Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
drm/connector: hdmi: Create an HDMI sub-state
The next features we will need to share across drivers will need to
store some parameters for drivers to use, such as the selected output
format.
Let's create a new connector sub-state dedicated to HDMI controllers,
that will eventually store everything we need.
Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Reviewed-by: Sui Jingfeng <sui.jingfeng@linux.dev>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240527-kms-hdmi-connector-state-v15-3-c5af16c3aae2@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
+73
+7
drivers/gpu/drm/display/Kconfig
+7
drivers/gpu/drm/display/Kconfig
+2
drivers/gpu/drm/display/Makefile
+2
drivers/gpu/drm/display/Makefile
···
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drm_display_helper-$(CONFIG_DRM_DISPLAY_HDMI_HELPER) += \
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drm_hdmi_helper.o \
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drm_scdc_helper.o
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drm_display_helper-$(CONFIG_DRM_DISPLAY_HDMI_STATE_HELPER) += \
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drm_hdmi_state_helper.o
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drm_display_helper-$(CONFIG_DRM_DISPLAY_DP_AUX_CHARDEV) += drm_dp_aux_dev.o
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drm_display_helper-$(CONFIG_DRM_DISPLAY_DP_AUX_CEC) += drm_dp_cec.o
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+41
drivers/gpu/drm/display/drm_hdmi_state_helper.c
+41
drivers/gpu/drm/display/drm_hdmi_state_helper.c
···
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// SPDX-License-Identifier: MIT
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#include <drm/drm_atomic.h>
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#include <drm/drm_connector.h>
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#include <drm/display/drm_hdmi_state_helper.h>
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/**
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* __drm_atomic_helper_connector_hdmi_reset() - Initializes all HDMI @drm_connector_state resources
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* @connector: DRM connector
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* @new_conn_state: connector state to reset
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*
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* Initializes all HDMI resources from a @drm_connector_state without
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* actually allocating it. This is useful for HDMI drivers, in
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* combination with __drm_atomic_helper_connector_reset() or
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* drm_atomic_helper_connector_reset().
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*/
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void __drm_atomic_helper_connector_hdmi_reset(struct drm_connector *connector,
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struct drm_connector_state *new_conn_state)
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{
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}
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EXPORT_SYMBOL(__drm_atomic_helper_connector_hdmi_reset);
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/**
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* drm_atomic_helper_connector_hdmi_check() - Helper to check HDMI connector atomic state
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* @connector: DRM Connector
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* @state: the DRM State object
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*
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* Provides a default connector state check handler for HDMI connectors.
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* Checks that a desired connector update is valid, and updates various
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* fields of derived state.
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*
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* RETURNS:
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* Zero on success, or an errno code otherwise.
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*/
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int drm_atomic_helper_connector_hdmi_check(struct drm_connector *connector,
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struct drm_atomic_state *state)
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{
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return 0;
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}
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EXPORT_SYMBOL(drm_atomic_helper_connector_hdmi_check);
+16
include/drm/display/drm_hdmi_state_helper.h
+16
include/drm/display/drm_hdmi_state_helper.h
···
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/* SPDX-License-Identifier: MIT */
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#ifndef DRM_HDMI_STATE_HELPER_H_
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#define DRM_HDMI_STATE_HELPER_H_
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struct drm_atomic_state;
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struct drm_connector;
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struct drm_connector_state;
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void __drm_atomic_helper_connector_hdmi_reset(struct drm_connector *connector,
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struct drm_connector_state *new_conn_state);
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int drm_atomic_helper_connector_hdmi_check(struct drm_connector *connector,
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struct drm_atomic_state *state);
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#endif // DRM_HDMI_STATE_HELPER_H_
+7
include/drm/drm_connector.h
+7
include/drm/drm_connector.h
···
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* DRM blob property for HDR output metadata
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*/
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struct drm_property_blob *hdr_output_metadata;
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/**
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* @hdmi: HDMI-related variable and properties. Filled by
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* @drm_atomic_helper_connector_hdmi_check().
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*/
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struct {
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} hdmi;
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};
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/**