Il 09/12/24 10:09, CK Hu (胡俊光) ha scritto:
Hi, Angelo: On Thu, 2024-12-05 at 12:45 +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 HDMI TX v2 driver, and to allow a future modernization of the HDMI v1 one, perform changes that enable the usage of the HDMI Helpers provided by DRM. Check if the HDMI driver provides the function pointers to hdmi_{clear,write}_infoframe used by the HDMI Helper API and, if present, add DRM_BRIDGE_OP_HDMI to the drm_bridge ops, enabling the drm API to register the bridge as HDMI and to use the HDMI Helper functions. Moreover, as part of data exclusively used (in the context of HDMI bridges) by the helpers, assign the vendor "MediaTek" and product "On-Chip HDMI" strings to the drm_bridge struct. If the hdmi_{write,clear}_infoframe pointers are not assigned, vendor and product strings and HDMI helpers will not be used, hence this commit brings no functional changes to drivers that have not been refactored to use the new helpers. This also means that, in the current state, there is effectively no functional change to mtk_hdmi and its other components.OP_HDMI is for v2. vendor and product strings is for both v1 and v2. So separate this patch to two patches.
They're both for v2, because only v2 uses the HDMI helpers, while v1 does not. Cheers, Angelo
Regards, CKSigned-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx> --- drivers/gpu/drm/mediatek/mtk_hdmi_common.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi_common.c b/drivers/gpu/drm/mediatek/mtk_hdmi_common.c index 4f708b04f5e8..0f60842462b0 100644 --- a/drivers/gpu/drm/mediatek/mtk_hdmi_common.c +++ b/drivers/gpu/drm/mediatek/mtk_hdmi_common.c @@ -408,9 +408,16 @@ struct mtk_hdmi *mtk_hdmi_common_probe(struct platform_device *pdev) hdmi->bridge.funcs = ver_conf->bridge_funcs; hdmi->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID | DRM_BRIDGE_OP_HPD; + + if (ver_conf->bridge_funcs->hdmi_write_infoframe && + ver_conf->bridge_funcs->hdmi_clear_infoframe) + hdmi->bridge.ops |= DRM_BRIDGE_OP_HDMI; + hdmi->bridge.type = DRM_MODE_CONNECTOR_HDMIA; hdmi->bridge.of_node = pdev->dev.of_node; hdmi->bridge.ddc = hdmi->ddc_adpt; + hdmi->bridge.vendor = "MediaTek"; + hdmi->bridge.product = "On-Chip HDMI"; ret = devm_drm_bridge_add(dev, &hdmi->bridge); if (ret) -- 2.47.0
