2 * wm8711.c -- WM8711 ALSA SoC Audio driver
4 * Copyright 2006 Wolfson Microelectronics
6 * Author: Mike Arthur <linux@wolfsonmicro.com>
8 * Based on wm8731.c by Richard Purdie
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
15 #include <linux/module.h>
16 #include <linux/moduleparam.h>
17 #include <linux/init.h>
18 #include <linux/delay.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 <sound/core.h>
25 #include <sound/pcm.h>
26 #include <sound/pcm_params.h>
27 #include <sound/soc.h>
28 #include <sound/soc-dapm.h>
29 #include <sound/tlv.h>
30 #include <sound/initval.h>
34 /* codec private data */
36 enum snd_soc_control_type bus_type
;
37 u16 reg_cache
[WM8711_CACHEREGNUM
];
42 * wm8711 register cache
43 * We can't read the WM8711 register space when we are
44 * using 2 wire for device control, so we cache them instead.
45 * There is no point in caching the reset register
47 static const u16 wm8711_reg
[WM8711_CACHEREGNUM
] = {
48 0x0079, 0x0079, 0x000a, 0x0008,
49 0x009f, 0x000a, 0x0000, 0x0000
52 #define wm8711_reset(c) snd_soc_write(c, WM8711_RESET, 0)
54 static const DECLARE_TLV_DB_SCALE(out_tlv
, -12100, 100, 1);
56 static const struct snd_kcontrol_new wm8711_snd_controls
[] = {
58 SOC_DOUBLE_R_TLV("Master Playback Volume", WM8711_LOUT1V
, WM8711_ROUT1V
,
60 SOC_DOUBLE_R("Master Playback ZC Switch", WM8711_LOUT1V
, WM8711_ROUT1V
,
66 static const struct snd_kcontrol_new wm8711_output_mixer_controls
[] = {
67 SOC_DAPM_SINGLE("Line Bypass Switch", WM8711_APANA
, 3, 1, 0),
68 SOC_DAPM_SINGLE("HiFi Playback Switch", WM8711_APANA
, 4, 1, 0),
71 static const struct snd_soc_dapm_widget wm8711_dapm_widgets
[] = {
72 SND_SOC_DAPM_MIXER("Output Mixer", WM8711_PWR
, 4, 1,
73 &wm8711_output_mixer_controls
[0],
74 ARRAY_SIZE(wm8711_output_mixer_controls
)),
75 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8711_PWR
, 3, 1),
76 SND_SOC_DAPM_OUTPUT("LOUT"),
77 SND_SOC_DAPM_OUTPUT("LHPOUT"),
78 SND_SOC_DAPM_OUTPUT("ROUT"),
79 SND_SOC_DAPM_OUTPUT("RHPOUT"),
82 static const struct snd_soc_dapm_route intercon
[] = {
84 {"Output Mixer", "Line Bypass Switch", "Line Input"},
85 {"Output Mixer", "HiFi Playback Switch", "DAC"},
88 {"RHPOUT", NULL
, "Output Mixer"},
89 {"ROUT", NULL
, "Output Mixer"},
90 {"LHPOUT", NULL
, "Output Mixer"},
91 {"LOUT", NULL
, "Output Mixer"},
94 static int wm8711_add_widgets(struct snd_soc_codec
*codec
)
96 snd_soc_dapm_new_controls(codec
, wm8711_dapm_widgets
,
97 ARRAY_SIZE(wm8711_dapm_widgets
));
99 snd_soc_dapm_add_routes(codec
, intercon
, ARRAY_SIZE(intercon
));
113 /* codec mclk clock divider coefficients */
114 static const struct _coeff_div coeff_div
[] = {
116 {12288000, 48000, 256, 0x0, 0x0, 0x0},
117 {18432000, 48000, 384, 0x0, 0x1, 0x0},
118 {12000000, 48000, 250, 0x0, 0x0, 0x1},
121 {12288000, 32000, 384, 0x6, 0x0, 0x0},
122 {18432000, 32000, 576, 0x6, 0x1, 0x0},
