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authorVinod Koul <vinod.koul@intel.com>2011-02-09 14:44:17 +0530
committerMark Brown <broonie@opensource.wolfsonmicro.com>2011-02-09 23:02:43 +0000
commitfa9879edebdaad4cfcd2dbe3eaa2ba0dc4f0a262 (patch)
tree47032fd4e879f7390999b180f0557261647742f8 /sound/soc/soc-jack.c
parent866fd9366a5b2c7d17eb10f7e7b1c17393ed0beb (diff)
downloadop-kernel-dev-fa9879edebdaad4cfcd2dbe3eaa2ba0dc4f0a262.zip
op-kernel-dev-fa9879edebdaad4cfcd2dbe3eaa2ba0dc4f0a262.tar.gz
ASoC: add support for multiple jack types
This patch adds soc-jack support for adding voltage zones and for detecting jack type Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Harsha Priya <priya.harsha@intel.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/soc-jack.c')
-rw-r--r--sound/soc/soc-jack.c46
1 files changed, 46 insertions, 0 deletions
diff --git a/sound/soc/soc-jack.c b/sound/soc/soc-jack.c
index ac5a5bc..99dbaf7 100644
--- a/sound/soc/soc-jack.c
+++ b/sound/soc/soc-jack.c
@@ -37,6 +37,7 @@ int snd_soc_jack_new(struct snd_soc_codec *codec, const char *id, int type,
{
jack->codec = codec;
INIT_LIST_HEAD(&jack->pins);
+ INIT_LIST_HEAD(&jack->jack_zones);
BLOCKING_INIT_NOTIFIER_HEAD(&jack->notifier);
return snd_jack_new(codec->card->snd_card, id, type, &jack->jack);
@@ -112,6 +113,51 @@ out:
EXPORT_SYMBOL_GPL(snd_soc_jack_report);
/**
+ * snd_soc_jack_add_zones - Associate voltage zones with jack
+ *
+ * @jack: ASoC jack
+ * @count: Number of zones
+ * @zone: Array of zones
+ *
+ * After this function has been called the zones specified in the
+ * array will be associated with the jack.
+ */
+int snd_soc_jack_add_zones(struct snd_soc_jack *jack, int count,
+ struct snd_soc_jack_zone *zones)
+{
+ int i;
+
+ for (i = 0; i < count; i++) {
+ INIT_LIST_HEAD(&zones[i].list);
+ list_add(&(zones[i].list), &jack->jack_zones);
+ }
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_jack_add_zones);
+
+/**
+ * snd_soc_jack_get_type - Based on the mic bias value, this function returns
+ * the type of jack from the zones delcared in the jack type
+ *
+ * @micbias_voltage: mic bias voltage at adc channel when jack is plugged in
+ *
+ * Based on the mic bias value passed, this function helps identify
+ * the type of jack from the already delcared jack zones
+ */
+int snd_soc_jack_get_type(struct snd_soc_jack *jack, int micbias_voltage)
+{
+ struct snd_soc_jack_zone *zone;
+
+ list_for_each_entry(zone, &jack->jack_zones, list) {
+ if (micbias_voltage >= zone->min_mv &&
+ micbias_voltage < zone->max_mv)
+ return zone->jack_type;
+ }
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_jack_get_type);
+
+/**
* snd_soc_jack_add_pins - Associate DAPM pins with an ASoC jack
*
* @jack: ASoC jack
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