From patchwork Wed Sep 18 08:24:57 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cheng-yi Chiang X-Patchwork-Id: 11151763 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B27181747 for ; Thu, 19 Sep 2019 07:35:59 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 9ACD420665 for ; Thu, 19 Sep 2019 07:35:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9ACD420665 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=chromium.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 235BD6F73C; Thu, 19 Sep 2019 07:35:46 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-pg1-x542.google.com (mail-pg1-x542.google.com [IPv6:2607:f8b0:4864:20::542]) by gabe.freedesktop.org (Postfix) with ESMTPS id A0EB46EE4D for ; Wed, 18 Sep 2019 08:25:27 +0000 (UTC) Received: by mail-pg1-x542.google.com with SMTP id m29so3583811pgc.3 for ; Wed, 18 Sep 2019 01:25:27 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=a8fpKw2ued4D0BZtPXoBVbNaINT07QEPJ3+f6qSFqa0=; b=Qlqa4n84H3UvSfeKfyOyg4N3DnWDDqtKEyPggpVMuNtnPJEdU0DciQjOlLY2kV+6Cy fk8pDGbRbNAEW5UE6vpm87EdqYdwICAqZP28mCKlCjxXp3dJMUVGAy6WbR0/pTdOl4+Y nuwMyVPK/ObqBl4NYS1ZGrWjQb6H20iAWhU5BlxRhGOoti6NvL+kMyUgKwp05yMz3ZCu zowYKHp7fZtMrtmcFlcgTPckpVsd6ju6ZoOTBuRRcOgQ5wKfvAPMscLinhpDc8GkRIRD ET0LPeRVwFK287m4KbZ0A6POJtmc+hmKRTWWNnNTrd6g6HF9v0u/7BiqkQIhKKkjrIa7 r6uQ== X-Gm-Message-State: APjAAAUXikX9PytckdHWBVEwtR281l63waqFY26lAmOP6VnAS4/5Sjn3 DGjRpgjN/8MfOAzdJhjnYtze+Q== X-Google-Smtp-Source: APXvYqy5CPhm6qI2/zebe2QpmfnfWZEluU/oyFNxHVZx/MVVNaqdA9Eevmxk2fAFygvynvTUVa2Cvw== X-Received: by 2002:a62:ed17:: with SMTP id u23mr2807646pfh.147.1568795127228; Wed, 18 Sep 2019 01:25:27 -0700 (PDT) Received: from localhost ([2401:fa00:1:10:79b4:bd83:e4a5:a720]) by smtp.gmail.com with ESMTPSA id i19sm1424583pjx.1.2019.09.18.01.25.23 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 18 Sep 2019 01:25:26 -0700 (PDT) From: Cheng-Yi Chiang To: linux-kernel@vger.kernel.org Subject: [PATCH v6 1/4] drm: bridge: dw-hdmi: Report connector status using callback Date: Wed, 18 Sep 2019 16:24:57 +0800 Message-Id: <20190918082500.209281-2-cychiang@chromium.org> X-Mailer: git-send-email 2.23.0.237.gc6a4ce50a0-goog In-Reply-To: <20190918082500.209281-1-cychiang@chromium.org> References: <20190918082500.209281-1-cychiang@chromium.org> MIME-Version: 1.0 X-Mailman-Approved-At: Thu, 19 Sep 2019 07:35:45 +0000 X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=a8fpKw2ued4D0BZtPXoBVbNaINT07QEPJ3+f6qSFqa0=; b=mqObWRjUsglw2SplwggSczwvwqzkV7CCbmabV4UCbV1rJdwaV/VcRSoEaw9kRerdS8 eK+8P7Q0g///NSTQv6g9C2Pa2GvvyHqP7Mejlzd0mO5PQBzlxXgLY7ILv1kbjyQkH2Eu tvIyDlfHI3W+zPPvJYck0wJ6U/jpwN5X2DlJk= X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: alsa-devel@alsa-project.org, Neil Armstrong , David Airlie , dri-devel@lists.freedesktop.org, Liam Girdwood , Hans Verkuil , Laurent Pinchart , Jerome Brunet , Takashi Iwai , linux-rockchip@lists.infradead.org, dgreid@chromium.org, Cheng-Yi Chiang , tzungbi@chromium.org, Jonas Karlman , Russell King , Mark Brown , Jaroslav Kysela , linux-arm-kernel@lists.infradead.org, Jernej Skrabec , dianders@chromium.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Allow codec driver register callback function for plug event. The callback registration flow: dw-hdmi <--- hw-hdmi-i2s-audio <--- hdmi-codec dw-hdmi-i2s-audio implements hook_plugged_cb op so codec driver can register the callback. dw-hdmi exports a function dw_hdmi_set_plugged_cb so platform device can register the callback. When connector plug/unplug event happens, report this event using the callback. Make sure that audio and drm are using the single source of truth for connector status. Signed-off-by: Cheng-Yi Chiang --- .../drm/bridge/synopsys/dw-hdmi-i2s-audio.c | 11 +++++ drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 41 ++++++++++++++++++- include/drm/bridge/dw_hdmi.h | 4 ++ 3 files changed, 55 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c index 20f4f92dd866..d7e65c869415 