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.
Signed-off-by: Lee Jones <lee.jo...@linaro.org>
---
include/linux/mfd/abx500/ab8500-codec.h | 6 ++-
sound/soc/codecs/ab8500-codec.c | 81 +++++++++++++++++++++++++++++++
2 files changed, 85 insertions(+), 2 deletions(-)
diff --git a/include/linux/mfd/abx500/ab8500-codec.h
b/include/linux/mfd/abx500/ab8500-codec.h
index dc65292..d707941 100644
--- a/include/linux/mfd/abx500/ab8500-codec.h
+++ b/include/linux/mfd/abx500/ab8500-codec.h
@@ -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 */
diff --git a/sound/soc/codecs/ab8500-codec.c b/sound/soc/codecs/ab8500-codec.c
index 23b4018..fa80961 100644
--- a/sound/soc/codecs/ab8500-codec.c
+++ b/sound/soc/codecs/ab8500-codec.c
@@ -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;
@@ -2407,6 +2464,30 @@ static int ab8500_codec_probe(struct snd_soc_codec
*codec)
/* Setup AB8500 according to board-settings */
pdata = (struct ab8500_platform_data *)dev_get_platdata(dev->parent);
+ if (np) {
+ if (!pdata)
+ pdata = devm_kzalloc(dev,
+ sizeof(struct ab8500_platform_data),
+ GFP_KERNEL);
+
+ if (!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;
+ }
+ }
+
/* Inform SoC Core that we have our own I/O arrangements. */
codec->control_data = (void *)true;
--
1.7.9.5
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