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authorMark Brown <broonie@opensource.wolfsonmicro.com>2011-08-03 12:30:57 +0400
committerMark Brown <broonie@opensource.wolfsonmicro.com>2011-08-09 19:36:12 +0400
commit39e9b8d25d1c3a11e41e0044e010034a883f02ef (patch)
treebadbebb99d9071054cbae4f02b83fedaa0f0bbe1 /sound/soc/codecs/wm8741.c
parent398575db00c17a2068a7e0c1c36d340445bc7d65 (diff)
downloadlinux-39e9b8d25d1c3a11e41e0044e010034a883f02ef.tar.xz
ASoC: Add SPI support for WM8741
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@ti.com>
Diffstat (limited to 'sound/soc/codecs/wm8741.c')
-rw-r--r--sound/soc/codecs/wm8741.c48
1 files changed, 48 insertions, 0 deletions
diff --git a/sound/soc/codecs/wm8741.c b/sound/soc/codecs/wm8741.c
index 00f80f7655cb..9f6e952da8ec 100644
--- a/sound/soc/codecs/wm8741.c
+++ b/sound/soc/codecs/wm8741.c
@@ -17,6 +17,7 @@
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/i2c.h>
+#include <linux/spi/spi.h>
#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>
#include <linux/slab.h>
@@ -547,6 +548,43 @@ static struct i2c_driver wm8741_i2c_driver = {
};
#endif
+#if defined(CONFIG_SPI_MASTER)
+static int __devinit wm8741_spi_probe(struct spi_device *spi)
+{
+ struct wm8741_priv *wm8741;
+ int ret;
+
+ wm8741 = kzalloc(sizeof(struct wm8741_priv), GFP_KERNEL);
+ if (wm8741 == NULL)
+ return -ENOMEM;
+
+ wm8741->control_type = SND_SOC_SPI;
+ spi_set_drvdata(spi, wm8741);
+
+ ret = snd_soc_register_codec(&spi->dev,
+ &soc_codec_dev_wm8741, &wm8741_dai, 1);
+ if (ret < 0)
+ kfree(wm8741);
+ return ret;
+}
+
+static int __devexit wm8741_spi_remove(struct spi_device *spi)
+{
+ snd_soc_unregister_codec(&spi->dev);
+ kfree(spi_get_drvdata(spi));
+ return 0;
+}
+
+static struct spi_driver wm8741_spi_driver = {
+ .driver = {
+ .name = "wm8741",
+ .owner = THIS_MODULE,
+ },
+ .probe = wm8741_spi_probe,
+ .remove = __devexit_p(wm8741_spi_remove),
+};
+#endif /* CONFIG_SPI_MASTER */
+
static int __init wm8741_modinit(void)
{
int ret = 0;
@@ -556,6 +594,13 @@ static int __init wm8741_modinit(void)
if (ret != 0)
pr_err("Failed to register WM8741 I2C driver: %d\n", ret);
#endif
+#if defined(CONFIG_SPI_MASTER)
+ ret = spi_register_driver(&wm8741_spi_driver);
+ if (ret != 0) {
+ printk(KERN_ERR "Failed to register wm8741 SPI driver: %d\n",
+ ret);
+ }
+#endif
return ret;
}
@@ -563,6 +608,9 @@ module_init(wm8741_modinit);
static void __exit wm8741_exit(void)
{
+#if defined(CONFIG_SPI_MASTER)
+ spi_unregister_driver(&wm8741_spi_driver);
+#endif
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
i2c_del_driver(&wm8741_i2c_driver);
#endif