tlv320aic23b: convert to bus-based I2C API.

From: Hans Verkuil <hverkuil@xs4all.nl>

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

---
 linux/drivers/media/video/tlv320aic23b.c |   93 ++++---------------------------
 1 file changed, 13 insertions(+), 80 deletions(-)

1 files changed, 13 insertions, 80 deletions

diff --git a/linux/drivers/media/video/tlv320aic23b.c b/linux/drivers/media/video/tlv320aic23b.c
index ee10fbeaa..2e5ed138e 100644
--- a/linux/drivers/media/video/tlv320aic23b.c
+++ b/linux/drivers/media/video/tlv320aic23b.c
@@ -31,6 +31,7 @@
 #include <linux/i2c-id.h>
 #include <linux/videodev.h>
 #include <media/v4l2-common.h>
+#include <media/v4l2-i2c-drv-legacy.h>
 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
 #include "i2c-compat.h"
 #include <linux/slab.h>
@@ -134,39 +135,18 @@ static int tlv320aic23b_command(struct i2c_client *client, unsigned int cmd,
  * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
  */
 
-static struct i2c_driver i2c_driver;
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
-static int tlv320aic23b_attach(struct i2c_adapter *adapter, int address, int kind)
-#else
-static int tlv320aic23b_attach(struct i2c_adapter *adapter, int address,
-			 unsigned short flags, int kind)
-#endif
+static int tlv320aic23b_probe(struct i2c_client *client)
 {
-	struct i2c_client *client;
 	struct tlv320aic23b_state *state;
 
 	/* Check if the adapter supports the needed features */
-	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
 		return 0;
 
-	client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
-	if (client == 0)
-		return -ENOMEM;
-
-	client->addr = address;
-	client->adapter = adapter;
-	client->driver = &i2c_driver;
-#if LINUX_VERSION_CODE <=  KERNEL_VERSION(2,6,15)
-	client->flags = I2C_CLIENT_ALLOW_USE;
-#endif
-	snprintf(client->name, sizeof(client->name) - 1, "tlv320aic23b");
-
-	v4l_info(client, "chip found @ 0x%x (%s)\n", address << 1, adapter->name);
+	v4l_info(client, "chip found @ 0x%x (%s)\n", client->addr << 1, client->adapter->name);
 
 	state = kmalloc(sizeof(struct tlv320aic23b_state), GFP_KERNEL);
 	if (state == NULL) {
-		kfree(client);
 		return -ENOMEM;
 	}
 	state->muted = 0;
@@ -179,72 +159,25 @@ static int tlv320aic23b_attach(struct i2c_adapter *adapter, int address,
 	tlv320aic23b_write(client, 0, 0x119);   /* set gain on both channels to +3.0 dB */
 	tlv320aic23b_write(client, 8, 0x000);   /* set sample rate to 48 kHz */
 	tlv320aic23b_write(client, 9, 0x001);   /* activate digital interface */
-
-	i2c_attach_client(client);
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
-	MOD_INC_USE_COUNT;
-#endif
 	return 0;
 }
 
-static int tlv320aic23b_probe(struct i2c_adapter *adapter)
+static int tlv320aic23b_remove(struct i2c_client *client)
 {
-	if (adapter->class & I2C_CLASS_TV_ANALOG)
-		return i2c_probe(adapter, &addr_data, tlv320aic23b_attach);
-	return 0;
-}
-
-static int tlv320aic23b_detach(struct i2c_client *client)
-{
-	int err;
-
-	err = i2c_detach_client(client);
-	if (err) {
-		return err;
-	}
-	kfree(client);
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
-	MOD_DEC_USE_COUNT;
-#endif
+	kfree(i2c_get_clientdata(client));
 	return 0;
 }
 
 /* ----------------------------------------------------------------------- */
 
-/* i2c implementation */
-static struct i2c_driver i2c_driver = {
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))&&(LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,15))
-	.owner = THIS_MODULE,
-#endif
-#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,15)
-	.name = "tlv320aic23b",
-	.flags = I2C_DF_NOTIFY,
-#else
-	.driver = {
-		.name = "tlv320aic23b",
-	},
-#endif
-	.id             = I2C_DRIVERID_TLV320AIC23B,
-	.attach_adapter = tlv320aic23b_probe,
-	.detach_client  = tlv320aic23b_detach,
-	.command        = tlv320aic23b_command,
-};
-
 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
 EXPORT_NO_SYMBOLS;
 #endif
 
-static int __init tlv320aic23b_init_module(void)
-{
-	return i2c_add_driver(&i2c_driver);
-}
-
-static void __exit tlv320aic23b_cleanup_module(void)
-{
-	i2c_del_driver(&i2c_driver);
-}
-
-module_init(tlv320aic23b_init_module);
-module_exit(tlv320aic23b_cleanup_module);
+static struct v4l2_i2c_driver_data v4l2_i2c_data = {
+	.name = "tlv320aic23b",
+	.driverid = I2C_DRIVERID_TLV320AIC23B,
+	.command = tlv320aic23b_command,
+	.probe = tlv320aic23b_probe,
+	.remove = tlv320aic23b_remove,
+};