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Tue, 24 Dec 2024 15:10:30 -0800 (PST) From: Dmitry Baryshkov Date: Wed, 25 Dec 2024 01:10:14 +0200 Subject: [PATCH RFC/RFT 6/9] drm/display: bridge-connector: hook in CEC notifier support Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20241225-drm-hdmi-connector-cec-v1-6-b80380c67221@linaro.org> References: <20241225-drm-hdmi-connector-cec-v1-0-b80380c67221@linaro.org> In-Reply-To: <20241225-drm-hdmi-connector-cec-v1-0-b80380c67221@linaro.org> To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Dave Stevenson , =?utf-8?q?Ma=C3=ADra_Canal?= , Raspberry Pi Kernel Maintenance , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=4084; i=dmitry.baryshkov@linaro.org; h=from:subject:message-id; bh=90ejgcy/tGTeJU3XG+cQM6w/AiRHbpg85t5Qz6ihKHQ=; b=owEBbQGS/pANAwAKAYs8ij4CKSjVAcsmYgBnaz9W9t2brPmk3nz0O8zZEEUvpaYxz558zo7IB EI4VTfwLoqJATMEAAEKAB0WIQRMcISVXLJjVvC4lX+LPIo+Aiko1QUCZ2s/VgAKCRCLPIo+Aiko 1XR3B/93XfwazjnkzjUluIQWuNP9h20/xSLWiT2KkQvFMkqFAKZl7sZlhjifLwUl2MZmr5AEEL3 L8tbeBq8BCfg4VBQpUQAAuRudKXxW1tR+i1CMUTLwXsBOa7//5ROpwTD/mCRf08JdN41ldhQ3O7 m1WEVTps/Hq4l/NCD3dScYOHgWk9+yL0RJ7EaWWeO3wJhAmuDehNEcHjiP0Iy5DpyxNeSRrNzFd +P09EG4eTy9xsaQyPJrylcXpYrTrebv+3xReXzQBvNUv+KA0lZkLbh/PSjUYzXncj3UR5mXuN70 dU3h/5S0IE0oGZcH8i2ZzjLG8kOlyzsk1rZM8/lugPxohmXz X-Developer-Key: i=dmitry.baryshkov@linaro.org; a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A Allow HDMI DRM bridges to create CEC notifier. Physical address is handled automatically by drm_atomic_helper_connector_hdmi_hotplug() being called from .detect() path. Signed-off-by: Dmitry Baryshkov --- drivers/gpu/drm/bridge/lontium-lt9611.c | 2 +- drivers/gpu/drm/display/Kconfig | 1 + drivers/gpu/drm/display/drm_bridge_connector.c | 11 ++++++++++- include/drm/drm_bridge.h | 9 +++++++-- 4 files changed, 19 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/bridge/lontium-lt9611.c b/drivers/gpu/drm/brid= ge/lontium-lt9611.c index e650cd83fc8d880012edb8a85c69b2f1d378f64c..41156aee5d9f1ecd7bd3f0aeb86= 6487325063c11 100644 --- a/drivers/gpu/drm/bridge/lontium-lt9611.c +++ b/drivers/gpu/drm/bridge/lontium-lt9611.c @@ -1138,7 +1138,7 @@ static int lt9611_probe(struct i2c_client *client) lt9611->bridge.type =3D DRM_MODE_CONNECTOR_HDMIA; lt9611->bridge.vendor =3D "Lontium"; lt9611->bridge.product =3D "LT9611"; - lt9611->bridge.hdmi_audio_dev =3D dev; + lt9611->bridge.hdmi_dev =3D dev; lt9611->bridge.hdmi_audio_max_i2s_playback_channels =3D 8; lt9611->bridge.hdmi_audio_dai_port =3D 2; =20 diff --git a/drivers/gpu/drm/display/Kconfig b/drivers/gpu/drm/display/Kcon= fig index 49da9b768acf3e5f84f2cefae4bb042cfd57a50c..d35d945a3811c30247a9f3e282a= 16c9eedd0d4e9 100644 --- a/drivers/gpu/drm/display/Kconfig +++ b/drivers/gpu/drm/display/Kconfig @@ -16,6 +16,7 @@ if DRM_DISPLAY_HELPER config DRM_BRIDGE_CONNECTOR bool select DRM_DISPLAY_HDMI_AUDIO_HELPER + select DRM_DISPLAY_HDMI_CEC_HELPER select DRM_DISPLAY_HDMI_STATE_HELPER help DRM connector implementation terminating DRM bridge chains. diff --git a/drivers/gpu/drm/display/drm_bridge_connector.c b/drivers/gpu/d= rm/display/drm_bridge_connector.c index e53f01681b795c41879167d066d382952bf50bce..291abb4bcfefd12e1a57a22ba5c= cce21c15196a4 100644 --- a/drivers/gpu/drm/display/drm_bridge_connector.c +++ b/drivers/gpu/drm/display/drm_bridge_connector.c @@ -20,6 +20,7 @@ #include #include #include +#include #include #include =20 @@ -616,7 +617,7 @@ struct drm_connector *drm_bridge_connector_init(struct = drm_device *drm, return ERR_PTR(-EINVAL); =20 ret =3D drm_connector_hdmi_audio_init(connector, - bridge->hdmi_audio_dev, + bridge->hdmi_dev, &drm_bridge_connector_hdmi_audio_funcs, bridge->hdmi_audio_max_i2s_playback_channels, bridge->hdmi_audio_spdif_playback, @@ -624,6 +625,14 @@ struct drm_connector *drm_bridge_connector_init(struct= drm_device *drm, if (ret) return ERR_PTR(ret); } + + if (bridge->hdmi_cec_notifier) { + ret =3D drm_connector_hdmi_cec_notifier_register(connector, + NULL, + bridge->hdmi_dev); + if (ret) + return ERR_PTR(ret); + } } else { ret =3D drmm_connector_init(drm, connector, &drm_bridge_connector_funcs, diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h index 4b84faf14e368310dd20aa964e8178ec80aa6fa7..1f1670e3c6aac39b8b891b0d5e7= e91254eb0d3a1 100644 --- a/include/drm/drm_bridge.h +++ b/include/drm/drm_bridge.h @@ -914,9 +914,9 @@ struct drm_bridge { unsigned int max_bpc; =20 /** - * @hdmi_audio_dev: device to be used as a parent for the HDMI Codec + * @hdmi_dev: device to be used as a parent for the HDMI Codec */ - struct device *hdmi_audio_dev; + struct device *hdmi_dev; =20 /** * @hdmi_audio_max_i2s_playback_channels: maximum number of playback @@ -933,6 +933,11 @@ struct drm_bridge { * @hdmi_audio_dai_port: sound DAI port, -1 if it is not enabled */ int hdmi_audio_dai_port; + + /** + * @hdmi_cec_notifier: use this bridge to register a CEC notifier + */ + bool hdmi_cec_notifier; }; =20 static inline struct drm_bridge * --=20 2.39.5