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ASoC: codecs: Enable AB8500 CODEC for Device Tree

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We continue to allow the AB8500 CODEC to be registered via the AB8500
Multi Functional Device API, only this time we extract its configuration
from the Device Tree binary.

Acked-by: Ola Lilja <ola.o.lilja@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Lee Jones 2012-07-27 08:50:05 +01:00
parent 49731c23be
commit db5c811d40
2 changed files with 85 additions and 2 deletions
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6
include/linux/mfd/abx500/ab8500-codec.h
View File

@ -23,7 +23,8 @@ enum amic_type {
/* Mic-biases */
enum amic_micbias {
AMIC_MICBIAS_VAMIC1,
AMIC_MICBIAS_VAMIC2
AMIC_MICBIAS_VAMIC2,
AMIC_MICBIAS_UNKNOWN
};
/* Bias-voltage */
@ -31,7 +32,8 @@ enum ear_cm_voltage {
EAR_CMV_0_95V,
EAR_CMV_1_10V,
EAR_CMV_1_27V,
EAR_CMV_1_58V
EAR_CMV_1_58V,
EAR_CMV_UNKNOWN
};
/* Analog microphone settings */

81
sound/soc/codecs/ab8500-codec.c
View File

@ -34,6 +34,7 @@
#include <linux/mfd/abx500/ab8500-sysctrl.h>
#include <linux/mfd/abx500/ab8500-codec.h>
#include <linux/regulator/consumer.h>
#include <linux/of.h>
#include <sound/core.h>
#include <sound/pcm.h>
@ -2394,9 +2395,65 @@ struct snd_soc_dai_driver ab8500_codec_dai[] = {
}
};
static void ab8500_codec_of_probe(struct device *dev, struct device_node *np,
struct ab8500_codec_platform_data *codec)
{
u32 value;
if (of_get_property(np, "stericsson,amic1-type-single-ended", NULL))
codec->amics.mic1_type = AMIC_TYPE_SINGLE_ENDED;
else
codec->amics.mic1_type = AMIC_TYPE_DIFFERENTIAL;
if (of_get_property(np, "stericsson,amic2-type-single-ended", NULL))
codec->amics.mic2_type = AMIC_TYPE_SINGLE_ENDED;
else
codec->amics.mic2_type = AMIC_TYPE_DIFFERENTIAL;
/* Has a non-standard Vamic been requested? */
if (of_get_property(np, "stericsson,amic1a-bias-vamic2", NULL))
codec->amics.mic1a_micbias = AMIC_MICBIAS_VAMIC2;
else
codec->amics.mic1a_micbias = AMIC_MICBIAS_VAMIC1;
if (of_get_property(np, "stericsson,amic1b-bias-vamic2", NULL))
codec->amics.mic1b_micbias = AMIC_MICBIAS_VAMIC2;
else
codec->amics.mic1b_micbias = AMIC_MICBIAS_VAMIC1;
if (of_get_property(np, "stericsson,amic2-bias-vamic1", NULL))
codec->amics.mic2_micbias = AMIC_MICBIAS_VAMIC1;
else
codec->amics.mic2_micbias = AMIC_MICBIAS_VAMIC2;
if (!of_property_read_u32(np, "stericsson,earpeice-cmv", &value)) {
switch (value) {
case 950 :
codec->ear_cmv = EAR_CMV_0_95V;
break;
case 1100 :
codec->ear_cmv = EAR_CMV_1_10V;
break;
case 1270 :
codec->ear_cmv = EAR_CMV_1_27V;
break;
case 1580 :
codec->ear_cmv = EAR_CMV_1_58V;
break;
default :
codec->ear_cmv = EAR_CMV_UNKNOWN;
dev_err(dev, "Unsuitable earpiece voltage found in DT\n");
}
} else {
dev_warn(dev, "No earpiece voltage found in DT - using default\n");
codec->ear_cmv = EAR_CMV_0_95V;
}
}
static int ab8500_codec_probe(struct snd_soc_codec *codec)
{
struct device *dev = codec->dev;
struct device_node *np = dev->of_node;
struct ab8500_codec_drvdata *drvdata = dev_get_drvdata(dev);
struct ab8500_platform_data *pdata;
struct filter_control *fc;
@ -2410,6 +2467,30 @@ static int ab8500_codec_probe(struct snd_soc_codec *codec)
/* Inform SoC Core that we have our own I/O arrangements. */
codec->control_data = (void *)true;
if (np) {
if (!pdata)
pdata = devm_kzalloc(dev,
sizeof(struct ab8500_platform_data),
GFP_KERNEL);
if (pdata && !pdata->codec)
pdata->codec
= devm_kzalloc(dev,
sizeof(struct ab8500_codec_platform_data),
GFP_KERNEL);
if (!(pdata && pdata->codec))
return -ENOMEM;
ab8500_codec_of_probe(dev, np, pdata->codec);
} else {
if (!(pdata && pdata->codec)) {
dev_err(dev, "No codec platform data or DT found\n");
return -EINVAL;
}
}
status = ab8500_audio_setup_mics(codec, &pdata->codec->amics);
if (status < 0) {
pr_err("%s: Failed to setup mics (%d)!\n", __func__, status);