V4L/DVB (6452): wm8775: convert to bus-based I2C API

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

1 files changed, 15 insertions, 63 deletions

diff --git a/drivers/media/video/wm8775.c b/drivers/media/video/wm8775.c
index 9f7e894ef962..c31a0c34b08b 100644
--- a/drivers/media/video/wm8775.c
+++ b/drivers/media/video/wm8775.c
@@ -34,6 +34,7 @@
 #include <linux/videodev.h>
 #include <media/v4l2-common.h>
 #include <media/v4l2-chip-ident.h>
+#include <media/v4l2-i2c-drv-legacy.h>
 
 MODULE_DESCRIPTION("wm8775 driver");
 MODULE_AUTHOR("Ulf Eklund, Hans Verkuil");
@@ -44,6 +45,7 @@ static unsigned short normal_i2c[] = { 0x36 >> 1, I2C_CLIENT_END };
 
 I2C_CLIENT_INSMOD;
 
+
 /* ----------------------------------------------------------------------- */
 
 enum {
@@ -76,8 +78,7 @@ static int wm8775_write(struct i2c_client *client, int reg, u16 val)
         return -1;
 }
 
-static int wm8775_command(struct i2c_client *client, unsigned int cmd,
-                          void *arg)
+static int wm8775_command(struct i2c_client *client, unsigned int cmd, void *arg)
 {
         struct wm8775_state *state = i2c_get_clientdata(client);
         struct v4l2_routing *route = arg;
@@ -159,31 +160,18 @@ static int wm8775_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;
-
-static int wm8775_attach(struct i2c_adapter *adapter, int address, int kind)
+static int wm8775_probe(struct i2c_client *client)
 {
-        struct i2c_client *client;
         struct wm8775_state *state;
 
         /* Check if the adapter supports the needed features */
-        if (!i2c_check_functionality(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;
-        snprintf(client->name, sizeof(client->name) - 1, "wm8775");
+        if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+                return -EIO;
 
-        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 wm8775_state), GFP_KERNEL);
         if (state == NULL) {
-                kfree(client);
                 return -ENOMEM;
         }
         state->input = 2;
@@ -208,56 +196,20 @@ static int wm8775_attach(struct i2c_adapter *adapter, int address, int kind)
         wm8775_write(client, R20, 0x07a);       /* Transient window 4ms, lower PGA gain */
         /* limit -1dB */
         wm8775_write(client, R21, 0x102);       /* LRBOTH = 1, use input 2. */
-        i2c_attach_client(client);
-
         return 0;
 }
 
-static int wm8775_probe(struct i2c_adapter *adapter)
+static int wm8775_remove(struct i2c_client *client)
 {
-        if (adapter->class & I2C_CLASS_TV_ANALOG)
-                return i2c_probe(adapter, &addr_data, wm8775_attach);
-        return 0;
-}
-
-static int wm8775_detach(struct i2c_client *client)
-{
-        struct wm8775_state *state = i2c_get_clientdata(client);
-        int err;
-
-        err = i2c_detach_client(client);
-        if (err) {
-                return err;
-        }
-        kfree(state);
-        kfree(client);
-
+        kfree(i2c_get_clientdata(client));
         return 0;
 }
 
-/* ----------------------------------------------------------------------- */
-
-/* i2c implementation */
-static struct i2c_driver i2c_driver = {
-        .driver = {
-                .name = "wm8775",
-        },
-        .id             = I2C_DRIVERID_WM8775,
-        .attach_adapter = wm8775_probe,
-        .detach_client  = wm8775_detach,
-        .command        = wm8775_command,
+static struct v4l2_i2c_driver_data v4l2_i2c_data = {
+        .name = "wm8775",
+        .driverid = I2C_DRIVERID_WM8775,
+        .command = wm8775_command,
+        .probe = wm8775_probe,
+        .remove = wm8775_remove,
 };
 
-
-static int __init wm8775_init_module(void)
-{
-        return i2c_add_driver(&i2c_driver);
-}
-
-static void __exit wm8775_cleanup_module(void)
-{
-        i2c_del_driver(&i2c_driver);
-}
-
-module_init(wm8775_init_module);
-module_exit(wm8775_cleanup_module);