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Mon, 16 Dec 2024 16:40:45 -0800 (PST) From: Dmitry Baryshkov Date: Tue, 17 Dec 2024 02:40:29 +0200 Subject: [PATCH v7 07/10] drm/bridge_connector: hook drm_atomic_helper_connector_hdmi_hotplug() Precedence: bulk X-Mailing-List: linux-samsung-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241217-drm-bridge-hdmi-connector-v7-7-cb9df2b6a515@linaro.org> References: <20241217-drm-bridge-hdmi-connector-v7-0-cb9df2b6a515@linaro.org> In-Reply-To: <20241217-drm-bridge-hdmi-connector-v7-0-cb9df2b6a515@linaro.org> To: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Jaroslav Kysela , Takashi Iwai , Liam Girdwood , Mark Brown , Phong LE , Inki Dae , Seung-Woo Kim , Kyungmin Park , Krzysztof Kozlowski , Alim Akhtar , Russell King , Chun-Kuang Hu , Philipp Zabel , Matthias Brugger , AngeloGioacchino Del Regno , Sandy Huang , =?utf-8?q?Heiko_St=C3=BCbner?= , Andy Yan , Alain Volmat , Raphael Gallais-Pou , Dave Stevenson , =?utf-8?q?Ma=C3=ADra_Cana?= =?utf-8?q?l?= , Raspberry Pi Kernel Maintenance Cc: Jani Nikula , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-sound@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-rockchip@lists.infradead.org X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=4204; i=dmitry.baryshkov@linaro.org; h=from:subject:message-id; bh=pAvR5YZJCNBmhdGZoqKZfJpmIHLV5ppYUTPIUoiUc9U=; b=owEBbQGS/pANAwAKAYs8ij4CKSjVAcsmYgBnYMh5ja5pCrotWtSWn+8ziDDwUoBX/oLBj0chS dbg/ZRFEfaJATMEAAEKAB0WIQRMcISVXLJjVvC4lX+LPIo+Aiko1QUCZ2DIeQAKCRCLPIo+Aiko 1Qq2B/0VnneaHJMvRwVb6YfJDzbyhliurPCaV/7H2ECjfBfZWIQuk0ftoOjwQ7d1PkhHnMUFXDK PmRMZ1NGkdME6oKsNuQMEwkmbCcy7AAfAGKBD+xa1xscEqY2pRGjlEy/h7QYT7d9OaCe23peZb2 uGnH9NHBgiuSLQZt7gTSqFHQMPhbO5wJ5O8KCXfVAqD6h4aePy8j9TZU8W6nP9qlnyG6WMGcEEW HaVKeKuY3bjcRA/2ADaF6YAUjAsz/s/4i8S8LfTLfJwk1IUwsEnYSuI3R1ZWc8Ig8My7GZiHTfL LdoDZoLu/0eJ4k2FMRY/9Gv3Hw0M5jkk0fMkbYEf3v6whYxA X-Developer-Key: i=dmitry.baryshkov@linaro.org; a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A Extend drm_bridge_connector code to read the EDID and use it to update connector status if the bridge chain implements HDMI bridge. Performing it from the generic location minimizes individual bridge's code and enforces standard behaviour from all corresponding drivers. Signed-off-by: Dmitry Baryshkov Reviewed-by: Maxime Ripard --- drivers/gpu/drm/display/drm_bridge_connector.c | 39 ++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) diff --git a/drivers/gpu/drm/display/drm_bridge_connector.c b/drivers/gpu/drm/display/drm_bridge_connector.c index be46d2e7cb5cec262ca5dd6f42f8f31b0187a0f7..4bc044e73fbd8c9fa32ea11f54f268acf024f55f 100644 --- a/drivers/gpu/drm/display/drm_bridge_connector.c +++ b/drivers/gpu/drm/display/drm_bridge_connector.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include #include @@ -180,11 +181,15 @@ drm_bridge_connector_detect(struct drm_connector *connector, bool force) struct drm_bridge_connector *bridge_connector = to_drm_bridge_connector(connector); struct drm_bridge *detect = bridge_connector->bridge_detect; + struct drm_bridge *hdmi = bridge_connector->bridge_hdmi; enum drm_connector_status status; if (detect) { status = detect->funcs->detect(detect); + if (hdmi) + drm_atomic_helper_connector_hdmi_hotplug(connector, status); + drm_bridge_connector_hpd_notify(connector, status); } else { switch (connector->connector_type) { @@ -203,6 +208,16 @@ drm_bridge_connector_detect(struct drm_connector *connector, bool force) return status; } +static void drm_bridge_connector_force(struct drm_connector *connector) +{ + struct drm_bridge_connector *bridge_connector = + to_drm_bridge_connector(connector); + struct drm_bridge *hdmi = bridge_connector->bridge_hdmi; + + if (hdmi) + drm_atomic_helper_connector_hdmi_force(connector); +} + static void drm_bridge_connector_debugfs_init(struct drm_connector *connector, struct dentry *root) { @@ -231,6 +246,7 @@ static void drm_bridge_connector_reset(struct drm_connector *connector) static const struct drm_connector_funcs drm_bridge_connector_funcs = { .reset = drm_bridge_connector_reset, .detect = drm_bridge_connector_detect, + .force = drm_bridge_connector_force, .fill_modes = drm_helper_probe_single_connector_modes, .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, @@ -276,6 +292,14 @@ static int drm_bridge_connector_get_modes(struct drm_connector *connector) to_drm_bridge_connector(connector); struct drm_bridge *bridge; + /* + * If there is a HDMI bridge, EDID has been updated as a part of + * the .detect(). Just update the modes here. + */ + bridge = bridge_connector->bridge_hdmi; + if (bridge) + return drm_edid_connector_add_modes(connector); + /* * If display exposes EDID, then we parse that in the normal way to * build table of supported modes. @@ -368,10 +392,25 @@ static int drm_bridge_connector_write_infoframe(struct drm_connector *connector, return bridge->funcs->hdmi_write_infoframe(bridge, type, buffer, len); } +static const struct drm_edid * +drm_bridge_connector_read_edid(struct drm_connector *connector) +{ + struct drm_bridge_connector *bridge_connector = + to_drm_bridge_connector(connector); + struct drm_bridge *bridge; + + bridge = bridge_connector->bridge_edid; + if (!bridge) + return NULL; + + return drm_bridge_edid_read(bridge, connector); +} + static const struct drm_connector_hdmi_funcs drm_bridge_connector_hdmi_funcs = { .tmds_char_rate_valid = drm_bridge_connector_tmds_char_rate_valid, .clear_infoframe = drm_bridge_connector_clear_infoframe, .write_infoframe = drm_bridge_connector_write_infoframe, + .read_edid = drm_bridge_connector_read_edid, }; static int drm_bridge_connector_audio_startup(struct drm_connector *connector)