Add DT support for this codec. The bindings differ a bit from the aic3x
codec bindings, so I created a new binding documentation. The difference
is especially a "ti,ldo-enable" property, which enables the internal
LDOs.
Cc: Rob Herring <robh+dt@xxxxxxxxxx>
Cc: Pawel Moll <pawel.moll@xxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Ian Campbell <ijc+devicetree@xxxxxxxxxxxxxx>
Cc: Kumar Gala <galak@xxxxxxxxxxxxxx>
Cc: devicetree@xxxxxxxxxxxxxxx
Signed-off-by: Markus Pargmann <mpa@xxxxxxxxxxxxxx>
---
.../devicetree/bindings/sound/tlv320aic32x4.txt | 23 +++++++++++++++++
sound/soc/codecs/tlv320aic32x4.c | 30 ++++++++++++++++++++++
2 files changed, 53 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/tlv320aic32x4.txt
diff --git a/Documentation/devicetree/bindings/sound/tlv320aic32x4.txt b/Documentation/devicetree/bindings/sound/tlv320aic32x4.txt
new file mode 100644
index 0000000..5c8fb4a
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/tlv320aic32x4.txt
@@ -0,0 +1,23 @@
+Texas Instruments - tlv320aic32x4 Codec module
+
+The tlv320aic32x4 serial control bus communicates through I2C protocols
+
+Required properties:
+ - compatible: Should be "ti,tlv320aic32x4"
+ - reg: I2C slave address
+
+Optional properties:
+ - ti,ldo-enable: Bool, has to be set when the codec is powered only through the
+ LDOIN pin.
+ - gpio-reset - gpio pin number used for codec reset
+
+
+Example:
+
+codec: tlv320aic32x4@18 {
+ compatible = "ti,tlv320aic32x4";
+ reg = <0x18>;
+ clocks = <&clks 201>;
+ clock-names = "mclk";
+ ti,ldo-enable;
+};
diff --git a/sound/soc/codecs/tlv320aic32x4.c b/sound/soc/codecs/tlv320aic32x4.c
index 1c9f1d8..840f529 100644
--- a/sound/soc/codecs/tlv320aic32x4.c
+++ b/sound/soc/codecs/tlv320aic32x4.c
@@ -29,6 +29,7 @@
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/gpio.h>
+#include <linux/of_gpio.h>
#include <linux/i2c.h>
#include <linux/cdev.h>
#include <linux/slab.h>
@@ -669,11 +670,27 @@ static struct snd_soc_codec_driver soc_codec_dev_aic32x4 = {
.num_dapm_routes = ARRAY_SIZE(aic32x4_dapm_routes),
};
+static int aic32x4_parse_dt(struct aic32x4_priv *aic32x4,
+ struct device_node *np)
+{
+ aic32x4->swapdacs = false;
+ aic32x4->micpga_routing = 0;
+ aic32x4->rstn_gpio = of_get_named_gpio(np, "gpio-reset", 0);
+
+ if (of_property_read_bool(np, "ti,ldo-enable"))
+ aic32x4->power_cfg = AIC32X4_PWR_AIC32X4_LDO_ENABLE;
+ else
+ aic32x4->power_cfg = 0;
+
+ return 0;
+}
+
static int aic32x4_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct aic32x4_pdata *pdata = i2c->dev.platform_data;
struct aic32x4_priv *aic32x4;
+ struct device_node *np = i2c->dev.of_node;
int ret;
aic32x4 = devm_kzalloc(&i2c->dev, sizeof(struct aic32x4_priv),
@@ -692,6 +709,12 @@ static int aic32x4_i2c_probe(struct i2c_client *i2c,
aic32x4->swapdacs = pdata->swapdacs;
aic32x4->micpga_routing = pdata->micpga_routing;
aic32x4->rstn_gpio = pdata->rstn_gpio;
+ } else if (np) {
+ ret = aic32x4_parse_dt(aic32x4, np);
+ if (ret) {
+ dev_err(&i2c->dev, "Failed to parse DT node\n");
+ return ret;
+ }
} else {
aic32x4->power_cfg = 0;
aic32x4->swapdacs = false;
@@ -723,10 +746,17 @@ static const struct i2c_device_id aic32x4_i2c_id[] = {
};
MODULE_DEVICE_TABLE(i2c, aic32x4_i2c_id);
+static const struct of_device_id aic32x4_of_id[] = {
+ { .compatible = "ti,tlv320aic32x4", },
+ { /* senitel */ }
+};
+MODULE_DEVICE_TABLE(of, aic32x4_of_id);
+
static struct i2c_driver aic32x4_i2c_driver = {
.driver = {
.name = "tlv320aic32x4",
.owner = THIS_MODULE,
+ .of_match_table = aic32x4_of_id,
},
.probe = aic32x4_i2c_probe,
.remove = aic32x4_i2c_remove,
--
1.8.5.2
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