From patchwork Tue Dec 17 00:40:28 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Baryshkov X-Patchwork-Id: 13910779 Received: from mail-lf1-f52.google.com (mail-lf1-f52.google.com [209.85.167.52]) (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 A1F311420DD for ; Tue, 17 Dec 2024 00:40:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.52 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734396047; cv=none; b=CagqaGRJ1RrbihpadiBipEyzikqyuqrHfDqyNxv9qhd6XRZyyJI8oJVdyxSvEyw+WoWawEDuKqymkwPtySG3q8sEfvwGRq6bVcDg8NZlcXK0CbHmrWWh6Puw619ibFNIlztOOgHcFfkZrn3C1lrAU1GdeP/GxVcJIl+47jw1qM8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734396047; c=relaxed/simple; bh=jOa+xmrHN60EcTtWZxceM55LJJb7yZ7lw0Rtlyo5CRg=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=Qm9JtqBDALO9fjXWM+o8dHhjsmzbNU60CJmz9ennWxvoc30iRSdnhL3s8/WVvFPqNN8knR66nNgq3HoT1ebV11L+z6M1zZOo2fXqPnp0iKoe9Kza0QXIb+EEh8T2EQyecqeEZeAzvpc6F11IuUGR1YhYAc3h+gnveJCW4oKgyMc= 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=dU22ezaa; arc=none smtp.client-ip=209.85.167.52 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="dU22ezaa" Received: by mail-lf1-f52.google.com with SMTP id 2adb3069b0e04-53e389d8dc7so4720573e87.0 for ; Mon, 16 Dec 2024 16:40:45 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1734396044; x=1735000844; 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=PzOQetYap6JlXujjWm1yaqFwEQG+fs4gdKxS6/azxrk=; b=dU22ezaa1x6bgV+L356j+9doHYVmRrHXb5UKXOXHSVBCNhyprpXtPS1Nxa4XuRrWXM 00PsWkSZW0SkfezB0viQzfe5Ejx2FdJ4oGJk6nLDBsmu5vTxKB/5CRTlhklrvdWyfXVG EVSU6YnwFl97opd1WL14642eCse69Q7Qi8NzD31YzQcbEdCsLLyJ3UFXSj0i3AVUuz4m qU/wL/CYXjGLW+f4z+0bJRFphE2ng7tZicBW6UMifUxXHUvCEXhJHheobpJ9+SoHnI/v Dod08z/wFk9DcOrutJrpyndrhwatK4k6+Yo44C0b6zPd2kvu0e8HgipBcTQtPpIwh47H Mv9w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1734396044; x=1735000844; 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=PzOQetYap6JlXujjWm1yaqFwEQG+fs4gdKxS6/azxrk=; b=NZC0s97jY+T8pf7snqZh9Lsx38g26eH2vybZLwSx37T7/QetgN6A5Pc9HkyOR1yefM kXablwFCOfxEKmW5ItFb/h82q53rbl2UFnAFekHomiQM7GfyAGf5Qro5NZUTPephs3tZ zIBKwixvdJTyHGdNgXZn8SNg+jX9vMm//S90uFemR+7HwH1Vl2Ysca5OEHiI4w1s84hk fStRzmq7s2aEwIufGwmbhx0Q+m1BBJ7XVwM2WXAp+KolwKIraBVm/SGhY7R452dSK+nk gtGQY+lMK2sCWsf3H8xNQVjEGghw5JxcdRTB3Z5cPN3PWoYP17ezJCs39Hg1LqznvKkh Kw4w== X-Forwarded-Encrypted: i=1; AJvYcCUILIDFIMYEKZaicQ0pxClGhPj1CY4I5JF7q/ZDG+k6Y6xJ/GFtFaXPdtrI3oqfCbO7oNTcswuuuZuH07onNZt19w==@vger.kernel.org X-Gm-Message-State: AOJu0YylMfIG/lYaGkU9leUiLi5b6PyDcvQZRTgrmMtle+TMeZvkz+Mv 6hXBBO/u8CjrglpWo2bdjiE0dp25+LuMVtizfDDNtLkzldjks+ICR/QzEMCSWOk= X-Gm-Gg: ASbGncsOP8yahPSlX4IT637d8GWaEcuRFyP7YrSTnrui8oH6AMxFClsh83Qh1XMcegS HNr/oMJ9DNwZSMCGLGtdQVScRciXmKhQq51BmxIDvds2diTGoX+KsuP27ol/MotML2vHLIG6lwV 8mF2NGnmTMLe5+3cq5CEmRWxoFm17qfelAXzDqATy7KEIZxNJYpZAzDmMxP27H275FjP9v3vktr eHv9DynHv//RD66KPqTJrAFv5nje/OnVaY+IIKlyNeCcxGtHkUxL2KGqAdOr8aK X-Google-Smtp-Source: AGHT+IFtRuuo2fJF2WRiUyFfticNHErCMSgKEibB8GOCt/FpctKGI+IFSd6o87o+qJVqIfNTG9ocsQ== X-Received: by 2002:a05:6512:3188:b0:53e:349c:45b6 with SMTP id 2adb3069b0e04-54131050b2amr443087e87.17.1734396043862; Mon, 16 Dec 2024 16:40:43 -0800 (PST) Received: from umbar.lan ([192.130.178.90]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-54120ba9ab2sm1009122e87.74.2024.12.16.16.40.