From patchwork Sat Nov 9 12:48:29 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Baryshkov X-Patchwork-Id: 842292 Received: from mail-lf1-f51.google.com (mail-lf1-f51.google.com [209.85.167.51]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A6312197A8F for ; Sat, 9 Nov 2024 12:48:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.51 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731156524; cv=none; b=BKOUXf0GCuwvGtjh7W60zcekQ+nF698TskW+HARLuDg55YY8tWGFoarwCV22fpwepY6ZNDCiBrTZ5qGYqZ8vpHW8tEOzxhDoy4zzTb0NjwukvnWmtU+Gv10dSpBIUqTR5t5+vMfRO0s+5M3Wktj05XCGmosbMu4Sh0JAwnAg44g= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731156524; c=relaxed/simple; bh=U2tGaht2UtIOBSpeGeyquWKg2qOH/wq+COPSndCVO/g=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=hVIKRq513Z6kwkcb43z34LmrhexjYdUdCHR4t6X0RS37/++3aYDX0xj0SQhAUFDtuIqAYMdQtboveu5v9nggp1hl6elM34qU0KH1sqUB2AWIx7s4b8ARz1kAaOuJvfZnmfz9Ne90xqkbD2fh/TN4GpPaM6E9BROVA0v7IS2I/sM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org; spf=pass smtp.mailfrom=linaro.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b=Jx6foc2E; arc=none smtp.client-ip=209.85.167.51 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linaro.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="Jx6foc2E" Received: by mail-lf1-f51.google.com with SMTP id 2adb3069b0e04-539f53973fdso2988104e87.1 for ; Sat, 09 Nov 2024 04:48:42 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1731156521; x=1731761321; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=+eyAoYfVD4GTFwuNLHegrvutJuWKGGHJN3n7yLsHG1I=; b=Jx6foc2ExD4GUPMXqjPwXUWjNP2DwLrG3q9JgZKvbeJ0CkfhR5WpVvDMBc6Iw7aOKB 954pe7QGdzvzBaTulG5a24yKkf6E1621yH3GzWrpi8CPLd01d5L8JqEK594CMCQrCfvn SM8H6ycdiXwkDtB2q7PHfw4/y1rd4OOp9zlc40bWw14XxGgW/XS6b5M749rTJx2ZACWt kfTNrHtNPPnhXvPvw3BgrcYxElhqhnpzwwid/epGdcYzya7U40+PeWRtjGOREz6ApWm/ ZhxEMxF7TXfFruAMGgrhzmjSVmJ1cgPd95jk3RRNJcFmSVAR33nQnY6qzLDsmMpp7eH3 9D4Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1731156521; x=1731761321; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=+eyAoYfVD4GTFwuNLHegrvutJuWKGGHJN3n7yLsHG1I=; b=aripIYS8UDqUFtWuej8PYdUJeS23sod2hH2zO6BFgKyNN56nho8gTIg7lwVx/Vk4c9 B9wgqsaOIS0hTPDub1h89JFaxjk1BOgR8RgvuN9IMv/FS4WMAbqHxW6Yv8RxxLThx7Sb 3UB8M/pDEf/J4n8g7kshI/ehQ5hlkQkdizNtZvOUaGjUlMBVVwZI8KTMx/+lJLk/oc+p xrU8pfnIjZ2SNHymUUT8TI7gR69PupZ/B6z4gTIzSSQOkA1mRBPHkNhfeOe4Lh/QsEJ3 xow71wY6Tkyk48h5q6OHAoUBGof64iJqWRHqdfVJ/L8U6waTuSr4FT6zOc4zuY04tCOt Fw0Q== X-Forwarded-Encrypted: i=1; AJvYcCXnJ5IxO3sj2F84ogKsbE/rRWU5DjOtsW3obzvaNCSFu8nZ4usVv2TK/TrXuIrV0/LQqT9mA0/fvlkYz+RibWpODg==@vger.kernel.org X-Gm-Message-State: AOJu0YysNzaXDqOAgUxDMCi1qk9cLulZNG11aI/xot1wD1/zvDOqQuMC eL62l1noLOuTmJtKxTeZ5KWwwxg7r0xWeaYPlhPIDJpj+S/I3qUSFaWCqU3z2KE= X-Google-Smtp-Source: AGHT+IHXuvwEEQF9W5/rviH6M34eZy76pTDi9HbPRF2bHzFyEHu2uqPeHq777qwg3qFX+dUCOCeoTA== X-Received: by 2002:a05:6512:1304:b0:539:e5d7:d7ff with SMTP id 2adb3069b0e04-53d866cb27dmr2111852e87.11.1731156520651; Sat, 09 Nov 2024 04:48:40 -0800 (PST) Received: from umbar.lan ([192.130.178.90]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-53d826a9b76sm929967e87.172.2024.11.09.04.48.