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Fri, 20 Dec 2024 11:17:15 -0800 (PST) Received: from umbar.lan ([192.130.178.90]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-54223813877sm545141e87.149.2024.12.20.11.17.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 20 Dec 2024 11:17:13 -0800 (PST) From: Dmitry Baryshkov Date: Fri, 20 Dec 2024 21:17:01 +0200 Subject: [PATCH v8 04/10] drm/bridge: connector: add support for HDMI codec framework MIME-Version: 1.0 Message-Id: <20241220-drm-bridge-hdmi-connector-v8-4-2399dbae2990@linaro.org> References: <20241220-drm-bridge-hdmi-connector-v8-0-2399dbae2990@linaro.org> In-Reply-To: <20241220-drm-bridge-hdmi-connector-v8-0-2399dbae2990@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=14276; i=dmitry.baryshkov@linaro.org; h=from:subject:message-id; bh=KtVCj/xUBLV4wZJzUKolmw1QEEcWzPfuViJ5cG4UZ3s=; b=owEBbQGS/pANAwAKAYs8ij4CKSjVAcsmYgBnZcKu98OOevwn0M++CUbJ90TaRO9MZxkYUxfCx yjKLf03TRKJATMEAAEKAB0WIQRMcISVXLJjVvC4lX+LPIo+Aiko1QUCZ2XCrgAKCRCLPIo+Aiko 1WDSB/9BGErgKzD0fWlv4O1bVexuHICGUzpzDN/TWrl1HdUIoP+qvwIm3PCWrgEmeyMYcv1KuSw 1GG8zNQShuBHW0ZMHjHCy4CW0JLFOnI4EagKLPpXQWn3BhuFrmeucCrrhrHs0jjOLsm8nbm1ec8 w09PHzlCU8ZpbZ8SWdFquDz8WvuLNd3Lf12jqVy+ddCfctoyV4weCmlSs429o91kkoLFZJ+Uw8/ o8+b3xi/MLGf1e6MRKbqBw3497WfEWP9+NwTWzvw6ai7HI+KYVIQNyvPr+oIxGB7vGgIgukKYIo B+aHvRxq4Jbv3/T6Q9kcUF3z9QZBxyxvEJVgP0f6SA3c3CNb X-Developer-Key: i=dmitry.baryshkov@linaro.org; a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Add necessary glue code to be able to use new HDMI codec framework from the DRM bridge drivers. The drm_bridge implements a limited set of the hdmi_codec_ops interface, with the functions accepting both drm_connector and drm_bridge instead of just a generic void pointer. This framework is integrated with the DRM HDMI Connector framework, but can also be used for DisplayPort connectors. Reviewed-by: Maxime Ripard Tested-by: Dave Stevenson Signed-off-by: Dmitry Baryshkov --- drivers/gpu/drm/display/drm_bridge_connector.c | 98 ++++++++++++++++++++++++-- drivers/gpu/drm/drm_connector.c | 6 +- drivers/gpu/drm/drm_connector_hdmi_audio.c | 42 +++++------ include/drm/drm_bridge.h | 74 +++++++++++++++++++ include/drm/drm_connector.h | 2 +- 5 files changed, 193 insertions(+), 29 deletions(-) diff --git a/drivers/gpu/drm/display/drm_bridge_connector.c b/drivers/gpu/drm/display/drm_bridge_connector.c index 512ced87ea18c74e182a558a686ddd83de891814..cc955ee008d843d73fedb891e97143a4168fd311 100644 --- a/drivers/gpu/drm/display/drm_bridge_connector.c +++ b/drivers/gpu/drm/display/drm_bridge_connector.c @@ -374,6 +374,75 @@ static const struct drm_connector_hdmi_funcs drm_bridge_connector_hdmi_funcs = { .write_infoframe = drm_bridge_connector_write_infoframe, }; +static int drm_bridge_connector_audio_startup(struct drm_connector *connector) +{ + struct drm_bridge_connector *bridge_connector = + to_drm_bridge_connector(connector); + struct drm_bridge *bridge; + + bridge = bridge_connector->bridge_hdmi; + if (!bridge) + return -EINVAL; + + if (!bridge->funcs->hdmi_audio_startup) + return 0; + + return bridge->funcs->hdmi_audio_startup(connector, bridge); +} + +static int drm_bridge_connector_audio_prepare(struct drm_connector *connector, + struct hdmi_codec_daifmt *fmt, + struct hdmi_codec_params *hparms) +{ + struct drm_bridge_connector *bridge_connector = + to_drm_bridge_connector(connector); + struct drm_bridge *bridge; + + bridge = bridge_connector->bridge_hdmi; + if (!bridge) + return -EINVAL; + + return bridge->funcs->hdmi_audio_prepare(connector, bridge, fmt, hparms); +} + +static void drm_bridge_connector_audio_shutdown(struct