[PATCH V2 6/6] ASoC: tlv320aic3x: Add device tree bindings
From: Hebbar, Gururaja <hidden>
Date: 2012-08-27 13:26:44
Also in:
alsa-devel
Subsystem:
open firmware and flattened device tree bindings, sound, sound - soc layer / dynamic audio power management (asoc), texas instruments audio (asoc/hda) drivers, the rest · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Jaroslav Kysela, Takashi Iwai, Liam Girdwood, Mark Brown, Shenghao Ding, Kevin Lu, Baojun Xu, Sen Wang, Linus Torvalds
Device tree support for tlv320aic3x CODEC driver. Signed-off-by: Hebbar, Gururaja <redacted> --- Changes from V1: - use standard DT GPIO reference by phandle to populate gpio based DT parameters :000000 100644 0000000... e7b98f4... A Documentation/devicetree/bindings/sound/tlv320aic3x.txt :100644 100644 01485bd... 5708a97... M sound/soc/codecs/tlv320aic3x.c .../devicetree/bindings/sound/tlv320aic3x.txt | 20 +++++++++++++ sound/soc/codecs/tlv320aic3x.c | 31 ++++++++++++++++++++ 2 files changed, 51 insertions(+), 0 deletions(-)
diff --git a/Documentation/devicetree/bindings/sound/tlv320aic3x.txt b/Documentation/devicetree/bindings/sound/tlv320aic3x.txt
new file mode 100644
index 0000000..e7b98f4
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/tlv320aic3x.txt@@ -0,0 +1,20 @@ +Texas Instruments - tlv320aic3x Codec module + +The tlv320aic3x serial control bus communicates through I2C protocols + +Required properties: +- compatible - "string" - "ti,tlv320aic3x" +- reg - <int> - I2C slave address + + +Optional properties: + +- gpio-reset - gpio pin number used for codec reset +- ai3x-gpio-func - <array of 2 int> - AIC3X_GPIO1 & AIC3X_GPIO2 Functionality + +Example: + +tlv320aic3x: tlv320aic3x at 1b { + compatible = "ti,tlv320aic3x"; + reg = <0x1b>; +};
diff --git a/sound/soc/codecs/tlv320aic3x.c b/sound/soc/codecs/tlv320aic3x.c
index 01485bd..5708a97 100644
--- a/sound/soc/codecs/tlv320aic3x.c
+++ b/sound/soc/codecs/tlv320aic3x.c@@ -40,6 +40,7 @@ #include <linux/i2c.h> #include <linux/gpio.h> #include <linux/regulator/consumer.h> +#include <linux/of_gpio.h> #include <linux/slab.h> #include <sound/core.h> #include <sound/pcm.h>
@@ -1457,6 +1458,8 @@ static int aic3x_i2c_probe(struct i2c_client *i2c, { struct aic3x_pdata *pdata = i2c->dev.platform_data; struct aic3x_priv *aic3x; + struct aic3x_setup_data *ai3x_setup; + struct device_node *np = i2c->dev.of_node; int ret; aic3x = devm_kzalloc(&i2c->dev, sizeof(struct aic3x_priv), GFP_KERNEL);
@@ -1471,6 +1474,25 @@ static int aic3x_i2c_probe(struct i2c_client *i2c, if (pdata) { aic3x->gpio_reset = pdata->gpio_reset; aic3x->setup = pdata->setup; + } else if (np) { + ai3x_setup = devm_kzalloc(&i2c->dev, sizeof(*ai3x_setup), + GFP_KERNEL); + if (ai3x_setup == NULL) { + dev_err(&i2c->dev, "failed to create private data\n"); + return -ENOMEM; + } + + ret = of_get_named_gpio(np, "gpio-reset", 0); + if (ret >= 0) + aic3x->gpio_reset = ret; + else + aic3x->gpio_reset = -1; + + if (of_property_read_u32_array(np, "ai3x-gpio-func", + ai3x_setup->gpio_func, 2) >= 0) { + aic3x->setup = ai3x_setup; + } + } else { aic3x->gpio_reset = -1; }
@@ -1488,11 +1510,20 @@ static int aic3x_i2c_remove(struct i2c_client *client) return 0; } +#if defined(CONFIG_OF) +static const struct of_device_id tlv320aic3x_of_match[] = { + { .compatible = "ti,tlv320aic3x", }, + {}, +}; +MODULE_DEVICE_TABLE(of, tlv320aic3x_of_match); +#endif + /* machine i2c codec control layer */ static struct i2c_driver aic3x_i2c_driver = { .driver = { .name = "tlv320aic3x-codec", .owner = THIS_MODULE, + .of_match_table = of_match_ptr(tlv320aic3x_of_match), }, .probe = aic3x_i2c_probe, .remove = aic3x_i2c_remove,
--
1.7.1