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 09 Nov 2024 04:48:39 -0800 (PST) From: Dmitry Baryshkov Date: Sat, 09 Nov 2024 14:48:29 +0200 Subject: [PATCH v3 3/7] drm/connector: implement generic HDMI codec helpers Precedence: bulk X-Mailing-List: linux-samsung-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241109-drm-bridge-hdmi-connector-v3-3-c15afdca5884@linaro.org> References: <20241109-drm-bridge-hdmi-connector-v3-0-c15afdca5884@linaro.org> In-Reply-To: <20241109-drm-bridge-hdmi-connector-v3-0-c15afdca5884@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 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=12999; i=dmitry.baryshkov@linaro.org; h=from:subject:message-id; bh=U2tGaht2UtIOBSpeGeyquWKg2qOH/wq+COPSndCVO/g=; b=owEBbQGS/pANAwAKAYs8ij4CKSjVAcsmYgBnL1odAXOX0mAz8Svlq27tS+7gJG5FpmiVtXSpc tdjW0YzH5OJATMEAAEKAB0WIQRMcISVXLJjVvC4lX+LPIo+Aiko1QUCZy9aHQAKCRCLPIo+Aiko 1ZRlB/9cXgR68Ef3l+W5ZdjE31pub/g3UK639EhmSVoUBaOnjTkkvYrN5kNuOrqu8oHGBo+k/Xl myP2RNVsdLm0bu2/+i0AnIomZ7VwOmUN1FKPnjz49h3M1lQW7VS9Qp7Dl2hwmIbO1pi74zH6QdP iKHGNa/A1TF5k0wHZyA+n3S28KHF0TN6OqRRjWtiP2pjw0k2m6iCuktd8fFpDj90ZHb0aehKoV+ SxKYu7XZQD74td80/DFHp1fydVzf1xqVHxkX5yzWASCMUzrkxUAHVzQF+6zUUEuLouhltT1+tiW /6ks/+YOQqA3hf6kt96cII6cJaBV06TSOofJZJpqib1nQNTB X-Developer-Key: i=dmitry.baryshkov@linaro.org; a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A Several DRM drivers implement HDMI codec support (despite its name it applies to both HDMI and DisplayPort drivers). Implement generic framework to be used by these drivers. This removes a requirement to implement get_eld() callback and provides default implementation for codec's plug handling. The framework is integrated with the DRM HDMI Connector framework, but can be used by DisplayPort drivers. Signed-off-by: Dmitry Baryshkov --- drivers/gpu/drm/Makefile | 1 + drivers/gpu/drm/drm_connector.c | 10 ++ drivers/gpu/drm/drm_connector_hdmi_codec.c | 186 +++++++++++++++++++++++++++++ drivers/gpu/drm/drm_internal.h | 5 + include/drm/drm_connector.h | 80 +++++++++++++ 5 files changed, 282 insertions(+) diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile index 463afad1b5ca6275e61223adc8ca036c3d4d6b03..ab5b052ad5229229ac46e3804be77dd1d1680f58 100644 --- a/drivers/gpu/drm/Makefile +++ b/drivers/gpu/drm/Makefile @@ -42,6 +42,7 @@ drm-y := \ drm_cache.o \ drm_color_mgmt.o \ drm_connector.o \ + drm_connector_hdmi_codec.o \ drm_crtc.o \ drm_displayid.o \ drm_drv.o \ diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c index fc35f47e2849ed6786d6223ac9c69e1c359fc648..1a155a9fb401f687e5a88e72faca1e81d944b6d2 100644 --- a/drivers/gpu/drm/drm_connector.c +++ b/drivers/gpu/drm/drm_connector.c @@ -279,6 +279,7 @@ static int __drm_connector_init(struct drm_device *dev, mutex_init(&connector->mutex); mutex_init(&connector->edid_override_mutex); mutex_init(&connector->hdmi.infoframes.lock); + mutex_init(&connector->hdmi_codec.lock); connector->edid_blob_ptr = NULL; connector->epoch_counter = 0; connector->tile_blob_ptr = NULL; @@ -533,6 +534,12 @@ int drmm_connector_hdmi_init(struct drm_device *dev, connector->hdmi.funcs = hdmi_funcs; + if (connector->hdmi_codec.i2s || connector->hdmi_codec.spdif) { + ret = drm_connector_hdmi_codec_init(connector); + if (ret) + return ret; + } + return 0; } EXPORT_SYMBOL(drmm_connector_hdmi_init); @@ -631,6 +638,8 @@ void drm_connector_cleanup(struct drm_connector *connector) DRM_CONNECTOR_REGISTERED)) drm_connector_unregister(connector); + drm_connector_hdmi_codec_cleanup(connector); + if (connector->privacy_screen) { drm_privacy_screen_put(connector->privacy_screen); connector->privacy_screen = NULL; @@ -669,6 +678,7 @@ 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.infoframes.lock); mutex_destroy(&connector->mutex); diff --git a/drivers/gpu/drm/drm_connector_hdmi_codec.c b/drivers/gpu/drm/drm_connector_hdmi_codec.c new file mode 100644 index 0000000000000000000000000000000000000000..e362852c186109644e9033eb8eaf63b864166d5a --- /dev/null +++ b/drivers/gpu/drm/drm_connector_hdmi_codec.c @@ -0,0 +1,186 @@ +// SPDX-License-Identifier: MIT +/* + * Copyright (c) 2024 Linaro Ltd + */ + +#include +#include +#include + +#include +#include + +#include + +#include "drm_internal.h" + +static int drm_connector_hdmi_codec_audio_startup(struct device *dev, void *data) +{ + struct drm_connector *connector = data; + const struct drm_connector_hdmi_codec_funcs *funcs = + connector->hdmi.funcs->codec_funcs; + + if (funcs->audio_startup) + return funcs->audio_startup(connector); + + return 0; +} + +static int drm_connector_hdmi_codec_prepare(struct device *dev, void *data, + struct hdmi_codec_daifmt *fmt, + struct hdmi_codec_params *hparms) +{ + struct drm_connector *connector = data; + const struct drm_connector_hdmi_codec_funcs *funcs = + connector->hdmi.funcs->codec_funcs; + + return funcs->prepare(connector, fmt, hparms); +} + +static void drm_connector_hdmi_codec_audio_shutdown(struct device *dev, void *data) +{ + struct drm_connector *connector = data; + const struct drm_connector_hdmi_codec_funcs *funcs = + connector->hdmi.funcs->codec_funcs; + + return funcs->audio_shutdown(connector); +} + +static int drm_connector_hdmi_codec_mute_stream(struct device *dev, void *data, + bool enable, int direction) +{ + struct drm_connector *connector = data; + const struct drm_connector_hdmi_codec_funcs *funcs = + connector->hdmi.funcs->codec_funcs; + + if (funcs->mute_stream) + return funcs->mute_stream(connector, enable, direction); + + return -ENOTSUPP; +} + +static int drm_connector_hdmi_codec_get_dai_id(struct snd_soc_component *comment, + struct device_node *endpoint, + void *data) +{ + struct drm_connector *connector = data; + struct of_endpoint of_ep; + int ret; + + if (connector->hdmi_codec.sound_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.sound_dai_port) + return 0; + + return -EINVAL; +} + +static int drm_connector_hdmi_codec_get_eld(struct device *dev, void *data, + uint8_t *buf, size_t len) +{ + struct drm_connector *connector = data; + + // FIXME: locking against drm_edid_to_eld ? + memcpy(buf, connector->eld, min(sizeof(connector->eld), len)); + + return 0; +} + +static int drm_connector_hdmi_codec_hook_plugged_cb(struct device *dev, + void *data, + hdmi_codec_plugged_cb fn, + struct device *codec_dev) +{ + struct drm_connector *connector = data; + + mutex_lock(&connector->hdmi_codec.lock); + + connector->hdmi_codec.plugged_cb = fn; + connector->hdmi_codec.plugged_cb_dev = codec_dev; + + fn(codec_dev, connector->hdmi_codec.last_state); + + mutex_unlock(&connector->hdmi_codec.lock); + + return 0; +} + +void drm_connector_hdmi_codec_plugged_notify(struct drm_connector *connector, + bool plugged) +{ + mutex_lock(&connector->hdmi_codec.lock); + + connector->hdmi_codec.