linux.git/drivers/gpu/drm/display/Kconfig, branch v6.14

drm/display/hdmi: implement hotplug functions

2025-01-04T06:47:11+00:00

The HDMI Connectors need to perform a variety of tasks when the HDMI
connector state changes. Such tasks include setting or invalidating CEC
address, notifying HDMI codec driver, updating scrambler data, etc.

Implementing such tasks in a driver-specific callbacks is error prone.
Start implementing the generic helper function (currently handling only
the HDMI Codec framework) to be used by drivers utilizing HDMI Connector
framework.

Reviewed-by: Maxime Ripard 
Tested-by: Dave Stevenson 
Link: https://patchwork.freedesktop.org/patch/msgid/20241224-drm-bridge-hdmi-connector-v10-6-dc89577cd438@linaro.org
Signed-off-by: Dmitry Baryshkov

drm/bridge: connector: add support for HDMI codec framework

2025-01-04T06:47:11+00:00

Add necessary glue code to be able to use new HDMI codec framework from
the DRM bridge drivers. The drm_bridge implements a limited set of the
hdmi_codec_ops interface, with the functions accepting both
drm_connector and drm_bridge instead of just a generic void pointer.

This framework is integrated with the DRM HDMI Connector framework, but
can also be used for DisplayPort connectors.

Reviewed-by: Maxime Ripard 
Tested-by: Dave Stevenson 
Link: https://patchwork.freedesktop.org/patch/msgid/20241224-drm-bridge-hdmi-connector-v10-4-dc89577cd438@linaro.org
Signed-off-by: Dmitry Baryshkov

drm/connector: implement generic HDMI audio helpers

2025-01-04T06:47:11+00:00

Several DRM drivers implement HDMI codec support (despite its name it
applies to both HDMI and DisplayPort drivers). Implement generic
framework to be used by these drivers. This removes a requirement to
implement get_eld() callback and provides default implementation for
codec's plug handling.

Acked-by: Maxime Ripard 
Tested-by: Dave Stevenson 
Link: https://patchwork.freedesktop.org/patch/msgid/20241224-drm-bridge-hdmi-connector-v10-3-dc89577cd438@linaro.org
Signed-off-by: Dmitry Baryshkov

drm/display: Drop obsolete dependency on COMPILE_TEST

2024-10-18T10:06:55+00:00

Since commit 0166dc11be91 ("of: make CONFIG_OF user selectable"), it
is possible to test-build any driver which depends on OF on any
architecture by explicitly selecting OF. Therefore depending on
COMPILE_TEST as an alternative is no longer needed.

To avoid reintroducing the randconfig bug originally fixed by commit
876271118aa4 ("drm/display: Fix build error without CONFIG_OF"),
DRM_MSM which selects DRM_DISPLAY_DP_HELPER must explicitly depend
on OF. This is consistent with what all other DRM drivers are doing.

Signed-off-by: Jean Delvare 
Reviewed-by: Javier Martinez Canillas 
Cc: David Airlie 
Cc: Daniel Vetter 
Acked-by: Douglas Anderson 
Acked-by: Dmitry Baryshkov 
Reviewed-by: Abhinav Kumar 
Link: https://patchwork.freedesktop.org/patch/msgid/20241015134606.5b87093e@endymion.delvare
Signed-off-by: Dmitry Baryshkov

Merge drm/drm-next into drm-misc-next

2024-09-11T07:48:49+00:00

Backmerging to get fixes from v6.12-rc7.

Signed-off-by: Thomas Zimmermann

drm/bridge-connector: reset the HDMI connector state

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

On HDMI connectors which use drm_bridge_connector and DRM_BRIDGE_OP_HDMI
IGT chokes on the max_bpc property in several kms_properties tests due
to the drm_bridge_connector failing to reset HDMI-related
properties.

Call __drm_atomic_helper_connector_hdmi_reset() if the
drm_bridge_connector has bridge_hdmi.

It is impossible to call this function from HDMI bridges, none of the
bridge callbacks correspond to the drm_connector_funcs::reset().