123 {12000000, 32000, 375, 0x6, 0x0, 0x1},
126 {12288000, 8000, 1536, 0x3, 0x0, 0x0},
127 {18432000, 8000, 2304, 0x3, 0x1, 0x0},
128 {11289600, 8000, 1408, 0xb, 0x0, 0x0},
129 {16934400, 8000, 2112, 0xb, 0x1, 0x0},
130 {12000000, 8000, 1500, 0x3, 0x0, 0x1},
133 {12288000, 96000, 128, 0x7, 0x0, 0x0},
134 {18432000, 96000, 192, 0x7, 0x1, 0x0},
135 {12000000, 96000, 125, 0x7, 0x0, 0x1},
138 {11289600, 44100, 256, 0x8, 0x0, 0x0},
139 {16934400, 44100, 384, 0x8, 0x1, 0x0},
140 {12000000, 44100, 272, 0x8, 0x1, 0x1},
143 {11289600, 88200, 128, 0xf, 0x0, 0x0},
144 {16934400, 88200, 192, 0xf, 0x1, 0x0},
145 {12000000, 88200, 136, 0xf, 0x1, 0x1},
148 static inline int get_coeff(int mclk
, int rate
)
152 for (i
= 0; i
< ARRAY_SIZE(coeff_div
); i
++) {
153 if (coeff_div
[i
].rate
== rate
&& coeff_div
[i
].mclk
== mclk
)
159 static int wm8711_hw_params(struct snd_pcm_substream
*substream
,
160 struct snd_pcm_hw_params
*params
,
161 struct snd_soc_dai
*dai
)
163 struct snd_soc_codec
*codec
= dai
->codec
;
164 struct wm8711_priv
*wm8711
= snd_soc_codec_get_drvdata(codec
);
165 u16 iface
= snd_soc_read(codec
, WM8711_IFACE
) & 0xfffc;
166 int i
= get_coeff(wm8711
->sysclk
, params_rate(params
));
167 u16 srate
= (coeff_div
[i
].sr
<< 2) |
168 (coeff_div
[i
].bosr
<< 1) | coeff_div
[i
].usb
;
170 snd_soc_write(codec
, WM8711_SRATE
, srate
);
173 switch (params_format(params
)) {
174 case SNDRV_PCM_FORMAT_S16_LE
:
176 case SNDRV_PCM_FORMAT_S20_3LE
:
179 case SNDRV_PCM_FORMAT_S24_LE
:
184 snd_soc_write(codec
, WM8711_IFACE
, iface
);
188 static int wm8711_pcm_prepare(struct snd_pcm_substream
*substream
,
189 struct snd_soc_dai
*dai
)
191 struct snd_soc_codec
*codec
= dai
->codec
;
194 snd_soc_write(codec
, WM8711_ACTIVE
, 0x0001);
199 static void wm8711_shutdown(struct snd_pcm_substream
*substream
,
200 struct snd_soc_dai
*dai
)
202 struct snd_soc_codec
*codec
= dai
->codec
;
205 if (!codec
->active
) {
207 snd_soc_write(codec
, WM8711_ACTIVE
, 0x0);
211 static int wm8711_mute(struct snd_soc_dai
*dai
, int mute
)
213 struct snd_soc_codec
*codec
= dai
->codec
;
214 u16 mute_reg
= snd_soc_read(codec
, WM8711_APDIGI
) & 0xfff7;
217 snd_soc_write(codec
, WM8711_APDIGI
, mute_reg
| 0x8);
219 snd_soc_write(codec
, WM8711_APDIGI
, mute_reg
);
224 static int wm8711_set_dai_sysclk(struct snd_soc_dai
*codec_dai
,
225 int clk_id
, unsigned int freq
, int dir
)
227 struct snd_soc_codec
*codec
= codec_dai
->codec
;
228 struct wm8711_priv
*wm8711
= snd_soc_codec_get_drvdata(codec
);
236 wm8711
->sysclk
= freq
;
242 static int wm8711_set_dai_fmt(struct snd_soc_dai
*codec_dai
,
245 struct snd_soc_codec
*codec
= codec_dai
->codec
;
248 /* set master/slave audio interface */
249 switch (fmt
& SND_SOC_DAIFMT_MASTER_MASK
) {
250 case SND_SOC_DAIFMT_CBM_CFM
:
253 case SND_SOC_DAIFMT_CBS_CFS
:
259 /* interface format */
260 switch (fmt
& SND_SOC_DAIFMT_FORMAT_MASK
) {
