vserver 1.9.5.x5

[linux-2.6.git] / drivers / i2c / i2c-core.c

diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index 2583eca..42776f1 100644 (file)
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -177,12 +177,25 @@ out_unlock:
 int i2c_del_adapter(struct i2c_adapter *adap)
 {
        struct list_head  *item, *_n;
+       struct i2c_adapter *adap_from_list;
        struct i2c_driver *driver;
        struct i2c_client *client;
        int res = 0;
 
        down(&core_lists);
 
+       /* First make sure that this adapter was ever added */
+       list_for_each_entry(adap_from_list, &adapters, list) {
+               if (adap_from_list == adap)
+                       break;
+       }
+       if (adap_from_list != adap) {
+               pr_debug("I2C: Attempting to delete an unregistered "
+                        "adapter\n");
+               res = -EINVAL;
+               goto out_unlock;
+       }
+
        list_for_each(item,&drivers) {
                driver = list_entry(item, struct i2c_driver, list);
                if (driver->detach_adapter)
@@ -517,9 +530,29 @@ static int i2c_device_match(struct device *dev, struct device_driver *drv)
        return 1;
 }
 
+static int i2c_bus_suspend(struct device * dev, u32 state)
+{
+       int rc = 0;
+
+       if (dev->driver && dev->driver->suspend)
+               rc = dev->driver->suspend(dev,state,0);
+       return rc;
+}
+
+static int i2c_bus_resume(struct device * dev)
+{
+       int rc = 0;
+       
+       if (dev->driver && dev->driver->resume)
+               rc = dev->driver->resume(dev,0);
+       return rc;
+}
+
 struct bus_type i2c_bus_type = {
        .name =         "i2c",
        .match =        i2c_device_match,
+       .suspend =      i2c_bus_suspend,
+       .resume =       i2c_bus_resume,
 };
 
 static int __init i2c_init(void)
@@ -727,7 +760,7 @@ int i2c_probe(struct i2c_adapter *adapter,
                        if (addr == address_data->normal_i2c[i]) {
                                found = 1;
                                dev_dbg(&adapter->dev, "found normal i2c entry for adapter %d, "
-                                       "addr %02x", adap_id,addr);
+                                       "addr %02x\n", adap_id, addr);
                        }
                }
 
@@ -988,35 +1021,8 @@ s32 i2c_smbus_write_word_data(struct i2c_client *client, u8 command, u16 value)
                              I2C_SMBUS_WORD_DATA,&data);
 }
 
-s32 i2c_smbus_process_call(struct i2c_client *client, u8 command, u16 value)
-{
-       union i2c_smbus_data data;
-       data.word = value;
-       if (i2c_smbus_xfer(client->adapter,client->addr,client->flags,
-                          I2C_SMBUS_WRITE,command,
-                          I2C_SMBUS_PROC_CALL, &data))
-               return -1;
-       else
-               return 0x0FFFF & data.word;
-}
-
-/* Returns the number of read bytes */
-s32 i2c_smbus_read_block_data(struct i2c_client *client, u8 command, u8 *values)
-{
-       union i2c_smbus_data data;
-       int i;
-       if (i2c_smbus_xfer(client->adapter,client->addr,client->flags,
-                          I2C_SMBUS_READ,command,
-                          I2C_SMBUS_BLOCK_DATA,&data))
-               return -1;
-       else {
-               for (i = 1; i <= data.block[0]; i++)
-                       values[i-1] = data.block[i];
-               return data.block[0];
-       }
-}
-
-s32 i2c_smbus_write_block_data(struct i2c_client *client, u8 command, u8 length, u8 *values)
+s32 i2c_smbus_write_block_data(struct i2c_client *client, u8 command,
+                              u8 length, u8 *values)
 {
        union i2c_smbus_data data;
        int i;
@@ -1026,27 +1032,8 @@ s32 i2c_smbus_write_block_data(struct i2c_client *client, u8 command, u8 length,
                data.block[i] = values[i-1];
        data.block[0] = length;
        return i2c_smbus_xfer(client->adapter,client->addr,client->flags,
-                             I2C_SMBUS_WRITE,command,
-                             I2C_SMBUS_BLOCK_DATA,&data);
-}
-
-/* Returns the number of read bytes */
-s32 i2c_smbus_block_process_call(struct i2c_client *client, u8 command, u8 length, u8 *values)
-{
-       union i2c_smbus_data data;
-       int i;
-       if (length > I2C_SMBUS_BLOCK_MAX - 1)
-               return -1;
-       data.block[0] = length;
-       for (i = 1; i <= length; i++)
-               data.block[i] = values[i-1];
-       if(i2c_smbus_xfer(client->adapter,client->addr,client->flags,
-                         I2C_SMBUS_WRITE, command,
-                         I2C_SMBUS_BLOCK_PROC_CALL, &data))
-               return -1;
-       for (i = 1; i <= data.block[0]; i++)
-               values[i-1] = data.block[i];
-       return data.block[0];
+                             I2C_SMBUS_WRITE,command,
+                             I2C_SMBUS_BLOCK_DATA,&data);
 }
 
 /* Returns the number of read bytes */
@@ -1065,20 +1052,6 @@ s32 i2c_smbus_read_i2c_block_data(struct i2c_client *client, u8 command, u8 *val
        }
 }
 
-s32 i2c_smbus_write_i2c_block_data(struct i2c_client *client, u8 command, u8 length, u8 *values)
-{
-       union i2c_smbus_data data;
-       int i;
-       if (length > I2C_SMBUS_I2C_BLOCK_MAX)
-               length = I2C_SMBUS_I2C_BLOCK_MAX;
-       for (i = 1; i <= length; i++)
-               data.block[i] = values[i-1];
-       data.block[0] = length;
-       return i2c_smbus_xfer(client->adapter,client->addr,client->flags,
-                             I2C_SMBUS_WRITE,command,
-                             I2C_SMBUS_I2C_BLOCK_DATA,&data);
-}
-
 /* Simulate a SMBus command using the i2c protocol 
    No checking of parameters is done!  */
 static s32 i2c_smbus_xfer_emulated(struct i2c_adapter * adapter, u16 addr, 
@@ -1302,11 +1275,8 @@ EXPORT_SYMBOL(i2c_smbus_read_byte_data);
 EXPORT_SYMBOL(i2c_smbus_write_byte_data);
 EXPORT_SYMBOL(i2c_smbus_read_word_data);
 EXPORT_SYMBOL(i2c_smbus_write_word_data);
-EXPORT_SYMBOL(i2c_smbus_process_call);
-EXPORT_SYMBOL(i2c_smbus_read_block_data);
 EXPORT_SYMBOL(i2c_smbus_write_block_data);
 EXPORT_SYMBOL(i2c_smbus_read_i2c_block_data);
-EXPORT_SYMBOL(i2c_smbus_write_i2c_block_data);
 
 EXPORT_SYMBOL(i2c_get_functionality);
 EXPORT_SYMBOL(i2c_check_functionality);