Il 24/10/25 03:05, Chun-Kuang Hu ha scritto:
Hi, Louis:
Louis-Alexis Eyraud <[email protected]> 於 2025年10月23日
週四 上午10:32寫道：
From: AngeloGioacchino Del Regno <[email protected]>
Add support for the newer HDMI-TX (Encoder) v2 and DDC v2 IPs
found in MediaTek's MT8195, MT8188 SoC and their variants, and
including support for display modes up to 4k60 and for HDMI
Audio, as per the HDMI 2.0 spec.
HDCP and CEC functionalities are also supported by this hardware,
but are not included in this commit and that also poses a slight
difference between the V2 and V1 controllers in how they handle
Hotplug Detection (HPD).
While the v1 controller was using the CEC controller to check
HDMI cable connection and disconnection, in this driver the v2
one does not.
This is due to the fact that on parts with v2 designs, like the
MT8195 SoC, there is one CEC controller shared between the HDMI
Transmitter (HDMI-TX) and Receiver (HDMI-RX): before eventually
adding support to use the CEC HW to wake up the HDMI controllers
it is necessary to have support for one TX, one RX *and* for both
at the same time.
Reviewed-by: CK Hu <[email protected]>
Signed-off-by: AngeloGioacchino Del Regno
<[email protected]>
Signed-off-by: Louis-Alexis Eyraud <[email protected]>
---
drivers/gpu/drm/mediatek/Kconfig | 7 +
drivers/gpu/drm/mediatek/Makefile | 2 +
drivers/gpu/drm/mediatek/mtk_hdmi_common.c | 4 +
drivers/gpu/drm/mediatek/mtk_hdmi_common.h | 9 +
drivers/gpu/drm/mediatek/mtk_hdmi_ddc_v2.c | 395 ++++++++
drivers/gpu/drm/mediatek/mtk_hdmi_regs_v2.h | 263 +++++
drivers/gpu/drm/mediatek/mtk_hdmi_v2.c | 1398 +++++++++++++++++++++++++++
7 files changed, 2078 insertions(+)
diff --git a/drivers/gpu/drm/mediatek/Kconfig b/drivers/gpu/drm/mediatek/Kconfig
index
994b48b82d447c47391122e6ff2d139edb223536..c89ae4ed2c96123684ecd357314fa2d2ba5a4433
100644
--- a/drivers/gpu/drm/mediatek/Kconfig
+++ b/drivers/gpu/drm/mediatek/Kconfig
@@ -45,3 +45,10 @@ config DRM_MEDIATEK_HDMI
select DRM_MEDIATEK_HDMI_COMMON
help
DRM/KMS HDMI driver for Mediatek SoCs
+
+config DRM_MEDIATEK_HDMI_V2
+ tristate "DRM HDMI v2 IP support for MediaTek SoCs"
+ depends on DRM_MEDIATEK
+ select DRM_MEDIATEK_HDMI_COMMON
+ help
+ DRM/KMS HDMI driver for MediaTek SoCs with HDMIv2 IP
The checkpatch show this warning. Maybe other old description just has
one line, I think it's better to have more information.
Please provide more information and I would modify this patch when I apply it.
WARNING: please write a help paragraph that fully describes the config
symbol with at least 4 lines
#54: FILE: drivers/gpu/drm/mediatek/Kconfig:49:
+config DRM_MEDIATEK_HDMI_V2
+ tristate "DRM HDMI v2 IP support for MediaTek SoCs"
+ depends on DRM_MEDIATEK
+ select DRM_MEDIATEK_HDMI_COMMON
+ help
+ DRM/KMS HDMI driver for MediaTek SoCs with HDMIv2 IP
Regards,
Chun-Kuang.
help
Say yes here to enable support for the HDMIv2 IP and related
DDCv2 as found in the MediaTek MT8195, MT8188 SoCs and other
variants.
This driver can also be built as a module. If so, the HDMIv2
module will be called "mtk_hdmi_v2", and the DDCv2 module
will be called "mtk_hdmi_ddc_v2".
Cheers,
Angelo
