linux.git/drivers/gpu/drm/mediatek, branch v6.5

drm/mediatek: Replace all non-returning strlcpy with strscpy

2023-06-01T14:07:37+00:00

strlcpy() reads the entire source buffer first.
This read may exceed the destination size limit.
This is both inefficient and can lead to linear read
overflows if a source string is not NUL-terminated [1].
In an effort to remove strlcpy() completely [2], replace
strlcpy() here with strscpy().
No return values were used, so direct replacement is safe.

[1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strlcpy
[2] https://github.com/KSPP/linux/issues/89

Signed-off-by: Azeem Shaikh 
Reviewed-by: Kees Cook 
Signed-off-by: Kees Cook 
Link: https://lore.kernel.org/r/20230522155306.2336889-1-azeemshaikh38@gmail.com

drm/mediatek: dp: Change the aux retries times when receiving AUX_DEFER

2023-04-03T16:49:49+00:00

DP 1.4a Section 2.8.7.1.5.6.1:
A DP Source device shall retry at least seven times upon receiving
AUX_DEFER before giving up the AUX transaction.

The drm_dp_i2c_do_msg() function in the drm_dp_helper.c file will
judge the status of the msg->reply parameter passed to aux_transfer
for different processing.

Fixes: f70ac097a2cf ("drm/mediatek: Add MT8195 Embedded DisplayPort driver")
Signed-off-by: Xinlei Lee 
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/1680072203-10394-1-git-send-email-xinlei.lee@mediatek.com/
Signed-off-by: Chun-Kuang Hu

drm/mediatek: Add ovl_adaptor get format function

2023-04-03T03:06:01+00:00

1. Add ovl_adaptor get_format and get_num_formats component function.
The two functions are needed for getting the supported format in
mtk_plane_init().
2. Get supported format from the ovl_adaptor's rdma engine - mdp_rdma.

Signed-off-by: Nancy.Lin 
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20230330032614.18837-3-nancy.lin@mediatek.com/
Signed-off-by: Chun-Kuang Hu

drm/mediatek: Add mdp_rdma get format function

2023-04-03T03:02:29+00:00

Add mdp_rdma get_format and get_num_formats function.

Signed-off-by: Nancy.Lin 
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20230330032614.18837-2-nancy.lin@mediatek.com/
Signed-off-by: Chun-Kuang Hu

drm/mediatek: Add mediatek-drm of vdosys0 support for mt8188

2023-03-28T00:03:08+00:00

Add driver data of mt8188 vdosys0 to mediatek-drm and the sub driver.

Signed-off-by: amy zhang 
Signed-off-by: Nathan Lu 
Signed-off-by: Jason-JH.Lin 
Reviewed-by: AngeloGioacchino Del Regno 
Reviewed-by: Matthias Brugger 
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20230324100553.13719-1-jason-jh.lin@mediatek.com/
Signed-off-by: Chun-Kuang Hu

drm/mediatek: Add mediatek-drm of vdosys1 support for MT8195

2023-03-22T16:47:36+00:00

Add driver data of mt8195 vdosys1 to mediatek-drm.

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/20230321121859.2355-8-nancy.lin@mediatek.com/
Signed-off-by: Chun-Kuang Hu

drm/mediatek: Add drm ovl_adaptor sub driver for MT8195

2023-03-22T16:45:23+00:00

Add drm ovl_adaptor sub driver. Bring up ovl_adaptor sub driver if
the component exists in the path.

Signed-off-by: Nancy.Lin 
Reviewed-by: AngeloGioacchino Del Regno 
Tested-by: AngeloGioacchino Del Regno 
Tested-by: Bo-Chen Chen 
Tested-by: Nícolas F. R. A. Prado 
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20230321121859.2355-7-nancy.lin@mediatek.com/
Signed-off-by: Chun-Kuang Hu

drm/mediatek: Modify mediatek-drm for mt8195 multi mmsys support

2023-03-22T16:33:42+00:00

MT8195 have two mmsys. Modify drm for MT8195 multi-mmsys support.
The two mmsys (vdosys0 and vdosys1) will bring up two drm drivers,
only one drm driver register as the drm device.
Each drm driver binds its own component. The last bind drm driver
allocates and registers the drm device to drm core.
Each crtc path is created with the corresponding drm driver data.

Signed-off-by: Nancy.Lin 
Reviewed-by: AngeloGioacchino Del Regno 
Tested-by: AngeloGioacchino Del Regno 
Tested-by: Bo-Chen Chen 
Tested-by: Nícolas F. R. A. Prado 
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20230321121859.2355-6-nancy.lin@mediatek.com/
Signed-off-by: Chun-Kuang Hu

drm/mediatek: Add dma dev get function

2023-03-22T16:31:21+00:00

This is a preparation for adding support for the ovl_adaptor sub driver
Ovl_adaptor is a DRM sub driver, which doesn't have dma dev. Add
dma_dev_get function for getting representative dma dev in ovl_adaptor.

Signed-off-by: Nancy.Lin 
Reviewed-by: AngeloGioachino Del Regno 
Tested-by: AngeloGioacchino Del Regno 
Tested-by: Bo-Chen Chen 
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20230321121859.2355-5-nancy.lin@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