[PATCH v2 1/9] ASoC: alc5623: Add device tree binding
From: andrew@lunn.ch (Andrew Lunn)
Date: 2014-05-03 18:30:11
Also in:
alsa-devel, linux-devicetree
Subsystem:
open firmware and flattened device tree bindings, sound, sound - soc layer / dynamic audio power management (asoc), the rest · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Jaroslav Kysela, Takashi Iwai, Liam Girdwood, Mark Brown, Linus Torvalds
Possibly related (same subject, not in this thread)
- 2014-05-20 · Re: [PATCH v2 1/9] ASoC: alc5623: Add device tree binding · Mark Brown <hidden>
- 2014-05-04 · Re: [PATCH v2 1/9] ASoC: alc5623: Add device tree binding · Jason Cooper <hidden>
Let the ALC5623 codec be instantiated from DT. Add a simple binding for the additional control register and the jack detect register. Also, add a prompt to the Kconfig entry for this CODEC, so that it can be selected. Since kirkwood-t5325.c will no longer be used, we need to be able to enable the CODEC in the mvebu_v5_defconfig etc. Signed-off-by: Andrew Lunn <andrew@lunn.ch> --- I followed the example of the WM8903 binding which allows register values to be placed into DT. v1->v2: Add redundant OF ID table. Fix binding documentation. Fix check of return code from of_property_read_u32(). Add Kconfig prompt --- .../devicetree/bindings/sound/alc5623.txt | 25 ++++++++++++++++++++++ sound/soc/codecs/Kconfig | 2 +- sound/soc/codecs/alc5623.c | 20 +++++++++++++++++ 3 files changed, 46 insertions(+), 1 deletion(-) create mode 100644 Documentation/devicetree/bindings/sound/alc5623.txt
diff --git a/Documentation/devicetree/bindings/sound/alc5623.txt b/Documentation/devicetree/bindings/sound/alc5623.txt
new file mode 100644
index 000000000000..26c86c98d671
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/alc5623.txt@@ -0,0 +1,25 @@ +ALC5621/ALC5622/ALC5623 audio Codec + +Required properties: + + - compatible: "realtek,alc5623" + - reg: the I2C address of the device. + +Optional properties: + + - add-ctrl: Default register value for Reg-40h, Additional Control + Register. If absent or has the value of 0, the + register is untouched. + + - jack-det-ctrl: Default register value for Reg-5Ah, Jack Detect + Control Register. If absent or has value 0, the + register is untouched. + +Example: + + alc5621: alc5621 at 1a { + compatible = "alc5621"; + reg = <0x1a>; + add-ctrl = <0x3700>; + jack-det-ctrl = <0x4810>; + };
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index f0e840137887..5fefaa8c50ef 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig@@ -269,7 +269,7 @@ config SND_SOC_AK5386 tristate "AKM AK5638 CODEC" config SND_SOC_ALC5623 - tristate + tristate "Realtek ALC5623 CODEC" config SND_SOC_ALC5632 tristate
diff --git a/sound/soc/codecs/alc5623.c b/sound/soc/codecs/alc5623.c
index 2acf82f4a08a..9d0755aa1d16 100644
--- a/sound/soc/codecs/alc5623.c
+++ b/sound/soc/codecs/alc5623.c@@ -23,6 +23,7 @@ #include <linux/i2c.h> #include <linux/regmap.h> #include <linux/slab.h> +#include <linux/of.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/pcm_params.h>
@@ -998,8 +999,10 @@ static int alc5623_i2c_probe(struct i2c_client *client, { struct alc5623_platform_data *pdata; struct alc5623_priv *alc5623; + struct device_node *np; unsigned int vid1, vid2; int ret; + u32 val32; alc5623 = devm_kzalloc(&client->dev, sizeof(struct alc5623_priv), GFP_KERNEL);
@@ -1040,6 +1043,16 @@ static int alc5623_i2c_probe(struct i2c_client *client, if (pdata) { alc5623->add_ctrl = pdata->add_ctrl; alc5623->jack_det_ctrl = pdata->jack_det_ctrl; + } else { + if (client->dev.of_node) { + np = client->dev.of_node; + ret = of_property_read_u32(np, "add-ctrl", &val32); + if (!ret) + alc5623->add_ctrl = val32; + ret = of_property_read_u32(np, "jack-det-ctrl", &val32); + if (!ret) + alc5623->jack_det_ctrl = val32; + } } alc5623->id = vid2;
@@ -1081,11 +1094,18 @@ static const struct i2c_device_id alc5623_i2c_table[] = { }; MODULE_DEVICE_TABLE(i2c, alc5623_i2c_table); +static const struct of_device_id alc5623_of_match[] = { + { .compatible = "realtek,alc5623", }, + { } +}; +MODULE_DEVICE_TABLE(of, alc5623_of_match); + /* i2c codec control layer */ static struct i2c_driver alc5623_i2c_driver = { .driver = { .name = "alc562x-codec", .owner = THIS_MODULE, + .of_match_table = of_match_ptr(alc5623_of_match), }, .probe = alc5623_i2c_probe, .remove = alc5623_i2c_remove,
--
2.0.0.rc0