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ASoC: Ux500: Enable MOP500 driver for Device Tree

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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.

Acked-by: Ola Lilja <ola.o.lilja@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Lee Jones 2012-07-26 16:48:34 +01:00
parent 5ca032ee21
commit 0af541ce47
1 changed files with 40 additions and 0 deletions
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40
sound/soc/ux500/mop500.c
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@ -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>
@ -56,8 +57,35 @@ 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, *msp_np[2];
int i;
msp_np[0] = of_parse_phandle(np, "stericsson,cpu-dai", 0);
msp_np[1] = of_parse_phandle(np, "stericsson,cpu-dai", 1);
codec_np = of_parse_phandle(np, "stericsson,audio-codec", 0);
if (!(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].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;
}
snd_soc_of_parse_card_name(&mop500_card, "stericsson,card-name");
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__);
@ -66,6 +94,12 @@ static int __devinit mop500_probe(struct platform_device *pdev)
mop500_card.dev = &pdev->dev;
if (np) {
ret = mop500_of_probe(pdev, np);
if (ret)
return ret;
}
dev_dbg(&pdev->dev, "%s: Card %s: Set platform drvdata.\n",
__func__, mop500_card.name);
platform_set_drvdata(pdev, &mop500_card);
@ -101,10 +135,16 @@ 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),