From patchwork Fri Dec 20 19:17:00 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Baryshkov X-Patchwork-Id: 13917273 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D5078E7718C for ; Fri, 20 Dec 2024 19:17:16 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2F5D510F034; Fri, 20 Dec 2024 19:17:16 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.b="F1OebI+B"; dkim-atps=neutral Received: from mail-lj1-x22d.google.com (mail-lj1-x22d.google.com [IPv6:2a00:1450:4864:20::22d]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3B0D610F034 for ; Fri, 20 Dec 2024 19:17:14 +0000 (UTC) Received: by mail-lj1-x22d.google.com with SMTP id 38308e7fff4ca-3035046d4bfso19850501fa.0 for ; Fri, 20 Dec 2024 11:17:14 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1734722232; x=1735327032; darn=lists.freedesktop.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=CKoOABPrRZgXfqcXTeN3ithnZW9z7vvoLY1QJGjHJvg=; b=F1OebI+BDIXom/dBWXmsPb2j8r04N+K1SH/bH9E2jt8GPwP7hf/cWIX+YE4J8h9SjC /s+4dAnp7UxwslKWp+Be+CNUJet82oiF8clSlQbYF7aVhxM0cfmny4HFxCwRUjiGnLw/ Q8/1vHWXcVl28NB23dImH6BXAPorW4hS6SP4/9Q0lUePbxi8Oxj1UXsgG+HR0KbV3XdH bzZ7FRkX/gmmtxx/9en3jK2ZZZXHxG+jF6LLmjz08ubKlVrIYdwNllX9QjCPrIalnoMr p9rNbShTTjwEeEYwoXmbcw19+aYFn1INGKD26aasuwucAmcG1epuqo6yGr+u2uutE46t KQcA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1734722232; x=1735327032; 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=CKoOABPrRZgXfqcXTeN3ithnZW9z7vvoLY1QJGjHJvg=; b=MgvywfFIEI/RxDvF2kpABTBhs1zwS54/85KRpN/u0nV9B8oPJ7+n8pjdE9PRmrvLtl sZ23gJ5gfy1fZxLZqr9t8Z4q3KVVPVEOfmbAcBpBGvWQqCmXrtSqQRWXS1cGbT7Am77r plkORihPTk9GtvBC3WwlQ4+32MU5R2/2ozfHXJO6RmOJOeqCcWKdpwG+qxkcuP3K7Tbo uGhrR3Mn4NqmmL07dMNmJl7MpB7BBjAbtFMUY/fBm43RufSAUDr53MXWVXcJxVGx3ghZ LaPkhfv3YWVCEPi33pzYlFRj7QAQINfO2diQk8L4rBYDsOeV1Wk+roQvX8WbuyRsAjSI VAEg== X-Forwarded-Encrypted: i=1; AJvYcCVzwOKd2OvIH/iTXMsmCl8hNFiUr1Gc80WA3CNcrs0qSKcXfQHRhl0YJGsKyKwihq1vv3X8QB048U8=@lists.freedesktop.org X-Gm-Message-State: AOJu0Yz72wtqk497DS9EpaqoimNMKSMCRsVWDkdOmbQ93idQOxOFIMcY 3M6mv/GIOSHSNZ3Td8FaO9mubvAOxX/3YVfehX0DqXZAQ5D31I6x4EjxbNeiohQ= X-Gm-Gg: ASbGncveRdaVVwd9ne9hmg2l8t/EpLia5ncFrfHS5hpUNRDKk2MnrHrbhsq10amsU8P DZ2f8O++WkuHmST/501Dop8g1n6S4opEOKkqd5JIpwO/hlxrLJrwfkyXcwgvFhJy9GqK0X0HDda XOFrYvpmcgPMvvPQBcWHGwBX3Ej1OZEfl2N8KHvaye/jiiPw1JqCwAma/PjM7wT1RrratKLvuHj weigQOjZdaGA+siFRbP7l/4LRC3ZfCoyN4rAs07FH1QXEXseXqdpabd4hBUHzRr X-Google-Smtp-Source: AGHT+IEDKA8IkHov3D89B0qyU7N0Y4iRur8PhTx3pV/7pAtnvYG9YUZQc2LAkxPoFmbyVSQ9ubZmuQ== X-Received: by 2002:a05:6512:3b99:b0:540:5b5b:4289 with SMTP id 2adb3069b0e04-5422959c788mr1378632e87.47.1734722232439; Fri, 20 Dec 2024 11:17:12 -0800 (PST) Received: from umbar.lan ([192.130.178.90]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-54223813877sm545141e87.149.2024.12.20.11.17.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 20 Dec 2024 11:17:11 -0800 (PST) From: Dmitry Baryshkov Date: Fri, 20 Dec 2024 21:17:00 +0200 Subject: [PATCH v8 03/10] drm/connector: implement generic HDMI audio helpers MIME-Version: 1.0 Message-Id: <20241220-drm-bridge-hdmi-connector-v8-3-2399dbae2990@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=13551; i=dmitry.baryshkov@linaro.org; h=from:subject:message-id; bh=E6uxh0yM6oGx82wcAEDQ6+YGYcpdHpIui66Yz4SLPi4=; b=owEBbQGS/pANAwAKAYs8ij4CKSjVAcsmYgBnZcKuq7CtgK3GRNbzXLonjZlbzqizI9r4ianfK wNGssS4pfmJATMEAAEKAB0WIQRMcISVXLJjVvC4lX+LPIo+Aiko1QUCZ2XCrgAKCRCLPIo+Aiko 1fhfB/4keulrDjA8uYDXtBtl0oL1sgzeuBX2TfU1soVzvUcq6JN9vRF+CbbIpcKuDj6QRz4tx7d cen7UAh2Mc9Bv9MqJFjOas34N1d+toi/bj7eqMTRn7rX4iW/zedsQ/yUxrB6iqqa4IeXPSc7dKq ulexXuDXCIXWFvwVKqy/8jWlR6Cd+PqcYQ5ICN2B6om12Ux+2J7uCewW/+5BhdBzbsDjfertVFr UxoTN1xJ5phFuLqX2NXCQTMce3C3U1KFF6LGd7YzT6Yi9ohwqR9G4FawLpKm8HwAfOGvvbBHZn+ JZIwi+SBl6QF2xkh9KUQI5VCiUqx7T5iqx7pzAeKxOWiOrC5 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" 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. Acked-by: Maxime Ripard Tested-by: Dave Stevenson Signed-off-by: Dmitry Baryshkov --- drivers/gpu/drm/Makefile | 1 + drivers/gpu/drm/drm_connector.c | 5 + drivers/gpu/drm/drm_connector_hdmi_audio.c | 189 +++++++++++++++++++++++++++++ include/drm/drm_connector.h | 125 +++++++++++++++++++ 4 files changed, 320 insertions(+) diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile index 19fb370fbc56772077973c864df71e4b8e0bf99b..4f7f8bde021f9713ab425fcfc9b687f3c7507d73 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_audio.