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Diffstat (limited to 'sound/soc/pxa/pxa2xx-i2s.c')
-rw-r--r--sound/soc/pxa/pxa2xx-i2s.c40
1 files changed, 39 insertions, 1 deletions
diff --git a/sound/soc/pxa/pxa2xx-i2s.c b/sound/soc/pxa/pxa2xx-i2s.c
index 8548818eea08..c796b1882776 100644
--- a/sound/soc/pxa/pxa2xx-i2s.c
+++ b/sound/soc/pxa/pxa2xx-i2s.c
@@ -16,6 +16,7 @@
#include <linux/device.h>
#include <linux/delay.h>
#include <linux/clk.h>
+#include <linux/platform_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/initval.h>
@@ -81,7 +82,6 @@ static int pxa2xx_i2s_startup(struct snd_pcm_substream *substream)
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
- clk_i2s = clk_get(NULL, "I2SCLK");
if (IS_ERR(clk_i2s))
return PTR_ERR(clk_i2s);
@@ -152,6 +152,7 @@ static int pxa2xx_i2s_hw_params(struct snd_pcm_substream *substream,
pxa_gpio_mode(gpio_bus[pxa_i2s.master].tx);
pxa_gpio_mode(gpio_bus[pxa_i2s.master].frm);
pxa_gpio_mode(gpio_bus[pxa_i2s.master].clk);
+ BUG_ON(IS_ERR(clk_i2s));
clk_enable(clk_i2s);
pxa_i2s_wait();
@@ -317,6 +318,43 @@ struct snd_soc_dai pxa_i2s_dai = {
EXPORT_SYMBOL_GPL(pxa_i2s_dai);
+static int pxa2xx_i2s_probe(struct platform_device *dev)
+{
+ clk_i2s = clk_get(&dev->dev, "I2SCLK");
+ return IS_ERR(clk_i2s) ? PTR_ERR(clk_i2s) : 0;
+}
+
+static int __devexit pxa2xx_i2s_remove(struct platform_device *dev)
+{
+ clk_put(clk_i2s);
+ clk_i2s = ERR_PTR(-ENOENT);
+ return 0;
+}
+
+static struct platform_driver pxa2xx_i2s_driver = {
+ .probe = pxa2xx_i2s_probe,
+ .remove = __devexit_p(pxa2xx_i2s_remove),
+
+ .driver = {
+ .name = "pxa2xx-i2s",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init pxa2xx_i2s_init(void)
+{
+ clk_i2s = ERR_PTR(-ENOENT);
+ return platform_driver_register(&pxa2xx_i2s_driver);
+}
+
+static void __exit pxa2xx_i2s_exit(void)
+{
+ platform_driver_unregister(&pxa2xx_i2s_driver);
+}
+
+module_init(pxa2xx_i2s_init);
+module_exit(pxa2xx_i2s_exit);
+
/* Module information */
MODULE_AUTHOR("Liam Girdwood, liam.girdwood@wolfsonmicro.com, www.wolfsonmicro.com");
MODULE_DESCRIPTION("pxa2xx I2S SoC Interface");