From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 59C48CD3427 for ; Mon, 4 May 2026 19:11:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=+lbSKPdiopZL30uTDNbEN1kUm1XZOh7nc0sDCC6RnNk=; b=LdW42R+7+3m6+Ql6bY3EXuxxZC ZFmhRkD5T64lm42IxRIp8oconBS0GiXIZ3n6x4/614sc8JQ6wHqSW3wPGlI4/gRT5VAyFCG1pMwOg uhrx24eqWkLPT3k1bjPRoYtHHGU2uYXv4IpGzUeU9vQ7X4kwaFoqBtPNPMcvtIgsmvhsVjHepIr3l g+i0zXaQEY6swooXIl0d9nlmtmrE9G/76LhIvhUQp4BOVRqyR6wQDWLyo6Qgi92/d9d1bMfkcCmhe sLVBup07gJ6K4ZHFrA1osj6SbEHDbNhkcDmMfX2KcaB614LgbDKJdC0/oTladDYtWhkr03t/lgyaX 82mk+BCw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1wJyhg-0000000E58j-0XXV; Mon, 04 May 2026 19:11:40 +0000 Received: from smtp.forwardemail.net ([149.28.215.223]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1wJyhc-0000000E53B-49wQ for linux-arm-kernel@lists.infradead.org; Mon, 04 May 2026 19:11:38 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kwiboo.se; h=Content-Transfer-Encoding: MIME-Version: References: In-Reply-To: Message-ID: Date: Subject: Cc: To: From; q=dns/txt; s=fe-e1b5cab7be; t=1777921896; bh=+lbSKPdiopZL30uTDNbEN1kUm1XZOh7nc0sDCC6RnNk=; b=WRNkUO7YsTGVJvwt+ZEGV9MPIaBAo8docj1Jb/a1bW96aQj/mi058Oa/Yx1y+aRg2zmwkkhY/ vtiPIaA7A35xho8u5l9xfvV7Nhg4pwwshi/Q6Nge06pQ9OsDKjhpCOuS8cU67epADfnudNRFAwJ DJ7n6zoBOHWuNWkvRtOK3a1YncxMZg5qoZnvMwOTlIt3pznCCOD6vNTLypI0vhQ/NGXxMz40jEo LMURGFtEowunyRlqB5vI5MekIY7tlVh7FZlDYbxTq9WoWkaPSEK6NJweUFfpdjQk6lhT1cpZdUo Uo2GScSIWP8qpJ8lCOGH7cavvHCv2Y5sLz+lz8E0qvKQ== X-Forward-Email-ID: 69f8ef5604bb1dff846bb854 X-Forward-Email-Sender: rfc822; jonas@kwiboo.se, smtp.forwardemail.net, 149.28.215.223 X-Forward-Email-Version: 2.7.7 X-Forward-Email-Website: https://forwardemail.net X-Complaints-To: abuse@forwardemail.net X-Report-Abuse: abuse@forwardemail.net X-Report-Abuse-To: abuse@forwardemail.net From: Jonas Karlman To: Andrzej Hajda , Neil Armstrong , Robert Foss , Heiko Stuebner , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter Cc: Liu Ying , Sandy Huang , Andy Yan , Chen-Yu Tsai , Christian Hewitt , Diederik de Haas , Nicolas Frattaroli , Dmitry Baryshkov , dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-sunxi@lists.linux.dev, imx@lists.linux.dev, linux-kernel@vger.kernel.org Subject: [PATCH v4 03/17] drm: bridge: dw_hdmi: Call poweron/poweroff from atomic enable/disable Date: Mon, 4 May 2026 19:10:40 +0000 Message-ID: <20260504191059.275928-4-jonas@kwiboo.se> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260504191059.275928-1-jonas@kwiboo.se> References: <20260504191059.275928-1-jonas@kwiboo.se> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260504_121137_416535_69AAEF47 X-CRM114-Status: GOOD ( 13.48 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Change to only call poweron/poweroff from atomic_enable/atomic_disable funcs instead of trying to be clever by keeping a bridge_is_on state and poweron/off in the hotplug irq handler. The bridge is already enabled/disabled depending on connection state with the call to