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linux/sound/soc/codecs/wm9705.c
Liam Girdwood 022658beab ASoC: core: Add support for DAI and machine kcontrols. 
Currently ASoC can only add kcontrols using codec and platform component device
handles. It's also desirable to add kcontrols for DAIs (i.e. McBSP) and for
SoC card machine drivers too. This allows the kcontrol to have a direct handle to
the parent ASoC component DAI/SoC Card/Platform/Codec device and hence easily
get it's private data.

This change makes snd_soc_add_controls() static and wraps it in the folowing
calls (card and dai are new) :-

snd_soc_add_card_controls()
snd_soc_add_codec_controls()
snd_soc_add_dai_controls()
snd_soc_add_platform_controls()

This patch also does a lot of small mechanical changes in individual codec drivers
to replace snd_soc_add_controls() with snd_soc_add_codec_controls().

It also updates the McBSP DAI driver to use snd_soc_add_dai_controls().

Finally, it updates the existing machine drivers that register controls to either :-

1) Use snd_soc_add_card_controls() where no direct codec control is required.
2) Use snd_soc_add_codec_controls() where there is direct codec control.

In the case of 1) above we also update the machine drivers to get the correct
component data pointers from the kcontrol (rather than getting the machine pointer
via the codec pointer).

Signed-off-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-02-04 12:40:11 +00:00

