ASoC: Add I/O control bus information to factored out cache setup

While writes tend to be able to use a fairly bus independant format to
do the writes reads are all bus specific. To allow us to factor out
this code include the bus type as a parameter when setting up the
cache.

Initially just use this to factor out hw_write_t for I2C.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

10 files changed, 63 insertions, 39 deletions

diff --git a/include/sound/soc.h b/include/sound/soc.h
index 27409dd41ae9..d0b29a509bdd 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -187,13 +187,20 @@ typedef int (*hw_read_t)(void *,char* ,int);
 
 extern struct snd_ac97_bus_ops soc_ac97_ops;
 
+enum snd_soc_control_type {
+        SND_SOC_CUSTOM,
+        SND_SOC_I2C,
+        SND_SOC_SPI,
+};
+
 int snd_soc_register_platform(struct snd_soc_platform *platform);
 void snd_soc_unregister_platform(struct snd_soc_platform *platform);
 int snd_soc_register_codec(struct snd_soc_codec *codec);
 void snd_soc_unregister_codec(struct snd_soc_codec *codec);
 int snd_soc_codec_volatile_register(struct snd_soc_codec *codec, int reg);
 int snd_soc_codec_set_cache_io(struct snd_soc_codec *codec,
-                               int addr_bits, int data_bits);
+                               int addr_bits, int data_bits,
+                               enum snd_soc_control_type control);
 
 #ifdef CONFIG_PM
 int snd_soc_suspend_device(struct device *dev);
diff --git a/sound/soc/codecs/wm8510.c b/sound/soc/codecs/wm8510.c
index 7a169bff86f9..4ca724ff4c6e 100644
--- a/sound/soc/codecs/wm8510.c
+++ b/sound/soc/codecs/wm8510.c
@@ -564,7 +564,8 @@ static int wm8510_resume(struct platform_device *pdev)
  * initialise the WM8510 driver
  * register the mixer and dsp interfaces with the kernel
  */
-static int wm8510_init(struct snd_soc_device *socdev)
+static int wm8510_init(struct snd_soc_device *socdev,
+                       enum snd_soc_control_type control)
 {
         struct snd_soc_codec *codec = socdev->card->codec;
         int ret = 0;
@@ -580,7 +581,7 @@ static int wm8510_init(struct snd_soc_device *socdev)
         if (codec->reg_cache == NULL)
                 return -ENOMEM;
 
-        ret = snd_soc_codec_set_cache_io(codec, 7, 9);
+        ret = snd_soc_codec_set_cache_io(codec, 7, 9, control);
         if (ret < 0) {
                 printk(KERN_ERR "wm8510: failed to set cache I/O: %d\n",
                        ret);
@@ -635,7 +636,7 @@ static int wm8510_i2c_probe(struct i2c_client *i2c,
         i2c_set_clientdata(i2c, codec);
         codec->control_data = i2c;
 
-        ret = wm8510_init(socdev);
+        ret = wm8510_init(socdev, SND_SOC_I2C);
         if (ret < 0)
                 pr_err("failed to initialise WM8510\n");
 
@@ -715,7 +716,7 @@ static int __devinit wm8510_spi_probe(struct spi_device *spi)
 
         codec->control_data = spi;
 
-        ret = wm8510_init(socdev);
+        ret = wm8510_init(socdev, SND_SOC_SPI);
         if (ret < 0)
                 dev_err(&spi->dev, "failed to initialise WM8510\n");
 
@@ -784,7 +785,6 @@ static int wm8510_probe(struct platform_device *pdev)
         wm8510_socdev = socdev;
 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
         if (setup->i2c_address) {
-                codec->hw_write = (hw_write_t)i2c_master_send;
                 ret = wm8510_add_i2c_device(pdev, setup);
         }
 #endif
diff --git a/sound/soc/codecs/wm8580.c b/sound/soc/codecs/wm8580.c
index 2250adea749f..d5473473a1e3 100644
--- a/sound/soc/codecs/wm8580.c
+++ b/sound/soc/codecs/wm8580.c
@@ -832,7 +832,8 @@ struct snd_soc_codec_device soc_codec_dev_wm8580 = {
 };
 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8580);
 
-static int wm8580_register(struct wm8580_priv *wm8580)
+static int wm8580_register(struct wm8580_priv *wm8580,
+                           enum snd_soc_control_type control)
 {
         int ret, i;
         struct snd_soc_codec *codec = &wm8580->codec;
@@ -859,7 +860,7 @@ static int wm8580_register(struct wm8580_priv *wm8580)
 
         memcpy(codec->reg_cache, wm8580_reg, sizeof(wm8580_reg));
 
