[PATCH v3 4/6] ASoC: tlv320aic32x4: DT support
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From: Markus Pargmann <hidden>
Date: 2014-01-27 12:03:08
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
Possibly related (same subject, not in this thread)
- 2014-02-03 · Re: [PATCH v3 4/6] ASoC: tlv320aic32x4: DT support · Mark Brown <hidden>
Add DT support for this codec. The bindings differ a bit from the aic3x codec bindings, so I created a new binding documentation. Cc: Rob Herring <redacted> Cc: Pawel Moll <redacted> Cc: Mark Rutland <redacted> Cc: Ian Campbell <redacted> Cc: Kumar Gala <redacted> Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Signed-off-by: Markus Pargmann <redacted> --- .../devicetree/bindings/sound/tlv320aic32x4.txt | 18 ++++++++++++++++ sound/soc/codecs/tlv320aic32x4.c | 25 ++++++++++++++++++++++ 2 files changed, 43 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..db05510
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/tlv320aic32x4.txt@@ -0,0 +1,18 @@ +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: + - reset-gpios: Reset-GPIO phandle with args as described in gpio/gpio.txt + + +Example: + +codec: tlv320aic32x4@18 { + compatible = "ti,tlv320aic32x4"; + reg = <0x18>; +};
diff --git a/sound/soc/codecs/tlv320aic32x4.c b/sound/soc/codecs/tlv320aic32x4.c
index c541213..1dd50e4 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 +670,22 @@ 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, "reset-gpios", 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 +704,12 @@ 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 +741,17 @@ 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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