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charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20240321-kms-hdmi-connector-state-v10-3-e6c178361898@kernel.org> References: <20240321-kms-hdmi-connector-state-v10-0-e6c178361898@kernel.org> In-Reply-To: <20240321-kms-hdmi-connector-state-v10-0-e6c178361898@kernel.org> To: Maarten Lankhorst , Thomas Zimmermann , David Airlie , Daniel Vetter , Jonathan Corbet , Sandy Huang , =?utf-8?q?Heiko_St=C3=BCbner?= , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland Cc: Hans Verkuil , Sebastian Wick , =?utf-8?q?Ville_Syrj=C3=A4l=C3=A4?= , dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-rockchip@lists.infradead.org, linux-sunxi@lists.linux.dev, Maxime Ripard , Dave Stevenson X-Mailer: b4 0.12.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=4757; i=mripard@kernel.org; h=from:subject:message-id; bh=hFLZVzLwZ7Ba7ngonTaSWS96nfPoT7tQenASBO+3D2E=; b=owGbwMvMwCX2+D1vfrpE4FHG02pJDKl/gpy3LI40VLRX2PN9Qfy6swv+uazeVHKL1df0vrHSG 4FF8kb3O0pZGMS4GGTFFFlihM2XxJ2a9bqTjW8ezBxWJpAhDFycAjARvicM/zMOsNnviFg3w+TM jUnHtuzcvWGKqOPxJcm55asL/5/QszZnZNj4Ql/Ce73PtJVhj604FR0c+Yv+TxCo3yHH8sNhZfm 7VDYA X-Developer-Key: i=mripard@kernel.org; a=openpgp; fpr=BE5675C37E818C8B5764241C254BCFC56BF6CE8D 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 Signed-off-by: Maxime Ripard --- drivers/gpu/drm/drm_atomic_state_helper.c | 35 +++++++++++++++++++++++++++++++ include/drm/drm_atomic_state_helper.h | 4 ++++ include/drm/drm_connector.h | 7 +++++++ 3 files changed, 46 insertions(+) diff --git a/drivers/gpu/drm/drm_atomic_state_helper.c b/drivers/gpu/drm/drm_atomic_state_helper.c index 519228eb1095..8f459aaa8ef4 100644 --- a/drivers/gpu/drm/drm_atomic_state_helper.c +++ b/drivers/gpu/drm/drm_atomic_state_helper.c @@ -569,10 +569,26 @@ void drm_atomic_helper_connector_tv_reset(struct drm_connector *connector) drm_atomic_helper_connector_tv_margins_reset(connector); } EXPORT_SYMBOL(drm_atomic_helper_connector_tv_reset); +/** + * __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_tv_check - Validate an analog TV connector state * @connector: DRM Connector * @state: the DRM State object * @@ -618,10 +634,29 @@ int drm_atomic_helper_connector_tv_check(struct drm_connector *connector, return 0; } EXPORT_SYMBOL(drm_atomic_helper_connector_tv_check); +/** + * 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); + /** * __drm_atomic_helper_connector_duplicate_state - copy atomic connector state * @connector: connector object * @state: atomic connector state * diff --git a/include/drm/drm_atomic_state_helper.h b/include/drm/drm_atomic_state_helper.h index b9740edb2658..b8bdd366104d 100644 --- a/include/drm/drm_atomic_state_helper.h +++ b/include/drm/drm_atomic_state_helper.h @@ -69,11 +69,15 @@ void drm_atomic_helper_plane_destroy_state(struct drm_plane *plane, void __drm_atomic_helper_connector_state_reset(struct drm_connector_state *conn_state, struct drm_connector *connector); void __drm_atomic_helper_connector_reset(struct drm_connector *connector, struct drm_connector_state *conn_state); void drm_atomic_helper_connector_reset(struct drm_connector *connector); +void __drm_atomic_helper_connector_hdmi_reset(struct drm_connector *connector, + struct drm_connector_state *new_conn_state); void drm_atomic_helper_connector_tv_reset(struct drm_connector *connector); +int drm_atomic_helper_connector_hdmi_check(struct drm_connector *connector, + struct drm_atomic_state *state); int drm_atomic_helper_connector_tv_check(struct drm_connector *connector, struct drm_atomic_state *state); void drm_atomic_helper_connector_tv_margins_reset(struct drm_connector *connector); void __drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector, diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index 4491c4c2fb6e..000a2a156619 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -1029,10 +1029,17 @@ struct drm_connector_state { /** * @hdr_output_metadata: * 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; }; /** * struct drm_connector_funcs - control connectors on a given device * -- 2.44.0