Fixes: 6b4468b0c6ba ("drm/bridge-connector: implement glue code for HDMI connector")
Reviewed-by: Maxime Ripard 
Acked-by: Maxime Ripard 
Reviewed-by: Abhinav Kumar 
Signed-off-by: Dmitry Baryshkov 
Link: https://patchwork.freedesktop.org/patch/msgid/20240903-drm-bridge-connector-fix-hdmi-reset-v5-3-daebde6d9857@linaro.org
Signed-off-by: Maxime Ripard

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/display: stop depending on DRM_DISPLAY_HELPER

2024-09-03T08:18:28+00:00

Kconfig symbols should not declare dependency on DRM_DISPLAY_HELPER.
Move all parts of DRM_DISPLAY_HELPER to an if DRM_DISPLAY_HELPER block.

It is not possible to make those symbols select DRM_DISPLAY_HELPER
because of the link issues when a part of the helper is selected to be
built-in, while other part is selected to be as module. In such a case
the modular part doesn't get built at all, leading to undefined symbols.

The only viable alternative is to split drm_display_helper.ko into
several small modules, each of them having their own dependencies.

Suggested-by: Maxime Ripard 
Signed-off-by: Dmitry Baryshkov 
Link: https://patchwork.freedesktop.org/patch/msgid/20240903-drm-bridge-connector-fix-hdmi-reset-v5-1-daebde6d9857@linaro.org
Signed-off-by: Maxime Ripard

drm/display: split DSC helpers from DP helpers

2024-09-02T21:13:44+00:00

Currently the DRM DSC functions are selected by the
DRM_DISPLAY_DP_HELPER Kconfig symbol. This is not optimal, since the DSI
code (both panel and host drivers) end up selecting the seemingly
irrelevant DP helpers. Split the DSC code to be guarded by the separate
DRM_DISPLAY_DSC_HELPER Kconfig symbol.

Reviewed-by: Jessica Zhang 
Reviewed-by: Marijn Suijten 
Acked-by: Rodrigo Vivi  #i915
Acked-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20240704-panel-sw43408-fix-v6-1-3ea1c94bbb9b@linaro.org
Signed-off-by: Dmitry Baryshkov

drm/display: Fix HDMI state helper dependency

2024-05-29T09:37:03+00:00

During the life of the series that introduced the
DRM_DISPLAY_HDMI_STATE_HELPER option, we reworked the Kconfig option
dependency setup to rely on depends on with commit f6d2dc03fa85 ("drm:
Switch DRM_DISPLAY_HDMI_HELPER to depends on") which got reverted later
on because it was creating too many issues by commit d7c128cb775e
("Revert "drm: Switch DRM_DISPLAY_HDMI_HELPER to depends on"").

However, since the series was out of tree at that time,
DRM_DISPLAY_HDMI_STATE_HELPER wasn't properly updated to take the revert
into account and is now creating build issues.

Let's switch the depends on to a select to fix this.

Reported-by: kernel test robot 
Closes: https://lore.kernel.org/oe-kbuild-all/202405290332.Sqtt0ix0-lkp@intel.com/
Closes: https://lore.kernel.org/oe-kbuild-all/202405290438.TOYhXMIn-lkp@intel.com/
Closes: https://lore.kernel.org/oe-kbuild-all/202405290803.c3178DYT-lkp@intel.com/
Closes: https://lore.kernel.org/oe-kbuild-all/202405291109.PQdqc46g-lkp@intel.com/
Closes: https://lore.kernel.org/oe-kbuild-all/202405291221.a0NStxHE-lkp@intel.com/
Closes: https://lore.kernel.org/oe-kbuild-all/202405291636.8GgBtK8u-lkp@intel.com/
Fixes: 54cb39e2293b ("drm/connector: hdmi: Create an HDMI sub-state")
Reviewed-by: Javier Martinez Canillas 
Reviewed-by: Dmitry Baryshkov 
Link: https://patchwork.freedesktop.org/patch/msgid/20240529080013.2325748-1-mripard@kernel.org
Signed-off-by: Maxime Ripard