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 ae6e71305f3000aff1cfe96b050061a300b9478e..0669e0d9521c9d80efef1296180f23d6b38835b7 100644 --- a/drivers/gpu/drm/drm_connector.c +++ b/drivers/gpu/drm/drm_connector.c @@ -33,6 +33,7 @@ #include #include +#include #include #include @@ -281,6 +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); connector->edid_blob_ptr = NULL; connector->epoch_counter = 0; connector->tile_blob_ptr = NULL; @@ -714,6 +716,8 @@ void drm_connector_cleanup(struct drm_connector *connector) DRM_CONNECTOR_REGISTERED)) drm_connector_unregister(connector); + platform_device_unregister(connector->hdmi_codec.codec_pdev); + if (connector->privacy_screen) { drm_privacy_screen_put(connector->privacy_screen); connector->privacy_screen = NULL; @@ -750,6 +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.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 new file mode 100644 index 0000000000000000000000000000000000000000..bd7aab2fdfd3530d1f812ea058f5f6fd9d1c3b27 --- /dev/null +++ b/drivers/gpu/drm/drm_connector_hdmi_audio.c @@ -0,0 +1,189 @@ +// SPDX-License-Identifier: MIT +/* + * Copyright (c) 2024 Linaro Ltd + */ + +#include +#include +#include + +#include +#include + +#include + +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; + + if (funcs->startup) + return funcs->startup(connector); + + return 0; +} + +static int drm_connector_hdmi_audio_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_audio_funcs *funcs = + connector->hdmi_codec.funcs; + + return funcs->prepare(connector, fmt, hparms); +} + +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; + + return funcs->shutdown(connector); +} + +static int drm_connector_hdmi_audio_mute_stream(struct device *dev, void *data, + bool enable, int direction) +{ + struct drm_connector *connector = data; + const struct drm_connector_hdmi_audio_funcs *funcs = + connector->hdmi_codec.funcs; + + if (funcs->mute_stream) + return funcs->mute_stream(connector, enable, direction); + + return -ENOTSUPP; +} + +static int drm_connector_hdmi_audio_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.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) + return 0; + + return -EINVAL; +} + +static int drm_connector_hdmi_audio_get_eld(struct device *dev, void *data, + uint8_t *buf, size_t len) +{ + struct drm_connector *connector = data; + + mutex_lock(&connector->eld_mutex); + memcpy(buf, connector->eld, min(sizeof(connector->eld), len)); + mutex_unlock(&connector->eld_mutex); + + return 0; +} + +static int drm_connector_hdmi_audio_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_audio_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_audio_plugged_notify); + +static const struct hdmi_codec_ops drm_connector_hdmi_audio_ops = { + .audio_startup = drm_connector_hdmi_audio_startup, + .prepare = drm_connector_hdmi_audio_prepare, + .audio_shutdown = drm_connector_hdmi_audio_shutdown, + .mute_stream = drm_connector_hdmi_audio_mute_stream, + .get_eld = drm_connector_hdmi_audio_get_eld, + .get_dai_id = drm_connector_hdmi_audio_get_dai_id, + .hook_plugged_cb = drm_connector_hdmi_audio_hook_plugged_cb, +}; + +/** + * drm_connector_hdmi_audio_init - Initialize HDMI Codec device for the DRM connector + * @connector: A pointer to the connector to allocate codec for + * @hdmi_codec_dev: device to be used as a parent for the HDMI Codec + * @funcs: callbacks for this HDMI Codec + * @max_i2s_playback_channels: maximum number of playback I2S channels + * @spdif_playback: set if HDMI codec has S/PDIF playback port + * @dai_port: sound DAI port, -1 if it is not enabled + * + * Create a HDMI codec device to be used with the specified connector. + * + * Returns: + * Zero on success, error code on failure. + */ +int drm_connector_hdmi_audio_init(struct