linux-stable.git/drivers/gpu/drm/mediatek, branch v6.7.2

drm/mediatek: dp: Add phy_mtk_dp module as pre-dependency

2024-01-25T23:45:06+00:00

[ Upstream commit c8048dd0b07df68724805254b9e994d99e9a7af4 ]

The mtk_dp driver registers a phy device which is handled by the
phy_mtk_dp driver and assumes that the phy probe will complete
synchronously, proceeding to make use of functionality exposed by that
driver right away. This assumption however is false when the phy driver
is built as a module, causing the mtk_dp driver to fail probe in this
case.

Add the phy_mtk_dp module as a pre-dependency to the mtk_dp module to
ensure the phy module has been loaded before the dp, so that the phy
probe happens synchrounously and the mtk_dp driver can probe
successfully even with the phy driver built as a module.

Suggested-by: AngeloGioacchino Del Regno 
Fixes: f70ac097a2cf ("drm/mediatek: Add MT8195 Embedded DisplayPort driver")
Signed-off-by: Nícolas F. R. A. Prado 
Reviewed-by: AngeloGioacchino Del Regno 
Reviewed-by: Guillaume Ranquet 
Link: https://patchwork.kernel.org/project/dri-devel/patch/20231121142938.460846-1-nfraprado@collabora.com/
Signed-off-by: Chun-Kuang Hu 
Signed-off-by: Sasha Levin

drm/mediatek: Fix underrun in VDO1 when switches off the layer

2024-01-25T23:45:04+00:00

[ Upstream commit 73b5ab27ab2ee616f2709dc212c2b0007894a12e ]

Do not reset Merge while using CMDQ because reset API doesn't
wait for frame done event as CMDQ does and could lead to
underrun when the layer is switching off.

Fixes: aaf94f7c3ae6 ("drm/mediatek: Add display merge async reset control")

Reviewed-by: CK Hu 
Reviewed-by: AngeloGioacchino Del Regno 
Signed-off-by: Hsiao Chien Sung 
Link: https://patchwork.kernel.org/project/dri-devel/patch/20231214055847.4936-23-shawn.sung@mediatek.com/
Signed-off-by: Chun-Kuang Hu 
Signed-off-by: Sasha Levin

drm/mediatek: Remove the redundant driver data for DPI

2024-01-25T23:45:04+00:00

[ Upstream commit 8ac6935e5689a491f0bec78fec732722b3dad094 ]

DPI input is in 1T2P mode on both MT8195 and MT8188.
Remove the redundant driver data to align the settings, or
the screen will glitch.

Fixes: 2847cd7e6403 ("drm/mediatek: Add mt8188 dpi compatibles and platform data")

Reviewed-by: CK Hu 
Reviewed-by: AngeloGioacchino Del Regno 
Signed-off-by: Hsiao Chien Sung 
Link: https://patchwork.kernel.org/project/dri-devel/patch/20231214055847.4936-22-shawn.sung@mediatek.com/
Signed-off-by: Chun-Kuang Hu 
Signed-off-by: Sasha Levin

drm/mediatek: Return error if MDP RDMA failed to enable the clock

2024-01-25T23:45:04+00:00

[ Upstream commit 21b287146adf39304193e4c49198021e06a28ded ]

Return the result of clk_prepare_enable() instead of
always returns 0.

Fixes: f8946e2b6bb2 ("drm/mediatek: Add display MDP RDMA support for MT8195")

Reviewed-by: CK Hu 
Reviewed-by: AngeloGioacchino Del Regno 
Signed-off-by: Hsiao Chien Sung 
Link: https://patchwork.kernel.org/project/dri-devel/patch/20231214055847.4936-21-shawn.sung@mediatek.com/
Signed-off-by: Chun-Kuang Hu 
Signed-off-by: Sasha Levin

drm/mediatek: Fix access violation in mtk_drm_crtc_dma_dev_get

2023-12-11T14:40:05+00:00

Add error handling to check NULL input in
mtk_drm_crtc_dma_dev_get function.

While display path is not configured correctly, none of crtc is
established. So the caller of mtk_drm_crtc_dma_dev_get may pass
input parameter *crtc as NULL, Which may cause coredump when
we try to get the container of NULL pointer.

