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Commit e0cd2dd5 authored by Michael Hennerich's avatar Michael Hennerich Committed by Ben Dooks
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i2c: Blackfin TWI: implement I2C_FUNC_SMBUS_I2C_BLOCK functionality 



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

Signed-off-by: default avatarMichael Hennerich <michael.hennerich@analog.com>
Signed-off-by: default avatarMike Frysinger <vapier@gentoo.org>
[ben-linux@fluff.org: shortened subject]
Signed-off-by: default avatarBen Dooks <ben-linux@fluff.org>
parent 94327d00

drivers/i2c/busses/i2c-bfin-twi.c

+11 −1
Original line number Diff line number Diff line
@@ -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 = {