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authorShawn Guo <shawn.guo@linaro.org>2012-05-11 22:24:18 +0800
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-05-12 11:04:59 +0100
commite968194b45c4e8077dada75c5bae5660b37628fe (patch)
tree9da66cff5aa5373a694ea049a8a5633f956acdec /sound/soc/mxs
parent08641c7c74dddfcd726512edfaa3b4cbe42e523e (diff)
downloadlinux-e968194b45c4e8077dada75c5bae5660b37628fe.tar.bz2
ASoC: mxs: add device tree support for mxs-sgtl5000
Add device tree probe for mxs-sgtl5000 machine driver. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/mxs')
-rw-r--r--sound/soc/mxs/mxs-sgtl5000.c46
1 files changed, 46 insertions, 0 deletions
diff --git a/sound/soc/mxs/mxs-sgtl5000.c b/sound/soc/mxs/mxs-sgtl5000.c
index e9e6112ff196..3e6e8764b2e6 100644
--- a/sound/soc/mxs/mxs-sgtl5000.c
+++ b/sound/soc/mxs/mxs-sgtl5000.c
@@ -18,6 +18,8 @@
#include <linux/module.h>
#include <linux/device.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
@@ -110,11 +112,48 @@ static struct snd_soc_card mxs_sgtl5000 = {
.num_links = ARRAY_SIZE(mxs_sgtl5000_dai),
};
+static int __devinit mxs_sgtl5000_probe_dt(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ struct device_node *saif_np[2], *codec_np;
+ int i, ret = 0;
+
+ if (!np)
+ return 1; /* no device tree */
+
+ saif_np[0] = of_parse_phandle(np, "saif-controllers", 0);
+ saif_np[1] = of_parse_phandle(np, "saif-controllers", 1);
+ codec_np = of_parse_phandle(np, "audio-codec", 0);
+ if (!saif_np[0] || !saif_np[1] || !codec_np) {
+ dev_err(&pdev->dev, "phandle missing or invalid\n");
+ return -EINVAL;
+ }
+
+ for (i = 0; i < 2; i++) {
+ mxs_sgtl5000_dai[i].codec_name = NULL;
+ mxs_sgtl5000_dai[i].codec_of_node = codec_np;
+ mxs_sgtl5000_dai[i].cpu_dai_name = NULL;
+ mxs_sgtl5000_dai[i].cpu_dai_of_node = saif_np[i];
+ mxs_sgtl5000_dai[i].platform_name = NULL;
+ mxs_sgtl5000_dai[i].platform_of_node = saif_np[i];
+ }
+
+ of_node_put(codec_np);
+ of_node_put(saif_np[0]);
+ of_node_put(saif_np[1]);
+
+ return ret;
+}
+
static int __devinit mxs_sgtl5000_probe(struct platform_device *pdev)
{
struct snd_soc_card *card = &mxs_sgtl5000;
int ret;
+ ret = mxs_sgtl5000_probe_dt(pdev);
+ if (ret < 0)
+ return ret;
+
/*
* Set an init clock(11.28Mhz) for sgtl5000 initialization(i2c r/w).
* The Sgtl5000 sysclk is derived from saif0 mclk and it's range
@@ -148,10 +187,17 @@ static int __devexit mxs_sgtl5000_remove(struct platform_device *pdev)
return 0;
}
+static const struct of_device_id mxs_sgtl5000_dt_ids[] = {
+ { .compatible = "fsl,mxs-audio-sgtl5000", },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, mxs_sgtl5000_dt_ids);
+
static struct platform_driver mxs_sgtl5000_audio_driver = {
.driver = {
.name = "mxs-sgtl5000",
.owner = THIS_MODULE,
+ .of_match_table = mxs_sgtl5000_dt_ids,
},
.probe = mxs_sgtl5000_probe,
.remove = __devexit_p(mxs_sgtl5000_remove),