diff options
Diffstat (limited to 'drivers/i2c/busses/i2c-octeon-core.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-octeon-core.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/i2c/busses/i2c-octeon-core.c b/drivers/i2c/busses/i2c-octeon-core.c index 76a5ec100d30..5b7b942141e7 100644 --- a/drivers/i2c/busses/i2c-octeon-core.c +++ b/drivers/i2c/busses/i2c-octeon-core.c @@ -182,6 +182,7 @@ static int octeon_i2c_hlc_wait(struct octeon_i2c *i2c) static int octeon_i2c_check_status(struct octeon_i2c *i2c, int final_read) { u8 stat; + u64 mode; /* * This is ugly... in HLC mode the status is not in the status register @@ -244,6 +245,13 @@ static int octeon_i2c_check_status(struct octeon_i2c *i2c, int final_read) case STAT_RXADDR_NAK: case STAT_AD2W_NAK: return -ENXIO; + + case STAT_WDOG_TOUT: + mode = __raw_readq(i2c->twsi_base + OCTEON_REG_MODE(i2c)); + /* Set BUS_MON_RST to reset bus monitor */ + mode |= BUS_MON_RST_MASK; + octeon_i2c_writeq_flush(mode, i2c->twsi_base + OCTEON_REG_MODE(i2c)); + return -EIO; default: dev_err(i2c->dev, "unhandled state: %d\n", stat); return -EIO; |