2 * wm8776.c -- WM8776 ALSA SoC Audio driver
4 * Copyright 2009 Wolfson Microelectronics plc
6 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
12 * TODO: Input ALC/limiter support
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/initval.h>
30 #include <sound/tlv.h>
34 /* codec private data */
36 enum snd_soc_control_type control_type
;
38 u16 reg_cache
[WM8776_CACHEREGNUM
];
42 static const u16 wm8776_reg
[WM8776_CACHEREGNUM
] = {
43 0x79, 0x79, 0x79, 0xff, 0xff, /* 4 */
44 0xff, 0x00, 0x90, 0x00, 0x00, /* 9 */
45 0x22, 0x22, 0x22, 0x08, 0xcf, /* 14 */
46 0xcf, 0x7b, 0x00, 0x32, 0x00, /* 19 */
50 static int wm8776_reset(struct snd_soc_codec
*codec
)
52 return snd_soc_write(codec
, WM8776_RESET
, 0);
55 static const DECLARE_TLV_DB_SCALE(hp_tlv
, -12100, 100, 1);
56 static const DECLARE_TLV_DB_SCALE(dac_tlv
, -12750, 50, 1);
57 static const DECLARE_TLV_DB_SCALE(adc_tlv
, -10350, 50, 1);
59 static const struct snd_kcontrol_new wm8776_snd_controls
[] = {
60 SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8776_HPLVOL
, WM8776_HPRVOL
,
62 SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8776_DACLVOL
, WM8776_DACRVOL
,
64 SOC_SINGLE("Digital Playback ZC Switch", WM8776_DACCTRL1
, 0, 1, 0),
66 SOC_SINGLE("Deemphasis Switch", WM8776_DACCTRL2
, 0, 1, 0),
68 SOC_DOUBLE_R_TLV("Capture Volume", WM8776_ADCLVOL
, WM8776_ADCRVOL
,
70 SOC_DOUBLE("Capture Switch", WM8776_ADCMUX
, 7, 6, 1, 1),
71 SOC_DOUBLE_R("Capture ZC Switch", WM8776_ADCLVOL
, WM8776_ADCRVOL
, 8, 1, 0),
72 SOC_SINGLE("Capture HPF Switch", WM8776_ADCIFCTRL
, 8, 1, 1),
75 static const struct snd_kcontrol_new inmix_controls
[] = {
76 SOC_DAPM_SINGLE("AIN1 Switch", WM8776_ADCMUX
, 0, 1, 0),
77 SOC_DAPM_SINGLE("AIN2 Switch", WM8776_ADCMUX
, 1, 1, 0),
78 SOC_DAPM_SINGLE("AIN3 Switch", WM8776_ADCMUX
, 2, 1, 0),
79 SOC_DAPM_SINGLE("AIN4 Switch", WM8776_ADCMUX
, 3, 1, 0),
80 SOC_DAPM_SINGLE("AIN5 Switch", WM8776_ADCMUX
, 4, 1, 0),
83 static const struct snd_kcontrol_new outmix_controls
[] = {
84 SOC_DAPM_SINGLE("DAC Switch", WM8776_OUTMUX
, 0, 1, 0),
85 SOC_DAPM_SINGLE("AUX Switch", WM8776_OUTMUX
, 1, 1, 0),
86 SOC_DAPM_SINGLE("Bypass Switch", WM8776_OUTMUX
, 2, 1, 0),
89 static const struct snd_soc_dapm_widget wm8776_dapm_widgets
[] = {
90 SND_SOC_DAPM_INPUT("AUX"),
92 SND_SOC_DAPM_INPUT("AIN1"),
93 SND_SOC_DAPM_INPUT("AIN2"),
94 SND_SOC_DAPM_INPUT("AIN3"),
95 SND_SOC_DAPM_INPUT("AIN4"),
96 SND_SOC_DAPM_INPUT("AIN5"),
98 SND_SOC_DAPM_MIXER("Input Mixer", WM8776_PWRDOWN
, 6, 1,
99 inmix_controls
, ARRAY_SIZE(inmix_controls
)),
101 SND_SOC_DAPM_ADC("ADC", "Capture", WM8776_PWRDOWN
, 1, 1),
102 SND_SOC_DAPM_DAC("DAC", "Playback", WM8776_PWRDOWN
, 2, 1),
104 SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM
, 0, 0,
105 outmix_controls
, ARRAY_SIZE(outmix_controls
)),
107 SND_SOC_DAPM_PGA("Headphone PGA", WM8776_PWRDOWN
, 3, 1, NULL
, 0),
109 SND_SOC_DAPM_OUTPUT("VOUT"),
111 SND_SOC_DAPM_OUTPUT("HPOUTL"),
112 SND_SOC_DAPM_OUTPUT("HPOUTR"),
115 static const struct snd_soc_dapm_route routes
[] = {
116 { "Input Mixer", "AIN1 Switch", "AIN1" },
117 { "Input Mixer", "AIN2 Switch", "AIN2" },
