From patchwork Wed Jul 10 07:07:49 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: 11038237 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 15A4B1395 for ; Wed, 10 Jul 2019 07:25:44 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id F3F1428874 for ; Wed, 10 Jul 2019 07:25:43 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E7BC5288C9; Wed, 10 Jul 2019 07:25:43 +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 6F0FF28874 for ; Wed, 10 Jul 2019 07:25:43 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 026DE89BAE; Wed, 10 Jul 2019 07:25:21 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-pl1-x641.google.com (mail-pl1-x641.google.com [IPv6:2607:f8b0:4864:20::641]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5E70789A5D for ; Wed, 10 Jul 2019 07:08:34 +0000 (UTC) Received: by mail-pl1-x641.google.com with SMTP id t14so724429plr.11 for ; Wed, 10 Jul 2019 00:08:34 -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=WaPX7Qm8pphWRb9H2V1MYjbTnx5UInRykIyxCEX1ORI=; b=SQNuIBqo4X67BGpNqKS+s8kM+hLztxIzr0ZQm+vjamK8lW2Iq/0swfMWGa54lTWzHw ojJBEMAv099k6VZQtW//lWySuLfKx0/wUTZhsZ94UzrKu2nusXrHenTfGjL6i4pkWtYR 7C1l7CopxvrCXhoEexBnrTamcAyvpf9zcJJLNBOKK3MiXpqU1kyRc2TqTyuCd0KTFBfE vjhL7jFFn2w0pVVzgWN8ADGytV46frRIWyJNRngnwtjsyVQY4MU8RqP2pCTsWckPOFp+ GeKVmKkb9b2jnm1fI2lP+n//xQYoft8VhOiitqIMRATE63BMpBycLHFTuUR6ACHBLb80 OQ9A== X-Gm-Message-State: APjAAAUUKn1uJpX+wfE4v1/uPkai53BZTVqrzKEevUDgeW71Wx4+M3w9 4MrKvg9zyr42U9R4kfDMbtbQ4w== X-Google-Smtp-Source: APXvYqwJxeQI4IU/isPQSbW7/RFTdjLP36UUzkNzUYAWZ/cnDLdWfp47I9zgN645iZiXTGJbotce3w== X-Received: by 2002:a17:902:7281:: with SMTP id d1mr36683815pll.329.1562742513992; Wed, 10 Jul 2019 00:08:33 -0700 (PDT) Received: from localhost ([2401:fa00:1:b:e688:dfd2:a1a7:2956]) by smtp.gmail.com with ESMTPSA id b26sm1169668pfo.129.2019.07.10.00.08.30 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 10 Jul 2019 00:08:33 -0700 (PDT) From: Cheng-Yi Chiang To: linux-kernel@vger.kernel.org Subject: [PATCH v2 2/4] drm: bridge: dw-hdmi: Report connector status using callback Date: Wed, 10 Jul 2019 15:07:49 +0800 Message-Id: <20190710070751.260061-3-cychiang@chromium.org> X-Mailer: git-send-email 2.22.0.410.gd8fdbe21b5-goog In-Reply-To: <20190710070751.260061-1-cychiang@chromium.org> References: <20190710070751.260061-1-cychiang@chromium.org> MIME-Version: 1.0 X-Mailman-Approved-At: Wed, 10 Jul 2019 07:25:19 +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=WaPX7Qm8pphWRb9H2V1MYjbTnx5UInRykIyxCEX1ORI=; b=GSnPY+JNHAWEHjKCK/zb1o8YMdnlwZb/hoL00TXep6OdNrZzYmurM0DFsUSLSE8Z8K ful3CLkTx7wwHAbwCdFPNIjX/s5x6HZO+oDqrtuS+QKJq0aS5GHXjukMcmyJwC7u6Kpn 8kCDUA3Dl8GPtYwSJWFD+lhclag9j9Goi9IkA= 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 implements set_plugged_cb op 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 --- .../gpu/drm/bridge/synopsys/dw-hdmi-audio.h | 3 + .../drm/bridge/synopsys/dw-hdmi-i2s-audio.c | 10 ++++ drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 55 ++++++++++++++++++- 3 files changed, 67 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-audio.h b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-audio.h index 63b5756f463b..f523c590984e 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-audio.h +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-audio.h @@ -2,6 +2,8 @@ #ifndef DW_HDMI_AUDIO_H #define DW_HDMI_AUDIO_H +#include + struct dw_hdmi; struct dw_hdmi_audio_data { @@ -17,6 +19,7 @@ struct dw_hdmi_i2s_audio_data { void (*write)(struct dw_hdmi *hdmi, u8 val, int offset); u8 (*read)(struct dw_hdmi *hdmi, int offset); + int (*set_plugged_cb)(struct dw_hdmi *hdmi, hdmi_codec_plugged_cb fn); }; #endif 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..7b93cf05c985 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 +104,20 @@ 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 dw_hdmi_i2s_audio_data *audio = data; + struct dw_hdmi *hdmi = audio->hdmi; + + return audio->set_plugged_cb(hdmi, fn); +} + 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..ce6646067472 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c @@ -26,6 +26,8 @@ #include #include +#include + #include #include @@ -185,6 +187,9 @@ struct dw_hdmi { void (*disable_audio)(struct dw_hdmi *hdmi); struct cec_notifier *cec_notifier; + + hdmi_codec_plugged_cb plugged_cb; + enum drm_connector_status last_connector_result; }; #define HDMI_IH_PHY_STAT0_RX_SENSE \ @@ -209,6 +214,40 @@ static inline u8 hdmi_readb(struct dw_hdmi *hdmi, int offset) return val; } +static void handle_plugged_change(struct dw_hdmi *hdmi, bool plugged) +{ + struct platform_device *codec_pdev; + + if (!hdmi->audio || IS_ERR(hdmi->audio)) + return; + codec_pdev = platform_get_drvdata(hdmi->audio); + if (!codec_pdev || IS_ERR(codec_pdev)) + return; + if (!hdmi->plugged_cb) + return; + + hdmi->plugged_cb(&codec_pdev->dev, plugged); +} + +static int hdmi_set_plugged_cb(struct dw_hdmi *hdmi, hdmi_codec_plugged_cb fn) +{ + bool plugged; + struct platform_device *codec_pdev; + + if (!hdmi->audio || IS_ERR(hdmi->audio)) + return -EINVAL; + codec_pdev = platform_get_drvdata(hdmi->audio); + if (!codec_pdev || IS_ERR(codec_pdev)) + return -EINVAL; + + mutex_lock(&hdmi->mutex); + hdmi->plugged_cb = fn; + plugged = hdmi->last_connector_result == connector_status_connected; + handle_plugged_change(hdmi, plugged); + mutex_unlock(&hdmi->mutex); + return 0; +} + 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 +2083,7 @@ 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 +2091,18 @@ 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 +2511,7 @@ __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); @@ -2653,6 +2705,7 @@ __dw_hdmi_probe(struct platform_device *pdev, audio.hdmi = hdmi; audio.write = hdmi_writeb; audio.read = hdmi_readb; + audio.set_plugged_cb = hdmi_set_plugged_cb; hdmi->enable_audio = dw_hdmi_i2s_audio_enable; hdmi->disable_audio = dw_hdmi_i2s_audio_disable;