[PATCH v6 drm-dp 5/9] drm/hisilicon/hibmc: Getting connector info and EDID by using AUX channel

[Yongbang Shi]

> On Mon, 10 Mar 2025, Yongbang Shi <shiyongbang at huawei.com> wrote:
>> @@ -15,11 +15,17 @@
>>   
>>   static int hibmc_dp_connector_get_modes(struct drm_connector *connector)
>>   {
>> +	struct hibmc_dp *dp = to_hibmc_dp(connector);
>> +	const struct drm_edid *drm_edid;
>>   	int count;
>>   
>> -	count = drm_add_modes_noedid(connector, connector->dev->mode_config.max_width,
>> -				     connector->dev->mode_config.max_height);
>> -	drm_set_preferred_mode(connector, 1024, 768); // temporary implementation
>> +	drm_edid = drm_edid_read_ddc(connector, &dp->aux.ddc);
> drm_edid_read() should cover this if connector->ddc is set properly...

Thanks, I got it. I will change it to drm_edid_read() in next patch. I misunderstood what you meant before.


>> @@ -103,8 +125,8 @@ int hibmc_dp_init(struct hibmc_drm_private *priv)
>>   
>>   	drm_encoder_helper_add(encoder, &hibmc_dp_encoder_helper_funcs);
>>   
>> -	ret = drm_connector_init(dev, connector, &hibmc_dp_conn_funcs,
>> -				 DRM_MODE_CONNECTOR_DisplayPort);
>> +	ret = drm_connector_init_with_ddc(dev, connector, &hibmc_dp_conn_funcs,
>> +					  DRM_MODE_CONNECTOR_DisplayPort, &dp->aux.ddc);
> ...which you seem to do here.
>
> BR,
> Jani.
>
>