118 { "Input Mixer", "AIN3 Switch", "AIN3" },
119 { "Input Mixer", "AIN4 Switch", "AIN4" },
120 { "Input Mixer", "AIN5 Switch", "AIN5" },
122 { "ADC", NULL
, "Input Mixer" },
124 { "Output Mixer", "DAC Switch", "DAC" },
125 { "Output Mixer", "AUX Switch", "AUX" },
126 { "Output Mixer", "Bypass Switch", "Input Mixer" },
128 { "VOUT", NULL
, "Output Mixer" },
130 { "Headphone PGA", NULL
, "Output Mixer" },
132 { "HPOUTL", NULL
, "Headphone PGA" },
133 { "HPOUTR", NULL
, "Headphone PGA" },
136 static int wm8776_set_fmt(struct snd_soc_dai
*dai
, unsigned int fmt
)
138 struct snd_soc_codec
*codec
= dai
->codec
;
139 int reg
, iface
, master
;
141 switch (dai
->driver
->id
) {
143 reg
= WM8776_DACIFCTRL
;
147 reg
= WM8776_ADCIFCTRL
;
156 switch (fmt
& SND_SOC_DAIFMT_MASTER_MASK
) {
157 case SND_SOC_DAIFMT_CBM_CFM
:
159 case SND_SOC_DAIFMT_CBS_CFS
:
166 switch (fmt
& SND_SOC_DAIFMT_FORMAT_MASK
) {
167 case SND_SOC_DAIFMT_I2S
:
170 case SND_SOC_DAIFMT_RIGHT_J
:
172 case SND_SOC_DAIFMT_LEFT_J
:
175 /* FIXME: CHECK A/B */
176 case SND_SOC_DAIFMT_DSP_A
:
179 case SND_SOC_DAIFMT_DSP_B
:
186 switch (fmt
& SND_SOC_DAIFMT_INV_MASK
) {
187 case SND_SOC_DAIFMT_NB_NF
:
189 case SND_SOC_DAIFMT_IB_IF
:
192 case SND_SOC_DAIFMT_IB_NF
:
195 case SND_SOC_DAIFMT_NB_IF
:
202 /* Finally, write out the values */
203 snd_soc_update_bits(codec
, reg
, 0xf, iface
);
204 snd_soc_update_bits(codec
, WM8776_MSTRCTRL
, 0x180, master
);
209 static int mclk_ratios
[] = {
218 static int wm8776_hw_params(struct snd_pcm_substream
*substream
,
219 struct snd_pcm_hw_params
*params
,
220 struct snd_soc_dai
*dai
)
222 struct snd_soc_codec
*codec
= dai
->codec
;
223 struct wm8776_priv
*wm8776
= snd_soc_codec_get_drvdata(codec
);
224 int iface_reg
, iface
;
225 int ratio_shift
, master
;
230 switch (dai
->driver
->id
) {
232 iface_reg
= WM8776_DACIFCTRL
;
237 iface_reg
= WM8776_ADCIFCTRL
;
246 /* Set word length */
247 switch (params_format(params
)) {
248 case SNDRV_PCM_FORMAT_S16_LE
:
250 case SNDRV_PCM_FORMAT_S20_3LE
:
253 case SNDRV_PCM_FORMAT_S24_LE
:
256 case SNDRV_PCM_FORMAT_S32_LE
:
261 /* Only need to set MCLK/LRCLK ratio if we're master */
262 if (snd_soc_read(codec
, WM8776_MSTRCTRL
) & master
) {
263 for (i
= 0; i
< ARRAY_SIZE(mclk_ratios
); i
++) {
264 if (wm8776
->sysclk
[dai
->driver
->id
] / params_rate(params
)
269 if (i
== ARRAY_SIZE(mclk_ratios
)) {
271 "Unable to configure MCLK ratio %d/%d\n",
272 wm8776
->sysclk
[dai
->driver
->id
], params_rate(params
));
276 dev_dbg(codec
->dev
, "MCLK is %dfs\n", mclk_ratios
[i
]);
278 snd_soc_update_bits(codec
, WM8776_MSTRCTRL
,
279 0x7 << ratio_shift
, i
<< ratio_shift
);
281 dev_dbg(codec
->dev
, "DAI in slave mode\n");
284 snd_soc_update_bits(codec
, iface_reg
, 0x30, iface
);
289 static int wm8776_mute(struct snd_soc_dai
*dai
, int mute
)
291 struct snd_soc_codec
*codec
= dai
->codec
;
293 return snd_soc_write(codec
, WM8776_DACMUTE
, !!mute
);
296 static int wm8776_set_sysclk(struct snd_soc_dai
*dai
,
297 int clk_id
, unsigned int freq
, int dir
)
299 struct snd_soc_codec
*codec
= dai
->codec
;
300 struct wm8776_priv
*wm8776
= snd_soc_codec_get_drvdata(codec
);
302 BUG_ON(dai