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c @@ -160,12 +160,23 @@ static int dw_hdmi_i2s_get_dai_id(struct snd_soc_component *component, return -EINVAL; } +static int dw_hdmi_i2s_hook_plugged_cb(struct device *dev, void *data, + hdmi_codec_plugged_cb fn, + struct device *codec_dev) +{ + struct dw_hdmi_i2s_audio_data *audio = data; + struct dw_hdmi *hdmi = audio->hdmi; + + return dw_hdmi_set_plugged_cb(hdmi, fn, codec_dev); +} + static struct hdmi_codec_ops dw_hdmi_i2s_ops = { .hw_params = dw_hdmi_i2s_hw_params, .audio_startup = dw_hdmi_i2s_audio_startup, .audio_shutdown = dw_hdmi_i2s_audio_shutdown, .get_eld = dw_hdmi_i2s_get_eld, .get_dai_id = dw_hdmi_i2s_get_dai_id, + .hook_plugged_cb = dw_hdmi_i2s_hook_plugged_cb, }; static int snd_dw_hdmi_probe(struct platform_device *pdev) diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c index aa7efd4da1c8..7ffe8ed675ff 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c @@ -193,6 +193,10 @@ struct dw_hdmi { struct mutex cec_notifier_mutex; struct cec_notifier *cec_notifier; + + hdmi_codec_plugged_cb plugged_cb; + struct device *codec_dev; + enum drm_connector_status last_connector_result; }; #define HDMI_IH_PHY_STAT0_RX_SENSE \ @@ -217,6 +221,28 @@ static inline u8 hdmi_readb(struct dw_hdmi *hdmi, int offset) return val; } +static void handle_plugged_change(struct dw_hdmi *hdmi, bool plugged) +{ + if (hdmi->plugged_cb && hdmi->codec_dev) + hdmi->plugged_cb(hdmi->codec_dev, plugged); +} + +int dw_hdmi_set_plugged_cb(struct dw_hdmi *hdmi, hdmi_codec_plugged_cb fn, + struct device *codec_dev) +{ + bool plugged; + + mutex_lock(&hdmi->mutex); + hdmi->plugged_cb = fn; + hdmi->codec_dev = codec_dev; + plugged = hdmi->last_connector_result == connector_status_connected; + handle_plugged_change(hdmi, plugged); + mutex_unlock(&hdmi->mutex); + + return 0; +} +EXPORT_SYMBOL_GPL(dw_hdmi_set_plugged_cb); + static void hdmi_modb(struct dw_hdmi *hdmi, u8 data, u8 mask, unsigned reg) { regmap_update_bits(hdmi->regm, reg << hdmi->reg_shift, mask, data); @@ -2183,6 +2209,7 @@ dw_hdmi_connector_detect(struct drm_connector *connector, bool force) { struct dw_hdmi *hdmi = container_of(connector, struct dw_hdmi, connector); + enum drm_connector_status result; mutex_lock(&hdmi->mutex); hdmi->force = DRM_FORCE_UNSPECIFIED; @@ -2190,7 +2217,18 @@ dw_hdmi_connector_detect(struct drm_connector *connector, bool force) dw_hdmi_update_phy_mask(hdmi); mutex_unlock(&hdmi->mutex); - return hdmi->phy.ops->read_hpd(hdmi, hdmi->phy.data); + result = hdmi->phy.ops->read_hpd(hdmi, hdmi->phy.data); + + mutex_lock(&hdmi->mutex); + if (result != hdmi->last_connector_result) { + dev_dbg(hdmi->dev, "read_hpd result: %d", result); + handle_plugged_change(hdmi, + result == connector_status_connected); + hdmi->last_connector_result = result; + } + mutex_unlock(&hdmi->mutex); + + return result; } static int dw_hdmi_connector_get_modes(struct drm_connector *connector) @@ -2641,6 +2679,7 @@ __dw_hdmi_probe(struct platform_device *pdev, hdmi->rxsense = true; hdmi->phy_mask = (u8)~(HDMI_PHY_HPD | HDMI_PHY_RX_SENSE); hdmi->mc_clkdis = 0x7f; + hdmi->last_connector_result = connector_status_disconnected; mutex_init(&hdmi->mutex); mutex_init(&hdmi->audio_mutex); diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h index 4b3e863c4f8a..45a05e97e78a 100644 --- a/include/drm/bridge/dw_hdmi.h +++ b/include/drm/bridge/dw_hdmi.h @@ -6,6 +6,8 @@ #ifndef __DW_HDMI__ #define __DW_HDMI__ +#include + struct drm_connector; struct drm_display_mode; struct drm_encoder; @@ -154,6 +156,8 @@ void dw_hdmi_resume(struct dw_hdmi *hdmi); void dw_hdmi_setup_rx_sense(struct dw_hdmi *hdmi, bool hpd, bool rx_sense); +int dw_hdmi_set_plugged_cb(struct dw_hdmi *hdmi, hdmi_codec_plugged_cb fn, + struct device *codec_dev); void dw_hdmi_set_sample_rate(struct dw_hdmi *hdmi, unsigned int rate); void dw_hdmi_set_channel_count(struct dw_hdmi *hdmi, unsigned int cnt); void dw_hdmi_set_channel_status(struct dw_hdmi *hdmi, u8 *channel_status);