Fixes: cb1d6bcca542 ("drm/mediatek: Add dma dev get function")
Signed-off-by: Stuart Lee 
Cc: stable@vger.kernel.org
Reviewed-by: AngeloGioacchino DEl Regno 
Tested-by: Macpaul Lin 
Link: https://patchwork.kernel.org/project/dri-devel/patch/20231110012914.14884-2-stuart.lee@mediatek.com/
Signed-off-by: Chun-Kuang Hu

drm/mediatek: Add spinlock for setting vblank event in atomic_begin

2023-11-26T00:26:07+00:00

Add spinlock protection to avoid race condition on vblank event
between mtk_drm_crtc_atomic_begin() and mtk_drm_finish_page_flip().

Fixes: 119f5173628a ("drm/mediatek: Add DRM Driver for Mediatek SoC MT8173.")
Signed-off-by: Jason-JH.Lin 
Suggested-by: AngeloGioacchino Del Regno 
Reviewed-by: Alexandre Mergnat 
Reviewed-by: Fei Shao 
Tested-by: Fei Shao 
Reviewed-by: AngeloGioacchino Del Regno 
Reviewed-by: CK Hu 
Link: https://patchwork.kernel.org/project/dri-devel/patch/20230920090658.31181-1-jason-jh.lin@mediatek.com/
Signed-off-by: Chun-Kuang Hu

drm/mediatek: fix kernel oops if no crtc is found

2023-11-23T15:04:52+00:00

drm_crtc_from_index(0) might return NULL if there are no CRTCs
registered at all which will lead to a kernel oops in
mtk_drm_crtc_dma_dev_get(). Add the missing return value check.

Fixes: 0d9eee9118b7 ("drm/mediatek: Add drm ovl_adaptor sub driver for MT8195")
Signed-off-by: Michael Walle 
Reviewed-by: Nícolas F. R. A. Prado 
Tested-by: Nícolas F. R. A. Prado 
Reviewed-by: AngeloGioacchino Del Regno 
Tested-by: Eugen Hristev 
Reviewed-by: Eugen Hristev 
Link: https://patchwork.kernel.org/project/dri-devel/patch/20230905084922.3908121-1-mwalle@kernel.org/
Signed-off-by: Chun-Kuang Hu

drm/mediatek: mtk_disp_gamma: Fix breakage due to merge issue

2023-11-23T14:49:47+00:00

While the commit that was sent to the mailing lists was fine, something
happened during merge and the mtk_gamma_set() function got broken as
a writel() was turned into a readl().

Fix that by changing that back to the expected writel().

Fixes: a6b39cd248f3 ("drm/mediatek: De-commonize disp_aal/disp_gamma gamma_set functions")
Signed-off-by: AngeloGioacchino Del Regno 
Link: https://patchwork.kernel.org/project/dri-devel/patch/20231025104940.140605-1-angelogioacchino.delregno@collabora.com/
Signed-off-by: Chun-Kuang Hu

BackMerge tag 'v6.6-rc7' into drm-next

2023-10-23T08:20:06+00:00

This is needed to add the msm pr which is based on a higher base.

Signed-off-by: Dave Airlie

Merge tag 'mediatek-drm-next-6.7' of https://git.kernel.org/pub/scm/linux/kernel/git/chunkuang.hu/linux into drm-next

2023-10-20T06:34:38+00:00

Mediatek DRM Next for Linux 6.7

1. Add support MT8188 dsi function
2. Fix coverity issue with unintentional integer overflow
3. Add support MT8188 dp/edp function
4. Fix memory leak on ->get_edid callback audio detection
   and error path.
5. Add connector dynamic selection capability
6. MediaTek DDP GAMMA - 12-bit LUT support
7. mtk_dsi: Fix NO_EOT_PACKET settings/handling

[airlied: add bitfield.h include]
Signed-off-by: Dave Airlie 

From: Chun-Kuang Hu 
Link: https://patchwork.freedesktop.org/patch/msgid/20231018135846.5811-1-chunkuang.hu@kernel.org