->driver
->id
>= ARRAY_SIZE(wm8776
->sysclk
));
304 wm8776
->sysclk
[dai
->driver
->id
] = freq
;
309 static int wm8776_set_bias_level(struct snd_soc_codec
*codec
,
310 enum snd_soc_bias_level level
)
313 case SND_SOC_BIAS_ON
:
315 case SND_SOC_BIAS_PREPARE
:
317 case SND_SOC_BIAS_STANDBY
:
318 if (codec
->bias_level
== SND_SOC_BIAS_OFF
) {
319 /* Disable the global powerdown; DAPM does the rest */
320 snd_soc_update_bits(codec
, WM8776_PWRDOWN
, 1, 0);
324 case SND_SOC_BIAS_OFF
:
325 snd_soc_update_bits(codec
, WM8776_PWRDOWN
, 1, 1);
329 codec
->bias_level
= level
;
333 #define WM8776_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
334 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
335 SNDRV_PCM_RATE_96000)
338 #define WM8776_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
339 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
341 static struct snd_soc_dai_ops wm8776_dac_ops
= {
342 .digital_mute
= wm8776_mute
,
343 .hw_params
= wm8776_hw_params
,
344 .set_fmt
= wm8776_set_fmt
,
345 .set_sysclk
= wm8776_set_sysclk
,
348 static struct snd_soc_dai_ops wm8776_adc_ops
= {
349 .hw_params
= wm8776_hw_params
,
350 .set_fmt
= wm8776_set_fmt
,
351 .set_sysclk
= wm8776_set_sysclk
,
354 static struct snd_soc_dai_driver wm8776_dai
[] = {
356 .name
= "wm8776-hifi-playback",
357 .id
= WM8776_DAI_DAC
,
359 .stream_name
= "Playback",
362 .rates
= WM8776_RATES
,
363 .formats
= WM8776_FORMATS
,
365 .ops
= &wm8776_dac_ops
,
368 .name
= "wm8776-hifi-capture",
369 .id
= WM8776_DAI_ADC
,
371 .stream_name
= "Capture",
374 .rates
= WM8776_RATES
,
375 .formats
= WM8776_FORMATS
,
377 .ops
= &wm8776_adc_ops
,
382 static int wm8776_suspend(struct snd_soc_codec
*codec
, pm_message_t state
)
384 wm8776_set_bias_level(codec
, SND_SOC_BIAS_OFF
);
389 static int wm8776_resume(struct snd_soc_codec
*codec
)
393 u16
*cache
= codec
->reg_cache
;
395 /* Sync reg_cache with the hardware */
396 for (i
= 0; i
< ARRAY_SIZE(wm8776_reg
); i
++) {
397 if (cache
[i
] == wm8776_reg
[i
])
399 data
[0] = (i
<< 1) | ((cache
[i
] >> 8) & 0x0001);
400 data
[1] = cache
[i
] & 0x00ff;
401 codec
->hw_write(codec
->control_data
, data
, 2);
404 wm8776_set_bias_level(codec
, SND_SOC_BIAS_STANDBY
);
409 #define wm8776_suspend NULL
410 #define wm8776_resume NULL
413 static int wm8776_probe(struct snd_soc_codec
*codec
)
415 struct wm8776_priv
*wm8776
= snd_soc_codec_get_drvdata(codec
);
418 codec
->control_data
= wm8776
->control_data
;
419 ret
= snd_soc_codec_set_cache_io(codec
, 7, 9, wm8776
->control_type
);
421 dev_err(codec
->dev
, "Failed to set cache I/O: %d\n", ret
);
425 ret
= wm8776_reset(codec
);
427 dev_err(codec
->dev
, "Failed to issue reset: %d\n", ret
);
431 wm8776_set_bias_level(codec
, SND_SOC_BIAS_STANDBY
);
433 /* Latch the update bits; right channel only since we always
435 snd_soc_update_bits(codec
, WM8776_HPRVOL
, 0x100, 0x100);
436 snd_soc_update_bits(codec
, WM8776_DACRVOL
, 0x100, 0x100);
438 snd_soc_add_controls(codec
, wm8776_snd_controls
,
439 ARRAY_SIZE(wm8776_snd_controls
));
440 snd_soc_dapm_new_controls(codec
, wm8776_dapm_widgets
,
441 ARRAY_SIZE(wm8776_dapm_widgets
