kernel/linux.git/drivers/gpu/drm/xlnx, branch v6.12.80

drm: xlnx: zynqmp: Fix max dma segment size

2025-04-10T12:39:13+00:00

[ Upstream commit 28b529a98525123acd37372a04d21e87ec2edcf7 ] Fix "mapping sg segment longer than device claims to support" warning by setting the max segment size. Fixes: d76271d22694 ("drm: xlnx: DRM/KMS driver for Xilinx ZynqMP DisplayPort Subsystem") Reviewed-by: Sean Anderson Tested-by: Sean Anderson Signed-off-by: Tomi Valkeinen Link: https://patchwork.freedesktop.org/patch/msgid/20250115-xilinx-formats-v2-10-160327ca652a@ideasonboard.com Signed-off-by: Sasha Levin

drm: xlnx: zynqmp_dpsub: fix hotplug detection

2024-12-09T09:41:13+00:00

commit 71ba1c9b1c717831920c3d432404ee5a707e04b4 upstream. drm_kms_helper_poll_init needs to be called after zynqmp_dpsub_kms_init. zynqmp_dpsub_kms_init creates the connector and without it we don't enable hotplug detection. Fixes: eb2d64bfcc17 ("drm: xlnx: zynqmp_dpsub: Report HPD through the bridge") Cc: stable@vger.kernel.org Signed-off-by: Steffen Dirkwinkel Signed-off-by: Tomi Valkeinen Link: https://patchwork.freedesktop.org/patch/msgid/20241028134218.54727-1-lists@steffen.cc Signed-off-by: Greg Kroah-Hartman

drm: xlnx: zynqmp_disp: layer may be null while releasing

2024-12-05T13:01:51+00:00

[ Upstream commit 223842c7702b52846b1c5aef8aca7474ec1fd29b ] layer->info can be null if we have an error on the first layer in zynqmp_disp_create_layers Fixes: 1836fd5ed98d ("drm: xlnx: zynqmp_dpsub: Minimize usage of global flag") Signed-off-by: Steffen Dirkwinkel Signed-off-by: Tomi Valkeinen Link: https://patchwork.freedesktop.org/patch/msgid/20241028133941.54264-1-lists@steffen.cc Signed-off-by: Sasha Levin

drm: zynqmp_kms: Unplug DRM device before removal

2024-12-05T13:01:50+00:00

[ Upstream commit 2e07c88914fc5289c21820b1aa94f058feb38197 ] Prevent userspace accesses to the DRM device from causing use-after-frees by unplugging the device before we remove it. This causes any further userspace accesses to result in an error without further calls into this driver's internals. Fixes: d76271d22694 ("drm: xlnx: DRM/KMS driver for Xilinx ZynqMP DisplayPort Subsystem") Closes: https://lore.kernel.org/dri-devel/4d8f4c9b-2efb-4774-9a37-2f257f79b2c9@linux.dev/ Signed-off-by: Sean Anderson Signed-off-by: Tomi Valkeinen Link: https://patchwork.freedesktop.org/patch/msgid/20240809193600.3360015-2-sean.anderson@linux.dev Signed-off-by: Sasha Levin

drm/bridge-connector: move to DRM_DISPLAY_HELPER module

2024-09-03T08:18:31+00:00

drm_bridge_connector is a "leaf" driver, belonging to the display helper, rather than the "CRTC" drm_kms_helper module. Move the driver to the drm/display and add necessary Kconfig selection clauses. Suggested-by: Maxime Ripard Acked-by: Maxime Ripard Signed-off-by: Dmitry Baryshkov Link: https://patchwork.freedesktop.org/patch/msgid/20240903-drm-bridge-connector-fix-hdmi-reset-v5-2-daebde6d9857@linaro.org Signed-off-by: Maxime Ripard

drm: zynqmp_dp: Don't delay work

2024-06-17T07:38:18+00:00

We always call scheduled_delayed_work with no delay, so just use a non-delayed work_struct instead. Signed-off-by: Sean Anderson Reviewed-by: Tomi Valkeinen Signed-off-by: Tomi Valkeinen Link: https://patchwork.freedesktop.org/patch/msgid/20240503192922.2172314-4-sean.anderson@linux.dev

drm: zynqmp_dp: Rearrange zynqmp_dp for better padding

2024-06-17T07:38:17+00:00

Sort the members of struct zynqmp_dp to reduce padding necessary for alignment. Signed-off-by: Sean Anderson Signed-off-by: Tomi Valkeinen Link: https://patchwork.freedesktop.org/patch/msgid/20240503192922.2172314-3-sean.anderson@linux.dev

drm: zynqmp_kms: Fix AUX bus not getting unregistered

2024-06-17T07:38:17+00:00

drm_encoder_cleanup is responsible for calling drm_bridge_detach for each bridge attached to the encoder. zynqmp_dp_bridge_detach is in turn responsible for unregistering the AUX bus. However, we never ended up calling drm_encoder_cleanup in the remove or error paths, so the AUX bus would stick around after the rest of the driver had been removed. I don't really understand why drm_mode_config_cleanup doesn't call drm_encoder_cleanup for us. It will call destroy (which for simple_encoder is drm_encoder_cleanup) on encoders in the mode_config's encoder_list. Should drm_encoder_cleanup get called before or after drm_atomic_helper_shutdown? Fixes: 2dfd045c8435 ("drm: xlnx: zynqmp_dpsub: Register AUX bus at bridge attach time") Signed-off-by: Sean Anderson Signed-off-by: Tomi Valkeinen Link: https://patchwork.freedesktop.org/patch/msgid/20240503192922.2172314-2-sean.anderson@linux.dev

drm: xlnx: zynqmp_dpsub: Enable plane in atomic update

2024-06-17T07:37:14+00:00

Unconditionally enable the DPSUB layer in the corresponding atomic plane update callback. Setting the new display mode may require disabling and re-enabling the CRTC. This effectively resets DPSUB to the default state with all layers disabled. The original implementation of the plane atomic update enables the corresponding DPSUB layer only if the framebuffer format has changed. This would leave the layer disabled after switching to a different display mode with the same framebuffer format. Signed-off-by: Anatoliy Klymenko Signed-off-by: Tomi Valkeinen Link: https://patchwork.freedesktop.org/patch/msgid/20240523-dp-layer-enable-v2-1-d799020098fc@amd.com

drm: zynqmp_dpsub: Fix an error handling path in zynqmp_dpsub_probe()

2024-06-17T07:36:55+00:00

If zynqmp_dpsub_drm_init() fails, we must undo the previous drm_bridge_add() call. Fixes: be3f3042391d ("drm: zynqmp_dpsub: Always register bridge") Signed-off-by: Christophe JAILLET Reviewed-by: Sean Anderson Reviewed-by: Laurent Pinchart Signed-off-by: Tomi Valkeinen Link: https://patchwork.freedesktop.org/patch/msgid/974d1b062d7c61ee6db00d16fa7c69aa1218ee02.1716198025.git.christophe.jaillet@wanadoo.fr