Hi!
On 11/03/15 19:35, ext Grygorii.Strashko@xxxxxxxxxx wrote:
>> + if (i2c_davinci_wait_status_change(dev, DAVINCI_I2C_STR_BB, 0)) {
>> + dev_warn(dev->dev, "timeout waiting for bus ready\n");
>> + davinci_i2c_recover_bus(dev);
>> + i2c_davinci_init(dev);
>> + /*
>> + * the bus should not be busy after init, otherwise something
>> + * is badly broken
>> + */
>
> I think you should recheck BB and return error if it's still detected.
But after re-reading the datasheet, I must conclude, this is almost not possible.
It will be a dead code. Reset will clear BB anyway and the only possibility to see
BB set to 1 here is when another master transmits right after our reset. We cannot
guarantee that we will always catch this here, so this must be any way handled over
AL interrupt.
--
Best regards,
Alexander Sverdlin.
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