Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
/* ------------------------------------------------------------------------- */
-/* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi>.
+/* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi>.
All SMBus-related things are written by Frodo Looijaard <frodol@dds.nl>
SMBus 2.0 support by Mark Studebaker <mdsxyz123@yahoo.com> and
Jean Delvare <khali@linux-fr.org> */
{ },
};
-struct bus_type i2c_bus_type = {
+static struct bus_type i2c_bus_type = {
.name = "i2c",
.dev_attrs = i2c_dev_attrs,
.match = i2c_device_match,
.suspend = i2c_device_suspend,
.resume = i2c_device_resume,
};
-EXPORT_SYMBOL_GPL(i2c_bus_type);
/**
* i2c_new_device - instantiate an i2c device for use with a new style driver
/* I2C bus adapters -- one roots each I2C or SMBUS segment */
-void i2c_adapter_dev_release(struct device *dev)
+static void i2c_adapter_dev_release(struct device *dev)
{
struct i2c_adapter *adap = to_i2c_adapter(dev);
complete(&adap->dev_released);
{ },
};
-struct class i2c_adapter_class = {
+static struct class i2c_adapter_class = {
.owner = THIS_MODULE,
.name = "i2c-adapter",
.dev_attrs = i2c_adapter_attrs,
return 0;
}
-int i2c_check_addr(struct i2c_adapter *adapter, int addr)
+static int i2c_check_addr(struct i2c_adapter *adapter, int addr)
{
int rval;
return rval;
}
-EXPORT_SYMBOL(i2c_check_addr);
int i2c_attach_client(struct i2c_client *client)
{
}
EXPORT_SYMBOL(i2c_master_recv);
-int i2c_control(struct i2c_client *client,
- unsigned int cmd, unsigned long arg)
-{
- int ret = 0;
- struct i2c_adapter *adap = client->adapter;
-
- dev_dbg(&client->adapter->dev, "i2c ioctl, cmd: 0x%x, arg: %#lx\n", cmd, arg);
- switch (cmd) {
- case I2C_RETRIES:
- adap->retries = arg;
- break;
- case I2C_TIMEOUT:
- adap->timeout = arg;
- break;
- default:
- if (adap->algo->algo_control!=NULL)
- ret = adap->algo->algo_control(adap,cmd,arg);
- }
- return ret;
-}
-EXPORT_SYMBOL(i2c_control);
-
/* ----------------------------------------------------
* the i2c address scanning function
* Will not work for 10-bit addresses!
}
EXPORT_SYMBOL(i2c_smbus_write_word_data);
-/* Returns the number of read bytes */
+/**
+ * i2c_smbus_read_block_data - SMBus block read request
+ * @client: Handle to slave device
+ * @command: Command byte issued to let the slave know what data should
+ * be returned
+ * @values: Byte array into which data will be read; big enough to hold
+ * the data returned by the slave. SMBus allows at most 32 bytes.
+ *
+ * Returns the number of bytes read in the slave's response, else a
+ * negative number to indicate some kind of error.
+ *
+ * Note that using this function requires that the client's adapter support
+ * the I2C_FUNC_SMBUS_READ_BLOCK_DATA functionality. Not all adapter drivers
+ * support this; its emulation through I2C messaging relies on a specific
+ * mechanism (I2C_M_RECV_LEN) which may not be implemented.
+ */
s32 i2c_smbus_read_block_data(struct i2c_client *client, u8 command,
u8 *values)
{