diff options
Diffstat (limited to 'src/drivers/i2c')
| -rw-r--r-- | src/drivers/i2c/designware/dw_i2c.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/src/drivers/i2c/designware/dw_i2c.c b/src/drivers/i2c/designware/dw_i2c.c index 3181e7a0cf..c0212c3e27 100644 --- a/src/drivers/i2c/designware/dw_i2c.c +++ b/src/drivers/i2c/designware/dw_i2c.c @@ -419,6 +419,15 @@ static int _dw_i2c_transfer(unsigned int bus, const struct i2c_msg *segments, /* Read to clear INTR_STAT_STOP_DET */ read32(®s->clear_stop_det_intr); + /* Check TX abort */ + if (read32(®s->raw_intr_stat) & INTR_STAT_TX_ABORT) { + printk(BIOS_ERR, "I2C TX abort detected (%08x)\n", + read32(®s->tx_abort_source)); + /* clear INTR_STAT_TX_ABORT */ + read32(®s->clear_tx_abrt_intr); + goto out; + } + /* Wait for the bus to go idle */ if (dw_i2c_wait_for_bus_idle(regs)) { printk(BIOS_ERR, "I2C timeout waiting for bus %u idle\n", bus); @@ -747,8 +756,8 @@ int dw_i2c_init(unsigned int bus, const struct dw_i2c_bus_config *bcfg) write32(®s->rx_thresh, 0); write32(®s->tx_thresh, 0); - /* Enable stop detection interrupt */ - write32(®s->intr_mask, INTR_STAT_STOP_DET); + /* Enable stop detection and TX abort interrupt */ + write32(®s->intr_mask, INTR_STAT_STOP_DET | INTR_STAT_TX_ABORT); printk(BIOS_INFO, "DW I2C bus %u at %p (%u KHz)\n", bus, regs, speed / KHz); |