From patchwork Wed Jul 17 08:33:24 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: 11047891 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 043EF13A4 for ; Wed, 17 Jul 2019 13:51:02 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E94B128785 for ; Wed, 17 Jul 2019 13:51:01 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DDC6A2874B; Wed, 17 Jul 2019 13:51:01 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 6D32E286C4 for ; Wed, 17 Jul 2019 13:51:01 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 429116E1B7; Wed, 17 Jul 2019 13:50:44 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-pf1-x444.google.com (mail-pf1-x444.google.com [IPv6:2607:f8b0:4864:20::444]) by gabe.freedesktop.org (Postfix) with ESMTPS id 908056E188 for ; Wed, 17 Jul 2019 08:33:49 +0000 (UTC) Received: by mail-pf1-x444.google.com with SMTP id 19so10484165pfa.4 for ; Wed, 17 Jul 2019 01:33:49 -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=5TBZYfajN5HVRea84QAJKLSTPB155HmdASNn879m/EQ=; b=LuJN6tTNTRd3YrehJleLnrwMfM9D+0kPLa0xJjebzpvPH8UsFBSSE7eSyJZt6xP86m 4Dw0P7rppMnhEKj3AbqUYrlXIj+dtr3toSQluT+jhrlMiIuVFs+uDc4jp6vYD4ET2cm2 wq547WF/tR/gxCI2rh9RQfzT6ehaqXS/oYj9LyEkerMCgjkUshENVyIymZtGBrQEaEpV ZXgJnYB3+Wde3kNvEhV9HIi/19+e27o6vgkXohmCXU940PVv+dH7Hqs9NpHKI++ScyLD 9jM80K6zXUj3jhkiDG+O8a73hYVSKLQfTUKUaRF/zzsbxwLtXsBVXqj7kD3AWqowY+17 lKag== X-Gm-Message-State: APjAAAXpatl7WhfkEisB6h6ly0ga/3U5WTh/LTwUjPjWFE16sBdaC7rF fV30zib9nParrLdx5B/YH0osRQ== X-Google-Smtp-Source: APXvYqxPydhnliUzK2uNkEbcc7+2J2IwaFMzYdUrhNnVBedPggzZ6oqRnJJXOC3B5Xd5pYqgORkgkQ== X-Received: by 2002:a65:41c6:: with SMTP id b6mr39402014pgq.269.1563352429076; Wed, 17 Jul 2019 01:33:49 -0700 (PDT) Received: from localhost ([2401:fa00:1:b:e688:dfd2:a1a7:2956]) by smtp.gmail.com with ESMTPSA id e6sm27560082pfn.71.2019.07.17.01.33.45 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 17 Jul 2019 01:33:48 -0700 (PDT) From: Cheng-Yi Chiang To: linux-kernel@vger.kernel.org Subject: [PATCH v5 2/5] drm: bridge: dw-hdmi: Report connector status using callback Date: Wed, 17 Jul 2019 16:33:24 +0800 Message-Id: <20190717083327.47646-3-cychiang@chromium.org> X-Mailer: git-send-email 2.22.0.510.g264f2c817a-goog In-Reply-To: <20190717083327.47646-1-cychiang@chromium.org> References: <20190717083327.47646-1-cychiang@chromium.org> MIME-Version: 1.0 X-Mailman-Approved-At: Wed, 17 Jul 2019 13:50:42 +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=5TBZYfajN5HVRea84QAJKLSTPB155HmdASNn879m/EQ=; b=IZmFxnxuDP3SuQvqoNRO+M8bB3TSTsZBFrAjJvHPnM9kp7cArfgRl3fNvJnOhR6Nt/ owbNXXyCv73kC3TUprNz5BR5MHcpZuh2mG8YWDAxqt28eldSBGCdTQdgybXQOvetlHuN oDKjd96uLQtPAXxkS81Zld3NvoTHxNAXtJZts= 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, dianders@chromium.org, linux-rockchip@lists.infradead.org, David Airlie , dri-devel@lists.freedesktop.org, Takashi Iwai , Liam Girdwood , tzungbi@chromium.org, Jaroslav Kysela , Hans Verkuil , Russell King , Mark Brown , Laurent Pinchart , dgreid@chromium.org, linux-arm-kernel@lists.infradead.org, Cheng-Yi Chiang Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP 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 5cbb71a866d5..ca56783fae47 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c @@ -104,10 +104,21 @@ 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_shutdown = dw_hdmi_i2s_audio_shutdown, .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 045b1b13fd0e..f32c66a6873d 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c @@ -185,6 +185,10 @@ struct dw_hdmi { void (*disable_audio)(struct dw_hdmi *hdmi); 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 \ @@ -209,6 +213,28 @@ 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); @@ -2044,6 +2070,7 @@ 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; @@ -2051,7 +2078,18 @@ 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) @@ -2460,6 +2498,7 @@ __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 b4ca970a5b75..d6c925236c55 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; @@ -152,6 +154,8 @@ struct dw_hdmi *dw_hdmi_bind(struct platform_device *pdev, 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_audio_enable(struct dw_hdmi *hdmi); void dw_hdmi_audio_disable(struct dw_hdmi *hdmi);