));
442 snd_soc_dapm_add_routes(codec
, routes
, ARRAY_SIZE(routes
));
447 /* power down chip */
448 static int wm8776_remove(struct snd_soc_codec
*codec
)
450 wm8776_set_bias_level(codec
, SND_SOC_BIAS_OFF
);
454 static struct snd_soc_codec_driver soc_codec_dev_wm8776
= {
455 .probe
= wm8776_probe
,
456 .remove
= wm8776_remove
,
457 .suspend
= wm8776_suspend
,
458 .resume
= wm8776_resume
,
459 .set_bias_level
= wm8776_set_bias_level
,
460 .reg_cache_size
= sizeof(wm8776_reg
),
461 .reg_word_size
= sizeof(u16
),
462 .reg_cache_default
= wm8776_reg
,
465 #if defined(CONFIG_SPI_MASTER)
466 static int __devinit
wm8776_spi_probe(struct spi_device
*spi
)
468 struct wm8776_priv
*wm8776
;
471 wm8776
= kzalloc(sizeof(struct wm8776_priv
), GFP_KERNEL
);
475 wm8776
->control_data
= spi
;
476 wm8776
->control_type
= SND_SOC_SPI
;
477 spi_set_drvdata(spi
, wm8776
);
479 ret
= snd_soc_register_codec(&spi
->dev
,
480 &soc_codec_dev_wm8776
, wm8776_dai
, ARRAY_SIZE(wm8776_dai
));
486 static int __devexit
wm8776_spi_remove(struct spi_device
*spi
)
488 snd_soc_unregister_codec(&spi
->dev
);
489 kfree(spi_get_drvdata(spi
));
493 static struct spi_driver wm8776_spi_driver
= {
495 .name
= "wm8776-codec",
496 .bus
= &spi_bus_type
,
497 .owner
= THIS_MODULE
,
499 .probe
= wm8776_spi_probe
,
500 .remove
= __devexit_p(wm8776_spi_remove
),
502 #endif /* CONFIG_SPI_MASTER */
504 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
505 static __devinit
int wm8776_i2c_probe(struct i2c_client
*i2c
,
506 const struct i2c_device_id
*id
)
508 struct wm8776_priv
*wm8776
;
511 wm8776
= kzalloc(sizeof(struct wm8776_priv
), GFP_KERNEL
);
515 i2c_set_clientdata(i2c
, wm8776
);
516 wm8776
->control_data
= i2c
;
517 wm8776
->control_type
= SND_SOC_I2C
;
519 ret
= snd_soc_register_codec(&i2c
->dev
,
520 &soc_codec_dev_wm8776
, wm8776_dai
, ARRAY_SIZE(wm8776_dai
));
526 static __devexit
int wm8776_i2c_remove(struct i2c_client
*client
)
528 snd_soc_unregister_codec(&client
->dev
);
529 kfree(i2c_get_clientdata(client
));
533 static const struct i2c_device_id wm8776_i2c_id
[] = {
537 MODULE_DEVICE_TABLE(i2c
, wm8776_i2c_id
);
539 static struct i2c_driver wm8776_i2c_driver
= {
541 .name
= "wm8776-codec",
542 .owner
= THIS_MODULE
,
544 .probe
= wm8776_i2c_probe
,
545 .remove
= __devexit_p(wm8776_i2c_remove
),
546 .id_table
= wm8776_i2c_id
,
550 static int __init
wm8776_modinit(void)
553 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
554 ret
= i2c_add_driver(&wm8776_i2c_driver
);
556 printk(KERN_ERR
"Failed to register wm8776 I2C driver: %d\n",
560 #if defined(CONFIG_SPI_MASTER)
561 ret
= spi_register_driver(&wm8776_spi_driver
);
563 printk(KERN_ERR
"Failed to register wm8776 SPI driver: %d\n",
569 module_init(wm8776_modinit
);
571 static void __exit
wm8776_exit(void)
573 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
574 i2c_del_driver(&wm8776_i2c_driver
);
576 #if defined(CONFIG_SPI_MASTER)
577 spi_unregister_driver(&wm8776_spi_driver
);
580 module_exit(wm8776_exit
);
582 MODULE_DESCRIPTION("ASoC WM8776 driver");
583 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
584 MODULE_LICENSE("GPL");