int *input = arg;
 
                if (*input < 0 || *input > 3) {
-                       printk(KERN_ERR "wis-tw2804: channel %d is not "
-                                       "between 0 and 3!\n", *input);
+                       dev_err(&client->dev,
+                               "channel %d is not between 0 and 3!\n", *input);
                        return 0;
                }
                dec->channel = *input;
-               printk(KERN_DEBUG "wis-tw2804: initializing TW2804 "
-                               "channel %d\n", dec->channel);
+               dev_dbg(&client->dev, "initializing TW2804 channel %d\n",
+                       dec->channel);
                if (dec->channel == 0 &&
                                write_regs(client, global_registers, 0) < 0) {
-                       printk(KERN_ERR "wis-tw2804: error initializing "
-                                       "TW2804 global registers\n");
+                       dev_err(&client->dev,
+                               "error initializing TW2804 global registers\n");
                        return 0;
                }
                if (write_regs(client, channel_registers, dec->channel) < 0) {
-                       printk(KERN_ERR "wis-tw2804: error initializing "
-                                       "TW2804 channel %d\n", dec->channel);
+                       dev_err(&client->dev,
+                               "error initializing TW2804 channel %d\n",
+                               dec->channel);
                        return 0;
                }
                return 0;
        }
 
        if (dec->channel < 0) {
-               printk(KERN_DEBUG "wis-tw2804: ignoring command %08x until "
-                               "channel number is set\n", cmd);
+               dev_dbg(&client->dev,
+                       "ignoring command %08x until channel number is set\n",
+                       cmd);
                return 0;
        }
 
        dec->hue = 128;
        i2c_set_clientdata(client, dec);
 
-       printk(KERN_DEBUG "wis-tw2804: creating TW2804 at address %d on %s\n",
+       dev_dbg(&client->dev, "creating TW2804 at address %d on %s\n",
                client->addr, adapter->name);
 
        return 0;