From nobody Mon Feb 9 13:57:28 2026 Received: from bali.collaboradmins.com (bali.collaboradmins.com [148.251.105.195]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 431957FBAC for ; Sun, 25 Jan 2026 00:23:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.251.105.195 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769300599; cv=none; b=SUdkVyKiK0Ss5pDTjGXjrMBSUkalebS1tl2sTOgJWe9QUNdwSIWLyWOvg1bZOPC8yBDjqeQrmppZYCbmcXl9KuRgVao1rw99ykA9ICSCaufvLOGDQXg27ftaC2uMgahw5J5pLXAoSnX/TqL2RyPHdfTEcwzaHpFXmwAEfq27mNU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769300599; c=relaxed/simple; bh=8wqL/j4IJaRId1cc1OMklQAuagooBA7lFvGgZ3lacX8=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=jCaK/5Ryo8nZ1naj9Fr6OsS6t+/BDamiKYN8i6VrFrKpkPqIoySqqy7cJD1QuDMdJV9YwslaFusOvH8M/Q6dmXX7BymTFj6V6EQb9CiytCZZysiYD8TGpwMQ7OYiFvbjqROFFHsa2unxezDfDQtXhCN9xXa6n8xeQhSgFrIe6Xs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b=frFEKuGo; arc=none smtp.client-ip=148.251.105.195 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b="frFEKuGo" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1769300591; bh=8wqL/j4IJaRId1cc1OMklQAuagooBA7lFvGgZ3lacX8=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=frFEKuGokJ0COs1C06/4drGybqj+WfBIdgKTIXNgv6FZFFmcKIg79ENI62cf5r/Dl 9IakN36H7UPg9kN247/Fr/BPLSvqL8hsbTwoWEe2s+h22Ir++ne8mrQzjHA7h7/Jia teWhm666YmzAg3OZcBaV8hGJCDouNp8qK8ZwzWgqjsT/UHspHvvzbCH0J9+lI036Yi 9vLq40BndVRcdVgtjem9rj+fmd2YTrUpyx5rpv0Y1FbesA9Jh3FEMRFW9Zm6pxfBOh a1BxUi8z44Oh3ibjCh904dWMcnU6NwL3E+NGvgBi3nyV8wJDzIxJ+NiJ5GnBtj0t2I pQixPbjWrXSSA== Received: from localhost (unknown [82.79.138.145]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (prime256v1) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: cristicc) by bali.collaboradmins.com (Postfix) with ESMTPSA id 291F117E141C; Sun, 25 Jan 2026 01:23:11 +0100 (CET) From: Cristian Ciocaltea Date: Sun, 25 Jan 2026 02:23:00 +0200 Subject: [PATCH 2/5] drm/bridge: dw-hdmi-qp: Provide SPD InfoFrame Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260125-dw-hdmi-qp-iframe-v1-2-e0f7649ecc4b@collabora.com> References: <20260125-dw-hdmi-qp-iframe-v1-0-e0f7649ecc4b@collabora.com> In-Reply-To: <20260125-dw-hdmi-qp-iframe-v1-0-e0f7649ecc4b@collabora.com> To: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter Cc: kernel@collabora.com, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org X-Mailer: b4 0.14.3 The hardware is capable of sending Source Product Description (SPD) InfoFrames, hence enable the missing support. Signed-off-by: Cristian Ciocaltea --- drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c | 36 ++++++++++++++++++++++++= +++- drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.h | 1 + 2 files changed, 36 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c b/drivers/gpu/drm= /bridge/synopsys/dw-hdmi-qp.c index b37af6a7e194..429736486d85 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c @@ -986,6 +986,15 @@ static int dw_hdmi_qp_bridge_clear_hdr_drm_infoframe(s= truct drm_bridge *bridge) return 0; } =20 +static int dw_hdmi_qp_bridge_clear_spd_infoframe(struct drm_bridge *bridge) +{ + struct dw_hdmi_qp *hdmi =3D bridge->driver_private; + + dw_hdmi_qp_mod(hdmi, 0, PKTSCHED_SPDI_TX_EN, PKTSCHED_PKT_EN); + + return 0; +} + static int dw_hdmi_qp_bridge_clear_audio_infoframe(struct drm_bridge *brid= ge) { struct dw_hdmi_qp *hdmi =3D bridge->driver_private; @@ -1054,6 +1063,28 @@ static int dw_hdmi_qp_bridge_write_hdr_drm_infoframe= (struct drm_bridge *bridge, return dw_hdmi_qp_config_drm_infoframe(hdmi, buffer, len); } =20 +static int dw_hdmi_qp_bridge_write_spd_infoframe(struct drm_bridge *bridge, + const u8 *buffer, size_t len) +{ + struct dw_hdmi_qp *hdmi =3D bridge->driver_private; + size_t i; + + dw_hdmi_qp_bridge_clear_spd_infoframe(bridge); + + /* SPD packet header */ + dw_hdmi_qp_write_pkt(hdmi, buffer, 1, 2, PKT_SPDI_CONTENTS0); + + /* SPD packet body */ + for (i =3D 0; i < len - 3; i +=3D 4) + dw_hdmi_qp_write_pkt(hdmi, buffer + 3, i, min(len - i - 3, 4), + PKT_SPDI_CONTENTS1 + i); + + dw_hdmi_qp_mod(hdmi, PKTSCHED_SPDI_TX_EN, PKTSCHED_SPDI_TX_EN, + PKTSCHED_PKT_EN); + + return 0; +} + static int dw_hdmi_qp_bridge_write_audio_infoframe(struct drm_bridge *brid= ge, const u8 *buffer, size_t len) { @@ -1252,6 +1283,8 @@ static const struct drm_bridge_funcs dw_hdmi_qp_bridg= e_funcs =3D { .hdmi_write_hdmi_infoframe =3D dw_hdmi_qp_bridge_write_hdmi_infoframe, .hdmi_clear_hdr_drm_infoframe =3D dw_hdmi_qp_bridge_clear_hdr_drm_infofra= me, .hdmi_write_hdr_drm_infoframe =3D dw_hdmi_qp_bridge_write_hdr_drm_infofra= me, + .hdmi_clear_spd_infoframe =3D dw_hdmi_qp_bridge_clear_spd_infoframe, + .hdmi_write_spd_infoframe =3D dw_hdmi_qp_bridge_write_spd_infoframe, .hdmi_clear_audio_infoframe =3D dw_hdmi_qp_bridge_clear_audio_infoframe, .hdmi_write_audio_infoframe =3D dw_hdmi_qp_bridge_write_audio_infoframe, .hdmi_audio_startup =3D dw_hdmi_qp_audio_enable, @@ -1368,7 +1401,8 @@ struct dw_hdmi_qp *dw_hdmi_qp_bind(struct platform_de= vice *pdev, DRM_BRIDGE_OP_EDID | DRM_BRIDGE_OP_HDMI | DRM_BRIDGE_OP_HDMI_AUDIO | - DRM_BRIDGE_OP_HDMI_HDR_DRM_INFOFRAME; + DRM_BRIDGE_OP_HDMI_HDR_DRM_INFOFRAME | + DRM_BRIDGE_OP_HDMI_SPD_INFOFRAME; if (!hdmi->no_hpd) hdmi->bridge.ops |=3D DRM_BRIDGE_OP_HPD; hdmi->bridge.of_node =3D pdev->dev.of_node; diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.h b/drivers/gpu/drm= /bridge/synopsys/dw-hdmi-qp.h index 53688eae8dba..c07847e8d7dd 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.h +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.h @@ -206,6 +206,7 @@ #define PKTSCHED_PKT_EN 0xaa8 #define PKTSCHED_DRMI_TX_EN BIT(17) #define PKTSCHED_AUDI_TX_EN BIT(15) +#define PKTSCHED_SPDI_TX_EN BIT(14) #define PKTSCHED_AVI_TX_EN BIT(13) #define PKTSCHED_VSI_TX_EN BIT(12) #define PKTSCHED_EMP_CVTEM_TX_EN BIT(10) --=20 2.52.0