diff options
Diffstat (limited to 'drivers/i2c/mvtwsi.c')
| -rw-r--r-- | drivers/i2c/mvtwsi.c | 30 |
1 files changed, 21 insertions, 9 deletions
diff --git a/drivers/i2c/mvtwsi.c b/drivers/i2c/mvtwsi.c index 688efc2a23..3325c4bd46 100644 --- a/drivers/i2c/mvtwsi.c +++ b/drivers/i2c/mvtwsi.c @@ -423,7 +423,7 @@ static int __twsi_i2c_probe_chip(struct mvtwsi_registers *twsi, uchar chip) * will be a repeated start without a preceding stop. */ static int __twsi_i2c_read(struct mvtwsi_registers *twsi, uchar chip, - uint addr, int alen, uchar *data, int length) + u8 *addr, int alen, uchar *data, int length) { int status = 0; int stop_status; @@ -432,8 +432,7 @@ static int __twsi_i2c_read(struct mvtwsi_registers *twsi, uchar chip, status = i2c_begin(twsi, MVTWSI_STATUS_START, (chip << 1)); /* Send address bytes */ while ((status == 0) && alen--) - status = twsi_send(twsi, addr >> (8*alen), - MVTWSI_STATUS_DATA_W_ACK); + status = twsi_send(twsi, *(addr++), MVTWSI_STATUS_DATA_W_ACK); /* Begin i2c read to receive data bytes */ if (status == 0) status = i2c_begin(twsi, MVTWSI_STATUS_REPEATED_START, @@ -454,7 +453,7 @@ static int __twsi_i2c_read(struct mvtwsi_registers *twsi, uchar chip, * Begin write, send address byte(s), send data bytes, end. */ static int __twsi_i2c_write(struct mvtwsi_registers *twsi, uchar chip, - uint addr, int alen, uchar *data, int length) + u8 *addr, int alen, uchar *data, int length) { int status, stop_status; @@ -462,9 +461,8 @@ static int __twsi_i2c_write(struct mvtwsi_registers *twsi, uchar chip, * data bytes */ status = i2c_begin(twsi, MVTWSI_STATUS_START, (chip << 1)); /* Send address bytes */ - while ((status == 0) && alen--) - status = twsi_send(twsi, addr >> (8*alen), - MVTWSI_STATUS_DATA_W_ACK); + while ((status == 0) && (alen-- > 0)) + status = twsi_send(twsi, *(addr++), MVTWSI_STATUS_DATA_W_ACK); /* Send data bytes */ while ((status == 0) && (length-- > 0)) status = twsi_send(twsi, *(data++), MVTWSI_STATUS_DATA_W_ACK); @@ -498,14 +496,28 @@ static int twsi_i2c_read(struct i2c_adapter *adap, uchar chip, uint addr, int alen, uchar *data, int length) { struct mvtwsi_registers *twsi = twsi_get_base(adap); - return __twsi_i2c_read(twsi, chip, addr, alen, data, length); + u8 addr_bytes[4]; + + addr_bytes[0] = (addr >> 0) & 0xFF; + addr_bytes[1] = (addr >> 8) & 0xFF; + addr_bytes[2] = (addr >> 16) & 0xFF; + addr_bytes[3] = (addr >> 24) & 0xFF; + + return __twsi_i2c_read(twsi, chip, addr_bytes, alen, data, length); } static int twsi_i2c_write(struct i2c_adapter *adap, uchar chip, uint addr, int alen, uchar *data, int length) { struct mvtwsi_registers *twsi = twsi_get_base(adap); - return __twsi_i2c_write(twsi, chip, addr, alen, data, length); + u8 addr_bytes[4]; + + addr_bytes[0] = (addr >> 0) & 0xFF; + addr_bytes[1] = (addr >> 8) & 0xFF; + addr_bytes[2] = (addr >> 16) & 0xFF; + addr_bytes[3] = (addr >> 24) & 0xFF; + + return __twsi_i2c_write(twsi, chip, addr_bytes, alen, data, length); } #ifdef CONFIG_I2C_MVTWSI_BASE0 |