diff options
| -rw-r--r-- | drivers/gpu/drm/display/Kconfig | 7 | ||||
| -rw-r--r-- | drivers/gpu/drm/display/Makefile | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/display/drm_hdmi_state_helper.c | 41 | ||||
| -rw-r--r-- | include/drm/display/drm_hdmi_state_helper.h | 16 | ||||
| -rw-r--r-- | include/drm/drm_connector.h | 7 |
5 files changed, 73 insertions, 0 deletions
diff --git a/drivers/gpu/drm/display/Kconfig b/drivers/gpu/drm/display/Kconfig index 864a6488bfdf..14114b597ef4 100644 --- a/drivers/gpu/drm/display/Kconfig +++ b/drivers/gpu/drm/display/Kconfig @@ -70,3 +70,10 @@ config DRM_DISPLAY_HDMI_HELPER depends on DRM_DISPLAY_HELPER help DRM display helpers for HDMI. + +config DRM_DISPLAY_HDMI_STATE_HELPER + bool + depends on DRM_DISPLAY_HELPER + depends on DRM_DISPLAY_HDMI_HELPER + help + DRM KMS state helpers for HDMI. diff --git a/drivers/gpu/drm/display/Makefile b/drivers/gpu/drm/display/Makefile index 17d2cc73ff56..629df2f4d322 100644 --- a/drivers/gpu/drm/display/Makefile +++ b/drivers/gpu/drm/display/Makefile @@ -14,6 +14,8 @@ drm_display_helper-$(CONFIG_DRM_DISPLAY_HDCP_HELPER) += drm_hdcp_helper.o drm_display_helper-$(CONFIG_DRM_DISPLAY_HDMI_HELPER) += \ drm_hdmi_helper.o \ drm_scdc_helper.o +drm_display_helper-$(CONFIG_DRM_DISPLAY_HDMI_STATE_HELPER) += \ + drm_hdmi_state_helper.o drm_display_helper-$(CONFIG_DRM_DISPLAY_DP_AUX_CHARDEV) += drm_dp_aux_dev.o drm_display_helper-$(CONFIG_DRM_DISPLAY_DP_AUX_CEC) += drm_dp_cec.o diff --git a/drivers/gpu/drm/display/drm_hdmi_state_helper.c b/drivers/gpu/drm/display/drm_hdmi_state_helper.c new file mode 100644 index 000000000000..1e92c1108d23 --- /dev/null +++ b/drivers/gpu/drm/display/drm_hdmi_state_helper.c @@ -0,0 +1,41 @@ +// SPDX-License-Identifier: MIT + +#include <drm/drm_atomic.h> +#include <drm/drm_connector.h> + +#include <drm/display/drm_hdmi_state_helper.h> + +/** + * __drm_atomic_helper_connector_hdmi_reset() - Initializes all HDMI @drm_connector_state resources + * @connector: DRM connector + * @new_conn_state: connector state to reset + * + * Initializes all HDMI resources from a @drm_connector_state without + * actually allocating it. This is useful for HDMI drivers, in + * combination with __drm_atomic_helper_connector_reset() or + * drm_atomic_helper_connector_reset(). + */ +void __drm_atomic_helper_connector_hdmi_reset(struct drm_connector *connector, + struct drm_connector_state *new_conn_state) +{ +} +EXPORT_SYMBOL(__drm_atomic_helper_connector_hdmi_reset); + +/** + * drm_atomic_helper_connector_hdmi_check() - Helper to check HDMI connector atomic state + * @connector: DRM Connector + * @state: the DRM State object + * + * Provides a default connector state check handler for HDMI connectors. + * Checks that a desired connector update is valid, and updates various + * fields of derived state. + * + * RETURNS: + * Zero on success, or an errno code otherwise. + */ +int drm_atomic_helper_connector_hdmi_check(struct drm_connector *connector, + struct drm_atomic_state *state) +{ + return 0; +} +EXPORT_SYMBOL(drm_atomic_helper_connector_hdmi_check); diff --git a/include/drm/display/drm_hdmi_state_helper.h b/include/drm/display/drm_hdmi_state_helper.h new file mode 100644 index 000000000000..837899db315a --- /dev/null +++ b/include/drm/display/drm_hdmi_state_helper.h @@ -0,0 +1,16 @@ +/* SPDX-License-Identifier: MIT */ + +#ifndef DRM_HDMI_STATE_HELPER_H_ +#define DRM_HDMI_STATE_HELPER_H_ + +struct drm_atomic_state; +struct drm_connector; +struct drm_connector_state; + +void __drm_atomic_helper_connector_hdmi_reset(struct drm_connector *connector, + struct drm_connector_state *new_conn_state); + +int drm_atomic_helper_connector_hdmi_check(struct drm_connector *connector, + struct drm_atomic_state *state); + +#endif // DRM_HDMI_STATE_HELPER_H_ diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index 7ef1ff83d885..5fe3f6a519cd 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -1031,6 +1031,13 @@ struct drm_connector_state { * DRM blob property for HDR output metadata */ struct drm_property_blob *hdr_output_metadata; + + /** + * @hdmi: HDMI-related variable and properties. Filled by + * @drm_atomic_helper_connector_hdmi_check(). + */ + struct { + } hdmi; }; /** |