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i2c: Blackfin TWI: implement I2C_FUNC_SMBUS_I2C_BLOCK functionality

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Some drivers need i2c_smbus_read_i2c_block_data() functionality, so add
support for it to the Blackfin I2C bus driver.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
[ben-linux@fluff.org: shortened subject]
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This commit is contained in:
Michael Hennerich 2009-05-27 09:24:10 +00:00 committed by Ben Dooks
parent 94327d009e
commit e0cd2dd5dd
1 changed files with 11 additions and 1 deletions
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12
drivers/i2c/busses/i2c-bfin-twi.c
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@ -449,6 +449,16 @@ int bfin_twi_smbus_xfer(struct i2c_adapter *adap, u16 addr,
}
iface->transPtr = data->block;
break;
case I2C_SMBUS_I2C_BLOCK_DATA:
if (read_write == I2C_SMBUS_READ) {
iface->readNum = data->block[0];
iface->cur_mode = TWI_I2C_MODE_COMBINED;
} else {
iface->writeNum = data->block[0];
iface->cur_mode = TWI_I2C_MODE_STANDARDSUB;
}
iface->transPtr = (u8 *)&data->block[1];
break;
default:
return -1;
}
@ -572,7 +582,7 @@ static u32 bfin_twi_functionality(struct i2c_adapter *adap)
return I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE |
I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA |
I2C_FUNC_SMBUS_BLOCK_DATA | I2C_FUNC_SMBUS_PROC_CALL |
I2C_FUNC_I2C;
I2C_FUNC_I2C | I2C_FUNC_SMBUS_I2C_BLOCK;
}
static struct i2c_algorithm bfin_twi_algorithm = {