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 16 Dec 2024 16:40:42 -0800 (PST) From: Dmitry Baryshkov Date: Tue, 17 Dec 2024 02:40:28 +0200 Subject: [PATCH v7 06/10] drm/display/hdmi: implement hotplug functions 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-v7-6-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=5694; i=dmitry.baryshkov@linaro.org; h=from:subject:message-id; bh=jOa+xmrHN60EcTtWZxceM55LJJb7yZ7lw0Rtlyo5CRg=; b=owGbwMvMwMXYbdNlx6SpcZXxtFoSQ3rCiUolXV5D50aBgykmX6M9NRqbpZhyV6jJc9qKbGaec D3u5bZORmMWBkYuBlkxRRafgpapMZuSwz7smFoPM4iVCWQKAxenAExkkQkHw7I/GXvq5uvveN10 RzyEe9nZK20WF20Dl799ZtBjUrOe33DWpP5jC7RDGMrWrvujfs6tVKXNpv3zynfrvPXicoOmr/f Va/GbLuJX9XjNvBehy1jULC7nt8/4ufBtZ5zbQhvu9YIWzvN28j5Rfs26+6/RPHXO7lKrVaFSvc 9lmV4+zme5aXCiwp/D2HO+i2KXeNfvoGkS+hsfcx+8+uuku2aDnpmLfkJZ9zk3LfNJczO7df5na +8IX5y6fH5g0Zy5tnlf5f9K7JZZLCGy8+a+6xdrDis0+L3/L3W5OvLibJvroV+DW3b9u3/+baHS 7nTrO27X3wZNO/Up6apjZg/bfh73Qt8wTTauV+xujlJHAQ== X-Developer-Key: i=dmitry.baryshkov@linaro.org; a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A The HDMI Connectors need to perform a variety of tasks when the HDMI connector state changes. Such tasks include setting or invalidating CEC address, notifying HDMI codec driver, updating scrambler data, etc. Implementing such tasks in a driver-specific callbacks is error prone. Start implementing the generic helper function (currently handling only the HDMI Codec framework) to be used by drivers utilizing HDMI Connector framework. Signed-off-by: Dmitry Baryshkov Reviewed-by: Maxime Ripard --- drivers/gpu/drm/display/drm_hdmi_state_helper.c | 56 +++++++++++++++++++++++++ include/drm/display/drm_hdmi_state_helper.h | 5 +++ include/drm/drm_connector.h | 16 +++++++ 3 files changed, 77 insertions(+) diff --git a/drivers/gpu/drm/display/drm_hdmi_state_helper.c b/drivers/gpu/drm/display/drm_hdmi_state_helper.c index 80bf2829ba89b5f84fed4fa9eb1d6302e10a4f9e..e175c0eaa1cdc0b8b8b8408bdc3fdcf49067c634 100644 --- a/drivers/gpu/drm/display/drm_hdmi_state_helper.c +++ b/drivers/gpu/drm/display/drm_hdmi_state_helper.c @@ -769,3 +769,59 @@ drm_atomic_helper_connector_hdmi_clear_audio_infoframe(struct drm_connector *con return ret; } EXPORT_SYMBOL(drm_atomic_helper_connector_hdmi_clear_audio_infoframe); + +static void +drm_atomic_helper_connector_hdmi_update(struct drm_connector *connector, + enum drm_connector_status status) +{ + const struct drm_edid *drm_edid; + + if (status == connector_status_disconnected) { + // TODO: also handle CEC and scramber, HDMI sink disconnected. + drm_connector_hdmi_codec_plugged_notify(connector, false); + } + + if (connector->hdmi.funcs->read_edid) + drm_edid = connector->hdmi.funcs->read_edid(connector); + else + drm_edid = drm_edid_read(connector); + + drm_edid_connector_update(connector, drm_edid); + + drm_edid_free(drm_edid); + + if (status == connector_status_connected) { + // TODO: also handle CEC and scramber, HDMI sink is now connected. + drm_connector_hdmi_codec_plugged_notify(connector, true); + } +} + +/** + * drm_atomic_helper_connector_hdmi_hotplug - Handle the hotplug event for the HDMI connector + * @connector: A pointer to the HDMI connector + * @status: Connection status + * + * This function should be called as a part of the .detect() / .detect_ctx() + * callbacks, updating the HDMI-specific connector's data. + */ +void drm_atomic_helper_connector_hdmi_hotplug(struct drm_connector *connector, + enum drm_connector_status status) +{ + drm_atomic_helper_connector_hdmi_update(connector, status); +} +EXPORT_SYMBOL(drm_atomic_helper_connector_hdmi_hotplug); + +/** + * drm_atomic_helper_connector_hdmi_force - HDMI Connector implementation of the force callback + * @connector: A pointer to the HDMI connector + * + * This function implements the .force() callback for the HDMI connectors. It + * can either be used directly as the callback or should be called from within + * the .force() callback implementation to maintain the HDMI-specific + * connector's data. + */ +void drm_atomic_helper_connector_hdmi_force(struct drm_connector *connector) +{ + drm_atomic_helper_connector_hdmi_update(connector, connector->status); +} +EXPORT_SYMBOL(drm_atomic_helper_connector_hdmi_force); diff --git a/include/drm/display/drm_hdmi_state_helper.h b/include/drm/display/drm_hdmi_state_helper.h index d6d65da6d8f9ee46de33114cce2d6fbe6098a862..9ae19f3caf727f9a0fe06e6afe5fc46db924444f 100644 --- a/include/drm/display/drm_hdmi_state_helper.h +++ b/include/drm/display/drm_hdmi_state_helper.h @@ -8,6 +8,8 @@ struct drm_connector; struct drm_connector_state; struct hdmi_audio_infoframe; +enum drm_connector_status; + void __drm_atomic_helper_connector_hdmi_reset(struct drm_connector *connector, struct drm_connector_state *new_conn_state); @@ -19,6 +21,9 @@ int drm_atomic_helper_connector_hdmi_update_audio_infoframe(struct drm_connector int drm_atomic_helper_connector_hdmi_clear_audio_infoframe(struct drm_connector *connector); int drm_atomic_helper_connector_hdmi_update_infoframes(struct drm_connector *connector, struct drm_atomic_state *state); +void drm_atomic_helper_connector_hdmi_hotplug(struct drm_connector *connector, + enum drm_connector_status status); +void drm_atomic_helper_connector_hdmi_force(struct drm_connector *connector); enum drm_mode_status drm_hdmi_connector_mode_valid(struct drm_connector *connector, diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index 536d604b6fb27368c43805a2ecf57fac06b3d472..23340696bf36313952da0089b9dc24dcf772a9c5 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -45,6 +45,7 @@ struct drm_property; struct drm_property_blob; struct drm_printer; struct drm_privacy_screen; +struct drm_edid; struct edid; struct hdmi_codec_daifmt; struct hdmi_codec_params; @@ -1247,6 +1248,21 @@ struct drm_connector_hdmi_funcs { int (*write_infoframe)(struct drm_connector *connector, enum hdmi_infoframe_type type, const u8 *buffer, size_t len); + + /** + * @read_edid: + * + * This callback is used by the framework as a replacement for reading + * the EDID from connector->ddc. It is still recommended to provide + * connector->ddc instead of implementing this callback. Returned EDID + * should be freed via the drm_edid_free(). + * + * The @read_edid callback is optional. + * + * Returns: + * Valid EDID on success, NULL in case of failure. + */ + const struct drm_edid *(*read_edid)(struct drm_connector *connector); }; /**