-        ret = snd_soc_codec_set_cache_io(codec, 7, 9);
+        ret = snd_soc_codec_set_cache_io(codec, 7, 9, control);
         if (ret < 0) {
                 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
                 goto err;
@@ -944,14 +945,13 @@ static int wm8580_i2c_probe(struct i2c_client *i2c,
                 return -ENOMEM;
 
         codec = &wm8580->codec;
-        codec->hw_write = (hw_write_t)i2c_master_send;
 
         i2c_set_clientdata(i2c, wm8580);
         codec->control_data = i2c;
 
         codec->dev = &i2c->dev;
 
-        return wm8580_register(wm8580);
+        return wm8580_register(wm8580, SND_SOC_I2C);
 }
 
 static int wm8580_i2c_remove(struct i2c_client *client)
diff --git a/sound/soc/codecs/wm8728.c b/sound/soc/codecs/wm8728.c
index 66da44b08d35..a28630de9c91 100644
--- a/sound/soc/codecs/wm8728.c
+++ b/sound/soc/codecs/wm8728.c
@@ -248,7 +248,8 @@ static int wm8728_resume(struct platform_device *pdev)
  * initialise the WM8728 driver
  * register the mixer and dsp interfaces with the kernel
  */
-static int wm8728_init(struct snd_soc_device *socdev)
+static int wm8728_init(struct snd_soc_device *socdev,
+                       enum snd_soc_control_type control)
 {
         struct snd_soc_codec *codec = socdev->card->codec;
         int ret = 0;
@@ -266,7 +267,7 @@ static int wm8728_init(struct snd_soc_device *socdev)
         if (codec->reg_cache == NULL)
                 return -ENOMEM;
 
-        ret = snd_soc_codec_set_cache_io(codec, 7, 9);
+        ret = snd_soc_codec_set_cache_io(codec, 7, 9, control);
         if (ret < 0) {
                 printk(KERN_ERR "wm8728: failed to configure cache I/O: %d\n",
                        ret);
@@ -323,7 +324,7 @@ static int wm8728_i2c_probe(struct i2c_client *i2c,
         i2c_set_clientdata(i2c, codec);
         codec->control_data = i2c;
 
-        ret = wm8728_init(socdev);
+        ret = wm8728_init(socdev, SND_SOC_I2C);
         if (ret < 0)
                 pr_err("failed to initialise WM8728\n");
 
@@ -403,7 +404,7 @@ static int __devinit wm8728_spi_probe(struct spi_device *spi)
 
         codec->control_data = spi;
 
-        ret = wm8728_init(socdev);
+        ret = wm8728_init(socdev, SND_SOC_SPI);
         if (ret < 0)
                 dev_err(&spi->dev, "failed to initialise WM8728\n");
 
@@ -472,7 +473,6 @@ static int wm8728_probe(struct platform_device *pdev)
 
 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
         if (setup->i2c_address) {
-                codec->hw_write = (hw_write_t)i2c_master_send;
                 ret = wm8728_add_i2c_device(pdev, setup);
         }
 #endif
diff --git a/sound/soc/codecs/wm8731.c b/sound/soc/codecs/wm8731.c
index 4eb84ff691b3..27fc942a5ced 100644
--- a/sound/soc/codecs/wm8731.c
+++ b/sound/soc/codecs/wm8731.c
@@ -504,7 +504,8 @@ struct snd_soc_codec_device soc_codec_dev_wm8731 = {
 };
 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8731);
 
-static int wm8731_register(struct wm8731_priv *wm8731)
+static int wm8731_register(struct wm8731_priv *wm8731,
+                           enum snd_soc_control_type control)
 {
         int ret;
         struct snd_soc_codec *codec = &wm8731->codec;
@@ -531,7 +532,7 @@ static int wm8731_register(struct wm8731_priv *wm8731)
 
         memcpy(codec->reg_cache, wm8731_reg, sizeof(wm8731_reg));
 
-        ret = snd_soc_codec_set_cache_io(codec, 7, 9);
+        ret = snd_soc_codec_set_cache_io(codec, 7, 9, control);
         if (ret < 0) {
                 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
                 goto err;
@@ -630,7 +631,7 @@ static int __devinit wm8731_spi_probe(struct spi_device *spi)
 
         dev_set_drvdata(&spi->dev, wm8731);
 
-        return wm8731_register(wm8731);
+        return wm8731_register(wm8731, SND_SOC_SPI);
 }
 
 static int __devexit wm8731_spi_remove(struct spi_device *spi)
@@ -682,14 +683,13 @@ static __devinit int wm8731_i2c_probe(struct i2c_client *i2c,
                 return -ENOMEM;
 
         codec = &wm8731->codec;
-        codec->hw_write = (hw_write_t)i2c_master_send;
 
         i2c_set_clientdata(i2c, wm8731);
         codec->control_data = i2c;
 
         codec->dev = &i2c->dev;
 
