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authorJean-Francois Moine <moinejf@free.fr>2013-08-14 12:27:33 +0200
committerMark Brown <broonie@linaro.org>2013-08-22 19:58:14 +0100
commiteb63231830360f5acfea5dd2b545d7a14476bc3a (patch)
tree977dfa41e24df445afb6341d9341003fc96f2cbd /sound/soc/kirkwood
parente4065f3ff122e35cfc760d9a712564f3d9ef3a49 (diff)
downloadlinux-eb63231830360f5acfea5dd2b545d7a14476bc3a.tar.bz2
ASoc: kirkwood: add DT support to the mvebu audio subsystem
This patch adds DT support to the audio subsystem of the mvebu family (Kirkwood, Dove, Armada 370). Signed-off-by: Jean-Francois Moine <moinejf@free.fr> Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'sound/soc/kirkwood')
-rw-r--r--sound/soc/kirkwood/kirkwood-i2s.c26
1 files changed, 20 insertions, 6 deletions
diff --git a/sound/soc/kirkwood/kirkwood-i2s.c b/sound/soc/kirkwood/kirkwood-i2s.c
index e5f3f7a9ea26..7fce340ab3ef 100644
--- a/sound/soc/kirkwood/kirkwood-i2s.c
+++ b/sound/soc/kirkwood/kirkwood-i2s.c
@@ -22,6 +22,8 @@
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <linux/platform_data/asoc-kirkwood.h>
+#include <linux/of.h>
+
#include "kirkwood.h"
#define DRV_NAME "mvebu-audio"
@@ -453,6 +455,7 @@ static int kirkwood_i2s_dev_probe(struct platform_device *pdev)
struct snd_soc_dai_driver *soc_dai = &kirkwood_i2s_dai;
struct kirkwood_dma_data *priv;
struct resource *mem;
+ struct device_node *np = pdev->dev.of_node;
int err;
priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
@@ -473,14 +476,16 @@ static int kirkwood_i2s_dev_probe(struct platform_device *pdev)
return -ENXIO;
}
- if (!data) {
- dev_err(&pdev->dev, "no platform data ?!\n");
+ if (np) {
+ priv->burst = 128; /* might be 32 or 128 */
+ } else if (data) {
+ priv->burst = data->burst;
+ } else {
+ dev_err(&pdev->dev, "no DT nor platform data ?!\n");
return -EINVAL;
}
- priv->burst = data->burst;
-
- priv->clk = devm_clk_get(&pdev->dev, NULL);
+ priv->clk = devm_clk_get(&pdev->dev, np ? "internal" : NULL);
if (IS_ERR(priv->clk)) {
dev_err(&pdev->dev, "no clock\n");
return PTR_ERR(priv->clk);
@@ -507,7 +512,7 @@ static int kirkwood_i2s_dev_probe(struct platform_device *pdev)
priv->ctl_rec = KIRKWOOD_RECCTL_SIZE_24;
/* Select the burst size */
- if (data->burst == 32) {
+ if (priv->burst == 32) {
priv->ctl_play |= KIRKWOOD_PLAYCTL_BURST_32;
priv->ctl_rec |= KIRKWOOD_RECCTL_BURST_32;
} else {
@@ -552,12 +557,21 @@ static int kirkwood_i2s_dev_remove(struct platform_device *pdev)
return 0;
}
+#ifdef CONFIG_OF
+static struct of_device_id mvebu_audio_of_match[] = {
+ { .compatible = "marvell,mvebu-audio" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, mvebu_audio_of_match);
+#endif
+
static struct platform_driver kirkwood_i2s_driver = {
.probe = kirkwood_i2s_dev_probe,
.remove = kirkwood_i2s_dev_remove,
.driver = {
.name = DRV_NAME,
.owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(mvebu_audio_of_match),
},
};