On 02/05/18 10:24, Dariusz Marcinkiewicz wrote:
> Hello, pretty late here but I have a small comment.
>
>
>> From: Hans Verkuil
>
>> This adds support for the DisplayPort CEC-Tunneling-over-AUX
>> feature that is part of the DisplayPort 1.3 standard.
>
>
>> +int drm_dp_cec_configure_adapter(struct drm_dp_aux *aux, const char
> *name,
>> +struct device *parent, const struct edid
> *edid)
>> +{
>> + u32 cec_caps = CEC_CAP_DEFAULTS | CEC_CAP_NEEDS_HPD;
> It seems there is a slight issue here when kernel is compiled w/o
> CONFIG_MEDIA_CEC_RC, in such case
> https://github.com/torvalds/linux/blob/master/drivers/media/cec/cec-core.c#L255
> strips CEC_CAP_RC from the adapter's caps. As a result the below check
> always fails and a new adapter is created every time this is run.
Ah, good one. I missed that.
I've fixed it in my tree.
I still haven't had the time to finish this patch series :-(
It's high on my TODO list, but not high enough yet...
Regards,
Hans
>
>> + if (aux->cec_adap->capabilities == cec_caps &&
>> + aux->cec_adap->available_log_addrs == num_las) {
>> + cec_s_phys_addr_from_edid(aux->cec_adap, edid);
>> + return 0;
>> + }
>> + cec_unregister_adapter(aux->cec_adap);
>> + }
>> +
> ...
>
> Thank you and best regards.
>
