cs53l23a: 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/cs53l32a.c |   94 ++---------------------------------
 1 file changed, 8 insertions(+), 86 deletions(-)

1 files changed, 8 insertions, 86 deletions

diff --git a/linux/drivers/media/video/cs53l32a.c b/linux/drivers/media/video/cs53l32a.c
index f0240e079..0c7789b1c 100644
--- a/linux/drivers/media/video/cs53l32a.c
+++ b/linux/drivers/media/video/cs53l32a.c
@@ -29,6 +29,7 @@
 #include <linux/videodev.h>
 #include <media/v4l2-common.h>
 #include <media/v4l2-chip-ident.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>
@@ -69,8 +70,7 @@ static int cs53l32a_read(struct i2c_client *client, u8 reg)
 	return i2c_smbus_read_byte_data(client, reg);
 }
 
-static int cs53l32a_command(struct i2c_client *client, unsigned int cmd,
-			    void *arg)
+static int cs53l32a_command(struct i2c_client *client, unsigned int cmd, void *arg)
 {
 	struct v4l2_routing *route = arg;
 	struct v4l2_control *ctrl = arg;
@@ -146,35 +146,17 @@ static int cs53l32a_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 cs53l32a_attach(struct i2c_adapter *adapter, int address, int kind)
-#else
-static int cs53l32a_attach(struct i2c_adapter *adapter, int address,
-			   unsigned short flags, int kind)
-#endif
+static int cs53l32a_probe(struct i2c_client *client)
 {
-	struct i2c_client *client;
 	int i;
 
 	/* 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, "cs53l32a");
 
-	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);
 
 	for (i = 1; i <= 7; i++) {
 		u8 v = cs53l32a_read(client, i);
@@ -199,76 +181,16 @@ static int cs53l32a_attach(struct i2c_adapter *adapter, int address,
 
 		v4l_dbg(1, debug, client, "Read Reg %d %02x\n", i, v);
 	}
-
-	i2c_attach_client(client);
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
-	MOD_INC_USE_COUNT;
-#endif
-	return 0;
-}
-
-static int cs53l32a_probe(struct i2c_adapter *adapter)
-{
-#ifdef I2C_CLASS_TV_ANALOG
-	if (adapter->class & I2C_CLASS_TV_ANALOG)
-#else
-	if (adapter->id == I2C_HW_B_BT848)
-#endif
-		return i2c_probe(adapter, &addr_data, cs53l32a_attach);
-	return 0;
-}
-
-static int cs53l32a_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
 	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)
+static struct v4l2_i2c_driver_data v4l2_i2c_data = {
 	.name = "cs53l32a",
-	.flags = I2C_DF_NOTIFY,
-#else
-	.driver = {
-		.name = "cs53l32a",
-	},
-#endif
-	.id = I2C_DRIVERID_CS53L32A,
-	.attach_adapter = cs53l32a_probe,
-	.detach_client = cs53l32a_detach,
+	.driverid = I2C_DRIVERID_CS53L32A,
 	.command = cs53l32a_command,
+	.probe = cs53l32a_probe,
 };
 
 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
 EXPORT_NO_SYMBOLS;
 #endif
-
-static int __init cs53l32a_init_module(void)
-{
-	return i2c_add_driver(&i2c_driver);
-}
-
-static void __exit cs53l32a_cleanup_module(void)
-{
-	i2c_del_driver(&i2c_driver);
-}
-
-module_init(cs53l32a_init_module);
-module_exit(cs53l32a_cleanup_module);