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/*
* wm9705.c -- ALSA Soc WM9705 codec support
*
* Copyright 2008 Ian Molton <spyro@f2s.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; Version 2 of the License only.
*
*/
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/ac97_codec.h>
#include <sound/initval.h>
#include <sound/soc.h>
#include "wm9705.h"
/*
* WM9705 register cache
*/
static const u16 wm9705_reg[] = {
0x6150, 0x8000, 0x8000, 0x8000, /* 0x0 */
0x0000, 0x8000, 0x8008, 0x8008, /* 0x8 */
0x8808, 0x8808, 0x8808, 0x8808, /* 0x10 */
0x8808, 0x0000, 0x8000, 0x0000, /* 0x18 */
0x0000, 0x0000, 0x0000, 0x000f, /* 0x20 */
0x0605, 0x0000, 0xbb80, 0x0000, /* 0x28 */
0x0000, 0xbb80, 0x0000, 0x0000, /* 0x30 */
0x0000, 0x2000, 0x0000, 0x0000, /* 0x38 */
0x0000, 0x0000, 0x0000, 0x0000, /* 0x40 */
0x0000, 0x0000, 0x0000, 0x0000, /* 0x48 */
0x0000, 0x0000, 0x0000, 0x0000, /* 0x50 */
0x0000, 0x0000, 0x0000, 0x0000, /* 0x58 */
0x0000, 0x0000, 0x0000, 0x0000, /* 0x60 */
0x0000, 0x0000, 0x0000, 0x0000, /* 0x68 */
0x0000, 0x0808, 0x0000, 0x0006, /* 0x70 */
0x0000, 0x0000, 0x574d, 0x4c05, /* 0x78 */
};
static const struct snd_kcontrol_new wm9705_snd_ac97_controls[] = {
SOC_DOUBLE("Master Playback Volume", AC97_MASTER, 8, 0, 31, 1),
SOC_SINGLE("Master Playback Switch", AC97_MASTER, 15, 1, 1),
SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1),
SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1),
SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1),
SOC_SINGLE("PCM Playback Switch", AC97_PCM, 15, 1, 1),
SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1),
SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1),
SOC_SINGLE("PCBeep Playback Volume", AC97_PC_BEEP, 1, 15, 1),
SOC_SINGLE("Phone Playback Volume", AC97_PHONE, 0, 31, 1),
SOC_DOUBLE("Line Playback Volume", AC97_LINE, 8, 0, 31, 1),
SOC_DOUBLE("CD Playback Volume", AC97_CD, 8, 0, 31, 1),
SOC_SINGLE("Mic Playback Volume", AC97_MIC, 0, 31, 1),
SOC_SINGLE("Mic 20dB Boost Switch", AC97_MIC, 6, 1, 0),
SOC_DOUBLE("Capture Volume", AC97_REC_GAIN, 8, 0, 15, 0),
SOC_SINGLE("Capture Switch", AC97_REC_GAIN, 15, 1, 1),
};
static const char *wm9705_mic[] = {"Mic 1", "Mic 2"};
static const char *wm9705_rec_sel[] = {"Mic", "CD", "NC", "NC",
"Line", "Stereo Mix", "Mono Mix", "Phone"};
static const struct soc_enum wm9705_enum_mic =
SOC_ENUM_SINGLE(AC97_GENERAL_PURPOSE, 8, 2, wm9705_mic);
static const struct soc_enum wm9705_enum_rec_l =
SOC_ENUM_SINGLE(AC97_REC_SEL, 8, 8, wm9705_rec_sel);
static const struct soc_enum wm9705_enum_rec_r =
SOC_ENUM_SINGLE(AC97_REC_SEL, 0, 8, wm9705_rec_sel);
/* Headphone Mixer */
static const struct snd_kcontrol_new wm9705_hp_mixer_controls[] = {
SOC_DAPM_SINGLE("PCBeep Playback Switch", AC97_PC_BEEP, 15, 1, 1),
SOC_DAPM_SINGLE("CD Playback Switch", AC97_CD, 15, 1, 1),
SOC_DAPM_SINGLE("Mic Playback Switch", AC97_MIC, 15, 1, 1),
SOC_DAPM_SINGLE("Phone Playback Switch", AC97_PHONE, 15, 1, 1),
SOC_DAPM_SINGLE("Line Playback Switch", AC97_LINE, 15, 1, 1),
};
/* Mic source */
static const struct snd_kcontrol_new wm9705_mic_src_controls =
SOC_DAPM_ENUM("Route", wm9705_enum_mic);
/* Capture source */
static const struct snd_kcontrol_new wm9705_capture_selectl_controls =
SOC_DAPM_ENUM("Route", wm9705_enum_rec_l);
static const struct snd_kcontrol_new wm9705_capture_selectr_controls =
SOC_DAPM_ENUM("Route", wm9705_enum_rec_r);
/* DAPM widgets */
static const struct snd_soc_dapm_widget wm9705_dapm_widgets[] = {
SND_SOC_DAPM_MUX("Mic Source", SND_SOC_NOPM, 0, 0,
&wm9705_mic_src_controls),
SND_SOC_DAPM_MUX("Left Capture Source", SND_SOC_NOPM, 0, 0,
&wm9705_capture_selectl_controls),
SND_SOC_DAPM_MUX("Right Capture Source", SND_SOC_NOPM, 0, 0,
&wm9705_capture_selectr_controls),
SND_SOC_DAPM_DAC("Left DAC", "Left HiFi Playback",
SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_DAC("Right DAC", "Right HiFi Playback",
SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_MIXER_NAMED_CTL("HP Mixer", SND_SOC_NOPM, 0, 0,
