kernel/drivers/gpu/drm/bridge/synopsys, branch master

drm/bridge: dw-hdmi-qp: fix multi-channel audio output

2026-03-17T17:15:16Z

Channel Allocation (PB4) and Level Shift Information (PB5) are configured with values from PB1 and PB2 due to the wrong offset being used. This results in missing audio channels or incorrect speaker placement when playing multi-channel audio. Use the correct offset to fix multi-channel audio output. Fixes: fd0141d1a8a2 ("drm/bridge: synopsys: Add audio support for dw-hdmi-qp") Reported-by: Christian Hewitt Signed-off-by: Jonas Karlman Signed-off-by: Christian Hewitt Reviewed-by: Cristian Ciocaltea Link: https://patch.msgid.link/20260228112822.4056354-1-christianshewitt@gmail.com Signed-off-by: Luca Ceresoli

Merge drm/drm-fixes into drm-misc-fixes

2026-02-23T09:09:45Z

7.0-rc1 was just released, let's merge it to kick the new release cycle. Signed-off-by: Maxime Ripard

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51Z

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28Z

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

drm/bridge: synopsys: dw-dp: Check return value of devm_drm_bridge_add() in dw_dp_bind()

2026-02-20T12:47:09Z

Return the value of devm_drm_bridge_add() in order to propagate the error properly, if it fails due to resource allocation failure or bridge registration failure. This ensures that the bind function fails safely rather than proceeding with a potentially incomplete bridge setup. Fixes: b726970486d8 ("drm/bridge: synopsys: dw-dp: add bridge before attaching") Signed-off-by: Chen Ni Reviewed-by: Andy Yan Reviewed-by: Luca Ceresoli Link: https://patch.msgid.link/20260206040621.4095517-1-nichen@iscas.ac.cn Signed-off-by: Luca Ceresoli

BackMerge tag 'v6.19-rc7' into drm-next

2026-01-28T02:44:28Z

Linux 6.19-rc7 This is needed for msm and rust trees. Signed-off-by: Dave Airlie

drm/bridge: dw-hdmi: convert to of_drm_find_and_get_bridge()

2026-01-21T12:59:56Z

of_drm_find_bridge() is deprecated. Move to its replacement of_drm_find_and_get_bridge() which gets a bridge reference, and ensure it is put when done by using the drm_bridge::next_bridge pointer. Acked-by: Maxime Ripard Link: https://patch.msgid.link/20260109-drm-bridge-alloc-getput-drm_of_find_bridge-3-v2-1-8d7a3dbacdf4@bootlin.com Signed-off-by: Luca Ceresoli

drm/bridge: synopsys: dw-dp: fix error paths of dw_dp_bind

2026-01-20T14:19:50Z

Fix several issues in dw_dp_bind() error handling: 1. Missing return after drm_bridge_attach() failure - the function continued execution instead of returning an error. 2. Resource leak: drm_dp_aux_register() is not a devm function, so drm_dp_aux_unregister() must be called on all error paths after aux registration succeeds. This affects errors from: - drm_bridge_attach() - phy_init() - devm_add_action_or_reset() - platform_get_irq() - devm_request_threaded_irq() 3. Bug fix: platform_get_irq() returns the IRQ number or a negative error code, but the error path was returning ERR_PTR(ret) instead of ERR_PTR(dp->irq). Use a goto label for cleanup to ensure consistent error handling. Fixes: 86eecc3a9c2e ("drm/bridge: synopsys: Add DW DPTX Controller support library") Cc: stable@vger.kernel.org Signed-off-by: Osama Abdelkader Reviewed-by: Louis Chauvet Reviewed-by: Luca Ceresoli Link: https://patch.msgid.link/20260102155553.13243-1-osama.abdelkader@gmail.com Signed-off-by: Luca Ceresoli

drm/bridge: refactor HDMI InfoFrame callbacks

2026-01-19T11:11:46Z

Having only a single set of callbacks, hdmi_clear_infoframe and hdmi_write_infoframe, bridge drivers don't have an easy way to signal to the DRM framework, which InfoFrames are actually supported by the hardware and by the driver and which are not. Also, it makes it extremely easy for HDMI bridge drivers to skip implementing the seemingly required InfoFrames (e.g. HDMI VSI). Last, but not least, those callbacks take a single 'type' parameter, which makes it impossible to implement support for multiple VSIs (which will be required once we start working on HDMI Forum VSI). Split the callbacks into a per-InfoFrame-kind pairs, letting the bridge drivers actually signal supported features. The implementation follows the overall drm_bridge design, where the bridge has a single drm_bridge_funcs implementation and signals, which functions are to be called using the drm_bridge->ops flags. The AVI and HDMI VSI are assumed to be required for a normal HDMI operation (with the drivers getting a drm_warn_once() stub implementation if one is missing). The Audio InfoFrame is handled by the existing DRM_BRIDGE_OP_HDMI_AUDIO, while the SPD and HDR DRM InfoFrames got new drm_bridge_ops values. Acked-by: Maxime Ripard Link: https://patch.msgid.link/20260107-limit-infoframes-2-v4-5-213d0d3bd490@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov

drm/bridge: dw-hdmi-qp: Add support for missing HPD

2026-01-09T19:23:43Z

Add support for the dw-hdmi-qp driver to handle devices with missing HPD pins. Since in this situation we are now polling for the EDID data via i2c change the error message to a rate limited debug message when we are unable to complete an i2c read, as a disconnected device would otherwise fill dmesg with i2c read errors. Reviewed-by: Cristian Ciocaltea Signed-off-by: Chris Morgan Signed-off-by: Heiko Stuebner Link: https://patch.msgid.link/20251119225526.70588-3-macroalpha82@gmail.com