drm_connector *connector, + struct device *hdmi_codec_dev, + const struct drm_connector_hdmi_audio_funcs *funcs, + unsigned int max_i2s_playback_channels, + bool spdif_playback, + int dai_port) +{ + struct hdmi_codec_pdata codec_pdata = { + .ops = &drm_connector_hdmi_audio_ops, + .max_i2s_channels = max_i2s_playback_channels, + .i2s = !!max_i2s_playback_channels, + .spdif = spdif_playback, + .no_i2s_capture = true, + .no_spdif_capture = true, + .data = connector, + }; + struct platform_device *pdev; + + if (!funcs || + !funcs->prepare || + !funcs->shutdown) + return -EINVAL; + + connector->hdmi_codec.funcs = funcs; + connector->hdmi_codec.dai_port = dai_port; + + pdev = platform_device_register_data(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; +} +EXPORT_SYMBOL(drm_connector_hdmi_audio_init); diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index d1be19242a5c5d7ab6b38cced1da336830b3848d..bdd8637196a608319e81fb3aee286ce0fd22cd9c 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 +1143,53 @@ struct drm_connector_state { struct drm_connector_hdmi_state hdmi; }; +struct drm_connector_hdmi_audio_funcs { + /** + * @startup: + * + * Called when ASoC starts an audio stream setup. The + * @startup() is optional. + * + * Returns: + * 0 on success, a negative error code otherwise + */ + int (*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); + + /** + * @shutdown: + * + * Shut down the audio stream. Mandatory. + * + * Returns: + * 0 on success, a negative error code otherwise + */ + void (*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 */ @@ -1660,6 +1709,68 @@ struct drm_cmdline_mode { bool tv_mode_specified; }; +/** + * struct drm_connector_hdmi_audio - DRM gemeric HDMI Codec-related structure + * + * HDMI drivers usually incorporate a HDMI Codec. This structure expresses the + * generic HDMI Codec as used by the DRM HDMI Codec framework. + */ +struct drm_connector_hdmi_audio { + /** + * @funcs: + * + * Implementation of the HDMI codec functionality to be used by the DRM + * HDMI Codec framework. + */ + const struct drm_connector_hdmi_audio_funcs *funcs; + + /** + * @codec_pdev: + * + * Platform device created to hold the HDMI Codec. It will be + * automatically unregistered during drm_connector_cleanup(). + */ + struct platform_device *codec_pdev; + + /** + * @lock: + * + * Mutex to protect @last_state, @plugged_cb and @plugged_cb_dev. + */ + struct mutex lock; + + /** + * @plugged_cb: + * + * Callback to be called when the HDMI sink get plugged to or unplugged + * from this connector. This is assigned by the framework when + * requested by the ASoC code. + */ + void (*plugged_cb)(struct device *dev, bool plugged); + + /** + * @plugged_cb_dev: + * + * The data for @plugged_cb(). It is being provided by the ASoC. + */ + struct device *plugged_cb_dev; + + /** + * @last_state: + * + * Last plugged state recored by the framework. It is used to correctly + * report the state to @plugged_cb(). + */ + bool last_state; + + /** + * @dai_port: + * + * The port in DT that is used for the Codec DAI. + */ + int dai_port; +}; + /* * struct drm_connector_hdmi - DRM Connector HDMI-related structure */ @@ -2121,6 +2232,11 @@ 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_audio hdmi_codec; }; #define obj_to_connector(x) container_of(x, struct drm_connector, base) @@ -2153,6 +2269,12 @@ int drmm_connector_hdmi_init(struct drm_device *dev, struct i2c_adapter *ddc, unsigned long supported_formats, unsigned int max_bpc); +int drm_connector_hdmi_audio_init(struct drm_connector *connector, + struct device *hdmi_codec_dev, + const struct drm_connector_hdmi_audio_funcs *funcs, + unsigned int max_i2s_playback_channels, + bool spdif_playback, + int sound_dai_port); void drm_connector_attach_edid_property(struct drm_connector *connector); int drm_connector_register(struct drm_connector *connector); int drm_connector_dynamic_register(struct drm_connector *connector); @@ -2160,6 +2282,9 @@ 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_audio_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)