261 case SND_SOC_DAIFMT_I2S
:
264 case SND_SOC_DAIFMT_RIGHT_J
:
266 case SND_SOC_DAIFMT_LEFT_J
:
269 case SND_SOC_DAIFMT_DSP_A
:
272 case SND_SOC_DAIFMT_DSP_B
:
279 /* clock inversion */
280 switch (fmt
& SND_SOC_DAIFMT_INV_MASK
) {
281 case SND_SOC_DAIFMT_NB_NF
:
283 case SND_SOC_DAIFMT_IB_IF
:
286 case SND_SOC_DAIFMT_IB_NF
:
289 case SND_SOC_DAIFMT_NB_IF
:
297 snd_soc_write(codec
, WM8711_IFACE
, iface
);
302 static int wm8711_set_bias_level(struct snd_soc_codec
*codec
,
303 enum snd_soc_bias_level level
)
305 u16 reg
= snd_soc_read(codec
, WM8711_PWR
) & 0xff7f;
308 case SND_SOC_BIAS_ON
:
309 snd_soc_write(codec
, WM8711_PWR
, reg
);
311 case SND_SOC_BIAS_PREPARE
:
313 case SND_SOC_BIAS_STANDBY
:
314 snd_soc_write(codec
, WM8711_PWR
, reg
| 0x0040);
316 case SND_SOC_BIAS_OFF
:
317 snd_soc_write(codec
, WM8711_ACTIVE
, 0x0);
318 snd_soc_write(codec
, WM8711_PWR
, 0xffff);
321 codec
->bias_level
= level
;
325 #define WM8711_RATES SNDRV_PCM_RATE_8000_96000
327 #define WM8711_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
328 SNDRV_PCM_FMTBIT_S24_LE)
330 static struct snd_soc_dai_ops wm8711_ops
= {
331 .prepare
= wm8711_pcm_prepare
,
332 .hw_params
= wm8711_hw_params
,
333 .shutdown
= wm8711_shutdown
,
334 .digital_mute
= wm8711_mute
,
335 .set_sysclk
= wm8711_set_dai_sysclk
,
336 .set_fmt
= wm8711_set_dai_fmt
,
339 static struct snd_soc_dai_driver wm8711_dai
= {
340 .name
= "wm8711-hifi",
342 .stream_name
= "Playback",
345 .rates
= WM8711_RATES
,
346 .formats
= WM8711_FORMATS
,
351 static int wm8711_suspend(struct snd_soc_codec
*codec
, pm_message_t state
)
353 snd_soc_write(codec
, WM8711_ACTIVE
, 0x0);
354 wm8711_set_bias_level(codec
, SND_SOC_BIAS_OFF
);
358 static int wm8711_resume(struct snd_soc_codec
*codec
)
362 u16
*cache
= codec
->reg_cache
;
364 /* Sync reg_cache with the hardware */
365 for (i
= 0; i
< ARRAY_SIZE(wm8711_reg
); i
++) {
366 data
[0] = (i
<< 1) | ((cache
[i
] >> 8) & 0x0001);
367 data
[1] = cache
[i
] & 0x00ff;
368 codec
->hw_write(codec
->control_data
, data
, 2);
370 wm8711_set_bias_level(codec
, SND_SOC_BIAS_STANDBY
);
375 static int wm8711_probe(struct snd_soc_codec
*codec
)
377 struct wm8711_priv
*wm8711
= snd_soc_codec_get_drvdata(codec
);
380 ret
= snd_soc_codec_set_cache_io(codec
, 7, 9, wm8711
->bus_type
);
382 dev_err(codec
->dev
, "Failed to set cache I/O: %d\n", ret
);
386 ret
= wm8711_reset(codec
);
388 dev_err(codec
->dev
, "Failed to issue reset\n");
392 wm8711_set_bias_level(codec
, SND_SOC_BIAS_STANDBY
);
394 /* Latch the update bits */
395 reg
= snd_soc_read(codec
, WM8711_LOUT1V
);
396 snd_soc_write(codec
, WM8711_LOUT1V
, reg
| 0x0100);
397 reg
= snd_soc_read(codec
, WM8711_ROUT1V
);
398 snd_soc_write(codec
, WM8711_ROUT1V
, reg
| 0x0100);
400 snd_soc_add_controls(codec
, wm8711_snd_controls
,
401 ARRAY_SIZE(wm8711_snd_controls
));
402 wm8711_add_widgets(codec
);
408 /* power down chip */