-        return wm8731_register(wm8731);
+        return wm8731_register(wm8731, SND_SOC_I2C);
 }
 
 static __devexit int wm8731_i2c_remove(struct i2c_client *client)
diff --git a/sound/soc/codecs/wm8750.c b/sound/soc/codecs/wm8750.c
index ed09043181e1..e6422b161678 100644
--- a/sound/soc/codecs/wm8750.c
+++ b/sound/soc/codecs/wm8750.c
@@ -711,7 +711,8 @@ static int wm8750_resume(struct platform_device *pdev)
  * initialise the WM8750 driver
  * register the mixer and dsp interfaces with the kernel
  */
-static int wm8750_init(struct snd_soc_device *socdev)
+static int wm8750_init(struct snd_soc_device *socdev,
+                       enum snd_soc_control_type control)
 {
         struct snd_soc_codec *codec = socdev->card->codec;
         int reg, ret = 0;
@@ -726,7 +727,7 @@ static int wm8750_init(struct snd_soc_device *socdev)
         if (codec->reg_cache == NULL)
                 return -ENOMEM;
 
-        ret = snd_soc_codec_set_cache_io(codec, 7, 9);
+        ret = snd_soc_codec_set_cache_io(codec, 7, 9, control);
         if (ret < 0) {
                 printk(KERN_ERR "wm8750: failed to set cache I/O: %d\n", ret);
                 goto err;
@@ -809,7 +810,7 @@ static int wm8750_i2c_probe(struct i2c_client *i2c,
         i2c_set_clientdata(i2c, codec);
         codec->control_data = i2c;
 
-        ret = wm8750_init(socdev);
+        ret = wm8750_init(socdev, SND_SOC_I2C);
         if (ret < 0)
                 pr_err("failed to initialise WM8750\n");
 
@@ -889,7 +890,7 @@ static int __devinit wm8750_spi_probe(struct spi_device *spi)
 
         codec->control_data = spi;
 
-        ret = wm8750_init(socdev);
+        ret = wm8750_init(socdev, SND_SOC_SPI);
         if (ret < 0)
                 dev_err(&spi->dev, "failed to initialise WM8750\n");
 
@@ -967,7 +968,6 @@ static int wm8750_probe(struct platform_device *pdev)
 
 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
         if (setup->i2c_address) {
-                codec->hw_write = (hw_write_t)i2c_master_send;
                 ret = wm8750_add_i2c_device(pdev, setup);
         }
 #endif
diff --git a/sound/soc/codecs/wm8960.c b/sound/soc/codecs/wm8960.c
index c529ffcfe5d8..f59703be61c8 100644
--- a/sound/soc/codecs/wm8960.c
+++ b/sound/soc/codecs/wm8960.c
@@ -747,7 +747,8 @@ struct snd_soc_codec_device soc_codec_dev_wm8960 = {
 };
 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8960);
 
-static int wm8960_register(struct wm8960_priv *wm8960)
+static int wm8960_register(struct wm8960_priv *wm8960,
+                           enum snd_soc_control_type control)
 {
         struct wm8960_data *pdata = wm8960->codec.dev->platform_data;
         struct snd_soc_codec *codec = &wm8960->codec;
@@ -785,7 +786,7 @@ static int wm8960_register(struct wm8960_priv *wm8960)
 
         memcpy(codec->reg_cache, wm8960_reg, sizeof(wm8960_reg));
 
-        ret = snd_soc_codec_set_cache_io(codec, 7, 9);
+        ret = snd_soc_codec_set_cache_io(codec, 7, 9, control);
         if (ret < 0) {
                 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
                 goto err;
@@ -866,14 +867,13 @@ static __devinit int wm8960_i2c_probe(struct i2c_client *i2c,
                 return -ENOMEM;
 
         codec = &wm8960->codec;
-        codec->hw_write = (hw_write_t)i2c_master_send;
 
         i2c_set_clientdata(i2c, wm8960);
         codec->control_data = i2c;
 
         codec->dev = &i2c->dev;
 
-        return wm8960_register(wm8960);
+        return wm8960_register(wm8960, SND_SOC_I2C);
 }
 
 static __devexit int wm8960_i2c_remove(struct i2c_client *client)
diff --git a/sound/soc/codecs/wm8971.c b/sound/soc/codecs/wm8971.c
index 53f3bc90ea0c..d66efb0546ea 100644
--- a/sound/soc/codecs/wm8971.c
+++ b/sound/soc/codecs/wm8971.c
@@ -640,7 +640,8 @@ static int wm8971_resume(struct platform_device *pdev)
         return 0;
 }
 
-static int wm8971_init(struct snd_soc_device *socdev)
+static int wm8971_init(struct snd_soc_device *socdev,
+                       enum snd_soc_control_type control)
 {
         struct snd_soc_codec *codec = socdev->card->codec;
         int reg, ret = 0;
@@ -656,7 +657,7 @@ static int wm8971_init(struct snd_soc_device *socdev)
         if (codec->reg_cache == NULL)
                 return -ENOMEM;
 
