diff options
Diffstat (limited to 'drivers/i2c/soft_i2c.c')
| -rw-r--r-- | drivers/i2c/soft_i2c.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/i2c/soft_i2c.c b/drivers/i2c/soft_i2c.c index a27de5a..da6cec1 100644 --- a/drivers/i2c/soft_i2c.c +++ b/drivers/i2c/soft_i2c.c @@ -385,8 +385,18 @@ int i2c_read(uchar chip, uint addr, int alen, uchar *buffer, int len) } shift -= 8; } - send_stop(); /* reportedly some chips need a full stop */ + + /* Some I2C chips need a stop/start sequence here, + * other chips don't work with a full stop and need + * only a start. Default behaviour is to send the + * stop/start sequence. + */ +#ifdef CONFIG_SOFT_I2C_READ_REPEATED_START send_start(); +#else + send_stop(); + send_start(); +#endif } /* * Send the chip address again, this time for a read cycle. |