kernel.git/drivers/gpu/drm/mediatek/mtk_hdmi.c, branch linux-rolling-stable

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

2025-11-17T15:04:37Z

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: Add HDMI IP version configuration to pdata

2025-11-17T15:03:48Z

In preparation for adding a driver for the HDMIv2 IP and before moving the common bits out of this driver, add a new structure `mtk_hdmi_ver_conf`, holding pointers to HDMI IP version specific drm_bridge_funcs, hdmi_codec_ops and clock array used for probe, and nest it into the mtk_hdmi_conf platform data structure. While at it, also convert all of the direct users of mtk_hdmi_bridge_funcs, mtk_hdmi_audio_codec_ops, mtk_hdmi_clk_names to use pointers from the ver_conf platform data. In order to do so, it was also necessary to fill a new version 1 specific const `mtk_hdmi_v1_ver_conf` and assign it to all of the currently supported compatibles for this driver. This commit brings no functional change. 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-v11-3-7873ec4a1edf@collabora.com/ Signed-off-by: Chun-Kuang Hu

drm/mediatek: mtk_hdmi: Improve mtk_hdmi_get_all_clk() flexibility

2025-11-17T15:03:48Z

In preparation for splitting common bits of this driver and for introducing a new version of the MediaTek HDMI Encoder IP, improve the flexibility of function mtk_hdmi_get_all_clk() by adding a pointer to the clock names array and size of it to its parameters. Also change the array of struct clock pointers in the mtk_hdmi structure to be dynamically allocated, and allocate it in probe. 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-v11-2-7873ec4a1edf@collabora.com/ Signed-off-by: Chun-Kuang Hu

drm/mediatek: mtk_hdmi: Drop redundant clock retrieval in mtk_hdmi_get_cec_dev

2025-11-17T15:03:44Z

In mtk_hdmi driver, when the CEC device parsing logic was moved from mtk_hdmi_dt_parse_pdata function to the new mtk_hdmi_get_cec_dev sub function, the call to mtk_hdmi_get_all_clk was kept in both functions, whereas it was only called once in the original mtk_hdmi_dt_parse_pdata code and does not need to be called a second time. So, remove this call from mtk_hdmi_get_cec_dev to keep the same sequence as previously. Fixes: 7485be967f7f ("drm/mediatek: mtk_hdmi: Move CEC device parsing in new function") Reviewed-by: CK Hu Signed-off-by: Louis-Alexis Eyraud Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20251023-mediatek-drm-hdmi-v2-v11-1-7873ec4a1edf@collabora.com/ Signed-off-by: Chun-Kuang Hu

drm/mediatek: mtk_hdmi: Fix probe device leaks

2025-11-17T14:52:24Z

Make sure to drop the references to the DDC adapter and CEC device taken during probe on probe failure (e.g. probe deferral) and on driver unbind. Fixes: 8f83f26891e1 ("drm/mediatek: Add HDMI support") Cc: stable@vger.kernel.org # 4.8 Cc: Jie Qiu Signed-off-by: Johan Hovold Reviewed-by: AngeloGioacchino Del Regno Link: https://patchwork.kernel.org/project/dri-devel/patch/20250923152340.18234-5-johan@kernel.org/ Signed-off-by: Chun-Kuang Hu

drm/mediatek: mtk_hdmi: Fix inverted parameters in some regmap_update_bits calls

2025-08-28T23:15:41Z

In mtk_hdmi driver, a recent change replaced custom register access function calls by regmap ones, but two replacements by regmap_update_bits were done incorrectly, because original offset and mask parameters were inverted, so fix them. Fixes: d6e25b3590a0 ("drm/mediatek: hdmi: Use regmap instead of iomem for main registers") Signed-off-by: Louis-Alexis Eyraud Reviewed-by: CK Hu Link: https://patchwork.kernel.org/project/dri-devel/patch/20250818-mt8173-fix-hdmi-issue-v1-1-55aff9b0295d@collabora.com/ Signed-off-by: Chun-Kuang Hu

drm/bridge: Pass down connector to drm bridge detect hook

2025-07-14T15:23:18Z

In some application scenarios, we hope to get the corresponding connector when the bridge's detect hook is invoked. In most cases, we can get the connector by drm_atomic_get_connector_for_encoder if the encoder attached to the bridge is enabled, however there will still be some scenarios where the detect hook of the bridge is called but the corresponding encoder has not been enabled yet. For instance, this occurs when the device is hot plug in for the first time. Since the call to bridge's detect is initiated by the connector, passing down the corresponding connector directly will make things simpler. Signed-off-by: Andy Yan Reviewed-by: Dmitry Baryshkov Link: https://lore.kernel.org/r/20250703125027.311109-3-andyshrk@163.com [DB: added the chunk to the cdn-dp driver] Signed-off-by: Dmitry Baryshkov

Merge drm-next-2025-05-28 into drm-misc-next

2025-06-03T13:07:39Z

Christian needs a recent drm-next branch to merge fence patches. Signed-off-by: Maxime Ripard

drm: convert many bridge drivers from devm_kzalloc() to devm_drm_bridge_alloc() API

2025-05-23T13:03:47Z

devm_drm_bridge_alloc() is the new API to be used for allocating (and partially initializing) a private driver struct embedding a struct drm_bridge. For many drivers having a simple code flow in the probe function, this commit does a mass conversion automatically with the following semantic patch. The changes have been reviewed manually for correctness as well as to find any false positives. The patch has been applied with the explicit exclusion of bridge/panel.c, handled by a separate patch. After applying the semantic patch, manually fixed these issues: - 4 drivers need ERR_CAST() instead of PTR_ERR() as the function calling devm_drm_bridge_alloc() returns a pointer - re-added empty lines and comments that the script had removed but that should stay @@ type T; identifier C; identifier BR; expression DEV; expression FUNCS; @@ -T *C; +T *C; ... ( -C = devm_kzalloc(DEV, ...); -if (!C) - return -ENOMEM; +C = devm_drm_bridge_alloc(DEV, T, BR, FUNCS); +if (IS_ERR(C)) + return PTR_ERR(C); | -C = devm_kzalloc(DEV, ...); -if (!C) - return ERR_PTR(-ENOMEM); +C = devm_drm_bridge_alloc(DEV, T, BR, FUNCS); +if (IS_ERR(C)) + return PTR_ERR(C); ) ... -C->BR.funcs = FUNCS; Reviewed-by: Manikandan Muralidharan # microchip-lvds.c Reviewed-by: Douglas Anderson # parade-ps8640 Tested-by: Douglas Anderson # parade-ps8640 Acked-by: Maxime Ripard Link: https://lore.kernel.org/r/20250509-drm-bridge-convert-to-alloc-api-v3-2-b8bc1f16d7aa@bootlin.com [Luca: fixed trivial patch conflict in adv7511_drv.c while applying] Signed-off-by: Luca Ceresoli

Merge tag 'mediatek-drm-next-20250515' of https://git.kernel.org/pub/scm/linux/kernel/git/chunkuang.hu/linux into drm-next

2025-05-15T21:29:38Z

Mediatek DRM Next - 20250515 1. Prepare for support MT8195/88 HDMIv2 and DDCv2 2. DPI: Cleanups and add support for more formats 3. Cleanups and sanitization 4. Replace custom compare_dev with component_compare_of Signed-off-by: Dave Airlie From: Chun-Kuang Hu Link: https://lore.kernel.org/r/20250514233647.15907-1-chunkuang.hu@kernel.org