From patchwork Mon Oct 28 07:19:25 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: 11214791 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 3CE3B139A for ; Mon, 28 Oct 2019 07:21:34 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (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 C3AF020862 for ; Mon, 28 Oct 2019 07:21:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alsa-project.org header.i=@alsa-project.org header.b="DtGnkrnG"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="hzDxQcpe" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C3AF020862 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=chromium.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=alsa-devel-bounces@alsa-project.org Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 542D41ABF; Mon, 28 Oct 2019 08:20:41 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 542D41ABF DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1572247291; bh=8BMj8KHbTtqtWBMvJBOrToXfdWz/4QLEbnZjQwRkXRQ=; h=From:To:Date:In-Reply-To:References:Cc:Subject:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=DtGnkrnGoM2i5h0znIchb/MrSj3DaaX8QJdY59XqrVWCIJ8XGw8J0MJfu3WRigeYD 1LNnKjhFRZwTL0pzUfkyWJXdhVBKl/QTtWCfZjYtXFSkQbr3ih0D/W1rTPFo1DlKBo l20wFAXjM8+ykxc/Dx2YAvjYO0Wo/HIRyLz21wU4= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 6060BF8044A; Mon, 28 Oct 2019 08:20:33 +0100 (CET) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa1.perex.cz (Postfix, from userid 50401) id 0E185F8048F; Mon, 28 Oct 2019 08:20:33 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on alsa1.perex.cz X-Spam-Level: X-Spam-Status: No, score=0.9 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,SPF_HELO_NONE,SPF_PASS,SURBL_BLOCKED,URIBL_BLOCKED autolearn=disabled version=3.4.0 Received: from mail-pg1-x544.google.com (mail-pg1-x544.google.com [IPv6:2607:f8b0:4864:20::544]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 51C23F8044A for ; Mon, 28 Oct 2019 08:20:29 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 51C23F8044A Authentication-Results: alsa1.perex.cz; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="hzDxQcpe" Received: by mail-pg1-x544.google.com with SMTP id e10so6273406pgd.11 for ; Mon, 28 Oct 2019 00:20:29 -0700 (PDT) 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=z189/JbsrejSxg4snj1cfmf7WABylQJkAzsniyW058U=; b=hzDxQcpe8ZAozCEeLby7W+1X3EA8e4bzhLTQhRD7Xv7NjwoILlXBFKw9g5Qz82uVIg dK78qiaeJFX0mr5gn9tGU7l+LqaGNq0GN5NbdZ3FnYqFy1qadcN/aQmj6+GIum/V59FX 3mukg7LneVke61YvVEM5GJ1xgjhgeVwO2Tp3Q= 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=z189/JbsrejSxg4snj1cfmf7WABylQJkAzsniyW058U=; b=HKrOPpMTETmUThSUIA10VOR2tF2+03RG9zWqz2K1k/jC5uLidRsBa2a0oFnyTlJyoB TmGhaeQp2cgYpXLTjw5HHyV31ZqfNXJRM5GOeXx41xqIInzNyB+lSbDuC3rjMk2IZNUs vPC6dhoxKHDttzMIe9EFvmbaIvYR6E2fW3AeXJLrGRi3F0+TltPq1D/i2EHvi97Rh6B/ pLb15JroOTUF5l8pUWKp8HKlaGLXIVEEFBWz/qLFtd3r1hpUjEOfzk/aK4lx+MYXtDCJ tRcD3BmjwPFXezN0ZelelWT8KKsXqsaPDp7CuOP2EPkC+LPAYw3i/JpLMqmOqiOCpYBD IkWg== X-Gm-Message-State: APjAAAWTJaOb2A2zj3dgD+ZA1y4c3WcpZsFTGUnmSln4nq4NIuA07LiK bHGCUUBO7bGml5vQdQqA7R6TwA== X-Google-Smtp-Source: APXvYqynZ80n84TQmrGPDXJ/uLqAF9zvNS+XaPloiSLuy5wxnfKDe0atLwUdhr4dRrZ0BFGcPPLXZA== X-Received: by 2002:a63:1417:: with SMTP id u23mr11445620pgl.279.1572247228043; Mon, 28 Oct 2019 00:20:28 -0700 (PDT) Received: from localhost ([2401:fa00:1:10:79b4:bd83:e4a5:a720]) by smtp.gmail.com with ESMTPSA id 16sm9908856pfn.35.2019.10.28.00.20.23 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 28 Oct 2019 00:20:27 -0700 (PDT) From: Cheng-Yi Chiang To: linux-kernel@vger.kernel.org Date: Mon, 28 Oct 2019 15:19:25 +0800 Message-Id: <20191028071930.145899-2-cychiang@chromium.org> X-Mailer: git-send-email 2.24.0.rc0.303.g954a862665-goog In-Reply-To: <20191028071930.145899-1-cychiang@chromium.org> References: <20191028071930.145899-1-cychiang@chromium.org> MIME-Version: 1.0 Cc: Mark Rutland , alsa-devel@alsa-project.org, Heiko Stuebner , Neil Armstrong , David Airlie , dri-devel@lists.freedesktop.org, Liam Girdwood , Hans Verkuil , Andrzej Hajda , Laurent Pinchart , Jerome Brunet , Takashi Iwai , linux-rockchip@lists.infradead.org, dgreid@chromium.org, Cheng-Yi Chiang , devicetree@vger.kernel.org, tzungbi@chromium.org, Jonas Karlman , Russell King , Rob Herring , linux-arm-kernel@lists.infradead.org, Jernej Skrabec , dianders@chromium.org, Mark Brown , Daniel Vetter Subject: [alsa-devel] [PATCH v9 1/6] drm: bridge: dw-hdmi: Report connector status using callback X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-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 1d15cf9b6821..6c2c44d0bdee 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c @@ -151,11 +151,22 @@ 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_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 521d689413c8..2102872bf43c 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c @@ -191,6 +191,10 @@ 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 \ @@ -215,6 +219,28 @@ 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); @@ -2161,6 +2187,7 @@ 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; @@ -2168,7 +2195,18 @@ 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) @@ -2619,6 +2657,7 @@ __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 cf528c289857..9a0c8381a069 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_allocation(struct dw_hdmi *hdmi, unsigned int ca);