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authorLee Jones <lee.jones@linaro.org>2012-07-27 08:50:05 +0100
committerLee Jones <lee.jones@linaro.org>2012-09-20 09:10:57 +0200
commitdb5c811d4044b5bd2ef923c7466bd2720eee0887 (patch)
treefbde5cef6ff2b2518d2a7b5ec29f4c79b3ef59fd /sound
parent49731c23bee88fd76af8cd57b915547b2175a26a (diff)
downloadlinux-db5c811d4044b5bd2ef923c7466bd2720eee0887.tar.bz2
ASoC: codecs: Enable AB8500 CODEC for Device Tree
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>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/codecs/ab8500-codec.c81
1 files changed, 81 insertions, 0 deletions
diff --git a/sound/soc/codecs/ab8500-codec.c b/sound/soc/codecs/ab8500-codec.c
index 23b40186f9b8..07abd09e0b1d 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;
@@ -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);