409 static int wm8711_remove(struct snd_soc_codec
*codec
)
411 wm8711_set_bias_level(codec
, SND_SOC_BIAS_OFF
);
415 static struct snd_soc_codec_driver soc_codec_dev_wm8711
= {
416 .probe
= wm8711_probe
,
417 .remove
= wm8711_remove
,
418 .suspend
= wm8711_suspend
,
419 .resume
= wm8711_resume
,
420 .set_bias_level
= wm8711_set_bias_level
,
421 .reg_cache_size
= ARRAY_SIZE(wm8711_reg
),
422 .reg_word_size
= sizeof(u16
),
423 .reg_cache_default
= wm8711_reg
,
426 #if defined(CONFIG_SPI_MASTER)
427 static int __devinit
wm8711_spi_probe(struct spi_device
*spi
)
429 struct wm8711_priv
*wm8711
;
432 wm8711
= kzalloc(sizeof(struct wm8711_priv
), GFP_KERNEL
);
436 spi_set_drvdata(spi
, wm8711
);
437 wm8711
->bus_type
= SND_SOC_SPI
;
439 ret
= snd_soc_register_codec(&spi
->dev
,
440 &soc_codec_dev_wm8711
, &wm8711_dai
, 1);
446 static int __devexit
wm8711_spi_remove(struct spi_device
*spi
)
448 snd_soc_unregister_codec(&spi
->dev
);
449 kfree(spi_get_drvdata(spi
));
453 static struct spi_driver wm8711_spi_driver
= {
455 .name
= "wm8711-codec",
456 .owner
= THIS_MODULE
,
458 .probe
= wm8711_spi_probe
,
459 .remove
= __devexit_p(wm8711_spi_remove
),
461 #endif /* CONFIG_SPI_MASTER */
463 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
464 static __devinit
int wm8711_i2c_probe(struct i2c_client
*client
,
465 const struct i2c_device_id
*id
)
467 struct wm8711_priv
*wm8711
;
470 wm8711
= kzalloc(sizeof(struct wm8711_priv
), GFP_KERNEL
);
474 i2c_set_clientdata(client
, wm8711
);
475 wm8711
->bus_type
= SND_SOC_I2C
;
477 ret
= snd_soc_register_codec(&client
->dev
,
478 &soc_codec_dev_wm8711
, &wm8711_dai
, 1);
484 static __devexit
int wm8711_i2c_remove(struct i2c_client
*client
)
486 snd_soc_unregister_codec(&client
->dev
);
487 kfree(i2c_get_clientdata(client
));
491 static const struct i2c_device_id wm8711_i2c_id
[] = {
495 MODULE_DEVICE_TABLE(i2c
, wm8711_i2c_id
);
497 static struct i2c_driver wm8711_i2c_driver
= {
499 .name
= "wm8711-codec",
500 .owner
= THIS_MODULE
,
502 .probe
= wm8711_i2c_probe
,
503 .remove
= __devexit_p(wm8711_i2c_remove
),
504 .id_table
= wm8711_i2c_id
,
508 static int __init
wm8711_modinit(void)
511 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
512 ret
= i2c_add_driver(&wm8711_i2c_driver
);
514 printk(KERN_ERR
"Failed to register WM8711 I2C driver: %d\n",
518 #if defined(CONFIG_SPI_MASTER)
519 ret
= spi_register_driver(&wm8711_spi_driver
);
521 printk(KERN_ERR
"Failed to register WM8711 SPI driver: %d\n",
527 module_init(wm8711_modinit
);
529 static void __exit
wm8711_exit(void)
531 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
532 i2c_del_driver(&wm8711_i2c_driver
);
534 #if defined(CONFIG_SPI_MASTER)
535 spi_unregister_driver(&wm8711_spi_driver
);
538 module_exit(wm8711_exit
);
540 MODULE_DESCRIPTION("ASoC WM8711 driver");
541 MODULE_AUTHOR("Mike Arthur");
542 MODULE_LICENSE("GPL");