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drivers: i2c: add error handling

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Return errors when failing at consecutive transactions and
missing targets.

Signed-off-by: Wei-Tai Lee <wtlee@andestech.com>
This commit is contained in:
Wei-Tai Lee 2023-06-08 10:40:10 +08:00 • committed by Carles Cufí
commit f2e0f787bf
1 changed files with 13 additions and 0 deletions
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13
drivers/i2c/i2c_andes_atciic100.c
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@ -185,6 +185,10 @@ static int i2c_atciic100_transfer(const struct device *dev,
ret = i2c_atciic100_controller_receive(dev,
addr, msgs[i].buf, msgs[i].len, msgs[i].flags);
}
if (ret < 0) {
goto exit;
}
}
exit:
@ -296,6 +300,11 @@ static int i2c_atciic100_controller_send(const struct device *dev,
sys_write32(reg, I2C_CMD(dev));
k_sem_take(&dev_data->device_sync_sem, K_FOREVER);
if (dev_data->status.target_ack != 1) {
return -EIO;
}
dev_data->status.target_ack = 0;
return 0;
}
@ -388,6 +397,10 @@ static int i2c_atciic100_controller_receive(const struct device *dev,
sys_write32(reg, I2C_CMD(dev));
k_sem_take(&dev_data->device_sync_sem, K_FOREVER);
if (dev_data->status.target_ack != 1) {
return -EIO;
}
dev_data->status.target_ack = 0;
return 0;
}