drm_connector *connector) +{ + struct drm_bridge_connector *bridge_connector = + to_drm_bridge_connector(connector); + struct drm_bridge *bridge; + + bridge = bridge_connector->bridge_hdmi; + if (!bridge) + return; + + bridge->funcs->hdmi_audio_shutdown(connector, bridge); +} + +static int drm_bridge_connector_audio_mute_stream(struct drm_connector *connector, + bool enable, int direction) +{ + struct drm_bridge_connector *bridge_connector = + to_drm_bridge_connector(connector); + struct drm_bridge *bridge; + + bridge = bridge_connector->bridge_hdmi; + if (!bridge) + return -EINVAL; + + if (bridge->funcs->hdmi_audio_mute_stream) + return bridge->funcs->hdmi_audio_mute_stream(connector, bridge, + enable, direction); + else + return -ENOTSUPP; +} + +static const struct drm_connector_hdmi_audio_funcs drm_bridge_connector_hdmi_audio_funcs = { + .startup = drm_bridge_connector_audio_startup, + .prepare = drm_bridge_connector_audio_prepare, + .shutdown = drm_bridge_connector_audio_shutdown, + .mute_stream = drm_bridge_connector_audio_mute_stream, +}; + /* ----------------------------------------------------------------------------- * Bridge Connector Initialisation */ @@ -473,7 +542,9 @@ struct drm_connector *drm_bridge_connector_init(struct drm_device *drm, if (connector_type == DRM_MODE_CONNECTOR_Unknown) return ERR_PTR(-EINVAL); - if (bridge_connector->bridge_hdmi) + if (bridge_connector->bridge_hdmi) { + bridge = bridge_connector->bridge_hdmi; + ret = drmm_connector_hdmi_init(drm, connector, bridge_connector->bridge_hdmi->vendor, bridge_connector->bridge_hdmi->product, @@ -482,12 +553,31 @@ struct drm_connector *drm_bridge_connector_init(struct drm_device *drm, connector_type, ddc, supported_formats, max_bpc); - else + if (ret) + return ERR_PTR(ret); + + if (bridge->hdmi_audio_max_i2s_playback_channels || + bridge->hdmi_audio_spdif_playback) { + if (!bridge->funcs->hdmi_audio_prepare || + !bridge->funcs->hdmi_audio_shutdown) + return ERR_PTR(-EINVAL); + + ret = drm_connector_hdmi_audio_init(connector, + bridge->hdmi_audio_dev, + &drm_bridge_connector_hdmi_audio_funcs, + bridge->hdmi_audio_max_i2s_playback_channels, + bridge->hdmi_audio_spdif_playback, + bridge->hdmi_audio_dai_port); + if (ret) + return ERR_PTR(ret); + } + } else { ret = drmm_connector_init(drm, connector, &drm_bridge_connector_funcs, connector_type, ddc); - if (ret) - return ERR_PTR(ret); + if (ret) + return ERR_PTR(ret); + } drm_connector_helper_add(connector, &drm_bridge_connector_helper_funcs); diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c index 0669e0d9521c9d80efef1296180f23d6b38835b7..1383fa9fff9bcf31488453e209a36c6fe97be2f1 100644 --- a/drivers/gpu/drm/drm_connector.c +++ b/drivers/gpu/drm/drm_connector.c @@ -282,7 +282,7 @@ static int drm_connector_init_only(struct drm_device *dev, mutex_init(&connector->eld_mutex); mutex_init(&connector->edid_override_mutex); mutex_init(&connector->hdmi.infoframes.lock); - mutex_init(&connector->hdmi_codec.lock); + mutex_init(&connector->hdmi_audio.lock); connector->edid_blob_ptr = NULL; connector->epoch_counter = 0; connector->tile_blob_ptr = NULL; @@ -716,7 +716,7 @@ void drm_connector_cleanup(struct drm_connector *connector) DRM_CONNECTOR_REGISTERED)) drm_connector_unregister(connector); - platform_device_unregister(connector->hdmi_codec.codec_pdev); + platform_device_unregister(connector->hdmi_audio.codec_pdev); if (connector->privacy_screen) { drm_privacy_screen_put(connector->privacy_screen); @@ -754,7 +754,7 @@ void drm_connector_cleanup(struct drm_connector *connector) connector->funcs->atomic_destroy_state(connector, connector->state); - mutex_destroy(&connector->hdmi_codec.lock); + mutex_destroy(&connector->hdmi_audio.lock); mutex_destroy(&connector->hdmi.infoframes.lock); mutex_destroy(&connector->mutex); diff --git a/drivers/gpu/drm/drm_connector_hdmi_audio.c b/drivers/gpu/drm/drm_connector_hdmi_audio.c index bd7aab2fdfd3530d1f812ea058f5f6fd9d1c3b27..cda9403e49ec35e9d9c118705934908b3ca925b0 100644 --- a/drivers/gpu/drm/drm_connector_hdmi_audio.c +++ b/drivers/gpu/drm/drm_connector_hdmi_audio.c @@ -16,7 +16,7 @@ static int drm_connector_hdmi_audio_startup(struct device *dev, void *data) { struct drm_connector *connector = data; const struct drm_connector_hdmi_audio_funcs *funcs = - connector->hdmi_codec.funcs; + connector->hdmi_audio.funcs; if (funcs->startup) return funcs->startup(connector); @@ -30,7 +30,7 @@ static int drm_connector_hdmi_audio_prepare(struct device *dev, void *data, { struct drm_connector *connector = data; const struct drm_connector_hdmi_audio_funcs *funcs = - connector->hdmi_codec.funcs; + connector->hdmi_audio.funcs; return funcs->prepare(connector, fmt, hparms); } @@ -39,7 +39,7 @@ static void drm_connector_hdmi_audio_shutdown(struct device *dev, void *data) { struct drm_connector *connector = data; const struct drm_connector_hdmi_audio_funcs *funcs = - connector->hdmi_codec.funcs; + connector->hdmi_audio.funcs; return funcs->shutdown(connector); } @@ -49,7 +49,7 @@ static int drm_connector_hdmi_audio_mute_stream(struct device *dev, void *data, { struct drm_connector *connector = data; const struct drm_connector_hdmi_audio_funcs *funcs = - connector->hdmi_codec.funcs; + connector->hdmi_audio.funcs; if (funcs->mute_stream) return funcs->mute_stream(connector, enable, direction); @@ -65,14 +65,14 @@ static int drm_connector_hdmi_audio_get_dai_id(struct snd_soc_component *comment struct of_endpoint of_ep; int ret; - if (connector->hdmi_codec.dai_port < 0) + if (connector->hdmi_audio.dai_port < 0) return -ENOTSUPP; ret = of_graph_parse_endpoint(endpoint, &of_ep); if (ret < 0) return ret; - if (of_ep.port == connector->hdmi_codec.dai_port) + if (of_ep.port == connector->hdmi_audio.dai_port) return 0; return -EINVAL; @@ -97,14 +97,14 @@ static int drm_connector_hdmi_audio_hook_plugged_cb(struct device *dev, { struct drm_connector *connector = data; - mutex_lock(&connector->hdmi_codec.lock); + mutex_lock(&connector->hdmi_audio.lock); - connector->hdmi_codec.plugged_cb = fn; - connector->hdmi_codec.plugged_cb_dev = codec_dev; + connector->hdmi_audio.plugged_cb = fn; + connector->hdmi_audio.plugged_cb_dev = codec_dev; - fn(codec_dev, connector->hdmi_codec.last_state); + fn(codec_dev, connector->hdmi_audio.last_state); - mutex_unlock(&connector->hdmi_codec.lock); + mutex_unlock(&connector->hdmi_audio.lock); return 0; } @@ -112,16 +112,16 @@ static int drm_connector_hdmi_audio_hook_plugged_cb(struct device *dev, void drm_connector_hdmi_audio_plugged_notify(struct drm_connector *connector, bool plugged) { - mutex_lock(&connector->hdmi_codec.lock); + mutex_lock(&connector->hdmi_audio.lock); - connector->hdmi_codec.last_state = plugged; + connector->hdmi_audio.last_state = plugged; - if (connector->hdmi_codec.plugged_cb && - connector->hdmi_codec.plugged_cb_dev) - connector->hdmi_codec.plugged_cb(connector->hdmi_codec.plugged_cb_dev, - connector->hdmi_codec.last_state); + if (connector->hdmi_audio.plugged_cb && + connector->hdmi_audio.plugged_cb_dev) + connector->hdmi_audio.plugged_cb(connector->hdmi_audio.plugged_cb_dev, + connector->hdmi_audio.last_state); - mutex_unlock(&connector->hdmi_codec.lock); + mutex_unlock(&connector->hdmi_audio.lock); } EXPORT_SYMBOL(drm_connector_hdmi_audio_plugged_notify); @@ -172,8 +172,8 @@ int drm_connector_hdmi_audio_init(struct drm_connector *connector, !funcs->shutdown) return -EINVAL; - connector->hdmi_codec.funcs = funcs; - connector->hdmi_codec.dai_port = dai_port; + connector->hdmi_audio.funcs = funcs; + connector->hdmi_audio.dai_port = dai_port; pdev = platform_device_register_data(hdmi_codec_dev, HDMI_CODEC_DRV_NAME, @@ -182,7 +182,7 @@ int drm_connector_hdmi_audio_init(struct drm_connector *connector, if (IS_ERR(pdev)) return PTR_ERR(pdev); - connector->hdmi_codec.codec_pdev = pdev; + connector->hdmi_audio.codec_pdev = pdev; return 0; } diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h index e8d735b7f6a480468c88287e2517b387ceec0f22..4b84faf14e368310dd20aa964e8178ec80aa6fa7 100644 --- a/include/drm/drm_bridge.h +++ b/include/drm/drm_bridge.h @@ -41,6 +41,8 @@ struct drm_display_info; struct drm_minor; struct drm_panel; struct edid; +struct hdmi_codec_daifmt; +struct hdmi_codec_params; struct i2c_adapter; /** @@ -676,6 +678,57 @@ struct drm_bridge_funcs { enum hdmi_infoframe_type type, const u8 *buffer, size_t len); + /** + * @hdmi_audio_startup: + * + * Called when ASoC starts an audio stream setup. The + * @hdmi_audio_startup() is optional. + * + * Returns: + * 0 on success, a negative error code otherwise + */ + int (*hdmi_audio_startup)(struct drm_connector *connector, + struct drm_bridge *bridge); + + /** + * @prepare: + * Configures HDMI-encoder for audio stream. Can be called multiple + * times for each setup. Mandatory if HDMI audio is enabled in the + * bridge's configuration. + * + * Returns: + * 0 on success, a negative error code otherwise + */ + int (*hdmi_audio_prepare)(struct drm_connector *connector, + struct drm_bridge *bridge, + struct hdmi_codec_daifmt *fmt, + struct hdmi_codec_params *hparms); + + /** + * @hdmi_audio_shutdown: + * + * Shut down the audio stream. Mandatory if HDMI audio is enabled in + * the bridge's configuration. + * + * Returns: + * 0 on success, a negative error code otherwise + */ + void (*hdmi_audio_shutdown)(struct drm_connector *connector, + struct drm_bridge *bridge); + + /** + * @hdmi_audio_mute_stream: + * + * Mute/unmute HDMI audio stream. The @hdmi_audio_mute_stream callback + * is optional. + * + * Returns: + * 0 on success, a negative error code otherwise + */ + int (*hdmi_audio_mute_stream)(struct drm_connector *connector, + struct drm_bridge *bridge, + bool enable, int direction); + /** * @debugfs_init: * @@ -859,6 +912,27 @@ struct drm_bridge { * @DRM_BRIDGE_OP_HDMI is set. */ unsigned int max_bpc; + + /** + * @hdmi_audio_dev: device to be used as a parent for the HDMI Codec + */ + struct device *hdmi_audio_dev; + + /** + * @hdmi_audio_max_i2s_playback_channels: maximum number of playback + * I2S channels for the HDMI codec + */ + int hdmi_audio_max_i2s_playback_channels; + + /** + * @hdmi_audio_spdif_playback: set if HDMI codec has S/PDIF playback port + */ + unsigned int hdmi_audio_spdif_playback : 1; + + /** + * @hdmi_audio_dai_port: sound DAI port, -1 if it is not enabled + */ + int hdmi_audio_dai_port; }; static inline struct drm_bridge * diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index bdd8637196a608319e81fb3aee286ce0fd22cd9c..ecd3dce94ffcfefacdb554efdc00ea19d6c18f24 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -2236,7 +2236,7 @@ struct drm_connector { /** * @hdmi_codec: HDMI codec properties and non-DRM state. */ - struct drm_connector_hdmi_audio hdmi_codec; + struct drm_connector_hdmi_audio hdmi_audio; }; #define obj_to_connector(x) container_of(x, struct drm_connector, base)