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Message-Id: <1382529808-28440-1-git-send-email-sre@debian.org>
Date: Wed, 23 Oct 2013 14:03:28 +0200
From: Sebastian Reichel <sre@...ian.org>
To: Sebastian Reichel <sre@...g0.de>,
Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>
Cc: Rob Herring <rob.herring@...xeda.com>,
Pawel Moll <pawel.moll@....com>,
Mark Rutland <mark.rutland@....com>,
Stephen Warren <swarren@...dotorg.org>,
Ian Campbell <ijc+devicetree@...lion.org.uk>,
Rob Landley <rob@...dley.net>,
Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.de>,
Grant Likely <grant.likely@...aro.org>,
Sebastian Reichel <sre@...ian.org>,
Bill Pemberton <wfp5p@...ginia.edu>,
Sachin Kamat <sachin.kamat@...aro.org>,
devicetree@...r.kernel.org, linux-doc@...r.kernel.org,
linux-kernel@...r.kernel.org, alsa-devel@...a-project.org
Subject: [PATCH] ASoC: tpa6130a2: Add device tree support
Add device tree support to tpa6130a2 driver and document the
bindings.
Signed-off-by: Sebastian Reichel <sre@...ian.org>
---
.../devicetree/bindings/sound/tpa6130a2.txt | 27 ++++++++++++++++++
sound/soc/codecs/tpa6130a2.c | 32 ++++++++++++++++------
2 files changed, 50 insertions(+), 9 deletions(-)
create mode 100644 Documentation/devicetree/bindings/sound/tpa6130a2.txt
diff --git a/Documentation/devicetree/bindings/sound/tpa6130a2.txt b/Documentation/devicetree/bindings/sound/tpa6130a2.txt
new file mode 100644
index 0000000..6dfa740
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/tpa6130a2.txt
@@ -0,0 +1,27 @@
+Texas Instruments - tpa6130a2 Codec module
+
+The tpa6130a2 serial control bus communicates through I2C protocols
+
+Required properties:
+
+- compatible - "string" - One of:
+ "ti,tpa6130a2" - TPA6130A2
+ "ti,tpa6140a2" - TPA6140A2
+
+
+- reg - <int> - I2C slave address
+
+- Vdd-supply - <phandle> - power supply regulator
+
+Optional properties:
+
+- power-gpio - gpio pin to power the device
+
+Example:
+
+tpa6130a2: tpa6130a2@60 {
+ compatible = "ti,tpa6130a2";
+ reg = <0x60>;
+ Vdd-supply = <&vmmc2>;
+ power-gpio = <&gpio4 2 GPIO_ACTIVE_HIGH>;
+};
diff --git a/sound/soc/codecs/tpa6130a2.c b/sound/soc/codecs/tpa6130a2.c
index c58bee8..998555f 100644
--- a/sound/soc/codecs/tpa6130a2.c
+++ b/sound/soc/codecs/tpa6130a2.c
@@ -30,6 +30,7 @@
#include <sound/tpa6130a2-plat.h>
#include <sound/soc.h>
#include <sound/tlv.h>
+#include <linux/of_gpio.h>
#include "tpa6130a2.h"
@@ -364,30 +365,33 @@ static int tpa6130a2_probe(struct i2c_client *client,
{
struct device *dev;
struct tpa6130a2_data *data;
- struct tpa6130a2_platform_data *pdata;
+ struct tpa6130a2_platform_data *pdata = client->dev.platform_data;
+ struct device_node *np = client->dev.of_node;
const char *regulator;
int ret;
dev = &client->dev;
- if (client->dev.platform_data == NULL) {
- dev_err(dev, "Platform data not set\n");
- dump_stack();
- return -ENODEV;
- }
-
data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
if (data == NULL) {
dev_err(dev, "Can not allocate memory\n");
return -ENOMEM;
}
+ if (pdata) {
+ data->power_gpio = pdata->power_gpio;
+ } else if (np) {
+ data->power_gpio = of_get_named_gpio(np, "power-gpio", 0);
+ } else {
+ dev_err(dev, "Platform data not set\n");
+ dump_stack();
+ return -ENODEV;
+ }
+
tpa6130a2_client = client;
i2c_set_clientdata(tpa6130a2_client, data);
- pdata = client->dev.platform_data;
- data->power_gpio = pdata->power_gpio;
data->id = id->driver_data;
mutex_init(&data->mutex);
@@ -466,10 +470,20 @@ static const struct i2c_device_id tpa6130a2_id[] = {
};
MODULE_DEVICE_TABLE(i2c, tpa6130a2_id);
+#if IS_ENABLED(CONFIG_OF)
+static const struct of_device_id tpa6130a2_of_match[] = {
+ { .compatible = "ti,tpa6130a2", },
+ { .compatible = "ti,tpa6140a2" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, tpa6130a2_of_match);
+#endif
+
static struct i2c_driver tpa6130a2_i2c_driver = {
.driver = {
.name = "tpa6130a2",
.owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(tpa6130a2_of_match),
},
.probe = tpa6130a2_probe,
.remove = tpa6130a2_remove,
--
1.8.4.rc3
--
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