_ERR "Failed to register WM8711 I2C driver: %d\n",
504 ret);
505 }
506#endif
507#if defined(CONFIG_SPI_MASTER)
508 ret = spi_register_driver(&wm8711_spi_driver);
509 if (ret != 0) {
510 printk(KERN_ERR "Failed to register WM8711 SPI driver: %d\n",
511 ret);
512 }
513#endif
514 return 0;
515}
516module_init(wm8711_modinit);
517
518static void __exit wm8711_exit(void)
519{
520#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
521 i2c_del_driver(&wm8711_i2c_driver);
522#endif
523#if defined(CONFIG_SPI_MASTER)
524 spi_unregister_driver(&wm8711_spi_driver);
525#endif
526}
527module_exit(wm8711_exit);
528
529MODULE_DESCRIPTION("ASoC WM8711 driver");
530MODULE_AUTHOR("Mike Arthur");
531MODULE_LICENSE("GPL");
532
