ASoC: tegra: add device tree support for TrimSlice

This binding doesn't include the nvidia,model or nvidia,audio-routing
properties the other Tegra audio DT bindings have, because this binding
is targetted at a single machine, rather than for any machine using the
tlv320aic23 codec.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --git a/Documentation/devicetree/bindings/sound/tegra-audio-trimslice.txt b/Documentation/devicetree/bindings/sound/tegra-audio-trimslice.txt
new file mode 100644 (file)
index 0000000..04b14cf
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/tegra-audio-trimslice.txt
@@ -0,0 +1,14 @@
+NVIDIA Tegra audio complex for TrimSlice
+
+Required properties:
+- compatible : "nvidia,tegra-audio-trimslice"
+- nvidia,i2s-controller : The phandle of the Tegra I2S1 controller
+- nvidia,audio-codec : The phandle of the WM8903 audio codec
+
+Example:
+
+sound {
+       compatible = "nvidia,tegra-audio-trimslice";
+       nvidia,i2s-controller = <&tegra_i2s1>;
+       nvidia,audio-codec = <&codec>;
+};

diff --git a/sound/soc/tegra/trimslice.c b/sound/soc/tegra/trimslice.c
index 0fd115e..4a8d5b6 100644 (file)
--- a/sound/soc/tegra/trimslice.c
+++ b/sound/soc/tegra/trimslice.c
@@ -27,6 +27,7 @@
 #include <asm/mach-types.h>
 
 #include <linux/module.h>
+#include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 
@@ -149,6 +150,32 @@ static __devinit int tegra_snd_trimslice_probe(struct platform_device *pdev)
                goto err;
        }
 
+       if (pdev->dev.of_node) {
+               trimslice_tlv320aic23_dai.codec_name = NULL;
+               trimslice_tlv320aic23_dai.codec_of_node = of_parse_phandle(
+                               pdev->dev.of_node, "nvidia,audio-codec", 0);
+               if (!trimslice_tlv320aic23_dai.codec_of_node) {
+                       dev_err(&pdev->dev,
+                               "Property 'nvidia,audio-codec' missing or invalid\n");
+                       ret = -EINVAL;
+                       goto err;
+               }
+
+               trimslice_tlv320aic23_dai.cpu_dai_name = NULL;
+               trimslice_tlv320aic23_dai.cpu_dai_of_node = of_parse_phandle(
+                               pdev->dev.of_node, "nvidia,i2s-controller", 0);
+               if (!trimslice_tlv320aic23_dai.cpu_dai_of_node) {
+                       dev_err(&pdev->dev,
+                               "Property 'nvidia,i2s-controller' missing or invalid\n");
+                       ret = -EINVAL;
+                       goto err;
+               }
+
+               trimslice_tlv320aic23_dai.platform_name = NULL;
+               trimslice_tlv320aic23_dai.platform_of_node =
+                               trimslice_tlv320aic23_dai.cpu_dai_of_node;
+       }
+
        ret = tegra_asoc_utils_init(&trimslice->util_data, &pdev->dev);
        if (ret)
                goto err;
@@ -184,10 +211,17 @@ static int __devexit tegra_snd_trimslice_remove(struct platform_device *pdev)
        return 0;
 }
 
+static const struct of_device_id trimslice_of_match[] __devinitconst = {
+       { .compatible = "nvidia,tegra-audio-trimslice", },
+       {},
+};
+MODULE_DEVICE_TABLE(of, trimslice_of_match);
+
 static struct platform_driver tegra_snd_trimslice_driver = {
        .driver = {
                .name = DRV_NAME,
                .owner = THIS_MODULE,
+               .of_match_table = trimslice_of_match,
        },
        .probe = tegra_snd_trimslice_probe,
        .remove = __devexit_p(tegra_snd_trimslice_remove),