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authorAnatol Pomozov <anatol.pomozov@gmail.com>2015-01-22 15:47:24 -0800
committerMark Brown <broonie@kernel.org>2015-01-27 18:32:14 +0000
commit39552d7ad1409d07ef278a97adbfbee02a272d25 (patch)
treecc3170e07494a58c75201a35221e36302ab77610 /sound/soc
parentddf9ea21f5fa0832c9711ae13dd467d1f5c4cd87 (diff)
ASoC: ts3a227e: Add dts property that allows to specify micbias voltage
The voltage controls key press threshold. Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc')
-rw-r--r--sound/soc/codecs/ts3a227e.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/sound/soc/codecs/ts3a227e.c b/sound/soc/codecs/ts3a227e.c
index b55034f63de5..65f8ec2094fb 100644
--- a/sound/soc/codecs/ts3a227e.c
+++ b/sound/soc/codecs/ts3a227e.c
@@ -79,6 +79,10 @@ static const int ts3a227e_buttons[] = {
/* TS3A227E_REG_SETTING_2 0x05 */
#define KP_ENABLE 0x04
+/* TS3A227E_REG_SETTING_3 0x06 */
+#define MICBIAS_SETTING_SFT (3)
+#define MICBIAS_SETTING_MASK (0x7 << MICBIAS_SETTING_SFT)
+
/* TS3A227E_REG_ACCESSORY_STATUS 0x0b */
#define TYPE_3_POLE 0x01
#define TYPE_4_POLE_OMTP 0x02
@@ -248,6 +252,21 @@ static const struct regmap_config ts3a227e_regmap_config = {
.num_reg_defaults = ARRAY_SIZE(ts3a227e_reg_defaults),
};
+static int ts3a227e_parse_dt(struct ts3a227e *ts3a227e, struct device_node *np)
+{
+ u32 micbias;
+ int err;
+
+ err = of_property_read_u32(np, "ti,micbias", &micbias);
+ if (!err) {
+ regmap_update_bits(ts3a227e->regmap, TS3A227E_REG_SETTING_3,
+ MICBIAS_SETTING_MASK,
+ (micbias & 0x07) << MICBIAS_SETTING_SFT);
+ }
+
+ return 0;
+}
+
static int ts3a227e_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
@@ -265,6 +284,14 @@ static int ts3a227e_i2c_probe(struct i2c_client *i2c,
if (IS_ERR(ts3a227e->regmap))
return PTR_ERR(ts3a227e->regmap);
+ if (dev->of_node) {
+ ret = ts3a227e_parse_dt(ts3a227e, dev->of_node);
+ if (ret) {
+ dev_err(dev, "Failed to parse device tree: %d\n", ret);
+ return ret;
+ }
+ }
+
ret = devm_request_threaded_irq(dev, i2c->irq, NULL, ts3a227e_interrupt,
IRQF_TRIGGER_LOW | IRQF_ONESHOT,
"TS3A227E", ts3a227e);