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); + + mutex_unlock(&connector->hdmi_codec.lock); +} +EXPORT_SYMBOL(drm_connector_hdmi_codec_plugged_notify); + +static const struct hdmi_codec_ops drm_connector_hdmi_codec_ops = { + .audio_startup = drm_connector_hdmi_codec_audio_startup, + .prepare = drm_connector_hdmi_codec_prepare, + .audio_shutdown = drm_connector_hdmi_codec_audio_shutdown, + .mute_stream = drm_connector_hdmi_codec_mute_stream, + .get_eld = drm_connector_hdmi_codec_get_eld, + .get_dai_id = drm_connector_hdmi_codec_get_dai_id, + .hook_plugged_cb = drm_connector_hdmi_codec_hook_plugged_cb, +}; + +/** + * drm_connector_hdmi_codec_cleanup - Cleanup the HDMI Codec for the connector + * @connector: A pointer to the connector to cleanup + * + * Cleanup the HDMI codec device created for the specified connector. + * Can be called even if the codec wasn't allocated. + */ +void drm_connector_hdmi_codec_cleanup(struct drm_connector *connector) +{ + platform_device_unregister(connector->hdmi_codec.codec_pdev); +} + +/** + * drm_connector_hdmi_codec_init - Initialize HDMI Codec device for the DRM connector + * @connector: A pointer to the connector to allocate codec for + * + * Create a HDMI codec device to be used with the specified connector. + * + * Returns: + * Zero on success, error code on failure. + */ +int drm_connector_hdmi_codec_init(struct drm_connector *connector) +{ + struct hdmi_codec_pdata codec_pdata = {}; + struct platform_device *pdev; + + if (!connector->hdmi.funcs->codec_funcs->prepare || + !connector->hdmi.funcs->codec_funcs->audio_shutdown || + !connector->hdmi_codec.dev) + return -EINVAL; + + codec_pdata.ops = &drm_connector_hdmi_codec_ops; + codec_pdata.i2s = connector->hdmi_codec.i2s, + codec_pdata.spdif = connector->hdmi_codec.spdif, + codec_pdata.max_i2s_channels = connector->hdmi_codec.max_i2s_channels, + codec_pdata.data = connector; + + pdev = platform_device_register_data(connector->hdmi_codec.dev, + HDMI_CODEC_DRV_NAME, + PLATFORM_DEVID_AUTO, + &codec_pdata, sizeof(codec_pdata)); + if (IS_ERR(pdev)) + return PTR_ERR(pdev); + + connector->hdmi_codec.codec_pdev = pdev; + + return 0; +} diff --git a/drivers/gpu/drm/drm_internal.h b/drivers/gpu/drm/drm_internal.h index b2b6a8e49dda46f1cb3b048ef7b28356dd3aaa4e..8ed58e482fac4662b659276e8bc17690e1fdb9b7 100644 --- a/drivers/gpu/drm/drm_internal.h +++ b/drivers/gpu/drm/drm_internal.h @@ -280,4 +280,9 @@ void drm_framebuffer_print_info(struct drm_printer *p, unsigned int indent, const struct drm_framebuffer *fb); void drm_framebuffer_debugfs_init(struct drm_device *dev); +/* drm_connector_hdmi_codec.c */ + +int drm_connector_hdmi_codec_init(struct drm_connector *connector); +void drm_connector_hdmi_codec_cleanup(struct drm_connector *connector); + #endif /* __DRM_INTERNAL_H__ */ diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index e3fa43291f449d70f3b92a00985336c4f2237bc6..b89f791cfa2be86ce1c5aa124c0f071d7c8a6489 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -46,6 +46,8 @@ struct drm_property_blob; struct drm_printer; struct drm_privacy_screen; struct edid; +struct hdmi_codec_daifmt; +struct hdmi_codec_params; struct i2c_adapter; enum drm_connector_force { @@ -1141,6 +1143,52 @@ struct drm_connector_state { struct drm_connector_hdmi_state hdmi; }; +struct drm_connector_hdmi_codec_funcs { + /** + * @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 (*audio_startup)(struct drm_connector *connector); + + /** + * @prepare: + * Configures HDMI-encoder for audio stream. Can be called + * multiple times for each setup. Mandatory. + * + * Returns: + * 0 on success, a negative error code otherwise + */ + int (*prepare)(struct drm_connector *connector, + struct hdmi_codec_daifmt *fmt, + struct hdmi_codec_params *hparms); + /** + * @audio_shutdown: + * + * Shut down the audio stream. Mandatory. + * + * Returns: + * 0 on success, a negative error code otherwise + */ + void (*audio_shutdown)(struct drm_connector *connector); + + /** + * @mute_stream: + * + * Mute/unmute HDMI audio stream. The @mute_stream callback is + * optional. + * + * Returns: + * 0 on success, a negative error code otherwise + */ + int (*mute_stream)(struct drm_connector *connector, + bool enable, int direction); +}; + /** * struct drm_connector_hdmi_funcs - drm_hdmi_connector control functions */ @@ -1198,6 +1246,14 @@ struct drm_connector_hdmi_funcs { int (*write_infoframe)(struct drm_connector *connector, enum hdmi_infoframe_type type, const u8 *buffer, size_t len); + + /** + * @codec_funcs: + * + * Implementation of the HDMI codec functionality to be used by the DRM + * HDMI Codec framework. + */ + const struct drm_connector_hdmi_codec_funcs *codec_funcs; }; /** @@ -1660,6 +1716,22 @@ struct drm_cmdline_mode { bool tv_mode_specified; }; +struct drm_connector_hdmi_codec { + struct platform_device *codec_pdev; + struct device *dev; + + struct mutex lock; /* protects last_state and plugged_cb */ + void (*plugged_cb)(struct device *dev, bool plugged); + struct device *plugged_cb_dev; + bool last_state; + + int max_i2s_channels; + uint i2s: 1; + uint spdif: 1; + + int sound_dai_port; +}; + /* * struct drm_connector_hdmi - DRM Connector HDMI-related structure */ @@ -2118,6 +2190,11 @@ struct drm_connector { * @hdmi: HDMI-related variable and properties. */ struct drm_connector_hdmi hdmi; + + /** + * @hdmi_codec: HDMI codec properties and non-DRM state. + */ + struct drm_connector_hdmi_codec hdmi_codec; }; #define obj_to_connector(x) container_of(x, struct drm_connector, base) @@ -2151,6 +2228,9 @@ void drm_connector_unregister(struct drm_connector *connector); int drm_connector_attach_encoder(struct drm_connector *connector, struct drm_encoder *encoder); +void drm_connector_hdmi_codec_plugged_notify(struct drm_connector *connector, + bool plugged); + void drm_connector_cleanup(struct drm_connector *connector); static inline unsigned int drm_connector_index(const struct drm_connector *connector)