-        ret = snd_soc_codec_set_cache_io(codec, 7, 9);
+        ret = snd_soc_codec_set_cache_io(codec, 7, 9, control);
         if (ret < 0) {
                 printk(KERN_ERR "wm8971: failed to set cache I/O: %d\n", ret);
                 goto err;
@@ -734,7 +735,7 @@ static int wm8971_i2c_probe(struct i2c_client *i2c,
 
         codec->control_data = i2c;
 
-        ret = wm8971_init(socdev);
+        ret = wm8971_init(socdev, SND_SOC_I2C);
         if (ret < 0)
                 pr_err("failed to initialise WM8971\n");
 
@@ -844,7 +845,6 @@ static int wm8971_probe(struct platform_device *pdev)
 
 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
         if (setup->i2c_address) {
-                codec->hw_write = (hw_write_t)i2c_master_send;
                 ret = wm8971_add_i2c_device(pdev, setup);
         }
 #endif
diff --git a/sound/soc/codecs/wm8988.c b/sound/soc/codecs/wm8988.c
index 7d5b807bdb48..7486d3ec787e 100644
--- a/sound/soc/codecs/wm8988.c
+++ b/sound/soc/codecs/wm8988.c
@@ -825,7 +825,8 @@ struct snd_soc_codec_device soc_codec_dev_wm8988 = {
 };
 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8988);
 
-static int wm8988_register(struct wm8988_priv *wm8988)
+static int wm8988_register(struct wm8988_priv *wm8988,
+                           enum snd_soc_control_type control)
 {
         struct snd_soc_codec *codec = &wm8988->codec;
         int ret;
@@ -854,7 +855,7 @@ static int wm8988_register(struct wm8988_priv *wm8988)
         memcpy(codec->reg_cache, wm8988_reg,
                sizeof(wm8988_reg));
 
-        ret = snd_soc_codec_set_cache_io(codec, 7, 9);
+        ret = snd_soc_codec_set_cache_io(codec, 7, 9, control);
         if (ret < 0) {
                 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
                 goto err;
@@ -927,14 +928,13 @@ static int wm8988_i2c_probe(struct i2c_client *i2c,
                 return -ENOMEM;
 
         codec = &wm8988->codec;
-        codec->hw_write = (hw_write_t)i2c_master_send;
 
         i2c_set_clientdata(i2c, wm8988);
         codec->control_data = i2c;
 
         codec->dev = &i2c->dev;
 
-        return wm8988_register(wm8988);
+        return wm8988_register(wm8988, SND_SOC_I2C);
 }
 
 static int wm8988_i2c_remove(struct i2c_client *client)
@@ -1019,7 +1019,7 @@ static int __devinit wm8988_spi_probe(struct spi_device *spi)
 
         spi->dev.driver_data = wm8988;
 
-        return wm8988_register(wm8988);
+        return wm8988_register(wm8988, SND_SOC_SPI);
 }
 
 static int __devexit wm8988_spi_remove(struct spi_device *spi)
diff --git a/sound/soc/soc-cache.c b/sound/soc/soc-cache.c
index 4eb4333a0efb..8b126682c843 100644
--- a/sound/soc/soc-cache.c
+++ b/sound/soc/soc-cache.c
@@ -11,6 +11,7 @@
  *  option) any later version.
  */
 
+#include <linux/i2c.h>
 #include <sound/soc.h>
 
 static unsigned int snd_soc_7_9_read(struct snd_soc_codec *codec,
@@ -62,6 +63,7 @@ static struct {
  * @type: Type of cache.
  * @addr_bits: Number of bits of register address data.
  * @data_bits: Number of bits of data per register.
+ * @control: Control bus used.
  *
  * Register formats are frequently shared between many I2C and SPI
  * devices.  In order to promote code reuse the ASoC core provides
@@ -75,7 +77,8 @@ static struct {
  * volatile registers.
  */
 int snd_soc_codec_set_cache_io(struct snd_soc_codec *codec,
-                               int addr_bits, int data_bits)
+                               int addr_bits, int data_bits,
+                               enum snd_soc_control_type control)
 {
         int i;
 
@@ -100,6 +103,20 @@ int snd_soc_codec_set_cache_io(struct snd_soc_codec *codec,
         codec->write = io_types[i].write;
         codec->read = io_types[i].read;
 
+        switch (control) {
+        case SND_SOC_CUSTOM:
+                break;
+
+        case SND_SOC_I2C:
+#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+                codec->hw_write = (hw_write_t)i2c_master_send;
+#endif
+                break;
+
+        case SND_SOC_SPI:
+                break;
+        }
+
         return 0;
 }
 EXPORT_SYMBOL_GPL(snd_soc_codec_set_cache_io);