&wm9705_hp_mixer_controls[0],
ARRAY_SIZE(wm9705_hp_mixer_controls)),
SND_SOC_DAPM_MIXER("Mono Mixer", SND_SOC_NOPM, 0, 0, NULL, 0),
SND_SOC_DAPM_ADC("Left ADC", "Left HiFi Capture", SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_ADC("Right ADC", "Right HiFi Capture", SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_PGA("Headphone PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
SND_SOC_DAPM_PGA("Speaker PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
SND_SOC_DAPM_PGA("Line PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
SND_SOC_DAPM_PGA("Line out PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
SND_SOC_DAPM_PGA("Mono PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
SND_SOC_DAPM_PGA("Phone PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
SND_SOC_DAPM_PGA("Mic PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
SND_SOC_DAPM_PGA("PCBEEP PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
SND_SOC_DAPM_PGA("CD PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
SND_SOC_DAPM_PGA("ADC PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
SND_SOC_DAPM_OUTPUT("HPOUTL"),
SND_SOC_DAPM_OUTPUT("HPOUTR"),
SND_SOC_DAPM_OUTPUT("LOUT"),
SND_SOC_DAPM_OUTPUT("ROUT"),
SND_SOC_DAPM_OUTPUT("MONOOUT"),
SND_SOC_DAPM_INPUT("PHONE"),
SND_SOC_DAPM_INPUT("LINEINL"),
SND_SOC_DAPM_INPUT("LINEINR"),
SND_SOC_DAPM_INPUT("CDINL"),
SND_SOC_DAPM_INPUT("CDINR"),
SND_SOC_DAPM_INPUT("PCBEEP"),
SND_SOC_DAPM_INPUT("MIC1"),
SND_SOC_DAPM_INPUT("MIC2"),
};
/* Audio map
* WM9705 has no switches to disable the route from the inputs to the HP mixer
* so in order to prevent active inputs from forcing the audio outputs to be
* constantly enabled, we use the mutes on those inputs to simulate such
* controls.
*/
static const struct snd_soc_dapm_route wm9705_audio_map[] = {
/* HP mixer */
{"HP Mixer", "PCBeep Playback Switch", "PCBEEP PGA"},
{"HP Mixer", "CD Playback Switch", "CD PGA"},
{"HP Mixer", "Mic Playback Switch", "Mic PGA"},
{"HP Mixer", "Phone Playback Switch", "Phone PGA"},
{"HP Mixer", "Line Playback Switch", "Line PGA"},
{"HP Mixer", NULL, "Left DAC"},
{"HP Mixer", NULL, "Right DAC"},
/* mono mixer */
{"Mono Mixer", NULL, "HP Mixer"},
/* outputs */
{"Headphone PGA", NULL, "HP Mixer"},
{"HPOUTL", NULL, "Headphone PGA"},
{"HPOUTR", NULL, "Headphone PGA"},
{"Line out PGA", NULL, "HP Mixer"},
{"LOUT", NULL, "Line out PGA"},
{"ROUT", NULL, "Line out PGA"},
{"Mono PGA", NULL, "Mono Mixer"},
{"MONOOUT", NULL, "Mono PGA"},
/* inputs */
{"CD PGA", NULL, "CDINL"},
{"CD PGA", NULL, "CDINR"},
{"Line PGA", NULL, "LINEINL"},
{"Line PGA", NULL, "LINEINR"},
{"Phone PGA", NULL, "PHONE"},
{"Mic Source", "Mic 1", "MIC1"},
{"Mic Source", "Mic 2", "MIC2"},
{"Mic PGA", NULL, "Mic Source"},
{"PCBEEP PGA", NULL, "PCBEEP"},
/* Left capture selector */
{"Left Capture Source", "Mic", "Mic Source"},
{"Left Capture Source", "CD", "CDINL"},
{"Left Capture Source", "Line", "LINEINL"},
{"Left Capture Source", "Stereo Mix", "HP Mixer"},
{"Left Capture Source", "Mono Mix", "HP Mixer"},
{"Left Capture Source", "Phone", "PHONE"},
/* Right capture source */
{"Right Capture Source", "Mic", "Mic Source"},
{"Right Capture Source", "CD", "CDINR"},
{"Right Capture Source", "Line", "LINEINR"},
{"Right Capture Source", "Stereo Mix", "HP Mixer"},
{"Right Capture Source", "Mono Mix", "HP Mixer"},
{"Right Capture Source", "Phone", "PHONE"},
{"ADC PGA", NULL, "Left Capture Source"},
{"ADC PGA", NULL, "Right Capture Source"},
/* ADC's */
{"Left ADC", NULL, "ADC PGA"},
{"Right ADC", NULL, "ADC PGA"},
};
/* We use a register cache to enhance read performance. */
static unsigned int ac97_read(struct snd_soc_codec *codec, unsigned int reg)
{
u16 *cache = codec->reg_cache;
switch (reg) {
case AC97_RESET:
case AC97_VENDOR_ID1:
case AC97_VENDOR_ID2:
return soc_ac97_ops.read(codec->ac97, reg);
default:
reg = reg >> 1;
if (reg >= (ARRAY_SIZE(wm9705_reg)))
return -EIO;
return cache[reg];
}
}
static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
