ASoC: tlv320aic32x4: DT support
Add DT support for this codec. The bindings differ a bit from the aic3x codec bindings, so I created a new binding documentation. Signed-off-by: Markus Pargmann <mpa@pengutronix.de> Signed-off-by: Mark Brown <broonie@linaro.org>
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Documentation/devicetree/bindings/sound/tlv320aic32x4.txt
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18
Documentation/devicetree/bindings/sound/tlv320aic32x4.txt
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@ -0,0 +1,18 @@
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Texas Instruments - tlv320aic32x4 Codec module
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The tlv320aic32x4 serial control bus communicates through I2C protocols
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Required properties:
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- compatible: Should be "ti,tlv320aic32x4"
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- reg: I2C slave address
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Optional properties:
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- reset-gpios: Reset-GPIO phandle with args as described in gpio/gpio.txt
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Example:
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codec: tlv320aic32x4@18 {
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compatible = "ti,tlv320aic32x4";
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reg = <0x18>;
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};
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@ -29,6 +29,7 @@
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#include <linux/delay.h>
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#include <linux/pm.h>
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#include <linux/gpio.h>
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#include <linux/of_gpio.h>
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#include <linux/i2c.h>
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#include <linux/cdev.h>
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#include <linux/slab.h>
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@ -669,11 +670,22 @@ static struct snd_soc_codec_driver soc_codec_dev_aic32x4 = {
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.num_dapm_routes = ARRAY_SIZE(aic32x4_dapm_routes),
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};
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static int aic32x4_parse_dt(struct aic32x4_priv *aic32x4,
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struct device_node *np)
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{
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aic32x4->swapdacs = false;
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aic32x4->micpga_routing = 0;
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aic32x4->rstn_gpio = of_get_named_gpio(np, "reset-gpios", 0);
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return 0;
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}
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static int aic32x4_i2c_probe(struct i2c_client *i2c,
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const struct i2c_device_id *id)
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{
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struct aic32x4_pdata *pdata = i2c->dev.platform_data;
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struct aic32x4_priv *aic32x4;
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struct device_node *np = i2c->dev.of_node;
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int ret;
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aic32x4 = devm_kzalloc(&i2c->dev, sizeof(struct aic32x4_priv),
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@ -692,6 +704,12 @@ static int aic32x4_i2c_probe(struct i2c_client *i2c,
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aic32x4->swapdacs = pdata->swapdacs;
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aic32x4->micpga_routing = pdata->micpga_routing;
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aic32x4->rstn_gpio = pdata->rstn_gpio;
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} else if (np) {
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ret = aic32x4_parse_dt(aic32x4, np);
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if (ret) {
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dev_err(&i2c->dev, "Failed to parse DT node\n");
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return ret;
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}
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} else {
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aic32x4->power_cfg = 0;
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aic32x4->swapdacs = false;
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@ -723,10 +741,17 @@ static const struct i2c_device_id aic32x4_i2c_id[] = {
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};
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MODULE_DEVICE_TABLE(i2c, aic32x4_i2c_id);
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static const struct of_device_id aic32x4_of_id[] = {
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{ .compatible = "ti,tlv320aic32x4", },
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{ /* senitel */ }
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};
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MODULE_DEVICE_TABLE(of, aic32x4_of_id);
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static struct i2c_driver aic32x4_i2c_driver = {
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.driver = {
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.name = "tlv320aic32x4",
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.owner = THIS_MODULE,
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.of_match_table = aic32x4_of_id,
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},
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.probe = aic32x4_i2c_probe,
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.remove = aic32x4_i2c_remove,
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