Here we ensure that the MOP500 audio driver will be probed during a
Device Tree boot. We also parse the sound node to link together the
codec, dma and the CPU-side Digital Audio Interface.
Signed-off-by: Lee Jones <lee.jo...@linaro.org>
---
sound/soc/ux500/mop500.c | 41 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 41 insertions(+)
diff --git a/sound/soc/ux500/mop500.c b/sound/soc/ux500/mop500.c
index 31c4d26..d84a073 100644
--- a/sound/soc/ux500/mop500.c
+++ b/sound/soc/ux500/mop500.c
@@ -16,6 +16,7 @@
#include <linux/module.h>
#include <linux/io.h>
#include <linux/spi/spi.h>
+#include <linux/of.h>
#include <sound/soc.h>
#include <sound/initval.h>
@@ -56,14 +57,48 @@ static struct snd_soc_card mop500_card = {
.num_links = ARRAY_SIZE(mop500_dai_links),
};
+static int __devinit mop500_of_probe(struct platform_device *pdev,
+ struct device_node *np)
+{
+ struct device_node *codec_np, *platform_np, *msp_np[2];
+ int i;
+
+ platform_np = of_parse_phandle(np, "platform-pcm-dma", 0);
+ msp_np[0] = of_parse_phandle(np, "cpu-dai", 0);
+ msp_np[1] = of_parse_phandle(np, "cpu-dai", 1);
+ codec_np = of_parse_phandle(np, "audio-codec", 0);
+
+ if (!(platform_np && msp_np[0] && msp_np[1] && codec_np)) {
+ dev_err(&pdev->dev, "Phandle missing or invalid\n");
+ return -EINVAL;
+ }
+
+ for (i = 0; i < 2; i++) {
+ mop500_dai_links[i].platform_of_node = platform_np;
+ mop500_dai_links[i].platform_name = NULL;
+ mop500_dai_links[i].cpu_of_node = msp_np[i];
+ mop500_dai_links[i].cpu_dai_name = NULL;
+ mop500_dai_links[i].codec_of_node = codec_np;
+ mop500_dai_links[i].codec_name = NULL;
+ }
+
+ return 0;
+}
static int __devinit mop500_probe(struct platform_device *pdev)
{
+ struct device_node *np = pdev->dev.of_node;
int ret;
pr_debug("%s: Enter.\n", __func__);
dev_dbg(&pdev->dev, "%s: Enter.\n", __func__);
+ if (np) {
+ ret = mop500_of_probe(pdev, np);
+ if (ret)
+ return ret;
+ }
+
mop500_card.dev = &pdev->dev;
dev_dbg(&pdev->dev, "%s: Card %s: Set platform drvdata.\n",
@@ -101,10 +136,16 @@ static int __devexit mop500_remove(struct platform_device
*pdev)
return 0;
}
+static const struct of_device_id snd_soc_mop500_match[] = {
+ { .compatible = "stericsson,snd-soc-mop500", },
+ {},
+};
+
static struct platform_driver snd_soc_mop500_driver = {
.driver = {
.owner = THIS_MODULE,
.name = "snd-soc-mop500",
+ .of_match_table = snd_soc_mop500_match,
},
.probe = mop500_probe,
.remove = __devexit_p(mop500_remove),
--
1.7.9.5
--
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