linux-toradex.git/drivers/gpu/drm/mediatek/Makefile, branch v6.19

drm/mediatek: Introduce HDMI/DDC v2 for MT8195/MT8188

2025-11-17T15:04:41+00:00

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 
Signed-off-by: AngeloGioacchino Del Regno 
Signed-off-by: Louis-Alexis Eyraud 
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20251023-mediatek-drm-hdmi-v2-v11-9-7873ec4a1edf@collabora.com/
Signed-off-by: Chun-Kuang Hu 

ddc_v2

ddc_v2

drm/mediatek: mtk_hdmi: Split driver and add common probe function

2025-11-17T15:04:37+00:00

In preparation for adding a new driver for the HDMI TX v2 IP,
split out the functions that will be common between the already
present mtk_hdmi (v1) driver and the new one.

Since the probe flow for both drivers is 90% similar, add a common
probe function that will be called from each driver's .probe()
callback, avoiding lots of code duplication.

Reviewed-by: CK Hu 
Signed-off-by: AngeloGioacchino Del Regno 
Signed-off-by: Louis-Alexis Eyraud 
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20251023-mediatek-drm-hdmi-v2-v11-4-7873ec4a1edf@collabora.com/
Signed-off-by: Chun-Kuang Hu

drm/mediatek: mtk_hdmi_ddc: Switch to register as module_platform_driver

2025-04-21T12:27:55+00:00

In preparation for adding a driver for the new HDMIv2 IP, and
before splitting out the common bits from the HDMI driver,
change the mtk_hdmi_ddc driver from being registered from the
HDMI driver itself to be a module_platform_driver of its own.

With this change, there are no more users of the mtk_hdmi.h header
so, while at it, also remove it.

Reviewed-by: Alexandre Mergnat 
Reviewed-by: CK Hu 
Signed-off-by: AngeloGioacchino Del Regno 
Link: https://patchwork.kernel.org/project/dri-devel/patch/20250415104321.51149-6-angelogioacchino.delregno@collabora.com/
Signed-off-by: Chun-Kuang Hu

drm/mediatek: mtk_cec: Switch to register as module_platform_driver

2025-04-17T23:26:14+00:00

In preparation for adding a driver for the new HDMIv2 IP, and
before splitting out the common bits from the HDMI driver, change
the mtk_cec driver from being registered from the mtk_hdmi driver
itself to be a module_platform_driver of its own.

Besides being a cleanup, this also allows build flexibility by
allowing to compile the CECv1 driver only when needed (for example,
this is not needed nor used in HDMIv2 configurations).

Reviewed-by: Alexandre Mergnat 
Reviewed-by: CK Hu 
Signed-off-by: AngeloGioacchino Del Regno 
Link: https://patchwork.kernel.org/project/dri-devel/patch/20250415104321.51149-5-angelogioacchino.delregno@collabora.com/
Signed-off-by: Chun-Kuang Hu

drm/mediatek: Rename files "mtk_drm_gem.c" to "mtk_gem.c"

2024-04-01T15:35:43+00:00

Rename files mtk_drm_gem.c to mtk_gem.c.

Reviewed-by: AngeloGioacchino Del Regno 
Reviewed-by: CK Hu 
Signed-off-by: Hsiao Chien Sung 
Link: https://patchwork.kernel.org/project/dri-devel/patch/20240322091232.26387-14-shawn.sung@mediatek.com/
Signed-off-by: Chun-Kuang Hu

drm/mediatek: Rename files "mtk_drm_plane.c" to "mtk_plane.c"

2024-04-01T15:32:11+00:00

Rename files mtk_drm_plane.c to mtk_plane.c and
modify the Makefile accordingly.

Reviewed-by: AngeloGioacchino Del Regno 
Reviewed-by: CK Hu 
Signed-off-by: Hsiao Chien Sung 
Link: https://patchwork.kernel.org/project/dri-devel/patch/20240322091232.26387-12-shawn.sung@mediatek.com/
Signed-off-by: Chun-Kuang Hu

drm/mediatek: Rename files "mtk_drm_ddp_comp.c" to "mtk_ddp_comp.c"

2024-04-01T15:28:38+00:00

Rename files mtk_drm_ddp_comp.c to mtk_ddp_comp.c and
modify the Makefile accordingly.

Reviewed-by: AngeloGioacchino Del Regno 
Reviewed-by: CK Hu 
Signed-off-by: Hsiao Chien Sung 
Link: https://patchwork.kernel.org/project/dri-devel/patch/20240322091232.26387-10-shawn.sung@mediatek.com/
Signed-off-by: Chun-Kuang Hu

drm/mediatek: Rename files "mtk_drm_crtc.c" to "mtk_crtc.c"

2024-04-01T15:24:47+00:00

Rename files mtk_drm_crtc.c to mtk_crtc.c and
modify the Makefile accordingly.

Reviewed-by: AngeloGioacchino Del Regno 
Reviewed-by: CK Hu 
Signed-off-by: Hsiao Chien Sung 
Link: https://patchwork.kernel.org/project/dri-devel/patch/20240322091232.26387-8-shawn.sung@mediatek.com/
Signed-off-by: Chun-Kuang Hu

drm/mediatek: Support MT8188 Padding in display driver

2023-12-14T14:45:36+00:00

Padding is a new display module on MT8188, it provides ability
to add pixels to width and height of a layer with specified colors.

Due to hardware design, Mixer in VDOSYS1 requires width of a layer
to be 2-pixel-align, or 4-pixel-align when ETHDR is enabled,
we need Padding to deal with odd width.

Reviewed-by: CK Hu 
Reviewed-by: AngeloGioacchino Del Regno 
Signed-off-by: Hsiao Chien Sung 
Link: https://patchwork.kernel.org/project/dri-devel/patch/20231214055847.4936-19-shawn.sung@mediatek.com/
Signed-off-by: Chun-Kuang Hu

drm/mediatek: Add ovl_adaptor support for MT8195

2023-03-22T16:25:16+00:00

Add ovl_adaptor driver for MT8195.
Ovl_adaptor is an encapsulated module and designed for simplified
DRM control flow. This module is composed of 8 RDMAs, 4 MERGEs and
an ETHDR. Two RDMAs merge into one layer, so this module support 4
layers.

Signed-off-by: Nancy.Lin 
Reviewed-by: AngeloGioacchino Del Regno 
Tested-by: AngeloGioacchino Del Regno 
Tested-by: Bo-Chen Chen 
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20230321121859.2355-4-nancy.lin@mediatek.com/
Signed-off-by: Chun-Kuang Hu