unsigned int val)
{
u16 *cache = codec->reg_cache;
soc_ac97_ops.write(codec->ac97, reg, val);
reg = reg >> 1;
if (reg < (ARRAY_SIZE(wm9705_reg)))
cache[reg] = val;
return 0;
}
static int ac97_prepare(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_codec *codec = rtd->codec;
int reg;
u16 vra;
vra = ac97_read(codec, AC97_EXTENDED_STATUS);
ac97_write(codec, AC97_EXTENDED_STATUS, vra | 0x1);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
reg = AC97_PCM_FRONT_DAC_RATE;
else
reg = AC97_PCM_LR_ADC_RATE;
return ac97_write(codec, reg, runtime->rate);
}
#define WM9705_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | \
SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \
SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
SNDRV_PCM_RATE_48000)
static const struct snd_soc_dai_ops wm9705_dai_ops = {
.prepare = ac97_prepare,
};
static struct snd_soc_dai_driver wm9705_dai[] = {
{
.name = "wm9705-hifi",
.ac97_control = 1,
.playback = {
.stream_name = "HiFi Playback",
.channels_min = 1,
.channels_max = 2,
.rates = WM9705_AC97_RATES,
.formats = SND_SOC_STD_AC97_FMTS,
},
.capture = {
.stream_name = "HiFi Capture",
.channels_min = 1,
.channels_max = 2,
.rates = WM9705_AC97_RATES,
.formats = SND_SOC_STD_AC97_FMTS,
},
.ops = &wm9705_dai_ops,
},
{
.name = "wm9705-aux",
.playback = {
.stream_name = "Aux Playback",
.channels_min = 1,
.channels_max = 1,
.rates = WM9705_AC97_RATES,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
}
};
static int wm9705_reset(struct snd_soc_codec *codec)
{
if (soc_ac97_ops.reset) {
soc_ac97_ops.reset(codec->ac97);
if (ac97_read(codec, 0) == wm9705_reg[0])
return 0; /* Success */
}
return -EIO;
}
#ifdef CONFIG_PM
static int wm9705_soc_suspend(struct snd_soc_codec *codec)
{
soc_ac97_ops.write(codec->ac97, AC97_POWERDOWN, 0xffff);
return 0;
}
static int wm9705_soc_resume(struct snd_soc_codec *codec)
{
int i, ret;
u16 *cache = codec->reg_cache;
ret = wm9705_reset(codec);
if (ret < 0) {
printk(KERN_ERR "could not reset AC97 codec\n");
return ret;
}
for (i = 2; i < ARRAY_SIZE(wm9705_reg) << 1; i += 2) {
soc_ac97_ops.write(codec->ac97, i, cache[i>>1]);
}
return 0;
}
#else
#define wm9705_soc_suspend NULL
#define wm9705_soc_resume NULL
#endif
static int wm9705_soc_probe(struct snd_soc_codec *codec)
{
int ret = 0;
printk(KERN_INFO "WM9705 SoC Audio Codec\n");
ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
if (ret < 0) {
printk(KERN_ERR "wm9705: failed to register AC97 codec\n");
return ret;
}
ret = wm9705_reset(codec);
if (ret)
goto reset_err;
snd_soc_add_codec_controls(codec, wm9705_snd_ac97_controls,
ARRAY_SIZE(wm9705_snd_ac97_controls));
return 0;
reset_err:
snd_soc_free_ac97_codec(codec);
return ret;
}
static int wm9705_soc_remove(struct snd_soc_codec *codec)
{
snd_soc_free_ac97_codec(codec);
return 0;
}
static struct snd_soc_codec_driver soc_codec_dev_wm9705 = {
.probe = wm9705_soc_probe,
.remove = wm9705_soc_remove,
.suspend = wm9705_soc_suspend,
.resume = wm9705_soc_resume,
.read = ac97_read,
.write = ac97_write,
.reg_cache_size = ARRAY_SIZE(wm9705_reg),
.reg_word_size = sizeof(u16),
.reg_cache_step = 2,
.reg_cache_default = wm9705_reg,
.dapm_widgets = wm9705_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(wm9705_dapm_widgets),
.dapm_routes = wm9705_audio_map,
.num_dapm_routes = ARRAY_SIZE(wm9705_audio_map),
};
static __devinit int wm9705_probe(struct platform_device *pdev)
{
return snd_soc_register_codec(&pdev->dev,
&soc_codec_dev_wm9705, wm9705_dai, ARRAY_SIZE(wm9705_dai));
}
static int __devexit wm9705_remove(struct platform_device *pdev)
{
snd_soc_unregister_codec(&pdev->dev);
return 0;
}
static struct platform_driver wm9705_codec_driver = {
.driver = {
.name = "wm9705-codec",
.owner = THIS_MODULE,
},
.probe = wm9705_probe,
.remove = __devexit_p(wm9705_remove),
};
module_platform_driver(wm9705_codec_driver);
MODULE_DESCRIPTION("ASoC WM9705 driver");
MODULE_AUTHOR("Ian Molton");
MODULE_LICENSE("GPL v2");
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