Commit 39e9b8d2 authored by Mark Brown's avatar Mark Brown
Browse files

ASoC: Add SPI support for WM8741 



Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: default avatarLiam Girdwood <lrg@ti.com>
parent 398575db

sound/soc/codecs/wm8741.c

+48 −0
Original line number Diff line number Diff line
@@ -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