linux-kernel - Re: [PATCH v6 37/42] drm/mediatek: mtk_hdmi_common: Assign DDC adapter pointer to bridge

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Message-ID: <1eff72da-c88f-46bc-aa0a-4e7615184202@collabora.com>
Date: Thu, 13 Feb 2025 11:38:07 +0100
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
To: CK Hu (胡俊光) <ck.hu@...iatek.com>,
 "chunkuang.hu@...nel.org" <chunkuang.hu@...nel.org>
Cc: "robh@...nel.org" <robh@...nel.org>,
 "jie.qiu@...iatek.com" <jie.qiu@...iatek.com>,
 "tzimmermann@...e.de" <tzimmermann@...e.de>,
 "simona@...ll.ch" <simona@...ll.ch>, "mripard@...nel.org"
 <mripard@...nel.org>, Jitao Shi (石记涛)
 <jitao.shi@...iatek.com>,
 "linux-mediatek@...ts.infradead.org" <linux-mediatek@...ts.infradead.org>,
 "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
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Subject: Re: [PATCH v6 37/42] drm/mediatek: mtk_hdmi_common: Assign DDC
 adapter pointer to bridge

Il 13/02/25 10:20, CK Hu (胡俊光) ha scritto:
> On Tue, 2025-02-11 at 12:34 +0100, AngeloGioacchino Del Regno wrote:
>> External email : Please do not click links or open attachments until you have verified the sender or the content.
>>
>>
>> In preparation for adding the new HDMI TX v2 IP driver, assign the
>> pointer to the DDC adapter to struct drm_bridge during probe.
> 
> I could not find where to use hdmi->bridge.ddc in the patch of adding hdmi v2.
> Could you describe more about where or which function would use this?
> 

I have already replied to this exact question a long time ago.

https://lore.kernel.org/all/b5a77637-64b0-4ed3-9619-e76d094505af@collabora.com/

Regards,
Angelo

> Regards,
> CK
> 
>>
>> This commit brings no functional changes.
>>
>> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
>> ---
>>   drivers/gpu/drm/mediatek/mtk_hdmi_common.c | 1 +
>>   1 file changed, 1 insertion(+)
>>
>> diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi_common.c b/drivers/gpu/drm/mediatek/mtk_hdmi_common.c
>> index 5ea45608921c..2c91f65f26fa 100644
>> --- a/drivers/gpu/drm/mediatek/mtk_hdmi_common.c
>> +++ b/drivers/gpu/drm/mediatek/mtk_hdmi_common.c
>> @@ -411,6 +411,7 @@ struct mtk_hdmi *mtk_hdmi_common_probe(struct platform_device *pdev)
>>          hdmi->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID
>>                           | DRM_BRIDGE_OP_HPD;
>>          hdmi->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
>> +       hdmi->bridge.ddc = hdmi->ddc_adpt;
>>          hdmi->bridge.vendor = "MediaTek";
>>          hdmi->bridge.product = "On-Chip HDMI";
>>
>> --
>> 2.48.1
>>
>