drm_helper_hpd_irq_event() in hotplug irq handler. A benefit of this is that drm mode_config mutex is always held at poweron/off, something that may reduce the need for the dw-hdmi mutex. Reviewed-by: Neil Armstrong Signed-off-by: Jonas Karlman --- v4: No change v3: Collect r-b tag v2: Update commit message --- drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 33 ++--------------------- 1 file changed, 2 insertions(+), 31 deletions(-) diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c index 0647ec6632d8..4ecad0d2eeaa 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c @@ -171,7 +171,6 @@ struct dw_hdmi { enum drm_connector_force force; /* mutex-protected force state */ struct drm_connector *curr_conn;/* current connector (only valid when !disabled) */ bool disabled; /* DRM has disabled our bridge */ - bool bridge_is_on; /* indicates the bridge is on */ bool rxsense; /* rxsense state */ u8 phy_mask; /* desired phy int mask settings */ u8 mc_clkdis; /* clock disable register */ @@ -2400,8 +2399,6 @@ static void initialize_hdmi_ih_mutes(struct dw_hdmi *hdmi) static void dw_hdmi_poweron(struct dw_hdmi *hdmi) { - hdmi->bridge_is_on = true; - /* * The curr_conn field is guaranteed to be valid here, as this function * is only be called when !hdmi->disabled. @@ -2415,30 +2412,6 @@ static void dw_hdmi_poweroff(struct dw_hdmi *hdmi) hdmi->phy.ops->disable(hdmi, hdmi->phy.data); hdmi->phy.enabled = false; } - - hdmi->bridge_is_on = false; -} - -static void dw_hdmi_update_power(struct dw_hdmi *hdmi) -{ - int force = hdmi->force; - - if (hdmi->disabled) { - force = DRM_FORCE_OFF; - } else if (force == DRM_FORCE_UNSPECIFIED) { - if (hdmi->rxsense) - force = DRM_FORCE_ON; - else - force = DRM_FORCE_OFF; - } - - if (force == DRM_FORCE_OFF) { - if (hdmi->bridge_is_on) - dw_hdmi_poweroff(hdmi); - } else { - if (!hdmi->bridge_is_on) - dw_hdmi_poweron(hdmi); - } } /* @@ -2563,7 +2536,6 @@ static void dw_hdmi_connector_force(struct drm_connector *connector) mutex_lock(&hdmi->mutex); hdmi->force = connector->force; - dw_hdmi_update_power(hdmi); dw_hdmi_update_phy_mask(hdmi); mutex_unlock(&hdmi->mutex); } @@ -2988,7 +2960,7 @@ static void dw_hdmi_bridge_atomic_disable(struct drm_bridge *bridge, mutex_lock(&hdmi->mutex); hdmi->disabled = true; hdmi->curr_conn = NULL; - dw_hdmi_update_power(hdmi); + dw_hdmi_poweroff(hdmi); dw_hdmi_update_phy_mask(hdmi); handle_plugged_change(hdmi, false); mutex_unlock(&hdmi->mutex); @@ -3006,7 +2978,7 @@ static void dw_hdmi_bridge_atomic_enable(struct drm_bridge *bridge, mutex_lock(&hdmi->mutex); hdmi->disabled = false; hdmi->curr_conn = connector; - dw_hdmi_update_power(hdmi); + dw_hdmi_poweron(hdmi); dw_hdmi_update_phy_mask(hdmi); handle_plugged_change(hdmi, true); mutex_unlock(&hdmi->mutex); @@ -3106,7 +3078,6 @@ void dw_hdmi_setup_rx_sense(struct dw_hdmi *hdmi, bool hpd, bool rx_sense) if (hpd) hdmi->rxsense = true; - dw_hdmi_update_power(hdmi); dw_hdmi_update_phy_mask(hdmi); } mutex_unlock(&hdmi->mutex); -- 2.54.0